ssl_lib.c revision 1.274
1/* $OpenBSD: ssl_lib.c,v 1.274 2021/10/23 16:29:15 beck 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 (SSI(s)->sess_cert == NULL)) 891 r = NULL; 892 else 893 r = SSI(s)->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} 902 903/* 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 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 (S3I(s)->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 const 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 (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1475 goto err; 1476 } 1477 1478 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1479 return supported_ciphers; 1480 1481 err: 1482 sk_SSL_CIPHER_free(supported_ciphers); 1483 return NULL; 1484} 1485 1486/* See if we have any ECC cipher suites. */ 1487int 1488ssl_has_ecc_ciphers(SSL *s) 1489{ 1490 STACK_OF(SSL_CIPHER) *ciphers; 1491 unsigned long alg_k, alg_a; 1492 SSL_CIPHER *cipher; 1493 int i; 1494 1495 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1496 return 0; 1497 1498 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1499 cipher = sk_SSL_CIPHER_value(ciphers, i); 1500 1501 alg_k = cipher->algorithm_mkey; 1502 alg_a = cipher->algorithm_auth; 1503 1504 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1505 return 1; 1506 } 1507 1508 return 0; 1509} 1510 1511/* The old interface to get the same thing as SSL_get_ciphers(). */ 1512const char * 1513SSL_get_cipher_list(const SSL *s, int n) 1514{ 1515 STACK_OF(SSL_CIPHER) *ciphers; 1516 const SSL_CIPHER *cipher; 1517 1518 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1519 return (NULL); 1520 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1521 return (NULL); 1522 1523 return (cipher->name); 1524} 1525 1526STACK_OF(SSL_CIPHER) * 1527SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1528{ 1529 if (ctx == NULL) 1530 return NULL; 1531 return ctx->cipher_list; 1532} 1533 1534/* Specify the ciphers to be used by default by the SSL_CTX. */ 1535int 1536SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1537{ 1538 STACK_OF(SSL_CIPHER) *ciphers; 1539 1540 /* 1541 * ssl_create_cipher_list may return an empty stack if it was unable to 1542 * find a cipher matching the given rule string (for example if the 1543 * rule string specifies a cipher which has been disabled). This is not 1544 * an error as far as ssl_create_cipher_list is concerned, and hence 1545 * ctx->cipher_list has been updated. 1546 */ 1547 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1548 ctx->internal->cipher_list_tls13, str); 1549 if (ciphers == NULL) { 1550 return (0); 1551 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1552 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1553 return (0); 1554 } 1555 return (1); 1556} 1557 1558int 1559SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1560{ 1561 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1562 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1563 return 0; 1564 } 1565 if (!ssl_merge_cipherlists(ctx->cipher_list, 1566 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1567 return 0; 1568 1569 return 1; 1570} 1571 1572/* Specify the ciphers to be used by the SSL. */ 1573int 1574SSL_set_cipher_list(SSL *s, const char *str) 1575{ 1576 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1577 1578 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1579 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1580 1581 /* See comment in SSL_CTX_set_cipher_list. */ 1582 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1583 ciphers_tls13, str); 1584 if (ciphers == NULL) { 1585 return (0); 1586 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1587 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1588 return (0); 1589 } 1590 return (1); 1591} 1592 1593int 1594SSL_set_ciphersuites(SSL *s, const char *str) 1595{ 1596 STACK_OF(SSL_CIPHER) *ciphers; 1597 1598 if ((ciphers = s->cipher_list) == NULL) 1599 ciphers = s->ctx->cipher_list; 1600 1601 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1602 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1603 return (0); 1604 } 1605 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1606 &s->cipher_list)) 1607 return 0; 1608 1609 return 1; 1610} 1611 1612char * 1613SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1614{ 1615 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1616 const SSL_CIPHER *cipher; 1617 size_t curlen = 0; 1618 char *end; 1619 int i; 1620 1621 if (!s->server || s->session == NULL || len < 2) 1622 return NULL; 1623 1624 if ((client_ciphers = s->session->ciphers) == NULL) 1625 return NULL; 1626 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1627 return NULL; 1628 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1629 sk_SSL_CIPHER_num(server_ciphers) == 0) 1630 return NULL; 1631 1632 buf[0] = '\0'; 1633 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1634 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1635 1636 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1637 continue; 1638 1639 end = buf + curlen; 1640 if (strlcat(buf, cipher->name, len) >= len || 1641 (curlen = strlcat(buf, ":", len)) >= len) { 1642 /* remove truncated cipher from list */ 1643 *end = '\0'; 1644 break; 1645 } 1646 } 1647 /* remove trailing colon */ 1648 if ((end = strrchr(buf, ':')) != NULL) 1649 *end = '\0'; 1650 return buf; 1651} 1652 1653/* 1654 * Return a servername extension value if provided in Client Hello, or NULL. 1655 * So far, only host_name types are defined (RFC 3546). 1656 */ 1657const char * 1658SSL_get_servername(const SSL *s, const int type) 1659{ 1660 if (type != TLSEXT_NAMETYPE_host_name) 1661 return (NULL); 1662 1663 return (s->session && !s->tlsext_hostname ? 1664 s->session->tlsext_hostname : 1665 s->tlsext_hostname); 1666} 1667 1668int 1669SSL_get_servername_type(const SSL *s) 1670{ 1671 if (s->session && 1672 (!s->tlsext_hostname ? 1673 s->session->tlsext_hostname : s->tlsext_hostname)) 1674 return (TLSEXT_NAMETYPE_host_name); 1675 return (-1); 1676} 1677 1678/* 1679 * SSL_select_next_proto implements standard protocol selection. It is 1680 * expected that this function is called from the callback set by 1681 * SSL_CTX_set_alpn_select_cb. 1682 * 1683 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1684 * strings. The length byte itself is not included in the length. A byte 1685 * string of length 0 is invalid. No byte string may be truncated. 1686 * 1687 * It returns either: 1688 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1689 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1690 */ 1691int 1692SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1693 const unsigned char *server, unsigned int server_len, 1694 const unsigned char *client, unsigned int client_len) 1695{ 1696 unsigned int i, j; 1697 const unsigned char *result; 1698 int status = OPENSSL_NPN_UNSUPPORTED; 1699 1700 /* 1701 * For each protocol in server preference order, 1702 * see if we support it. 1703 */ 1704 for (i = 0; i < server_len; ) { 1705 for (j = 0; j < client_len; ) { 1706 if (server[i] == client[j] && 1707 memcmp(&server[i + 1], 1708 &client[j + 1], server[i]) == 0) { 1709 /* We found a match */ 1710 result = &server[i]; 1711 status = OPENSSL_NPN_NEGOTIATED; 1712 goto found; 1713 } 1714 j += client[j]; 1715 j++; 1716 } 1717 i += server[i]; 1718 i++; 1719 } 1720 1721 /* There's no overlap between our protocols and the server's list. */ 1722 result = client; 1723 status = OPENSSL_NPN_NO_OVERLAP; 1724 1725 found: 1726 *out = (unsigned char *) result + 1; 1727 *outlen = result[0]; 1728 return (status); 1729} 1730 1731/* SSL_get0_next_proto_negotiated is deprecated. */ 1732void 1733SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1734 unsigned int *len) 1735{ 1736 *data = NULL; 1737 *len = 0; 1738} 1739 1740/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1741void 1742SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1743 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1744{ 1745} 1746 1747/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1748void 1749SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1750 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1751 unsigned int inlen, void *arg), void *arg) 1752{ 1753} 1754 1755/* 1756 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1757 * protocols, which must be in wire-format (i.e. a series of non-empty, 1758 * 8-bit length-prefixed strings). Returns 0 on success. 1759 */ 1760int 1761SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1762 unsigned int protos_len) 1763{ 1764 int failed = 1; 1765 1766 if (protos == NULL || protos_len == 0) 1767 goto err; 1768 1769 free(ctx->internal->alpn_client_proto_list); 1770 ctx->internal->alpn_client_proto_list = NULL; 1771 ctx->internal->alpn_client_proto_list_len = 0; 1772 1773 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1774 == NULL) 1775 goto err; 1776 ctx->internal->alpn_client_proto_list_len = protos_len; 1777 1778 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1779 1780 failed = 0; 1781 1782 err: 1783 /* NOTE: Return values are the reverse of what you expect. */ 1784 return (failed); 1785} 1786 1787/* 1788 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1789 * protocols, which must be in wire-format (i.e. a series of non-empty, 1790 * 8-bit length-prefixed strings). Returns 0 on success. 1791 */ 1792int 1793SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1794 unsigned int protos_len) 1795{ 1796 int failed = 1; 1797 1798 if (protos == NULL || protos_len == 0) 1799 goto err; 1800 1801 free(ssl->internal->alpn_client_proto_list); 1802 ssl->internal->alpn_client_proto_list = NULL; 1803 ssl->internal->alpn_client_proto_list_len = 0; 1804 1805 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1806 == NULL) 1807 goto err; 1808 ssl->internal->alpn_client_proto_list_len = protos_len; 1809 1810 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1811 1812 failed = 0; 1813 1814 err: 1815 /* NOTE: Return values are the reverse of what you expect. */ 1816 return (failed); 1817} 1818 1819/* 1820 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1821 * ClientHello processing in order to select an ALPN protocol from the 1822 * client's list of offered protocols. 1823 */ 1824void 1825SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1826 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1827 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1828{ 1829 ctx->internal->alpn_select_cb = cb; 1830 ctx->internal->alpn_select_cb_arg = arg; 1831} 1832 1833/* 1834 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1835 * it sets data to point to len bytes of protocol name (not including the 1836 * leading length-prefix byte). If the server didn't respond with* a negotiated 1837 * protocol then len will be zero. 1838 */ 1839void 1840SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1841 unsigned int *len) 1842{ 1843 *data = ssl->s3->internal->alpn_selected; 1844 *len = ssl->s3->internal->alpn_selected_len; 1845} 1846 1847void 1848SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1849{ 1850 return; 1851} 1852 1853int 1854SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1855 const char *label, size_t llen, const unsigned char *p, size_t plen, 1856 int use_context) 1857{ 1858 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1859 if (!use_context) { 1860 p = NULL; 1861 plen = 0; 1862 } 1863 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1864 out, olen); 1865 } 1866 1867 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1868 use_context)); 1869} 1870 1871static unsigned long 1872ssl_session_hash(const SSL_SESSION *a) 1873{ 1874 unsigned long l; 1875 1876 l = (unsigned long) 1877 ((unsigned int) a->session_id[0] )| 1878 ((unsigned int) a->session_id[1]<< 8L)| 1879 ((unsigned long)a->session_id[2]<<16L)| 1880 ((unsigned long)a->session_id[3]<<24L); 1881 return (l); 1882} 1883 1884/* 1885 * NB: If this function (or indeed the hash function which uses a sort of 1886 * coarser function than this one) is changed, ensure 1887 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1888 * able to construct an SSL_SESSION that will collide with any existing session 1889 * with a matching session ID. 1890 */ 1891static int 1892ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1893{ 1894 if (a->ssl_version != b->ssl_version) 1895 return (1); 1896 if (a->session_id_length != b->session_id_length) 1897 return (1); 1898 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1899 return (1); 1900 return (0); 1901} 1902 1903/* 1904 * These wrapper functions should remain rather than redeclaring 1905 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1906 * variable. The reason is that the functions aren't static, they're exposed via 1907 * ssl.h. 1908 */ 1909static unsigned long 1910ssl_session_LHASH_HASH(const void *arg) 1911{ 1912 const SSL_SESSION *a = arg; 1913 1914 return ssl_session_hash(a); 1915} 1916 1917static int 1918ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1919{ 1920 const SSL_SESSION *a = arg1; 1921 const SSL_SESSION *b = arg2; 1922 1923 return ssl_session_cmp(a, b); 1924} 1925 1926SSL_CTX * 1927SSL_CTX_new(const SSL_METHOD *meth) 1928{ 1929 SSL_CTX *ret; 1930 1931 if (!OPENSSL_init_ssl(0, NULL)) { 1932 SSLerrorx(SSL_R_LIBRARY_BUG); 1933 return (NULL); 1934 } 1935 1936 if (meth == NULL) { 1937 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1938 return (NULL); 1939 } 1940 1941 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1942 SSLerrorx(ERR_R_MALLOC_FAILURE); 1943 return (NULL); 1944 } 1945 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1946 free(ret); 1947 SSLerrorx(ERR_R_MALLOC_FAILURE); 1948 return (NULL); 1949 } 1950 1951 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1952 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1953 goto err; 1954 } 1955 1956 ret->method = meth; 1957 ret->internal->min_tls_version = meth->min_tls_version; 1958 ret->internal->max_tls_version = meth->max_tls_version; 1959 ret->internal->min_proto_version = 0; 1960 ret->internal->max_proto_version = 0; 1961 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1962 1963 ret->cert_store = NULL; 1964 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1965 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1966 ret->internal->session_cache_head = NULL; 1967 ret->internal->session_cache_tail = NULL; 1968 1969 /* We take the system default */ 1970 ret->session_timeout = ssl_get_default_timeout(); 1971 1972 ret->internal->new_session_cb = 0; 1973 ret->internal->remove_session_cb = 0; 1974 ret->internal->get_session_cb = 0; 1975 ret->internal->generate_session_id = 0; 1976 1977 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1978 1979 ret->references = 1; 1980 ret->internal->quiet_shutdown = 0; 1981 1982 ret->internal->info_callback = NULL; 1983 1984 ret->internal->app_verify_callback = 0; 1985 ret->internal->app_verify_arg = NULL; 1986 1987 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1988 ret->internal->read_ahead = 0; 1989 ret->internal->msg_callback = 0; 1990 ret->internal->msg_callback_arg = NULL; 1991 ret->verify_mode = SSL_VERIFY_NONE; 1992 ret->sid_ctx_length = 0; 1993 ret->internal->default_verify_callback = NULL; 1994 1995 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1996 goto err; 1997 1998 ret->default_passwd_callback = 0; 1999 ret->default_passwd_callback_userdata = NULL; 2000 ret->internal->client_cert_cb = 0; 2001 ret->internal->app_gen_cookie_cb = 0; 2002 ret->internal->app_verify_cookie_cb = 0; 2003 2004 ret->internal->sessions = lh_SSL_SESSION_new(); 2005 if (ret->internal->sessions == NULL) 2006 goto err; 2007 ret->cert_store = X509_STORE_new(); 2008 if (ret->cert_store == NULL) 2009 goto err; 2010 2011 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2012 NULL, SSL_DEFAULT_CIPHER_LIST); 2013 if (ret->cipher_list == NULL || 2014 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2015 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2016 goto err2; 2017 } 2018 2019 ret->param = X509_VERIFY_PARAM_new(); 2020 if (!ret->param) 2021 goto err; 2022 2023 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2024 goto err; 2025 2026 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2027 2028 ret->extra_certs = NULL; 2029 2030 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2031 2032 ret->internal->tlsext_servername_callback = 0; 2033 ret->internal->tlsext_servername_arg = NULL; 2034 2035 /* Setup RFC4507 ticket keys */ 2036 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2037 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2038 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2039 2040 ret->internal->tlsext_status_cb = 0; 2041 ret->internal->tlsext_status_arg = NULL; 2042 2043#ifndef OPENSSL_NO_ENGINE 2044 ret->internal->client_cert_engine = NULL; 2045#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2046#define eng_strx(x) #x 2047#define eng_str(x) eng_strx(x) 2048 /* Use specific client engine automatically... ignore errors */ 2049 { 2050 ENGINE *eng; 2051 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2052 if (!eng) { 2053 ERR_clear_error(); 2054 ENGINE_load_builtin_engines(); 2055 eng = ENGINE_by_id(eng_str( 2056 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2057 } 2058 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2059 ERR_clear_error(); 2060 } 2061#endif 2062#endif 2063 /* 2064 * Default is to connect to non-RI servers. When RI is more widely 2065 * deployed might change this. 2066 */ 2067 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2068 2069 return (ret); 2070 err: 2071 SSLerrorx(ERR_R_MALLOC_FAILURE); 2072 err2: 2073 SSL_CTX_free(ret); 2074 return (NULL); 2075} 2076 2077void 2078SSL_CTX_free(SSL_CTX *ctx) 2079{ 2080 int i; 2081 2082 if (ctx == NULL) 2083 return; 2084 2085 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2086 if (i > 0) 2087 return; 2088 2089 X509_VERIFY_PARAM_free(ctx->param); 2090 2091 /* 2092 * Free internal session cache. However: the remove_cb() may reference 2093 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2094 * after the sessions were flushed. 2095 * As the ex_data handling routines might also touch the session cache, 2096 * the most secure solution seems to be: empty (flush) the cache, then 2097 * free ex_data, then finally free the cache. 2098 * (See ticket [openssl.org #212].) 2099 */ 2100 if (ctx->internal->sessions != NULL) 2101 SSL_CTX_flush_sessions(ctx, 0); 2102 2103 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2104 2105 lh_SSL_SESSION_free(ctx->internal->sessions); 2106 2107 X509_STORE_free(ctx->cert_store); 2108 sk_SSL_CIPHER_free(ctx->cipher_list); 2109 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2110 ssl_cert_free(ctx->internal->cert); 2111 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2112 sk_X509_pop_free(ctx->extra_certs, X509_free); 2113 2114#ifndef OPENSSL_NO_SRTP 2115 if (ctx->internal->srtp_profiles) 2116 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2117#endif 2118 2119#ifndef OPENSSL_NO_ENGINE 2120 ENGINE_finish(ctx->internal->client_cert_engine); 2121#endif 2122 2123 free(ctx->internal->tlsext_ecpointformatlist); 2124 free(ctx->internal->tlsext_supportedgroups); 2125 2126 free(ctx->internal->alpn_client_proto_list); 2127 2128 free(ctx->internal); 2129 free(ctx); 2130} 2131 2132int 2133SSL_CTX_up_ref(SSL_CTX *ctx) 2134{ 2135 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2136 return ((refs > 1) ? 1 : 0); 2137} 2138 2139pem_password_cb * 2140SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2141{ 2142 return (ctx->default_passwd_callback); 2143} 2144 2145void 2146SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2147{ 2148 ctx->default_passwd_callback = cb; 2149} 2150 2151void * 2152SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2153{ 2154 return ctx->default_passwd_callback_userdata; 2155} 2156 2157void 2158SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2159{ 2160 ctx->default_passwd_callback_userdata = u; 2161} 2162 2163void 2164SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2165 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2166{ 2167 ctx->internal->app_verify_callback = cb; 2168 ctx->internal->app_verify_arg = arg; 2169} 2170 2171void 2172SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2173{ 2174 ctx->verify_mode = mode; 2175 ctx->internal->default_verify_callback = cb; 2176} 2177 2178void 2179SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2180{ 2181 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2182} 2183 2184static int 2185ssl_cert_can_sign(X509 *x) 2186{ 2187 /* This call populates extension flags (ex_flags). */ 2188 X509_check_purpose(x, -1, 0); 2189 2190 /* Key usage, if present, must allow signing. */ 2191 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2192 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2193} 2194 2195void 2196ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2197{ 2198 unsigned long mask_a, mask_k; 2199 CERT_PKEY *cpk; 2200 2201 if (c == NULL) 2202 return; 2203 2204 mask_a = SSL_aNULL | SSL_aTLS1_3; 2205 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2206 2207 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2208 mask_k |= SSL_kDHE; 2209 2210 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2211 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2212 if (ssl_cert_can_sign(cpk->x509)) 2213 mask_a |= SSL_aECDSA; 2214 } 2215 2216 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2217 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2218 mask_k |= SSL_kGOST; 2219 mask_a |= SSL_aGOST01; 2220 } 2221 2222 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2223 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2224 mask_a |= SSL_aRSA; 2225 mask_k |= SSL_kRSA; 2226 } 2227 2228 c->mask_k = mask_k; 2229 c->mask_a = mask_a; 2230 c->valid = 1; 2231} 2232 2233/* See if this handshake is using an ECC cipher suite. */ 2234int 2235ssl_using_ecc_cipher(SSL *s) 2236{ 2237 unsigned long alg_a, alg_k; 2238 2239 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2240 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2241 2242 return SSI(s)->tlsext_ecpointformatlist != NULL && 2243 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2244 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2245} 2246 2247int 2248ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2249{ 2250 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2251 unsigned long alg_a; 2252 2253 alg_a = cs->algorithm_auth; 2254 2255 if (alg_a & SSL_aECDSA) { 2256 /* This call populates extension flags (ex_flags). */ 2257 X509_check_purpose(x, -1, 0); 2258 2259 /* Key usage, if present, must allow signing. */ 2260 if ((x->ex_flags & EXFLAG_KUSAGE) && 2261 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2262 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2263 return (0); 2264 } 2265 } 2266 2267 return (1); 2268} 2269 2270CERT_PKEY * 2271ssl_get_server_send_pkey(const SSL *s) 2272{ 2273 unsigned long alg_a; 2274 CERT *c; 2275 int i; 2276 2277 c = s->cert; 2278 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2279 2280 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2281 2282 if (alg_a & SSL_aECDSA) { 2283 i = SSL_PKEY_ECC; 2284 } else if (alg_a & SSL_aRSA) { 2285 i = SSL_PKEY_RSA; 2286 } else if (alg_a & SSL_aGOST01) { 2287 i = SSL_PKEY_GOST01; 2288 } else { /* if (alg_a & SSL_aNULL) */ 2289 SSLerror(s, ERR_R_INTERNAL_ERROR); 2290 return (NULL); 2291 } 2292 2293 return (c->pkeys + i); 2294} 2295 2296EVP_PKEY * 2297ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2298 const struct ssl_sigalg **sap) 2299{ 2300 const struct ssl_sigalg *sigalg = NULL; 2301 EVP_PKEY *pkey = NULL; 2302 unsigned long alg_a; 2303 CERT *c; 2304 int idx = -1; 2305 2306 alg_a = cipher->algorithm_auth; 2307 c = s->cert; 2308 2309 if (alg_a & SSL_aRSA) { 2310 idx = SSL_PKEY_RSA; 2311 } else if ((alg_a & SSL_aECDSA) && 2312 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2313 idx = SSL_PKEY_ECC; 2314 if (idx == -1) { 2315 SSLerror(s, ERR_R_INTERNAL_ERROR); 2316 return (NULL); 2317 } 2318 2319 pkey = c->pkeys[idx].privatekey; 2320 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2321 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2322 return (NULL); 2323 } 2324 *pmd = sigalg->md(); 2325 *sap = sigalg; 2326 2327 return (pkey); 2328} 2329 2330DH * 2331ssl_get_auto_dh(SSL *s) 2332{ 2333 CERT_PKEY *cpk; 2334 int keylen; 2335 DH *dhp; 2336 2337 if (s->cert->dh_tmp_auto == 2) { 2338 keylen = 1024; 2339 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2340 keylen = 1024; 2341 if (S3I(s)->hs.cipher->strength_bits == 256) 2342 keylen = 3072; 2343 } else { 2344 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2345 return (NULL); 2346 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2347 return (NULL); 2348 keylen = EVP_PKEY_bits(cpk->privatekey); 2349 } 2350 2351 if ((dhp = DH_new()) == NULL) 2352 return (NULL); 2353 2354 dhp->g = BN_new(); 2355 if (dhp->g != NULL) 2356 BN_set_word(dhp->g, 2); 2357 2358 if (keylen >= 8192) 2359 dhp->p = get_rfc3526_prime_8192(NULL); 2360 else if (keylen >= 4096) 2361 dhp->p = get_rfc3526_prime_4096(NULL); 2362 else if (keylen >= 3072) 2363 dhp->p = get_rfc3526_prime_3072(NULL); 2364 else if (keylen >= 2048) 2365 dhp->p = get_rfc3526_prime_2048(NULL); 2366 else if (keylen >= 1536) 2367 dhp->p = get_rfc3526_prime_1536(NULL); 2368 else 2369 dhp->p = get_rfc2409_prime_1024(NULL); 2370 2371 if (dhp->p == NULL || dhp->g == NULL) { 2372 DH_free(dhp); 2373 return (NULL); 2374 } 2375 return (dhp); 2376} 2377 2378static int 2379ssl_should_update_external_cache(SSL *s, int mode) 2380{ 2381 int cache_mode; 2382 2383 cache_mode = s->session_ctx->internal->session_cache_mode; 2384 2385 /* Don't cache if mode says not to */ 2386 if ((cache_mode & mode) == 0) 2387 return 0; 2388 2389 /* if it is not already cached, cache it */ 2390 if (!s->internal->hit) 2391 return 1; 2392 2393 /* If it's TLS 1.3, do it to match OpenSSL */ 2394 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2395 return 1; 2396 2397 return 0; 2398} 2399 2400static int 2401ssl_should_update_internal_cache(SSL *s, int mode) 2402{ 2403 int cache_mode; 2404 2405 cache_mode = s->session_ctx->internal->session_cache_mode; 2406 2407 /* Don't cache if mode says not to */ 2408 if ((cache_mode & mode) == 0) 2409 return 0; 2410 2411 /* If it is already cached, don't cache it again */ 2412 if (s->internal->hit) 2413 return 0; 2414 2415 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2416 return 0; 2417 2418 /* If we are lesser than TLS 1.3, Cache it. */ 2419 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2420 return 1; 2421 2422 /* Below this we consider TLS 1.3 or later */ 2423 2424 /* If it's not a server, add it? OpenSSL does this. */ 2425 if (!s->server) 2426 return 1; 2427 2428 /* XXX if we support early data / PSK need to add */ 2429 2430 /* 2431 * If we have the remove session callback, we will want 2432 * to know about this even if it's a stateless ticket 2433 * from 1.3 so we can know when it is removed. 2434 */ 2435 if (s->session_ctx->internal->remove_session_cb != NULL) 2436 return 1; 2437 2438 /* If we have set OP_NO_TICKET, cache it. */ 2439 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2440 return 1; 2441 2442 /* Otherwise do not cache */ 2443 return 0; 2444} 2445 2446void 2447ssl_update_cache(SSL *s, int mode) 2448{ 2449 int cache_mode, do_callback; 2450 2451 if (s->session->session_id_length == 0) 2452 return; 2453 2454 cache_mode = s->session_ctx->internal->session_cache_mode; 2455 do_callback = ssl_should_update_external_cache(s, mode); 2456 2457 if (ssl_should_update_internal_cache(s, mode)) { 2458 /* 2459 * XXX should we fail if the add to the internal cache 2460 * fails? OpenSSL doesn't care.. 2461 */ 2462 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2463 } 2464 2465 /* 2466 * Update the "external cache" by calling the new session 2467 * callback if present, even with TLS 1.3 without early data 2468 * "because some application just want to know about the 2469 * creation of a session and aren't doing a full cache". 2470 * Apparently, if they are doing a full cache, they'll have 2471 * some fun, but we endeavour to give application writers the 2472 * same glorious experience they expect from OpenSSL which 2473 * does it this way. 2474 */ 2475 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2476 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2477 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2478 SSL_SESSION_free(s->session); 2479 } 2480 2481 /* Auto flush every 255 connections. */ 2482 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2483 (cache_mode & mode) != 0) { 2484 int connections; 2485 if (mode & SSL_SESS_CACHE_CLIENT) 2486 connections = s->session_ctx->internal->stats.sess_connect_good; 2487 else 2488 connections = s->session_ctx->internal->stats.sess_accept_good; 2489 if ((connections & 0xff) == 0xff) 2490 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2491 } 2492} 2493 2494const SSL_METHOD * 2495SSL_get_ssl_method(SSL *s) 2496{ 2497 return (s->method); 2498} 2499 2500int 2501SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2502{ 2503 int (*handshake_func)(SSL *) = NULL; 2504 int ret = 1; 2505 2506 if (s->method == method) 2507 return (ret); 2508 2509 if (s->internal->handshake_func == s->method->ssl_connect) 2510 handshake_func = method->ssl_connect; 2511 else if (s->internal->handshake_func == s->method->ssl_accept) 2512 handshake_func = method->ssl_accept; 2513 2514 if (s->method->version == method->version) { 2515 s->method = method; 2516 } else { 2517 s->method->ssl_free(s); 2518 s->method = method; 2519 ret = s->method->ssl_new(s); 2520 } 2521 s->internal->handshake_func = handshake_func; 2522 2523 return (ret); 2524} 2525 2526int 2527SSL_get_error(const SSL *s, int i) 2528{ 2529 int reason; 2530 unsigned long l; 2531 BIO *bio; 2532 2533 if (i > 0) 2534 return (SSL_ERROR_NONE); 2535 2536 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2537 * etc, where we do encode the error */ 2538 if ((l = ERR_peek_error()) != 0) { 2539 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2540 return (SSL_ERROR_SYSCALL); 2541 else 2542 return (SSL_ERROR_SSL); 2543 } 2544 2545 if ((i < 0) && SSL_want_read(s)) { 2546 bio = SSL_get_rbio(s); 2547 if (BIO_should_read(bio)) { 2548 return (SSL_ERROR_WANT_READ); 2549 } else if (BIO_should_write(bio)) { 2550 /* 2551 * This one doesn't make too much sense... We never 2552 * try to write to the rbio, and an application 2553 * program where rbio and wbio are separate couldn't 2554 * even know what it should wait for. However if we 2555 * ever set s->internal->rwstate incorrectly (so that we have 2556 * SSL_want_read(s) instead of SSL_want_write(s)) 2557 * and rbio and wbio *are* the same, this test works 2558 * around that bug; so it might be safer to keep it. 2559 */ 2560 return (SSL_ERROR_WANT_WRITE); 2561 } else if (BIO_should_io_special(bio)) { 2562 reason = BIO_get_retry_reason(bio); 2563 if (reason == BIO_RR_CONNECT) 2564 return (SSL_ERROR_WANT_CONNECT); 2565 else if (reason == BIO_RR_ACCEPT) 2566 return (SSL_ERROR_WANT_ACCEPT); 2567 else 2568 return (SSL_ERROR_SYSCALL); /* unknown */ 2569 } 2570 } 2571 2572 if ((i < 0) && SSL_want_write(s)) { 2573 bio = SSL_get_wbio(s); 2574 if (BIO_should_write(bio)) { 2575 return (SSL_ERROR_WANT_WRITE); 2576 } else if (BIO_should_read(bio)) { 2577 /* 2578 * See above (SSL_want_read(s) with 2579 * BIO_should_write(bio)) 2580 */ 2581 return (SSL_ERROR_WANT_READ); 2582 } else if (BIO_should_io_special(bio)) { 2583 reason = BIO_get_retry_reason(bio); 2584 if (reason == BIO_RR_CONNECT) 2585 return (SSL_ERROR_WANT_CONNECT); 2586 else if (reason == BIO_RR_ACCEPT) 2587 return (SSL_ERROR_WANT_ACCEPT); 2588 else 2589 return (SSL_ERROR_SYSCALL); 2590 } 2591 } 2592 if ((i < 0) && SSL_want_x509_lookup(s)) { 2593 return (SSL_ERROR_WANT_X509_LOOKUP); 2594 } 2595 2596 if (i == 0) { 2597 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2598 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2599 return (SSL_ERROR_ZERO_RETURN); 2600 } 2601 return (SSL_ERROR_SYSCALL); 2602} 2603 2604int 2605SSL_do_handshake(SSL *s) 2606{ 2607 int ret = 1; 2608 2609 if (s->internal->handshake_func == NULL) { 2610 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2611 return (-1); 2612 } 2613 2614 s->method->ssl_renegotiate_check(s); 2615 2616 if (SSL_in_init(s) || SSL_in_before(s)) { 2617 ret = s->internal->handshake_func(s); 2618 } 2619 return (ret); 2620} 2621 2622/* 2623 * For the next 2 functions, SSL_clear() sets shutdown and so 2624 * one of these calls will reset it 2625 */ 2626void 2627SSL_set_accept_state(SSL *s) 2628{ 2629 s->server = 1; 2630 s->internal->shutdown = 0; 2631 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2632 s->internal->handshake_func = s->method->ssl_accept; 2633 ssl_clear_cipher_state(s); 2634} 2635 2636void 2637SSL_set_connect_state(SSL *s) 2638{ 2639 s->server = 0; 2640 s->internal->shutdown = 0; 2641 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2642 s->internal->handshake_func = s->method->ssl_connect; 2643 ssl_clear_cipher_state(s); 2644} 2645 2646int 2647ssl_undefined_function(SSL *s) 2648{ 2649 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2650 return (0); 2651} 2652 2653int 2654ssl_undefined_void_function(void) 2655{ 2656 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2657 return (0); 2658} 2659 2660int 2661ssl_undefined_const_function(const SSL *s) 2662{ 2663 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2664 return (0); 2665} 2666 2667const char * 2668ssl_version_string(int ver) 2669{ 2670 switch (ver) { 2671 case TLS1_VERSION: 2672 return (SSL_TXT_TLSV1); 2673 case TLS1_1_VERSION: 2674 return (SSL_TXT_TLSV1_1); 2675 case TLS1_2_VERSION: 2676 return (SSL_TXT_TLSV1_2); 2677 case TLS1_3_VERSION: 2678 return (SSL_TXT_TLSV1_3); 2679 case DTLS1_VERSION: 2680 return (SSL_TXT_DTLS1); 2681 case DTLS1_2_VERSION: 2682 return (SSL_TXT_DTLS1_2); 2683 default: 2684 return ("unknown"); 2685 } 2686} 2687 2688const char * 2689SSL_get_version(const SSL *s) 2690{ 2691 return ssl_version_string(s->version); 2692} 2693 2694SSL * 2695SSL_dup(SSL *s) 2696{ 2697 STACK_OF(X509_NAME) *sk; 2698 X509_NAME *xn; 2699 SSL *ret; 2700 int i; 2701 2702 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2703 goto err; 2704 2705 ret->version = s->version; 2706 ret->method = s->method; 2707 2708 if (s->session != NULL) { 2709 if (!SSL_copy_session_id(ret, s)) 2710 goto err; 2711 } else { 2712 /* 2713 * No session has been established yet, so we have to expect 2714 * that s->cert or ret->cert will be changed later -- 2715 * they should not both point to the same object, 2716 * and thus we can't use SSL_copy_session_id. 2717 */ 2718 2719 ret->method->ssl_free(ret); 2720 ret->method = s->method; 2721 ret->method->ssl_new(ret); 2722 2723 ssl_cert_free(ret->cert); 2724 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2725 goto err; 2726 2727 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2728 s->sid_ctx_length)) 2729 goto err; 2730 } 2731 2732 ret->internal->options = s->internal->options; 2733 ret->internal->mode = s->internal->mode; 2734 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2735 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2736 ret->internal->msg_callback = s->internal->msg_callback; 2737 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2738 SSL_set_verify(ret, SSL_get_verify_mode(s), 2739 SSL_get_verify_callback(s)); 2740 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2741 ret->internal->generate_session_id = s->internal->generate_session_id; 2742 2743 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2744 2745 ret->internal->debug = s->internal->debug; 2746 2747 /* copy app data, a little dangerous perhaps */ 2748 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2749 &ret->internal->ex_data, &s->internal->ex_data)) 2750 goto err; 2751 2752 /* setup rbio, and wbio */ 2753 if (s->rbio != NULL) { 2754 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2755 goto err; 2756 } 2757 if (s->wbio != NULL) { 2758 if (s->wbio != s->rbio) { 2759 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2760 goto err; 2761 } else 2762 ret->wbio = ret->rbio; 2763 } 2764 ret->internal->rwstate = s->internal->rwstate; 2765 ret->internal->in_handshake = s->internal->in_handshake; 2766 ret->internal->handshake_func = s->internal->handshake_func; 2767 ret->server = s->server; 2768 ret->internal->renegotiate = s->internal->renegotiate; 2769 ret->internal->new_session = s->internal->new_session; 2770 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2771 ret->internal->shutdown = s->internal->shutdown; 2772 /* SSL_dup does not really work at any state, though */ 2773 S3I(ret)->hs.state = S3I(s)->hs.state; 2774 ret->internal->rstate = s->internal->rstate; 2775 2776 /* 2777 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2778 * ret->init_off 2779 */ 2780 ret->internal->init_num = 0; 2781 2782 ret->internal->hit = s->internal->hit; 2783 2784 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2785 2786 if (s->cipher_list != NULL) { 2787 if ((ret->cipher_list = 2788 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2789 goto err; 2790 } 2791 if (s->internal->cipher_list_tls13 != NULL) { 2792 if ((ret->internal->cipher_list_tls13 = 2793 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2794 goto err; 2795 } 2796 2797 /* Dup the client_CA list */ 2798 if (s->internal->client_CA != NULL) { 2799 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2800 ret->internal->client_CA = sk; 2801 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2802 xn = sk_X509_NAME_value(sk, i); 2803 if (sk_X509_NAME_set(sk, i, 2804 X509_NAME_dup(xn)) == NULL) { 2805 X509_NAME_free(xn); 2806 goto err; 2807 } 2808 } 2809 } 2810 2811 return ret; 2812 err: 2813 SSL_free(ret); 2814 return NULL; 2815} 2816 2817void 2818ssl_clear_cipher_state(SSL *s) 2819{ 2820 tls12_record_layer_clear_read_state(s->internal->rl); 2821 tls12_record_layer_clear_write_state(s->internal->rl); 2822} 2823 2824void 2825ssl_info_callback(const SSL *s, int type, int value) 2826{ 2827 ssl_info_callback_fn *cb; 2828 2829 if ((cb = s->internal->info_callback) == NULL) 2830 cb = s->ctx->internal->info_callback; 2831 if (cb != NULL) 2832 cb(s, type, value); 2833} 2834 2835void 2836ssl_msg_callback(SSL *s, int is_write, int content_type, 2837 const void *msg_buf, size_t msg_len) 2838{ 2839 if (s->internal->msg_callback != NULL) 2840 s->internal->msg_callback(is_write, s->version, content_type, 2841 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2842} 2843 2844/* Fix this function so that it takes an optional type parameter */ 2845X509 * 2846SSL_get_certificate(const SSL *s) 2847{ 2848 return (s->cert->key->x509); 2849} 2850 2851/* Fix this function so that it takes an optional type parameter */ 2852EVP_PKEY * 2853SSL_get_privatekey(const SSL *s) 2854{ 2855 return (s->cert->key->privatekey); 2856} 2857 2858const SSL_CIPHER * 2859SSL_get_current_cipher(const SSL *s) 2860{ 2861 if ((s->session != NULL) && (s->session->cipher != NULL)) 2862 return (s->session->cipher); 2863 return (NULL); 2864} 2865const void * 2866SSL_get_current_compression(SSL *s) 2867{ 2868 return (NULL); 2869} 2870 2871const void * 2872SSL_get_current_expansion(SSL *s) 2873{ 2874 return (NULL); 2875} 2876 2877size_t 2878SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2879{ 2880 size_t len = sizeof(s->s3->client_random); 2881 2882 if (out == NULL) 2883 return len; 2884 2885 if (len > max_out) 2886 len = max_out; 2887 2888 memcpy(out, s->s3->client_random, len); 2889 2890 return len; 2891} 2892 2893size_t 2894SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2895{ 2896 size_t len = sizeof(s->s3->server_random); 2897 2898 if (out == NULL) 2899 return len; 2900 2901 if (len > max_out) 2902 len = max_out; 2903 2904 memcpy(out, s->s3->server_random, len); 2905 2906 return len; 2907} 2908 2909int 2910ssl_init_wbio_buffer(SSL *s, int push) 2911{ 2912 BIO *bbio; 2913 2914 if (s->bbio == NULL) { 2915 bbio = BIO_new(BIO_f_buffer()); 2916 if (bbio == NULL) 2917 return (0); 2918 s->bbio = bbio; 2919 } else { 2920 bbio = s->bbio; 2921 if (s->bbio == s->wbio) 2922 s->wbio = BIO_pop(s->wbio); 2923 } 2924 (void)BIO_reset(bbio); 2925/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2926 if (!BIO_set_read_buffer_size(bbio, 1)) { 2927 SSLerror(s, ERR_R_BUF_LIB); 2928 return (0); 2929 } 2930 if (push) { 2931 if (s->wbio != bbio) 2932 s->wbio = BIO_push(bbio, s->wbio); 2933 } else { 2934 if (s->wbio == bbio) 2935 s->wbio = BIO_pop(bbio); 2936 } 2937 return (1); 2938} 2939 2940void 2941ssl_free_wbio_buffer(SSL *s) 2942{ 2943 if (s == NULL) 2944 return; 2945 2946 if (s->bbio == NULL) 2947 return; 2948 2949 if (s->bbio == s->wbio) { 2950 /* remove buffering */ 2951 s->wbio = BIO_pop(s->wbio); 2952 } 2953 BIO_free(s->bbio); 2954 s->bbio = NULL; 2955} 2956 2957void 2958SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2959{ 2960 ctx->internal->quiet_shutdown = mode; 2961} 2962 2963int 2964SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2965{ 2966 return (ctx->internal->quiet_shutdown); 2967} 2968 2969void 2970SSL_set_quiet_shutdown(SSL *s, int mode) 2971{ 2972 s->internal->quiet_shutdown = mode; 2973} 2974 2975int 2976SSL_get_quiet_shutdown(const SSL *s) 2977{ 2978 return (s->internal->quiet_shutdown); 2979} 2980 2981void 2982SSL_set_shutdown(SSL *s, int mode) 2983{ 2984 s->internal->shutdown = mode; 2985} 2986 2987int 2988SSL_get_shutdown(const SSL *s) 2989{ 2990 return (s->internal->shutdown); 2991} 2992 2993int 2994SSL_version(const SSL *s) 2995{ 2996 return (s->version); 2997} 2998 2999SSL_CTX * 3000SSL_get_SSL_CTX(const SSL *ssl) 3001{ 3002 return (ssl->ctx); 3003} 3004 3005SSL_CTX * 3006SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 3007{ 3008 CERT *new_cert; 3009 3010 if (ctx == NULL) 3011 ctx = ssl->initial_ctx; 3012 if (ssl->ctx == ctx) 3013 return (ssl->ctx); 3014 3015 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 3016 return NULL; 3017 ssl_cert_free(ssl->cert); 3018 ssl->cert = new_cert; 3019 3020 SSL_CTX_up_ref(ctx); 3021 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3022 ssl->ctx = ctx; 3023 3024 return (ssl->ctx); 3025} 3026 3027int 3028SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3029{ 3030 return (X509_STORE_set_default_paths(ctx->cert_store)); 3031} 3032 3033int 3034SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3035 const char *CApath) 3036{ 3037 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3038} 3039 3040int 3041SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3042{ 3043 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3044} 3045 3046void 3047SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3048{ 3049 ssl->internal->info_callback = cb; 3050} 3051 3052void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3053{ 3054 return (ssl->internal->info_callback); 3055} 3056 3057int 3058SSL_state(const SSL *ssl) 3059{ 3060 return (S3I(ssl)->hs.state); 3061} 3062 3063void 3064SSL_set_state(SSL *ssl, int state) 3065{ 3066 S3I(ssl)->hs.state = state; 3067} 3068 3069void 3070SSL_set_verify_result(SSL *ssl, long arg) 3071{ 3072 ssl->verify_result = arg; 3073} 3074 3075long 3076SSL_get_verify_result(const SSL *ssl) 3077{ 3078 return (ssl->verify_result); 3079} 3080 3081int 3082SSL_verify_client_post_handshake(SSL *ssl) 3083{ 3084 return 0; 3085} 3086 3087void 3088SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3089{ 3090 return; 3091} 3092 3093void 3094SSL_set_post_handshake_auth(SSL *ssl, int val) 3095{ 3096 return; 3097} 3098 3099int 3100SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3101 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3102{ 3103 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3104 new_func, dup_func, free_func)); 3105} 3106 3107int 3108SSL_set_ex_data(SSL *s, int idx, void *arg) 3109{ 3110 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3111} 3112 3113void * 3114SSL_get_ex_data(const SSL *s, int idx) 3115{ 3116 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3117} 3118 3119int 3120SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3121 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3122{ 3123 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3124 new_func, dup_func, free_func)); 3125} 3126 3127int 3128SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3129{ 3130 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3131} 3132 3133void * 3134SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3135{ 3136 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3137} 3138 3139int 3140ssl_ok(SSL *s) 3141{ 3142 return (1); 3143} 3144 3145X509_STORE * 3146SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3147{ 3148 return (ctx->cert_store); 3149} 3150 3151void 3152SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3153{ 3154 X509_STORE_free(ctx->cert_store); 3155 ctx->cert_store = store; 3156} 3157 3158X509 * 3159SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3160{ 3161 if (ctx->internal->cert == NULL) 3162 return NULL; 3163 3164 return ctx->internal->cert->key->x509; 3165} 3166 3167EVP_PKEY * 3168SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3169{ 3170 if (ctx->internal->cert == NULL) 3171 return NULL; 3172 3173 return ctx->internal->cert->key->privatekey; 3174} 3175 3176int 3177SSL_want(const SSL *s) 3178{ 3179 return (s->internal->rwstate); 3180} 3181 3182void 3183SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3184 int keylength)) 3185{ 3186 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3187} 3188 3189void 3190SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3191 int keylength)) 3192{ 3193 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3194} 3195 3196void 3197SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3198 int keylength)) 3199{ 3200 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3201} 3202 3203void 3204SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3205 int keylength)) 3206{ 3207 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3208} 3209 3210void 3211SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3212 int is_export, int keylength)) 3213{ 3214 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3215 (void (*)(void))ecdh); 3216} 3217 3218void 3219SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3220 int keylength)) 3221{ 3222 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3223} 3224 3225 3226void 3227SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3228 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3229{ 3230 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3231 (void (*)(void))cb); 3232} 3233 3234void 3235SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3236 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3237{ 3238 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3239} 3240 3241void 3242SSL_set_debug(SSL *s, int debug) 3243{ 3244 s->internal->debug = debug; 3245} 3246 3247int 3248SSL_cache_hit(SSL *s) 3249{ 3250 return (s->internal->hit); 3251} 3252 3253int 3254SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3255{ 3256 return ctx->internal->min_proto_version; 3257} 3258 3259int 3260SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3261{ 3262 return ssl_version_set_min(ctx->method, version, 3263 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3264 &ctx->internal->min_proto_version); 3265} 3266 3267int 3268SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3269{ 3270 return ctx->internal->max_proto_version; 3271} 3272 3273int 3274SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3275{ 3276 return ssl_version_set_max(ctx->method, version, 3277 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3278 &ctx->internal->max_proto_version); 3279} 3280 3281int 3282SSL_get_min_proto_version(SSL *ssl) 3283{ 3284 return ssl->internal->min_proto_version; 3285} 3286 3287int 3288SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3289{ 3290 return ssl_version_set_min(ssl->method, version, 3291 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3292 &ssl->internal->min_proto_version); 3293} 3294int 3295SSL_get_max_proto_version(SSL *ssl) 3296{ 3297 return ssl->internal->max_proto_version; 3298} 3299 3300int 3301SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3302{ 3303 return ssl_version_set_max(ssl->method, version, 3304 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3305 &ssl->internal->max_proto_version); 3306} 3307 3308const SSL_METHOD * 3309SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3310{ 3311 return ctx->method; 3312} 3313 3314static int 3315ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3316{ 3317 SSL_CIPHER const *a = a_; 3318 SSL_CIPHER const *b = b_; 3319 return ssl_cipher_id_cmp(a, b); 3320} 3321 3322SSL_CIPHER * 3323OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3324{ 3325 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3326 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3327} 3328