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* Provide a tls_accept_fds() function, which allows a TLS connection to bejsing2015-03-314-9/+39
| | | | | | accepted via an existing pair of file descriptors. Based on a diff from Jan Klemkow.
* Store errors that occur during a tls_accept_socket() call on the contextjsing2015-03-314-11/+12
| | | | | | | for the server, rather than on the context for the connection. This makes more sense than the current behaviour does. Issue reported by Tim van der Molen.
* free the server certificate in tls_connect_fds(); fixes a memory leak withsthen2015-03-211-1/+2
| | | | repeated use of tls_connect. ok jsing
* Prefix function parameter names with underscores in tls.h, since this makesjsing2015-02-261-42/+44
| | | | | | them guaranteed to not conflict per POSIX. ok espie@ guenther@
* Bump libtls major due to symbol removal.jsing2015-02-221-3/+2
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* Rename tls_config_insecure_noverifyhost() tojsing2015-02-224-21/+20
| | | | | | | tls_config_insecure_noverifyname(), so that it is more accurate and keeps inline with the distinction between DNS hostname and server name. Requested by tedu@ during s2k15.
* Check return values when setting dheparams and ecdhecurve for the defaultjsing2015-02-221-11/+14
| | | | configuration.
* In the interests of being secure by default, make the default TLS ciphersjsing2015-02-222-2/+17
| | | | | | | be those that are TLSv1.2 with AEAD and PFS. Provide a "compat" mode that allows the previous default ciphers to be selected. Discussed with tedu@ during s2k15.
* explain how tls_accept_socket works.tedu2015-02-211-2/+9
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* tls_config_set_protocols is really void. Greg Martin.tedu2015-02-211-3/+3
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* fill out docs a bit more, notably the read/write again behaviors.tedu2015-02-211-3/+27
| | | | ok jsing
* s/tls_load_keys/tls_load_file/jsing2015-02-151-2/+2
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* Document tls_config_parse_protocols() and update documentation forjsing2015-02-152-5/+27
| | | | tls_config_set_protocols().
* bump minor for TLS_PROTOCOLS_ALL. OK jsing@reyk2015-02-121-1/+1
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* Add a tls_config_parse_protocols() function that allows a protocols stringjsing2015-02-122-2/+63
| | | | | | | | | to be converted into a libtls protocols value. This allows for things like: "tlsv1.0,tlsv1.1" (TLSv1.0 and TLSv1.1) "all,!tlsv1.0" (all protocols except TLSv1.0) Discussed with tedu@ and reyk@
* Fix handling of "legacy" mode for tls_config_set_dheparams().jsing2015-02-121-2/+2
| | | | Found by reyk@
* Change TLS_PROTOCOLS_DEFAULT to be TLSv1.2 only. Add a TLS_PROTOCOLS_ALLjsing2015-02-121-2/+4
| | | | | | | | that includes all currently supported protocols (TLSv1.0, TLSv1.1 and TLSv1.2). Change all users of libtls to use TLS_PROTOCOLS_ALL so that they maintain existing behaviour. Discussed with tedu@ and reyk@.
* Provide a tls_connect_servername() function that has the same behaviourjsing2015-02-114-6/+27
| | | | | | | | | as tls_connect(), however allows the name to use for verification to be explicitly provided, rather than being inferred from the host value. Requested by reyk@ ok reyk@ tedu@
* Be consistent with naming - only use "host" and "hostname" when referringjsing2015-02-116-60/+61
| | | | | | | | | | to an actual host and use "servername" when referring to the name of the TLS server that we expect to be indentified in the server certificate. Likewise, rename verify_host to verify_name and use the term "name" throughout the verification code (rather than host or hostname). Requested by and ok tedu@
* When parsing the host in tls_connect(), first check if it is a numericreyk2015-02-091-29/+49
| | | | | | | | | IPv4 or IPv6 address before trying to resolve the address with the AI_ADDRCONFIG flag set. This makes sure that attempts to connect to numeric IPs or loopback addresses are always possible and not prevented by AI_ADDRCONFIG. OK jsing@ tedu@
* Use the AI_ADDRCONFIG flag in tls_connect(). This tells the resolverreyk2015-02-081-1/+2
| | | | | | | to ignore unsupported address families - eg. don't resolv IPv6 on IPv4-only hosts. OK jsing@
* Added tls_load_file()reyk2015-02-071-1/+2
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* Add manpage bits for tls_load_file() and tls_accept_socket().reyk2015-02-072-2/+28
| | | | | | | | The tls_accept_socket() has been previously removed because the API is not fixed yet; but it is also already used by httpd(8) and spamd(8) so it is time to add it again and eventually change it later. OK tedu@
* Add tls_load_file() as a helper to load certificates or encrypted keysreyk2015-02-072-2/+92
| | | | | | | | | into memory. This can be used for tls_config_set_ca_mem(), tls_config_set_cert_mem() or tls_config_set_key_mem(). With input from jsing@, tedu@ and henning@ OK tedu@
* Convert tls_connect_fds() and tls_accept_socket() to the new OpenSSL errorjsing2015-02-074-26/+16
| | | | | | | dance handling code. This means that we get slightly useful messages when a TLS connection or accept fails. Requested by reyk@
* Add tls_config_set_dheparams() to allow specification of the parameters tojsing2015-02-077-22/+53
| | | | | | | | | use for DHE. This enables the use of DHE cipher suites. Rename tls_config_set_ecdhcurve() to tls_config_set_ecdhecurve() since it is only used to specify the curve for ephemeral ECDH. Discussed with reyk@
* Attempt to implement the OpenSSL error dance so that TLS read/writejsing2015-02-071-29/+61
| | | | | | failures return something that is actually useful to the caller. ok reyk@
* Rename SSL_CTX_use_certificate_chain() to SSL_CTX_use_certificate_chain_mem().reyk2015-02-061-2/+2
| | | | | As discussed with beck@ jsing@ and others OK beck@
* Make the TLS connect and accept error messages consistent.bluhm2015-01-302-5/+4
| | | | OK jsing@
* last entry in NAME should not have a trailing comma;jmc2015-01-221-2/+2
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* Add MLINK for tls_config_set_ca_mem()reyk2015-01-221-1/+2
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* Allow to to load the CA chain directly from memory instead ofreyk2015-01-226-8/+39
| | | | | | | | specifying a file. This enables CA verification in privsep'ed processes that are running chroot'ed without direct access to the certificate files. With feedback, tests, and OK from bluhm@
* The SSL/TLS session Id context is limited to 32 bytes. Instead ofreyk2015-01-161-1/+13
| | | | | | | | using the name of relayd relay or smtpd pki, use a 32 byte arc4random buffer that should be unique for the context. This fixes an issue in OpenSMTPD when a long pki name could break the configuration. OK gilles@ benno@
* For non-blocking sockets tls_connect_fds() could fail with EAGAIN.bluhm2015-01-132-7/+22
| | | | | | | | Use the same logic from the read, write, accept functions to inform the caller wether a readable or writable socket is needed. After that event, the connect function must be called again. All the checks before connecting are done only once. OK tedu@
* Rename the tls_connect_socket() parameter 'socket' to 's' to avoidbluhm2015-01-021-4/+4
| | | | | a compiler warning about shadowing a global declaration. OK jsing@
* Revert previous; tls_accept_socket() was intentionally undocumentedschwarze2015-01-011-7/+1
| | | | | because the API design isn't fully settled. Requested by jsing@ and tedu@.
* minimally document tls_accept_socket();schwarze2015-01-011-2/+8
| | | | patch from Sunil at Nimmagadda dot net
* include netinet/in.h to define struct in6_addr.bcook2014-12-271-1/+2
| | | | Noticed while testing libtls on FreeBSD.
* Add size_t to int checks for SSL functions.doug2014-12-173-8/+39
| | | | | | | | | | libtls accepts size_t for lengths but libssl accepts int. This verifies that the input does not exceed INT_MAX. It also avoids truncating size_t when comparing with int and adds printf-style attributes for tls_set_error(). with input from deraadt@ and tedu@ ok tedu@
* Allow specific libtls hostname validation errors to propagate.bcook2014-12-073-21/+27
| | | | | | | | Remove direct calls to printf from the tls_check_hostname() path. This allows NUL byte error messages to bubble up to the caller, to be logged in a program-appropriate way. It also removes non-portable calls to getprogname(). ok jsing@
* Fix a memory leak in tls_check_subject_altname() by callingjsing2014-12-071-2/+2
| | | | | | | sk_GENERAL_NAME_pop_free() instead of sk_GENERAL_NAME_free(). The latter only frees the stack itself and does not free the items. From Basskrapfen on github.
* revert previous change for now, adjusting based on comments from jsing@bcook2014-12-074-36/+27
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* Allow specific libtls hostname validation errors to propagate.bcook2014-12-074-27/+36
| | | | | | | | | | | | | Remove direct calls to printf from the tls_check_hostname() path. This allows NUL byte error messages to bubble up to the caller, to be logged in a program-appropriate way. It also removes non-portable calls to getprogname(). The semantics of tls_error() are changed slightly: the last error message is not necessarily preserved between subsequent calls into the library. When the previous call to libtls succeeds, client programs should treat the return value of tls_error() as undefined. ok tedu@
* delete extra word in Ndderaadt2014-11-111-3/+3
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* missing outlen in tls_write decltedu2014-11-071-3/+3
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* Add a tls_connect_fds() function that allows a secure connection to bejsing2014-11-023-6/+34
| | | | | | | | | | established using a pair of existing file descriptors. Based on a diff/request from Jan Klemkow. Rides previous libtls rename/library bump. Discussed with tedu@.
* Rename libressl to libtls to avoid confusion and to make it easier tojsing2014-10-3111-0/+1675
distinguish between LibreSSL (the project) and libressl (the library). Discussed with many.
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