ssl_lib.c revision 1.165
1/* $OpenBSD: ssl_lib.c,v 1.165 2017/08/11 21:06:52 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 s->internal->next_proto_negotiated = NULL; 343 344 if (s->ctx->internal->alpn_client_proto_list != NULL) { 345 s->internal->alpn_client_proto_list = 346 malloc(s->ctx->internal->alpn_client_proto_list_len); 347 if (s->internal->alpn_client_proto_list == NULL) 348 goto err; 349 memcpy(s->internal->alpn_client_proto_list, 350 s->ctx->internal->alpn_client_proto_list, 351 s->ctx->internal->alpn_client_proto_list_len); 352 s->internal->alpn_client_proto_list_len = 353 s->ctx->internal->alpn_client_proto_list_len; 354 } 355 356 s->verify_result = X509_V_OK; 357 358 s->method = ctx->method; 359 360 if (!s->method->internal->ssl_new(s)) 361 goto err; 362 363 s->references = 1; 364 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 365 366 SSL_clear(s); 367 368 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 369 370 return (s); 371 372 err: 373 SSL_free(s); 374 SSLerrorx(ERR_R_MALLOC_FAILURE); 375 return (NULL); 376} 377 378int 379SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381{ 382 if (sid_ctx_len > sizeof ctx->sid_ctx) { 383 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ctx->sid_ctx_length = sid_ctx_len; 387 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390} 391 392int 393SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 394 unsigned int sid_ctx_len) 395{ 396 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 397 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 398 return (0); 399 } 400 ssl->sid_ctx_length = sid_ctx_len; 401 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 402 403 return (1); 404} 405 406int 407SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 408{ 409 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 410 ctx->internal->generate_session_id = cb; 411 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 412 return (1); 413} 414 415int 416SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 417{ 418 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 419 ssl->internal->generate_session_id = cb; 420 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 421 return (1); 422} 423 424int 425SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 426 unsigned int id_len) 427{ 428 /* 429 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 430 * shows how we can "construct" a session to give us the desired 431 * check - ie. to find if there's a session in the hash table 432 * that would conflict with any new session built out of this 433 * id/id_len and the ssl_version in use by this SSL. 434 */ 435 SSL_SESSION r, *p; 436 437 if (id_len > sizeof r.session_id) 438 return (0); 439 440 r.ssl_version = ssl->version; 441 r.session_id_length = id_len; 442 memcpy(r.session_id, id, id_len); 443 444 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 445 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 446 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 447 return (p != NULL); 448} 449 450int 451SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 452{ 453 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 454} 455 456int 457SSL_set_purpose(SSL *s, int purpose) 458{ 459 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 460} 461 462int 463SSL_CTX_set_trust(SSL_CTX *s, int trust) 464{ 465 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 466} 467 468int 469SSL_set_trust(SSL *s, int trust) 470{ 471 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 472} 473 474int 475SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 476{ 477 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 478} 479 480int 481SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482{ 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484} 485 486void 487SSL_free(SSL *s) 488{ 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 BUF_MEM_free(s->internal->init_buf); 516 517 /* add extra stuff */ 518 sk_SSL_CIPHER_free(s->cipher_list); 519 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 520 521 /* Make the next call work :-) */ 522 if (s->session != NULL) { 523 ssl_clear_bad_session(s); 524 SSL_SESSION_free(s->session); 525 } 526 527 ssl_clear_cipher_ctx(s); 528 ssl_clear_hash_ctx(&s->read_hash); 529 ssl_clear_hash_ctx(&s->internal->write_hash); 530 531 ssl_cert_free(s->cert); 532 533 free(s->tlsext_hostname); 534 SSL_CTX_free(s->initial_ctx); 535 536 free(s->internal->tlsext_ecpointformatlist); 537 free(s->internal->tlsext_supportedgroups); 538 539 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 540 X509_EXTENSION_free); 541 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 542 free(s->internal->tlsext_ocsp_resp); 543 544 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 545 546 if (s->method != NULL) 547 s->method->internal->ssl_free(s); 548 549 SSL_CTX_free(s->ctx); 550 551 free(s->internal->next_proto_negotiated); 552 free(s->internal->alpn_client_proto_list); 553 554#ifndef OPENSSL_NO_SRTP 555 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 556#endif 557 558 free(s->internal); 559 free(s); 560} 561 562void 563SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 564{ 565 /* If the output buffering BIO is still in place, remove it */ 566 if (s->bbio != NULL) { 567 if (s->wbio == s->bbio) { 568 s->wbio = s->wbio->next_bio; 569 s->bbio->next_bio = NULL; 570 } 571 } 572 573 if (s->rbio != rbio && s->rbio != s->wbio) 574 BIO_free_all(s->rbio); 575 if (s->wbio != wbio) 576 BIO_free_all(s->wbio); 577 s->rbio = rbio; 578 s->wbio = wbio; 579} 580 581BIO * 582SSL_get_rbio(const SSL *s) 583{ 584 return (s->rbio); 585} 586 587BIO * 588SSL_get_wbio(const SSL *s) 589{ 590 return (s->wbio); 591} 592 593int 594SSL_get_fd(const SSL *s) 595{ 596 return (SSL_get_rfd(s)); 597} 598 599int 600SSL_get_rfd(const SSL *s) 601{ 602 int ret = -1; 603 BIO *b, *r; 604 605 b = SSL_get_rbio(s); 606 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 607 if (r != NULL) 608 BIO_get_fd(r, &ret); 609 return (ret); 610} 611 612int 613SSL_get_wfd(const SSL *s) 614{ 615 int ret = -1; 616 BIO *b, *r; 617 618 b = SSL_get_wbio(s); 619 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 620 if (r != NULL) 621 BIO_get_fd(r, &ret); 622 return (ret); 623} 624 625int 626SSL_set_fd(SSL *s, int fd) 627{ 628 int ret = 0; 629 BIO *bio = NULL; 630 631 bio = BIO_new(BIO_s_socket()); 632 633 if (bio == NULL) { 634 SSLerror(s, ERR_R_BUF_LIB); 635 goto err; 636 } 637 BIO_set_fd(bio, fd, BIO_NOCLOSE); 638 SSL_set_bio(s, bio, bio); 639 ret = 1; 640err: 641 return (ret); 642} 643 644int 645SSL_set_wfd(SSL *s, int fd) 646{ 647 int ret = 0; 648 BIO *bio = NULL; 649 650 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 651 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 652 bio = BIO_new(BIO_s_socket()); 653 654 if (bio == NULL) { 655 SSLerror(s, ERR_R_BUF_LIB); 656 goto err; 657 } 658 BIO_set_fd(bio, fd, BIO_NOCLOSE); 659 SSL_set_bio(s, SSL_get_rbio(s), bio); 660 } else 661 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 662 ret = 1; 663err: 664 return (ret); 665} 666 667int 668SSL_set_rfd(SSL *s, int fd) 669{ 670 int ret = 0; 671 BIO *bio = NULL; 672 673 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 674 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 675 bio = BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) { 678 SSLerror(s, ERR_R_BUF_LIB); 679 goto err; 680 } 681 BIO_set_fd(bio, fd, BIO_NOCLOSE); 682 SSL_set_bio(s, bio, SSL_get_wbio(s)); 683 } else 684 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 685 ret = 1; 686err: 687 return (ret); 688} 689 690 691/* return length of latest Finished message we sent, copy to 'buf' */ 692size_t 693SSL_get_finished(const SSL *s, void *buf, size_t count) 694{ 695 size_t ret = 0; 696 697 if (s->s3 != NULL) { 698 ret = S3I(s)->tmp.finish_md_len; 699 if (count > ret) 700 count = ret; 701 memcpy(buf, S3I(s)->tmp.finish_md, count); 702 } 703 return (ret); 704} 705 706/* return length of latest Finished message we expected, copy to 'buf' */ 707size_t 708SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 709{ 710 size_t ret = 0; 711 712 if (s->s3 != NULL) { 713 ret = S3I(s)->tmp.peer_finish_md_len; 714 if (count > ret) 715 count = ret; 716 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 717 } 718 return (ret); 719} 720 721 722int 723SSL_get_verify_mode(const SSL *s) 724{ 725 return (s->verify_mode); 726} 727 728int 729SSL_get_verify_depth(const SSL *s) 730{ 731 return (X509_VERIFY_PARAM_get_depth(s->param)); 732} 733 734int 735(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 736{ 737 return (s->internal->verify_callback); 738} 739 740int 741SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 742{ 743 return (ctx->verify_mode); 744} 745 746int 747SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 748{ 749 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 750} 751 752int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 753{ 754 return (ctx->internal->default_verify_callback); 755} 756 757void 758SSL_set_verify(SSL *s, int mode, 759 int (*callback)(int ok, X509_STORE_CTX *ctx)) 760{ 761 s->verify_mode = mode; 762 if (callback != NULL) 763 s->internal->verify_callback = callback; 764} 765 766void 767SSL_set_verify_depth(SSL *s, int depth) 768{ 769 X509_VERIFY_PARAM_set_depth(s->param, depth); 770} 771 772void 773SSL_set_read_ahead(SSL *s, int yes) 774{ 775 s->internal->read_ahead = yes; 776} 777 778int 779SSL_get_read_ahead(const SSL *s) 780{ 781 return (s->internal->read_ahead); 782} 783 784int 785SSL_pending(const SSL *s) 786{ 787 /* 788 * SSL_pending cannot work properly if read-ahead is enabled 789 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 790 * and it is impossible to fix since SSL_pending cannot report 791 * errors that may be observed while scanning the new data. 792 * (Note that SSL_pending() is often used as a boolean value, 793 * so we'd better not return -1.) 794 */ 795 return (s->method->internal->ssl_pending(s)); 796} 797 798X509 * 799SSL_get_peer_certificate(const SSL *s) 800{ 801 X509 *r; 802 803 if ((s == NULL) || (s->session == NULL)) 804 r = NULL; 805 else 806 r = s->session->peer; 807 808 if (r == NULL) 809 return (r); 810 811 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 812 813 return (r); 814} 815 816STACK_OF(X509) * 817SSL_get_peer_cert_chain(const SSL *s) 818{ 819 STACK_OF(X509) *r; 820 821 if ((s == NULL) || (s->session == NULL) || 822 (SSI(s)->sess_cert == NULL)) 823 r = NULL; 824 else 825 r = SSI(s)->sess_cert->cert_chain; 826 827 /* 828 * If we are a client, cert_chain includes the peer's own 829 * certificate; 830 * if we are a server, it does not. 831 */ 832 return (r); 833} 834 835/* 836 * Now in theory, since the calling process own 't' it should be safe to 837 * modify. We need to be able to read f without being hassled 838 */ 839void 840SSL_copy_session_id(SSL *t, const SSL *f) 841{ 842 CERT *tmp; 843 844 /* Do we need to to SSL locking? */ 845 SSL_set_session(t, SSL_get_session(f)); 846 847 /* 848 * What if we are setup as SSLv2 but want to talk SSLv3 or 849 * vice-versa. 850 */ 851 if (t->method != f->method) { 852 t->method->internal->ssl_free(t); /* cleanup current */ 853 t->method = f->method; /* change method */ 854 t->method->internal->ssl_new(t); /* setup new */ 855 } 856 857 tmp = t->cert; 858 if (f->cert != NULL) { 859 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 860 t->cert = f->cert; 861 } else 862 t->cert = NULL; 863 ssl_cert_free(tmp); 864 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 865} 866 867/* Fix this so it checks all the valid key/cert options */ 868int 869SSL_CTX_check_private_key(const SSL_CTX *ctx) 870{ 871 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 872 (ctx->internal->cert->key->x509 == NULL)) { 873 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 874 return (0); 875 } 876 if (ctx->internal->cert->key->privatekey == NULL) { 877 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 878 return (0); 879 } 880 return (X509_check_private_key(ctx->internal->cert->key->x509, 881 ctx->internal->cert->key->privatekey)); 882} 883 884/* Fix this function so that it takes an optional type parameter */ 885int 886SSL_check_private_key(const SSL *ssl) 887{ 888 if (ssl == NULL) { 889 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 890 return (0); 891 } 892 if (ssl->cert == NULL) { 893 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 894 return (0); 895 } 896 if (ssl->cert->key->x509 == NULL) { 897 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 898 return (0); 899 } 900 if (ssl->cert->key->privatekey == NULL) { 901 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 902 return (0); 903 } 904 return (X509_check_private_key(ssl->cert->key->x509, 905 ssl->cert->key->privatekey)); 906} 907 908int 909SSL_accept(SSL *s) 910{ 911 if (s->internal->handshake_func == NULL) 912 SSL_set_accept_state(s); /* Not properly initialized yet */ 913 914 return (s->method->internal->ssl_accept(s)); 915} 916 917int 918SSL_connect(SSL *s) 919{ 920 if (s->internal->handshake_func == NULL) 921 SSL_set_connect_state(s); /* Not properly initialized yet */ 922 923 return (s->method->internal->ssl_connect(s)); 924} 925 926long 927SSL_get_default_timeout(const SSL *s) 928{ 929 return (s->method->internal->get_timeout()); 930} 931 932int 933SSL_read(SSL *s, void *buf, int num) 934{ 935 if (s->internal->handshake_func == NULL) { 936 SSLerror(s, SSL_R_UNINITIALIZED); 937 return (-1); 938 } 939 940 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 941 s->internal->rwstate = SSL_NOTHING; 942 return (0); 943 } 944 return (s->method->internal->ssl_read(s, buf, num)); 945} 946 947int 948SSL_peek(SSL *s, void *buf, int num) 949{ 950 if (s->internal->handshake_func == NULL) { 951 SSLerror(s, SSL_R_UNINITIALIZED); 952 return (-1); 953 } 954 955 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 956 return (0); 957 } 958 return (s->method->internal->ssl_peek(s, buf, num)); 959} 960 961int 962SSL_write(SSL *s, const void *buf, int num) 963{ 964 if (s->internal->handshake_func == NULL) { 965 SSLerror(s, SSL_R_UNINITIALIZED); 966 return (-1); 967 } 968 969 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 970 s->internal->rwstate = SSL_NOTHING; 971 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 972 return (-1); 973 } 974 return (s->method->internal->ssl_write(s, buf, num)); 975} 976 977int 978SSL_shutdown(SSL *s) 979{ 980 /* 981 * Note that this function behaves differently from what one might 982 * expect. Return values are 0 for no success (yet), 983 * 1 for success; but calling it once is usually not enough, 984 * even if blocking I/O is used (see ssl3_shutdown). 985 */ 986 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(s, SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if ((s != NULL) && !SSL_in_init(s)) 993 return (s->method->internal->ssl_shutdown(s)); 994 else 995 return (1); 996} 997 998int 999SSL_renegotiate(SSL *s) 1000{ 1001 if (s->internal->renegotiate == 0) 1002 s->internal->renegotiate = 1; 1003 1004 s->internal->new_session = 1; 1005 1006 return (s->method->internal->ssl_renegotiate(s)); 1007} 1008 1009int 1010SSL_renegotiate_abbreviated(SSL *s) 1011{ 1012 if (s->internal->renegotiate == 0) 1013 s->internal->renegotiate = 1; 1014 1015 s->internal->new_session = 0; 1016 1017 return (s->method->internal->ssl_renegotiate(s)); 1018} 1019 1020int 1021SSL_renegotiate_pending(SSL *s) 1022{ 1023 /* 1024 * Becomes true when negotiation is requested; 1025 * false again once a handshake has finished. 1026 */ 1027 return (s->internal->renegotiate != 0); 1028} 1029 1030long 1031SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1032{ 1033 long l; 1034 1035 switch (cmd) { 1036 case SSL_CTRL_GET_READ_AHEAD: 1037 return (s->internal->read_ahead); 1038 case SSL_CTRL_SET_READ_AHEAD: 1039 l = s->internal->read_ahead; 1040 s->internal->read_ahead = larg; 1041 return (l); 1042 1043 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1044 s->internal->msg_callback_arg = parg; 1045 return (1); 1046 1047 case SSL_CTRL_OPTIONS: 1048 return (s->internal->options|=larg); 1049 case SSL_CTRL_CLEAR_OPTIONS: 1050 return (s->internal->options&=~larg); 1051 case SSL_CTRL_MODE: 1052 return (s->internal->mode|=larg); 1053 case SSL_CTRL_CLEAR_MODE: 1054 return (s->internal->mode &=~larg); 1055 case SSL_CTRL_GET_MAX_CERT_LIST: 1056 return (s->internal->max_cert_list); 1057 case SSL_CTRL_SET_MAX_CERT_LIST: 1058 l = s->internal->max_cert_list; 1059 s->internal->max_cert_list = larg; 1060 return (l); 1061 case SSL_CTRL_SET_MTU: 1062#ifndef OPENSSL_NO_DTLS1 1063 if (larg < (long)dtls1_min_mtu()) 1064 return (0); 1065#endif 1066 if (SSL_IS_DTLS(s)) { 1067 D1I(s)->mtu = larg; 1068 return (larg); 1069 } 1070 return (0); 1071 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1072 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1073 return (0); 1074 s->max_send_fragment = larg; 1075 return (1); 1076 case SSL_CTRL_GET_RI_SUPPORT: 1077 if (s->s3) 1078 return (S3I(s)->send_connection_binding); 1079 else return (0); 1080 default: 1081 if (SSL_IS_DTLS(s)) 1082 return dtls1_ctrl(s, cmd, larg, parg); 1083 return ssl3_ctrl(s, cmd, larg, parg); 1084 } 1085} 1086 1087long 1088SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1089{ 1090 switch (cmd) { 1091 case SSL_CTRL_SET_MSG_CALLBACK: 1092 s->internal->msg_callback = (void (*)(int write_p, int version, 1093 int content_type, const void *buf, size_t len, 1094 SSL *ssl, void *arg))(fp); 1095 return (1); 1096 1097 default: 1098 return (ssl3_callback_ctrl(s, cmd, fp)); 1099 } 1100} 1101 1102struct lhash_st_SSL_SESSION * 1103SSL_CTX_sessions(SSL_CTX *ctx) 1104{ 1105 return (ctx->internal->sessions); 1106} 1107 1108long 1109SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1110{ 1111 long l; 1112 1113 switch (cmd) { 1114 case SSL_CTRL_GET_READ_AHEAD: 1115 return (ctx->internal->read_ahead); 1116 case SSL_CTRL_SET_READ_AHEAD: 1117 l = ctx->internal->read_ahead; 1118 ctx->internal->read_ahead = larg; 1119 return (l); 1120 1121 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1122 ctx->internal->msg_callback_arg = parg; 1123 return (1); 1124 1125 case SSL_CTRL_GET_MAX_CERT_LIST: 1126 return (ctx->internal->max_cert_list); 1127 case SSL_CTRL_SET_MAX_CERT_LIST: 1128 l = ctx->internal->max_cert_list; 1129 ctx->internal->max_cert_list = larg; 1130 return (l); 1131 1132 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1133 l = ctx->internal->session_cache_size; 1134 ctx->internal->session_cache_size = larg; 1135 return (l); 1136 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1137 return (ctx->internal->session_cache_size); 1138 case SSL_CTRL_SET_SESS_CACHE_MODE: 1139 l = ctx->internal->session_cache_mode; 1140 ctx->internal->session_cache_mode = larg; 1141 return (l); 1142 case SSL_CTRL_GET_SESS_CACHE_MODE: 1143 return (ctx->internal->session_cache_mode); 1144 1145 case SSL_CTRL_SESS_NUMBER: 1146 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1147 case SSL_CTRL_SESS_CONNECT: 1148 return (ctx->internal->stats.sess_connect); 1149 case SSL_CTRL_SESS_CONNECT_GOOD: 1150 return (ctx->internal->stats.sess_connect_good); 1151 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1152 return (ctx->internal->stats.sess_connect_renegotiate); 1153 case SSL_CTRL_SESS_ACCEPT: 1154 return (ctx->internal->stats.sess_accept); 1155 case SSL_CTRL_SESS_ACCEPT_GOOD: 1156 return (ctx->internal->stats.sess_accept_good); 1157 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1158 return (ctx->internal->stats.sess_accept_renegotiate); 1159 case SSL_CTRL_SESS_HIT: 1160 return (ctx->internal->stats.sess_hit); 1161 case SSL_CTRL_SESS_CB_HIT: 1162 return (ctx->internal->stats.sess_cb_hit); 1163 case SSL_CTRL_SESS_MISSES: 1164 return (ctx->internal->stats.sess_miss); 1165 case SSL_CTRL_SESS_TIMEOUTS: 1166 return (ctx->internal->stats.sess_timeout); 1167 case SSL_CTRL_SESS_CACHE_FULL: 1168 return (ctx->internal->stats.sess_cache_full); 1169 case SSL_CTRL_OPTIONS: 1170 return (ctx->internal->options|=larg); 1171 case SSL_CTRL_CLEAR_OPTIONS: 1172 return (ctx->internal->options&=~larg); 1173 case SSL_CTRL_MODE: 1174 return (ctx->internal->mode|=larg); 1175 case SSL_CTRL_CLEAR_MODE: 1176 return (ctx->internal->mode&=~larg); 1177 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1178 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1179 return (0); 1180 ctx->internal->max_send_fragment = larg; 1181 return (1); 1182 default: 1183 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1184 } 1185} 1186 1187long 1188SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1189{ 1190 switch (cmd) { 1191 case SSL_CTRL_SET_MSG_CALLBACK: 1192 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1193 int content_type, const void *buf, size_t len, SSL *ssl, 1194 void *arg))(fp); 1195 return (1); 1196 1197 default: 1198 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1199 } 1200} 1201 1202int 1203ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1204{ 1205 long l; 1206 1207 l = a->id - b->id; 1208 if (l == 0L) 1209 return (0); 1210 else 1211 return ((l > 0) ? 1:-1); 1212} 1213 1214int 1215ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1216 const SSL_CIPHER * const *bp) 1217{ 1218 long l; 1219 1220 l = (*ap)->id - (*bp)->id; 1221 if (l == 0L) 1222 return (0); 1223 else 1224 return ((l > 0) ? 1:-1); 1225} 1226 1227/* 1228 * Return a STACK of the ciphers available for the SSL and in order of 1229 * preference. 1230 */ 1231STACK_OF(SSL_CIPHER) * 1232SSL_get_ciphers(const SSL *s) 1233{ 1234 if (s != NULL) { 1235 if (s->cipher_list != NULL) { 1236 return (s->cipher_list); 1237 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1238 return (s->ctx->cipher_list); 1239 } 1240 } 1241 return (NULL); 1242} 1243 1244/* 1245 * Return a STACK of the ciphers available for the SSL and in order of 1246 * algorithm id. 1247 */ 1248STACK_OF(SSL_CIPHER) * 1249ssl_get_ciphers_by_id(SSL *s) 1250{ 1251 if (s != NULL) { 1252 if (s->internal->cipher_list_by_id != NULL) { 1253 return (s->internal->cipher_list_by_id); 1254 } else if ((s->ctx != NULL) && 1255 (s->ctx->internal->cipher_list_by_id != NULL)) { 1256 return (s->ctx->internal->cipher_list_by_id); 1257 } 1258 } 1259 return (NULL); 1260} 1261 1262/* See if we have any ECC cipher suites. */ 1263int 1264ssl_has_ecc_ciphers(SSL *s) 1265{ 1266 STACK_OF(SSL_CIPHER) *ciphers; 1267 unsigned long alg_k, alg_a; 1268 SSL_CIPHER *cipher; 1269 int i; 1270 1271 if (s->version == DTLS1_VERSION) 1272 return 0; 1273 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1274 return 0; 1275 1276 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1277 cipher = sk_SSL_CIPHER_value(ciphers, i); 1278 1279 alg_k = cipher->algorithm_mkey; 1280 alg_a = cipher->algorithm_auth; 1281 1282 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1283 return 1; 1284 } 1285 1286 return 0; 1287} 1288 1289/* The old interface to get the same thing as SSL_get_ciphers(). */ 1290const char * 1291SSL_get_cipher_list(const SSL *s, int n) 1292{ 1293 SSL_CIPHER *c; 1294 STACK_OF(SSL_CIPHER) *sk; 1295 1296 if (s == NULL) 1297 return (NULL); 1298 sk = SSL_get_ciphers(s); 1299 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1300 return (NULL); 1301 c = sk_SSL_CIPHER_value(sk, n); 1302 if (c == NULL) 1303 return (NULL); 1304 return (c->name); 1305} 1306 1307/* Specify the ciphers to be used by default by the SSL_CTX. */ 1308int 1309SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1310{ 1311 STACK_OF(SSL_CIPHER) *sk; 1312 1313 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1314 &ctx->internal->cipher_list_by_id, str); 1315 /* 1316 * ssl_create_cipher_list may return an empty stack if it 1317 * was unable to find a cipher matching the given rule string 1318 * (for example if the rule string specifies a cipher which 1319 * has been disabled). This is not an error as far as 1320 * ssl_create_cipher_list is concerned, and hence 1321 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1322 * updated. 1323 */ 1324 if (sk == NULL) 1325 return (0); 1326 else if (sk_SSL_CIPHER_num(sk) == 0) { 1327 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1328 return (0); 1329 } 1330 return (1); 1331} 1332 1333/* Specify the ciphers to be used by the SSL. */ 1334int 1335SSL_set_cipher_list(SSL *s, const char *str) 1336{ 1337 STACK_OF(SSL_CIPHER) *sk; 1338 1339 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1340 &s->internal->cipher_list_by_id, str); 1341 /* see comment in SSL_CTX_set_cipher_list */ 1342 if (sk == NULL) 1343 return (0); 1344 else if (sk_SSL_CIPHER_num(sk) == 0) { 1345 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1346 return (0); 1347 } 1348 return (1); 1349} 1350 1351/* works well for SSLv2, not so good for SSLv3 */ 1352char * 1353SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1354{ 1355 char *end; 1356 STACK_OF(SSL_CIPHER) *sk; 1357 SSL_CIPHER *c; 1358 size_t curlen = 0; 1359 int i; 1360 1361 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1362 return (NULL); 1363 1364 sk = s->session->ciphers; 1365 if (sk_SSL_CIPHER_num(sk) == 0) 1366 return (NULL); 1367 1368 buf[0] = '\0'; 1369 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1370 c = sk_SSL_CIPHER_value(sk, i); 1371 end = buf + curlen; 1372 if (strlcat(buf, c->name, len) >= len || 1373 (curlen = strlcat(buf, ":", len)) >= len) { 1374 /* remove truncated cipher from list */ 1375 *end = '\0'; 1376 break; 1377 } 1378 } 1379 /* remove trailing colon */ 1380 if ((end = strrchr(buf, ':')) != NULL) 1381 *end = '\0'; 1382 return (buf); 1383} 1384 1385int 1386ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1387 size_t maxlen, size_t *outlen) 1388{ 1389 SSL_CIPHER *cipher; 1390 int ciphers = 0; 1391 CBB cbb; 1392 int i; 1393 1394 *outlen = 0; 1395 1396 if (sk == NULL) 1397 return (0); 1398 1399 if (!CBB_init_fixed(&cbb, p, maxlen)) 1400 goto err; 1401 1402 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1403 cipher = sk_SSL_CIPHER_value(sk, i); 1404 1405 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1406 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1407 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1408 continue; 1409 1410 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher))) 1411 goto err; 1412 1413 ciphers++; 1414 } 1415 1416 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1417 if (ciphers > 0 && !s->internal->renegotiate) { 1418 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1419 goto err; 1420 } 1421 1422 if (!CBB_finish(&cbb, NULL, outlen)) 1423 goto err; 1424 1425 return 1; 1426 1427 err: 1428 CBB_cleanup(&cbb); 1429 1430 return 0; 1431} 1432 1433STACK_OF(SSL_CIPHER) * 1434ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1435{ 1436 CBS cbs; 1437 const SSL_CIPHER *c; 1438 STACK_OF(SSL_CIPHER) *sk = NULL; 1439 unsigned long cipher_id; 1440 uint16_t cipher_value, max_version; 1441 1442 if (s->s3) 1443 S3I(s)->send_connection_binding = 0; 1444 1445 /* 1446 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1447 */ 1448 if (num < 2 || num > 0x10000 - 2) { 1449 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1450 return (NULL); 1451 } 1452 1453 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1454 SSLerror(s, ERR_R_MALLOC_FAILURE); 1455 goto err; 1456 } 1457 1458 CBS_init(&cbs, p, num); 1459 while (CBS_len(&cbs) > 0) { 1460 if (!CBS_get_u16(&cbs, &cipher_value)) { 1461 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1462 goto err; 1463 } 1464 1465 cipher_id = SSL3_CK_ID | cipher_value; 1466 1467 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1468 /* 1469 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1470 * renegotiating. 1471 */ 1472 if (s->internal->renegotiate) { 1473 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1474 ssl3_send_alert(s, SSL3_AL_FATAL, 1475 SSL_AD_HANDSHAKE_FAILURE); 1476 1477 goto err; 1478 } 1479 S3I(s)->send_connection_binding = 1; 1480 continue; 1481 } 1482 1483 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1484 /* 1485 * TLS_FALLBACK_SCSV indicates that the client 1486 * previously tried a higher protocol version. 1487 * Fail if the current version is an unexpected 1488 * downgrade. 1489 */ 1490 max_version = ssl_max_server_version(s); 1491 if (max_version == 0 || s->version < max_version) { 1492 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1493 if (s->s3 != NULL) 1494 ssl3_send_alert(s, SSL3_AL_FATAL, 1495 SSL_AD_INAPPROPRIATE_FALLBACK); 1496 goto err; 1497 } 1498 continue; 1499 } 1500 1501 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1502 if (!sk_SSL_CIPHER_push(sk, c)) { 1503 SSLerror(s, ERR_R_MALLOC_FAILURE); 1504 goto err; 1505 } 1506 } 1507 } 1508 1509 return (sk); 1510 1511err: 1512 sk_SSL_CIPHER_free(sk); 1513 1514 return (NULL); 1515} 1516 1517 1518/* 1519 * Return a servername extension value if provided in Client Hello, or NULL. 1520 * So far, only host_name types are defined (RFC 3546). 1521 */ 1522const char * 1523SSL_get_servername(const SSL *s, const int type) 1524{ 1525 if (type != TLSEXT_NAMETYPE_host_name) 1526 return (NULL); 1527 1528 return (s->session && !s->tlsext_hostname ? 1529 s->session->tlsext_hostname : 1530 s->tlsext_hostname); 1531} 1532 1533int 1534SSL_get_servername_type(const SSL *s) 1535{ 1536 if (s->session && 1537 (!s->tlsext_hostname ? 1538 s->session->tlsext_hostname : s->tlsext_hostname)) 1539 return (TLSEXT_NAMETYPE_host_name); 1540 return (-1); 1541} 1542 1543/* 1544 * SSL_select_next_proto implements the standard protocol selection. It is 1545 * expected that this function is called from the callback set by 1546 * SSL_CTX_set_next_proto_select_cb. 1547 * 1548 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1549 * strings. The length byte itself is not included in the length. A byte 1550 * string of length 0 is invalid. No byte string may be truncated. 1551 * 1552 * The current, but experimental algorithm for selecting the protocol is: 1553 * 1554 * 1) If the server doesn't support NPN then this is indicated to the 1555 * callback. In this case, the client application has to abort the connection 1556 * or have a default application level protocol. 1557 * 1558 * 2) If the server supports NPN, but advertises an empty list then the 1559 * client selects the first protcol in its list, but indicates via the 1560 * API that this fallback case was enacted. 1561 * 1562 * 3) Otherwise, the client finds the first protocol in the server's list 1563 * that it supports and selects this protocol. This is because it's 1564 * assumed that the server has better information about which protocol 1565 * a client should use. 1566 * 1567 * 4) If the client doesn't support any of the server's advertised 1568 * protocols, then this is treated the same as case 2. 1569 * 1570 * It returns either 1571 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1572 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1573 */ 1574int 1575SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1576 const unsigned char *server, unsigned int server_len, 1577 const unsigned char *client, unsigned int client_len) 1578{ 1579 unsigned int i, j; 1580 const unsigned char *result; 1581 int status = OPENSSL_NPN_UNSUPPORTED; 1582 1583 /* 1584 * For each protocol in server preference order, 1585 * see if we support it. 1586 */ 1587 for (i = 0; i < server_len; ) { 1588 for (j = 0; j < client_len; ) { 1589 if (server[i] == client[j] && 1590 memcmp(&server[i + 1], 1591 &client[j + 1], server[i]) == 0) { 1592 /* We found a match */ 1593 result = &server[i]; 1594 status = OPENSSL_NPN_NEGOTIATED; 1595 goto found; 1596 } 1597 j += client[j]; 1598 j++; 1599 } 1600 i += server[i]; 1601 i++; 1602 } 1603 1604 /* There's no overlap between our protocols and the server's list. */ 1605 result = client; 1606 status = OPENSSL_NPN_NO_OVERLAP; 1607 1608found: 1609 *out = (unsigned char *) result + 1; 1610 *outlen = result[0]; 1611 return (status); 1612} 1613 1614/* 1615 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1616 * requested protocol for this connection and returns 0. If the client didn't 1617 * request any protocol, then *data is set to NULL. 1618 * 1619 * Note that the client can request any protocol it chooses. The value returned 1620 * from this function need not be a member of the list of supported protocols 1621 * provided by the callback. 1622 */ 1623void 1624SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1625 unsigned *len) 1626{ 1627 *data = s->internal->next_proto_negotiated; 1628 if (!*data) { 1629 *len = 0; 1630 } else { 1631 *len = s->internal->next_proto_negotiated_len; 1632 } 1633} 1634 1635/* 1636 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1637 * TLS server needs a list of supported protocols for Next Protocol 1638 * Negotiation. The returned list must be in wire format. The list is returned 1639 * by setting |out| to point to it and |outlen| to its length. This memory will 1640 * not be modified, but one should assume that the SSL* keeps a reference to 1641 * it. 1642 * 1643 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1644 * Otherwise, no such extension will be included in the ServerHello. 1645 */ 1646void 1647SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1648 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1649{ 1650 ctx->internal->next_protos_advertised_cb = cb; 1651 ctx->internal->next_protos_advertised_cb_arg = arg; 1652} 1653 1654/* 1655 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1656 * client needs to select a protocol from the server's provided list. |out| 1657 * must be set to point to the selected protocol (which may be within |in|). 1658 * The length of the protocol name must be written into |outlen|. The server's 1659 * advertised protocols are provided in |in| and |inlen|. The callback can 1660 * assume that |in| is syntactically valid. 1661 * 1662 * The client must select a protocol. It is fatal to the connection if this 1663 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1664 */ 1665void 1666SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1667 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1668 unsigned int inlen, void *arg), void *arg) 1669{ 1670 ctx->internal->next_proto_select_cb = cb; 1671 ctx->internal->next_proto_select_cb_arg = arg; 1672} 1673 1674/* 1675 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1676 * protocols, which must be in wire-format (i.e. a series of non-empty, 1677 * 8-bit length-prefixed strings). Returns 0 on success. 1678 */ 1679int 1680SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1681 unsigned int protos_len) 1682{ 1683 free(ctx->internal->alpn_client_proto_list); 1684 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1685 return (1); 1686 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1687 ctx->internal->alpn_client_proto_list_len = protos_len; 1688 1689 return (0); 1690} 1691 1692/* 1693 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1694 * protocols, which must be in wire-format (i.e. a series of non-empty, 1695 * 8-bit length-prefixed strings). Returns 0 on success. 1696 */ 1697int 1698SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1699 unsigned int protos_len) 1700{ 1701 free(ssl->internal->alpn_client_proto_list); 1702 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1703 return (1); 1704 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1705 ssl->internal->alpn_client_proto_list_len = protos_len; 1706 1707 return (0); 1708} 1709 1710/* 1711 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1712 * ClientHello processing in order to select an ALPN protocol from the 1713 * client's list of offered protocols. 1714 */ 1715void 1716SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1717 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1718 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1719{ 1720 ctx->internal->alpn_select_cb = cb; 1721 ctx->internal->alpn_select_cb_arg = arg; 1722} 1723 1724/* 1725 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1726 * it sets data to point to len bytes of protocol name (not including the 1727 * leading length-prefix byte). If the server didn't respond with* a negotiated 1728 * protocol then len will be zero. 1729 */ 1730void 1731SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1732 unsigned *len) 1733{ 1734 *data = NULL; 1735 *len = 0; 1736 1737 if (ssl->s3 != NULL) { 1738 *data = ssl->s3->internal->alpn_selected; 1739 *len = ssl->s3->internal->alpn_selected_len; 1740 } 1741} 1742 1743int 1744SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1745 const char *label, size_t llen, const unsigned char *p, size_t plen, 1746 int use_context) 1747{ 1748 return (tls1_export_keying_material(s, out, olen, 1749 label, llen, p, plen, use_context)); 1750} 1751 1752static unsigned long 1753ssl_session_hash(const SSL_SESSION *a) 1754{ 1755 unsigned long l; 1756 1757 l = (unsigned long) 1758 ((unsigned int) a->session_id[0] )| 1759 ((unsigned int) a->session_id[1]<< 8L)| 1760 ((unsigned long)a->session_id[2]<<16L)| 1761 ((unsigned long)a->session_id[3]<<24L); 1762 return (l); 1763} 1764 1765/* 1766 * NB: If this function (or indeed the hash function which uses a sort of 1767 * coarser function than this one) is changed, ensure 1768 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1769 * able to construct an SSL_SESSION that will collide with any existing session 1770 * with a matching session ID. 1771 */ 1772static int 1773ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1774{ 1775 if (a->ssl_version != b->ssl_version) 1776 return (1); 1777 if (a->session_id_length != b->session_id_length) 1778 return (1); 1779 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1780 return (1); 1781 return (0); 1782} 1783 1784/* 1785 * These wrapper functions should remain rather than redeclaring 1786 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1787 * variable. The reason is that the functions aren't static, they're exposed via 1788 * ssl.h. 1789 */ 1790static unsigned long 1791ssl_session_LHASH_HASH(const void *arg) 1792{ 1793 const SSL_SESSION *a = arg; 1794 1795 return ssl_session_hash(a); 1796} 1797 1798static int 1799ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1800{ 1801 const SSL_SESSION *a = arg1; 1802 const SSL_SESSION *b = arg2; 1803 1804 return ssl_session_cmp(a, b); 1805} 1806 1807SSL_CTX * 1808SSL_CTX_new(const SSL_METHOD *meth) 1809{ 1810 SSL_CTX *ret; 1811 1812 if (meth == NULL) { 1813 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1814 return (NULL); 1815 } 1816 1817 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1818 SSLerrorx(ERR_R_MALLOC_FAILURE); 1819 return (NULL); 1820 } 1821 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1822 free(ret); 1823 SSLerrorx(ERR_R_MALLOC_FAILURE); 1824 return (NULL); 1825 } 1826 1827 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1828 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1829 goto err; 1830 } 1831 1832 ret->method = meth; 1833 ret->internal->min_version = meth->internal->min_version; 1834 ret->internal->max_version = meth->internal->max_version; 1835 1836 ret->cert_store = NULL; 1837 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1838 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1839 ret->internal->session_cache_head = NULL; 1840 ret->internal->session_cache_tail = NULL; 1841 1842 /* We take the system default */ 1843 ret->session_timeout = meth->internal->get_timeout(); 1844 1845 ret->internal->new_session_cb = 0; 1846 ret->internal->remove_session_cb = 0; 1847 ret->internal->get_session_cb = 0; 1848 ret->internal->generate_session_id = 0; 1849 1850 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1851 1852 ret->references = 1; 1853 ret->internal->quiet_shutdown = 0; 1854 1855 ret->internal->info_callback = NULL; 1856 1857 ret->internal->app_verify_callback = 0; 1858 ret->internal->app_verify_arg = NULL; 1859 1860 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1861 ret->internal->read_ahead = 0; 1862 ret->internal->msg_callback = 0; 1863 ret->internal->msg_callback_arg = NULL; 1864 ret->verify_mode = SSL_VERIFY_NONE; 1865 ret->sid_ctx_length = 0; 1866 ret->internal->default_verify_callback = NULL; 1867 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1868 goto err; 1869 1870 ret->default_passwd_callback = 0; 1871 ret->default_passwd_callback_userdata = NULL; 1872 ret->internal->client_cert_cb = 0; 1873 ret->internal->app_gen_cookie_cb = 0; 1874 ret->internal->app_verify_cookie_cb = 0; 1875 1876 ret->internal->sessions = lh_SSL_SESSION_new(); 1877 if (ret->internal->sessions == NULL) 1878 goto err; 1879 ret->cert_store = X509_STORE_new(); 1880 if (ret->cert_store == NULL) 1881 goto err; 1882 1883 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1884 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1885 if (ret->cipher_list == NULL || 1886 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1887 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1888 goto err2; 1889 } 1890 1891 ret->param = X509_VERIFY_PARAM_new(); 1892 if (!ret->param) 1893 goto err; 1894 1895 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1896 goto err; 1897 1898 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1899 1900 ret->extra_certs = NULL; 1901 1902 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1903 1904 ret->internal->tlsext_servername_callback = 0; 1905 ret->internal->tlsext_servername_arg = NULL; 1906 1907 /* Setup RFC4507 ticket keys */ 1908 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1909 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1910 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1911 1912 ret->internal->tlsext_status_cb = 0; 1913 ret->internal->tlsext_status_arg = NULL; 1914 1915 ret->internal->next_protos_advertised_cb = 0; 1916 ret->internal->next_proto_select_cb = 0; 1917 1918#ifndef OPENSSL_NO_ENGINE 1919 ret->internal->client_cert_engine = NULL; 1920#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1921#define eng_strx(x) #x 1922#define eng_str(x) eng_strx(x) 1923 /* Use specific client engine automatically... ignore errors */ 1924 { 1925 ENGINE *eng; 1926 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1927 if (!eng) { 1928 ERR_clear_error(); 1929 ENGINE_load_builtin_engines(); 1930 eng = ENGINE_by_id(eng_str( 1931 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1932 } 1933 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1934 ERR_clear_error(); 1935 } 1936#endif 1937#endif 1938 /* 1939 * Default is to connect to non-RI servers. When RI is more widely 1940 * deployed might change this. 1941 */ 1942 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1943 1944 return (ret); 1945err: 1946 SSLerrorx(ERR_R_MALLOC_FAILURE); 1947err2: 1948 SSL_CTX_free(ret); 1949 return (NULL); 1950} 1951 1952void 1953SSL_CTX_free(SSL_CTX *ctx) 1954{ 1955 int i; 1956 1957 if (ctx == NULL) 1958 return; 1959 1960 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1961 if (i > 0) 1962 return; 1963 1964 X509_VERIFY_PARAM_free(ctx->param); 1965 1966 /* 1967 * Free internal session cache. However: the remove_cb() may reference 1968 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1969 * after the sessions were flushed. 1970 * As the ex_data handling routines might also touch the session cache, 1971 * the most secure solution seems to be: empty (flush) the cache, then 1972 * free ex_data, then finally free the cache. 1973 * (See ticket [openssl.org #212].) 1974 */ 1975 if (ctx->internal->sessions != NULL) 1976 SSL_CTX_flush_sessions(ctx, 0); 1977 1978 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1979 1980 lh_SSL_SESSION_free(ctx->internal->sessions); 1981 1982 X509_STORE_free(ctx->cert_store); 1983 sk_SSL_CIPHER_free(ctx->cipher_list); 1984 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1985 ssl_cert_free(ctx->internal->cert); 1986 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1987 sk_X509_pop_free(ctx->extra_certs, X509_free); 1988 1989#ifndef OPENSSL_NO_SRTP 1990 if (ctx->internal->srtp_profiles) 1991 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1992#endif 1993 1994#ifndef OPENSSL_NO_ENGINE 1995 if (ctx->internal->client_cert_engine) 1996 ENGINE_finish(ctx->internal->client_cert_engine); 1997#endif 1998 1999 free(ctx->internal->tlsext_ecpointformatlist); 2000 free(ctx->internal->tlsext_supportedgroups); 2001 2002 free(ctx->internal->alpn_client_proto_list); 2003 2004 free(ctx->internal); 2005 free(ctx); 2006} 2007 2008void 2009SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2010{ 2011 ctx->default_passwd_callback = cb; 2012} 2013 2014void 2015SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2016{ 2017 ctx->default_passwd_callback_userdata = u; 2018} 2019 2020void 2021SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2022 void *), void *arg) 2023{ 2024 ctx->internal->app_verify_callback = cb; 2025 ctx->internal->app_verify_arg = arg; 2026} 2027 2028void 2029SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2030{ 2031 ctx->verify_mode = mode; 2032 ctx->internal->default_verify_callback = cb; 2033} 2034 2035void 2036SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2037{ 2038 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2039} 2040 2041void 2042ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2043{ 2044 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2045 int have_ecc_cert; 2046 unsigned long mask_k, mask_a; 2047 X509 *x = NULL; 2048 CERT_PKEY *cpk; 2049 2050 if (c == NULL) 2051 return; 2052 2053 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2054 c->dh_tmp_auto != 0); 2055 2056 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2057 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2058 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2059 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2061 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2062 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2063 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2064 2065 mask_k = 0; 2066 mask_a = 0; 2067 2068 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2069 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2070 mask_k |= SSL_kGOST; 2071 mask_a |= SSL_aGOST01; 2072 } 2073 2074 if (rsa_enc) 2075 mask_k |= SSL_kRSA; 2076 2077 if (dh_tmp) 2078 mask_k |= SSL_kDHE; 2079 2080 if (rsa_enc || rsa_sign) 2081 mask_a |= SSL_aRSA; 2082 2083 if (dsa_sign) 2084 mask_a |= SSL_aDSS; 2085 2086 mask_a |= SSL_aNULL; 2087 2088 /* 2089 * An ECC certificate may be usable for ECDH and/or 2090 * ECDSA cipher suites depending on the key usage extension. 2091 */ 2092 if (have_ecc_cert) { 2093 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2094 2095 /* This call populates extension flags (ex_flags). */ 2096 X509_check_purpose(x, -1, 0); 2097 2098 /* Key usage, if present, must allow signing. */ 2099 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2100 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2101 mask_a |= SSL_aECDSA; 2102 } 2103 2104 mask_k |= SSL_kECDHE; 2105 2106 c->mask_k = mask_k; 2107 c->mask_a = mask_a; 2108 c->valid = 1; 2109} 2110 2111/* See if this handshake is using an ECC cipher suite. */ 2112int 2113ssl_using_ecc_cipher(SSL *s) 2114{ 2115 unsigned long alg_a, alg_k; 2116 2117 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2118 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2119 2120 return SSI(s)->tlsext_ecpointformatlist != NULL && 2121 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2122 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2123} 2124 2125int 2126ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2127{ 2128 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2129 unsigned long alg_a; 2130 2131 alg_a = cs->algorithm_auth; 2132 2133 if (alg_a & SSL_aECDSA) { 2134 /* This call populates extension flags (ex_flags). */ 2135 X509_check_purpose(x, -1, 0); 2136 2137 /* Key usage, if present, must allow signing. */ 2138 if ((x->ex_flags & EXFLAG_KUSAGE) && 2139 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2140 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2141 return (0); 2142 } 2143 } 2144 2145 return (1); 2146} 2147 2148CERT_PKEY * 2149ssl_get_server_send_pkey(const SSL *s) 2150{ 2151 unsigned long alg_a; 2152 CERT *c; 2153 int i; 2154 2155 c = s->cert; 2156 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2157 2158 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2159 2160 if (alg_a & SSL_aECDSA) { 2161 i = SSL_PKEY_ECC; 2162 } else if (alg_a & SSL_aDSS) { 2163 i = SSL_PKEY_DSA_SIGN; 2164 } else if (alg_a & SSL_aRSA) { 2165 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2166 i = SSL_PKEY_RSA_SIGN; 2167 else 2168 i = SSL_PKEY_RSA_ENC; 2169 } else if (alg_a & SSL_aGOST01) { 2170 i = SSL_PKEY_GOST01; 2171 } else { /* if (alg_a & SSL_aNULL) */ 2172 SSLerror(s, ERR_R_INTERNAL_ERROR); 2173 return (NULL); 2174 } 2175 2176 return (c->pkeys + i); 2177} 2178 2179X509 * 2180ssl_get_server_send_cert(const SSL *s) 2181{ 2182 CERT_PKEY *cpk; 2183 2184 cpk = ssl_get_server_send_pkey(s); 2185 if (!cpk) 2186 return (NULL); 2187 return (cpk->x509); 2188} 2189 2190EVP_PKEY * 2191ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2192{ 2193 unsigned long alg_a; 2194 CERT *c; 2195 int idx = -1; 2196 2197 alg_a = cipher->algorithm_auth; 2198 c = s->cert; 2199 2200 if ((alg_a & SSL_aDSS) && 2201 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2202 idx = SSL_PKEY_DSA_SIGN; 2203 else if (alg_a & SSL_aRSA) { 2204 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2205 idx = SSL_PKEY_RSA_SIGN; 2206 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2207 idx = SSL_PKEY_RSA_ENC; 2208 } else if ((alg_a & SSL_aECDSA) && 2209 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2210 idx = SSL_PKEY_ECC; 2211 if (idx == -1) { 2212 SSLerror(s, ERR_R_INTERNAL_ERROR); 2213 return (NULL); 2214 } 2215 if (pmd) 2216 *pmd = c->pkeys[idx].digest; 2217 return (c->pkeys[idx].privatekey); 2218} 2219 2220DH * 2221ssl_get_auto_dh(SSL *s) 2222{ 2223 CERT_PKEY *cpk; 2224 int keylen; 2225 DH *dhp; 2226 2227 if (s->cert->dh_tmp_auto == 2) { 2228 keylen = 1024; 2229 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2230 keylen = 1024; 2231 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2232 keylen = 3072; 2233 } else { 2234 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2235 return (NULL); 2236 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2237 return (NULL); 2238 keylen = EVP_PKEY_bits(cpk->privatekey); 2239 } 2240 2241 if ((dhp = DH_new()) == NULL) 2242 return (NULL); 2243 2244 dhp->g = BN_new(); 2245 if (dhp->g != NULL) 2246 BN_set_word(dhp->g, 2); 2247 2248 if (keylen >= 8192) 2249 dhp->p = get_rfc3526_prime_8192(NULL); 2250 else if (keylen >= 4096) 2251 dhp->p = get_rfc3526_prime_4096(NULL); 2252 else if (keylen >= 3072) 2253 dhp->p = get_rfc3526_prime_3072(NULL); 2254 else if (keylen >= 2048) 2255 dhp->p = get_rfc3526_prime_2048(NULL); 2256 else if (keylen >= 1536) 2257 dhp->p = get_rfc3526_prime_1536(NULL); 2258 else 2259 dhp->p = get_rfc2409_prime_1024(NULL); 2260 2261 if (dhp->p == NULL || dhp->g == NULL) { 2262 DH_free(dhp); 2263 return (NULL); 2264 } 2265 return (dhp); 2266} 2267 2268void 2269ssl_update_cache(SSL *s, int mode) 2270{ 2271 int i; 2272 2273 /* 2274 * If the session_id_length is 0, we are not supposed to cache it, 2275 * and it would be rather hard to do anyway :-) 2276 */ 2277 if (s->session->session_id_length == 0) 2278 return; 2279 2280 i = s->session_ctx->internal->session_cache_mode; 2281 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2282 || SSL_CTX_add_session(s->session_ctx, s->session)) 2283 && (s->session_ctx->internal->new_session_cb != NULL)) { 2284 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2285 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2286 SSL_SESSION_free(s->session); 2287 } 2288 2289 /* auto flush every 255 connections */ 2290 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2291 ((i & mode) == mode)) { 2292 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2293 s->session_ctx->internal->stats.sess_connect_good : 2294 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2295 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2296 } 2297 } 2298} 2299 2300const SSL_METHOD * 2301SSL_get_ssl_method(SSL *s) 2302{ 2303 return (s->method); 2304} 2305 2306int 2307SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2308{ 2309 int conn = -1; 2310 int ret = 1; 2311 2312 if (s->method != meth) { 2313 if (s->internal->handshake_func != NULL) 2314 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2315 2316 if (s->method->internal->version == meth->internal->version) 2317 s->method = meth; 2318 else { 2319 s->method->internal->ssl_free(s); 2320 s->method = meth; 2321 ret = s->method->internal->ssl_new(s); 2322 } 2323 2324 if (conn == 1) 2325 s->internal->handshake_func = meth->internal->ssl_connect; 2326 else if (conn == 0) 2327 s->internal->handshake_func = meth->internal->ssl_accept; 2328 } 2329 return (ret); 2330} 2331 2332int 2333SSL_get_error(const SSL *s, int i) 2334{ 2335 int reason; 2336 unsigned long l; 2337 BIO *bio; 2338 2339 if (i > 0) 2340 return (SSL_ERROR_NONE); 2341 2342 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2343 * etc, where we do encode the error */ 2344 if ((l = ERR_peek_error()) != 0) { 2345 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2346 return (SSL_ERROR_SYSCALL); 2347 else 2348 return (SSL_ERROR_SSL); 2349 } 2350 2351 if ((i < 0) && SSL_want_read(s)) { 2352 bio = SSL_get_rbio(s); 2353 if (BIO_should_read(bio)) { 2354 return (SSL_ERROR_WANT_READ); 2355 } else if (BIO_should_write(bio)) { 2356 /* 2357 * This one doesn't make too much sense... We never 2358 * try to write to the rbio, and an application 2359 * program where rbio and wbio are separate couldn't 2360 * even know what it should wait for. However if we 2361 * ever set s->internal->rwstate incorrectly (so that we have 2362 * SSL_want_read(s) instead of SSL_want_write(s)) 2363 * and rbio and wbio *are* the same, this test works 2364 * around that bug; so it might be safer to keep it. 2365 */ 2366 return (SSL_ERROR_WANT_WRITE); 2367 } else if (BIO_should_io_special(bio)) { 2368 reason = BIO_get_retry_reason(bio); 2369 if (reason == BIO_RR_CONNECT) 2370 return (SSL_ERROR_WANT_CONNECT); 2371 else if (reason == BIO_RR_ACCEPT) 2372 return (SSL_ERROR_WANT_ACCEPT); 2373 else 2374 return (SSL_ERROR_SYSCALL); /* unknown */ 2375 } 2376 } 2377 2378 if ((i < 0) && SSL_want_write(s)) { 2379 bio = SSL_get_wbio(s); 2380 if (BIO_should_write(bio)) { 2381 return (SSL_ERROR_WANT_WRITE); 2382 } else if (BIO_should_read(bio)) { 2383 /* 2384 * See above (SSL_want_read(s) with 2385 * BIO_should_write(bio)) 2386 */ 2387 return (SSL_ERROR_WANT_READ); 2388 } else if (BIO_should_io_special(bio)) { 2389 reason = BIO_get_retry_reason(bio); 2390 if (reason == BIO_RR_CONNECT) 2391 return (SSL_ERROR_WANT_CONNECT); 2392 else if (reason == BIO_RR_ACCEPT) 2393 return (SSL_ERROR_WANT_ACCEPT); 2394 else 2395 return (SSL_ERROR_SYSCALL); 2396 } 2397 } 2398 if ((i < 0) && SSL_want_x509_lookup(s)) { 2399 return (SSL_ERROR_WANT_X509_LOOKUP); 2400 } 2401 2402 if (i == 0) { 2403 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2404 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2405 return (SSL_ERROR_ZERO_RETURN); 2406 } 2407 return (SSL_ERROR_SYSCALL); 2408} 2409 2410int 2411SSL_do_handshake(SSL *s) 2412{ 2413 int ret = 1; 2414 2415 if (s->internal->handshake_func == NULL) { 2416 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2417 return (-1); 2418 } 2419 2420 s->method->internal->ssl_renegotiate_check(s); 2421 2422 if (SSL_in_init(s) || SSL_in_before(s)) { 2423 ret = s->internal->handshake_func(s); 2424 } 2425 return (ret); 2426} 2427 2428/* 2429 * For the next 2 functions, SSL_clear() sets shutdown and so 2430 * one of these calls will reset it 2431 */ 2432void 2433SSL_set_accept_state(SSL *s) 2434{ 2435 s->server = 1; 2436 s->internal->shutdown = 0; 2437 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2438 s->internal->handshake_func = s->method->internal->ssl_accept; 2439 /* clear the current cipher */ 2440 ssl_clear_cipher_ctx(s); 2441 ssl_clear_hash_ctx(&s->read_hash); 2442 ssl_clear_hash_ctx(&s->internal->write_hash); 2443} 2444 2445void 2446SSL_set_connect_state(SSL *s) 2447{ 2448 s->server = 0; 2449 s->internal->shutdown = 0; 2450 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2451 s->internal->handshake_func = s->method->internal->ssl_connect; 2452 /* clear the current cipher */ 2453 ssl_clear_cipher_ctx(s); 2454 ssl_clear_hash_ctx(&s->read_hash); 2455 ssl_clear_hash_ctx(&s->internal->write_hash); 2456} 2457 2458int 2459ssl_undefined_function(SSL *s) 2460{ 2461 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2462 return (0); 2463} 2464 2465int 2466ssl_undefined_void_function(void) 2467{ 2468 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2469 return (0); 2470} 2471 2472int 2473ssl_undefined_const_function(const SSL *s) 2474{ 2475 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2476 return (0); 2477} 2478 2479const char * 2480ssl_version_string(int ver) 2481{ 2482 switch (ver) { 2483 case DTLS1_VERSION: 2484 return (SSL_TXT_DTLS1); 2485 case TLS1_VERSION: 2486 return (SSL_TXT_TLSV1); 2487 case TLS1_1_VERSION: 2488 return (SSL_TXT_TLSV1_1); 2489 case TLS1_2_VERSION: 2490 return (SSL_TXT_TLSV1_2); 2491 default: 2492 return ("unknown"); 2493 } 2494} 2495 2496const char * 2497SSL_get_version(const SSL *s) 2498{ 2499 return ssl_version_string(s->version); 2500} 2501 2502SSL * 2503SSL_dup(SSL *s) 2504{ 2505 STACK_OF(X509_NAME) *sk; 2506 X509_NAME *xn; 2507 SSL *ret; 2508 int i; 2509 2510 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2511 return (NULL); 2512 2513 ret->version = s->version; 2514 ret->internal->type = s->internal->type; 2515 ret->method = s->method; 2516 2517 if (s->session != NULL) { 2518 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2519 SSL_copy_session_id(ret, s); 2520 } else { 2521 /* 2522 * No session has been established yet, so we have to expect 2523 * that s->cert or ret->cert will be changed later -- 2524 * they should not both point to the same object, 2525 * and thus we can't use SSL_copy_session_id. 2526 */ 2527 2528 ret->method->internal->ssl_free(ret); 2529 ret->method = s->method; 2530 ret->method->internal->ssl_new(ret); 2531 2532 if (s->cert != NULL) { 2533 ssl_cert_free(ret->cert); 2534 ret->cert = ssl_cert_dup(s->cert); 2535 if (ret->cert == NULL) 2536 goto err; 2537 } 2538 2539 SSL_set_session_id_context(ret, 2540 s->sid_ctx, s->sid_ctx_length); 2541 } 2542 2543 ret->internal->options = s->internal->options; 2544 ret->internal->mode = s->internal->mode; 2545 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2546 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2547 ret->internal->msg_callback = s->internal->msg_callback; 2548 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2549 SSL_set_verify(ret, SSL_get_verify_mode(s), 2550 SSL_get_verify_callback(s)); 2551 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2552 ret->internal->generate_session_id = s->internal->generate_session_id; 2553 2554 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2555 2556 ret->internal->debug = s->internal->debug; 2557 2558 /* copy app data, a little dangerous perhaps */ 2559 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2560 &ret->internal->ex_data, &s->internal->ex_data)) 2561 goto err; 2562 2563 /* setup rbio, and wbio */ 2564 if (s->rbio != NULL) { 2565 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2566 goto err; 2567 } 2568 if (s->wbio != NULL) { 2569 if (s->wbio != s->rbio) { 2570 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2571 goto err; 2572 } else 2573 ret->wbio = ret->rbio; 2574 } 2575 ret->internal->rwstate = s->internal->rwstate; 2576 ret->internal->in_handshake = s->internal->in_handshake; 2577 ret->internal->handshake_func = s->internal->handshake_func; 2578 ret->server = s->server; 2579 ret->internal->renegotiate = s->internal->renegotiate; 2580 ret->internal->new_session = s->internal->new_session; 2581 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2582 ret->internal->shutdown = s->internal->shutdown; 2583 /* SSL_dup does not really work at any state, though */ 2584 S3I(ret)->hs.state = S3I(s)->hs.state; 2585 ret->internal->rstate = s->internal->rstate; 2586 2587 /* 2588 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2589 * ret->init_off 2590 */ 2591 ret->internal->init_num = 0; 2592 2593 ret->internal->hit = s->internal->hit; 2594 2595 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2596 2597 /* dup the cipher_list and cipher_list_by_id stacks */ 2598 if (s->cipher_list != NULL) { 2599 if ((ret->cipher_list = 2600 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2601 goto err; 2602 } 2603 if (s->internal->cipher_list_by_id != NULL) { 2604 if ((ret->internal->cipher_list_by_id = 2605 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2606 goto err; 2607 } 2608 2609 /* Dup the client_CA list */ 2610 if (s->internal->client_CA != NULL) { 2611 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2612 ret->internal->client_CA = sk; 2613 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2614 xn = sk_X509_NAME_value(sk, i); 2615 if (sk_X509_NAME_set(sk, i, 2616 X509_NAME_dup(xn)) == NULL) { 2617 X509_NAME_free(xn); 2618 goto err; 2619 } 2620 } 2621 } 2622 2623 if (0) { 2624err: 2625 if (ret != NULL) 2626 SSL_free(ret); 2627 ret = NULL; 2628 } 2629 return (ret); 2630} 2631 2632void 2633ssl_clear_cipher_ctx(SSL *s) 2634{ 2635 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2636 s->enc_read_ctx = NULL; 2637 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2638 s->internal->enc_write_ctx = NULL; 2639 2640 if (s->internal->aead_read_ctx != NULL) { 2641 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2642 free(s->internal->aead_read_ctx); 2643 s->internal->aead_read_ctx = NULL; 2644 } 2645 if (s->internal->aead_write_ctx != NULL) { 2646 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2647 free(s->internal->aead_write_ctx); 2648 s->internal->aead_write_ctx = NULL; 2649 } 2650 2651} 2652 2653/* Fix this function so that it takes an optional type parameter */ 2654X509 * 2655SSL_get_certificate(const SSL *s) 2656{ 2657 if (s->cert != NULL) 2658 return (s->cert->key->x509); 2659 else 2660 return (NULL); 2661} 2662 2663/* Fix this function so that it takes an optional type parameter */ 2664EVP_PKEY * 2665SSL_get_privatekey(SSL *s) 2666{ 2667 if (s->cert != NULL) 2668 return (s->cert->key->privatekey); 2669 else 2670 return (NULL); 2671} 2672 2673const SSL_CIPHER * 2674SSL_get_current_cipher(const SSL *s) 2675{ 2676 if ((s->session != NULL) && (s->session->cipher != NULL)) 2677 return (s->session->cipher); 2678 return (NULL); 2679} 2680const void * 2681SSL_get_current_compression(SSL *s) 2682{ 2683 return (NULL); 2684} 2685 2686const void * 2687SSL_get_current_expansion(SSL *s) 2688{ 2689 return (NULL); 2690} 2691 2692int 2693ssl_init_wbio_buffer(SSL *s, int push) 2694{ 2695 BIO *bbio; 2696 2697 if (s->bbio == NULL) { 2698 bbio = BIO_new(BIO_f_buffer()); 2699 if (bbio == NULL) 2700 return (0); 2701 s->bbio = bbio; 2702 } else { 2703 bbio = s->bbio; 2704 if (s->bbio == s->wbio) 2705 s->wbio = BIO_pop(s->wbio); 2706 } 2707 (void)BIO_reset(bbio); 2708/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2709 if (!BIO_set_read_buffer_size(bbio, 1)) { 2710 SSLerror(s, ERR_R_BUF_LIB); 2711 return (0); 2712 } 2713 if (push) { 2714 if (s->wbio != bbio) 2715 s->wbio = BIO_push(bbio, s->wbio); 2716 } else { 2717 if (s->wbio == bbio) 2718 s->wbio = BIO_pop(bbio); 2719 } 2720 return (1); 2721} 2722 2723void 2724ssl_free_wbio_buffer(SSL *s) 2725{ 2726 if (s == NULL) 2727 return; 2728 2729 if (s->bbio == NULL) 2730 return; 2731 2732 if (s->bbio == s->wbio) { 2733 /* remove buffering */ 2734 s->wbio = BIO_pop(s->wbio); 2735 } 2736 BIO_free(s->bbio); 2737 s->bbio = NULL; 2738} 2739 2740void 2741SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2742{ 2743 ctx->internal->quiet_shutdown = mode; 2744} 2745 2746int 2747SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2748{ 2749 return (ctx->internal->quiet_shutdown); 2750} 2751 2752void 2753SSL_set_quiet_shutdown(SSL *s, int mode) 2754{ 2755 s->internal->quiet_shutdown = mode; 2756} 2757 2758int 2759SSL_get_quiet_shutdown(const SSL *s) 2760{ 2761 return (s->internal->quiet_shutdown); 2762} 2763 2764void 2765SSL_set_shutdown(SSL *s, int mode) 2766{ 2767 s->internal->shutdown = mode; 2768} 2769 2770int 2771SSL_get_shutdown(const SSL *s) 2772{ 2773 return (s->internal->shutdown); 2774} 2775 2776int 2777SSL_version(const SSL *s) 2778{ 2779 return (s->version); 2780} 2781 2782SSL_CTX * 2783SSL_get_SSL_CTX(const SSL *ssl) 2784{ 2785 return (ssl->ctx); 2786} 2787 2788SSL_CTX * 2789SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2790{ 2791 CERT *ocert = ssl->cert; 2792 2793 if (ssl->ctx == ctx) 2794 return (ssl->ctx); 2795 if (ctx == NULL) 2796 ctx = ssl->initial_ctx; 2797 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2798 if (ocert != NULL) { 2799 int i; 2800 /* Copy negotiated digests from original certificate. */ 2801 for (i = 0; i < SSL_PKEY_NUM; i++) 2802 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2803 ssl_cert_free(ocert); 2804 } 2805 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2806 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2807 ssl->ctx = ctx; 2808 return (ssl->ctx); 2809} 2810 2811int 2812SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2813{ 2814 return (X509_STORE_set_default_paths(ctx->cert_store)); 2815} 2816 2817int 2818SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2819 const char *CApath) 2820{ 2821 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2822} 2823 2824int 2825SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2826{ 2827 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2828} 2829 2830void 2831SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2832{ 2833 ssl->internal->info_callback = cb; 2834} 2835 2836void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2837{ 2838 return (ssl->internal->info_callback); 2839} 2840 2841int 2842SSL_state(const SSL *ssl) 2843{ 2844 return (S3I(ssl)->hs.state); 2845} 2846 2847void 2848SSL_set_state(SSL *ssl, int state) 2849{ 2850 S3I(ssl)->hs.state = state; 2851} 2852 2853void 2854SSL_set_verify_result(SSL *ssl, long arg) 2855{ 2856 ssl->verify_result = arg; 2857} 2858 2859long 2860SSL_get_verify_result(const SSL *ssl) 2861{ 2862 return (ssl->verify_result); 2863} 2864 2865int 2866SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2867 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2868{ 2869 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2870 new_func, dup_func, free_func)); 2871} 2872 2873int 2874SSL_set_ex_data(SSL *s, int idx, void *arg) 2875{ 2876 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2877} 2878 2879void * 2880SSL_get_ex_data(const SSL *s, int idx) 2881{ 2882 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2883} 2884 2885int 2886SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2887 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2888{ 2889 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2890 new_func, dup_func, free_func)); 2891} 2892 2893int 2894SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2895{ 2896 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2897} 2898 2899void * 2900SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2901{ 2902 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2903} 2904 2905int 2906ssl_ok(SSL *s) 2907{ 2908 return (1); 2909} 2910 2911X509_STORE * 2912SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2913{ 2914 return (ctx->cert_store); 2915} 2916 2917void 2918SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2919{ 2920 X509_STORE_free(ctx->cert_store); 2921 ctx->cert_store = store; 2922} 2923 2924int 2925SSL_want(const SSL *s) 2926{ 2927 return (s->internal->rwstate); 2928} 2929 2930void 2931SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2932 int keylength)) 2933{ 2934 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2935} 2936 2937void 2938SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2939 int keylength)) 2940{ 2941 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2942} 2943 2944void 2945SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2946 int keylength)) 2947{ 2948 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2949} 2950 2951void 2952SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2953 int keylength)) 2954{ 2955 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2956} 2957 2958void 2959SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2960 int is_export, int keylength)) 2961{ 2962 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2963 (void (*)(void))ecdh); 2964} 2965 2966void 2967SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2968 int keylength)) 2969{ 2970 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2971} 2972 2973 2974void 2975SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2976 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2977{ 2978 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2979 (void (*)(void))cb); 2980} 2981 2982void 2983SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2984 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2985{ 2986 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2987} 2988 2989void 2990ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2991{ 2992 if (*hash) 2993 EVP_MD_CTX_destroy(*hash); 2994 *hash = NULL; 2995} 2996 2997void 2998SSL_set_debug(SSL *s, int debug) 2999{ 3000 s->internal->debug = debug; 3001} 3002 3003int 3004SSL_cache_hit(SSL *s) 3005{ 3006 return (s->internal->hit); 3007} 3008 3009int 3010SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3011{ 3012 return ssl_version_set_min(ctx->method, version, 3013 ctx->internal->max_version, &ctx->internal->min_version); 3014} 3015 3016int 3017SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3018{ 3019 return ssl_version_set_max(ctx->method, version, 3020 ctx->internal->min_version, &ctx->internal->max_version); 3021} 3022 3023int 3024SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3025{ 3026 return ssl_version_set_min(ssl->method, version, 3027 ssl->internal->max_version, &ssl->internal->min_version); 3028} 3029 3030int 3031SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3032{ 3033 return ssl_version_set_max(ssl->method, version, 3034 ssl->internal->min_version, &ssl->internal->max_version); 3035} 3036 3037static int 3038ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3039{ 3040 SSL_CIPHER const *a = a_; 3041 SSL_CIPHER const *b = b_; 3042 return ssl_cipher_id_cmp(a, b); 3043} 3044 3045SSL_CIPHER * 3046OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3047{ 3048 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3049 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3050} 3051