ssl_lib.c revision 1.167
1/* $OpenBSD: ssl_lib.c,v 1.167 2017/08/12 21:03:08 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, const unsigned char *p, int num) 1432{ 1433 CBS cbs; 1434 const SSL_CIPHER *c; 1435 STACK_OF(SSL_CIPHER) *sk = NULL; 1436 unsigned long cipher_id; 1437 uint16_t cipher_value, max_version; 1438 1439 if (s->s3) 1440 S3I(s)->send_connection_binding = 0; 1441 1442 /* 1443 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1444 */ 1445 if (num < 2 || num > 0x10000 - 2) { 1446 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1447 return (NULL); 1448 } 1449 1450 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1451 SSLerror(s, ERR_R_MALLOC_FAILURE); 1452 goto err; 1453 } 1454 1455 CBS_init(&cbs, p, num); 1456 while (CBS_len(&cbs) > 0) { 1457 if (!CBS_get_u16(&cbs, &cipher_value)) { 1458 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1459 goto err; 1460 } 1461 1462 cipher_id = SSL3_CK_ID | cipher_value; 1463 1464 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1465 /* 1466 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1467 * renegotiating. 1468 */ 1469 if (s->internal->renegotiate) { 1470 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1471 ssl3_send_alert(s, SSL3_AL_FATAL, 1472 SSL_AD_HANDSHAKE_FAILURE); 1473 1474 goto err; 1475 } 1476 S3I(s)->send_connection_binding = 1; 1477 continue; 1478 } 1479 1480 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1481 /* 1482 * TLS_FALLBACK_SCSV indicates that the client 1483 * previously tried a higher protocol version. 1484 * Fail if the current version is an unexpected 1485 * downgrade. 1486 */ 1487 max_version = ssl_max_server_version(s); 1488 if (max_version == 0 || s->version < max_version) { 1489 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1490 if (s->s3 != NULL) 1491 ssl3_send_alert(s, SSL3_AL_FATAL, 1492 SSL_AD_INAPPROPRIATE_FALLBACK); 1493 goto err; 1494 } 1495 continue; 1496 } 1497 1498 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1499 if (!sk_SSL_CIPHER_push(sk, c)) { 1500 SSLerror(s, ERR_R_MALLOC_FAILURE); 1501 goto err; 1502 } 1503 } 1504 } 1505 1506 return (sk); 1507 1508err: 1509 sk_SSL_CIPHER_free(sk); 1510 1511 return (NULL); 1512} 1513 1514 1515/* 1516 * Return a servername extension value if provided in Client Hello, or NULL. 1517 * So far, only host_name types are defined (RFC 3546). 1518 */ 1519const char * 1520SSL_get_servername(const SSL *s, const int type) 1521{ 1522 if (type != TLSEXT_NAMETYPE_host_name) 1523 return (NULL); 1524 1525 return (s->session && !s->tlsext_hostname ? 1526 s->session->tlsext_hostname : 1527 s->tlsext_hostname); 1528} 1529 1530int 1531SSL_get_servername_type(const SSL *s) 1532{ 1533 if (s->session && 1534 (!s->tlsext_hostname ? 1535 s->session->tlsext_hostname : s->tlsext_hostname)) 1536 return (TLSEXT_NAMETYPE_host_name); 1537 return (-1); 1538} 1539 1540/* 1541 * SSL_select_next_proto implements standard protocol selection. It is 1542 * expected that this function is called from the callback set by 1543 * SSL_CTX_set_alpn_select_cb. 1544 * 1545 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1546 * strings. The length byte itself is not included in the length. A byte 1547 * string of length 0 is invalid. No byte string may be truncated. 1548 * 1549 * It returns either: 1550 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1551 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1552 */ 1553int 1554SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1555 const unsigned char *server, unsigned int server_len, 1556 const unsigned char *client, unsigned int client_len) 1557{ 1558 unsigned int i, j; 1559 const unsigned char *result; 1560 int status = OPENSSL_NPN_UNSUPPORTED; 1561 1562 /* 1563 * For each protocol in server preference order, 1564 * see if we support it. 1565 */ 1566 for (i = 0; i < server_len; ) { 1567 for (j = 0; j < client_len; ) { 1568 if (server[i] == client[j] && 1569 memcmp(&server[i + 1], 1570 &client[j + 1], server[i]) == 0) { 1571 /* We found a match */ 1572 result = &server[i]; 1573 status = OPENSSL_NPN_NEGOTIATED; 1574 goto found; 1575 } 1576 j += client[j]; 1577 j++; 1578 } 1579 i += server[i]; 1580 i++; 1581 } 1582 1583 /* There's no overlap between our protocols and the server's list. */ 1584 result = client; 1585 status = OPENSSL_NPN_NO_OVERLAP; 1586 1587found: 1588 *out = (unsigned char *) result + 1; 1589 *outlen = result[0]; 1590 return (status); 1591} 1592 1593/* SSL_get0_next_proto_negotiated is deprecated. */ 1594void 1595SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1596 unsigned *len) 1597{ 1598 *data = NULL; 1599 *len = 0; 1600} 1601 1602/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1603void 1604SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1605 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1606{ 1607} 1608 1609/* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1610void 1611SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1612 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1613 unsigned int inlen, void *arg), void *arg) 1614{ 1615} 1616 1617/* 1618 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1619 * protocols, which must be in wire-format (i.e. a series of non-empty, 1620 * 8-bit length-prefixed strings). Returns 0 on success. 1621 */ 1622int 1623SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1624 unsigned int protos_len) 1625{ 1626 free(ctx->internal->alpn_client_proto_list); 1627 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1628 return (1); 1629 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1630 ctx->internal->alpn_client_proto_list_len = protos_len; 1631 1632 return (0); 1633} 1634 1635/* 1636 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1637 * protocols, which must be in wire-format (i.e. a series of non-empty, 1638 * 8-bit length-prefixed strings). Returns 0 on success. 1639 */ 1640int 1641SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1642 unsigned int protos_len) 1643{ 1644 free(ssl->internal->alpn_client_proto_list); 1645 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1646 return (1); 1647 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1648 ssl->internal->alpn_client_proto_list_len = protos_len; 1649 1650 return (0); 1651} 1652 1653/* 1654 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1655 * ClientHello processing in order to select an ALPN protocol from the 1656 * client's list of offered protocols. 1657 */ 1658void 1659SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1660 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1661 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1662{ 1663 ctx->internal->alpn_select_cb = cb; 1664 ctx->internal->alpn_select_cb_arg = arg; 1665} 1666 1667/* 1668 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1669 * it sets data to point to len bytes of protocol name (not including the 1670 * leading length-prefix byte). If the server didn't respond with* a negotiated 1671 * protocol then len will be zero. 1672 */ 1673void 1674SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1675 unsigned *len) 1676{ 1677 *data = NULL; 1678 *len = 0; 1679 1680 if (ssl->s3 != NULL) { 1681 *data = ssl->s3->internal->alpn_selected; 1682 *len = ssl->s3->internal->alpn_selected_len; 1683 } 1684} 1685 1686int 1687SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1688 const char *label, size_t llen, const unsigned char *p, size_t plen, 1689 int use_context) 1690{ 1691 return (tls1_export_keying_material(s, out, olen, 1692 label, llen, p, plen, use_context)); 1693} 1694 1695static unsigned long 1696ssl_session_hash(const SSL_SESSION *a) 1697{ 1698 unsigned long l; 1699 1700 l = (unsigned long) 1701 ((unsigned int) a->session_id[0] )| 1702 ((unsigned int) a->session_id[1]<< 8L)| 1703 ((unsigned long)a->session_id[2]<<16L)| 1704 ((unsigned long)a->session_id[3]<<24L); 1705 return (l); 1706} 1707 1708/* 1709 * NB: If this function (or indeed the hash function which uses a sort of 1710 * coarser function than this one) is changed, ensure 1711 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1712 * able to construct an SSL_SESSION that will collide with any existing session 1713 * with a matching session ID. 1714 */ 1715static int 1716ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1717{ 1718 if (a->ssl_version != b->ssl_version) 1719 return (1); 1720 if (a->session_id_length != b->session_id_length) 1721 return (1); 1722 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1723 return (1); 1724 return (0); 1725} 1726 1727/* 1728 * These wrapper functions should remain rather than redeclaring 1729 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1730 * variable. The reason is that the functions aren't static, they're exposed via 1731 * ssl.h. 1732 */ 1733static unsigned long 1734ssl_session_LHASH_HASH(const void *arg) 1735{ 1736 const SSL_SESSION *a = arg; 1737 1738 return ssl_session_hash(a); 1739} 1740 1741static int 1742ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1743{ 1744 const SSL_SESSION *a = arg1; 1745 const SSL_SESSION *b = arg2; 1746 1747 return ssl_session_cmp(a, b); 1748} 1749 1750SSL_CTX * 1751SSL_CTX_new(const SSL_METHOD *meth) 1752{ 1753 SSL_CTX *ret; 1754 1755 if (meth == NULL) { 1756 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1757 return (NULL); 1758 } 1759 1760 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1761 SSLerrorx(ERR_R_MALLOC_FAILURE); 1762 return (NULL); 1763 } 1764 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1765 free(ret); 1766 SSLerrorx(ERR_R_MALLOC_FAILURE); 1767 return (NULL); 1768 } 1769 1770 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1771 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1772 goto err; 1773 } 1774 1775 ret->method = meth; 1776 ret->internal->min_version = meth->internal->min_version; 1777 ret->internal->max_version = meth->internal->max_version; 1778 1779 ret->cert_store = NULL; 1780 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1781 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1782 ret->internal->session_cache_head = NULL; 1783 ret->internal->session_cache_tail = NULL; 1784 1785 /* We take the system default */ 1786 ret->session_timeout = meth->internal->get_timeout(); 1787 1788 ret->internal->new_session_cb = 0; 1789 ret->internal->remove_session_cb = 0; 1790 ret->internal->get_session_cb = 0; 1791 ret->internal->generate_session_id = 0; 1792 1793 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1794 1795 ret->references = 1; 1796 ret->internal->quiet_shutdown = 0; 1797 1798 ret->internal->info_callback = NULL; 1799 1800 ret->internal->app_verify_callback = 0; 1801 ret->internal->app_verify_arg = NULL; 1802 1803 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1804 ret->internal->read_ahead = 0; 1805 ret->internal->msg_callback = 0; 1806 ret->internal->msg_callback_arg = NULL; 1807 ret->verify_mode = SSL_VERIFY_NONE; 1808 ret->sid_ctx_length = 0; 1809 ret->internal->default_verify_callback = NULL; 1810 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1811 goto err; 1812 1813 ret->default_passwd_callback = 0; 1814 ret->default_passwd_callback_userdata = NULL; 1815 ret->internal->client_cert_cb = 0; 1816 ret->internal->app_gen_cookie_cb = 0; 1817 ret->internal->app_verify_cookie_cb = 0; 1818 1819 ret->internal->sessions = lh_SSL_SESSION_new(); 1820 if (ret->internal->sessions == NULL) 1821 goto err; 1822 ret->cert_store = X509_STORE_new(); 1823 if (ret->cert_store == NULL) 1824 goto err; 1825 1826 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1827 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1828 if (ret->cipher_list == NULL || 1829 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1830 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1831 goto err2; 1832 } 1833 1834 ret->param = X509_VERIFY_PARAM_new(); 1835 if (!ret->param) 1836 goto err; 1837 1838 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1839 goto err; 1840 1841 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1842 1843 ret->extra_certs = NULL; 1844 1845 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1846 1847 ret->internal->tlsext_servername_callback = 0; 1848 ret->internal->tlsext_servername_arg = NULL; 1849 1850 /* Setup RFC4507 ticket keys */ 1851 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1852 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1853 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1854 1855 ret->internal->tlsext_status_cb = 0; 1856 ret->internal->tlsext_status_arg = NULL; 1857 1858#ifndef OPENSSL_NO_ENGINE 1859 ret->internal->client_cert_engine = NULL; 1860#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1861#define eng_strx(x) #x 1862#define eng_str(x) eng_strx(x) 1863 /* Use specific client engine automatically... ignore errors */ 1864 { 1865 ENGINE *eng; 1866 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1867 if (!eng) { 1868 ERR_clear_error(); 1869 ENGINE_load_builtin_engines(); 1870 eng = ENGINE_by_id(eng_str( 1871 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1872 } 1873 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1874 ERR_clear_error(); 1875 } 1876#endif 1877#endif 1878 /* 1879 * Default is to connect to non-RI servers. When RI is more widely 1880 * deployed might change this. 1881 */ 1882 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1883 1884 return (ret); 1885err: 1886 SSLerrorx(ERR_R_MALLOC_FAILURE); 1887err2: 1888 SSL_CTX_free(ret); 1889 return (NULL); 1890} 1891 1892void 1893SSL_CTX_free(SSL_CTX *ctx) 1894{ 1895 int i; 1896 1897 if (ctx == NULL) 1898 return; 1899 1900 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1901 if (i > 0) 1902 return; 1903 1904 X509_VERIFY_PARAM_free(ctx->param); 1905 1906 /* 1907 * Free internal session cache. However: the remove_cb() may reference 1908 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1909 * after the sessions were flushed. 1910 * As the ex_data handling routines might also touch the session cache, 1911 * the most secure solution seems to be: empty (flush) the cache, then 1912 * free ex_data, then finally free the cache. 1913 * (See ticket [openssl.org #212].) 1914 */ 1915 if (ctx->internal->sessions != NULL) 1916 SSL_CTX_flush_sessions(ctx, 0); 1917 1918 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1919 1920 lh_SSL_SESSION_free(ctx->internal->sessions); 1921 1922 X509_STORE_free(ctx->cert_store); 1923 sk_SSL_CIPHER_free(ctx->cipher_list); 1924 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1925 ssl_cert_free(ctx->internal->cert); 1926 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1927 sk_X509_pop_free(ctx->extra_certs, X509_free); 1928 1929#ifndef OPENSSL_NO_SRTP 1930 if (ctx->internal->srtp_profiles) 1931 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1932#endif 1933 1934#ifndef OPENSSL_NO_ENGINE 1935 if (ctx->internal->client_cert_engine) 1936 ENGINE_finish(ctx->internal->client_cert_engine); 1937#endif 1938 1939 free(ctx->internal->tlsext_ecpointformatlist); 1940 free(ctx->internal->tlsext_supportedgroups); 1941 1942 free(ctx->internal->alpn_client_proto_list); 1943 1944 free(ctx->internal); 1945 free(ctx); 1946} 1947 1948void 1949SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1950{ 1951 ctx->default_passwd_callback = cb; 1952} 1953 1954void 1955SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1956{ 1957 ctx->default_passwd_callback_userdata = u; 1958} 1959 1960void 1961SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1962 void *), void *arg) 1963{ 1964 ctx->internal->app_verify_callback = cb; 1965 ctx->internal->app_verify_arg = arg; 1966} 1967 1968void 1969SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1970{ 1971 ctx->verify_mode = mode; 1972 ctx->internal->default_verify_callback = cb; 1973} 1974 1975void 1976SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1977{ 1978 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1979} 1980 1981void 1982ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1983{ 1984 int rsa_enc, rsa_sign, dh_tmp; 1985 int have_ecc_cert; 1986 unsigned long mask_k, mask_a; 1987 X509 *x = NULL; 1988 CERT_PKEY *cpk; 1989 1990 if (c == NULL) 1991 return; 1992 1993 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 1994 c->dh_tmp_auto != 0); 1995 1996 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1997 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1998 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1999 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2000 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2001 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2002 2003 mask_k = 0; 2004 mask_a = 0; 2005 2006 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2007 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2008 mask_k |= SSL_kGOST; 2009 mask_a |= SSL_aGOST01; 2010 } 2011 2012 if (rsa_enc) 2013 mask_k |= SSL_kRSA; 2014 2015 if (dh_tmp) 2016 mask_k |= SSL_kDHE; 2017 2018 if (rsa_enc || rsa_sign) 2019 mask_a |= SSL_aRSA; 2020 2021 mask_a |= SSL_aNULL; 2022 2023 /* 2024 * An ECC certificate may be usable for ECDH and/or 2025 * ECDSA cipher suites depending on the key usage extension. 2026 */ 2027 if (have_ecc_cert) { 2028 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2029 2030 /* This call populates extension flags (ex_flags). */ 2031 X509_check_purpose(x, -1, 0); 2032 2033 /* Key usage, if present, must allow signing. */ 2034 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2035 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2036 mask_a |= SSL_aECDSA; 2037 } 2038 2039 mask_k |= SSL_kECDHE; 2040 2041 c->mask_k = mask_k; 2042 c->mask_a = mask_a; 2043 c->valid = 1; 2044} 2045 2046/* See if this handshake is using an ECC cipher suite. */ 2047int 2048ssl_using_ecc_cipher(SSL *s) 2049{ 2050 unsigned long alg_a, alg_k; 2051 2052 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2053 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2054 2055 return SSI(s)->tlsext_ecpointformatlist != NULL && 2056 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2057 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2058} 2059 2060int 2061ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2062{ 2063 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2064 unsigned long alg_a; 2065 2066 alg_a = cs->algorithm_auth; 2067 2068 if (alg_a & SSL_aECDSA) { 2069 /* This call populates extension flags (ex_flags). */ 2070 X509_check_purpose(x, -1, 0); 2071 2072 /* Key usage, if present, must allow signing. */ 2073 if ((x->ex_flags & EXFLAG_KUSAGE) && 2074 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2075 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2076 return (0); 2077 } 2078 } 2079 2080 return (1); 2081} 2082 2083CERT_PKEY * 2084ssl_get_server_send_pkey(const SSL *s) 2085{ 2086 unsigned long alg_a; 2087 CERT *c; 2088 int i; 2089 2090 c = s->cert; 2091 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2092 2093 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2094 2095 if (alg_a & SSL_aECDSA) { 2096 i = SSL_PKEY_ECC; 2097 } else if (alg_a & SSL_aRSA) { 2098 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2099 i = SSL_PKEY_RSA_SIGN; 2100 else 2101 i = SSL_PKEY_RSA_ENC; 2102 } else if (alg_a & SSL_aGOST01) { 2103 i = SSL_PKEY_GOST01; 2104 } else { /* if (alg_a & SSL_aNULL) */ 2105 SSLerror(s, ERR_R_INTERNAL_ERROR); 2106 return (NULL); 2107 } 2108 2109 return (c->pkeys + i); 2110} 2111 2112X509 * 2113ssl_get_server_send_cert(const SSL *s) 2114{ 2115 CERT_PKEY *cpk; 2116 2117 cpk = ssl_get_server_send_pkey(s); 2118 if (!cpk) 2119 return (NULL); 2120 return (cpk->x509); 2121} 2122 2123EVP_PKEY * 2124ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2125{ 2126 unsigned long alg_a; 2127 CERT *c; 2128 int idx = -1; 2129 2130 alg_a = cipher->algorithm_auth; 2131 c = s->cert; 2132 2133 if (alg_a & SSL_aRSA) { 2134 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2135 idx = SSL_PKEY_RSA_SIGN; 2136 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2137 idx = SSL_PKEY_RSA_ENC; 2138 } else if ((alg_a & SSL_aECDSA) && 2139 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2140 idx = SSL_PKEY_ECC; 2141 if (idx == -1) { 2142 SSLerror(s, ERR_R_INTERNAL_ERROR); 2143 return (NULL); 2144 } 2145 if (pmd) 2146 *pmd = c->pkeys[idx].digest; 2147 return (c->pkeys[idx].privatekey); 2148} 2149 2150DH * 2151ssl_get_auto_dh(SSL *s) 2152{ 2153 CERT_PKEY *cpk; 2154 int keylen; 2155 DH *dhp; 2156 2157 if (s->cert->dh_tmp_auto == 2) { 2158 keylen = 1024; 2159 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2160 keylen = 1024; 2161 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2162 keylen = 3072; 2163 } else { 2164 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2165 return (NULL); 2166 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2167 return (NULL); 2168 keylen = EVP_PKEY_bits(cpk->privatekey); 2169 } 2170 2171 if ((dhp = DH_new()) == NULL) 2172 return (NULL); 2173 2174 dhp->g = BN_new(); 2175 if (dhp->g != NULL) 2176 BN_set_word(dhp->g, 2); 2177 2178 if (keylen >= 8192) 2179 dhp->p = get_rfc3526_prime_8192(NULL); 2180 else if (keylen >= 4096) 2181 dhp->p = get_rfc3526_prime_4096(NULL); 2182 else if (keylen >= 3072) 2183 dhp->p = get_rfc3526_prime_3072(NULL); 2184 else if (keylen >= 2048) 2185 dhp->p = get_rfc3526_prime_2048(NULL); 2186 else if (keylen >= 1536) 2187 dhp->p = get_rfc3526_prime_1536(NULL); 2188 else 2189 dhp->p = get_rfc2409_prime_1024(NULL); 2190 2191 if (dhp->p == NULL || dhp->g == NULL) { 2192 DH_free(dhp); 2193 return (NULL); 2194 } 2195 return (dhp); 2196} 2197 2198void 2199ssl_update_cache(SSL *s, int mode) 2200{ 2201 int i; 2202 2203 /* 2204 * If the session_id_length is 0, we are not supposed to cache it, 2205 * and it would be rather hard to do anyway :-) 2206 */ 2207 if (s->session->session_id_length == 0) 2208 return; 2209 2210 i = s->session_ctx->internal->session_cache_mode; 2211 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2212 || SSL_CTX_add_session(s->session_ctx, s->session)) 2213 && (s->session_ctx->internal->new_session_cb != NULL)) { 2214 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2215 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2216 SSL_SESSION_free(s->session); 2217 } 2218 2219 /* auto flush every 255 connections */ 2220 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2221 ((i & mode) == mode)) { 2222 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2223 s->session_ctx->internal->stats.sess_connect_good : 2224 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2225 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2226 } 2227 } 2228} 2229 2230const SSL_METHOD * 2231SSL_get_ssl_method(SSL *s) 2232{ 2233 return (s->method); 2234} 2235 2236int 2237SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2238{ 2239 int conn = -1; 2240 int ret = 1; 2241 2242 if (s->method != meth) { 2243 if (s->internal->handshake_func != NULL) 2244 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2245 2246 if (s->method->internal->version == meth->internal->version) 2247 s->method = meth; 2248 else { 2249 s->method->internal->ssl_free(s); 2250 s->method = meth; 2251 ret = s->method->internal->ssl_new(s); 2252 } 2253 2254 if (conn == 1) 2255 s->internal->handshake_func = meth->internal->ssl_connect; 2256 else if (conn == 0) 2257 s->internal->handshake_func = meth->internal->ssl_accept; 2258 } 2259 return (ret); 2260} 2261 2262int 2263SSL_get_error(const SSL *s, int i) 2264{ 2265 int reason; 2266 unsigned long l; 2267 BIO *bio; 2268 2269 if (i > 0) 2270 return (SSL_ERROR_NONE); 2271 2272 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2273 * etc, where we do encode the error */ 2274 if ((l = ERR_peek_error()) != 0) { 2275 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2276 return (SSL_ERROR_SYSCALL); 2277 else 2278 return (SSL_ERROR_SSL); 2279 } 2280 2281 if ((i < 0) && SSL_want_read(s)) { 2282 bio = SSL_get_rbio(s); 2283 if (BIO_should_read(bio)) { 2284 return (SSL_ERROR_WANT_READ); 2285 } else if (BIO_should_write(bio)) { 2286 /* 2287 * This one doesn't make too much sense... We never 2288 * try to write to the rbio, and an application 2289 * program where rbio and wbio are separate couldn't 2290 * even know what it should wait for. However if we 2291 * ever set s->internal->rwstate incorrectly (so that we have 2292 * SSL_want_read(s) instead of SSL_want_write(s)) 2293 * and rbio and wbio *are* the same, this test works 2294 * around that bug; so it might be safer to keep it. 2295 */ 2296 return (SSL_ERROR_WANT_WRITE); 2297 } else if (BIO_should_io_special(bio)) { 2298 reason = BIO_get_retry_reason(bio); 2299 if (reason == BIO_RR_CONNECT) 2300 return (SSL_ERROR_WANT_CONNECT); 2301 else if (reason == BIO_RR_ACCEPT) 2302 return (SSL_ERROR_WANT_ACCEPT); 2303 else 2304 return (SSL_ERROR_SYSCALL); /* unknown */ 2305 } 2306 } 2307 2308 if ((i < 0) && SSL_want_write(s)) { 2309 bio = SSL_get_wbio(s); 2310 if (BIO_should_write(bio)) { 2311 return (SSL_ERROR_WANT_WRITE); 2312 } else if (BIO_should_read(bio)) { 2313 /* 2314 * See above (SSL_want_read(s) with 2315 * BIO_should_write(bio)) 2316 */ 2317 return (SSL_ERROR_WANT_READ); 2318 } else if (BIO_should_io_special(bio)) { 2319 reason = BIO_get_retry_reason(bio); 2320 if (reason == BIO_RR_CONNECT) 2321 return (SSL_ERROR_WANT_CONNECT); 2322 else if (reason == BIO_RR_ACCEPT) 2323 return (SSL_ERROR_WANT_ACCEPT); 2324 else 2325 return (SSL_ERROR_SYSCALL); 2326 } 2327 } 2328 if ((i < 0) && SSL_want_x509_lookup(s)) { 2329 return (SSL_ERROR_WANT_X509_LOOKUP); 2330 } 2331 2332 if (i == 0) { 2333 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2334 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2335 return (SSL_ERROR_ZERO_RETURN); 2336 } 2337 return (SSL_ERROR_SYSCALL); 2338} 2339 2340int 2341SSL_do_handshake(SSL *s) 2342{ 2343 int ret = 1; 2344 2345 if (s->internal->handshake_func == NULL) { 2346 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2347 return (-1); 2348 } 2349 2350 s->method->internal->ssl_renegotiate_check(s); 2351 2352 if (SSL_in_init(s) || SSL_in_before(s)) { 2353 ret = s->internal->handshake_func(s); 2354 } 2355 return (ret); 2356} 2357 2358/* 2359 * For the next 2 functions, SSL_clear() sets shutdown and so 2360 * one of these calls will reset it 2361 */ 2362void 2363SSL_set_accept_state(SSL *s) 2364{ 2365 s->server = 1; 2366 s->internal->shutdown = 0; 2367 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2368 s->internal->handshake_func = s->method->internal->ssl_accept; 2369 /* clear the current cipher */ 2370 ssl_clear_cipher_ctx(s); 2371 ssl_clear_hash_ctx(&s->read_hash); 2372 ssl_clear_hash_ctx(&s->internal->write_hash); 2373} 2374 2375void 2376SSL_set_connect_state(SSL *s) 2377{ 2378 s->server = 0; 2379 s->internal->shutdown = 0; 2380 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2381 s->internal->handshake_func = s->method->internal->ssl_connect; 2382 /* clear the current cipher */ 2383 ssl_clear_cipher_ctx(s); 2384 ssl_clear_hash_ctx(&s->read_hash); 2385 ssl_clear_hash_ctx(&s->internal->write_hash); 2386} 2387 2388int 2389ssl_undefined_function(SSL *s) 2390{ 2391 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2392 return (0); 2393} 2394 2395int 2396ssl_undefined_void_function(void) 2397{ 2398 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2399 return (0); 2400} 2401 2402int 2403ssl_undefined_const_function(const SSL *s) 2404{ 2405 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2406 return (0); 2407} 2408 2409const char * 2410ssl_version_string(int ver) 2411{ 2412 switch (ver) { 2413 case DTLS1_VERSION: 2414 return (SSL_TXT_DTLS1); 2415 case TLS1_VERSION: 2416 return (SSL_TXT_TLSV1); 2417 case TLS1_1_VERSION: 2418 return (SSL_TXT_TLSV1_1); 2419 case TLS1_2_VERSION: 2420 return (SSL_TXT_TLSV1_2); 2421 default: 2422 return ("unknown"); 2423 } 2424} 2425 2426const char * 2427SSL_get_version(const SSL *s) 2428{ 2429 return ssl_version_string(s->version); 2430} 2431 2432SSL * 2433SSL_dup(SSL *s) 2434{ 2435 STACK_OF(X509_NAME) *sk; 2436 X509_NAME *xn; 2437 SSL *ret; 2438 int i; 2439 2440 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2441 return (NULL); 2442 2443 ret->version = s->version; 2444 ret->internal->type = s->internal->type; 2445 ret->method = s->method; 2446 2447 if (s->session != NULL) { 2448 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2449 SSL_copy_session_id(ret, s); 2450 } else { 2451 /* 2452 * No session has been established yet, so we have to expect 2453 * that s->cert or ret->cert will be changed later -- 2454 * they should not both point to the same object, 2455 * and thus we can't use SSL_copy_session_id. 2456 */ 2457 2458 ret->method->internal->ssl_free(ret); 2459 ret->method = s->method; 2460 ret->method->internal->ssl_new(ret); 2461 2462 if (s->cert != NULL) { 2463 ssl_cert_free(ret->cert); 2464 ret->cert = ssl_cert_dup(s->cert); 2465 if (ret->cert == NULL) 2466 goto err; 2467 } 2468 2469 SSL_set_session_id_context(ret, 2470 s->sid_ctx, s->sid_ctx_length); 2471 } 2472 2473 ret->internal->options = s->internal->options; 2474 ret->internal->mode = s->internal->mode; 2475 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2476 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2477 ret->internal->msg_callback = s->internal->msg_callback; 2478 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2479 SSL_set_verify(ret, SSL_get_verify_mode(s), 2480 SSL_get_verify_callback(s)); 2481 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2482 ret->internal->generate_session_id = s->internal->generate_session_id; 2483 2484 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2485 2486 ret->internal->debug = s->internal->debug; 2487 2488 /* copy app data, a little dangerous perhaps */ 2489 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2490 &ret->internal->ex_data, &s->internal->ex_data)) 2491 goto err; 2492 2493 /* setup rbio, and wbio */ 2494 if (s->rbio != NULL) { 2495 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2496 goto err; 2497 } 2498 if (s->wbio != NULL) { 2499 if (s->wbio != s->rbio) { 2500 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2501 goto err; 2502 } else 2503 ret->wbio = ret->rbio; 2504 } 2505 ret->internal->rwstate = s->internal->rwstate; 2506 ret->internal->in_handshake = s->internal->in_handshake; 2507 ret->internal->handshake_func = s->internal->handshake_func; 2508 ret->server = s->server; 2509 ret->internal->renegotiate = s->internal->renegotiate; 2510 ret->internal->new_session = s->internal->new_session; 2511 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2512 ret->internal->shutdown = s->internal->shutdown; 2513 /* SSL_dup does not really work at any state, though */ 2514 S3I(ret)->hs.state = S3I(s)->hs.state; 2515 ret->internal->rstate = s->internal->rstate; 2516 2517 /* 2518 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2519 * ret->init_off 2520 */ 2521 ret->internal->init_num = 0; 2522 2523 ret->internal->hit = s->internal->hit; 2524 2525 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2526 2527 /* dup the cipher_list and cipher_list_by_id stacks */ 2528 if (s->cipher_list != NULL) { 2529 if ((ret->cipher_list = 2530 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2531 goto err; 2532 } 2533 if (s->internal->cipher_list_by_id != NULL) { 2534 if ((ret->internal->cipher_list_by_id = 2535 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2536 goto err; 2537 } 2538 2539 /* Dup the client_CA list */ 2540 if (s->internal->client_CA != NULL) { 2541 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2542 ret->internal->client_CA = sk; 2543 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2544 xn = sk_X509_NAME_value(sk, i); 2545 if (sk_X509_NAME_set(sk, i, 2546 X509_NAME_dup(xn)) == NULL) { 2547 X509_NAME_free(xn); 2548 goto err; 2549 } 2550 } 2551 } 2552 2553 if (0) { 2554err: 2555 if (ret != NULL) 2556 SSL_free(ret); 2557 ret = NULL; 2558 } 2559 return (ret); 2560} 2561 2562void 2563ssl_clear_cipher_ctx(SSL *s) 2564{ 2565 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2566 s->enc_read_ctx = NULL; 2567 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2568 s->internal->enc_write_ctx = NULL; 2569 2570 if (s->internal->aead_read_ctx != NULL) { 2571 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2572 free(s->internal->aead_read_ctx); 2573 s->internal->aead_read_ctx = NULL; 2574 } 2575 if (s->internal->aead_write_ctx != NULL) { 2576 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2577 free(s->internal->aead_write_ctx); 2578 s->internal->aead_write_ctx = NULL; 2579 } 2580 2581} 2582 2583/* Fix this function so that it takes an optional type parameter */ 2584X509 * 2585SSL_get_certificate(const SSL *s) 2586{ 2587 if (s->cert != NULL) 2588 return (s->cert->key->x509); 2589 else 2590 return (NULL); 2591} 2592 2593/* Fix this function so that it takes an optional type parameter */ 2594EVP_PKEY * 2595SSL_get_privatekey(SSL *s) 2596{ 2597 if (s->cert != NULL) 2598 return (s->cert->key->privatekey); 2599 else 2600 return (NULL); 2601} 2602 2603const SSL_CIPHER * 2604SSL_get_current_cipher(const SSL *s) 2605{ 2606 if ((s->session != NULL) && (s->session->cipher != NULL)) 2607 return (s->session->cipher); 2608 return (NULL); 2609} 2610const void * 2611SSL_get_current_compression(SSL *s) 2612{ 2613 return (NULL); 2614} 2615 2616const void * 2617SSL_get_current_expansion(SSL *s) 2618{ 2619 return (NULL); 2620} 2621 2622int 2623ssl_init_wbio_buffer(SSL *s, int push) 2624{ 2625 BIO *bbio; 2626 2627 if (s->bbio == NULL) { 2628 bbio = BIO_new(BIO_f_buffer()); 2629 if (bbio == NULL) 2630 return (0); 2631 s->bbio = bbio; 2632 } else { 2633 bbio = s->bbio; 2634 if (s->bbio == s->wbio) 2635 s->wbio = BIO_pop(s->wbio); 2636 } 2637 (void)BIO_reset(bbio); 2638/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2639 if (!BIO_set_read_buffer_size(bbio, 1)) { 2640 SSLerror(s, ERR_R_BUF_LIB); 2641 return (0); 2642 } 2643 if (push) { 2644 if (s->wbio != bbio) 2645 s->wbio = BIO_push(bbio, s->wbio); 2646 } else { 2647 if (s->wbio == bbio) 2648 s->wbio = BIO_pop(bbio); 2649 } 2650 return (1); 2651} 2652 2653void 2654ssl_free_wbio_buffer(SSL *s) 2655{ 2656 if (s == NULL) 2657 return; 2658 2659 if (s->bbio == NULL) 2660 return; 2661 2662 if (s->bbio == s->wbio) { 2663 /* remove buffering */ 2664 s->wbio = BIO_pop(s->wbio); 2665 } 2666 BIO_free(s->bbio); 2667 s->bbio = NULL; 2668} 2669 2670void 2671SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2672{ 2673 ctx->internal->quiet_shutdown = mode; 2674} 2675 2676int 2677SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2678{ 2679 return (ctx->internal->quiet_shutdown); 2680} 2681 2682void 2683SSL_set_quiet_shutdown(SSL *s, int mode) 2684{ 2685 s->internal->quiet_shutdown = mode; 2686} 2687 2688int 2689SSL_get_quiet_shutdown(const SSL *s) 2690{ 2691 return (s->internal->quiet_shutdown); 2692} 2693 2694void 2695SSL_set_shutdown(SSL *s, int mode) 2696{ 2697 s->internal->shutdown = mode; 2698} 2699 2700int 2701SSL_get_shutdown(const SSL *s) 2702{ 2703 return (s->internal->shutdown); 2704} 2705 2706int 2707SSL_version(const SSL *s) 2708{ 2709 return (s->version); 2710} 2711 2712SSL_CTX * 2713SSL_get_SSL_CTX(const SSL *ssl) 2714{ 2715 return (ssl->ctx); 2716} 2717 2718SSL_CTX * 2719SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2720{ 2721 CERT *ocert = ssl->cert; 2722 2723 if (ssl->ctx == ctx) 2724 return (ssl->ctx); 2725 if (ctx == NULL) 2726 ctx = ssl->initial_ctx; 2727 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2728 if (ocert != NULL) { 2729 int i; 2730 /* Copy negotiated digests from original certificate. */ 2731 for (i = 0; i < SSL_PKEY_NUM; i++) 2732 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2733 ssl_cert_free(ocert); 2734 } 2735 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2736 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2737 ssl->ctx = ctx; 2738 return (ssl->ctx); 2739} 2740 2741int 2742SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2743{ 2744 return (X509_STORE_set_default_paths(ctx->cert_store)); 2745} 2746 2747int 2748SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2749 const char *CApath) 2750{ 2751 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2752} 2753 2754int 2755SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2756{ 2757 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2758} 2759 2760void 2761SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2762{ 2763 ssl->internal->info_callback = cb; 2764} 2765 2766void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2767{ 2768 return (ssl->internal->info_callback); 2769} 2770 2771int 2772SSL_state(const SSL *ssl) 2773{ 2774 return (S3I(ssl)->hs.state); 2775} 2776 2777void 2778SSL_set_state(SSL *ssl, int state) 2779{ 2780 S3I(ssl)->hs.state = state; 2781} 2782 2783void 2784SSL_set_verify_result(SSL *ssl, long arg) 2785{ 2786 ssl->verify_result = arg; 2787} 2788 2789long 2790SSL_get_verify_result(const SSL *ssl) 2791{ 2792 return (ssl->verify_result); 2793} 2794 2795int 2796SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2797 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2798{ 2799 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2800 new_func, dup_func, free_func)); 2801} 2802 2803int 2804SSL_set_ex_data(SSL *s, int idx, void *arg) 2805{ 2806 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2807} 2808 2809void * 2810SSL_get_ex_data(const SSL *s, int idx) 2811{ 2812 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2813} 2814 2815int 2816SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2817 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2818{ 2819 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2820 new_func, dup_func, free_func)); 2821} 2822 2823int 2824SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2825{ 2826 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2827} 2828 2829void * 2830SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2831{ 2832 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2833} 2834 2835int 2836ssl_ok(SSL *s) 2837{ 2838 return (1); 2839} 2840 2841X509_STORE * 2842SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2843{ 2844 return (ctx->cert_store); 2845} 2846 2847void 2848SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2849{ 2850 X509_STORE_free(ctx->cert_store); 2851 ctx->cert_store = store; 2852} 2853 2854int 2855SSL_want(const SSL *s) 2856{ 2857 return (s->internal->rwstate); 2858} 2859 2860void 2861SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2862 int keylength)) 2863{ 2864 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2865} 2866 2867void 2868SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2869 int keylength)) 2870{ 2871 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2872} 2873 2874void 2875SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2876 int keylength)) 2877{ 2878 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2879} 2880 2881void 2882SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2883 int keylength)) 2884{ 2885 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2886} 2887 2888void 2889SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2890 int is_export, int keylength)) 2891{ 2892 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2893 (void (*)(void))ecdh); 2894} 2895 2896void 2897SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2898 int keylength)) 2899{ 2900 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2901} 2902 2903 2904void 2905SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2906 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2907{ 2908 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2909 (void (*)(void))cb); 2910} 2911 2912void 2913SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2914 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2915{ 2916 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2917} 2918 2919void 2920ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2921{ 2922 if (*hash) 2923 EVP_MD_CTX_destroy(*hash); 2924 *hash = NULL; 2925} 2926 2927void 2928SSL_set_debug(SSL *s, int debug) 2929{ 2930 s->internal->debug = debug; 2931} 2932 2933int 2934SSL_cache_hit(SSL *s) 2935{ 2936 return (s->internal->hit); 2937} 2938 2939int 2940SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2941{ 2942 return ssl_version_set_min(ctx->method, version, 2943 ctx->internal->max_version, &ctx->internal->min_version); 2944} 2945 2946int 2947SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2948{ 2949 return ssl_version_set_max(ctx->method, version, 2950 ctx->internal->min_version, &ctx->internal->max_version); 2951} 2952 2953int 2954SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2955{ 2956 return ssl_version_set_min(ssl->method, version, 2957 ssl->internal->max_version, &ssl->internal->min_version); 2958} 2959 2960int 2961SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2962{ 2963 return ssl_version_set_max(ssl->method, version, 2964 ssl->internal->min_version, &ssl->internal->max_version); 2965} 2966 2967static int 2968ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2969{ 2970 SSL_CIPHER const *a = a_; 2971 SSL_CIPHER const *b = b_; 2972 return ssl_cipher_id_cmp(a, b); 2973} 2974 2975SSL_CIPHER * 2976OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 2977{ 2978 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 2979 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 2980} 2981