ssl_lib.c revision 1.127
1/* $OpenBSD: ssl_lib.c,v 1.127 2017/01/22 06:36:49 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 if ((s = calloc(1, sizeof(*s))) == NULL) { 278 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 279 return (NULL); 280 } 281 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 282 free(s); 283 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 284 return (NULL); 285 } 286 287 s->options = ctx->options; 288 s->mode = ctx->mode; 289 s->max_cert_list = ctx->max_cert_list; 290 291 if (ctx->cert != NULL) { 292 /* 293 * Earlier library versions used to copy the pointer to 294 * the CERT, not its contents; only when setting new 295 * parameters for the per-SSL copy, ssl_cert_new would be 296 * called (and the direct reference to the per-SSL_CTX 297 * settings would be lost, but those still were indirectly 298 * accessed for various purposes, and for that reason they 299 * used to be known as s->ctx->default_cert). 300 * Now we don't look at the SSL_CTX's CERT after having 301 * duplicated it once. 302 */ 303 s->cert = ssl_cert_dup(ctx->cert); 304 if (s->cert == NULL) 305 goto err; 306 } else 307 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 308 309 s->read_ahead = ctx->read_ahead; 310 s->msg_callback = ctx->msg_callback; 311 s->msg_callback_arg = ctx->msg_callback_arg; 312 s->verify_mode = ctx->verify_mode; 313 s->sid_ctx_length = ctx->sid_ctx_length; 314 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 315 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 316 s->verify_callback = ctx->default_verify_callback; 317 s->generate_session_id = ctx->generate_session_id; 318 319 s->param = X509_VERIFY_PARAM_new(); 320 if (!s->param) 321 goto err; 322 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 323 s->quiet_shutdown = ctx->quiet_shutdown; 324 s->max_send_fragment = ctx->max_send_fragment; 325 326 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 327 s->ctx = ctx; 328 s->tlsext_debug_cb = 0; 329 s->tlsext_debug_arg = NULL; 330 s->tlsext_ticket_expected = 0; 331 s->tlsext_status_type = -1; 332 s->tlsext_status_expected = 0; 333 s->tlsext_ocsp_ids = NULL; 334 s->tlsext_ocsp_exts = NULL; 335 s->tlsext_ocsp_resp = NULL; 336 s->tlsext_ocsp_resplen = -1; 337 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 338 s->initial_ctx = ctx; 339 s->internal->next_proto_negotiated = NULL; 340 341 if (s->ctx->internal->alpn_client_proto_list != NULL) { 342 s->internal->alpn_client_proto_list = 343 malloc(s->ctx->internal->alpn_client_proto_list_len); 344 if (s->internal->alpn_client_proto_list == NULL) 345 goto err; 346 memcpy(s->internal->alpn_client_proto_list, 347 s->ctx->internal->alpn_client_proto_list, 348 s->ctx->internal->alpn_client_proto_list_len); 349 s->internal->alpn_client_proto_list_len = 350 s->ctx->internal->alpn_client_proto_list_len; 351 } 352 353 s->verify_result = X509_V_OK; 354 355 s->method = ctx->method; 356 357 if (!s->method->ssl_new(s)) 358 goto err; 359 360 s->references = 1; 361 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 362 363 SSL_clear(s); 364 365 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 366 367 return (s); 368 369 err: 370 SSL_free(s); 371 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 372 return (NULL); 373} 374 375int 376SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 377 unsigned int sid_ctx_len) 378{ 379 if (sid_ctx_len > sizeof ctx->sid_ctx) { 380 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 381 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 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 396 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 397 return (0); 398 } 399 ssl->sid_ctx_length = sid_ctx_len; 400 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 401 402 return (1); 403} 404 405int 406SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 407{ 408 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 409 ctx->generate_session_id = cb; 410 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 411 return (1); 412} 413 414int 415SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 416{ 417 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 418 ssl->generate_session_id = cb; 419 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 420 return (1); 421} 422 423int 424SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 425 unsigned int id_len) 426{ 427 /* 428 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 429 * shows how we can "construct" a session to give us the desired 430 * check - ie. to find if there's a session in the hash table 431 * that would conflict with any new session built out of this 432 * id/id_len and the ssl_version in use by this SSL. 433 */ 434 SSL_SESSION r, *p; 435 436 if (id_len > sizeof r.session_id) 437 return (0); 438 439 r.ssl_version = ssl->version; 440 r.session_id_length = id_len; 441 memcpy(r.session_id, id, id_len); 442 443 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 444 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 445 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 446 return (p != NULL); 447} 448 449int 450SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 451{ 452 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 453} 454 455int 456SSL_set_purpose(SSL *s, int purpose) 457{ 458 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 459} 460 461int 462SSL_CTX_set_trust(SSL_CTX *s, int trust) 463{ 464 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 465} 466 467int 468SSL_set_trust(SSL *s, int trust) 469{ 470 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 471} 472 473int 474SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 475{ 476 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 477} 478 479int 480SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 481{ 482 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 483} 484 485void 486SSL_free(SSL *s) 487{ 488 int i; 489 490 if (s == NULL) 491 return; 492 493 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 494 if (i > 0) 495 return; 496 497 if (s->param) 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 if (s->init_buf != NULL) 516 BUF_MEM_free(s->init_buf); 517 518 /* add extra stuff */ 519 if (s->cipher_list != NULL) 520 sk_SSL_CIPHER_free(s->cipher_list); 521 if (s->cipher_list_by_id != NULL) 522 sk_SSL_CIPHER_free(s->cipher_list_by_id); 523 524 /* Make the next call work :-) */ 525 if (s->session != NULL) { 526 ssl_clear_bad_session(s); 527 SSL_SESSION_free(s->session); 528 } 529 530 ssl_clear_cipher_ctx(s); 531 ssl_clear_hash_ctx(&s->read_hash); 532 ssl_clear_hash_ctx(&s->write_hash); 533 534 if (s->cert != NULL) 535 ssl_cert_free(s->cert); 536 /* Free up if allocated */ 537 538 free(s->tlsext_hostname); 539 SSL_CTX_free(s->initial_ctx); 540 free(s->tlsext_ecpointformatlist); 541 free(s->tlsext_ellipticcurvelist); 542 if (s->tlsext_ocsp_exts) 543 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 544 X509_EXTENSION_free); 545 if (s->tlsext_ocsp_ids) 546 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 547 free(s->tlsext_ocsp_resp); 548 549 if (s->client_CA != NULL) 550 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 551 552 if (s->method != NULL) 553 s->method->ssl_free(s); 554 555 SSL_CTX_free(s->ctx); 556 557 free(s->internal->next_proto_negotiated); 558 free(s->internal->alpn_client_proto_list); 559 560#ifndef OPENSSL_NO_SRTP 561 if (s->srtp_profiles) 562 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 563#endif 564 565 free(s->internal); 566 free(s); 567} 568 569void 570SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 571{ 572 /* If the output buffering BIO is still in place, remove it */ 573 if (s->bbio != NULL) { 574 if (s->wbio == s->bbio) { 575 s->wbio = s->wbio->next_bio; 576 s->bbio->next_bio = NULL; 577 } 578 } 579 580 if (s->rbio != rbio && s->rbio != s->wbio) 581 BIO_free_all(s->rbio); 582 if (s->wbio != wbio) 583 BIO_free_all(s->wbio); 584 s->rbio = rbio; 585 s->wbio = wbio; 586} 587 588BIO * 589SSL_get_rbio(const SSL *s) 590{ 591 return (s->rbio); 592} 593 594BIO * 595SSL_get_wbio(const SSL *s) 596{ 597 return (s->wbio); 598} 599 600int 601SSL_get_fd(const SSL *s) 602{ 603 return (SSL_get_rfd(s)); 604} 605 606int 607SSL_get_rfd(const SSL *s) 608{ 609 int ret = -1; 610 BIO *b, *r; 611 612 b = SSL_get_rbio(s); 613 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 614 if (r != NULL) 615 BIO_get_fd(r, &ret); 616 return (ret); 617} 618 619int 620SSL_get_wfd(const SSL *s) 621{ 622 int ret = -1; 623 BIO *b, *r; 624 625 b = SSL_get_wbio(s); 626 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 627 if (r != NULL) 628 BIO_get_fd(r, &ret); 629 return (ret); 630} 631 632int 633SSL_set_fd(SSL *s, int fd) 634{ 635 int ret = 0; 636 BIO *bio = NULL; 637 638 bio = BIO_new(BIO_s_socket()); 639 640 if (bio == NULL) { 641 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 642 goto err; 643 } 644 BIO_set_fd(bio, fd, BIO_NOCLOSE); 645 SSL_set_bio(s, bio, bio); 646 ret = 1; 647err: 648 return (ret); 649} 650 651int 652SSL_set_wfd(SSL *s, int fd) 653{ 654 int ret = 0; 655 BIO *bio = NULL; 656 657 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 658 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 659 bio = BIO_new(BIO_s_socket()); 660 661 if (bio == NULL) { 662 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 663 goto err; 664 } 665 BIO_set_fd(bio, fd, BIO_NOCLOSE); 666 SSL_set_bio(s, SSL_get_rbio(s), bio); 667 } else 668 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 669 ret = 1; 670err: 671 return (ret); 672} 673 674int 675SSL_set_rfd(SSL *s, int fd) 676{ 677 int ret = 0; 678 BIO *bio = NULL; 679 680 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 681 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 682 bio = BIO_new(BIO_s_socket()); 683 684 if (bio == NULL) { 685 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 686 goto err; 687 } 688 BIO_set_fd(bio, fd, BIO_NOCLOSE); 689 SSL_set_bio(s, bio, SSL_get_wbio(s)); 690 } else 691 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 692 ret = 1; 693err: 694 return (ret); 695} 696 697 698/* return length of latest Finished message we sent, copy to 'buf' */ 699size_t 700SSL_get_finished(const SSL *s, void *buf, size_t count) 701{ 702 size_t ret = 0; 703 704 if (s->s3 != NULL) { 705 ret = s->s3->tmp.finish_md_len; 706 if (count > ret) 707 count = ret; 708 memcpy(buf, s->s3->tmp.finish_md, count); 709 } 710 return (ret); 711} 712 713/* return length of latest Finished message we expected, copy to 'buf' */ 714size_t 715SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 716{ 717 size_t ret = 0; 718 719 if (s->s3 != NULL) { 720 ret = s->s3->tmp.peer_finish_md_len; 721 if (count > ret) 722 count = ret; 723 memcpy(buf, s->s3->tmp.peer_finish_md, count); 724 } 725 return (ret); 726} 727 728 729int 730SSL_get_verify_mode(const SSL *s) 731{ 732 return (s->verify_mode); 733} 734 735int 736SSL_get_verify_depth(const SSL *s) 737{ 738 return (X509_VERIFY_PARAM_get_depth(s->param)); 739} 740 741int 742(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 743{ 744 return (s->verify_callback); 745} 746 747int 748SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 749{ 750 return (ctx->verify_mode); 751} 752 753int 754SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 755{ 756 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 757} 758 759int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 760{ 761 return (ctx->default_verify_callback); 762} 763 764void 765SSL_set_verify(SSL *s, int mode, 766 int (*callback)(int ok, X509_STORE_CTX *ctx)) 767{ 768 s->verify_mode = mode; 769 if (callback != NULL) 770 s->verify_callback = callback; 771} 772 773void 774SSL_set_verify_depth(SSL *s, int depth) 775{ 776 X509_VERIFY_PARAM_set_depth(s->param, depth); 777} 778 779void 780SSL_set_read_ahead(SSL *s, int yes) 781{ 782 s->read_ahead = yes; 783} 784 785int 786SSL_get_read_ahead(const SSL *s) 787{ 788 return (s->read_ahead); 789} 790 791int 792SSL_pending(const SSL *s) 793{ 794 /* 795 * SSL_pending cannot work properly if read-ahead is enabled 796 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 797 * and it is impossible to fix since SSL_pending cannot report 798 * errors that may be observed while scanning the new data. 799 * (Note that SSL_pending() is often used as a boolean value, 800 * so we'd better not return -1.) 801 */ 802 return (s->method->ssl_pending(s)); 803} 804 805X509 * 806SSL_get_peer_certificate(const SSL *s) 807{ 808 X509 *r; 809 810 if ((s == NULL) || (s->session == NULL)) 811 r = NULL; 812 else 813 r = s->session->peer; 814 815 if (r == NULL) 816 return (r); 817 818 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 819 820 return (r); 821} 822 823STACK_OF(X509) * 824SSL_get_peer_cert_chain(const SSL *s) 825{ 826 STACK_OF(X509) *r; 827 828 if ((s == NULL) || (s->session == NULL) || 829 (s->session->sess_cert == NULL)) 830 r = NULL; 831 else 832 r = s->session->sess_cert->cert_chain; 833 834 /* 835 * If we are a client, cert_chain includes the peer's own 836 * certificate; 837 * if we are a server, it does not. 838 */ 839 return (r); 840} 841 842/* 843 * Now in theory, since the calling process own 't' it should be safe to 844 * modify. We need to be able to read f without being hassled 845 */ 846void 847SSL_copy_session_id(SSL *t, const SSL *f) 848{ 849 CERT *tmp; 850 851 /* Do we need to to SSL locking? */ 852 SSL_set_session(t, SSL_get_session(f)); 853 854 /* 855 * What if we are setup as SSLv2 but want to talk SSLv3 or 856 * vice-versa. 857 */ 858 if (t->method != f->method) { 859 t->method->ssl_free(t); /* cleanup current */ 860 t->method=f->method; /* change method */ 861 t->method->ssl_new(t); /* setup new */ 862 } 863 864 tmp = t->cert; 865 if (f->cert != NULL) { 866 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 867 t->cert = f->cert; 868 } else 869 t->cert = NULL; 870 if (tmp != NULL) 871 ssl_cert_free(tmp); 872 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 873} 874 875/* Fix this so it checks all the valid key/cert options */ 876int 877SSL_CTX_check_private_key(const SSL_CTX *ctx) 878{ 879 if ((ctx == NULL) || (ctx->cert == NULL) || 880 (ctx->cert->key->x509 == NULL)) { 881 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 882 SSL_R_NO_CERTIFICATE_ASSIGNED); 883 return (0); 884 } 885 if (ctx->cert->key->privatekey == NULL) { 886 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 887 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 888 return (0); 889 } 890 return (X509_check_private_key(ctx->cert->key->x509, 891 ctx->cert->key->privatekey)); 892} 893 894/* Fix this function so that it takes an optional type parameter */ 895int 896SSL_check_private_key(const SSL *ssl) 897{ 898 if (ssl == NULL) { 899 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 900 ERR_R_PASSED_NULL_PARAMETER); 901 return (0); 902 } 903 if (ssl->cert == NULL) { 904 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 905 SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ssl->cert->key->x509 == NULL) { 909 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 910 SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->privatekey == NULL) { 914 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 915 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 916 return (0); 917 } 918 return (X509_check_private_key(ssl->cert->key->x509, 919 ssl->cert->key->privatekey)); 920} 921 922int 923SSL_accept(SSL *s) 924{ 925 if (s->handshake_func == NULL) 926 SSL_set_accept_state(s); /* Not properly initialized yet */ 927 928 return (s->method->ssl_accept(s)); 929} 930 931int 932SSL_connect(SSL *s) 933{ 934 if (s->handshake_func == NULL) 935 SSL_set_connect_state(s); /* Not properly initialized yet */ 936 937 return (s->method->ssl_connect(s)); 938} 939 940long 941SSL_get_default_timeout(const SSL *s) 942{ 943 return (s->method->get_timeout()); 944} 945 946int 947SSL_read(SSL *s, void *buf, int num) 948{ 949 if (s->handshake_func == NULL) { 950 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 951 return (-1); 952 } 953 954 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 955 s->rwstate = SSL_NOTHING; 956 return (0); 957 } 958 return (s->method->ssl_read(s, buf, num)); 959} 960 961int 962SSL_peek(SSL *s, void *buf, int num) 963{ 964 if (s->handshake_func == NULL) { 965 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 966 return (-1); 967 } 968 969 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 970 return (0); 971 } 972 return (s->method->ssl_peek(s, buf, num)); 973} 974 975int 976SSL_write(SSL *s, const void *buf, int num) 977{ 978 if (s->handshake_func == NULL) { 979 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 980 return (-1); 981 } 982 983 if (s->shutdown & SSL_SENT_SHUTDOWN) { 984 s->rwstate = SSL_NOTHING; 985 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 986 return (-1); 987 } 988 return (s->method->ssl_write(s, buf, num)); 989} 990 991int 992SSL_shutdown(SSL *s) 993{ 994 /* 995 * Note that this function behaves differently from what one might 996 * expect. Return values are 0 for no success (yet), 997 * 1 for success; but calling it once is usually not enough, 998 * even if blocking I/O is used (see ssl3_shutdown). 999 */ 1000 1001 if (s->handshake_func == NULL) { 1002 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1003 return (-1); 1004 } 1005 1006 if ((s != NULL) && !SSL_in_init(s)) 1007 return (s->method->ssl_shutdown(s)); 1008 else 1009 return (1); 1010} 1011 1012int 1013SSL_renegotiate(SSL *s) 1014{ 1015 if (s->renegotiate == 0) 1016 s->renegotiate = 1; 1017 1018 s->new_session = 1; 1019 1020 return (s->method->ssl_renegotiate(s)); 1021} 1022 1023int 1024SSL_renegotiate_abbreviated(SSL *s) 1025{ 1026 if (s->renegotiate == 0) 1027 s->renegotiate = 1; 1028 1029 s->new_session = 0; 1030 1031 return (s->method->ssl_renegotiate(s)); 1032} 1033 1034int 1035SSL_renegotiate_pending(SSL *s) 1036{ 1037 /* 1038 * Becomes true when negotiation is requested; 1039 * false again once a handshake has finished. 1040 */ 1041 return (s->renegotiate != 0); 1042} 1043 1044long 1045SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1046{ 1047 long l; 1048 1049 switch (cmd) { 1050 case SSL_CTRL_GET_READ_AHEAD: 1051 return (s->read_ahead); 1052 case SSL_CTRL_SET_READ_AHEAD: 1053 l = s->read_ahead; 1054 s->read_ahead = larg; 1055 return (l); 1056 1057 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1058 s->msg_callback_arg = parg; 1059 return (1); 1060 1061 case SSL_CTRL_OPTIONS: 1062 return (s->options|=larg); 1063 case SSL_CTRL_CLEAR_OPTIONS: 1064 return (s->options&=~larg); 1065 case SSL_CTRL_MODE: 1066 return (s->mode|=larg); 1067 case SSL_CTRL_CLEAR_MODE: 1068 return (s->mode &=~larg); 1069 case SSL_CTRL_GET_MAX_CERT_LIST: 1070 return (s->max_cert_list); 1071 case SSL_CTRL_SET_MAX_CERT_LIST: 1072 l = s->max_cert_list; 1073 s->max_cert_list = larg; 1074 return (l); 1075 case SSL_CTRL_SET_MTU: 1076#ifndef OPENSSL_NO_DTLS1 1077 if (larg < (long)dtls1_min_mtu()) 1078 return (0); 1079#endif 1080 if (SSL_IS_DTLS(s)) { 1081 s->d1->mtu = larg; 1082 return (larg); 1083 } 1084 return (0); 1085 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1086 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1087 return (0); 1088 s->max_send_fragment = larg; 1089 return (1); 1090 case SSL_CTRL_GET_RI_SUPPORT: 1091 if (s->s3) 1092 return (s->s3->send_connection_binding); 1093 else return (0); 1094 default: 1095 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1096 } 1097} 1098 1099long 1100SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1101{ 1102 switch (cmd) { 1103 case SSL_CTRL_SET_MSG_CALLBACK: 1104 s->msg_callback = (void (*)(int write_p, int version, 1105 int content_type, const void *buf, size_t len, 1106 SSL *ssl, void *arg))(fp); 1107 return (1); 1108 1109 default: 1110 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1111 } 1112} 1113 1114struct lhash_st_SSL_SESSION * 1115SSL_CTX_sessions(SSL_CTX *ctx) 1116{ 1117 return (ctx->sessions); 1118} 1119 1120long 1121SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1122{ 1123 long l; 1124 1125 switch (cmd) { 1126 case SSL_CTRL_GET_READ_AHEAD: 1127 return (ctx->read_ahead); 1128 case SSL_CTRL_SET_READ_AHEAD: 1129 l = ctx->read_ahead; 1130 ctx->read_ahead = larg; 1131 return (l); 1132 1133 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1134 ctx->msg_callback_arg = parg; 1135 return (1); 1136 1137 case SSL_CTRL_GET_MAX_CERT_LIST: 1138 return (ctx->max_cert_list); 1139 case SSL_CTRL_SET_MAX_CERT_LIST: 1140 l = ctx->max_cert_list; 1141 ctx->max_cert_list = larg; 1142 return (l); 1143 1144 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1145 l = ctx->session_cache_size; 1146 ctx->session_cache_size = larg; 1147 return (l); 1148 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1149 return (ctx->session_cache_size); 1150 case SSL_CTRL_SET_SESS_CACHE_MODE: 1151 l = ctx->session_cache_mode; 1152 ctx->session_cache_mode = larg; 1153 return (l); 1154 case SSL_CTRL_GET_SESS_CACHE_MODE: 1155 return (ctx->session_cache_mode); 1156 1157 case SSL_CTRL_SESS_NUMBER: 1158 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1159 case SSL_CTRL_SESS_CONNECT: 1160 return (ctx->stats.sess_connect); 1161 case SSL_CTRL_SESS_CONNECT_GOOD: 1162 return (ctx->stats.sess_connect_good); 1163 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1164 return (ctx->stats.sess_connect_renegotiate); 1165 case SSL_CTRL_SESS_ACCEPT: 1166 return (ctx->stats.sess_accept); 1167 case SSL_CTRL_SESS_ACCEPT_GOOD: 1168 return (ctx->stats.sess_accept_good); 1169 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1170 return (ctx->stats.sess_accept_renegotiate); 1171 case SSL_CTRL_SESS_HIT: 1172 return (ctx->stats.sess_hit); 1173 case SSL_CTRL_SESS_CB_HIT: 1174 return (ctx->stats.sess_cb_hit); 1175 case SSL_CTRL_SESS_MISSES: 1176 return (ctx->stats.sess_miss); 1177 case SSL_CTRL_SESS_TIMEOUTS: 1178 return (ctx->stats.sess_timeout); 1179 case SSL_CTRL_SESS_CACHE_FULL: 1180 return (ctx->stats.sess_cache_full); 1181 case SSL_CTRL_OPTIONS: 1182 return (ctx->options|=larg); 1183 case SSL_CTRL_CLEAR_OPTIONS: 1184 return (ctx->options&=~larg); 1185 case SSL_CTRL_MODE: 1186 return (ctx->mode|=larg); 1187 case SSL_CTRL_CLEAR_MODE: 1188 return (ctx->mode&=~larg); 1189 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1190 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1191 return (0); 1192 ctx->max_send_fragment = larg; 1193 return (1); 1194 default: 1195 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1196 } 1197} 1198 1199long 1200SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1201{ 1202 switch (cmd) { 1203 case SSL_CTRL_SET_MSG_CALLBACK: 1204 ctx->msg_callback = (void (*)(int write_p, int version, 1205 int content_type, const void *buf, size_t len, SSL *ssl, 1206 void *arg))(fp); 1207 return (1); 1208 1209 default: 1210 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1211 } 1212} 1213 1214int 1215ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1216{ 1217 long l; 1218 1219 l = a->id - b->id; 1220 if (l == 0L) 1221 return (0); 1222 else 1223 return ((l > 0) ? 1:-1); 1224} 1225 1226int 1227ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1228 const SSL_CIPHER * const *bp) 1229{ 1230 long l; 1231 1232 l = (*ap)->id - (*bp)->id; 1233 if (l == 0L) 1234 return (0); 1235 else 1236 return ((l > 0) ? 1:-1); 1237} 1238 1239/* 1240 * Return a STACK of the ciphers available for the SSL and in order of 1241 * preference. 1242 */ 1243STACK_OF(SSL_CIPHER) * 1244SSL_get_ciphers(const SSL *s) 1245{ 1246 if (s != NULL) { 1247 if (s->cipher_list != NULL) { 1248 return (s->cipher_list); 1249 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1250 return (s->ctx->cipher_list); 1251 } 1252 } 1253 return (NULL); 1254} 1255 1256/* 1257 * Return a STACK of the ciphers available for the SSL and in order of 1258 * algorithm id. 1259 */ 1260STACK_OF(SSL_CIPHER) * 1261ssl_get_ciphers_by_id(SSL *s) 1262{ 1263 if (s != NULL) { 1264 if (s->cipher_list_by_id != NULL) { 1265 return (s->cipher_list_by_id); 1266 } else if ((s->ctx != NULL) && 1267 (s->ctx->cipher_list_by_id != NULL)) { 1268 return (s->ctx->cipher_list_by_id); 1269 } 1270 } 1271 return (NULL); 1272} 1273 1274/* The old interface to get the same thing as SSL_get_ciphers(). */ 1275const char * 1276SSL_get_cipher_list(const SSL *s, int n) 1277{ 1278 SSL_CIPHER *c; 1279 STACK_OF(SSL_CIPHER) *sk; 1280 1281 if (s == NULL) 1282 return (NULL); 1283 sk = SSL_get_ciphers(s); 1284 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1285 return (NULL); 1286 c = sk_SSL_CIPHER_value(sk, n); 1287 if (c == NULL) 1288 return (NULL); 1289 return (c->name); 1290} 1291 1292/* Specify the ciphers to be used by default by the SSL_CTX. */ 1293int 1294SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1295{ 1296 STACK_OF(SSL_CIPHER) *sk; 1297 1298 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1299 &ctx->cipher_list_by_id, str); 1300 /* 1301 * ssl_create_cipher_list may return an empty stack if it 1302 * was unable to find a cipher matching the given rule string 1303 * (for example if the rule string specifies a cipher which 1304 * has been disabled). This is not an error as far as 1305 * ssl_create_cipher_list is concerned, and hence 1306 * ctx->cipher_list and ctx->cipher_list_by_id has been 1307 * updated. 1308 */ 1309 if (sk == NULL) 1310 return (0); 1311 else if (sk_SSL_CIPHER_num(sk) == 0) { 1312 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1313 return (0); 1314 } 1315 return (1); 1316} 1317 1318/* Specify the ciphers to be used by the SSL. */ 1319int 1320SSL_set_cipher_list(SSL *s, const char *str) 1321{ 1322 STACK_OF(SSL_CIPHER) *sk; 1323 1324 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1325 &s->cipher_list_by_id, str); 1326 /* see comment in SSL_CTX_set_cipher_list */ 1327 if (sk == NULL) 1328 return (0); 1329 else if (sk_SSL_CIPHER_num(sk) == 0) { 1330 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1331 return (0); 1332 } 1333 return (1); 1334} 1335 1336/* works well for SSLv2, not so good for SSLv3 */ 1337char * 1338SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1339{ 1340 char *end; 1341 STACK_OF(SSL_CIPHER) *sk; 1342 SSL_CIPHER *c; 1343 size_t curlen = 0; 1344 int i; 1345 1346 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1347 return (NULL); 1348 1349 sk = s->session->ciphers; 1350 if (sk_SSL_CIPHER_num(sk) == 0) 1351 return (NULL); 1352 1353 buf[0] = '\0'; 1354 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1355 c = sk_SSL_CIPHER_value(sk, i); 1356 end = buf + curlen; 1357 if (strlcat(buf, c->name, len) >= len || 1358 (curlen = strlcat(buf, ":", len)) >= len) { 1359 /* remove truncated cipher from list */ 1360 *end = '\0'; 1361 break; 1362 } 1363 } 1364 /* remove trailing colon */ 1365 if ((end = strrchr(buf, ':')) != NULL) 1366 *end = '\0'; 1367 return (buf); 1368} 1369 1370int 1371ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1372 size_t maxlen, size_t *outlen) 1373{ 1374 SSL_CIPHER *cipher; 1375 int ciphers = 0; 1376 CBB cbb; 1377 int i; 1378 1379 *outlen = 0; 1380 1381 if (sk == NULL) 1382 return (0); 1383 1384 if (!CBB_init_fixed(&cbb, p, maxlen)) 1385 goto err; 1386 1387 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1388 cipher = sk_SSL_CIPHER_value(sk, i); 1389 1390 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1391 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1392 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1393 continue; 1394 1395 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher))) 1396 goto err; 1397 1398 ciphers++; 1399 } 1400 1401 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1402 if (ciphers > 0 && !s->renegotiate) { 1403 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1404 goto err; 1405 } 1406 1407 if (!CBB_finish(&cbb, NULL, outlen)) 1408 goto err; 1409 1410 return 1; 1411 1412 err: 1413 CBB_cleanup(&cbb); 1414 1415 return 0; 1416} 1417 1418STACK_OF(SSL_CIPHER) * 1419ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1420{ 1421 CBS cbs; 1422 const SSL_CIPHER *c; 1423 STACK_OF(SSL_CIPHER) *sk = NULL; 1424 unsigned long cipher_id; 1425 uint16_t cipher_value, max_version; 1426 1427 if (s->s3) 1428 s->s3->send_connection_binding = 0; 1429 1430 /* 1431 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1432 */ 1433 if (num < 2 || num > 0x10000 - 2) { 1434 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1435 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1436 return (NULL); 1437 } 1438 1439 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1440 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1441 goto err; 1442 } 1443 1444 CBS_init(&cbs, p, num); 1445 while (CBS_len(&cbs) > 0) { 1446 if (!CBS_get_u16(&cbs, &cipher_value)) { 1447 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1448 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1449 goto err; 1450 } 1451 1452 cipher_id = SSL3_CK_ID | cipher_value; 1453 1454 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1455 /* 1456 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1457 * renegotiating. 1458 */ 1459 if (s->renegotiate) { 1460 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1461 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1462 ssl3_send_alert(s, SSL3_AL_FATAL, 1463 SSL_AD_HANDSHAKE_FAILURE); 1464 1465 goto err; 1466 } 1467 s->s3->send_connection_binding = 1; 1468 continue; 1469 } 1470 1471 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1472 /* 1473 * TLS_FALLBACK_SCSV indicates that the client 1474 * previously tried a higher protocol version. 1475 * Fail if the current version is an unexpected 1476 * downgrade. 1477 */ 1478 max_version = ssl_max_server_version(s); 1479 if (max_version == 0 || s->version < max_version) { 1480 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1481 SSL_R_INAPPROPRIATE_FALLBACK); 1482 if (s->s3 != NULL) 1483 ssl3_send_alert(s, SSL3_AL_FATAL, 1484 SSL_AD_INAPPROPRIATE_FALLBACK); 1485 goto err; 1486 } 1487 continue; 1488 } 1489 1490 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1491 if (!sk_SSL_CIPHER_push(sk, c)) { 1492 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1493 ERR_R_MALLOC_FAILURE); 1494 goto err; 1495 } 1496 } 1497 } 1498 1499 return (sk); 1500 1501err: 1502 sk_SSL_CIPHER_free(sk); 1503 1504 return (NULL); 1505} 1506 1507 1508/* 1509 * Return a servername extension value if provided in Client Hello, or NULL. 1510 * So far, only host_name types are defined (RFC 3546). 1511 */ 1512const char * 1513SSL_get_servername(const SSL *s, const int type) 1514{ 1515 if (type != TLSEXT_NAMETYPE_host_name) 1516 return (NULL); 1517 1518 return (s->session && !s->tlsext_hostname ? 1519 s->session->tlsext_hostname : 1520 s->tlsext_hostname); 1521} 1522 1523int 1524SSL_get_servername_type(const SSL *s) 1525{ 1526 if (s->session && 1527 (!s->tlsext_hostname ? 1528 s->session->tlsext_hostname : s->tlsext_hostname)) 1529 return (TLSEXT_NAMETYPE_host_name); 1530 return (-1); 1531} 1532 1533/* 1534 * SSL_select_next_proto implements the standard protocol selection. It is 1535 * expected that this function is called from the callback set by 1536 * SSL_CTX_set_next_proto_select_cb. 1537 * 1538 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1539 * strings. The length byte itself is not included in the length. A byte 1540 * string of length 0 is invalid. No byte string may be truncated. 1541 * 1542 * The current, but experimental algorithm for selecting the protocol is: 1543 * 1544 * 1) If the server doesn't support NPN then this is indicated to the 1545 * callback. In this case, the client application has to abort the connection 1546 * or have a default application level protocol. 1547 * 1548 * 2) If the server supports NPN, but advertises an empty list then the 1549 * client selects the first protcol in its list, but indicates via the 1550 * API that this fallback case was enacted. 1551 * 1552 * 3) Otherwise, the client finds the first protocol in the server's list 1553 * that it supports and selects this protocol. This is because it's 1554 * assumed that the server has better information about which protocol 1555 * a client should use. 1556 * 1557 * 4) If the client doesn't support any of the server's advertised 1558 * protocols, then this is treated the same as case 2. 1559 * 1560 * It returns either 1561 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1562 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1563 */ 1564int 1565SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1566 const unsigned char *server, unsigned int server_len, 1567 const unsigned char *client, unsigned int client_len) 1568{ 1569 unsigned int i, j; 1570 const unsigned char *result; 1571 int status = OPENSSL_NPN_UNSUPPORTED; 1572 1573 /* 1574 * For each protocol in server preference order, 1575 * see if we support it. 1576 */ 1577 for (i = 0; i < server_len; ) { 1578 for (j = 0; j < client_len; ) { 1579 if (server[i] == client[j] && 1580 memcmp(&server[i + 1], 1581 &client[j + 1], server[i]) == 0) { 1582 /* We found a match */ 1583 result = &server[i]; 1584 status = OPENSSL_NPN_NEGOTIATED; 1585 goto found; 1586 } 1587 j += client[j]; 1588 j++; 1589 } 1590 i += server[i]; 1591 i++; 1592 } 1593 1594 /* There's no overlap between our protocols and the server's list. */ 1595 result = client; 1596 status = OPENSSL_NPN_NO_OVERLAP; 1597 1598found: 1599 *out = (unsigned char *) result + 1; 1600 *outlen = result[0]; 1601 return (status); 1602} 1603 1604/* 1605 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1606 * requested protocol for this connection and returns 0. If the client didn't 1607 * request any protocol, then *data is set to NULL. 1608 * 1609 * Note that the client can request any protocol it chooses. The value returned 1610 * from this function need not be a member of the list of supported protocols 1611 * provided by the callback. 1612 */ 1613void 1614SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1615 unsigned *len) 1616{ 1617 *data = s->internal->next_proto_negotiated; 1618 if (!*data) { 1619 *len = 0; 1620 } else { 1621 *len = s->internal->next_proto_negotiated_len; 1622 } 1623} 1624 1625/* 1626 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1627 * TLS server needs a list of supported protocols for Next Protocol 1628 * Negotiation. The returned list must be in wire format. The list is returned 1629 * by setting |out| to point to it and |outlen| to its length. This memory will 1630 * not be modified, but one should assume that the SSL* keeps a reference to 1631 * it. 1632 * 1633 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1634 * Otherwise, no such extension will be included in the ServerHello. 1635 */ 1636void 1637SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1638 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1639{ 1640 ctx->internal->next_protos_advertised_cb = cb; 1641 ctx->internal->next_protos_advertised_cb_arg = arg; 1642} 1643 1644/* 1645 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1646 * client needs to select a protocol from the server's provided list. |out| 1647 * must be set to point to the selected protocol (which may be within |in|). 1648 * The length of the protocol name must be written into |outlen|. The server's 1649 * advertised protocols are provided in |in| and |inlen|. The callback can 1650 * assume that |in| is syntactically valid. 1651 * 1652 * The client must select a protocol. It is fatal to the connection if this 1653 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1654 */ 1655void 1656SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1657 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1658 unsigned int inlen, void *arg), void *arg) 1659{ 1660 ctx->internal->next_proto_select_cb = cb; 1661 ctx->internal->next_proto_select_cb_arg = arg; 1662} 1663 1664/* 1665 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1666 * protocols, which must be in wire-format (i.e. a series of non-empty, 1667 * 8-bit length-prefixed strings). Returns 0 on success. 1668 */ 1669int 1670SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1671 unsigned int protos_len) 1672{ 1673 free(ctx->internal->alpn_client_proto_list); 1674 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1675 return (1); 1676 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1677 ctx->internal->alpn_client_proto_list_len = protos_len; 1678 1679 return (0); 1680} 1681 1682/* 1683 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1684 * protocols, which must be in wire-format (i.e. a series of non-empty, 1685 * 8-bit length-prefixed strings). Returns 0 on success. 1686 */ 1687int 1688SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1689 unsigned int protos_len) 1690{ 1691 free(ssl->internal->alpn_client_proto_list); 1692 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1693 return (1); 1694 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1695 ssl->internal->alpn_client_proto_list_len = protos_len; 1696 1697 return (0); 1698} 1699 1700/* 1701 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1702 * ClientHello processing in order to select an ALPN protocol from the 1703 * client's list of offered protocols. 1704 */ 1705void 1706SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1707 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1708 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1709{ 1710 ctx->internal->alpn_select_cb = cb; 1711 ctx->internal->alpn_select_cb_arg = arg; 1712} 1713 1714/* 1715 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1716 * it sets data to point to len bytes of protocol name (not including the 1717 * leading length-prefix byte). If the server didn't respond with* a negotiated 1718 * protocol then len will be zero. 1719 */ 1720void 1721SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1722 unsigned *len) 1723{ 1724 *data = NULL; 1725 *len = 0; 1726 1727 if (ssl->s3 != NULL) { 1728 *data = ssl->s3->alpn_selected; 1729 *len = ssl->s3->alpn_selected_len; 1730 } 1731} 1732 1733int 1734SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1735 const char *label, size_t llen, const unsigned char *p, size_t plen, 1736 int use_context) 1737{ 1738 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1739 label, llen, p, plen, use_context)); 1740} 1741 1742static unsigned long 1743ssl_session_hash(const SSL_SESSION *a) 1744{ 1745 unsigned long l; 1746 1747 l = (unsigned long) 1748 ((unsigned int) a->session_id[0] )| 1749 ((unsigned int) a->session_id[1]<< 8L)| 1750 ((unsigned long)a->session_id[2]<<16L)| 1751 ((unsigned long)a->session_id[3]<<24L); 1752 return (l); 1753} 1754 1755/* 1756 * NB: If this function (or indeed the hash function which uses a sort of 1757 * coarser function than this one) is changed, ensure 1758 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1759 * able to construct an SSL_SESSION that will collide with any existing session 1760 * with a matching session ID. 1761 */ 1762static int 1763ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1764{ 1765 if (a->ssl_version != b->ssl_version) 1766 return (1); 1767 if (a->session_id_length != b->session_id_length) 1768 return (1); 1769 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1770 return (1); 1771 return (0); 1772} 1773 1774/* 1775 * These wrapper functions should remain rather than redeclaring 1776 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1777 * variable. The reason is that the functions aren't static, they're exposed via 1778 * ssl.h. 1779 */ 1780static unsigned long 1781ssl_session_LHASH_HASH(const void *arg) 1782{ 1783 const SSL_SESSION *a = arg; 1784 1785 return ssl_session_hash(a); 1786} 1787 1788static int 1789ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1790{ 1791 const SSL_SESSION *a = arg1; 1792 const SSL_SESSION *b = arg2; 1793 1794 return ssl_session_cmp(a, b); 1795} 1796 1797SSL_CTX * 1798SSL_CTX_new(const SSL_METHOD *meth) 1799{ 1800 SSL_CTX *ret; 1801 1802 if (meth == NULL) { 1803 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1804 return (NULL); 1805 } 1806 1807 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1808 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1809 return (NULL); 1810 } 1811 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1812 free(ret); 1813 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1814 return (NULL); 1815 } 1816 1817 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1818 SSLerr(SSL_F_SSL_CTX_NEW, 1819 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1820 goto err; 1821 } 1822 1823 ret->method = meth; 1824 1825 ret->cert_store = NULL; 1826 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1827 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1828 ret->session_cache_head = NULL; 1829 ret->session_cache_tail = NULL; 1830 1831 /* We take the system default */ 1832 ret->session_timeout = meth->get_timeout(); 1833 1834 ret->new_session_cb = 0; 1835 ret->remove_session_cb = 0; 1836 ret->get_session_cb = 0; 1837 ret->generate_session_id = 0; 1838 1839 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1840 1841 ret->references = 1; 1842 ret->quiet_shutdown = 0; 1843 1844 ret->info_callback = NULL; 1845 1846 ret->app_verify_callback = 0; 1847 ret->app_verify_arg = NULL; 1848 1849 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1850 ret->read_ahead = 0; 1851 ret->msg_callback = 0; 1852 ret->msg_callback_arg = NULL; 1853 ret->verify_mode = SSL_VERIFY_NONE; 1854 ret->sid_ctx_length = 0; 1855 ret->default_verify_callback = NULL; 1856 if ((ret->cert = ssl_cert_new()) == NULL) 1857 goto err; 1858 1859 ret->default_passwd_callback = 0; 1860 ret->default_passwd_callback_userdata = NULL; 1861 ret->client_cert_cb = 0; 1862 ret->app_gen_cookie_cb = 0; 1863 ret->app_verify_cookie_cb = 0; 1864 1865 ret->sessions = lh_SSL_SESSION_new(); 1866 if (ret->sessions == NULL) 1867 goto err; 1868 ret->cert_store = X509_STORE_new(); 1869 if (ret->cert_store == NULL) 1870 goto err; 1871 1872 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1873 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1874 if (ret->cipher_list == NULL || 1875 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1876 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1877 goto err2; 1878 } 1879 1880 ret->param = X509_VERIFY_PARAM_new(); 1881 if (!ret->param) 1882 goto err; 1883 1884 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1885 SSLerr(SSL_F_SSL_CTX_NEW, 1886 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1887 goto err2; 1888 } 1889 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1890 SSLerr(SSL_F_SSL_CTX_NEW, 1891 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1892 goto err2; 1893 } 1894 1895 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1896 goto err; 1897 1898 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1899 1900 ret->extra_certs = NULL; 1901 1902 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1903 1904 ret->tlsext_servername_callback = 0; 1905 ret->tlsext_servername_arg = NULL; 1906 1907 /* Setup RFC4507 ticket keys */ 1908 arc4random_buf(ret->tlsext_tick_key_name, 16); 1909 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1910 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1911 1912 ret->tlsext_status_cb = 0; 1913 ret->tlsext_status_arg = NULL; 1914 1915 ret->internal->next_protos_advertised_cb = 0; 1916 ret->internal->next_proto_select_cb = 0; 1917#ifndef OPENSSL_NO_ENGINE 1918 ret->client_cert_engine = NULL; 1919#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1920#define eng_strx(x) #x 1921#define eng_str(x) eng_strx(x) 1922 /* Use specific client engine automatically... ignore errors */ 1923 { 1924 ENGINE *eng; 1925 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1926 if (!eng) { 1927 ERR_clear_error(); 1928 ENGINE_load_builtin_engines(); 1929 eng = ENGINE_by_id(eng_str( 1930 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1931 } 1932 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1933 ERR_clear_error(); 1934 } 1935#endif 1936#endif 1937 /* 1938 * Default is to connect to non-RI servers. When RI is more widely 1939 * deployed might change this. 1940 */ 1941 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1942 1943 return (ret); 1944err: 1945 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1946err2: 1947 SSL_CTX_free(ret); 1948 return (NULL); 1949} 1950 1951void 1952SSL_CTX_free(SSL_CTX *a) 1953{ 1954 int i; 1955 1956 if (a == NULL) 1957 return; 1958 1959 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1960 if (i > 0) 1961 return; 1962 1963 if (a->param) 1964 X509_VERIFY_PARAM_free(a->param); 1965 1966 /* 1967 * Free internal session cache. However: the remove_cb() may reference 1968 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1969 * after the sessions were flushed. 1970 * As the ex_data handling routines might also touch the session cache, 1971 * the most secure solution seems to be: empty (flush) the cache, then 1972 * free ex_data, then finally free the cache. 1973 * (See ticket [openssl.org #212].) 1974 */ 1975 if (a->sessions != NULL) 1976 SSL_CTX_flush_sessions(a, 0); 1977 1978 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1979 1980 if (a->sessions != NULL) 1981 lh_SSL_SESSION_free(a->sessions); 1982 1983 if (a->cert_store != NULL) 1984 X509_STORE_free(a->cert_store); 1985 if (a->cipher_list != NULL) 1986 sk_SSL_CIPHER_free(a->cipher_list); 1987 if (a->cipher_list_by_id != NULL) 1988 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1989 if (a->cert != NULL) 1990 ssl_cert_free(a->cert); 1991 if (a->client_CA != NULL) 1992 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1993 if (a->extra_certs != NULL) 1994 sk_X509_pop_free(a->extra_certs, X509_free); 1995 1996#ifndef OPENSSL_NO_SRTP 1997 if (a->srtp_profiles) 1998 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1999#endif 2000 2001#ifndef OPENSSL_NO_ENGINE 2002 if (a->client_cert_engine) 2003 ENGINE_finish(a->client_cert_engine); 2004#endif 2005 2006 free(a->internal->alpn_client_proto_list); 2007 2008 free(a->internal); 2009 free(a); 2010} 2011 2012void 2013SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2014{ 2015 ctx->default_passwd_callback = cb; 2016} 2017 2018void 2019SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2020{ 2021 ctx->default_passwd_callback_userdata = u; 2022} 2023 2024void 2025SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2026 void *), void *arg) 2027{ 2028 ctx->app_verify_callback = cb; 2029 ctx->app_verify_arg = arg; 2030} 2031 2032void 2033SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2034{ 2035 ctx->verify_mode = mode; 2036 ctx->default_verify_callback = cb; 2037} 2038 2039void 2040SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2041{ 2042 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2043} 2044 2045void 2046ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2047{ 2048 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2049 int have_ecc_cert, have_ecdh_tmp; 2050 unsigned long mask_k, mask_a; 2051 X509 *x = NULL; 2052 CERT_PKEY *cpk; 2053 2054 if (c == NULL) 2055 return; 2056 2057 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2058 c->dh_tmp_auto != 0); 2059 2060 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2061 c->ecdh_tmp_auto != 0); 2062 2063 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2064 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2065 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2066 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2067 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2068 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2069/* FIX THIS EAY EAY EAY */ 2070 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2071 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2072 mask_k = 0; 2073 mask_a = 0; 2074 2075 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2076 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2077 mask_k |= SSL_kGOST; 2078 mask_a |= SSL_aGOST01; 2079 } 2080 2081 if (rsa_enc) 2082 mask_k|=SSL_kRSA; 2083 2084 if (dh_tmp) 2085 mask_k|=SSL_kDHE; 2086 2087 if (rsa_enc || rsa_sign) 2088 mask_a|=SSL_aRSA; 2089 2090 if (dsa_sign) 2091 mask_a|=SSL_aDSS; 2092 2093 mask_a|=SSL_aNULL; 2094 2095 /* 2096 * An ECC certificate may be usable for ECDH and/or 2097 * ECDSA cipher suites depending on the key usage extension. 2098 */ 2099 if (have_ecc_cert) { 2100 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2101 2102 /* This call populates extension flags (ex_flags). */ 2103 X509_check_purpose(x, -1, 0); 2104 2105 /* Key usage, if present, must allow signing. */ 2106 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2107 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2108 mask_a|=SSL_aECDSA; 2109 } 2110 2111 if (have_ecdh_tmp) 2112 mask_k|=SSL_kECDHE; 2113 2114 c->mask_k = mask_k; 2115 c->mask_a = mask_a; 2116 c->valid = 1; 2117} 2118 2119int 2120ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2121{ 2122 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2123 unsigned long alg_a; 2124 2125 alg_a = cs->algorithm_auth; 2126 2127 if (alg_a & SSL_aECDSA) { 2128 /* This call populates extension flags (ex_flags). */ 2129 X509_check_purpose(x, -1, 0); 2130 2131 /* Key usage, if present, must allow signing. */ 2132 if ((x->ex_flags & EXFLAG_KUSAGE) && 2133 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2134 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2135 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2136 return (0); 2137 } 2138 } 2139 2140 return (1); 2141} 2142 2143CERT_PKEY * 2144ssl_get_server_send_pkey(const SSL *s) 2145{ 2146 unsigned long alg_a; 2147 CERT *c; 2148 int i; 2149 2150 c = s->cert; 2151 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2152 2153 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2154 2155 if (alg_a & SSL_aECDSA) { 2156 i = SSL_PKEY_ECC; 2157 } else if (alg_a & SSL_aDSS) { 2158 i = SSL_PKEY_DSA_SIGN; 2159 } else if (alg_a & SSL_aRSA) { 2160 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2161 i = SSL_PKEY_RSA_SIGN; 2162 else 2163 i = SSL_PKEY_RSA_ENC; 2164 } else if (alg_a & SSL_aGOST01) { 2165 i = SSL_PKEY_GOST01; 2166 } else { /* if (alg_a & SSL_aNULL) */ 2167 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2168 return (NULL); 2169 } 2170 2171 return (c->pkeys + i); 2172} 2173 2174X509 * 2175ssl_get_server_send_cert(const SSL *s) 2176{ 2177 CERT_PKEY *cpk; 2178 2179 cpk = ssl_get_server_send_pkey(s); 2180 if (!cpk) 2181 return (NULL); 2182 return (cpk->x509); 2183} 2184 2185EVP_PKEY * 2186ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2187{ 2188 unsigned long alg_a; 2189 CERT *c; 2190 int idx = -1; 2191 2192 alg_a = cipher->algorithm_auth; 2193 c = s->cert; 2194 2195 if ((alg_a & SSL_aDSS) && 2196 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2197 idx = SSL_PKEY_DSA_SIGN; 2198 else if (alg_a & SSL_aRSA) { 2199 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2200 idx = SSL_PKEY_RSA_SIGN; 2201 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2202 idx = SSL_PKEY_RSA_ENC; 2203 } else if ((alg_a & SSL_aECDSA) && 2204 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2205 idx = SSL_PKEY_ECC; 2206 if (idx == -1) { 2207 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2208 return (NULL); 2209 } 2210 if (pmd) 2211 *pmd = c->pkeys[idx].digest; 2212 return (c->pkeys[idx].privatekey); 2213} 2214 2215DH * 2216ssl_get_auto_dh(SSL *s) 2217{ 2218 CERT_PKEY *cpk; 2219 int keylen; 2220 DH *dhp; 2221 2222 if (s->cert->dh_tmp_auto == 2) { 2223 keylen = 1024; 2224 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2225 keylen = 1024; 2226 if (s->s3->tmp.new_cipher->strength_bits == 256) 2227 keylen = 3072; 2228 } else { 2229 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2230 return (NULL); 2231 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2232 return (NULL); 2233 keylen = EVP_PKEY_bits(cpk->privatekey); 2234 } 2235 2236 if ((dhp = DH_new()) == NULL) 2237 return (NULL); 2238 2239 dhp->g = BN_new(); 2240 if (dhp->g != NULL) 2241 BN_set_word(dhp->g, 2); 2242 2243 if (keylen >= 8192) 2244 dhp->p = get_rfc3526_prime_8192(NULL); 2245 else if (keylen >= 4096) 2246 dhp->p = get_rfc3526_prime_4096(NULL); 2247 else if (keylen >= 3072) 2248 dhp->p = get_rfc3526_prime_3072(NULL); 2249 else if (keylen >= 2048) 2250 dhp->p = get_rfc3526_prime_2048(NULL); 2251 else if (keylen >= 1536) 2252 dhp->p = get_rfc3526_prime_1536(NULL); 2253 else 2254 dhp->p = get_rfc2409_prime_1024(NULL); 2255 2256 if (dhp->p == NULL || dhp->g == NULL) { 2257 DH_free(dhp); 2258 return (NULL); 2259 } 2260 return (dhp); 2261} 2262 2263void 2264ssl_update_cache(SSL *s, int mode) 2265{ 2266 int i; 2267 2268 /* 2269 * If the session_id_length is 0, we are not supposed to cache it, 2270 * and it would be rather hard to do anyway :-) 2271 */ 2272 if (s->session->session_id_length == 0) 2273 return; 2274 2275 i = s->session_ctx->session_cache_mode; 2276 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2277 || SSL_CTX_add_session(s->session_ctx, s->session)) 2278 && (s->session_ctx->new_session_cb != NULL)) { 2279 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2280 if (!s->session_ctx->new_session_cb(s, s->session)) 2281 SSL_SESSION_free(s->session); 2282 } 2283 2284 /* auto flush every 255 connections */ 2285 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2286 ((i & mode) == mode)) { 2287 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2288 s->session_ctx->stats.sess_connect_good : 2289 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2290 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2291 } 2292 } 2293} 2294 2295const SSL_METHOD * 2296SSL_get_ssl_method(SSL *s) 2297{ 2298 return (s->method); 2299} 2300 2301int 2302SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2303{ 2304 int conn = -1; 2305 int ret = 1; 2306 2307 if (s->method != meth) { 2308 if (s->handshake_func != NULL) 2309 conn = (s->handshake_func == s->method->ssl_connect); 2310 2311 if (s->method->version == meth->version) 2312 s->method = meth; 2313 else { 2314 s->method->ssl_free(s); 2315 s->method = meth; 2316 ret = s->method->ssl_new(s); 2317 } 2318 2319 if (conn == 1) 2320 s->handshake_func = meth->ssl_connect; 2321 else if (conn == 0) 2322 s->handshake_func = meth->ssl_accept; 2323 } 2324 return (ret); 2325} 2326 2327int 2328SSL_get_error(const SSL *s, int i) 2329{ 2330 int reason; 2331 unsigned long l; 2332 BIO *bio; 2333 2334 if (i > 0) 2335 return (SSL_ERROR_NONE); 2336 2337 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2338 * etc, where we do encode the error */ 2339 if ((l = ERR_peek_error()) != 0) { 2340 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2341 return (SSL_ERROR_SYSCALL); 2342 else 2343 return (SSL_ERROR_SSL); 2344 } 2345 2346 if ((i < 0) && SSL_want_read(s)) { 2347 bio = SSL_get_rbio(s); 2348 if (BIO_should_read(bio)) { 2349 return (SSL_ERROR_WANT_READ); 2350 } else if (BIO_should_write(bio)) { 2351 /* 2352 * This one doesn't make too much sense... We never 2353 * try to write to the rbio, and an application 2354 * program where rbio and wbio are separate couldn't 2355 * even know what it should wait for. However if we 2356 * ever set s->rwstate incorrectly (so that we have 2357 * SSL_want_read(s) instead of SSL_want_write(s)) 2358 * and rbio and wbio *are* the same, this test works 2359 * around that bug; so it might be safer to keep it. 2360 */ 2361 return (SSL_ERROR_WANT_WRITE); 2362 } else if (BIO_should_io_special(bio)) { 2363 reason = BIO_get_retry_reason(bio); 2364 if (reason == BIO_RR_CONNECT) 2365 return (SSL_ERROR_WANT_CONNECT); 2366 else if (reason == BIO_RR_ACCEPT) 2367 return (SSL_ERROR_WANT_ACCEPT); 2368 else 2369 return (SSL_ERROR_SYSCALL); /* unknown */ 2370 } 2371 } 2372 2373 if ((i < 0) && SSL_want_write(s)) { 2374 bio = SSL_get_wbio(s); 2375 if (BIO_should_write(bio)) { 2376 return (SSL_ERROR_WANT_WRITE); 2377 } else if (BIO_should_read(bio)) { 2378 /* 2379 * See above (SSL_want_read(s) with 2380 * BIO_should_write(bio)) 2381 */ 2382 return (SSL_ERROR_WANT_READ); 2383 } else if (BIO_should_io_special(bio)) { 2384 reason = BIO_get_retry_reason(bio); 2385 if (reason == BIO_RR_CONNECT) 2386 return (SSL_ERROR_WANT_CONNECT); 2387 else if (reason == BIO_RR_ACCEPT) 2388 return (SSL_ERROR_WANT_ACCEPT); 2389 else 2390 return (SSL_ERROR_SYSCALL); 2391 } 2392 } 2393 if ((i < 0) && SSL_want_x509_lookup(s)) { 2394 return (SSL_ERROR_WANT_X509_LOOKUP); 2395 } 2396 2397 if (i == 0) { 2398 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2399 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2400 return (SSL_ERROR_ZERO_RETURN); 2401 } 2402 return (SSL_ERROR_SYSCALL); 2403} 2404 2405int 2406SSL_do_handshake(SSL *s) 2407{ 2408 int ret = 1; 2409 2410 if (s->handshake_func == NULL) { 2411 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2412 return (-1); 2413 } 2414 2415 s->method->ssl_renegotiate_check(s); 2416 2417 if (SSL_in_init(s) || SSL_in_before(s)) { 2418 ret = s->handshake_func(s); 2419 } 2420 return (ret); 2421} 2422 2423/* 2424 * For the next 2 functions, SSL_clear() sets shutdown and so 2425 * one of these calls will reset it 2426 */ 2427void 2428SSL_set_accept_state(SSL *s) 2429{ 2430 s->server = 1; 2431 s->shutdown = 0; 2432 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2433 s->handshake_func = s->method->ssl_accept; 2434 /* clear the current cipher */ 2435 ssl_clear_cipher_ctx(s); 2436 ssl_clear_hash_ctx(&s->read_hash); 2437 ssl_clear_hash_ctx(&s->write_hash); 2438} 2439 2440void 2441SSL_set_connect_state(SSL *s) 2442{ 2443 s->server = 0; 2444 s->shutdown = 0; 2445 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2446 s->handshake_func = s->method->ssl_connect; 2447 /* clear the current cipher */ 2448 ssl_clear_cipher_ctx(s); 2449 ssl_clear_hash_ctx(&s->read_hash); 2450 ssl_clear_hash_ctx(&s->write_hash); 2451} 2452 2453int 2454ssl_undefined_function(SSL *s) 2455{ 2456 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2457 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2458 return (0); 2459} 2460 2461int 2462ssl_undefined_void_function(void) 2463{ 2464 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2465 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2466 return (0); 2467} 2468 2469int 2470ssl_undefined_const_function(const SSL *s) 2471{ 2472 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2473 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2474 return (0); 2475} 2476 2477const char * 2478ssl_version_string(int ver) 2479{ 2480 switch (ver) { 2481 case DTLS1_VERSION: 2482 return (SSL_TXT_DTLS1); 2483 case TLS1_VERSION: 2484 return (SSL_TXT_TLSV1); 2485 case TLS1_1_VERSION: 2486 return (SSL_TXT_TLSV1_1); 2487 case TLS1_2_VERSION: 2488 return (SSL_TXT_TLSV1_2); 2489 default: 2490 return ("unknown"); 2491 } 2492} 2493 2494const char * 2495SSL_get_version(const SSL *s) 2496{ 2497 return ssl_version_string(s->version); 2498} 2499 2500int 2501ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver) 2502{ 2503 uint16_t min_version, max_version; 2504 2505 /* 2506 * The enabled versions have to be a contiguous range, which means we 2507 * cannot enable and disable single versions at our whim, even though 2508 * this is what the OpenSSL flags allow. The historical way this has 2509 * been handled is by making a flag mean that all higher versions 2510 * are disabled, if any version lower than the flag is enabled. 2511 */ 2512 2513 min_version = 0; 2514 max_version = TLS1_2_VERSION; 2515 2516 if ((s->options & SSL_OP_NO_TLSv1) == 0) 2517 min_version = TLS1_VERSION; 2518 else if ((s->options & SSL_OP_NO_TLSv1_1) == 0) 2519 min_version = TLS1_1_VERSION; 2520 else if ((s->options & SSL_OP_NO_TLSv1_2) == 0) 2521 min_version = TLS1_2_VERSION; 2522 2523 if ((s->options & SSL_OP_NO_TLSv1_2) && min_version < TLS1_2_VERSION) 2524 max_version = TLS1_1_VERSION; 2525 if ((s->options & SSL_OP_NO_TLSv1_1) && min_version < TLS1_1_VERSION) 2526 max_version = TLS1_VERSION; 2527 if ((s->options & SSL_OP_NO_TLSv1) && min_version < TLS1_VERSION) 2528 max_version = 0; 2529 2530 /* Everything has been disabled... */ 2531 if (min_version == 0 || max_version == 0) 2532 return 0; 2533 2534 if (min_ver != NULL) 2535 *min_ver = min_version; 2536 if (max_ver != NULL) 2537 *max_ver = max_version; 2538 2539 return 1; 2540} 2541 2542int 2543ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver) 2544{ 2545 uint16_t min_version, max_version, shared_version; 2546 2547 *max_ver = 0; 2548 2549 if (peer_ver >= TLS1_2_VERSION) 2550 shared_version = TLS1_2_VERSION; 2551 else if (peer_ver >= TLS1_1_VERSION) 2552 shared_version = TLS1_1_VERSION; 2553 else if (peer_ver >= TLS1_VERSION) 2554 shared_version = TLS1_VERSION; 2555 else 2556 return 0; 2557 2558 if (!ssl_enabled_version_range(s, &min_version, &max_version)) 2559 return 0; 2560 2561 if (shared_version < min_version) 2562 return 0; 2563 2564 if (shared_version > max_version) 2565 shared_version = max_version; 2566 2567 *max_ver = shared_version; 2568 2569 return 1; 2570} 2571 2572uint16_t 2573ssl_max_server_version(SSL *s) 2574{ 2575 uint16_t max_version; 2576 2577 /* 2578 * The SSL method will be changed during version negotiation, as such 2579 * we want to use the SSL method from the context. 2580 */ 2581 max_version = s->ctx->method->version; 2582 2583 if (SSL_IS_DTLS(s)) 2584 return (DTLS1_VERSION); 2585 2586 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2587 max_version >= TLS1_2_VERSION) 2588 return (TLS1_2_VERSION); 2589 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2590 max_version >= TLS1_1_VERSION) 2591 return (TLS1_1_VERSION); 2592 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2593 max_version >= TLS1_VERSION) 2594 return (TLS1_VERSION); 2595 2596 return (0); 2597} 2598 2599SSL * 2600SSL_dup(SSL *s) 2601{ 2602 STACK_OF(X509_NAME) *sk; 2603 X509_NAME *xn; 2604 SSL *ret; 2605 int i; 2606 2607 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2608 return (NULL); 2609 2610 ret->version = s->version; 2611 ret->type = s->type; 2612 ret->method = s->method; 2613 2614 if (s->session != NULL) { 2615 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2616 SSL_copy_session_id(ret, s); 2617 } else { 2618 /* 2619 * No session has been established yet, so we have to expect 2620 * that s->cert or ret->cert will be changed later -- 2621 * they should not both point to the same object, 2622 * and thus we can't use SSL_copy_session_id. 2623 */ 2624 2625 ret->method->ssl_free(ret); 2626 ret->method = s->method; 2627 ret->method->ssl_new(ret); 2628 2629 if (s->cert != NULL) { 2630 if (ret->cert != NULL) { 2631 ssl_cert_free(ret->cert); 2632 } 2633 ret->cert = ssl_cert_dup(s->cert); 2634 if (ret->cert == NULL) 2635 goto err; 2636 } 2637 2638 SSL_set_session_id_context(ret, 2639 s->sid_ctx, s->sid_ctx_length); 2640 } 2641 2642 ret->options = s->options; 2643 ret->mode = s->mode; 2644 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2645 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2646 ret->msg_callback = s->msg_callback; 2647 ret->msg_callback_arg = s->msg_callback_arg; 2648 SSL_set_verify(ret, SSL_get_verify_mode(s), 2649 SSL_get_verify_callback(s)); 2650 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2651 ret->generate_session_id = s->generate_session_id; 2652 2653 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2654 2655 ret->debug = s->debug; 2656 2657 /* copy app data, a little dangerous perhaps */ 2658 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2659 &ret->ex_data, &s->ex_data)) 2660 goto err; 2661 2662 /* setup rbio, and wbio */ 2663 if (s->rbio != NULL) { 2664 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2665 goto err; 2666 } 2667 if (s->wbio != NULL) { 2668 if (s->wbio != s->rbio) { 2669 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2670 goto err; 2671 } else 2672 ret->wbio = ret->rbio; 2673 } 2674 ret->rwstate = s->rwstate; 2675 ret->in_handshake = s->in_handshake; 2676 ret->handshake_func = s->handshake_func; 2677 ret->server = s->server; 2678 ret->renegotiate = s->renegotiate; 2679 ret->new_session = s->new_session; 2680 ret->quiet_shutdown = s->quiet_shutdown; 2681 ret->shutdown = s->shutdown; 2682 /* SSL_dup does not really work at any state, though */ 2683 ret->state=s->state; 2684 ret->rstate = s->rstate; 2685 2686 /* 2687 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2688 * ret->init_off 2689 */ 2690 ret->init_num = 0; 2691 2692 ret->hit = s->hit; 2693 2694 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2695 2696 /* dup the cipher_list and cipher_list_by_id stacks */ 2697 if (s->cipher_list != NULL) { 2698 if ((ret->cipher_list = 2699 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2700 goto err; 2701 } 2702 if (s->cipher_list_by_id != NULL) { 2703 if ((ret->cipher_list_by_id = 2704 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2705 goto err; 2706 } 2707 2708 /* Dup the client_CA list */ 2709 if (s->client_CA != NULL) { 2710 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2711 ret->client_CA = sk; 2712 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2713 xn = sk_X509_NAME_value(sk, i); 2714 if (sk_X509_NAME_set(sk, i, 2715 X509_NAME_dup(xn)) == NULL) { 2716 X509_NAME_free(xn); 2717 goto err; 2718 } 2719 } 2720 } 2721 2722 if (0) { 2723err: 2724 if (ret != NULL) 2725 SSL_free(ret); 2726 ret = NULL; 2727 } 2728 return (ret); 2729} 2730 2731void 2732ssl_clear_cipher_ctx(SSL *s) 2733{ 2734 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2735 s->enc_read_ctx = NULL; 2736 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2737 s->enc_write_ctx = NULL; 2738 2739 if (s->aead_read_ctx != NULL) { 2740 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2741 free(s->aead_read_ctx); 2742 s->aead_read_ctx = NULL; 2743 } 2744 if (s->aead_write_ctx != NULL) { 2745 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2746 free(s->aead_write_ctx); 2747 s->aead_write_ctx = NULL; 2748 } 2749 2750} 2751 2752/* Fix this function so that it takes an optional type parameter */ 2753X509 * 2754SSL_get_certificate(const SSL *s) 2755{ 2756 if (s->cert != NULL) 2757 return (s->cert->key->x509); 2758 else 2759 return (NULL); 2760} 2761 2762/* Fix this function so that it takes an optional type parameter */ 2763EVP_PKEY * 2764SSL_get_privatekey(SSL *s) 2765{ 2766 if (s->cert != NULL) 2767 return (s->cert->key->privatekey); 2768 else 2769 return (NULL); 2770} 2771 2772const SSL_CIPHER * 2773SSL_get_current_cipher(const SSL *s) 2774{ 2775 if ((s->session != NULL) && (s->session->cipher != NULL)) 2776 return (s->session->cipher); 2777 return (NULL); 2778} 2779const void * 2780SSL_get_current_compression(SSL *s) 2781{ 2782 return (NULL); 2783} 2784 2785const void * 2786SSL_get_current_expansion(SSL *s) 2787{ 2788 return (NULL); 2789} 2790 2791int 2792ssl_init_wbio_buffer(SSL *s, int push) 2793{ 2794 BIO *bbio; 2795 2796 if (s->bbio == NULL) { 2797 bbio = BIO_new(BIO_f_buffer()); 2798 if (bbio == NULL) 2799 return (0); 2800 s->bbio = bbio; 2801 } else { 2802 bbio = s->bbio; 2803 if (s->bbio == s->wbio) 2804 s->wbio = BIO_pop(s->wbio); 2805 } 2806 (void)BIO_reset(bbio); 2807/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2808 if (!BIO_set_read_buffer_size(bbio, 1)) { 2809 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2810 return (0); 2811 } 2812 if (push) { 2813 if (s->wbio != bbio) 2814 s->wbio = BIO_push(bbio, s->wbio); 2815 } else { 2816 if (s->wbio == bbio) 2817 s->wbio = BIO_pop(bbio); 2818 } 2819 return (1); 2820} 2821 2822void 2823ssl_free_wbio_buffer(SSL *s) 2824{ 2825 if (s == NULL) 2826 return; 2827 2828 if (s->bbio == NULL) 2829 return; 2830 2831 if (s->bbio == s->wbio) { 2832 /* remove buffering */ 2833 s->wbio = BIO_pop(s->wbio); 2834 } 2835 BIO_free(s->bbio); 2836 s->bbio = NULL; 2837} 2838 2839void 2840SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2841{ 2842 ctx->quiet_shutdown = mode; 2843} 2844 2845int 2846SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2847{ 2848 return (ctx->quiet_shutdown); 2849} 2850 2851void 2852SSL_set_quiet_shutdown(SSL *s, int mode) 2853{ 2854 s->quiet_shutdown = mode; 2855} 2856 2857int 2858SSL_get_quiet_shutdown(const SSL *s) 2859{ 2860 return (s->quiet_shutdown); 2861} 2862 2863void 2864SSL_set_shutdown(SSL *s, int mode) 2865{ 2866 s->shutdown = mode; 2867} 2868 2869int 2870SSL_get_shutdown(const SSL *s) 2871{ 2872 return (s->shutdown); 2873} 2874 2875int 2876SSL_version(const SSL *s) 2877{ 2878 return (s->version); 2879} 2880 2881SSL_CTX * 2882SSL_get_SSL_CTX(const SSL *ssl) 2883{ 2884 return (ssl->ctx); 2885} 2886 2887SSL_CTX * 2888SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2889{ 2890 CERT *ocert = ssl->cert; 2891 2892 if (ssl->ctx == ctx) 2893 return (ssl->ctx); 2894 if (ctx == NULL) 2895 ctx = ssl->initial_ctx; 2896 ssl->cert = ssl_cert_dup(ctx->cert); 2897 if (ocert != NULL) { 2898 int i; 2899 /* Copy negotiated digests from original certificate. */ 2900 for (i = 0; i < SSL_PKEY_NUM; i++) 2901 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2902 ssl_cert_free(ocert); 2903 } 2904 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2905 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2906 ssl->ctx = ctx; 2907 return (ssl->ctx); 2908} 2909 2910int 2911SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2912{ 2913 return (X509_STORE_set_default_paths(ctx->cert_store)); 2914} 2915 2916int 2917SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2918 const char *CApath) 2919{ 2920 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2921} 2922 2923int 2924SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2925{ 2926 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2927} 2928 2929void 2930SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2931{ 2932 ssl->info_callback = cb; 2933} 2934 2935void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2936{ 2937 return (ssl->info_callback); 2938} 2939 2940int 2941SSL_state(const SSL *ssl) 2942{ 2943 return (ssl->state); 2944} 2945 2946void 2947SSL_set_state(SSL *ssl, int state) 2948{ 2949 ssl->state = state; 2950} 2951 2952void 2953SSL_set_verify_result(SSL *ssl, long arg) 2954{ 2955 ssl->verify_result = arg; 2956} 2957 2958long 2959SSL_get_verify_result(const SSL *ssl) 2960{ 2961 return (ssl->verify_result); 2962} 2963 2964int 2965SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2966 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2967{ 2968 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2969 new_func, dup_func, free_func)); 2970} 2971 2972int 2973SSL_set_ex_data(SSL *s, int idx, void *arg) 2974{ 2975 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2976} 2977 2978void * 2979SSL_get_ex_data(const SSL *s, int idx) 2980{ 2981 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2982} 2983 2984int 2985SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2986 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2987{ 2988 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2989 new_func, dup_func, free_func)); 2990} 2991 2992int 2993SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2994{ 2995 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2996} 2997 2998void * 2999SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3000{ 3001 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3002} 3003 3004int 3005ssl_ok(SSL *s) 3006{ 3007 return (1); 3008} 3009 3010X509_STORE * 3011SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3012{ 3013 return (ctx->cert_store); 3014} 3015 3016void 3017SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3018{ 3019 if (ctx->cert_store != NULL) 3020 X509_STORE_free(ctx->cert_store); 3021 ctx->cert_store = store; 3022} 3023 3024int 3025SSL_want(const SSL *s) 3026{ 3027 return (s->rwstate); 3028} 3029 3030void 3031SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3032 int keylength)) 3033{ 3034 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3035} 3036 3037void 3038SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3039 int keylength)) 3040{ 3041 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3042} 3043 3044void 3045SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3046 int keylength)) 3047{ 3048 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3049} 3050 3051void 3052SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3053 int keylength)) 3054{ 3055 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3056} 3057 3058void 3059SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3060 int is_export, int keylength)) 3061{ 3062 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3063 (void (*)(void))ecdh); 3064} 3065 3066void 3067SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3068 int keylength)) 3069{ 3070 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3071} 3072 3073 3074void 3075SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3076 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3077{ 3078 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3079 (void (*)(void))cb); 3080} 3081 3082void 3083SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3084 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3085{ 3086 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3087} 3088 3089void 3090ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3091{ 3092 if (*hash) 3093 EVP_MD_CTX_destroy(*hash); 3094 *hash = NULL; 3095} 3096 3097void 3098SSL_set_debug(SSL *s, int debug) 3099{ 3100 s->debug = debug; 3101} 3102 3103int 3104SSL_cache_hit(SSL *s) 3105{ 3106 return (s->hit); 3107} 3108 3109 3110static int 3111ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3112{ 3113 SSL_CIPHER const *a = a_; 3114 SSL_CIPHER const *b = b_; 3115 return ssl_cipher_id_cmp(a, b); 3116} 3117 3118SSL_CIPHER * 3119OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3120{ 3121 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3122 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3123} 3124