-/* ssl/t1_reneg.c */
-/* 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.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2009 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 1995-2016 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
*/
+
#include <stdio.h>
#include <openssl/objects.h>
#include "ssl_locl.h"
-/* Add the client's renegotiation binding */
-int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
- int maxlen)
- {
- if(p)
- {
- if((s->s3->previous_client_finished_len+1) > maxlen)
- {
- SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_EXT_TOO_LONG);
- return 0;
- }
-
- /* Length byte */
- *p = s->s3->previous_client_finished_len;
- p++;
-
- memcpy(p, s->s3->previous_client_finished,
- s->s3->previous_client_finished_len);
- }
-
- *len=s->s3->previous_client_finished_len + 1;
-
- return 1;
- }
-
-/* Parse the client's renegotiation binding and abort if it's not
- right */
-int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
- int *al)
- {
- int ilen;
+/*
+ * Parse the client's renegotiation binding and abort if it's not right
+ */
+int ssl_parse_clienthello_renegotiate_ext(SSL *s, PACKET *pkt, int *al)
+{
+ unsigned int ilen;
+ const unsigned char *d;
/* Parse the length byte */
- if(len < 1)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (!PACKET_get_1(pkt, &ilen)
+ || !PACKET_get_bytes(pkt, &d, ilen)) {
+ SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_ENCODING_ERR);
+ *al = SSL_AD_ILLEGAL_PARAMETER;
return 0;
- }
- ilen = *d;
- d++;
-
- /* Consistency check */
- if((ilen+1) != len)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
- *al=SSL_AD_ILLEGAL_PARAMETER;
- return 0;
- }
+ }
/* Check that the extension matches */
- if(ilen != s->s3->previous_client_finished_len)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (ilen != s->s3->previous_client_finished_len) {
+ SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_MISMATCH);
+ *al = SSL_AD_HANDSHAKE_FAILURE;
return 0;
- }
-
- if(memcmp(d, s->s3->previous_client_finished,
- s->s3->previous_client_finished_len))
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ }
+
+ if (memcmp(d, s->s3->previous_client_finished,
+ s->s3->previous_client_finished_len)) {
+ SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_MISMATCH);
+ *al = SSL_AD_HANDSHAKE_FAILURE;
return 0;
- }
+ }
- s->s3->send_connection_binding=1;
+ s->s3->send_connection_binding = 1;
return 1;
- }
+}
/* Add the server's renegotiation binding */
int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
- int maxlen)
- {
- if(p)
- {
- if((s->s3->previous_client_finished_len +
- s->s3->previous_server_finished_len + 1) > maxlen)
- {
- SSLerr(SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_EXT_TOO_LONG);
+ int maxlen)
+{
+ if (p) {
+ if ((s->s3->previous_client_finished_len +
+ s->s3->previous_server_finished_len + 1) > maxlen) {
+ SSLerr(SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATE_EXT_TOO_LONG);
return 0;
- }
-
+ }
+
/* Length byte */
- *p = s->s3->previous_client_finished_len + s->s3->previous_server_finished_len;
+ *p = s->s3->previous_client_finished_len +
+ s->s3->previous_server_finished_len;
p++;
memcpy(p, s->s3->previous_client_finished,
- s->s3->previous_client_finished_len);
+ s->s3->previous_client_finished_len);
p += s->s3->previous_client_finished_len;
memcpy(p, s->s3->previous_server_finished,
- s->s3->previous_server_finished_len);
- }
-
- *len=s->s3->previous_client_finished_len
- + s->s3->previous_server_finished_len + 1;
-
- return 1;
+ s->s3->previous_server_finished_len);
}
-/* Parse the server's renegotiation binding and abort if it's not
- right */
-int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
- int *al)
- {
- int expected_len=s->s3->previous_client_finished_len
- + s->s3->previous_server_finished_len;
- int ilen;
+ *len = s->s3->previous_client_finished_len
+ + s->s3->previous_server_finished_len + 1;
+
+ return 1;
+}
+
+/*
+ * Parse the server's renegotiation binding and abort if it's not right
+ */
+int ssl_parse_serverhello_renegotiate_ext(SSL *s, PACKET *pkt, int *al)
+{
+ unsigned int expected_len = s->s3->previous_client_finished_len
+ + s->s3->previous_server_finished_len;
+ unsigned int ilen;
+ const unsigned char *data;
/* Check for logic errors */
OPENSSL_assert(!expected_len || s->s3->previous_client_finished_len);
OPENSSL_assert(!expected_len || s->s3->previous_server_finished_len);
-
+
/* Parse the length byte */
- if(len < 1)
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (!PACKET_get_1(pkt, &ilen)) {
+ SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_ENCODING_ERR);
+ *al = SSL_AD_ILLEGAL_PARAMETER;
return 0;
- }
- ilen = *d;
- d++;
+ }
/* Consistency check */
- if(ilen+1 != len)
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (PACKET_remaining(pkt) != ilen) {
+ SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_ENCODING_ERR);
+ *al = SSL_AD_ILLEGAL_PARAMETER;
return 0;
- }
-
+ }
+
/* Check that the extension matches */
- if(ilen != expected_len)
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (ilen != expected_len) {
+ SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_MISMATCH);
+ *al = SSL_AD_HANDSHAKE_FAILURE;
return 0;
- }
+ }
- if(memcmp(d, s->s3->previous_client_finished,
- s->s3->previous_client_finished_len))
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (!PACKET_get_bytes(pkt, &data, s->s3->previous_client_finished_len)
+ || memcmp(data, s->s3->previous_client_finished,
+ s->s3->previous_client_finished_len) != 0) {
+ SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_MISMATCH);
+ *al = SSL_AD_HANDSHAKE_FAILURE;
return 0;
- }
- d += s->s3->previous_client_finished_len;
+ }
- if(memcmp(d, s->s3->previous_server_finished,
- s->s3->previous_server_finished_len))
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
- *al=SSL_AD_ILLEGAL_PARAMETER;
+ if (!PACKET_get_bytes(pkt, &data, s->s3->previous_server_finished_len)
+ || memcmp(data, s->s3->previous_server_finished,
+ s->s3->previous_server_finished_len) != 0) {
+ SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,
+ SSL_R_RENEGOTIATION_MISMATCH);
+ *al = SSL_AD_ILLEGAL_PARAMETER;
return 0;
- }
+ }
+ s->s3->send_connection_binding = 1;
return 1;
- }
+}
projects / openssl.git / blobdiff