2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2009 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
112 #include <openssl/objects.h>
113 #include "ssl_locl.h"
115 /* Add the client's renegotiation binding */
116 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
121 if((s->s3->previous_client_finished_len+1) > maxlen)
123 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_EXT_TOO_LONG);
128 *p = s->s3->previous_client_finished_len;
131 memcpy(p, s->s3->previous_client_finished,
132 s->s3->previous_client_finished_len);
135 *len=s->s3->previous_client_finished_len + 1;
140 /* Parse the client's renegotiation binding and abort if it's not
142 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
147 /* Parse the length byte */
150 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
151 *al=SSL_AD_ILLEGAL_PARAMETER;
157 /* Consistency check */
160 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
161 *al=SSL_AD_ILLEGAL_PARAMETER;
165 /* Check that the extension matches */
166 if(ilen != s->s3->previous_client_finished_len)
168 SSLerr(SSL_F_PARSE_CLIENT_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
169 *al=SSL_AD_ILLEGAL_PARAMETER;
173 if(memcmp(d, s->s3->previous_client_finished,
174 s->s3->previous_client_finished_len))
176 SSLerr(SSL_F_PARSE_CLIENT_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
177 *al=SSL_AD_ILLEGAL_PARAMETER;
181 s->s3->send_connection_binding=1;
186 /* Add the server's renegotiation binding */
187 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
192 if((s->s3->previous_client_finished_len +
193 s->s3->previous_server_finished_len + 1) > maxlen)
195 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_EXT_TOO_LONG);
200 *p = s->s3->previous_client_finished_len + s->s3->previous_server_finished_len;
203 memcpy(p, s->s3->previous_client_finished,
204 s->s3->previous_client_finished_len);
205 p += s->s3->previous_client_finished_len;
207 memcpy(p, s->s3->previous_server_finished,
208 s->s3->previous_server_finished_len);
211 *len=s->s3->previous_client_finished_len
212 + s->s3->previous_server_finished_len + 1;
217 /* Parse the server's renegotiation binding and abort if it's not
219 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
222 int expected_len=s->s3->previous_client_finished_len
223 + s->s3->previous_server_finished_len;
226 /* Check for logic errors */
227 OPENSSL_assert(!expected_len || s->s3->previous_client_finished_len);
228 OPENSSL_assert(!expected_len || s->s3->previous_server_finished_len);
230 /* Parse the length byte */
233 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
234 *al=SSL_AD_ILLEGAL_PARAMETER;
240 /* Consistency check */
243 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_ENCODING_ERR);
244 *al=SSL_AD_ILLEGAL_PARAMETER;
248 /* Check that the extension matches */
249 if(ilen != expected_len)
251 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
252 *al=SSL_AD_ILLEGAL_PARAMETER;
256 if(memcmp(d, s->s3->previous_client_finished,
257 s->s3->previous_client_finished_len))
259 SSLerr(SSL_F_PARSE_CLIENT_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
260 *al=SSL_AD_ILLEGAL_PARAMETER;
263 d += s->s3->previous_client_finished_len;
265 if(memcmp(d, s->s3->previous_server_finished,
266 s->s3->previous_server_finished_len))
268 SSLerr(SSL_F_PARSE_SERVER_HELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_MISMATCH);
269 *al=SSL_AD_ILLEGAL_PARAMETER;