ssl_lib.c revision 1.168
1/* $OpenBSD: ssl_lib.c,v 1.168 2017/08/13 17:04:36 doug 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 int failed = 1; 1627 1628 if (protos == NULL || protos_len == 0) 1629 goto err; 1630 1631 free(ctx->internal->alpn_client_proto_list); 1632 ctx->internal->alpn_client_proto_list = NULL; 1633 ctx->internal->alpn_client_proto_list_len = 0; 1634 1635 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1636 == NULL) 1637 goto err; 1638 ctx->internal->alpn_client_proto_list_len = protos_len; 1639 1640 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1641 1642 failed = 0; 1643 1644 err: 1645 /* NOTE: Return values are the reverse of what you expect. */ 1646 return (failed); 1647} 1648 1649/* 1650 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1651 * protocols, which must be in wire-format (i.e. a series of non-empty, 1652 * 8-bit length-prefixed strings). Returns 0 on success. 1653 */ 1654int 1655SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1656 unsigned int protos_len) 1657{ 1658 int failed = 1; 1659 1660 if (protos == NULL || protos_len == 0) 1661 goto err; 1662 1663 free(ssl->internal->alpn_client_proto_list); 1664 ssl->internal->alpn_client_proto_list = NULL; 1665 ssl->internal->alpn_client_proto_list_len = 0; 1666 1667 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1668 == NULL) 1669 goto err; 1670 ssl->internal->alpn_client_proto_list_len = protos_len; 1671 1672 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1673 1674 failed = 0; 1675 1676 err: 1677 /* NOTE: Return values are the reverse of what you expect. */ 1678 return (failed); 1679} 1680 1681/* 1682 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1683 * ClientHello processing in order to select an ALPN protocol from the 1684 * client's list of offered protocols. 1685 */ 1686void 1687SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1688 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1689 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1690{ 1691 ctx->internal->alpn_select_cb = cb; 1692 ctx->internal->alpn_select_cb_arg = arg; 1693} 1694 1695/* 1696 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1697 * it sets data to point to len bytes of protocol name (not including the 1698 * leading length-prefix byte). If the server didn't respond with* a negotiated 1699 * protocol then len will be zero. 1700 */ 1701void 1702SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1703 unsigned *len) 1704{ 1705 *data = NULL; 1706 *len = 0; 1707 1708 if (ssl->s3 != NULL) { 1709 *data = ssl->s3->internal->alpn_selected; 1710 *len = ssl->s3->internal->alpn_selected_len; 1711 } 1712} 1713 1714int 1715SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1716 const char *label, size_t llen, const unsigned char *p, size_t plen, 1717 int use_context) 1718{ 1719 return (tls1_export_keying_material(s, out, olen, 1720 label, llen, p, plen, use_context)); 1721} 1722 1723static unsigned long 1724ssl_session_hash(const SSL_SESSION *a) 1725{ 1726 unsigned long l; 1727 1728 l = (unsigned long) 1729 ((unsigned int) a->session_id[0] )| 1730 ((unsigned int) a->session_id[1]<< 8L)| 1731 ((unsigned long)a->session_id[2]<<16L)| 1732 ((unsigned long)a->session_id[3]<<24L); 1733 return (l); 1734} 1735 1736/* 1737 * NB: If this function (or indeed the hash function which uses a sort of 1738 * coarser function than this one) is changed, ensure 1739 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1740 * able to construct an SSL_SESSION that will collide with any existing session 1741 * with a matching session ID. 1742 */ 1743static int 1744ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1745{ 1746 if (a->ssl_version != b->ssl_version) 1747 return (1); 1748 if (a->session_id_length != b->session_id_length) 1749 return (1); 1750 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1751 return (1); 1752 return (0); 1753} 1754 1755/* 1756 * These wrapper functions should remain rather than redeclaring 1757 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1758 * variable. The reason is that the functions aren't static, they're exposed via 1759 * ssl.h. 1760 */ 1761static unsigned long 1762ssl_session_LHASH_HASH(const void *arg) 1763{ 1764 const SSL_SESSION *a = arg; 1765 1766 return ssl_session_hash(a); 1767} 1768 1769static int 1770ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1771{ 1772 const SSL_SESSION *a = arg1; 1773 const SSL_SESSION *b = arg2; 1774 1775 return ssl_session_cmp(a, b); 1776} 1777 1778SSL_CTX * 1779SSL_CTX_new(const SSL_METHOD *meth) 1780{ 1781 SSL_CTX *ret; 1782 1783 if (meth == NULL) { 1784 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1785 return (NULL); 1786 } 1787 1788 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1789 SSLerrorx(ERR_R_MALLOC_FAILURE); 1790 return (NULL); 1791 } 1792 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1793 free(ret); 1794 SSLerrorx(ERR_R_MALLOC_FAILURE); 1795 return (NULL); 1796 } 1797 1798 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1799 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1800 goto err; 1801 } 1802 1803 ret->method = meth; 1804 ret->internal->min_version = meth->internal->min_version; 1805 ret->internal->max_version = meth->internal->max_version; 1806 1807 ret->cert_store = NULL; 1808 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1809 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1810 ret->internal->session_cache_head = NULL; 1811 ret->internal->session_cache_tail = NULL; 1812 1813 /* We take the system default */ 1814 ret->session_timeout = meth->internal->get_timeout(); 1815 1816 ret->internal->new_session_cb = 0; 1817 ret->internal->remove_session_cb = 0; 1818 ret->internal->get_session_cb = 0; 1819 ret->internal->generate_session_id = 0; 1820 1821 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1822 1823 ret->references = 1; 1824 ret->internal->quiet_shutdown = 0; 1825 1826 ret->internal->info_callback = NULL; 1827 1828 ret->internal->app_verify_callback = 0; 1829 ret->internal->app_verify_arg = NULL; 1830 1831 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1832 ret->internal->read_ahead = 0; 1833 ret->internal->msg_callback = 0; 1834 ret->internal->msg_callback_arg = NULL; 1835 ret->verify_mode = SSL_VERIFY_NONE; 1836 ret->sid_ctx_length = 0; 1837 ret->internal->default_verify_callback = NULL; 1838 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1839 goto err; 1840 1841 ret->default_passwd_callback = 0; 1842 ret->default_passwd_callback_userdata = NULL; 1843 ret->internal->client_cert_cb = 0; 1844 ret->internal->app_gen_cookie_cb = 0; 1845 ret->internal->app_verify_cookie_cb = 0; 1846 1847 ret->internal->sessions = lh_SSL_SESSION_new(); 1848 if (ret->internal->sessions == NULL) 1849 goto err; 1850 ret->cert_store = X509_STORE_new(); 1851 if (ret->cert_store == NULL) 1852 goto err; 1853 1854 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1855 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1856 if (ret->cipher_list == NULL || 1857 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1858 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1859 goto err2; 1860 } 1861 1862 ret->param = X509_VERIFY_PARAM_new(); 1863 if (!ret->param) 1864 goto err; 1865 1866 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1867 goto err; 1868 1869 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1870 1871 ret->extra_certs = NULL; 1872 1873 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1874 1875 ret->internal->tlsext_servername_callback = 0; 1876 ret->internal->tlsext_servername_arg = NULL; 1877 1878 /* Setup RFC4507 ticket keys */ 1879 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1880 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1881 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1882 1883 ret->internal->tlsext_status_cb = 0; 1884 ret->internal->tlsext_status_arg = NULL; 1885 1886#ifndef OPENSSL_NO_ENGINE 1887 ret->internal->client_cert_engine = NULL; 1888#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1889#define eng_strx(x) #x 1890#define eng_str(x) eng_strx(x) 1891 /* Use specific client engine automatically... ignore errors */ 1892 { 1893 ENGINE *eng; 1894 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1895 if (!eng) { 1896 ERR_clear_error(); 1897 ENGINE_load_builtin_engines(); 1898 eng = ENGINE_by_id(eng_str( 1899 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1900 } 1901 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1902 ERR_clear_error(); 1903 } 1904#endif 1905#endif 1906 /* 1907 * Default is to connect to non-RI servers. When RI is more widely 1908 * deployed might change this. 1909 */ 1910 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1911 1912 return (ret); 1913err: 1914 SSLerrorx(ERR_R_MALLOC_FAILURE); 1915err2: 1916 SSL_CTX_free(ret); 1917 return (NULL); 1918} 1919 1920void 1921SSL_CTX_free(SSL_CTX *ctx) 1922{ 1923 int i; 1924 1925 if (ctx == NULL) 1926 return; 1927 1928 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1929 if (i > 0) 1930 return; 1931 1932 X509_VERIFY_PARAM_free(ctx->param); 1933 1934 /* 1935 * Free internal session cache. However: the remove_cb() may reference 1936 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1937 * after the sessions were flushed. 1938 * As the ex_data handling routines might also touch the session cache, 1939 * the most secure solution seems to be: empty (flush) the cache, then 1940 * free ex_data, then finally free the cache. 1941 * (See ticket [openssl.org #212].) 1942 */ 1943 if (ctx->internal->sessions != NULL) 1944 SSL_CTX_flush_sessions(ctx, 0); 1945 1946 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1947 1948 lh_SSL_SESSION_free(ctx->internal->sessions); 1949 1950 X509_STORE_free(ctx->cert_store); 1951 sk_SSL_CIPHER_free(ctx->cipher_list); 1952 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1953 ssl_cert_free(ctx->internal->cert); 1954 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1955 sk_X509_pop_free(ctx->extra_certs, X509_free); 1956 1957#ifndef OPENSSL_NO_SRTP 1958 if (ctx->internal->srtp_profiles) 1959 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1960#endif 1961 1962#ifndef OPENSSL_NO_ENGINE 1963 if (ctx->internal->client_cert_engine) 1964 ENGINE_finish(ctx->internal->client_cert_engine); 1965#endif 1966 1967 free(ctx->internal->tlsext_ecpointformatlist); 1968 free(ctx->internal->tlsext_supportedgroups); 1969 1970 free(ctx->internal->alpn_client_proto_list); 1971 1972 free(ctx->internal); 1973 free(ctx); 1974} 1975 1976void 1977SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1978{ 1979 ctx->default_passwd_callback = cb; 1980} 1981 1982void 1983SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1984{ 1985 ctx->default_passwd_callback_userdata = u; 1986} 1987 1988void 1989SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1990 void *), void *arg) 1991{ 1992 ctx->internal->app_verify_callback = cb; 1993 ctx->internal->app_verify_arg = arg; 1994} 1995 1996void 1997SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1998{ 1999 ctx->verify_mode = mode; 2000 ctx->internal->default_verify_callback = cb; 2001} 2002 2003void 2004SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2005{ 2006 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2007} 2008 2009void 2010ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2011{ 2012 int rsa_enc, rsa_sign, dh_tmp; 2013 int have_ecc_cert; 2014 unsigned long mask_k, mask_a; 2015 X509 *x = NULL; 2016 CERT_PKEY *cpk; 2017 2018 if (c == NULL) 2019 return; 2020 2021 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2022 c->dh_tmp_auto != 0); 2023 2024 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2025 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2026 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2027 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2028 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2029 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2030 2031 mask_k = 0; 2032 mask_a = 0; 2033 2034 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2035 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2036 mask_k |= SSL_kGOST; 2037 mask_a |= SSL_aGOST01; 2038 } 2039 2040 if (rsa_enc) 2041 mask_k |= SSL_kRSA; 2042 2043 if (dh_tmp) 2044 mask_k |= SSL_kDHE; 2045 2046 if (rsa_enc || rsa_sign) 2047 mask_a |= SSL_aRSA; 2048 2049 mask_a |= SSL_aNULL; 2050 2051 /* 2052 * An ECC certificate may be usable for ECDH and/or 2053 * ECDSA cipher suites depending on the key usage extension. 2054 */ 2055 if (have_ecc_cert) { 2056 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2057 2058 /* This call populates extension flags (ex_flags). */ 2059 X509_check_purpose(x, -1, 0); 2060 2061 /* Key usage, if present, must allow signing. */ 2062 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2063 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2064 mask_a |= SSL_aECDSA; 2065 } 2066 2067 mask_k |= SSL_kECDHE; 2068 2069 c->mask_k = mask_k; 2070 c->mask_a = mask_a; 2071 c->valid = 1; 2072} 2073 2074/* See if this handshake is using an ECC cipher suite. */ 2075int 2076ssl_using_ecc_cipher(SSL *s) 2077{ 2078 unsigned long alg_a, alg_k; 2079 2080 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2081 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2082 2083 return SSI(s)->tlsext_ecpointformatlist != NULL && 2084 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2085 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2086} 2087 2088int 2089ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2090{ 2091 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2092 unsigned long alg_a; 2093 2094 alg_a = cs->algorithm_auth; 2095 2096 if (alg_a & SSL_aECDSA) { 2097 /* This call populates extension flags (ex_flags). */ 2098 X509_check_purpose(x, -1, 0); 2099 2100 /* Key usage, if present, must allow signing. */ 2101 if ((x->ex_flags & EXFLAG_KUSAGE) && 2102 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2103 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2104 return (0); 2105 } 2106 } 2107 2108 return (1); 2109} 2110 2111CERT_PKEY * 2112ssl_get_server_send_pkey(const SSL *s) 2113{ 2114 unsigned long alg_a; 2115 CERT *c; 2116 int i; 2117 2118 c = s->cert; 2119 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2120 2121 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2122 2123 if (alg_a & SSL_aECDSA) { 2124 i = SSL_PKEY_ECC; 2125 } else if (alg_a & SSL_aRSA) { 2126 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2127 i = SSL_PKEY_RSA_SIGN; 2128 else 2129 i = SSL_PKEY_RSA_ENC; 2130 } else if (alg_a & SSL_aGOST01) { 2131 i = SSL_PKEY_GOST01; 2132 } else { /* if (alg_a & SSL_aNULL) */ 2133 SSLerror(s, ERR_R_INTERNAL_ERROR); 2134 return (NULL); 2135 } 2136 2137 return (c->pkeys + i); 2138} 2139 2140X509 * 2141ssl_get_server_send_cert(const SSL *s) 2142{ 2143 CERT_PKEY *cpk; 2144 2145 cpk = ssl_get_server_send_pkey(s); 2146 if (!cpk) 2147 return (NULL); 2148 return (cpk->x509); 2149} 2150 2151EVP_PKEY * 2152ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2153{ 2154 unsigned long alg_a; 2155 CERT *c; 2156 int idx = -1; 2157 2158 alg_a = cipher->algorithm_auth; 2159 c = s->cert; 2160 2161 if (alg_a & SSL_aRSA) { 2162 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2163 idx = SSL_PKEY_RSA_SIGN; 2164 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2165 idx = SSL_PKEY_RSA_ENC; 2166 } else if ((alg_a & SSL_aECDSA) && 2167 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2168 idx = SSL_PKEY_ECC; 2169 if (idx == -1) { 2170 SSLerror(s, ERR_R_INTERNAL_ERROR); 2171 return (NULL); 2172 } 2173 if (pmd) 2174 *pmd = c->pkeys[idx].digest; 2175 return (c->pkeys[idx].privatekey); 2176} 2177 2178DH * 2179ssl_get_auto_dh(SSL *s) 2180{ 2181 CERT_PKEY *cpk; 2182 int keylen; 2183 DH *dhp; 2184 2185 if (s->cert->dh_tmp_auto == 2) { 2186 keylen = 1024; 2187 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2188 keylen = 1024; 2189 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2190 keylen = 3072; 2191 } else { 2192 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2193 return (NULL); 2194 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2195 return (NULL); 2196 keylen = EVP_PKEY_bits(cpk->privatekey); 2197 } 2198 2199 if ((dhp = DH_new()) == NULL) 2200 return (NULL); 2201 2202 dhp->g = BN_new(); 2203 if (dhp->g != NULL) 2204 BN_set_word(dhp->g, 2); 2205 2206 if (keylen >= 8192) 2207 dhp->p = get_rfc3526_prime_8192(NULL); 2208 else if (keylen >= 4096) 2209 dhp->p = get_rfc3526_prime_4096(NULL); 2210 else if (keylen >= 3072) 2211 dhp->p = get_rfc3526_prime_3072(NULL); 2212 else if (keylen >= 2048) 2213 dhp->p = get_rfc3526_prime_2048(NULL); 2214 else if (keylen >= 1536) 2215 dhp->p = get_rfc3526_prime_1536(NULL); 2216 else 2217 dhp->p = get_rfc2409_prime_1024(NULL); 2218 2219 if (dhp->p == NULL || dhp->g == NULL) { 2220 DH_free(dhp); 2221 return (NULL); 2222 } 2223 return (dhp); 2224} 2225 2226void 2227ssl_update_cache(SSL *s, int mode) 2228{ 2229 int i; 2230 2231 /* 2232 * If the session_id_length is 0, we are not supposed to cache it, 2233 * and it would be rather hard to do anyway :-) 2234 */ 2235 if (s->session->session_id_length == 0) 2236 return; 2237 2238 i = s->session_ctx->internal->session_cache_mode; 2239 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2240 || SSL_CTX_add_session(s->session_ctx, s->session)) 2241 && (s->session_ctx->internal->new_session_cb != NULL)) { 2242 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2243 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2244 SSL_SESSION_free(s->session); 2245 } 2246 2247 /* auto flush every 255 connections */ 2248 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2249 ((i & mode) == mode)) { 2250 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2251 s->session_ctx->internal->stats.sess_connect_good : 2252 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2253 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2254 } 2255 } 2256} 2257 2258const SSL_METHOD * 2259SSL_get_ssl_method(SSL *s) 2260{ 2261 return (s->method); 2262} 2263 2264int 2265SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2266{ 2267 int conn = -1; 2268 int ret = 1; 2269 2270 if (s->method != meth) { 2271 if (s->internal->handshake_func != NULL) 2272 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2273 2274 if (s->method->internal->version == meth->internal->version) 2275 s->method = meth; 2276 else { 2277 s->method->internal->ssl_free(s); 2278 s->method = meth; 2279 ret = s->method->internal->ssl_new(s); 2280 } 2281 2282 if (conn == 1) 2283 s->internal->handshake_func = meth->internal->ssl_connect; 2284 else if (conn == 0) 2285 s->internal->handshake_func = meth->internal->ssl_accept; 2286 } 2287 return (ret); 2288} 2289 2290int 2291SSL_get_error(const SSL *s, int i) 2292{ 2293 int reason; 2294 unsigned long l; 2295 BIO *bio; 2296 2297 if (i > 0) 2298 return (SSL_ERROR_NONE); 2299 2300 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2301 * etc, where we do encode the error */ 2302 if ((l = ERR_peek_error()) != 0) { 2303 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2304 return (SSL_ERROR_SYSCALL); 2305 else 2306 return (SSL_ERROR_SSL); 2307 } 2308 2309 if ((i < 0) && SSL_want_read(s)) { 2310 bio = SSL_get_rbio(s); 2311 if (BIO_should_read(bio)) { 2312 return (SSL_ERROR_WANT_READ); 2313 } else if (BIO_should_write(bio)) { 2314 /* 2315 * This one doesn't make too much sense... We never 2316 * try to write to the rbio, and an application 2317 * program where rbio and wbio are separate couldn't 2318 * even know what it should wait for. However if we 2319 * ever set s->internal->rwstate incorrectly (so that we have 2320 * SSL_want_read(s) instead of SSL_want_write(s)) 2321 * and rbio and wbio *are* the same, this test works 2322 * around that bug; so it might be safer to keep it. 2323 */ 2324 return (SSL_ERROR_WANT_WRITE); 2325 } else if (BIO_should_io_special(bio)) { 2326 reason = BIO_get_retry_reason(bio); 2327 if (reason == BIO_RR_CONNECT) 2328 return (SSL_ERROR_WANT_CONNECT); 2329 else if (reason == BIO_RR_ACCEPT) 2330 return (SSL_ERROR_WANT_ACCEPT); 2331 else 2332 return (SSL_ERROR_SYSCALL); /* unknown */ 2333 } 2334 } 2335 2336 if ((i < 0) && SSL_want_write(s)) { 2337 bio = SSL_get_wbio(s); 2338 if (BIO_should_write(bio)) { 2339 return (SSL_ERROR_WANT_WRITE); 2340 } else if (BIO_should_read(bio)) { 2341 /* 2342 * See above (SSL_want_read(s) with 2343 * BIO_should_write(bio)) 2344 */ 2345 return (SSL_ERROR_WANT_READ); 2346 } else if (BIO_should_io_special(bio)) { 2347 reason = BIO_get_retry_reason(bio); 2348 if (reason == BIO_RR_CONNECT) 2349 return (SSL_ERROR_WANT_CONNECT); 2350 else if (reason == BIO_RR_ACCEPT) 2351 return (SSL_ERROR_WANT_ACCEPT); 2352 else 2353 return (SSL_ERROR_SYSCALL); 2354 } 2355 } 2356 if ((i < 0) && SSL_want_x509_lookup(s)) { 2357 return (SSL_ERROR_WANT_X509_LOOKUP); 2358 } 2359 2360 if (i == 0) { 2361 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2362 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2363 return (SSL_ERROR_ZERO_RETURN); 2364 } 2365 return (SSL_ERROR_SYSCALL); 2366} 2367 2368int 2369SSL_do_handshake(SSL *s) 2370{ 2371 int ret = 1; 2372 2373 if (s->internal->handshake_func == NULL) { 2374 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2375 return (-1); 2376 } 2377 2378 s->method->internal->ssl_renegotiate_check(s); 2379 2380 if (SSL_in_init(s) || SSL_in_before(s)) { 2381 ret = s->internal->handshake_func(s); 2382 } 2383 return (ret); 2384} 2385 2386/* 2387 * For the next 2 functions, SSL_clear() sets shutdown and so 2388 * one of these calls will reset it 2389 */ 2390void 2391SSL_set_accept_state(SSL *s) 2392{ 2393 s->server = 1; 2394 s->internal->shutdown = 0; 2395 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2396 s->internal->handshake_func = s->method->internal->ssl_accept; 2397 /* clear the current cipher */ 2398 ssl_clear_cipher_ctx(s); 2399 ssl_clear_hash_ctx(&s->read_hash); 2400 ssl_clear_hash_ctx(&s->internal->write_hash); 2401} 2402 2403void 2404SSL_set_connect_state(SSL *s) 2405{ 2406 s->server = 0; 2407 s->internal->shutdown = 0; 2408 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2409 s->internal->handshake_func = s->method->internal->ssl_connect; 2410 /* clear the current cipher */ 2411 ssl_clear_cipher_ctx(s); 2412 ssl_clear_hash_ctx(&s->read_hash); 2413 ssl_clear_hash_ctx(&s->internal->write_hash); 2414} 2415 2416int 2417ssl_undefined_function(SSL *s) 2418{ 2419 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2420 return (0); 2421} 2422 2423int 2424ssl_undefined_void_function(void) 2425{ 2426 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2427 return (0); 2428} 2429 2430int 2431ssl_undefined_const_function(const SSL *s) 2432{ 2433 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2434 return (0); 2435} 2436 2437const char * 2438ssl_version_string(int ver) 2439{ 2440 switch (ver) { 2441 case DTLS1_VERSION: 2442 return (SSL_TXT_DTLS1); 2443 case TLS1_VERSION: 2444 return (SSL_TXT_TLSV1); 2445 case TLS1_1_VERSION: 2446 return (SSL_TXT_TLSV1_1); 2447 case TLS1_2_VERSION: 2448 return (SSL_TXT_TLSV1_2); 2449 default: 2450 return ("unknown"); 2451 } 2452} 2453 2454const char * 2455SSL_get_version(const SSL *s) 2456{ 2457 return ssl_version_string(s->version); 2458} 2459 2460SSL * 2461SSL_dup(SSL *s) 2462{ 2463 STACK_OF(X509_NAME) *sk; 2464 X509_NAME *xn; 2465 SSL *ret; 2466 int i; 2467 2468 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2469 return (NULL); 2470 2471 ret->version = s->version; 2472 ret->internal->type = s->internal->type; 2473 ret->method = s->method; 2474 2475 if (s->session != NULL) { 2476 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2477 SSL_copy_session_id(ret, s); 2478 } else { 2479 /* 2480 * No session has been established yet, so we have to expect 2481 * that s->cert or ret->cert will be changed later -- 2482 * they should not both point to the same object, 2483 * and thus we can't use SSL_copy_session_id. 2484 */ 2485 2486 ret->method->internal->ssl_free(ret); 2487 ret->method = s->method; 2488 ret->method->internal->ssl_new(ret); 2489 2490 if (s->cert != NULL) { 2491 ssl_cert_free(ret->cert); 2492 ret->cert = ssl_cert_dup(s->cert); 2493 if (ret->cert == NULL) 2494 goto err; 2495 } 2496 2497 SSL_set_session_id_context(ret, 2498 s->sid_ctx, s->sid_ctx_length); 2499 } 2500 2501 ret->internal->options = s->internal->options; 2502 ret->internal->mode = s->internal->mode; 2503 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2504 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2505 ret->internal->msg_callback = s->internal->msg_callback; 2506 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2507 SSL_set_verify(ret, SSL_get_verify_mode(s), 2508 SSL_get_verify_callback(s)); 2509 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2510 ret->internal->generate_session_id = s->internal->generate_session_id; 2511 2512 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2513 2514 ret->internal->debug = s->internal->debug; 2515 2516 /* copy app data, a little dangerous perhaps */ 2517 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2518 &ret->internal->ex_data, &s->internal->ex_data)) 2519 goto err; 2520 2521 /* setup rbio, and wbio */ 2522 if (s->rbio != NULL) { 2523 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2524 goto err; 2525 } 2526 if (s->wbio != NULL) { 2527 if (s->wbio != s->rbio) { 2528 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2529 goto err; 2530 } else 2531 ret->wbio = ret->rbio; 2532 } 2533 ret->internal->rwstate = s->internal->rwstate; 2534 ret->internal->in_handshake = s->internal->in_handshake; 2535 ret->internal->handshake_func = s->internal->handshake_func; 2536 ret->server = s->server; 2537 ret->internal->renegotiate = s->internal->renegotiate; 2538 ret->internal->new_session = s->internal->new_session; 2539 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2540 ret->internal->shutdown = s->internal->shutdown; 2541 /* SSL_dup does not really work at any state, though */ 2542 S3I(ret)->hs.state = S3I(s)->hs.state; 2543 ret->internal->rstate = s->internal->rstate; 2544 2545 /* 2546 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2547 * ret->init_off 2548 */ 2549 ret->internal->init_num = 0; 2550 2551 ret->internal->hit = s->internal->hit; 2552 2553 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2554 2555 /* dup the cipher_list and cipher_list_by_id stacks */ 2556 if (s->cipher_list != NULL) { 2557 if ((ret->cipher_list = 2558 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2559 goto err; 2560 } 2561 if (s->internal->cipher_list_by_id != NULL) { 2562 if ((ret->internal->cipher_list_by_id = 2563 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2564 goto err; 2565 } 2566 2567 /* Dup the client_CA list */ 2568 if (s->internal->client_CA != NULL) { 2569 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2570 ret->internal->client_CA = sk; 2571 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2572 xn = sk_X509_NAME_value(sk, i); 2573 if (sk_X509_NAME_set(sk, i, 2574 X509_NAME_dup(xn)) == NULL) { 2575 X509_NAME_free(xn); 2576 goto err; 2577 } 2578 } 2579 } 2580 2581 if (0) { 2582err: 2583 if (ret != NULL) 2584 SSL_free(ret); 2585 ret = NULL; 2586 } 2587 return (ret); 2588} 2589 2590void 2591ssl_clear_cipher_ctx(SSL *s) 2592{ 2593 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2594 s->enc_read_ctx = NULL; 2595 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2596 s->internal->enc_write_ctx = NULL; 2597 2598 if (s->internal->aead_read_ctx != NULL) { 2599 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2600 free(s->internal->aead_read_ctx); 2601 s->internal->aead_read_ctx = NULL; 2602 } 2603 if (s->internal->aead_write_ctx != NULL) { 2604 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2605 free(s->internal->aead_write_ctx); 2606 s->internal->aead_write_ctx = NULL; 2607 } 2608 2609} 2610 2611/* Fix this function so that it takes an optional type parameter */ 2612X509 * 2613SSL_get_certificate(const SSL *s) 2614{ 2615 if (s->cert != NULL) 2616 return (s->cert->key->x509); 2617 else 2618 return (NULL); 2619} 2620 2621/* Fix this function so that it takes an optional type parameter */ 2622EVP_PKEY * 2623SSL_get_privatekey(SSL *s) 2624{ 2625 if (s->cert != NULL) 2626 return (s->cert->key->privatekey); 2627 else 2628 return (NULL); 2629} 2630 2631const SSL_CIPHER * 2632SSL_get_current_cipher(const SSL *s) 2633{ 2634 if ((s->session != NULL) && (s->session->cipher != NULL)) 2635 return (s->session->cipher); 2636 return (NULL); 2637} 2638const void * 2639SSL_get_current_compression(SSL *s) 2640{ 2641 return (NULL); 2642} 2643 2644const void * 2645SSL_get_current_expansion(SSL *s) 2646{ 2647 return (NULL); 2648} 2649 2650int 2651ssl_init_wbio_buffer(SSL *s, int push) 2652{ 2653 BIO *bbio; 2654 2655 if (s->bbio == NULL) { 2656 bbio = BIO_new(BIO_f_buffer()); 2657 if (bbio == NULL) 2658 return (0); 2659 s->bbio = bbio; 2660 } else { 2661 bbio = s->bbio; 2662 if (s->bbio == s->wbio) 2663 s->wbio = BIO_pop(s->wbio); 2664 } 2665 (void)BIO_reset(bbio); 2666/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2667 if (!BIO_set_read_buffer_size(bbio, 1)) { 2668 SSLerror(s, ERR_R_BUF_LIB); 2669 return (0); 2670 } 2671 if (push) { 2672 if (s->wbio != bbio) 2673 s->wbio = BIO_push(bbio, s->wbio); 2674 } else { 2675 if (s->wbio == bbio) 2676 s->wbio = BIO_pop(bbio); 2677 } 2678 return (1); 2679} 2680 2681void 2682ssl_free_wbio_buffer(SSL *s) 2683{ 2684 if (s == NULL) 2685 return; 2686 2687 if (s->bbio == NULL) 2688 return; 2689 2690 if (s->bbio == s->wbio) { 2691 /* remove buffering */ 2692 s->wbio = BIO_pop(s->wbio); 2693 } 2694 BIO_free(s->bbio); 2695 s->bbio = NULL; 2696} 2697 2698void 2699SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2700{ 2701 ctx->internal->quiet_shutdown = mode; 2702} 2703 2704int 2705SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2706{ 2707 return (ctx->internal->quiet_shutdown); 2708} 2709 2710void 2711SSL_set_quiet_shutdown(SSL *s, int mode) 2712{ 2713 s->internal->quiet_shutdown = mode; 2714} 2715 2716int 2717SSL_get_quiet_shutdown(const SSL *s) 2718{ 2719 return (s->internal->quiet_shutdown); 2720} 2721 2722void 2723SSL_set_shutdown(SSL *s, int mode) 2724{ 2725 s->internal->shutdown = mode; 2726} 2727 2728int 2729SSL_get_shutdown(const SSL *s) 2730{ 2731 return (s->internal->shutdown); 2732} 2733 2734int 2735SSL_version(const SSL *s) 2736{ 2737 return (s->version); 2738} 2739 2740SSL_CTX * 2741SSL_get_SSL_CTX(const SSL *ssl) 2742{ 2743 return (ssl->ctx); 2744} 2745 2746SSL_CTX * 2747SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2748{ 2749 CERT *ocert = ssl->cert; 2750 2751 if (ssl->ctx == ctx) 2752 return (ssl->ctx); 2753 if (ctx == NULL) 2754 ctx = ssl->initial_ctx; 2755 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2756 if (ocert != NULL) { 2757 int i; 2758 /* Copy negotiated digests from original certificate. */ 2759 for (i = 0; i < SSL_PKEY_NUM; i++) 2760 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2761 ssl_cert_free(ocert); 2762 } 2763 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2764 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2765 ssl->ctx = ctx; 2766 return (ssl->ctx); 2767} 2768 2769int 2770SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2771{ 2772 return (X509_STORE_set_default_paths(ctx->cert_store)); 2773} 2774 2775int 2776SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2777 const char *CApath) 2778{ 2779 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2780} 2781 2782int 2783SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2784{ 2785 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2786} 2787 2788void 2789SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2790{ 2791 ssl->internal->info_callback = cb; 2792} 2793 2794void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2795{ 2796 return (ssl->internal->info_callback); 2797} 2798 2799int 2800SSL_state(const SSL *ssl) 2801{ 2802 return (S3I(ssl)->hs.state); 2803} 2804 2805void 2806SSL_set_state(SSL *ssl, int state) 2807{ 2808 S3I(ssl)->hs.state = state; 2809} 2810 2811void 2812SSL_set_verify_result(SSL *ssl, long arg) 2813{ 2814 ssl->verify_result = arg; 2815} 2816 2817long 2818SSL_get_verify_result(const SSL *ssl) 2819{ 2820 return (ssl->verify_result); 2821} 2822 2823int 2824SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2825 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2826{ 2827 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2828 new_func, dup_func, free_func)); 2829} 2830 2831int 2832SSL_set_ex_data(SSL *s, int idx, void *arg) 2833{ 2834 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2835} 2836 2837void * 2838SSL_get_ex_data(const SSL *s, int idx) 2839{ 2840 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2841} 2842 2843int 2844SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2845 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2846{ 2847 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2848 new_func, dup_func, free_func)); 2849} 2850 2851int 2852SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2853{ 2854 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2855} 2856 2857void * 2858SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2859{ 2860 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2861} 2862 2863int 2864ssl_ok(SSL *s) 2865{ 2866 return (1); 2867} 2868 2869X509_STORE * 2870SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2871{ 2872 return (ctx->cert_store); 2873} 2874 2875void 2876SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2877{ 2878 X509_STORE_free(ctx->cert_store); 2879 ctx->cert_store = store; 2880} 2881 2882int 2883SSL_want(const SSL *s) 2884{ 2885 return (s->internal->rwstate); 2886} 2887 2888void 2889SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2890 int keylength)) 2891{ 2892 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2893} 2894 2895void 2896SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2897 int keylength)) 2898{ 2899 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2900} 2901 2902void 2903SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2904 int keylength)) 2905{ 2906 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2907} 2908 2909void 2910SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2911 int keylength)) 2912{ 2913 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2914} 2915 2916void 2917SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2918 int is_export, int keylength)) 2919{ 2920 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2921 (void (*)(void))ecdh); 2922} 2923 2924void 2925SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2926 int keylength)) 2927{ 2928 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2929} 2930 2931 2932void 2933SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2934 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2935{ 2936 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2937 (void (*)(void))cb); 2938} 2939 2940void 2941SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2942 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2943{ 2944 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2945} 2946 2947void 2948ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2949{ 2950 if (*hash) 2951 EVP_MD_CTX_destroy(*hash); 2952 *hash = NULL; 2953} 2954 2955void 2956SSL_set_debug(SSL *s, int debug) 2957{ 2958 s->internal->debug = debug; 2959} 2960 2961int 2962SSL_cache_hit(SSL *s) 2963{ 2964 return (s->internal->hit); 2965} 2966 2967int 2968SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2969{ 2970 return ssl_version_set_min(ctx->method, version, 2971 ctx->internal->max_version, &ctx->internal->min_version); 2972} 2973 2974int 2975SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2976{ 2977 return ssl_version_set_max(ctx->method, version, 2978 ctx->internal->min_version, &ctx->internal->max_version); 2979} 2980 2981int 2982SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2983{ 2984 return ssl_version_set_min(ssl->method, version, 2985 ssl->internal->max_version, &ssl->internal->min_version); 2986} 2987 2988int 2989SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2990{ 2991 return ssl_version_set_max(ssl->method, version, 2992 ssl->internal->min_version, &ssl->internal->max_version); 2993} 2994 2995static int 2996ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2997{ 2998 SSL_CIPHER const *a = a_; 2999 SSL_CIPHER const *b = b_; 3000 return ssl_cipher_id_cmp(a, b); 3001} 3002 3003SSL_CIPHER * 3004OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3005{ 3006 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3007 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3008} 3009