From 33c28c8d7ada38372fbf7aa414337b4be9377bd8 Mon Sep 17 00:00:00 2001 From: Rainer Gerhards Date: Tue, 10 Jul 2007 16:12:46 +0000 Subject: upgrading to autotools build system - thank Peter Vrabec for patches and the idea --- ChangeLog | 956 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 956 insertions(+) create mode 100644 ChangeLog (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 00000000..8a3025b6 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,956 @@ +--------------------------------------------------------------------------- +Version 1.16.0 (RGer/Peter Vrabec), 2007-07-1? +- build system switched to autotools +--------------------------------------------------------------------------- +Version 1.15.1 (RGer), 2007-07-10 +- fixed a bug that caused a dynaFile selector to stall when there was + an open error with one file +- improved template processing for dynaFiles; templates are now only + looked up during initialization - speeds up processing +- optimized memory layout in struct filed when compiled with MySQL + support +- fixed a bug that caused compilation without SYSLOG_INET to fail +- re-enabled the "last message repeated n times" feature. This + feature was not taken care of while rsyslogd evolved from sysklogd + and it was more or less defunct. Now it is fully functional again. +- added system properties: $NOW, $YEAR, $MONTH, $DAY, $HOUR, $MINUTE +- fixed a bug in iovAsString() that caused a memory leak under stress + conditions (most probably memory shortage). This was unlikely to + ever happen, but it doesn't hurt doing it right +- cosmetic: defined type "uchar", change all unsigned chars to uchar +--------------------------------------------------------------------------- +Version 1.15.0 (RGer), 2007-07-05 +- added ability to dynamically generate file names based on templates + and thus properties. This was a much-requested feature. It makes + life easy when it e.g. comes to splitting files based on the sender + address. +- added $umask and $FileCreateMode config file directives +- applied a patch from Bartosz Kuzma to compile cleanly under NetBSD +- checks for extra (unexpected) characters in system config file lines + have been added +- added IPv6 documentation - was accidently missing from CVS +- begun to change char to unsigned char +--------------------------------------------------------------------------- +Version 1.14.2 (RGer), 2007-07-03 +** this release fixes all known nits with IPv6 ** +- restored capability to do /etc/service lookup for "syslog" + service when -r 0 was given +- documented IPv6 handling of syslog messages +- integrate patch from Bartosz Kuźma to make rsyslog compile under + Solaris again (the patch replaced a strndup() call, which is not + available under Solaris +- improved debug logging when waiting on select +- updated rsyslogd man page with new options (-46A) +--------------------------------------------------------------------------- +Version 1.14.1 (RGer/Peter Vrabec), 2007-06-29 +- added Peter Vrabec's patch for IPv6 TCP +- prefixed all messages send to stderr in rsyslogd with "rsyslogd: " +--------------------------------------------------------------------------- +Version 1.14.0 (RGer/Peter Vrabec), 2007-06-28 +- Peter Vrabec provided IPv6 for rsyslog, so we are now IPv6 enabled + IPv6 Support is currently for UDP only, TCP is to come soon. + AllowedSender configuration does not yet work for IPv6. +- fixed code in iovCreate() that broke C's strict aliasing rules +- fixed some char/unsigned char differences that forced the compiler + to spit out warning messages +- updated the Red Hat init script to fix a known issue (thanks to + Peter Vrabec) +--------------------------------------------------------------------------- +Version 1.13.5 (RGer), 2007-06-22 +- made the TCP session limit configurable via command line switch + now -t , +- added man page for rklogd(8) (basically a copy from klogd, but now + there is one...) +- fixed a bug that caused internal messages (e.g. rsyslogd startup) to + appear without a tag. +- removed a minor memory leak that occurred when TAG processing requalified + a HOSTNAME to be a TAG (and a TAG already was set). +- removed potential small memory leaks in MsgSet***() functions. There + would be a leak if a property was re-set, something that happened + extremely seldom. +--------------------------------------------------------------------------- +Version 1.13.4 (RGer), 2007-06-18 +- added a new property "PRI-text", which holds the PRI field in + textual form (e.g. "syslog.info") +- added alias "syslogseverity" for "syslogpriority", which is a + misleading property name that needs to stay for historical + reasons (and backward-compatility) +- added doc on how to record PRI value in log file +- enhanced signal handling in klogd, including removal of an unsafe + call to the logging system during signal handling +--------------------------------------------------------------------------- +Version 1.13.3 (RGer), 2007-06-15 +- create a version of syslog.c from scratch. This is now + - highly optimized for rsyslog + - removes an incompatible license problem as the original + version had a BSD license with advertising clause + - fixed in the regard that rklogd will continue to work when + rsysogd has been restarted (the original version, as well + as sysklogd, will remain silent then) + - solved an issue with an extra NUL char at message end that the + original version had +- applied some changes to klogd to care for the new interface +- fixed a bug in syslogd.c which prevented compiling under debian +--------------------------------------------------------------------------- +Version 1.13.2 (RGer), 2007-06-13 +- lib order in makefile patched to facilitate static linking - thanks + to Bennett Todd for providing the patch +- Integrated a patch from Peter Vrabec (pvrabec@redheat.com): + - added klogd under the name of rklogd (remove dependency on + original sysklogd package + - createDB.sql now in UTF + - added additional config files for use on Red Hat +--------------------------------------------------------------------------- +Version 1.13.1 (RGer), 2007-02-05 +- changed the listen backlog limit to a more reasonable value based on + the maximum number of TCP connections configurd (10% + 5) - thanks to Guy + Standen for the hint (actually, the limit was 5 and that was a + left-over from early testing). +- fixed a bug in makefile which caused DB-support to be disabled when + NETZIP support was enabled +- added the -e option to allow transmission of every message to remote + hosts (effectively turns off duplicate message suppression) +- (somewhat) improved memory consumption when compiled with MySQL support +- looks like we fixed an incompatibility with MySQL 5.x and above software + At least in one case, the remote server name was destroyed, leading to + a connection failure. The new, improved code does not have this issue and + so we see this as solved (the new code is generally somewhat better, so + there is a good chance we fixed this incompatibility). +--------------------------------------------------------------------------- +Version 1.13.0 (RGer), 2006-12-19 +- added '$' as ToPos proptery replacer specifier - means "up to the + end of the string" +- property replacer option "escape-cc", "drop-cc" and "space-cc" added +- changed the handling of \0 characters inside syslog messages. We now + consistently escape them to "#000". This is somewhat recommended in + the draft-ietf-syslog-protocol-19 draft. While the real recomendation + is to not escape any characters at all, we can not do this without + considerable modification of the code. So we escape it to "#000", which + is consistent with a sample found in the Internet-draft. +- removed message glue logic (see printchopped() comment for details) + Also caused removal of parts table and thus some improvements in + memory usage. +- changed the default MAXLINE to 2048 to take care of recent syslog + standardization efforts (can easily be changed in syslogd.c) +- added support for byte-counted TCP syslog messages (much like + syslog-transport-tls-05 Internet Draft). This was necessary to + support compression over TCP. +- added support for receiving compressed syslog messages +- added support for sending compressed syslog messages +- fixed a bug where the last message in a syslog/tcp stream was + lost if it was not properly terminated by a LF character +--------------------------------------------------------------------------- +Version 1.12.3 (RGer), 2006-10-04 +- implemented some changes to support Solaris (but support is not + yet complete) +- commented out (via #if 0) some methods that are currently not being use + but should be kept for further us +- added (interim) -u 1 option to turn off hostname and tag parsing +- done some modifications to better support Fedora +- made the field delimiter inside property replace configurable via + template +- fixed a bug in property replacer: if fields were used, the delimitor + became part of the field. Up until now, this was barely noticable as + the delimiter as TAB only and thus invisible to a human. With other + delimiters available now, it quickly showed up. This bug fix might cause + some grief to existing installations if they used the extra TAB for + whatever reasons - sorry folks... Anyhow, a solution is easy: just add + a TAB character contstant into your template. Thus, there has no attempt + been made to do this in a backwards-compatible way. +--------------------------------------------------------------------------- +Version 1.12.2 (RGer), 2006-02-15 +- fixed a bug in the RFC 3339 date formatter. An extra space was added + after the actual timestamp +- added support for providing high-precision RFC3339 timestamps for + (rsyslogd-)internally-generated messages +- very (!) experimental support for syslog-protocol internet draft + added (the draft is experimental, the code is solid ;)) +- added support for field-extracting in the property replacer +- enhanced the legacy-syslog parser so that it can interpret messages + that do not contain a TIMESTAMP +- fixed a bug that caused the default socket (usually /dev/log) to be + opened even when -o command line option was given +- fixed a bug in the Debian sample startup script - it caused rsyslogd + to listen to remote requests, which it shouldn't by default +--------------------------------------------------------------------------- +Version 1.12.1 (RGer), 2005-11-23 +- made multithreading work with BSD. Some signal-handling needed to be + restructured. Also, there might be a slight delay of up to 10 seconds + when huping and terminating rsyslogd under BSD +- fixed a bug where a NULL-pointer was passed to printf() in logmsg(). +- fixed a bug during "make install" where rc3195d was not installed + Thanks to Bennett Todd for spotting this. +- fixed a bug where rsyslogd dumped core when no TAG was found in the + received message +- enhanced message parser so that it can deal with missing hostnames + in many cases (may not be totally fail-safe) +- fixed a bug where internally-generated messages did not have the correct + TAG +--------------------------------------------------------------------------- +Version 1.12.0 (RGer), 2005-10-26 +- moved to a multi-threaded design. single-threading is still optionally + available. Multi-threading is experimental! +- fixed a potential race condition. In the original code, marking was done + by an alarm handler, which could lead to all sorts of bad things. This + has been changed now. See comments in syslogd.c/domark() for details. +- improved debug output for property-based filters +- not a code change, but: I have checked all exit()s to make sure that + none occurs once rsyslogd has started up. Even in unusual conditions + (like low-memory conditions) rsyslogd somehow remains active. Of course, + it might loose a message or two, but at least it does not abort and it + can also recover when the condition no longer persists. +- fixed a bug that could cause loss of the last message received + immediately before rsyslogd was terminated. +- added comments on thread-safety of global variables in syslogd.c +- fixed a small bug: spurios printf() when TCP syslog was used +- fixed a bug that causes rsyslogd to dump core on termination when one + of the selector lines did not receive a message during the run (very + unlikely) +- fixed an one-too-low memory allocation in the TCP sender. Could result + in rsyslogd dumping core. +- fixed a bug with regular expression support (thanks to Andres Riancho) +- a little bit of code restructuring (especially main(), which was + horribly large) +--------------------------------------------------------------------------- +Version 1.11.1 (RGer), 2005-10-19 +- support for BSD-style program name and host blocks +- added a new property "programname" that can be used in templates +- added ability to specify listen port for rfc3195d +- fixed a bug that rendered the "startswith" comparison operation + unusable. +- changed more functions to "static" storage class to help compiler + optimize (should have been static in the first place...) +- fixed a potential memory leak in the string buffer class destructor. + As the destructur was previously never called, the leak did not actually + appear. +- some internal restructuring in anticipation/preparation of minimal + multi-threading support +- rsyslogd still shares some code with the sysklogd project. Some patches + for this shared code have been brought over from the sysklogd CVS. +--------------------------------------------------------------------------- +Version 1.11.0 (RGer), 2005-10-12 +- support for receiving messages via RFC 3195; added rfc3195d for that + purpose +- added an additional guard to prevent rsyslogd from aborting when the + 2gb file size limit is hit. While a user can configure rsyslogd to + handle such situations, it would abort if that was not done AND large + file support was not enabled (ok, this is hopefully an unlikely scenario) +- fixed a bug that caused additional Unix domain sockets to be incorrectly + processed - could lead to message loss in extreme cases +--------------------------------------------------------------------------- +Version 1.10.2 (RGer), 2005-09-27 +- added comparison operations in property-based filters: + * isequal + * startswith +- added ability to negate all property-based filter comparison operations + by adding a !-sign right in front of the operation name +- added the ability to specify remote senders for UDP and TCP + received messages. Allows to block all but well-known hosts +- changed the $-config line directives to be case-INsensitive +- new command line option -w added: "do not display warnings if messages + from disallowed senders are received" +- fixed a bug that caused rsyslogd to dump core when the compare value + was not quoted in property-based filters +- fixed a bug in the new CStr compare function which lead to invalid + results (fortunately, this function was not yet used widely) +- added better support for "debugging" rsyslog.conf property filters + (only if -d switch is given) +- changed some function definitions to static, which eventually enables + some compiler optimizations +- fixed a bug in MySQL code; when a SQL error occured, rsyslogd could + run in a tight loop. This was due to invalid sequence of error reporting + and is now fixed. +--------------------------------------------------------------------------- +Version 1.10.1 (RGer), 2005-09-23 +- added the ability to execute a shell script as an action. + Thanks to Bjoern Kalkbrenner for providing the code! +- fixed a bug in the MySQL code; due to the bug the automatic one-time + retry after an error did not happen - this lead to error message in + cases where none should be seen (e.g. after a MySQL restart) +- fixed a security issue with SQL-escaping in conjunction with + non-(SQL-)standard MySQL features. +--------------------------------------------------------------------------- +Version 1.10.0 (RGer), 2005-09-20 + REMINDER: 1.10 is the first unstable version if the 1.x series! +- added the capability to filter on any property in selector lines + (not just facility and priority) +- changed stringbuf into a new counted string class +- added support for a "discard" action. If a selector line with + discard (~ character) is found, no selector lines *after* that + line will be processed. +- thanks to Andres Riancho, regular expression support has been + added to the template engine +- added the FROMHOST property in the template processor, which could + previously not be obtained. Thanks to Cristian Testa for pointing + this out and even providing a fix. +- added display of compile-time options to -v output +- performance improvement for production build - made some checks + to happen only during debug mode +- fixed a problem with compiling on SUSE and - while doing so - removed + the socket call to set SO_BSDCOMPAT in cases where it is obsolete. +--------------------------------------------------------------------------- +Version 1.0.4 (RGer), 2006-02-01 +- a small but important fix: the tcp receiver had two forgotten printf's + in it that caused a lot of unnecessary output to stdout. This was + important enough to justify a new release +--------------------------------------------------------------------------- +Version 1.0.3 (RGer), 2005-11-14 +- added an additional guard to prevent rsyslogd from aborting when the + 2gb file size limit is hit. While a user can configure rsyslogd to + handle such situations, it would abort if that was not done AND large + file support was not enabled (ok, this is hopefully an unlikely scenario) +- fixed a bug that caused additional Unix domain sockets to be incorrectly + processed - could lead to message loss in extreme cases +- applied some patches available from the sysklogd project to code + shared from there +- fixed a bug that causes rsyslogd to dump core on termination when one + of the selector lines did not receive a message during the run (very + unlikely) +- fixed an one-too-low memory allocation in the TCP sender. Could result + in rsyslogd dumping core. +- fixed a bug in the TCP sender that caused the retry logic to fail + after an error or receiver overrun +- fixed a bug in init() that could lead to dumping core +- fixed a bug that could lead to dumping core when no HOSTNAME or no TAG + was present in the syslog message +--------------------------------------------------------------------------- +Version 1.0.2 (RGer), 2005-10-05 +- fixed an issue with MySQL error reporting. When an error occured, + the MySQL driver went into an endless loop (at least in most cases). +--------------------------------------------------------------------------- +Version 1.0.1 (RGer), 2005-09-23 +- fixed a security issue with SQL-escaping in conjunction with + non-(SQL-)standard MySQL features. +--------------------------------------------------------------------------- +Version 1.0.0 (RGer), 2005-09-12 +- changed install doc to cover daily cron scripts - a trouble source +- added rc script for slackware (provided by Chris Elvidge - thanks!) +- fixed a really minor bug in usage() - the -r option was still + reported as without the port parameter +--------------------------------------------------------------------------- +Version 0.9.8 (RGer), 2005-09-05 +- made startup and shutdown message more consistent and included the + pid, so that they can be easier correlated. Used syslog-protocol + structured data format for this purpose. +- improved config info in startup message, now tells not only + if it is listening remote on udp, but also for tcp. Also includes + the port numbers. The previous startup message was misleading, because + it did not say "remote reception" if rsyslogd was only listening via + tcp (but not via udp). +- added a "how can you help" document to the doc set +--------------------------------------------------------------------------- +Version 0.9.7 (RGer), 2005-08-15 +- some of the previous doc files (like INSTALL) did not properly + reflect the changes to the build process and the new doc. Fixed + that. +- changed syslogd.c so that when compiled without database support, + an error message is displayed when a database action is detected + in the config file (previously this was used as an user rule ;)) +- fixed a bug in the os-specific Makefiles which caused MySQL + support to not be compiled, even if selected +--------------------------------------------------------------------------- +Version 0.9.6 (RGer), 2005-08-09 +- greatly enhanced documentation. Now available in html format in + the "doc" folder and FreeBSD. Finally includes an install howto. +- improved MySQL error messages a little - they now show up as log + messages, too (formerly only in debug mode) +- added the ability to specify the listen port for udp syslog. + WARNING: This introduces an incompatibility. Formerly, udp + syslog was enabled by the -r command line option. Now, it is + "-r [port]", which is consistent with the tcp listener. However, + just -r will now return an error message. +- added sample startup scripts for Debian and FreeBSD +- added support for easy feature selection in the makefile. Un- + fortunately, this also means I needed to spilt the make file + for different OS and distros. There are some really bad syntax + differences between FreeBSD and Linux make. +--------------------------------------------------------------------------- +Version 0.9.5 (RGer), 2005-08-01 +- the "semicolon bug" was actually not (fully) solved in 0.9.4. One + part of the bug was solved, but another still existed. This one + is fixed now, too. +- the "semicolon bug" actually turned out to be a more generic bug. + It appeared whenever an invalid template name was given. With some + selector actions, rsyslogd dumped core, with other it "just" had + a small ressource leak with others all worked well. These anomalies + are now fixed. Note that they only appeared during system initaliziation + once the system was running, nothing bad happened. +- improved error reporting for template errors on startup. They are now + shown on the console and the start-up tty. Formerly, they were only + visible in debug mode. +- support for multiple instances of rsyslogd on a single machine added +- added new option "-o" --> omit local unix domain socket. This option + enables rsyslogd NOT to listen to the local socket. This is most + helpful when multiple instances of rsyslogd (or rsyslogd and another + syslogd) shall run on a single system. +- added new option "-i " which allows to specify the pidfile. + This is needed when multiple instances of rsyslogd are to be run. +- the new project home page is now online at www.rsyslog.com +--------------------------------------------------------------------------- +Version 0.9.4 (RGer), 2005-07-25 +- finally added the TCP sender. It now supports non-blocking mode, no + longer disabling message reception during connect. As it is now, it + is usable in production. The code could be more sophisticated, but + I've kept it short in anticipation of the move to liblogging, which + will lead to the removal of the code just written ;) +- the "exiting on signal..." message still had the "syslogd" name in + it. Changed this to "rsyslogd", as we do not have a large user base + yet, this should pose no problem. +- fixed "the semiconlon" bug. rsyslogd dumped core if a write-db action + was specified but no semicolon was given after the password (an empty + template was ok, but the semicolon needed to be present). +- changed a default for traditional output format. During testing, it + was seen that the timestamp written to file in default format was + the time of message reception, not the time specified in the TIMESTAMP + field of the message itself. Traditionally, the message TIMESTAMP is + used and this has been changed now. +--------------------------------------------------------------------------- +Version 0.9.3 (RGer), 2005-07-19 +- fixed a bug in the message parser. In June, the RFC 3164 timestamp + was not correctly parsed (yes, only in June and some other months, + see the code comment to learn why...) +- added the ability to specify the destination port when forwarding + syslog messages (both for TCP and UDP) +- added an very experimental TCP sender (activated by + @@machine:port in config). This is not yet for production use. If + the receiver is not alive, rsyslogd will wait quite some time until + the connection request times out, which most probably leads to + loss of incoming messages. + +--------------------------------------------------------------------------- +Version 0.9.2 (RGer), around 2005-07-06 +- I intended to change the maxsupported message size to 32k to + support IHE - but given the memory inefficiency in the usual use + cases, I have not done this. I have, however, included very + specific instructions on how to do this in the source code. I have + also done some testing with 32k messages, so you can change the + max size without taking too much risk. +- added a syslog/tcp receiver; we now can receive messages via + plain tcp, but we can still send only via UDP. The syslog/tcp + receiver is the primary enhancement of this release. +- slightly changed some error messages that contained a spurios \n at + the end of the line (which gives empty lines in your log...) + +--------------------------------------------------------------------------- +Version 0.9.1 (RGer) +- fixed code so that it compiles without errors under FreeBSD +- removed now unused function "allocate_log()" from syslogd.c +- changed the make file so that it contains more defines for + different environments (in the long term, we need a better + system for disabling/enabling features...) +- changed some printf's printing off_t types to %lld and + explicit (long long) casts. I tried to figure out the exact type, + but did not succeed in this. In the worst case, ultra-large peta- + byte files will now display funny informational messages on rollover, + something I think we can live with for the next 10 years or so... + +--------------------------------------------------------------------------- +Version 0.9.0 (RGer) +- changed the filed structure to be a linked list. Previously, it + was a table - well, for non-SYSV it was defined as linked list, + but from what I see that code did no longer work after my + modifications. I am now using a linked list in general because + that is needed for other upcoming modifications. +- fixed a bug that caused rsyslogd not to listen to anything if + the configuration file could not be read +- pervious versions disabled network logging (send/receive) if + syslog/udp port was not in /etc/services. Now defaulting to + port 514 in this case. +- internal error messages are now supported up to 256 bytes +- error message seen during config file read are now also displayed + to the attached tty and not only the console +- changed some error messages during init to be sent to the console + and/or emergency log. Previously, they were only seen if the + -d (debug) option was present on the command line. +- fixed the "2gb file issue on 32bit systems". If a file grew to + more than 2gb, the syslogd was aborted with "file size exceeded". + Now, defines have been added according to + http://www.daimi.au.dk/~kasperd/comp.os.linux.development.faq.html#LARGEFILE + Testing revealed that they work ;) + HOWEVER, if your file system, glibc, kernel, whatever does not + support files larger 2gb, you need to set a file size limit with + the new output channel mechanism. +- updated man pages to reflect the changes + +--------------------------------------------------------------------------- +Version 0.8.4 + +- improved -d debug output (removed developer-only content) +- now compiles under FreeBSD and NetBSD (only quick testing done on NetBSD) +--------------------------------------------------------------------------- +Version 0.8.3 + +- security model in "make install" changed +- minor doc updates +--------------------------------------------------------------------------- +Version 0.8.2 + +- added man page for rsyslog.conf and rsyslogd +- gave up on the concept of rsyslog being a "drop in" replacement + for syslogd. Now, the user installs rsyslogd and also needs to + adjust his system settings to this specifically. This also lead + to these changes: + * changed Makefile so that install now installs rsyslogd instead + of dealing with syslogd + * changed the default config file name to rsyslog.conf +--------------------------------------------------------------------------- +Version 0.8.1 + +- fixed a nasty memory leak (probably not the last one with this release) +- some enhancements to Makefile as suggested by Bennett Todd +- syslogd-internal messages (like restart) were missing the hostname + this has been corrected +--------------------------------------------------------------------------- +Version 0.8.0 + +Initial testing release. Based on the sysklogd package. Thanks to the +sysklogd maintainers for all their good work! +--------------------------------------------------------------------------- + +---------------------------------------------------------------------- +The following comments are from the stock syslogd.c source. They provide +some insight into what happened to the source before we forked +rsyslogd. However, much of the code already has been replaced and more +is to be replaced. So over time, these comments become less valuable. +I have moved them out of the syslogd.c file to shrink it, especially +as a lot of them do no longer apply. For historical reasons and +understanding of how the daemon evolved, they are probably still +helpful. +---------------------------------------------------------------------- +/* + * syslogd -- log system messages + * + * This program implements a system log. It takes a series of lines. + * Each line may have a priority, signified as "" as + * the first characters of the line. If this is + * not present, a default priority is used. + * + * To kill syslogd, send a signal 15 (terminate). A signal 1 (hup) will + * cause it to reread its configuration file. + * + * Defined Constants: + * + * MAXLINE -- the maximum line length that can be handled. + * DEFUPRI -- the default priority for user messages + * DEFSPRI -- the default priority for kernel messages + * + * Author: Eric Allman + * extensive changes by Ralph Campbell + * more extensive changes by Eric Allman (again) + * + * Steve Lord: Fix UNIX domain socket code, added linux kernel logging + * change defines to + * SYSLOG_INET - listen on a UDP socket + * SYSLOG_UNIXAF - listen on unix domain socket + * SYSLOG_KERNEL - listen to linux kernel + * + * Mon Feb 22 09:55:42 CST 1993: Dr. Wettstein + * Additional modifications to the source. Changed priority scheme + * to increase the level of configurability. In its stock configuration + * syslogd no longer logs all messages of a certain priority and above + * to a log file. The * wildcard is supported to specify all priorities. + * Note that this is a departure from the BSD standard. + * + * Syslogd will now listen to both the inetd and the unixd socket. The + * strategy is to allow all local programs to direct their output to + * syslogd through the unixd socket while the program listens to the + * inetd socket to get messages forwarded from other hosts. + * + * Fri Mar 12 16:55:33 CST 1993: Dr. Wettstein + * Thanks to Stephen Tweedie (dcs.ed.ac.uk!sct) for helpful bug-fixes + * and an enlightened commentary on the prioritization problem. + * + * Changed the priority scheme so that the default behavior mimics the + * standard BSD. In this scenario all messages of a specified priority + * and above are logged. + * + * Add the ability to specify a wildcard (=) as the first character + * of the priority name. Doing this specifies that ONLY messages with + * this level of priority are to be logged. For example: + * + * *.=debug /usr/adm/debug + * + * Would log only messages with a priority of debug to the /usr/adm/debug + * file. + * + * Providing an * as the priority specifies that all messages are to be + * logged. Note that this case is degenerate with specifying a priority + * level of debug. The wildcard * was retained because I believe that + * this is more intuitive. + * + * Thu Jun 24 11:34:13 CDT 1993: Dr. Wettstein + * Modified sources to incorporate changes in libc4.4. Messages from + * syslog are now null-terminated, syslogd code now parses messages + * based on this termination scheme. Linux as of libc4.4 supports the + * fsync system call. Modified code to fsync after all writes to + * log files. + * + * Sat Dec 11 11:59:43 CST 1993: Dr. Wettstein + * Extensive changes to the source code to allow compilation with no + * complaints with -Wall. + * + * Reorganized the facility and priority name arrays so that they + * compatible with the syslog.h source found in /usr/include/syslog.h. + * NOTE that this should really be changed. The reason I do not + * allow the use of the values defined in syslog.h is on account of + * the extensions made to allow the wildcard character in the + * priority field. To fix this properly one should malloc an array, + * copy the contents of the array defined by syslog.h and then + * make whatever modifications that are desired. Next round. + * + * Thu Jan 6 12:07:36 CST 1994: Dr. Wettstein + * Added support for proper decomposition and re-assembly of + * fragment messages on UNIX domain sockets. Lack of this capability + * was causing 'partial' messages to be output. Since facility and + * priority information is encoded as a leader on the messages this + * was causing lines to be placed in erroneous files. + * + * Also added a patch from Shane Alderton (shane@ion.apana.org.au) to + * correct a problem with syslogd dumping core when an attempt was made + * to write log messages to a logged-on user. Thank you. + * + * Many thanks to Juha Virtanen (jiivee@hut.fi) for a series of + * interchanges which lead to the fixing of problems with messages set + * to priorities of none and emerg. Also thanks to Juha for a patch + * to exclude users with a class of LOGIN from receiving messages. + * + * Shane Alderton provided an additional patch to fix zombies which + * were conceived when messages were written to multiple users. + * + * Mon Feb 6 09:57:10 CST 1995: Dr. Wettstein + * Patch to properly reset the single priority message flag. Thanks + * to Christopher Gori for spotting this bug and forwarding a patch. + * + * Wed Feb 22 15:38:31 CST 1995: Dr. Wettstein + * Added version information to startup messages. + * + * Added defines so that paths to important files are taken from + * the definitions in paths.h. Hopefully this will insure that + * everything follows the FSSTND standards. Thanks to Chris Metcalf + * for a set of patches to provide this functionality. Also thanks + * Elias Levy for prompting me to get these into the sources. + * + * Wed Jul 26 18:57:23 MET DST 1995: Martin Schulze + * Linux' gethostname only returns the hostname and not the fqdn as + * expected in the code. But if you call hostname with an fqdn then + * gethostname will return an fqdn, so we have to mention that. This + * has been changed. + * + * The 'LocalDomain' and the hostname of a remote machine is + * converted to lower case, because the original caused some + * inconsistency, because the (at least my) nameserver did respond an + * fqdn containing of upper- _and_ lowercase letters while + * 'LocalDomain' consisted only of lowercase letters and that didn't + * match. + * + * Sat Aug 5 18:59:15 MET DST 1995: Martin Schulze + * Now no messages that were received from any remote host are sent + * out to another. At my domain this missing feature caused ugly + * syslog-loops, sometimes. + * + * Remember that no message is sent out. I can't figure out any + * scenario where it might be useful to change this behavior and to + * send out messages to other hosts than the one from which we + * received the message, but I might be shortsighted. :-/ + * + * Thu Aug 10 19:01:08 MET DST 1995: Martin Schulze + * Added my pidfile.[ch] to it to perform a better handling with + * pidfiles. Now both, syslogd and klogd, can only be started + * once. They check the pidfile. + * + * Sun Aug 13 19:01:41 MET DST 1995: Martin Schulze + * Add an addition to syslog.conf's interpretation. If a priority + * begins with an exclamation mark ('!') the normal interpretation + * of the priority is inverted: ".!*" is the same as ".none", ".!=info" + * don't logs the info priority, ".!crit" won't log any message with + * the priority crit or higher. For example: + * + * mail.*;mail.!=info /usr/adm/mail + * + * Would log all messages of the facility mail except those with + * the priority info to /usr/adm/mail. This makes the syslogd + * much more flexible. + * + * Defined TABLE_ALLPRI=255 and changed some occurrences. + * + * Sat Aug 19 21:40:13 MET DST 1995: Martin Schulze + * Making the table of facilities and priorities while in debug + * mode more readable. + * + * If debugging is turned on, printing the whole table of + * facilities and priorities every hexadecimal or 'X' entry is + * now 2 characters wide. + * + * The number of the entry is prepended to each line of + * facilities and priorities, and F_UNUSED lines are not shown + * anymore. + * + * Corrected some #ifdef SYSV's. + * + * Mon Aug 21 22:10:35 MET DST 1995: Martin Schulze + * Corrected a strange behavior during parsing of configuration + * file. The original BSD syslogd doesn't understand spaces as + * separators between specifier and action. This syslogd now + * understands them. The old behavior caused some confusion over + * the Linux community. + * + * Thu Oct 19 00:02:07 MET 1995: Martin Schulze + * The default behavior has changed for security reasons. The + * syslogd will not receive any remote message unless you turn + * reception on with the "-r" option. + * + * Not defining SYSLOG_INET will result in not doing any network + * activity, i.e. not sending or receiving messages. I changed + * this because the old idea is implemented with the "-r" option + * and the old thing didn't work anyway. + * + * Thu Oct 26 13:14:06 MET 1995: Martin Schulze + * Added another logfile type F_FORW_UNKN. The problem I ran into + * was a name server that runs on my machine and a forwarder of + * kern.crit to another host. The hosts address can only be + * fetched using the nameserver. But named is started after + * syslogd, so syslogd complained. + * + * This logfile type will retry to get the address of the + * hostname ten times and then complain. This should be enough to + * get the named up and running during boot sequence. + * + * Fri Oct 27 14:08:15 1995: Dr. Wettstein + * Changed static array of logfiles to a dynamic array. This + * can grow during process. + * + * Fri Nov 10 23:08:18 1995: Martin Schulze + * Inserted a new tabular sys_h_errlist that contains plain text + * for error codes that are returned from the net subsystem and + * stored in h_errno. I have also changed some wrong lookups to + * sys_errlist. + * + * Wed Nov 22 22:32:55 1995: Martin Schulze + * Added the fabulous strip-domain feature that allows us to + * strip off (several) domain names from the fqdn and only log + * the simple hostname. This is useful if you're in a LAN that + * has a central log server and also different domains. + * + * I have also also added the -l switch do define hosts as + * local. These will get logged with their simple hostname, too. + * + * Thu Nov 23 19:02:56 MET DST 1995: Martin Schulze + * Added the possibility to omit fsyncing of logfiles after every + * write. This will give some performance back if you have + * programs that log in a very verbose manner (like innd or + * smartlist). Thanks to Stephen R. van den Berg + * for the idea. + * + * Thu Jan 18 11:14:36 CST 1996: Dr. Wettstein + * Added patche from beta-testers to stop compile error. Also + * added removal of pid file as part of termination cleanup. + * + * Wed Feb 14 12:42:09 CST 1996: Dr. Wettstein + * Allowed forwarding of messages received from remote hosts to + * be controlled by a command-line switch. Specifying -h allows + * forwarding. The default behavior is to disable forwarding of + * messages which were received from a remote host. + * + * Parent process of syslogd does not exit until child process has + * finished initialization process. This allows rc.* startup to + * pause until syslogd facility is up and operating. + * + * Re-arranged the select code to move UNIX domain socket accepts + * to be processed later. This was a contributed change which + * has been proposed to correct the delays sometimes encountered + * when syslogd starts up. + * + * Minor code cleanups. + * + * Thu May 2 15:15:33 CDT 1996: Dr. Wettstein + * Fixed bug in init function which resulted in file descripters + * being orphaned when syslogd process was re-initialized with SIGHUP + * signal. Thanks to Edvard Tuinder + * (Edvard.Tuinder@praseodymium.cistron.nl) for putting me on the + * trail of this bug. I am amazed that we didn't catch this one + * before now. + * + * Tue May 14 00:03:35 MET DST 1996: Martin Schulze + * Corrected a mistake that causes the syslogd to stop logging at + * some virtual consoles under Linux. This was caused by checking + * the wrong error code. Thanks to Michael Nonweiler + * for sending me a patch. + * + * Mon May 20 13:29:32 MET DST 1996: Miquel van Smoorenburg + * Added continuation line supported and fixed a bug in + * the init() code. + * + * Tue May 28 00:58:45 MET DST 1996: Martin Schulze + * Corrected behaviour of blocking pipes - i.e. the whole system + * hung. Michael Nonweiler has sent us + * a patch to correct this. A new logfile type F_PIPE has been + * introduced. + * + * Mon Feb 3 10:12:15 MET DST 1997: Martin Schulze + * Corrected behaviour of logfiles if the file can't be opened. + * There was a bug that causes syslogd to try to log into non + * existing files which ate cpu power. + * + * Sun Feb 9 03:22:12 MET DST 1997: Martin Schulze + * Modified syslogd.c to not kill itself which confuses bash 2.0. + * + * Mon Feb 10 00:09:11 MET DST 1997: Martin Schulze + * Improved debug code to decode the numeric facility/priority + * pair into textual information. + * + * Tue Jun 10 12:35:10 MET DST 1997: Martin Schulze + * Corrected freeing of logfiles. Thanks to Jos Vos + * for reporting the bug and sending an idea to fix the problem. + * + * Tue Jun 10 12:51:41 MET DST 1997: Martin Schulze + * Removed sleep(10) from parent process. This has caused a slow + * startup in former times - and I don't see any reason for this. + * + * Sun Jun 15 16:23:29 MET DST 1997: Michael Alan Dorman + * Some more glibc patches made by . + * + * Thu Jan 1 16:04:52 CET 1998: Martin Schulze . + * This included some balance parentheses for emacs and a bug in + * the exclamation mark handling. + * + * Fixed small bug which caused syslogd to write messages to the + * wrong logfile under some very rare conditions. Thanks to + * Herbert Xu for fiddling this out. + * + * Thu Jan 8 22:46:35 CET 1998: Martin Schulze + * Reworked one line of the above patch as it prevented syslogd + * from binding the socket with the result that no messages were + * forwarded to other hosts. + * + * Sat Jan 10 01:33:06 CET 1998: Martin Schulze + * Fixed small bugs in F_FORW_UNKN meachanism. Thanks to Torsten + * Neumann for pointing me to it. + * + * Mon Jan 12 19:50:58 CET 1998: Martin Schulze + * Modified debug output concerning remote receiption. + * + * Mon Feb 23 23:32:35 CET 1998: Topi Miettinen + * Re-worked handling of Unix and UDP sockets to support closing / + * opening of them in order to have it open only if it is needed + * either for forwarding to a remote host or by receiption from + * the network. + * + * Wed Feb 25 10:54:09 CET 1998: Martin Schulze + * Fixed little comparison mistake that prevented the MARK + * feature to work properly. + * + * Wed Feb 25 13:21:44 CET 1998: Martin Schulze + * Corrected Topi's patch as it prevented forwarding during + * startup due to an unknown LogPort. + * + * Sat Oct 10 20:01:48 CEST 1998: Martin Schulze + * Added support for TESTING define which will turn syslogd into + * stdio-mode used for debugging. + * + * Sun Oct 11 20:16:59 CEST 1998: Martin Schulze + * Reworked the initialization/fork code. Now the parent + * process activates a signal handler which the daughter process + * will raise if it is initialized. Only after that one the + * parent process may exit. Otherwise klogd might try to flush + * its log cache while syslogd can't receive the messages yet. + * + * Mon Oct 12 13:30:35 CEST 1998: Martin Schulze + * Redirected some error output with regard to argument parsing to + * stderr. + * + * Mon Oct 12 14:02:51 CEST 1998: Martin Schulze + * Applied patch provided vom Topi Miettinen with regard to the + * people from OpenBSD. This provides the additional '-a' + * argument used for specifying additional UNIX domain sockets to + * listen to. This is been used with chroot()'ed named's for + * example. See for http://www.psionic.com/papers/dns.html + * + * Mon Oct 12 18:29:44 CEST 1998: Martin Schulze + * Added `ftp' facility which was introduced in glibc version 2. + * It's #ifdef'ed so won't harm with older libraries. + * + * Mon Oct 12 19:59:21 MET DST 1998: Martin Schulze + * Code cleanups with regard to bsd -> posix transition and + * stronger security (buffer length checking). Thanks to Topi + * Miettinen + * . index() --> strchr() + * . sprintf() --> snprintf() + * . bcopy() --> memcpy() + * . bzero() --> memset() + * . UNAMESZ --> UT_NAMESIZE + * . sys_errlist --> strerror() + * + * Mon Oct 12 20:22:59 CEST 1998: Martin Schulze + * Added support for setutent()/getutent()/endutend() instead of + * binary reading the UTMP file. This is the the most portable + * way. This allows /var/run/utmp format to change, even to a + * real database or utmp daemon. Also if utmp file locking is + * implemented in libc, syslog will use it immediately. Thanks + * to Topi Miettinen . + * + * Mon Oct 12 20:49:18 MET DST 1998: Martin Schulze + * Avoid logging of SIGCHLD when syslogd is in the process of + * exiting and closing its files. Again thanks to Topi. + * + * Mon Oct 12 22:18:34 CEST 1998: Martin Schulze + * Modified printline() to support 8bit characters - such as + * russion letters. Thanks to Vladas Lapinskas . + * + * Sat Nov 14 02:29:37 CET 1998: Martin Schulze + * ``-m 0'' now turns of MARK logging entirely. + * + * Tue Jan 19 01:04:18 MET 1999: Martin Schulze + * Finally fixed an error with `-a' processing, thanks to Topi + * Miettinen . + * + * Sun May 23 10:08:53 CEST 1999: Martin Schulze + * Removed superflous call to utmpname(). The path to the utmp + * file is defined in the used libc and should not be hardcoded + * into the syslogd binary referring the system it was compiled on. + * + * Sun Sep 17 20:45:33 CEST 2000: Martin Schulze + * Fixed some bugs in printline() code that did not escape + * control characters '\177' through '\237' and contained a + * single-byte buffer overflow. Thanks to Solar Designer + * . + * + * Sun Sep 17 21:26:16 CEST 2000: Martin Schulze + * Don't close open sockets upon reload. Thanks to Bill + * Nottingham. + * + * Mon Sep 18 09:10:47 CEST 2000: Martin Schulze + * Fixed bug in printchopped() that caused syslogd to emit + * kern.emerg messages when splitting long lines. Thanks to + * Daniel Jacobowitz for the fix. + * + * Mon Sep 18 15:33:26 CEST 2000: Martin Schulze + * Removed unixm/unix domain sockets and switch to Datagram Unix + * Sockets. This should remove one possibility to play DoS with + * syslogd. Thanks to Olaf Kirch for the patch. + * + * Sun Mar 11 20:23:44 CET 2001: Martin Schulze + * Don't return a closed fd if `-a' is called with a wrong path. + * Thanks to Bill Nottingham for providing + * a patch. + * + * The following copyright and license applies to the original + * sysklogd package that was used as a basis for this release of + * rsyslogd. Obviously, it applies to those parts stemming directly + * back to the original sysklogd package. + * + * Copyright (c) 1983, 1988 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the University of California, Berkeley. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ -- cgit