ssl_lib.c revision 1.177
1/* $OpenBSD: ssl_lib.c,v 1.177 2018/02/22 17:27:07 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 571void 572SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 573{ 574 /* If the output buffering BIO is still in place, remove it */ 575 if (s->bbio != NULL) { 576 if (s->wbio == s->bbio) { 577 s->wbio = s->wbio->next_bio; 578 s->bbio->next_bio = NULL; 579 } 580 } 581 582 if (s->rbio != rbio && s->rbio != s->wbio) 583 BIO_free_all(s->rbio); 584 if (s->wbio != wbio) 585 BIO_free_all(s->wbio); 586 s->rbio = rbio; 587 s->wbio = wbio; 588} 589 590BIO * 591SSL_get_rbio(const SSL *s) 592{ 593 return (s->rbio); 594} 595 596BIO * 597SSL_get_wbio(const SSL *s) 598{ 599 return (s->wbio); 600} 601 602int 603SSL_get_fd(const SSL *s) 604{ 605 return (SSL_get_rfd(s)); 606} 607 608int 609SSL_get_rfd(const SSL *s) 610{ 611 int ret = -1; 612 BIO *b, *r; 613 614 b = SSL_get_rbio(s); 615 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 616 if (r != NULL) 617 BIO_get_fd(r, &ret); 618 return (ret); 619} 620 621int 622SSL_get_wfd(const SSL *s) 623{ 624 int ret = -1; 625 BIO *b, *r; 626 627 b = SSL_get_wbio(s); 628 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 629 if (r != NULL) 630 BIO_get_fd(r, &ret); 631 return (ret); 632} 633 634int 635SSL_set_fd(SSL *s, int fd) 636{ 637 int ret = 0; 638 BIO *bio = NULL; 639 640 bio = BIO_new(BIO_s_socket()); 641 642 if (bio == NULL) { 643 SSLerror(s, ERR_R_BUF_LIB); 644 goto err; 645 } 646 BIO_set_fd(bio, fd, BIO_NOCLOSE); 647 SSL_set_bio(s, bio, bio); 648 ret = 1; 649err: 650 return (ret); 651} 652 653int 654SSL_set_wfd(SSL *s, int fd) 655{ 656 int ret = 0; 657 BIO *bio = NULL; 658 659 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 660 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 661 bio = BIO_new(BIO_s_socket()); 662 663 if (bio == NULL) { 664 SSLerror(s, ERR_R_BUF_LIB); 665 goto err; 666 } 667 BIO_set_fd(bio, fd, BIO_NOCLOSE); 668 SSL_set_bio(s, SSL_get_rbio(s), bio); 669 } else 670 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 671 ret = 1; 672err: 673 return (ret); 674} 675 676int 677SSL_set_rfd(SSL *s, int fd) 678{ 679 int ret = 0; 680 BIO *bio = NULL; 681 682 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 683 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 684 bio = BIO_new(BIO_s_socket()); 685 686 if (bio == NULL) { 687 SSLerror(s, ERR_R_BUF_LIB); 688 goto err; 689 } 690 BIO_set_fd(bio, fd, BIO_NOCLOSE); 691 SSL_set_bio(s, bio, SSL_get_wbio(s)); 692 } else 693 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 694 ret = 1; 695err: 696 return (ret); 697} 698 699 700/* return length of latest Finished message we sent, copy to 'buf' */ 701size_t 702SSL_get_finished(const SSL *s, void *buf, size_t count) 703{ 704 size_t ret = 0; 705 706 if (s->s3 != NULL) { 707 ret = S3I(s)->tmp.finish_md_len; 708 if (count > ret) 709 count = ret; 710 memcpy(buf, S3I(s)->tmp.finish_md, count); 711 } 712 return (ret); 713} 714 715/* return length of latest Finished message we expected, copy to 'buf' */ 716size_t 717SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 718{ 719 size_t ret = 0; 720 721 if (s->s3 != NULL) { 722 ret = S3I(s)->tmp.peer_finish_md_len; 723 if (count > ret) 724 count = ret; 725 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 726 } 727 return (ret); 728} 729 730 731int 732SSL_get_verify_mode(const SSL *s) 733{ 734 return (s->verify_mode); 735} 736 737int 738SSL_get_verify_depth(const SSL *s) 739{ 740 return (X509_VERIFY_PARAM_get_depth(s->param)); 741} 742 743int 744(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 745{ 746 return (s->internal->verify_callback); 747} 748 749int 750SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 751{ 752 return (ctx->verify_mode); 753} 754 755int 756SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 757{ 758 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 759} 760 761int 762(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 763{ 764 return (ctx->internal->default_verify_callback); 765} 766 767void 768SSL_set_verify(SSL *s, int mode, 769 int (*callback)(int ok, X509_STORE_CTX *ctx)) 770{ 771 s->verify_mode = mode; 772 if (callback != NULL) 773 s->internal->verify_callback = callback; 774} 775 776void 777SSL_set_verify_depth(SSL *s, int depth) 778{ 779 X509_VERIFY_PARAM_set_depth(s->param, depth); 780} 781 782void 783SSL_set_read_ahead(SSL *s, int yes) 784{ 785 s->internal->read_ahead = yes; 786} 787 788int 789SSL_get_read_ahead(const SSL *s) 790{ 791 return (s->internal->read_ahead); 792} 793 794int 795SSL_pending(const SSL *s) 796{ 797 /* 798 * SSL_pending cannot work properly if read-ahead is enabled 799 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 800 * and it is impossible to fix since SSL_pending cannot report 801 * errors that may be observed while scanning the new data. 802 * (Note that SSL_pending() is often used as a boolean value, 803 * so we'd better not return -1.) 804 */ 805 return (s->method->internal->ssl_pending(s)); 806} 807 808X509 * 809SSL_get_peer_certificate(const SSL *s) 810{ 811 X509 *r; 812 813 if ((s == NULL) || (s->session == NULL)) 814 r = NULL; 815 else 816 r = s->session->peer; 817 818 if (r == NULL) 819 return (r); 820 821 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 822 823 return (r); 824} 825 826STACK_OF(X509) * 827SSL_get_peer_cert_chain(const SSL *s) 828{ 829 STACK_OF(X509) *r; 830 831 if ((s == NULL) || (s->session == NULL) || 832 (SSI(s)->sess_cert == NULL)) 833 r = NULL; 834 else 835 r = SSI(s)->sess_cert->cert_chain; 836 837 /* 838 * If we are a client, cert_chain includes the peer's own 839 * certificate; 840 * if we are a server, it does not. 841 */ 842 return (r); 843} 844 845/* 846 * Now in theory, since the calling process own 't' it should be safe to 847 * modify. We need to be able to read f without being hassled 848 */ 849void 850SSL_copy_session_id(SSL *t, const SSL *f) 851{ 852 CERT *tmp; 853 854 /* Do we need to to SSL locking? */ 855 SSL_set_session(t, SSL_get_session(f)); 856 857 /* 858 * What if we are setup as SSLv2 but want to talk SSLv3 or 859 * vice-versa. 860 */ 861 if (t->method != f->method) { 862 t->method->internal->ssl_free(t); /* cleanup current */ 863 t->method = f->method; /* change method */ 864 t->method->internal->ssl_new(t); /* setup new */ 865 } 866 867 tmp = t->cert; 868 if (f->cert != NULL) { 869 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 870 t->cert = f->cert; 871 } else 872 t->cert = NULL; 873 ssl_cert_free(tmp); 874 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 875} 876 877/* Fix this so it checks all the valid key/cert options */ 878int 879SSL_CTX_check_private_key(const SSL_CTX *ctx) 880{ 881 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 882 (ctx->internal->cert->key->x509 == NULL)) { 883 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 884 return (0); 885 } 886 if (ctx->internal->cert->key->privatekey == NULL) { 887 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 888 return (0); 889 } 890 return (X509_check_private_key(ctx->internal->cert->key->x509, 891 ctx->internal->cert->key->privatekey)); 892} 893 894/* Fix this function so that it takes an optional type parameter */ 895int 896SSL_check_private_key(const SSL *ssl) 897{ 898 if (ssl == NULL) { 899 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 900 return (0); 901 } 902 if (ssl->cert == NULL) { 903 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 904 return (0); 905 } 906 if (ssl->cert->key->x509 == NULL) { 907 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 908 return (0); 909 } 910 if (ssl->cert->key->privatekey == NULL) { 911 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 912 return (0); 913 } 914 return (X509_check_private_key(ssl->cert->key->x509, 915 ssl->cert->key->privatekey)); 916} 917 918int 919SSL_accept(SSL *s) 920{ 921 if (s->internal->handshake_func == NULL) 922 SSL_set_accept_state(s); /* Not properly initialized yet */ 923 924 return (s->method->internal->ssl_accept(s)); 925} 926 927int 928SSL_connect(SSL *s) 929{ 930 if (s->internal->handshake_func == NULL) 931 SSL_set_connect_state(s); /* Not properly initialized yet */ 932 933 return (s->method->internal->ssl_connect(s)); 934} 935 936long 937SSL_get_default_timeout(const SSL *s) 938{ 939 return (s->method->internal->get_timeout()); 940} 941 942int 943SSL_read(SSL *s, void *buf, int num) 944{ 945 if (s->internal->handshake_func == NULL) { 946 SSLerror(s, SSL_R_UNINITIALIZED); 947 return (-1); 948 } 949 950 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 951 s->internal->rwstate = SSL_NOTHING; 952 return (0); 953 } 954 return (s->method->internal->ssl_read(s, buf, num)); 955} 956 957int 958SSL_peek(SSL *s, void *buf, int num) 959{ 960 if (s->internal->handshake_func == NULL) { 961 SSLerror(s, SSL_R_UNINITIALIZED); 962 return (-1); 963 } 964 965 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 966 return (0); 967 } 968 return (s->method->internal->ssl_peek(s, buf, num)); 969} 970 971int 972SSL_write(SSL *s, const void *buf, int num) 973{ 974 if (s->internal->handshake_func == NULL) { 975 SSLerror(s, SSL_R_UNINITIALIZED); 976 return (-1); 977 } 978 979 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 980 s->internal->rwstate = SSL_NOTHING; 981 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 982 return (-1); 983 } 984 return (s->method->internal->ssl_write(s, buf, num)); 985} 986 987int 988SSL_shutdown(SSL *s) 989{ 990 /* 991 * Note that this function behaves differently from what one might 992 * expect. Return values are 0 for no success (yet), 993 * 1 for success; but calling it once is usually not enough, 994 * even if blocking I/O is used (see ssl3_shutdown). 995 */ 996 997 if (s->internal->handshake_func == NULL) { 998 SSLerror(s, SSL_R_UNINITIALIZED); 999 return (-1); 1000 } 1001 1002 if ((s != NULL) && !SSL_in_init(s)) 1003 return (s->method->internal->ssl_shutdown(s)); 1004 else 1005 return (1); 1006} 1007 1008int 1009SSL_renegotiate(SSL *s) 1010{ 1011 if (s->internal->renegotiate == 0) 1012 s->internal->renegotiate = 1; 1013 1014 s->internal->new_session = 1; 1015 1016 return (s->method->internal->ssl_renegotiate(s)); 1017} 1018 1019int 1020SSL_renegotiate_abbreviated(SSL *s) 1021{ 1022 if (s->internal->renegotiate == 0) 1023 s->internal->renegotiate = 1; 1024 1025 s->internal->new_session = 0; 1026 1027 return (s->method->internal->ssl_renegotiate(s)); 1028} 1029 1030int 1031SSL_renegotiate_pending(SSL *s) 1032{ 1033 /* 1034 * Becomes true when negotiation is requested; 1035 * false again once a handshake has finished. 1036 */ 1037 return (s->internal->renegotiate != 0); 1038} 1039 1040long 1041SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1042{ 1043 long l; 1044 1045 switch (cmd) { 1046 case SSL_CTRL_GET_READ_AHEAD: 1047 return (s->internal->read_ahead); 1048 case SSL_CTRL_SET_READ_AHEAD: 1049 l = s->internal->read_ahead; 1050 s->internal->read_ahead = larg; 1051 return (l); 1052 1053 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1054 s->internal->msg_callback_arg = parg; 1055 return (1); 1056 1057 case SSL_CTRL_OPTIONS: 1058 return (s->internal->options|=larg); 1059 case SSL_CTRL_CLEAR_OPTIONS: 1060 return (s->internal->options&=~larg); 1061 case SSL_CTRL_MODE: 1062 return (s->internal->mode|=larg); 1063 case SSL_CTRL_CLEAR_MODE: 1064 return (s->internal->mode &=~larg); 1065 case SSL_CTRL_GET_MAX_CERT_LIST: 1066 return (s->internal->max_cert_list); 1067 case SSL_CTRL_SET_MAX_CERT_LIST: 1068 l = s->internal->max_cert_list; 1069 s->internal->max_cert_list = larg; 1070 return (l); 1071 case SSL_CTRL_SET_MTU: 1072#ifndef OPENSSL_NO_DTLS1 1073 if (larg < (long)dtls1_min_mtu()) 1074 return (0); 1075#endif 1076 if (SSL_IS_DTLS(s)) { 1077 D1I(s)->mtu = larg; 1078 return (larg); 1079 } 1080 return (0); 1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1083 return (0); 1084 s->max_send_fragment = larg; 1085 return (1); 1086 case SSL_CTRL_GET_RI_SUPPORT: 1087 if (s->s3) 1088 return (S3I(s)->send_connection_binding); 1089 else return (0); 1090 default: 1091 if (SSL_IS_DTLS(s)) 1092 return dtls1_ctrl(s, cmd, larg, parg); 1093 return ssl3_ctrl(s, cmd, larg, parg); 1094 } 1095} 1096 1097long 1098SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1099{ 1100 switch (cmd) { 1101 case SSL_CTRL_SET_MSG_CALLBACK: 1102 s->internal->msg_callback = (void (*)(int write_p, int version, 1103 int content_type, const void *buf, size_t len, 1104 SSL *ssl, void *arg))(fp); 1105 return (1); 1106 1107 default: 1108 return (ssl3_callback_ctrl(s, cmd, fp)); 1109 } 1110} 1111 1112struct lhash_st_SSL_SESSION * 1113SSL_CTX_sessions(SSL_CTX *ctx) 1114{ 1115 return (ctx->internal->sessions); 1116} 1117 1118long 1119SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1120{ 1121 long l; 1122 1123 switch (cmd) { 1124 case SSL_CTRL_GET_READ_AHEAD: 1125 return (ctx->internal->read_ahead); 1126 case SSL_CTRL_SET_READ_AHEAD: 1127 l = ctx->internal->read_ahead; 1128 ctx->internal->read_ahead = larg; 1129 return (l); 1130 1131 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1132 ctx->internal->msg_callback_arg = parg; 1133 return (1); 1134 1135 case SSL_CTRL_GET_MAX_CERT_LIST: 1136 return (ctx->internal->max_cert_list); 1137 case SSL_CTRL_SET_MAX_CERT_LIST: 1138 l = ctx->internal->max_cert_list; 1139 ctx->internal->max_cert_list = larg; 1140 return (l); 1141 1142 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1143 l = ctx->internal->session_cache_size; 1144 ctx->internal->session_cache_size = larg; 1145 return (l); 1146 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1147 return (ctx->internal->session_cache_size); 1148 case SSL_CTRL_SET_SESS_CACHE_MODE: 1149 l = ctx->internal->session_cache_mode; 1150 ctx->internal->session_cache_mode = larg; 1151 return (l); 1152 case SSL_CTRL_GET_SESS_CACHE_MODE: 1153 return (ctx->internal->session_cache_mode); 1154 1155 case SSL_CTRL_SESS_NUMBER: 1156 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1157 case SSL_CTRL_SESS_CONNECT: 1158 return (ctx->internal->stats.sess_connect); 1159 case SSL_CTRL_SESS_CONNECT_GOOD: 1160 return (ctx->internal->stats.sess_connect_good); 1161 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1162 return (ctx->internal->stats.sess_connect_renegotiate); 1163 case SSL_CTRL_SESS_ACCEPT: 1164 return (ctx->internal->stats.sess_accept); 1165 case SSL_CTRL_SESS_ACCEPT_GOOD: 1166 return (ctx->internal->stats.sess_accept_good); 1167 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1168 return (ctx->internal->stats.sess_accept_renegotiate); 1169 case SSL_CTRL_SESS_HIT: 1170 return (ctx->internal->stats.sess_hit); 1171 case SSL_CTRL_SESS_CB_HIT: 1172 return (ctx->internal->stats.sess_cb_hit); 1173 case SSL_CTRL_SESS_MISSES: 1174 return (ctx->internal->stats.sess_miss); 1175 case SSL_CTRL_SESS_TIMEOUTS: 1176 return (ctx->internal->stats.sess_timeout); 1177 case SSL_CTRL_SESS_CACHE_FULL: 1178 return (ctx->internal->stats.sess_cache_full); 1179 case SSL_CTRL_OPTIONS: 1180 return (ctx->internal->options|=larg); 1181 case SSL_CTRL_CLEAR_OPTIONS: 1182 return (ctx->internal->options&=~larg); 1183 case SSL_CTRL_MODE: 1184 return (ctx->internal->mode|=larg); 1185 case SSL_CTRL_CLEAR_MODE: 1186 return (ctx->internal->mode&=~larg); 1187 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1188 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1189 return (0); 1190 ctx->internal->max_send_fragment = larg; 1191 return (1); 1192 default: 1193 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1194 } 1195} 1196 1197long 1198SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1199{ 1200 switch (cmd) { 1201 case SSL_CTRL_SET_MSG_CALLBACK: 1202 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1203 int content_type, const void *buf, size_t len, SSL *ssl, 1204 void *arg))(fp); 1205 return (1); 1206 1207 default: 1208 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1209 } 1210} 1211 1212int 1213ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1214{ 1215 long l; 1216 1217 l = a->id - b->id; 1218 if (l == 0L) 1219 return (0); 1220 else 1221 return ((l > 0) ? 1:-1); 1222} 1223 1224int 1225ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1226 const SSL_CIPHER * const *bp) 1227{ 1228 long l; 1229 1230 l = (*ap)->id - (*bp)->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235} 1236 1237/* 1238 * Return a STACK of the ciphers available for the SSL and in order of 1239 * preference. 1240 */ 1241STACK_OF(SSL_CIPHER) * 1242SSL_get_ciphers(const SSL *s) 1243{ 1244 if (s != NULL) { 1245 if (s->cipher_list != NULL) { 1246 return (s->cipher_list); 1247 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1248 return (s->ctx->cipher_list); 1249 } 1250 } 1251 return (NULL); 1252} 1253 1254/* 1255 * Return a STACK of the ciphers available for the SSL and in order of 1256 * algorithm id. 1257 */ 1258STACK_OF(SSL_CIPHER) * 1259ssl_get_ciphers_by_id(SSL *s) 1260{ 1261 if (s != NULL) { 1262 if (s->internal->cipher_list_by_id != NULL) { 1263 return (s->internal->cipher_list_by_id); 1264 } else if ((s->ctx != NULL) && 1265 (s->ctx->internal->cipher_list_by_id != NULL)) { 1266 return (s->ctx->internal->cipher_list_by_id); 1267 } 1268 } 1269 return (NULL); 1270} 1271 1272/* See if we have any ECC cipher suites. */ 1273int 1274ssl_has_ecc_ciphers(SSL *s) 1275{ 1276 STACK_OF(SSL_CIPHER) *ciphers; 1277 unsigned long alg_k, alg_a; 1278 SSL_CIPHER *cipher; 1279 int i; 1280 1281 if (s->version == DTLS1_VERSION) 1282 return 0; 1283 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1284 return 0; 1285 1286 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1287 cipher = sk_SSL_CIPHER_value(ciphers, i); 1288 1289 alg_k = cipher->algorithm_mkey; 1290 alg_a = cipher->algorithm_auth; 1291 1292 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1293 return 1; 1294 } 1295 1296 return 0; 1297} 1298 1299/* The old interface to get the same thing as SSL_get_ciphers(). */ 1300const char * 1301SSL_get_cipher_list(const SSL *s, int n) 1302{ 1303 SSL_CIPHER *c; 1304 STACK_OF(SSL_CIPHER) *sk; 1305 1306 if (s == NULL) 1307 return (NULL); 1308 sk = SSL_get_ciphers(s); 1309 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1310 return (NULL); 1311 c = sk_SSL_CIPHER_value(sk, n); 1312 if (c == NULL) 1313 return (NULL); 1314 return (c->name); 1315} 1316 1317STACK_OF(SSL_CIPHER) * 1318SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1319{ 1320 return ctx->cipher_list; 1321} 1322 1323/* Specify the ciphers to be used by default by the SSL_CTX. */ 1324int 1325SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1326{ 1327 STACK_OF(SSL_CIPHER) *sk; 1328 1329 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1330 &ctx->internal->cipher_list_by_id, str); 1331 /* 1332 * ssl_create_cipher_list may return an empty stack if it 1333 * was unable to find a cipher matching the given rule string 1334 * (for example if the rule string specifies a cipher which 1335 * has been disabled). This is not an error as far as 1336 * ssl_create_cipher_list is concerned, and hence 1337 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1338 * updated. 1339 */ 1340 if (sk == NULL) 1341 return (0); 1342 else if (sk_SSL_CIPHER_num(sk) == 0) { 1343 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1344 return (0); 1345 } 1346 return (1); 1347} 1348 1349/* Specify the ciphers to be used by the SSL. */ 1350int 1351SSL_set_cipher_list(SSL *s, const char *str) 1352{ 1353 STACK_OF(SSL_CIPHER) *sk; 1354 1355 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1356 &s->internal->cipher_list_by_id, str); 1357 /* see comment in SSL_CTX_set_cipher_list */ 1358 if (sk == NULL) 1359 return (0); 1360 else if (sk_SSL_CIPHER_num(sk) == 0) { 1361 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1362 return (0); 1363 } 1364 return (1); 1365} 1366 1367/* works well for SSLv2, not so good for SSLv3 */ 1368char * 1369SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1370{ 1371 char *end; 1372 STACK_OF(SSL_CIPHER) *sk; 1373 SSL_CIPHER *c; 1374 size_t curlen = 0; 1375 int i; 1376 1377 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1378 return (NULL); 1379 1380 sk = s->session->ciphers; 1381 if (sk_SSL_CIPHER_num(sk) == 0) 1382 return (NULL); 1383 1384 buf[0] = '\0'; 1385 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1386 c = sk_SSL_CIPHER_value(sk, i); 1387 end = buf + curlen; 1388 if (strlcat(buf, c->name, len) >= len || 1389 (curlen = strlcat(buf, ":", len)) >= len) { 1390 /* remove truncated cipher from list */ 1391 *end = '\0'; 1392 break; 1393 } 1394 } 1395 /* remove trailing colon */ 1396 if ((end = strrchr(buf, ':')) != NULL) 1397 *end = '\0'; 1398 return (buf); 1399} 1400 1401int 1402ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1403{ 1404 SSL_CIPHER *cipher; 1405 int num_ciphers = 0; 1406 int i; 1407 1408 if (ciphers == NULL) 1409 return 0; 1410 1411 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1412 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1413 return 0; 1414 1415 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1416 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1417 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1418 continue; 1419 1420 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1421 return 0; 1422 1423 num_ciphers++; 1424 } 1425 1426 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1427 if (num_ciphers > 0 && !s->internal->renegotiate) { 1428 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1429 return 0; 1430 } 1431 1432 if (!CBB_flush(cbb)) 1433 return 0; 1434 1435 return 1; 1436} 1437 1438STACK_OF(SSL_CIPHER) * 1439ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1440{ 1441 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1442 const SSL_CIPHER *cipher; 1443 uint16_t cipher_value, max_version; 1444 unsigned long cipher_id; 1445 1446 if (s->s3 != NULL) 1447 S3I(s)->send_connection_binding = 0; 1448 1449 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1450 SSLerror(s, ERR_R_MALLOC_FAILURE); 1451 goto err; 1452 } 1453 1454 while (CBS_len(cbs) > 0) { 1455 if (!CBS_get_u16(cbs, &cipher_value)) { 1456 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1457 goto err; 1458 } 1459 1460 cipher_id = SSL3_CK_ID | cipher_value; 1461 1462 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1463 /* 1464 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1465 * renegotiating. 1466 */ 1467 if (s->internal->renegotiate) { 1468 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1469 ssl3_send_alert(s, SSL3_AL_FATAL, 1470 SSL_AD_HANDSHAKE_FAILURE); 1471 1472 goto err; 1473 } 1474 S3I(s)->send_connection_binding = 1; 1475 continue; 1476 } 1477 1478 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1479 /* 1480 * TLS_FALLBACK_SCSV indicates that the client 1481 * previously tried a higher protocol version. 1482 * Fail if the current version is an unexpected 1483 * downgrade. 1484 */ 1485 max_version = ssl_max_server_version(s); 1486 if (max_version == 0 || s->version < max_version) { 1487 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1488 if (s->s3 != NULL) 1489 ssl3_send_alert(s, SSL3_AL_FATAL, 1490 SSL_AD_INAPPROPRIATE_FALLBACK); 1491 goto err; 1492 } 1493 continue; 1494 } 1495 1496 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1497 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1498 SSLerror(s, ERR_R_MALLOC_FAILURE); 1499 goto err; 1500 } 1501 } 1502 } 1503 1504 return (ciphers); 1505 1506err: 1507 sk_SSL_CIPHER_free(ciphers); 1508 1509 return (NULL); 1510} 1511 1512 1513/* 1514 * Return a servername extension value if provided in Client Hello, or NULL. 1515 * So far, only host_name types are defined (RFC 3546). 1516 */ 1517const char * 1518SSL_get_servername(const SSL *s, const int type) 1519{ 1520 if (type != TLSEXT_NAMETYPE_host_name) 1521 return (NULL); 1522 1523 return (s->session && !s->tlsext_hostname ? 1524 s->session->tlsext_hostname : 1525 s->tlsext_hostname); 1526} 1527 1528int 1529SSL_get_servername_type(const SSL *s) 1530{ 1531 if (s->session && 1532 (!s->tlsext_hostname ? 1533 s->session->tlsext_hostname : s->tlsext_hostname)) 1534 return (TLSEXT_NAMETYPE_host_name); 1535 return (-1); 1536} 1537 1538/* 1539 * SSL_select_next_proto implements standard protocol selection. It is 1540 * expected that this function is called from the callback set by 1541 * SSL_CTX_set_alpn_select_cb. 1542 * 1543 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1544 * strings. The length byte itself is not included in the length. A byte 1545 * string of length 0 is invalid. No byte string may be truncated. 1546 * 1547 * It returns either: 1548 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1549 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1550 */ 1551int 1552SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1553 const unsigned char *server, unsigned int server_len, 1554 const unsigned char *client, unsigned int client_len) 1555{ 1556 unsigned int i, j; 1557 const unsigned char *result; 1558 int status = OPENSSL_NPN_UNSUPPORTED; 1559 1560 /* 1561 * For each protocol in server preference order, 1562 * see if we support it. 1563 */ 1564 for (i = 0; i < server_len; ) { 1565 for (j = 0; j < client_len; ) { 1566 if (server[i] == client[j] && 1567 memcmp(&server[i + 1], 1568 &client[j + 1], server[i]) == 0) { 1569 /* We found a match */ 1570 result = &server[i]; 1571 status = OPENSSL_NPN_NEGOTIATED; 1572 goto found; 1573 } 1574 j += client[j]; 1575 j++; 1576 } 1577 i += server[i]; 1578 i++; 1579 } 1580 1581 /* There's no overlap between our protocols and the server's list. */ 1582 result = client; 1583 status = OPENSSL_NPN_NO_OVERLAP; 1584 1585found: 1586 *out = (unsigned char *) result + 1; 1587 *outlen = result[0]; 1588 return (status); 1589} 1590 1591/* SSL_get0_next_proto_negotiated is deprecated. */ 1592void 1593SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1594 unsigned *len) 1595{ 1596 *data = NULL; 1597 *len = 0; 1598} 1599 1600/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1601void 1602SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1603 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1604{ 1605} 1606 1607/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1608void 1609SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1610 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1611 unsigned int inlen, void *arg), void *arg) 1612{ 1613} 1614 1615/* 1616 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1617 * protocols, which must be in wire-format (i.e. a series of non-empty, 1618 * 8-bit length-prefixed strings). Returns 0 on success. 1619 */ 1620int 1621SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1622 unsigned int protos_len) 1623{ 1624 int failed = 1; 1625 1626 if (protos == NULL || protos_len == 0) 1627 goto err; 1628 1629 free(ctx->internal->alpn_client_proto_list); 1630 ctx->internal->alpn_client_proto_list = NULL; 1631 ctx->internal->alpn_client_proto_list_len = 0; 1632 1633 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1634 == NULL) 1635 goto err; 1636 ctx->internal->alpn_client_proto_list_len = protos_len; 1637 1638 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1639 1640 failed = 0; 1641 1642 err: 1643 /* NOTE: Return values are the reverse of what you expect. */ 1644 return (failed); 1645} 1646 1647/* 1648 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1649 * protocols, which must be in wire-format (i.e. a series of non-empty, 1650 * 8-bit length-prefixed strings). Returns 0 on success. 1651 */ 1652int 1653SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1654 unsigned int protos_len) 1655{ 1656 int failed = 1; 1657 1658 if (protos == NULL || protos_len == 0) 1659 goto err; 1660 1661 free(ssl->internal->alpn_client_proto_list); 1662 ssl->internal->alpn_client_proto_list = NULL; 1663 ssl->internal->alpn_client_proto_list_len = 0; 1664 1665 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1666 == NULL) 1667 goto err; 1668 ssl->internal->alpn_client_proto_list_len = protos_len; 1669 1670 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1671 1672 failed = 0; 1673 1674 err: 1675 /* NOTE: Return values are the reverse of what you expect. */ 1676 return (failed); 1677} 1678 1679/* 1680 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1681 * ClientHello processing in order to select an ALPN protocol from the 1682 * client's list of offered protocols. 1683 */ 1684void 1685SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1686 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1687 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1688{ 1689 ctx->internal->alpn_select_cb = cb; 1690 ctx->internal->alpn_select_cb_arg = arg; 1691} 1692 1693/* 1694 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1695 * it sets data to point to len bytes of protocol name (not including the 1696 * leading length-prefix byte). If the server didn't respond with* a negotiated 1697 * protocol then len will be zero. 1698 */ 1699void 1700SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1701 unsigned *len) 1702{ 1703 *data = NULL; 1704 *len = 0; 1705 1706 if (ssl->s3 != NULL) { 1707 *data = ssl->s3->internal->alpn_selected; 1708 *len = ssl->s3->internal->alpn_selected_len; 1709 } 1710} 1711 1712int 1713SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1714 const char *label, size_t llen, const unsigned char *p, size_t plen, 1715 int use_context) 1716{ 1717 return (tls1_export_keying_material(s, out, olen, 1718 label, llen, p, plen, use_context)); 1719} 1720 1721static unsigned long 1722ssl_session_hash(const SSL_SESSION *a) 1723{ 1724 unsigned long l; 1725 1726 l = (unsigned long) 1727 ((unsigned int) a->session_id[0] )| 1728 ((unsigned int) a->session_id[1]<< 8L)| 1729 ((unsigned long)a->session_id[2]<<16L)| 1730 ((unsigned long)a->session_id[3]<<24L); 1731 return (l); 1732} 1733 1734/* 1735 * NB: If this function (or indeed the hash function which uses a sort of 1736 * coarser function than this one) is changed, ensure 1737 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1738 * able to construct an SSL_SESSION that will collide with any existing session 1739 * with a matching session ID. 1740 */ 1741static int 1742ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1743{ 1744 if (a->ssl_version != b->ssl_version) 1745 return (1); 1746 if (a->session_id_length != b->session_id_length) 1747 return (1); 1748 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1749 return (1); 1750 return (0); 1751} 1752 1753/* 1754 * These wrapper functions should remain rather than redeclaring 1755 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1756 * variable. The reason is that the functions aren't static, they're exposed via 1757 * ssl.h. 1758 */ 1759static unsigned long 1760ssl_session_LHASH_HASH(const void *arg) 1761{ 1762 const SSL_SESSION *a = arg; 1763 1764 return ssl_session_hash(a); 1765} 1766 1767static int 1768ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1769{ 1770 const SSL_SESSION *a = arg1; 1771 const SSL_SESSION *b = arg2; 1772 1773 return ssl_session_cmp(a, b); 1774} 1775 1776SSL_CTX * 1777SSL_CTX_new(const SSL_METHOD *meth) 1778{ 1779 SSL_CTX *ret; 1780 1781 if (meth == NULL) { 1782 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1783 return (NULL); 1784 } 1785 1786 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1787 SSLerrorx(ERR_R_MALLOC_FAILURE); 1788 return (NULL); 1789 } 1790 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1791 free(ret); 1792 SSLerrorx(ERR_R_MALLOC_FAILURE); 1793 return (NULL); 1794 } 1795 1796 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1797 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1798 goto err; 1799 } 1800 1801 ret->method = meth; 1802 ret->internal->min_version = meth->internal->min_version; 1803 ret->internal->max_version = meth->internal->max_version; 1804 1805 ret->cert_store = NULL; 1806 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1807 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1808 ret->internal->session_cache_head = NULL; 1809 ret->internal->session_cache_tail = NULL; 1810 1811 /* We take the system default */ 1812 ret->session_timeout = meth->internal->get_timeout(); 1813 1814 ret->internal->new_session_cb = 0; 1815 ret->internal->remove_session_cb = 0; 1816 ret->internal->get_session_cb = 0; 1817 ret->internal->generate_session_id = 0; 1818 1819 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1820 1821 ret->references = 1; 1822 ret->internal->quiet_shutdown = 0; 1823 1824 ret->internal->info_callback = NULL; 1825 1826 ret->internal->app_verify_callback = 0; 1827 ret->internal->app_verify_arg = NULL; 1828 1829 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1830 ret->internal->read_ahead = 0; 1831 ret->internal->msg_callback = 0; 1832 ret->internal->msg_callback_arg = NULL; 1833 ret->verify_mode = SSL_VERIFY_NONE; 1834 ret->sid_ctx_length = 0; 1835 ret->internal->default_verify_callback = NULL; 1836 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1837 goto err; 1838 1839 ret->default_passwd_callback = 0; 1840 ret->default_passwd_callback_userdata = NULL; 1841 ret->internal->client_cert_cb = 0; 1842 ret->internal->app_gen_cookie_cb = 0; 1843 ret->internal->app_verify_cookie_cb = 0; 1844 1845 ret->internal->sessions = lh_SSL_SESSION_new(); 1846 if (ret->internal->sessions == NULL) 1847 goto err; 1848 ret->cert_store = X509_STORE_new(); 1849 if (ret->cert_store == NULL) 1850 goto err; 1851 1852 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1853 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1854 if (ret->cipher_list == NULL || 1855 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1856 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1857 goto err2; 1858 } 1859 1860 ret->param = X509_VERIFY_PARAM_new(); 1861 if (!ret->param) 1862 goto err; 1863 1864 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1865 goto err; 1866 1867 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1868 1869 ret->extra_certs = NULL; 1870 1871 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1872 1873 ret->internal->tlsext_servername_callback = 0; 1874 ret->internal->tlsext_servername_arg = NULL; 1875 1876 /* Setup RFC4507 ticket keys */ 1877 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1878 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1879 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1880 1881 ret->internal->tlsext_status_cb = 0; 1882 ret->internal->tlsext_status_arg = NULL; 1883 1884#ifndef OPENSSL_NO_ENGINE 1885 ret->internal->client_cert_engine = NULL; 1886#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1887#define eng_strx(x) #x 1888#define eng_str(x) eng_strx(x) 1889 /* Use specific client engine automatically... ignore errors */ 1890 { 1891 ENGINE *eng; 1892 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1893 if (!eng) { 1894 ERR_clear_error(); 1895 ENGINE_load_builtin_engines(); 1896 eng = ENGINE_by_id(eng_str( 1897 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1898 } 1899 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1900 ERR_clear_error(); 1901 } 1902#endif 1903#endif 1904 /* 1905 * Default is to connect to non-RI servers. When RI is more widely 1906 * deployed might change this. 1907 */ 1908 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1909 1910 return (ret); 1911err: 1912 SSLerrorx(ERR_R_MALLOC_FAILURE); 1913err2: 1914 SSL_CTX_free(ret); 1915 return (NULL); 1916} 1917 1918void 1919SSL_CTX_free(SSL_CTX *ctx) 1920{ 1921 int i; 1922 1923 if (ctx == NULL) 1924 return; 1925 1926 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1927 if (i > 0) 1928 return; 1929 1930 X509_VERIFY_PARAM_free(ctx->param); 1931 1932 /* 1933 * Free internal session cache. However: the remove_cb() may reference 1934 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1935 * after the sessions were flushed. 1936 * As the ex_data handling routines might also touch the session cache, 1937 * the most secure solution seems to be: empty (flush) the cache, then 1938 * free ex_data, then finally free the cache. 1939 * (See ticket [openssl.org #212].) 1940 */ 1941 if (ctx->internal->sessions != NULL) 1942 SSL_CTX_flush_sessions(ctx, 0); 1943 1944 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1945 1946 lh_SSL_SESSION_free(ctx->internal->sessions); 1947 1948 X509_STORE_free(ctx->cert_store); 1949 sk_SSL_CIPHER_free(ctx->cipher_list); 1950 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1951 ssl_cert_free(ctx->internal->cert); 1952 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1953 sk_X509_pop_free(ctx->extra_certs, X509_free); 1954 1955#ifndef OPENSSL_NO_SRTP 1956 if (ctx->internal->srtp_profiles) 1957 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1958#endif 1959 1960#ifndef OPENSSL_NO_ENGINE 1961 if (ctx->internal->client_cert_engine) 1962 ENGINE_finish(ctx->internal->client_cert_engine); 1963#endif 1964 1965 free(ctx->internal->tlsext_ecpointformatlist); 1966 free(ctx->internal->tlsext_supportedgroups); 1967 1968 free(ctx->internal->alpn_client_proto_list); 1969 1970 free(ctx->internal); 1971 free(ctx); 1972} 1973 1974int 1975SSL_CTX_up_ref(SSL_CTX *ctx) 1976{ 1977 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1978 return ((refs > 1) ? 1 : 0); 1979} 1980 1981void 1982SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1983{ 1984 ctx->default_passwd_callback = cb; 1985} 1986 1987void 1988SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1989{ 1990 ctx->default_passwd_callback_userdata = u; 1991} 1992 1993void 1994SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1995 void *), void *arg) 1996{ 1997 ctx->internal->app_verify_callback = cb; 1998 ctx->internal->app_verify_arg = arg; 1999} 2000 2001void 2002SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2003{ 2004 ctx->verify_mode = mode; 2005 ctx->internal->default_verify_callback = cb; 2006} 2007 2008void 2009SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2010{ 2011 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2012} 2013 2014void 2015ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2016{ 2017 int rsa_enc, rsa_sign, dh_tmp; 2018 int have_ecc_cert; 2019 unsigned long mask_k, mask_a; 2020 X509 *x = NULL; 2021 CERT_PKEY *cpk; 2022 2023 if (c == NULL) 2024 return; 2025 2026 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2027 c->dh_tmp_auto != 0); 2028 2029 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2030 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2031 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2032 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2033 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2034 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2035 2036 mask_k = 0; 2037 mask_a = 0; 2038 2039 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2040 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2041 mask_k |= SSL_kGOST; 2042 mask_a |= SSL_aGOST01; 2043 } 2044 2045 if (rsa_enc) 2046 mask_k |= SSL_kRSA; 2047 2048 if (dh_tmp) 2049 mask_k |= SSL_kDHE; 2050 2051 if (rsa_enc || rsa_sign) 2052 mask_a |= SSL_aRSA; 2053 2054 mask_a |= SSL_aNULL; 2055 2056 /* 2057 * An ECC certificate may be usable for ECDH and/or 2058 * ECDSA cipher suites depending on the key usage extension. 2059 */ 2060 if (have_ecc_cert) { 2061 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2062 2063 /* This call populates extension flags (ex_flags). */ 2064 X509_check_purpose(x, -1, 0); 2065 2066 /* Key usage, if present, must allow signing. */ 2067 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2068 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2069 mask_a |= SSL_aECDSA; 2070 } 2071 2072 mask_k |= SSL_kECDHE; 2073 2074 c->mask_k = mask_k; 2075 c->mask_a = mask_a; 2076 c->valid = 1; 2077} 2078 2079/* See if this handshake is using an ECC cipher suite. */ 2080int 2081ssl_using_ecc_cipher(SSL *s) 2082{ 2083 unsigned long alg_a, alg_k; 2084 2085 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2086 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2087 2088 return SSI(s)->tlsext_ecpointformatlist != NULL && 2089 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2090 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2091} 2092 2093int 2094ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2095{ 2096 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2097 unsigned long alg_a; 2098 2099 alg_a = cs->algorithm_auth; 2100 2101 if (alg_a & SSL_aECDSA) { 2102 /* This call populates extension flags (ex_flags). */ 2103 X509_check_purpose(x, -1, 0); 2104 2105 /* Key usage, if present, must allow signing. */ 2106 if ((x->ex_flags & EXFLAG_KUSAGE) && 2107 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2108 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2109 return (0); 2110 } 2111 } 2112 2113 return (1); 2114} 2115 2116CERT_PKEY * 2117ssl_get_server_send_pkey(const SSL *s) 2118{ 2119 unsigned long alg_a; 2120 CERT *c; 2121 int i; 2122 2123 c = s->cert; 2124 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2125 2126 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2127 2128 if (alg_a & SSL_aECDSA) { 2129 i = SSL_PKEY_ECC; 2130 } else if (alg_a & SSL_aRSA) { 2131 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2132 i = SSL_PKEY_RSA_SIGN; 2133 else 2134 i = SSL_PKEY_RSA_ENC; 2135 } else if (alg_a & SSL_aGOST01) { 2136 i = SSL_PKEY_GOST01; 2137 } else { /* if (alg_a & SSL_aNULL) */ 2138 SSLerror(s, ERR_R_INTERNAL_ERROR); 2139 return (NULL); 2140 } 2141 2142 return (c->pkeys + i); 2143} 2144 2145X509 * 2146ssl_get_server_send_cert(const SSL *s) 2147{ 2148 CERT_PKEY *cpk; 2149 2150 cpk = ssl_get_server_send_pkey(s); 2151 if (!cpk) 2152 return (NULL); 2153 return (cpk->x509); 2154} 2155 2156EVP_PKEY * 2157ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2158{ 2159 unsigned long alg_a; 2160 CERT *c; 2161 int idx = -1; 2162 2163 alg_a = cipher->algorithm_auth; 2164 c = s->cert; 2165 2166 if (alg_a & SSL_aRSA) { 2167 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2168 idx = SSL_PKEY_RSA_SIGN; 2169 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2170 idx = SSL_PKEY_RSA_ENC; 2171 } else if ((alg_a & SSL_aECDSA) && 2172 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2173 idx = SSL_PKEY_ECC; 2174 if (idx == -1) { 2175 SSLerror(s, ERR_R_INTERNAL_ERROR); 2176 return (NULL); 2177 } 2178 if (pmd) 2179 *pmd = c->pkeys[idx].digest; 2180 return (c->pkeys[idx].privatekey); 2181} 2182 2183DH * 2184ssl_get_auto_dh(SSL *s) 2185{ 2186 CERT_PKEY *cpk; 2187 int keylen; 2188 DH *dhp; 2189 2190 if (s->cert->dh_tmp_auto == 2) { 2191 keylen = 1024; 2192 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2193 keylen = 1024; 2194 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2195 keylen = 3072; 2196 } else { 2197 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2198 return (NULL); 2199 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2200 return (NULL); 2201 keylen = EVP_PKEY_bits(cpk->privatekey); 2202 } 2203 2204 if ((dhp = DH_new()) == NULL) 2205 return (NULL); 2206 2207 dhp->g = BN_new(); 2208 if (dhp->g != NULL) 2209 BN_set_word(dhp->g, 2); 2210 2211 if (keylen >= 8192) 2212 dhp->p = get_rfc3526_prime_8192(NULL); 2213 else if (keylen >= 4096) 2214 dhp->p = get_rfc3526_prime_4096(NULL); 2215 else if (keylen >= 3072) 2216 dhp->p = get_rfc3526_prime_3072(NULL); 2217 else if (keylen >= 2048) 2218 dhp->p = get_rfc3526_prime_2048(NULL); 2219 else if (keylen >= 1536) 2220 dhp->p = get_rfc3526_prime_1536(NULL); 2221 else 2222 dhp->p = get_rfc2409_prime_1024(NULL); 2223 2224 if (dhp->p == NULL || dhp->g == NULL) { 2225 DH_free(dhp); 2226 return (NULL); 2227 } 2228 return (dhp); 2229} 2230 2231void 2232ssl_update_cache(SSL *s, int mode) 2233{ 2234 int i; 2235 2236 /* 2237 * If the session_id_length is 0, we are not supposed to cache it, 2238 * and it would be rather hard to do anyway :-) 2239 */ 2240 if (s->session->session_id_length == 0) 2241 return; 2242 2243 i = s->session_ctx->internal->session_cache_mode; 2244 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2245 || SSL_CTX_add_session(s->session_ctx, s->session)) 2246 && (s->session_ctx->internal->new_session_cb != NULL)) { 2247 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2248 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2249 SSL_SESSION_free(s->session); 2250 } 2251 2252 /* auto flush every 255 connections */ 2253 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2254 ((i & mode) == mode)) { 2255 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2256 s->session_ctx->internal->stats.sess_connect_good : 2257 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2258 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2259 } 2260 } 2261} 2262 2263const SSL_METHOD * 2264SSL_get_ssl_method(SSL *s) 2265{ 2266 return (s->method); 2267} 2268 2269int 2270SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2271{ 2272 int conn = -1; 2273 int ret = 1; 2274 2275 if (s->method != meth) { 2276 if (s->internal->handshake_func != NULL) 2277 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2278 2279 if (s->method->internal->version == meth->internal->version) 2280 s->method = meth; 2281 else { 2282 s->method->internal->ssl_free(s); 2283 s->method = meth; 2284 ret = s->method->internal->ssl_new(s); 2285 } 2286 2287 if (conn == 1) 2288 s->internal->handshake_func = meth->internal->ssl_connect; 2289 else if (conn == 0) 2290 s->internal->handshake_func = meth->internal->ssl_accept; 2291 } 2292 return (ret); 2293} 2294 2295int 2296SSL_get_error(const SSL *s, int i) 2297{ 2298 int reason; 2299 unsigned long l; 2300 BIO *bio; 2301 2302 if (i > 0) 2303 return (SSL_ERROR_NONE); 2304 2305 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2306 * etc, where we do encode the error */ 2307 if ((l = ERR_peek_error()) != 0) { 2308 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2309 return (SSL_ERROR_SYSCALL); 2310 else 2311 return (SSL_ERROR_SSL); 2312 } 2313 2314 if ((i < 0) && SSL_want_read(s)) { 2315 bio = SSL_get_rbio(s); 2316 if (BIO_should_read(bio)) { 2317 return (SSL_ERROR_WANT_READ); 2318 } else if (BIO_should_write(bio)) { 2319 /* 2320 * This one doesn't make too much sense... We never 2321 * try to write to the rbio, and an application 2322 * program where rbio and wbio are separate couldn't 2323 * even know what it should wait for. However if we 2324 * ever set s->internal->rwstate incorrectly (so that we have 2325 * SSL_want_read(s) instead of SSL_want_write(s)) 2326 * and rbio and wbio *are* the same, this test works 2327 * around that bug; so it might be safer to keep it. 2328 */ 2329 return (SSL_ERROR_WANT_WRITE); 2330 } else if (BIO_should_io_special(bio)) { 2331 reason = BIO_get_retry_reason(bio); 2332 if (reason == BIO_RR_CONNECT) 2333 return (SSL_ERROR_WANT_CONNECT); 2334 else if (reason == BIO_RR_ACCEPT) 2335 return (SSL_ERROR_WANT_ACCEPT); 2336 else 2337 return (SSL_ERROR_SYSCALL); /* unknown */ 2338 } 2339 } 2340 2341 if ((i < 0) && SSL_want_write(s)) { 2342 bio = SSL_get_wbio(s); 2343 if (BIO_should_write(bio)) { 2344 return (SSL_ERROR_WANT_WRITE); 2345 } else if (BIO_should_read(bio)) { 2346 /* 2347 * See above (SSL_want_read(s) with 2348 * BIO_should_write(bio)) 2349 */ 2350 return (SSL_ERROR_WANT_READ); 2351 } else if (BIO_should_io_special(bio)) { 2352 reason = BIO_get_retry_reason(bio); 2353 if (reason == BIO_RR_CONNECT) 2354 return (SSL_ERROR_WANT_CONNECT); 2355 else if (reason == BIO_RR_ACCEPT) 2356 return (SSL_ERROR_WANT_ACCEPT); 2357 else 2358 return (SSL_ERROR_SYSCALL); 2359 } 2360 } 2361 if ((i < 0) && SSL_want_x509_lookup(s)) { 2362 return (SSL_ERROR_WANT_X509_LOOKUP); 2363 } 2364 2365 if (i == 0) { 2366 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2367 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2368 return (SSL_ERROR_ZERO_RETURN); 2369 } 2370 return (SSL_ERROR_SYSCALL); 2371} 2372 2373int 2374SSL_do_handshake(SSL *s) 2375{ 2376 int ret = 1; 2377 2378 if (s->internal->handshake_func == NULL) { 2379 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2380 return (-1); 2381 } 2382 2383 s->method->internal->ssl_renegotiate_check(s); 2384 2385 if (SSL_in_init(s) || SSL_in_before(s)) { 2386 ret = s->internal->handshake_func(s); 2387 } 2388 return (ret); 2389} 2390 2391/* 2392 * For the next 2 functions, SSL_clear() sets shutdown and so 2393 * one of these calls will reset it 2394 */ 2395void 2396SSL_set_accept_state(SSL *s) 2397{ 2398 s->server = 1; 2399 s->internal->shutdown = 0; 2400 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2401 s->internal->handshake_func = s->method->internal->ssl_accept; 2402 /* clear the current cipher */ 2403 ssl_clear_cipher_ctx(s); 2404 ssl_clear_hash_ctx(&s->read_hash); 2405 ssl_clear_hash_ctx(&s->internal->write_hash); 2406} 2407 2408void 2409SSL_set_connect_state(SSL *s) 2410{ 2411 s->server = 0; 2412 s->internal->shutdown = 0; 2413 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2414 s->internal->handshake_func = s->method->internal->ssl_connect; 2415 /* clear the current cipher */ 2416 ssl_clear_cipher_ctx(s); 2417 ssl_clear_hash_ctx(&s->read_hash); 2418 ssl_clear_hash_ctx(&s->internal->write_hash); 2419} 2420 2421int 2422ssl_undefined_function(SSL *s) 2423{ 2424 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2425 return (0); 2426} 2427 2428int 2429ssl_undefined_void_function(void) 2430{ 2431 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2432 return (0); 2433} 2434 2435int 2436ssl_undefined_const_function(const SSL *s) 2437{ 2438 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2439 return (0); 2440} 2441 2442const char * 2443ssl_version_string(int ver) 2444{ 2445 switch (ver) { 2446 case DTLS1_VERSION: 2447 return (SSL_TXT_DTLS1); 2448 case TLS1_VERSION: 2449 return (SSL_TXT_TLSV1); 2450 case TLS1_1_VERSION: 2451 return (SSL_TXT_TLSV1_1); 2452 case TLS1_2_VERSION: 2453 return (SSL_TXT_TLSV1_2); 2454 default: 2455 return ("unknown"); 2456 } 2457} 2458 2459const char * 2460SSL_get_version(const SSL *s) 2461{ 2462 return ssl_version_string(s->version); 2463} 2464 2465SSL * 2466SSL_dup(SSL *s) 2467{ 2468 STACK_OF(X509_NAME) *sk; 2469 X509_NAME *xn; 2470 SSL *ret; 2471 int i; 2472 2473 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2474 return (NULL); 2475 2476 ret->version = s->version; 2477 ret->internal->type = s->internal->type; 2478 ret->method = s->method; 2479 2480 if (s->session != NULL) { 2481 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2482 SSL_copy_session_id(ret, s); 2483 } else { 2484 /* 2485 * No session has been established yet, so we have to expect 2486 * that s->cert or ret->cert will be changed later -- 2487 * they should not both point to the same object, 2488 * and thus we can't use SSL_copy_session_id. 2489 */ 2490 2491 ret->method->internal->ssl_free(ret); 2492 ret->method = s->method; 2493 ret->method->internal->ssl_new(ret); 2494 2495 if (s->cert != NULL) { 2496 ssl_cert_free(ret->cert); 2497 ret->cert = ssl_cert_dup(s->cert); 2498 if (ret->cert == NULL) 2499 goto err; 2500 } 2501 2502 SSL_set_session_id_context(ret, 2503 s->sid_ctx, s->sid_ctx_length); 2504 } 2505 2506 ret->internal->options = s->internal->options; 2507 ret->internal->mode = s->internal->mode; 2508 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2509 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2510 ret->internal->msg_callback = s->internal->msg_callback; 2511 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2512 SSL_set_verify(ret, SSL_get_verify_mode(s), 2513 SSL_get_verify_callback(s)); 2514 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2515 ret->internal->generate_session_id = s->internal->generate_session_id; 2516 2517 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2518 2519 ret->internal->debug = s->internal->debug; 2520 2521 /* copy app data, a little dangerous perhaps */ 2522 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2523 &ret->internal->ex_data, &s->internal->ex_data)) 2524 goto err; 2525 2526 /* setup rbio, and wbio */ 2527 if (s->rbio != NULL) { 2528 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2529 goto err; 2530 } 2531 if (s->wbio != NULL) { 2532 if (s->wbio != s->rbio) { 2533 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2534 goto err; 2535 } else 2536 ret->wbio = ret->rbio; 2537 } 2538 ret->internal->rwstate = s->internal->rwstate; 2539 ret->internal->in_handshake = s->internal->in_handshake; 2540 ret->internal->handshake_func = s->internal->handshake_func; 2541 ret->server = s->server; 2542 ret->internal->renegotiate = s->internal->renegotiate; 2543 ret->internal->new_session = s->internal->new_session; 2544 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2545 ret->internal->shutdown = s->internal->shutdown; 2546 /* SSL_dup does not really work at any state, though */ 2547 S3I(ret)->hs.state = S3I(s)->hs.state; 2548 ret->internal->rstate = s->internal->rstate; 2549 2550 /* 2551 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2552 * ret->init_off 2553 */ 2554 ret->internal->init_num = 0; 2555 2556 ret->internal->hit = s->internal->hit; 2557 2558 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2559 2560 /* dup the cipher_list and cipher_list_by_id stacks */ 2561 if (s->cipher_list != NULL) { 2562 if ((ret->cipher_list = 2563 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2564 goto err; 2565 } 2566 if (s->internal->cipher_list_by_id != NULL) { 2567 if ((ret->internal->cipher_list_by_id = 2568 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2569 goto err; 2570 } 2571 2572 /* Dup the client_CA list */ 2573 if (s->internal->client_CA != NULL) { 2574 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2575 ret->internal->client_CA = sk; 2576 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2577 xn = sk_X509_NAME_value(sk, i); 2578 if (sk_X509_NAME_set(sk, i, 2579 X509_NAME_dup(xn)) == NULL) { 2580 X509_NAME_free(xn); 2581 goto err; 2582 } 2583 } 2584 } 2585 2586 if (0) { 2587err: 2588 if (ret != NULL) 2589 SSL_free(ret); 2590 ret = NULL; 2591 } 2592 return (ret); 2593} 2594 2595void 2596ssl_clear_cipher_ctx(SSL *s) 2597{ 2598 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2599 s->enc_read_ctx = NULL; 2600 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2601 s->internal->enc_write_ctx = NULL; 2602 2603 if (s->internal->aead_read_ctx != NULL) { 2604 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2605 free(s->internal->aead_read_ctx); 2606 s->internal->aead_read_ctx = NULL; 2607 } 2608 if (s->internal->aead_write_ctx != NULL) { 2609 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2610 free(s->internal->aead_write_ctx); 2611 s->internal->aead_write_ctx = NULL; 2612 } 2613 2614} 2615 2616/* Fix this function so that it takes an optional type parameter */ 2617X509 * 2618SSL_get_certificate(const SSL *s) 2619{ 2620 if (s->cert != NULL) 2621 return (s->cert->key->x509); 2622 else 2623 return (NULL); 2624} 2625 2626/* Fix this function so that it takes an optional type parameter */ 2627EVP_PKEY * 2628SSL_get_privatekey(SSL *s) 2629{ 2630 if (s->cert != NULL) 2631 return (s->cert->key->privatekey); 2632 else 2633 return (NULL); 2634} 2635 2636const SSL_CIPHER * 2637SSL_get_current_cipher(const SSL *s) 2638{ 2639 if ((s->session != NULL) && (s->session->cipher != NULL)) 2640 return (s->session->cipher); 2641 return (NULL); 2642} 2643const void * 2644SSL_get_current_compression(SSL *s) 2645{ 2646 return (NULL); 2647} 2648 2649const void * 2650SSL_get_current_expansion(SSL *s) 2651{ 2652 return (NULL); 2653} 2654 2655size_t 2656SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2657{ 2658 size_t len = sizeof(s->s3->client_random); 2659 2660 if (out == NULL) 2661 return len; 2662 2663 if (len > max_out) 2664 len = max_out; 2665 2666 memcpy(out, s->s3->client_random, len); 2667 2668 return len; 2669} 2670 2671size_t 2672SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2673{ 2674 size_t len = sizeof(s->s3->server_random); 2675 2676 if (out == NULL) 2677 return len; 2678 2679 if (len > max_out) 2680 len = max_out; 2681 2682 memcpy(out, s->s3->server_random, len); 2683 2684 return len; 2685} 2686 2687int 2688ssl_init_wbio_buffer(SSL *s, int push) 2689{ 2690 BIO *bbio; 2691 2692 if (s->bbio == NULL) { 2693 bbio = BIO_new(BIO_f_buffer()); 2694 if (bbio == NULL) 2695 return (0); 2696 s->bbio = bbio; 2697 } else { 2698 bbio = s->bbio; 2699 if (s->bbio == s->wbio) 2700 s->wbio = BIO_pop(s->wbio); 2701 } 2702 (void)BIO_reset(bbio); 2703/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2704 if (!BIO_set_read_buffer_size(bbio, 1)) { 2705 SSLerror(s, ERR_R_BUF_LIB); 2706 return (0); 2707 } 2708 if (push) { 2709 if (s->wbio != bbio) 2710 s->wbio = BIO_push(bbio, s->wbio); 2711 } else { 2712 if (s->wbio == bbio) 2713 s->wbio = BIO_pop(bbio); 2714 } 2715 return (1); 2716} 2717 2718void 2719ssl_free_wbio_buffer(SSL *s) 2720{ 2721 if (s == NULL) 2722 return; 2723 2724 if (s->bbio == NULL) 2725 return; 2726 2727 if (s->bbio == s->wbio) { 2728 /* remove buffering */ 2729 s->wbio = BIO_pop(s->wbio); 2730 } 2731 BIO_free(s->bbio); 2732 s->bbio = NULL; 2733} 2734 2735void 2736SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2737{ 2738 ctx->internal->quiet_shutdown = mode; 2739} 2740 2741int 2742SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2743{ 2744 return (ctx->internal->quiet_shutdown); 2745} 2746 2747void 2748SSL_set_quiet_shutdown(SSL *s, int mode) 2749{ 2750 s->internal->quiet_shutdown = mode; 2751} 2752 2753int 2754SSL_get_quiet_shutdown(const SSL *s) 2755{ 2756 return (s->internal->quiet_shutdown); 2757} 2758 2759void 2760SSL_set_shutdown(SSL *s, int mode) 2761{ 2762 s->internal->shutdown = mode; 2763} 2764 2765int 2766SSL_get_shutdown(const SSL *s) 2767{ 2768 return (s->internal->shutdown); 2769} 2770 2771int 2772SSL_version(const SSL *s) 2773{ 2774 return (s->version); 2775} 2776 2777SSL_CTX * 2778SSL_get_SSL_CTX(const SSL *ssl) 2779{ 2780 return (ssl->ctx); 2781} 2782 2783SSL_CTX * 2784SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2785{ 2786 CERT *ocert = ssl->cert; 2787 2788 if (ssl->ctx == ctx) 2789 return (ssl->ctx); 2790 if (ctx == NULL) 2791 ctx = ssl->initial_ctx; 2792 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2793 if (ocert != NULL) { 2794 int i; 2795 /* Copy negotiated digests from original certificate. */ 2796 for (i = 0; i < SSL_PKEY_NUM; i++) 2797 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2798 ssl_cert_free(ocert); 2799 } 2800 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2801 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2802 ssl->ctx = ctx; 2803 return (ssl->ctx); 2804} 2805 2806int 2807SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2808{ 2809 return (X509_STORE_set_default_paths(ctx->cert_store)); 2810} 2811 2812int 2813SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2814 const char *CApath) 2815{ 2816 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2817} 2818 2819int 2820SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2821{ 2822 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2823} 2824 2825void 2826SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2827{ 2828 ssl->internal->info_callback = cb; 2829} 2830 2831void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2832{ 2833 return (ssl->internal->info_callback); 2834} 2835 2836int 2837SSL_state(const SSL *ssl) 2838{ 2839 return (S3I(ssl)->hs.state); 2840} 2841 2842void 2843SSL_set_state(SSL *ssl, int state) 2844{ 2845 S3I(ssl)->hs.state = state; 2846} 2847 2848void 2849SSL_set_verify_result(SSL *ssl, long arg) 2850{ 2851 ssl->verify_result = arg; 2852} 2853 2854long 2855SSL_get_verify_result(const SSL *ssl) 2856{ 2857 return (ssl->verify_result); 2858} 2859 2860int 2861SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2862 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2863{ 2864 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2865 new_func, dup_func, free_func)); 2866} 2867 2868int 2869SSL_set_ex_data(SSL *s, int idx, void *arg) 2870{ 2871 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2872} 2873 2874void * 2875SSL_get_ex_data(const SSL *s, int idx) 2876{ 2877 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2878} 2879 2880int 2881SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2882 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2883{ 2884 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2885 new_func, dup_func, free_func)); 2886} 2887 2888int 2889SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2890{ 2891 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2892} 2893 2894void * 2895SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2896{ 2897 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2898} 2899 2900int 2901ssl_ok(SSL *s) 2902{ 2903 return (1); 2904} 2905 2906X509_STORE * 2907SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2908{ 2909 return (ctx->cert_store); 2910} 2911 2912void 2913SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2914{ 2915 X509_STORE_free(ctx->cert_store); 2916 ctx->cert_store = store; 2917} 2918 2919X509 * 2920SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2921{ 2922 if (ctx->internal->cert == NULL) 2923 return NULL; 2924 2925 return ctx->internal->cert->key->x509; 2926} 2927 2928int 2929SSL_want(const SSL *s) 2930{ 2931 return (s->internal->rwstate); 2932} 2933 2934void 2935SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2936 int keylength)) 2937{ 2938 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2939} 2940 2941void 2942SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2943 int keylength)) 2944{ 2945 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2946} 2947 2948void 2949SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2950 int keylength)) 2951{ 2952 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2953} 2954 2955void 2956SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2957 int keylength)) 2958{ 2959 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2960} 2961 2962void 2963SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2964 int is_export, int keylength)) 2965{ 2966 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2967 (void (*)(void))ecdh); 2968} 2969 2970void 2971SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2972 int keylength)) 2973{ 2974 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2975} 2976 2977 2978void 2979SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2980 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2981{ 2982 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2983 (void (*)(void))cb); 2984} 2985 2986void 2987SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2988 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2989{ 2990 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2991} 2992 2993void 2994ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2995{ 2996 if (*hash) 2997 EVP_MD_CTX_destroy(*hash); 2998 *hash = NULL; 2999} 3000 3001void 3002SSL_set_debug(SSL *s, int debug) 3003{ 3004 s->internal->debug = debug; 3005} 3006 3007int 3008SSL_cache_hit(SSL *s) 3009{ 3010 return (s->internal->hit); 3011} 3012 3013int 3014SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3015{ 3016 return ssl_version_set_min(ctx->method, version, 3017 ctx->internal->max_version, &ctx->internal->min_version); 3018} 3019 3020int 3021SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3022{ 3023 return ssl_version_set_max(ctx->method, version, 3024 ctx->internal->min_version, &ctx->internal->max_version); 3025} 3026 3027int 3028SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3029{ 3030 return ssl_version_set_min(ssl->method, version, 3031 ssl->internal->max_version, &ssl->internal->min_version); 3032} 3033 3034int 3035SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3036{ 3037 return ssl_version_set_max(ssl->method, version, 3038 ssl->internal->min_version, &ssl->internal->max_version); 3039} 3040 3041static int 3042ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3043{ 3044 SSL_CIPHER const *a = a_; 3045 SSL_CIPHER const *b = b_; 3046 return ssl_cipher_id_cmp(a, b); 3047} 3048 3049SSL_CIPHER * 3050OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3051{ 3052 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3053 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3054} 3055