ssl_lib.c revision 1.120
1/* $OpenBSD: ssl_lib.c,v 1.120 2016/11/02 10:45:02 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 162SSL3_ENC_METHOD ssl3_undef_enc_method = { 163 /* 164 * Evil casts, but these functions are only called if there's a 165 * library bug. 166 */ 167 .enc = (int (*)(SSL *, int))ssl_undefined_function, 168 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 169 .setup_key_block = ssl_undefined_function, 170 .generate_master_secret = (int (*)(SSL *, unsigned char *, 171 unsigned char *, int))ssl_undefined_function, 172 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 173 .final_finish_mac = (int (*)(SSL *, const char*, int, 174 unsigned char *))ssl_undefined_function, 175 .finish_mac_length = 0, 176 .cert_verify_mac = (int (*)(SSL *, int, 177 unsigned char *))ssl_undefined_function, 178 .client_finished_label = NULL, 179 .client_finished_label_len = 0, 180 .server_finished_label = NULL, 181 .server_finished_label_len = 0, 182 .alert_value = (int (*)(int))ssl_undefined_function, 183 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 184 const char *, size_t, const unsigned char *, size_t, 185 int use_context))ssl_undefined_function, 186 .enc_flags = 0, 187}; 188 189int 190SSL_clear(SSL *s) 191{ 192 if (s->method == NULL) { 193 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 194 return (0); 195 } 196 197 if (ssl_clear_bad_session(s)) { 198 SSL_SESSION_free(s->session); 199 s->session = NULL; 200 } 201 202 s->error = 0; 203 s->hit = 0; 204 s->shutdown = 0; 205 206 if (s->renegotiate) { 207 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 208 return (0); 209 } 210 211 s->type = 0; 212 213 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 s->version = s->method->version; 216 s->client_version = s->version; 217 s->rwstate = SSL_NOTHING; 218 s->rstate = SSL_ST_READ_HEADER; 219 220 BUF_MEM_free(s->init_buf); 221 s->init_buf = NULL; 222 223 ssl_clear_cipher_ctx(s); 224 ssl_clear_hash_ctx(&s->read_hash); 225 ssl_clear_hash_ctx(&s->write_hash); 226 227 s->first_packet = 0; 228 229 /* 230 * Check to see if we were changed into a different method, if 231 * so, revert back if we are not doing session-id reuse. 232 */ 233 if (!s->in_handshake && (s->session == NULL) && 234 (s->method != s->ctx->method)) { 235 s->method->ssl_free(s); 236 s->method = s->ctx->method; 237 if (!s->method->ssl_new(s)) 238 return (0); 239 } else 240 s->method->ssl_clear(s); 241 242 return (1); 243} 244 245/* Used to change an SSL_CTXs default SSL method type */ 246int 247SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 248{ 249 STACK_OF(SSL_CIPHER) *sk; 250 251 ctx->method = meth; 252 253 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 254 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 255 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 256 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 257 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 258 return (0); 259 } 260 return (1); 261} 262 263SSL * 264SSL_new(SSL_CTX *ctx) 265{ 266 SSL *s; 267 268 if (ctx == NULL) { 269 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 270 return (NULL); 271 } 272 if (ctx->method == NULL) { 273 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 274 return (NULL); 275 } 276 277 s = calloc(1, sizeof(SSL)); 278 if (s == NULL) 279 goto err; 280 281 282 s->options = ctx->options; 283 s->mode = ctx->mode; 284 s->max_cert_list = ctx->max_cert_list; 285 286 if (ctx->cert != NULL) { 287 /* 288 * Earlier library versions used to copy the pointer to 289 * the CERT, not its contents; only when setting new 290 * parameters for the per-SSL copy, ssl_cert_new would be 291 * called (and the direct reference to the per-SSL_CTX 292 * settings would be lost, but those still were indirectly 293 * accessed for various purposes, and for that reason they 294 * used to be known as s->ctx->default_cert). 295 * Now we don't look at the SSL_CTX's CERT after having 296 * duplicated it once. 297 */ 298 s->cert = ssl_cert_dup(ctx->cert); 299 if (s->cert == NULL) 300 goto err; 301 } else 302 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 303 304 s->read_ahead = ctx->read_ahead; 305 s->msg_callback = ctx->msg_callback; 306 s->msg_callback_arg = ctx->msg_callback_arg; 307 s->verify_mode = ctx->verify_mode; 308 s->sid_ctx_length = ctx->sid_ctx_length; 309 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 310 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 311 s->verify_callback = ctx->default_verify_callback; 312 s->generate_session_id = ctx->generate_session_id; 313 314 s->param = X509_VERIFY_PARAM_new(); 315 if (!s->param) 316 goto err; 317 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 318 s->quiet_shutdown = ctx->quiet_shutdown; 319 s->max_send_fragment = ctx->max_send_fragment; 320 321 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 322 s->ctx = ctx; 323 s->tlsext_debug_cb = 0; 324 s->tlsext_debug_arg = NULL; 325 s->tlsext_ticket_expected = 0; 326 s->tlsext_status_type = -1; 327 s->tlsext_status_expected = 0; 328 s->tlsext_ocsp_ids = NULL; 329 s->tlsext_ocsp_exts = NULL; 330 s->tlsext_ocsp_resp = NULL; 331 s->tlsext_ocsp_resplen = -1; 332 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 333 s->initial_ctx = ctx; 334 s->next_proto_negotiated = NULL; 335 336 if (s->ctx->alpn_client_proto_list != NULL) { 337 s->alpn_client_proto_list = 338 malloc(s->ctx->alpn_client_proto_list_len); 339 if (s->alpn_client_proto_list == NULL) 340 goto err; 341 memcpy(s->alpn_client_proto_list, 342 s->ctx->alpn_client_proto_list, 343 s->ctx->alpn_client_proto_list_len); 344 s->alpn_client_proto_list_len = 345 s->ctx->alpn_client_proto_list_len; 346 } 347 348 s->verify_result = X509_V_OK; 349 350 s->method = ctx->method; 351 352 if (!s->method->ssl_new(s)) 353 goto err; 354 355 s->references = 1; 356 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 357 358 SSL_clear(s); 359 360 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 361 362 return (s); 363 364err: 365 SSL_free(s); 366 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 367 return (NULL); 368} 369 370int 371SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 372 unsigned int sid_ctx_len) 373{ 374 if (sid_ctx_len > sizeof ctx->sid_ctx) { 375 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 376 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 377 return (0); 378 } 379 ctx->sid_ctx_length = sid_ctx_len; 380 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 381 382 return (1); 383} 384 385int 386SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 387 unsigned int sid_ctx_len) 388{ 389 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 390 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 391 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 392 return (0); 393 } 394 ssl->sid_ctx_length = sid_ctx_len; 395 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 396 397 return (1); 398} 399 400int 401SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 402{ 403 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 404 ctx->generate_session_id = cb; 405 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 406 return (1); 407} 408 409int 410SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 411{ 412 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 413 ssl->generate_session_id = cb; 414 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 415 return (1); 416} 417 418int 419SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 420 unsigned int id_len) 421{ 422 /* 423 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 424 * shows how we can "construct" a session to give us the desired 425 * check - ie. to find if there's a session in the hash table 426 * that would conflict with any new session built out of this 427 * id/id_len and the ssl_version in use by this SSL. 428 */ 429 SSL_SESSION r, *p; 430 431 if (id_len > sizeof r.session_id) 432 return (0); 433 434 r.ssl_version = ssl->version; 435 r.session_id_length = id_len; 436 memcpy(r.session_id, id, id_len); 437 438 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 439 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 440 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 441 return (p != NULL); 442} 443 444int 445SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 446{ 447 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 448} 449 450int 451SSL_set_purpose(SSL *s, int purpose) 452{ 453 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 454} 455 456int 457SSL_CTX_set_trust(SSL_CTX *s, int trust) 458{ 459 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 460} 461 462int 463SSL_set_trust(SSL *s, int trust) 464{ 465 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 466} 467 468int 469SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 470{ 471 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 472} 473 474int 475SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 476{ 477 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 478} 479 480void 481SSL_free(SSL *s) 482{ 483 int i; 484 485 if (s == NULL) 486 return; 487 488 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 489 if (i > 0) 490 return; 491 492 if (s->param) 493 X509_VERIFY_PARAM_free(s->param); 494 495 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 496 497 if (s->bbio != NULL) { 498 /* If the buffering BIO is in place, pop it off */ 499 if (s->bbio == s->wbio) { 500 s->wbio = BIO_pop(s->wbio); 501 } 502 BIO_free(s->bbio); 503 s->bbio = NULL; 504 } 505 506 if (s->rbio != s->wbio) 507 BIO_free_all(s->rbio); 508 BIO_free_all(s->wbio); 509 510 if (s->init_buf != NULL) 511 BUF_MEM_free(s->init_buf); 512 513 /* add extra stuff */ 514 if (s->cipher_list != NULL) 515 sk_SSL_CIPHER_free(s->cipher_list); 516 if (s->cipher_list_by_id != NULL) 517 sk_SSL_CIPHER_free(s->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->write_hash); 528 529 if (s->cert != NULL) 530 ssl_cert_free(s->cert); 531 /* Free up if allocated */ 532 533 free(s->tlsext_hostname); 534 SSL_CTX_free(s->initial_ctx); 535 free(s->tlsext_ecpointformatlist); 536 free(s->tlsext_ellipticcurvelist); 537 if (s->tlsext_ocsp_exts) 538 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 539 X509_EXTENSION_free); 540 if (s->tlsext_ocsp_ids) 541 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 542 free(s->tlsext_ocsp_resp); 543 544 if (s->client_CA != NULL) 545 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 546 547 if (s->method != NULL) 548 s->method->ssl_free(s); 549 550 SSL_CTX_free(s->ctx); 551 552 553 free(s->next_proto_negotiated); 554 free(s->alpn_client_proto_list); 555 556#ifndef OPENSSL_NO_SRTP 557 if (s->srtp_profiles) 558 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 559#endif 560 561 free(s); 562} 563 564void 565SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 566{ 567 /* If the output buffering BIO is still in place, remove it */ 568 if (s->bbio != NULL) { 569 if (s->wbio == s->bbio) { 570 s->wbio = s->wbio->next_bio; 571 s->bbio->next_bio = NULL; 572 } 573 } 574 575 if (s->rbio != rbio && s->rbio != s->wbio) 576 BIO_free_all(s->rbio); 577 if (s->wbio != wbio) 578 BIO_free_all(s->wbio); 579 s->rbio = rbio; 580 s->wbio = wbio; 581} 582 583BIO * 584SSL_get_rbio(const SSL *s) 585{ 586 return (s->rbio); 587} 588 589BIO * 590SSL_get_wbio(const SSL *s) 591{ 592 return (s->wbio); 593} 594 595int 596SSL_get_fd(const SSL *s) 597{ 598 return (SSL_get_rfd(s)); 599} 600 601int 602SSL_get_rfd(const SSL *s) 603{ 604 int ret = -1; 605 BIO *b, *r; 606 607 b = SSL_get_rbio(s); 608 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 609 if (r != NULL) 610 BIO_get_fd(r, &ret); 611 return (ret); 612} 613 614int 615SSL_get_wfd(const SSL *s) 616{ 617 int ret = -1; 618 BIO *b, *r; 619 620 b = SSL_get_wbio(s); 621 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 622 if (r != NULL) 623 BIO_get_fd(r, &ret); 624 return (ret); 625} 626 627int 628SSL_set_fd(SSL *s, int fd) 629{ 630 int ret = 0; 631 BIO *bio = NULL; 632 633 bio = BIO_new(BIO_s_socket()); 634 635 if (bio == NULL) { 636 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 637 goto err; 638 } 639 BIO_set_fd(bio, fd, BIO_NOCLOSE); 640 SSL_set_bio(s, bio, bio); 641 ret = 1; 642err: 643 return (ret); 644} 645 646int 647SSL_set_wfd(SSL *s, int fd) 648{ 649 int ret = 0; 650 BIO *bio = NULL; 651 652 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 653 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 654 bio = BIO_new(BIO_s_socket()); 655 656 if (bio == NULL) { 657 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 658 goto err; 659 } 660 BIO_set_fd(bio, fd, BIO_NOCLOSE); 661 SSL_set_bio(s, SSL_get_rbio(s), bio); 662 } else 663 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 664 ret = 1; 665err: 666 return (ret); 667} 668 669int 670SSL_set_rfd(SSL *s, int fd) 671{ 672 int ret = 0; 673 BIO *bio = NULL; 674 675 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 676 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 677 bio = BIO_new(BIO_s_socket()); 678 679 if (bio == NULL) { 680 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 681 goto err; 682 } 683 BIO_set_fd(bio, fd, BIO_NOCLOSE); 684 SSL_set_bio(s, bio, SSL_get_wbio(s)); 685 } else 686 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 687 ret = 1; 688err: 689 return (ret); 690} 691 692 693/* return length of latest Finished message we sent, copy to 'buf' */ 694size_t 695SSL_get_finished(const SSL *s, void *buf, size_t count) 696{ 697 size_t ret = 0; 698 699 if (s->s3 != NULL) { 700 ret = s->s3->tmp.finish_md_len; 701 if (count > ret) 702 count = ret; 703 memcpy(buf, s->s3->tmp.finish_md, count); 704 } 705 return (ret); 706} 707 708/* return length of latest Finished message we expected, copy to 'buf' */ 709size_t 710SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 711{ 712 size_t ret = 0; 713 714 if (s->s3 != NULL) { 715 ret = s->s3->tmp.peer_finish_md_len; 716 if (count > ret) 717 count = ret; 718 memcpy(buf, s->s3->tmp.peer_finish_md, count); 719 } 720 return (ret); 721} 722 723 724int 725SSL_get_verify_mode(const SSL *s) 726{ 727 return (s->verify_mode); 728} 729 730int 731SSL_get_verify_depth(const SSL *s) 732{ 733 return (X509_VERIFY_PARAM_get_depth(s->param)); 734} 735 736int 737(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 738{ 739 return (s->verify_callback); 740} 741 742int 743SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 744{ 745 return (ctx->verify_mode); 746} 747 748int 749SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 750{ 751 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 752} 753 754int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 755{ 756 return (ctx->default_verify_callback); 757} 758 759void 760SSL_set_verify(SSL *s, int mode, 761 int (*callback)(int ok, X509_STORE_CTX *ctx)) 762{ 763 s->verify_mode = mode; 764 if (callback != NULL) 765 s->verify_callback = callback; 766} 767 768void 769SSL_set_verify_depth(SSL *s, int depth) 770{ 771 X509_VERIFY_PARAM_set_depth(s->param, depth); 772} 773 774void 775SSL_set_read_ahead(SSL *s, int yes) 776{ 777 s->read_ahead = yes; 778} 779 780int 781SSL_get_read_ahead(const SSL *s) 782{ 783 return (s->read_ahead); 784} 785 786int 787SSL_pending(const SSL *s) 788{ 789 /* 790 * SSL_pending cannot work properly if read-ahead is enabled 791 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 792 * and it is impossible to fix since SSL_pending cannot report 793 * errors that may be observed while scanning the new data. 794 * (Note that SSL_pending() is often used as a boolean value, 795 * so we'd better not return -1.) 796 */ 797 return (s->method->ssl_pending(s)); 798} 799 800X509 * 801SSL_get_peer_certificate(const SSL *s) 802{ 803 X509 *r; 804 805 if ((s == NULL) || (s->session == NULL)) 806 r = NULL; 807 else 808 r = s->session->peer; 809 810 if (r == NULL) 811 return (r); 812 813 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 814 815 return (r); 816} 817 818STACK_OF(X509) * 819SSL_get_peer_cert_chain(const SSL *s) 820{ 821 STACK_OF(X509) *r; 822 823 if ((s == NULL) || (s->session == NULL) || 824 (s->session->sess_cert == NULL)) 825 r = NULL; 826 else 827 r = s->session->sess_cert->cert_chain; 828 829 /* 830 * If we are a client, cert_chain includes the peer's own 831 * certificate; 832 * if we are a server, it does not. 833 */ 834 return (r); 835} 836 837/* 838 * Now in theory, since the calling process own 't' it should be safe to 839 * modify. We need to be able to read f without being hassled 840 */ 841void 842SSL_copy_session_id(SSL *t, const SSL *f) 843{ 844 CERT *tmp; 845 846 /* Do we need to to SSL locking? */ 847 SSL_set_session(t, SSL_get_session(f)); 848 849 /* 850 * What if we are setup as SSLv2 but want to talk SSLv3 or 851 * vice-versa. 852 */ 853 if (t->method != f->method) { 854 t->method->ssl_free(t); /* cleanup current */ 855 t->method=f->method; /* change method */ 856 t->method->ssl_new(t); /* setup new */ 857 } 858 859 tmp = t->cert; 860 if (f->cert != NULL) { 861 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 862 t->cert = f->cert; 863 } else 864 t->cert = NULL; 865 if (tmp != NULL) 866 ssl_cert_free(tmp); 867 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 868} 869 870/* Fix this so it checks all the valid key/cert options */ 871int 872SSL_CTX_check_private_key(const SSL_CTX *ctx) 873{ 874 if ((ctx == NULL) || (ctx->cert == NULL) || 875 (ctx->cert->key->x509 == NULL)) { 876 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 877 SSL_R_NO_CERTIFICATE_ASSIGNED); 878 return (0); 879 } 880 if (ctx->cert->key->privatekey == NULL) { 881 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 882 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 883 return (0); 884 } 885 return (X509_check_private_key(ctx->cert->key->x509, 886 ctx->cert->key->privatekey)); 887} 888 889/* Fix this function so that it takes an optional type parameter */ 890int 891SSL_check_private_key(const SSL *ssl) 892{ 893 if (ssl == NULL) { 894 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 895 ERR_R_PASSED_NULL_PARAMETER); 896 return (0); 897 } 898 if (ssl->cert == NULL) { 899 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 900 SSL_R_NO_CERTIFICATE_ASSIGNED); 901 return (0); 902 } 903 if (ssl->cert->key->x509 == NULL) { 904 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 905 SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ssl->cert->key->privatekey == NULL) { 909 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 910 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 911 return (0); 912 } 913 return (X509_check_private_key(ssl->cert->key->x509, 914 ssl->cert->key->privatekey)); 915} 916 917int 918SSL_accept(SSL *s) 919{ 920 if (s->handshake_func == NULL) 921 SSL_set_accept_state(s); /* Not properly initialized yet */ 922 923 return (s->method->ssl_accept(s)); 924} 925 926int 927SSL_connect(SSL *s) 928{ 929 if (s->handshake_func == NULL) 930 SSL_set_connect_state(s); /* Not properly initialized yet */ 931 932 return (s->method->ssl_connect(s)); 933} 934 935long 936SSL_get_default_timeout(const SSL *s) 937{ 938 return (s->method->get_timeout()); 939} 940 941int 942SSL_read(SSL *s, void *buf, int num) 943{ 944 if (s->handshake_func == NULL) { 945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 946 return (-1); 947 } 948 949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 950 s->rwstate = SSL_NOTHING; 951 return (0); 952 } 953 return (s->method->ssl_read(s, buf, num)); 954} 955 956int 957SSL_peek(SSL *s, void *buf, int num) 958{ 959 if (s->handshake_func == NULL) { 960 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 961 return (-1); 962 } 963 964 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 965 return (0); 966 } 967 return (s->method->ssl_peek(s, buf, num)); 968} 969 970int 971SSL_write(SSL *s, const void *buf, int num) 972{ 973 if (s->handshake_func == NULL) { 974 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->shutdown & SSL_SENT_SHUTDOWN) { 979 s->rwstate = SSL_NOTHING; 980 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 981 return (-1); 982 } 983 return (s->method->ssl_write(s, buf, num)); 984} 985 986int 987SSL_shutdown(SSL *s) 988{ 989 /* 990 * Note that this function behaves differently from what one might 991 * expect. Return values are 0 for no success (yet), 992 * 1 for success; but calling it once is usually not enough, 993 * even if blocking I/O is used (see ssl3_shutdown). 994 */ 995 996 if (s->handshake_func == NULL) { 997 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 998 return (-1); 999 } 1000 1001 if ((s != NULL) && !SSL_in_init(s)) 1002 return (s->method->ssl_shutdown(s)); 1003 else 1004 return (1); 1005} 1006 1007int 1008SSL_renegotiate(SSL *s) 1009{ 1010 if (s->renegotiate == 0) 1011 s->renegotiate = 1; 1012 1013 s->new_session = 1; 1014 1015 return (s->method->ssl_renegotiate(s)); 1016} 1017 1018int 1019SSL_renegotiate_abbreviated(SSL *s) 1020{ 1021 if (s->renegotiate == 0) 1022 s->renegotiate = 1; 1023 1024 s->new_session = 0; 1025 1026 return (s->method->ssl_renegotiate(s)); 1027} 1028 1029int 1030SSL_renegotiate_pending(SSL *s) 1031{ 1032 /* 1033 * Becomes true when negotiation is requested; 1034 * false again once a handshake has finished. 1035 */ 1036 return (s->renegotiate != 0); 1037} 1038 1039long 1040SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1041{ 1042 long l; 1043 1044 switch (cmd) { 1045 case SSL_CTRL_GET_READ_AHEAD: 1046 return (s->read_ahead); 1047 case SSL_CTRL_SET_READ_AHEAD: 1048 l = s->read_ahead; 1049 s->read_ahead = larg; 1050 return (l); 1051 1052 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1053 s->msg_callback_arg = parg; 1054 return (1); 1055 1056 case SSL_CTRL_OPTIONS: 1057 return (s->options|=larg); 1058 case SSL_CTRL_CLEAR_OPTIONS: 1059 return (s->options&=~larg); 1060 case SSL_CTRL_MODE: 1061 return (s->mode|=larg); 1062 case SSL_CTRL_CLEAR_MODE: 1063 return (s->mode &=~larg); 1064 case SSL_CTRL_GET_MAX_CERT_LIST: 1065 return (s->max_cert_list); 1066 case SSL_CTRL_SET_MAX_CERT_LIST: 1067 l = s->max_cert_list; 1068 s->max_cert_list = larg; 1069 return (l); 1070 case SSL_CTRL_SET_MTU: 1071#ifndef OPENSSL_NO_DTLS1 1072 if (larg < (long)dtls1_min_mtu()) 1073 return (0); 1074#endif 1075 if (SSL_IS_DTLS(s)) { 1076 s->d1->mtu = larg; 1077 return (larg); 1078 } 1079 return (0); 1080 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1081 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1082 return (0); 1083 s->max_send_fragment = larg; 1084 return (1); 1085 case SSL_CTRL_GET_RI_SUPPORT: 1086 if (s->s3) 1087 return (s->s3->send_connection_binding); 1088 else return (0); 1089 default: 1090 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1091 } 1092} 1093 1094long 1095SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1096{ 1097 switch (cmd) { 1098 case SSL_CTRL_SET_MSG_CALLBACK: 1099 s->msg_callback = (void (*)(int write_p, int version, 1100 int content_type, const void *buf, size_t len, 1101 SSL *ssl, void *arg))(fp); 1102 return (1); 1103 1104 default: 1105 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1106 } 1107} 1108 1109LHASH_OF(SSL_SESSION) * 1110SSL_CTX_sessions(SSL_CTX *ctx) 1111{ 1112 return (ctx->sessions); 1113} 1114 1115long 1116SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1117{ 1118 long l; 1119 1120 switch (cmd) { 1121 case SSL_CTRL_GET_READ_AHEAD: 1122 return (ctx->read_ahead); 1123 case SSL_CTRL_SET_READ_AHEAD: 1124 l = ctx->read_ahead; 1125 ctx->read_ahead = larg; 1126 return (l); 1127 1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1129 ctx->msg_callback_arg = parg; 1130 return (1); 1131 1132 case SSL_CTRL_GET_MAX_CERT_LIST: 1133 return (ctx->max_cert_list); 1134 case SSL_CTRL_SET_MAX_CERT_LIST: 1135 l = ctx->max_cert_list; 1136 ctx->max_cert_list = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1140 l = ctx->session_cache_size; 1141 ctx->session_cache_size = larg; 1142 return (l); 1143 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1144 return (ctx->session_cache_size); 1145 case SSL_CTRL_SET_SESS_CACHE_MODE: 1146 l = ctx->session_cache_mode; 1147 ctx->session_cache_mode = larg; 1148 return (l); 1149 case SSL_CTRL_GET_SESS_CACHE_MODE: 1150 return (ctx->session_cache_mode); 1151 1152 case SSL_CTRL_SESS_NUMBER: 1153 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1154 case SSL_CTRL_SESS_CONNECT: 1155 return (ctx->stats.sess_connect); 1156 case SSL_CTRL_SESS_CONNECT_GOOD: 1157 return (ctx->stats.sess_connect_good); 1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1159 return (ctx->stats.sess_connect_renegotiate); 1160 case SSL_CTRL_SESS_ACCEPT: 1161 return (ctx->stats.sess_accept); 1162 case SSL_CTRL_SESS_ACCEPT_GOOD: 1163 return (ctx->stats.sess_accept_good); 1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1165 return (ctx->stats.sess_accept_renegotiate); 1166 case SSL_CTRL_SESS_HIT: 1167 return (ctx->stats.sess_hit); 1168 case SSL_CTRL_SESS_CB_HIT: 1169 return (ctx->stats.sess_cb_hit); 1170 case SSL_CTRL_SESS_MISSES: 1171 return (ctx->stats.sess_miss); 1172 case SSL_CTRL_SESS_TIMEOUTS: 1173 return (ctx->stats.sess_timeout); 1174 case SSL_CTRL_SESS_CACHE_FULL: 1175 return (ctx->stats.sess_cache_full); 1176 case SSL_CTRL_OPTIONS: 1177 return (ctx->options|=larg); 1178 case SSL_CTRL_CLEAR_OPTIONS: 1179 return (ctx->options&=~larg); 1180 case SSL_CTRL_MODE: 1181 return (ctx->mode|=larg); 1182 case SSL_CTRL_CLEAR_MODE: 1183 return (ctx->mode&=~larg); 1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1186 return (0); 1187 ctx->max_send_fragment = larg; 1188 return (1); 1189 default: 1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1191 } 1192} 1193 1194long 1195SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1196{ 1197 switch (cmd) { 1198 case SSL_CTRL_SET_MSG_CALLBACK: 1199 ctx->msg_callback = (void (*)(int write_p, int version, 1200 int content_type, const void *buf, size_t len, SSL *ssl, 1201 void *arg))(fp); 1202 return (1); 1203 1204 default: 1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1206 } 1207} 1208 1209int 1210ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1211{ 1212 long l; 1213 1214 l = a->id - b->id; 1215 if (l == 0L) 1216 return (0); 1217 else 1218 return ((l > 0) ? 1:-1); 1219} 1220 1221int 1222ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1223 const SSL_CIPHER * const *bp) 1224{ 1225 long l; 1226 1227 l = (*ap)->id - (*bp)->id; 1228 if (l == 0L) 1229 return (0); 1230 else 1231 return ((l > 0) ? 1:-1); 1232} 1233 1234/* 1235 * Return a STACK of the ciphers available for the SSL and in order of 1236 * preference. 1237 */ 1238STACK_OF(SSL_CIPHER) * 1239SSL_get_ciphers(const SSL *s) 1240{ 1241 if (s != NULL) { 1242 if (s->cipher_list != NULL) { 1243 return (s->cipher_list); 1244 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1245 return (s->ctx->cipher_list); 1246 } 1247 } 1248 return (NULL); 1249} 1250 1251/* 1252 * Return a STACK of the ciphers available for the SSL and in order of 1253 * algorithm id. 1254 */ 1255STACK_OF(SSL_CIPHER) * 1256ssl_get_ciphers_by_id(SSL *s) 1257{ 1258 if (s != NULL) { 1259 if (s->cipher_list_by_id != NULL) { 1260 return (s->cipher_list_by_id); 1261 } else if ((s->ctx != NULL) && 1262 (s->ctx->cipher_list_by_id != NULL)) { 1263 return (s->ctx->cipher_list_by_id); 1264 } 1265 } 1266 return (NULL); 1267} 1268 1269/* The old interface to get the same thing as SSL_get_ciphers(). */ 1270const char * 1271SSL_get_cipher_list(const SSL *s, int n) 1272{ 1273 SSL_CIPHER *c; 1274 STACK_OF(SSL_CIPHER) *sk; 1275 1276 if (s == NULL) 1277 return (NULL); 1278 sk = SSL_get_ciphers(s); 1279 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1280 return (NULL); 1281 c = sk_SSL_CIPHER_value(sk, n); 1282 if (c == NULL) 1283 return (NULL); 1284 return (c->name); 1285} 1286 1287/* Specify the ciphers to be used by default by the SSL_CTX. */ 1288int 1289SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1290{ 1291 STACK_OF(SSL_CIPHER) *sk; 1292 1293 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1294 &ctx->cipher_list_by_id, str); 1295 /* 1296 * ssl_create_cipher_list may return an empty stack if it 1297 * was unable to find a cipher matching the given rule string 1298 * (for example if the rule string specifies a cipher which 1299 * has been disabled). This is not an error as far as 1300 * ssl_create_cipher_list is concerned, and hence 1301 * ctx->cipher_list and ctx->cipher_list_by_id has been 1302 * updated. 1303 */ 1304 if (sk == NULL) 1305 return (0); 1306 else if (sk_SSL_CIPHER_num(sk) == 0) { 1307 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1308 return (0); 1309 } 1310 return (1); 1311} 1312 1313/* Specify the ciphers to be used by the SSL. */ 1314int 1315SSL_set_cipher_list(SSL *s, const char *str) 1316{ 1317 STACK_OF(SSL_CIPHER) *sk; 1318 1319 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1320 &s->cipher_list_by_id, str); 1321 /* see comment in SSL_CTX_set_cipher_list */ 1322 if (sk == NULL) 1323 return (0); 1324 else if (sk_SSL_CIPHER_num(sk) == 0) { 1325 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1326 return (0); 1327 } 1328 return (1); 1329} 1330 1331/* works well for SSLv2, not so good for SSLv3 */ 1332char * 1333SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1334{ 1335 char *end; 1336 STACK_OF(SSL_CIPHER) *sk; 1337 SSL_CIPHER *c; 1338 size_t curlen = 0; 1339 int i; 1340 1341 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1342 return (NULL); 1343 1344 sk = s->session->ciphers; 1345 if (sk_SSL_CIPHER_num(sk) == 0) 1346 return (NULL); 1347 1348 buf[0] = '\0'; 1349 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1350 c = sk_SSL_CIPHER_value(sk, i); 1351 end = buf + curlen; 1352 if (strlcat(buf, c->name, len) >= len || 1353 (curlen = strlcat(buf, ":", len)) >= len) { 1354 /* remove truncated cipher from list */ 1355 *end = '\0'; 1356 break; 1357 } 1358 } 1359 /* remove trailing colon */ 1360 if ((end = strrchr(buf, ':')) != NULL) 1361 *end = '\0'; 1362 return (buf); 1363} 1364 1365int 1366ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1367{ 1368 int i; 1369 SSL_CIPHER *c; 1370 unsigned char *q; 1371 1372 if (sk == NULL) 1373 return (0); 1374 q = p; 1375 1376 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1377 c = sk_SSL_CIPHER_value(sk, i); 1378 1379 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1380 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1381 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1382 continue; 1383 1384 s2n(ssl3_cipher_get_value(c), p); 1385 } 1386 1387 /* 1388 * If p == q, no ciphers and caller indicates an error. Otherwise 1389 * add SCSV if not renegotiating. 1390 */ 1391 if (p != q && !s->renegotiate) 1392 s2n(SSL3_CK_SCSV & SSL3_CK_VALUE_MASK, p); 1393 1394 return (p - q); 1395} 1396 1397STACK_OF(SSL_CIPHER) * 1398ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1399{ 1400 CBS cbs; 1401 const SSL_CIPHER *c; 1402 STACK_OF(SSL_CIPHER) *sk = NULL; 1403 unsigned long cipher_id; 1404 uint16_t cipher_value, max_version; 1405 1406 if (s->s3) 1407 s->s3->send_connection_binding = 0; 1408 1409 /* 1410 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1411 */ 1412 if (num < 2 || num > 0x10000 - 2) { 1413 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1414 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1415 return (NULL); 1416 } 1417 1418 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1419 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1420 goto err; 1421 } 1422 1423 CBS_init(&cbs, p, num); 1424 while (CBS_len(&cbs) > 0) { 1425 if (!CBS_get_u16(&cbs, &cipher_value)) { 1426 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1427 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1428 goto err; 1429 } 1430 1431 cipher_id = SSL3_CK_ID | cipher_value; 1432 1433 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1434 /* 1435 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1436 * renegotiating. 1437 */ 1438 if (s->renegotiate) { 1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1440 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1441 ssl3_send_alert(s, SSL3_AL_FATAL, 1442 SSL_AD_HANDSHAKE_FAILURE); 1443 1444 goto err; 1445 } 1446 s->s3->send_connection_binding = 1; 1447 continue; 1448 } 1449 1450 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1451 /* 1452 * TLS_FALLBACK_SCSV indicates that the client 1453 * previously tried a higher protocol version. 1454 * Fail if the current version is an unexpected 1455 * downgrade. 1456 */ 1457 max_version = ssl_max_server_version(s); 1458 if (max_version == 0 || s->version < max_version) { 1459 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1460 SSL_R_INAPPROPRIATE_FALLBACK); 1461 if (s->s3 != NULL) 1462 ssl3_send_alert(s, SSL3_AL_FATAL, 1463 SSL_AD_INAPPROPRIATE_FALLBACK); 1464 goto err; 1465 } 1466 continue; 1467 } 1468 1469 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1470 if (!sk_SSL_CIPHER_push(sk, c)) { 1471 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1472 ERR_R_MALLOC_FAILURE); 1473 goto err; 1474 } 1475 } 1476 } 1477 1478 return (sk); 1479 1480err: 1481 sk_SSL_CIPHER_free(sk); 1482 1483 return (NULL); 1484} 1485 1486 1487/* 1488 * Return a servername extension value if provided in Client Hello, or NULL. 1489 * So far, only host_name types are defined (RFC 3546). 1490 */ 1491const char * 1492SSL_get_servername(const SSL *s, const int type) 1493{ 1494 if (type != TLSEXT_NAMETYPE_host_name) 1495 return (NULL); 1496 1497 return (s->session && !s->tlsext_hostname ? 1498 s->session->tlsext_hostname : 1499 s->tlsext_hostname); 1500} 1501 1502int 1503SSL_get_servername_type(const SSL *s) 1504{ 1505 if (s->session && 1506 (!s->tlsext_hostname ? 1507 s->session->tlsext_hostname : s->tlsext_hostname)) 1508 return (TLSEXT_NAMETYPE_host_name); 1509 return (-1); 1510} 1511 1512/* 1513 * SSL_select_next_proto implements the standard protocol selection. It is 1514 * expected that this function is called from the callback set by 1515 * SSL_CTX_set_next_proto_select_cb. 1516 * 1517 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1518 * strings. The length byte itself is not included in the length. A byte 1519 * string of length 0 is invalid. No byte string may be truncated. 1520 * 1521 * The current, but experimental algorithm for selecting the protocol is: 1522 * 1523 * 1) If the server doesn't support NPN then this is indicated to the 1524 * callback. In this case, the client application has to abort the connection 1525 * or have a default application level protocol. 1526 * 1527 * 2) If the server supports NPN, but advertises an empty list then the 1528 * client selects the first protcol in its list, but indicates via the 1529 * API that this fallback case was enacted. 1530 * 1531 * 3) Otherwise, the client finds the first protocol in the server's list 1532 * that it supports and selects this protocol. This is because it's 1533 * assumed that the server has better information about which protocol 1534 * a client should use. 1535 * 1536 * 4) If the client doesn't support any of the server's advertised 1537 * protocols, then this is treated the same as case 2. 1538 * 1539 * It returns either 1540 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1541 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1542 */ 1543int 1544SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1545 const unsigned char *server, unsigned int server_len, 1546 const unsigned char *client, unsigned int client_len) 1547{ 1548 unsigned int i, j; 1549 const unsigned char *result; 1550 int status = OPENSSL_NPN_UNSUPPORTED; 1551 1552 /* 1553 * For each protocol in server preference order, 1554 * see if we support it. 1555 */ 1556 for (i = 0; i < server_len; ) { 1557 for (j = 0; j < client_len; ) { 1558 if (server[i] == client[j] && 1559 memcmp(&server[i + 1], 1560 &client[j + 1], server[i]) == 0) { 1561 /* We found a match */ 1562 result = &server[i]; 1563 status = OPENSSL_NPN_NEGOTIATED; 1564 goto found; 1565 } 1566 j += client[j]; 1567 j++; 1568 } 1569 i += server[i]; 1570 i++; 1571 } 1572 1573 /* There's no overlap between our protocols and the server's list. */ 1574 result = client; 1575 status = OPENSSL_NPN_NO_OVERLAP; 1576 1577found: 1578 *out = (unsigned char *) result + 1; 1579 *outlen = result[0]; 1580 return (status); 1581} 1582 1583/* 1584 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1585 * requested protocol for this connection and returns 0. If the client didn't 1586 * request any protocol, then *data is set to NULL. 1587 * 1588 * Note that the client can request any protocol it chooses. The value returned 1589 * from this function need not be a member of the list of supported protocols 1590 * provided by the callback. 1591 */ 1592void 1593SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1594 unsigned *len) 1595{ 1596 *data = s->next_proto_negotiated; 1597 if (!*data) { 1598 *len = 0; 1599 } else { 1600 *len = s->next_proto_negotiated_len; 1601 } 1602} 1603 1604/* 1605 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1606 * TLS server needs a list of supported protocols for Next Protocol 1607 * Negotiation. The returned list must be in wire format. The list is returned 1608 * by setting |out| to point to it and |outlen| to its length. This memory will 1609 * not be modified, but one should assume that the SSL* keeps a reference to 1610 * it. 1611 * 1612 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1613 * Otherwise, no such extension will be included in the ServerHello. 1614 */ 1615void 1616SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1617 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1618{ 1619 ctx->next_protos_advertised_cb = cb; 1620 ctx->next_protos_advertised_cb_arg = arg; 1621} 1622 1623/* 1624 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1625 * client needs to select a protocol from the server's provided list. |out| 1626 * must be set to point to the selected protocol (which may be within |in|). 1627 * The length of the protocol name must be written into |outlen|. The server's 1628 * advertised protocols are provided in |in| and |inlen|. The callback can 1629 * assume that |in| is syntactically valid. 1630 * 1631 * The client must select a protocol. It is fatal to the connection if this 1632 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1633 */ 1634void 1635SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1636 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1637 unsigned int inlen, void *arg), void *arg) 1638{ 1639 ctx->next_proto_select_cb = cb; 1640 ctx->next_proto_select_cb_arg = arg; 1641} 1642 1643/* 1644 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1645 * protocols, which must be in wire-format (i.e. a series of non-empty, 1646 * 8-bit length-prefixed strings). Returns 0 on success. 1647 */ 1648int 1649SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1650 unsigned int protos_len) 1651{ 1652 free(ctx->alpn_client_proto_list); 1653 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1654 return (1); 1655 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1656 ctx->alpn_client_proto_list_len = protos_len; 1657 1658 return (0); 1659} 1660 1661/* 1662 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1663 * protocols, which must be in wire-format (i.e. a series of non-empty, 1664 * 8-bit length-prefixed strings). Returns 0 on success. 1665 */ 1666int 1667SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1668 unsigned int protos_len) 1669{ 1670 free(ssl->alpn_client_proto_list); 1671 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1672 return (1); 1673 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1674 ssl->alpn_client_proto_list_len = protos_len; 1675 1676 return (0); 1677} 1678 1679/* 1680 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1681 * ClientHello processing in order to select an ALPN protocol from the 1682 * client's list of offered protocols. 1683 */ 1684void 1685SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1686 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1687 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1688{ 1689 ctx->alpn_select_cb = cb; 1690 ctx->alpn_select_cb_arg = arg; 1691} 1692 1693/* 1694 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1695 * it sets data to point to len bytes of protocol name (not including the 1696 * leading length-prefix byte). If the server didn't respond with* a negotiated 1697 * protocol then len will be zero. 1698 */ 1699void 1700SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1701 unsigned *len) 1702{ 1703 *data = NULL; 1704 *len = 0; 1705 1706 if (ssl->s3 != NULL) { 1707 *data = ssl->s3->alpn_selected; 1708 *len = ssl->s3->alpn_selected_len; 1709 } 1710} 1711 1712int 1713SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1714 const char *label, size_t llen, const unsigned char *p, size_t plen, 1715 int use_context) 1716{ 1717 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1718 label, llen, p, plen, use_context)); 1719} 1720 1721static unsigned long 1722ssl_session_hash(const SSL_SESSION *a) 1723{ 1724 unsigned long l; 1725 1726 l = (unsigned long) 1727 ((unsigned int) a->session_id[0] )| 1728 ((unsigned int) a->session_id[1]<< 8L)| 1729 ((unsigned long)a->session_id[2]<<16L)| 1730 ((unsigned long)a->session_id[3]<<24L); 1731 return (l); 1732} 1733 1734/* 1735 * NB: If this function (or indeed the hash function which uses a sort of 1736 * coarser function than this one) is changed, ensure 1737 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1738 * able to construct an SSL_SESSION that will collide with any existing session 1739 * with a matching session ID. 1740 */ 1741static int 1742ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1743{ 1744 if (a->ssl_version != b->ssl_version) 1745 return (1); 1746 if (a->session_id_length != b->session_id_length) 1747 return (1); 1748 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1749 return (1); 1750 return (0); 1751} 1752 1753/* 1754 * These wrapper functions should remain rather than redeclaring 1755 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1756 * variable. The reason is that the functions aren't static, they're exposed via 1757 * ssl.h. 1758 */ 1759static unsigned long 1760ssl_session_LHASH_HASH(const void *arg) 1761{ 1762 const SSL_SESSION *a = arg; 1763 1764 return ssl_session_hash(a); 1765} 1766 1767static int 1768ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1769{ 1770 const SSL_SESSION *a = arg1; 1771 const SSL_SESSION *b = arg2; 1772 1773 return ssl_session_cmp(a, b); 1774} 1775 1776SSL_CTX * 1777SSL_CTX_new(const SSL_METHOD *meth) 1778{ 1779 SSL_CTX *ret = NULL; 1780 1781 if (meth == NULL) { 1782 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1783 return (NULL); 1784 } 1785 1786 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1787 SSLerr(SSL_F_SSL_CTX_NEW, 1788 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1789 goto err; 1790 } 1791 ret = calloc(1, sizeof(SSL_CTX)); 1792 if (ret == NULL) 1793 goto err; 1794 1795 ret->method = meth; 1796 1797 ret->cert_store = NULL; 1798 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1799 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1800 ret->session_cache_head = NULL; 1801 ret->session_cache_tail = NULL; 1802 1803 /* We take the system default */ 1804 ret->session_timeout = meth->get_timeout(); 1805 1806 ret->new_session_cb = 0; 1807 ret->remove_session_cb = 0; 1808 ret->get_session_cb = 0; 1809 ret->generate_session_id = 0; 1810 1811 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1812 1813 ret->references = 1; 1814 ret->quiet_shutdown = 0; 1815 1816 ret->info_callback = NULL; 1817 1818 ret->app_verify_callback = 0; 1819 ret->app_verify_arg = NULL; 1820 1821 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1822 ret->read_ahead = 0; 1823 ret->msg_callback = 0; 1824 ret->msg_callback_arg = NULL; 1825 ret->verify_mode = SSL_VERIFY_NONE; 1826 ret->sid_ctx_length = 0; 1827 ret->default_verify_callback = NULL; 1828 if ((ret->cert = ssl_cert_new()) == NULL) 1829 goto err; 1830 1831 ret->default_passwd_callback = 0; 1832 ret->default_passwd_callback_userdata = NULL; 1833 ret->client_cert_cb = 0; 1834 ret->app_gen_cookie_cb = 0; 1835 ret->app_verify_cookie_cb = 0; 1836 1837 ret->sessions = lh_SSL_SESSION_new(); 1838 if (ret->sessions == NULL) 1839 goto err; 1840 ret->cert_store = X509_STORE_new(); 1841 if (ret->cert_store == NULL) 1842 goto err; 1843 1844 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1845 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1846 if (ret->cipher_list == NULL || 1847 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1848 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1849 goto err2; 1850 } 1851 1852 ret->param = X509_VERIFY_PARAM_new(); 1853 if (!ret->param) 1854 goto err; 1855 1856 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1857 SSLerr(SSL_F_SSL_CTX_NEW, 1858 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1859 goto err2; 1860 } 1861 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1862 SSLerr(SSL_F_SSL_CTX_NEW, 1863 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1864 goto err2; 1865 } 1866 1867 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1868 goto err; 1869 1870 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1871 1872 ret->extra_certs = NULL; 1873 1874 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1875 1876 ret->tlsext_servername_callback = 0; 1877 ret->tlsext_servername_arg = NULL; 1878 1879 /* Setup RFC4507 ticket keys */ 1880 arc4random_buf(ret->tlsext_tick_key_name, 16); 1881 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1882 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1883 1884 ret->tlsext_status_cb = 0; 1885 ret->tlsext_status_arg = NULL; 1886 1887 ret->next_protos_advertised_cb = 0; 1888 ret->next_proto_select_cb = 0; 1889#ifndef OPENSSL_NO_ENGINE 1890 ret->client_cert_engine = NULL; 1891#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1892#define eng_strx(x) #x 1893#define eng_str(x) eng_strx(x) 1894 /* Use specific client engine automatically... ignore errors */ 1895 { 1896 ENGINE *eng; 1897 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1898 if (!eng) { 1899 ERR_clear_error(); 1900 ENGINE_load_builtin_engines(); 1901 eng = ENGINE_by_id(eng_str( 1902 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1903 } 1904 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1905 ERR_clear_error(); 1906 } 1907#endif 1908#endif 1909 /* 1910 * Default is to connect to non-RI servers. When RI is more widely 1911 * deployed might change this. 1912 */ 1913 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1914 1915 return (ret); 1916err: 1917 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1918err2: 1919 SSL_CTX_free(ret); 1920 return (NULL); 1921} 1922 1923void 1924SSL_CTX_free(SSL_CTX *a) 1925{ 1926 int i; 1927 1928 if (a == NULL) 1929 return; 1930 1931 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1932 if (i > 0) 1933 return; 1934 1935 if (a->param) 1936 X509_VERIFY_PARAM_free(a->param); 1937 1938 /* 1939 * Free internal session cache. However: the remove_cb() may reference 1940 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1941 * after the sessions were flushed. 1942 * As the ex_data handling routines might also touch the session cache, 1943 * the most secure solution seems to be: empty (flush) the cache, then 1944 * free ex_data, then finally free the cache. 1945 * (See ticket [openssl.org #212].) 1946 */ 1947 if (a->sessions != NULL) 1948 SSL_CTX_flush_sessions(a, 0); 1949 1950 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1951 1952 if (a->sessions != NULL) 1953 lh_SSL_SESSION_free(a->sessions); 1954 1955 if (a->cert_store != NULL) 1956 X509_STORE_free(a->cert_store); 1957 if (a->cipher_list != NULL) 1958 sk_SSL_CIPHER_free(a->cipher_list); 1959 if (a->cipher_list_by_id != NULL) 1960 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1961 if (a->cert != NULL) 1962 ssl_cert_free(a->cert); 1963 if (a->client_CA != NULL) 1964 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1965 if (a->extra_certs != NULL) 1966 sk_X509_pop_free(a->extra_certs, X509_free); 1967 1968#ifndef OPENSSL_NO_SRTP 1969 if (a->srtp_profiles) 1970 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1971#endif 1972 1973#ifndef OPENSSL_NO_ENGINE 1974 if (a->client_cert_engine) 1975 ENGINE_finish(a->client_cert_engine); 1976#endif 1977 1978 free(a->alpn_client_proto_list); 1979 1980 free(a); 1981} 1982 1983void 1984SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1985{ 1986 ctx->default_passwd_callback = cb; 1987} 1988 1989void 1990SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1991{ 1992 ctx->default_passwd_callback_userdata = u; 1993} 1994 1995void 1996SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1997 void *), void *arg) 1998{ 1999 ctx->app_verify_callback = cb; 2000 ctx->app_verify_arg = arg; 2001} 2002 2003void 2004SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2005{ 2006 ctx->verify_mode = mode; 2007 ctx->default_verify_callback = cb; 2008} 2009 2010void 2011SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2012{ 2013 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2014} 2015 2016void 2017ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2018{ 2019 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2020 int have_ecc_cert, have_ecdh_tmp; 2021 unsigned long mask_k, mask_a; 2022 X509 *x = NULL; 2023 CERT_PKEY *cpk; 2024 2025 if (c == NULL) 2026 return; 2027 2028 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2029 c->dh_tmp_auto != 0); 2030 2031 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2032 c->ecdh_tmp_auto != 0); 2033 2034 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2035 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2036 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2037 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2038 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2039 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2040/* FIX THIS EAY EAY EAY */ 2041 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2042 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2043 mask_k = 0; 2044 mask_a = 0; 2045 2046 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2047 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2048 mask_k |= SSL_kGOST; 2049 mask_a |= SSL_aGOST01; 2050 } 2051 2052 if (rsa_enc) 2053 mask_k|=SSL_kRSA; 2054 2055 if (dh_tmp) 2056 mask_k|=SSL_kDHE; 2057 2058 if (rsa_enc || rsa_sign) 2059 mask_a|=SSL_aRSA; 2060 2061 if (dsa_sign) 2062 mask_a|=SSL_aDSS; 2063 2064 mask_a|=SSL_aNULL; 2065 2066 /* 2067 * An ECC certificate may be usable for ECDH and/or 2068 * ECDSA cipher suites depending on the key usage extension. 2069 */ 2070 if (have_ecc_cert) { 2071 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2072 2073 /* This call populates extension flags (ex_flags). */ 2074 X509_check_purpose(x, -1, 0); 2075 2076 /* Key usage, if present, must allow signing. */ 2077 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2078 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2079 mask_a|=SSL_aECDSA; 2080 } 2081 2082 if (have_ecdh_tmp) 2083 mask_k|=SSL_kECDHE; 2084 2085 c->mask_k = mask_k; 2086 c->mask_a = mask_a; 2087 c->valid = 1; 2088} 2089 2090int 2091ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2092{ 2093 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2094 unsigned long alg_a; 2095 2096 alg_a = cs->algorithm_auth; 2097 2098 if (alg_a & SSL_aECDSA) { 2099 /* This call populates extension flags (ex_flags). */ 2100 X509_check_purpose(x, -1, 0); 2101 2102 /* Key usage, if present, must allow signing. */ 2103 if ((x->ex_flags & EXFLAG_KUSAGE) && 2104 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2105 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2106 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2107 return (0); 2108 } 2109 } 2110 2111 return (1); 2112} 2113 2114CERT_PKEY * 2115ssl_get_server_send_pkey(const SSL *s) 2116{ 2117 unsigned long alg_a; 2118 CERT *c; 2119 int i; 2120 2121 c = s->cert; 2122 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2123 2124 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2125 2126 if (alg_a & SSL_aECDSA) { 2127 i = SSL_PKEY_ECC; 2128 } else if (alg_a & SSL_aDSS) { 2129 i = SSL_PKEY_DSA_SIGN; 2130 } else if (alg_a & SSL_aRSA) { 2131 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2132 i = SSL_PKEY_RSA_SIGN; 2133 else 2134 i = SSL_PKEY_RSA_ENC; 2135 } else if (alg_a & SSL_aGOST01) { 2136 i = SSL_PKEY_GOST01; 2137 } else { /* if (alg_a & SSL_aNULL) */ 2138 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2139 return (NULL); 2140 } 2141 2142 return (c->pkeys + i); 2143} 2144 2145X509 * 2146ssl_get_server_send_cert(const SSL *s) 2147{ 2148 CERT_PKEY *cpk; 2149 2150 cpk = ssl_get_server_send_pkey(s); 2151 if (!cpk) 2152 return (NULL); 2153 return (cpk->x509); 2154} 2155 2156EVP_PKEY * 2157ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2158{ 2159 unsigned long alg_a; 2160 CERT *c; 2161 int idx = -1; 2162 2163 alg_a = cipher->algorithm_auth; 2164 c = s->cert; 2165 2166 if ((alg_a & SSL_aDSS) && 2167 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2168 idx = SSL_PKEY_DSA_SIGN; 2169 else if (alg_a & SSL_aRSA) { 2170 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2171 idx = SSL_PKEY_RSA_SIGN; 2172 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2173 idx = SSL_PKEY_RSA_ENC; 2174 } else if ((alg_a & SSL_aECDSA) && 2175 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2176 idx = SSL_PKEY_ECC; 2177 if (idx == -1) { 2178 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2179 return (NULL); 2180 } 2181 if (pmd) 2182 *pmd = c->pkeys[idx].digest; 2183 return (c->pkeys[idx].privatekey); 2184} 2185 2186DH * 2187ssl_get_auto_dh(SSL *s) 2188{ 2189 CERT_PKEY *cpk; 2190 int keylen; 2191 DH *dhp; 2192 2193 if (s->cert->dh_tmp_auto == 2) { 2194 keylen = 1024; 2195 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2196 keylen = 1024; 2197 if (s->s3->tmp.new_cipher->strength_bits == 256) 2198 keylen = 3072; 2199 } else { 2200 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2201 return (NULL); 2202 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2203 return (NULL); 2204 keylen = EVP_PKEY_bits(cpk->privatekey); 2205 } 2206 2207 if ((dhp = DH_new()) == NULL) 2208 return (NULL); 2209 2210 dhp->g = BN_new(); 2211 if (dhp->g != NULL) 2212 BN_set_word(dhp->g, 2); 2213 2214 if (keylen >= 8192) 2215 dhp->p = get_rfc3526_prime_8192(NULL); 2216 else if (keylen >= 4096) 2217 dhp->p = get_rfc3526_prime_4096(NULL); 2218 else if (keylen >= 3072) 2219 dhp->p = get_rfc3526_prime_3072(NULL); 2220 else if (keylen >= 2048) 2221 dhp->p = get_rfc3526_prime_2048(NULL); 2222 else if (keylen >= 1536) 2223 dhp->p = get_rfc3526_prime_1536(NULL); 2224 else 2225 dhp->p = get_rfc2409_prime_1024(NULL); 2226 2227 if (dhp->p == NULL || dhp->g == NULL) { 2228 DH_free(dhp); 2229 return (NULL); 2230 } 2231 return (dhp); 2232} 2233 2234void 2235ssl_update_cache(SSL *s, int mode) 2236{ 2237 int i; 2238 2239 /* 2240 * If the session_id_length is 0, we are not supposed to cache it, 2241 * and it would be rather hard to do anyway :-) 2242 */ 2243 if (s->session->session_id_length == 0) 2244 return; 2245 2246 i = s->session_ctx->session_cache_mode; 2247 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2248 || SSL_CTX_add_session(s->session_ctx, s->session)) 2249 && (s->session_ctx->new_session_cb != NULL)) { 2250 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2251 if (!s->session_ctx->new_session_cb(s, s->session)) 2252 SSL_SESSION_free(s->session); 2253 } 2254 2255 /* auto flush every 255 connections */ 2256 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2257 ((i & mode) == mode)) { 2258 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2259 s->session_ctx->stats.sess_connect_good : 2260 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2261 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2262 } 2263 } 2264} 2265 2266const SSL_METHOD * 2267SSL_get_ssl_method(SSL *s) 2268{ 2269 return (s->method); 2270} 2271 2272int 2273SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2274{ 2275 int conn = -1; 2276 int ret = 1; 2277 2278 if (s->method != meth) { 2279 if (s->handshake_func != NULL) 2280 conn = (s->handshake_func == s->method->ssl_connect); 2281 2282 if (s->method->version == meth->version) 2283 s->method = meth; 2284 else { 2285 s->method->ssl_free(s); 2286 s->method = meth; 2287 ret = s->method->ssl_new(s); 2288 } 2289 2290 if (conn == 1) 2291 s->handshake_func = meth->ssl_connect; 2292 else if (conn == 0) 2293 s->handshake_func = meth->ssl_accept; 2294 } 2295 return (ret); 2296} 2297 2298int 2299SSL_get_error(const SSL *s, int i) 2300{ 2301 int reason; 2302 unsigned long l; 2303 BIO *bio; 2304 2305 if (i > 0) 2306 return (SSL_ERROR_NONE); 2307 2308 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2309 * etc, where we do encode the error */ 2310 if ((l = ERR_peek_error()) != 0) { 2311 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2312 return (SSL_ERROR_SYSCALL); 2313 else 2314 return (SSL_ERROR_SSL); 2315 } 2316 2317 if ((i < 0) && SSL_want_read(s)) { 2318 bio = SSL_get_rbio(s); 2319 if (BIO_should_read(bio)) { 2320 return (SSL_ERROR_WANT_READ); 2321 } else if (BIO_should_write(bio)) { 2322 /* 2323 * This one doesn't make too much sense... We never 2324 * try to write to the rbio, and an application 2325 * program where rbio and wbio are separate couldn't 2326 * even know what it should wait for. However if we 2327 * ever set s->rwstate incorrectly (so that we have 2328 * SSL_want_read(s) instead of SSL_want_write(s)) 2329 * and rbio and wbio *are* the same, this test works 2330 * around that bug; so it might be safer to keep it. 2331 */ 2332 return (SSL_ERROR_WANT_WRITE); 2333 } else if (BIO_should_io_special(bio)) { 2334 reason = BIO_get_retry_reason(bio); 2335 if (reason == BIO_RR_CONNECT) 2336 return (SSL_ERROR_WANT_CONNECT); 2337 else if (reason == BIO_RR_ACCEPT) 2338 return (SSL_ERROR_WANT_ACCEPT); 2339 else 2340 return (SSL_ERROR_SYSCALL); /* unknown */ 2341 } 2342 } 2343 2344 if ((i < 0) && SSL_want_write(s)) { 2345 bio = SSL_get_wbio(s); 2346 if (BIO_should_write(bio)) { 2347 return (SSL_ERROR_WANT_WRITE); 2348 } else if (BIO_should_read(bio)) { 2349 /* 2350 * See above (SSL_want_read(s) with 2351 * BIO_should_write(bio)) 2352 */ 2353 return (SSL_ERROR_WANT_READ); 2354 } else if (BIO_should_io_special(bio)) { 2355 reason = BIO_get_retry_reason(bio); 2356 if (reason == BIO_RR_CONNECT) 2357 return (SSL_ERROR_WANT_CONNECT); 2358 else if (reason == BIO_RR_ACCEPT) 2359 return (SSL_ERROR_WANT_ACCEPT); 2360 else 2361 return (SSL_ERROR_SYSCALL); 2362 } 2363 } 2364 if ((i < 0) && SSL_want_x509_lookup(s)) { 2365 return (SSL_ERROR_WANT_X509_LOOKUP); 2366 } 2367 2368 if (i == 0) { 2369 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2370 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2371 return (SSL_ERROR_ZERO_RETURN); 2372 } 2373 return (SSL_ERROR_SYSCALL); 2374} 2375 2376int 2377SSL_do_handshake(SSL *s) 2378{ 2379 int ret = 1; 2380 2381 if (s->handshake_func == NULL) { 2382 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2383 return (-1); 2384 } 2385 2386 s->method->ssl_renegotiate_check(s); 2387 2388 if (SSL_in_init(s) || SSL_in_before(s)) { 2389 ret = s->handshake_func(s); 2390 } 2391 return (ret); 2392} 2393 2394/* 2395 * For the next 2 functions, SSL_clear() sets shutdown and so 2396 * one of these calls will reset it 2397 */ 2398void 2399SSL_set_accept_state(SSL *s) 2400{ 2401 s->server = 1; 2402 s->shutdown = 0; 2403 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2404 s->handshake_func = s->method->ssl_accept; 2405 /* clear the current cipher */ 2406 ssl_clear_cipher_ctx(s); 2407 ssl_clear_hash_ctx(&s->read_hash); 2408 ssl_clear_hash_ctx(&s->write_hash); 2409} 2410 2411void 2412SSL_set_connect_state(SSL *s) 2413{ 2414 s->server = 0; 2415 s->shutdown = 0; 2416 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2417 s->handshake_func = s->method->ssl_connect; 2418 /* clear the current cipher */ 2419 ssl_clear_cipher_ctx(s); 2420 ssl_clear_hash_ctx(&s->read_hash); 2421 ssl_clear_hash_ctx(&s->write_hash); 2422} 2423 2424int 2425ssl_undefined_function(SSL *s) 2426{ 2427 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2428 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2429 return (0); 2430} 2431 2432int 2433ssl_undefined_void_function(void) 2434{ 2435 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2436 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2437 return (0); 2438} 2439 2440int 2441ssl_undefined_const_function(const SSL *s) 2442{ 2443 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2444 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2445 return (0); 2446} 2447 2448const char * 2449ssl_version_string(int ver) 2450{ 2451 switch (ver) { 2452 case DTLS1_VERSION: 2453 return (SSL_TXT_DTLS1); 2454 case TLS1_VERSION: 2455 return (SSL_TXT_TLSV1); 2456 case TLS1_1_VERSION: 2457 return (SSL_TXT_TLSV1_1); 2458 case TLS1_2_VERSION: 2459 return (SSL_TXT_TLSV1_2); 2460 default: 2461 return ("unknown"); 2462 } 2463} 2464 2465const char * 2466SSL_get_version(const SSL *s) 2467{ 2468 return ssl_version_string(s->version); 2469} 2470 2471uint16_t 2472ssl_max_server_version(SSL *s) 2473{ 2474 uint16_t max_version; 2475 2476 /* 2477 * The SSL method will be changed during version negotiation, as such 2478 * we want to use the SSL method from the context. 2479 */ 2480 max_version = s->ctx->method->version; 2481 2482 if (SSL_IS_DTLS(s)) 2483 return (DTLS1_VERSION); 2484 2485 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2486 max_version >= TLS1_2_VERSION) 2487 return (TLS1_2_VERSION); 2488 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2489 max_version >= TLS1_1_VERSION) 2490 return (TLS1_1_VERSION); 2491 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2492 max_version >= TLS1_VERSION) 2493 return (TLS1_VERSION); 2494 2495 return (0); 2496} 2497 2498SSL * 2499SSL_dup(SSL *s) 2500{ 2501 STACK_OF(X509_NAME) *sk; 2502 X509_NAME *xn; 2503 SSL *ret; 2504 int i; 2505 2506 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2507 return (NULL); 2508 2509 ret->version = s->version; 2510 ret->type = s->type; 2511 ret->method = s->method; 2512 2513 if (s->session != NULL) { 2514 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2515 SSL_copy_session_id(ret, s); 2516 } else { 2517 /* 2518 * No session has been established yet, so we have to expect 2519 * that s->cert or ret->cert will be changed later -- 2520 * they should not both point to the same object, 2521 * and thus we can't use SSL_copy_session_id. 2522 */ 2523 2524 ret->method->ssl_free(ret); 2525 ret->method = s->method; 2526 ret->method->ssl_new(ret); 2527 2528 if (s->cert != NULL) { 2529 if (ret->cert != NULL) { 2530 ssl_cert_free(ret->cert); 2531 } 2532 ret->cert = ssl_cert_dup(s->cert); 2533 if (ret->cert == NULL) 2534 goto err; 2535 } 2536 2537 SSL_set_session_id_context(ret, 2538 s->sid_ctx, s->sid_ctx_length); 2539 } 2540 2541 ret->options = s->options; 2542 ret->mode = s->mode; 2543 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2544 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2545 ret->msg_callback = s->msg_callback; 2546 ret->msg_callback_arg = s->msg_callback_arg; 2547 SSL_set_verify(ret, SSL_get_verify_mode(s), 2548 SSL_get_verify_callback(s)); 2549 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2550 ret->generate_session_id = s->generate_session_id; 2551 2552 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2553 2554 ret->debug = s->debug; 2555 2556 /* copy app data, a little dangerous perhaps */ 2557 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2558 &ret->ex_data, &s->ex_data)) 2559 goto err; 2560 2561 /* setup rbio, and wbio */ 2562 if (s->rbio != NULL) { 2563 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2564 goto err; 2565 } 2566 if (s->wbio != NULL) { 2567 if (s->wbio != s->rbio) { 2568 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2569 goto err; 2570 } else 2571 ret->wbio = ret->rbio; 2572 } 2573 ret->rwstate = s->rwstate; 2574 ret->in_handshake = s->in_handshake; 2575 ret->handshake_func = s->handshake_func; 2576 ret->server = s->server; 2577 ret->renegotiate = s->renegotiate; 2578 ret->new_session = s->new_session; 2579 ret->quiet_shutdown = s->quiet_shutdown; 2580 ret->shutdown = s->shutdown; 2581 /* SSL_dup does not really work at any state, though */ 2582 ret->state=s->state; 2583 ret->rstate = s->rstate; 2584 2585 /* 2586 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2587 * ret->init_off 2588 */ 2589 ret->init_num = 0; 2590 2591 ret->hit = s->hit; 2592 2593 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2594 2595 /* dup the cipher_list and cipher_list_by_id stacks */ 2596 if (s->cipher_list != NULL) { 2597 if ((ret->cipher_list = 2598 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2599 goto err; 2600 } 2601 if (s->cipher_list_by_id != NULL) { 2602 if ((ret->cipher_list_by_id = 2603 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2604 goto err; 2605 } 2606 2607 /* Dup the client_CA list */ 2608 if (s->client_CA != NULL) { 2609 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2610 ret->client_CA = sk; 2611 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2612 xn = sk_X509_NAME_value(sk, i); 2613 if (sk_X509_NAME_set(sk, i, 2614 X509_NAME_dup(xn)) == NULL) { 2615 X509_NAME_free(xn); 2616 goto err; 2617 } 2618 } 2619 } 2620 2621 if (0) { 2622err: 2623 if (ret != NULL) 2624 SSL_free(ret); 2625 ret = NULL; 2626 } 2627 return (ret); 2628} 2629 2630void 2631ssl_clear_cipher_ctx(SSL *s) 2632{ 2633 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2634 s->enc_read_ctx = NULL; 2635 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2636 s->enc_write_ctx = NULL; 2637 2638 if (s->aead_read_ctx != NULL) { 2639 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2640 free(s->aead_read_ctx); 2641 s->aead_read_ctx = NULL; 2642 } 2643 if (s->aead_write_ctx != NULL) { 2644 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2645 free(s->aead_write_ctx); 2646 s->aead_write_ctx = NULL; 2647 } 2648 2649} 2650 2651/* Fix this function so that it takes an optional type parameter */ 2652X509 * 2653SSL_get_certificate(const SSL *s) 2654{ 2655 if (s->cert != NULL) 2656 return (s->cert->key->x509); 2657 else 2658 return (NULL); 2659} 2660 2661/* Fix this function so that it takes an optional type parameter */ 2662EVP_PKEY * 2663SSL_get_privatekey(SSL *s) 2664{ 2665 if (s->cert != NULL) 2666 return (s->cert->key->privatekey); 2667 else 2668 return (NULL); 2669} 2670 2671const SSL_CIPHER * 2672SSL_get_current_cipher(const SSL *s) 2673{ 2674 if ((s->session != NULL) && (s->session->cipher != NULL)) 2675 return (s->session->cipher); 2676 return (NULL); 2677} 2678const void * 2679SSL_get_current_compression(SSL *s) 2680{ 2681 return (NULL); 2682} 2683 2684const void * 2685SSL_get_current_expansion(SSL *s) 2686{ 2687 return (NULL); 2688} 2689 2690int 2691ssl_init_wbio_buffer(SSL *s, int push) 2692{ 2693 BIO *bbio; 2694 2695 if (s->bbio == NULL) { 2696 bbio = BIO_new(BIO_f_buffer()); 2697 if (bbio == NULL) 2698 return (0); 2699 s->bbio = bbio; 2700 } else { 2701 bbio = s->bbio; 2702 if (s->bbio == s->wbio) 2703 s->wbio = BIO_pop(s->wbio); 2704 } 2705 (void)BIO_reset(bbio); 2706/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2707 if (!BIO_set_read_buffer_size(bbio, 1)) { 2708 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2709 return (0); 2710 } 2711 if (push) { 2712 if (s->wbio != bbio) 2713 s->wbio = BIO_push(bbio, s->wbio); 2714 } else { 2715 if (s->wbio == bbio) 2716 s->wbio = BIO_pop(bbio); 2717 } 2718 return (1); 2719} 2720 2721void 2722ssl_free_wbio_buffer(SSL *s) 2723{ 2724 if (s == NULL) 2725 return; 2726 2727 if (s->bbio == NULL) 2728 return; 2729 2730 if (s->bbio == s->wbio) { 2731 /* remove buffering */ 2732 s->wbio = BIO_pop(s->wbio); 2733 } 2734 BIO_free(s->bbio); 2735 s->bbio = NULL; 2736} 2737 2738void 2739SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2740{ 2741 ctx->quiet_shutdown = mode; 2742} 2743 2744int 2745SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2746{ 2747 return (ctx->quiet_shutdown); 2748} 2749 2750void 2751SSL_set_quiet_shutdown(SSL *s, int mode) 2752{ 2753 s->quiet_shutdown = mode; 2754} 2755 2756int 2757SSL_get_quiet_shutdown(const SSL *s) 2758{ 2759 return (s->quiet_shutdown); 2760} 2761 2762void 2763SSL_set_shutdown(SSL *s, int mode) 2764{ 2765 s->shutdown = mode; 2766} 2767 2768int 2769SSL_get_shutdown(const SSL *s) 2770{ 2771 return (s->shutdown); 2772} 2773 2774int 2775SSL_version(const SSL *s) 2776{ 2777 return (s->version); 2778} 2779 2780SSL_CTX * 2781SSL_get_SSL_CTX(const SSL *ssl) 2782{ 2783 return (ssl->ctx); 2784} 2785 2786SSL_CTX * 2787SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2788{ 2789 CERT *ocert = ssl->cert; 2790 2791 if (ssl->ctx == ctx) 2792 return (ssl->ctx); 2793 if (ctx == NULL) 2794 ctx = ssl->initial_ctx; 2795 ssl->cert = ssl_cert_dup(ctx->cert); 2796 if (ocert != NULL) { 2797 int i; 2798 /* Copy negotiated digests from original certificate. */ 2799 for (i = 0; i < SSL_PKEY_NUM; i++) 2800 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2801 ssl_cert_free(ocert); 2802 } 2803 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2804 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2805 ssl->ctx = ctx; 2806 return (ssl->ctx); 2807} 2808 2809int 2810SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2811{ 2812 return (X509_STORE_set_default_paths(ctx->cert_store)); 2813} 2814 2815int 2816SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2817 const char *CApath) 2818{ 2819 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2820} 2821 2822int 2823SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2824{ 2825 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2826} 2827 2828void 2829SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2830{ 2831 ssl->info_callback = cb; 2832} 2833 2834void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2835{ 2836 return (ssl->info_callback); 2837} 2838 2839int 2840SSL_state(const SSL *ssl) 2841{ 2842 return (ssl->state); 2843} 2844 2845void 2846SSL_set_state(SSL *ssl, int state) 2847{ 2848 ssl->state = state; 2849} 2850 2851void 2852SSL_set_verify_result(SSL *ssl, long arg) 2853{ 2854 ssl->verify_result = arg; 2855} 2856 2857long 2858SSL_get_verify_result(const SSL *ssl) 2859{ 2860 return (ssl->verify_result); 2861} 2862 2863int 2864SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2865 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2866{ 2867 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2868 new_func, dup_func, free_func)); 2869} 2870 2871int 2872SSL_set_ex_data(SSL *s, int idx, void *arg) 2873{ 2874 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2875} 2876 2877void * 2878SSL_get_ex_data(const SSL *s, int idx) 2879{ 2880 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2881} 2882 2883int 2884SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2885 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2886{ 2887 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2888 new_func, dup_func, free_func)); 2889} 2890 2891int 2892SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2893{ 2894 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2895} 2896 2897void * 2898SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2899{ 2900 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2901} 2902 2903int 2904ssl_ok(SSL *s) 2905{ 2906 return (1); 2907} 2908 2909X509_STORE * 2910SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2911{ 2912 return (ctx->cert_store); 2913} 2914 2915void 2916SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2917{ 2918 if (ctx->cert_store != NULL) 2919 X509_STORE_free(ctx->cert_store); 2920 ctx->cert_store = store; 2921} 2922 2923int 2924SSL_want(const SSL *s) 2925{ 2926 return (s->rwstate); 2927} 2928 2929void 2930SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2931 int keylength)) 2932{ 2933 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2934} 2935 2936void 2937SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2938 int keylength)) 2939{ 2940 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2941} 2942 2943void 2944SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2945 int keylength)) 2946{ 2947 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2948} 2949 2950void 2951SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2952 int keylength)) 2953{ 2954 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2955} 2956 2957void 2958SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2959 int is_export, int keylength)) 2960{ 2961 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2962 (void (*)(void))ecdh); 2963} 2964 2965void 2966SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2967 int keylength)) 2968{ 2969 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2970} 2971 2972 2973void 2974SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2975 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2976{ 2977 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2978 (void (*)(void))cb); 2979} 2980 2981void 2982SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2983 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2984{ 2985 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2986} 2987 2988void 2989ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2990{ 2991 if (*hash) 2992 EVP_MD_CTX_destroy(*hash); 2993 *hash = NULL; 2994} 2995 2996void 2997SSL_set_debug(SSL *s, int debug) 2998{ 2999 s->debug = debug; 3000} 3001 3002int 3003SSL_cache_hit(SSL *s) 3004{ 3005 return (s->hit); 3006} 3007 3008IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3009