Diff: mbedtls/source/ssl_cache.c

Revision:

20:9d2428bde914

Parent:

19:6bc40ac8b054

Child:

21:552b630becf2

--- a/mbedtls/source/ssl_cache.c	Thu Nov 17 18:35:51 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,326 +0,0 @@
-/*
- *  SSL session cache implementation
- *
- *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
- *  SPDX-License-Identifier: Apache-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.
- *
- *  This file is part of mbed TLS (https://tls.mbed.org)
- */
-/*
- * 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 = 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
-}
-
-#endif /* MBEDTLS_SSL_CACHE_C */