blob: 4efed3f0b601e4c087c4175bddbfe5f15daa3ed5 [file] [log] [blame]
/* 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 "../crypto/internal.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_supports_cipher(const SSL_CIPHER *cipher) { return 1; }
static void ssl3_expect_flight(SSL *ssl) {}
static void ssl3_received_flight(SSL *ssl) {}
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;
}
OPENSSL_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) {
OPENSSL_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_get_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_queue_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();
}