ssl_lib.c revision 1.277
1/* $OpenBSD: ssl_lib.c,v 1.277 2021/10/31 16:37:25 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/limits.h> 145#include <sys/socket.h> 146#include <netinet/in.h> 147 148#include <stdio.h> 149 150#include <openssl/bn.h> 151#include <openssl/dh.h> 152#include <openssl/lhash.h> 153#include <openssl/objects.h> 154#include <openssl/ocsp.h> 155#include <openssl/opensslconf.h> 156#include <openssl/x509v3.h> 157 158#ifndef OPENSSL_NO_ENGINE 159#include <openssl/engine.h> 160#endif 161 162#include "bytestring.h" 163#include "dtls_locl.h" 164#include "ssl_locl.h" 165#include "ssl_sigalgs.h" 166 167const char *SSL_version_str = OPENSSL_VERSION_TEXT; 168 169int 170SSL_clear(SSL *s) 171{ 172 if (s->method == NULL) { 173 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 174 return (0); 175 } 176 177 if (ssl_clear_bad_session(s)) { 178 SSL_SESSION_free(s->session); 179 s->session = NULL; 180 } 181 182 s->error = 0; 183 s->internal->hit = 0; 184 s->internal->shutdown = 0; 185 186 if (s->internal->renegotiate) { 187 SSLerror(s, ERR_R_INTERNAL_ERROR); 188 return (0); 189 } 190 191 s->version = s->method->version; 192 s->client_version = s->version; 193 s->internal->rwstate = SSL_NOTHING; 194 s->internal->rstate = SSL_ST_READ_HEADER; 195 196 tls13_ctx_free(s->internal->tls13); 197 s->internal->tls13 = NULL; 198 199 ssl3_release_init_buffer(s); 200 201 ssl_clear_cipher_state(s); 202 203 s->internal->first_packet = 0; 204 205 /* 206 * Check to see if we were changed into a different method, if 207 * so, revert back if we are not doing session-id reuse. 208 */ 209 if (!s->internal->in_handshake && (s->session == NULL) && 210 (s->method != s->ctx->method)) { 211 s->method->ssl_free(s); 212 s->method = s->ctx->method; 213 if (!s->method->ssl_new(s)) 214 return (0); 215 } else 216 s->method->ssl_clear(s); 217 218 return (1); 219} 220 221/* Used to change an SSL_CTXs default SSL method type */ 222int 223SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 224{ 225 STACK_OF(SSL_CIPHER) *ciphers; 226 227 ctx->method = meth; 228 229 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 230 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 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#ifndef OPENSSL_NO_SRTP 578 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 579#endif 580 581 tls12_record_layer_free(s->internal->rl); 582 583 free(s->internal); 584 free(s); 585} 586 587int 588SSL_up_ref(SSL *s) 589{ 590 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 591 return (refs > 1) ? 1 : 0; 592} 593 594void 595SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 596{ 597 /* If the output buffering BIO is still in place, remove it */ 598 if (s->bbio != NULL) { 599 if (s->wbio == s->bbio) { 600 s->wbio = s->wbio->next_bio; 601 s->bbio->next_bio = NULL; 602 } 603 } 604 605 if (s->rbio != rbio && s->rbio != s->wbio) 606 BIO_free_all(s->rbio); 607 if (s->wbio != wbio) 608 BIO_free_all(s->wbio); 609 s->rbio = rbio; 610 s->wbio = wbio; 611} 612 613BIO * 614SSL_get_rbio(const SSL *s) 615{ 616 return (s->rbio); 617} 618 619void 620SSL_set0_rbio(SSL *s, BIO *rbio) 621{ 622 BIO_free_all(s->rbio); 623 s->rbio = rbio; 624} 625 626BIO * 627SSL_get_wbio(const SSL *s) 628{ 629 return (s->wbio); 630} 631 632int 633SSL_get_fd(const SSL *s) 634{ 635 return (SSL_get_rfd(s)); 636} 637 638int 639SSL_get_rfd(const SSL *s) 640{ 641 int ret = -1; 642 BIO *b, *r; 643 644 b = SSL_get_rbio(s); 645 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 646 if (r != NULL) 647 BIO_get_fd(r, &ret); 648 return (ret); 649} 650 651int 652SSL_get_wfd(const SSL *s) 653{ 654 int ret = -1; 655 BIO *b, *r; 656 657 b = SSL_get_wbio(s); 658 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 659 if (r != NULL) 660 BIO_get_fd(r, &ret); 661 return (ret); 662} 663 664int 665SSL_set_fd(SSL *s, int fd) 666{ 667 int ret = 0; 668 BIO *bio = NULL; 669 670 bio = BIO_new(BIO_s_socket()); 671 672 if (bio == NULL) { 673 SSLerror(s, ERR_R_BUF_LIB); 674 goto err; 675 } 676 BIO_set_fd(bio, fd, BIO_NOCLOSE); 677 SSL_set_bio(s, bio, bio); 678 ret = 1; 679 err: 680 return (ret); 681} 682 683int 684SSL_set_wfd(SSL *s, int fd) 685{ 686 int ret = 0; 687 BIO *bio = NULL; 688 689 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 690 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 691 bio = BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) { 694 SSLerror(s, ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, SSL_get_rbio(s), bio); 699 } else 700 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 701 ret = 1; 702 err: 703 return (ret); 704} 705 706int 707SSL_set_rfd(SSL *s, int fd) 708{ 709 int ret = 0; 710 BIO *bio = NULL; 711 712 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 713 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 714 bio = BIO_new(BIO_s_socket()); 715 716 if (bio == NULL) { 717 SSLerror(s, ERR_R_BUF_LIB); 718 goto err; 719 } 720 BIO_set_fd(bio, fd, BIO_NOCLOSE); 721 SSL_set_bio(s, bio, SSL_get_wbio(s)); 722 } else 723 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 724 ret = 1; 725 err: 726 return (ret); 727} 728 729 730/* return length of latest Finished message we sent, copy to 'buf' */ 731size_t 732SSL_get_finished(const SSL *s, void *buf, size_t count) 733{ 734 size_t ret; 735 736 ret = S3I(s)->hs.finished_len; 737 if (count > ret) 738 count = ret; 739 memcpy(buf, S3I(s)->hs.finished, count); 740 return (ret); 741} 742 743/* return length of latest Finished message we expected, copy to 'buf' */ 744size_t 745SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 746{ 747 size_t ret; 748 749 ret = S3I(s)->hs.peer_finished_len; 750 if (count > ret) 751 count = ret; 752 memcpy(buf, S3I(s)->hs.peer_finished, count); 753 return (ret); 754} 755 756 757int 758SSL_get_verify_mode(const SSL *s) 759{ 760 return (s->verify_mode); 761} 762 763int 764SSL_get_verify_depth(const SSL *s) 765{ 766 return (X509_VERIFY_PARAM_get_depth(s->param)); 767} 768 769int 770(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 771{ 772 return (s->internal->verify_callback); 773} 774 775void 776SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 777{ 778 ctx->internal->keylog_callback = cb; 779} 780 781SSL_CTX_keylog_cb_func 782SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 783{ 784 return (ctx->internal->keylog_callback); 785} 786 787int 788SSL_set_num_tickets(SSL *s, size_t num_tickets) 789{ 790 s->internal->num_tickets = num_tickets; 791 792 return 1; 793} 794 795size_t 796SSL_get_num_tickets(const SSL *s) 797{ 798 return s->internal->num_tickets; 799} 800 801int 802SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 803{ 804 ctx->internal->num_tickets = num_tickets; 805 806 return 1; 807} 808 809size_t 810SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 811{ 812 return ctx->internal->num_tickets; 813} 814 815int 816SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 817{ 818 return (ctx->verify_mode); 819} 820 821int 822SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 823{ 824 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 825} 826 827int 828(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 829{ 830 return (ctx->internal->default_verify_callback); 831} 832 833void 834SSL_set_verify(SSL *s, int mode, 835 int (*callback)(int ok, X509_STORE_CTX *ctx)) 836{ 837 s->verify_mode = mode; 838 if (callback != NULL) 839 s->internal->verify_callback = callback; 840} 841 842void 843SSL_set_verify_depth(SSL *s, int depth) 844{ 845 X509_VERIFY_PARAM_set_depth(s->param, depth); 846} 847 848void 849SSL_set_read_ahead(SSL *s, int yes) 850{ 851 s->internal->read_ahead = yes; 852} 853 854int 855SSL_get_read_ahead(const SSL *s) 856{ 857 return (s->internal->read_ahead); 858} 859 860int 861SSL_pending(const SSL *s) 862{ 863 return (s->method->ssl_pending(s)); 864} 865 866X509 * 867SSL_get_peer_certificate(const SSL *s) 868{ 869 X509 *r; 870 871 if ((s == NULL) || (s->session == NULL)) 872 r = NULL; 873 else 874 r = s->session->peer; 875 876 if (r == NULL) 877 return (r); 878 879 X509_up_ref(r); 880 881 return (r); 882} 883 884STACK_OF(X509) * 885SSL_get_peer_cert_chain(const SSL *s) 886{ 887 STACK_OF(X509) *r; 888 889 if ((s == NULL) || (s->session == NULL) || 890 (s->session->sess_cert == NULL)) 891 r = NULL; 892 else 893 r = s->session->sess_cert->cert_chain; 894 895 /* 896 * If we are a client, cert_chain includes the peer's own 897 * certificate; 898 * if we are a server, it does not. 899 */ 900 return (r); 901} 902 903STACK_OF(X509) * 904SSL_get0_verified_chain(const SSL *s) 905{ 906 return s->internal->verified_chain; 907} 908 909/* 910 * Now in theory, since the calling process own 't' it should be safe to 911 * modify. We need to be able to read f without being hassled 912 */ 913int 914SSL_copy_session_id(SSL *t, const SSL *f) 915{ 916 CERT *tmp; 917 918 /* Do we need to do SSL locking? */ 919 if (!SSL_set_session(t, SSL_get_session(f))) 920 return 0; 921 922 /* What if we are set up for one protocol but want to talk another? */ 923 if (t->method != f->method) { 924 t->method->ssl_free(t); 925 t->method = f->method; 926 if (!t->method->ssl_new(t)) 927 return 0; 928 } 929 930 tmp = t->cert; 931 if (f->cert != NULL) { 932 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 933 t->cert = f->cert; 934 } else 935 t->cert = NULL; 936 ssl_cert_free(tmp); 937 938 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 939 return 0; 940 941 return 1; 942} 943 944/* Fix this so it checks all the valid key/cert options */ 945int 946SSL_CTX_check_private_key(const SSL_CTX *ctx) 947{ 948 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 949 (ctx->internal->cert->key->x509 == NULL)) { 950 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 951 return (0); 952 } 953 if (ctx->internal->cert->key->privatekey == NULL) { 954 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 955 return (0); 956 } 957 return (X509_check_private_key(ctx->internal->cert->key->x509, 958 ctx->internal->cert->key->privatekey)); 959} 960 961/* Fix this function so that it takes an optional type parameter */ 962int 963SSL_check_private_key(const SSL *ssl) 964{ 965 if (ssl == NULL) { 966 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 967 return (0); 968 } 969 if (ssl->cert == NULL) { 970 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 971 return (0); 972 } 973 if (ssl->cert->key->x509 == NULL) { 974 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 975 return (0); 976 } 977 if (ssl->cert->key->privatekey == NULL) { 978 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 979 return (0); 980 } 981 return (X509_check_private_key(ssl->cert->key->x509, 982 ssl->cert->key->privatekey)); 983} 984 985int 986SSL_accept(SSL *s) 987{ 988 if (s->internal->handshake_func == NULL) 989 SSL_set_accept_state(s); /* Not properly initialized yet */ 990 991 return (s->method->ssl_accept(s)); 992} 993 994int 995SSL_connect(SSL *s) 996{ 997 if (s->internal->handshake_func == NULL) 998 SSL_set_connect_state(s); /* Not properly initialized yet */ 999 1000 return (s->method->ssl_connect(s)); 1001} 1002 1003int 1004SSL_is_dtls(const SSL *s) 1005{ 1006 return s->method->dtls; 1007} 1008 1009int 1010SSL_is_server(const SSL *s) 1011{ 1012 return s->server; 1013} 1014 1015static long 1016ssl_get_default_timeout() 1017{ 1018 /* 1019 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1020 * is way too long for http, the cache would over fill. 1021 */ 1022 return (2 * 60 * 60); 1023} 1024 1025long 1026SSL_get_default_timeout(const SSL *s) 1027{ 1028 return (ssl_get_default_timeout()); 1029} 1030 1031int 1032SSL_read(SSL *s, void *buf, int num) 1033{ 1034 if (num < 0) { 1035 SSLerror(s, SSL_R_BAD_LENGTH); 1036 return -1; 1037 } 1038 1039 if (s->internal->handshake_func == NULL) { 1040 SSLerror(s, SSL_R_UNINITIALIZED); 1041 return (-1); 1042 } 1043 1044 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1045 s->internal->rwstate = SSL_NOTHING; 1046 return (0); 1047 } 1048 return ssl3_read(s, buf, num); 1049} 1050 1051int 1052SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1053{ 1054 int ret; 1055 1056 /* We simply don't bother supporting enormous reads */ 1057 if (num > INT_MAX) { 1058 SSLerror(s, SSL_R_BAD_LENGTH); 1059 return 0; 1060 } 1061 1062 ret = SSL_read(s, buf, (int)num); 1063 if (ret < 0) 1064 ret = 0; 1065 *bytes_read = ret; 1066 1067 return ret > 0; 1068} 1069 1070int 1071SSL_peek(SSL *s, void *buf, int num) 1072{ 1073 if (num < 0) { 1074 SSLerror(s, SSL_R_BAD_LENGTH); 1075 return -1; 1076 } 1077 1078 if (s->internal->handshake_func == NULL) { 1079 SSLerror(s, SSL_R_UNINITIALIZED); 1080 return (-1); 1081 } 1082 1083 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1084 return (0); 1085 } 1086 return ssl3_peek(s, buf, num); 1087} 1088 1089int 1090SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1091{ 1092 int ret; 1093 1094 /* We simply don't bother supporting enormous peeks */ 1095 if (num > INT_MAX) { 1096 SSLerror(s, SSL_R_BAD_LENGTH); 1097 return 0; 1098 } 1099 1100 ret = SSL_peek(s, buf, (int)num); 1101 if (ret < 0) 1102 ret = 0; 1103 *bytes_peeked = ret; 1104 1105 return ret > 0; 1106} 1107 1108int 1109SSL_write(SSL *s, const void *buf, int num) 1110{ 1111 if (num < 0) { 1112 SSLerror(s, SSL_R_BAD_LENGTH); 1113 return -1; 1114 } 1115 1116 if (s->internal->handshake_func == NULL) { 1117 SSLerror(s, SSL_R_UNINITIALIZED); 1118 return (-1); 1119 } 1120 1121 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1122 s->internal->rwstate = SSL_NOTHING; 1123 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1124 return (-1); 1125 } 1126 return ssl3_write(s, buf, num); 1127} 1128 1129int 1130SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1131{ 1132 int ret; 1133 1134 /* We simply don't bother supporting enormous writes */ 1135 if (num > INT_MAX) { 1136 SSLerror(s, SSL_R_BAD_LENGTH); 1137 return 0; 1138 } 1139 1140 if (num == 0) { 1141 /* This API is special */ 1142 bytes_written = 0; 1143 return 1; 1144 } 1145 1146 ret = SSL_write(s, buf, (int)num); 1147 if (ret < 0) 1148 ret = 0; 1149 *bytes_written = ret; 1150 1151 return ret > 0; 1152} 1153 1154uint32_t 1155SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1156{ 1157 return 0; 1158} 1159 1160int 1161SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1162{ 1163 return 1; 1164} 1165 1166uint32_t 1167SSL_get_max_early_data(const SSL *s) 1168{ 1169 return 0; 1170} 1171 1172int 1173SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1174{ 1175 return 1; 1176} 1177 1178int 1179SSL_get_early_data_status(const SSL *s) 1180{ 1181 return SSL_EARLY_DATA_REJECTED; 1182} 1183 1184int 1185SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1186{ 1187 *readbytes = 0; 1188 1189 if (!s->server) { 1190 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1191 return SSL_READ_EARLY_DATA_ERROR; 1192 } 1193 1194 return SSL_READ_EARLY_DATA_FINISH; 1195} 1196 1197int 1198SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1199{ 1200 *written = 0; 1201 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1202 return 0; 1203} 1204 1205int 1206SSL_shutdown(SSL *s) 1207{ 1208 /* 1209 * Note that this function behaves differently from what one might 1210 * expect. Return values are 0 for no success (yet), 1211 * 1 for success; but calling it once is usually not enough, 1212 * even if blocking I/O is used (see ssl3_shutdown). 1213 */ 1214 1215 if (s->internal->handshake_func == NULL) { 1216 SSLerror(s, SSL_R_UNINITIALIZED); 1217 return (-1); 1218 } 1219 1220 if (s != NULL && !SSL_in_init(s)) 1221 return (s->method->ssl_shutdown(s)); 1222 1223 return (1); 1224} 1225 1226int 1227SSL_renegotiate(SSL *s) 1228{ 1229 if (s->internal->renegotiate == 0) 1230 s->internal->renegotiate = 1; 1231 1232 s->internal->new_session = 1; 1233 1234 return (s->method->ssl_renegotiate(s)); 1235} 1236 1237int 1238SSL_renegotiate_abbreviated(SSL *s) 1239{ 1240 if (s->internal->renegotiate == 0) 1241 s->internal->renegotiate = 1; 1242 1243 s->internal->new_session = 0; 1244 1245 return (s->method->ssl_renegotiate(s)); 1246} 1247 1248int 1249SSL_renegotiate_pending(SSL *s) 1250{ 1251 /* 1252 * Becomes true when negotiation is requested; 1253 * false again once a handshake has finished. 1254 */ 1255 return (s->internal->renegotiate != 0); 1256} 1257 1258long 1259SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1260{ 1261 long l; 1262 1263 switch (cmd) { 1264 case SSL_CTRL_GET_READ_AHEAD: 1265 return (s->internal->read_ahead); 1266 case SSL_CTRL_SET_READ_AHEAD: 1267 l = s->internal->read_ahead; 1268 s->internal->read_ahead = larg; 1269 return (l); 1270 1271 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1272 s->internal->msg_callback_arg = parg; 1273 return (1); 1274 1275 case SSL_CTRL_OPTIONS: 1276 return (s->internal->options|=larg); 1277 case SSL_CTRL_CLEAR_OPTIONS: 1278 return (s->internal->options&=~larg); 1279 case SSL_CTRL_MODE: 1280 return (s->internal->mode|=larg); 1281 case SSL_CTRL_CLEAR_MODE: 1282 return (s->internal->mode &=~larg); 1283 case SSL_CTRL_GET_MAX_CERT_LIST: 1284 return (s->internal->max_cert_list); 1285 case SSL_CTRL_SET_MAX_CERT_LIST: 1286 l = s->internal->max_cert_list; 1287 s->internal->max_cert_list = larg; 1288 return (l); 1289 case SSL_CTRL_SET_MTU: 1290#ifndef OPENSSL_NO_DTLS1 1291 if (larg < (long)dtls1_min_mtu()) 1292 return (0); 1293#endif 1294 if (SSL_is_dtls(s)) { 1295 s->d1->mtu = larg; 1296 return (larg); 1297 } 1298 return (0); 1299 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1300 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1301 return (0); 1302 s->max_send_fragment = larg; 1303 return (1); 1304 case SSL_CTRL_GET_RI_SUPPORT: 1305 if (s->s3) 1306 return (S3I(s)->send_connection_binding); 1307 else return (0); 1308 default: 1309 if (SSL_is_dtls(s)) 1310 return dtls1_ctrl(s, cmd, larg, parg); 1311 return ssl3_ctrl(s, cmd, larg, parg); 1312 } 1313} 1314 1315long 1316SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1317{ 1318 switch (cmd) { 1319 case SSL_CTRL_SET_MSG_CALLBACK: 1320 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1321 return (1); 1322 1323 default: 1324 return (ssl3_callback_ctrl(s, cmd, fp)); 1325 } 1326} 1327 1328struct lhash_st_SSL_SESSION * 1329SSL_CTX_sessions(SSL_CTX *ctx) 1330{ 1331 return (ctx->internal->sessions); 1332} 1333 1334long 1335SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1336{ 1337 long l; 1338 1339 switch (cmd) { 1340 case SSL_CTRL_GET_READ_AHEAD: 1341 return (ctx->internal->read_ahead); 1342 case SSL_CTRL_SET_READ_AHEAD: 1343 l = ctx->internal->read_ahead; 1344 ctx->internal->read_ahead = larg; 1345 return (l); 1346 1347 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1348 ctx->internal->msg_callback_arg = parg; 1349 return (1); 1350 1351 case SSL_CTRL_GET_MAX_CERT_LIST: 1352 return (ctx->internal->max_cert_list); 1353 case SSL_CTRL_SET_MAX_CERT_LIST: 1354 l = ctx->internal->max_cert_list; 1355 ctx->internal->max_cert_list = larg; 1356 return (l); 1357 1358 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1359 l = ctx->internal->session_cache_size; 1360 ctx->internal->session_cache_size = larg; 1361 return (l); 1362 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1363 return (ctx->internal->session_cache_size); 1364 case SSL_CTRL_SET_SESS_CACHE_MODE: 1365 l = ctx->internal->session_cache_mode; 1366 ctx->internal->session_cache_mode = larg; 1367 return (l); 1368 case SSL_CTRL_GET_SESS_CACHE_MODE: 1369 return (ctx->internal->session_cache_mode); 1370 1371 case SSL_CTRL_SESS_NUMBER: 1372 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1373 case SSL_CTRL_SESS_CONNECT: 1374 return (ctx->internal->stats.sess_connect); 1375 case SSL_CTRL_SESS_CONNECT_GOOD: 1376 return (ctx->internal->stats.sess_connect_good); 1377 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1378 return (ctx->internal->stats.sess_connect_renegotiate); 1379 case SSL_CTRL_SESS_ACCEPT: 1380 return (ctx->internal->stats.sess_accept); 1381 case SSL_CTRL_SESS_ACCEPT_GOOD: 1382 return (ctx->internal->stats.sess_accept_good); 1383 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1384 return (ctx->internal->stats.sess_accept_renegotiate); 1385 case SSL_CTRL_SESS_HIT: 1386 return (ctx->internal->stats.sess_hit); 1387 case SSL_CTRL_SESS_CB_HIT: 1388 return (ctx->internal->stats.sess_cb_hit); 1389 case SSL_CTRL_SESS_MISSES: 1390 return (ctx->internal->stats.sess_miss); 1391 case SSL_CTRL_SESS_TIMEOUTS: 1392 return (ctx->internal->stats.sess_timeout); 1393 case SSL_CTRL_SESS_CACHE_FULL: 1394 return (ctx->internal->stats.sess_cache_full); 1395 case SSL_CTRL_OPTIONS: 1396 return (ctx->internal->options|=larg); 1397 case SSL_CTRL_CLEAR_OPTIONS: 1398 return (ctx->internal->options&=~larg); 1399 case SSL_CTRL_MODE: 1400 return (ctx->internal->mode|=larg); 1401 case SSL_CTRL_CLEAR_MODE: 1402 return (ctx->internal->mode&=~larg); 1403 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1404 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1405 return (0); 1406 ctx->internal->max_send_fragment = larg; 1407 return (1); 1408 default: 1409 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1410 } 1411} 1412 1413long 1414SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1415{ 1416 switch (cmd) { 1417 case SSL_CTRL_SET_MSG_CALLBACK: 1418 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1419 return (1); 1420 1421 default: 1422 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1423 } 1424} 1425 1426int 1427ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1428{ 1429 long l; 1430 1431 l = a->id - b->id; 1432 if (l == 0L) 1433 return (0); 1434 else 1435 return ((l > 0) ? 1:-1); 1436} 1437 1438STACK_OF(SSL_CIPHER) * 1439SSL_get_ciphers(const SSL *s) 1440{ 1441 if (s == NULL) 1442 return (NULL); 1443 if (s->cipher_list != NULL) 1444 return (s->cipher_list); 1445 1446 return (s->ctx->cipher_list); 1447} 1448 1449STACK_OF(SSL_CIPHER) * 1450SSL_get_client_ciphers(const SSL *s) 1451{ 1452 if (s == NULL || s->session == NULL || !s->server) 1453 return NULL; 1454 return s->session->ciphers; 1455} 1456 1457STACK_OF(SSL_CIPHER) * 1458SSL_get1_supported_ciphers(SSL *s) 1459{ 1460 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1461 const SSL_CIPHER *cipher; 1462 uint16_t min_vers, max_vers; 1463 int i; 1464 1465 if (s == NULL) 1466 return NULL; 1467 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1468 return NULL; 1469 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1470 return NULL; 1471 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1472 return NULL; 1473 1474 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1475 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1476 goto err; 1477 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1478 max_vers)) 1479 continue; 1480 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1481 goto err; 1482 } 1483 1484 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1485 return supported_ciphers; 1486 1487 err: 1488 sk_SSL_CIPHER_free(supported_ciphers); 1489 return NULL; 1490} 1491 1492/* See if we have any ECC cipher suites. */ 1493int 1494ssl_has_ecc_ciphers(SSL *s) 1495{ 1496 STACK_OF(SSL_CIPHER) *ciphers; 1497 unsigned long alg_k, alg_a; 1498 SSL_CIPHER *cipher; 1499 int i; 1500 1501 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1502 return 0; 1503 1504 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1505 cipher = sk_SSL_CIPHER_value(ciphers, i); 1506 1507 alg_k = cipher->algorithm_mkey; 1508 alg_a = cipher->algorithm_auth; 1509 1510 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1511 return 1; 1512 } 1513 1514 return 0; 1515} 1516 1517/* The old interface to get the same thing as SSL_get_ciphers(). */ 1518const char * 1519SSL_get_cipher_list(const SSL *s, int n) 1520{ 1521 STACK_OF(SSL_CIPHER) *ciphers; 1522 const SSL_CIPHER *cipher; 1523 1524 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1525 return (NULL); 1526 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1527 return (NULL); 1528 1529 return (cipher->name); 1530} 1531 1532STACK_OF(SSL_CIPHER) * 1533SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1534{ 1535 if (ctx == NULL) 1536 return NULL; 1537 return ctx->cipher_list; 1538} 1539 1540/* Specify the ciphers to be used by default by the SSL_CTX. */ 1541int 1542SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1543{ 1544 STACK_OF(SSL_CIPHER) *ciphers; 1545 1546 /* 1547 * ssl_create_cipher_list may return an empty stack if it was unable to 1548 * find a cipher matching the given rule string (for example if the 1549 * rule string specifies a cipher which has been disabled). This is not 1550 * an error as far as ssl_create_cipher_list is concerned, and hence 1551 * ctx->cipher_list has been updated. 1552 */ 1553 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1554 ctx->internal->cipher_list_tls13, str); 1555 if (ciphers == NULL) { 1556 return (0); 1557 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1558 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1559 return (0); 1560 } 1561 return (1); 1562} 1563 1564int 1565SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1566{ 1567 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1568 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1569 return 0; 1570 } 1571 if (!ssl_merge_cipherlists(ctx->cipher_list, 1572 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1573 return 0; 1574 1575 return 1; 1576} 1577 1578/* Specify the ciphers to be used by the SSL. */ 1579int 1580SSL_set_cipher_list(SSL *s, const char *str) 1581{ 1582 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1583 1584 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1585 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1586 1587 /* See comment in SSL_CTX_set_cipher_list. */ 1588 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1589 ciphers_tls13, str); 1590 if (ciphers == NULL) { 1591 return (0); 1592 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1593 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1594 return (0); 1595 } 1596 return (1); 1597} 1598 1599int 1600SSL_set_ciphersuites(SSL *s, const char *str) 1601{ 1602 STACK_OF(SSL_CIPHER) *ciphers; 1603 1604 if ((ciphers = s->cipher_list) == NULL) 1605 ciphers = s->ctx->cipher_list; 1606 1607 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1608 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1609 return (0); 1610 } 1611 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1612 &s->cipher_list)) 1613 return 0; 1614 1615 return 1; 1616} 1617 1618char * 1619SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1620{ 1621 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1622 const SSL_CIPHER *cipher; 1623 size_t curlen = 0; 1624 char *end; 1625 int i; 1626 1627 if (!s->server || s->session == NULL || len < 2) 1628 return NULL; 1629 1630 if ((client_ciphers = s->session->ciphers) == NULL) 1631 return NULL; 1632 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1633 return NULL; 1634 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1635 sk_SSL_CIPHER_num(server_ciphers) == 0) 1636 return NULL; 1637 1638 buf[0] = '\0'; 1639 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1640 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1641 1642 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1643 continue; 1644 1645 end = buf + curlen; 1646 if (strlcat(buf, cipher->name, len) >= len || 1647 (curlen = strlcat(buf, ":", len)) >= len) { 1648 /* remove truncated cipher from list */ 1649 *end = '\0'; 1650 break; 1651 } 1652 } 1653 /* remove trailing colon */ 1654 if ((end = strrchr(buf, ':')) != NULL) 1655 *end = '\0'; 1656 return buf; 1657} 1658 1659/* 1660 * Return a servername extension value if provided in Client Hello, or NULL. 1661 * So far, only host_name types are defined (RFC 3546). 1662 */ 1663const char * 1664SSL_get_servername(const SSL *s, const int type) 1665{ 1666 if (type != TLSEXT_NAMETYPE_host_name) 1667 return (NULL); 1668 1669 return (s->session && !s->tlsext_hostname ? 1670 s->session->tlsext_hostname : 1671 s->tlsext_hostname); 1672} 1673 1674int 1675SSL_get_servername_type(const SSL *s) 1676{ 1677 if (s->session && 1678 (!s->tlsext_hostname ? 1679 s->session->tlsext_hostname : s->tlsext_hostname)) 1680 return (TLSEXT_NAMETYPE_host_name); 1681 return (-1); 1682} 1683 1684/* 1685 * SSL_select_next_proto implements standard protocol selection. It is 1686 * expected that this function is called from the callback set by 1687 * SSL_CTX_set_alpn_select_cb. 1688 * 1689 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1690 * strings. The length byte itself is not included in the length. A byte 1691 * string of length 0 is invalid. No byte string may be truncated. 1692 * 1693 * It returns either: 1694 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1695 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1696 */ 1697int 1698SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1699 const unsigned char *server, unsigned int server_len, 1700 const unsigned char *client, unsigned int client_len) 1701{ 1702 unsigned int i, j; 1703 const unsigned char *result; 1704 int status = OPENSSL_NPN_UNSUPPORTED; 1705 1706 /* 1707 * For each protocol in server preference order, 1708 * see if we support it. 1709 */ 1710 for (i = 0; i < server_len; ) { 1711 for (j = 0; j < client_len; ) { 1712 if (server[i] == client[j] && 1713 memcmp(&server[i + 1], 1714 &client[j + 1], server[i]) == 0) { 1715 /* We found a match */ 1716 result = &server[i]; 1717 status = OPENSSL_NPN_NEGOTIATED; 1718 goto found; 1719 } 1720 j += client[j]; 1721 j++; 1722 } 1723 i += server[i]; 1724 i++; 1725 } 1726 1727 /* There's no overlap between our protocols and the server's list. */ 1728 result = client; 1729 status = OPENSSL_NPN_NO_OVERLAP; 1730 1731 found: 1732 *out = (unsigned char *) result + 1; 1733 *outlen = result[0]; 1734 return (status); 1735} 1736 1737/* SSL_get0_next_proto_negotiated is deprecated. */ 1738void 1739SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1740 unsigned int *len) 1741{ 1742 *data = NULL; 1743 *len = 0; 1744} 1745 1746/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1747void 1748SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1749 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1750{ 1751} 1752 1753/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1754void 1755SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1756 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1757 unsigned int inlen, void *arg), void *arg) 1758{ 1759} 1760 1761/* 1762 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1763 * protocols, which must be in wire-format (i.e. a series of non-empty, 1764 * 8-bit length-prefixed strings). Returns 0 on success. 1765 */ 1766int 1767SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1768 unsigned int protos_len) 1769{ 1770 int failed = 1; 1771 1772 if (protos == NULL || protos_len == 0) 1773 goto err; 1774 1775 free(ctx->internal->alpn_client_proto_list); 1776 ctx->internal->alpn_client_proto_list = NULL; 1777 ctx->internal->alpn_client_proto_list_len = 0; 1778 1779 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1780 == NULL) 1781 goto err; 1782 ctx->internal->alpn_client_proto_list_len = protos_len; 1783 1784 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1785 1786 failed = 0; 1787 1788 err: 1789 /* NOTE: Return values are the reverse of what you expect. */ 1790 return (failed); 1791} 1792 1793/* 1794 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1795 * protocols, which must be in wire-format (i.e. a series of non-empty, 1796 * 8-bit length-prefixed strings). Returns 0 on success. 1797 */ 1798int 1799SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1800 unsigned int protos_len) 1801{ 1802 int failed = 1; 1803 1804 if (protos == NULL || protos_len == 0) 1805 goto err; 1806 1807 free(ssl->internal->alpn_client_proto_list); 1808 ssl->internal->alpn_client_proto_list = NULL; 1809 ssl->internal->alpn_client_proto_list_len = 0; 1810 1811 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1812 == NULL) 1813 goto err; 1814 ssl->internal->alpn_client_proto_list_len = protos_len; 1815 1816 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1817 1818 failed = 0; 1819 1820 err: 1821 /* NOTE: Return values are the reverse of what you expect. */ 1822 return (failed); 1823} 1824 1825/* 1826 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1827 * ClientHello processing in order to select an ALPN protocol from the 1828 * client's list of offered protocols. 1829 */ 1830void 1831SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1832 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1833 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1834{ 1835 ctx->internal->alpn_select_cb = cb; 1836 ctx->internal->alpn_select_cb_arg = arg; 1837} 1838 1839/* 1840 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1841 * it sets data to point to len bytes of protocol name (not including the 1842 * leading length-prefix byte). If the server didn't respond with* a negotiated 1843 * protocol then len will be zero. 1844 */ 1845void 1846SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1847 unsigned int *len) 1848{ 1849 *data = ssl->s3->internal->alpn_selected; 1850 *len = ssl->s3->internal->alpn_selected_len; 1851} 1852 1853void 1854SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1855{ 1856 return; 1857} 1858 1859int 1860SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1861 const char *label, size_t llen, const unsigned char *p, size_t plen, 1862 int use_context) 1863{ 1864 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1865 if (!use_context) { 1866 p = NULL; 1867 plen = 0; 1868 } 1869 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1870 out, olen); 1871 } 1872 1873 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1874 use_context)); 1875} 1876 1877static unsigned long 1878ssl_session_hash(const SSL_SESSION *a) 1879{ 1880 unsigned long l; 1881 1882 l = (unsigned long) 1883 ((unsigned int) a->session_id[0] )| 1884 ((unsigned int) a->session_id[1]<< 8L)| 1885 ((unsigned long)a->session_id[2]<<16L)| 1886 ((unsigned long)a->session_id[3]<<24L); 1887 return (l); 1888} 1889 1890/* 1891 * NB: If this function (or indeed the hash function which uses a sort of 1892 * coarser function than this one) is changed, ensure 1893 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1894 * able to construct an SSL_SESSION that will collide with any existing session 1895 * with a matching session ID. 1896 */ 1897static int 1898ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1899{ 1900 if (a->ssl_version != b->ssl_version) 1901 return (1); 1902 if (a->session_id_length != b->session_id_length) 1903 return (1); 1904 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1905 return (1); 1906 return (0); 1907} 1908 1909/* 1910 * These wrapper functions should remain rather than redeclaring 1911 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1912 * variable. The reason is that the functions aren't static, they're exposed via 1913 * ssl.h. 1914 */ 1915static unsigned long 1916ssl_session_LHASH_HASH(const void *arg) 1917{ 1918 const SSL_SESSION *a = arg; 1919 1920 return ssl_session_hash(a); 1921} 1922 1923static int 1924ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1925{ 1926 const SSL_SESSION *a = arg1; 1927 const SSL_SESSION *b = arg2; 1928 1929 return ssl_session_cmp(a, b); 1930} 1931 1932SSL_CTX * 1933SSL_CTX_new(const SSL_METHOD *meth) 1934{ 1935 SSL_CTX *ret; 1936 1937 if (!OPENSSL_init_ssl(0, NULL)) { 1938 SSLerrorx(SSL_R_LIBRARY_BUG); 1939 return (NULL); 1940 } 1941 1942 if (meth == NULL) { 1943 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1944 return (NULL); 1945 } 1946 1947 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1948 SSLerrorx(ERR_R_MALLOC_FAILURE); 1949 return (NULL); 1950 } 1951 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1952 free(ret); 1953 SSLerrorx(ERR_R_MALLOC_FAILURE); 1954 return (NULL); 1955 } 1956 1957 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1958 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1959 goto err; 1960 } 1961 1962 ret->method = meth; 1963 ret->internal->min_tls_version = meth->min_tls_version; 1964 ret->internal->max_tls_version = meth->max_tls_version; 1965 ret->internal->min_proto_version = 0; 1966 ret->internal->max_proto_version = 0; 1967 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1968 1969 ret->cert_store = NULL; 1970 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1971 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1972 ret->internal->session_cache_head = NULL; 1973 ret->internal->session_cache_tail = NULL; 1974 1975 /* We take the system default */ 1976 ret->session_timeout = ssl_get_default_timeout(); 1977 1978 ret->internal->new_session_cb = 0; 1979 ret->internal->remove_session_cb = 0; 1980 ret->internal->get_session_cb = 0; 1981 ret->internal->generate_session_id = 0; 1982 1983 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1984 1985 ret->references = 1; 1986 ret->internal->quiet_shutdown = 0; 1987 1988 ret->internal->info_callback = NULL; 1989 1990 ret->internal->app_verify_callback = 0; 1991 ret->internal->app_verify_arg = NULL; 1992 1993 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1994 ret->internal->read_ahead = 0; 1995 ret->internal->msg_callback = 0; 1996 ret->internal->msg_callback_arg = NULL; 1997 ret->verify_mode = SSL_VERIFY_NONE; 1998 ret->sid_ctx_length = 0; 1999 ret->internal->default_verify_callback = NULL; 2000 2001 if ((ret->internal->cert = ssl_cert_new()) == NULL) 2002 goto err; 2003 2004 ret->default_passwd_callback = 0; 2005 ret->default_passwd_callback_userdata = NULL; 2006 ret->internal->client_cert_cb = 0; 2007 ret->internal->app_gen_cookie_cb = 0; 2008 ret->internal->app_verify_cookie_cb = 0; 2009 2010 ret->internal->sessions = lh_SSL_SESSION_new(); 2011 if (ret->internal->sessions == NULL) 2012 goto err; 2013 ret->cert_store = X509_STORE_new(); 2014 if (ret->cert_store == NULL) 2015 goto err; 2016 2017 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2018 NULL, SSL_DEFAULT_CIPHER_LIST); 2019 if (ret->cipher_list == NULL || 2020 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2021 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2022 goto err2; 2023 } 2024 2025 ret->param = X509_VERIFY_PARAM_new(); 2026 if (!ret->param) 2027 goto err; 2028 2029 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2030 goto err; 2031 2032 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2033 2034 ret->extra_certs = NULL; 2035 2036 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2037 2038 ret->internal->tlsext_servername_callback = 0; 2039 ret->internal->tlsext_servername_arg = NULL; 2040 2041 /* Setup RFC4507 ticket keys */ 2042 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2043 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2044 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2045 2046 ret->internal->tlsext_status_cb = 0; 2047 ret->internal->tlsext_status_arg = NULL; 2048 2049#ifndef OPENSSL_NO_ENGINE 2050 ret->internal->client_cert_engine = NULL; 2051#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2052#define eng_strx(x) #x 2053#define eng_str(x) eng_strx(x) 2054 /* Use specific client engine automatically... ignore errors */ 2055 { 2056 ENGINE *eng; 2057 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2058 if (!eng) { 2059 ERR_clear_error(); 2060 ENGINE_load_builtin_engines(); 2061 eng = ENGINE_by_id(eng_str( 2062 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2063 } 2064 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2065 ERR_clear_error(); 2066 } 2067#endif 2068#endif 2069 /* 2070 * Default is to connect to non-RI servers. When RI is more widely 2071 * deployed might change this. 2072 */ 2073 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2074 2075 return (ret); 2076 err: 2077 SSLerrorx(ERR_R_MALLOC_FAILURE); 2078 err2: 2079 SSL_CTX_free(ret); 2080 return (NULL); 2081} 2082 2083void 2084SSL_CTX_free(SSL_CTX *ctx) 2085{ 2086 int i; 2087 2088 if (ctx == NULL) 2089 return; 2090 2091 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2092 if (i > 0) 2093 return; 2094 2095 X509_VERIFY_PARAM_free(ctx->param); 2096 2097 /* 2098 * Free internal session cache. However: the remove_cb() may reference 2099 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2100 * after the sessions were flushed. 2101 * As the ex_data handling routines might also touch the session cache, 2102 * the most secure solution seems to be: empty (flush) the cache, then 2103 * free ex_data, then finally free the cache. 2104 * (See ticket [openssl.org #212].) 2105 */ 2106 if (ctx->internal->sessions != NULL) 2107 SSL_CTX_flush_sessions(ctx, 0); 2108 2109 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2110 2111 lh_SSL_SESSION_free(ctx->internal->sessions); 2112 2113 X509_STORE_free(ctx->cert_store); 2114 sk_SSL_CIPHER_free(ctx->cipher_list); 2115 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2116 ssl_cert_free(ctx->internal->cert); 2117 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2118 sk_X509_pop_free(ctx->extra_certs, X509_free); 2119 2120#ifndef OPENSSL_NO_SRTP 2121 if (ctx->internal->srtp_profiles) 2122 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2123#endif 2124 2125#ifndef OPENSSL_NO_ENGINE 2126 ENGINE_finish(ctx->internal->client_cert_engine); 2127#endif 2128 2129 free(ctx->internal->tlsext_ecpointformatlist); 2130 free(ctx->internal->tlsext_supportedgroups); 2131 2132 free(ctx->internal->alpn_client_proto_list); 2133 2134 free(ctx->internal); 2135 free(ctx); 2136} 2137 2138int 2139SSL_CTX_up_ref(SSL_CTX *ctx) 2140{ 2141 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2142 return ((refs > 1) ? 1 : 0); 2143} 2144 2145pem_password_cb * 2146SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2147{ 2148 return (ctx->default_passwd_callback); 2149} 2150 2151void 2152SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2153{ 2154 ctx->default_passwd_callback = cb; 2155} 2156 2157void * 2158SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2159{ 2160 return ctx->default_passwd_callback_userdata; 2161} 2162 2163void 2164SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2165{ 2166 ctx->default_passwd_callback_userdata = u; 2167} 2168 2169void 2170SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2171 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2172{ 2173 ctx->internal->app_verify_callback = cb; 2174 ctx->internal->app_verify_arg = arg; 2175} 2176 2177void 2178SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2179{ 2180 ctx->verify_mode = mode; 2181 ctx->internal->default_verify_callback = cb; 2182} 2183 2184void 2185SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2186{ 2187 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2188} 2189 2190void 2191ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2192{ 2193 unsigned long mask_a, mask_k; 2194 CERT_PKEY *cpk; 2195 2196 if (c == NULL) 2197 return; 2198 2199 mask_a = SSL_aNULL | SSL_aTLS1_3; 2200 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2201 2202 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2203 mask_k |= SSL_kDHE; 2204 2205 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2206 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2207 /* Key usage, if present, must allow signing. */ 2208 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2209 mask_a |= SSL_aECDSA; 2210 } 2211 2212 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2213 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2214 mask_k |= SSL_kGOST; 2215 mask_a |= SSL_aGOST01; 2216 } 2217 2218 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2219 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2220 mask_a |= SSL_aRSA; 2221 mask_k |= SSL_kRSA; 2222 } 2223 2224 c->mask_k = mask_k; 2225 c->mask_a = mask_a; 2226 c->valid = 1; 2227} 2228 2229/* See if this handshake is using an ECC cipher suite. */ 2230int 2231ssl_using_ecc_cipher(SSL *s) 2232{ 2233 unsigned long alg_a, alg_k; 2234 2235 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2236 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2237 2238 return s->session->tlsext_ecpointformatlist != NULL && 2239 s->session->tlsext_ecpointformatlist_length > 0 && 2240 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2241} 2242 2243int 2244ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2245{ 2246 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2247 unsigned long alg_a; 2248 2249 alg_a = cs->algorithm_auth; 2250 2251 if (alg_a & SSL_aECDSA) { 2252 /* Key usage, if present, must allow signing. */ 2253 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2254 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2255 return (0); 2256 } 2257 } 2258 2259 return (1); 2260} 2261 2262CERT_PKEY * 2263ssl_get_server_send_pkey(const SSL *s) 2264{ 2265 unsigned long alg_a; 2266 CERT *c; 2267 int i; 2268 2269 c = s->cert; 2270 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2271 2272 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2273 2274 if (alg_a & SSL_aECDSA) { 2275 i = SSL_PKEY_ECC; 2276 } else if (alg_a & SSL_aRSA) { 2277 i = SSL_PKEY_RSA; 2278 } else if (alg_a & SSL_aGOST01) { 2279 i = SSL_PKEY_GOST01; 2280 } else { /* if (alg_a & SSL_aNULL) */ 2281 SSLerror(s, ERR_R_INTERNAL_ERROR); 2282 return (NULL); 2283 } 2284 2285 return (c->pkeys + i); 2286} 2287 2288EVP_PKEY * 2289ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2290 const struct ssl_sigalg **sap) 2291{ 2292 const struct ssl_sigalg *sigalg = NULL; 2293 EVP_PKEY *pkey = NULL; 2294 unsigned long alg_a; 2295 CERT *c; 2296 int idx = -1; 2297 2298 alg_a = cipher->algorithm_auth; 2299 c = s->cert; 2300 2301 if (alg_a & SSL_aRSA) { 2302 idx = SSL_PKEY_RSA; 2303 } else if ((alg_a & SSL_aECDSA) && 2304 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2305 idx = SSL_PKEY_ECC; 2306 if (idx == -1) { 2307 SSLerror(s, ERR_R_INTERNAL_ERROR); 2308 return (NULL); 2309 } 2310 2311 pkey = c->pkeys[idx].privatekey; 2312 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2313 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2314 return (NULL); 2315 } 2316 *pmd = sigalg->md(); 2317 *sap = sigalg; 2318 2319 return (pkey); 2320} 2321 2322DH * 2323ssl_get_auto_dh(SSL *s) 2324{ 2325 CERT_PKEY *cpk; 2326 int keylen; 2327 DH *dhp; 2328 2329 if (s->cert->dh_tmp_auto == 2) { 2330 keylen = 1024; 2331 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2332 keylen = 1024; 2333 if (S3I(s)->hs.cipher->strength_bits == 256) 2334 keylen = 3072; 2335 } else { 2336 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2337 return (NULL); 2338 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2339 return (NULL); 2340 keylen = EVP_PKEY_bits(cpk->privatekey); 2341 } 2342 2343 if ((dhp = DH_new()) == NULL) 2344 return (NULL); 2345 2346 dhp->g = BN_new(); 2347 if (dhp->g != NULL) 2348 BN_set_word(dhp->g, 2); 2349 2350 if (keylen >= 8192) 2351 dhp->p = get_rfc3526_prime_8192(NULL); 2352 else if (keylen >= 4096) 2353 dhp->p = get_rfc3526_prime_4096(NULL); 2354 else if (keylen >= 3072) 2355 dhp->p = get_rfc3526_prime_3072(NULL); 2356 else if (keylen >= 2048) 2357 dhp->p = get_rfc3526_prime_2048(NULL); 2358 else if (keylen >= 1536) 2359 dhp->p = get_rfc3526_prime_1536(NULL); 2360 else 2361 dhp->p = get_rfc2409_prime_1024(NULL); 2362 2363 if (dhp->p == NULL || dhp->g == NULL) { 2364 DH_free(dhp); 2365 return (NULL); 2366 } 2367 return (dhp); 2368} 2369 2370static int 2371ssl_should_update_external_cache(SSL *s, int mode) 2372{ 2373 int cache_mode; 2374 2375 cache_mode = s->session_ctx->internal->session_cache_mode; 2376 2377 /* Don't cache if mode says not to */ 2378 if ((cache_mode & mode) == 0) 2379 return 0; 2380 2381 /* if it is not already cached, cache it */ 2382 if (!s->internal->hit) 2383 return 1; 2384 2385 /* If it's TLS 1.3, do it to match OpenSSL */ 2386 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2387 return 1; 2388 2389 return 0; 2390} 2391 2392static int 2393ssl_should_update_internal_cache(SSL *s, int mode) 2394{ 2395 int cache_mode; 2396 2397 cache_mode = s->session_ctx->internal->session_cache_mode; 2398 2399 /* Don't cache if mode says not to */ 2400 if ((cache_mode & mode) == 0) 2401 return 0; 2402 2403 /* If it is already cached, don't cache it again */ 2404 if (s->internal->hit) 2405 return 0; 2406 2407 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2408 return 0; 2409 2410 /* If we are lesser than TLS 1.3, Cache it. */ 2411 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2412 return 1; 2413 2414 /* Below this we consider TLS 1.3 or later */ 2415 2416 /* If it's not a server, add it? OpenSSL does this. */ 2417 if (!s->server) 2418 return 1; 2419 2420 /* XXX if we support early data / PSK need to add */ 2421 2422 /* 2423 * If we have the remove session callback, we will want 2424 * to know about this even if it's a stateless ticket 2425 * from 1.3 so we can know when it is removed. 2426 */ 2427 if (s->session_ctx->internal->remove_session_cb != NULL) 2428 return 1; 2429 2430 /* If we have set OP_NO_TICKET, cache it. */ 2431 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2432 return 1; 2433 2434 /* Otherwise do not cache */ 2435 return 0; 2436} 2437 2438void 2439ssl_update_cache(SSL *s, int mode) 2440{ 2441 int cache_mode, do_callback; 2442 2443 if (s->session->session_id_length == 0) 2444 return; 2445 2446 cache_mode = s->session_ctx->internal->session_cache_mode; 2447 do_callback = ssl_should_update_external_cache(s, mode); 2448 2449 if (ssl_should_update_internal_cache(s, mode)) { 2450 /* 2451 * XXX should we fail if the add to the internal cache 2452 * fails? OpenSSL doesn't care.. 2453 */ 2454 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2455 } 2456 2457 /* 2458 * Update the "external cache" by calling the new session 2459 * callback if present, even with TLS 1.3 without early data 2460 * "because some application just want to know about the 2461 * creation of a session and aren't doing a full cache". 2462 * Apparently, if they are doing a full cache, they'll have 2463 * some fun, but we endeavour to give application writers the 2464 * same glorious experience they expect from OpenSSL which 2465 * does it this way. 2466 */ 2467 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2468 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2469 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2470 SSL_SESSION_free(s->session); 2471 } 2472 2473 /* Auto flush every 255 connections. */ 2474 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2475 (cache_mode & mode) != 0) { 2476 int connections; 2477 if (mode & SSL_SESS_CACHE_CLIENT) 2478 connections = s->session_ctx->internal->stats.sess_connect_good; 2479 else 2480 connections = s->session_ctx->internal->stats.sess_accept_good; 2481 if ((connections & 0xff) == 0xff) 2482 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2483 } 2484} 2485 2486const SSL_METHOD * 2487SSL_get_ssl_method(SSL *s) 2488{ 2489 return (s->method); 2490} 2491 2492int 2493SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2494{ 2495 int (*handshake_func)(SSL *) = NULL; 2496 int ret = 1; 2497 2498 if (s->method == method) 2499 return (ret); 2500 2501 if (s->internal->handshake_func == s->method->ssl_connect) 2502 handshake_func = method->ssl_connect; 2503 else if (s->internal->handshake_func == s->method->ssl_accept) 2504 handshake_func = method->ssl_accept; 2505 2506 if (s->method->version == method->version) { 2507 s->method = method; 2508 } else { 2509 s->method->ssl_free(s); 2510 s->method = method; 2511 ret = s->method->ssl_new(s); 2512 } 2513 s->internal->handshake_func = handshake_func; 2514 2515 return (ret); 2516} 2517 2518int 2519SSL_get_error(const SSL *s, int i) 2520{ 2521 int reason; 2522 unsigned long l; 2523 BIO *bio; 2524 2525 if (i > 0) 2526 return (SSL_ERROR_NONE); 2527 2528 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2529 * etc, where we do encode the error */ 2530 if ((l = ERR_peek_error()) != 0) { 2531 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2532 return (SSL_ERROR_SYSCALL); 2533 else 2534 return (SSL_ERROR_SSL); 2535 } 2536 2537 if ((i < 0) && SSL_want_read(s)) { 2538 bio = SSL_get_rbio(s); 2539 if (BIO_should_read(bio)) { 2540 return (SSL_ERROR_WANT_READ); 2541 } else if (BIO_should_write(bio)) { 2542 /* 2543 * This one doesn't make too much sense... We never 2544 * try to write to the rbio, and an application 2545 * program where rbio and wbio are separate couldn't 2546 * even know what it should wait for. However if we 2547 * ever set s->internal->rwstate incorrectly (so that we have 2548 * SSL_want_read(s) instead of SSL_want_write(s)) 2549 * and rbio and wbio *are* the same, this test works 2550 * around that bug; so it might be safer to keep it. 2551 */ 2552 return (SSL_ERROR_WANT_WRITE); 2553 } else if (BIO_should_io_special(bio)) { 2554 reason = BIO_get_retry_reason(bio); 2555 if (reason == BIO_RR_CONNECT) 2556 return (SSL_ERROR_WANT_CONNECT); 2557 else if (reason == BIO_RR_ACCEPT) 2558 return (SSL_ERROR_WANT_ACCEPT); 2559 else 2560 return (SSL_ERROR_SYSCALL); /* unknown */ 2561 } 2562 } 2563 2564 if ((i < 0) && SSL_want_write(s)) { 2565 bio = SSL_get_wbio(s); 2566 if (BIO_should_write(bio)) { 2567 return (SSL_ERROR_WANT_WRITE); 2568 } else if (BIO_should_read(bio)) { 2569 /* 2570 * See above (SSL_want_read(s) with 2571 * BIO_should_write(bio)) 2572 */ 2573 return (SSL_ERROR_WANT_READ); 2574 } else if (BIO_should_io_special(bio)) { 2575 reason = BIO_get_retry_reason(bio); 2576 if (reason == BIO_RR_CONNECT) 2577 return (SSL_ERROR_WANT_CONNECT); 2578 else if (reason == BIO_RR_ACCEPT) 2579 return (SSL_ERROR_WANT_ACCEPT); 2580 else 2581 return (SSL_ERROR_SYSCALL); 2582 } 2583 } 2584 if ((i < 0) && SSL_want_x509_lookup(s)) { 2585 return (SSL_ERROR_WANT_X509_LOOKUP); 2586 } 2587 2588 if (i == 0) { 2589 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2590 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2591 return (SSL_ERROR_ZERO_RETURN); 2592 } 2593 return (SSL_ERROR_SYSCALL); 2594} 2595 2596int 2597SSL_do_handshake(SSL *s) 2598{ 2599 int ret = 1; 2600 2601 if (s->internal->handshake_func == NULL) { 2602 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2603 return (-1); 2604 } 2605 2606 s->method->ssl_renegotiate_check(s); 2607 2608 if (SSL_in_init(s) || SSL_in_before(s)) { 2609 ret = s->internal->handshake_func(s); 2610 } 2611 return (ret); 2612} 2613 2614/* 2615 * For the next 2 functions, SSL_clear() sets shutdown and so 2616 * one of these calls will reset it 2617 */ 2618void 2619SSL_set_accept_state(SSL *s) 2620{ 2621 s->server = 1; 2622 s->internal->shutdown = 0; 2623 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2624 s->internal->handshake_func = s->method->ssl_accept; 2625 ssl_clear_cipher_state(s); 2626} 2627 2628void 2629SSL_set_connect_state(SSL *s) 2630{ 2631 s->server = 0; 2632 s->internal->shutdown = 0; 2633 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2634 s->internal->handshake_func = s->method->ssl_connect; 2635 ssl_clear_cipher_state(s); 2636} 2637 2638int 2639ssl_undefined_function(SSL *s) 2640{ 2641 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2642 return (0); 2643} 2644 2645int 2646ssl_undefined_void_function(void) 2647{ 2648 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2649 return (0); 2650} 2651 2652int 2653ssl_undefined_const_function(const SSL *s) 2654{ 2655 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2656 return (0); 2657} 2658 2659const char * 2660ssl_version_string(int ver) 2661{ 2662 switch (ver) { 2663 case TLS1_VERSION: 2664 return (SSL_TXT_TLSV1); 2665 case TLS1_1_VERSION: 2666 return (SSL_TXT_TLSV1_1); 2667 case TLS1_2_VERSION: 2668 return (SSL_TXT_TLSV1_2); 2669 case TLS1_3_VERSION: 2670 return (SSL_TXT_TLSV1_3); 2671 case DTLS1_VERSION: 2672 return (SSL_TXT_DTLS1); 2673 case DTLS1_2_VERSION: 2674 return (SSL_TXT_DTLS1_2); 2675 default: 2676 return ("unknown"); 2677 } 2678} 2679 2680const char * 2681SSL_get_version(const SSL *s) 2682{ 2683 return ssl_version_string(s->version); 2684} 2685 2686SSL * 2687SSL_dup(SSL *s) 2688{ 2689 STACK_OF(X509_NAME) *sk; 2690 X509_NAME *xn; 2691 SSL *ret; 2692 int i; 2693 2694 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2695 goto err; 2696 2697 ret->version = s->version; 2698 ret->method = s->method; 2699 2700 if (s->session != NULL) { 2701 if (!SSL_copy_session_id(ret, s)) 2702 goto err; 2703 } else { 2704 /* 2705 * No session has been established yet, so we have to expect 2706 * that s->cert or ret->cert will be changed later -- 2707 * they should not both point to the same object, 2708 * and thus we can't use SSL_copy_session_id. 2709 */ 2710 2711 ret->method->ssl_free(ret); 2712 ret->method = s->method; 2713 ret->method->ssl_new(ret); 2714 2715 ssl_cert_free(ret->cert); 2716 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2717 goto err; 2718 2719 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2720 s->sid_ctx_length)) 2721 goto err; 2722 } 2723 2724 ret->internal->options = s->internal->options; 2725 ret->internal->mode = s->internal->mode; 2726 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2727 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2728 ret->internal->msg_callback = s->internal->msg_callback; 2729 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2730 SSL_set_verify(ret, SSL_get_verify_mode(s), 2731 SSL_get_verify_callback(s)); 2732 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2733 ret->internal->generate_session_id = s->internal->generate_session_id; 2734 2735 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2736 2737 ret->internal->debug = s->internal->debug; 2738 2739 /* copy app data, a little dangerous perhaps */ 2740 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2741 &ret->internal->ex_data, &s->internal->ex_data)) 2742 goto err; 2743 2744 /* setup rbio, and wbio */ 2745 if (s->rbio != NULL) { 2746 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2747 goto err; 2748 } 2749 if (s->wbio != NULL) { 2750 if (s->wbio != s->rbio) { 2751 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2752 goto err; 2753 } else 2754 ret->wbio = ret->rbio; 2755 } 2756 ret->internal->rwstate = s->internal->rwstate; 2757 ret->internal->in_handshake = s->internal->in_handshake; 2758 ret->internal->handshake_func = s->internal->handshake_func; 2759 ret->server = s->server; 2760 ret->internal->renegotiate = s->internal->renegotiate; 2761 ret->internal->new_session = s->internal->new_session; 2762 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2763 ret->internal->shutdown = s->internal->shutdown; 2764 /* SSL_dup does not really work at any state, though */ 2765 S3I(ret)->hs.state = S3I(s)->hs.state; 2766 ret->internal->rstate = s->internal->rstate; 2767 2768 /* 2769 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2770 * ret->init_off 2771 */ 2772 ret->internal->init_num = 0; 2773 2774 ret->internal->hit = s->internal->hit; 2775 2776 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2777 2778 if (s->cipher_list != NULL) { 2779 if ((ret->cipher_list = 2780 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2781 goto err; 2782 } 2783 if (s->internal->cipher_list_tls13 != NULL) { 2784 if ((ret->internal->cipher_list_tls13 = 2785 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2786 goto err; 2787 } 2788 2789 /* Dup the client_CA list */ 2790 if (s->internal->client_CA != NULL) { 2791 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2792 ret->internal->client_CA = sk; 2793 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2794 xn = sk_X509_NAME_value(sk, i); 2795 if (sk_X509_NAME_set(sk, i, 2796 X509_NAME_dup(xn)) == NULL) { 2797 X509_NAME_free(xn); 2798 goto err; 2799 } 2800 } 2801 } 2802 2803 return ret; 2804 err: 2805 SSL_free(ret); 2806 return NULL; 2807} 2808 2809void 2810ssl_clear_cipher_state(SSL *s) 2811{ 2812 tls12_record_layer_clear_read_state(s->internal->rl); 2813 tls12_record_layer_clear_write_state(s->internal->rl); 2814} 2815 2816void 2817ssl_info_callback(const SSL *s, int type, int value) 2818{ 2819 ssl_info_callback_fn *cb; 2820 2821 if ((cb = s->internal->info_callback) == NULL) 2822 cb = s->ctx->internal->info_callback; 2823 if (cb != NULL) 2824 cb(s, type, value); 2825} 2826 2827void 2828ssl_msg_callback(SSL *s, int is_write, int content_type, 2829 const void *msg_buf, size_t msg_len) 2830{ 2831 if (s->internal->msg_callback != NULL) 2832 s->internal->msg_callback(is_write, s->version, content_type, 2833 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2834} 2835 2836/* Fix this function so that it takes an optional type parameter */ 2837X509 * 2838SSL_get_certificate(const SSL *s) 2839{ 2840 return (s->cert->key->x509); 2841} 2842 2843/* Fix this function so that it takes an optional type parameter */ 2844EVP_PKEY * 2845SSL_get_privatekey(const SSL *s) 2846{ 2847 return (s->cert->key->privatekey); 2848} 2849 2850const SSL_CIPHER * 2851SSL_get_current_cipher(const SSL *s) 2852{ 2853 if ((s->session != NULL) && (s->session->cipher != NULL)) 2854 return (s->session->cipher); 2855 return (NULL); 2856} 2857const void * 2858SSL_get_current_compression(SSL *s) 2859{ 2860 return (NULL); 2861} 2862 2863const void * 2864SSL_get_current_expansion(SSL *s) 2865{ 2866 return (NULL); 2867} 2868 2869size_t 2870SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2871{ 2872 size_t len = sizeof(s->s3->client_random); 2873 2874 if (out == NULL) 2875 return len; 2876 2877 if (len > max_out) 2878 len = max_out; 2879 2880 memcpy(out, s->s3->client_random, len); 2881 2882 return len; 2883} 2884 2885size_t 2886SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2887{ 2888 size_t len = sizeof(s->s3->server_random); 2889 2890 if (out == NULL) 2891 return len; 2892 2893 if (len > max_out) 2894 len = max_out; 2895 2896 memcpy(out, s->s3->server_random, len); 2897 2898 return len; 2899} 2900 2901int 2902ssl_init_wbio_buffer(SSL *s, int push) 2903{ 2904 BIO *bbio; 2905 2906 if (s->bbio == NULL) { 2907 bbio = BIO_new(BIO_f_buffer()); 2908 if (bbio == NULL) 2909 return (0); 2910 s->bbio = bbio; 2911 } else { 2912 bbio = s->bbio; 2913 if (s->bbio == s->wbio) 2914 s->wbio = BIO_pop(s->wbio); 2915 } 2916 (void)BIO_reset(bbio); 2917/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2918 if (!BIO_set_read_buffer_size(bbio, 1)) { 2919 SSLerror(s, ERR_R_BUF_LIB); 2920 return (0); 2921 } 2922 if (push) { 2923 if (s->wbio != bbio) 2924 s->wbio = BIO_push(bbio, s->wbio); 2925 } else { 2926 if (s->wbio == bbio) 2927 s->wbio = BIO_pop(bbio); 2928 } 2929 return (1); 2930} 2931 2932void 2933ssl_free_wbio_buffer(SSL *s) 2934{ 2935 if (s == NULL) 2936 return; 2937 2938 if (s->bbio == NULL) 2939 return; 2940 2941 if (s->bbio == s->wbio) { 2942 /* remove buffering */ 2943 s->wbio = BIO_pop(s->wbio); 2944 } 2945 BIO_free(s->bbio); 2946 s->bbio = NULL; 2947} 2948 2949void 2950SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2951{ 2952 ctx->internal->quiet_shutdown = mode; 2953} 2954 2955int 2956SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2957{ 2958 return (ctx->internal->quiet_shutdown); 2959} 2960 2961void 2962SSL_set_quiet_shutdown(SSL *s, int mode) 2963{ 2964 s->internal->quiet_shutdown = mode; 2965} 2966 2967int 2968SSL_get_quiet_shutdown(const SSL *s) 2969{ 2970 return (s->internal->quiet_shutdown); 2971} 2972 2973void 2974SSL_set_shutdown(SSL *s, int mode) 2975{ 2976 s->internal->shutdown = mode; 2977} 2978 2979int 2980SSL_get_shutdown(const SSL *s) 2981{ 2982 return (s->internal->shutdown); 2983} 2984 2985int 2986SSL_version(const SSL *s) 2987{ 2988 return (s->version); 2989} 2990 2991SSL_CTX * 2992SSL_get_SSL_CTX(const SSL *ssl) 2993{ 2994 return (ssl->ctx); 2995} 2996 2997SSL_CTX * 2998SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2999{ 3000 CERT *new_cert; 3001 3002 if (ctx == NULL) 3003 ctx = ssl->initial_ctx; 3004 if (ssl->ctx == ctx) 3005 return (ssl->ctx); 3006 3007 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 3008 return NULL; 3009 ssl_cert_free(ssl->cert); 3010 ssl->cert = new_cert; 3011 3012 SSL_CTX_up_ref(ctx); 3013 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3014 ssl->ctx = ctx; 3015 3016 return (ssl->ctx); 3017} 3018 3019int 3020SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3021{ 3022 return (X509_STORE_set_default_paths(ctx->cert_store)); 3023} 3024 3025int 3026SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3027 const char *CApath) 3028{ 3029 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3030} 3031 3032int 3033SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3034{ 3035 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3036} 3037 3038void 3039SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3040{ 3041 ssl->internal->info_callback = cb; 3042} 3043 3044void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3045{ 3046 return (ssl->internal->info_callback); 3047} 3048 3049int 3050SSL_state(const SSL *ssl) 3051{ 3052 return (S3I(ssl)->hs.state); 3053} 3054 3055void 3056SSL_set_state(SSL *ssl, int state) 3057{ 3058 S3I(ssl)->hs.state = state; 3059} 3060 3061void 3062SSL_set_verify_result(SSL *ssl, long arg) 3063{ 3064 ssl->verify_result = arg; 3065} 3066 3067long 3068SSL_get_verify_result(const SSL *ssl) 3069{ 3070 return (ssl->verify_result); 3071} 3072 3073int 3074SSL_verify_client_post_handshake(SSL *ssl) 3075{ 3076 return 0; 3077} 3078 3079void 3080SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3081{ 3082 return; 3083} 3084 3085void 3086SSL_set_post_handshake_auth(SSL *ssl, int val) 3087{ 3088 return; 3089} 3090 3091int 3092SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3093 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3094{ 3095 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3096 new_func, dup_func, free_func)); 3097} 3098 3099int 3100SSL_set_ex_data(SSL *s, int idx, void *arg) 3101{ 3102 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3103} 3104 3105void * 3106SSL_get_ex_data(const SSL *s, int idx) 3107{ 3108 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3109} 3110 3111int 3112SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3113 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3114{ 3115 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3116 new_func, dup_func, free_func)); 3117} 3118 3119int 3120SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3121{ 3122 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3123} 3124 3125void * 3126SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3127{ 3128 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3129} 3130 3131int 3132ssl_ok(SSL *s) 3133{ 3134 return (1); 3135} 3136 3137X509_STORE * 3138SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3139{ 3140 return (ctx->cert_store); 3141} 3142 3143void 3144SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3145{ 3146 X509_STORE_free(ctx->cert_store); 3147 ctx->cert_store = store; 3148} 3149 3150X509 * 3151SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3152{ 3153 if (ctx->internal->cert == NULL) 3154 return NULL; 3155 3156 return ctx->internal->cert->key->x509; 3157} 3158 3159EVP_PKEY * 3160SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3161{ 3162 if (ctx->internal->cert == NULL) 3163 return NULL; 3164 3165 return ctx->internal->cert->key->privatekey; 3166} 3167 3168int 3169SSL_want(const SSL *s) 3170{ 3171 return (s->internal->rwstate); 3172} 3173 3174void 3175SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3176 int keylength)) 3177{ 3178 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3179} 3180 3181void 3182SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3183 int keylength)) 3184{ 3185 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3186} 3187 3188void 3189SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3190 int keylength)) 3191{ 3192 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3193} 3194 3195void 3196SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3197 int keylength)) 3198{ 3199 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3200} 3201 3202void 3203SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3204 int is_export, int keylength)) 3205{ 3206 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3207 (void (*)(void))ecdh); 3208} 3209 3210void 3211SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3212 int keylength)) 3213{ 3214 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3215} 3216 3217 3218void 3219SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3220 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3221{ 3222 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3223 (void (*)(void))cb); 3224} 3225 3226void 3227SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3228 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3229{ 3230 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3231} 3232 3233void 3234SSL_set_debug(SSL *s, int debug) 3235{ 3236 s->internal->debug = debug; 3237} 3238 3239int 3240SSL_cache_hit(SSL *s) 3241{ 3242 return (s->internal->hit); 3243} 3244 3245int 3246SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3247{ 3248 return ctx->internal->min_proto_version; 3249} 3250 3251int 3252SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3253{ 3254 return ssl_version_set_min(ctx->method, version, 3255 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3256 &ctx->internal->min_proto_version); 3257} 3258 3259int 3260SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3261{ 3262 return ctx->internal->max_proto_version; 3263} 3264 3265int 3266SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3267{ 3268 return ssl_version_set_max(ctx->method, version, 3269 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3270 &ctx->internal->max_proto_version); 3271} 3272 3273int 3274SSL_get_min_proto_version(SSL *ssl) 3275{ 3276 return ssl->internal->min_proto_version; 3277} 3278 3279int 3280SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3281{ 3282 return ssl_version_set_min(ssl->method, version, 3283 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3284 &ssl->internal->min_proto_version); 3285} 3286int 3287SSL_get_max_proto_version(SSL *ssl) 3288{ 3289 return ssl->internal->max_proto_version; 3290} 3291 3292int 3293SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3294{ 3295 return ssl_version_set_max(ssl->method, version, 3296 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3297 &ssl->internal->max_proto_version); 3298} 3299 3300const SSL_METHOD * 3301SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3302{ 3303 return ctx->method; 3304} 3305 3306static int 3307ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3308{ 3309 SSL_CIPHER const *a = a_; 3310 SSL_CIPHER const *b = b_; 3311 return ssl_cipher_id_cmp(a, b); 3312} 3313 3314SSL_CIPHER * 3315OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3316{ 3317 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3318 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3319} 3320