Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* ssl/s2_clnt.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) 1998-2001 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 | |
| 112 | #include "ssl_locl.h" |
| 113 | #ifndef OPENSSL_NO_SSL2 |
| 114 | #include <stdio.h> |
| 115 | #include <openssl/rand.h> |
| 116 | #include <openssl/buffer.h> |
| 117 | #include <openssl/objects.h> |
| 118 | #include <openssl/evp.h> |
| 119 | |
| 120 | static const SSL_METHOD *ssl2_get_client_method(int ver); |
| 121 | static int get_server_finished(SSL *s); |
| 122 | static int get_server_verify(SSL *s); |
| 123 | static int get_server_hello(SSL *s); |
| 124 | static int client_hello(SSL *s); |
| 125 | static int client_master_key(SSL *s); |
| 126 | static int client_finished(SSL *s); |
| 127 | static int client_certificate(SSL *s); |
| 128 | static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, |
| 129 | unsigned char *to,int padding); |
| 130 | #define BREAK break |
| 131 | |
| 132 | static const SSL_METHOD *ssl2_get_client_method(int ver) |
| 133 | { |
| 134 | if (ver == SSL2_VERSION) |
| 135 | return(SSLv2_client_method()); |
| 136 | else |
| 137 | return(NULL); |
| 138 | } |
| 139 | |
| 140 | IMPLEMENT_ssl2_meth_func(SSLv2_client_method, |
| 141 | ssl_undefined_function, |
| 142 | ssl2_connect, |
| 143 | ssl2_get_client_method) |
| 144 | |
| 145 | int ssl2_connect(SSL *s) |
| 146 | { |
| 147 | unsigned long l=(unsigned long)time(NULL); |
| 148 | BUF_MEM *buf=NULL; |
| 149 | int ret= -1; |
| 150 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
| 151 | int new_state,state; |
| 152 | |
| 153 | RAND_add(&l,sizeof(l),0); |
| 154 | ERR_clear_error(); |
| 155 | clear_sys_error(); |
| 156 | |
| 157 | if (s->info_callback != NULL) |
| 158 | cb=s->info_callback; |
| 159 | else if (s->ctx->info_callback != NULL) |
| 160 | cb=s->ctx->info_callback; |
| 161 | |
| 162 | /* init things to blank */ |
| 163 | s->in_handshake++; |
| 164 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
| 165 | |
| 166 | for (;;) |
| 167 | { |
| 168 | state=s->state; |
| 169 | |
| 170 | switch (s->state) |
| 171 | { |
| 172 | case SSL_ST_BEFORE: |
| 173 | case SSL_ST_CONNECT: |
| 174 | case SSL_ST_BEFORE|SSL_ST_CONNECT: |
| 175 | case SSL_ST_OK|SSL_ST_CONNECT: |
| 176 | |
| 177 | s->server=0; |
| 178 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
| 179 | |
| 180 | s->version=SSL2_VERSION; |
| 181 | s->type=SSL_ST_CONNECT; |
| 182 | |
| 183 | buf=s->init_buf; |
| 184 | if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL)) |
| 185 | { |
| 186 | ret= -1; |
| 187 | goto end; |
| 188 | } |
| 189 | if (!BUF_MEM_grow(buf, |
| 190 | SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) |
| 191 | { |
| 192 | if (buf == s->init_buf) |
| 193 | buf=NULL; |
| 194 | ret= -1; |
| 195 | goto end; |
| 196 | } |
| 197 | s->init_buf=buf; |
| 198 | buf=NULL; |
| 199 | s->init_num=0; |
| 200 | s->state=SSL2_ST_SEND_CLIENT_HELLO_A; |
| 201 | s->ctx->stats.sess_connect++; |
| 202 | s->handshake_func=ssl2_connect; |
| 203 | BREAK; |
| 204 | |
| 205 | case SSL2_ST_SEND_CLIENT_HELLO_A: |
| 206 | case SSL2_ST_SEND_CLIENT_HELLO_B: |
| 207 | s->shutdown=0; |
| 208 | ret=client_hello(s); |
| 209 | if (ret <= 0) goto end; |
| 210 | s->init_num=0; |
| 211 | s->state=SSL2_ST_GET_SERVER_HELLO_A; |
| 212 | BREAK; |
| 213 | |
| 214 | case SSL2_ST_GET_SERVER_HELLO_A: |
| 215 | case SSL2_ST_GET_SERVER_HELLO_B: |
| 216 | ret=get_server_hello(s); |
| 217 | if (ret <= 0) goto end; |
| 218 | s->init_num=0; |
| 219 | if (!s->hit) /* new session */ |
| 220 | { |
| 221 | s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A; |
| 222 | BREAK; |
| 223 | } |
| 224 | else |
| 225 | { |
| 226 | s->state=SSL2_ST_CLIENT_START_ENCRYPTION; |
| 227 | break; |
| 228 | } |
| 229 | |
| 230 | case SSL2_ST_SEND_CLIENT_MASTER_KEY_A: |
| 231 | case SSL2_ST_SEND_CLIENT_MASTER_KEY_B: |
| 232 | ret=client_master_key(s); |
| 233 | if (ret <= 0) goto end; |
| 234 | s->init_num=0; |
| 235 | s->state=SSL2_ST_CLIENT_START_ENCRYPTION; |
| 236 | break; |
| 237 | |
| 238 | case SSL2_ST_CLIENT_START_ENCRYPTION: |
| 239 | /* Ok, we now have all the stuff needed to |
| 240 | * start encrypting, so lets fire it up :-) */ |
| 241 | if (!ssl2_enc_init(s,1)) |
| 242 | { |
| 243 | ret= -1; |
| 244 | goto end; |
| 245 | } |
| 246 | s->s2->clear_text=0; |
| 247 | s->state=SSL2_ST_SEND_CLIENT_FINISHED_A; |
| 248 | break; |
| 249 | |
| 250 | case SSL2_ST_SEND_CLIENT_FINISHED_A: |
| 251 | case SSL2_ST_SEND_CLIENT_FINISHED_B: |
| 252 | ret=client_finished(s); |
| 253 | if (ret <= 0) goto end; |
| 254 | s->init_num=0; |
| 255 | s->state=SSL2_ST_GET_SERVER_VERIFY_A; |
| 256 | break; |
| 257 | |
| 258 | case SSL2_ST_GET_SERVER_VERIFY_A: |
| 259 | case SSL2_ST_GET_SERVER_VERIFY_B: |
| 260 | ret=get_server_verify(s); |
| 261 | if (ret <= 0) goto end; |
| 262 | s->init_num=0; |
| 263 | s->state=SSL2_ST_GET_SERVER_FINISHED_A; |
| 264 | break; |
| 265 | |
| 266 | case SSL2_ST_GET_SERVER_FINISHED_A: |
| 267 | case SSL2_ST_GET_SERVER_FINISHED_B: |
| 268 | ret=get_server_finished(s); |
| 269 | if (ret <= 0) goto end; |
| 270 | break; |
| 271 | |
| 272 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_A: |
| 273 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_B: |
| 274 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_C: |
| 275 | case SSL2_ST_SEND_CLIENT_CERTIFICATE_D: |
| 276 | case SSL2_ST_X509_GET_CLIENT_CERTIFICATE: |
| 277 | ret=client_certificate(s); |
| 278 | if (ret <= 0) goto end; |
| 279 | s->init_num=0; |
| 280 | s->state=SSL2_ST_GET_SERVER_FINISHED_A; |
| 281 | break; |
| 282 | |
| 283 | case SSL_ST_OK: |
| 284 | if (s->init_buf != NULL) |
| 285 | { |
| 286 | BUF_MEM_free(s->init_buf); |
| 287 | s->init_buf=NULL; |
| 288 | } |
| 289 | s->init_num=0; |
| 290 | /* ERR_clear_error();*/ |
| 291 | |
| 292 | /* If we want to cache session-ids in the client |
| 293 | * and we successfully add the session-id to the |
| 294 | * cache, and there is a callback, then pass it out. |
| 295 | * 26/11/96 - eay - only add if not a re-used session. |
| 296 | */ |
| 297 | |
| 298 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); |
| 299 | if (s->hit) s->ctx->stats.sess_hit++; |
| 300 | |
| 301 | ret=1; |
| 302 | /* s->server=0; */ |
| 303 | s->ctx->stats.sess_connect_good++; |
| 304 | |
| 305 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); |
| 306 | |
| 307 | goto end; |
| 308 | /* break; */ |
| 309 | default: |
| 310 | SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE); |
| 311 | return(-1); |
| 312 | /* break; */ |
| 313 | } |
| 314 | |
| 315 | if ((cb != NULL) && (s->state != state)) |
| 316 | { |
| 317 | new_state=s->state; |
| 318 | s->state=state; |
| 319 | cb(s,SSL_CB_CONNECT_LOOP,1); |
| 320 | s->state=new_state; |
| 321 | } |
| 322 | } |
| 323 | end: |
| 324 | s->in_handshake--; |
| 325 | if (buf != NULL) |
| 326 | BUF_MEM_free(buf); |
| 327 | if (cb != NULL) |
| 328 | cb(s,SSL_CB_CONNECT_EXIT,ret); |
| 329 | return(ret); |
| 330 | } |
| 331 | |
| 332 | static int get_server_hello(SSL *s) |
| 333 | { |
| 334 | unsigned char *buf; |
| 335 | unsigned char *p; |
| 336 | int i,j; |
| 337 | unsigned long len; |
| 338 | STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow; |
| 339 | |
| 340 | buf=(unsigned char *)s->init_buf->data; |
| 341 | p=buf; |
| 342 | if (s->state == SSL2_ST_GET_SERVER_HELLO_A) |
| 343 | { |
| 344 | i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num); |
| 345 | if (i < (11-s->init_num)) |
| 346 | return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); |
| 347 | s->init_num = 11; |
| 348 | |
| 349 | if (*(p++) != SSL2_MT_SERVER_HELLO) |
| 350 | { |
| 351 | if (p[-1] != SSL2_MT_ERROR) |
| 352 | { |
| 353 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 354 | SSLerr(SSL_F_GET_SERVER_HELLO, |
| 355 | SSL_R_READ_WRONG_PACKET_TYPE); |
| 356 | } |
| 357 | else |
| 358 | SSLerr(SSL_F_GET_SERVER_HELLO, |
| 359 | SSL_R_PEER_ERROR); |
| 360 | return(-1); |
| 361 | } |
| 362 | #ifdef __APPLE_CC__ |
| 363 | /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug |
| 364 | * workaround. <appro@fy.chalmers.se> */ |
| 365 | s->hit=(i=*(p++))?1:0; |
| 366 | #else |
| 367 | s->hit=(*(p++))?1:0; |
| 368 | #endif |
| 369 | s->s2->tmp.cert_type= *(p++); |
| 370 | n2s(p,i); |
| 371 | if (i < s->version) s->version=i; |
| 372 | n2s(p,i); s->s2->tmp.cert_length=i; |
| 373 | n2s(p,i); s->s2->tmp.csl=i; |
| 374 | n2s(p,i); s->s2->tmp.conn_id_length=i; |
| 375 | s->state=SSL2_ST_GET_SERVER_HELLO_B; |
| 376 | } |
| 377 | |
| 378 | /* SSL2_ST_GET_SERVER_HELLO_B */ |
| 379 | len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length; |
| 380 | if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) |
| 381 | { |
| 382 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG); |
| 383 | return -1; |
| 384 | } |
| 385 | j = (int)len - s->init_num; |
| 386 | i = ssl2_read(s,(char *)&(buf[s->init_num]),j); |
| 387 | if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i)); |
| 388 | if (s->msg_callback) |
| 389 | s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */ |
| 390 | |
| 391 | /* things are looking good */ |
| 392 | |
| 393 | p = buf + 11; |
| 394 | if (s->hit) |
| 395 | { |
| 396 | if (s->s2->tmp.cert_length != 0) |
| 397 | { |
| 398 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO); |
| 399 | return(-1); |
| 400 | } |
| 401 | if (s->s2->tmp.cert_type != 0) |
| 402 | { |
| 403 | if (!(s->options & |
| 404 | SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG)) |
| 405 | { |
| 406 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO); |
| 407 | return(-1); |
| 408 | } |
| 409 | } |
| 410 | if (s->s2->tmp.csl != 0) |
| 411 | { |
| 412 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO); |
| 413 | return(-1); |
| 414 | } |
| 415 | } |
| 416 | else |
| 417 | { |
| 418 | #ifdef undef |
| 419 | /* very bad */ |
| 420 | memset(s->session->session_id,0, |
| 421 | SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES); |
| 422 | s->session->session_id_length=0; |
| 423 | */ |
| 424 | #endif |
| 425 | |
| 426 | /* we need to do this in case we were trying to reuse a |
| 427 | * client session but others are already reusing it. |
| 428 | * If this was a new 'blank' session ID, the session-id |
| 429 | * length will still be 0 */ |
| 430 | if (s->session->session_id_length > 0) |
| 431 | { |
| 432 | if (!ssl_get_new_session(s,0)) |
| 433 | { |
| 434 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 435 | return(-1); |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | if (ssl2_set_certificate(s,s->s2->tmp.cert_type, |
| 440 | s->s2->tmp.cert_length,p) <= 0) |
| 441 | { |
| 442 | ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE); |
| 443 | return(-1); |
| 444 | } |
| 445 | p+=s->s2->tmp.cert_length; |
| 446 | |
| 447 | if (s->s2->tmp.csl == 0) |
| 448 | { |
| 449 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); |
| 450 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST); |
| 451 | return(-1); |
| 452 | } |
| 453 | |
| 454 | /* We have just received a list of ciphers back from the |
| 455 | * server. We need to get the ones that match, then select |
| 456 | * the one we want the most :-). */ |
| 457 | |
| 458 | /* load the ciphers */ |
| 459 | sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl, |
| 460 | &s->session->ciphers); |
| 461 | p+=s->s2->tmp.csl; |
| 462 | if (sk == NULL) |
| 463 | { |
| 464 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 465 | SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE); |
| 466 | return(-1); |
| 467 | } |
| 468 | |
| 469 | (void)sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp); |
| 470 | |
| 471 | /* get the array of ciphers we will accept */ |
| 472 | cl=SSL_get_ciphers(s); |
| 473 | (void)sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp); |
| 474 | |
| 475 | /* |
| 476 | * If server preference flag set, choose the first |
| 477 | * (highest priority) cipher the server sends, otherwise |
| 478 | * client preference has priority. |
| 479 | */ |
| 480 | if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) |
| 481 | { |
| 482 | prio = sk; |
| 483 | allow = cl; |
| 484 | } |
| 485 | else |
| 486 | { |
| 487 | prio = cl; |
| 488 | allow = sk; |
| 489 | } |
| 490 | /* In theory we could have ciphers sent back that we |
| 491 | * don't want to use but that does not matter since we |
| 492 | * will check against the list we originally sent and |
| 493 | * for performance reasons we should not bother to match |
| 494 | * the two lists up just to check. */ |
| 495 | for (i=0; i<sk_SSL_CIPHER_num(prio); i++) |
| 496 | { |
| 497 | if (sk_SSL_CIPHER_find(allow, |
| 498 | sk_SSL_CIPHER_value(prio,i)) >= 0) |
| 499 | break; |
| 500 | } |
| 501 | |
| 502 | if (i >= sk_SSL_CIPHER_num(prio)) |
| 503 | { |
| 504 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); |
| 505 | SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH); |
| 506 | return(-1); |
| 507 | } |
| 508 | s->session->cipher=sk_SSL_CIPHER_value(prio,i); |
| 509 | |
| 510 | |
| 511 | if (s->session->peer != NULL) /* can't happen*/ |
| 512 | { |
| 513 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); |
| 514 | SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); |
| 515 | return(-1); |
| 516 | } |
| 517 | |
| 518 | s->session->peer = s->session->sess_cert->peer_key->x509; |
| 519 | /* peer_key->x509 has been set by ssl2_set_certificate. */ |
| 520 | CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509); |
| 521 | } |
| 522 | |
| 523 | if (s->session->sess_cert == NULL |
| 524 | || s->session->peer != s->session->sess_cert->peer_key->x509) |
| 525 | /* can't happen */ |
| 526 | { |
| 527 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); |
| 528 | SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR); |
| 529 | return(-1); |
| 530 | } |
| 531 | |
| 532 | s->s2->conn_id_length=s->s2->tmp.conn_id_length; |
| 533 | if (s->s2->conn_id_length > sizeof s->s2->conn_id) |
| 534 | { |
| 535 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); |
| 536 | SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG); |
| 537 | return -1; |
| 538 | } |
| 539 | memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length); |
| 540 | return(1); |
| 541 | } |
| 542 | |
| 543 | static int client_hello(SSL *s) |
| 544 | { |
| 545 | unsigned char *buf; |
| 546 | unsigned char *p,*d; |
| 547 | /* CIPHER **cipher;*/ |
| 548 | int i,n,j; |
| 549 | |
| 550 | buf=(unsigned char *)s->init_buf->data; |
| 551 | if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A) |
| 552 | { |
| 553 | if ((s->session == NULL) || |
| 554 | (s->session->ssl_version != s->version)) |
| 555 | { |
| 556 | if (!ssl_get_new_session(s,0)) |
| 557 | { |
| 558 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 559 | return(-1); |
| 560 | } |
| 561 | } |
| 562 | /* else use the pre-loaded session */ |
| 563 | |
| 564 | p=buf; /* header */ |
| 565 | d=p+9; /* data section */ |
| 566 | *(p++)=SSL2_MT_CLIENT_HELLO; /* type */ |
| 567 | s2n(SSL2_VERSION,p); /* version */ |
| 568 | n=j=0; |
| 569 | |
| 570 | n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0); |
| 571 | d+=n; |
| 572 | |
| 573 | if (n == 0) |
| 574 | { |
| 575 | SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); |
| 576 | return(-1); |
| 577 | } |
| 578 | |
| 579 | s2n(n,p); /* cipher spec num bytes */ |
| 580 | |
| 581 | if ((s->session->session_id_length > 0) && |
| 582 | (s->session->session_id_length <= |
| 583 | SSL2_MAX_SSL_SESSION_ID_LENGTH)) |
| 584 | { |
| 585 | i=s->session->session_id_length; |
| 586 | s2n(i,p); /* session id length */ |
| 587 | memcpy(d,s->session->session_id,(unsigned int)i); |
| 588 | d+=i; |
| 589 | } |
| 590 | else |
| 591 | { |
| 592 | s2n(0,p); |
| 593 | } |
| 594 | |
| 595 | s->s2->challenge_length=SSL2_CHALLENGE_LENGTH; |
| 596 | s2n(SSL2_CHALLENGE_LENGTH,p); /* challenge length */ |
| 597 | /*challenge id data*/ |
| 598 | if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0) |
| 599 | return -1; |
| 600 | memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH); |
| 601 | d+=SSL2_CHALLENGE_LENGTH; |
| 602 | |
| 603 | s->state=SSL2_ST_SEND_CLIENT_HELLO_B; |
| 604 | s->init_num=d-buf; |
| 605 | s->init_off=0; |
| 606 | } |
| 607 | /* SSL2_ST_SEND_CLIENT_HELLO_B */ |
| 608 | return(ssl2_do_write(s)); |
| 609 | } |
| 610 | |
| 611 | static int client_master_key(SSL *s) |
| 612 | { |
| 613 | unsigned char *buf; |
| 614 | unsigned char *p,*d; |
| 615 | int clear,enc,karg,i; |
| 616 | SSL_SESSION *sess; |
| 617 | const EVP_CIPHER *c; |
| 618 | const EVP_MD *md; |
| 619 | |
| 620 | buf=(unsigned char *)s->init_buf->data; |
| 621 | if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A) |
| 622 | { |
| 623 | |
| 624 | if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL)) |
| 625 | { |
| 626 | ssl2_return_error(s,SSL2_PE_NO_CIPHER); |
| 627 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); |
| 628 | return(-1); |
| 629 | } |
| 630 | sess=s->session; |
| 631 | p=buf; |
| 632 | d=p+10; |
| 633 | *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */ |
| 634 | |
| 635 | i=ssl_put_cipher_by_char(s,sess->cipher,p); |
| 636 | p+=i; |
| 637 | |
| 638 | /* make key_arg data */ |
| 639 | i=EVP_CIPHER_iv_length(c); |
| 640 | sess->key_arg_length=i; |
| 641 | if (i > SSL_MAX_KEY_ARG_LENGTH) |
| 642 | { |
| 643 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); |
| 644 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); |
| 645 | return -1; |
| 646 | } |
| 647 | if (i > 0) |
| 648 | if (RAND_pseudo_bytes(sess->key_arg,i) <= 0) |
| 649 | return -1; |
| 650 | |
| 651 | /* make a master key */ |
| 652 | i=EVP_CIPHER_key_length(c); |
| 653 | sess->master_key_length=i; |
| 654 | if (i > 0) |
| 655 | { |
| 656 | if (i > (int)sizeof(sess->master_key)) |
| 657 | { |
| 658 | ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); |
| 659 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); |
| 660 | return -1; |
| 661 | } |
| 662 | if (RAND_bytes(sess->master_key,i) <= 0) |
| 663 | { |
| 664 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 665 | return(-1); |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) |
| 670 | enc=8; |
| 671 | else if (SSL_C_IS_EXPORT(sess->cipher)) |
| 672 | enc=5; |
| 673 | else |
| 674 | enc=i; |
| 675 | |
| 676 | if ((int)i < enc) |
| 677 | { |
| 678 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 679 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR); |
| 680 | return(-1); |
| 681 | } |
| 682 | clear=i-enc; |
| 683 | s2n(clear,p); |
| 684 | memcpy(d,sess->master_key,(unsigned int)clear); |
| 685 | d+=clear; |
| 686 | |
| 687 | enc=ssl_rsa_public_encrypt(sess->sess_cert,enc, |
| 688 | &(sess->master_key[clear]),d, |
| 689 | (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING); |
| 690 | if (enc <= 0) |
| 691 | { |
| 692 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 693 | SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR); |
| 694 | return(-1); |
| 695 | } |
| 696 | #ifdef PKCS1_CHECK |
| 697 | if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++; |
| 698 | if (s->options & SSL_OP_PKCS1_CHECK_2) |
| 699 | sess->master_key[clear]++; |
| 700 | #endif |
| 701 | s2n(enc,p); |
| 702 | d+=enc; |
| 703 | karg=sess->key_arg_length; |
| 704 | s2n(karg,p); /* key arg size */ |
| 705 | if (karg > (int)sizeof(sess->key_arg)) |
| 706 | { |
| 707 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 708 | SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); |
| 709 | return -1; |
| 710 | } |
| 711 | memcpy(d,sess->key_arg,(unsigned int)karg); |
| 712 | d+=karg; |
| 713 | |
| 714 | s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B; |
| 715 | s->init_num=d-buf; |
| 716 | s->init_off=0; |
| 717 | } |
| 718 | |
| 719 | /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */ |
| 720 | return(ssl2_do_write(s)); |
| 721 | } |
| 722 | |
| 723 | static int client_finished(SSL *s) |
| 724 | { |
| 725 | unsigned char *p; |
| 726 | |
| 727 | if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A) |
| 728 | { |
| 729 | p=(unsigned char *)s->init_buf->data; |
| 730 | *(p++)=SSL2_MT_CLIENT_FINISHED; |
| 731 | if (s->s2->conn_id_length > sizeof s->s2->conn_id) |
| 732 | { |
| 733 | SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); |
| 734 | return -1; |
| 735 | } |
| 736 | memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length); |
| 737 | |
| 738 | s->state=SSL2_ST_SEND_CLIENT_FINISHED_B; |
| 739 | s->init_num=s->s2->conn_id_length+1; |
| 740 | s->init_off=0; |
| 741 | } |
| 742 | return(ssl2_do_write(s)); |
| 743 | } |
| 744 | |
| 745 | /* read the data and then respond */ |
| 746 | static int client_certificate(SSL *s) |
| 747 | { |
| 748 | unsigned char *buf; |
| 749 | unsigned char *p,*d; |
| 750 | int i; |
| 751 | unsigned int n; |
| 752 | int cert_ch_len; |
| 753 | unsigned char *cert_ch; |
| 754 | |
| 755 | buf=(unsigned char *)s->init_buf->data; |
| 756 | |
| 757 | /* We have a cert associated with the SSL, so attach it to |
| 758 | * the session if it does not have one */ |
| 759 | |
| 760 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A) |
| 761 | { |
| 762 | i=ssl2_read(s,(char *)&(buf[s->init_num]), |
| 763 | SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num); |
| 764 | if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num)) |
| 765 | return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i)); |
| 766 | s->init_num += i; |
| 767 | if (s->msg_callback) |
| 768 | s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */ |
| 769 | |
| 770 | /* type=buf[0]; */ |
| 771 | /* type eq x509 */ |
| 772 | if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) |
| 773 | { |
| 774 | ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); |
| 775 | SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE); |
| 776 | return(-1); |
| 777 | } |
| 778 | |
| 779 | if ((s->cert == NULL) || |
| 780 | (s->cert->key->x509 == NULL) || |
| 781 | (s->cert->key->privatekey == NULL)) |
| 782 | { |
| 783 | s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE; |
| 784 | } |
| 785 | else |
| 786 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; |
| 787 | } |
| 788 | |
| 789 | cert_ch = buf + 2; |
| 790 | cert_ch_len = s->init_num - 2; |
| 791 | |
| 792 | if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE) |
| 793 | { |
| 794 | X509 *x509=NULL; |
| 795 | EVP_PKEY *pkey=NULL; |
| 796 | |
| 797 | /* If we get an error we need to |
| 798 | * ssl->rwstate=SSL_X509_LOOKUP; |
| 799 | * return(error); |
| 800 | * We should then be retried when things are ok and we |
| 801 | * can get a cert or not */ |
| 802 | |
| 803 | i=0; |
| 804 | if (s->ctx->client_cert_cb != NULL) |
| 805 | { |
| 806 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); |
| 807 | } |
| 808 | |
| 809 | if (i < 0) |
| 810 | { |
| 811 | s->rwstate=SSL_X509_LOOKUP; |
| 812 | return(-1); |
| 813 | } |
| 814 | s->rwstate=SSL_NOTHING; |
| 815 | |
| 816 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) |
| 817 | { |
| 818 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C; |
| 819 | if ( !SSL_use_certificate(s,x509) || |
| 820 | !SSL_use_PrivateKey(s,pkey)) |
| 821 | { |
| 822 | i=0; |
| 823 | } |
| 824 | X509_free(x509); |
| 825 | EVP_PKEY_free(pkey); |
| 826 | } |
| 827 | else if (i == 1) |
| 828 | { |
| 829 | if (x509 != NULL) X509_free(x509); |
| 830 | if (pkey != NULL) EVP_PKEY_free(pkey); |
| 831 | SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); |
| 832 | i=0; |
| 833 | } |
| 834 | |
| 835 | if (i == 0) |
| 836 | { |
| 837 | /* We have no client certificate to respond with |
| 838 | * so send the correct error message back */ |
| 839 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B; |
| 840 | p=buf; |
| 841 | *(p++)=SSL2_MT_ERROR; |
| 842 | s2n(SSL2_PE_NO_CERTIFICATE,p); |
| 843 | s->init_off=0; |
| 844 | s->init_num=3; |
| 845 | /* Write is done at the end */ |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B) |
| 850 | { |
| 851 | return(ssl2_do_write(s)); |
| 852 | } |
| 853 | |
| 854 | if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C) |
| 855 | { |
| 856 | EVP_MD_CTX ctx; |
| 857 | |
| 858 | /* ok, now we calculate the checksum |
| 859 | * do it first so we can reuse buf :-) */ |
| 860 | p=buf; |
| 861 | EVP_MD_CTX_init(&ctx); |
| 862 | EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL); |
| 863 | EVP_SignUpdate(&ctx,s->s2->key_material, |
| 864 | s->s2->key_material_length); |
| 865 | EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len); |
| 866 | i=i2d_X509(s->session->sess_cert->peer_key->x509,&p); |
| 867 | /* Don't update the signature if it fails - FIXME: probably should handle this better */ |
| 868 | if(i > 0) |
| 869 | EVP_SignUpdate(&ctx,buf,(unsigned int)i); |
| 870 | |
| 871 | p=buf; |
| 872 | d=p+6; |
| 873 | *(p++)=SSL2_MT_CLIENT_CERTIFICATE; |
| 874 | *(p++)=SSL2_CT_X509_CERTIFICATE; |
| 875 | n=i2d_X509(s->cert->key->x509,&d); |
| 876 | s2n(n,p); |
| 877 | |
| 878 | if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey)) |
| 879 | { |
| 880 | /* this is not good. If things have failed it |
| 881 | * means there so something wrong with the key. |
| 882 | * We will continue with a 0 length signature |
| 883 | */ |
| 884 | } |
| 885 | EVP_MD_CTX_cleanup(&ctx); |
| 886 | s2n(n,p); |
| 887 | d+=n; |
| 888 | |
| 889 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D; |
| 890 | s->init_num=d-buf; |
| 891 | s->init_off=0; |
| 892 | } |
| 893 | /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */ |
| 894 | return(ssl2_do_write(s)); |
| 895 | } |
| 896 | |
| 897 | static int get_server_verify(SSL *s) |
| 898 | { |
| 899 | unsigned char *p; |
| 900 | int i, n, len; |
| 901 | |
| 902 | p=(unsigned char *)s->init_buf->data; |
| 903 | if (s->state == SSL2_ST_GET_SERVER_VERIFY_A) |
| 904 | { |
| 905 | i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num); |
| 906 | if (i < (1-s->init_num)) |
| 907 | return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); |
| 908 | s->init_num += i; |
| 909 | |
| 910 | s->state= SSL2_ST_GET_SERVER_VERIFY_B; |
| 911 | if (*p != SSL2_MT_SERVER_VERIFY) |
| 912 | { |
| 913 | if (p[0] != SSL2_MT_ERROR) |
| 914 | { |
| 915 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 916 | SSLerr(SSL_F_GET_SERVER_VERIFY, |
| 917 | SSL_R_READ_WRONG_PACKET_TYPE); |
| 918 | } |
| 919 | else |
| 920 | { |
| 921 | SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR); |
| 922 | /* try to read the error message */ |
| 923 | i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); |
| 924 | return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); |
| 925 | } |
| 926 | return(-1); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | p=(unsigned char *)s->init_buf->data; |
| 931 | len = 1 + s->s2->challenge_length; |
| 932 | n = len - s->init_num; |
| 933 | i = ssl2_read(s,(char *)&(p[s->init_num]),n); |
| 934 | if (i < n) |
| 935 | return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i)); |
| 936 | if (s->msg_callback) |
| 937 | s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */ |
| 938 | p += 1; |
| 939 | |
| 940 | if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0) |
| 941 | { |
| 942 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 943 | SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT); |
| 944 | return(-1); |
| 945 | } |
| 946 | return(1); |
| 947 | } |
| 948 | |
| 949 | static int get_server_finished(SSL *s) |
| 950 | { |
| 951 | unsigned char *buf; |
| 952 | unsigned char *p; |
| 953 | int i, n, len; |
| 954 | |
| 955 | buf=(unsigned char *)s->init_buf->data; |
| 956 | p=buf; |
| 957 | if (s->state == SSL2_ST_GET_SERVER_FINISHED_A) |
| 958 | { |
| 959 | i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num); |
| 960 | if (i < (1-s->init_num)) |
| 961 | return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); |
| 962 | s->init_num += i; |
| 963 | |
| 964 | if (*p == SSL2_MT_REQUEST_CERTIFICATE) |
| 965 | { |
| 966 | s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A; |
| 967 | return(1); |
| 968 | } |
| 969 | else if (*p != SSL2_MT_SERVER_FINISHED) |
| 970 | { |
| 971 | if (p[0] != SSL2_MT_ERROR) |
| 972 | { |
| 973 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 974 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE); |
| 975 | } |
| 976 | else |
| 977 | { |
| 978 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR); |
| 979 | /* try to read the error message */ |
| 980 | i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); |
| 981 | return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); |
| 982 | } |
| 983 | return(-1); |
| 984 | } |
| 985 | s->state=SSL2_ST_GET_SERVER_FINISHED_B; |
| 986 | } |
| 987 | |
| 988 | len = 1 + SSL2_SSL_SESSION_ID_LENGTH; |
| 989 | n = len - s->init_num; |
| 990 | i = ssl2_read(s,(char *)&(buf[s->init_num]), n); |
| 991 | if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */ |
| 992 | return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i)); |
| 993 | s->init_num += i; |
| 994 | if (s->msg_callback) |
| 995 | s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */ |
| 996 | |
| 997 | if (!s->hit) /* new session */ |
| 998 | { |
| 999 | /* new session-id */ |
| 1000 | /* Make sure we were not trying to re-use an old SSL_SESSION |
| 1001 | * or bad things can happen */ |
| 1002 | /* ZZZZZZZZZZZZZ */ |
| 1003 | s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; |
| 1004 | memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH); |
| 1005 | } |
| 1006 | else |
| 1007 | { |
| 1008 | if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG)) |
| 1009 | { |
| 1010 | if ((s->session->session_id_length > sizeof s->session->session_id) |
| 1011 | || (0 != memcmp(buf + 1, s->session->session_id, |
| 1012 | (unsigned int)s->session->session_id_length))) |
| 1013 | { |
| 1014 | ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); |
| 1015 | SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT); |
| 1016 | return(-1); |
| 1017 | } |
| 1018 | } |
| 1019 | } |
| 1020 | s->state = SSL_ST_OK; |
| 1021 | return(1); |
| 1022 | } |
| 1023 | |
| 1024 | /* loads in the certificate from the server */ |
| 1025 | int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data) |
| 1026 | { |
| 1027 | STACK_OF(X509) *sk=NULL; |
| 1028 | EVP_PKEY *pkey=NULL; |
| 1029 | SESS_CERT *sc=NULL; |
| 1030 | int i; |
| 1031 | X509 *x509=NULL; |
| 1032 | int ret=0; |
| 1033 | |
| 1034 | x509=d2i_X509(NULL,&data,(long)len); |
| 1035 | if (x509 == NULL) |
| 1036 | { |
| 1037 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB); |
| 1038 | goto err; |
| 1039 | } |
| 1040 | |
| 1041 | if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509)) |
| 1042 | { |
| 1043 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE); |
| 1044 | goto err; |
| 1045 | } |
| 1046 | |
| 1047 | i=ssl_verify_cert_chain(s,sk); |
| 1048 | |
| 1049 | if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)) |
| 1050 | { |
| 1051 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); |
| 1052 | goto err; |
| 1053 | } |
| 1054 | ERR_clear_error(); /* but we keep s->verify_result */ |
| 1055 | s->session->verify_result = s->verify_result; |
| 1056 | |
| 1057 | /* server's cert for this session */ |
| 1058 | sc=ssl_sess_cert_new(); |
| 1059 | if (sc == NULL) |
| 1060 | { |
| 1061 | ret= -1; |
| 1062 | goto err; |
| 1063 | } |
| 1064 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
| 1065 | s->session->sess_cert=sc; |
| 1066 | |
| 1067 | sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509; |
| 1068 | sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]); |
| 1069 | |
| 1070 | pkey=X509_get_pubkey(x509); |
| 1071 | x509=NULL; |
| 1072 | if (pkey == NULL) |
| 1073 | { |
| 1074 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY); |
| 1075 | goto err; |
| 1076 | } |
| 1077 | if (pkey->type != EVP_PKEY_RSA) |
| 1078 | { |
| 1079 | SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA); |
| 1080 | goto err; |
| 1081 | } |
| 1082 | |
| 1083 | if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE)) |
| 1084 | goto err; |
| 1085 | ret=1; |
| 1086 | err: |
| 1087 | sk_X509_free(sk); |
| 1088 | X509_free(x509); |
| 1089 | EVP_PKEY_free(pkey); |
| 1090 | return(ret); |
| 1091 | } |
| 1092 | |
| 1093 | static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from, |
| 1094 | unsigned char *to, int padding) |
| 1095 | { |
| 1096 | EVP_PKEY *pkey=NULL; |
| 1097 | int i= -1; |
| 1098 | |
| 1099 | if ((sc == NULL) || (sc->peer_key->x509 == NULL) || |
| 1100 | ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL)) |
| 1101 | { |
| 1102 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY); |
| 1103 | return(-1); |
| 1104 | } |
| 1105 | if (pkey->type != EVP_PKEY_RSA) |
| 1106 | { |
| 1107 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA); |
| 1108 | goto end; |
| 1109 | } |
| 1110 | |
| 1111 | /* we have the public key */ |
| 1112 | i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding); |
| 1113 | if (i < 0) |
| 1114 | SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB); |
| 1115 | end: |
| 1116 | EVP_PKEY_free(pkey); |
| 1117 | return(i); |
| 1118 | } |
| 1119 | #else /* !OPENSSL_NO_SSL2 */ |
| 1120 | |
| 1121 | # if PEDANTIC |
| 1122 | static void *dummy=&dummy; |
| 1123 | # endif |
| 1124 | |
| 1125 | #endif |