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* Fix breakage in SSL_connect, SSL_accept, etc. by not propagatingbeck2020-01-241-1/+5
| | | | | | | | | new retry conditions from the record layer all the way up to the callers. Instead we catch them at the top of the record layer and retry the operations, unless we actually got a retry indicated from actual IO operations. ok jsing@ tb@
* Implement client hello processing in the TLSv1.3 server.jsing2020-01-231-1/+4
| | | | ok beck@
* Correctly handle TLSv1.3 ciphers suites in ssl3_choose_cipher().jsing2020-01-231-1/+6
| | | | | | | | | | Currently, TLSv1.3 cipher suites are filtered out by the fact that they have authentication and key exchange algorithms that are not being set in ssl_set_cert_masks(). Fix this so that ssl3_choose_cipher() works for TLSv1.3, however we also now need to ensure that we filter out TLSv1.3 for non-TLSv1.3 and only select TLSv1.3 for TLSv1.3. ok beck@ tb@
* Add checking int the client to check the magic values which arebeck2020-01-231-1/+9
| | | | | | | set by a 1.3 server when it downgrades to tls 1.2 or 1.1 as per RFC 8446 section 4.1.3 ok jsing@
* Implement pending for TLSv1.3.jsing2020-01-231-1/+17
| | | | | | Makes `openssl s_client -peekaboo` work with TLSv1.3. ok beck@ tb@
* Add a TLS13_IO_ALERT return value so that we can explicitly signal whenjsing2020-01-231-3/+10
| | | | | | | | | | we sent or received a fatal alert. Pull the fatal_alert check up into tls13_legacy_error(). Also, if sending an alert resulted in EOF, do not propagate this back since we do not want to signal EOF to the caller (rather we want to indicate failure). ok beck@ tb@
* Pass a handshake message content CBS to TLSv1.3 receive handlers.jsing2020-01-221-1/+4
| | | | | | | | | This avoids every receive handler from having to get the handshake message content itself. Additionally, pull the trailing data check up so that each receive handler does not have to implement it. This makes the code more readable and reduces duplication. ok beck@ tb@
* Implement support for SSL_peek() in the TLSv1.3 record layer.jsing2020-01-221-8/+6
| | | | ok beck@ tb@
* Don't add an extra unknown error if we got a fatal alertbeck2020-01-221-2/+3
| | | | ok jsing@
* Add minimal support for hello retry request for RFC conformance.beck2020-01-221-1/+4
| | | | | | We currently don't support sending a modified clienthello ok jsing@ tb@
* Implement close-notify and SSL_shutdown() handling for the TLSv1.3 client.jsing2020-01-221-1/+51
| | | | ok beck@ inoguchi@ tb@
* Provide SSL_R_UNKNOWN.jsing2020-01-211-2/+2
| | | | | | | This allows us to indicate that the cause of the failure is unknown, rather than implying that it was an internal error when it was not. ok beck@
* Clear and free the tls13_ctx that hangs off an SSL *s fromtb2020-01-211-1/+2
| | | | | | | | | SSL_{clear,free}(3). Make sure the handshake context is cleaned up completely: the hs_tls13 reacharound is taken care of by ssl3_{clear,free}(3). Add a missing tls13_handshake_msg_free() call to tls13_ctx_free(). ok beck jsing
* Provide an error framework for use with the TLSv1.3 code.jsing2020-01-201-4/+19
| | | | | | | This is based on the libtls error handling code, but adds machine readable codes and subcodes. We then map these codes back to libssl error codes. ok beck@ inoguchi@
* Add support for TLS 1.3 post handshake messages and key updating.beck2019-11-261-3/+147
| | | | | | tested against openssl 1.1's server. ok jsing@ tb@
* Separate the callbacks for recieved and completed post handshake messagesbeck2019-11-171-2/+2
| | | | | | from the record layer ok jsing@
* Remove the alert level from the TLSv1.3 alert callback.jsing2019-03-171-2/+2
| | | | | | | | In TLSv1.3 the alert level is effectively meaningless and the record layer has already checked that it is appropriate. As such, drop it from the alert callback. ok tb@
* Don't index a void pointer, fixes compilation with visual studio.millert2019-03-041-2/+3
| | | | | Gcc/clang will treat void * as char * but this is non-standard. OK deraadt@ jsing@ inoguchi@
* Implement non-SSL_MODE_ENABLE_PARTIAL_WRITE in tls13_legacy_write_bytes().jsing2019-02-281-3/+34
| | | | | | | In non-SSL_MODE_ENABLE_PARTIAL_WRITE mode we have to write out all the things and only return success once all of the data has been sent. ok inoguchi@ tb@
* Automatically complete the handshake from tls13_legacy_{read,write}_bytes()jsing2019-02-281-1/+13
| | | | | | | | | | | | | | If the TLS handshake has not been completed, automatically complete the handshake as part of the read/write call, implementing the current SSL_read()/SSL_write() behaviour. Once the TLS handshake is completed we push a WANT_POLLIN or WANT_POLLOUT back up to the caller, since some applications appear to incorrectly call SSL_read() or SSL_write(), rather than repeating the previous call. This can lead to attempts to read data that does not exist, since the WANT_POLLIN was actually triggered as part of the handshake. ok inoguchi@ tb@
* Add appropriate length checks to tls13_legacy_{read,write}_bytes()jsing2019-02-281-3/+9
| | | | ok inoguchi@ tb@
* Correctly propagate EOF from BIO in tls13_legacy_wire_read().jsing2019-02-261-1/+3
| | | | ok tb@
* Set BIO retry on TLS13_IO_WANT_POLLIN/TLS13_IO_WANT_POLLOUT.jsing2019-02-231-1/+3
| | | | | | | | | | | In most cases a TLS13_IO_WANT_POLLIN or TLS13_IO_WANT_POLLOUT will have bubbled up from the wire callbacks, in which case the BIO retry flag will already be set. However, if we return TLS13_IO_WANT_POLLIN or TLS13_IO_WANT_POLLOUT from a higher layer the BIO retry flag will not be set and that will cause SSL_get_error() to return SSL_ERROR_SYSCALL rather than the intended SSL_ERROR_WANT_READ/SSL_ERROR_WANT_WRITE. ok beck@ tb@
* Wire up alert handling for TLSv1.3.jsing2019-02-211-2/+32
| | | | | | | | | In TLSv1.3 there are two types of alerts "closure alerts" and "error alerts". This makes the record layer more strict and handles closure of the read and write channels. The callback then handles the record layer to SSL mapping/behaviour. ok tb@
* Provide the initial TLSv1.3 client implementation.jsing2019-01-211-3/+36
| | | | | | | | | Move tls13_connect() to a new tls13_client.c file and provide a legacy wrapper to it, which allocates a struct tls_ctx if necessary. Also move tls13_client_hello_send() to tls13_client.c and actual implement the building of a client hello. ok tb@
* Correct some rwstate handling that I broke when refactoring.jsing2019-01-211-3/+13
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* Provide TLS 1.3 cipher AEAD/hash and legacy I/O handling functions.jsing2019-01-211-0/+197
Provide functionality for determining AEADs and hashes for TLS 1.3 ciphers. Also provide wire read/write callbacks that interface with BIO and functions that interface between SSL_read/SSL_write and the TLS 1.3 record layer API. ok tb@
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