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* Added support for TLS Keying Material Exporters [RFC-5705]Daniel Kubec2015-10-101-0/+13
| | | | | | | | | | | | | Keying Material Exporter [RFC-5705] allow additional keying material to be derived from existing TLS channel. This exported keying material can then be used for a variety of purposes. [DS: Updated man page to document both upper and lower length boundaries] Signed-off-by: Daniel Kubec <niel@rtfm.cz> Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Steffan Karger <steffan.karger@fox-it.com Acked-by: David Sommerseth <davids@redhat.com>
* Add --tls-version-maxSteffan Karger2014-11-141-5/+6
| | | | | | | | | | | | | | | 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>
* Fixed some compile issues with show_library_versions()James Yonan2014-05-201-1/+1
| | | | | | | | | | | | | | | | | | | * Refactored show_library_versions to work around the fact that some compilers (such as MSVC 2008) can't handle #ifdefs inside of macro references. * Declare show_library_versions() in options.h because it's referenced by other files such as openvpn.c. * Declare get_ssl_library_version() as returning const char *, to avoid loss of const qualifier in ssl_openssl.c. Signed-off-by: James Yonan <james@openvpn.net> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1399589436-8730-7-git-send-email-james@openvpn.net> URL: http://article.gmane.org/gmane.network.openvpn.devel/8711 Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit a91a2d6ad7b139ec78d61c8616b8447847e9ecc6)
* Add support for elliptic curve diffie-hellmann key exchange (ECDH)Steffan Karger2014-04-251-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | This patch is based on Jan Just Keijser's patch from Feb 7, 2012. When OpenSSL 1.0.2+ or PolarSSL is used, lets the crypto library do the heavy lifting. For OpenSSL builds, if a user specifies a curve using --ecdh-curve, it first tries to override automatic selection using that curve. For older OpenSSL, tries the following things (in order of preference): * When supplied, use the ecdh curve specified by the user. * Try to extract the curve from the private key, use the same curve. * Fall back on secp384r1 curve. Note that although a curve lookup might succeed, OpenSSL 1.0.0 and older do *not* support TLSv1.1 or TLSv1.2, which means no that no EC-crypto can be used. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <53597BEA.6080408@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8625 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Add SSL library version reporting.Gert Doering2014-04-181-0/+6
| | | | | | | | | | | | Print the version of the SSL and LZO library (if any) used. SSL library version is also sent as IV_SSL=<version> to the server if --push-peer-info is enabled. Signed-off-by: Gert Doering <gert@greenie.muc.de> Acked-by: Steffan Karger <steffan.karger@fox-it.com> Message-Id: <20140416152456.GI16637@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/8537
* Make tls_ctx_restrict_ciphers accept NULL as char *cipher_list.Steffan Karger2014-01-051-2/+3
| | | | | | | | | | | | | | | | This adds some ifs to check for NULL in tls_ctx_restrict_ciphers() to prepare for disabling export ciphers by default in OpenVPN 2.4+. Also let tls_ctx_restrict_ciphers always be called, also when *cipher_list is NULL. Signed-off-by: Steffan Karger <steffan@karger.me> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <52C8922E.3030607@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8173 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* If --tls-cipher is supplied, make --show-tls parse the list.Steffan Karger2014-01-031-1/+3
| | | | | | | | | | | | This allows to check the available TLS ciphers for a specific configuration by supplying both --tls-cipher and --show-tls options. 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: <1388607026-12297-4-git-send-email-steffan@karger.me> URL: http://article.gmane.org/gmane.network.openvpn.devel/8150 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Refactor tls_ctx_use_external_private_key()Joachim Schipper2013-11-231-19/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenSSL's tls_ctx_load_cert_file() had a parameter in which a copy of the context's certificate chain was stored on return, used by tls_ctx_use_external_private_key() only and free()d immediately thereafter. PolarSSL also supported this output parameter, but returned a pointer to the context's certificate chain (rather than to a copy of the certificate, as OpenSSL does) - which meant that we would have to #ifdef the free(). PolarSSL cannot make a copy of a certificate chain, and OpenSSL cannot store a pointer to (instead of a copy of) the cert. So remove the output parameter from tls_ctx_load_cert_file() and incorporate the needed functionality directly into tls_ctx_use_external_private_key() (which is straightforward for both OpenSSL and PolarSSL, as long as you don't try to support both at once.) Signed-off-by: Joachim Schipper <joachim.schipper@fox-it.com> Acked-by: Arne Schwabe <arne@rfc2549.org> Message-Id: <1379587649-25506-2-git-send-email-steffan.karger@fox-it.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/7888 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* TLS version negotiationJames Yonan2013-07-111-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Updated the TLS negotiation logic to adaptively try to connect using the highest TLS version supported by both client and server. Previously, OpenVPN (when linked with OpenSSL) would always connect using TLS 1.0. Also added tls-version-min directive to force a higher TLS version than 1.0: tls-version-min <version> ['or-highest'] -- sets the minimum TLS version we will accept from the peer. Examples for version include "1.0" (default), "1.1", or "1.2". If 'or-highest' is specified and version is not recognized, we will only accept the highest TLS version supported by the local SSL implementation. Examples: tls-version-min 1.1 -- fail the connection unless peer can connect at TLS 1.1 or higher. tls-version-min 1.2 or-highest -- require that the peer connect at TLS 1.2 or higher, however if the local SSL implementation doesn't support TLS 1.2 (as it wouldn't if linked with an older version of OpenSSL), reduce the minimum required version to the highest version supported by the local SSL implementation (such as TLS 1.0). This is intended to allow client configurations to target higher TLS versions that are supported on the server, even if some older clients don't support these versions yet. [ This is a merged patch from on the following commits on git://github.com/jamesyonan/openvpn.git 03a5599202bdc3ba07983dc4efdae387fb8fb436 d23005413b0e0f28a3c48a6342f494763d5c9b40 ] Signed-off-by: James Yonan <james@openvpn.net> Acked-by: Gert Doering <gert@greenie.muc.de> Acked-by: Arne Schwabe <arne@rfc2549.org> URL: http://thread.gmane.org/gmane.network.openvpn.devel/7743 URL: http://thread.gmane.org/gmane.network.openvpn.devel/7744 Message-Id: 51C77F12.1090802@openvpn.net Signed-off-by: David Sommerseth <davids@redhat.com>
* plugin: Extend the plug-in v3 API to identify the SSL implementation usedDavid Sommerseth2013-07-031-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenVPN would segfault unexpectedly if it would be compiled against PolarSSL and the plug-in would expect OpenSSL, or vice-versa. This segfault would not appear before the plug-in would try to access functions which would be available if the plug-in and OpenVPN uses the same SSL implementation. This patch adds a member to the plug-in initialisation function, which identifies the SSL implementation. The log_v3 plug-in is updated accordingly + a simple fix to make it buildable again using the ./build script. A minor documentation error in the openvpn-plugin.h was also corrected, where it mentioned OPENVPN_PLUGIN_VERSION instead of OPENVPN_PLUGINv3_STRUCTVER. v2 - add const ovpnSSLAPI ssl_api at the end of struct openvpn_plugin_args_open_in and not in the "middle" v3 - fix bug in plug-in init, as the SSLAPI was located wrong in the args struct sent to the openvpn_plugin_open_v3() function. v4 - Ensure SSLAPI got a sane/known value if SSL is disabled or unknown Signed-off-by: David Sommerseth <davids@redhat.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1372879030-10576-1-git-send-email-dazo@users.sourceforge.net> URL: http://article.gmane.org/gmane.network.openvpn.devel/7754 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Do not pass struct tls_session* as void* in key_state_ssl_init().Steffan Karger2013-06-071-1/+5
| | | | | | | | Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: David Sommerseth <davids@redhat.com> Message-Id: 51B1DBEF.1090705@fox-it.com URL: http://article.gmane.org/gmane.network.openvpn.devel/7664 Signed-off-by: David Sommerseth <davids@redhat.com>
* Switch to IANA names for TLS ciphers.Steffan Karger2013-03-221-0/+9
| | | | | | | | | | | | | Added translation table and functions to translate between TLS OpenSSL and IANA (IETF) cipher suite names. The previously used OpenSSL names are still accepted, but a deprecation warning is issued. Signed-off-by: Steffan Karger <steffan.karger@fox-it.com> Acked-by: Adriaan de Jong <dejong@fox-it.com> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <1363942465-3251-6-git-send-email-steffan.karger@fox-it.com> URL: http://article.gmane.org/gmane.network.openvpn.devel/7439 Signed-off-by: Gert Doering <gert@greenie.muc.de>
* Remove ENABLE_INLINE_FILES conditionalsArne Schwabe2012-06-221-26/+10
| | | | | | | | | | This code is always enabled and removing the #ifdef make the code a little bit clearer Signed-off-by: Arne Schwabe <arne@rfc2549.org> Acked-by: James Yonan <james@openvpn.net> Message-Id: 1340044749-10694-4-git-send-email-arne@rfc2549.org URL: http://article.gmane.org/gmane.network.openvpn.devel/6746 Signed-off-by: David Sommerseth <davids@redhat.com>
* Added support for new PolarSSL 1.1 RNGAdriaan de Jong2012-04-271-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch, while retaining PolarSSL 1.0 support, introduces the PolarSSL 1.1 DRBG. This RNG adds a number of features, including support for personalisation strings and multiple entropy sources. Personalisation strings have been implemented, based on PID, program name, place within memory, and a hash of the user's certificate. The entropy sources used are the platform default ones. Which ones these are depends on how PolarSSL was built, but usually this includes: - /dev/urandom or the Windows CryptoAPI RNG - the HAVEGE RNG - the output of PolarSSL's hardclock() call (usually RDTSC) Finally, this patch moves to only one instance of the RNG per OpenVPN instance, instead of one per keystate Signed-off-by: Adriaan de Jong <dejong@fox-it.com> Signed-off-by: Eelse-jan Stutvoet <stutvoet@fox-it.com> Acked-by: James Yonan <james@openvpn.net> Message-Id: 1333351687-3732-1-git-send-email-dejong@fox-it.com URL: http://article.gmane.org/gmane.network.openvpn.devel/6210 Signed-off-by: David Sommerseth <davids@redhat.com> Notes: This patch was ACKed by James Yonan in an IRC meeting March 29, 2012 under the condition that PolarSSL 1.0 and havege support is removed later on. Currently, the meeting minutes have not been made public. (David Sommerseth, Fri Apr 27 21:31:03 UTC 2012)
* build: proper crypto detection and usageAlon Bar-Lev2012-03-221-5/+5
| | | | | | Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com> Acked-by: Adriaan de Jong <dejong@fox-it.com> Signed-off-by: David Sommerseth <davids@redhat.com>
* build: standard directory layoutAlon Bar-Lev2012-03-221-0/+441
Suitable for mature project. root - administrative stuff doc - documents src - sources tests - tests distro - distro specific files sample - samples SIDE EFFECT: many changes to rpm spec. Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com> Acked-by: Adriaan de Jong <dejong@fox-it.com> Signed-off-by: David Sommerseth <davids@redhat.com>
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