1 /* $OpenBSD: ssl_lib.c,v 1.267 2021/09/08 17:27:33 tb 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) 1998-2007 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 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <stdio.h> 148 149 #include <openssl/bn.h> 150 #include <openssl/dh.h> 151 #include <openssl/lhash.h> 152 #include <openssl/objects.h> 153 #include <openssl/ocsp.h> 154 #include <openssl/opensslconf.h> 155 #include <openssl/x509v3.h> 156 157 #ifndef OPENSSL_NO_ENGINE 158 #include <openssl/engine.h> 159 #endif 160 161 #include "bytestring.h" 162 #include "dtls_locl.h" 163 #include "ssl_locl.h" 164 #include "ssl_sigalgs.h" 165 166 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168 int 169 SSL_clear(SSL *s) 170 { 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->ssl_new(s)) 213 return (0); 214 } else 215 s->method->ssl_clear(s); 216 217 return (1); 218 } 219 220 /* Used to change an SSL_CTXs default SSL method type */ 221 int 222 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223 { 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 230 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 231 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 232 return (0); 233 } 234 return (1); 235 } 236 237 SSL * 238 SSL_new(SSL_CTX *ctx) 239 { 240 SSL *s; 241 242 if (ctx == NULL) { 243 SSLerrorx(SSL_R_NULL_SSL_CTX); 244 return (NULL); 245 } 246 if (ctx->method == NULL) { 247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 248 return (NULL); 249 } 250 251 if ((s = calloc(1, sizeof(*s))) == NULL) 252 goto err; 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 254 goto err; 255 256 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 257 goto err; 258 259 s->internal->min_tls_version = ctx->internal->min_tls_version; 260 s->internal->max_tls_version = ctx->internal->max_tls_version; 261 s->internal->min_proto_version = ctx->internal->min_proto_version; 262 s->internal->max_proto_version = ctx->internal->max_proto_version; 263 264 s->internal->options = ctx->internal->options; 265 s->internal->mode = ctx->internal->mode; 266 s->internal->max_cert_list = ctx->internal->max_cert_list; 267 268 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 269 goto err; 270 271 s->internal->read_ahead = ctx->internal->read_ahead; 272 s->internal->msg_callback = ctx->internal->msg_callback; 273 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 274 s->verify_mode = ctx->verify_mode; 275 s->sid_ctx_length = ctx->sid_ctx_length; 276 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 277 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 278 s->internal->verify_callback = ctx->internal->default_verify_callback; 279 s->internal->generate_session_id = ctx->internal->generate_session_id; 280 281 s->param = X509_VERIFY_PARAM_new(); 282 if (!s->param) 283 goto err; 284 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 285 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 286 s->max_send_fragment = ctx->internal->max_send_fragment; 287 288 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 289 s->ctx = ctx; 290 s->internal->tlsext_debug_cb = 0; 291 s->internal->tlsext_debug_arg = NULL; 292 s->internal->tlsext_ticket_expected = 0; 293 s->tlsext_status_type = -1; 294 s->internal->tlsext_status_expected = 0; 295 s->internal->tlsext_ocsp_ids = NULL; 296 s->internal->tlsext_ocsp_exts = NULL; 297 s->internal->tlsext_ocsp_resp = NULL; 298 s->internal->tlsext_ocsp_resp_len = 0; 299 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 300 s->initial_ctx = ctx; 301 302 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 303 s->internal->tlsext_ecpointformatlist = 304 calloc(ctx->internal->tlsext_ecpointformatlist_length, 305 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 306 if (s->internal->tlsext_ecpointformatlist == NULL) 307 goto err; 308 memcpy(s->internal->tlsext_ecpointformatlist, 309 ctx->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist_length * 311 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 312 s->internal->tlsext_ecpointformatlist_length = 313 ctx->internal->tlsext_ecpointformatlist_length; 314 } 315 if (ctx->internal->tlsext_supportedgroups != NULL) { 316 s->internal->tlsext_supportedgroups = 317 calloc(ctx->internal->tlsext_supportedgroups_length, 318 sizeof(ctx->internal->tlsext_supportedgroups[0])); 319 if (s->internal->tlsext_supportedgroups == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_supportedgroups, 322 ctx->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups_length * 324 sizeof(ctx->internal->tlsext_supportedgroups[0])); 325 s->internal->tlsext_supportedgroups_length = 326 ctx->internal->tlsext_supportedgroups_length; 327 } 328 329 if (s->ctx->internal->alpn_client_proto_list != NULL) { 330 s->internal->alpn_client_proto_list = 331 malloc(s->ctx->internal->alpn_client_proto_list_len); 332 if (s->internal->alpn_client_proto_list == NULL) 333 goto err; 334 memcpy(s->internal->alpn_client_proto_list, 335 s->ctx->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list_len); 337 s->internal->alpn_client_proto_list_len = 338 s->ctx->internal->alpn_client_proto_list_len; 339 } 340 341 s->verify_result = X509_V_OK; 342 343 s->method = ctx->method; 344 345 if (!s->method->ssl_new(s)) 346 goto err; 347 348 s->references = 1; 349 s->server = ctx->method->server; 350 351 SSL_clear(s); 352 353 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 354 355 return (s); 356 357 err: 358 SSL_free(s); 359 SSLerrorx(ERR_R_MALLOC_FAILURE); 360 return (NULL); 361 } 362 363 int 364 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 365 unsigned int sid_ctx_len) 366 { 367 if (sid_ctx_len > sizeof ctx->sid_ctx) { 368 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 369 return (0); 370 } 371 ctx->sid_ctx_length = sid_ctx_len; 372 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 373 374 return (1); 375 } 376 377 int 378 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 379 unsigned int sid_ctx_len) 380 { 381 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 382 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 383 return (0); 384 } 385 ssl->sid_ctx_length = sid_ctx_len; 386 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 387 388 return (1); 389 } 390 391 int 392 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 393 { 394 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 395 ctx->internal->generate_session_id = cb; 396 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 397 return (1); 398 } 399 400 int 401 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 402 { 403 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 404 ssl->internal->generate_session_id = cb; 405 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 406 return (1); 407 } 408 409 int 410 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 411 unsigned int id_len) 412 { 413 /* 414 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 415 * shows how we can "construct" a session to give us the desired 416 * check - ie. to find if there's a session in the hash table 417 * that would conflict with any new session built out of this 418 * id/id_len and the ssl_version in use by this SSL. 419 */ 420 SSL_SESSION r, *p; 421 422 if (id_len > sizeof r.session_id) 423 return (0); 424 425 r.ssl_version = ssl->version; 426 r.session_id_length = id_len; 427 memcpy(r.session_id, id, id_len); 428 429 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 430 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 431 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 432 return (p != NULL); 433 } 434 435 int 436 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 437 { 438 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 439 } 440 441 int 442 SSL_set_purpose(SSL *s, int purpose) 443 { 444 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 445 } 446 447 int 448 SSL_CTX_set_trust(SSL_CTX *s, int trust) 449 { 450 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 451 } 452 453 int 454 SSL_set_trust(SSL *s, int trust) 455 { 456 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 457 } 458 459 int 460 SSL_set1_host(SSL *s, const char *hostname) 461 { 462 struct in_addr ina; 463 struct in6_addr in6a; 464 465 if (hostname != NULL && *hostname != '\0' && 466 (inet_pton(AF_INET, hostname, &ina) == 1 || 467 inet_pton(AF_INET6, hostname, &in6a) == 1)) 468 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 469 else 470 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 471 } 472 473 void 474 SSL_set_hostflags(SSL *s, unsigned int flags) 475 { 476 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 477 } 478 479 const char * 480 SSL_get0_peername(SSL *s) 481 { 482 return X509_VERIFY_PARAM_get0_peername(s->param); 483 } 484 485 X509_VERIFY_PARAM * 486 SSL_CTX_get0_param(SSL_CTX *ctx) 487 { 488 return (ctx->param); 489 } 490 491 int 492 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 493 { 494 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 495 } 496 497 X509_VERIFY_PARAM * 498 SSL_get0_param(SSL *ssl) 499 { 500 return (ssl->param); 501 } 502 503 int 504 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 505 { 506 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 507 } 508 509 void 510 SSL_free(SSL *s) 511 { 512 int i; 513 514 if (s == NULL) 515 return; 516 517 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 518 if (i > 0) 519 return; 520 521 X509_VERIFY_PARAM_free(s->param); 522 523 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 524 525 if (s->bbio != NULL) { 526 /* If the buffering BIO is in place, pop it off */ 527 if (s->bbio == s->wbio) { 528 s->wbio = BIO_pop(s->wbio); 529 } 530 BIO_free(s->bbio); 531 s->bbio = NULL; 532 } 533 534 if (s->rbio != s->wbio) 535 BIO_free_all(s->rbio); 536 BIO_free_all(s->wbio); 537 538 tls13_ctx_free(s->internal->tls13); 539 540 ssl3_release_init_buffer(s); 541 542 sk_SSL_CIPHER_free(s->cipher_list); 543 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 544 545 /* Make the next call work :-) */ 546 if (s->session != NULL) { 547 ssl_clear_bad_session(s); 548 SSL_SESSION_free(s->session); 549 } 550 551 ssl_clear_cipher_state(s); 552 553 ssl_cert_free(s->cert); 554 555 free(s->tlsext_hostname); 556 SSL_CTX_free(s->initial_ctx); 557 558 free(s->internal->tlsext_ecpointformatlist); 559 free(s->internal->tlsext_supportedgroups); 560 561 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 562 X509_EXTENSION_free); 563 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 564 free(s->internal->tlsext_ocsp_resp); 565 566 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 567 568 if (s->method != NULL) 569 s->method->ssl_free(s); 570 571 SSL_CTX_free(s->ctx); 572 573 free(s->internal->alpn_client_proto_list); 574 575 #ifndef OPENSSL_NO_SRTP 576 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 577 #endif 578 579 tls12_record_layer_free(s->internal->rl); 580 581 free(s->internal); 582 free(s); 583 } 584 585 int 586 SSL_up_ref(SSL *s) 587 { 588 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 589 return (refs > 1) ? 1 : 0; 590 } 591 592 void 593 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 594 { 595 /* If the output buffering BIO is still in place, remove it */ 596 if (s->bbio != NULL) { 597 if (s->wbio == s->bbio) { 598 s->wbio = s->wbio->next_bio; 599 s->bbio->next_bio = NULL; 600 } 601 } 602 603 if (s->rbio != rbio && s->rbio != s->wbio) 604 BIO_free_all(s->rbio); 605 if (s->wbio != wbio) 606 BIO_free_all(s->wbio); 607 s->rbio = rbio; 608 s->wbio = wbio; 609 } 610 611 BIO * 612 SSL_get_rbio(const SSL *s) 613 { 614 return (s->rbio); 615 } 616 617 void 618 SSL_set0_rbio(SSL *s, BIO *rbio) 619 { 620 BIO_free_all(s->rbio); 621 s->rbio = rbio; 622 } 623 624 BIO * 625 SSL_get_wbio(const SSL *s) 626 { 627 return (s->wbio); 628 } 629 630 int 631 SSL_get_fd(const SSL *s) 632 { 633 return (SSL_get_rfd(s)); 634 } 635 636 int 637 SSL_get_rfd(const SSL *s) 638 { 639 int ret = -1; 640 BIO *b, *r; 641 642 b = SSL_get_rbio(s); 643 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 644 if (r != NULL) 645 BIO_get_fd(r, &ret); 646 return (ret); 647 } 648 649 int 650 SSL_get_wfd(const SSL *s) 651 { 652 int ret = -1; 653 BIO *b, *r; 654 655 b = SSL_get_wbio(s); 656 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 657 if (r != NULL) 658 BIO_get_fd(r, &ret); 659 return (ret); 660 } 661 662 int 663 SSL_set_fd(SSL *s, int fd) 664 { 665 int ret = 0; 666 BIO *bio = NULL; 667 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, bio, bio); 676 ret = 1; 677 err: 678 return (ret); 679 } 680 681 int 682 SSL_set_wfd(SSL *s, int fd) 683 { 684 int ret = 0; 685 BIO *bio = NULL; 686 687 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 688 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 689 bio = BIO_new(BIO_s_socket()); 690 691 if (bio == NULL) { 692 SSLerror(s, ERR_R_BUF_LIB); 693 goto err; 694 } 695 BIO_set_fd(bio, fd, BIO_NOCLOSE); 696 SSL_set_bio(s, SSL_get_rbio(s), bio); 697 } else 698 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 699 ret = 1; 700 err: 701 return (ret); 702 } 703 704 int 705 SSL_set_rfd(SSL *s, int fd) 706 { 707 int ret = 0; 708 BIO *bio = NULL; 709 710 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 711 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 712 bio = BIO_new(BIO_s_socket()); 713 714 if (bio == NULL) { 715 SSLerror(s, ERR_R_BUF_LIB); 716 goto err; 717 } 718 BIO_set_fd(bio, fd, BIO_NOCLOSE); 719 SSL_set_bio(s, bio, SSL_get_wbio(s)); 720 } else 721 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 722 ret = 1; 723 err: 724 return (ret); 725 } 726 727 728 /* return length of latest Finished message we sent, copy to 'buf' */ 729 size_t 730 SSL_get_finished(const SSL *s, void *buf, size_t count) 731 { 732 size_t ret; 733 734 ret = S3I(s)->hs.finished_len; 735 if (count > ret) 736 count = ret; 737 memcpy(buf, S3I(s)->hs.finished, count); 738 return (ret); 739 } 740 741 /* return length of latest Finished message we expected, copy to 'buf' */ 742 size_t 743 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 744 { 745 size_t ret; 746 747 ret = S3I(s)->hs.peer_finished_len; 748 if (count > ret) 749 count = ret; 750 memcpy(buf, S3I(s)->hs.peer_finished, count); 751 return (ret); 752 } 753 754 755 int 756 SSL_get_verify_mode(const SSL *s) 757 { 758 return (s->verify_mode); 759 } 760 761 int 762 SSL_get_verify_depth(const SSL *s) 763 { 764 return (X509_VERIFY_PARAM_get_depth(s->param)); 765 } 766 767 int 768 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 769 { 770 return (s->internal->verify_callback); 771 } 772 773 int 774 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 775 { 776 return (ctx->verify_mode); 777 } 778 779 int 780 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 781 { 782 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 783 } 784 785 int 786 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 787 { 788 return (ctx->internal->default_verify_callback); 789 } 790 791 void 792 SSL_set_verify(SSL *s, int mode, 793 int (*callback)(int ok, X509_STORE_CTX *ctx)) 794 { 795 s->verify_mode = mode; 796 if (callback != NULL) 797 s->internal->verify_callback = callback; 798 } 799 800 void 801 SSL_set_verify_depth(SSL *s, int depth) 802 { 803 X509_VERIFY_PARAM_set_depth(s->param, depth); 804 } 805 806 void 807 SSL_set_read_ahead(SSL *s, int yes) 808 { 809 s->internal->read_ahead = yes; 810 } 811 812 int 813 SSL_get_read_ahead(const SSL *s) 814 { 815 return (s->internal->read_ahead); 816 } 817 818 int 819 SSL_pending(const SSL *s) 820 { 821 return (s->method->ssl_pending(s)); 822 } 823 824 X509 * 825 SSL_get_peer_certificate(const SSL *s) 826 { 827 X509 *r; 828 829 if ((s == NULL) || (s->session == NULL)) 830 r = NULL; 831 else 832 r = s->session->peer; 833 834 if (r == NULL) 835 return (r); 836 837 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 838 839 return (r); 840 } 841 842 STACK_OF(X509) * 843 SSL_get_peer_cert_chain(const SSL *s) 844 { 845 STACK_OF(X509) *r; 846 847 if ((s == NULL) || (s->session == NULL) || 848 (SSI(s)->sess_cert == NULL)) 849 r = NULL; 850 else 851 r = SSI(s)->sess_cert->cert_chain; 852 853 /* 854 * If we are a client, cert_chain includes the peer's own 855 * certificate; 856 * if we are a server, it does not. 857 */ 858 return (r); 859 } 860 861 /* 862 * Now in theory, since the calling process own 't' it should be safe to 863 * modify. We need to be able to read f without being hassled 864 */ 865 int 866 SSL_copy_session_id(SSL *t, const SSL *f) 867 { 868 CERT *tmp; 869 870 /* Do we need to do SSL locking? */ 871 if (!SSL_set_session(t, SSL_get_session(f))) 872 return 0; 873 874 /* What if we are set up for one protocol but want to talk another? */ 875 if (t->method != f->method) { 876 t->method->ssl_free(t); 877 t->method = f->method; 878 if (!t->method->ssl_new(t)) 879 return 0; 880 } 881 882 tmp = t->cert; 883 if (f->cert != NULL) { 884 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 885 t->cert = f->cert; 886 } else 887 t->cert = NULL; 888 ssl_cert_free(tmp); 889 890 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 891 return 0; 892 893 return 1; 894 } 895 896 /* Fix this so it checks all the valid key/cert options */ 897 int 898 SSL_CTX_check_private_key(const SSL_CTX *ctx) 899 { 900 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 901 (ctx->internal->cert->key->x509 == NULL)) { 902 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 903 return (0); 904 } 905 if (ctx->internal->cert->key->privatekey == NULL) { 906 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 907 return (0); 908 } 909 return (X509_check_private_key(ctx->internal->cert->key->x509, 910 ctx->internal->cert->key->privatekey)); 911 } 912 913 /* Fix this function so that it takes an optional type parameter */ 914 int 915 SSL_check_private_key(const SSL *ssl) 916 { 917 if (ssl == NULL) { 918 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 919 return (0); 920 } 921 if (ssl->cert == NULL) { 922 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 923 return (0); 924 } 925 if (ssl->cert->key->x509 == NULL) { 926 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 927 return (0); 928 } 929 if (ssl->cert->key->privatekey == NULL) { 930 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 931 return (0); 932 } 933 return (X509_check_private_key(ssl->cert->key->x509, 934 ssl->cert->key->privatekey)); 935 } 936 937 int 938 SSL_accept(SSL *s) 939 { 940 if (s->internal->handshake_func == NULL) 941 SSL_set_accept_state(s); /* Not properly initialized yet */ 942 943 return (s->method->ssl_accept(s)); 944 } 945 946 int 947 SSL_connect(SSL *s) 948 { 949 if (s->internal->handshake_func == NULL) 950 SSL_set_connect_state(s); /* Not properly initialized yet */ 951 952 return (s->method->ssl_connect(s)); 953 } 954 955 int 956 SSL_is_dtls(const SSL *s) 957 { 958 return s->method->dtls; 959 } 960 961 int 962 SSL_is_server(const SSL *s) 963 { 964 return s->server; 965 } 966 967 static long 968 ssl_get_default_timeout() 969 { 970 /* 971 * 2 hours, the 24 hours mentioned in the TLSv1 spec 972 * is way too long for http, the cache would over fill. 973 */ 974 return (2 * 60 * 60); 975 } 976 977 long 978 SSL_get_default_timeout(const SSL *s) 979 { 980 return (ssl_get_default_timeout()); 981 } 982 983 int 984 SSL_read(SSL *s, void *buf, int num) 985 { 986 if (s->internal->handshake_func == NULL) { 987 SSLerror(s, SSL_R_UNINITIALIZED); 988 return (-1); 989 } 990 991 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 992 s->internal->rwstate = SSL_NOTHING; 993 return (0); 994 } 995 return ssl3_read(s, buf, num); 996 } 997 998 int 999 SSL_peek(SSL *s, void *buf, int num) 1000 { 1001 if (s->internal->handshake_func == NULL) { 1002 SSLerror(s, SSL_R_UNINITIALIZED); 1003 return (-1); 1004 } 1005 1006 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1007 return (0); 1008 } 1009 return ssl3_peek(s, buf, num); 1010 } 1011 1012 int 1013 SSL_write(SSL *s, const void *buf, int num) 1014 { 1015 if (s->internal->handshake_func == NULL) { 1016 SSLerror(s, SSL_R_UNINITIALIZED); 1017 return (-1); 1018 } 1019 1020 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1021 s->internal->rwstate = SSL_NOTHING; 1022 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1023 return (-1); 1024 } 1025 return ssl3_write(s, buf, num); 1026 } 1027 1028 uint32_t 1029 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1030 { 1031 return 0; 1032 } 1033 1034 int 1035 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1036 { 1037 return 1; 1038 } 1039 1040 uint32_t 1041 SSL_get_max_early_data(const SSL *s) 1042 { 1043 return 0; 1044 } 1045 1046 int 1047 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1048 { 1049 return 1; 1050 } 1051 1052 int 1053 SSL_get_early_data_status(const SSL *s) 1054 { 1055 return SSL_EARLY_DATA_REJECTED; 1056 } 1057 1058 int 1059 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1060 { 1061 *readbytes = 0; 1062 1063 if (!s->server) { 1064 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1065 return SSL_READ_EARLY_DATA_ERROR; 1066 } 1067 1068 return SSL_READ_EARLY_DATA_FINISH; 1069 } 1070 1071 int 1072 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1073 { 1074 *written = 0; 1075 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1076 return 0; 1077 } 1078 1079 int 1080 SSL_shutdown(SSL *s) 1081 { 1082 /* 1083 * Note that this function behaves differently from what one might 1084 * expect. Return values are 0 for no success (yet), 1085 * 1 for success; but calling it once is usually not enough, 1086 * even if blocking I/O is used (see ssl3_shutdown). 1087 */ 1088 1089 if (s->internal->handshake_func == NULL) { 1090 SSLerror(s, SSL_R_UNINITIALIZED); 1091 return (-1); 1092 } 1093 1094 if (s != NULL && !SSL_in_init(s)) 1095 return (s->method->ssl_shutdown(s)); 1096 1097 return (1); 1098 } 1099 1100 int 1101 SSL_renegotiate(SSL *s) 1102 { 1103 if (s->internal->renegotiate == 0) 1104 s->internal->renegotiate = 1; 1105 1106 s->internal->new_session = 1; 1107 1108 return (s->method->ssl_renegotiate(s)); 1109 } 1110 1111 int 1112 SSL_renegotiate_abbreviated(SSL *s) 1113 { 1114 if (s->internal->renegotiate == 0) 1115 s->internal->renegotiate = 1; 1116 1117 s->internal->new_session = 0; 1118 1119 return (s->method->ssl_renegotiate(s)); 1120 } 1121 1122 int 1123 SSL_renegotiate_pending(SSL *s) 1124 { 1125 /* 1126 * Becomes true when negotiation is requested; 1127 * false again once a handshake has finished. 1128 */ 1129 return (s->internal->renegotiate != 0); 1130 } 1131 1132 long 1133 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1134 { 1135 long l; 1136 1137 switch (cmd) { 1138 case SSL_CTRL_GET_READ_AHEAD: 1139 return (s->internal->read_ahead); 1140 case SSL_CTRL_SET_READ_AHEAD: 1141 l = s->internal->read_ahead; 1142 s->internal->read_ahead = larg; 1143 return (l); 1144 1145 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1146 s->internal->msg_callback_arg = parg; 1147 return (1); 1148 1149 case SSL_CTRL_OPTIONS: 1150 return (s->internal->options|=larg); 1151 case SSL_CTRL_CLEAR_OPTIONS: 1152 return (s->internal->options&=~larg); 1153 case SSL_CTRL_MODE: 1154 return (s->internal->mode|=larg); 1155 case SSL_CTRL_CLEAR_MODE: 1156 return (s->internal->mode &=~larg); 1157 case SSL_CTRL_GET_MAX_CERT_LIST: 1158 return (s->internal->max_cert_list); 1159 case SSL_CTRL_SET_MAX_CERT_LIST: 1160 l = s->internal->max_cert_list; 1161 s->internal->max_cert_list = larg; 1162 return (l); 1163 case SSL_CTRL_SET_MTU: 1164 #ifndef OPENSSL_NO_DTLS1 1165 if (larg < (long)dtls1_min_mtu()) 1166 return (0); 1167 #endif 1168 if (SSL_is_dtls(s)) { 1169 D1I(s)->mtu = larg; 1170 return (larg); 1171 } 1172 return (0); 1173 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1174 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1175 return (0); 1176 s->max_send_fragment = larg; 1177 return (1); 1178 case SSL_CTRL_GET_RI_SUPPORT: 1179 if (s->s3) 1180 return (S3I(s)->send_connection_binding); 1181 else return (0); 1182 default: 1183 if (SSL_is_dtls(s)) 1184 return dtls1_ctrl(s, cmd, larg, parg); 1185 return ssl3_ctrl(s, cmd, larg, parg); 1186 } 1187 } 1188 1189 long 1190 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1191 { 1192 switch (cmd) { 1193 case SSL_CTRL_SET_MSG_CALLBACK: 1194 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1195 return (1); 1196 1197 default: 1198 return (ssl3_callback_ctrl(s, cmd, fp)); 1199 } 1200 } 1201 1202 struct lhash_st_SSL_SESSION * 1203 SSL_CTX_sessions(SSL_CTX *ctx) 1204 { 1205 return (ctx->internal->sessions); 1206 } 1207 1208 long 1209 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1210 { 1211 long l; 1212 1213 switch (cmd) { 1214 case SSL_CTRL_GET_READ_AHEAD: 1215 return (ctx->internal->read_ahead); 1216 case SSL_CTRL_SET_READ_AHEAD: 1217 l = ctx->internal->read_ahead; 1218 ctx->internal->read_ahead = larg; 1219 return (l); 1220 1221 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1222 ctx->internal->msg_callback_arg = parg; 1223 return (1); 1224 1225 case SSL_CTRL_GET_MAX_CERT_LIST: 1226 return (ctx->internal->max_cert_list); 1227 case SSL_CTRL_SET_MAX_CERT_LIST: 1228 l = ctx->internal->max_cert_list; 1229 ctx->internal->max_cert_list = larg; 1230 return (l); 1231 1232 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1233 l = ctx->internal->session_cache_size; 1234 ctx->internal->session_cache_size = larg; 1235 return (l); 1236 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1237 return (ctx->internal->session_cache_size); 1238 case SSL_CTRL_SET_SESS_CACHE_MODE: 1239 l = ctx->internal->session_cache_mode; 1240 ctx->internal->session_cache_mode = larg; 1241 return (l); 1242 case SSL_CTRL_GET_SESS_CACHE_MODE: 1243 return (ctx->internal->session_cache_mode); 1244 1245 case SSL_CTRL_SESS_NUMBER: 1246 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1247 case SSL_CTRL_SESS_CONNECT: 1248 return (ctx->internal->stats.sess_connect); 1249 case SSL_CTRL_SESS_CONNECT_GOOD: 1250 return (ctx->internal->stats.sess_connect_good); 1251 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1252 return (ctx->internal->stats.sess_connect_renegotiate); 1253 case SSL_CTRL_SESS_ACCEPT: 1254 return (ctx->internal->stats.sess_accept); 1255 case SSL_CTRL_SESS_ACCEPT_GOOD: 1256 return (ctx->internal->stats.sess_accept_good); 1257 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1258 return (ctx->internal->stats.sess_accept_renegotiate); 1259 case SSL_CTRL_SESS_HIT: 1260 return (ctx->internal->stats.sess_hit); 1261 case SSL_CTRL_SESS_CB_HIT: 1262 return (ctx->internal->stats.sess_cb_hit); 1263 case SSL_CTRL_SESS_MISSES: 1264 return (ctx->internal->stats.sess_miss); 1265 case SSL_CTRL_SESS_TIMEOUTS: 1266 return (ctx->internal->stats.sess_timeout); 1267 case SSL_CTRL_SESS_CACHE_FULL: 1268 return (ctx->internal->stats.sess_cache_full); 1269 case SSL_CTRL_OPTIONS: 1270 return (ctx->internal->options|=larg); 1271 case SSL_CTRL_CLEAR_OPTIONS: 1272 return (ctx->internal->options&=~larg); 1273 case SSL_CTRL_MODE: 1274 return (ctx->internal->mode|=larg); 1275 case SSL_CTRL_CLEAR_MODE: 1276 return (ctx->internal->mode&=~larg); 1277 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1278 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1279 return (0); 1280 ctx->internal->max_send_fragment = larg; 1281 return (1); 1282 default: 1283 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1284 } 1285 } 1286 1287 long 1288 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1289 { 1290 switch (cmd) { 1291 case SSL_CTRL_SET_MSG_CALLBACK: 1292 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1293 return (1); 1294 1295 default: 1296 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1297 } 1298 } 1299 1300 int 1301 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1302 { 1303 long l; 1304 1305 l = a->id - b->id; 1306 if (l == 0L) 1307 return (0); 1308 else 1309 return ((l > 0) ? 1:-1); 1310 } 1311 1312 STACK_OF(SSL_CIPHER) * 1313 SSL_get_ciphers(const SSL *s) 1314 { 1315 if (s == NULL) 1316 return (NULL); 1317 if (s->cipher_list != NULL) 1318 return (s->cipher_list); 1319 1320 return (s->ctx->cipher_list); 1321 } 1322 1323 STACK_OF(SSL_CIPHER) * 1324 SSL_get_client_ciphers(const SSL *s) 1325 { 1326 if (s == NULL || s->session == NULL || !s->server) 1327 return NULL; 1328 return s->session->ciphers; 1329 } 1330 1331 STACK_OF(SSL_CIPHER) * 1332 SSL_get1_supported_ciphers(SSL *s) 1333 { 1334 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1335 const SSL_CIPHER *cipher; 1336 uint16_t min_vers, max_vers; 1337 int i; 1338 1339 if (s == NULL) 1340 return NULL; 1341 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1342 return NULL; 1343 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1344 return NULL; 1345 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1346 return NULL; 1347 1348 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1349 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1350 goto err; 1351 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1352 max_vers)) 1353 continue; 1354 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1355 goto err; 1356 } 1357 1358 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1359 return supported_ciphers; 1360 1361 err: 1362 sk_SSL_CIPHER_free(supported_ciphers); 1363 return NULL; 1364 } 1365 1366 /* See if we have any ECC cipher suites. */ 1367 int 1368 ssl_has_ecc_ciphers(SSL *s) 1369 { 1370 STACK_OF(SSL_CIPHER) *ciphers; 1371 unsigned long alg_k, alg_a; 1372 SSL_CIPHER *cipher; 1373 int i; 1374 1375 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1376 return 0; 1377 1378 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1379 cipher = sk_SSL_CIPHER_value(ciphers, i); 1380 1381 alg_k = cipher->algorithm_mkey; 1382 alg_a = cipher->algorithm_auth; 1383 1384 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1385 return 1; 1386 } 1387 1388 return 0; 1389 } 1390 1391 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1392 const char * 1393 SSL_get_cipher_list(const SSL *s, int n) 1394 { 1395 STACK_OF(SSL_CIPHER) *ciphers; 1396 const SSL_CIPHER *cipher; 1397 1398 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1399 return (NULL); 1400 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1401 return (NULL); 1402 1403 return (cipher->name); 1404 } 1405 1406 STACK_OF(SSL_CIPHER) * 1407 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1408 { 1409 if (ctx == NULL) 1410 return NULL; 1411 return ctx->cipher_list; 1412 } 1413 1414 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1415 int 1416 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1417 { 1418 STACK_OF(SSL_CIPHER) *ciphers; 1419 1420 /* 1421 * ssl_create_cipher_list may return an empty stack if it was unable to 1422 * find a cipher matching the given rule string (for example if the 1423 * rule string specifies a cipher which has been disabled). This is not 1424 * an error as far as ssl_create_cipher_list is concerned, and hence 1425 * ctx->cipher_list has been updated. 1426 */ 1427 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1428 ctx->internal->cipher_list_tls13, str); 1429 if (ciphers == NULL) { 1430 return (0); 1431 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1432 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1433 return (0); 1434 } 1435 return (1); 1436 } 1437 1438 int 1439 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1440 { 1441 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1442 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1443 return 0; 1444 } 1445 if (!ssl_merge_cipherlists(ctx->cipher_list, 1446 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1447 return 0; 1448 1449 return 1; 1450 } 1451 1452 /* Specify the ciphers to be used by the SSL. */ 1453 int 1454 SSL_set_cipher_list(SSL *s, const char *str) 1455 { 1456 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1457 1458 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1459 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1460 1461 /* See comment in SSL_CTX_set_cipher_list. */ 1462 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1463 ciphers_tls13, str); 1464 if (ciphers == NULL) { 1465 return (0); 1466 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1467 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1468 return (0); 1469 } 1470 return (1); 1471 } 1472 1473 int 1474 SSL_set_ciphersuites(SSL *s, const char *str) 1475 { 1476 STACK_OF(SSL_CIPHER) *ciphers; 1477 1478 if ((ciphers = s->cipher_list) == NULL) 1479 ciphers = s->ctx->cipher_list; 1480 1481 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1482 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1483 return (0); 1484 } 1485 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1486 &s->cipher_list)) 1487 return 0; 1488 1489 return 1; 1490 } 1491 1492 char * 1493 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1494 { 1495 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1496 const SSL_CIPHER *cipher; 1497 size_t curlen = 0; 1498 char *end; 1499 int i; 1500 1501 if (!s->server || s->session == NULL || len < 2) 1502 return NULL; 1503 1504 if ((client_ciphers = s->session->ciphers) == NULL) 1505 return NULL; 1506 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1507 return NULL; 1508 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1509 sk_SSL_CIPHER_num(server_ciphers) == 0) 1510 return NULL; 1511 1512 buf[0] = '\0'; 1513 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1514 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1515 1516 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1517 continue; 1518 1519 end = buf + curlen; 1520 if (strlcat(buf, cipher->name, len) >= len || 1521 (curlen = strlcat(buf, ":", len)) >= len) { 1522 /* remove truncated cipher from list */ 1523 *end = '\0'; 1524 break; 1525 } 1526 } 1527 /* remove trailing colon */ 1528 if ((end = strrchr(buf, ':')) != NULL) 1529 *end = '\0'; 1530 return buf; 1531 } 1532 1533 /* 1534 * Return a servername extension value if provided in Client Hello, or NULL. 1535 * So far, only host_name types are defined (RFC 3546). 1536 */ 1537 const char * 1538 SSL_get_servername(const SSL *s, const int type) 1539 { 1540 if (type != TLSEXT_NAMETYPE_host_name) 1541 return (NULL); 1542 1543 return (s->session && !s->tlsext_hostname ? 1544 s->session->tlsext_hostname : 1545 s->tlsext_hostname); 1546 } 1547 1548 int 1549 SSL_get_servername_type(const SSL *s) 1550 { 1551 if (s->session && 1552 (!s->tlsext_hostname ? 1553 s->session->tlsext_hostname : s->tlsext_hostname)) 1554 return (TLSEXT_NAMETYPE_host_name); 1555 return (-1); 1556 } 1557 1558 /* 1559 * SSL_select_next_proto implements standard protocol selection. It is 1560 * expected that this function is called from the callback set by 1561 * SSL_CTX_set_alpn_select_cb. 1562 * 1563 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1564 * strings. The length byte itself is not included in the length. A byte 1565 * string of length 0 is invalid. No byte string may be truncated. 1566 * 1567 * It returns either: 1568 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1569 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1570 */ 1571 int 1572 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1573 const unsigned char *server, unsigned int server_len, 1574 const unsigned char *client, unsigned int client_len) 1575 { 1576 unsigned int i, j; 1577 const unsigned char *result; 1578 int status = OPENSSL_NPN_UNSUPPORTED; 1579 1580 /* 1581 * For each protocol in server preference order, 1582 * see if we support it. 1583 */ 1584 for (i = 0; i < server_len; ) { 1585 for (j = 0; j < client_len; ) { 1586 if (server[i] == client[j] && 1587 memcmp(&server[i + 1], 1588 &client[j + 1], server[i]) == 0) { 1589 /* We found a match */ 1590 result = &server[i]; 1591 status = OPENSSL_NPN_NEGOTIATED; 1592 goto found; 1593 } 1594 j += client[j]; 1595 j++; 1596 } 1597 i += server[i]; 1598 i++; 1599 } 1600 1601 /* There's no overlap between our protocols and the server's list. */ 1602 result = client; 1603 status = OPENSSL_NPN_NO_OVERLAP; 1604 1605 found: 1606 *out = (unsigned char *) result + 1; 1607 *outlen = result[0]; 1608 return (status); 1609 } 1610 1611 /* SSL_get0_next_proto_negotiated is deprecated. */ 1612 void 1613 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1614 unsigned int *len) 1615 { 1616 *data = NULL; 1617 *len = 0; 1618 } 1619 1620 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1621 void 1622 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1623 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1624 { 1625 } 1626 1627 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1628 void 1629 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1630 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1631 unsigned int inlen, void *arg), void *arg) 1632 { 1633 } 1634 1635 /* 1636 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1637 * protocols, which must be in wire-format (i.e. a series of non-empty, 1638 * 8-bit length-prefixed strings). Returns 0 on success. 1639 */ 1640 int 1641 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1642 unsigned int protos_len) 1643 { 1644 int failed = 1; 1645 1646 if (protos == NULL || protos_len == 0) 1647 goto err; 1648 1649 free(ctx->internal->alpn_client_proto_list); 1650 ctx->internal->alpn_client_proto_list = NULL; 1651 ctx->internal->alpn_client_proto_list_len = 0; 1652 1653 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1654 == NULL) 1655 goto err; 1656 ctx->internal->alpn_client_proto_list_len = protos_len; 1657 1658 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1659 1660 failed = 0; 1661 1662 err: 1663 /* NOTE: Return values are the reverse of what you expect. */ 1664 return (failed); 1665 } 1666 1667 /* 1668 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1669 * protocols, which must be in wire-format (i.e. a series of non-empty, 1670 * 8-bit length-prefixed strings). Returns 0 on success. 1671 */ 1672 int 1673 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1674 unsigned int protos_len) 1675 { 1676 int failed = 1; 1677 1678 if (protos == NULL || protos_len == 0) 1679 goto err; 1680 1681 free(ssl->internal->alpn_client_proto_list); 1682 ssl->internal->alpn_client_proto_list = NULL; 1683 ssl->internal->alpn_client_proto_list_len = 0; 1684 1685 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1686 == NULL) 1687 goto err; 1688 ssl->internal->alpn_client_proto_list_len = protos_len; 1689 1690 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1691 1692 failed = 0; 1693 1694 err: 1695 /* NOTE: Return values are the reverse of what you expect. */ 1696 return (failed); 1697 } 1698 1699 /* 1700 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1701 * ClientHello processing in order to select an ALPN protocol from the 1702 * client's list of offered protocols. 1703 */ 1704 void 1705 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1706 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1707 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1708 { 1709 ctx->internal->alpn_select_cb = cb; 1710 ctx->internal->alpn_select_cb_arg = arg; 1711 } 1712 1713 /* 1714 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1715 * it sets data to point to len bytes of protocol name (not including the 1716 * leading length-prefix byte). If the server didn't respond with* a negotiated 1717 * protocol then len will be zero. 1718 */ 1719 void 1720 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1721 unsigned int *len) 1722 { 1723 *data = ssl->s3->internal->alpn_selected; 1724 *len = ssl->s3->internal->alpn_selected_len; 1725 } 1726 1727 void 1728 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1729 { 1730 return; 1731 } 1732 1733 int 1734 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1735 const char *label, size_t llen, const unsigned char *p, size_t plen, 1736 int use_context) 1737 { 1738 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1739 if (!use_context) { 1740 p = NULL; 1741 plen = 0; 1742 } 1743 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1744 out, olen); 1745 } 1746 1747 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1748 use_context)); 1749 } 1750 1751 static unsigned long 1752 ssl_session_hash(const SSL_SESSION *a) 1753 { 1754 unsigned long l; 1755 1756 l = (unsigned long) 1757 ((unsigned int) a->session_id[0] )| 1758 ((unsigned int) a->session_id[1]<< 8L)| 1759 ((unsigned long)a->session_id[2]<<16L)| 1760 ((unsigned long)a->session_id[3]<<24L); 1761 return (l); 1762 } 1763 1764 /* 1765 * NB: If this function (or indeed the hash function which uses a sort of 1766 * coarser function than this one) is changed, ensure 1767 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1768 * able to construct an SSL_SESSION that will collide with any existing session 1769 * with a matching session ID. 1770 */ 1771 static int 1772 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1773 { 1774 if (a->ssl_version != b->ssl_version) 1775 return (1); 1776 if (a->session_id_length != b->session_id_length) 1777 return (1); 1778 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1779 return (1); 1780 return (0); 1781 } 1782 1783 /* 1784 * These wrapper functions should remain rather than redeclaring 1785 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1786 * variable. The reason is that the functions aren't static, they're exposed via 1787 * ssl.h. 1788 */ 1789 static unsigned long 1790 ssl_session_LHASH_HASH(const void *arg) 1791 { 1792 const SSL_SESSION *a = arg; 1793 1794 return ssl_session_hash(a); 1795 } 1796 1797 static int 1798 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1799 { 1800 const SSL_SESSION *a = arg1; 1801 const SSL_SESSION *b = arg2; 1802 1803 return ssl_session_cmp(a, b); 1804 } 1805 1806 SSL_CTX * 1807 SSL_CTX_new(const SSL_METHOD *meth) 1808 { 1809 SSL_CTX *ret; 1810 1811 if (!OPENSSL_init_ssl(0, NULL)) { 1812 SSLerrorx(SSL_R_LIBRARY_BUG); 1813 return (NULL); 1814 } 1815 1816 if (meth == NULL) { 1817 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1818 return (NULL); 1819 } 1820 1821 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1822 SSLerrorx(ERR_R_MALLOC_FAILURE); 1823 return (NULL); 1824 } 1825 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1826 free(ret); 1827 SSLerrorx(ERR_R_MALLOC_FAILURE); 1828 return (NULL); 1829 } 1830 1831 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1832 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1833 goto err; 1834 } 1835 1836 ret->method = meth; 1837 ret->internal->min_tls_version = meth->min_tls_version; 1838 ret->internal->max_tls_version = meth->max_tls_version; 1839 ret->internal->min_proto_version = 0; 1840 ret->internal->max_proto_version = 0; 1841 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1842 1843 ret->cert_store = NULL; 1844 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1845 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1846 ret->internal->session_cache_head = NULL; 1847 ret->internal->session_cache_tail = NULL; 1848 1849 /* We take the system default */ 1850 ret->session_timeout = ssl_get_default_timeout(); 1851 1852 ret->internal->new_session_cb = 0; 1853 ret->internal->remove_session_cb = 0; 1854 ret->internal->get_session_cb = 0; 1855 ret->internal->generate_session_id = 0; 1856 1857 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1858 1859 ret->references = 1; 1860 ret->internal->quiet_shutdown = 0; 1861 1862 ret->internal->info_callback = NULL; 1863 1864 ret->internal->app_verify_callback = 0; 1865 ret->internal->app_verify_arg = NULL; 1866 1867 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1868 ret->internal->read_ahead = 0; 1869 ret->internal->msg_callback = 0; 1870 ret->internal->msg_callback_arg = NULL; 1871 ret->verify_mode = SSL_VERIFY_NONE; 1872 ret->sid_ctx_length = 0; 1873 ret->internal->default_verify_callback = NULL; 1874 1875 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1876 goto err; 1877 1878 ret->default_passwd_callback = 0; 1879 ret->default_passwd_callback_userdata = NULL; 1880 ret->internal->client_cert_cb = 0; 1881 ret->internal->app_gen_cookie_cb = 0; 1882 ret->internal->app_verify_cookie_cb = 0; 1883 1884 ret->internal->sessions = lh_SSL_SESSION_new(); 1885 if (ret->internal->sessions == NULL) 1886 goto err; 1887 ret->cert_store = X509_STORE_new(); 1888 if (ret->cert_store == NULL) 1889 goto err; 1890 1891 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1892 NULL, SSL_DEFAULT_CIPHER_LIST); 1893 if (ret->cipher_list == NULL || 1894 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1895 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1896 goto err2; 1897 } 1898 1899 ret->param = X509_VERIFY_PARAM_new(); 1900 if (!ret->param) 1901 goto err; 1902 1903 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1904 goto err; 1905 1906 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1907 1908 ret->extra_certs = NULL; 1909 1910 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1911 1912 ret->internal->tlsext_servername_callback = 0; 1913 ret->internal->tlsext_servername_arg = NULL; 1914 1915 /* Setup RFC4507 ticket keys */ 1916 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1917 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1918 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1919 1920 ret->internal->tlsext_status_cb = 0; 1921 ret->internal->tlsext_status_arg = NULL; 1922 1923 #ifndef OPENSSL_NO_ENGINE 1924 ret->internal->client_cert_engine = NULL; 1925 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1926 #define eng_strx(x) #x 1927 #define eng_str(x) eng_strx(x) 1928 /* Use specific client engine automatically... ignore errors */ 1929 { 1930 ENGINE *eng; 1931 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1932 if (!eng) { 1933 ERR_clear_error(); 1934 ENGINE_load_builtin_engines(); 1935 eng = ENGINE_by_id(eng_str( 1936 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1937 } 1938 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1939 ERR_clear_error(); 1940 } 1941 #endif 1942 #endif 1943 /* 1944 * Default is to connect to non-RI servers. When RI is more widely 1945 * deployed might change this. 1946 */ 1947 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1948 1949 return (ret); 1950 err: 1951 SSLerrorx(ERR_R_MALLOC_FAILURE); 1952 err2: 1953 SSL_CTX_free(ret); 1954 return (NULL); 1955 } 1956 1957 void 1958 SSL_CTX_free(SSL_CTX *ctx) 1959 { 1960 int i; 1961 1962 if (ctx == NULL) 1963 return; 1964 1965 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1966 if (i > 0) 1967 return; 1968 1969 X509_VERIFY_PARAM_free(ctx->param); 1970 1971 /* 1972 * Free internal session cache. However: the remove_cb() may reference 1973 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1974 * after the sessions were flushed. 1975 * As the ex_data handling routines might also touch the session cache, 1976 * the most secure solution seems to be: empty (flush) the cache, then 1977 * free ex_data, then finally free the cache. 1978 * (See ticket [openssl.org #212].) 1979 */ 1980 if (ctx->internal->sessions != NULL) 1981 SSL_CTX_flush_sessions(ctx, 0); 1982 1983 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1984 1985 lh_SSL_SESSION_free(ctx->internal->sessions); 1986 1987 X509_STORE_free(ctx->cert_store); 1988 sk_SSL_CIPHER_free(ctx->cipher_list); 1989 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 1990 ssl_cert_free(ctx->internal->cert); 1991 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1992 sk_X509_pop_free(ctx->extra_certs, X509_free); 1993 1994 #ifndef OPENSSL_NO_SRTP 1995 if (ctx->internal->srtp_profiles) 1996 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1997 #endif 1998 1999 #ifndef OPENSSL_NO_ENGINE 2000 ENGINE_finish(ctx->internal->client_cert_engine); 2001 #endif 2002 2003 free(ctx->internal->tlsext_ecpointformatlist); 2004 free(ctx->internal->tlsext_supportedgroups); 2005 2006 free(ctx->internal->alpn_client_proto_list); 2007 2008 free(ctx->internal); 2009 free(ctx); 2010 } 2011 2012 int 2013 SSL_CTX_up_ref(SSL_CTX *ctx) 2014 { 2015 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2016 return ((refs > 1) ? 1 : 0); 2017 } 2018 2019 pem_password_cb * 2020 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2021 { 2022 return (ctx->default_passwd_callback); 2023 } 2024 2025 void 2026 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2027 { 2028 ctx->default_passwd_callback = cb; 2029 } 2030 2031 void * 2032 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2033 { 2034 return ctx->default_passwd_callback_userdata; 2035 } 2036 2037 void 2038 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2039 { 2040 ctx->default_passwd_callback_userdata = u; 2041 } 2042 2043 void 2044 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2045 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2046 { 2047 ctx->internal->app_verify_callback = cb; 2048 ctx->internal->app_verify_arg = arg; 2049 } 2050 2051 void 2052 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2053 { 2054 ctx->verify_mode = mode; 2055 ctx->internal->default_verify_callback = cb; 2056 } 2057 2058 void 2059 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2060 { 2061 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2062 } 2063 2064 static int 2065 ssl_cert_can_sign(X509 *x) 2066 { 2067 /* This call populates extension flags (ex_flags). */ 2068 X509_check_purpose(x, -1, 0); 2069 2070 /* Key usage, if present, must allow signing. */ 2071 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2072 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2073 } 2074 2075 void 2076 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2077 { 2078 unsigned long mask_a, mask_k; 2079 CERT_PKEY *cpk; 2080 2081 if (c == NULL) 2082 return; 2083 2084 mask_a = SSL_aNULL | SSL_aTLS1_3; 2085 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2086 2087 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2088 mask_k |= SSL_kDHE; 2089 2090 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2091 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2092 if (ssl_cert_can_sign(cpk->x509)) 2093 mask_a |= SSL_aECDSA; 2094 } 2095 2096 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2097 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2098 mask_k |= SSL_kGOST; 2099 mask_a |= SSL_aGOST01; 2100 } 2101 2102 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2103 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2104 mask_a |= SSL_aRSA; 2105 mask_k |= SSL_kRSA; 2106 } 2107 2108 c->mask_k = mask_k; 2109 c->mask_a = mask_a; 2110 c->valid = 1; 2111 } 2112 2113 /* See if this handshake is using an ECC cipher suite. */ 2114 int 2115 ssl_using_ecc_cipher(SSL *s) 2116 { 2117 unsigned long alg_a, alg_k; 2118 2119 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2120 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2121 2122 return SSI(s)->tlsext_ecpointformatlist != NULL && 2123 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2124 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2125 } 2126 2127 int 2128 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2129 { 2130 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2131 unsigned long alg_a; 2132 2133 alg_a = cs->algorithm_auth; 2134 2135 if (alg_a & SSL_aECDSA) { 2136 /* This call populates extension flags (ex_flags). */ 2137 X509_check_purpose(x, -1, 0); 2138 2139 /* Key usage, if present, must allow signing. */ 2140 if ((x->ex_flags & EXFLAG_KUSAGE) && 2141 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2142 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2143 return (0); 2144 } 2145 } 2146 2147 return (1); 2148 } 2149 2150 CERT_PKEY * 2151 ssl_get_server_send_pkey(const SSL *s) 2152 { 2153 unsigned long alg_a; 2154 CERT *c; 2155 int i; 2156 2157 c = s->cert; 2158 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2159 2160 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2161 2162 if (alg_a & SSL_aECDSA) { 2163 i = SSL_PKEY_ECC; 2164 } else if (alg_a & SSL_aRSA) { 2165 i = SSL_PKEY_RSA; 2166 } else if (alg_a & SSL_aGOST01) { 2167 i = SSL_PKEY_GOST01; 2168 } else { /* if (alg_a & SSL_aNULL) */ 2169 SSLerror(s, ERR_R_INTERNAL_ERROR); 2170 return (NULL); 2171 } 2172 2173 return (c->pkeys + i); 2174 } 2175 2176 EVP_PKEY * 2177 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2178 const struct ssl_sigalg **sap) 2179 { 2180 const struct ssl_sigalg *sigalg = NULL; 2181 EVP_PKEY *pkey = NULL; 2182 unsigned long alg_a; 2183 CERT *c; 2184 int idx = -1; 2185 2186 alg_a = cipher->algorithm_auth; 2187 c = s->cert; 2188 2189 if (alg_a & SSL_aRSA) { 2190 idx = SSL_PKEY_RSA; 2191 } else if ((alg_a & SSL_aECDSA) && 2192 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2193 idx = SSL_PKEY_ECC; 2194 if (idx == -1) { 2195 SSLerror(s, ERR_R_INTERNAL_ERROR); 2196 return (NULL); 2197 } 2198 2199 pkey = c->pkeys[idx].privatekey; 2200 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2201 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2202 return (NULL); 2203 } 2204 *pmd = sigalg->md(); 2205 *sap = sigalg; 2206 2207 return (pkey); 2208 } 2209 2210 DH * 2211 ssl_get_auto_dh(SSL *s) 2212 { 2213 CERT_PKEY *cpk; 2214 int keylen; 2215 DH *dhp; 2216 2217 if (s->cert->dh_tmp_auto == 2) { 2218 keylen = 1024; 2219 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2220 keylen = 1024; 2221 if (S3I(s)->hs.cipher->strength_bits == 256) 2222 keylen = 3072; 2223 } else { 2224 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2225 return (NULL); 2226 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2227 return (NULL); 2228 keylen = EVP_PKEY_bits(cpk->privatekey); 2229 } 2230 2231 if ((dhp = DH_new()) == NULL) 2232 return (NULL); 2233 2234 dhp->g = BN_new(); 2235 if (dhp->g != NULL) 2236 BN_set_word(dhp->g, 2); 2237 2238 if (keylen >= 8192) 2239 dhp->p = get_rfc3526_prime_8192(NULL); 2240 else if (keylen >= 4096) 2241 dhp->p = get_rfc3526_prime_4096(NULL); 2242 else if (keylen >= 3072) 2243 dhp->p = get_rfc3526_prime_3072(NULL); 2244 else if (keylen >= 2048) 2245 dhp->p = get_rfc3526_prime_2048(NULL); 2246 else if (keylen >= 1536) 2247 dhp->p = get_rfc3526_prime_1536(NULL); 2248 else 2249 dhp->p = get_rfc2409_prime_1024(NULL); 2250 2251 if (dhp->p == NULL || dhp->g == NULL) { 2252 DH_free(dhp); 2253 return (NULL); 2254 } 2255 return (dhp); 2256 } 2257 2258 static int 2259 ssl_should_update_external_cache(SSL *s, int mode) 2260 { 2261 int cache_mode; 2262 2263 cache_mode = s->session_ctx->internal->session_cache_mode; 2264 2265 /* Don't cache if mode says not to */ 2266 if ((cache_mode & mode) == 0) 2267 return 0; 2268 2269 /* if it is not already cached, cache it */ 2270 if (!s->internal->hit) 2271 return 1; 2272 2273 /* If it's TLS 1.3, do it to match OpenSSL */ 2274 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2275 return 1; 2276 2277 return 0; 2278 } 2279 2280 static int 2281 ssl_should_update_internal_cache(SSL *s, int mode) 2282 { 2283 int cache_mode; 2284 2285 cache_mode = s->session_ctx->internal->session_cache_mode; 2286 2287 /* Don't cache if mode says not to */ 2288 if ((cache_mode & mode) == 0) 2289 return 0; 2290 2291 /* If it is already cached, don't cache it again */ 2292 if (s->internal->hit) 2293 return 0; 2294 2295 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2296 return 0; 2297 2298 /* If we are lesser than TLS 1.3, Cache it. */ 2299 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2300 return 1; 2301 2302 /* Below this we consider TLS 1.3 or later */ 2303 2304 /* If it's not a server, add it? OpenSSL does this. */ 2305 if (!s->server) 2306 return 1; 2307 2308 /* XXX if we support early data / PSK need to add */ 2309 2310 /* 2311 * If we have the remove session callback, we will want 2312 * to know about this even if it's a stateless ticket 2313 * from 1.3 so we can know when it is removed. 2314 */ 2315 if (s->session_ctx->internal->remove_session_cb != NULL) 2316 return 1; 2317 2318 /* If we have set OP_NO_TICKET, cache it. */ 2319 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2320 return 1; 2321 2322 /* Otherwise do not cache */ 2323 return 0; 2324 } 2325 2326 void 2327 ssl_update_cache(SSL *s, int mode) 2328 { 2329 int cache_mode, do_callback; 2330 2331 if (s->session->session_id_length == 0) 2332 return; 2333 2334 cache_mode = s->session_ctx->internal->session_cache_mode; 2335 do_callback = ssl_should_update_external_cache(s, mode); 2336 2337 if (ssl_should_update_internal_cache(s, mode)) { 2338 /* 2339 * XXX should we fail if the add to the internal cache 2340 * fails? OpenSSL doesn't care.. 2341 */ 2342 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2343 } 2344 2345 /* 2346 * Update the "external cache" by calling the new session 2347 * callback if present, even with TLS 1.3 without early data 2348 * "because some application just want to know about the 2349 * creation of a session and aren't doing a full cache". 2350 * Apparently, if they are doing a full cache, they'll have 2351 * some fun, but we endeavour to give application writers the 2352 * same glorious experience they expect from OpenSSL which 2353 * does it this way. 2354 */ 2355 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2356 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2357 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2358 SSL_SESSION_free(s->session); 2359 } 2360 2361 /* Auto flush every 255 connections. */ 2362 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2363 (cache_mode & mode) != 0) { 2364 int connections; 2365 if (mode & SSL_SESS_CACHE_CLIENT) 2366 connections = s->session_ctx->internal->stats.sess_connect_good; 2367 else 2368 connections = s->session_ctx->internal->stats.sess_accept_good; 2369 if ((connections & 0xff) == 0xff) 2370 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2371 } 2372 } 2373 2374 const SSL_METHOD * 2375 SSL_get_ssl_method(SSL *s) 2376 { 2377 return (s->method); 2378 } 2379 2380 int 2381 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2382 { 2383 int (*handshake_func)(SSL *) = NULL; 2384 int ret = 1; 2385 2386 if (s->method == method) 2387 return (ret); 2388 2389 if (s->internal->handshake_func == s->method->ssl_connect) 2390 handshake_func = method->ssl_connect; 2391 else if (s->internal->handshake_func == s->method->ssl_accept) 2392 handshake_func = method->ssl_accept; 2393 2394 if (s->method->version == method->version) { 2395 s->method = method; 2396 } else { 2397 s->method->ssl_free(s); 2398 s->method = method; 2399 ret = s->method->ssl_new(s); 2400 } 2401 s->internal->handshake_func = handshake_func; 2402 2403 return (ret); 2404 } 2405 2406 int 2407 SSL_get_error(const SSL *s, int i) 2408 { 2409 int reason; 2410 unsigned long l; 2411 BIO *bio; 2412 2413 if (i > 0) 2414 return (SSL_ERROR_NONE); 2415 2416 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2417 * etc, where we do encode the error */ 2418 if ((l = ERR_peek_error()) != 0) { 2419 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2420 return (SSL_ERROR_SYSCALL); 2421 else 2422 return (SSL_ERROR_SSL); 2423 } 2424 2425 if ((i < 0) && SSL_want_read(s)) { 2426 bio = SSL_get_rbio(s); 2427 if (BIO_should_read(bio)) { 2428 return (SSL_ERROR_WANT_READ); 2429 } else if (BIO_should_write(bio)) { 2430 /* 2431 * This one doesn't make too much sense... We never 2432 * try to write to the rbio, and an application 2433 * program where rbio and wbio are separate couldn't 2434 * even know what it should wait for. However if we 2435 * ever set s->internal->rwstate incorrectly (so that we have 2436 * SSL_want_read(s) instead of SSL_want_write(s)) 2437 * and rbio and wbio *are* the same, this test works 2438 * around that bug; so it might be safer to keep it. 2439 */ 2440 return (SSL_ERROR_WANT_WRITE); 2441 } else if (BIO_should_io_special(bio)) { 2442 reason = BIO_get_retry_reason(bio); 2443 if (reason == BIO_RR_CONNECT) 2444 return (SSL_ERROR_WANT_CONNECT); 2445 else if (reason == BIO_RR_ACCEPT) 2446 return (SSL_ERROR_WANT_ACCEPT); 2447 else 2448 return (SSL_ERROR_SYSCALL); /* unknown */ 2449 } 2450 } 2451 2452 if ((i < 0) && SSL_want_write(s)) { 2453 bio = SSL_get_wbio(s); 2454 if (BIO_should_write(bio)) { 2455 return (SSL_ERROR_WANT_WRITE); 2456 } else if (BIO_should_read(bio)) { 2457 /* 2458 * See above (SSL_want_read(s) with 2459 * BIO_should_write(bio)) 2460 */ 2461 return (SSL_ERROR_WANT_READ); 2462 } else if (BIO_should_io_special(bio)) { 2463 reason = BIO_get_retry_reason(bio); 2464 if (reason == BIO_RR_CONNECT) 2465 return (SSL_ERROR_WANT_CONNECT); 2466 else if (reason == BIO_RR_ACCEPT) 2467 return (SSL_ERROR_WANT_ACCEPT); 2468 else 2469 return (SSL_ERROR_SYSCALL); 2470 } 2471 } 2472 if ((i < 0) && SSL_want_x509_lookup(s)) { 2473 return (SSL_ERROR_WANT_X509_LOOKUP); 2474 } 2475 2476 if (i == 0) { 2477 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2478 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2479 return (SSL_ERROR_ZERO_RETURN); 2480 } 2481 return (SSL_ERROR_SYSCALL); 2482 } 2483 2484 int 2485 SSL_do_handshake(SSL *s) 2486 { 2487 int ret = 1; 2488 2489 if (s->internal->handshake_func == NULL) { 2490 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2491 return (-1); 2492 } 2493 2494 s->method->ssl_renegotiate_check(s); 2495 2496 if (SSL_in_init(s) || SSL_in_before(s)) { 2497 ret = s->internal->handshake_func(s); 2498 } 2499 return (ret); 2500 } 2501 2502 /* 2503 * For the next 2 functions, SSL_clear() sets shutdown and so 2504 * one of these calls will reset it 2505 */ 2506 void 2507 SSL_set_accept_state(SSL *s) 2508 { 2509 s->server = 1; 2510 s->internal->shutdown = 0; 2511 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2512 s->internal->handshake_func = s->method->ssl_accept; 2513 ssl_clear_cipher_state(s); 2514 } 2515 2516 void 2517 SSL_set_connect_state(SSL *s) 2518 { 2519 s->server = 0; 2520 s->internal->shutdown = 0; 2521 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2522 s->internal->handshake_func = s->method->ssl_connect; 2523 ssl_clear_cipher_state(s); 2524 } 2525 2526 int 2527 ssl_undefined_function(SSL *s) 2528 { 2529 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2530 return (0); 2531 } 2532 2533 int 2534 ssl_undefined_void_function(void) 2535 { 2536 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2537 return (0); 2538 } 2539 2540 int 2541 ssl_undefined_const_function(const SSL *s) 2542 { 2543 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2544 return (0); 2545 } 2546 2547 const char * 2548 ssl_version_string(int ver) 2549 { 2550 switch (ver) { 2551 case TLS1_VERSION: 2552 return (SSL_TXT_TLSV1); 2553 case TLS1_1_VERSION: 2554 return (SSL_TXT_TLSV1_1); 2555 case TLS1_2_VERSION: 2556 return (SSL_TXT_TLSV1_2); 2557 case TLS1_3_VERSION: 2558 return (SSL_TXT_TLSV1_3); 2559 case DTLS1_VERSION: 2560 return (SSL_TXT_DTLS1); 2561 case DTLS1_2_VERSION: 2562 return (SSL_TXT_DTLS1_2); 2563 default: 2564 return ("unknown"); 2565 } 2566 } 2567 2568 const char * 2569 SSL_get_version(const SSL *s) 2570 { 2571 return ssl_version_string(s->version); 2572 } 2573 2574 SSL * 2575 SSL_dup(SSL *s) 2576 { 2577 STACK_OF(X509_NAME) *sk; 2578 X509_NAME *xn; 2579 SSL *ret; 2580 int i; 2581 2582 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2583 goto err; 2584 2585 ret->version = s->version; 2586 ret->method = s->method; 2587 2588 if (s->session != NULL) { 2589 if (!SSL_copy_session_id(ret, s)) 2590 goto err; 2591 } else { 2592 /* 2593 * No session has been established yet, so we have to expect 2594 * that s->cert or ret->cert will be changed later -- 2595 * they should not both point to the same object, 2596 * and thus we can't use SSL_copy_session_id. 2597 */ 2598 2599 ret->method->ssl_free(ret); 2600 ret->method = s->method; 2601 ret->method->ssl_new(ret); 2602 2603 ssl_cert_free(ret->cert); 2604 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2605 goto err; 2606 2607 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2608 s->sid_ctx_length)) 2609 goto err; 2610 } 2611 2612 ret->internal->options = s->internal->options; 2613 ret->internal->mode = s->internal->mode; 2614 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2615 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2616 ret->internal->msg_callback = s->internal->msg_callback; 2617 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2618 SSL_set_verify(ret, SSL_get_verify_mode(s), 2619 SSL_get_verify_callback(s)); 2620 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2621 ret->internal->generate_session_id = s->internal->generate_session_id; 2622 2623 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2624 2625 ret->internal->debug = s->internal->debug; 2626 2627 /* copy app data, a little dangerous perhaps */ 2628 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2629 &ret->internal->ex_data, &s->internal->ex_data)) 2630 goto err; 2631 2632 /* setup rbio, and wbio */ 2633 if (s->rbio != NULL) { 2634 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2635 goto err; 2636 } 2637 if (s->wbio != NULL) { 2638 if (s->wbio != s->rbio) { 2639 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2640 goto err; 2641 } else 2642 ret->wbio = ret->rbio; 2643 } 2644 ret->internal->rwstate = s->internal->rwstate; 2645 ret->internal->in_handshake = s->internal->in_handshake; 2646 ret->internal->handshake_func = s->internal->handshake_func; 2647 ret->server = s->server; 2648 ret->internal->renegotiate = s->internal->renegotiate; 2649 ret->internal->new_session = s->internal->new_session; 2650 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2651 ret->internal->shutdown = s->internal->shutdown; 2652 /* SSL_dup does not really work at any state, though */ 2653 S3I(ret)->hs.state = S3I(s)->hs.state; 2654 ret->internal->rstate = s->internal->rstate; 2655 2656 /* 2657 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2658 * ret->init_off 2659 */ 2660 ret->internal->init_num = 0; 2661 2662 ret->internal->hit = s->internal->hit; 2663 2664 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2665 2666 if (s->cipher_list != NULL) { 2667 if ((ret->cipher_list = 2668 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2669 goto err; 2670 } 2671 if (s->internal->cipher_list_tls13 != NULL) { 2672 if ((ret->internal->cipher_list_tls13 = 2673 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2674 goto err; 2675 } 2676 2677 /* Dup the client_CA list */ 2678 if (s->internal->client_CA != NULL) { 2679 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2680 ret->internal->client_CA = sk; 2681 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2682 xn = sk_X509_NAME_value(sk, i); 2683 if (sk_X509_NAME_set(sk, i, 2684 X509_NAME_dup(xn)) == NULL) { 2685 X509_NAME_free(xn); 2686 goto err; 2687 } 2688 } 2689 } 2690 2691 return ret; 2692 err: 2693 SSL_free(ret); 2694 return NULL; 2695 } 2696 2697 void 2698 ssl_clear_cipher_state(SSL *s) 2699 { 2700 ssl_clear_cipher_read_state(s); 2701 ssl_clear_cipher_write_state(s); 2702 } 2703 2704 void 2705 ssl_clear_cipher_read_state(SSL *s) 2706 { 2707 tls12_record_layer_clear_read_state(s->internal->rl); 2708 tls12_record_layer_read_cipher_hash(s->internal->rl, 2709 &s->enc_read_ctx, &s->read_hash); 2710 } 2711 2712 void 2713 ssl_clear_cipher_write_state(SSL *s) 2714 { 2715 tls12_record_layer_clear_write_state(s->internal->rl); 2716 } 2717 2718 void 2719 ssl_info_callback(const SSL *s, int type, int value) 2720 { 2721 ssl_info_callback_fn *cb; 2722 2723 if ((cb = s->internal->info_callback) == NULL) 2724 cb = s->ctx->internal->info_callback; 2725 if (cb != NULL) 2726 cb(s, type, value); 2727 } 2728 2729 void 2730 ssl_msg_callback(SSL *s, int is_write, int content_type, 2731 const void *msg_buf, size_t msg_len) 2732 { 2733 if (s->internal->msg_callback != NULL) 2734 s->internal->msg_callback(is_write, s->version, content_type, 2735 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2736 } 2737 2738 /* Fix this function so that it takes an optional type parameter */ 2739 X509 * 2740 SSL_get_certificate(const SSL *s) 2741 { 2742 return (s->cert->key->x509); 2743 } 2744 2745 /* Fix this function so that it takes an optional type parameter */ 2746 EVP_PKEY * 2747 SSL_get_privatekey(const SSL *s) 2748 { 2749 return (s->cert->key->privatekey); 2750 } 2751 2752 const SSL_CIPHER * 2753 SSL_get_current_cipher(const SSL *s) 2754 { 2755 if ((s->session != NULL) && (s->session->cipher != NULL)) 2756 return (s->session->cipher); 2757 return (NULL); 2758 } 2759 const void * 2760 SSL_get_current_compression(SSL *s) 2761 { 2762 return (NULL); 2763 } 2764 2765 const void * 2766 SSL_get_current_expansion(SSL *s) 2767 { 2768 return (NULL); 2769 } 2770 2771 size_t 2772 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2773 { 2774 size_t len = sizeof(s->s3->client_random); 2775 2776 if (out == NULL) 2777 return len; 2778 2779 if (len > max_out) 2780 len = max_out; 2781 2782 memcpy(out, s->s3->client_random, len); 2783 2784 return len; 2785 } 2786 2787 size_t 2788 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2789 { 2790 size_t len = sizeof(s->s3->server_random); 2791 2792 if (out == NULL) 2793 return len; 2794 2795 if (len > max_out) 2796 len = max_out; 2797 2798 memcpy(out, s->s3->server_random, len); 2799 2800 return len; 2801 } 2802 2803 int 2804 ssl_init_wbio_buffer(SSL *s, int push) 2805 { 2806 BIO *bbio; 2807 2808 if (s->bbio == NULL) { 2809 bbio = BIO_new(BIO_f_buffer()); 2810 if (bbio == NULL) 2811 return (0); 2812 s->bbio = bbio; 2813 } else { 2814 bbio = s->bbio; 2815 if (s->bbio == s->wbio) 2816 s->wbio = BIO_pop(s->wbio); 2817 } 2818 (void)BIO_reset(bbio); 2819 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2820 if (!BIO_set_read_buffer_size(bbio, 1)) { 2821 SSLerror(s, ERR_R_BUF_LIB); 2822 return (0); 2823 } 2824 if (push) { 2825 if (s->wbio != bbio) 2826 s->wbio = BIO_push(bbio, s->wbio); 2827 } else { 2828 if (s->wbio == bbio) 2829 s->wbio = BIO_pop(bbio); 2830 } 2831 return (1); 2832 } 2833 2834 void 2835 ssl_free_wbio_buffer(SSL *s) 2836 { 2837 if (s == NULL) 2838 return; 2839 2840 if (s->bbio == NULL) 2841 return; 2842 2843 if (s->bbio == s->wbio) { 2844 /* remove buffering */ 2845 s->wbio = BIO_pop(s->wbio); 2846 } 2847 BIO_free(s->bbio); 2848 s->bbio = NULL; 2849 } 2850 2851 void 2852 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2853 { 2854 ctx->internal->quiet_shutdown = mode; 2855 } 2856 2857 int 2858 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2859 { 2860 return (ctx->internal->quiet_shutdown); 2861 } 2862 2863 void 2864 SSL_set_quiet_shutdown(SSL *s, int mode) 2865 { 2866 s->internal->quiet_shutdown = mode; 2867 } 2868 2869 int 2870 SSL_get_quiet_shutdown(const SSL *s) 2871 { 2872 return (s->internal->quiet_shutdown); 2873 } 2874 2875 void 2876 SSL_set_shutdown(SSL *s, int mode) 2877 { 2878 s->internal->shutdown = mode; 2879 } 2880 2881 int 2882 SSL_get_shutdown(const SSL *s) 2883 { 2884 return (s->internal->shutdown); 2885 } 2886 2887 int 2888 SSL_version(const SSL *s) 2889 { 2890 return (s->version); 2891 } 2892 2893 SSL_CTX * 2894 SSL_get_SSL_CTX(const SSL *ssl) 2895 { 2896 return (ssl->ctx); 2897 } 2898 2899 SSL_CTX * 2900 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2901 { 2902 CERT *new_cert; 2903 2904 if (ctx == NULL) 2905 ctx = ssl->initial_ctx; 2906 if (ssl->ctx == ctx) 2907 return (ssl->ctx); 2908 2909 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2910 return NULL; 2911 ssl_cert_free(ssl->cert); 2912 ssl->cert = new_cert; 2913 2914 SSL_CTX_up_ref(ctx); 2915 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2916 ssl->ctx = ctx; 2917 2918 return (ssl->ctx); 2919 } 2920 2921 int 2922 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2923 { 2924 return (X509_STORE_set_default_paths(ctx->cert_store)); 2925 } 2926 2927 int 2928 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2929 const char *CApath) 2930 { 2931 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2932 } 2933 2934 int 2935 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2936 { 2937 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2938 } 2939 2940 void 2941 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2942 { 2943 ssl->internal->info_callback = cb; 2944 } 2945 2946 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2947 { 2948 return (ssl->internal->info_callback); 2949 } 2950 2951 int 2952 SSL_state(const SSL *ssl) 2953 { 2954 return (S3I(ssl)->hs.state); 2955 } 2956 2957 void 2958 SSL_set_state(SSL *ssl, int state) 2959 { 2960 S3I(ssl)->hs.state = state; 2961 } 2962 2963 void 2964 SSL_set_verify_result(SSL *ssl, long arg) 2965 { 2966 ssl->verify_result = arg; 2967 } 2968 2969 long 2970 SSL_get_verify_result(const SSL *ssl) 2971 { 2972 return (ssl->verify_result); 2973 } 2974 2975 int 2976 SSL_verify_client_post_handshake(SSL *ssl) 2977 { 2978 return 0; 2979 } 2980 2981 void 2982 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 2983 { 2984 return; 2985 } 2986 2987 void 2988 SSL_set_post_handshake_auth(SSL *ssl, int val) 2989 { 2990 return; 2991 } 2992 2993 int 2994 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2995 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2996 { 2997 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2998 new_func, dup_func, free_func)); 2999 } 3000 3001 int 3002 SSL_set_ex_data(SSL *s, int idx, void *arg) 3003 { 3004 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3005 } 3006 3007 void * 3008 SSL_get_ex_data(const SSL *s, int idx) 3009 { 3010 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3011 } 3012 3013 int 3014 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3015 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3016 { 3017 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3018 new_func, dup_func, free_func)); 3019 } 3020 3021 int 3022 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3023 { 3024 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3025 } 3026 3027 void * 3028 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3029 { 3030 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3031 } 3032 3033 int 3034 ssl_ok(SSL *s) 3035 { 3036 return (1); 3037 } 3038 3039 X509_STORE * 3040 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3041 { 3042 return (ctx->cert_store); 3043 } 3044 3045 void 3046 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3047 { 3048 X509_STORE_free(ctx->cert_store); 3049 ctx->cert_store = store; 3050 } 3051 3052 X509 * 3053 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3054 { 3055 if (ctx->internal->cert == NULL) 3056 return NULL; 3057 3058 return ctx->internal->cert->key->x509; 3059 } 3060 3061 int 3062 SSL_want(const SSL *s) 3063 { 3064 return (s->internal->rwstate); 3065 } 3066 3067 void 3068 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3069 int keylength)) 3070 { 3071 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3072 } 3073 3074 void 3075 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3076 int keylength)) 3077 { 3078 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3079 } 3080 3081 void 3082 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3083 int keylength)) 3084 { 3085 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3086 } 3087 3088 void 3089 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3090 int keylength)) 3091 { 3092 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3093 } 3094 3095 void 3096 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3097 int is_export, int keylength)) 3098 { 3099 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3100 (void (*)(void))ecdh); 3101 } 3102 3103 void 3104 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3105 int keylength)) 3106 { 3107 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3108 } 3109 3110 3111 void 3112 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3113 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3114 { 3115 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3116 (void (*)(void))cb); 3117 } 3118 3119 void 3120 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3121 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3122 { 3123 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3124 } 3125 3126 void 3127 SSL_set_debug(SSL *s, int debug) 3128 { 3129 s->internal->debug = debug; 3130 } 3131 3132 int 3133 SSL_cache_hit(SSL *s) 3134 { 3135 return (s->internal->hit); 3136 } 3137 3138 int 3139 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3140 { 3141 return ctx->internal->min_proto_version; 3142 } 3143 3144 int 3145 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3146 { 3147 return ssl_version_set_min(ctx->method, version, 3148 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3149 &ctx->internal->min_proto_version); 3150 } 3151 3152 int 3153 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3154 { 3155 return ctx->internal->max_proto_version; 3156 } 3157 3158 int 3159 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3160 { 3161 return ssl_version_set_max(ctx->method, version, 3162 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3163 &ctx->internal->max_proto_version); 3164 } 3165 3166 int 3167 SSL_get_min_proto_version(SSL *ssl) 3168 { 3169 return ssl->internal->min_proto_version; 3170 } 3171 3172 int 3173 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3174 { 3175 return ssl_version_set_min(ssl->method, version, 3176 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3177 &ssl->internal->min_proto_version); 3178 } 3179 int 3180 SSL_get_max_proto_version(SSL *ssl) 3181 { 3182 return ssl->internal->max_proto_version; 3183 } 3184 3185 int 3186 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3187 { 3188 return ssl_version_set_max(ssl->method, version, 3189 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3190 &ssl->internal->max_proto_version); 3191 } 3192 3193 const SSL_METHOD * 3194 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3195 { 3196 return ctx->method; 3197 } 3198 3199 static int 3200 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3201 { 3202 SSL_CIPHER const *a = a_; 3203 SSL_CIPHER const *b = b_; 3204 return ssl_cipher_id_cmp(a, b); 3205 } 3206 3207 SSL_CIPHER * 3208 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3209 { 3210 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3211 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3212 } 3213