| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/ssl.h> |
| |
| #include <assert.h> |
| #include <string.h> |
| |
| #include <openssl/buf.h> |
| |
| #include "internal.h" |
| |
| |
| static int ssl3_version_from_wire(uint16_t *out_version, |
| uint16_t wire_version) { |
| switch (wire_version) { |
| case SSL3_VERSION: |
| case TLS1_VERSION: |
| case TLS1_1_VERSION: |
| case TLS1_2_VERSION: |
| *out_version = wire_version; |
| return 1; |
| case TLS1_3_DRAFT_VERSION: |
| *out_version = TLS1_3_VERSION; |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static uint16_t ssl3_version_to_wire(uint16_t version) { |
| switch (version) { |
| case SSL3_VERSION: |
| case TLS1_VERSION: |
| case TLS1_1_VERSION: |
| case TLS1_2_VERSION: |
| return version; |
| case TLS1_3_VERSION: |
| return TLS1_3_DRAFT_VERSION; |
| } |
| |
| /* It is an error to use this function with an invalid version. */ |
| assert(0); |
| return 0; |
| } |
| |
| static int ssl3_set_read_state(SSL *ssl, SSL_AEAD_CTX *aead_ctx) { |
| if (ssl->s3->rrec.length != 0) { |
| /* There may not be unprocessed record data at a cipher change. */ |
| OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE); |
| ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); |
| SSL_AEAD_CTX_free(aead_ctx); |
| return 0; |
| } |
| |
| memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence)); |
| |
| SSL_AEAD_CTX_free(ssl->s3->aead_read_ctx); |
| ssl->s3->aead_read_ctx = aead_ctx; |
| return 1; |
| } |
| |
| static int ssl3_set_write_state(SSL *ssl, SSL_AEAD_CTX *aead_ctx) { |
| memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence)); |
| |
| SSL_AEAD_CTX_free(ssl->s3->aead_write_ctx); |
| ssl->s3->aead_write_ctx = aead_ctx; |
| return 1; |
| } |
| |
| static const SSL_PROTOCOL_METHOD kTLSProtocolMethod = { |
| 0 /* is_dtls */, |
| SSL3_VERSION, |
| TLS1_3_VERSION, |
| ssl3_version_from_wire, |
| ssl3_version_to_wire, |
| ssl3_new, |
| ssl3_free, |
| ssl3_get_message, |
| ssl3_hash_current_message, |
| ssl3_release_current_message, |
| ssl3_read_app_data, |
| ssl3_read_change_cipher_spec, |
| ssl3_read_close_notify, |
| ssl3_write_app_data, |
| ssl3_dispatch_alert, |
| ssl3_supports_cipher, |
| ssl3_init_message, |
| ssl3_finish_message, |
| ssl3_write_message, |
| ssl3_send_change_cipher_spec, |
| ssl3_expect_flight, |
| ssl3_received_flight, |
| ssl3_set_read_state, |
| ssl3_set_write_state, |
| }; |
| |
| const SSL_METHOD *TLS_method(void) { |
| static const SSL_METHOD kMethod = { |
| 0, |
| &kTLSProtocolMethod, |
| }; |
| return &kMethod; |
| } |
| |
| const SSL_METHOD *SSLv23_method(void) { |
| return TLS_method(); |
| } |
| |
| /* Legacy version-locked methods. */ |
| |
| const SSL_METHOD *TLSv1_2_method(void) { |
| static const SSL_METHOD kMethod = { |
| TLS1_2_VERSION, |
| &kTLSProtocolMethod, |
| }; |
| return &kMethod; |
| } |
| |
| const SSL_METHOD *TLSv1_1_method(void) { |
| static const SSL_METHOD kMethod = { |
| TLS1_1_VERSION, |
| &kTLSProtocolMethod, |
| }; |
| return &kMethod; |
| } |
| |
| const SSL_METHOD *TLSv1_method(void) { |
| static const SSL_METHOD kMethod = { |
| TLS1_VERSION, |
| &kTLSProtocolMethod, |
| }; |
| return &kMethod; |
| } |
| |
| const SSL_METHOD *SSLv3_method(void) { |
| static const SSL_METHOD kMethod = { |
| SSL3_VERSION, |
| &kTLSProtocolMethod, |
| }; |
| return &kMethod; |
| } |
| |
| /* Legacy side-specific methods. */ |
| |
| const SSL_METHOD *TLSv1_2_server_method(void) { |
| return TLSv1_2_method(); |
| } |
| |
| const SSL_METHOD *TLSv1_1_server_method(void) { |
| return TLSv1_1_method(); |
| } |
| |
| const SSL_METHOD *TLSv1_server_method(void) { |
| return TLSv1_method(); |
| } |
| |
| const SSL_METHOD *SSLv3_server_method(void) { |
| return SSLv3_method(); |
| } |
| |
| const SSL_METHOD *TLSv1_2_client_method(void) { |
| return TLSv1_2_method(); |
| } |
| |
| const SSL_METHOD *TLSv1_1_client_method(void) { |
| return TLSv1_1_method(); |
| } |
| |
| const SSL_METHOD *TLSv1_client_method(void) { |
| return TLSv1_method(); |
| } |
| |
| const SSL_METHOD *SSLv3_client_method(void) { |
| return SSLv3_method(); |
| } |
| |
| const SSL_METHOD *SSLv23_server_method(void) { |
| return SSLv23_method(); |
| } |
| |
| const SSL_METHOD *SSLv23_client_method(void) { |
| return SSLv23_method(); |
| } |
| |
| const SSL_METHOD *TLS_server_method(void) { |
| return TLS_method(); |
| } |
| |
| const SSL_METHOD *TLS_client_method(void) { |
| return TLS_method(); |
| } |