ssl_lib.c revision 1.171
1/* $OpenBSD: ssl_lib.c,v 1.171 2017/10/10 16:51:38 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 472int 473SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 474{ 475 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 476} 477 478int 479SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 480{ 481 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 482} 483 484void 485SSL_free(SSL *s) 486{ 487 int i; 488 489 if (s == NULL) 490 return; 491 492 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 493 if (i > 0) 494 return; 495 496 X509_VERIFY_PARAM_free(s->param); 497 498 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 499 500 if (s->bbio != NULL) { 501 /* If the buffering BIO is in place, pop it off */ 502 if (s->bbio == s->wbio) { 503 s->wbio = BIO_pop(s->wbio); 504 } 505 BIO_free(s->bbio); 506 s->bbio = NULL; 507 } 508 509 if (s->rbio != s->wbio) 510 BIO_free_all(s->rbio); 511 BIO_free_all(s->wbio); 512 513 BUF_MEM_free(s->internal->init_buf); 514 515 /* add extra stuff */ 516 sk_SSL_CIPHER_free(s->cipher_list); 517 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 518 519 /* Make the next call work :-) */ 520 if (s->session != NULL) { 521 ssl_clear_bad_session(s); 522 SSL_SESSION_free(s->session); 523 } 524 525 ssl_clear_cipher_ctx(s); 526 ssl_clear_hash_ctx(&s->read_hash); 527 ssl_clear_hash_ctx(&s->internal->write_hash); 528 529 ssl_cert_free(s->cert); 530 531 free(s->tlsext_hostname); 532 SSL_CTX_free(s->initial_ctx); 533 534 free(s->internal->tlsext_ecpointformatlist); 535 free(s->internal->tlsext_supportedgroups); 536 537 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 538 X509_EXTENSION_free); 539 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 540 free(s->internal->tlsext_ocsp_resp); 541 542 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 543 544 if (s->method != NULL) 545 s->method->internal->ssl_free(s); 546 547 SSL_CTX_free(s->ctx); 548 549 free(s->internal->alpn_client_proto_list); 550 551#ifndef OPENSSL_NO_SRTP 552 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 553#endif 554 555 free(s->internal); 556 free(s); 557} 558 559void 560SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 561{ 562 /* If the output buffering BIO is still in place, remove it */ 563 if (s->bbio != NULL) { 564 if (s->wbio == s->bbio) { 565 s->wbio = s->wbio->next_bio; 566 s->bbio->next_bio = NULL; 567 } 568 } 569 570 if (s->rbio != rbio && s->rbio != s->wbio) 571 BIO_free_all(s->rbio); 572 if (s->wbio != wbio) 573 BIO_free_all(s->wbio); 574 s->rbio = rbio; 575 s->wbio = wbio; 576} 577 578BIO * 579SSL_get_rbio(const SSL *s) 580{ 581 return (s->rbio); 582} 583 584BIO * 585SSL_get_wbio(const SSL *s) 586{ 587 return (s->wbio); 588} 589 590int 591SSL_get_fd(const SSL *s) 592{ 593 return (SSL_get_rfd(s)); 594} 595 596int 597SSL_get_rfd(const SSL *s) 598{ 599 int ret = -1; 600 BIO *b, *r; 601 602 b = SSL_get_rbio(s); 603 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 604 if (r != NULL) 605 BIO_get_fd(r, &ret); 606 return (ret); 607} 608 609int 610SSL_get_wfd(const SSL *s) 611{ 612 int ret = -1; 613 BIO *b, *r; 614 615 b = SSL_get_wbio(s); 616 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 617 if (r != NULL) 618 BIO_get_fd(r, &ret); 619 return (ret); 620} 621 622int 623SSL_set_fd(SSL *s, int fd) 624{ 625 int ret = 0; 626 BIO *bio = NULL; 627 628 bio = BIO_new(BIO_s_socket()); 629 630 if (bio == NULL) { 631 SSLerror(s, ERR_R_BUF_LIB); 632 goto err; 633 } 634 BIO_set_fd(bio, fd, BIO_NOCLOSE); 635 SSL_set_bio(s, bio, bio); 636 ret = 1; 637err: 638 return (ret); 639} 640 641int 642SSL_set_wfd(SSL *s, int fd) 643{ 644 int ret = 0; 645 BIO *bio = NULL; 646 647 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 648 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 649 bio = BIO_new(BIO_s_socket()); 650 651 if (bio == NULL) { 652 SSLerror(s, ERR_R_BUF_LIB); 653 goto err; 654 } 655 BIO_set_fd(bio, fd, BIO_NOCLOSE); 656 SSL_set_bio(s, SSL_get_rbio(s), bio); 657 } else 658 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 659 ret = 1; 660err: 661 return (ret); 662} 663 664int 665SSL_set_rfd(SSL *s, int fd) 666{ 667 int ret = 0; 668 BIO *bio = NULL; 669 670 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 671 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 672 bio = BIO_new(BIO_s_socket()); 673 674 if (bio == NULL) { 675 SSLerror(s, ERR_R_BUF_LIB); 676 goto err; 677 } 678 BIO_set_fd(bio, fd, BIO_NOCLOSE); 679 SSL_set_bio(s, bio, SSL_get_wbio(s)); 680 } else 681 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 682 ret = 1; 683err: 684 return (ret); 685} 686 687 688/* return length of latest Finished message we sent, copy to 'buf' */ 689size_t 690SSL_get_finished(const SSL *s, void *buf, size_t count) 691{ 692 size_t ret = 0; 693 694 if (s->s3 != NULL) { 695 ret = S3I(s)->tmp.finish_md_len; 696 if (count > ret) 697 count = ret; 698 memcpy(buf, S3I(s)->tmp.finish_md, count); 699 } 700 return (ret); 701} 702 703/* return length of latest Finished message we expected, copy to 'buf' */ 704size_t 705SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 706{ 707 size_t ret = 0; 708 709 if (s->s3 != NULL) { 710 ret = S3I(s)->tmp.peer_finish_md_len; 711 if (count > ret) 712 count = ret; 713 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 714 } 715 return (ret); 716} 717 718 719int 720SSL_get_verify_mode(const SSL *s) 721{ 722 return (s->verify_mode); 723} 724 725int 726SSL_get_verify_depth(const SSL *s) 727{ 728 return (X509_VERIFY_PARAM_get_depth(s->param)); 729} 730 731int 732(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 733{ 734 return (s->internal->verify_callback); 735} 736 737int 738SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 739{ 740 return (ctx->verify_mode); 741} 742 743int 744SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 745{ 746 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 747} 748 749int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 750{ 751 return (ctx->internal->default_verify_callback); 752} 753 754void 755SSL_set_verify(SSL *s, int mode, 756 int (*callback)(int ok, X509_STORE_CTX *ctx)) 757{ 758 s->verify_mode = mode; 759 if (callback != NULL) 760 s->internal->verify_callback = callback; 761} 762 763void 764SSL_set_verify_depth(SSL *s, int depth) 765{ 766 X509_VERIFY_PARAM_set_depth(s->param, depth); 767} 768 769void 770SSL_set_read_ahead(SSL *s, int yes) 771{ 772 s->internal->read_ahead = yes; 773} 774 775int 776SSL_get_read_ahead(const SSL *s) 777{ 778 return (s->internal->read_ahead); 779} 780 781int 782SSL_pending(const SSL *s) 783{ 784 /* 785 * SSL_pending cannot work properly if read-ahead is enabled 786 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 787 * and it is impossible to fix since SSL_pending cannot report 788 * errors that may be observed while scanning the new data. 789 * (Note that SSL_pending() is often used as a boolean value, 790 * so we'd better not return -1.) 791 */ 792 return (s->method->internal->ssl_pending(s)); 793} 794 795X509 * 796SSL_get_peer_certificate(const SSL *s) 797{ 798 X509 *r; 799 800 if ((s == NULL) || (s->session == NULL)) 801 r = NULL; 802 else 803 r = s->session->peer; 804 805 if (r == NULL) 806 return (r); 807 808 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 809 810 return (r); 811} 812 813STACK_OF(X509) * 814SSL_get_peer_cert_chain(const SSL *s) 815{ 816 STACK_OF(X509) *r; 817 818 if ((s == NULL) || (s->session == NULL) || 819 (SSI(s)->sess_cert == NULL)) 820 r = NULL; 821 else 822 r = SSI(s)->sess_cert->cert_chain; 823 824 /* 825 * If we are a client, cert_chain includes the peer's own 826 * certificate; 827 * if we are a server, it does not. 828 */ 829 return (r); 830} 831 832/* 833 * Now in theory, since the calling process own 't' it should be safe to 834 * modify. We need to be able to read f without being hassled 835 */ 836void 837SSL_copy_session_id(SSL *t, const SSL *f) 838{ 839 CERT *tmp; 840 841 /* Do we need to to SSL locking? */ 842 SSL_set_session(t, SSL_get_session(f)); 843 844 /* 845 * What if we are setup as SSLv2 but want to talk SSLv3 or 846 * vice-versa. 847 */ 848 if (t->method != f->method) { 849 t->method->internal->ssl_free(t); /* cleanup current */ 850 t->method = f->method; /* change method */ 851 t->method->internal->ssl_new(t); /* setup new */ 852 } 853 854 tmp = t->cert; 855 if (f->cert != NULL) { 856 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 857 t->cert = f->cert; 858 } else 859 t->cert = NULL; 860 ssl_cert_free(tmp); 861 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 862} 863 864/* Fix this so it checks all the valid key/cert options */ 865int 866SSL_CTX_check_private_key(const SSL_CTX *ctx) 867{ 868 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 869 (ctx->internal->cert->key->x509 == NULL)) { 870 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 871 return (0); 872 } 873 if (ctx->internal->cert->key->privatekey == NULL) { 874 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 875 return (0); 876 } 877 return (X509_check_private_key(ctx->internal->cert->key->x509, 878 ctx->internal->cert->key->privatekey)); 879} 880 881/* Fix this function so that it takes an optional type parameter */ 882int 883SSL_check_private_key(const SSL *ssl) 884{ 885 if (ssl == NULL) { 886 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 887 return (0); 888 } 889 if (ssl->cert == NULL) { 890 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 891 return (0); 892 } 893 if (ssl->cert->key->x509 == NULL) { 894 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 895 return (0); 896 } 897 if (ssl->cert->key->privatekey == NULL) { 898 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 899 return (0); 900 } 901 return (X509_check_private_key(ssl->cert->key->x509, 902 ssl->cert->key->privatekey)); 903} 904 905int 906SSL_accept(SSL *s) 907{ 908 if (s->internal->handshake_func == NULL) 909 SSL_set_accept_state(s); /* Not properly initialized yet */ 910 911 return (s->method->internal->ssl_accept(s)); 912} 913 914int 915SSL_connect(SSL *s) 916{ 917 if (s->internal->handshake_func == NULL) 918 SSL_set_connect_state(s); /* Not properly initialized yet */ 919 920 return (s->method->internal->ssl_connect(s)); 921} 922 923long 924SSL_get_default_timeout(const SSL *s) 925{ 926 return (s->method->internal->get_timeout()); 927} 928 929int 930SSL_read(SSL *s, void *buf, int num) 931{ 932 if (s->internal->handshake_func == NULL) { 933 SSLerror(s, SSL_R_UNINITIALIZED); 934 return (-1); 935 } 936 937 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 938 s->internal->rwstate = SSL_NOTHING; 939 return (0); 940 } 941 return (s->method->internal->ssl_read(s, buf, num)); 942} 943 944int 945SSL_peek(SSL *s, void *buf, int num) 946{ 947 if (s->internal->handshake_func == NULL) { 948 SSLerror(s, SSL_R_UNINITIALIZED); 949 return (-1); 950 } 951 952 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 953 return (0); 954 } 955 return (s->method->internal->ssl_peek(s, buf, num)); 956} 957 958int 959SSL_write(SSL *s, const void *buf, int num) 960{ 961 if (s->internal->handshake_func == NULL) { 962 SSLerror(s, SSL_R_UNINITIALIZED); 963 return (-1); 964 } 965 966 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 967 s->internal->rwstate = SSL_NOTHING; 968 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 969 return (-1); 970 } 971 return (s->method->internal->ssl_write(s, buf, num)); 972} 973 974int 975SSL_shutdown(SSL *s) 976{ 977 /* 978 * Note that this function behaves differently from what one might 979 * expect. Return values are 0 for no success (yet), 980 * 1 for success; but calling it once is usually not enough, 981 * even if blocking I/O is used (see ssl3_shutdown). 982 */ 983 984 if (s->internal->handshake_func == NULL) { 985 SSLerror(s, SSL_R_UNINITIALIZED); 986 return (-1); 987 } 988 989 if ((s != NULL) && !SSL_in_init(s)) 990 return (s->method->internal->ssl_shutdown(s)); 991 else 992 return (1); 993} 994 995int 996SSL_renegotiate(SSL *s) 997{ 998 if (s->internal->renegotiate == 0) 999 s->internal->renegotiate = 1; 1000 1001 s->internal->new_session = 1; 1002 1003 return (s->method->internal->ssl_renegotiate(s)); 1004} 1005 1006int 1007SSL_renegotiate_abbreviated(SSL *s) 1008{ 1009 if (s->internal->renegotiate == 0) 1010 s->internal->renegotiate = 1; 1011 1012 s->internal->new_session = 0; 1013 1014 return (s->method->internal->ssl_renegotiate(s)); 1015} 1016 1017int 1018SSL_renegotiate_pending(SSL *s) 1019{ 1020 /* 1021 * Becomes true when negotiation is requested; 1022 * false again once a handshake has finished. 1023 */ 1024 return (s->internal->renegotiate != 0); 1025} 1026 1027long 1028SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1029{ 1030 long l; 1031 1032 switch (cmd) { 1033 case SSL_CTRL_GET_READ_AHEAD: 1034 return (s->internal->read_ahead); 1035 case SSL_CTRL_SET_READ_AHEAD: 1036 l = s->internal->read_ahead; 1037 s->internal->read_ahead = larg; 1038 return (l); 1039 1040 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1041 s->internal->msg_callback_arg = parg; 1042 return (1); 1043 1044 case SSL_CTRL_OPTIONS: 1045 return (s->internal->options|=larg); 1046 case SSL_CTRL_CLEAR_OPTIONS: 1047 return (s->internal->options&=~larg); 1048 case SSL_CTRL_MODE: 1049 return (s->internal->mode|=larg); 1050 case SSL_CTRL_CLEAR_MODE: 1051 return (s->internal->mode &=~larg); 1052 case SSL_CTRL_GET_MAX_CERT_LIST: 1053 return (s->internal->max_cert_list); 1054 case SSL_CTRL_SET_MAX_CERT_LIST: 1055 l = s->internal->max_cert_list; 1056 s->internal->max_cert_list = larg; 1057 return (l); 1058 case SSL_CTRL_SET_MTU: 1059#ifndef OPENSSL_NO_DTLS1 1060 if (larg < (long)dtls1_min_mtu()) 1061 return (0); 1062#endif 1063 if (SSL_IS_DTLS(s)) { 1064 D1I(s)->mtu = larg; 1065 return (larg); 1066 } 1067 return (0); 1068 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1069 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1070 return (0); 1071 s->max_send_fragment = larg; 1072 return (1); 1073 case SSL_CTRL_GET_RI_SUPPORT: 1074 if (s->s3) 1075 return (S3I(s)->send_connection_binding); 1076 else return (0); 1077 default: 1078 if (SSL_IS_DTLS(s)) 1079 return dtls1_ctrl(s, cmd, larg, parg); 1080 return ssl3_ctrl(s, cmd, larg, parg); 1081 } 1082} 1083 1084long 1085SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1086{ 1087 switch (cmd) { 1088 case SSL_CTRL_SET_MSG_CALLBACK: 1089 s->internal->msg_callback = (void (*)(int write_p, int version, 1090 int content_type, const void *buf, size_t len, 1091 SSL *ssl, void *arg))(fp); 1092 return (1); 1093 1094 default: 1095 return (ssl3_callback_ctrl(s, cmd, fp)); 1096 } 1097} 1098 1099struct lhash_st_SSL_SESSION * 1100SSL_CTX_sessions(SSL_CTX *ctx) 1101{ 1102 return (ctx->internal->sessions); 1103} 1104 1105long 1106SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1107{ 1108 long l; 1109 1110 switch (cmd) { 1111 case SSL_CTRL_GET_READ_AHEAD: 1112 return (ctx->internal->read_ahead); 1113 case SSL_CTRL_SET_READ_AHEAD: 1114 l = ctx->internal->read_ahead; 1115 ctx->internal->read_ahead = larg; 1116 return (l); 1117 1118 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1119 ctx->internal->msg_callback_arg = parg; 1120 return (1); 1121 1122 case SSL_CTRL_GET_MAX_CERT_LIST: 1123 return (ctx->internal->max_cert_list); 1124 case SSL_CTRL_SET_MAX_CERT_LIST: 1125 l = ctx->internal->max_cert_list; 1126 ctx->internal->max_cert_list = larg; 1127 return (l); 1128 1129 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1130 l = ctx->internal->session_cache_size; 1131 ctx->internal->session_cache_size = larg; 1132 return (l); 1133 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1134 return (ctx->internal->session_cache_size); 1135 case SSL_CTRL_SET_SESS_CACHE_MODE: 1136 l = ctx->internal->session_cache_mode; 1137 ctx->internal->session_cache_mode = larg; 1138 return (l); 1139 case SSL_CTRL_GET_SESS_CACHE_MODE: 1140 return (ctx->internal->session_cache_mode); 1141 1142 case SSL_CTRL_SESS_NUMBER: 1143 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1144 case SSL_CTRL_SESS_CONNECT: 1145 return (ctx->internal->stats.sess_connect); 1146 case SSL_CTRL_SESS_CONNECT_GOOD: 1147 return (ctx->internal->stats.sess_connect_good); 1148 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1149 return (ctx->internal->stats.sess_connect_renegotiate); 1150 case SSL_CTRL_SESS_ACCEPT: 1151 return (ctx->internal->stats.sess_accept); 1152 case SSL_CTRL_SESS_ACCEPT_GOOD: 1153 return (ctx->internal->stats.sess_accept_good); 1154 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1155 return (ctx->internal->stats.sess_accept_renegotiate); 1156 case SSL_CTRL_SESS_HIT: 1157 return (ctx->internal->stats.sess_hit); 1158 case SSL_CTRL_SESS_CB_HIT: 1159 return (ctx->internal->stats.sess_cb_hit); 1160 case SSL_CTRL_SESS_MISSES: 1161 return (ctx->internal->stats.sess_miss); 1162 case SSL_CTRL_SESS_TIMEOUTS: 1163 return (ctx->internal->stats.sess_timeout); 1164 case SSL_CTRL_SESS_CACHE_FULL: 1165 return (ctx->internal->stats.sess_cache_full); 1166 case SSL_CTRL_OPTIONS: 1167 return (ctx->internal->options|=larg); 1168 case SSL_CTRL_CLEAR_OPTIONS: 1169 return (ctx->internal->options&=~larg); 1170 case SSL_CTRL_MODE: 1171 return (ctx->internal->mode|=larg); 1172 case SSL_CTRL_CLEAR_MODE: 1173 return (ctx->internal->mode&=~larg); 1174 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1175 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1176 return (0); 1177 ctx->internal->max_send_fragment = larg; 1178 return (1); 1179 default: 1180 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1181 } 1182} 1183 1184long 1185SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1186{ 1187 switch (cmd) { 1188 case SSL_CTRL_SET_MSG_CALLBACK: 1189 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1190 int content_type, const void *buf, size_t len, SSL *ssl, 1191 void *arg))(fp); 1192 return (1); 1193 1194 default: 1195 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1196 } 1197} 1198 1199int 1200ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1201{ 1202 long l; 1203 1204 l = a->id - b->id; 1205 if (l == 0L) 1206 return (0); 1207 else 1208 return ((l > 0) ? 1:-1); 1209} 1210 1211int 1212ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1213 const SSL_CIPHER * const *bp) 1214{ 1215 long l; 1216 1217 l = (*ap)->id - (*bp)->id; 1218 if (l == 0L) 1219 return (0); 1220 else 1221 return ((l > 0) ? 1:-1); 1222} 1223 1224/* 1225 * Return a STACK of the ciphers available for the SSL and in order of 1226 * preference. 1227 */ 1228STACK_OF(SSL_CIPHER) * 1229SSL_get_ciphers(const SSL *s) 1230{ 1231 if (s != NULL) { 1232 if (s->cipher_list != NULL) { 1233 return (s->cipher_list); 1234 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1235 return (s->ctx->cipher_list); 1236 } 1237 } 1238 return (NULL); 1239} 1240 1241/* 1242 * Return a STACK of the ciphers available for the SSL and in order of 1243 * algorithm id. 1244 */ 1245STACK_OF(SSL_CIPHER) * 1246ssl_get_ciphers_by_id(SSL *s) 1247{ 1248 if (s != NULL) { 1249 if (s->internal->cipher_list_by_id != NULL) { 1250 return (s->internal->cipher_list_by_id); 1251 } else if ((s->ctx != NULL) && 1252 (s->ctx->internal->cipher_list_by_id != NULL)) { 1253 return (s->ctx->internal->cipher_list_by_id); 1254 } 1255 } 1256 return (NULL); 1257} 1258 1259/* See if we have any ECC cipher suites. */ 1260int 1261ssl_has_ecc_ciphers(SSL *s) 1262{ 1263 STACK_OF(SSL_CIPHER) *ciphers; 1264 unsigned long alg_k, alg_a; 1265 SSL_CIPHER *cipher; 1266 int i; 1267 1268 if (s->version == DTLS1_VERSION) 1269 return 0; 1270 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1271 return 0; 1272 1273 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1274 cipher = sk_SSL_CIPHER_value(ciphers, i); 1275 1276 alg_k = cipher->algorithm_mkey; 1277 alg_a = cipher->algorithm_auth; 1278 1279 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1280 return 1; 1281 } 1282 1283 return 0; 1284} 1285 1286/* The old interface to get the same thing as SSL_get_ciphers(). */ 1287const char * 1288SSL_get_cipher_list(const SSL *s, int n) 1289{ 1290 SSL_CIPHER *c; 1291 STACK_OF(SSL_CIPHER) *sk; 1292 1293 if (s == NULL) 1294 return (NULL); 1295 sk = SSL_get_ciphers(s); 1296 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1297 return (NULL); 1298 c = sk_SSL_CIPHER_value(sk, n); 1299 if (c == NULL) 1300 return (NULL); 1301 return (c->name); 1302} 1303 1304/* Specify the ciphers to be used by default by the SSL_CTX. */ 1305int 1306SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1307{ 1308 STACK_OF(SSL_CIPHER) *sk; 1309 1310 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1311 &ctx->internal->cipher_list_by_id, str); 1312 /* 1313 * ssl_create_cipher_list may return an empty stack if it 1314 * was unable to find a cipher matching the given rule string 1315 * (for example if the rule string specifies a cipher which 1316 * has been disabled). This is not an error as far as 1317 * ssl_create_cipher_list is concerned, and hence 1318 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1319 * updated. 1320 */ 1321 if (sk == NULL) 1322 return (0); 1323 else if (sk_SSL_CIPHER_num(sk) == 0) { 1324 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1325 return (0); 1326 } 1327 return (1); 1328} 1329 1330/* Specify the ciphers to be used by the SSL. */ 1331int 1332SSL_set_cipher_list(SSL *s, const char *str) 1333{ 1334 STACK_OF(SSL_CIPHER) *sk; 1335 1336 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1337 &s->internal->cipher_list_by_id, str); 1338 /* see comment in SSL_CTX_set_cipher_list */ 1339 if (sk == NULL) 1340 return (0); 1341 else if (sk_SSL_CIPHER_num(sk) == 0) { 1342 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1343 return (0); 1344 } 1345 return (1); 1346} 1347 1348/* works well for SSLv2, not so good for SSLv3 */ 1349char * 1350SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1351{ 1352 char *end; 1353 STACK_OF(SSL_CIPHER) *sk; 1354 SSL_CIPHER *c; 1355 size_t curlen = 0; 1356 int i; 1357 1358 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1359 return (NULL); 1360 1361 sk = s->session->ciphers; 1362 if (sk_SSL_CIPHER_num(sk) == 0) 1363 return (NULL); 1364 1365 buf[0] = '\0'; 1366 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1367 c = sk_SSL_CIPHER_value(sk, i); 1368 end = buf + curlen; 1369 if (strlcat(buf, c->name, len) >= len || 1370 (curlen = strlcat(buf, ":", len)) >= len) { 1371 /* remove truncated cipher from list */ 1372 *end = '\0'; 1373 break; 1374 } 1375 } 1376 /* remove trailing colon */ 1377 if ((end = strrchr(buf, ':')) != NULL) 1378 *end = '\0'; 1379 return (buf); 1380} 1381 1382int 1383ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1384 size_t maxlen, size_t *outlen) 1385{ 1386 SSL_CIPHER *cipher; 1387 int ciphers = 0; 1388 CBB cbb; 1389 int i; 1390 1391 *outlen = 0; 1392 1393 if (sk == NULL) 1394 return (0); 1395 1396 if (!CBB_init_fixed(&cbb, p, maxlen)) 1397 goto err; 1398 1399 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1400 cipher = sk_SSL_CIPHER_value(sk, i); 1401 1402 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1403 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1404 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1405 continue; 1406 1407 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher))) 1408 goto err; 1409 1410 ciphers++; 1411 } 1412 1413 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1414 if (ciphers > 0 && !s->internal->renegotiate) { 1415 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1416 goto err; 1417 } 1418 1419 if (!CBB_finish(&cbb, NULL, outlen)) 1420 goto err; 1421 1422 return 1; 1423 1424 err: 1425 CBB_cleanup(&cbb); 1426 1427 return 0; 1428} 1429 1430STACK_OF(SSL_CIPHER) * 1431ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1432{ 1433 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1434 const SSL_CIPHER *cipher; 1435 uint16_t cipher_value, max_version; 1436 unsigned long cipher_id; 1437 1438 if (s->s3 != NULL) 1439 S3I(s)->send_connection_binding = 0; 1440 1441 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1442 SSLerror(s, ERR_R_MALLOC_FAILURE); 1443 goto err; 1444 } 1445 1446 while (CBS_len(cbs) > 0) { 1447 if (!CBS_get_u16(cbs, &cipher_value)) { 1448 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1449 goto err; 1450 } 1451 1452 cipher_id = SSL3_CK_ID | cipher_value; 1453 1454 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1455 /* 1456 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1457 * renegotiating. 1458 */ 1459 if (s->internal->renegotiate) { 1460 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1461 ssl3_send_alert(s, SSL3_AL_FATAL, 1462 SSL_AD_HANDSHAKE_FAILURE); 1463 1464 goto err; 1465 } 1466 S3I(s)->send_connection_binding = 1; 1467 continue; 1468 } 1469 1470 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1471 /* 1472 * TLS_FALLBACK_SCSV indicates that the client 1473 * previously tried a higher protocol version. 1474 * Fail if the current version is an unexpected 1475 * downgrade. 1476 */ 1477 max_version = ssl_max_server_version(s); 1478 if (max_version == 0 || s->version < max_version) { 1479 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1480 if (s->s3 != NULL) 1481 ssl3_send_alert(s, SSL3_AL_FATAL, 1482 SSL_AD_INAPPROPRIATE_FALLBACK); 1483 goto err; 1484 } 1485 continue; 1486 } 1487 1488 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1489 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1490 SSLerror(s, ERR_R_MALLOC_FAILURE); 1491 goto err; 1492 } 1493 } 1494 } 1495 1496 return (ciphers); 1497 1498err: 1499 sk_SSL_CIPHER_free(ciphers); 1500 1501 return (NULL); 1502} 1503 1504 1505/* 1506 * Return a servername extension value if provided in Client Hello, or NULL. 1507 * So far, only host_name types are defined (RFC 3546). 1508 */ 1509const char * 1510SSL_get_servername(const SSL *s, const int type) 1511{ 1512 if (type != TLSEXT_NAMETYPE_host_name) 1513 return (NULL); 1514 1515 return (s->session && !s->tlsext_hostname ? 1516 s->session->tlsext_hostname : 1517 s->tlsext_hostname); 1518} 1519 1520int 1521SSL_get_servername_type(const SSL *s) 1522{ 1523 if (s->session && 1524 (!s->tlsext_hostname ? 1525 s->session->tlsext_hostname : s->tlsext_hostname)) 1526 return (TLSEXT_NAMETYPE_host_name); 1527 return (-1); 1528} 1529 1530/* 1531 * SSL_select_next_proto implements standard protocol selection. It is 1532 * expected that this function is called from the callback set by 1533 * SSL_CTX_set_alpn_select_cb. 1534 * 1535 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1536 * strings. The length byte itself is not included in the length. A byte 1537 * string of length 0 is invalid. No byte string may be truncated. 1538 * 1539 * It returns either: 1540 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1541 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1542 */ 1543int 1544SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1545 const unsigned char *server, unsigned int server_len, 1546 const unsigned char *client, unsigned int client_len) 1547{ 1548 unsigned int i, j; 1549 const unsigned char *result; 1550 int status = OPENSSL_NPN_UNSUPPORTED; 1551 1552 /* 1553 * For each protocol in server preference order, 1554 * see if we support it. 1555 */ 1556 for (i = 0; i < server_len; ) { 1557 for (j = 0; j < client_len; ) { 1558 if (server[i] == client[j] && 1559 memcmp(&server[i + 1], 1560 &client[j + 1], server[i]) == 0) { 1561 /* We found a match */ 1562 result = &server[i]; 1563 status = OPENSSL_NPN_NEGOTIATED; 1564 goto found; 1565 } 1566 j += client[j]; 1567 j++; 1568 } 1569 i += server[i]; 1570 i++; 1571 } 1572 1573 /* There's no overlap between our protocols and the server's list. */ 1574 result = client; 1575 status = OPENSSL_NPN_NO_OVERLAP; 1576 1577found: 1578 *out = (unsigned char *) result + 1; 1579 *outlen = result[0]; 1580 return (status); 1581} 1582 1583/* SSL_get0_next_proto_negotiated is deprecated. */ 1584void 1585SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1586 unsigned *len) 1587{ 1588 *data = NULL; 1589 *len = 0; 1590} 1591 1592/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1593void 1594SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1595 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1596{ 1597} 1598 1599/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1600void 1601SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1602 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1603 unsigned int inlen, void *arg), void *arg) 1604{ 1605} 1606 1607/* 1608 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1609 * protocols, which must be in wire-format (i.e. a series of non-empty, 1610 * 8-bit length-prefixed strings). Returns 0 on success. 1611 */ 1612int 1613SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1614 unsigned int protos_len) 1615{ 1616 int failed = 1; 1617 1618 if (protos == NULL || protos_len == 0) 1619 goto err; 1620 1621 free(ctx->internal->alpn_client_proto_list); 1622 ctx->internal->alpn_client_proto_list = NULL; 1623 ctx->internal->alpn_client_proto_list_len = 0; 1624 1625 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1626 == NULL) 1627 goto err; 1628 ctx->internal->alpn_client_proto_list_len = protos_len; 1629 1630 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1631 1632 failed = 0; 1633 1634 err: 1635 /* NOTE: Return values are the reverse of what you expect. */ 1636 return (failed); 1637} 1638 1639/* 1640 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1641 * protocols, which must be in wire-format (i.e. a series of non-empty, 1642 * 8-bit length-prefixed strings). Returns 0 on success. 1643 */ 1644int 1645SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1646 unsigned int protos_len) 1647{ 1648 int failed = 1; 1649 1650 if (protos == NULL || protos_len == 0) 1651 goto err; 1652 1653 free(ssl->internal->alpn_client_proto_list); 1654 ssl->internal->alpn_client_proto_list = NULL; 1655 ssl->internal->alpn_client_proto_list_len = 0; 1656 1657 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1658 == NULL) 1659 goto err; 1660 ssl->internal->alpn_client_proto_list_len = protos_len; 1661 1662 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1663 1664 failed = 0; 1665 1666 err: 1667 /* NOTE: Return values are the reverse of what you expect. */ 1668 return (failed); 1669} 1670 1671/* 1672 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1673 * ClientHello processing in order to select an ALPN protocol from the 1674 * client's list of offered protocols. 1675 */ 1676void 1677SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1678 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1679 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1680{ 1681 ctx->internal->alpn_select_cb = cb; 1682 ctx->internal->alpn_select_cb_arg = arg; 1683} 1684 1685/* 1686 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1687 * it sets data to point to len bytes of protocol name (not including the 1688 * leading length-prefix byte). If the server didn't respond with* a negotiated 1689 * protocol then len will be zero. 1690 */ 1691void 1692SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1693 unsigned *len) 1694{ 1695 *data = NULL; 1696 *len = 0; 1697 1698 if (ssl->s3 != NULL) { 1699 *data = ssl->s3->internal->alpn_selected; 1700 *len = ssl->s3->internal->alpn_selected_len; 1701 } 1702} 1703 1704int 1705SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1706 const char *label, size_t llen, const unsigned char *p, size_t plen, 1707 int use_context) 1708{ 1709 return (tls1_export_keying_material(s, out, olen, 1710 label, llen, p, plen, use_context)); 1711} 1712 1713static unsigned long 1714ssl_session_hash(const SSL_SESSION *a) 1715{ 1716 unsigned long l; 1717 1718 l = (unsigned long) 1719 ((unsigned int) a->session_id[0] )| 1720 ((unsigned int) a->session_id[1]<< 8L)| 1721 ((unsigned long)a->session_id[2]<<16L)| 1722 ((unsigned long)a->session_id[3]<<24L); 1723 return (l); 1724} 1725 1726/* 1727 * NB: If this function (or indeed the hash function which uses a sort of 1728 * coarser function than this one) is changed, ensure 1729 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1730 * able to construct an SSL_SESSION that will collide with any existing session 1731 * with a matching session ID. 1732 */ 1733static int 1734ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1735{ 1736 if (a->ssl_version != b->ssl_version) 1737 return (1); 1738 if (a->session_id_length != b->session_id_length) 1739 return (1); 1740 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1741 return (1); 1742 return (0); 1743} 1744 1745/* 1746 * These wrapper functions should remain rather than redeclaring 1747 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1748 * variable. The reason is that the functions aren't static, they're exposed via 1749 * ssl.h. 1750 */ 1751static unsigned long 1752ssl_session_LHASH_HASH(const void *arg) 1753{ 1754 const SSL_SESSION *a = arg; 1755 1756 return ssl_session_hash(a); 1757} 1758 1759static int 1760ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1761{ 1762 const SSL_SESSION *a = arg1; 1763 const SSL_SESSION *b = arg2; 1764 1765 return ssl_session_cmp(a, b); 1766} 1767 1768SSL_CTX * 1769SSL_CTX_new(const SSL_METHOD *meth) 1770{ 1771 SSL_CTX *ret; 1772 1773 if (meth == NULL) { 1774 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1775 return (NULL); 1776 } 1777 1778 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1779 SSLerrorx(ERR_R_MALLOC_FAILURE); 1780 return (NULL); 1781 } 1782 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1783 free(ret); 1784 SSLerrorx(ERR_R_MALLOC_FAILURE); 1785 return (NULL); 1786 } 1787 1788 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1789 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1790 goto err; 1791 } 1792 1793 ret->method = meth; 1794 ret->internal->min_version = meth->internal->min_version; 1795 ret->internal->max_version = meth->internal->max_version; 1796 1797 ret->cert_store = NULL; 1798 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1799 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1800 ret->internal->session_cache_head = NULL; 1801 ret->internal->session_cache_tail = NULL; 1802 1803 /* We take the system default */ 1804 ret->session_timeout = meth->internal->get_timeout(); 1805 1806 ret->internal->new_session_cb = 0; 1807 ret->internal->remove_session_cb = 0; 1808 ret->internal->get_session_cb = 0; 1809 ret->internal->generate_session_id = 0; 1810 1811 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1812 1813 ret->references = 1; 1814 ret->internal->quiet_shutdown = 0; 1815 1816 ret->internal->info_callback = NULL; 1817 1818 ret->internal->app_verify_callback = 0; 1819 ret->internal->app_verify_arg = NULL; 1820 1821 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1822 ret->internal->read_ahead = 0; 1823 ret->internal->msg_callback = 0; 1824 ret->internal->msg_callback_arg = NULL; 1825 ret->verify_mode = SSL_VERIFY_NONE; 1826 ret->sid_ctx_length = 0; 1827 ret->internal->default_verify_callback = NULL; 1828 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1829 goto err; 1830 1831 ret->default_passwd_callback = 0; 1832 ret->default_passwd_callback_userdata = NULL; 1833 ret->internal->client_cert_cb = 0; 1834 ret->internal->app_gen_cookie_cb = 0; 1835 ret->internal->app_verify_cookie_cb = 0; 1836 1837 ret->internal->sessions = lh_SSL_SESSION_new(); 1838 if (ret->internal->sessions == NULL) 1839 goto err; 1840 ret->cert_store = X509_STORE_new(); 1841 if (ret->cert_store == NULL) 1842 goto err; 1843 1844 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1845 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1846 if (ret->cipher_list == NULL || 1847 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1848 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1849 goto err2; 1850 } 1851 1852 ret->param = X509_VERIFY_PARAM_new(); 1853 if (!ret->param) 1854 goto err; 1855 1856 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1857 goto err; 1858 1859 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1860 1861 ret->extra_certs = NULL; 1862 1863 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1864 1865 ret->internal->tlsext_servername_callback = 0; 1866 ret->internal->tlsext_servername_arg = NULL; 1867 1868 /* Setup RFC4507 ticket keys */ 1869 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1870 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1871 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1872 1873 ret->internal->tlsext_status_cb = 0; 1874 ret->internal->tlsext_status_arg = NULL; 1875 1876#ifndef OPENSSL_NO_ENGINE 1877 ret->internal->client_cert_engine = NULL; 1878#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1879#define eng_strx(x) #x 1880#define eng_str(x) eng_strx(x) 1881 /* Use specific client engine automatically... ignore errors */ 1882 { 1883 ENGINE *eng; 1884 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1885 if (!eng) { 1886 ERR_clear_error(); 1887 ENGINE_load_builtin_engines(); 1888 eng = ENGINE_by_id(eng_str( 1889 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1890 } 1891 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1892 ERR_clear_error(); 1893 } 1894#endif 1895#endif 1896 /* 1897 * Default is to connect to non-RI servers. When RI is more widely 1898 * deployed might change this. 1899 */ 1900 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1901 1902 return (ret); 1903err: 1904 SSLerrorx(ERR_R_MALLOC_FAILURE); 1905err2: 1906 SSL_CTX_free(ret); 1907 return (NULL); 1908} 1909 1910void 1911SSL_CTX_free(SSL_CTX *ctx) 1912{ 1913 int i; 1914 1915 if (ctx == NULL) 1916 return; 1917 1918 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1919 if (i > 0) 1920 return; 1921 1922 X509_VERIFY_PARAM_free(ctx->param); 1923 1924 /* 1925 * Free internal session cache. However: the remove_cb() may reference 1926 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1927 * after the sessions were flushed. 1928 * As the ex_data handling routines might also touch the session cache, 1929 * the most secure solution seems to be: empty (flush) the cache, then 1930 * free ex_data, then finally free the cache. 1931 * (See ticket [openssl.org #212].) 1932 */ 1933 if (ctx->internal->sessions != NULL) 1934 SSL_CTX_flush_sessions(ctx, 0); 1935 1936 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1937 1938 lh_SSL_SESSION_free(ctx->internal->sessions); 1939 1940 X509_STORE_free(ctx->cert_store); 1941 sk_SSL_CIPHER_free(ctx->cipher_list); 1942 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1943 ssl_cert_free(ctx->internal->cert); 1944 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1945 sk_X509_pop_free(ctx->extra_certs, X509_free); 1946 1947#ifndef OPENSSL_NO_SRTP 1948 if (ctx->internal->srtp_profiles) 1949 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1950#endif 1951 1952#ifndef OPENSSL_NO_ENGINE 1953 if (ctx->internal->client_cert_engine) 1954 ENGINE_finish(ctx->internal->client_cert_engine); 1955#endif 1956 1957 free(ctx->internal->tlsext_ecpointformatlist); 1958 free(ctx->internal->tlsext_supportedgroups); 1959 1960 free(ctx->internal->alpn_client_proto_list); 1961 1962 free(ctx->internal); 1963 free(ctx); 1964} 1965 1966void 1967SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1968{ 1969 ctx->default_passwd_callback = cb; 1970} 1971 1972void 1973SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1974{ 1975 ctx->default_passwd_callback_userdata = u; 1976} 1977 1978void 1979SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1980 void *), void *arg) 1981{ 1982 ctx->internal->app_verify_callback = cb; 1983 ctx->internal->app_verify_arg = arg; 1984} 1985 1986void 1987SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1988{ 1989 ctx->verify_mode = mode; 1990 ctx->internal->default_verify_callback = cb; 1991} 1992 1993void 1994SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1995{ 1996 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1997} 1998 1999void 2000ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2001{ 2002 int rsa_enc, rsa_sign, dh_tmp; 2003 int have_ecc_cert; 2004 unsigned long mask_k, mask_a; 2005 X509 *x = NULL; 2006 CERT_PKEY *cpk; 2007 2008 if (c == NULL) 2009 return; 2010 2011 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2012 c->dh_tmp_auto != 0); 2013 2014 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2015 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2016 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2017 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2018 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2019 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2020 2021 mask_k = 0; 2022 mask_a = 0; 2023 2024 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2025 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2026 mask_k |= SSL_kGOST; 2027 mask_a |= SSL_aGOST01; 2028 } 2029 2030 if (rsa_enc) 2031 mask_k |= SSL_kRSA; 2032 2033 if (dh_tmp) 2034 mask_k |= SSL_kDHE; 2035 2036 if (rsa_enc || rsa_sign) 2037 mask_a |= SSL_aRSA; 2038 2039 mask_a |= SSL_aNULL; 2040 2041 /* 2042 * An ECC certificate may be usable for ECDH and/or 2043 * ECDSA cipher suites depending on the key usage extension. 2044 */ 2045 if (have_ecc_cert) { 2046 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2047 2048 /* This call populates extension flags (ex_flags). */ 2049 X509_check_purpose(x, -1, 0); 2050 2051 /* Key usage, if present, must allow signing. */ 2052 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2053 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2054 mask_a |= SSL_aECDSA; 2055 } 2056 2057 mask_k |= SSL_kECDHE; 2058 2059 c->mask_k = mask_k; 2060 c->mask_a = mask_a; 2061 c->valid = 1; 2062} 2063 2064/* See if this handshake is using an ECC cipher suite. */ 2065int 2066ssl_using_ecc_cipher(SSL *s) 2067{ 2068 unsigned long alg_a, alg_k; 2069 2070 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2071 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2072 2073 return SSI(s)->tlsext_ecpointformatlist != NULL && 2074 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2075 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2076} 2077 2078int 2079ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2080{ 2081 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2082 unsigned long alg_a; 2083 2084 alg_a = cs->algorithm_auth; 2085 2086 if (alg_a & SSL_aECDSA) { 2087 /* This call populates extension flags (ex_flags). */ 2088 X509_check_purpose(x, -1, 0); 2089 2090 /* Key usage, if present, must allow signing. */ 2091 if ((x->ex_flags & EXFLAG_KUSAGE) && 2092 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2093 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2094 return (0); 2095 } 2096 } 2097 2098 return (1); 2099} 2100 2101CERT_PKEY * 2102ssl_get_server_send_pkey(const SSL *s) 2103{ 2104 unsigned long alg_a; 2105 CERT *c; 2106 int i; 2107 2108 c = s->cert; 2109 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2110 2111 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2112 2113 if (alg_a & SSL_aECDSA) { 2114 i = SSL_PKEY_ECC; 2115 } else if (alg_a & SSL_aRSA) { 2116 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2117 i = SSL_PKEY_RSA_SIGN; 2118 else 2119 i = SSL_PKEY_RSA_ENC; 2120 } else if (alg_a & SSL_aGOST01) { 2121 i = SSL_PKEY_GOST01; 2122 } else { /* if (alg_a & SSL_aNULL) */ 2123 SSLerror(s, ERR_R_INTERNAL_ERROR); 2124 return (NULL); 2125 } 2126 2127 return (c->pkeys + i); 2128} 2129 2130X509 * 2131ssl_get_server_send_cert(const SSL *s) 2132{ 2133 CERT_PKEY *cpk; 2134 2135 cpk = ssl_get_server_send_pkey(s); 2136 if (!cpk) 2137 return (NULL); 2138 return (cpk->x509); 2139} 2140 2141EVP_PKEY * 2142ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2143{ 2144 unsigned long alg_a; 2145 CERT *c; 2146 int idx = -1; 2147 2148 alg_a = cipher->algorithm_auth; 2149 c = s->cert; 2150 2151 if (alg_a & SSL_aRSA) { 2152 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2153 idx = SSL_PKEY_RSA_SIGN; 2154 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2155 idx = SSL_PKEY_RSA_ENC; 2156 } else if ((alg_a & SSL_aECDSA) && 2157 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2158 idx = SSL_PKEY_ECC; 2159 if (idx == -1) { 2160 SSLerror(s, ERR_R_INTERNAL_ERROR); 2161 return (NULL); 2162 } 2163 if (pmd) 2164 *pmd = c->pkeys[idx].digest; 2165 return (c->pkeys[idx].privatekey); 2166} 2167 2168DH * 2169ssl_get_auto_dh(SSL *s) 2170{ 2171 CERT_PKEY *cpk; 2172 int keylen; 2173 DH *dhp; 2174 2175 if (s->cert->dh_tmp_auto == 2) { 2176 keylen = 1024; 2177 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2178 keylen = 1024; 2179 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2180 keylen = 3072; 2181 } else { 2182 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2183 return (NULL); 2184 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2185 return (NULL); 2186 keylen = EVP_PKEY_bits(cpk->privatekey); 2187 } 2188 2189 if ((dhp = DH_new()) == NULL) 2190 return (NULL); 2191 2192 dhp->g = BN_new(); 2193 if (dhp->g != NULL) 2194 BN_set_word(dhp->g, 2); 2195 2196 if (keylen >= 8192) 2197 dhp->p = get_rfc3526_prime_8192(NULL); 2198 else if (keylen >= 4096) 2199 dhp->p = get_rfc3526_prime_4096(NULL); 2200 else if (keylen >= 3072) 2201 dhp->p = get_rfc3526_prime_3072(NULL); 2202 else if (keylen >= 2048) 2203 dhp->p = get_rfc3526_prime_2048(NULL); 2204 else if (keylen >= 1536) 2205 dhp->p = get_rfc3526_prime_1536(NULL); 2206 else 2207 dhp->p = get_rfc2409_prime_1024(NULL); 2208 2209 if (dhp->p == NULL || dhp->g == NULL) { 2210 DH_free(dhp); 2211 return (NULL); 2212 } 2213 return (dhp); 2214} 2215 2216void 2217ssl_update_cache(SSL *s, int mode) 2218{ 2219 int i; 2220 2221 /* 2222 * If the session_id_length is 0, we are not supposed to cache it, 2223 * and it would be rather hard to do anyway :-) 2224 */ 2225 if (s->session->session_id_length == 0) 2226 return; 2227 2228 i = s->session_ctx->internal->session_cache_mode; 2229 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2230 || SSL_CTX_add_session(s->session_ctx, s->session)) 2231 && (s->session_ctx->internal->new_session_cb != NULL)) { 2232 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2233 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2234 SSL_SESSION_free(s->session); 2235 } 2236 2237 /* auto flush every 255 connections */ 2238 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2239 ((i & mode) == mode)) { 2240 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2241 s->session_ctx->internal->stats.sess_connect_good : 2242 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2243 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2244 } 2245 } 2246} 2247 2248const SSL_METHOD * 2249SSL_get_ssl_method(SSL *s) 2250{ 2251 return (s->method); 2252} 2253 2254int 2255SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2256{ 2257 int conn = -1; 2258 int ret = 1; 2259 2260 if (s->method != meth) { 2261 if (s->internal->handshake_func != NULL) 2262 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2263 2264 if (s->method->internal->version == meth->internal->version) 2265 s->method = meth; 2266 else { 2267 s->method->internal->ssl_free(s); 2268 s->method = meth; 2269 ret = s->method->internal->ssl_new(s); 2270 } 2271 2272 if (conn == 1) 2273 s->internal->handshake_func = meth->internal->ssl_connect; 2274 else if (conn == 0) 2275 s->internal->handshake_func = meth->internal->ssl_accept; 2276 } 2277 return (ret); 2278} 2279 2280int 2281SSL_get_error(const SSL *s, int i) 2282{ 2283 int reason; 2284 unsigned long l; 2285 BIO *bio; 2286 2287 if (i > 0) 2288 return (SSL_ERROR_NONE); 2289 2290 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2291 * etc, where we do encode the error */ 2292 if ((l = ERR_peek_error()) != 0) { 2293 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2294 return (SSL_ERROR_SYSCALL); 2295 else 2296 return (SSL_ERROR_SSL); 2297 } 2298 2299 if ((i < 0) && SSL_want_read(s)) { 2300 bio = SSL_get_rbio(s); 2301 if (BIO_should_read(bio)) { 2302 return (SSL_ERROR_WANT_READ); 2303 } else if (BIO_should_write(bio)) { 2304 /* 2305 * This one doesn't make too much sense... We never 2306 * try to write to the rbio, and an application 2307 * program where rbio and wbio are separate couldn't 2308 * even know what it should wait for. However if we 2309 * ever set s->internal->rwstate incorrectly (so that we have 2310 * SSL_want_read(s) instead of SSL_want_write(s)) 2311 * and rbio and wbio *are* the same, this test works 2312 * around that bug; so it might be safer to keep it. 2313 */ 2314 return (SSL_ERROR_WANT_WRITE); 2315 } else if (BIO_should_io_special(bio)) { 2316 reason = BIO_get_retry_reason(bio); 2317 if (reason == BIO_RR_CONNECT) 2318 return (SSL_ERROR_WANT_CONNECT); 2319 else if (reason == BIO_RR_ACCEPT) 2320 return (SSL_ERROR_WANT_ACCEPT); 2321 else 2322 return (SSL_ERROR_SYSCALL); /* unknown */ 2323 } 2324 } 2325 2326 if ((i < 0) && SSL_want_write(s)) { 2327 bio = SSL_get_wbio(s); 2328 if (BIO_should_write(bio)) { 2329 return (SSL_ERROR_WANT_WRITE); 2330 } else if (BIO_should_read(bio)) { 2331 /* 2332 * See above (SSL_want_read(s) with 2333 * BIO_should_write(bio)) 2334 */ 2335 return (SSL_ERROR_WANT_READ); 2336 } else if (BIO_should_io_special(bio)) { 2337 reason = BIO_get_retry_reason(bio); 2338 if (reason == BIO_RR_CONNECT) 2339 return (SSL_ERROR_WANT_CONNECT); 2340 else if (reason == BIO_RR_ACCEPT) 2341 return (SSL_ERROR_WANT_ACCEPT); 2342 else 2343 return (SSL_ERROR_SYSCALL); 2344 } 2345 } 2346 if ((i < 0) && SSL_want_x509_lookup(s)) { 2347 return (SSL_ERROR_WANT_X509_LOOKUP); 2348 } 2349 2350 if (i == 0) { 2351 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2352 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2353 return (SSL_ERROR_ZERO_RETURN); 2354 } 2355 return (SSL_ERROR_SYSCALL); 2356} 2357 2358int 2359SSL_do_handshake(SSL *s) 2360{ 2361 int ret = 1; 2362 2363 if (s->internal->handshake_func == NULL) { 2364 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2365 return (-1); 2366 } 2367 2368 s->method->internal->ssl_renegotiate_check(s); 2369 2370 if (SSL_in_init(s) || SSL_in_before(s)) { 2371 ret = s->internal->handshake_func(s); 2372 } 2373 return (ret); 2374} 2375 2376/* 2377 * For the next 2 functions, SSL_clear() sets shutdown and so 2378 * one of these calls will reset it 2379 */ 2380void 2381SSL_set_accept_state(SSL *s) 2382{ 2383 s->server = 1; 2384 s->internal->shutdown = 0; 2385 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2386 s->internal->handshake_func = s->method->internal->ssl_accept; 2387 /* clear the current cipher */ 2388 ssl_clear_cipher_ctx(s); 2389 ssl_clear_hash_ctx(&s->read_hash); 2390 ssl_clear_hash_ctx(&s->internal->write_hash); 2391} 2392 2393void 2394SSL_set_connect_state(SSL *s) 2395{ 2396 s->server = 0; 2397 s->internal->shutdown = 0; 2398 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2399 s->internal->handshake_func = s->method->internal->ssl_connect; 2400 /* clear the current cipher */ 2401 ssl_clear_cipher_ctx(s); 2402 ssl_clear_hash_ctx(&s->read_hash); 2403 ssl_clear_hash_ctx(&s->internal->write_hash); 2404} 2405 2406int 2407ssl_undefined_function(SSL *s) 2408{ 2409 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2410 return (0); 2411} 2412 2413int 2414ssl_undefined_void_function(void) 2415{ 2416 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2417 return (0); 2418} 2419 2420int 2421ssl_undefined_const_function(const SSL *s) 2422{ 2423 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2424 return (0); 2425} 2426 2427const char * 2428ssl_version_string(int ver) 2429{ 2430 switch (ver) { 2431 case DTLS1_VERSION: 2432 return (SSL_TXT_DTLS1); 2433 case TLS1_VERSION: 2434 return (SSL_TXT_TLSV1); 2435 case TLS1_1_VERSION: 2436 return (SSL_TXT_TLSV1_1); 2437 case TLS1_2_VERSION: 2438 return (SSL_TXT_TLSV1_2); 2439 default: 2440 return ("unknown"); 2441 } 2442} 2443 2444const char * 2445SSL_get_version(const SSL *s) 2446{ 2447 return ssl_version_string(s->version); 2448} 2449 2450SSL * 2451SSL_dup(SSL *s) 2452{ 2453 STACK_OF(X509_NAME) *sk; 2454 X509_NAME *xn; 2455 SSL *ret; 2456 int i; 2457 2458 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2459 return (NULL); 2460 2461 ret->version = s->version; 2462 ret->internal->type = s->internal->type; 2463 ret->method = s->method; 2464 2465 if (s->session != NULL) { 2466 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2467 SSL_copy_session_id(ret, s); 2468 } else { 2469 /* 2470 * No session has been established yet, so we have to expect 2471 * that s->cert or ret->cert will be changed later -- 2472 * they should not both point to the same object, 2473 * and thus we can't use SSL_copy_session_id. 2474 */ 2475 2476 ret->method->internal->ssl_free(ret); 2477 ret->method = s->method; 2478 ret->method->internal->ssl_new(ret); 2479 2480 if (s->cert != NULL) { 2481 ssl_cert_free(ret->cert); 2482 ret->cert = ssl_cert_dup(s->cert); 2483 if (ret->cert == NULL) 2484 goto err; 2485 } 2486 2487 SSL_set_session_id_context(ret, 2488 s->sid_ctx, s->sid_ctx_length); 2489 } 2490 2491 ret->internal->options = s->internal->options; 2492 ret->internal->mode = s->internal->mode; 2493 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2494 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2495 ret->internal->msg_callback = s->internal->msg_callback; 2496 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2497 SSL_set_verify(ret, SSL_get_verify_mode(s), 2498 SSL_get_verify_callback(s)); 2499 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2500 ret->internal->generate_session_id = s->internal->generate_session_id; 2501 2502 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2503 2504 ret->internal->debug = s->internal->debug; 2505 2506 /* copy app data, a little dangerous perhaps */ 2507 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2508 &ret->internal->ex_data, &s->internal->ex_data)) 2509 goto err; 2510 2511 /* setup rbio, and wbio */ 2512 if (s->rbio != NULL) { 2513 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2514 goto err; 2515 } 2516 if (s->wbio != NULL) { 2517 if (s->wbio != s->rbio) { 2518 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2519 goto err; 2520 } else 2521 ret->wbio = ret->rbio; 2522 } 2523 ret->internal->rwstate = s->internal->rwstate; 2524 ret->internal->in_handshake = s->internal->in_handshake; 2525 ret->internal->handshake_func = s->internal->handshake_func; 2526 ret->server = s->server; 2527 ret->internal->renegotiate = s->internal->renegotiate; 2528 ret->internal->new_session = s->internal->new_session; 2529 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2530 ret->internal->shutdown = s->internal->shutdown; 2531 /* SSL_dup does not really work at any state, though */ 2532 S3I(ret)->hs.state = S3I(s)->hs.state; 2533 ret->internal->rstate = s->internal->rstate; 2534 2535 /* 2536 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2537 * ret->init_off 2538 */ 2539 ret->internal->init_num = 0; 2540 2541 ret->internal->hit = s->internal->hit; 2542 2543 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2544 2545 /* dup the cipher_list and cipher_list_by_id stacks */ 2546 if (s->cipher_list != NULL) { 2547 if ((ret->cipher_list = 2548 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2549 goto err; 2550 } 2551 if (s->internal->cipher_list_by_id != NULL) { 2552 if ((ret->internal->cipher_list_by_id = 2553 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2554 goto err; 2555 } 2556 2557 /* Dup the client_CA list */ 2558 if (s->internal->client_CA != NULL) { 2559 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2560 ret->internal->client_CA = sk; 2561 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2562 xn = sk_X509_NAME_value(sk, i); 2563 if (sk_X509_NAME_set(sk, i, 2564 X509_NAME_dup(xn)) == NULL) { 2565 X509_NAME_free(xn); 2566 goto err; 2567 } 2568 } 2569 } 2570 2571 if (0) { 2572err: 2573 if (ret != NULL) 2574 SSL_free(ret); 2575 ret = NULL; 2576 } 2577 return (ret); 2578} 2579 2580void 2581ssl_clear_cipher_ctx(SSL *s) 2582{ 2583 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2584 s->enc_read_ctx = NULL; 2585 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2586 s->internal->enc_write_ctx = NULL; 2587 2588 if (s->internal->aead_read_ctx != NULL) { 2589 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2590 free(s->internal->aead_read_ctx); 2591 s->internal->aead_read_ctx = NULL; 2592 } 2593 if (s->internal->aead_write_ctx != NULL) { 2594 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2595 free(s->internal->aead_write_ctx); 2596 s->internal->aead_write_ctx = NULL; 2597 } 2598 2599} 2600 2601/* Fix this function so that it takes an optional type parameter */ 2602X509 * 2603SSL_get_certificate(const SSL *s) 2604{ 2605 if (s->cert != NULL) 2606 return (s->cert->key->x509); 2607 else 2608 return (NULL); 2609} 2610 2611/* Fix this function so that it takes an optional type parameter */ 2612EVP_PKEY * 2613SSL_get_privatekey(SSL *s) 2614{ 2615 if (s->cert != NULL) 2616 return (s->cert->key->privatekey); 2617 else 2618 return (NULL); 2619} 2620 2621const SSL_CIPHER * 2622SSL_get_current_cipher(const SSL *s) 2623{ 2624 if ((s->session != NULL) && (s->session->cipher != NULL)) 2625 return (s->session->cipher); 2626 return (NULL); 2627} 2628const void * 2629SSL_get_current_compression(SSL *s) 2630{ 2631 return (NULL); 2632} 2633 2634const void * 2635SSL_get_current_expansion(SSL *s) 2636{ 2637 return (NULL); 2638} 2639 2640int 2641ssl_init_wbio_buffer(SSL *s, int push) 2642{ 2643 BIO *bbio; 2644 2645 if (s->bbio == NULL) { 2646 bbio = BIO_new(BIO_f_buffer()); 2647 if (bbio == NULL) 2648 return (0); 2649 s->bbio = bbio; 2650 } else { 2651 bbio = s->bbio; 2652 if (s->bbio == s->wbio) 2653 s->wbio = BIO_pop(s->wbio); 2654 } 2655 (void)BIO_reset(bbio); 2656/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2657 if (!BIO_set_read_buffer_size(bbio, 1)) { 2658 SSLerror(s, ERR_R_BUF_LIB); 2659 return (0); 2660 } 2661 if (push) { 2662 if (s->wbio != bbio) 2663 s->wbio = BIO_push(bbio, s->wbio); 2664 } else { 2665 if (s->wbio == bbio) 2666 s->wbio = BIO_pop(bbio); 2667 } 2668 return (1); 2669} 2670 2671void 2672ssl_free_wbio_buffer(SSL *s) 2673{ 2674 if (s == NULL) 2675 return; 2676 2677 if (s->bbio == NULL) 2678 return; 2679 2680 if (s->bbio == s->wbio) { 2681 /* remove buffering */ 2682 s->wbio = BIO_pop(s->wbio); 2683 } 2684 BIO_free(s->bbio); 2685 s->bbio = NULL; 2686} 2687 2688void 2689SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2690{ 2691 ctx->internal->quiet_shutdown = mode; 2692} 2693 2694int 2695SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2696{ 2697 return (ctx->internal->quiet_shutdown); 2698} 2699 2700void 2701SSL_set_quiet_shutdown(SSL *s, int mode) 2702{ 2703 s->internal->quiet_shutdown = mode; 2704} 2705 2706int 2707SSL_get_quiet_shutdown(const SSL *s) 2708{ 2709 return (s->internal->quiet_shutdown); 2710} 2711 2712void 2713SSL_set_shutdown(SSL *s, int mode) 2714{ 2715 s->internal->shutdown = mode; 2716} 2717 2718int 2719SSL_get_shutdown(const SSL *s) 2720{ 2721 return (s->internal->shutdown); 2722} 2723 2724int 2725SSL_version(const SSL *s) 2726{ 2727 return (s->version); 2728} 2729 2730SSL_CTX * 2731SSL_get_SSL_CTX(const SSL *ssl) 2732{ 2733 return (ssl->ctx); 2734} 2735 2736SSL_CTX * 2737SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2738{ 2739 CERT *ocert = ssl->cert; 2740 2741 if (ssl->ctx == ctx) 2742 return (ssl->ctx); 2743 if (ctx == NULL) 2744 ctx = ssl->initial_ctx; 2745 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2746 if (ocert != NULL) { 2747 int i; 2748 /* Copy negotiated digests from original certificate. */ 2749 for (i = 0; i < SSL_PKEY_NUM; i++) 2750 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2751 ssl_cert_free(ocert); 2752 } 2753 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2754 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2755 ssl->ctx = ctx; 2756 return (ssl->ctx); 2757} 2758 2759int 2760SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2761{ 2762 return (X509_STORE_set_default_paths(ctx->cert_store)); 2763} 2764 2765int 2766SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2767 const char *CApath) 2768{ 2769 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2770} 2771 2772int 2773SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2774{ 2775 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2776} 2777 2778void 2779SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2780{ 2781 ssl->internal->info_callback = cb; 2782} 2783 2784void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2785{ 2786 return (ssl->internal->info_callback); 2787} 2788 2789int 2790SSL_state(const SSL *ssl) 2791{ 2792 return (S3I(ssl)->hs.state); 2793} 2794 2795void 2796SSL_set_state(SSL *ssl, int state) 2797{ 2798 S3I(ssl)->hs.state = state; 2799} 2800 2801void 2802SSL_set_verify_result(SSL *ssl, long arg) 2803{ 2804 ssl->verify_result = arg; 2805} 2806 2807long 2808SSL_get_verify_result(const SSL *ssl) 2809{ 2810 return (ssl->verify_result); 2811} 2812 2813int 2814SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2815 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2816{ 2817 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2818 new_func, dup_func, free_func)); 2819} 2820 2821int 2822SSL_set_ex_data(SSL *s, int idx, void *arg) 2823{ 2824 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2825} 2826 2827void * 2828SSL_get_ex_data(const SSL *s, int idx) 2829{ 2830 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2831} 2832 2833int 2834SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2835 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2836{ 2837 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2838 new_func, dup_func, free_func)); 2839} 2840 2841int 2842SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2843{ 2844 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2845} 2846 2847void * 2848SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2849{ 2850 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2851} 2852 2853int 2854ssl_ok(SSL *s) 2855{ 2856 return (1); 2857} 2858 2859X509_STORE * 2860SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2861{ 2862 return (ctx->cert_store); 2863} 2864 2865void 2866SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2867{ 2868 X509_STORE_free(ctx->cert_store); 2869 ctx->cert_store = store; 2870} 2871 2872int 2873SSL_want(const SSL *s) 2874{ 2875 return (s->internal->rwstate); 2876} 2877 2878void 2879SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2880 int keylength)) 2881{ 2882 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2883} 2884 2885void 2886SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2887 int keylength)) 2888{ 2889 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2890} 2891 2892void 2893SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2894 int keylength)) 2895{ 2896 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2897} 2898 2899void 2900SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2901 int keylength)) 2902{ 2903 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2904} 2905 2906void 2907SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2908 int is_export, int keylength)) 2909{ 2910 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2911 (void (*)(void))ecdh); 2912} 2913 2914void 2915SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2916 int keylength)) 2917{ 2918 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2919} 2920 2921 2922void 2923SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2924 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2925{ 2926 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2927 (void (*)(void))cb); 2928} 2929 2930void 2931SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2932 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2933{ 2934 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2935} 2936 2937void 2938ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2939{ 2940 if (*hash) 2941 EVP_MD_CTX_destroy(*hash); 2942 *hash = NULL; 2943} 2944 2945void 2946SSL_set_debug(SSL *s, int debug) 2947{ 2948 s->internal->debug = debug; 2949} 2950 2951int 2952SSL_cache_hit(SSL *s) 2953{ 2954 return (s->internal->hit); 2955} 2956 2957int 2958SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2959{ 2960 return ssl_version_set_min(ctx->method, version, 2961 ctx->internal->max_version, &ctx->internal->min_version); 2962} 2963 2964int 2965SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2966{ 2967 return ssl_version_set_max(ctx->method, version, 2968 ctx->internal->min_version, &ctx->internal->max_version); 2969} 2970 2971int 2972SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2973{ 2974 return ssl_version_set_min(ssl->method, version, 2975 ssl->internal->max_version, &ssl->internal->min_version); 2976} 2977 2978int 2979SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2980{ 2981 return ssl_version_set_max(ssl->method, version, 2982 ssl->internal->min_version, &ssl->internal->max_version); 2983} 2984 2985static int 2986ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2987{ 2988 SSL_CIPHER const *a = a_; 2989 SSL_CIPHER const *b = b_; 2990 return ssl_cipher_id_cmp(a, b); 2991} 2992 2993SSL_CIPHER * 2994OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 2995{ 2996 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 2997 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 2998} 2999