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* Print remote IPv4 address on a dual-stack v6 socket in IPv4 formatGert Doering2015-02-152-5/+23
| | | | | | | | | | | | | | | | | | | Previously, the code would print IPv4-mapped format ("::ffff:1.2.3.4"), which is technically correct but adds no extra value, and is confusingly different from the output if using a v4 socket. Print "1.2.3.4" instead, whatever socket type is used. Affects client IP address in log file, status output (mroute_addr_print_ex), and environment (setenv_sockaddr). The fact that a dual-stack socket was used is still visible in the initial peer connect message in the log: '... Peer Connection Initiated with [AF_INET6]::ffff:1.1.3.4:53779' Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <1419875325-96015-1-git-send-email-gert@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/9363
* New approach to handle peer-id related changes to link-mtu.Gert Doering2015-02-153-4/+36
| | | | | | | | | | | | | | | | | | | | | | Instead of statically increasing link-mtu by +3, keep the old value for OCC compatibility with old servers/clients, and only increase link-mtu if peer-id option is enabled (right now: is pushed by server). If link-mtu has been set in the config, keep configured value, and log warning (because the extra overhead has to decrease tun-mtu). Reserve extra +3 bytes in frame->extra_link. v2: use frame->extra_link, not frame->extra_buffer (receive path on server) introduce frame_add_to_link_mtu() to manipulate frame->link_mtu value rework comments to make more clear what is happening This reverts commit f95010ad247a8998e0c39e394236251fca316849. Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <1423390725-13438-1-git-send-email-gert@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/9450
* Disable SSL compressionSteffan Karger2015-02-151-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | As reported in trac #502, SSL compression can cause problems in some corner cases. OpenVPN does not need SSL compression, since the control channel is low bandwidth. This does not influence the data channel compressen (i.e. --comp or --comp-lzo). Even though this has not yet been relevant for OpenVPN (since an attacker can not easily control contents of control channel messages), SSL compression has been used in the CRIME and BREACH attacks on TLS. TLS 1.3 will probably even remove support for compression all together, for exactly this reason. Since we don't need it, and SSL compression causes issues, let's just disable it in OpenSSL builds. PolarSSL has no run-time flag to disable compression, but is by default compiled without compression. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Arne Schwabe <arne@rfc2549.org> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1424010266-5910-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9453 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix mismatch of fprintf format specifier and argument typeJonathan K. Bullard2015-02-071-1/+1
| | | | | | | | | | | | | | This fixes a warning about a mismatch between a fprintf format string and an argument type on Darwin-64-bit builds: %lu specifies type 'unsigned long' but the argument has type '__darwin_suseconds_t' (aka 'int') Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <CAEsd45SoC+h5tcDraZcQN_MUYzqWYOVvNpkwMo190DLpB32StQ@mail.gmail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9446 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix NULL dereferencingLev Stipakov2015-02-061-4/+5
| | | | | | | | | | | | In certain cases buf.len can be -1, which causes BPTR to return NULL and NULL pointer dereferencing on the next line. As a fix, process only packets with non-zero length. Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1423226280-9580-1-git-send-email-lstipakov@gmail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9444 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Account for peer-id in frame size calculationSteffan Karger2015-01-231-6/+4
| | | | | | | | | | | | | | | Data channel packet using P_DATA_V2 will use three bytes extra for the peer-id. This needs to be accounted for, otherwise OpenVPN will throw TCP/UDP packet too large on write to [AF_INET]10.1.1.1:1194 warnings. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Lev Stipakov <lstipakov@gmail.com> Message-Id: <1422042761-10014-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9418 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Disallow lameduck's float to an address taken by another clientLev Stipakov2015-01-223-6/+17
| | | | | | | | | | | | | | | Existing check didn't take into account the case when floated client is lame duck (CN for lame duck is NULL), which allowed lame duck to float to an address taken by another client. As a fix we use cert_hash_compare function which, besides fixing mentioned case, also allows lame duck to float to an address already taken by the same client. Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <1420658798-29943-1-git-send-email-lstipakov@gmail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9386 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Add option to disable Diffie Hellman key exchange by setting '--dh none'Steffan Karger2015-01-043-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | As requested on the mailing list and in trac ticket #410, add an option to disable 'traditional' Diffie Hellman key exchange. People want to be able to create ecdh-only configurations. This patch also disables RSA key exchange by default for OpenSSL builds, to prevent that people who set "--dh none" but have an OpenSSL version that doesn't support ECDH end up with a less secure connection. Note that users that specify their own --tls-cipher override these defaults and thus can still use whatever OpenSSL supports (and might thus end up with less secure connections). PolarSSL does not allow to easily disable RSA key exchange during runtime, but its default compile options do not include RSA key exchange based cipher suites. Finally update the manpage to reflect the new behaviour, and while touching it change the text to motivate users towards a more secure configuration. v2 - disable RSA key exchange by default Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <1420141569-11773-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9376 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* openssl: use crypto_msg(), get rid of openssl-specific code in error.cSteffan Karger2014-12-314-103/+89
| | | | | | | | | | | | | v2 - don't wrap string for a couple of words, and be more consistent with wrapping (use curly braces for ifs with wrapping statements) v3 - change an incorrect crypto_msg() call back to msg() Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <54A430A2.5000409@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9374 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Remove ENABLE_SSL define (and --disable-ssl configure option)Steffan Karger2014-12-3125-201/+64
| | | | | | | | | | | | | | | | | | | Remove the --disable-ssl configure option and accompanying ENABLE_SSL defines in the master/2.4 branch, to reduce the code and testing complexity a bit. This does not remove to runtime option to run without SSL, just the compile time option to not include any SSL-related code. During the community meeting in November 2014 there were no objections amongst he developers present. Also, this has been announced on the -users and -devel mailing lists two weeks ago, without any response whatsoever. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <54A4248A.1090501@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9371 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* openssl: add more descriptive message for 'no shared cipher' errorSteffan Karger2014-12-311-3/+17
| | | | | | | | | | | | | | | | Overzealous users using the --tls-cipher option, or users with actual incompatible crypto libaries often waste quite some time debugging the 'no shared cipher' error from openssl. See e.g. trac ticket #359: https://community.openvpn.net/openvpn/ticket/359 This change adds a more clear, verb 1 error message reporting the problem directly to the user, instead of just printing the openssl error. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <544EB12E.40200@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9209 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* openssl: add crypto_msg(), to easily log openssl errorsSteffan Karger2014-12-313-0/+40
| | | | | | | | | | | | | This works towards removing OpenSSL-specific error printing code from error.c. The crypto_msg() functions provide convenience wrappers, specific to OpenSSL. Instead of passing the magical 'M_SSLERR' flag to msg(), a developer now just calls crypto_msg() to get OpenSSL errors dumped to log. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1414269324-14102-5-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9199 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Default gateway can't be determined on illumos/Solaris platformsAlexander Pyhalov2014-12-311-2/+19
| | | | | | | | | | The logic which is used on BSD is preserved. The only distinction is that illumos doesn't provide sa_len field in sockaddr structures. Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1413315802-62359-5-git-send-email-alp@rsu.ru> URL: http://article.gmane.org/gmane.network.openvpn.devel/9129 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Set tls-version-max to 1.1 if cryptoapicert is usedSteffan Karger2014-12-281-0/+18
| | | | | | | | | | | | | | | | | | | OpenVPN's current cryptoapicert implementation does not support TLS 1.2 (and newer). Fixing this requires a rewrite of our cryptoapi code to use Microsofts' "Cryptography API: Next Generation", and several hacks to work around that API. As long as we don't fix that, make openvpn automatically cap the TLS version to 1.1 when using cryptoapi (and tell the user we're doing so). This enables the user to use cryptoapi + TLS version negotiation (upto TLS 1.1) without having to change his configuration. This patch has been tested on Windows 8.1 for both the master and release/2.3 branches. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1419762313-31233-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9361 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Make 'provider' option to --show-pkcs11-ids optional where p11-kit is presentDavid Woodhouse2014-12-271-2/+29
| | | | | | | | | | Trac: 490 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <1418905506.21260.6.camel@infradead.org> URL: http://article.gmane.org/gmane.network.openvpn.devel/9355 Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit a91a06cb291414c9e657377e44f7a57343ae7f5a)
* pkcs11: Load p11-kit-proxy.so module by defaultDavid Woodhouse2014-12-271-0/+9
| | | | | | | | | | | | | | | If the user specifies --pkcs11-id or --pkcs-id-management but neglects to explicitly provide a --pkcs11-provider argument, and if the system has p11-kit installed, then load the p11-kit proxy module so that the system-configured tokens are available. Trac: 490 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <1418303015.31745.78.camel@infradead.org> URL: http://article.gmane.org/gmane.network.openvpn.devel/9342 Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit 6f1d3cf062d5c33cbad4d521d157d43d53ffc7d1)
* sockets: Remove the limitation of --tcp-nodelay to be server-onlyDavid Sommerseth2014-12-092-2/+4
| | | | | | | | | | | | | | | | | | The assert(0) happening if trying to use --tcp-nodelay in a client config is really not helpful at all. When this assert(0) was removed, another warning appeared that this could only be used in server configs. That itself is also quite silly, as clients can choose to use --socket-flags TCP_NODELAY in the client config instead. This behaviour does not help the user in any way. This patch removes the server-only restriction and rather provides a more helpful warning when using --tcp-nodelay on the client side. Trac: 489 Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: 1418118764-17846-1-git-send-email-openvpn.list@topphemmelig.net URL: http://article.gmane.org/gmane.network.openvpn.devel/9334
* Prevent memory drain for long lasting floating sessionsLev Stipakov2014-12-083-7/+19
| | | | | | | | | | | | | | | For every float event we generate prefix, which allocates 256 + 64 bytes. That memory is reclaimed when client disconnects, so long lasting and constantly floating sessions drain memory. As a fix use preallocated buffer inside multi_instance for storing multi_prefix. Signed-off-by: Lev Stipakov <lstipakov@gmail.com> Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: 1418057325-13265-1-git-send-email-lstipakov@gmail.com URL: http://article.gmane.org/gmane.network.openvpn.devel/9321 Signed-off-by: David Sommerseth <davids@redhat.com>
* Add the peer-id to the output of the status commandLev Stipakov2014-12-081-6/+8
| | | | | | | | | | | | This adds peer-id to the status output which might help analyze floating logs. This will change the output of status in the same way commit 662ce6acc065bddf6490b3494725b8b3987b7def did. Signed-off-by: Lev Stipakov <lstipakov@gmail.com> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: 1418058362-13480-1-git-send-email-lstipakov@gmail.com URL: http://article.gmane.org/gmane.network.openvpn.devel/9322 Signed-off-by: David Sommerseth <davids@redhat.com>
* Update doxygen (a bit)Steffan Karger2014-12-071-1/+71
| | | | | | | | | | | | | | | | | This is not a full update, but just updates some data channel-related docs I came across. Other pages probably need a bit of attention too. Stuff that was changed: * Explain data channel crypto format in crypto.h * Add P_DATA_V1 and P_DATA_V2 packet format spec * Remove '2.1' from title * Update some OpenSSL-specific text Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1417978095-19427-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9318 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Remove possibility of using --tls-auth with non OpenVPN Static key filesArne Schwabe2014-12-061-61/+4
| | | | | | | | | | In older version OpenVPN would hash a --tls-auth file if it does not conform to the expected format Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <1417871704-30273-1-git-send-email-arne@rfc2549.org> URL: http://article.gmane.org/gmane.network.openvpn.devel/9306 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Really fix '--cipher none' regressionSteffan Karger2014-12-021-4/+2
| | | | | | | | | | | | | | | | | | | ... by not incorrectly hinting to the compiler the function argument of cipher_kt_mode_{cbc,ofb_cfb}() is nonnull, since that no longer is the case. Verified the fix on Debian Wheezy, one of the platforms the reporter in trac #473 mentions with a compiler that would optimize out the required checks. Also add a testcase for --cipher none to t_lpback, to prevent further regressions. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1417552920-31770-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9300 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Drop too-short control channel packets instead of asserting out.Steffan Karger2014-11-281-1/+5
| | | | | | | | | | | | | | | | | | This fixes a denial-of-service vulnerability where an authenticated client could stop the server by triggering a server-side ASSERT(). OpenVPN would previously ASSERT() that control channel packets have a payload of at least 4 bytes. An authenticated client could trigger this assert by sending a too-short control channel packet to the server. Thanks to Dragana Damjanovic for reporting the issue. This bug has been assigned CVE-2014-8104. Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1CED409804E2164C8104F9E623B08B9018803B0FE7@FOXDFT02.FOX.local> Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Peer-id patch v7Lev Stipakov2014-11-2713-50/+331
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added new packet format P_DATA_V2, which includes peer-id. If server supports, client sends all data packets in the new format. When data packet arrives, server identifies peer by peer-id. If peer's ip/port has changed, server assumes that client has floated, verifies HMAC and updates ip/port in internal structs. Changes in v7: A few nitpicks. Changes in v6: Fixed: Make sure float won't happen if hmac check failed (regression). Fixed: Access outside of bounds of array, which has caused memory corruption and crash. Various review fixes. Changes in v5: Protection agains replay attack by commiting float changes only after existing packet processing flow has completed. If peer floats to an address which is already taken by another active session, drop float packet, otherwise disconnect existing session. Changes in v4: Handles correctly float to an address which is used by another peer. This also has fixed crash on assert in multi_client_disconnect. Changes in v3: Bugfix: If float happens after TLS renegotiation and there are no data packets between reneg and float, server will not recognize floated client. Acked-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1416755831-21250-1-git-send-email-lstipakov@gmail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9270 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* polarssl: fix unreachable codeYegor Yefremov2014-11-231-1/+1
| | | | | | | | | | Found via cppcheck and compile-tested. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <1416745303-23641-1-git-send-email-yegorslists@googlemail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9266 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* socket: remove duplicate expressionYegor Yefremov2014-11-231-1/+1
| | | | | | | | | | | Found via cppcheck and compile-tested. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Acked-by: Arne Schwabe <arne@rfc2549.org> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1416687215-26904-1-git-send-email-yegorslists@googlemail.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9263 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix windows build on older mingw versions.Gert Doering2014-11-181-1/+9
| | | | | | | | | | | | Add missing #define for IPV6_V6ONLY sockopt. Fix last remaining fallout of dual-stack patch set in connect() call for "not CONNECT_NONBLOCK" case. Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <1416257903-24629-1-git-send-email-gert@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/9246
* fix warnings on WindowsHeiko Hund2014-11-173-6/+5
| | | | | | | | | | Just add a few valid casts that shut up mingw gcc. Signed-off-by: Heiko Hund <heiko.hund@sophos.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1416068708-6871-2-git-send-email-heiko.hund@sophos.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9229 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix compilation on WindowsHeiko Hund2014-11-171-8/+7
| | | | | | | | | | | | | | | The local member in struct link_socket_address went away a while ago. Fixing the code to compile again under Windows. While there, also fix the code to deal with struct link_socket_info.af == AF_UNSPEC (The breakage this fixes was introduced by the dual-stack socket rework, most likely commit 6c5db192c30ff0c6b89e2e0aefec00329de39302) Signed-off-by: Heiko Hund <heiko.hund@sophos.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1416068708-6871-1-git-send-email-heiko.hund@sophos.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9228 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Add --tls-version-maxSteffan Karger2014-11-146-37/+100
| | | | | | | | | | | | | | | Because using TLS 1.2 breaks certain setups, a user might want to enforce a maximum TLS version to use. This patch adds that option. This patch removes a number of #ifdefs from ssl_polarssl.c, because the polarssl versions we currently support (polar 1.2 for openvpn 2.3, and polar 1.3 for openvpn-master) have all versions unconditionally enabled. Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <544EC052.3080809@fox-it.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9210 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix assertion error when using --cipher noneSteffan Karger2014-11-083-7/+7
| | | | | | | | | | | | Some commits ago, the cipher mode checks were cleaned up to remove code duplication (and fix the issue in #471), but broke '--cipher none' (reported in #473). This commit fixes that. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <545DED2C.5070002@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9217 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Remove unused variables from ssl_verify_openssl.c extract_x509_extension()Steffan Karger2014-10-251-2/+0
| | | | | | | | | Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1414230851-5350-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9195 Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit 6e469f46e94b2bd0fc1509f2bfbda4d6b5374b14)
* Fix regression with password protected private keys (polarssl)Steffan Karger2014-10-241-3/+3
| | | | | | | | | | | | | Between versions 1.2 and 1.3, polarssl changed the errors returned by the X509 parsing functions, which broke the OpenVPN implementation for password protected private keys in polarssl builds. This patch fixes that by checking for the new errors in OpenVPN. Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <5432E951.6020405@fox-it.com> Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix "code=995" bug with windows NDIS6 tap driver.TDivine2014-10-242-0/+28
| | | | | | | | | | | | | | | | | | | | | Modification to address bug where OpenVPN enters state where it is unresponsive and cannot be terminated. Log output is continuous spew of "code=995" errors. Revised fix for code=995 sped bug. Adding new tap adapters while connected: https://community.openvpn.net/openvpn/ticket/430 Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1413961660-19251-2-git-send-email-samuli@openvpn.net> URL: http://article.gmane.org/gmane.network.openvpn.devel/9165 Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1413961660-19251-3-git-send-email-samuli@openvpn.net> URL: http://article.gmane.org/gmane.network.openvpn.devel/9167 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Ensure that client-connect files are always deletedSamuel Thibault2014-10-141-4/+10
| | | | | | | | | | | | | | | | On a long-running, busy server using either a plug-in which hooks into OPENVPN_PLUGIN_CLIENT_CONNECT or a configuration using --client-connect a lot of unused files will be lingering and potentially filling up the file system with temporary files if the plug-in or --client-connect script fails. This patch ensures that these files are always removed in the end, regardless if the plug-in or script succeeds or fails. Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: David Sommerseth <davids@redhat.com> Message-Id: 20141012195919.GU3738@type URL: http://thread.gmane.org/gmane.network.openvpn.devel/9104/focus=9118
* extract_x509_extension(): hide status message during normal operation.Andris Kalnozols2014-10-141-2/+2
| | | | | | | | | | | | | | For each recognized extension in a certificate, extract_x509_extension() would issue an "ASN1 ERROR: can not handle field type" debug message at verb 2. Reduce that to verb 9 (D_TLS_ERRORS -> D_TLS_DEBUG) and alter the message text accordingly. Signed-off-by: Andris Kalnozols <andris@hpl.hp.com> Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <53E6A61C.7010106@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8981 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Implement on-link route adding for iproute2Philipp Hagemeister2014-10-141-4/+7
| | | | | | | | | | | | | | This is an OpenPGP/MIME signed message (RFC 4880 and 3156) Currently, when compiling with --enable-iproute2 , OpenVPN does not create a correct route when the user is connected to the Internet without a gateway (e.g. via ppp). This patch implements the corresponding FIXME. Signed-off-by: Philipp Hagemeister <phihag@phihag.de> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <54259015.2030005@phihag.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/9056 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* systemd: Use systemd functions to consider systemd availabilityDavid Sommerseth2014-10-072-4/+7
| | | | | | | | | | | | | | | | | | | | | This is another systemd implementation clean-up. It was found that SELinux will block OpenVPN from checking /sys/fs/cgroups. As OpenVPN only checked /sys/fs/cgroups and /sys/fs/cgroups/systemd to see if systemd was available or not, it was considered better to query systemd directly to see whether or not to query for usernames and passwords via systemd. This patch has been compile tested on Fedora 19 and Fedora 21 alpha and function tested on Fedora 19. v2 - Use PKG_CHECK_MODULES() + check for libsystemd before libystemd-daemon. systemd >= 209 use a unified library Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1412356567-27125-1-git-send-email-openvpn.list@topphemmelig.net> URL: http://article.gmane.org/gmane.network.openvpn.devel/9072 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix compiler warnings in ssl_polarssl.c.Steffan Karger2014-09-151-11/+15
| | | | | | | | | | No functional changes, just add missing includes and make casts explicit. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1408396155-9017-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8991 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix clang warning in options.cSteffan Karger2014-09-151-2/+2
| | | | | | | | | | | | | | | fixed warning: expression which evaluates to zero treated as a null pointer constant of type 'struct addrinfo *' Seems to be innocent, but clang is correct that this is strange. init_tun() expects two pointers, but options_string() tried to feed it two uint32_t values. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: David Sommerseth <dazo@users.sourceforge.net> Message-Id: <1408568426-19601-2-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9004 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix some unintialized variable warningsSteffan Karger2014-09-153-4/+4
| | | | | | | | | | | Does not actually change behaviour, but fixes compiler warnings and properly initializing is good habit anyway. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: David Sommerseth <dazo@users.sourceforge.net> Message-Id: <1408568426-19601-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/9003 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Remove quadratic complexity from openvpn_base64_decode()Jann Horn2014-09-141-1/+1
| | | | | | | | | | | | | | | | Every four input characters, openvpn_base64_decode called token_decode, which in turn called strlen() on the remaining input. This means that base64 decoding in openvpn had quadratic complexity. All we really need to know is whether the token is complete, so replace the check to check just that, and make the complexity linear wrt the input length. Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <5408494D.7050407@fox-it.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/9016 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Clean up the pipe closing in openvpn_popen()David Sommerseth2014-09-101-8/+10
| | | | | | | | | | | | | | | | Do the proper closing of the pipe ends which is not being used, also in error situations. Moved the closing of the parent side before the waitpid(), to be consistent with the child side (as early as possible). Also improved the error messages with more details. [v2 - Don't call close() if execve() fails] Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: 20140909202408.GK1118@greenie.muc.de URL: http://article.gmane.org/gmane.network.openvpn.devel/9036
* Don't try to use systemd-ask-password if it is not availableDavid Sommerseth2014-09-101-3/+5
| | | | | | | | | | | | If the SYSTEMD_ASK_PASSWORD_PATH executable cannot be found, we don't consider systemd as running. [v2 - Don't clean up white-space] Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: 20140909202044.GJ1118@greenie.muc.de URL: http://article.gmane.org/gmane.network.openvpn.devel/9035
* Don't let openvpn_popen() keep zombies aroundDavid Sommerseth2014-09-091-2/+5
| | | | | | | | | | | | | | | | | | | Commit 9449e6a9eba30c9ed054f57d630a88c9f087080f introduced the openvpn_popen() function to support retrieving passwords via systemd. It was discovered that the child processes openvpn fork()ed would be lingering around until openvpn stopped. This was due to the lack of a wait() call. This patch also cleans up a few minor white-space issues in the same code segment. [v2 proper initialisation of status variable] Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: 1409930731-15263-2-git-send-email-davids@redhat.com URL: http://article.gmane.org/gmane.network.openvpn.devel/9021
* Add configure check for the path to systemd-ask-passwordMike Gilbert2014-09-051-1/+1
| | | | | | | | | | | Gentoo Linux installs this in /usr/bin by default. Also, the user may have installed it in /usr/local/bin if building from source. Acked-by: David Sommerseth <davids@redhat.com> Message-Id: 1404419045-14728-1-git-send-email-floppym@gentoo.org URL: http://article.gmane.org/gmane.network.openvpn.devel/8825 Signed-off-by: David Sommerseth <davids@redhat.com>
* Fix typo in cipher_kt_mode_{cbc, ofb_cfb}() doxygen.Steffan Karger2014-07-291-2/+2
| | | | | | | | Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1406667866-14226-1-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8953 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Always enable http-proxy and socks-proxyArne Schwabe2014-07-1814-197/+9
| | | | | | | | Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1404735142-31420-2-git-send-email-arne@rfc2549.org> URL: http://article.gmane.org/gmane.network.openvpn.devel/8840 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Fix server routes not working in topology subnet with --server [v3]Arne Schwabe2014-07-131-1/+5
| | | | | | | | | | | | | | | | | | | | The IPv4 routing code needs an IPv4 address to point a route to, and in --topology subnet mode, the *server* did not have one set by default. So we now just default --route-gateway to the next address right after the server address - the specific address doesn't matter, as the correct next-hop will not be resolved by the host OS but by the OpenVPN daemon. All that is needed is "it's in the subnet routed to the tun interface". Using the server address itself would work on unix, but doesn't work with the Windows TAP driver (as it does not spoof ARP responses for itself). Signed-off-by: Arne Schwabe <arne@rfc2549.org> Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Arne Schwabe <arne@rfc2549.org> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1405254527-23833-1-git-send-email-gert@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/8904
* Define dummy SSL_OP_NO_TICKET flag if not present in OpenSSL.Steffan Karger2014-07-131-0/+11
| | | | | | | | | | | This restores support for pre-0.9.8f OpenSSL versions, which do not include stateless session resumption, and the accompanying SSL_OP_NO_TICKET flag. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <53C251E2.7050605@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8902 Signed-off-by: Gert Doering <gert@greenie.muc.de>
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