ssl_lib.c revision 1.181
1/* $OpenBSD: ssl_lib.c,v 1.181 2018/03/17 15:48:31 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 */ 856void 857SSL_copy_session_id(SSL *t, const SSL *f) 858{ 859 CERT *tmp; 860 861 /* Do we need to to SSL locking? */ 862 SSL_set_session(t, SSL_get_session(f)); 863 864 /* 865 * What if we are setup as SSLv2 but want to talk SSLv3 or 866 * vice-versa. 867 */ 868 if (t->method != f->method) { 869 t->method->internal->ssl_free(t); /* cleanup current */ 870 t->method = f->method; /* change method */ 871 t->method->internal->ssl_new(t); /* setup new */ 872 } 873 874 tmp = t->cert; 875 if (f->cert != NULL) { 876 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 877 t->cert = f->cert; 878 } else 879 t->cert = NULL; 880 ssl_cert_free(tmp); 881 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 882} 883 884/* Fix this so it checks all the valid key/cert options */ 885int 886SSL_CTX_check_private_key(const SSL_CTX *ctx) 887{ 888 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 889 (ctx->internal->cert->key->x509 == NULL)) { 890 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 891 return (0); 892 } 893 if (ctx->internal->cert->key->privatekey == NULL) { 894 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 895 return (0); 896 } 897 return (X509_check_private_key(ctx->internal->cert->key->x509, 898 ctx->internal->cert->key->privatekey)); 899} 900 901/* Fix this function so that it takes an optional type parameter */ 902int 903SSL_check_private_key(const SSL *ssl) 904{ 905 if (ssl == NULL) { 906 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 907 return (0); 908 } 909 if (ssl->cert == NULL) { 910 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->x509 == NULL) { 914 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return (0); 916 } 917 if (ssl->cert->key->privatekey == NULL) { 918 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 919 return (0); 920 } 921 return (X509_check_private_key(ssl->cert->key->x509, 922 ssl->cert->key->privatekey)); 923} 924 925int 926SSL_accept(SSL *s) 927{ 928 if (s->internal->handshake_func == NULL) 929 SSL_set_accept_state(s); /* Not properly initialized yet */ 930 931 return (s->method->internal->ssl_accept(s)); 932} 933 934int 935SSL_connect(SSL *s) 936{ 937 if (s->internal->handshake_func == NULL) 938 SSL_set_connect_state(s); /* Not properly initialized yet */ 939 940 return (s->method->internal->ssl_connect(s)); 941} 942 943int 944SSL_is_server(const SSL *s) 945{ 946 return s->server; 947} 948 949long 950SSL_get_default_timeout(const SSL *s) 951{ 952 return (s->method->internal->get_timeout()); 953} 954 955int 956SSL_read(SSL *s, void *buf, int num) 957{ 958 if (s->internal->handshake_func == NULL) { 959 SSLerror(s, SSL_R_UNINITIALIZED); 960 return (-1); 961 } 962 963 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 964 s->internal->rwstate = SSL_NOTHING; 965 return (0); 966 } 967 return (s->method->internal->ssl_read(s, buf, num)); 968} 969 970int 971SSL_peek(SSL *s, void *buf, int num) 972{ 973 if (s->internal->handshake_func == NULL) { 974 SSLerror(s, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 979 return (0); 980 } 981 return (s->method->internal->ssl_peek(s, buf, num)); 982} 983 984int 985SSL_write(SSL *s, const void *buf, int num) 986{ 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(s, SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 993 s->internal->rwstate = SSL_NOTHING; 994 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 995 return (-1); 996 } 997 return (s->method->internal->ssl_write(s, buf, num)); 998} 999 1000int 1001SSL_shutdown(SSL *s) 1002{ 1003 /* 1004 * Note that this function behaves differently from what one might 1005 * expect. Return values are 0 for no success (yet), 1006 * 1 for success; but calling it once is usually not enough, 1007 * even if blocking I/O is used (see ssl3_shutdown). 1008 */ 1009 1010 if (s->internal->handshake_func == NULL) { 1011 SSLerror(s, SSL_R_UNINITIALIZED); 1012 return (-1); 1013 } 1014 1015 if ((s != NULL) && !SSL_in_init(s)) 1016 return (s->method->internal->ssl_shutdown(s)); 1017 else 1018 return (1); 1019} 1020 1021int 1022SSL_renegotiate(SSL *s) 1023{ 1024 if (s->internal->renegotiate == 0) 1025 s->internal->renegotiate = 1; 1026 1027 s->internal->new_session = 1; 1028 1029 return (s->method->internal->ssl_renegotiate(s)); 1030} 1031 1032int 1033SSL_renegotiate_abbreviated(SSL *s) 1034{ 1035 if (s->internal->renegotiate == 0) 1036 s->internal->renegotiate = 1; 1037 1038 s->internal->new_session = 0; 1039 1040 return (s->method->internal->ssl_renegotiate(s)); 1041} 1042 1043int 1044SSL_renegotiate_pending(SSL *s) 1045{ 1046 /* 1047 * Becomes true when negotiation is requested; 1048 * false again once a handshake has finished. 1049 */ 1050 return (s->internal->renegotiate != 0); 1051} 1052 1053long 1054SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1055{ 1056 long l; 1057 1058 switch (cmd) { 1059 case SSL_CTRL_GET_READ_AHEAD: 1060 return (s->internal->read_ahead); 1061 case SSL_CTRL_SET_READ_AHEAD: 1062 l = s->internal->read_ahead; 1063 s->internal->read_ahead = larg; 1064 return (l); 1065 1066 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1067 s->internal->msg_callback_arg = parg; 1068 return (1); 1069 1070 case SSL_CTRL_OPTIONS: 1071 return (s->internal->options|=larg); 1072 case SSL_CTRL_CLEAR_OPTIONS: 1073 return (s->internal->options&=~larg); 1074 case SSL_CTRL_MODE: 1075 return (s->internal->mode|=larg); 1076 case SSL_CTRL_CLEAR_MODE: 1077 return (s->internal->mode &=~larg); 1078 case SSL_CTRL_GET_MAX_CERT_LIST: 1079 return (s->internal->max_cert_list); 1080 case SSL_CTRL_SET_MAX_CERT_LIST: 1081 l = s->internal->max_cert_list; 1082 s->internal->max_cert_list = larg; 1083 return (l); 1084 case SSL_CTRL_SET_MTU: 1085#ifndef OPENSSL_NO_DTLS1 1086 if (larg < (long)dtls1_min_mtu()) 1087 return (0); 1088#endif 1089 if (SSL_IS_DTLS(s)) { 1090 D1I(s)->mtu = larg; 1091 return (larg); 1092 } 1093 return (0); 1094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1095 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1096 return (0); 1097 s->max_send_fragment = larg; 1098 return (1); 1099 case SSL_CTRL_GET_RI_SUPPORT: 1100 if (s->s3) 1101 return (S3I(s)->send_connection_binding); 1102 else return (0); 1103 default: 1104 if (SSL_IS_DTLS(s)) 1105 return dtls1_ctrl(s, cmd, larg, parg); 1106 return ssl3_ctrl(s, cmd, larg, parg); 1107 } 1108} 1109 1110long 1111SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1112{ 1113 switch (cmd) { 1114 case SSL_CTRL_SET_MSG_CALLBACK: 1115 s->internal->msg_callback = (void (*)(int write_p, int version, 1116 int content_type, const void *buf, size_t len, 1117 SSL *ssl, void *arg))(fp); 1118 return (1); 1119 1120 default: 1121 return (ssl3_callback_ctrl(s, cmd, fp)); 1122 } 1123} 1124 1125struct lhash_st_SSL_SESSION * 1126SSL_CTX_sessions(SSL_CTX *ctx) 1127{ 1128 return (ctx->internal->sessions); 1129} 1130 1131long 1132SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1133{ 1134 long l; 1135 1136 switch (cmd) { 1137 case SSL_CTRL_GET_READ_AHEAD: 1138 return (ctx->internal->read_ahead); 1139 case SSL_CTRL_SET_READ_AHEAD: 1140 l = ctx->internal->read_ahead; 1141 ctx->internal->read_ahead = larg; 1142 return (l); 1143 1144 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1145 ctx->internal->msg_callback_arg = parg; 1146 return (1); 1147 1148 case SSL_CTRL_GET_MAX_CERT_LIST: 1149 return (ctx->internal->max_cert_list); 1150 case SSL_CTRL_SET_MAX_CERT_LIST: 1151 l = ctx->internal->max_cert_list; 1152 ctx->internal->max_cert_list = larg; 1153 return (l); 1154 1155 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1156 l = ctx->internal->session_cache_size; 1157 ctx->internal->session_cache_size = larg; 1158 return (l); 1159 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1160 return (ctx->internal->session_cache_size); 1161 case SSL_CTRL_SET_SESS_CACHE_MODE: 1162 l = ctx->internal->session_cache_mode; 1163 ctx->internal->session_cache_mode = larg; 1164 return (l); 1165 case SSL_CTRL_GET_SESS_CACHE_MODE: 1166 return (ctx->internal->session_cache_mode); 1167 1168 case SSL_CTRL_SESS_NUMBER: 1169 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1170 case SSL_CTRL_SESS_CONNECT: 1171 return (ctx->internal->stats.sess_connect); 1172 case SSL_CTRL_SESS_CONNECT_GOOD: 1173 return (ctx->internal->stats.sess_connect_good); 1174 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1175 return (ctx->internal->stats.sess_connect_renegotiate); 1176 case SSL_CTRL_SESS_ACCEPT: 1177 return (ctx->internal->stats.sess_accept); 1178 case SSL_CTRL_SESS_ACCEPT_GOOD: 1179 return (ctx->internal->stats.sess_accept_good); 1180 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1181 return (ctx->internal->stats.sess_accept_renegotiate); 1182 case SSL_CTRL_SESS_HIT: 1183 return (ctx->internal->stats.sess_hit); 1184 case SSL_CTRL_SESS_CB_HIT: 1185 return (ctx->internal->stats.sess_cb_hit); 1186 case SSL_CTRL_SESS_MISSES: 1187 return (ctx->internal->stats.sess_miss); 1188 case SSL_CTRL_SESS_TIMEOUTS: 1189 return (ctx->internal->stats.sess_timeout); 1190 case SSL_CTRL_SESS_CACHE_FULL: 1191 return (ctx->internal->stats.sess_cache_full); 1192 case SSL_CTRL_OPTIONS: 1193 return (ctx->internal->options|=larg); 1194 case SSL_CTRL_CLEAR_OPTIONS: 1195 return (ctx->internal->options&=~larg); 1196 case SSL_CTRL_MODE: 1197 return (ctx->internal->mode|=larg); 1198 case SSL_CTRL_CLEAR_MODE: 1199 return (ctx->internal->mode&=~larg); 1200 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1201 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1202 return (0); 1203 ctx->internal->max_send_fragment = larg; 1204 return (1); 1205 default: 1206 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1207 } 1208} 1209 1210long 1211SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1212{ 1213 switch (cmd) { 1214 case SSL_CTRL_SET_MSG_CALLBACK: 1215 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1216 int content_type, const void *buf, size_t len, SSL *ssl, 1217 void *arg))(fp); 1218 return (1); 1219 1220 default: 1221 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1222 } 1223} 1224 1225int 1226ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1227{ 1228 long l; 1229 1230 l = a->id - b->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235} 1236 1237int 1238ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1239 const SSL_CIPHER * const *bp) 1240{ 1241 long l; 1242 1243 l = (*ap)->id - (*bp)->id; 1244 if (l == 0L) 1245 return (0); 1246 else 1247 return ((l > 0) ? 1:-1); 1248} 1249 1250/* 1251 * Return a STACK of the ciphers available for the SSL and in order of 1252 * preference. 1253 */ 1254STACK_OF(SSL_CIPHER) * 1255SSL_get_ciphers(const SSL *s) 1256{ 1257 if (s != NULL) { 1258 if (s->cipher_list != NULL) { 1259 return (s->cipher_list); 1260 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1261 return (s->ctx->cipher_list); 1262 } 1263 } 1264 return (NULL); 1265} 1266 1267/* 1268 * Return a STACK of the ciphers available for the SSL and in order of 1269 * algorithm id. 1270 */ 1271STACK_OF(SSL_CIPHER) * 1272ssl_get_ciphers_by_id(SSL *s) 1273{ 1274 if (s != NULL) { 1275 if (s->internal->cipher_list_by_id != NULL) { 1276 return (s->internal->cipher_list_by_id); 1277 } else if ((s->ctx != NULL) && 1278 (s->ctx->internal->cipher_list_by_id != NULL)) { 1279 return (s->ctx->internal->cipher_list_by_id); 1280 } 1281 } 1282 return (NULL); 1283} 1284 1285/* See if we have any ECC cipher suites. */ 1286int 1287ssl_has_ecc_ciphers(SSL *s) 1288{ 1289 STACK_OF(SSL_CIPHER) *ciphers; 1290 unsigned long alg_k, alg_a; 1291 SSL_CIPHER *cipher; 1292 int i; 1293 1294 if (s->version == DTLS1_VERSION) 1295 return 0; 1296 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1297 return 0; 1298 1299 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1300 cipher = sk_SSL_CIPHER_value(ciphers, i); 1301 1302 alg_k = cipher->algorithm_mkey; 1303 alg_a = cipher->algorithm_auth; 1304 1305 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1306 return 1; 1307 } 1308 1309 return 0; 1310} 1311 1312/* The old interface to get the same thing as SSL_get_ciphers(). */ 1313const char * 1314SSL_get_cipher_list(const SSL *s, int n) 1315{ 1316 SSL_CIPHER *c; 1317 STACK_OF(SSL_CIPHER) *sk; 1318 1319 if (s == NULL) 1320 return (NULL); 1321 sk = SSL_get_ciphers(s); 1322 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1323 return (NULL); 1324 c = sk_SSL_CIPHER_value(sk, n); 1325 if (c == NULL) 1326 return (NULL); 1327 return (c->name); 1328} 1329 1330STACK_OF(SSL_CIPHER) * 1331SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1332{ 1333 return ctx->cipher_list; 1334} 1335 1336/* Specify the ciphers to be used by default by the SSL_CTX. */ 1337int 1338SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1339{ 1340 STACK_OF(SSL_CIPHER) *sk; 1341 1342 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1343 &ctx->internal->cipher_list_by_id, str); 1344 /* 1345 * ssl_create_cipher_list may return an empty stack if it 1346 * was unable to find a cipher matching the given rule string 1347 * (for example if the rule string specifies a cipher which 1348 * has been disabled). This is not an error as far as 1349 * ssl_create_cipher_list is concerned, and hence 1350 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1351 * updated. 1352 */ 1353 if (sk == NULL) 1354 return (0); 1355 else if (sk_SSL_CIPHER_num(sk) == 0) { 1356 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1357 return (0); 1358 } 1359 return (1); 1360} 1361 1362/* Specify the ciphers to be used by the SSL. */ 1363int 1364SSL_set_cipher_list(SSL *s, const char *str) 1365{ 1366 STACK_OF(SSL_CIPHER) *sk; 1367 1368 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1369 &s->internal->cipher_list_by_id, str); 1370 /* see comment in SSL_CTX_set_cipher_list */ 1371 if (sk == NULL) 1372 return (0); 1373 else if (sk_SSL_CIPHER_num(sk) == 0) { 1374 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1375 return (0); 1376 } 1377 return (1); 1378} 1379 1380/* works well for SSLv2, not so good for SSLv3 */ 1381char * 1382SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1383{ 1384 char *end; 1385 STACK_OF(SSL_CIPHER) *sk; 1386 SSL_CIPHER *c; 1387 size_t curlen = 0; 1388 int i; 1389 1390 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1391 return (NULL); 1392 1393 sk = s->session->ciphers; 1394 if (sk_SSL_CIPHER_num(sk) == 0) 1395 return (NULL); 1396 1397 buf[0] = '\0'; 1398 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1399 c = sk_SSL_CIPHER_value(sk, i); 1400 end = buf + curlen; 1401 if (strlcat(buf, c->name, len) >= len || 1402 (curlen = strlcat(buf, ":", len)) >= len) { 1403 /* remove truncated cipher from list */ 1404 *end = '\0'; 1405 break; 1406 } 1407 } 1408 /* remove trailing colon */ 1409 if ((end = strrchr(buf, ':')) != NULL) 1410 *end = '\0'; 1411 return (buf); 1412} 1413 1414int 1415ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1416{ 1417 SSL_CIPHER *cipher; 1418 int num_ciphers = 0; 1419 int i; 1420 1421 if (ciphers == NULL) 1422 return 0; 1423 1424 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1425 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1426 return 0; 1427 1428 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1429 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1430 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1431 continue; 1432 1433 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1434 return 0; 1435 1436 num_ciphers++; 1437 } 1438 1439 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1440 if (num_ciphers > 0 && !s->internal->renegotiate) { 1441 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1442 return 0; 1443 } 1444 1445 if (!CBB_flush(cbb)) 1446 return 0; 1447 1448 return 1; 1449} 1450 1451STACK_OF(SSL_CIPHER) * 1452ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1453{ 1454 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1455 const SSL_CIPHER *cipher; 1456 uint16_t cipher_value, max_version; 1457 unsigned long cipher_id; 1458 1459 if (s->s3 != NULL) 1460 S3I(s)->send_connection_binding = 0; 1461 1462 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1463 SSLerror(s, ERR_R_MALLOC_FAILURE); 1464 goto err; 1465 } 1466 1467 while (CBS_len(cbs) > 0) { 1468 if (!CBS_get_u16(cbs, &cipher_value)) { 1469 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1470 goto err; 1471 } 1472 1473 cipher_id = SSL3_CK_ID | cipher_value; 1474 1475 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1476 /* 1477 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1478 * renegotiating. 1479 */ 1480 if (s->internal->renegotiate) { 1481 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1482 ssl3_send_alert(s, SSL3_AL_FATAL, 1483 SSL_AD_HANDSHAKE_FAILURE); 1484 1485 goto err; 1486 } 1487 S3I(s)->send_connection_binding = 1; 1488 continue; 1489 } 1490 1491 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1492 /* 1493 * TLS_FALLBACK_SCSV indicates that the client 1494 * previously tried a higher protocol version. 1495 * Fail if the current version is an unexpected 1496 * downgrade. 1497 */ 1498 max_version = ssl_max_server_version(s); 1499 if (max_version == 0 || s->version < max_version) { 1500 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1501 if (s->s3 != NULL) 1502 ssl3_send_alert(s, SSL3_AL_FATAL, 1503 SSL_AD_INAPPROPRIATE_FALLBACK); 1504 goto err; 1505 } 1506 continue; 1507 } 1508 1509 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1510 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1511 SSLerror(s, ERR_R_MALLOC_FAILURE); 1512 goto err; 1513 } 1514 } 1515 } 1516 1517 return (ciphers); 1518 1519err: 1520 sk_SSL_CIPHER_free(ciphers); 1521 1522 return (NULL); 1523} 1524 1525 1526/* 1527 * Return a servername extension value if provided in Client Hello, or NULL. 1528 * So far, only host_name types are defined (RFC 3546). 1529 */ 1530const char * 1531SSL_get_servername(const SSL *s, const int type) 1532{ 1533 if (type != TLSEXT_NAMETYPE_host_name) 1534 return (NULL); 1535 1536 return (s->session && !s->tlsext_hostname ? 1537 s->session->tlsext_hostname : 1538 s->tlsext_hostname); 1539} 1540 1541int 1542SSL_get_servername_type(const SSL *s) 1543{ 1544 if (s->session && 1545 (!s->tlsext_hostname ? 1546 s->session->tlsext_hostname : s->tlsext_hostname)) 1547 return (TLSEXT_NAMETYPE_host_name); 1548 return (-1); 1549} 1550 1551/* 1552 * SSL_select_next_proto implements standard protocol selection. It is 1553 * expected that this function is called from the callback set by 1554 * SSL_CTX_set_alpn_select_cb. 1555 * 1556 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1557 * strings. The length byte itself is not included in the length. A byte 1558 * string of length 0 is invalid. No byte string may be truncated. 1559 * 1560 * It returns either: 1561 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1562 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1563 */ 1564int 1565SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1566 const unsigned char *server, unsigned int server_len, 1567 const unsigned char *client, unsigned int client_len) 1568{ 1569 unsigned int i, j; 1570 const unsigned char *result; 1571 int status = OPENSSL_NPN_UNSUPPORTED; 1572 1573 /* 1574 * For each protocol in server preference order, 1575 * see if we support it. 1576 */ 1577 for (i = 0; i < server_len; ) { 1578 for (j = 0; j < client_len; ) { 1579 if (server[i] == client[j] && 1580 memcmp(&server[i + 1], 1581 &client[j + 1], server[i]) == 0) { 1582 /* We found a match */ 1583 result = &server[i]; 1584 status = OPENSSL_NPN_NEGOTIATED; 1585 goto found; 1586 } 1587 j += client[j]; 1588 j++; 1589 } 1590 i += server[i]; 1591 i++; 1592 } 1593 1594 /* There's no overlap between our protocols and the server's list. */ 1595 result = client; 1596 status = OPENSSL_NPN_NO_OVERLAP; 1597 1598found: 1599 *out = (unsigned char *) result + 1; 1600 *outlen = result[0]; 1601 return (status); 1602} 1603 1604/* SSL_get0_next_proto_negotiated is deprecated. */ 1605void 1606SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1607 unsigned *len) 1608{ 1609 *data = NULL; 1610 *len = 0; 1611} 1612 1613/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1614void 1615SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1616 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1617{ 1618} 1619 1620/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1621void 1622SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1623 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1624 unsigned int inlen, void *arg), void *arg) 1625{ 1626} 1627 1628/* 1629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1630 * protocols, which must be in wire-format (i.e. a series of non-empty, 1631 * 8-bit length-prefixed strings). Returns 0 on success. 1632 */ 1633int 1634SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1635 unsigned int protos_len) 1636{ 1637 int failed = 1; 1638 1639 if (protos == NULL || protos_len == 0) 1640 goto err; 1641 1642 free(ctx->internal->alpn_client_proto_list); 1643 ctx->internal->alpn_client_proto_list = NULL; 1644 ctx->internal->alpn_client_proto_list_len = 0; 1645 1646 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1647 == NULL) 1648 goto err; 1649 ctx->internal->alpn_client_proto_list_len = protos_len; 1650 1651 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1652 1653 failed = 0; 1654 1655 err: 1656 /* NOTE: Return values are the reverse of what you expect. */ 1657 return (failed); 1658} 1659 1660/* 1661 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1662 * protocols, which must be in wire-format (i.e. a series of non-empty, 1663 * 8-bit length-prefixed strings). Returns 0 on success. 1664 */ 1665int 1666SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1667 unsigned int protos_len) 1668{ 1669 int failed = 1; 1670 1671 if (protos == NULL || protos_len == 0) 1672 goto err; 1673 1674 free(ssl->internal->alpn_client_proto_list); 1675 ssl->internal->alpn_client_proto_list = NULL; 1676 ssl->internal->alpn_client_proto_list_len = 0; 1677 1678 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1679 == NULL) 1680 goto err; 1681 ssl->internal->alpn_client_proto_list_len = protos_len; 1682 1683 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1684 1685 failed = 0; 1686 1687 err: 1688 /* NOTE: Return values are the reverse of what you expect. */ 1689 return (failed); 1690} 1691 1692/* 1693 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1694 * ClientHello processing in order to select an ALPN protocol from the 1695 * client's list of offered protocols. 1696 */ 1697void 1698SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1699 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1700 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1701{ 1702 ctx->internal->alpn_select_cb = cb; 1703 ctx->internal->alpn_select_cb_arg = arg; 1704} 1705 1706/* 1707 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1708 * it sets data to point to len bytes of protocol name (not including the 1709 * leading length-prefix byte). If the server didn't respond with* a negotiated 1710 * protocol then len will be zero. 1711 */ 1712void 1713SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1714 unsigned *len) 1715{ 1716 *data = NULL; 1717 *len = 0; 1718 1719 if (ssl->s3 != NULL) { 1720 *data = ssl->s3->internal->alpn_selected; 1721 *len = ssl->s3->internal->alpn_selected_len; 1722 } 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 return (tls1_export_keying_material(s, out, olen, 1731 label, llen, p, plen, use_context)); 1732} 1733 1734static unsigned long 1735ssl_session_hash(const SSL_SESSION *a) 1736{ 1737 unsigned long l; 1738 1739 l = (unsigned long) 1740 ((unsigned int) a->session_id[0] )| 1741 ((unsigned int) a->session_id[1]<< 8L)| 1742 ((unsigned long)a->session_id[2]<<16L)| 1743 ((unsigned long)a->session_id[3]<<24L); 1744 return (l); 1745} 1746 1747/* 1748 * NB: If this function (or indeed the hash function which uses a sort of 1749 * coarser function than this one) is changed, ensure 1750 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1751 * able to construct an SSL_SESSION that will collide with any existing session 1752 * with a matching session ID. 1753 */ 1754static int 1755ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1756{ 1757 if (a->ssl_version != b->ssl_version) 1758 return (1); 1759 if (a->session_id_length != b->session_id_length) 1760 return (1); 1761 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1762 return (1); 1763 return (0); 1764} 1765 1766/* 1767 * These wrapper functions should remain rather than redeclaring 1768 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1769 * variable. The reason is that the functions aren't static, they're exposed via 1770 * ssl.h. 1771 */ 1772static unsigned long 1773ssl_session_LHASH_HASH(const void *arg) 1774{ 1775 const SSL_SESSION *a = arg; 1776 1777 return ssl_session_hash(a); 1778} 1779 1780static int 1781ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1782{ 1783 const SSL_SESSION *a = arg1; 1784 const SSL_SESSION *b = arg2; 1785 1786 return ssl_session_cmp(a, b); 1787} 1788 1789SSL_CTX * 1790SSL_CTX_new(const SSL_METHOD *meth) 1791{ 1792 SSL_CTX *ret; 1793 1794 if (meth == NULL) { 1795 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1796 return (NULL); 1797 } 1798 1799 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1800 SSLerrorx(ERR_R_MALLOC_FAILURE); 1801 return (NULL); 1802 } 1803 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1804 free(ret); 1805 SSLerrorx(ERR_R_MALLOC_FAILURE); 1806 return (NULL); 1807 } 1808 1809 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1810 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1811 goto err; 1812 } 1813 1814 ret->method = meth; 1815 ret->internal->min_version = meth->internal->min_version; 1816 ret->internal->max_version = meth->internal->max_version; 1817 1818 ret->cert_store = NULL; 1819 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1820 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1821 ret->internal->session_cache_head = NULL; 1822 ret->internal->session_cache_tail = NULL; 1823 1824 /* We take the system default */ 1825 ret->session_timeout = meth->internal->get_timeout(); 1826 1827 ret->internal->new_session_cb = 0; 1828 ret->internal->remove_session_cb = 0; 1829 ret->internal->get_session_cb = 0; 1830 ret->internal->generate_session_id = 0; 1831 1832 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1833 1834 ret->references = 1; 1835 ret->internal->quiet_shutdown = 0; 1836 1837 ret->internal->info_callback = NULL; 1838 1839 ret->internal->app_verify_callback = 0; 1840 ret->internal->app_verify_arg = NULL; 1841 1842 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1843 ret->internal->read_ahead = 0; 1844 ret->internal->msg_callback = 0; 1845 ret->internal->msg_callback_arg = NULL; 1846 ret->verify_mode = SSL_VERIFY_NONE; 1847 ret->sid_ctx_length = 0; 1848 ret->internal->default_verify_callback = NULL; 1849 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1850 goto err; 1851 1852 ret->default_passwd_callback = 0; 1853 ret->default_passwd_callback_userdata = NULL; 1854 ret->internal->client_cert_cb = 0; 1855 ret->internal->app_gen_cookie_cb = 0; 1856 ret->internal->app_verify_cookie_cb = 0; 1857 1858 ret->internal->sessions = lh_SSL_SESSION_new(); 1859 if (ret->internal->sessions == NULL) 1860 goto err; 1861 ret->cert_store = X509_STORE_new(); 1862 if (ret->cert_store == NULL) 1863 goto err; 1864 1865 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1866 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1867 if (ret->cipher_list == NULL || 1868 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1869 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1870 goto err2; 1871 } 1872 1873 ret->param = X509_VERIFY_PARAM_new(); 1874 if (!ret->param) 1875 goto err; 1876 1877 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1878 goto err; 1879 1880 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1881 1882 ret->extra_certs = NULL; 1883 1884 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1885 1886 ret->internal->tlsext_servername_callback = 0; 1887 ret->internal->tlsext_servername_arg = NULL; 1888 1889 /* Setup RFC4507 ticket keys */ 1890 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1891 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1892 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1893 1894 ret->internal->tlsext_status_cb = 0; 1895 ret->internal->tlsext_status_arg = NULL; 1896 1897#ifndef OPENSSL_NO_ENGINE 1898 ret->internal->client_cert_engine = NULL; 1899#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1900#define eng_strx(x) #x 1901#define eng_str(x) eng_strx(x) 1902 /* Use specific client engine automatically... ignore errors */ 1903 { 1904 ENGINE *eng; 1905 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1906 if (!eng) { 1907 ERR_clear_error(); 1908 ENGINE_load_builtin_engines(); 1909 eng = ENGINE_by_id(eng_str( 1910 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1911 } 1912 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1913 ERR_clear_error(); 1914 } 1915#endif 1916#endif 1917 /* 1918 * Default is to connect to non-RI servers. When RI is more widely 1919 * deployed might change this. 1920 */ 1921 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1922 1923 return (ret); 1924err: 1925 SSLerrorx(ERR_R_MALLOC_FAILURE); 1926err2: 1927 SSL_CTX_free(ret); 1928 return (NULL); 1929} 1930 1931void 1932SSL_CTX_free(SSL_CTX *ctx) 1933{ 1934 int i; 1935 1936 if (ctx == NULL) 1937 return; 1938 1939 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1940 if (i > 0) 1941 return; 1942 1943 X509_VERIFY_PARAM_free(ctx->param); 1944 1945 /* 1946 * Free internal session cache. However: the remove_cb() may reference 1947 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1948 * after the sessions were flushed. 1949 * As the ex_data handling routines might also touch the session cache, 1950 * the most secure solution seems to be: empty (flush) the cache, then 1951 * free ex_data, then finally free the cache. 1952 * (See ticket [openssl.org #212].) 1953 */ 1954 if (ctx->internal->sessions != NULL) 1955 SSL_CTX_flush_sessions(ctx, 0); 1956 1957 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1958 1959 lh_SSL_SESSION_free(ctx->internal->sessions); 1960 1961 X509_STORE_free(ctx->cert_store); 1962 sk_SSL_CIPHER_free(ctx->cipher_list); 1963 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1964 ssl_cert_free(ctx->internal->cert); 1965 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1966 sk_X509_pop_free(ctx->extra_certs, X509_free); 1967 1968#ifndef OPENSSL_NO_SRTP 1969 if (ctx->internal->srtp_profiles) 1970 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1971#endif 1972 1973#ifndef OPENSSL_NO_ENGINE 1974 if (ctx->internal->client_cert_engine) 1975 ENGINE_finish(ctx->internal->client_cert_engine); 1976#endif 1977 1978 free(ctx->internal->tlsext_ecpointformatlist); 1979 free(ctx->internal->tlsext_supportedgroups); 1980 1981 free(ctx->internal->alpn_client_proto_list); 1982 1983 free(ctx->internal); 1984 free(ctx); 1985} 1986 1987int 1988SSL_CTX_up_ref(SSL_CTX *ctx) 1989{ 1990 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1991 return ((refs > 1) ? 1 : 0); 1992} 1993 1994pem_password_cb * 1995SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1996{ 1997 return (ctx->default_passwd_callback); 1998} 1999 2000void 2001SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2002{ 2003 ctx->default_passwd_callback = cb; 2004} 2005 2006void * 2007SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2008{ 2009 return ctx->default_passwd_callback_userdata; 2010} 2011 2012void 2013SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2014{ 2015 ctx->default_passwd_callback_userdata = u; 2016} 2017 2018void 2019SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2020 void *), void *arg) 2021{ 2022 ctx->internal->app_verify_callback = cb; 2023 ctx->internal->app_verify_arg = arg; 2024} 2025 2026void 2027SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2028{ 2029 ctx->verify_mode = mode; 2030 ctx->internal->default_verify_callback = cb; 2031} 2032 2033void 2034SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2035{ 2036 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2037} 2038 2039void 2040ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2041{ 2042 int rsa_enc, rsa_sign, dh_tmp; 2043 int have_ecc_cert; 2044 unsigned long mask_k, mask_a; 2045 X509 *x = NULL; 2046 CERT_PKEY *cpk; 2047 2048 if (c == NULL) 2049 return; 2050 2051 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2052 c->dh_tmp_auto != 0); 2053 2054 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2055 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2056 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2057 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2058 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2059 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 2061 mask_k = 0; 2062 mask_a = 0; 2063 2064 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2065 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2066 mask_k |= SSL_kGOST; 2067 mask_a |= SSL_aGOST01; 2068 } 2069 2070 if (rsa_enc) 2071 mask_k |= SSL_kRSA; 2072 2073 if (dh_tmp) 2074 mask_k |= SSL_kDHE; 2075 2076 if (rsa_enc || rsa_sign) 2077 mask_a |= SSL_aRSA; 2078 2079 mask_a |= SSL_aNULL; 2080 2081 /* 2082 * An ECC certificate may be usable for ECDH and/or 2083 * ECDSA cipher suites depending on the key usage extension. 2084 */ 2085 if (have_ecc_cert) { 2086 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2087 2088 /* This call populates extension flags (ex_flags). */ 2089 X509_check_purpose(x, -1, 0); 2090 2091 /* Key usage, if present, must allow signing. */ 2092 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2093 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2094 mask_a |= SSL_aECDSA; 2095 } 2096 2097 mask_k |= SSL_kECDHE; 2098 2099 c->mask_k = mask_k; 2100 c->mask_a = mask_a; 2101 c->valid = 1; 2102} 2103 2104/* See if this handshake is using an ECC cipher suite. */ 2105int 2106ssl_using_ecc_cipher(SSL *s) 2107{ 2108 unsigned long alg_a, alg_k; 2109 2110 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2111 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2112 2113 return SSI(s)->tlsext_ecpointformatlist != NULL && 2114 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2115 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2116} 2117 2118int 2119ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2120{ 2121 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2122 unsigned long alg_a; 2123 2124 alg_a = cs->algorithm_auth; 2125 2126 if (alg_a & SSL_aECDSA) { 2127 /* This call populates extension flags (ex_flags). */ 2128 X509_check_purpose(x, -1, 0); 2129 2130 /* Key usage, if present, must allow signing. */ 2131 if ((x->ex_flags & EXFLAG_KUSAGE) && 2132 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2133 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2134 return (0); 2135 } 2136 } 2137 2138 return (1); 2139} 2140 2141CERT_PKEY * 2142ssl_get_server_send_pkey(const SSL *s) 2143{ 2144 unsigned long alg_a; 2145 CERT *c; 2146 int i; 2147 2148 c = s->cert; 2149 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2150 2151 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2152 2153 if (alg_a & SSL_aECDSA) { 2154 i = SSL_PKEY_ECC; 2155 } else if (alg_a & SSL_aRSA) { 2156 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2157 i = SSL_PKEY_RSA_SIGN; 2158 else 2159 i = SSL_PKEY_RSA_ENC; 2160 } else if (alg_a & SSL_aGOST01) { 2161 i = SSL_PKEY_GOST01; 2162 } else { /* if (alg_a & SSL_aNULL) */ 2163 SSLerror(s, ERR_R_INTERNAL_ERROR); 2164 return (NULL); 2165 } 2166 2167 return (c->pkeys + i); 2168} 2169 2170X509 * 2171ssl_get_server_send_cert(const SSL *s) 2172{ 2173 CERT_PKEY *cpk; 2174 2175 cpk = ssl_get_server_send_pkey(s); 2176 if (!cpk) 2177 return (NULL); 2178 return (cpk->x509); 2179} 2180 2181EVP_PKEY * 2182ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2183{ 2184 unsigned long alg_a; 2185 CERT *c; 2186 int idx = -1; 2187 2188 alg_a = cipher->algorithm_auth; 2189 c = s->cert; 2190 2191 if (alg_a & SSL_aRSA) { 2192 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2193 idx = SSL_PKEY_RSA_SIGN; 2194 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2195 idx = SSL_PKEY_RSA_ENC; 2196 } else if ((alg_a & SSL_aECDSA) && 2197 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2198 idx = SSL_PKEY_ECC; 2199 if (idx == -1) { 2200 SSLerror(s, ERR_R_INTERNAL_ERROR); 2201 return (NULL); 2202 } 2203 if (pmd) 2204 *pmd = c->pkeys[idx].digest; 2205 return (c->pkeys[idx].privatekey); 2206} 2207 2208DH * 2209ssl_get_auto_dh(SSL *s) 2210{ 2211 CERT_PKEY *cpk; 2212 int keylen; 2213 DH *dhp; 2214 2215 if (s->cert->dh_tmp_auto == 2) { 2216 keylen = 1024; 2217 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2218 keylen = 1024; 2219 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2220 keylen = 3072; 2221 } else { 2222 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2223 return (NULL); 2224 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2225 return (NULL); 2226 keylen = EVP_PKEY_bits(cpk->privatekey); 2227 } 2228 2229 if ((dhp = DH_new()) == NULL) 2230 return (NULL); 2231 2232 dhp->g = BN_new(); 2233 if (dhp->g != NULL) 2234 BN_set_word(dhp->g, 2); 2235 2236 if (keylen >= 8192) 2237 dhp->p = get_rfc3526_prime_8192(NULL); 2238 else if (keylen >= 4096) 2239 dhp->p = get_rfc3526_prime_4096(NULL); 2240 else if (keylen >= 3072) 2241 dhp->p = get_rfc3526_prime_3072(NULL); 2242 else if (keylen >= 2048) 2243 dhp->p = get_rfc3526_prime_2048(NULL); 2244 else if (keylen >= 1536) 2245 dhp->p = get_rfc3526_prime_1536(NULL); 2246 else 2247 dhp->p = get_rfc2409_prime_1024(NULL); 2248 2249 if (dhp->p == NULL || dhp->g == NULL) { 2250 DH_free(dhp); 2251 return (NULL); 2252 } 2253 return (dhp); 2254} 2255 2256void 2257ssl_update_cache(SSL *s, int mode) 2258{ 2259 int i; 2260 2261 /* 2262 * If the session_id_length is 0, we are not supposed to cache it, 2263 * and it would be rather hard to do anyway :-) 2264 */ 2265 if (s->session->session_id_length == 0) 2266 return; 2267 2268 i = s->session_ctx->internal->session_cache_mode; 2269 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2270 || SSL_CTX_add_session(s->session_ctx, s->session)) 2271 && (s->session_ctx->internal->new_session_cb != NULL)) { 2272 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2273 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2274 SSL_SESSION_free(s->session); 2275 } 2276 2277 /* auto flush every 255 connections */ 2278 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2279 ((i & mode) == mode)) { 2280 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2281 s->session_ctx->internal->stats.sess_connect_good : 2282 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2283 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2284 } 2285 } 2286} 2287 2288const SSL_METHOD * 2289SSL_get_ssl_method(SSL *s) 2290{ 2291 return (s->method); 2292} 2293 2294int 2295SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2296{ 2297 int conn = -1; 2298 int ret = 1; 2299 2300 if (s->method != meth) { 2301 if (s->internal->handshake_func != NULL) 2302 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2303 2304 if (s->method->internal->version == meth->internal->version) 2305 s->method = meth; 2306 else { 2307 s->method->internal->ssl_free(s); 2308 s->method = meth; 2309 ret = s->method->internal->ssl_new(s); 2310 } 2311 2312 if (conn == 1) 2313 s->internal->handshake_func = meth->internal->ssl_connect; 2314 else if (conn == 0) 2315 s->internal->handshake_func = meth->internal->ssl_accept; 2316 } 2317 return (ret); 2318} 2319 2320int 2321SSL_get_error(const SSL *s, int i) 2322{ 2323 int reason; 2324 unsigned long l; 2325 BIO *bio; 2326 2327 if (i > 0) 2328 return (SSL_ERROR_NONE); 2329 2330 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2331 * etc, where we do encode the error */ 2332 if ((l = ERR_peek_error()) != 0) { 2333 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2334 return (SSL_ERROR_SYSCALL); 2335 else 2336 return (SSL_ERROR_SSL); 2337 } 2338 2339 if ((i < 0) && SSL_want_read(s)) { 2340 bio = SSL_get_rbio(s); 2341 if (BIO_should_read(bio)) { 2342 return (SSL_ERROR_WANT_READ); 2343 } else if (BIO_should_write(bio)) { 2344 /* 2345 * This one doesn't make too much sense... We never 2346 * try to write to the rbio, and an application 2347 * program where rbio and wbio are separate couldn't 2348 * even know what it should wait for. However if we 2349 * ever set s->internal->rwstate incorrectly (so that we have 2350 * SSL_want_read(s) instead of SSL_want_write(s)) 2351 * and rbio and wbio *are* the same, this test works 2352 * around that bug; so it might be safer to keep it. 2353 */ 2354 return (SSL_ERROR_WANT_WRITE); 2355 } else if (BIO_should_io_special(bio)) { 2356 reason = BIO_get_retry_reason(bio); 2357 if (reason == BIO_RR_CONNECT) 2358 return (SSL_ERROR_WANT_CONNECT); 2359 else if (reason == BIO_RR_ACCEPT) 2360 return (SSL_ERROR_WANT_ACCEPT); 2361 else 2362 return (SSL_ERROR_SYSCALL); /* unknown */ 2363 } 2364 } 2365 2366 if ((i < 0) && SSL_want_write(s)) { 2367 bio = SSL_get_wbio(s); 2368 if (BIO_should_write(bio)) { 2369 return (SSL_ERROR_WANT_WRITE); 2370 } else if (BIO_should_read(bio)) { 2371 /* 2372 * See above (SSL_want_read(s) with 2373 * BIO_should_write(bio)) 2374 */ 2375 return (SSL_ERROR_WANT_READ); 2376 } else if (BIO_should_io_special(bio)) { 2377 reason = BIO_get_retry_reason(bio); 2378 if (reason == BIO_RR_CONNECT) 2379 return (SSL_ERROR_WANT_CONNECT); 2380 else if (reason == BIO_RR_ACCEPT) 2381 return (SSL_ERROR_WANT_ACCEPT); 2382 else 2383 return (SSL_ERROR_SYSCALL); 2384 } 2385 } 2386 if ((i < 0) && SSL_want_x509_lookup(s)) { 2387 return (SSL_ERROR_WANT_X509_LOOKUP); 2388 } 2389 2390 if (i == 0) { 2391 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2392 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2393 return (SSL_ERROR_ZERO_RETURN); 2394 } 2395 return (SSL_ERROR_SYSCALL); 2396} 2397 2398int 2399SSL_do_handshake(SSL *s) 2400{ 2401 int ret = 1; 2402 2403 if (s->internal->handshake_func == NULL) { 2404 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2405 return (-1); 2406 } 2407 2408 s->method->internal->ssl_renegotiate_check(s); 2409 2410 if (SSL_in_init(s) || SSL_in_before(s)) { 2411 ret = s->internal->handshake_func(s); 2412 } 2413 return (ret); 2414} 2415 2416/* 2417 * For the next 2 functions, SSL_clear() sets shutdown and so 2418 * one of these calls will reset it 2419 */ 2420void 2421SSL_set_accept_state(SSL *s) 2422{ 2423 s->server = 1; 2424 s->internal->shutdown = 0; 2425 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2426 s->internal->handshake_func = s->method->internal->ssl_accept; 2427 /* clear the current cipher */ 2428 ssl_clear_cipher_ctx(s); 2429 ssl_clear_hash_ctx(&s->read_hash); 2430 ssl_clear_hash_ctx(&s->internal->write_hash); 2431} 2432 2433void 2434SSL_set_connect_state(SSL *s) 2435{ 2436 s->server = 0; 2437 s->internal->shutdown = 0; 2438 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2439 s->internal->handshake_func = s->method->internal->ssl_connect; 2440 /* clear the current cipher */ 2441 ssl_clear_cipher_ctx(s); 2442 ssl_clear_hash_ctx(&s->read_hash); 2443 ssl_clear_hash_ctx(&s->internal->write_hash); 2444} 2445 2446int 2447ssl_undefined_function(SSL *s) 2448{ 2449 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2450 return (0); 2451} 2452 2453int 2454ssl_undefined_void_function(void) 2455{ 2456 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2457 return (0); 2458} 2459 2460int 2461ssl_undefined_const_function(const SSL *s) 2462{ 2463 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2464 return (0); 2465} 2466 2467const char * 2468ssl_version_string(int ver) 2469{ 2470 switch (ver) { 2471 case DTLS1_VERSION: 2472 return (SSL_TXT_DTLS1); 2473 case TLS1_VERSION: 2474 return (SSL_TXT_TLSV1); 2475 case TLS1_1_VERSION: 2476 return (SSL_TXT_TLSV1_1); 2477 case TLS1_2_VERSION: 2478 return (SSL_TXT_TLSV1_2); 2479 default: 2480 return ("unknown"); 2481 } 2482} 2483 2484const char * 2485SSL_get_version(const SSL *s) 2486{ 2487 return ssl_version_string(s->version); 2488} 2489 2490SSL * 2491SSL_dup(SSL *s) 2492{ 2493 STACK_OF(X509_NAME) *sk; 2494 X509_NAME *xn; 2495 SSL *ret; 2496 int i; 2497 2498 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2499 return (NULL); 2500 2501 ret->version = s->version; 2502 ret->internal->type = s->internal->type; 2503 ret->method = s->method; 2504 2505 if (s->session != NULL) { 2506 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2507 SSL_copy_session_id(ret, s); 2508 } else { 2509 /* 2510 * No session has been established yet, so we have to expect 2511 * that s->cert or ret->cert will be changed later -- 2512 * they should not both point to the same object, 2513 * and thus we can't use SSL_copy_session_id. 2514 */ 2515 2516 ret->method->internal->ssl_free(ret); 2517 ret->method = s->method; 2518 ret->method->internal->ssl_new(ret); 2519 2520 if (s->cert != NULL) { 2521 ssl_cert_free(ret->cert); 2522 ret->cert = ssl_cert_dup(s->cert); 2523 if (ret->cert == NULL) 2524 goto err; 2525 } 2526 2527 SSL_set_session_id_context(ret, 2528 s->sid_ctx, s->sid_ctx_length); 2529 } 2530 2531 ret->internal->options = s->internal->options; 2532 ret->internal->mode = s->internal->mode; 2533 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2534 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2535 ret->internal->msg_callback = s->internal->msg_callback; 2536 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2537 SSL_set_verify(ret, SSL_get_verify_mode(s), 2538 SSL_get_verify_callback(s)); 2539 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2540 ret->internal->generate_session_id = s->internal->generate_session_id; 2541 2542 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2543 2544 ret->internal->debug = s->internal->debug; 2545 2546 /* copy app data, a little dangerous perhaps */ 2547 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2548 &ret->internal->ex_data, &s->internal->ex_data)) 2549 goto err; 2550 2551 /* setup rbio, and wbio */ 2552 if (s->rbio != NULL) { 2553 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2554 goto err; 2555 } 2556 if (s->wbio != NULL) { 2557 if (s->wbio != s->rbio) { 2558 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2559 goto err; 2560 } else 2561 ret->wbio = ret->rbio; 2562 } 2563 ret->internal->rwstate = s->internal->rwstate; 2564 ret->internal->in_handshake = s->internal->in_handshake; 2565 ret->internal->handshake_func = s->internal->handshake_func; 2566 ret->server = s->server; 2567 ret->internal->renegotiate = s->internal->renegotiate; 2568 ret->internal->new_session = s->internal->new_session; 2569 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2570 ret->internal->shutdown = s->internal->shutdown; 2571 /* SSL_dup does not really work at any state, though */ 2572 S3I(ret)->hs.state = S3I(s)->hs.state; 2573 ret->internal->rstate = s->internal->rstate; 2574 2575 /* 2576 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2577 * ret->init_off 2578 */ 2579 ret->internal->init_num = 0; 2580 2581 ret->internal->hit = s->internal->hit; 2582 2583 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2584 2585 /* dup the cipher_list and cipher_list_by_id stacks */ 2586 if (s->cipher_list != NULL) { 2587 if ((ret->cipher_list = 2588 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2589 goto err; 2590 } 2591 if (s->internal->cipher_list_by_id != NULL) { 2592 if ((ret->internal->cipher_list_by_id = 2593 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2594 goto err; 2595 } 2596 2597 /* Dup the client_CA list */ 2598 if (s->internal->client_CA != NULL) { 2599 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2600 ret->internal->client_CA = sk; 2601 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2602 xn = sk_X509_NAME_value(sk, i); 2603 if (sk_X509_NAME_set(sk, i, 2604 X509_NAME_dup(xn)) == NULL) { 2605 X509_NAME_free(xn); 2606 goto err; 2607 } 2608 } 2609 } 2610 2611 if (0) { 2612err: 2613 if (ret != NULL) 2614 SSL_free(ret); 2615 ret = NULL; 2616 } 2617 return (ret); 2618} 2619 2620void 2621ssl_clear_cipher_ctx(SSL *s) 2622{ 2623 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2624 s->enc_read_ctx = NULL; 2625 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2626 s->internal->enc_write_ctx = NULL; 2627 2628 if (s->internal->aead_read_ctx != NULL) { 2629 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2630 free(s->internal->aead_read_ctx); 2631 s->internal->aead_read_ctx = NULL; 2632 } 2633 if (s->internal->aead_write_ctx != NULL) { 2634 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2635 free(s->internal->aead_write_ctx); 2636 s->internal->aead_write_ctx = NULL; 2637 } 2638 2639} 2640 2641/* Fix this function so that it takes an optional type parameter */ 2642X509 * 2643SSL_get_certificate(const SSL *s) 2644{ 2645 if (s->cert != NULL) 2646 return (s->cert->key->x509); 2647 else 2648 return (NULL); 2649} 2650 2651/* Fix this function so that it takes an optional type parameter */ 2652EVP_PKEY * 2653SSL_get_privatekey(SSL *s) 2654{ 2655 if (s->cert != NULL) 2656 return (s->cert->key->privatekey); 2657 else 2658 return (NULL); 2659} 2660 2661const SSL_CIPHER * 2662SSL_get_current_cipher(const SSL *s) 2663{ 2664 if ((s->session != NULL) && (s->session->cipher != NULL)) 2665 return (s->session->cipher); 2666 return (NULL); 2667} 2668const void * 2669SSL_get_current_compression(SSL *s) 2670{ 2671 return (NULL); 2672} 2673 2674const void * 2675SSL_get_current_expansion(SSL *s) 2676{ 2677 return (NULL); 2678} 2679 2680size_t 2681SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2682{ 2683 size_t len = sizeof(s->s3->client_random); 2684 2685 if (out == NULL) 2686 return len; 2687 2688 if (len > max_out) 2689 len = max_out; 2690 2691 memcpy(out, s->s3->client_random, len); 2692 2693 return len; 2694} 2695 2696size_t 2697SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2698{ 2699 size_t len = sizeof(s->s3->server_random); 2700 2701 if (out == NULL) 2702 return len; 2703 2704 if (len > max_out) 2705 len = max_out; 2706 2707 memcpy(out, s->s3->server_random, len); 2708 2709 return len; 2710} 2711 2712int 2713ssl_init_wbio_buffer(SSL *s, int push) 2714{ 2715 BIO *bbio; 2716 2717 if (s->bbio == NULL) { 2718 bbio = BIO_new(BIO_f_buffer()); 2719 if (bbio == NULL) 2720 return (0); 2721 s->bbio = bbio; 2722 } else { 2723 bbio = s->bbio; 2724 if (s->bbio == s->wbio) 2725 s->wbio = BIO_pop(s->wbio); 2726 } 2727 (void)BIO_reset(bbio); 2728/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2729 if (!BIO_set_read_buffer_size(bbio, 1)) { 2730 SSLerror(s, ERR_R_BUF_LIB); 2731 return (0); 2732 } 2733 if (push) { 2734 if (s->wbio != bbio) 2735 s->wbio = BIO_push(bbio, s->wbio); 2736 } else { 2737 if (s->wbio == bbio) 2738 s->wbio = BIO_pop(bbio); 2739 } 2740 return (1); 2741} 2742 2743void 2744ssl_free_wbio_buffer(SSL *s) 2745{ 2746 if (s == NULL) 2747 return; 2748 2749 if (s->bbio == NULL) 2750 return; 2751 2752 if (s->bbio == s->wbio) { 2753 /* remove buffering */ 2754 s->wbio = BIO_pop(s->wbio); 2755 } 2756 BIO_free(s->bbio); 2757 s->bbio = NULL; 2758} 2759 2760void 2761SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2762{ 2763 ctx->internal->quiet_shutdown = mode; 2764} 2765 2766int 2767SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2768{ 2769 return (ctx->internal->quiet_shutdown); 2770} 2771 2772void 2773SSL_set_quiet_shutdown(SSL *s, int mode) 2774{ 2775 s->internal->quiet_shutdown = mode; 2776} 2777 2778int 2779SSL_get_quiet_shutdown(const SSL *s) 2780{ 2781 return (s->internal->quiet_shutdown); 2782} 2783 2784void 2785SSL_set_shutdown(SSL *s, int mode) 2786{ 2787 s->internal->shutdown = mode; 2788} 2789 2790int 2791SSL_get_shutdown(const SSL *s) 2792{ 2793 return (s->internal->shutdown); 2794} 2795 2796int 2797SSL_version(const SSL *s) 2798{ 2799 return (s->version); 2800} 2801 2802SSL_CTX * 2803SSL_get_SSL_CTX(const SSL *ssl) 2804{ 2805 return (ssl->ctx); 2806} 2807 2808SSL_CTX * 2809SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2810{ 2811 CERT *ocert = ssl->cert; 2812 2813 if (ssl->ctx == ctx) 2814 return (ssl->ctx); 2815 if (ctx == NULL) 2816 ctx = ssl->initial_ctx; 2817 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2818 if (ocert != NULL) { 2819 int i; 2820 /* Copy negotiated digests from original certificate. */ 2821 for (i = 0; i < SSL_PKEY_NUM; i++) 2822 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2823 ssl_cert_free(ocert); 2824 } 2825 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2826 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2827 ssl->ctx = ctx; 2828 return (ssl->ctx); 2829} 2830 2831int 2832SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2833{ 2834 return (X509_STORE_set_default_paths(ctx->cert_store)); 2835} 2836 2837int 2838SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2839 const char *CApath) 2840{ 2841 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2842} 2843 2844int 2845SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2846{ 2847 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2848} 2849 2850void 2851SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2852{ 2853 ssl->internal->info_callback = cb; 2854} 2855 2856void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2857{ 2858 return (ssl->internal->info_callback); 2859} 2860 2861int 2862SSL_state(const SSL *ssl) 2863{ 2864 return (S3I(ssl)->hs.state); 2865} 2866 2867void 2868SSL_set_state(SSL *ssl, int state) 2869{ 2870 S3I(ssl)->hs.state = state; 2871} 2872 2873void 2874SSL_set_verify_result(SSL *ssl, long arg) 2875{ 2876 ssl->verify_result = arg; 2877} 2878 2879long 2880SSL_get_verify_result(const SSL *ssl) 2881{ 2882 return (ssl->verify_result); 2883} 2884 2885int 2886SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2887 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2888{ 2889 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2890 new_func, dup_func, free_func)); 2891} 2892 2893int 2894SSL_set_ex_data(SSL *s, int idx, void *arg) 2895{ 2896 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2897} 2898 2899void * 2900SSL_get_ex_data(const SSL *s, int idx) 2901{ 2902 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2903} 2904 2905int 2906SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2907 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2908{ 2909 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2910 new_func, dup_func, free_func)); 2911} 2912 2913int 2914SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2915{ 2916 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2917} 2918 2919void * 2920SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2921{ 2922 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2923} 2924 2925int 2926ssl_ok(SSL *s) 2927{ 2928 return (1); 2929} 2930 2931X509_STORE * 2932SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2933{ 2934 return (ctx->cert_store); 2935} 2936 2937void 2938SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2939{ 2940 X509_STORE_free(ctx->cert_store); 2941 ctx->cert_store = store; 2942} 2943 2944X509 * 2945SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2946{ 2947 if (ctx->internal->cert == NULL) 2948 return NULL; 2949 2950 return ctx->internal->cert->key->x509; 2951} 2952 2953int 2954SSL_want(const SSL *s) 2955{ 2956 return (s->internal->rwstate); 2957} 2958 2959void 2960SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2961 int keylength)) 2962{ 2963 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2964} 2965 2966void 2967SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2968 int keylength)) 2969{ 2970 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2971} 2972 2973void 2974SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2975 int keylength)) 2976{ 2977 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2978} 2979 2980void 2981SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2982 int keylength)) 2983{ 2984 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2985} 2986 2987void 2988SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2989 int is_export, int keylength)) 2990{ 2991 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2992 (void (*)(void))ecdh); 2993} 2994 2995void 2996SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2997 int keylength)) 2998{ 2999 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3000} 3001 3002 3003void 3004SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3005 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3006{ 3007 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3008 (void (*)(void))cb); 3009} 3010 3011void 3012SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3013 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3014{ 3015 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3016} 3017 3018void 3019ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3020{ 3021 if (*hash) 3022 EVP_MD_CTX_destroy(*hash); 3023 *hash = NULL; 3024} 3025 3026void 3027SSL_set_debug(SSL *s, int debug) 3028{ 3029 s->internal->debug = debug; 3030} 3031 3032int 3033SSL_cache_hit(SSL *s) 3034{ 3035 return (s->internal->hit); 3036} 3037 3038int 3039SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3040{ 3041 return ctx->internal->min_version; 3042} 3043 3044int 3045SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3046{ 3047 return ssl_version_set_min(ctx->method, version, 3048 ctx->internal->max_version, &ctx->internal->min_version); 3049} 3050 3051int 3052SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3053{ 3054 return ctx->internal->max_version; 3055} 3056 3057int 3058SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3059{ 3060 return ssl_version_set_max(ctx->method, version, 3061 ctx->internal->min_version, &ctx->internal->max_version); 3062} 3063 3064int 3065SSL_get_min_proto_version(SSL *ssl) 3066{ 3067 return ssl->internal->min_version; 3068} 3069 3070int 3071SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3072{ 3073 return ssl_version_set_min(ssl->method, version, 3074 ssl->internal->max_version, &ssl->internal->min_version); 3075} 3076int 3077SSL_get_max_proto_version(SSL *ssl) 3078{ 3079 return ssl->internal->max_version; 3080} 3081 3082int 3083SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3084{ 3085 return ssl_version_set_max(ssl->method, version, 3086 ssl->internal->min_version, &ssl->internal->max_version); 3087} 3088 3089static int 3090ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3091{ 3092 SSL_CIPHER const *a = a_; 3093 SSL_CIPHER const *b = b_; 3094 return ssl_cipher_id_cmp(a, b); 3095} 3096 3097SSL_CIPHER * 3098OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3099{ 3100 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3101 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3102} 3103