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| 1 /* ssl/t1_reneg.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 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. | |
| 8 * | |
| 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). | |
| 15 * | |
| 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. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 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)" | |
| 40 * | |
| 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 | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 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.] | |
| 57 */ | |
| 58 /* ==================================================================== | |
| 59 * Copyright (c) 1998-2009 The OpenSSL Project. All rights reserved. | |
| 60 * | |
| 61 * Redistribution and use in source and binary forms, with or without | |
| 62 * modification, are permitted provided that the following conditions | |
| 63 * are met: | |
| 64 * | |
| 65 * 1. Redistributions of source code must retain the above copyright | |
| 66 * notice, this list of conditions and the following disclaimer. | |
| 67 * | |
| 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 | |
| 71 * distribution. | |
| 72 * | |
| 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/)" | |
| 77 * | |
| 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. | |
| 82 * | |
| 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. | |
| 86 * | |
| 87 * 6. Redistributions of any form whatsoever must retain the following | |
| 88 * acknowledgment: | |
| 89 * "This product includes software developed by the OpenSSL Project | |
| 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
| 91 * | |
| 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 * ==================================================================== | |
| 105 * | |
| 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). | |
| 109 * | |
| 110 */ | |
| 111 #include <stdio.h> | |
| 112 #include <openssl/objects.h> | |
| 113 #include "ssl_locl.h" | |
| 114 | |
| 115 /* Add the client's renegotiation binding */ | |
| 116 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len, | |
| 117 int maxlen) | |
| 118 { | |
| 119 if(p) | |
| 120 { | |
| 121 if((s->s3->previous_client_finished_len+1) > maxlen) | |
| 122 { | |
| 123 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_E
XT_TOO_LONG); | |
| 124 return 0; | |
| 125 } | |
| 126 | |
| 127 /* Length byte */ | |
| 128 *p = s->s3->previous_client_finished_len; | |
| 129 p++; | |
| 130 | |
| 131 memcpy(p, s->s3->previous_client_finished, | |
| 132 s->s3->previous_client_finished_len); | |
| 133 #ifdef OPENSSL_RI_DEBUG | |
| 134 fprintf(stderr, "%s RI extension sent by client\n", | |
| 135 s->s3->previous_client_finished_len ? "Non-empty" : "Empty"); | |
| 136 #endif | |
| 137 } | |
| 138 | |
| 139 *len=s->s3->previous_client_finished_len + 1; | |
| 140 | |
| 141 | |
| 142 return 1; | |
| 143 } | |
| 144 | |
| 145 /* Parse the client's renegotiation binding and abort if it's not | |
| 146 right */ | |
| 147 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len, | |
| 148 int *al) | |
| 149 { | |
| 150 int ilen; | |
| 151 | |
| 152 /* Parse the length byte */ | |
| 153 if(len < 1) | |
| 154 { | |
| 155 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_E
NCODING_ERR); | |
| 156 *al=SSL_AD_ILLEGAL_PARAMETER; | |
| 157 return 0; | |
| 158 } | |
| 159 ilen = *d; | |
| 160 d++; | |
| 161 | |
| 162 /* Consistency check */ | |
| 163 if((ilen+1) != len) | |
| 164 { | |
| 165 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_E
NCODING_ERR); | |
| 166 *al=SSL_AD_ILLEGAL_PARAMETER; | |
| 167 return 0; | |
| 168 } | |
| 169 | |
| 170 /* Check that the extension matches */ | |
| 171 if(ilen != s->s3->previous_client_finished_len) | |
| 172 { | |
| 173 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_M
ISMATCH); | |
| 174 *al=SSL_AD_HANDSHAKE_FAILURE; | |
| 175 return 0; | |
| 176 } | |
| 177 | |
| 178 if(memcmp(d, s->s3->previous_client_finished, | |
| 179 s->s3->previous_client_finished_len)) | |
| 180 { | |
| 181 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_M
ISMATCH); | |
| 182 *al=SSL_AD_HANDSHAKE_FAILURE; | |
| 183 return 0; | |
| 184 } | |
| 185 #ifdef OPENSSL_RI_DEBUG | |
| 186 fprintf(stderr, "%s RI extension received by server\n", | |
| 187 ilen ? "Non-empty" : "Empty"); | |
| 188 #endif | |
| 189 | |
| 190 s->s3->send_connection_binding=1; | |
| 191 | |
| 192 return 1; | |
| 193 } | |
| 194 | |
| 195 /* Add the server's renegotiation binding */ | |
| 196 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len, | |
| 197 int maxlen) | |
| 198 { | |
| 199 if(p) | |
| 200 { | |
| 201 if((s->s3->previous_client_finished_len + | |
| 202 s->s3->previous_server_finished_len + 1) > maxlen) | |
| 203 { | |
| 204 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATE_E
XT_TOO_LONG); | |
| 205 return 0; | |
| 206 } | |
| 207 | |
| 208 /* Length byte */ | |
| 209 *p = s->s3->previous_client_finished_len + s->s3->previous_server_finish
ed_len; | |
| 210 p++; | |
| 211 | |
| 212 memcpy(p, s->s3->previous_client_finished, | |
| 213 s->s3->previous_client_finished_len); | |
| 214 p += s->s3->previous_client_finished_len; | |
| 215 | |
| 216 memcpy(p, s->s3->previous_server_finished, | |
| 217 s->s3->previous_server_finished_len); | |
| 218 #ifdef OPENSSL_RI_DEBUG | |
| 219 fprintf(stderr, "%s RI extension sent by server\n", | |
| 220 s->s3->previous_client_finished_len ? "Non-empty" : "Empty"); | |
| 221 #endif | |
| 222 } | |
| 223 | |
| 224 *len=s->s3->previous_client_finished_len | |
| 225 + s->s3->previous_server_finished_len + 1; | |
| 226 | |
| 227 return 1; | |
| 228 } | |
| 229 | |
| 230 /* Parse the server's renegotiation binding and abort if it's not | |
| 231 right */ | |
| 232 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len, | |
| 233 int *al) | |
| 234 { | |
| 235 int expected_len=s->s3->previous_client_finished_len | |
| 236 + s->s3->previous_server_finished_len; | |
| 237 int ilen; | |
| 238 | |
| 239 /* Check for logic errors */ | |
| 240 OPENSSL_assert(!expected_len || s->s3->previous_client_finished_len); | |
| 241 OPENSSL_assert(!expected_len || s->s3->previous_server_finished_len); | |
| 242 | |
| 243 /* Parse the length byte */ | |
| 244 if(len < 1) | |
| 245 { | |
| 246 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_E
NCODING_ERR); | |
| 247 *al=SSL_AD_ILLEGAL_PARAMETER; | |
| 248 return 0; | |
| 249 } | |
| 250 ilen = *d; | |
| 251 d++; | |
| 252 | |
| 253 /* Consistency check */ | |
| 254 if(ilen+1 != len) | |
| 255 { | |
| 256 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_E
NCODING_ERR); | |
| 257 *al=SSL_AD_ILLEGAL_PARAMETER; | |
| 258 return 0; | |
| 259 } | |
| 260 | |
| 261 /* Check that the extension matches */ | |
| 262 if(ilen != expected_len) | |
| 263 { | |
| 264 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_M
ISMATCH); | |
| 265 *al=SSL_AD_HANDSHAKE_FAILURE; | |
| 266 return 0; | |
| 267 } | |
| 268 | |
| 269 if(memcmp(d, s->s3->previous_client_finished, | |
| 270 s->s3->previous_client_finished_len)) | |
| 271 { | |
| 272 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_M
ISMATCH); | |
| 273 *al=SSL_AD_HANDSHAKE_FAILURE; | |
| 274 return 0; | |
| 275 } | |
| 276 d += s->s3->previous_client_finished_len; | |
| 277 | |
| 278 if(memcmp(d, s->s3->previous_server_finished, | |
| 279 s->s3->previous_server_finished_len)) | |
| 280 { | |
| 281 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT,SSL_R_RENEGOTIATION_M
ISMATCH); | |
| 282 *al=SSL_AD_ILLEGAL_PARAMETER; | |
| 283 return 0; | |
| 284 } | |
| 285 #ifdef OPENSSL_RI_DEBUG | |
| 286 fprintf(stderr, "%s RI extension received by client\n", | |
| 287 ilen ? "Non-empty" : "Empty"); | |
| 288 #endif | |
| 289 s->s3->send_connection_binding=1; | |
| 290 | |
| 291 return 1; | |
| 292 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master