1 /* $OpenBSD: ssl_sess.c,v 1.122 2023/07/08 16:40:13 beck Exp $ */ 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) 1998-2006 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 * Copyright 2005 Nokia. All rights reserved. 113 * 114 * The portions of the attached software ("Contribution") is developed by 115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 116 * license. 117 * 118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 120 * support (see RFC 4279) to OpenSSL. 121 * 122 * No patent licenses or other rights except those expressly stated in 123 * the OpenSSL open source license shall be deemed granted or received 124 * expressly, by implication, estoppel, or otherwise. 125 * 126 * No assurances are provided by Nokia that the Contribution does not 127 * infringe the patent or other intellectual property rights of any third 128 * party or that the license provides you with all the necessary rights 129 * to make use of the Contribution. 130 * 131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 135 * OTHERWISE. 136 */ 137 138 #include <openssl/lhash.h> 139 #include <openssl/opensslconf.h> 140 141 #ifndef OPENSSL_NO_ENGINE 142 #include <openssl/engine.h> 143 #endif 144 145 #include "ssl_local.h" 146 147 static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); 148 static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s); 149 static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); 150 151 /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ 152 SSL_SESSION * 153 SSL_get_session(const SSL *ssl) 154 { 155 return (ssl->session); 156 } 157 LSSL_ALIAS(SSL_get_session); 158 159 /* variant of SSL_get_session: caller really gets something */ 160 SSL_SESSION * 161 SSL_get1_session(SSL *ssl) 162 { 163 SSL_SESSION *sess; 164 165 /* 166 * Need to lock this all up rather than just use CRYPTO_add so that 167 * somebody doesn't free ssl->session between when we check it's 168 * non-null and when we up the reference count. 169 */ 170 CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); 171 sess = ssl->session; 172 if (sess) 173 sess->references++; 174 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); 175 176 return (sess); 177 } 178 LSSL_ALIAS(SSL_get1_session); 179 180 int 181 SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 182 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 183 { 184 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, 185 argl, argp, new_func, dup_func, free_func); 186 } 187 LSSL_ALIAS(SSL_SESSION_get_ex_new_index); 188 189 int 190 SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) 191 { 192 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 193 } 194 LSSL_ALIAS(SSL_SESSION_set_ex_data); 195 196 void * 197 SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) 198 { 199 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 200 } 201 LSSL_ALIAS(SSL_SESSION_get_ex_data); 202 203 uint32_t 204 SSL_SESSION_get_max_early_data(const SSL_SESSION *s) 205 { 206 return 0; 207 } 208 LSSL_ALIAS(SSL_SESSION_get_max_early_data); 209 210 int 211 SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data) 212 { 213 return 1; 214 } 215 LSSL_ALIAS(SSL_SESSION_set_max_early_data); 216 217 SSL_SESSION * 218 SSL_SESSION_new(void) 219 { 220 SSL_SESSION *ss; 221 222 if (!OPENSSL_init_ssl(0, NULL)) { 223 SSLerrorx(SSL_R_LIBRARY_BUG); 224 return(NULL); 225 } 226 227 if ((ss = calloc(1, sizeof(*ss))) == NULL) { 228 SSLerrorx(ERR_R_MALLOC_FAILURE); 229 return (NULL); 230 } 231 232 ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ 233 ss->references = 1; 234 ss->timeout = 60 * 5 + 4; /* 5 minutes 4 seconds timeout by default */ 235 ss->time = time(NULL); 236 ss->prev = NULL; 237 ss->next = NULL; 238 ss->tlsext_hostname = NULL; 239 240 ss->peer_cert_type = -1; 241 242 ss->tlsext_ecpointformatlist_length = 0; 243 ss->tlsext_ecpointformatlist = NULL; 244 ss->tlsext_supportedgroups_length = 0; 245 ss->tlsext_supportedgroups = NULL; 246 247 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 248 249 return (ss); 250 } 251 LSSL_ALIAS(SSL_SESSION_new); 252 253 SSL_SESSION * 254 ssl_session_dup(SSL_SESSION *sess, int include_ticket) 255 { 256 SSL_SESSION *copy; 257 CBS cbs; 258 259 if ((copy = calloc(1, sizeof(*copy))) == NULL) { 260 SSLerrorx(ERR_R_MALLOC_FAILURE); 261 goto err; 262 } 263 264 copy->ssl_version = sess->ssl_version; 265 266 CBS_init(&cbs, sess->master_key, sess->master_key_length); 267 if (!CBS_write_bytes(&cbs, copy->master_key, sizeof(copy->master_key), 268 ©->master_key_length)) 269 goto err; 270 271 CBS_init(&cbs, sess->session_id, sess->session_id_length); 272 if (!CBS_write_bytes(&cbs, copy->session_id, sizeof(copy->session_id), 273 ©->session_id_length)) 274 goto err; 275 276 CBS_init(&cbs, sess->sid_ctx, sess->sid_ctx_length); 277 if (!CBS_write_bytes(&cbs, copy->sid_ctx, sizeof(copy->sid_ctx), 278 ©->sid_ctx_length)) 279 goto err; 280 281 if (sess->peer_cert != NULL) { 282 if (!X509_up_ref(sess->peer_cert)) 283 goto err; 284 copy->peer_cert = sess->peer_cert; 285 } 286 copy->peer_cert_type = sess->peer_cert_type; 287 288 copy->verify_result = sess->verify_result; 289 290 copy->timeout = sess->timeout; 291 copy->time = sess->time; 292 copy->references = 1; 293 294 copy->cipher = sess->cipher; 295 copy->cipher_id = sess->cipher_id; 296 297 if (sess->ciphers != NULL) { 298 if ((copy->ciphers = sk_SSL_CIPHER_dup(sess->ciphers)) == NULL) 299 goto err; 300 } 301 302 if (sess->tlsext_hostname != NULL) { 303 copy->tlsext_hostname = strdup(sess->tlsext_hostname); 304 if (copy->tlsext_hostname == NULL) 305 goto err; 306 } 307 308 if (include_ticket) { 309 CBS_init(&cbs, sess->tlsext_tick, sess->tlsext_ticklen); 310 if (!CBS_stow(&cbs, ©->tlsext_tick, ©->tlsext_ticklen)) 311 goto err; 312 copy->tlsext_tick_lifetime_hint = 313 sess->tlsext_tick_lifetime_hint; 314 315 /* 316 * XXX - copy sess->resumption_master_secret and all other 317 * TLSv1.3 info here. 318 */ 319 } 320 321 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, copy, 322 ©->ex_data)) 323 goto err; 324 325 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ©->ex_data, 326 &sess->ex_data)) 327 goto err; 328 329 /* Omit prev/next: the new session gets its own slot in the cache. */ 330 331 copy->not_resumable = sess->not_resumable; 332 333 CBS_init(&cbs, sess->tlsext_ecpointformatlist, 334 sess->tlsext_ecpointformatlist_length); 335 if (!CBS_stow(&cbs, ©->tlsext_ecpointformatlist, 336 ©->tlsext_ecpointformatlist_length)) 337 goto err; 338 339 if (sess->tlsext_supportedgroups != NULL) { 340 if ((copy->tlsext_supportedgroups = calloc(sizeof(uint16_t), 341 sess->tlsext_supportedgroups_length)) == NULL) 342 goto err; 343 memcpy(copy->tlsext_supportedgroups, 344 sess->tlsext_supportedgroups, 345 sizeof(uint16_t) * sess->tlsext_supportedgroups_length); 346 copy->tlsext_supportedgroups_length = 347 sess->tlsext_supportedgroups_length; 348 } 349 350 return copy; 351 352 err: 353 SSL_SESSION_free(copy); 354 355 return NULL; 356 } 357 358 const unsigned char * 359 SSL_SESSION_get_id(const SSL_SESSION *ss, unsigned int *len) 360 { 361 if (len != NULL) 362 *len = (unsigned int)ss->session_id_length; 363 return ss->session_id; 364 } 365 LSSL_ALIAS(SSL_SESSION_get_id); 366 367 const unsigned char * 368 SSL_SESSION_get0_id_context(const SSL_SESSION *ss, unsigned int *len) 369 { 370 if (len != NULL) 371 *len = (unsigned int)ss->sid_ctx_length; 372 return ss->sid_ctx; 373 } 374 LSSL_ALIAS(SSL_SESSION_get0_id_context); 375 376 unsigned int 377 SSL_SESSION_get_compress_id(const SSL_SESSION *ss) 378 { 379 return 0; 380 } 381 LSSL_ALIAS(SSL_SESSION_get_compress_id); 382 383 unsigned long 384 SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) 385 { 386 return s->tlsext_tick_lifetime_hint; 387 } 388 LSSL_ALIAS(SSL_SESSION_get_ticket_lifetime_hint); 389 390 int 391 SSL_SESSION_has_ticket(const SSL_SESSION *s) 392 { 393 return (s->tlsext_ticklen > 0) ? 1 : 0; 394 } 395 LSSL_ALIAS(SSL_SESSION_has_ticket); 396 397 /* 398 * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling 399 * the ID with random gunk repeatedly until we have no conflict is going to 400 * complete in one iteration pretty much "most" of the time (btw: 401 * understatement). So, if it takes us 10 iterations and we still can't avoid 402 * a conflict - well that's a reasonable point to call it quits. Either the 403 * arc4random code is broken or someone is trying to open roughly very close to 404 * 2^128 (or 2^256) SSL sessions to our server. How you might store that many 405 * sessions is perhaps a more interesting question... 406 */ 407 408 #define MAX_SESS_ID_ATTEMPTS 10 409 410 static int 411 def_generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) 412 { 413 unsigned int retry = 0; 414 415 do { 416 arc4random_buf(id, *id_len); 417 } while (SSL_has_matching_session_id(ssl, id, *id_len) && 418 (++retry < MAX_SESS_ID_ATTEMPTS)); 419 420 if (retry < MAX_SESS_ID_ATTEMPTS) 421 return 1; 422 423 /* else - woops a session_id match */ 424 /* XXX We should also check the external cache -- 425 * but the probability of a collision is negligible, and 426 * we could not prevent the concurrent creation of sessions 427 * with identical IDs since we currently don't have means 428 * to atomically check whether a session ID already exists 429 * and make a reservation for it if it does not 430 * (this problem applies to the internal cache as well). 431 */ 432 return 0; 433 } 434 435 int 436 ssl_get_new_session(SSL *s, int session) 437 { 438 unsigned int tmp; 439 SSL_SESSION *ss = NULL; 440 GEN_SESSION_CB cb = def_generate_session_id; 441 442 /* This gets used by clients and servers. */ 443 444 if ((ss = SSL_SESSION_new()) == NULL) 445 return (0); 446 447 /* If the context has a default timeout, use it */ 448 if (s->session_ctx->session_timeout == 0) 449 ss->timeout = SSL_get_default_timeout(s); 450 else 451 ss->timeout = s->session_ctx->session_timeout; 452 453 if (s->session != NULL) { 454 SSL_SESSION_free(s->session); 455 s->session = NULL; 456 } 457 458 if (session) { 459 switch (s->version) { 460 case TLS1_VERSION: 461 case TLS1_1_VERSION: 462 case TLS1_2_VERSION: 463 case DTLS1_VERSION: 464 case DTLS1_2_VERSION: 465 ss->ssl_version = s->version; 466 ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; 467 break; 468 default: 469 SSLerror(s, SSL_R_UNSUPPORTED_SSL_VERSION); 470 SSL_SESSION_free(ss); 471 return (0); 472 } 473 474 /* If RFC4507 ticket use empty session ID. */ 475 if (s->tlsext_ticket_expected) { 476 ss->session_id_length = 0; 477 goto sess_id_done; 478 } 479 480 /* Choose which callback will set the session ID. */ 481 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 482 if (s->generate_session_id) 483 cb = s->generate_session_id; 484 else if (s->session_ctx->generate_session_id) 485 cb = s->session_ctx->generate_session_id; 486 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 487 488 /* Choose a session ID. */ 489 tmp = ss->session_id_length; 490 if (!cb(s, ss->session_id, &tmp)) { 491 /* The callback failed */ 492 SSLerror(s, SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); 493 SSL_SESSION_free(ss); 494 return (0); 495 } 496 497 /* 498 * Don't allow the callback to set the session length to zero. 499 * nor set it higher than it was. 500 */ 501 if (tmp == 0 || tmp > ss->session_id_length) { 502 /* The callback set an illegal length */ 503 SSLerror(s, SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); 504 SSL_SESSION_free(ss); 505 return (0); 506 } 507 ss->session_id_length = tmp; 508 509 /* Finally, check for a conflict. */ 510 if (SSL_has_matching_session_id(s, ss->session_id, 511 ss->session_id_length)) { 512 SSLerror(s, SSL_R_SSL_SESSION_ID_CONFLICT); 513 SSL_SESSION_free(ss); 514 return (0); 515 } 516 517 sess_id_done: 518 if (s->tlsext_hostname) { 519 ss->tlsext_hostname = strdup(s->tlsext_hostname); 520 if (ss->tlsext_hostname == NULL) { 521 SSLerror(s, ERR_R_INTERNAL_ERROR); 522 SSL_SESSION_free(ss); 523 return 0; 524 } 525 } 526 } else { 527 ss->session_id_length = 0; 528 } 529 530 if (s->sid_ctx_length > sizeof ss->sid_ctx) { 531 SSLerror(s, ERR_R_INTERNAL_ERROR); 532 SSL_SESSION_free(ss); 533 return 0; 534 } 535 536 memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); 537 ss->sid_ctx_length = s->sid_ctx_length; 538 s->session = ss; 539 ss->ssl_version = s->version; 540 ss->verify_result = X509_V_OK; 541 542 return (1); 543 } 544 545 static SSL_SESSION * 546 ssl_session_from_cache(SSL *s, CBS *session_id) 547 { 548 SSL_SESSION *sess; 549 SSL_SESSION data; 550 551 if ((s->session_ctx->session_cache_mode & 552 SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) 553 return NULL; 554 555 memset(&data, 0, sizeof(data)); 556 557 data.ssl_version = s->version; 558 559 if (!CBS_write_bytes(session_id, data.session_id, 560 sizeof(data.session_id), &data.session_id_length)) 561 return NULL; 562 563 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 564 sess = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); 565 if (sess != NULL) 566 CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION); 567 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 568 569 if (sess == NULL) 570 s->session_ctx->stats.sess_miss++; 571 572 return sess; 573 } 574 575 static SSL_SESSION * 576 ssl_session_from_callback(SSL *s, CBS *session_id) 577 { 578 SSL_SESSION *sess; 579 int copy; 580 581 if (s->session_ctx->get_session_cb == NULL) 582 return NULL; 583 584 copy = 1; 585 if ((sess = s->session_ctx->get_session_cb(s, 586 CBS_data(session_id), CBS_len(session_id), ©)) == NULL) 587 return NULL; 588 /* 589 * The copy handler may have set copy == 0 to indicate that the session 590 * structures are shared between threads and that it handles the 591 * reference count itself. If it didn't set copy to zero, we must 592 * increment the reference count. 593 */ 594 if (copy) 595 CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION); 596 597 s->session_ctx->stats.sess_cb_hit++; 598 599 /* Add the externally cached session to the internal cache as well. */ 600 if (!(s->session_ctx->session_cache_mode & 601 SSL_SESS_CACHE_NO_INTERNAL_STORE)) { 602 /* 603 * The following should not return 1, 604 * otherwise, things are very strange. 605 */ 606 SSL_CTX_add_session(s->session_ctx, sess); 607 } 608 609 return sess; 610 } 611 612 static SSL_SESSION * 613 ssl_session_by_id(SSL *s, CBS *session_id) 614 { 615 SSL_SESSION *sess; 616 617 if (CBS_len(session_id) == 0) 618 return NULL; 619 620 if ((sess = ssl_session_from_cache(s, session_id)) == NULL) 621 sess = ssl_session_from_callback(s, session_id); 622 623 return sess; 624 } 625 626 /* 627 * ssl_get_prev_session attempts to find an SSL_SESSION to be used to resume 628 * this connection. It is only called by servers. 629 * 630 * session_id: points at the session ID in the ClientHello. This code will 631 * read past the end of this in order to parse out the session ticket 632 * extension, if any. 633 * ext_block: a CBS for the ClientHello extensions block. 634 * alert: alert that the caller should send in case of failure. 635 * 636 * Returns: 637 * -1: error 638 * 0: a session may have been found. 639 * 640 * Side effects: 641 * - If a session is found then s->session is pointed at it (after freeing 642 * an existing session if need be) and s->verify_result is set from the 643 * session. 644 * - For both new and resumed sessions, s->tlsext_ticket_expected 645 * indicates whether the server should issue a new session ticket or not. 646 */ 647 int 648 ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block, int *alert) 649 { 650 SSL_SESSION *sess = NULL; 651 int alert_desc = SSL_AD_INTERNAL_ERROR, fatal = 0; 652 int ticket_decrypted = 0; 653 654 /* This is used only by servers. */ 655 656 if (CBS_len(session_id) > SSL_MAX_SSL_SESSION_ID_LENGTH) 657 goto err; 658 659 /* Sets s->tlsext_ticket_expected. */ 660 switch (tls1_process_ticket(s, ext_block, &alert_desc, &sess)) { 661 case TLS1_TICKET_FATAL_ERROR: 662 fatal = 1; 663 goto err; 664 case TLS1_TICKET_NONE: 665 case TLS1_TICKET_EMPTY: 666 if ((sess = ssl_session_by_id(s, session_id)) == NULL) 667 goto err; 668 break; 669 case TLS1_TICKET_NOT_DECRYPTED: 670 goto err; 671 case TLS1_TICKET_DECRYPTED: 672 ticket_decrypted = 1; 673 674 /* 675 * The session ID is used by some clients to detect that the 676 * ticket has been accepted so we copy it into sess. 677 */ 678 if (!CBS_write_bytes(session_id, sess->session_id, 679 sizeof(sess->session_id), &sess->session_id_length)) { 680 fatal = 1; 681 goto err; 682 } 683 break; 684 default: 685 SSLerror(s, ERR_R_INTERNAL_ERROR); 686 fatal = 1; 687 goto err; 688 } 689 690 /* Now sess is non-NULL and we own one of its reference counts. */ 691 692 if (sess->sid_ctx_length != s->sid_ctx_length || 693 timingsafe_memcmp(sess->sid_ctx, s->sid_ctx, 694 sess->sid_ctx_length) != 0) { 695 /* 696 * We have the session requested by the client, but we don't 697 * want to use it in this context. Treat it like a cache miss. 698 */ 699 goto err; 700 } 701 702 if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { 703 /* 704 * We can't be sure if this session is being used out of 705 * context, which is especially important for SSL_VERIFY_PEER. 706 * The application should have used 707 * SSL[_CTX]_set_session_id_context. 708 * 709 * For this error case, we generate an error instead of treating 710 * the event like a cache miss (otherwise it would be easy for 711 * applications to effectively disable the session cache by 712 * accident without anyone noticing). 713 */ 714 SSLerror(s, SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); 715 fatal = 1; 716 goto err; 717 } 718 719 if (sess->cipher == NULL) { 720 sess->cipher = ssl3_get_cipher_by_id(sess->cipher_id); 721 if (sess->cipher == NULL) 722 goto err; 723 } 724 725 if (sess->timeout < (time(NULL) - sess->time)) { 726 s->session_ctx->stats.sess_timeout++; 727 if (!ticket_decrypted) { 728 /* The session was from the cache, so remove it. */ 729 SSL_CTX_remove_session(s->session_ctx, sess); 730 } 731 goto err; 732 } 733 734 s->session_ctx->stats.sess_hit++; 735 736 SSL_SESSION_free(s->session); 737 s->session = sess; 738 s->verify_result = s->session->verify_result; 739 740 return 1; 741 742 err: 743 SSL_SESSION_free(sess); 744 if (ticket_decrypted) { 745 /* 746 * The session was from a ticket. Issue a ticket for the new 747 * session. 748 */ 749 s->tlsext_ticket_expected = 1; 750 } 751 if (fatal) { 752 *alert = alert_desc; 753 return -1; 754 } 755 return 0; 756 } 757 758 int 759 SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) 760 { 761 int ret = 0; 762 SSL_SESSION *s; 763 764 /* 765 * Add just 1 reference count for the SSL_CTX's session cache 766 * even though it has two ways of access: each session is in a 767 * doubly linked list and an lhash. 768 */ 769 CRYPTO_add(&c->references, 1, CRYPTO_LOCK_SSL_SESSION); 770 771 /* 772 * If session c is in already in cache, we take back the increment 773 * later. 774 */ 775 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 776 s = lh_SSL_SESSION_insert(ctx->sessions, c); 777 778 /* 779 * s != NULL iff we already had a session with the given PID. 780 * In this case, s == c should hold (then we did not really modify 781 * ctx->sessions), or we're in trouble. 782 */ 783 if (s != NULL && s != c) { 784 /* We *are* in trouble ... */ 785 SSL_SESSION_list_remove(ctx, s); 786 SSL_SESSION_free(s); 787 /* 788 * ... so pretend the other session did not exist in cache 789 * (we cannot handle two SSL_SESSION structures with identical 790 * session ID in the same cache, which could happen e.g. when 791 * two threads concurrently obtain the same session from an 792 * external cache). 793 */ 794 s = NULL; 795 } 796 797 /* Put at the head of the queue unless it is already in the cache */ 798 if (s == NULL) 799 SSL_SESSION_list_add(ctx, c); 800 801 if (s != NULL) { 802 /* 803 * existing cache entry -- decrement previously incremented 804 * reference count because it already takes into account the 805 * cache. 806 */ 807 SSL_SESSION_free(s); /* s == c */ 808 ret = 0; 809 } else { 810 /* 811 * New cache entry -- remove old ones if cache has become 812 * too large. 813 */ 814 815 ret = 1; 816 817 if (SSL_CTX_sess_get_cache_size(ctx) > 0) { 818 while (SSL_CTX_sess_number(ctx) > 819 SSL_CTX_sess_get_cache_size(ctx)) { 820 if (!remove_session_lock(ctx, 821 ctx->session_cache_tail, 0)) 822 break; 823 else 824 ctx->stats.sess_cache_full++; 825 } 826 } 827 } 828 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 829 return (ret); 830 } 831 LSSL_ALIAS(SSL_CTX_add_session); 832 833 int 834 SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) 835 { 836 return remove_session_lock(ctx, c, 1); 837 } 838 LSSL_ALIAS(SSL_CTX_remove_session); 839 840 static int 841 remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) 842 { 843 SSL_SESSION *r; 844 int ret = 0; 845 846 if (c == NULL || c->session_id_length == 0) 847 return 0; 848 849 if (lck) 850 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 851 if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) == c) { 852 ret = 1; 853 r = lh_SSL_SESSION_delete(ctx->sessions, c); 854 SSL_SESSION_list_remove(ctx, c); 855 } 856 if (lck) 857 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 858 859 if (ret) { 860 r->not_resumable = 1; 861 if (ctx->remove_session_cb != NULL) 862 ctx->remove_session_cb(ctx, r); 863 SSL_SESSION_free(r); 864 } 865 866 return ret; 867 } 868 869 void 870 SSL_SESSION_free(SSL_SESSION *ss) 871 { 872 int i; 873 874 if (ss == NULL) 875 return; 876 877 i = CRYPTO_add(&ss->references, -1, CRYPTO_LOCK_SSL_SESSION); 878 if (i > 0) 879 return; 880 881 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 882 883 explicit_bzero(ss->master_key, sizeof ss->master_key); 884 explicit_bzero(ss->session_id, sizeof ss->session_id); 885 886 X509_free(ss->peer_cert); 887 888 sk_SSL_CIPHER_free(ss->ciphers); 889 890 free(ss->tlsext_hostname); 891 free(ss->tlsext_tick); 892 free(ss->tlsext_ecpointformatlist); 893 free(ss->tlsext_supportedgroups); 894 895 tls13_secret_cleanup(&ss->resumption_master_secret); 896 897 freezero(ss, sizeof(*ss)); 898 } 899 LSSL_ALIAS(SSL_SESSION_free); 900 901 int 902 SSL_SESSION_up_ref(SSL_SESSION *ss) 903 { 904 int refs = CRYPTO_add(&ss->references, 1, CRYPTO_LOCK_SSL_SESSION); 905 return (refs > 1) ? 1 : 0; 906 } 907 LSSL_ALIAS(SSL_SESSION_up_ref); 908 909 int 910 SSL_set_session(SSL *s, SSL_SESSION *session) 911 { 912 const SSL_METHOD *method; 913 914 if (session == NULL) { 915 SSL_SESSION_free(s->session); 916 s->session = NULL; 917 918 return SSL_set_ssl_method(s, s->ctx->method); 919 } 920 921 if ((method = ssl_get_method(session->ssl_version)) == NULL) { 922 SSLerror(s, SSL_R_UNABLE_TO_FIND_SSL_METHOD); 923 return (0); 924 } 925 926 if (!SSL_set_ssl_method(s, method)) 927 return (0); 928 929 CRYPTO_add(&session->references, 1, CRYPTO_LOCK_SSL_SESSION); 930 SSL_SESSION_free(s->session); 931 s->session = session; 932 s->verify_result = s->session->verify_result; 933 934 return (1); 935 } 936 LSSL_ALIAS(SSL_set_session); 937 938 size_t 939 SSL_SESSION_get_master_key(const SSL_SESSION *ss, unsigned char *out, 940 size_t max_out) 941 { 942 size_t len = ss->master_key_length; 943 944 if (out == NULL) 945 return len; 946 947 if (len > max_out) 948 len = max_out; 949 950 memcpy(out, ss->master_key, len); 951 952 return len; 953 } 954 LSSL_ALIAS(SSL_SESSION_get_master_key); 955 956 long 957 SSL_SESSION_set_timeout(SSL_SESSION *s, long t) 958 { 959 if (s == NULL) 960 return (0); 961 s->timeout = t; 962 return (1); 963 } 964 LSSL_ALIAS(SSL_SESSION_set_timeout); 965 966 long 967 SSL_SESSION_get_timeout(const SSL_SESSION *s) 968 { 969 if (s == NULL) 970 return (0); 971 return (s->timeout); 972 } 973 LSSL_ALIAS(SSL_SESSION_get_timeout); 974 975 /* XXX 2038 */ 976 long 977 SSL_SESSION_get_time(const SSL_SESSION *s) 978 { 979 if (s == NULL) 980 return (0); 981 return (s->time); 982 } 983 LSSL_ALIAS(SSL_SESSION_get_time); 984 985 /* XXX 2038 */ 986 long 987 SSL_SESSION_set_time(SSL_SESSION *s, long t) 988 { 989 if (s == NULL) 990 return (0); 991 s->time = t; 992 return (t); 993 } 994 LSSL_ALIAS(SSL_SESSION_set_time); 995 996 int 997 SSL_SESSION_get_protocol_version(const SSL_SESSION *s) 998 { 999 return s->ssl_version; 1000 } 1001 LSSL_ALIAS(SSL_SESSION_get_protocol_version); 1002 1003 const SSL_CIPHER * 1004 SSL_SESSION_get0_cipher(const SSL_SESSION *s) 1005 { 1006 return s->cipher; 1007 } 1008 LSSL_ALIAS(SSL_SESSION_get0_cipher); 1009 1010 X509 * 1011 SSL_SESSION_get0_peer(SSL_SESSION *s) 1012 { 1013 return s->peer_cert; 1014 } 1015 LSSL_ALIAS(SSL_SESSION_get0_peer); 1016 1017 int 1018 SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, 1019 unsigned int sid_len) 1020 { 1021 if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { 1022 SSLerrorx(SSL_R_SSL_SESSION_ID_TOO_LONG); 1023 return 0; 1024 } 1025 s->session_id_length = sid_len; 1026 memmove(s->session_id, sid, sid_len); 1027 return 1; 1028 } 1029 LSSL_ALIAS(SSL_SESSION_set1_id); 1030 1031 int 1032 SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, 1033 unsigned int sid_ctx_len) 1034 { 1035 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 1036 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 1037 return 0; 1038 } 1039 s->sid_ctx_length = sid_ctx_len; 1040 memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); 1041 1042 return 1; 1043 } 1044 LSSL_ALIAS(SSL_SESSION_set1_id_context); 1045 1046 int 1047 SSL_SESSION_is_resumable(const SSL_SESSION *s) 1048 { 1049 return 0; 1050 } 1051 LSSL_ALIAS(SSL_SESSION_is_resumable); 1052 1053 long 1054 SSL_CTX_set_timeout(SSL_CTX *s, long t) 1055 { 1056 long l; 1057 1058 if (s == NULL) 1059 return (0); 1060 l = s->session_timeout; 1061 s->session_timeout = t; 1062 1063 return (l); 1064 } 1065 LSSL_ALIAS(SSL_CTX_set_timeout); 1066 1067 long 1068 SSL_CTX_get_timeout(const SSL_CTX *s) 1069 { 1070 if (s == NULL) 1071 return (0); 1072 return (s->session_timeout); 1073 } 1074 LSSL_ALIAS(SSL_CTX_get_timeout); 1075 1076 int 1077 SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, 1078 void *secret, int *secret_len, STACK_OF(SSL_CIPHER) *peer_ciphers, 1079 SSL_CIPHER **cipher, void *arg), void *arg) 1080 { 1081 if (s == NULL) 1082 return (0); 1083 s->tls_session_secret_cb = tls_session_secret_cb; 1084 s->tls_session_secret_cb_arg = arg; 1085 return (1); 1086 } 1087 LSSL_ALIAS(SSL_set_session_secret_cb); 1088 1089 int 1090 SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, 1091 void *arg) 1092 { 1093 if (s == NULL) 1094 return (0); 1095 s->tls_session_ticket_ext_cb = cb; 1096 s->tls_session_ticket_ext_cb_arg = arg; 1097 return (1); 1098 } 1099 LSSL_ALIAS(SSL_set_session_ticket_ext_cb); 1100 1101 int 1102 SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) 1103 { 1104 if (s->version >= TLS1_VERSION) { 1105 free(s->tlsext_session_ticket); 1106 s->tlsext_session_ticket = 1107 malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); 1108 if (!s->tlsext_session_ticket) { 1109 SSLerror(s, ERR_R_MALLOC_FAILURE); 1110 return 0; 1111 } 1112 1113 if (ext_data) { 1114 s->tlsext_session_ticket->length = ext_len; 1115 s->tlsext_session_ticket->data = 1116 s->tlsext_session_ticket + 1; 1117 memcpy(s->tlsext_session_ticket->data, 1118 ext_data, ext_len); 1119 } else { 1120 s->tlsext_session_ticket->length = 0; 1121 s->tlsext_session_ticket->data = NULL; 1122 } 1123 1124 return 1; 1125 } 1126 1127 return 0; 1128 } 1129 LSSL_ALIAS(SSL_set_session_ticket_ext); 1130 1131 typedef struct timeout_param_st { 1132 SSL_CTX *ctx; 1133 long time; 1134 struct lhash_st_SSL_SESSION *cache; 1135 } TIMEOUT_PARAM; 1136 1137 static void 1138 timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p) 1139 { 1140 if ((p->time == 0) || (p->time > (s->time + s->timeout))) { 1141 /* timeout */ 1142 /* The reason we don't call SSL_CTX_remove_session() is to 1143 * save on locking overhead */ 1144 (void)lh_SSL_SESSION_delete(p->cache, s); 1145 SSL_SESSION_list_remove(p->ctx, s); 1146 s->not_resumable = 1; 1147 if (p->ctx->remove_session_cb != NULL) 1148 p->ctx->remove_session_cb(p->ctx, s); 1149 SSL_SESSION_free(s); 1150 } 1151 } 1152 1153 static void 1154 timeout_LHASH_DOALL_ARG(void *arg1, void *arg2) 1155 { 1156 SSL_SESSION *a = arg1; 1157 TIMEOUT_PARAM *b = arg2; 1158 1159 timeout_doall_arg(a, b); 1160 } 1161 1162 /* XXX 2038 */ 1163 void 1164 SSL_CTX_flush_sessions(SSL_CTX *s, long t) 1165 { 1166 unsigned long i; 1167 TIMEOUT_PARAM tp; 1168 1169 tp.ctx = s; 1170 tp.cache = s->sessions; 1171 if (tp.cache == NULL) 1172 return; 1173 tp.time = t; 1174 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 1175 i = CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load; 1176 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load = 0; 1177 lh_SSL_SESSION_doall_arg(tp.cache, timeout_LHASH_DOALL_ARG, 1178 TIMEOUT_PARAM, &tp); 1179 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load = i; 1180 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 1181 } 1182 LSSL_ALIAS(SSL_CTX_flush_sessions); 1183 1184 int 1185 ssl_clear_bad_session(SSL *s) 1186 { 1187 if ((s->session != NULL) && !(s->shutdown & SSL_SENT_SHUTDOWN) && 1188 !(SSL_in_init(s) || SSL_in_before(s))) { 1189 SSL_CTX_remove_session(s->ctx, s->session); 1190 return (1); 1191 } else 1192 return (0); 1193 } 1194 1195 /* locked by SSL_CTX in the calling function */ 1196 static void 1197 SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) 1198 { 1199 if (s->next == NULL || s->prev == NULL) 1200 return; 1201 1202 if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { 1203 /* last element in list */ 1204 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { 1205 /* only one element in list */ 1206 ctx->session_cache_head = NULL; 1207 ctx->session_cache_tail = NULL; 1208 } else { 1209 ctx->session_cache_tail = s->prev; 1210 s->prev->next = 1211 (SSL_SESSION *)&(ctx->session_cache_tail); 1212 } 1213 } else { 1214 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { 1215 /* first element in list */ 1216 ctx->session_cache_head = s->next; 1217 s->next->prev = 1218 (SSL_SESSION *)&(ctx->session_cache_head); 1219 } else { 1220 /* middle of list */ 1221 s->next->prev = s->prev; 1222 s->prev->next = s->next; 1223 } 1224 } 1225 s->prev = s->next = NULL; 1226 } 1227 1228 static void 1229 SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) 1230 { 1231 if (s->next != NULL && s->prev != NULL) 1232 SSL_SESSION_list_remove(ctx, s); 1233 1234 if (ctx->session_cache_head == NULL) { 1235 ctx->session_cache_head = s; 1236 ctx->session_cache_tail = s; 1237 s->prev = (SSL_SESSION *)&(ctx->session_cache_head); 1238 s->next = (SSL_SESSION *)&(ctx->session_cache_tail); 1239 } else { 1240 s->next = ctx->session_cache_head; 1241 s->next->prev = s; 1242 s->prev = (SSL_SESSION *)&(ctx->session_cache_head); 1243 ctx->session_cache_head = s; 1244 } 1245 } 1246 1247 void 1248 SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, 1249 int (*cb)(struct ssl_st *ssl, SSL_SESSION *sess)) { 1250 ctx->new_session_cb = cb; 1251 } 1252 LSSL_ALIAS(SSL_CTX_sess_set_new_cb); 1253 1254 int 1255 (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess) 1256 { 1257 return ctx->new_session_cb; 1258 } 1259 LSSL_ALIAS(SSL_CTX_sess_get_new_cb); 1260 1261 void 1262 SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, 1263 void (*cb)(SSL_CTX *ctx, SSL_SESSION *sess)) 1264 { 1265 ctx->remove_session_cb = cb; 1266 } 1267 LSSL_ALIAS(SSL_CTX_sess_set_remove_cb); 1268 1269 void 1270 (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx, SSL_SESSION *sess) 1271 { 1272 return ctx->remove_session_cb; 1273 } 1274 LSSL_ALIAS(SSL_CTX_sess_get_remove_cb); 1275 1276 void 1277 SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, SSL_SESSION *(*cb)(struct ssl_st *ssl, 1278 const unsigned char *data, int len, int *copy)) 1279 { 1280 ctx->get_session_cb = cb; 1281 } 1282 LSSL_ALIAS(SSL_CTX_sess_set_get_cb); 1283 1284 SSL_SESSION * 1285 (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, const unsigned char *data, 1286 int len, int *copy) 1287 { 1288 return ctx->get_session_cb; 1289 } 1290 LSSL_ALIAS(SSL_CTX_sess_get_get_cb); 1291 1292 void 1293 SSL_CTX_set_info_callback(SSL_CTX *ctx, 1294 void (*cb)(const SSL *ssl, int type, int val)) 1295 { 1296 ctx->info_callback = cb; 1297 } 1298 LSSL_ALIAS(SSL_CTX_set_info_callback); 1299 1300 void 1301 (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type, int val) 1302 { 1303 return ctx->info_callback; 1304 } 1305 LSSL_ALIAS(SSL_CTX_get_info_callback); 1306 1307 void 1308 SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, 1309 int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey)) 1310 { 1311 ctx->client_cert_cb = cb; 1312 } 1313 LSSL_ALIAS(SSL_CTX_set_client_cert_cb); 1314 1315 int 1316 (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509, 1317 EVP_PKEY **pkey) 1318 { 1319 return ctx->client_cert_cb; 1320 } 1321 LSSL_ALIAS(SSL_CTX_get_client_cert_cb); 1322 1323 #ifndef OPENSSL_NO_ENGINE 1324 int 1325 SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) 1326 { 1327 if (!ENGINE_init(e)) { 1328 SSLerrorx(ERR_R_ENGINE_LIB); 1329 return 0; 1330 } 1331 if (!ENGINE_get_ssl_client_cert_function(e)) { 1332 SSLerrorx(SSL_R_NO_CLIENT_CERT_METHOD); 1333 ENGINE_finish(e); 1334 return 0; 1335 } 1336 ctx->client_cert_engine = e; 1337 return 1; 1338 } 1339 LSSL_ALIAS(SSL_CTX_set_client_cert_engine); 1340 #endif 1341 1342 void 1343 SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, 1344 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)) 1345 { 1346 ctx->app_gen_cookie_cb = cb; 1347 } 1348 LSSL_ALIAS(SSL_CTX_set_cookie_generate_cb); 1349 1350 void 1351 SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, 1352 int (*cb)(SSL *ssl, const unsigned char *cookie, unsigned int cookie_len)) 1353 { 1354 ctx->app_verify_cookie_cb = cb; 1355 } 1356 LSSL_ALIAS(SSL_CTX_set_cookie_verify_cb); 1357 1358 int 1359 PEM_write_SSL_SESSION(FILE *fp, SSL_SESSION *x) 1360 { 1361 return PEM_ASN1_write((i2d_of_void *)i2d_SSL_SESSION, 1362 PEM_STRING_SSL_SESSION, fp, x, NULL, NULL, 0, NULL, NULL); 1363 } 1364 LSSL_ALIAS(PEM_write_SSL_SESSION); 1365 1366 SSL_SESSION * 1367 PEM_read_SSL_SESSION(FILE *fp, SSL_SESSION **x, pem_password_cb *cb, void *u) 1368 { 1369 return PEM_ASN1_read((d2i_of_void *)d2i_SSL_SESSION, 1370 PEM_STRING_SSL_SESSION, fp, (void **)x, cb, u); 1371 } 1372 LSSL_ALIAS(PEM_read_SSL_SESSION); 1373 1374 SSL_SESSION * 1375 PEM_read_bio_SSL_SESSION(BIO *bp, SSL_SESSION **x, pem_password_cb *cb, void *u) 1376 { 1377 return PEM_ASN1_read_bio((d2i_of_void *)d2i_SSL_SESSION, 1378 PEM_STRING_SSL_SESSION, bp, (void **)x, cb, u); 1379 } 1380 LSSL_ALIAS(PEM_read_bio_SSL_SESSION); 1381 1382 int 1383 PEM_write_bio_SSL_SESSION(BIO *bp, SSL_SESSION *x) 1384 { 1385 return PEM_ASN1_write_bio((i2d_of_void *)i2d_SSL_SESSION, 1386 PEM_STRING_SSL_SESSION, bp, x, NULL, NULL, 0, NULL, NULL); 1387 } 1388 LSSL_ALIAS(PEM_write_bio_SSL_SESSION); 1389