ssl_lib.c revision 1.178
1/* $OpenBSD: ssl_lib.c,v 1.178 2018/02/22 17:29:25 jsing Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <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 943long 944SSL_get_default_timeout(const SSL *s) 945{ 946 return (s->method->internal->get_timeout()); 947} 948 949int 950SSL_read(SSL *s, void *buf, int num) 951{ 952 if (s->internal->handshake_func == NULL) { 953 SSLerror(s, SSL_R_UNINITIALIZED); 954 return (-1); 955 } 956 957 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 958 s->internal->rwstate = SSL_NOTHING; 959 return (0); 960 } 961 return (s->method->internal->ssl_read(s, buf, num)); 962} 963 964int 965SSL_peek(SSL *s, void *buf, int num) 966{ 967 if (s->internal->handshake_func == NULL) { 968 SSLerror(s, SSL_R_UNINITIALIZED); 969 return (-1); 970 } 971 972 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 973 return (0); 974 } 975 return (s->method->internal->ssl_peek(s, buf, num)); 976} 977 978int 979SSL_write(SSL *s, const void *buf, int num) 980{ 981 if (s->internal->handshake_func == NULL) { 982 SSLerror(s, SSL_R_UNINITIALIZED); 983 return (-1); 984 } 985 986 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 987 s->internal->rwstate = SSL_NOTHING; 988 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 989 return (-1); 990 } 991 return (s->method->internal->ssl_write(s, buf, num)); 992} 993 994int 995SSL_shutdown(SSL *s) 996{ 997 /* 998 * Note that this function behaves differently from what one might 999 * expect. Return values are 0 for no success (yet), 1000 * 1 for success; but calling it once is usually not enough, 1001 * even if blocking I/O is used (see ssl3_shutdown). 1002 */ 1003 1004 if (s->internal->handshake_func == NULL) { 1005 SSLerror(s, SSL_R_UNINITIALIZED); 1006 return (-1); 1007 } 1008 1009 if ((s != NULL) && !SSL_in_init(s)) 1010 return (s->method->internal->ssl_shutdown(s)); 1011 else 1012 return (1); 1013} 1014 1015int 1016SSL_renegotiate(SSL *s) 1017{ 1018 if (s->internal->renegotiate == 0) 1019 s->internal->renegotiate = 1; 1020 1021 s->internal->new_session = 1; 1022 1023 return (s->method->internal->ssl_renegotiate(s)); 1024} 1025 1026int 1027SSL_renegotiate_abbreviated(SSL *s) 1028{ 1029 if (s->internal->renegotiate == 0) 1030 s->internal->renegotiate = 1; 1031 1032 s->internal->new_session = 0; 1033 1034 return (s->method->internal->ssl_renegotiate(s)); 1035} 1036 1037int 1038SSL_renegotiate_pending(SSL *s) 1039{ 1040 /* 1041 * Becomes true when negotiation is requested; 1042 * false again once a handshake has finished. 1043 */ 1044 return (s->internal->renegotiate != 0); 1045} 1046 1047long 1048SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1049{ 1050 long l; 1051 1052 switch (cmd) { 1053 case SSL_CTRL_GET_READ_AHEAD: 1054 return (s->internal->read_ahead); 1055 case SSL_CTRL_SET_READ_AHEAD: 1056 l = s->internal->read_ahead; 1057 s->internal->read_ahead = larg; 1058 return (l); 1059 1060 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1061 s->internal->msg_callback_arg = parg; 1062 return (1); 1063 1064 case SSL_CTRL_OPTIONS: 1065 return (s->internal->options|=larg); 1066 case SSL_CTRL_CLEAR_OPTIONS: 1067 return (s->internal->options&=~larg); 1068 case SSL_CTRL_MODE: 1069 return (s->internal->mode|=larg); 1070 case SSL_CTRL_CLEAR_MODE: 1071 return (s->internal->mode &=~larg); 1072 case SSL_CTRL_GET_MAX_CERT_LIST: 1073 return (s->internal->max_cert_list); 1074 case SSL_CTRL_SET_MAX_CERT_LIST: 1075 l = s->internal->max_cert_list; 1076 s->internal->max_cert_list = larg; 1077 return (l); 1078 case SSL_CTRL_SET_MTU: 1079#ifndef OPENSSL_NO_DTLS1 1080 if (larg < (long)dtls1_min_mtu()) 1081 return (0); 1082#endif 1083 if (SSL_IS_DTLS(s)) { 1084 D1I(s)->mtu = larg; 1085 return (larg); 1086 } 1087 return (0); 1088 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1089 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1090 return (0); 1091 s->max_send_fragment = larg; 1092 return (1); 1093 case SSL_CTRL_GET_RI_SUPPORT: 1094 if (s->s3) 1095 return (S3I(s)->send_connection_binding); 1096 else return (0); 1097 default: 1098 if (SSL_IS_DTLS(s)) 1099 return dtls1_ctrl(s, cmd, larg, parg); 1100 return ssl3_ctrl(s, cmd, larg, parg); 1101 } 1102} 1103 1104long 1105SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1106{ 1107 switch (cmd) { 1108 case SSL_CTRL_SET_MSG_CALLBACK: 1109 s->internal->msg_callback = (void (*)(int write_p, int version, 1110 int content_type, const void *buf, size_t len, 1111 SSL *ssl, void *arg))(fp); 1112 return (1); 1113 1114 default: 1115 return (ssl3_callback_ctrl(s, cmd, fp)); 1116 } 1117} 1118 1119struct lhash_st_SSL_SESSION * 1120SSL_CTX_sessions(SSL_CTX *ctx) 1121{ 1122 return (ctx->internal->sessions); 1123} 1124 1125long 1126SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1127{ 1128 long l; 1129 1130 switch (cmd) { 1131 case SSL_CTRL_GET_READ_AHEAD: 1132 return (ctx->internal->read_ahead); 1133 case SSL_CTRL_SET_READ_AHEAD: 1134 l = ctx->internal->read_ahead; 1135 ctx->internal->read_ahead = larg; 1136 return (l); 1137 1138 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1139 ctx->internal->msg_callback_arg = parg; 1140 return (1); 1141 1142 case SSL_CTRL_GET_MAX_CERT_LIST: 1143 return (ctx->internal->max_cert_list); 1144 case SSL_CTRL_SET_MAX_CERT_LIST: 1145 l = ctx->internal->max_cert_list; 1146 ctx->internal->max_cert_list = larg; 1147 return (l); 1148 1149 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1150 l = ctx->internal->session_cache_size; 1151 ctx->internal->session_cache_size = larg; 1152 return (l); 1153 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1154 return (ctx->internal->session_cache_size); 1155 case SSL_CTRL_SET_SESS_CACHE_MODE: 1156 l = ctx->internal->session_cache_mode; 1157 ctx->internal->session_cache_mode = larg; 1158 return (l); 1159 case SSL_CTRL_GET_SESS_CACHE_MODE: 1160 return (ctx->internal->session_cache_mode); 1161 1162 case SSL_CTRL_SESS_NUMBER: 1163 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1164 case SSL_CTRL_SESS_CONNECT: 1165 return (ctx->internal->stats.sess_connect); 1166 case SSL_CTRL_SESS_CONNECT_GOOD: 1167 return (ctx->internal->stats.sess_connect_good); 1168 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1169 return (ctx->internal->stats.sess_connect_renegotiate); 1170 case SSL_CTRL_SESS_ACCEPT: 1171 return (ctx->internal->stats.sess_accept); 1172 case SSL_CTRL_SESS_ACCEPT_GOOD: 1173 return (ctx->internal->stats.sess_accept_good); 1174 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1175 return (ctx->internal->stats.sess_accept_renegotiate); 1176 case SSL_CTRL_SESS_HIT: 1177 return (ctx->internal->stats.sess_hit); 1178 case SSL_CTRL_SESS_CB_HIT: 1179 return (ctx->internal->stats.sess_cb_hit); 1180 case SSL_CTRL_SESS_MISSES: 1181 return (ctx->internal->stats.sess_miss); 1182 case SSL_CTRL_SESS_TIMEOUTS: 1183 return (ctx->internal->stats.sess_timeout); 1184 case SSL_CTRL_SESS_CACHE_FULL: 1185 return (ctx->internal->stats.sess_cache_full); 1186 case SSL_CTRL_OPTIONS: 1187 return (ctx->internal->options|=larg); 1188 case SSL_CTRL_CLEAR_OPTIONS: 1189 return (ctx->internal->options&=~larg); 1190 case SSL_CTRL_MODE: 1191 return (ctx->internal->mode|=larg); 1192 case SSL_CTRL_CLEAR_MODE: 1193 return (ctx->internal->mode&=~larg); 1194 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1195 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1196 return (0); 1197 ctx->internal->max_send_fragment = larg; 1198 return (1); 1199 default: 1200 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1201 } 1202} 1203 1204long 1205SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1206{ 1207 switch (cmd) { 1208 case SSL_CTRL_SET_MSG_CALLBACK: 1209 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1210 int content_type, const void *buf, size_t len, SSL *ssl, 1211 void *arg))(fp); 1212 return (1); 1213 1214 default: 1215 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1216 } 1217} 1218 1219int 1220ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1221{ 1222 long l; 1223 1224 l = a->id - b->id; 1225 if (l == 0L) 1226 return (0); 1227 else 1228 return ((l > 0) ? 1:-1); 1229} 1230 1231int 1232ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1233 const SSL_CIPHER * const *bp) 1234{ 1235 long l; 1236 1237 l = (*ap)->id - (*bp)->id; 1238 if (l == 0L) 1239 return (0); 1240 else 1241 return ((l > 0) ? 1:-1); 1242} 1243 1244/* 1245 * Return a STACK of the ciphers available for the SSL and in order of 1246 * preference. 1247 */ 1248STACK_OF(SSL_CIPHER) * 1249SSL_get_ciphers(const SSL *s) 1250{ 1251 if (s != NULL) { 1252 if (s->cipher_list != NULL) { 1253 return (s->cipher_list); 1254 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1255 return (s->ctx->cipher_list); 1256 } 1257 } 1258 return (NULL); 1259} 1260 1261/* 1262 * Return a STACK of the ciphers available for the SSL and in order of 1263 * algorithm id. 1264 */ 1265STACK_OF(SSL_CIPHER) * 1266ssl_get_ciphers_by_id(SSL *s) 1267{ 1268 if (s != NULL) { 1269 if (s->internal->cipher_list_by_id != NULL) { 1270 return (s->internal->cipher_list_by_id); 1271 } else if ((s->ctx != NULL) && 1272 (s->ctx->internal->cipher_list_by_id != NULL)) { 1273 return (s->ctx->internal->cipher_list_by_id); 1274 } 1275 } 1276 return (NULL); 1277} 1278 1279/* See if we have any ECC cipher suites. */ 1280int 1281ssl_has_ecc_ciphers(SSL *s) 1282{ 1283 STACK_OF(SSL_CIPHER) *ciphers; 1284 unsigned long alg_k, alg_a; 1285 SSL_CIPHER *cipher; 1286 int i; 1287 1288 if (s->version == DTLS1_VERSION) 1289 return 0; 1290 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1291 return 0; 1292 1293 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1294 cipher = sk_SSL_CIPHER_value(ciphers, i); 1295 1296 alg_k = cipher->algorithm_mkey; 1297 alg_a = cipher->algorithm_auth; 1298 1299 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1300 return 1; 1301 } 1302 1303 return 0; 1304} 1305 1306/* The old interface to get the same thing as SSL_get_ciphers(). */ 1307const char * 1308SSL_get_cipher_list(const SSL *s, int n) 1309{ 1310 SSL_CIPHER *c; 1311 STACK_OF(SSL_CIPHER) *sk; 1312 1313 if (s == NULL) 1314 return (NULL); 1315 sk = SSL_get_ciphers(s); 1316 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1317 return (NULL); 1318 c = sk_SSL_CIPHER_value(sk, n); 1319 if (c == NULL) 1320 return (NULL); 1321 return (c->name); 1322} 1323 1324STACK_OF(SSL_CIPHER) * 1325SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1326{ 1327 return ctx->cipher_list; 1328} 1329 1330/* Specify the ciphers to be used by default by the SSL_CTX. */ 1331int 1332SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1333{ 1334 STACK_OF(SSL_CIPHER) *sk; 1335 1336 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1337 &ctx->internal->cipher_list_by_id, str); 1338 /* 1339 * ssl_create_cipher_list may return an empty stack if it 1340 * was unable to find a cipher matching the given rule string 1341 * (for example if the rule string specifies a cipher which 1342 * has been disabled). This is not an error as far as 1343 * ssl_create_cipher_list is concerned, and hence 1344 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1345 * updated. 1346 */ 1347 if (sk == NULL) 1348 return (0); 1349 else if (sk_SSL_CIPHER_num(sk) == 0) { 1350 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1351 return (0); 1352 } 1353 return (1); 1354} 1355 1356/* Specify the ciphers to be used by the SSL. */ 1357int 1358SSL_set_cipher_list(SSL *s, const char *str) 1359{ 1360 STACK_OF(SSL_CIPHER) *sk; 1361 1362 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1363 &s->internal->cipher_list_by_id, str); 1364 /* see comment in SSL_CTX_set_cipher_list */ 1365 if (sk == NULL) 1366 return (0); 1367 else if (sk_SSL_CIPHER_num(sk) == 0) { 1368 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1369 return (0); 1370 } 1371 return (1); 1372} 1373 1374/* works well for SSLv2, not so good for SSLv3 */ 1375char * 1376SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1377{ 1378 char *end; 1379 STACK_OF(SSL_CIPHER) *sk; 1380 SSL_CIPHER *c; 1381 size_t curlen = 0; 1382 int i; 1383 1384 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1385 return (NULL); 1386 1387 sk = s->session->ciphers; 1388 if (sk_SSL_CIPHER_num(sk) == 0) 1389 return (NULL); 1390 1391 buf[0] = '\0'; 1392 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1393 c = sk_SSL_CIPHER_value(sk, i); 1394 end = buf + curlen; 1395 if (strlcat(buf, c->name, len) >= len || 1396 (curlen = strlcat(buf, ":", len)) >= len) { 1397 /* remove truncated cipher from list */ 1398 *end = '\0'; 1399 break; 1400 } 1401 } 1402 /* remove trailing colon */ 1403 if ((end = strrchr(buf, ':')) != NULL) 1404 *end = '\0'; 1405 return (buf); 1406} 1407 1408int 1409ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1410{ 1411 SSL_CIPHER *cipher; 1412 int num_ciphers = 0; 1413 int i; 1414 1415 if (ciphers == NULL) 1416 return 0; 1417 1418 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1419 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1420 return 0; 1421 1422 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1423 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1424 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1425 continue; 1426 1427 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1428 return 0; 1429 1430 num_ciphers++; 1431 } 1432 1433 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1434 if (num_ciphers > 0 && !s->internal->renegotiate) { 1435 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1436 return 0; 1437 } 1438 1439 if (!CBB_flush(cbb)) 1440 return 0; 1441 1442 return 1; 1443} 1444 1445STACK_OF(SSL_CIPHER) * 1446ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1447{ 1448 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1449 const SSL_CIPHER *cipher; 1450 uint16_t cipher_value, max_version; 1451 unsigned long cipher_id; 1452 1453 if (s->s3 != NULL) 1454 S3I(s)->send_connection_binding = 0; 1455 1456 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1457 SSLerror(s, ERR_R_MALLOC_FAILURE); 1458 goto err; 1459 } 1460 1461 while (CBS_len(cbs) > 0) { 1462 if (!CBS_get_u16(cbs, &cipher_value)) { 1463 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1464 goto err; 1465 } 1466 1467 cipher_id = SSL3_CK_ID | cipher_value; 1468 1469 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1470 /* 1471 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1472 * renegotiating. 1473 */ 1474 if (s->internal->renegotiate) { 1475 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1476 ssl3_send_alert(s, SSL3_AL_FATAL, 1477 SSL_AD_HANDSHAKE_FAILURE); 1478 1479 goto err; 1480 } 1481 S3I(s)->send_connection_binding = 1; 1482 continue; 1483 } 1484 1485 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1486 /* 1487 * TLS_FALLBACK_SCSV indicates that the client 1488 * previously tried a higher protocol version. 1489 * Fail if the current version is an unexpected 1490 * downgrade. 1491 */ 1492 max_version = ssl_max_server_version(s); 1493 if (max_version == 0 || s->version < max_version) { 1494 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1495 if (s->s3 != NULL) 1496 ssl3_send_alert(s, SSL3_AL_FATAL, 1497 SSL_AD_INAPPROPRIATE_FALLBACK); 1498 goto err; 1499 } 1500 continue; 1501 } 1502 1503 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1504 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1505 SSLerror(s, ERR_R_MALLOC_FAILURE); 1506 goto err; 1507 } 1508 } 1509 } 1510 1511 return (ciphers); 1512 1513err: 1514 sk_SSL_CIPHER_free(ciphers); 1515 1516 return (NULL); 1517} 1518 1519 1520/* 1521 * Return a servername extension value if provided in Client Hello, or NULL. 1522 * So far, only host_name types are defined (RFC 3546). 1523 */ 1524const char * 1525SSL_get_servername(const SSL *s, const int type) 1526{ 1527 if (type != TLSEXT_NAMETYPE_host_name) 1528 return (NULL); 1529 1530 return (s->session && !s->tlsext_hostname ? 1531 s->session->tlsext_hostname : 1532 s->tlsext_hostname); 1533} 1534 1535int 1536SSL_get_servername_type(const SSL *s) 1537{ 1538 if (s->session && 1539 (!s->tlsext_hostname ? 1540 s->session->tlsext_hostname : s->tlsext_hostname)) 1541 return (TLSEXT_NAMETYPE_host_name); 1542 return (-1); 1543} 1544 1545/* 1546 * SSL_select_next_proto implements standard protocol selection. It is 1547 * expected that this function is called from the callback set by 1548 * SSL_CTX_set_alpn_select_cb. 1549 * 1550 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1551 * strings. The length byte itself is not included in the length. A byte 1552 * string of length 0 is invalid. No byte string may be truncated. 1553 * 1554 * It returns either: 1555 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1556 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1557 */ 1558int 1559SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1560 const unsigned char *server, unsigned int server_len, 1561 const unsigned char *client, unsigned int client_len) 1562{ 1563 unsigned int i, j; 1564 const unsigned char *result; 1565 int status = OPENSSL_NPN_UNSUPPORTED; 1566 1567 /* 1568 * For each protocol in server preference order, 1569 * see if we support it. 1570 */ 1571 for (i = 0; i < server_len; ) { 1572 for (j = 0; j < client_len; ) { 1573 if (server[i] == client[j] && 1574 memcmp(&server[i + 1], 1575 &client[j + 1], server[i]) == 0) { 1576 /* We found a match */ 1577 result = &server[i]; 1578 status = OPENSSL_NPN_NEGOTIATED; 1579 goto found; 1580 } 1581 j += client[j]; 1582 j++; 1583 } 1584 i += server[i]; 1585 i++; 1586 } 1587 1588 /* There's no overlap between our protocols and the server's list. */ 1589 result = client; 1590 status = OPENSSL_NPN_NO_OVERLAP; 1591 1592found: 1593 *out = (unsigned char *) result + 1; 1594 *outlen = result[0]; 1595 return (status); 1596} 1597 1598/* SSL_get0_next_proto_negotiated is deprecated. */ 1599void 1600SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1601 unsigned *len) 1602{ 1603 *data = NULL; 1604 *len = 0; 1605} 1606 1607/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1608void 1609SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1610 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1611{ 1612} 1613 1614/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1615void 1616SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1617 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1618 unsigned int inlen, void *arg), void *arg) 1619{ 1620} 1621 1622/* 1623 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1624 * protocols, which must be in wire-format (i.e. a series of non-empty, 1625 * 8-bit length-prefixed strings). Returns 0 on success. 1626 */ 1627int 1628SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1629 unsigned int protos_len) 1630{ 1631 int failed = 1; 1632 1633 if (protos == NULL || protos_len == 0) 1634 goto err; 1635 1636 free(ctx->internal->alpn_client_proto_list); 1637 ctx->internal->alpn_client_proto_list = NULL; 1638 ctx->internal->alpn_client_proto_list_len = 0; 1639 1640 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1641 == NULL) 1642 goto err; 1643 ctx->internal->alpn_client_proto_list_len = protos_len; 1644 1645 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1646 1647 failed = 0; 1648 1649 err: 1650 /* NOTE: Return values are the reverse of what you expect. */ 1651 return (failed); 1652} 1653 1654/* 1655 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1656 * protocols, which must be in wire-format (i.e. a series of non-empty, 1657 * 8-bit length-prefixed strings). Returns 0 on success. 1658 */ 1659int 1660SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1661 unsigned int protos_len) 1662{ 1663 int failed = 1; 1664 1665 if (protos == NULL || protos_len == 0) 1666 goto err; 1667 1668 free(ssl->internal->alpn_client_proto_list); 1669 ssl->internal->alpn_client_proto_list = NULL; 1670 ssl->internal->alpn_client_proto_list_len = 0; 1671 1672 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1673 == NULL) 1674 goto err; 1675 ssl->internal->alpn_client_proto_list_len = protos_len; 1676 1677 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1678 1679 failed = 0; 1680 1681 err: 1682 /* NOTE: Return values are the reverse of what you expect. */ 1683 return (failed); 1684} 1685 1686/* 1687 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1688 * ClientHello processing in order to select an ALPN protocol from the 1689 * client's list of offered protocols. 1690 */ 1691void 1692SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1693 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1694 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1695{ 1696 ctx->internal->alpn_select_cb = cb; 1697 ctx->internal->alpn_select_cb_arg = arg; 1698} 1699 1700/* 1701 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1702 * it sets data to point to len bytes of protocol name (not including the 1703 * leading length-prefix byte). If the server didn't respond with* a negotiated 1704 * protocol then len will be zero. 1705 */ 1706void 1707SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1708 unsigned *len) 1709{ 1710 *data = NULL; 1711 *len = 0; 1712 1713 if (ssl->s3 != NULL) { 1714 *data = ssl->s3->internal->alpn_selected; 1715 *len = ssl->s3->internal->alpn_selected_len; 1716 } 1717} 1718 1719int 1720SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1721 const char *label, size_t llen, const unsigned char *p, size_t plen, 1722 int use_context) 1723{ 1724 return (tls1_export_keying_material(s, out, olen, 1725 label, llen, p, plen, use_context)); 1726} 1727 1728static unsigned long 1729ssl_session_hash(const SSL_SESSION *a) 1730{ 1731 unsigned long l; 1732 1733 l = (unsigned long) 1734 ((unsigned int) a->session_id[0] )| 1735 ((unsigned int) a->session_id[1]<< 8L)| 1736 ((unsigned long)a->session_id[2]<<16L)| 1737 ((unsigned long)a->session_id[3]<<24L); 1738 return (l); 1739} 1740 1741/* 1742 * NB: If this function (or indeed the hash function which uses a sort of 1743 * coarser function than this one) is changed, ensure 1744 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1745 * able to construct an SSL_SESSION that will collide with any existing session 1746 * with a matching session ID. 1747 */ 1748static int 1749ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1750{ 1751 if (a->ssl_version != b->ssl_version) 1752 return (1); 1753 if (a->session_id_length != b->session_id_length) 1754 return (1); 1755 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1756 return (1); 1757 return (0); 1758} 1759 1760/* 1761 * These wrapper functions should remain rather than redeclaring 1762 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1763 * variable. The reason is that the functions aren't static, they're exposed via 1764 * ssl.h. 1765 */ 1766static unsigned long 1767ssl_session_LHASH_HASH(const void *arg) 1768{ 1769 const SSL_SESSION *a = arg; 1770 1771 return ssl_session_hash(a); 1772} 1773 1774static int 1775ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1776{ 1777 const SSL_SESSION *a = arg1; 1778 const SSL_SESSION *b = arg2; 1779 1780 return ssl_session_cmp(a, b); 1781} 1782 1783SSL_CTX * 1784SSL_CTX_new(const SSL_METHOD *meth) 1785{ 1786 SSL_CTX *ret; 1787 1788 if (meth == NULL) { 1789 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1790 return (NULL); 1791 } 1792 1793 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1794 SSLerrorx(ERR_R_MALLOC_FAILURE); 1795 return (NULL); 1796 } 1797 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1798 free(ret); 1799 SSLerrorx(ERR_R_MALLOC_FAILURE); 1800 return (NULL); 1801 } 1802 1803 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1804 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1805 goto err; 1806 } 1807 1808 ret->method = meth; 1809 ret->internal->min_version = meth->internal->min_version; 1810 ret->internal->max_version = meth->internal->max_version; 1811 1812 ret->cert_store = NULL; 1813 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1814 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1815 ret->internal->session_cache_head = NULL; 1816 ret->internal->session_cache_tail = NULL; 1817 1818 /* We take the system default */ 1819 ret->session_timeout = meth->internal->get_timeout(); 1820 1821 ret->internal->new_session_cb = 0; 1822 ret->internal->remove_session_cb = 0; 1823 ret->internal->get_session_cb = 0; 1824 ret->internal->generate_session_id = 0; 1825 1826 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1827 1828 ret->references = 1; 1829 ret->internal->quiet_shutdown = 0; 1830 1831 ret->internal->info_callback = NULL; 1832 1833 ret->internal->app_verify_callback = 0; 1834 ret->internal->app_verify_arg = NULL; 1835 1836 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1837 ret->internal->read_ahead = 0; 1838 ret->internal->msg_callback = 0; 1839 ret->internal->msg_callback_arg = NULL; 1840 ret->verify_mode = SSL_VERIFY_NONE; 1841 ret->sid_ctx_length = 0; 1842 ret->internal->default_verify_callback = NULL; 1843 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1844 goto err; 1845 1846 ret->default_passwd_callback = 0; 1847 ret->default_passwd_callback_userdata = NULL; 1848 ret->internal->client_cert_cb = 0; 1849 ret->internal->app_gen_cookie_cb = 0; 1850 ret->internal->app_verify_cookie_cb = 0; 1851 1852 ret->internal->sessions = lh_SSL_SESSION_new(); 1853 if (ret->internal->sessions == NULL) 1854 goto err; 1855 ret->cert_store = X509_STORE_new(); 1856 if (ret->cert_store == NULL) 1857 goto err; 1858 1859 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1860 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1861 if (ret->cipher_list == NULL || 1862 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1863 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1864 goto err2; 1865 } 1866 1867 ret->param = X509_VERIFY_PARAM_new(); 1868 if (!ret->param) 1869 goto err; 1870 1871 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1872 goto err; 1873 1874 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1875 1876 ret->extra_certs = NULL; 1877 1878 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1879 1880 ret->internal->tlsext_servername_callback = 0; 1881 ret->internal->tlsext_servername_arg = NULL; 1882 1883 /* Setup RFC4507 ticket keys */ 1884 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1885 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1886 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1887 1888 ret->internal->tlsext_status_cb = 0; 1889 ret->internal->tlsext_status_arg = NULL; 1890 1891#ifndef OPENSSL_NO_ENGINE 1892 ret->internal->client_cert_engine = NULL; 1893#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1894#define eng_strx(x) #x 1895#define eng_str(x) eng_strx(x) 1896 /* Use specific client engine automatically... ignore errors */ 1897 { 1898 ENGINE *eng; 1899 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1900 if (!eng) { 1901 ERR_clear_error(); 1902 ENGINE_load_builtin_engines(); 1903 eng = ENGINE_by_id(eng_str( 1904 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1905 } 1906 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1907 ERR_clear_error(); 1908 } 1909#endif 1910#endif 1911 /* 1912 * Default is to connect to non-RI servers. When RI is more widely 1913 * deployed might change this. 1914 */ 1915 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1916 1917 return (ret); 1918err: 1919 SSLerrorx(ERR_R_MALLOC_FAILURE); 1920err2: 1921 SSL_CTX_free(ret); 1922 return (NULL); 1923} 1924 1925void 1926SSL_CTX_free(SSL_CTX *ctx) 1927{ 1928 int i; 1929 1930 if (ctx == NULL) 1931 return; 1932 1933 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1934 if (i > 0) 1935 return; 1936 1937 X509_VERIFY_PARAM_free(ctx->param); 1938 1939 /* 1940 * Free internal session cache. However: the remove_cb() may reference 1941 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1942 * after the sessions were flushed. 1943 * As the ex_data handling routines might also touch the session cache, 1944 * the most secure solution seems to be: empty (flush) the cache, then 1945 * free ex_data, then finally free the cache. 1946 * (See ticket [openssl.org #212].) 1947 */ 1948 if (ctx->internal->sessions != NULL) 1949 SSL_CTX_flush_sessions(ctx, 0); 1950 1951 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1952 1953 lh_SSL_SESSION_free(ctx->internal->sessions); 1954 1955 X509_STORE_free(ctx->cert_store); 1956 sk_SSL_CIPHER_free(ctx->cipher_list); 1957 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1958 ssl_cert_free(ctx->internal->cert); 1959 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1960 sk_X509_pop_free(ctx->extra_certs, X509_free); 1961 1962#ifndef OPENSSL_NO_SRTP 1963 if (ctx->internal->srtp_profiles) 1964 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1965#endif 1966 1967#ifndef OPENSSL_NO_ENGINE 1968 if (ctx->internal->client_cert_engine) 1969 ENGINE_finish(ctx->internal->client_cert_engine); 1970#endif 1971 1972 free(ctx->internal->tlsext_ecpointformatlist); 1973 free(ctx->internal->tlsext_supportedgroups); 1974 1975 free(ctx->internal->alpn_client_proto_list); 1976 1977 free(ctx->internal); 1978 free(ctx); 1979} 1980 1981int 1982SSL_CTX_up_ref(SSL_CTX *ctx) 1983{ 1984 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1985 return ((refs > 1) ? 1 : 0); 1986} 1987 1988void 1989SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1990{ 1991 ctx->default_passwd_callback = cb; 1992} 1993 1994void 1995SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1996{ 1997 ctx->default_passwd_callback_userdata = u; 1998} 1999 2000void 2001SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2002 void *), void *arg) 2003{ 2004 ctx->internal->app_verify_callback = cb; 2005 ctx->internal->app_verify_arg = arg; 2006} 2007 2008void 2009SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2010{ 2011 ctx->verify_mode = mode; 2012 ctx->internal->default_verify_callback = cb; 2013} 2014 2015void 2016SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2017{ 2018 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2019} 2020 2021void 2022ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2023{ 2024 int rsa_enc, rsa_sign, dh_tmp; 2025 int have_ecc_cert; 2026 unsigned long mask_k, mask_a; 2027 X509 *x = NULL; 2028 CERT_PKEY *cpk; 2029 2030 if (c == NULL) 2031 return; 2032 2033 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2034 c->dh_tmp_auto != 0); 2035 2036 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2037 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2038 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2039 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2040 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2041 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2042 2043 mask_k = 0; 2044 mask_a = 0; 2045 2046 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2047 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2048 mask_k |= SSL_kGOST; 2049 mask_a |= SSL_aGOST01; 2050 } 2051 2052 if (rsa_enc) 2053 mask_k |= SSL_kRSA; 2054 2055 if (dh_tmp) 2056 mask_k |= SSL_kDHE; 2057 2058 if (rsa_enc || rsa_sign) 2059 mask_a |= SSL_aRSA; 2060 2061 mask_a |= SSL_aNULL; 2062 2063 /* 2064 * An ECC certificate may be usable for ECDH and/or 2065 * ECDSA cipher suites depending on the key usage extension. 2066 */ 2067 if (have_ecc_cert) { 2068 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2069 2070 /* This call populates extension flags (ex_flags). */ 2071 X509_check_purpose(x, -1, 0); 2072 2073 /* Key usage, if present, must allow signing. */ 2074 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2075 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2076 mask_a |= SSL_aECDSA; 2077 } 2078 2079 mask_k |= SSL_kECDHE; 2080 2081 c->mask_k = mask_k; 2082 c->mask_a = mask_a; 2083 c->valid = 1; 2084} 2085 2086/* See if this handshake is using an ECC cipher suite. */ 2087int 2088ssl_using_ecc_cipher(SSL *s) 2089{ 2090 unsigned long alg_a, alg_k; 2091 2092 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2093 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2094 2095 return SSI(s)->tlsext_ecpointformatlist != NULL && 2096 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2097 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2098} 2099 2100int 2101ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2102{ 2103 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2104 unsigned long alg_a; 2105 2106 alg_a = cs->algorithm_auth; 2107 2108 if (alg_a & SSL_aECDSA) { 2109 /* This call populates extension flags (ex_flags). */ 2110 X509_check_purpose(x, -1, 0); 2111 2112 /* Key usage, if present, must allow signing. */ 2113 if ((x->ex_flags & EXFLAG_KUSAGE) && 2114 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2115 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2116 return (0); 2117 } 2118 } 2119 2120 return (1); 2121} 2122 2123CERT_PKEY * 2124ssl_get_server_send_pkey(const SSL *s) 2125{ 2126 unsigned long alg_a; 2127 CERT *c; 2128 int i; 2129 2130 c = s->cert; 2131 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2132 2133 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2134 2135 if (alg_a & SSL_aECDSA) { 2136 i = SSL_PKEY_ECC; 2137 } else if (alg_a & SSL_aRSA) { 2138 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2139 i = SSL_PKEY_RSA_SIGN; 2140 else 2141 i = SSL_PKEY_RSA_ENC; 2142 } else if (alg_a & SSL_aGOST01) { 2143 i = SSL_PKEY_GOST01; 2144 } else { /* if (alg_a & SSL_aNULL) */ 2145 SSLerror(s, ERR_R_INTERNAL_ERROR); 2146 return (NULL); 2147 } 2148 2149 return (c->pkeys + i); 2150} 2151 2152X509 * 2153ssl_get_server_send_cert(const SSL *s) 2154{ 2155 CERT_PKEY *cpk; 2156 2157 cpk = ssl_get_server_send_pkey(s); 2158 if (!cpk) 2159 return (NULL); 2160 return (cpk->x509); 2161} 2162 2163EVP_PKEY * 2164ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2165{ 2166 unsigned long alg_a; 2167 CERT *c; 2168 int idx = -1; 2169 2170 alg_a = cipher->algorithm_auth; 2171 c = s->cert; 2172 2173 if (alg_a & SSL_aRSA) { 2174 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2175 idx = SSL_PKEY_RSA_SIGN; 2176 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2177 idx = SSL_PKEY_RSA_ENC; 2178 } else if ((alg_a & SSL_aECDSA) && 2179 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2180 idx = SSL_PKEY_ECC; 2181 if (idx == -1) { 2182 SSLerror(s, ERR_R_INTERNAL_ERROR); 2183 return (NULL); 2184 } 2185 if (pmd) 2186 *pmd = c->pkeys[idx].digest; 2187 return (c->pkeys[idx].privatekey); 2188} 2189 2190DH * 2191ssl_get_auto_dh(SSL *s) 2192{ 2193 CERT_PKEY *cpk; 2194 int keylen; 2195 DH *dhp; 2196 2197 if (s->cert->dh_tmp_auto == 2) { 2198 keylen = 1024; 2199 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2200 keylen = 1024; 2201 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2202 keylen = 3072; 2203 } else { 2204 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2205 return (NULL); 2206 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2207 return (NULL); 2208 keylen = EVP_PKEY_bits(cpk->privatekey); 2209 } 2210 2211 if ((dhp = DH_new()) == NULL) 2212 return (NULL); 2213 2214 dhp->g = BN_new(); 2215 if (dhp->g != NULL) 2216 BN_set_word(dhp->g, 2); 2217 2218 if (keylen >= 8192) 2219 dhp->p = get_rfc3526_prime_8192(NULL); 2220 else if (keylen >= 4096) 2221 dhp->p = get_rfc3526_prime_4096(NULL); 2222 else if (keylen >= 3072) 2223 dhp->p = get_rfc3526_prime_3072(NULL); 2224 else if (keylen >= 2048) 2225 dhp->p = get_rfc3526_prime_2048(NULL); 2226 else if (keylen >= 1536) 2227 dhp->p = get_rfc3526_prime_1536(NULL); 2228 else 2229 dhp->p = get_rfc2409_prime_1024(NULL); 2230 2231 if (dhp->p == NULL || dhp->g == NULL) { 2232 DH_free(dhp); 2233 return (NULL); 2234 } 2235 return (dhp); 2236} 2237 2238void 2239ssl_update_cache(SSL *s, int mode) 2240{ 2241 int i; 2242 2243 /* 2244 * If the session_id_length is 0, we are not supposed to cache it, 2245 * and it would be rather hard to do anyway :-) 2246 */ 2247 if (s->session->session_id_length == 0) 2248 return; 2249 2250 i = s->session_ctx->internal->session_cache_mode; 2251 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2252 || SSL_CTX_add_session(s->session_ctx, s->session)) 2253 && (s->session_ctx->internal->new_session_cb != NULL)) { 2254 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2255 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2256 SSL_SESSION_free(s->session); 2257 } 2258 2259 /* auto flush every 255 connections */ 2260 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2261 ((i & mode) == mode)) { 2262 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2263 s->session_ctx->internal->stats.sess_connect_good : 2264 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2265 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2266 } 2267 } 2268} 2269 2270const SSL_METHOD * 2271SSL_get_ssl_method(SSL *s) 2272{ 2273 return (s->method); 2274} 2275 2276int 2277SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2278{ 2279 int conn = -1; 2280 int ret = 1; 2281 2282 if (s->method != meth) { 2283 if (s->internal->handshake_func != NULL) 2284 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2285 2286 if (s->method->internal->version == meth->internal->version) 2287 s->method = meth; 2288 else { 2289 s->method->internal->ssl_free(s); 2290 s->method = meth; 2291 ret = s->method->internal->ssl_new(s); 2292 } 2293 2294 if (conn == 1) 2295 s->internal->handshake_func = meth->internal->ssl_connect; 2296 else if (conn == 0) 2297 s->internal->handshake_func = meth->internal->ssl_accept; 2298 } 2299 return (ret); 2300} 2301 2302int 2303SSL_get_error(const SSL *s, int i) 2304{ 2305 int reason; 2306 unsigned long l; 2307 BIO *bio; 2308 2309 if (i > 0) 2310 return (SSL_ERROR_NONE); 2311 2312 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2313 * etc, where we do encode the error */ 2314 if ((l = ERR_peek_error()) != 0) { 2315 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2316 return (SSL_ERROR_SYSCALL); 2317 else 2318 return (SSL_ERROR_SSL); 2319 } 2320 2321 if ((i < 0) && SSL_want_read(s)) { 2322 bio = SSL_get_rbio(s); 2323 if (BIO_should_read(bio)) { 2324 return (SSL_ERROR_WANT_READ); 2325 } else if (BIO_should_write(bio)) { 2326 /* 2327 * This one doesn't make too much sense... We never 2328 * try to write to the rbio, and an application 2329 * program where rbio and wbio are separate couldn't 2330 * even know what it should wait for. However if we 2331 * ever set s->internal->rwstate incorrectly (so that we have 2332 * SSL_want_read(s) instead of SSL_want_write(s)) 2333 * and rbio and wbio *are* the same, this test works 2334 * around that bug; so it might be safer to keep it. 2335 */ 2336 return (SSL_ERROR_WANT_WRITE); 2337 } else if (BIO_should_io_special(bio)) { 2338 reason = BIO_get_retry_reason(bio); 2339 if (reason == BIO_RR_CONNECT) 2340 return (SSL_ERROR_WANT_CONNECT); 2341 else if (reason == BIO_RR_ACCEPT) 2342 return (SSL_ERROR_WANT_ACCEPT); 2343 else 2344 return (SSL_ERROR_SYSCALL); /* unknown */ 2345 } 2346 } 2347 2348 if ((i < 0) && SSL_want_write(s)) { 2349 bio = SSL_get_wbio(s); 2350 if (BIO_should_write(bio)) { 2351 return (SSL_ERROR_WANT_WRITE); 2352 } else if (BIO_should_read(bio)) { 2353 /* 2354 * See above (SSL_want_read(s) with 2355 * BIO_should_write(bio)) 2356 */ 2357 return (SSL_ERROR_WANT_READ); 2358 } else if (BIO_should_io_special(bio)) { 2359 reason = BIO_get_retry_reason(bio); 2360 if (reason == BIO_RR_CONNECT) 2361 return (SSL_ERROR_WANT_CONNECT); 2362 else if (reason == BIO_RR_ACCEPT) 2363 return (SSL_ERROR_WANT_ACCEPT); 2364 else 2365 return (SSL_ERROR_SYSCALL); 2366 } 2367 } 2368 if ((i < 0) && SSL_want_x509_lookup(s)) { 2369 return (SSL_ERROR_WANT_X509_LOOKUP); 2370 } 2371 2372 if (i == 0) { 2373 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2374 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2375 return (SSL_ERROR_ZERO_RETURN); 2376 } 2377 return (SSL_ERROR_SYSCALL); 2378} 2379 2380int 2381SSL_do_handshake(SSL *s) 2382{ 2383 int ret = 1; 2384 2385 if (s->internal->handshake_func == NULL) { 2386 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2387 return (-1); 2388 } 2389 2390 s->method->internal->ssl_renegotiate_check(s); 2391 2392 if (SSL_in_init(s) || SSL_in_before(s)) { 2393 ret = s->internal->handshake_func(s); 2394 } 2395 return (ret); 2396} 2397 2398/* 2399 * For the next 2 functions, SSL_clear() sets shutdown and so 2400 * one of these calls will reset it 2401 */ 2402void 2403SSL_set_accept_state(SSL *s) 2404{ 2405 s->server = 1; 2406 s->internal->shutdown = 0; 2407 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2408 s->internal->handshake_func = s->method->internal->ssl_accept; 2409 /* clear the current cipher */ 2410 ssl_clear_cipher_ctx(s); 2411 ssl_clear_hash_ctx(&s->read_hash); 2412 ssl_clear_hash_ctx(&s->internal->write_hash); 2413} 2414 2415void 2416SSL_set_connect_state(SSL *s) 2417{ 2418 s->server = 0; 2419 s->internal->shutdown = 0; 2420 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2421 s->internal->handshake_func = s->method->internal->ssl_connect; 2422 /* clear the current cipher */ 2423 ssl_clear_cipher_ctx(s); 2424 ssl_clear_hash_ctx(&s->read_hash); 2425 ssl_clear_hash_ctx(&s->internal->write_hash); 2426} 2427 2428int 2429ssl_undefined_function(SSL *s) 2430{ 2431 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2432 return (0); 2433} 2434 2435int 2436ssl_undefined_void_function(void) 2437{ 2438 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2439 return (0); 2440} 2441 2442int 2443ssl_undefined_const_function(const SSL *s) 2444{ 2445 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2446 return (0); 2447} 2448 2449const char * 2450ssl_version_string(int ver) 2451{ 2452 switch (ver) { 2453 case DTLS1_VERSION: 2454 return (SSL_TXT_DTLS1); 2455 case TLS1_VERSION: 2456 return (SSL_TXT_TLSV1); 2457 case TLS1_1_VERSION: 2458 return (SSL_TXT_TLSV1_1); 2459 case TLS1_2_VERSION: 2460 return (SSL_TXT_TLSV1_2); 2461 default: 2462 return ("unknown"); 2463 } 2464} 2465 2466const char * 2467SSL_get_version(const SSL *s) 2468{ 2469 return ssl_version_string(s->version); 2470} 2471 2472SSL * 2473SSL_dup(SSL *s) 2474{ 2475 STACK_OF(X509_NAME) *sk; 2476 X509_NAME *xn; 2477 SSL *ret; 2478 int i; 2479 2480 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2481 return (NULL); 2482 2483 ret->version = s->version; 2484 ret->internal->type = s->internal->type; 2485 ret->method = s->method; 2486 2487 if (s->session != NULL) { 2488 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2489 SSL_copy_session_id(ret, s); 2490 } else { 2491 /* 2492 * No session has been established yet, so we have to expect 2493 * that s->cert or ret->cert will be changed later -- 2494 * they should not both point to the same object, 2495 * and thus we can't use SSL_copy_session_id. 2496 */ 2497 2498 ret->method->internal->ssl_free(ret); 2499 ret->method = s->method; 2500 ret->method->internal->ssl_new(ret); 2501 2502 if (s->cert != NULL) { 2503 ssl_cert_free(ret->cert); 2504 ret->cert = ssl_cert_dup(s->cert); 2505 if (ret->cert == NULL) 2506 goto err; 2507 } 2508 2509 SSL_set_session_id_context(ret, 2510 s->sid_ctx, s->sid_ctx_length); 2511 } 2512 2513 ret->internal->options = s->internal->options; 2514 ret->internal->mode = s->internal->mode; 2515 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2516 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2517 ret->internal->msg_callback = s->internal->msg_callback; 2518 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2519 SSL_set_verify(ret, SSL_get_verify_mode(s), 2520 SSL_get_verify_callback(s)); 2521 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2522 ret->internal->generate_session_id = s->internal->generate_session_id; 2523 2524 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2525 2526 ret->internal->debug = s->internal->debug; 2527 2528 /* copy app data, a little dangerous perhaps */ 2529 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2530 &ret->internal->ex_data, &s->internal->ex_data)) 2531 goto err; 2532 2533 /* setup rbio, and wbio */ 2534 if (s->rbio != NULL) { 2535 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2536 goto err; 2537 } 2538 if (s->wbio != NULL) { 2539 if (s->wbio != s->rbio) { 2540 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2541 goto err; 2542 } else 2543 ret->wbio = ret->rbio; 2544 } 2545 ret->internal->rwstate = s->internal->rwstate; 2546 ret->internal->in_handshake = s->internal->in_handshake; 2547 ret->internal->handshake_func = s->internal->handshake_func; 2548 ret->server = s->server; 2549 ret->internal->renegotiate = s->internal->renegotiate; 2550 ret->internal->new_session = s->internal->new_session; 2551 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2552 ret->internal->shutdown = s->internal->shutdown; 2553 /* SSL_dup does not really work at any state, though */ 2554 S3I(ret)->hs.state = S3I(s)->hs.state; 2555 ret->internal->rstate = s->internal->rstate; 2556 2557 /* 2558 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2559 * ret->init_off 2560 */ 2561 ret->internal->init_num = 0; 2562 2563 ret->internal->hit = s->internal->hit; 2564 2565 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2566 2567 /* dup the cipher_list and cipher_list_by_id stacks */ 2568 if (s->cipher_list != NULL) { 2569 if ((ret->cipher_list = 2570 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2571 goto err; 2572 } 2573 if (s->internal->cipher_list_by_id != NULL) { 2574 if ((ret->internal->cipher_list_by_id = 2575 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2576 goto err; 2577 } 2578 2579 /* Dup the client_CA list */ 2580 if (s->internal->client_CA != NULL) { 2581 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2582 ret->internal->client_CA = sk; 2583 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2584 xn = sk_X509_NAME_value(sk, i); 2585 if (sk_X509_NAME_set(sk, i, 2586 X509_NAME_dup(xn)) == NULL) { 2587 X509_NAME_free(xn); 2588 goto err; 2589 } 2590 } 2591 } 2592 2593 if (0) { 2594err: 2595 if (ret != NULL) 2596 SSL_free(ret); 2597 ret = NULL; 2598 } 2599 return (ret); 2600} 2601 2602void 2603ssl_clear_cipher_ctx(SSL *s) 2604{ 2605 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2606 s->enc_read_ctx = NULL; 2607 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2608 s->internal->enc_write_ctx = NULL; 2609 2610 if (s->internal->aead_read_ctx != NULL) { 2611 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2612 free(s->internal->aead_read_ctx); 2613 s->internal->aead_read_ctx = NULL; 2614 } 2615 if (s->internal->aead_write_ctx != NULL) { 2616 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2617 free(s->internal->aead_write_ctx); 2618 s->internal->aead_write_ctx = NULL; 2619 } 2620 2621} 2622 2623/* Fix this function so that it takes an optional type parameter */ 2624X509 * 2625SSL_get_certificate(const SSL *s) 2626{ 2627 if (s->cert != NULL) 2628 return (s->cert->key->x509); 2629 else 2630 return (NULL); 2631} 2632 2633/* Fix this function so that it takes an optional type parameter */ 2634EVP_PKEY * 2635SSL_get_privatekey(SSL *s) 2636{ 2637 if (s->cert != NULL) 2638 return (s->cert->key->privatekey); 2639 else 2640 return (NULL); 2641} 2642 2643const SSL_CIPHER * 2644SSL_get_current_cipher(const SSL *s) 2645{ 2646 if ((s->session != NULL) && (s->session->cipher != NULL)) 2647 return (s->session->cipher); 2648 return (NULL); 2649} 2650const void * 2651SSL_get_current_compression(SSL *s) 2652{ 2653 return (NULL); 2654} 2655 2656const void * 2657SSL_get_current_expansion(SSL *s) 2658{ 2659 return (NULL); 2660} 2661 2662size_t 2663SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2664{ 2665 size_t len = sizeof(s->s3->client_random); 2666 2667 if (out == NULL) 2668 return len; 2669 2670 if (len > max_out) 2671 len = max_out; 2672 2673 memcpy(out, s->s3->client_random, len); 2674 2675 return len; 2676} 2677 2678size_t 2679SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2680{ 2681 size_t len = sizeof(s->s3->server_random); 2682 2683 if (out == NULL) 2684 return len; 2685 2686 if (len > max_out) 2687 len = max_out; 2688 2689 memcpy(out, s->s3->server_random, len); 2690 2691 return len; 2692} 2693 2694int 2695ssl_init_wbio_buffer(SSL *s, int push) 2696{ 2697 BIO *bbio; 2698 2699 if (s->bbio == NULL) { 2700 bbio = BIO_new(BIO_f_buffer()); 2701 if (bbio == NULL) 2702 return (0); 2703 s->bbio = bbio; 2704 } else { 2705 bbio = s->bbio; 2706 if (s->bbio == s->wbio) 2707 s->wbio = BIO_pop(s->wbio); 2708 } 2709 (void)BIO_reset(bbio); 2710/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2711 if (!BIO_set_read_buffer_size(bbio, 1)) { 2712 SSLerror(s, ERR_R_BUF_LIB); 2713 return (0); 2714 } 2715 if (push) { 2716 if (s->wbio != bbio) 2717 s->wbio = BIO_push(bbio, s->wbio); 2718 } else { 2719 if (s->wbio == bbio) 2720 s->wbio = BIO_pop(bbio); 2721 } 2722 return (1); 2723} 2724 2725void 2726ssl_free_wbio_buffer(SSL *s) 2727{ 2728 if (s == NULL) 2729 return; 2730 2731 if (s->bbio == NULL) 2732 return; 2733 2734 if (s->bbio == s->wbio) { 2735 /* remove buffering */ 2736 s->wbio = BIO_pop(s->wbio); 2737 } 2738 BIO_free(s->bbio); 2739 s->bbio = NULL; 2740} 2741 2742void 2743SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2744{ 2745 ctx->internal->quiet_shutdown = mode; 2746} 2747 2748int 2749SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2750{ 2751 return (ctx->internal->quiet_shutdown); 2752} 2753 2754void 2755SSL_set_quiet_shutdown(SSL *s, int mode) 2756{ 2757 s->internal->quiet_shutdown = mode; 2758} 2759 2760int 2761SSL_get_quiet_shutdown(const SSL *s) 2762{ 2763 return (s->internal->quiet_shutdown); 2764} 2765 2766void 2767SSL_set_shutdown(SSL *s, int mode) 2768{ 2769 s->internal->shutdown = mode; 2770} 2771 2772int 2773SSL_get_shutdown(const SSL *s) 2774{ 2775 return (s->internal->shutdown); 2776} 2777 2778int 2779SSL_version(const SSL *s) 2780{ 2781 return (s->version); 2782} 2783 2784SSL_CTX * 2785SSL_get_SSL_CTX(const SSL *ssl) 2786{ 2787 return (ssl->ctx); 2788} 2789 2790SSL_CTX * 2791SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2792{ 2793 CERT *ocert = ssl->cert; 2794 2795 if (ssl->ctx == ctx) 2796 return (ssl->ctx); 2797 if (ctx == NULL) 2798 ctx = ssl->initial_ctx; 2799 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2800 if (ocert != NULL) { 2801 int i; 2802 /* Copy negotiated digests from original certificate. */ 2803 for (i = 0; i < SSL_PKEY_NUM; i++) 2804 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2805 ssl_cert_free(ocert); 2806 } 2807 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2808 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2809 ssl->ctx = ctx; 2810 return (ssl->ctx); 2811} 2812 2813int 2814SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2815{ 2816 return (X509_STORE_set_default_paths(ctx->cert_store)); 2817} 2818 2819int 2820SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2821 const char *CApath) 2822{ 2823 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2824} 2825 2826int 2827SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2828{ 2829 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2830} 2831 2832void 2833SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2834{ 2835 ssl->internal->info_callback = cb; 2836} 2837 2838void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2839{ 2840 return (ssl->internal->info_callback); 2841} 2842 2843int 2844SSL_state(const SSL *ssl) 2845{ 2846 return (S3I(ssl)->hs.state); 2847} 2848 2849void 2850SSL_set_state(SSL *ssl, int state) 2851{ 2852 S3I(ssl)->hs.state = state; 2853} 2854 2855void 2856SSL_set_verify_result(SSL *ssl, long arg) 2857{ 2858 ssl->verify_result = arg; 2859} 2860 2861long 2862SSL_get_verify_result(const SSL *ssl) 2863{ 2864 return (ssl->verify_result); 2865} 2866 2867int 2868SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2869 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2870{ 2871 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2872 new_func, dup_func, free_func)); 2873} 2874 2875int 2876SSL_set_ex_data(SSL *s, int idx, void *arg) 2877{ 2878 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2879} 2880 2881void * 2882SSL_get_ex_data(const SSL *s, int idx) 2883{ 2884 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2885} 2886 2887int 2888SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2889 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2890{ 2891 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2892 new_func, dup_func, free_func)); 2893} 2894 2895int 2896SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2897{ 2898 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2899} 2900 2901void * 2902SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2903{ 2904 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2905} 2906 2907int 2908ssl_ok(SSL *s) 2909{ 2910 return (1); 2911} 2912 2913X509_STORE * 2914SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2915{ 2916 return (ctx->cert_store); 2917} 2918 2919void 2920SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2921{ 2922 X509_STORE_free(ctx->cert_store); 2923 ctx->cert_store = store; 2924} 2925 2926X509 * 2927SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2928{ 2929 if (ctx->internal->cert == NULL) 2930 return NULL; 2931 2932 return ctx->internal->cert->key->x509; 2933} 2934 2935int 2936SSL_want(const SSL *s) 2937{ 2938 return (s->internal->rwstate); 2939} 2940 2941void 2942SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2943 int keylength)) 2944{ 2945 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2946} 2947 2948void 2949SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2950 int keylength)) 2951{ 2952 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2953} 2954 2955void 2956SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2957 int keylength)) 2958{ 2959 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2960} 2961 2962void 2963SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2964 int keylength)) 2965{ 2966 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2967} 2968 2969void 2970SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2971 int is_export, int keylength)) 2972{ 2973 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2974 (void (*)(void))ecdh); 2975} 2976 2977void 2978SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2979 int keylength)) 2980{ 2981 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2982} 2983 2984 2985void 2986SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2987 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2988{ 2989 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2990 (void (*)(void))cb); 2991} 2992 2993void 2994SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2995 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2996{ 2997 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2998} 2999 3000void 3001ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3002{ 3003 if (*hash) 3004 EVP_MD_CTX_destroy(*hash); 3005 *hash = NULL; 3006} 3007 3008void 3009SSL_set_debug(SSL *s, int debug) 3010{ 3011 s->internal->debug = debug; 3012} 3013 3014int 3015SSL_cache_hit(SSL *s) 3016{ 3017 return (s->internal->hit); 3018} 3019 3020int 3021SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3022{ 3023 return ssl_version_set_min(ctx->method, version, 3024 ctx->internal->max_version, &ctx->internal->min_version); 3025} 3026 3027int 3028SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3029{ 3030 return ssl_version_set_max(ctx->method, version, 3031 ctx->internal->min_version, &ctx->internal->max_version); 3032} 3033 3034int 3035SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3036{ 3037 return ssl_version_set_min(ssl->method, version, 3038 ssl->internal->max_version, &ssl->internal->min_version); 3039} 3040 3041int 3042SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3043{ 3044 return ssl_version_set_max(ssl->method, version, 3045 ssl->internal->min_version, &ssl->internal->max_version); 3046} 3047 3048static int 3049ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3050{ 3051 SSL_CIPHER const *a = a_; 3052 SSL_CIPHER const *b = b_; 3053 return ssl_cipher_id_cmp(a, b); 3054} 3055 3056SSL_CIPHER * 3057OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3058{ 3059 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3060 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3061} 3062