ssl_lib.c revision 1.285
1/* $OpenBSD: ssl_lib.c,v 1.285 2022/01/11 18:39:28 jsing Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <arpa/inet.h> 144#include <sys/socket.h> 145#include <netinet/in.h> 146 147#include <limits.h> 148#include <stdio.h> 149 150#include <openssl/dh.h> 151#include <openssl/lhash.h> 152#include <openssl/objects.h> 153#include <openssl/ocsp.h> 154#include <openssl/opensslconf.h> 155#include <openssl/x509v3.h> 156 157#ifndef OPENSSL_NO_ENGINE 158#include <openssl/engine.h> 159#endif 160 161#include "bytestring.h" 162#include "dtls_locl.h" 163#include "ssl_locl.h" 164#include "ssl_sigalgs.h" 165 166const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168int 169SSL_clear(SSL *s) 170{ 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->ssl_new(s)) 213 return (0); 214 } else 215 s->method->ssl_clear(s); 216 217 return (1); 218} 219 220/* Used to change an SSL_CTXs default SSL method type */ 221int 222SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223{ 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 230 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 231 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 232 return (0); 233 } 234 return (1); 235} 236 237SSL * 238SSL_new(SSL_CTX *ctx) 239{ 240 SSL *s; 241 242 if (ctx == NULL) { 243 SSLerrorx(SSL_R_NULL_SSL_CTX); 244 return (NULL); 245 } 246 if (ctx->method == NULL) { 247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 248 return (NULL); 249 } 250 251 if ((s = calloc(1, sizeof(*s))) == NULL) 252 goto err; 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 254 goto err; 255 256 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 257 goto err; 258 259 s->internal->min_tls_version = ctx->internal->min_tls_version; 260 s->internal->max_tls_version = ctx->internal->max_tls_version; 261 s->internal->min_proto_version = ctx->internal->min_proto_version; 262 s->internal->max_proto_version = ctx->internal->max_proto_version; 263 264 s->internal->options = ctx->internal->options; 265 s->internal->mode = ctx->internal->mode; 266 s->internal->max_cert_list = ctx->internal->max_cert_list; 267 s->internal->num_tickets = ctx->internal->num_tickets; 268 269 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 270 goto err; 271 272 s->internal->read_ahead = ctx->internal->read_ahead; 273 s->internal->msg_callback = ctx->internal->msg_callback; 274 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 275 s->verify_mode = ctx->verify_mode; 276 s->sid_ctx_length = ctx->sid_ctx_length; 277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 278 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 279 s->internal->verify_callback = ctx->internal->default_verify_callback; 280 s->internal->generate_session_id = ctx->internal->generate_session_id; 281 282 s->param = X509_VERIFY_PARAM_new(); 283 if (!s->param) 284 goto err; 285 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 286 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 287 s->max_send_fragment = ctx->internal->max_send_fragment; 288 289 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 290 s->ctx = ctx; 291 s->internal->tlsext_debug_cb = 0; 292 s->internal->tlsext_debug_arg = NULL; 293 s->internal->tlsext_ticket_expected = 0; 294 s->tlsext_status_type = -1; 295 s->internal->tlsext_status_expected = 0; 296 s->internal->tlsext_ocsp_ids = NULL; 297 s->internal->tlsext_ocsp_exts = NULL; 298 s->internal->tlsext_ocsp_resp = NULL; 299 s->internal->tlsext_ocsp_resp_len = 0; 300 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 301 s->initial_ctx = ctx; 302 303 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 304 s->internal->tlsext_ecpointformatlist = 305 calloc(ctx->internal->tlsext_ecpointformatlist_length, 306 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 307 if (s->internal->tlsext_ecpointformatlist == NULL) 308 goto err; 309 memcpy(s->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist_length * 312 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 313 s->internal->tlsext_ecpointformatlist_length = 314 ctx->internal->tlsext_ecpointformatlist_length; 315 } 316 if (ctx->internal->tlsext_supportedgroups != NULL) { 317 s->internal->tlsext_supportedgroups = 318 calloc(ctx->internal->tlsext_supportedgroups_length, 319 sizeof(ctx->internal->tlsext_supportedgroups[0])); 320 if (s->internal->tlsext_supportedgroups == NULL) 321 goto err; 322 memcpy(s->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups_length * 325 sizeof(ctx->internal->tlsext_supportedgroups[0])); 326 s->internal->tlsext_supportedgroups_length = 327 ctx->internal->tlsext_supportedgroups_length; 328 } 329 330 if (s->ctx->internal->alpn_client_proto_list != NULL) { 331 s->internal->alpn_client_proto_list = 332 malloc(s->ctx->internal->alpn_client_proto_list_len); 333 if (s->internal->alpn_client_proto_list == NULL) 334 goto err; 335 memcpy(s->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list_len); 338 s->internal->alpn_client_proto_list_len = 339 s->ctx->internal->alpn_client_proto_list_len; 340 } 341 342 s->verify_result = X509_V_OK; 343 344 s->method = ctx->method; 345 346 if (!s->method->ssl_new(s)) 347 goto err; 348 349 s->references = 1; 350 s->server = ctx->method->server; 351 352 SSL_clear(s); 353 354 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 355 356 return (s); 357 358 err: 359 SSL_free(s); 360 SSLerrorx(ERR_R_MALLOC_FAILURE); 361 return (NULL); 362} 363 364int 365SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 366 unsigned int sid_ctx_len) 367{ 368 if (sid_ctx_len > sizeof ctx->sid_ctx) { 369 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 370 return (0); 371 } 372 ctx->sid_ctx_length = sid_ctx_len; 373 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 374 375 return (1); 376} 377 378int 379SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381{ 382 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 383 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ssl->sid_ctx_length = sid_ctx_len; 387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390} 391 392int 393SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 394{ 395 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 396 ctx->internal->generate_session_id = cb; 397 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 398 return (1); 399} 400 401int 402SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 403{ 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 405 ssl->internal->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 407 return (1); 408} 409 410int 411SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 412 unsigned int id_len) 413{ 414 /* 415 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 416 * shows how we can "construct" a session to give us the desired 417 * check - ie. to find if there's a session in the hash table 418 * that would conflict with any new session built out of this 419 * id/id_len and the ssl_version in use by this SSL. 420 */ 421 SSL_SESSION r, *p; 422 423 if (id_len > sizeof r.session_id) 424 return (0); 425 426 r.ssl_version = ssl->version; 427 r.session_id_length = id_len; 428 memcpy(r.session_id, id, id_len); 429 430 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 431 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 432 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 433 return (p != NULL); 434} 435 436int 437SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 438{ 439 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 440} 441 442int 443SSL_set_purpose(SSL *s, int purpose) 444{ 445 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 446} 447 448int 449SSL_CTX_set_trust(SSL_CTX *s, int trust) 450{ 451 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 452} 453 454int 455SSL_set_trust(SSL *s, int trust) 456{ 457 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 458} 459 460int 461SSL_set1_host(SSL *s, const char *hostname) 462{ 463 struct in_addr ina; 464 struct in6_addr in6a; 465 466 if (hostname != NULL && *hostname != '\0' && 467 (inet_pton(AF_INET, hostname, &ina) == 1 || 468 inet_pton(AF_INET6, hostname, &in6a) == 1)) 469 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 470 else 471 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 472} 473 474void 475SSL_set_hostflags(SSL *s, unsigned int flags) 476{ 477 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 478} 479 480const char * 481SSL_get0_peername(SSL *s) 482{ 483 return X509_VERIFY_PARAM_get0_peername(s->param); 484} 485 486X509_VERIFY_PARAM * 487SSL_CTX_get0_param(SSL_CTX *ctx) 488{ 489 return (ctx->param); 490} 491 492int 493SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 494{ 495 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 496} 497 498X509_VERIFY_PARAM * 499SSL_get0_param(SSL *ssl) 500{ 501 return (ssl->param); 502} 503 504int 505SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 506{ 507 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 508} 509 510void 511SSL_free(SSL *s) 512{ 513 int i; 514 515 if (s == NULL) 516 return; 517 518 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 519 if (i > 0) 520 return; 521 522 X509_VERIFY_PARAM_free(s->param); 523 524 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 525 526 if (s->bbio != NULL) { 527 /* If the buffering BIO is in place, pop it off */ 528 if (s->bbio == s->wbio) { 529 s->wbio = BIO_pop(s->wbio); 530 } 531 BIO_free(s->bbio); 532 s->bbio = NULL; 533 } 534 535 if (s->rbio != s->wbio) 536 BIO_free_all(s->rbio); 537 BIO_free_all(s->wbio); 538 539 tls13_ctx_free(s->internal->tls13); 540 541 ssl3_release_init_buffer(s); 542 543 sk_SSL_CIPHER_free(s->cipher_list); 544 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 545 546 /* Make the next call work :-) */ 547 if (s->session != NULL) { 548 ssl_clear_bad_session(s); 549 SSL_SESSION_free(s->session); 550 } 551 552 ssl_clear_cipher_state(s); 553 554 ssl_cert_free(s->cert); 555 556 free(s->tlsext_hostname); 557 SSL_CTX_free(s->initial_ctx); 558 559 free(s->internal->tlsext_ecpointformatlist); 560 free(s->internal->tlsext_supportedgroups); 561 562 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 563 X509_EXTENSION_free); 564 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 565 free(s->internal->tlsext_ocsp_resp); 566 567 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 568 569 if (s->method != NULL) 570 s->method->ssl_free(s); 571 572 SSL_CTX_free(s->ctx); 573 574 free(s->internal->alpn_client_proto_list); 575 576#ifndef OPENSSL_NO_SRTP 577 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 578#endif 579 580 tls12_record_layer_free(s->internal->rl); 581 582 free(s->internal); 583 free(s); 584} 585 586int 587SSL_up_ref(SSL *s) 588{ 589 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 590 return (refs > 1) ? 1 : 0; 591} 592 593void 594SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 595{ 596 /* If the output buffering BIO is still in place, remove it */ 597 if (s->bbio != NULL) { 598 if (s->wbio == s->bbio) { 599 s->wbio = s->wbio->next_bio; 600 s->bbio->next_bio = NULL; 601 } 602 } 603 604 if (s->rbio != rbio && s->rbio != s->wbio) 605 BIO_free_all(s->rbio); 606 if (s->wbio != wbio) 607 BIO_free_all(s->wbio); 608 s->rbio = rbio; 609 s->wbio = wbio; 610} 611 612BIO * 613SSL_get_rbio(const SSL *s) 614{ 615 return (s->rbio); 616} 617 618void 619SSL_set0_rbio(SSL *s, BIO *rbio) 620{ 621 BIO_free_all(s->rbio); 622 s->rbio = rbio; 623} 624 625BIO * 626SSL_get_wbio(const SSL *s) 627{ 628 return (s->wbio); 629} 630 631int 632SSL_get_fd(const SSL *s) 633{ 634 return (SSL_get_rfd(s)); 635} 636 637int 638SSL_get_rfd(const SSL *s) 639{ 640 int ret = -1; 641 BIO *b, *r; 642 643 b = SSL_get_rbio(s); 644 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 645 if (r != NULL) 646 BIO_get_fd(r, &ret); 647 return (ret); 648} 649 650int 651SSL_get_wfd(const SSL *s) 652{ 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_wbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661} 662 663int 664SSL_set_fd(SSL *s, int fd) 665{ 666 int ret = 0; 667 BIO *bio = NULL; 668 669 bio = BIO_new(BIO_s_socket()); 670 671 if (bio == NULL) { 672 SSLerror(s, ERR_R_BUF_LIB); 673 goto err; 674 } 675 BIO_set_fd(bio, fd, BIO_NOCLOSE); 676 SSL_set_bio(s, bio, bio); 677 ret = 1; 678 err: 679 return (ret); 680} 681 682int 683SSL_set_wfd(SSL *s, int fd) 684{ 685 int ret = 0; 686 BIO *bio = NULL; 687 688 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 689 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 690 bio = BIO_new(BIO_s_socket()); 691 692 if (bio == NULL) { 693 SSLerror(s, ERR_R_BUF_LIB); 694 goto err; 695 } 696 BIO_set_fd(bio, fd, BIO_NOCLOSE); 697 SSL_set_bio(s, SSL_get_rbio(s), bio); 698 } else 699 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 700 ret = 1; 701 err: 702 return (ret); 703} 704 705int 706SSL_set_rfd(SSL *s, int fd) 707{ 708 int ret = 0; 709 BIO *bio = NULL; 710 711 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 712 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 713 bio = BIO_new(BIO_s_socket()); 714 715 if (bio == NULL) { 716 SSLerror(s, ERR_R_BUF_LIB); 717 goto err; 718 } 719 BIO_set_fd(bio, fd, BIO_NOCLOSE); 720 SSL_set_bio(s, bio, SSL_get_wbio(s)); 721 } else 722 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 723 ret = 1; 724 err: 725 return (ret); 726} 727 728 729/* return length of latest Finished message we sent, copy to 'buf' */ 730size_t 731SSL_get_finished(const SSL *s, void *buf, size_t count) 732{ 733 size_t ret; 734 735 ret = S3I(s)->hs.finished_len; 736 if (count > ret) 737 count = ret; 738 memcpy(buf, S3I(s)->hs.finished, count); 739 return (ret); 740} 741 742/* return length of latest Finished message we expected, copy to 'buf' */ 743size_t 744SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 745{ 746 size_t ret; 747 748 ret = S3I(s)->hs.peer_finished_len; 749 if (count > ret) 750 count = ret; 751 memcpy(buf, S3I(s)->hs.peer_finished, count); 752 return (ret); 753} 754 755 756int 757SSL_get_verify_mode(const SSL *s) 758{ 759 return (s->verify_mode); 760} 761 762int 763SSL_get_verify_depth(const SSL *s) 764{ 765 return (X509_VERIFY_PARAM_get_depth(s->param)); 766} 767 768int 769(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 770{ 771 return (s->internal->verify_callback); 772} 773 774void 775SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 776{ 777 ctx->internal->keylog_callback = cb; 778} 779 780SSL_CTX_keylog_cb_func 781SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 782{ 783 return (ctx->internal->keylog_callback); 784} 785 786int 787SSL_set_num_tickets(SSL *s, size_t num_tickets) 788{ 789 s->internal->num_tickets = num_tickets; 790 791 return 1; 792} 793 794size_t 795SSL_get_num_tickets(const SSL *s) 796{ 797 return s->internal->num_tickets; 798} 799 800int 801SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 802{ 803 ctx->internal->num_tickets = num_tickets; 804 805 return 1; 806} 807 808size_t 809SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 810{ 811 return ctx->internal->num_tickets; 812} 813 814int 815SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 816{ 817 return (ctx->verify_mode); 818} 819 820int 821SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 822{ 823 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 824} 825 826int 827(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 828{ 829 return (ctx->internal->default_verify_callback); 830} 831 832void 833SSL_set_verify(SSL *s, int mode, 834 int (*callback)(int ok, X509_STORE_CTX *ctx)) 835{ 836 s->verify_mode = mode; 837 if (callback != NULL) 838 s->internal->verify_callback = callback; 839} 840 841void 842SSL_set_verify_depth(SSL *s, int depth) 843{ 844 X509_VERIFY_PARAM_set_depth(s->param, depth); 845} 846 847void 848SSL_set_read_ahead(SSL *s, int yes) 849{ 850 s->internal->read_ahead = yes; 851} 852 853int 854SSL_get_read_ahead(const SSL *s) 855{ 856 return (s->internal->read_ahead); 857} 858 859int 860SSL_pending(const SSL *s) 861{ 862 return (s->method->ssl_pending(s)); 863} 864 865X509 * 866SSL_get_peer_certificate(const SSL *s) 867{ 868 X509 *r; 869 870 if ((s == NULL) || (s->session == NULL)) 871 r = NULL; 872 else 873 r = s->session->peer_cert; 874 875 if (r == NULL) 876 return (r); 877 878 X509_up_ref(r); 879 880 return (r); 881} 882 883STACK_OF(X509) * 884SSL_get_peer_cert_chain(const SSL *s) 885{ 886 if (s == NULL || s->session == NULL) 887 return NULL; 888 889 /* 890 * If we are a client, cert_chain includes the peer's own 891 * certificate; if we are a server, it does not. 892 */ 893 return s->session->cert_chain; 894} 895 896STACK_OF(X509) * 897SSL_get0_verified_chain(const SSL *s) 898{ 899 return s->internal->verified_chain; 900} 901 902/* 903 * Now in theory, since the calling process own 't' it should be safe to 904 * modify. We need to be able to read f without being hassled 905 */ 906int 907SSL_copy_session_id(SSL *t, const SSL *f) 908{ 909 SSL_CERT *tmp; 910 911 /* Do we need to do SSL locking? */ 912 if (!SSL_set_session(t, SSL_get_session(f))) 913 return 0; 914 915 /* What if we are set up for one protocol but want to talk another? */ 916 if (t->method != f->method) { 917 t->method->ssl_free(t); 918 t->method = f->method; 919 if (!t->method->ssl_new(t)) 920 return 0; 921 } 922 923 tmp = t->cert; 924 if (f->cert != NULL) { 925 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 926 t->cert = f->cert; 927 } else 928 t->cert = NULL; 929 ssl_cert_free(tmp); 930 931 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 932 return 0; 933 934 return 1; 935} 936 937/* Fix this so it checks all the valid key/cert options */ 938int 939SSL_CTX_check_private_key(const SSL_CTX *ctx) 940{ 941 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 942 (ctx->internal->cert->key->x509 == NULL)) { 943 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 944 return (0); 945 } 946 if (ctx->internal->cert->key->privatekey == NULL) { 947 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 948 return (0); 949 } 950 return (X509_check_private_key(ctx->internal->cert->key->x509, 951 ctx->internal->cert->key->privatekey)); 952} 953 954/* Fix this function so that it takes an optional type parameter */ 955int 956SSL_check_private_key(const SSL *ssl) 957{ 958 if (ssl == NULL) { 959 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 960 return (0); 961 } 962 if (ssl->cert == NULL) { 963 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 964 return (0); 965 } 966 if (ssl->cert->key->x509 == NULL) { 967 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 968 return (0); 969 } 970 if (ssl->cert->key->privatekey == NULL) { 971 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 972 return (0); 973 } 974 return (X509_check_private_key(ssl->cert->key->x509, 975 ssl->cert->key->privatekey)); 976} 977 978int 979SSL_accept(SSL *s) 980{ 981 if (s->internal->handshake_func == NULL) 982 SSL_set_accept_state(s); /* Not properly initialized yet */ 983 984 return (s->method->ssl_accept(s)); 985} 986 987int 988SSL_connect(SSL *s) 989{ 990 if (s->internal->handshake_func == NULL) 991 SSL_set_connect_state(s); /* Not properly initialized yet */ 992 993 return (s->method->ssl_connect(s)); 994} 995 996int 997SSL_is_dtls(const SSL *s) 998{ 999 return s->method->dtls; 1000} 1001 1002int 1003SSL_is_server(const SSL *s) 1004{ 1005 return s->server; 1006} 1007 1008static long 1009ssl_get_default_timeout() 1010{ 1011 /* 1012 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1013 * is way too long for http, the cache would over fill. 1014 */ 1015 return (2 * 60 * 60); 1016} 1017 1018long 1019SSL_get_default_timeout(const SSL *s) 1020{ 1021 return (ssl_get_default_timeout()); 1022} 1023 1024int 1025SSL_read(SSL *s, void *buf, int num) 1026{ 1027 if (num < 0) { 1028 SSLerror(s, SSL_R_BAD_LENGTH); 1029 return -1; 1030 } 1031 1032 if (s->internal->handshake_func == NULL) { 1033 SSLerror(s, SSL_R_UNINITIALIZED); 1034 return (-1); 1035 } 1036 1037 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1038 s->internal->rwstate = SSL_NOTHING; 1039 return (0); 1040 } 1041 return ssl3_read(s, buf, num); 1042} 1043 1044int 1045SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1046{ 1047 int ret; 1048 1049 /* We simply don't bother supporting enormous reads */ 1050 if (num > INT_MAX) { 1051 SSLerror(s, SSL_R_BAD_LENGTH); 1052 return 0; 1053 } 1054 1055 ret = SSL_read(s, buf, (int)num); 1056 if (ret < 0) 1057 ret = 0; 1058 *bytes_read = ret; 1059 1060 return ret > 0; 1061} 1062 1063int 1064SSL_peek(SSL *s, void *buf, int num) 1065{ 1066 if (num < 0) { 1067 SSLerror(s, SSL_R_BAD_LENGTH); 1068 return -1; 1069 } 1070 1071 if (s->internal->handshake_func == NULL) { 1072 SSLerror(s, SSL_R_UNINITIALIZED); 1073 return (-1); 1074 } 1075 1076 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1077 return (0); 1078 } 1079 return ssl3_peek(s, buf, num); 1080} 1081 1082int 1083SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1084{ 1085 int ret; 1086 1087 /* We simply don't bother supporting enormous peeks */ 1088 if (num > INT_MAX) { 1089 SSLerror(s, SSL_R_BAD_LENGTH); 1090 return 0; 1091 } 1092 1093 ret = SSL_peek(s, buf, (int)num); 1094 if (ret < 0) 1095 ret = 0; 1096 *bytes_peeked = ret; 1097 1098 return ret > 0; 1099} 1100 1101int 1102SSL_write(SSL *s, const void *buf, int num) 1103{ 1104 if (num < 0) { 1105 SSLerror(s, SSL_R_BAD_LENGTH); 1106 return -1; 1107 } 1108 1109 if (s->internal->handshake_func == NULL) { 1110 SSLerror(s, SSL_R_UNINITIALIZED); 1111 return (-1); 1112 } 1113 1114 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1115 s->internal->rwstate = SSL_NOTHING; 1116 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1117 return (-1); 1118 } 1119 return ssl3_write(s, buf, num); 1120} 1121 1122int 1123SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1124{ 1125 int ret; 1126 1127 /* We simply don't bother supporting enormous writes */ 1128 if (num > INT_MAX) { 1129 SSLerror(s, SSL_R_BAD_LENGTH); 1130 return 0; 1131 } 1132 1133 if (num == 0) { 1134 /* This API is special */ 1135 bytes_written = 0; 1136 return 1; 1137 } 1138 1139 ret = SSL_write(s, buf, (int)num); 1140 if (ret < 0) 1141 ret = 0; 1142 *bytes_written = ret; 1143 1144 return ret > 0; 1145} 1146 1147uint32_t 1148SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1149{ 1150 return 0; 1151} 1152 1153int 1154SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1155{ 1156 return 1; 1157} 1158 1159uint32_t 1160SSL_get_max_early_data(const SSL *s) 1161{ 1162 return 0; 1163} 1164 1165int 1166SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1167{ 1168 return 1; 1169} 1170 1171int 1172SSL_get_early_data_status(const SSL *s) 1173{ 1174 return SSL_EARLY_DATA_REJECTED; 1175} 1176 1177int 1178SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1179{ 1180 *readbytes = 0; 1181 1182 if (!s->server) { 1183 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1184 return SSL_READ_EARLY_DATA_ERROR; 1185 } 1186 1187 return SSL_READ_EARLY_DATA_FINISH; 1188} 1189 1190int 1191SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1192{ 1193 *written = 0; 1194 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1195 return 0; 1196} 1197 1198int 1199SSL_shutdown(SSL *s) 1200{ 1201 /* 1202 * Note that this function behaves differently from what one might 1203 * expect. Return values are 0 for no success (yet), 1204 * 1 for success; but calling it once is usually not enough, 1205 * even if blocking I/O is used (see ssl3_shutdown). 1206 */ 1207 1208 if (s->internal->handshake_func == NULL) { 1209 SSLerror(s, SSL_R_UNINITIALIZED); 1210 return (-1); 1211 } 1212 1213 if (s != NULL && !SSL_in_init(s)) 1214 return (s->method->ssl_shutdown(s)); 1215 1216 return (1); 1217} 1218 1219int 1220SSL_renegotiate(SSL *s) 1221{ 1222 if (s->internal->renegotiate == 0) 1223 s->internal->renegotiate = 1; 1224 1225 s->internal->new_session = 1; 1226 1227 return (s->method->ssl_renegotiate(s)); 1228} 1229 1230int 1231SSL_renegotiate_abbreviated(SSL *s) 1232{ 1233 if (s->internal->renegotiate == 0) 1234 s->internal->renegotiate = 1; 1235 1236 s->internal->new_session = 0; 1237 1238 return (s->method->ssl_renegotiate(s)); 1239} 1240 1241int 1242SSL_renegotiate_pending(SSL *s) 1243{ 1244 /* 1245 * Becomes true when negotiation is requested; 1246 * false again once a handshake has finished. 1247 */ 1248 return (s->internal->renegotiate != 0); 1249} 1250 1251long 1252SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1253{ 1254 long l; 1255 1256 switch (cmd) { 1257 case SSL_CTRL_GET_READ_AHEAD: 1258 return (s->internal->read_ahead); 1259 case SSL_CTRL_SET_READ_AHEAD: 1260 l = s->internal->read_ahead; 1261 s->internal->read_ahead = larg; 1262 return (l); 1263 1264 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1265 s->internal->msg_callback_arg = parg; 1266 return (1); 1267 1268 case SSL_CTRL_OPTIONS: 1269 return (s->internal->options|=larg); 1270 case SSL_CTRL_CLEAR_OPTIONS: 1271 return (s->internal->options&=~larg); 1272 case SSL_CTRL_MODE: 1273 return (s->internal->mode|=larg); 1274 case SSL_CTRL_CLEAR_MODE: 1275 return (s->internal->mode &=~larg); 1276 case SSL_CTRL_GET_MAX_CERT_LIST: 1277 return (s->internal->max_cert_list); 1278 case SSL_CTRL_SET_MAX_CERT_LIST: 1279 l = s->internal->max_cert_list; 1280 s->internal->max_cert_list = larg; 1281 return (l); 1282 case SSL_CTRL_SET_MTU: 1283#ifndef OPENSSL_NO_DTLS1 1284 if (larg < (long)dtls1_min_mtu()) 1285 return (0); 1286#endif 1287 if (SSL_is_dtls(s)) { 1288 s->d1->mtu = larg; 1289 return (larg); 1290 } 1291 return (0); 1292 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1293 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1294 return (0); 1295 s->max_send_fragment = larg; 1296 return (1); 1297 case SSL_CTRL_GET_RI_SUPPORT: 1298 if (s->s3) 1299 return (S3I(s)->send_connection_binding); 1300 else return (0); 1301 default: 1302 if (SSL_is_dtls(s)) 1303 return dtls1_ctrl(s, cmd, larg, parg); 1304 return ssl3_ctrl(s, cmd, larg, parg); 1305 } 1306} 1307 1308long 1309SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1310{ 1311 switch (cmd) { 1312 case SSL_CTRL_SET_MSG_CALLBACK: 1313 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1314 return (1); 1315 1316 default: 1317 return (ssl3_callback_ctrl(s, cmd, fp)); 1318 } 1319} 1320 1321struct lhash_st_SSL_SESSION * 1322SSL_CTX_sessions(SSL_CTX *ctx) 1323{ 1324 return (ctx->internal->sessions); 1325} 1326 1327long 1328SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1329{ 1330 long l; 1331 1332 switch (cmd) { 1333 case SSL_CTRL_GET_READ_AHEAD: 1334 return (ctx->internal->read_ahead); 1335 case SSL_CTRL_SET_READ_AHEAD: 1336 l = ctx->internal->read_ahead; 1337 ctx->internal->read_ahead = larg; 1338 return (l); 1339 1340 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1341 ctx->internal->msg_callback_arg = parg; 1342 return (1); 1343 1344 case SSL_CTRL_GET_MAX_CERT_LIST: 1345 return (ctx->internal->max_cert_list); 1346 case SSL_CTRL_SET_MAX_CERT_LIST: 1347 l = ctx->internal->max_cert_list; 1348 ctx->internal->max_cert_list = larg; 1349 return (l); 1350 1351 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1352 l = ctx->internal->session_cache_size; 1353 ctx->internal->session_cache_size = larg; 1354 return (l); 1355 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1356 return (ctx->internal->session_cache_size); 1357 case SSL_CTRL_SET_SESS_CACHE_MODE: 1358 l = ctx->internal->session_cache_mode; 1359 ctx->internal->session_cache_mode = larg; 1360 return (l); 1361 case SSL_CTRL_GET_SESS_CACHE_MODE: 1362 return (ctx->internal->session_cache_mode); 1363 1364 case SSL_CTRL_SESS_NUMBER: 1365 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1366 case SSL_CTRL_SESS_CONNECT: 1367 return (ctx->internal->stats.sess_connect); 1368 case SSL_CTRL_SESS_CONNECT_GOOD: 1369 return (ctx->internal->stats.sess_connect_good); 1370 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1371 return (ctx->internal->stats.sess_connect_renegotiate); 1372 case SSL_CTRL_SESS_ACCEPT: 1373 return (ctx->internal->stats.sess_accept); 1374 case SSL_CTRL_SESS_ACCEPT_GOOD: 1375 return (ctx->internal->stats.sess_accept_good); 1376 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1377 return (ctx->internal->stats.sess_accept_renegotiate); 1378 case SSL_CTRL_SESS_HIT: 1379 return (ctx->internal->stats.sess_hit); 1380 case SSL_CTRL_SESS_CB_HIT: 1381 return (ctx->internal->stats.sess_cb_hit); 1382 case SSL_CTRL_SESS_MISSES: 1383 return (ctx->internal->stats.sess_miss); 1384 case SSL_CTRL_SESS_TIMEOUTS: 1385 return (ctx->internal->stats.sess_timeout); 1386 case SSL_CTRL_SESS_CACHE_FULL: 1387 return (ctx->internal->stats.sess_cache_full); 1388 case SSL_CTRL_OPTIONS: 1389 return (ctx->internal->options|=larg); 1390 case SSL_CTRL_CLEAR_OPTIONS: 1391 return (ctx->internal->options&=~larg); 1392 case SSL_CTRL_MODE: 1393 return (ctx->internal->mode|=larg); 1394 case SSL_CTRL_CLEAR_MODE: 1395 return (ctx->internal->mode&=~larg); 1396 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1397 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1398 return (0); 1399 ctx->internal->max_send_fragment = larg; 1400 return (1); 1401 default: 1402 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1403 } 1404} 1405 1406long 1407SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1408{ 1409 switch (cmd) { 1410 case SSL_CTRL_SET_MSG_CALLBACK: 1411 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1412 return (1); 1413 1414 default: 1415 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1416 } 1417} 1418 1419int 1420ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1421{ 1422 long l; 1423 1424 l = a->id - b->id; 1425 if (l == 0L) 1426 return (0); 1427 else 1428 return ((l > 0) ? 1:-1); 1429} 1430 1431STACK_OF(SSL_CIPHER) * 1432SSL_get_ciphers(const SSL *s) 1433{ 1434 if (s == NULL) 1435 return (NULL); 1436 if (s->cipher_list != NULL) 1437 return (s->cipher_list); 1438 1439 return (s->ctx->cipher_list); 1440} 1441 1442STACK_OF(SSL_CIPHER) * 1443SSL_get_client_ciphers(const SSL *s) 1444{ 1445 if (s == NULL || s->session == NULL || !s->server) 1446 return NULL; 1447 return s->session->ciphers; 1448} 1449 1450STACK_OF(SSL_CIPHER) * 1451SSL_get1_supported_ciphers(SSL *s) 1452{ 1453 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1454 const SSL_CIPHER *cipher; 1455 uint16_t min_vers, max_vers; 1456 int i; 1457 1458 if (s == NULL) 1459 return NULL; 1460 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1461 return NULL; 1462 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1463 return NULL; 1464 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1465 return NULL; 1466 1467 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1468 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1469 goto err; 1470 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1471 max_vers)) 1472 continue; 1473 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1474 goto err; 1475 } 1476 1477 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1478 return supported_ciphers; 1479 1480 err: 1481 sk_SSL_CIPHER_free(supported_ciphers); 1482 return NULL; 1483} 1484 1485/* See if we have any ECC cipher suites. */ 1486int 1487ssl_has_ecc_ciphers(SSL *s) 1488{ 1489 STACK_OF(SSL_CIPHER) *ciphers; 1490 unsigned long alg_k, alg_a; 1491 SSL_CIPHER *cipher; 1492 int i; 1493 1494 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1495 return 0; 1496 1497 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1498 cipher = sk_SSL_CIPHER_value(ciphers, i); 1499 1500 alg_k = cipher->algorithm_mkey; 1501 alg_a = cipher->algorithm_auth; 1502 1503 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1504 return 1; 1505 } 1506 1507 return 0; 1508} 1509 1510/* The old interface to get the same thing as SSL_get_ciphers(). */ 1511const char * 1512SSL_get_cipher_list(const SSL *s, int n) 1513{ 1514 STACK_OF(SSL_CIPHER) *ciphers; 1515 const SSL_CIPHER *cipher; 1516 1517 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1518 return (NULL); 1519 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1520 return (NULL); 1521 1522 return (cipher->name); 1523} 1524 1525STACK_OF(SSL_CIPHER) * 1526SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1527{ 1528 if (ctx == NULL) 1529 return NULL; 1530 return ctx->cipher_list; 1531} 1532 1533/* Specify the ciphers to be used by default by the SSL_CTX. */ 1534int 1535SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1536{ 1537 STACK_OF(SSL_CIPHER) *ciphers; 1538 1539 /* 1540 * ssl_create_cipher_list may return an empty stack if it was unable to 1541 * find a cipher matching the given rule string (for example if the 1542 * rule string specifies a cipher which has been disabled). This is not 1543 * an error as far as ssl_create_cipher_list is concerned, and hence 1544 * ctx->cipher_list has been updated. 1545 */ 1546 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1547 ctx->internal->cipher_list_tls13, str); 1548 if (ciphers == NULL) { 1549 return (0); 1550 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1551 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1552 return (0); 1553 } 1554 return (1); 1555} 1556 1557int 1558SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1559{ 1560 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1561 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1562 return 0; 1563 } 1564 if (!ssl_merge_cipherlists(ctx->cipher_list, 1565 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1566 return 0; 1567 1568 return 1; 1569} 1570 1571/* Specify the ciphers to be used by the SSL. */ 1572int 1573SSL_set_cipher_list(SSL *s, const char *str) 1574{ 1575 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1576 1577 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1578 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1579 1580 /* See comment in SSL_CTX_set_cipher_list. */ 1581 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1582 ciphers_tls13, str); 1583 if (ciphers == NULL) { 1584 return (0); 1585 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1586 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1587 return (0); 1588 } 1589 return (1); 1590} 1591 1592int 1593SSL_set_ciphersuites(SSL *s, const char *str) 1594{ 1595 STACK_OF(SSL_CIPHER) *ciphers; 1596 1597 if ((ciphers = s->cipher_list) == NULL) 1598 ciphers = s->ctx->cipher_list; 1599 1600 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1601 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1602 return (0); 1603 } 1604 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1605 &s->cipher_list)) 1606 return 0; 1607 1608 return 1; 1609} 1610 1611char * 1612SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1613{ 1614 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1615 const SSL_CIPHER *cipher; 1616 size_t curlen = 0; 1617 char *end; 1618 int i; 1619 1620 if (!s->server || s->session == NULL || len < 2) 1621 return NULL; 1622 1623 if ((client_ciphers = s->session->ciphers) == NULL) 1624 return NULL; 1625 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1626 return NULL; 1627 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1628 sk_SSL_CIPHER_num(server_ciphers) == 0) 1629 return NULL; 1630 1631 buf[0] = '\0'; 1632 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1633 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1634 1635 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1636 continue; 1637 1638 end = buf + curlen; 1639 if (strlcat(buf, cipher->name, len) >= len || 1640 (curlen = strlcat(buf, ":", len)) >= len) { 1641 /* remove truncated cipher from list */ 1642 *end = '\0'; 1643 break; 1644 } 1645 } 1646 /* remove trailing colon */ 1647 if ((end = strrchr(buf, ':')) != NULL) 1648 *end = '\0'; 1649 return buf; 1650} 1651 1652/* 1653 * Return a servername extension value if provided in Client Hello, or NULL. 1654 * So far, only host_name types are defined (RFC 3546). 1655 */ 1656const char * 1657SSL_get_servername(const SSL *s, const int type) 1658{ 1659 if (type != TLSEXT_NAMETYPE_host_name) 1660 return (NULL); 1661 1662 return (s->session && !s->tlsext_hostname ? 1663 s->session->tlsext_hostname : 1664 s->tlsext_hostname); 1665} 1666 1667int 1668SSL_get_servername_type(const SSL *s) 1669{ 1670 if (s->session && 1671 (!s->tlsext_hostname ? 1672 s->session->tlsext_hostname : s->tlsext_hostname)) 1673 return (TLSEXT_NAMETYPE_host_name); 1674 return (-1); 1675} 1676 1677/* 1678 * SSL_select_next_proto implements standard protocol selection. It is 1679 * expected that this function is called from the callback set by 1680 * SSL_CTX_set_alpn_select_cb. 1681 * 1682 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1683 * strings. The length byte itself is not included in the length. A byte 1684 * string of length 0 is invalid. No byte string may be truncated. 1685 * 1686 * It returns either: 1687 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1688 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1689 */ 1690int 1691SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1692 const unsigned char *server, unsigned int server_len, 1693 const unsigned char *client, unsigned int client_len) 1694{ 1695 unsigned int i, j; 1696 const unsigned char *result; 1697 int status = OPENSSL_NPN_UNSUPPORTED; 1698 1699 /* 1700 * For each protocol in server preference order, 1701 * see if we support it. 1702 */ 1703 for (i = 0; i < server_len; ) { 1704 for (j = 0; j < client_len; ) { 1705 if (server[i] == client[j] && 1706 memcmp(&server[i + 1], 1707 &client[j + 1], server[i]) == 0) { 1708 /* We found a match */ 1709 result = &server[i]; 1710 status = OPENSSL_NPN_NEGOTIATED; 1711 goto found; 1712 } 1713 j += client[j]; 1714 j++; 1715 } 1716 i += server[i]; 1717 i++; 1718 } 1719 1720 /* There's no overlap between our protocols and the server's list. */ 1721 result = client; 1722 status = OPENSSL_NPN_NO_OVERLAP; 1723 1724 found: 1725 *out = (unsigned char *) result + 1; 1726 *outlen = result[0]; 1727 return (status); 1728} 1729 1730/* SSL_get0_next_proto_negotiated is deprecated. */ 1731void 1732SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1733 unsigned int *len) 1734{ 1735 *data = NULL; 1736 *len = 0; 1737} 1738 1739/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1740void 1741SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1742 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1743{ 1744} 1745 1746/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1747void 1748SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1749 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1750 unsigned int inlen, void *arg), void *arg) 1751{ 1752} 1753 1754/* 1755 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1756 * protocols, which must be in wire-format (i.e. a series of non-empty, 1757 * 8-bit length-prefixed strings). Returns 0 on success. 1758 */ 1759int 1760SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1761 unsigned int protos_len) 1762{ 1763 int failed = 1; 1764 1765 if (protos == NULL || protos_len == 0) 1766 goto err; 1767 1768 free(ctx->internal->alpn_client_proto_list); 1769 ctx->internal->alpn_client_proto_list = NULL; 1770 ctx->internal->alpn_client_proto_list_len = 0; 1771 1772 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1773 == NULL) 1774 goto err; 1775 ctx->internal->alpn_client_proto_list_len = protos_len; 1776 1777 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1778 1779 failed = 0; 1780 1781 err: 1782 /* NOTE: Return values are the reverse of what you expect. */ 1783 return (failed); 1784} 1785 1786/* 1787 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1788 * protocols, which must be in wire-format (i.e. a series of non-empty, 1789 * 8-bit length-prefixed strings). Returns 0 on success. 1790 */ 1791int 1792SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1793 unsigned int protos_len) 1794{ 1795 int failed = 1; 1796 1797 if (protos == NULL || protos_len == 0) 1798 goto err; 1799 1800 free(ssl->internal->alpn_client_proto_list); 1801 ssl->internal->alpn_client_proto_list = NULL; 1802 ssl->internal->alpn_client_proto_list_len = 0; 1803 1804 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1805 == NULL) 1806 goto err; 1807 ssl->internal->alpn_client_proto_list_len = protos_len; 1808 1809 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1810 1811 failed = 0; 1812 1813 err: 1814 /* NOTE: Return values are the reverse of what you expect. */ 1815 return (failed); 1816} 1817 1818/* 1819 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1820 * ClientHello processing in order to select an ALPN protocol from the 1821 * client's list of offered protocols. 1822 */ 1823void 1824SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1825 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1826 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1827{ 1828 ctx->internal->alpn_select_cb = cb; 1829 ctx->internal->alpn_select_cb_arg = arg; 1830} 1831 1832/* 1833 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1834 * it sets data to point to len bytes of protocol name (not including the 1835 * leading length-prefix byte). If the server didn't respond with* a negotiated 1836 * protocol then len will be zero. 1837 */ 1838void 1839SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1840 unsigned int *len) 1841{ 1842 *data = ssl->s3->internal->alpn_selected; 1843 *len = ssl->s3->internal->alpn_selected_len; 1844} 1845 1846void 1847SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1848{ 1849 return; 1850} 1851 1852int 1853SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1854 const char *label, size_t llen, const unsigned char *p, size_t plen, 1855 int use_context) 1856{ 1857 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1858 if (!use_context) { 1859 p = NULL; 1860 plen = 0; 1861 } 1862 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1863 out, olen); 1864 } 1865 1866 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1867 use_context)); 1868} 1869 1870static unsigned long 1871ssl_session_hash(const SSL_SESSION *a) 1872{ 1873 unsigned long l; 1874 1875 l = (unsigned long) 1876 ((unsigned int) a->session_id[0] )| 1877 ((unsigned int) a->session_id[1]<< 8L)| 1878 ((unsigned long)a->session_id[2]<<16L)| 1879 ((unsigned long)a->session_id[3]<<24L); 1880 return (l); 1881} 1882 1883/* 1884 * NB: If this function (or indeed the hash function which uses a sort of 1885 * coarser function than this one) is changed, ensure 1886 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1887 * able to construct an SSL_SESSION that will collide with any existing session 1888 * with a matching session ID. 1889 */ 1890static int 1891ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1892{ 1893 if (a->ssl_version != b->ssl_version) 1894 return (1); 1895 if (a->session_id_length != b->session_id_length) 1896 return (1); 1897 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1898 return (1); 1899 return (0); 1900} 1901 1902/* 1903 * These wrapper functions should remain rather than redeclaring 1904 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1905 * variable. The reason is that the functions aren't static, they're exposed via 1906 * ssl.h. 1907 */ 1908static unsigned long 1909ssl_session_LHASH_HASH(const void *arg) 1910{ 1911 const SSL_SESSION *a = arg; 1912 1913 return ssl_session_hash(a); 1914} 1915 1916static int 1917ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1918{ 1919 const SSL_SESSION *a = arg1; 1920 const SSL_SESSION *b = arg2; 1921 1922 return ssl_session_cmp(a, b); 1923} 1924 1925SSL_CTX * 1926SSL_CTX_new(const SSL_METHOD *meth) 1927{ 1928 SSL_CTX *ret; 1929 1930 if (!OPENSSL_init_ssl(0, NULL)) { 1931 SSLerrorx(SSL_R_LIBRARY_BUG); 1932 return (NULL); 1933 } 1934 1935 if (meth == NULL) { 1936 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1937 return (NULL); 1938 } 1939 1940 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1941 SSLerrorx(ERR_R_MALLOC_FAILURE); 1942 return (NULL); 1943 } 1944 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1945 free(ret); 1946 SSLerrorx(ERR_R_MALLOC_FAILURE); 1947 return (NULL); 1948 } 1949 1950 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1951 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1952 goto err; 1953 } 1954 1955 ret->method = meth; 1956 ret->internal->min_tls_version = meth->min_tls_version; 1957 ret->internal->max_tls_version = meth->max_tls_version; 1958 ret->internal->min_proto_version = 0; 1959 ret->internal->max_proto_version = 0; 1960 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1961 1962 ret->cert_store = NULL; 1963 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1964 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1965 ret->internal->session_cache_head = NULL; 1966 ret->internal->session_cache_tail = NULL; 1967 1968 /* We take the system default */ 1969 ret->session_timeout = ssl_get_default_timeout(); 1970 1971 ret->internal->new_session_cb = 0; 1972 ret->internal->remove_session_cb = 0; 1973 ret->internal->get_session_cb = 0; 1974 ret->internal->generate_session_id = 0; 1975 1976 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1977 1978 ret->references = 1; 1979 ret->internal->quiet_shutdown = 0; 1980 1981 ret->internal->info_callback = NULL; 1982 1983 ret->internal->app_verify_callback = 0; 1984 ret->internal->app_verify_arg = NULL; 1985 1986 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1987 ret->internal->read_ahead = 0; 1988 ret->internal->msg_callback = 0; 1989 ret->internal->msg_callback_arg = NULL; 1990 ret->verify_mode = SSL_VERIFY_NONE; 1991 ret->sid_ctx_length = 0; 1992 ret->internal->default_verify_callback = NULL; 1993 1994 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1995 goto err; 1996 1997 ret->default_passwd_callback = 0; 1998 ret->default_passwd_callback_userdata = NULL; 1999 ret->internal->client_cert_cb = 0; 2000 ret->internal->app_gen_cookie_cb = 0; 2001 ret->internal->app_verify_cookie_cb = 0; 2002 2003 ret->internal->sessions = lh_SSL_SESSION_new(); 2004 if (ret->internal->sessions == NULL) 2005 goto err; 2006 ret->cert_store = X509_STORE_new(); 2007 if (ret->cert_store == NULL) 2008 goto err; 2009 2010 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2011 NULL, SSL_DEFAULT_CIPHER_LIST); 2012 if (ret->cipher_list == NULL || 2013 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2014 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2015 goto err2; 2016 } 2017 2018 ret->param = X509_VERIFY_PARAM_new(); 2019 if (!ret->param) 2020 goto err; 2021 2022 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2023 goto err; 2024 2025 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2026 2027 ret->extra_certs = NULL; 2028 2029 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2030 2031 ret->internal->tlsext_servername_callback = 0; 2032 ret->internal->tlsext_servername_arg = NULL; 2033 2034 /* Setup RFC4507 ticket keys */ 2035 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2036 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2037 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2038 2039 ret->internal->tlsext_status_cb = 0; 2040 ret->internal->tlsext_status_arg = NULL; 2041 2042#ifndef OPENSSL_NO_ENGINE 2043 ret->internal->client_cert_engine = NULL; 2044#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2045#define eng_strx(x) #x 2046#define eng_str(x) eng_strx(x) 2047 /* Use specific client engine automatically... ignore errors */ 2048 { 2049 ENGINE *eng; 2050 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2051 if (!eng) { 2052 ERR_clear_error(); 2053 ENGINE_load_builtin_engines(); 2054 eng = ENGINE_by_id(eng_str( 2055 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2056 } 2057 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2058 ERR_clear_error(); 2059 } 2060#endif 2061#endif 2062 /* 2063 * Default is to connect to non-RI servers. When RI is more widely 2064 * deployed might change this. 2065 */ 2066 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2067 2068 return (ret); 2069 err: 2070 SSLerrorx(ERR_R_MALLOC_FAILURE); 2071 err2: 2072 SSL_CTX_free(ret); 2073 return (NULL); 2074} 2075 2076void 2077SSL_CTX_free(SSL_CTX *ctx) 2078{ 2079 int i; 2080 2081 if (ctx == NULL) 2082 return; 2083 2084 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2085 if (i > 0) 2086 return; 2087 2088 X509_VERIFY_PARAM_free(ctx->param); 2089 2090 /* 2091 * Free internal session cache. However: the remove_cb() may reference 2092 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2093 * after the sessions were flushed. 2094 * As the ex_data handling routines might also touch the session cache, 2095 * the most secure solution seems to be: empty (flush) the cache, then 2096 * free ex_data, then finally free the cache. 2097 * (See ticket [openssl.org #212].) 2098 */ 2099 if (ctx->internal->sessions != NULL) 2100 SSL_CTX_flush_sessions(ctx, 0); 2101 2102 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2103 2104 lh_SSL_SESSION_free(ctx->internal->sessions); 2105 2106 X509_STORE_free(ctx->cert_store); 2107 sk_SSL_CIPHER_free(ctx->cipher_list); 2108 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2109 ssl_cert_free(ctx->internal->cert); 2110 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2111 sk_X509_pop_free(ctx->extra_certs, X509_free); 2112 2113#ifndef OPENSSL_NO_SRTP 2114 if (ctx->internal->srtp_profiles) 2115 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2116#endif 2117 2118#ifndef OPENSSL_NO_ENGINE 2119 ENGINE_finish(ctx->internal->client_cert_engine); 2120#endif 2121 2122 free(ctx->internal->tlsext_ecpointformatlist); 2123 free(ctx->internal->tlsext_supportedgroups); 2124 2125 free(ctx->internal->alpn_client_proto_list); 2126 2127 free(ctx->internal); 2128 free(ctx); 2129} 2130 2131int 2132SSL_CTX_up_ref(SSL_CTX *ctx) 2133{ 2134 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2135 return ((refs > 1) ? 1 : 0); 2136} 2137 2138pem_password_cb * 2139SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2140{ 2141 return (ctx->default_passwd_callback); 2142} 2143 2144void 2145SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2146{ 2147 ctx->default_passwd_callback = cb; 2148} 2149 2150void * 2151SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2152{ 2153 return ctx->default_passwd_callback_userdata; 2154} 2155 2156void 2157SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2158{ 2159 ctx->default_passwd_callback_userdata = u; 2160} 2161 2162void 2163SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2164 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2165{ 2166 ctx->internal->app_verify_callback = cb; 2167 ctx->internal->app_verify_arg = arg; 2168} 2169 2170void 2171SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2172{ 2173 ctx->verify_mode = mode; 2174 ctx->internal->default_verify_callback = cb; 2175} 2176 2177void 2178SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2179{ 2180 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2181} 2182 2183void 2184ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2185{ 2186 unsigned long mask_a, mask_k; 2187 SSL_CERT_PKEY *cpk; 2188 2189 if (c == NULL) 2190 return; 2191 2192 mask_a = SSL_aNULL | SSL_aTLS1_3; 2193 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2194 2195 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2196 c->dhe_params_auto != 0) 2197 mask_k |= SSL_kDHE; 2198 2199 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2200 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2201 /* Key usage, if present, must allow signing. */ 2202 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2203 mask_a |= SSL_aECDSA; 2204 } 2205 2206 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2207 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2208 mask_k |= SSL_kGOST; 2209 mask_a |= SSL_aGOST01; 2210 } 2211 2212 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2213 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2214 mask_a |= SSL_aRSA; 2215 mask_k |= SSL_kRSA; 2216 } 2217 2218 c->mask_k = mask_k; 2219 c->mask_a = mask_a; 2220 c->valid = 1; 2221} 2222 2223/* See if this handshake is using an ECC cipher suite. */ 2224int 2225ssl_using_ecc_cipher(SSL *s) 2226{ 2227 unsigned long alg_a, alg_k; 2228 2229 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2230 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2231 2232 return s->session->tlsext_ecpointformatlist != NULL && 2233 s->session->tlsext_ecpointformatlist_length > 0 && 2234 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2235} 2236 2237int 2238ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2239{ 2240 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2241 unsigned long alg_a; 2242 2243 alg_a = cs->algorithm_auth; 2244 2245 if (alg_a & SSL_aECDSA) { 2246 /* Key usage, if present, must allow signing. */ 2247 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2248 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2249 return (0); 2250 } 2251 } 2252 2253 return (1); 2254} 2255 2256SSL_CERT_PKEY * 2257ssl_get_server_send_pkey(const SSL *s) 2258{ 2259 unsigned long alg_a; 2260 SSL_CERT *c; 2261 int i; 2262 2263 c = s->cert; 2264 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2265 2266 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2267 2268 if (alg_a & SSL_aECDSA) { 2269 i = SSL_PKEY_ECC; 2270 } else if (alg_a & SSL_aRSA) { 2271 i = SSL_PKEY_RSA; 2272 } else if (alg_a & SSL_aGOST01) { 2273 i = SSL_PKEY_GOST01; 2274 } else { /* if (alg_a & SSL_aNULL) */ 2275 SSLerror(s, ERR_R_INTERNAL_ERROR); 2276 return (NULL); 2277 } 2278 2279 return (c->pkeys + i); 2280} 2281 2282EVP_PKEY * 2283ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2284 const struct ssl_sigalg **sap) 2285{ 2286 const struct ssl_sigalg *sigalg = NULL; 2287 EVP_PKEY *pkey = NULL; 2288 unsigned long alg_a; 2289 SSL_CERT *c; 2290 int idx = -1; 2291 2292 alg_a = cipher->algorithm_auth; 2293 c = s->cert; 2294 2295 if (alg_a & SSL_aRSA) { 2296 idx = SSL_PKEY_RSA; 2297 } else if ((alg_a & SSL_aECDSA) && 2298 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2299 idx = SSL_PKEY_ECC; 2300 if (idx == -1) { 2301 SSLerror(s, ERR_R_INTERNAL_ERROR); 2302 return (NULL); 2303 } 2304 2305 pkey = c->pkeys[idx].privatekey; 2306 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2307 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2308 return (NULL); 2309 } 2310 *pmd = sigalg->md(); 2311 *sap = sigalg; 2312 2313 return (pkey); 2314} 2315 2316size_t 2317ssl_dhe_params_auto_key_bits(SSL *s) 2318{ 2319 SSL_CERT_PKEY *cpk; 2320 int key_bits; 2321 2322 if (s->cert->dhe_params_auto == 2) { 2323 key_bits = 1024; 2324 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2325 key_bits = 1024; 2326 if (S3I(s)->hs.cipher->strength_bits == 256) 2327 key_bits = 3072; 2328 } else { 2329 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2330 return 0; 2331 if (cpk->privatekey == NULL || 2332 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2333 return 0; 2334 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2335 return 0; 2336 } 2337 2338 return key_bits; 2339} 2340 2341static int 2342ssl_should_update_external_cache(SSL *s, int mode) 2343{ 2344 int cache_mode; 2345 2346 cache_mode = s->session_ctx->internal->session_cache_mode; 2347 2348 /* Don't cache if mode says not to */ 2349 if ((cache_mode & mode) == 0) 2350 return 0; 2351 2352 /* if it is not already cached, cache it */ 2353 if (!s->internal->hit) 2354 return 1; 2355 2356 /* If it's TLS 1.3, do it to match OpenSSL */ 2357 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2358 return 1; 2359 2360 return 0; 2361} 2362 2363static int 2364ssl_should_update_internal_cache(SSL *s, int mode) 2365{ 2366 int cache_mode; 2367 2368 cache_mode = s->session_ctx->internal->session_cache_mode; 2369 2370 /* Don't cache if mode says not to */ 2371 if ((cache_mode & mode) == 0) 2372 return 0; 2373 2374 /* If it is already cached, don't cache it again */ 2375 if (s->internal->hit) 2376 return 0; 2377 2378 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2379 return 0; 2380 2381 /* If we are lesser than TLS 1.3, Cache it. */ 2382 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2383 return 1; 2384 2385 /* Below this we consider TLS 1.3 or later */ 2386 2387 /* If it's not a server, add it? OpenSSL does this. */ 2388 if (!s->server) 2389 return 1; 2390 2391 /* XXX if we support early data / PSK need to add */ 2392 2393 /* 2394 * If we have the remove session callback, we will want 2395 * to know about this even if it's a stateless ticket 2396 * from 1.3 so we can know when it is removed. 2397 */ 2398 if (s->session_ctx->internal->remove_session_cb != NULL) 2399 return 1; 2400 2401 /* If we have set OP_NO_TICKET, cache it. */ 2402 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2403 return 1; 2404 2405 /* Otherwise do not cache */ 2406 return 0; 2407} 2408 2409void 2410ssl_update_cache(SSL *s, int mode) 2411{ 2412 int cache_mode, do_callback; 2413 2414 if (s->session->session_id_length == 0) 2415 return; 2416 2417 cache_mode = s->session_ctx->internal->session_cache_mode; 2418 do_callback = ssl_should_update_external_cache(s, mode); 2419 2420 if (ssl_should_update_internal_cache(s, mode)) { 2421 /* 2422 * XXX should we fail if the add to the internal cache 2423 * fails? OpenSSL doesn't care.. 2424 */ 2425 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2426 } 2427 2428 /* 2429 * Update the "external cache" by calling the new session 2430 * callback if present, even with TLS 1.3 without early data 2431 * "because some application just want to know about the 2432 * creation of a session and aren't doing a full cache". 2433 * Apparently, if they are doing a full cache, they'll have 2434 * some fun, but we endeavour to give application writers the 2435 * same glorious experience they expect from OpenSSL which 2436 * does it this way. 2437 */ 2438 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2439 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2440 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2441 SSL_SESSION_free(s->session); 2442 } 2443 2444 /* Auto flush every 255 connections. */ 2445 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2446 (cache_mode & mode) != 0) { 2447 int connections; 2448 if (mode & SSL_SESS_CACHE_CLIENT) 2449 connections = s->session_ctx->internal->stats.sess_connect_good; 2450 else 2451 connections = s->session_ctx->internal->stats.sess_accept_good; 2452 if ((connections & 0xff) == 0xff) 2453 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2454 } 2455} 2456 2457const SSL_METHOD * 2458SSL_get_ssl_method(SSL *s) 2459{ 2460 return (s->method); 2461} 2462 2463int 2464SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2465{ 2466 int (*handshake_func)(SSL *) = NULL; 2467 int ret = 1; 2468 2469 if (s->method == method) 2470 return (ret); 2471 2472 if (s->internal->handshake_func == s->method->ssl_connect) 2473 handshake_func = method->ssl_connect; 2474 else if (s->internal->handshake_func == s->method->ssl_accept) 2475 handshake_func = method->ssl_accept; 2476 2477 if (s->method->version == method->version) { 2478 s->method = method; 2479 } else { 2480 s->method->ssl_free(s); 2481 s->method = method; 2482 ret = s->method->ssl_new(s); 2483 } 2484 s->internal->handshake_func = handshake_func; 2485 2486 return (ret); 2487} 2488 2489int 2490SSL_get_error(const SSL *s, int i) 2491{ 2492 int reason; 2493 unsigned long l; 2494 BIO *bio; 2495 2496 if (i > 0) 2497 return (SSL_ERROR_NONE); 2498 2499 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2500 * etc, where we do encode the error */ 2501 if ((l = ERR_peek_error()) != 0) { 2502 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2503 return (SSL_ERROR_SYSCALL); 2504 else 2505 return (SSL_ERROR_SSL); 2506 } 2507 2508 if ((i < 0) && SSL_want_read(s)) { 2509 bio = SSL_get_rbio(s); 2510 if (BIO_should_read(bio)) { 2511 return (SSL_ERROR_WANT_READ); 2512 } else if (BIO_should_write(bio)) { 2513 /* 2514 * This one doesn't make too much sense... We never 2515 * try to write to the rbio, and an application 2516 * program where rbio and wbio are separate couldn't 2517 * even know what it should wait for. However if we 2518 * ever set s->internal->rwstate incorrectly (so that we have 2519 * SSL_want_read(s) instead of SSL_want_write(s)) 2520 * and rbio and wbio *are* the same, this test works 2521 * around that bug; so it might be safer to keep it. 2522 */ 2523 return (SSL_ERROR_WANT_WRITE); 2524 } else if (BIO_should_io_special(bio)) { 2525 reason = BIO_get_retry_reason(bio); 2526 if (reason == BIO_RR_CONNECT) 2527 return (SSL_ERROR_WANT_CONNECT); 2528 else if (reason == BIO_RR_ACCEPT) 2529 return (SSL_ERROR_WANT_ACCEPT); 2530 else 2531 return (SSL_ERROR_SYSCALL); /* unknown */ 2532 } 2533 } 2534 2535 if ((i < 0) && SSL_want_write(s)) { 2536 bio = SSL_get_wbio(s); 2537 if (BIO_should_write(bio)) { 2538 return (SSL_ERROR_WANT_WRITE); 2539 } else if (BIO_should_read(bio)) { 2540 /* 2541 * See above (SSL_want_read(s) with 2542 * BIO_should_write(bio)) 2543 */ 2544 return (SSL_ERROR_WANT_READ); 2545 } else if (BIO_should_io_special(bio)) { 2546 reason = BIO_get_retry_reason(bio); 2547 if (reason == BIO_RR_CONNECT) 2548 return (SSL_ERROR_WANT_CONNECT); 2549 else if (reason == BIO_RR_ACCEPT) 2550 return (SSL_ERROR_WANT_ACCEPT); 2551 else 2552 return (SSL_ERROR_SYSCALL); 2553 } 2554 } 2555 if ((i < 0) && SSL_want_x509_lookup(s)) { 2556 return (SSL_ERROR_WANT_X509_LOOKUP); 2557 } 2558 2559 if (i == 0) { 2560 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2561 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2562 return (SSL_ERROR_ZERO_RETURN); 2563 } 2564 return (SSL_ERROR_SYSCALL); 2565} 2566 2567int 2568SSL_do_handshake(SSL *s) 2569{ 2570 int ret = 1; 2571 2572 if (s->internal->handshake_func == NULL) { 2573 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2574 return (-1); 2575 } 2576 2577 s->method->ssl_renegotiate_check(s); 2578 2579 if (SSL_in_init(s) || SSL_in_before(s)) { 2580 ret = s->internal->handshake_func(s); 2581 } 2582 return (ret); 2583} 2584 2585/* 2586 * For the next 2 functions, SSL_clear() sets shutdown and so 2587 * one of these calls will reset it 2588 */ 2589void 2590SSL_set_accept_state(SSL *s) 2591{ 2592 s->server = 1; 2593 s->internal->shutdown = 0; 2594 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2595 s->internal->handshake_func = s->method->ssl_accept; 2596 ssl_clear_cipher_state(s); 2597} 2598 2599void 2600SSL_set_connect_state(SSL *s) 2601{ 2602 s->server = 0; 2603 s->internal->shutdown = 0; 2604 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2605 s->internal->handshake_func = s->method->ssl_connect; 2606 ssl_clear_cipher_state(s); 2607} 2608 2609int 2610ssl_undefined_function(SSL *s) 2611{ 2612 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2613 return (0); 2614} 2615 2616int 2617ssl_undefined_void_function(void) 2618{ 2619 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2620 return (0); 2621} 2622 2623int 2624ssl_undefined_const_function(const SSL *s) 2625{ 2626 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2627 return (0); 2628} 2629 2630const char * 2631ssl_version_string(int ver) 2632{ 2633 switch (ver) { 2634 case TLS1_VERSION: 2635 return (SSL_TXT_TLSV1); 2636 case TLS1_1_VERSION: 2637 return (SSL_TXT_TLSV1_1); 2638 case TLS1_2_VERSION: 2639 return (SSL_TXT_TLSV1_2); 2640 case TLS1_3_VERSION: 2641 return (SSL_TXT_TLSV1_3); 2642 case DTLS1_VERSION: 2643 return (SSL_TXT_DTLS1); 2644 case DTLS1_2_VERSION: 2645 return (SSL_TXT_DTLS1_2); 2646 default: 2647 return ("unknown"); 2648 } 2649} 2650 2651const char * 2652SSL_get_version(const SSL *s) 2653{ 2654 return ssl_version_string(s->version); 2655} 2656 2657SSL * 2658SSL_dup(SSL *s) 2659{ 2660 STACK_OF(X509_NAME) *sk; 2661 X509_NAME *xn; 2662 SSL *ret; 2663 int i; 2664 2665 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2666 goto err; 2667 2668 ret->version = s->version; 2669 ret->method = s->method; 2670 2671 if (s->session != NULL) { 2672 if (!SSL_copy_session_id(ret, s)) 2673 goto err; 2674 } else { 2675 /* 2676 * No session has been established yet, so we have to expect 2677 * that s->cert or ret->cert will be changed later -- 2678 * they should not both point to the same object, 2679 * and thus we can't use SSL_copy_session_id. 2680 */ 2681 2682 ret->method->ssl_free(ret); 2683 ret->method = s->method; 2684 ret->method->ssl_new(ret); 2685 2686 ssl_cert_free(ret->cert); 2687 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2688 goto err; 2689 2690 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2691 s->sid_ctx_length)) 2692 goto err; 2693 } 2694 2695 ret->internal->options = s->internal->options; 2696 ret->internal->mode = s->internal->mode; 2697 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2698 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2699 ret->internal->msg_callback = s->internal->msg_callback; 2700 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2701 SSL_set_verify(ret, SSL_get_verify_mode(s), 2702 SSL_get_verify_callback(s)); 2703 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2704 ret->internal->generate_session_id = s->internal->generate_session_id; 2705 2706 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2707 2708 ret->internal->debug = s->internal->debug; 2709 2710 /* copy app data, a little dangerous perhaps */ 2711 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2712 &ret->internal->ex_data, &s->internal->ex_data)) 2713 goto err; 2714 2715 /* setup rbio, and wbio */ 2716 if (s->rbio != NULL) { 2717 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2718 goto err; 2719 } 2720 if (s->wbio != NULL) { 2721 if (s->wbio != s->rbio) { 2722 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2723 goto err; 2724 } else 2725 ret->wbio = ret->rbio; 2726 } 2727 ret->internal->rwstate = s->internal->rwstate; 2728 ret->internal->in_handshake = s->internal->in_handshake; 2729 ret->internal->handshake_func = s->internal->handshake_func; 2730 ret->server = s->server; 2731 ret->internal->renegotiate = s->internal->renegotiate; 2732 ret->internal->new_session = s->internal->new_session; 2733 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2734 ret->internal->shutdown = s->internal->shutdown; 2735 /* SSL_dup does not really work at any state, though */ 2736 S3I(ret)->hs.state = S3I(s)->hs.state; 2737 ret->internal->rstate = s->internal->rstate; 2738 2739 /* 2740 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2741 * ret->init_off 2742 */ 2743 ret->internal->init_num = 0; 2744 2745 ret->internal->hit = s->internal->hit; 2746 2747 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2748 2749 if (s->cipher_list != NULL) { 2750 if ((ret->cipher_list = 2751 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2752 goto err; 2753 } 2754 if (s->internal->cipher_list_tls13 != NULL) { 2755 if ((ret->internal->cipher_list_tls13 = 2756 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2757 goto err; 2758 } 2759 2760 /* Dup the client_CA list */ 2761 if (s->internal->client_CA != NULL) { 2762 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2763 ret->internal->client_CA = sk; 2764 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2765 xn = sk_X509_NAME_value(sk, i); 2766 if (sk_X509_NAME_set(sk, i, 2767 X509_NAME_dup(xn)) == NULL) { 2768 X509_NAME_free(xn); 2769 goto err; 2770 } 2771 } 2772 } 2773 2774 return ret; 2775 err: 2776 SSL_free(ret); 2777 return NULL; 2778} 2779 2780void 2781ssl_clear_cipher_state(SSL *s) 2782{ 2783 tls12_record_layer_clear_read_state(s->internal->rl); 2784 tls12_record_layer_clear_write_state(s->internal->rl); 2785} 2786 2787void 2788ssl_info_callback(const SSL *s, int type, int value) 2789{ 2790 ssl_info_callback_fn *cb; 2791 2792 if ((cb = s->internal->info_callback) == NULL) 2793 cb = s->ctx->internal->info_callback; 2794 if (cb != NULL) 2795 cb(s, type, value); 2796} 2797 2798void 2799ssl_msg_callback(SSL *s, int is_write, int content_type, 2800 const void *msg_buf, size_t msg_len) 2801{ 2802 if (s->internal->msg_callback != NULL) 2803 s->internal->msg_callback(is_write, s->version, content_type, 2804 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2805} 2806 2807/* Fix this function so that it takes an optional type parameter */ 2808X509 * 2809SSL_get_certificate(const SSL *s) 2810{ 2811 return (s->cert->key->x509); 2812} 2813 2814/* Fix this function so that it takes an optional type parameter */ 2815EVP_PKEY * 2816SSL_get_privatekey(const SSL *s) 2817{ 2818 return (s->cert->key->privatekey); 2819} 2820 2821const SSL_CIPHER * 2822SSL_get_current_cipher(const SSL *s) 2823{ 2824 if ((s->session != NULL) && (s->session->cipher != NULL)) 2825 return (s->session->cipher); 2826 return (NULL); 2827} 2828const void * 2829SSL_get_current_compression(SSL *s) 2830{ 2831 return (NULL); 2832} 2833 2834const void * 2835SSL_get_current_expansion(SSL *s) 2836{ 2837 return (NULL); 2838} 2839 2840size_t 2841SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2842{ 2843 size_t len = sizeof(s->s3->client_random); 2844 2845 if (out == NULL) 2846 return len; 2847 2848 if (len > max_out) 2849 len = max_out; 2850 2851 memcpy(out, s->s3->client_random, len); 2852 2853 return len; 2854} 2855 2856size_t 2857SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2858{ 2859 size_t len = sizeof(s->s3->server_random); 2860 2861 if (out == NULL) 2862 return len; 2863 2864 if (len > max_out) 2865 len = max_out; 2866 2867 memcpy(out, s->s3->server_random, len); 2868 2869 return len; 2870} 2871 2872int 2873ssl_init_wbio_buffer(SSL *s, int push) 2874{ 2875 BIO *bbio; 2876 2877 if (s->bbio == NULL) { 2878 bbio = BIO_new(BIO_f_buffer()); 2879 if (bbio == NULL) 2880 return (0); 2881 s->bbio = bbio; 2882 } else { 2883 bbio = s->bbio; 2884 if (s->bbio == s->wbio) 2885 s->wbio = BIO_pop(s->wbio); 2886 } 2887 (void)BIO_reset(bbio); 2888/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2889 if (!BIO_set_read_buffer_size(bbio, 1)) { 2890 SSLerror(s, ERR_R_BUF_LIB); 2891 return (0); 2892 } 2893 if (push) { 2894 if (s->wbio != bbio) 2895 s->wbio = BIO_push(bbio, s->wbio); 2896 } else { 2897 if (s->wbio == bbio) 2898 s->wbio = BIO_pop(bbio); 2899 } 2900 return (1); 2901} 2902 2903void 2904ssl_free_wbio_buffer(SSL *s) 2905{ 2906 if (s == NULL) 2907 return; 2908 2909 if (s->bbio == NULL) 2910 return; 2911 2912 if (s->bbio == s->wbio) { 2913 /* remove buffering */ 2914 s->wbio = BIO_pop(s->wbio); 2915 } 2916 BIO_free(s->bbio); 2917 s->bbio = NULL; 2918} 2919 2920void 2921SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2922{ 2923 ctx->internal->quiet_shutdown = mode; 2924} 2925 2926int 2927SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2928{ 2929 return (ctx->internal->quiet_shutdown); 2930} 2931 2932void 2933SSL_set_quiet_shutdown(SSL *s, int mode) 2934{ 2935 s->internal->quiet_shutdown = mode; 2936} 2937 2938int 2939SSL_get_quiet_shutdown(const SSL *s) 2940{ 2941 return (s->internal->quiet_shutdown); 2942} 2943 2944void 2945SSL_set_shutdown(SSL *s, int mode) 2946{ 2947 s->internal->shutdown = mode; 2948} 2949 2950int 2951SSL_get_shutdown(const SSL *s) 2952{ 2953 return (s->internal->shutdown); 2954} 2955 2956int 2957SSL_version(const SSL *s) 2958{ 2959 return (s->version); 2960} 2961 2962SSL_CTX * 2963SSL_get_SSL_CTX(const SSL *ssl) 2964{ 2965 return (ssl->ctx); 2966} 2967 2968SSL_CTX * 2969SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2970{ 2971 SSL_CERT *new_cert; 2972 2973 if (ctx == NULL) 2974 ctx = ssl->initial_ctx; 2975 if (ssl->ctx == ctx) 2976 return (ssl->ctx); 2977 2978 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2979 return NULL; 2980 ssl_cert_free(ssl->cert); 2981 ssl->cert = new_cert; 2982 2983 SSL_CTX_up_ref(ctx); 2984 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2985 ssl->ctx = ctx; 2986 2987 return (ssl->ctx); 2988} 2989 2990int 2991SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2992{ 2993 return (X509_STORE_set_default_paths(ctx->cert_store)); 2994} 2995 2996int 2997SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2998 const char *CApath) 2999{ 3000 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3001} 3002 3003int 3004SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3005{ 3006 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3007} 3008 3009void 3010SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3011{ 3012 ssl->internal->info_callback = cb; 3013} 3014 3015void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3016{ 3017 return (ssl->internal->info_callback); 3018} 3019 3020int 3021SSL_state(const SSL *ssl) 3022{ 3023 return (S3I(ssl)->hs.state); 3024} 3025 3026void 3027SSL_set_state(SSL *ssl, int state) 3028{ 3029 S3I(ssl)->hs.state = state; 3030} 3031 3032void 3033SSL_set_verify_result(SSL *ssl, long arg) 3034{ 3035 ssl->verify_result = arg; 3036} 3037 3038long 3039SSL_get_verify_result(const SSL *ssl) 3040{ 3041 return (ssl->verify_result); 3042} 3043 3044int 3045SSL_verify_client_post_handshake(SSL *ssl) 3046{ 3047 return 0; 3048} 3049 3050void 3051SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3052{ 3053 return; 3054} 3055 3056void 3057SSL_set_post_handshake_auth(SSL *ssl, int val) 3058{ 3059 return; 3060} 3061 3062int 3063SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3064 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3065{ 3066 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3067 new_func, dup_func, free_func)); 3068} 3069 3070int 3071SSL_set_ex_data(SSL *s, int idx, void *arg) 3072{ 3073 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3074} 3075 3076void * 3077SSL_get_ex_data(const SSL *s, int idx) 3078{ 3079 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3080} 3081 3082int 3083SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3084 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3085{ 3086 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3087 new_func, dup_func, free_func)); 3088} 3089 3090int 3091SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3092{ 3093 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3094} 3095 3096void * 3097SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3098{ 3099 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3100} 3101 3102int 3103ssl_ok(SSL *s) 3104{ 3105 return (1); 3106} 3107 3108X509_STORE * 3109SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3110{ 3111 return (ctx->cert_store); 3112} 3113 3114void 3115SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3116{ 3117 X509_STORE_free(ctx->cert_store); 3118 ctx->cert_store = store; 3119} 3120 3121X509 * 3122SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3123{ 3124 if (ctx->internal->cert == NULL) 3125 return NULL; 3126 3127 return ctx->internal->cert->key->x509; 3128} 3129 3130EVP_PKEY * 3131SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3132{ 3133 if (ctx->internal->cert == NULL) 3134 return NULL; 3135 3136 return ctx->internal->cert->key->privatekey; 3137} 3138 3139int 3140SSL_want(const SSL *s) 3141{ 3142 return (s->internal->rwstate); 3143} 3144 3145void 3146SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3147 int keylength)) 3148{ 3149 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3150} 3151 3152void 3153SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3154 int keylength)) 3155{ 3156 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3157} 3158 3159void 3160SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3161 int keylength)) 3162{ 3163 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3164} 3165 3166void 3167SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3168 int keylength)) 3169{ 3170 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3171} 3172 3173void 3174SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3175 int is_export, int keylength)) 3176{ 3177 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3178 (void (*)(void))ecdh); 3179} 3180 3181void 3182SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3183 int keylength)) 3184{ 3185 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3186} 3187 3188 3189void 3190SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3191 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3192{ 3193 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3194 (void (*)(void))cb); 3195} 3196 3197void 3198SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3199 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3200{ 3201 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3202} 3203 3204void 3205SSL_set_debug(SSL *s, int debug) 3206{ 3207 s->internal->debug = debug; 3208} 3209 3210int 3211SSL_cache_hit(SSL *s) 3212{ 3213 return (s->internal->hit); 3214} 3215 3216int 3217SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3218{ 3219 return ctx->internal->min_proto_version; 3220} 3221 3222int 3223SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3224{ 3225 return ssl_version_set_min(ctx->method, version, 3226 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3227 &ctx->internal->min_proto_version); 3228} 3229 3230int 3231SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3232{ 3233 return ctx->internal->max_proto_version; 3234} 3235 3236int 3237SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3238{ 3239 return ssl_version_set_max(ctx->method, version, 3240 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3241 &ctx->internal->max_proto_version); 3242} 3243 3244int 3245SSL_get_min_proto_version(SSL *ssl) 3246{ 3247 return ssl->internal->min_proto_version; 3248} 3249 3250int 3251SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3252{ 3253 return ssl_version_set_min(ssl->method, version, 3254 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3255 &ssl->internal->min_proto_version); 3256} 3257int 3258SSL_get_max_proto_version(SSL *ssl) 3259{ 3260 return ssl->internal->max_proto_version; 3261} 3262 3263int 3264SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3265{ 3266 return ssl_version_set_max(ssl->method, version, 3267 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3268 &ssl->internal->max_proto_version); 3269} 3270 3271const SSL_METHOD * 3272SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3273{ 3274 return ctx->method; 3275} 3276 3277static int 3278ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3279{ 3280 SSL_CIPHER const *a = a_; 3281 SSL_CIPHER const *b = b_; 3282 return ssl_cipher_id_cmp(a, b); 3283} 3284 3285SSL_CIPHER * 3286OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3287{ 3288 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3289 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3290} 3291