1 /* $OpenBSD: ssl_lib.c,v 1.310 2023/05/26 13:44:05 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 (!tlsext_randomize_build_order(s)) 306 goto err; 307 308 if (ctx->tlsext_ecpointformatlist != NULL) { 309 s->tlsext_ecpointformatlist = 310 calloc(ctx->tlsext_ecpointformatlist_length, 311 sizeof(ctx->tlsext_ecpointformatlist[0])); 312 if (s->tlsext_ecpointformatlist == NULL) 313 goto err; 314 memcpy(s->tlsext_ecpointformatlist, 315 ctx->tlsext_ecpointformatlist, 316 ctx->tlsext_ecpointformatlist_length * 317 sizeof(ctx->tlsext_ecpointformatlist[0])); 318 s->tlsext_ecpointformatlist_length = 319 ctx->tlsext_ecpointformatlist_length; 320 } 321 if (ctx->tlsext_supportedgroups != NULL) { 322 s->tlsext_supportedgroups = 323 calloc(ctx->tlsext_supportedgroups_length, 324 sizeof(ctx->tlsext_supportedgroups[0])); 325 if (s->tlsext_supportedgroups == NULL) 326 goto err; 327 memcpy(s->tlsext_supportedgroups, 328 ctx->tlsext_supportedgroups, 329 ctx->tlsext_supportedgroups_length * 330 sizeof(ctx->tlsext_supportedgroups[0])); 331 s->tlsext_supportedgroups_length = 332 ctx->tlsext_supportedgroups_length; 333 } 334 335 CBS_init(&cbs, ctx->alpn_client_proto_list, 336 ctx->alpn_client_proto_list_len); 337 if (!CBS_stow(&cbs, &s->alpn_client_proto_list, 338 &s->alpn_client_proto_list_len)) 339 goto err; 340 341 s->verify_result = X509_V_OK; 342 343 s->method = ctx->method; 344 s->quic_method = ctx->quic_method; 345 346 if (!s->method->ssl_new(s)) 347 goto err; 348 349 s->references = 1; 350 s->server = ctx->method->server; 351 352 SSL_clear(s); 353 354 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 355 356 return (s); 357 358 err: 359 SSL_free(s); 360 SSLerrorx(ERR_R_MALLOC_FAILURE); 361 return (NULL); 362 } 363 364 int 365 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 366 unsigned int sid_ctx_len) 367 { 368 if (sid_ctx_len > sizeof ctx->sid_ctx) { 369 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 370 return (0); 371 } 372 ctx->sid_ctx_length = sid_ctx_len; 373 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 374 375 return (1); 376 } 377 378 int 379 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381 { 382 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 383 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ssl->sid_ctx_length = sid_ctx_len; 387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390 } 391 392 int 393 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 394 { 395 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 396 ctx->generate_session_id = cb; 397 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 398 return (1); 399 } 400 401 int 402 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 403 { 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 405 ssl->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 407 return (1); 408 } 409 410 int 411 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 412 unsigned int id_len) 413 { 414 /* 415 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 416 * shows how we can "construct" a session to give us the desired 417 * check - ie. to find if there's a session in the hash table 418 * that would conflict with any new session built out of this 419 * id/id_len and the ssl_version in use by this SSL. 420 */ 421 SSL_SESSION r, *p; 422 423 if (id_len > sizeof r.session_id) 424 return (0); 425 426 r.ssl_version = ssl->version; 427 r.session_id_length = id_len; 428 memcpy(r.session_id, id, id_len); 429 430 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 431 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 432 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 433 return (p != NULL); 434 } 435 436 int 437 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 438 { 439 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 440 } 441 442 int 443 SSL_set_purpose(SSL *s, int purpose) 444 { 445 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 446 } 447 448 int 449 SSL_CTX_set_trust(SSL_CTX *s, int trust) 450 { 451 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 452 } 453 454 int 455 SSL_set_trust(SSL *s, int trust) 456 { 457 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 458 } 459 460 int 461 SSL_set1_host(SSL *s, const char *hostname) 462 { 463 struct in_addr ina; 464 struct in6_addr in6a; 465 466 if (hostname != NULL && *hostname != '\0' && 467 (inet_pton(AF_INET, hostname, &ina) == 1 || 468 inet_pton(AF_INET6, hostname, &in6a) == 1)) 469 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 470 else 471 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 472 } 473 474 void 475 SSL_set_hostflags(SSL *s, unsigned int flags) 476 { 477 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 478 } 479 480 const char * 481 SSL_get0_peername(SSL *s) 482 { 483 return X509_VERIFY_PARAM_get0_peername(s->param); 484 } 485 486 X509_VERIFY_PARAM * 487 SSL_CTX_get0_param(SSL_CTX *ctx) 488 { 489 return (ctx->param); 490 } 491 492 int 493 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 494 { 495 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 496 } 497 498 X509_VERIFY_PARAM * 499 SSL_get0_param(SSL *ssl) 500 { 501 return (ssl->param); 502 } 503 504 int 505 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 506 { 507 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 508 } 509 510 void 511 SSL_free(SSL *s) 512 { 513 int i; 514 515 if (s == NULL) 516 return; 517 518 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 519 if (i > 0) 520 return; 521 522 X509_VERIFY_PARAM_free(s->param); 523 524 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 525 526 if (s->bbio != NULL) { 527 /* If the buffering BIO is in place, pop it off */ 528 if (s->bbio == s->wbio) { 529 s->wbio = BIO_pop(s->wbio); 530 } 531 BIO_free(s->bbio); 532 s->bbio = NULL; 533 } 534 535 if (s->rbio != s->wbio) 536 BIO_free_all(s->rbio); 537 BIO_free_all(s->wbio); 538 539 tls13_ctx_free(s->tls13); 540 541 ssl3_release_init_buffer(s); 542 543 sk_SSL_CIPHER_free(s->cipher_list); 544 sk_SSL_CIPHER_free(s->cipher_list_tls13); 545 546 /* Make the next call work :-) */ 547 if (s->session != NULL) { 548 ssl_clear_bad_session(s); 549 SSL_SESSION_free(s->session); 550 } 551 552 ssl_clear_cipher_state(s); 553 554 ssl_cert_free(s->cert); 555 556 free(s->tlsext_build_order); 557 558 free(s->tlsext_hostname); 559 SSL_CTX_free(s->initial_ctx); 560 561 free(s->tlsext_ecpointformatlist); 562 free(s->tlsext_supportedgroups); 563 564 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 565 X509_EXTENSION_free); 566 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 567 free(s->tlsext_ocsp_resp); 568 569 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 570 571 if (s->method != NULL) 572 s->method->ssl_free(s); 573 574 SSL_CTX_free(s->ctx); 575 576 free(s->alpn_client_proto_list); 577 578 free(s->quic_transport_params); 579 580 #ifndef OPENSSL_NO_SRTP 581 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 582 #endif 583 584 tls12_record_layer_free(s->rl); 585 586 free(s); 587 } 588 589 int 590 SSL_up_ref(SSL *s) 591 { 592 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 593 return (refs > 1) ? 1 : 0; 594 } 595 596 void 597 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 598 { 599 /* If the output buffering BIO is still in place, remove it */ 600 if (s->bbio != NULL) { 601 if (s->wbio == s->bbio) { 602 s->wbio = BIO_next(s->wbio); 603 BIO_set_next(s->bbio, NULL); 604 } 605 } 606 607 if (s->rbio != rbio && s->rbio != s->wbio) 608 BIO_free_all(s->rbio); 609 if (s->wbio != wbio) 610 BIO_free_all(s->wbio); 611 s->rbio = rbio; 612 s->wbio = wbio; 613 } 614 615 BIO * 616 SSL_get_rbio(const SSL *s) 617 { 618 return (s->rbio); 619 } 620 621 void 622 SSL_set0_rbio(SSL *s, BIO *rbio) 623 { 624 BIO_free_all(s->rbio); 625 s->rbio = rbio; 626 } 627 628 BIO * 629 SSL_get_wbio(const SSL *s) 630 { 631 return (s->wbio); 632 } 633 634 int 635 SSL_get_fd(const SSL *s) 636 { 637 return (SSL_get_rfd(s)); 638 } 639 640 int 641 SSL_get_rfd(const SSL *s) 642 { 643 int ret = -1; 644 BIO *b, *r; 645 646 b = SSL_get_rbio(s); 647 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 648 if (r != NULL) 649 BIO_get_fd(r, &ret); 650 return (ret); 651 } 652 653 int 654 SSL_get_wfd(const SSL *s) 655 { 656 int ret = -1; 657 BIO *b, *r; 658 659 b = SSL_get_wbio(s); 660 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 661 if (r != NULL) 662 BIO_get_fd(r, &ret); 663 return (ret); 664 } 665 666 int 667 SSL_set_fd(SSL *s, int fd) 668 { 669 int ret = 0; 670 BIO *bio = NULL; 671 672 bio = BIO_new(BIO_s_socket()); 673 674 if (bio == NULL) { 675 SSLerror(s, ERR_R_BUF_LIB); 676 goto err; 677 } 678 BIO_set_fd(bio, fd, BIO_NOCLOSE); 679 SSL_set_bio(s, bio, bio); 680 ret = 1; 681 err: 682 return (ret); 683 } 684 685 int 686 SSL_set_wfd(SSL *s, int fd) 687 { 688 int ret = 0; 689 BIO *bio = NULL; 690 691 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 692 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 693 bio = BIO_new(BIO_s_socket()); 694 695 if (bio == NULL) { 696 SSLerror(s, ERR_R_BUF_LIB); 697 goto err; 698 } 699 BIO_set_fd(bio, fd, BIO_NOCLOSE); 700 SSL_set_bio(s, SSL_get_rbio(s), bio); 701 } else 702 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 703 ret = 1; 704 err: 705 return (ret); 706 } 707 708 int 709 SSL_set_rfd(SSL *s, int fd) 710 { 711 int ret = 0; 712 BIO *bio = NULL; 713 714 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 715 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 716 bio = BIO_new(BIO_s_socket()); 717 718 if (bio == NULL) { 719 SSLerror(s, ERR_R_BUF_LIB); 720 goto err; 721 } 722 BIO_set_fd(bio, fd, BIO_NOCLOSE); 723 SSL_set_bio(s, bio, SSL_get_wbio(s)); 724 } else 725 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 726 ret = 1; 727 err: 728 return (ret); 729 } 730 731 732 /* return length of latest Finished message we sent, copy to 'buf' */ 733 size_t 734 SSL_get_finished(const SSL *s, void *buf, size_t count) 735 { 736 size_t ret; 737 738 ret = s->s3->hs.finished_len; 739 if (count > ret) 740 count = ret; 741 memcpy(buf, s->s3->hs.finished, count); 742 return (ret); 743 } 744 745 /* return length of latest Finished message we expected, copy to 'buf' */ 746 size_t 747 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 748 { 749 size_t ret; 750 751 ret = s->s3->hs.peer_finished_len; 752 if (count > ret) 753 count = ret; 754 memcpy(buf, s->s3->hs.peer_finished, count); 755 return (ret); 756 } 757 758 759 int 760 SSL_get_verify_mode(const SSL *s) 761 { 762 return (s->verify_mode); 763 } 764 765 int 766 SSL_get_verify_depth(const SSL *s) 767 { 768 return (X509_VERIFY_PARAM_get_depth(s->param)); 769 } 770 771 int 772 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 773 { 774 return (s->verify_callback); 775 } 776 777 void 778 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 779 { 780 ctx->keylog_callback = cb; 781 } 782 783 SSL_CTX_keylog_cb_func 784 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 785 { 786 return (ctx->keylog_callback); 787 } 788 789 int 790 SSL_set_num_tickets(SSL *s, size_t num_tickets) 791 { 792 s->num_tickets = num_tickets; 793 794 return 1; 795 } 796 797 size_t 798 SSL_get_num_tickets(const SSL *s) 799 { 800 return s->num_tickets; 801 } 802 803 int 804 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 805 { 806 ctx->num_tickets = num_tickets; 807 808 return 1; 809 } 810 811 size_t 812 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 813 { 814 return ctx->num_tickets; 815 } 816 817 int 818 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 819 { 820 return (ctx->verify_mode); 821 } 822 823 int 824 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 825 { 826 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 827 } 828 829 int 830 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 831 { 832 return (ctx->default_verify_callback); 833 } 834 835 void 836 SSL_set_verify(SSL *s, int mode, 837 int (*callback)(int ok, X509_STORE_CTX *ctx)) 838 { 839 s->verify_mode = mode; 840 if (callback != NULL) 841 s->verify_callback = callback; 842 } 843 844 void 845 SSL_set_verify_depth(SSL *s, int depth) 846 { 847 X509_VERIFY_PARAM_set_depth(s->param, depth); 848 } 849 850 void 851 SSL_set_read_ahead(SSL *s, int yes) 852 { 853 s->read_ahead = yes; 854 } 855 856 int 857 SSL_get_read_ahead(const SSL *s) 858 { 859 return (s->read_ahead); 860 } 861 862 int 863 SSL_pending(const SSL *s) 864 { 865 return (s->method->ssl_pending(s)); 866 } 867 868 X509 * 869 SSL_get_peer_certificate(const SSL *s) 870 { 871 X509 *cert; 872 873 if (s == NULL || s->session == NULL) 874 return NULL; 875 876 if ((cert = s->session->peer_cert) == NULL) 877 return NULL; 878 879 X509_up_ref(cert); 880 881 return cert; 882 } 883 884 STACK_OF(X509) * 885 SSL_get_peer_cert_chain(const SSL *s) 886 { 887 if (s == NULL) 888 return NULL; 889 890 /* 891 * Achtung! Due to API inconsistency, a client includes the peer's leaf 892 * certificate in the peer certificate chain, while a server does not. 893 */ 894 if (!s->server) 895 return s->s3->hs.peer_certs; 896 897 return s->s3->hs.peer_certs_no_leaf; 898 } 899 900 STACK_OF(X509) * 901 SSL_get0_verified_chain(const SSL *s) 902 { 903 if (s->s3 == NULL) 904 return NULL; 905 return s->s3->hs.verified_chain; 906 } 907 908 /* 909 * Now in theory, since the calling process own 't' it should be safe to 910 * modify. We need to be able to read f without being hassled 911 */ 912 int 913 SSL_copy_session_id(SSL *t, const SSL *f) 914 { 915 SSL_CERT *tmp; 916 917 /* Do we need to do SSL locking? */ 918 if (!SSL_set_session(t, SSL_get_session(f))) 919 return 0; 920 921 /* What if we are set up for one protocol but want to talk another? */ 922 if (t->method != f->method) { 923 t->method->ssl_free(t); 924 t->method = f->method; 925 if (!t->method->ssl_new(t)) 926 return 0; 927 } 928 929 tmp = t->cert; 930 if (f->cert != NULL) { 931 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 932 t->cert = f->cert; 933 } else 934 t->cert = NULL; 935 ssl_cert_free(tmp); 936 937 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 938 return 0; 939 940 return 1; 941 } 942 943 /* Fix this so it checks all the valid key/cert options */ 944 int 945 SSL_CTX_check_private_key(const SSL_CTX *ctx) 946 { 947 if ((ctx == NULL) || (ctx->cert == NULL) || 948 (ctx->cert->key->x509 == NULL)) { 949 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 950 return (0); 951 } 952 if (ctx->cert->key->privatekey == NULL) { 953 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 954 return (0); 955 } 956 return (X509_check_private_key(ctx->cert->key->x509, 957 ctx->cert->key->privatekey)); 958 } 959 960 /* Fix this function so that it takes an optional type parameter */ 961 int 962 SSL_check_private_key(const SSL *ssl) 963 { 964 if (ssl == NULL) { 965 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 966 return (0); 967 } 968 if (ssl->cert == NULL) { 969 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 970 return (0); 971 } 972 if (ssl->cert->key->x509 == NULL) { 973 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 974 return (0); 975 } 976 if (ssl->cert->key->privatekey == NULL) { 977 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 978 return (0); 979 } 980 return (X509_check_private_key(ssl->cert->key->x509, 981 ssl->cert->key->privatekey)); 982 } 983 984 int 985 SSL_accept(SSL *s) 986 { 987 if (s->handshake_func == NULL) 988 SSL_set_accept_state(s); /* Not properly initialized yet */ 989 990 return (s->method->ssl_accept(s)); 991 } 992 993 int 994 SSL_connect(SSL *s) 995 { 996 if (s->handshake_func == NULL) 997 SSL_set_connect_state(s); /* Not properly initialized yet */ 998 999 return (s->method->ssl_connect(s)); 1000 } 1001 1002 int 1003 SSL_is_dtls(const SSL *s) 1004 { 1005 return s->method->dtls; 1006 } 1007 1008 int 1009 SSL_is_server(const SSL *s) 1010 { 1011 return s->server; 1012 } 1013 1014 static long 1015 ssl_get_default_timeout() 1016 { 1017 /* 1018 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1019 * is way too long for http, the cache would over fill. 1020 */ 1021 return (2 * 60 * 60); 1022 } 1023 1024 long 1025 SSL_get_default_timeout(const SSL *s) 1026 { 1027 return (ssl_get_default_timeout()); 1028 } 1029 1030 int 1031 SSL_read(SSL *s, void *buf, int num) 1032 { 1033 if (num < 0) { 1034 SSLerror(s, SSL_R_BAD_LENGTH); 1035 return -1; 1036 } 1037 1038 if (SSL_is_quic(s)) { 1039 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1040 return (-1); 1041 } 1042 1043 if (s->handshake_func == NULL) { 1044 SSLerror(s, SSL_R_UNINITIALIZED); 1045 return (-1); 1046 } 1047 1048 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1049 s->rwstate = SSL_NOTHING; 1050 return (0); 1051 } 1052 return ssl3_read(s, buf, num); 1053 } 1054 1055 int 1056 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1057 { 1058 int ret; 1059 1060 /* We simply don't bother supporting enormous reads */ 1061 if (num > INT_MAX) { 1062 SSLerror(s, SSL_R_BAD_LENGTH); 1063 return 0; 1064 } 1065 1066 ret = SSL_read(s, buf, (int)num); 1067 if (ret < 0) 1068 ret = 0; 1069 *bytes_read = ret; 1070 1071 return ret > 0; 1072 } 1073 1074 int 1075 SSL_peek(SSL *s, void *buf, int num) 1076 { 1077 if (num < 0) { 1078 SSLerror(s, SSL_R_BAD_LENGTH); 1079 return -1; 1080 } 1081 1082 if (SSL_is_quic(s)) { 1083 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1084 return (-1); 1085 } 1086 1087 if (s->handshake_func == NULL) { 1088 SSLerror(s, SSL_R_UNINITIALIZED); 1089 return (-1); 1090 } 1091 1092 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1093 return (0); 1094 } 1095 return ssl3_peek(s, buf, num); 1096 } 1097 1098 int 1099 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1100 { 1101 int ret; 1102 1103 /* We simply don't bother supporting enormous peeks */ 1104 if (num > INT_MAX) { 1105 SSLerror(s, SSL_R_BAD_LENGTH); 1106 return 0; 1107 } 1108 1109 ret = SSL_peek(s, buf, (int)num); 1110 if (ret < 0) 1111 ret = 0; 1112 *bytes_peeked = ret; 1113 1114 return ret > 0; 1115 } 1116 1117 int 1118 SSL_write(SSL *s, const void *buf, int num) 1119 { 1120 if (num < 0) { 1121 SSLerror(s, SSL_R_BAD_LENGTH); 1122 return -1; 1123 } 1124 1125 if (SSL_is_quic(s)) { 1126 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1127 return (-1); 1128 } 1129 1130 if (s->handshake_func == NULL) { 1131 SSLerror(s, SSL_R_UNINITIALIZED); 1132 return (-1); 1133 } 1134 1135 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1136 s->rwstate = SSL_NOTHING; 1137 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1138 return (-1); 1139 } 1140 return ssl3_write(s, buf, num); 1141 } 1142 1143 int 1144 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1145 { 1146 int ret; 1147 1148 /* We simply don't bother supporting enormous writes */ 1149 if (num > INT_MAX) { 1150 SSLerror(s, SSL_R_BAD_LENGTH); 1151 return 0; 1152 } 1153 1154 if (num == 0) { 1155 /* This API is special */ 1156 bytes_written = 0; 1157 return 1; 1158 } 1159 1160 ret = SSL_write(s, buf, (int)num); 1161 if (ret < 0) 1162 ret = 0; 1163 *bytes_written = ret; 1164 1165 return ret > 0; 1166 } 1167 1168 uint32_t 1169 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1170 { 1171 return 0; 1172 } 1173 1174 int 1175 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1176 { 1177 return 1; 1178 } 1179 1180 uint32_t 1181 SSL_get_max_early_data(const SSL *s) 1182 { 1183 return 0; 1184 } 1185 1186 int 1187 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1188 { 1189 return 1; 1190 } 1191 1192 int 1193 SSL_get_early_data_status(const SSL *s) 1194 { 1195 return SSL_EARLY_DATA_REJECTED; 1196 } 1197 1198 int 1199 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1200 { 1201 *readbytes = 0; 1202 1203 if (!s->server) { 1204 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1205 return SSL_READ_EARLY_DATA_ERROR; 1206 } 1207 1208 return SSL_READ_EARLY_DATA_FINISH; 1209 } 1210 1211 int 1212 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1213 { 1214 *written = 0; 1215 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1216 return 0; 1217 } 1218 1219 int 1220 SSL_shutdown(SSL *s) 1221 { 1222 /* 1223 * Note that this function behaves differently from what one might 1224 * expect. Return values are 0 for no success (yet), 1225 * 1 for success; but calling it once is usually not enough, 1226 * even if blocking I/O is used (see ssl3_shutdown). 1227 */ 1228 1229 if (s->handshake_func == NULL) { 1230 SSLerror(s, SSL_R_UNINITIALIZED); 1231 return (-1); 1232 } 1233 1234 if (s != NULL && !SSL_in_init(s)) 1235 return (s->method->ssl_shutdown(s)); 1236 1237 return (1); 1238 } 1239 1240 int 1241 SSL_renegotiate(SSL *s) 1242 { 1243 if (s->renegotiate == 0) 1244 s->renegotiate = 1; 1245 1246 s->new_session = 1; 1247 1248 return (s->method->ssl_renegotiate(s)); 1249 } 1250 1251 int 1252 SSL_renegotiate_abbreviated(SSL *s) 1253 { 1254 if (s->renegotiate == 0) 1255 s->renegotiate = 1; 1256 1257 s->new_session = 0; 1258 1259 return (s->method->ssl_renegotiate(s)); 1260 } 1261 1262 int 1263 SSL_renegotiate_pending(SSL *s) 1264 { 1265 /* 1266 * Becomes true when negotiation is requested; 1267 * false again once a handshake has finished. 1268 */ 1269 return (s->renegotiate != 0); 1270 } 1271 1272 long 1273 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1274 { 1275 long l; 1276 1277 switch (cmd) { 1278 case SSL_CTRL_GET_READ_AHEAD: 1279 return (s->read_ahead); 1280 case SSL_CTRL_SET_READ_AHEAD: 1281 l = s->read_ahead; 1282 s->read_ahead = larg; 1283 return (l); 1284 1285 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1286 s->msg_callback_arg = parg; 1287 return (1); 1288 1289 case SSL_CTRL_OPTIONS: 1290 return (s->options|=larg); 1291 case SSL_CTRL_CLEAR_OPTIONS: 1292 return (s->options&=~larg); 1293 case SSL_CTRL_MODE: 1294 return (s->mode|=larg); 1295 case SSL_CTRL_CLEAR_MODE: 1296 return (s->mode &=~larg); 1297 case SSL_CTRL_GET_MAX_CERT_LIST: 1298 return (s->max_cert_list); 1299 case SSL_CTRL_SET_MAX_CERT_LIST: 1300 l = s->max_cert_list; 1301 s->max_cert_list = larg; 1302 return (l); 1303 case SSL_CTRL_SET_MTU: 1304 #ifndef OPENSSL_NO_DTLS1 1305 if (larg < (long)dtls1_min_mtu()) 1306 return (0); 1307 #endif 1308 if (SSL_is_dtls(s)) { 1309 s->d1->mtu = larg; 1310 return (larg); 1311 } 1312 return (0); 1313 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1314 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1315 return (0); 1316 s->max_send_fragment = larg; 1317 return (1); 1318 case SSL_CTRL_GET_RI_SUPPORT: 1319 if (s->s3) 1320 return (s->s3->send_connection_binding); 1321 else return (0); 1322 default: 1323 if (SSL_is_dtls(s)) 1324 return dtls1_ctrl(s, cmd, larg, parg); 1325 return ssl3_ctrl(s, cmd, larg, parg); 1326 } 1327 } 1328 1329 long 1330 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1331 { 1332 switch (cmd) { 1333 case SSL_CTRL_SET_MSG_CALLBACK: 1334 s->msg_callback = (ssl_msg_callback_fn *)(fp); 1335 return (1); 1336 1337 default: 1338 return (ssl3_callback_ctrl(s, cmd, fp)); 1339 } 1340 } 1341 1342 struct lhash_st_SSL_SESSION * 1343 SSL_CTX_sessions(SSL_CTX *ctx) 1344 { 1345 return (ctx->sessions); 1346 } 1347 1348 long 1349 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1350 { 1351 long l; 1352 1353 switch (cmd) { 1354 case SSL_CTRL_GET_READ_AHEAD: 1355 return (ctx->read_ahead); 1356 case SSL_CTRL_SET_READ_AHEAD: 1357 l = ctx->read_ahead; 1358 ctx->read_ahead = larg; 1359 return (l); 1360 1361 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1362 ctx->msg_callback_arg = parg; 1363 return (1); 1364 1365 case SSL_CTRL_GET_MAX_CERT_LIST: 1366 return (ctx->max_cert_list); 1367 case SSL_CTRL_SET_MAX_CERT_LIST: 1368 l = ctx->max_cert_list; 1369 ctx->max_cert_list = larg; 1370 return (l); 1371 1372 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1373 l = ctx->session_cache_size; 1374 ctx->session_cache_size = larg; 1375 return (l); 1376 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1377 return (ctx->session_cache_size); 1378 case SSL_CTRL_SET_SESS_CACHE_MODE: 1379 l = ctx->session_cache_mode; 1380 ctx->session_cache_mode = larg; 1381 return (l); 1382 case SSL_CTRL_GET_SESS_CACHE_MODE: 1383 return (ctx->session_cache_mode); 1384 1385 case SSL_CTRL_SESS_NUMBER: 1386 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1387 case SSL_CTRL_SESS_CONNECT: 1388 return (ctx->stats.sess_connect); 1389 case SSL_CTRL_SESS_CONNECT_GOOD: 1390 return (ctx->stats.sess_connect_good); 1391 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1392 return (ctx->stats.sess_connect_renegotiate); 1393 case SSL_CTRL_SESS_ACCEPT: 1394 return (ctx->stats.sess_accept); 1395 case SSL_CTRL_SESS_ACCEPT_GOOD: 1396 return (ctx->stats.sess_accept_good); 1397 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1398 return (ctx->stats.sess_accept_renegotiate); 1399 case SSL_CTRL_SESS_HIT: 1400 return (ctx->stats.sess_hit); 1401 case SSL_CTRL_SESS_CB_HIT: 1402 return (ctx->stats.sess_cb_hit); 1403 case SSL_CTRL_SESS_MISSES: 1404 return (ctx->stats.sess_miss); 1405 case SSL_CTRL_SESS_TIMEOUTS: 1406 return (ctx->stats.sess_timeout); 1407 case SSL_CTRL_SESS_CACHE_FULL: 1408 return (ctx->stats.sess_cache_full); 1409 case SSL_CTRL_OPTIONS: 1410 return (ctx->options|=larg); 1411 case SSL_CTRL_CLEAR_OPTIONS: 1412 return (ctx->options&=~larg); 1413 case SSL_CTRL_MODE: 1414 return (ctx->mode|=larg); 1415 case SSL_CTRL_CLEAR_MODE: 1416 return (ctx->mode&=~larg); 1417 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1418 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1419 return (0); 1420 ctx->max_send_fragment = larg; 1421 return (1); 1422 default: 1423 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1424 } 1425 } 1426 1427 long 1428 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1429 { 1430 switch (cmd) { 1431 case SSL_CTRL_SET_MSG_CALLBACK: 1432 ctx->msg_callback = (ssl_msg_callback_fn *)fp; 1433 return (1); 1434 1435 default: 1436 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1437 } 1438 } 1439 1440 int 1441 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1442 { 1443 long l; 1444 1445 l = a->id - b->id; 1446 if (l == 0L) 1447 return (0); 1448 else 1449 return ((l > 0) ? 1:-1); 1450 } 1451 1452 STACK_OF(SSL_CIPHER) * 1453 SSL_get_ciphers(const SSL *s) 1454 { 1455 if (s == NULL) 1456 return (NULL); 1457 if (s->cipher_list != NULL) 1458 return (s->cipher_list); 1459 1460 return (s->ctx->cipher_list); 1461 } 1462 1463 STACK_OF(SSL_CIPHER) * 1464 SSL_get_client_ciphers(const SSL *s) 1465 { 1466 if (s == NULL || s->session == NULL || !s->server) 1467 return NULL; 1468 return s->session->ciphers; 1469 } 1470 1471 STACK_OF(SSL_CIPHER) * 1472 SSL_get1_supported_ciphers(SSL *s) 1473 { 1474 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1475 SSL_CIPHER *cipher; 1476 uint16_t min_vers, max_vers; 1477 int i; 1478 1479 if (s == NULL) 1480 return NULL; 1481 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1482 return NULL; 1483 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1484 return NULL; 1485 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1486 return NULL; 1487 1488 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1489 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1490 goto err; 1491 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1492 max_vers)) 1493 continue; 1494 if (!ssl_security_supported_cipher(s, cipher)) 1495 continue; 1496 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1497 goto err; 1498 } 1499 1500 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1501 return supported_ciphers; 1502 1503 err: 1504 sk_SSL_CIPHER_free(supported_ciphers); 1505 return NULL; 1506 } 1507 1508 /* See if we have any ECC cipher suites. */ 1509 int 1510 ssl_has_ecc_ciphers(SSL *s) 1511 { 1512 STACK_OF(SSL_CIPHER) *ciphers; 1513 unsigned long alg_k, alg_a; 1514 SSL_CIPHER *cipher; 1515 int i; 1516 1517 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1518 return 0; 1519 1520 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1521 cipher = sk_SSL_CIPHER_value(ciphers, i); 1522 1523 alg_k = cipher->algorithm_mkey; 1524 alg_a = cipher->algorithm_auth; 1525 1526 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1527 return 1; 1528 } 1529 1530 return 0; 1531 } 1532 1533 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1534 const char * 1535 SSL_get_cipher_list(const SSL *s, int n) 1536 { 1537 STACK_OF(SSL_CIPHER) *ciphers; 1538 const SSL_CIPHER *cipher; 1539 1540 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1541 return (NULL); 1542 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1543 return (NULL); 1544 1545 return (cipher->name); 1546 } 1547 1548 STACK_OF(SSL_CIPHER) * 1549 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1550 { 1551 if (ctx == NULL) 1552 return NULL; 1553 return ctx->cipher_list; 1554 } 1555 1556 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1557 int 1558 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1559 { 1560 STACK_OF(SSL_CIPHER) *ciphers; 1561 1562 /* 1563 * ssl_create_cipher_list may return an empty stack if it was unable to 1564 * find a cipher matching the given rule string (for example if the 1565 * rule string specifies a cipher which has been disabled). This is not 1566 * an error as far as ssl_create_cipher_list is concerned, and hence 1567 * ctx->cipher_list has been updated. 1568 */ 1569 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1570 ctx->cipher_list_tls13, str, ctx->cert); 1571 if (ciphers == NULL) { 1572 return (0); 1573 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1574 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1575 return (0); 1576 } 1577 return (1); 1578 } 1579 1580 int 1581 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1582 { 1583 if (!ssl_parse_ciphersuites(&ctx->cipher_list_tls13, str)) { 1584 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1585 return 0; 1586 } 1587 if (!ssl_merge_cipherlists(ctx->cipher_list, 1588 ctx->cipher_list_tls13, &ctx->cipher_list)) 1589 return 0; 1590 1591 return 1; 1592 } 1593 1594 /* Specify the ciphers to be used by the SSL. */ 1595 int 1596 SSL_set_cipher_list(SSL *s, const char *str) 1597 { 1598 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1599 1600 if ((ciphers_tls13 = s->cipher_list_tls13) == NULL) 1601 ciphers_tls13 = s->ctx->cipher_list_tls13; 1602 1603 /* See comment in SSL_CTX_set_cipher_list. */ 1604 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1605 ciphers_tls13, str, s->cert); 1606 if (ciphers == NULL) { 1607 return (0); 1608 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1609 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1610 return (0); 1611 } 1612 return (1); 1613 } 1614 1615 int 1616 SSL_set_ciphersuites(SSL *s, const char *str) 1617 { 1618 STACK_OF(SSL_CIPHER) *ciphers; 1619 1620 if ((ciphers = s->cipher_list) == NULL) 1621 ciphers = s->ctx->cipher_list; 1622 1623 if (!ssl_parse_ciphersuites(&s->cipher_list_tls13, str)) { 1624 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1625 return (0); 1626 } 1627 if (!ssl_merge_cipherlists(ciphers, s->cipher_list_tls13, 1628 &s->cipher_list)) 1629 return 0; 1630 1631 return 1; 1632 } 1633 1634 char * 1635 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1636 { 1637 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1638 const SSL_CIPHER *cipher; 1639 size_t curlen = 0; 1640 char *end; 1641 int i; 1642 1643 if (!s->server || s->session == NULL || len < 2) 1644 return NULL; 1645 1646 if ((client_ciphers = s->session->ciphers) == NULL) 1647 return NULL; 1648 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1649 return NULL; 1650 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1651 sk_SSL_CIPHER_num(server_ciphers) == 0) 1652 return NULL; 1653 1654 buf[0] = '\0'; 1655 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1656 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1657 1658 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1659 continue; 1660 1661 end = buf + curlen; 1662 if (strlcat(buf, cipher->name, len) >= len || 1663 (curlen = strlcat(buf, ":", len)) >= len) { 1664 /* remove truncated cipher from list */ 1665 *end = '\0'; 1666 break; 1667 } 1668 } 1669 /* remove trailing colon */ 1670 if ((end = strrchr(buf, ':')) != NULL) 1671 *end = '\0'; 1672 return buf; 1673 } 1674 1675 /* 1676 * Return a servername extension value if provided in Client Hello, or NULL. 1677 * So far, only host_name types are defined (RFC 3546). 1678 */ 1679 const char * 1680 SSL_get_servername(const SSL *s, const int type) 1681 { 1682 if (type != TLSEXT_NAMETYPE_host_name) 1683 return (NULL); 1684 1685 return (s->session && !s->tlsext_hostname ? 1686 s->session->tlsext_hostname : 1687 s->tlsext_hostname); 1688 } 1689 1690 int 1691 SSL_get_servername_type(const SSL *s) 1692 { 1693 if (s->session && 1694 (!s->tlsext_hostname ? 1695 s->session->tlsext_hostname : s->tlsext_hostname)) 1696 return (TLSEXT_NAMETYPE_host_name); 1697 return (-1); 1698 } 1699 1700 /* 1701 * SSL_select_next_proto implements standard protocol selection. It is 1702 * expected that this function is called from the callback set by 1703 * SSL_CTX_set_alpn_select_cb. 1704 * 1705 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1706 * strings. The length byte itself is not included in the length. A byte 1707 * string of length 0 is invalid. No byte string may be truncated. 1708 * 1709 * It returns either: 1710 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1711 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1712 */ 1713 int 1714 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1715 const unsigned char *server, unsigned int server_len, 1716 const unsigned char *client, unsigned int client_len) 1717 { 1718 unsigned int i, j; 1719 const unsigned char *result; 1720 int status = OPENSSL_NPN_UNSUPPORTED; 1721 1722 /* 1723 * For each protocol in server preference order, 1724 * see if we support it. 1725 */ 1726 for (i = 0; i < server_len; ) { 1727 for (j = 0; j < client_len; ) { 1728 if (server[i] == client[j] && 1729 memcmp(&server[i + 1], 1730 &client[j + 1], server[i]) == 0) { 1731 /* We found a match */ 1732 result = &server[i]; 1733 status = OPENSSL_NPN_NEGOTIATED; 1734 goto found; 1735 } 1736 j += client[j]; 1737 j++; 1738 } 1739 i += server[i]; 1740 i++; 1741 } 1742 1743 /* There's no overlap between our protocols and the server's list. */ 1744 result = client; 1745 status = OPENSSL_NPN_NO_OVERLAP; 1746 1747 found: 1748 *out = (unsigned char *) result + 1; 1749 *outlen = result[0]; 1750 return (status); 1751 } 1752 1753 /* SSL_get0_next_proto_negotiated is deprecated. */ 1754 void 1755 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1756 unsigned int *len) 1757 { 1758 *data = NULL; 1759 *len = 0; 1760 } 1761 1762 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1763 void 1764 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1765 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1766 { 1767 } 1768 1769 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1770 void 1771 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1772 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1773 unsigned int inlen, void *arg), void *arg) 1774 { 1775 } 1776 1777 /* 1778 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1779 * protocols, which must be in wire-format (i.e. a series of non-empty, 1780 * 8-bit length-prefixed strings). Returns 0 on success. 1781 */ 1782 int 1783 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1784 unsigned int protos_len) 1785 { 1786 CBS cbs; 1787 int failed = 1; 1788 1789 if (protos == NULL) 1790 protos_len = 0; 1791 1792 CBS_init(&cbs, protos, protos_len); 1793 1794 if (protos_len > 0) { 1795 if (!tlsext_alpn_check_format(&cbs)) 1796 goto err; 1797 } 1798 1799 if (!CBS_stow(&cbs, &ctx->alpn_client_proto_list, 1800 &ctx->alpn_client_proto_list_len)) 1801 goto err; 1802 1803 failed = 0; 1804 1805 err: 1806 /* NOTE: Return values are the reverse of what you expect. */ 1807 return failed; 1808 } 1809 1810 /* 1811 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1812 * protocols, which must be in wire-format (i.e. a series of non-empty, 1813 * 8-bit length-prefixed strings). Returns 0 on success. 1814 */ 1815 int 1816 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1817 unsigned int protos_len) 1818 { 1819 CBS cbs; 1820 int failed = 1; 1821 1822 if (protos == NULL) 1823 protos_len = 0; 1824 1825 CBS_init(&cbs, protos, protos_len); 1826 1827 if (protos_len > 0) { 1828 if (!tlsext_alpn_check_format(&cbs)) 1829 goto err; 1830 } 1831 1832 if (!CBS_stow(&cbs, &ssl->alpn_client_proto_list, 1833 &ssl->alpn_client_proto_list_len)) 1834 goto err; 1835 1836 failed = 0; 1837 1838 err: 1839 /* NOTE: Return values are the reverse of what you expect. */ 1840 return failed; 1841 } 1842 1843 /* 1844 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1845 * ClientHello processing in order to select an ALPN protocol from the 1846 * client's list of offered protocols. 1847 */ 1848 void 1849 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1850 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1851 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1852 { 1853 ctx->alpn_select_cb = cb; 1854 ctx->alpn_select_cb_arg = arg; 1855 } 1856 1857 /* 1858 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1859 * it sets data to point to len bytes of protocol name (not including the 1860 * leading length-prefix byte). If the server didn't respond with* a negotiated 1861 * protocol then len will be zero. 1862 */ 1863 void 1864 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1865 unsigned int *len) 1866 { 1867 *data = ssl->s3->alpn_selected; 1868 *len = ssl->s3->alpn_selected_len; 1869 } 1870 1871 void 1872 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1873 { 1874 return; 1875 } 1876 1877 int 1878 SSL_export_keying_material(SSL *s, unsigned char *out, size_t out_len, 1879 const char *label, size_t label_len, const unsigned char *context, 1880 size_t context_len, int use_context) 1881 { 1882 if (s->tls13 != NULL && s->version == TLS1_3_VERSION) { 1883 if (!use_context) { 1884 context = NULL; 1885 context_len = 0; 1886 } 1887 return tls13_exporter(s->tls13, label, label_len, context, 1888 context_len, out, out_len); 1889 } 1890 1891 return tls12_exporter(s, label, label_len, context, context_len, 1892 use_context, out, out_len); 1893 } 1894 1895 static unsigned long 1896 ssl_session_hash(const SSL_SESSION *a) 1897 { 1898 unsigned long l; 1899 1900 l = (unsigned long) 1901 ((unsigned int) a->session_id[0] )| 1902 ((unsigned int) a->session_id[1]<< 8L)| 1903 ((unsigned long)a->session_id[2]<<16L)| 1904 ((unsigned long)a->session_id[3]<<24L); 1905 return (l); 1906 } 1907 1908 /* 1909 * NB: If this function (or indeed the hash function which uses a sort of 1910 * coarser function than this one) is changed, ensure 1911 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1912 * able to construct an SSL_SESSION that will collide with any existing session 1913 * with a matching session ID. 1914 */ 1915 static int 1916 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1917 { 1918 if (a->ssl_version != b->ssl_version) 1919 return (1); 1920 if (a->session_id_length != b->session_id_length) 1921 return (1); 1922 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1923 return (1); 1924 return (0); 1925 } 1926 1927 /* 1928 * These wrapper functions should remain rather than redeclaring 1929 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1930 * variable. The reason is that the functions aren't static, they're exposed via 1931 * ssl.h. 1932 */ 1933 static unsigned long 1934 ssl_session_LHASH_HASH(const void *arg) 1935 { 1936 const SSL_SESSION *a = arg; 1937 1938 return ssl_session_hash(a); 1939 } 1940 1941 static int 1942 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1943 { 1944 const SSL_SESSION *a = arg1; 1945 const SSL_SESSION *b = arg2; 1946 1947 return ssl_session_cmp(a, b); 1948 } 1949 1950 SSL_CTX * 1951 SSL_CTX_new(const SSL_METHOD *meth) 1952 { 1953 SSL_CTX *ret; 1954 1955 if (!OPENSSL_init_ssl(0, NULL)) { 1956 SSLerrorx(SSL_R_LIBRARY_BUG); 1957 return (NULL); 1958 } 1959 1960 if (meth == NULL) { 1961 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1962 return (NULL); 1963 } 1964 1965 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1966 SSLerrorx(ERR_R_MALLOC_FAILURE); 1967 return (NULL); 1968 } 1969 1970 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1971 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1972 goto err; 1973 } 1974 1975 ret->method = meth; 1976 ret->min_tls_version = meth->min_tls_version; 1977 ret->max_tls_version = meth->max_tls_version; 1978 ret->min_proto_version = 0; 1979 ret->max_proto_version = 0; 1980 ret->mode = SSL_MODE_AUTO_RETRY; 1981 1982 ret->cert_store = NULL; 1983 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1984 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1985 ret->session_cache_head = NULL; 1986 ret->session_cache_tail = NULL; 1987 1988 /* We take the system default */ 1989 ret->session_timeout = ssl_get_default_timeout(); 1990 1991 ret->new_session_cb = 0; 1992 ret->remove_session_cb = 0; 1993 ret->get_session_cb = 0; 1994 ret->generate_session_id = 0; 1995 1996 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1997 1998 ret->references = 1; 1999 ret->quiet_shutdown = 0; 2000 2001 ret->info_callback = NULL; 2002 2003 ret->app_verify_callback = 0; 2004 ret->app_verify_arg = NULL; 2005 2006 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 2007 ret->read_ahead = 0; 2008 ret->msg_callback = 0; 2009 ret->msg_callback_arg = NULL; 2010 ret->verify_mode = SSL_VERIFY_NONE; 2011 ret->sid_ctx_length = 0; 2012 ret->default_verify_callback = NULL; 2013 2014 if ((ret->cert = ssl_cert_new()) == NULL) 2015 goto err; 2016 2017 ret->default_passwd_callback = 0; 2018 ret->default_passwd_callback_userdata = NULL; 2019 ret->client_cert_cb = 0; 2020 ret->app_gen_cookie_cb = 0; 2021 ret->app_verify_cookie_cb = 0; 2022 2023 ret->sessions = lh_SSL_SESSION_new(); 2024 if (ret->sessions == NULL) 2025 goto err; 2026 ret->cert_store = X509_STORE_new(); 2027 if (ret->cert_store == NULL) 2028 goto err; 2029 2030 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2031 NULL, SSL_DEFAULT_CIPHER_LIST, ret->cert); 2032 if (ret->cipher_list == NULL || 2033 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2034 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2035 goto err2; 2036 } 2037 2038 ret->param = X509_VERIFY_PARAM_new(); 2039 if (!ret->param) 2040 goto err; 2041 2042 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 2043 goto err; 2044 2045 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 2046 2047 ret->extra_certs = NULL; 2048 2049 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2050 2051 ret->tlsext_servername_callback = 0; 2052 ret->tlsext_servername_arg = NULL; 2053 2054 /* Setup RFC4507 ticket keys */ 2055 arc4random_buf(ret->tlsext_tick_key_name, 16); 2056 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 2057 arc4random_buf(ret->tlsext_tick_aes_key, 16); 2058 2059 ret->tlsext_status_cb = 0; 2060 ret->tlsext_status_arg = NULL; 2061 2062 #ifndef OPENSSL_NO_ENGINE 2063 ret->client_cert_engine = NULL; 2064 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2065 #define eng_strx(x) #x 2066 #define eng_str(x) eng_strx(x) 2067 /* Use specific client engine automatically... ignore errors */ 2068 { 2069 ENGINE *eng; 2070 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2071 if (!eng) { 2072 ERR_clear_error(); 2073 ENGINE_load_builtin_engines(); 2074 eng = ENGINE_by_id(eng_str( 2075 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2076 } 2077 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2078 ERR_clear_error(); 2079 } 2080 #endif 2081 #endif 2082 /* 2083 * Default is to connect to non-RI servers. When RI is more widely 2084 * deployed might change this. 2085 */ 2086 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2087 2088 return (ret); 2089 err: 2090 SSLerrorx(ERR_R_MALLOC_FAILURE); 2091 err2: 2092 SSL_CTX_free(ret); 2093 return (NULL); 2094 } 2095 2096 void 2097 SSL_CTX_free(SSL_CTX *ctx) 2098 { 2099 int i; 2100 2101 if (ctx == NULL) 2102 return; 2103 2104 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2105 if (i > 0) 2106 return; 2107 2108 X509_VERIFY_PARAM_free(ctx->param); 2109 2110 /* 2111 * Free internal session cache. However: the remove_cb() may reference 2112 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2113 * after the sessions were flushed. 2114 * As the ex_data handling routines might also touch the session cache, 2115 * the most secure solution seems to be: empty (flush) the cache, then 2116 * free ex_data, then finally free the cache. 2117 * (See ticket [openssl.org #212].) 2118 */ 2119 if (ctx->sessions != NULL) 2120 SSL_CTX_flush_sessions(ctx, 0); 2121 2122 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->ex_data); 2123 2124 lh_SSL_SESSION_free(ctx->sessions); 2125 2126 X509_STORE_free(ctx->cert_store); 2127 sk_SSL_CIPHER_free(ctx->cipher_list); 2128 sk_SSL_CIPHER_free(ctx->cipher_list_tls13); 2129 ssl_cert_free(ctx->cert); 2130 sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free); 2131 sk_X509_pop_free(ctx->extra_certs, X509_free); 2132 2133 #ifndef OPENSSL_NO_SRTP 2134 if (ctx->srtp_profiles) 2135 sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles); 2136 #endif 2137 2138 #ifndef OPENSSL_NO_ENGINE 2139 ENGINE_finish(ctx->client_cert_engine); 2140 #endif 2141 2142 free(ctx->tlsext_ecpointformatlist); 2143 free(ctx->tlsext_supportedgroups); 2144 2145 free(ctx->alpn_client_proto_list); 2146 2147 free(ctx); 2148 } 2149 2150 int 2151 SSL_CTX_up_ref(SSL_CTX *ctx) 2152 { 2153 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2154 return ((refs > 1) ? 1 : 0); 2155 } 2156 2157 pem_password_cb * 2158 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2159 { 2160 return (ctx->default_passwd_callback); 2161 } 2162 2163 void 2164 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2165 { 2166 ctx->default_passwd_callback = cb; 2167 } 2168 2169 void * 2170 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2171 { 2172 return ctx->default_passwd_callback_userdata; 2173 } 2174 2175 void 2176 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2177 { 2178 ctx->default_passwd_callback_userdata = u; 2179 } 2180 2181 void 2182 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2183 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2184 { 2185 ctx->app_verify_callback = cb; 2186 ctx->app_verify_arg = arg; 2187 } 2188 2189 void 2190 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2191 { 2192 ctx->verify_mode = mode; 2193 ctx->default_verify_callback = cb; 2194 } 2195 2196 void 2197 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2198 { 2199 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2200 } 2201 2202 void 2203 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2204 { 2205 unsigned long mask_a, mask_k; 2206 SSL_CERT_PKEY *cpk; 2207 2208 if (c == NULL) 2209 return; 2210 2211 mask_a = SSL_aNULL | SSL_aTLS1_3; 2212 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2213 2214 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2215 c->dhe_params_auto != 0) 2216 mask_k |= SSL_kDHE; 2217 2218 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2219 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2220 /* Key usage, if present, must allow signing. */ 2221 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2222 mask_a |= SSL_aECDSA; 2223 } 2224 2225 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2226 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2227 mask_k |= SSL_kGOST; 2228 mask_a |= SSL_aGOST01; 2229 } 2230 2231 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2232 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2233 mask_a |= SSL_aRSA; 2234 mask_k |= SSL_kRSA; 2235 } 2236 2237 c->mask_k = mask_k; 2238 c->mask_a = mask_a; 2239 c->valid = 1; 2240 } 2241 2242 /* See if this handshake is using an ECC cipher suite. */ 2243 int 2244 ssl_using_ecc_cipher(SSL *s) 2245 { 2246 unsigned long alg_a, alg_k; 2247 2248 alg_a = s->s3->hs.cipher->algorithm_auth; 2249 alg_k = s->s3->hs.cipher->algorithm_mkey; 2250 2251 return s->session->tlsext_ecpointformatlist != NULL && 2252 s->session->tlsext_ecpointformatlist_length > 0 && 2253 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2254 } 2255 2256 int 2257 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2258 { 2259 const SSL_CIPHER *cs = s->s3->hs.cipher; 2260 unsigned long alg_a; 2261 2262 alg_a = cs->algorithm_auth; 2263 2264 if (alg_a & SSL_aECDSA) { 2265 /* Key usage, if present, must allow signing. */ 2266 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2267 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2268 return (0); 2269 } 2270 } 2271 2272 return (1); 2273 } 2274 2275 SSL_CERT_PKEY * 2276 ssl_get_server_send_pkey(const SSL *s) 2277 { 2278 unsigned long alg_a; 2279 SSL_CERT *c; 2280 int i; 2281 2282 c = s->cert; 2283 ssl_set_cert_masks(c, s->s3->hs.cipher); 2284 2285 alg_a = s->s3->hs.cipher->algorithm_auth; 2286 2287 if (alg_a & SSL_aECDSA) { 2288 i = SSL_PKEY_ECC; 2289 } else if (alg_a & SSL_aRSA) { 2290 i = SSL_PKEY_RSA; 2291 } else if (alg_a & SSL_aGOST01) { 2292 i = SSL_PKEY_GOST01; 2293 } else { /* if (alg_a & SSL_aNULL) */ 2294 SSLerror(s, ERR_R_INTERNAL_ERROR); 2295 return (NULL); 2296 } 2297 2298 return (c->pkeys + i); 2299 } 2300 2301 EVP_PKEY * 2302 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2303 const struct ssl_sigalg **sap) 2304 { 2305 const struct ssl_sigalg *sigalg = NULL; 2306 EVP_PKEY *pkey = NULL; 2307 unsigned long alg_a; 2308 SSL_CERT *c; 2309 int idx = -1; 2310 2311 alg_a = cipher->algorithm_auth; 2312 c = s->cert; 2313 2314 if (alg_a & SSL_aRSA) { 2315 idx = SSL_PKEY_RSA; 2316 } else if ((alg_a & SSL_aECDSA) && 2317 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2318 idx = SSL_PKEY_ECC; 2319 if (idx == -1) { 2320 SSLerror(s, ERR_R_INTERNAL_ERROR); 2321 return (NULL); 2322 } 2323 2324 pkey = c->pkeys[idx].privatekey; 2325 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2326 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2327 return (NULL); 2328 } 2329 *pmd = sigalg->md(); 2330 *sap = sigalg; 2331 2332 return (pkey); 2333 } 2334 2335 size_t 2336 ssl_dhe_params_auto_key_bits(SSL *s) 2337 { 2338 SSL_CERT_PKEY *cpk; 2339 int key_bits; 2340 2341 if (s->cert->dhe_params_auto == 2) { 2342 key_bits = 1024; 2343 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2344 key_bits = 1024; 2345 if (s->s3->hs.cipher->strength_bits == 256) 2346 key_bits = 3072; 2347 } else { 2348 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2349 return 0; 2350 if (cpk->privatekey == NULL || 2351 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2352 return 0; 2353 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2354 return 0; 2355 } 2356 2357 return key_bits; 2358 } 2359 2360 static int 2361 ssl_should_update_external_cache(SSL *s, int mode) 2362 { 2363 int cache_mode; 2364 2365 cache_mode = s->session_ctx->session_cache_mode; 2366 2367 /* Don't cache if mode says not to */ 2368 if ((cache_mode & mode) == 0) 2369 return 0; 2370 2371 /* if it is not already cached, cache it */ 2372 if (!s->hit) 2373 return 1; 2374 2375 /* If it's TLS 1.3, do it to match OpenSSL */ 2376 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2377 return 1; 2378 2379 return 0; 2380 } 2381 2382 static int 2383 ssl_should_update_internal_cache(SSL *s, int mode) 2384 { 2385 int cache_mode; 2386 2387 cache_mode = s->session_ctx->session_cache_mode; 2388 2389 /* Don't cache if mode says not to */ 2390 if ((cache_mode & mode) == 0) 2391 return 0; 2392 2393 /* If it is already cached, don't cache it again */ 2394 if (s->hit) 2395 return 0; 2396 2397 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2398 return 0; 2399 2400 /* If we are lesser than TLS 1.3, Cache it. */ 2401 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2402 return 1; 2403 2404 /* Below this we consider TLS 1.3 or later */ 2405 2406 /* If it's not a server, add it? OpenSSL does this. */ 2407 if (!s->server) 2408 return 1; 2409 2410 /* XXX if we support early data / PSK need to add */ 2411 2412 /* 2413 * If we have the remove session callback, we will want 2414 * to know about this even if it's a stateless ticket 2415 * from 1.3 so we can know when it is removed. 2416 */ 2417 if (s->session_ctx->remove_session_cb != NULL) 2418 return 1; 2419 2420 /* If we have set OP_NO_TICKET, cache it. */ 2421 if ((s->options & SSL_OP_NO_TICKET) != 0) 2422 return 1; 2423 2424 /* Otherwise do not cache */ 2425 return 0; 2426 } 2427 2428 void 2429 ssl_update_cache(SSL *s, int mode) 2430 { 2431 int cache_mode, do_callback; 2432 2433 if (s->session->session_id_length == 0) 2434 return; 2435 2436 cache_mode = s->session_ctx->session_cache_mode; 2437 do_callback = ssl_should_update_external_cache(s, mode); 2438 2439 if (ssl_should_update_internal_cache(s, mode)) { 2440 /* 2441 * XXX should we fail if the add to the internal cache 2442 * fails? OpenSSL doesn't care.. 2443 */ 2444 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2445 } 2446 2447 /* 2448 * Update the "external cache" by calling the new session 2449 * callback if present, even with TLS 1.3 without early data 2450 * "because some application just want to know about the 2451 * creation of a session and aren't doing a full cache". 2452 * Apparently, if they are doing a full cache, they'll have 2453 * some fun, but we endeavour to give application writers the 2454 * same glorious experience they expect from OpenSSL which 2455 * does it this way. 2456 */ 2457 if (do_callback && s->session_ctx->new_session_cb != NULL) { 2458 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2459 if (!s->session_ctx->new_session_cb(s, s->session)) 2460 SSL_SESSION_free(s->session); 2461 } 2462 2463 /* Auto flush every 255 connections. */ 2464 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2465 (cache_mode & mode) != 0) { 2466 int connections; 2467 if (mode & SSL_SESS_CACHE_CLIENT) 2468 connections = s->session_ctx->stats.sess_connect_good; 2469 else 2470 connections = s->session_ctx->stats.sess_accept_good; 2471 if ((connections & 0xff) == 0xff) 2472 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2473 } 2474 } 2475 2476 const SSL_METHOD * 2477 SSL_get_ssl_method(SSL *s) 2478 { 2479 return (s->method); 2480 } 2481 2482 int 2483 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2484 { 2485 int (*handshake_func)(SSL *) = NULL; 2486 int ret = 1; 2487 2488 if (s->method == method) 2489 return (ret); 2490 2491 if (s->handshake_func == s->method->ssl_connect) 2492 handshake_func = method->ssl_connect; 2493 else if (s->handshake_func == s->method->ssl_accept) 2494 handshake_func = method->ssl_accept; 2495 2496 if (s->method->version == method->version) { 2497 s->method = method; 2498 } else { 2499 s->method->ssl_free(s); 2500 s->method = method; 2501 ret = s->method->ssl_new(s); 2502 } 2503 s->handshake_func = handshake_func; 2504 2505 return (ret); 2506 } 2507 2508 int 2509 SSL_get_error(const SSL *s, int i) 2510 { 2511 unsigned long l; 2512 int reason; 2513 BIO *bio; 2514 2515 if (i > 0) 2516 return (SSL_ERROR_NONE); 2517 2518 /* 2519 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2520 * etc, where we do encode the error. 2521 */ 2522 if ((l = ERR_peek_error()) != 0) { 2523 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2524 return (SSL_ERROR_SYSCALL); 2525 else 2526 return (SSL_ERROR_SSL); 2527 } 2528 2529 if (SSL_want_read(s)) { 2530 bio = SSL_get_rbio(s); 2531 if (BIO_should_read(bio)) { 2532 return (SSL_ERROR_WANT_READ); 2533 } else if (BIO_should_write(bio)) { 2534 /* 2535 * This one doesn't make too much sense... We never 2536 * try to write to the rbio, and an application 2537 * program where rbio and wbio are separate couldn't 2538 * even know what it should wait for. However if we 2539 * ever set s->rwstate incorrectly (so that we have 2540 * SSL_want_read(s) instead of SSL_want_write(s)) 2541 * and rbio and wbio *are* the same, this test works 2542 * around that bug; so it might be safer to keep it. 2543 */ 2544 return (SSL_ERROR_WANT_WRITE); 2545 } else if (BIO_should_io_special(bio)) { 2546 reason = BIO_get_retry_reason(bio); 2547 if (reason == BIO_RR_CONNECT) 2548 return (SSL_ERROR_WANT_CONNECT); 2549 else if (reason == BIO_RR_ACCEPT) 2550 return (SSL_ERROR_WANT_ACCEPT); 2551 else 2552 return (SSL_ERROR_SYSCALL); /* unknown */ 2553 } 2554 } 2555 2556 if (SSL_want_write(s)) { 2557 bio = SSL_get_wbio(s); 2558 if (BIO_should_write(bio)) { 2559 return (SSL_ERROR_WANT_WRITE); 2560 } else if (BIO_should_read(bio)) { 2561 /* 2562 * See above (SSL_want_read(s) with 2563 * BIO_should_write(bio)) 2564 */ 2565 return (SSL_ERROR_WANT_READ); 2566 } else if (BIO_should_io_special(bio)) { 2567 reason = BIO_get_retry_reason(bio); 2568 if (reason == BIO_RR_CONNECT) 2569 return (SSL_ERROR_WANT_CONNECT); 2570 else if (reason == BIO_RR_ACCEPT) 2571 return (SSL_ERROR_WANT_ACCEPT); 2572 else 2573 return (SSL_ERROR_SYSCALL); 2574 } 2575 } 2576 2577 if (SSL_want_x509_lookup(s)) 2578 return (SSL_ERROR_WANT_X509_LOOKUP); 2579 2580 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2581 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2582 return (SSL_ERROR_ZERO_RETURN); 2583 2584 return (SSL_ERROR_SYSCALL); 2585 } 2586 2587 int 2588 SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method) 2589 { 2590 if (ctx->method->dtls) 2591 return 0; 2592 2593 ctx->quic_method = quic_method; 2594 2595 return 1; 2596 } 2597 2598 int 2599 SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method) 2600 { 2601 if (ssl->method->dtls) 2602 return 0; 2603 2604 ssl->quic_method = quic_method; 2605 2606 return 1; 2607 } 2608 2609 size_t 2610 SSL_quic_max_handshake_flight_len(const SSL *ssl, 2611 enum ssl_encryption_level_t level) 2612 { 2613 size_t flight_len; 2614 2615 /* Limit flights to 16K when there are no large certificate messages. */ 2616 flight_len = 16384; 2617 2618 switch (level) { 2619 case ssl_encryption_initial: 2620 return flight_len; 2621 2622 case ssl_encryption_early_data: 2623 /* QUIC does not send EndOfEarlyData. */ 2624 return 0; 2625 2626 case ssl_encryption_handshake: 2627 if (ssl->server) { 2628 /* 2629 * Servers may receive Certificate message if configured 2630 * to request client certificates. 2631 */ 2632 if ((SSL_get_verify_mode(ssl) & SSL_VERIFY_PEER) != 0 && 2633 ssl->max_cert_list > flight_len) 2634 flight_len = ssl->max_cert_list; 2635 } else { 2636 /* 2637 * Clients may receive both Certificate message and a 2638 * CertificateRequest message. 2639 */ 2640 if (ssl->max_cert_list * 2 > flight_len) 2641 flight_len = ssl->max_cert_list * 2; 2642 } 2643 return flight_len; 2644 case ssl_encryption_application: 2645 /* 2646 * Note there is not actually a bound on the number of 2647 * NewSessionTickets one may send in a row. This level may need 2648 * more involved flow control. 2649 */ 2650 return flight_len; 2651 } 2652 2653 return 0; 2654 } 2655 2656 enum ssl_encryption_level_t 2657 SSL_quic_read_level(const SSL *ssl) 2658 { 2659 return ssl->s3->hs.tls13.quic_read_level; 2660 } 2661 2662 enum ssl_encryption_level_t 2663 SSL_quic_write_level(const SSL *ssl) 2664 { 2665 return ssl->s3->hs.tls13.quic_write_level; 2666 } 2667 2668 int 2669 SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level, 2670 const uint8_t *data, size_t len) 2671 { 2672 if (!SSL_is_quic(ssl)) { 2673 SSLerror(ssl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2674 return 0; 2675 } 2676 2677 if (level != SSL_quic_read_level(ssl)) { 2678 SSLerror(ssl, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED); 2679 return 0; 2680 } 2681 2682 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2683 ssl->s3->hs.tls13.quic_read_buffer = tls_buffer_new(0); 2684 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2685 SSLerror(ssl, ERR_R_MALLOC_FAILURE); 2686 return 0; 2687 } 2688 } 2689 2690 /* XXX - note that this does not currently downsize. */ 2691 tls_buffer_set_capacity_limit(ssl->s3->hs.tls13.quic_read_buffer, 2692 SSL_quic_max_handshake_flight_len(ssl, level)); 2693 2694 /* 2695 * XXX - an append that fails due to exceeding capacity should set 2696 * SSL_R_EXCESSIVE_MESSAGE_SIZE. 2697 */ 2698 return tls_buffer_append(ssl->s3->hs.tls13.quic_read_buffer, data, len); 2699 } 2700 2701 int 2702 SSL_process_quic_post_handshake(SSL *ssl) 2703 { 2704 /* XXX - this needs to run PHH received. */ 2705 return 1; 2706 } 2707 2708 int 2709 SSL_do_handshake(SSL *s) 2710 { 2711 if (s->handshake_func == NULL) { 2712 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2713 return (-1); 2714 } 2715 2716 s->method->ssl_renegotiate_check(s); 2717 2718 if (!SSL_in_init(s) && !SSL_in_before(s)) 2719 return 1; 2720 2721 return s->handshake_func(s); 2722 } 2723 2724 /* 2725 * For the next 2 functions, SSL_clear() sets shutdown and so 2726 * one of these calls will reset it 2727 */ 2728 void 2729 SSL_set_accept_state(SSL *s) 2730 { 2731 s->server = 1; 2732 s->shutdown = 0; 2733 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2734 s->handshake_func = s->method->ssl_accept; 2735 ssl_clear_cipher_state(s); 2736 } 2737 2738 void 2739 SSL_set_connect_state(SSL *s) 2740 { 2741 s->server = 0; 2742 s->shutdown = 0; 2743 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2744 s->handshake_func = s->method->ssl_connect; 2745 ssl_clear_cipher_state(s); 2746 } 2747 2748 int 2749 ssl_undefined_function(SSL *s) 2750 { 2751 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2752 return (0); 2753 } 2754 2755 int 2756 ssl_undefined_void_function(void) 2757 { 2758 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2759 return (0); 2760 } 2761 2762 int 2763 ssl_undefined_const_function(const SSL *s) 2764 { 2765 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2766 return (0); 2767 } 2768 2769 const char * 2770 ssl_version_string(int ver) 2771 { 2772 switch (ver) { 2773 case TLS1_VERSION: 2774 return (SSL_TXT_TLSV1); 2775 case TLS1_1_VERSION: 2776 return (SSL_TXT_TLSV1_1); 2777 case TLS1_2_VERSION: 2778 return (SSL_TXT_TLSV1_2); 2779 case TLS1_3_VERSION: 2780 return (SSL_TXT_TLSV1_3); 2781 case DTLS1_VERSION: 2782 return (SSL_TXT_DTLS1); 2783 case DTLS1_2_VERSION: 2784 return (SSL_TXT_DTLS1_2); 2785 default: 2786 return ("unknown"); 2787 } 2788 } 2789 2790 const char * 2791 SSL_get_version(const SSL *s) 2792 { 2793 return ssl_version_string(s->version); 2794 } 2795 2796 SSL * 2797 SSL_dup(SSL *s) 2798 { 2799 STACK_OF(X509_NAME) *sk; 2800 X509_NAME *xn; 2801 SSL *ret; 2802 int i; 2803 2804 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2805 goto err; 2806 2807 ret->version = s->version; 2808 ret->method = s->method; 2809 2810 if (s->session != NULL) { 2811 if (!SSL_copy_session_id(ret, s)) 2812 goto err; 2813 } else { 2814 /* 2815 * No session has been established yet, so we have to expect 2816 * that s->cert or ret->cert will be changed later -- 2817 * they should not both point to the same object, 2818 * and thus we can't use SSL_copy_session_id. 2819 */ 2820 2821 ret->method->ssl_free(ret); 2822 ret->method = s->method; 2823 ret->method->ssl_new(ret); 2824 2825 ssl_cert_free(ret->cert); 2826 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2827 goto err; 2828 2829 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2830 s->sid_ctx_length)) 2831 goto err; 2832 } 2833 2834 ret->options = s->options; 2835 ret->mode = s->mode; 2836 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2837 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2838 ret->msg_callback = s->msg_callback; 2839 ret->msg_callback_arg = s->msg_callback_arg; 2840 SSL_set_verify(ret, SSL_get_verify_mode(s), 2841 SSL_get_verify_callback(s)); 2842 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2843 ret->generate_session_id = s->generate_session_id; 2844 2845 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2846 2847 ret->debug = s->debug; 2848 2849 /* copy app data, a little dangerous perhaps */ 2850 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2851 &ret->ex_data, &s->ex_data)) 2852 goto err; 2853 2854 /* setup rbio, and wbio */ 2855 if (s->rbio != NULL) { 2856 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2857 goto err; 2858 } 2859 if (s->wbio != NULL) { 2860 if (s->wbio != s->rbio) { 2861 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2862 goto err; 2863 } else 2864 ret->wbio = ret->rbio; 2865 } 2866 ret->rwstate = s->rwstate; 2867 ret->in_handshake = s->in_handshake; 2868 ret->handshake_func = s->handshake_func; 2869 ret->server = s->server; 2870 ret->renegotiate = s->renegotiate; 2871 ret->new_session = s->new_session; 2872 ret->quiet_shutdown = s->quiet_shutdown; 2873 ret->shutdown = s->shutdown; 2874 /* SSL_dup does not really work at any state, though */ 2875 ret->s3->hs.state = s->s3->hs.state; 2876 ret->rstate = s->rstate; 2877 2878 /* 2879 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2880 * ret->init_off 2881 */ 2882 ret->init_num = 0; 2883 2884 ret->hit = s->hit; 2885 2886 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2887 2888 if (s->cipher_list != NULL) { 2889 if ((ret->cipher_list = 2890 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2891 goto err; 2892 } 2893 if (s->cipher_list_tls13 != NULL) { 2894 if ((ret->cipher_list_tls13 = 2895 sk_SSL_CIPHER_dup(s->cipher_list_tls13)) == NULL) 2896 goto err; 2897 } 2898 2899 /* Dup the client_CA list */ 2900 if (s->client_CA != NULL) { 2901 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2902 ret->client_CA = sk; 2903 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2904 xn = sk_X509_NAME_value(sk, i); 2905 if (sk_X509_NAME_set(sk, i, 2906 X509_NAME_dup(xn)) == NULL) { 2907 X509_NAME_free(xn); 2908 goto err; 2909 } 2910 } 2911 } 2912 2913 return ret; 2914 err: 2915 SSL_free(ret); 2916 return NULL; 2917 } 2918 2919 void 2920 ssl_clear_cipher_state(SSL *s) 2921 { 2922 tls12_record_layer_clear_read_state(s->rl); 2923 tls12_record_layer_clear_write_state(s->rl); 2924 } 2925 2926 void 2927 ssl_info_callback(const SSL *s, int type, int value) 2928 { 2929 ssl_info_callback_fn *cb; 2930 2931 if ((cb = s->info_callback) == NULL) 2932 cb = s->ctx->info_callback; 2933 if (cb != NULL) 2934 cb(s, type, value); 2935 } 2936 2937 void 2938 ssl_msg_callback(SSL *s, int is_write, int content_type, 2939 const void *msg_buf, size_t msg_len) 2940 { 2941 if (s->msg_callback == NULL) 2942 return; 2943 2944 s->msg_callback(is_write, s->version, content_type, 2945 msg_buf, msg_len, s, s->msg_callback_arg); 2946 } 2947 2948 void 2949 ssl_msg_callback_cbs(SSL *s, int is_write, int content_type, CBS *cbs) 2950 { 2951 ssl_msg_callback(s, is_write, content_type, CBS_data(cbs), CBS_len(cbs)); 2952 } 2953 2954 /* Fix this function so that it takes an optional type parameter */ 2955 X509 * 2956 SSL_get_certificate(const SSL *s) 2957 { 2958 return (s->cert->key->x509); 2959 } 2960 2961 /* Fix this function so that it takes an optional type parameter */ 2962 EVP_PKEY * 2963 SSL_get_privatekey(const SSL *s) 2964 { 2965 return (s->cert->key->privatekey); 2966 } 2967 2968 const SSL_CIPHER * 2969 SSL_get_current_cipher(const SSL *s) 2970 { 2971 if ((s->session != NULL) && (s->session->cipher != NULL)) 2972 return (s->session->cipher); 2973 return (NULL); 2974 } 2975 const void * 2976 SSL_get_current_compression(SSL *s) 2977 { 2978 return (NULL); 2979 } 2980 2981 const void * 2982 SSL_get_current_expansion(SSL *s) 2983 { 2984 return (NULL); 2985 } 2986 2987 size_t 2988 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2989 { 2990 size_t len = sizeof(s->s3->client_random); 2991 2992 if (out == NULL) 2993 return len; 2994 2995 if (len > max_out) 2996 len = max_out; 2997 2998 memcpy(out, s->s3->client_random, len); 2999 3000 return len; 3001 } 3002 3003 size_t 3004 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 3005 { 3006 size_t len = sizeof(s->s3->server_random); 3007 3008 if (out == NULL) 3009 return len; 3010 3011 if (len > max_out) 3012 len = max_out; 3013 3014 memcpy(out, s->s3->server_random, len); 3015 3016 return len; 3017 } 3018 3019 int 3020 ssl_init_wbio_buffer(SSL *s, int push) 3021 { 3022 BIO *bbio; 3023 3024 if (s->bbio == NULL) { 3025 bbio = BIO_new(BIO_f_buffer()); 3026 if (bbio == NULL) 3027 return (0); 3028 s->bbio = bbio; 3029 } else { 3030 bbio = s->bbio; 3031 if (s->bbio == s->wbio) 3032 s->wbio = BIO_pop(s->wbio); 3033 } 3034 (void)BIO_reset(bbio); 3035 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3036 if (!BIO_set_read_buffer_size(bbio, 1)) { 3037 SSLerror(s, ERR_R_BUF_LIB); 3038 return (0); 3039 } 3040 if (push) { 3041 if (s->wbio != bbio) 3042 s->wbio = BIO_push(bbio, s->wbio); 3043 } else { 3044 if (s->wbio == bbio) 3045 s->wbio = BIO_pop(bbio); 3046 } 3047 return (1); 3048 } 3049 3050 void 3051 ssl_free_wbio_buffer(SSL *s) 3052 { 3053 if (s == NULL) 3054 return; 3055 3056 if (s->bbio == NULL) 3057 return; 3058 3059 if (s->bbio == s->wbio) { 3060 /* remove buffering */ 3061 s->wbio = BIO_pop(s->wbio); 3062 } 3063 BIO_free(s->bbio); 3064 s->bbio = NULL; 3065 } 3066 3067 void 3068 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3069 { 3070 ctx->quiet_shutdown = mode; 3071 } 3072 3073 int 3074 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3075 { 3076 return (ctx->quiet_shutdown); 3077 } 3078 3079 void 3080 SSL_set_quiet_shutdown(SSL *s, int mode) 3081 { 3082 s->quiet_shutdown = mode; 3083 } 3084 3085 int 3086 SSL_get_quiet_shutdown(const SSL *s) 3087 { 3088 return (s->quiet_shutdown); 3089 } 3090 3091 void 3092 SSL_set_shutdown(SSL *s, int mode) 3093 { 3094 s->shutdown = mode; 3095 } 3096 3097 int 3098 SSL_get_shutdown(const SSL *s) 3099 { 3100 return (s->shutdown); 3101 } 3102 3103 int 3104 SSL_version(const SSL *s) 3105 { 3106 return (s->version); 3107 } 3108 3109 SSL_CTX * 3110 SSL_get_SSL_CTX(const SSL *ssl) 3111 { 3112 return (ssl->ctx); 3113 } 3114 3115 SSL_CTX * 3116 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3117 { 3118 SSL_CERT *new_cert; 3119 3120 if (ctx == NULL) 3121 ctx = ssl->initial_ctx; 3122 if (ssl->ctx == ctx) 3123 return (ssl->ctx); 3124 3125 if ((new_cert = ssl_cert_dup(ctx->cert)) == NULL) 3126 return NULL; 3127 ssl_cert_free(ssl->cert); 3128 ssl->cert = new_cert; 3129 3130 SSL_CTX_up_ref(ctx); 3131 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3132 ssl->ctx = ctx; 3133 3134 return (ssl->ctx); 3135 } 3136 3137 int 3138 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3139 { 3140 return (X509_STORE_set_default_paths(ctx->cert_store)); 3141 } 3142 3143 int 3144 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3145 const char *CApath) 3146 { 3147 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3148 } 3149 3150 int 3151 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3152 { 3153 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3154 } 3155 3156 void 3157 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3158 { 3159 ssl->info_callback = cb; 3160 } 3161 3162 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3163 { 3164 return (ssl->info_callback); 3165 } 3166 3167 int 3168 SSL_state(const SSL *ssl) 3169 { 3170 return (ssl->s3->hs.state); 3171 } 3172 3173 void 3174 SSL_set_state(SSL *ssl, int state) 3175 { 3176 ssl->s3->hs.state = state; 3177 } 3178 3179 void 3180 SSL_set_verify_result(SSL *ssl, long arg) 3181 { 3182 ssl->verify_result = arg; 3183 } 3184 3185 long 3186 SSL_get_verify_result(const SSL *ssl) 3187 { 3188 return (ssl->verify_result); 3189 } 3190 3191 int 3192 SSL_verify_client_post_handshake(SSL *ssl) 3193 { 3194 return 0; 3195 } 3196 3197 void 3198 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3199 { 3200 return; 3201 } 3202 3203 void 3204 SSL_set_post_handshake_auth(SSL *ssl, int val) 3205 { 3206 return; 3207 } 3208 3209 int 3210 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3211 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3212 { 3213 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3214 new_func, dup_func, free_func)); 3215 } 3216 3217 int 3218 SSL_set_ex_data(SSL *s, int idx, void *arg) 3219 { 3220 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3221 } 3222 3223 void * 3224 SSL_get_ex_data(const SSL *s, int idx) 3225 { 3226 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3227 } 3228 3229 int 3230 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3231 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3232 { 3233 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3234 new_func, dup_func, free_func)); 3235 } 3236 3237 int 3238 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3239 { 3240 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3241 } 3242 3243 void * 3244 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3245 { 3246 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3247 } 3248 3249 int 3250 ssl_ok(SSL *s) 3251 { 3252 return (1); 3253 } 3254 3255 X509_STORE * 3256 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3257 { 3258 return (ctx->cert_store); 3259 } 3260 3261 void 3262 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3263 { 3264 X509_STORE_free(ctx->cert_store); 3265 ctx->cert_store = store; 3266 } 3267 3268 X509 * 3269 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3270 { 3271 if (ctx->cert == NULL) 3272 return NULL; 3273 3274 return ctx->cert->key->x509; 3275 } 3276 3277 EVP_PKEY * 3278 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3279 { 3280 if (ctx->cert == NULL) 3281 return NULL; 3282 3283 return ctx->cert->key->privatekey; 3284 } 3285 3286 int 3287 SSL_want(const SSL *s) 3288 { 3289 return (s->rwstate); 3290 } 3291 3292 void 3293 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3294 int keylength)) 3295 { 3296 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3297 } 3298 3299 void 3300 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3301 int keylength)) 3302 { 3303 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3304 } 3305 3306 void 3307 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3308 int keylength)) 3309 { 3310 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3311 } 3312 3313 void 3314 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3315 int keylength)) 3316 { 3317 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3318 } 3319 3320 void 3321 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3322 int is_export, int keylength)) 3323 { 3324 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3325 (void (*)(void))ecdh); 3326 } 3327 3328 void 3329 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3330 int keylength)) 3331 { 3332 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3333 } 3334 3335 3336 void 3337 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3338 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3339 { 3340 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3341 (void (*)(void))cb); 3342 } 3343 3344 void 3345 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3346 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3347 { 3348 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3349 } 3350 3351 void 3352 SSL_set_debug(SSL *s, int debug) 3353 { 3354 s->debug = debug; 3355 } 3356 3357 int 3358 SSL_cache_hit(SSL *s) 3359 { 3360 return (s->hit); 3361 } 3362 3363 int 3364 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3365 { 3366 return ctx->min_proto_version; 3367 } 3368 3369 int 3370 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3371 { 3372 return ssl_version_set_min(ctx->method, version, 3373 ctx->max_tls_version, &ctx->min_tls_version, 3374 &ctx->min_proto_version); 3375 } 3376 3377 int 3378 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3379 { 3380 return ctx->max_proto_version; 3381 } 3382 3383 int 3384 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3385 { 3386 return ssl_version_set_max(ctx->method, version, 3387 ctx->min_tls_version, &ctx->max_tls_version, 3388 &ctx->max_proto_version); 3389 } 3390 3391 int 3392 SSL_get_min_proto_version(SSL *ssl) 3393 { 3394 return ssl->min_proto_version; 3395 } 3396 3397 int 3398 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3399 { 3400 return ssl_version_set_min(ssl->method, version, 3401 ssl->max_tls_version, &ssl->min_tls_version, 3402 &ssl->min_proto_version); 3403 } 3404 int 3405 SSL_get_max_proto_version(SSL *ssl) 3406 { 3407 return ssl->max_proto_version; 3408 } 3409 3410 int 3411 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3412 { 3413 return ssl_version_set_max(ssl->method, version, 3414 ssl->min_tls_version, &ssl->max_tls_version, 3415 &ssl->max_proto_version); 3416 } 3417 3418 const SSL_METHOD * 3419 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3420 { 3421 return ctx->method; 3422 } 3423 3424 int 3425 SSL_CTX_get_security_level(const SSL_CTX *ctx) 3426 { 3427 return ctx->cert->security_level; 3428 } 3429 3430 void 3431 SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3432 { 3433 ctx->cert->security_level = level; 3434 } 3435 3436 int 3437 SSL_get_security_level(const SSL *ssl) 3438 { 3439 return ssl->cert->security_level; 3440 } 3441 3442 void 3443 SSL_set_security_level(SSL *ssl, int level) 3444 { 3445 ssl->cert->security_level = level; 3446 } 3447 3448 int 3449 SSL_is_quic(const SSL *ssl) 3450 { 3451 return ssl->quic_method != NULL; 3452 } 3453 3454 int 3455 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3456 size_t params_len) 3457 { 3458 freezero(ssl->quic_transport_params, 3459 ssl->quic_transport_params_len); 3460 ssl->quic_transport_params = NULL; 3461 ssl->quic_transport_params_len = 0; 3462 3463 if ((ssl->quic_transport_params = malloc(params_len)) == NULL) 3464 return 0; 3465 3466 memcpy(ssl->quic_transport_params, params, params_len); 3467 ssl->quic_transport_params_len = params_len; 3468 3469 return 1; 3470 } 3471 3472 void 3473 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3474 size_t *out_params_len) 3475 { 3476 *out_params = ssl->s3->peer_quic_transport_params; 3477 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3478 } 3479 3480 void 3481 SSL_set_quic_use_legacy_codepoint(SSL *ssl, int use_legacy) 3482 { 3483 /* Not supported. */ 3484 } 3485 3486 static int 3487 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3488 { 3489 SSL_CIPHER const *a = a_; 3490 SSL_CIPHER const *b = b_; 3491 return ssl_cipher_id_cmp(a, b); 3492 } 3493 3494 SSL_CIPHER * 3495 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3496 { 3497 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3498 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3499 } 3500