ssl_lib.c revision 1.176
1/* $OpenBSD: ssl_lib.c,v 1.176 2018/02/17 15:19:43 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 1317/* Specify the ciphers to be used by default by the SSL_CTX. */ 1318int 1319SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1320{ 1321 STACK_OF(SSL_CIPHER) *sk; 1322 1323 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1324 &ctx->internal->cipher_list_by_id, str); 1325 /* 1326 * ssl_create_cipher_list may return an empty stack if it 1327 * was unable to find a cipher matching the given rule string 1328 * (for example if the rule string specifies a cipher which 1329 * has been disabled). This is not an error as far as 1330 * ssl_create_cipher_list is concerned, and hence 1331 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1332 * updated. 1333 */ 1334 if (sk == NULL) 1335 return (0); 1336 else if (sk_SSL_CIPHER_num(sk) == 0) { 1337 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1338 return (0); 1339 } 1340 return (1); 1341} 1342 1343/* Specify the ciphers to be used by the SSL. */ 1344int 1345SSL_set_cipher_list(SSL *s, const char *str) 1346{ 1347 STACK_OF(SSL_CIPHER) *sk; 1348 1349 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1350 &s->internal->cipher_list_by_id, str); 1351 /* see comment in SSL_CTX_set_cipher_list */ 1352 if (sk == NULL) 1353 return (0); 1354 else if (sk_SSL_CIPHER_num(sk) == 0) { 1355 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1356 return (0); 1357 } 1358 return (1); 1359} 1360 1361/* works well for SSLv2, not so good for SSLv3 */ 1362char * 1363SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1364{ 1365 char *end; 1366 STACK_OF(SSL_CIPHER) *sk; 1367 SSL_CIPHER *c; 1368 size_t curlen = 0; 1369 int i; 1370 1371 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1372 return (NULL); 1373 1374 sk = s->session->ciphers; 1375 if (sk_SSL_CIPHER_num(sk) == 0) 1376 return (NULL); 1377 1378 buf[0] = '\0'; 1379 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1380 c = sk_SSL_CIPHER_value(sk, i); 1381 end = buf + curlen; 1382 if (strlcat(buf, c->name, len) >= len || 1383 (curlen = strlcat(buf, ":", len)) >= len) { 1384 /* remove truncated cipher from list */ 1385 *end = '\0'; 1386 break; 1387 } 1388 } 1389 /* remove trailing colon */ 1390 if ((end = strrchr(buf, ':')) != NULL) 1391 *end = '\0'; 1392 return (buf); 1393} 1394 1395int 1396ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1397{ 1398 SSL_CIPHER *cipher; 1399 int num_ciphers = 0; 1400 int i; 1401 1402 if (ciphers == NULL) 1403 return 0; 1404 1405 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1406 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1407 return 0; 1408 1409 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1410 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1411 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1412 continue; 1413 1414 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1415 return 0; 1416 1417 num_ciphers++; 1418 } 1419 1420 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1421 if (num_ciphers > 0 && !s->internal->renegotiate) { 1422 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1423 return 0; 1424 } 1425 1426 if (!CBB_flush(cbb)) 1427 return 0; 1428 1429 return 1; 1430} 1431 1432STACK_OF(SSL_CIPHER) * 1433ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1434{ 1435 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1436 const SSL_CIPHER *cipher; 1437 uint16_t cipher_value, max_version; 1438 unsigned long cipher_id; 1439 1440 if (s->s3 != NULL) 1441 S3I(s)->send_connection_binding = 0; 1442 1443 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1444 SSLerror(s, ERR_R_MALLOC_FAILURE); 1445 goto err; 1446 } 1447 1448 while (CBS_len(cbs) > 0) { 1449 if (!CBS_get_u16(cbs, &cipher_value)) { 1450 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1451 goto err; 1452 } 1453 1454 cipher_id = SSL3_CK_ID | cipher_value; 1455 1456 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1457 /* 1458 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1459 * renegotiating. 1460 */ 1461 if (s->internal->renegotiate) { 1462 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1463 ssl3_send_alert(s, SSL3_AL_FATAL, 1464 SSL_AD_HANDSHAKE_FAILURE); 1465 1466 goto err; 1467 } 1468 S3I(s)->send_connection_binding = 1; 1469 continue; 1470 } 1471 1472 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1473 /* 1474 * TLS_FALLBACK_SCSV indicates that the client 1475 * previously tried a higher protocol version. 1476 * Fail if the current version is an unexpected 1477 * downgrade. 1478 */ 1479 max_version = ssl_max_server_version(s); 1480 if (max_version == 0 || s->version < max_version) { 1481 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1482 if (s->s3 != NULL) 1483 ssl3_send_alert(s, SSL3_AL_FATAL, 1484 SSL_AD_INAPPROPRIATE_FALLBACK); 1485 goto err; 1486 } 1487 continue; 1488 } 1489 1490 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1491 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1492 SSLerror(s, ERR_R_MALLOC_FAILURE); 1493 goto err; 1494 } 1495 } 1496 } 1497 1498 return (ciphers); 1499 1500err: 1501 sk_SSL_CIPHER_free(ciphers); 1502 1503 return (NULL); 1504} 1505 1506 1507/* 1508 * Return a servername extension value if provided in Client Hello, or NULL. 1509 * So far, only host_name types are defined (RFC 3546). 1510 */ 1511const char * 1512SSL_get_servername(const SSL *s, const int type) 1513{ 1514 if (type != TLSEXT_NAMETYPE_host_name) 1515 return (NULL); 1516 1517 return (s->session && !s->tlsext_hostname ? 1518 s->session->tlsext_hostname : 1519 s->tlsext_hostname); 1520} 1521 1522int 1523SSL_get_servername_type(const SSL *s) 1524{ 1525 if (s->session && 1526 (!s->tlsext_hostname ? 1527 s->session->tlsext_hostname : s->tlsext_hostname)) 1528 return (TLSEXT_NAMETYPE_host_name); 1529 return (-1); 1530} 1531 1532/* 1533 * SSL_select_next_proto implements standard protocol selection. It is 1534 * expected that this function is called from the callback set by 1535 * SSL_CTX_set_alpn_select_cb. 1536 * 1537 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1538 * strings. The length byte itself is not included in the length. A byte 1539 * string of length 0 is invalid. No byte string may be truncated. 1540 * 1541 * It returns either: 1542 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1543 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1544 */ 1545int 1546SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1547 const unsigned char *server, unsigned int server_len, 1548 const unsigned char *client, unsigned int client_len) 1549{ 1550 unsigned int i, j; 1551 const unsigned char *result; 1552 int status = OPENSSL_NPN_UNSUPPORTED; 1553 1554 /* 1555 * For each protocol in server preference order, 1556 * see if we support it. 1557 */ 1558 for (i = 0; i < server_len; ) { 1559 for (j = 0; j < client_len; ) { 1560 if (server[i] == client[j] && 1561 memcmp(&server[i + 1], 1562 &client[j + 1], server[i]) == 0) { 1563 /* We found a match */ 1564 result = &server[i]; 1565 status = OPENSSL_NPN_NEGOTIATED; 1566 goto found; 1567 } 1568 j += client[j]; 1569 j++; 1570 } 1571 i += server[i]; 1572 i++; 1573 } 1574 1575 /* There's no overlap between our protocols and the server's list. */ 1576 result = client; 1577 status = OPENSSL_NPN_NO_OVERLAP; 1578 1579found: 1580 *out = (unsigned char *) result + 1; 1581 *outlen = result[0]; 1582 return (status); 1583} 1584 1585/* SSL_get0_next_proto_negotiated is deprecated. */ 1586void 1587SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1588 unsigned *len) 1589{ 1590 *data = NULL; 1591 *len = 0; 1592} 1593 1594/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1595void 1596SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1597 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1598{ 1599} 1600 1601/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1602void 1603SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1604 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1605 unsigned int inlen, void *arg), void *arg) 1606{ 1607} 1608 1609/* 1610 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1611 * protocols, which must be in wire-format (i.e. a series of non-empty, 1612 * 8-bit length-prefixed strings). Returns 0 on success. 1613 */ 1614int 1615SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1616 unsigned int protos_len) 1617{ 1618 int failed = 1; 1619 1620 if (protos == NULL || protos_len == 0) 1621 goto err; 1622 1623 free(ctx->internal->alpn_client_proto_list); 1624 ctx->internal->alpn_client_proto_list = NULL; 1625 ctx->internal->alpn_client_proto_list_len = 0; 1626 1627 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1628 == NULL) 1629 goto err; 1630 ctx->internal->alpn_client_proto_list_len = protos_len; 1631 1632 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1633 1634 failed = 0; 1635 1636 err: 1637 /* NOTE: Return values are the reverse of what you expect. */ 1638 return (failed); 1639} 1640 1641/* 1642 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1643 * protocols, which must be in wire-format (i.e. a series of non-empty, 1644 * 8-bit length-prefixed strings). Returns 0 on success. 1645 */ 1646int 1647SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1648 unsigned int protos_len) 1649{ 1650 int failed = 1; 1651 1652 if (protos == NULL || protos_len == 0) 1653 goto err; 1654 1655 free(ssl->internal->alpn_client_proto_list); 1656 ssl->internal->alpn_client_proto_list = NULL; 1657 ssl->internal->alpn_client_proto_list_len = 0; 1658 1659 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1660 == NULL) 1661 goto err; 1662 ssl->internal->alpn_client_proto_list_len = protos_len; 1663 1664 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1665 1666 failed = 0; 1667 1668 err: 1669 /* NOTE: Return values are the reverse of what you expect. */ 1670 return (failed); 1671} 1672 1673/* 1674 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1675 * ClientHello processing in order to select an ALPN protocol from the 1676 * client's list of offered protocols. 1677 */ 1678void 1679SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1680 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1681 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1682{ 1683 ctx->internal->alpn_select_cb = cb; 1684 ctx->internal->alpn_select_cb_arg = arg; 1685} 1686 1687/* 1688 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1689 * it sets data to point to len bytes of protocol name (not including the 1690 * leading length-prefix byte). If the server didn't respond with* a negotiated 1691 * protocol then len will be zero. 1692 */ 1693void 1694SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1695 unsigned *len) 1696{ 1697 *data = NULL; 1698 *len = 0; 1699 1700 if (ssl->s3 != NULL) { 1701 *data = ssl->s3->internal->alpn_selected; 1702 *len = ssl->s3->internal->alpn_selected_len; 1703 } 1704} 1705 1706int 1707SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1708 const char *label, size_t llen, const unsigned char *p, size_t plen, 1709 int use_context) 1710{ 1711 return (tls1_export_keying_material(s, out, olen, 1712 label, llen, p, plen, use_context)); 1713} 1714 1715static unsigned long 1716ssl_session_hash(const SSL_SESSION *a) 1717{ 1718 unsigned long l; 1719 1720 l = (unsigned long) 1721 ((unsigned int) a->session_id[0] )| 1722 ((unsigned int) a->session_id[1]<< 8L)| 1723 ((unsigned long)a->session_id[2]<<16L)| 1724 ((unsigned long)a->session_id[3]<<24L); 1725 return (l); 1726} 1727 1728/* 1729 * NB: If this function (or indeed the hash function which uses a sort of 1730 * coarser function than this one) is changed, ensure 1731 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1732 * able to construct an SSL_SESSION that will collide with any existing session 1733 * with a matching session ID. 1734 */ 1735static int 1736ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1737{ 1738 if (a->ssl_version != b->ssl_version) 1739 return (1); 1740 if (a->session_id_length != b->session_id_length) 1741 return (1); 1742 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1743 return (1); 1744 return (0); 1745} 1746 1747/* 1748 * These wrapper functions should remain rather than redeclaring 1749 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1750 * variable. The reason is that the functions aren't static, they're exposed via 1751 * ssl.h. 1752 */ 1753static unsigned long 1754ssl_session_LHASH_HASH(const void *arg) 1755{ 1756 const SSL_SESSION *a = arg; 1757 1758 return ssl_session_hash(a); 1759} 1760 1761static int 1762ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1763{ 1764 const SSL_SESSION *a = arg1; 1765 const SSL_SESSION *b = arg2; 1766 1767 return ssl_session_cmp(a, b); 1768} 1769 1770SSL_CTX * 1771SSL_CTX_new(const SSL_METHOD *meth) 1772{ 1773 SSL_CTX *ret; 1774 1775 if (meth == NULL) { 1776 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1777 return (NULL); 1778 } 1779 1780 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1781 SSLerrorx(ERR_R_MALLOC_FAILURE); 1782 return (NULL); 1783 } 1784 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1785 free(ret); 1786 SSLerrorx(ERR_R_MALLOC_FAILURE); 1787 return (NULL); 1788 } 1789 1790 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1791 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1792 goto err; 1793 } 1794 1795 ret->method = meth; 1796 ret->internal->min_version = meth->internal->min_version; 1797 ret->internal->max_version = meth->internal->max_version; 1798 1799 ret->cert_store = NULL; 1800 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1801 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1802 ret->internal->session_cache_head = NULL; 1803 ret->internal->session_cache_tail = NULL; 1804 1805 /* We take the system default */ 1806 ret->session_timeout = meth->internal->get_timeout(); 1807 1808 ret->internal->new_session_cb = 0; 1809 ret->internal->remove_session_cb = 0; 1810 ret->internal->get_session_cb = 0; 1811 ret->internal->generate_session_id = 0; 1812 1813 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1814 1815 ret->references = 1; 1816 ret->internal->quiet_shutdown = 0; 1817 1818 ret->internal->info_callback = NULL; 1819 1820 ret->internal->app_verify_callback = 0; 1821 ret->internal->app_verify_arg = NULL; 1822 1823 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1824 ret->internal->read_ahead = 0; 1825 ret->internal->msg_callback = 0; 1826 ret->internal->msg_callback_arg = NULL; 1827 ret->verify_mode = SSL_VERIFY_NONE; 1828 ret->sid_ctx_length = 0; 1829 ret->internal->default_verify_callback = NULL; 1830 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1831 goto err; 1832 1833 ret->default_passwd_callback = 0; 1834 ret->default_passwd_callback_userdata = NULL; 1835 ret->internal->client_cert_cb = 0; 1836 ret->internal->app_gen_cookie_cb = 0; 1837 ret->internal->app_verify_cookie_cb = 0; 1838 1839 ret->internal->sessions = lh_SSL_SESSION_new(); 1840 if (ret->internal->sessions == NULL) 1841 goto err; 1842 ret->cert_store = X509_STORE_new(); 1843 if (ret->cert_store == NULL) 1844 goto err; 1845 1846 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1847 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1848 if (ret->cipher_list == NULL || 1849 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1850 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1851 goto err2; 1852 } 1853 1854 ret->param = X509_VERIFY_PARAM_new(); 1855 if (!ret->param) 1856 goto err; 1857 1858 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1859 goto err; 1860 1861 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1862 1863 ret->extra_certs = NULL; 1864 1865 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1866 1867 ret->internal->tlsext_servername_callback = 0; 1868 ret->internal->tlsext_servername_arg = NULL; 1869 1870 /* Setup RFC4507 ticket keys */ 1871 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1872 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1873 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1874 1875 ret->internal->tlsext_status_cb = 0; 1876 ret->internal->tlsext_status_arg = NULL; 1877 1878#ifndef OPENSSL_NO_ENGINE 1879 ret->internal->client_cert_engine = NULL; 1880#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1881#define eng_strx(x) #x 1882#define eng_str(x) eng_strx(x) 1883 /* Use specific client engine automatically... ignore errors */ 1884 { 1885 ENGINE *eng; 1886 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1887 if (!eng) { 1888 ERR_clear_error(); 1889 ENGINE_load_builtin_engines(); 1890 eng = ENGINE_by_id(eng_str( 1891 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1892 } 1893 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1894 ERR_clear_error(); 1895 } 1896#endif 1897#endif 1898 /* 1899 * Default is to connect to non-RI servers. When RI is more widely 1900 * deployed might change this. 1901 */ 1902 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1903 1904 return (ret); 1905err: 1906 SSLerrorx(ERR_R_MALLOC_FAILURE); 1907err2: 1908 SSL_CTX_free(ret); 1909 return (NULL); 1910} 1911 1912void 1913SSL_CTX_free(SSL_CTX *ctx) 1914{ 1915 int i; 1916 1917 if (ctx == NULL) 1918 return; 1919 1920 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1921 if (i > 0) 1922 return; 1923 1924 X509_VERIFY_PARAM_free(ctx->param); 1925 1926 /* 1927 * Free internal session cache. However: the remove_cb() may reference 1928 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1929 * after the sessions were flushed. 1930 * As the ex_data handling routines might also touch the session cache, 1931 * the most secure solution seems to be: empty (flush) the cache, then 1932 * free ex_data, then finally free the cache. 1933 * (See ticket [openssl.org #212].) 1934 */ 1935 if (ctx->internal->sessions != NULL) 1936 SSL_CTX_flush_sessions(ctx, 0); 1937 1938 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1939 1940 lh_SSL_SESSION_free(ctx->internal->sessions); 1941 1942 X509_STORE_free(ctx->cert_store); 1943 sk_SSL_CIPHER_free(ctx->cipher_list); 1944 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1945 ssl_cert_free(ctx->internal->cert); 1946 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1947 sk_X509_pop_free(ctx->extra_certs, X509_free); 1948 1949#ifndef OPENSSL_NO_SRTP 1950 if (ctx->internal->srtp_profiles) 1951 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1952#endif 1953 1954#ifndef OPENSSL_NO_ENGINE 1955 if (ctx->internal->client_cert_engine) 1956 ENGINE_finish(ctx->internal->client_cert_engine); 1957#endif 1958 1959 free(ctx->internal->tlsext_ecpointformatlist); 1960 free(ctx->internal->tlsext_supportedgroups); 1961 1962 free(ctx->internal->alpn_client_proto_list); 1963 1964 free(ctx->internal); 1965 free(ctx); 1966} 1967 1968int 1969SSL_CTX_up_ref(SSL_CTX *ctx) 1970{ 1971 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1972 return ((refs > 1) ? 1 : 0); 1973} 1974 1975void 1976SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1977{ 1978 ctx->default_passwd_callback = cb; 1979} 1980 1981void 1982SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1983{ 1984 ctx->default_passwd_callback_userdata = u; 1985} 1986 1987void 1988SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1989 void *), void *arg) 1990{ 1991 ctx->internal->app_verify_callback = cb; 1992 ctx->internal->app_verify_arg = arg; 1993} 1994 1995void 1996SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1997{ 1998 ctx->verify_mode = mode; 1999 ctx->internal->default_verify_callback = cb; 2000} 2001 2002void 2003SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2004{ 2005 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2006} 2007 2008void 2009ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2010{ 2011 int rsa_enc, rsa_sign, dh_tmp; 2012 int have_ecc_cert; 2013 unsigned long mask_k, mask_a; 2014 X509 *x = NULL; 2015 CERT_PKEY *cpk; 2016 2017 if (c == NULL) 2018 return; 2019 2020 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2021 c->dh_tmp_auto != 0); 2022 2023 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2024 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2025 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2026 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2027 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2028 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2029 2030 mask_k = 0; 2031 mask_a = 0; 2032 2033 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2034 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2035 mask_k |= SSL_kGOST; 2036 mask_a |= SSL_aGOST01; 2037 } 2038 2039 if (rsa_enc) 2040 mask_k |= SSL_kRSA; 2041 2042 if (dh_tmp) 2043 mask_k |= SSL_kDHE; 2044 2045 if (rsa_enc || rsa_sign) 2046 mask_a |= SSL_aRSA; 2047 2048 mask_a |= SSL_aNULL; 2049 2050 /* 2051 * An ECC certificate may be usable for ECDH and/or 2052 * ECDSA cipher suites depending on the key usage extension. 2053 */ 2054 if (have_ecc_cert) { 2055 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2056 2057 /* This call populates extension flags (ex_flags). */ 2058 X509_check_purpose(x, -1, 0); 2059 2060 /* Key usage, if present, must allow signing. */ 2061 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2062 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2063 mask_a |= SSL_aECDSA; 2064 } 2065 2066 mask_k |= SSL_kECDHE; 2067 2068 c->mask_k = mask_k; 2069 c->mask_a = mask_a; 2070 c->valid = 1; 2071} 2072 2073/* See if this handshake is using an ECC cipher suite. */ 2074int 2075ssl_using_ecc_cipher(SSL *s) 2076{ 2077 unsigned long alg_a, alg_k; 2078 2079 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2080 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2081 2082 return SSI(s)->tlsext_ecpointformatlist != NULL && 2083 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2084 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2085} 2086 2087int 2088ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2089{ 2090 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2091 unsigned long alg_a; 2092 2093 alg_a = cs->algorithm_auth; 2094 2095 if (alg_a & SSL_aECDSA) { 2096 /* This call populates extension flags (ex_flags). */ 2097 X509_check_purpose(x, -1, 0); 2098 2099 /* Key usage, if present, must allow signing. */ 2100 if ((x->ex_flags & EXFLAG_KUSAGE) && 2101 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2102 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2103 return (0); 2104 } 2105 } 2106 2107 return (1); 2108} 2109 2110CERT_PKEY * 2111ssl_get_server_send_pkey(const SSL *s) 2112{ 2113 unsigned long alg_a; 2114 CERT *c; 2115 int i; 2116 2117 c = s->cert; 2118 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2119 2120 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2121 2122 if (alg_a & SSL_aECDSA) { 2123 i = SSL_PKEY_ECC; 2124 } else if (alg_a & SSL_aRSA) { 2125 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2126 i = SSL_PKEY_RSA_SIGN; 2127 else 2128 i = SSL_PKEY_RSA_ENC; 2129 } else if (alg_a & SSL_aGOST01) { 2130 i = SSL_PKEY_GOST01; 2131 } else { /* if (alg_a & SSL_aNULL) */ 2132 SSLerror(s, ERR_R_INTERNAL_ERROR); 2133 return (NULL); 2134 } 2135 2136 return (c->pkeys + i); 2137} 2138 2139X509 * 2140ssl_get_server_send_cert(const SSL *s) 2141{ 2142 CERT_PKEY *cpk; 2143 2144 cpk = ssl_get_server_send_pkey(s); 2145 if (!cpk) 2146 return (NULL); 2147 return (cpk->x509); 2148} 2149 2150EVP_PKEY * 2151ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2152{ 2153 unsigned long alg_a; 2154 CERT *c; 2155 int idx = -1; 2156 2157 alg_a = cipher->algorithm_auth; 2158 c = s->cert; 2159 2160 if (alg_a & SSL_aRSA) { 2161 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2162 idx = SSL_PKEY_RSA_SIGN; 2163 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2164 idx = SSL_PKEY_RSA_ENC; 2165 } else if ((alg_a & SSL_aECDSA) && 2166 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2167 idx = SSL_PKEY_ECC; 2168 if (idx == -1) { 2169 SSLerror(s, ERR_R_INTERNAL_ERROR); 2170 return (NULL); 2171 } 2172 if (pmd) 2173 *pmd = c->pkeys[idx].digest; 2174 return (c->pkeys[idx].privatekey); 2175} 2176 2177DH * 2178ssl_get_auto_dh(SSL *s) 2179{ 2180 CERT_PKEY *cpk; 2181 int keylen; 2182 DH *dhp; 2183 2184 if (s->cert->dh_tmp_auto == 2) { 2185 keylen = 1024; 2186 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2187 keylen = 1024; 2188 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2189 keylen = 3072; 2190 } else { 2191 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2192 return (NULL); 2193 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2194 return (NULL); 2195 keylen = EVP_PKEY_bits(cpk->privatekey); 2196 } 2197 2198 if ((dhp = DH_new()) == NULL) 2199 return (NULL); 2200 2201 dhp->g = BN_new(); 2202 if (dhp->g != NULL) 2203 BN_set_word(dhp->g, 2); 2204 2205 if (keylen >= 8192) 2206 dhp->p = get_rfc3526_prime_8192(NULL); 2207 else if (keylen >= 4096) 2208 dhp->p = get_rfc3526_prime_4096(NULL); 2209 else if (keylen >= 3072) 2210 dhp->p = get_rfc3526_prime_3072(NULL); 2211 else if (keylen >= 2048) 2212 dhp->p = get_rfc3526_prime_2048(NULL); 2213 else if (keylen >= 1536) 2214 dhp->p = get_rfc3526_prime_1536(NULL); 2215 else 2216 dhp->p = get_rfc2409_prime_1024(NULL); 2217 2218 if (dhp->p == NULL || dhp->g == NULL) { 2219 DH_free(dhp); 2220 return (NULL); 2221 } 2222 return (dhp); 2223} 2224 2225void 2226ssl_update_cache(SSL *s, int mode) 2227{ 2228 int i; 2229 2230 /* 2231 * If the session_id_length is 0, we are not supposed to cache it, 2232 * and it would be rather hard to do anyway :-) 2233 */ 2234 if (s->session->session_id_length == 0) 2235 return; 2236 2237 i = s->session_ctx->internal->session_cache_mode; 2238 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2239 || SSL_CTX_add_session(s->session_ctx, s->session)) 2240 && (s->session_ctx->internal->new_session_cb != NULL)) { 2241 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2242 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2243 SSL_SESSION_free(s->session); 2244 } 2245 2246 /* auto flush every 255 connections */ 2247 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2248 ((i & mode) == mode)) { 2249 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2250 s->session_ctx->internal->stats.sess_connect_good : 2251 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2252 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2253 } 2254 } 2255} 2256 2257const SSL_METHOD * 2258SSL_get_ssl_method(SSL *s) 2259{ 2260 return (s->method); 2261} 2262 2263int 2264SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2265{ 2266 int conn = -1; 2267 int ret = 1; 2268 2269 if (s->method != meth) { 2270 if (s->internal->handshake_func != NULL) 2271 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2272 2273 if (s->method->internal->version == meth->internal->version) 2274 s->method = meth; 2275 else { 2276 s->method->internal->ssl_free(s); 2277 s->method = meth; 2278 ret = s->method->internal->ssl_new(s); 2279 } 2280 2281 if (conn == 1) 2282 s->internal->handshake_func = meth->internal->ssl_connect; 2283 else if (conn == 0) 2284 s->internal->handshake_func = meth->internal->ssl_accept; 2285 } 2286 return (ret); 2287} 2288 2289int 2290SSL_get_error(const SSL *s, int i) 2291{ 2292 int reason; 2293 unsigned long l; 2294 BIO *bio; 2295 2296 if (i > 0) 2297 return (SSL_ERROR_NONE); 2298 2299 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2300 * etc, where we do encode the error */ 2301 if ((l = ERR_peek_error()) != 0) { 2302 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2303 return (SSL_ERROR_SYSCALL); 2304 else 2305 return (SSL_ERROR_SSL); 2306 } 2307 2308 if ((i < 0) && SSL_want_read(s)) { 2309 bio = SSL_get_rbio(s); 2310 if (BIO_should_read(bio)) { 2311 return (SSL_ERROR_WANT_READ); 2312 } else if (BIO_should_write(bio)) { 2313 /* 2314 * This one doesn't make too much sense... We never 2315 * try to write to the rbio, and an application 2316 * program where rbio and wbio are separate couldn't 2317 * even know what it should wait for. However if we 2318 * ever set s->internal->rwstate incorrectly (so that we have 2319 * SSL_want_read(s) instead of SSL_want_write(s)) 2320 * and rbio and wbio *are* the same, this test works 2321 * around that bug; so it might be safer to keep it. 2322 */ 2323 return (SSL_ERROR_WANT_WRITE); 2324 } else if (BIO_should_io_special(bio)) { 2325 reason = BIO_get_retry_reason(bio); 2326 if (reason == BIO_RR_CONNECT) 2327 return (SSL_ERROR_WANT_CONNECT); 2328 else if (reason == BIO_RR_ACCEPT) 2329 return (SSL_ERROR_WANT_ACCEPT); 2330 else 2331 return (SSL_ERROR_SYSCALL); /* unknown */ 2332 } 2333 } 2334 2335 if ((i < 0) && SSL_want_write(s)) { 2336 bio = SSL_get_wbio(s); 2337 if (BIO_should_write(bio)) { 2338 return (SSL_ERROR_WANT_WRITE); 2339 } else if (BIO_should_read(bio)) { 2340 /* 2341 * See above (SSL_want_read(s) with 2342 * BIO_should_write(bio)) 2343 */ 2344 return (SSL_ERROR_WANT_READ); 2345 } else if (BIO_should_io_special(bio)) { 2346 reason = BIO_get_retry_reason(bio); 2347 if (reason == BIO_RR_CONNECT) 2348 return (SSL_ERROR_WANT_CONNECT); 2349 else if (reason == BIO_RR_ACCEPT) 2350 return (SSL_ERROR_WANT_ACCEPT); 2351 else 2352 return (SSL_ERROR_SYSCALL); 2353 } 2354 } 2355 if ((i < 0) && SSL_want_x509_lookup(s)) { 2356 return (SSL_ERROR_WANT_X509_LOOKUP); 2357 } 2358 2359 if (i == 0) { 2360 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2361 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2362 return (SSL_ERROR_ZERO_RETURN); 2363 } 2364 return (SSL_ERROR_SYSCALL); 2365} 2366 2367int 2368SSL_do_handshake(SSL *s) 2369{ 2370 int ret = 1; 2371 2372 if (s->internal->handshake_func == NULL) { 2373 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2374 return (-1); 2375 } 2376 2377 s->method->internal->ssl_renegotiate_check(s); 2378 2379 if (SSL_in_init(s) || SSL_in_before(s)) { 2380 ret = s->internal->handshake_func(s); 2381 } 2382 return (ret); 2383} 2384 2385/* 2386 * For the next 2 functions, SSL_clear() sets shutdown and so 2387 * one of these calls will reset it 2388 */ 2389void 2390SSL_set_accept_state(SSL *s) 2391{ 2392 s->server = 1; 2393 s->internal->shutdown = 0; 2394 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2395 s->internal->handshake_func = s->method->internal->ssl_accept; 2396 /* clear the current cipher */ 2397 ssl_clear_cipher_ctx(s); 2398 ssl_clear_hash_ctx(&s->read_hash); 2399 ssl_clear_hash_ctx(&s->internal->write_hash); 2400} 2401 2402void 2403SSL_set_connect_state(SSL *s) 2404{ 2405 s->server = 0; 2406 s->internal->shutdown = 0; 2407 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2408 s->internal->handshake_func = s->method->internal->ssl_connect; 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 2415int 2416ssl_undefined_function(SSL *s) 2417{ 2418 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2419 return (0); 2420} 2421 2422int 2423ssl_undefined_void_function(void) 2424{ 2425 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2426 return (0); 2427} 2428 2429int 2430ssl_undefined_const_function(const SSL *s) 2431{ 2432 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2433 return (0); 2434} 2435 2436const char * 2437ssl_version_string(int ver) 2438{ 2439 switch (ver) { 2440 case DTLS1_VERSION: 2441 return (SSL_TXT_DTLS1); 2442 case TLS1_VERSION: 2443 return (SSL_TXT_TLSV1); 2444 case TLS1_1_VERSION: 2445 return (SSL_TXT_TLSV1_1); 2446 case TLS1_2_VERSION: 2447 return (SSL_TXT_TLSV1_2); 2448 default: 2449 return ("unknown"); 2450 } 2451} 2452 2453const char * 2454SSL_get_version(const SSL *s) 2455{ 2456 return ssl_version_string(s->version); 2457} 2458 2459SSL * 2460SSL_dup(SSL *s) 2461{ 2462 STACK_OF(X509_NAME) *sk; 2463 X509_NAME *xn; 2464 SSL *ret; 2465 int i; 2466 2467 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2468 return (NULL); 2469 2470 ret->version = s->version; 2471 ret->internal->type = s->internal->type; 2472 ret->method = s->method; 2473 2474 if (s->session != NULL) { 2475 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2476 SSL_copy_session_id(ret, s); 2477 } else { 2478 /* 2479 * No session has been established yet, so we have to expect 2480 * that s->cert or ret->cert will be changed later -- 2481 * they should not both point to the same object, 2482 * and thus we can't use SSL_copy_session_id. 2483 */ 2484 2485 ret->method->internal->ssl_free(ret); 2486 ret->method = s->method; 2487 ret->method->internal->ssl_new(ret); 2488 2489 if (s->cert != NULL) { 2490 ssl_cert_free(ret->cert); 2491 ret->cert = ssl_cert_dup(s->cert); 2492 if (ret->cert == NULL) 2493 goto err; 2494 } 2495 2496 SSL_set_session_id_context(ret, 2497 s->sid_ctx, s->sid_ctx_length); 2498 } 2499 2500 ret->internal->options = s->internal->options; 2501 ret->internal->mode = s->internal->mode; 2502 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2503 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2504 ret->internal->msg_callback = s->internal->msg_callback; 2505 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2506 SSL_set_verify(ret, SSL_get_verify_mode(s), 2507 SSL_get_verify_callback(s)); 2508 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2509 ret->internal->generate_session_id = s->internal->generate_session_id; 2510 2511 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2512 2513 ret->internal->debug = s->internal->debug; 2514 2515 /* copy app data, a little dangerous perhaps */ 2516 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2517 &ret->internal->ex_data, &s->internal->ex_data)) 2518 goto err; 2519 2520 /* setup rbio, and wbio */ 2521 if (s->rbio != NULL) { 2522 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2523 goto err; 2524 } 2525 if (s->wbio != NULL) { 2526 if (s->wbio != s->rbio) { 2527 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2528 goto err; 2529 } else 2530 ret->wbio = ret->rbio; 2531 } 2532 ret->internal->rwstate = s->internal->rwstate; 2533 ret->internal->in_handshake = s->internal->in_handshake; 2534 ret->internal->handshake_func = s->internal->handshake_func; 2535 ret->server = s->server; 2536 ret->internal->renegotiate = s->internal->renegotiate; 2537 ret->internal->new_session = s->internal->new_session; 2538 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2539 ret->internal->shutdown = s->internal->shutdown; 2540 /* SSL_dup does not really work at any state, though */ 2541 S3I(ret)->hs.state = S3I(s)->hs.state; 2542 ret->internal->rstate = s->internal->rstate; 2543 2544 /* 2545 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2546 * ret->init_off 2547 */ 2548 ret->internal->init_num = 0; 2549 2550 ret->internal->hit = s->internal->hit; 2551 2552 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2553 2554 /* dup the cipher_list and cipher_list_by_id stacks */ 2555 if (s->cipher_list != NULL) { 2556 if ((ret->cipher_list = 2557 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2558 goto err; 2559 } 2560 if (s->internal->cipher_list_by_id != NULL) { 2561 if ((ret->internal->cipher_list_by_id = 2562 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2563 goto err; 2564 } 2565 2566 /* Dup the client_CA list */ 2567 if (s->internal->client_CA != NULL) { 2568 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2569 ret->internal->client_CA = sk; 2570 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2571 xn = sk_X509_NAME_value(sk, i); 2572 if (sk_X509_NAME_set(sk, i, 2573 X509_NAME_dup(xn)) == NULL) { 2574 X509_NAME_free(xn); 2575 goto err; 2576 } 2577 } 2578 } 2579 2580 if (0) { 2581err: 2582 if (ret != NULL) 2583 SSL_free(ret); 2584 ret = NULL; 2585 } 2586 return (ret); 2587} 2588 2589void 2590ssl_clear_cipher_ctx(SSL *s) 2591{ 2592 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2593 s->enc_read_ctx = NULL; 2594 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2595 s->internal->enc_write_ctx = NULL; 2596 2597 if (s->internal->aead_read_ctx != NULL) { 2598 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2599 free(s->internal->aead_read_ctx); 2600 s->internal->aead_read_ctx = NULL; 2601 } 2602 if (s->internal->aead_write_ctx != NULL) { 2603 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2604 free(s->internal->aead_write_ctx); 2605 s->internal->aead_write_ctx = NULL; 2606 } 2607 2608} 2609 2610/* Fix this function so that it takes an optional type parameter */ 2611X509 * 2612SSL_get_certificate(const SSL *s) 2613{ 2614 if (s->cert != NULL) 2615 return (s->cert->key->x509); 2616 else 2617 return (NULL); 2618} 2619 2620/* Fix this function so that it takes an optional type parameter */ 2621EVP_PKEY * 2622SSL_get_privatekey(SSL *s) 2623{ 2624 if (s->cert != NULL) 2625 return (s->cert->key->privatekey); 2626 else 2627 return (NULL); 2628} 2629 2630const SSL_CIPHER * 2631SSL_get_current_cipher(const SSL *s) 2632{ 2633 if ((s->session != NULL) && (s->session->cipher != NULL)) 2634 return (s->session->cipher); 2635 return (NULL); 2636} 2637const void * 2638SSL_get_current_compression(SSL *s) 2639{ 2640 return (NULL); 2641} 2642 2643const void * 2644SSL_get_current_expansion(SSL *s) 2645{ 2646 return (NULL); 2647} 2648 2649size_t 2650SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2651{ 2652 size_t len = sizeof(s->s3->client_random); 2653 2654 if (out == NULL) 2655 return len; 2656 2657 if (len > max_out) 2658 len = max_out; 2659 2660 memcpy(out, s->s3->client_random, len); 2661 2662 return len; 2663} 2664 2665size_t 2666SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2667{ 2668 size_t len = sizeof(s->s3->server_random); 2669 2670 if (out == NULL) 2671 return len; 2672 2673 if (len > max_out) 2674 len = max_out; 2675 2676 memcpy(out, s->s3->server_random, len); 2677 2678 return len; 2679} 2680 2681int 2682ssl_init_wbio_buffer(SSL *s, int push) 2683{ 2684 BIO *bbio; 2685 2686 if (s->bbio == NULL) { 2687 bbio = BIO_new(BIO_f_buffer()); 2688 if (bbio == NULL) 2689 return (0); 2690 s->bbio = bbio; 2691 } else { 2692 bbio = s->bbio; 2693 if (s->bbio == s->wbio) 2694 s->wbio = BIO_pop(s->wbio); 2695 } 2696 (void)BIO_reset(bbio); 2697/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2698 if (!BIO_set_read_buffer_size(bbio, 1)) { 2699 SSLerror(s, ERR_R_BUF_LIB); 2700 return (0); 2701 } 2702 if (push) { 2703 if (s->wbio != bbio) 2704 s->wbio = BIO_push(bbio, s->wbio); 2705 } else { 2706 if (s->wbio == bbio) 2707 s->wbio = BIO_pop(bbio); 2708 } 2709 return (1); 2710} 2711 2712void 2713ssl_free_wbio_buffer(SSL *s) 2714{ 2715 if (s == NULL) 2716 return; 2717 2718 if (s->bbio == NULL) 2719 return; 2720 2721 if (s->bbio == s->wbio) { 2722 /* remove buffering */ 2723 s->wbio = BIO_pop(s->wbio); 2724 } 2725 BIO_free(s->bbio); 2726 s->bbio = NULL; 2727} 2728 2729void 2730SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2731{ 2732 ctx->internal->quiet_shutdown = mode; 2733} 2734 2735int 2736SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2737{ 2738 return (ctx->internal->quiet_shutdown); 2739} 2740 2741void 2742SSL_set_quiet_shutdown(SSL *s, int mode) 2743{ 2744 s->internal->quiet_shutdown = mode; 2745} 2746 2747int 2748SSL_get_quiet_shutdown(const SSL *s) 2749{ 2750 return (s->internal->quiet_shutdown); 2751} 2752 2753void 2754SSL_set_shutdown(SSL *s, int mode) 2755{ 2756 s->internal->shutdown = mode; 2757} 2758 2759int 2760SSL_get_shutdown(const SSL *s) 2761{ 2762 return (s->internal->shutdown); 2763} 2764 2765int 2766SSL_version(const SSL *s) 2767{ 2768 return (s->version); 2769} 2770 2771SSL_CTX * 2772SSL_get_SSL_CTX(const SSL *ssl) 2773{ 2774 return (ssl->ctx); 2775} 2776 2777SSL_CTX * 2778SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2779{ 2780 CERT *ocert = ssl->cert; 2781 2782 if (ssl->ctx == ctx) 2783 return (ssl->ctx); 2784 if (ctx == NULL) 2785 ctx = ssl->initial_ctx; 2786 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2787 if (ocert != NULL) { 2788 int i; 2789 /* Copy negotiated digests from original certificate. */ 2790 for (i = 0; i < SSL_PKEY_NUM; i++) 2791 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2792 ssl_cert_free(ocert); 2793 } 2794 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2795 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2796 ssl->ctx = ctx; 2797 return (ssl->ctx); 2798} 2799 2800int 2801SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2802{ 2803 return (X509_STORE_set_default_paths(ctx->cert_store)); 2804} 2805 2806int 2807SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2808 const char *CApath) 2809{ 2810 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2811} 2812 2813int 2814SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2815{ 2816 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2817} 2818 2819void 2820SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2821{ 2822 ssl->internal->info_callback = cb; 2823} 2824 2825void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2826{ 2827 return (ssl->internal->info_callback); 2828} 2829 2830int 2831SSL_state(const SSL *ssl) 2832{ 2833 return (S3I(ssl)->hs.state); 2834} 2835 2836void 2837SSL_set_state(SSL *ssl, int state) 2838{ 2839 S3I(ssl)->hs.state = state; 2840} 2841 2842void 2843SSL_set_verify_result(SSL *ssl, long arg) 2844{ 2845 ssl->verify_result = arg; 2846} 2847 2848long 2849SSL_get_verify_result(const SSL *ssl) 2850{ 2851 return (ssl->verify_result); 2852} 2853 2854int 2855SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2856 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2857{ 2858 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2859 new_func, dup_func, free_func)); 2860} 2861 2862int 2863SSL_set_ex_data(SSL *s, int idx, void *arg) 2864{ 2865 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2866} 2867 2868void * 2869SSL_get_ex_data(const SSL *s, int idx) 2870{ 2871 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2872} 2873 2874int 2875SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2876 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2877{ 2878 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2879 new_func, dup_func, free_func)); 2880} 2881 2882int 2883SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2884{ 2885 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2886} 2887 2888void * 2889SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2890{ 2891 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2892} 2893 2894int 2895ssl_ok(SSL *s) 2896{ 2897 return (1); 2898} 2899 2900X509_STORE * 2901SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2902{ 2903 return (ctx->cert_store); 2904} 2905 2906void 2907SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2908{ 2909 X509_STORE_free(ctx->cert_store); 2910 ctx->cert_store = store; 2911} 2912 2913X509 * 2914SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2915{ 2916 if (ctx->internal->cert == NULL) 2917 return NULL; 2918 2919 return ctx->internal->cert->key->x509; 2920} 2921 2922int 2923SSL_want(const SSL *s) 2924{ 2925 return (s->internal->rwstate); 2926} 2927 2928void 2929SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2930 int keylength)) 2931{ 2932 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2933} 2934 2935void 2936SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2937 int keylength)) 2938{ 2939 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2940} 2941 2942void 2943SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2944 int keylength)) 2945{ 2946 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2947} 2948 2949void 2950SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2951 int keylength)) 2952{ 2953 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2954} 2955 2956void 2957SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2958 int is_export, int keylength)) 2959{ 2960 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2961 (void (*)(void))ecdh); 2962} 2963 2964void 2965SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2966 int keylength)) 2967{ 2968 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2969} 2970 2971 2972void 2973SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2974 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2975{ 2976 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2977 (void (*)(void))cb); 2978} 2979 2980void 2981SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2982 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2983{ 2984 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2985} 2986 2987void 2988ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2989{ 2990 if (*hash) 2991 EVP_MD_CTX_destroy(*hash); 2992 *hash = NULL; 2993} 2994 2995void 2996SSL_set_debug(SSL *s, int debug) 2997{ 2998 s->internal->debug = debug; 2999} 3000 3001int 3002SSL_cache_hit(SSL *s) 3003{ 3004 return (s->internal->hit); 3005} 3006 3007int 3008SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3009{ 3010 return ssl_version_set_min(ctx->method, version, 3011 ctx->internal->max_version, &ctx->internal->min_version); 3012} 3013 3014int 3015SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3016{ 3017 return ssl_version_set_max(ctx->method, version, 3018 ctx->internal->min_version, &ctx->internal->max_version); 3019} 3020 3021int 3022SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3023{ 3024 return ssl_version_set_min(ssl->method, version, 3025 ssl->internal->max_version, &ssl->internal->min_version); 3026} 3027 3028int 3029SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3030{ 3031 return ssl_version_set_max(ssl->method, version, 3032 ssl->internal->min_version, &ssl->internal->max_version); 3033} 3034 3035static int 3036ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3037{ 3038 SSL_CIPHER const *a = a_; 3039 SSL_CIPHER const *b = b_; 3040 return ssl_cipher_id_cmp(a, b); 3041} 3042 3043SSL_CIPHER * 3044OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3045{ 3046 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3047 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3048} 3049