1 /* $OpenBSD: ssl_lib.c,v 1.309 2023/04/23 18:51:53 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 return s->verified_chain; 904 } 905 906 /* 907 * Now in theory, since the calling process own 't' it should be safe to 908 * modify. We need to be able to read f without being hassled 909 */ 910 int 911 SSL_copy_session_id(SSL *t, const SSL *f) 912 { 913 SSL_CERT *tmp; 914 915 /* Do we need to do SSL locking? */ 916 if (!SSL_set_session(t, SSL_get_session(f))) 917 return 0; 918 919 /* What if we are set up for one protocol but want to talk another? */ 920 if (t->method != f->method) { 921 t->method->ssl_free(t); 922 t->method = f->method; 923 if (!t->method->ssl_new(t)) 924 return 0; 925 } 926 927 tmp = t->cert; 928 if (f->cert != NULL) { 929 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 930 t->cert = f->cert; 931 } else 932 t->cert = NULL; 933 ssl_cert_free(tmp); 934 935 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 936 return 0; 937 938 return 1; 939 } 940 941 /* Fix this so it checks all the valid key/cert options */ 942 int 943 SSL_CTX_check_private_key(const SSL_CTX *ctx) 944 { 945 if ((ctx == NULL) || (ctx->cert == NULL) || 946 (ctx->cert->key->x509 == NULL)) { 947 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 948 return (0); 949 } 950 if (ctx->cert->key->privatekey == NULL) { 951 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 952 return (0); 953 } 954 return (X509_check_private_key(ctx->cert->key->x509, 955 ctx->cert->key->privatekey)); 956 } 957 958 /* Fix this function so that it takes an optional type parameter */ 959 int 960 SSL_check_private_key(const SSL *ssl) 961 { 962 if (ssl == NULL) { 963 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 964 return (0); 965 } 966 if (ssl->cert == NULL) { 967 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 968 return (0); 969 } 970 if (ssl->cert->key->x509 == NULL) { 971 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 972 return (0); 973 } 974 if (ssl->cert->key->privatekey == NULL) { 975 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 976 return (0); 977 } 978 return (X509_check_private_key(ssl->cert->key->x509, 979 ssl->cert->key->privatekey)); 980 } 981 982 int 983 SSL_accept(SSL *s) 984 { 985 if (s->handshake_func == NULL) 986 SSL_set_accept_state(s); /* Not properly initialized yet */ 987 988 return (s->method->ssl_accept(s)); 989 } 990 991 int 992 SSL_connect(SSL *s) 993 { 994 if (s->handshake_func == NULL) 995 SSL_set_connect_state(s); /* Not properly initialized yet */ 996 997 return (s->method->ssl_connect(s)); 998 } 999 1000 int 1001 SSL_is_dtls(const SSL *s) 1002 { 1003 return s->method->dtls; 1004 } 1005 1006 int 1007 SSL_is_server(const SSL *s) 1008 { 1009 return s->server; 1010 } 1011 1012 static long 1013 ssl_get_default_timeout() 1014 { 1015 /* 1016 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1017 * is way too long for http, the cache would over fill. 1018 */ 1019 return (2 * 60 * 60); 1020 } 1021 1022 long 1023 SSL_get_default_timeout(const SSL *s) 1024 { 1025 return (ssl_get_default_timeout()); 1026 } 1027 1028 int 1029 SSL_read(SSL *s, void *buf, int num) 1030 { 1031 if (num < 0) { 1032 SSLerror(s, SSL_R_BAD_LENGTH); 1033 return -1; 1034 } 1035 1036 if (SSL_is_quic(s)) { 1037 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1038 return (-1); 1039 } 1040 1041 if (s->handshake_func == NULL) { 1042 SSLerror(s, SSL_R_UNINITIALIZED); 1043 return (-1); 1044 } 1045 1046 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1047 s->rwstate = SSL_NOTHING; 1048 return (0); 1049 } 1050 return ssl3_read(s, buf, num); 1051 } 1052 1053 int 1054 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1055 { 1056 int ret; 1057 1058 /* We simply don't bother supporting enormous reads */ 1059 if (num > INT_MAX) { 1060 SSLerror(s, SSL_R_BAD_LENGTH); 1061 return 0; 1062 } 1063 1064 ret = SSL_read(s, buf, (int)num); 1065 if (ret < 0) 1066 ret = 0; 1067 *bytes_read = ret; 1068 1069 return ret > 0; 1070 } 1071 1072 int 1073 SSL_peek(SSL *s, void *buf, int num) 1074 { 1075 if (num < 0) { 1076 SSLerror(s, SSL_R_BAD_LENGTH); 1077 return -1; 1078 } 1079 1080 if (SSL_is_quic(s)) { 1081 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1082 return (-1); 1083 } 1084 1085 if (s->handshake_func == NULL) { 1086 SSLerror(s, SSL_R_UNINITIALIZED); 1087 return (-1); 1088 } 1089 1090 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1091 return (0); 1092 } 1093 return ssl3_peek(s, buf, num); 1094 } 1095 1096 int 1097 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1098 { 1099 int ret; 1100 1101 /* We simply don't bother supporting enormous peeks */ 1102 if (num > INT_MAX) { 1103 SSLerror(s, SSL_R_BAD_LENGTH); 1104 return 0; 1105 } 1106 1107 ret = SSL_peek(s, buf, (int)num); 1108 if (ret < 0) 1109 ret = 0; 1110 *bytes_peeked = ret; 1111 1112 return ret > 0; 1113 } 1114 1115 int 1116 SSL_write(SSL *s, const void *buf, int num) 1117 { 1118 if (num < 0) { 1119 SSLerror(s, SSL_R_BAD_LENGTH); 1120 return -1; 1121 } 1122 1123 if (SSL_is_quic(s)) { 1124 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1125 return (-1); 1126 } 1127 1128 if (s->handshake_func == NULL) { 1129 SSLerror(s, SSL_R_UNINITIALIZED); 1130 return (-1); 1131 } 1132 1133 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1134 s->rwstate = SSL_NOTHING; 1135 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1136 return (-1); 1137 } 1138 return ssl3_write(s, buf, num); 1139 } 1140 1141 int 1142 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1143 { 1144 int ret; 1145 1146 /* We simply don't bother supporting enormous writes */ 1147 if (num > INT_MAX) { 1148 SSLerror(s, SSL_R_BAD_LENGTH); 1149 return 0; 1150 } 1151 1152 if (num == 0) { 1153 /* This API is special */ 1154 bytes_written = 0; 1155 return 1; 1156 } 1157 1158 ret = SSL_write(s, buf, (int)num); 1159 if (ret < 0) 1160 ret = 0; 1161 *bytes_written = ret; 1162 1163 return ret > 0; 1164 } 1165 1166 uint32_t 1167 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1168 { 1169 return 0; 1170 } 1171 1172 int 1173 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1174 { 1175 return 1; 1176 } 1177 1178 uint32_t 1179 SSL_get_max_early_data(const SSL *s) 1180 { 1181 return 0; 1182 } 1183 1184 int 1185 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1186 { 1187 return 1; 1188 } 1189 1190 int 1191 SSL_get_early_data_status(const SSL *s) 1192 { 1193 return SSL_EARLY_DATA_REJECTED; 1194 } 1195 1196 int 1197 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1198 { 1199 *readbytes = 0; 1200 1201 if (!s->server) { 1202 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1203 return SSL_READ_EARLY_DATA_ERROR; 1204 } 1205 1206 return SSL_READ_EARLY_DATA_FINISH; 1207 } 1208 1209 int 1210 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1211 { 1212 *written = 0; 1213 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1214 return 0; 1215 } 1216 1217 int 1218 SSL_shutdown(SSL *s) 1219 { 1220 /* 1221 * Note that this function behaves differently from what one might 1222 * expect. Return values are 0 for no success (yet), 1223 * 1 for success; but calling it once is usually not enough, 1224 * even if blocking I/O is used (see ssl3_shutdown). 1225 */ 1226 1227 if (s->handshake_func == NULL) { 1228 SSLerror(s, SSL_R_UNINITIALIZED); 1229 return (-1); 1230 } 1231 1232 if (s != NULL && !SSL_in_init(s)) 1233 return (s->method->ssl_shutdown(s)); 1234 1235 return (1); 1236 } 1237 1238 int 1239 SSL_renegotiate(SSL *s) 1240 { 1241 if (s->renegotiate == 0) 1242 s->renegotiate = 1; 1243 1244 s->new_session = 1; 1245 1246 return (s->method->ssl_renegotiate(s)); 1247 } 1248 1249 int 1250 SSL_renegotiate_abbreviated(SSL *s) 1251 { 1252 if (s->renegotiate == 0) 1253 s->renegotiate = 1; 1254 1255 s->new_session = 0; 1256 1257 return (s->method->ssl_renegotiate(s)); 1258 } 1259 1260 int 1261 SSL_renegotiate_pending(SSL *s) 1262 { 1263 /* 1264 * Becomes true when negotiation is requested; 1265 * false again once a handshake has finished. 1266 */ 1267 return (s->renegotiate != 0); 1268 } 1269 1270 long 1271 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1272 { 1273 long l; 1274 1275 switch (cmd) { 1276 case SSL_CTRL_GET_READ_AHEAD: 1277 return (s->read_ahead); 1278 case SSL_CTRL_SET_READ_AHEAD: 1279 l = s->read_ahead; 1280 s->read_ahead = larg; 1281 return (l); 1282 1283 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1284 s->msg_callback_arg = parg; 1285 return (1); 1286 1287 case SSL_CTRL_OPTIONS: 1288 return (s->options|=larg); 1289 case SSL_CTRL_CLEAR_OPTIONS: 1290 return (s->options&=~larg); 1291 case SSL_CTRL_MODE: 1292 return (s->mode|=larg); 1293 case SSL_CTRL_CLEAR_MODE: 1294 return (s->mode &=~larg); 1295 case SSL_CTRL_GET_MAX_CERT_LIST: 1296 return (s->max_cert_list); 1297 case SSL_CTRL_SET_MAX_CERT_LIST: 1298 l = s->max_cert_list; 1299 s->max_cert_list = larg; 1300 return (l); 1301 case SSL_CTRL_SET_MTU: 1302 #ifndef OPENSSL_NO_DTLS1 1303 if (larg < (long)dtls1_min_mtu()) 1304 return (0); 1305 #endif 1306 if (SSL_is_dtls(s)) { 1307 s->d1->mtu = larg; 1308 return (larg); 1309 } 1310 return (0); 1311 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1312 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1313 return (0); 1314 s->max_send_fragment = larg; 1315 return (1); 1316 case SSL_CTRL_GET_RI_SUPPORT: 1317 if (s->s3) 1318 return (s->s3->send_connection_binding); 1319 else return (0); 1320 default: 1321 if (SSL_is_dtls(s)) 1322 return dtls1_ctrl(s, cmd, larg, parg); 1323 return ssl3_ctrl(s, cmd, larg, parg); 1324 } 1325 } 1326 1327 long 1328 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1329 { 1330 switch (cmd) { 1331 case SSL_CTRL_SET_MSG_CALLBACK: 1332 s->msg_callback = (ssl_msg_callback_fn *)(fp); 1333 return (1); 1334 1335 default: 1336 return (ssl3_callback_ctrl(s, cmd, fp)); 1337 } 1338 } 1339 1340 struct lhash_st_SSL_SESSION * 1341 SSL_CTX_sessions(SSL_CTX *ctx) 1342 { 1343 return (ctx->sessions); 1344 } 1345 1346 long 1347 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1348 { 1349 long l; 1350 1351 switch (cmd) { 1352 case SSL_CTRL_GET_READ_AHEAD: 1353 return (ctx->read_ahead); 1354 case SSL_CTRL_SET_READ_AHEAD: 1355 l = ctx->read_ahead; 1356 ctx->read_ahead = larg; 1357 return (l); 1358 1359 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1360 ctx->msg_callback_arg = parg; 1361 return (1); 1362 1363 case SSL_CTRL_GET_MAX_CERT_LIST: 1364 return (ctx->max_cert_list); 1365 case SSL_CTRL_SET_MAX_CERT_LIST: 1366 l = ctx->max_cert_list; 1367 ctx->max_cert_list = larg; 1368 return (l); 1369 1370 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1371 l = ctx->session_cache_size; 1372 ctx->session_cache_size = larg; 1373 return (l); 1374 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1375 return (ctx->session_cache_size); 1376 case SSL_CTRL_SET_SESS_CACHE_MODE: 1377 l = ctx->session_cache_mode; 1378 ctx->session_cache_mode = larg; 1379 return (l); 1380 case SSL_CTRL_GET_SESS_CACHE_MODE: 1381 return (ctx->session_cache_mode); 1382 1383 case SSL_CTRL_SESS_NUMBER: 1384 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1385 case SSL_CTRL_SESS_CONNECT: 1386 return (ctx->stats.sess_connect); 1387 case SSL_CTRL_SESS_CONNECT_GOOD: 1388 return (ctx->stats.sess_connect_good); 1389 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1390 return (ctx->stats.sess_connect_renegotiate); 1391 case SSL_CTRL_SESS_ACCEPT: 1392 return (ctx->stats.sess_accept); 1393 case SSL_CTRL_SESS_ACCEPT_GOOD: 1394 return (ctx->stats.sess_accept_good); 1395 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1396 return (ctx->stats.sess_accept_renegotiate); 1397 case SSL_CTRL_SESS_HIT: 1398 return (ctx->stats.sess_hit); 1399 case SSL_CTRL_SESS_CB_HIT: 1400 return (ctx->stats.sess_cb_hit); 1401 case SSL_CTRL_SESS_MISSES: 1402 return (ctx->stats.sess_miss); 1403 case SSL_CTRL_SESS_TIMEOUTS: 1404 return (ctx->stats.sess_timeout); 1405 case SSL_CTRL_SESS_CACHE_FULL: 1406 return (ctx->stats.sess_cache_full); 1407 case SSL_CTRL_OPTIONS: 1408 return (ctx->options|=larg); 1409 case SSL_CTRL_CLEAR_OPTIONS: 1410 return (ctx->options&=~larg); 1411 case SSL_CTRL_MODE: 1412 return (ctx->mode|=larg); 1413 case SSL_CTRL_CLEAR_MODE: 1414 return (ctx->mode&=~larg); 1415 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1416 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1417 return (0); 1418 ctx->max_send_fragment = larg; 1419 return (1); 1420 default: 1421 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1422 } 1423 } 1424 1425 long 1426 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1427 { 1428 switch (cmd) { 1429 case SSL_CTRL_SET_MSG_CALLBACK: 1430 ctx->msg_callback = (ssl_msg_callback_fn *)fp; 1431 return (1); 1432 1433 default: 1434 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1435 } 1436 } 1437 1438 int 1439 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1440 { 1441 long l; 1442 1443 l = a->id - b->id; 1444 if (l == 0L) 1445 return (0); 1446 else 1447 return ((l > 0) ? 1:-1); 1448 } 1449 1450 STACK_OF(SSL_CIPHER) * 1451 SSL_get_ciphers(const SSL *s) 1452 { 1453 if (s == NULL) 1454 return (NULL); 1455 if (s->cipher_list != NULL) 1456 return (s->cipher_list); 1457 1458 return (s->ctx->cipher_list); 1459 } 1460 1461 STACK_OF(SSL_CIPHER) * 1462 SSL_get_client_ciphers(const SSL *s) 1463 { 1464 if (s == NULL || s->session == NULL || !s->server) 1465 return NULL; 1466 return s->session->ciphers; 1467 } 1468 1469 STACK_OF(SSL_CIPHER) * 1470 SSL_get1_supported_ciphers(SSL *s) 1471 { 1472 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1473 SSL_CIPHER *cipher; 1474 uint16_t min_vers, max_vers; 1475 int i; 1476 1477 if (s == NULL) 1478 return NULL; 1479 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1480 return NULL; 1481 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1482 return NULL; 1483 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1484 return NULL; 1485 1486 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1487 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1488 goto err; 1489 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1490 max_vers)) 1491 continue; 1492 if (!ssl_security_supported_cipher(s, cipher)) 1493 continue; 1494 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1495 goto err; 1496 } 1497 1498 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1499 return supported_ciphers; 1500 1501 err: 1502 sk_SSL_CIPHER_free(supported_ciphers); 1503 return NULL; 1504 } 1505 1506 /* See if we have any ECC cipher suites. */ 1507 int 1508 ssl_has_ecc_ciphers(SSL *s) 1509 { 1510 STACK_OF(SSL_CIPHER) *ciphers; 1511 unsigned long alg_k, alg_a; 1512 SSL_CIPHER *cipher; 1513 int i; 1514 1515 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1516 return 0; 1517 1518 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1519 cipher = sk_SSL_CIPHER_value(ciphers, i); 1520 1521 alg_k = cipher->algorithm_mkey; 1522 alg_a = cipher->algorithm_auth; 1523 1524 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1525 return 1; 1526 } 1527 1528 return 0; 1529 } 1530 1531 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1532 const char * 1533 SSL_get_cipher_list(const SSL *s, int n) 1534 { 1535 STACK_OF(SSL_CIPHER) *ciphers; 1536 const SSL_CIPHER *cipher; 1537 1538 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1539 return (NULL); 1540 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1541 return (NULL); 1542 1543 return (cipher->name); 1544 } 1545 1546 STACK_OF(SSL_CIPHER) * 1547 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1548 { 1549 if (ctx == NULL) 1550 return NULL; 1551 return ctx->cipher_list; 1552 } 1553 1554 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1555 int 1556 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1557 { 1558 STACK_OF(SSL_CIPHER) *ciphers; 1559 1560 /* 1561 * ssl_create_cipher_list may return an empty stack if it was unable to 1562 * find a cipher matching the given rule string (for example if the 1563 * rule string specifies a cipher which has been disabled). This is not 1564 * an error as far as ssl_create_cipher_list is concerned, and hence 1565 * ctx->cipher_list has been updated. 1566 */ 1567 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1568 ctx->cipher_list_tls13, str, ctx->cert); 1569 if (ciphers == NULL) { 1570 return (0); 1571 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1572 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1573 return (0); 1574 } 1575 return (1); 1576 } 1577 1578 int 1579 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1580 { 1581 if (!ssl_parse_ciphersuites(&ctx->cipher_list_tls13, str)) { 1582 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1583 return 0; 1584 } 1585 if (!ssl_merge_cipherlists(ctx->cipher_list, 1586 ctx->cipher_list_tls13, &ctx->cipher_list)) 1587 return 0; 1588 1589 return 1; 1590 } 1591 1592 /* Specify the ciphers to be used by the SSL. */ 1593 int 1594 SSL_set_cipher_list(SSL *s, const char *str) 1595 { 1596 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1597 1598 if ((ciphers_tls13 = s->cipher_list_tls13) == NULL) 1599 ciphers_tls13 = s->ctx->cipher_list_tls13; 1600 1601 /* See comment in SSL_CTX_set_cipher_list. */ 1602 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1603 ciphers_tls13, str, s->cert); 1604 if (ciphers == NULL) { 1605 return (0); 1606 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1607 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1608 return (0); 1609 } 1610 return (1); 1611 } 1612 1613 int 1614 SSL_set_ciphersuites(SSL *s, const char *str) 1615 { 1616 STACK_OF(SSL_CIPHER) *ciphers; 1617 1618 if ((ciphers = s->cipher_list) == NULL) 1619 ciphers = s->ctx->cipher_list; 1620 1621 if (!ssl_parse_ciphersuites(&s->cipher_list_tls13, str)) { 1622 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1623 return (0); 1624 } 1625 if (!ssl_merge_cipherlists(ciphers, s->cipher_list_tls13, 1626 &s->cipher_list)) 1627 return 0; 1628 1629 return 1; 1630 } 1631 1632 char * 1633 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1634 { 1635 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1636 const SSL_CIPHER *cipher; 1637 size_t curlen = 0; 1638 char *end; 1639 int i; 1640 1641 if (!s->server || s->session == NULL || len < 2) 1642 return NULL; 1643 1644 if ((client_ciphers = s->session->ciphers) == NULL) 1645 return NULL; 1646 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1647 return NULL; 1648 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1649 sk_SSL_CIPHER_num(server_ciphers) == 0) 1650 return NULL; 1651 1652 buf[0] = '\0'; 1653 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1654 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1655 1656 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1657 continue; 1658 1659 end = buf + curlen; 1660 if (strlcat(buf, cipher->name, len) >= len || 1661 (curlen = strlcat(buf, ":", len)) >= len) { 1662 /* remove truncated cipher from list */ 1663 *end = '\0'; 1664 break; 1665 } 1666 } 1667 /* remove trailing colon */ 1668 if ((end = strrchr(buf, ':')) != NULL) 1669 *end = '\0'; 1670 return buf; 1671 } 1672 1673 /* 1674 * Return a servername extension value if provided in Client Hello, or NULL. 1675 * So far, only host_name types are defined (RFC 3546). 1676 */ 1677 const char * 1678 SSL_get_servername(const SSL *s, const int type) 1679 { 1680 if (type != TLSEXT_NAMETYPE_host_name) 1681 return (NULL); 1682 1683 return (s->session && !s->tlsext_hostname ? 1684 s->session->tlsext_hostname : 1685 s->tlsext_hostname); 1686 } 1687 1688 int 1689 SSL_get_servername_type(const SSL *s) 1690 { 1691 if (s->session && 1692 (!s->tlsext_hostname ? 1693 s->session->tlsext_hostname : s->tlsext_hostname)) 1694 return (TLSEXT_NAMETYPE_host_name); 1695 return (-1); 1696 } 1697 1698 /* 1699 * SSL_select_next_proto implements standard protocol selection. It is 1700 * expected that this function is called from the callback set by 1701 * SSL_CTX_set_alpn_select_cb. 1702 * 1703 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1704 * strings. The length byte itself is not included in the length. A byte 1705 * string of length 0 is invalid. No byte string may be truncated. 1706 * 1707 * It returns either: 1708 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1709 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1710 */ 1711 int 1712 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1713 const unsigned char *server, unsigned int server_len, 1714 const unsigned char *client, unsigned int client_len) 1715 { 1716 unsigned int i, j; 1717 const unsigned char *result; 1718 int status = OPENSSL_NPN_UNSUPPORTED; 1719 1720 /* 1721 * For each protocol in server preference order, 1722 * see if we support it. 1723 */ 1724 for (i = 0; i < server_len; ) { 1725 for (j = 0; j < client_len; ) { 1726 if (server[i] == client[j] && 1727 memcmp(&server[i + 1], 1728 &client[j + 1], server[i]) == 0) { 1729 /* We found a match */ 1730 result = &server[i]; 1731 status = OPENSSL_NPN_NEGOTIATED; 1732 goto found; 1733 } 1734 j += client[j]; 1735 j++; 1736 } 1737 i += server[i]; 1738 i++; 1739 } 1740 1741 /* There's no overlap between our protocols and the server's list. */ 1742 result = client; 1743 status = OPENSSL_NPN_NO_OVERLAP; 1744 1745 found: 1746 *out = (unsigned char *) result + 1; 1747 *outlen = result[0]; 1748 return (status); 1749 } 1750 1751 /* SSL_get0_next_proto_negotiated is deprecated. */ 1752 void 1753 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1754 unsigned int *len) 1755 { 1756 *data = NULL; 1757 *len = 0; 1758 } 1759 1760 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1761 void 1762 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1763 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1764 { 1765 } 1766 1767 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1768 void 1769 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1770 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1771 unsigned int inlen, void *arg), void *arg) 1772 { 1773 } 1774 1775 /* 1776 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1777 * protocols, which must be in wire-format (i.e. a series of non-empty, 1778 * 8-bit length-prefixed strings). Returns 0 on success. 1779 */ 1780 int 1781 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1782 unsigned int protos_len) 1783 { 1784 CBS cbs; 1785 int failed = 1; 1786 1787 if (protos == NULL) 1788 protos_len = 0; 1789 1790 CBS_init(&cbs, protos, protos_len); 1791 1792 if (protos_len > 0) { 1793 if (!tlsext_alpn_check_format(&cbs)) 1794 goto err; 1795 } 1796 1797 if (!CBS_stow(&cbs, &ctx->alpn_client_proto_list, 1798 &ctx->alpn_client_proto_list_len)) 1799 goto err; 1800 1801 failed = 0; 1802 1803 err: 1804 /* NOTE: Return values are the reverse of what you expect. */ 1805 return failed; 1806 } 1807 1808 /* 1809 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1810 * protocols, which must be in wire-format (i.e. a series of non-empty, 1811 * 8-bit length-prefixed strings). Returns 0 on success. 1812 */ 1813 int 1814 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1815 unsigned int protos_len) 1816 { 1817 CBS cbs; 1818 int failed = 1; 1819 1820 if (protos == NULL) 1821 protos_len = 0; 1822 1823 CBS_init(&cbs, protos, protos_len); 1824 1825 if (protos_len > 0) { 1826 if (!tlsext_alpn_check_format(&cbs)) 1827 goto err; 1828 } 1829 1830 if (!CBS_stow(&cbs, &ssl->alpn_client_proto_list, 1831 &ssl->alpn_client_proto_list_len)) 1832 goto err; 1833 1834 failed = 0; 1835 1836 err: 1837 /* NOTE: Return values are the reverse of what you expect. */ 1838 return failed; 1839 } 1840 1841 /* 1842 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1843 * ClientHello processing in order to select an ALPN protocol from the 1844 * client's list of offered protocols. 1845 */ 1846 void 1847 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1848 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1849 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1850 { 1851 ctx->alpn_select_cb = cb; 1852 ctx->alpn_select_cb_arg = arg; 1853 } 1854 1855 /* 1856 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1857 * it sets data to point to len bytes of protocol name (not including the 1858 * leading length-prefix byte). If the server didn't respond with* a negotiated 1859 * protocol then len will be zero. 1860 */ 1861 void 1862 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1863 unsigned int *len) 1864 { 1865 *data = ssl->s3->alpn_selected; 1866 *len = ssl->s3->alpn_selected_len; 1867 } 1868 1869 void 1870 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1871 { 1872 return; 1873 } 1874 1875 int 1876 SSL_export_keying_material(SSL *s, unsigned char *out, size_t out_len, 1877 const char *label, size_t label_len, const unsigned char *context, 1878 size_t context_len, int use_context) 1879 { 1880 if (s->tls13 != NULL && s->version == TLS1_3_VERSION) { 1881 if (!use_context) { 1882 context = NULL; 1883 context_len = 0; 1884 } 1885 return tls13_exporter(s->tls13, label, label_len, context, 1886 context_len, out, out_len); 1887 } 1888 1889 return tls12_exporter(s, label, label_len, context, context_len, 1890 use_context, out, out_len); 1891 } 1892 1893 static unsigned long 1894 ssl_session_hash(const SSL_SESSION *a) 1895 { 1896 unsigned long l; 1897 1898 l = (unsigned long) 1899 ((unsigned int) a->session_id[0] )| 1900 ((unsigned int) a->session_id[1]<< 8L)| 1901 ((unsigned long)a->session_id[2]<<16L)| 1902 ((unsigned long)a->session_id[3]<<24L); 1903 return (l); 1904 } 1905 1906 /* 1907 * NB: If this function (or indeed the hash function which uses a sort of 1908 * coarser function than this one) is changed, ensure 1909 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1910 * able to construct an SSL_SESSION that will collide with any existing session 1911 * with a matching session ID. 1912 */ 1913 static int 1914 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1915 { 1916 if (a->ssl_version != b->ssl_version) 1917 return (1); 1918 if (a->session_id_length != b->session_id_length) 1919 return (1); 1920 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1921 return (1); 1922 return (0); 1923 } 1924 1925 /* 1926 * These wrapper functions should remain rather than redeclaring 1927 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1928 * variable. The reason is that the functions aren't static, they're exposed via 1929 * ssl.h. 1930 */ 1931 static unsigned long 1932 ssl_session_LHASH_HASH(const void *arg) 1933 { 1934 const SSL_SESSION *a = arg; 1935 1936 return ssl_session_hash(a); 1937 } 1938 1939 static int 1940 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1941 { 1942 const SSL_SESSION *a = arg1; 1943 const SSL_SESSION *b = arg2; 1944 1945 return ssl_session_cmp(a, b); 1946 } 1947 1948 SSL_CTX * 1949 SSL_CTX_new(const SSL_METHOD *meth) 1950 { 1951 SSL_CTX *ret; 1952 1953 if (!OPENSSL_init_ssl(0, NULL)) { 1954 SSLerrorx(SSL_R_LIBRARY_BUG); 1955 return (NULL); 1956 } 1957 1958 if (meth == NULL) { 1959 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1960 return (NULL); 1961 } 1962 1963 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1964 SSLerrorx(ERR_R_MALLOC_FAILURE); 1965 return (NULL); 1966 } 1967 1968 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1969 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1970 goto err; 1971 } 1972 1973 ret->method = meth; 1974 ret->min_tls_version = meth->min_tls_version; 1975 ret->max_tls_version = meth->max_tls_version; 1976 ret->min_proto_version = 0; 1977 ret->max_proto_version = 0; 1978 ret->mode = SSL_MODE_AUTO_RETRY; 1979 1980 ret->cert_store = NULL; 1981 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1982 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1983 ret->session_cache_head = NULL; 1984 ret->session_cache_tail = NULL; 1985 1986 /* We take the system default */ 1987 ret->session_timeout = ssl_get_default_timeout(); 1988 1989 ret->new_session_cb = 0; 1990 ret->remove_session_cb = 0; 1991 ret->get_session_cb = 0; 1992 ret->generate_session_id = 0; 1993 1994 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1995 1996 ret->references = 1; 1997 ret->quiet_shutdown = 0; 1998 1999 ret->info_callback = NULL; 2000 2001 ret->app_verify_callback = 0; 2002 ret->app_verify_arg = NULL; 2003 2004 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 2005 ret->read_ahead = 0; 2006 ret->msg_callback = 0; 2007 ret->msg_callback_arg = NULL; 2008 ret->verify_mode = SSL_VERIFY_NONE; 2009 ret->sid_ctx_length = 0; 2010 ret->default_verify_callback = NULL; 2011 2012 if ((ret->cert = ssl_cert_new()) == NULL) 2013 goto err; 2014 2015 ret->default_passwd_callback = 0; 2016 ret->default_passwd_callback_userdata = NULL; 2017 ret->client_cert_cb = 0; 2018 ret->app_gen_cookie_cb = 0; 2019 ret->app_verify_cookie_cb = 0; 2020 2021 ret->sessions = lh_SSL_SESSION_new(); 2022 if (ret->sessions == NULL) 2023 goto err; 2024 ret->cert_store = X509_STORE_new(); 2025 if (ret->cert_store == NULL) 2026 goto err; 2027 2028 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2029 NULL, SSL_DEFAULT_CIPHER_LIST, ret->cert); 2030 if (ret->cipher_list == NULL || 2031 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2032 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2033 goto err2; 2034 } 2035 2036 ret->param = X509_VERIFY_PARAM_new(); 2037 if (!ret->param) 2038 goto err; 2039 2040 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 2041 goto err; 2042 2043 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 2044 2045 ret->extra_certs = NULL; 2046 2047 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2048 2049 ret->tlsext_servername_callback = 0; 2050 ret->tlsext_servername_arg = NULL; 2051 2052 /* Setup RFC4507 ticket keys */ 2053 arc4random_buf(ret->tlsext_tick_key_name, 16); 2054 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 2055 arc4random_buf(ret->tlsext_tick_aes_key, 16); 2056 2057 ret->tlsext_status_cb = 0; 2058 ret->tlsext_status_arg = NULL; 2059 2060 #ifndef OPENSSL_NO_ENGINE 2061 ret->client_cert_engine = NULL; 2062 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2063 #define eng_strx(x) #x 2064 #define eng_str(x) eng_strx(x) 2065 /* Use specific client engine automatically... ignore errors */ 2066 { 2067 ENGINE *eng; 2068 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2069 if (!eng) { 2070 ERR_clear_error(); 2071 ENGINE_load_builtin_engines(); 2072 eng = ENGINE_by_id(eng_str( 2073 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2074 } 2075 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2076 ERR_clear_error(); 2077 } 2078 #endif 2079 #endif 2080 /* 2081 * Default is to connect to non-RI servers. When RI is more widely 2082 * deployed might change this. 2083 */ 2084 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2085 2086 return (ret); 2087 err: 2088 SSLerrorx(ERR_R_MALLOC_FAILURE); 2089 err2: 2090 SSL_CTX_free(ret); 2091 return (NULL); 2092 } 2093 2094 void 2095 SSL_CTX_free(SSL_CTX *ctx) 2096 { 2097 int i; 2098 2099 if (ctx == NULL) 2100 return; 2101 2102 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2103 if (i > 0) 2104 return; 2105 2106 X509_VERIFY_PARAM_free(ctx->param); 2107 2108 /* 2109 * Free internal session cache. However: the remove_cb() may reference 2110 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2111 * after the sessions were flushed. 2112 * As the ex_data handling routines might also touch the session cache, 2113 * the most secure solution seems to be: empty (flush) the cache, then 2114 * free ex_data, then finally free the cache. 2115 * (See ticket [openssl.org #212].) 2116 */ 2117 if (ctx->sessions != NULL) 2118 SSL_CTX_flush_sessions(ctx, 0); 2119 2120 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->ex_data); 2121 2122 lh_SSL_SESSION_free(ctx->sessions); 2123 2124 X509_STORE_free(ctx->cert_store); 2125 sk_SSL_CIPHER_free(ctx->cipher_list); 2126 sk_SSL_CIPHER_free(ctx->cipher_list_tls13); 2127 ssl_cert_free(ctx->cert); 2128 sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free); 2129 sk_X509_pop_free(ctx->extra_certs, X509_free); 2130 2131 #ifndef OPENSSL_NO_SRTP 2132 if (ctx->srtp_profiles) 2133 sk_SRTP_PROTECTION_PROFILE_free(ctx->srtp_profiles); 2134 #endif 2135 2136 #ifndef OPENSSL_NO_ENGINE 2137 ENGINE_finish(ctx->client_cert_engine); 2138 #endif 2139 2140 free(ctx->tlsext_ecpointformatlist); 2141 free(ctx->tlsext_supportedgroups); 2142 2143 free(ctx->alpn_client_proto_list); 2144 2145 free(ctx); 2146 } 2147 2148 int 2149 SSL_CTX_up_ref(SSL_CTX *ctx) 2150 { 2151 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2152 return ((refs > 1) ? 1 : 0); 2153 } 2154 2155 pem_password_cb * 2156 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2157 { 2158 return (ctx->default_passwd_callback); 2159 } 2160 2161 void 2162 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2163 { 2164 ctx->default_passwd_callback = cb; 2165 } 2166 2167 void * 2168 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2169 { 2170 return ctx->default_passwd_callback_userdata; 2171 } 2172 2173 void 2174 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2175 { 2176 ctx->default_passwd_callback_userdata = u; 2177 } 2178 2179 void 2180 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2181 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2182 { 2183 ctx->app_verify_callback = cb; 2184 ctx->app_verify_arg = arg; 2185 } 2186 2187 void 2188 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2189 { 2190 ctx->verify_mode = mode; 2191 ctx->default_verify_callback = cb; 2192 } 2193 2194 void 2195 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2196 { 2197 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2198 } 2199 2200 void 2201 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2202 { 2203 unsigned long mask_a, mask_k; 2204 SSL_CERT_PKEY *cpk; 2205 2206 if (c == NULL) 2207 return; 2208 2209 mask_a = SSL_aNULL | SSL_aTLS1_3; 2210 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2211 2212 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2213 c->dhe_params_auto != 0) 2214 mask_k |= SSL_kDHE; 2215 2216 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2217 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2218 /* Key usage, if present, must allow signing. */ 2219 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2220 mask_a |= SSL_aECDSA; 2221 } 2222 2223 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2224 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2225 mask_k |= SSL_kGOST; 2226 mask_a |= SSL_aGOST01; 2227 } 2228 2229 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2230 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2231 mask_a |= SSL_aRSA; 2232 mask_k |= SSL_kRSA; 2233 } 2234 2235 c->mask_k = mask_k; 2236 c->mask_a = mask_a; 2237 c->valid = 1; 2238 } 2239 2240 /* See if this handshake is using an ECC cipher suite. */ 2241 int 2242 ssl_using_ecc_cipher(SSL *s) 2243 { 2244 unsigned long alg_a, alg_k; 2245 2246 alg_a = s->s3->hs.cipher->algorithm_auth; 2247 alg_k = s->s3->hs.cipher->algorithm_mkey; 2248 2249 return s->session->tlsext_ecpointformatlist != NULL && 2250 s->session->tlsext_ecpointformatlist_length > 0 && 2251 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2252 } 2253 2254 int 2255 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2256 { 2257 const SSL_CIPHER *cs = s->s3->hs.cipher; 2258 unsigned long alg_a; 2259 2260 alg_a = cs->algorithm_auth; 2261 2262 if (alg_a & SSL_aECDSA) { 2263 /* Key usage, if present, must allow signing. */ 2264 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2265 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2266 return (0); 2267 } 2268 } 2269 2270 return (1); 2271 } 2272 2273 SSL_CERT_PKEY * 2274 ssl_get_server_send_pkey(const SSL *s) 2275 { 2276 unsigned long alg_a; 2277 SSL_CERT *c; 2278 int i; 2279 2280 c = s->cert; 2281 ssl_set_cert_masks(c, s->s3->hs.cipher); 2282 2283 alg_a = s->s3->hs.cipher->algorithm_auth; 2284 2285 if (alg_a & SSL_aECDSA) { 2286 i = SSL_PKEY_ECC; 2287 } else if (alg_a & SSL_aRSA) { 2288 i = SSL_PKEY_RSA; 2289 } else if (alg_a & SSL_aGOST01) { 2290 i = SSL_PKEY_GOST01; 2291 } else { /* if (alg_a & SSL_aNULL) */ 2292 SSLerror(s, ERR_R_INTERNAL_ERROR); 2293 return (NULL); 2294 } 2295 2296 return (c->pkeys + i); 2297 } 2298 2299 EVP_PKEY * 2300 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2301 const struct ssl_sigalg **sap) 2302 { 2303 const struct ssl_sigalg *sigalg = NULL; 2304 EVP_PKEY *pkey = NULL; 2305 unsigned long alg_a; 2306 SSL_CERT *c; 2307 int idx = -1; 2308 2309 alg_a = cipher->algorithm_auth; 2310 c = s->cert; 2311 2312 if (alg_a & SSL_aRSA) { 2313 idx = SSL_PKEY_RSA; 2314 } else if ((alg_a & SSL_aECDSA) && 2315 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2316 idx = SSL_PKEY_ECC; 2317 if (idx == -1) { 2318 SSLerror(s, ERR_R_INTERNAL_ERROR); 2319 return (NULL); 2320 } 2321 2322 pkey = c->pkeys[idx].privatekey; 2323 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2324 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2325 return (NULL); 2326 } 2327 *pmd = sigalg->md(); 2328 *sap = sigalg; 2329 2330 return (pkey); 2331 } 2332 2333 size_t 2334 ssl_dhe_params_auto_key_bits(SSL *s) 2335 { 2336 SSL_CERT_PKEY *cpk; 2337 int key_bits; 2338 2339 if (s->cert->dhe_params_auto == 2) { 2340 key_bits = 1024; 2341 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2342 key_bits = 1024; 2343 if (s->s3->hs.cipher->strength_bits == 256) 2344 key_bits = 3072; 2345 } else { 2346 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2347 return 0; 2348 if (cpk->privatekey == NULL || 2349 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2350 return 0; 2351 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2352 return 0; 2353 } 2354 2355 return key_bits; 2356 } 2357 2358 static int 2359 ssl_should_update_external_cache(SSL *s, int mode) 2360 { 2361 int cache_mode; 2362 2363 cache_mode = s->session_ctx->session_cache_mode; 2364 2365 /* Don't cache if mode says not to */ 2366 if ((cache_mode & mode) == 0) 2367 return 0; 2368 2369 /* if it is not already cached, cache it */ 2370 if (!s->hit) 2371 return 1; 2372 2373 /* If it's TLS 1.3, do it to match OpenSSL */ 2374 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2375 return 1; 2376 2377 return 0; 2378 } 2379 2380 static int 2381 ssl_should_update_internal_cache(SSL *s, int mode) 2382 { 2383 int cache_mode; 2384 2385 cache_mode = s->session_ctx->session_cache_mode; 2386 2387 /* Don't cache if mode says not to */ 2388 if ((cache_mode & mode) == 0) 2389 return 0; 2390 2391 /* If it is already cached, don't cache it again */ 2392 if (s->hit) 2393 return 0; 2394 2395 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2396 return 0; 2397 2398 /* If we are lesser than TLS 1.3, Cache it. */ 2399 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2400 return 1; 2401 2402 /* Below this we consider TLS 1.3 or later */ 2403 2404 /* If it's not a server, add it? OpenSSL does this. */ 2405 if (!s->server) 2406 return 1; 2407 2408 /* XXX if we support early data / PSK need to add */ 2409 2410 /* 2411 * If we have the remove session callback, we will want 2412 * to know about this even if it's a stateless ticket 2413 * from 1.3 so we can know when it is removed. 2414 */ 2415 if (s->session_ctx->remove_session_cb != NULL) 2416 return 1; 2417 2418 /* If we have set OP_NO_TICKET, cache it. */ 2419 if ((s->options & SSL_OP_NO_TICKET) != 0) 2420 return 1; 2421 2422 /* Otherwise do not cache */ 2423 return 0; 2424 } 2425 2426 void 2427 ssl_update_cache(SSL *s, int mode) 2428 { 2429 int cache_mode, do_callback; 2430 2431 if (s->session->session_id_length == 0) 2432 return; 2433 2434 cache_mode = s->session_ctx->session_cache_mode; 2435 do_callback = ssl_should_update_external_cache(s, mode); 2436 2437 if (ssl_should_update_internal_cache(s, mode)) { 2438 /* 2439 * XXX should we fail if the add to the internal cache 2440 * fails? OpenSSL doesn't care.. 2441 */ 2442 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2443 } 2444 2445 /* 2446 * Update the "external cache" by calling the new session 2447 * callback if present, even with TLS 1.3 without early data 2448 * "because some application just want to know about the 2449 * creation of a session and aren't doing a full cache". 2450 * Apparently, if they are doing a full cache, they'll have 2451 * some fun, but we endeavour to give application writers the 2452 * same glorious experience they expect from OpenSSL which 2453 * does it this way. 2454 */ 2455 if (do_callback && s->session_ctx->new_session_cb != NULL) { 2456 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2457 if (!s->session_ctx->new_session_cb(s, s->session)) 2458 SSL_SESSION_free(s->session); 2459 } 2460 2461 /* Auto flush every 255 connections. */ 2462 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2463 (cache_mode & mode) != 0) { 2464 int connections; 2465 if (mode & SSL_SESS_CACHE_CLIENT) 2466 connections = s->session_ctx->stats.sess_connect_good; 2467 else 2468 connections = s->session_ctx->stats.sess_accept_good; 2469 if ((connections & 0xff) == 0xff) 2470 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2471 } 2472 } 2473 2474 const SSL_METHOD * 2475 SSL_get_ssl_method(SSL *s) 2476 { 2477 return (s->method); 2478 } 2479 2480 int 2481 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2482 { 2483 int (*handshake_func)(SSL *) = NULL; 2484 int ret = 1; 2485 2486 if (s->method == method) 2487 return (ret); 2488 2489 if (s->handshake_func == s->method->ssl_connect) 2490 handshake_func = method->ssl_connect; 2491 else if (s->handshake_func == s->method->ssl_accept) 2492 handshake_func = method->ssl_accept; 2493 2494 if (s->method->version == method->version) { 2495 s->method = method; 2496 } else { 2497 s->method->ssl_free(s); 2498 s->method = method; 2499 ret = s->method->ssl_new(s); 2500 } 2501 s->handshake_func = handshake_func; 2502 2503 return (ret); 2504 } 2505 2506 int 2507 SSL_get_error(const SSL *s, int i) 2508 { 2509 unsigned long l; 2510 int reason; 2511 BIO *bio; 2512 2513 if (i > 0) 2514 return (SSL_ERROR_NONE); 2515 2516 /* 2517 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2518 * etc, where we do encode the error. 2519 */ 2520 if ((l = ERR_peek_error()) != 0) { 2521 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2522 return (SSL_ERROR_SYSCALL); 2523 else 2524 return (SSL_ERROR_SSL); 2525 } 2526 2527 if (SSL_want_read(s)) { 2528 bio = SSL_get_rbio(s); 2529 if (BIO_should_read(bio)) { 2530 return (SSL_ERROR_WANT_READ); 2531 } else if (BIO_should_write(bio)) { 2532 /* 2533 * This one doesn't make too much sense... We never 2534 * try to write to the rbio, and an application 2535 * program where rbio and wbio are separate couldn't 2536 * even know what it should wait for. However if we 2537 * ever set s->rwstate incorrectly (so that we have 2538 * SSL_want_read(s) instead of SSL_want_write(s)) 2539 * and rbio and wbio *are* the same, this test works 2540 * around that bug; so it might be safer to keep it. 2541 */ 2542 return (SSL_ERROR_WANT_WRITE); 2543 } else if (BIO_should_io_special(bio)) { 2544 reason = BIO_get_retry_reason(bio); 2545 if (reason == BIO_RR_CONNECT) 2546 return (SSL_ERROR_WANT_CONNECT); 2547 else if (reason == BIO_RR_ACCEPT) 2548 return (SSL_ERROR_WANT_ACCEPT); 2549 else 2550 return (SSL_ERROR_SYSCALL); /* unknown */ 2551 } 2552 } 2553 2554 if (SSL_want_write(s)) { 2555 bio = SSL_get_wbio(s); 2556 if (BIO_should_write(bio)) { 2557 return (SSL_ERROR_WANT_WRITE); 2558 } else if (BIO_should_read(bio)) { 2559 /* 2560 * See above (SSL_want_read(s) with 2561 * BIO_should_write(bio)) 2562 */ 2563 return (SSL_ERROR_WANT_READ); 2564 } else if (BIO_should_io_special(bio)) { 2565 reason = BIO_get_retry_reason(bio); 2566 if (reason == BIO_RR_CONNECT) 2567 return (SSL_ERROR_WANT_CONNECT); 2568 else if (reason == BIO_RR_ACCEPT) 2569 return (SSL_ERROR_WANT_ACCEPT); 2570 else 2571 return (SSL_ERROR_SYSCALL); 2572 } 2573 } 2574 2575 if (SSL_want_x509_lookup(s)) 2576 return (SSL_ERROR_WANT_X509_LOOKUP); 2577 2578 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2579 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2580 return (SSL_ERROR_ZERO_RETURN); 2581 2582 return (SSL_ERROR_SYSCALL); 2583 } 2584 2585 int 2586 SSL_CTX_set_quic_method(SSL_CTX *ctx, const SSL_QUIC_METHOD *quic_method) 2587 { 2588 if (ctx->method->dtls) 2589 return 0; 2590 2591 ctx->quic_method = quic_method; 2592 2593 return 1; 2594 } 2595 2596 int 2597 SSL_set_quic_method(SSL *ssl, const SSL_QUIC_METHOD *quic_method) 2598 { 2599 if (ssl->method->dtls) 2600 return 0; 2601 2602 ssl->quic_method = quic_method; 2603 2604 return 1; 2605 } 2606 2607 size_t 2608 SSL_quic_max_handshake_flight_len(const SSL *ssl, 2609 enum ssl_encryption_level_t level) 2610 { 2611 size_t flight_len; 2612 2613 /* Limit flights to 16K when there are no large certificate messages. */ 2614 flight_len = 16384; 2615 2616 switch (level) { 2617 case ssl_encryption_initial: 2618 return flight_len; 2619 2620 case ssl_encryption_early_data: 2621 /* QUIC does not send EndOfEarlyData. */ 2622 return 0; 2623 2624 case ssl_encryption_handshake: 2625 if (ssl->server) { 2626 /* 2627 * Servers may receive Certificate message if configured 2628 * to request client certificates. 2629 */ 2630 if ((SSL_get_verify_mode(ssl) & SSL_VERIFY_PEER) != 0 && 2631 ssl->max_cert_list > flight_len) 2632 flight_len = ssl->max_cert_list; 2633 } else { 2634 /* 2635 * Clients may receive both Certificate message and a 2636 * CertificateRequest message. 2637 */ 2638 if (ssl->max_cert_list * 2 > flight_len) 2639 flight_len = ssl->max_cert_list * 2; 2640 } 2641 return flight_len; 2642 case ssl_encryption_application: 2643 /* 2644 * Note there is not actually a bound on the number of 2645 * NewSessionTickets one may send in a row. This level may need 2646 * more involved flow control. 2647 */ 2648 return flight_len; 2649 } 2650 2651 return 0; 2652 } 2653 2654 enum ssl_encryption_level_t 2655 SSL_quic_read_level(const SSL *ssl) 2656 { 2657 return ssl->s3->hs.tls13.quic_read_level; 2658 } 2659 2660 enum ssl_encryption_level_t 2661 SSL_quic_write_level(const SSL *ssl) 2662 { 2663 return ssl->s3->hs.tls13.quic_write_level; 2664 } 2665 2666 int 2667 SSL_provide_quic_data(SSL *ssl, enum ssl_encryption_level_t level, 2668 const uint8_t *data, size_t len) 2669 { 2670 if (!SSL_is_quic(ssl)) { 2671 SSLerror(ssl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2672 return 0; 2673 } 2674 2675 if (level != SSL_quic_read_level(ssl)) { 2676 SSLerror(ssl, SSL_R_WRONG_ENCRYPTION_LEVEL_RECEIVED); 2677 return 0; 2678 } 2679 2680 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2681 ssl->s3->hs.tls13.quic_read_buffer = tls_buffer_new(0); 2682 if (ssl->s3->hs.tls13.quic_read_buffer == NULL) { 2683 SSLerror(ssl, ERR_R_MALLOC_FAILURE); 2684 return 0; 2685 } 2686 } 2687 2688 /* XXX - note that this does not currently downsize. */ 2689 tls_buffer_set_capacity_limit(ssl->s3->hs.tls13.quic_read_buffer, 2690 SSL_quic_max_handshake_flight_len(ssl, level)); 2691 2692 /* 2693 * XXX - an append that fails due to exceeding capacity should set 2694 * SSL_R_EXCESSIVE_MESSAGE_SIZE. 2695 */ 2696 return tls_buffer_append(ssl->s3->hs.tls13.quic_read_buffer, data, len); 2697 } 2698 2699 int 2700 SSL_process_quic_post_handshake(SSL *ssl) 2701 { 2702 /* XXX - this needs to run PHH received. */ 2703 return 1; 2704 } 2705 2706 int 2707 SSL_do_handshake(SSL *s) 2708 { 2709 if (s->handshake_func == NULL) { 2710 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2711 return (-1); 2712 } 2713 2714 s->method->ssl_renegotiate_check(s); 2715 2716 if (!SSL_in_init(s) && !SSL_in_before(s)) 2717 return 1; 2718 2719 return s->handshake_func(s); 2720 } 2721 2722 /* 2723 * For the next 2 functions, SSL_clear() sets shutdown and so 2724 * one of these calls will reset it 2725 */ 2726 void 2727 SSL_set_accept_state(SSL *s) 2728 { 2729 s->server = 1; 2730 s->shutdown = 0; 2731 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2732 s->handshake_func = s->method->ssl_accept; 2733 ssl_clear_cipher_state(s); 2734 } 2735 2736 void 2737 SSL_set_connect_state(SSL *s) 2738 { 2739 s->server = 0; 2740 s->shutdown = 0; 2741 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2742 s->handshake_func = s->method->ssl_connect; 2743 ssl_clear_cipher_state(s); 2744 } 2745 2746 int 2747 ssl_undefined_function(SSL *s) 2748 { 2749 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2750 return (0); 2751 } 2752 2753 int 2754 ssl_undefined_void_function(void) 2755 { 2756 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2757 return (0); 2758 } 2759 2760 int 2761 ssl_undefined_const_function(const SSL *s) 2762 { 2763 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2764 return (0); 2765 } 2766 2767 const char * 2768 ssl_version_string(int ver) 2769 { 2770 switch (ver) { 2771 case TLS1_VERSION: 2772 return (SSL_TXT_TLSV1); 2773 case TLS1_1_VERSION: 2774 return (SSL_TXT_TLSV1_1); 2775 case TLS1_2_VERSION: 2776 return (SSL_TXT_TLSV1_2); 2777 case TLS1_3_VERSION: 2778 return (SSL_TXT_TLSV1_3); 2779 case DTLS1_VERSION: 2780 return (SSL_TXT_DTLS1); 2781 case DTLS1_2_VERSION: 2782 return (SSL_TXT_DTLS1_2); 2783 default: 2784 return ("unknown"); 2785 } 2786 } 2787 2788 const char * 2789 SSL_get_version(const SSL *s) 2790 { 2791 return ssl_version_string(s->version); 2792 } 2793 2794 SSL * 2795 SSL_dup(SSL *s) 2796 { 2797 STACK_OF(X509_NAME) *sk; 2798 X509_NAME *xn; 2799 SSL *ret; 2800 int i; 2801 2802 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2803 goto err; 2804 2805 ret->version = s->version; 2806 ret->method = s->method; 2807 2808 if (s->session != NULL) { 2809 if (!SSL_copy_session_id(ret, s)) 2810 goto err; 2811 } else { 2812 /* 2813 * No session has been established yet, so we have to expect 2814 * that s->cert or ret->cert will be changed later -- 2815 * they should not both point to the same object, 2816 * and thus we can't use SSL_copy_session_id. 2817 */ 2818 2819 ret->method->ssl_free(ret); 2820 ret->method = s->method; 2821 ret->method->ssl_new(ret); 2822 2823 ssl_cert_free(ret->cert); 2824 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2825 goto err; 2826 2827 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2828 s->sid_ctx_length)) 2829 goto err; 2830 } 2831 2832 ret->options = s->options; 2833 ret->mode = s->mode; 2834 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2835 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2836 ret->msg_callback = s->msg_callback; 2837 ret->msg_callback_arg = s->msg_callback_arg; 2838 SSL_set_verify(ret, SSL_get_verify_mode(s), 2839 SSL_get_verify_callback(s)); 2840 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2841 ret->generate_session_id = s->generate_session_id; 2842 2843 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2844 2845 ret->debug = s->debug; 2846 2847 /* copy app data, a little dangerous perhaps */ 2848 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2849 &ret->ex_data, &s->ex_data)) 2850 goto err; 2851 2852 /* setup rbio, and wbio */ 2853 if (s->rbio != NULL) { 2854 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2855 goto err; 2856 } 2857 if (s->wbio != NULL) { 2858 if (s->wbio != s->rbio) { 2859 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2860 goto err; 2861 } else 2862 ret->wbio = ret->rbio; 2863 } 2864 ret->rwstate = s->rwstate; 2865 ret->in_handshake = s->in_handshake; 2866 ret->handshake_func = s->handshake_func; 2867 ret->server = s->server; 2868 ret->renegotiate = s->renegotiate; 2869 ret->new_session = s->new_session; 2870 ret->quiet_shutdown = s->quiet_shutdown; 2871 ret->shutdown = s->shutdown; 2872 /* SSL_dup does not really work at any state, though */ 2873 ret->s3->hs.state = s->s3->hs.state; 2874 ret->rstate = s->rstate; 2875 2876 /* 2877 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2878 * ret->init_off 2879 */ 2880 ret->init_num = 0; 2881 2882 ret->hit = s->hit; 2883 2884 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2885 2886 if (s->cipher_list != NULL) { 2887 if ((ret->cipher_list = 2888 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2889 goto err; 2890 } 2891 if (s->cipher_list_tls13 != NULL) { 2892 if ((ret->cipher_list_tls13 = 2893 sk_SSL_CIPHER_dup(s->cipher_list_tls13)) == NULL) 2894 goto err; 2895 } 2896 2897 /* Dup the client_CA list */ 2898 if (s->client_CA != NULL) { 2899 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2900 ret->client_CA = sk; 2901 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2902 xn = sk_X509_NAME_value(sk, i); 2903 if (sk_X509_NAME_set(sk, i, 2904 X509_NAME_dup(xn)) == NULL) { 2905 X509_NAME_free(xn); 2906 goto err; 2907 } 2908 } 2909 } 2910 2911 return ret; 2912 err: 2913 SSL_free(ret); 2914 return NULL; 2915 } 2916 2917 void 2918 ssl_clear_cipher_state(SSL *s) 2919 { 2920 tls12_record_layer_clear_read_state(s->rl); 2921 tls12_record_layer_clear_write_state(s->rl); 2922 } 2923 2924 void 2925 ssl_info_callback(const SSL *s, int type, int value) 2926 { 2927 ssl_info_callback_fn *cb; 2928 2929 if ((cb = s->info_callback) == NULL) 2930 cb = s->ctx->info_callback; 2931 if (cb != NULL) 2932 cb(s, type, value); 2933 } 2934 2935 void 2936 ssl_msg_callback(SSL *s, int is_write, int content_type, 2937 const void *msg_buf, size_t msg_len) 2938 { 2939 if (s->msg_callback == NULL) 2940 return; 2941 2942 s->msg_callback(is_write, s->version, content_type, 2943 msg_buf, msg_len, s, s->msg_callback_arg); 2944 } 2945 2946 void 2947 ssl_msg_callback_cbs(SSL *s, int is_write, int content_type, CBS *cbs) 2948 { 2949 ssl_msg_callback(s, is_write, content_type, CBS_data(cbs), CBS_len(cbs)); 2950 } 2951 2952 /* Fix this function so that it takes an optional type parameter */ 2953 X509 * 2954 SSL_get_certificate(const SSL *s) 2955 { 2956 return (s->cert->key->x509); 2957 } 2958 2959 /* Fix this function so that it takes an optional type parameter */ 2960 EVP_PKEY * 2961 SSL_get_privatekey(const SSL *s) 2962 { 2963 return (s->cert->key->privatekey); 2964 } 2965 2966 const SSL_CIPHER * 2967 SSL_get_current_cipher(const SSL *s) 2968 { 2969 if ((s->session != NULL) && (s->session->cipher != NULL)) 2970 return (s->session->cipher); 2971 return (NULL); 2972 } 2973 const void * 2974 SSL_get_current_compression(SSL *s) 2975 { 2976 return (NULL); 2977 } 2978 2979 const void * 2980 SSL_get_current_expansion(SSL *s) 2981 { 2982 return (NULL); 2983 } 2984 2985 size_t 2986 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2987 { 2988 size_t len = sizeof(s->s3->client_random); 2989 2990 if (out == NULL) 2991 return len; 2992 2993 if (len > max_out) 2994 len = max_out; 2995 2996 memcpy(out, s->s3->client_random, len); 2997 2998 return len; 2999 } 3000 3001 size_t 3002 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 3003 { 3004 size_t len = sizeof(s->s3->server_random); 3005 3006 if (out == NULL) 3007 return len; 3008 3009 if (len > max_out) 3010 len = max_out; 3011 3012 memcpy(out, s->s3->server_random, len); 3013 3014 return len; 3015 } 3016 3017 int 3018 ssl_init_wbio_buffer(SSL *s, int push) 3019 { 3020 BIO *bbio; 3021 3022 if (s->bbio == NULL) { 3023 bbio = BIO_new(BIO_f_buffer()); 3024 if (bbio == NULL) 3025 return (0); 3026 s->bbio = bbio; 3027 } else { 3028 bbio = s->bbio; 3029 if (s->bbio == s->wbio) 3030 s->wbio = BIO_pop(s->wbio); 3031 } 3032 (void)BIO_reset(bbio); 3033 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3034 if (!BIO_set_read_buffer_size(bbio, 1)) { 3035 SSLerror(s, ERR_R_BUF_LIB); 3036 return (0); 3037 } 3038 if (push) { 3039 if (s->wbio != bbio) 3040 s->wbio = BIO_push(bbio, s->wbio); 3041 } else { 3042 if (s->wbio == bbio) 3043 s->wbio = BIO_pop(bbio); 3044 } 3045 return (1); 3046 } 3047 3048 void 3049 ssl_free_wbio_buffer(SSL *s) 3050 { 3051 if (s == NULL) 3052 return; 3053 3054 if (s->bbio == NULL) 3055 return; 3056 3057 if (s->bbio == s->wbio) { 3058 /* remove buffering */ 3059 s->wbio = BIO_pop(s->wbio); 3060 } 3061 BIO_free(s->bbio); 3062 s->bbio = NULL; 3063 } 3064 3065 void 3066 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3067 { 3068 ctx->quiet_shutdown = mode; 3069 } 3070 3071 int 3072 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3073 { 3074 return (ctx->quiet_shutdown); 3075 } 3076 3077 void 3078 SSL_set_quiet_shutdown(SSL *s, int mode) 3079 { 3080 s->quiet_shutdown = mode; 3081 } 3082 3083 int 3084 SSL_get_quiet_shutdown(const SSL *s) 3085 { 3086 return (s->quiet_shutdown); 3087 } 3088 3089 void 3090 SSL_set_shutdown(SSL *s, int mode) 3091 { 3092 s->shutdown = mode; 3093 } 3094 3095 int 3096 SSL_get_shutdown(const SSL *s) 3097 { 3098 return (s->shutdown); 3099 } 3100 3101 int 3102 SSL_version(const SSL *s) 3103 { 3104 return (s->version); 3105 } 3106 3107 SSL_CTX * 3108 SSL_get_SSL_CTX(const SSL *ssl) 3109 { 3110 return (ssl->ctx); 3111 } 3112 3113 SSL_CTX * 3114 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3115 { 3116 SSL_CERT *new_cert; 3117 3118 if (ctx == NULL) 3119 ctx = ssl->initial_ctx; 3120 if (ssl->ctx == ctx) 3121 return (ssl->ctx); 3122 3123 if ((new_cert = ssl_cert_dup(ctx->cert)) == NULL) 3124 return NULL; 3125 ssl_cert_free(ssl->cert); 3126 ssl->cert = new_cert; 3127 3128 SSL_CTX_up_ref(ctx); 3129 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3130 ssl->ctx = ctx; 3131 3132 return (ssl->ctx); 3133 } 3134 3135 int 3136 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3137 { 3138 return (X509_STORE_set_default_paths(ctx->cert_store)); 3139 } 3140 3141 int 3142 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3143 const char *CApath) 3144 { 3145 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3146 } 3147 3148 int 3149 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3150 { 3151 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3152 } 3153 3154 void 3155 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3156 { 3157 ssl->info_callback = cb; 3158 } 3159 3160 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3161 { 3162 return (ssl->info_callback); 3163 } 3164 3165 int 3166 SSL_state(const SSL *ssl) 3167 { 3168 return (ssl->s3->hs.state); 3169 } 3170 3171 void 3172 SSL_set_state(SSL *ssl, int state) 3173 { 3174 ssl->s3->hs.state = state; 3175 } 3176 3177 void 3178 SSL_set_verify_result(SSL *ssl, long arg) 3179 { 3180 ssl->verify_result = arg; 3181 } 3182 3183 long 3184 SSL_get_verify_result(const SSL *ssl) 3185 { 3186 return (ssl->verify_result); 3187 } 3188 3189 int 3190 SSL_verify_client_post_handshake(SSL *ssl) 3191 { 3192 return 0; 3193 } 3194 3195 void 3196 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3197 { 3198 return; 3199 } 3200 3201 void 3202 SSL_set_post_handshake_auth(SSL *ssl, int val) 3203 { 3204 return; 3205 } 3206 3207 int 3208 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3209 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3210 { 3211 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3212 new_func, dup_func, free_func)); 3213 } 3214 3215 int 3216 SSL_set_ex_data(SSL *s, int idx, void *arg) 3217 { 3218 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3219 } 3220 3221 void * 3222 SSL_get_ex_data(const SSL *s, int idx) 3223 { 3224 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3225 } 3226 3227 int 3228 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3229 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3230 { 3231 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3232 new_func, dup_func, free_func)); 3233 } 3234 3235 int 3236 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3237 { 3238 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3239 } 3240 3241 void * 3242 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3243 { 3244 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3245 } 3246 3247 int 3248 ssl_ok(SSL *s) 3249 { 3250 return (1); 3251 } 3252 3253 X509_STORE * 3254 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3255 { 3256 return (ctx->cert_store); 3257 } 3258 3259 void 3260 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3261 { 3262 X509_STORE_free(ctx->cert_store); 3263 ctx->cert_store = store; 3264 } 3265 3266 X509 * 3267 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3268 { 3269 if (ctx->cert == NULL) 3270 return NULL; 3271 3272 return ctx->cert->key->x509; 3273 } 3274 3275 EVP_PKEY * 3276 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3277 { 3278 if (ctx->cert == NULL) 3279 return NULL; 3280 3281 return ctx->cert->key->privatekey; 3282 } 3283 3284 int 3285 SSL_want(const SSL *s) 3286 { 3287 return (s->rwstate); 3288 } 3289 3290 void 3291 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3292 int keylength)) 3293 { 3294 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3295 } 3296 3297 void 3298 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3299 int keylength)) 3300 { 3301 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3302 } 3303 3304 void 3305 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3306 int keylength)) 3307 { 3308 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3309 } 3310 3311 void 3312 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3313 int keylength)) 3314 { 3315 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3316 } 3317 3318 void 3319 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3320 int is_export, int keylength)) 3321 { 3322 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3323 (void (*)(void))ecdh); 3324 } 3325 3326 void 3327 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3328 int keylength)) 3329 { 3330 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3331 } 3332 3333 3334 void 3335 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3336 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3337 { 3338 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3339 (void (*)(void))cb); 3340 } 3341 3342 void 3343 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3344 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3345 { 3346 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3347 } 3348 3349 void 3350 SSL_set_debug(SSL *s, int debug) 3351 { 3352 s->debug = debug; 3353 } 3354 3355 int 3356 SSL_cache_hit(SSL *s) 3357 { 3358 return (s->hit); 3359 } 3360 3361 int 3362 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3363 { 3364 return ctx->min_proto_version; 3365 } 3366 3367 int 3368 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3369 { 3370 return ssl_version_set_min(ctx->method, version, 3371 ctx->max_tls_version, &ctx->min_tls_version, 3372 &ctx->min_proto_version); 3373 } 3374 3375 int 3376 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3377 { 3378 return ctx->max_proto_version; 3379 } 3380 3381 int 3382 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3383 { 3384 return ssl_version_set_max(ctx->method, version, 3385 ctx->min_tls_version, &ctx->max_tls_version, 3386 &ctx->max_proto_version); 3387 } 3388 3389 int 3390 SSL_get_min_proto_version(SSL *ssl) 3391 { 3392 return ssl->min_proto_version; 3393 } 3394 3395 int 3396 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3397 { 3398 return ssl_version_set_min(ssl->method, version, 3399 ssl->max_tls_version, &ssl->min_tls_version, 3400 &ssl->min_proto_version); 3401 } 3402 int 3403 SSL_get_max_proto_version(SSL *ssl) 3404 { 3405 return ssl->max_proto_version; 3406 } 3407 3408 int 3409 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3410 { 3411 return ssl_version_set_max(ssl->method, version, 3412 ssl->min_tls_version, &ssl->max_tls_version, 3413 &ssl->max_proto_version); 3414 } 3415 3416 const SSL_METHOD * 3417 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3418 { 3419 return ctx->method; 3420 } 3421 3422 int 3423 SSL_CTX_get_security_level(const SSL_CTX *ctx) 3424 { 3425 return ctx->cert->security_level; 3426 } 3427 3428 void 3429 SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3430 { 3431 ctx->cert->security_level = level; 3432 } 3433 3434 int 3435 SSL_get_security_level(const SSL *ssl) 3436 { 3437 return ssl->cert->security_level; 3438 } 3439 3440 void 3441 SSL_set_security_level(SSL *ssl, int level) 3442 { 3443 ssl->cert->security_level = level; 3444 } 3445 3446 int 3447 SSL_is_quic(const SSL *ssl) 3448 { 3449 return ssl->quic_method != NULL; 3450 } 3451 3452 int 3453 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3454 size_t params_len) 3455 { 3456 freezero(ssl->quic_transport_params, 3457 ssl->quic_transport_params_len); 3458 ssl->quic_transport_params = NULL; 3459 ssl->quic_transport_params_len = 0; 3460 3461 if ((ssl->quic_transport_params = malloc(params_len)) == NULL) 3462 return 0; 3463 3464 memcpy(ssl->quic_transport_params, params, params_len); 3465 ssl->quic_transport_params_len = params_len; 3466 3467 return 1; 3468 } 3469 3470 void 3471 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3472 size_t *out_params_len) 3473 { 3474 *out_params = ssl->s3->peer_quic_transport_params; 3475 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3476 } 3477 3478 void 3479 SSL_set_quic_use_legacy_codepoint(SSL *ssl, int use_legacy) 3480 { 3481 /* Not supported. */ 3482 } 3483 3484 static int 3485 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3486 { 3487 SSL_CIPHER const *a = a_; 3488 SSL_CIPHER const *b = b_; 3489 return ssl_cipher_id_cmp(a, b); 3490 } 3491 3492 SSL_CIPHER * 3493 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3494 { 3495 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3496 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3497 } 3498