ssl_lib.c revision 1.294
1/* $OpenBSD: ssl_lib.c,v 1.294 2022/06/29 20:04:28 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_locl.h" 163#include "ssl_locl.h" 164#include "ssl_sigalgs.h" 165 166const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168int 169SSL_clear(SSL *s) 170{ 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->ssl_new(s)) 213 return (0); 214 } else 215 s->method->ssl_clear(s); 216 217 return (1); 218} 219 220/* Used to change an SSL_CTXs default SSL method type */ 221int 222SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223{ 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST, 230 ctx->internal->cert); 231 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 232 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 233 return (0); 234 } 235 return (1); 236} 237 238SSL * 239SSL_new(SSL_CTX *ctx) 240{ 241 SSL *s; 242 243 if (ctx == NULL) { 244 SSLerrorx(SSL_R_NULL_SSL_CTX); 245 return (NULL); 246 } 247 if (ctx->method == NULL) { 248 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 249 return (NULL); 250 } 251 252 if ((s = calloc(1, sizeof(*s))) == NULL) 253 goto err; 254 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 255 goto err; 256 257 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 258 goto err; 259 260 s->internal->min_tls_version = ctx->internal->min_tls_version; 261 s->internal->max_tls_version = ctx->internal->max_tls_version; 262 s->internal->min_proto_version = ctx->internal->min_proto_version; 263 s->internal->max_proto_version = ctx->internal->max_proto_version; 264 265 s->internal->options = ctx->internal->options; 266 s->internal->mode = ctx->internal->mode; 267 s->internal->max_cert_list = ctx->internal->max_cert_list; 268 s->internal->num_tickets = ctx->internal->num_tickets; 269 270 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 271 goto err; 272 273 s->internal->read_ahead = ctx->internal->read_ahead; 274 s->internal->msg_callback = ctx->internal->msg_callback; 275 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 276 s->verify_mode = ctx->verify_mode; 277 s->sid_ctx_length = ctx->sid_ctx_length; 278 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 279 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 280 s->internal->verify_callback = ctx->internal->default_verify_callback; 281 s->internal->generate_session_id = ctx->internal->generate_session_id; 282 283 s->param = X509_VERIFY_PARAM_new(); 284 if (!s->param) 285 goto err; 286 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 287 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 288 s->max_send_fragment = ctx->internal->max_send_fragment; 289 290 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 291 s->ctx = ctx; 292 s->internal->tlsext_debug_cb = 0; 293 s->internal->tlsext_debug_arg = NULL; 294 s->internal->tlsext_ticket_expected = 0; 295 s->tlsext_status_type = -1; 296 s->internal->tlsext_status_expected = 0; 297 s->internal->tlsext_ocsp_ids = NULL; 298 s->internal->tlsext_ocsp_exts = NULL; 299 s->internal->tlsext_ocsp_resp = NULL; 300 s->internal->tlsext_ocsp_resp_len = 0; 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->initial_ctx = ctx; 303 304 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 305 s->internal->tlsext_ecpointformatlist = 306 calloc(ctx->internal->tlsext_ecpointformatlist_length, 307 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 308 if (s->internal->tlsext_ecpointformatlist == NULL) 309 goto err; 310 memcpy(s->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist, 312 ctx->internal->tlsext_ecpointformatlist_length * 313 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 314 s->internal->tlsext_ecpointformatlist_length = 315 ctx->internal->tlsext_ecpointformatlist_length; 316 } 317 if (ctx->internal->tlsext_supportedgroups != NULL) { 318 s->internal->tlsext_supportedgroups = 319 calloc(ctx->internal->tlsext_supportedgroups_length, 320 sizeof(ctx->internal->tlsext_supportedgroups[0])); 321 if (s->internal->tlsext_supportedgroups == NULL) 322 goto err; 323 memcpy(s->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups, 325 ctx->internal->tlsext_supportedgroups_length * 326 sizeof(ctx->internal->tlsext_supportedgroups[0])); 327 s->internal->tlsext_supportedgroups_length = 328 ctx->internal->tlsext_supportedgroups_length; 329 } 330 331 if (s->ctx->internal->alpn_client_proto_list != NULL) { 332 s->internal->alpn_client_proto_list = 333 malloc(s->ctx->internal->alpn_client_proto_list_len); 334 if (s->internal->alpn_client_proto_list == NULL) 335 goto err; 336 memcpy(s->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list, 338 s->ctx->internal->alpn_client_proto_list_len); 339 s->internal->alpn_client_proto_list_len = 340 s->ctx->internal->alpn_client_proto_list_len; 341 } 342 343 s->verify_result = X509_V_OK; 344 345 s->method = ctx->method; 346 347 if (!s->method->ssl_new(s)) 348 goto err; 349 350 s->references = 1; 351 s->server = ctx->method->server; 352 353 SSL_clear(s); 354 355 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 356 357 return (s); 358 359 err: 360 SSL_free(s); 361 SSLerrorx(ERR_R_MALLOC_FAILURE); 362 return (NULL); 363} 364 365int 366SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 367 unsigned int sid_ctx_len) 368{ 369 if (sid_ctx_len > sizeof ctx->sid_ctx) { 370 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 371 return (0); 372 } 373 ctx->sid_ctx_length = sid_ctx_len; 374 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 375 376 return (1); 377} 378 379int 380SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 381 unsigned int sid_ctx_len) 382{ 383 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 384 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 385 return (0); 386 } 387 ssl->sid_ctx_length = sid_ctx_len; 388 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 389 390 return (1); 391} 392 393int 394SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 395{ 396 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 397 ctx->internal->generate_session_id = cb; 398 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 399 return (1); 400} 401 402int 403SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 404{ 405 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 406 ssl->internal->generate_session_id = cb; 407 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 408 return (1); 409} 410 411int 412SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 413 unsigned int id_len) 414{ 415 /* 416 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 417 * shows how we can "construct" a session to give us the desired 418 * check - ie. to find if there's a session in the hash table 419 * that would conflict with any new session built out of this 420 * id/id_len and the ssl_version in use by this SSL. 421 */ 422 SSL_SESSION r, *p; 423 424 if (id_len > sizeof r.session_id) 425 return (0); 426 427 r.ssl_version = ssl->version; 428 r.session_id_length = id_len; 429 memcpy(r.session_id, id, id_len); 430 431 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 432 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 433 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 434 return (p != NULL); 435} 436 437int 438SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 439{ 440 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 441} 442 443int 444SSL_set_purpose(SSL *s, int purpose) 445{ 446 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 447} 448 449int 450SSL_CTX_set_trust(SSL_CTX *s, int trust) 451{ 452 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 453} 454 455int 456SSL_set_trust(SSL *s, int trust) 457{ 458 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 459} 460 461int 462SSL_set1_host(SSL *s, const char *hostname) 463{ 464 struct in_addr ina; 465 struct in6_addr in6a; 466 467 if (hostname != NULL && *hostname != '\0' && 468 (inet_pton(AF_INET, hostname, &ina) == 1 || 469 inet_pton(AF_INET6, hostname, &in6a) == 1)) 470 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 471 else 472 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 473} 474 475void 476SSL_set_hostflags(SSL *s, unsigned int flags) 477{ 478 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 479} 480 481const char * 482SSL_get0_peername(SSL *s) 483{ 484 return X509_VERIFY_PARAM_get0_peername(s->param); 485} 486 487X509_VERIFY_PARAM * 488SSL_CTX_get0_param(SSL_CTX *ctx) 489{ 490 return (ctx->param); 491} 492 493int 494SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 495{ 496 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 497} 498 499X509_VERIFY_PARAM * 500SSL_get0_param(SSL *ssl) 501{ 502 return (ssl->param); 503} 504 505int 506SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 507{ 508 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 509} 510 511void 512SSL_free(SSL *s) 513{ 514 int i; 515 516 if (s == NULL) 517 return; 518 519 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 520 if (i > 0) 521 return; 522 523 X509_VERIFY_PARAM_free(s->param); 524 525 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 526 527 if (s->bbio != NULL) { 528 /* If the buffering BIO is in place, pop it off */ 529 if (s->bbio == s->wbio) { 530 s->wbio = BIO_pop(s->wbio); 531 } 532 BIO_free(s->bbio); 533 s->bbio = NULL; 534 } 535 536 if (s->rbio != s->wbio) 537 BIO_free_all(s->rbio); 538 BIO_free_all(s->wbio); 539 540 tls13_ctx_free(s->internal->tls13); 541 542 ssl3_release_init_buffer(s); 543 544 sk_SSL_CIPHER_free(s->cipher_list); 545 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 546 547 /* Make the next call work :-) */ 548 if (s->session != NULL) { 549 ssl_clear_bad_session(s); 550 SSL_SESSION_free(s->session); 551 } 552 553 ssl_clear_cipher_state(s); 554 555 ssl_cert_free(s->cert); 556 557 free(s->tlsext_hostname); 558 SSL_CTX_free(s->initial_ctx); 559 560 free(s->internal->tlsext_ecpointformatlist); 561 free(s->internal->tlsext_supportedgroups); 562 563 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 564 X509_EXTENSION_free); 565 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 566 free(s->internal->tlsext_ocsp_resp); 567 568 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 569 570 if (s->method != NULL) 571 s->method->ssl_free(s); 572 573 SSL_CTX_free(s->ctx); 574 575 free(s->internal->alpn_client_proto_list); 576 577 free(s->internal->quic_transport_params); 578 579#ifndef OPENSSL_NO_SRTP 580 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 581#endif 582 583 tls12_record_layer_free(s->internal->rl); 584 585 free(s->internal); 586 free(s); 587} 588 589int 590SSL_up_ref(SSL *s) 591{ 592 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 593 return (refs > 1) ? 1 : 0; 594} 595 596void 597SSL_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 615BIO * 616SSL_get_rbio(const SSL *s) 617{ 618 return (s->rbio); 619} 620 621void 622SSL_set0_rbio(SSL *s, BIO *rbio) 623{ 624 BIO_free_all(s->rbio); 625 s->rbio = rbio; 626} 627 628BIO * 629SSL_get_wbio(const SSL *s) 630{ 631 return (s->wbio); 632} 633 634int 635SSL_get_fd(const SSL *s) 636{ 637 return (SSL_get_rfd(s)); 638} 639 640int 641SSL_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 653int 654SSL_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 666int 667SSL_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 685int 686SSL_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 708int 709SSL_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' */ 733size_t 734SSL_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' */ 746size_t 747SSL_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 759int 760SSL_get_verify_mode(const SSL *s) 761{ 762 return (s->verify_mode); 763} 764 765int 766SSL_get_verify_depth(const SSL *s) 767{ 768 return (X509_VERIFY_PARAM_get_depth(s->param)); 769} 770 771int 772(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 773{ 774 return (s->internal->verify_callback); 775} 776 777void 778SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 779{ 780 ctx->internal->keylog_callback = cb; 781} 782 783SSL_CTX_keylog_cb_func 784SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 785{ 786 return (ctx->internal->keylog_callback); 787} 788 789int 790SSL_set_num_tickets(SSL *s, size_t num_tickets) 791{ 792 s->internal->num_tickets = num_tickets; 793 794 return 1; 795} 796 797size_t 798SSL_get_num_tickets(const SSL *s) 799{ 800 return s->internal->num_tickets; 801} 802 803int 804SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 805{ 806 ctx->internal->num_tickets = num_tickets; 807 808 return 1; 809} 810 811size_t 812SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 813{ 814 return ctx->internal->num_tickets; 815} 816 817int 818SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 819{ 820 return (ctx->verify_mode); 821} 822 823int 824SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 825{ 826 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 827} 828 829int 830(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 831{ 832 return (ctx->internal->default_verify_callback); 833} 834 835void 836SSL_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->internal->verify_callback = callback; 842} 843 844void 845SSL_set_verify_depth(SSL *s, int depth) 846{ 847 X509_VERIFY_PARAM_set_depth(s->param, depth); 848} 849 850void 851SSL_set_read_ahead(SSL *s, int yes) 852{ 853 s->internal->read_ahead = yes; 854} 855 856int 857SSL_get_read_ahead(const SSL *s) 858{ 859 return (s->internal->read_ahead); 860} 861 862int 863SSL_pending(const SSL *s) 864{ 865 return (s->method->ssl_pending(s)); 866} 867 868X509 * 869SSL_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 884STACK_OF(X509) * 885SSL_get_peer_cert_chain(const SSL *s) 886{ 887 if (s == NULL || s->session == NULL) 888 return NULL; 889 890 /* 891 * If we are a client, cert_chain includes the peer's own 892 * certificate; if we are a server, it does not. 893 */ 894 return s->session->cert_chain; 895} 896 897STACK_OF(X509) * 898SSL_get0_verified_chain(const SSL *s) 899{ 900 return s->internal->verified_chain; 901} 902 903/* 904 * Now in theory, since the calling process own 't' it should be safe to 905 * modify. We need to be able to read f without being hassled 906 */ 907int 908SSL_copy_session_id(SSL *t, const SSL *f) 909{ 910 SSL_CERT *tmp; 911 912 /* Do we need to do SSL locking? */ 913 if (!SSL_set_session(t, SSL_get_session(f))) 914 return 0; 915 916 /* What if we are set up for one protocol but want to talk another? */ 917 if (t->method != f->method) { 918 t->method->ssl_free(t); 919 t->method = f->method; 920 if (!t->method->ssl_new(t)) 921 return 0; 922 } 923 924 tmp = t->cert; 925 if (f->cert != NULL) { 926 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 927 t->cert = f->cert; 928 } else 929 t->cert = NULL; 930 ssl_cert_free(tmp); 931 932 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 933 return 0; 934 935 return 1; 936} 937 938/* Fix this so it checks all the valid key/cert options */ 939int 940SSL_CTX_check_private_key(const SSL_CTX *ctx) 941{ 942 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 943 (ctx->internal->cert->key->x509 == NULL)) { 944 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 945 return (0); 946 } 947 if (ctx->internal->cert->key->privatekey == NULL) { 948 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 949 return (0); 950 } 951 return (X509_check_private_key(ctx->internal->cert->key->x509, 952 ctx->internal->cert->key->privatekey)); 953} 954 955/* Fix this function so that it takes an optional type parameter */ 956int 957SSL_check_private_key(const SSL *ssl) 958{ 959 if (ssl == NULL) { 960 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 961 return (0); 962 } 963 if (ssl->cert == NULL) { 964 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 965 return (0); 966 } 967 if (ssl->cert->key->x509 == NULL) { 968 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 969 return (0); 970 } 971 if (ssl->cert->key->privatekey == NULL) { 972 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 973 return (0); 974 } 975 return (X509_check_private_key(ssl->cert->key->x509, 976 ssl->cert->key->privatekey)); 977} 978 979int 980SSL_accept(SSL *s) 981{ 982 if (s->internal->handshake_func == NULL) 983 SSL_set_accept_state(s); /* Not properly initialized yet */ 984 985 return (s->method->ssl_accept(s)); 986} 987 988int 989SSL_connect(SSL *s) 990{ 991 if (s->internal->handshake_func == NULL) 992 SSL_set_connect_state(s); /* Not properly initialized yet */ 993 994 return (s->method->ssl_connect(s)); 995} 996 997int 998SSL_is_dtls(const SSL *s) 999{ 1000 return s->method->dtls; 1001} 1002 1003int 1004SSL_is_server(const SSL *s) 1005{ 1006 return s->server; 1007} 1008 1009static long 1010ssl_get_default_timeout() 1011{ 1012 /* 1013 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1014 * is way too long for http, the cache would over fill. 1015 */ 1016 return (2 * 60 * 60); 1017} 1018 1019long 1020SSL_get_default_timeout(const SSL *s) 1021{ 1022 return (ssl_get_default_timeout()); 1023} 1024 1025int 1026SSL_read(SSL *s, void *buf, int num) 1027{ 1028 if (num < 0) { 1029 SSLerror(s, SSL_R_BAD_LENGTH); 1030 return -1; 1031 } 1032 1033 if (s->internal->handshake_func == NULL) { 1034 SSLerror(s, SSL_R_UNINITIALIZED); 1035 return (-1); 1036 } 1037 1038 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1039 s->internal->rwstate = SSL_NOTHING; 1040 return (0); 1041 } 1042 return ssl3_read(s, buf, num); 1043} 1044 1045int 1046SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1047{ 1048 int ret; 1049 1050 /* We simply don't bother supporting enormous reads */ 1051 if (num > INT_MAX) { 1052 SSLerror(s, SSL_R_BAD_LENGTH); 1053 return 0; 1054 } 1055 1056 ret = SSL_read(s, buf, (int)num); 1057 if (ret < 0) 1058 ret = 0; 1059 *bytes_read = ret; 1060 1061 return ret > 0; 1062} 1063 1064int 1065SSL_peek(SSL *s, void *buf, int num) 1066{ 1067 if (num < 0) { 1068 SSLerror(s, SSL_R_BAD_LENGTH); 1069 return -1; 1070 } 1071 1072 if (s->internal->handshake_func == NULL) { 1073 SSLerror(s, SSL_R_UNINITIALIZED); 1074 return (-1); 1075 } 1076 1077 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1078 return (0); 1079 } 1080 return ssl3_peek(s, buf, num); 1081} 1082 1083int 1084SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1085{ 1086 int ret; 1087 1088 /* We simply don't bother supporting enormous peeks */ 1089 if (num > INT_MAX) { 1090 SSLerror(s, SSL_R_BAD_LENGTH); 1091 return 0; 1092 } 1093 1094 ret = SSL_peek(s, buf, (int)num); 1095 if (ret < 0) 1096 ret = 0; 1097 *bytes_peeked = ret; 1098 1099 return ret > 0; 1100} 1101 1102int 1103SSL_write(SSL *s, const void *buf, int num) 1104{ 1105 if (num < 0) { 1106 SSLerror(s, SSL_R_BAD_LENGTH); 1107 return -1; 1108 } 1109 1110 if (s->internal->handshake_func == NULL) { 1111 SSLerror(s, SSL_R_UNINITIALIZED); 1112 return (-1); 1113 } 1114 1115 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1116 s->internal->rwstate = SSL_NOTHING; 1117 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1118 return (-1); 1119 } 1120 return ssl3_write(s, buf, num); 1121} 1122 1123int 1124SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1125{ 1126 int ret; 1127 1128 /* We simply don't bother supporting enormous writes */ 1129 if (num > INT_MAX) { 1130 SSLerror(s, SSL_R_BAD_LENGTH); 1131 return 0; 1132 } 1133 1134 if (num == 0) { 1135 /* This API is special */ 1136 bytes_written = 0; 1137 return 1; 1138 } 1139 1140 ret = SSL_write(s, buf, (int)num); 1141 if (ret < 0) 1142 ret = 0; 1143 *bytes_written = ret; 1144 1145 return ret > 0; 1146} 1147 1148uint32_t 1149SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1150{ 1151 return 0; 1152} 1153 1154int 1155SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1156{ 1157 return 1; 1158} 1159 1160uint32_t 1161SSL_get_max_early_data(const SSL *s) 1162{ 1163 return 0; 1164} 1165 1166int 1167SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1168{ 1169 return 1; 1170} 1171 1172int 1173SSL_get_early_data_status(const SSL *s) 1174{ 1175 return SSL_EARLY_DATA_REJECTED; 1176} 1177 1178int 1179SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1180{ 1181 *readbytes = 0; 1182 1183 if (!s->server) { 1184 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1185 return SSL_READ_EARLY_DATA_ERROR; 1186 } 1187 1188 return SSL_READ_EARLY_DATA_FINISH; 1189} 1190 1191int 1192SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1193{ 1194 *written = 0; 1195 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1196 return 0; 1197} 1198 1199int 1200SSL_shutdown(SSL *s) 1201{ 1202 /* 1203 * Note that this function behaves differently from what one might 1204 * expect. Return values are 0 for no success (yet), 1205 * 1 for success; but calling it once is usually not enough, 1206 * even if blocking I/O is used (see ssl3_shutdown). 1207 */ 1208 1209 if (s->internal->handshake_func == NULL) { 1210 SSLerror(s, SSL_R_UNINITIALIZED); 1211 return (-1); 1212 } 1213 1214 if (s != NULL && !SSL_in_init(s)) 1215 return (s->method->ssl_shutdown(s)); 1216 1217 return (1); 1218} 1219 1220int 1221SSL_renegotiate(SSL *s) 1222{ 1223 if (s->internal->renegotiate == 0) 1224 s->internal->renegotiate = 1; 1225 1226 s->internal->new_session = 1; 1227 1228 return (s->method->ssl_renegotiate(s)); 1229} 1230 1231int 1232SSL_renegotiate_abbreviated(SSL *s) 1233{ 1234 if (s->internal->renegotiate == 0) 1235 s->internal->renegotiate = 1; 1236 1237 s->internal->new_session = 0; 1238 1239 return (s->method->ssl_renegotiate(s)); 1240} 1241 1242int 1243SSL_renegotiate_pending(SSL *s) 1244{ 1245 /* 1246 * Becomes true when negotiation is requested; 1247 * false again once a handshake has finished. 1248 */ 1249 return (s->internal->renegotiate != 0); 1250} 1251 1252long 1253SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1254{ 1255 long l; 1256 1257 switch (cmd) { 1258 case SSL_CTRL_GET_READ_AHEAD: 1259 return (s->internal->read_ahead); 1260 case SSL_CTRL_SET_READ_AHEAD: 1261 l = s->internal->read_ahead; 1262 s->internal->read_ahead = larg; 1263 return (l); 1264 1265 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1266 s->internal->msg_callback_arg = parg; 1267 return (1); 1268 1269 case SSL_CTRL_OPTIONS: 1270 return (s->internal->options|=larg); 1271 case SSL_CTRL_CLEAR_OPTIONS: 1272 return (s->internal->options&=~larg); 1273 case SSL_CTRL_MODE: 1274 return (s->internal->mode|=larg); 1275 case SSL_CTRL_CLEAR_MODE: 1276 return (s->internal->mode &=~larg); 1277 case SSL_CTRL_GET_MAX_CERT_LIST: 1278 return (s->internal->max_cert_list); 1279 case SSL_CTRL_SET_MAX_CERT_LIST: 1280 l = s->internal->max_cert_list; 1281 s->internal->max_cert_list = larg; 1282 return (l); 1283 case SSL_CTRL_SET_MTU: 1284#ifndef OPENSSL_NO_DTLS1 1285 if (larg < (long)dtls1_min_mtu()) 1286 return (0); 1287#endif 1288 if (SSL_is_dtls(s)) { 1289 s->d1->mtu = larg; 1290 return (larg); 1291 } 1292 return (0); 1293 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1294 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1295 return (0); 1296 s->max_send_fragment = larg; 1297 return (1); 1298 case SSL_CTRL_GET_RI_SUPPORT: 1299 if (s->s3) 1300 return (s->s3->send_connection_binding); 1301 else return (0); 1302 default: 1303 if (SSL_is_dtls(s)) 1304 return dtls1_ctrl(s, cmd, larg, parg); 1305 return ssl3_ctrl(s, cmd, larg, parg); 1306 } 1307} 1308 1309long 1310SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1311{ 1312 switch (cmd) { 1313 case SSL_CTRL_SET_MSG_CALLBACK: 1314 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1315 return (1); 1316 1317 default: 1318 return (ssl3_callback_ctrl(s, cmd, fp)); 1319 } 1320} 1321 1322struct lhash_st_SSL_SESSION * 1323SSL_CTX_sessions(SSL_CTX *ctx) 1324{ 1325 return (ctx->internal->sessions); 1326} 1327 1328long 1329SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1330{ 1331 long l; 1332 1333 switch (cmd) { 1334 case SSL_CTRL_GET_READ_AHEAD: 1335 return (ctx->internal->read_ahead); 1336 case SSL_CTRL_SET_READ_AHEAD: 1337 l = ctx->internal->read_ahead; 1338 ctx->internal->read_ahead = larg; 1339 return (l); 1340 1341 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1342 ctx->internal->msg_callback_arg = parg; 1343 return (1); 1344 1345 case SSL_CTRL_GET_MAX_CERT_LIST: 1346 return (ctx->internal->max_cert_list); 1347 case SSL_CTRL_SET_MAX_CERT_LIST: 1348 l = ctx->internal->max_cert_list; 1349 ctx->internal->max_cert_list = larg; 1350 return (l); 1351 1352 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1353 l = ctx->internal->session_cache_size; 1354 ctx->internal->session_cache_size = larg; 1355 return (l); 1356 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1357 return (ctx->internal->session_cache_size); 1358 case SSL_CTRL_SET_SESS_CACHE_MODE: 1359 l = ctx->internal->session_cache_mode; 1360 ctx->internal->session_cache_mode = larg; 1361 return (l); 1362 case SSL_CTRL_GET_SESS_CACHE_MODE: 1363 return (ctx->internal->session_cache_mode); 1364 1365 case SSL_CTRL_SESS_NUMBER: 1366 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1367 case SSL_CTRL_SESS_CONNECT: 1368 return (ctx->internal->stats.sess_connect); 1369 case SSL_CTRL_SESS_CONNECT_GOOD: 1370 return (ctx->internal->stats.sess_connect_good); 1371 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1372 return (ctx->internal->stats.sess_connect_renegotiate); 1373 case SSL_CTRL_SESS_ACCEPT: 1374 return (ctx->internal->stats.sess_accept); 1375 case SSL_CTRL_SESS_ACCEPT_GOOD: 1376 return (ctx->internal->stats.sess_accept_good); 1377 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1378 return (ctx->internal->stats.sess_accept_renegotiate); 1379 case SSL_CTRL_SESS_HIT: 1380 return (ctx->internal->stats.sess_hit); 1381 case SSL_CTRL_SESS_CB_HIT: 1382 return (ctx->internal->stats.sess_cb_hit); 1383 case SSL_CTRL_SESS_MISSES: 1384 return (ctx->internal->stats.sess_miss); 1385 case SSL_CTRL_SESS_TIMEOUTS: 1386 return (ctx->internal->stats.sess_timeout); 1387 case SSL_CTRL_SESS_CACHE_FULL: 1388 return (ctx->internal->stats.sess_cache_full); 1389 case SSL_CTRL_OPTIONS: 1390 return (ctx->internal->options|=larg); 1391 case SSL_CTRL_CLEAR_OPTIONS: 1392 return (ctx->internal->options&=~larg); 1393 case SSL_CTRL_MODE: 1394 return (ctx->internal->mode|=larg); 1395 case SSL_CTRL_CLEAR_MODE: 1396 return (ctx->internal->mode&=~larg); 1397 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1398 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1399 return (0); 1400 ctx->internal->max_send_fragment = larg; 1401 return (1); 1402 default: 1403 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1404 } 1405} 1406 1407long 1408SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1409{ 1410 switch (cmd) { 1411 case SSL_CTRL_SET_MSG_CALLBACK: 1412 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1413 return (1); 1414 1415 default: 1416 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1417 } 1418} 1419 1420int 1421ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1422{ 1423 long l; 1424 1425 l = a->id - b->id; 1426 if (l == 0L) 1427 return (0); 1428 else 1429 return ((l > 0) ? 1:-1); 1430} 1431 1432STACK_OF(SSL_CIPHER) * 1433SSL_get_ciphers(const SSL *s) 1434{ 1435 if (s == NULL) 1436 return (NULL); 1437 if (s->cipher_list != NULL) 1438 return (s->cipher_list); 1439 1440 return (s->ctx->cipher_list); 1441} 1442 1443STACK_OF(SSL_CIPHER) * 1444SSL_get_client_ciphers(const SSL *s) 1445{ 1446 if (s == NULL || s->session == NULL || !s->server) 1447 return NULL; 1448 return s->session->ciphers; 1449} 1450 1451STACK_OF(SSL_CIPHER) * 1452SSL_get1_supported_ciphers(SSL *s) 1453{ 1454 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1455 SSL_CIPHER *cipher; 1456 uint16_t min_vers, max_vers; 1457 int i; 1458 1459 if (s == NULL) 1460 return NULL; 1461 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1462 return NULL; 1463 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1464 return NULL; 1465 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1466 return NULL; 1467 1468 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1469 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1470 goto err; 1471 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1472 max_vers)) 1473 continue; 1474 if (!ssl_security(s, SSL_SECOP_CIPHER_SUPPORTED, 1475 cipher->strength_bits, 0, cipher)) 1476 continue; 1477 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1478 goto err; 1479 } 1480 1481 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1482 return supported_ciphers; 1483 1484 err: 1485 sk_SSL_CIPHER_free(supported_ciphers); 1486 return NULL; 1487} 1488 1489/* See if we have any ECC cipher suites. */ 1490int 1491ssl_has_ecc_ciphers(SSL *s) 1492{ 1493 STACK_OF(SSL_CIPHER) *ciphers; 1494 unsigned long alg_k, alg_a; 1495 SSL_CIPHER *cipher; 1496 int i; 1497 1498 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1499 return 0; 1500 1501 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1502 cipher = sk_SSL_CIPHER_value(ciphers, i); 1503 1504 alg_k = cipher->algorithm_mkey; 1505 alg_a = cipher->algorithm_auth; 1506 1507 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1508 return 1; 1509 } 1510 1511 return 0; 1512} 1513 1514/* The old interface to get the same thing as SSL_get_ciphers(). */ 1515const char * 1516SSL_get_cipher_list(const SSL *s, int n) 1517{ 1518 STACK_OF(SSL_CIPHER) *ciphers; 1519 const SSL_CIPHER *cipher; 1520 1521 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1522 return (NULL); 1523 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1524 return (NULL); 1525 1526 return (cipher->name); 1527} 1528 1529STACK_OF(SSL_CIPHER) * 1530SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1531{ 1532 if (ctx == NULL) 1533 return NULL; 1534 return ctx->cipher_list; 1535} 1536 1537/* Specify the ciphers to be used by default by the SSL_CTX. */ 1538int 1539SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1540{ 1541 STACK_OF(SSL_CIPHER) *ciphers; 1542 1543 /* 1544 * ssl_create_cipher_list may return an empty stack if it was unable to 1545 * find a cipher matching the given rule string (for example if the 1546 * rule string specifies a cipher which has been disabled). This is not 1547 * an error as far as ssl_create_cipher_list is concerned, and hence 1548 * ctx->cipher_list has been updated. 1549 */ 1550 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1551 ctx->internal->cipher_list_tls13, str, ctx->internal->cert); 1552 if (ciphers == NULL) { 1553 return (0); 1554 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1555 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1556 return (0); 1557 } 1558 return (1); 1559} 1560 1561int 1562SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1563{ 1564 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1565 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1566 return 0; 1567 } 1568 if (!ssl_merge_cipherlists(ctx->cipher_list, 1569 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1570 return 0; 1571 1572 return 1; 1573} 1574 1575/* Specify the ciphers to be used by the SSL. */ 1576int 1577SSL_set_cipher_list(SSL *s, const char *str) 1578{ 1579 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1580 1581 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1582 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1583 1584 /* See comment in SSL_CTX_set_cipher_list. */ 1585 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1586 ciphers_tls13, str, s->cert); 1587 if (ciphers == NULL) { 1588 return (0); 1589 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1590 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1591 return (0); 1592 } 1593 return (1); 1594} 1595 1596int 1597SSL_set_ciphersuites(SSL *s, const char *str) 1598{ 1599 STACK_OF(SSL_CIPHER) *ciphers; 1600 1601 if ((ciphers = s->cipher_list) == NULL) 1602 ciphers = s->ctx->cipher_list; 1603 1604 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1605 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1606 return (0); 1607 } 1608 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1609 &s->cipher_list)) 1610 return 0; 1611 1612 return 1; 1613} 1614 1615char * 1616SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1617{ 1618 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1619 const SSL_CIPHER *cipher; 1620 size_t curlen = 0; 1621 char *end; 1622 int i; 1623 1624 if (!s->server || s->session == NULL || len < 2) 1625 return NULL; 1626 1627 if ((client_ciphers = s->session->ciphers) == NULL) 1628 return NULL; 1629 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1630 return NULL; 1631 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1632 sk_SSL_CIPHER_num(server_ciphers) == 0) 1633 return NULL; 1634 1635 buf[0] = '\0'; 1636 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1637 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1638 1639 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1640 continue; 1641 1642 end = buf + curlen; 1643 if (strlcat(buf, cipher->name, len) >= len || 1644 (curlen = strlcat(buf, ":", len)) >= len) { 1645 /* remove truncated cipher from list */ 1646 *end = '\0'; 1647 break; 1648 } 1649 } 1650 /* remove trailing colon */ 1651 if ((end = strrchr(buf, ':')) != NULL) 1652 *end = '\0'; 1653 return buf; 1654} 1655 1656/* 1657 * Return a servername extension value if provided in Client Hello, or NULL. 1658 * So far, only host_name types are defined (RFC 3546). 1659 */ 1660const char * 1661SSL_get_servername(const SSL *s, const int type) 1662{ 1663 if (type != TLSEXT_NAMETYPE_host_name) 1664 return (NULL); 1665 1666 return (s->session && !s->tlsext_hostname ? 1667 s->session->tlsext_hostname : 1668 s->tlsext_hostname); 1669} 1670 1671int 1672SSL_get_servername_type(const SSL *s) 1673{ 1674 if (s->session && 1675 (!s->tlsext_hostname ? 1676 s->session->tlsext_hostname : s->tlsext_hostname)) 1677 return (TLSEXT_NAMETYPE_host_name); 1678 return (-1); 1679} 1680 1681/* 1682 * SSL_select_next_proto implements standard protocol selection. It is 1683 * expected that this function is called from the callback set by 1684 * SSL_CTX_set_alpn_select_cb. 1685 * 1686 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1687 * strings. The length byte itself is not included in the length. A byte 1688 * string of length 0 is invalid. No byte string may be truncated. 1689 * 1690 * It returns either: 1691 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1692 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1693 */ 1694int 1695SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1696 const unsigned char *server, unsigned int server_len, 1697 const unsigned char *client, unsigned int client_len) 1698{ 1699 unsigned int i, j; 1700 const unsigned char *result; 1701 int status = OPENSSL_NPN_UNSUPPORTED; 1702 1703 /* 1704 * For each protocol in server preference order, 1705 * see if we support it. 1706 */ 1707 for (i = 0; i < server_len; ) { 1708 for (j = 0; j < client_len; ) { 1709 if (server[i] == client[j] && 1710 memcmp(&server[i + 1], 1711 &client[j + 1], server[i]) == 0) { 1712 /* We found a match */ 1713 result = &server[i]; 1714 status = OPENSSL_NPN_NEGOTIATED; 1715 goto found; 1716 } 1717 j += client[j]; 1718 j++; 1719 } 1720 i += server[i]; 1721 i++; 1722 } 1723 1724 /* There's no overlap between our protocols and the server's list. */ 1725 result = client; 1726 status = OPENSSL_NPN_NO_OVERLAP; 1727 1728 found: 1729 *out = (unsigned char *) result + 1; 1730 *outlen = result[0]; 1731 return (status); 1732} 1733 1734/* SSL_get0_next_proto_negotiated is deprecated. */ 1735void 1736SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1737 unsigned int *len) 1738{ 1739 *data = NULL; 1740 *len = 0; 1741} 1742 1743/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1744void 1745SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1746 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1747{ 1748} 1749 1750/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1751void 1752SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1753 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1754 unsigned int inlen, void *arg), void *arg) 1755{ 1756} 1757 1758/* 1759 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1760 * protocols, which must be in wire-format (i.e. a series of non-empty, 1761 * 8-bit length-prefixed strings). Returns 0 on success. 1762 */ 1763int 1764SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1765 unsigned int protos_len) 1766{ 1767 int failed = 1; 1768 1769 if (protos == NULL || protos_len == 0) 1770 goto err; 1771 1772 free(ctx->internal->alpn_client_proto_list); 1773 ctx->internal->alpn_client_proto_list = NULL; 1774 ctx->internal->alpn_client_proto_list_len = 0; 1775 1776 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1777 == NULL) 1778 goto err; 1779 ctx->internal->alpn_client_proto_list_len = protos_len; 1780 1781 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1782 1783 failed = 0; 1784 1785 err: 1786 /* NOTE: Return values are the reverse of what you expect. */ 1787 return (failed); 1788} 1789 1790/* 1791 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1792 * protocols, which must be in wire-format (i.e. a series of non-empty, 1793 * 8-bit length-prefixed strings). Returns 0 on success. 1794 */ 1795int 1796SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1797 unsigned int protos_len) 1798{ 1799 int failed = 1; 1800 1801 if (protos == NULL || protos_len == 0) 1802 goto err; 1803 1804 free(ssl->internal->alpn_client_proto_list); 1805 ssl->internal->alpn_client_proto_list = NULL; 1806 ssl->internal->alpn_client_proto_list_len = 0; 1807 1808 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1809 == NULL) 1810 goto err; 1811 ssl->internal->alpn_client_proto_list_len = protos_len; 1812 1813 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1814 1815 failed = 0; 1816 1817 err: 1818 /* NOTE: Return values are the reverse of what you expect. */ 1819 return (failed); 1820} 1821 1822/* 1823 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1824 * ClientHello processing in order to select an ALPN protocol from the 1825 * client's list of offered protocols. 1826 */ 1827void 1828SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1829 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1830 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1831{ 1832 ctx->internal->alpn_select_cb = cb; 1833 ctx->internal->alpn_select_cb_arg = arg; 1834} 1835 1836/* 1837 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1838 * it sets data to point to len bytes of protocol name (not including the 1839 * leading length-prefix byte). If the server didn't respond with* a negotiated 1840 * protocol then len will be zero. 1841 */ 1842void 1843SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1844 unsigned int *len) 1845{ 1846 *data = ssl->s3->alpn_selected; 1847 *len = ssl->s3->alpn_selected_len; 1848} 1849 1850void 1851SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1852{ 1853 return; 1854} 1855 1856int 1857SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1858 const char *label, size_t llen, const unsigned char *p, size_t plen, 1859 int use_context) 1860{ 1861 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1862 if (!use_context) { 1863 p = NULL; 1864 plen = 0; 1865 } 1866 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1867 out, olen); 1868 } 1869 1870 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1871 use_context)); 1872} 1873 1874static unsigned long 1875ssl_session_hash(const SSL_SESSION *a) 1876{ 1877 unsigned long l; 1878 1879 l = (unsigned long) 1880 ((unsigned int) a->session_id[0] )| 1881 ((unsigned int) a->session_id[1]<< 8L)| 1882 ((unsigned long)a->session_id[2]<<16L)| 1883 ((unsigned long)a->session_id[3]<<24L); 1884 return (l); 1885} 1886 1887/* 1888 * NB: If this function (or indeed the hash function which uses a sort of 1889 * coarser function than this one) is changed, ensure 1890 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1891 * able to construct an SSL_SESSION that will collide with any existing session 1892 * with a matching session ID. 1893 */ 1894static int 1895ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1896{ 1897 if (a->ssl_version != b->ssl_version) 1898 return (1); 1899 if (a->session_id_length != b->session_id_length) 1900 return (1); 1901 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1902 return (1); 1903 return (0); 1904} 1905 1906/* 1907 * These wrapper functions should remain rather than redeclaring 1908 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1909 * variable. The reason is that the functions aren't static, they're exposed via 1910 * ssl.h. 1911 */ 1912static unsigned long 1913ssl_session_LHASH_HASH(const void *arg) 1914{ 1915 const SSL_SESSION *a = arg; 1916 1917 return ssl_session_hash(a); 1918} 1919 1920static int 1921ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1922{ 1923 const SSL_SESSION *a = arg1; 1924 const SSL_SESSION *b = arg2; 1925 1926 return ssl_session_cmp(a, b); 1927} 1928 1929SSL_CTX * 1930SSL_CTX_new(const SSL_METHOD *meth) 1931{ 1932 SSL_CTX *ret; 1933 1934 if (!OPENSSL_init_ssl(0, NULL)) { 1935 SSLerrorx(SSL_R_LIBRARY_BUG); 1936 return (NULL); 1937 } 1938 1939 if (meth == NULL) { 1940 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1941 return (NULL); 1942 } 1943 1944 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1945 SSLerrorx(ERR_R_MALLOC_FAILURE); 1946 return (NULL); 1947 } 1948 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1949 free(ret); 1950 SSLerrorx(ERR_R_MALLOC_FAILURE); 1951 return (NULL); 1952 } 1953 1954 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1955 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1956 goto err; 1957 } 1958 1959 ret->method = meth; 1960 ret->internal->min_tls_version = meth->min_tls_version; 1961 ret->internal->max_tls_version = meth->max_tls_version; 1962 ret->internal->min_proto_version = 0; 1963 ret->internal->max_proto_version = 0; 1964 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1965 1966 ret->cert_store = NULL; 1967 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1968 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1969 ret->internal->session_cache_head = NULL; 1970 ret->internal->session_cache_tail = NULL; 1971 1972 /* We take the system default */ 1973 ret->session_timeout = ssl_get_default_timeout(); 1974 1975 ret->internal->new_session_cb = 0; 1976 ret->internal->remove_session_cb = 0; 1977 ret->internal->get_session_cb = 0; 1978 ret->internal->generate_session_id = 0; 1979 1980 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1981 1982 ret->references = 1; 1983 ret->internal->quiet_shutdown = 0; 1984 1985 ret->internal->info_callback = NULL; 1986 1987 ret->internal->app_verify_callback = 0; 1988 ret->internal->app_verify_arg = NULL; 1989 1990 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1991 ret->internal->read_ahead = 0; 1992 ret->internal->msg_callback = 0; 1993 ret->internal->msg_callback_arg = NULL; 1994 ret->verify_mode = SSL_VERIFY_NONE; 1995 ret->sid_ctx_length = 0; 1996 ret->internal->default_verify_callback = NULL; 1997 1998 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1999 goto err; 2000 2001 ret->default_passwd_callback = 0; 2002 ret->default_passwd_callback_userdata = NULL; 2003 ret->internal->client_cert_cb = 0; 2004 ret->internal->app_gen_cookie_cb = 0; 2005 ret->internal->app_verify_cookie_cb = 0; 2006 2007 ret->internal->sessions = lh_SSL_SESSION_new(); 2008 if (ret->internal->sessions == NULL) 2009 goto err; 2010 ret->cert_store = X509_STORE_new(); 2011 if (ret->cert_store == NULL) 2012 goto err; 2013 2014 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2015 NULL, SSL_DEFAULT_CIPHER_LIST, ret->internal->cert); 2016 if (ret->cipher_list == NULL || 2017 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2018 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2019 goto err2; 2020 } 2021 2022 ret->param = X509_VERIFY_PARAM_new(); 2023 if (!ret->param) 2024 goto err; 2025 2026 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2027 goto err; 2028 2029 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2030 2031 ret->extra_certs = NULL; 2032 2033 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2034 2035 ret->internal->tlsext_servername_callback = 0; 2036 ret->internal->tlsext_servername_arg = NULL; 2037 2038 /* Setup RFC4507 ticket keys */ 2039 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2040 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2041 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2042 2043 ret->internal->tlsext_status_cb = 0; 2044 ret->internal->tlsext_status_arg = NULL; 2045 2046#ifndef OPENSSL_NO_ENGINE 2047 ret->internal->client_cert_engine = NULL; 2048#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2049#define eng_strx(x) #x 2050#define eng_str(x) eng_strx(x) 2051 /* Use specific client engine automatically... ignore errors */ 2052 { 2053 ENGINE *eng; 2054 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2055 if (!eng) { 2056 ERR_clear_error(); 2057 ENGINE_load_builtin_engines(); 2058 eng = ENGINE_by_id(eng_str( 2059 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2060 } 2061 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2062 ERR_clear_error(); 2063 } 2064#endif 2065#endif 2066 /* 2067 * Default is to connect to non-RI servers. When RI is more widely 2068 * deployed might change this. 2069 */ 2070 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2071 2072 return (ret); 2073 err: 2074 SSLerrorx(ERR_R_MALLOC_FAILURE); 2075 err2: 2076 SSL_CTX_free(ret); 2077 return (NULL); 2078} 2079 2080void 2081SSL_CTX_free(SSL_CTX *ctx) 2082{ 2083 int i; 2084 2085 if (ctx == NULL) 2086 return; 2087 2088 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2089 if (i > 0) 2090 return; 2091 2092 X509_VERIFY_PARAM_free(ctx->param); 2093 2094 /* 2095 * Free internal session cache. However: the remove_cb() may reference 2096 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2097 * after the sessions were flushed. 2098 * As the ex_data handling routines might also touch the session cache, 2099 * the most secure solution seems to be: empty (flush) the cache, then 2100 * free ex_data, then finally free the cache. 2101 * (See ticket [openssl.org #212].) 2102 */ 2103 if (ctx->internal->sessions != NULL) 2104 SSL_CTX_flush_sessions(ctx, 0); 2105 2106 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2107 2108 lh_SSL_SESSION_free(ctx->internal->sessions); 2109 2110 X509_STORE_free(ctx->cert_store); 2111 sk_SSL_CIPHER_free(ctx->cipher_list); 2112 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2113 ssl_cert_free(ctx->internal->cert); 2114 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2115 sk_X509_pop_free(ctx->extra_certs, X509_free); 2116 2117#ifndef OPENSSL_NO_SRTP 2118 if (ctx->internal->srtp_profiles) 2119 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2120#endif 2121 2122#ifndef OPENSSL_NO_ENGINE 2123 ENGINE_finish(ctx->internal->client_cert_engine); 2124#endif 2125 2126 free(ctx->internal->tlsext_ecpointformatlist); 2127 free(ctx->internal->tlsext_supportedgroups); 2128 2129 free(ctx->internal->alpn_client_proto_list); 2130 2131 free(ctx->internal); 2132 free(ctx); 2133} 2134 2135int 2136SSL_CTX_up_ref(SSL_CTX *ctx) 2137{ 2138 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2139 return ((refs > 1) ? 1 : 0); 2140} 2141 2142pem_password_cb * 2143SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2144{ 2145 return (ctx->default_passwd_callback); 2146} 2147 2148void 2149SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2150{ 2151 ctx->default_passwd_callback = cb; 2152} 2153 2154void * 2155SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2156{ 2157 return ctx->default_passwd_callback_userdata; 2158} 2159 2160void 2161SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2162{ 2163 ctx->default_passwd_callback_userdata = u; 2164} 2165 2166void 2167SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2168 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2169{ 2170 ctx->internal->app_verify_callback = cb; 2171 ctx->internal->app_verify_arg = arg; 2172} 2173 2174void 2175SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2176{ 2177 ctx->verify_mode = mode; 2178 ctx->internal->default_verify_callback = cb; 2179} 2180 2181void 2182SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2183{ 2184 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2185} 2186 2187void 2188ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2189{ 2190 unsigned long mask_a, mask_k; 2191 SSL_CERT_PKEY *cpk; 2192 2193 if (c == NULL) 2194 return; 2195 2196 mask_a = SSL_aNULL | SSL_aTLS1_3; 2197 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2198 2199 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2200 c->dhe_params_auto != 0) 2201 mask_k |= SSL_kDHE; 2202 2203 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2204 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2205 /* Key usage, if present, must allow signing. */ 2206 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2207 mask_a |= SSL_aECDSA; 2208 } 2209 2210 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2211 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2212 mask_k |= SSL_kGOST; 2213 mask_a |= SSL_aGOST01; 2214 } 2215 2216 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2217 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2218 mask_a |= SSL_aRSA; 2219 mask_k |= SSL_kRSA; 2220 } 2221 2222 c->mask_k = mask_k; 2223 c->mask_a = mask_a; 2224 c->valid = 1; 2225} 2226 2227/* See if this handshake is using an ECC cipher suite. */ 2228int 2229ssl_using_ecc_cipher(SSL *s) 2230{ 2231 unsigned long alg_a, alg_k; 2232 2233 alg_a = s->s3->hs.cipher->algorithm_auth; 2234 alg_k = s->s3->hs.cipher->algorithm_mkey; 2235 2236 return s->session->tlsext_ecpointformatlist != NULL && 2237 s->session->tlsext_ecpointformatlist_length > 0 && 2238 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2239} 2240 2241int 2242ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2243{ 2244 const SSL_CIPHER *cs = s->s3->hs.cipher; 2245 unsigned long alg_a; 2246 2247 alg_a = cs->algorithm_auth; 2248 2249 if (alg_a & SSL_aECDSA) { 2250 /* Key usage, if present, must allow signing. */ 2251 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2252 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2253 return (0); 2254 } 2255 } 2256 2257 return (1); 2258} 2259 2260SSL_CERT_PKEY * 2261ssl_get_server_send_pkey(const SSL *s) 2262{ 2263 unsigned long alg_a; 2264 SSL_CERT *c; 2265 int i; 2266 2267 c = s->cert; 2268 ssl_set_cert_masks(c, s->s3->hs.cipher); 2269 2270 alg_a = s->s3->hs.cipher->algorithm_auth; 2271 2272 if (alg_a & SSL_aECDSA) { 2273 i = SSL_PKEY_ECC; 2274 } else if (alg_a & SSL_aRSA) { 2275 i = SSL_PKEY_RSA; 2276 } else if (alg_a & SSL_aGOST01) { 2277 i = SSL_PKEY_GOST01; 2278 } else { /* if (alg_a & SSL_aNULL) */ 2279 SSLerror(s, ERR_R_INTERNAL_ERROR); 2280 return (NULL); 2281 } 2282 2283 return (c->pkeys + i); 2284} 2285 2286EVP_PKEY * 2287ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2288 const struct ssl_sigalg **sap) 2289{ 2290 const struct ssl_sigalg *sigalg = NULL; 2291 EVP_PKEY *pkey = NULL; 2292 unsigned long alg_a; 2293 SSL_CERT *c; 2294 int idx = -1; 2295 2296 alg_a = cipher->algorithm_auth; 2297 c = s->cert; 2298 2299 if (alg_a & SSL_aRSA) { 2300 idx = SSL_PKEY_RSA; 2301 } else if ((alg_a & SSL_aECDSA) && 2302 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2303 idx = SSL_PKEY_ECC; 2304 if (idx == -1) { 2305 SSLerror(s, ERR_R_INTERNAL_ERROR); 2306 return (NULL); 2307 } 2308 2309 pkey = c->pkeys[idx].privatekey; 2310 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2311 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2312 return (NULL); 2313 } 2314 *pmd = sigalg->md(); 2315 *sap = sigalg; 2316 2317 return (pkey); 2318} 2319 2320size_t 2321ssl_dhe_params_auto_key_bits(SSL *s) 2322{ 2323 SSL_CERT_PKEY *cpk; 2324 int key_bits; 2325 2326 if (s->cert->dhe_params_auto == 2) { 2327 key_bits = 1024; 2328 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2329 key_bits = 1024; 2330 if (s->s3->hs.cipher->strength_bits == 256) 2331 key_bits = 3072; 2332 } else { 2333 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2334 return 0; 2335 if (cpk->privatekey == NULL || 2336 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2337 return 0; 2338 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2339 return 0; 2340 } 2341 2342 return key_bits; 2343} 2344 2345static int 2346ssl_should_update_external_cache(SSL *s, int mode) 2347{ 2348 int cache_mode; 2349 2350 cache_mode = s->session_ctx->internal->session_cache_mode; 2351 2352 /* Don't cache if mode says not to */ 2353 if ((cache_mode & mode) == 0) 2354 return 0; 2355 2356 /* if it is not already cached, cache it */ 2357 if (!s->internal->hit) 2358 return 1; 2359 2360 /* If it's TLS 1.3, do it to match OpenSSL */ 2361 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2362 return 1; 2363 2364 return 0; 2365} 2366 2367static int 2368ssl_should_update_internal_cache(SSL *s, int mode) 2369{ 2370 int cache_mode; 2371 2372 cache_mode = s->session_ctx->internal->session_cache_mode; 2373 2374 /* Don't cache if mode says not to */ 2375 if ((cache_mode & mode) == 0) 2376 return 0; 2377 2378 /* If it is already cached, don't cache it again */ 2379 if (s->internal->hit) 2380 return 0; 2381 2382 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2383 return 0; 2384 2385 /* If we are lesser than TLS 1.3, Cache it. */ 2386 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2387 return 1; 2388 2389 /* Below this we consider TLS 1.3 or later */ 2390 2391 /* If it's not a server, add it? OpenSSL does this. */ 2392 if (!s->server) 2393 return 1; 2394 2395 /* XXX if we support early data / PSK need to add */ 2396 2397 /* 2398 * If we have the remove session callback, we will want 2399 * to know about this even if it's a stateless ticket 2400 * from 1.3 so we can know when it is removed. 2401 */ 2402 if (s->session_ctx->internal->remove_session_cb != NULL) 2403 return 1; 2404 2405 /* If we have set OP_NO_TICKET, cache it. */ 2406 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2407 return 1; 2408 2409 /* Otherwise do not cache */ 2410 return 0; 2411} 2412 2413void 2414ssl_update_cache(SSL *s, int mode) 2415{ 2416 int cache_mode, do_callback; 2417 2418 if (s->session->session_id_length == 0) 2419 return; 2420 2421 cache_mode = s->session_ctx->internal->session_cache_mode; 2422 do_callback = ssl_should_update_external_cache(s, mode); 2423 2424 if (ssl_should_update_internal_cache(s, mode)) { 2425 /* 2426 * XXX should we fail if the add to the internal cache 2427 * fails? OpenSSL doesn't care.. 2428 */ 2429 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2430 } 2431 2432 /* 2433 * Update the "external cache" by calling the new session 2434 * callback if present, even with TLS 1.3 without early data 2435 * "because some application just want to know about the 2436 * creation of a session and aren't doing a full cache". 2437 * Apparently, if they are doing a full cache, they'll have 2438 * some fun, but we endeavour to give application writers the 2439 * same glorious experience they expect from OpenSSL which 2440 * does it this way. 2441 */ 2442 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2443 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2444 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2445 SSL_SESSION_free(s->session); 2446 } 2447 2448 /* Auto flush every 255 connections. */ 2449 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2450 (cache_mode & mode) != 0) { 2451 int connections; 2452 if (mode & SSL_SESS_CACHE_CLIENT) 2453 connections = s->session_ctx->internal->stats.sess_connect_good; 2454 else 2455 connections = s->session_ctx->internal->stats.sess_accept_good; 2456 if ((connections & 0xff) == 0xff) 2457 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2458 } 2459} 2460 2461const SSL_METHOD * 2462SSL_get_ssl_method(SSL *s) 2463{ 2464 return (s->method); 2465} 2466 2467int 2468SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2469{ 2470 int (*handshake_func)(SSL *) = NULL; 2471 int ret = 1; 2472 2473 if (s->method == method) 2474 return (ret); 2475 2476 if (s->internal->handshake_func == s->method->ssl_connect) 2477 handshake_func = method->ssl_connect; 2478 else if (s->internal->handshake_func == s->method->ssl_accept) 2479 handshake_func = method->ssl_accept; 2480 2481 if (s->method->version == method->version) { 2482 s->method = method; 2483 } else { 2484 s->method->ssl_free(s); 2485 s->method = method; 2486 ret = s->method->ssl_new(s); 2487 } 2488 s->internal->handshake_func = handshake_func; 2489 2490 return (ret); 2491} 2492 2493int 2494SSL_get_error(const SSL *s, int i) 2495{ 2496 unsigned long l; 2497 int reason; 2498 BIO *bio; 2499 2500 if (i > 0) 2501 return (SSL_ERROR_NONE); 2502 2503 /* 2504 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2505 * etc, where we do encode the error. 2506 */ 2507 if ((l = ERR_peek_error()) != 0) { 2508 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2509 return (SSL_ERROR_SYSCALL); 2510 else 2511 return (SSL_ERROR_SSL); 2512 } 2513 2514 if (SSL_want_read(s)) { 2515 bio = SSL_get_rbio(s); 2516 if (BIO_should_read(bio)) { 2517 return (SSL_ERROR_WANT_READ); 2518 } else if (BIO_should_write(bio)) { 2519 /* 2520 * This one doesn't make too much sense... We never 2521 * try to write to the rbio, and an application 2522 * program where rbio and wbio are separate couldn't 2523 * even know what it should wait for. However if we 2524 * ever set s->internal->rwstate incorrectly (so that we have 2525 * SSL_want_read(s) instead of SSL_want_write(s)) 2526 * and rbio and wbio *are* the same, this test works 2527 * around that bug; so it might be safer to keep it. 2528 */ 2529 return (SSL_ERROR_WANT_WRITE); 2530 } else if (BIO_should_io_special(bio)) { 2531 reason = BIO_get_retry_reason(bio); 2532 if (reason == BIO_RR_CONNECT) 2533 return (SSL_ERROR_WANT_CONNECT); 2534 else if (reason == BIO_RR_ACCEPT) 2535 return (SSL_ERROR_WANT_ACCEPT); 2536 else 2537 return (SSL_ERROR_SYSCALL); /* unknown */ 2538 } 2539 } 2540 2541 if (SSL_want_write(s)) { 2542 bio = SSL_get_wbio(s); 2543 if (BIO_should_write(bio)) { 2544 return (SSL_ERROR_WANT_WRITE); 2545 } else if (BIO_should_read(bio)) { 2546 /* 2547 * See above (SSL_want_read(s) with 2548 * BIO_should_write(bio)) 2549 */ 2550 return (SSL_ERROR_WANT_READ); 2551 } else if (BIO_should_io_special(bio)) { 2552 reason = BIO_get_retry_reason(bio); 2553 if (reason == BIO_RR_CONNECT) 2554 return (SSL_ERROR_WANT_CONNECT); 2555 else if (reason == BIO_RR_ACCEPT) 2556 return (SSL_ERROR_WANT_ACCEPT); 2557 else 2558 return (SSL_ERROR_SYSCALL); 2559 } 2560 } 2561 2562 if (SSL_want_x509_lookup(s)) 2563 return (SSL_ERROR_WANT_X509_LOOKUP); 2564 2565 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2566 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2567 return (SSL_ERROR_ZERO_RETURN); 2568 2569 return (SSL_ERROR_SYSCALL); 2570} 2571 2572int 2573SSL_do_handshake(SSL *s) 2574{ 2575 if (s->internal->handshake_func == NULL) { 2576 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2577 return (-1); 2578 } 2579 2580 s->method->ssl_renegotiate_check(s); 2581 2582 if (!SSL_in_init(s) && !SSL_in_before(s)) 2583 return 1; 2584 2585 return s->internal->handshake_func(s); 2586} 2587 2588/* 2589 * For the next 2 functions, SSL_clear() sets shutdown and so 2590 * one of these calls will reset it 2591 */ 2592void 2593SSL_set_accept_state(SSL *s) 2594{ 2595 s->server = 1; 2596 s->internal->shutdown = 0; 2597 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2598 s->internal->handshake_func = s->method->ssl_accept; 2599 ssl_clear_cipher_state(s); 2600} 2601 2602void 2603SSL_set_connect_state(SSL *s) 2604{ 2605 s->server = 0; 2606 s->internal->shutdown = 0; 2607 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2608 s->internal->handshake_func = s->method->ssl_connect; 2609 ssl_clear_cipher_state(s); 2610} 2611 2612int 2613ssl_undefined_function(SSL *s) 2614{ 2615 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2616 return (0); 2617} 2618 2619int 2620ssl_undefined_void_function(void) 2621{ 2622 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2623 return (0); 2624} 2625 2626int 2627ssl_undefined_const_function(const SSL *s) 2628{ 2629 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2630 return (0); 2631} 2632 2633const char * 2634ssl_version_string(int ver) 2635{ 2636 switch (ver) { 2637 case TLS1_VERSION: 2638 return (SSL_TXT_TLSV1); 2639 case TLS1_1_VERSION: 2640 return (SSL_TXT_TLSV1_1); 2641 case TLS1_2_VERSION: 2642 return (SSL_TXT_TLSV1_2); 2643 case TLS1_3_VERSION: 2644 return (SSL_TXT_TLSV1_3); 2645 case DTLS1_VERSION: 2646 return (SSL_TXT_DTLS1); 2647 case DTLS1_2_VERSION: 2648 return (SSL_TXT_DTLS1_2); 2649 default: 2650 return ("unknown"); 2651 } 2652} 2653 2654const char * 2655SSL_get_version(const SSL *s) 2656{ 2657 return ssl_version_string(s->version); 2658} 2659 2660SSL * 2661SSL_dup(SSL *s) 2662{ 2663 STACK_OF(X509_NAME) *sk; 2664 X509_NAME *xn; 2665 SSL *ret; 2666 int i; 2667 2668 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2669 goto err; 2670 2671 ret->version = s->version; 2672 ret->method = s->method; 2673 2674 if (s->session != NULL) { 2675 if (!SSL_copy_session_id(ret, s)) 2676 goto err; 2677 } else { 2678 /* 2679 * No session has been established yet, so we have to expect 2680 * that s->cert or ret->cert will be changed later -- 2681 * they should not both point to the same object, 2682 * and thus we can't use SSL_copy_session_id. 2683 */ 2684 2685 ret->method->ssl_free(ret); 2686 ret->method = s->method; 2687 ret->method->ssl_new(ret); 2688 2689 ssl_cert_free(ret->cert); 2690 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2691 goto err; 2692 2693 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2694 s->sid_ctx_length)) 2695 goto err; 2696 } 2697 2698 ret->internal->options = s->internal->options; 2699 ret->internal->mode = s->internal->mode; 2700 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2701 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2702 ret->internal->msg_callback = s->internal->msg_callback; 2703 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2704 SSL_set_verify(ret, SSL_get_verify_mode(s), 2705 SSL_get_verify_callback(s)); 2706 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2707 ret->internal->generate_session_id = s->internal->generate_session_id; 2708 2709 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2710 2711 ret->internal->debug = s->internal->debug; 2712 2713 /* copy app data, a little dangerous perhaps */ 2714 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2715 &ret->internal->ex_data, &s->internal->ex_data)) 2716 goto err; 2717 2718 /* setup rbio, and wbio */ 2719 if (s->rbio != NULL) { 2720 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2721 goto err; 2722 } 2723 if (s->wbio != NULL) { 2724 if (s->wbio != s->rbio) { 2725 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2726 goto err; 2727 } else 2728 ret->wbio = ret->rbio; 2729 } 2730 ret->internal->rwstate = s->internal->rwstate; 2731 ret->internal->in_handshake = s->internal->in_handshake; 2732 ret->internal->handshake_func = s->internal->handshake_func; 2733 ret->server = s->server; 2734 ret->internal->renegotiate = s->internal->renegotiate; 2735 ret->internal->new_session = s->internal->new_session; 2736 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2737 ret->internal->shutdown = s->internal->shutdown; 2738 /* SSL_dup does not really work at any state, though */ 2739 ret->s3->hs.state = s->s3->hs.state; 2740 ret->internal->rstate = s->internal->rstate; 2741 2742 /* 2743 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2744 * ret->init_off 2745 */ 2746 ret->internal->init_num = 0; 2747 2748 ret->internal->hit = s->internal->hit; 2749 2750 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2751 2752 if (s->cipher_list != NULL) { 2753 if ((ret->cipher_list = 2754 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2755 goto err; 2756 } 2757 if (s->internal->cipher_list_tls13 != NULL) { 2758 if ((ret->internal->cipher_list_tls13 = 2759 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2760 goto err; 2761 } 2762 2763 /* Dup the client_CA list */ 2764 if (s->internal->client_CA != NULL) { 2765 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2766 ret->internal->client_CA = sk; 2767 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2768 xn = sk_X509_NAME_value(sk, i); 2769 if (sk_X509_NAME_set(sk, i, 2770 X509_NAME_dup(xn)) == NULL) { 2771 X509_NAME_free(xn); 2772 goto err; 2773 } 2774 } 2775 } 2776 2777 return ret; 2778 err: 2779 SSL_free(ret); 2780 return NULL; 2781} 2782 2783void 2784ssl_clear_cipher_state(SSL *s) 2785{ 2786 tls12_record_layer_clear_read_state(s->internal->rl); 2787 tls12_record_layer_clear_write_state(s->internal->rl); 2788} 2789 2790void 2791ssl_info_callback(const SSL *s, int type, int value) 2792{ 2793 ssl_info_callback_fn *cb; 2794 2795 if ((cb = s->internal->info_callback) == NULL) 2796 cb = s->ctx->internal->info_callback; 2797 if (cb != NULL) 2798 cb(s, type, value); 2799} 2800 2801void 2802ssl_msg_callback(SSL *s, int is_write, int content_type, 2803 const void *msg_buf, size_t msg_len) 2804{ 2805 if (s->internal->msg_callback != NULL) 2806 s->internal->msg_callback(is_write, s->version, content_type, 2807 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2808} 2809 2810/* Fix this function so that it takes an optional type parameter */ 2811X509 * 2812SSL_get_certificate(const SSL *s) 2813{ 2814 return (s->cert->key->x509); 2815} 2816 2817/* Fix this function so that it takes an optional type parameter */ 2818EVP_PKEY * 2819SSL_get_privatekey(const SSL *s) 2820{ 2821 return (s->cert->key->privatekey); 2822} 2823 2824const SSL_CIPHER * 2825SSL_get_current_cipher(const SSL *s) 2826{ 2827 if ((s->session != NULL) && (s->session->cipher != NULL)) 2828 return (s->session->cipher); 2829 return (NULL); 2830} 2831const void * 2832SSL_get_current_compression(SSL *s) 2833{ 2834 return (NULL); 2835} 2836 2837const void * 2838SSL_get_current_expansion(SSL *s) 2839{ 2840 return (NULL); 2841} 2842 2843size_t 2844SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2845{ 2846 size_t len = sizeof(s->s3->client_random); 2847 2848 if (out == NULL) 2849 return len; 2850 2851 if (len > max_out) 2852 len = max_out; 2853 2854 memcpy(out, s->s3->client_random, len); 2855 2856 return len; 2857} 2858 2859size_t 2860SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2861{ 2862 size_t len = sizeof(s->s3->server_random); 2863 2864 if (out == NULL) 2865 return len; 2866 2867 if (len > max_out) 2868 len = max_out; 2869 2870 memcpy(out, s->s3->server_random, len); 2871 2872 return len; 2873} 2874 2875int 2876ssl_init_wbio_buffer(SSL *s, int push) 2877{ 2878 BIO *bbio; 2879 2880 if (s->bbio == NULL) { 2881 bbio = BIO_new(BIO_f_buffer()); 2882 if (bbio == NULL) 2883 return (0); 2884 s->bbio = bbio; 2885 } else { 2886 bbio = s->bbio; 2887 if (s->bbio == s->wbio) 2888 s->wbio = BIO_pop(s->wbio); 2889 } 2890 (void)BIO_reset(bbio); 2891/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2892 if (!BIO_set_read_buffer_size(bbio, 1)) { 2893 SSLerror(s, ERR_R_BUF_LIB); 2894 return (0); 2895 } 2896 if (push) { 2897 if (s->wbio != bbio) 2898 s->wbio = BIO_push(bbio, s->wbio); 2899 } else { 2900 if (s->wbio == bbio) 2901 s->wbio = BIO_pop(bbio); 2902 } 2903 return (1); 2904} 2905 2906void 2907ssl_free_wbio_buffer(SSL *s) 2908{ 2909 if (s == NULL) 2910 return; 2911 2912 if (s->bbio == NULL) 2913 return; 2914 2915 if (s->bbio == s->wbio) { 2916 /* remove buffering */ 2917 s->wbio = BIO_pop(s->wbio); 2918 } 2919 BIO_free(s->bbio); 2920 s->bbio = NULL; 2921} 2922 2923void 2924SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2925{ 2926 ctx->internal->quiet_shutdown = mode; 2927} 2928 2929int 2930SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2931{ 2932 return (ctx->internal->quiet_shutdown); 2933} 2934 2935void 2936SSL_set_quiet_shutdown(SSL *s, int mode) 2937{ 2938 s->internal->quiet_shutdown = mode; 2939} 2940 2941int 2942SSL_get_quiet_shutdown(const SSL *s) 2943{ 2944 return (s->internal->quiet_shutdown); 2945} 2946 2947void 2948SSL_set_shutdown(SSL *s, int mode) 2949{ 2950 s->internal->shutdown = mode; 2951} 2952 2953int 2954SSL_get_shutdown(const SSL *s) 2955{ 2956 return (s->internal->shutdown); 2957} 2958 2959int 2960SSL_version(const SSL *s) 2961{ 2962 return (s->version); 2963} 2964 2965SSL_CTX * 2966SSL_get_SSL_CTX(const SSL *ssl) 2967{ 2968 return (ssl->ctx); 2969} 2970 2971SSL_CTX * 2972SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2973{ 2974 SSL_CERT *new_cert; 2975 2976 if (ctx == NULL) 2977 ctx = ssl->initial_ctx; 2978 if (ssl->ctx == ctx) 2979 return (ssl->ctx); 2980 2981 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2982 return NULL; 2983 ssl_cert_free(ssl->cert); 2984 ssl->cert = new_cert; 2985 2986 SSL_CTX_up_ref(ctx); 2987 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2988 ssl->ctx = ctx; 2989 2990 return (ssl->ctx); 2991} 2992 2993int 2994SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2995{ 2996 return (X509_STORE_set_default_paths(ctx->cert_store)); 2997} 2998 2999int 3000SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3001 const char *CApath) 3002{ 3003 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3004} 3005 3006int 3007SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3008{ 3009 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3010} 3011 3012void 3013SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3014{ 3015 ssl->internal->info_callback = cb; 3016} 3017 3018void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3019{ 3020 return (ssl->internal->info_callback); 3021} 3022 3023int 3024SSL_state(const SSL *ssl) 3025{ 3026 return (ssl->s3->hs.state); 3027} 3028 3029void 3030SSL_set_state(SSL *ssl, int state) 3031{ 3032 ssl->s3->hs.state = state; 3033} 3034 3035void 3036SSL_set_verify_result(SSL *ssl, long arg) 3037{ 3038 ssl->verify_result = arg; 3039} 3040 3041long 3042SSL_get_verify_result(const SSL *ssl) 3043{ 3044 return (ssl->verify_result); 3045} 3046 3047int 3048SSL_verify_client_post_handshake(SSL *ssl) 3049{ 3050 return 0; 3051} 3052 3053void 3054SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3055{ 3056 return; 3057} 3058 3059void 3060SSL_set_post_handshake_auth(SSL *ssl, int val) 3061{ 3062 return; 3063} 3064 3065int 3066SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3067 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3068{ 3069 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3070 new_func, dup_func, free_func)); 3071} 3072 3073int 3074SSL_set_ex_data(SSL *s, int idx, void *arg) 3075{ 3076 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3077} 3078 3079void * 3080SSL_get_ex_data(const SSL *s, int idx) 3081{ 3082 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3083} 3084 3085int 3086SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3087 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3088{ 3089 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3090 new_func, dup_func, free_func)); 3091} 3092 3093int 3094SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3095{ 3096 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3097} 3098 3099void * 3100SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3101{ 3102 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3103} 3104 3105int 3106ssl_ok(SSL *s) 3107{ 3108 return (1); 3109} 3110 3111X509_STORE * 3112SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3113{ 3114 return (ctx->cert_store); 3115} 3116 3117void 3118SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3119{ 3120 X509_STORE_free(ctx->cert_store); 3121 ctx->cert_store = store; 3122} 3123 3124X509 * 3125SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3126{ 3127 if (ctx->internal->cert == NULL) 3128 return NULL; 3129 3130 return ctx->internal->cert->key->x509; 3131} 3132 3133EVP_PKEY * 3134SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3135{ 3136 if (ctx->internal->cert == NULL) 3137 return NULL; 3138 3139 return ctx->internal->cert->key->privatekey; 3140} 3141 3142int 3143SSL_want(const SSL *s) 3144{ 3145 return (s->internal->rwstate); 3146} 3147 3148void 3149SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3150 int keylength)) 3151{ 3152 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3153} 3154 3155void 3156SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3157 int keylength)) 3158{ 3159 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3160} 3161 3162void 3163SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3164 int keylength)) 3165{ 3166 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3167} 3168 3169void 3170SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3171 int keylength)) 3172{ 3173 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3174} 3175 3176void 3177SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3178 int is_export, int keylength)) 3179{ 3180 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3181 (void (*)(void))ecdh); 3182} 3183 3184void 3185SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3186 int keylength)) 3187{ 3188 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3189} 3190 3191 3192void 3193SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3194 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3195{ 3196 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3197 (void (*)(void))cb); 3198} 3199 3200void 3201SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3202 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3203{ 3204 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3205} 3206 3207void 3208SSL_set_debug(SSL *s, int debug) 3209{ 3210 s->internal->debug = debug; 3211} 3212 3213int 3214SSL_cache_hit(SSL *s) 3215{ 3216 return (s->internal->hit); 3217} 3218 3219int 3220SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3221{ 3222 return ctx->internal->min_proto_version; 3223} 3224 3225int 3226SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3227{ 3228 return ssl_version_set_min(ctx->method, version, 3229 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3230 &ctx->internal->min_proto_version); 3231} 3232 3233int 3234SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3235{ 3236 return ctx->internal->max_proto_version; 3237} 3238 3239int 3240SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3241{ 3242 return ssl_version_set_max(ctx->method, version, 3243 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3244 &ctx->internal->max_proto_version); 3245} 3246 3247int 3248SSL_get_min_proto_version(SSL *ssl) 3249{ 3250 return ssl->internal->min_proto_version; 3251} 3252 3253int 3254SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3255{ 3256 return ssl_version_set_min(ssl->method, version, 3257 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3258 &ssl->internal->min_proto_version); 3259} 3260int 3261SSL_get_max_proto_version(SSL *ssl) 3262{ 3263 return ssl->internal->max_proto_version; 3264} 3265 3266int 3267SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3268{ 3269 return ssl_version_set_max(ssl->method, version, 3270 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3271 &ssl->internal->max_proto_version); 3272} 3273 3274const SSL_METHOD * 3275SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3276{ 3277 return ctx->method; 3278} 3279 3280int 3281SSL_CTX_get_security_level(const SSL_CTX *ctx) 3282{ 3283 return ctx->internal->cert->security_level; 3284} 3285 3286void 3287SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3288{ 3289 ctx->internal->cert->security_level = level; 3290} 3291 3292int 3293SSL_get_security_level(const SSL *ssl) 3294{ 3295 return ssl->cert->security_level; 3296} 3297 3298void 3299SSL_set_security_level(SSL *ssl, int level) 3300{ 3301 ssl->cert->security_level = level; 3302} 3303 3304static int 3305ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3306{ 3307 SSL_CIPHER const *a = a_; 3308 SSL_CIPHER const *b = b_; 3309 return ssl_cipher_id_cmp(a, b); 3310} 3311 3312SSL_CIPHER * 3313OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3314{ 3315 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3316 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3317} 3318 3319int 3320SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3321 size_t params_len) 3322{ 3323 freezero(ssl->internal->quic_transport_params, 3324 ssl->internal->quic_transport_params_len); 3325 ssl->internal->quic_transport_params = NULL; 3326 ssl->internal->quic_transport_params_len = 0; 3327 3328 if ((ssl->internal->quic_transport_params = malloc(params_len)) == NULL) 3329 return 0; 3330 3331 memcpy(ssl->internal->quic_transport_params, params, params_len); 3332 ssl->internal->quic_transport_params_len = params_len; 3333 3334 return 1; 3335} 3336 3337void 3338SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3339 size_t *out_params_len) 3340{ 3341 *out_params = ssl->s3->peer_quic_transport_params; 3342 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3343} 3344