ssl_lib.c revision 1.258
1/* $OpenBSD: ssl_lib.c,v 1.258 2021/05/16 13:56:31 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 <stdio.h> 148 149#include "ssl_locl.h" 150 151#include <openssl/bn.h> 152#include <openssl/dh.h> 153#include <openssl/lhash.h> 154#include <openssl/objects.h> 155#include <openssl/ocsp.h> 156#include <openssl/opensslconf.h> 157#include <openssl/x509v3.h> 158 159#ifndef OPENSSL_NO_ENGINE 160#include <openssl/engine.h> 161#endif 162 163#include "bytestring.h" 164#include "dtls_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->internal->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->internal->ssl_free(s); 212 s->method = s->ctx->method; 213 if (!s->method->internal->ssl_new(s)) 214 return (0); 215 } else 216 s->method->internal->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 s->internal->min_tls_version = ctx->internal->min_tls_version; 258 s->internal->max_tls_version = ctx->internal->max_tls_version; 259 s->internal->min_proto_version = ctx->internal->min_proto_version; 260 s->internal->max_proto_version = ctx->internal->max_proto_version; 261 262 s->internal->options = ctx->internal->options; 263 s->internal->mode = ctx->internal->mode; 264 s->internal->max_cert_list = ctx->internal->max_cert_list; 265 266 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 267 goto err; 268 269 s->internal->read_ahead = ctx->internal->read_ahead; 270 s->internal->msg_callback = ctx->internal->msg_callback; 271 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 272 s->verify_mode = ctx->verify_mode; 273 s->sid_ctx_length = ctx->sid_ctx_length; 274 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 275 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 276 s->internal->verify_callback = ctx->internal->default_verify_callback; 277 s->internal->generate_session_id = ctx->internal->generate_session_id; 278 279 s->param = X509_VERIFY_PARAM_new(); 280 if (!s->param) 281 goto err; 282 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 283 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 284 s->max_send_fragment = ctx->internal->max_send_fragment; 285 286 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 287 s->ctx = ctx; 288 s->internal->tlsext_debug_cb = 0; 289 s->internal->tlsext_debug_arg = NULL; 290 s->internal->tlsext_ticket_expected = 0; 291 s->tlsext_status_type = -1; 292 s->internal->tlsext_status_expected = 0; 293 s->internal->tlsext_ocsp_ids = NULL; 294 s->internal->tlsext_ocsp_exts = NULL; 295 s->internal->tlsext_ocsp_resp = NULL; 296 s->internal->tlsext_ocsp_resp_len = 0; 297 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 298 s->initial_ctx = ctx; 299 300 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 301 s->internal->tlsext_ecpointformatlist = 302 calloc(ctx->internal->tlsext_ecpointformatlist_length, 303 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 304 if (s->internal->tlsext_ecpointformatlist == NULL) 305 goto err; 306 memcpy(s->internal->tlsext_ecpointformatlist, 307 ctx->internal->tlsext_ecpointformatlist, 308 ctx->internal->tlsext_ecpointformatlist_length * 309 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 310 s->internal->tlsext_ecpointformatlist_length = 311 ctx->internal->tlsext_ecpointformatlist_length; 312 } 313 if (ctx->internal->tlsext_supportedgroups != NULL) { 314 s->internal->tlsext_supportedgroups = 315 calloc(ctx->internal->tlsext_supportedgroups_length, 316 sizeof(ctx->internal->tlsext_supportedgroups[0])); 317 if (s->internal->tlsext_supportedgroups == NULL) 318 goto err; 319 memcpy(s->internal->tlsext_supportedgroups, 320 ctx->internal->tlsext_supportedgroups, 321 ctx->internal->tlsext_supportedgroups_length * 322 sizeof(ctx->internal->tlsext_supportedgroups[0])); 323 s->internal->tlsext_supportedgroups_length = 324 ctx->internal->tlsext_supportedgroups_length; 325 } 326 327 if (s->ctx->internal->alpn_client_proto_list != NULL) { 328 s->internal->alpn_client_proto_list = 329 malloc(s->ctx->internal->alpn_client_proto_list_len); 330 if (s->internal->alpn_client_proto_list == NULL) 331 goto err; 332 memcpy(s->internal->alpn_client_proto_list, 333 s->ctx->internal->alpn_client_proto_list, 334 s->ctx->internal->alpn_client_proto_list_len); 335 s->internal->alpn_client_proto_list_len = 336 s->ctx->internal->alpn_client_proto_list_len; 337 } 338 339 s->verify_result = X509_V_OK; 340 341 s->method = ctx->method; 342 343 if (!s->method->internal->ssl_new(s)) 344 goto err; 345 346 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 347 goto err; 348 349 s->references = 1; 350 s->server = ctx->method->internal->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->internal->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 618BIO * 619SSL_get_wbio(const SSL *s) 620{ 621 return (s->wbio); 622} 623 624int 625SSL_get_fd(const SSL *s) 626{ 627 return (SSL_get_rfd(s)); 628} 629 630int 631SSL_get_rfd(const SSL *s) 632{ 633 int ret = -1; 634 BIO *b, *r; 635 636 b = SSL_get_rbio(s); 637 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 638 if (r != NULL) 639 BIO_get_fd(r, &ret); 640 return (ret); 641} 642 643int 644SSL_get_wfd(const SSL *s) 645{ 646 int ret = -1; 647 BIO *b, *r; 648 649 b = SSL_get_wbio(s); 650 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 651 if (r != NULL) 652 BIO_get_fd(r, &ret); 653 return (ret); 654} 655 656int 657SSL_set_fd(SSL *s, int fd) 658{ 659 int ret = 0; 660 BIO *bio = NULL; 661 662 bio = BIO_new(BIO_s_socket()); 663 664 if (bio == NULL) { 665 SSLerror(s, ERR_R_BUF_LIB); 666 goto err; 667 } 668 BIO_set_fd(bio, fd, BIO_NOCLOSE); 669 SSL_set_bio(s, bio, bio); 670 ret = 1; 671err: 672 return (ret); 673} 674 675int 676SSL_set_wfd(SSL *s, int fd) 677{ 678 int ret = 0; 679 BIO *bio = NULL; 680 681 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 682 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 683 bio = BIO_new(BIO_s_socket()); 684 685 if (bio == NULL) { 686 SSLerror(s, ERR_R_BUF_LIB); 687 goto err; 688 } 689 BIO_set_fd(bio, fd, BIO_NOCLOSE); 690 SSL_set_bio(s, SSL_get_rbio(s), bio); 691 } else 692 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 693 ret = 1; 694err: 695 return (ret); 696} 697 698int 699SSL_set_rfd(SSL *s, int fd) 700{ 701 int ret = 0; 702 BIO *bio = NULL; 703 704 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 705 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 706 bio = BIO_new(BIO_s_socket()); 707 708 if (bio == NULL) { 709 SSLerror(s, ERR_R_BUF_LIB); 710 goto err; 711 } 712 BIO_set_fd(bio, fd, BIO_NOCLOSE); 713 SSL_set_bio(s, bio, SSL_get_wbio(s)); 714 } else 715 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 716 ret = 1; 717err: 718 return (ret); 719} 720 721 722/* return length of latest Finished message we sent, copy to 'buf' */ 723size_t 724SSL_get_finished(const SSL *s, void *buf, size_t count) 725{ 726 size_t ret; 727 728 ret = S3I(s)->hs.finished_len; 729 if (count > ret) 730 count = ret; 731 memcpy(buf, S3I(s)->hs.finished, count); 732 return (ret); 733} 734 735/* return length of latest Finished message we expected, copy to 'buf' */ 736size_t 737SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 738{ 739 size_t ret; 740 741 ret = S3I(s)->hs.peer_finished_len; 742 if (count > ret) 743 count = ret; 744 memcpy(buf, S3I(s)->hs.peer_finished, count); 745 return (ret); 746} 747 748 749int 750SSL_get_verify_mode(const SSL *s) 751{ 752 return (s->verify_mode); 753} 754 755int 756SSL_get_verify_depth(const SSL *s) 757{ 758 return (X509_VERIFY_PARAM_get_depth(s->param)); 759} 760 761int 762(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 763{ 764 return (s->internal->verify_callback); 765} 766 767int 768SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 769{ 770 return (ctx->verify_mode); 771} 772 773int 774SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 775{ 776 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 777} 778 779int 780(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 781{ 782 return (ctx->internal->default_verify_callback); 783} 784 785void 786SSL_set_verify(SSL *s, int mode, 787 int (*callback)(int ok, X509_STORE_CTX *ctx)) 788{ 789 s->verify_mode = mode; 790 if (callback != NULL) 791 s->internal->verify_callback = callback; 792} 793 794void 795SSL_set_verify_depth(SSL *s, int depth) 796{ 797 X509_VERIFY_PARAM_set_depth(s->param, depth); 798} 799 800void 801SSL_set_read_ahead(SSL *s, int yes) 802{ 803 s->internal->read_ahead = yes; 804} 805 806int 807SSL_get_read_ahead(const SSL *s) 808{ 809 return (s->internal->read_ahead); 810} 811 812int 813SSL_pending(const SSL *s) 814{ 815 return (s->method->internal->ssl_pending(s)); 816} 817 818X509 * 819SSL_get_peer_certificate(const SSL *s) 820{ 821 X509 *r; 822 823 if ((s == NULL) || (s->session == NULL)) 824 r = NULL; 825 else 826 r = s->session->peer; 827 828 if (r == NULL) 829 return (r); 830 831 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 832 833 return (r); 834} 835 836STACK_OF(X509) * 837SSL_get_peer_cert_chain(const SSL *s) 838{ 839 STACK_OF(X509) *r; 840 841 if ((s == NULL) || (s->session == NULL) || 842 (SSI(s)->sess_cert == NULL)) 843 r = NULL; 844 else 845 r = SSI(s)->sess_cert->cert_chain; 846 847 /* 848 * If we are a client, cert_chain includes the peer's own 849 * certificate; 850 * if we are a server, it does not. 851 */ 852 return (r); 853} 854 855/* 856 * Now in theory, since the calling process own 't' it should be safe to 857 * modify. We need to be able to read f without being hassled 858 */ 859int 860SSL_copy_session_id(SSL *t, const SSL *f) 861{ 862 CERT *tmp; 863 864 /* Do we need to do SSL locking? */ 865 if (!SSL_set_session(t, SSL_get_session(f))) 866 return 0; 867 868 /* What if we are set up for one protocol but want to talk another? */ 869 if (t->method != f->method) { 870 t->method->internal->ssl_free(t); 871 t->method = f->method; 872 if (!t->method->internal->ssl_new(t)) 873 return 0; 874 } 875 876 tmp = t->cert; 877 if (f->cert != NULL) { 878 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 879 t->cert = f->cert; 880 } else 881 t->cert = NULL; 882 ssl_cert_free(tmp); 883 884 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 885 return 0; 886 887 return 1; 888} 889 890/* Fix this so it checks all the valid key/cert options */ 891int 892SSL_CTX_check_private_key(const SSL_CTX *ctx) 893{ 894 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 895 (ctx->internal->cert->key->x509 == NULL)) { 896 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 897 return (0); 898 } 899 if (ctx->internal->cert->key->privatekey == NULL) { 900 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 901 return (0); 902 } 903 return (X509_check_private_key(ctx->internal->cert->key->x509, 904 ctx->internal->cert->key->privatekey)); 905} 906 907/* Fix this function so that it takes an optional type parameter */ 908int 909SSL_check_private_key(const SSL *ssl) 910{ 911 if (ssl == NULL) { 912 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 913 return (0); 914 } 915 if (ssl->cert == NULL) { 916 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 917 return (0); 918 } 919 if (ssl->cert->key->x509 == NULL) { 920 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 921 return (0); 922 } 923 if (ssl->cert->key->privatekey == NULL) { 924 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 925 return (0); 926 } 927 return (X509_check_private_key(ssl->cert->key->x509, 928 ssl->cert->key->privatekey)); 929} 930 931int 932SSL_accept(SSL *s) 933{ 934 if (s->internal->handshake_func == NULL) 935 SSL_set_accept_state(s); /* Not properly initialized yet */ 936 937 return (s->method->internal->ssl_accept(s)); 938} 939 940int 941SSL_connect(SSL *s) 942{ 943 if (s->internal->handshake_func == NULL) 944 SSL_set_connect_state(s); /* Not properly initialized yet */ 945 946 return (s->method->internal->ssl_connect(s)); 947} 948 949int 950SSL_is_dtls(const SSL *s) 951{ 952 return s->method->internal->dtls; 953} 954 955int 956SSL_is_server(const SSL *s) 957{ 958 return s->server; 959} 960 961static long 962ssl_get_default_timeout() 963{ 964 /* 965 * 2 hours, the 24 hours mentioned in the TLSv1 spec 966 * is way too long for http, the cache would over fill. 967 */ 968 return (2 * 60 * 60); 969} 970 971long 972SSL_get_default_timeout(const SSL *s) 973{ 974 return (ssl_get_default_timeout()); 975} 976 977int 978SSL_read(SSL *s, void *buf, int num) 979{ 980 if (s->internal->handshake_func == NULL) { 981 SSLerror(s, SSL_R_UNINITIALIZED); 982 return (-1); 983 } 984 985 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 986 s->internal->rwstate = SSL_NOTHING; 987 return (0); 988 } 989 return ssl3_read(s, buf, num); 990} 991 992int 993SSL_peek(SSL *s, void *buf, int num) 994{ 995 if (s->internal->handshake_func == NULL) { 996 SSLerror(s, SSL_R_UNINITIALIZED); 997 return (-1); 998 } 999 1000 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1001 return (0); 1002 } 1003 return ssl3_peek(s, buf, num); 1004} 1005 1006int 1007SSL_write(SSL *s, const void *buf, int num) 1008{ 1009 if (s->internal->handshake_func == NULL) { 1010 SSLerror(s, SSL_R_UNINITIALIZED); 1011 return (-1); 1012 } 1013 1014 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1015 s->internal->rwstate = SSL_NOTHING; 1016 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1017 return (-1); 1018 } 1019 return ssl3_write(s, buf, num); 1020} 1021 1022uint32_t 1023SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1024{ 1025 return 0; 1026} 1027 1028int 1029SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1030{ 1031 return 1; 1032} 1033 1034uint32_t 1035SSL_get_max_early_data(const SSL *s) 1036{ 1037 return 0; 1038} 1039 1040int 1041SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1042{ 1043 return 1; 1044} 1045 1046int 1047SSL_get_early_data_status(const SSL *s) 1048{ 1049 return SSL_EARLY_DATA_REJECTED; 1050} 1051 1052int 1053SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1054{ 1055 *readbytes = 0; 1056 1057 if (!s->server) { 1058 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1059 return SSL_READ_EARLY_DATA_ERROR; 1060 } 1061 1062 return SSL_READ_EARLY_DATA_FINISH; 1063} 1064 1065int 1066SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1067{ 1068 *written = 0; 1069 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1070 return 0; 1071} 1072 1073int 1074SSL_shutdown(SSL *s) 1075{ 1076 /* 1077 * Note that this function behaves differently from what one might 1078 * expect. Return values are 0 for no success (yet), 1079 * 1 for success; but calling it once is usually not enough, 1080 * even if blocking I/O is used (see ssl3_shutdown). 1081 */ 1082 1083 if (s->internal->handshake_func == NULL) { 1084 SSLerror(s, SSL_R_UNINITIALIZED); 1085 return (-1); 1086 } 1087 1088 if (s != NULL && !SSL_in_init(s)) 1089 return (s->method->internal->ssl_shutdown(s)); 1090 1091 return (1); 1092} 1093 1094int 1095SSL_renegotiate(SSL *s) 1096{ 1097 if (s->internal->renegotiate == 0) 1098 s->internal->renegotiate = 1; 1099 1100 s->internal->new_session = 1; 1101 1102 return (s->method->internal->ssl_renegotiate(s)); 1103} 1104 1105int 1106SSL_renegotiate_abbreviated(SSL *s) 1107{ 1108 if (s->internal->renegotiate == 0) 1109 s->internal->renegotiate = 1; 1110 1111 s->internal->new_session = 0; 1112 1113 return (s->method->internal->ssl_renegotiate(s)); 1114} 1115 1116int 1117SSL_renegotiate_pending(SSL *s) 1118{ 1119 /* 1120 * Becomes true when negotiation is requested; 1121 * false again once a handshake has finished. 1122 */ 1123 return (s->internal->renegotiate != 0); 1124} 1125 1126long 1127SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1128{ 1129 long l; 1130 1131 switch (cmd) { 1132 case SSL_CTRL_GET_READ_AHEAD: 1133 return (s->internal->read_ahead); 1134 case SSL_CTRL_SET_READ_AHEAD: 1135 l = s->internal->read_ahead; 1136 s->internal->read_ahead = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1140 s->internal->msg_callback_arg = parg; 1141 return (1); 1142 1143 case SSL_CTRL_OPTIONS: 1144 return (s->internal->options|=larg); 1145 case SSL_CTRL_CLEAR_OPTIONS: 1146 return (s->internal->options&=~larg); 1147 case SSL_CTRL_MODE: 1148 return (s->internal->mode|=larg); 1149 case SSL_CTRL_CLEAR_MODE: 1150 return (s->internal->mode &=~larg); 1151 case SSL_CTRL_GET_MAX_CERT_LIST: 1152 return (s->internal->max_cert_list); 1153 case SSL_CTRL_SET_MAX_CERT_LIST: 1154 l = s->internal->max_cert_list; 1155 s->internal->max_cert_list = larg; 1156 return (l); 1157 case SSL_CTRL_SET_MTU: 1158#ifndef OPENSSL_NO_DTLS1 1159 if (larg < (long)dtls1_min_mtu()) 1160 return (0); 1161#endif 1162 if (SSL_is_dtls(s)) { 1163 D1I(s)->mtu = larg; 1164 return (larg); 1165 } 1166 return (0); 1167 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1168 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1169 return (0); 1170 s->max_send_fragment = larg; 1171 return (1); 1172 case SSL_CTRL_GET_RI_SUPPORT: 1173 if (s->s3) 1174 return (S3I(s)->send_connection_binding); 1175 else return (0); 1176 default: 1177 if (SSL_is_dtls(s)) 1178 return dtls1_ctrl(s, cmd, larg, parg); 1179 return ssl3_ctrl(s, cmd, larg, parg); 1180 } 1181} 1182 1183long 1184SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1185{ 1186 switch (cmd) { 1187 case SSL_CTRL_SET_MSG_CALLBACK: 1188 s->internal->msg_callback = (void (*)(int write_p, int version, 1189 int content_type, const void *buf, size_t len, 1190 SSL *ssl, void *arg))(fp); 1191 return (1); 1192 1193 default: 1194 return (ssl3_callback_ctrl(s, cmd, fp)); 1195 } 1196} 1197 1198struct lhash_st_SSL_SESSION * 1199SSL_CTX_sessions(SSL_CTX *ctx) 1200{ 1201 return (ctx->internal->sessions); 1202} 1203 1204long 1205SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1206{ 1207 long l; 1208 1209 switch (cmd) { 1210 case SSL_CTRL_GET_READ_AHEAD: 1211 return (ctx->internal->read_ahead); 1212 case SSL_CTRL_SET_READ_AHEAD: 1213 l = ctx->internal->read_ahead; 1214 ctx->internal->read_ahead = larg; 1215 return (l); 1216 1217 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1218 ctx->internal->msg_callback_arg = parg; 1219 return (1); 1220 1221 case SSL_CTRL_GET_MAX_CERT_LIST: 1222 return (ctx->internal->max_cert_list); 1223 case SSL_CTRL_SET_MAX_CERT_LIST: 1224 l = ctx->internal->max_cert_list; 1225 ctx->internal->max_cert_list = larg; 1226 return (l); 1227 1228 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1229 l = ctx->internal->session_cache_size; 1230 ctx->internal->session_cache_size = larg; 1231 return (l); 1232 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1233 return (ctx->internal->session_cache_size); 1234 case SSL_CTRL_SET_SESS_CACHE_MODE: 1235 l = ctx->internal->session_cache_mode; 1236 ctx->internal->session_cache_mode = larg; 1237 return (l); 1238 case SSL_CTRL_GET_SESS_CACHE_MODE: 1239 return (ctx->internal->session_cache_mode); 1240 1241 case SSL_CTRL_SESS_NUMBER: 1242 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1243 case SSL_CTRL_SESS_CONNECT: 1244 return (ctx->internal->stats.sess_connect); 1245 case SSL_CTRL_SESS_CONNECT_GOOD: 1246 return (ctx->internal->stats.sess_connect_good); 1247 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1248 return (ctx->internal->stats.sess_connect_renegotiate); 1249 case SSL_CTRL_SESS_ACCEPT: 1250 return (ctx->internal->stats.sess_accept); 1251 case SSL_CTRL_SESS_ACCEPT_GOOD: 1252 return (ctx->internal->stats.sess_accept_good); 1253 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1254 return (ctx->internal->stats.sess_accept_renegotiate); 1255 case SSL_CTRL_SESS_HIT: 1256 return (ctx->internal->stats.sess_hit); 1257 case SSL_CTRL_SESS_CB_HIT: 1258 return (ctx->internal->stats.sess_cb_hit); 1259 case SSL_CTRL_SESS_MISSES: 1260 return (ctx->internal->stats.sess_miss); 1261 case SSL_CTRL_SESS_TIMEOUTS: 1262 return (ctx->internal->stats.sess_timeout); 1263 case SSL_CTRL_SESS_CACHE_FULL: 1264 return (ctx->internal->stats.sess_cache_full); 1265 case SSL_CTRL_OPTIONS: 1266 return (ctx->internal->options|=larg); 1267 case SSL_CTRL_CLEAR_OPTIONS: 1268 return (ctx->internal->options&=~larg); 1269 case SSL_CTRL_MODE: 1270 return (ctx->internal->mode|=larg); 1271 case SSL_CTRL_CLEAR_MODE: 1272 return (ctx->internal->mode&=~larg); 1273 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1274 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1275 return (0); 1276 ctx->internal->max_send_fragment = larg; 1277 return (1); 1278 default: 1279 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1280 } 1281} 1282 1283long 1284SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1285{ 1286 switch (cmd) { 1287 case SSL_CTRL_SET_MSG_CALLBACK: 1288 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1289 int content_type, const void *buf, size_t len, SSL *ssl, 1290 void *arg))(fp); 1291 return (1); 1292 1293 default: 1294 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1295 } 1296} 1297 1298int 1299ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1300{ 1301 long l; 1302 1303 l = a->id - b->id; 1304 if (l == 0L) 1305 return (0); 1306 else 1307 return ((l > 0) ? 1:-1); 1308} 1309 1310STACK_OF(SSL_CIPHER) * 1311SSL_get_ciphers(const SSL *s) 1312{ 1313 if (s == NULL) 1314 return (NULL); 1315 if (s->cipher_list != NULL) 1316 return (s->cipher_list); 1317 1318 return (s->ctx->cipher_list); 1319} 1320 1321STACK_OF(SSL_CIPHER) * 1322SSL_get_client_ciphers(const SSL *s) 1323{ 1324 if (s == NULL || s->session == NULL || !s->server) 1325 return NULL; 1326 return s->session->ciphers; 1327} 1328 1329STACK_OF(SSL_CIPHER) * 1330SSL_get1_supported_ciphers(SSL *s) 1331{ 1332 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1333 const SSL_CIPHER *cipher; 1334 uint16_t min_vers, max_vers; 1335 int i; 1336 1337 if (s == NULL) 1338 return NULL; 1339 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1340 return NULL; 1341 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1342 return NULL; 1343 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1344 return NULL; 1345 1346 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1347 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1348 goto err; 1349 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1350 max_vers)) 1351 continue; 1352 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1353 goto err; 1354 } 1355 1356 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1357 return supported_ciphers; 1358 1359 err: 1360 sk_SSL_CIPHER_free(supported_ciphers); 1361 return NULL; 1362} 1363 1364/* See if we have any ECC cipher suites. */ 1365int 1366ssl_has_ecc_ciphers(SSL *s) 1367{ 1368 STACK_OF(SSL_CIPHER) *ciphers; 1369 unsigned long alg_k, alg_a; 1370 SSL_CIPHER *cipher; 1371 int i; 1372 1373 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1374 return 0; 1375 1376 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1377 cipher = sk_SSL_CIPHER_value(ciphers, i); 1378 1379 alg_k = cipher->algorithm_mkey; 1380 alg_a = cipher->algorithm_auth; 1381 1382 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1383 return 1; 1384 } 1385 1386 return 0; 1387} 1388 1389/* The old interface to get the same thing as SSL_get_ciphers(). */ 1390const char * 1391SSL_get_cipher_list(const SSL *s, int n) 1392{ 1393 STACK_OF(SSL_CIPHER) *ciphers; 1394 const SSL_CIPHER *cipher; 1395 1396 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1397 return (NULL); 1398 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1399 return (NULL); 1400 1401 return (cipher->name); 1402} 1403 1404STACK_OF(SSL_CIPHER) * 1405SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1406{ 1407 if (ctx == NULL) 1408 return NULL; 1409 return ctx->cipher_list; 1410} 1411 1412/* Specify the ciphers to be used by default by the SSL_CTX. */ 1413int 1414SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1415{ 1416 STACK_OF(SSL_CIPHER) *ciphers; 1417 1418 /* 1419 * ssl_create_cipher_list may return an empty stack if it was unable to 1420 * find a cipher matching the given rule string (for example if the 1421 * rule string specifies a cipher which has been disabled). This is not 1422 * an error as far as ssl_create_cipher_list is concerned, and hence 1423 * ctx->cipher_list has been updated. 1424 */ 1425 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1426 ctx->internal->cipher_list_tls13, str); 1427 if (ciphers == NULL) { 1428 return (0); 1429 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1430 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1431 return (0); 1432 } 1433 return (1); 1434} 1435 1436int 1437SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1438{ 1439 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1440 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1441 return 0; 1442 } 1443 if (!ssl_merge_cipherlists(ctx->cipher_list, 1444 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1445 return 0; 1446 1447 return 1; 1448} 1449 1450/* Specify the ciphers to be used by the SSL. */ 1451int 1452SSL_set_cipher_list(SSL *s, const char *str) 1453{ 1454 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1455 1456 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1457 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1458 1459 /* See comment in SSL_CTX_set_cipher_list. */ 1460 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1461 ciphers_tls13, str); 1462 if (ciphers == NULL) { 1463 return (0); 1464 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1465 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1466 return (0); 1467 } 1468 return (1); 1469} 1470 1471int 1472SSL_set_ciphersuites(SSL *s, const char *str) 1473{ 1474 STACK_OF(SSL_CIPHER) *ciphers; 1475 1476 if ((ciphers = s->cipher_list) == NULL) 1477 ciphers = s->ctx->cipher_list; 1478 1479 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1480 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1481 return (0); 1482 } 1483 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1484 &s->cipher_list)) 1485 return 0; 1486 1487 return 1; 1488} 1489 1490char * 1491SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1492{ 1493 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1494 const SSL_CIPHER *cipher; 1495 size_t curlen = 0; 1496 char *end; 1497 int i; 1498 1499 if (!s->server || s->session == NULL || len < 2) 1500 return NULL; 1501 1502 if ((client_ciphers = s->session->ciphers) == NULL) 1503 return NULL; 1504 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1505 return NULL; 1506 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1507 sk_SSL_CIPHER_num(server_ciphers) == 0) 1508 return NULL; 1509 1510 buf[0] = '\0'; 1511 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1512 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1513 1514 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1515 continue; 1516 1517 end = buf + curlen; 1518 if (strlcat(buf, cipher->name, len) >= len || 1519 (curlen = strlcat(buf, ":", len)) >= len) { 1520 /* remove truncated cipher from list */ 1521 *end = '\0'; 1522 break; 1523 } 1524 } 1525 /* remove trailing colon */ 1526 if ((end = strrchr(buf, ':')) != NULL) 1527 *end = '\0'; 1528 return buf; 1529} 1530 1531/* 1532 * Return a servername extension value if provided in Client Hello, or NULL. 1533 * So far, only host_name types are defined (RFC 3546). 1534 */ 1535const char * 1536SSL_get_servername(const SSL *s, const int type) 1537{ 1538 if (type != TLSEXT_NAMETYPE_host_name) 1539 return (NULL); 1540 1541 return (s->session && !s->tlsext_hostname ? 1542 s->session->tlsext_hostname : 1543 s->tlsext_hostname); 1544} 1545 1546int 1547SSL_get_servername_type(const SSL *s) 1548{ 1549 if (s->session && 1550 (!s->tlsext_hostname ? 1551 s->session->tlsext_hostname : s->tlsext_hostname)) 1552 return (TLSEXT_NAMETYPE_host_name); 1553 return (-1); 1554} 1555 1556/* 1557 * SSL_select_next_proto implements standard protocol selection. It is 1558 * expected that this function is called from the callback set by 1559 * SSL_CTX_set_alpn_select_cb. 1560 * 1561 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1562 * strings. The length byte itself is not included in the length. A byte 1563 * string of length 0 is invalid. No byte string may be truncated. 1564 * 1565 * It returns either: 1566 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1567 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1568 */ 1569int 1570SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1571 const unsigned char *server, unsigned int server_len, 1572 const unsigned char *client, unsigned int client_len) 1573{ 1574 unsigned int i, j; 1575 const unsigned char *result; 1576 int status = OPENSSL_NPN_UNSUPPORTED; 1577 1578 /* 1579 * For each protocol in server preference order, 1580 * see if we support it. 1581 */ 1582 for (i = 0; i < server_len; ) { 1583 for (j = 0; j < client_len; ) { 1584 if (server[i] == client[j] && 1585 memcmp(&server[i + 1], 1586 &client[j + 1], server[i]) == 0) { 1587 /* We found a match */ 1588 result = &server[i]; 1589 status = OPENSSL_NPN_NEGOTIATED; 1590 goto found; 1591 } 1592 j += client[j]; 1593 j++; 1594 } 1595 i += server[i]; 1596 i++; 1597 } 1598 1599 /* There's no overlap between our protocols and the server's list. */ 1600 result = client; 1601 status = OPENSSL_NPN_NO_OVERLAP; 1602 1603 found: 1604 *out = (unsigned char *) result + 1; 1605 *outlen = result[0]; 1606 return (status); 1607} 1608 1609/* SSL_get0_next_proto_negotiated is deprecated. */ 1610void 1611SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1612 unsigned int *len) 1613{ 1614 *data = NULL; 1615 *len = 0; 1616} 1617 1618/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1619void 1620SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1621 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1622{ 1623} 1624 1625/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1626void 1627SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1628 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1629 unsigned int inlen, void *arg), void *arg) 1630{ 1631} 1632 1633/* 1634 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1635 * protocols, which must be in wire-format (i.e. a series of non-empty, 1636 * 8-bit length-prefixed strings). Returns 0 on success. 1637 */ 1638int 1639SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1640 unsigned int protos_len) 1641{ 1642 int failed = 1; 1643 1644 if (protos == NULL || protos_len == 0) 1645 goto err; 1646 1647 free(ctx->internal->alpn_client_proto_list); 1648 ctx->internal->alpn_client_proto_list = NULL; 1649 ctx->internal->alpn_client_proto_list_len = 0; 1650 1651 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1652 == NULL) 1653 goto err; 1654 ctx->internal->alpn_client_proto_list_len = protos_len; 1655 1656 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1657 1658 failed = 0; 1659 1660 err: 1661 /* NOTE: Return values are the reverse of what you expect. */ 1662 return (failed); 1663} 1664 1665/* 1666 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1667 * protocols, which must be in wire-format (i.e. a series of non-empty, 1668 * 8-bit length-prefixed strings). Returns 0 on success. 1669 */ 1670int 1671SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1672 unsigned int protos_len) 1673{ 1674 int failed = 1; 1675 1676 if (protos == NULL || protos_len == 0) 1677 goto err; 1678 1679 free(ssl->internal->alpn_client_proto_list); 1680 ssl->internal->alpn_client_proto_list = NULL; 1681 ssl->internal->alpn_client_proto_list_len = 0; 1682 1683 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1684 == NULL) 1685 goto err; 1686 ssl->internal->alpn_client_proto_list_len = protos_len; 1687 1688 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1689 1690 failed = 0; 1691 1692 err: 1693 /* NOTE: Return values are the reverse of what you expect. */ 1694 return (failed); 1695} 1696 1697/* 1698 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1699 * ClientHello processing in order to select an ALPN protocol from the 1700 * client's list of offered protocols. 1701 */ 1702void 1703SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1704 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1705 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1706{ 1707 ctx->internal->alpn_select_cb = cb; 1708 ctx->internal->alpn_select_cb_arg = arg; 1709} 1710 1711/* 1712 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1713 * it sets data to point to len bytes of protocol name (not including the 1714 * leading length-prefix byte). If the server didn't respond with* a negotiated 1715 * protocol then len will be zero. 1716 */ 1717void 1718SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1719 unsigned int *len) 1720{ 1721 *data = ssl->s3->internal->alpn_selected; 1722 *len = ssl->s3->internal->alpn_selected_len; 1723} 1724 1725int 1726SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1727 const char *label, size_t llen, const unsigned char *p, size_t plen, 1728 int use_context) 1729{ 1730 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1731 if (!use_context) { 1732 p = NULL; 1733 plen = 0; 1734 } 1735 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1736 out, olen); 1737 } 1738 1739 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1740 use_context)); 1741} 1742 1743static unsigned long 1744ssl_session_hash(const SSL_SESSION *a) 1745{ 1746 unsigned long l; 1747 1748 l = (unsigned long) 1749 ((unsigned int) a->session_id[0] )| 1750 ((unsigned int) a->session_id[1]<< 8L)| 1751 ((unsigned long)a->session_id[2]<<16L)| 1752 ((unsigned long)a->session_id[3]<<24L); 1753 return (l); 1754} 1755 1756/* 1757 * NB: If this function (or indeed the hash function which uses a sort of 1758 * coarser function than this one) is changed, ensure 1759 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1760 * able to construct an SSL_SESSION that will collide with any existing session 1761 * with a matching session ID. 1762 */ 1763static int 1764ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1765{ 1766 if (a->ssl_version != b->ssl_version) 1767 return (1); 1768 if (a->session_id_length != b->session_id_length) 1769 return (1); 1770 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1771 return (1); 1772 return (0); 1773} 1774 1775/* 1776 * These wrapper functions should remain rather than redeclaring 1777 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1778 * variable. The reason is that the functions aren't static, they're exposed via 1779 * ssl.h. 1780 */ 1781static unsigned long 1782ssl_session_LHASH_HASH(const void *arg) 1783{ 1784 const SSL_SESSION *a = arg; 1785 1786 return ssl_session_hash(a); 1787} 1788 1789static int 1790ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1791{ 1792 const SSL_SESSION *a = arg1; 1793 const SSL_SESSION *b = arg2; 1794 1795 return ssl_session_cmp(a, b); 1796} 1797 1798SSL_CTX * 1799SSL_CTX_new(const SSL_METHOD *meth) 1800{ 1801 SSL_CTX *ret; 1802 1803 if (!OPENSSL_init_ssl(0, NULL)) { 1804 SSLerrorx(SSL_R_LIBRARY_BUG); 1805 return (NULL); 1806 } 1807 1808 if (meth == NULL) { 1809 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1810 return (NULL); 1811 } 1812 1813 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1814 SSLerrorx(ERR_R_MALLOC_FAILURE); 1815 return (NULL); 1816 } 1817 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1818 free(ret); 1819 SSLerrorx(ERR_R_MALLOC_FAILURE); 1820 return (NULL); 1821 } 1822 1823 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1824 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1825 goto err; 1826 } 1827 1828 ret->method = meth; 1829 ret->internal->min_tls_version = meth->internal->min_tls_version; 1830 ret->internal->max_tls_version = meth->internal->max_tls_version; 1831 ret->internal->min_proto_version = 0; 1832 ret->internal->max_proto_version = 0; 1833 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1834 1835 ret->cert_store = NULL; 1836 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1837 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1838 ret->internal->session_cache_head = NULL; 1839 ret->internal->session_cache_tail = NULL; 1840 1841 /* We take the system default */ 1842 ret->session_timeout = ssl_get_default_timeout(); 1843 1844 ret->internal->new_session_cb = 0; 1845 ret->internal->remove_session_cb = 0; 1846 ret->internal->get_session_cb = 0; 1847 ret->internal->generate_session_id = 0; 1848 1849 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1850 1851 ret->references = 1; 1852 ret->internal->quiet_shutdown = 0; 1853 1854 ret->internal->info_callback = NULL; 1855 1856 ret->internal->app_verify_callback = 0; 1857 ret->internal->app_verify_arg = NULL; 1858 1859 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1860 ret->internal->read_ahead = 0; 1861 ret->internal->msg_callback = 0; 1862 ret->internal->msg_callback_arg = NULL; 1863 ret->verify_mode = SSL_VERIFY_NONE; 1864 ret->sid_ctx_length = 0; 1865 ret->internal->default_verify_callback = NULL; 1866 1867 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1868 goto err; 1869 1870 ret->default_passwd_callback = 0; 1871 ret->default_passwd_callback_userdata = NULL; 1872 ret->internal->client_cert_cb = 0; 1873 ret->internal->app_gen_cookie_cb = 0; 1874 ret->internal->app_verify_cookie_cb = 0; 1875 1876 ret->internal->sessions = lh_SSL_SESSION_new(); 1877 if (ret->internal->sessions == NULL) 1878 goto err; 1879 ret->cert_store = X509_STORE_new(); 1880 if (ret->cert_store == NULL) 1881 goto err; 1882 1883 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1884 NULL, SSL_DEFAULT_CIPHER_LIST); 1885 if (ret->cipher_list == NULL || 1886 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1887 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1888 goto err2; 1889 } 1890 1891 ret->param = X509_VERIFY_PARAM_new(); 1892 if (!ret->param) 1893 goto err; 1894 1895 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1896 goto err; 1897 1898 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1899 1900 ret->extra_certs = NULL; 1901 1902 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1903 1904 ret->internal->tlsext_servername_callback = 0; 1905 ret->internal->tlsext_servername_arg = NULL; 1906 1907 /* Setup RFC4507 ticket keys */ 1908 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1909 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1910 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1911 1912 ret->internal->tlsext_status_cb = 0; 1913 ret->internal->tlsext_status_arg = NULL; 1914 1915#ifndef OPENSSL_NO_ENGINE 1916 ret->internal->client_cert_engine = NULL; 1917#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1918#define eng_strx(x) #x 1919#define eng_str(x) eng_strx(x) 1920 /* Use specific client engine automatically... ignore errors */ 1921 { 1922 ENGINE *eng; 1923 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1924 if (!eng) { 1925 ERR_clear_error(); 1926 ENGINE_load_builtin_engines(); 1927 eng = ENGINE_by_id(eng_str( 1928 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1929 } 1930 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1931 ERR_clear_error(); 1932 } 1933#endif 1934#endif 1935 /* 1936 * Default is to connect to non-RI servers. When RI is more widely 1937 * deployed might change this. 1938 */ 1939 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1940 1941 return (ret); 1942 err: 1943 SSLerrorx(ERR_R_MALLOC_FAILURE); 1944 err2: 1945 SSL_CTX_free(ret); 1946 return (NULL); 1947} 1948 1949void 1950SSL_CTX_free(SSL_CTX *ctx) 1951{ 1952 int i; 1953 1954 if (ctx == NULL) 1955 return; 1956 1957 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1958 if (i > 0) 1959 return; 1960 1961 X509_VERIFY_PARAM_free(ctx->param); 1962 1963 /* 1964 * Free internal session cache. However: the remove_cb() may reference 1965 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1966 * after the sessions were flushed. 1967 * As the ex_data handling routines might also touch the session cache, 1968 * the most secure solution seems to be: empty (flush) the cache, then 1969 * free ex_data, then finally free the cache. 1970 * (See ticket [openssl.org #212].) 1971 */ 1972 if (ctx->internal->sessions != NULL) 1973 SSL_CTX_flush_sessions(ctx, 0); 1974 1975 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1976 1977 lh_SSL_SESSION_free(ctx->internal->sessions); 1978 1979 X509_STORE_free(ctx->cert_store); 1980 sk_SSL_CIPHER_free(ctx->cipher_list); 1981 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 1982 ssl_cert_free(ctx->internal->cert); 1983 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1984 sk_X509_pop_free(ctx->extra_certs, X509_free); 1985 1986#ifndef OPENSSL_NO_SRTP 1987 if (ctx->internal->srtp_profiles) 1988 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1989#endif 1990 1991#ifndef OPENSSL_NO_ENGINE 1992 ENGINE_finish(ctx->internal->client_cert_engine); 1993#endif 1994 1995 free(ctx->internal->tlsext_ecpointformatlist); 1996 free(ctx->internal->tlsext_supportedgroups); 1997 1998 free(ctx->internal->alpn_client_proto_list); 1999 2000 free(ctx->internal); 2001 free(ctx); 2002} 2003 2004int 2005SSL_CTX_up_ref(SSL_CTX *ctx) 2006{ 2007 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2008 return ((refs > 1) ? 1 : 0); 2009} 2010 2011pem_password_cb * 2012SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2013{ 2014 return (ctx->default_passwd_callback); 2015} 2016 2017void 2018SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2019{ 2020 ctx->default_passwd_callback = cb; 2021} 2022 2023void * 2024SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2025{ 2026 return ctx->default_passwd_callback_userdata; 2027} 2028 2029void 2030SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2031{ 2032 ctx->default_passwd_callback_userdata = u; 2033} 2034 2035void 2036SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2037 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2038{ 2039 ctx->internal->app_verify_callback = cb; 2040 ctx->internal->app_verify_arg = arg; 2041} 2042 2043void 2044SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2045{ 2046 ctx->verify_mode = mode; 2047 ctx->internal->default_verify_callback = cb; 2048} 2049 2050void 2051SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2052{ 2053 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2054} 2055 2056static int 2057ssl_cert_can_sign(X509 *x) 2058{ 2059 /* This call populates extension flags (ex_flags). */ 2060 X509_check_purpose(x, -1, 0); 2061 2062 /* Key usage, if present, must allow signing. */ 2063 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2064 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2065} 2066 2067void 2068ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2069{ 2070 unsigned long mask_a, mask_k; 2071 CERT_PKEY *cpk; 2072 2073 if (c == NULL) 2074 return; 2075 2076 mask_a = SSL_aNULL | SSL_aTLS1_3; 2077 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2078 2079 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2080 mask_k |= SSL_kDHE; 2081 2082 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2083 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2084 if (ssl_cert_can_sign(cpk->x509)) 2085 mask_a |= SSL_aECDSA; 2086 } 2087 2088 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2089 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2090 mask_k |= SSL_kGOST; 2091 mask_a |= SSL_aGOST01; 2092 } 2093 2094 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2095 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2096 mask_a |= SSL_aRSA; 2097 mask_k |= SSL_kRSA; 2098 } 2099 2100 c->mask_k = mask_k; 2101 c->mask_a = mask_a; 2102 c->valid = 1; 2103} 2104 2105/* See if this handshake is using an ECC cipher suite. */ 2106int 2107ssl_using_ecc_cipher(SSL *s) 2108{ 2109 unsigned long alg_a, alg_k; 2110 2111 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2112 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2113 2114 return SSI(s)->tlsext_ecpointformatlist != NULL && 2115 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2116 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2117} 2118 2119int 2120ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2121{ 2122 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2123 unsigned long alg_a; 2124 2125 alg_a = cs->algorithm_auth; 2126 2127 if (alg_a & SSL_aECDSA) { 2128 /* This call populates extension flags (ex_flags). */ 2129 X509_check_purpose(x, -1, 0); 2130 2131 /* Key usage, if present, must allow signing. */ 2132 if ((x->ex_flags & EXFLAG_KUSAGE) && 2133 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2134 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2135 return (0); 2136 } 2137 } 2138 2139 return (1); 2140} 2141 2142CERT_PKEY * 2143ssl_get_server_send_pkey(const SSL *s) 2144{ 2145 unsigned long alg_a; 2146 CERT *c; 2147 int i; 2148 2149 c = s->cert; 2150 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2151 2152 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2153 2154 if (alg_a & SSL_aECDSA) { 2155 i = SSL_PKEY_ECC; 2156 } else if (alg_a & SSL_aRSA) { 2157 i = SSL_PKEY_RSA; 2158 } else if (alg_a & SSL_aGOST01) { 2159 i = SSL_PKEY_GOST01; 2160 } else { /* if (alg_a & SSL_aNULL) */ 2161 SSLerror(s, ERR_R_INTERNAL_ERROR); 2162 return (NULL); 2163 } 2164 2165 return (c->pkeys + i); 2166} 2167 2168EVP_PKEY * 2169ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2170 const struct ssl_sigalg **sap) 2171{ 2172 const struct ssl_sigalg *sigalg = NULL; 2173 EVP_PKEY *pkey = NULL; 2174 unsigned long alg_a; 2175 CERT *c; 2176 int idx = -1; 2177 2178 alg_a = cipher->algorithm_auth; 2179 c = s->cert; 2180 2181 if (alg_a & SSL_aRSA) { 2182 idx = SSL_PKEY_RSA; 2183 } else if ((alg_a & SSL_aECDSA) && 2184 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2185 idx = SSL_PKEY_ECC; 2186 if (idx == -1) { 2187 SSLerror(s, ERR_R_INTERNAL_ERROR); 2188 return (NULL); 2189 } 2190 2191 pkey = c->pkeys[idx].privatekey; 2192 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2193 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2194 return (NULL); 2195 } 2196 *pmd = sigalg->md(); 2197 *sap = sigalg; 2198 2199 return (pkey); 2200} 2201 2202DH * 2203ssl_get_auto_dh(SSL *s) 2204{ 2205 CERT_PKEY *cpk; 2206 int keylen; 2207 DH *dhp; 2208 2209 if (s->cert->dh_tmp_auto == 2) { 2210 keylen = 1024; 2211 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2212 keylen = 1024; 2213 if (S3I(s)->hs.cipher->strength_bits == 256) 2214 keylen = 3072; 2215 } else { 2216 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2217 return (NULL); 2218 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2219 return (NULL); 2220 keylen = EVP_PKEY_bits(cpk->privatekey); 2221 } 2222 2223 if ((dhp = DH_new()) == NULL) 2224 return (NULL); 2225 2226 dhp->g = BN_new(); 2227 if (dhp->g != NULL) 2228 BN_set_word(dhp->g, 2); 2229 2230 if (keylen >= 8192) 2231 dhp->p = get_rfc3526_prime_8192(NULL); 2232 else if (keylen >= 4096) 2233 dhp->p = get_rfc3526_prime_4096(NULL); 2234 else if (keylen >= 3072) 2235 dhp->p = get_rfc3526_prime_3072(NULL); 2236 else if (keylen >= 2048) 2237 dhp->p = get_rfc3526_prime_2048(NULL); 2238 else if (keylen >= 1536) 2239 dhp->p = get_rfc3526_prime_1536(NULL); 2240 else 2241 dhp->p = get_rfc2409_prime_1024(NULL); 2242 2243 if (dhp->p == NULL || dhp->g == NULL) { 2244 DH_free(dhp); 2245 return (NULL); 2246 } 2247 return (dhp); 2248} 2249 2250void 2251ssl_update_cache(SSL *s, int mode) 2252{ 2253 int i; 2254 2255 /* 2256 * If the session_id_length is 0, we are not supposed to cache it, 2257 * and it would be rather hard to do anyway :-) 2258 */ 2259 if (s->session->session_id_length == 0) 2260 return; 2261 2262 i = s->session_ctx->internal->session_cache_mode; 2263 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2264 || SSL_CTX_add_session(s->session_ctx, s->session)) 2265 && (s->session_ctx->internal->new_session_cb != NULL)) { 2266 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2267 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2268 SSL_SESSION_free(s->session); 2269 } 2270 2271 /* auto flush every 255 connections */ 2272 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2273 ((i & mode) == mode)) { 2274 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2275 s->session_ctx->internal->stats.sess_connect_good : 2276 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2277 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2278 } 2279 } 2280} 2281 2282const SSL_METHOD * 2283SSL_get_ssl_method(SSL *s) 2284{ 2285 return (s->method); 2286} 2287 2288int 2289SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2290{ 2291 int (*handshake_func)(SSL *) = NULL; 2292 int ret = 1; 2293 2294 if (s->method == method) 2295 return (ret); 2296 2297 if (s->internal->handshake_func == s->method->internal->ssl_connect) 2298 handshake_func = method->internal->ssl_connect; 2299 else if (s->internal->handshake_func == s->method->internal->ssl_accept) 2300 handshake_func = method->internal->ssl_accept; 2301 2302 if (s->method->internal->version == method->internal->version) { 2303 s->method = method; 2304 } else { 2305 s->method->internal->ssl_free(s); 2306 s->method = method; 2307 ret = s->method->internal->ssl_new(s); 2308 } 2309 s->internal->handshake_func = handshake_func; 2310 2311 return (ret); 2312} 2313 2314int 2315SSL_get_error(const SSL *s, int i) 2316{ 2317 int reason; 2318 unsigned long l; 2319 BIO *bio; 2320 2321 if (i > 0) 2322 return (SSL_ERROR_NONE); 2323 2324 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2325 * etc, where we do encode the error */ 2326 if ((l = ERR_peek_error()) != 0) { 2327 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2328 return (SSL_ERROR_SYSCALL); 2329 else 2330 return (SSL_ERROR_SSL); 2331 } 2332 2333 if ((i < 0) && SSL_want_read(s)) { 2334 bio = SSL_get_rbio(s); 2335 if (BIO_should_read(bio)) { 2336 return (SSL_ERROR_WANT_READ); 2337 } else if (BIO_should_write(bio)) { 2338 /* 2339 * This one doesn't make too much sense... We never 2340 * try to write to the rbio, and an application 2341 * program where rbio and wbio are separate couldn't 2342 * even know what it should wait for. However if we 2343 * ever set s->internal->rwstate incorrectly (so that we have 2344 * SSL_want_read(s) instead of SSL_want_write(s)) 2345 * and rbio and wbio *are* the same, this test works 2346 * around that bug; so it might be safer to keep it. 2347 */ 2348 return (SSL_ERROR_WANT_WRITE); 2349 } else if (BIO_should_io_special(bio)) { 2350 reason = BIO_get_retry_reason(bio); 2351 if (reason == BIO_RR_CONNECT) 2352 return (SSL_ERROR_WANT_CONNECT); 2353 else if (reason == BIO_RR_ACCEPT) 2354 return (SSL_ERROR_WANT_ACCEPT); 2355 else 2356 return (SSL_ERROR_SYSCALL); /* unknown */ 2357 } 2358 } 2359 2360 if ((i < 0) && SSL_want_write(s)) { 2361 bio = SSL_get_wbio(s); 2362 if (BIO_should_write(bio)) { 2363 return (SSL_ERROR_WANT_WRITE); 2364 } else if (BIO_should_read(bio)) { 2365 /* 2366 * See above (SSL_want_read(s) with 2367 * BIO_should_write(bio)) 2368 */ 2369 return (SSL_ERROR_WANT_READ); 2370 } else if (BIO_should_io_special(bio)) { 2371 reason = BIO_get_retry_reason(bio); 2372 if (reason == BIO_RR_CONNECT) 2373 return (SSL_ERROR_WANT_CONNECT); 2374 else if (reason == BIO_RR_ACCEPT) 2375 return (SSL_ERROR_WANT_ACCEPT); 2376 else 2377 return (SSL_ERROR_SYSCALL); 2378 } 2379 } 2380 if ((i < 0) && SSL_want_x509_lookup(s)) { 2381 return (SSL_ERROR_WANT_X509_LOOKUP); 2382 } 2383 2384 if (i == 0) { 2385 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2386 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2387 return (SSL_ERROR_ZERO_RETURN); 2388 } 2389 return (SSL_ERROR_SYSCALL); 2390} 2391 2392int 2393SSL_do_handshake(SSL *s) 2394{ 2395 int ret = 1; 2396 2397 if (s->internal->handshake_func == NULL) { 2398 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2399 return (-1); 2400 } 2401 2402 s->method->internal->ssl_renegotiate_check(s); 2403 2404 if (SSL_in_init(s) || SSL_in_before(s)) { 2405 ret = s->internal->handshake_func(s); 2406 } 2407 return (ret); 2408} 2409 2410/* 2411 * For the next 2 functions, SSL_clear() sets shutdown and so 2412 * one of these calls will reset it 2413 */ 2414void 2415SSL_set_accept_state(SSL *s) 2416{ 2417 s->server = 1; 2418 s->internal->shutdown = 0; 2419 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2420 s->internal->handshake_func = s->method->internal->ssl_accept; 2421 ssl_clear_cipher_state(s); 2422} 2423 2424void 2425SSL_set_connect_state(SSL *s) 2426{ 2427 s->server = 0; 2428 s->internal->shutdown = 0; 2429 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2430 s->internal->handshake_func = s->method->internal->ssl_connect; 2431 ssl_clear_cipher_state(s); 2432} 2433 2434int 2435ssl_undefined_function(SSL *s) 2436{ 2437 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2438 return (0); 2439} 2440 2441int 2442ssl_undefined_void_function(void) 2443{ 2444 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2445 return (0); 2446} 2447 2448int 2449ssl_undefined_const_function(const SSL *s) 2450{ 2451 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2452 return (0); 2453} 2454 2455const char * 2456ssl_version_string(int ver) 2457{ 2458 switch (ver) { 2459 case TLS1_VERSION: 2460 return (SSL_TXT_TLSV1); 2461 case TLS1_1_VERSION: 2462 return (SSL_TXT_TLSV1_1); 2463 case TLS1_2_VERSION: 2464 return (SSL_TXT_TLSV1_2); 2465 case TLS1_3_VERSION: 2466 return (SSL_TXT_TLSV1_3); 2467 case DTLS1_VERSION: 2468 return (SSL_TXT_DTLS1); 2469 case DTLS1_2_VERSION: 2470 return (SSL_TXT_DTLS1_2); 2471 default: 2472 return ("unknown"); 2473 } 2474} 2475 2476const char * 2477SSL_get_version(const SSL *s) 2478{ 2479 return ssl_version_string(s->version); 2480} 2481 2482SSL * 2483SSL_dup(SSL *s) 2484{ 2485 STACK_OF(X509_NAME) *sk; 2486 X509_NAME *xn; 2487 SSL *ret; 2488 int i; 2489 2490 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2491 goto err; 2492 2493 ret->version = s->version; 2494 ret->method = s->method; 2495 2496 if (s->session != NULL) { 2497 if (!SSL_copy_session_id(ret, s)) 2498 goto err; 2499 } else { 2500 /* 2501 * No session has been established yet, so we have to expect 2502 * that s->cert or ret->cert will be changed later -- 2503 * they should not both point to the same object, 2504 * and thus we can't use SSL_copy_session_id. 2505 */ 2506 2507 ret->method->internal->ssl_free(ret); 2508 ret->method = s->method; 2509 ret->method->internal->ssl_new(ret); 2510 2511 ssl_cert_free(ret->cert); 2512 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2513 goto err; 2514 2515 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2516 s->sid_ctx_length)) 2517 goto err; 2518 } 2519 2520 ret->internal->options = s->internal->options; 2521 ret->internal->mode = s->internal->mode; 2522 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2523 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2524 ret->internal->msg_callback = s->internal->msg_callback; 2525 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2526 SSL_set_verify(ret, SSL_get_verify_mode(s), 2527 SSL_get_verify_callback(s)); 2528 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2529 ret->internal->generate_session_id = s->internal->generate_session_id; 2530 2531 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2532 2533 ret->internal->debug = s->internal->debug; 2534 2535 /* copy app data, a little dangerous perhaps */ 2536 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2537 &ret->internal->ex_data, &s->internal->ex_data)) 2538 goto err; 2539 2540 /* setup rbio, and wbio */ 2541 if (s->rbio != NULL) { 2542 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2543 goto err; 2544 } 2545 if (s->wbio != NULL) { 2546 if (s->wbio != s->rbio) { 2547 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2548 goto err; 2549 } else 2550 ret->wbio = ret->rbio; 2551 } 2552 ret->internal->rwstate = s->internal->rwstate; 2553 ret->internal->in_handshake = s->internal->in_handshake; 2554 ret->internal->handshake_func = s->internal->handshake_func; 2555 ret->server = s->server; 2556 ret->internal->renegotiate = s->internal->renegotiate; 2557 ret->internal->new_session = s->internal->new_session; 2558 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2559 ret->internal->shutdown = s->internal->shutdown; 2560 /* SSL_dup does not really work at any state, though */ 2561 S3I(ret)->hs.state = S3I(s)->hs.state; 2562 ret->internal->rstate = s->internal->rstate; 2563 2564 /* 2565 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2566 * ret->init_off 2567 */ 2568 ret->internal->init_num = 0; 2569 2570 ret->internal->hit = s->internal->hit; 2571 2572 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2573 2574 if (s->cipher_list != NULL) { 2575 if ((ret->cipher_list = 2576 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2577 goto err; 2578 } 2579 if (s->internal->cipher_list_tls13 != NULL) { 2580 if ((ret->internal->cipher_list_tls13 = 2581 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2582 goto err; 2583 } 2584 2585 /* Dup the client_CA list */ 2586 if (s->internal->client_CA != NULL) { 2587 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2588 ret->internal->client_CA = sk; 2589 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2590 xn = sk_X509_NAME_value(sk, i); 2591 if (sk_X509_NAME_set(sk, i, 2592 X509_NAME_dup(xn)) == NULL) { 2593 X509_NAME_free(xn); 2594 goto err; 2595 } 2596 } 2597 } 2598 2599 return ret; 2600 err: 2601 SSL_free(ret); 2602 return NULL; 2603} 2604 2605void 2606ssl_clear_cipher_state(SSL *s) 2607{ 2608 ssl_clear_cipher_read_state(s); 2609 ssl_clear_cipher_write_state(s); 2610} 2611 2612void 2613ssl_clear_cipher_read_state(SSL *s) 2614{ 2615 tls12_record_layer_clear_read_state(s->internal->rl); 2616 tls12_record_layer_read_cipher_hash(s->internal->rl, 2617 &s->enc_read_ctx, &s->read_hash); 2618} 2619 2620void 2621ssl_clear_cipher_write_state(SSL *s) 2622{ 2623 tls12_record_layer_clear_write_state(s->internal->rl); 2624} 2625 2626/* Fix this function so that it takes an optional type parameter */ 2627X509 * 2628SSL_get_certificate(const SSL *s) 2629{ 2630 return (s->cert->key->x509); 2631} 2632 2633/* Fix this function so that it takes an optional type parameter */ 2634EVP_PKEY * 2635SSL_get_privatekey(const SSL *s) 2636{ 2637 return (s->cert->key->privatekey); 2638} 2639 2640const SSL_CIPHER * 2641SSL_get_current_cipher(const SSL *s) 2642{ 2643 if ((s->session != NULL) && (s->session->cipher != NULL)) 2644 return (s->session->cipher); 2645 return (NULL); 2646} 2647const void * 2648SSL_get_current_compression(SSL *s) 2649{ 2650 return (NULL); 2651} 2652 2653const void * 2654SSL_get_current_expansion(SSL *s) 2655{ 2656 return (NULL); 2657} 2658 2659size_t 2660SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2661{ 2662 size_t len = sizeof(s->s3->client_random); 2663 2664 if (out == NULL) 2665 return len; 2666 2667 if (len > max_out) 2668 len = max_out; 2669 2670 memcpy(out, s->s3->client_random, len); 2671 2672 return len; 2673} 2674 2675size_t 2676SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2677{ 2678 size_t len = sizeof(s->s3->server_random); 2679 2680 if (out == NULL) 2681 return len; 2682 2683 if (len > max_out) 2684 len = max_out; 2685 2686 memcpy(out, s->s3->server_random, len); 2687 2688 return len; 2689} 2690 2691int 2692ssl_init_wbio_buffer(SSL *s, int push) 2693{ 2694 BIO *bbio; 2695 2696 if (s->bbio == NULL) { 2697 bbio = BIO_new(BIO_f_buffer()); 2698 if (bbio == NULL) 2699 return (0); 2700 s->bbio = bbio; 2701 } else { 2702 bbio = s->bbio; 2703 if (s->bbio == s->wbio) 2704 s->wbio = BIO_pop(s->wbio); 2705 } 2706 (void)BIO_reset(bbio); 2707/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2708 if (!BIO_set_read_buffer_size(bbio, 1)) { 2709 SSLerror(s, ERR_R_BUF_LIB); 2710 return (0); 2711 } 2712 if (push) { 2713 if (s->wbio != bbio) 2714 s->wbio = BIO_push(bbio, s->wbio); 2715 } else { 2716 if (s->wbio == bbio) 2717 s->wbio = BIO_pop(bbio); 2718 } 2719 return (1); 2720} 2721 2722void 2723ssl_free_wbio_buffer(SSL *s) 2724{ 2725 if (s == NULL) 2726 return; 2727 2728 if (s->bbio == NULL) 2729 return; 2730 2731 if (s->bbio == s->wbio) { 2732 /* remove buffering */ 2733 s->wbio = BIO_pop(s->wbio); 2734 } 2735 BIO_free(s->bbio); 2736 s->bbio = NULL; 2737} 2738 2739void 2740SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2741{ 2742 ctx->internal->quiet_shutdown = mode; 2743} 2744 2745int 2746SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2747{ 2748 return (ctx->internal->quiet_shutdown); 2749} 2750 2751void 2752SSL_set_quiet_shutdown(SSL *s, int mode) 2753{ 2754 s->internal->quiet_shutdown = mode; 2755} 2756 2757int 2758SSL_get_quiet_shutdown(const SSL *s) 2759{ 2760 return (s->internal->quiet_shutdown); 2761} 2762 2763void 2764SSL_set_shutdown(SSL *s, int mode) 2765{ 2766 s->internal->shutdown = mode; 2767} 2768 2769int 2770SSL_get_shutdown(const SSL *s) 2771{ 2772 return (s->internal->shutdown); 2773} 2774 2775int 2776SSL_version(const SSL *s) 2777{ 2778 return (s->version); 2779} 2780 2781SSL_CTX * 2782SSL_get_SSL_CTX(const SSL *ssl) 2783{ 2784 return (ssl->ctx); 2785} 2786 2787SSL_CTX * 2788SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2789{ 2790 CERT *new_cert; 2791 2792 if (ctx == NULL) 2793 ctx = ssl->initial_ctx; 2794 if (ssl->ctx == ctx) 2795 return (ssl->ctx); 2796 2797 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2798 return NULL; 2799 ssl_cert_free(ssl->cert); 2800 ssl->cert = new_cert; 2801 2802 SSL_CTX_up_ref(ctx); 2803 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2804 ssl->ctx = ctx; 2805 2806 return (ssl->ctx); 2807} 2808 2809int 2810SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2811{ 2812 return (X509_STORE_set_default_paths(ctx->cert_store)); 2813} 2814 2815int 2816SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2817 const char *CApath) 2818{ 2819 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2820} 2821 2822int 2823SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2824{ 2825 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2826} 2827 2828void 2829SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2830{ 2831 ssl->internal->info_callback = cb; 2832} 2833 2834void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2835{ 2836 return (ssl->internal->info_callback); 2837} 2838 2839int 2840SSL_state(const SSL *ssl) 2841{ 2842 return (S3I(ssl)->hs.state); 2843} 2844 2845void 2846SSL_set_state(SSL *ssl, int state) 2847{ 2848 S3I(ssl)->hs.state = state; 2849} 2850 2851void 2852SSL_set_verify_result(SSL *ssl, long arg) 2853{ 2854 ssl->verify_result = arg; 2855} 2856 2857long 2858SSL_get_verify_result(const SSL *ssl) 2859{ 2860 return (ssl->verify_result); 2861} 2862 2863int 2864SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2865 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2866{ 2867 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2868 new_func, dup_func, free_func)); 2869} 2870 2871int 2872SSL_set_ex_data(SSL *s, int idx, void *arg) 2873{ 2874 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2875} 2876 2877void * 2878SSL_get_ex_data(const SSL *s, int idx) 2879{ 2880 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2881} 2882 2883int 2884SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2885 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2886{ 2887 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2888 new_func, dup_func, free_func)); 2889} 2890 2891int 2892SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2893{ 2894 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2895} 2896 2897void * 2898SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2899{ 2900 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2901} 2902 2903int 2904ssl_ok(SSL *s) 2905{ 2906 return (1); 2907} 2908 2909X509_STORE * 2910SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2911{ 2912 return (ctx->cert_store); 2913} 2914 2915void 2916SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2917{ 2918 X509_STORE_free(ctx->cert_store); 2919 ctx->cert_store = store; 2920} 2921 2922X509 * 2923SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2924{ 2925 if (ctx->internal->cert == NULL) 2926 return NULL; 2927 2928 return ctx->internal->cert->key->x509; 2929} 2930 2931int 2932SSL_want(const SSL *s) 2933{ 2934 return (s->internal->rwstate); 2935} 2936 2937void 2938SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2939 int keylength)) 2940{ 2941 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2942} 2943 2944void 2945SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2946 int keylength)) 2947{ 2948 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2949} 2950 2951void 2952SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2953 int keylength)) 2954{ 2955 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2956} 2957 2958void 2959SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2960 int keylength)) 2961{ 2962 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2963} 2964 2965void 2966SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2967 int is_export, int keylength)) 2968{ 2969 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2970 (void (*)(void))ecdh); 2971} 2972 2973void 2974SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2975 int keylength)) 2976{ 2977 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2978} 2979 2980 2981void 2982SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2983 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2984{ 2985 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2986 (void (*)(void))cb); 2987} 2988 2989void 2990SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2991 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2992{ 2993 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2994} 2995 2996void 2997SSL_set_debug(SSL *s, int debug) 2998{ 2999 s->internal->debug = debug; 3000} 3001 3002int 3003SSL_cache_hit(SSL *s) 3004{ 3005 return (s->internal->hit); 3006} 3007 3008int 3009SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3010{ 3011 return ctx->internal->min_proto_version; 3012} 3013 3014int 3015SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3016{ 3017 return ssl_version_set_min(ctx->method, version, 3018 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3019 &ctx->internal->min_proto_version); 3020} 3021 3022int 3023SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3024{ 3025 return ctx->internal->max_proto_version; 3026} 3027 3028int 3029SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3030{ 3031 return ssl_version_set_max(ctx->method, version, 3032 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3033 &ctx->internal->max_proto_version); 3034} 3035 3036int 3037SSL_get_min_proto_version(SSL *ssl) 3038{ 3039 return ssl->internal->min_proto_version; 3040} 3041 3042int 3043SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3044{ 3045 return ssl_version_set_min(ssl->method, version, 3046 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3047 &ssl->internal->min_proto_version); 3048} 3049int 3050SSL_get_max_proto_version(SSL *ssl) 3051{ 3052 return ssl->internal->max_proto_version; 3053} 3054 3055int 3056SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3057{ 3058 return ssl_version_set_max(ssl->method, version, 3059 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3060 &ssl->internal->max_proto_version); 3061} 3062 3063const SSL_METHOD * 3064SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3065{ 3066 return ctx->method; 3067} 3068 3069static int 3070ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3071{ 3072 SSL_CIPHER const *a = a_; 3073 SSL_CIPHER const *b = b_; 3074 return ssl_cipher_id_cmp(a, b); 3075} 3076 3077SSL_CIPHER * 3078OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3079{ 3080 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3081 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3082} 3083