ssl_lib.c revision 1.186
1/* $OpenBSD: ssl_lib.c,v 1.186 2018/08/24 20:30:21 tb Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <stdio.h> 144 145#include "ssl_locl.h" 146 147#include <openssl/bn.h> 148#include <openssl/dh.h> 149#include <openssl/lhash.h> 150#include <openssl/objects.h> 151#include <openssl/ocsp.h> 152#include <openssl/x509v3.h> 153 154#ifndef OPENSSL_NO_ENGINE 155#include <openssl/engine.h> 156#endif 157 158#include "bytestring.h" 159 160const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162int 163SSL_clear(SSL *s) 164{ 165 if (s->method == NULL) { 166 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 167 return (0); 168 } 169 170 if (ssl_clear_bad_session(s)) { 171 SSL_SESSION_free(s->session); 172 s->session = NULL; 173 } 174 175 s->error = 0; 176 s->internal->hit = 0; 177 s->internal->shutdown = 0; 178 179 if (s->internal->renegotiate) { 180 SSLerror(s, ERR_R_INTERNAL_ERROR); 181 return (0); 182 } 183 184 s->internal->type = 0; 185 186 s->version = s->method->internal->version; 187 s->client_version = s->version; 188 s->internal->rwstate = SSL_NOTHING; 189 s->internal->rstate = SSL_ST_READ_HEADER; 190 191 BUF_MEM_free(s->internal->init_buf); 192 s->internal->init_buf = NULL; 193 194 ssl_clear_cipher_ctx(s); 195 ssl_clear_hash_ctx(&s->read_hash); 196 ssl_clear_hash_ctx(&s->internal->write_hash); 197 198 s->internal->first_packet = 0; 199 200 /* 201 * Check to see if we were changed into a different method, if 202 * so, revert back if we are not doing session-id reuse. 203 */ 204 if (!s->internal->in_handshake && (s->session == NULL) && 205 (s->method != s->ctx->method)) { 206 s->method->internal->ssl_free(s); 207 s->method = s->ctx->method; 208 if (!s->method->internal->ssl_new(s)) 209 return (0); 210 } else 211 s->method->internal->ssl_clear(s); 212 213 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 return (1); 216} 217 218/* Used to change an SSL_CTXs default SSL method type */ 219int 220SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 221{ 222 STACK_OF(SSL_CIPHER) *sk; 223 224 ctx->method = meth; 225 226 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 227 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 228 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 229 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 230 return (0); 231 } 232 return (1); 233} 234 235SSL * 236SSL_new(SSL_CTX *ctx) 237{ 238 SSL *s; 239 240 if (ctx == NULL) { 241 SSLerrorx(SSL_R_NULL_SSL_CTX); 242 return (NULL); 243 } 244 if (ctx->method == NULL) { 245 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 246 return (NULL); 247 } 248 249 if ((s = calloc(1, sizeof(*s))) == NULL) { 250 SSLerrorx(ERR_R_MALLOC_FAILURE); 251 return (NULL); 252 } 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 254 free(s); 255 SSLerrorx(ERR_R_MALLOC_FAILURE); 256 return (NULL); 257 } 258 259 s->internal->min_version = ctx->internal->min_version; 260 s->internal->max_version = ctx->internal->max_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 (ctx->internal->cert != NULL) { 267 /* 268 * Earlier library versions used to copy the pointer to 269 * the CERT, not its contents; only when setting new 270 * parameters for the per-SSL copy, ssl_cert_new would be 271 * called (and the direct reference to the per-SSL_CTX 272 * settings would be lost, but those still were indirectly 273 * accessed for various purposes, and for that reason they 274 * used to be known as s->ctx->default_cert). 275 * Now we don't look at the SSL_CTX's CERT after having 276 * duplicated it once. 277 */ 278 s->cert = ssl_cert_dup(ctx->internal->cert); 279 if (s->cert == NULL) 280 goto err; 281 } else 282 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 283 284 s->internal->read_ahead = ctx->internal->read_ahead; 285 s->internal->msg_callback = ctx->internal->msg_callback; 286 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 287 s->verify_mode = ctx->verify_mode; 288 s->sid_ctx_length = ctx->sid_ctx_length; 289 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 290 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 291 s->internal->verify_callback = ctx->internal->default_verify_callback; 292 s->internal->generate_session_id = ctx->internal->generate_session_id; 293 294 s->param = X509_VERIFY_PARAM_new(); 295 if (!s->param) 296 goto err; 297 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 298 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 299 s->max_send_fragment = ctx->internal->max_send_fragment; 300 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->ctx = ctx; 303 s->internal->tlsext_debug_cb = 0; 304 s->internal->tlsext_debug_arg = NULL; 305 s->internal->tlsext_ticket_expected = 0; 306 s->tlsext_status_type = -1; 307 s->internal->tlsext_status_expected = 0; 308 s->internal->tlsext_ocsp_ids = NULL; 309 s->internal->tlsext_ocsp_exts = NULL; 310 s->internal->tlsext_ocsp_resp = NULL; 311 s->internal->tlsext_ocsp_resplen = -1; 312 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 313 s->initial_ctx = ctx; 314 315 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 316 s->internal->tlsext_ecpointformatlist = 317 calloc(ctx->internal->tlsext_ecpointformatlist_length, 318 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 319 if (s->internal->tlsext_ecpointformatlist == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_ecpointformatlist, 322 ctx->internal->tlsext_ecpointformatlist, 323 ctx->internal->tlsext_ecpointformatlist_length * 324 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 325 s->internal->tlsext_ecpointformatlist_length = 326 ctx->internal->tlsext_ecpointformatlist_length; 327 } 328 if (ctx->internal->tlsext_supportedgroups != NULL) { 329 s->internal->tlsext_supportedgroups = 330 calloc(ctx->internal->tlsext_supportedgroups_length, 331 sizeof(ctx->internal->tlsext_supportedgroups)); 332 if (s->internal->tlsext_supportedgroups == NULL) 333 goto err; 334 memcpy(s->internal->tlsext_supportedgroups, 335 ctx->internal->tlsext_supportedgroups, 336 ctx->internal->tlsext_supportedgroups_length * 337 sizeof(ctx->internal->tlsext_supportedgroups[0])); 338 s->internal->tlsext_supportedgroups_length = 339 ctx->internal->tlsext_supportedgroups_length; 340 } 341 342 if (s->ctx->internal->alpn_client_proto_list != NULL) { 343 s->internal->alpn_client_proto_list = 344 malloc(s->ctx->internal->alpn_client_proto_list_len); 345 if (s->internal->alpn_client_proto_list == NULL) 346 goto err; 347 memcpy(s->internal->alpn_client_proto_list, 348 s->ctx->internal->alpn_client_proto_list, 349 s->ctx->internal->alpn_client_proto_list_len); 350 s->internal->alpn_client_proto_list_len = 351 s->ctx->internal->alpn_client_proto_list_len; 352 } 353 354 s->verify_result = X509_V_OK; 355 356 s->method = ctx->method; 357 358 if (!s->method->internal->ssl_new(s)) 359 goto err; 360 361 s->references = 1; 362 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 363 364 SSL_clear(s); 365 366 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 367 368 return (s); 369 370 err: 371 SSL_free(s); 372 SSLerrorx(ERR_R_MALLOC_FAILURE); 373 return (NULL); 374} 375 376int 377SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 378 unsigned int sid_ctx_len) 379{ 380 if (sid_ctx_len > sizeof ctx->sid_ctx) { 381 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 382 return (0); 383 } 384 ctx->sid_ctx_length = sid_ctx_len; 385 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 386 387 return (1); 388} 389 390int 391SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 392 unsigned int sid_ctx_len) 393{ 394 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 395 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 396 return (0); 397 } 398 ssl->sid_ctx_length = sid_ctx_len; 399 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 400 401 return (1); 402} 403 404int 405SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 406{ 407 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 408 ctx->internal->generate_session_id = cb; 409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 410 return (1); 411} 412 413int 414SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 415{ 416 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 417 ssl->internal->generate_session_id = cb; 418 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 419 return (1); 420} 421 422int 423SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 424 unsigned int id_len) 425{ 426 /* 427 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 428 * shows how we can "construct" a session to give us the desired 429 * check - ie. to find if there's a session in the hash table 430 * that would conflict with any new session built out of this 431 * id/id_len and the ssl_version in use by this SSL. 432 */ 433 SSL_SESSION r, *p; 434 435 if (id_len > sizeof r.session_id) 436 return (0); 437 438 r.ssl_version = ssl->version; 439 r.session_id_length = id_len; 440 memcpy(r.session_id, id, id_len); 441 442 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 443 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 444 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 445 return (p != NULL); 446} 447 448int 449SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 450{ 451 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 452} 453 454int 455SSL_set_purpose(SSL *s, int purpose) 456{ 457 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 458} 459 460int 461SSL_CTX_set_trust(SSL_CTX *s, int trust) 462{ 463 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 464} 465 466int 467SSL_set_trust(SSL *s, int trust) 468{ 469 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 470} 471 472X509_VERIFY_PARAM * 473SSL_CTX_get0_param(SSL_CTX *ctx) 474{ 475 return (ctx->param); 476} 477 478int 479SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 480{ 481 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 482} 483 484X509_VERIFY_PARAM * 485SSL_get0_param(SSL *ssl) 486{ 487 return (ssl->param); 488} 489 490int 491SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 492{ 493 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 494} 495 496void 497SSL_free(SSL *s) 498{ 499 int i; 500 501 if (s == NULL) 502 return; 503 504 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 505 if (i > 0) 506 return; 507 508 X509_VERIFY_PARAM_free(s->param); 509 510 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 511 512 if (s->bbio != NULL) { 513 /* If the buffering BIO is in place, pop it off */ 514 if (s->bbio == s->wbio) { 515 s->wbio = BIO_pop(s->wbio); 516 } 517 BIO_free(s->bbio); 518 s->bbio = NULL; 519 } 520 521 if (s->rbio != s->wbio) 522 BIO_free_all(s->rbio); 523 BIO_free_all(s->wbio); 524 525 BUF_MEM_free(s->internal->init_buf); 526 527 /* add extra stuff */ 528 sk_SSL_CIPHER_free(s->cipher_list); 529 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 530 531 /* Make the next call work :-) */ 532 if (s->session != NULL) { 533 ssl_clear_bad_session(s); 534 SSL_SESSION_free(s->session); 535 } 536 537 ssl_clear_cipher_ctx(s); 538 ssl_clear_hash_ctx(&s->read_hash); 539 ssl_clear_hash_ctx(&s->internal->write_hash); 540 541 ssl_cert_free(s->cert); 542 543 free(s->tlsext_hostname); 544 SSL_CTX_free(s->initial_ctx); 545 546 free(s->internal->tlsext_ecpointformatlist); 547 free(s->internal->tlsext_supportedgroups); 548 549 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 550 X509_EXTENSION_free); 551 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 552 free(s->internal->tlsext_ocsp_resp); 553 554 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 555 556 if (s->method != NULL) 557 s->method->internal->ssl_free(s); 558 559 SSL_CTX_free(s->ctx); 560 561 free(s->internal->alpn_client_proto_list); 562 563#ifndef OPENSSL_NO_SRTP 564 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 565#endif 566 567 free(s->internal); 568 free(s); 569} 570 571int 572SSL_up_ref(SSL *s) 573{ 574 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 575 return (refs > 1) ? 1 : 0; 576} 577 578void 579SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 580{ 581 /* If the output buffering BIO is still in place, remove it */ 582 if (s->bbio != NULL) { 583 if (s->wbio == s->bbio) { 584 s->wbio = s->wbio->next_bio; 585 s->bbio->next_bio = NULL; 586 } 587 } 588 589 if (s->rbio != rbio && s->rbio != s->wbio) 590 BIO_free_all(s->rbio); 591 if (s->wbio != wbio) 592 BIO_free_all(s->wbio); 593 s->rbio = rbio; 594 s->wbio = wbio; 595} 596 597BIO * 598SSL_get_rbio(const SSL *s) 599{ 600 return (s->rbio); 601} 602 603BIO * 604SSL_get_wbio(const SSL *s) 605{ 606 return (s->wbio); 607} 608 609int 610SSL_get_fd(const SSL *s) 611{ 612 return (SSL_get_rfd(s)); 613} 614 615int 616SSL_get_rfd(const SSL *s) 617{ 618 int ret = -1; 619 BIO *b, *r; 620 621 b = SSL_get_rbio(s); 622 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 623 if (r != NULL) 624 BIO_get_fd(r, &ret); 625 return (ret); 626} 627 628int 629SSL_get_wfd(const SSL *s) 630{ 631 int ret = -1; 632 BIO *b, *r; 633 634 b = SSL_get_wbio(s); 635 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 636 if (r != NULL) 637 BIO_get_fd(r, &ret); 638 return (ret); 639} 640 641int 642SSL_set_fd(SSL *s, int fd) 643{ 644 int ret = 0; 645 BIO *bio = NULL; 646 647 bio = BIO_new(BIO_s_socket()); 648 649 if (bio == NULL) { 650 SSLerror(s, ERR_R_BUF_LIB); 651 goto err; 652 } 653 BIO_set_fd(bio, fd, BIO_NOCLOSE); 654 SSL_set_bio(s, bio, bio); 655 ret = 1; 656err: 657 return (ret); 658} 659 660int 661SSL_set_wfd(SSL *s, int fd) 662{ 663 int ret = 0; 664 BIO *bio = NULL; 665 666 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 667 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, SSL_get_rbio(s), bio); 676 } else 677 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 678 ret = 1; 679err: 680 return (ret); 681} 682 683int 684SSL_set_rfd(SSL *s, int fd) 685{ 686 int ret = 0; 687 BIO *bio = NULL; 688 689 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 690 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 691 bio = BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) { 694 SSLerror(s, ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, bio, SSL_get_wbio(s)); 699 } else 700 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 701 ret = 1; 702err: 703 return (ret); 704} 705 706 707/* return length of latest Finished message we sent, copy to 'buf' */ 708size_t 709SSL_get_finished(const SSL *s, void *buf, size_t count) 710{ 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = S3I(s)->tmp.finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, S3I(s)->tmp.finish_md, count); 718 } 719 return (ret); 720} 721 722/* return length of latest Finished message we expected, copy to 'buf' */ 723size_t 724SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 725{ 726 size_t ret = 0; 727 728 if (s->s3 != NULL) { 729 ret = S3I(s)->tmp.peer_finish_md_len; 730 if (count > ret) 731 count = ret; 732 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 733 } 734 return (ret); 735} 736 737 738int 739SSL_get_verify_mode(const SSL *s) 740{ 741 return (s->verify_mode); 742} 743 744int 745SSL_get_verify_depth(const SSL *s) 746{ 747 return (X509_VERIFY_PARAM_get_depth(s->param)); 748} 749 750int 751(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 752{ 753 return (s->internal->verify_callback); 754} 755 756int 757SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 758{ 759 return (ctx->verify_mode); 760} 761 762int 763SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 764{ 765 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 766} 767 768int 769(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 770{ 771 return (ctx->internal->default_verify_callback); 772} 773 774void 775SSL_set_verify(SSL *s, int mode, 776 int (*callback)(int ok, X509_STORE_CTX *ctx)) 777{ 778 s->verify_mode = mode; 779 if (callback != NULL) 780 s->internal->verify_callback = callback; 781} 782 783void 784SSL_set_verify_depth(SSL *s, int depth) 785{ 786 X509_VERIFY_PARAM_set_depth(s->param, depth); 787} 788 789void 790SSL_set_read_ahead(SSL *s, int yes) 791{ 792 s->internal->read_ahead = yes; 793} 794 795int 796SSL_get_read_ahead(const SSL *s) 797{ 798 return (s->internal->read_ahead); 799} 800 801int 802SSL_pending(const SSL *s) 803{ 804 /* 805 * SSL_pending cannot work properly if read-ahead is enabled 806 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 807 * and it is impossible to fix since SSL_pending cannot report 808 * errors that may be observed while scanning the new data. 809 * (Note that SSL_pending() is often used as a boolean value, 810 * so we'd better not return -1.) 811 */ 812 return (s->method->internal->ssl_pending(s)); 813} 814 815X509 * 816SSL_get_peer_certificate(const SSL *s) 817{ 818 X509 *r; 819 820 if ((s == NULL) || (s->session == NULL)) 821 r = NULL; 822 else 823 r = s->session->peer; 824 825 if (r == NULL) 826 return (r); 827 828 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 829 830 return (r); 831} 832 833STACK_OF(X509) * 834SSL_get_peer_cert_chain(const SSL *s) 835{ 836 STACK_OF(X509) *r; 837 838 if ((s == NULL) || (s->session == NULL) || 839 (SSI(s)->sess_cert == NULL)) 840 r = NULL; 841 else 842 r = SSI(s)->sess_cert->cert_chain; 843 844 /* 845 * If we are a client, cert_chain includes the peer's own 846 * certificate; 847 * if we are a server, it does not. 848 */ 849 return (r); 850} 851 852/* 853 * Now in theory, since the calling process own 't' it should be safe to 854 * modify. We need to be able to read f without being hassled 855 */ 856int 857SSL_copy_session_id(SSL *t, const SSL *f) 858{ 859 CERT *tmp; 860 861 /* Do we need to do SSL locking? */ 862 if (!SSL_set_session(t, SSL_get_session(f))) 863 return 0; 864 865 /* What if we are set up for one protocol but want to talk another? */ 866 if (t->method != f->method) { 867 t->method->internal->ssl_free(t); 868 t->method = f->method; 869 if (!t->method->internal->ssl_new(t)) 870 return 0; 871 } 872 873 tmp = t->cert; 874 if (f->cert != NULL) { 875 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 876 t->cert = f->cert; 877 } else 878 t->cert = NULL; 879 ssl_cert_free(tmp); 880 881 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 882 return 0; 883 884 return 1; 885} 886 887/* Fix this so it checks all the valid key/cert options */ 888int 889SSL_CTX_check_private_key(const SSL_CTX *ctx) 890{ 891 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 892 (ctx->internal->cert->key->x509 == NULL)) { 893 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 894 return (0); 895 } 896 if (ctx->internal->cert->key->privatekey == NULL) { 897 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 898 return (0); 899 } 900 return (X509_check_private_key(ctx->internal->cert->key->x509, 901 ctx->internal->cert->key->privatekey)); 902} 903 904/* Fix this function so that it takes an optional type parameter */ 905int 906SSL_check_private_key(const SSL *ssl) 907{ 908 if (ssl == NULL) { 909 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 910 return (0); 911 } 912 if (ssl->cert == NULL) { 913 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 914 return (0); 915 } 916 if (ssl->cert->key->x509 == NULL) { 917 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 918 return (0); 919 } 920 if (ssl->cert->key->privatekey == NULL) { 921 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 922 return (0); 923 } 924 return (X509_check_private_key(ssl->cert->key->x509, 925 ssl->cert->key->privatekey)); 926} 927 928int 929SSL_accept(SSL *s) 930{ 931 if (s->internal->handshake_func == NULL) 932 SSL_set_accept_state(s); /* Not properly initialized yet */ 933 934 return (s->method->internal->ssl_accept(s)); 935} 936 937int 938SSL_connect(SSL *s) 939{ 940 if (s->internal->handshake_func == NULL) 941 SSL_set_connect_state(s); /* Not properly initialized yet */ 942 943 return (s->method->internal->ssl_connect(s)); 944} 945 946int 947SSL_is_server(const SSL *s) 948{ 949 return s->server; 950} 951 952long 953SSL_get_default_timeout(const SSL *s) 954{ 955 return (s->method->internal->get_timeout()); 956} 957 958int 959SSL_read(SSL *s, void *buf, int num) 960{ 961 if (s->internal->handshake_func == NULL) { 962 SSLerror(s, SSL_R_UNINITIALIZED); 963 return (-1); 964 } 965 966 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 967 s->internal->rwstate = SSL_NOTHING; 968 return (0); 969 } 970 return ssl3_read(s, buf, num); 971} 972 973int 974SSL_peek(SSL *s, void *buf, int num) 975{ 976 if (s->internal->handshake_func == NULL) { 977 SSLerror(s, SSL_R_UNINITIALIZED); 978 return (-1); 979 } 980 981 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 982 return (0); 983 } 984 return ssl3_peek(s, buf, num); 985} 986 987int 988SSL_write(SSL *s, const void *buf, int num) 989{ 990 if (s->internal->handshake_func == NULL) { 991 SSLerror(s, SSL_R_UNINITIALIZED); 992 return (-1); 993 } 994 995 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 996 s->internal->rwstate = SSL_NOTHING; 997 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 998 return (-1); 999 } 1000 return ssl3_write(s, buf, num); 1001} 1002 1003int 1004SSL_shutdown(SSL *s) 1005{ 1006 /* 1007 * Note that this function behaves differently from what one might 1008 * expect. Return values are 0 for no success (yet), 1009 * 1 for success; but calling it once is usually not enough, 1010 * even if blocking I/O is used (see ssl3_shutdown). 1011 */ 1012 1013 if (s->internal->handshake_func == NULL) { 1014 SSLerror(s, SSL_R_UNINITIALIZED); 1015 return (-1); 1016 } 1017 1018 if ((s != NULL) && !SSL_in_init(s)) 1019 return (s->method->internal->ssl_shutdown(s)); 1020 else 1021 return (1); 1022} 1023 1024int 1025SSL_renegotiate(SSL *s) 1026{ 1027 if (s->internal->renegotiate == 0) 1028 s->internal->renegotiate = 1; 1029 1030 s->internal->new_session = 1; 1031 1032 return (s->method->internal->ssl_renegotiate(s)); 1033} 1034 1035int 1036SSL_renegotiate_abbreviated(SSL *s) 1037{ 1038 if (s->internal->renegotiate == 0) 1039 s->internal->renegotiate = 1; 1040 1041 s->internal->new_session = 0; 1042 1043 return (s->method->internal->ssl_renegotiate(s)); 1044} 1045 1046int 1047SSL_renegotiate_pending(SSL *s) 1048{ 1049 /* 1050 * Becomes true when negotiation is requested; 1051 * false again once a handshake has finished. 1052 */ 1053 return (s->internal->renegotiate != 0); 1054} 1055 1056long 1057SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1058{ 1059 long l; 1060 1061 switch (cmd) { 1062 case SSL_CTRL_GET_READ_AHEAD: 1063 return (s->internal->read_ahead); 1064 case SSL_CTRL_SET_READ_AHEAD: 1065 l = s->internal->read_ahead; 1066 s->internal->read_ahead = larg; 1067 return (l); 1068 1069 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1070 s->internal->msg_callback_arg = parg; 1071 return (1); 1072 1073 case SSL_CTRL_OPTIONS: 1074 return (s->internal->options|=larg); 1075 case SSL_CTRL_CLEAR_OPTIONS: 1076 return (s->internal->options&=~larg); 1077 case SSL_CTRL_MODE: 1078 return (s->internal->mode|=larg); 1079 case SSL_CTRL_CLEAR_MODE: 1080 return (s->internal->mode &=~larg); 1081 case SSL_CTRL_GET_MAX_CERT_LIST: 1082 return (s->internal->max_cert_list); 1083 case SSL_CTRL_SET_MAX_CERT_LIST: 1084 l = s->internal->max_cert_list; 1085 s->internal->max_cert_list = larg; 1086 return (l); 1087 case SSL_CTRL_SET_MTU: 1088#ifndef OPENSSL_NO_DTLS1 1089 if (larg < (long)dtls1_min_mtu()) 1090 return (0); 1091#endif 1092 if (SSL_IS_DTLS(s)) { 1093 D1I(s)->mtu = larg; 1094 return (larg); 1095 } 1096 return (0); 1097 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1098 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1099 return (0); 1100 s->max_send_fragment = larg; 1101 return (1); 1102 case SSL_CTRL_GET_RI_SUPPORT: 1103 if (s->s3) 1104 return (S3I(s)->send_connection_binding); 1105 else return (0); 1106 default: 1107 if (SSL_IS_DTLS(s)) 1108 return dtls1_ctrl(s, cmd, larg, parg); 1109 return ssl3_ctrl(s, cmd, larg, parg); 1110 } 1111} 1112 1113long 1114SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1115{ 1116 switch (cmd) { 1117 case SSL_CTRL_SET_MSG_CALLBACK: 1118 s->internal->msg_callback = (void (*)(int write_p, int version, 1119 int content_type, const void *buf, size_t len, 1120 SSL *ssl, void *arg))(fp); 1121 return (1); 1122 1123 default: 1124 return (ssl3_callback_ctrl(s, cmd, fp)); 1125 } 1126} 1127 1128struct lhash_st_SSL_SESSION * 1129SSL_CTX_sessions(SSL_CTX *ctx) 1130{ 1131 return (ctx->internal->sessions); 1132} 1133 1134long 1135SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1136{ 1137 long l; 1138 1139 switch (cmd) { 1140 case SSL_CTRL_GET_READ_AHEAD: 1141 return (ctx->internal->read_ahead); 1142 case SSL_CTRL_SET_READ_AHEAD: 1143 l = ctx->internal->read_ahead; 1144 ctx->internal->read_ahead = larg; 1145 return (l); 1146 1147 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1148 ctx->internal->msg_callback_arg = parg; 1149 return (1); 1150 1151 case SSL_CTRL_GET_MAX_CERT_LIST: 1152 return (ctx->internal->max_cert_list); 1153 case SSL_CTRL_SET_MAX_CERT_LIST: 1154 l = ctx->internal->max_cert_list; 1155 ctx->internal->max_cert_list = larg; 1156 return (l); 1157 1158 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1159 l = ctx->internal->session_cache_size; 1160 ctx->internal->session_cache_size = larg; 1161 return (l); 1162 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1163 return (ctx->internal->session_cache_size); 1164 case SSL_CTRL_SET_SESS_CACHE_MODE: 1165 l = ctx->internal->session_cache_mode; 1166 ctx->internal->session_cache_mode = larg; 1167 return (l); 1168 case SSL_CTRL_GET_SESS_CACHE_MODE: 1169 return (ctx->internal->session_cache_mode); 1170 1171 case SSL_CTRL_SESS_NUMBER: 1172 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1173 case SSL_CTRL_SESS_CONNECT: 1174 return (ctx->internal->stats.sess_connect); 1175 case SSL_CTRL_SESS_CONNECT_GOOD: 1176 return (ctx->internal->stats.sess_connect_good); 1177 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1178 return (ctx->internal->stats.sess_connect_renegotiate); 1179 case SSL_CTRL_SESS_ACCEPT: 1180 return (ctx->internal->stats.sess_accept); 1181 case SSL_CTRL_SESS_ACCEPT_GOOD: 1182 return (ctx->internal->stats.sess_accept_good); 1183 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1184 return (ctx->internal->stats.sess_accept_renegotiate); 1185 case SSL_CTRL_SESS_HIT: 1186 return (ctx->internal->stats.sess_hit); 1187 case SSL_CTRL_SESS_CB_HIT: 1188 return (ctx->internal->stats.sess_cb_hit); 1189 case SSL_CTRL_SESS_MISSES: 1190 return (ctx->internal->stats.sess_miss); 1191 case SSL_CTRL_SESS_TIMEOUTS: 1192 return (ctx->internal->stats.sess_timeout); 1193 case SSL_CTRL_SESS_CACHE_FULL: 1194 return (ctx->internal->stats.sess_cache_full); 1195 case SSL_CTRL_OPTIONS: 1196 return (ctx->internal->options|=larg); 1197 case SSL_CTRL_CLEAR_OPTIONS: 1198 return (ctx->internal->options&=~larg); 1199 case SSL_CTRL_MODE: 1200 return (ctx->internal->mode|=larg); 1201 case SSL_CTRL_CLEAR_MODE: 1202 return (ctx->internal->mode&=~larg); 1203 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1204 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1205 return (0); 1206 ctx->internal->max_send_fragment = larg; 1207 return (1); 1208 default: 1209 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1210 } 1211} 1212 1213long 1214SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1215{ 1216 switch (cmd) { 1217 case SSL_CTRL_SET_MSG_CALLBACK: 1218 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1219 int content_type, const void *buf, size_t len, SSL *ssl, 1220 void *arg))(fp); 1221 return (1); 1222 1223 default: 1224 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1225 } 1226} 1227 1228int 1229ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1230{ 1231 long l; 1232 1233 l = a->id - b->id; 1234 if (l == 0L) 1235 return (0); 1236 else 1237 return ((l > 0) ? 1:-1); 1238} 1239 1240int 1241ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1242 const SSL_CIPHER * const *bp) 1243{ 1244 long l; 1245 1246 l = (*ap)->id - (*bp)->id; 1247 if (l == 0L) 1248 return (0); 1249 else 1250 return ((l > 0) ? 1:-1); 1251} 1252 1253/* 1254 * Return a STACK of the ciphers available for the SSL and in order of 1255 * preference. 1256 */ 1257STACK_OF(SSL_CIPHER) * 1258SSL_get_ciphers(const SSL *s) 1259{ 1260 if (s != NULL) { 1261 if (s->cipher_list != NULL) { 1262 return (s->cipher_list); 1263 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1264 return (s->ctx->cipher_list); 1265 } 1266 } 1267 return (NULL); 1268} 1269 1270/* 1271 * Return a STACK of the ciphers available for the SSL and in order of 1272 * algorithm id. 1273 */ 1274STACK_OF(SSL_CIPHER) * 1275ssl_get_ciphers_by_id(SSL *s) 1276{ 1277 if (s != NULL) { 1278 if (s->internal->cipher_list_by_id != NULL) { 1279 return (s->internal->cipher_list_by_id); 1280 } else if ((s->ctx != NULL) && 1281 (s->ctx->internal->cipher_list_by_id != NULL)) { 1282 return (s->ctx->internal->cipher_list_by_id); 1283 } 1284 } 1285 return (NULL); 1286} 1287 1288/* See if we have any ECC cipher suites. */ 1289int 1290ssl_has_ecc_ciphers(SSL *s) 1291{ 1292 STACK_OF(SSL_CIPHER) *ciphers; 1293 unsigned long alg_k, alg_a; 1294 SSL_CIPHER *cipher; 1295 int i; 1296 1297 if (s->version == DTLS1_VERSION) 1298 return 0; 1299 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1300 return 0; 1301 1302 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1303 cipher = sk_SSL_CIPHER_value(ciphers, i); 1304 1305 alg_k = cipher->algorithm_mkey; 1306 alg_a = cipher->algorithm_auth; 1307 1308 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1309 return 1; 1310 } 1311 1312 return 0; 1313} 1314 1315/* The old interface to get the same thing as SSL_get_ciphers(). */ 1316const char * 1317SSL_get_cipher_list(const SSL *s, int n) 1318{ 1319 SSL_CIPHER *c; 1320 STACK_OF(SSL_CIPHER) *sk; 1321 1322 if (s == NULL) 1323 return (NULL); 1324 sk = SSL_get_ciphers(s); 1325 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1326 return (NULL); 1327 c = sk_SSL_CIPHER_value(sk, n); 1328 if (c == NULL) 1329 return (NULL); 1330 return (c->name); 1331} 1332 1333STACK_OF(SSL_CIPHER) * 1334SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1335{ 1336 return ctx->cipher_list; 1337} 1338 1339/* Specify the ciphers to be used by default by the SSL_CTX. */ 1340int 1341SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1342{ 1343 STACK_OF(SSL_CIPHER) *sk; 1344 1345 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1346 &ctx->internal->cipher_list_by_id, str); 1347 /* 1348 * ssl_create_cipher_list may return an empty stack if it 1349 * was unable to find a cipher matching the given rule string 1350 * (for example if the rule string specifies a cipher which 1351 * has been disabled). This is not an error as far as 1352 * ssl_create_cipher_list is concerned, and hence 1353 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1354 * updated. 1355 */ 1356 if (sk == NULL) 1357 return (0); 1358 else if (sk_SSL_CIPHER_num(sk) == 0) { 1359 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1360 return (0); 1361 } 1362 return (1); 1363} 1364 1365/* Specify the ciphers to be used by the SSL. */ 1366int 1367SSL_set_cipher_list(SSL *s, const char *str) 1368{ 1369 STACK_OF(SSL_CIPHER) *sk; 1370 1371 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1372 &s->internal->cipher_list_by_id, str); 1373 /* see comment in SSL_CTX_set_cipher_list */ 1374 if (sk == NULL) 1375 return (0); 1376 else if (sk_SSL_CIPHER_num(sk) == 0) { 1377 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1378 return (0); 1379 } 1380 return (1); 1381} 1382 1383/* works well for SSLv2, not so good for SSLv3 */ 1384char * 1385SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1386{ 1387 char *end; 1388 STACK_OF(SSL_CIPHER) *sk; 1389 SSL_CIPHER *c; 1390 size_t curlen = 0; 1391 int i; 1392 1393 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1394 return (NULL); 1395 1396 sk = s->session->ciphers; 1397 if (sk_SSL_CIPHER_num(sk) == 0) 1398 return (NULL); 1399 1400 buf[0] = '\0'; 1401 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1402 c = sk_SSL_CIPHER_value(sk, i); 1403 end = buf + curlen; 1404 if (strlcat(buf, c->name, len) >= len || 1405 (curlen = strlcat(buf, ":", len)) >= len) { 1406 /* remove truncated cipher from list */ 1407 *end = '\0'; 1408 break; 1409 } 1410 } 1411 /* remove trailing colon */ 1412 if ((end = strrchr(buf, ':')) != NULL) 1413 *end = '\0'; 1414 return (buf); 1415} 1416 1417int 1418ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1419{ 1420 SSL_CIPHER *cipher; 1421 int num_ciphers = 0; 1422 int i; 1423 1424 if (ciphers == NULL) 1425 return 0; 1426 1427 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1428 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1429 return 0; 1430 1431 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1432 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1433 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1434 continue; 1435 1436 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1437 return 0; 1438 1439 num_ciphers++; 1440 } 1441 1442 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1443 if (num_ciphers > 0 && !s->internal->renegotiate) { 1444 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1445 return 0; 1446 } 1447 1448 if (!CBB_flush(cbb)) 1449 return 0; 1450 1451 return 1; 1452} 1453 1454STACK_OF(SSL_CIPHER) * 1455ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1456{ 1457 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1458 const SSL_CIPHER *cipher; 1459 uint16_t cipher_value, max_version; 1460 unsigned long cipher_id; 1461 1462 if (s->s3 != NULL) 1463 S3I(s)->send_connection_binding = 0; 1464 1465 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1466 SSLerror(s, ERR_R_MALLOC_FAILURE); 1467 goto err; 1468 } 1469 1470 while (CBS_len(cbs) > 0) { 1471 if (!CBS_get_u16(cbs, &cipher_value)) { 1472 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1473 goto err; 1474 } 1475 1476 cipher_id = SSL3_CK_ID | cipher_value; 1477 1478 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1479 /* 1480 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1481 * renegotiating. 1482 */ 1483 if (s->internal->renegotiate) { 1484 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1485 ssl3_send_alert(s, SSL3_AL_FATAL, 1486 SSL_AD_HANDSHAKE_FAILURE); 1487 1488 goto err; 1489 } 1490 S3I(s)->send_connection_binding = 1; 1491 continue; 1492 } 1493 1494 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1495 /* 1496 * TLS_FALLBACK_SCSV indicates that the client 1497 * previously tried a higher protocol version. 1498 * Fail if the current version is an unexpected 1499 * downgrade. 1500 */ 1501 max_version = ssl_max_server_version(s); 1502 if (max_version == 0 || s->version < max_version) { 1503 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1504 if (s->s3 != NULL) 1505 ssl3_send_alert(s, SSL3_AL_FATAL, 1506 SSL_AD_INAPPROPRIATE_FALLBACK); 1507 goto err; 1508 } 1509 continue; 1510 } 1511 1512 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1513 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1514 SSLerror(s, ERR_R_MALLOC_FAILURE); 1515 goto err; 1516 } 1517 } 1518 } 1519 1520 return (ciphers); 1521 1522err: 1523 sk_SSL_CIPHER_free(ciphers); 1524 1525 return (NULL); 1526} 1527 1528 1529/* 1530 * Return a servername extension value if provided in Client Hello, or NULL. 1531 * So far, only host_name types are defined (RFC 3546). 1532 */ 1533const char * 1534SSL_get_servername(const SSL *s, const int type) 1535{ 1536 if (type != TLSEXT_NAMETYPE_host_name) 1537 return (NULL); 1538 1539 return (s->session && !s->tlsext_hostname ? 1540 s->session->tlsext_hostname : 1541 s->tlsext_hostname); 1542} 1543 1544int 1545SSL_get_servername_type(const SSL *s) 1546{ 1547 if (s->session && 1548 (!s->tlsext_hostname ? 1549 s->session->tlsext_hostname : s->tlsext_hostname)) 1550 return (TLSEXT_NAMETYPE_host_name); 1551 return (-1); 1552} 1553 1554/* 1555 * SSL_select_next_proto implements standard protocol selection. It is 1556 * expected that this function is called from the callback set by 1557 * SSL_CTX_set_alpn_select_cb. 1558 * 1559 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1560 * strings. The length byte itself is not included in the length. A byte 1561 * string of length 0 is invalid. No byte string may be truncated. 1562 * 1563 * It returns either: 1564 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1565 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1566 */ 1567int 1568SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1569 const unsigned char *server, unsigned int server_len, 1570 const unsigned char *client, unsigned int client_len) 1571{ 1572 unsigned int i, j; 1573 const unsigned char *result; 1574 int status = OPENSSL_NPN_UNSUPPORTED; 1575 1576 /* 1577 * For each protocol in server preference order, 1578 * see if we support it. 1579 */ 1580 for (i = 0; i < server_len; ) { 1581 for (j = 0; j < client_len; ) { 1582 if (server[i] == client[j] && 1583 memcmp(&server[i + 1], 1584 &client[j + 1], server[i]) == 0) { 1585 /* We found a match */ 1586 result = &server[i]; 1587 status = OPENSSL_NPN_NEGOTIATED; 1588 goto found; 1589 } 1590 j += client[j]; 1591 j++; 1592 } 1593 i += server[i]; 1594 i++; 1595 } 1596 1597 /* There's no overlap between our protocols and the server's list. */ 1598 result = client; 1599 status = OPENSSL_NPN_NO_OVERLAP; 1600 1601found: 1602 *out = (unsigned char *) result + 1; 1603 *outlen = result[0]; 1604 return (status); 1605} 1606 1607/* SSL_get0_next_proto_negotiated is deprecated. */ 1608void 1609SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1610 unsigned *len) 1611{ 1612 *data = NULL; 1613 *len = 0; 1614} 1615 1616/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1617void 1618SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1619 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1620{ 1621} 1622 1623/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1624void 1625SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1626 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1627 unsigned int inlen, void *arg), void *arg) 1628{ 1629} 1630 1631/* 1632 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1633 * protocols, which must be in wire-format (i.e. a series of non-empty, 1634 * 8-bit length-prefixed strings). Returns 0 on success. 1635 */ 1636int 1637SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1638 unsigned int protos_len) 1639{ 1640 int failed = 1; 1641 1642 if (protos == NULL || protos_len == 0) 1643 goto err; 1644 1645 free(ctx->internal->alpn_client_proto_list); 1646 ctx->internal->alpn_client_proto_list = NULL; 1647 ctx->internal->alpn_client_proto_list_len = 0; 1648 1649 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1650 == NULL) 1651 goto err; 1652 ctx->internal->alpn_client_proto_list_len = protos_len; 1653 1654 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1655 1656 failed = 0; 1657 1658 err: 1659 /* NOTE: Return values are the reverse of what you expect. */ 1660 return (failed); 1661} 1662 1663/* 1664 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1665 * protocols, which must be in wire-format (i.e. a series of non-empty, 1666 * 8-bit length-prefixed strings). Returns 0 on success. 1667 */ 1668int 1669SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1670 unsigned int protos_len) 1671{ 1672 int failed = 1; 1673 1674 if (protos == NULL || protos_len == 0) 1675 goto err; 1676 1677 free(ssl->internal->alpn_client_proto_list); 1678 ssl->internal->alpn_client_proto_list = NULL; 1679 ssl->internal->alpn_client_proto_list_len = 0; 1680 1681 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1682 == NULL) 1683 goto err; 1684 ssl->internal->alpn_client_proto_list_len = protos_len; 1685 1686 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1687 1688 failed = 0; 1689 1690 err: 1691 /* NOTE: Return values are the reverse of what you expect. */ 1692 return (failed); 1693} 1694 1695/* 1696 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1697 * ClientHello processing in order to select an ALPN protocol from the 1698 * client's list of offered protocols. 1699 */ 1700void 1701SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1702 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1703 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1704{ 1705 ctx->internal->alpn_select_cb = cb; 1706 ctx->internal->alpn_select_cb_arg = arg; 1707} 1708 1709/* 1710 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1711 * it sets data to point to len bytes of protocol name (not including the 1712 * leading length-prefix byte). If the server didn't respond with* a negotiated 1713 * protocol then len will be zero. 1714 */ 1715void 1716SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1717 unsigned *len) 1718{ 1719 *data = NULL; 1720 *len = 0; 1721 1722 if (ssl->s3 != NULL) { 1723 *data = ssl->s3->internal->alpn_selected; 1724 *len = ssl->s3->internal->alpn_selected_len; 1725 } 1726} 1727 1728int 1729SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1730 const char *label, size_t llen, const unsigned char *p, size_t plen, 1731 int use_context) 1732{ 1733 return (tls1_export_keying_material(s, out, olen, 1734 label, llen, p, plen, use_context)); 1735} 1736 1737static unsigned long 1738ssl_session_hash(const SSL_SESSION *a) 1739{ 1740 unsigned long l; 1741 1742 l = (unsigned long) 1743 ((unsigned int) a->session_id[0] )| 1744 ((unsigned int) a->session_id[1]<< 8L)| 1745 ((unsigned long)a->session_id[2]<<16L)| 1746 ((unsigned long)a->session_id[3]<<24L); 1747 return (l); 1748} 1749 1750/* 1751 * NB: If this function (or indeed the hash function which uses a sort of 1752 * coarser function than this one) is changed, ensure 1753 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1754 * able to construct an SSL_SESSION that will collide with any existing session 1755 * with a matching session ID. 1756 */ 1757static int 1758ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1759{ 1760 if (a->ssl_version != b->ssl_version) 1761 return (1); 1762 if (a->session_id_length != b->session_id_length) 1763 return (1); 1764 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1765 return (1); 1766 return (0); 1767} 1768 1769/* 1770 * These wrapper functions should remain rather than redeclaring 1771 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1772 * variable. The reason is that the functions aren't static, they're exposed via 1773 * ssl.h. 1774 */ 1775static unsigned long 1776ssl_session_LHASH_HASH(const void *arg) 1777{ 1778 const SSL_SESSION *a = arg; 1779 1780 return ssl_session_hash(a); 1781} 1782 1783static int 1784ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1785{ 1786 const SSL_SESSION *a = arg1; 1787 const SSL_SESSION *b = arg2; 1788 1789 return ssl_session_cmp(a, b); 1790} 1791 1792SSL_CTX * 1793SSL_CTX_new(const SSL_METHOD *meth) 1794{ 1795 SSL_CTX *ret; 1796 1797 if (!OPENSSL_init_ssl(0, NULL)) { 1798 SSLerrorx(SSL_R_LIBRARY_BUG); 1799 return (NULL); 1800 } 1801 1802 if (meth == NULL) { 1803 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1804 return (NULL); 1805 } 1806 1807 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1808 SSLerrorx(ERR_R_MALLOC_FAILURE); 1809 return (NULL); 1810 } 1811 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1812 free(ret); 1813 SSLerrorx(ERR_R_MALLOC_FAILURE); 1814 return (NULL); 1815 } 1816 1817 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1818 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1819 goto err; 1820 } 1821 1822 ret->method = meth; 1823 ret->internal->min_version = meth->internal->min_version; 1824 ret->internal->max_version = meth->internal->max_version; 1825 1826 ret->cert_store = NULL; 1827 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1828 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1829 ret->internal->session_cache_head = NULL; 1830 ret->internal->session_cache_tail = NULL; 1831 1832 /* We take the system default */ 1833 ret->session_timeout = meth->internal->get_timeout(); 1834 1835 ret->internal->new_session_cb = 0; 1836 ret->internal->remove_session_cb = 0; 1837 ret->internal->get_session_cb = 0; 1838 ret->internal->generate_session_id = 0; 1839 1840 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1841 1842 ret->references = 1; 1843 ret->internal->quiet_shutdown = 0; 1844 1845 ret->internal->info_callback = NULL; 1846 1847 ret->internal->app_verify_callback = 0; 1848 ret->internal->app_verify_arg = NULL; 1849 1850 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1851 ret->internal->read_ahead = 0; 1852 ret->internal->msg_callback = 0; 1853 ret->internal->msg_callback_arg = NULL; 1854 ret->verify_mode = SSL_VERIFY_NONE; 1855 ret->sid_ctx_length = 0; 1856 ret->internal->default_verify_callback = NULL; 1857 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1858 goto err; 1859 1860 ret->default_passwd_callback = 0; 1861 ret->default_passwd_callback_userdata = NULL; 1862 ret->internal->client_cert_cb = 0; 1863 ret->internal->app_gen_cookie_cb = 0; 1864 ret->internal->app_verify_cookie_cb = 0; 1865 1866 ret->internal->sessions = lh_SSL_SESSION_new(); 1867 if (ret->internal->sessions == NULL) 1868 goto err; 1869 ret->cert_store = X509_STORE_new(); 1870 if (ret->cert_store == NULL) 1871 goto err; 1872 1873 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1874 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1875 if (ret->cipher_list == NULL || 1876 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1877 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1878 goto err2; 1879 } 1880 1881 ret->param = X509_VERIFY_PARAM_new(); 1882 if (!ret->param) 1883 goto err; 1884 1885 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1886 goto err; 1887 1888 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1889 1890 ret->extra_certs = NULL; 1891 1892 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1893 1894 ret->internal->tlsext_servername_callback = 0; 1895 ret->internal->tlsext_servername_arg = NULL; 1896 1897 /* Setup RFC4507 ticket keys */ 1898 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1899 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1900 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1901 1902 ret->internal->tlsext_status_cb = 0; 1903 ret->internal->tlsext_status_arg = NULL; 1904 1905#ifndef OPENSSL_NO_ENGINE 1906 ret->internal->client_cert_engine = NULL; 1907#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1908#define eng_strx(x) #x 1909#define eng_str(x) eng_strx(x) 1910 /* Use specific client engine automatically... ignore errors */ 1911 { 1912 ENGINE *eng; 1913 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1914 if (!eng) { 1915 ERR_clear_error(); 1916 ENGINE_load_builtin_engines(); 1917 eng = ENGINE_by_id(eng_str( 1918 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1919 } 1920 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1921 ERR_clear_error(); 1922 } 1923#endif 1924#endif 1925 /* 1926 * Default is to connect to non-RI servers. When RI is more widely 1927 * deployed might change this. 1928 */ 1929 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1930 1931 return (ret); 1932err: 1933 SSLerrorx(ERR_R_MALLOC_FAILURE); 1934err2: 1935 SSL_CTX_free(ret); 1936 return (NULL); 1937} 1938 1939void 1940SSL_CTX_free(SSL_CTX *ctx) 1941{ 1942 int i; 1943 1944 if (ctx == NULL) 1945 return; 1946 1947 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1948 if (i > 0) 1949 return; 1950 1951 X509_VERIFY_PARAM_free(ctx->param); 1952 1953 /* 1954 * Free internal session cache. However: the remove_cb() may reference 1955 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1956 * after the sessions were flushed. 1957 * As the ex_data handling routines might also touch the session cache, 1958 * the most secure solution seems to be: empty (flush) the cache, then 1959 * free ex_data, then finally free the cache. 1960 * (See ticket [openssl.org #212].) 1961 */ 1962 if (ctx->internal->sessions != NULL) 1963 SSL_CTX_flush_sessions(ctx, 0); 1964 1965 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1966 1967 lh_SSL_SESSION_free(ctx->internal->sessions); 1968 1969 X509_STORE_free(ctx->cert_store); 1970 sk_SSL_CIPHER_free(ctx->cipher_list); 1971 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1972 ssl_cert_free(ctx->internal->cert); 1973 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1974 sk_X509_pop_free(ctx->extra_certs, X509_free); 1975 1976#ifndef OPENSSL_NO_SRTP 1977 if (ctx->internal->srtp_profiles) 1978 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1979#endif 1980 1981#ifndef OPENSSL_NO_ENGINE 1982 ENGINE_finish(ctx->internal->client_cert_engine); 1983#endif 1984 1985 free(ctx->internal->tlsext_ecpointformatlist); 1986 free(ctx->internal->tlsext_supportedgroups); 1987 1988 free(ctx->internal->alpn_client_proto_list); 1989 1990 free(ctx->internal); 1991 free(ctx); 1992} 1993 1994int 1995SSL_CTX_up_ref(SSL_CTX *ctx) 1996{ 1997 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1998 return ((refs > 1) ? 1 : 0); 1999} 2000 2001pem_password_cb * 2002SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2003{ 2004 return (ctx->default_passwd_callback); 2005} 2006 2007void 2008SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2009{ 2010 ctx->default_passwd_callback = cb; 2011} 2012 2013void * 2014SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2015{ 2016 return ctx->default_passwd_callback_userdata; 2017} 2018 2019void 2020SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2021{ 2022 ctx->default_passwd_callback_userdata = u; 2023} 2024 2025void 2026SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2027 void *), void *arg) 2028{ 2029 ctx->internal->app_verify_callback = cb; 2030 ctx->internal->app_verify_arg = arg; 2031} 2032 2033void 2034SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2035{ 2036 ctx->verify_mode = mode; 2037 ctx->internal->default_verify_callback = cb; 2038} 2039 2040void 2041SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2042{ 2043 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2044} 2045 2046void 2047ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2048{ 2049 int rsa_enc, rsa_sign, dh_tmp; 2050 int have_ecc_cert; 2051 unsigned long mask_k, mask_a; 2052 X509 *x = NULL; 2053 CERT_PKEY *cpk; 2054 2055 if (c == NULL) 2056 return; 2057 2058 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2059 c->dh_tmp_auto != 0); 2060 2061 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2062 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2063 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2064 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2065 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2066 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2067 2068 mask_k = 0; 2069 mask_a = 0; 2070 2071 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2072 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2073 mask_k |= SSL_kGOST; 2074 mask_a |= SSL_aGOST01; 2075 } 2076 2077 if (rsa_enc) 2078 mask_k |= SSL_kRSA; 2079 2080 if (dh_tmp) 2081 mask_k |= SSL_kDHE; 2082 2083 if (rsa_enc || rsa_sign) 2084 mask_a |= SSL_aRSA; 2085 2086 mask_a |= SSL_aNULL; 2087 2088 /* 2089 * An ECC certificate may be usable for ECDH and/or 2090 * ECDSA cipher suites depending on the key usage extension. 2091 */ 2092 if (have_ecc_cert) { 2093 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2094 2095 /* This call populates extension flags (ex_flags). */ 2096 X509_check_purpose(x, -1, 0); 2097 2098 /* Key usage, if present, must allow signing. */ 2099 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2100 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2101 mask_a |= SSL_aECDSA; 2102 } 2103 2104 mask_k |= SSL_kECDHE; 2105 2106 c->mask_k = mask_k; 2107 c->mask_a = mask_a; 2108 c->valid = 1; 2109} 2110 2111/* See if this handshake is using an ECC cipher suite. */ 2112int 2113ssl_using_ecc_cipher(SSL *s) 2114{ 2115 unsigned long alg_a, alg_k; 2116 2117 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2118 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2119 2120 return SSI(s)->tlsext_ecpointformatlist != NULL && 2121 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2122 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2123} 2124 2125int 2126ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2127{ 2128 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2129 unsigned long alg_a; 2130 2131 alg_a = cs->algorithm_auth; 2132 2133 if (alg_a & SSL_aECDSA) { 2134 /* This call populates extension flags (ex_flags). */ 2135 X509_check_purpose(x, -1, 0); 2136 2137 /* Key usage, if present, must allow signing. */ 2138 if ((x->ex_flags & EXFLAG_KUSAGE) && 2139 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2140 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2141 return (0); 2142 } 2143 } 2144 2145 return (1); 2146} 2147 2148CERT_PKEY * 2149ssl_get_server_send_pkey(const SSL *s) 2150{ 2151 unsigned long alg_a; 2152 CERT *c; 2153 int i; 2154 2155 c = s->cert; 2156 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2157 2158 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2159 2160 if (alg_a & SSL_aECDSA) { 2161 i = SSL_PKEY_ECC; 2162 } else if (alg_a & SSL_aRSA) { 2163 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2164 i = SSL_PKEY_RSA_SIGN; 2165 else 2166 i = SSL_PKEY_RSA_ENC; 2167 } else if (alg_a & SSL_aGOST01) { 2168 i = SSL_PKEY_GOST01; 2169 } else { /* if (alg_a & SSL_aNULL) */ 2170 SSLerror(s, ERR_R_INTERNAL_ERROR); 2171 return (NULL); 2172 } 2173 2174 return (c->pkeys + i); 2175} 2176 2177X509 * 2178ssl_get_server_send_cert(const SSL *s) 2179{ 2180 CERT_PKEY *cpk; 2181 2182 cpk = ssl_get_server_send_pkey(s); 2183 if (!cpk) 2184 return (NULL); 2185 return (cpk->x509); 2186} 2187 2188EVP_PKEY * 2189ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2190{ 2191 unsigned long alg_a; 2192 CERT *c; 2193 int idx = -1; 2194 2195 alg_a = cipher->algorithm_auth; 2196 c = s->cert; 2197 2198 if (alg_a & SSL_aRSA) { 2199 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2200 idx = SSL_PKEY_RSA_SIGN; 2201 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2202 idx = SSL_PKEY_RSA_ENC; 2203 } else if ((alg_a & SSL_aECDSA) && 2204 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2205 idx = SSL_PKEY_ECC; 2206 if (idx == -1) { 2207 SSLerror(s, ERR_R_INTERNAL_ERROR); 2208 return (NULL); 2209 } 2210 if (pmd) 2211 *pmd = c->pkeys[idx].digest; 2212 return (c->pkeys[idx].privatekey); 2213} 2214 2215DH * 2216ssl_get_auto_dh(SSL *s) 2217{ 2218 CERT_PKEY *cpk; 2219 int keylen; 2220 DH *dhp; 2221 2222 if (s->cert->dh_tmp_auto == 2) { 2223 keylen = 1024; 2224 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2225 keylen = 1024; 2226 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2227 keylen = 3072; 2228 } else { 2229 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2230 return (NULL); 2231 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2232 return (NULL); 2233 keylen = EVP_PKEY_bits(cpk->privatekey); 2234 } 2235 2236 if ((dhp = DH_new()) == NULL) 2237 return (NULL); 2238 2239 dhp->g = BN_new(); 2240 if (dhp->g != NULL) 2241 BN_set_word(dhp->g, 2); 2242 2243 if (keylen >= 8192) 2244 dhp->p = get_rfc3526_prime_8192(NULL); 2245 else if (keylen >= 4096) 2246 dhp->p = get_rfc3526_prime_4096(NULL); 2247 else if (keylen >= 3072) 2248 dhp->p = get_rfc3526_prime_3072(NULL); 2249 else if (keylen >= 2048) 2250 dhp->p = get_rfc3526_prime_2048(NULL); 2251 else if (keylen >= 1536) 2252 dhp->p = get_rfc3526_prime_1536(NULL); 2253 else 2254 dhp->p = get_rfc2409_prime_1024(NULL); 2255 2256 if (dhp->p == NULL || dhp->g == NULL) { 2257 DH_free(dhp); 2258 return (NULL); 2259 } 2260 return (dhp); 2261} 2262 2263void 2264ssl_update_cache(SSL *s, int mode) 2265{ 2266 int i; 2267 2268 /* 2269 * If the session_id_length is 0, we are not supposed to cache it, 2270 * and it would be rather hard to do anyway :-) 2271 */ 2272 if (s->session->session_id_length == 0) 2273 return; 2274 2275 i = s->session_ctx->internal->session_cache_mode; 2276 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2277 || SSL_CTX_add_session(s->session_ctx, s->session)) 2278 && (s->session_ctx->internal->new_session_cb != NULL)) { 2279 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2280 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2281 SSL_SESSION_free(s->session); 2282 } 2283 2284 /* auto flush every 255 connections */ 2285 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2286 ((i & mode) == mode)) { 2287 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2288 s->session_ctx->internal->stats.sess_connect_good : 2289 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2290 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2291 } 2292 } 2293} 2294 2295const SSL_METHOD * 2296SSL_get_ssl_method(SSL *s) 2297{ 2298 return (s->method); 2299} 2300 2301int 2302SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2303{ 2304 int conn = -1; 2305 int ret = 1; 2306 2307 if (s->method != meth) { 2308 if (s->internal->handshake_func != NULL) 2309 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2310 2311 if (s->method->internal->version == meth->internal->version) 2312 s->method = meth; 2313 else { 2314 s->method->internal->ssl_free(s); 2315 s->method = meth; 2316 ret = s->method->internal->ssl_new(s); 2317 } 2318 2319 if (conn == 1) 2320 s->internal->handshake_func = meth->internal->ssl_connect; 2321 else if (conn == 0) 2322 s->internal->handshake_func = meth->internal->ssl_accept; 2323 } 2324 return (ret); 2325} 2326 2327int 2328SSL_get_error(const SSL *s, int i) 2329{ 2330 int reason; 2331 unsigned long l; 2332 BIO *bio; 2333 2334 if (i > 0) 2335 return (SSL_ERROR_NONE); 2336 2337 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2338 * etc, where we do encode the error */ 2339 if ((l = ERR_peek_error()) != 0) { 2340 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2341 return (SSL_ERROR_SYSCALL); 2342 else 2343 return (SSL_ERROR_SSL); 2344 } 2345 2346 if ((i < 0) && SSL_want_read(s)) { 2347 bio = SSL_get_rbio(s); 2348 if (BIO_should_read(bio)) { 2349 return (SSL_ERROR_WANT_READ); 2350 } else if (BIO_should_write(bio)) { 2351 /* 2352 * This one doesn't make too much sense... We never 2353 * try to write to the rbio, and an application 2354 * program where rbio and wbio are separate couldn't 2355 * even know what it should wait for. However if we 2356 * ever set s->internal->rwstate incorrectly (so that we have 2357 * SSL_want_read(s) instead of SSL_want_write(s)) 2358 * and rbio and wbio *are* the same, this test works 2359 * around that bug; so it might be safer to keep it. 2360 */ 2361 return (SSL_ERROR_WANT_WRITE); 2362 } else if (BIO_should_io_special(bio)) { 2363 reason = BIO_get_retry_reason(bio); 2364 if (reason == BIO_RR_CONNECT) 2365 return (SSL_ERROR_WANT_CONNECT); 2366 else if (reason == BIO_RR_ACCEPT) 2367 return (SSL_ERROR_WANT_ACCEPT); 2368 else 2369 return (SSL_ERROR_SYSCALL); /* unknown */ 2370 } 2371 } 2372 2373 if ((i < 0) && SSL_want_write(s)) { 2374 bio = SSL_get_wbio(s); 2375 if (BIO_should_write(bio)) { 2376 return (SSL_ERROR_WANT_WRITE); 2377 } else if (BIO_should_read(bio)) { 2378 /* 2379 * See above (SSL_want_read(s) with 2380 * BIO_should_write(bio)) 2381 */ 2382 return (SSL_ERROR_WANT_READ); 2383 } else if (BIO_should_io_special(bio)) { 2384 reason = BIO_get_retry_reason(bio); 2385 if (reason == BIO_RR_CONNECT) 2386 return (SSL_ERROR_WANT_CONNECT); 2387 else if (reason == BIO_RR_ACCEPT) 2388 return (SSL_ERROR_WANT_ACCEPT); 2389 else 2390 return (SSL_ERROR_SYSCALL); 2391 } 2392 } 2393 if ((i < 0) && SSL_want_x509_lookup(s)) { 2394 return (SSL_ERROR_WANT_X509_LOOKUP); 2395 } 2396 2397 if (i == 0) { 2398 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2399 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2400 return (SSL_ERROR_ZERO_RETURN); 2401 } 2402 return (SSL_ERROR_SYSCALL); 2403} 2404 2405int 2406SSL_do_handshake(SSL *s) 2407{ 2408 int ret = 1; 2409 2410 if (s->internal->handshake_func == NULL) { 2411 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2412 return (-1); 2413 } 2414 2415 s->method->internal->ssl_renegotiate_check(s); 2416 2417 if (SSL_in_init(s) || SSL_in_before(s)) { 2418 ret = s->internal->handshake_func(s); 2419 } 2420 return (ret); 2421} 2422 2423/* 2424 * For the next 2 functions, SSL_clear() sets shutdown and so 2425 * one of these calls will reset it 2426 */ 2427void 2428SSL_set_accept_state(SSL *s) 2429{ 2430 s->server = 1; 2431 s->internal->shutdown = 0; 2432 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2433 s->internal->handshake_func = s->method->internal->ssl_accept; 2434 /* clear the current cipher */ 2435 ssl_clear_cipher_ctx(s); 2436 ssl_clear_hash_ctx(&s->read_hash); 2437 ssl_clear_hash_ctx(&s->internal->write_hash); 2438} 2439 2440void 2441SSL_set_connect_state(SSL *s) 2442{ 2443 s->server = 0; 2444 s->internal->shutdown = 0; 2445 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2446 s->internal->handshake_func = s->method->internal->ssl_connect; 2447 /* clear the current cipher */ 2448 ssl_clear_cipher_ctx(s); 2449 ssl_clear_hash_ctx(&s->read_hash); 2450 ssl_clear_hash_ctx(&s->internal->write_hash); 2451} 2452 2453int 2454ssl_undefined_function(SSL *s) 2455{ 2456 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2457 return (0); 2458} 2459 2460int 2461ssl_undefined_void_function(void) 2462{ 2463 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2464 return (0); 2465} 2466 2467int 2468ssl_undefined_const_function(const SSL *s) 2469{ 2470 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2471 return (0); 2472} 2473 2474const char * 2475ssl_version_string(int ver) 2476{ 2477 switch (ver) { 2478 case DTLS1_VERSION: 2479 return (SSL_TXT_DTLS1); 2480 case TLS1_VERSION: 2481 return (SSL_TXT_TLSV1); 2482 case TLS1_1_VERSION: 2483 return (SSL_TXT_TLSV1_1); 2484 case TLS1_2_VERSION: 2485 return (SSL_TXT_TLSV1_2); 2486 default: 2487 return ("unknown"); 2488 } 2489} 2490 2491const char * 2492SSL_get_version(const SSL *s) 2493{ 2494 return ssl_version_string(s->version); 2495} 2496 2497SSL * 2498SSL_dup(SSL *s) 2499{ 2500 STACK_OF(X509_NAME) *sk; 2501 X509_NAME *xn; 2502 SSL *ret; 2503 int i; 2504 2505 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2506 goto err; 2507 2508 ret->version = s->version; 2509 ret->internal->type = s->internal->type; 2510 ret->method = s->method; 2511 2512 if (s->session != NULL) { 2513 if (!SSL_copy_session_id(ret, s)) 2514 goto err; 2515 } else { 2516 /* 2517 * No session has been established yet, so we have to expect 2518 * that s->cert or ret->cert will be changed later -- 2519 * they should not both point to the same object, 2520 * and thus we can't use SSL_copy_session_id. 2521 */ 2522 2523 ret->method->internal->ssl_free(ret); 2524 ret->method = s->method; 2525 ret->method->internal->ssl_new(ret); 2526 2527 if (s->cert != NULL) { 2528 ssl_cert_free(ret->cert); 2529 ret->cert = ssl_cert_dup(s->cert); 2530 if (ret->cert == NULL) 2531 goto err; 2532 } 2533 2534 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2535 s->sid_ctx_length)) 2536 goto err; 2537 } 2538 2539 ret->internal->options = s->internal->options; 2540 ret->internal->mode = s->internal->mode; 2541 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2542 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2543 ret->internal->msg_callback = s->internal->msg_callback; 2544 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2545 SSL_set_verify(ret, SSL_get_verify_mode(s), 2546 SSL_get_verify_callback(s)); 2547 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2548 ret->internal->generate_session_id = s->internal->generate_session_id; 2549 2550 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2551 2552 ret->internal->debug = s->internal->debug; 2553 2554 /* copy app data, a little dangerous perhaps */ 2555 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2556 &ret->internal->ex_data, &s->internal->ex_data)) 2557 goto err; 2558 2559 /* setup rbio, and wbio */ 2560 if (s->rbio != NULL) { 2561 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2562 goto err; 2563 } 2564 if (s->wbio != NULL) { 2565 if (s->wbio != s->rbio) { 2566 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2567 goto err; 2568 } else 2569 ret->wbio = ret->rbio; 2570 } 2571 ret->internal->rwstate = s->internal->rwstate; 2572 ret->internal->in_handshake = s->internal->in_handshake; 2573 ret->internal->handshake_func = s->internal->handshake_func; 2574 ret->server = s->server; 2575 ret->internal->renegotiate = s->internal->renegotiate; 2576 ret->internal->new_session = s->internal->new_session; 2577 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2578 ret->internal->shutdown = s->internal->shutdown; 2579 /* SSL_dup does not really work at any state, though */ 2580 S3I(ret)->hs.state = S3I(s)->hs.state; 2581 ret->internal->rstate = s->internal->rstate; 2582 2583 /* 2584 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2585 * ret->init_off 2586 */ 2587 ret->internal->init_num = 0; 2588 2589 ret->internal->hit = s->internal->hit; 2590 2591 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2592 2593 /* dup the cipher_list and cipher_list_by_id stacks */ 2594 if (s->cipher_list != NULL) { 2595 if ((ret->cipher_list = 2596 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2597 goto err; 2598 } 2599 if (s->internal->cipher_list_by_id != NULL) { 2600 if ((ret->internal->cipher_list_by_id = 2601 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2602 goto err; 2603 } 2604 2605 /* Dup the client_CA list */ 2606 if (s->internal->client_CA != NULL) { 2607 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2608 ret->internal->client_CA = sk; 2609 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2610 xn = sk_X509_NAME_value(sk, i); 2611 if (sk_X509_NAME_set(sk, i, 2612 X509_NAME_dup(xn)) == NULL) { 2613 X509_NAME_free(xn); 2614 goto err; 2615 } 2616 } 2617 } 2618 2619 return ret; 2620 err: 2621 SSL_free(ret); 2622 return NULL; 2623} 2624 2625void 2626ssl_clear_cipher_ctx(SSL *s) 2627{ 2628 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2629 s->enc_read_ctx = NULL; 2630 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2631 s->internal->enc_write_ctx = NULL; 2632 2633 if (s->internal->aead_read_ctx != NULL) { 2634 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2635 free(s->internal->aead_read_ctx); 2636 s->internal->aead_read_ctx = NULL; 2637 } 2638 if (s->internal->aead_write_ctx != NULL) { 2639 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2640 free(s->internal->aead_write_ctx); 2641 s->internal->aead_write_ctx = NULL; 2642 } 2643 2644} 2645 2646/* Fix this function so that it takes an optional type parameter */ 2647X509 * 2648SSL_get_certificate(const SSL *s) 2649{ 2650 if (s->cert != NULL) 2651 return (s->cert->key->x509); 2652 else 2653 return (NULL); 2654} 2655 2656/* Fix this function so that it takes an optional type parameter */ 2657EVP_PKEY * 2658SSL_get_privatekey(const SSL *s) 2659{ 2660 if (s->cert != NULL) 2661 return (s->cert->key->privatekey); 2662 else 2663 return (NULL); 2664} 2665 2666const SSL_CIPHER * 2667SSL_get_current_cipher(const SSL *s) 2668{ 2669 if ((s->session != NULL) && (s->session->cipher != NULL)) 2670 return (s->session->cipher); 2671 return (NULL); 2672} 2673const void * 2674SSL_get_current_compression(SSL *s) 2675{ 2676 return (NULL); 2677} 2678 2679const void * 2680SSL_get_current_expansion(SSL *s) 2681{ 2682 return (NULL); 2683} 2684 2685size_t 2686SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2687{ 2688 size_t len = sizeof(s->s3->client_random); 2689 2690 if (out == NULL) 2691 return len; 2692 2693 if (len > max_out) 2694 len = max_out; 2695 2696 memcpy(out, s->s3->client_random, len); 2697 2698 return len; 2699} 2700 2701size_t 2702SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2703{ 2704 size_t len = sizeof(s->s3->server_random); 2705 2706 if (out == NULL) 2707 return len; 2708 2709 if (len > max_out) 2710 len = max_out; 2711 2712 memcpy(out, s->s3->server_random, len); 2713 2714 return len; 2715} 2716 2717int 2718ssl_init_wbio_buffer(SSL *s, int push) 2719{ 2720 BIO *bbio; 2721 2722 if (s->bbio == NULL) { 2723 bbio = BIO_new(BIO_f_buffer()); 2724 if (bbio == NULL) 2725 return (0); 2726 s->bbio = bbio; 2727 } else { 2728 bbio = s->bbio; 2729 if (s->bbio == s->wbio) 2730 s->wbio = BIO_pop(s->wbio); 2731 } 2732 (void)BIO_reset(bbio); 2733/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2734 if (!BIO_set_read_buffer_size(bbio, 1)) { 2735 SSLerror(s, ERR_R_BUF_LIB); 2736 return (0); 2737 } 2738 if (push) { 2739 if (s->wbio != bbio) 2740 s->wbio = BIO_push(bbio, s->wbio); 2741 } else { 2742 if (s->wbio == bbio) 2743 s->wbio = BIO_pop(bbio); 2744 } 2745 return (1); 2746} 2747 2748void 2749ssl_free_wbio_buffer(SSL *s) 2750{ 2751 if (s == NULL) 2752 return; 2753 2754 if (s->bbio == NULL) 2755 return; 2756 2757 if (s->bbio == s->wbio) { 2758 /* remove buffering */ 2759 s->wbio = BIO_pop(s->wbio); 2760 } 2761 BIO_free(s->bbio); 2762 s->bbio = NULL; 2763} 2764 2765void 2766SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2767{ 2768 ctx->internal->quiet_shutdown = mode; 2769} 2770 2771int 2772SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2773{ 2774 return (ctx->internal->quiet_shutdown); 2775} 2776 2777void 2778SSL_set_quiet_shutdown(SSL *s, int mode) 2779{ 2780 s->internal->quiet_shutdown = mode; 2781} 2782 2783int 2784SSL_get_quiet_shutdown(const SSL *s) 2785{ 2786 return (s->internal->quiet_shutdown); 2787} 2788 2789void 2790SSL_set_shutdown(SSL *s, int mode) 2791{ 2792 s->internal->shutdown = mode; 2793} 2794 2795int 2796SSL_get_shutdown(const SSL *s) 2797{ 2798 return (s->internal->shutdown); 2799} 2800 2801int 2802SSL_version(const SSL *s) 2803{ 2804 return (s->version); 2805} 2806 2807SSL_CTX * 2808SSL_get_SSL_CTX(const SSL *ssl) 2809{ 2810 return (ssl->ctx); 2811} 2812 2813SSL_CTX * 2814SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2815{ 2816 CERT *ocert = ssl->cert; 2817 2818 if (ssl->ctx == ctx) 2819 return (ssl->ctx); 2820 if (ctx == NULL) 2821 ctx = ssl->initial_ctx; 2822 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2823 if (ocert != NULL) { 2824 int i; 2825 /* Copy negotiated digests from original certificate. */ 2826 for (i = 0; i < SSL_PKEY_NUM; i++) 2827 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2828 ssl_cert_free(ocert); 2829 } 2830 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2831 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2832 ssl->ctx = ctx; 2833 return (ssl->ctx); 2834} 2835 2836int 2837SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2838{ 2839 return (X509_STORE_set_default_paths(ctx->cert_store)); 2840} 2841 2842int 2843SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2844 const char *CApath) 2845{ 2846 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2847} 2848 2849int 2850SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2851{ 2852 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2853} 2854 2855void 2856SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2857{ 2858 ssl->internal->info_callback = cb; 2859} 2860 2861void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2862{ 2863 return (ssl->internal->info_callback); 2864} 2865 2866int 2867SSL_state(const SSL *ssl) 2868{ 2869 return (S3I(ssl)->hs.state); 2870} 2871 2872void 2873SSL_set_state(SSL *ssl, int state) 2874{ 2875 S3I(ssl)->hs.state = state; 2876} 2877 2878void 2879SSL_set_verify_result(SSL *ssl, long arg) 2880{ 2881 ssl->verify_result = arg; 2882} 2883 2884long 2885SSL_get_verify_result(const SSL *ssl) 2886{ 2887 return (ssl->verify_result); 2888} 2889 2890int 2891SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2892 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2893{ 2894 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2895 new_func, dup_func, free_func)); 2896} 2897 2898int 2899SSL_set_ex_data(SSL *s, int idx, void *arg) 2900{ 2901 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2902} 2903 2904void * 2905SSL_get_ex_data(const SSL *s, int idx) 2906{ 2907 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2908} 2909 2910int 2911SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2912 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2913{ 2914 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2915 new_func, dup_func, free_func)); 2916} 2917 2918int 2919SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2920{ 2921 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2922} 2923 2924void * 2925SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2926{ 2927 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2928} 2929 2930int 2931ssl_ok(SSL *s) 2932{ 2933 return (1); 2934} 2935 2936X509_STORE * 2937SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2938{ 2939 return (ctx->cert_store); 2940} 2941 2942void 2943SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2944{ 2945 X509_STORE_free(ctx->cert_store); 2946 ctx->cert_store = store; 2947} 2948 2949X509 * 2950SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2951{ 2952 if (ctx->internal->cert == NULL) 2953 return NULL; 2954 2955 return ctx->internal->cert->key->x509; 2956} 2957 2958int 2959SSL_want(const SSL *s) 2960{ 2961 return (s->internal->rwstate); 2962} 2963 2964void 2965SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2966 int keylength)) 2967{ 2968 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2969} 2970 2971void 2972SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2973 int keylength)) 2974{ 2975 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2976} 2977 2978void 2979SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2980 int keylength)) 2981{ 2982 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2983} 2984 2985void 2986SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2987 int keylength)) 2988{ 2989 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2990} 2991 2992void 2993SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2994 int is_export, int keylength)) 2995{ 2996 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2997 (void (*)(void))ecdh); 2998} 2999 3000void 3001SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3002 int keylength)) 3003{ 3004 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3005} 3006 3007 3008void 3009SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3010 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3011{ 3012 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3013 (void (*)(void))cb); 3014} 3015 3016void 3017SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3018 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3019{ 3020 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3021} 3022 3023void 3024ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3025{ 3026 if (*hash) 3027 EVP_MD_CTX_destroy(*hash); 3028 *hash = NULL; 3029} 3030 3031void 3032SSL_set_debug(SSL *s, int debug) 3033{ 3034 s->internal->debug = debug; 3035} 3036 3037int 3038SSL_cache_hit(SSL *s) 3039{ 3040 return (s->internal->hit); 3041} 3042 3043int 3044SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3045{ 3046 return ctx->internal->min_version; 3047} 3048 3049int 3050SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3051{ 3052 return ssl_version_set_min(ctx->method, version, 3053 ctx->internal->max_version, &ctx->internal->min_version); 3054} 3055 3056int 3057SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3058{ 3059 return ctx->internal->max_version; 3060} 3061 3062int 3063SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3064{ 3065 return ssl_version_set_max(ctx->method, version, 3066 ctx->internal->min_version, &ctx->internal->max_version); 3067} 3068 3069int 3070SSL_get_min_proto_version(SSL *ssl) 3071{ 3072 return ssl->internal->min_version; 3073} 3074 3075int 3076SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3077{ 3078 return ssl_version_set_min(ssl->method, version, 3079 ssl->internal->max_version, &ssl->internal->min_version); 3080} 3081int 3082SSL_get_max_proto_version(SSL *ssl) 3083{ 3084 return ssl->internal->max_version; 3085} 3086 3087int 3088SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3089{ 3090 return ssl_version_set_max(ssl->method, version, 3091 ssl->internal->min_version, &ssl->internal->max_version); 3092} 3093 3094static int 3095ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3096{ 3097 SSL_CIPHER const *a = a_; 3098 SSL_CIPHER const *b = b_; 3099 return ssl_cipher_id_cmp(a, b); 3100} 3101 3102SSL_CIPHER * 3103OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3104{ 3105 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3106 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3107} 3108