- /* 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"
-
-
- namespace bssl {
-
- static void ssl3_on_handshake_complete(SSL *ssl) {
- // The handshake should have released its final message.
- assert(!ssl->s3->has_message);
-
- // During the handshake, |hs_buf| is retained. Release if it there is no
- // excess in it. There may be excess left if there server sent Finished and
- // HelloRequest in the same record.
- //
- // TODO(davidben): SChannel does not support this. Reject this case.
- if (ssl->s3->hs_buf && ssl->s3->hs_buf->length == 0) {
- ssl->s3->hs_buf.reset();
- }
- }
-
- static bool ssl3_set_read_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
- // Cipher changes are forbidden if the current epoch has leftover data.
- if (tls_has_unprocessed_handshake_data(ssl)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_BUFFERED_MESSAGES_ON_CIPHER_CHANGE);
- ssl_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
- return false;
- }
-
- OPENSSL_memset(ssl->s3->read_sequence, 0, sizeof(ssl->s3->read_sequence));
- ssl->s3->aead_read_ctx = std::move(aead_ctx);
- return true;
- }
-
- static bool ssl3_set_write_state(SSL *ssl, UniquePtr<SSLAEADContext> aead_ctx) {
- OPENSSL_memset(ssl->s3->write_sequence, 0, sizeof(ssl->s3->write_sequence));
- ssl->s3->aead_write_ctx = std::move(aead_ctx);
- return true;
- }
-
- static const SSL_PROTOCOL_METHOD kTLSProtocolMethod = {
- false /* is_dtls */,
- ssl3_new,
- ssl3_free,
- ssl3_get_message,
- ssl3_next_message,
- ssl3_open_handshake,
- ssl3_open_change_cipher_spec,
- ssl3_open_app_data,
- ssl3_write_app_data,
- ssl3_dispatch_alert,
- ssl3_init_message,
- ssl3_finish_message,
- ssl3_add_message,
- ssl3_add_change_cipher_spec,
- ssl3_add_alert,
- ssl3_flush_flight,
- ssl3_on_handshake_complete,
- ssl3_set_read_state,
- ssl3_set_write_state,
- };
-
- static int ssl_noop_x509_check_client_CA_names(
- STACK_OF(CRYPTO_BUFFER) *names) {
- return 1;
- }
-
- static void ssl_noop_x509_clear(CERT *cert) {}
- static void ssl_noop_x509_free(CERT *cert) {}
- static void ssl_noop_x509_dup(CERT *new_cert, const CERT *cert) {}
- static void ssl_noop_x509_flush_cached_leaf(CERT *cert) {}
- static void ssl_noop_x509_flush_cached_chain(CERT *cert) {}
- static int ssl_noop_x509_session_cache_objects(SSL_SESSION *sess) {
- return 1;
- }
- static int ssl_noop_x509_session_dup(SSL_SESSION *new_session,
- const SSL_SESSION *session) {
- return 1;
- }
- static void ssl_noop_x509_session_clear(SSL_SESSION *session) {}
- static int ssl_noop_x509_session_verify_cert_chain(SSL_SESSION *session,
- SSL *ssl,
- uint8_t *out_alert) {
- return 0;
- }
-
- static void ssl_noop_x509_hs_flush_cached_ca_names(SSL_HANDSHAKE *hs) {}
- static int ssl_noop_x509_ssl_new(SSL *ctx) { return 1; }
- static void ssl_noop_x509_ssl_free(SSL *ctx) { }
- static void ssl_noop_x509_ssl_flush_cached_client_CA(SSL *ssl) {}
- static int ssl_noop_x509_ssl_auto_chain_if_needed(SSL *ssl) { return 1; }
- static int ssl_noop_x509_ssl_ctx_new(SSL_CTX *ctx) { return 1; }
- static void ssl_noop_x509_ssl_ctx_free(SSL_CTX *ctx) { }
- static void ssl_noop_x509_ssl_ctx_flush_cached_client_CA(SSL_CTX *ctx) {}
-
- const SSL_X509_METHOD ssl_noop_x509_method = {
- ssl_noop_x509_check_client_CA_names,
- ssl_noop_x509_clear,
- ssl_noop_x509_free,
- ssl_noop_x509_dup,
- ssl_noop_x509_flush_cached_chain,
- ssl_noop_x509_flush_cached_leaf,
- ssl_noop_x509_session_cache_objects,
- ssl_noop_x509_session_dup,
- ssl_noop_x509_session_clear,
- ssl_noop_x509_session_verify_cert_chain,
- ssl_noop_x509_hs_flush_cached_ca_names,
- ssl_noop_x509_ssl_new,
- ssl_noop_x509_ssl_free,
- ssl_noop_x509_ssl_flush_cached_client_CA,
- ssl_noop_x509_ssl_auto_chain_if_needed,
- ssl_noop_x509_ssl_ctx_new,
- ssl_noop_x509_ssl_ctx_free,
- ssl_noop_x509_ssl_ctx_flush_cached_client_CA,
- };
-
- } // namespace bssl
-
- using namespace bssl;
-
- const SSL_METHOD *TLS_method(void) {
- static const SSL_METHOD kMethod = {
- 0,
- &kTLSProtocolMethod,
- &ssl_crypto_x509_method,
- };
- return &kMethod;
- }
-
- const SSL_METHOD *SSLv23_method(void) {
- return TLS_method();
- }
-
- const SSL_METHOD *TLS_with_buffers_method(void) {
- static const SSL_METHOD kMethod = {
- 0,
- &kTLSProtocolMethod,
- &ssl_noop_x509_method,
- };
- return &kMethod;
- }
-
- // Legacy version-locked methods.
-
- const SSL_METHOD *TLSv1_2_method(void) {
- static const SSL_METHOD kMethod = {
- TLS1_2_VERSION,
- &kTLSProtocolMethod,
- &ssl_crypto_x509_method,
- };
- return &kMethod;
- }
-
- const SSL_METHOD *TLSv1_1_method(void) {
- static const SSL_METHOD kMethod = {
- TLS1_1_VERSION,
- &kTLSProtocolMethod,
- &ssl_crypto_x509_method,
- };
- return &kMethod;
- }
-
- const SSL_METHOD *TLSv1_method(void) {
- static const SSL_METHOD kMethod = {
- TLS1_VERSION,
- &kTLSProtocolMethod,
- &ssl_crypto_x509_method,
- };
- 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 *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 *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();
- }
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