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Diffstat (limited to 'lib/mbedtls-2.27.0/library/ssl_cache.c')
-rw-r--r--lib/mbedtls-2.27.0/library/ssl_cache.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/lib/mbedtls-2.27.0/library/ssl_cache.c b/lib/mbedtls-2.27.0/library/ssl_cache.c
deleted file mode 100644
index 32188cf..0000000
--- a/lib/mbedtls-2.27.0/library/ssl_cache.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * SSL session cache implementation
- *
- * Copyright The Mbed TLS Contributors
- * 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.
- */
-/*
- * These session callbacks use a simple chained list
- * to store and retrieve the session information.
- */
-
-#include "common.h"
-
-#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 "mbedtls/ssl_internal.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->id_len != entry->session.id_len ||
- memcmp( session->id, entry->session.id,
- entry->session.id_len ) != 0 )
- {
- continue;
- }
-
- ret = mbedtls_ssl_session_copy( session, &entry->session );
- if( ret != 0 )
- {
- ret = 1;
- goto exit;
- }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
- defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- /*
- * Restore peer certificate (without rest of the original chain)
- */
- if( entry->peer_cert.p != NULL )
- {
- /* `session->peer_cert` is NULL after the call to
- * mbedtls_ssl_session_copy(), because cache entries
- * have the `peer_cert` field set to 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 && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-
- 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
- }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
- defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- /*
- * 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) );
- }
-#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-
- /* Copy the entire session; this temporarily makes a copy of the
- * X.509 CRT structure even though we only want to store the raw CRT.
- * This inefficiency will go away as soon as we implement on-demand
- * parsing of CRTs, in which case there's no need for the `peer_cert`
- * field anymore in the first place, and we're done after this call. */
- ret = mbedtls_ssl_session_copy( &cur->session, session );
- if( ret != 0 )
- {
- ret = 1;
- goto exit;
- }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
- defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- /* If present, free the X.509 structure and only store the raw CRT data. */
- if( cur->session.peer_cert != NULL )
- {
- cur->peer_cert.p =
- mbedtls_calloc( 1, cur->session.peer_cert->raw.len );
- if( cur->peer_cert.p == NULL )
- {
- ret = 1;
- goto exit;
- }
-
- memcpy( cur->peer_cert.p,
- cur->session.peer_cert->raw.p,
- cur->session.peer_cert->raw.len );
- cur->peer_cert.len = session->peer_cert->raw.len;
-
- mbedtls_x509_crt_free( cur->session.peer_cert );
- mbedtls_free( cur->session.peer_cert );
- cur->session.peer_cert = NULL;
- }
-#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-
- 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) && \
- defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- mbedtls_free( prv->peer_cert.p );
-#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-
- mbedtls_free( prv );
- }
-
-#if defined(MBEDTLS_THREADING_C)
- mbedtls_mutex_free( &cache->mutex );
-#endif
- cache->chain = NULL;
-}
-
-#endif /* MBEDTLS_SSL_CACHE_C */
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