6a599222bb
This also "reverts" some FreeBSD local changes so we should now be back to using entirely stock OpenSSL. The local changes were simple $FreeBSD$ lines additions, which were required in the CVS days, and the patch for FreeBSD-SA-09:15.ssl which has been superseded with OpenSSL 0.9.8m's RFC5746 'TLS renegotiation extension' support. MFC after: 3 weeks
293 lines
11 KiB
C
293 lines
11 KiB
C
/* 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).
|
|
*
|
|
*/
|
|
#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);
|
|
#ifdef OPENSSL_RI_DEBUG
|
|
fprintf(stderr, "%s RI extension sent by client\n",
|
|
s->s3->previous_client_finished_len ? "Non-empty" : "Empty");
|
|
#endif
|
|
}
|
|
|
|
*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 length byte */
|
|
if(len < 1)
|
|
{
|
|
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_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_HANDSHAKE_FAILURE;
|
|
return 0;
|
|
}
|
|
#ifdef OPENSSL_RI_DEBUG
|
|
fprintf(stderr, "%s RI extension received by server\n",
|
|
ilen ? "Non-empty" : "Empty");
|
|
#endif
|
|
|
|
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);
|
|
return 0;
|
|
}
|
|
|
|
/* Length byte */
|
|
*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);
|
|
p += s->s3->previous_client_finished_len;
|
|
|
|
memcpy(p, s->s3->previous_server_finished,
|
|
s->s3->previous_server_finished_len);
|
|
#ifdef OPENSSL_RI_DEBUG
|
|
fprintf(stderr, "%s RI extension sent by server\n",
|
|
s->s3->previous_client_finished_len ? "Non-empty" : "Empty");
|
|
#endif
|
|
}
|
|
|
|
*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, unsigned char *d, int len,
|
|
int *al)
|
|
{
|
|
int expected_len=s->s3->previous_client_finished_len
|
|
+ s->s3->previous_server_finished_len;
|
|
int ilen;
|
|
|
|
/* 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;
|
|
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;
|
|
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_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_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;
|
|
return 0;
|
|
}
|
|
#ifdef OPENSSL_RI_DEBUG
|
|
fprintf(stderr, "%s RI extension received by client\n",
|
|
ilen ? "Non-empty" : "Empty");
|
|
#endif
|
|
s->s3->send_connection_binding=1;
|
|
|
|
return 1;
|
|
}
|