Something went wrong. Try again.
Reactos
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353/* * SSL session cache implementation * * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later * * This file is provided under the Apache License 2.0, or the * GNU General Public License v2.0 or later. * * ********** * Apache License 2.0: * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * ********** * * ********** * GNU General Public License v2.0 or later: * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * ********** *//* * These session callbacks use a simple chained list * to store and retrieve the session information. */
#if !defined(MBEDTLS_CONFIG_FILE)#include "mbedtls/config.h"#else#include MBEDTLS_CONFIG_FILE#endif
#if defined(MBEDTLS_SSL_CACHE_C)
#if defined(MBEDTLS_PLATFORM_C)#include "mbedtls/platform.h"#else#include <stdlib.h>#define mbedtls_calloc calloc#define mbedtls_free free#endif
#include "mbedtls/ssl_cache.h"
#include <string.h>
void mbedtls_ssl_cache_init( mbedtls_ssl_cache_context *cache ){ memset( cache, 0, sizeof( mbedtls_ssl_cache_context ) );
cache->timeout = MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT; cache->max_entries = MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES;
#if defined(MBEDTLS_THREADING_C) mbedtls_mutex_init( &cache->mutex );#endif}
int mbedtls_ssl_cache_get( void *data, mbedtls_ssl_session *session ){ int ret = 1;#if defined(MBEDTLS_HAVE_TIME) mbedtls_time_t t = mbedtls_time( NULL );#endif mbedtls_ssl_cache_context *cache = (mbedtls_ssl_cache_context *) data; mbedtls_ssl_cache_entry *cur, *entry;
#if defined(MBEDTLS_THREADING_C) if( mbedtls_mutex_lock( &cache->mutex ) != 0 ) return( 1 );#endif
cur = cache->chain; entry = NULL;
while( cur != NULL ) { entry = cur; cur = cur->next;
#if defined(MBEDTLS_HAVE_TIME) if( cache->timeout != 0 && (int) ( t - entry->timestamp ) > cache->timeout ) continue;#endif
if( session->ciphersuite != entry->session.ciphersuite || session->compression != entry->session.compression || session->id_len != entry->session.id_len ) continue;
if( memcmp( session->id, entry->session.id, entry->session.id_len ) != 0 ) continue;
memcpy( session->master, entry->session.master, 48 );
session->verify_result = entry->session.verify_result;
#if defined(MBEDTLS_X509_CRT_PARSE_C) /* * Restore peer certificate (without rest of the original chain) */ if( entry->peer_cert.p != NULL ) { if( ( session->peer_cert = mbedtls_calloc( 1, sizeof(mbedtls_x509_crt) ) ) == NULL ) { ret = 1; goto exit; }
mbedtls_x509_crt_init( session->peer_cert ); if( mbedtls_x509_crt_parse( session->peer_cert, entry->peer_cert.p, entry->peer_cert.len ) != 0 ) { mbedtls_free( session->peer_cert ); session->peer_cert = NULL; ret = 1; goto exit; } }#endif /* MBEDTLS_X509_CRT_PARSE_C */
ret = 0; goto exit; }
exit:#if defined(MBEDTLS_THREADING_C) if( mbedtls_mutex_unlock( &cache->mutex ) != 0 ) ret = 1;#endif
return( ret );}
int mbedtls_ssl_cache_set( void *data, const mbedtls_ssl_session *session ){ int ret = 1;#if defined(MBEDTLS_HAVE_TIME) mbedtls_time_t t = mbedtls_time( NULL ), oldest = 0; mbedtls_ssl_cache_entry *old = NULL;#endif mbedtls_ssl_cache_context *cache = (mbedtls_ssl_cache_context *) data; mbedtls_ssl_cache_entry *cur, *prv; int count = 0;
#if defined(MBEDTLS_THREADING_C) if( ( ret = mbedtls_mutex_lock( &cache->mutex ) ) != 0 ) return( ret );#endif
cur = cache->chain; prv = NULL;
while( cur != NULL ) { count++;
#if defined(MBEDTLS_HAVE_TIME) if( cache->timeout != 0 && (int) ( t - cur->timestamp ) > cache->timeout ) { cur->timestamp = t; break; /* expired, reuse this slot, update timestamp */ }#endif
if( memcmp( session->id, cur->session.id, cur->session.id_len ) == 0 ) break; /* client reconnected, keep timestamp for session id */
#if defined(MBEDTLS_HAVE_TIME) if( oldest == 0 || cur->timestamp < oldest ) { oldest = cur->timestamp; old = cur; }#endif
prv = cur; cur = cur->next; }
if( cur == NULL ) {#if defined(MBEDTLS_HAVE_TIME) /* * Reuse oldest entry if max_entries reached */ if( count >= cache->max_entries ) { if( old == NULL ) { ret = 1; goto exit; }
cur = old; }#else /* MBEDTLS_HAVE_TIME */ /* * Reuse first entry in chain if max_entries reached, * but move to last place */ if( count >= cache->max_entries ) { if( cache->chain == NULL ) { ret = 1; goto exit; }
cur = cache->chain; cache->chain = cur->next; cur->next = NULL; prv->next = cur; }#endif /* MBEDTLS_HAVE_TIME */ else { /* * max_entries not reached, create new entry */ cur = mbedtls_calloc( 1, sizeof(mbedtls_ssl_cache_entry) ); if( cur == NULL ) { ret = 1; goto exit; }
if( prv == NULL ) cache->chain = cur; else prv->next = cur; }
#if defined(MBEDTLS_HAVE_TIME) cur->timestamp = t;#endif }
memcpy( &cur->session, session, sizeof( mbedtls_ssl_session ) );
#if defined(MBEDTLS_X509_CRT_PARSE_C) /* * If we're reusing an entry, free its certificate first */ if( cur->peer_cert.p != NULL ) { mbedtls_free( cur->peer_cert.p ); memset( &cur->peer_cert, 0, sizeof(mbedtls_x509_buf) ); }
/* * Store peer certificate */ if( session->peer_cert != NULL ) { cur->peer_cert.p = mbedtls_calloc( 1, session->peer_cert->raw.len ); if( cur->peer_cert.p == NULL ) { ret = 1; goto exit; }
memcpy( cur->peer_cert.p, session->peer_cert->raw.p, session->peer_cert->raw.len ); cur->peer_cert.len = session->peer_cert->raw.len;
cur->session.peer_cert = NULL; }#endif /* MBEDTLS_X509_CRT_PARSE_C */
ret = 0;
exit:#if defined(MBEDTLS_THREADING_C) if( mbedtls_mutex_unlock( &cache->mutex ) != 0 ) ret = 1;#endif
return( ret );}
#if defined(MBEDTLS_HAVE_TIME)void mbedtls_ssl_cache_set_timeout( mbedtls_ssl_cache_context *cache, int timeout ){ if( timeout < 0 ) timeout = 0;
cache->timeout = timeout;}#endif /* MBEDTLS_HAVE_TIME */
void mbedtls_ssl_cache_set_max_entries( mbedtls_ssl_cache_context *cache, int max ){ if( max < 0 ) max = 0;
cache->max_entries = max;}
void mbedtls_ssl_cache_free( mbedtls_ssl_cache_context *cache ){ mbedtls_ssl_cache_entry *cur, *prv;
cur = cache->chain;
while( cur != NULL ) { prv = cur; cur = cur->next;
mbedtls_ssl_session_free( &prv->session );
#if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_free( prv->peer_cert.p );#endif /* MBEDTLS_X509_CRT_PARSE_C */
mbedtls_free( prv ); }
#if defined(MBEDTLS_THREADING_C) mbedtls_mutex_free( &cache->mutex );#endif cache->chain = NULL;}
#endif /* MBEDTLS_SSL_CACHE_C */