1 /* $OpenBSD: ssl_lib.c,v 1.308 2022/11/26 16:08:55 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 <limits.h> 148 #include <stdio.h> 149 150 #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_local.h" 163 #include "ssl_local.h" 164 #include "ssl_sigalgs.h" 165 #include "ssl_tlsext.h" 166 #include "tls12_internal.h" 167 168 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 169 170 int 171 SSL_clear(SSL *s) 172 { 173 if (s->method == NULL) { 174 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 175 return (0); 176 } 177 178 if (ssl_clear_bad_session(s)) { 179 SSL_SESSION_free(s->session); 180 s->session = NULL; 181 } 182 183 s->error = 0; 184 s->hit = 0; 185 s->shutdown = 0; 186 187 if (s->renegotiate) { 188 SSLerror(s, ERR_R_INTERNAL_ERROR); 189 return (0); 190 } 191 192 s->version = s->method->version; 193 s->client_version = s->version; 194 s->rwstate = SSL_NOTHING; 195 s->rstate = SSL_ST_READ_HEADER; 196 197 tls13_ctx_free(s->tls13); 198 s->tls13 = NULL; 199 200 ssl3_release_init_buffer(s); 201 202 ssl_clear_cipher_state(s); 203 204 s->first_packet = 0; 205 206 /* 207 * Check to see if we were changed into a different method, if 208 * so, revert back if we are not doing session-id reuse. 209 */ 210 if (!s->in_handshake && (s->session == NULL) && 211 (s->method != s->ctx->method)) { 212 s->method->ssl_free(s); 213 s->method = s->ctx->method; 214 if (!s->method->ssl_new(s)) 215 return (0); 216 } else 217 s->method->ssl_clear(s); 218 219 return (1); 220 } 221 222 /* Used to change an SSL_CTXs default SSL method type */ 223 int 224 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 225 { 226 STACK_OF(SSL_CIPHER) *ciphers; 227 228 ctx->method = meth; 229 230 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 231 ctx->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST, 232 ctx->cert); 233 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 234 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 235 return (0); 236 } 237 return (1); 238 } 239 240 SSL * 241 SSL_new(SSL_CTX *ctx) 242 { 243 SSL *s; 244 CBS cbs; 245 246 if (ctx == NULL) { 247 SSLerrorx(SSL_R_NULL_SSL_CTX); 248 return (NULL); 249 } 250 if (ctx->method == NULL) { 251 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 252 return (NULL); 253 } 254 255 if ((s = calloc(1, sizeof(*s))) == NULL) 256 goto err; 257 258 if ((s->rl = tls12_record_layer_new()) == NULL) 259 goto err; 260 261 s->min_tls_version = ctx->min_tls_version; 262 s->max_tls_version = ctx->max_tls_version; 263 s->min_proto_version = ctx->min_proto_version; 264 s->max_proto_version = ctx->max_proto_version; 265 266 s->options = ctx->options; 267 s->mode = ctx->mode; 268 s->max_cert_list = ctx->max_cert_list; 269 s->num_tickets = ctx->num_tickets; 270 271 if ((s->cert = ssl_cert_dup(ctx->cert)) == NULL) 272 goto err; 273 274 s->read_ahead = ctx->read_ahead; 275 s->msg_callback = ctx->msg_callback; 276 s->msg_callback_arg = ctx->msg_callback_arg; 277 s->verify_mode = ctx->verify_mode; 278 s->sid_ctx_length = ctx->sid_ctx_length; 279 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 280 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 281 s->verify_callback = ctx->default_verify_callback; 282 s->generate_session_id = ctx->generate_session_id; 283 284 s->param = X509_VERIFY_PARAM_new(); 285 if (!s->param) 286 goto err; 287 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 288 s->quiet_shutdown = ctx->quiet_shutdown; 289 s->max_send_fragment = ctx->max_send_fragment; 290 291 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 292 s->ctx = ctx; 293 s->tlsext_debug_cb = 0; 294 s->tlsext_debug_arg = NULL; 295 s->tlsext_ticket_expected = 0; 296 s->tlsext_status_type = -1; 297 s->tlsext_status_expected = 0; 298 s->tlsext_ocsp_ids = NULL; 299 s->tlsext_ocsp_exts = NULL; 300 s->tlsext_ocsp_resp = NULL; 301 s->tlsext_ocsp_resp_len = 0; 302 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 303 s->initial_ctx = ctx; 304 305 if (ctx->tlsext_ecpointformatlist != NULL) { 306 s->tlsext_ecpointformatlist = 307 calloc(ctx->tlsext_ecpointformatlist_length, 308 sizeof(ctx->tlsext_ecpointformatlist[0])); 309 if (s->tlsext_ecpointformatlist == NULL) 310 goto err; 311 memcpy(s->tlsext_ecpointformatlist, 312 ctx->tlsext_ecpointformatlist, 313 ctx->tlsext_ecpointformatlist_length * 314 sizeof(ctx->tlsext_ecpointformatlist[0])); 315 s->tlsext_ecpointformatlist_length = 316 ctx->tlsext_ecpointformatlist_length; 317 } 318 if (ctx->tlsext_supportedgroups != NULL) { 319 s->tlsext_supportedgroups = 320 calloc(ctx->tlsext_supportedgroups_length, 321 sizeof(ctx->tlsext_supportedgroups[0])); 322 if (s->tlsext_supportedgroups == NULL) 323 goto err; 324 memcpy(s->tlsext_supportedgroups, 325 ctx->tlsext_supportedgroups, 326 ctx->tlsext_supportedgroups_length * 327 sizeof(ctx->tlsext_supportedgroups[0])); 328 s->tlsext_supportedgroups_length = 329 ctx->tlsext_supportedgroups_length; 330 } 331 332 CBS_init(&cbs, ctx->alpn_client_proto_list, 333 ctx->alpn_client_proto_list_len); 334 if (!CBS_stow(&cbs, &s->alpn_client_proto_list, 335 &s->alpn_client_proto_list_len)) 336 goto err; 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 s->quic_method = ctx->quic_method; 342 343 if (!s->method->ssl_new(s)) 344 goto err; 345 346 s->references = 1; 347 s->server = ctx->method->server; 348 349 SSL_clear(s); 350 351 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 352 353 return (s); 354 355 err: 356 SSL_free(s); 357 SSLerrorx(ERR_R_MALLOC_FAILURE); 358 return (NULL); 359 } 360 361 int 362 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 363 unsigned int sid_ctx_len) 364 { 365 if (sid_ctx_len > sizeof ctx->sid_ctx) { 366 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 367 return (0); 368 } 369 ctx->sid_ctx_length = sid_ctx_len; 370 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 371 372 return (1); 373 } 374 375 int 376 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 377 unsigned int sid_ctx_len) 378 { 379 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 380 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 381 return (0); 382 } 383 ssl->sid_ctx_length = sid_ctx_len; 384 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 385 386 return (1); 387 } 388 389 int 390 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 391 { 392 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 393 ctx->generate_session_id = cb; 394 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 395 return (1); 396 } 397 398 int 399 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 400 { 401 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 402 ssl->generate_session_id = cb; 403 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 404 return (1); 405 } 406 407 int 408 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 409 unsigned int id_len) 410 { 411 /* 412 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 413 * shows how we can "construct" a session to give us the desired 414 * check - ie. to find if there's a session in the hash table 415 * that would conflict with any new session built out of this 416 * id/id_len and the ssl_version in use by this SSL. 417 */ 418 SSL_SESSION r, *p; 419 420 if (id_len > sizeof r.session_id) 421 return (0); 422 423 r.ssl_version = ssl->version; 424 r.session_id_length = id_len; 425 memcpy(r.session_id, id, id_len); 426 427 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 428 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 429 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 430 return (p != NULL); 431 } 432 433 int 434 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 435 { 436 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 437 } 438 439 int 440 SSL_set_purpose(SSL *s, int purpose) 441 { 442 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 443 } 444 445 int 446 SSL_CTX_set_trust(SSL_CTX *s, int trust) 447 { 448 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 449 } 450 451 int 452 SSL_set_trust(SSL *s, int trust) 453 { 454 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 455 } 456 457 int 458 SSL_set1_host(SSL *s, const char *hostname) 459 { 460 struct in_addr ina; 461 struct in6_addr in6a; 462 463 if (hostname != NULL && *hostname != '\0' && 464 (inet_pton(AF_INET, hostname, &ina) == 1 || 465 inet_pton(AF_INET6, hostname, &in6a) == 1)) 466 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 467 else 468 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 469 } 470 471 void 472 SSL_set_hostflags(SSL *s, unsigned int flags) 473 { 474 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 475 } 476 477 const char * 478 SSL_get0_peername(SSL *s) 479 { 480 return X509_VERIFY_PARAM_get0_peername(s->param); 481 } 482 483 X509_VERIFY_PARAM * 484 SSL_CTX_get0_param(SSL_CTX *ctx) 485 { 486 return (ctx->param); 487 } 488 489 int 490 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 491 { 492 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 493 } 494 495 X509_VERIFY_PARAM * 496 SSL_get0_param(SSL *ssl) 497 { 498 return (ssl->param); 499 } 500 501 int 502 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 503 { 504 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 505 } 506 507 void 508 SSL_free(SSL *s) 509 { 510 int i; 511 512 if (s == NULL) 513 return; 514 515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 516 if (i > 0) 517 return; 518 519 X509_VERIFY_PARAM_free(s->param); 520 521 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 522 523 if (s->bbio != NULL) { 524 /* If the buffering BIO is in place, pop it off */ 525 if (s->bbio == s->wbio) { 526 s->wbio = BIO_pop(s->wbio); 527 } 528 BIO_free(s->bbio); 529 s->bbio = NULL; 530 } 531 532 if (s->rbio != s->wbio) 533 BIO_free_all(s->rbio); 534 BIO_free_all(s->wbio); 535 536 tls13_ctx_free(s->tls13); 537 538 ssl3_release_init_buffer(s); 539 540 sk_SSL_CIPHER_free(s->cipher_list); 541 sk_SSL_CIPHER_free(s->cipher_list_tls13); 542 543 /* Make the next call work :-) */ 544 if (s->session != NULL) { 545 ssl_clear_bad_session(s); 546 SSL_SESSION_free(s->session); 547 } 548 549 ssl_clear_cipher_state(s); 550 551 ssl_cert_free(s->cert); 552 553 free(s->tlsext_hostname); 554 SSL_CTX_free(s->initial_ctx); 555 556 free(s->tlsext_ecpointformatlist); 557 free(s->tlsext_supportedgroups); 558 559 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 560 X509_EXTENSION_free); 561 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 562 free(s->tlsext_ocsp_resp); 563 564 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 565 566 if (s->method != NULL) 567 s->method->ssl_free(s); 568 569 SSL_CTX_free(s->ctx); 570 571 free(s->alpn_client_proto_list); 572 573 free(s->quic_transport_params); 574 575 #ifndef OPENSSL_NO_SRTP 576 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 577 #endif 578 579 tls12_record_layer_free(s->rl); 580 581 free(s); 582 } 583 584 int 585 SSL_up_ref(SSL *s) 586 { 587 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 588 return (refs > 1) ? 1 : 0; 589 } 590 591 void 592 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 593 { 594 /* If the output buffering BIO is still in place, remove it */ 595 if (s->bbio != NULL) { 596 if (s->wbio == s->bbio) { 597 s->wbio = BIO_next(s->wbio); 598 BIO_set_next(s->bbio, NULL); 599 } 600 } 601 602 if (s->rbio != rbio && s->rbio != s->wbio) 603 BIO_free_all(s->rbio); 604 if (s->wbio != wbio) 605 BIO_free_all(s->wbio); 606 s->rbio = rbio; 607 s->wbio = wbio; 608 } 609 610 BIO * 611 SSL_get_rbio(const SSL *s) 612 { 613 return (s->rbio); 614 } 615 616 void 617 SSL_set0_rbio(SSL *s, BIO *rbio) 618 { 619 BIO_free_all(s->rbio); 620 s->rbio = rbio; 621 } 622 623 BIO * 624 SSL_get_wbio(const SSL *s) 625 { 626 return (s->wbio); 627 } 628 629 int 630 SSL_get_fd(const SSL *s) 631 { 632 return (SSL_get_rfd(s)); 633 } 634 635 int 636 SSL_get_rfd(const SSL *s) 637 { 638 int ret = -1; 639 BIO *b, *r; 640 641 b = SSL_get_rbio(s); 642 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 643 if (r != NULL) 644 BIO_get_fd(r, &ret); 645 return (ret); 646 } 647 648 int 649 SSL_get_wfd(const SSL *s) 650 { 651 int ret = -1; 652 BIO *b, *r; 653 654 b = SSL_get_wbio(s); 655 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 656 if (r != NULL) 657 BIO_get_fd(r, &ret); 658 return (ret); 659 } 660 661 int 662 SSL_set_fd(SSL *s, int fd) 663 { 664 int ret = 0; 665 BIO *bio = NULL; 666 667 bio = BIO_new(BIO_s_socket()); 668 669 if (bio == NULL) { 670 SSLerror(s, ERR_R_BUF_LIB); 671 goto err; 672 } 673 BIO_set_fd(bio, fd, BIO_NOCLOSE); 674 SSL_set_bio(s, bio, bio); 675 ret = 1; 676 err: 677 return (ret); 678 } 679 680 int 681 SSL_set_wfd(SSL *s, int fd) 682 { 683 int ret = 0; 684 BIO *bio = NULL; 685 686 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 687 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 688 bio = BIO_new(BIO_s_socket()); 689 690 if (bio == NULL) { 691 SSLerror(s, ERR_R_BUF_LIB); 692 goto err; 693 } 694 BIO_set_fd(bio, fd, BIO_NOCLOSE); 695 SSL_set_bio(s, SSL_get_rbio(s), bio); 696 } else 697 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 698 ret = 1; 699 err: 700 return (ret); 701 } 702 703 int 704 SSL_set_rfd(SSL *s, int fd) 705 { 706 int ret = 0; 707 BIO *bio = NULL; 708 709 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 710 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 711 bio = BIO_new(BIO_s_socket()); 712 713 if (bio == NULL) { 714 SSLerror(s, ERR_R_BUF_LIB); 715 goto err; 716 } 717 BIO_set_fd(bio, fd, BIO_NOCLOSE); 718 SSL_set_bio(s, bio, SSL_get_wbio(s)); 719 } else 720 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 721 ret = 1; 722 err: 723 return (ret); 724 } 725 726 727 /* return length of latest Finished message we sent, copy to 'buf' */ 728 size_t 729 SSL_get_finished(const SSL *s, void *buf, size_t count) 730 { 731 size_t ret; 732 733 ret = s->s3->hs.finished_len; 734 if (count > ret) 735 count = ret; 736 memcpy(buf, s->s3->hs.finished, count); 737 return (ret); 738 } 739 740 /* return length of latest Finished message we expected, copy to 'buf' */ 741 size_t 742 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 743 { 744 size_t ret; 745 746 ret = s->s3->hs.peer_finished_len; 747 if (count > ret) 748 count = ret; 749 memcpy(buf, s->s3->hs.peer_finished, count); 750 return (ret); 751 } 752 753 754 int 755 SSL_get_verify_mode(const SSL *s) 756 { 757 return (s->verify_mode); 758 } 759 760 int 761 SSL_get_verify_depth(const SSL *s) 762 { 763 return (X509_VERIFY_PARAM_get_depth(s->param)); 764 } 765 766 int 767 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 768 { 769 return (s->verify_callback); 770 } 771 772 void 773 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 774 { 775 ctx->keylog_callback = cb; 776 } 777 778 SSL_CTX_keylog_cb_func 779 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 780 { 781 return (ctx->keylog_callback); 782 } 783 784 int 785 SSL_set_num_tickets(SSL *s, size_t num_tickets) 786 { 787 s->num_tickets = num_tickets; 788 789 return 1; 790 } 791 792 size_t 793 SSL_get_num_tickets(const SSL *s) 794 { 795 return s->num_tickets; 796 } 797 798 int 799 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 800 { 801 ctx->num_tickets = num_tickets; 802 803 return 1; 804 } 805 806 size_t 807 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 808 { 809 return ctx->num_tickets; 810 } 811 812 int 813 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 814 { 815 return (ctx->verify_mode); 816 } 817 818 int 819 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 820 { 821 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 822 } 823 824 int 825 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 826 { 827 return (ctx->default_verify_callback); 828 } 829 830 void 831 SSL_set_verify(SSL *s, int mode, 832 int (*callback)(int ok, X509_STORE_CTX *ctx)) 833 { 834 s->verify_mode = mode; 835 if (callback != NULL) 836 s->verify_callback = callback; 837 } 838 839 void 840 SSL_set_verify_depth(SSL *s, int depth) 841 { 842 X509_VERIFY_PARAM_set_depth(s->param, depth); 843 } 844 845 void 846 SSL_set_read_ahead(SSL *s, int yes) 847 { 848 s->read_ahead = yes; 849 } 850 851 int 852 SSL_get_read_ahead(const SSL *s) 853 { 854 return (s->read_ahead); 855 } 856 857 int 858 SSL_pending(const SSL *s) 859 { 860 return (s->method->ssl_pending(s)); 861 } 862 863 X509 * 864 SSL_get_peer_certificate(const SSL *s) 865 { 866 X509 *cert; 867 868 if (s == NULL || s->session == NULL) 869 return NULL; 870 871 if ((cert = s->session->peer_cert) == NULL) 872 return NULL; 873 874 X509_up_ref(cert); 875 876 return cert; 877 } 878 879 STACK_OF(X509) * 880 SSL_get_peer_cert_chain(const SSL *s) 881 { 882 if (s == NULL) 883 return NULL; 884 885 /* 886 * Achtung! Due to API inconsistency, a client includes the peer's leaf 887 * certificate in the peer certificate chain, while a server does not. 888 */ 889 if (!s->server) 890 return s->s3->hs.peer_certs; 891 892 return s->s3->hs.peer_certs_no_leaf; 893 } 894 895 STACK_OF(X509) * 896 SSL_get0_verified_chain(const SSL *s) 897 { 898 return s->verified_chain; 899 } 900 901 /* 902 * Now in theory, since the calling process own 't' it should be safe to 903 * modify. We need to be able to read f without being hassled 904 */ 905 int 906 SSL_copy_session_id(SSL *t, const SSL *f) 907 { 908 SSL_CERT *tmp; 909 910 /* Do we need to do SSL locking? */ 911 if (!SSL_set_session(t, SSL_get_session(f))) 912 return 0; 913 914 /* What if we are set up for one protocol but want to talk another? */ 915 if (t->method != f->method) { 916 t->method->ssl_free(t); 917 t->method = f->method; 918 if (!t->method->ssl_new(t)) 919 return 0; 920 } 921 922 tmp = t->cert; 923 if (f->cert != NULL) { 924 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 925 t->cert = f->cert; 926 } else 927 t->cert = NULL; 928 ssl_cert_free(tmp); 929 930 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 931 return 0; 932 933 return 1; 934 } 935 936 /* Fix this so it checks all the valid key/cert options */ 937 int 938 SSL_CTX_check_private_key(const SSL_CTX *ctx) 939 { 940 if ((ctx == NULL) || (ctx->cert == NULL) || 941 (ctx->cert->key->x509 == NULL)) { 942 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 943 return (0); 944 } 945 if (ctx->cert->key->privatekey == NULL) { 946 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 947 return (0); 948 } 949 return (X509_check_private_key(ctx->cert->key->x509, 950 ctx->cert->key->privatekey)); 951 } 952 953 /* Fix this function so that it takes an optional type parameter */ 954 int 955 SSL_check_private_key(const SSL *ssl) 956 { 957 if (ssl == NULL) { 958 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 959 return (0); 960 } 961 if (ssl->cert == NULL) { 962 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 963 return (0); 964 } 965 if (ssl->cert->key->x509 == NULL) { 966 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 967 return (0); 968 } 969 if (ssl->cert->key->privatekey == NULL) { 970 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 971 return (0); 972 } 973 return (X509_check_private_key(ssl->cert->key->x509, 974 ssl->cert->key->privatekey)); 975 } 976 977 int 978 SSL_accept(SSL *s) 979 { 980 if (s->handshake_func == NULL) 981 SSL_set_accept_state(s); /* Not properly initialized yet */ 982 983 return (s->method->ssl_accept(s)); 984 } 985 986 int 987 SSL_connect(SSL *s) 988 { 989 if (s->handshake_func == NULL) 990 SSL_set_connect_state(s); /* Not properly initialized yet */ 991 992 return (s->method->ssl_connect(s)); 993 } 994 995 int 996 SSL_is_dtls(const SSL *s) 997 { 998 return s->method->dtls; 999 } 1000 1001 int 1002 SSL_is_server(const SSL *s) 1003 { 1004 return s->server; 1005 } 1006 1007 static long 1008 ssl_get_default_timeout() 1009 { 1010 /* 1011 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1012 * is way too long for http, the cache would over fill. 1013 */ 1014 return (2 * 60 * 60); 1015 } 1016 1017 long 1018 SSL_get_default_timeout(const SSL *s) 1019 { 1020 return (ssl_get_default_timeout()); 1021 } 1022 1023 int 1024 SSL_read(SSL *s, void *buf, int num) 1025 { 1026 if (num < 0) { 1027 SSLerror(s, SSL_R_BAD_LENGTH); 1028 return -1; 1029 } 1030 1031 if (SSL_is_quic(s)) { 1032 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1033 return (-1); 1034 } 1035 1036 if (s->handshake_func == NULL) { 1037 SSLerror(s, SSL_R_UNINITIALIZED); 1038 return (-1); 1039 } 1040 1041 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1042 s->rwstate = SSL_NOTHING; 1043 return (0); 1044 } 1045 return ssl3_read(s, buf, num); 1046 } 1047 1048 int 1049 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1050 { 1051 int ret; 1052 1053 /* We simply don't bother supporting enormous reads */ 1054 if (num > INT_MAX) { 1055 SSLerror(s, SSL_R_BAD_LENGTH); 1056 return 0; 1057 } 1058 1059 ret = SSL_read(s, buf, (int)num); 1060 if (ret < 0) 1061 ret = 0; 1062 *bytes_read = ret; 1063 1064 return ret > 0; 1065 } 1066 1067 int 1068 SSL_peek(SSL *s, void *buf, int num) 1069 { 1070 if (num < 0) { 1071 SSLerror(s, SSL_R_BAD_LENGTH); 1072 return -1; 1073 } 1074 1075 if (SSL_is_quic(s)) { 1076 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1077 return (-1); 1078 } 1079 1080 if (s->handshake_func == NULL) { 1081 SSLerror(s, SSL_R_UNINITIALIZED); 1082 return (-1); 1083 } 1084 1085 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1086 return (0); 1087 } 1088 return ssl3_peek(s, buf, num); 1089 } 1090 1091 int 1092 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1093 { 1094 int ret; 1095 1096 /* We simply don't bother supporting enormous peeks */ 1097 if (num > INT_MAX) { 1098 SSLerror(s, SSL_R_BAD_LENGTH); 1099 return 0; 1100 } 1101 1102 ret = SSL_peek(s, buf, (int)num); 1103 if (ret < 0) 1104 ret = 0; 1105 *bytes_peeked = ret; 1106 1107 return ret > 0; 1108 } 1109 1110 int 1111 SSL_write(SSL *s, const void *buf, int num) 1112 { 1113 if (num < 0) { 1114 SSLerror(s, SSL_R_BAD_LENGTH); 1115 return -1; 1116 } 1117 1118 if (SSL_is_quic(s)) { 1119 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1120 return (-1); 1121 } 1122 1123 if (s->handshake_func == NULL) { 1124 SSLerror(s, SSL_R_UNINITIALIZED); 1125 return (-1); 1126 } 1127 1128 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1129 s->rwstate = SSL_NOTHING; 1130 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1131 return (-1); 1132 } 1133 return ssl3_write(s, buf, num); 1134 } 1135 1136 int 1137 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1138 { 1139 int ret; 1140 1141 /* We simply don't bother supporting enormous writes */ 1142 if (num > INT_MAX) { 1143 SSLerror(s, SSL_R_BAD_LENGTH); 1144 return 0; 1145 } 1146 1147 if (num == 0) { 1148 /* This API is special */ 1149 bytes_written = 0; 1150 return 1; 1151 } 1152 1153 ret = SSL_write(s, buf, (int)num); 1154 if (ret < 0) 1155 ret = 0; 1156 *bytes_written = ret; 1157 1158 return ret > 0; 1159 } 1160 1161 uint32_t 1162 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1163 { 1164 return 0; 1165 } 1166 1167 int 1168 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1169 { 1170 return 1; 1171 } 1172 1173 uint32_t 1174 SSL_get_max_early_data(const SSL *s) 1175 { 1176 return 0; 1177 } 1178 1179 int 1180 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1181 { 1182 return 1; 1183 } 1184 1185 int 1186 SSL_get_early_data_status(const SSL *s) 1187 { 1188 return SSL_EARLY_DATA_REJECTED; 1189 } 1190 1191 int 1192 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1193 { 1194 *readbytes = 0; 1195 1196 if (!s->server) { 1197 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1198 return SSL_READ_EARLY_DATA_ERROR; 1199 } 1200 1201 return SSL_READ_EARLY_DATA_FINISH; 1202 } 1203 1204 int 1205 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1206 { 1207 *written = 0; 1208 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1209 return 0; 1210 } 1211 1212 int 1213 SSL_shutdown(SSL *s) 1214 { 1215 /* 1216 * Note that this function behaves differently from what one might 1217 * expect. Return values are 0 for no success (yet), 1218 * 1 for success; but calling it once is usually not enough, 1219 * even if blocking I/O is used (see ssl3_shutdown). 1220 */ 1221 1222 if (s->handshake_func == NULL) { 1223 SSLerror(s, SSL_R_UNINITIALIZED); 1224 return (-1); 1225 } 1226 1227 if (s != NULL && !SSL_in_init(s)) 1228 return (s->method->ssl_shutdown(s)); 1229 1230 return (1); 1231 } 1232 1233 int 1234 SSL_renegotiate(SSL *s) 1235 { 1236 if (s->renegotiate == 0) 1237 s->renegotiate = 1; 1238 1239 s->new_session = 1; 1240 1241 return (s->method->ssl_renegotiate(s)); 1242 } 1243 1244 int 1245 SSL_renegotiate_abbreviated(SSL *s) 1246 { 1247 if (s->renegotiate == 0) 1248 s->renegotiate = 1; 1249 1250 s->new_session = 0; 1251 1252 return (s->method->ssl_renegotiate(s)); 1253 } 1254 1255 int 1256 SSL_renegotiate_pending(SSL *s) 1257 { 1258 /* 1259 * Becomes true when negotiation is requested; 1260 * false again once a handshake has finished. 1261 */ 1262 return (s->renegotiate != 0); 1263 } 1264 1265 long 1266 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1267 { 1268 long l; 1269 1270 switch (cmd) { 1271 case SSL_CTRL_GET_READ_AHEAD: 1272 return (s->read_ahead); 1273 case SSL_CTRL_SET_READ_AHEAD: 1274 l = s->read_ahead; 1275 s->read_ahead = larg; 1276 return (l); 1277 1278 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1279 s->msg_callback_arg = parg; 1280 return (1); 1281 1282 case SSL_CTRL_OPTIONS: 1283 return (s->options|=larg); 1284 case SSL_CTRL_CLEAR_OPTIONS: 1285 return (s->options&=~larg); 1286 case SSL_CTRL_MODE: 1287 return (s->mode|=larg); 1288 case SSL_CTRL_CLEAR_MODE: 1289 return (s->mode &=~larg); 1290 case SSL_CTRL_GET_MAX_CERT_LIST: 1291 return (s->max_cert_list); 1292 case SSL_CTRL_SET_MAX_CERT_LIST: 1293 l = s->max_cert_list; 1294 s->max_cert_list = larg; 1295 return (l); 1296 case SSL_CTRL_SET_MTU: 1297 #ifndef OPENSSL_NO_DTLS1 1298 if (larg < (long)dtls1_min_mtu()) 1299 return (0); 1300 #endif 1301 if (SSL_is_dtls(s)) { 1302 s->d1->mtu = larg; 1303 return (larg); 1304 } 1305 return (0); 1306 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1307 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1308 return (0); 1309 s->max_send_fragment = larg; 1310 return (1); 1311 case SSL_CTRL_GET_RI_SUPPORT: 1312 if (s->s3) 1313 return (s->s3->send_connection_binding); 1314 else return (0); 1315 default: 1316 if (SSL_is_dtls(s)) 1317 return dtls1_ctrl(s, cmd, larg, parg); 1318 return ssl3_ctrl(s, cmd, larg, parg); 1319 } 1320 } 1321 1322 long 1323 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1324 { 1325 switch (cmd) { 1326 case SSL_CTRL_SET_MSG_CALLBACK: 1327 s->msg_callback = (ssl_msg_callback_fn *)(fp); 1328 return (1); 1329 1330 default: 1331 return (ssl3_callback_ctrl(s, cmd, fp)); 1332 } 1333 } 1334 1335 struct lhash_st_SSL_SESSION * 1336 SSL_CTX_sessions(SSL_CTX *ctx) 1337 { 1338 return (ctx->sessions); 1339 } 1340 1341 long 1342 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1343 { 1344 long l; 1345 1346 switch (cmd) { 1347 case SSL_CTRL_GET_READ_AHEAD: 1348 return (ctx->read_ahead); 1349 case SSL_CTRL_SET_READ_AHEAD: 1350 l = ctx->read_ahead; 1351 ctx->read_ahead = larg; 1352 return (l); 1353 1354 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1355 ctx->msg_callback_arg = parg; 1356 return (1); 1357 1358 case SSL_CTRL_GET_MAX_CERT_LIST: 1359 return (ctx->max_cert_list); 1360 case SSL_CTRL_SET_MAX_CERT_LIST: 1361 l = ctx->max_cert_list; 1362 ctx->max_cert_list = larg; 1363 return (l); 1364 1365 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1366 l = ctx->session_cache_size; 1367 ctx->session_cache_size = larg; 1368 return (l); 1369 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1370 return (ctx->session_cache_size); 1371 case SSL_CTRL_SET_SESS_CACHE_MODE: 1372 l = ctx->session_cache_mode; 1373 ctx->session_cache_mode = larg; 1374 return (l); 1375 case SSL_CTRL_GET_SESS_CACHE_MODE: 1376 return (ctx->session_cache_mode); 1377 1378 case SSL_CTRL_SESS_NUMBER: 1379 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1380 case SSL_CTRL_SESS_CONNECT: 1381 return (ctx->stats.sess_connect); 1382 case SSL_CTRL_SESS_CONNECT_GOOD: 1383 return (ctx->stats.sess_connect_good); 1384 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1385 return (ctx->stats.sess_connect_renegotiate); 1386 case SSL_CTRL_SESS_ACCEPT: 1387 return (ctx->stats.sess_accept); 1388 case SSL_CTRL_SESS_ACCEPT_GOOD: 1389 return (ctx->stats.sess_accept_good); 1390 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1391 return (ctx->stats.sess_accept_renegotiate); 1392 case SSL_CTRL_SESS_HIT: 1393 return (ctx->stats.sess_hit); 1394 case SSL_CTRL_SESS_CB_HIT: 1395 return (ctx->stats.sess_cb_hit); 1396 case SSL_CTRL_SESS_MISSES: 1397 return (ctx->stats.sess_miss); 1398 case SSL_CTRL_SESS_TIMEOUTS: 1399 return (ctx->stats.sess_timeout); 1400 case SSL_CTRL_SESS_CACHE_FULL: 1401 return (ctx->stats.sess_cache_full); 1402 case SSL_CTRL_OPTIONS: 1403 return (ctx->options|=larg); 1404 case SSL_CTRL_CLEAR_OPTIONS: 1405 return (ctx->options&=~larg); 1406 case SSL_CTRL_MODE: 1407 return (ctx->mode|=larg); 1408 case SSL_CTRL_CLEAR_MODE: 1409 return (ctx->mode&=~larg); 1410 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1411 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1412 return (0); 1413 ctx->max_send_fragment = larg; 1414 return (1); 1415 default: 1416 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1417 } 1418 } 1419 1420 long 1421 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1422 { 1423 switch (cmd) { 1424 case SSL_CTRL_SET_MSG_CALLBACK: 1425 ctx->msg_callback = (ssl_msg_callback_fn *)fp; 1426 return (1); 1427 1428 default: 1429 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1430 } 1431 } 1432 1433 int 1434 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1435 { 1436 long l; 1437 1438 l = a->id - b->id; 1439 if (l == 0L) 1440 return (0); 1441 else 1442 return ((l > 0) ? 1:-1); 1443 } 1444 1445 STACK_OF(SSL_CIPHER) * 1446 SSL_get_ciphers(const SSL *s) 1447 { 1448 if (s == NULL) 1449 return (NULL); 1450 if (s->cipher_list != NULL) 1451 return (s->cipher_list); 1452 1453 return (s->ctx->cipher_list); 1454 } 1455 1456 STACK_OF(SSL_CIPHER) * 1457 SSL_get_client_ciphers(const SSL *s) 1458 { 1459 if (s == NULL || s->session == NULL || !s->server) 1460 return NULL; 1461 return s->session->ciphers; 1462 } 1463 1464 STACK_OF(SSL_CIPHER) * 1465 SSL_get1_supported_ciphers(SSL *s) 1466 { 1467 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1468 SSL_CIPHER *cipher; 1469 uint16_t min_vers, max_vers; 1470 int i; 1471 1472 if (s == NULL) 1473 return NULL; 1474 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1475 return NULL; 1476 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1477 return NULL; 1478 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1479 return NULL; 1480 1481 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1482 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1483 goto err; 1484 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1485 max_vers)) 1486 continue; 1487 if (!ssl_security_supported_cipher(s, cipher)) 1488 continue; 1489 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1490 goto err; 1491 } 1492 1493 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1494 return supported_ciphers; 1495 1496 err: 1497 sk_SSL_CIPHER_free(supported_ciphers); 1498 return NULL; 1499 } 1500 1501 /* See if we have any ECC cipher suites. */ 1502 int 1503 ssl_has_ecc_ciphers(SSL *s) 1504 { 1505 STACK_OF(SSL_CIPHER) *ciphers; 1506 unsigned long alg_k, alg_a; 1507 SSL_CIPHER *cipher; 1508 int i; 1509 1510 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1511 return 0; 1512 1513 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1514 cipher = sk_SSL_CIPHER_value(ciphers, i); 1515 1516 alg_k = cipher->algorithm_mkey; 1517 alg_a = cipher->algorithm_auth; 1518 1519 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1520 return 1; 1521 } 1522 1523 return 0; 1524 } 1525 1526 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1527 const char * 1528 SSL_get_cipher_list(const SSL *s, int n) 1529 { 1530 STACK_OF(SSL_CIPHER) *ciphers; 1531 const SSL_CIPHER *cipher; 1532 1533 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1534 return (NULL); 1535 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1536 return (NULL); 1537 1538 return (cipher->name); 1539 } 1540 1541 STACK_OF(SSL_CIPHER) * 1542 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1543 { 1544 if (ctx == NULL) 1545 return NULL; 1546 return ctx->cipher_list; 1547 } 1548 1549 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1550 int 1551 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1552 { 1553 STACK_OF(SSL_CIPHER) *ciphers; 1554 1555 /* 1556 * ssl_create_cipher_list may return an empty stack if it was unable to 1557 * find a cipher matching the given rule string (for example if the 1558 * rule string specifies a cipher which has been disabled). This is not 1559 * an error as far as ssl_create_cipher_list is concerned, and hence 1560 * ctx->cipher_list has been updated. 1561 */ 1562 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1563 ctx->cipher_list_tls13, str, ctx->cert); 1564 if (ciphers == NULL) { 1565 return (0); 1566 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1567 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1568 return (0); 1569 } 1570 return (1); 1571 } 1572 1573 int 1574 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1575 { 1576 if (!ssl_parse_ciphersuites(&ctx->cipher_list_tls13, str)) { 1577 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1578 return 0; 1579 } 1580 if (!ssl_merge_cipherlists(ctx->cipher_list, 1581 ctx->cipher_list_tls13, &ctx->cipher_list)) 1582 return 0; 1583 1584 return 1; 1585 } 1586 1587 /* Specify the ciphers to be used by the SSL. */ 1588 int 1589 SSL_set_cipher_list(SSL *s, const char *str) 1590 { 1591 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1592 1593 if ((ciphers_tls13 = s->cipher_list_tls13) == NULL) 1594 ciphers_tls13 = s->ctx->cipher_list_tls13; 1595 1596 /* See comment in SSL_CTX_set_cipher_list. */ 1597 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1598 ciphers_tls13, str, s->cert); 1599 if (ciphers == NULL) { 1600 return (0); 1601 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1602 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1603 return (0); 1604 } 1605 return (1); 1606 } 1607 1608 int 1609 SSL_set_ciphersuites(SSL *s, const char *str) 1610 { 1611 STACK_OF(SSL_CIPHER) *ciphers; 1612 1613 if ((ciphers = s->cipher_list) == NULL) 1614 ciphers = s->ctx->cipher_list; 1615 1616 if (!ssl_parse_ciphersuites(&s->cipher_list_tls13, str)) { 1617 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1618 return (0); 1619 } 1620 if (!ssl_merge_cipherlists(ciphers, s->cipher_list_tls13, 1621 &s->cipher_list)) 1622 return 0; 1623 1624 return 1; 1625 } 1626 1627 char * 1628 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1629 { 1630 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1631 const SSL_CIPHER *cipher; 1632 size_t curlen = 0; 1633 char *end; 1634 int i; 1635 1636 if (!s->server || s->session == NULL || len < 2) 1637 return NULL; 1638 1639 if ((client_ciphers = s->session->ciphers) == NULL) 1640 return NULL; 1641 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1642 return NULL; 1643 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1644 sk_SSL_CIPHER_num(server_ciphers) == 0) 1645 return NULL; 1646 1647 buf[0] = '\0'; 1648 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1649 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1650 1651 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1652 continue; 1653 1654 end = buf + curlen; 1655 if (strlcat(buf, cipher->name, len) >= len || 1656 (curlen = strlcat(buf, ":", len)) >= len) { 1657 /* remove truncated cipher from list */ 1658 *end = '\0'; 1659 break; 1660 } 1661 } 1662 /* remove trailing colon */ 1663 if ((end = strrchr(buf, ':')) != NULL) 1664 *end = '\0'; 1665 return buf; 1666 } 1667 1668 /* 1669 * Return a servername extension value if provided in Client Hello, or NULL. 1670 * So far, only host_name types are defined (RFC 3546). 1671 */ 1672 const char * 1673 SSL_get_servername(const SSL *s, const int type) 1674 { 1675 if (type != TLSEXT_NAMETYPE_host_name) 1676 return (NULL); 1677 1678 return (s->session && !s->tlsext_hostname ? 1679 s->session->tlsext_hostname : 1680 s->tlsext_hostname); 1681 } 1682 1683 int 1684 SSL_get_servername_type(const SSL *s) 1685 { 1686 if (s->session && 1687 (!s->tlsext_hostname ? 1688 s->session->tlsext_hostname : s->tlsext_hostname)) 1689 return (TLSEXT_NAMETYPE_host_name); 1690 return (-1); 1691 } 1692 1693 /* 1694 * SSL_select_next_proto implements standard protocol selection. It is 1695 * expected that this function is called from the callback set by 1696 * SSL_CTX_set_alpn_select_cb. 1697 * 1698 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1699 * strings. The length byte itself is not included in the length. A byte 1700 * string of length 0 is invalid. No byte string may be truncated. 1701 * 1702 * It returns either: 1703 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1704 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1705 */ 1706 int 1707 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1708 const unsigned char *server, unsigned int server_len, 1709 const unsigned char *client, unsigned int client_len) 1710 { 1711 unsigned int i, j; 1712 const unsigned char *result; 1713 int status = OPENSSL_NPN_UNSUPPORTED; 1714 1715 /* 1716 * For each protocol in server preference order, 1717 * see if we support it. 1718 */ 1719 for (i = 0; i < server_len; ) { 1720 for (j = 0; j < client_len; ) { 1721 if (server[i] == client[j] && 1722 memcmp(&server[i + 1], 1723 &client[j + 1], server[i]) == 0) { 1724 /* We found a match */ 1725 result = &server[i]; 1726 status = OPENSSL_NPN_NEGOTIATED; 1727 goto found; 1728 } 1729 j += client[j]; 1730 j++; 1731 } 1732 i += server[i]; 1733 i++; 1734 } 1735 1736 /* There's no overlap between our protocols and the server's list. */ 1737 result = client; 1738 status = OPENSSL_NPN_NO_OVERLAP; 1739 1740 found: 1741 *out = (unsigned char *) result + 1; 1742 *outlen = result[0]; 1743 return (status); 1744 } 1745 1746 /* SSL_get0_next_proto_negotiated is deprecated. */ 1747 void 1748 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1749 unsigned int *len) 1750 { 1751 *data = NULL; 1752 *len = 0; 1753 } 1754 1755 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1756 void 1757 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1758 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1759 { 1760 } 1761 1762 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1763 void 1764 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1765 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1766 unsigned int inlen, void *arg), void *arg) 1767 { 1768 } 1769 1770 /* 1771 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1772 * protocols, which must be in wire-format (i.e. a series of non-empty, 1773 * 8-bit length-prefixed strings). Returns 0 on success. 1774 */ 1775 int 1776 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1777 unsigned int protos_len) 1778 { 1779 CBS cbs; 1780 int failed = 1; 1781 1782 if (protos == NULL) 1783 protos_len = 0; 1784 1785 CBS_init(&cbs, protos, protos_len); 1786 1787 if (protos_len > 0) { 1788 if (!tlsext_alpn_check_format(&cbs)) 1789 goto err; 1790 } 1791 1792 if (!CBS_stow(&cbs, &ctx->alpn_client_proto_list, 1793 &ctx->alpn_client_proto_list_len)) 1794 goto err; 1795 1796 failed = 0; 1797 1798 err: 1799 /* NOTE: Return values are the reverse of what you expect. */ 1800 return failed; 1801 } 1802 1803 /* 1804 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1805 * protocols, which must be in wire-format (i.e. a series of non-empty, 1806 * 8-bit length-prefixed strings). Returns 0 on success. 1807 */ 1808 int 1809 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1810 unsigned int protos_len) 1811 { 1812 CBS cbs; 1813 int failed = 1; 1814 1815 if (protos == NULL) 1816 protos_len = 0; 1817 1818 CBS_init(&cbs, protos, protos_len); 1819 1820 if (protos_len > 0) { 1821 if (!tlsext_alpn_check_format(&cbs)) 1822 goto err; 1823 } 1824 1825 if (!CBS_stow(&cbs, &ssl->alpn_client_proto_list, 1826 &ssl->alpn_client_proto_list_len)) 1827 goto err; 1828 1829 failed = 0; 1830 1831 err: 1832 /* NOTE: Return values are the reverse of what you expect. */ 1833 return failed; 1834 } 1835 1836 /* 1837 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1838 * ClientHello processing in order to select an ALPN protocol from the 1839 * client's list of offered protocols. 1840 */ 1841 void 1842 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1843 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1844 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1845 { 1846 ctx->alpn_select_cb = cb; 1847 ctx->alpn_select_cb_arg = arg; 1848 } 1849 1850 /* 1851 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1852 * it sets data to point to len bytes of protocol name (not including the 1853 * leading length-prefix byte). If the server didn't respond with* a negotiated 1854 * protocol then len will be zero. 1855 */ 1856 void 1857 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1858 unsigned int *len) 1859 { 1860 *data = ssl->s3->alpn_selected; 1861 *len = ssl->s3->alpn_selected_len; 1862 } 1863 1864 void 1865 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1866 { 1867 return; 1868 } 1869 1870 int 1871 SSL_export_keying_material(SSL *s, unsigned char *out, size_t out_len, 1872 const char *label, size_t label_len, const unsigned char *context, 1873 size_t context_len, int use_context) 1874 { 1875 if (s->tls13 != NULL && s->version == TLS1_3_VERSION) { 1876 if (!use_context) { 1877 context = NULL; 1878 context_len = 0; 1879 } 1880 return tls13_exporter(s->tls13, label, label_len, context, 1881 context_len, out, out_len); 1882 } 1883 1884 return tls12_exporter(s, label, label_len, context, context_len, 1885 use_context, out, out_len); 1886 } 1887 1888 static unsigned long 1889 ssl_session_hash(const SSL_SESSION *a) 1890 { 1891 unsigned long l; 1892 1893 l = (unsigned long) 1894 ((unsigned int) a->session_id[0] )| 1895 ((unsigned int) a->session_id[1]<< 8L)| 1896 ((unsigned long)a->session_id[2]<<16L)| 1897 ((unsigned long)a->session_id[3]<<24L); 1898 return (l); 1899 } 1900 1901 /* 1902 * NB: If this function (or indeed the hash function which uses a sort of 1903 * coarser function than this one) is changed, ensure 1904 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1905 * able to construct an SSL_SESSION that will collide with any existing session 1906 * with a matching session ID. 1907 */ 1908 static int 1909 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1910 { 1911 if (a->ssl_version != b->ssl_version) 1912 return (1); 1913 if (a->session_id_length != b->session_id_length) 1914 return (1); 1915 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1916 return (1); 1917 return (0); 1918 } 1919 1920 /* 1921 * These wrapper functions should remain rather than redeclaring 1922 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1923 * variable. The reason is that the functions aren't static, they're exposed via 1924 * ssl.h. 1925 */ 1926 static unsigned long 1927 ssl_session_LHASH_HASH(const void *arg) 1928 { 1929 const SSL_SESSION *a = arg; 1930 1931 return ssl_session_hash(a); 1932 } 1933 1934 static int 1935 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1936 { 1937 const SSL_SESSION *a = arg1; 1938 const SSL_SESSION *b = arg2; 1939 1940 return ssl_session_cmp(a, b); 1941 } 1942 1943 SSL_CTX * 1944 SSL_CTX_new(const SSL_METHOD *meth) 1945 { 1946 SSL_CTX *ret; 1947 1948 if (!OPENSSL_init_ssl(0, NULL)) { 1949 SSLerrorx(SSL_R_LIBRARY_BUG); 1950 return (NULL); 1951 } 1952 1953 if (meth == NULL) { 1954 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1955 return (NULL); 1956 } 1957 1958 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1959 SSLerrorx(ERR_R_MALLOC_FAILURE); 1960 return (NULL); 1961 } 1962 1963 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1964 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1965 goto err; 1966 } 1967 1968 ret->method = meth; 1969 ret->min_tls_version = meth->min_tls_version; 1970 ret->max_tls_version = meth->max_tls_version; 1971 ret->min_proto_version = 0; 1972 ret->max_proto_version = 0; 1973 ret->mode = SSL_MODE_AUTO_RETRY; 1974 1975 ret->cert_store = NULL; 1976 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1977 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1978 ret->session_cache_head = NULL; 1979 ret->session_cache_tail = NULL; 1980 1981 /* We take the system default */ 1982 ret->session_timeout = ssl_get_default_timeout(); 1983 1984 ret->new_session_cb = 0; 1985 ret->remove_session_cb = 0; 1986 ret->get_session_cb = 0; 1987 ret->generate_session_id = 0; 1988 1989 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1990 1991 ret->references = 1; 1992 ret->quiet_shutdown = 0; 1993 1994 ret->info_callback = NULL; 1995 1996 ret->app_verify_callback = 0; 1997 ret->app_verify_arg = NULL; 1998 1999 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 2000 ret->read_ahead = 0; 2001 ret->msg_callback = 0; 2002 ret->msg_callback_arg = NULL; 2003 ret->verify_mode = SSL_VERIFY_NONE; 2004 ret->sid_ctx_length = 0; 2005 ret->default_verify_callback = NULL; 2006 2007 if ((ret->cert = ssl_cert_new()) == NULL) 2008 goto err; 2009 2010 ret->default_passwd_callback = 0; 2011 ret->default_passwd_callback_userdata = NULL; 2012 ret->client_cert_cb = 0; 2013 ret->app_gen_cookie_cb = 0; 2014 ret->app_verify_cookie_cb = 0; 2015 2016 ret->sessions = lh_SSL_SESSION_new(); 2017 if (ret->sessions == NULL) 2018 goto err; 2019 ret->cert_store = X509_STORE_new(); 2020 if (ret->cert_store == NULL) 2021 goto err; 2022 2023 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2024 NULL, SSL_DEFAULT_CIPHER_LIST, ret->cert); 2025 if (ret->cipher_list == NULL || 2026 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2027 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2028 goto err2; 2029 } 2030 2031 ret->param = X509_VERIFY_PARAM_new(); 2032 if (!ret->param) 2033 goto err; 2034 2035 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 2036 goto err; 2037 2038 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 2039 2040 ret->extra_certs = NULL; 2041 2042 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2043 2044 ret->tlsext_servername_callback = 0; 2045 ret->tlsext_servername_arg = NULL; 2046 2047 /* Setup RFC4507 ticket keys */ 2048 arc4random_buf(ret->tlsext_tick_key_name, 16); 2049 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 2050 arc4random_buf(ret->tlsext_tick_aes_key, 16); 2051 2052 ret->tlsext_status_cb = 0; 2053 ret->tlsext_status_arg = NULL; 2054 2055 #ifndef OPENSSL_NO_ENGINE 2056 ret->client_cert_engine = NULL; 2057 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2058 #define eng_strx(x) #x 2059 #define eng_str(x) eng_strx(x) 2060 /* Use specific client engine automatically... ignore errors */ 2061 { 2062 ENGINE *eng; 2063 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2064 if (!eng) { 2065 ERR_clear_error(); 2066 ENGINE_load_builtin_engines(); 2067 eng = ENGINE_by_id(eng_str( 2068 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2069 } 2070 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2071 ERR_clear_error(); 2072 } 2073 #endif 2074 #endif 2075 /* 2076 * Default is to connect to non-RI servers. When RI is more widely 2077 * deployed might change this. 2078 */ 2079 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2080 2081 return (ret); 2082 err: 2083 SSLerrorx(ERR_R_MALLOC_FAILURE); 2084 err2: 2085 SSL_CTX_free(ret); 2086 return (NULL); 2087 } 2088 2089 void 2090 SSL_CTX_free(SSL_CTX *ctx) 2091 { 2092 int i; 2093 2094 if (ctx == NULL) 2095 return; 2096 2097 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2098 if (i > 0) 2099 return; 2100 2101 X509_VERIFY_PARAM_free(ctx->param); 2102 2103 /* 2104 * Free internal session cache. However: the remove_cb() may reference 2105 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2106 * after the sessions were flushed. 2107 * As the ex_data handling routines might also touch the session cache, 2108 * the most secure solution seems to be: empty (flush) the cache, then 2109 * free ex_data, then finally free the cache. 2110 * (See ticket [openssl.org #212].) 2111 */ 2112 if (ctx->sessions != NULL) 2113 SSL_CTX_flush_sessions(ctx, 0); 2114 2115 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->ex_data); 2116 2117 lh_SSL_SESSION_free(ctx->sessions); 2118 2119 X509_STORE_free(ctx->cert_store); 2120 sk_SSL_CIPHER_free(ctx->cipher_list); 2121 sk_SSL_CIPHER_free(ctx->cipher_list_tls13); 2122 ssl_cert_free(ctx->cert); 2123 sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free); 2124 sk_X509_pop_free(ctx->extra_certs, X509_free); 2125 2126 #ifndef OPENSSL_NO_SRTP 2127 if (ctx->srtp_profiles) 2128 sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles); 2129 #endif 2130 2131 #ifndef OPENSSL_NO_ENGINE 2132 ENGINE_finish(ctx->client_cert_engine); 2133 #endif 2134 2135 free(ctx->tlsext_ecpointformatlist); 2136 free(ctx->tlsext_supportedgroups); 2137 2138 free(ctx->alpn_client_proto_list); 2139 2140 free(ctx); 2141 } 2142 2143 int 2144 SSL_CTX_up_ref(SSL_CTX *ctx) 2145 { 2146 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2147 return ((refs > 1) ? 1 : 0); 2148 } 2149 2150 pem_password_cb * 2151 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2152 { 2153 return (ctx->default_passwd_callback); 2154 } 2155 2156 void 2157 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2158 { 2159 ctx->default_passwd_callback = cb; 2160 } 2161 2162 void * 2163 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2164 { 2165 return ctx->default_passwd_callback_userdata; 2166 } 2167 2168 void 2169 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2170 { 2171 ctx->default_passwd_callback_userdata = u; 2172 } 2173 2174 void 2175 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2176 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2177 { 2178 ctx->app_verify_callback = cb; 2179 ctx->app_verify_arg = arg; 2180 } 2181 2182 void 2183 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2184 { 2185 ctx->verify_mode = mode; 2186 ctx->default_verify_callback = cb; 2187 } 2188 2189 void 2190 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2191 { 2192 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2193 } 2194 2195 void 2196 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2197 { 2198 unsigned long mask_a, mask_k; 2199 SSL_CERT_PKEY *cpk; 2200 2201 if (c == NULL) 2202 return; 2203 2204 mask_a = SSL_aNULL | SSL_aTLS1_3; 2205 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2206 2207 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2208 c->dhe_params_auto != 0) 2209 mask_k |= SSL_kDHE; 2210 2211 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2212 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2213 /* Key usage, if present, must allow signing. */ 2214 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2215 mask_a |= SSL_aECDSA; 2216 } 2217 2218 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2219 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2220 mask_k |= SSL_kGOST; 2221 mask_a |= SSL_aGOST01; 2222 } 2223 2224 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2225 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2226 mask_a |= SSL_aRSA; 2227 mask_k |= SSL_kRSA; 2228 } 2229 2230 c->mask_k = mask_k; 2231 c->mask_a = mask_a; 2232 c->valid = 1; 2233 } 2234 2235 /* See if this handshake is using an ECC cipher suite. */ 2236 int 2237 ssl_using_ecc_cipher(SSL *s) 2238 { 2239 unsigned long alg_a, alg_k; 2240 2241 alg_a = s->s3->hs.cipher->algorithm_auth; 2242 alg_k = s->s3->hs.cipher->algorithm_mkey; 2243 2244 return s->session->tlsext_ecpointformatlist != NULL && 2245 s->session->tlsext_ecpointformatlist_length > 0 && 2246 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2247 } 2248 2249 int 2250 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2251 { 2252 const SSL_CIPHER *cs = s->s3->hs.cipher; 2253 unsigned long alg_a; 2254 2255 alg_a = cs->algorithm_auth; 2256 2257 if (alg_a & SSL_aECDSA) { 2258 /* Key usage, if present, must allow signing. */ 2259 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2260 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2261 return (0); 2262 } 2263 } 2264 2265 return (1); 2266 } 2267 2268 SSL_CERT_PKEY * 2269 ssl_get_server_send_pkey(const SSL *s) 2270 { 2271 unsigned long alg_a; 2272 SSL_CERT *c; 2273 int i; 2274 2275 c = s->cert; 2276 ssl_set_cert_masks(c, s->s3->hs.cipher); 2277 2278 alg_a = s->s3->hs.cipher->algorithm_auth; 2279 2280 if (alg_a & SSL_aECDSA) { 2281 i = SSL_PKEY_ECC; 2282 } else if (alg_a & SSL_aRSA) { 2283 i = SSL_PKEY_RSA; 2284 } else if (alg_a & SSL_aGOST01) { 2285 i = SSL_PKEY_GOST01; 2286 } else { /* if (alg_a & SSL_aNULL) */ 2287 SSLerror(s, ERR_R_INTERNAL_ERROR); 2288 return (NULL); 2289 } 2290 2291 return (c->pkeys + i); 2292 } 2293 2294 EVP_PKEY * 2295 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2296 const struct ssl_sigalg **sap) 2297 { 2298 const struct ssl_sigalg *sigalg = NULL; 2299 EVP_PKEY *pkey = NULL; 2300 unsigned long alg_a; 2301 SSL_CERT *c; 2302 int idx = -1; 2303 2304 alg_a = cipher->algorithm_auth; 2305 c = s->cert; 2306 2307 if (alg_a & SSL_aRSA) { 2308 idx = SSL_PKEY_RSA; 2309 } else if ((alg_a & SSL_aECDSA) && 2310 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2311 idx = SSL_PKEY_ECC; 2312 if (idx == -1) { 2313 SSLerror(s, ERR_R_INTERNAL_ERROR); 2314 return (NULL); 2315 } 2316 2317 pkey = c->pkeys[idx].privatekey; 2318 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2319 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2320 return (NULL); 2321 } 2322 *pmd = sigalg->md(); 2323 *sap = sigalg; 2324 2325 return (pkey); 2326 } 2327 2328 size_t 2329 ssl_dhe_params_auto_key_bits(SSL *s) 2330 { 2331 SSL_CERT_PKEY *cpk; 2332 int key_bits; 2333 2334 if (s->cert->dhe_params_auto == 2) { 2335 key_bits = 1024; 2336 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2337 key_bits = 1024; 2338 if (s->s3->hs.cipher->strength_bits == 256) 2339 key_bits = 3072; 2340 } else { 2341 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2342 return 0; 2343 if (cpk->privatekey == NULL || 2344 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2345 return 0; 2346 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2347 return 0; 2348 } 2349 2350 return key_bits; 2351 } 2352 2353 static int 2354 ssl_should_update_external_cache(SSL *s, int mode) 2355 { 2356 int cache_mode; 2357 2358 cache_mode = s->session_ctx->session_cache_mode; 2359 2360 /* Don't cache if mode says not to */ 2361 if ((cache_mode & mode) == 0) 2362 return 0; 2363 2364 /* if it is not already cached, cache it */ 2365 if (!s->hit) 2366 return 1; 2367 2368 /* If it's TLS 1.3, do it to match OpenSSL */ 2369 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2370 return 1; 2371 2372 return 0; 2373 } 2374 2375 static int 2376 ssl_should_update_internal_cache(SSL *s, int mode) 2377 { 2378 int cache_mode; 2379 2380 cache_mode = s->session_ctx->session_cache_mode; 2381 2382 /* Don't cache if mode says not to */ 2383 if ((cache_mode & mode) == 0) 2384 return 0; 2385 2386 /* If it is already cached, don't cache it again */ 2387 if (s->hit) 2388 return 0; 2389 2390 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2391 return 0; 2392 2393 /* If we are lesser than TLS 1.3, Cache it. */ 2394 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2395 return 1; 2396 2397 /* Below this we consider TLS 1.3 or later */ 2398 2399 /* If it's not a server, add it? OpenSSL does this. */ 2400 if (!s->server) 2401 return 1; 2402 2403 /* XXX if we support early data / PSK need to add */ 2404 2405 /* 2406 * If we have the remove session callback, we will want 2407 * to know about this even if it's a stateless ticket 2408 * from 1.3 so we can know when it is removed. 2409 */ 2410 if (s->session_ctx->remove_session_cb != NULL) 2411 return 1; 2412 2413 /* If we have set OP_NO_TICKET, cache it. */ 2414 if ((s->options & SSL_OP_NO_TICKET) != 0) 2415 return 1; 2416 2417 /* Otherwise do not cache */ 2418 return 0; 2419 } 2420 2421 void 2422 ssl_update_cache(SSL *s, int mode) 2423 { 2424 int cache_mode, do_callback; 2425 2426 if (s->session->session_id_length == 0) 2427 return; 2428 2429 cache_mode = s->session_ctx->session_cache_mode; 2430 do_callback = ssl_should_update_external_cache(s, mode); 2431 2432 if (ssl_should_update_internal_cache(s, mode)) { 2433 /* 2434 * XXX should we fail if the add to the internal cache 2435 * fails? OpenSSL doesn't care.. 2436 */ 2437 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2438 } 2439 2440 /* 2441 * Update the "external cache" by calling the new session 2442 * callback if present, even with TLS 1.3 without early data 2443 * "because some application just want to know about the 2444 * creation of a session and aren't doing a full cache". 2445 * Apparently, if they are doing a full cache, they'll have 2446 * some fun, but we endeavour to give application writers the 2447 * same glorious experience they expect from OpenSSL which 2448 * does it this way. 2449 */ 2450 if (do_callback && s->session_ctx->new_session_cb != NULL) { 2451 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2452 if (!s->session_ctx->new_session_cb(s, s->session)) 2453 SSL_SESSION_free(s->session); 2454 } 2455 2456 /* Auto flush every 255 connections. */ 2457 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2458 (cache_mode & mode) != 0) { 2459 int connections; 2460 if (mode & SSL_SESS_CACHE_CLIENT) 2461 connections = s->session_ctx->stats.sess_connect_good; 2462 else 2463 connections = s->session_ctx->stats.sess_accept_good; 2464 if ((connections & 0xff) == 0xff) 2465 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2466 } 2467 } 2468 2469 const SSL_METHOD * 2470 SSL_get_ssl_method(SSL *s) 2471 { 2472 return (s->method); 2473 } 2474 2475 int 2476 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2477 { 2478 int (*handshake_func)(SSL *) = NULL; 2479 int ret = 1; 2480 2481 if (s->method == method) 2482 return (ret); 2483 2484 if (s->handshake_func == s->method->ssl_connect) 2485 handshake_func = method->ssl_connect; 2486 else if (s->handshake_func == s->method->ssl_accept) 2487 handshake_func = method->ssl_accept; 2488 2489 if (s->method->version == method->version) { 2490 s->method = method; 2491 } else { 2492 s->method->ssl_free(s); 2493 s->method = method; 2494 ret = s->method->ssl_new(s); 2495 } 2496 s->handshake_func = handshake_func; 2497 2498 return (ret); 2499 } 2500 2501 int 2502 SSL_get_error(const SSL *s, int i) 2503 { 2504 unsigned long l; 2505 int reason; 2506 BIO *bio; 2507 2508 if (i > 0) 2509 return (SSL_ERROR_NONE); 2510 2511 /* 2512 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2513 * etc, where we do encode the error. 2514 */ 2515 if ((l = ERR_peek_error()) != 0) { 2516 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2517 return (SSL_ERROR_SYSCALL); 2518 else 2519 return (SSL_ERROR_SSL); 2520 } 2521 2522 if (SSL_want_read(s)) { 2523 bio = SSL_get_rbio(s); 2524 if (BIO_should_read(bio)) { 2525 return (SSL_ERROR_WANT_READ); 2526 } else if (BIO_should_write(bio)) { 2527 /* 2528 * This one doesn't make too much sense... We never 2529 * try to write to the rbio, and an application 2530 * program where rbio and wbio are separate couldn't 2531 * even know what it should wait for. However if we 2532 * ever set s->rwstate incorrectly (so that we have 2533 * SSL_want_read(s) instead of SSL_want_write(s)) 2534 * and rbio and wbio *are* the same, this test works 2535 * around that bug; so it might be safer to keep it. 2536 */ 2537 return (SSL_ERROR_WANT_WRITE); 2538 } else if (BIO_should_io_special(bio)) { 2539 reason = BIO_get_retry_reason(bio); 2540 if (reason == BIO_RR_CONNECT) 2541 return (SSL_ERROR_WANT_CONNECT); 2542 else if (reason == BIO_RR_ACCEPT) 2543 return (SSL_ERROR_WANT_ACCEPT); 2544 else 2545 return (SSL_ERROR_SYSCALL); /* unknown */ 2546 } 2547 } 2548 2549 if (SSL_want_write(s)) { 2550 bio = SSL_get_wbio(s); 2551 if (BIO_should_write(bio)) { 2552 return (SSL_ERROR_WANT_WRITE); 2553 } else if (BIO_should_read(bio)) { 2554 /* 2555 * See above (SSL_want_read(s) with 2556 * BIO_should_write(bio)) 2557 */ 2558 return (SSL_ERROR_WANT_READ); 2559 } else if (BIO_should_io_special(bio)) { 2560 reason = BIO_get_retry_reason(bio); 2561 if (reason == BIO_RR_CONNECT) 2562 return (SSL_ERROR_WANT_CONNECT); 2563 else if (reason == BIO_RR_ACCEPT) 2564 return (SSL_ERROR_WANT_ACCEPT); 2565 else 2566 return (SSL_ERROR_SYSCALL); 2567 } 2568 } 2569 2570 if (SSL_want_x509_lookup(s)) 2571 return (SSL_ERROR_WANT_X509_LOOKUP); 2572 2573 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2574 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2575 return (SSL_ERROR_ZERO_RETURN); 2576 2577 return (SSL_ERROR_SYSCALL); 2578 } 2579 2580 int 2581 SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method) 2582 { 2583 if (ctx->method->dtls) 2584 return 0; 2585 2586 ctx->quic_method = quic_method; 2587 2588 return 1; 2589 } 2590 2591 int 2592 SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method) 2593 { 2594 if (ssl->method->dtls) 2595 return 0; 2596 2597 ssl->quic_method = quic_method; 2598 2599 return 1; 2600 } 2601 2602 size_t 2603 SSL_quic_max_handshake_flight_len(const SSL *ssl, 2604 enum ssl_encryption_level_t level) 2605 { 2606 size_t flight_len; 2607 2608 /* Limit flights to 16K when there are no large certificate messages. */ 2609 flight_len = 16384; 2610 2611 switch (level) { 2612 case ssl_encryption_initial: 2613 return flight_len; 2614 2615 case ssl_encryption_early_data: 2616 /* QUIC does not send EndOfEarlyData. */ 2617 return 0; 2618 2619 case ssl_encryption_handshake: 2620 if (ssl->server) { 2621 /* 2622 * Servers may receive Certificate message if configured 2623 * to request client certificates. 2624 */ 2625 if ((SSL_get_verify_mode(ssl) & SSL_VERIFY_PEER) != 0 && 2626 ssl->max_cert_list > flight_len) 2627 flight_len = ssl->max_cert_list; 2628 } else { 2629 /* 2630 * Clients may receive both Certificate message and a 2631 * CertificateRequest message. 2632 */ 2633 if (ssl->max_cert_list * 2 > flight_len) 2634 flight_len = ssl->max_cert_list * 2; 2635 } 2636 return flight_len; 2637 case ssl_encryption_application: 2638 /* 2639 * Note there is not actually a bound on the number of 2640 * NewSessionTickets one may send in a row. This level may need 2641 * more involved flow control. 2642 */ 2643 return flight_len; 2644 } 2645 2646 return 0; 2647 } 2648 2649 enum ssl_encryption_level_t 2650 SSL_quic_read_level(const SSL *ssl) 2651 { 2652 return ssl->s3->hs.tls13.quic_read_level; 2653 } 2654 2655 enum ssl_encryption_level_t 2656 SSL_quic_write_level(const SSL *ssl) 2657 { 2658 return ssl->s3->hs.tls13.quic_write_level; 2659 } 2660 2661 int 2662 SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level, 2663 const uint8_t *data, size_t len) 2664 { 2665 if (!SSL_is_quic(ssl)) { 2666 SSLerror(ssl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2667 return 0; 2668 } 2669 2670 if (level != SSL_quic_read_level(ssl)) { 2671 SSLerror(ssl, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED); 2672 return 0; 2673 } 2674 2675 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2676 ssl->s3->hs.tls13.quic_read_buffer = tls_buffer_new(0); 2677 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2678 SSLerror(ssl, ERR_R_MALLOC_FAILURE); 2679 return 0; 2680 } 2681 } 2682 2683 /* XXX - note that this does not currently downsize. */ 2684 tls_buffer_set_capacity_limit(ssl->s3->hs.tls13.quic_read_buffer, 2685 SSL_quic_max_handshake_flight_len(ssl, level)); 2686 2687 /* 2688 * XXX - an append that fails due to exceeding capacity should set 2689 * SSL_R_EXCESSIVE_MESSAGE_SIZE. 2690 */ 2691 return tls_buffer_append(ssl->s3->hs.tls13.quic_read_buffer, data, len); 2692 } 2693 2694 int 2695 SSL_process_quic_post_handshake(SSL *ssl) 2696 { 2697 /* XXX - this needs to run PHH received. */ 2698 return 1; 2699 } 2700 2701 int 2702 SSL_do_handshake(SSL *s) 2703 { 2704 if (s->handshake_func == NULL) { 2705 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2706 return (-1); 2707 } 2708 2709 s->method->ssl_renegotiate_check(s); 2710 2711 if (!SSL_in_init(s) && !SSL_in_before(s)) 2712 return 1; 2713 2714 return s->handshake_func(s); 2715 } 2716 2717 /* 2718 * For the next 2 functions, SSL_clear() sets shutdown and so 2719 * one of these calls will reset it 2720 */ 2721 void 2722 SSL_set_accept_state(SSL *s) 2723 { 2724 s->server = 1; 2725 s->shutdown = 0; 2726 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2727 s->handshake_func = s->method->ssl_accept; 2728 ssl_clear_cipher_state(s); 2729 } 2730 2731 void 2732 SSL_set_connect_state(SSL *s) 2733 { 2734 s->server = 0; 2735 s->shutdown = 0; 2736 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2737 s->handshake_func = s->method->ssl_connect; 2738 ssl_clear_cipher_state(s); 2739 } 2740 2741 int 2742 ssl_undefined_function(SSL *s) 2743 { 2744 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2745 return (0); 2746 } 2747 2748 int 2749 ssl_undefined_void_function(void) 2750 { 2751 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2752 return (0); 2753 } 2754 2755 int 2756 ssl_undefined_const_function(const SSL *s) 2757 { 2758 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2759 return (0); 2760 } 2761 2762 const char * 2763 ssl_version_string(int ver) 2764 { 2765 switch (ver) { 2766 case TLS1_VERSION: 2767 return (SSL_TXT_TLSV1); 2768 case TLS1_1_VERSION: 2769 return (SSL_TXT_TLSV1_1); 2770 case TLS1_2_VERSION: 2771 return (SSL_TXT_TLSV1_2); 2772 case TLS1_3_VERSION: 2773 return (SSL_TXT_TLSV1_3); 2774 case DTLS1_VERSION: 2775 return (SSL_TXT_DTLS1); 2776 case DTLS1_2_VERSION: 2777 return (SSL_TXT_DTLS1_2); 2778 default: 2779 return ("unknown"); 2780 } 2781 } 2782 2783 const char * 2784 SSL_get_version(const SSL *s) 2785 { 2786 return ssl_version_string(s->version); 2787 } 2788 2789 SSL * 2790 SSL_dup(SSL *s) 2791 { 2792 STACK_OF(X509_NAME) *sk; 2793 X509_NAME *xn; 2794 SSL *ret; 2795 int i; 2796 2797 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2798 goto err; 2799 2800 ret->version = s->version; 2801 ret->method = s->method; 2802 2803 if (s->session != NULL) { 2804 if (!SSL_copy_session_id(ret, s)) 2805 goto err; 2806 } else { 2807 /* 2808 * No session has been established yet, so we have to expect 2809 * that s->cert or ret->cert will be changed later -- 2810 * they should not both point to the same object, 2811 * and thus we can't use SSL_copy_session_id. 2812 */ 2813 2814 ret->method->ssl_free(ret); 2815 ret->method = s->method; 2816 ret->method->ssl_new(ret); 2817 2818 ssl_cert_free(ret->cert); 2819 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2820 goto err; 2821 2822 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2823 s->sid_ctx_length)) 2824 goto err; 2825 } 2826 2827 ret->options = s->options; 2828 ret->mode = s->mode; 2829 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2830 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2831 ret->msg_callback = s->msg_callback; 2832 ret->msg_callback_arg = s->msg_callback_arg; 2833 SSL_set_verify(ret, SSL_get_verify_mode(s), 2834 SSL_get_verify_callback(s)); 2835 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2836 ret->generate_session_id = s->generate_session_id; 2837 2838 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2839 2840 ret->debug = s->debug; 2841 2842 /* copy app data, a little dangerous perhaps */ 2843 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2844 &ret->ex_data, &s->ex_data)) 2845 goto err; 2846 2847 /* setup rbio, and wbio */ 2848 if (s->rbio != NULL) { 2849 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2850 goto err; 2851 } 2852 if (s->wbio != NULL) { 2853 if (s->wbio != s->rbio) { 2854 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2855 goto err; 2856 } else 2857 ret->wbio = ret->rbio; 2858 } 2859 ret->rwstate = s->rwstate; 2860 ret->in_handshake = s->in_handshake; 2861 ret->handshake_func = s->handshake_func; 2862 ret->server = s->server; 2863 ret->renegotiate = s->renegotiate; 2864 ret->new_session = s->new_session; 2865 ret->quiet_shutdown = s->quiet_shutdown; 2866 ret->shutdown = s->shutdown; 2867 /* SSL_dup does not really work at any state, though */ 2868 ret->s3->hs.state = s->s3->hs.state; 2869 ret->rstate = s->rstate; 2870 2871 /* 2872 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2873 * ret->init_off 2874 */ 2875 ret->init_num = 0; 2876 2877 ret->hit = s->hit; 2878 2879 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2880 2881 if (s->cipher_list != NULL) { 2882 if ((ret->cipher_list = 2883 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2884 goto err; 2885 } 2886 if (s->cipher_list_tls13 != NULL) { 2887 if ((ret->cipher_list_tls13 = 2888 sk_SSL_CIPHER_dup(s->cipher_list_tls13)) == NULL) 2889 goto err; 2890 } 2891 2892 /* Dup the client_CA list */ 2893 if (s->client_CA != NULL) { 2894 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2895 ret->client_CA = sk; 2896 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2897 xn = sk_X509_NAME_value(sk, i); 2898 if (sk_X509_NAME_set(sk, i, 2899 X509_NAME_dup(xn)) == NULL) { 2900 X509_NAME_free(xn); 2901 goto err; 2902 } 2903 } 2904 } 2905 2906 return ret; 2907 err: 2908 SSL_free(ret); 2909 return NULL; 2910 } 2911 2912 void 2913 ssl_clear_cipher_state(SSL *s) 2914 { 2915 tls12_record_layer_clear_read_state(s->rl); 2916 tls12_record_layer_clear_write_state(s->rl); 2917 } 2918 2919 void 2920 ssl_info_callback(const SSL *s, int type, int value) 2921 { 2922 ssl_info_callback_fn *cb; 2923 2924 if ((cb = s->info_callback) == NULL) 2925 cb = s->ctx->info_callback; 2926 if (cb != NULL) 2927 cb(s, type, value); 2928 } 2929 2930 void 2931 ssl_msg_callback(SSL *s, int is_write, int content_type, 2932 const void *msg_buf, size_t msg_len) 2933 { 2934 if (s->msg_callback == NULL) 2935 return; 2936 2937 s->msg_callback(is_write, s->version, content_type, 2938 msg_buf, msg_len, s, s->msg_callback_arg); 2939 } 2940 2941 void 2942 ssl_msg_callback_cbs(SSL *s, int is_write, int content_type, CBS *cbs) 2943 { 2944 ssl_msg_callback(s, is_write, content_type, CBS_data(cbs), CBS_len(cbs)); 2945 } 2946 2947 /* Fix this function so that it takes an optional type parameter */ 2948 X509 * 2949 SSL_get_certificate(const SSL *s) 2950 { 2951 return (s->cert->key->x509); 2952 } 2953 2954 /* Fix this function so that it takes an optional type parameter */ 2955 EVP_PKEY * 2956 SSL_get_privatekey(const SSL *s) 2957 { 2958 return (s->cert->key->privatekey); 2959 } 2960 2961 const SSL_CIPHER * 2962 SSL_get_current_cipher(const SSL *s) 2963 { 2964 if ((s->session != NULL) && (s->session->cipher != NULL)) 2965 return (s->session->cipher); 2966 return (NULL); 2967 } 2968 const void * 2969 SSL_get_current_compression(SSL *s) 2970 { 2971 return (NULL); 2972 } 2973 2974 const void * 2975 SSL_get_current_expansion(SSL *s) 2976 { 2977 return (NULL); 2978 } 2979 2980 size_t 2981 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2982 { 2983 size_t len = sizeof(s->s3->client_random); 2984 2985 if (out == NULL) 2986 return len; 2987 2988 if (len > max_out) 2989 len = max_out; 2990 2991 memcpy(out, s->s3->client_random, len); 2992 2993 return len; 2994 } 2995 2996 size_t 2997 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2998 { 2999 size_t len = sizeof(s->s3->server_random); 3000 3001 if (out == NULL) 3002 return len; 3003 3004 if (len > max_out) 3005 len = max_out; 3006 3007 memcpy(out, s->s3->server_random, len); 3008 3009 return len; 3010 } 3011 3012 int 3013 ssl_init_wbio_buffer(SSL *s, int push) 3014 { 3015 BIO *bbio; 3016 3017 if (s->bbio == NULL) { 3018 bbio = BIO_new(BIO_f_buffer()); 3019 if (bbio == NULL) 3020 return (0); 3021 s->bbio = bbio; 3022 } else { 3023 bbio = s->bbio; 3024 if (s->bbio == s->wbio) 3025 s->wbio = BIO_pop(s->wbio); 3026 } 3027 (void)BIO_reset(bbio); 3028 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3029 if (!BIO_set_read_buffer_size(bbio, 1)) { 3030 SSLerror(s, ERR_R_BUF_LIB); 3031 return (0); 3032 } 3033 if (push) { 3034 if (s->wbio != bbio) 3035 s->wbio = BIO_push(bbio, s->wbio); 3036 } else { 3037 if (s->wbio == bbio) 3038 s->wbio = BIO_pop(bbio); 3039 } 3040 return (1); 3041 } 3042 3043 void 3044 ssl_free_wbio_buffer(SSL *s) 3045 { 3046 if (s == NULL) 3047 return; 3048 3049 if (s->bbio == NULL) 3050 return; 3051 3052 if (s->bbio == s->wbio) { 3053 /* remove buffering */ 3054 s->wbio = BIO_pop(s->wbio); 3055 } 3056 BIO_free(s->bbio); 3057 s->bbio = NULL; 3058 } 3059 3060 void 3061 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3062 { 3063 ctx->quiet_shutdown = mode; 3064 } 3065 3066 int 3067 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3068 { 3069 return (ctx->quiet_shutdown); 3070 } 3071 3072 void 3073 SSL_set_quiet_shutdown(SSL *s, int mode) 3074 { 3075 s->quiet_shutdown = mode; 3076 } 3077 3078 int 3079 SSL_get_quiet_shutdown(const SSL *s) 3080 { 3081 return (s->quiet_shutdown); 3082 } 3083 3084 void 3085 SSL_set_shutdown(SSL *s, int mode) 3086 { 3087 s->shutdown = mode; 3088 } 3089 3090 int 3091 SSL_get_shutdown(const SSL *s) 3092 { 3093 return (s->shutdown); 3094 } 3095 3096 int 3097 SSL_version(const SSL *s) 3098 { 3099 return (s->version); 3100 } 3101 3102 SSL_CTX * 3103 SSL_get_SSL_CTX(const SSL *ssl) 3104 { 3105 return (ssl->ctx); 3106 } 3107 3108 SSL_CTX * 3109 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3110 { 3111 SSL_CERT *new_cert; 3112 3113 if (ctx == NULL) 3114 ctx = ssl->initial_ctx; 3115 if (ssl->ctx == ctx) 3116 return (ssl->ctx); 3117 3118 if ((new_cert = ssl_cert_dup(ctx->cert)) == NULL) 3119 return NULL; 3120 ssl_cert_free(ssl->cert); 3121 ssl->cert = new_cert; 3122 3123 SSL_CTX_up_ref(ctx); 3124 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3125 ssl->ctx = ctx; 3126 3127 return (ssl->ctx); 3128 } 3129 3130 int 3131 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3132 { 3133 return (X509_STORE_set_default_paths(ctx->cert_store)); 3134 } 3135 3136 int 3137 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3138 const char *CApath) 3139 { 3140 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3141 } 3142 3143 int 3144 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3145 { 3146 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3147 } 3148 3149 void 3150 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3151 { 3152 ssl->info_callback = cb; 3153 } 3154 3155 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3156 { 3157 return (ssl->info_callback); 3158 } 3159 3160 int 3161 SSL_state(const SSL *ssl) 3162 { 3163 return (ssl->s3->hs.state); 3164 } 3165 3166 void 3167 SSL_set_state(SSL *ssl, int state) 3168 { 3169 ssl->s3->hs.state = state; 3170 } 3171 3172 void 3173 SSL_set_verify_result(SSL *ssl, long arg) 3174 { 3175 ssl->verify_result = arg; 3176 } 3177 3178 long 3179 SSL_get_verify_result(const SSL *ssl) 3180 { 3181 return (ssl->verify_result); 3182 } 3183 3184 int 3185 SSL_verify_client_post_handshake(SSL *ssl) 3186 { 3187 return 0; 3188 } 3189 3190 void 3191 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3192 { 3193 return; 3194 } 3195 3196 void 3197 SSL_set_post_handshake_auth(SSL *ssl, int val) 3198 { 3199 return; 3200 } 3201 3202 int 3203 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3204 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3205 { 3206 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3207 new_func, dup_func, free_func)); 3208 } 3209 3210 int 3211 SSL_set_ex_data(SSL *s, int idx, void *arg) 3212 { 3213 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3214 } 3215 3216 void * 3217 SSL_get_ex_data(const SSL *s, int idx) 3218 { 3219 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3220 } 3221 3222 int 3223 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3224 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3225 { 3226 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3227 new_func, dup_func, free_func)); 3228 } 3229 3230 int 3231 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3232 { 3233 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3234 } 3235 3236 void * 3237 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3238 { 3239 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3240 } 3241 3242 int 3243 ssl_ok(SSL *s) 3244 { 3245 return (1); 3246 } 3247 3248 X509_STORE * 3249 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3250 { 3251 return (ctx->cert_store); 3252 } 3253 3254 void 3255 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3256 { 3257 X509_STORE_free(ctx->cert_store); 3258 ctx->cert_store = store; 3259 } 3260 3261 X509 * 3262 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3263 { 3264 if (ctx->cert == NULL) 3265 return NULL; 3266 3267 return ctx->cert->key->x509; 3268 } 3269 3270 EVP_PKEY * 3271 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3272 { 3273 if (ctx->cert == NULL) 3274 return NULL; 3275 3276 return ctx->cert->key->privatekey; 3277 } 3278 3279 int 3280 SSL_want(const SSL *s) 3281 { 3282 return (s->rwstate); 3283 } 3284 3285 void 3286 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3287 int keylength)) 3288 { 3289 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3290 } 3291 3292 void 3293 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3294 int keylength)) 3295 { 3296 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3297 } 3298 3299 void 3300 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3301 int keylength)) 3302 { 3303 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3304 } 3305 3306 void 3307 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3308 int keylength)) 3309 { 3310 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3311 } 3312 3313 void 3314 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3315 int is_export, int keylength)) 3316 { 3317 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3318 (void (*)(void))ecdh); 3319 } 3320 3321 void 3322 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3323 int keylength)) 3324 { 3325 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3326 } 3327 3328 3329 void 3330 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3331 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3332 { 3333 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3334 (void (*)(void))cb); 3335 } 3336 3337 void 3338 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3339 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3340 { 3341 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3342 } 3343 3344 void 3345 SSL_set_debug(SSL *s, int debug) 3346 { 3347 s->debug = debug; 3348 } 3349 3350 int 3351 SSL_cache_hit(SSL *s) 3352 { 3353 return (s->hit); 3354 } 3355 3356 int 3357 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3358 { 3359 return ctx->min_proto_version; 3360 } 3361 3362 int 3363 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3364 { 3365 return ssl_version_set_min(ctx->method, version, 3366 ctx->max_tls_version, &ctx->min_tls_version, 3367 &ctx->min_proto_version); 3368 } 3369 3370 int 3371 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3372 { 3373 return ctx->max_proto_version; 3374 } 3375 3376 int 3377 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3378 { 3379 return ssl_version_set_max(ctx->method, version, 3380 ctx->min_tls_version, &ctx->max_tls_version, 3381 &ctx->max_proto_version); 3382 } 3383 3384 int 3385 SSL_get_min_proto_version(SSL *ssl) 3386 { 3387 return ssl->min_proto_version; 3388 } 3389 3390 int 3391 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3392 { 3393 return ssl_version_set_min(ssl->method, version, 3394 ssl->max_tls_version, &ssl->min_tls_version, 3395 &ssl->min_proto_version); 3396 } 3397 int 3398 SSL_get_max_proto_version(SSL *ssl) 3399 { 3400 return ssl->max_proto_version; 3401 } 3402 3403 int 3404 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3405 { 3406 return ssl_version_set_max(ssl->method, version, 3407 ssl->min_tls_version, &ssl->max_tls_version, 3408 &ssl->max_proto_version); 3409 } 3410 3411 const SSL_METHOD * 3412 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3413 { 3414 return ctx->method; 3415 } 3416 3417 int 3418 SSL_CTX_get_security_level(const SSL_CTX *ctx) 3419 { 3420 return ctx->cert->security_level; 3421 } 3422 3423 void 3424 SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3425 { 3426 ctx->cert->security_level = level; 3427 } 3428 3429 int 3430 SSL_get_security_level(const SSL *ssl) 3431 { 3432 return ssl->cert->security_level; 3433 } 3434 3435 void 3436 SSL_set_security_level(SSL *ssl, int level) 3437 { 3438 ssl->cert->security_level = level; 3439 } 3440 3441 int 3442 SSL_is_quic(const SSL *ssl) 3443 { 3444 return ssl->quic_method != NULL; 3445 } 3446 3447 int 3448 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3449 size_t params_len) 3450 { 3451 freezero(ssl->quic_transport_params, 3452 ssl->quic_transport_params_len); 3453 ssl->quic_transport_params = NULL; 3454 ssl->quic_transport_params_len = 0; 3455 3456 if ((ssl->quic_transport_params = malloc(params_len)) == NULL) 3457 return 0; 3458 3459 memcpy(ssl->quic_transport_params, params, params_len); 3460 ssl->quic_transport_params_len = params_len; 3461 3462 return 1; 3463 } 3464 3465 void 3466 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3467 size_t *out_params_len) 3468 { 3469 *out_params = ssl->s3->peer_quic_transport_params; 3470 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3471 } 3472 3473 void 3474 SSL_set_quic_use_legacy_codepoint(SSL *ssl, int use_legacy) 3475 { 3476 /* Not supported. */ 3477 } 3478 3479 static int 3480 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3481 { 3482 SSL_CIPHER const *a = a_; 3483 SSL_CIPHER const *b = b_; 3484 return ssl_cipher_id_cmp(a, b); 3485 } 3486 3487 SSL_CIPHER * 3488 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3489 { 3490 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3491 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3492 } 3493