Handle BN_mod_word failures.

[openssl.git] / ssl / t1_ext.c

diff --git a/ssl/t1_ext.c b/ssl/t1_ext.c
index e9933976cf5e5d5b92be32ac2a955194b3699d8e..2db949d8acc599b1bb91bd0817e73c1ce0990e5c 100644 (file)
--- a/ssl/t1_ext.c
+++ b/ssl/t1_ext.c
@@ -1,55 +1,10 @@
-/* ====================================================================
- * Copyright (c) 2014 The OpenSSL Project.  All rights reserved.
- *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
 /* Custom extension utility functions */
@@ -205,7 +160,7 @@ static int custom_ext_meth_add(custom_ext_methods *exts,
                                void *add_arg,
                                custom_ext_parse_cb parse_cb, void *parse_arg)
 {
-    custom_ext_method *meth;
+    custom_ext_method *meth, *tmp;
     /*
      * Check application error: if add_cb is not set free_cb will never be
      * called.
@@ -225,15 +180,17 @@ static int custom_ext_meth_add(custom_ext_methods *exts,
     /* Search for duplicate */
     if (custom_ext_find(exts, ext_type))
         return 0;
-    exts->meths = OPENSSL_realloc(exts->meths,
-                                  (exts->meths_count +
-                                   1) * sizeof(custom_ext_method));
+    tmp = OPENSSL_realloc(exts->meths,
+                          (exts->meths_count + 1) * sizeof(custom_ext_method));
 
-    if (!exts->meths) {
+    if (tmp == NULL) {
+        OPENSSL_free(exts->meths);
+        exts->meths = NULL;
         exts->meths_count = 0;
         return 0;
     }
 
+    exts->meths = tmp;
     meth = exts->meths + exts->meths_count;
     memset(meth, 0, sizeof(*meth));
     meth->parse_cb = parse_cb;
@@ -293,7 +250,9 @@ int SSL_extension_supported(unsigned int ext_type)
     case TLSEXT_TYPE_ec_point_formats:
     case TLSEXT_TYPE_elliptic_curves:
     case TLSEXT_TYPE_heartbeat:
+#ifndef OPENSSL_NO_NEXTPROTONEG
     case TLSEXT_TYPE_next_proto_neg:
+#endif
     case TLSEXT_TYPE_padding:
     case TLSEXT_TYPE_renegotiate:
     case TLSEXT_TYPE_server_name: