ssl_lib.c revision 1.173
1/* $OpenBSD: ssl_lib.c,v 1.173 2018/02/14 16:16:10 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 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 762{ 763 return (ctx->internal->default_verify_callback); 764} 765 766void 767SSL_set_verify(SSL *s, int mode, 768 int (*callback)(int ok, X509_STORE_CTX *ctx)) 769{ 770 s->verify_mode = mode; 771 if (callback != NULL) 772 s->internal->verify_callback = callback; 773} 774 775void 776SSL_set_verify_depth(SSL *s, int depth) 777{ 778 X509_VERIFY_PARAM_set_depth(s->param, depth); 779} 780 781void 782SSL_set_read_ahead(SSL *s, int yes) 783{ 784 s->internal->read_ahead = yes; 785} 786 787int 788SSL_get_read_ahead(const SSL *s) 789{ 790 return (s->internal->read_ahead); 791} 792 793int 794SSL_pending(const SSL *s) 795{ 796 /* 797 * SSL_pending cannot work properly if read-ahead is enabled 798 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 799 * and it is impossible to fix since SSL_pending cannot report 800 * errors that may be observed while scanning the new data. 801 * (Note that SSL_pending() is often used as a boolean value, 802 * so we'd better not return -1.) 803 */ 804 return (s->method->internal->ssl_pending(s)); 805} 806 807X509 * 808SSL_get_peer_certificate(const SSL *s) 809{ 810 X509 *r; 811 812 if ((s == NULL) || (s->session == NULL)) 813 r = NULL; 814 else 815 r = s->session->peer; 816 817 if (r == NULL) 818 return (r); 819 820 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 821 822 return (r); 823} 824 825STACK_OF(X509) * 826SSL_get_peer_cert_chain(const SSL *s) 827{ 828 STACK_OF(X509) *r; 829 830 if ((s == NULL) || (s->session == NULL) || 831 (SSI(s)->sess_cert == NULL)) 832 r = NULL; 833 else 834 r = SSI(s)->sess_cert->cert_chain; 835 836 /* 837 * If we are a client, cert_chain includes the peer's own 838 * certificate; 839 * if we are a server, it does not. 840 */ 841 return (r); 842} 843 844/* 845 * Now in theory, since the calling process own 't' it should be safe to 846 * modify. We need to be able to read f without being hassled 847 */ 848void 849SSL_copy_session_id(SSL *t, const SSL *f) 850{ 851 CERT *tmp; 852 853 /* Do we need to to SSL locking? */ 854 SSL_set_session(t, SSL_get_session(f)); 855 856 /* 857 * What if we are setup as SSLv2 but want to talk SSLv3 or 858 * vice-versa. 859 */ 860 if (t->method != f->method) { 861 t->method->internal->ssl_free(t); /* cleanup current */ 862 t->method = f->method; /* change method */ 863 t->method->internal->ssl_new(t); /* setup new */ 864 } 865 866 tmp = t->cert; 867 if (f->cert != NULL) { 868 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 869 t->cert = f->cert; 870 } else 871 t->cert = NULL; 872 ssl_cert_free(tmp); 873 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 874} 875 876/* Fix this so it checks all the valid key/cert options */ 877int 878SSL_CTX_check_private_key(const SSL_CTX *ctx) 879{ 880 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 881 (ctx->internal->cert->key->x509 == NULL)) { 882 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 883 return (0); 884 } 885 if (ctx->internal->cert->key->privatekey == NULL) { 886 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 887 return (0); 888 } 889 return (X509_check_private_key(ctx->internal->cert->key->x509, 890 ctx->internal->cert->key->privatekey)); 891} 892 893/* Fix this function so that it takes an optional type parameter */ 894int 895SSL_check_private_key(const SSL *ssl) 896{ 897 if (ssl == NULL) { 898 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 899 return (0); 900 } 901 if (ssl->cert == NULL) { 902 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 903 return (0); 904 } 905 if (ssl->cert->key->x509 == NULL) { 906 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 907 return (0); 908 } 909 if (ssl->cert->key->privatekey == NULL) { 910 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 911 return (0); 912 } 913 return (X509_check_private_key(ssl->cert->key->x509, 914 ssl->cert->key->privatekey)); 915} 916 917int 918SSL_accept(SSL *s) 919{ 920 if (s->internal->handshake_func == NULL) 921 SSL_set_accept_state(s); /* Not properly initialized yet */ 922 923 return (s->method->internal->ssl_accept(s)); 924} 925 926int 927SSL_connect(SSL *s) 928{ 929 if (s->internal->handshake_func == NULL) 930 SSL_set_connect_state(s); /* Not properly initialized yet */ 931 932 return (s->method->internal->ssl_connect(s)); 933} 934 935long 936SSL_get_default_timeout(const SSL *s) 937{ 938 return (s->method->internal->get_timeout()); 939} 940 941int 942SSL_read(SSL *s, void *buf, int num) 943{ 944 if (s->internal->handshake_func == NULL) { 945 SSLerror(s, SSL_R_UNINITIALIZED); 946 return (-1); 947 } 948 949 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 950 s->internal->rwstate = SSL_NOTHING; 951 return (0); 952 } 953 return (s->method->internal->ssl_read(s, buf, num)); 954} 955 956int 957SSL_peek(SSL *s, void *buf, int num) 958{ 959 if (s->internal->handshake_func == NULL) { 960 SSLerror(s, SSL_R_UNINITIALIZED); 961 return (-1); 962 } 963 964 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 965 return (0); 966 } 967 return (s->method->internal->ssl_peek(s, buf, num)); 968} 969 970int 971SSL_write(SSL *s, const void *buf, int num) 972{ 973 if (s->internal->handshake_func == NULL) { 974 SSLerror(s, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 979 s->internal->rwstate = SSL_NOTHING; 980 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 981 return (-1); 982 } 983 return (s->method->internal->ssl_write(s, buf, num)); 984} 985 986int 987SSL_shutdown(SSL *s) 988{ 989 /* 990 * Note that this function behaves differently from what one might 991 * expect. Return values are 0 for no success (yet), 992 * 1 for success; but calling it once is usually not enough, 993 * even if blocking I/O is used (see ssl3_shutdown). 994 */ 995 996 if (s->internal->handshake_func == NULL) { 997 SSLerror(s, SSL_R_UNINITIALIZED); 998 return (-1); 999 } 1000 1001 if ((s != NULL) && !SSL_in_init(s)) 1002 return (s->method->internal->ssl_shutdown(s)); 1003 else 1004 return (1); 1005} 1006 1007int 1008SSL_renegotiate(SSL *s) 1009{ 1010 if (s->internal->renegotiate == 0) 1011 s->internal->renegotiate = 1; 1012 1013 s->internal->new_session = 1; 1014 1015 return (s->method->internal->ssl_renegotiate(s)); 1016} 1017 1018int 1019SSL_renegotiate_abbreviated(SSL *s) 1020{ 1021 if (s->internal->renegotiate == 0) 1022 s->internal->renegotiate = 1; 1023 1024 s->internal->new_session = 0; 1025 1026 return (s->method->internal->ssl_renegotiate(s)); 1027} 1028 1029int 1030SSL_renegotiate_pending(SSL *s) 1031{ 1032 /* 1033 * Becomes true when negotiation is requested; 1034 * false again once a handshake has finished. 1035 */ 1036 return (s->internal->renegotiate != 0); 1037} 1038 1039long 1040SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1041{ 1042 long l; 1043 1044 switch (cmd) { 1045 case SSL_CTRL_GET_READ_AHEAD: 1046 return (s->internal->read_ahead); 1047 case SSL_CTRL_SET_READ_AHEAD: 1048 l = s->internal->read_ahead; 1049 s->internal->read_ahead = larg; 1050 return (l); 1051 1052 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1053 s->internal->msg_callback_arg = parg; 1054 return (1); 1055 1056 case SSL_CTRL_OPTIONS: 1057 return (s->internal->options|=larg); 1058 case SSL_CTRL_CLEAR_OPTIONS: 1059 return (s->internal->options&=~larg); 1060 case SSL_CTRL_MODE: 1061 return (s->internal->mode|=larg); 1062 case SSL_CTRL_CLEAR_MODE: 1063 return (s->internal->mode &=~larg); 1064 case SSL_CTRL_GET_MAX_CERT_LIST: 1065 return (s->internal->max_cert_list); 1066 case SSL_CTRL_SET_MAX_CERT_LIST: 1067 l = s->internal->max_cert_list; 1068 s->internal->max_cert_list = larg; 1069 return (l); 1070 case SSL_CTRL_SET_MTU: 1071#ifndef OPENSSL_NO_DTLS1 1072 if (larg < (long)dtls1_min_mtu()) 1073 return (0); 1074#endif 1075 if (SSL_IS_DTLS(s)) { 1076 D1I(s)->mtu = larg; 1077 return (larg); 1078 } 1079 return (0); 1080 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1081 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1082 return (0); 1083 s->max_send_fragment = larg; 1084 return (1); 1085 case SSL_CTRL_GET_RI_SUPPORT: 1086 if (s->s3) 1087 return (S3I(s)->send_connection_binding); 1088 else return (0); 1089 default: 1090 if (SSL_IS_DTLS(s)) 1091 return dtls1_ctrl(s, cmd, larg, parg); 1092 return ssl3_ctrl(s, cmd, larg, parg); 1093 } 1094} 1095 1096long 1097SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1098{ 1099 switch (cmd) { 1100 case SSL_CTRL_SET_MSG_CALLBACK: 1101 s->internal->msg_callback = (void (*)(int write_p, int version, 1102 int content_type, const void *buf, size_t len, 1103 SSL *ssl, void *arg))(fp); 1104 return (1); 1105 1106 default: 1107 return (ssl3_callback_ctrl(s, cmd, fp)); 1108 } 1109} 1110 1111struct lhash_st_SSL_SESSION * 1112SSL_CTX_sessions(SSL_CTX *ctx) 1113{ 1114 return (ctx->internal->sessions); 1115} 1116 1117long 1118SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1119{ 1120 long l; 1121 1122 switch (cmd) { 1123 case SSL_CTRL_GET_READ_AHEAD: 1124 return (ctx->internal->read_ahead); 1125 case SSL_CTRL_SET_READ_AHEAD: 1126 l = ctx->internal->read_ahead; 1127 ctx->internal->read_ahead = larg; 1128 return (l); 1129 1130 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1131 ctx->internal->msg_callback_arg = parg; 1132 return (1); 1133 1134 case SSL_CTRL_GET_MAX_CERT_LIST: 1135 return (ctx->internal->max_cert_list); 1136 case SSL_CTRL_SET_MAX_CERT_LIST: 1137 l = ctx->internal->max_cert_list; 1138 ctx->internal->max_cert_list = larg; 1139 return (l); 1140 1141 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1142 l = ctx->internal->session_cache_size; 1143 ctx->internal->session_cache_size = larg; 1144 return (l); 1145 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1146 return (ctx->internal->session_cache_size); 1147 case SSL_CTRL_SET_SESS_CACHE_MODE: 1148 l = ctx->internal->session_cache_mode; 1149 ctx->internal->session_cache_mode = larg; 1150 return (l); 1151 case SSL_CTRL_GET_SESS_CACHE_MODE: 1152 return (ctx->internal->session_cache_mode); 1153 1154 case SSL_CTRL_SESS_NUMBER: 1155 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1156 case SSL_CTRL_SESS_CONNECT: 1157 return (ctx->internal->stats.sess_connect); 1158 case SSL_CTRL_SESS_CONNECT_GOOD: 1159 return (ctx->internal->stats.sess_connect_good); 1160 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1161 return (ctx->internal->stats.sess_connect_renegotiate); 1162 case SSL_CTRL_SESS_ACCEPT: 1163 return (ctx->internal->stats.sess_accept); 1164 case SSL_CTRL_SESS_ACCEPT_GOOD: 1165 return (ctx->internal->stats.sess_accept_good); 1166 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1167 return (ctx->internal->stats.sess_accept_renegotiate); 1168 case SSL_CTRL_SESS_HIT: 1169 return (ctx->internal->stats.sess_hit); 1170 case SSL_CTRL_SESS_CB_HIT: 1171 return (ctx->internal->stats.sess_cb_hit); 1172 case SSL_CTRL_SESS_MISSES: 1173 return (ctx->internal->stats.sess_miss); 1174 case SSL_CTRL_SESS_TIMEOUTS: 1175 return (ctx->internal->stats.sess_timeout); 1176 case SSL_CTRL_SESS_CACHE_FULL: 1177 return (ctx->internal->stats.sess_cache_full); 1178 case SSL_CTRL_OPTIONS: 1179 return (ctx->internal->options|=larg); 1180 case SSL_CTRL_CLEAR_OPTIONS: 1181 return (ctx->internal->options&=~larg); 1182 case SSL_CTRL_MODE: 1183 return (ctx->internal->mode|=larg); 1184 case SSL_CTRL_CLEAR_MODE: 1185 return (ctx->internal->mode&=~larg); 1186 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1187 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1188 return (0); 1189 ctx->internal->max_send_fragment = larg; 1190 return (1); 1191 default: 1192 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1193 } 1194} 1195 1196long 1197SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1198{ 1199 switch (cmd) { 1200 case SSL_CTRL_SET_MSG_CALLBACK: 1201 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1202 int content_type, const void *buf, size_t len, SSL *ssl, 1203 void *arg))(fp); 1204 return (1); 1205 1206 default: 1207 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1208 } 1209} 1210 1211int 1212ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1213{ 1214 long l; 1215 1216 l = a->id - b->id; 1217 if (l == 0L) 1218 return (0); 1219 else 1220 return ((l > 0) ? 1:-1); 1221} 1222 1223int 1224ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1225 const SSL_CIPHER * const *bp) 1226{ 1227 long l; 1228 1229 l = (*ap)->id - (*bp)->id; 1230 if (l == 0L) 1231 return (0); 1232 else 1233 return ((l > 0) ? 1:-1); 1234} 1235 1236/* 1237 * Return a STACK of the ciphers available for the SSL and in order of 1238 * preference. 1239 */ 1240STACK_OF(SSL_CIPHER) * 1241SSL_get_ciphers(const SSL *s) 1242{ 1243 if (s != NULL) { 1244 if (s->cipher_list != NULL) { 1245 return (s->cipher_list); 1246 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1247 return (s->ctx->cipher_list); 1248 } 1249 } 1250 return (NULL); 1251} 1252 1253/* 1254 * Return a STACK of the ciphers available for the SSL and in order of 1255 * algorithm id. 1256 */ 1257STACK_OF(SSL_CIPHER) * 1258ssl_get_ciphers_by_id(SSL *s) 1259{ 1260 if (s != NULL) { 1261 if (s->internal->cipher_list_by_id != NULL) { 1262 return (s->internal->cipher_list_by_id); 1263 } else if ((s->ctx != NULL) && 1264 (s->ctx->internal->cipher_list_by_id != NULL)) { 1265 return (s->ctx->internal->cipher_list_by_id); 1266 } 1267 } 1268 return (NULL); 1269} 1270 1271/* See if we have any ECC cipher suites. */ 1272int 1273ssl_has_ecc_ciphers(SSL *s) 1274{ 1275 STACK_OF(SSL_CIPHER) *ciphers; 1276 unsigned long alg_k, alg_a; 1277 SSL_CIPHER *cipher; 1278 int i; 1279 1280 if (s->version == DTLS1_VERSION) 1281 return 0; 1282 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1283 return 0; 1284 1285 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1286 cipher = sk_SSL_CIPHER_value(ciphers, i); 1287 1288 alg_k = cipher->algorithm_mkey; 1289 alg_a = cipher->algorithm_auth; 1290 1291 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1292 return 1; 1293 } 1294 1295 return 0; 1296} 1297 1298/* The old interface to get the same thing as SSL_get_ciphers(). */ 1299const char * 1300SSL_get_cipher_list(const SSL *s, int n) 1301{ 1302 SSL_CIPHER *c; 1303 STACK_OF(SSL_CIPHER) *sk; 1304 1305 if (s == NULL) 1306 return (NULL); 1307 sk = SSL_get_ciphers(s); 1308 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1309 return (NULL); 1310 c = sk_SSL_CIPHER_value(sk, n); 1311 if (c == NULL) 1312 return (NULL); 1313 return (c->name); 1314} 1315 1316/* Specify the ciphers to be used by default by the SSL_CTX. */ 1317int 1318SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1319{ 1320 STACK_OF(SSL_CIPHER) *sk; 1321 1322 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1323 &ctx->internal->cipher_list_by_id, str); 1324 /* 1325 * ssl_create_cipher_list may return an empty stack if it 1326 * was unable to find a cipher matching the given rule string 1327 * (for example if the rule string specifies a cipher which 1328 * has been disabled). This is not an error as far as 1329 * ssl_create_cipher_list is concerned, and hence 1330 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1331 * updated. 1332 */ 1333 if (sk == NULL) 1334 return (0); 1335 else if (sk_SSL_CIPHER_num(sk) == 0) { 1336 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1337 return (0); 1338 } 1339 return (1); 1340} 1341 1342/* Specify the ciphers to be used by the SSL. */ 1343int 1344SSL_set_cipher_list(SSL *s, const char *str) 1345{ 1346 STACK_OF(SSL_CIPHER) *sk; 1347 1348 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1349 &s->internal->cipher_list_by_id, str); 1350 /* see comment in SSL_CTX_set_cipher_list */ 1351 if (sk == NULL) 1352 return (0); 1353 else if (sk_SSL_CIPHER_num(sk) == 0) { 1354 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1355 return (0); 1356 } 1357 return (1); 1358} 1359 1360/* works well for SSLv2, not so good for SSLv3 */ 1361char * 1362SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1363{ 1364 char *end; 1365 STACK_OF(SSL_CIPHER) *sk; 1366 SSL_CIPHER *c; 1367 size_t curlen = 0; 1368 int i; 1369 1370 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1371 return (NULL); 1372 1373 sk = s->session->ciphers; 1374 if (sk_SSL_CIPHER_num(sk) == 0) 1375 return (NULL); 1376 1377 buf[0] = '\0'; 1378 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1379 c = sk_SSL_CIPHER_value(sk, i); 1380 end = buf + curlen; 1381 if (strlcat(buf, c->name, len) >= len || 1382 (curlen = strlcat(buf, ":", len)) >= len) { 1383 /* remove truncated cipher from list */ 1384 *end = '\0'; 1385 break; 1386 } 1387 } 1388 /* remove trailing colon */ 1389 if ((end = strrchr(buf, ':')) != NULL) 1390 *end = '\0'; 1391 return (buf); 1392} 1393 1394int 1395ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1396{ 1397 SSL_CIPHER *cipher; 1398 int num_ciphers = 0; 1399 int i; 1400 1401 if (ciphers == NULL) 1402 return 0; 1403 1404 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1405 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1406 return 0; 1407 1408 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1409 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1410 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1411 continue; 1412 1413 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1414 return 0; 1415 1416 num_ciphers++; 1417 } 1418 1419 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1420 if (num_ciphers > 0 && !s->internal->renegotiate) { 1421 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1422 return 0; 1423 } 1424 1425 if (!CBB_flush(cbb)) 1426 return 0; 1427 1428 return 1; 1429} 1430 1431STACK_OF(SSL_CIPHER) * 1432ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1433{ 1434 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1435 const SSL_CIPHER *cipher; 1436 uint16_t cipher_value, max_version; 1437 unsigned long cipher_id; 1438 1439 if (s->s3 != NULL) 1440 S3I(s)->send_connection_binding = 0; 1441 1442 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1443 SSLerror(s, ERR_R_MALLOC_FAILURE); 1444 goto err; 1445 } 1446 1447 while (CBS_len(cbs) > 0) { 1448 if (!CBS_get_u16(cbs, &cipher_value)) { 1449 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1450 goto err; 1451 } 1452 1453 cipher_id = SSL3_CK_ID | cipher_value; 1454 1455 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1456 /* 1457 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1458 * renegotiating. 1459 */ 1460 if (s->internal->renegotiate) { 1461 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1462 ssl3_send_alert(s, SSL3_AL_FATAL, 1463 SSL_AD_HANDSHAKE_FAILURE); 1464 1465 goto err; 1466 } 1467 S3I(s)->send_connection_binding = 1; 1468 continue; 1469 } 1470 1471 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1472 /* 1473 * TLS_FALLBACK_SCSV indicates that the client 1474 * previously tried a higher protocol version. 1475 * Fail if the current version is an unexpected 1476 * downgrade. 1477 */ 1478 max_version = ssl_max_server_version(s); 1479 if (max_version == 0 || s->version < max_version) { 1480 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1481 if (s->s3 != NULL) 1482 ssl3_send_alert(s, SSL3_AL_FATAL, 1483 SSL_AD_INAPPROPRIATE_FALLBACK); 1484 goto err; 1485 } 1486 continue; 1487 } 1488 1489 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1490 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1491 SSLerror(s, ERR_R_MALLOC_FAILURE); 1492 goto err; 1493 } 1494 } 1495 } 1496 1497 return (ciphers); 1498 1499err: 1500 sk_SSL_CIPHER_free(ciphers); 1501 1502 return (NULL); 1503} 1504 1505 1506/* 1507 * Return a servername extension value if provided in Client Hello, or NULL. 1508 * So far, only host_name types are defined (RFC 3546). 1509 */ 1510const char * 1511SSL_get_servername(const SSL *s, const int type) 1512{ 1513 if (type != TLSEXT_NAMETYPE_host_name) 1514 return (NULL); 1515 1516 return (s->session && !s->tlsext_hostname ? 1517 s->session->tlsext_hostname : 1518 s->tlsext_hostname); 1519} 1520 1521int 1522SSL_get_servername_type(const SSL *s) 1523{ 1524 if (s->session && 1525 (!s->tlsext_hostname ? 1526 s->session->tlsext_hostname : s->tlsext_hostname)) 1527 return (TLSEXT_NAMETYPE_host_name); 1528 return (-1); 1529} 1530 1531/* 1532 * SSL_select_next_proto implements standard protocol selection. It is 1533 * expected that this function is called from the callback set by 1534 * SSL_CTX_set_alpn_select_cb. 1535 * 1536 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1537 * strings. The length byte itself is not included in the length. A byte 1538 * string of length 0 is invalid. No byte string may be truncated. 1539 * 1540 * It returns either: 1541 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1542 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1543 */ 1544int 1545SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1546 const unsigned char *server, unsigned int server_len, 1547 const unsigned char *client, unsigned int client_len) 1548{ 1549 unsigned int i, j; 1550 const unsigned char *result; 1551 int status = OPENSSL_NPN_UNSUPPORTED; 1552 1553 /* 1554 * For each protocol in server preference order, 1555 * see if we support it. 1556 */ 1557 for (i = 0; i < server_len; ) { 1558 for (j = 0; j < client_len; ) { 1559 if (server[i] == client[j] && 1560 memcmp(&server[i + 1], 1561 &client[j + 1], server[i]) == 0) { 1562 /* We found a match */ 1563 result = &server[i]; 1564 status = OPENSSL_NPN_NEGOTIATED; 1565 goto found; 1566 } 1567 j += client[j]; 1568 j++; 1569 } 1570 i += server[i]; 1571 i++; 1572 } 1573 1574 /* There's no overlap between our protocols and the server's list. */ 1575 result = client; 1576 status = OPENSSL_NPN_NO_OVERLAP; 1577 1578found: 1579 *out = (unsigned char *) result + 1; 1580 *outlen = result[0]; 1581 return (status); 1582} 1583 1584/* SSL_get0_next_proto_negotiated is deprecated. */ 1585void 1586SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1587 unsigned *len) 1588{ 1589 *data = NULL; 1590 *len = 0; 1591} 1592 1593/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1594void 1595SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1596 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1597{ 1598} 1599 1600/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1601void 1602SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1603 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1604 unsigned int inlen, void *arg), void *arg) 1605{ 1606} 1607 1608/* 1609 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1610 * protocols, which must be in wire-format (i.e. a series of non-empty, 1611 * 8-bit length-prefixed strings). Returns 0 on success. 1612 */ 1613int 1614SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1615 unsigned int protos_len) 1616{ 1617 int failed = 1; 1618 1619 if (protos == NULL || protos_len == 0) 1620 goto err; 1621 1622 free(ctx->internal->alpn_client_proto_list); 1623 ctx->internal->alpn_client_proto_list = NULL; 1624 ctx->internal->alpn_client_proto_list_len = 0; 1625 1626 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1627 == NULL) 1628 goto err; 1629 ctx->internal->alpn_client_proto_list_len = protos_len; 1630 1631 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1632 1633 failed = 0; 1634 1635 err: 1636 /* NOTE: Return values are the reverse of what you expect. */ 1637 return (failed); 1638} 1639 1640/* 1641 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1642 * protocols, which must be in wire-format (i.e. a series of non-empty, 1643 * 8-bit length-prefixed strings). Returns 0 on success. 1644 */ 1645int 1646SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1647 unsigned int protos_len) 1648{ 1649 int failed = 1; 1650 1651 if (protos == NULL || protos_len == 0) 1652 goto err; 1653 1654 free(ssl->internal->alpn_client_proto_list); 1655 ssl->internal->alpn_client_proto_list = NULL; 1656 ssl->internal->alpn_client_proto_list_len = 0; 1657 1658 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1659 == NULL) 1660 goto err; 1661 ssl->internal->alpn_client_proto_list_len = protos_len; 1662 1663 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1664 1665 failed = 0; 1666 1667 err: 1668 /* NOTE: Return values are the reverse of what you expect. */ 1669 return (failed); 1670} 1671 1672/* 1673 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1674 * ClientHello processing in order to select an ALPN protocol from the 1675 * client's list of offered protocols. 1676 */ 1677void 1678SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1679 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1680 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1681{ 1682 ctx->internal->alpn_select_cb = cb; 1683 ctx->internal->alpn_select_cb_arg = arg; 1684} 1685 1686/* 1687 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1688 * it sets data to point to len bytes of protocol name (not including the 1689 * leading length-prefix byte). If the server didn't respond with* a negotiated 1690 * protocol then len will be zero. 1691 */ 1692void 1693SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1694 unsigned *len) 1695{ 1696 *data = NULL; 1697 *len = 0; 1698 1699 if (ssl->s3 != NULL) { 1700 *data = ssl->s3->internal->alpn_selected; 1701 *len = ssl->s3->internal->alpn_selected_len; 1702 } 1703} 1704 1705int 1706SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1707 const char *label, size_t llen, const unsigned char *p, size_t plen, 1708 int use_context) 1709{ 1710 return (tls1_export_keying_material(s, out, olen, 1711 label, llen, p, plen, use_context)); 1712} 1713 1714static unsigned long 1715ssl_session_hash(const SSL_SESSION *a) 1716{ 1717 unsigned long l; 1718 1719 l = (unsigned long) 1720 ((unsigned int) a->session_id[0] )| 1721 ((unsigned int) a->session_id[1]<< 8L)| 1722 ((unsigned long)a->session_id[2]<<16L)| 1723 ((unsigned long)a->session_id[3]<<24L); 1724 return (l); 1725} 1726 1727/* 1728 * NB: If this function (or indeed the hash function which uses a sort of 1729 * coarser function than this one) is changed, ensure 1730 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1731 * able to construct an SSL_SESSION that will collide with any existing session 1732 * with a matching session ID. 1733 */ 1734static int 1735ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1736{ 1737 if (a->ssl_version != b->ssl_version) 1738 return (1); 1739 if (a->session_id_length != b->session_id_length) 1740 return (1); 1741 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1742 return (1); 1743 return (0); 1744} 1745 1746/* 1747 * These wrapper functions should remain rather than redeclaring 1748 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1749 * variable. The reason is that the functions aren't static, they're exposed via 1750 * ssl.h. 1751 */ 1752static unsigned long 1753ssl_session_LHASH_HASH(const void *arg) 1754{ 1755 const SSL_SESSION *a = arg; 1756 1757 return ssl_session_hash(a); 1758} 1759 1760static int 1761ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1762{ 1763 const SSL_SESSION *a = arg1; 1764 const SSL_SESSION *b = arg2; 1765 1766 return ssl_session_cmp(a, b); 1767} 1768 1769SSL_CTX * 1770SSL_CTX_new(const SSL_METHOD *meth) 1771{ 1772 SSL_CTX *ret; 1773 1774 if (meth == NULL) { 1775 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1776 return (NULL); 1777 } 1778 1779 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1780 SSLerrorx(ERR_R_MALLOC_FAILURE); 1781 return (NULL); 1782 } 1783 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1784 free(ret); 1785 SSLerrorx(ERR_R_MALLOC_FAILURE); 1786 return (NULL); 1787 } 1788 1789 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1790 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1791 goto err; 1792 } 1793 1794 ret->method = meth; 1795 ret->internal->min_version = meth->internal->min_version; 1796 ret->internal->max_version = meth->internal->max_version; 1797 1798 ret->cert_store = NULL; 1799 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1800 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1801 ret->internal->session_cache_head = NULL; 1802 ret->internal->session_cache_tail = NULL; 1803 1804 /* We take the system default */ 1805 ret->session_timeout = meth->internal->get_timeout(); 1806 1807 ret->internal->new_session_cb = 0; 1808 ret->internal->remove_session_cb = 0; 1809 ret->internal->get_session_cb = 0; 1810 ret->internal->generate_session_id = 0; 1811 1812 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1813 1814 ret->references = 1; 1815 ret->internal->quiet_shutdown = 0; 1816 1817 ret->internal->info_callback = NULL; 1818 1819 ret->internal->app_verify_callback = 0; 1820 ret->internal->app_verify_arg = NULL; 1821 1822 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1823 ret->internal->read_ahead = 0; 1824 ret->internal->msg_callback = 0; 1825 ret->internal->msg_callback_arg = NULL; 1826 ret->verify_mode = SSL_VERIFY_NONE; 1827 ret->sid_ctx_length = 0; 1828 ret->internal->default_verify_callback = NULL; 1829 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1830 goto err; 1831 1832 ret->default_passwd_callback = 0; 1833 ret->default_passwd_callback_userdata = NULL; 1834 ret->internal->client_cert_cb = 0; 1835 ret->internal->app_gen_cookie_cb = 0; 1836 ret->internal->app_verify_cookie_cb = 0; 1837 1838 ret->internal->sessions = lh_SSL_SESSION_new(); 1839 if (ret->internal->sessions == NULL) 1840 goto err; 1841 ret->cert_store = X509_STORE_new(); 1842 if (ret->cert_store == NULL) 1843 goto err; 1844 1845 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1846 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1847 if (ret->cipher_list == NULL || 1848 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1849 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1850 goto err2; 1851 } 1852 1853 ret->param = X509_VERIFY_PARAM_new(); 1854 if (!ret->param) 1855 goto err; 1856 1857 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1858 goto err; 1859 1860 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1861 1862 ret->extra_certs = NULL; 1863 1864 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1865 1866 ret->internal->tlsext_servername_callback = 0; 1867 ret->internal->tlsext_servername_arg = NULL; 1868 1869 /* Setup RFC4507 ticket keys */ 1870 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1871 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1872 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1873 1874 ret->internal->tlsext_status_cb = 0; 1875 ret->internal->tlsext_status_arg = NULL; 1876 1877#ifndef OPENSSL_NO_ENGINE 1878 ret->internal->client_cert_engine = NULL; 1879#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1880#define eng_strx(x) #x 1881#define eng_str(x) eng_strx(x) 1882 /* Use specific client engine automatically... ignore errors */ 1883 { 1884 ENGINE *eng; 1885 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1886 if (!eng) { 1887 ERR_clear_error(); 1888 ENGINE_load_builtin_engines(); 1889 eng = ENGINE_by_id(eng_str( 1890 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1891 } 1892 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1893 ERR_clear_error(); 1894 } 1895#endif 1896#endif 1897 /* 1898 * Default is to connect to non-RI servers. When RI is more widely 1899 * deployed might change this. 1900 */ 1901 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1902 1903 return (ret); 1904err: 1905 SSLerrorx(ERR_R_MALLOC_FAILURE); 1906err2: 1907 SSL_CTX_free(ret); 1908 return (NULL); 1909} 1910 1911void 1912SSL_CTX_free(SSL_CTX *ctx) 1913{ 1914 int i; 1915 1916 if (ctx == NULL) 1917 return; 1918 1919 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1920 if (i > 0) 1921 return; 1922 1923 X509_VERIFY_PARAM_free(ctx->param); 1924 1925 /* 1926 * Free internal session cache. However: the remove_cb() may reference 1927 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1928 * after the sessions were flushed. 1929 * As the ex_data handling routines might also touch the session cache, 1930 * the most secure solution seems to be: empty (flush) the cache, then 1931 * free ex_data, then finally free the cache. 1932 * (See ticket [openssl.org #212].) 1933 */ 1934 if (ctx->internal->sessions != NULL) 1935 SSL_CTX_flush_sessions(ctx, 0); 1936 1937 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1938 1939 lh_SSL_SESSION_free(ctx->internal->sessions); 1940 1941 X509_STORE_free(ctx->cert_store); 1942 sk_SSL_CIPHER_free(ctx->cipher_list); 1943 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1944 ssl_cert_free(ctx->internal->cert); 1945 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1946 sk_X509_pop_free(ctx->extra_certs, X509_free); 1947 1948#ifndef OPENSSL_NO_SRTP 1949 if (ctx->internal->srtp_profiles) 1950 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1951#endif 1952 1953#ifndef OPENSSL_NO_ENGINE 1954 if (ctx->internal->client_cert_engine) 1955 ENGINE_finish(ctx->internal->client_cert_engine); 1956#endif 1957 1958 free(ctx->internal->tlsext_ecpointformatlist); 1959 free(ctx->internal->tlsext_supportedgroups); 1960 1961 free(ctx->internal->alpn_client_proto_list); 1962 1963 free(ctx->internal); 1964 free(ctx); 1965} 1966 1967void 1968SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1969{ 1970 ctx->default_passwd_callback = cb; 1971} 1972 1973void 1974SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1975{ 1976 ctx->default_passwd_callback_userdata = u; 1977} 1978 1979void 1980SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1981 void *), void *arg) 1982{ 1983 ctx->internal->app_verify_callback = cb; 1984 ctx->internal->app_verify_arg = arg; 1985} 1986 1987void 1988SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1989{ 1990 ctx->verify_mode = mode; 1991 ctx->internal->default_verify_callback = cb; 1992} 1993 1994void 1995SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1996{ 1997 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1998} 1999 2000void 2001ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2002{ 2003 int rsa_enc, rsa_sign, dh_tmp; 2004 int have_ecc_cert; 2005 unsigned long mask_k, mask_a; 2006 X509 *x = NULL; 2007 CERT_PKEY *cpk; 2008 2009 if (c == NULL) 2010 return; 2011 2012 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2013 c->dh_tmp_auto != 0); 2014 2015 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2016 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2017 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2018 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2019 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2020 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2021 2022 mask_k = 0; 2023 mask_a = 0; 2024 2025 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2026 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2027 mask_k |= SSL_kGOST; 2028 mask_a |= SSL_aGOST01; 2029 } 2030 2031 if (rsa_enc) 2032 mask_k |= SSL_kRSA; 2033 2034 if (dh_tmp) 2035 mask_k |= SSL_kDHE; 2036 2037 if (rsa_enc || rsa_sign) 2038 mask_a |= SSL_aRSA; 2039 2040 mask_a |= SSL_aNULL; 2041 2042 /* 2043 * An ECC certificate may be usable for ECDH and/or 2044 * ECDSA cipher suites depending on the key usage extension. 2045 */ 2046 if (have_ecc_cert) { 2047 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2048 2049 /* This call populates extension flags (ex_flags). */ 2050 X509_check_purpose(x, -1, 0); 2051 2052 /* Key usage, if present, must allow signing. */ 2053 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2054 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2055 mask_a |= SSL_aECDSA; 2056 } 2057 2058 mask_k |= SSL_kECDHE; 2059 2060 c->mask_k = mask_k; 2061 c->mask_a = mask_a; 2062 c->valid = 1; 2063} 2064 2065/* See if this handshake is using an ECC cipher suite. */ 2066int 2067ssl_using_ecc_cipher(SSL *s) 2068{ 2069 unsigned long alg_a, alg_k; 2070 2071 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2072 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2073 2074 return SSI(s)->tlsext_ecpointformatlist != NULL && 2075 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2076 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2077} 2078 2079int 2080ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2081{ 2082 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2083 unsigned long alg_a; 2084 2085 alg_a = cs->algorithm_auth; 2086 2087 if (alg_a & SSL_aECDSA) { 2088 /* This call populates extension flags (ex_flags). */ 2089 X509_check_purpose(x, -1, 0); 2090 2091 /* Key usage, if present, must allow signing. */ 2092 if ((x->ex_flags & EXFLAG_KUSAGE) && 2093 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2094 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2095 return (0); 2096 } 2097 } 2098 2099 return (1); 2100} 2101 2102CERT_PKEY * 2103ssl_get_server_send_pkey(const SSL *s) 2104{ 2105 unsigned long alg_a; 2106 CERT *c; 2107 int i; 2108 2109 c = s->cert; 2110 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2111 2112 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2113 2114 if (alg_a & SSL_aECDSA) { 2115 i = SSL_PKEY_ECC; 2116 } else if (alg_a & SSL_aRSA) { 2117 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2118 i = SSL_PKEY_RSA_SIGN; 2119 else 2120 i = SSL_PKEY_RSA_ENC; 2121 } else if (alg_a & SSL_aGOST01) { 2122 i = SSL_PKEY_GOST01; 2123 } else { /* if (alg_a & SSL_aNULL) */ 2124 SSLerror(s, ERR_R_INTERNAL_ERROR); 2125 return (NULL); 2126 } 2127 2128 return (c->pkeys + i); 2129} 2130 2131X509 * 2132ssl_get_server_send_cert(const SSL *s) 2133{ 2134 CERT_PKEY *cpk; 2135 2136 cpk = ssl_get_server_send_pkey(s); 2137 if (!cpk) 2138 return (NULL); 2139 return (cpk->x509); 2140} 2141 2142EVP_PKEY * 2143ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2144{ 2145 unsigned long alg_a; 2146 CERT *c; 2147 int idx = -1; 2148 2149 alg_a = cipher->algorithm_auth; 2150 c = s->cert; 2151 2152 if (alg_a & SSL_aRSA) { 2153 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2154 idx = SSL_PKEY_RSA_SIGN; 2155 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2156 idx = SSL_PKEY_RSA_ENC; 2157 } else if ((alg_a & SSL_aECDSA) && 2158 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2159 idx = SSL_PKEY_ECC; 2160 if (idx == -1) { 2161 SSLerror(s, ERR_R_INTERNAL_ERROR); 2162 return (NULL); 2163 } 2164 if (pmd) 2165 *pmd = c->pkeys[idx].digest; 2166 return (c->pkeys[idx].privatekey); 2167} 2168 2169DH * 2170ssl_get_auto_dh(SSL *s) 2171{ 2172 CERT_PKEY *cpk; 2173 int keylen; 2174 DH *dhp; 2175 2176 if (s->cert->dh_tmp_auto == 2) { 2177 keylen = 1024; 2178 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2179 keylen = 1024; 2180 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2181 keylen = 3072; 2182 } else { 2183 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2184 return (NULL); 2185 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2186 return (NULL); 2187 keylen = EVP_PKEY_bits(cpk->privatekey); 2188 } 2189 2190 if ((dhp = DH_new()) == NULL) 2191 return (NULL); 2192 2193 dhp->g = BN_new(); 2194 if (dhp->g != NULL) 2195 BN_set_word(dhp->g, 2); 2196 2197 if (keylen >= 8192) 2198 dhp->p = get_rfc3526_prime_8192(NULL); 2199 else if (keylen >= 4096) 2200 dhp->p = get_rfc3526_prime_4096(NULL); 2201 else if (keylen >= 3072) 2202 dhp->p = get_rfc3526_prime_3072(NULL); 2203 else if (keylen >= 2048) 2204 dhp->p = get_rfc3526_prime_2048(NULL); 2205 else if (keylen >= 1536) 2206 dhp->p = get_rfc3526_prime_1536(NULL); 2207 else 2208 dhp->p = get_rfc2409_prime_1024(NULL); 2209 2210 if (dhp->p == NULL || dhp->g == NULL) { 2211 DH_free(dhp); 2212 return (NULL); 2213 } 2214 return (dhp); 2215} 2216 2217void 2218ssl_update_cache(SSL *s, int mode) 2219{ 2220 int i; 2221 2222 /* 2223 * If the session_id_length is 0, we are not supposed to cache it, 2224 * and it would be rather hard to do anyway :-) 2225 */ 2226 if (s->session->session_id_length == 0) 2227 return; 2228 2229 i = s->session_ctx->internal->session_cache_mode; 2230 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2231 || SSL_CTX_add_session(s->session_ctx, s->session)) 2232 && (s->session_ctx->internal->new_session_cb != NULL)) { 2233 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2234 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2235 SSL_SESSION_free(s->session); 2236 } 2237 2238 /* auto flush every 255 connections */ 2239 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2240 ((i & mode) == mode)) { 2241 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2242 s->session_ctx->internal->stats.sess_connect_good : 2243 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2244 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2245 } 2246 } 2247} 2248 2249const SSL_METHOD * 2250SSL_get_ssl_method(SSL *s) 2251{ 2252 return (s->method); 2253} 2254 2255int 2256SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2257{ 2258 int conn = -1; 2259 int ret = 1; 2260 2261 if (s->method != meth) { 2262 if (s->internal->handshake_func != NULL) 2263 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2264 2265 if (s->method->internal->version == meth->internal->version) 2266 s->method = meth; 2267 else { 2268 s->method->internal->ssl_free(s); 2269 s->method = meth; 2270 ret = s->method->internal->ssl_new(s); 2271 } 2272 2273 if (conn == 1) 2274 s->internal->handshake_func = meth->internal->ssl_connect; 2275 else if (conn == 0) 2276 s->internal->handshake_func = meth->internal->ssl_accept; 2277 } 2278 return (ret); 2279} 2280 2281int 2282SSL_get_error(const SSL *s, int i) 2283{ 2284 int reason; 2285 unsigned long l; 2286 BIO *bio; 2287 2288 if (i > 0) 2289 return (SSL_ERROR_NONE); 2290 2291 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2292 * etc, where we do encode the error */ 2293 if ((l = ERR_peek_error()) != 0) { 2294 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2295 return (SSL_ERROR_SYSCALL); 2296 else 2297 return (SSL_ERROR_SSL); 2298 } 2299 2300 if ((i < 0) && SSL_want_read(s)) { 2301 bio = SSL_get_rbio(s); 2302 if (BIO_should_read(bio)) { 2303 return (SSL_ERROR_WANT_READ); 2304 } else if (BIO_should_write(bio)) { 2305 /* 2306 * This one doesn't make too much sense... We never 2307 * try to write to the rbio, and an application 2308 * program where rbio and wbio are separate couldn't 2309 * even know what it should wait for. However if we 2310 * ever set s->internal->rwstate incorrectly (so that we have 2311 * SSL_want_read(s) instead of SSL_want_write(s)) 2312 * and rbio and wbio *are* the same, this test works 2313 * around that bug; so it might be safer to keep it. 2314 */ 2315 return (SSL_ERROR_WANT_WRITE); 2316 } else if (BIO_should_io_special(bio)) { 2317 reason = BIO_get_retry_reason(bio); 2318 if (reason == BIO_RR_CONNECT) 2319 return (SSL_ERROR_WANT_CONNECT); 2320 else if (reason == BIO_RR_ACCEPT) 2321 return (SSL_ERROR_WANT_ACCEPT); 2322 else 2323 return (SSL_ERROR_SYSCALL); /* unknown */ 2324 } 2325 } 2326 2327 if ((i < 0) && SSL_want_write(s)) { 2328 bio = SSL_get_wbio(s); 2329 if (BIO_should_write(bio)) { 2330 return (SSL_ERROR_WANT_WRITE); 2331 } else if (BIO_should_read(bio)) { 2332 /* 2333 * See above (SSL_want_read(s) with 2334 * BIO_should_write(bio)) 2335 */ 2336 return (SSL_ERROR_WANT_READ); 2337 } else if (BIO_should_io_special(bio)) { 2338 reason = BIO_get_retry_reason(bio); 2339 if (reason == BIO_RR_CONNECT) 2340 return (SSL_ERROR_WANT_CONNECT); 2341 else if (reason == BIO_RR_ACCEPT) 2342 return (SSL_ERROR_WANT_ACCEPT); 2343 else 2344 return (SSL_ERROR_SYSCALL); 2345 } 2346 } 2347 if ((i < 0) && SSL_want_x509_lookup(s)) { 2348 return (SSL_ERROR_WANT_X509_LOOKUP); 2349 } 2350 2351 if (i == 0) { 2352 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2353 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2354 return (SSL_ERROR_ZERO_RETURN); 2355 } 2356 return (SSL_ERROR_SYSCALL); 2357} 2358 2359int 2360SSL_do_handshake(SSL *s) 2361{ 2362 int ret = 1; 2363 2364 if (s->internal->handshake_func == NULL) { 2365 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2366 return (-1); 2367 } 2368 2369 s->method->internal->ssl_renegotiate_check(s); 2370 2371 if (SSL_in_init(s) || SSL_in_before(s)) { 2372 ret = s->internal->handshake_func(s); 2373 } 2374 return (ret); 2375} 2376 2377/* 2378 * For the next 2 functions, SSL_clear() sets shutdown and so 2379 * one of these calls will reset it 2380 */ 2381void 2382SSL_set_accept_state(SSL *s) 2383{ 2384 s->server = 1; 2385 s->internal->shutdown = 0; 2386 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2387 s->internal->handshake_func = s->method->internal->ssl_accept; 2388 /* clear the current cipher */ 2389 ssl_clear_cipher_ctx(s); 2390 ssl_clear_hash_ctx(&s->read_hash); 2391 ssl_clear_hash_ctx(&s->internal->write_hash); 2392} 2393 2394void 2395SSL_set_connect_state(SSL *s) 2396{ 2397 s->server = 0; 2398 s->internal->shutdown = 0; 2399 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2400 s->internal->handshake_func = s->method->internal->ssl_connect; 2401 /* clear the current cipher */ 2402 ssl_clear_cipher_ctx(s); 2403 ssl_clear_hash_ctx(&s->read_hash); 2404 ssl_clear_hash_ctx(&s->internal->write_hash); 2405} 2406 2407int 2408ssl_undefined_function(SSL *s) 2409{ 2410 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2411 return (0); 2412} 2413 2414int 2415ssl_undefined_void_function(void) 2416{ 2417 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2418 return (0); 2419} 2420 2421int 2422ssl_undefined_const_function(const SSL *s) 2423{ 2424 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2425 return (0); 2426} 2427 2428const char * 2429ssl_version_string(int ver) 2430{ 2431 switch (ver) { 2432 case DTLS1_VERSION: 2433 return (SSL_TXT_DTLS1); 2434 case TLS1_VERSION: 2435 return (SSL_TXT_TLSV1); 2436 case TLS1_1_VERSION: 2437 return (SSL_TXT_TLSV1_1); 2438 case TLS1_2_VERSION: 2439 return (SSL_TXT_TLSV1_2); 2440 default: 2441 return ("unknown"); 2442 } 2443} 2444 2445const char * 2446SSL_get_version(const SSL *s) 2447{ 2448 return ssl_version_string(s->version); 2449} 2450 2451SSL * 2452SSL_dup(SSL *s) 2453{ 2454 STACK_OF(X509_NAME) *sk; 2455 X509_NAME *xn; 2456 SSL *ret; 2457 int i; 2458 2459 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2460 return (NULL); 2461 2462 ret->version = s->version; 2463 ret->internal->type = s->internal->type; 2464 ret->method = s->method; 2465 2466 if (s->session != NULL) { 2467 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2468 SSL_copy_session_id(ret, s); 2469 } else { 2470 /* 2471 * No session has been established yet, so we have to expect 2472 * that s->cert or ret->cert will be changed later -- 2473 * they should not both point to the same object, 2474 * and thus we can't use SSL_copy_session_id. 2475 */ 2476 2477 ret->method->internal->ssl_free(ret); 2478 ret->method = s->method; 2479 ret->method->internal->ssl_new(ret); 2480 2481 if (s->cert != NULL) { 2482 ssl_cert_free(ret->cert); 2483 ret->cert = ssl_cert_dup(s->cert); 2484 if (ret->cert == NULL) 2485 goto err; 2486 } 2487 2488 SSL_set_session_id_context(ret, 2489 s->sid_ctx, s->sid_ctx_length); 2490 } 2491 2492 ret->internal->options = s->internal->options; 2493 ret->internal->mode = s->internal->mode; 2494 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2495 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2496 ret->internal->msg_callback = s->internal->msg_callback; 2497 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2498 SSL_set_verify(ret, SSL_get_verify_mode(s), 2499 SSL_get_verify_callback(s)); 2500 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2501 ret->internal->generate_session_id = s->internal->generate_session_id; 2502 2503 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2504 2505 ret->internal->debug = s->internal->debug; 2506 2507 /* copy app data, a little dangerous perhaps */ 2508 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2509 &ret->internal->ex_data, &s->internal->ex_data)) 2510 goto err; 2511 2512 /* setup rbio, and wbio */ 2513 if (s->rbio != NULL) { 2514 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2515 goto err; 2516 } 2517 if (s->wbio != NULL) { 2518 if (s->wbio != s->rbio) { 2519 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2520 goto err; 2521 } else 2522 ret->wbio = ret->rbio; 2523 } 2524 ret->internal->rwstate = s->internal->rwstate; 2525 ret->internal->in_handshake = s->internal->in_handshake; 2526 ret->internal->handshake_func = s->internal->handshake_func; 2527 ret->server = s->server; 2528 ret->internal->renegotiate = s->internal->renegotiate; 2529 ret->internal->new_session = s->internal->new_session; 2530 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2531 ret->internal->shutdown = s->internal->shutdown; 2532 /* SSL_dup does not really work at any state, though */ 2533 S3I(ret)->hs.state = S3I(s)->hs.state; 2534 ret->internal->rstate = s->internal->rstate; 2535 2536 /* 2537 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2538 * ret->init_off 2539 */ 2540 ret->internal->init_num = 0; 2541 2542 ret->internal->hit = s->internal->hit; 2543 2544 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2545 2546 /* dup the cipher_list and cipher_list_by_id stacks */ 2547 if (s->cipher_list != NULL) { 2548 if ((ret->cipher_list = 2549 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2550 goto err; 2551 } 2552 if (s->internal->cipher_list_by_id != NULL) { 2553 if ((ret->internal->cipher_list_by_id = 2554 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2555 goto err; 2556 } 2557 2558 /* Dup the client_CA list */ 2559 if (s->internal->client_CA != NULL) { 2560 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2561 ret->internal->client_CA = sk; 2562 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2563 xn = sk_X509_NAME_value(sk, i); 2564 if (sk_X509_NAME_set(sk, i, 2565 X509_NAME_dup(xn)) == NULL) { 2566 X509_NAME_free(xn); 2567 goto err; 2568 } 2569 } 2570 } 2571 2572 if (0) { 2573err: 2574 if (ret != NULL) 2575 SSL_free(ret); 2576 ret = NULL; 2577 } 2578 return (ret); 2579} 2580 2581void 2582ssl_clear_cipher_ctx(SSL *s) 2583{ 2584 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2585 s->enc_read_ctx = NULL; 2586 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2587 s->internal->enc_write_ctx = NULL; 2588 2589 if (s->internal->aead_read_ctx != NULL) { 2590 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2591 free(s->internal->aead_read_ctx); 2592 s->internal->aead_read_ctx = NULL; 2593 } 2594 if (s->internal->aead_write_ctx != NULL) { 2595 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2596 free(s->internal->aead_write_ctx); 2597 s->internal->aead_write_ctx = NULL; 2598 } 2599 2600} 2601 2602/* Fix this function so that it takes an optional type parameter */ 2603X509 * 2604SSL_get_certificate(const SSL *s) 2605{ 2606 if (s->cert != NULL) 2607 return (s->cert->key->x509); 2608 else 2609 return (NULL); 2610} 2611 2612/* Fix this function so that it takes an optional type parameter */ 2613EVP_PKEY * 2614SSL_get_privatekey(SSL *s) 2615{ 2616 if (s->cert != NULL) 2617 return (s->cert->key->privatekey); 2618 else 2619 return (NULL); 2620} 2621 2622const SSL_CIPHER * 2623SSL_get_current_cipher(const SSL *s) 2624{ 2625 if ((s->session != NULL) && (s->session->cipher != NULL)) 2626 return (s->session->cipher); 2627 return (NULL); 2628} 2629const void * 2630SSL_get_current_compression(SSL *s) 2631{ 2632 return (NULL); 2633} 2634 2635const void * 2636SSL_get_current_expansion(SSL *s) 2637{ 2638 return (NULL); 2639} 2640 2641int 2642ssl_init_wbio_buffer(SSL *s, int push) 2643{ 2644 BIO *bbio; 2645 2646 if (s->bbio == NULL) { 2647 bbio = BIO_new(BIO_f_buffer()); 2648 if (bbio == NULL) 2649 return (0); 2650 s->bbio = bbio; 2651 } else { 2652 bbio = s->bbio; 2653 if (s->bbio == s->wbio) 2654 s->wbio = BIO_pop(s->wbio); 2655 } 2656 (void)BIO_reset(bbio); 2657/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2658 if (!BIO_set_read_buffer_size(bbio, 1)) { 2659 SSLerror(s, ERR_R_BUF_LIB); 2660 return (0); 2661 } 2662 if (push) { 2663 if (s->wbio != bbio) 2664 s->wbio = BIO_push(bbio, s->wbio); 2665 } else { 2666 if (s->wbio == bbio) 2667 s->wbio = BIO_pop(bbio); 2668 } 2669 return (1); 2670} 2671 2672void 2673ssl_free_wbio_buffer(SSL *s) 2674{ 2675 if (s == NULL) 2676 return; 2677 2678 if (s->bbio == NULL) 2679 return; 2680 2681 if (s->bbio == s->wbio) { 2682 /* remove buffering */ 2683 s->wbio = BIO_pop(s->wbio); 2684 } 2685 BIO_free(s->bbio); 2686 s->bbio = NULL; 2687} 2688 2689void 2690SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2691{ 2692 ctx->internal->quiet_shutdown = mode; 2693} 2694 2695int 2696SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2697{ 2698 return (ctx->internal->quiet_shutdown); 2699} 2700 2701void 2702SSL_set_quiet_shutdown(SSL *s, int mode) 2703{ 2704 s->internal->quiet_shutdown = mode; 2705} 2706 2707int 2708SSL_get_quiet_shutdown(const SSL *s) 2709{ 2710 return (s->internal->quiet_shutdown); 2711} 2712 2713void 2714SSL_set_shutdown(SSL *s, int mode) 2715{ 2716 s->internal->shutdown = mode; 2717} 2718 2719int 2720SSL_get_shutdown(const SSL *s) 2721{ 2722 return (s->internal->shutdown); 2723} 2724 2725int 2726SSL_version(const SSL *s) 2727{ 2728 return (s->version); 2729} 2730 2731SSL_CTX * 2732SSL_get_SSL_CTX(const SSL *ssl) 2733{ 2734 return (ssl->ctx); 2735} 2736 2737SSL_CTX * 2738SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2739{ 2740 CERT *ocert = ssl->cert; 2741 2742 if (ssl->ctx == ctx) 2743 return (ssl->ctx); 2744 if (ctx == NULL) 2745 ctx = ssl->initial_ctx; 2746 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2747 if (ocert != NULL) { 2748 int i; 2749 /* Copy negotiated digests from original certificate. */ 2750 for (i = 0; i < SSL_PKEY_NUM; i++) 2751 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2752 ssl_cert_free(ocert); 2753 } 2754 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2755 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2756 ssl->ctx = ctx; 2757 return (ssl->ctx); 2758} 2759 2760int 2761SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2762{ 2763 return (X509_STORE_set_default_paths(ctx->cert_store)); 2764} 2765 2766int 2767SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2768 const char *CApath) 2769{ 2770 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2771} 2772 2773int 2774SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2775{ 2776 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2777} 2778 2779void 2780SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2781{ 2782 ssl->internal->info_callback = cb; 2783} 2784 2785void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2786{ 2787 return (ssl->internal->info_callback); 2788} 2789 2790int 2791SSL_state(const SSL *ssl) 2792{ 2793 return (S3I(ssl)->hs.state); 2794} 2795 2796void 2797SSL_set_state(SSL *ssl, int state) 2798{ 2799 S3I(ssl)->hs.state = state; 2800} 2801 2802void 2803SSL_set_verify_result(SSL *ssl, long arg) 2804{ 2805 ssl->verify_result = arg; 2806} 2807 2808long 2809SSL_get_verify_result(const SSL *ssl) 2810{ 2811 return (ssl->verify_result); 2812} 2813 2814int 2815SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2816 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2817{ 2818 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2819 new_func, dup_func, free_func)); 2820} 2821 2822int 2823SSL_set_ex_data(SSL *s, int idx, void *arg) 2824{ 2825 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2826} 2827 2828void * 2829SSL_get_ex_data(const SSL *s, int idx) 2830{ 2831 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2832} 2833 2834int 2835SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2836 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2837{ 2838 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2839 new_func, dup_func, free_func)); 2840} 2841 2842int 2843SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2844{ 2845 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2846} 2847 2848void * 2849SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2850{ 2851 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2852} 2853 2854int 2855ssl_ok(SSL *s) 2856{ 2857 return (1); 2858} 2859 2860X509_STORE * 2861SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2862{ 2863 return (ctx->cert_store); 2864} 2865 2866void 2867SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2868{ 2869 X509_STORE_free(ctx->cert_store); 2870 ctx->cert_store = store; 2871} 2872 2873int 2874SSL_want(const SSL *s) 2875{ 2876 return (s->internal->rwstate); 2877} 2878 2879void 2880SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2881 int keylength)) 2882{ 2883 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2884} 2885 2886void 2887SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2888 int keylength)) 2889{ 2890 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2891} 2892 2893void 2894SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2895 int keylength)) 2896{ 2897 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2898} 2899 2900void 2901SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2902 int keylength)) 2903{ 2904 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2905} 2906 2907void 2908SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2909 int is_export, int keylength)) 2910{ 2911 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2912 (void (*)(void))ecdh); 2913} 2914 2915void 2916SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2917 int keylength)) 2918{ 2919 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2920} 2921 2922 2923void 2924SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2925 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2926{ 2927 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2928 (void (*)(void))cb); 2929} 2930 2931void 2932SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2933 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2934{ 2935 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2936} 2937 2938void 2939ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2940{ 2941 if (*hash) 2942 EVP_MD_CTX_destroy(*hash); 2943 *hash = NULL; 2944} 2945 2946void 2947SSL_set_debug(SSL *s, int debug) 2948{ 2949 s->internal->debug = debug; 2950} 2951 2952int 2953SSL_cache_hit(SSL *s) 2954{ 2955 return (s->internal->hit); 2956} 2957 2958int 2959SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2960{ 2961 return ssl_version_set_min(ctx->method, version, 2962 ctx->internal->max_version, &ctx->internal->min_version); 2963} 2964 2965int 2966SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2967{ 2968 return ssl_version_set_max(ctx->method, version, 2969 ctx->internal->min_version, &ctx->internal->max_version); 2970} 2971 2972int 2973SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2974{ 2975 return ssl_version_set_min(ssl->method, version, 2976 ssl->internal->max_version, &ssl->internal->min_version); 2977} 2978 2979int 2980SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2981{ 2982 return ssl_version_set_max(ssl->method, version, 2983 ssl->internal->min_version, &ssl->internal->max_version); 2984} 2985 2986static int 2987ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2988{ 2989 SSL_CIPHER const *a = a_; 2990 SSL_CIPHER const *b = b_; 2991 return ssl_cipher_id_cmp(a, b); 2992} 2993 2994SSL_CIPHER * 2995OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 2996{ 2997 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 2998 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 2999} 3000