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| author | Jakub Hrozek <jhrozek@redhat.com> | 2010-01-28 20:04:19 +0100 |
|---|---|---|
| committer | Jakub Hrozek <jhrozek@redhat.com> | 2010-01-28 20:04:19 +0100 |
| commit | 03ff51230ea260b3aab05fe07c0c7f66c94b176c (patch) | |
| tree | 504b6929a32c518712b9da03f3e02d0a7536957e | |
| download | c-ares-03ff51230ea260b3aab05fe07c0c7f66c94b176c.tar.gz c-ares-03ff51230ea260b3aab05fe07c0c7f66c94b176c.tar.xz c-ares-03ff51230ea260b3aab05fe07c0c7f66c94b176c.zip | |
Initial import
206 files changed, 29596 insertions, 0 deletions
@@ -0,0 +1,37 @@ +c-ares is based on ares, and these are the people that have worked on it since +the fork was made: + +Alexander Lazic +Alexey Simak +Andreas Rieke +Ashish Sharma +Brad House +Brad Spencer +Bram Matthys +Dan Fandrich +Daniel Stenberg +Dirk Manske +Dominick Meglio +Doug Goldstein +Duncan Wilcox +Eino Tuominen +Erik Kline +George Neill +Gisle Vanem +Guilherme Balena Versiani +Gunter Knauf +Henrik Stoerner +James Bursa +Michael Wallner +Nick Mathewson +Phil Blundell +Ravi Pratap +Robin Cornelius +Sebastian at basti79.de +Shmulik Regev +Steinar H. Gunderson +Tofu Linden +Vlad Dinulescu +William Ahern +Yang Tse +liren at vivisimo.com @@ -0,0 +1,1122 @@ + Changelog for the c-ares project + +* December 29, 2009 (Yang Tse) +- Laszlo Tamas Szabo adjusted Makefile.msvc compiler options so that where + run-time error checks enabling compiler option /GZ was used it is replaced + with equivalent /RTCsu for Visual Studio 2003 and newer versions. Option + /GX is replaced with equivalent /EHsc for all versions. Also fixed socket + data type for internal configure_socket function. + +* December 21, 2009 (Yang Tse) +- Ingmar Runge noticed that Windows config-win32.h configuration file + did not include a definition for HAVE_CLOSESOCKET which resulted in + function close() being inappropriately used to close sockets. + +Version 1.7.0 (Nov 30, 2009) + +* November 26, 2009 (Yang Tse) +- Larry Lansing fixed ares_parse_srv_reply to properly parse replies + which might contain non-SRV answers, skipping over potential non-SRV + ones such as CNAMEs. + +* November 23, 2009 (Yang Tse) +- Changed naming convention for c-ares libraries built with MSVC, details + and build instructions provided in README.msvc file. + +* November 22, 2009 (Yang Tse) +- Jakub Hrozek fixed more function prototypes in man pages to sync them + with the ones declared in ares.h + +- Jakub Hrozek renamed addrttl and addr6ttl structs to ares_addrttl and + ares_addr6ttl in order to prevent name space pollution, along with + necessary changes to code base and man pages.This change does not break + ABI, there is no need to recompile existing applications. But existing + applications using these structs with the old name will need source code + adjustments when recompiled using c-ares 1.7.0. + +* November 21, 2009 (Yang Tse) +- Added manifest stuff to Makefile.msvc. + +* November 20, 2009 (Yang Tse) +- Fixed several function prototypes in man pages that were out of sync + with the ones declared in ares.h. Added ares_free_data() along with + man page. Updated ares_parse_srv_reply() and ares_parse_txt_reply() + with changes from Jakub Hrozek making these now return linked lists + instead of arrays, and merging the ares_free_data() adjustments. + +* November 10, 2009 (Yang Tse) +- Updated MSVC 6.0 project files to match settings from Makefile.msvc. + +* November 9, 2009 (Yang Tse) +- Makefile.msvc is now the reference method to build c-ares and sample + programs with any MSVC compiler or MS Visual Studio version. If no + option or target are specified it builds dynamic and static c-ares + libraries in debug and release flavours and also builds all sample + programs using each of the different c-ares libraries. + +* November 2, 2009 (Yang Tse) +- Renamed c-ares setup.h to ares_setup.h + +* October 31, 2009 (Yang Tse) +- Symbol hiding configure options are named now --enable-symbol-hiding + and --disable-symbol-hiding in an attempt to make them less ambiguous. + +* October 30, 2009 (Yang Tse) +- Many fixes for ares_parse_txt_reply() + +* October 29, 2009 (Daniel Stenberg) +- Jakub Hrozek added ares_parse_txt_reply() for TXT parsing + +* October 29, 2009 (Yang Tse) +- Updated MSVC 6.0 workspace and project files that allows building + dynamic and static c-ares libraries in debug and release flavours. + Additionally each of the three sample programs is built against + each of the four possible c-ares libraries, generating all this + a total number of 12 executables and 4 libraries. + +* October 28, 2009 (Yang Tse) +- Initial step towards the ability to reduce c-ares exported symbols + when built as a shared library based on the 'visibility' attribute + for GNUC and Intel compilers and based on __global for Sun compilers, + taking also in account __declspec function decoration for Win32 and + Symbian DLL's. + +* October 27, 2009 (Yang Tse) +- Fixed Pelles C Win32 target compilation issues. + +* October 23, 2009 (Yang Tse) +- John Engelhart noticed an unreleased problem relative to a duplicate + ARES_ECANCELLED error code value and missing error code description. + +* October 7, 2009 (Yang Tse) +- Overhauled ares__get_hostent() Fixing out of bounds memory overwrite + triggered with malformed /etc/hosts file. Improving parsing of /etc/hosts + file. Validating requested address family. Ensuring that failures always + return a NULL pointer. Adjusting header inclusions. + +* October 6, 2009 (Yang Tse) +- Fix ssize_t redefinition errors on WIN64 reported by Alexey Simak. + +* September 29, 2009 (Yang Tse) +- Make configure script also check if _REENTRANT definition is required to + make errno available as a preprocessor macro. + +* September 7, 2009 (Yang Tse) +- Add T_SRV portability check to ares_parse_srv_reply.c + +* 4 Sep 2009 (Daniel Stenberg) +- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing + +* 3 Aug 2009 (Daniel Stenberg) +- Joshua Kwan fixed the init routine to fill in the defaults for stuff that + fails to get inited by other means. This fixes a case of when the c-ares + init fails when internet access is fone. + +- Timo Teras changed the reason code used in the resolve callback done when + ares_cancel() is used, to be ARES_ECANCELLED instead of ARES_ETIMEOUT to + better allow the callback to know what's happening. + +* 14 Jul 2009 (Guenter Knauf) +- renamed generated config.h to ares_config.h to avoid any future clashes + with config.h from other projects. + +* June 20 2009 (Yang Tse) +- Refactor how libraries are checked for connect() function in configure + script and check for connect() as it is done for other functions. + +* June 19 2009 (Yang Tse) +- Make sclose() function-like macro definition used to close a socket, + now solely based on HAVE_CLOSESOCKET and HAVE_CLOSESOCKET_CAMEL + config file preprocessor definitions + +* June 18 2009 (Yang Tse) +- Add CloseSocket camel case function check for configure script. + +* June 17 2009 (Yang Tse) +- Check for socket() and closesocket() as it is done for other functions + in configure script. + +* June 11 2009 (Yang Tse) +- Modified buildconf so that when automake runs it copies missing files + instead of symlinking them. + +* June 8 2009 (Yang Tse) +- Removed buildconf.bat from release and daily snapshot archives. This + file is only for CVS tree checkout builds. + +* May 26 2009 (Yang Tse) +- Added --enable-curldebug configure option to enable and disable building + with the low-level curl debug memory tracking 'feature' to allow decoupled + setting from --enable-debug, allowing again to build c-ares independently + out of the CVS tree. + + For the c-ares library option --enable-debug enables debug build features + which are _not_ related with memory tracking. For the c-ares library when + --enable-debug is given it does not enable the memory tracking feature. If + you wish to enable the curl debug memory tracking you must use configure + option --enable-curldebug explicitily to do so. + + Internally, definition of preprocessor symbol DEBUGBUILD restricts code + which is only compiled for debug enabled builds. And symbol CURLDEBUG is + used to differentiate code which is _only_ used for memory tracking. + + Make ares_init(), ares_dup() and ares_init_options() fail returning + ARES_ENOTINITIALIZED if library initialization has not been performed + calling ares_library_init(). + +* May 20 2009 (Yang Tse) +- Added ares_library_init() and ares_library_cleanup() man pages. + +* May 19 2009 (Yang Tse) +- Introduced ares_library_init() and ares_library_cleanup() functions. + + This is an API and ABI break for Win32/64 systems. Non-Win32/64 build targets + using c-ares 1.7.0 can still survive without calling these functions. Read all + the details on ares_library_init(3) and ares_library_cleanup(3) man pages that + are included. + + curl/libcurl 7.19.5 is fully compatible with c-ares 1.7.0 on all systems. + + In order to use c-ares 1.7.0 with curl/libcurl on Win32/64 systems it is + required that curl/libcurl is 7.19.5 or newer. In other words, it is not + possible on Win32/64 to use c-ares 1.7.0 with a curl/libcurl version less + than 7.19.5 + +* May 11 2009 (Daniel Stenberg) +- Gregor Jasny made c-ares link with libtool 's -export-symbols-regex option to + only expose functions starting with ares_. + +* May 7 2009 (Yang Tse) +- Fix an m4 overquoting triggering a spurious 'AS_TR_CPP' symbol definition + attempt in generated config.h + +* May 2 2009 (Yang Tse) +- Use a build-time configured ares_socklen_t data type instead of socklen_t. + +* April 21 2009 (Yang Tse) +- Moved potential inclusion of system's malloc.h and memory.h header files to + setup_once.h. Inclusion of each header file is based on the definition of + NEED_MALLOC_H and NEED_MEMORY_H respectively. + +* March 11 2009 (Yang Tse) +- Japheth Cleaver fixed acountry.c replacing u_long with unsigned long. + +* February 20 2009 (Yang Tse) +- Do not halt compilation when using VS2008 to build a Windows 2000 target. + +* February 3 2009 (Phil Blundell) +- If the server returns garbage or nothing at all in response to an AAAA query, + go on and ask for A records anyway. + +* January 31 2009 (Daniel Stenberg) +- ares_gethostbyname() now accepts 'AF_UNSPEC' as a family for resolving + either AF_INET6 or AF_INET. It works by accepting any of the looksups in the + hosts file, and it resolves the AAAA field with a fallback to A. + +* January 14 2009 (Daniel Stenberg) +- ares.h no longer uses the HAVE_STRUCT_IN6_ADDR define check, but instead it + now declares the private struct ares_in6_addr for all systems instead of + relying on one possibly not present in the system. + +* January 13 2009 (Phil Blundell) +- ares__send_query() now varies the retry timeout pseudo-randomly to avoid + packet storms when several queries were started at the same time. + +* January 11 2009 (Daniel Stenberg) +- Phil Blundell added the internal function ares__expand_name_for_response() + that is now used by the ares_parse_*_reply() functions instead of the + ares_expand_name() simply to easier return ARES_EBADRESP for the cases where + the name expansion fails as in responses that really isn't expected. + +Version 1.6.0 (Dec 9, 2008) + +* December 9 2008 (Gisle Vanem) + + Fixes for Win32 targets using the Watt-32 tcp/ip stack. + +* Dec 4 2008 (Daniel Stenberg) + + Gregor Jasny provided the patch that introduces ares_set_socket_callback(), + and I edited it to also get duped by ares_dup(). + +* Dec 3 2008 (Daniel Stenberg) + + API changes: + + I made sure the public ares_config struct looks like before and yet it + supports the ROTATE option thanks to c-ares now storing the "optmask" + internally. Thus we should be ABI compatible with the past release(s) + now. My efforts mentioned below should not break backwards ABI compliance. + + Here's how I suggest we proceed with the API: + + ares_init() will be primary "channel creator" function. + + ares_init_options() will continue to work exactly like now and before. For + starters, it will be the (only) way to set the existing options. + + ares_save_options() will continue to work like today, but will ONLY save + options that you can set today (including ARES_OPT_ROTATE actually) but new + options that we add may not be saved with this. + + Instead we introduce: + + ares_dup() that instead can make a new channel and clone the config used + from an existing channel. It will then clone all config options, including + future new things we add. + + ares_set_*() style functions that set (new) config options. As a start we + simply add these for new functionality, but over time we can also introduce + them for existing "struct ares_options" so that we can eventually deprecate + the two ares_*_options() functions. + + ares_get_*() style functions for extracting info from a channel handle that + should be used instead of ares_save_options(). + +* Nov 26 2008 (Yang Tse) +- Brad Spencer provided changes to allow buildconf to work on OS X. + +- Gerald Combs fixed a bug in ares_parse_ptr_reply() which would cause a + buffer to shrink instead of expand if a reply contained 8 or more records. + +* Nov 25 2008 (Yang Tse) +- In preparation for the upcomming IPv6 nameservers patch, the internal + ares_addr union is now changed into an internal struct which also holds + the address family. + +* Nov 19 2008 (Daniel Stenberg) +- Brad Spencer brought the new function ares_gethostbyname_file() which simply + resolves a host name from the given file, using the regular hosts syntax. + +* Nov 1 2008 (Daniel Stenberg) +- Carlo Contavalli added support for the glibc "rotate" option, as documented + in man resolv.conf: + + causes round robin selection of nameservers from among those listed. This + has the effect of spreading the query load among all listed servers, rather + than having all clients try the first listed server first every time. + + You can enable it with ARES_OPT_ROTATE + +* Oct 21 2008 (Yang Tse) + Charles Hardin added handling of EINPROGRESS for UDP connects. + +* Oct 18 2008 (Daniel Stenberg) + Charles Hardin made adig support a regular numerical dotted IP address for the + -s option as well. + +* Oct 7 2008 (Yang Tse) +- Added --enable-optimize configure option to enable and disable compiler + optimizations to allow decoupled setting from --enable-debug. + +* Oct 2 2008 (Yang Tse) +- Added --enable-warnings configure option to enable and disable strict + compiler warnings to allow decoupled setting from --enable-debug. + +* Sep 17 2008 (Yang Tse) +- Code reorganization to allow internal/private use of "nameser.h" to any + system that lacks arpa/nameser.h or arpa/nameser_compat.h header files. + +* Sep 16 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_writev to any + system that lacks the writev function. + +* Sep 15 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_strcasecmp to any + system that lacks the strcasecmp function. + +- Improve configure detection of some string functions. + +* Sep 11 2008 (Yang Tse) +- Code reorganization to allow internal/private use of ares_strdup to any + system that lacks the strdup function. + +Version 1.5.3 (Aug 29, 2008) + +* Aug 25 2008 (Yang Tse) +- Improvement by Brad House: + + This patch addresses an issue in which a response could be sent back to the + source port of a client from a different address than the request was made to. + This is one form of a DNS cache poisoning attack. + + The patch simply uses recvfrom() rather than recv() and validates that the + address returned from recvfrom() matches the address of the server we have + connected to. Only necessary on UDP sockets as they are connection-less, TCP + is unaffected. + +- Fix by George Neill: + Fixed compilation of acountry sample application failure on some systems. + +* Aug 4 2008 (Daniel Stenberg) +- Fix by Tofu Linden: + + The symptom: + * Users (usually, but not always) on 2-Wire routers and the Comcast service + and a wired connection to their router would find that the second and + subsequent DNS lookups from fresh processes using c-ares to resolve the same + address would cause the process to never see a reply (it keeps polling for + around 1m15s before giving up). + + The repro: + * On such a machine (and yeah, it took us a lot of QA to find the systems + that reproduce such a specific problem!), do 'ahost www.secondlife.com', + then do it again. The first process's lookup will work, subsequent lookups + will time-out and fail. + + The cause: + * init_id_key() was calling randomize_key() *before* it initialized + key->state, meaning that the randomness generated by randomize_key() is + immediately overwritten with deterministic values. (/dev/urandom was also + being read incorrectly in the c-ares version we were using, but this was + fixed in a later version.) + * This makes the stream of generated query-IDs from any new c-ares process + be an identical and predictable sequence of IDs. + * This makes the 2-Wire's default built-in DNS server detect these queries + as probable-duplicates and (erroneously) not respond at all. + + +* Aug 4 2008 (Yang Tse) +- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use. + Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62 + version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols + no matter if the system is AIX or not. To keep the traditional behaviour, + and an uniform one across autoconf versions AC_AIX is replaced with our + own internal macro CARES_CHECK_AIX_ALL_SOURCE. + +* Aug 1 2008 (Yang Tse) +- Configure process now checks if the preprocessor _REENTRANT symbol is already + defined. If it isn't currently defined a set of checks are performed to test + if its definition is required to make visible to the compiler a set of *_r + functions. Finally, if _REENTRANT is already defined or needed it takes care + of making adjustments necessary to ensure that it is defined equally for the + configure process tests and generated config file. + +* Jul 20 2008 (Yang Tse) +- When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will + now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID, + RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID. + +* Jul 17 2008 (Yang Tse) +- RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined + to the data type pointed by its respective argument and not the pointer type. + +* Jul 16 2008 (Yang Tse) +- Improved configure detection of number of arguments for getservbyport_r. + Detection is now based on compilation checks instead of linker ones. + +- Configure process now checks availability of recvfrom() socket function and + finds out its return type and the types of its arguments. Added definitions + for non-configure systems config files, and introduced macro sreadfrom which + will be used on udp sockets as a recvfrom() wrapper in the future. + +* Jul 15 2008 (Yang Tse) +- Introduce definition of _REENTRANT symbol in setup.h to improve library + usability. Previously the configure process only used the AC_SYS_LARGEFILE + macro for debug builds, now it is also used for non-debug ones enabling the + use of configure options --enable-largefile and --disable-largefile which + might be needed for library compatibility. Remove checking the size of + curl_off_t, it is no longer needed. + +* Jul 3 2008 (Daniel Stenberg) +- Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and + the target host has only A records, it automatically falls back to an + AF_INET lookup and gives you the A results. However, if the target host has + a CNAME record, this behaviour is defeated since the original query does + return some data even though ares_parse_aaa_reply() doesn't consider it + relevant. Here's a small patch to make it behave the same with and without + the CNAME. + +* Jul 2 2008 (Yang Tse) +- Fallback to gettimeofday when monotonic clock is unavailable at run-time. + +* Jun 30 2008 (Daniel Stenberg) + +- As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is + not posix or anything and thus c-ares failed to build on hurd (and possibly + elsewhere). The define was also somewhat artificially used in the windows + port. Now, I instead rewrote the use of gethostbyname to enlarge the host + name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN + define. I thus also removed the defien from the namser.h file where it was + once added for the windows build. + + I also fixed init_by_defaults() function to not leak memory in case if + error. + +* Jun 9 2008 (Yang Tse) + +- Make libcares.pc generated file for pkg-config include information relative + to the libraries needed for the static linking of c-ares. + +* May 30 2008 (Yang Tse) + +- Brad House fixed a missing header file inclusion in adig sample program. + +Version 1.5.2 (May 29, 2008) + +* May 13 2008 (Daniel Stenberg) + +- Introducing millisecond resolution support for the timeout option. See + ares_init_options()'s ARES_OPT_TIMEOUTMS. + +* May 9 2008 (Yang Tse) + +- Use monotonic time source if available, for private function ares__tvnow() + +* May 7 2008 (Daniel Stenberg) + +- Sebastian made c-ares able to return all PTR-records when doing reverse + lookups. It is not common practice to have multiple PTR-Records for a single + IP, but its perfectly legal and some sites have those. + +- Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to + autoconf 2.57 usage (which is the version you have specified as the minimum + version). It's a minor change but it does clean up some warnings with newer + autoconf (specifically 2.62). + +* May 5 2008 (Yang Tse) + +- Improved parsing of resolver configuration files. + +* April 4 2008 (Daniel Stenberg) + +- Eino Tuominen improved the code when a file is used to seed the randomizer. + +- Alexey Simak made adig support NAPTR records + +- Alexey Simak fixed the VC dsp file by adding the missing source file + ares_expand_string.c + +* December 11 2007 (Gisle Vanem) + +- Added another sample application; acountry.c which converts an + IPv4-address(es) and/or host-name(s) to country-name and country-code. + This uses the service of the DNSBL at countries.nerd.dk. + +* December 3 2007 (Daniel Stenberg) + +- Brad Spencer fixed the configure script to assume that there's no + /dev/urandom when built cross-compiled as then the script cannot check for + it. + +- Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat + +Version 1.5.1 (Nov 21, 2007) + +* November 21 2007 (Daniel Stenberg) + +- Robin Cornelius pointed out that ares_llist.h was missing in the release + archive for 1.5.0 + +Version 1.5.0 (Nov 21, 2007) + +* October 2 2007 (Daniel Stenberg) + +- ares_strerror() segfaulted if the input error number was out of the currently + supported range. + +- Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in + internal function init_id_key() under low memory conditions. + +* September 28 2007 (Daniel Stenberg) + +- Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI + and API changes in the progress callback (and possibly more coming up from + Steinar) + +* September 28 2007 (Steinar H. Gunderson) + +- Don't skip a server if it's the only one. (Bugfix from the Google tree.) + +- Made the query callbacks receive the number of timeouts that happened during + the execution of a query, and updated documentation accordingly. (Patch from + the Google tree.) + +- Support a few more socket options: ARES_OPT_SOCK_SNDBUF and + ARES_OPT_SOCK_RCVBUF + +- Always register for TCP events even if there are no outstanding queries, as + the other side could always close the connection, which is a valid event + which should be responded to. + +* September 22 2007 (Daniel Stenberg) + +- Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in + several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that + if it fails and the socket is closed the following code doesn't try to use + the file descriptor. + +- Steinar H. Gunderson modified c-ares to now also do to DNS retries even when + TCP is used since there are several edge cases where it still makes sense. + +- Brad House provided a fix for ares_save_options(): + + Apparently I overlooked something with the ares_save_options() where it + would try to do a malloc(0) when no options of that type needed to be saved. + On most platforms, this was fine because malloc(0) doesn't actually return + NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM. + +* July 14 2007 (Daniel Stenberg) + +- Vlad Dinulescu fixed two outstanding valgrind reports: + + 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short + int variable) with qid, which is declared as an int variable. Moreover, + DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID + sets only the first two bytes of qid. I think that qid should be declared as + "unsigned short" in this function. + + 2. The same problem occurs in ares_process.c, process_answer() . query->qid + (an unsigned short integer variable) is compared with id, which is an + integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets + only the first two bytes of id. I think that the id variable should be + declared as "unsigned short" in this function. + + Even after declaring these variables as "unsigned short", the valgrind + errors are still there. Which brings us to the third problem. + + 3. The third problem is that Valgrind assumes that query->qid is not + initialised correctly. And it does that because query->qid is set from + DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And + qbuf has uninitialised bytes because of channel->next_id . And next_id is + set by ares_init.c:ares__generate_new_id() . I found that putting short r=0 + in this function (instead of short r) makes all Valgrind warnings go away. + I have studied ares__rc4() too, and this is the offending line: + + buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62) + + This is what triggers Valgrind.. buffer_ptr is unitialised in this function, + and by applying ^= on it, it remains unitialised. + +Version 1.4.0 (June 8, 2007) + +* June 4 2007 (Daniel Stenberg) + +- James Bursa reported a major memory problem when resolving multi-IP names + and I found and fixed the problem. It was added by Ashish Sharma's patch + two days ago. + + When I then tried to verify multiple entries in /etc/hosts after my fix, I + got another segfault and decided this code was not ripe for inclusion and I + reverted the patch. + +* June 2 2007 + +- Brad Spencer found and fixed three flaws in the code, found with the new + gcc 4.2.0 warning: -Waddress + +- Brad House fixed VS2005 compiler warnings due to time_t being 64bit. + He also made recent Microsoft compilers use _strdup() instead of strdup(). + +- Brad House's man pages for ares_save_options() and ares_destroy_options() + were added. + +- Ashish Sharma provided a patch for supporting multiple entries in the + /etc/hosts file. Patch edited for coding style and functionality by me + (Daniel). + +* May 30 2007 + +- Shmulik Regev brought cryptographically secure transaction IDs: + + The c-ares library implementation uses a DNS "Transaction ID" field that is + seeded with a pseudo random number (based on gettimeofday) which is + incremented (++) between consecutive calls and is therefore rather + predictable. In general, predictability of DNS Transaction ID is a well + known security problem (e.g. + http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based + implementation vulnerable to DNS poisoning. Credit goes to Amit Klein + (Trusteer) for identifying this problem. + + The patch I wrote changes the implementation to use a more secure way of + generating unique IDs. It starts by obtaining a key with reasonable entropy + which is used with an RC4 stream to generate the cryptographically secure + transaction IDs. + + Note that the key generation code (in ares_init:randomize_key) has two + versions, the Windows specific one uses a cryptographically safe function + provided (but undocumented :) by the operating system (described at + http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The + default implementation is a bit naive and uses the standard 'rand' + function. Surely a better way to generate random keys exists for other + platforms. + + The patch can be tested by using the adig utility and using the '-s' option. + +- Brad House added ares_save_options() and ares_destroy_options() that can be + used to keep options for later re-usal when ares_init_options() is used. + + Problem: Calling ares_init() for each lookup can be unnecessarily resource + intensive. On windows, it must LoadLibrary() or search the registry + on each call to ares_init(). On unix, it must read and parse + multiple files to obtain the necessary configuration information. In + a single-threaded environment, it would make sense to only + ares_init() once, but in a heavily multi-threaded environment, it is + undesirable to ares_init() and ares_destroy() for each thread created + and track that. + + Solution: Create ares_save_options() and ares_destroy_options() functions to + retrieve and free options obtained from an initialized channel. The + options populated can be used to pass back into ares_init_options(), + it should populate all needed fields and not retrieve any information + from the system. Probably wise to destroy the cache every minute or + so to prevent the data from becoming stale. + +- Daniel S added ares_process_fd() to allow applications to ask for processing + on specific sockets and thus avoiding select() and associated + functions/macros. This function will be used by upcoming libcurl releases + for this very reason. It also made me export the ares_socket_t type in the + public ares.h header file, since ares_process_fd() uses that type for two of + the arguments. + +* May 25 2007 + +- Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows + that could cause it to return a bad return code. + +* April 16 2007 + +- Yang Tse: Provide ares_getopt() command-line parser function as a source + code helper function, not belonging to the actual c-ares library. + +* February 19 2007 + +- Vlad Dinulescu added ares_parse_ns_reply(). + +* February 13 2007 + +- Yang Tse: Fix failure to get the search sequence of /etc/hosts and + DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when + /etc/resolv.conf did not exist or was unable to read it. + +* November 22 2006 + +- Install ares_dns.h too + +- Michael Wallner fixed this problem: When I set domains in the options + struct, and there are domain/search entries in /etc/resolv.conf, the domains + of the options struct will be overridden. + +* November 6 2006 + +- Yang Tse removed a couple of potential zero size memory allocations. + +- Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel) + broke in the 1.3.2 release. We should switch to a system where that file is + auto-generated. We could rip some code for that from curl... + +Version 1.3.2 (November 3, 2006) + +* October 12 2006 + +- Prevent ares_getsock() to overflow if more than 16 sockets are used. + +* September 11 2006 + +- Guilherme Balena Versiani: I noted a strange BUG in Win32 port + (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network + by hand or disconnect the network cable in Windows 2000 or Windows XP, my + application gets 127.0.0.1 as the only name server. The problem comes from + 'GetNetworkParams' function, that returns the empty string "" as the only + name server in that case. Moreover, the Windows implementation of + inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE. + +* August 29 2006 + +- Brad Spencer did + + o made ares_version.h use extern "C" for c++ compilers + o fixed compiler warnings in ares_getnameinfo.c + o fixed a buffer position init for TCP reads + +* August 3 2006 + +- Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and + not always zero! + +Version 1.3.1 (June 24, 2006) + +* July 23, 2006 + +- Gisle Vanem added getopt() to the ahost program. Currently accepts + only [-t {a|aaaa}] to specify address family in ares_gethostbyname(). + +* June 19, 2006 + +- (wahern) Removed "big endian" DNS section and RR data integer parser + macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise + operations in C operate on logical values. And in any event the octets are + already in big-endian (aka network) byte order so they're being reversed + (thus the source of the breakage). + +* June 18, 2006 + +- William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls + from area_process.c. + + TODO: Handle one last EAGAIN for a UDP socket send(2) in + ares__send_query(). + +* May 10, 2006 + +- Bram Matthys brought my attention to a libtool peculiarity where detecting + things such as C++ compiler actually is a bad thing and since we don't need + that detection I added a work-around, much inspired by a previous patch by + Paolo Bonzini. This also shortens the configure script quite a lot. + +* May 3, 2006 + +- Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes + c-ares call a callback on socket state changes. A better way than the + ares_getsock() to get full control over the socket state. + +* January 9, 2006 + +- Alexander Lazic improved the getservbyport_r() configure check. + +* January 6, 2006 + +- Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS + variable for easier controlling what it does and how it runs. + +* January 5, 2006 + +- James Bursa fixed c-ares to find the hosts file on RISC OS, and made it + build with newer gcc versions that no longer defines "riscos". + +* December 22 + +- Daniel Stenberg added ares_getsock() that extracts the set of sockets to + wait for action on. Similar to ares_fds() but not restricted to using + select() for the waiting. + +* November 25 + +- Yang Tse fixed some send() / recv() compiler warnings + +* September 18 + +- Added constants that will be used by ares_getaddrinfo + +- Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it + is available to ensure it works properly in a threaded environment. + +* September 10 + +- configure fix for detecting a member in the sockaddr_in6 struct which failed + on ipv6-enabled HP-UX 11.00 + +Version 1.3.0 (August 29, 2005) + +* August 21 + +- Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info() + when getting the DNS server etc. + +* June 19 + +- Added some checks for the addrinfo structure. + +* June 2 + +- William Ahern: + + Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a + read event can come back from poll() on a valid SOCK_DGRAM socket but + recv(2) will still block. This patch doesn't ignore EAGAIN in + read_udp_packets(), though maybe it should. (This patch was edited by Daniel + Stenberg and a new configure test was added (imported from curl's configure) + to properly detect what non-blocking socket approach to use.) + + I'm not quite sure how this was happening, but I've been seeing PTR queries + which seem to return empty responses. At least, they were empty when calling + ares_expand_name() on the record. Here's a patch which guarantees to + NUL-terminate the expanded name. The old behavior failed to NUL-terminate if + len was 0, and this was causing strlen() to run past the end of the buffer + after calling ares_expand_name() and getting ARES_SUCCESS as the return + value. If q is not greater than *s then it's equal and *s is always + allocated with at least one byte. + +* May 16 + +- Added ares_getnameinfo which mimics the getnameinfo API (another feature + that could use testing). + +* May 14 + +- Added an inet_ntop function from BIND for systems that do not have it. + +* April 9 + +- Made sortlist support IPv6 (this can probably use some testing). + +- Made sortlist support CIDR matching for IPv4. + +* April 8 + +- Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist + does not work with IPv6. Also provided an implementation of bitncmp from + BIND for systems that do not supply this function. This will be used to add + IPv6 support to sortlist. + +- Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family. + The function can lookup IPv6 addresses both from files (/etc/hosts) and + DNS lookups. + +* April 7 + +- Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac + OS X. + +* April 5 + +- Dominick Meglio: Provided implementations of inet_net_pton and inet_pton + from BIND for systems that do not include these functions. + +* March 11, 2005 + +- Dominick Meglio added ares_parse_aaaa_reply.c and did various + adjustments. The first little steps towards IPv6 support! + +* November 7 + +- Fixed the VC project and makefile to use ares_cancel and ares_version + +* October 24 + +- The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw. + This is now fixed. + +Version 1.2.1 (October 20, 2004) + +* September 29 + +- Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital + when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for + other OSes. He made c-ares check for and understand it if present. + +- Now c-ares will use local host name lookup _before_ DNS resolving by default + if nothing else is told. + +* September 26 + +- Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf + file to determine the sequence in which to search /etc/hosts and DNS. So on + systems where this order is defined by /etc/host.conf instead of a "lookup" + entry in /etc/resolv.conf, c-ares will always default to looking in DNS + first, and /etc/hosts second. + + c-ares now looks at + + 1) resolv.conf (for the "lookup" line); + 2) nsswitch.fon (for the "hosts:" line); + 3) host.conf (for the "order" line). + + First match wins. + +- Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is + located in a static location. It assumed + C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact, + the location of the HOSTS file can be changed via a registry setting. + + There is a key called DatabasePath which specifies the path to the HOSTS + file: + http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx + + The patch will make c-ares correctly consult the registry for the location + of this file. + +* August 29 + +- Gisle Vanem fixed the MSVC build files. + +* August 20 + +- Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack. + +* August 13 + +- Harshal Pradhan made a minor syntax change in ares_init.c to make it build + fine with MSVC 7.1 + +* July 24 + +- Made the lib get built static only if --enable-debug is used. + +- Gisle Vanem fixed: + + Basically in loops like handle_errors(), 'query->next' was assigned a local + variable and then query was referenced after the memory was freed by + next_server(). I've changed that so next_server() and end_query() returns + the next query. So callers should use this ret-value. + + The next problem was that 'server->tcp_buffer_pos' had a random value at + entry to 1st recv() (luckily causing Winsock to return ENOBUFS). + + I've also added a ares_writev() for Windows to streamline the code a bit + more. + +* July 20 +- Fixed a few variable return types for some system calls. Made configure + check for ssize_t to make it possible to use that when receiving the send() + error code. This is necessary to prevent compiler warnings on some systems. + +- Made configure create config.h, and all source files now include setup.h that + might include the proper config.h (or a handicrafted alternative). + +- Switched to 'ares_socket_t' type for sockets in ares, since Windows don't + use 'int' for that. + +- automake-ified and libool-ified c-ares. Now it builds libcares as a shared + lib on most platforms if wanted. (This bloated the size of the release + archive with another 200K!) + +- Makefile.am now uses Makefile.inc for the c sources, h headers and man + pages, to make it easier for other makefiles to use the exact same set of + files. + +- Adjusted 'maketgz' to use the new automake magic when building distribution + archives. + +- Anyone desires HTML and/or PDF versions of the man pages in the release + archives? + +* July 3 +- Günter Knauf made c-ares build and run on Novell Netware. + +* July 1 +- Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp + fixes and made ares not use 'errno' to provide further info on Windows. + +* June 30 +- Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack. + +* June 10 +- Gisle Vanem's init patch for Windows: + + The init_by_resolv_conf() function fetches the DNS-server(s) + from a series of registry branches. + + This can be wrong in the case where DHCP has assigned nameservers, but the + user has overridden these servers with other prefered settings. Then it's + wrong to use the DHCPNAMESERVER setting in registry. + + In the case of no global DHCP-assigned or fixed servers, but DNS server(s) + per adapter, one has to query the adapter branches. But how can c-ares know + which adapter is valid for use? AFAICS it can't. There could be one adapter + that is down (e.g. a VPN adapter). + + So it's better to leave this to the IP Helper API (iphlapi) available in + Win-98/2000 and later. My patch falls-back to the old way if not available. + +* June 8 +- James Bursa fixed an init issue for RISC OS. + +* May 11 +- Nico Stappenbelt reported that when processing domain and search lines in + the resolv.conf file, the first entry encountered is processed and used as + the search list. According to the manual pages for both Linux, Solaris and + Tru64, the last entry of either a domain or a search field is used. + + This is now adjusted in the code + +Version 1.2.0 (April 13, 2004) + +* April 2, 2004 +- Updated various man pages to look nicer when converted to HTML on the web + site. + +* April 1, 2004 +- Dirk Manske provided a new function that is now named ares_cancel(). It is + used to cancel/cleanup a resolve/request made using ares functions on the + given ares channel. It does not destroy/kill the ares channel itself. + +- Dominick Meglio cleaned up the formatting in several man pages. + +* March 30, 2004 +- Dominick Meglio's new ares_expand_string. A helper function when decoding + incoming DNS packages. + +- Daniel Stenberg modified the Makefile.in to use a for loop for the man page + installation to improve overview and make it easier to add man pages. + +Version 1.1.0 (March 11, 2004) + +* March 9, 2004 +- Gisle Vanem improved build on Windows. + +* February 25, 2004 +- Dan Fandrich found a flaw in the Feb 22 fix. + +- Added better configure --enable-debug logic (taken from the curl configure + script). Added acinclude.m4 to the tarball. + +* February 23, 2004 +- Removed ares_free_errmem(), the function, the file and the man page. It was + not used and it did nothing. + +- Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of + compiler warnings on picky compilers. + +* February 22, 2004 +- Dominick Meglio made ares init support multiple name servers in the + NameServer key on Windows. + +* February 16, 2004 +- Modified ares_private.h to include libcurl's memory debug header if + CURLDEBUG is set. This makes all the ares-functions supervised properly by + the curl test suite. This also forced me to add inclusion of the + ares_private.h header in a few more files that are using some kind of + memory-related resources. + +- Made the makefile only build ahost and adig if 'make demos' is used. + +* February 10, 2004 +- Dirk Manske made ares_version.h installed with 'make install' + +* February 4, 2004 +- ares_free_errmem() is subject for removal, it is simply present for future + purposes, and since we removed the extra parameter in strerror() it won't + be used by c-ares! +- configure --enable-debug now enables picky compiler options if gcc is used +- fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk + reported + +Version 1.0.0 (February 3, 2004) + +* February 3, 2004 +- now we produce the libcares.a library instead of the previous libares.a + since we are no longer compatible + +* February 2, 2004 + +- ares_strerror() has one argument less. This is the first official + modification of the existing provided ares API. + +* January 29, 2004 + +- Dirk Manske fixed how the socket is set non-blocking. + +* January 4, 2004 + +- Dominick Meglio made the private gettimeofday() become ares_gettimeofday() + instead in order to not pollute the name space and risk colliding with + other libraries' versions of this function. + +* October 24, 2003. Daniel Stenberg + + Added ares_version(). + +Version 1.0-pre1 (8 October 2003) + +- James Bursa made it run on RISC OS + +- Dominick Meglio made it run fine on NT4 + +- Duncan Wilcox made it work fine on Mac OS X + +- Daniel Stenberg adjusted the windows port + +- liren at vivisimo.com made the initial windows port + +* Imported the sources from ares 1.1.1 diff --git a/CVS-INFO b/CVS-INFO new file mode 100644 index 0000000..7d48d08 --- /dev/null +++ b/CVS-INFO @@ -0,0 +1,7 @@ + +CVS-INFO + +This file is only present in the CVS - never in release archives. It is used +as a sentinel file in buildconf.bat in order to differentiate a CVS checkout +from release and daily snapshot archives. + diff --git a/CVS/Entries b/CVS/Entries new file mode 100644 index 0000000..e8c08db --- /dev/null +++ b/CVS/Entries @@ -0,0 +1,129 @@ +/.cvsignore/1.15/Tue Nov 10 20:05:10 2009// +/AUTHORS/1.8/Fri Aug 29 08:29:47 2008// +/CHANGES/1.168/Tue Dec 29 02:32:12 2009// +/CVS-INFO/1.1/Mon Jun 8 14:26:58 2009// +/Makefile.am/1.50/Mon Nov 23 11:07:16 2009// +/Makefile.dj/1.36/Mon Sep 7 10:01:17 2009// +/Makefile.inc/1.41/Fri Nov 20 13:02:41 2009// +/Makefile.m32/1.7/Thu Apr 30 11:48:43 2009// +/Makefile.msvc/1.7/Tue Dec 29 01:51:57 2009// +/Makefile.netware/1.63/Tue Jul 14 13:38:50 2009// +/NEWS/1.2/Thu Jul 22 22:18:45 2004// +/README/1.3/Thu Jul 3 11:41:11 2008// +/README.cares/1.10/Mon Nov 23 12:03:32 2009// +/README.msvc/1.2/Tue Nov 24 09:48:32 2009// +/RELEASE-NOTES/1.48/Tue Dec 29 02:32:12 2009// +/TODO/1.3/Tue May 26 18:03:05 2009// +/acinclude.m4/1.114/Sun Jun 21 02:42:35 2009// +/acountry.c/1.18/Tue Nov 10 18:41:03 2009// +/adig.c/1.43/Mon Nov 16 20:02:12 2009// +/ahost.c/1.28/Tue Nov 10 18:41:03 2009// +/ares.h/1.72/Mon Nov 23 12:03:32 2009// +/ares__close_sockets.c/1.10/Mon Nov 2 11:55:53 2009// +/ares__get_hostent.c/1.24/Mon Nov 2 11:55:53 2009// +/ares__read_line.c/1.14/Tue Nov 10 18:41:03 2009// +/ares__timeval.c/1.6/Mon Nov 2 11:55:53 2009// +/ares_build.h.dist/1.9/Tue May 12 01:57:53 2009// +/ares_build.h.in/1.2/Wed Apr 29 14:05:21 2009// +/ares_cancel.3/1.6/Mon Nov 23 00:57:50 2009// +/ares_cancel.c/1.12/Mon Nov 2 11:55:53 2009// +/ares_data.c/1.2/Fri Nov 20 09:06:33 2009// +/ares_data.h/1.2/Mon Nov 23 12:03:33 2009// +/ares_destroy.3/1.4/Tue May 19 16:05:45 2009// +/ares_destroy.c/1.14/Mon Nov 2 11:55:53 2009// +/ares_destroy_options.3/1.1/Sat Jun 2 19:32:30 2007// +/ares_dns.h/1.8/Fri Feb 16 14:22:08 2007// +/ares_dup.3/1.3/Mon Nov 23 00:57:50 2009// +/ares_expand_name.3/1.4/Fri Nov 20 14:15:05 2009// +/ares_expand_name.c/1.20/Mon Nov 2 11:55:53 2009// +/ares_expand_string.3/1.3/Fri Nov 20 14:15:06 2009// +/ares_expand_string.c/1.10/Mon Nov 2 11:55:53 2009// +/ares_fds.3/1.2/Tue May 19 16:05:45 2009// +/ares_fds.c/1.12/Mon Nov 2 11:55:53 2009// +/ares_free_data.3/1.3/Mon Nov 23 12:03:33 2009// +/ares_free_hostent.3/1.4/Sat Jul 14 23:01:49 2007// +/ares_free_hostent.c/1.12/Mon Nov 9 12:56:50 2009// +/ares_free_string.3/1.4/Tue May 19 16:05:45 2009// +/ares_free_string.c/1.7/Mon Nov 2 11:55:53 2009// +/ares_gethostbyaddr.3/1.3/Fri Sep 28 14:46:51 2007// +/ares_gethostbyaddr.c/1.35/Mon Nov 2 11:55:53 2009// +/ares_gethostbyname.3/1.3/Fri Sep 28 14:46:51 2007// +/ares_gethostbyname.c/1.50/Mon Nov 2 11:55:53 2009// +/ares_gethostbyname_file.3/1.2/Mon Nov 23 00:57:51 2009// +/ares_getnameinfo.3/1.4/Tue May 19 16:05:45 2009// +/ares_getnameinfo.c/1.36/Mon Nov 9 12:56:11 2009// +/ares_getopt.c/1.9/Sun Nov 22 03:41:26 2009// +/ares_getopt.h/1.5/Sun Nov 22 03:51:07 2009// +/ares_getsock.3/1.3/Tue May 19 16:05:45 2009// +/ares_getsock.c/1.8/Mon Nov 2 11:55:53 2009// +/ares_init.3/1.8/Mon Nov 23 00:57:51 2009// +/ares_init.c/1.103/Wed Nov 18 10:33:54 2009// +/ares_init_options.3/1.2/Tue May 19 16:05:45 2009// +/ares_ipv6.h/1.9/Sat May 2 02:36:48 2009// +/ares_library_cleanup.3/1.5/Tue Nov 24 10:08:45 2009// +/ares_library_init.3/1.6/Tue Nov 24 10:08:46 2009// +/ares_library_init.c/1.11/Wed Nov 11 08:56:47 2009// +/ares_library_init.h/1.5/Wed Nov 11 08:56:47 2009// +/ares_llist.c/1.2/Mon Nov 2 11:55:53 2009// +/ares_llist.h/1.1/Tue Oct 2 02:18:01 2007// +/ares_mkquery.3/1.5/Fri Nov 20 14:15:06 2009// +/ares_mkquery.c/1.17/Mon Nov 2 11:55:53 2009// +/ares_parse_a_reply.3/1.5/Mon Nov 23 01:24:17 2009// +/ares_parse_a_reply.c/1.20/Mon Nov 23 01:24:17 2009// +/ares_parse_aaaa_reply.3/1.5/Mon Nov 23 01:24:17 2009// +/ares_parse_aaaa_reply.c/1.16/Mon Nov 23 01:24:17 2009// +/ares_parse_ns_reply.3/1.1/Mon Feb 19 14:06:11 2007// +/ares_parse_ns_reply.c/1.7/Mon Nov 2 11:55:53 2009// +/ares_parse_ptr_reply.3/1.3/Tue May 19 16:05:45 2009// +/ares_parse_ptr_reply.c/1.21/Mon Nov 2 11:55:53 2009// +/ares_parse_srv_reply.3/1.5/Mon Nov 23 12:03:33 2009// +/ares_parse_srv_reply.c/1.12/Thu Nov 26 01:21:21 2009// +/ares_parse_txt_reply.3/1.4/Mon Nov 23 12:03:33 2009// +/ares_parse_txt_reply.c/1.9/Thu Nov 26 01:21:21 2009// +/ares_private.h/1.50/Mon Nov 9 12:56:50 2009// +/ares_process.3/1.3/Wed May 30 12:58:47 2007// +/ares_process.c/1.80/Tue Dec 29 02:04:17 2009// +/ares_query.3/1.2/Fri Sep 28 14:46:51 2007// +/ares_query.c/1.21/Mon Nov 2 11:55:53 2009// +/ares_rules.h/1.3/Tue Oct 27 16:56:20 2009// +/ares_save_options.3/1.3/Mon Nov 23 00:57:51 2009// +/ares_search.3/1.2/Fri Sep 28 14:46:51 2007// +/ares_search.c/1.20/Mon Nov 2 11:55:53 2009// +/ares_send.3/1.3/Fri Sep 28 14:46:51 2007// +/ares_send.c/1.21/Mon Nov 2 11:55:53 2009// +/ares_set_socket_callback.3/1.2/Fri Nov 20 14:15:06 2009// +/ares_setup.h/1.2/Sat Nov 14 18:51:37 2009// +/ares_strcasecmp.c/1.2/Mon Nov 2 11:55:53 2009// +/ares_strcasecmp.h/1.2/Mon Nov 2 11:55:53 2009// +/ares_strdup.c/1.3/Mon Nov 2 11:55:53 2009// +/ares_strdup.h/1.3/Mon Nov 2 11:55:53 2009// +/ares_strerror.3/1.5/Tue May 19 16:05:45 2009// +/ares_strerror.c/1.18/Mon Nov 2 11:55:53 2009// +/ares_timeout.3/1.4/Mon Nov 23 00:57:51 2009// +/ares_timeout.c/1.13/Mon Nov 2 11:55:53 2009// +/ares_version.3/1.3/Tue May 19 16:05:45 2009// +/ares_version.c/1.5/Mon Nov 2 11:55:53 2009// +/ares_version.h/1.20/Mon Nov 30 22:39:04 2009// +/ares_writev.c/1.3/Mon Nov 2 11:55:53 2009// +/ares_writev.h/1.2/Mon Nov 2 11:55:53 2009// +/bitncmp.c/1.8/Mon Nov 2 11:55:54 2009// +/bitncmp.h/1.3/Mon Nov 19 15:47:01 2007// +/buildconf/1.13/Sun Nov 15 03:47:13 2009// +/buildconf.bat/1.3/Mon Jun 8 14:27:36 2009// +/cares.rc/1.3/Tue Nov 10 22:04:51 2009// +/config-win32.h/1.33/Mon Dec 21 16:55:39 2009// +/config.dos/1.3/Sat Jun 20 13:08:53 2009// +/configure.ac/1.174/Tue Nov 24 16:12:23 2009// +/get_ver.awk/1.1/Wed Feb 27 01:51:40 2008// +/inet_net_pton.c/1.17/Mon Nov 2 11:55:54 2009// +/inet_net_pton.h/1.6/Wed Sep 24 19:13:02 2008// +/inet_ntop.c/1.12/Mon Nov 2 11:55:54 2009// +/inet_ntop.h/1.4/Wed Sep 24 16:43:12 2008// +/install-sh/1.1/Wed Oct 8 20:18:15 2003// +/libcares.pc.in/1.3/Mon Jun 9 01:07:00 2008// +/maketgz/1.12/Thu May 21 17:40:55 2009// +/mkinstalldirs/1.2/Tue May 19 16:05:45 2009// +/nameser.h/1.29/Wed Sep 17 01:02:57 2008// +/setup_once.h/1.37/Wed Dec 30 17:59:56 2009// +/windows_port.c/1.22/Mon Nov 2 11:55:54 2009// +D diff --git a/CVS/Entries.Log b/CVS/Entries.Log new file mode 100644 index 0000000..df560e1 --- /dev/null +++ b/CVS/Entries.Log @@ -0,0 +1,2 @@ +A D/m4//// +A D/vc//// diff --git a/CVS/Repository b/CVS/Repository new file mode 100644 index 0000000..ac12e3a --- /dev/null +++ b/CVS/Repository @@ -0,0 +1 @@ +curl/ares diff --git a/CVS/Root b/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/CVS/Template b/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/CVS/Template diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..3ed8535 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,171 @@ +AUTOMAKE_OPTIONS = foreign nostdinc + +ACLOCAL_AMFLAGS = -I m4 + +# Specify our include paths here, and do it relative to $(top_srcdir) and +# $(top_builddir), to ensure that these paths which belong to the library +# being currently built and tested are searched before the library which +# might possibly already be installed in the system. +# +# When using the low-level hard-hacking memory leak tracking code from +# libcurl the generated curl/curlbuild.h file must also be reachable. +# Using the libcurl lowlevel code from within c-ares library is ugly and +# only works when c-ares is built and linked with a similarly debug-build +# libcurl, but we do this anyway for convenience. +# +# $(top_builddir)/../include/curl for generated curlbuild.h included from curl.h +# $(top_builddir)/../include is for libcurl's generated curl/curlbuild.h file +# $(top_srcdir)/../include is for libcurl's external include files +# $(top_builddir)/../lib is for libcurl's generated lib/curl_config.h file +# $(top_srcdir)/../lib is for libcurl's lib/setup.h and other "private" files +# $(top_builddir) is for c-ares's generated ares_config.h file +# $(top_srcdir) is for c-ares's ares_setup.h and other "c-ares-private" files + +if CURLDEBUG +INCLUDES = -I$(top_builddir)/../include/curl \ + -I$(top_builddir)/../include \ + -I$(top_srcdir)/../include \ + -I$(top_builddir)/../lib \ + -I$(top_srcdir)/../lib \ + -I$(top_builddir) \ + -I$(top_srcdir) +else +INCLUDES = -I$(top_builddir) \ + -I$(top_srcdir) +endif + +lib_LTLIBRARIES = libcares.la + +man_MANS = $(MANPAGES) + +MSVCFILES = vc/vc6aws.dsw vc/acountry/vc6acountry.dsp vc/adig/vc6adig.dsp \ + vc/ahost/vc6ahost.dsp vc/cares/vc6cares.dsp vc/cares/vc6cares.dsw + +if CURLDEBUG +PROGS = +else +PROGS = ahost adig acountry +endif + +noinst_PROGRAMS =$(PROGS) + +# adig and ahost are just sample programs and thus not mentioned with the +# regular sources and headers +EXTRA_DIST = AUTHORS CHANGES README.cares Makefile.inc Makefile.dj \ + Makefile.m32 Makefile.netware Makefile.msvc $(man_MANS) $(MSVCFILES) \ + config-win32.h RELEASE-NOTES libcares.pc.in buildconf get_ver.awk maketgz \ + TODO ares_build.h.in $(PDFPAGES) cares.rc README.msvc + +CLEANFILES = $(PDFPAGES) $(HTMLPAGES) + +DISTCLEANFILES = ares_build.h + +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = libcares.pc + +VER=-version-info 2:0:0 +# This flag accepts an argument of the form current[:revision[:age]]. So, +# passing -version-info 3:12:1 sets current to 3, revision to 12, and age to +# 1. +# +# If either revision or age are omitted, they default to 0. Also note that age +# must be less than or equal to the current interface number. +# +# Here are a set of rules to help you update your library version information: +# +# 1.Start with version information of 0:0:0 for each libtool library. +# +# 2.Update the version information only immediately before a public release of +# your software. More frequent updates are unnecessary, and only guarantee +# that the current interface number gets larger faster. +# +# 3.If the library source code has changed at all since the last update, then +# increment revision (c:r+1:a) +# +# 4.If any interfaces have been added, removed, or changed since the last +# update, increment current, and set revision to 0. (c+1:r=0:a) +# +# 5.If any interfaces have been added since the last public release, then +# increment age. (c:r:a+1) +# +# 6.If any interfaces have been removed since the last public release, then +# set age to 0. (c:r:a=0) +# + +if NO_UNDEFINED +# The -no-undefined flag is crucial for this to build fine on some platforms +UNDEF = -no-undefined +endif + +libcares_la_LDFLAGS = $(UNDEF) $(VER) + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +libcares_la_SOURCES = $(CSOURCES) $(HHEADERS) + +# where to install the c-ares headers +libcares_ladir = $(includedir) +# what headers to install on 'make install': +libcares_la_HEADERS = ares.h ares_version.h ares_dns.h \ + ares_build.h ares_rules.h + +ahost_SOURCES = ahost.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +ahost_LDADD = $(top_builddir)/libcares.la +ahost_CFLAGS = $(AM_CFLAGS) + +adig_SOURCES = adig.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +adig_LDADD = $(top_builddir)/libcares.la +adig_CFLAGS = $(AM_CFLAGS) + +acountry_SOURCES = acountry.c $(SAMPLESOURCES) $(SAMPLEHEADERS) +acountry_LDADD = $(top_builddir)/libcares.la +acountry_CFLAGS = $(AM_CFLAGS) + +SOURCEDMANDIR = man3 +SOURCEDMANPAGES = ares_init.3 + +clean-local: clean-sourced-manpages + +clean-sourced-manpages: + @srcdmandir='$(SOURCEDMANDIR)'; \ + echo "rm -rf $(top_builddir)/$$srcdmandir"; \ + rm -rf $(top_builddir)/$$srcdmandir + +sourced-manpages: clean-sourced-manpages + @srcdmandir='$(SOURCEDMANDIR)'; \ + srcdmanfiles='$(SOURCEDMANPAGES)'; \ + mkdir $(top_builddir)/$$srcdmandir; \ + for file in $$srcdmanfiles; do \ + if test -f $(top_srcdir)/$$file; then \ + echo "cp $(top_srcdir)/$$file $(top_builddir)/$$srcdmandir/$$file"; \ + cp $(top_srcdir)/$$file $(top_builddir)/$$srcdmandir/$$file; \ + fi; \ + done + +MAN2HTML = roffit --mandir=. < $< >$@ + +SUFFIXES = .3 .html + +html: sourced-manpages $(HTMLPAGES) + +.3.html: + $(MAN2HTML) + +pdf: sourced-manpages $(PDFPAGES) + +.3.pdf: + @(foo=`echo $@ | sed -e 's/\.[0-9]$$//g'`; \ + groff -Tps -man $< >$$foo.ps; \ + ps2pdf $$foo.ps $@; \ + rm $$foo.ps; \ + echo "converted $< to $@") + +# Make files named *.dist replace the file without .dist extension +dist-hook: + find $(distdir) -name "*.dist" -exec rm {} \; + (distit=`find $(srcdir) -name "*.dist"`; \ + for file in $$distit; do \ + strip=`echo $$file | sed -e s/^$(srcdir)// -e s/\.dist//`; \ + cp $$file $(distdir)$$strip; \ + done) diff --git a/Makefile.dj b/Makefile.dj new file mode 100644 index 0000000..fce18d8 --- /dev/null +++ b/Makefile.dj @@ -0,0 +1,86 @@ +# +# c-ares Makefile for djgpp/gcc/Watt-32. +# By Gisle Vanem <gvanem@broadpark.no> 2004. +# +# $Id: Makefile.dj,v 1.36 2009-09-07 10:01:17 giva Exp $ + + +TOPDIR = .. + +DEPEND_PREREQ = ares_config.h + +include ../packages/DOS/common.dj +include Makefile.inc + +CFLAGS += -DWATT32 -Dselect=select_s + +LDFLAGS = -s + +ifeq ($(USE_CURLDEBUG),1) + EX_LIBS = ../lib/libcurl.a + OBJ_HACK = $(OBJECTS) +else + OBJ_HACK = libcares.a +endif + +ifeq ($(USE_SSL),1) + EX_LIBS += $(OPENSSL_ROOT)/lib/libssl.a $(OPENSSL_ROOT)/lib/libcrypt.a +endif + +ifeq ($(USE_ZLIB),1) + EX_LIBS += $(ZLIB_ROOT)/libz.a +endif + +ifeq ($(USE_IDNA),1) + EX_LIBS += $(LIBIDN_ROOT)/lib/dj_obj/libidn.a -liconv +endif + +EX_LIBS += $(WATT32_ROOT)/lib/libwatt.a + +OBJECTS = $(addprefix $(OBJ_DIR)/, $(CSOURCES:.c=.o)) + +all: $(OBJ_DIR) ares_config.h libcares.a ahost.exe adig.exe acountry.exe + @echo Welcome to c-ares. + +libcares.a: $(OBJECTS) + ar rs $@ $? + +ares_config.h: config.dos + $(COPY) $^ $@ + +ahost.exe: ahost.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +adig.exe: adig.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +acountry.exe: acountry.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK) + $(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS) + +# clean generated files +# +genclean: + - $(DELETE) ares_config.h + +# clean object files and subdir +# +objclean: genclean + - $(DELETE) $(OBJ_DIR)$(DS)*.o + - $(RMDIR) $(OBJ_DIR) + +# clean without removing built library and programs +# +clean: objclean + - $(DELETE) depend.dj + +# clean everything +# +realclean vclean: clean + - $(DELETE) libcares.a + - $(DELETE) acountry.exe + - $(DELETE) adig.exe + - $(DELETE) ahost.exe + - $(DELETE) libcares.a + +-include depend.dj + diff --git a/Makefile.inc b/Makefile.inc new file mode 100644 index 0000000..3227858 --- /dev/null +++ b/Makefile.inc @@ -0,0 +1,179 @@ + +CSOURCES = ares__close_sockets.c \ + ares__get_hostent.c \ + ares__read_line.c \ + ares__timeval.c \ + ares_cancel.c \ + ares_data.c \ + ares_destroy.c \ + ares_expand_name.c \ + ares_expand_string.c \ + ares_fds.c \ + ares_free_hostent.c \ + ares_free_string.c \ + ares_gethostbyaddr.c \ + ares_gethostbyname.c \ + ares_getnameinfo.c \ + ares_getsock.c \ + ares_init.c \ + ares_library_init.c \ + ares_llist.c \ + ares_mkquery.c \ + ares_parse_a_reply.c \ + ares_parse_aaaa_reply.c \ + ares_parse_ns_reply.c \ + ares_parse_ptr_reply.c \ + ares_parse_srv_reply.c \ + ares_parse_txt_reply.c \ + ares_process.c \ + ares_query.c \ + ares_search.c \ + ares_send.c \ + ares_strcasecmp.c \ + ares_strdup.c \ + ares_strerror.c \ + ares_timeout.c \ + ares_version.c \ + ares_writev.c \ + bitncmp.c \ + inet_net_pton.c \ + inet_ntop.c \ + windows_port.c + +HHEADERS = ares.h \ + ares_build.h \ + ares_data.h \ + ares_dns.h \ + ares_ipv6.h \ + ares_library_init.h \ + ares_llist.h \ + ares_private.h \ + ares_rules.h \ + ares_strcasecmp.h \ + ares_strdup.h \ + ares_version.h \ + ares_writev.h \ + bitncmp.h \ + inet_net_pton.h \ + inet_ntop.h \ + nameser.h \ + ares_setup.h \ + setup_once.h + +MANPAGES = ares_cancel.3 \ + ares_destroy.3 \ + ares_destroy_options.3 \ + ares_dup.3 \ + ares_expand_name.3 \ + ares_expand_string.3 \ + ares_fds.3 \ + ares_free_data.3 \ + ares_free_hostent.3 \ + ares_free_string.3 \ + ares_gethostbyaddr.3 \ + ares_gethostbyname.3 \ + ares_gethostbyname_file.3 \ + ares_getnameinfo.3 \ + ares_getsock.3 \ + ares_init.3 \ + ares_init_options.3 \ + ares_library_cleanup.3 \ + ares_library_init.3 \ + ares_mkquery.3 \ + ares_parse_a_reply.3 \ + ares_parse_aaaa_reply.3 \ + ares_parse_ns_reply.3 \ + ares_parse_ptr_reply.3 \ + ares_parse_srv_reply.3 \ + ares_parse_txt_reply.3 \ + ares_process.3 \ + ares_query.3 \ + ares_save_options.3 \ + ares_search.3 \ + ares_send.3 \ + ares_set_socket_callback.3 \ + ares_strerror.3 \ + ares_timeout.3 \ + ares_version.3 + +HTMLPAGES = ares_cancel.html \ + ares_destroy.html \ + ares_destroy_options.html \ + ares_dup.html \ + ares_expand_name.html \ + ares_expand_string.html \ + ares_fds.html \ + ares_free_data.html \ + ares_free_hostent.html \ + ares_free_string.html \ + ares_gethostbyaddr.html \ + ares_gethostbyname.html \ + ares_gethostbyname_file.html \ + ares_getnameinfo.html \ + ares_getsock.html \ + ares_init.html \ + ares_init_options.html \ + ares_library_cleanup.html \ + ares_library_init.html \ + ares_mkquery.html \ + ares_parse_a_reply.html \ + ares_parse_aaaa_reply.html \ + ares_parse_ns_reply.html \ + ares_parse_ptr_reply.html \ + ares_parse_srv_reply.html \ + ares_parse_txt_reply.html \ + ares_process.html \ + ares_query.html \ + ares_save_options.html \ + ares_search.html \ + ares_send.html \ + ares_set_socket_callback.html \ + ares_strerror.html \ + ares_timeout.html \ + ares_version.html + +PDFPAGES = ares_cancel.pdf \ + ares_destroy.pdf \ + ares_destroy_options.pdf \ + ares_dup.pdf \ + ares_expand_name.pdf \ + ares_expand_string.pdf \ + ares_fds.pdf \ + ares_free_data.pdf \ + ares_free_hostent.pdf \ + ares_free_string.pdf \ + ares_gethostbyaddr.pdf \ + ares_gethostbyname.pdf \ + ares_gethostbyname_file.pdf \ + ares_getnameinfo.pdf \ + ares_getsock.pdf \ + ares_init.pdf \ + ares_init_options.pdf \ + ares_library_cleanup.pdf \ + ares_library_init.pdf \ + ares_mkquery.pdf \ + ares_parse_a_reply.pdf \ + ares_parse_aaaa_reply.pdf \ + ares_parse_ns_reply.pdf \ + ares_parse_ptr_reply.pdf \ + ares_parse_srv_reply.pdf \ + ares_parse_txt_reply.pdf \ + ares_process.pdf \ + ares_query.pdf \ + ares_save_options.pdf \ + ares_search.pdf \ + ares_send.pdf \ + ares_set_socket_callback.pdf \ + ares_strerror.pdf \ + ares_timeout.pdf \ + ares_version.pdf + +SAMPLESOURCES = ares_getopt.c \ + ares_strcasecmp.c \ + inet_net_pton.c \ + inet_ntop.c + +SAMPLEHEADERS = ares_getopt.h \ + ares_strcasecmp.h \ + inet_net_pton.h \ + inet_ntop.h diff --git a/Makefile.m32 b/Makefile.m32 new file mode 100644 index 0000000..cabb599 --- /dev/null +++ b/Makefile.m32 @@ -0,0 +1,69 @@ +############################################################# +# $Id: Makefile.m32,v 1.7 2009-04-30 11:48:43 yangtse Exp $ +# +## Makefile for building libcares.a with MingW32 (GCC-3.2) +## Use: make -f Makefile.m32 [demos] +## +## Quick hack by Guenter; comments to: /dev/nul +# +######################################################## +## Nothing more to do below this line! + +LIB = libcares.a + +CC = gcc +LD = gcc +RANLIB = ranlib +#RM = rm -f + +CFLAGS = -O2 -Wall +LDFLAGS = -s +LIBS = -lwsock32 + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +OBJLIB := $(patsubst %.c,%.o,$(strip $(CSOURCES))) + + +$(LIB): $(OBJLIB) + ar cru $@ $^ + $(RANLIB) $@ + +all: $(LIB) demos + +demos: adig.exe ahost.exe acountry.exe + +tags: + etags *.[ch] + +%.exe: %.o ares_getopt.o $(LIB) + $(LD) $(LDFLAGS) -o $@ $^ $(LIBS) + +$(OBJLIB): ares.h ares_dns.h ares_private.h ares_build.h ares_rules.h + +.c.o: + $(CC) $(CFLAGS) -c $< + +check: + +install: + ${top_srcdir}/mkinstalldirs ${DESTDIR}${libdir} + ${top_srcdir}/mkinstalldirs ${DESTDIR}${includedir} + ${top_srcdir}/mkinstalldirs ${DESTDIR}${mandir}/man3 + ${INSTALL} -m 644 $(LIB) ${DESTDIR}${libdir} + ${RANLIB} ${DESTDIR}${libdir}/$(LIB) + chmod u-w ${DESTDIR}${libdir}/$(LIB) + ${INSTALL} -m 444 ${srcdir}/ares.h ${DESTDIR}${includedir} + ${INSTALL} -m 444 ${srcdir}/ares_build.h ${DESTDIR}${includedir} + ${INSTALL} -m 444 ${srcdir}/ares_rules.h ${DESTDIR}${includedir} + (for man in $(MANPAGES); do \ + ${INSTALL} -m 444 ${srcdir}/$${man} ${DESTDIR}${mandir}/man3; \ + done) + +clean: + $(RM) ares_getopt.o $(OBJLIB) $(LIB) adig.exe ahost.exe acountry.exe + +distclean: clean + $(RM) config.cache config.log config.status Makefile + diff --git a/Makefile.msvc b/Makefile.msvc new file mode 100644 index 0000000..bea3ee3 --- /dev/null +++ b/Makefile.msvc @@ -0,0 +1,473 @@ +# $Id: Makefile.msvc,v 1.7 2009-12-29 01:51:57 yangtse Exp $ + +# Copyright (C) 2009 by Daniel Stenberg +# +# Permission to use, copy, modify, and distribute this +# software and its documentation for any purpose and without +# fee is hereby granted, provided that the above copyright +# notice appear in all copies and that both that copyright +# notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in +# advertising or publicity pertaining to distribution of the +# software without specific, written prior permission. +# M.I.T. makes no representations about the suitability of +# this software for any purpose. It is provided "as is" +# without express or implied warranty. + +# ------------------------------------------------------------------------------ +# +# Makefile for building c-ares libraries and sample programs with MSVC. +# +# Usage: nmake /f makefile.msvc CFG=<config> <target> +# +# <config> must be one of: [ lib-release | lib-debug | dll-release | dll-debug } +# <target> must be one of: [ ALL | c-ares | acountry | adig | ahost | clean } +# +# If a <target> other than ALL or clean is given, <config> becomes mandatory. +# +# If neither <config> nor <target> are specified this results in +# all targets being built for all <config> c-ares library types. +# +# This makefile must be processed from the subdir where it is located. +# +# All results are generated below a subdirectory named msvcXXX. +# +# ------------------------------------------------------------------------------ + +NAME = cares + +# ------------------------------------------------ +# c-ares static and dynamic libraries common base +# file names for release and debug configurations +# ------------------------------------------------ + +STA_LIB_REL = lib$(NAME) +DYN_LIB_REL = $(NAME) +STA_LIB_DBG = $(STA_LIB_REL)d +DYN_LIB_DBG = $(DYN_LIB_REL)d + +# ------------------------------------------- +# Base names for c-ares DLL import libraries +# ------------------------------------------- + +IMP_LIB_REL = $(DYN_LIB_REL) +IMP_LIB_DBG = $(DYN_LIB_DBG) + +# -------------------------- +# Runtime library selection +# -------------------------- + +RTLIB = /MD +RTLIBD = /MDd + +!IF "$(RTLIBCFG)" == "static" +RTLIB = /MT +RTLIBD = /MTd +!ENDIF + +# -------------------------------------------------------- +# Define USE_WATT32 to 1 to use the Watt-32 tcp/ip stack, +# otherwise Winsock tcp/ip stack will be used as default. +# -------------------------------------------------------- + +USE_WATT32 = 0 + +# ------------------------------------------- +# Detect NMAKE version deducing MSVC version +# ------------------------------------------- + +!IFNDEF _NMAKE_VER +! MESSAGE Macro _NMAKE_VER not defined. +! MESSAGE Use MSVC's NMAKE to process this makefile. +! ERROR See previous message. +!ENDIF + +!IF "$(_NMAKE_VER)" == "6.00.8168.0" +CC_VERS_NUM = 60 +!ELSEIF "$(_NMAKE_VER)" == "6.00.9782.0" +CC_VERS_NUM = 60 +!ELSEIF "$(_NMAKE_VER)" == "7.00.9466" +CC_VERS_NUM = 70 +!ELSEIF "$(_NMAKE_VER)" == "7.00.9955" +CC_VERS_NUM = 70 +!ELSEIF "$(_NMAKE_VER)" == "7.10.3077" +CC_VERS_NUM = 71 +!ELSEIF "$(_NMAKE_VER)" == "8.00.40607.16" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "8.00.50727.42" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "8.00.50727.762" +CC_VERS_NUM = 80 +!ELSEIF "$(_NMAKE_VER)" == "9.00.21022.08" +CC_VERS_NUM = 90 +!ELSEIF "$(_NMAKE_VER)" == "9.00.30729.01" +CC_VERS_NUM = 90 +!ELSEIF "$(_NMAKE_VER)" == "10.00.20506.01" +CC_VERS_NUM = 100 +!ELSE +! MESSAGE Unknown value for _NMAKE_VER macro: "$(_NMAKE_VER)" +! MESSAGE Please, report this condition on the c-ares development +! MESSAGE mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ +! ERROR See previous message. +!ENDIF + +CC_VERS_STR = msvc$(CC_VERS_NUM) + +# ---------------------------------------------------- +# Verify that current subdir is the c-ares source one +# ---------------------------------------------------- + +!IF ! EXIST(.\ares_init.c) +! MESSAGE Can not process Makefile.msvc from outside of c-ares source subdirectory. +! MESSAGE Change to the subdirectory where Makefile.msvc is found, and try again. +! ERROR See previous message. +!ENDIF + +# ------------------------------------------------------------------ +# Base subdir is the common root from which other subdirs will hang, +# the name depends on MSVC version being used when building c-ares. +# ------------------------------------------------------------------ + +BASE_DIR = .\$(CC_VERS_STR) + +# ---------------------------------------- +# Subdir holding sources for all projects +# ---------------------------------------- + +SRCDIR = . + +# ------------------------- +# Configuration validation +# ------------------------- + +VALID_CFGSET = FALSE +!IF "$(CFG)" == "lib-release" || "$(CFG)" == "lib-debug" || \ + "$(CFG)" == "dll-release" || "$(CFG)" == "dll-debug" +VALID_CFGSET = TRUE +!ENDIF + +!IF "$(VALID_CFGSET)" == "FALSE" && "$(CFG)" != "" +! MESSAGE MSVC c-ares makefile +! MESSAGE +! MESSAGE Usage: nmake /f makefile.msvc CFG=<config> <target> +! MESSAGE +! MESSAGE <config> must be one of: [ lib-release | lib-debug | dll-release | dll-debug } +! MESSAGE <target> must be one of: [ ALL | c-ares | acountry | adig | ahost | clean } +! MESSAGE +! MESSAGE If a <target> other than ALL or clean is given, <config> becomes mandatory. +! MESSAGE +! MESSAGE If neither <config> nor <target> are specified this results in +! MESSAGE all targets being built for all <config> c-ares library types. +! MESSAGE +! ERROR Choose a valid configuration. +!ENDIF + +# -------------------------------------------------------- +# Project subdirs independent of configuration being used +# -------------------------------------------------------- + +CARES_DIR = $(BASE_DIR)\cares +PROG1_DIR = $(BASE_DIR)\acountry +PROG2_DIR = $(BASE_DIR)\adig +PROG3_DIR = $(BASE_DIR)\ahost + +# --------------------------------------------------- +# Subdirs which are configuration dependent are only +# defined when a valid configuration has been given. +# --------------------------------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" +CARES_OUTDIR = $(CARES_DIR)\$(CFG) +PROG1_OUTDIR = $(PROG1_DIR)\$(CFG) +PROG2_OUTDIR = $(PROG2_DIR)\$(CFG) +PROG3_OUTDIR = $(PROG3_DIR)\$(CFG) +CARES_OBJDIR = $(CARES_OUTDIR)\obj +PROG1_OBJDIR = $(PROG1_OUTDIR)\obj +PROG2_OBJDIR = $(PROG2_OUTDIR)\obj +PROG3_OBJDIR = $(PROG3_OUTDIR)\obj +!ELSE +!UNDEF CARES_OUTDIR +!UNDEF PROG1_OUTDIR +!UNDEF PROG2_OUTDIR +!UNDEF PROG3_OUTDIR +!UNDEF CARES_OBJDIR +!UNDEF PROG1_OBJDIR +!UNDEF PROG2_OBJDIR +!UNDEF PROG3_OBJDIR +!ENDIF + +# ------------------------------------- +# Settings that depend on tcp/ip stack +# ------------------------------------- + +!IF "$(USE_WATT32)" == "1" +CFLAGS = /UWIN32 /DWATT32 /I$(WATT_ROOT)\inc +EX_LIBS_REL = $(WATT_ROOT)\lib\wattcpvc_imp.lib +EX_LIBS_DBG = $(WATT_ROOT)\lib\wattcpvc_imp_d.lib +!ELSE +CFLAGS = /DWIN32 +EX_LIBS_REL = ws2_32.lib advapi32.lib kernel32.lib +EX_LIBS_DBG = ws2_32.lib advapi32.lib kernel32.lib +!ENDIF + +# ----------------------------------------- +# Switches that depend on compiler version +# ----------------------------------------- + +!IF $(CC_VERS_NUM) == 60 +PDB_NONE = /pdb:none +PDBTYPE_CONSOLIDATE = /pdbtype:consolidate +!ELSE +!UNDEF PDB_NONE +!UNDEF PDBTYPE_CONSOLIDATE +!ENDIF + +!IF $(CC_VERS_NUM) <= 70 +RT_ERROR_CHECKING = /GZ +!ELSE +RT_ERROR_CHECKING = /RTCsu +!ENDIF + +# ---------------------------- +# Assorted commands and flags +# ---------------------------- + +CC_CMD_REL = cl.exe /nologo $(RTLIB) /DNDEBUG /O2 +CC_CMD_DBG = cl.exe /nologo $(RTLIBD) /D_DEBUG /Od /Zi $(RT_ERROR_CHECKING) +CC_CFLAGS = $(CFLAGS) /I. /W3 /EHsc /FD + +RC_CMD_REL = rc.exe /l 0x409 /d "NDEBUG" +RC_CMD_DBG = rc.exe /l 0x409 /d "_DEBUG" + +LINK_CMD_LIB = link.exe /lib /nologo +LINK_CMD_DLL = link.exe /dll /nologo /incremental:no /fixed:no +LINK_CMD_EXE = link.exe /nologo /incremental:no /fixed:no /subsystem:console + +LINK_CMD_EXE_REL = $(LINK_CMD_EXE) /release $(PDB_NONE) +LINK_CMD_EXE_DBG = $(LINK_CMD_EXE) /debug $(PDBTYPE_CONSOLIDATE) + +# --------------------------------- +# Configuration dependent settings +# --------------------------------- + +!IF "$(CFG)" == "lib-release" +CARES_TARGET = $(STA_LIB_REL).lib +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DCARES_STATICLIB +CARES_LFLAGS = +SPROG_CFLAGS = /DCARES_STATICLIB +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_REL) $(STA_LIB_REL).lib +CARES_LINK = $(LINK_CMD_LIB) +SPROG_LINK = $(LINK_CMD_EXE_REL) +CC_CMD = $(CC_CMD_REL) +!ENDIF + +!IF "$(CFG)" == "lib-debug" +CARES_TARGET = $(STA_LIB_DBG).lib +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DCARES_STATICLIB /DDEBUGBUILD +CARES_LFLAGS = +SPROG_CFLAGS = /DCARES_STATICLIB +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_DBG) $(STA_LIB_DBG).lib +CARES_LINK = $(LINK_CMD_LIB) +SPROG_LINK = $(LINK_CMD_EXE_DBG) +CC_CMD = $(CC_CMD_DBG) +!ENDIF + +!IF "$(CFG)" == "dll-release" +CARES_TARGET = $(DYN_LIB_REL).dll +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY +CARES_LFLAGS = /release $(EX_LIBS_REL) /implib:$(CARES_OUTDIR)\$(IMP_LIB_REL).lib $(PDB_NONE) +SPROG_CFLAGS = +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_REL) $(IMP_LIB_REL).lib +CARES_LINK = $(LINK_CMD_DLL) +SPROG_LINK = $(LINK_CMD_EXE_REL) +CC_CMD = $(CC_CMD_REL) +USE_RES_FILE = TRUE +RC_CMD = $(RC_CMD_REL) +!ENDIF + +!IF "$(CFG)" == "dll-debug" +CARES_TARGET = $(DYN_LIB_DBG).dll +CARES_CFLAGS = /DCARES_BUILDING_LIBRARY /DDEBUGBUILD +CARES_LFLAGS = /debug $(EX_LIBS_DBG) /implib:$(CARES_OUTDIR)\$(IMP_LIB_DBG).lib /pdb:$(CARES_OUTDIR)\$(DYN_LIB_DBG).pdb $(PDBTYPE_CONSOLIDATE) +SPROG_CFLAGS = +SPROG_LFLAGS = /libpath:$(CARES_OUTDIR) $(EX_LIBS_DBG) $(IMP_LIB_DBG).lib +CARES_LINK = $(LINK_CMD_DLL) +SPROG_LINK = $(LINK_CMD_EXE_DBG) +CC_CMD = $(CC_CMD_DBG) +USE_RES_FILE = TRUE +RC_CMD = $(RC_CMD_DBG) +!ENDIF + +# -------------------------------------------- +# Makefile.inc provides lists of source files +# -------------------------------------------- + +!INCLUDE .\Makefile.inc + +# ---------------------------- +# Build lists of object files +# ---------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" + +!IF [ECHO CARES_OBJS=^$(CARES_OBJDIR)\$(CSOURCES: = $(CARES_OBJDIR^)\) > .\cares_objs.inc] == 0 +!INCLUDE .\cares_objs.inc +!IF [DEL .\cares_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating CARES_OBJS list. +!ENDIF +CARES_OBJS = $(CARES_OBJS:.c=.obj) +!IF "$(USE_RES_FILE)" == "TRUE" +CARES_OBJS = $(CARES_OBJS) $(CARES_OBJDIR)\cares.res +!ENDIF + +!IF [ECHO PROG1_OBJS=^$(PROG1_OBJDIR)\$(SAMPLESOURCES: = $(PROG1_OBJDIR^)\) > .\prog1_objs.inc] == 0 +!INCLUDE .\prog1_objs.inc +!IF [DEL .\prog1_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG1_OBJS list. +!ENDIF +PROG1_OBJS = $(PROG1_OBJS:.c=.obj) +PROG1_OBJS = $(PROG1_OBJS) $(PROG1_OBJDIR)\acountry.obj + +!IF [ECHO PROG2_OBJS=^$(PROG2_OBJDIR)\$(SAMPLESOURCES: = $(PROG2_OBJDIR^)\) > .\prog2_objs.inc] == 0 +!INCLUDE .\prog2_objs.inc +!IF [DEL .\prog2_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG2_OBJS list. +!ENDIF +PROG2_OBJS = $(PROG2_OBJS:.c=.obj) +PROG2_OBJS = $(PROG2_OBJS) $(PROG2_OBJDIR)\adig.obj + +!IF [ECHO PROG3_OBJS=^$(PROG3_OBJDIR)\$(SAMPLESOURCES: = $(PROG3_OBJDIR^)\) > .\prog3_objs.inc] == 0 +!INCLUDE .\prog3_objs.inc +!IF [DEL .\prog3_objs.inc] +!ENDIF +!ELSE +!ERROR Problem generating PROG3_OBJS list. +!ENDIF +PROG3_OBJS = $(PROG3_OBJS:.c=.obj) +PROG3_OBJS = $(PROG3_OBJS) $(PROG3_OBJDIR)\ahost.obj + +!ENDIF + +# -------------------------------- +# Only our custom inference rules +# -------------------------------- + +.SUFFIXES: +.SUFFIXES: .c .rc + +{$(SRCDIR)}.rc{$(CARES_OBJDIR)}.res: + $(RC_CMD) /Fo $@ $< + +{$(SRCDIR)}.c{$(CARES_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(CARES_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG1_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG2_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +{$(SRCDIR)}.c{$(PROG3_OBJDIR)}.obj: + $(CC_CMD) $(CC_CFLAGS) $(SPROG_CFLAGS) /Fo$@ /Fd$(@D)\ /c $< + +# ------------------------------------------------------------- # +# ------------------------------------------------------------- # +# Default target when no CFG library type has been specified, # +# results in building target ALL for all c-ares library types. # +# ------------------------------------------------------------- # +# ------------------------------------------------------------- # + +!IF "$(VALID_CFGSET)" == "FALSE" + +ALL: + $(MAKE) /f .\Makefile.msvc CFG=lib-release ALL + $(MAKE) /f .\Makefile.msvc CFG=lib-debug ALL + $(MAKE) /f .\Makefile.msvc CFG=dll-release ALL + $(MAKE) /f .\Makefile.msvc CFG=dll-debug ALL + +clean: + @-RMDIR /S /Q $(BASE_DIR) >NUL 2>&1 + +!ENDIF + +# --------------------------------------------------------------------- +# Targets only available when a proper CFG library type has been given +# --------------------------------------------------------------------- + +!IF "$(VALID_CFGSET)" == "TRUE" + +ALL: c-ares acountry adig ahost + @ + +c-ares: $(HHEADERS) $(CSOURCES) $(CARES_OBJDIR) $(CARES_OBJS) $(CARES_OUTDIR) + $(CARES_LINK) $(CARES_LFLAGS) /out:$(CARES_OUTDIR)\$(CARES_TARGET) $(CARES_OBJS) +! IF "$(USE_RES_FILE)" == "TRUE" + @if exist $(CARES_OUTDIR)\$(CARES_TARGET).manifest mt -nologo -manifest $(CARES_OUTDIR)\$(CARES_TARGET).manifest -outputresource:$(CARES_OUTDIR)\$(CARES_TARGET);2 +! ENDIF + +acountry: c-ares acountry.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG1_OBJDIR) $(PROG1_OBJS) $(PROG1_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG1_OUTDIR)\acountry.exe $(PROG1_OBJS) + @if exist $(PROG1_OUTDIR)\acountry.exe.manifest mt -nologo -manifest $(PROG1_OUTDIR)\acountry.exe.manifest -outputresource:$(PROG1_OUTDIR)\acountry.exe;1 + +adig: c-ares adig.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG2_OBJDIR) $(PROG2_OBJS) $(PROG2_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG2_OUTDIR)\adig.exe $(PROG2_OBJS) + @if exist $(PROG2_OUTDIR)\adig.exe.manifest mt -nologo -manifest $(PROG2_OUTDIR)\adig.exe.manifest -outputresource:$(PROG2_OUTDIR)\adig.exe;1 + +ahost: c-ares ahost.c $(SAMPLESOURCES) $(SAMPLEHEADERS) $(PROG3_OBJDIR) $(PROG3_OBJS) $(PROG3_OUTDIR) + $(SPROG_LINK) $(SPROG_LFLAGS) /out:$(PROG3_OUTDIR)\ahost.exe $(PROG3_OBJS) + @if exist $(PROG3_OUTDIR)\ahost.exe.manifest mt -nologo -manifest $(PROG3_OUTDIR)\ahost.exe.manifest -outputresource:$(PROG3_OUTDIR)\ahost.exe;1 + +$(CARES_OUTDIR): $(CARES_DIR) + @if not exist $(CARES_OUTDIR) mkdir $(CARES_OUTDIR) + +$(PROG1_OUTDIR): $(PROG1_DIR) + @if not exist $(PROG1_OUTDIR) mkdir $(PROG1_OUTDIR) + +$(PROG2_OUTDIR): $(PROG2_DIR) + @if not exist $(PROG2_OUTDIR) mkdir $(PROG2_OUTDIR) + +$(PROG3_OUTDIR): $(PROG3_DIR) + @if not exist $(PROG3_OUTDIR) mkdir $(PROG3_OUTDIR) + +$(CARES_OBJDIR): $(CARES_OUTDIR) + @if not exist $(CARES_OBJDIR) mkdir $(CARES_OBJDIR) + +$(PROG1_OBJDIR): $(PROG1_OUTDIR) + @if not exist $(PROG1_OBJDIR) mkdir $(PROG1_OBJDIR) + +$(PROG2_OBJDIR): $(PROG2_OUTDIR) + @if not exist $(PROG2_OBJDIR) mkdir $(PROG2_OBJDIR) + +$(PROG3_OBJDIR): $(PROG3_OUTDIR) + @if not exist $(PROG3_OBJDIR) mkdir $(PROG3_OBJDIR) + +clean: + @-RMDIR /S /Q $(CARES_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG1_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG2_OUTDIR) >NUL 2>&1 + @-RMDIR /S /Q $(PROG3_OUTDIR) >NUL 2>&1 + +!ENDIF + +$(BASE_DIR): + @if not exist $(BASE_DIR) mkdir $(BASE_DIR) + +$(CARES_DIR): $(BASE_DIR) + @if not exist $(CARES_DIR) mkdir $(CARES_DIR) + +$(PROG1_DIR): $(BASE_DIR) + @if not exist $(PROG1_DIR) mkdir $(PROG1_DIR) + +$(PROG2_DIR): $(BASE_DIR) + @if not exist $(PROG2_DIR) mkdir $(PROG2_DIR) + +$(PROG3_DIR): $(BASE_DIR) + @if not exist $(PROG3_DIR) mkdir $(PROG3_DIR) + +# End of Makefile.msvc diff --git a/Makefile.netware b/Makefile.netware new file mode 100644 index 0000000..393c7dd --- /dev/null +++ b/Makefile.netware @@ -0,0 +1,429 @@ +################################################################# +# $Id: Makefile.netware,v 1.63 2009-07-14 13:38:50 gknauf Exp $ +# +## Makefile for building libcares (NetWare version - gnu make) +## Use: make -f Makefile.netware +## +## Comments to: Guenter Knauf http://www.gknw.de/phpbb +# +################################################################# + +# Edit the path below to point to the base of your Novell NDK. +ifndef NDKBASE +NDKBASE = c:/novell +endif + +ifndef INSTDIR +INSTDIR = ../ares-$(LIBCARES_VERSION_STR)-bin-nw +endif + +# Edit the vars below to change NLM target settings. +TARGETS = adig.nlm ahost.nlm acountry.nlm +LTARGET = libcares.$(LIBEXT) +VERSION = $(LIBCARES_VERSION) +COPYR = Copyright (C) 1996 - 2008, Daniel Stenberg, <daniel@haxx.se> +DESCR = cURL $(subst .def,,$(notdir $@)) $(LIBCARES_VERSION_STR) - http://curl.haxx.se +MTSAFE = YES +STACK = 64000 +SCREEN = none +#EXPORTS = +# Comment the line below if you dont want to load protected automatically. +#LDRING = 3 + +# Edit the var below to point to your lib architecture. +ifndef LIBARCH +LIBARCH = LIBC +endif + +# must be equal to NDEBUG or DEBUG, CURLDEBUG +ifndef DB +DB = NDEBUG +endif +# Optimization: -O<n> or debugging: -g +ifeq ($(DB),NDEBUG) + OPT = -O2 + OBJDIR = release +else + OPT = -g + OBJDIR = debug +endif + +# Include the version info retrieved from curlver.h +-include $(OBJDIR)/version.inc + +# The following lines defines your compiler. +ifdef CWFolder + METROWERKS = $(CWFolder) +endif +ifdef METROWERKS + # MWCW_PATH = $(subst \,/,$(METROWERKS))/Novell Support + MWCW_PATH = $(subst \,/,$(METROWERKS))/Novell Support/Metrowerks Support + CC = mwccnlm +else + CC = gcc +endif +# a native win32 awk can be downloaded from here: +# http://www.gknw.net/development/prgtools/awk-20070501.zip +AWK = awk +YACC = bison -y +CP = cp -afv +MKDIR = mkdir +# RM = rm -f +# if you want to mark the target as MTSAFE you will need a tool for +# generating the xdc data for the linker; here's a minimal tool: +# http://www.gknw.net/development/prgtools/mkxdc.zip +MPKXDC = mkxdc + +# Global flags for all compilers +CFLAGS += $(OPT) -D$(DB) -DNETWARE -DHAVE_CONFIG_H -nostdinc + +ifeq ($(CC),mwccnlm) +LD = mwldnlm +LDFLAGS = -nostdlib $(PRELUDE) $(OBJEXE) $(<:.def=.o) -o $@ -commandfile +AR = mwldnlm +ARFLAGS = -nostdlib -type library -o +LIBEXT = lib +#RANLIB = +CFLAGS += -msgstyle gcc -gccinc -inline off -opt nointrinsics -proc 586 +CFLAGS += -relax_pointers +#CFLAGS += -w on +ifeq ($(LIBARCH),LIBC) + PRELUDE = $(SDK_LIBC)/imports/libcpre.o + CFLAGS += -align 4 +else + # PRELUDE = $(SDK_CLIB)/imports/clibpre.o + # to avoid the __init_* / __deinit_* whoes dont use prelude from NDK + PRELUDE = "$(MWCW_PATH)/libraries/runtime/prelude.obj" + # CFLAGS += -include "$(MWCW_PATH)/headers/nlm_clib_prefix.h" + CFLAGS += -align 1 +endif +else +LD = nlmconv +LDFLAGS = -T +AR = ar +ARFLAGS = -cq +LIBEXT = a +RANLIB = ranlib +CFLAGS += -fno-builtin -fpcc-struct-return -fno-strict-aliasing +CFLAGS += -Wall -Wno-format -Wno-uninitialized # -pedantic +ifeq ($(LIBARCH),LIBC) + PRELUDE = $(SDK_LIBC)/imports/libcpre.gcc.o +else + # PRELUDE = $(SDK_CLIB)/imports/clibpre.gcc.o + # to avoid the __init_* / __deinit_* whoes dont use prelude from NDK + # http://www.gknw.net/development/mk_nlm/gcc_pre.zip + PRELUDE = $(NDK_ROOT)/pre/prelude.o + CFLAGS += -include $(NDKBASE)/nlmconv/genlm.h +endif +endif + +NDK_ROOT = $(NDKBASE)/ndk +SDK_CLIB = $(NDK_ROOT)/nwsdk +SDK_LIBC = $(NDK_ROOT)/libc + +ifeq ($(LIBARCH),LIBC) + INCLUDES += -I$(SDK_LIBC)/include + # INCLUDES += -I$(SDK_LIBC)/include/nks + # INCLUDES += -I$(SDK_LIBC)/include/winsock + CFLAGS += -D_POSIX_SOURCE +else + INCLUDES += -I$(SDK_CLIB)/include/nlm + # INCLUDES += -I$(SDK_CLIB)/include/nlm/obsolete + # INCLUDES += -I$(SDK_CLIB)/include +endif +ifeq ($(DB),CURLDEBUG) +INCLUDES += -I../include +endif +CFLAGS += -I. $(INCLUDES) + +ifeq ($(MTSAFE),YES) + XDCOPT = -n +endif +ifeq ($(MTSAFE),NO) + XDCOPT = -u +endif + +ifeq ($(findstring linux,$(OSTYPE)),linux) +DL = ' +#-include $(NDKBASE)/nlmconv/ncpfs.inc +endif + +# Makefile.inc provides the CSOURCES and HHEADERS defines +include Makefile.inc + +OBJLIB := $(patsubst %.c,$(OBJDIR)/%.o,$(strip $(CSOURCES))) +OBJEXE = $(OBJLIB) $(OBJDIR)/ares_getopt.o + +.PHONY: lib nlm prebuild dist install clean + +lib: prebuild $(LTARGET) + +nlm: prebuild $(TARGETS) + +prebuild: $(OBJDIR) ares_build.h $(OBJDIR)/version.inc ares_config.h + +install: $(INSTDIR) all + @$(CP) *.nlm $(INSTDIR) + @$(CP) ../CHANGES $(INSTDIR) + @$(CP) ../COPYING $(INSTDIR) + @$(CP) ../README $(INSTDIR) + @$(CP) ../RELEASE-NOTES $(INSTDIR) + +clean: + -$(RM) $(LTARGET) $(TARGETS) ares_config.h + -$(RM) -r $(OBJDIR) + -$(RM) -r arpa + +%.$(LIBEXT): $(OBJLIB) + @echo Creating $@ + @-$(RM) $@ + @$(AR) $(ARFLAGS) $@ $^ +ifdef RANLIB + @$(RANLIB) $@ +endif + +%.nlm: $(OBJDIR)/%.def $(OBJDIR)/%.o $(OBJDIR)/%.xdc $(OBJEXE) + @echo Linking $@ + @-$(RM) $@ + @$(LD) $(LDFLAGS) $< + +$(OBJDIR) $(INSTDIR): + @$(MKDIR) $@ + +$(OBJDIR)/%.o: %.c +# @echo Compiling $< + $(CC) $(CFLAGS) -c $< -o $@ + +$(OBJDIR)/version.inc: ares_version.h $(OBJDIR) + @echo Creating $@ + @$(AWK) -f get_ver.awk $< > $@ + +$(OBJDIR)/%.xdc: Makefile.netware + @echo Creating $@ + @$(MPKXDC) $(XDCOPT) $@ + +$(OBJDIR)/%.def: Makefile.netware + @echo Creating $@ + @echo $(DL)# DEF file for linking with $(LD)$(DL) > $@ + @echo $(DL)# Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)# All your changes will be lost!!$(DL) >> $@ + @echo $(DL)#$(DL) >> $@ + @echo $(DL)copyright "$(COPYR)"$(DL) >> $@ + @echo $(DL)description "$(DESCR)"$(DL) >> $@ + @echo $(DL)version $(VERSION)$(DL) >> $@ +ifdef NLMTYPE + @echo $(DL)type $(NLMTYPE)$(DL) >> $@ +endif +ifdef STACK + @echo $(DL)stack $(STACK)$(DL) >> $@ +endif +ifdef SCREEN + @echo $(DL)screenname "$(SCREEN)"$(DL) >> $@ +else + @echo $(DL)screenname "DEFAULT"$(DL) >> $@ +endif +ifeq ($(DB),DEBUG) + @echo $(DL)debug$(DL) >> $@ +endif + @echo $(DL)threadname "$^"$(DL) >> $@ +ifdef XDCOPT + @echo $(DL)xdcdata $(@:.def=.xdc)$(DL) >> $@ +endif +ifeq ($(LDRING),0) + @echo $(DL)flag_on 16$(DL) >> $@ +endif +ifeq ($(LDRING),3) + @echo $(DL)flag_on 512$(DL) >> $@ +endif +ifeq ($(LIBARCH),CLIB) + @echo $(DL)start _Prelude$(DL) >> $@ + @echo $(DL)exit _Stop$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/clib.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/threads.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/nlmlib.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_CLIB)/imports/socklib.imp$(DL) >> $@ + @echo $(DL)module clib$(DL) >> $@ +else + @echo $(DL)flag_on 64$(DL) >> $@ + @echo $(DL)pseudopreemption$(DL) >> $@ + @echo $(DL)start _LibCPrelude$(DL) >> $@ + @echo $(DL)exit _LibCPostlude$(DL) >> $@ + @echo $(DL)check _LibCCheckUnload$(DL) >> $@ + @echo $(DL)import @$(SDK_LIBC)/imports/libc.imp$(DL) >> $@ + @echo $(DL)import @$(SDK_LIBC)/imports/netware.imp$(DL) >> $@ + @echo $(DL)module libc$(DL) >> $@ +endif +ifdef MODULES + @echo $(DL)module $(MODULES)$(DL) >> $@ +endif +ifdef EXPORTS + @echo $(DL)export $(EXPORTS)$(DL) >> $@ +endif +ifdef IMPORTS + @echo $(DL)import $(IMPORTS)$(DL) >> $@ +endif +ifeq ($(LD),nlmconv) + @echo $(DL)input $(PRELUDE)$(DL) >> $@ + @echo $(DL)input $(OBJEXE)$(DL) >> $@ + @echo $(DL)input $(@:.def=.o)$(DL) >> $@ + @echo $(DL)output $(notdir $(@:.def=.nlm))$(DL) >> $@ +endif + +ares_config.h: Makefile.netware + @echo Creating $@ + @echo $(DL)/* $@ for NetWare target.$(DL) > $@ + @echo $(DL)** Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)** All your changes will be lost!!$(DL) >> $@ + @echo $(DL)*/$(DL) >> $@ + @echo $(DL)#ifndef NETWARE$(DL) >> $@ + @echo $(DL)#error This $(notdir $@) is created for NetWare platform!$(DL) >> $@ + @echo $(DL)#endif$(DL) >> $@ + @echo $(DL)#define VERSION "$(LIBCARES_VERSION_STR)"$(DL) >> $@ + @echo $(DL)#define PACKAGE_BUGREPORT "a suitable curl mailing list => http://curl.haxx.se/mail/"$(DL) >> $@ +ifeq ($(LIBARCH),CLIB) + @echo $(DL)#define OS "i586-pc-clib-NetWare"$(DL) >> $@ + @echo $(DL)#define HAVE_STRICMP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRNICMP 1$(DL) >> $@ + @echo $(DL)#define NETDB_USE_INTERNET 1$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG2 char *$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_RETV int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2 char$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG5 struct sockaddr$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG6 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_RETV int$(DL) >> $@ + @echo $(DL)#define SEND_QUAL_ARG2$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG2 char *$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG3 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_RETV int$(DL) >> $@ +else + @echo $(DL)#define OS "i586-pc-libc-NetWare"$(DL) >> $@ + @echo $(DL)#define HAVE_DLFCN_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_DLOPEN 1$(DL) >> $@ + @echo $(DL)#define HAVE_FTRUNCATE 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETTIMEOFDAY 1$(DL) >> $@ + @echo $(DL)#define HAVE_INTTYPES_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_LONGLONG 1$(DL) >> $@ + @echo $(DL)#define HAVE_STDINT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRCASECMP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRLCAT 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRLCPY 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRTOLL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_PARAM_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SELECT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_TERMIOS_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_AF_INET6 1$(DL) >> $@ + @echo $(DL)#define HAVE_PF_INET6 1$(DL) >> $@ + @echo $(DL)#define HAVE_FREEADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_IN6_ADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_SOCKADDR_IN6 1$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG2 void *$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECV_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2 void$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG5 struct sockaddr$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG6 size_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define RECVFROM_TYPE_ARG2_IS_VOID 1$(DL) >> $@ + @echo $(DL)#define SEND_QUAL_ARG2$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG1 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG2 void *$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG3 size_t$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_ARG4 int$(DL) >> $@ + @echo $(DL)#define SEND_TYPE_RETV ssize_t$(DL) >> $@ + @echo $(DL)#define SIZEOF_STRUCT_IN6_ADDR 16$(DL) >> $@ +endif + @echo $(DL)#define HAVE_ARPA_INET_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_ASSERT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_ERR_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_FCNTL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTBYADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTBYNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETHOSTNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GETPROTOBYNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_GMTIME_R 1$(DL) >> $@ + @echo $(DL)#define HAVE_INET_ADDR 1$(DL) >> $@ + @echo $(DL)#define HAVE_IOCTL 1$(DL) >> $@ + @echo $(DL)#define HAVE_IOCTL_FIONBIO 1$(DL) >> $@ + @echo $(DL)#define HAVE_LIMITS_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_LL 1$(DL) >> $@ + @echo $(DL)#define HAVE_LOCALTIME_R 1$(DL) >> $@ + @echo $(DL)#define HAVE_MALLOC_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_NETINET_IN_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_RECV 1$(DL) >> $@ + @echo $(DL)#define HAVE_RECVFROM 1$(DL) >> $@ + @echo $(DL)#define HAVE_SELECT 1$(DL) >> $@ + @echo $(DL)#define HAVE_SEND 1$(DL) >> $@ + @echo $(DL)#define HAVE_SETJMP_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIGNAL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIGNAL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SIG_ATOMIC_T 1$(DL) >> $@ + @echo $(DL)#define HAVE_SOCKET 1$(DL) >> $@ + @echo $(DL)#define HAVE_STDLIB_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRDUP 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRFTIME 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRING_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRSTR 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_ADDRINFO 1$(DL) >> $@ + @echo $(DL)#define HAVE_STRUCT_TIMEVAL 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_IOCTL_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_STAT_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_TIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_TIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_UNAME 1$(DL) >> $@ + @echo $(DL)#define HAVE_UNISTD_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_UTIME 1$(DL) >> $@ + @echo $(DL)#define HAVE_UTIME_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_WRITEV 1$(DL) >> $@ + @echo $(DL)#define RETSIGTYPE void$(DL) >> $@ + @echo $(DL)#define SIZEOF_STRUCT_IN_ADDR 4$(DL) >> $@ + @echo $(DL)#define STDC_HEADERS 1$(DL) >> $@ + @echo $(DL)#define TIME_WITH_SYS_TIME 1$(DL) >> $@ +ifdef NW_WINSOCK + @echo $(DL)#define HAVE_CLOSESOCKET 1$(DL) >> $@ +else + @echo $(DL)#define HAVE_SYS_TYPES_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SOCKET_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_SYS_SOCKIO_H 1$(DL) >> $@ + @echo $(DL)#define HAVE_NETDB_H 1$(DL) >> $@ +endif + @echo $(DL)#ifdef __GNUC__$(DL) >> $@ + @echo $(DL)#define HAVE_VARIADIC_MACROS_GCC 1$(DL) >> $@ + @echo $(DL)#else$(DL) >> $@ + @echo $(DL)#define HAVE_VARIADIC_MACROS_C99 1$(DL) >> $@ + @echo $(DL)#endif$(DL) >> $@ + +FORCE: ; + +ares_build.h: Makefile.netware FORCE + @echo Creating $@ + @echo $(DL)/* $@ intended for NetWare target.$(DL) > $@ + @echo $(DL)** Do not edit this file - it is created by make!$(DL) >> $@ + @echo $(DL)** All your changes will be lost!!$(DL) >> $@ + @echo $(DL)*/$(DL) >> $@ + @echo $(DL)#ifndef __CARES_BUILD_H$(DL) >> $@ + @echo $(DL)#define __CARES_BUILD_H$(DL) >> $@ +ifeq ($(LIBARCH),CLIB) + @echo $(DL)#define CARES_TYPEOF_ARES_SOCKLEN_T int$(DL) >> $@ + @echo $(DL)#define CARES_SIZEOF_ARES_SOCKLEN_T 4$(DL) >> $@ +else + @echo $(DL)#define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int$(DL) >> $@ + @echo $(DL)#define CARES_SIZEOF_ARES_SOCKLEN_T 4$(DL) >> $@ +endif + @echo $(DL)#define CARES_SIZEOF_LONG 4$(DL) >> $@ + @echo $(DL)typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t;$(DL) >> $@ + @echo $(DL)#endif /* __CARES_BUILD_H */$(DL) >> $@ @@ -0,0 +1,21 @@ +Major changes since: +* see the CHANGES file + +Major changes in release 1.1.1: +* ares should now compile as C++ code (no longer uses reserved word + "class"). +* Added SRV support to adig test program. +* Fixed a few error handling bugs in query processing. + +Major changes in release 1.1.0: +* Added ares_free_string() function so that memory can be freed in the + same layer as it is allocated, a desirable feature in some + environments. +* A few of the ares_dns.h macros are fixed to use the proper bitwise + operator. +* Fixed a couple of fenceposts fixed in ares_expand_name()'s + bounds-checking. +* In process_timeouts(), extract query->next before calling + next_server() and possibly freeing the query structure. +* Casted arguments to ctype macros casted to unsigned char, since not + all char values are valid inputs to those macros according to ANSI. @@ -0,0 +1,46 @@ +This is c-ares, a forked version of the original ares. The original ares +README follows below, the c-ares specific details are in README.cares + +==================================================================== + +This is ares, an asynchronous resolver library. It is intended for +applications which need to perform DNS queries without blocking, or +need to perform multiple DNS queries in parallel. The primary +examples of such applications are servers which communicate with +multiple clients and programs with graphical user interfaces. + +This library implementation is not especially portable to crufty old +systems like SunOS 4. It assumes a compiler which can handle ANSI C +syntax, a system malloc which properly handles realloc(NULL, foo) and +free(NULL), and a reasonably up-to-date <arpa/nameser.h>. + +I have attempted to preserve the externally visible behavior of the +BIND resolver in nearly all respects. The API of the library is, of +course, very different from the synchronous BIND API; instead of +invoking a function like res_send() and getting a return value back +indicating the number of bytes in the response, you invoke a function +like ares_send() and give it a callback function to invoke when the +response arrives. You then have to select() on the file descriptors +indicated by ares_fds(), with a timeout given by ares_timeout(). You +call ares_process() when select() returns. + +Some features are missing from the current version of ares, relative +to the BIND resolver: + + * There is no IPV6 support. [not true for c-ares] + * There is no hostname verification. + * There is no logging of unexpected events. + * There is no debugging-oriented logging. + * There is no YP support. + +libares requires an ANSI compiler to compile and use. To build the +library, just run "./configure" and "make". To install it, run "make +install". Run "./configure --help" to see a list of options you can +provide to configure to change how the library builds. libares has no +data files, so you can move the include file and library around freely +without leaving behind any dependencies on old paths. Building the +library will also build the "adig" program, a little toy for trying +out the library. It doesn't get installed. + +libares is distributed at athena-dist.mit.edu:pub/ATHENA/ares. Please +send bug reports and comments to ghudson@mit.edu. diff --git a/README.cares b/README.cares new file mode 100644 index 0000000..fd37461 --- /dev/null +++ b/README.cares @@ -0,0 +1,63 @@ +c-ares +====== + +This package is based on ares 1.1.1 (written by Greg Hudson). I decided to +fork and release a separate project since the ares author didn't want the +improvements that were vital for our use of it. + +This package is dubbed 'c-ares' since I (Daniel Stenberg) wanted this for use +within the curl project (hence the letter C) and it makes a nice pun. Also, +c-ares is not API compatible with ares: a new name makes that more obvious to +the public. + +The full source code is available in the 'c-ares' release archives, and in the +'ares' subdir of the curl CVS source repository. + +If you find bugs, correct flaws, have questions or have comments in general in +regard to c-ares (or by all means the original ares too), get in touch with us +on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares + +c-ares is of course distributed under the same MIT-style license as the +original ares. + +You'll find all c-ares details and news here: + + http://c-ares.haxx.se/ + + +NOTES FOR C-ARES HACKERS + +The following notes apply to c-ares version 1.7.0 and later. + +* The distributed ares_build.h file is only intended to be used on systems + which can not run the also distributed configure script. + +* The distributed ares_build.h file is generated as a copy of ares_build.h.dist + when the c-ares source code distribution archive file is originally created. + +* If you check out from CVS on a non-configure platform, you must run the + appropriate buildconf* script to set up ares_build.h and other local files + before being able of compiling the library. + +* On systems capable of running the configure script, the configure process + will overwrite the distributed ares_build.h file with one that is suitable + and specific to the library being configured and built, this new file is + generated from the ares_build.h.in template file. + +* If you intend to distribute an already compiled c-ares library you _MUST_ + also distribute along with it the generated ares_build.h which has been + used to compile it. Otherwise the library will be of no use for the users of + the library that you have built. It is _your_ responsability to provide this + file. No one at the c-ares project can know how you have built the library. + +* File ares_build.h includes platform and configuration dependent info, + and must not be modified by anyone. Configure script generates it for you. + +* We cannot assume anything else but very basic compiler features being + present. While c-ares requires an ANSI C compiler to build, some of the + earlier ANSI compilers clearly can't deal with some preprocessor operators. + +* Newlines must remain unix-style for older compilers' sake. + +* Comments must be written in the old-style /* unnested C-fashion */ + diff --git a/README.msvc b/README.msvc new file mode 100644 index 0000000..18974cd --- /dev/null +++ b/README.msvc @@ -0,0 +1,119 @@ + $Id: README.msvc,v 1.2 2009-11-24 09:48:32 yangtse Exp $ + + + ___ __ _ _ __ ___ ___ + / __| ___ / _` | '__/ _ \/ __| + | (_ |___| (_| | | | __/\__ \ + \___| \__,_|_| \___||___/ + + + How to build c-ares using MSVC or Visual Studio + ================================================= + + + + How to build using MSVC from the command line + --------------------------------------------- + + Open a command prompt window and ensure that the environment is properly + set up in order to use MSVC or Visual Studio compiler tools. + + Change to c-ares source folder where Makefile.msvc file is located and run: + + > nmake -f Makefile.msvc + + This will build all c-ares libraries as well as three sample programs. + + Once the above command has finished a new folder named MSVCXX will exist + below the folder where makefile.msvc is found. The name of the folder + depends on the MSVC compiler version being used to build c-ares. + + Below the MSVCXX folder there will exist four folders named 'cares', + 'ahost', 'acountry', and 'adig'. The 'cares' folder is the one that + holds the c-ares libraries you have just generated, the other three + hold sample programs that use the libraries. + + The above command builds four versions of the c-ares library, dynamic + and static versions and each one in release and debug flavours. Each + of these is found in folders named dll-release, dll-debug, lib-release, + and lib-debug, which hang from the 'cares' folder mentioned above. Each + sample program also has folders with the same names to reflect which + library version it is using. + + + How to build using Visual Studio 6 IDE + -------------------------------------- + + A VC++ 6.0 reference workspace (vc6aws.dsw) is available within the 'vc' + folder to allow proper building of the library and sample programs. + + 1) Open the vc6aws.dsw workspace with MSVC6's IDE. + 2) Select 'Build' from top menu. + 3) Select 'Batch Build' from dropdown menu. + 4) Make sure that the sixteen project configurations are 'checked'. + 5) Click on the 'Build' button. + 6) Once the sixteen project configurations are built you are done. + + Dynamic and static c-ares libraries are built in debug and release flavours, + and can be located each one in its own subdirectory, dll-debug, dll-release, + lib-debug and lib-release, all of them below the 'vc\cares' subdirectory. + + In the same way four executable versions of each sample program are built, + each using its respective library. The resulting sample executables are + located in its own subdirectory, dll-debug, dll-release, lib-debug and + lib-release, below the 'vc\acountry', 'vc\adig' and 'vc\ahost'folders. + + These reference VC++ 6.0 configurations are generated using the dynamic CRT. + + + How to build using Visual Studio 2003 or newer IDE + -------------------------------------------------- + + First you have to convert the VC++ 6.0 reference workspace and project files + to the Visual Studio IDE version you are using, following next steps: + + 1) Open vc\vc6aws.dsw with VS20XX. + 2) Allow VS20XX to update all projects and workspaces. + 3) Save ALL and close VS20XX. + 4) Open vc\vc6aws.sln with VS20XX. + 5) Select batch build, check 'all' projects and click 'build' button. + + Same comments relative to generated files and folders as done above for + Visual Studio 6 IDE apply here. + + + Relationship between c-ares library file names and versions + ----------------------------------------------------------- + + c-ares static release library version files: + + libcares.lib -> static release library + + c-ares static debug library version files: + + libcaresd.lib -> static debug library + + c-ares dynamic release library version files: + + cares.dll -> dynamic release library + cares.lib -> import library for the dynamic release library + cares.exp -> export file for the dynamic release library + + c-ares dynamic debug library version files: + + caresd.dll -> dynamic debug library + caresd.lib -> import library for the dynamic debug library + caresd.exp -> export file for the dynamic debug library + caresd.pdb -> debug symbol file for the dynamic debug library + + + How to use c-ares static libraries + ---------------------------------- + + When using the c-ares static library in your program, you will have to + define preprocessor symbol CARES_STATICLIB while building your program, + otherwise you will get errors at linkage stage. + + +Have Fun! + diff --git a/RELEASE-NOTES b/RELEASE-NOTES new file mode 100644 index 0000000..a444c2c --- /dev/null +++ b/RELEASE-NOTES @@ -0,0 +1,16 @@ +This is what's new and changed in the c-ares 1.7.1 release: + +Changed: + + o + +Fixed: + + o closing of sockets on Windows systems + o MSVC deprecated compiler options warnings + +Thanks go to these friendly people for their efforts and contributions: + + Ingmar Runge, Laszlo Tamas Szabo + +Have fun! @@ -0,0 +1,18 @@ +TODO +==== + +ares_gethostbyname + +- When built to support IPv6, it needs to also support PF_UNSPEC or similar, + so that an application can ask for any protocol and then c-ares would return + all known resolves and not just explicitly IPv4 _or_ IPv6 resolves. + +ares_process + +- Upon next ABI breakage ares_process() should be changed to return 'int' + and return ARES_ENOTINITIALIZED if ares_library_init() has not been called. + +ares_process_fd + +- Upon next ABI breakage ares_process_fd() should be changed to return + 'int' and return ARES_ENOTINITIALIZED if library has not been initialized. diff --git a/acinclude.m4 b/acinclude.m4 new file mode 100644 index 0000000..336dfab --- /dev/null +++ b/acinclude.m4 @@ -0,0 +1,1925 @@ + + +dnl CURL_CHECK_DEF (SYMBOL, [INCLUDES], [SILENT]) +dnl ------------------------------------------------- +dnl Use the C preprocessor to find out if the given object-style symbol +dnl is defined and get its expansion. This macro will not use default +dnl includes even if no INCLUDES argument is given. This macro will run +dnl silently when invoked with three arguments. If the expansion would +dnl result in a set of double-quoted strings the returned expansion will +dnl actually be a single double-quoted string concatenating all them. + +AC_DEFUN([CURL_CHECK_DEF], [ + AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl + AS_VAR_PUSHDEF([ac_Def], [curl_cv_def_$1])dnl + if test -z "$SED"; then + AC_MSG_ERROR([SED not set. Cannot continue without SED being set.]) + fi + if test -z "$GREP"; then + AC_MSG_ERROR([GREP not set. Cannot continue without GREP being set.]) + fi + ifelse($3,,[AC_MSG_CHECKING([for preprocessor definition of $1])]) + tmp_exp="" + AC_PREPROC_IFELSE([ + AC_LANG_SOURCE( +ifelse($2,,,[$2])[[ +#ifdef $1 +CURL_DEF_TOKEN $1 +#endif + ]]) + ],[ + tmp_exp=`eval "$ac_cpp conftest.$ac_ext" 2>/dev/null | \ + "$GREP" CURL_DEF_TOKEN 2>/dev/null | \ + "$SED" 's/.*CURL_DEF_TOKEN[[ ]]//' 2>/dev/null | \ + "$SED" 's/[["]][[ ]]*[["]]//g' 2>/dev/null` + if test -z "$tmp_exp" || test "$tmp_exp" = "$1"; then + tmp_exp="" + fi + ]) + if test -z "$tmp_exp"; then + AS_VAR_SET(ac_HaveDef, no) + ifelse($3,,[AC_MSG_RESULT([no])]) + else + AS_VAR_SET(ac_HaveDef, yes) + AS_VAR_SET(ac_Def, $tmp_exp) + ifelse($3,,[AC_MSG_RESULT([$tmp_exp])]) + fi + AS_VAR_POPDEF([ac_Def])dnl + AS_VAR_POPDEF([ac_HaveDef])dnl +]) + + +dnl CURL_CHECK_DEF_CC (SYMBOL, [INCLUDES], [SILENT]) +dnl ------------------------------------------------- +dnl Use the C compiler to find out only if the given symbol is defined +dnl or not, this can not find out its expansion. This macro will not use +dnl default includes even if no INCLUDES argument is given. This macro +dnl will run silently when invoked with three arguments. + +AC_DEFUN([CURL_CHECK_DEF_CC], [ + AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl + ifelse($3,,[AC_MSG_CHECKING([for compiler definition of $1])]) + AC_COMPILE_IFELSE([ + AC_LANG_SOURCE( +ifelse($2,,,[$2])[[ +int main (void) +{ +#ifdef $1 + return 0; +#else + force compilation error +#endif +} + ]]) + ],[ + tst_symbol_defined="yes" + ],[ + tst_symbol_defined="no" + ]) + if test "$tst_symbol_defined" = "yes"; then + AS_VAR_SET(ac_HaveDef, yes) + ifelse($3,,[AC_MSG_RESULT([yes])]) + else + AS_VAR_SET(ac_HaveDef, no) + ifelse($3,,[AC_MSG_RESULT([no])]) + fi + AS_VAR_POPDEF([ac_HaveDef])dnl +]) + + +dnl CARES_CHECK_LIB_XNET +dnl ------------------------------------------------- +dnl Verify if X/Open network library is required. + +AC_DEFUN([CARES_CHECK_LIB_XNET], [ + AC_MSG_CHECKING([if X/Open network library is required]) + tst_lib_xnet_required="no" + AC_COMPILE_IFELSE([ + AC_LANG_SOURCE([[ +int main (void) +{ +#if defined(__hpux) && defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 600) + return 0; +#elif defined(__hpux) && defined(_XOPEN_SOURCE_EXTENDED) + return 0; +#else + force compilation error +#endif +} + ]]) + ],[ + tst_lib_xnet_required="yes" + LIBS="$LIBS -lxnet" + ]) + AC_MSG_RESULT([$tst_lib_xnet_required]) +]) + + +dnl CARES_CHECK_AIX_ALL_SOURCE +dnl ------------------------------------------------- +dnl Provides a replacement of traditional AC_AIX with +dnl an uniform behaviour across all autoconf versions, +dnl and with our own placement rules. + +AC_DEFUN([CARES_CHECK_AIX_ALL_SOURCE], [ + AH_VERBATIM([_ALL_SOURCE], + [/* Define to 1 if OS is AIX. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif]) + AC_BEFORE([$0], [AC_SYS_LARGEFILE])dnl + AC_BEFORE([$0], [CARES_CONFIGURE_REENTRANT])dnl + AC_MSG_CHECKING([if OS is AIX (to define _ALL_SOURCE)]) + AC_EGREP_CPP([yes_this_is_aix],[ +#ifdef _AIX + yes_this_is_aix +#endif + ],[ + AC_MSG_RESULT([yes]) + AC_DEFINE(_ALL_SOURCE) + ],[ + AC_MSG_RESULT([no]) + ]) +]) + + +dnl CURL_CHECK_HEADER_WINDOWS +dnl ------------------------------------------------- +dnl Check for compilable and valid windows.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINDOWS], [ + AC_CACHE_CHECK([for windows.h], [ac_cv_header_windows_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) + HAVE_WINDOWS_H shall not be defined. +#else + int dummy=2*WINVER; +#endif + ]]) + ],[ + ac_cv_header_windows_h="yes" + ],[ + ac_cv_header_windows_h="no" + ]) + ]) + case "$ac_cv_header_windows_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINDOWS_H, 1, + [Define to 1 if you have the windows.h header file.]) + AC_DEFINE_UNQUOTED(WIN32_LEAN_AND_MEAN, 1, + [Define to avoid automatic inclusion of winsock.h]) + ;; + esac +]) + + +dnl CURL_CHECK_NATIVE_WINDOWS +dnl ------------------------------------------------- +dnl Check if building a native Windows target + +AC_DEFUN([CURL_CHECK_NATIVE_WINDOWS], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([whether build target is a native Windows one], [ac_cv_native_windows], [ + if test "$ac_cv_header_windows_h" = "no"; then + ac_cv_native_windows="no" + else + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ +#if defined(__MINGW32__) || defined(__MINGW32CE__) || \ + (defined(_MSC_VER) && (defined(_WIN32) || defined(_WIN64))) + int dummy=1; +#else + Not a native Windows build target. +#endif + ]]) + ],[ + ac_cv_native_windows="yes" + ],[ + ac_cv_native_windows="no" + ]) + fi + ]) + case "$ac_cv_native_windows" in + yes) + AC_DEFINE_UNQUOTED(NATIVE_WINDOWS, 1, + [Define to 1 if you are building a native Windows target.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WINSOCK +dnl ------------------------------------------------- +dnl Check for compilable and valid winsock.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINSOCK], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([for winsock.h], [ac_cv_header_winsock_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) + HAVE_WINSOCK_H shall not be defined. +#else + int dummy=WSACleanup(); +#endif + ]]) + ],[ + ac_cv_header_winsock_h="yes" + ],[ + ac_cv_header_winsock_h="no" + ]) + ]) + case "$ac_cv_header_winsock_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINSOCK_H, 1, + [Define to 1 if you have the winsock.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WINSOCK2 +dnl ------------------------------------------------- +dnl Check for compilable and valid winsock2.h header + +AC_DEFUN([CURL_CHECK_HEADER_WINSOCK2], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINDOWS])dnl + AC_CACHE_CHECK([for winsock2.h], [ac_cv_header_winsock2_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock2.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) || defined(__MINGW32CE__) + HAVE_WINSOCK2_H shall not be defined. +#else + int dummy=2*IPPROTO_ESP; +#endif + ]]) + ],[ + ac_cv_header_winsock2_h="yes" + ],[ + ac_cv_header_winsock2_h="no" + ]) + ]) + case "$ac_cv_header_winsock2_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WINSOCK2_H, 1, + [Define to 1 if you have the winsock2.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_WS2TCPIP +dnl ------------------------------------------------- +dnl Check for compilable and valid ws2tcpip.h header + +AC_DEFUN([CURL_CHECK_HEADER_WS2TCPIP], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CACHE_CHECK([for ws2tcpip.h], [ac_cv_header_ws2tcpip_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#include <winsock2.h> +#include <ws2tcpip.h> + ]],[[ +#if defined(__CYGWIN__) || defined(__CEGCC__) || defined(__MINGW32CE__) + HAVE_WS2TCPIP_H shall not be defined. +#else + int dummy=2*IP_PKTINFO; +#endif + ]]) + ],[ + ac_cv_header_ws2tcpip_h="yes" + ],[ + ac_cv_header_ws2tcpip_h="no" + ]) + ]) + case "$ac_cv_header_ws2tcpip_h" in + yes) + AC_DEFINE_UNQUOTED(HAVE_WS2TCPIP_H, 1, + [Define to 1 if you have the ws2tcpip.h header file.]) + ;; + esac +]) + + +dnl CURL_CHECK_HEADER_MALLOC +dnl ------------------------------------------------- +dnl Check for compilable and valid malloc.h header, +dnl and check if it is needed even with stdlib.h + +AC_DEFUN([CURL_CHECK_HEADER_MALLOC], [ + AC_CACHE_CHECK([for malloc.h], [ac_cv_header_malloc_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <malloc.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + ac_cv_header_malloc_h="yes" + ],[ + ac_cv_header_malloc_h="no" + ]) + ]) + if test "$ac_cv_header_malloc_h" = "yes"; then + AC_DEFINE_UNQUOTED(HAVE_MALLOC_H, 1, + [Define to 1 if you have the malloc.h header file.]) + # + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <stdlib.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + curl_cv_need_header_malloc_h="no" + ],[ + curl_cv_need_header_malloc_h="yes" + ]) + # + case "$curl_cv_need_header_malloc_h" in + yes) + AC_DEFINE_UNQUOTED(NEED_MALLOC_H, 1, + [Define to 1 if you need the malloc.h header file even with stdlib.h]) + ;; + esac + fi +]) + + +dnl CURL_CHECK_HEADER_MEMORY +dnl ------------------------------------------------- +dnl Check for compilable and valid memory.h header, +dnl and check if it is needed even with stdlib.h for +dnl memory related functions. + +AC_DEFUN([CURL_CHECK_HEADER_MEMORY], [ + AC_CACHE_CHECK([for memory.h], [ac_cv_header_memory_h], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <memory.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + ac_cv_header_memory_h="yes" + ],[ + ac_cv_header_memory_h="no" + ]) + ]) + if test "$ac_cv_header_memory_h" = "yes"; then + AC_DEFINE_UNQUOTED(HAVE_MEMORY_H, 1, + [Define to 1 if you have the memory.h header file.]) + # + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <stdlib.h> + ]],[[ + void *p = malloc(10); + void *q = calloc(10,10); + free(p); + free(q); + ]]) + ],[ + curl_cv_need_header_memory_h="no" + ],[ + curl_cv_need_header_memory_h="yes" + ]) + # + case "$curl_cv_need_header_memory_h" in + yes) + AC_DEFINE_UNQUOTED(NEED_MEMORY_H, 1, + [Define to 1 if you need the memory.h header file even with stdlib.h]) + ;; + esac + fi +]) + + +dnl CURL_CHECK_FUNC_GETNAMEINFO +dnl ------------------------------------------------- +dnl Test if the getnameinfo function is available, +dnl and check the types of five of its arguments. +dnl If the function succeeds HAVE_GETNAMEINFO will be +dnl defined, defining the types of the arguments in +dnl GETNAMEINFO_TYPE_ARG1, GETNAMEINFO_TYPE_ARG2, +dnl GETNAMEINFO_TYPE_ARG46 and GETNAMEINFO_TYPE_ARG7, +dnl and also defining the type qualifier of first +dnl argument in GETNAMEINFO_QUAL_ARG1. + +AC_DEFUN([CURL_CHECK_FUNC_GETNAMEINFO], [ + AC_REQUIRE([CURL_CHECK_HEADER_WS2TCPIP])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h netdb.h) + # + AC_MSG_CHECKING([for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([getnameinfo]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_getnameinfo="no" + ]) + # + if test "$curl_cv_getnameinfo" != "yes"; then + AC_MSG_CHECKING([deeper for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + getnameinfo(); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([but still no]) + curl_cv_getnameinfo="no" + ]) + fi + # + if test "$curl_cv_getnameinfo" != "yes"; then + AC_MSG_CHECKING([deeper and deeper for getnameinfo]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#endif + ]],[[ + getnameinfo(0, 0, 0, 0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_getnameinfo="yes" + ],[ + AC_MSG_RESULT([but still no]) + curl_cv_getnameinfo="no" + ]) + fi + # + if test "$curl_cv_getnameinfo" = "yes"; then + AC_CACHE_CHECK([types of arguments for getnameinfo], + [curl_cv_func_getnameinfo_args], [ + curl_cv_func_getnameinfo_args="unknown" + for gni_arg1 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do + for gni_arg2 in 'socklen_t' 'size_t' 'int'; do + for gni_arg46 in 'size_t' 'int' 'socklen_t' 'unsigned int' 'DWORD'; do + for gni_arg7 in 'int' 'unsigned int'; do + if test "$curl_cv_func_getnameinfo_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#if (!defined(_WIN32_WINNT)) || (_WIN32_WINNT < 0x0501) +#undef _WIN32_WINNT +#define _WIN32_WINNT 0x0501 +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#define GNICALLCONV WSAAPI +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#define GNICALLCONV +#endif + extern int GNICALLCONV getnameinfo($gni_arg1, $gni_arg2, + char *, $gni_arg46, + char *, $gni_arg46, + $gni_arg7); + ]],[[ + $gni_arg2 salen=0; + $gni_arg46 hostlen=0; + $gni_arg46 servlen=0; + $gni_arg7 flags=0; + int res = getnameinfo(0, salen, 0, hostlen, 0, servlen, flags); + ]]) + ],[ + curl_cv_func_getnameinfo_args="$gni_arg1,$gni_arg2,$gni_arg46,$gni_arg7" + ]) + fi + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_getnameinfo_args" = "unknown"; then + AC_MSG_WARN([Cannot find proper types to use for getnameinfo args]) + AC_MSG_WARN([HAVE_GETNAMEINFO will not be defined]) + else + gni_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_getnameinfo_args" | sed 's/\*/\*/g'` + IFS=$gni_prev_IFS + shift + # + gni_qual_type_arg1=$[1] + # + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG2, $[2], + [Define to the type of arg 2 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG46, $[3], + [Define to the type of args 4 and 6 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG7, $[4], + [Define to the type of arg 7 for getnameinfo.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + case "$gni_qual_type_arg1" in + const*) + gni_qual_arg1=const + gni_type_arg1=`echo $gni_qual_type_arg1 | sed 's/^const //'` + ;; + *) + gni_qual_arg1= + gni_type_arg1=$gni_qual_type_arg1 + ;; + esac + # + AC_DEFINE_UNQUOTED(GETNAMEINFO_QUAL_ARG1, $gni_qual_arg1, + [Define to the type qualifier of arg 1 for getnameinfo.]) + AC_DEFINE_UNQUOTED(GETNAMEINFO_TYPE_ARG1, $gni_type_arg1, + [Define to the type of arg 1 for getnameinfo.]) + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_GETNAMEINFO, 1, + [Define to 1 if you have the getnameinfo function.]) + ac_cv_func_getnameinfo="yes" + fi + fi +]) + + +dnl TYPE_SOCKADDR_STORAGE +dnl ------------------------------------------------- +dnl Check for struct sockaddr_storage. Most IPv6-enabled +dnl hosts have it, but AIX 4.3 is one known exception. + +AC_DEFUN([TYPE_SOCKADDR_STORAGE], +[ + AC_CHECK_TYPE([struct sockaddr_storage], + AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE, 1, + [if struct sockaddr_storage is defined]), , + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]) +]) + + +dnl CURL_CHECK_NI_WITHSCOPEID +dnl ------------------------------------------------- +dnl Check for working NI_WITHSCOPEID in getnameinfo() + +AC_DEFUN([CURL_CHECK_NI_WITHSCOPEID], [ + AC_REQUIRE([CURL_CHECK_FUNC_GETNAMEINFO])dnl + AC_REQUIRE([TYPE_SOCKADDR_STORAGE])dnl + AC_CHECK_HEADERS(stdio.h sys/types.h sys/socket.h \ + netdb.h netinet/in.h arpa/inet.h) + # + AC_CACHE_CHECK([for working NI_WITHSCOPEID], + [ac_cv_working_ni_withscopeid], [ + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STDIO_H +#include <stdio.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif + ]],[[ +#if defined(NI_WITHSCOPEID) && defined(HAVE_GETNAMEINFO) +#ifdef HAVE_STRUCT_SOCKADDR_STORAGE + struct sockaddr_storage sa; +#else + unsigned char sa[256]; +#endif + char hostbuf[NI_MAXHOST]; + int rc; + GETNAMEINFO_TYPE_ARG2 salen = (GETNAMEINFO_TYPE_ARG2)sizeof(sa); + GETNAMEINFO_TYPE_ARG46 hostlen = (GETNAMEINFO_TYPE_ARG46)sizeof(hostbuf); + GETNAMEINFO_TYPE_ARG7 flags = NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID; + int fd = socket(AF_INET6, SOCK_STREAM, 0); + if(fd < 0) { + perror("socket()"); + return 1; /* Error creating socket */ + } + rc = getsockname(fd, (GETNAMEINFO_TYPE_ARG1)&sa, &salen); + if(rc) { + perror("getsockname()"); + return 2; /* Error retrieving socket name */ + } + rc = getnameinfo((GETNAMEINFO_TYPE_ARG1)&sa, salen, hostbuf, hostlen, NULL, 0, flags); + if(rc) { + printf("rc = %s\n", gai_strerror(rc)); + return 3; /* Error translating socket address */ + } + return 0; /* Ok, NI_WITHSCOPEID works */ +#else + return 4; /* Error, NI_WITHSCOPEID not defined or no getnameinfo() */ +#endif + ]]) # AC-LANG-PROGRAM + ],[ + # Exit code == 0. Program worked. + ac_cv_working_ni_withscopeid="yes" + ],[ + # Exit code != 0. Program failed. + ac_cv_working_ni_withscopeid="no" + ],[ + # Program is not run when cross-compiling. So we assume + # NI_WITHSCOPEID will work if we are able to compile it. + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> + ]],[[ + unsigned int dummy= NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID; + ]]) + ],[ + ac_cv_working_ni_withscopeid="yes" + ],[ + ac_cv_working_ni_withscopeid="no" + ]) # AC-COMPILE-IFELSE + ]) # AC-RUN-IFELSE + ]) # AC-CACHE-CHECK + case "$ac_cv_working_ni_withscopeid" in + yes) + AC_DEFINE(HAVE_NI_WITHSCOPEID, 1, + [Define to 1 if NI_WITHSCOPEID exists and works.]) + ;; + esac +]) + + +dnl CURL_CHECK_FUNC_RECV +dnl ------------------------------------------------- +dnl Test if the socket recv() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_RECV +dnl will be defined, defining the types of the arguments +dnl in RECV_TYPE_ARG1, RECV_TYPE_ARG2, RECV_TYPE_ARG3 +dnl and RECV_TYPE_ARG4, defining the type of the function +dnl return value in RECV_TYPE_RETV. + +AC_DEFUN([CURL_CHECK_FUNC_RECV], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for recv]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + recv(0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_recv="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_recv="no" + ]) + # + if test "$curl_cv_recv" = "yes"; then + AC_CACHE_CHECK([types of args and return type for recv], + [curl_cv_func_recv_args], [ + curl_cv_func_recv_args="unknown" + for recv_retv in 'int' 'ssize_t'; do + for recv_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for recv_arg2 in 'char *' 'void *'; do + for recv_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for recv_arg4 in 'int' 'unsigned int'; do + if test "$curl_cv_func_recv_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define RECVCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define RECVCALLCONV +#endif + extern $recv_retv RECVCALLCONV + recv($recv_arg1, $recv_arg2, $recv_arg3, $recv_arg4); + ]],[[ + $recv_arg1 s=0; + $recv_arg2 buf=0; + $recv_arg3 len=0; + $recv_arg4 flags=0; + $recv_retv res = recv(s, buf, len, flags); + ]]) + ],[ + curl_cv_func_recv_args="$recv_arg1,$recv_arg2,$recv_arg3,$recv_arg4,$recv_retv" + ]) + fi + done + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_recv_args" = "unknown"; then + AC_MSG_ERROR([Cannot find proper types to use for recv args]) + else + recv_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_recv_args" | sed 's/\*/\*/g'` + IFS=$recv_prev_IFS + shift + # + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG1, $[1], + [Define to the type of arg 1 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG2, $[2], + [Define to the type of arg 2 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG3, $[3], + [Define to the type of arg 3 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_ARG4, $[4], + [Define to the type of arg 4 for recv.]) + AC_DEFINE_UNQUOTED(RECV_TYPE_RETV, $[5], + [Define to the function return type for recv.]) + # + AC_DEFINE_UNQUOTED(HAVE_RECV, 1, + [Define to 1 if you have the recv function.]) + ac_cv_func_recv="yes" + fi + else + AC_MSG_ERROR([Unable to link function recv]) + fi +]) + + +dnl CURL_CHECK_FUNC_SEND +dnl ------------------------------------------------- +dnl Test if the socket send() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_SEND +dnl will be defined, defining the types of the arguments +dnl in SEND_TYPE_ARG1, SEND_TYPE_ARG2, SEND_TYPE_ARG3 +dnl and SEND_TYPE_ARG4, defining the type of the function +dnl return value in SEND_TYPE_RETV, and also defining the +dnl type qualifier of second argument in SEND_QUAL_ARG2. + +AC_DEFUN([CURL_CHECK_FUNC_SEND], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for send]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + send(0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_send="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_send="no" + ]) + # + if test "$curl_cv_send" = "yes"; then + AC_CACHE_CHECK([types of args and return type for send], + [curl_cv_func_send_args], [ + curl_cv_func_send_args="unknown" + for send_retv in 'int' 'ssize_t'; do + for send_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for send_arg2 in 'char *' 'void *' 'const char *' 'const void *'; do + for send_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for send_arg4 in 'int' 'unsigned int'; do + if test "$curl_cv_func_send_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define SENDCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define SENDCALLCONV +#endif + extern $send_retv SENDCALLCONV + send($send_arg1, $send_arg2, $send_arg3, $send_arg4); + ]],[[ + $send_arg1 s=0; + $send_arg3 len=0; + $send_arg4 flags=0; + $send_retv res = send(s, 0, len, flags); + ]]) + ],[ + curl_cv_func_send_args="$send_arg1,$send_arg2,$send_arg3,$send_arg4,$send_retv" + ]) + fi + done + done + done + done + done + ]) # AC-CACHE-CHECK + if test "$curl_cv_func_send_args" = "unknown"; then + AC_MSG_ERROR([Cannot find proper types to use for send args]) + else + send_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_send_args" | sed 's/\*/\*/g'` + IFS=$send_prev_IFS + shift + # + send_qual_type_arg2=$[2] + # + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG1, $[1], + [Define to the type of arg 1 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG3, $[3], + [Define to the type of arg 3 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG4, $[4], + [Define to the type of arg 4 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_RETV, $[5], + [Define to the function return type for send.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + case "$send_qual_type_arg2" in + const*) + send_qual_arg2=const + send_type_arg2=`echo $send_qual_type_arg2 | sed 's/^const //'` + ;; + *) + send_qual_arg2= + send_type_arg2=$send_qual_type_arg2 + ;; + esac + # + AC_DEFINE_UNQUOTED(SEND_QUAL_ARG2, $send_qual_arg2, + [Define to the type qualifier of arg 2 for send.]) + AC_DEFINE_UNQUOTED(SEND_TYPE_ARG2, $send_type_arg2, + [Define to the type of arg 2 for send.]) + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_SEND, 1, + [Define to 1 if you have the send function.]) + ac_cv_func_send="yes" + fi + else + AC_MSG_ERROR([Unable to link function send]) + fi +]) + + +dnl CURL_CHECK_FUNC_RECVFROM +dnl ------------------------------------------------- +dnl Test if the socket recvfrom() function is available, +dnl and check its return type and the types of its +dnl arguments. If the function succeeds HAVE_RECVFROM +dnl will be defined, defining the types of the arguments +dnl in RECVFROM_TYPE_ARG1, RECVFROM_TYPE_ARG2, and so on +dnl to RECVFROM_TYPE_ARG6, defining also the type of the +dnl function return value in RECVFROM_TYPE_RETV. +dnl Notice that the types returned for pointer arguments +dnl will actually be the type pointed by the pointer. + +AC_DEFUN([CURL_CHECK_FUNC_RECVFROM], [ + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + # + AC_MSG_CHECKING([for recvfrom]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + recvfrom(0, 0, 0, 0, 0, 0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + curl_cv_recvfrom="yes" + ],[ + AC_MSG_RESULT([no]) + curl_cv_recvfrom="no" + ]) + # + if test "$curl_cv_recvfrom" = "yes"; then + AC_CACHE_CHECK([types of args and return type for recvfrom], + [curl_cv_func_recvfrom_args], [ + curl_cv_func_recvfrom_args="unknown" + for recvfrom_retv in 'int' 'ssize_t'; do + for recvfrom_arg1 in 'int' 'ssize_t' 'SOCKET'; do + for recvfrom_arg2 in 'char *' 'void *'; do + for recvfrom_arg3 in 'size_t' 'int' 'socklen_t' 'unsigned int'; do + for recvfrom_arg4 in 'int' 'unsigned int'; do + for recvfrom_arg5 in 'struct sockaddr *' 'void *'; do + for recvfrom_arg6 in 'socklen_t *' 'int *' 'unsigned int *' 'size_t *' 'void *'; do + if test "$curl_cv_func_recvfrom_args" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#define RECVFROMCALLCONV PASCAL +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#define RECVFROMCALLCONV +#endif + extern $recvfrom_retv RECVFROMCALLCONV + recvfrom($recvfrom_arg1, $recvfrom_arg2, + $recvfrom_arg3, $recvfrom_arg4, + $recvfrom_arg5, $recvfrom_arg6); + ]],[[ + $recvfrom_arg1 s=0; + $recvfrom_arg2 buf=0; + $recvfrom_arg3 len=0; + $recvfrom_arg4 flags=0; + $recvfrom_arg5 addr=0; + $recvfrom_arg6 addrlen=0; + $recvfrom_retv res=0; + res = recvfrom(s, buf, len, flags, addr, addrlen); + ]]) + ],[ + curl_cv_func_recvfrom_args="$recvfrom_arg1,$recvfrom_arg2,$recvfrom_arg3,$recvfrom_arg4,$recvfrom_arg5,$recvfrom_arg6,$recvfrom_retv" + ]) + fi + done + done + done + done + done + done + done + ]) # AC-CACHE-CHECK + # Nearly last minute change for this release starts here + AC_DEFINE_UNQUOTED(HAVE_RECVFROM, 1, + [Define to 1 if you have the recvfrom function.]) + ac_cv_func_recvfrom="yes" + # Nearly last minute change for this release ends here + if test "$curl_cv_func_recvfrom_args" = "unknown"; then + AC_MSG_WARN([Cannot find proper types to use for recvfrom args]) + else + recvfrom_prev_IFS=$IFS; IFS=',' + set dummy `echo "$curl_cv_func_recvfrom_args" | sed 's/\*/\*/g'` + IFS=$recvfrom_prev_IFS + shift + # + recvfrom_ptrt_arg2=$[2] + recvfrom_ptrt_arg5=$[5] + recvfrom_ptrt_arg6=$[6] + # + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG1, $[1], + [Define to the type of arg 1 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG3, $[3], + [Define to the type of arg 3 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG4, $[4], + [Define to the type of arg 4 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_RETV, $[7], + [Define to the function return type for recvfrom.]) + # + prev_sh_opts=$- + # + case $prev_sh_opts in + *f*) + ;; + *) + set -f + ;; + esac + # + recvfrom_type_arg2=`echo $recvfrom_ptrt_arg2 | sed 's/ \*//'` + recvfrom_type_arg5=`echo $recvfrom_ptrt_arg5 | sed 's/ \*//'` + recvfrom_type_arg6=`echo $recvfrom_ptrt_arg6 | sed 's/ \*//'` + # + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG2, $recvfrom_type_arg2, + [Define to the type pointed by arg 2 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG5, $recvfrom_type_arg5, + [Define to the type pointed by arg 5 for recvfrom.]) + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG6, $recvfrom_type_arg6, + [Define to the type pointed by arg 6 for recvfrom.]) + # + if test "$recvfrom_type_arg2" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG2_IS_VOID, 1, + [Define to 1 if the type pointed by arg 2 for recvfrom is void.]) + fi + if test "$recvfrom_type_arg5" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG5_IS_VOID, 1, + [Define to 1 if the type pointed by arg 5 for recvfrom is void.]) + fi + if test "$recvfrom_type_arg6" = "void"; then + AC_DEFINE_UNQUOTED(RECVFROM_TYPE_ARG6_IS_VOID, 1, + [Define to 1 if the type pointed by arg 6 for recvfrom is void.]) + fi + # + case $prev_sh_opts in + *f*) + ;; + *) + set +f + ;; + esac + # + AC_DEFINE_UNQUOTED(HAVE_RECVFROM, 1, + [Define to 1 if you have the recvfrom function.]) + ac_cv_func_recvfrom="yes" + fi + else + AC_MSG_WARN([Unable to link function recvfrom]) + AC_MSG_WARN([Your system will be vulnerable to some forms of DNS cache poisoning]) + fi +]) + + +dnl CURL_CHECK_MSG_NOSIGNAL +dnl ------------------------------------------------- +dnl Check for MSG_NOSIGNAL + +AC_DEFUN([CURL_CHECK_MSG_NOSIGNAL], [ + AC_CHECK_HEADERS(sys/types.h sys/socket.h) + AC_CACHE_CHECK([for MSG_NOSIGNAL], [ac_cv_msg_nosignal], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ]],[[ + int flag=MSG_NOSIGNAL; + ]]) + ],[ + ac_cv_msg_nosignal="yes" + ],[ + ac_cv_msg_nosignal="no" + ]) + ]) + case "$ac_cv_msg_nosignal" in + yes) + AC_DEFINE_UNQUOTED(HAVE_MSG_NOSIGNAL, 1, + [Define to 1 if you have the MSG_NOSIGNAL flag.]) + ;; + esac +]) + + +dnl CURL_CHECK_STRUCT_TIMEVAL +dnl ------------------------------------------------- +dnl Check for timeval struct + +AC_DEFUN([CURL_CHECK_STRUCT_TIMEVAL], [ + AC_REQUIRE([AC_HEADER_TIME])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK])dnl + AC_REQUIRE([CURL_CHECK_HEADER_WINSOCK2])dnl + AC_CHECK_HEADERS(sys/types.h sys/time.h time.h sys/socket.h) + AC_CACHE_CHECK([for struct timeval], [ac_cv_struct_timeval], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + ]],[[ + struct timeval ts; + ts.tv_sec = 0; + ts.tv_usec = 0; + ]]) + ],[ + ac_cv_struct_timeval="yes" + ],[ + ac_cv_struct_timeval="no" + ]) + ]) + case "$ac_cv_struct_timeval" in + yes) + AC_DEFINE_UNQUOTED(HAVE_STRUCT_TIMEVAL, 1, + [Define to 1 if you have the timeval struct.]) + ;; + esac +]) + + +dnl TYPE_SIG_ATOMIC_T +dnl ------------------------------------------------- +dnl Check if the sig_atomic_t type is available, and +dnl verify if it is already defined as volatile. + +AC_DEFUN([TYPE_SIG_ATOMIC_T], [ + AC_CHECK_HEADERS(signal.h) + AC_CHECK_TYPE([sig_atomic_t],[ + AC_DEFINE(HAVE_SIG_ATOMIC_T, 1, + [Define to 1 if sig_atomic_t is an available typedef.]) + ], ,[ +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + ]) + case "$ac_cv_type_sig_atomic_t" in + yes) + # + AC_MSG_CHECKING([if sig_atomic_t is already defined as volatile]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + ]],[[ + static volatile sig_atomic_t dummy = 0; + ]]) + ],[ + AC_MSG_RESULT([no]) + ac_cv_sig_atomic_t_volatile="no" + ],[ + AC_MSG_RESULT([yes]) + ac_cv_sig_atomic_t_volatile="yes" + ]) + # + if test "$ac_cv_sig_atomic_t_volatile" = "yes"; then + AC_DEFINE(HAVE_SIG_ATOMIC_T_VOLATILE, 1, + [Define to 1 if sig_atomic_t is already defined as volatile.]) + fi + ;; + esac +]) + + +dnl TYPE_IN_ADDR_T +dnl ------------------------------------------------- +dnl Check for in_addr_t: it is used to receive the return code of inet_addr() +dnl and a few other things. + +AC_DEFUN([TYPE_IN_ADDR_T], [ + AC_CHECK_TYPE([in_addr_t], ,[ + dnl in_addr_t not available + AC_CACHE_CHECK([for in_addr_t equivalent], + [curl_cv_in_addr_t_equiv], [ + curl_cv_in_addr_t_equiv="unknown" + for t in "unsigned long" int size_t unsigned long; do + if test "$curl_cv_in_addr_t_equiv" = "unknown"; then + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]],[[ + $t data = inet_addr ("1.2.3.4"); + ]]) + ],[ + curl_cv_in_addr_t_equiv="$t" + ]) + fi + done + ]) + case "$curl_cv_in_addr_t_equiv" in + unknown) + AC_MSG_ERROR([Cannot find a type to use in place of in_addr_t]) + ;; + *) + AC_DEFINE_UNQUOTED(in_addr_t, $curl_cv_in_addr_t_equiv, + [Type to use in place of in_addr_t when system does not provide it.]) + ;; + esac + ],[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#endif + ]) +]) + + +dnl CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC +dnl ------------------------------------------------- +dnl Check if monotonic clock_gettime is available. + +AC_DEFUN([CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC], [ + AC_REQUIRE([AC_HEADER_TIME])dnl + AC_CHECK_HEADERS(sys/types.h sys/time.h time.h) + AC_MSG_CHECKING([for monotonic clock_gettime]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + (void)clock_gettime(CLOCK_MONOTONIC, &ts); + ]]) + ],[ + AC_MSG_RESULT([yes]) + ac_cv_func_clock_gettime="yes" + ],[ + AC_MSG_RESULT([no]) + ac_cv_func_clock_gettime="no" + ]) + dnl Definition of HAVE_CLOCK_GETTIME_MONOTONIC is intentionally postponed + dnl until library linking and run-time checks for clock_gettime succeed. +]) + + +dnl CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC +dnl ------------------------------------------------- +dnl If monotonic clock_gettime is available then, +dnl check and prepended to LIBS any needed libraries. + +AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [ + AC_REQUIRE([CURL_CHECK_FUNC_CLOCK_GETTIME_MONOTONIC])dnl + # + if test "$ac_cv_func_clock_gettime" = "yes"; then + # + AC_MSG_CHECKING([for clock_gettime in libraries]) + # + curl_cv_save_LIBS="$LIBS" + curl_cv_gclk_LIBS="unknown" + # + for x_xlibs in '' '-lrt' '-lposix4' ; do + if test "$curl_cv_gclk_LIBS" = "unknown"; then + if test -z "$x_xlibs"; then + LIBS="$curl_cv_save_LIBS" + else + LIBS="$x_xlibs $curl_cv_save_LIBS" + fi + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + (void)clock_gettime(CLOCK_MONOTONIC, &ts); + ]]) + ],[ + curl_cv_gclk_LIBS="$x_xlibs" + ]) + fi + done + # + LIBS="$curl_cv_save_LIBS" + # + case X-"$curl_cv_gclk_LIBS" in + X-unknown) + AC_MSG_RESULT([cannot find clock_gettime]) + AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined]) + ac_cv_func_clock_gettime="no" + ;; + X-) + AC_MSG_RESULT([no additional lib required]) + ac_cv_func_clock_gettime="yes" + ;; + *) + if test -z "$curl_cv_save_LIBS"; then + LIBS="$curl_cv_gclk_LIBS" + else + LIBS="$curl_cv_gclk_LIBS $curl_cv_save_LIBS" + fi + AC_MSG_RESULT([$curl_cv_gclk_LIBS]) + ac_cv_func_clock_gettime="yes" + ;; + esac + # + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$ac_cv_func_clock_gettime" = "yes"; then + AC_MSG_CHECKING([if monotonic clock_gettime works]) + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + ]],[[ + struct timespec ts; + if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) + exit(0); + else + exit(1); + ]]) + ],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([HAVE_CLOCK_GETTIME_MONOTONIC will not be defined]) + ac_cv_func_clock_gettime="no" + LIBS="$curl_cv_save_LIBS" + ]) + fi + # + case "$ac_cv_func_clock_gettime" in + yes) + AC_DEFINE_UNQUOTED(HAVE_CLOCK_GETTIME_MONOTONIC, 1, + [Define to 1 if you have the clock_gettime function and monotonic timer.]) + ;; + esac + # + fi + # +]) + + +dnl CARES_CHECK_LIBS_CONNECT +dnl ------------------------------------------------- +dnl Verify if network connect function is already available +dnl using current libraries or if another one is required. + +AC_DEFUN([CARES_CHECK_LIBS_CONNECT], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_MSG_CHECKING([for connect in libraries]) + tst_connect_save_LIBS="$LIBS" + tst_connect_need_LIBS="unknown" + for tst_lib in '' '-lsocket' ; do + if test "$tst_connect_need_LIBS" = "unknown"; then + LIBS="$tst_lib $tst_connect_save_LIBS" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + #ifndef HAVE_WINDOWS_H + int connect(int, void*, int); + #endif + ]],[[ + if(0 != connect(0, 0, 0)) + return 1; + ]]) + ],[ + tst_connect_need_LIBS="$tst_lib" + ]) + fi + done + LIBS="$tst_connect_save_LIBS" + # + case X-"$tst_connect_need_LIBS" in + X-unknown) + AC_MSG_RESULT([cannot find connect]) + AC_MSG_ERROR([cannot find connect function in libraries.]) + ;; + X-) + AC_MSG_RESULT([yes]) + ;; + *) + AC_MSG_RESULT([$tst_connect_need_LIBS]) + LIBS="$tst_connect_need_LIBS $tst_connect_save_LIBS" + ;; + esac +]) + + +dnl CARES_DEFINE_UNQUOTED (VARIABLE, [VALUE]) +dnl ------------------------------------------------- +dnl Like AC_DEFINE_UNQUOTED this macro will define a C preprocessor +dnl symbol that can be further used in custom template configuration +dnl files. This macro, unlike AC_DEFINE_UNQUOTED, does not use a third +dnl argument for the description. Symbol definitions done with this +dnl macro are intended to be exclusively used in handcrafted *.h.in +dnl template files. Contrary to what AC_DEFINE_UNQUOTED does, this one +dnl prevents autoheader generation and insertion of symbol template +dnl stub and definition into the first configuration header file. Do +dnl not use this macro as a replacement for AC_DEFINE_UNQUOTED, each +dnl one serves different functional needs. + +AC_DEFUN([CARES_DEFINE_UNQUOTED], [ +cat >>confdefs.h <<_EOF +[@%:@define] $1 ifelse($#, 2, [$2], 1) +_EOF +]) + + +dnl CARES_CONFIGURE_LONG +dnl ------------------------------------------------- +dnl Find out the size of long as reported by sizeof() and define +dnl CARES_SIZEOF_LONG as appropriate to be used in template file +dnl ares_build.h.in to properly configure the library. +dnl The size of long is a build time characteristic and as such +dnl must be recorded in ares_build.h + +AC_DEFUN([CARES_CONFIGURE_LONG], [ + if test -z "$ac_cv_sizeof_long" || + test "$ac_cv_sizeof_long" -eq "0"; then + AC_MSG_ERROR([cannot find out size of long.]) + fi + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_LONG], [$ac_cv_sizeof_long]) +]) + + +dnl CARES_CONFIGURE_ARES_SOCKLEN_T +dnl ------------------------------------------------- +dnl Find out suitable ares_socklen_t data type definition and size, making +dnl appropriate definitions for template file ares_build.h.in +dnl to properly configure and use the library. +dnl +dnl The need for the ares_socklen_t definition arises mainly to properly +dnl interface HP-UX systems which on one hand have a typedef'ed socklen_t +dnl data type which is 32 or 64-Bit wide depending on the data model being +dnl used, and that on the other hand is only actually used when interfacing +dnl the X/Open sockets provided in the xnet library. + +AC_DEFUN([CARES_CONFIGURE_ARES_SOCKLEN_T], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_PREPROCESS_CALLCONV])dnl + # + AC_MSG_CHECKING([for ares_socklen_t data type]) + cares_typeof_ares_socklen_t="unknown" + for arg1 in int SOCKET; do + for arg2 in 'struct sockaddr' void; do + for t in socklen_t int size_t 'unsigned int' long 'unsigned long' void; do + if test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_preprocess_callconv + extern int FUNCALLCONV getpeername($arg1, $arg2 *, $t *); + ]],[[ + $t *lenptr = 0; + if(0 != getpeername(0, 0, lenptr)) + return 1; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + done + done + for t in socklen_t int; do + if test "$cares_typeof_ares_socklen_t" = "void"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_socket + typedef $t ares_socklen_t; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + AC_MSG_RESULT([$cares_typeof_ares_socklen_t]) + if test "$cares_typeof_ares_socklen_t" = "void" || + test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find data type for ares_socklen_t.]) + fi + # + AC_MSG_CHECKING([size of ares_socklen_t]) + cares_sizeof_ares_socklen_t="unknown" + cares_pull_headers_socklen_t="unknown" + if test "$ac_cv_header_ws2tcpip_h" = "yes"; then + tst_pull_header_checks='none ws2tcpip' + tst_size_checks='4' + else + tst_pull_header_checks='none systypes syssocket' + tst_size_checks='4 8 2' + fi + for tst_size in $tst_size_checks; do + for tst_pull_headers in $tst_pull_header_checks; do + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + case $tst_pull_headers in + ws2tcpip) + tmp_includes="$cares_includes_ws2tcpip" + ;; + systypes) + tmp_includes="$cares_includes_sys_types" + ;; + syssocket) + tmp_includes="$cares_includes_sys_socket" + ;; + *) + tmp_includes="" + ;; + esac + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $tmp_includes + typedef $cares_typeof_ares_socklen_t ares_socklen_t; + typedef char dummy_arr[sizeof(ares_socklen_t) == $tst_size ? 1 : -1]; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_sizeof_ares_socklen_t="$tst_size" + cares_pull_headers_socklen_t="$tst_pull_headers" + ]) + fi + done + done + AC_MSG_RESULT([$cares_sizeof_ares_socklen_t]) + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find out size of ares_socklen_t.]) + fi + # + case $cares_pull_headers_socklen_t in + ws2tcpip) + CARES_DEFINE_UNQUOTED([CARES_PULL_WS2TCPIP_H]) + ;; + systypes) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + ;; + syssocket) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_SOCKET_H]) + ;; + esac + CARES_DEFINE_UNQUOTED([CARES_TYPEOF_ARES_SOCKLEN_T], [$cares_typeof_ares_socklen_t]) + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_ARES_SOCKLEN_T], [$cares_sizeof_ares_socklen_t]) +]) + + +dnl This macro determines if the specified struct exists in the specified file +dnl Syntax: +dnl CARES_CHECK_STRUCT(headers, struct name, if found, [if not found]) + +AC_DEFUN([CARES_CHECK_STRUCT], [ + AC_MSG_CHECKING([for struct $2]) + AC_TRY_COMPILE([$1], + [ + struct $2 struct_instance; + ], ac_struct="yes", ac_found="no") + if test "$ac_struct" = "yes" ; then + AC_MSG_RESULT(yes) + $3 + else + AC_MSG_RESULT(no) + $4 + fi +]) + +dnl This macro determines if the specified constant exists in the specified file +dnl Syntax: +dnl CARES_CHECK_CONSTANT(headers, constant name, if found, [if not found]) + +AC_DEFUN([CARES_CHECK_CONSTANT], [ + AC_MSG_CHECKING([for $2]) + AC_EGREP_CPP(VARIABLEWASDEFINED, + [ + $1 + + #ifdef $2 + VARIABLEWASDEFINED + #else + NJET + #endif + ], ac_constant="yes", ac_constant="no" + ) + if test "$ac_constant" = "yes" ; then + AC_MSG_RESULT(yes) + $3 + else + AC_MSG_RESULT(no) + $4 + fi +]) + diff --git a/acountry.c b/acountry.c new file mode 100644 index 0000000..dbcf46b --- /dev/null +++ b/acountry.c @@ -0,0 +1,628 @@ +/* + * $Id: acountry.c,v 1.18 2009-11-10 18:41:03 yangtse Exp $ + * + * IP-address/hostname to country converter. + * + * Problem; you want to know where IP a.b.c.d is located. + * + * Use ares_gethostbyname ("d.c.b.a.zz.countries.nerd.dk") + * and get the CNAME (host->h_name). Result will be: + * CNAME = zz<CC>.countries.nerd.dk with address 127.0.x.y (ver 1) or + * CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.x.y (ver 2) + * + * The 2 letter country code is in <CC> and the ISO-3166 country + * number is in x.y (number = x*256 + y). Version 2 of the protocol is missing + * the <CC> number. + * + * Ref: http://countries.nerd.dk/more.html + * + * Written by G. Vanem <gvanem@broadpark.no> 2006, 2007 + * + * NB! This program may not be big-endian aware. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <ctype.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#if defined(WIN32) && !defined(WATT32) + #include <winsock.h> +#else + #include <sys/socket.h> + #include <arpa/inet.h> + #include <netinet/in.h> + #include <netdb.h> +#endif + +#include "ares.h" +#include "ares_getopt.h" +#include "inet_net_pton.h" +#include "inet_ntop.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifndef INADDR_NONE +#define INADDR_NONE 0xffffffff +#endif + +static const char *usage = "acountry [-vh?] {host|addr} ...\n"; +static const char nerd_fmt[] = "%u.%u.%u.%u.zz.countries.nerd.dk"; +static const char *nerd_ver1 = nerd_fmt + 14; +static const char *nerd_ver2 = nerd_fmt + 11; +static int verbose = 0; + +#define TRACE(fmt) do { \ + if (verbose > 0) \ + printf fmt ; \ + } while (0) + +static void wait_ares(ares_channel channel); +static void callback(void *arg, int status, int timeouts, struct hostent *host); +static void callback2(void *arg, int status, int timeouts, struct hostent *host); +static void find_country_from_cname(const char *cname, struct in_addr addr); + +static void Abort(const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + exit(1); +} + +int main(int argc, char **argv) +{ + ares_channel channel; + int ch, status; + +#if defined(WIN32) && !defined(WATT32) + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + while ((ch = ares_getopt(argc, argv, "dvh?")) != -1) + switch (ch) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + case 'v': + verbose++; + break; + case 'h': + case '?': + default: + Abort(usage); + } + + argc -= optind; + argv += optind; + if (argc < 1) + Abort(usage); + + status = ares_init(&channel); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init: %s\n", ares_strerror(status)); + return 1; + } + + /* Initiate the queries, one per command-line argument. */ + for ( ; *argv; argv++) + { + struct in_addr addr; + char buf[100]; + + /* If this fails, assume '*argv' is a host-name that + * must be resolved first + */ + if (ares_inet_pton(AF_INET, *argv, &addr) != 1) + { + ares_gethostbyname(channel, *argv, AF_INET, callback2, &addr); + wait_ares(channel); + if (addr.s_addr == INADDR_NONE) + { + printf("Failed to lookup %s\n", *argv); + continue; + } + } + + sprintf(buf, nerd_fmt, + (unsigned int)(addr.s_addr >> 24), + (unsigned int)((addr.s_addr >> 16) & 255), + (unsigned int)((addr.s_addr >> 8) & 255), + (unsigned int)(addr.s_addr & 255)); + TRACE(("Looking up %s...", buf)); + fflush(stdout); + ares_gethostbyname(channel, buf, AF_INET, callback, buf); + } + + wait_ares(channel); + ares_destroy(channel); + + ares_library_cleanup(); + +#if defined(WIN32) && !defined(WATT32) + WSACleanup(); +#endif + + return 0; +} + +/* + * Wait for the queries to complete. + */ +static void wait_ares(ares_channel channel) +{ + for (;;) + { + struct timeval *tvp, tv; + fd_set read_fds, write_fds; + int nfds; + + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + select(nfds, &read_fds, &write_fds, NULL, tvp); + ares_process(channel, &read_fds, &write_fds); + } +} + +/* + * This is the callback used when we have the IP-address of interest. + * Extract the CNAME and figure out the country-code from it. + */ +static void callback(void *arg, int status, int timeouts, struct hostent *host) +{ + const char *name = (const char*)arg; + const char *cname; + char buf[20]; + + (void)timeouts; + + if (!host || status != ARES_SUCCESS) + { + printf("Failed to lookup %s: %s\n", name, ares_strerror(status)); + return; + } + + TRACE(("\nFound address %s, name %s\n", + ares_inet_ntop(AF_INET,(const char*)host->h_addr,buf,sizeof(buf)), + host->h_name)); + + cname = host->h_name; /* CNAME gets put here */ + if (!cname) + printf("Failed to get CNAME for %s\n", name); + else + find_country_from_cname(cname, *(struct in_addr*)host->h_addr); +} + +/* + * This is the callback used to obtain the IP-address of the host of interest. + */ +static void callback2(void *arg, int status, int timeouts, struct hostent *host) +{ + struct in_addr *addr = (struct in_addr*) arg; + + (void)timeouts; + if (!host || status != ARES_SUCCESS) + memset(addr, INADDR_NONE, sizeof(*addr)); + else + memcpy(addr, host->h_addr, sizeof(*addr)); +} + +struct search_list { + int country_number; /* ISO-3166 country number */ + char short_name[3]; /* A2 short country code */ + const char *long_name; /* normal country name */ + }; + +static const struct search_list *list_lookup(int number, const struct search_list *list, int num) +{ + while (num > 0 && list->long_name) + { + if (list->country_number == number) + return (list); + num--; + list++; + } + return (NULL); +} + +/* + * Ref: ftp://ftp.ripe.net/iso3166-countrycodes.txt + */ +static const struct search_list country_list[] = { + { 4, "af", "Afghanistan" }, + { 248, "ax", "Åland Island" }, + { 8, "al", "Albania" }, + { 12, "dz", "Algeria" }, + { 16, "as", "American Samoa" }, + { 20, "ad", "Andorra" }, + { 24, "ao", "Angola" }, + { 660, "ai", "Anguilla" }, + { 10, "aq", "Antarctica" }, + { 28, "ag", "Antigua & Barbuda" }, + { 32, "ar", "Argentina" }, + { 51, "am", "Armenia" }, + { 533, "aw", "Aruba" }, + { 36, "au", "Australia" }, + { 40, "at", "Austria" }, + { 31, "az", "Azerbaijan" }, + { 44, "bs", "Bahamas" }, + { 48, "bh", "Bahrain" }, + { 50, "bd", "Bangladesh" }, + { 52, "bb", "Barbados" }, + { 112, "by", "Belarus" }, + { 56, "be", "Belgium" }, + { 84, "bz", "Belize" }, + { 204, "bj", "Benin" }, + { 60, "bm", "Bermuda" }, + { 64, "bt", "Bhutan" }, + { 68, "bo", "Bolivia" }, + { 70, "ba", "Bosnia & Herzegowina" }, + { 72, "bw", "Botswana" }, + { 74, "bv", "Bouvet Island" }, + { 76, "br", "Brazil" }, + { 86, "io", "British Indian Ocean Territory" }, + { 96, "bn", "Brunei Darussalam" }, + { 100, "bg", "Bulgaria" }, + { 854, "bf", "Burkina Faso" }, + { 108, "bi", "Burundi" }, + { 116, "kh", "Cambodia" }, + { 120, "cm", "Cameroon" }, + { 124, "ca", "Canada" }, + { 132, "cv", "Cape Verde" }, + { 136, "ky", "Cayman Islands" }, + { 140, "cf", "Central African Republic" }, + { 148, "td", "Chad" }, + { 152, "cl", "Chile" }, + { 156, "cn", "China" }, + { 162, "cx", "Christmas Island" }, + { 166, "cc", "Cocos Islands" }, + { 170, "co", "Colombia" }, + { 174, "km", "Comoros" }, + { 178, "cg", "Congo" }, + { 180, "cd", "Congo" }, + { 184, "ck", "Cook Islands" }, + { 188, "cr", "Costa Rica" }, + { 384, "ci", "Cote d'Ivoire" }, + { 191, "hr", "Croatia" }, + { 192, "cu", "Cuba" }, + { 196, "cy", "Cyprus" }, + { 203, "cz", "Czech Republic" }, + { 208, "dk", "Denmark" }, + { 262, "dj", "Djibouti" }, + { 212, "dm", "Dominica" }, + { 214, "do", "Dominican Republic" }, + { 218, "ec", "Ecuador" }, + { 818, "eg", "Egypt" }, + { 222, "sv", "El Salvador" }, + { 226, "gq", "Equatorial Guinea" }, + { 232, "er", "Eritrea" }, + { 233, "ee", "Estonia" }, + { 231, "et", "Ethiopia" }, + { 238, "fk", "Falkland Islands" }, + { 234, "fo", "Faroe Islands" }, + { 242, "fj", "Fiji" }, + { 246, "fi", "Finland" }, + { 250, "fr", "France" }, + { 249, "fx", "France, Metropolitan" }, + { 254, "gf", "French Guiana" }, + { 258, "pf", "French Polynesia" }, + { 260, "tf", "French Southern Territories" }, + { 266, "ga", "Gabon" }, + { 270, "gm", "Gambia" }, + { 268, "ge", "Georgia" }, + { 276, "de", "Germany" }, + { 288, "gh", "Ghana" }, + { 292, "gi", "Gibraltar" }, + { 300, "gr", "Greece" }, + { 304, "gl", "Greenland" }, + { 308, "gd", "Grenada" }, + { 312, "gp", "Guadeloupe" }, + { 316, "gu", "Guam" }, + { 320, "gt", "Guatemala" }, + { 324, "gn", "Guinea" }, + { 624, "gw", "Guinea-Bissau" }, + { 328, "gy", "Guyana" }, + { 332, "ht", "Haiti" }, + { 334, "hm", "Heard & Mc Donald Islands" }, + { 336, "va", "Vatican City" }, + { 340, "hn", "Honduras" }, + { 344, "hk", "Hong kong" }, + { 348, "hu", "Hungary" }, + { 352, "is", "Iceland" }, + { 356, "in", "India" }, + { 360, "id", "Indonesia" }, + { 364, "ir", "Iran" }, + { 368, "iq", "Iraq" }, + { 372, "ie", "Ireland" }, + { 376, "il", "Israel" }, + { 380, "it", "Italy" }, + { 388, "jm", "Jamaica" }, + { 392, "jp", "Japan" }, + { 400, "jo", "Jordan" }, + { 398, "kz", "Kazakhstan" }, + { 404, "ke", "Kenya" }, + { 296, "ki", "Kiribati" }, + { 408, "kp", "Korea (north)" }, + { 410, "kr", "Korea (south)" }, + { 414, "kw", "Kuwait" }, + { 417, "kg", "Kyrgyzstan" }, + { 418, "la", "Laos" }, + { 428, "lv", "Latvia" }, + { 422, "lb", "Lebanon" }, + { 426, "ls", "Lesotho" }, + { 430, "lr", "Liberia" }, + { 434, "ly", "Libya" }, + { 438, "li", "Liechtenstein" }, + { 440, "lt", "Lithuania" }, + { 442, "lu", "Luxembourg" }, + { 446, "mo", "Macao" }, + { 807, "mk", "Macedonia" }, + { 450, "mg", "Madagascar" }, + { 454, "mw", "Malawi" }, + { 458, "my", "Malaysia" }, + { 462, "mv", "Maldives" }, + { 466, "ml", "Mali" }, + { 470, "mt", "Malta" }, + { 584, "mh", "Marshall Islands" }, + { 474, "mq", "Martinique" }, + { 478, "mr", "Mauritania" }, + { 480, "mu", "Mauritius" }, + { 175, "yt", "Mayotte" }, + { 484, "mx", "Mexico" }, + { 583, "fm", "Micronesia" }, + { 498, "md", "Moldova" }, + { 492, "mc", "Monaco" }, + { 496, "mn", "Mongolia" }, + { 500, "ms", "Montserrat" }, + { 504, "ma", "Morocco" }, + { 508, "mz", "Mozambique" }, + { 104, "mm", "Myanmar" }, + { 516, "na", "Namibia" }, + { 520, "nr", "Nauru" }, + { 524, "np", "Nepal" }, + { 528, "nl", "Netherlands" }, + { 530, "an", "Netherlands Antilles" }, + { 540, "nc", "New Caledonia" }, + { 554, "nz", "New Zealand" }, + { 558, "ni", "Nicaragua" }, + { 562, "ne", "Niger" }, + { 566, "ng", "Nigeria" }, + { 570, "nu", "Niue" }, + { 574, "nf", "Norfolk Island" }, + { 580, "mp", "Northern Mariana Islands" }, + { 578, "no", "Norway" }, + { 512, "om", "Oman" }, + { 586, "pk", "Pakistan" }, + { 585, "pw", "Palau" }, + { 275, "ps", "Palestinian Territory" }, + { 591, "pa", "Panama" }, + { 598, "pg", "Papua New Guinea" }, + { 600, "py", "Paraguay" }, + { 604, "pe", "Peru" }, + { 608, "ph", "Philippines" }, + { 612, "pn", "Pitcairn" }, + { 616, "pl", "Poland" }, + { 620, "pt", "Portugal" }, + { 630, "pr", "Puerto Rico" }, + { 634, "qa", "Qatar" }, + { 638, "re", "Reunion" }, + { 642, "ro", "Romania" }, + { 643, "ru", "Russia" }, + { 646, "rw", "Rwanda" }, + { 659, "kn", "Saint Kitts & Nevis" }, + { 662, "lc", "Saint Lucia" }, + { 670, "vc", "Saint Vincent" }, + { 882, "ws", "Samoa" }, + { 674, "sm", "San Marino" }, + { 678, "st", "Sao Tome & Principe" }, + { 682, "sa", "Saudi Arabia" }, + { 686, "sn", "Senegal" }, + { 891, "cs", "Serbia and Montenegro" }, + { 690, "sc", "Seychelles" }, + { 694, "sl", "Sierra Leone" }, + { 702, "sg", "Singapore" }, + { 703, "sk", "Slovakia" }, + { 705, "si", "Slovenia" }, + { 90, "sb", "Solomon Islands" }, + { 706, "so", "Somalia" }, + { 710, "za", "South Africa" }, + { 239, "gs", "South Georgia" }, + { 724, "es", "Spain" }, + { 144, "lk", "Sri Lanka" }, + { 654, "sh", "St. Helena" }, + { 666, "pm", "St. Pierre & Miquelon" }, + { 736, "sd", "Sudan" }, + { 740, "sr", "Suriname" }, + { 744, "sj", "Svalbard & Jan Mayen Islands" }, + { 748, "sz", "Swaziland" }, + { 752, "se", "Sweden" }, + { 756, "ch", "Switzerland" }, + { 760, "sy", "Syrian Arab Republic" }, + { 626, "tl", "Timor-Leste" }, + { 158, "tw", "Taiwan" }, + { 762, "tj", "Tajikistan" }, + { 834, "tz", "Tanzania" }, + { 764, "th", "Thailand" }, + { 768, "tg", "Togo" }, + { 772, "tk", "Tokelau" }, + { 776, "to", "Tonga" }, + { 780, "tt", "Trinidad & Tobago" }, + { 788, "tn", "Tunisia" }, + { 792, "tr", "Turkey" }, + { 795, "tm", "Turkmenistan" }, + { 796, "tc", "Turks & Caicos Islands" }, + { 798, "tv", "Tuvalu" }, + { 800, "ug", "Uganda" }, + { 804, "ua", "Ukraine" }, + { 784, "ae", "United Arab Emirates" }, + { 826, "gb", "United Kingdom" }, + { 840, "us", "United States" }, + { 581, "um", "United States Minor Outlying Islands" }, + { 858, "uy", "Uruguay" }, + { 860, "uz", "Uzbekistan" }, + { 548, "vu", "Vanuatu" }, + { 862, "ve", "Venezuela" }, + { 704, "vn", "Vietnam" }, + { 92, "vg", "Virgin Islands (British)" }, + { 850, "vi", "Virgin Islands (US)" }, + { 876, "wf", "Wallis & Futuna Islands" }, + { 732, "eh", "Western Sahara" }, + { 887, "ye", "Yemen" }, + { 894, "zm", "Zambia" }, + { 716, "zw", "Zimbabwe" } + }; + +/* + * Check if start of 'str' is simply an IPv4 address. + */ +#define BYTE_OK(x) ((x) >= 0 && (x) <= 255) + +static int is_addr(char *str, char **end) +{ + int a0, a1, a2, a3, num, rc = 0, length = 0; + + num = sscanf(str,"%3d.%3d.%3d.%3d%n",&a0,&a1,&a2,&a3,&length); + if( (num == 4) && + BYTE_OK(a0) && BYTE_OK(a1) && BYTE_OK(a2) && BYTE_OK(a3) && + length >= (3+4)) + { + rc = 1; + *end = str + length; + } + return rc; +} + +/* + * Find the country-code and name from the CNAME. E.g.: + * version 1: CNAME = zzno.countries.nerd.dk with address 127.0.2.66 + * yields ccode_A" = "no" and cnumber 578 (2.66). + * version 2: CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.2.66 + * yields cnumber 578 (2.66). ccode_A is ""; + */ +static void find_country_from_cname(const char *cname, struct in_addr addr) +{ + const struct search_list *country; + char ccode_A2[3], *ccopy, *dot_4; + int cnumber, z0, z1, ver_1, ver_2; + unsigned long ip; + + ip = ntohl(addr.s_addr); + z0 = tolower(cname[0]); + z1 = tolower(cname[1]); + ccopy = strdup(cname); + dot_4 = NULL; + + ver_1 = (z0 == 'z' && z1 == 'z' && !strcasecmp(cname+4,nerd_ver1)); + ver_2 = (is_addr(ccopy,&dot_4) && !strcasecmp(dot_4,nerd_ver2)); + + if (ver_1) + { + const char *dot = strchr(cname, '.'); + if ((z0 != 'z' && z1 != 'z') || dot != cname+4) + { + printf("Unexpected CNAME %s (ver_1)\n", cname); + return; + } + } + else if (ver_2) + { + z0 = tolower(dot_4[1]); + z1 = tolower(dot_4[2]); + if (z0 != 'z' && z1 != 'z') + { + printf("Unexpected CNAME %s (ver_2)\n", cname); + return; + } + } + else + { + printf("Unexpected CNAME %s (ver?)\n", cname); + return; + } + + if (ver_1) + { + ccode_A2[0] = (char)tolower(cname[2]); + ccode_A2[1] = (char)tolower(cname[3]); + ccode_A2[2] = '\0'; + } + else + ccode_A2[0] = '\0'; + + cnumber = ip & 0xFFFF; + + TRACE(("Found country-code `%s', number %d\n", + ver_1 ? ccode_A2 : "<n/a>", cnumber)); + + country = list_lookup(cnumber, country_list, + sizeof(country_list) / sizeof(country_list[0])); + if (!country) + printf("Name for country-number %d not found.\n", cnumber); + else + { + if (ver_1) + { + if ((country->short_name[0] != ccode_A2[0]) || + (country->short_name[1] != ccode_A2[1]) || + (country->short_name[2] != ccode_A2[2])) + printf("short-name mismatch; %s vs %s\n", + country->short_name, ccode_A2); + } + printf("%s (%s), number %d.\n", + country->long_name, country->short_name, cnumber); + } + free(ccopy); +} + @@ -0,0 +1,751 @@ +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * $Id: adig.c,v 1.43 2009-11-16 20:02:12 yangtse Exp $ + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "ares.h" +#include "ares_dns.h" +#include "inet_ntop.h" +#include "inet_net_pton.h" +#include "ares_getopt.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifdef WATT32 +#undef WIN32 /* Redefined in MingW headers */ +#endif + +/* Mac OS X portability check */ +#ifndef T_SRV +#define T_SRV 33 /* server selection */ +#endif + +/* AIX portability check */ +#ifndef T_NAPTR +#define T_NAPTR 35 /* naming authority pointer */ +#endif + +struct nv { + const char *name; + int value; +}; + +static const struct nv flags[] = { + { "usevc", ARES_FLAG_USEVC }, + { "primary", ARES_FLAG_PRIMARY }, + { "igntc", ARES_FLAG_IGNTC }, + { "norecurse", ARES_FLAG_NORECURSE }, + { "stayopen", ARES_FLAG_STAYOPEN }, + { "noaliases", ARES_FLAG_NOALIASES } +}; +static const int nflags = sizeof(flags) / sizeof(flags[0]); + +static const struct nv classes[] = { + { "IN", C_IN }, + { "CHAOS", C_CHAOS }, + { "HS", C_HS }, + { "ANY", C_ANY } +}; +static const int nclasses = sizeof(classes) / sizeof(classes[0]); + +static const struct nv types[] = { + { "A", T_A }, + { "NS", T_NS }, + { "MD", T_MD }, + { "MF", T_MF }, + { "CNAME", T_CNAME }, + { "SOA", T_SOA }, + { "MB", T_MB }, + { "MG", T_MG }, + { "MR", T_MR }, + { "NULL", T_NULL }, + { "WKS", T_WKS }, + { "PTR", T_PTR }, + { "HINFO", T_HINFO }, + { "MINFO", T_MINFO }, + { "MX", T_MX }, + { "TXT", T_TXT }, + { "RP", T_RP }, + { "AFSDB", T_AFSDB }, + { "X25", T_X25 }, + { "ISDN", T_ISDN }, + { "RT", T_RT }, + { "NSAP", T_NSAP }, + { "NSAP_PTR", T_NSAP_PTR }, + { "SIG", T_SIG }, + { "KEY", T_KEY }, + { "PX", T_PX }, + { "GPOS", T_GPOS }, + { "AAAA", T_AAAA }, + { "LOC", T_LOC }, + { "SRV", T_SRV }, + { "AXFR", T_AXFR }, + { "MAILB", T_MAILB }, + { "MAILA", T_MAILA }, + { "NAPTR", T_NAPTR }, + { "ANY", T_ANY } +}; +static const int ntypes = sizeof(types) / sizeof(types[0]); + +static const char *opcodes[] = { + "QUERY", "IQUERY", "STATUS", "(reserved)", "NOTIFY", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", + "UPDATEA", "UPDATED", "UPDATEDA", "UPDATEM", "UPDATEMA", + "ZONEINIT", "ZONEREF" +}; + +static const char *rcodes[] = { + "NOERROR", "FORMERR", "SERVFAIL", "NXDOMAIN", "NOTIMP", "REFUSED", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", "(unknown)", + "(unknown)", "(unknown)", "(unknown)", "(unknown)", "NOCHANGE" +}; + +static struct in_addr inaddr; + +static void callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static const unsigned char *display_question(const unsigned char *aptr, + const unsigned char *abuf, + int alen); +static const unsigned char *display_rr(const unsigned char *aptr, + const unsigned char *abuf, int alen); +static const char *type_name(int type); +static const char *class_name(int dnsclass); +static void usage(void); + +int main(int argc, char **argv) +{ + ares_channel channel; + int c, i, optmask = ARES_OPT_FLAGS, dnsclass = C_IN, type = T_A; + int status, nfds, count; + struct ares_options options; + struct hostent *hostent; + fd_set read_fds, write_fds; + struct timeval *tvp, tv; + +#ifdef USE_WINSOCK + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + options.flags = ARES_FLAG_NOCHECKRESP; + options.servers = NULL; + options.nservers = 0; + while ((c = ares_getopt(argc, argv, "df:s:c:t:T:U:")) != -1) + { + switch (c) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + + case 'f': + /* Add a flag. */ + for (i = 0; i < nflags; i++) + { + if (strcmp(flags[i].name, optarg) == 0) + break; + } + if (i < nflags) + options.flags |= flags[i].value; + else + usage(); + break; + + case 's': + /* Add a server, and specify servers in the option mask. */ + if (ares_inet_pton(AF_INET, optarg, &inaddr) <= 0) + { + hostent = gethostbyname(optarg); + if (!hostent || hostent->h_addrtype != AF_INET) + { + fprintf(stderr, "adig: server %s not found.\n", optarg); + return 1; + } + memcpy(&inaddr, hostent->h_addr, sizeof(struct in_addr)); + } + options.servers = realloc(options.servers, (options.nservers + 1) + * sizeof(struct in_addr)); + if (!options.servers) + { + fprintf(stderr, "Out of memory!\n"); + return 1; + } + memcpy(&options.servers[options.nservers], &inaddr, + sizeof(struct in_addr)); + options.nservers++; + optmask |= ARES_OPT_SERVERS; + break; + + case 'c': + /* Set the query class. */ + for (i = 0; i < nclasses; i++) + { + if (strcasecmp(classes[i].name, optarg) == 0) + break; + } + if (i < nclasses) + dnsclass = classes[i].value; + else + usage(); + break; + + case 't': + /* Set the query type. */ + for (i = 0; i < ntypes; i++) + { + if (strcasecmp(types[i].name, optarg) == 0) + break; + } + if (i < ntypes) + type = types[i].value; + else + usage(); + break; + + case 'T': + /* Set the TCP port number. */ + if (!ISDIGIT(*optarg)) + usage(); + options.tcp_port = (unsigned short)strtol(optarg, NULL, 0); + optmask |= ARES_OPT_TCP_PORT; + break; + + case 'U': + /* Set the UDP port number. */ + if (!ISDIGIT(*optarg)) + usage(); + options.udp_port = (unsigned short)strtol(optarg, NULL, 0); + optmask |= ARES_OPT_UDP_PORT; + break; + } + } + argc -= optind; + argv += optind; + if (argc == 0) + usage(); + + status = ares_init_options(&channel, &options, optmask); + + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init_options: %s\n", + ares_strerror(status)); + return 1; + } + + /* Initiate the queries, one per command-line argument. If there is + * only one query to do, supply NULL as the callback argument; + * otherwise, supply the query name as an argument so we can + * distinguish responses for the user when printing them out. + */ + if (argc == 1) + ares_query(channel, *argv, dnsclass, type, callback, (char *) NULL); + else + { + for (; *argv; argv++) + ares_query(channel, *argv, dnsclass, type, callback, *argv); + } + + /* Wait for all queries to complete. */ + for (;;) + { + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + count = select(nfds, &read_fds, &write_fds, NULL, tvp); + if (count < 0 && SOCKERRNO != EINVAL) + { + perror("select"); + return 1; + } + ares_process(channel, &read_fds, &write_fds); + } + + ares_destroy(channel); + + ares_library_cleanup(); + +#ifdef USE_WINSOCK + WSACleanup(); +#endif + + return 0; +} + +static void callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + char *name = (char *) arg; + int id, qr, opcode, aa, tc, rd, ra, rcode; + unsigned int qdcount, ancount, nscount, arcount, i; + const unsigned char *aptr; + + (void) timeouts; + + /* Display the query name if given. */ + if (name) + printf("Answer for query %s:\n", name); + + /* Display an error message if there was an error, but only stop if + * we actually didn't get an answer buffer. + */ + if (status != ARES_SUCCESS) + { + printf("%s\n", ares_strerror(status)); + if (!abuf) + return; + } + + /* Won't happen, but check anyway, for safety. */ + if (alen < HFIXEDSZ) + return; + + /* Parse the answer header. */ + id = DNS_HEADER_QID(abuf); + qr = DNS_HEADER_QR(abuf); + opcode = DNS_HEADER_OPCODE(abuf); + aa = DNS_HEADER_AA(abuf); + tc = DNS_HEADER_TC(abuf); + rd = DNS_HEADER_RD(abuf); + ra = DNS_HEADER_RA(abuf); + rcode = DNS_HEADER_RCODE(abuf); + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + nscount = DNS_HEADER_NSCOUNT(abuf); + arcount = DNS_HEADER_ARCOUNT(abuf); + + /* Display the answer header. */ + printf("id: %d\n", id); + printf("flags: %s%s%s%s%s\n", + qr ? "qr " : "", + aa ? "aa " : "", + tc ? "tc " : "", + rd ? "rd " : "", + ra ? "ra " : ""); + printf("opcode: %s\n", opcodes[opcode]); + printf("rcode: %s\n", rcodes[rcode]); + + /* Display the questions. */ + printf("Questions:\n"); + aptr = abuf + HFIXEDSZ; + for (i = 0; i < qdcount; i++) + { + aptr = display_question(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the answers. */ + printf("Answers:\n"); + for (i = 0; i < ancount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the NS records. */ + printf("NS records:\n"); + for (i = 0; i < nscount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } + + /* Display the additional records. */ + printf("Additional records:\n"); + for (i = 0; i < arcount; i++) + { + aptr = display_rr(aptr, abuf, alen); + if (aptr == NULL) + return; + } +} + +static const unsigned char *display_question(const unsigned char *aptr, + const unsigned char *abuf, + int alen) +{ + char *name; + int type, dnsclass, status; + long len; + + /* Parse the question name. */ + status = ares_expand_name(aptr, abuf, alen, &name, &len); + if (status != ARES_SUCCESS) + return NULL; + aptr += len; + + /* Make sure there's enough data after the name for the fixed part + * of the question. + */ + if (aptr + QFIXEDSZ > abuf + alen) + { + ares_free_string(name); + return NULL; + } + + /* Parse the question type and class. */ + type = DNS_QUESTION_TYPE(aptr); + dnsclass = DNS_QUESTION_CLASS(aptr); + aptr += QFIXEDSZ; + + /* Display the question, in a format sort of similar to how we will + * display RRs. + */ + printf("\t%-15s.\t", name); + if (dnsclass != C_IN) + printf("\t%s", class_name(dnsclass)); + printf("\t%s\n", type_name(type)); + ares_free_string(name); + return aptr; +} + +static const unsigned char *display_rr(const unsigned char *aptr, + const unsigned char *abuf, int alen) +{ + const unsigned char *p; + int type, dnsclass, ttl, dlen, status; + long len; + char addr[46]; + union { + unsigned char * as_uchar; + char * as_char; + } name; + + /* Parse the RR name. */ + status = ares_expand_name(aptr, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + aptr += len; + + /* Make sure there is enough data after the RR name for the fixed + * part of the RR. + */ + if (aptr + RRFIXEDSZ > abuf + alen) + { + ares_free_string(name.as_char); + return NULL; + } + + /* Parse the fixed part of the RR, and advance to the RR data + * field. */ + type = DNS_RR_TYPE(aptr); + dnsclass = DNS_RR_CLASS(aptr); + ttl = DNS_RR_TTL(aptr); + dlen = DNS_RR_LEN(aptr); + aptr += RRFIXEDSZ; + if (aptr + dlen > abuf + alen) + { + ares_free_string(name.as_char); + return NULL; + } + + /* Display the RR name, class, and type. */ + printf("\t%-15s.\t%d", name.as_char, ttl); + if (dnsclass != C_IN) + printf("\t%s", class_name(dnsclass)); + printf("\t%s", type_name(type)); + ares_free_string(name.as_char); + + /* Display the RR data. Don't touch aptr. */ + switch (type) + { + case T_CNAME: + case T_MB: + case T_MD: + case T_MF: + case T_MG: + case T_MR: + case T_NS: + case T_PTR: + /* For these types, the RR data is just a domain name. */ + status = ares_expand_name(aptr, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_HINFO: + /* The RR data is two length-counted character strings. */ + p = aptr; + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + p += len; + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + break; + + case T_MINFO: + /* The RR data is two domain names. */ + p = aptr; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + p += len; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_MX: + /* The RR data is two bytes giving a preference ordering, and + * then a domain name. + */ + if (dlen < 2) + return NULL; + printf("\t%d", DNS__16BIT(aptr)); + status = ares_expand_name(aptr + 2, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_SOA: + /* The RR data is two domain names and then five four-byte + * numbers giving the serial number and some timeouts. + */ + p = aptr; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.\n", name.as_char); + ares_free_string(name.as_char); + p += len; + status = ares_expand_name(p, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s.\n", name.as_char); + ares_free_string(name.as_char); + p += len; + if (p + 20 > aptr + dlen) + return NULL; + printf("\t\t\t\t\t\t( %lu %lu %lu %lu %lu )", + (unsigned long)DNS__32BIT(p), (unsigned long)DNS__32BIT(p+4), + (unsigned long)DNS__32BIT(p+8), (unsigned long)DNS__32BIT(p+12), + (unsigned long)DNS__32BIT(p+16)); + break; + + case T_TXT: + /* The RR data is one or more length-counted character + * strings. */ + p = aptr; + while (p < aptr + dlen) + { + len = *p; + if (p + len + 1 > aptr + dlen) + return NULL; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s", name.as_char); + ares_free_string(name.as_char); + p += len; + } + break; + + case T_A: + /* The RR data is a four-byte Internet address. */ + if (dlen != 4) + return NULL; + printf("\t%s", ares_inet_ntop(AF_INET,aptr,addr,sizeof(addr))); + break; + + case T_AAAA: + /* The RR data is a 16-byte IPv6 address. */ + if (dlen != 16) + return NULL; + printf("\t%s", ares_inet_ntop(AF_INET6,aptr,addr,sizeof(addr))); + break; + + case T_WKS: + /* Not implemented yet */ + break; + + case T_SRV: + /* The RR data is three two-byte numbers representing the + * priority, weight, and port, followed by a domain name. + */ + + printf("\t%d", DNS__16BIT(aptr)); + printf(" %d", DNS__16BIT(aptr + 2)); + printf(" %d", DNS__16BIT(aptr + 4)); + + status = ares_expand_name(aptr + 6, abuf, alen, &name.as_char, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t%s.", name.as_char); + ares_free_string(name.as_char); + break; + + case T_NAPTR: + + printf("\t%d", DNS__16BIT(aptr)); /* order */ + printf(" %d\n", DNS__16BIT(aptr + 2)); /* preference */ + + p = aptr + 4; + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s\n", name.as_char); + ares_free_string(name.as_char); + p += len; + + status = ares_expand_string(p, abuf, alen, &name.as_uchar, &len); + if (status != ARES_SUCCESS) + return NULL; + printf("\t\t\t\t\t\t%s", name.as_char); + ares_free_string(name.as_char); + break; + + + default: + printf("\t[Unknown RR; cannot parse]"); + break; + } + printf("\n"); + + return aptr + dlen; +} + +static const char *type_name(int type) +{ + int i; + + for (i = 0; i < ntypes; i++) + { + if (types[i].value == type) + return types[i].name; + } + return "(unknown)"; +} + +static const char *class_name(int dnsclass) +{ + int i; + + for (i = 0; i < nclasses; i++) + { + if (classes[i].value == dnsclass) + return classes[i].name; + } + return "(unknown)"; +} + +static void usage(void) +{ + fprintf(stderr, "usage: adig [-f flag] [-s server] [-c class] " + "[-t type] [-p port] name ...\n"); + exit(1); +} @@ -0,0 +1,202 @@ +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * $Id: ahost.c,v 1.28 2009-11-10 18:41:03 yangtse Exp $ + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#if !defined(WIN32) || defined(WATT32) +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_dns.h" +#include "inet_ntop.h" +#include "inet_net_pton.h" +#include "ares_getopt.h" +#include "ares_ipv6.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +static void callback(void *arg, int status, int timeouts, struct hostent *host); +static void usage(void); + +int main(int argc, char **argv) +{ + ares_channel channel; + int status, nfds, c, addr_family = AF_INET; + fd_set read_fds, write_fds; + struct timeval *tvp, tv; + struct in_addr addr4; + struct in6_addr addr6; + +#ifdef USE_WINSOCK + WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK); + WSADATA wsaData; + WSAStartup(wVersionRequested, &wsaData); +#endif + + status = ares_library_init(ARES_LIB_INIT_ALL); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status)); + return 1; + } + + while ((c = ares_getopt(argc,argv,"dt:h")) != -1) + { + switch (c) + { + case 'd': +#ifdef WATT32 + dbug_init(); +#endif + break; + case 't': + if (!strcasecmp(optarg,"a")) + addr_family = AF_INET; + else if (!strcasecmp(optarg,"aaaa")) + addr_family = AF_INET6; + else + usage(); + break; + case 'h': + default: + usage(); + break; + } + } + + argc -= optind; + argv += optind; + if (argc < 1) + usage(); + + status = ares_init(&channel); + if (status != ARES_SUCCESS) + { + fprintf(stderr, "ares_init: %s\n", ares_strerror(status)); + return 1; + } + + /* Initiate the queries, one per command-line argument. */ + for ( ; *argv; argv++) + { + if (ares_inet_pton(AF_INET, *argv, &addr4) == 1) + { + ares_gethostbyaddr(channel, &addr4, sizeof(addr4), AF_INET, callback, + *argv); + } + else if (ares_inet_pton(AF_INET6, *argv, &addr6) == 1) + { + ares_gethostbyaddr(channel, &addr6, sizeof(addr6), AF_INET6, callback, + *argv); + } + else + { + ares_gethostbyname(channel, *argv, addr_family, callback, *argv); + } + } + + /* Wait for all queries to complete. */ + for (;;) + { + FD_ZERO(&read_fds); + FD_ZERO(&write_fds); + nfds = ares_fds(channel, &read_fds, &write_fds); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + select(nfds, &read_fds, &write_fds, NULL, tvp); + ares_process(channel, &read_fds, &write_fds); + } + + ares_destroy(channel); + + ares_library_cleanup(); + +#ifdef USE_WINSOCK + WSACleanup(); +#endif + + return 0; +} + +static void callback(void *arg, int status, int timeouts, struct hostent *host) +{ + char **p; + + (void)timeouts; + + if (status != ARES_SUCCESS) + { + fprintf(stderr, "%s: %s\n", (char *) arg, ares_strerror(status)); + return; + } + + for (p = host->h_addr_list; *p; p++) + { + char addr_buf[46] = "??"; + + ares_inet_ntop(host->h_addrtype, *p, addr_buf, sizeof(addr_buf)); + printf("%-32s\t%s", host->h_name, addr_buf); +#if 0 + if (host->h_aliases[0]) + { + int i; + + printf (", Aliases: "); + for (i = 0; host->h_aliases[i]; i++) + printf("%s ", host->h_aliases[i]); + } +#endif + puts(""); + } +} + +static void usage(void) +{ + fprintf(stderr, "usage: ahost [-t {a|aaaa}] {host|addr} ...\n"); + exit(1); +} @@ -0,0 +1,494 @@ +/* $Id: ares.h,v 1.72 2009-11-23 12:03:32 yangtse Exp $ */ + +/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES__H +#define ARES__H + +#include "ares_version.h" /* c-ares version defines */ +#include "ares_build.h" /* c-ares build definitions */ +#include "ares_rules.h" /* c-ares rules enforcement */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && \ + !defined(WIN32) && !defined(__SYMBIAN32__) +# define WIN32 +#endif + +#include <sys/types.h> + +/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish + libc5-based Linux systems. Only include it on system that are known to + require it! */ +#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \ + defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) +#include <sys/select.h> +#endif +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) +#include <sys/bsdskt.h> +#endif + +#if defined(WATT32) +# include <netinet/in.h> +# include <sys/socket.h> +# include <tcp.h> +#elif defined(WIN32) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock2.h> +# include <ws2tcpip.h> +#else +# include <sys/socket.h> +# include <netinet/in.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* +** c-ares external API function linkage decorations. +*/ + +#if !defined(CARES_STATICLIB) && \ + (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)) + /* __declspec function decoration for Win32 and Symbian DLL's */ +# if defined(CARES_BUILDING_LIBRARY) +# define CARES_EXTERN __declspec(dllexport) +# else +# define CARES_EXTERN __declspec(dllimport) +# endif +#else + /* visibility function decoration for other cases */ +# if !defined(CARES_SYMBOL_HIDING) || \ + defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__) +# define CARES_EXTERN +# else +# define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN +# endif +#endif + + +#define ARES_SUCCESS 0 + +/* Server error codes (ARES_ENODATA indicates no relevant answer) */ +#define ARES_ENODATA 1 +#define ARES_EFORMERR 2 +#define ARES_ESERVFAIL 3 +#define ARES_ENOTFOUND 4 +#define ARES_ENOTIMP 5 +#define ARES_EREFUSED 6 + +/* Locally generated error codes */ +#define ARES_EBADQUERY 7 +#define ARES_EBADNAME 8 +#define ARES_EBADFAMILY 9 +#define ARES_EBADRESP 10 +#define ARES_ECONNREFUSED 11 +#define ARES_ETIMEOUT 12 +#define ARES_EOF 13 +#define ARES_EFILE 14 +#define ARES_ENOMEM 15 +#define ARES_EDESTRUCTION 16 +#define ARES_EBADSTR 17 + +/* ares_getnameinfo error codes */ +#define ARES_EBADFLAGS 18 + +/* ares_getaddrinfo error codes */ +#define ARES_ENONAME 19 +#define ARES_EBADHINTS 20 + +/* Uninitialized library error code */ +#define ARES_ENOTINITIALIZED 21 /* introduced in 1.7.0 */ + +/* ares_library_init error codes */ +#define ARES_ELOADIPHLPAPI 22 /* introduced in 1.7.0 */ +#define ARES_EADDRGETNETWORKPARAMS 23 /* introduced in 1.7.0 */ + +/* More error codes */ +#define ARES_ECANCELLED 24 /* introduced in 1.7.0 */ + +/* Flag values */ +#define ARES_FLAG_USEVC (1 << 0) +#define ARES_FLAG_PRIMARY (1 << 1) +#define ARES_FLAG_IGNTC (1 << 2) +#define ARES_FLAG_NORECURSE (1 << 3) +#define ARES_FLAG_STAYOPEN (1 << 4) +#define ARES_FLAG_NOSEARCH (1 << 5) +#define ARES_FLAG_NOALIASES (1 << 6) +#define ARES_FLAG_NOCHECKRESP (1 << 7) + +/* Option mask values */ +#define ARES_OPT_FLAGS (1 << 0) +#define ARES_OPT_TIMEOUT (1 << 1) +#define ARES_OPT_TRIES (1 << 2) +#define ARES_OPT_NDOTS (1 << 3) +#define ARES_OPT_UDP_PORT (1 << 4) +#define ARES_OPT_TCP_PORT (1 << 5) +#define ARES_OPT_SERVERS (1 << 6) +#define ARES_OPT_DOMAINS (1 << 7) +#define ARES_OPT_LOOKUPS (1 << 8) +#define ARES_OPT_SOCK_STATE_CB (1 << 9) +#define ARES_OPT_SORTLIST (1 << 10) +#define ARES_OPT_SOCK_SNDBUF (1 << 11) +#define ARES_OPT_SOCK_RCVBUF (1 << 12) +#define ARES_OPT_TIMEOUTMS (1 << 13) +#define ARES_OPT_ROTATE (1 << 14) + +/* Nameinfo flag values */ +#define ARES_NI_NOFQDN (1 << 0) +#define ARES_NI_NUMERICHOST (1 << 1) +#define ARES_NI_NAMEREQD (1 << 2) +#define ARES_NI_NUMERICSERV (1 << 3) +#define ARES_NI_DGRAM (1 << 4) +#define ARES_NI_TCP 0 +#define ARES_NI_UDP ARES_NI_DGRAM +#define ARES_NI_SCTP (1 << 5) +#define ARES_NI_DCCP (1 << 6) +#define ARES_NI_NUMERICSCOPE (1 << 7) +#define ARES_NI_LOOKUPHOST (1 << 8) +#define ARES_NI_LOOKUPSERVICE (1 << 9) +/* Reserved for future use */ +#define ARES_NI_IDN (1 << 10) +#define ARES_NI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12) + +/* Addrinfo flag values */ +#define ARES_AI_CANONNAME (1 << 0) +#define ARES_AI_NUMERICHOST (1 << 1) +#define ARES_AI_PASSIVE (1 << 2) +#define ARES_AI_NUMERICSERV (1 << 3) +#define ARES_AI_V4MAPPED (1 << 4) +#define ARES_AI_ALL (1 << 5) +#define ARES_AI_ADDRCONFIG (1 << 6) +/* Reserved for future use */ +#define ARES_AI_IDN (1 << 10) +#define ARES_AI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12) +#define ARES_AI_CANONIDN (1 << 13) + +#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \ + ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \ + ARES_AI_ADDRCONFIG) +#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this + many sockets */ +#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) +#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ + ARES_GETSOCK_MAXNUM))) + +/* c-ares library initialization flag values */ +#define ARES_LIB_INIT_NONE (0) +#define ARES_LIB_INIT_WIN32 (1 << 0) +#define ARES_LIB_INIT_ALL (ARES_LIB_INIT_WIN32) + + +/* + * Typedef our socket type + */ + +#ifndef ares_socket_typedef +#ifdef WIN32 +typedef SOCKET ares_socket_t; +#define ARES_SOCKET_BAD INVALID_SOCKET +#else +typedef int ares_socket_t; +#define ARES_SOCKET_BAD -1 +#endif +#define ares_socket_typedef +#endif /* ares_socket_typedef */ + +typedef void (*ares_sock_state_cb)(void *data, + ares_socket_t socket_fd, + int readable, + int writable); + +struct apattern; + +/* NOTE about the ares_options struct to users and developers. + + This struct will remain looking like this. It will not be extended nor + shrunk in future releases, but all new options will be set by ares_set_*() + options instead of with the ares_init_options() function. + + Eventually (in a galaxy far far away), all options will be settable by + ares_set_*() options and the ares_init_options() function will become + deprecated. + + When new options are added to c-ares, they are not added to this + struct. And they are not "saved" with the ares_save_options() function but + instead we encourage the use of the ares_dup() function. Needless to say, + if you add config options to c-ares you need to make sure ares_dup() + duplicates this new option. + + */ +struct ares_options { + int flags; + int timeout; /* in seconds or milliseconds, depending on options */ + int tries; + int ndots; + unsigned short udp_port; + unsigned short tcp_port; + int socket_send_buffer_size; + int socket_receive_buffer_size; + struct in_addr *servers; + int nservers; + char **domains; + int ndomains; + char *lookups; + ares_sock_state_cb sock_state_cb; + void *sock_state_cb_data; + struct apattern *sortlist; + int nsort; +}; + +struct hostent; +struct timeval; +struct sockaddr; +struct ares_channeldata; + +typedef struct ares_channeldata *ares_channel; + +typedef void (*ares_callback)(void *arg, + int status, + int timeouts, + unsigned char *abuf, + int alen); + +typedef void (*ares_host_callback)(void *arg, + int status, + int timeouts, + struct hostent *hostent); + +typedef void (*ares_nameinfo_callback)(void *arg, + int status, + int timeouts, + char *node, + char *service); + +typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd, + int type, + void *data); + +CARES_EXTERN int ares_library_init(int flags); + +CARES_EXTERN void ares_library_cleanup(void); + +CARES_EXTERN const char *ares_version(int *version); + +CARES_EXTERN int ares_init(ares_channel *channelptr); + +CARES_EXTERN int ares_init_options(ares_channel *channelptr, + struct ares_options *options, + int optmask); + +CARES_EXTERN int ares_save_options(ares_channel channel, + struct ares_options *options, + int *optmask); + +CARES_EXTERN void ares_destroy_options(struct ares_options *options); + +CARES_EXTERN int ares_dup(ares_channel *dest, + ares_channel src); + +CARES_EXTERN void ares_destroy(ares_channel channel); + +CARES_EXTERN void ares_cancel(ares_channel channel); + +CARES_EXTERN void ares_set_socket_callback(ares_channel channel, + ares_sock_create_callback callback, + void *user_data); + +CARES_EXTERN void ares_send(ares_channel channel, + const unsigned char *qbuf, + int qlen, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_query(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_search(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_gethostbyname(ares_channel channel, + const char *name, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN int ares_gethostbyname_file(ares_channel channel, + const char *name, + int family, + struct hostent **host); + +CARES_EXTERN void ares_gethostbyaddr(ares_channel channel, + const void *addr, + int addrlen, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN void ares_getnameinfo(ares_channel channel, + const struct sockaddr *sa, + ares_socklen_t salen, + int flags, + ares_nameinfo_callback callback, + void *arg); + +CARES_EXTERN int ares_fds(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN int ares_getsock(ares_channel channel, + int *socks, + int numsocks); + +CARES_EXTERN struct timeval *ares_timeout(ares_channel channel, + struct timeval *maxtv, + struct timeval *tv); + +CARES_EXTERN void ares_process(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN void ares_process_fd(ares_channel channel, + ares_socket_t read_fd, + ares_socket_t write_fd); + +CARES_EXTERN int ares_mkquery(const char *name, + int dnsclass, + int type, + unsigned short id, + int rd, + unsigned char **buf, + int *buflen); + +CARES_EXTERN int ares_expand_name(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + char **s, + long *enclen); + +CARES_EXTERN int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen); + +/* + * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr + * struct below when ares itself was built, but many apps would use this + * private version since the header checked a HAVE_* define for it. Starting + * with 1.7.0 we always declare and use our own to stop relying on the + * system's one. + */ +struct ares_in6_addr { + union { + unsigned char _S6_u8[16]; + } _S6_un; +}; + +struct ares_addrttl { + struct in_addr ipaddr; + int ttl; +}; + +struct ares_addr6ttl { + struct ares_in6_addr ip6addr; + int ttl; +}; + +struct ares_srv_reply { + struct ares_srv_reply *next; + char *host; + unsigned short priority; + unsigned short weight; + unsigned short port; +}; + +struct ares_txt_reply { + struct ares_txt_reply *next; + unsigned char *txt; + size_t length; /* length excludes null termination */ +}; + +/* +** Parse the buffer, starting at *abuf and of length alen bytes, previously +** obtained from an ares_search call. Put the results in *host, if nonnull. +** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with +** their TTLs in that array, and set *naddrttls to the number of addresses +** so written. +*/ + +CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addrttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addr6ttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf, + int alen, + const void *addr, + int addrlen, + int family, + struct hostent **host); + +CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf, + int alen, + struct hostent **host); + +CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf, + int alen, + struct ares_srv_reply** srv_out); + +CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf, + int alen, + struct ares_txt_reply** txt_out); + +CARES_EXTERN void ares_free_string(void *str); + +CARES_EXTERN void ares_free_hostent(struct hostent *host); + +CARES_EXTERN void ares_free_data(void *dataptr); + +CARES_EXTERN const char *ares_strerror(int code); + +#ifdef __cplusplus +} +#endif + +#endif /* ARES__H */ diff --git a/ares__close_sockets.c b/ares__close_sockets.c new file mode 100644 index 0000000..ef8910d --- /dev/null +++ b/ares__close_sockets.c @@ -0,0 +1,67 @@ +/* $Id: ares__close_sockets.c,v 1.10 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +void ares__close_sockets(ares_channel channel, struct server_state *server) +{ + struct send_request *sendreq; + + /* Free all pending output buffers. */ + while (server->qhead) + { + /* Advance server->qhead; pull out query as we go. */ + sendreq = server->qhead; + server->qhead = sendreq->next; + if (sendreq->data_storage != NULL) + free(sendreq->data_storage); + free(sendreq); + } + server->qtail = NULL; + + /* Reset any existing input buffer. */ + if (server->tcp_buffer) + free(server->tcp_buffer); + server->tcp_buffer = NULL; + server->tcp_lenbuf_pos = 0; + + /* Reset brokenness */ + server->is_broken = 0; + + /* Close the TCP and UDP sockets. */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0); + sclose(server->tcp_socket); + server->tcp_socket = ARES_SOCKET_BAD; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + } + if (server->udp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0); + sclose(server->udp_socket); + server->udp_socket = ARES_SOCKET_BAD; + } +} diff --git a/ares__get_hostent.c b/ares__get_hostent.c new file mode 100644 index 0000000..335f763 --- /dev/null +++ b/ares__get_hostent.c @@ -0,0 +1,264 @@ +/* $Id: ares__get_hostent.c,v 1.24 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +int ares__get_hostent(FILE *fp, int family, struct hostent **host) +{ + char *line = NULL, *p, *q, **alias; + char *txtaddr, *txthost, *txtalias; + int status; + size_t addrlen, linesize, naliases; + struct ares_addr addr; + struct hostent *hostent = NULL; + + *host = NULL; /* Assume failure */ + + /* Validate family */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + return ARES_EBADFAMILY; + } + + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + + /* Trim line comment. */ + p = line; + while (*p && (*p != '#')) + p++; + *p = '\0'; + + /* Trim trailing whitespace. */ + q = p - 1; + while ((q >= line) && ISSPACE(*q)) + q--; + *++q = '\0'; + + /* Skip leading whitespace. */ + p = line; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if empty. */ + continue; + + /* Pointer to start of IPv4 or IPv6 address part. */ + txtaddr = p; + + /* Advance past address part. */ + while (*p && !ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Null terminate address part. */ + *p = '\0'; + + /* Advance to host name */ + p++; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Pointer to start of host name. */ + txthost = p; + + /* Advance past host name. */ + while (*p && !ISSPACE(*p)) + p++; + + /* Pointer to start of first alias. */ + txtalias = NULL; + if (*p) + { + q = p + 1; + while (*q && ISSPACE(*q)) + q++; + if (*q) + txtalias = q; + } + + /* Null terminate host name. */ + *p = '\0'; + + /* find out number of aliases. */ + naliases = 0; + if (txtalias) + { + p = txtalias; + while (*p) + { + while (*p && !ISSPACE(*p)) + p++; + while (*p && ISSPACE(*p)) + p++; + naliases++; + } + } + + /* Convert address string to network address for the requested family. */ + addrlen = 0; + addr.family = AF_UNSPEC; + addr.addrV4.s_addr = INADDR_NONE; + if ((family == AF_INET) || (family == AF_UNSPEC)) + { + addr.addrV4.s_addr = inet_addr(txtaddr); + if (addr.addrV4.s_addr != INADDR_NONE) + { + /* Actual network address family and length. */ + addr.family = AF_INET; + addrlen = sizeof(struct in_addr); + } + } + if ((family == AF_INET6) || ((family == AF_UNSPEC) && (!addrlen))) + { + if (ares_inet_pton(AF_INET6, txtaddr, &addr.addrV6) > 0) + { + /* Actual network address family and length. */ + addr.family = AF_INET6; + addrlen = sizeof(struct in6_addr); + } + } + if (!addrlen) + /* Ignore line if invalid address string for the requested family. */ + continue; + + /* + ** Actual address family possible values are AF_INET and AF_INET6 only. + */ + + /* Allocate memory for the hostent structure. */ + hostent = malloc(sizeof(struct hostent)); + if (!hostent) + break; + + /* Initialize fields for out of memory condition. */ + hostent->h_aliases = NULL; + hostent->h_addr_list = NULL; + + /* Copy official host name. */ + hostent->h_name = strdup(txthost); + if (!hostent->h_name) + break; + + /* Copy network address. */ + hostent->h_addr_list = malloc(2 * sizeof(char *)); + if (!hostent->h_addr_list) + break; + hostent->h_addr_list[1] = NULL; + hostent->h_addr_list[0] = malloc(addrlen); + if (!hostent->h_addr_list[0]) + break; + if (addr.family == AF_INET) + memcpy(hostent->h_addr_list[0], &addr.addrV4, sizeof(struct in_addr)); + else + memcpy(hostent->h_addr_list[0], &addr.addrV6, sizeof(struct in6_addr)); + + /* Copy aliases. */ + hostent->h_aliases = malloc((naliases + 1) * sizeof(char *)); + if (!hostent->h_aliases) + break; + alias = hostent->h_aliases; + while (naliases) + *(alias + naliases--) = NULL; + *alias = NULL; + while (txtalias) + { + p = txtalias; + while (*p && !ISSPACE(*p)) + p++; + q = p; + while (*q && ISSPACE(*q)) + q++; + *p = '\0'; + if ((*alias = strdup(txtalias)) == NULL) + break; + alias++; + txtalias = *q ? q : NULL; + } + if (txtalias) + /* Alias memory allocation failure. */ + break; + + /* Copy actual network address family and length. */ + hostent->h_addrtype = addr.family; + hostent->h_length = (int)addrlen; + + /* Free line buffer. */ + free(line); + + /* Return hostent successfully */ + *host = hostent; + return ARES_SUCCESS; + + } + + /* If allocated, free line buffer. */ + if (line) + free(line); + + if (status == ARES_SUCCESS) + { + /* Memory allocation failure; clean up. */ + if (hostent) + { + if (hostent->h_name) + free((char *) hostent->h_name); + if (hostent->h_aliases) + { + for (alias = hostent->h_aliases; *alias; alias++) + free(*alias); + free(hostent->h_aliases); + } + if (hostent->h_addr_list) + { + if (hostent->h_addr_list[0]) + free(hostent->h_addr_list[0]); + free(hostent->h_addr_list); + } + free(hostent); + } + return ARES_ENOMEM; + } + + return status; +} diff --git a/ares__read_line.c b/ares__read_line.c new file mode 100644 index 0000000..270e0e3 --- /dev/null +++ b/ares__read_line.c @@ -0,0 +1,67 @@ +/* $Id: ares__read_line.c,v 1.14 2009-11-10 18:41:03 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_private.h" + +/* This is an internal function. Its contract is to read a line from + * a file into a dynamically allocated buffer, zeroing the trailing + * newline if there is one. The calling routine may call + * ares__read_line multiple times with the same buf and bufsize + * pointers; *buf will be reallocated and *bufsize adjusted as + * appropriate. The initial value of *buf should be NULL. After the + * calling routine is done reading lines, it should free *buf. + */ +int ares__read_line(FILE *fp, char **buf, size_t *bufsize) +{ + char *newbuf; + size_t offset = 0; + size_t len; + + if (*buf == NULL) + { + *buf = malloc(128); + if (!*buf) + return ARES_ENOMEM; + *bufsize = 128; + } + + for (;;) + { + if (!fgets(*buf + offset, (int)(*bufsize - offset), fp)) + return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF; + len = offset + strlen(*buf + offset); + if ((*buf)[len - 1] == '\n') + { + (*buf)[len - 1] = 0; + break; + } + offset = len; + + /* Allocate more space. */ + newbuf = realloc(*buf, *bufsize * 2); + if (!newbuf) + return ARES_ENOMEM; + *buf = newbuf; + *bufsize *= 2; + } + return ARES_SUCCESS; +} diff --git a/ares__timeval.c b/ares__timeval.c new file mode 100644 index 0000000..2957350 --- /dev/null +++ b/ares__timeval.c @@ -0,0 +1,112 @@ +/* $Id: ares__timeval.c,v 1.6 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2008 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares.h" +#include "ares_private.h" + +#if defined(WIN32) && !defined(MSDOS) + +struct timeval ares__tvnow(void) +{ + /* + ** GetTickCount() is available on _all_ Windows versions from W95 up + ** to nowadays. Returns milliseconds elapsed since last system boot, + ** increases monotonically and wraps once 49.7 days have elapsed. + */ + struct timeval now; + DWORD milliseconds = GetTickCount(); + now.tv_sec = milliseconds / 1000; + now.tv_usec = (milliseconds % 1000) * 1000; + return now; +} + +#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC) + +struct timeval ares__tvnow(void) +{ + /* + ** clock_gettime() is granted to be increased monotonically when the + ** monotonic clock is queried. Time starting point is unspecified, it + ** could be the system start-up time, the Epoch, or something else, + ** in any case the time starting point does not change once that the + ** system has started up. + */ + struct timeval now; + struct timespec tsnow; + if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) { + now.tv_sec = tsnow.tv_sec; + now.tv_usec = tsnow.tv_nsec / 1000; + } + /* + ** Even when the configure process has truly detected monotonic clock + ** availability, it might happen that it is not actually available at + ** run-time. When this occurs simply fallback to other time source. + */ +#ifdef HAVE_GETTIMEOFDAY + else + (void)gettimeofday(&now, NULL); +#else + else { + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + } +#endif + return now; +} + +#elif defined(HAVE_GETTIMEOFDAY) + +struct timeval ares__tvnow(void) +{ + /* + ** gettimeofday() is not granted to be increased monotonically, due to + ** clock drifting and external source time synchronization it can jump + ** forward or backward in time. + */ + struct timeval now; + (void)gettimeofday(&now, NULL); + return now; +} + +#else + +struct timeval ares__tvnow(void) +{ + /* + ** time() returns the value of time in seconds since the Epoch. + */ + struct timeval now; + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + return now; +} + +#endif + +#if 0 /* Not used */ +/* + * Make sure that the first argument is the more recent time, as otherwise + * we'll get a weird negative time-diff back... + * + * Returns: the time difference in number of milliseconds. + */ +long ares__tvdiff(struct timeval newer, struct timeval older) +{ + return (newer.tv_sec-older.tv_sec)*1000+ + (newer.tv_usec-older.tv_usec)/1000; +} +#endif + diff --git a/ares_build.h.dist b/ares_build.h.dist new file mode 100644 index 0000000..bbbef1b --- /dev/null +++ b/ares_build.h.dist @@ -0,0 +1,253 @@ +#ifndef __CARES_BUILD_H +#define __CARES_BUILD_H + +/* $Id: ares_build.h.dist,v 1.9 2009-05-12 01:57:53 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * See file ares_build.h.in, run configure, and forget that this file + * exists it is only used for non-configure systems. + * But you can keep reading if you want ;-) + * + */ + +/* ================================================================ */ +/* NOTES FOR NON-CONFIGURE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * If you think that something actually needs to be changed, adjusted + * or fixed in this file, then, report it on the c-ares development + * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * Try to keep one section per platform, compiler and architecture, + * otherwise, if an existing section is reused for a different one and + * later on the original is adjusted, probably the piggybacking one can + * be adversely changed. + * + * In order to differentiate between platforms/compilers/architectures + * use only compiler built in predefined preprocessor symbols. + * + * This header file shall only export symbols which are 'cares' or 'CARES' + * prefixed, otherwise public name space would be polluted. + * + * NOTE 2: + * ------- + * + * Right now you might be staring at file ares_build.h.dist or ares_build.h, + * this is due to the following reason: file ares_build.h.dist is renamed + * to ares_build.h when the c-ares source code distribution archive file is + * created. + * + * File ares_build.h.dist is not included in the distribution archive. + * File ares_build.h is not present in the CVS tree. + * + * The distributed ares_build.h file is only intended to be used on systems + * which can not run the also distributed configure script. + * + * On systems capable of running the configure script, the configure process + * will overwrite the distributed ares_build.h file with one that is suitable + * and specific to the library being configured and built, which is generated + * from the ares_build.h.in template file. + * + * If you check out from CVS on a non-configure platform, you must run the + * appropriate buildconf* script to set up ares_build.h and other local files. + * + */ + +/* ================================================================ */ +/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */ +/* ================================================================ */ + +#ifdef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined +#endif + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined +#endif + +#ifdef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined +#endif + +/* ================================================================ */ +/* EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY */ +/* ================================================================ */ + +#if defined(__DJGPP__) || defined(__GO32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SALFORDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__BORLANDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__TURBOC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__WATCOMC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__POCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__LCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SYMBIAN32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MWERKS__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(_WIN32_WCE) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MINGW32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__VMS) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__OS400__) +# if defined(__ILEC400__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__MVS__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__370__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(TPF) +# define CARES_SIZEOF_LONG 8 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP MSVC THE PENULTIMATE ENTRY */ +/* ===================================== */ + +#elif defined(_MSC_VER) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP GENERIC GCC THE LAST ENTRY */ +/* ===================================== */ + +#elif defined(__GNUC__) +# if defined(__i386__) || defined(__ppc__) +# define CARES_SIZEOF_LONG 4 +# elif defined(__x86_64__) || defined(__ppc64__) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 + +#else +# error "Unknown non-configure build target!" + Error Compilation_aborted_Unknown_non_configure_build_target +#endif + +/* CARES_PULL_SYS_TYPES_H is defined above when inclusion of header file */ +/* sys/types.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_TYPES_H +# include <sys/types.h> +#endif + +/* CARES_PULL_SYS_SOCKET_H is defined above when inclusion of header file */ +/* sys/socket.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_SOCKET_H +# include <sys/socket.h> +#endif + +/* Data type definition of ares_socklen_t. */ + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T + typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t; +#endif + +#endif /* __CARES_BUILD_H */ diff --git a/ares_build.h.in b/ares_build.h.in new file mode 100644 index 0000000..e140eae --- /dev/null +++ b/ares_build.h.in @@ -0,0 +1,111 @@ +#ifndef __CARES_BUILD_H +#define __CARES_BUILD_H + +/* $Id: ares_build.h.in,v 1.2 2009-04-29 14:05:21 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * If you think that something actually needs to be changed, adjusted + * or fixed in this file, then, report it on the c-ares development + * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * This header file shall only export symbols which are 'cares' or 'CARES' + * prefixed, otherwise public name space would be polluted. + * + * NOTE 2: + * ------- + * + * Right now you might be staring at file ares_build.h.in or ares_build.h, + * this is due to the following reason: + * + * On systems capable of running the configure script, the configure process + * will overwrite the distributed ares_build.h file with one that is suitable + * and specific to the library being configured and built, which is generated + * from the ares_build.h.in template file. + * + */ + +/* ================================================================ */ +/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */ +/* ================================================================ */ + +#ifdef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined +#endif + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined +#endif + +#ifdef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined +#endif + +/* ================================================================ */ +/* EXTERNAL INTERFACE SETTINGS FOR CONFIGURE CAPABLE SYSTEMS ONLY */ +/* ================================================================ */ + +/* Configure process defines this to 1 when it finds out that system */ +/* header file ws2tcpip.h must be included by the external interface. */ +#undef CARES_PULL_WS2TCPIP_H +#ifdef CARES_PULL_WS2TCPIP_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock2.h> +# include <ws2tcpip.h> +#endif + +/* Configure process defines this to 1 when it finds out that system */ +/* header file sys/types.h must be included by the external interface. */ +#undef CARES_PULL_SYS_TYPES_H +#ifdef CARES_PULL_SYS_TYPES_H +# include <sys/types.h> +#endif + +/* Configure process defines this to 1 when it finds out that system */ +/* header file sys/socket.h must be included by the external interface. */ +#undef CARES_PULL_SYS_SOCKET_H +#ifdef CARES_PULL_SYS_SOCKET_H +# include <sys/socket.h> +#endif + +/* The size of `long', as computed by sizeof. */ +#undef CARES_SIZEOF_LONG + +/* Integral data type used for ares_socklen_t. */ +#undef CARES_TYPEOF_ARES_SOCKLEN_T + +/* The size of `ares_socklen_t', as computed by sizeof. */ +#undef CARES_SIZEOF_ARES_SOCKLEN_T + +/* Data type definition of ares_socklen_t. */ +typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t; + +#endif /* __CARES_BUILD_H */ diff --git a/ares_cancel.3 b/ares_cancel.3 new file mode 100644 index 0000000..a37853d --- /dev/null +++ b/ares_cancel.3 @@ -0,0 +1,44 @@ +.\" $Id: ares_cancel.3,v 1.6 2009-11-23 00:57:50 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_CANCEL 3 "31 March 2004" +.SH NAME +ares_cancel \- Cancel a resolve +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_cancel(ares_channel \fIchannel\fP) +.fi +.SH DESCRIPTION +The \fBares_cancel\fP function cancels all lookups/requests made on the the +name service channel identified by \fIchannel\fP. \fBares_cancel\fP invokes +the callbacks for each pending query on the channel, passing a status of +.BR ARES_ECANCELLED . +These calls give the callbacks a chance to clean up any state which +might have been stored in their arguments. +.SH SEE ALSO +.BR ares_init (3) +.BR ares_destroy (3) +.SH NOTES +This function was added in c-ares 1.2.0 + +c-ares 1.6.0 and earlier pass a status of +.BR ARES_ETIMEOUT +instead of +.BR ARES_ECANCELLED . +.SH AUTHOR +Dirk Manske diff --git a/ares_cancel.c b/ares_cancel.c new file mode 100644 index 0000000..9478085 --- /dev/null +++ b/ares_cancel.c @@ -0,0 +1,64 @@ +/* $Id: ares_cancel.c,v 1.12 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2004 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +/* + * ares_cancel() cancels all ongoing requests/resolves that might be going on + * on the given channel. It does NOT kill the channel, use ares_destroy() for + * that. + */ +void ares_cancel(ares_channel channel) +{ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + int i; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + if (!(channel->flags & ARES_FLAG_STAYOPEN)) + { + if (channel->servers) + { + for (i = 0; i < channel->nservers; i++) + ares__close_sockets(channel, &channel->servers[i]); + } + } +} diff --git a/ares_data.c b/ares_data.c new file mode 100644 index 0000000..1ad66a6 --- /dev/null +++ b/ares_data.c @@ -0,0 +1,143 @@ +/* $Id: ares_data.c,v 1.2 2009-11-20 09:06:33 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +#include "ares_setup.h" + +#include <stddef.h> + +#include "ares.h" +#include "ares_data.h" +#include "ares_private.h" + + +/* +** ares_free_data() - c-ares external API function. +** +** This function must be used by the application to free data memory that +** has been internally allocated by some c-ares function and for which a +** pointer has already been returned to the calling application. The list +** of c-ares functions returning pointers that must be free'ed using this +** function is: +** +** ares_parse_srv_reply() +** ares_parse_txt_reply() +*/ + +void ares_free_data(void *dataptr) +{ + struct ares_data *ptr; + + if (!dataptr) + return; + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + + if (ptr->mark != ARES_DATATYPE_MARK) + return; + + switch (ptr->type) + { + case ARES_DATATYPE_SRV_REPLY: + + if (ptr->data.srv_reply.next) + ares_free_data(ptr->data.srv_reply.next); + if (ptr->data.srv_reply.host) + free(ptr->data.srv_reply.host); + break; + + case ARES_DATATYPE_TXT_REPLY: + + if (ptr->data.txt_reply.next) + ares_free_data(ptr->data.txt_reply.next); + if (ptr->data.txt_reply.txt) + free(ptr->data.txt_reply.txt); + break; + + default: + return; + } + + free(ptr); +} + + +/* +** ares_malloc_data() - c-ares internal helper function. +** +** This function allocates memory for a c-ares private ares_data struct +** for the specified ares_datatype, initializes c-ares private fields +** and zero initializes those which later might be used from the public +** API. It returns an interior pointer which can be passed by c-ares +** functions to the calling application, and that must be free'ed using +** c-ares external API function ares_free_data(). +*/ + +void *ares_malloc_data(ares_datatype type) +{ + struct ares_data *ptr; + + ptr = malloc(sizeof(struct ares_data)); + if (!ptr) + return NULL; + + switch (type) + { + case ARES_DATATYPE_SRV_REPLY: + ptr->data.srv_reply.next = NULL; + ptr->data.srv_reply.host = NULL; + ptr->data.srv_reply.priority = 0; + ptr->data.srv_reply.weight = 0; + ptr->data.srv_reply.port = 0; + break; + + case ARES_DATATYPE_TXT_REPLY: + ptr->data.txt_reply.next = NULL; + ptr->data.txt_reply.txt = NULL; + ptr->data.txt_reply.length = 0; + break; + + default: + free(ptr); + return NULL; + } + + ptr->mark = ARES_DATATYPE_MARK; + ptr->type = type; + + return &ptr->data; +} + + +/* +** ares_get_datatype() - c-ares internal helper function. +** +** This function returns the ares_datatype of the data stored in a +** private ares_data struct when given the public API pointer. +*/ + +ares_datatype ares_get_datatype(void * dataptr) +{ + struct ares_data *ptr; + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + + if (ptr->mark == ARES_DATATYPE_MARK) + return ptr->type; + + return ARES_DATATYPE_UNKNOWN; +} diff --git a/ares_data.h b/ares_data.h new file mode 100644 index 0000000..18794e3 --- /dev/null +++ b/ares_data.h @@ -0,0 +1,62 @@ +/* $Id: ares_data.h,v 1.2 2009-11-23 12:03:33 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +typedef enum { + ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */ + ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */ + ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */ +#if 0 + ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */ + ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */ + ARES_DATATYPE_HOSTENT, /* struct hostent */ + ARES_DATATYPE_OPTIONS, /* struct ares_options */ +#endif + ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */ +} ares_datatype; + +#define ARES_DATATYPE_MARK 0xbead + +/* + * ares_data struct definition is internal to c-ares and shall not + * be exposed by the public API in order to allow future changes + * and extensions to it without breaking ABI. This will be used + * internally by c-ares as the container of multiple types of data + * dynamically allocated for which a reference will be returned + * to the calling application. + * + * c-ares API functions returning a pointer to c-ares internally + * allocated data will actually be returning an interior pointer + * into this ares_data struct. + * + * All this is 'invisible' to the calling application, the only + * requirement is that this kind of data must be free'ed by the + * calling application using ares_free_data() with the pointer + * it has received from a previous c-ares function call. + */ + +struct ares_data { + ares_datatype type; /* Actual data type identifier. */ + unsigned int mark; /* Private ares_data signature. */ + union { + struct ares_txt_reply txt_reply; + struct ares_srv_reply srv_reply; + } data; +}; + +void *ares_malloc_data(ares_datatype type); + +ares_datatype ares_get_datatype(void * dataptr); diff --git a/ares_destroy.3 b/ares_destroy.3 new file mode 100644 index 0000000..1d8a4df --- /dev/null +++ b/ares_destroy.3 @@ -0,0 +1,44 @@ +.\" $Id: ares_destroy.3,v 1.4 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_DESTROY 3 "7 December 2004" +.SH NAME +ares_destroy \- Destroy a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_destroy(ares_channel \fIchannel\fP) +.fi +.SH DESCRIPTION +The +.B ares_destroy +function destroys the name service channel identified by +.IR channel , +freeing all memory and closing all sockets used by the channel. +.B ares_destroy +invokes the callbacks for each pending query on the channel, passing a +status of +.BR ARES_EDESTRUCTION . +These calls give the callbacks a chance to clean up any state which +might have been stored in their arguments. +.SH SEE ALSO +.BR ares_init (3), +.BR ares_cancel (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_destroy.c b/ares_destroy.c new file mode 100644 index 0000000..0044a71 --- /dev/null +++ b/ares_destroy.c @@ -0,0 +1,93 @@ +/* $Id: ares_destroy.c,v 1.14 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_destroy_options(struct ares_options *options) +{ + int i; + + free(options->servers); + for (i = 0; i < options->ndomains; i++) + free(options->domains[i]); + free(options->domains); + if(options->sortlist) + free(options->sortlist); + free(options->lookups); +} + +void ares_destroy(ares_channel channel) +{ + int i; + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + if (!channel) + return; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + + if (channel->servers) { + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + ares__close_sockets(channel, server); + assert(ares__is_list_empty(&(server->queries_to_server))); + } + free(channel->servers); + } + + if (channel->domains) { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + + if(channel->sortlist) + free(channel->sortlist); + + if (channel->lookups) + free(channel->lookups); + + free(channel); +} diff --git a/ares_destroy_options.3 b/ares_destroy_options.3 new file mode 100644 index 0000000..f251551 --- /dev/null +++ b/ares_destroy_options.3 @@ -0,0 +1,39 @@ +.\" $Id: ares_destroy_options.3,v 1.1 2007-06-02 19:32:30 bagder Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_DESTROY_OPTIONS 3 "1 June 2007" +.SH NAME +ares_destroy_options \- Destroy options initialized with ares_save_options +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_destroy_options(struct ares_options *\fIoptions\fP) +.fi +.SH DESCRIPTION +The +.B ares_destroy_options +function destroys the options struct identified by +.IR options , +freeing all memory allocated by ares_save_options. + +.SH SEE ALSO +.BR ares_save_options (3), +.BR ares_init_options (3) +.SH AUTHOR +Brad House +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_dns.h b/ares_dns.h new file mode 100644 index 0000000..c0a9dda --- /dev/null +++ b/ares_dns.h @@ -0,0 +1,91 @@ +/* $Id: ares_dns.h,v 1.8 2007-02-16 14:22:08 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES__DNS_H +#define ARES__DNS_H + +#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1]) +#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \ + ((p)[2] << 8) | (p)[3]) + +#define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[1] = (unsigned char)((v) & 0xff))) +#define DNS__SET32BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 24) & 0xff)), \ + ((p)[1] = (unsigned char)(((v) >> 16) & 0xff)), \ + ((p)[2] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[3] = (unsigned char)((v) & 0xff))) + +#if 0 +/* we cannot use this approach on systems where we can't access 16/32 bit + data on un-aligned addresses */ +#define DNS__16BIT(p) ntohs(*(unsigned short*)(p)) +#define DNS__32BIT(p) ntohl(*(unsigned long*)(p)) +#define DNS__SET16BIT(p, v) *(unsigned short*)(p) = htons(v) +#define DNS__SET32BIT(p, v) *(unsigned long*)(p) = htonl(v) +#endif + +/* Macros for parsing a DNS header */ +#define DNS_HEADER_QID(h) DNS__16BIT(h) +#define DNS_HEADER_QR(h) (((h)[2] >> 7) & 0x1) +#define DNS_HEADER_OPCODE(h) (((h)[2] >> 3) & 0xf) +#define DNS_HEADER_AA(h) (((h)[2] >> 2) & 0x1) +#define DNS_HEADER_TC(h) (((h)[2] >> 1) & 0x1) +#define DNS_HEADER_RD(h) ((h)[2] & 0x1) +#define DNS_HEADER_RA(h) (((h)[3] >> 7) & 0x1) +#define DNS_HEADER_Z(h) (((h)[3] >> 4) & 0x7) +#define DNS_HEADER_RCODE(h) ((h)[3] & 0xf) +#define DNS_HEADER_QDCOUNT(h) DNS__16BIT((h) + 4) +#define DNS_HEADER_ANCOUNT(h) DNS__16BIT((h) + 6) +#define DNS_HEADER_NSCOUNT(h) DNS__16BIT((h) + 8) +#define DNS_HEADER_ARCOUNT(h) DNS__16BIT((h) + 10) + +/* Macros for constructing a DNS header */ +#define DNS_HEADER_SET_QID(h, v) DNS__SET16BIT(h, v) +#define DNS_HEADER_SET_QR(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_OPCODE(h, v) ((h)[2] |= (unsigned char)(((v) & 0xf) << 3)) +#define DNS_HEADER_SET_AA(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 2)) +#define DNS_HEADER_SET_TC(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 1)) +#define DNS_HEADER_SET_RD(h, v) ((h)[2] |= (unsigned char)((v) & 0x1)) +#define DNS_HEADER_SET_RA(h, v) ((h)[3] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_Z(h, v) ((h)[3] |= (unsigned char)(((v) & 0x7) << 4)) +#define DNS_HEADER_SET_RCODE(h, v) ((h)[3] |= (unsigned char)((v) & 0xf)) +#define DNS_HEADER_SET_QDCOUNT(h, v) DNS__SET16BIT((h) + 4, v) +#define DNS_HEADER_SET_ANCOUNT(h, v) DNS__SET16BIT((h) + 6, v) +#define DNS_HEADER_SET_NSCOUNT(h, v) DNS__SET16BIT((h) + 8, v) +#define DNS_HEADER_SET_ARCOUNT(h, v) DNS__SET16BIT((h) + 10, v) + +/* Macros for parsing the fixed part of a DNS question */ +#define DNS_QUESTION_TYPE(q) DNS__16BIT(q) +#define DNS_QUESTION_CLASS(q) DNS__16BIT((q) + 2) + +/* Macros for constructing the fixed part of a DNS question */ +#define DNS_QUESTION_SET_TYPE(q, v) DNS__SET16BIT(q, v) +#define DNS_QUESTION_SET_CLASS(q, v) DNS__SET16BIT((q) + 2, v) + +/* Macros for parsing the fixed part of a DNS resource record */ +#define DNS_RR_TYPE(r) DNS__16BIT(r) +#define DNS_RR_CLASS(r) DNS__16BIT((r) + 2) +#define DNS_RR_TTL(r) DNS__32BIT((r) + 4) +#define DNS_RR_LEN(r) DNS__16BIT((r) + 8) + +/* Macros for constructing the fixed part of a DNS resource record */ +#define DNS_RR_SET_TYPE(r) DNS__SET16BIT(r, v) +#define DNS_RR_SET_CLASS(r) DNS__SET16BIT((r) + 2, v) +#define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v) +#define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v) + +#endif /* ARES__DNS_H */ diff --git a/ares_dup.3 b/ares_dup.3 new file mode 100644 index 0000000..eda8a3f --- /dev/null +++ b/ares_dup.3 @@ -0,0 +1,44 @@ +.\" $Id: ares_dup.3,v 1.3 2009-11-23 00:57:50 yangtse Exp $ +.\" +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_DUP 3 "26 May 2009" +.SH NAME +ares_dup \- Duplicate a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_dup(ares_channel *\fIdest\fP, ares_channel \fIsource\fP) +.fi +.SH DESCRIPTION +The \fBares_dup(3)\fP function duplicates an existing communications channel +for name service lookups. If it returns successfully, \fBares_dup(3)\fP will +set the variable pointed to by \fIdest\fP to a handle used to identify the +name service channel. The caller should invoke \fIares_destroy(3)\fP on the +handle when the channel is no longer needed. + +The \fBares_dup_options\fP function also initializes a name service channel, +with additional options set exactly as the \fIsource\fP channel has them +configured. +.SH SEE ALSO +.BR ares_destroy(3), +.BR ares_init(3), +.BR ares_library_init(3) +.SH AVAILABILITY +ares_dup(3) was added in c-ares 1.6.0 +.SH AUTHOR +Daniel Stenberg + diff --git a/ares_expand_name.3 b/ares_expand_name.3 new file mode 100644 index 0000000..1c64e65 --- /dev/null +++ b/ares_expand_name.3 @@ -0,0 +1,64 @@ +.\" $Id: ares_expand_name.3,v 1.4 2009-11-20 14:15:05 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_EXPAND_NAME 3 "20 Nov 2009" +.SH NAME +ares_expand_name \- Expand a DNS-encoded domain name +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_expand_name(const unsigned char *\fIencoded\fP, +.B const unsigned char *\fIabuf\fP, int \fIalen\fP, char **\fIs\fP, +.B long *\fIenclen\fP) +.fi +.SH DESCRIPTION +The +.B ares_expand_name +function converts a DNS-encoded domain name to a dot-separated C +string. The argument +.I encoded +gives the beginning of the encoded domain name, and the arguments +.I abuf +and +.I alen +give the containing message buffer (necessary for the processing of +indirection pointers within the encoded domain name). The result is +placed in a NUL-terminated allocated buffer, a pointer to which is +stored in the variable pointed to by +.IR s . +The length of the encoded name is stored in the variable pointed to by +.I enclen +so that the caller can advance past the encoded domain name to read +further data in the message. +.SH RETURN VALUES +.B ares_expand_name +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +Expansion of the encoded name succeeded. +.TP 15 +.B ARES_EBADNAME +The encoded domain name was malformed and could not be expanded. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_mkquery (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_expand_name.c b/ares_expand_name.c new file mode 100644 index 0000000..75e88e8 --- /dev/null +++ b/ares_expand_name.c @@ -0,0 +1,190 @@ +/* $Id: ares_expand_name.c,v 1.20 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen); + +/* Expand an RFC1035-encoded domain name given by encoded. The + * containing message is given by abuf and alen. The result given by + * *s, which is set to a NUL-terminated allocated buffer. *enclen is + * set to the length of the encoded name (not the length of the + * expanded name; the goal is to tell the caller how many bytes to + * move forward to get past the encoded name). + * + * In the simple case, an encoded name is a series of labels, each + * composed of a one-byte length (limited to values between 0 and 63 + * inclusive) followed by the label contents. The name is terminated + * by a zero-length label. + * + * In the more complicated case, a label may be terminated by an + * indirection pointer, specified by two bytes with the high bits of + * the first byte (corresponding to INDIR_MASK) set to 11. With the + * two high bits of the first byte stripped off, the indirection + * pointer gives an offset from the beginning of the containing + * message with more labels to decode. Indirection can happen an + * arbitrary number of times, so we have to detect loops. + * + * Since the expanded name uses '.' as a label separator, we use + * backslashes to escape periods or backslashes in the expanded name. + */ + +int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf, + int alen, char **s, long *enclen) +{ + int len, indir = 0; + char *q; + const unsigned char *p; + + len = name_length(encoded, abuf, alen); + if (len < 0) + return ARES_EBADNAME; + + *s = malloc(((size_t)len) + 1); + if (!*s) + return ARES_ENOMEM; + q = *s; + + if (len == 0) { + /* RFC2181 says this should be ".": the root of the DNS tree. + * Since this function strips trailing dots though, it becomes "" + */ + q[0] = '\0'; + *enclen = 1; /* the caller should move one byte to get past this */ + return ARES_SUCCESS; + } + + /* No error-checking necessary; it was all done by name_length(). */ + p = encoded; + while (*p) + { + if ((*p & INDIR_MASK) == INDIR_MASK) + { + if (!indir) + { + *enclen = p + 2 - encoded; + indir = 1; + } + p = abuf + ((*p & ~INDIR_MASK) << 8 | *(p + 1)); + } + else + { + len = *p; + p++; + while (len--) + { + if (*p == '.' || *p == '\\') + *q++ = '\\'; + *q++ = *p; + p++; + } + *q++ = '.'; + } + } + if (!indir) + *enclen = p + 1 - encoded; + + /* Nuke the trailing period if we wrote one. */ + if (q > *s) + *(q - 1) = 0; + else + *q = 0; /* zero terminate */ + + return ARES_SUCCESS; +} + +/* Return the length of the expansion of an encoded domain name, or + * -1 if the encoding is invalid. + */ +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen) +{ + int n = 0, offset, indir = 0; + + /* Allow the caller to pass us abuf + alen and have us check for it. */ + if (encoded == abuf + alen) + return -1; + + while (*encoded) + { + if ((*encoded & INDIR_MASK) == INDIR_MASK) + { + /* Check the offset and go there. */ + if (encoded + 1 >= abuf + alen) + return -1; + offset = (*encoded & ~INDIR_MASK) << 8 | *(encoded + 1); + if (offset >= alen) + return -1; + encoded = abuf + offset; + + /* If we've seen more indirects than the message length, + * then there's a loop. + */ + if (++indir > alen) + return -1; + } + else + { + offset = *encoded; + if (encoded + offset + 1 >= abuf + alen) + return -1; + encoded++; + while (offset--) + { + n += (*encoded == '.' || *encoded == '\\') ? 2 : 1; + encoded++; + } + n++; + } + } + + /* If there were any labels at all, then the number of dots is one + * less than the number of labels, so subtract one. + */ + return (n) ? n - 1 : n; +} + +/* Like ares_expand_name but returns EBADRESP in case of invalid input. */ +int ares__expand_name_for_response(const unsigned char *encoded, + const unsigned char *abuf, int alen, + char **s, long *enclen) +{ + int status = ares_expand_name(encoded, abuf, alen, s, enclen); + if (status == ARES_EBADNAME) + status = ARES_EBADRESP; + return status; +} diff --git a/ares_expand_string.3 b/ares_expand_string.3 new file mode 100644 index 0000000..375e5d0 --- /dev/null +++ b/ares_expand_string.3 @@ -0,0 +1,62 @@ +.\" $Id: ares_expand_string.3,v 1.3 2009-11-20 14:15:06 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_EXPAND_NAME 3 "20 Nov 2009" +.SH NAME +ares_expand_string \- Expand a length encoded string +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_expand_string(const unsigned char *\fIencoded\fP, +.B const unsigned char *\fIabuf\fP, int \fIalen\fP, unsigned char **\fIs\fP, +.B long *\fIenclen\fP) +.fi +.SH DESCRIPTION +The +.B ares_expand_string +function converts a length encoded string to a NUL-terminated C +string. The argument +.I encoded +gives the beginning of the encoded string, and the arguments +.I abuf +and +.I alen +give the containing message buffer (necessary for the processing of +indirection pointers within the encoded domain name). The result is +placed in a NUL-terminated allocated buffer, a pointer to which is +stored in the variable pointed to by +.IR s . +The length of the encoded string is stored in the variable pointed to by +.I enclen +so that the caller can advance past the encoded string to read +further data in the message. +.SH RETURN VALUES +.B ares_expand_string +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +Expansion of the encoded string succeeded. +.TP 15 +.B ARES_EBADSTR +The encoded string was malformed and could not be expanded. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_free_string (3) +.SH AUTHOR +Dominick Meglio diff --git a/ares_expand_string.c b/ares_expand_string.c new file mode 100644 index 0000000..c72bb62 --- /dev/null +++ b/ares_expand_string.c @@ -0,0 +1,72 @@ +/* $Id: ares_expand_string.c,v 1.10 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif + +#include <string.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +/* Simply decodes a length-encoded character string. The first byte of the + * input is the length of the string to be returned and the bytes thereafter + * are the characters of the string. The returned result will be NULL + * terminated. + */ +int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen) +{ + unsigned char *q; + long len; + if (encoded == abuf+alen) + return ARES_EBADSTR; + + len = *encoded; + if (encoded+len+1 > abuf+alen) + return ARES_EBADSTR; + + encoded++; + + *s = malloc(len+1); + if (*s == NULL) + return ARES_ENOMEM; + q = *s; + strncpy((char *)q, (char *)encoded, len); + q[len] = '\0'; + + *s = q; + + *enclen = len+1; + + return ARES_SUCCESS; +} + diff --git a/ares_fds.3 b/ares_fds.3 new file mode 100644 index 0000000..44b0fae --- /dev/null +++ b/ares_fds.3 @@ -0,0 +1,62 @@ +.\" $Id: ares_fds.3,v 1.2 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_FDS 3 "23 July 1998" +.SH NAME +ares_fds \- Get file descriptors to select on for name service +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_fds(ares_channel \fIchannel\fP, fd_set *\fIread_fds\fP, +.B fd_set *\fIwrite_fds\fP) +.fi +.SH DESCRIPTION +The +.B ares_fds +function retrieves the set of file descriptors which the calling +application should select on for reading and writing for the +processing of name service queries pending on the name service channel +identified by +.IR channel . +File descriptors will be set in the file descriptor sets pointed to by +.I read_fds +and +.I write_fds +as appropriate. File descriptors already set in +.I read_fds +and +.I write_fds +will remain set; initialization of the file descriptor sets +(using +.BR FD_ZERO ) +is the responsibility of the caller. +.SH RETURN VALUES +.B ares_fds +returns one greater than the number of the highest socket set in either +.I read_fds +or +.IR write_fds . +If no queries are active, +.B ares_fds +will return 0. +.SH SEE ALSO +.BR ares_timeout (3), +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_fds.c b/ares_fds.c new file mode 100644 index 0000000..6ffe9c7 --- /dev/null +++ b/ares_fds.c @@ -0,0 +1,63 @@ +/* $Id: ares_fds.c,v 1.12 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) +{ + struct server_state *server; + ares_socket_t nfds; + int i; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + nfds = 0; + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->udp_socket, read_fds); + if (server->udp_socket >= nfds) + nfds = server->udp_socket + 1; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->tcp_socket, read_fds); + if (server->qhead) + FD_SET(server->tcp_socket, write_fds); + if (server->tcp_socket >= nfds) + nfds = server->tcp_socket + 1; + } + } + return (int)nfds; +} diff --git a/ares_free_data.3 b/ares_free_data.3 new file mode 100644 index 0000000..f0655c6 --- /dev/null +++ b/ares_free_data.3 @@ -0,0 +1,60 @@ +.\" $Id: ares_free_data.3,v 1.3 2009-11-23 12:03:33 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_FREE_DATA 3 "23 Nov 2009" +.SH NAME +ares_free_data \- Free data allocated by several c-ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_data(void *\fIdataptr\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +.PP +The +.B ares_free_data(3) +function frees one or more data structures allocated and returned +by several c-ares functions. Specifically the data returned by the +following list of functions must be deallocated using this function. +.TP 5 +.B ares_parse_srv_reply(3) +When used to free the data returned by ares_parse_srv_reply(3) this +will free the whole linked list of ares_srv_reply structures returned +by ares_parse_srv_reply(3), along with any additional storage +associated with those structures. +.TP +.B ares_parse_txt_reply(3) +When used to free the data returned by ares_parse_txt_reply(3) this +will free the whole linked list of ares_txt_reply structures returned +by ares_parse_txt_reply(3), along with any additional storage +associated with those structures. +.SH RETURN VALUE +The ares_free_data() function does not return a value. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0. +.SH SEE ALSO +.BR ares_parse_srv_reply(3), +.BR ares_parse_txt_reply(3) +.SH AUTHOR +Yang Tse +.PP +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2009 by Daniel Stenberg. diff --git a/ares_free_hostent.3 b/ares_free_hostent.3 new file mode 100644 index 0000000..1d3a7ee --- /dev/null +++ b/ares_free_hostent.3 @@ -0,0 +1,46 @@ +.\" $Id: ares_free_hostent.3,v 1.4 2007-07-14 23:01:49 bagder Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_FREE_HOSTENT 3 "23 July 1998" +.SH NAME +ares_free_hostent \- Free host structure allocated by ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_hostent(struct hostent *\fIhost\fP) +.fi +.SH DESCRIPTION +The +.I ares_free_hostent +function frees a +.B struct hostent +allocated by one of the functions \fIares_parse_a_reply(3)\fP, +\fIares_parse_aaaa_reply(3)\fP, or \fIares_parse_ptr_reply(3)\fP. +.SH NOTES +It is not necessary (and is not correct) to free the host structure passed to +the callback functions for \fIares_gethostbyname(3)\fP or +\fIares_gethostbyaddr(3)\fP. c-ares will automatically free such host +structures when the callback returns. +.SH SEE ALSO +.BR ares_parse_a_reply (3), +.BR ares_parse_aaaa_reply (3), +.BR ares_parse_ptr_reply (3), +.BR ares_parse_ns_reply (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_free_hostent.c b/ares_free_hostent.c new file mode 100644 index 0000000..c0794ee --- /dev/null +++ b/ares_free_hostent.c @@ -0,0 +1,40 @@ +/* $Id: ares_free_hostent.c,v 1.12 2009-11-09 12:56:50 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdlib.h> + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#include "ares.h" +#include "ares_private.h" /* for memdebug */ + +void ares_free_hostent(struct hostent *host) +{ + char **p; + + free((char *)(host->h_name)); + for (p = host->h_aliases; *p; p++) + free(*p); + free(host->h_aliases); + free(host->h_addr_list[0]); /* no matter if there is one or many entries, + there is only one malloc for all of them */ + free(host->h_addr_list); + free(host); +} diff --git a/ares_free_string.3 b/ares_free_string.3 new file mode 100644 index 0000000..c0bdd02 --- /dev/null +++ b/ares_free_string.3 @@ -0,0 +1,36 @@ +.\" $Id: ares_free_string.3,v 1.4 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 2000 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_FREE_STRING 3 "4 February 2004" +.SH NAME +ares_free_string \- Free strings allocated by ares functions +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_free_string(void *\fIstr\fP) +.fi +.SH DESCRIPTION +The +.I ares_free_string +function frees a string allocated by an ares function. +.SH SEE ALSO +.BR ares_mkquery (3) +.BR ares_expand_string (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 2000 by the Massachusetts Institute of Technology. diff --git a/ares_free_string.c b/ares_free_string.c new file mode 100644 index 0000000..38f98f9 --- /dev/null +++ b/ares_free_string.c @@ -0,0 +1,26 @@ +/* $Id: ares_free_string.c,v 1.7 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 2000 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_free_string(void *str) +{ + free(str); +} diff --git a/ares_gethostbyaddr.3 b/ares_gethostbyaddr.3 new file mode 100644 index 0000000..4ad5c2f --- /dev/null +++ b/ares_gethostbyaddr.3 @@ -0,0 +1,102 @@ +.\" $Id: ares_gethostbyaddr.3,v 1.3 2007-09-28 14:46:51 sesse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_GETHOSTBYADDR 3 "24 July 1998" +.SH NAME +ares_gethostbyaddr \- Initiate a host query by address +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_host_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, struct hostent *\fIhostent\fP) +.PP +.B void ares_gethostbyaddr(ares_channel \fIchannel\fP, const void *\fIaddr\fP, +.B int \fIaddrlen\fP, int \fIfamily\fP, ares_host_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyaddr +function initiates a host query by address on the name service channel +identified by +.IR channel . +The parameters +.I addr +and +.I addrlen +give the address as a series of bytes, and +.I family +gives the type of address. When the query is complete or has failed, the ares +library will invoke \fIcallback\fP. Completion or failure of the query may +happen immediately, or may happen during a later call to +\fIares_process(3)\fP, \fIares_destroy(3)\fP or \fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_gethostbyaddr +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to look up addresses of type +.IR family . +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I hostent +points to a +.B struct hostent +containing the name of the host returned by the query. The callback +need not and should not attempt to free the memory pointed to by +.IR hostent ; +the ares library will free it when the callback returns. If the query +did not complete successfully, +.I hostent +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_gethostbyname (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_gethostbyaddr.c b/ares_gethostbyaddr.c new file mode 100644 index 0000000..732a031 --- /dev/null +++ b/ares_gethostbyaddr.c @@ -0,0 +1,291 @@ +/* $Id: ares_gethostbyaddr.c,v 1.35 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct addr_query { + /* Arguments passed to ares_gethostbyaddr() */ + ares_channel channel; + struct ares_addr addr; + ares_host_callback callback; + void *arg; + + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct addr_query *aquery); +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host); +static int file_lookup(struct ares_addr *addr, struct hostent **host); +static void ptr_rr_name(char *name, const struct ares_addr *addr); + +void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen, + int family, ares_host_callback callback, void *arg) +{ + struct addr_query *aquery; + + if (family != AF_INET && family != AF_INET6) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if ((family == AF_INET && addrlen != sizeof(struct in_addr)) || + (family == AF_INET6 && addrlen != sizeof(struct in6_addr))) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + aquery = malloc(sizeof(struct addr_query)); + if (!aquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + aquery->channel = channel; + if (family == AF_INET) + memcpy(&aquery->addr.addrV4, addr, sizeof(struct in_addr)); + else + memcpy(&aquery->addr.addrV6, addr, sizeof(struct in6_addr)); + aquery->addr.family = family; + aquery->callback = callback; + aquery->arg = arg; + aquery->remaining_lookups = channel->lookups; + aquery->timeouts = 0; + + next_lookup(aquery); +} + +static void next_lookup(struct addr_query *aquery) +{ + const char *p; + char name[128]; + int status; + struct hostent *host; + + for (p = aquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + ptr_rr_name(name, &aquery->addr); + aquery->remaining_lookups = p + 1; + ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback, + aquery); + return; + case 'f': + status = file_lookup(&aquery->addr, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_aquery(aquery, status, host); + return; + } + break; + } + } + end_aquery(aquery, ARES_ENOTFOUND, NULL); +} + +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct addr_query *aquery = (struct addr_query *) arg; + struct hostent *host; + size_t addrlen; + + aquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (aquery->addr.family == AF_INET) + { + addrlen = sizeof(struct in_addr); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV4, + (int)addrlen, AF_INET, &host); + } + else + { + addrlen = sizeof(struct in6_addr); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV6, + (int)addrlen, AF_INET6, &host); + } + end_aquery(aquery, status, host); + } + else if (status == ARES_EDESTRUCTION) + end_aquery(aquery, status, NULL); + else + next_lookup(aquery); +} + +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host) +{ + aquery->callback(aquery->arg, status, aquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(aquery); +} + +static int file_lookup(struct ares_addr *addr, struct hostent **host) +{ + FILE *fp; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + if (IS_NT()) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts) + == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, addr->family, host)) == ARES_SUCCESS) + { + if (addr->family != (*host)->h_addrtype) + { + ares_free_hostent(*host); + continue; + } + if (addr->family == AF_INET) + { + if (memcmp((*host)->h_addr, &addr->addrV4, sizeof(struct in_addr)) == 0) + break; + } + else if (addr->family == AF_INET6) + { + if (memcmp((*host)->h_addr, &addr->addrV6, sizeof(struct in6_addr)) == 0) + break; + } + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void ptr_rr_name(char *name, const struct ares_addr *addr) +{ + if (addr->family == AF_INET) + { + unsigned long laddr = ntohl(addr->addrV4.s_addr); + int a1 = (int)((laddr >> 24) & 0xff); + int a2 = (int)((laddr >> 16) & 0xff); + int a3 = (int)((laddr >> 8) & 0xff); + int a4 = (int)(laddr & 0xff); + sprintf(name, "%d.%d.%d.%d.in-addr.arpa", a4, a3, a2, a1); + } + else + { + unsigned char *bytes = (unsigned char *)&addr->addrV6.s6_addr; + /* There are too many arguments to do this in one line using + * minimally C89-compliant compilers */ + sprintf(name, + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.", + bytes[15]&0xf, bytes[15] >> 4, bytes[14]&0xf, bytes[14] >> 4, + bytes[13]&0xf, bytes[13] >> 4, bytes[12]&0xf, bytes[12] >> 4, + bytes[11]&0xf, bytes[11] >> 4, bytes[10]&0xf, bytes[10] >> 4, + bytes[9]&0xf, bytes[9] >> 4, bytes[8]&0xf, bytes[8] >> 4); + sprintf(name+strlen(name), + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa", + bytes[7]&0xf, bytes[7] >> 4, bytes[6]&0xf, bytes[6] >> 4, + bytes[5]&0xf, bytes[5] >> 4, bytes[4]&0xf, bytes[4] >> 4, + bytes[3]&0xf, bytes[3] >> 4, bytes[2]&0xf, bytes[2] >> 4, + bytes[1]&0xf, bytes[1] >> 4, bytes[0]&0xf, bytes[0] >> 4); + } +} diff --git a/ares_gethostbyname.3 b/ares_gethostbyname.3 new file mode 100644 index 0000000..89c7448 --- /dev/null +++ b/ares_gethostbyname.3 @@ -0,0 +1,106 @@ +.\" $Id: ares_gethostbyname.3,v 1.3 2007-09-28 14:46:51 sesse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_GETHOSTBYNAME 3 "25 July 1998" +.SH NAME +ares_gethostbyname \- Initiate a host query by name +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_host_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, struct hostent *\fIhostent\fP) +.PP +.B void ares_gethostbyname(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIfamily\fP, ares_host_callback \fIcallback\fP, void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyname +function initiates a host query by name on the name service channel +identified by +.IR channel . +The parameter +.I name +gives the hostname as a NUL-terminated C string, and +.I family +gives the desired type of address for the resulting host entry. When the +query is complete or has failed, the ares library will invoke \fIcallback\fP. +Completion or failure of the query may happen immediately, or may happen +during a later call to \fIares_process(3)\fP, \fIares_destroy(3)\fP or +\fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_gethostbyname +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to find addresses of type +.IR family . +.TP 19 +.B ARES_EBADNAME +The hostname +.B name +is composed entirely of numbers and periods, but is not a valid +representation of an Internet address. +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I hostent +points to a +.B struct hostent +containing the name of the host returned by the query. The callback +need not and should not attempt to free the memory pointed to by +.IR hostent ; +the ares library will free it when the callback returns. If the query +did not complete successfully, +.I hostent +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_gethostbyaddr (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_gethostbyname.c b/ares_gethostbyname.c new file mode 100644 index 0000000..fc66c6f --- /dev/null +++ b/ares_gethostbyname.c @@ -0,0 +1,511 @@ +/* $Id: ares_gethostbyname.c,v 1.50 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "bitncmp.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct host_query { + /* Arguments passed to ares_gethostbyname() */ + ares_channel channel; + char *name; + ares_host_callback callback; + void *arg; + int sent_family; /* this family is what was is being used */ + int want_family; /* this family is what is asked for in the API */ + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct host_query *hquery, int status_code); +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host); +static int fake_hostent(const char *name, int family, + ares_host_callback callback, void *arg); +static int file_lookup(const char *name, int family, struct hostent **host); +static void sort_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static void sort6_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, int nsort); +static int get6_address_index(const struct in6_addr *addr, + const struct apattern *sortlist, int nsort); + +void ares_gethostbyname(ares_channel channel, const char *name, int family, + ares_host_callback callback, void *arg) +{ + struct host_query *hquery; + + /* Right now we only know how to look up Internet addresses - and unspec + means try both basically. */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if (fake_hostent(name, family, callback, arg)) + return; + + /* Allocate and fill in the host query structure. */ + hquery = malloc(sizeof(struct host_query)); + if (!hquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->channel = channel; + hquery->name = strdup(name); + hquery->want_family = family; + hquery->sent_family = -1; /* nothing is sent yet */ + if (!hquery->name) { + free(hquery); + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->callback = callback; + hquery->arg = arg; + hquery->remaining_lookups = channel->lookups; + hquery->timeouts = 0; + + /* Start performing lookups according to channel->lookups. */ + next_lookup(hquery, ARES_ECONNREFUSED /* initial error code */); +} + +static void next_lookup(struct host_query *hquery, int status_code) +{ + const char *p; + struct hostent *host; + int status = status_code; + + for (p = hquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + /* DNS lookup */ + hquery->remaining_lookups = p + 1; + if ((hquery->want_family == AF_INET6) || + (hquery->want_family == AF_UNSPEC)) { + /* if inet6 or unspec, start out with AAAA */ + hquery->sent_family = AF_INET6; + ares_search(hquery->channel, hquery->name, C_IN, T_AAAA, + host_callback, hquery); + } + else { + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, + hquery); + } + return; + + case 'f': + /* Host file lookup */ + status = file_lookup(hquery->name, hquery->want_family, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_hquery(hquery, status, host); + return; + } + status = status_code; /* Use original status code */ + break; + } + } + end_hquery(hquery, status, NULL); +} + +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct host_query *hquery = (struct host_query *) arg; + ares_channel channel = hquery->channel; + struct hostent *host = NULL; + + hquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (hquery->sent_family == AF_INET) + { + status = ares_parse_a_reply(abuf, alen, &host, NULL, NULL); + if (host && channel->nsort) + sort_addresses(host, channel->sortlist, channel->nsort); + } + else if (hquery->sent_family == AF_INET6) + { + status = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL); + if (status == ARES_ENODATA || status == ARES_EBADRESP) { + /* The query returned something but either there were no AAAA records (e.g. just CNAME) + or the response was malformed. Try looking up A instead. + We should possibly limit this attempt-next logic to AF_UNSPEC lookups only. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, + host_callback, hquery); + return; + } + if (host && channel->nsort) + sort6_addresses(host, channel->sortlist, channel->nsort); + } + end_hquery(hquery, status, host); + } + else if ((status == ARES_ENODATA || status == ARES_EBADRESP || status == ARES_ETIMEOUT) && hquery->sent_family == AF_INET6) + { + /* The AAAA query yielded no useful result. Now look up an A instead. + We should possibly limit this attempt-next logic to AF_UNSPEC lookups only. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, + hquery); + } + else if (status == ARES_EDESTRUCTION) + end_hquery(hquery, status, NULL); + else + next_lookup(hquery, status); +} + +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host) +{ + hquery->callback(hquery->arg, status, hquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(hquery->name); + free(hquery); +} + +/* If the name looks like an IP address, fake up a host entry, end the + * query immediately, and return true. Otherwise return false. + */ +static int fake_hostent(const char *name, int family, ares_host_callback callback, + void *arg) +{ + struct hostent hostent; + char *aliases[1] = { NULL }; + char *addrs[2]; + int result = 0; + struct in_addr in; + struct in6_addr in6; + + if (family == AF_INET || family == AF_INET6) + { + /* It only looks like an IP address if it's all numbers and dots. */ + int numdots = 0, valid = 1; + const char *p; + for (p = name; *p; p++) + { + if (!ISDIGIT(*p) && *p != '.') { + valid = 0; + break; + } else if (*p == '.') { + numdots++; + } + } + + /* if we don't have 3 dots, it is illegal + * (although inet_addr doesn't think so). + */ + if (numdots != 3 || !valid) + result = 0; + else + result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1); + + if (result) + family = AF_INET; + } + if (family == AF_INET6) + result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1); + + if (!result) + return 0; + + if (family == AF_INET) + { + hostent.h_length = (int)sizeof(struct in_addr); + addrs[0] = (char *)∈ + } + else if (family == AF_INET6) + { + hostent.h_length = (int)sizeof(struct in6_addr); + addrs[0] = (char *)&in6; + } + /* Duplicate the name, to avoid a constness violation. */ + hostent.h_name = strdup(name); + if (!hostent.h_name) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return 1; + } + + /* Fill in the rest of the host structure and terminate the query. */ + addrs[1] = NULL; + hostent.h_aliases = aliases; + hostent.h_addrtype = family; + hostent.h_addr_list = addrs; + callback(arg, ARES_SUCCESS, 0, &hostent); + + free((char *)(hostent.h_name)); + return 1; +} + +/* This is an API method */ +int ares_gethostbyname_file(ares_channel channel, const char *name, + int family, struct hostent **host) +{ + int result; + + /* We only take the channel to ensure that ares_init() been called. */ + if(channel == NULL) + { + /* Anything will do, really. This seems fine, and is consistent with + other error cases. */ + *host = NULL; + return ARES_ENOTFOUND; + } + + /* Just chain to the internal implementation we use here; it's exactly + * what we want. + */ + result = file_lookup(name, family, host); + if(result != ARES_SUCCESS) + { + /* We guarantee a NULL hostent on failure. */ + *host = NULL; + } + return result; +} + +static int file_lookup(const char *name, int family, struct hostent **host) +{ + FILE *fp; + char **alias; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + if (IS_NT()) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts) + == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS) + { + if (strcasecmp((*host)->h_name, name) == 0) + break; + for (alias = (*host)->h_aliases; *alias; alias++) + { + if (strcasecmp(*alias, name) == 0) + break; + } + if (*alias) + break; + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void sort_addresses(struct hostent *host, const struct apattern *sortlist, + int nsort) +{ + struct in_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr)); + ind1 = get_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr)); + ind2 = get_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET) + continue; + if (sortlist[i].type == PATTERN_MASK) + { + if ((addr->s_addr & sortlist[i].mask.addr4.s_addr) + == sortlist[i].addrV4.s_addr) + break; + } + else + { + if (!ares_bitncmp(&addr->s_addr, &sortlist[i].addrV4.s_addr, + sortlist[i].mask.bits)) + break; + } + } + return i; +} + +static void sort6_addresses(struct hostent *host, const struct apattern *sortlist, + int nsort) +{ + struct in6_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct in6_addr)); + ind1 = get6_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct in6_addr)); + ind2 = get6_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in6_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in6_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get6_address_index(const struct in6_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET6) + continue; + if (!ares_bitncmp(&addr->s6_addr, &sortlist[i].addrV6.s6_addr, sortlist[i].mask.bits)) + break; + } + return i; +} diff --git a/ares_gethostbyname_file.3 b/ares_gethostbyname_file.3 new file mode 100644 index 0000000..43d8886 --- /dev/null +++ b/ares_gethostbyname_file.3 @@ -0,0 +1,84 @@ +.\" $Id: ares_gethostbyname_file.3,v 1.2 2009-11-23 00:57:51 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_GETHOSTBYNAME 3 "25 July 1998" +.SH NAME +ares_gethostbyname_file \- Lookup a name in the system's hosts file +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_gethostbyname_file(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIfamily\fP, struct hostent **host) +.fi +.SH DESCRIPTION +The +.B ares_gethostbyname_file +function performs a host lookup by name against the system's hosts file (or equivalent local hostname database). +The +.IR channel +parameter is required, but no asynchronous queries are performed. Instead, the +lookup is done via the same mechanism used to perform 'f' lookups +(see the +.I lookups +options field in \fIares_init_options(3)\fP). +The parameter +.I name +gives the hostname as a NUL-terminated C string, and +.I family +gives the desired type of address for the resulting host entry. +.PP +The return value indicates whether the query succeeded and, if not, how it +failed. It may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully and +.I host +now points to the result (and must be freed with \fIares_free_hostent(3)\fP). +.TP 19 +.B ARES_ENOTFOUND +The hostname +.I name +was not found. +.TP 19 +.B ARES_EFILE +There was a file I/O error while performing the lookup. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.PP +On successful completion of the query, the pointer pointed to by +.I host +points to a +.B struct hostent +containing the address of the host returned by the lookup. The user must +free the memory pointed to by +.IR host +when finished with it by calling \fIares_free_hostent(3)\fP. If the lookup did +not complete successfully, +.I host +will be +.BR NULL . +.SH AVAILABILITY +Added in c-ares 1.5.4 +.SH SEE ALSO +.BR ares_gethostbyname (3), +.BR ares_free_hostent (3), +.BR ares_init_options (3) +.SH AUTHOR +Brad Spencer +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_getnameinfo.3 b/ares_getnameinfo.3 new file mode 100644 index 0000000..55d18c7 --- /dev/null +++ b/ares_getnameinfo.3 @@ -0,0 +1,150 @@ +.\" $Id: ares_getnameinfo.3,v 1.4 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 2005 by Dominick Meglio. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_GETNAMEINFO 3 "1 May 2009" +.SH NAME +ares_getnameinfo \- Address-to-nodename translation in protocol-independent manner +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_nameinfo_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, char *\fInode\fP, char *\fIservice\fP) +.PP +.B void ares_getnameinfo(ares_channel \fIchannel\fP, const struct sockaddr *\fIsa\fP, +.B ares_socklen_t \fIsalen\fP, int \fIflags\fP, ares_nameinfo_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_getnameinfo +function is defined for protocol-independent address translation. The function +is a combination of \fIares_gethostbyaddr(3)\fP and \fIgetservbyport(3)\fP. The function will +translate the address either by executing a host query on the name service channel +identified by +.IR channel +or it will attempt to resolve it locally if possible. +The parameters +.I sa +and +.I len +give the address as a sockaddr structure, and +.I flags +gives the options that the function will use. Valid flags are listed below: +.TP 19 +.B ARES_NI_NOFQDN +Only the nodename portion of the FQDN is returned for local hosts. +.TP 19 +.B ARES_NI_NUMERICHOST +The numeric form of the hostname is returned rather than the name. +.TP 19 +.B ARES_NI_NAMEREQD +An error is returned if the hostname cannot be found in the DNS. +.TP 19 +.B ARES_NI_NUMERICSERV +The numeric form of the service is returned rather than the name. +.TP 19 +.B ARES_NI_TCP +The service name is to be looked up for the TCP protocol. +.TP 19 +.B ARES_NI_UDP +The service name is to be looked up for the UDP protocol. +.TP 19 +.B ARES_NI_SCTP +The service name is to be looked up for the SCTP protocol. +.TP 19 +.B ARES_NI_DCCP +The service name is to be looked up for the DCCP protocol. +.TP 19 +.B ARES_NI_NUMERICSCOPE +The numeric form of the scope ID is returned rather than the name. +.TP 19 +.B ARES_NI_LOOKUPHOST +A hostname lookup is being requested. +.TP 19 +.B ARES_NI_LOOKUPSERVICE +A service name lookup is being requested. +.PP +When the query +is complete or has +failed, the ares library will invoke \fIcallback\fP. Completion or failure of +the query may happen immediately, or may happen during a later call to +\fIares_process(3)\fP, \fIares_destroy(3)\fP or \fIares_cancel(3)\fP. +.PP +The callback argument +.I arg +is copied from the +.B ares_getnameinfo +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The host lookup completed successfully. +.TP 19 +.B ARES_ENOTIMP +The ares library does not know how to look up addresses of type +.IR family . +.TP 19 +.B ARES_ENOTFOUND +The address +.I addr +was not found. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.TP 19 +.B ARES_EBADFLAGS +The +.I flags +parameter contains an illegal value. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +On successful completion of the query, the callback argument +.I node +contains a string representing the hostname (assuming +.B ARES_NI_LOOKUPHOST +was specified). Additionally, +.I service +contains a string representing the service name (assuming +.B ARES_NI_LOOKUPSERVICE +was specified). +If the query did not complete successfully, or one of the values +was not requested, +.I node +or +.I service +will be +.BR NULL . +.SH SEE ALSO +.BR ares_process (3), +.BR ares_getaddrinfo (3) +.SH AUTHOR +Dominick Meglio +.br +Copyright 2005 by Dominick Meglio. diff --git a/ares_getnameinfo.c b/ares_getnameinfo.c new file mode 100644 index 0000000..c1c0b16 --- /dev/null +++ b/ares_getnameinfo.c @@ -0,0 +1,409 @@ +/* $Id: ares_getnameinfo.c,v 1.36 2009-11-09 12:56:11 yangtse Exp $ */ + +/* Copyright 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ +#include "ares_setup.h" + +#ifdef HAVE_GETSERVBYPORT_R +# if !defined(GETSERVBYPORT_R_ARGS) || \ + (GETSERVBYPORT_R_ARGS < 4) || (GETSERVBYPORT_R_ARGS > 6) +# error "you MUST specifiy a valid number of arguments for getservbyport_r" +# endif +#endif + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_NET_IF_H +#include <net/if.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_ipv6.h" +#include "inet_ntop.h" +#include "ares_private.h" + +struct nameinfo_query { + ares_nameinfo_callback callback; + void *arg; + union { + struct sockaddr_in addr4; + struct sockaddr_in6 addr6; + } addr; + int family; + int flags; + int timeouts; +}; + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +#define IPBUFSIZ 40+IF_NAMESIZE +#else +#define IPBUFSIZ 40 +#endif + +static void nameinfo_callback(void *arg, int status, int timeouts, struct hostent *host); +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int scopeid, + char *buf, size_t buflen); +#endif +static char *ares_striendstr(const char *s1, const char *s2); + +void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa, + ares_socklen_t salen, + int flags, ares_nameinfo_callback callback, void *arg) +{ + struct sockaddr_in *addr = NULL; + struct sockaddr_in6 *addr6 = NULL; + struct nameinfo_query *niquery; + unsigned int port = 0; + + /* Verify the buffer size */ + if (salen == sizeof(struct sockaddr_in)) + { + addr = (struct sockaddr_in *)sa; + port = addr->sin_port; + } + else if (salen == sizeof(struct sockaddr_in6)) + { + addr6 = (struct sockaddr_in6 *)sa; + port = addr6->sin6_port; + } + else + { + callback(arg, ARES_ENOTIMP, 0, NULL, NULL); + return; + } + + /* If neither, assume they want a host */ + if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + flags |= ARES_NI_LOOKUPHOST; + + /* All they want is a service, no need for DNS */ + if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + { + char buf[33], *service; + + service = lookup_service((unsigned short)(port & 0xffff), + flags, buf, sizeof(buf)); + callback(arg, ARES_SUCCESS, 0, NULL, service); + return; + } + + /* They want a host lookup */ + if ((flags & ARES_NI_LOOKUPHOST)) + { + /* A numeric host can be handled without DNS */ + if ((flags & ARES_NI_NUMERICHOST)) + { + char ipbuf[IPBUFSIZ]; + char srvbuf[33]; + char *service = NULL; + ipbuf[0] = 0; + + /* Specifying not to lookup a host, but then saying a host + * is required has to be illegal. + */ + if (flags & ARES_NI_NAMEREQD) + { + callback(arg, ARES_EBADFLAGS, 0, NULL, NULL); + return; + } + if (salen == sizeof(struct sockaddr_in6)) + { + ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ); + /* If the system supports scope IDs, use it */ +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf)); +#endif + } + else + { + ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ); + } + /* They also want a service */ + if (flags & ARES_NI_LOOKUPSERVICE) + service = lookup_service((unsigned short)(port & 0xffff), + flags, srvbuf, sizeof(srvbuf)); + callback(arg, ARES_SUCCESS, 0, ipbuf, service); + return; + } + /* This is where a DNS lookup becomes necessary */ + else + { + niquery = malloc(sizeof(struct nameinfo_query)); + if (!niquery) + { + callback(arg, ARES_ENOMEM, 0, NULL, NULL); + return; + } + niquery->callback = callback; + niquery->arg = arg; + niquery->flags = flags; + niquery->timeouts = 0; + if (sa->sa_family == AF_INET) + { + niquery->family = AF_INET; + memcpy(&niquery->addr.addr4, addr, sizeof(addr)); + ares_gethostbyaddr(channel, &addr->sin_addr, sizeof(struct in_addr), AF_INET, + nameinfo_callback, niquery); + } + else + { + niquery->family = AF_INET6; + memcpy(&niquery->addr.addr6, addr6, sizeof(addr6)); + ares_gethostbyaddr(channel, &addr6->sin6_addr, sizeof(struct in6_addr), AF_INET6, + nameinfo_callback, niquery); + } + } + } +} + +static void nameinfo_callback(void *arg, int status, int timeouts, struct hostent *host) +{ + struct nameinfo_query *niquery = (struct nameinfo_query *) arg; + char srvbuf[33]; + char *service = NULL; + + niquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + /* NOFQDN means we have to strip off the domain name portion. + We do this by determining our own domain name, then searching the string + for this domain name and removing it. + */ +#ifdef HAVE_GETHOSTNAME + if (niquery->flags & ARES_NI_NOFQDN) + { + char buf[255]; + char *domain; + gethostname(buf, 255); + if ((domain = strchr(buf, '.'))) + { + char *end = ares_striendstr(host->h_name, domain); + if (end) + *end = 0; + } + } +#endif + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, (char *)(host->h_name), + service); + return; + } + /* We couldn't find the host, but it's OK, we can use the IP */ + else if (status == ARES_ENOTFOUND && !(niquery->flags & ARES_NI_NAMEREQD)) + { + char ipbuf[IPBUFSIZ]; + if (niquery->family == AF_INET) + ares_inet_ntop(AF_INET, &niquery->addr.addr4.sin_addr, ipbuf, IPBUFSIZ); + else + { + ares_inet_ntop(AF_INET6, &niquery->addr.addr6.sin6_addr, ipbuf, IPBUFSIZ); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(&niquery->addr.addr6, niquery->flags, ipbuf, sizeof(ipbuf)); +#endif + } + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, ipbuf, service); + return; + } + niquery->callback(niquery->arg, status, niquery->timeouts, NULL, NULL); + free(niquery); +} + +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen) +{ + const char *proto; + struct servent *sep; +#ifdef HAVE_GETSERVBYPORT_R + struct servent se; +#endif + char tmpbuf[4096]; + + if (port) + { + if (flags & ARES_NI_NUMERICSERV) + sep = NULL; + else + { + if (flags & ARES_NI_UDP) + proto = "udp"; + else if (flags & ARES_NI_SCTP) + proto = "sctp"; + else if (flags & ARES_NI_DCCP) + proto = "dccp"; + else + proto = "tcp"; +#ifdef HAVE_GETSERVBYPORT_R + sep = &se; + memset(tmpbuf, 0, sizeof(tmpbuf)); +#if GETSERVBYPORT_R_ARGS == 6 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf, sizeof(tmpbuf), &sep) != 0) + sep = NULL; +#elif GETSERVBYPORT_R_ARGS == 5 + sep = getservbyport_r(port, proto, &se, (void *)tmpbuf, sizeof(tmpbuf)); +#elif GETSERVBYPORT_R_ARGS == 4 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf) != 0) + sep = NULL; +#else + /* Lets just hope the OS uses TLS! */ + sep = getservbyport(port, proto); +#endif +#else + /* Lets just hope the OS uses TLS! */ +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) + sep = getservbyport(port, (char*)proto); +#else + sep = getservbyport(port, proto); +#endif +#endif + } + if (sep && sep->s_name) + /* get service name */ + strcpy(tmpbuf, sep->s_name); + else + /* get port as a string */ + sprintf(tmpbuf, "%u", (unsigned int)ntohs(port)); + if (strlen(tmpbuf) < buflen) + /* return it if buffer big enough */ + strcpy(buf, tmpbuf); + else + /* avoid reusing previous one */ + buf[0] = '\0'; + return buf; + } + buf[0] = '\0'; + return NULL; +} + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int flags, + char *buf, size_t buflen) +{ +#ifdef HAVE_IF_INDEXTONAME + int is_ll, is_mcll; +#endif + char fmt_u[] = "%u"; + char fmt_lu[] = "%lu"; + char tmpbuf[IF_NAMESIZE + 2]; + size_t bufl; + char *fmt = (sizeof(addr6->sin6_scope_id) > sizeof(unsigned int))?fmt_lu:fmt_u; + + tmpbuf[0] = '%'; + +#ifdef HAVE_IF_INDEXTONAME + is_ll = IN6_IS_ADDR_LINKLOCAL(&addr6->sin6_addr); + is_mcll = IN6_IS_ADDR_MC_LINKLOCAL(&addr6->sin6_addr); + if ((flags & ARES_NI_NUMERICSCOPE) || + (!is_ll && !is_mcll)) + { + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } + else + { + if (if_indextoname(addr6->sin6_scope_id, &tmpbuf[1]) == NULL) + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } +#else + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + (void) flags; +#endif + tmpbuf[IF_NAMESIZE + 1] = '\0'; + bufl = strlen(buf); + + if(bufl + strlen(tmpbuf) < buflen) + /* only append the scopeid string if it fits in the target buffer */ + strcpy(&buf[bufl], tmpbuf); +} +#endif + +/* Determines if s1 ends with the string in s2 (case-insensitive) */ +static char *ares_striendstr(const char *s1, const char *s2) +{ + const char *c1, *c2, *c1_begin; + int lo1, lo2; + size_t s1_len = strlen(s1), s2_len = strlen(s2); + + /* If the substr is longer than the full str, it can't match */ + if (s2_len > s1_len) + return NULL; + + /* Jump to the end of s1 minus the length of s2 */ + c1_begin = s1+s1_len-s2_len; + c1 = (const char *)c1_begin; + c2 = s2; + while (c2 < s2+s2_len) + { + lo1 = tolower(*c1); + lo2 = tolower(*c2); + if (lo1 != lo2) + return NULL; + else + { + c1++; + c2++; + } + } + if (c2 == c1 && c2 == NULL) + return (char *)c1_begin; + return NULL; +} diff --git a/ares_getopt.c b/ares_getopt.c new file mode 100644 index 0000000..67e1be7 --- /dev/null +++ b/ares_getopt.c @@ -0,0 +1,123 @@ +/* + * Original file name getopt.c Initial import into the c-ares source tree + * on 2007-04-11. Lifted from version 5.2 of the 'Open Mash' project with + * the modified BSD license, BSD license without the advertising clause. + * + * $Id: ares_getopt.c,v 1.9 2009-11-22 03:41:26 yangtse Exp $ + */ + +/* + * getopt.c -- + * + * Standard UNIX getopt function. Code is from BSD. + * + * Copyright (c) 1987-2001 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * C. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS + * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* #if !defined(lint) + * static char sccsid[] = "@(#)getopt.c 8.2 (Berkeley) 4/2/94"; + * #endif + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares_getopt.h" + +int opterr = 1, /* if error message should be printed */ + optind = 1; /* index into parent argv vector */ +int optopt = 0; /* character checked for validity */ +static int optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG (char *)"" + +/* + * ares_getopt -- + * Parse argc/argv argument vector. + */ +int +ares_getopt(int nargc, char * const nargv[], const char *ostr) +{ + static char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = EMSG; + return (EOF); + } + if (place[1] && *++place == '-') { /* found "--" */ + ++optind; + place = EMSG; + return (EOF); + } + } /* option letter okay? */ + if ((optopt = (int)*place++) == (int)':' || + (oli = strchr(ostr, optopt)) == NULL) { + /* + * if the user didn't specify '-' as an option, + * assume it means EOF. + */ + if (optopt == (int)'-') + return (EOF); + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __FILE__, optopt); + return (BADCH); + } + if (*++oli != ':') { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } + else { /* need an argument */ + if (*place) /* no white space */ + optarg = place; + else if (nargc <= ++optind) { /* no arg */ + place = EMSG; + if (*ostr == ':') + return (BADARG); + if (opterr) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + __FILE__, optopt); + return (BADCH); + } + else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} diff --git a/ares_getopt.h b/ares_getopt.h new file mode 100644 index 0000000..63acb3b --- /dev/null +++ b/ares_getopt.h @@ -0,0 +1,53 @@ +#ifndef ARES_GETOPT_H +#define ARES_GETOPT_H + +/* + * Copyright (c) 1987-2001 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * C. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS + * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + + +int ares_getopt(int nargc, char * const nargv[], const char *ostr); + +#undef optarg +#undef optind +#undef opterr +#undef optopt +#undef optreset + +#define optarg ares_optarg +#define optind ares_optind +#define opterr ares_opterr +#define optopt ares_optopt +#define optreset ares_optreset + +extern char *optarg; +extern int optind; +extern int opterr; +extern int optopt; + +#endif /* ARES_GETOPT_H */ diff --git a/ares_getsock.3 b/ares_getsock.3 new file mode 100644 index 0000000..b42f1c4 --- /dev/null +++ b/ares_getsock.3 @@ -0,0 +1,58 @@ +.\" $Id: ares_getsock.3,v 1.3 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 1998 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_GETSOCK 3 "22 December 2005" +.SH NAME +ares_getsock \- get file descriptors to wait on +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_getsock(ares_channel \fIchannel\fP, int *\fIsocks\fP, +.B int \fInumsocks\fP); +.fi +.SH DESCRIPTION +The +.B ares_getsock +function retrieves the set of file descriptors which the calling +application should wait on for reading and/or writing for the +processing of name service queries pending on the name service channel +identified by +.IR channel . +File descriptors will be set in the integer array pointed to by +\fIsocks\fP. +\fInumsocks\fP is the size of the given array in number of ints. + +This function can only return information about up to 16 sockets. If more are +in use (however unlikely that is), they are simply not reported back. +.SH RETURN VALUES +\fBares_getsock\fP returns a bitmask for what actions to wait for on the +different sockets. The ares.h header file provides these convenience macros to +extract the information appropriately: + +.nf +#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about + this many sockets */ +#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) +#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ + ARES_GETSOCK_MAXNUM))) +.fi +.SH NOTES +This function was added in c-ares 1.3.1 +.SH SEE ALSO +.BR ares_timeout (3), +.BR ares_fds (3), +.BR ares_process (3) diff --git a/ares_getsock.c b/ares_getsock.c new file mode 100644 index 0000000..a25b83a --- /dev/null +++ b/ares_getsock.c @@ -0,0 +1,75 @@ +/* $Id: ares_getsock.c,v 1.8 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2005 - 2007, Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +int ares_getsock(ares_channel channel, + int *s, + int numsocks) /* size of the 'socks' array */ +{ + struct server_state *server; + int i; + int sockindex=0; + int bitmap = 0; + unsigned int setbits = 0xffffffff; + + ares_socket_t *socks = (ares_socket_t *)s; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + for (i = 0; + (i < channel->nservers) && (sockindex < ARES_GETSOCK_MAXNUM); + i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->udp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + sockindex++; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->tcp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + + if (server->qhead && active_queries) + /* then the tcp socket is also writable! */ + bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex); + + sockindex++; + } + } + return bitmap; +} diff --git a/ares_init.3 b/ares_init.3 new file mode 100644 index 0000000..14be75f --- /dev/null +++ b/ares_init.3 @@ -0,0 +1,199 @@ +.\" $Id: ares_init.3,v 1.8 2009-11-23 00:57:51 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_INIT 3 "26 May 2009" +.SH NAME +ares_init, ares_init_options \- Initialize a resolver channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_init(ares_channel *\fIchannelptr\fP) +.B int ares_init_options(ares_channel *\fIchannelptr\fP, +.B struct ares_options *\fIoptions\fP, int \fIoptmask\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +The \fBares_init\fP function initializes a communications channel for name +service lookups. If it returns successfully, \fBares_init\fP will set the +variable pointed to by \fIchannelptr\fP to a handle used to identify the name +service channel. The caller should invoke +.BR ares_destroy (3) +on the handle when the channel is no longer needed. +.PP +The \fBares_init_options\fP function also initializes a name service channel, +with additional options useful for applications requiring more control over +name service configuration. The \fIoptmask\fP parameter specifies which fields +in the structure pointed to by \fIoptions\fP are set, as follows: +.TP 18 +.B ARES_OPT_FLAGS +.B int \fIflags\fP; +.br +Flags controlling the behavior of the resolver. See below for a +description of possible flag values. +.TP 18 +.B ARES_OPT_TIMEOUT +.B int \fItimeout\fP; +.br +The number of seconds each name server is given to respond to a query on the +first try. (After the first try, the timeout algorithm becomes more +complicated, but scales linearly with the value of \fItimeout\fP.) The +default is five seconds. This option is being deprecated by +\fIARES_OPT_TIMEOUTMS\fP starting in c-ares 1.5.2. +.TP 18 +.B ARES_OPT_TIMEOUTMS +.B int \fItimeout\fP; +.br +The number of milliseconds each name server is given to respond to a query on +the first try. (After the first try, the timeout algorithm becomes more +complicated, but scales linearly with the value of \fItimeout\fP.) The +default is five seconds. Note that this option is specified with the same +struct field as the former \fIARES_OPT_TIMEOUT\fP, it is but the option bits +that tell c-ares how to interpret the number. This option was added in c-ares +1.5.2. +.TP 18 +.B ARES_OPT_TRIES +.B int \fItries\fP; +.br +The number of tries the resolver will try contacting each name server +before giving up. The default is four tries. +.TP 18 +.B ARES_OPT_NDOTS +.B int \fIndots\fP; +.br +The number of dots which must be present in a domain name for it to be +queried for "as is" prior to querying for it with the default domain +extensions appended. The default value is 1 unless set otherwise by +resolv.conf or the RES_OPTIONS environment variable. +.TP 18 +.B ARES_OPT_PORT +.B unsigned short \fIport\fP; +.br +The port to use for queries (both TCP and UDP), in network byte order. +The default value is 53 (in network byte order), the standard name +service port. +.TP 18 +.B ARES_OPT_SERVERS +.B struct in_addr *\fIservers\fP; +.br +.B int \fInservers\fP; +.br +The list of servers to contact, instead of the servers specified in +resolv.conf or the local named. +.TP 18 +.B ARES_OPT_DOMAINS +.B char **\fIdomains\fP; +.br +.B int \fIndomains\fP; +.br +The domains to search, instead of the domains specified in resolv.conf +or the domain derived from the kernel hostname variable. +.TP 18 +.B ARES_OPT_LOOKUPS +.B char *\fIlookups\fP; +.br +The lookups to perform for host queries. +.I lookups +should be set to a string of the characters "b" or "f", where "b" +indicates a DNS lookup and "f" indicates a lookup in the hosts file. +.TP 18 +.B ARES_OPT_SOCK_STATE_CB +.B void (*\fIsock_state_cb\fP)(void *data, int s, int read, int write); +.br +.B void *\fIsock_state_cb_data\fP; +.br +A callback function to be invoked when a socket changes state. +.I s +will be passed the socket whose state has changed; +.I read +will be set to true if the socket should listen for read events, and +.I write +will be set to true if the socket should listen for write events. +The value of +.I sock_state_cb_data +will be passed as the +.I data +argument. +.PP +The +.I flags +field should be the bitwise or of some subset of the following values: +.TP 23 +.B ARES_FLAG_USEVC +Always use TCP queries (the "virtual circuit") instead of UDP +queries. Normally, TCP is only used if a UDP query yields a truncated +result. +.TP 23 +.B ARES_FLAG_PRIMARY +Only query the first server in the list of servers to query. +.TP 23 +.B ARES_FLAG_IGNTC +If a truncated response to a UDP query is received, do not fall back +to TCP; simply continue on with the truncated response. +.TP 23 +.B ARES_FLAG_NORECURSE +Do not set the "recursion desired" bit on outgoing queries, so that the name +server being contacted will not try to fetch the answer from other servers if +it doesn't know the answer locally. Be aware that ares will not do the +recursion for you. Recursion must be handled by the application calling ares +if \fIARES_FLAG_NORECURSE\fP is set. +.TP 23 +.B ARES_FLAG_STAYOPEN +Do not close communications sockets when the number of active queries +drops to zero. +.TP 23 +.B ARES_FLAG_NOSEARCH +Do not use the default search domains; only query hostnames as-is or +as aliases. +.TP 23 +.B ARES_FLAG_NOALIASES +Do not honor the HOSTALIASES environment variable, which normally +specifies a file of hostname translations. +.TP 23 +.B ARES_FLAG_NOCHECKRESP +Do not discard responses with the SERVFAIL, NOTIMP, or REFUSED +response code or responses whose questions don't match the questions +in the request. Primarily useful for writing clients which might be +used to test or debug name servers. +.SH RETURN VALUES +.I ares_init +or +.I ares_init_options +can return any of the following values: +.TP 14 +.B ARES_SUCCESS +Initialization succeeded. +.TP 14 +.B ARES_EFILE +A configuration file could not be read. +.TP 14 +.B ARES_ENOMEM +The process's available memory was exhausted. +.TP 14 +.B ARES_ENOTINITIALIZED +c-ares library initialization not yet performed. +.SH SEE ALSO +.BR ares_destroy(3), +.BR ares_dup(3), +.BR ares_library_init(3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2009 by Daniel Stenberg. diff --git a/ares_init.c b/ares_init.c new file mode 100644 index 0000000..cb541af --- /dev/null +++ b/ares_init.c @@ -0,0 +1,1582 @@ +/* $Id: ares_init.c,v 1.103 2009-11-18 10:33:54 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef USE_WINSOCK +#include <iphlpapi.h> +#endif + +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif + +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <time.h> +#include <errno.h> +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_library_init.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 /* Redefined in MingW/MSVC headers */ +#endif + +static int init_by_options(ares_channel channel, const struct ares_options *options, + int optmask); +static int init_by_environment(ares_channel channel); +static int init_by_resolv_conf(ares_channel channel); +static int init_by_defaults(ares_channel channel); + +#ifndef WATT32 +static int config_nameserver(struct server_state **servers, int *nservers, + char *str); +#endif +static int set_search(ares_channel channel, const char *str); +static int set_options(ares_channel channel, const char *str); +static const char *try_option(const char *p, const char *q, const char *opt); +static int init_id_key(rc4_key* key,int key_data_len); + +#if !defined(WIN32) && !defined(WATT32) +static int sortlist_alloc(struct apattern **sortlist, int *nsort, struct apattern *pat); +static int ip_addr(const char *s, int len, struct in_addr *addr); +static void natural_mask(struct apattern *pat); +static int config_domain(ares_channel channel, char *str); +static int config_lookup(ares_channel channel, const char *str, + const char *bindch, const char *filech); +static int config_sortlist(struct apattern **sortlist, int *nsort, + const char *str); +static char *try_config(char *s, const char *opt); +#endif + +#define ARES_CONFIG_CHECK(x) (x->lookups && x->nsort > -1 && \ + x->nservers > -1 && \ + x->ndomains > -1 && \ + x->ndots > -1 && x->timeout > -1 && \ + x->tries > -1) + +int ares_init(ares_channel *channelptr) +{ + return ares_init_options(channelptr, NULL, 0); +} + +int ares_init_options(ares_channel *channelptr, struct ares_options *options, + int optmask) +{ + ares_channel channel; + int i; + int status = ARES_SUCCESS; + struct server_state *server; + struct timeval now; + +#ifdef CURLDEBUG + const char *env = getenv("CARES_MEMDEBUG"); + + if (env) + curl_memdebug(env); + env = getenv("CARES_MEMLIMIT"); + if (env) + curl_memlimit(atoi(env)); +#endif + + if (ares_library_initialized() != ARES_SUCCESS) + return ARES_ENOTINITIALIZED; + + channel = malloc(sizeof(struct ares_channeldata)); + if (!channel) { + *channelptr = NULL; + return ARES_ENOMEM; + } + + now = ares__tvnow(); + + /* Set everything to distinguished values so we know they haven't + * been set yet. + */ + channel->flags = -1; + channel->timeout = -1; + channel->tries = -1; + channel->ndots = -1; + channel->rotate = -1; + channel->udp_port = -1; + channel->tcp_port = -1; + channel->socket_send_buffer_size = -1; + channel->socket_receive_buffer_size = -1; + channel->nservers = -1; + channel->ndomains = -1; + channel->nsort = -1; + channel->tcp_connection_generation = 0; + channel->lookups = NULL; + channel->domains = NULL; + channel->sortlist = NULL; + channel->servers = NULL; + channel->sock_state_cb = NULL; + channel->sock_state_cb_data = NULL; + channel->sock_create_cb = NULL; + channel->sock_create_cb_data = NULL; + + channel->last_server = 0; + channel->last_timeout_processed = (time_t)now.tv_sec; + + /* Initialize our lists of queries */ + ares__init_list_head(&(channel->all_queries)); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_qid[i])); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_timeout[i])); + } + + /* Initialize configuration by each of the four sources, from highest + * precedence to lowest. + */ + + if (status == ARES_SUCCESS) { + status = init_by_options(channel, options, optmask); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_options failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_environment(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_environment failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_resolv_conf(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_resolv_conf failed: %s\n", + ares_strerror(status))); + } + + /* + * No matter what failed or succeeded, seed defaults to provide + * useful behavior for things that we missed. + */ + status = init_by_defaults(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_defaults failed: %s\n", + ares_strerror(status))); + + /* Generate random key */ + + if (status == ARES_SUCCESS) { + status = init_id_key(&channel->id_key, ARES_ID_KEY_LEN); + if (status == ARES_SUCCESS) + channel->next_id = ares__generate_new_id(&channel->id_key); + else + DEBUGF(fprintf(stderr, "Error: init_id_key failed: %s\n", + ares_strerror(status))); + } + + if (status != ARES_SUCCESS) + { + /* Something failed; clean up memory we may have allocated. */ + if (channel->servers) + free(channel->servers); + if (channel->domains) + { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + if (channel->sortlist) + free(channel->sortlist); + if(channel->lookups) + free(channel->lookups); + free(channel); + return status; + } + + /* Trim to one server if ARES_FLAG_PRIMARY is set. */ + if ((channel->flags & ARES_FLAG_PRIMARY) && channel->nservers > 1) + channel->nservers = 1; + + /* Initialize server states. */ + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + server->udp_socket = ARES_SOCKET_BAD; + server->tcp_socket = ARES_SOCKET_BAD; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + server->tcp_lenbuf_pos = 0; + server->tcp_buffer = NULL; + server->qhead = NULL; + server->qtail = NULL; + ares__init_list_head(&(server->queries_to_server)); + server->channel = channel; + server->is_broken = 0; + } + + *channelptr = channel; + return ARES_SUCCESS; +} + +/* ares_dup() duplicates a channel handle with all its options and returns a + new channel handle */ +int ares_dup(ares_channel *dest, ares_channel src) +{ + struct ares_options opts; + int rc; + int optmask; + + *dest = NULL; /* in case of failure return NULL explicitly */ + + /* First get the options supported by the old ares_save_options() function, + which is most of them */ + rc = ares_save_options(src, &opts, &optmask); + if(rc) + return rc; + + /* Then create the new channel with those options */ + rc = ares_init_options(dest, &opts, optmask); + + /* destroy the options copy to not leak any memory */ + ares_destroy_options(&opts); + + if(rc) + return rc; + + /* Now clone the options that ares_save_options() doesn't support. */ + (*dest)->sock_create_cb = src->sock_create_cb; + (*dest)->sock_create_cb_data = src->sock_create_cb_data; + + + return ARES_SUCCESS; /* everything went fine */ + +} + +/* Save options from initialized channel */ +int ares_save_options(ares_channel channel, struct ares_options *options, + int *optmask) +{ + int i; + + /* Zero everything out */ + memset(options, 0, sizeof(struct ares_options)); + + if (!ARES_CONFIG_CHECK(channel)) + return ARES_ENODATA; + + /* Traditionally the optmask wasn't saved in the channel struct so it was + recreated here. ROTATE is the first option that has no struct field of + its own in the public config struct */ + (*optmask) = (ARES_OPT_FLAGS|ARES_OPT_TRIES|ARES_OPT_NDOTS| + ARES_OPT_UDP_PORT|ARES_OPT_TCP_PORT|ARES_OPT_SOCK_STATE_CB| + ARES_OPT_SERVERS|ARES_OPT_DOMAINS|ARES_OPT_LOOKUPS| + ARES_OPT_SORTLIST|ARES_OPT_TIMEOUTMS) | + (channel->optmask & ARES_OPT_ROTATE); + + /* Copy easy stuff */ + options->flags = channel->flags; + + /* We return full millisecond resolution but that's only because we don't + set the ARES_OPT_TIMEOUT anymore, only the new ARES_OPT_TIMEOUTMS */ + options->timeout = channel->timeout; + options->tries = channel->tries; + options->ndots = channel->ndots; + options->udp_port = (unsigned short)channel->udp_port; + options->tcp_port = (unsigned short)channel->tcp_port; + options->sock_state_cb = channel->sock_state_cb; + options->sock_state_cb_data = channel->sock_state_cb_data; + + /* Copy servers */ + if (channel->nservers) { + options->servers = + malloc(channel->nservers * sizeof(struct server_state)); + if (!options->servers && channel->nservers != 0) + return ARES_ENOMEM; + for (i = 0; i < channel->nservers; i++) + options->servers[i] = channel->servers[i].addr; + } + options->nservers = channel->nservers; + + /* copy domains */ + if (channel->ndomains) { + options->domains = malloc(channel->ndomains * sizeof(char *)); + if (!options->domains) + return ARES_ENOMEM; + + for (i = 0; i < channel->ndomains; i++) + { + options->ndomains = i; + options->domains[i] = strdup(channel->domains[i]); + if (!options->domains[i]) + return ARES_ENOMEM; + } + } + options->ndomains = channel->ndomains; + + /* copy lookups */ + if (channel->lookups) { + options->lookups = strdup(channel->lookups); + if (!options->lookups && channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if (channel->nsort) { + options->sortlist = malloc(channel->nsort * sizeof(struct apattern)); + if (!options->sortlist) + return ARES_ENOMEM; + for (i = 0; i < channel->nsort; i++) + { + memcpy(&(options->sortlist[i]), &(channel->sortlist[i]), + sizeof(struct apattern)); + } + } + options->nsort = channel->nsort; + + return ARES_SUCCESS; +} + +static int init_by_options(ares_channel channel, + const struct ares_options *options, + int optmask) +{ + int i; + + /* Easy stuff. */ + if ((optmask & ARES_OPT_FLAGS) && channel->flags == -1) + channel->flags = options->flags; + if ((optmask & ARES_OPT_TIMEOUTMS) && channel->timeout == -1) + channel->timeout = options->timeout; + else if ((optmask & ARES_OPT_TIMEOUT) && channel->timeout == -1) + channel->timeout = options->timeout * 1000; + if ((optmask & ARES_OPT_TRIES) && channel->tries == -1) + channel->tries = options->tries; + if ((optmask & ARES_OPT_NDOTS) && channel->ndots == -1) + channel->ndots = options->ndots; + if ((optmask & ARES_OPT_ROTATE) && channel->rotate == -1) + channel->rotate = 1; + if ((optmask & ARES_OPT_UDP_PORT) && channel->udp_port == -1) + channel->udp_port = options->udp_port; + if ((optmask & ARES_OPT_TCP_PORT) && channel->tcp_port == -1) + channel->tcp_port = options->tcp_port; + if ((optmask & ARES_OPT_SOCK_STATE_CB) && channel->sock_state_cb == NULL) + { + channel->sock_state_cb = options->sock_state_cb; + channel->sock_state_cb_data = options->sock_state_cb_data; + } + if ((optmask & ARES_OPT_SOCK_SNDBUF) + && channel->socket_send_buffer_size == -1) + channel->socket_send_buffer_size = options->socket_send_buffer_size; + if ((optmask & ARES_OPT_SOCK_RCVBUF) + && channel->socket_receive_buffer_size == -1) + channel->socket_receive_buffer_size = options->socket_receive_buffer_size; + + /* Copy the servers, if given. */ + if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->nservers > 0) + { + channel->servers = + malloc(options->nservers * sizeof(struct server_state)); + if (!channel->servers) + return ARES_ENOMEM; + for (i = 0; i < options->nservers; i++) + channel->servers[i].addr = options->servers[i]; + } + channel->nservers = options->nservers; + } + + /* Copy the domains, if given. Keep channel->ndomains consistent so + * we can clean up in case of error. + */ + if ((optmask & ARES_OPT_DOMAINS) && channel->ndomains == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->ndomains > 0) + { + channel->domains = malloc(options->ndomains * sizeof(char *)); + if (!channel->domains) + return ARES_ENOMEM; + for (i = 0; i < options->ndomains; i++) + { + channel->ndomains = i; + channel->domains[i] = strdup(options->domains[i]); + if (!channel->domains[i]) + return ARES_ENOMEM; + } + } + channel->ndomains = options->ndomains; + } + + /* Set lookups, if given. */ + if ((optmask & ARES_OPT_LOOKUPS) && !channel->lookups) + { + channel->lookups = strdup(options->lookups); + if (!channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if ((optmask & ARES_OPT_SORTLIST) && channel->nsort == -1) + { + channel->sortlist = malloc(options->nsort * sizeof(struct apattern)); + if (!channel->sortlist) + return ARES_ENOMEM; + for (i = 0; i < options->nsort; i++) + { + memcpy(&(channel->sortlist[i]), &(options->sortlist[i]), + sizeof(struct apattern)); + } + channel->nsort = options->nsort; + } + + channel->optmask = optmask; + + return ARES_SUCCESS; +} + +static int init_by_environment(ares_channel channel) +{ + const char *localdomain, *res_options; + int status; + + localdomain = getenv("LOCALDOMAIN"); + if (localdomain && channel->ndomains == -1) + { + status = set_search(channel, localdomain); + if (status != ARES_SUCCESS) + return status; + } + + res_options = getenv("RES_OPTIONS"); + if (res_options) + { + status = set_options(channel, res_options); + if (status != ARES_SUCCESS) + return status; + } + + return ARES_SUCCESS; +} + +#ifdef WIN32 +/* + * Warning: returns a dynamically allocated buffer, the user MUST + * use free() if the function returns 1 + */ +static int get_res_nt(HKEY hKey, const char *subkey, char **obuf) +{ + /* Test for the size we need */ + DWORD size = 0; + int result; + + result = RegQueryValueEx(hKey, subkey, 0, NULL, NULL, &size); + if ((result != ERROR_SUCCESS && result != ERROR_MORE_DATA) || !size) + return 0; + *obuf = malloc(size+1); + if (!*obuf) + return 0; + + if (RegQueryValueEx(hKey, subkey, 0, NULL, + (LPBYTE)*obuf, &size) != ERROR_SUCCESS) + { + free(*obuf); + return 0; + } + if (size == 1) + { + free(*obuf); + return 0; + } + return 1; +} + +static int get_res_interfaces_nt(HKEY hKey, const char *subkey, char **obuf) +{ + char enumbuf[39]; /* GUIDs are 38 chars + 1 for NULL */ + DWORD enum_size = 39; + int idx = 0; + HKEY hVal; + + while (RegEnumKeyEx(hKey, idx++, enumbuf, &enum_size, 0, + NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS) + { + int rc; + + enum_size = 39; + if (RegOpenKeyEx(hKey, enumbuf, 0, KEY_QUERY_VALUE, &hVal) != + ERROR_SUCCESS) + continue; + rc = get_res_nt(hVal, subkey, obuf); + RegCloseKey(hVal); + if (rc) + return 1; + } + return 0; +} + +static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size) +{ + FIXED_INFO *fi, *newfi; + DWORD size = sizeof (*fi); + IP_ADDR_STRING *ipAddr; + int i, count = 0; + int debug = 0; + size_t ip_size = sizeof("255.255.255.255,")-1; + size_t left = ret_size; + char *ret = ret_buf; + HRESULT res; + + fi = malloc(size); + if (!fi) + return 0; + + res = (*ares_fpGetNetworkParams) (fi, &size); + if ((res != ERROR_BUFFER_OVERFLOW) && (res != ERROR_SUCCESS)) + goto quit; + + newfi = realloc(fi, size); + if (!newfi) + goto quit; + + fi = newfi; + res = (*ares_fpGetNetworkParams) (fi, &size); + if (res != ERROR_SUCCESS) + goto quit; + + if (debug) + { + printf ("Host Name: %s\n", fi->HostName); + printf ("Domain Name: %s\n", fi->DomainName); + printf ("DNS Servers:\n" + " %s (primary)\n", fi->DnsServerList.IpAddress.String); + } + if (strlen(fi->DnsServerList.IpAddress.String) > 0 && + inet_addr(fi->DnsServerList.IpAddress.String) != INADDR_NONE && + left > ip_size) + { + ret += sprintf (ret, "%s,", fi->DnsServerList.IpAddress.String); + left -= ret - ret_buf; + count++; + } + + for (i = 0, ipAddr = fi->DnsServerList.Next; ipAddr && left > ip_size; + ipAddr = ipAddr->Next, i++) + { + if (inet_addr(ipAddr->IpAddress.String) != INADDR_NONE) + { + ret += sprintf (ret, "%s,", ipAddr->IpAddress.String); + left -= ret - ret_buf; + count++; + } + if (debug) + printf (" %s (secondary %d)\n", ipAddr->IpAddress.String, i+1); + } + +quit: + if (fi) + free(fi); + + if (debug && left <= ip_size) + printf ("Too many nameservers. Truncating to %d addressess", count); + if (ret > ret_buf) + ret[-1] = '\0'; + return count; +} +#endif + +static int init_by_resolv_conf(ares_channel channel) +{ +#ifndef WATT32 + char *line = NULL; +#endif + int status = -1, nservers = 0, nsort = 0; + struct server_state *servers = NULL; + struct apattern *sortlist = NULL; + +#ifdef WIN32 + + /* + NameServer info via IPHLPAPI (IP helper API): + GetNetworkParams() should be the trusted source for this. + Available in Win-98/2000 and later. If that fail, fall-back to + registry information. + + NameServer Registry: + + On Windows 9X, the DNS server can be found in: +HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer + + On Windows NT/2000/XP/2003: +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +DhcpNameServer + */ + + HKEY mykey; + HKEY subkey; + DWORD data_type; + DWORD bytes; + DWORD result; + char buf[256]; + + if (channel->nservers > -1) /* don't override ARES_OPT_SERVER */ + return ARES_SUCCESS; + + if (get_iphlpapi_dns_info(buf,sizeof(buf)) > 0) + { + status = config_nameserver(&servers, &nservers, buf); + if (status == ARES_SUCCESS) + goto okay; + } + + if (IS_NT()) + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + RegOpenKeyEx(mykey, "Interfaces", 0, + KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &subkey); + if (get_res_nt(mykey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_nt(mykey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + /* Try the interfaces */ + else if (get_res_interfaces_nt(subkey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_interfaces_nt(subkey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + RegCloseKey(subkey); + RegCloseKey(mykey); + } + } + else + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_9X, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + if ((result = RegQueryValueEx( + mykey, NAMESERVER, NULL, &data_type, + NULL, &bytes + ) + ) == ERROR_SUCCESS || + result == ERROR_MORE_DATA) + { + if (bytes) + { + line = malloc(bytes+1); + if (RegQueryValueEx(mykey, NAMESERVER, NULL, &data_type, + (unsigned char *)line, &bytes) == + ERROR_SUCCESS) + { + status = config_nameserver(&servers, &nservers, line); + } + free(line); + } + } + } + RegCloseKey(mykey); + } + + if (status == ARES_SUCCESS) + status = ARES_EOF; + else + /* Catch the case when all the above checks fail (which happens when there + is no network card or the cable is unplugged) */ + status = ARES_EFILE; + +#elif defined(__riscos__) + + /* Under RISC OS, name servers are listed in the + system variable Inet$Resolvers, space separated. */ + + line = getenv("Inet$Resolvers"); + status = ARES_EOF; + if (line) { + char *resolvers = strdup(line), *pos, *space; + + if (!resolvers) + return ARES_ENOMEM; + + pos = resolvers; + do { + space = strchr(pos, ' '); + if (space) + *space = '\0'; + status = config_nameserver(&servers, &nservers, pos); + if (status != ARES_SUCCESS) + break; + pos = space + 1; + } while (space); + + if (status == ARES_SUCCESS) + status = ARES_EOF; + + free(resolvers); + } + +#elif defined(WATT32) + int i; + + sock_init(); + for (i = 0; def_nameservers[i]; i++) + ; + if (i == 0) + return ARES_SUCCESS; /* use localhost DNS server */ + + nservers = i; + servers = calloc(i, sizeof(struct server_state)); + if (!servers) + return ARES_ENOMEM; + + for (i = 0; def_nameservers[i]; i++) + servers[i].addr.s_addr = htonl(def_nameservers[i]); + status = ARES_EOF; + +#else + { + char *p; + FILE *fp; + size_t linesize; + int error; + + /* Don't read resolv.conf and friends if we don't have to */ + if (ARES_CONFIG_CHECK(channel)) + return ARES_SUCCESS; + + fp = fopen(PATH_RESOLV_CONF, "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "domain")) && channel->ndomains == -1) + status = config_domain(channel, p); + else if ((p = try_config(line, "lookup")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "file"); + else if ((p = try_config(line, "search")) && channel->ndomains == -1) + status = set_search(channel, p); + else if ((p = try_config(line, "nameserver")) && channel->nservers == -1) + status = config_nameserver(&servers, &nservers, p); + else if ((p = try_config(line, "sortlist")) && channel->nsort == -1) + status = config_sortlist(&sortlist, &nsort, p); + else if ((p = try_config(line, "options"))) + status = set_options(channel, p); + else + status = ARES_SUCCESS; + if (status != ARES_SUCCESS) + break; + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", PATH_RESOLV_CONF)); + status = ARES_EFILE; + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Many systems (Solaris, Linux, BSD's) use nsswitch.conf */ + fp = fopen("/etc/nsswitch.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "hosts:")) && !channel->lookups) + status = config_lookup(channel, p, "dns", "files"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/nsswitch.conf")); + status = ARES_EFILE; + } + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Linux / GNU libc 2.x and possibly others have host.conf */ + fp = fopen("/etc/host.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "order")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "hosts"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/host.conf")); + status = ARES_EFILE; + } + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Tru64 uses /etc/svc.conf */ + fp = fopen("/etc/svc.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "hosts=")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "local"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/svc.conf")); + status = ARES_EFILE; + } + } + } + + if(line) + free(line); + } + +#endif + + /* Handle errors. */ + if (status != ARES_EOF) + { + if (servers != NULL) + free(servers); + if (sortlist != NULL) + free(sortlist); + return status; + } + + /* If we got any name server entries, fill them in. */ +#ifdef WIN32 +okay: +#endif + if (servers) + { + channel->servers = servers; + channel->nservers = nservers; + } + + /* If we got any sortlist entries, fill them in. */ + if (sortlist) + { + channel->sortlist = sortlist; + channel->nsort = nsort; + } + + return ARES_SUCCESS; +} + +static int init_by_defaults(ares_channel channel) +{ + char *hostname = NULL; + int rc = ARES_SUCCESS; +#ifdef HAVE_GETHOSTNAME + char *dot; +#endif + + if (channel->flags == -1) + channel->flags = 0; + if (channel->timeout == -1) + channel->timeout = DEFAULT_TIMEOUT; + if (channel->tries == -1) + channel->tries = DEFAULT_TRIES; + if (channel->ndots == -1) + channel->ndots = 1; + if (channel->rotate == -1) + channel->rotate = 0; + if (channel->udp_port == -1) + channel->udp_port = htons(NAMESERVER_PORT); + if (channel->tcp_port == -1) + channel->tcp_port = htons(NAMESERVER_PORT); + + if (channel->nservers == -1) { + /* If nobody specified servers, try a local named. */ + channel->servers = malloc(sizeof(struct server_state)); + if (!channel->servers) { + rc = ARES_ENOMEM; + goto error; + } + channel->servers[0].addr.s_addr = htonl(INADDR_LOOPBACK); + channel->nservers = 1; + } + +#ifdef ENAMETOOLONG +#define toolong(x) (x == -1) && ((ENAMETOOLONG == errno) || (EINVAL == errno)) +#else +#define toolong(x) (x == -1) && (EINVAL == errno) +#endif + + if (channel->ndomains == -1) { + /* Derive a default domain search list from the kernel hostname, + * or set it to empty if the hostname isn't helpful. + */ + size_t len = 64; + int res; + channel->ndomains = 0; /* default to none */ + +#ifdef HAVE_GETHOSTNAME + hostname = malloc(len); + if(!hostname) { + rc = ARES_ENOMEM; + goto error; + } + + do { + res = gethostname(hostname, len); + + if(toolong(res)) { + char *p; + len *= 2; + p = realloc(hostname, len); + if(!p) { + rc = ARES_ENOMEM; + goto error; + } + hostname = p; + continue; + } + else if(res) { + rc = ARES_EBADNAME; + goto error; + } + + } while(0); + + dot = strchr(hostname, '.'); + if (dot) { + /* a dot was found */ + channel->domains = malloc(sizeof(char *)); + if (!channel->domains) { + rc = ARES_ENOMEM; + goto error; + } + channel->domains[0] = strdup(dot + 1); + if (!channel->domains[0]) { + rc = ARES_ENOMEM; + goto error; + } + channel->ndomains = 1; + } +#endif + } + + if (channel->nsort == -1) { + channel->sortlist = NULL; + channel->nsort = 0; + } + + if (!channel->lookups) { + channel->lookups = strdup("fb"); + if (!channel->lookups) + rc = ARES_ENOMEM; + } + + error: + if(rc) { + if(channel->servers) + free(channel->servers); + + if(channel->domains && channel->domains[0]) + free(channel->domains[0]); + if(channel->domains) + free(channel->domains); + if(channel->lookups) + free(channel->lookups); + } + + if(hostname) + free(hostname); + + return rc; +} + +#if !defined(WIN32) && !defined(WATT32) +static int config_domain(ares_channel channel, char *str) +{ + char *q; + + /* Set a single search domain. */ + q = str; + while (*q && !ISSPACE(*q)) + q++; + *q = '\0'; + return set_search(channel, str); +} + +#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER == 910) && \ + defined(__OPTIMIZE__) && defined(__unix__) && defined(__i386__) + /* workaround icc 9.1 optimizer issue */ +# define vqualifier volatile +#else +# define vqualifier +#endif + +static int config_lookup(ares_channel channel, const char *str, + const char *bindch, const char *filech) +{ + char lookups[3], *l; + const char *vqualifier p; + + /* Set the lookup order. Only the first letter of each work + * is relevant, and it has to be "b" for DNS or "f" for the + * host file. Ignore everything else. + */ + l = lookups; + p = str; + while (*p) + { + if ((*p == *bindch || *p == *filech) && l < lookups + 2) { + if (*p == *bindch) *l++ = 'b'; + else *l++ = 'f'; + } + while (*p && !ISSPACE(*p) && (*p != ',')) + p++; + while (*p && (ISSPACE(*p) || (*p == ','))) + p++; + } + *l = '\0'; + channel->lookups = strdup(lookups); + return (channel->lookups) ? ARES_SUCCESS : ARES_ENOMEM; +} +#endif /* !WIN32 & !WATT32 */ + +#ifndef WATT32 +static int config_nameserver(struct server_state **servers, int *nservers, + char *str) +{ + struct in_addr addr; + struct server_state *newserv; + /* On Windows, there may be more than one nameserver specified in the same + * registry key, so we parse it as a space or comma seperated list. + */ +#ifdef WIN32 + char *p = str; + char *begin = str; + int more = 1; + while (more) + { + more = 0; + while (*p && !ISSPACE(*p) && *p != ',') + p++; + + if (*p) + { + *p = '\0'; + more = 1; + } + + /* Skip multiple spaces or trailing spaces */ + if (!*begin) + { + begin = ++p; + continue; + } + + /* This is the part that actually sets the nameserver */ + addr.s_addr = inet_addr(begin); + if (addr.s_addr == INADDR_NONE) + continue; + newserv = realloc(*servers, (*nservers + 1) * sizeof(struct server_state)); + if (!newserv) + return ARES_ENOMEM; + newserv[*nservers].addr = addr; + *servers = newserv; + (*nservers)++; + + if (!more) + break; + begin = ++p; + } +#else + /* Add a nameserver entry, if this is a valid address. */ + addr.s_addr = inet_addr(str); + if (addr.s_addr == INADDR_NONE) + return ARES_SUCCESS; + newserv = realloc(*servers, (*nservers + 1) * sizeof(struct server_state)); + if (!newserv) + return ARES_ENOMEM; + newserv[*nservers].addr = addr; + *servers = newserv; + (*nservers)++; +#endif + return ARES_SUCCESS; +} + +#ifndef WIN32 +static int config_sortlist(struct apattern **sortlist, int *nsort, + const char *str) +{ + struct apattern pat; + const char *q; + + /* Add sortlist entries. */ + while (*str && *str != ';') + { + int bits; + char ipbuf[16], ipbufpfx[32]; + /* Find just the IP */ + q = str; + while (*q && *q != '/' && *q != ';' && !ISSPACE(*q)) + q++; + memcpy(ipbuf, str, (int)(q-str)); + ipbuf[(int)(q-str)] = '\0'; + /* Find the prefix */ + if (*q == '/') + { + const char *str2 = q+1; + while (*q && *q != ';' && !ISSPACE(*q)) + q++; + memcpy(ipbufpfx, str, (int)(q-str)); + ipbufpfx[(int)(q-str)] = '\0'; + str = str2; + } + else + ipbufpfx[0] = '\0'; + /* Lets see if it is CIDR */ + /* First we'll try IPv6 */ + if ((bits = ares_inet_net_pton(AF_INET6, ipbufpfx[0] ? ipbufpfx : ipbuf, + &pat.addrV6, + sizeof(pat.addrV6))) > 0) + { + pat.type = PATTERN_CIDR; + pat.mask.bits = (unsigned short)bits; + pat.family = AF_INET6; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + if (ipbufpfx[0] && + (bits = ares_inet_net_pton(AF_INET, ipbufpfx, &pat.addrV4, + sizeof(pat.addrV4))) > 0) + { + pat.type = PATTERN_CIDR; + pat.mask.bits = (unsigned short)bits; + pat.family = AF_INET; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + /* See if it is just a regular IP */ + else if (ip_addr(ipbuf, (int)(q-str), &pat.addrV4) == 0) + { + if (ipbufpfx[0]) + { + memcpy(ipbuf, str, (int)(q-str)); + ipbuf[(int)(q-str)] = '\0'; + if (ip_addr(ipbuf, (int)(q - str), &pat.mask.addr4) != 0) + natural_mask(&pat); + } + else + natural_mask(&pat); + pat.family = AF_INET; + pat.type = PATTERN_MASK; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + else + { + while (*q && *q != ';' && !ISSPACE(*q)) + q++; + } + str = q; + while (ISSPACE(*str)) + str++; + } + + return ARES_SUCCESS; +} +#endif /* !WIN32 */ +#endif /* !WATT32 */ + +static int set_search(ares_channel channel, const char *str) +{ + int n; + const char *p, *q; + + if(channel->ndomains != -1) { + /* if we already have some domains present, free them first */ + for(n=0; n < channel->ndomains; n++) + free(channel->domains[n]); + free(channel->domains); + channel->domains = NULL; + channel->ndomains = -1; + } + + /* Count the domains given. */ + n = 0; + p = str; + while (*p) + { + while (*p && !ISSPACE(*p)) + p++; + while (ISSPACE(*p)) + p++; + n++; + } + + if (!n) + { + channel->ndomains = 0; + return ARES_SUCCESS; + } + + channel->domains = malloc(n * sizeof(char *)); + if (!channel->domains) + return ARES_ENOMEM; + + /* Now copy the domains. */ + n = 0; + p = str; + while (*p) + { + channel->ndomains = n; + q = p; + while (*q && !ISSPACE(*q)) + q++; + channel->domains[n] = malloc(q - p + 1); + if (!channel->domains[n]) + return ARES_ENOMEM; + memcpy(channel->domains[n], p, q - p); + channel->domains[n][q - p] = 0; + p = q; + while (ISSPACE(*p)) + p++; + n++; + } + channel->ndomains = n; + + return ARES_SUCCESS; +} + +static int set_options(ares_channel channel, const char *str) +{ + const char *p, *q, *val; + + p = str; + while (*p) + { + q = p; + while (*q && !ISSPACE(*q)) + q++; + val = try_option(p, q, "ndots:"); + if (val && channel->ndots == -1) + channel->ndots = atoi(val); + val = try_option(p, q, "retrans:"); + if (val && channel->timeout == -1) + channel->timeout = atoi(val); + val = try_option(p, q, "retry:"); + if (val && channel->tries == -1) + channel->tries = atoi(val); + val = try_option(p, q, "rotate"); + if (val && channel->rotate == -1) + channel->rotate = 1; + p = q; + while (ISSPACE(*p)) + p++; + } + + return ARES_SUCCESS; +} + +static const char *try_option(const char *p, const char *q, const char *opt) +{ + size_t len = strlen(opt); + return ((size_t)(q - p) >= len && !strncmp(p, opt, len)) ? &p[len] : NULL; +} + +#if !defined(WIN32) && !defined(WATT32) +static char *try_config(char *s, const char *opt) +{ + size_t len; + char *p; + char *q; + + if (!s || !opt) + /* no line or no option */ + return NULL; + + /* trim line comment */ + p = s; + while (*p && (*p != '#')) + p++; + *p = '\0'; + + /* trim trailing whitespace */ + q = p - 1; + while ((q >= s) && ISSPACE(*q)) + q--; + *++q = '\0'; + + /* skip leading whitespace */ + p = s; + while (*p && ISSPACE(*p)) + p++; + + if (!*p) + /* empty line */ + return NULL; + + if ((len = strlen(opt)) == 0) + /* empty option */ + return NULL; + + if (strncmp(p, opt, len) != 0) + /* line and option do not match */ + return NULL; + + /* skip over given option name */ + p += len; + + if (!*p) + /* no option value */ + return NULL; + + if ((opt[len-1] != ':') && (opt[len-1] != '=') && !ISSPACE(*p)) + /* whitespace between option name and value is mandatory + for given option names which do not end with ':' or '=' */ + return NULL; + + /* skip over whitespace */ + while (*p && ISSPACE(*p)) + p++; + + if (!*p) + /* no option value */ + return NULL; + + /* return pointer to option value */ + return p; +} + +static int sortlist_alloc(struct apattern **sortlist, int *nsort, + struct apattern *pat) +{ + struct apattern *newsort; + newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern)); + if (!newsort) + return 0; + newsort[*nsort] = *pat; + *sortlist = newsort; + (*nsort)++; + return 1; +} + +static int ip_addr(const char *ipbuf, int len, struct in_addr *addr) +{ + + /* Four octets and three periods yields at most 15 characters. */ + if (len > 15) + return -1; + + addr->s_addr = inet_addr(ipbuf); + if (addr->s_addr == INADDR_NONE && strcmp(ipbuf, "255.255.255.255") != 0) + return -1; + return 0; +} + +static void natural_mask(struct apattern *pat) +{ + struct in_addr addr; + + /* Store a host-byte-order copy of pat in a struct in_addr. Icky, + * but portable. + */ + addr.s_addr = ntohl(pat->addrV4.s_addr); + + /* This is out of date in the CIDR world, but some people might + * still rely on it. + */ + if (IN_CLASSA(addr.s_addr)) + pat->mask.addr4.s_addr = htonl(IN_CLASSA_NET); + else if (IN_CLASSB(addr.s_addr)) + pat->mask.addr4.s_addr = htonl(IN_CLASSB_NET); + else + pat->mask.addr4.s_addr = htonl(IN_CLASSC_NET); +} +#endif /* !WIN32 && !WATT32 */ + +/* initialize an rc4 key. If possible a cryptographically secure random key + is generated using a suitable function (for example win32's RtlGenRandom as + described in + http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx + otherwise the code defaults to cross-platform albeit less secure mechanism + using rand +*/ +static void randomize_key(unsigned char* key,int key_data_len) +{ + int randomized = 0; + int counter=0; +#ifdef WIN32 + BOOLEAN res; + if (ares_fpSystemFunction036) + { + res = (*ares_fpSystemFunction036) (key, key_data_len); + if (res) + randomized = 1; + } +#else /* !WIN32 */ +#ifdef RANDOM_FILE + FILE *f = fopen(RANDOM_FILE, "rb"); + if(f) { + counter = fread(key, 1, key_data_len, f); + fclose(f); + } +#endif +#endif /* WIN32 */ + + if ( !randomized ) { + for (;counter<key_data_len;counter++) + key[counter]=(unsigned char)(rand() % 256); + } +} + +static int init_id_key(rc4_key* key,int key_data_len) +{ + unsigned char index1; + unsigned char index2; + unsigned char* state; + short counter; + unsigned char *key_data_ptr = 0; + + key_data_ptr = calloc(1,key_data_len); + if (!key_data_ptr) + return ARES_ENOMEM; + + state = &key->state[0]; + for(counter = 0; counter < 256; counter++) + /* unnecessary AND but it keeps some compilers happier */ + state[counter] = (unsigned char)(counter & 0xff); + randomize_key(key->state,key_data_len); + key->x = 0; + key->y = 0; + index1 = 0; + index2 = 0; + for(counter = 0; counter < 256; counter++) + { + index2 = (unsigned char)((key_data_ptr[index1] + state[counter] + + index2) % 256); + ARES_SWAP_BYTE(&state[counter], &state[index2]); + + index1 = (unsigned char)((index1 + 1) % key_data_len); + } + free(key_data_ptr); + return ARES_SUCCESS; +} + +unsigned short ares__generate_new_id(rc4_key* key) +{ + unsigned short r=0; + ares__rc4(key, (unsigned char *)&r, sizeof(r)); + return r; +} + +void ares_set_socket_callback(ares_channel channel, + ares_sock_create_callback cb, + void *data) +{ + channel->sock_create_cb = cb; + channel->sock_create_cb_data = data; +} diff --git a/ares_init_options.3 b/ares_init_options.3 new file mode 100644 index 0000000..9bbaf74 --- /dev/null +++ b/ares_init_options.3 @@ -0,0 +1,2 @@ +.so man3/ares_init.3 +.\" $Id: ares_init_options.3,v 1.2 2009-05-19 16:05:45 yangtse Exp $ diff --git a/ares_ipv6.h b/ares_ipv6.h new file mode 100644 index 0000000..18914d1 --- /dev/null +++ b/ares_ipv6.h @@ -0,0 +1,84 @@ +/* $Id: ares_ipv6.h,v 1.9 2009-05-02 02:36:48 yangtse Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES_IPV6_H +#define ARES_IPV6_H + +#ifndef HAVE_PF_INET6 +#define PF_INET6 AF_INET6 +#endif + +#if !defined(HAVE_STRUCT_IN6_ADDR) && !defined(s6_addr) +struct in6_addr { + union { + unsigned char _S6_u8[16]; + } _S6_un; +}; +#define s6_addr _S6_un._S6_u8 +#endif + +#ifndef HAVE_STRUCT_SOCKADDR_IN6 +struct sockaddr_in6 +{ + unsigned short sin6_family; + unsigned short sin6_port; + unsigned long sin6_flowinfo; + struct in6_addr sin6_addr; + unsigned int sin6_scope_id; +}; +#endif + +#ifndef HAVE_STRUCT_ADDRINFO +struct addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + ares_socklen_t ai_addrlen; /* Follow rfc3493 struct addrinfo */ + char *ai_canonname; + struct sockaddr *ai_addr; + struct addrinfo *ai_next; +}; +#endif + +#ifndef NS_IN6ADDRSZ +#if SIZEOF_STRUCT_IN6_ADDR == 0 +/* We cannot have it set to zero, so we pick a fixed value here */ +#define NS_IN6ADDRSZ 16 +#else +#define NS_IN6ADDRSZ SIZEOF_STRUCT_IN6_ADDR +#endif +#endif + +#ifndef NS_INADDRSZ +#define NS_INADDRSZ SIZEOF_STRUCT_IN_ADDR +#endif + +#ifndef NS_INT16SZ +#define NS_INT16SZ 2 +#endif + +#ifndef IF_NAMESIZE +#ifdef IFNAMSIZ +#define IF_NAMESIZE IFNAMSIZ +#else +#define IF_NAMESIZE 256 +#endif +#endif + +#endif /* ARES_IPV6_H */ diff --git a/ares_library_cleanup.3 b/ares_library_cleanup.3 new file mode 100644 index 0000000..2a3f1c2 --- /dev/null +++ b/ares_library_cleanup.3 @@ -0,0 +1,74 @@ +.\" $Id: ares_library_cleanup.3,v 1.5 2009-11-24 10:08:45 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_LIBRARY_CLEANUP 3 "19 May 2009" +.SH NAME +ares_library_cleanup \- c-ares library deinitialization +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_library_cleanup(void) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +.PP +The +.B ares_library_cleanup +function uninitializes the c-ares library, freeing all resources +previously aquired by \fIares_library_init(3)\fP when the library +was initialized. +.PP +This function must be called when the program using c-ares will +no longer need any c-ares function. Once the program has called +\fIares_library_cleanup(3)\fP it shall not make any further call to any +c-ares function. +.PP +This function does not cancel any pending c-ares lookups or requests +previously done. Program must use \fIares_cancel(3)\fP for this purpose. +.PP +.B This function is not thread safe. +You have to call it once the program is about to terminate, but this call must +be done once the program has terminated every single thread that it could have +initiated. This is required to avoid potential race conditions in library +deinitialization, and also due to the fact that \fIares_library_cleanup(3)\fP +might call functions from other libraries that are thread unsafe, and could +conflict with any other thread that is already using these other libraries. +.PP +Win32/64 application DLLs shall not call \fIares_library_cleanup(3)\fP from +the DllMain function. Doing so will produce deadlocks and other problems. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0 along with the +definition of preprocessor symbol \fICARES_HAVE_ARES_LIBRARY_CLEANUP\fP as an +indication of the availability of this function. +.PP +Since the introduction of this function, it is absolutely mandatory to call it +for any Win32/64 program using c-ares. +.PP +Non-Win32/64 systems can still use c-ares version 1.7.0 without calling +\fIares_library_cleanup(3)\fP due to the fact that \fIcurrently\fP it is nearly +a do-nothing function on non-Win32/64 platforms. +.SH SEE ALSO +.BR ares_library_init(3), +.BR ares_cancel(3) +.SH AUTHOR +Yang Tse +.PP +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2009 by Daniel Stenberg. diff --git a/ares_library_init.3 b/ares_library_init.3 new file mode 100644 index 0000000..94fb7ff --- /dev/null +++ b/ares_library_init.3 @@ -0,0 +1,97 @@ +.\" $Id: ares_library_init.3,v 1.6 2009-11-24 10:08:46 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2009 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_LIBRARY_INIT 3 "19 May 2009" +.SH NAME +ares_library_init \- c-ares library initialization +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_library_init(int \fIflags\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +.PP +The +.B ares_library_init +function performs initializations internally required by the c-ares +library that must take place before any other function provided by +c-ares can be used in a program. +.PP +This function must be called one time within the life of a program, +before the program actually executes any other c-ares library function. +Initializations done by this function remain effective until a +call to \fIares_library_cleanup(3)\fP is performed. +.PP +Successive calls to this function do nothing, only the first call done +when c-ares is in an uninitialized state is actually effective. +.PP +The +.I flags +parameter is a bit pattern that tells c-ares exactly which features +should be initialized, as described below. Set the desired bits by +ORing the values together. In normal operation you should specify +\fIARES_LIB_INIT_ALL\fP. Don't use any other value unless you are +familiar with it and trying to control some internal c-ares feature. +.PP +.B This function is not thread safe. +You have to call it once the program has started, but this call must be done +before the program starts any other thread. This is required to avoid +potential race conditions in library initialization, and also due to the fact +that \fIares_library_init(3)\fP might call functions from other libraries that +are thread unsafe, and could conflict with any other thread that is already +using these other libraries. +.PP +Win32/64 application DLLs shall not call \fIares_library_init(3)\fP from the +DllMain function. Doing so will produce deadlocks and other problems. +.SH FLAGS +.TP 5 +.B ARES_LIB_INIT_ALL +Initialize everything possible. This sets all known bits. +.TP +.B ARES_LIB_INIT_WIN32 +Initialize Win32/64 specific libraries. +.TP +.B ARES_LIB_INIT_NONE +Initialize nothing extra. This sets no bit. +.SH RETURN VALUE +Upon successful completion, ares_library_init() will return 0. Otherwise, a +non-zero error number will be returned to indicate the error. Except for +\fIares_strerror(3)\fP, you shall not call any other c-ares function upon +\fIares_library_init(3)\fP failure. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0 along with the +definition of preprocessor symbol \fICARES_HAVE_ARES_LIBRARY_INIT\fP as an +indication of the availability of this function. +.PP +Since the introduction of this function it is absolutely mandatory to +call it for any Win32/64 program using c-ares. +.PP +Non-Win32/64 systems can still use c-ares version 1.7.0 without calling +\fIares_library_init(3)\fP due to the fact that \fIcurrently\fP it is nearly +a do-nothing function on non-Win32/64 platforms at this point. +.SH SEE ALSO +.BR ares_library_cleanup(3), +.BR ares_strerror(3) +.SH AUTHOR +Yang Tse +.PP +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2009 by Daniel Stenberg. diff --git a/ares_library_init.c b/ares_library_init.c new file mode 100644 index 0000000..049cfa4 --- /dev/null +++ b/ares_library_init.c @@ -0,0 +1,133 @@ +/* $Id: ares_library_init.c,v 1.11 2009-11-11 08:56:47 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include "ares.h" +#include "ares_library_init.h" +#include "ares_private.h" + +/* library-private global and unique instance vars */ + +#ifdef USE_WINSOCK +fpGetNetworkParams_t ares_fpGetNetworkParams = ZERO_NULL; +fpSystemFunction036_t ares_fpSystemFunction036 = ZERO_NULL; +#endif + +/* library-private global vars with source visibility restricted to this file */ + +static unsigned int ares_initialized; +static int ares_init_flags; + +#ifdef USE_WINSOCK +static HMODULE hnd_iphlpapi; +static HMODULE hnd_advapi32; +#endif + + +static int ares_win32_init(void) +{ +#ifdef USE_WINSOCK + + hnd_iphlpapi = 0; + hnd_iphlpapi = LoadLibrary("iphlpapi.dll"); + if (!hnd_iphlpapi) + return ARES_ELOADIPHLPAPI; + + ares_fpGetNetworkParams = (fpGetNetworkParams_t) + GetProcAddress(hnd_iphlpapi, "GetNetworkParams"); + if (!ares_fpGetNetworkParams) + { + FreeLibrary(hnd_iphlpapi); + return ARES_EADDRGETNETWORKPARAMS; + } + + /* + * When advapi32.dll is unavailable or advapi32.dll has no SystemFunction036, + * also known as RtlGenRandom, which is the case for Windows versions prior + * to WinXP then c-ares uses portable rand() function. Then don't error here. + */ + + hnd_advapi32 = 0; + hnd_advapi32 = LoadLibrary("advapi32.dll"); + if (hnd_advapi32) + { + ares_fpSystemFunction036 = (fpSystemFunction036_t) + GetProcAddress(hnd_advapi32, "SystemFunction036"); + } + +#endif + return ARES_SUCCESS; +} + + +static void ares_win32_cleanup(void) +{ +#ifdef USE_WINSOCK + if (hnd_advapi32) + FreeLibrary(hnd_advapi32); + if (hnd_iphlpapi) + FreeLibrary(hnd_iphlpapi); +#endif +} + + +int ares_library_init(int flags) +{ + int res; + + if (ares_initialized) + return ARES_SUCCESS; + ares_initialized++; + + if (flags & ARES_LIB_INIT_WIN32) + { + res = ares_win32_init(); + if (res != ARES_SUCCESS) + return res; + } + + ares_init_flags = flags; + + return ARES_SUCCESS; +} + + +void ares_library_cleanup(void) +{ + if (!ares_initialized) + return; + ares_initialized--; + + if (ares_init_flags & ARES_LIB_INIT_WIN32) + ares_win32_cleanup(); + + ares_init_flags = ARES_LIB_INIT_NONE; +} + + +int ares_library_initialized(void) +{ +#ifdef USE_WINSOCK + if (!ares_initialized) + return ARES_ENOTINITIALIZED; +#endif + return ARES_SUCCESS; +} + + diff --git a/ares_library_init.h b/ares_library_init.h new file mode 100644 index 0000000..a81d855 --- /dev/null +++ b/ares_library_init.h @@ -0,0 +1,40 @@ +#ifndef HEADER_CARES_LIBRARY_INIT_H +#define HEADER_CARES_LIBRARY_INIT_H + +/* $Id: ares_library_init.h,v 1.5 2009-11-11 08:56:47 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef USE_WINSOCK + +#include <iphlpapi.h> + +typedef DWORD (WINAPI *fpGetNetworkParams_t) (FIXED_INFO*, DWORD*); +typedef BOOLEAN (APIENTRY *fpSystemFunction036_t) (void*, ULONG); + +/* Forward-declaration of variables defined in ares_library_init.c */ +/* that are global and unique instances for whole c-ares library. */ + +extern fpGetNetworkParams_t ares_fpGetNetworkParams; +extern fpSystemFunction036_t ares_fpSystemFunction036; + +#endif /* USE_WINSOCK */ + +#endif /* HEADER_CARES_LIBRARY_INIT_H */ + diff --git a/ares_llist.c b/ares_llist.c new file mode 100644 index 0000000..c820ed1 --- /dev/null +++ b/ares_llist.c @@ -0,0 +1,87 @@ +/* $Id: ares_llist.c,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include "ares.h" +#include "ares_private.h" + +/* Routines for managing doubly-linked circular linked lists with a + * dummy head. + */ + +/* Initialize a new head node */ +void ares__init_list_head(struct list_node* head) { + head->prev = head; + head->next = head; + head->data = NULL; +} + +/* Initialize a list node */ +void ares__init_list_node(struct list_node* node, void* d) { + node->prev = NULL; + node->next = NULL; + node->data = d; +} + +/* Returns true iff the given list is empty */ +int ares__is_list_empty(struct list_node* head) { + return ((head->next == head) && (head->prev == head)); +} + +/* Inserts new_node before old_node */ +void ares__insert_in_list(struct list_node* new_node, + struct list_node* old_node) { + new_node->next = old_node; + new_node->prev = old_node->prev; + old_node->prev->next = new_node; + old_node->prev = new_node; +} + +/* Removes the node from the list it's in, if any */ +void ares__remove_from_list(struct list_node* node) { + if (node->next != NULL) { + node->prev->next = node->next; + node->next->prev = node->prev; + node->prev = NULL; + node->next = NULL; + } +} + +/* Swap the contents of two lists */ +void ares__swap_lists(struct list_node* head_a, + struct list_node* head_b) { + int is_a_empty = ares__is_list_empty(head_a); + int is_b_empty = ares__is_list_empty(head_b); + struct list_node old_a = *head_a; + struct list_node old_b = *head_b; + + if (is_a_empty) { + ares__init_list_head(head_b); + } else { + *head_b = old_a; + old_a.next->prev = head_b; + old_a.prev->next = head_b; + } + if (is_b_empty) { + ares__init_list_head(head_a); + } else { + *head_a = old_b; + old_b.next->prev = head_a; + old_b.prev->next = head_a; + } +} diff --git a/ares_llist.h b/ares_llist.h new file mode 100644 index 0000000..4875b3f --- /dev/null +++ b/ares_llist.h @@ -0,0 +1,43 @@ +#ifndef __ARES_LLIST_H +#define __ARES_LLIST_H + +/* $Id: ares_llist.h,v 1.1 2007-10-02 02:18:01 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +/* Node definition for circular, doubly-linked list */ +struct list_node { + struct list_node *prev; + struct list_node *next; + void* data; +}; + +void ares__init_list_head(struct list_node* head); + +void ares__init_list_node(struct list_node* node, void* d); + +int ares__is_list_empty(struct list_node* head); + +void ares__insert_in_list(struct list_node* new_node, + struct list_node* old_node); + +void ares__remove_from_list(struct list_node* node); + +void ares__swap_lists(struct list_node* head_a, + struct list_node* head_b); + +#endif /* __ARES_LLIST_H */ diff --git a/ares_mkquery.3 b/ares_mkquery.3 new file mode 100644 index 0000000..b03da8d --- /dev/null +++ b/ares_mkquery.3 @@ -0,0 +1,76 @@ +.\" $Id: ares_mkquery.3,v 1.5 2009-11-20 14:15:06 yangtse Exp $ +.\" +.\" Copyright 1998, 2000 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_MKQUERY 3 "20 Nov 2009" +.SH NAME +ares_mkquery \- Compose a single-question DNS query buffer +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_mkquery(const char *\fIname\fP, int \fIdnsclass\fP, int \fItype\fP, +.B unsigned short \fIid\fP, int \fIrd\fP, unsigned char **\fIbuf\fP, +.B int *\fIbuflen\fP) +.fi +.SH DESCRIPTION +The +.B ares_mkquery +function composes a DNS query with a single question. +The parameter +.I name +gives the query name as a NUL-terminated C string of period-separated +labels optionally ending with a period; periods and backslashes within +a label must be escaped with a backlash. The parameters +.I dnsclass +and +.I type +give the class and type of the query using the values defined in +.BR <arpa/nameser.h> . +The parameter +.I id +gives a 16-bit identifier for the query. The parameter +.I rd +should be nonzero if recursion is desired, zero if not. The query +will be placed in an allocated buffer, a pointer to which will be +stored in the variable pointed to by +.IR buf , +and the length of which will be stored in the variable pointed to by +.IR buflen . +It is the caller's responsibility to free this buffer using +\fIares_free_string(3)\fP when it is no longer needed. +.SH RETURN VALUES +.B ares_mkquery +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +Construction of the DNS query succeeded. +.TP 15 +.B ARES_EBADNAME +The query name +.I name +could not be encoded as a domain name, either because it contained a +zero-length label or because it contained a label of more than 63 +characters. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_expand_name (3), +.BR ares_free_string (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998, 2000 by the Massachusetts Institute of Technology. diff --git a/ares_mkquery.c b/ares_mkquery.c new file mode 100644 index 0000000..04d2b6d --- /dev/null +++ b/ares_mkquery.c @@ -0,0 +1,196 @@ +/* $Id: ares_mkquery.c,v 1.17 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +/* Header format, from RFC 1035: + * 1 1 1 1 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ID | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * |QR| Opcode |AA|TC|RD|RA| Z | RCODE | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QDCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ANCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | NSCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ARCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * + * AA, TC, RA, and RCODE are only set in responses. Brief description + * of the remaining fields: + * ID Identifier to match responses with queries + * QR Query (0) or response (1) + * Opcode For our purposes, always QUERY + * RD Recursion desired + * Z Reserved (zero) + * QDCOUNT Number of queries + * ANCOUNT Number of answers + * NSCOUNT Number of name server records + * ARCOUNT Number of additional records + * + * Question format, from RFC 1035: + * 1 1 1 1 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | | + * / QNAME / + * / / + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QTYPE | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QCLASS | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * + * The query name is encoded as a series of labels, each represented + * as a one-byte length (maximum 63) followed by the text of the + * label. The list is terminated by a label of length zero (which can + * be thought of as the root domain). + */ + +int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id, + int rd, unsigned char **buf, int *buflen) +{ + int len; + unsigned char *q; + const char *p; + + /* Set our results early, in case we bail out early with an error. */ + *buflen = 0; + *buf = NULL; + + /* Compute the length of the encoded name so we can check buflen. + * Start counting at 1 for the zero-length label at the end. */ + len = 1; + for (p = name; *p; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + len++; + } + /* If there are n periods in the name, there are n + 1 labels, and + * thus n + 1 length fields, unless the name is empty or ends with a + * period. So add 1 unless name is empty or ends with a period. + */ + if (*name && *(p - 1) != '.') + len++; + + /* Immediately reject names that are longer than the maximum of 255 + * bytes that's specified in RFC 1035 ("To simplify implementations, + * the total length of a domain name (i.e., label octets and label + * length octets) is restricted to 255 octets or less."). We aren't + * doing this just to be a stickler about RFCs. For names that are + * too long, 'dnscache' closes its TCP connection to us immediately + * (when using TCP) and ignores the request when using UDP, and + * BIND's named returns ServFail (TCP or UDP). Sending a request + * that we know will cause 'dnscache' to close the TCP connection is + * painful, since that makes any other outstanding requests on that + * connection fail. And sending a UDP request that we know + * 'dnscache' will ignore is bad because resources will be tied up + * until we time-out the request. + */ + if (len > MAXCDNAME) + return ARES_EBADNAME; + + *buflen = len + HFIXEDSZ + QFIXEDSZ; + *buf = malloc(*buflen); + if (!*buf) + return ARES_ENOMEM; + + /* Set up the header. */ + q = *buf; + memset(q, 0, HFIXEDSZ); + DNS_HEADER_SET_QID(q, id); + DNS_HEADER_SET_OPCODE(q, QUERY); + if (rd) { + DNS_HEADER_SET_RD(q, 1); + } + else { + DNS_HEADER_SET_RD(q, 0); + } + DNS_HEADER_SET_QDCOUNT(q, 1); + + /* A name of "." is a screw case for the loop below, so adjust it. */ + if (strcmp(name, ".") == 0) + name++; + + /* Start writing out the name after the header. */ + q += HFIXEDSZ; + while (*name) + { + if (*name == '.') + return ARES_EBADNAME; + + /* Count the number of bytes in this label. */ + len = 0; + for (p = name; *p && *p != '.'; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + len++; + } + if (len > MAXLABEL) + return ARES_EBADNAME; + + /* Encode the length and copy the data. */ + *q++ = (unsigned char)len; + for (p = name; *p && *p != '.'; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + *q++ = *p; + } + + /* Go to the next label and repeat, unless we hit the end. */ + if (!*p) + break; + name = p + 1; + } + + /* Add the zero-length label at the end. */ + *q++ = 0; + + /* Finish off the question with the type and class. */ + DNS_QUESTION_SET_TYPE(q, type); + DNS_QUESTION_SET_CLASS(q, dnsclass); + + return ARES_SUCCESS; +} diff --git a/ares_parse_a_reply.3 b/ares_parse_a_reply.3 new file mode 100644 index 0000000..a222908 --- /dev/null +++ b/ares_parse_a_reply.3 @@ -0,0 +1,79 @@ +.\" $Id: ares_parse_a_reply.3,v 1.5 2009-11-23 01:24:17 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_A_REPLY 3 "25 July 1998" +.SH NAME +ares_parse_a_reply \- Parse a reply to a DNS query of type A +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_a_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, +.B struct hostent **\fIhost\fP, +.B struct ares_addrttl *\fIaddrttls\fB, int *\fInaddrttls\fB); +.fi +.SH DESCRIPTION +The +.B ares_parse_a_reply +function parses the response to a query of type A into a +.BR "struct hostent" +and/or an array of +.BR "struct ares_addrttls" . +The parameters +.I abuf +and +.I alen +give the contents of the response. The result is stored in allocated +memory and a pointer to it stored into the variable pointed to by +.IR host , +if host is nonnull. +It is the caller's responsibility to free the resulting host structure +using +.BR ares_free_hostent (3) +when it is no longer needed. +.PP +If +.IR addrttls +and +.IR naddrttls +are both nonnull, +then up to *naddrttls +.BR "struct ares_addrttl" +records are stored in the array pointed to by addrttls, +and then *naddrttls is set to the number of records so stored. +Note that the memory for these records is supplied by the caller. +.SH RETURN VALUES +.B ares_parse_a_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_gethostbyname (3), +.BR ares_free_hostent (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_parse_a_reply.c b/ares_parse_a_reply.c new file mode 100644 index 0000000..801c193 --- /dev/null +++ b/ares_parse_a_reply.c @@ -0,0 +1,257 @@ +/* $Id: ares_parse_a_reply.c,v 1.20 2009-11-23 01:24:17 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_a_reply(const unsigned char *abuf, int alen, + struct hostent **host, + struct ares_addrttl *addrttls, int *naddrttls) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; + int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ + int naliases; + long len; + const unsigned char *aptr; + char *hostname, *rr_name, *rr_data, **aliases; + struct in_addr *addrs; + struct hostent *hostent; + const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; + + /* Set *host to NULL for all failure cases. */ + if (host) + *host = NULL; + /* Same with *naddrttls. */ + if (naddrttls) + *naddrttls = 0; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + if (host) + { + /* Allocate addresses and aliases; ancount gives an upper bound for + both. */ + addrs = malloc(ancount * sizeof(struct in_addr)); + if (!addrs) + { + free(hostname); + return ARES_ENOMEM; + } + aliases = malloc((ancount + 1) * sizeof(char *)); + if (!aliases) + { + free(hostname); + free(addrs); + return ARES_ENOMEM; + } + } + else + { + addrs = NULL; + aliases = NULL; + } + + naddrs = 0; + naliases = 0; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + rr_ttl = DNS_RR_TTL(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_A + && rr_len == sizeof(struct in_addr) + && strcasecmp(rr_name, hostname) == 0) + { + if (addrs) + { + if (aptr + sizeof(struct in_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&addrs[naddrs], aptr, sizeof(struct in_addr)); + } + if (naddrs < max_addr_ttls) + { + struct ares_addrttl * const at = &addrttls[naddrs]; + if (aptr + sizeof(struct in_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&at->ipaddr, aptr, sizeof(struct in_addr)); + at->ttl = rr_ttl; + } + naddrs++; + status = ARES_SUCCESS; + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Record the RR name as an alias. */ + if (aliases) + aliases[naliases] = rr_name; + else + free(rr_name); + naliases++; + + /* Decode the RR data and replace the hostname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(hostname); + hostname = rr_data; + + /* Take the min of the TTLs we see in the CNAME chain. */ + if (cname_ttl > rr_ttl) + cname_ttl = rr_ttl; + } + else + free(rr_name); + + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && naddrs == 0) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. */ + if (naddrttls) + { + const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; + for (i = 0; i < n; i++) + { + /* Ensure that each A TTL is no larger than the CNAME TTL. */ + if (addrttls[i].ttl > cname_ttl) + addrttls[i].ttl = cname_ttl; + } + *naddrttls = n; + } + if (aliases) + aliases[naliases] = NULL; + if (host) + { + /* Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); + if (hostent->h_addr_list) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = aliases; + hostent->h_addrtype = AF_INET; + hostent->h_length = sizeof(struct in_addr); + for (i = 0; i < naddrs; i++) + hostent->h_addr_list[i] = (char *) &addrs[i]; + hostent->h_addr_list[naddrs] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free(hostent); + } + status = ARES_ENOMEM; + } + } + if (aliases) + { + for (i = 0; i < naliases; i++) + free(aliases[i]); + free(aliases); + } + free(addrs); + free(hostname); + return status; +} diff --git a/ares_parse_aaaa_reply.3 b/ares_parse_aaaa_reply.3 new file mode 100644 index 0000000..31d3166 --- /dev/null +++ b/ares_parse_aaaa_reply.3 @@ -0,0 +1,79 @@ +.\" $Id: ares_parse_aaaa_reply.3,v 1.5 2009-11-23 01:24:17 yangtse Exp $ +.\" +.\" Copyright 2005 by Dominick Meglio. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_AAAA_REPLY 3 "20 Nov 2009" +.SH NAME +ares_parse_aaaa_reply \- Parse a reply to a DNS query of type AAAA +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_aaaa_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, +.B struct hostent **\fIhost\fP, +.B struct ares_addr6ttl *\fIaddrttls\fB, int *\fInaddrttls\fB); +.fi +.SH DESCRIPTION +The +.B ares_parse_aaaa_reply +function parses the response to a query of type AAAA into a +.BR "struct hostent" +and/or an array of +.BR "struct ares_addr6ttl" . +The parameters +.I abuf +and +.I alen +give the contents of the response. The result is stored in allocated +memory and a pointer to it stored into the variable pointed to by +.IR host , +if host is nonnull. +It is the caller's responsibility to free the resulting host structure +using +.BR ares_free_hostent (3) +when it is no longer needed. +.PP +If +.IR addrttls +and +.IR naddrttls +are both nonnull, +then up to *naddrttls +.BR "struct ares_addr6ttl" +records are stored in the array pointed to by addrttls, +and then *naddrttls is set to the number of records so stored. +Note that the memory for these records is supplied by the caller. +.SH RETURN VALUES +.B ares_parse_aaaa_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_gethostbyname (3), +.BR ares_free_hostent (3) +.SH AUTHOR +Dominick Meglio +.br +Copyright 2005 by Dominick Meglio. diff --git a/ares_parse_aaaa_reply.c b/ares_parse_aaaa_reply.c new file mode 100644 index 0000000..c2329cc --- /dev/null +++ b/ares_parse_aaaa_reply.c @@ -0,0 +1,257 @@ +/* $Id: ares_parse_aaaa_reply.c,v 1.16 2009-11-23 01:24:17 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright 2005 Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_dns.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +int ares_parse_aaaa_reply(const unsigned char *abuf, int alen, + struct hostent **host, struct ares_addr6ttl *addrttls, + int *naddrttls) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; + int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ + int naliases; + long len; + const unsigned char *aptr; + char *hostname, *rr_name, *rr_data, **aliases; + struct in6_addr *addrs; + struct hostent *hostent; + const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; + + /* Set *host to NULL for all failure cases. */ + if (host) + *host = NULL; + /* Same with *naddrttls. */ + if (naddrttls) + *naddrttls = 0; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Allocate addresses and aliases; ancount gives an upper bound for both. */ + if (host) + { + addrs = malloc(ancount * sizeof(struct in6_addr)); + if (!addrs) + { + free(hostname); + return ARES_ENOMEM; + } + aliases = malloc((ancount + 1) * sizeof(char *)); + if (!aliases) + { + free(hostname); + free(addrs); + return ARES_ENOMEM; + } + } + else + { + addrs = NULL; + aliases = NULL; + } + naddrs = 0; + naliases = 0; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + rr_ttl = DNS_RR_TTL(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_AAAA + && rr_len == sizeof(struct in6_addr) + && strcasecmp(rr_name, hostname) == 0) + { + if (addrs) + { + if (aptr + sizeof(struct in6_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&addrs[naddrs], aptr, sizeof(struct in6_addr)); + } + if (naddrs < max_addr_ttls) + { + struct ares_addr6ttl * const at = &addrttls[naddrs]; + if (aptr + sizeof(struct in6_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&at->ip6addr, aptr, sizeof(struct in6_addr)); + at->ttl = rr_ttl; + } + naddrs++; + status = ARES_SUCCESS; + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Record the RR name as an alias. */ + if (aliases) + aliases[naliases] = rr_name; + else + free(rr_name); + naliases++; + + /* Decode the RR data and replace the hostname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(hostname); + hostname = rr_data; + + /* Take the min of the TTLs we see in the CNAME chain. */ + if (cname_ttl > rr_ttl) + cname_ttl = rr_ttl; + } + else + free(rr_name); + + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && naddrs == 0) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. */ + if (naddrttls) + { + const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; + for (i = 0; i < n; i++) + { + /* Ensure that each A TTL is no larger than the CNAME TTL. */ + if (addrttls[i].ttl > cname_ttl) + addrttls[i].ttl = cname_ttl; + } + *naddrttls = n; + } + if (aliases) + aliases[naliases] = NULL; + if (host) + { + /* Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); + if (hostent->h_addr_list) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = aliases; + hostent->h_addrtype = AF_INET6; + hostent->h_length = sizeof(struct in6_addr); + for (i = 0; i < naddrs; i++) + hostent->h_addr_list[i] = (char *) &addrs[i]; + hostent->h_addr_list[naddrs] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free(hostent); + } + status = ARES_ENOMEM; + } + } + if (aliases) + { + for (i = 0; i < naliases; i++) + free(aliases[i]); + free(aliases); + } + free(addrs); + free(hostname); + return status; +} diff --git a/ares_parse_ns_reply.3 b/ares_parse_ns_reply.3 new file mode 100644 index 0000000..b6340ac --- /dev/null +++ b/ares_parse_ns_reply.3 @@ -0,0 +1,66 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_NS_REPLY 3 "10 February 2007" +.SH NAME +ares_parse_ns_reply \- Parse a reply to a DNS query of type NS into a hostent +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_ns_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, +.B struct hostent **\fIhost\fP); +.fi +.SH DESCRIPTION +The +.B ares_parse_ns_reply +function parses the response to a query of type NS into a +.BR "struct hostent" . +The parameters +.I abuf +and +.I alen +give the contents of the response. The result is stored in allocated +memory and a pointer to it stored into the variable pointed to by +.IR host . +The nameservers are stored into the +.BR aliases +field of the +.IR host +structure. +It is the caller's responsibility to free the resulting host structure +using +.BR ares_free_hostent (3) +when it is no longer needed. +.SH RETURN VALUES +.B ares_parse_ns_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_query (3), +.BR ares_free_hostent (3) +.SH AUTHOR +Written by Vlad Dinulescu <vlad.dinulescu@avira.com>, on behalf of AVIRA Gmbh http://www.avira.com diff --git a/ares_parse_ns_reply.c b/ares_parse_ns_reply.c new file mode 100644 index 0000000..25c6329 --- /dev/null +++ b/ares_parse_ns_reply.c @@ -0,0 +1,182 @@ +/* $Id */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * ares_parse_ns_reply created by Vlad Dinulescu <vlad.dinulescu@avira.com> + * on behalf of AVIRA Gmbh - http://www.avira.com + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_ns_reply( const unsigned char* abuf, int alen, + struct hostent** host ) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len; + int nameservers_num; + long len; + const unsigned char *aptr; + char* hostname, *rr_name, *rr_data, **nameservers; + struct hostent *hostent; + + /* Set *host to NULL for all failure cases. */ + *host = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if ( alen < HFIXEDSZ ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT( abuf ); + ancount = DNS_HEADER_ANCOUNT( abuf ); + if ( qdcount != 1 ) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response( aptr, abuf, alen, &hostname, &len); + if ( status != ARES_SUCCESS ) + return status; + if ( aptr + len + QFIXEDSZ > abuf + alen ) + { + free( hostname ); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Allocate nameservers array; ancount gives an upper bound */ + nameservers = malloc( ( ancount + 1 ) * sizeof( char * ) ); + if ( !nameservers ) + { + free( hostname ); + return ARES_ENOMEM; + } + nameservers_num = 0; + + /* Examine each answer resource record (RR) in turn. */ + for ( i = 0; i < ( int ) ancount; i++ ) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response( aptr, abuf, alen, &rr_name, &len ); + if ( status != ARES_SUCCESS ) + break; + aptr += len; + if ( aptr + RRFIXEDSZ > abuf + alen ) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE( aptr ); + rr_class = DNS_RR_CLASS( aptr ); + rr_len = DNS_RR_LEN( aptr ); + aptr += RRFIXEDSZ; + + if ( rr_class == C_IN && rr_type == T_NS ) + { + /* Decode the RR data and add it to the nameservers list */ + status = ares__expand_name_for_response( aptr, abuf, alen, &rr_data, + &len); + if ( status != ARES_SUCCESS ) + { + break; + } + + nameservers[nameservers_num] = malloc(strlen(rr_data)+1); + + if (nameservers[nameservers_num]==NULL) + { + free(rr_name); + free(rr_data); + status=ARES_ENOMEM; + break; + } + strcpy(nameservers[nameservers_num],rr_data); + free(rr_data); + + nameservers_num++; + } + + free( rr_name ); + + aptr += rr_len; + if ( aptr > abuf + alen ) + { + status = ARES_EBADRESP; + break; + } + } + + if ( status == ARES_SUCCESS && nameservers_num == 0 ) + { + status = ARES_ENODATA; + } + if ( status == ARES_SUCCESS ) + { + /* We got our answer. Allocate memory to build the host entry. */ + nameservers[nameservers_num] = NULL; + hostent = malloc( sizeof( struct hostent ) ); + if ( hostent ) + { + hostent->h_addr_list = malloc( 1 * sizeof( char * ) ); + if ( hostent->h_addr_list ) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = nameservers; + hostent->h_addrtype = AF_INET; + hostent->h_length = sizeof( struct in_addr ); + hostent->h_addr_list[0] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free( hostent ); + } + status = ARES_ENOMEM; + } + for ( i = 0; i < nameservers_num; i++ ) + free( nameservers[i] ); + free( nameservers ); + free( hostname ); + return status; +} diff --git a/ares_parse_ptr_reply.3 b/ares_parse_ptr_reply.3 new file mode 100644 index 0000000..21e91ba --- /dev/null +++ b/ares_parse_ptr_reply.3 @@ -0,0 +1,75 @@ +.\" $Id: ares_parse_ptr_reply.3,v 1.3 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_PTR_REPLY 3 "25 July 1998" +.SH NAME +ares_parse_ptr_reply \- Parse a reply to a DNS query of type PTR into a hostent +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_ptr_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, +.B const void *\fIaddr\fP, int \fIaddrlen\fP, int \fIfamily\fP, +.B struct hostent **\fIhost\fP); +.fi +.SH DESCRIPTION +The +.B ares_parse_ptr_reply +function parses the response to a query of type PTR into a +.BR "struct hostent" . +The parameters +.I abuf +and +.I alen +give the contents of the response. The parameters +.IR addr , +.IR addrlen , +and +.I family +specify which address was queried for; they are not used to verify the +response, merely used to fill in the address of the +.BR "struct hostent" . +The resulting +.B struct hostent +is stored in allocated memory and a pointer to it stored into the +variable pointed to by +.IR host . +It is the caller's responsibility to free the resulting host structure +using +.BR ares_free_hostent (3) +when it is no longer needed. +.SH RETURN VALUES +.B ares_parse_ptr_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH SEE ALSO +.BR ares_gethostbyaddr (3), +.BR ares_free_hostent (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_parse_ptr_reply.c b/ares_parse_ptr_reply.c new file mode 100644 index 0000000..6f039b9 --- /dev/null +++ b/ares_parse_ptr_reply.c @@ -0,0 +1,209 @@ +/* $Id: ares_parse_ptr_reply.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr, + int addrlen, int family, struct hostent **host) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len; + long len; + const unsigned char *aptr; + char *ptrname, *hostname, *rr_name, *rr_data; + struct hostent *hostent; + int aliascnt = 0; + int alias_alloc = 8; + char ** aliases; + + /* Set *host to NULL for all failure cases. */ + *host = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &ptrname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(ptrname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + hostname = NULL; + aliases = malloc(alias_alloc * sizeof(char *)); + if (!aliases) + { + free(ptrname); + return ARES_ENOMEM; + } + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_PTR + && strcasecmp(rr_name, ptrname) == 0) + { + /* Decode the RR data and set hostname to it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + if (hostname) + free(hostname); + hostname = rr_data; + aliases[aliascnt] = malloc((strlen(rr_data)+1) * sizeof(char *)); + if (!aliases[aliascnt]) + { + status = ARES_ENOMEM; + break; + } + strncpy(aliases[aliascnt], rr_data, strlen(rr_data)+1); + aliascnt++; + if (aliascnt >= alias_alloc) { + char **ptr; + alias_alloc *= 2; + ptr = realloc(aliases, alias_alloc * sizeof(char *)); + if(!ptr) { + status = ARES_ENOMEM; + break; + } + aliases = ptr; + } + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Decode the RR data and replace ptrname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(ptrname); + ptrname = rr_data; + } + + free(rr_name); + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && !hostname) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc(2 * sizeof(char *)); + if (hostent->h_addr_list) + { + hostent->h_addr_list[0] = malloc(addrlen); + if (hostent->h_addr_list[0]) + { + hostent->h_aliases = malloc((aliascnt+1) * sizeof (char *)); + if (hostent->h_aliases) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + for (i=0 ; i<aliascnt ; i++) + hostent->h_aliases[i] = aliases[i]; + hostent->h_aliases[aliascnt] = NULL; + hostent->h_addrtype = family; + hostent->h_length = addrlen; + memcpy(hostent->h_addr_list[0], addr, addrlen); + hostent->h_addr_list[1] = NULL; + *host = hostent; + free(aliases); + free(ptrname); + return ARES_SUCCESS; + } + free(hostent->h_addr_list[0]); + } + free(hostent->h_addr_list); + } + free(hostent); + } + status = ARES_ENOMEM; + } + for (i=0 ; i<aliascnt ; i++) + if (aliases[i]) + free(aliases[i]); + free(aliases); + if (hostname) + free(hostname); + free(ptrname); + return status; +} diff --git a/ares_parse_srv_reply.3 b/ares_parse_srv_reply.3 new file mode 100644 index 0000000..9b561ff --- /dev/null +++ b/ares_parse_srv_reply.3 @@ -0,0 +1,81 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_SRV_REPLY 3 "4 August 2009" +.SH NAME +ares_parse_srv_reply \- Parse a reply to a DNS query of type SRV +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_srv_reply(const unsigned char* \fIabuf\fP, int \fIalen\fP, +.B struct ares_srv_reply** \fIsrv_out\fP); +.fi +.SH DESCRIPTION +The +.B ares_parse_srv_reply +function parses the response to a query of type SRV into a +linked list of +.I struct ares_srv_reply +The parameters +.I abuf +and +.I alen +give the contents of the response. The result is stored in allocated +memory and a pointer to it stored into the variable pointed to by +.IR srv_out . +It is the caller's responsibility to free the resulting +.IR srv_out +structure when it is no longer needed using the function +.B ares_free_data +.PP +The structure +.I ares_srv_reply +contains the following fields: +.sp +.in +4n +.nf +struct ares_srv_reply { + struct ares_srv_reply *next; + unsigned short weight; + unsigned short priority; + unsigned short port; + char *host; +}; +.fi +.in +.PP +.SH RETURN VALUES +.B ares_parse_srv_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0. +.SH SEE ALSO +.BR ares_query (3) +.BR ares_free_data (3) +.SH AUTHOR +Written by Jakub Hrozek <jhrozek@redhat.com>, on behalf of Red Hat, Inc http://www.redhat.com diff --git a/ares_parse_srv_reply.c b/ares_parse_srv_reply.c new file mode 100644 index 0000000..72830af --- /dev/null +++ b/ares_parse_srv_reply.c @@ -0,0 +1,180 @@ +/* $Id: ares_parse_srv_reply.c,v 1.12 2009-11-26 01:21:21 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com> + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_data.h" +#include "ares_private.h" + +/* AIX portability check */ +#ifndef T_SRV +# define T_SRV 33 /* server selection */ +#endif + +int +ares_parse_srv_reply (const unsigned char *abuf, int alen, + struct ares_srv_reply **srv_out) +{ + unsigned int qdcount, ancount, i; + const unsigned char *aptr, *vptr; + int status, rr_type, rr_class, rr_len; + long len; + char *hostname = NULL, *rr_name = NULL; + struct ares_srv_reply *srv_head = NULL; + struct ares_srv_reply *srv_last = NULL; + struct ares_srv_reply *srv_curr; + + /* Set *srv_out to NULL for all failure cases. */ + *srv_out = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT (abuf); + ancount = DNS_HEADER_ANCOUNT (abuf); + if (qdcount != 1) + return ARES_EBADRESP; + if (ancount == 0) + return ARES_ENODATA; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares_expand_name (aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free (hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + { + break; + } + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE (aptr); + rr_class = DNS_RR_CLASS (aptr); + rr_len = DNS_RR_LEN (aptr); + aptr += RRFIXEDSZ; + + /* Check if we are really looking at a SRV record */ + if (rr_class == C_IN && rr_type == T_SRV) + { + /* parse the SRV record itself */ + if (rr_len < 6) + { + status = ARES_EBADRESP; + break; + } + + /* Allocate storage for this SRV answer appending it to the list */ + srv_curr = ares_malloc_data(ARES_DATATYPE_SRV_REPLY); + if (!srv_curr) + { + status = ARES_ENOMEM; + break; + } + if (srv_last) + { + srv_last->next = srv_curr; + } + else + { + srv_head = srv_curr; + } + srv_last = srv_curr; + + vptr = aptr; + srv_curr->priority = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + srv_curr->weight = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + srv_curr->port = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + + status = ares_expand_name (vptr, abuf, alen, &srv_curr->host, &len); + if (status != ARES_SUCCESS) + break; + } + + /* Don't lose memory in the next iteration */ + free (rr_name); + rr_name = NULL; + + /* Move on to the next record */ + aptr += rr_len; + } + + if (hostname) + free (hostname); + if (rr_name) + free (rr_name); + + /* clean up on error */ + if (status != ARES_SUCCESS) + { + if (srv_head) + ares_free_data (srv_head); + return status; + } + + /* everything looks fine, return the data */ + *srv_out = srv_head; + + return ARES_SUCCESS; +} diff --git a/ares_parse_txt_reply.3 b/ares_parse_txt_reply.3 new file mode 100644 index 0000000..c9926bc --- /dev/null +++ b/ares_parse_txt_reply.3 @@ -0,0 +1,80 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PARSE_TXT_REPLY 3 "27 October 2009" +.SH NAME +ares_parse_txt_reply \- Parse a reply to a DNS query of type TXT +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_parse_txt_reply(const unsigned char* \fIabuf\fP, int \fIalen\fP, +.B struct ares_txt_reply **\fItxt_out\fP); +.fi +.SH DESCRIPTION +The +.B ares_parse_txt_reply +function parses the response to a query of type TXT into a +linked list of +.I struct ares_txt_reply +The parameters +.I abuf +and +.I alen +give the contents of the response. The result is stored in allocated +memory and a pointer to it stored into the variable pointed to by +.IR txt_out . +It is the caller's responsibility to free the resulting +.IR txt_out +structure when it is no longer needed using the function +.B ares_free_data +.PP +The structure +.I ares_txt_reply +contains the following fields: +.sp +.in +4n +.nf +struct ares_txt_reply { + struct ares_txt_reply *next; + unsigned int length; + unsigned char *txt; +}; +.fi +.in +.PP +.SH RETURN VALUES +.B ares_parse_txt_reply +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The response was successfully parsed. +.TP 15 +.B ARES_EBADRESP +The response was malformatted. +.TP 15 +.B ARES_ENODATA +The response did not contain an answer to the query. +.TP 15 +.B ARES_ENOMEM +Memory was exhausted. +.SH AVAILABILITY +This function was first introduced in c-ares version 1.7.0. +.SH SEE ALSO +.BR ares_query (3) +.BR ares_free_data (3) +.SH AUTHOR +Written by Jakub Hrozek <jhrozek@redhat.com>, on behalf of Red Hat, Inc http://www.redhat.com + diff --git a/ares_parse_txt_reply.c b/ares_parse_txt_reply.c new file mode 100644 index 0000000..b6af850 --- /dev/null +++ b/ares_parse_txt_reply.c @@ -0,0 +1,202 @@ +/* $Id: ares_parse_txt_reply.c,v 1.9 2009-11-26 01:21:21 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com> + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_dns.h" +#include "ares_data.h" +#include "ares_private.h" + +int +ares_parse_txt_reply (const unsigned char *abuf, int alen, + struct ares_txt_reply **txt_out) +{ + size_t substr_len, str_len; + unsigned int qdcount, ancount, i; + const unsigned char *aptr; + const unsigned char *strptr; + int status, rr_type, rr_class, rr_len; + long len; + char *hostname = NULL, *rr_name = NULL; + struct ares_txt_reply *txt_head = NULL; + struct ares_txt_reply *txt_last = NULL; + struct ares_txt_reply *txt_curr; + + /* Set *txt_out to NULL for all failure cases. */ + *txt_out = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT (abuf); + ancount = DNS_HEADER_ANCOUNT (abuf); + if (qdcount != 1) + return ARES_EBADRESP; + if (ancount == 0) + return ARES_ENODATA; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares_expand_name (aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free (hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + { + break; + } + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE (aptr); + rr_class = DNS_RR_CLASS (aptr); + rr_len = DNS_RR_LEN (aptr); + aptr += RRFIXEDSZ; + + /* Check if we are really looking at a TXT record */ + if (rr_class == C_IN && rr_type == T_TXT) + { + /* Allocate storage for this TXT answer appending it to the list */ + txt_curr = ares_malloc_data(ARES_DATATYPE_TXT_REPLY); + if (!txt_curr) + { + status = ARES_ENOMEM; + break; + } + if (txt_last) + { + txt_last->next = txt_curr; + } + else + { + txt_head = txt_curr; + } + txt_last = txt_curr; + + /* + * There may be multiple substrings in a single TXT record. Each + * substring may be up to 255 characters in length, with a + * "length byte" indicating the size of the substring payload. + * RDATA contains both the length-bytes and payloads of all + * substrings contained therein. + */ + + /* Compute total length to allow a single memory allocation */ + strptr = aptr; + while (strptr < (aptr + rr_len)) + { + substr_len = (unsigned char)*strptr; + txt_curr->length += substr_len; + strptr += substr_len + 1; + } + + /* Including null byte */ + txt_curr->txt = malloc (txt_curr->length + 1); + if (txt_curr->txt == NULL) + { + status = ARES_ENOMEM; + break; + } + + /* Step through the list of substrings, concatenating them */ + str_len = 0; + strptr = aptr; + while (strptr < (aptr + rr_len)) + { + substr_len = (unsigned char)*strptr; + strptr++; + memcpy ((char *) txt_curr->txt + str_len, strptr, substr_len); + str_len += substr_len; + strptr += substr_len; + } + /* Make sure we NULL-terminate */ + *((char *) txt_curr->txt + txt_curr->length) = '\0'; + } + + /* Don't lose memory in the next iteration */ + free (rr_name); + rr_name = NULL; + + /* Move on to the next record */ + aptr += rr_len; + } + + if (hostname) + free (hostname); + if (rr_name) + free (rr_name); + + /* clean up on error */ + if (status != ARES_SUCCESS) + { + if (txt_head) + ares_free_data (txt_head); + return status; + } + + /* everything looks fine, return the data */ + *txt_out = txt_head; + + return ARES_SUCCESS; +} diff --git a/ares_private.h b/ares_private.h new file mode 100644 index 0000000..4726d7a --- /dev/null +++ b/ares_private.h @@ -0,0 +1,343 @@ +#ifndef __ARES_PRIVATE_H +#define __ARES_PRIVATE_H + +/* $Id: ares_private.h,v 1.50 2009-11-09 12:56:50 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +#define WIN32 +#endif + +#include <stdio.h> +#include <sys/types.h> + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef WATT32 +#include <tcp.h> +#include <sys/ioctl.h> +#define writev(s,v,c) writev_s(s,v,c) +#define HAVE_WRITEV 1 +#endif + +#ifdef NETWARE +#include <time.h> +#endif + +#define DEFAULT_TIMEOUT 5000 /* milliseconds */ +#define DEFAULT_TRIES 4 +#ifndef INADDR_NONE +#define INADDR_NONE 0xffffffff +#endif + +#if defined(WIN32) && !defined(WATT32) + +#define IS_NT() ((int)GetVersion() > 0) +#define WIN_NS_9X "System\\CurrentControlSet\\Services\\VxD\\MSTCP" +#define WIN_NS_NT_KEY "System\\CurrentControlSet\\Services\\Tcpip\\Parameters" +#define NAMESERVER "NameServer" +#define DHCPNAMESERVER "DhcpNameServer" +#define DATABASEPATH "DatabasePath" +#define WIN_PATH_HOSTS "\\hosts" + +#elif defined(WATT32) + +#define PATH_RESOLV_CONF "/dev/ENV/etc/resolv.conf" + +#elif defined(NETWARE) + +#define PATH_RESOLV_CONF "sys:/etc/resolv.cfg" +#define PATH_HOSTS "sys:/etc/hosts" + +#elif defined(__riscos__) + +#define PATH_HOSTS "InetDBase:Hosts" + +#else + +#define PATH_RESOLV_CONF "/etc/resolv.conf" +#ifdef ETC_INET +#define PATH_HOSTS "/etc/inet/hosts" +#else +#define PATH_HOSTS "/etc/hosts" +#endif + +#endif + +#define ARES_ID_KEY_LEN 31 + +#include "ares_ipv6.h" +#include "ares_llist.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifndef HAVE_WRITEV +# include "ares_writev.h" +# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt) +#endif + +struct ares_addr { + int family; + union { + struct in_addr addr4; + struct in6_addr addr6; + } addr; +}; +#define addrV4 addr.addr4 +#define addrV6 addr.addr6 + +struct query; + +struct send_request { + /* Remaining data to send */ + const unsigned char *data; + size_t len; + + /* The query for which we're sending this data */ + struct query* owner_query; + /* The buffer we're using, if we have our own copy of the packet */ + unsigned char *data_storage; + + /* Next request in queue */ + struct send_request *next; +}; + +struct server_state { + struct in_addr addr; + ares_socket_t udp_socket; + ares_socket_t tcp_socket; + + /* Mini-buffer for reading the length word */ + unsigned char tcp_lenbuf[2]; + int tcp_lenbuf_pos; + int tcp_length; + + /* Buffer for reading actual TCP data */ + unsigned char *tcp_buffer; + int tcp_buffer_pos; + + /* TCP output queue */ + struct send_request *qhead; + struct send_request *qtail; + + /* Which incarnation of this connection is this? We don't want to + * retransmit requests into the very same socket, but if the server + * closes on us and we re-open the connection, then we do want to + * re-send. */ + int tcp_connection_generation; + + /* Circular, doubly-linked list of outstanding queries to this server */ + struct list_node queries_to_server; + + /* Link back to owning channel */ + ares_channel channel; + + /* Is this server broken? We mark connections as broken when a + * request that is queued for sending times out. + */ + int is_broken; +}; + +/* State to represent a DNS query */ +struct query { + /* Query ID from qbuf, for faster lookup, and current timeout */ + unsigned short qid; + struct timeval timeout; + + /* + * Links for the doubly-linked lists in which we insert a query. + * These circular, doubly-linked lists that are hash-bucketed based + * the attributes we care about, help making most important + * operations O(1). + */ + struct list_node queries_by_qid; /* hopefully in same cache line as qid */ + struct list_node queries_by_timeout; + struct list_node queries_to_server; + struct list_node all_queries; + + /* Query buf with length at beginning, for TCP transmission */ + unsigned char *tcpbuf; + int tcplen; + + /* Arguments passed to ares_send() (qbuf points into tcpbuf) */ + const unsigned char *qbuf; + int qlen; + ares_callback callback; + void *arg; + + /* Query status */ + int try; /* Number of times we tried this query already. */ + int server; /* Server this query has last been sent to. */ + struct query_server_info *server_info; /* per-server state */ + int using_tcp; + int error_status; + int timeouts; /* number of timeouts we saw for this request */ +}; + +/* Per-server state for a query */ +struct query_server_info { + int skip_server; /* should we skip server, due to errors, etc? */ + int tcp_connection_generation; /* into which TCP connection did we send? */ +}; + +/* An IP address pattern; matches an IP address X if X & mask == addr */ +#define PATTERN_MASK 0x1 +#define PATTERN_CIDR 0x2 + +struct apattern { + union + { + struct in_addr addr4; + struct in6_addr addr6; + } addr; + union + { + struct in_addr addr4; + struct in6_addr addr6; + unsigned short bits; + } mask; + int family; + unsigned short type; +}; + +typedef struct rc4_key +{ + unsigned char state[256]; + unsigned char x; + unsigned char y; +} rc4_key; + +struct ares_channeldata { + /* Configuration data */ + int flags; + int timeout; /* in milliseconds */ + int tries; + int ndots; + int rotate; /* if true, all servers specified are used */ + int udp_port; + int tcp_port; + int socket_send_buffer_size; + int socket_receive_buffer_size; + char **domains; + int ndomains; + struct apattern *sortlist; + int nsort; + char *lookups; + + int optmask; /* the option bitfield passed in at init time */ + + /* Server addresses and communications state */ + struct server_state *servers; + int nservers; + + /* ID to use for next query */ + unsigned short next_id; + /* key to use when generating new ids */ + rc4_key id_key; + + /* Generation number to use for the next TCP socket open/close */ + int tcp_connection_generation; + + /* The time at which we last called process_timeouts(). Uses integer seconds + just to draw the line somewhere. */ + time_t last_timeout_processed; + + /* Last server we sent a query to. */ + int last_server; + + /* Circular, doubly-linked list of queries, bucketed various ways.... */ + /* All active queries in a single list: */ + struct list_node all_queries; + /* Queries bucketed by qid, for quickly dispatching DNS responses: */ +#define ARES_QID_TABLE_SIZE 2048 + struct list_node queries_by_qid[ARES_QID_TABLE_SIZE]; + /* Queries bucketed by timeout, for quickly handling timeouts: */ +#define ARES_TIMEOUT_TABLE_SIZE 1024 + struct list_node queries_by_timeout[ARES_TIMEOUT_TABLE_SIZE]; + + ares_sock_state_cb sock_state_cb; + void *sock_state_cb_data; + + ares_sock_create_callback sock_create_cb; + void *sock_create_cb_data; +}; + +/* return true if now is exactly check time or later */ +int ares__timedout(struct timeval *now, + struct timeval *check); +/* add the specific number of milliseconds to the time in the first argument */ +int ares__timeadd(struct timeval *now, + int millisecs); +/* return time offset between now and (future) check, in milliseconds */ +long ares__timeoffset(struct timeval *now, + struct timeval *check); +/* returns ARES_SUCCESS if library has been initialized */ +int ares_library_initialized(void); +void ares__rc4(rc4_key* key,unsigned char *buffer_ptr, int buffer_len); +void ares__send_query(ares_channel channel, struct query *query, + struct timeval *now); +void ares__close_sockets(ares_channel channel, struct server_state *server); +int ares__get_hostent(FILE *fp, int family, struct hostent **host); +int ares__read_line(FILE *fp, char **buf, size_t *bufsize); +void ares__free_query(struct query *query); +unsigned short ares__generate_new_id(rc4_key* key); +struct timeval ares__tvnow(void); +int ares__expand_name_for_response(const unsigned char *encoded, + const unsigned char *abuf, int alen, + char **s, long *enclen); +#if 0 /* Not used */ +long ares__tvdiff(struct timeval t1, struct timeval t2); +#endif + +#define ARES_SWAP_BYTE(a,b) \ + { unsigned char swapByte = *(a); *(a) = *(b); *(b) = swapByte; } + +#define SOCK_STATE_CALLBACK(c, s, r, w) \ + do { \ + if ((c)->sock_state_cb) \ + (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w)); \ + } while (0) + +#ifdef CURLDEBUG +/* This is low-level hard-hacking memory leak tracking and similar. Using the + libcurl lowlevel code from within library is ugly and only works when + c-ares is built and linked with a similarly curldebug-enabled libcurl, + but we do this anyway for convenience. */ +#include "../lib/memdebug.h" +#endif + +#endif /* __ARES_PRIVATE_H */ diff --git a/ares_process.3 b/ares_process.3 new file mode 100644 index 0000000..fa46852 --- /dev/null +++ b/ares_process.3 @@ -0,0 +1,81 @@ +.\" $Id: ares_process.3,v 1.3 2007-05-30 12:58:47 bagder Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_PROCESS 3 "25 July 1998" +.SH NAME +ares_process \- Process events for name resolution +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_process(ares_channel \fIchannel\fP, fd_set *\fIread_fds\fP, +.B fd_set *\fIwrite_fds\fP) +.fi +.PP +.B void ares_process_fd(ares_channel \fIchannel\fP, +.B ares_socket_t \fIread_fd\fP, +.B ares_socket_t \fIwrite_fd\fP) +.fi +.SH DESCRIPTION +The \fBares_process(3)\fP function handles input/output events and timeouts +associated with queries pending on the name service channel identified by +.IR channel . +The file descriptor sets pointed to by \fIread_fds\fP and \fIwrite_fds\fP +should have file descriptors set in them according to whether the file +descriptors specified by \fIares_fds(3)\fP are ready for reading and writing. +(The easiest way to determine this information is to invoke +.B select +with a timeout no greater than the timeout given by \fIares_timeout(3)\fP ). +.PP +The +.B ares_process +function will invoke callbacks for pending queries if they complete +successfully or fail. + +\fBares_process_fd(3)\fP works the same way but acts and operates only on the +specific file descriptors (sockets) you pass in to the function. Use +ARES_SOCKET_BAD for "no action". This function is of course provided to allow +users of c-ares to void select() in their applications and within c-ares. +.SS EXAMPLE +The following code fragment waits for all pending queries on a channel +to complete: +.PP +.RS +.nf +int nfds, count; +fd_set readers, writers; +struct timeval tv, *tvp; + +while (1) + { + FD_ZERO(&readers); + FD_ZERO(&writers); + nfds = ares_fds(channel, &readers, &writers); + if (nfds == 0) + break; + tvp = ares_timeout(channel, NULL, &tv); + count = select(nfds, &readers, &writers, NULL, tvp); + ares_process(channel, &readers, &writers); + } +.fi +.RE +.SH SEE ALSO +.BR ares_fds (3), +.BR ares_timeout (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_process.c b/ares_process.c new file mode 100644 index 0000000..6c305c7 --- /dev/null +++ b/ares_process.c @@ -0,0 +1,1170 @@ +/* $Id: ares_process.c,v 1.80 2009-12-29 02:04:17 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_SYS_UIO_H +# include <sys/uio.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETINET_TCP_H +# include <netinet/tcp.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_SYS_IOCTL_H +# include <sys/ioctl.h> +#endif +#ifdef NETWARE +# include <sys/filio.h> +#endif + +#include <assert.h> +#include <string.h> +#include <stdlib.h> +#include <fcntl.h> +#include <time.h> +#include <errno.h> + +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + + +static int try_again(int errnum); +static void write_tcp_data(ares_channel channel, fd_set *write_fds, + ares_socket_t write_fd, struct timeval *now); +static void read_tcp_data(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now); +static void read_udp_packets(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now); +static void advance_tcp_send_queue(ares_channel channel, int whichserver, + ssize_t num_bytes); +static void process_timeouts(ares_channel channel, struct timeval *now); +static void process_broken_connections(ares_channel channel, + struct timeval *now); +static void process_answer(ares_channel channel, unsigned char *abuf, + int alen, int whichserver, int tcp, + struct timeval *now); +static void handle_error(ares_channel channel, int whichserver, + struct timeval *now); +static void skip_server(ares_channel channel, struct query *query, + int whichserver); +static void next_server(ares_channel channel, struct query *query, + struct timeval *now); +static int configure_socket(ares_socket_t s, ares_channel channel); +static int open_tcp_socket(ares_channel channel, struct server_state *server); +static int open_udp_socket(ares_channel channel, struct server_state *server); +static int same_questions(const unsigned char *qbuf, int qlen, + const unsigned char *abuf, int alen); +static void end_query(ares_channel channel, struct query *query, int status, + unsigned char *abuf, int alen); + +/* return true if now is exactly check time or later */ +int ares__timedout(struct timeval *now, + struct timeval *check) +{ + long secs = (now->tv_sec - check->tv_sec); + + if(secs > 0) + return 1; /* yes, timed out */ + if(secs < 0) + return 0; /* nope, not timed out */ + + /* if the full seconds were identical, check the sub second parts */ + return (now->tv_usec - check->tv_usec >= 0); +} + +/* add the specific number of milliseconds to the time in the first argument */ +int ares__timeadd(struct timeval *now, + int millisecs) +{ + now->tv_sec += millisecs/1000; + now->tv_usec += (millisecs%1000)*1000; + + if(now->tv_usec >= 1000000) { + ++(now->tv_sec); + now->tv_usec -= 1000000; + } + + return 0; +} + +/* return time offset between now and (future) check, in milliseconds */ +long ares__timeoffset(struct timeval *now, + struct timeval *check) +{ + return (check->tv_sec - now->tv_sec)*1000 + + (check->tv_usec - now->tv_usec)/1000; +} + + +/* Something interesting happened on the wire, or there was a timeout. + * See what's up and respond accordingly. + */ +void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds) +{ + struct timeval now = ares__tvnow(); + + write_tcp_data(channel, write_fds, ARES_SOCKET_BAD, &now); + read_tcp_data(channel, read_fds, ARES_SOCKET_BAD, &now); + read_udp_packets(channel, read_fds, ARES_SOCKET_BAD, &now); + process_timeouts(channel, &now); + process_broken_connections(channel, &now); +} + +/* Something interesting happened on the wire, or there was a timeout. + * See what's up and respond accordingly. + */ +void ares_process_fd(ares_channel channel, + ares_socket_t read_fd, /* use ARES_SOCKET_BAD or valid + file descriptors */ + ares_socket_t write_fd) +{ + struct timeval now = ares__tvnow(); + + write_tcp_data(channel, NULL, write_fd, &now); + read_tcp_data(channel, NULL, read_fd, &now); + read_udp_packets(channel, NULL, read_fd, &now); + process_timeouts(channel, &now); +} + + +/* Return 1 if the specified error number describes a readiness error, or 0 + * otherwise. This is mostly for HP-UX, which could return EAGAIN or + * EWOULDBLOCK. See this man page + * + * http://devrsrc1.external.hp.com/STKS/cgi-bin/man2html?manpage=/usr/share/man/man2.Z/send.2 + */ +static int try_again(int errnum) +{ +#if !defined EWOULDBLOCK && !defined EAGAIN +#error "Neither EWOULDBLOCK nor EAGAIN defined" +#endif + switch (errnum) + { +#ifdef EWOULDBLOCK + case EWOULDBLOCK: + return 1; +#endif +#if defined EAGAIN && EAGAIN != EWOULDBLOCK + case EAGAIN: + return 1; +#endif + } + return 0; +} + +/* If any TCP sockets select true for writing, write out queued data + * we have for them. + */ +static void write_tcp_data(ares_channel channel, + fd_set *write_fds, + ares_socket_t write_fd, + struct timeval *now) +{ + struct server_state *server; + struct send_request *sendreq; + struct iovec *vec; + int i; + ssize_t scount; + ssize_t wcount; + size_t n; + + if(!write_fds && (write_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure server has data to send and is selected in write_fds or + write_fd. */ + server = &channel->servers[i]; + if (!server->qhead || server->tcp_socket == ARES_SOCKET_BAD || + server->is_broken) + continue; + + if(write_fds) { + if(!FD_ISSET(server->tcp_socket, write_fds)) + continue; + } + else { + if(server->tcp_socket != write_fd) + continue; + } + + if(write_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->tcp_socket, write_fds); + + /* Count the number of send queue items. */ + n = 0; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + n++; + + /* Allocate iovecs so we can send all our data at once. */ + vec = malloc(n * sizeof(struct iovec)); + if (vec) + { + /* Fill in the iovecs and send. */ + n = 0; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + { + vec[n].iov_base = (char *) sendreq->data; + vec[n].iov_len = sendreq->len; + n++; + } + wcount = (ssize_t)writev(server->tcp_socket, vec, (int)n); + free(vec); + if (wcount < 0) + { + if (!try_again(SOCKERRNO)) + handle_error(channel, i, now); + continue; + } + + /* Advance the send queue by as many bytes as we sent. */ + advance_tcp_send_queue(channel, i, wcount); + } + else + { + /* Can't allocate iovecs; just send the first request. */ + sendreq = server->qhead; + + scount = swrite(server->tcp_socket, sendreq->data, sendreq->len); + if (scount < 0) + { + if (!try_again(SOCKERRNO)) + handle_error(channel, i, now); + continue; + } + + /* Advance the send queue by as many bytes as we sent. */ + advance_tcp_send_queue(channel, i, scount); + } + } +} + +/* Consume the given number of bytes from the head of the TCP send queue. */ +static void advance_tcp_send_queue(ares_channel channel, int whichserver, + ssize_t num_bytes) +{ + struct send_request *sendreq; + struct server_state *server = &channel->servers[whichserver]; + while (num_bytes > 0) + { + sendreq = server->qhead; + if ((size_t)num_bytes >= sendreq->len) + { + num_bytes -= sendreq->len; + server->qhead = sendreq->next; + if (server->qhead == NULL) + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 0); + server->qtail = NULL; + } + if (sendreq->data_storage != NULL) + free(sendreq->data_storage); + free(sendreq); + } + else + { + sendreq->data += num_bytes; + sendreq->len -= num_bytes; + num_bytes = 0; + } + } +} + +/* If any TCP socket selects true for reading, read some data, + * allocate a buffer if we finish reading the length word, and process + * a packet if we finish reading one. + */ +static void read_tcp_data(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now) +{ + struct server_state *server; + int i; + ssize_t count; + + if(!read_fds && (read_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure the server has a socket and is selected in read_fds. */ + server = &channel->servers[i]; + if (server->tcp_socket == ARES_SOCKET_BAD || server->is_broken) + continue; + + if(read_fds) { + if(!FD_ISSET(server->tcp_socket, read_fds)) + continue; + } + else { + if(server->tcp_socket != read_fd) + continue; + } + + if(read_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->tcp_socket, read_fds); + + if (server->tcp_lenbuf_pos != 2) + { + /* We haven't yet read a length word, so read that (or + * what's left to read of it). + */ + count = sread(server->tcp_socket, + server->tcp_lenbuf + server->tcp_lenbuf_pos, + 2 - server->tcp_lenbuf_pos); + if (count <= 0) + { + if (!(count == -1 && try_again(SOCKERRNO))) + handle_error(channel, i, now); + continue; + } + + server->tcp_lenbuf_pos += (int)count; + if (server->tcp_lenbuf_pos == 2) + { + /* We finished reading the length word. Decode the + * length and allocate a buffer for the data. + */ + server->tcp_length = server->tcp_lenbuf[0] << 8 + | server->tcp_lenbuf[1]; + server->tcp_buffer = malloc(server->tcp_length); + if (!server->tcp_buffer) + handle_error(channel, i, now); + server->tcp_buffer_pos = 0; + } + } + else + { + /* Read data into the allocated buffer. */ + count = sread(server->tcp_socket, + server->tcp_buffer + server->tcp_buffer_pos, + server->tcp_length - server->tcp_buffer_pos); + if (count <= 0) + { + if (!(count == -1 && try_again(SOCKERRNO))) + handle_error(channel, i, now); + continue; + } + + server->tcp_buffer_pos += (int)count; + if (server->tcp_buffer_pos == server->tcp_length) + { + /* We finished reading this answer; process it and + * prepare to read another length word. + */ + process_answer(channel, server->tcp_buffer, server->tcp_length, + i, 1, now); + if (server->tcp_buffer) + free(server->tcp_buffer); + server->tcp_buffer = NULL; + server->tcp_lenbuf_pos = 0; + server->tcp_buffer_pos = 0; + } + } + } +} + +/* If any UDP sockets select true for reading, process them. */ +static void read_udp_packets(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now) +{ + struct server_state *server; + int i; + ssize_t count; + unsigned char buf[PACKETSZ + 1]; +#ifdef HAVE_RECVFROM + struct sockaddr_in from; + ares_socklen_t fromlen; +#endif + + if(!read_fds && (read_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure the server has a socket and is selected in read_fds. */ + server = &channel->servers[i]; + + if (server->udp_socket == ARES_SOCKET_BAD || server->is_broken) + continue; + + if(read_fds) { + if(!FD_ISSET(server->udp_socket, read_fds)) + continue; + } + else { + if(server->udp_socket != read_fd) + continue; + } + + if(read_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->udp_socket, read_fds); + + /* To reduce event loop overhead, read and process as many + * packets as we can. */ + do { +#ifdef HAVE_RECVFROM + fromlen = sizeof(from); + count = (ssize_t)recvfrom(server->udp_socket, (void *)buf, sizeof(buf), + 0, (struct sockaddr *)&from, &fromlen); +#else + count = sread(server->udp_socket, buf, sizeof(buf)); +#endif + if (count == -1 && try_again(SOCKERRNO)) + continue; + else if (count <= 0) + handle_error(channel, i, now); +#ifdef HAVE_RECVFROM + else if (from.sin_addr.s_addr != server->addr.s_addr) + /* Address response came from did not match the address + * we sent the request to. Someone may be attempting + * to perform a cache poisoning attack */ + break; +#endif + else + process_answer(channel, buf, (int)count, i, 0, now); + } while (count > 0); + } +} + +/* If any queries have timed out, note the timeout and move them on. */ +static void process_timeouts(ares_channel channel, struct timeval *now) +{ + time_t t; /* the time of the timeouts we're processing */ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + /* Process all the timeouts that have fired since the last time we + * processed timeouts. If things are going well, then we'll have + * hundreds/thousands of queries that fall into future buckets, and + * only a handful of requests that fall into the "now" bucket, so + * this should be quite quick. + */ + for (t = channel->last_timeout_processed; t <= now->tv_sec; t++) + { + list_head = &(channel->queries_by_timeout[t % ARES_TIMEOUT_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* in case the query gets deleted */ + if (query->timeout.tv_sec && ares__timedout(now, &query->timeout)) + { + query->error_status = ARES_ETIMEOUT; + ++query->timeouts; + next_server(channel, query, now); + } + } + } + channel->last_timeout_processed = now->tv_sec; +} + +/* Handle an answer from a server. */ +static void process_answer(ares_channel channel, unsigned char *abuf, + int alen, int whichserver, int tcp, + struct timeval *now) +{ + int tc, rcode; + unsigned short id; + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + /* If there's no room in the answer for a header, we can't do much + * with it. */ + if (alen < HFIXEDSZ) + return; + + /* Grab the query ID, truncate bit, and response code from the packet. */ + id = DNS_HEADER_QID(abuf); + tc = DNS_HEADER_TC(abuf); + rcode = DNS_HEADER_RCODE(abuf); + + /* Find the query corresponding to this packet. The queries are + * hashed/bucketed by query id, so this lookup should be quick. + * Note that both the query id and the questions must be the same; + * when the query id wraps around we can have multiple outstanding + * queries with the same query id, so we need to check both the id and + * question. + */ + query = NULL; + list_head = &(channel->queries_by_qid[id % ARES_QID_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + struct query *q = list_node->data; + if ((q->qid == id) && same_questions(q->qbuf, q->qlen, abuf, alen)) + { + query = q; + break; + } + } + if (!query) + return; + + /* If we got a truncated UDP packet and are not ignoring truncation, + * don't accept the packet, and switch the query to TCP if we hadn't + * done so already. + */ + if ((tc || alen > PACKETSZ) && !tcp && !(channel->flags & ARES_FLAG_IGNTC)) + { + if (!query->using_tcp) + { + query->using_tcp = 1; + ares__send_query(channel, query, now); + } + return; + } + + /* Limit alen to PACKETSZ if we aren't using TCP (only relevant if we + * are ignoring truncation. + */ + if (alen > PACKETSZ && !tcp) + alen = PACKETSZ; + + /* If we aren't passing through all error packets, discard packets + * with SERVFAIL, NOTIMP, or REFUSED response codes. + */ + if (!(channel->flags & ARES_FLAG_NOCHECKRESP)) + { + if (rcode == SERVFAIL || rcode == NOTIMP || rcode == REFUSED) + { + skip_server(channel, query, whichserver); + if (query->server == whichserver) + next_server(channel, query, now); + return; + } + } + + end_query(channel, query, ARES_SUCCESS, abuf, alen); +} + +/* Close all the connections that are no longer usable. */ +static void process_broken_connections(ares_channel channel, + struct timeval *now) +{ + int i; + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + if (server->is_broken) + { + handle_error(channel, i, now); + } + } +} + +static void handle_error(ares_channel channel, int whichserver, + struct timeval *now) +{ + struct server_state *server; + struct query *query; + struct list_node list_head; + struct list_node* list_node; + + server = &channel->servers[whichserver]; + + /* Reset communications with this server. */ + ares__close_sockets(channel, server); + + /* Tell all queries talking to this server to move on and not try + * this server again. We steal the current list of queries that were + * in-flight to this server, since when we call next_server this can + * cause the queries to be re-sent to this server, which will + * re-insert these queries in that same server->queries_to_server + * list. + */ + ares__init_list_head(&list_head); + ares__swap_lists(&list_head, &(server->queries_to_server)); + for (list_node = list_head.next; list_node != &list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* in case the query gets deleted */ + assert(query->server == whichserver); + skip_server(channel, query, whichserver); + next_server(channel, query, now); + } + /* Each query should have removed itself from our temporary list as + * it re-sent itself or finished up... + */ + assert(ares__is_list_empty(&list_head)); +} + +static void skip_server(ares_channel channel, struct query *query, + int whichserver) { + /* The given server gave us problems with this query, so if we have + * the luxury of using other servers, then let's skip the + * potentially broken server and just use the others. If we only + * have one server and we need to retry then we should just go ahead + * and re-use that server, since it's our only hope; perhaps we + * just got unlucky, and retrying will work (eg, the server timed + * out our TCP connection just as we were sending another request). + */ + if (channel->nservers > 1) + { + query->server_info[whichserver].skip_server = 1; + } +} + +static void next_server(ares_channel channel, struct query *query, + struct timeval *now) +{ + /* We need to try each server channel->tries times. We have channel->nservers + * servers to try. In total, we need to do channel->nservers * channel->tries + * attempts. Use query->try to remember how many times we already attempted + * this query. Use modular arithmetic to find the next server to try. */ + while (++(query->try) < (channel->nservers * channel->tries)) + { + struct server_state *server; + + /* Move on to the next server. */ + query->server = (query->server + 1) % channel->nservers; + server = &channel->servers[query->server]; + + /* We don't want to use this server if (1) we decided this + * connection is broken, and thus about to be closed, (2) + * we've decided to skip this server because of earlier + * errors we encountered, or (3) we already sent this query + * over this exact connection. + */ + if (!server->is_broken && + !query->server_info[query->server].skip_server && + !(query->using_tcp && + (query->server_info[query->server].tcp_connection_generation == + server->tcp_connection_generation))) + { + ares__send_query(channel, query, now); + return; + } + + /* You might think that with TCP we only need one try. However, + * even when using TCP, servers can time-out our connection just + * as we're sending a request, or close our connection because + * they die, or never send us a reply because they get wedged or + * tickle a bug that drops our request. + */ + } + + /* If we are here, all attempts to perform query failed. */ + end_query(channel, query, query->error_status, NULL, 0); +} + +void ares__send_query(ares_channel channel, struct query *query, + struct timeval *now) +{ + struct send_request *sendreq; + struct server_state *server; + int timeplus; + + server = &channel->servers[query->server]; + if (query->using_tcp) + { + /* Make sure the TCP socket for this server is set up and queue + * a send request. + */ + if (server->tcp_socket == ARES_SOCKET_BAD) + { + if (open_tcp_socket(channel, server) == -1) + { + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + sendreq = calloc(1, sizeof(struct send_request)); + if (!sendreq) + { + end_query(channel, query, ARES_ENOMEM, NULL, 0); + return; + } + /* To make the common case fast, we avoid copies by using the + * query's tcpbuf for as long as the query is alive. In the rare + * case where the query ends while it's queued for transmission, + * then we give the sendreq its own copy of the request packet + * and put it in sendreq->data_storage. + */ + sendreq->data_storage = NULL; + sendreq->data = query->tcpbuf; + sendreq->len = query->tcplen; + sendreq->owner_query = query; + sendreq->next = NULL; + if (server->qtail) + server->qtail->next = sendreq; + else + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 1); + server->qhead = sendreq; + } + server->qtail = sendreq; + query->server_info[query->server].tcp_connection_generation = + server->tcp_connection_generation; + } + else + { + if (server->udp_socket == ARES_SOCKET_BAD) + { + if (open_udp_socket(channel, server) == -1) + { + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + if (swrite(server->udp_socket, query->qbuf, query->qlen) == -1) + { + /* FIXME: Handle EAGAIN here since it likely can happen. */ + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + timeplus = channel->timeout << (query->try / channel->nservers); + timeplus = (timeplus * (9 + (rand () & 7))) / 16; + query->timeout = *now; + ares__timeadd(&query->timeout, + timeplus); + /* Keep track of queries bucketed by timeout, so we can process + * timeout events quickly. + */ + ares__remove_from_list(&(query->queries_by_timeout)); + ares__insert_in_list( + &(query->queries_by_timeout), + &(channel->queries_by_timeout[query->timeout.tv_sec % + ARES_TIMEOUT_TABLE_SIZE])); + + /* Keep track of queries bucketed by server, so we can process server + * errors quickly. + */ + ares__remove_from_list(&(query->queries_to_server)); + ares__insert_in_list(&(query->queries_to_server), + &(server->queries_to_server)); +} + +/* + * setsocknonblock sets the given socket to either blocking or non-blocking mode + * based on the 'nonblock' boolean argument. This function is highly portable. + */ +static int setsocknonblock(ares_socket_t sockfd, /* operate on this */ + int nonblock /* TRUE or FALSE */) +{ +#if defined(USE_BLOCKING_SOCKETS) + + return 0; /* returns success */ + +#elif defined(HAVE_FCNTL_O_NONBLOCK) + + /* most recent unix versions */ + int flags; + flags = fcntl(sockfd, F_GETFL, 0); + if (FALSE != nonblock) + return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK); + else + return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK)); + +#elif defined(HAVE_IOCTL_FIONBIO) + + /* older unix versions */ + int flags; + flags = nonblock; + return ioctl(sockfd, FIONBIO, &flags); + +#elif defined(HAVE_IOCTLSOCKET_FIONBIO) + +#ifdef WATT32 + char flags; +#else + /* Windows */ + unsigned long flags; +#endif + flags = nonblock; + return ioctlsocket(sockfd, FIONBIO, &flags); + +#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO) + + /* Amiga */ + return IoctlSocket(sockfd, FIONBIO, (long)nonblock); + +#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK) + + /* BeOS */ + long b = nonblock ? 1 : 0; + return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b)); + +#else +# error "no non-blocking method was found/used/set" +#endif +} + +static int configure_socket(ares_socket_t s, ares_channel channel) +{ + setsocknonblock(s, TRUE); + +#if defined(FD_CLOEXEC) && !defined(MSDOS) + /* Configure the socket fd as close-on-exec. */ + if (fcntl(s, F_SETFD, FD_CLOEXEC) == -1) + return -1; +#endif + + /* Set the socket's send and receive buffer sizes. */ + if ((channel->socket_send_buffer_size > 0) && + setsockopt(s, SOL_SOCKET, SO_SNDBUF, + (void *)&channel->socket_send_buffer_size, + sizeof(channel->socket_send_buffer_size)) == -1) + return -1; + + if ((channel->socket_receive_buffer_size > 0) && + setsockopt(s, SOL_SOCKET, SO_RCVBUF, + (void *)&channel->socket_receive_buffer_size, + sizeof(channel->socket_receive_buffer_size)) == -1) + return -1; + + return 0; + } + +static int open_tcp_socket(ares_channel channel, struct server_state *server) +{ + ares_socket_t s; + int opt; + struct sockaddr_in sockin; + + /* Acquire a socket. */ + s = socket(AF_INET, SOCK_STREAM, 0); + if (s == ARES_SOCKET_BAD) + return -1; + + /* Configure it. */ + if (configure_socket(s, channel) < 0) + { + sclose(s); + return -1; + } + +#ifdef TCP_NODELAY + /* + * Disable the Nagle algorithm (only relevant for TCP sockets, and thus not in + * configure_socket). In general, in DNS lookups we're pretty much interested + * in firing off a single request and then waiting for a reply, so batching + * isn't very interesting in general. + */ + opt = 1; + if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, + (void *)&opt, sizeof(opt)) == -1) + { + sclose(s); + return -1; + } +#endif + + /* Connect to the server. */ + memset(&sockin, 0, sizeof(sockin)); + sockin.sin_family = AF_INET; + sockin.sin_addr = server->addr; + sockin.sin_port = (unsigned short)(channel->tcp_port & 0xffff); + if (connect(s, (struct sockaddr *) &sockin, sizeof(sockin)) == -1) + { + int err = SOCKERRNO; + + if (err != EINPROGRESS && err != EWOULDBLOCK) + { + sclose(s); + return -1; + } + } + + if (channel->sock_create_cb) + { + int err = channel->sock_create_cb(s, SOCK_STREAM, + channel->sock_create_cb_data); + if (err < 0) + { + sclose(s); + return err; + } + } + + SOCK_STATE_CALLBACK(channel, s, 1, 0); + server->tcp_buffer_pos = 0; + server->tcp_socket = s; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + return 0; +} + +static int open_udp_socket(ares_channel channel, struct server_state *server) +{ + ares_socket_t s; + struct sockaddr_in sockin; + + /* Acquire a socket. */ + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s == ARES_SOCKET_BAD) + return -1; + + /* Set the socket non-blocking. */ + if (configure_socket(s, channel) < 0) + { + sclose(s); + return -1; + } + + /* Connect to the server. */ + memset(&sockin, 0, sizeof(sockin)); + sockin.sin_family = AF_INET; + sockin.sin_addr = server->addr; + sockin.sin_port = (unsigned short)(channel->udp_port & 0xffff); + if (connect(s, (struct sockaddr *) &sockin, sizeof(sockin)) == -1) + { + int err = SOCKERRNO; + + if (err != EINPROGRESS && err != EWOULDBLOCK) + { + sclose(s); + return -1; + } + } + + if (channel->sock_create_cb) + { + int err = channel->sock_create_cb(s, SOCK_DGRAM, + channel->sock_create_cb_data); + if (err < 0) + { + sclose(s); + return err; + } + } + + SOCK_STATE_CALLBACK(channel, s, 1, 0); + + server->udp_socket = s; + return 0; +} + +static int same_questions(const unsigned char *qbuf, int qlen, + const unsigned char *abuf, int alen) +{ + struct { + const unsigned char *p; + int qdcount; + char *name; + long namelen; + int type; + int dnsclass; + } q, a; + int i, j; + + if (qlen < HFIXEDSZ || alen < HFIXEDSZ) + return 0; + + /* Extract qdcount from the request and reply buffers and compare them. */ + q.qdcount = DNS_HEADER_QDCOUNT(qbuf); + a.qdcount = DNS_HEADER_QDCOUNT(abuf); + if (q.qdcount != a.qdcount) + return 0; + + /* For each question in qbuf, find it in abuf. */ + q.p = qbuf + HFIXEDSZ; + for (i = 0; i < q.qdcount; i++) + { + /* Decode the question in the query. */ + if (ares_expand_name(q.p, qbuf, qlen, &q.name, &q.namelen) + != ARES_SUCCESS) + return 0; + q.p += q.namelen; + if (q.p + QFIXEDSZ > qbuf + qlen) + { + free(q.name); + return 0; + } + q.type = DNS_QUESTION_TYPE(q.p); + q.dnsclass = DNS_QUESTION_CLASS(q.p); + q.p += QFIXEDSZ; + + /* Search for this question in the answer. */ + a.p = abuf + HFIXEDSZ; + for (j = 0; j < a.qdcount; j++) + { + /* Decode the question in the answer. */ + if (ares_expand_name(a.p, abuf, alen, &a.name, &a.namelen) + != ARES_SUCCESS) + { + free(q.name); + return 0; + } + a.p += a.namelen; + if (a.p + QFIXEDSZ > abuf + alen) + { + free(q.name); + free(a.name); + return 0; + } + a.type = DNS_QUESTION_TYPE(a.p); + a.dnsclass = DNS_QUESTION_CLASS(a.p); + a.p += QFIXEDSZ; + + /* Compare the decoded questions. */ + if (strcasecmp(q.name, a.name) == 0 && q.type == a.type + && q.dnsclass == a.dnsclass) + { + free(a.name); + break; + } + free(a.name); + } + + free(q.name); + if (j == a.qdcount) + return 0; + } + return 1; +} + +static void end_query (ares_channel channel, struct query *query, int status, + unsigned char *abuf, int alen) +{ + int i; + + /* First we check to see if this query ended while one of our send + * queues still has pointers to it. + */ + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + struct send_request *sendreq; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + if (sendreq->owner_query == query) + { + sendreq->owner_query = NULL; + assert(sendreq->data_storage == NULL); + if (status == ARES_SUCCESS) + { + /* We got a reply for this query, but this queued + * sendreq points into this soon-to-be-gone query's + * tcpbuf. Probably this means we timed out and queued + * the query for retransmission, then received a + * response before actually retransmitting. This is + * perfectly fine, so we want to keep the connection + * running smoothly if we can. But in the worst case + * we may have sent only some prefix of the query, + * with some suffix of the query left to send. Also, + * the buffer may be queued on multiple queues. To + * prevent dangling pointers to the query's tcpbuf and + * handle these cases, we just give such sendreqs + * their own copy of the query packet. + */ + sendreq->data_storage = malloc(sendreq->len); + if (sendreq->data_storage != NULL) + { + memcpy(sendreq->data_storage, sendreq->data, sendreq->len); + sendreq->data = sendreq->data_storage; + } + } + if ((status != ARES_SUCCESS) || (sendreq->data_storage == NULL)) + { + /* We encountered an error (probably a timeout, + * suggesting the DNS server we're talking to is + * probably unreachable, wedged, or severely + * overloaded) or we couldn't copy the request, so + * mark the connection as broken. When we get to + * process_broken_connections() we'll close the + * connection and try to re-send requests to another + * server. + */ + server->is_broken = 1; + /* Just to be paranoid, zero out this sendreq... */ + sendreq->data = NULL; + sendreq->len = 0; + } + } + } + + /* Invoke the callback */ + query->callback(query->arg, status, query->timeouts, abuf, alen); + ares__free_query(query); + + /* Simple cleanup policy: if no queries are remaining, close all + * network sockets unless STAYOPEN is set. + */ + if (!(channel->flags & ARES_FLAG_STAYOPEN) && + ares__is_list_empty(&(channel->all_queries))) + { + for (i = 0; i < channel->nservers; i++) + ares__close_sockets(channel, &channel->servers[i]); + } +} + +void ares__free_query(struct query *query) +{ + /* Remove the query from all the lists in which it is linked */ + ares__remove_from_list(&(query->queries_by_qid)); + ares__remove_from_list(&(query->queries_by_timeout)); + ares__remove_from_list(&(query->queries_to_server)); + ares__remove_from_list(&(query->all_queries)); + /* Zero out some important stuff, to help catch bugs */ + query->callback = NULL; + query->arg = NULL; + /* Deallocate the memory associated with the query */ + free(query->tcpbuf); + free(query->server_info); + free(query); +} diff --git a/ares_query.3 b/ares_query.3 new file mode 100644 index 0000000..7ffbd47 --- /dev/null +++ b/ares_query.3 @@ -0,0 +1,147 @@ +.\" $Id: ares_query.3,v 1.2 2007-09-28 14:46:51 sesse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_QUERY 3 "24 July 1998" +.SH NAME +ares_query \- Initiate a single-question DNS query +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, unsigned char *\fIabuf\fP, int \fIalen\fP) +.PP +.B void ares_query(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIdnsclass\fP, int \fItype\fP, ares_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_query +function initiates a single-question DNS query on the name service +channel identified by +.IR channel . +The parameter +.I name +gives the query name as a NUL-terminated C string of period-separated +labels optionally ending with a period; periods and backslashes within +a label must be escaped with a backslash. The parameters +.I dnsclass +and +.I type +give the class and type of the query using the values defined in +.BR <arpa/nameser.h> . +When the query is complete or has failed, the ares library will invoke +.IR callback . +Completion or failure of the query may happen immediately, or may +happen during a later call to +.BR ares_process (3) +or +.BR ares_destroy (3). +.PP +The callback argument +.I arg +is copied from the +.B ares_query +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The query completed successfully. +.TP 19 +.B ARES_ENODATA +The query completed but contains no answers. +.TP 19 +.B ARES_EFORMERR +The query completed but the server claims that the query was +malformatted. +.TP 19 +.B ARES_ESERVFAIL +The query completed but the server claims to have experienced a +failure. (This code can only occur if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_ENOTFOUND +The query completed but the queried-for domain name was not found. +.TP 19 +.B ARES_ENOTIMP +The query completed but the server does not implement the operation +requested by the query. (This code can only occur if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_EREFUSED +The query completed but the server refused the query. (This code can +only occur if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_EBADNAME +The query name +.I name +could not be encoded as a domain name, either because it contained a +zero-length label or because it contained a label of more than 63 +characters. +.TP 19 +.B ARES_ETIMEOUT +No name servers responded within the timeout period. +.TP 19 +.B ARES_ECONNREFUSED +No name servers could be contacted. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +If the query completed (even if there was something wrong with it, as +indicated by some of the above error codes), the callback argument +.I abuf +points to a result buffer of length +.IR alen . +If the query did not complete, +.I abuf +will be NULL and +.I alen +will be 0. +.SH SEE ALSO +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_query.c b/ares_query.c new file mode 100644 index 0000000..7052d7a --- /dev/null +++ b/ares_query.c @@ -0,0 +1,184 @@ +/* $Id: ares_query.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +struct qquery { + ares_callback callback; + void *arg; +}; + +static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen); + +void ares__rc4(rc4_key* key, unsigned char *buffer_ptr, int buffer_len) +{ + unsigned char x; + unsigned char y; + unsigned char* state; + unsigned char xorIndex; + short counter; + + x = key->x; + y = key->y; + + state = &key->state[0]; + for(counter = 0; counter < buffer_len; counter ++) + { + x = (unsigned char)((x + 1) % 256); + y = (unsigned char)((state[x] + y) % 256); + ARES_SWAP_BYTE(&state[x], &state[y]); + + xorIndex = (unsigned char)((state[x] + state[y]) % 256); + + buffer_ptr[counter] = (unsigned char)(buffer_ptr[counter]^state[xorIndex]); + } + key->x = x; + key->y = y; +} + +static struct query* find_query_by_id(ares_channel channel, unsigned short id) +{ + unsigned short qid; + struct list_node* list_head; + struct list_node* list_node; + DNS_HEADER_SET_QID(((unsigned char*)&qid), id); + + /* Find the query corresponding to this packet. */ + list_head = &(channel->queries_by_qid[qid % ARES_QID_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + struct query *q = list_node->data; + if (q->qid == qid) + return q; + } + return NULL; +} + + +/* a unique query id is generated using an rc4 key. Since the id may already + be used by a running query (as infrequent as it may be), a lookup is + performed per id generation. In practice this search should happen only + once per newly generated id +*/ +static unsigned short generate_unique_id(ares_channel channel) +{ + unsigned short id; + + do { + id = ares__generate_new_id(&channel->id_key); + } while (find_query_by_id(channel, id)); + + return (unsigned short)id; +} + +void ares_query(ares_channel channel, const char *name, int dnsclass, + int type, ares_callback callback, void *arg) +{ + struct qquery *qquery; + unsigned char *qbuf; + int qlen, rd, status; + + /* Compose the query. */ + rd = !(channel->flags & ARES_FLAG_NORECURSE); + status = ares_mkquery(name, dnsclass, type, channel->next_id, rd, &qbuf, + &qlen); + if (status != ARES_SUCCESS) + { + if (qbuf != NULL) free(qbuf); + callback(arg, status, 0, NULL, 0); + return; + } + + channel->next_id = generate_unique_id(channel); + + /* Allocate and fill in the query structure. */ + qquery = malloc(sizeof(struct qquery)); + if (!qquery) + { + ares_free_string(qbuf); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + qquery->callback = callback; + qquery->arg = arg; + + /* Send it off. qcallback will be called when we get an answer. */ + ares_send(channel, qbuf, qlen, qcallback, qquery); + ares_free_string(qbuf); +} + +static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen) +{ + struct qquery *qquery = (struct qquery *) arg; + unsigned int ancount; + int rcode; + + if (status != ARES_SUCCESS) + qquery->callback(qquery->arg, status, timeouts, abuf, alen); + else + { + /* Pull the response code and answer count from the packet. */ + rcode = DNS_HEADER_RCODE(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + + /* Convert errors. */ + switch (rcode) + { + case NOERROR: + status = (ancount > 0) ? ARES_SUCCESS : ARES_ENODATA; + break; + case FORMERR: + status = ARES_EFORMERR; + break; + case SERVFAIL: + status = ARES_ESERVFAIL; + break; + case NXDOMAIN: + status = ARES_ENOTFOUND; + break; + case NOTIMP: + status = ARES_ENOTIMP; + break; + case REFUSED: + status = ARES_EREFUSED; + break; + } + qquery->callback(qquery->arg, status, timeouts, abuf, alen); + } + free(qquery); +} diff --git a/ares_rules.h b/ares_rules.h new file mode 100644 index 0000000..65bc1eb --- /dev/null +++ b/ares_rules.h @@ -0,0 +1,145 @@ +#ifndef __CARES_RULES_H +#define __CARES_RULES_H + +/* $Id: ares_rules.h,v 1.3 2009-10-27 16:56:20 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* COMPILE TIME SANITY CHECKS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * All checks done in this file are intentionally placed in a public + * header file which is pulled by ares.h when an application is + * being built using an already built c-ares library. Additionally + * this file is also included and used when building the library. + * + * If compilation fails on this file it is certainly sure that the + * problem is elsewhere. It could be a problem in the ares_build.h + * header file, or simply that you are using different compilation + * settings than those used to build the library. + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * Do not deactivate any check, these are done to make sure that the + * library is properly built and used. + * + * You can find further help on the c-ares development mailing list: + * http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * NOTE 2 + * ------ + * + * Some of the following compile time checks are based on the fact + * that the dimension of a constant array can not be a negative one. + * In this way if the compile time verification fails, the compilation + * will fail issuing an error. The error description wording is compiler + * dependent but it will be quite similar to one of the following: + * + * "negative subscript or subscript is too large" + * "array must have at least one element" + * "-1 is an illegal array size" + * "size of array is negative" + * + * If you are building an application which tries to use an already + * built c-ares library and you are getting this kind of errors on + * this file, it is a clear indication that there is a mismatch between + * how the library was built and how you are trying to use it for your + * application. Your already compiled or binary library provider is the + * only one who can give you the details you need to properly use it. + */ + +/* + * Verify that some macros are actually defined. + */ + +#ifndef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_LONG_is_missing +#endif + +#ifndef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T definition is missing!" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_is_missing +#endif + +#ifndef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_is_missing +#endif + +/* + * Macros private to this header file. + */ + +#define CareschkszEQ(t, s) sizeof(t) == s ? 1 : -1 + +#define CareschkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 + +/* + * Verify that the size previously defined and expected for long + * is the same as the one reported by sizeof() at compile time. + */ + +typedef char + __cares_rule_01__ + [CareschkszEQ(long, CARES_SIZEOF_LONG)]; + +/* + * Verify that the size previously defined and expected for + * ares_socklen_t is actually the the same as the one reported + * by sizeof() at compile time. + */ + +typedef char + __cares_rule_02__ + [CareschkszEQ(ares_socklen_t, CARES_SIZEOF_ARES_SOCKLEN_T)]; + +/* + * Verify at compile time that the size of ares_socklen_t as reported + * by sizeof() is greater or equal than the one reported for int for + * the current compilation. + */ + +typedef char + __cares_rule_03__ + [CareschkszGE(ares_socklen_t, int)]; + +/* ================================================================ */ +/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */ +/* ================================================================ */ + +/* + * Get rid of macros private to this header file. + */ + +#undef CareschkszEQ +#undef CareschkszGE + +/* + * Get rid of macros not intended to exist beyond this point. + */ + +#undef CARES_PULL_WS2TCPIP_H +#undef CARES_PULL_SYS_TYPES_H +#undef CARES_PULL_SYS_SOCKET_H + +#undef CARES_TYPEOF_ARES_SOCKLEN_T + +#endif /* __CARES_RULES_H */ diff --git a/ares_save_options.3 b/ares_save_options.3 new file mode 100644 index 0000000..268327c --- /dev/null +++ b/ares_save_options.3 @@ -0,0 +1,68 @@ +.\" $Id: ares_save_options.3,v 1.3 2009-11-23 00:57:51 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_SAVE_OPTIONS 3 "1 June 2007" +.SH NAME +ares_save_options \- Save configuration values obtained from initialized ares_channel +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B int ares_save_options(ares_channel \fIchannel\fP, struct ares_options *\fIoptions\fP, int *\fIoptmask\fP) +.fi +.SH DESCRIPTION +The \fBares_save_options(3)\fP function saves the channel data identified by +.IR channel , +into the options struct identified by +.IR options , +and saves the mask of options which are set to the integer +pointer (passed by reference) identified by +.IR optmask . + +The resultant options and optmask are then able to be +passed directly to ares_init_options. When the options +are no longer needed, ares_destroy_options should be called +to free any associated memory. +.SH RETURN VALUES +.B ares_save_options(3) +can return any of the following values: +.TP 15 +.B ARES_SUCCESS +The channel data was successfuly stored +.TP 15 +.B ARES_ENOMEM +The memory was exhausted +.TP 15 +.B ARES_ENODATA +The channel data identified by +.IR channel +were invalid. +.SH NOTE +Since c-ares 1.6.0 the ares_options struct has been "locked" meaning that it +won't be extended to cover new funtions. This function will remain +functioning, but it can only return config data that can be represented in +this config struct, which may no longer be the complete set of config +options. \fBares_dup(3)\fP will not have that restriction. +.SH SEE ALSO +.BR ares_destroy_options (3), +.BR ares_init_options (3), +.BR ares_dup (3) +.SH AVAILABILITY +ares_save_options(3) was added in c-ares 1.4.0 +.SH AUTHOR +Brad House +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_search.3 b/ares_search.3 new file mode 100644 index 0000000..8ee953d --- /dev/null +++ b/ares_search.3 @@ -0,0 +1,149 @@ +.\" $Id: ares_search.3,v 1.2 2007-09-28 14:46:51 sesse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_SEARCH 3 "24 July 1998" +.SH NAME +ares_search \- Initiate a DNS query with domain search +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, unsigned char *\fIabuf\fP, int \fIalen\fP) +.PP +.B void ares_search(ares_channel \fIchannel\fP, const char *\fIname\fP, +.B int \fIdnsclass\fP, int \fItype\fP, ares_callback \fIcallback\fP, +.B void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_search +function initiates a series of single-question DNS queries on the name +service channel identified by +.IR channel , +using the channel's search domains as well as a host alias file given +by the HOSTALIAS environment variable. The parameter +.I name +gives the alias name or the base of the query name as a NUL-terminated +C string of period-separated labels; if it ends with a period, the +channel's search domains will not be used. Periods and backslashes +within a label must be escaped with a backslash. The parameters +.I dnsclass +and +.I type +give the class and type of the query using the values defined in +.BR <arpa/nameser.h> . +When the query sequence is complete or has failed, the ares library +will invoke +.IR callback . +Completion or failure of the query sequence may happen immediately, or +may happen during a later call to +.BR ares_process (3) +or +.BR ares_destroy (3). +.PP +The callback argument +.I arg +is copied from the +.B ares_search +argument +.IR arg . +The callback argument +.I status +indicates whether the query sequence ended with a successful query +and, if not, how the query sequence failed. It may have any of the +following values: +.TP 19 +.B ARES_SUCCESS +A query completed successfully. +.TP 19 +.B ARES_ENODATA +No query completed successfully; when the query was tried without a +search domain appended, a response was returned with no answers. +.TP 19 +.B ARES_EFORMERR +A query completed but the server claimed that the query was +malformatted. +.TP 19 +.B ARES_ESERVFAIL +No query completed successfully; when the query was tried without a +search domain appended, the server claimed to have experienced a +failure. (This code can only occur if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_ENOTFOUND +No query completed successfully; when the query was tried without a +search domain appended, the server reported that the queried-for +domain name was not found. +.TP 19 +.B ARES_ENOTIMP +A query completed but the server does not implement the operation +requested by the query. (This code can only occur if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_EREFUSED +A query completed but the server refused the query. (This code can +only occur returned if the +.B ARES_FLAG_NOCHECKRESP +flag was specified at channel initialization time; otherwise, such +responses are ignored at the +.BR ares_send (3) +level.) +.TP 19 +.B ARES_TIMEOUT +No name servers responded to a query within the timeout period. +.TP 19 +.B ARES_ECONNREFUSED +No name servers could be contacted. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +If a query completed successfully, the callback argument +.I abuf +points to a result buffer of length +.IR alen . +If the query did not complete successfully, +.I abuf +will usually be NULL and +.I alen +will usually be 0, but in some cases an unsuccessful query result may +be placed in +.IR abuf . +.SH SEE ALSO +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_search.c b/ares_search.c new file mode 100644 index 0000000..9a44397 --- /dev/null +++ b/ares_search.c @@ -0,0 +1,323 @@ +/* $Id: ares_search.c,v 1.20 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +struct search_query { + /* Arguments passed to ares_search */ + ares_channel channel; + char *name; /* copied into an allocated buffer */ + int dnsclass; + int type; + ares_callback callback; + void *arg; + + int status_as_is; /* error status from trying as-is */ + int next_domain; /* next search domain to try */ + int trying_as_is; /* current query is for name as-is */ + int timeouts; /* number of timeouts we saw for this request */ + int ever_got_nodata; /* did we ever get ARES_ENODATA along the way? */ +}; + +static void search_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_squery(struct search_query *squery, int status, + unsigned char *abuf, int alen); +static int cat_domain(const char *name, const char *domain, char **s); +static int single_domain(ares_channel channel, const char *name, char **s); + +void ares_search(ares_channel channel, const char *name, int dnsclass, + int type, ares_callback callback, void *arg) +{ + struct search_query *squery; + char *s; + const char *p; + int status, ndots; + + /* If name only yields one domain to search, then we don't have + * to keep extra state, so just do an ares_query(). + */ + status = single_domain(channel, name, &s); + if (status != ARES_SUCCESS) + { + callback(arg, status, 0, NULL, 0); + return; + } + if (s) + { + ares_query(channel, s, dnsclass, type, callback, arg); + free(s); + return; + } + + /* Allocate a search_query structure to hold the state necessary for + * doing multiple lookups. + */ + squery = malloc(sizeof(struct search_query)); + if (!squery) + { + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + squery->channel = channel; + squery->name = strdup(name); + if (!squery->name) + { + free(squery); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + squery->dnsclass = dnsclass; + squery->type = type; + squery->status_as_is = -1; + squery->callback = callback; + squery->arg = arg; + squery->timeouts = 0; + squery->ever_got_nodata = 0; + + /* Count the number of dots in name. */ + ndots = 0; + for (p = name; *p; p++) + { + if (*p == '.') + ndots++; + } + + /* If ndots is at least the channel ndots threshold (usually 1), + * then we try the name as-is first. Otherwise, we try the name + * as-is last. + */ + if (ndots >= channel->ndots) + { + /* Try the name as-is first. */ + squery->next_domain = 0; + squery->trying_as_is = 1; + ares_query(channel, name, dnsclass, type, search_callback, squery); + } + else + { + /* Try the name as-is last; start with the first search domain. */ + squery->next_domain = 1; + squery->trying_as_is = 0; + status = cat_domain(name, channel->domains[0], &s); + if (status == ARES_SUCCESS) + { + ares_query(channel, s, dnsclass, type, search_callback, squery); + free(s); + } + else + { + /* failed, free the malloc()ed memory */ + free(squery->name); + free(squery); + callback(arg, status, 0, NULL, 0); + } + } +} + +static void search_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct search_query *squery = (struct search_query *) arg; + ares_channel channel = squery->channel; + char *s; + + squery->timeouts += timeouts; + + /* Stop searching unless we got a non-fatal error. */ + if (status != ARES_ENODATA && status != ARES_ESERVFAIL + && status != ARES_ENOTFOUND) + end_squery(squery, status, abuf, alen); + else + { + /* Save the status if we were trying as-is. */ + if (squery->trying_as_is) + squery->status_as_is = status; + + /* + * If we ever get ARES_ENODATA along the way, record that; if the search + * should run to the very end and we got at least one ARES_ENODATA, + * then callers like ares_gethostbyname() may want to try a T_A search + * even if the last domain we queried for T_AAAA resource records + * returned ARES_ENOTFOUND. + */ + if (status == ARES_ENODATA) + squery->ever_got_nodata = 1; + + if (squery->next_domain < channel->ndomains) + { + /* Try the next domain. */ + status = cat_domain(squery->name, + channel->domains[squery->next_domain], &s); + if (status != ARES_SUCCESS) + end_squery(squery, status, NULL, 0); + else + { + squery->trying_as_is = 0; + squery->next_domain++; + ares_query(channel, s, squery->dnsclass, squery->type, + search_callback, squery); + free(s); + } + } + else if (squery->status_as_is == -1) + { + /* Try the name as-is at the end. */ + squery->trying_as_is = 1; + ares_query(channel, squery->name, squery->dnsclass, squery->type, + search_callback, squery); + } + else { + if (squery->status_as_is == ARES_ENOTFOUND && squery->ever_got_nodata) { + end_squery(squery, ARES_ENODATA, NULL, 0); + } + else + end_squery(squery, squery->status_as_is, NULL, 0); + } + } +} + +static void end_squery(struct search_query *squery, int status, + unsigned char *abuf, int alen) +{ + squery->callback(squery->arg, status, squery->timeouts, abuf, alen); + free(squery->name); + free(squery); +} + +/* Concatenate two domains. */ +static int cat_domain(const char *name, const char *domain, char **s) +{ + size_t nlen = strlen(name); + size_t dlen = strlen(domain); + + *s = malloc(nlen + 1 + dlen + 1); + if (!*s) + return ARES_ENOMEM; + memcpy(*s, name, nlen); + (*s)[nlen] = '.'; + memcpy(*s + nlen + 1, domain, dlen); + (*s)[nlen + 1 + dlen] = 0; + return ARES_SUCCESS; +} + +/* Determine if this name only yields one query. If it does, set *s to + * the string we should query, in an allocated buffer. If not, set *s + * to NULL. + */ +static int single_domain(ares_channel channel, const char *name, char **s) +{ + size_t len = strlen(name); + const char *hostaliases; + FILE *fp; + char *line = NULL; + int status; + size_t linesize; + const char *p, *q; + int error; + + /* If the name contains a trailing dot, then the single query is the name + * sans the trailing dot. + */ + if (name[len - 1] == '.') + { + *s = strdup(name); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + + if (!(channel->flags & ARES_FLAG_NOALIASES) && !strchr(name, '.')) + { + /* The name might be a host alias. */ + hostaliases = getenv("HOSTALIASES"); + if (hostaliases) + { + fp = fopen(hostaliases, "r"); + if (fp) + { + while ((status = ares__read_line(fp, &line, &linesize)) + == ARES_SUCCESS) + { + if (strncasecmp(line, name, len) != 0 || + !ISSPACE(line[len])) + continue; + p = line + len; + while (ISSPACE(*p)) + p++; + if (*p) + { + q = p + 1; + while (*q && !ISSPACE(*q)) + q++; + *s = malloc(q - p + 1); + if (*s) + { + memcpy(*s, p, q - p); + (*s)[q - p] = 0; + } + free(line); + fclose(fp); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + } + free(line); + fclose(fp); + if (status != ARES_SUCCESS) + return status; + } + else + { + error = errno; + switch(error) + { + case ENOENT: + case ESRCH: + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + hostaliases)); + *s = NULL; + return ARES_EFILE; + } + } + } + } + + if (channel->flags & ARES_FLAG_NOSEARCH || channel->ndomains == 0) + { + /* No domain search to do; just try the name as-is. */ + *s = strdup(name); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + + *s = NULL; + return ARES_SUCCESS; +} diff --git a/ares_send.3 b/ares_send.3 new file mode 100644 index 0000000..8c7e53d --- /dev/null +++ b/ares_send.3 @@ -0,0 +1,121 @@ +.\" $Id: ares_send.3,v 1.3 2007-09-28 14:46:51 sesse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_SEND 3 "25 July 1998" +.SH NAME +ares_send \- Initiate a DNS query +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B typedef void (*ares_callback)(void *\fIarg\fP, int \fIstatus\fP, +.B int \fItimeouts\fP, unsigned char *\fIabuf\fP, int \fIalen\fP) +.PP +.B void ares_send(ares_channel \fIchannel\fP, const unsigned char *\fIqbuf\fP, +.B int \fIqlen\fP, ares_callback \fIcallback\fP, void *\fIarg\fP) +.fi +.SH DESCRIPTION +The +.B ares_send +function initiates a DNS query on the name service channel identified +by +.IR channel . +The parameters +.I qbuf +and +.I qlen +give the DNS query, which should already have been formatted according +to the DNS protocol. When the query is complete or has failed, the +ares library will invoke +.IR callback . +Completion or failure of the query may happen immediately, or may +happen during a later call to +.BR ares_process (3) +or +.BR ares_destroy (3). +.PP +The callback argument +.I arg +is copied from the +.B ares_send +argument +.IR arg . +The callback argument +.I status +indicates whether the query succeeded and, if not, how it failed. It +may have any of the following values: +.TP 19 +.B ARES_SUCCESS +The query completed. +.TP 19 +.B ARES_EBADQUERY +The query buffer was poorly formed (was not long enough for a DNS +header or was too long for TCP transmission). +.TP 19 +.B ARES_ETIMEOUT +No name servers responded within the timeout period. +.TP 19 +.B ARES_ECONNREFUSED +No name servers could be contacted. +.TP 19 +.B ARES_ENOMEM +Memory was exhausted. +.TP 19 +.B ARES_EDESTRUCTION +The name service channel +.I channel +is being destroyed; the query will not be completed. +.PP +The callback argument +.I timeouts +reports how many times a query timed out during the execution of the +given request. +.PP +If the query completed, the callback argument +.I abuf +points to a result buffer of length +.IR alen . +If the query did not complete, +.I abuf +will be NULL and +.I alen +will be 0. +.PP +Unless the flag +.B ARES_FLAG_NOCHECKRESP +was set at channel initialization time, +.B ares_send +will normally ignore responses whose questions do not match the +questions in +.IR qbuf , +as well as responses with reply codes of +.BR SERVFAIL , +.BR NOTIMP , +and +.BR REFUSED . +Unlike other query functions in the ares library, however, +.B ares_send +does not inspect the header of the reply packet to determine the error +status, so a callback status of +.B ARES_SUCCESS +does not reflect as much about the response as for other query +functions. +.SH SEE ALSO +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_send.c b/ares_send.c new file mode 100644 index 0000000..eb35b47 --- /dev/null +++ b/ares_send.c @@ -0,0 +1,135 @@ +/* $Id: ares_send.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen, + ares_callback callback, void *arg) +{ + struct query *query; + int i; + struct timeval now; + + /* Verify that the query is at least long enough to hold the header. */ + if (qlen < HFIXEDSZ || qlen >= (1 << 16)) + { + callback(arg, ARES_EBADQUERY, 0, NULL, 0); + return; + } + + /* Allocate space for query and allocated fields. */ + query = malloc(sizeof(struct query)); + if (!query) + { + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + query->tcpbuf = malloc(qlen + 2); + if (!query->tcpbuf) + { + free(query); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + query->server_info = malloc(channel->nservers * + sizeof(query->server_info[0])); + if (!query->server_info) + { + free(query->tcpbuf); + free(query); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + + /* Compute the query ID. Start with no timeout. */ + query->qid = (unsigned short)DNS_HEADER_QID(qbuf); + query->timeout.tv_sec = 0; + query->timeout.tv_usec = 0; + + /* Form the TCP query buffer by prepending qlen (as two + * network-order bytes) to qbuf. + */ + query->tcpbuf[0] = (unsigned char)((qlen >> 8) & 0xff); + query->tcpbuf[1] = (unsigned char)(qlen & 0xff); + memcpy(query->tcpbuf + 2, qbuf, qlen); + query->tcplen = qlen + 2; + + /* Fill in query arguments. */ + query->qbuf = query->tcpbuf + 2; + query->qlen = qlen; + query->callback = callback; + query->arg = arg; + + /* Initialize query status. */ + query->try = 0; + + /* Choose the server to send the query to. If rotation is enabled, keep track + * of the next server we want to use. */ + query->server = channel->last_server; + if (channel->rotate == 1) + channel->last_server = (channel->last_server + 1) % channel->nservers; + + for (i = 0; i < channel->nservers; i++) + { + query->server_info[i].skip_server = 0; + query->server_info[i].tcp_connection_generation = 0; + } + query->using_tcp = (channel->flags & ARES_FLAG_USEVC) || qlen > PACKETSZ; + query->error_status = ARES_ECONNREFUSED; + query->timeouts = 0; + + /* Initialize our list nodes. */ + ares__init_list_node(&(query->queries_by_qid), query); + ares__init_list_node(&(query->queries_by_timeout), query); + ares__init_list_node(&(query->queries_to_server), query); + ares__init_list_node(&(query->all_queries), query); + + /* Chain the query into the list of all queries. */ + ares__insert_in_list(&(query->all_queries), &(channel->all_queries)); + /* Keep track of queries bucketed by qid, so we can process DNS + * responses quickly. + */ + ares__insert_in_list( + &(query->queries_by_qid), + &(channel->queries_by_qid[query->qid % ARES_QID_TABLE_SIZE])); + + /* Perform the first query action. */ + now = ares__tvnow(); + ares__send_query(channel, query, &now); +} diff --git a/ares_set_socket_callback.3 b/ares_set_socket_callback.3 new file mode 100644 index 0000000..316fe32 --- /dev/null +++ b/ares_set_socket_callback.3 @@ -0,0 +1,29 @@ +.\" $Id: ares_set_socket_callback.3,v 1.2 2009-11-20 14:15:06 yangtse Exp $ +.\" +.TH ARES_SET_SOCKET_CALLBACK 3 "20 Nov 2009" +.SH NAME +ares_set_socket_callback \- Set a socket creation callback +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_set_socket_callback(ares_channel \fIchannel\fP, + ares_sock_create_callback \fIcallback\fP, + void *\fIuserdata\fP) +.PP +.B cc file.c -lcares +.fi +.SH DESCRIPTION +.PP +This function sets a \fIcallback\fP in the given ares channel handle. This +callback function will be invoked after the socket has been created, and +connected to the remote server. The callback must return ARES_SUCCESS if +things are fine, or use the standard ares error codes to signal errors +back. Returned errors will abort the ares operation. +.SH SEE ALSO +.BR ares_init_options (3) +.SH AVAILABILITY +ares_set_socket_callback(3) was added in c-ares 1.6.0 +.SH AUTHOR +Gregor Jasny + diff --git a/ares_setup.h b/ares_setup.h new file mode 100644 index 0000000..5ce9398 --- /dev/null +++ b/ares_setup.h @@ -0,0 +1,198 @@ +#ifndef HEADER_CARES_SETUP_H +#define HEADER_CARES_SETUP_H + +/* $Id: ares_setup.h,v 1.2 2009-11-14 18:51:37 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +#define WIN32 +#endif + +/* + * Include configuration script results or hand-crafted + * configuration file for platforms which lack config tool. + */ + +#ifdef HAVE_CONFIG_H +#include "ares_config.h" +#else + +#ifdef WIN32 +#include "config-win32.h" +#endif + +#endif /* HAVE_CONFIG_H */ + +/* ================================================================ */ +/* Definition of preprocessor macros/symbols which modify compiler */ +/* behaviour or generated code characteristics must be done here, */ +/* as appropriate, before any system header file is included. It is */ +/* also possible to have them defined in the config file included */ +/* before this point. As a result of all this we frown inclusion of */ +/* system header files in our config files, avoid this at any cost. */ +/* ================================================================ */ + +/* + * AIX 4.3 and newer needs _THREAD_SAFE defined to build + * proper reentrant code. Others may also need it. + */ + +#ifdef NEED_THREAD_SAFE +# ifndef _THREAD_SAFE +# define _THREAD_SAFE +# endif +#endif + +/* + * Tru64 needs _REENTRANT set for a few function prototypes and + * things to appear in the system header files. Unixware needs it + * to build proper reentrant code. Others may also need it. + */ + +#ifdef NEED_REENTRANT +# ifndef _REENTRANT +# define _REENTRANT +# endif +#endif + +/* ================================================================ */ +/* If you need to include a system header file for your platform, */ +/* please, do it beyond the point further indicated in this file. */ +/* ================================================================ */ + +/* + * c-ares external interface definitions are also used internally, + * and might also include required system header files to define them. + */ + +#include <ares_build.h> + +/* + * Compile time sanity checks must also be done when building the library. + */ + +#include <ares_rules.h> + +/* ================================================================= */ +/* No system header file shall be included in this file before this */ +/* point. The only allowed ones are those included from ares_build.h */ +/* ================================================================= */ + +/* + * Include header files for windows builds before redefining anything. + * Use this preproessor block only to include or exclude windows.h, + * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs + * to any other further and independent block. Under Cygwin things work + * just as under linux (e.g. <sys/socket.h>) and the winsock headers should + * never be included when __CYGWIN__ is defined. configure script takes + * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H, + * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined. + */ + +#ifdef HAVE_WINDOWS_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# ifdef HAVE_WINSOCK2_H +# include <winsock2.h> +# ifdef HAVE_WS2TCPIP_H +# include <ws2tcpip.h> +# endif +# else +# ifdef HAVE_WINSOCK_H +# include <winsock.h> +# endif +# endif +#endif + +/* + * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else + * define USE_WINSOCK to 1 if we have and use WINSOCK API, else + * undefine USE_WINSOCK. + */ + +#undef USE_WINSOCK + +#ifdef HAVE_WINSOCK2_H +# define USE_WINSOCK 2 +#else +# ifdef HAVE_WINSOCK_H +# define USE_WINSOCK 1 +# endif +#endif + +/* + * Work-arounds for systems without configure support + */ + +#ifndef HAVE_CONFIG_H + +#if !defined(HAVE_SYS_TIME_H) && !defined(_MSC_VER) && !defined(__WATCOMC__) +#define HAVE_SYS_TIME_H +#endif + +#if !defined(HAVE_UNISTD_H) && !defined(_MSC_VER) +#define HAVE_UNISTD_H 1 +#endif + +#if !defined(HAVE_SYS_UIO_H) && !defined(WIN32) && !defined(MSDOS) +#define HAVE_SYS_UIO_H +#endif + +#endif /* HAVE_CONFIG_H */ + +#ifdef __POCC__ +# include <sys/types.h> +# include <unistd.h> +# define ESRCH 3 +#endif + +/* + * Recent autoconf versions define these symbols in ares_config.h. We don't + * want them (since they collide with the libcurl ones when we build + * --enable-debug) so we undef them again here. + */ + +#undef PACKAGE_STRING +#undef PACKAGE_TARNAME +#undef PACKAGE_VERSION +#undef PACKAGE_BUGREPORT +#undef PACKAGE_NAME +#undef VERSION +#undef PACKAGE + +/* IPv6 compatibility */ +#if !defined(HAVE_AF_INET6) +#if defined(HAVE_PF_INET6) +#define AF_INET6 PF_INET6 +#else +#define AF_INET6 AF_MAX+1 +#endif +#endif + +/* + * Include macros and defines that should only be processed once. + */ + +#ifndef __SETUP_ONCE_H +#include "setup_once.h" +#endif + +#endif /* HEADER_CARES_SETUP_H */ diff --git a/ares_strcasecmp.c b/ares_strcasecmp.c new file mode 100644 index 0000000..8329e30 --- /dev/null +++ b/ares_strcasecmp.c @@ -0,0 +1,67 @@ + +/* $Id: ares_strcasecmp.c,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares_strcasecmp.h" + +#ifndef HAVE_STRCASECMP +int ares_strcasecmp(const char *a, const char *b) +{ +#if defined(HAVE_STRCMPI) + return strcmpi(a, b); +#elif defined(HAVE_STRICMP) + return stricmp(a, b); +#else + size_t i; + + for (i = 0; i < (size_t)-1; i++) { + int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; + int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; + if (c1 != c2) + return c1-c2; + if (!c1) + break; + } + return 0; +#endif +} +#endif + +#ifndef HAVE_STRNCASECMP +int ares_strncasecmp(const char *a, const char *b, size_t n) +{ +#if defined(HAVE_STRNCMPI) + return strncmpi(a, b, n); +#elif defined(HAVE_STRNICMP) + return strnicmp(a, b, n); +#else + size_t i; + + for (i = 0; i < n; i++) { + int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; + int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; + if (c1 != c2) + return c1-c2; + if (!c1) + break; + } + return 0; +#endif +} +#endif + diff --git a/ares_strcasecmp.h b/ares_strcasecmp.h new file mode 100644 index 0000000..db170be --- /dev/null +++ b/ares_strcasecmp.h @@ -0,0 +1,31 @@ +#ifndef HEADER_CARES_STRCASECMP_H +#define HEADER_CARES_STRCASECMP_H + +/* $Id: ares_strcasecmp.h,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifndef HAVE_STRCASECMP +extern int ares_strcasecmp(const char *a, const char *b); +#endif + +#ifndef HAVE_STRNCASECMP +extern int ares_strncasecmp(const char *a, const char *b, size_t n); +#endif + +#endif /* HEADER_CARES_STRCASECMP_H */ diff --git a/ares_strdup.c b/ares_strdup.c new file mode 100644 index 0000000..d3f2b22 --- /dev/null +++ b/ares_strdup.c @@ -0,0 +1,43 @@ + +/* $Id: ares_strdup.c,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares_strdup.h" + +#ifndef HAVE_STRDUP +char *ares_strdup(const char *s1) +{ + size_t sz; + char * s2; + + if(s1) { + sz = strlen(s1); + if(sz < (size_t)-1) { + sz++; + if(sz < ((size_t)-1) / sizeof(char)) { + s2 = malloc(sz * sizeof(char)); + if(s2) { + memcpy(s2, s1, sz * sizeof(char)); + return s2; + } + } + } + } + return (char *)NULL; +} +#endif diff --git a/ares_strdup.h b/ares_strdup.h new file mode 100644 index 0000000..f88f8d1 --- /dev/null +++ b/ares_strdup.h @@ -0,0 +1,27 @@ +#ifndef HEADER_CARES_STRDUP_H +#define HEADER_CARES_STRDUP_H + +/* $Id: ares_strdup.h,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifndef HAVE_STRDUP +extern char *ares_strdup(const char *s1); +#endif + +#endif /* HEADER_CARES_STRDUP_H */ diff --git a/ares_strerror.3 b/ares_strerror.3 new file mode 100644 index 0000000..0693544 --- /dev/null +++ b/ares_strerror.3 @@ -0,0 +1,38 @@ +.\" $Id: ares_strerror.3,v 1.5 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_STRERROR 3 "25 July 1998" +.SH NAME +ares_strerror \- Get the description of an ares library error code +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B const char *ares_strerror(int \fIcode\fP) +.fi +.SH DESCRIPTION +The +.B ares_strerror +function gets the description of the ares library error code +.IR code , +returning the result as a NUL-terminated C string. +.SH NOTES +This function is not compatible with ares, it takes a different set of +arguments. +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_strerror.c b/ares_strerror.c new file mode 100644 index 0000000..57fcf8f --- /dev/null +++ b/ares_strerror.c @@ -0,0 +1,57 @@ +/* $Id: ares_strerror.c,v 1.18 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include "ares.h" + +const char *ares_strerror(int code) +{ + /* Return a string literal from a table. */ + const char *errtext[] = { + "Successful completion", + "DNS server returned answer with no data", + "DNS server claims query was misformatted", + "DNS server returned general failure", + "Domain name not found", + "DNS server does not implement requested operation", + "DNS server refused query", + "Misformatted DNS query", + "Misformatted domain name", + "Unsupported address family", + "Misformatted DNS reply", + "Could not contact DNS servers", + "Timeout while contacting DNS servers", + "End of file", + "Error reading file", + "Out of memory", + "Channel is being destroyed", + "Misformatted string", + "Illegal flags specified", + "Given hostname is not numeric", + "Illegal hints flags specified", + "c-ares library initialization not yet performed", + "Error loading iphlpapi.dll", + "Could not find GetNetworkParams function", + "DNS query cancelled" + }; + + if(code >= 0 && code < (int)(sizeof(errtext) / sizeof(*errtext))) + return errtext[code]; + else + return "unknown"; +} diff --git a/ares_timeout.3 b/ares_timeout.3 new file mode 100644 index 0000000..103f809 --- /dev/null +++ b/ares_timeout.3 @@ -0,0 +1,62 @@ +.\" $Id: ares_timeout.3,v 1.4 2009-11-23 00:57:51 yangtse Exp $ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_TIMEOUT 3 "25 July 1998" +.SH NAME +ares_fds \- Get file descriptors to select on for name service +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B struct timeval *ares_timeout(ares_channel \fIchannel\fP, +.B struct timeval *\fImaxtv\fP, struct timeval *\fItv\fP) +.fi +.SH DESCRIPTION +The +.B ares_timeout +function determines the maximum time for which the caller should wait before +invoking \fIares_process(3)\fP to process timeouts. The parameter +.I maxtv +specifies a existing maximum timeout, or +.B NULL +if the caller does not wish to apply a maximum timeout. The parameter +.I tv +must point to a writable buffer of type +.BR "struct timeval" . +It is valid for +.I maxtv +and +.I tv +to have the same value. +.PP +If no queries have timeouts pending sooner than the given maximum +timeout, +.B ares_timeout +returns the value of +.IR maxtv; +otherwise +.B ares_timeout +stores the appropriate timeout value into the buffer pointed to by +.I tv +and returns the value of +.IR tv . +.SH SEE ALSO +.BR ares_fds (3), +.BR ares_process (3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. diff --git a/ares_timeout.c b/ares_timeout.c new file mode 100644 index 0000000..a522de7 --- /dev/null +++ b/ares_timeout.c @@ -0,0 +1,81 @@ +/* $Id: ares_timeout.c,v 1.13 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include <time.h> + +#include "ares.h" +#include "ares_private.h" + +/* WARNING: Beware that this is linear in the number of outstanding + * requests! You are probably far better off just calling ares_process() + * once per second, rather than calling ares_timeout() to figure out + * when to next call ares_process(). + */ +struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv, + struct timeval *tvbuf) +{ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + struct timeval now; + struct timeval nextstop; + long offset, min_offset; + + /* No queries, no timeout (and no fetch of the current time). */ + if (ares__is_list_empty(&(channel->all_queries))) + return maxtv; + + /* Find the minimum timeout for the current set of queries. */ + now = ares__tvnow(); + min_offset = -1; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + query = list_node->data; + if (query->timeout.tv_sec == 0) + continue; + offset = ares__timeoffset(&now, &query->timeout); + if (offset < 0) + offset = 0; + if (min_offset == -1 || offset < min_offset) + min_offset = offset; + } + + if(min_offset != -1) { + nextstop.tv_sec = min_offset/1000; + nextstop.tv_usec = (min_offset%1000)*1000; + } + + /* If we found a minimum timeout and it's sooner than the one specified in + * maxtv (if any), return it. Otherwise go with maxtv. + */ + if (min_offset != -1 && (!maxtv || ares__timedout(maxtv, &nextstop))) + { + *tvbuf = nextstop; + return tvbuf; + } + else + return maxtv; +} diff --git a/ares_version.3 b/ares_version.3 new file mode 100644 index 0000000..3502856 --- /dev/null +++ b/ares_version.3 @@ -0,0 +1,41 @@ +.\" $Id: ares_version.3,v 1.3 2009-05-19 16:05:45 yangtse Exp $ +.\" +.\" Copyright 2004 by Daniel Stenberg +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_VERSION 3 "29 January 2004" +.SH NAME +ares_version \- Get the version number of the library +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B const char *ares_version(int *\fIversion\fP) +.fi +.SH DESCRIPTION +The +.B ares_version +function gets the library version as a string and optionally as an integer +stored in the +.IR version , +argument. If you pass a NULL, no integer is attempted to be returned. + +The integer is built up as 24bit number, with 8 separate bits used for major +number, minor number and patch number. This makes a version string such as +1.2.3 will be returned as the hexadecimal number 0x010203 (decimal 66051). +.SH NOTES +This function is not compatible with ares. +.SH AUTHOR +Daniel Stenberg + diff --git a/ares_version.c b/ares_version.c new file mode 100644 index 0000000..3007150 --- /dev/null +++ b/ares_version.c @@ -0,0 +1,12 @@ +/* $Id: ares_version.c,v 1.5 2009-11-02 11:55:53 yangtse Exp $ */ + +#include "ares_setup.h" +#include "ares.h" + +const char *ares_version(int *version) +{ + if(version) + *version = ARES_VERSION; + + return ARES_VERSION_STR; +} diff --git a/ares_version.h b/ares_version.h new file mode 100644 index 0000000..86f01fd --- /dev/null +++ b/ares_version.h @@ -0,0 +1,22 @@ +/* $Id: ares_version.h,v 1.20 2009-11-30 22:39:04 bagder Exp $ */ + +#ifndef ARES__VERSION_H +#define ARES__VERSION_H + +#define ARES_VERSION_MAJOR 1 +#define ARES_VERSION_MINOR 7 +#define ARES_VERSION_PATCH 1 +#define ARES_VERSION ((ARES_VERSION_MAJOR<<16)|\ + (ARES_VERSION_MINOR<<8)|\ + (ARES_VERSION_PATCH)) +#define ARES_VERSION_STR "1.7.1-CVS" + +#if (ARES_VERSION >= 0x010700) +# define CARES_HAVE_ARES_LIBRARY_INIT 1 +# define CARES_HAVE_ARES_LIBRARY_CLEANUP 1 +#else +# undef CARES_HAVE_ARES_LIBRARY_INIT +# undef CARES_HAVE_ARES_LIBRARY_CLEANUP +#endif + +#endif diff --git a/ares_writev.c b/ares_writev.c new file mode 100644 index 0000000..855ce14 --- /dev/null +++ b/ares_writev.c @@ -0,0 +1,80 @@ + +/* $Id: ares_writev.c,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +#ifndef HAVE_WRITEV +ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt) +{ + char *buffer, *bp; + int i; + size_t bytes = 0; + ssize_t result; + + /* Validate iovcnt */ + if (iovcnt <= 0) + { + SET_ERRNO(EINVAL); + return (-1); + } + + /* Validate and find the sum of the iov_len values in the iov array */ + for (i = 0; i < iovcnt; i++) + { + if (iov[i].iov_len > INT_MAX - bytes) + { + SET_ERRNO(EINVAL); + return (-1); + } + bytes += iov[i].iov_len; + } + + if (bytes == 0) + return (0); + + /* Allocate a temporary buffer to hold the data */ + buffer = malloc(bytes); + if (!buffer) + { + SET_ERRNO(ENOMEM); + return (-1); + } + + /* Copy the data into buffer */ + for (bp = buffer, i = 0; i < iovcnt; ++i) + { + memcpy (bp, iov[i].iov_base, iov[i].iov_len); + bp += iov[i].iov_len; + } + + /* Send buffer contents */ + result = swrite(s, buffer, bytes); + + free(buffer); + + return (result); +} +#endif + diff --git a/ares_writev.h b/ares_writev.h new file mode 100644 index 0000000..631baf8 --- /dev/null +++ b/ares_writev.h @@ -0,0 +1,37 @@ +#ifndef HEADER_CARES_WRITEV_H +#define HEADER_CARES_WRITEV_H + +/* $Id: ares_writev.h,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares.h" + +#ifndef HAVE_WRITEV + +/* Structure for scatter/gather I/O. */ +struct iovec +{ + void *iov_base; /* Pointer to data. */ + size_t iov_len; /* Length of data. */ +}; + +extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt); + +#endif + +#endif /* HEADER_CARES_WRITEV_H */ diff --git a/bitncmp.c b/bitncmp.c new file mode 100644 index 0000000..f36ffaa --- /dev/null +++ b/bitncmp.c @@ -0,0 +1,60 @@ +/* $Id: bitncmp.c,v 1.8 2009-11-02 11:55:54 yangtse Exp $ */ + +/* + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1996,1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HAVE_BITNCMP + +#include "ares_setup.h" +#include "bitncmp.h" + +/* + * int + * bitncmp(l, r, n) + * compare bit masks l and r, for n bits. + * return: + * -1, 1, or 0 in the libc tradition. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +ares_bitncmp(const void *l, const void *r, int n) { + unsigned int lb, rb; + int x, b; + + b = n / 8; + x = memcmp(l, r, b); + if (x || (n % 8) == 0) + return (x); + + lb = ((const unsigned char *)l)[b]; + rb = ((const unsigned char *)r)[b]; + for (b = n % 8; b > 0; b--) { + if ((lb & 0x80) != (rb & 0x80)) { + if (lb & 0x80) + return (1); + return (-1); + } + lb <<= 1; + rb <<= 1; + } + return (0); +} +#endif diff --git a/bitncmp.h b/bitncmp.h new file mode 100644 index 0000000..4805683 --- /dev/null +++ b/bitncmp.h @@ -0,0 +1,27 @@ +#ifndef __ARES_BITNCMP_H +#define __ARES_BITNCMP_H + +/* $Id: bitncmp.h,v 1.3 2007-11-19 15:47:01 bagder Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef HAVE_BITNCMP +int ares_bitncmp(const void *l, const void *r, int n); +#else +#define ares_bitncmp(x,y,z) bitncmp(x,y,z) +#endif + +#endif /* __ARES_BITNCMP_H */ diff --git a/buildconf b/buildconf new file mode 100755 index 0000000..f2e9ea5 --- /dev/null +++ b/buildconf @@ -0,0 +1,117 @@ +#!/bin/sh + +#-------------------------------------------------------------------------- +# findtool works as 'which' but we use a different name to make it more +# obvious we aren't using 'which'! ;-) +# +findtool(){ + file="$1" + + old_IFS=$IFS; IFS=':' + for path in $PATH + do + IFS=$old_IFS + # echo "checks for $file in $path" >&2 + if test -f "$path/$file"; then + echo "$path/$file" + return + fi + done + IFS=$old_IFS +} + +#-------------------------------------------------------------------------- +# removethis() removes all files and subdirectories with the given name, +# inside and below the current subdirectory at invocation time. +# +removethis(){ + if test "$#" = "1"; then + find . -depth -name $1 -print > buildconf.tmp.$$ + while read fdname + do + if test -f "$fdname"; then + rm -f "$fdname" + elif test -d "$fdname"; then + rm -f -r "$fdname" + fi + done < buildconf.tmp.$$ + rm -f buildconf.tmp.$$ + fi +} + +#-------------------------------------------------------------------------- +# Ensure that buildconf runs from the subdirectory where configure.ac lives +# +if test ! -f configure.ac || + test ! -f ares_init.c || + test ! -f m4/cares-functions.m4; then + echo "Can not run buildconf from outside of c-ares source subdirectory!" + echo "Change to the subdirectory where buildconf is found, and try again." + exit 1 +fi + +#-------------------------------------------------------------------------- +# this approach that tries 'glibtool' first is some kind of work-around for +# some BSD-systems I believe that use to provide the GNU libtool named +# glibtool, with 'libtool' being something completely different. +libtool=`findtool glibtool 2>/dev/null` +if test ! -x "$libtool"; then + libtool=`findtool ${LIBTOOL:-libtool}` +fi + +if test -z "$LIBTOOLIZE"; then + # set the LIBTOOLIZE here so that glibtoolize is used if glibtool was found + # $libtool is already the full path + libtoolize="${libtool}ize" +else + libtoolize=`findtool $LIBTOOLIZE` +fi + +#-------------------------------------------------------------------------- +# Remove files generated on previous buildconf/configure run. +# +for fname in .deps \ + .libs \ + *.la \ + *.lo \ + *.a \ + *.o \ + Makefile \ + Makefile.in \ + aclocal.m4 \ + aclocal.m4.bak \ + ares_build.h \ + ares_config.h \ + ares_config.h.in \ + autom4te.cache \ + compile \ + config.guess \ + config.log \ + config.lt \ + config.status \ + config.sub \ + configure \ + depcomp \ + libcares.pc \ + libtool \ + libtool.m4 \ + ltmain.sh \ + ltoptions.m4 \ + ltsugar.m4 \ + ltversion.m4 \ + lt~obsolete.m4 \ + missing \ + stamp-h1 \ + stamp-h2 ; do + removethis "$fname" +done + +#-------------------------------------------------------------------------- +# run the correct scripts now +# + +${libtoolize} --copy --automake --force +${ACLOCAL:-aclocal} -I m4 $ACLOCAL_FLAGS +${AUTOHEADER:-autoheader} +${AUTOCONF:-autoconf} +${AUTOMAKE:-automake} --add-missing --copy diff --git a/buildconf.bat b/buildconf.bat new file mode 100644 index 0000000..36d810e --- /dev/null +++ b/buildconf.bat @@ -0,0 +1,21 @@ +@echo off +REM +REM $Id: buildconf.bat,v 1.3 2009-06-08 14:27:36 yangtse Exp $ +REM +REM This batch file must be used to set up a CVS tree to build on +REM systems where there is no autotools support (i.e. Microsoft). +REM +REM This file is not included nor needed for c-ares' release +REM archives, neither for c-ares' daily snapshot archives. + +if exist CVS-INFO goto start_doing +ECHO ERROR: This file shall only be used with a c-ares CVS tree checkout. +goto end_all +:start_doing + +if not exist ares_build.h.dist goto end_ares_build_h +copy /Y ares_build.h.dist ares_build.h +:end_ares_build_h + +:end_all + diff --git a/cares.rc b/cares.rc new file mode 100644 index 0000000..014152e --- /dev/null +++ b/cares.rc @@ -0,0 +1,66 @@ +/* $Id: cares.rc,v 1.3 2009-11-10 22:04:51 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include <winver.h> +#include "ares_version.h" + +LANGUAGE 0x09,0x01 + +#define RC_VERSION ARES_VERSION_MAJOR, ARES_VERSION_MINOR, ARES_VERSION_PATCH, 0 + +VS_VERSION_INFO VERSIONINFO + FILEVERSION RC_VERSION + PRODUCTVERSION RC_VERSION + FILEFLAGSMASK 0x3fL +#if defined(DEBUGBUILD) || defined(_DEBUG) + FILEFLAGS 1 +#else + FILEFLAGS 0 +#endif + FILEOS VOS__WINDOWS32 + FILETYPE VFT_DLL + FILESUBTYPE 0x0L + +BEGIN + BLOCK "StringFileInfo" + BEGIN + BLOCK "040904b0" + BEGIN + VALUE "CompanyName", "The c-ares library, http://c-ares.haxx.se/\0" +#if defined(DEBUGBUILD) || defined(_DEBUG) + VALUE "FileDescription", "c-ares Debug Shared Library\0" + VALUE "FileVersion", ARES_VERSION_STR "\0" + VALUE "InternalName", "c-ares\0" + VALUE "OriginalFilename", "caresd.dll\0" +#else + VALUE "FileDescription", "c-ares Shared Library\0" + VALUE "FileVersion", ARES_VERSION_STR "\0" + VALUE "InternalName", "c-ares\0" + VALUE "OriginalFilename", "cares.dll\0" +#endif + VALUE "ProductName", "The c-ares library\0" + VALUE "ProductVersion", ARES_VERSION_STR "\0" + VALUE "LegalCopyright", "© 2004 - 2009 Daniel Stenberg, <daniel@haxx.se>.\0" + VALUE "License", "http://c-ares.haxx.se/license.html\0" + END + END + + BLOCK "VarFileInfo" + BEGIN + VALUE "Translation", 0x409, 1200 + END +END diff --git a/config-win32.h b/config-win32.h new file mode 100644 index 0000000..cf9b9ea --- /dev/null +++ b/config-win32.h @@ -0,0 +1,344 @@ +#ifndef __ARES_CONFIG_WIN32_H +#define __ARES_CONFIG_WIN32_H + +/* $Id: config-win32.h,v 1.33 2009-12-21 16:55:39 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2008 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* ares/config-win32.h - Hand crafted config file for Windows */ +/* ================================================================ */ + +/* ---------------------------------------------------------------- */ +/* HEADER FILES */ +/* ---------------------------------------------------------------- */ + +/* Define if you have the <getopt.h> header file. */ +#if defined(__MINGW32__) || defined(__POCC__) +#define HAVE_GETOPT_H 1 +#endif + +/* Define if you have the <limits.h> header file. */ +#define HAVE_LIMITS_H 1 + +/* Define if you have the <process.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_PROCESS_H 1 +#endif + +/* Define if you have the <signal.h> header file. */ +#define HAVE_SIGNAL_H 1 + +/* Define if you have the <sys/time.h> header file */ +/* #define HAVE_SYS_TIME_H 1 */ + +/* Define if you have the <time.h> header file. */ +#define HAVE_TIME_H 1 + +/* Define if you have the <unistd.h> header file. */ +#if defined(__MINGW32__) || defined(__WATCOMC__) || defined(__LCC__) || \ + defined(__POCC__) +#define HAVE_UNISTD_H 1 +#endif + +/* Define if you have the <windows.h> header file. */ +#define HAVE_WINDOWS_H 1 + +/* Define if you have the <winsock.h> header file. */ +#define HAVE_WINSOCK_H 1 + +/* Define if you have the <winsock2.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_WINSOCK2_H 1 +#endif + +/* Define if you have the <ws2tcpip.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_WS2TCPIP_H 1 +#endif + +/* ---------------------------------------------------------------- */ +/* OTHER HEADER INFO */ +/* ---------------------------------------------------------------- */ + +/* Define if sig_atomic_t is an available typedef. */ +#define HAVE_SIG_ATOMIC_T 1 + +/* Define if you have the ANSI C header files. */ +#define STDC_HEADERS 1 + +/* Define if you can safely include both <sys/time.h> and <time.h>. */ +/* #define TIME_WITH_SYS_TIME 1 */ + +/* ---------------------------------------------------------------- */ +/* FUNCTIONS */ +/* ---------------------------------------------------------------- */ + +/* Define if you have the closesocket function. */ +#define HAVE_CLOSESOCKET 1 + +/* Define if you have the gethostname function. */ +#define HAVE_GETHOSTNAME 1 + +/* Define if you have the ioctlsocket function. */ +#define HAVE_IOCTLSOCKET 1 + +/* Define if you have a working ioctlsocket FIONBIO function. */ +#define HAVE_IOCTLSOCKET_FIONBIO 1 + +/* Define if you have the strcasecmp function. */ +/* #define HAVE_STRCASECMP 1 */ + +/* Define if you have the strdup function. */ +#define HAVE_STRDUP 1 + +/* Define if you have the stricmp function. */ +#define HAVE_STRICMP 1 + +/* Define if you have the strncasecmp function. */ +/* #define HAVE_STRNCASECMP 1 */ + +/* Define if you have the strnicmp function. */ +#define HAVE_STRNICMP 1 + +/* Define if you have the recv function. */ +#define HAVE_RECV 1 + +/* Define to the type of arg 1 for recv. */ +#define RECV_TYPE_ARG1 SOCKET + +/* Define to the type of arg 2 for recv. */ +#define RECV_TYPE_ARG2 char * + +/* Define to the type of arg 3 for recv. */ +#define RECV_TYPE_ARG3 int + +/* Define to the type of arg 4 for recv. */ +#define RECV_TYPE_ARG4 int + +/* Define to the function return type for recv. */ +#define RECV_TYPE_RETV int + +/* Define if you have the recvfrom function. */ +#define HAVE_RECVFROM 1 + +/* Define to the type of arg 1 for recvfrom. */ +#define RECVFROM_TYPE_ARG1 SOCKET + +/* Define to the type pointed by arg 2 for recvfrom. */ +#define RECVFROM_TYPE_ARG2 char + +/* Define to the type of arg 3 for recvfrom. */ +#define RECVFROM_TYPE_ARG3 int + +/* Define to the type of arg 4 for recvfrom. */ +#define RECVFROM_TYPE_ARG4 int + +/* Define to the type pointed by arg 5 for recvfrom. */ +#define RECVFROM_TYPE_ARG5 struct sockaddr + +/* Define to the type pointed by arg 6 for recvfrom. */ +#define RECVFROM_TYPE_ARG6 int + +/* Define to the function return type for recvfrom. */ +#define RECVFROM_TYPE_RETV int + +/* Define if you have the send function. */ +#define HAVE_SEND 1 + +/* Define to the type of arg 1 for send. */ +#define SEND_TYPE_ARG1 SOCKET + +/* Define to the type qualifier of arg 2 for send. */ +#define SEND_QUAL_ARG2 const + +/* Define to the type of arg 2 for send. */ +#define SEND_TYPE_ARG2 char * + +/* Define to the type of arg 3 for send. */ +#define SEND_TYPE_ARG3 int + +/* Define to the type of arg 4 for send. */ +#define SEND_TYPE_ARG4 int + +/* Define to the function return type for send. */ +#define SEND_TYPE_RETV int + +/* Specifics for the Watt-32 tcp/ip stack */ +#ifdef WATT32 + #define SOCKET int + #define NS_INADDRSZ 4 + #define HAVE_ARPA_NAMESER_H 1 + #define HAVE_ARPA_INET_H 1 + #define HAVE_NETDB_H 1 + #define HAVE_NETINET_IN_H 1 + #define HAVE_SYS_SOCKET_H 1 + #define HAVE_NETINET_TCP_H 1 + #define HAVE_AF_INET6 1 + #define HAVE_PF_INET6 1 + #define HAVE_STRUCT_IN6_ADDR 1 + #define HAVE_STRUCT_SOCKADDR_IN6 1 + #undef HAVE_WINSOCK_H + #undef HAVE_WINSOCK2_H + #undef HAVE_WS2TCPIP_H +#endif + +/* ---------------------------------------------------------------- */ +/* TYPEDEF REPLACEMENTS */ +/* ---------------------------------------------------------------- */ + +/* Define this if in_addr_t is not an available 'typedefed' type */ +#define in_addr_t unsigned long + +/* Define as the return type of signal handlers (int or void). */ +#define RETSIGTYPE void + +/* Define ssize_t if it is not an available 'typedefed' type */ +#ifndef _SSIZE_T_DEFINED +# if (defined(__WATCOMC__) && (__WATCOMC__ >= 1240)) || \ + defined(__POCC__) || \ + defined(__MINGW32__) +# elif defined(_WIN64) +# define _SSIZE_T_DEFINED +# define ssize_t __int64 +# else +# define _SSIZE_T_DEFINED +# define ssize_t int +# endif +#endif + +/* ---------------------------------------------------------------- */ +/* STRUCT RELATED */ +/* ---------------------------------------------------------------- */ + +/* Define this if you have struct addrinfo */ +#define HAVE_STRUCT_ADDRINFO 1 + +/* Define this if you have struct sockaddr_storage */ +#ifndef __SALFORDC__ +#define HAVE_STRUCT_SOCKADDR_STORAGE 1 +#endif + +/* Define this if you have struct timeval */ +#define HAVE_STRUCT_TIMEVAL 1 + +/* ---------------------------------------------------------------- */ +/* COMPILER SPECIFIC */ +/* ---------------------------------------------------------------- */ + +/* Define to avoid VS2005 complaining about portable C functions */ +#if defined(_MSC_VER) && (_MSC_VER >= 1400) +#define _CRT_SECURE_NO_DEPRECATE 1 +#define _CRT_NONSTDC_NO_DEPRECATE 1 +#endif + +/* Officially, Microsoft's Windows SDK versions 6.X do not support Windows + 2000 as a supported build target. VS2008 default installations provide an + embedded Windows SDK v6.0A along with the claim that Windows 2000 is a + valid build target for VS2008. Popular belief is that binaries built using + Windows SDK versions 6.X and Windows 2000 as a build target are functional */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# define VS2008_MINIMUM_TARGET 0x0500 +#endif + +/* When no build target is specified VS2008 default build target is Windows + Vista, which leaves out even Winsows XP. If no build target has been given + for VS2008 we will target the minimum Officially supported build target, + which happens to be Windows XP. */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# define VS2008_DEFAULT_TARGET 0x0501 +#endif + +/* VS2008 default target settings and minimum build target check */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# ifndef _WIN32_WINNT +# define _WIN32_WINNT VS2008_DEFAULT_TARGET +# endif +# ifndef WINVER +# define WINVER VS2008_DEFAULT_TARGET +# endif +# if (_WIN32_WINNT < VS2008_MINIMUM_TARGET) || (WINVER < VS2008_MINIMUM_TARGET) +# error VS2008 does not support Windows build targets prior to Windows 2000 +# endif +#endif + +/* When no build target is specified Pelles C 5.00 and later default build + target is Windows Vista. We override default target to be Windows 2000. */ +#if defined(__POCC__) && (__POCC__ >= 500) +# ifndef _WIN32_WINNT +# define _WIN32_WINNT 0x0500 +# endif +# ifndef WINVER +# define WINVER 0x0500 +# endif +#endif + +/* Availability of freeaddrinfo, getaddrinfo and getnameinfo functions is + quite convoluted, compiler dependent and even build target dependent. */ +#if defined(HAVE_WS2TCPIP_H) +# if defined(__POCC__) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# elif defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# elif defined(_MSC_VER) && (_MSC_VER >= 1200) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# endif +#endif + +#if defined(__POCC__) +# ifndef _MSC_VER +# error Microsoft extensions /Ze compiler option is required +# endif +# ifndef __POCC__OLDNAMES +# error Compatibility names /Go compiler option is required +# endif +#endif + +/* ---------------------------------------------------------------- */ +/* IPV6 COMPATIBILITY */ +/* ---------------------------------------------------------------- */ + +/* Define this if you have address family AF_INET6 */ +#ifdef HAVE_WINSOCK2_H +#define HAVE_AF_INET6 1 +#endif + +/* Define this if you have protocol family PF_INET6 */ +#ifdef HAVE_WINSOCK2_H +#define HAVE_PF_INET6 1 +#endif + +/* Define this if you have struct in6_addr */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_STRUCT_IN6_ADDR 1 +#endif + +/* Define this if you have struct sockaddr_in6 */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_STRUCT_SOCKADDR_IN6 1 +#endif + +/* Define this if you have sockaddr_in6 with scopeid */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 +#endif + + +#endif /* __ARES_CONFIG_WIN32_H */ diff --git a/config.dos b/config.dos new file mode 100644 index 0000000..244806d --- /dev/null +++ b/config.dos @@ -0,0 +1,112 @@ +#ifndef HEADER_CONFIG_DOS_H +#define HEADER_CONFIG_DOS_H + +/* $Id: config.dos,v 1.3 2009-06-20 13:08:53 giva Exp $ */ + +/* ================================================================ */ +/* ares/config.dos - Hand crafted config file for DOS */ +/* ================================================================ */ + +#define PACKAGE "c-ares" + +#define HAVE_GETTIMEOFDAY 1 +#define HAVE_IOCTLSOCKET 1 +#define HAVE_IOCTLSOCKET_FIONBIO 1 +#define HAVE_LIMITS_H 1 +#define HAVE_NET_IF_H 1 +#define HAVE_RECV 1 +#define HAVE_RECVFROM 1 +#define HAVE_SEND 1 +#define HAVE_STRDUP 1 +#define HAVE_STRICMP 1 +#define HAVE_STRUCT_IN6_ADDR 1 +#define HAVE_STRUCT_TIMEVAL 1 +#define HAVE_SYS_IOCTL_H 1 +#define HAVE_SYS_SOCKET_H 1 +#define HAVE_SYS_STAT_H 1 +#define HAVE_SYS_TYPES_H 1 +#define HAVE_TIME_H 1 +#define HAVE_UNISTD_H 1 + +#define NEED_MALLOC_H 1 + +#define RETSIGTYPE void +#define TIME_WITH_SYS_TIME 1 + +/* Qualifiers for send(), recv(), recvfrom() and getnameinfo(). */ + +#define SEND_TYPE_ARG1 int +#define SEND_QUAL_ARG2 const +#define SEND_TYPE_ARG2 void * +#define SEND_TYPE_ARG3 int +#define SEND_TYPE_ARG4 int +#define SEND_TYPE_RETV int + +#define RECV_TYPE_ARG1 int +#define RECV_TYPE_ARG2 void * +#define RECV_TYPE_ARG3 int +#define RECV_TYPE_ARG4 int +#define RECV_TYPE_RETV int + +#define RECVFROM_TYPE_ARG1 int +#define RECVFROM_TYPE_ARG2 void +#define RECVFROM_TYPE_ARG3 int +#define RECVFROM_TYPE_ARG4 int +#define RECVFROM_TYPE_ARG5 struct sockaddr +#define RECVFROM_TYPE_ARG6 int +#define RECVFROM_TYPE_RETV int +#define RECVFROM_TYPE_ARG2_IS_VOID 1 + +#define BSD + +#if defined(__HIGHC__) || \ + (defined(__GNUC__) && (__GNUC__ < 4)) +#define ssize_t int +#endif + +/* Target HAVE_x section */ + +#if defined(DJGPP) + #define HAVE_STRCASECMP 1 + #define HAVE_STRNCASECMP 1 + #define HAVE_SYS_TIME_H 1 + #define HAVE_VARIADIC_MACROS_GCC 1 + + /* Because djgpp <= 2.03 doesn't have snprintf() etc. */ + #if (DJGPP_MINOR < 4) + #define _MPRINTF_REPLACE + #endif + +#elif defined(__WATCOMC__) + #define HAVE_STRCASECMP 1 + +#elif defined(__HIGHC__) + #define HAVE_SYS_TIME_H 1 +#endif + +#ifdef WATT32 + #define HAVE_AF_INET6 1 + #define HAVE_ARPA_INET_H 1 + #define HAVE_ARPA_NAMESER_H 1 + #define HAVE_CLOSESOCKET_CAMEL 1 + #define HAVE_GETHOSTNAME 1 + #define HAVE_NETDB_H 1 + #define HAVE_NETINET_IN_H 1 + #define HAVE_NETINET_TCP_H 1 + #define HAVE_PF_INET6 1 + #define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 + #define HAVE_STRUCT_ADDRINFO 1 + #define HAVE_STRUCT_IN6_ADDR 1 + #define HAVE_STRUCT_SOCKADDR_IN6 1 + #define HAVE_SYS_SOCKET_H 1 + #define HAVE_SYS_UIO_H 1 + #define NS_INADDRSZ 4 + #define HAVE_STRUCT_SOCKADDR_IN6 1 + #define CloseSocket(s) close_s((s)) +#endif + +#undef word +#undef byte + +#endif /* HEADER_CONFIG_DOS_H */ + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..667141d --- /dev/null +++ b/configure.ac @@ -0,0 +1,876 @@ +AC_PREREQ(2.57) + +dnl Version not hardcoded here. Fetched later from ares_version.h +AC_INIT([c-ares], [-], + [c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares]) + +CARES_OVERRIDE_AUTOCONF + +AC_CONFIG_SRCDIR([ares_ipv6.h]) +AM_CONFIG_HEADER([ares_config.h ares_build.h]) +AM_MAINTAINER_MODE + +CARES_CHECK_OPTION_DEBUG +CARES_CHECK_OPTION_OPTIMIZE +CARES_CHECK_OPTION_WARNINGS +CARES_CHECK_OPTION_CURLDEBUG +CARES_CHECK_OPTION_SYMBOL_HIDING + +CARES_CHECK_PATH_SEPARATOR_REQUIRED + +dnl SED is mandatory for configure process and libtool. +dnl Set it now, allowing it to be changed later. +AC_PATH_PROG([SED], [sed], [not_found], + [$PATH:/usr/bin:/usr/local/bin]) +if test -z "$SED" || test "$SED" = "not_found"; then + AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.]) +fi +AC_SUBST([SED]) + +dnl GREP is mandatory for configure process and libtool. +dnl Set it now, allowing it to be changed later. +AC_PATH_PROG([GREP], [grep], [not_found], + [$PATH:/usr/bin:/usr/local/bin]) +if test -z "$GREP" || test "$GREP" = "not_found"; then + AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.]) +fi +AC_SUBST([GREP]) + +dnl EGREP is mandatory for configure process and libtool. +dnl Set it now, allowing it to be changed later. +if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then + AC_MSG_CHECKING([for egrep]) + EGREP="$GREP -E" + AC_MSG_RESULT([$EGREP]) +else + AC_PATH_PROG([EGREP], [egrep], [not_found], + [$PATH:/usr/bin:/usr/local/bin]) +fi +if test -z "$EGREP" || test "$EGREP" = "not_found"; then + AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.]) +fi +AC_SUBST([EGREP]) + +dnl AR is mandatory for configure process and libtool. +dnl This is target dependent, so check it as a tool. +AC_PATH_TOOL([AR], [ar], [not_found], + [$PATH:/usr/bin:/usr/local/bin]) +if test -z "$AR" || test "$AR" = "not_found"; then + AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.]) +fi +AC_SUBST([AR]) + +dnl Remove non-configure distributed ares_build.h +if test -f ${srcdir}/ares_build.h; then + rm -f ${srcdir}/ares_build.h +fi + +dnl Fetch c-ares version from ares_version.h +VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h` +AM_INIT_AUTOMAKE([c-ares], [$VERSION]) +AC_MSG_CHECKING([c-ares version]) +AC_MSG_RESULT([$VERSION]) + +dnl +dnl Detect the canonical host and target build environment +dnl + +AC_CANONICAL_HOST +dnl Get system canonical name +AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS]) + +CARES_CHECK_PROG_CC +AM_PROG_CC_C_O +AC_PROG_INSTALL + +dnl This defines _ALL_SOURCE for AIX +CARES_CHECK_AIX_ALL_SOURCE + +dnl Our configure and build reentrant settings +CARES_CONFIGURE_THREAD_SAFE +CARES_CONFIGURE_REENTRANT + +dnl check for how to do large files +AC_SYS_LARGEFILE + +case $host_os in + solaris*) + AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used]) + ;; +esac + +dnl support building of Windows DLLs +AC_LIBTOOL_WIN32_DLL + +dnl force libtool to build static libraries with PIC on AMD64-Linux & FreeBSD +AC_MSG_CHECKING([if arch-OS host is AMD64-Linux/FreeBSD (to build static libraries with PIC)]) +case $host in + x86_64*linux*|amd64*freebsd*|ia64*freebsd*) + AC_MSG_RESULT([yes]) + with_pic=yes + ;; + *) + AC_MSG_RESULT([no]) + ;; +esac + +AC_MSG_CHECKING([if compiler is icc (to build with PIC)]) +case $CC in + icc | */icc) + AC_MSG_RESULT([yes]) + with_pic=yes + ;; + *) + AC_MSG_RESULT([no]) + ;; +esac + +dnl libtool setup +AC_PROG_LIBTOOL + +AC_MSG_CHECKING([if we need CARES_BUILDING_LIBRARY]) +case $host in + *-*-mingw*) + AC_DEFINE(CARES_BUILDING_LIBRARY, 1, [when building c-ares library]) + AC_MSG_RESULT(yes) + AC_MSG_CHECKING([if we need CARES_STATICLIB]) + if test "X$enable_shared" = "Xno" + then + AC_DEFINE(CARES_STATICLIB, 1, [when not building a shared library]) + AC_MSG_RESULT(yes) + else + AC_MSG_RESULT(no) + fi + ;; + *) + AC_MSG_RESULT(no) + ;; +esac + +dnl ********************************************************************** +dnl platform/compiler/architecture specific checks/flags +dnl ********************************************************************** + +CARES_CHECK_COMPILER +CARES_SET_COMPILER_BASIC_OPTS +CARES_SET_COMPILER_DEBUG_OPTS +CARES_SET_COMPILER_OPTIMIZE_OPTS +CARES_SET_COMPILER_WARNING_OPTS + +if test "$compiler_id" = "INTEL_UNIX_C"; then + # + if test "$compiler_num" -ge "1000"; then + dnl icc 10.X or later + CFLAGS="$CFLAGS -shared-intel" + elif test "$compiler_num" -ge "900"; then + dnl icc 9.X specific + CFLAGS="$CFLAGS -i-dynamic" + fi + # +fi + +CARES_CHECK_COMPILER_HALT_ON_ERROR +CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE +CARES_CHECK_COMPILER_SYMBOL_HIDING + +CARES_CHECK_NO_UNDEFINED +AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes) + +CARES_CHECK_CURLDEBUG +AM_CONDITIONAL(CURLDEBUG, test x$want_curldebug = xyes) + +dnl ********************************************************************** +dnl Compilation based checks should not be done before this point. +dnl ********************************************************************** + +dnl ********************************************************************** +dnl Make sure that our checks for headers windows.h winsock.h winsock2.h +dnl and ws2tcpip.h take precedence over any other further checks which +dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for +dnl this specific header files. And do them before its results are used. +dnl ********************************************************************** + +CURL_CHECK_HEADER_WINDOWS +CURL_CHECK_NATIVE_WINDOWS +case X-"$ac_cv_native_windows" in + X-yes) + CURL_CHECK_HEADER_WINSOCK + CURL_CHECK_HEADER_WINSOCK2 + CURL_CHECK_HEADER_WS2TCPIP + ;; + *) + ac_cv_header_winsock_h="no" + ac_cv_header_winsock2_h="no" + ac_cv_header_ws2tcpip_h="no" + ;; +esac + +dnl ********************************************************************** +dnl Checks for libraries. +dnl ********************************************************************** + +CARES_CHECK_LIB_XNET + +dnl gethostbyname without lib or in the nsl lib? +AC_CHECK_FUNC(gethostbyname, + [HAVE_GETHOSTBYNAME="1" + ], + [ AC_CHECK_LIB(nsl, gethostbyname, + [HAVE_GETHOSTBYNAME="1" + LIBS="$LIBS -lnsl" + ]) + ]) + +if test "$HAVE_GETHOSTBYNAME" != "1" +then + dnl gethostbyname in the socket lib? + AC_CHECK_LIB(socket, gethostbyname, + [HAVE_GETHOSTBYNAME="1" + LIBS="$LIBS -lsocket" + ]) +fi + +dnl At least one system has been identified to require BOTH nsl and socket +dnl libs at the same time to link properly. +if test "$HAVE_GETHOSTBYNAME" != "1" +then + AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs]) + my_ac_save_LIBS=$LIBS + LIBS="-lnsl -lsocket $LIBS" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + gethostbyname(); + ]]) + ],[ + AC_MSG_RESULT([yes]) + HAVE_GETHOSTBYNAME="1" + ],[ + AC_MSG_RESULT([no]) + LIBS=$my_ac_save_LIBS + ]) +fi + +if test "$HAVE_GETHOSTBYNAME" != "1" +then + dnl This is for winsock systems + if test "$ac_cv_header_windows_h" = "yes"; then + if test "$ac_cv_header_winsock_h" = "yes"; then + case $host in + *-*-mingw32ce*) + winsock_LIB="-lwinsock" + ;; + *) + winsock_LIB="-lwsock32" + ;; + esac + fi + if test "$ac_cv_header_winsock2_h" = "yes"; then + winsock_LIB="-lws2_32" + fi + if test ! -z "$winsock_LIB"; then + my_ac_save_LIBS=$LIBS + LIBS="$winsock_LIB $LIBS" + AC_MSG_CHECKING([for gethostbyname in $winsock_LIB]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#else +#ifdef HAVE_WINSOCK_H +#include <winsock.h> +#endif +#endif +#endif + ]],[[ + gethostbyname("www.dummysite.com"); + ]]) + ],[ + AC_MSG_RESULT([yes]) + HAVE_GETHOSTBYNAME="1" + ],[ + AC_MSG_RESULT([no]) + winsock_LIB="" + LIBS=$my_ac_save_LIBS + ]) + fi + fi +fi + +if test "$HAVE_GETHOSTBYNAME" != "1" +then + dnl This is for Minix 3.1 + AC_MSG_CHECKING([for gethostbyname for Minix 3]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +/* Older Minix versions may need <net/gen/netdb.h> here instead */ +#include <netdb.h> + ]],[[ + gethostbyname("www.dummysite.com"); + ]]) + ],[ + AC_MSG_RESULT([yes]) + HAVE_GETHOSTBYNAME="1" + ],[ + AC_MSG_RESULT([no]) + ]) +fi + +if test "$HAVE_GETHOSTBYNAME" != "1" +then + dnl This is for eCos with a stubbed DNS implementation + AC_MSG_CHECKING([for gethostbyname for eCos]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +#include <stdio.h> +#include <netdb.h> + ]],[[ + gethostbyname("www.dummysite.com"); + ]]) + ],[ + AC_MSG_RESULT([yes]) + HAVE_GETHOSTBYNAME="1" + ],[ + AC_MSG_RESULT([no]) + ]) +fi + +if test "$HAVE_GETHOSTBYNAME" != "1" +then + dnl gethostbyname in the net lib - for BeOS + AC_CHECK_LIB(net, gethostbyname, + [HAVE_GETHOSTBYNAME="1" + LIBS="$LIBS -lnet" + ]) +fi + + +if test "$HAVE_GETHOSTBYNAME" != "1"; then + AC_MSG_ERROR([couldn't find libraries for gethostbyname()]) +fi + +dnl resolve lib? +AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ]) + +if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then + AC_CHECK_LIB(resolve, strcasecmp, + [LIBS="-lresolve $LIBS"], + , + -lnsl) +fi +ac_cv_func_strcasecmp="no" + +CARES_CHECK_LIBS_CONNECT + +dnl ********************************************************************** +dnl In case that function clock_gettime with monotonic timer is available, +dnl check for additional required libraries. +dnl ********************************************************************** +CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC + +AC_MSG_CHECKING([whether to use libgcc]) +AC_ARG_ENABLE(libgcc, +AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]), +[ case "$enableval" in + yes) + LIBS="$LIBS -lgcc" + AC_MSG_RESULT(yes) + ;; + *) AC_MSG_RESULT(no) + ;; + esac ], + AC_MSG_RESULT(no) +) + + +dnl Let's hope this split URL remains working: +dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \ +dnl genprogc/thread_quick_ref.htm + + +dnl ********************************************************************** +dnl Back to "normal" configuring +dnl ********************************************************************** + +dnl Checks for header files. +AC_HEADER_STDC + +CURL_CHECK_HEADER_MALLOC +CURL_CHECK_HEADER_MEMORY + +dnl check for a few basic system headers we need +AC_CHECK_HEADERS( + sys/types.h \ + sys/time.h \ + sys/select.h \ + sys/socket.h \ + sys/ioctl.h \ + sys/param.h \ + sys/uio.h \ + assert.h \ + netdb.h \ + netinet/in.h \ + netinet/tcp.h \ + net/if.h \ + errno.h \ + socket.h \ + strings.h \ + stdbool.h \ + time.h \ + limits.h \ + arpa/nameser.h \ + arpa/nameser_compat.h \ + arpa/inet.h, +dnl to do if not found +[], +dnl to do if found +[], +dnl default includes +[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +dnl We do this default-include simply to make sure that the nameser_compat.h +dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1 +dnl (and others?) is not designed to allow this. +#ifdef HAVE_ARPA_NAMESER_H +#include <arpa/nameser.h> +#endif + +dnl *Sigh* these are needed in order for net/if.h to get properly detected. +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +] +) + +dnl Checks for typedefs, structures, and compiler characteristics. +AC_C_CONST +AC_TYPE_SIZE_T +AC_HEADER_TIME +CURL_CHECK_STRUCT_TIMEVAL + +AC_CHECK_SIZEOF(size_t) +AC_CHECK_SIZEOF(int) +AC_CHECK_SIZEOF(long) +CARES_CONFIGURE_LONG +AC_CHECK_SIZEOF(time_t) + +AC_CHECK_TYPE(long long, + [AC_DEFINE(HAVE_LONGLONG, 1, + [Define to 1 if the compiler supports the 'long long' data type.])] + longlong="yes" +) + +if test "xyes" = "x$longlong"; then + AC_MSG_CHECKING([if numberLL works]) + AC_COMPILE_IFELSE([long long val = 1000LL;], + [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])] + AC_MSG_RESULT(yes), + AC_MSG_RESULT(no) + ) +fi + + +# check for ssize_t +AC_CHECK_TYPE(ssize_t, , + AC_DEFINE(ssize_t, int, [the signed version of size_t])) + +# check for bool type +AC_CHECK_TYPE([bool],[ + AC_DEFINE(HAVE_BOOL_T, 1, + [Define to 1 if bool is an available type.]) +], ,[ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#endif +]) + +CARES_CONFIGURE_ARES_SOCKLEN_T + +TYPE_IN_ADDR_T + +TYPE_SOCKADDR_STORAGE + +TYPE_SIG_ATOMIC_T + +AC_TYPE_SIGNAL + +CURL_CHECK_FUNC_RECV +CURL_CHECK_FUNC_RECVFROM +CURL_CHECK_FUNC_SEND +CURL_CHECK_MSG_NOSIGNAL + +CARES_CHECK_FUNC_CLOSESOCKET +CARES_CHECK_FUNC_CLOSESOCKET_CAMEL +CARES_CHECK_FUNC_CONNECT +CARES_CHECK_FUNC_FCNTL +CARES_CHECK_FUNC_FREEADDRINFO +CARES_CHECK_FUNC_GETADDRINFO +CARES_CHECK_FUNC_GETHOSTBYADDR +CARES_CHECK_FUNC_GETHOSTBYNAME +CARES_CHECK_FUNC_GETHOSTNAME +CARES_CHECK_FUNC_GETSERVBYPORT_R +CARES_CHECK_FUNC_INET_NTOP +CARES_CHECK_FUNC_INET_PTON +CARES_CHECK_FUNC_IOCTL +CARES_CHECK_FUNC_IOCTLSOCKET +CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL +CARES_CHECK_FUNC_SETSOCKOPT +CARES_CHECK_FUNC_SOCKET +CARES_CHECK_FUNC_STRCASECMP +CARES_CHECK_FUNC_STRCMPI +CARES_CHECK_FUNC_STRDUP +CARES_CHECK_FUNC_STRICMP +CARES_CHECK_FUNC_STRNCASECMP +CARES_CHECK_FUNC_STRNCMPI +CARES_CHECK_FUNC_STRNICMP +CARES_CHECK_FUNC_WRITEV + + +dnl check for AF_INET6 +CARES_CHECK_CONSTANT( + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ], [PF_INET6], + AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.]) +) + +dnl check for PF_INET6 +CARES_CHECK_CONSTANT( + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#endif + ], [AF_INET6], + AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.]) +) + + +dnl check for the in6_addr structure +CARES_CHECK_STRUCT( + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#endif + ], [in6_addr], + AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.]) +) + +dnl check for the sockaddr_in6 structure +CARES_CHECK_STRUCT( + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#endif + ], [sockaddr_in6], + AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1, + [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes +) + +AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id, + AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1, + [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.]) + , , + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#endif + ]) + +dnl check for the addrinfo structure +AC_CHECK_MEMBER(struct addrinfo.ai_flags, + AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1, + [Define to 1 if you have struct addrinfo.]),, + [ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#endif + ] +) + + +AC_CHECK_FUNCS([bitncmp \ + gettimeofday \ + if_indextoname +],[ +],[ + func="$ac_func" + AC_MSG_CHECKING([deeper for $func]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + $func (); + ]]) + ],[ + AC_MSG_RESULT([yes]) + eval "ac_cv_func_$func=yes" + AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$func]), [1], + [Define to 1 if you have the $func function.]) + ],[ + AC_MSG_RESULT([but still no]) + ]) +]) + + +dnl Check for inet_net_pton +AC_CHECK_FUNCS(inet_net_pton) +dnl Again, some systems have it, but not IPv6 +if test "$ac_cv_func_inet_net_pton" = "yes" ; then +AC_MSG_CHECKING(if inet_net_pton supports IPv6) +AC_TRY_RUN( + [ +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +int main() + { + struct in6_addr addr6; + if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1) + exit(1); + else + exit(0); + } + ], [ + AC_MSG_RESULT(yes) + AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.]) + ], AC_MSG_RESULT(no),AC_MSG_RESULT(no)) +fi + + +AC_CHECK_SIZEOF(struct in6_addr, , +[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#endif +] +) + +AC_CHECK_SIZEOF(struct in_addr, , +[ +#undef inline +#ifdef HAVE_WINDOWS_H +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#include <windows.h> +#ifdef HAVE_WINSOCK2_H +#include <winsock2.h> +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#endif +#else +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#endif +] +) + + +dnl Check if the getnameinfo function is available +dnl and get the types of five of its arguments. +CURL_CHECK_FUNC_GETNAMEINFO + + +AC_C_BIGENDIAN( + [AC_DEFINE(ARES_BIG_ENDIAN, 1, + [define this if ares is built for a big endian system])], + , + [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])] +) + +dnl Check for user-specified random device +AC_ARG_WITH(random, +AC_HELP_STRING([--with-random=FILE], + [read randomness from FILE (default=/dev/urandom)]), + [ RANDOM_FILE="$withval" ], + [ + dnl Check for random device. If we're cross compiling, we can't + dnl check, and it's better to assume it doesn't exist than it is + dnl to fail on AC_CHECK_FILE or later. + if test "$cross_compiling" = "no"; then + AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] ) + else + AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none]) + fi + + ] +) +if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then + AC_SUBST(RANDOM_FILE) + AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE", + [a suitable file/device to read random data from]) +fi + +CARES_CHECK_OPTION_NONBLOCKING +CARES_CHECK_NONBLOCKING_SOCKET + +CARES_CONFIGURE_SYMBOL_HIDING + +CARES_PRIVATE_LIBS="$LIBS" +AC_SUBST(CARES_PRIVATE_LIBS) + +dnl squeeze whitespace out of some variables + +squeeze CFLAGS +squeeze CPPFLAGS +squeeze DEFS +squeeze LDFLAGS +squeeze LIBS + +squeeze CARES_PRIVATE_LIBS + +AC_CONFIG_FILES([Makefile libcares.pc]) +AC_OUTPUT diff --git a/get_ver.awk b/get_ver.awk new file mode 100644 index 0000000..7b8b9e8 --- /dev/null +++ b/get_ver.awk @@ -0,0 +1,36 @@ +# *************************************************************************** +# * Project: c-ares +# * +# * $Id: get_ver.awk,v 1.1 2008-02-27 01:51:40 gknauf Exp $ +# *************************************************************************** +# awk script which fetches c-ares version number and string from input +# file and writes them to STDOUT. Here you can get an awk version for Win32: +# http://www.gknw.net/development/prgtools/awk-20070501.zip +# +BEGIN { + if (match (ARGV[1], /ares_version.h/)) { + while ((getline < ARGV[1]) > 0) { + if (match ($0, /^#define ARES_COPYRIGHT "[^"]+"$/)) { + libcares_copyright_str = substr($0, 25, length($0)-25); + } + else if (match ($0, /^#define ARES_VERSION_STR "[^"]+"$/)) { + libcares_ver_str = substr($3, 2, length($3)-2); + } + else if (match ($0, /^#define ARES_VERSION_MAJOR [0-9]+$/)) { + libcares_ver_major = substr($3, 1, length($3)); + } + else if (match ($0, /^#define ARES_VERSION_MINOR [0-9]+$/)) { + libcares_ver_minor = substr($3, 1, length($3)); + } + else if (match ($0, /^#define ARES_VERSION_PATCH [0-9]+$/)) { + libcares_ver_patch = substr($3, 1, length($3)); + } + } + libcares_ver = libcares_ver_major "," libcares_ver_minor "," libcares_ver_patch; + print "LIBCARES_VERSION = " libcares_ver ""; + print "LIBCARES_VERSION_STR = " libcares_ver_str ""; + print "LIBCARES_COPYRIGHT_STR = " libcares_copyright_str ""; + } +} + + diff --git a/inet_net_pton.c b/inet_net_pton.c new file mode 100644 index 0000000..de09ace --- /dev/null +++ b/inet_net_pton.c @@ -0,0 +1,446 @@ +/* $Id: inet_net_pton.c,v 1.17 2009-11-02 11:55:54 yangtse Exp $ */ + +/* + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1996,1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include "ares_ipv6.h" +#include "inet_net_pton.h" + +#if !defined(HAVE_INET_NET_PTON) || !defined(HAVE_INET_NET_PTON_IPV6) + +/* + * static int + * inet_net_pton_ipv4(src, dst, size) + * convert IPv4 network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not an IPv4 network specification. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0b11110000 in its fourth octet. + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning (-1), not SOCKERRNO. + * author: + * Paul Vixie (ISC), June 1996 + */ +static int +inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size) +{ + static const char xdigits[] = "0123456789abcdef"; + static const char digits[] = "0123456789"; + int n, ch, tmp = 0, dirty, bits; + const unsigned char *odst = dst; + + ch = *src++; + if (ch == '0' && (src[0] == 'x' || src[0] == 'X') + && ISXDIGIT(src[1])) { + /* Hexadecimal: Eat nybble string. */ + if (!size) + goto emsgsize; + dirty = 0; + src++; /* skip x or X. */ + while ((ch = *src++) != '\0' && ISXDIGIT(ch)) { + if (ISUPPER(ch)) + ch = tolower(ch); + n = (int)(strchr(xdigits, ch) - xdigits); + if (dirty == 0) + tmp = n; + else + tmp = (tmp << 4) | n; + if (++dirty == 2) { + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) tmp; + dirty = 0; + } + } + if (dirty) { /* Odd trailing nybble? */ + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) (tmp << 4); + } + } else if (ISDIGIT(ch)) { + /* Decimal: eat dotted digit string. */ + for (;;) { + tmp = 0; + do { + n = (int)(strchr(digits, ch) - digits); + tmp *= 10; + tmp += n; + if (tmp > 255) + goto enoent; + } while ((ch = *src++) != '\0' && + ISDIGIT(ch)); + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) tmp; + if (ch == '\0' || ch == '/') + break; + if (ch != '.') + goto enoent; + ch = *src++; + if (!ISDIGIT(ch)) + goto enoent; + } + } else + goto enoent; + + bits = -1; + if (ch == '/' && + ISDIGIT(src[0]) && dst > odst) { + /* CIDR width specifier. Nothing can follow it. */ + ch = *src++; /* Skip over the /. */ + bits = 0; + do { + n = (int)(strchr(digits, ch) - digits); + bits *= 10; + bits += n; + } while ((ch = *src++) != '\0' && ISDIGIT(ch)); + if (ch != '\0') + goto enoent; + if (bits > 32) + goto emsgsize; + } + + /* Firey death and destruction unless we prefetched EOS. */ + if (ch != '\0') + goto enoent; + + /* If nothing was written to the destination, we found no address. */ + if (dst == odst) + goto enoent; + /* If no CIDR spec was given, infer width from net class. */ + if (bits == -1) { + if (*odst >= 240) /* Class E */ + bits = 32; + else if (*odst >= 224) /* Class D */ + bits = 8; + else if (*odst >= 192) /* Class C */ + bits = 24; + else if (*odst >= 128) /* Class B */ + bits = 16; + else /* Class A */ + bits = 8; + /* If imputed mask is narrower than specified octets, widen. */ + if (bits < ((dst - odst) * 8)) + bits = (int)(dst - odst) * 8; + /* + * If there are no additional bits specified for a class D + * address adjust bits to 4. + */ + if (bits == 8 && *odst == 224) + bits = 4; + } + /* Extend network to cover the actual mask. */ + while (bits > ((dst - odst) * 8)) { + if (!size--) + goto emsgsize; + *dst++ = '\0'; + } + return (bits); + + enoent: + SET_ERRNO(ENOENT); + return (-1); + + emsgsize: + SET_ERRNO(EMSGSIZE); + return (-1); +} + +static int +getbits(const char *src, int *bitsp) +{ + static const char digits[] = "0123456789"; + int n; + int val; + char ch; + + val = 0; + n = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr(digits, ch); + if (pch != NULL) { + if (n++ != 0 && val == 0) /* no leading zeros */ + return (0); + val *= 10; + val += (pch - digits); + if (val > 128) /* range */ + return (0); + continue; + } + return (0); + } + if (n == 0) + return (0); + *bitsp = val; + return (1); +} + +static int +getv4(const char *src, unsigned char *dst, int *bitsp) +{ + static const char digits[] = "0123456789"; + unsigned char *odst = dst; + int n; + unsigned int val; + char ch; + + val = 0; + n = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr(digits, ch); + if (pch != NULL) { + if (n++ != 0 && val == 0) /* no leading zeros */ + return (0); + val *= 10; + val += (pch - digits); + if (val > 255) /* range */ + return (0); + continue; + } + if (ch == '.' || ch == '/') { + if (dst - odst > 3) /* too many octets? */ + return (0); + *dst++ = (unsigned char)val; + if (ch == '/') + return (getbits(src, bitsp)); + val = 0; + n = 0; + continue; + } + return (0); + } + if (n == 0) + return (0); + if (dst - odst > 3) /* too many octets? */ + return (0); + *dst++ = (unsigned char)val; + return (1); +} + +static int +inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size) +{ + static const char xdigits_l[] = "0123456789abcdef", + xdigits_u[] = "0123456789ABCDEF"; + unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; + const char *xdigits, *curtok; + int ch, saw_xdigit; + unsigned int val; + int digits; + int bits; + size_t bytes; + int words; + int ipv4; + + memset((tp = tmp), '\0', NS_IN6ADDRSZ); + endp = tp + NS_IN6ADDRSZ; + colonp = NULL; + /* Leading :: requires some special handling. */ + if (*src == ':') + if (*++src != ':') + goto enoent; + curtok = src; + saw_xdigit = 0; + val = 0; + digits = 0; + bits = -1; + ipv4 = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) + pch = strchr((xdigits = xdigits_u), ch); + if (pch != NULL) { + val <<= 4; + val |= (pch - xdigits); + if (++digits > 4) + goto enoent; + saw_xdigit = 1; + continue; + } + if (ch == ':') { + curtok = src; + if (!saw_xdigit) { + if (colonp) + goto enoent; + colonp = tp; + continue; + } else if (*src == '\0') + goto enoent; + if (tp + NS_INT16SZ > endp) + return (0); + *tp++ = (unsigned char)((val >> 8) & 0xff); + *tp++ = (unsigned char)(val & 0xff); + saw_xdigit = 0; + digits = 0; + val = 0; + continue; + } + if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && + getv4(curtok, tp, &bits) > 0) { + tp += NS_INADDRSZ; + saw_xdigit = 0; + ipv4 = 1; + break; /* '\0' was seen by inet_pton4(). */ + } + if (ch == '/' && getbits(src, &bits) > 0) + break; + goto enoent; + } + if (saw_xdigit) { + if (tp + NS_INT16SZ > endp) + goto enoent; + *tp++ = (unsigned char)((val >> 8) & 0xff); + *tp++ = (unsigned char)(val & 0xff); + } + if (bits == -1) + bits = 128; + + words = (bits + 15) / 16; + if (words < 2) + words = 2; + if (ipv4) + words = 8; + endp = tmp + 2 * words; + + if (colonp != NULL) { + /* + * Since some memmove()'s erroneously fail to handle + * overlapping regions, we'll do the shift by hand. + */ + const int n = (int)(tp - colonp); + int i; + + if (tp == endp) + goto enoent; + for (i = 1; i <= n; i++) { + endp[- i] = colonp[n - i]; + colonp[n - i] = 0; + } + tp = endp; + } + if (tp != endp) + goto enoent; + + bytes = (bits + 7) / 8; + if (bytes > size) + goto emsgsize; + memcpy(dst, tmp, bytes); + return (bits); + + enoent: + SET_ERRNO(ENOENT); + return (-1); + + emsgsize: + SET_ERRNO(EMSGSIZE); + return (-1); +} + +/* + * int + * inet_net_pton(af, src, dst, size) + * convert network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not a valid network specification. + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning (-1), not SOCKERRNO. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +ares_inet_net_pton(int af, const char *src, void *dst, size_t size) +{ + switch (af) { + case AF_INET: + return (inet_net_pton_ipv4(src, dst, size)); + case AF_INET6: + return (inet_net_pton_ipv6(src, dst, size)); + default: + SET_ERRNO(EAFNOSUPPORT); + return (-1); + } +} + +#endif + +#ifndef HAVE_INET_PTON +int ares_inet_pton(int af, const char *src, void *dst) +{ + int result; + size_t size; + + if (af == AF_INET) + size = sizeof(struct in_addr); + else if (af == AF_INET6) + size = sizeof(struct in6_addr); + else + { + SET_ERRNO(EAFNOSUPPORT); + return -1; + } + result = ares_inet_net_pton(af, src, dst, size); + if (result == -1 && ERRNO == ENOENT) + return 0; + return (result > -1 ? 1 : -1); +} +#endif diff --git a/inet_net_pton.h b/inet_net_pton.h new file mode 100644 index 0000000..eb38afa --- /dev/null +++ b/inet_net_pton.h @@ -0,0 +1,32 @@ +#ifndef __ARES_INET_NET_PTON_H +#define __ARES_INET_NET_PTON_H + +/* $Id: inet_net_pton.h,v 1.6 2008-09-24 19:13:02 yangtse Exp $ */ + +/* Copyright (C) 2005 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifdef HAVE_INET_PTON +#define ares_inet_pton(x,y,z) inet_pton(x,y,z) +#else +int ares_inet_pton(int af, const char *src, void *dst); +#endif +#if defined(HAVE_INET_NET_PTON) && defined(HAVE_INET_NET_PTON_IPV6) +#define ares_inet_net_pton(w,x,y,z) inet_net_pton(w,x,y,z) +#else +int ares_inet_net_pton(int af, const char *src, void *dst, size_t size); +#endif + +#endif /* __ARES_INET_NET_PTON_H */ diff --git a/inet_ntop.c b/inet_ntop.c new file mode 100644 index 0000000..5b0d097 --- /dev/null +++ b/inet_ntop.c @@ -0,0 +1,232 @@ +/* $Id: inet_ntop.c,v 1.12 2009-11-02 11:55:54 yangtse Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include "ares_ipv6.h" +#include "inet_ntop.h" + + +#ifndef HAVE_INET_NTOP + +#ifdef SPRINTF_CHAR +# define SPRINTF(x) strlen(sprintf/**/x) +#else +# define SPRINTF(x) ((size_t)sprintf x) +#endif + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size); +static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size); + +/* char * + * inet_ntop(af, src, dst, size) + * convert a network format address to presentation format. + * return: + * pointer to presentation format address (`dst'), or NULL (see errno). + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning NULL, not SOCKERRNO. + * author: + * Paul Vixie, 1996. + */ +const char * +ares_inet_ntop(int af, const void *src, char *dst, size_t size) +{ + switch (af) + { + case AF_INET: + return (inet_ntop4(src, dst, size)); + case AF_INET6: + return (inet_ntop6(src, dst, size)); + default: + SET_ERRNO(EAFNOSUPPORT); + return (NULL); + } + /* NOTREACHED */ +} + +/* const char * + * inet_ntop4(src, dst, size) + * format an IPv4 address, more or less like inet_ntoa() + * return: + * `dst' (as a const) + * notes: + * (1) uses no statics + * (2) takes a unsigned char* not an in_addr as input + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop4(const unsigned char *src, char *dst, size_t size) +{ + static const char fmt[] = "%u.%u.%u.%u"; + char tmp[sizeof "255.255.255.255"]; + + if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) + { + SET_ERRNO(ENOSPC); + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} + +/* const char * + * inet_ntop6(src, dst, size) + * convert IPv6 binary address into presentation (printable) format + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop6(const unsigned char *src, char *dst, size_t size) +{ + /* + * Note that int32_t and int16_t need only be "at least" large enough + * to contain a value of the specified size. On some systems, like + * Crays, there is no such thing as an integer variable with 16 bits. + * Keep this in mind if you think this function should have been coded + * to use pointer overlays. All the world's not a VAX. + */ + char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; + char *tp; + struct { + long base; + long len; + } best, cur; + unsigned long words[NS_IN6ADDRSZ / NS_INT16SZ]; + int i; + + /* + * Preprocess: + * Copy the input (bytewise) array into a wordwise array. + * Find the longest run of 0x00's in src[] for :: shorthanding. + */ + memset(words, '\0', sizeof(words)); + for (i = 0; i < NS_IN6ADDRSZ; i++) + words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); + + best.base = -1; + cur.base = -1; + best.len = 0; + cur.len = 0; + + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) + { + if (words[i] == 0) + { + if (cur.base == -1) + cur.base = i, cur.len = 1; + else + cur.len++; + } + else + { + if (cur.base != -1) + { + if (best.base == -1 || cur.len > best.len) + best = cur; + cur.base = -1; + } + } + } + if (cur.base != -1) + { + if (best.base == -1 || cur.len > best.len) + best = cur; + } + if (best.base != -1 && best.len < 2) + best.base = -1; + + /* + * Format the result. + */ + tp = tmp; + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) + { + /* Are we inside the best run of 0x00's? */ + if (best.base != -1 && i >= best.base && + i < (best.base + best.len)) + { + if (i == best.base) + *tp++ = ':'; + continue; + } + /* Are we following an initial run of 0x00s or any real hex? */ + if (i != 0) + *tp++ = ':'; + /* Is this address an encapsulated IPv4? */ + if (i == 6 && best.base == 0 && + (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) + { + if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) + return (NULL); + tp += strlen(tp); + break; + } + tp += SPRINTF((tp, "%lx", words[i])); + } + + /* Was it a trailing run of 0x00's? */ + if (best.base != -1 && (best.base + best.len) == (NS_IN6ADDRSZ / NS_INT16SZ)) + *tp++ = ':'; + *tp++ = '\0'; + + /* + * Check for overflow, copy, and we're done. + */ + if ((size_t)(tp - tmp) > size) + { + SET_ERRNO(ENOSPC); + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} +#endif + diff --git a/inet_ntop.h b/inet_ntop.h new file mode 100644 index 0000000..923689e --- /dev/null +++ b/inet_ntop.h @@ -0,0 +1,27 @@ +#ifndef __ARES_INET_NTOP_H +#define __ARES_INET_NTOP_H + +/* $Id: inet_ntop.h,v 1.4 2008-09-24 16:43:12 yangtse Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifdef HAVE_INET_NTOP +#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z) +#else +const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size); +#endif + +#endif /* __ARES_INET_NTOP_H */ diff --git a/install-sh b/install-sh new file mode 100755 index 0000000..e843669 --- /dev/null +++ b/install-sh @@ -0,0 +1,250 @@ +#!/bin/sh +# +# install - install a program, script, or datafile +# This comes from X11R5 (mit/util/scripts/install.sh). +# +# Copyright 1991 by the Massachusetts Institute of Technology +# +# Permission to use, copy, modify, distribute, and sell this software and its +# documentation for any purpose is hereby granted without fee, provided that +# the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# `make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. It can only install one file at a time, a restriction +# shared with many OS's install programs. + + +# set DOITPROG to echo to test this script + +# Don't use :- since 4.3BSD and earlier shells don't like it. +doit="${DOITPROG-}" + + +# put in absolute paths if you don't have them in your path; or use env. vars. + +mvprog="${MVPROG-mv}" +cpprog="${CPPROG-cp}" +chmodprog="${CHMODPROG-chmod}" +chownprog="${CHOWNPROG-chown}" +chgrpprog="${CHGRPPROG-chgrp}" +stripprog="${STRIPPROG-strip}" +rmprog="${RMPROG-rm}" +mkdirprog="${MKDIRPROG-mkdir}" + +transformbasename="" +transform_arg="" +instcmd="$mvprog" +chmodcmd="$chmodprog 0755" +chowncmd="" +chgrpcmd="" +stripcmd="" +rmcmd="$rmprog -f" +mvcmd="$mvprog" +src="" +dst="" +dir_arg="" + +while [ x"$1" != x ]; do + case $1 in + -c) instcmd="$cpprog" + shift + continue;; + + -d) dir_arg=true + shift + continue;; + + -m) chmodcmd="$chmodprog $2" + shift + shift + continue;; + + -o) chowncmd="$chownprog $2" + shift + shift + continue;; + + -g) chgrpcmd="$chgrpprog $2" + shift + shift + continue;; + + -s) stripcmd="$stripprog" + shift + continue;; + + -t=*) transformarg=`echo $1 | sed 's/-t=//'` + shift + continue;; + + -b=*) transformbasename=`echo $1 | sed 's/-b=//'` + shift + continue;; + + *) if [ x"$src" = x ] + then + src=$1 + else + # this colon is to work around a 386BSD /bin/sh bug + : + dst=$1 + fi + shift + continue;; + esac +done + +if [ x"$src" = x ] +then + echo "install: no input file specified" + exit 1 +else + true +fi + +if [ x"$dir_arg" != x ]; then + dst=$src + src="" + + if [ -d $dst ]; then + instcmd=: + else + instcmd=mkdir + fi +else + +# Waiting for this to be detected by the "$instcmd $src $dsttmp" command +# might cause directories to be created, which would be especially bad +# if $src (and thus $dsttmp) contains '*'. + + if [ -f $src -o -d $src ] + then + true + else + echo "install: $src does not exist" + exit 1 + fi + + if [ x"$dst" = x ] + then + echo "install: no destination specified" + exit 1 + else + true + fi + +# If destination is a directory, append the input filename; if your system +# does not like double slashes in filenames, you may need to add some logic + + if [ -d $dst ] + then + dst="$dst"/`basename $src` + else + true + fi +fi + +## this sed command emulates the dirname command +dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` + +# Make sure that the destination directory exists. +# this part is taken from Noah Friedman's mkinstalldirs script + +# Skip lots of stat calls in the usual case. +if [ ! -d "$dstdir" ]; then +defaultIFS=' +' +IFS="${IFS-${defaultIFS}}" + +oIFS="${IFS}" +# Some sh's can't handle IFS=/ for some reason. +IFS='%' +set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'` +IFS="${oIFS}" + +pathcomp='' + +while [ $# -ne 0 ] ; do + pathcomp="${pathcomp}${1}" + shift + + if [ ! -d "${pathcomp}" ] ; + then + $mkdirprog "${pathcomp}" + else + true + fi + + pathcomp="${pathcomp}/" +done +fi + +if [ x"$dir_arg" != x ] +then + $doit $instcmd $dst && + + if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi +else + +# If we're going to rename the final executable, determine the name now. + + if [ x"$transformarg" = x ] + then + dstfile=`basename $dst` + else + dstfile=`basename $dst $transformbasename | + sed $transformarg`$transformbasename + fi + +# don't allow the sed command to completely eliminate the filename + + if [ x"$dstfile" = x ] + then + dstfile=`basename $dst` + else + true + fi + +# Make a temp file name in the proper directory. + + dsttmp=$dstdir/#inst.$$# + +# Move or copy the file name to the temp name + + $doit $instcmd $src $dsttmp && + + trap "rm -f ${dsttmp}" 0 && + +# and set any options; do chmod last to preserve setuid bits + +# If any of these fail, we abort the whole thing. If we want to +# ignore errors from any of these, just make sure not to ignore +# errors from the above "$doit $instcmd $src $dsttmp" command. + + if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && + if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && + if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && + if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && + +# Now rename the file to the real destination. + + $doit $rmcmd -f $dstdir/$dstfile && + $doit $mvcmd $dsttmp $dstdir/$dstfile + +fi && + + +exit 0 diff --git a/libcares.pc.in b/libcares.pc.in new file mode 100644 index 0000000..46e4d9b --- /dev/null +++ b/libcares.pc.in @@ -0,0 +1,21 @@ +#*************************************************************************** +# Project ___ __ _ _ __ ___ ___ +# / __|____ / _` | '__/ _ \/ __| +# | (_|_____| (_| | | | __/\__ \ +# \___| \__,_|_| \___||___/ +# $Id: libcares.pc.in,v 1.3 2008-06-09 01:07:00 yangtse Exp $ +# +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: c-ares +URL: http://daniel.haxx.se/projects/c-ares/ +Description: asynchronous DNS lookup library +Version: @VERSION@ +Requires: +Requires.private: +Cflags: -I${includedir} +Libs: -L${libdir} -lcares +Libs.private: @CARES_PRIVATE_LIBS@ diff --git a/m4/.cvsignore b/m4/.cvsignore new file mode 100644 index 0000000..38066dd --- /dev/null +++ b/m4/.cvsignore @@ -0,0 +1,5 @@ +libtool.m4 +ltoptions.m4 +ltsugar.m4 +ltversion.m4 +lt~obsolete.m4 diff --git a/m4/CVS/Entries b/m4/CVS/Entries new file mode 100644 index 0000000..f5469cd --- /dev/null +++ b/m4/CVS/Entries @@ -0,0 +1,8 @@ +/.cvsignore/1.1/Fri Feb 13 06:34:44 2009// +/cares-compilers.m4/1.63/Mon Nov 16 23:01:37 2009// +/cares-confopts.m4/1.8/Sat Oct 31 04:16:40 2009// +/cares-functions.m4/1.39/Mon Nov 16 01:56:16 2009// +/cares-override.m4/1.3/Mon Oct 19 04:11:54 2009// +/cares-reentrant.m4/1.5/Sat Nov 14 18:51:37 2009// +/cares-system.m4/1.3/Mon Oct 19 04:13:12 2009// +D diff --git a/m4/CVS/Repository b/m4/CVS/Repository new file mode 100644 index 0000000..c363eba --- /dev/null +++ b/m4/CVS/Repository @@ -0,0 +1 @@ +curl/ares/m4 diff --git a/m4/CVS/Root b/m4/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/m4/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/m4/CVS/Template b/m4/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/m4/CVS/Template diff --git a/m4/cares-compilers.m4 b/m4/cares-compilers.m4 new file mode 100644 index 0000000..74950c7 --- /dev/null +++ b/m4/cares-compilers.m4 @@ -0,0 +1,1470 @@ +#*************************************************************************** +# $Id: cares-compilers.m4,v 1.63 2009-11-16 23:01:37 yangtse Exp $ +# +# Copyright (C) 2009 by Daniel Stenberg et al +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose and without fee is hereby granted, provided +# that the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 63 + + +dnl CARES_CHECK_COMPILER +dnl ------------------------------------------------- +dnl Verify if the C compiler being used is known. + +AC_DEFUN([CARES_CHECK_COMPILER], [ + AC_BEFORE([$0],[CARES_CHECK_NO_UNDEFINED])dnl + # + compiler_id="unknown" + compiler_num="0" + # + flags_dbg_all="unknown" + flags_dbg_yes="unknown" + flags_dbg_off="unknown" + flags_opt_all="unknown" + flags_opt_yes="unknown" + flags_opt_off="unknown" + # + CARES_CHECK_COMPILER_DEC_C + CARES_CHECK_COMPILER_HPUX_C + CARES_CHECK_COMPILER_IBM_C + CARES_CHECK_COMPILER_INTEL_C + CARES_CHECK_COMPILER_GNU_C + CARES_CHECK_COMPILER_LCC + CARES_CHECK_COMPILER_SGI_MIPSPRO_C + CARES_CHECK_COMPILER_SGI_MIPS_C + CARES_CHECK_COMPILER_SUNPRO_C + CARES_CHECK_COMPILER_TINY_C + CARES_CHECK_COMPILER_WATCOM_C + # + if test "$compiler_id" = "unknown"; then + cat <<_EOF 1>&2 +*** +*** Warning: This configure script does not have information about the +*** compiler you are using, relative to the flags required to enable or +*** disable generation of debug info, optimization options or warnings. +*** +*** Whatever settings are present in CFLAGS will be used for this run. +*** +*** If you wish to help the c-ares project to better support your compiler +*** you can report this and the required info on the c-ares development +*** mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ +*** +_EOF + fi +]) + + +dnl CARES_CHECK_COMPILER_DEC_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is DEC C. + +AC_DEFUN([CARES_CHECK_COMPILER_DEC_C], [ + AC_MSG_CHECKING([if compiler is DEC/Compaq/HP C]) + CURL_CHECK_DEF([__DECC], [], [silent]) + CURL_CHECK_DEF([__DECC_VER], [], [silent]) + if test "$curl_cv_have_def___DECC" = "yes" && + test "$curl_cv_have_def___DECC_VER" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="DEC_C" + flags_dbg_all="-g -g0 -g1 -g2 -g3" + flags_dbg_yes="-g2" + flags_dbg_off="-g0" + flags_opt_all="-O -O0 -O1 -O2 -O3 -O4" + flags_opt_yes="-O1" + flags_opt_off="-O0" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_GNU_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is GNU C. + +AC_DEFUN([CARES_CHECK_COMPILER_GNU_C], [ + AC_REQUIRE([CARES_CHECK_COMPILER_INTEL_C])dnl + AC_MSG_CHECKING([if compiler is GNU C]) + CURL_CHECK_DEF([__GNUC__], [], [silent]) + if test "$curl_cv_have_def___GNUC__" = "yes" && + test "$compiler_id" = "unknown"; then + AC_MSG_RESULT([yes]) + compiler_id="GNU_C" + gccver=`$CC -dumpversion` + gccvhi=`echo $gccver | cut -d . -f1` + gccvlo=`echo $gccver | cut -d . -f2` + compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null` + flags_dbg_all="-g -g0 -g1 -g2 -g3" + flags_dbg_all="$flags_dbg_all -ggdb" + flags_dbg_all="$flags_dbg_all -gstabs" + flags_dbg_all="$flags_dbg_all -gstabs+" + flags_dbg_all="$flags_dbg_all -gcoff" + flags_dbg_all="$flags_dbg_all -gxcoff" + flags_dbg_all="$flags_dbg_all -gdwarf-2" + flags_dbg_all="$flags_dbg_all -gvms" + flags_dbg_yes="-g" + flags_dbg_off="-g0" + flags_opt_all="-O -O0 -O1 -O2 -O3 -Os" + flags_opt_yes="-O2" + flags_opt_off="-O0" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_HPUX_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is HP-UX C. + +AC_DEFUN([CARES_CHECK_COMPILER_HPUX_C], [ + AC_MSG_CHECKING([if compiler is HP-UX C]) + CURL_CHECK_DEF([__HP_cc], [], [silent]) + if test "$curl_cv_have_def___HP_cc" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="HP_UX_C" + flags_dbg_all="-g -s" + flags_dbg_yes="-g" + flags_dbg_off="-s" + flags_opt_all="-O +O0 +O1 +O2 +O3 +O4" + flags_opt_yes="+O2" + flags_opt_off="+O0" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_IBM_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is IBM C. + +AC_DEFUN([CARES_CHECK_COMPILER_IBM_C], [ + AC_MSG_CHECKING([if compiler is IBM C]) + CURL_CHECK_DEF([__IBMC__], [], [silent]) + if test "$curl_cv_have_def___IBMC__" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="IBM_C" + flags_dbg_all="-g -g0 -g1 -g2 -g3" + flags_dbg_yes="-g" + flags_dbg_off="" + flags_opt_all="-O -O0 -O1 -O2 -O3 -O4 -O5" + flags_opt_all="$flags_opt_all -qnooptimize" + flags_opt_all="$flags_opt_all -qoptimize=0" + flags_opt_all="$flags_opt_all -qoptimize=1" + flags_opt_all="$flags_opt_all -qoptimize=2" + flags_opt_all="$flags_opt_all -qoptimize=3" + flags_opt_all="$flags_opt_all -qoptimize=4" + flags_opt_all="$flags_opt_all -qoptimize=5" + flags_opt_yes="-O2" + flags_opt_off="-qnooptimize" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_INTEL_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is Intel C. + +AC_DEFUN([CARES_CHECK_COMPILER_INTEL_C], [ + AC_BEFORE([$0],[CARES_CHECK_COMPILER_GNU_C])dnl + AC_MSG_CHECKING([if compiler is Intel C]) + CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent]) + if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_num="$curl_cv_def___INTEL_COMPILER" + CURL_CHECK_DEF([__unix__], [], [silent]) + if test "$curl_cv_have_def___unix__" = "yes"; then + compiler_id="INTEL_UNIX_C" + flags_dbg_all="-g -g0" + flags_dbg_yes="-g" + flags_dbg_off="-g0" + flags_opt_all="-O -O0 -O1 -O2 -O3 -Os" + flags_opt_yes="-O2" + flags_opt_off="-O0" + else + compiler_id="INTEL_WINDOWS_C" + flags_dbg_all="/ZI /Zi /zI /zi /ZD /Zd /zD /zd /Z7 /z7 /Oy /Oy-" + flags_dbg_all="$flags_dbg_all /debug" + flags_dbg_all="$flags_dbg_all /debug:none" + flags_dbg_all="$flags_dbg_all /debug:minimal" + flags_dbg_all="$flags_dbg_all /debug:partial" + flags_dbg_all="$flags_dbg_all /debug:full" + flags_dbg_all="$flags_dbg_all /debug:semantic_stepping" + flags_dbg_all="$flags_dbg_all /debug:extended" + flags_dbg_yes="/Zi /Oy-" + flags_dbg_off="/debug:none /Oy-" + flags_opt_all="/O /O0 /O1 /O2 /O3 /Od /Og /Og- /Oi /Oi-" + flags_opt_yes="/O2" + flags_opt_off="/Od" + fi + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_LCC +dnl ------------------------------------------------- +dnl Verify if compiler being used is LCC. + +AC_DEFUN([CARES_CHECK_COMPILER_LCC], [ + AC_MSG_CHECKING([if compiler is LCC]) + CURL_CHECK_DEF([__LCC__], [], [silent]) + if test "$curl_cv_have_def___LCC__" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="LCC" + flags_dbg_all="-g" + flags_dbg_yes="-g" + flags_dbg_off="" + flags_opt_all="" + flags_opt_yes="" + flags_opt_off="" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_SGI_MIPS_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is SGI MIPS C. + +AC_DEFUN([CARES_CHECK_COMPILER_SGI_MIPS_C], [ + AC_REQUIRE([CARES_CHECK_COMPILER_SGI_MIPSPRO_C])dnl + AC_MSG_CHECKING([if compiler is SGI MIPS C]) + CURL_CHECK_DEF([__GNUC__], [], [silent]) + CURL_CHECK_DEF([__sgi], [], [silent]) + if test "$curl_cv_have_def___GNUC__" = "no" && + test "$curl_cv_have_def___sgi" = "yes" && + test "$compiler_id" = "unknown"; then + AC_MSG_RESULT([yes]) + compiler_id="SGI_MIPS_C" + flags_dbg_all="-g -g0 -g1 -g2 -g3" + flags_dbg_yes="-g" + flags_dbg_off="-g0" + flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast" + flags_opt_yes="-O2" + flags_opt_off="-O0" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_SGI_MIPSPRO_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is SGI MIPSpro C. + +AC_DEFUN([CARES_CHECK_COMPILER_SGI_MIPSPRO_C], [ + AC_BEFORE([$0],[CARES_CHECK_COMPILER_SGI_MIPS_C])dnl + AC_MSG_CHECKING([if compiler is SGI MIPSpro C]) + CURL_CHECK_DEF([__GNUC__], [], [silent]) + CURL_CHECK_DEF([_COMPILER_VERSION], [], [silent]) + CURL_CHECK_DEF([_SGI_COMPILER_VERSION], [], [silent]) + if test "$curl_cv_have_def___GNUC__" = "no" && + (test "$curl_cv_have_def__SGI_COMPILER_VERSION" = "yes" || + test "$curl_cv_have_def__COMPILER_VERSION" = "yes"); then + AC_MSG_RESULT([yes]) + compiler_id="SGI_MIPSPRO_C" + flags_dbg_all="-g -g0 -g1 -g2 -g3" + flags_dbg_yes="-g" + flags_dbg_off="-g0" + flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast" + flags_opt_yes="-O2" + flags_opt_off="-O0" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_SUNPRO_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is SunPro C. + +AC_DEFUN([CARES_CHECK_COMPILER_SUNPRO_C], [ + AC_MSG_CHECKING([if compiler is SunPro C]) + CURL_CHECK_DEF([__SUNPRO_C], [], [silent]) + if test "$curl_cv_have_def___SUNPRO_C" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="SUNPRO_C" + flags_dbg_all="-g -s" + flags_dbg_yes="-g" + flags_dbg_off="-s" + flags_opt_all="-O -xO -xO1 -xO2 -xO3 -xO4 -xO5" + flags_opt_yes="-xO2" + flags_opt_off="" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_TINY_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is Tiny C. + +AC_DEFUN([CARES_CHECK_COMPILER_TINY_C], [ + AC_MSG_CHECKING([if compiler is Tiny C]) + CURL_CHECK_DEF([__TINYC__], [], [silent]) + if test "$curl_cv_have_def___TINYC__" = "yes"; then + AC_MSG_RESULT([yes]) + compiler_id="TINY_C" + flags_dbg_all="-g -b" + flags_dbg_yes="-g" + flags_dbg_off="" + flags_opt_all="" + flags_opt_yes="" + flags_opt_off="" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CHECK_COMPILER_WATCOM_C +dnl ------------------------------------------------- +dnl Verify if compiler being used is Watcom C. + +AC_DEFUN([CARES_CHECK_COMPILER_WATCOM_C], [ + AC_MSG_CHECKING([if compiler is Watcom C]) + CURL_CHECK_DEF([__WATCOMC__], [], [silent]) + if test "$curl_cv_have_def___WATCOMC__" = "yes"; then + AC_MSG_RESULT([yes]) + CURL_CHECK_DEF([__UNIX__], [], [silent]) + if test "$curl_cv_have_def___UNIX__" = "yes"; then + compiler_id="WATCOM_UNIX_C" + flags_dbg_all="-g1 -g1+ -g2 -g3" + flags_dbg_yes="-g2" + flags_dbg_off="" + flags_opt_all="-O0 -O1 -O2 -O3" + flags_opt_yes="-O2" + flags_opt_off="-O0" + else + compiler_id="WATCOM_WINDOWS_C" + flags_dbg_all="" + flags_dbg_yes="" + flags_dbg_off="" + flags_opt_all="" + flags_opt_yes="" + flags_opt_off="" + fi + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_CONVERT_INCLUDE_TO_ISYSTEM +dnl ------------------------------------------------- +dnl Changes standard include paths present in CFLAGS +dnl and CPPFLAGS into isystem include paths. This is +dnl done to prevent GNUC from generating warnings on +dnl headers from these locations, although on ancient +dnl GNUC versions these warnings are not silenced. + +AC_DEFUN([CARES_CONVERT_INCLUDE_TO_ISYSTEM], [ + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + tmp_has_include="no" + tmp_chg_FLAGS="$CFLAGS" + for word1 in $tmp_chg_FLAGS; do + case "$word1" in + -I*) + tmp_has_include="yes" + ;; + esac + done + if test "$tmp_has_include" = "yes"; then + tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'` + tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'` + CFLAGS="$tmp_chg_FLAGS" + squeeze CFLAGS + fi + tmp_has_include="no" + tmp_chg_FLAGS="$CPPFLAGS" + for word1 in $tmp_chg_FLAGS; do + case "$word1" in + -I*) + tmp_has_include="yes" + ;; + esac + done + if test "$tmp_has_include" = "yes"; then + tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/^-I/ -isystem /g'` + tmp_chg_FLAGS=`echo "$tmp_chg_FLAGS" | "$SED" 's/ -I/ -isystem /g'` + CPPFLAGS="$tmp_chg_FLAGS" + squeeze CPPFLAGS + fi +]) + + +dnl CARES_COMPILER_WORKS_IFELSE ([ACTION-IF-WORKS], [ACTION-IF-NOT-WORKS]) +dnl ------------------------------------------------- +dnl Verify if the C compiler seems to work with the +dnl settings that are 'active' at the time the test +dnl is performed. + +AC_DEFUN([CARES_COMPILER_WORKS_IFELSE], [ + dnl compilation capability verification + tmp_compiler_works="unknown" + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + int i = 1; + return i; + ]]) + ],[ + tmp_compiler_works="yes" + ],[ + tmp_compiler_works="no" + echo " " >&6 + sed 's/^/cc-fail: /' conftest.err >&6 + echo " " >&6 + ]) + dnl linking capability verification + if test "$tmp_compiler_works" = "yes"; then + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + int i = 1; + return i; + ]]) + ],[ + tmp_compiler_works="yes" + ],[ + tmp_compiler_works="no" + echo " " >&6 + sed 's/^/link-fail: /' conftest.err >&6 + echo " " >&6 + ]) + fi + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$tmp_compiler_works" = "yes"; then + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ +# ifdef __STDC__ +# include <stdlib.h> +# endif + ]],[[ + int i = 0; + exit(i); + ]]) + ],[ + tmp_compiler_works="yes" + ],[ + tmp_compiler_works="no" + echo " " >&6 + echo "run-fail: test program exited with status $ac_status" >&6 + echo " " >&6 + ]) + fi + dnl branch upon test result + if test "$tmp_compiler_works" = "yes"; then + ifelse($1,,:,[$1]) + ifelse($2,,,[else + $2]) + fi +]) + + +dnl CARES_SET_COMPILER_BASIC_OPTS +dnl ------------------------------------------------- +dnl Sets compiler specific options/flags which do not +dnl depend on configure's debug, optimize or warnings +dnl options. + +AC_DEFUN([CARES_SET_COMPILER_BASIC_OPTS], [ + AC_REQUIRE([CARES_CHECK_COMPILER])dnl + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + # + if test "$compiler_id" != "unknown"; then + # + if test "$compiler_id" = "GNU_C"; then + CARES_CONVERT_INCLUDE_TO_ISYSTEM + fi + # + tmp_save_CPPFLAGS="$CPPFLAGS" + tmp_save_CFLAGS="$CFLAGS" + tmp_CPPFLAGS="" + tmp_CFLAGS="" + # + case "$compiler_id" in + # + DEC_C) + # + dnl Select strict ANSI C compiler mode + tmp_CFLAGS="$tmp_CFLAGS -std1" + dnl Turn off optimizer ANSI C aliasing rules + tmp_CFLAGS="$tmp_CFLAGS -noansi_alias" + dnl Generate warnings for missing function prototypes + tmp_CFLAGS="$tmp_CFLAGS -warnprotos" + dnl Change some warnings into fatal errors + tmp_CFLAGS="$tmp_CFLAGS -msg_fatal toofewargs,toomanyargs" + ;; + # + GNU_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + HP_UX_C) + # + dnl Disallow run-time dereferencing of null pointers + tmp_CFLAGS="$tmp_CFLAGS -z" + dnl Disable some remarks + dnl #4227: padding struct with n bytes to align member + dnl #4255: padding size of struct with n bytes to alignment boundary + tmp_CFLAGS="$tmp_CFLAGS +W 4227,4255" + ;; + # + IBM_C) + # + dnl Ensure that compiler optimizations are always thread-safe. + tmp_CFLAGS="$tmp_CFLAGS -qthreaded" + dnl Disable type based strict aliasing optimizations, using worst + dnl case aliasing assumptions when compiling. Type based aliasing + dnl would restrict the lvalues that could be safely used to access + dnl a data object. + tmp_CFLAGS="$tmp_CFLAGS -qnoansialias" + dnl Force compiler to stop after the compilation phase, without + dnl generating an object code file when compilation has errors. + tmp_CFLAGS="$tmp_CFLAGS -qhalt=e" + ;; + # + INTEL_UNIX_C) + # + dnl On unix this compiler uses gcc's header files, so + dnl we select ANSI C89 dialect plus GNU extensions. + tmp_CFLAGS="$tmp_CFLAGS -std=gnu89" + dnl Change some warnings into errors + dnl #140: too many arguments in function call + dnl #147: declaration is incompatible with 'previous one' + dnl #165: too few arguments in function call + dnl #266: function declared implicitly + tmp_CPPFLAGS="$tmp_CPPFLAGS -we 140,147,165,266" + dnl Disable some remarks + dnl #279: controlling expression is constant + dnl #981: operands are evaluated in unspecified order + dnl #1469: "cc" clobber ignored + tmp_CPPFLAGS="$tmp_CPPFLAGS -wd 279,981,1469" + ;; + # + INTEL_WINDOWS_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + LCC) + # + dnl Disallow run-time dereferencing of null pointers + tmp_CFLAGS="$tmp_CFLAGS -n" + ;; + # + SGI_MIPS_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + SGI_MIPSPRO_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + SUNPRO_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + TINY_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + WATCOM_UNIX_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + WATCOM_WINDOWS_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + esac + # + squeeze tmp_CPPFLAGS + squeeze tmp_CFLAGS + # + if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then + AC_MSG_CHECKING([if compiler accepts some basic options]) + CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" + squeeze CPPFLAGS + squeeze CFLAGS + CARES_COMPILER_WORKS_IFELSE([ + AC_MSG_RESULT([yes]) + AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS]) + dnl restore initial settings + CPPFLAGS="$tmp_save_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS" + ]) + fi + # + fi +]) + + +dnl CARES_SET_COMPILER_DEBUG_OPTS +dnl ------------------------------------------------- +dnl Sets compiler specific options/flags which depend +dnl on configure's debug option. + +AC_DEFUN([CARES_SET_COMPILER_DEBUG_OPTS], [ + AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl + AC_REQUIRE([CARES_CHECK_COMPILER])dnl + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + # + if test "$compiler_id" != "unknown"; then + # + tmp_save_CFLAGS="$CFLAGS" + tmp_save_CPPFLAGS="$CPPFLAGS" + # + tmp_options="" + tmp_CFLAGS="$CFLAGS" + tmp_CPPFLAGS="$CPPFLAGS" + CARES_VAR_STRIP([tmp_CFLAGS],[$flags_dbg_all]) + CARES_VAR_STRIP([tmp_CPPFLAGS],[$flags_dbg_all]) + # + if test "$want_debug" = "yes"; then + AC_MSG_CHECKING([if compiler accepts debug enabling options]) + tmp_options="$flags_dbg_yes" + fi + if test "$want_debug" = "no"; then + AC_MSG_CHECKING([if compiler accepts debug disabling options]) + tmp_options="$flags_dbg_off" + fi + # + CPPFLAGS="$tmp_CPPFLAGS" + CFLAGS="$tmp_CFLAGS $tmp_options" + squeeze CPPFLAGS + squeeze CFLAGS + CARES_COMPILER_WORKS_IFELSE([ + AC_MSG_RESULT([yes]) + AC_MSG_NOTICE([compiler options added: $tmp_options]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([compiler options rejected: $tmp_options]) + dnl restore initial settings + CPPFLAGS="$tmp_save_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS" + ]) + # + fi +]) + + +dnl CARES_SET_COMPILER_OPTIMIZE_OPTS +dnl ------------------------------------------------- +dnl Sets compiler specific options/flags which depend +dnl on configure's optimize option. + +AC_DEFUN([CARES_SET_COMPILER_OPTIMIZE_OPTS], [ + AC_REQUIRE([CARES_CHECK_OPTION_OPTIMIZE])dnl + AC_REQUIRE([CARES_CHECK_COMPILER])dnl + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + # + if test "$compiler_id" != "unknown"; then + # + tmp_save_CFLAGS="$CFLAGS" + tmp_save_CPPFLAGS="$CPPFLAGS" + # + tmp_options="" + tmp_CFLAGS="$CFLAGS" + tmp_CPPFLAGS="$CPPFLAGS" + honor_optimize_option="yes" + # + dnl If optimization request setting has not been explicitly specified, + dnl it has been derived from the debug setting and initially assumed. + dnl This initially assumed optimizer setting will finally be ignored + dnl if CFLAGS or CPPFLAGS already hold optimizer flags. This implies + dnl that an initially assumed optimizer setting might not be honored. + # + if test "$want_optimize" = "assume_no" || + test "$want_optimize" = "assume_yes"; then + AC_MSG_CHECKING([if compiler optimizer assumed setting might be used]) + CARES_VAR_MATCH_IFELSE([tmp_CFLAGS],[$flags_opt_all],[ + honor_optimize_option="no" + ]) + CARES_VAR_MATCH_IFELSE([tmp_CPPFLAGS],[$flags_opt_all],[ + honor_optimize_option="no" + ]) + AC_MSG_RESULT([$honor_optimize_option]) + if test "$honor_optimize_option" = "yes"; then + if test "$want_optimize" = "assume_yes"; then + want_optimize="yes" + fi + if test "$want_optimize" = "assume_no"; then + want_optimize="no" + fi + fi + fi + # + if test "$honor_optimize_option" = "yes"; then + CARES_VAR_STRIP([tmp_CFLAGS],[$flags_opt_all]) + CARES_VAR_STRIP([tmp_CPPFLAGS],[$flags_opt_all]) + if test "$want_optimize" = "yes"; then + AC_MSG_CHECKING([if compiler accepts optimizer enabling options]) + tmp_options="$flags_opt_yes" + fi + if test "$want_optimize" = "no"; then + AC_MSG_CHECKING([if compiler accepts optimizer disabling options]) + tmp_options="$flags_opt_off" + fi + CPPFLAGS="$tmp_CPPFLAGS" + CFLAGS="$tmp_CFLAGS $tmp_options" + squeeze CPPFLAGS + squeeze CFLAGS + CARES_COMPILER_WORKS_IFELSE([ + AC_MSG_RESULT([yes]) + AC_MSG_NOTICE([compiler options added: $tmp_options]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([compiler options rejected: $tmp_options]) + dnl restore initial settings + CPPFLAGS="$tmp_save_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS" + ]) + fi + # + fi +]) + + +dnl CARES_SET_COMPILER_WARNING_OPTS +dnl ------------------------------------------------- +dnl Sets compiler options/flags which depend on +dnl configure's warnings given option. + +AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [ + AC_REQUIRE([CARES_CHECK_OPTION_WARNINGS])dnl + AC_REQUIRE([CARES_CHECK_COMPILER])dnl + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + # + if test "$compiler_id" != "unknown"; then + # + tmp_save_CPPFLAGS="$CPPFLAGS" + tmp_save_CFLAGS="$CFLAGS" + tmp_CPPFLAGS="" + tmp_CFLAGS="" + # + case "$compiler_id" in + # + DEC_C) + # + if test "$want_warnings" = "yes"; then + dnl Select a higher warning level than default level2 + tmp_CFLAGS="$tmp_CFLAGS -msg_enable level3" + fi + ;; + # + GNU_C) + # + if test "$want_warnings" = "yes"; then + # + dnl Do not enable -pedantic when cross-compiling with a gcc older + dnl than 3.0, to avoid warnings from third party system headers. + if test "x$cross_compiling" != "xyes" || + test "$compiler_num" -ge "300"; then + tmp_CFLAGS="$tmp_CFLAGS -pedantic" + fi + # + dnl Set of options we believe *ALL* gcc versions support: + tmp_CFLAGS="$tmp_CFLAGS -Wall -W" + # + dnl Only gcc 1.4 or later + if test "$compiler_num" -ge "104"; then + tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings" + dnl If not cross-compiling with a gcc older than 3.0 + if test "x$cross_compiling" != "xyes" || + test "$compiler_num" -ge "300"; then + tmp_CFLAGS="$tmp_CFLAGS -Wunused -Wshadow" + fi + fi + # + dnl Only gcc 2.7 or later + if test "$compiler_num" -ge "207"; then + tmp_CFLAGS="$tmp_CFLAGS -Winline -Wnested-externs" + dnl If not cross-compiling with a gcc older than 3.0 + if test "x$cross_compiling" != "xyes" || + test "$compiler_num" -ge "300"; then + tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations" + tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes" + fi + fi + # + dnl Only gcc 2.95 or later + if test "$compiler_num" -ge "295"; then + tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long" + fi + # + dnl Only gcc 2.96 or later + if test "$compiler_num" -ge "296"; then + tmp_CFLAGS="$tmp_CFLAGS -Wfloat-equal" + tmp_CFLAGS="$tmp_CFLAGS -Wno-multichar -Wsign-compare" + dnl -Wundef used only if gcc is 2.96 or later since we get + dnl lots of "`_POSIX_C_SOURCE' is not defined" in system + dnl headers with gcc 2.95.4 on FreeBSD 4.9 + tmp_CFLAGS="$tmp_CFLAGS -Wundef" + fi + # + dnl Only gcc 2.97 or later + if test "$compiler_num" -ge "297"; then + tmp_CFLAGS="$tmp_CFLAGS -Wno-format-nonliteral" + fi + # + dnl Only gcc 3.0 or later + if test "$compiler_num" -ge "300"; then + dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on + dnl on i686-Linux as it gives us heaps with false positives. + dnl Also, on gcc 4.0.X it is totally unbearable and complains all + dnl over making it unusable for generic purposes. Let's not use it. + tmp_CFLAGS="$tmp_CFLAGS" + fi + # + dnl Only gcc 3.3 or later + if test "$compiler_num" -ge "303"; then + tmp_CFLAGS="$tmp_CFLAGS -Wendif-labels -Wstrict-prototypes" + fi + # + dnl Only gcc 3.4 or later + if test "$compiler_num" -ge "304"; then + tmp_CFLAGS="$tmp_CFLAGS -Wdeclaration-after-statement" + fi + # + dnl Only gcc 4.3 or later + if test "$compiler_num" -ge "403"; then + tmp_CFLAGS="$tmp_CFLAGS -Wtype-limits -Wold-style-declaration" + tmp_CFLAGS="$tmp_CFLAGS -Wmissing-parameter-type -Wempty-body" + tmp_CFLAGS="$tmp_CFLAGS -Wclobbered -Wignored-qualifiers" + fi + # + fi + # + dnl Do not issue warnings for code in system include paths. + if test "$compiler_num" -ge "300"; then + tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers" + else + dnl When cross-compiling with a gcc older than 3.0, disable + dnl some warnings triggered on third party system headers. + if test "x$cross_compiling" = "xyes"; then + if test "$compiler_num" -ge "104"; then + dnl gcc 1.4 or later + tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow" + fi + if test "$compiler_num" -ge "207"; then + dnl gcc 2.7 or later + tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-declarations" + tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes" + fi + fi + fi + ;; + # + HP_UX_C) + # + if test "$want_warnings" = "yes"; then + dnl Issue all warnings + tmp_CFLAGS="$tmp_CFLAGS +w1" + fi + ;; + # + IBM_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + INTEL_UNIX_C) + # + if test "$want_warnings" = "yes"; then + if test "$compiler_num" -gt "600"; then + dnl Show errors, warnings, and remarks + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wall -w2" + dnl Perform extra compile-time code checking + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcheck" + dnl Warn on nested comments + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wcomment" + dnl Show warnings relative to deprecated features + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wdeprecated" + dnl Enable warnings for missing prototypes + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wmissing-prototypes" + dnl Enable warnings for 64-bit portability issues + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wp64" + dnl Enable warnings for questionable pointer arithmetic + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wpointer-arith" + dnl Check for function return typw issues + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wreturn-type" + dnl Warn on variable declarations hiding a previous one + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wshadow" + dnl Warn when a variable is used before initialized + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wuninitialized" + dnl Warn if a declared function is not used + tmp_CPPFLAGS="$tmp_CPPFLAGS -Wunused-function" + fi + fi + dnl Disable using EBP register in optimizations + tmp_CFLAGS="$tmp_CFLAGS -fno-omit-frame-pointer" + dnl Disable use of ANSI C aliasing rules in optimizations + tmp_CFLAGS="$tmp_CFLAGS -no-ansi-alias" + dnl Value-safe optimizations on floating-point data + tmp_CFLAGS="$tmp_CFLAGS -fp-model precise" + dnl Only icc 10.0 or later + if test "$compiler_num" -ge "1000"; then + dnl Disable vectorizer diagnostic information + tmp_CFLAGS="$tmp_CFLAGS -vec-report0" + fi + ;; + # + INTEL_WINDOWS_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + LCC) + # + if test "$want_warnings" = "yes"; then + dnl Highest warning level is double -A, next is single -A. + dnl Due to the big number of warnings these trigger on third + dnl party header files it is impractical for us to use any of + dnl them here. If you want them simply define it in CPPFLAGS. + tmp_CFLAGS="$tmp_CFLAGS" + fi + ;; + # + SGI_MIPS_C) + # + if test "$want_warnings" = "yes"; then + dnl Perform stricter semantic and lint-like checks + tmp_CFLAGS="$tmp_CFLAGS -fullwarn" + fi + ;; + # + SGI_MIPSPRO_C) + # + if test "$want_warnings" = "yes"; then + dnl Perform stricter semantic and lint-like checks + tmp_CFLAGS="$tmp_CFLAGS -fullwarn" + dnl Disable some remarks + dnl #1209: controlling expression is constant + tmp_CFLAGS="$tmp_CFLAGS -woff 1209" + fi + ;; + # + SUNPRO_C) + # + if test "$want_warnings" = "yes"; then + dnl Perform stricter semantic and lint-like checks + tmp_CFLAGS="$tmp_CFLAGS -v" + fi + ;; + # + TINY_C) + # + if test "$want_warnings" = "yes"; then + dnl Activate all warnings + tmp_CFLAGS="$tmp_CFLAGS -Wall" + dnl Make string constants be of type const char * + tmp_CFLAGS="$tmp_CFLAGS -Wwrite-strings" + dnl Warn use of unsupported GCC features ignored by TCC + tmp_CFLAGS="$tmp_CFLAGS -Wunsupported" + fi + ;; + # + WATCOM_UNIX_C) + # + if test "$want_warnings" = "yes"; then + dnl Issue all warnings + tmp_CFLAGS="$tmp_CFLAGS -Wall -Wextra" + fi + ;; + # + WATCOM_WINDOWS_C) + # + dnl Placeholder + tmp_CFLAGS="$tmp_CFLAGS" + ;; + # + esac + # + squeeze tmp_CPPFLAGS + squeeze tmp_CFLAGS + # + if test ! -z "$tmp_CFLAGS" || test ! -z "$tmp_CPPFLAGS"; then + AC_MSG_CHECKING([if compiler accepts strict warning options]) + CPPFLAGS="$tmp_save_CPPFLAGS $tmp_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" + squeeze CPPFLAGS + squeeze CFLAGS + CARES_COMPILER_WORKS_IFELSE([ + AC_MSG_RESULT([yes]) + AC_MSG_NOTICE([compiler options added: $tmp_CFLAGS $tmp_CPPFLAGS]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_WARN([compiler options rejected: $tmp_CFLAGS $tmp_CPPFLAGS]) + dnl restore initial settings + CPPFLAGS="$tmp_save_CPPFLAGS" + CFLAGS="$tmp_save_CFLAGS" + ]) + fi + # + fi +]) + + +dnl CARES_SHFUNC_SQUEEZE +dnl ------------------------------------------------- +dnl Declares a shell function squeeze() which removes +dnl redundant whitespace out of a shell variable. + +AC_DEFUN([CARES_SHFUNC_SQUEEZE], [ +squeeze() { + _sqz_result="" + eval _sqz_input=\[$][$]1 + for _sqz_token in $_sqz_input; do + if test -z "$_sqz_result"; then + _sqz_result="$_sqz_token" + else + _sqz_result="$_sqz_result $_sqz_token" + fi + done + eval [$]1=\$_sqz_result + return 0 +} +]) + + +dnl CARES_CHECK_CURLDEBUG +dnl ------------------------------------------------- +dnl Settings which depend on configure's curldebug given +dnl option, and other additional configure pre-requisites. +dnl Using the curl debug memory tracking feature in c-ares +dnl is a hack that actually can only be used/enabled when +dnl c-ares is built directly in curl's CVS tree, as a static +dnl library or as a shared one on those systems on which +dnl shared libraries support undefined symbols, along with +dnl an equally configured libcurl. + +AC_DEFUN([CARES_CHECK_CURLDEBUG], [ + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + cares_builddir=`pwd` + supports_curldebug="unknown" + if test "$want_curldebug" = "yes"; then + if test "x$enable_shared" != "xno" && + test "x$enable_shared" != "xyes"; then + AC_MSG_WARN([unknown enable_shared setting.]) + supports_curldebug="no" + fi + if test "x$enable_static" != "xno" && + test "x$enable_static" != "xyes"; then + AC_MSG_WARN([unknown enable_static setting.]) + supports_curldebug="no" + fi + if test "$supports_curldebug" != "no"; then + if test "$enable_shared" = "yes" && + test "$need_no_undefined" = "yes"; then + supports_curldebug="no" + AC_MSG_WARN([shared library does not support undefined symbols.]) + fi + if test ! -f "$srcdir/../include/curl/curlbuild.h.dist"; then + AC_MSG_WARN([c-ares source not embedded in curl's CVS tree.]) + supports_curldebug="no" + elif test ! -f "$srcdir/../include/curl/Makefile.in"; then + AC_MSG_WARN([curl's buildconf has not been run.]) + supports_curldebug="no" + elif test ! -f "$cares_builddir/../libcurl.pc" || + test ! -f "$cares_builddir/../include/curl/curlbuild.h"; then + AC_MSG_WARN([curl's configure has not been run.]) + supports_curldebug="no" + elif test ! -f "$cares_builddir/../lib/curl_config.h"; then + AC_MSG_WARN([libcurl's curl_config.h is missing.]) + supports_curldebug="no" + elif test ! -f "$cares_builddir/../config.status"; then + AC_MSG_WARN([curl's config.status is missing.]) + supports_curldebug="no" + fi + if test "$supports_curldebug" != "no"; then + grep '^#define USE_ARES' "$cares_builddir/../lib/curl_config.h" >/dev/null + if test "$?" -ne "0"; then + AC_MSG_WARN([libcurl configured without c-ares support.]) + supports_curldebug="no" + fi + fi + if test "$supports_curldebug" != "no"; then + grep 'CPPFLAGS.*CURLDEBUG' "$cares_builddir/../config.status" >/dev/null + if test "$?" -ne "0"; then + AC_MSG_WARN([libcurl configured without curldebug support.]) + supports_curldebug="no" + fi + fi + fi + fi + # + if test "$want_curldebug" = "yes"; then + AC_MSG_CHECKING([if curl debug memory tracking can be enabled]) + test "$supports_curldebug" = "no" || supports_curldebug="yes" + AC_MSG_RESULT([$supports_curldebug]) + if test "$supports_curldebug" = "no"; then + AC_MSG_WARN([cannot enable curl debug memory tracking.]) + want_curldebug="no" + fi + fi + # + if test "$want_curldebug" = "yes"; then + dnl TODO: Verify if the BUILDING_LIBCURL definition is still required. + AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl]) + CPPFLAGS="$CPPFLAGS -DCURLDEBUG" + squeeze CPPFLAGS + fi + # + if test "$want_debug" = "yes"; then + CPPFLAGS="$CPPFLAGS -DDEBUGBUILD" + squeeze CPPFLAGS + fi +]) + + +dnl CARES_CHECK_NO_UNDEFINED +dnl ------------------------------------------------- +dnl Checks if the -no-undefined flag must be used when +dnl building shared libraries. This is required on all +dnl systems on which shared libraries should not have +dnl references to undefined symbols. This check should +dnl not be done before AC-PROG-LIBTOOL. + +AC_DEFUN([CARES_CHECK_NO_UNDEFINED], [ + AC_BEFORE([$0],[CARES_CHECK_CURLDEBUG])dnl + AC_MSG_CHECKING([if shared libraries need -no-undefined]) + need_no_undefined="no" + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc* | *-*-aix*) + need_no_undefined="yes" + ;; + esac + if test "x$allow_undefined" = "xno"; then + need_no_undefined="yes" + elif test "x$allow_undefined_flag" = "xunsupported"; then + need_no_undefined="yes" + fi + AC_MSG_RESULT($need_no_undefined) +]) + + +dnl CARES_CHECK_PROG_CC +dnl ------------------------------------------------- +dnl Check for compiler program, preventing CFLAGS and +dnl CPPFLAGS from being unexpectedly changed. + +AC_DEFUN([CARES_CHECK_PROG_CC], [ + ac_save_CFLAGS="$CFLAGS" + ac_save_CPPFLAGS="$CPPFLAGS" + AC_PROG_CC + CFLAGS="$ac_save_CFLAGS" + CPPFLAGS="$ac_save_CPPFLAGS" +]) + + +dnl CARES_CHECK_COMPILER_HALT_ON_ERROR +dnl ------------------------------------------------- +dnl Verifies if the compiler actually halts after the +dnl compilation phase without generating any object +dnl code file, when the source compiles with errors. + +AC_DEFUN([CARES_CHECK_COMPILER_HALT_ON_ERROR], [ + AC_MSG_CHECKING([if compiler halts on compilation errors]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ + force compilation error + ]]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([compiler does not halt on compilation errors.]) + ],[ + AC_MSG_RESULT([yes]) + ]) +]) + + +dnl CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE +dnl ------------------------------------------------- +dnl Verifies if the compiler actually halts after the +dnl compilation phase without generating any object +dnl code file, when the source code tries to define a +dnl type for a constant array with negative dimension. + +AC_DEFUN([CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE], [ + AC_REQUIRE([CARES_CHECK_COMPILER_HALT_ON_ERROR])dnl + AC_MSG_CHECKING([if compiler halts on negative sized arrays]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + typedef char bad_t[sizeof(char) == sizeof(int) ? -1 : -1 ]; + ]],[[ + bad_t dummy; + ]]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([compiler does not halt on negative sized arrays.]) + ],[ + AC_MSG_RESULT([yes]) + ]) +]) + + +dnl CARES_CHECK_COMPILER_STRUCT_MEMBER_SIZE +dnl ------------------------------------------------- +dnl Verifies if the compiler is capable of handling the +dnl size of a struct member, struct which is a function +dnl result, as a compilation-time condition inside the +dnl type definition of a constant array. + +AC_DEFUN([CARES_CHECK_COMPILER_STRUCT_MEMBER_SIZE], [ + AC_REQUIRE([CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE])dnl + AC_MSG_CHECKING([if compiler struct member size checking works]) + tst_compiler_check_one_works="unknown" + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + struct mystruct { + int mi; + char mc; + struct mystruct *next; + }; + struct mystruct myfunc(); + typedef char good_t1[sizeof(myfunc().mi) == sizeof(int) ? 1 : -1 ]; + typedef char good_t2[sizeof(myfunc().mc) == sizeof(char) ? 1 : -1 ]; + ]],[[ + good_t1 dummy1; + good_t2 dummy2; + ]]) + ],[ + tst_compiler_check_one_works="yes" + ],[ + tst_compiler_check_one_works="no" + sed 's/^/cc-src: /' conftest.$ac_ext >&6 + sed 's/^/cc-err: /' conftest.err >&6 + ]) + tst_compiler_check_two_works="unknown" + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + struct mystruct { + int mi; + char mc; + struct mystruct *next; + }; + struct mystruct myfunc(); + typedef char bad_t1[sizeof(myfunc().mi) != sizeof(int) ? 1 : -1 ]; + typedef char bad_t2[sizeof(myfunc().mc) != sizeof(char) ? 1 : -1 ]; + ]],[[ + bad_t1 dummy1; + bad_t2 dummy2; + ]]) + ],[ + tst_compiler_check_two_works="no" + ],[ + tst_compiler_check_two_works="yes" + ]) + if test "$tst_compiler_check_one_works" = "yes" && + test "$tst_compiler_check_two_works" = "yes"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + AC_MSG_ERROR([compiler fails struct member size checking.]) + fi +]) + + +dnl CARES_CHECK_COMPILER_SYMBOL_HIDING +dnl ------------------------------------------------- +dnl Verify if compiler supports hiding library internal symbols, setting +dnl shell variable supports_symbol_hiding value as appropriate, as well as +dnl variables symbol_hiding_CFLAGS and symbol_hiding_EXTERN when supported. + +AC_DEFUN([CARES_CHECK_COMPILER_SYMBOL_HIDING], [ + AC_REQUIRE([CARES_CHECK_COMPILER])dnl + AC_BEFORE([$0],[CARES_CONFIGURE_SYMBOL_HIDING])dnl + AC_MSG_CHECKING([if compiler supports hiding library internal symbols]) + supports_symbol_hiding="no" + symbol_hiding_CFLAGS="" + symbol_hiding_EXTERN="" + tmp_CFLAGS="" + tmp_EXTERN="" + case "$compiler_id" in + GNU_C) + dnl Only gcc 3.4 or later + if test "$compiler_num" -ge "304"; then + if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then + tmp_EXTERN="__attribute__ ((visibility (\"default\")))" + tmp_CFLAGS="-fvisibility=hidden" + supports_symbol_hiding="yes" + fi + fi + ;; + INTEL_UNIX_C) + dnl Only icc 9.0 or later + if test "$compiler_num" -ge "900"; then + if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then + tmp_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -fvisibility=hidden" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ +# include <stdio.h> + ]],[[ + printf("icc fvisibility bug test"); + ]]) + ],[ + tmp_EXTERN="__attribute__ ((visibility (\"default\")))" + tmp_CFLAGS="-fvisibility=hidden" + supports_symbol_hiding="yes" + ]) + CFLAGS="$tmp_save_CFLAGS" + fi + fi + ;; + SUNPRO_C) + if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then + tmp_EXTERN="__global" + tmp_CFLAGS="-xldscope=hidden" + supports_symbol_hiding="yes" + fi + ;; + esac + if test "$supports_symbol_hiding" = "yes"; then + tmp_save_CFLAGS="$CFLAGS" + CFLAGS="$tmp_save_CFLAGS $tmp_CFLAGS" + squeeze CFLAGS + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $tmp_EXTERN char *dummy(char *buff); + char *dummy(char *buff) + { + if(buff) + return ++buff; + else + return buff; + } + ]],[[ + char b[16]; + char *r = dummy(&b); + if(r) + return (int)*r; + ]]) + ],[ + supports_symbol_hiding="yes" + ],[ + supports_symbol_hiding="no" + echo " " >&6 + sed 's/^/cc-src: /' conftest.$ac_ext >&6 + sed 's/^/cc-err: /' conftest.err >&6 + echo " " >&6 + ]) + CFLAGS="$tmp_save_CFLAGS" + fi + if test "$supports_symbol_hiding" = "yes"; then + AC_MSG_RESULT([yes]) + symbol_hiding_CFLAGS="$tmp_CFLAGS" + symbol_hiding_EXTERN="$tmp_EXTERN" + else + AC_MSG_RESULT([no]) + fi +]) + + +dnl CARES_VAR_MATCH (VARNAME, VALUE) +dnl ------------------------------------------------- +dnl Verifies if shell variable VARNAME contains VALUE. +dnl Contents of variable VARNAME and VALUE are handled +dnl as whitespace separated lists of words. If at least +dnl one word of VALUE is present in VARNAME the match +dnl is considered positive, otherwise false. + +AC_DEFUN([CARES_VAR_MATCH], [ + ac_var_match_word="no" + for word1 in $[$1]; do + for word2 in [$2]; do + if test "$word1" = "$word2"; then + ac_var_match_word="yes" + fi + done + done +]) + + +dnl CARES_VAR_MATCH_IFELSE (VARNAME, VALUE, +dnl [ACTION-IF-MATCH], [ACTION-IF-NOT-MATCH]) +dnl ------------------------------------------------- +dnl This performs a CURL_VAR_MATCH check and executes +dnl first branch if the match is positive, otherwise +dnl the second branch is executed. + +AC_DEFUN([CARES_VAR_MATCH_IFELSE], [ + CARES_VAR_MATCH([$1],[$2]) + if test "$ac_var_match_word" = "yes"; then + ifelse($3,,:,[$3]) + ifelse($4,,,[else + $4]) + fi +]) + + +dnl CARES_VAR_STRIP (VARNAME, VALUE) +dnl ------------------------------------------------- +dnl Contents of variable VARNAME and VALUE are handled +dnl as whitespace separated lists of words. Each word +dnl from VALUE is removed from VARNAME when present. + +AC_DEFUN([CARES_VAR_STRIP], [ + AC_REQUIRE([CARES_SHFUNC_SQUEEZE])dnl + ac_var_stripped="" + for word1 in $[$1]; do + ac_var_strip_word="no" + for word2 in [$2]; do + if test "$word1" = "$word2"; then + ac_var_strip_word="yes" + fi + done + if test "$ac_var_strip_word" = "no"; then + ac_var_stripped="$ac_var_stripped $word1" + fi + done + dnl squeeze whitespace out of result + [$1]="$ac_var_stripped" + squeeze [$1] +]) + diff --git a/m4/cares-confopts.m4 b/m4/cares-confopts.m4 new file mode 100644 index 0000000..3ea9708 --- /dev/null +++ b/m4/cares-confopts.m4 @@ -0,0 +1,320 @@ +#*************************************************************************** +# $Id: cares-confopts.m4,v 1.8 2009-10-31 04:16:40 yangtse Exp $ +# +# Copyright (C) 2008 - 2009 by Daniel Stenberg et al +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose and without fee is hereby granted, provided +# that the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 8 + + +dnl CARES_CHECK_OPTION_CURLDEBUG +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-curldebug or --disable-curldebug, and set +dnl shell variable want_curldebug value as appropriate. + +AC_DEFUN([CARES_CHECK_OPTION_CURLDEBUG], [ + AC_BEFORE([$0],[CARES_CHECK_CURLDEBUG])dnl + AC_MSG_CHECKING([whether to enable curl debug memory tracking]) + OPT_CURLDEBUG_BUILD="default" + AC_ARG_ENABLE(curldebug, +AC_HELP_STRING([--enable-curldebug],[Enable curl debug memory tracking]) +AC_HELP_STRING([--disable-curldebug],[Disable curl debug memory tracking]), + OPT_CURLDEBUG_BUILD=$enableval) + case "$OPT_CURLDEBUG_BUILD" in + no) + dnl --disable-curldebug option used + want_curldebug="no" + ;; + default) + dnl configure option not specified + want_curldebug="no" + ;; + *) + dnl --enable-curldebug option used. + dnl The use of this option value is a request to enable curl's + dnl debug memory tracking for the c-ares library. This is a big + dnl hack that can only be done when a whole bunch of requisites + dnl are simultaneously satisfied. Later on, these requisites are + dnl verified and if they are not fully satisfied the option will + dnl be ignored and act as if --disable-curldebug had been given + dnl setting shell variable want_curldebug to 'no'. + want_curldebug="yes" + ;; + esac + AC_MSG_RESULT([$want_curldebug]) +]) + + +dnl CARES_CHECK_OPTION_DEBUG +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-debug or --disable-debug, and set shell +dnl variable want_debug value as appropriate. + +AC_DEFUN([CARES_CHECK_OPTION_DEBUG], [ + AC_BEFORE([$0],[CARES_CHECK_OPTION_WARNINGS])dnl + AC_BEFORE([$0],[CARES_CHECK_OPTION_CURLDEBUG])dnl + AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl + AC_MSG_CHECKING([whether to enable debug build options]) + OPT_DEBUG_BUILD="default" + AC_ARG_ENABLE(debug, +AC_HELP_STRING([--enable-debug],[Enable debug build options]) +AC_HELP_STRING([--disable-debug],[Disable debug build options]), + OPT_DEBUG_BUILD=$enableval) + case "$OPT_DEBUG_BUILD" in + no) + dnl --disable-debug option used + want_debug="no" + ;; + default) + dnl configure option not specified + want_debug="no" + ;; + *) + dnl --enable-debug option used + want_debug="yes" + ;; + esac + AC_MSG_RESULT([$want_debug]) +]) + + +dnl CARES_CHECK_OPTION_NONBLOCKING +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-nonblocking or --disable-nonblocking, and +dnl set shell variable want_nonblocking as appropriate. + +AC_DEFUN([CARES_CHECK_OPTION_NONBLOCKING], [ + AC_BEFORE([$0],[CARES_CHECK_NONBLOCKING_SOCKET])dnl + AC_MSG_CHECKING([whether to enable non-blocking communications]) + OPT_NONBLOCKING="default" + AC_ARG_ENABLE(nonblocking, +AC_HELP_STRING([--enable-nonblocking],[Enable non-blocking communications]) +AC_HELP_STRING([--disable-nonblocking],[Disable non-blocking communications]), + OPT_NONBLOCKING=$enableval) + case "$OPT_NONBLOCKING" in + no) + dnl --disable-nonblocking option used + want_nonblocking="no" + ;; + default) + dnl configure option not specified + want_nonblocking="yes" + ;; + *) + dnl --enable-nonblocking option used + want_nonblocking="yes" + ;; + esac + AC_MSG_RESULT([$want_nonblocking]) +]) + + +dnl CARES_CHECK_OPTION_OPTIMIZE +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-optimize or --disable-optimize, and set +dnl shell variable want_optimize value as appropriate. + +AC_DEFUN([CARES_CHECK_OPTION_OPTIMIZE], [ + AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl + AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl + AC_MSG_CHECKING([whether to enable compiler optimizer]) + OPT_COMPILER_OPTIMIZE="default" + AC_ARG_ENABLE(optimize, +AC_HELP_STRING([--enable-optimize(=OPT)],[Enable compiler optimizations (default=-O2)]) +AC_HELP_STRING([--disable-optimize],[Disable compiler optimizations]), + OPT_COMPILER_OPTIMIZE=$enableval) + case "$OPT_COMPILER_OPTIMIZE" in + no) + dnl --disable-optimize option used. We will handle this as + dnl a request to disable compiler optimizations if possible. + dnl If the compiler is known CFLAGS and CPPFLAGS will be + dnl overridden, otherwise this can not be honored. + want_optimize="no" + AC_MSG_RESULT([no]) + ;; + default) + dnl configure's optimize option not specified. Initially we will + dnl handle this as a a request contrary to configure's setting + dnl for --enable-debug. IOW, initially, for debug-enabled builds + dnl this will be handled as a request to disable optimizations if + dnl possible, and for debug-disabled builds this will be handled + dnl initially as a request to enable optimizations if possible. + dnl Finally, if the compiler is known and CFLAGS and CPPFLAGS do + dnl not have any optimizer flag the request will be honored, in + dnl any other case the request can not be honored. + dnl IOW, existing optimizer flags defined in CFLAGS or CPPFLAGS + dnl will always take precedence over any initial assumption. + if test "$want_debug" = "yes"; then + want_optimize="assume_no" + AC_MSG_RESULT([not specified (assuming no)]) + else + want_optimize="assume_yes" + AC_MSG_RESULT([not specified (assuming yes)]) + fi + ;; + *) + dnl --enable-optimize option used. We will handle this as + dnl a request to enable compiler optimizations if possible. + dnl If the compiler is known CFLAGS and CPPFLAGS will be + dnl overridden, otherwise this can not be honored. + want_optimize="yes" + AC_MSG_RESULT([yes]) + ;; + esac +]) + + +dnl CARES_CHECK_OPTION_SYMBOL_HIDING +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-symbol-hiding or --disable-symbol-hiding, +dnl setting shell variable want_symbol_hiding value. + +AC_DEFUN([CARES_CHECK_OPTION_SYMBOL_HIDING], [ + AC_BEFORE([$0],[CARES_CHECK_COMPILER_SYMBOL_HIDING])dnl + AC_MSG_CHECKING([whether to enable hiding of library internal symbols]) + OPT_SYMBOL_HIDING="default" + AC_ARG_ENABLE(symbol-hiding, +AC_HELP_STRING([--enable-symbol-hiding],[Enable hiding of library internal symbols]) +AC_HELP_STRING([--disable-symbol-hiding],[Disable hiding of library internal symbols]), + OPT_SYMBOL_HIDING=$enableval) + case "$OPT_SYMBOL_HIDING" in + no) + dnl --disable-symbol-hiding option used. + dnl This is an indication to not attempt hiding of library internal + dnl symbols. Default symbol visibility will be used, which normally + dnl exposes all library internal symbols. + want_symbol_hiding="no" + AC_MSG_RESULT([no]) + ;; + default) + dnl configure's symbol-hiding option not specified. + dnl Handle this as if --enable-symbol-hiding option was given. + want_symbol_hiding="yes" + AC_MSG_RESULT([yes]) + ;; + *) + dnl --enable-symbol-hiding option used. + dnl This is an indication to attempt hiding of library internal + dnl symbols. This is only supported on some compilers/linkers. + want_symbol_hiding="yes" + AC_MSG_RESULT([yes]) + ;; + esac +]) + + +dnl CARES_CHECK_OPTION_WARNINGS +dnl ------------------------------------------------- +dnl Verify if configure has been invoked with option +dnl --enable-warnings or --disable-warnings, and set +dnl shell variable want_warnings as appropriate. + +AC_DEFUN([CARES_CHECK_OPTION_WARNINGS], [ + AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl + AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl + AC_MSG_CHECKING([whether to enable strict compiler warnings]) + OPT_COMPILER_WARNINGS="default" + AC_ARG_ENABLE(warnings, +AC_HELP_STRING([--enable-warnings],[Enable strict compiler warnings]) +AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]), + OPT_COMPILER_WARNINGS=$enableval) + case "$OPT_COMPILER_WARNINGS" in + no) + dnl --disable-warnings option used + want_warnings="no" + ;; + default) + dnl configure option not specified, so + dnl use same setting as --enable-debug + want_warnings="$want_debug" + ;; + *) + dnl --enable-warnings option used + want_warnings="yes" + ;; + esac + AC_MSG_RESULT([$want_warnings]) +]) + + +dnl CARES_CHECK_NONBLOCKING_SOCKET +dnl ------------------------------------------------- +dnl Check for how to set a socket into non-blocking state. + +AC_DEFUN([CARES_CHECK_NONBLOCKING_SOCKET], [ + AC_REQUIRE([CARES_CHECK_OPTION_NONBLOCKING])dnl + AC_REQUIRE([CARES_CHECK_FUNC_FCNTL])dnl + AC_REQUIRE([CARES_CHECK_FUNC_IOCTL])dnl + AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET])dnl + AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL])dnl + AC_REQUIRE([CARES_CHECK_FUNC_SETSOCKOPT])dnl + # + tst_method="unknown" + if test "$want_nonblocking" = "yes"; then + AC_MSG_CHECKING([how to set a socket into non-blocking mode]) + if test "x$ac_cv_func_fcntl_o_nonblock" = "xyes"; then + tst_method="fcntl O_NONBLOCK" + elif test "x$ac_cv_func_ioctl_fionbio" = "xyes"; then + tst_method="ioctl FIONBIO" + elif test "x$ac_cv_func_ioctlsocket_fionbio" = "xyes"; then + tst_method="ioctlsocket FIONBIO" + elif test "x$ac_cv_func_ioctlsocket_camel_fionbio" = "xyes"; then + tst_method="IoctlSocket FIONBIO" + elif test "x$ac_cv_func_setsockopt_so_nonblock" = "xyes"; then + tst_method="setsockopt SO_NONBLOCK" + fi + AC_MSG_RESULT([$tst_method]) + if test "$tst_method" = "unknown"; then + AC_MSG_WARN([cannot determine non-blocking socket method.]) + fi + fi + if test "$tst_method" = "unknown"; then + AC_DEFINE_UNQUOTED(USE_BLOCKING_SOCKETS, 1, + [Define to disable non-blocking sockets.]) + AC_MSG_WARN([non-blocking sockets disabled.]) + fi +]) + + +dnl CARES_CONFIGURE_SYMBOL_HIDING +dnl ------------------------------------------------- +dnl Depending on --enable-symbol-hiding or --disable-symbol-hiding +dnl configure option, and compiler capability to actually honor such +dnl option, this will modify compiler flags as appropriate and also +dnl provide needed definitions for configuration file. +dnl This macro should not be used until all compilation tests have +dnl been done to prevent interferences on other tests. + +AC_DEFUN([CARES_CONFIGURE_SYMBOL_HIDING], [ + AC_MSG_CHECKING([whether hiding of library internal symbols will actually happen]) + if test x"$ac_cv_native_windows" != "xyes" && + test "$want_symbol_hiding" = "yes" && + test "$supports_symbol_hiding" = "yes"; then + CFLAGS="$CFLAGS $symbol_hiding_CFLAGS" + AC_DEFINE_UNQUOTED(CARES_SYMBOL_HIDING, 1, + [Define to 1 to enable hiding of library internal symbols.]) + AC_DEFINE_UNQUOTED(CARES_SYMBOL_SCOPE_EXTERN, $symbol_hiding_EXTERN, + [Definition to make a library symbol externally visible.]) + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi +]) + diff --git a/m4/cares-functions.m4 b/m4/cares-functions.m4 new file mode 100644 index 0000000..5d052d0 --- /dev/null +++ b/m4/cares-functions.m4 @@ -0,0 +1,3235 @@ +#*************************************************************************** +# $Id: cares-functions.m4,v 1.39 2009-11-16 01:56:16 yangtse Exp $ +# +# Copyright (C) 2008 - 2009 by Daniel Stenberg et al +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose and without fee is hereby granted, provided +# that the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 39 + + +dnl CARES_INCLUDES_ARPA_INET +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when arpa/inet.h is to be included. + +AC_DEFUN([CARES_INCLUDES_ARPA_INET], [ +cares_includes_arpa_inet="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h sys/socket.h netinet/in.h arpa/inet.h, + [], [], [$cares_includes_arpa_inet]) +]) + + +dnl CARES_INCLUDES_FCNTL +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when fcntl.h is to be included. + +AC_DEFUN([CARES_INCLUDES_FCNTL], [ +cares_includes_fcntl="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_FCNTL_H +# include <fcntl.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h unistd.h fcntl.h, + [], [], [$cares_includes_fcntl]) +]) + + +dnl CARES_INCLUDES_NETDB +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when netdb.h is to be included. + +AC_DEFUN([CARES_INCLUDES_NETDB], [ +cares_includes_netdb="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h netdb.h, + [], [], [$cares_includes_netdb]) +]) + + +dnl CARES_INCLUDES_SOCKET +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when socket.h is to be included. + +AC_DEFUN([CARES_INCLUDES_SOCKET], [ +cares_includes_socket="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_SOCKET_H +# include <socket.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h socket.h, + [], [], [$cares_includes_socket]) +]) + + +dnl CARES_INCLUDES_STDLIB +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when stdlib.h is to be included. + +AC_DEFUN([CARES_INCLUDES_STDLIB], [ +cares_includes_stdlib="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_STDLIB_H +# include <stdlib.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h stdlib.h, + [], [], [$cares_includes_stdlib]) +]) + + +dnl CARES_INCLUDES_STRING +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when string(s).h is to be included. + +AC_DEFUN([CARES_INCLUDES_STRING], [ +cares_includes_string="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_STRING_H +# include <string.h> +#endif +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h string.h strings.h, + [], [], [$cares_includes_string]) +]) + + +dnl CARES_INCLUDES_STROPTS +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when stropts.h is to be included. + +AC_DEFUN([CARES_INCLUDES_STROPTS], [ +cares_includes_stropts="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_SYS_IOCTL_H +# include <sys/ioctl.h> +#endif +#ifdef HAVE_STROPTS_H +# include <stropts.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h unistd.h sys/socket.h sys/ioctl.h stropts.h, + [], [], [$cares_includes_stropts]) +]) + + +dnl CARES_INCLUDES_SYS_SOCKET +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when sys/socket.h is to be included. + +AC_DEFUN([CARES_INCLUDES_SYS_SOCKET], [ +cares_includes_sys_socket="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h sys/socket.h, + [], [], [$cares_includes_sys_socket]) +]) + + +dnl CARES_INCLUDES_SYS_TYPES +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when sys/types.h is to be included. + +AC_DEFUN([CARES_INCLUDES_SYS_TYPES], [ +cares_includes_sys_types="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h, + [], [], [$cares_includes_sys_types]) +]) + + +dnl CARES_INCLUDES_SYS_UIO +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when sys/uio.h is to be included. + +AC_DEFUN([CARES_INCLUDES_SYS_UIO], [ +cares_includes_sys_uio="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_SYS_UIO_H +# include <sys/uio.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h sys/uio.h, + [], [], [$cares_includes_sys_uio]) +]) + + +dnl CARES_INCLUDES_UNISTD +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when unistd.h is to be included. + +AC_DEFUN([CARES_INCLUDES_UNISTD], [ +cares_includes_unistd="\ +/* includes start */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +/* includes end */" + AC_CHECK_HEADERS( + sys/types.h unistd.h, + [], [], [$cares_includes_unistd]) +]) + + +dnl CARES_INCLUDES_WINSOCK2 +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when winsock(2).h is to be included. + +AC_DEFUN([CARES_INCLUDES_WINSOCK2], [ +cares_includes_winsock2="\ +/* includes start */ +#ifdef HAVE_WINDOWS_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# ifdef HAVE_WINSOCK2_H +# include <winsock2.h> +# else +# ifdef HAVE_WINSOCK_H +# include <winsock.h> +# endif +# endif +#endif +/* includes end */" + CURL_CHECK_HEADER_WINDOWS + CURL_CHECK_HEADER_WINSOCK + CURL_CHECK_HEADER_WINSOCK2 +]) + + +dnl CARES_INCLUDES_WS2TCPIP +dnl ------------------------------------------------- +dnl Set up variable with list of headers that must be +dnl included when ws2tcpip.h is to be included. + +AC_DEFUN([CARES_INCLUDES_WS2TCPIP], [ +cares_includes_ws2tcpip="\ +/* includes start */ +#ifdef HAVE_WINDOWS_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# ifdef HAVE_WINSOCK2_H +# include <winsock2.h> +# ifdef HAVE_WS2TCPIP_H +# include <ws2tcpip.h> +# endif +# endif +#endif +/* includes end */" + CURL_CHECK_HEADER_WINDOWS + CURL_CHECK_HEADER_WINSOCK2 + CURL_CHECK_HEADER_WS2TCPIP +]) + + +dnl CARES_PREPROCESS_CALLCONV +dnl ------------------------------------------------- +dnl Set up variable with a preprocessor block which +dnl defines function calling convention. + +AC_DEFUN([CARES_PREPROCESS_CALLCONV], [ +cares_preprocess_callconv="\ +/* preprocess start */ +#ifdef HAVE_WINDOWS_H +# define FUNCALLCONV __stdcall +#else +# define FUNCALLCONV +#endif +/* preprocess end */" +]) + + +dnl CARES_CHECK_FUNC_CLOSESOCKET +dnl ------------------------------------------------- +dnl Verify if closesocket is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_closesocket, then +dnl HAVE_CLOSESOCKET will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_CLOSESOCKET], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_SOCKET])dnl + # + tst_links_closesocket="unknown" + tst_proto_closesocket="unknown" + tst_compi_closesocket="unknown" + tst_allow_closesocket="unknown" + # + AC_MSG_CHECKING([if closesocket can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_socket + ]],[[ + if(0 != closesocket(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_closesocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_closesocket="no" + ]) + # + if test "$tst_links_closesocket" = "yes"; then + AC_MSG_CHECKING([if closesocket is prototyped]) + AC_EGREP_CPP([closesocket],[ + $cares_includes_winsock2 + $cares_includes_socket + ],[ + AC_MSG_RESULT([yes]) + tst_proto_closesocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_closesocket="no" + ]) + fi + # + if test "$tst_proto_closesocket" = "yes"; then + AC_MSG_CHECKING([if closesocket is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_socket + ]],[[ + if(0 != closesocket(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_closesocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_closesocket="no" + ]) + fi + # + if test "$tst_compi_closesocket" = "yes"; then + AC_MSG_CHECKING([if closesocket usage allowed]) + if test "x$cares_disallow_closesocket" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_closesocket="yes" + else + AC_MSG_RESULT([no]) + tst_allow_closesocket="no" + fi + fi + # + AC_MSG_CHECKING([if closesocket might be used]) + if test "$tst_links_closesocket" = "yes" && + test "$tst_proto_closesocket" = "yes" && + test "$tst_compi_closesocket" = "yes" && + test "$tst_allow_closesocket" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_CLOSESOCKET, 1, + [Define to 1 if you have the closesocket function.]) + ac_cv_func_closesocket="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_closesocket="no" + fi +]) + + +dnl CARES_CHECK_FUNC_CLOSESOCKET_CAMEL +dnl ------------------------------------------------- +dnl Verify if CloseSocket is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_closesocket_camel, +dnl then HAVE_CLOSESOCKET_CAMEL will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_CLOSESOCKET_CAMEL], [ + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + # + tst_links_closesocket_camel="unknown" + tst_proto_closesocket_camel="unknown" + tst_compi_closesocket_camel="unknown" + tst_allow_closesocket_camel="unknown" + # + AC_MSG_CHECKING([if CloseSocket can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_socket + ]],[[ + if(0 != CloseSocket(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_closesocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_closesocket_camel="no" + ]) + # + if test "$tst_links_closesocket_camel" = "yes"; then + AC_MSG_CHECKING([if CloseSocket is prototyped]) + AC_EGREP_CPP([CloseSocket],[ + $cares_includes_sys_socket + ],[ + AC_MSG_RESULT([yes]) + tst_proto_closesocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_closesocket_camel="no" + ]) + fi + # + if test "$tst_proto_closesocket_camel" = "yes"; then + AC_MSG_CHECKING([if CloseSocket is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_socket + ]],[[ + if(0 != CloseSocket(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_closesocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_closesocket_camel="no" + ]) + fi + # + if test "$tst_compi_closesocket_camel" = "yes"; then + AC_MSG_CHECKING([if CloseSocket usage allowed]) + if test "x$cares_disallow_closesocket_camel" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_closesocket_camel="yes" + else + AC_MSG_RESULT([no]) + tst_allow_closesocket_camel="no" + fi + fi + # + AC_MSG_CHECKING([if CloseSocket might be used]) + if test "$tst_links_closesocket_camel" = "yes" && + test "$tst_proto_closesocket_camel" = "yes" && + test "$tst_compi_closesocket_camel" = "yes" && + test "$tst_allow_closesocket_camel" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_CLOSESOCKET_CAMEL, 1, + [Define to 1 if you have the CloseSocket camel case function.]) + ac_cv_func_closesocket_camel="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_closesocket_camel="no" + fi +]) + + +dnl CARES_CHECK_FUNC_CONNECT +dnl ------------------------------------------------- +dnl Verify if connect is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_connect, then +dnl HAVE_CONNECT will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_CONNECT], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_INCLUDES_SOCKET])dnl + # + tst_links_connect="unknown" + tst_proto_connect="unknown" + tst_compi_connect="unknown" + tst_allow_connect="unknown" + # + AC_MSG_CHECKING([if connect can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ]],[[ + if(0 != connect(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_connect="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_connect="no" + ]) + # + if test "$tst_links_connect" = "yes"; then + AC_MSG_CHECKING([if connect is prototyped]) + AC_EGREP_CPP([connect],[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ],[ + AC_MSG_RESULT([yes]) + tst_proto_connect="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_connect="no" + ]) + fi + # + if test "$tst_proto_connect" = "yes"; then + AC_MSG_CHECKING([if connect is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ]],[[ + if(0 != connect(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_connect="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_connect="no" + ]) + fi + # + if test "$tst_compi_connect" = "yes"; then + AC_MSG_CHECKING([if connect usage allowed]) + if test "x$cares_disallow_connect" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_connect="yes" + else + AC_MSG_RESULT([no]) + tst_allow_connect="no" + fi + fi + # + AC_MSG_CHECKING([if connect might be used]) + if test "$tst_links_connect" = "yes" && + test "$tst_proto_connect" = "yes" && + test "$tst_compi_connect" = "yes" && + test "$tst_allow_connect" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_CONNECT, 1, + [Define to 1 if you have the connect function.]) + ac_cv_func_connect="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_connect="no" + fi +]) + + +dnl CARES_CHECK_FUNC_FCNTL +dnl ------------------------------------------------- +dnl Verify if fcntl is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_fcntl, then +dnl HAVE_FCNTL will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_FCNTL], [ + AC_REQUIRE([CARES_INCLUDES_FCNTL])dnl + # + tst_links_fcntl="unknown" + tst_proto_fcntl="unknown" + tst_compi_fcntl="unknown" + tst_allow_fcntl="unknown" + # + AC_MSG_CHECKING([if fcntl can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([fcntl]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_fcntl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_fcntl="no" + ]) + # + if test "$tst_links_fcntl" = "yes"; then + AC_MSG_CHECKING([if fcntl is prototyped]) + AC_EGREP_CPP([fcntl],[ + $cares_includes_fcntl + ],[ + AC_MSG_RESULT([yes]) + tst_proto_fcntl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_fcntl="no" + ]) + fi + # + if test "$tst_proto_fcntl" = "yes"; then + AC_MSG_CHECKING([if fcntl is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_fcntl + ]],[[ + if(0 != fcntl(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_fcntl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_fcntl="no" + ]) + fi + # + if test "$tst_compi_fcntl" = "yes"; then + AC_MSG_CHECKING([if fcntl usage allowed]) + if test "x$cares_disallow_fcntl" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_fcntl="yes" + else + AC_MSG_RESULT([no]) + tst_allow_fcntl="no" + fi + fi + # + AC_MSG_CHECKING([if fcntl might be used]) + if test "$tst_links_fcntl" = "yes" && + test "$tst_proto_fcntl" = "yes" && + test "$tst_compi_fcntl" = "yes" && + test "$tst_allow_fcntl" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_FCNTL, 1, + [Define to 1 if you have the fcntl function.]) + ac_cv_func_fcntl="yes" + CARES_CHECK_FUNC_FCNTL_O_NONBLOCK + else + AC_MSG_RESULT([no]) + ac_cv_func_fcntl="no" + fi +]) + + +dnl CARES_CHECK_FUNC_FCNTL_O_NONBLOCK +dnl ------------------------------------------------- +dnl Verify if fcntl with status flag O_NONBLOCK is +dnl available, can be compiled, and seems to work. If +dnl all of these are true, then HAVE_FCNTL_O_NONBLOCK +dnl will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_FCNTL_O_NONBLOCK], [ + # + tst_compi_fcntl_o_nonblock="unknown" + tst_allow_fcntl_o_nonblock="unknown" + # + case $host_os in + sunos4* | aix3* | beos*) + dnl O_NONBLOCK does not work on these platforms + cares_disallow_fcntl_o_nonblock="yes" + ;; + esac + # + if test "$ac_cv_func_fcntl" = "yes"; then + AC_MSG_CHECKING([if fcntl O_NONBLOCK is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_fcntl + ]],[[ + int flags = 0; + if(0 != fcntl(0, F_SETFL, flags | O_NONBLOCK)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_fcntl_o_nonblock="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_fcntl_o_nonblock="no" + ]) + fi + # + if test "$tst_compi_fcntl_o_nonblock" = "yes"; then + AC_MSG_CHECKING([if fcntl O_NONBLOCK usage allowed]) + if test "x$cares_disallow_fcntl_o_nonblock" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_fcntl_o_nonblock="yes" + else + AC_MSG_RESULT([no]) + tst_allow_fcntl_o_nonblock="no" + fi + fi + # + AC_MSG_CHECKING([if fcntl O_NONBLOCK might be used]) + if test "$tst_compi_fcntl_o_nonblock" = "yes" && + test "$tst_allow_fcntl_o_nonblock" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_FCNTL_O_NONBLOCK, 1, + [Define to 1 if you have a working fcntl O_NONBLOCK function.]) + ac_cv_func_fcntl_o_nonblock="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_fcntl_o_nonblock="no" + fi +]) + + +dnl CARES_CHECK_FUNC_FREEADDRINFO +dnl ------------------------------------------------- +dnl Verify if freeaddrinfo is available, prototyped, +dnl and can be compiled. If all of these are true, +dnl and usage has not been previously disallowed with +dnl shell variable cares_disallow_freeaddrinfo, then +dnl HAVE_FREEADDRINFO will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_FREEADDRINFO], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_freeaddrinfo="unknown" + tst_proto_freeaddrinfo="unknown" + tst_compi_freeaddrinfo="unknown" + tst_allow_freeaddrinfo="unknown" + # + AC_MSG_CHECKING([if freeaddrinfo can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + freeaddrinfo(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_freeaddrinfo="no" + ]) + # + if test "$tst_links_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo is prototyped]) + AC_EGREP_CPP([freeaddrinfo],[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_freeaddrinfo="no" + ]) + fi + # + if test "$tst_proto_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + freeaddrinfo(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_freeaddrinfo="no" + ]) + fi + # + if test "$tst_compi_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo usage allowed]) + if test "x$cares_disallow_freeaddrinfo" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_freeaddrinfo="yes" + else + AC_MSG_RESULT([no]) + tst_allow_freeaddrinfo="no" + fi + fi + # + AC_MSG_CHECKING([if freeaddrinfo might be used]) + if test "$tst_links_freeaddrinfo" = "yes" && + test "$tst_proto_freeaddrinfo" = "yes" && + test "$tst_compi_freeaddrinfo" = "yes" && + test "$tst_allow_freeaddrinfo" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_FREEADDRINFO, 1, + [Define to 1 if you have the freeaddrinfo function.]) + ac_cv_func_freeaddrinfo="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_freeaddrinfo="no" + fi +]) + + +dnl CARES_CHECK_FUNC_GETADDRINFO +dnl ------------------------------------------------- +dnl Verify if getaddrinfo is available, prototyped, can +dnl be compiled and seems to work. If all of these are +dnl true, and usage has not been previously disallowed +dnl with shell variable cares_disallow_getaddrinfo, then +dnl HAVE_GETADDRINFO will be defined. Additionally when +dnl HAVE_GETADDRINFO gets defined this will also attempt +dnl to find out if getaddrinfo happens to be threadsafe, +dnl defining HAVE_GETADDRINFO_THREADSAFE when true. + +AC_DEFUN([CARES_CHECK_FUNC_GETADDRINFO], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_STDLIB])dnl + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_getaddrinfo="unknown" + tst_proto_getaddrinfo="unknown" + tst_compi_getaddrinfo="unknown" + tst_works_getaddrinfo="unknown" + tst_allow_getaddrinfo="unknown" + tst_tsafe_getaddrinfo="unknown" + # + AC_MSG_CHECKING([if getaddrinfo can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + if(0 != getaddrinfo(0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_getaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_getaddrinfo="no" + ]) + # + if test "$tst_links_getaddrinfo" = "yes"; then + AC_MSG_CHECKING([if getaddrinfo is prototyped]) + AC_EGREP_CPP([getaddrinfo],[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_getaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_getaddrinfo="no" + ]) + fi + # + if test "$tst_proto_getaddrinfo" = "yes"; then + AC_MSG_CHECKING([if getaddrinfo is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + if(0 != getaddrinfo(0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_getaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_getaddrinfo="no" + ]) + fi + # + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$tst_compi_getaddrinfo" = "yes"; then + AC_MSG_CHECKING([if getaddrinfo seems to work]) + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_stdlib + $cares_includes_string + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + struct addrinfo hints; + struct addrinfo *ai = 0; + int error; + + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_NUMERICHOST; + hints.ai_family = AF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + error = getaddrinfo("127.0.0.1", 0, &hints, &ai); + if(error || !ai) + exit(1); /* fail */ + else + exit(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_works_getaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_works_getaddrinfo="no" + ]) + fi + # + if test "$tst_compi_getaddrinfo" = "yes" && + test "$tst_works_getaddrinfo" != "no"; then + AC_MSG_CHECKING([if getaddrinfo usage allowed]) + if test "x$cares_disallow_getaddrinfo" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_getaddrinfo="yes" + else + AC_MSG_RESULT([no]) + tst_allow_getaddrinfo="no" + fi + fi + # + AC_MSG_CHECKING([if getaddrinfo might be used]) + if test "$tst_links_getaddrinfo" = "yes" && + test "$tst_proto_getaddrinfo" = "yes" && + test "$tst_compi_getaddrinfo" = "yes" && + test "$tst_allow_getaddrinfo" = "yes" && + test "$tst_works_getaddrinfo" != "no"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_GETADDRINFO, 1, + [Define to 1 if you have a working getaddrinfo function.]) + ac_cv_func_getaddrinfo="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_getaddrinfo="no" + ac_cv_func_getaddrinfo_threadsafe="no" + fi + # + if test "$ac_cv_func_getaddrinfo" = "yes"; then + AC_MSG_CHECKING([if getaddrinfo is threadsafe]) + case $host_os in + aix[[1234]].* | aix5.[[01]].*) + dnl aix 5.1 and older + tst_tsafe_getaddrinfo="no" + ;; + aix*) + dnl aix 5.2 and newer + tst_tsafe_getaddrinfo="yes" + ;; + darwin[[12345]].*) + dnl darwin 5.0 and mac os x 10.1.X and older + tst_tsafe_getaddrinfo="no" + ;; + darwin*) + dnl darwin 6.0 and mac os x 10.2.X and newer + tst_tsafe_getaddrinfo="yes" + ;; + freebsd[[1234]].* | freebsd5.[[1234]]*) + dnl freebsd 5.4 and older + tst_tsafe_getaddrinfo="no" + ;; + freebsd*) + dnl freebsd 5.5 and newer + tst_tsafe_getaddrinfo="yes" + ;; + hpux[[123456789]].* | hpux10.* | hpux11.0* | hpux11.10*) + dnl hpux 11.10 and older + tst_tsafe_getaddrinfo="no" + ;; + hpux*) + dnl hpux 11.11 and newer + tst_tsafe_getaddrinfo="yes" + ;; + netbsd[[123]].*) + dnl netbsd 3.X and older + tst_tsafe_getaddrinfo="no" + ;; + netbsd*) + dnl netbsd 4.X and newer + tst_tsafe_getaddrinfo="yes" + ;; + *bsd*) + dnl All other bsd's + tst_tsafe_getaddrinfo="no" + ;; + solaris2*) + dnl solaris which have it + tst_tsafe_getaddrinfo="yes" + ;; + esac + if test "$tst_tsafe_getaddrinfo" = "unknown"; then + CURL_CHECK_DEF_CC([h_errno], [ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ], [silent]) + if test "$curl_cv_have_def_h_errno" = "no"; then + tst_tsafe_getaddrinfo="no" + fi + fi + if test "$tst_tsafe_getaddrinfo" = "unknown"; then + tst_tsafe_getaddrinfo="yes" + fi + AC_MSG_RESULT([$tst_tsafe_getaddrinfo]) + if test "$tst_tsafe_getaddrinfo" = "yes"; then + AC_DEFINE_UNQUOTED(HAVE_GETADDRINFO_THREADSAFE, 1, + [Define to 1 if the getaddrinfo function is threadsafe.]) + ac_cv_func_getaddrinfo_threadsafe="yes" + else + ac_cv_func_getaddrinfo_threadsafe="no" + fi + fi +]) + + +dnl CARES_CHECK_FUNC_GETHOSTBYADDR +dnl ------------------------------------------------- +dnl Verify if gethostbyaddr is available, prototyped, +dnl and can be compiled. If all of these are true, +dnl and usage has not been previously disallowed with +dnl shell variable cares_disallow_gethostbyaddr, then +dnl HAVE_GETHOSTBYADDR will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_GETHOSTBYADDR], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_gethostbyaddr="unknown" + tst_proto_gethostbyaddr="unknown" + tst_compi_gethostbyaddr="unknown" + tst_allow_gethostbyaddr="unknown" + # + AC_MSG_CHECKING([if gethostbyaddr can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_netdb + ]],[[ + if(0 != gethostbyaddr(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_gethostbyaddr="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_gethostbyaddr="no" + ]) + # + if test "$tst_links_gethostbyaddr" = "yes"; then + AC_MSG_CHECKING([if gethostbyaddr is prototyped]) + AC_EGREP_CPP([gethostbyaddr],[ + $cares_includes_winsock2 + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_gethostbyaddr="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_gethostbyaddr="no" + ]) + fi + # + if test "$tst_proto_gethostbyaddr" = "yes"; then + AC_MSG_CHECKING([if gethostbyaddr is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_netdb + ]],[[ + if(0 != gethostbyaddr(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_gethostbyaddr="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_gethostbyaddr="no" + ]) + fi + # + if test "$tst_compi_gethostbyaddr" = "yes"; then + AC_MSG_CHECKING([if gethostbyaddr usage allowed]) + if test "x$cares_disallow_gethostbyaddr" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_gethostbyaddr="yes" + else + AC_MSG_RESULT([no]) + tst_allow_gethostbyaddr="no" + fi + fi + # + AC_MSG_CHECKING([if gethostbyaddr might be used]) + if test "$tst_links_gethostbyaddr" = "yes" && + test "$tst_proto_gethostbyaddr" = "yes" && + test "$tst_compi_gethostbyaddr" = "yes" && + test "$tst_allow_gethostbyaddr" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_GETHOSTBYADDR, 1, + [Define to 1 if you have the gethostbyaddr function.]) + ac_cv_func_gethostbyaddr="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_gethostbyaddr="no" + fi +]) + + +dnl CARES_CHECK_FUNC_GETHOSTBYNAME +dnl ------------------------------------------------- +dnl Verify if gethostbyname is available, prototyped, +dnl and can be compiled. If all of these are true, +dnl and usage has not been previously disallowed with +dnl shell variable cares_disallow_gethostbyname, then +dnl HAVE_GETHOSTBYNAME will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_GETHOSTBYNAME], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_gethostbyname="unknown" + tst_proto_gethostbyname="unknown" + tst_compi_gethostbyname="unknown" + tst_allow_gethostbyname="unknown" + # + AC_MSG_CHECKING([if gethostbyname can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_netdb + ]],[[ + if(0 != gethostbyname(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_gethostbyname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_gethostbyname="no" + ]) + # + if test "$tst_links_gethostbyname" = "yes"; then + AC_MSG_CHECKING([if gethostbyname is prototyped]) + AC_EGREP_CPP([gethostbyname],[ + $cares_includes_winsock2 + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_gethostbyname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_gethostbyname="no" + ]) + fi + # + if test "$tst_proto_gethostbyname" = "yes"; then + AC_MSG_CHECKING([if gethostbyname is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_netdb + ]],[[ + if(0 != gethostbyname(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_gethostbyname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_gethostbyname="no" + ]) + fi + # + if test "$tst_compi_gethostbyname" = "yes"; then + AC_MSG_CHECKING([if gethostbyname usage allowed]) + if test "x$cares_disallow_gethostbyname" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_gethostbyname="yes" + else + AC_MSG_RESULT([no]) + tst_allow_gethostbyname="no" + fi + fi + # + AC_MSG_CHECKING([if gethostbyname might be used]) + if test "$tst_links_gethostbyname" = "yes" && + test "$tst_proto_gethostbyname" = "yes" && + test "$tst_compi_gethostbyname" = "yes" && + test "$tst_allow_gethostbyname" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_GETHOSTBYNAME, 1, + [Define to 1 if you have the gethostbyname function.]) + ac_cv_func_gethostbyname="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_gethostbyname="no" + fi +]) + + +dnl CARES_CHECK_FUNC_GETHOSTNAME +dnl ------------------------------------------------- +dnl Verify if gethostname is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_gethostname, then +dnl HAVE_GETHOSTNAME will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_GETHOSTNAME], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_UNISTD])dnl + # + tst_links_gethostname="unknown" + tst_proto_gethostname="unknown" + tst_compi_gethostname="unknown" + tst_allow_gethostname="unknown" + # + AC_MSG_CHECKING([if gethostname can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_unistd + ]],[[ + if(0 != gethostname(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_gethostname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_gethostname="no" + ]) + # + if test "$tst_links_gethostname" = "yes"; then + AC_MSG_CHECKING([if gethostname is prototyped]) + AC_EGREP_CPP([gethostname],[ + $cares_includes_winsock2 + $cares_includes_unistd + ],[ + AC_MSG_RESULT([yes]) + tst_proto_gethostname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_gethostname="no" + ]) + fi + # + if test "$tst_proto_gethostname" = "yes"; then + AC_MSG_CHECKING([if gethostname is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_unistd + ]],[[ + if(0 != gethostname(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_gethostname="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_gethostname="no" + ]) + fi + # + if test "$tst_compi_gethostname" = "yes"; then + AC_MSG_CHECKING([if gethostname usage allowed]) + if test "x$cares_disallow_gethostname" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_gethostname="yes" + else + AC_MSG_RESULT([no]) + tst_allow_gethostname="no" + fi + fi + # + AC_MSG_CHECKING([if gethostname might be used]) + if test "$tst_links_gethostname" = "yes" && + test "$tst_proto_gethostname" = "yes" && + test "$tst_compi_gethostname" = "yes" && + test "$tst_allow_gethostname" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_GETHOSTNAME, 1, + [Define to 1 if you have the gethostname function.]) + ac_cv_func_gethostname="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_gethostname="no" + fi +]) + + +dnl CARES_CHECK_FUNC_GETSERVBYPORT_R +dnl ------------------------------------------------- +dnl Verify if getservbyport_r is available, prototyped, +dnl and can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_getservbyport_r, then +dnl HAVE_GETSERVBYPORT_R will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_GETSERVBYPORT_R], [ + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_getservbyport_r="unknown" + tst_proto_getservbyport_r="unknown" + tst_compi_getservbyport_r="unknown" + tst_allow_getservbyport_r="unknown" + tst_nargs_getservbyport_r="unknown" + # + AC_MSG_CHECKING([if getservbyport_r can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([getservbyport_r]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_getservbyport_r="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_getservbyport_r="no" + ]) + # + if test "$tst_links_getservbyport_r" = "yes"; then + AC_MSG_CHECKING([if getservbyport_r is prototyped]) + AC_EGREP_CPP([getservbyport_r],[ + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_getservbyport_r="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_getservbyport_r="no" + ]) + fi + # + if test "$tst_proto_getservbyport_r" = "yes"; then + if test "$tst_nargs_getservbyport_r" = "unknown"; then + AC_MSG_CHECKING([if getservbyport_r takes 4 args.]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_netdb + ]],[[ + if(0 != getservbyport_r(0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_getservbyport_r="yes" + tst_nargs_getservbyport_r="4" + ],[ + AC_MSG_RESULT([no]) + tst_compi_getservbyport_r="no" + ]) + fi + if test "$tst_nargs_getservbyport_r" = "unknown"; then + AC_MSG_CHECKING([if getservbyport_r takes 5 args.]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_netdb + ]],[[ + if(0 != getservbyport_r(0, 0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_getservbyport_r="yes" + tst_nargs_getservbyport_r="5" + ],[ + AC_MSG_RESULT([no]) + tst_compi_getservbyport_r="no" + ]) + fi + if test "$tst_nargs_getservbyport_r" = "unknown"; then + AC_MSG_CHECKING([if getservbyport_r takes 6 args.]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_netdb + ]],[[ + if(0 != getservbyport_r(0, 0, 0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_getservbyport_r="yes" + tst_nargs_getservbyport_r="6" + ],[ + AC_MSG_RESULT([no]) + tst_compi_getservbyport_r="no" + ]) + fi + AC_MSG_CHECKING([if getservbyport_r is compilable]) + if test "$tst_compi_getservbyport_r" = "yes"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + fi + # + if test "$tst_compi_getservbyport_r" = "yes"; then + AC_MSG_CHECKING([if getservbyport_r usage allowed]) + if test "x$cares_disallow_getservbyport_r" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_getservbyport_r="yes" + else + AC_MSG_RESULT([no]) + tst_allow_getservbyport_r="no" + fi + fi + # + AC_MSG_CHECKING([if getservbyport_r might be used]) + if test "$tst_links_getservbyport_r" = "yes" && + test "$tst_proto_getservbyport_r" = "yes" && + test "$tst_compi_getservbyport_r" = "yes" && + test "$tst_allow_getservbyport_r" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_GETSERVBYPORT_R, 1, + [Define to 1 if you have the getservbyport_r function.]) + AC_DEFINE_UNQUOTED(GETSERVBYPORT_R_ARGS, $tst_nargs_getservbyport_r, + [Specifies the number of arguments to getservbyport_r]) + if test "$tst_nargs_getservbyport_r" -eq "4"; then + AC_DEFINE(GETSERVBYPORT_R_BUFSIZE, sizeof(struct servent_data), + [Specifies the size of the buffer to pass to getservbyport_r]) + else + AC_DEFINE(GETSERVBYPORT_R_BUFSIZE, 4096, + [Specifies the size of the buffer to pass to getservbyport_r]) + fi + ac_cv_func_getservbyport_r="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_getservbyport_r="no" + fi +]) + + +dnl CARES_CHECK_FUNC_INET_NTOP +dnl ------------------------------------------------- +dnl Verify if inet_ntop is available, prototyped, can +dnl be compiled and seems to work. If all of these are +dnl true, and usage has not been previously disallowed +dnl with shell variable cares_disallow_inet_ntop, then +dnl HAVE_INET_NTOP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_INET_NTOP], [ + AC_REQUIRE([CARES_INCLUDES_STDLIB])dnl + AC_REQUIRE([CARES_INCLUDES_ARPA_INET])dnl + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_inet_ntop="unknown" + tst_proto_inet_ntop="unknown" + tst_compi_inet_ntop="unknown" + tst_works_inet_ntop="unknown" + tst_allow_inet_ntop="unknown" + # + AC_MSG_CHECKING([if inet_ntop can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([inet_ntop]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_inet_ntop="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_inet_ntop="no" + ]) + # + if test "$tst_links_inet_ntop" = "yes"; then + AC_MSG_CHECKING([if inet_ntop is prototyped]) + AC_EGREP_CPP([inet_ntop],[ + $cares_includes_arpa_inet + ],[ + AC_MSG_RESULT([yes]) + tst_proto_inet_ntop="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_inet_ntop="no" + ]) + fi + # + if test "$tst_proto_inet_ntop" = "yes"; then + AC_MSG_CHECKING([if inet_ntop is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_arpa_inet + ]],[[ + if(0 != inet_ntop(0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_inet_ntop="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_inet_ntop="no" + ]) + fi + # + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$tst_compi_inet_ntop" = "yes"; then + AC_MSG_CHECKING([if inet_ntop seems to work]) + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stdlib + $cares_includes_arpa_inet + $cares_includes_string + ]],[[ + char ipv6res[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; + char ipv4res[sizeof "255.255.255.255"]; + unsigned char ipv6a[26]; + unsigned char ipv4a[5]; + char *ipv6ptr = 0; + char *ipv4ptr = 0; + /* - */ + ipv4res[0] = '\0'; + ipv4a[0] = 0xc0; + ipv4a[1] = 0xa8; + ipv4a[2] = 0x64; + ipv4a[3] = 0x01; + ipv4a[4] = 0x01; + /* - */ + ipv4ptr = inet_ntop(AF_INET, ipv4a, ipv4res, sizeof(ipv4res)); + if(!ipv4ptr) + exit(1); /* fail */ + if(ipv4ptr != ipv4res) + exit(1); /* fail */ + if(!ipv4ptr[0]) + exit(1); /* fail */ + if(memcmp(ipv4res, "192.168.100.1", 13) != 0) + exit(1); /* fail */ + /* - */ + ipv6res[0] = '\0'; + memset(ipv6a, 0, sizeof(ipv6a)); + ipv6a[0] = 0xfe; + ipv6a[1] = 0x80; + ipv6a[8] = 0x02; + ipv6a[9] = 0x14; + ipv6a[10] = 0x4f; + ipv6a[11] = 0xff; + ipv6a[12] = 0xfe; + ipv6a[13] = 0x0b; + ipv6a[14] = 0x76; + ipv6a[15] = 0xc8; + ipv6a[25] = 0x01; + /* - */ + ipv6ptr = inet_ntop(AF_INET6, ipv6a, ipv6res, sizeof(ipv6res)); + if(!ipv6ptr) + exit(1); /* fail */ + if(ipv6ptr != ipv6res) + exit(1); /* fail */ + if(!ipv6ptr[0]) + exit(1); /* fail */ + if(memcmp(ipv6res, "fe80::214:4fff:fe0b:76c8", 24) != 0) + exit(1); /* fail */ + /* - */ + exit(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_works_inet_ntop="yes" + ],[ + AC_MSG_RESULT([no]) + tst_works_inet_ntop="no" + ]) + fi + # + if test "$tst_compi_inet_ntop" = "yes" && + test "$tst_works_inet_ntop" != "no"; then + AC_MSG_CHECKING([if inet_ntop usage allowed]) + if test "x$cares_disallow_inet_ntop" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_inet_ntop="yes" + else + AC_MSG_RESULT([no]) + tst_allow_inet_ntop="no" + fi + fi + # + AC_MSG_CHECKING([if inet_ntop might be used]) + if test "$tst_links_inet_ntop" = "yes" && + test "$tst_proto_inet_ntop" = "yes" && + test "$tst_compi_inet_ntop" = "yes" && + test "$tst_allow_inet_ntop" = "yes" && + test "$tst_works_inet_ntop" != "no"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_INET_NTOP, 1, + [Define to 1 if you have a IPv6 capable working inet_ntop function.]) + ac_cv_func_inet_ntop="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_inet_ntop="no" + fi +]) + + +dnl CARES_CHECK_FUNC_INET_PTON +dnl ------------------------------------------------- +dnl Verify if inet_pton is available, prototyped, can +dnl be compiled and seems to work. If all of these are +dnl true, and usage has not been previously disallowed +dnl with shell variable cares_disallow_inet_pton, then +dnl HAVE_INET_PTON will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_INET_PTON], [ + AC_REQUIRE([CARES_INCLUDES_STDLIB])dnl + AC_REQUIRE([CARES_INCLUDES_ARPA_INET])dnl + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_inet_pton="unknown" + tst_proto_inet_pton="unknown" + tst_compi_inet_pton="unknown" + tst_works_inet_pton="unknown" + tst_allow_inet_pton="unknown" + # + AC_MSG_CHECKING([if inet_pton can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([inet_pton]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_inet_pton="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_inet_pton="no" + ]) + # + if test "$tst_links_inet_pton" = "yes"; then + AC_MSG_CHECKING([if inet_pton is prototyped]) + AC_EGREP_CPP([inet_pton],[ + $cares_includes_arpa_inet + ],[ + AC_MSG_RESULT([yes]) + tst_proto_inet_pton="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_inet_pton="no" + ]) + fi + # + if test "$tst_proto_inet_pton" = "yes"; then + AC_MSG_CHECKING([if inet_pton is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_arpa_inet + ]],[[ + if(0 != inet_pton(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_inet_pton="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_inet_pton="no" + ]) + fi + # + dnl only do runtime verification when not cross-compiling + if test "x$cross_compiling" != "xyes" && + test "$tst_compi_inet_pton" = "yes"; then + AC_MSG_CHECKING([if inet_pton seems to work]) + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stdlib + $cares_includes_arpa_inet + $cares_includes_string + ]],[[ + unsigned char ipv6a[16+1]; + unsigned char ipv4a[4+1]; + const char *ipv6src = "fe80::214:4fff:fe0b:76c8"; + const char *ipv4src = "192.168.100.1"; + /* - */ + memset(ipv4a, 1, sizeof(ipv4a)); + if(1 != inet_pton(AF_INET, ipv4src, ipv4a)) + exit(1); /* fail */ + /* - */ + if( (ipv4a[0] != 0xc0) || + (ipv4a[1] != 0xa8) || + (ipv4a[2] != 0x64) || + (ipv4a[3] != 0x01) || + (ipv4a[4] != 0x01) ) + exit(1); /* fail */ + /* - */ + memset(ipv6a, 1, sizeof(ipv6a)); + if(1 != inet_pton(AF_INET6, ipv6src, ipv6a)) + exit(1); /* fail */ + /* - */ + if( (ipv6a[0] != 0xfe) || + (ipv6a[1] != 0x80) || + (ipv6a[8] != 0x02) || + (ipv6a[9] != 0x14) || + (ipv6a[10] != 0x4f) || + (ipv6a[11] != 0xff) || + (ipv6a[12] != 0xfe) || + (ipv6a[13] != 0x0b) || + (ipv6a[14] != 0x76) || + (ipv6a[15] != 0xc8) || + (ipv6a[16] != 0x01) ) + exit(1); /* fail */ + /* - */ + if( (ipv6a[2] != 0x0) || + (ipv6a[3] != 0x0) || + (ipv6a[4] != 0x0) || + (ipv6a[5] != 0x0) || + (ipv6a[6] != 0x0) || + (ipv6a[7] != 0x0) ) + exit(1); /* fail */ + /* - */ + exit(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_works_inet_pton="yes" + ],[ + AC_MSG_RESULT([no]) + tst_works_inet_pton="no" + ]) + fi + # + if test "$tst_compi_inet_pton" = "yes" && + test "$tst_works_inet_pton" != "no"; then + AC_MSG_CHECKING([if inet_pton usage allowed]) + if test "x$cares_disallow_inet_pton" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_inet_pton="yes" + else + AC_MSG_RESULT([no]) + tst_allow_inet_pton="no" + fi + fi + # + AC_MSG_CHECKING([if inet_pton might be used]) + if test "$tst_links_inet_pton" = "yes" && + test "$tst_proto_inet_pton" = "yes" && + test "$tst_compi_inet_pton" = "yes" && + test "$tst_allow_inet_pton" = "yes" && + test "$tst_works_inet_pton" != "no"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_INET_PTON, 1, + [Define to 1 if you have a IPv6 capable working inet_pton function.]) + ac_cv_func_inet_pton="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_inet_pton="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTL +dnl ------------------------------------------------- +dnl Verify if ioctl is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_ioctl, then +dnl HAVE_IOCTL will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTL], [ + AC_REQUIRE([CARES_INCLUDES_STROPTS])dnl + # + tst_links_ioctl="unknown" + tst_proto_ioctl="unknown" + tst_compi_ioctl="unknown" + tst_allow_ioctl="unknown" + # + AC_MSG_CHECKING([if ioctl can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([ioctl]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_ioctl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_ioctl="no" + ]) + # + if test "$tst_links_ioctl" = "yes"; then + AC_MSG_CHECKING([if ioctl is prototyped]) + AC_EGREP_CPP([ioctl],[ + $cares_includes_stropts + ],[ + AC_MSG_RESULT([yes]) + tst_proto_ioctl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_ioctl="no" + ]) + fi + # + if test "$tst_proto_ioctl" = "yes"; then + AC_MSG_CHECKING([if ioctl is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stropts + ]],[[ + if(0 != ioctl(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctl="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctl="no" + ]) + fi + # + if test "$tst_compi_ioctl" = "yes"; then + AC_MSG_CHECKING([if ioctl usage allowed]) + if test "x$cares_disallow_ioctl" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctl="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctl="no" + fi + fi + # + AC_MSG_CHECKING([if ioctl might be used]) + if test "$tst_links_ioctl" = "yes" && + test "$tst_proto_ioctl" = "yes" && + test "$tst_compi_ioctl" = "yes" && + test "$tst_allow_ioctl" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTL, 1, + [Define to 1 if you have the ioctl function.]) + ac_cv_func_ioctl="yes" + CARES_CHECK_FUNC_IOCTL_FIONBIO + CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctl="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTL_FIONBIO +dnl ------------------------------------------------- +dnl Verify if ioctl with the FIONBIO command is +dnl available, can be compiled, and seems to work. If +dnl all of these are true, then HAVE_IOCTL_FIONBIO +dnl will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTL_FIONBIO], [ + # + tst_compi_ioctl_fionbio="unknown" + tst_allow_ioctl_fionbio="unknown" + # + if test "$ac_cv_func_ioctl" = "yes"; then + AC_MSG_CHECKING([if ioctl FIONBIO is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stropts + ]],[[ + int flags = 0; + if(0 != ioctl(0, FIONBIO, &flags)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctl_fionbio="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctl_fionbio="no" + ]) + fi + # + if test "$tst_compi_ioctl_fionbio" = "yes"; then + AC_MSG_CHECKING([if ioctl FIONBIO usage allowed]) + if test "x$cares_disallow_ioctl_fionbio" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctl_fionbio="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctl_fionbio="no" + fi + fi + # + AC_MSG_CHECKING([if ioctl FIONBIO might be used]) + if test "$tst_compi_ioctl_fionbio" = "yes" && + test "$tst_allow_ioctl_fionbio" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTL_FIONBIO, 1, + [Define to 1 if you have a working ioctl FIONBIO function.]) + ac_cv_func_ioctl_fionbio="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctl_fionbio="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR +dnl ------------------------------------------------- +dnl Verify if ioctl with the SIOCGIFADDR command is available, +dnl struct ifreq is defined, they can be compiled, and seem to +dnl work. If all of these are true, then HAVE_IOCTL_SIOCGIFADDR +dnl will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR], [ + # + tst_compi_ioctl_siocgifaddr="unknown" + tst_allow_ioctl_siocgifaddr="unknown" + # + if test "$ac_cv_func_ioctl" = "yes"; then + AC_MSG_CHECKING([if ioctl SIOCGIFADDR is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stropts + #include <net/if.h> + ]],[[ + struct ifreq ifr; + if(0 != ioctl(0, SIOCGIFADDR, &ifr)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctl_siocgifaddr="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctl_siocgifaddr="no" + ]) + fi + # + if test "$tst_compi_ioctl_siocgifaddr" = "yes"; then + AC_MSG_CHECKING([if ioctl SIOCGIFADDR usage allowed]) + if test "x$cares_disallow_ioctl_siocgifaddr" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctl_siocgifaddr="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctl_siocgifaddr="no" + fi + fi + # + AC_MSG_CHECKING([if ioctl SIOCGIFADDR might be used]) + if test "$tst_compi_ioctl_siocgifaddr" = "yes" && + test "$tst_allow_ioctl_siocgifaddr" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTL_SIOCGIFADDR, 1, + [Define to 1 if you have a working ioctl SIOCGIFADDR function.]) + ac_cv_func_ioctl_siocgifaddr="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctl_siocgifaddr="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTLSOCKET +dnl ------------------------------------------------- +dnl Verify if ioctlsocket is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_ioctlsocket, then +dnl HAVE_IOCTLSOCKET will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + # + tst_links_ioctlsocket="unknown" + tst_proto_ioctlsocket="unknown" + tst_compi_ioctlsocket="unknown" + tst_allow_ioctlsocket="unknown" + # + AC_MSG_CHECKING([if ioctlsocket can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + ]],[[ + if(0 != ioctlsocket(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_ioctlsocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_ioctlsocket="no" + ]) + # + if test "$tst_links_ioctlsocket" = "yes"; then + AC_MSG_CHECKING([if ioctlsocket is prototyped]) + AC_EGREP_CPP([ioctlsocket],[ + $cares_includes_winsock2 + ],[ + AC_MSG_RESULT([yes]) + tst_proto_ioctlsocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_ioctlsocket="no" + ]) + fi + # + if test "$tst_proto_ioctlsocket" = "yes"; then + AC_MSG_CHECKING([if ioctlsocket is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + ]],[[ + if(0 != ioctlsocket(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctlsocket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctlsocket="no" + ]) + fi + # + if test "$tst_compi_ioctlsocket" = "yes"; then + AC_MSG_CHECKING([if ioctlsocket usage allowed]) + if test "x$cares_disallow_ioctlsocket" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctlsocket="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctlsocket="no" + fi + fi + # + AC_MSG_CHECKING([if ioctlsocket might be used]) + if test "$tst_links_ioctlsocket" = "yes" && + test "$tst_proto_ioctlsocket" = "yes" && + test "$tst_compi_ioctlsocket" = "yes" && + test "$tst_allow_ioctlsocket" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET, 1, + [Define to 1 if you have the ioctlsocket function.]) + ac_cv_func_ioctlsocket="yes" + CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctlsocket="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO +dnl ------------------------------------------------- +dnl Verify if ioctlsocket with the FIONBIO command is +dnl available, can be compiled, and seems to work. If +dnl all of these are true, then HAVE_IOCTLSOCKET_FIONBIO +dnl will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_FIONBIO], [ + # + tst_compi_ioctlsocket_fionbio="unknown" + tst_allow_ioctlsocket_fionbio="unknown" + # + if test "$ac_cv_func_ioctlsocket" = "yes"; then + AC_MSG_CHECKING([if ioctlsocket FIONBIO is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + ]],[[ + int flags = 0; + if(0 != ioctlsocket(0, FIONBIO, &flags)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctlsocket_fionbio="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctlsocket_fionbio="no" + ]) + fi + # + if test "$tst_compi_ioctlsocket_fionbio" = "yes"; then + AC_MSG_CHECKING([if ioctlsocket FIONBIO usage allowed]) + if test "x$cares_disallow_ioctlsocket_fionbio" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctlsocket_fionbio="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctlsocket_fionbio="no" + fi + fi + # + AC_MSG_CHECKING([if ioctlsocket FIONBIO might be used]) + if test "$tst_compi_ioctlsocket_fionbio" = "yes" && + test "$tst_allow_ioctlsocket_fionbio" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_FIONBIO, 1, + [Define to 1 if you have a working ioctlsocket FIONBIO function.]) + ac_cv_func_ioctlsocket_fionbio="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctlsocket_fionbio="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL +dnl ------------------------------------------------- +dnl Verify if IoctlSocket is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_ioctlsocket_camel, +dnl then HAVE_IOCTLSOCKET_CAMEL will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL], [ + AC_REQUIRE([CARES_INCLUDES_STROPTS])dnl + # + tst_links_ioctlsocket_camel="unknown" + tst_proto_ioctlsocket_camel="unknown" + tst_compi_ioctlsocket_camel="unknown" + tst_allow_ioctlsocket_camel="unknown" + # + AC_MSG_CHECKING([if IoctlSocket can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([IoctlSocket]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_ioctlsocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_ioctlsocket_camel="no" + ]) + # + if test "$tst_links_ioctlsocket_camel" = "yes"; then + AC_MSG_CHECKING([if IoctlSocket is prototyped]) + AC_EGREP_CPP([IoctlSocket],[ + $cares_includes_stropts + ],[ + AC_MSG_RESULT([yes]) + tst_proto_ioctlsocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_ioctlsocket_camel="no" + ]) + fi + # + if test "$tst_proto_ioctlsocket_camel" = "yes"; then + AC_MSG_CHECKING([if IoctlSocket is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stropts + ]],[[ + if(0 != IoctlSocket(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctlsocket_camel="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctlsocket_camel="no" + ]) + fi + # + if test "$tst_compi_ioctlsocket_camel" = "yes"; then + AC_MSG_CHECKING([if IoctlSocket usage allowed]) + if test "x$cares_disallow_ioctlsocket_camel" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctlsocket_camel="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctlsocket_camel="no" + fi + fi + # + AC_MSG_CHECKING([if IoctlSocket might be used]) + if test "$tst_links_ioctlsocket_camel" = "yes" && + test "$tst_proto_ioctlsocket_camel" = "yes" && + test "$tst_compi_ioctlsocket_camel" = "yes" && + test "$tst_allow_ioctlsocket_camel" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_CAMEL, 1, + [Define to 1 if you have the IoctlSocket camel case function.]) + ac_cv_func_ioctlsocket_camel="yes" + CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctlsocket_camel="no" + fi +]) + + +dnl CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO +dnl ------------------------------------------------- +dnl Verify if IoctlSocket with FIONBIO command is available, +dnl can be compiled, and seems to work. If all of these are +dnl true, then HAVE_IOCTLSOCKET_CAMEL_FIONBIO will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL_FIONBIO], [ + # + tst_compi_ioctlsocket_camel_fionbio="unknown" + tst_allow_ioctlsocket_camel_fionbio="unknown" + # + if test "$ac_cv_func_ioctlsocket_camel" = "yes"; then + AC_MSG_CHECKING([if IoctlSocket FIONBIO is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_stropts + ]],[[ + long flags = 0; + if(0 != ioctlsocket(0, FIONBIO, &flags)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_ioctlsocket_camel_fionbio="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_ioctlsocket_camel_fionbio="no" + ]) + fi + # + if test "$tst_compi_ioctlsocket_camel_fionbio" = "yes"; then + AC_MSG_CHECKING([if IoctlSocket FIONBIO usage allowed]) + if test "x$cares_disallow_ioctlsocket_camel_fionbio" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_ioctlsocket_camel_fionbio="yes" + else + AC_MSG_RESULT([no]) + tst_allow_ioctlsocket_camel_fionbio="no" + fi + fi + # + AC_MSG_CHECKING([if IoctlSocket FIONBIO might be used]) + if test "$tst_compi_ioctlsocket_camel_fionbio" = "yes" && + test "$tst_allow_ioctlsocket_camel_fionbio" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_IOCTLSOCKET_CAMEL_FIONBIO, 1, + [Define to 1 if you have a working IoctlSocket camel case FIONBIO function.]) + ac_cv_func_ioctlsocket_camel_fionbio="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_ioctlsocket_camel_fionbio="no" + fi +]) + + +dnl CARES_CHECK_FUNC_SETSOCKOPT +dnl ------------------------------------------------- +dnl Verify if setsockopt is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_setsockopt, then +dnl HAVE_SETSOCKOPT will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_SETSOCKOPT], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + # + tst_links_setsockopt="unknown" + tst_proto_setsockopt="unknown" + tst_compi_setsockopt="unknown" + tst_allow_setsockopt="unknown" + # + AC_MSG_CHECKING([if setsockopt can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + ]],[[ + if(0 != setsockopt(0, 0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_setsockopt="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_setsockopt="no" + ]) + # + if test "$tst_links_setsockopt" = "yes"; then + AC_MSG_CHECKING([if setsockopt is prototyped]) + AC_EGREP_CPP([setsockopt],[ + $cares_includes_winsock2 + $cares_includes_sys_socket + ],[ + AC_MSG_RESULT([yes]) + tst_proto_setsockopt="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_setsockopt="no" + ]) + fi + # + if test "$tst_proto_setsockopt" = "yes"; then + AC_MSG_CHECKING([if setsockopt is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + ]],[[ + if(0 != setsockopt(0, 0, 0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_setsockopt="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_setsockopt="no" + ]) + fi + # + if test "$tst_compi_setsockopt" = "yes"; then + AC_MSG_CHECKING([if setsockopt usage allowed]) + if test "x$cares_disallow_setsockopt" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_setsockopt="yes" + else + AC_MSG_RESULT([no]) + tst_allow_setsockopt="no" + fi + fi + # + AC_MSG_CHECKING([if setsockopt might be used]) + if test "$tst_links_setsockopt" = "yes" && + test "$tst_proto_setsockopt" = "yes" && + test "$tst_compi_setsockopt" = "yes" && + test "$tst_allow_setsockopt" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_SETSOCKOPT, 1, + [Define to 1 if you have the setsockopt function.]) + ac_cv_func_setsockopt="yes" + CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK + else + AC_MSG_RESULT([no]) + ac_cv_func_setsockopt="no" + fi +]) + + +dnl CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK +dnl ------------------------------------------------- +dnl Verify if setsockopt with the SO_NONBLOCK command is +dnl available, can be compiled, and seems to work. If +dnl all of these are true, then HAVE_SETSOCKOPT_SO_NONBLOCK +dnl will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_SETSOCKOPT_SO_NONBLOCK], [ + # + tst_compi_setsockopt_so_nonblock="unknown" + tst_allow_setsockopt_so_nonblock="unknown" + # + if test "$ac_cv_func_setsockopt" = "yes"; then + AC_MSG_CHECKING([if setsockopt SO_NONBLOCK is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + ]],[[ + if(0 != setsockopt(0, SOL_SOCKET, SO_NONBLOCK, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_setsockopt_so_nonblock="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_setsockopt_so_nonblock="no" + ]) + fi + # + if test "$tst_compi_setsockopt_so_nonblock" = "yes"; then + AC_MSG_CHECKING([if setsockopt SO_NONBLOCK usage allowed]) + if test "x$cares_disallow_setsockopt_so_nonblock" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_setsockopt_so_nonblock="yes" + else + AC_MSG_RESULT([no]) + tst_allow_setsockopt_so_nonblock="no" + fi + fi + # + AC_MSG_CHECKING([if setsockopt SO_NONBLOCK might be used]) + if test "$tst_compi_setsockopt_so_nonblock" = "yes" && + test "$tst_allow_setsockopt_so_nonblock" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_SETSOCKOPT_SO_NONBLOCK, 1, + [Define to 1 if you have a working setsockopt SO_NONBLOCK function.]) + ac_cv_func_setsockopt_so_nonblock="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_setsockopt_so_nonblock="no" + fi +]) + + +dnl CARES_CHECK_FUNC_SOCKET +dnl ------------------------------------------------- +dnl Verify if socket is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_socket, then +dnl HAVE_SOCKET will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_SOCKET], [ + AC_REQUIRE([CARES_INCLUDES_WINSOCK2])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_INCLUDES_SOCKET])dnl + # + tst_links_socket="unknown" + tst_proto_socket="unknown" + tst_compi_socket="unknown" + tst_allow_socket="unknown" + # + AC_MSG_CHECKING([if socket can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ]],[[ + if(0 != socket(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_socket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_socket="no" + ]) + # + if test "$tst_links_socket" = "yes"; then + AC_MSG_CHECKING([if socket is prototyped]) + AC_EGREP_CPP([socket],[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ],[ + AC_MSG_RESULT([yes]) + tst_proto_socket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_socket="no" + ]) + fi + # + if test "$tst_proto_socket" = "yes"; then + AC_MSG_CHECKING([if socket is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_winsock2 + $cares_includes_sys_socket + $cares_includes_socket + ]],[[ + if(0 != socket(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_socket="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_socket="no" + ]) + fi + # + if test "$tst_compi_socket" = "yes"; then + AC_MSG_CHECKING([if socket usage allowed]) + if test "x$cares_disallow_socket" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_socket="yes" + else + AC_MSG_RESULT([no]) + tst_allow_socket="no" + fi + fi + # + AC_MSG_CHECKING([if socket might be used]) + if test "$tst_links_socket" = "yes" && + test "$tst_proto_socket" = "yes" && + test "$tst_compi_socket" = "yes" && + test "$tst_allow_socket" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_SOCKET, 1, + [Define to 1 if you have the socket function.]) + ac_cv_func_socket="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_socket="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRCASECMP +dnl ------------------------------------------------- +dnl Verify if strcasecmp is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strcasecmp, then +dnl HAVE_STRCASECMP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRCASECMP], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strcasecmp="unknown" + tst_proto_strcasecmp="unknown" + tst_compi_strcasecmp="unknown" + tst_allow_strcasecmp="unknown" + # + AC_MSG_CHECKING([if strcasecmp can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strcasecmp]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strcasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strcasecmp="no" + ]) + # + if test "$tst_links_strcasecmp" = "yes"; then + AC_MSG_CHECKING([if strcasecmp is prototyped]) + AC_EGREP_CPP([strcasecmp],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strcasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strcasecmp="no" + ]) + fi + # + if test "$tst_proto_strcasecmp" = "yes"; then + AC_MSG_CHECKING([if strcasecmp is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strcasecmp(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strcasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strcasecmp="no" + ]) + fi + # + if test "$tst_compi_strcasecmp" = "yes"; then + AC_MSG_CHECKING([if strcasecmp usage allowed]) + if test "x$cares_disallow_strcasecmp" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strcasecmp="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strcasecmp="no" + fi + fi + # + AC_MSG_CHECKING([if strcasecmp might be used]) + if test "$tst_links_strcasecmp" = "yes" && + test "$tst_proto_strcasecmp" = "yes" && + test "$tst_compi_strcasecmp" = "yes" && + test "$tst_allow_strcasecmp" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRCASECMP, 1, + [Define to 1 if you have the strcasecmp function.]) + ac_cv_func_strcasecmp="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strcasecmp="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRCMPI +dnl ------------------------------------------------- +dnl Verify if strcmpi is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strcmpi, then +dnl HAVE_STRCMPI will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRCMPI], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strcmpi="unknown" + tst_proto_strcmpi="unknown" + tst_compi_strcmpi="unknown" + tst_allow_strcmpi="unknown" + # + AC_MSG_CHECKING([if strcmpi can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strcmpi]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strcmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strcmpi="no" + ]) + # + if test "$tst_links_strcmpi" = "yes"; then + AC_MSG_CHECKING([if strcmpi is prototyped]) + AC_EGREP_CPP([strcmpi],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strcmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strcmpi="no" + ]) + fi + # + if test "$tst_proto_strcmpi" = "yes"; then + AC_MSG_CHECKING([if strcmpi is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strcmpi(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strcmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strcmpi="no" + ]) + fi + # + if test "$tst_compi_strcmpi" = "yes"; then + AC_MSG_CHECKING([if strcmpi usage allowed]) + if test "x$cares_disallow_strcmpi" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strcmpi="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strcmpi="no" + fi + fi + # + AC_MSG_CHECKING([if strcmpi might be used]) + if test "$tst_links_strcmpi" = "yes" && + test "$tst_proto_strcmpi" = "yes" && + test "$tst_compi_strcmpi" = "yes" && + test "$tst_allow_strcmpi" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRCMPI, 1, + [Define to 1 if you have the strcmpi function.]) + ac_cv_func_strcmpi="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strcmpi="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRDUP +dnl ------------------------------------------------- +dnl Verify if strdup is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strdup, then +dnl HAVE_STRDUP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRDUP], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strdup="unknown" + tst_proto_strdup="unknown" + tst_compi_strdup="unknown" + tst_allow_strdup="unknown" + # + AC_MSG_CHECKING([if strdup can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strdup]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strdup="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strdup="no" + ]) + # + if test "$tst_links_strdup" = "yes"; then + AC_MSG_CHECKING([if strdup is prototyped]) + AC_EGREP_CPP([strdup],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strdup="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strdup="no" + ]) + fi + # + if test "$tst_proto_strdup" = "yes"; then + AC_MSG_CHECKING([if strdup is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strdup(0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strdup="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strdup="no" + ]) + fi + # + if test "$tst_compi_strdup" = "yes"; then + AC_MSG_CHECKING([if strdup usage allowed]) + if test "x$cares_disallow_strdup" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strdup="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strdup="no" + fi + fi + # + AC_MSG_CHECKING([if strdup might be used]) + if test "$tst_links_strdup" = "yes" && + test "$tst_proto_strdup" = "yes" && + test "$tst_compi_strdup" = "yes" && + test "$tst_allow_strdup" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRDUP, 1, + [Define to 1 if you have the strdup function.]) + ac_cv_func_strdup="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strdup="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRICMP +dnl ------------------------------------------------- +dnl Verify if stricmp is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_stricmp, then +dnl HAVE_STRICMP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRICMP], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_stricmp="unknown" + tst_proto_stricmp="unknown" + tst_compi_stricmp="unknown" + tst_allow_stricmp="unknown" + # + AC_MSG_CHECKING([if stricmp can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([stricmp]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_stricmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_stricmp="no" + ]) + # + if test "$tst_links_stricmp" = "yes"; then + AC_MSG_CHECKING([if stricmp is prototyped]) + AC_EGREP_CPP([stricmp],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_stricmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_stricmp="no" + ]) + fi + # + if test "$tst_proto_stricmp" = "yes"; then + AC_MSG_CHECKING([if stricmp is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != stricmp(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_stricmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_stricmp="no" + ]) + fi + # + if test "$tst_compi_stricmp" = "yes"; then + AC_MSG_CHECKING([if stricmp usage allowed]) + if test "x$cares_disallow_stricmp" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_stricmp="yes" + else + AC_MSG_RESULT([no]) + tst_allow_stricmp="no" + fi + fi + # + AC_MSG_CHECKING([if stricmp might be used]) + if test "$tst_links_stricmp" = "yes" && + test "$tst_proto_stricmp" = "yes" && + test "$tst_compi_stricmp" = "yes" && + test "$tst_allow_stricmp" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRICMP, 1, + [Define to 1 if you have the stricmp function.]) + ac_cv_func_stricmp="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_stricmp="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRNCASECMP +dnl ------------------------------------------------- +dnl Verify if strncasecmp is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strncasecmp, then +dnl HAVE_STRNCASECMP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRNCASECMP], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strncasecmp="unknown" + tst_proto_strncasecmp="unknown" + tst_compi_strncasecmp="unknown" + tst_allow_strncasecmp="unknown" + # + AC_MSG_CHECKING([if strncasecmp can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strncasecmp]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strncasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strncasecmp="no" + ]) + # + if test "$tst_links_strncasecmp" = "yes"; then + AC_MSG_CHECKING([if strncasecmp is prototyped]) + AC_EGREP_CPP([strncasecmp],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strncasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strncasecmp="no" + ]) + fi + # + if test "$tst_proto_strncasecmp" = "yes"; then + AC_MSG_CHECKING([if strncasecmp is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strncasecmp(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strncasecmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strncasecmp="no" + ]) + fi + # + if test "$tst_compi_strncasecmp" = "yes"; then + AC_MSG_CHECKING([if strncasecmp usage allowed]) + if test "x$cares_disallow_strncasecmp" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strncasecmp="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strncasecmp="no" + fi + fi + # + AC_MSG_CHECKING([if strncasecmp might be used]) + if test "$tst_links_strncasecmp" = "yes" && + test "$tst_proto_strncasecmp" = "yes" && + test "$tst_compi_strncasecmp" = "yes" && + test "$tst_allow_strncasecmp" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRNCASECMP, 1, + [Define to 1 if you have the strncasecmp function.]) + ac_cv_func_strncasecmp="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strncasecmp="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRNCMPI +dnl ------------------------------------------------- +dnl Verify if strncmpi is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strncmpi, then +dnl HAVE_STRNCMPI will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRNCMPI], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strncmpi="unknown" + tst_proto_strncmpi="unknown" + tst_compi_strncmpi="unknown" + tst_allow_strncmpi="unknown" + # + AC_MSG_CHECKING([if strncmpi can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strncmpi]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strncmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strncmpi="no" + ]) + # + if test "$tst_links_strncmpi" = "yes"; then + AC_MSG_CHECKING([if strncmpi is prototyped]) + AC_EGREP_CPP([strncmpi],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strncmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strncmpi="no" + ]) + fi + # + if test "$tst_proto_strncmpi" = "yes"; then + AC_MSG_CHECKING([if strncmpi is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strncmpi(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strncmpi="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strncmpi="no" + ]) + fi + # + if test "$tst_compi_strncmpi" = "yes"; then + AC_MSG_CHECKING([if strncmpi usage allowed]) + if test "x$cares_disallow_strncmpi" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strncmpi="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strncmpi="no" + fi + fi + # + AC_MSG_CHECKING([if strncmpi might be used]) + if test "$tst_links_strncmpi" = "yes" && + test "$tst_proto_strncmpi" = "yes" && + test "$tst_compi_strncmpi" = "yes" && + test "$tst_allow_strncmpi" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRNCMPI, 1, + [Define to 1 if you have the strncmpi function.]) + ac_cv_func_strncmpi="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strncmpi="no" + fi +]) + + +dnl CARES_CHECK_FUNC_STRNICMP +dnl ------------------------------------------------- +dnl Verify if strnicmp is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_strnicmp, then +dnl HAVE_STRNICMP will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_STRNICMP], [ + AC_REQUIRE([CARES_INCLUDES_STRING])dnl + # + tst_links_strnicmp="unknown" + tst_proto_strnicmp="unknown" + tst_compi_strnicmp="unknown" + tst_allow_strnicmp="unknown" + # + AC_MSG_CHECKING([if strnicmp can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strnicmp]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_strnicmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_strnicmp="no" + ]) + # + if test "$tst_links_strnicmp" = "yes"; then + AC_MSG_CHECKING([if strnicmp is prototyped]) + AC_EGREP_CPP([strnicmp],[ + $cares_includes_string + ],[ + AC_MSG_RESULT([yes]) + tst_proto_strnicmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_strnicmp="no" + ]) + fi + # + if test "$tst_proto_strnicmp" = "yes"; then + AC_MSG_CHECKING([if strnicmp is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_string + ]],[[ + if(0 != strnicmp(0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_strnicmp="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_strnicmp="no" + ]) + fi + # + if test "$tst_compi_strnicmp" = "yes"; then + AC_MSG_CHECKING([if strnicmp usage allowed]) + if test "x$cares_disallow_strnicmp" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_strnicmp="yes" + else + AC_MSG_RESULT([no]) + tst_allow_strnicmp="no" + fi + fi + # + AC_MSG_CHECKING([if strnicmp might be used]) + if test "$tst_links_strnicmp" = "yes" && + test "$tst_proto_strnicmp" = "yes" && + test "$tst_compi_strnicmp" = "yes" && + test "$tst_allow_strnicmp" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_STRNICMP, 1, + [Define to 1 if you have the strnicmp function.]) + ac_cv_func_strnicmp="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_strnicmp="no" + fi +]) + + +dnl CARES_CHECK_FUNC_WRITEV +dnl ------------------------------------------------- +dnl Verify if writev is available, prototyped, and +dnl can be compiled. If all of these are true, and +dnl usage has not been previously disallowed with +dnl shell variable cares_disallow_writev, then +dnl HAVE_WRITEV will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_WRITEV], [ + AC_REQUIRE([CARES_INCLUDES_SYS_UIO])dnl + # + tst_links_writev="unknown" + tst_proto_writev="unknown" + tst_compi_writev="unknown" + tst_allow_writev="unknown" + # + AC_MSG_CHECKING([if writev can be linked]) + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([writev]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_writev="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_writev="no" + ]) + # + if test "$tst_links_writev" = "yes"; then + AC_MSG_CHECKING([if writev is prototyped]) + AC_EGREP_CPP([writev],[ + $cares_includes_sys_uio + ],[ + AC_MSG_RESULT([yes]) + tst_proto_writev="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_writev="no" + ]) + fi + # + if test "$tst_proto_writev" = "yes"; then + AC_MSG_CHECKING([if writev is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_uio + ]],[[ + if(0 != writev(0, 0, 0)) + return 1; + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_writev="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_writev="no" + ]) + fi + # + if test "$tst_compi_writev" = "yes"; then + AC_MSG_CHECKING([if writev usage allowed]) + if test "x$cares_disallow_writev" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_writev="yes" + else + AC_MSG_RESULT([no]) + tst_allow_writev="no" + fi + fi + # + AC_MSG_CHECKING([if writev might be used]) + if test "$tst_links_writev" = "yes" && + test "$tst_proto_writev" = "yes" && + test "$tst_compi_writev" = "yes" && + test "$tst_allow_writev" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_WRITEV, 1, + [Define to 1 if you have the writev function.]) + ac_cv_func_writev="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_writev="no" + fi +]) diff --git a/m4/cares-override.m4 b/m4/cares-override.m4 new file mode 100644 index 0000000..ba45cdf --- /dev/null +++ b/m4/cares-override.m4 @@ -0,0 +1,102 @@ +#*************************************************************************** +# $Id: cares-override.m4,v 1.3 2009-10-19 04:11:54 yangtse Exp $ +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 3 + +dnl CARES_OVERRIDE_AUTOCONF +dnl ------------------------------------------------- +dnl Placing a call to this macro in configure.ac after +dnl the one to AC_INIT will make macros in this file +dnl visible to the rest of the compilation overriding +dnl those from Autoconf. + +AC_DEFUN([CARES_OVERRIDE_AUTOCONF], [ +AC_BEFORE([$0],[AC_PROG_LIBTOOL]) +# using cares-override.m4 +]) + +dnl Override some Libtool tests +dnl ------------------------------------------------- +dnl This is done to prevent Libtool 1.5.X from doing +dnl unnecesary C++, Fortran and Java tests and reduce +dnl resulting configure script by nearly 300 Kb. + +m4_define([AC_LIBTOOL_LANG_CXX_CONFIG],[:]) +m4_define([AC_LIBTOOL_LANG_F77_CONFIG],[:]) +m4_define([AC_LIBTOOL_LANG_GCJ_CONFIG],[:]) + +dnl Override Autoconf's AC_LANG_PROGRAM (C) +dnl ------------------------------------------------- +dnl This is done to prevent compiler warning +dnl 'function declaration isn't a prototype' +dnl in function main. This requires at least +dnl a c89 compiler and does not suport K&R. + +m4_define([AC_LANG_PROGRAM(C)], +[$1 +int main (void) +{ +$2 + ; + return 0; +}]) + +dnl Override Autoconf's AC_LANG_CALL (C) +dnl ------------------------------------------------- +dnl This is a backport of Autoconf's 2.60 with the +dnl embedded comments that hit the resulting script +dnl removed. This is done to reduce configure size +dnl and use fixed macro across Autoconf versions. + +m4_define([AC_LANG_CALL(C)], +[AC_LANG_PROGRAM([$1 +m4_if([$2], [main], , +[ +#ifdef __cplusplus +extern "C" +#endif +char $2 ();])], [return $2 ();])]) + +dnl Override Autoconf's AC_LANG_FUNC_LINK_TRY (C) +dnl ------------------------------------------------- +dnl This is a backport of Autoconf's 2.60 with the +dnl embedded comments that hit the resulting script +dnl removed. This is done to reduce configure size +dnl and use fixed macro across Autoconf versions. + +m4_define([AC_LANG_FUNC_LINK_TRY(C)], +[AC_LANG_PROGRAM( +[ +#define $1 innocuous_$1 +#ifdef __STDC__ +# include <limits.h> +#else +# include <assert.h> +#endif +#undef $1 +#ifdef __cplusplus +extern "C" +#endif +char $1 (); +#if defined __stub_$1 || defined __stub___$1 +choke me +#endif +], [return $1 ();])]) + +dnl Override Autoconf's PATH_SEPARATOR check +dnl ------------------------------------------------- +dnl This is done to ensure that the same check is +dnl used across different Autoconf versions and to +dnl allow us to use this macro early enough in the +dnl configure script. + +m4_defun([_AS_PATH_SEPARATOR_PREPARE], +[CARES_CHECK_PATH_SEPARATOR +m4_define([$0],[])]) + +m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR], +[CARES_CHECK_PATH_SEPARATOR +m4_define([$0],[])]) + diff --git a/m4/cares-reentrant.m4 b/m4/cares-reentrant.m4 new file mode 100644 index 0000000..e91e523 --- /dev/null +++ b/m4/cares-reentrant.m4 @@ -0,0 +1,611 @@ +#*************************************************************************** +# $Id: cares-reentrant.m4,v 1.5 2009-11-14 18:51:37 yangtse Exp $ +# +# Copyright (C) 2008 - 2009 by Daniel Stenberg et al +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose and without fee is hereby granted, provided +# that the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 4 + +dnl Note 1 +dnl ------ +dnl None of the CARES_CHECK_NEED_REENTRANT_* macros shall use HAVE_FOO_H to +dnl conditionally include header files. These macros are used early in the +dnl configure process much before header file availability is known. + + +dnl CARES_CHECK_NEED_REENTRANT_ERRNO +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes errno available as a preprocessor macro. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_ERRNO], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <errno.h> + ]],[[ + if(0 != errno) + return 1; + ]]) + ],[ + tmp_errno="yes" + ],[ + tmp_errno="no" + ]) + if test "$tmp_errno" = "yes"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#include <errno.h> + ]],[[ +#ifdef errno + int dummy=1; +#else + force compilation error +#endif + ]]) + ],[ + tmp_errno="errno_macro_defined" + ],[ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#define _REENTRANT +#include <errno.h> + ]],[[ +#ifdef errno + int dummy=1; +#else + force compilation error +#endif + ]]) + ],[ + tmp_errno="errno_macro_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_GMTIME_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function gmtime_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_GMTIME_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([gmtime_r]) + ],[ + tmp_gmtime_r="yes" + ],[ + tmp_gmtime_r="no" + ]) + if test "$tmp_gmtime_r" = "yes"; then + AC_EGREP_CPP([gmtime_r],[ +#include <sys/types.h> +#include <time.h> + ],[ + tmp_gmtime_r="proto_declared" + ],[ + AC_EGREP_CPP([gmtime_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <time.h> + ],[ + tmp_gmtime_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_LOCALTIME_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function localtime_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_LOCALTIME_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([localtime_r]) + ],[ + tmp_localtime_r="yes" + ],[ + tmp_localtime_r="no" + ]) + if test "$tmp_localtime_r" = "yes"; then + AC_EGREP_CPP([localtime_r],[ +#include <sys/types.h> +#include <time.h> + ],[ + tmp_localtime_r="proto_declared" + ],[ + AC_EGREP_CPP([localtime_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <time.h> + ],[ + tmp_localtime_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_STRERROR_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function strerror_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_STRERROR_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strerror_r]) + ],[ + tmp_strerror_r="yes" + ],[ + tmp_strerror_r="no" + ]) + if test "$tmp_strerror_r" = "yes"; then + AC_EGREP_CPP([strerror_r],[ +#include <sys/types.h> +#include <string.h> + ],[ + tmp_strerror_r="proto_declared" + ],[ + AC_EGREP_CPP([strerror_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <string.h> + ],[ + tmp_strerror_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_STRTOK_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function strtok_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_STRTOK_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([strtok_r]) + ],[ + tmp_strtok_r="yes" + ],[ + tmp_strtok_r="no" + ]) + if test "$tmp_strtok_r" = "yes"; then + AC_EGREP_CPP([strtok_r],[ +#include <sys/types.h> +#include <string.h> + ],[ + tmp_strtok_r="proto_declared" + ],[ + AC_EGREP_CPP([strtok_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <string.h> + ],[ + tmp_strtok_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_INET_NTOA_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function inet_ntoa_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_INET_NTOA_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([inet_ntoa_r]) + ],[ + tmp_inet_ntoa_r="yes" + ],[ + tmp_inet_ntoa_r="no" + ]) + if test "$tmp_inet_ntoa_r" = "yes"; then + AC_EGREP_CPP([inet_ntoa_r],[ +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + ],[ + tmp_inet_ntoa_r="proto_declared" + ],[ + AC_EGREP_CPP([inet_ntoa_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> + ],[ + tmp_inet_ntoa_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function gethostbyaddr_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([gethostbyaddr_r]) + ],[ + tmp_gethostbyaddr_r="yes" + ],[ + tmp_gethostbyaddr_r="no" + ]) + if test "$tmp_gethostbyaddr_r" = "yes"; then + AC_EGREP_CPP([gethostbyaddr_r],[ +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_gethostbyaddr_r="proto_declared" + ],[ + AC_EGREP_CPP([gethostbyaddr_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_gethostbyaddr_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function gethostbyname_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([gethostbyname_r]) + ],[ + tmp_gethostbyname_r="yes" + ],[ + tmp_gethostbyname_r="no" + ]) + if test "$tmp_gethostbyname_r" = "yes"; then + AC_EGREP_CPP([gethostbyname_r],[ +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_gethostbyname_r="proto_declared" + ],[ + AC_EGREP_CPP([gethostbyname_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_gethostbyname_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function getprotobyname_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([getprotobyname_r]) + ],[ + tmp_getprotobyname_r="yes" + ],[ + tmp_getprotobyname_r="no" + ]) + if test "$tmp_getprotobyname_r" = "yes"; then + AC_EGREP_CPP([getprotobyname_r],[ +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_getprotobyname_r="proto_declared" + ],[ + AC_EGREP_CPP([getprotobyname_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_getprotobyname_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_GETSERVBYPORT_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes function getservbyport_r compiler visible. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_GETSERVBYPORT_R], [ + AC_LINK_IFELSE([ + AC_LANG_FUNC_LINK_TRY([getservbyport_r]) + ],[ + tmp_getservbyport_r="yes" + ],[ + tmp_getservbyport_r="no" + ]) + if test "$tmp_getservbyport_r" = "yes"; then + AC_EGREP_CPP([getservbyport_r],[ +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_getservbyport_r="proto_declared" + ],[ + AC_EGREP_CPP([getservbyport_r],[ +#define _REENTRANT +#include <sys/types.h> +#include <netdb.h> + ],[ + tmp_getservbyport_r="proto_needs_reentrant" + tmp_need_reentrant="yes" + ]) + ]) + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_FUNCTIONS_R +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl makes several _r functions compiler visible. +dnl Internal macro for CARES_CONFIGURE_REENTRANT. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_FUNCTIONS_R], [ + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_GMTIME_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_LOCALTIME_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_STRERROR_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_STRTOK_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_INET_NTOA_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_GETSERVBYPORT_R + fi +]) + + +dnl CARES_CHECK_NEED_REENTRANT_SYSTEM +dnl ------------------------------------------------- +dnl Checks if the preprocessor _REENTRANT definition +dnl must be unconditionally done for this platform. +dnl Internal macro for CARES_CONFIGURE_REENTRANT. + +AC_DEFUN([CARES_CHECK_NEED_REENTRANT_SYSTEM], [ + case $host_os in + solaris*) + tmp_need_reentrant="yes" + ;; + *) + tmp_need_reentrant="no" + ;; + esac +]) + + +dnl CARES_CHECK_NEED_THREAD_SAFE_SYSTEM +dnl ------------------------------------------------- +dnl Checks if the preprocessor _THREAD_SAFE definition +dnl must be unconditionally done for this platform. +dnl Internal macro for CARES_CONFIGURE_THREAD_SAFE. + +AC_DEFUN([CARES_CHECK_NEED_THREAD_SAFE_SYSTEM], [ + case $host_os in + aix[[123]].* | aix4.[[012]].*) + dnl aix 4.2 and older + tmp_need_thread_safe="no" + ;; + aix*) + dnl AIX 4.3 and newer + tmp_need_thread_safe="yes" + ;; + *) + tmp_need_thread_safe="no" + ;; + esac +]) + + +dnl CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT +dnl ------------------------------------------------- +dnl This macro ensures that configuration tests done +dnl after this will execute with preprocessor symbol +dnl _REENTRANT defined. This macro also ensures that +dnl the generated config file defines NEED_REENTRANT +dnl and that in turn setup.h will define _REENTRANT. +dnl Internal macro for CARES_CONFIGURE_REENTRANT. + +AC_DEFUN([CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT], [ +AC_DEFINE(NEED_REENTRANT, 1, + [Define to 1 if _REENTRANT preprocessor symbol must be defined.]) +cat >>confdefs.h <<_EOF +#ifndef _REENTRANT +# define _REENTRANT +#endif +_EOF +]) + + +dnl CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE +dnl ------------------------------------------------- +dnl This macro ensures that configuration tests done +dnl after this will execute with preprocessor symbol +dnl _THREAD_SAFE defined. This macro also ensures that +dnl the generated config file defines NEED_THREAD_SAFE +dnl and that in turn setup.h will define _THREAD_SAFE. +dnl Internal macro for CARES_CONFIGURE_THREAD_SAFE. + +AC_DEFUN([CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE], [ +AC_DEFINE(NEED_THREAD_SAFE, 1, + [Define to 1 if _THREAD_SAFE preprocessor symbol must be defined.]) +cat >>confdefs.h <<_EOF +#ifndef _THREAD_SAFE +# define _THREAD_SAFE +#endif +_EOF +]) + + +dnl CARES_CONFIGURE_REENTRANT +dnl ------------------------------------------------- +dnl This first checks if the preprocessor _REENTRANT +dnl symbol is already defined. If it isn't currently +dnl defined a set of checks are performed to verify +dnl if its definition is required to make visible to +dnl the compiler a set of *_r functions. Finally, if +dnl _REENTRANT is already defined or needed it takes +dnl care of making adjustments necessary to ensure +dnl that it is defined equally for further configure +dnl tests and generated config file. + +AC_DEFUN([CARES_CONFIGURE_REENTRANT], [ + AC_PREREQ([2.50])dnl + # + AC_MSG_CHECKING([if _REENTRANT is already defined]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ +#ifdef _REENTRANT + int dummy=1; +#else + force compilation error +#endif + ]]) + ],[ + AC_MSG_RESULT([yes]) + tmp_reentrant_initially_defined="yes" + ],[ + AC_MSG_RESULT([no]) + tmp_reentrant_initially_defined="no" + ]) + # + if test "$tmp_reentrant_initially_defined" = "no"; then + AC_MSG_CHECKING([if _REENTRANT is actually needed]) + CARES_CHECK_NEED_REENTRANT_SYSTEM + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_ERRNO + fi + if test "$tmp_need_reentrant" = "no"; then + CARES_CHECK_NEED_REENTRANT_FUNCTIONS_R + fi + if test "$tmp_need_reentrant" = "yes"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + fi + # + AC_MSG_CHECKING([if _REENTRANT is onwards defined]) + if test "$tmp_reentrant_initially_defined" = "yes" || + test "$tmp_need_reentrant" = "yes"; then + CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + # +]) + + +dnl CARES_CONFIGURE_THREAD_SAFE +dnl ------------------------------------------------- +dnl This first checks if the preprocessor _THREAD_SAFE +dnl symbol is already defined. If it isn't currently +dnl defined a set of checks are performed to verify +dnl if its definition is required. Finally, if +dnl _THREAD_SAFE is already defined or needed it takes +dnl care of making adjustments necessary to ensure +dnl that it is defined equally for further configure +dnl tests and generated config file. + +AC_DEFUN([CARES_CONFIGURE_THREAD_SAFE], [ + AC_PREREQ([2.50])dnl + # + AC_MSG_CHECKING([if _THREAD_SAFE is already defined]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + ]],[[ +#ifdef _THREAD_SAFE + int dummy=1; +#else + force compilation error +#endif + ]]) + ],[ + AC_MSG_RESULT([yes]) + tmp_thread_safe_initially_defined="yes" + ],[ + AC_MSG_RESULT([no]) + tmp_thread_safe_initially_defined="no" + ]) + # + if test "$tmp_thread_safe_initially_defined" = "no"; then + AC_MSG_CHECKING([if _THREAD_SAFE is actually needed]) + CARES_CHECK_NEED_THREAD_SAFE_SYSTEM + if test "$tmp_need_thread_safe" = "yes"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + fi + # + AC_MSG_CHECKING([if _THREAD_SAFE is onwards defined]) + if test "$tmp_thread_safe_initially_defined" = "yes" || + test "$tmp_need_thread_safe" = "yes"; then + CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + # +]) diff --git a/m4/cares-system.m4 b/m4/cares-system.m4 new file mode 100644 index 0000000..19ea5d4 --- /dev/null +++ b/m4/cares-system.m4 @@ -0,0 +1,83 @@ +#*************************************************************************** +# $Id: cares-system.m4,v 1.3 2009-10-19 04:13:12 yangtse Exp $ +# +# Copyright (C) 2008 - 2009 by Daniel Stenberg et al +# +# Permission to use, copy, modify, and distribute this software and its +# documentation for any purpose and without fee is hereby granted, provided +# that the above copyright notice appear in all copies and that both that +# copyright notice and this permission notice appear in supporting +# documentation, and that the name of M.I.T. not be used in advertising or +# publicity pertaining to distribution of the software without specific, +# written prior permission. M.I.T. makes no representations about the +# suitability of this software for any purpose. It is provided "as is" +# without express or implied warranty. +# +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 3 + + +dnl CARES_CHECK_PATH_SEPARATOR +dnl ------------------------------------------------- +dnl Check and compute the path separator for us. This +dnl path separator is the symbol used to diferentiate +dnl or separate paths inside the PATH environment var. + +AC_DEFUN([CARES_CHECK_PATH_SEPARATOR], [ + if test -z "$cares_cv_PATH_SEPARATOR"; then + if test -z "$PATH"; then + AC_MSG_ERROR([PATH not set. Cannot continue without PATH being set.]) + fi + dnl Directory count in PATH when using a colon separator. + tst_dirs_col=0 + tst_save_IFS=$IFS; IFS=':' + for tst_dir in $PATH; do + IFS=$tst_save_IFS + test -d "$tst_dir" && tst_dirs_col=`expr $tst_dirs_col + 1` + done + IFS=$tst_save_IFS + dnl Directory count in PATH when using a semicolon separator. + tst_dirs_sem=0 + tst_save_IFS=$IFS; IFS=';' + for tst_dir in $PATH; do + IFS=$tst_save_IFS + test -d "$tst_dir" && tst_dirs_sem=`expr $tst_dirs_sem + 1` + done + IFS=$tst_save_IFS + if test $tst_dirs_sem -eq $tst_dirs_col; then + dnl When both counting methods give the same result we do not want to + dnl chose one over the other, and consider auto-detection not possible. + if test -z "$PATH_SEPARATOR"; then + dnl Stop dead until user provides PATH_SEPARATOR definition. + AC_MSG_ERROR([PATH_SEPARATOR not set. Cannot continue without it.]) + fi + else + dnl Separator with the greater directory count is the auto-detected one. + if test $tst_dirs_sem -gt $tst_dirs_col; then + tst_auto_separator=';' + else + tst_auto_separator=':' + fi + if test -z "$PATH_SEPARATOR"; then + dnl Simply use the auto-detected one when not already set. + PATH_SEPARATOR="$tst_auto_separator" + fi + fi + cares_cv_PATH_SEPARATOR="$PATH_SEPARATOR" + fi + AC_SUBST([PATH_SEPARATOR]) + AC_SUBST([PATH]) +]) + + +dnl CARES_CHECK_PATH_SEPARATOR_REQUIRED +dnl ------------------------------------------------- +dnl Use this to ensure that the path separator check +dnl macro is only expanded and included once. + +AC_DEFUN([CARES_CHECK_PATH_SEPARATOR_REQUIRED], [ + AC_REQUIRE([CARES_CHECK_PATH_SEPARATOR])dnl +]) + @@ -0,0 +1,74 @@ +#!/usr/bin/env perl + +$version = $ARGV[0]; + +if($version eq "") { + print "Enter version number!\n"; + exit; +} + +if(!-f "ares.h") { + print "run this script in the ares source root dir\n"; + exit; +} + +my ($major, $minor, $patch)=split(/\./, $version); + +$major += 0; +$minor += 0; +$patch += 0; + +open(VER, "<ares_version.h") || + die "can't open ares_version.h"; +open(NEWV, ">ares_version.h.dist"); +while(<VER>) { + $_ =~ s/^\#define ARES_VERSION_MAJOR .*/\#define ARES_VERSION_MAJOR $major/; + $_ =~ s/^\#define ARES_VERSION_MINOR .*/\#define ARES_VERSION_MINOR $minor/; + $_ =~ s/^\#define ARES_VERSION_PATCH .*/\#define ARES_VERSION_PATCH $patch/; + $_ =~ s/^\#define ARES_VERSION_STR .*/\#define ARES_VERSION_STR \"$version\"/; + + print NEWV $_; +} +close(VER); +close(NEWV); +print "ares_version.h.dist created\n"; + +if(!-f "configure") { + print "running buildconf\n"; + `./buildconf`; +} +print "adding $version in the configure.ac file\n"; +`sed -e 's/AC_INIT.*/AC_INIT([c-ares], [$version],/' < configure.ac > configure.ac.dist`; + +# now make a new configure script with this +print "makes a new configure script\n"; +`autoconf configure.ac.dist >configure`; + +# now run this new configure to get a fine makefile +print "running configure\n"; +`./configure`; + +# generate HTML versions of man pages +# Deactivated for now. It seems that man pages need some adjustments +# relative to paragraph and/or line breaks for proper html formatting. +# EXTRA_DIST will need $(HTMLPAGES) when this is fully activated. +# print "running make html\n"; +# `make -s html`; + +# generate PDF versions of man pages +print "running make pdf\n"; +`make -s pdf`; + +# now make the actual tarball +print "running make dist\n"; +`make dist VERSION=$version`; + +# remove temporay sourced man pages +`make -s clean-sourced-manpages`; + +print "removing temporary configure.ac file\n"; +`rm configure.ac.dist`; +print "removing temporary ares_version.h file\n"; +`rm ares_version.h.dist`; + +print "NOTE: now cvs tag this release!\n"; diff --git a/mkinstalldirs b/mkinstalldirs new file mode 100755 index 0000000..e1972b3 --- /dev/null +++ b/mkinstalldirs @@ -0,0 +1,40 @@ +#! /bin/sh +# mkinstalldirs --- make directory hierarchy +# Author: Noah Friedman <friedman@prep.ai.mit.edu> +# Created: 1993-05-16 +# Public domain + +# $Id: mkinstalldirs,v 1.2 2009-05-19 16:05:45 yangtse Exp $ + +errstatus=0 + +for file +do + set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'` + shift + + pathcomp= + for d + do + pathcomp="$pathcomp$d" + case "$pathcomp" in + -* ) pathcomp=./$pathcomp ;; + esac + + if test ! -d "$pathcomp"; then + echo "mkdir $pathcomp" 1>&2 + + mkdir "$pathcomp" || lasterr=$? + + if test ! -d "$pathcomp"; then + errstatus=$lasterr + fi + fi + + pathcomp="$pathcomp/" + done +done + +exit $errstatus + +# mkinstalldirs ends here diff --git a/nameser.h b/nameser.h new file mode 100644 index 0000000..db324c0 --- /dev/null +++ b/nameser.h @@ -0,0 +1,194 @@ +/* $Id: nameser.h,v 1.29 2008-09-17 01:02:57 yangtse Exp $ */ + +#ifndef ARES_NAMESER_H +#define ARES_NAMESER_H + +/* header file provided by liren@vivisimo.com */ + +#ifndef HAVE_ARPA_NAMESER_H + +#define NS_PACKETSZ 512 /* maximum packet size */ +#define NS_MAXDNAME 256 /* maximum domain name */ +#define NS_MAXCDNAME 255 /* maximum compressed domain name */ +#define NS_MAXLABEL 63 +#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ +#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ +#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ +#define NS_INT16SZ 2 +#define NS_INADDRSZ 4 +#define NS_IN6ADDRSZ 16 +#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ +#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ + +typedef enum __ns_class { + ns_c_invalid = 0, /* Cookie. */ + ns_c_in = 1, /* Internet. */ + ns_c_2 = 2, /* unallocated/unsupported. */ + ns_c_chaos = 3, /* MIT Chaos-net. */ + ns_c_hs = 4, /* MIT Hesiod. */ + /* Query class values which do not appear in resource records */ + ns_c_none = 254, /* for prereq. sections in update requests */ + ns_c_any = 255, /* Wildcard match. */ + ns_c_max = 65536 +} ns_class; + +typedef enum __ns_type { + ns_t_invalid = 0, /* Cookie. */ + ns_t_a = 1, /* Host address. */ + ns_t_ns = 2, /* Authoritative server. */ + ns_t_md = 3, /* Mail destination. */ + ns_t_mf = 4, /* Mail forwarder. */ + ns_t_cname = 5, /* Canonical name. */ + ns_t_soa = 6, /* Start of authority zone. */ + ns_t_mb = 7, /* Mailbox domain name. */ + ns_t_mg = 8, /* Mail group member. */ + ns_t_mr = 9, /* Mail rename name. */ + ns_t_null = 10, /* Null resource record. */ + ns_t_wks = 11, /* Well known service. */ + ns_t_ptr = 12, /* Domain name pointer. */ + ns_t_hinfo = 13, /* Host information. */ + ns_t_minfo = 14, /* Mailbox information. */ + ns_t_mx = 15, /* Mail routing information. */ + ns_t_txt = 16, /* Text strings. */ + ns_t_rp = 17, /* Responsible person. */ + ns_t_afsdb = 18, /* AFS cell database. */ + ns_t_x25 = 19, /* X_25 calling address. */ + ns_t_isdn = 20, /* ISDN calling address. */ + ns_t_rt = 21, /* Router. */ + ns_t_nsap = 22, /* NSAP address. */ + ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ + ns_t_sig = 24, /* Security signature. */ + ns_t_key = 25, /* Security key. */ + ns_t_px = 26, /* X.400 mail mapping. */ + ns_t_gpos = 27, /* Geographical position (withdrawn). */ + ns_t_aaaa = 28, /* Ip6 Address. */ + ns_t_loc = 29, /* Location Information. */ + ns_t_nxt = 30, /* Next domain (security). */ + ns_t_eid = 31, /* Endpoint identifier. */ + ns_t_nimloc = 32, /* Nimrod Locator. */ + ns_t_srv = 33, /* Server Selection. */ + ns_t_atma = 34, /* ATM Address */ + ns_t_naptr = 35, /* Naming Authority PoinTeR */ + ns_t_kx = 36, /* Key Exchange */ + ns_t_cert = 37, /* Certification record */ + ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ + ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ + ns_t_sink = 40, /* Kitchen sink (experimentatl) */ + ns_t_opt = 41, /* EDNS0 option (meta-RR) */ + ns_t_apl = 42, /* Address prefix list (RFC3123) */ + ns_t_tkey = 249, /* Transaction key */ + ns_t_tsig = 250, /* Transaction signature. */ + ns_t_ixfr = 251, /* Incremental zone transfer. */ + ns_t_axfr = 252, /* Transfer zone of authority. */ + ns_t_mailb = 253, /* Transfer mailbox records. */ + ns_t_maila = 254, /* Transfer mail agent records. */ + ns_t_any = 255, /* Wildcard match. */ + ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ + ns_t_max = 65536 +} ns_type; + +typedef enum __ns_opcode { + ns_o_query = 0, /* Standard query. */ + ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ + ns_o_status = 2, /* Name server status query (unsupported). */ + /* Opcode 3 is undefined/reserved. */ + ns_o_notify = 4, /* Zone change notification. */ + ns_o_update = 5, /* Zone update message. */ + ns_o_max = 6 +} ns_opcode; + +typedef enum __ns_rcode { + ns_r_noerror = 0, /* No error occurred. */ + ns_r_formerr = 1, /* Format error. */ + ns_r_servfail = 2, /* Server failure. */ + ns_r_nxdomain = 3, /* Name error. */ + ns_r_notimpl = 4, /* Unimplemented. */ + ns_r_refused = 5, /* Operation refused. */ + /* these are for BIND_UPDATE */ + ns_r_yxdomain = 6, /* Name exists */ + ns_r_yxrrset = 7, /* RRset exists */ + ns_r_nxrrset = 8, /* RRset does not exist */ + ns_r_notauth = 9, /* Not authoritative for zone */ + ns_r_notzone = 10, /* Zone of record different from zone section */ + ns_r_max = 11, + /* The following are TSIG extended errors */ + ns_r_badsig = 16, + ns_r_badkey = 17, + ns_r_badtime = 18 +} ns_rcode; + +#endif /* HAVE_ARPA_NAMESER_H */ + +#ifndef HAVE_ARPA_NAMESER_COMPAT_H + +#define PACKETSZ NS_PACKETSZ +#define MAXDNAME NS_MAXDNAME +#define MAXCDNAME NS_MAXCDNAME +#define MAXLABEL NS_MAXLABEL +#define HFIXEDSZ NS_HFIXEDSZ +#define QFIXEDSZ NS_QFIXEDSZ +#define RRFIXEDSZ NS_RRFIXEDSZ +#define INDIR_MASK NS_CMPRSFLGS +#define NAMESERVER_PORT NS_DEFAULTPORT + +#define QUERY ns_o_query + +#define SERVFAIL ns_r_servfail +#define NOTIMP ns_r_notimpl +#define REFUSED ns_r_refused +#undef NOERROR /* it seems this is already defined in winerror.h */ +#define NOERROR ns_r_noerror +#define FORMERR ns_r_formerr +#define NXDOMAIN ns_r_nxdomain + +#define C_IN ns_c_in +#define C_CHAOS ns_c_chaos +#define C_HS ns_c_hs +#define C_NONE ns_c_none +#define C_ANY ns_c_any + +#define T_A ns_t_a +#define T_NS ns_t_ns +#define T_MD ns_t_md +#define T_MF ns_t_mf +#define T_CNAME ns_t_cname +#define T_SOA ns_t_soa +#define T_MB ns_t_mb +#define T_MG ns_t_mg +#define T_MR ns_t_mr +#define T_NULL ns_t_null +#define T_WKS ns_t_wks +#define T_PTR ns_t_ptr +#define T_HINFO ns_t_hinfo +#define T_MINFO ns_t_minfo +#define T_MX ns_t_mx +#define T_TXT ns_t_txt +#define T_RP ns_t_rp +#define T_AFSDB ns_t_afsdb +#define T_X25 ns_t_x25 +#define T_ISDN ns_t_isdn +#define T_RT ns_t_rt +#define T_NSAP ns_t_nsap +#define T_NSAP_PTR ns_t_nsap_ptr +#define T_SIG ns_t_sig +#define T_KEY ns_t_key +#define T_PX ns_t_px +#define T_GPOS ns_t_gpos +#define T_AAAA ns_t_aaaa +#define T_LOC ns_t_loc +#define T_NXT ns_t_nxt +#define T_EID ns_t_eid +#define T_NIMLOC ns_t_nimloc +#define T_SRV ns_t_srv +#define T_ATMA ns_t_atma +#define T_NAPTR ns_t_naptr +#define T_TSIG ns_t_tsig +#define T_IXFR ns_t_ixfr +#define T_AXFR ns_t_axfr +#define T_MAILB ns_t_mailb +#define T_MAILA ns_t_maila +#define T_ANY ns_t_any + +#endif /* HAVE_ARPA_NAMESER_COMPAT_H */ + +#endif /* ARES_NAMESER_H */ diff --git a/setup_once.h b/setup_once.h new file mode 100644 index 0000000..36d9451 --- /dev/null +++ b/setup_once.h @@ -0,0 +1,444 @@ +#ifndef __SETUP_ONCE_H +#define __SETUP_ONCE_H + +/* $Id: setup_once.h,v 1.37 2009-12-30 17:59:56 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +/******************************************************************** + * NOTICE * + * ======== * + * * + * Content of header files lib/setup_once.h and ares/setup_once.h * + * must be kept in sync. Modify the other one if you change this. * + * * + ********************************************************************/ + + +/* + * Inclusion of common header files. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <errno.h> + +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif + +#ifdef NEED_MALLOC_H +#include <malloc.h> +#endif + +#ifdef NEED_MEMORY_H +#include <memory.h> +#endif + +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + +#ifdef WIN32 +#include <io.h> +#include <fcntl.h> +#endif + +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#endif + + +/* + * Definition of timeval struct for platforms that don't have it. + */ + +#ifndef HAVE_STRUCT_TIMEVAL +struct timeval { + long tv_sec; + long tv_usec; +}; +#endif + + +/* + * If we have the MSG_NOSIGNAL define, make sure we use + * it as the fourth argument of function send() + */ + +#ifdef HAVE_MSG_NOSIGNAL +#define SEND_4TH_ARG MSG_NOSIGNAL +#else +#define SEND_4TH_ARG 0 +#endif + + +#if defined(__minix) +/* Minix doesn't support recv on TCP sockets */ +#define sread(x,y,z) (ssize_t)read((RECV_TYPE_ARG1)(x), \ + (RECV_TYPE_ARG2)(y), \ + (RECV_TYPE_ARG3)(z)) + +#elif defined(HAVE_RECV) +/* + * The definitions for the return type and arguments types + * of functions recv() and send() belong and come from the + * configuration file. Do not define them in any other place. + * + * HAVE_RECV is defined if you have a function named recv() + * which is used to read incoming data from sockets. If your + * function has another name then don't define HAVE_RECV. + * + * If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2, + * RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also + * be defined. + * + * HAVE_SEND is defined if you have a function named send() + * which is used to write outgoing data on a connected socket. + * If yours has another name then don't define HAVE_SEND. + * + * If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_QUAL_ARG2, + * SEND_TYPE_ARG2, SEND_TYPE_ARG3, SEND_TYPE_ARG4 and + * SEND_TYPE_RETV must also be defined. + */ + +#if !defined(RECV_TYPE_ARG1) || \ + !defined(RECV_TYPE_ARG2) || \ + !defined(RECV_TYPE_ARG3) || \ + !defined(RECV_TYPE_ARG4) || \ + !defined(RECV_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_recv + /* */ +#else +#define sread(x,y,z) (ssize_t)recv((RECV_TYPE_ARG1)(x), \ + (RECV_TYPE_ARG2)(y), \ + (RECV_TYPE_ARG3)(z), \ + (RECV_TYPE_ARG4)(0)) +#endif +#else /* HAVE_RECV */ +#ifndef sread + /* */ + Error Missing_definition_of_macro_sread + /* */ +#endif +#endif /* HAVE_RECV */ + + +#if defined(__minix) +/* Minix doesn't support send on TCP sockets */ +#define swrite(x,y,z) (ssize_t)write((SEND_TYPE_ARG1)(x), \ + (SEND_TYPE_ARG2)(y), \ + (SEND_TYPE_ARG3)(z)) + +#elif defined(HAVE_SEND) +#if !defined(SEND_TYPE_ARG1) || \ + !defined(SEND_QUAL_ARG2) || \ + !defined(SEND_TYPE_ARG2) || \ + !defined(SEND_TYPE_ARG3) || \ + !defined(SEND_TYPE_ARG4) || \ + !defined(SEND_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_send + /* */ +#else +#define swrite(x,y,z) (ssize_t)send((SEND_TYPE_ARG1)(x), \ + (SEND_TYPE_ARG2)(y), \ + (SEND_TYPE_ARG3)(z), \ + (SEND_TYPE_ARG4)(SEND_4TH_ARG)) +#endif +#else /* HAVE_SEND */ +#ifndef swrite + /* */ + Error Missing_definition_of_macro_swrite + /* */ +#endif +#endif /* HAVE_SEND */ + + +#if 0 +#if defined(HAVE_RECVFROM) +/* + * Currently recvfrom is only used on udp sockets. + */ +#if !defined(RECVFROM_TYPE_ARG1) || \ + !defined(RECVFROM_TYPE_ARG2) || \ + !defined(RECVFROM_TYPE_ARG3) || \ + !defined(RECVFROM_TYPE_ARG4) || \ + !defined(RECVFROM_TYPE_ARG5) || \ + !defined(RECVFROM_TYPE_ARG6) || \ + !defined(RECVFROM_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_recvfrom + /* */ +#else +#define sreadfrom(s,b,bl,f,fl) (ssize_t)recvfrom((RECVFROM_TYPE_ARG1) (s), \ + (RECVFROM_TYPE_ARG2 *)(b), \ + (RECVFROM_TYPE_ARG3) (bl), \ + (RECVFROM_TYPE_ARG4) (0), \ + (RECVFROM_TYPE_ARG5 *)(f), \ + (RECVFROM_TYPE_ARG6 *)(fl)) +#endif +#else /* HAVE_RECVFROM */ +#ifndef sreadfrom + /* */ + Error Missing_definition_of_macro_sreadfrom + /* */ +#endif +#endif /* HAVE_RECVFROM */ + + +#ifdef RECVFROM_TYPE_ARG6_IS_VOID +# define RECVFROM_ARG6_T int +#else +# define RECVFROM_ARG6_T RECVFROM_TYPE_ARG6 +#endif +#endif /* if 0 */ + + +/* + * Function-like macro definition used to close a socket. + */ + +#if defined(HAVE_CLOSESOCKET) +# define sclose(x) closesocket((x)) +#elif defined(HAVE_CLOSESOCKET_CAMEL) +# define sclose(x) CloseSocket((x)) +#else +# define sclose(x) close((x)) +#endif + + +/* + * Uppercase macro versions of ANSI/ISO is*() functions/macros which + * avoid negative number inputs with argument byte codes > 127. + */ + +#define ISSPACE(x) (isspace((int) ((unsigned char)x))) +#define ISDIGIT(x) (isdigit((int) ((unsigned char)x))) +#define ISALNUM(x) (isalnum((int) ((unsigned char)x))) +#define ISXDIGIT(x) (isxdigit((int) ((unsigned char)x))) +#define ISGRAPH(x) (isgraph((int) ((unsigned char)x))) +#define ISALPHA(x) (isalpha((int) ((unsigned char)x))) +#define ISPRINT(x) (isprint((int) ((unsigned char)x))) +#define ISUPPER(x) (isupper((int) ((unsigned char)x))) +#define ISLOWER(x) (islower((int) ((unsigned char)x))) + +#define ISBLANK(x) (int)((((unsigned char)x) == ' ') || \ + (((unsigned char)x) == '\t')) + + +/* + * Typedef to 'unsigned char' if bool is not an available 'typedefed' type. + */ + +#ifndef HAVE_BOOL_T +typedef unsigned char bool; +#define HAVE_BOOL_T +#endif + + +/* + * Default definition of uppercase TRUE and FALSE. + */ + +#ifndef TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif + + +/* + * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type. + */ + +#ifndef HAVE_SIG_ATOMIC_T +typedef int sig_atomic_t; +#define HAVE_SIG_ATOMIC_T +#endif + + +/* + * Convenience SIG_ATOMIC_T definition + */ + +#ifdef HAVE_SIG_ATOMIC_T_VOLATILE +#define SIG_ATOMIC_T static sig_atomic_t +#else +#define SIG_ATOMIC_T static volatile sig_atomic_t +#endif + + +/* + * Default return type for signal handlers. + */ + +#ifndef RETSIGTYPE +#define RETSIGTYPE void +#endif + + +/* + * Macro used to include code only in debug builds. + */ + +#ifdef DEBUGBUILD +#define DEBUGF(x) x +#else +#define DEBUGF(x) do { } while (0) +#endif + + +/* + * Macro used to include assertion code only in debug builds. + */ + +#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H) +#define DEBUGASSERT(x) assert(x) +#else +#define DEBUGASSERT(x) do { } while (0) +#endif + + +/* + * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno + * (or equivalent) on this platform to hide platform details to code using it. + */ + +#ifdef USE_WINSOCK +#define SOCKERRNO ((int)WSAGetLastError()) +#define SET_SOCKERRNO(x) (WSASetLastError((int)(x))) +#else +#define SOCKERRNO (errno) +#define SET_SOCKERRNO(x) (errno = (x)) +#endif + + +/* + * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno + * (or equivalent) on this platform to hide platform details to code using it. + */ + +#ifdef WIN32 +#define ERRNO ((int)GetLastError()) +#define SET_ERRNO(x) (SetLastError((DWORD)(x))) +#else +#define ERRNO (errno) +#define SET_ERRNO(x) (errno = (x)) +#endif + + +/* + * Portable error number symbolic names defined to Winsock error codes. + */ + +#ifdef USE_WINSOCK +#undef EBADF /* override definition in errno.h */ +#define EBADF WSAEBADF +#undef EINTR /* override definition in errno.h */ +#define EINTR WSAEINTR +#undef EINVAL /* override definition in errno.h */ +#define EINVAL WSAEINVAL +#define EWOULDBLOCK WSAEWOULDBLOCK +#define EINPROGRESS WSAEINPROGRESS +#define EALREADY WSAEALREADY +#define ENOTSOCK WSAENOTSOCK +#define EDESTADDRREQ WSAEDESTADDRREQ +#define EMSGSIZE WSAEMSGSIZE +#define EPROTOTYPE WSAEPROTOTYPE +#define ENOPROTOOPT WSAENOPROTOOPT +#define EPROTONOSUPPORT WSAEPROTONOSUPPORT +#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT +#define EOPNOTSUPP WSAEOPNOTSUPP +#define EPFNOSUPPORT WSAEPFNOSUPPORT +#define EAFNOSUPPORT WSAEAFNOSUPPORT +#define EADDRINUSE WSAEADDRINUSE +#define EADDRNOTAVAIL WSAEADDRNOTAVAIL +#define ENETDOWN WSAENETDOWN +#define ENETUNREACH WSAENETUNREACH +#define ENETRESET WSAENETRESET +#define ECONNABORTED WSAECONNABORTED +#define ECONNRESET WSAECONNRESET +#define ENOBUFS WSAENOBUFS +#define EISCONN WSAEISCONN +#define ENOTCONN WSAENOTCONN +#define ESHUTDOWN WSAESHUTDOWN +#define ETOOMANYREFS WSAETOOMANYREFS +#define ETIMEDOUT WSAETIMEDOUT +#define ECONNREFUSED WSAECONNREFUSED +#define ELOOP WSAELOOP +#ifndef ENAMETOOLONG /* possible previous definition in errno.h */ +#define ENAMETOOLONG WSAENAMETOOLONG +#endif +#define EHOSTDOWN WSAEHOSTDOWN +#define EHOSTUNREACH WSAEHOSTUNREACH +#ifndef ENOTEMPTY /* possible previous definition in errno.h */ +#define ENOTEMPTY WSAENOTEMPTY +#endif +#define EPROCLIM WSAEPROCLIM +#define EUSERS WSAEUSERS +#define EDQUOT WSAEDQUOT +#define ESTALE WSAESTALE +#define EREMOTE WSAEREMOTE +#endif + + +/* + * Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid() + */ + +#if defined(__VMS) && \ + defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64) +#define getpwuid __32_getpwuid +#endif + + +/* + * Macro argv_item_t hides platform details to code using it. + */ + +#ifdef __VMS +#define argv_item_t __char_ptr32 +#else +#define argv_item_t char * +#endif + + +/* + * We use this ZERO_NULL to avoid picky compiler warnings, + * when assigning a NULL pointer to a function pointer var. + */ + +#define ZERO_NULL 0 + + +#endif /* __SETUP_ONCE_H */ + diff --git a/vc/.cvsignore b/vc/.cvsignore new file mode 100644 index 0000000..de8d838 --- /dev/null +++ b/vc/.cvsignore @@ -0,0 +1,4 @@ +vc.ncb +vc.opt +vc6aws.ncb +vc6aws.opt diff --git a/vc/CVS/Entries b/vc/CVS/Entries new file mode 100644 index 0000000..550608a --- /dev/null +++ b/vc/CVS/Entries @@ -0,0 +1,3 @@ +/.cvsignore/1.2/Thu Oct 29 18:30:38 2009// +/vc6aws.dsw/1.1/Thu Oct 29 17:52:56 2009// +D diff --git a/vc/CVS/Entries.Log b/vc/CVS/Entries.Log new file mode 100644 index 0000000..3dfd844 --- /dev/null +++ b/vc/CVS/Entries.Log @@ -0,0 +1,5 @@ +A D/acountry//// +A D/adig//// +A D/ahost//// +A D/areslib//// +A D/cares//// diff --git a/vc/CVS/Repository b/vc/CVS/Repository new file mode 100644 index 0000000..7b30817 --- /dev/null +++ b/vc/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc diff --git a/vc/CVS/Root b/vc/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/CVS/Template b/vc/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/CVS/Template diff --git a/vc/acountry/.cvsignore b/vc/acountry/.cvsignore new file mode 100644 index 0000000..323c03b --- /dev/null +++ b/vc/acountry/.cvsignore @@ -0,0 +1,12 @@ +DLL-* +Debug +LIB-* +Release +acountry.dep +acountry.mak +acountry.plg +dll-* +lib-* +vc6acountry.dep +vc6acountry.mak +vc6acountry.plg diff --git a/vc/acountry/CVS/Entries b/vc/acountry/CVS/Entries new file mode 100644 index 0000000..6f8b5f2 --- /dev/null +++ b/vc/acountry/CVS/Entries @@ -0,0 +1,3 @@ +/.cvsignore/1.5/Tue Nov 10 20:05:10 2009// +/vc6acountry.dsp/1.5/Mon Nov 23 11:05:47 2009// +D diff --git a/vc/acountry/CVS/Repository b/vc/acountry/CVS/Repository new file mode 100644 index 0000000..373983b --- /dev/null +++ b/vc/acountry/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/acountry diff --git a/vc/acountry/CVS/Root b/vc/acountry/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/acountry/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/acountry/CVS/Template b/vc/acountry/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/acountry/CVS/Template diff --git a/vc/acountry/vc6acountry.dsp b/vc/acountry/vc6acountry.dsp new file mode 100644 index 0000000..e9d4970 --- /dev/null +++ b/vc/acountry/vc6acountry.dsp @@ -0,0 +1,170 @@ +# Microsoft Developer Studio Project File - Name="acountry" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=acountry - Win32 using cares LIB Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "vc6acountry.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "vc6acountry.mak" CFG="acountry - Win32 using cares LIB Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "acountry - Win32 using cares DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "acountry - Win32 using cares DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "acountry - Win32 using cares LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "acountry - Win32 using cares LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "acountry - Win32 using cares DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "dll-debug"
+# PROP BASE Intermediate_Dir "dll-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "dll-debug"
+# PROP Intermediate_Dir "dll-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/acountry.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+# ADD LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/acountry.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "acountry - Win32 using cares DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "dll-release"
+# PROP BASE Intermediate_Dir "dll-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "dll-release"
+# PROP Intermediate_Dir "dll-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/acountry.exe" /libpath:"..\cares\dll-release" /fixed:no
+# ADD LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/acountry.exe" /libpath:"..\cares\dll-release" /fixed:no
+
+!ELSEIF "$(CFG)" == "acountry - Win32 using cares LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "lib-debug"
+# PROP BASE Intermediate_Dir "lib-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "lib-debug"
+# PROP Intermediate_Dir "lib-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/acountry.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+# ADD LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/acountry.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "acountry - Win32 using cares LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "lib-release"
+# PROP BASE Intermediate_Dir "lib-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "lib-release"
+# PROP Intermediate_Dir "lib-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/acountry.exe" /libpath:"..\cares\lib-release" /fixed:no
+# ADD LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/acountry.exe" /libpath:"..\cares\lib-release" /fixed:no
+
+!ENDIF
+
+# Begin Target
+
+# Name "acountry - Win32 using cares DLL Debug"
+# Name "acountry - Win32 using cares DLL Release"
+# Name "acountry - Win32 using cares LIB Debug"
+# Name "acountry - Win32 using cares LIB Release"
+# Begin Group "Source Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\acountry.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strcasecmp.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_net_pton.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_ntop.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.h
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/vc/adig/.cvsignore b/vc/adig/.cvsignore new file mode 100644 index 0000000..4d96e30 --- /dev/null +++ b/vc/adig/.cvsignore @@ -0,0 +1,10 @@ +DLL-* +LIB-* +adig.dep +adig.mak +adig.plg +dll-* +lib-* +vc6adig.dep +vc6adig.mak +vc6adig.plg diff --git a/vc/adig/CVS/Entries b/vc/adig/CVS/Entries new file mode 100644 index 0000000..a2e177e --- /dev/null +++ b/vc/adig/CVS/Entries @@ -0,0 +1,3 @@ +/.cvsignore/1.6/Tue Nov 10 20:05:11 2009// +/vc6adig.dsp/1.5/Mon Nov 23 11:05:47 2009// +D diff --git a/vc/adig/CVS/Entries.Log b/vc/adig/CVS/Entries.Log new file mode 100644 index 0000000..68d4d72 --- /dev/null +++ b/vc/adig/CVS/Entries.Log @@ -0,0 +1,2 @@ +A D/Debug//// +A D/Release//// diff --git a/vc/adig/CVS/Repository b/vc/adig/CVS/Repository new file mode 100644 index 0000000..1464303 --- /dev/null +++ b/vc/adig/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/adig diff --git a/vc/adig/CVS/Root b/vc/adig/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/adig/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/adig/CVS/Template b/vc/adig/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/adig/CVS/Template diff --git a/vc/adig/Debug/CVS/Entries b/vc/adig/Debug/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/adig/Debug/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/adig/Debug/CVS/Repository b/vc/adig/Debug/CVS/Repository new file mode 100644 index 0000000..3192817 --- /dev/null +++ b/vc/adig/Debug/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/adig/Debug diff --git a/vc/adig/Debug/CVS/Root b/vc/adig/Debug/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/adig/Debug/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/adig/Debug/CVS/Template b/vc/adig/Debug/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/adig/Debug/CVS/Template diff --git a/vc/adig/Release/CVS/Entries b/vc/adig/Release/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/adig/Release/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/adig/Release/CVS/Repository b/vc/adig/Release/CVS/Repository new file mode 100644 index 0000000..1535397 --- /dev/null +++ b/vc/adig/Release/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/adig/Release diff --git a/vc/adig/Release/CVS/Root b/vc/adig/Release/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/adig/Release/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/adig/Release/CVS/Template b/vc/adig/Release/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/adig/Release/CVS/Template diff --git a/vc/adig/vc6adig.dsp b/vc/adig/vc6adig.dsp new file mode 100644 index 0000000..913d5d9 --- /dev/null +++ b/vc/adig/vc6adig.dsp @@ -0,0 +1,170 @@ +# Microsoft Developer Studio Project File - Name="adig" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=adig - Win32 using cares LIB Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "vc6adig.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "vc6adig.mak" CFG="adig - Win32 using cares LIB Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "adig - Win32 using cares DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "adig - Win32 using cares DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "adig - Win32 using cares LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "adig - Win32 using cares LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "adig - Win32 using cares DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "dll-debug"
+# PROP BASE Intermediate_Dir "dll-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "dll-debug"
+# PROP Intermediate_Dir "dll-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/adig.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+# ADD LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/adig.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "adig - Win32 using cares DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "dll-release"
+# PROP BASE Intermediate_Dir "dll-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "dll-release"
+# PROP Intermediate_Dir "dll-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/adig.exe" /libpath:"..\cares\dll-release" /fixed:no
+# ADD LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/adig.exe" /libpath:"..\cares\dll-release" /fixed:no
+
+!ELSEIF "$(CFG)" == "adig - Win32 using cares LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "lib-debug"
+# PROP BASE Intermediate_Dir "lib-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "lib-debug"
+# PROP Intermediate_Dir "lib-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/adig.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+# ADD LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/adig.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "adig - Win32 using cares LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "lib-release"
+# PROP BASE Intermediate_Dir "lib-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "lib-release"
+# PROP Intermediate_Dir "lib-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/adig.exe" /libpath:"..\cares\lib-release" /fixed:no
+# ADD LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/adig.exe" /libpath:"..\cares\lib-release" /fixed:no
+
+!ENDIF
+
+# Begin Target
+
+# Name "adig - Win32 using cares DLL Debug"
+# Name "adig - Win32 using cares DLL Release"
+# Name "adig - Win32 using cares LIB Debug"
+# Name "adig - Win32 using cares LIB Release"
+# Begin Group "Source Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\adig.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strcasecmp.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_net_pton.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_ntop.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.h
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/vc/ahost/.cvsignore b/vc/ahost/.cvsignore new file mode 100644 index 0000000..e510380 --- /dev/null +++ b/vc/ahost/.cvsignore @@ -0,0 +1,10 @@ +DLL-* +LIB-* +ahost.dep +ahost.mak +ahost.plg +dll-* +lib-* +vc6ahost.dep +vc6ahost.mak +vc6ahost.plg diff --git a/vc/ahost/CVS/Entries b/vc/ahost/CVS/Entries new file mode 100644 index 0000000..85616a9 --- /dev/null +++ b/vc/ahost/CVS/Entries @@ -0,0 +1,3 @@ +/.cvsignore/1.6/Tue Nov 10 20:05:11 2009// +/vc6ahost.dsp/1.5/Mon Nov 23 11:05:47 2009// +D diff --git a/vc/ahost/CVS/Entries.Log b/vc/ahost/CVS/Entries.Log new file mode 100644 index 0000000..68d4d72 --- /dev/null +++ b/vc/ahost/CVS/Entries.Log @@ -0,0 +1,2 @@ +A D/Debug//// +A D/Release//// diff --git a/vc/ahost/CVS/Repository b/vc/ahost/CVS/Repository new file mode 100644 index 0000000..9bfc03b --- /dev/null +++ b/vc/ahost/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/ahost diff --git a/vc/ahost/CVS/Root b/vc/ahost/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/ahost/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/ahost/CVS/Template b/vc/ahost/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/ahost/CVS/Template diff --git a/vc/ahost/Debug/CVS/Entries b/vc/ahost/Debug/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/ahost/Debug/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/ahost/Debug/CVS/Repository b/vc/ahost/Debug/CVS/Repository new file mode 100644 index 0000000..f70fec1 --- /dev/null +++ b/vc/ahost/Debug/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/ahost/Debug diff --git a/vc/ahost/Debug/CVS/Root b/vc/ahost/Debug/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/ahost/Debug/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/ahost/Debug/CVS/Template b/vc/ahost/Debug/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/ahost/Debug/CVS/Template diff --git a/vc/ahost/Release/CVS/Entries b/vc/ahost/Release/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/ahost/Release/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/ahost/Release/CVS/Repository b/vc/ahost/Release/CVS/Repository new file mode 100644 index 0000000..14132c4 --- /dev/null +++ b/vc/ahost/Release/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/ahost/Release diff --git a/vc/ahost/Release/CVS/Root b/vc/ahost/Release/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/ahost/Release/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/ahost/Release/CVS/Template b/vc/ahost/Release/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/ahost/Release/CVS/Template diff --git a/vc/ahost/vc6ahost.dsp b/vc/ahost/vc6ahost.dsp new file mode 100644 index 0000000..64d3728 --- /dev/null +++ b/vc/ahost/vc6ahost.dsp @@ -0,0 +1,170 @@ +# Microsoft Developer Studio Project File - Name="ahost" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Console Application" 0x0103
+
+CFG=ahost - Win32 using cares LIB Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "vc6ahost.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "vc6ahost.mak" CFG="ahost - Win32 using cares LIB Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "ahost - Win32 using cares DLL Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "ahost - Win32 using cares DLL Release" (based on "Win32 (x86) Console Application")
+!MESSAGE "ahost - Win32 using cares LIB Debug" (based on "Win32 (x86) Console Application")
+!MESSAGE "ahost - Win32 using cares LIB Release" (based on "Win32 (x86) Console Application")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "ahost - Win32 using cares DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "dll-debug"
+# PROP BASE Intermediate_Dir "dll-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "dll-debug"
+# PROP Intermediate_Dir "dll-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/ahost.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+# ADD LINK32 caresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"dll-debug/ahost.exe" /pdbtype:con /libpath:"..\cares\dll-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "ahost - Win32 using cares DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "dll-release"
+# PROP BASE Intermediate_Dir "dll-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "dll-release"
+# PROP Intermediate_Dir "dll-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/ahost.exe" /libpath:"..\cares\dll-release" /fixed:no
+# ADD LINK32 cares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"dll-release/ahost.exe" /libpath:"..\cares\dll-release" /fixed:no
+
+!ELSEIF "$(CFG)" == "ahost - Win32 using cares LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "lib-debug"
+# PROP BASE Intermediate_Dir "lib-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "lib-debug"
+# PROP Intermediate_Dir "lib-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/ahost.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+# ADD LINK32 libcaresd.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /incremental:no /debug /machine:I386 /out:"lib-debug/ahost.exe" /pdbtype:con /libpath:"..\cares\lib-debug" /fixed:no
+
+!ELSEIF "$(CFG)" == "ahost - Win32 using cares LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "lib-release"
+# PROP BASE Intermediate_Dir "lib-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "lib-release"
+# PROP Intermediate_Dir "lib-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "CARES_STATICLIB" /FD /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/ahost.exe" /libpath:"..\cares\lib-release" /fixed:no
+# ADD LINK32 libcares.lib ws2_32.lib advapi32.lib kernel32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"lib-release/ahost.exe" /libpath:"..\cares\lib-release" /fixed:no
+
+!ENDIF
+
+# Begin Target
+
+# Name "ahost - Win32 using cares DLL Debug"
+# Name "ahost - Win32 using cares DLL Release"
+# Name "ahost - Win32 using cares LIB Debug"
+# Name "ahost - Win32 using cares LIB Release"
+# Begin Group "Source Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ahost.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strcasecmp.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_net_pton.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_ntop.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ares_getopt.h
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/vc/areslib/CVS/Entries b/vc/areslib/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/areslib/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/areslib/CVS/Entries.Log b/vc/areslib/CVS/Entries.Log new file mode 100644 index 0000000..68d4d72 --- /dev/null +++ b/vc/areslib/CVS/Entries.Log @@ -0,0 +1,2 @@ +A D/Debug//// +A D/Release//// diff --git a/vc/areslib/CVS/Repository b/vc/areslib/CVS/Repository new file mode 100644 index 0000000..c7c8920 --- /dev/null +++ b/vc/areslib/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/areslib diff --git a/vc/areslib/CVS/Root b/vc/areslib/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/areslib/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/areslib/CVS/Template b/vc/areslib/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/areslib/CVS/Template diff --git a/vc/areslib/Debug/CVS/Entries b/vc/areslib/Debug/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/areslib/Debug/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/areslib/Debug/CVS/Repository b/vc/areslib/Debug/CVS/Repository new file mode 100644 index 0000000..fd597c1 --- /dev/null +++ b/vc/areslib/Debug/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/areslib/Debug diff --git a/vc/areslib/Debug/CVS/Root b/vc/areslib/Debug/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/areslib/Debug/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/areslib/Debug/CVS/Template b/vc/areslib/Debug/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/areslib/Debug/CVS/Template diff --git a/vc/areslib/Release/CVS/Entries b/vc/areslib/Release/CVS/Entries new file mode 100644 index 0000000..1784810 --- /dev/null +++ b/vc/areslib/Release/CVS/Entries @@ -0,0 +1 @@ +D diff --git a/vc/areslib/Release/CVS/Repository b/vc/areslib/Release/CVS/Repository new file mode 100644 index 0000000..01219c2 --- /dev/null +++ b/vc/areslib/Release/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/areslib/Release diff --git a/vc/areslib/Release/CVS/Root b/vc/areslib/Release/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/areslib/Release/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/areslib/Release/CVS/Template b/vc/areslib/Release/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/areslib/Release/CVS/Template diff --git a/vc/cares/.cvsignore b/vc/cares/.cvsignore new file mode 100644 index 0000000..63a0880 --- /dev/null +++ b/vc/cares/.cvsignore @@ -0,0 +1,9 @@ +DLL-* +LIB-* +dll-* +lib-* +vc6cares.dep +vc6cares.mak +vc6cares.ncb +vc6cares.opt +vc6cares.plg diff --git a/vc/cares/CVS/Entries b/vc/cares/CVS/Entries new file mode 100644 index 0000000..6a05355 --- /dev/null +++ b/vc/cares/CVS/Entries @@ -0,0 +1,4 @@ +/.cvsignore/1.2/Tue Nov 10 20:05:11 2009// +/vc6cares.dsp/1.6/Mon Nov 23 11:05:48 2009// +/vc6cares.dsw/1.1/Thu Oct 29 17:52:57 2009// +D diff --git a/vc/cares/CVS/Repository b/vc/cares/CVS/Repository new file mode 100644 index 0000000..b5c1f1e --- /dev/null +++ b/vc/cares/CVS/Repository @@ -0,0 +1 @@ +curl/ares/vc/cares diff --git a/vc/cares/CVS/Root b/vc/cares/CVS/Root new file mode 100644 index 0000000..2b0bfa7 --- /dev/null +++ b/vc/cares/CVS/Root @@ -0,0 +1 @@ +:pserver:anonymous@cool.haxx.se:/cvsroot/curl diff --git a/vc/cares/CVS/Template b/vc/cares/CVS/Template new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/vc/cares/CVS/Template diff --git a/vc/cares/vc6cares.dsp b/vc/cares/vc6cares.dsp new file mode 100644 index 0000000..b7c50c6 --- /dev/null +++ b/vc/cares/vc6cares.dsp @@ -0,0 +1,381 @@ +# Microsoft Developer Studio Project File - Name="cares" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=cares - Win32 LIB Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "vc6cares.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "vc6cares.mak" CFG="cares - Win32 LIB Debug"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "cares - Win32 DLL Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "cares - Win32 DLL Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "cares - Win32 LIB Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE "cares - Win32 LIB Release" (based on "Win32 (x86) Static Library")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+
+!IF "$(CFG)" == "cares - Win32 DLL Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "dll-debug"
+# PROP BASE Intermediate_Dir "dll-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "dll-debug"
+# PROP Intermediate_Dir "dll-debug/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "DEBUGBUILD" /D "CARES_BUILDING_LIBRARY" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "DEBUGBUILD" /D "CARES_BUILDING_LIBRARY" /FD /GZ /c
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "_DEBUG" /win32
+# ADD MTL /nologo /D "_DEBUG" /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 ws2_32.lib advapi32.lib kernel32.lib /nologo /dll /incremental:no /debug /machine:I386 /out:"dll-debug/caresd.dll" /implib:"dll-debug/caresd.lib" /pdbtype:con /fixed:no
+# ADD LINK32 ws2_32.lib advapi32.lib kernel32.lib /nologo /dll /incremental:no /debug /machine:I386 /out:"dll-debug/caresd.dll" /implib:"dll-debug/caresd.lib" /pdbtype:con /fixed:no
+
+!ELSEIF "$(CFG)" == "cares - Win32 DLL Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "dll-release"
+# PROP BASE Intermediate_Dir "dll-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "dll-release"
+# PROP Intermediate_Dir "dll-release/obj"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "CARES_BUILDING_LIBRARY" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "CARES_BUILDING_LIBRARY" /FD /c
+MTL=midl.exe
+# ADD BASE MTL /nologo /D "NDEBUG" /win32
+# ADD MTL /nologo /D "NDEBUG" /win32
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 ws2_32.lib advapi32.lib kernel32.lib /nologo /dll /pdb:none /machine:I386 /out:"dll-release/cares.dll" /implib:"dll-release/cares.lib" /fixed:no /release /incremental:no
+# ADD LINK32 ws2_32.lib advapi32.lib kernel32.lib /nologo /dll /pdb:none /machine:I386 /out:"dll-release/cares.dll" /implib:"dll-release/cares.lib" /fixed:no /release /incremental:no
+
+!ELSEIF "$(CFG)" == "cares - Win32 LIB Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "lib-debug"
+# PROP BASE Intermediate_Dir "lib-debug/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "lib-debug"
+# PROP Intermediate_Dir "lib-debug/obj"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "DEBUGBUILD" /D "CARES_BUILDING_LIBRARY" /D "CARES_STATICLIB" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "..\.." /D "_DEBUG" /D "WIN32" /D "DEBUGBUILD" /D "CARES_BUILDING_LIBRARY" /D "CARES_STATICLIB" /FD /GZ /c
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo /out:"lib-debug/libcaresd.lib" /machine:I386
+# ADD LIB32 /nologo /out:"lib-debug/libcaresd.lib" /machine:I386
+
+!ELSEIF "$(CFG)" == "cares - Win32 LIB Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "lib-release"
+# PROP BASE Intermediate_Dir "lib-release/obj"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "lib-release"
+# PROP Intermediate_Dir "lib-release/obj"
+# PROP Target_Dir ""
+CPP=cl.exe
+# ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "CARES_BUILDING_LIBRARY" /D "CARES_STATICLIB" /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\.." /D "NDEBUG" /D "WIN32" /D "CARES_BUILDING_LIBRARY" /D "CARES_STATICLIB" /FD /c
+RSC=rc.exe
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo /out:"lib-release/libcares.lib" /machine:I386
+# ADD LIB32 /nologo /out:"lib-release/libcares.lib" /machine:I386
+
+!ENDIF
+
+# Begin Target
+
+# Name "cares - Win32 DLL Debug"
+# Name "cares - Win32 DLL Release"
+# Name "cares - Win32 LIB Debug"
+# Name "cares - Win32 LIB Release"
+# Begin Group "Source Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ares__close_sockets.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares__get_hostent.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares__read_line.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares__timeval.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_cancel.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_data.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_destroy.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_expand_name.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_expand_string.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_fds.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_free_hostent.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_free_string.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_gethostbyaddr.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_gethostbyname.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_getsock.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_init.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_library_init.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_llist.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_mkquery.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_a_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_aaaa_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_ns_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_ptr_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_srv_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_parse_txt_reply.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_process.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_query.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_search.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_send.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strcasecmp.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strerror.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_timeout.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_version.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_writev.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\bitncmp.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_net_pton.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_ntop.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\windows_port.c
+# End Source File
+# End Group
+# Begin Group "Header Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\ares.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_build.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_data.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_dns.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_ipv6.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_library_init.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_llist.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_private.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_rules.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_strcasecmp.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_version.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\ares_writev.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\bitncmp.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_net_pton.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\inet_ntop.h
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\nameser.h
+# End Source File
+# End Group
+# Begin Group "Resource Files"
+
+# PROP Default_Filter ""
+# Begin Source File
+
+SOURCE=..\..\cares.rc
+# End Source File
+# End Group
+# End Target
+# End Project
diff --git a/vc/cares/vc6cares.dsw b/vc/cares/vc6cares.dsw new file mode 100644 index 0000000..5bad375 --- /dev/null +++ b/vc/cares/vc6cares.dsw @@ -0,0 +1,29 @@ +Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "cares"=".\vc6cares.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
diff --git a/vc/vc6aws.dsw b/vc/vc6aws.dsw new file mode 100644 index 0000000..9543a5a --- /dev/null +++ b/vc/vc6aws.dsw @@ -0,0 +1,74 @@ +Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "cares"=".\cares\vc6cares.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Project: "acountry"=".\acountry\vc6acountry.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name cares
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "adig"=".\adig\vc6adig.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name cares
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Project: "ahost"=".\ahost\vc6ahost.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+ Begin Project Dependency
+ Project_Dep_Name cares
+ End Project Dependency
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
diff --git a/windows_port.c b/windows_port.c new file mode 100644 index 0000000..ce129ae --- /dev/null +++ b/windows_port.c @@ -0,0 +1,23 @@ +#include "ares_setup.h" + +/* $Id: windows_port.c,v 1.22 2009-11-02 11:55:54 yangtse Exp $ */ + +/* only do the following on windows + */ +#if (defined(WIN32) || defined(WATT32)) && !defined(MSDOS) + +#ifdef __WATCOMC__ +/* + * Watcom needs a DllMain() in order to initialise the clib startup code. + */ +BOOL +WINAPI DllMain (HINSTANCE hnd, DWORD reason, LPVOID reserved) +{ + (void) hnd; + (void) reason; + (void) reserved; + return (TRUE); +} +#endif + +#endif /* WIN32 builds only */ |