ssl_lib.c revision 1.112
1/* $OpenBSD: ssl_lib.c,v 1.112 2015/09/12 19:45:16 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); 361 362 363 return (s); 364err: 365 if (s != NULL) { 366 if (s->cert != NULL) 367 ssl_cert_free(s->cert); 368 SSL_CTX_free(s->ctx); /* decrement reference count */ 369 free(s); 370 } 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 if (s->rbio != NULL) 511 BIO_free_all(s->rbio); 512 if ((s->wbio != NULL) && (s->wbio != 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); 556 557 558 free(s->next_proto_negotiated); 559 free(s->alpn_client_proto_list); 560 561#ifndef OPENSSL_NO_SRTP 562 if (s->srtp_profiles) 563 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 564#endif 565 566 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 if ((s->rbio != NULL) && (s->rbio != rbio)) 580 BIO_free_all(s->rbio); 581 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 582 BIO_free_all(s->wbio); 583 s->rbio = rbio; 584 s->wbio = wbio; 585} 586 587BIO * 588SSL_get_rbio(const SSL *s) 589{ 590 return (s->rbio); 591} 592 593BIO * 594SSL_get_wbio(const SSL *s) 595{ 596 return (s->wbio); 597} 598 599int 600SSL_get_fd(const SSL *s) 601{ 602 return (SSL_get_rfd(s)); 603} 604 605int 606SSL_get_rfd(const SSL *s) 607{ 608 int ret = -1; 609 BIO *b, *r; 610 611 b = SSL_get_rbio(s); 612 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 613 if (r != NULL) 614 BIO_get_fd(r, &ret); 615 return (ret); 616} 617 618int 619SSL_get_wfd(const SSL *s) 620{ 621 int ret = -1; 622 BIO *b, *r; 623 624 b = SSL_get_wbio(s); 625 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 626 if (r != NULL) 627 BIO_get_fd(r, &ret); 628 return (ret); 629} 630 631int 632SSL_set_fd(SSL *s, int fd) 633{ 634 int ret = 0; 635 BIO *bio = NULL; 636 637 bio = BIO_new(BIO_s_socket()); 638 639 if (bio == NULL) { 640 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 641 goto err; 642 } 643 BIO_set_fd(bio, fd, BIO_NOCLOSE); 644 SSL_set_bio(s, bio, bio); 645 ret = 1; 646err: 647 return (ret); 648} 649 650int 651SSL_set_wfd(SSL *s, int fd) 652{ 653 int ret = 0; 654 BIO *bio = NULL; 655 656 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 657 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 658 bio = BIO_new(BIO_s_socket()); 659 660 if (bio == NULL) { 661 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 662 goto err; 663 } 664 BIO_set_fd(bio, fd, BIO_NOCLOSE); 665 SSL_set_bio(s, SSL_get_rbio(s), bio); 666 } else 667 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 668 ret = 1; 669err: 670 return (ret); 671} 672 673int 674SSL_set_rfd(SSL *s, int fd) 675{ 676 int ret = 0; 677 BIO *bio = NULL; 678 679 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 680 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 681 bio = BIO_new(BIO_s_socket()); 682 683 if (bio == NULL) { 684 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 685 goto err; 686 } 687 BIO_set_fd(bio, fd, BIO_NOCLOSE); 688 SSL_set_bio(s, bio, SSL_get_wbio(s)); 689 } else 690 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 691 ret = 1; 692err: 693 return (ret); 694} 695 696 697/* return length of latest Finished message we sent, copy to 'buf' */ 698size_t 699SSL_get_finished(const SSL *s, void *buf, size_t count) 700{ 701 size_t ret = 0; 702 703 if (s->s3 != NULL) { 704 ret = s->s3->tmp.finish_md_len; 705 if (count > ret) 706 count = ret; 707 memcpy(buf, s->s3->tmp.finish_md, count); 708 } 709 return (ret); 710} 711 712/* return length of latest Finished message we expected, copy to 'buf' */ 713size_t 714SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 715{ 716 size_t ret = 0; 717 718 if (s->s3 != NULL) { 719 ret = s->s3->tmp.peer_finish_md_len; 720 if (count > ret) 721 count = ret; 722 memcpy(buf, s->s3->tmp.peer_finish_md, count); 723 } 724 return (ret); 725} 726 727 728int 729SSL_get_verify_mode(const SSL *s) 730{ 731 return (s->verify_mode); 732} 733 734int 735SSL_get_verify_depth(const SSL *s) 736{ 737 return (X509_VERIFY_PARAM_get_depth(s->param)); 738} 739 740int 741(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 742{ 743 return (s->verify_callback); 744} 745 746int 747SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 748{ 749 return (ctx->verify_mode); 750} 751 752int 753SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 754{ 755 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 756} 757 758int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 759{ 760 return (ctx->default_verify_callback); 761} 762 763void 764SSL_set_verify(SSL *s, int mode, 765 int (*callback)(int ok, X509_STORE_CTX *ctx)) 766{ 767 s->verify_mode = mode; 768 if (callback != NULL) 769 s->verify_callback = callback; 770} 771 772void 773SSL_set_verify_depth(SSL *s, int depth) 774{ 775 X509_VERIFY_PARAM_set_depth(s->param, depth); 776} 777 778void 779SSL_set_read_ahead(SSL *s, int yes) 780{ 781 s->read_ahead = yes; 782} 783 784int 785SSL_get_read_ahead(const SSL *s) 786{ 787 return (s->read_ahead); 788} 789 790int 791SSL_pending(const SSL *s) 792{ 793 /* 794 * SSL_pending cannot work properly if read-ahead is enabled 795 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 796 * and it is impossible to fix since SSL_pending cannot report 797 * errors that may be observed while scanning the new data. 798 * (Note that SSL_pending() is often used as a boolean value, 799 * so we'd better not return -1.) 800 */ 801 return (s->method->ssl_pending(s)); 802} 803 804X509 * 805SSL_get_peer_certificate(const SSL *s) 806{ 807 X509 *r; 808 809 if ((s == NULL) || (s->session == NULL)) 810 r = NULL; 811 else 812 r = s->session->peer; 813 814 if (r == NULL) 815 return (r); 816 817 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 818 819 return (r); 820} 821 822STACK_OF(X509) * 823SSL_get_peer_cert_chain(const SSL *s) 824{ 825 STACK_OF(X509) *r; 826 827 if ((s == NULL) || (s->session == NULL) || 828 (s->session->sess_cert == NULL)) 829 r = NULL; 830 else 831 r = s->session->sess_cert->cert_chain; 832 833 /* 834 * If we are a client, cert_chain includes the peer's own 835 * certificate; 836 * if we are a server, it does not. 837 */ 838 return (r); 839} 840 841/* 842 * Now in theory, since the calling process own 't' it should be safe to 843 * modify. We need to be able to read f without being hassled 844 */ 845void 846SSL_copy_session_id(SSL *t, const SSL *f) 847{ 848 CERT *tmp; 849 850 /* Do we need to to SSL locking? */ 851 SSL_set_session(t, SSL_get_session(f)); 852 853 /* 854 * What if we are setup as SSLv2 but want to talk SSLv3 or 855 * vice-versa. 856 */ 857 if (t->method != f->method) { 858 t->method->ssl_free(t); /* cleanup current */ 859 t->method=f->method; /* change method */ 860 t->method->ssl_new(t); /* setup new */ 861 } 862 863 tmp = t->cert; 864 if (f->cert != NULL) { 865 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 866 t->cert = f->cert; 867 } else 868 t->cert = NULL; 869 if (tmp != NULL) 870 ssl_cert_free(tmp); 871 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 872} 873 874/* Fix this so it checks all the valid key/cert options */ 875int 876SSL_CTX_check_private_key(const SSL_CTX *ctx) 877{ 878 if ((ctx == NULL) || (ctx->cert == NULL) || 879 (ctx->cert->key->x509 == NULL)) { 880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 881 SSL_R_NO_CERTIFICATE_ASSIGNED); 882 return (0); 883 } 884 if (ctx->cert->key->privatekey == NULL) { 885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 886 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 887 return (0); 888 } 889 return (X509_check_private_key(ctx->cert->key->x509, 890 ctx->cert->key->privatekey)); 891} 892 893/* Fix this function so that it takes an optional type parameter */ 894int 895SSL_check_private_key(const SSL *ssl) 896{ 897 if (ssl == NULL) { 898 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 899 ERR_R_PASSED_NULL_PARAMETER); 900 return (0); 901 } 902 if (ssl->cert == NULL) { 903 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 904 SSL_R_NO_CERTIFICATE_ASSIGNED); 905 return (0); 906 } 907 if (ssl->cert->key->x509 == NULL) { 908 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 909 SSL_R_NO_CERTIFICATE_ASSIGNED); 910 return (0); 911 } 912 if (ssl->cert->key->privatekey == NULL) { 913 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 914 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 915 return (0); 916 } 917 return (X509_check_private_key(ssl->cert->key->x509, 918 ssl->cert->key->privatekey)); 919} 920 921int 922SSL_accept(SSL *s) 923{ 924 if (s->handshake_func == NULL) 925 SSL_set_accept_state(s); /* Not properly initialized yet */ 926 927 return (s->method->ssl_accept(s)); 928} 929 930int 931SSL_connect(SSL *s) 932{ 933 if (s->handshake_func == NULL) 934 SSL_set_connect_state(s); /* Not properly initialized yet */ 935 936 return (s->method->ssl_connect(s)); 937} 938 939long 940SSL_get_default_timeout(const SSL *s) 941{ 942 return (s->method->get_timeout()); 943} 944 945int 946SSL_read(SSL *s, void *buf, int num) 947{ 948 if (s->handshake_func == NULL) { 949 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 950 return (-1); 951 } 952 953 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 954 s->rwstate = SSL_NOTHING; 955 return (0); 956 } 957 return (s->method->ssl_read(s, buf, num)); 958} 959 960int 961SSL_peek(SSL *s, void *buf, int num) 962{ 963 if (s->handshake_func == NULL) { 964 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 965 return (-1); 966 } 967 968 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 969 return (0); 970 } 971 return (s->method->ssl_peek(s, buf, num)); 972} 973 974int 975SSL_write(SSL *s, const void *buf, int num) 976{ 977 if (s->handshake_func == NULL) { 978 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 979 return (-1); 980 } 981 982 if (s->shutdown & SSL_SENT_SHUTDOWN) { 983 s->rwstate = SSL_NOTHING; 984 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 985 return (-1); 986 } 987 return (s->method->ssl_write(s, buf, num)); 988} 989 990int 991SSL_shutdown(SSL *s) 992{ 993 /* 994 * Note that this function behaves differently from what one might 995 * expect. Return values are 0 for no success (yet), 996 * 1 for success; but calling it once is usually not enough, 997 * even if blocking I/O is used (see ssl3_shutdown). 998 */ 999 1000 if (s->handshake_func == NULL) { 1001 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1002 return (-1); 1003 } 1004 1005 if ((s != NULL) && !SSL_in_init(s)) 1006 return (s->method->ssl_shutdown(s)); 1007 else 1008 return (1); 1009} 1010 1011int 1012SSL_renegotiate(SSL *s) 1013{ 1014 if (s->renegotiate == 0) 1015 s->renegotiate = 1; 1016 1017 s->new_session = 1; 1018 1019 return (s->method->ssl_renegotiate(s)); 1020} 1021 1022int 1023SSL_renegotiate_abbreviated(SSL *s) 1024{ 1025 if (s->renegotiate == 0) 1026 s->renegotiate = 1; 1027 1028 s->new_session = 0; 1029 1030 return (s->method->ssl_renegotiate(s)); 1031} 1032 1033int 1034SSL_renegotiate_pending(SSL *s) 1035{ 1036 /* 1037 * Becomes true when negotiation is requested; 1038 * false again once a handshake has finished. 1039 */ 1040 return (s->renegotiate != 0); 1041} 1042 1043long 1044SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1045{ 1046 long l; 1047 1048 switch (cmd) { 1049 case SSL_CTRL_GET_READ_AHEAD: 1050 return (s->read_ahead); 1051 case SSL_CTRL_SET_READ_AHEAD: 1052 l = s->read_ahead; 1053 s->read_ahead = larg; 1054 return (l); 1055 1056 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1057 s->msg_callback_arg = parg; 1058 return (1); 1059 1060 case SSL_CTRL_OPTIONS: 1061 return (s->options|=larg); 1062 case SSL_CTRL_CLEAR_OPTIONS: 1063 return (s->options&=~larg); 1064 case SSL_CTRL_MODE: 1065 return (s->mode|=larg); 1066 case SSL_CTRL_CLEAR_MODE: 1067 return (s->mode &=~larg); 1068 case SSL_CTRL_GET_MAX_CERT_LIST: 1069 return (s->max_cert_list); 1070 case SSL_CTRL_SET_MAX_CERT_LIST: 1071 l = s->max_cert_list; 1072 s->max_cert_list = larg; 1073 return (l); 1074 case SSL_CTRL_SET_MTU: 1075#ifndef OPENSSL_NO_DTLS1 1076 if (larg < (long)dtls1_min_mtu()) 1077 return (0); 1078#endif 1079 if (SSL_IS_DTLS(s)) { 1080 s->d1->mtu = larg; 1081 return (larg); 1082 } 1083 return (0); 1084 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1085 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1086 return (0); 1087 s->max_send_fragment = larg; 1088 return (1); 1089 case SSL_CTRL_GET_RI_SUPPORT: 1090 if (s->s3) 1091 return (s->s3->send_connection_binding); 1092 else return (0); 1093 default: 1094 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1095 } 1096} 1097 1098long 1099SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1100{ 1101 switch (cmd) { 1102 case SSL_CTRL_SET_MSG_CALLBACK: 1103 s->msg_callback = (void (*)(int write_p, int version, 1104 int content_type, const void *buf, size_t len, 1105 SSL *ssl, void *arg))(fp); 1106 return (1); 1107 1108 default: 1109 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1110 } 1111} 1112 1113LHASH_OF(SSL_SESSION) * 1114SSL_CTX_sessions(SSL_CTX *ctx) 1115{ 1116 return (ctx->sessions); 1117} 1118 1119long 1120SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1121{ 1122 long l; 1123 1124 switch (cmd) { 1125 case SSL_CTRL_GET_READ_AHEAD: 1126 return (ctx->read_ahead); 1127 case SSL_CTRL_SET_READ_AHEAD: 1128 l = ctx->read_ahead; 1129 ctx->read_ahead = larg; 1130 return (l); 1131 1132 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1133 ctx->msg_callback_arg = parg; 1134 return (1); 1135 1136 case SSL_CTRL_GET_MAX_CERT_LIST: 1137 return (ctx->max_cert_list); 1138 case SSL_CTRL_SET_MAX_CERT_LIST: 1139 l = ctx->max_cert_list; 1140 ctx->max_cert_list = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1144 l = ctx->session_cache_size; 1145 ctx->session_cache_size = larg; 1146 return (l); 1147 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1148 return (ctx->session_cache_size); 1149 case SSL_CTRL_SET_SESS_CACHE_MODE: 1150 l = ctx->session_cache_mode; 1151 ctx->session_cache_mode = larg; 1152 return (l); 1153 case SSL_CTRL_GET_SESS_CACHE_MODE: 1154 return (ctx->session_cache_mode); 1155 1156 case SSL_CTRL_SESS_NUMBER: 1157 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1158 case SSL_CTRL_SESS_CONNECT: 1159 return (ctx->stats.sess_connect); 1160 case SSL_CTRL_SESS_CONNECT_GOOD: 1161 return (ctx->stats.sess_connect_good); 1162 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1163 return (ctx->stats.sess_connect_renegotiate); 1164 case SSL_CTRL_SESS_ACCEPT: 1165 return (ctx->stats.sess_accept); 1166 case SSL_CTRL_SESS_ACCEPT_GOOD: 1167 return (ctx->stats.sess_accept_good); 1168 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1169 return (ctx->stats.sess_accept_renegotiate); 1170 case SSL_CTRL_SESS_HIT: 1171 return (ctx->stats.sess_hit); 1172 case SSL_CTRL_SESS_CB_HIT: 1173 return (ctx->stats.sess_cb_hit); 1174 case SSL_CTRL_SESS_MISSES: 1175 return (ctx->stats.sess_miss); 1176 case SSL_CTRL_SESS_TIMEOUTS: 1177 return (ctx->stats.sess_timeout); 1178 case SSL_CTRL_SESS_CACHE_FULL: 1179 return (ctx->stats.sess_cache_full); 1180 case SSL_CTRL_OPTIONS: 1181 return (ctx->options|=larg); 1182 case SSL_CTRL_CLEAR_OPTIONS: 1183 return (ctx->options&=~larg); 1184 case SSL_CTRL_MODE: 1185 return (ctx->mode|=larg); 1186 case SSL_CTRL_CLEAR_MODE: 1187 return (ctx->mode&=~larg); 1188 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1189 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1190 return (0); 1191 ctx->max_send_fragment = larg; 1192 return (1); 1193 default: 1194 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1195 } 1196} 1197 1198long 1199SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1200{ 1201 switch (cmd) { 1202 case SSL_CTRL_SET_MSG_CALLBACK: 1203 ctx->msg_callback = (void (*)(int write_p, int version, 1204 int content_type, const void *buf, size_t len, SSL *ssl, 1205 void *arg))(fp); 1206 return (1); 1207 1208 default: 1209 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1210 } 1211} 1212 1213int 1214ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1215{ 1216 long l; 1217 1218 l = a->id - b->id; 1219 if (l == 0L) 1220 return (0); 1221 else 1222 return ((l > 0) ? 1:-1); 1223} 1224 1225int 1226ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1227 const SSL_CIPHER * const *bp) 1228{ 1229 long l; 1230 1231 l = (*ap)->id - (*bp)->id; 1232 if (l == 0L) 1233 return (0); 1234 else 1235 return ((l > 0) ? 1:-1); 1236} 1237 1238/* 1239 * Return a STACK of the ciphers available for the SSL and in order of 1240 * preference. 1241 */ 1242STACK_OF(SSL_CIPHER) * 1243SSL_get_ciphers(const SSL *s) 1244{ 1245 if (s != NULL) { 1246 if (s->cipher_list != NULL) { 1247 return (s->cipher_list); 1248 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1249 return (s->ctx->cipher_list); 1250 } 1251 } 1252 return (NULL); 1253} 1254 1255/* 1256 * Return a STACK of the ciphers available for the SSL and in order of 1257 * algorithm id. 1258 */ 1259STACK_OF(SSL_CIPHER) * 1260ssl_get_ciphers_by_id(SSL *s) 1261{ 1262 if (s != NULL) { 1263 if (s->cipher_list_by_id != NULL) { 1264 return (s->cipher_list_by_id); 1265 } else if ((s->ctx != NULL) && 1266 (s->ctx->cipher_list_by_id != NULL)) { 1267 return (s->ctx->cipher_list_by_id); 1268 } 1269 } 1270 return (NULL); 1271} 1272 1273/* The old interface to get the same thing as SSL_get_ciphers(). */ 1274const char * 1275SSL_get_cipher_list(const SSL *s, int n) 1276{ 1277 SSL_CIPHER *c; 1278 STACK_OF(SSL_CIPHER) *sk; 1279 1280 if (s == NULL) 1281 return (NULL); 1282 sk = SSL_get_ciphers(s); 1283 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1284 return (NULL); 1285 c = sk_SSL_CIPHER_value(sk, n); 1286 if (c == NULL) 1287 return (NULL); 1288 return (c->name); 1289} 1290 1291/* Specify the ciphers to be used by default by the SSL_CTX. */ 1292int 1293SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1294{ 1295 STACK_OF(SSL_CIPHER) *sk; 1296 1297 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1298 &ctx->cipher_list_by_id, str); 1299 /* 1300 * ssl_create_cipher_list may return an empty stack if it 1301 * was unable to find a cipher matching the given rule string 1302 * (for example if the rule string specifies a cipher which 1303 * has been disabled). This is not an error as far as 1304 * ssl_create_cipher_list is concerned, and hence 1305 * ctx->cipher_list and ctx->cipher_list_by_id has been 1306 * updated. 1307 */ 1308 if (sk == NULL) 1309 return (0); 1310 else if (sk_SSL_CIPHER_num(sk) == 0) { 1311 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1312 return (0); 1313 } 1314 return (1); 1315} 1316 1317/* Specify the ciphers to be used by the SSL. */ 1318int 1319SSL_set_cipher_list(SSL *s, const char *str) 1320{ 1321 STACK_OF(SSL_CIPHER) *sk; 1322 1323 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1324 &s->cipher_list_by_id, str); 1325 /* see comment in SSL_CTX_set_cipher_list */ 1326 if (sk == NULL) 1327 return (0); 1328 else if (sk_SSL_CIPHER_num(sk) == 0) { 1329 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1330 return (0); 1331 } 1332 return (1); 1333} 1334 1335/* works well for SSLv2, not so good for SSLv3 */ 1336char * 1337SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1338{ 1339 char *end; 1340 STACK_OF(SSL_CIPHER) *sk; 1341 SSL_CIPHER *c; 1342 size_t curlen = 0; 1343 int i; 1344 1345 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1346 return (NULL); 1347 1348 sk = s->session->ciphers; 1349 if (sk_SSL_CIPHER_num(sk) == 0) 1350 return (NULL); 1351 1352 buf[0] = '\0'; 1353 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1354 c = sk_SSL_CIPHER_value(sk, i); 1355 end = buf + curlen; 1356 if (strlcat(buf, c->name, len) >= len || 1357 (curlen = strlcat(buf, ":", len)) >= len) { 1358 /* remove truncated cipher from list */ 1359 *end = '\0'; 1360 break; 1361 } 1362 } 1363 /* remove trailing colon */ 1364 if ((end = strrchr(buf, ':')) != NULL) 1365 *end = '\0'; 1366 return (buf); 1367} 1368 1369int 1370ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1371{ 1372 int i; 1373 SSL_CIPHER *c; 1374 unsigned char *q; 1375 1376 if (sk == NULL) 1377 return (0); 1378 q = p; 1379 1380 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1381 c = sk_SSL_CIPHER_value(sk, i); 1382 1383 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1384 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1385 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1386 continue; 1387 1388 s2n(ssl3_cipher_get_value(c), p); 1389 } 1390 1391 /* 1392 * If p == q, no ciphers and caller indicates an error. Otherwise 1393 * add SCSV if not renegotiating. 1394 */ 1395 if (p != q && !s->renegotiate) 1396 s2n(SSL3_CK_SCSV & SSL3_CK_VALUE_MASK, p); 1397 1398 return (p - q); 1399} 1400 1401STACK_OF(SSL_CIPHER) * 1402ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1403{ 1404 CBS cbs; 1405 const SSL_CIPHER *c; 1406 STACK_OF(SSL_CIPHER) *sk = NULL; 1407 unsigned long cipher_id; 1408 uint16_t cipher_value, max_version; 1409 1410 if (s->s3) 1411 s->s3->send_connection_binding = 0; 1412 1413 /* 1414 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1415 */ 1416 if (num < 2 || num > 0x10000 - 2) { 1417 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1418 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1419 return (NULL); 1420 } 1421 1422 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1423 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1424 goto err; 1425 } 1426 1427 CBS_init(&cbs, p, num); 1428 while (CBS_len(&cbs) > 0) { 1429 if (!CBS_get_u16(&cbs, &cipher_value)) { 1430 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1431 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1432 goto err; 1433 } 1434 1435 cipher_id = SSL3_CK_ID | cipher_value; 1436 1437 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1438 /* 1439 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1440 * renegotiating. 1441 */ 1442 if (s->renegotiate) { 1443 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1444 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1445 ssl3_send_alert(s, SSL3_AL_FATAL, 1446 SSL_AD_HANDSHAKE_FAILURE); 1447 1448 goto err; 1449 } 1450 s->s3->send_connection_binding = 1; 1451 continue; 1452 } 1453 1454 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1455 /* 1456 * TLS_FALLBACK_SCSV indicates that the client 1457 * previously tried a higher protocol version. 1458 * Fail if the current version is an unexpected 1459 * downgrade. 1460 */ 1461 max_version = ssl_max_server_version(s); 1462 if (max_version == 0 || s->version < max_version) { 1463 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1464 SSL_R_INAPPROPRIATE_FALLBACK); 1465 if (s->s3 != NULL) 1466 ssl3_send_alert(s, SSL3_AL_FATAL, 1467 SSL_AD_INAPPROPRIATE_FALLBACK); 1468 goto err; 1469 } 1470 continue; 1471 } 1472 1473 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1474 if (!sk_SSL_CIPHER_push(sk, c)) { 1475 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1476 ERR_R_MALLOC_FAILURE); 1477 goto err; 1478 } 1479 } 1480 } 1481 1482 return (sk); 1483 1484err: 1485 sk_SSL_CIPHER_free(sk); 1486 1487 return (NULL); 1488} 1489 1490 1491/* 1492 * Return a servername extension value if provided in Client Hello, or NULL. 1493 * So far, only host_name types are defined (RFC 3546). 1494 */ 1495const char * 1496SSL_get_servername(const SSL *s, const int type) 1497{ 1498 if (type != TLSEXT_NAMETYPE_host_name) 1499 return (NULL); 1500 1501 return (s->session && !s->tlsext_hostname ? 1502 s->session->tlsext_hostname : 1503 s->tlsext_hostname); 1504} 1505 1506int 1507SSL_get_servername_type(const SSL *s) 1508{ 1509 if (s->session && 1510 (!s->tlsext_hostname ? 1511 s->session->tlsext_hostname : s->tlsext_hostname)) 1512 return (TLSEXT_NAMETYPE_host_name); 1513 return (-1); 1514} 1515 1516/* 1517 * SSL_select_next_proto implements the standard protocol selection. It is 1518 * expected that this function is called from the callback set by 1519 * SSL_CTX_set_next_proto_select_cb. 1520 * 1521 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1522 * strings. The length byte itself is not included in the length. A byte 1523 * string of length 0 is invalid. No byte string may be truncated. 1524 * 1525 * The current, but experimental algorithm for selecting the protocol is: 1526 * 1527 * 1) If the server doesn't support NPN then this is indicated to the 1528 * callback. In this case, the client application has to abort the connection 1529 * or have a default application level protocol. 1530 * 1531 * 2) If the server supports NPN, but advertises an empty list then the 1532 * client selects the first protcol in its list, but indicates via the 1533 * API that this fallback case was enacted. 1534 * 1535 * 3) Otherwise, the client finds the first protocol in the server's list 1536 * that it supports and selects this protocol. This is because it's 1537 * assumed that the server has better information about which protocol 1538 * a client should use. 1539 * 1540 * 4) If the client doesn't support any of the server's advertised 1541 * protocols, then this is treated the same as case 2. 1542 * 1543 * It returns either 1544 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1545 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1546 */ 1547int 1548SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1549 const unsigned char *server, unsigned int server_len, 1550 const unsigned char *client, unsigned int client_len) 1551{ 1552 unsigned int i, j; 1553 const unsigned char *result; 1554 int status = OPENSSL_NPN_UNSUPPORTED; 1555 1556 /* 1557 * For each protocol in server preference order, 1558 * see if we support it. 1559 */ 1560 for (i = 0; i < server_len; ) { 1561 for (j = 0; j < client_len; ) { 1562 if (server[i] == client[j] && 1563 memcmp(&server[i + 1], 1564 &client[j + 1], server[i]) == 0) { 1565 /* We found a match */ 1566 result = &server[i]; 1567 status = OPENSSL_NPN_NEGOTIATED; 1568 goto found; 1569 } 1570 j += client[j]; 1571 j++; 1572 } 1573 i += server[i]; 1574 i++; 1575 } 1576 1577 /* There's no overlap between our protocols and the server's list. */ 1578 result = client; 1579 status = OPENSSL_NPN_NO_OVERLAP; 1580 1581found: 1582 *out = (unsigned char *) result + 1; 1583 *outlen = result[0]; 1584 return (status); 1585} 1586 1587/* 1588 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1589 * requested protocol for this connection and returns 0. If the client didn't 1590 * request any protocol, then *data is set to NULL. 1591 * 1592 * Note that the client can request any protocol it chooses. The value returned 1593 * from this function need not be a member of the list of supported protocols 1594 * provided by the callback. 1595 */ 1596void 1597SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1598 unsigned *len) 1599{ 1600 *data = s->next_proto_negotiated; 1601 if (!*data) { 1602 *len = 0; 1603 } else { 1604 *len = s->next_proto_negotiated_len; 1605 } 1606} 1607 1608/* 1609 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1610 * TLS server needs a list of supported protocols for Next Protocol 1611 * Negotiation. The returned list must be in wire format. The list is returned 1612 * by setting |out| to point to it and |outlen| to its length. This memory will 1613 * not be modified, but one should assume that the SSL* keeps a reference to 1614 * it. 1615 * 1616 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1617 * Otherwise, no such extension will be included in the ServerHello. 1618 */ 1619void 1620SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1621 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1622{ 1623 ctx->next_protos_advertised_cb = cb; 1624 ctx->next_protos_advertised_cb_arg = arg; 1625} 1626 1627/* 1628 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1629 * client needs to select a protocol from the server's provided list. |out| 1630 * must be set to point to the selected protocol (which may be within |in|). 1631 * The length of the protocol name must be written into |outlen|. The server's 1632 * advertised protocols are provided in |in| and |inlen|. The callback can 1633 * assume that |in| is syntactically valid. 1634 * 1635 * The client must select a protocol. It is fatal to the connection if this 1636 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1637 */ 1638void 1639SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1640 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1641 unsigned int inlen, void *arg), void *arg) 1642{ 1643 ctx->next_proto_select_cb = cb; 1644 ctx->next_proto_select_cb_arg = arg; 1645} 1646 1647/* 1648 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1649 * protocols, which must be in wire-format (i.e. a series of non-empty, 1650 * 8-bit length-prefixed strings). Returns 0 on success. 1651 */ 1652int 1653SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1654 unsigned int protos_len) 1655{ 1656 free(ctx->alpn_client_proto_list); 1657 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1658 return (1); 1659 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1660 ctx->alpn_client_proto_list_len = protos_len; 1661 1662 return (0); 1663} 1664 1665/* 1666 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1667 * protocols, which must be in wire-format (i.e. a series of non-empty, 1668 * 8-bit length-prefixed strings). Returns 0 on success. 1669 */ 1670int 1671SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1672 unsigned int protos_len) 1673{ 1674 free(ssl->alpn_client_proto_list); 1675 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1676 return (1); 1677 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1678 ssl->alpn_client_proto_list_len = protos_len; 1679 1680 return (0); 1681} 1682 1683/* 1684 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1685 * ClientHello processing in order to select an ALPN protocol from the 1686 * client's list of offered protocols. 1687 */ 1688void 1689SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1690 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1691 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1692{ 1693 ctx->alpn_select_cb = cb; 1694 ctx->alpn_select_cb_arg = arg; 1695} 1696 1697/* 1698 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1699 * it sets data to point to len bytes of protocol name (not including the 1700 * leading length-prefix byte). If the server didn't respond with* a negotiated 1701 * protocol then len will be zero. 1702 */ 1703void 1704SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1705 unsigned *len) 1706{ 1707 *data = NULL; 1708 *len = 0; 1709 1710 if (ssl->s3 != NULL) { 1711 *data = ssl->s3->alpn_selected; 1712 *len = ssl->s3->alpn_selected_len; 1713 } 1714} 1715 1716int 1717SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1718 const char *label, size_t llen, const unsigned char *p, size_t plen, 1719 int use_context) 1720{ 1721 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1722 label, llen, p, plen, use_context)); 1723} 1724 1725static unsigned long 1726ssl_session_hash(const SSL_SESSION *a) 1727{ 1728 unsigned long l; 1729 1730 l = (unsigned long) 1731 ((unsigned int) a->session_id[0] )| 1732 ((unsigned int) a->session_id[1]<< 8L)| 1733 ((unsigned long)a->session_id[2]<<16L)| 1734 ((unsigned long)a->session_id[3]<<24L); 1735 return (l); 1736} 1737 1738/* 1739 * NB: If this function (or indeed the hash function which uses a sort of 1740 * coarser function than this one) is changed, ensure 1741 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1742 * able to construct an SSL_SESSION that will collide with any existing session 1743 * with a matching session ID. 1744 */ 1745static int 1746ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1747{ 1748 if (a->ssl_version != b->ssl_version) 1749 return (1); 1750 if (a->session_id_length != b->session_id_length) 1751 return (1); 1752 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1753 return (1); 1754 return (0); 1755} 1756 1757/* 1758 * These wrapper functions should remain rather than redeclaring 1759 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1760 * variable. The reason is that the functions aren't static, they're exposed via 1761 * ssl.h. 1762 */ 1763static 1764IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1765static 1766IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1767 1768SSL_CTX * 1769SSL_CTX_new(const SSL_METHOD *meth) 1770{ 1771 SSL_CTX *ret = NULL; 1772 1773 if (meth == NULL) { 1774 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1775 return (NULL); 1776 } 1777 1778 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1779 SSLerr(SSL_F_SSL_CTX_NEW, 1780 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1781 goto err; 1782 } 1783 ret = calloc(1, sizeof(SSL_CTX)); 1784 if (ret == NULL) 1785 goto err; 1786 1787 ret->method = meth; 1788 1789 ret->cert_store = NULL; 1790 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1791 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1792 ret->session_cache_head = NULL; 1793 ret->session_cache_tail = NULL; 1794 1795 /* We take the system default */ 1796 ret->session_timeout = meth->get_timeout(); 1797 1798 ret->new_session_cb = 0; 1799 ret->remove_session_cb = 0; 1800 ret->get_session_cb = 0; 1801 ret->generate_session_id = 0; 1802 1803 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1804 1805 ret->references = 1; 1806 ret->quiet_shutdown = 0; 1807 1808 ret->info_callback = NULL; 1809 1810 ret->app_verify_callback = 0; 1811 ret->app_verify_arg = NULL; 1812 1813 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1814 ret->read_ahead = 0; 1815 ret->msg_callback = 0; 1816 ret->msg_callback_arg = NULL; 1817 ret->verify_mode = SSL_VERIFY_NONE; 1818 ret->sid_ctx_length = 0; 1819 ret->default_verify_callback = NULL; 1820 if ((ret->cert = ssl_cert_new()) == NULL) 1821 goto err; 1822 1823 ret->default_passwd_callback = 0; 1824 ret->default_passwd_callback_userdata = NULL; 1825 ret->client_cert_cb = 0; 1826 ret->app_gen_cookie_cb = 0; 1827 ret->app_verify_cookie_cb = 0; 1828 1829 ret->sessions = lh_SSL_SESSION_new(); 1830 if (ret->sessions == NULL) 1831 goto err; 1832 ret->cert_store = X509_STORE_new(); 1833 if (ret->cert_store == NULL) 1834 goto err; 1835 1836 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1837 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1838 if (ret->cipher_list == NULL || 1839 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1840 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1841 goto err2; 1842 } 1843 1844 ret->param = X509_VERIFY_PARAM_new(); 1845 if (!ret->param) 1846 goto err; 1847 1848 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1849 SSLerr(SSL_F_SSL_CTX_NEW, 1850 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1851 goto err2; 1852 } 1853 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1854 SSLerr(SSL_F_SSL_CTX_NEW, 1855 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1856 goto err2; 1857 } 1858 1859 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1860 goto err; 1861 1862 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1863 1864 ret->extra_certs = NULL; 1865 1866 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1867 1868 ret->tlsext_servername_callback = 0; 1869 ret->tlsext_servername_arg = NULL; 1870 1871 /* Setup RFC4507 ticket keys */ 1872 arc4random_buf(ret->tlsext_tick_key_name, 16); 1873 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1874 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1875 1876 ret->tlsext_status_cb = 0; 1877 ret->tlsext_status_arg = NULL; 1878 1879 ret->next_protos_advertised_cb = 0; 1880 ret->next_proto_select_cb = 0; 1881#ifndef OPENSSL_NO_ENGINE 1882 ret->client_cert_engine = NULL; 1883#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1884#define eng_strx(x) #x 1885#define eng_str(x) eng_strx(x) 1886 /* Use specific client engine automatically... ignore errors */ 1887 { 1888 ENGINE *eng; 1889 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1890 if (!eng) { 1891 ERR_clear_error(); 1892 ENGINE_load_builtin_engines(); 1893 eng = ENGINE_by_id(eng_str( 1894 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1895 } 1896 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1897 ERR_clear_error(); 1898 } 1899#endif 1900#endif 1901 /* 1902 * Default is to connect to non-RI servers. When RI is more widely 1903 * deployed might change this. 1904 */ 1905 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1906 1907 /* Disable SSLv3 by default. */ 1908 ret->options |= SSL_OP_NO_SSLv3; 1909 1910 return (ret); 1911err: 1912 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1913err2: 1914 SSL_CTX_free(ret); 1915 return (NULL); 1916} 1917 1918void 1919SSL_CTX_free(SSL_CTX *a) 1920{ 1921 int i; 1922 1923 if (a == NULL) 1924 return; 1925 1926 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1927 if (i > 0) 1928 return; 1929 1930 if (a->param) 1931 X509_VERIFY_PARAM_free(a->param); 1932 1933 /* 1934 * Free internal session cache. However: the remove_cb() may reference 1935 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1936 * after the sessions were flushed. 1937 * As the ex_data handling routines might also touch the session cache, 1938 * the most secure solution seems to be: empty (flush) the cache, then 1939 * free ex_data, then finally free the cache. 1940 * (See ticket [openssl.org #212].) 1941 */ 1942 if (a->sessions != NULL) 1943 SSL_CTX_flush_sessions(a, 0); 1944 1945 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1946 1947 if (a->sessions != NULL) 1948 lh_SSL_SESSION_free(a->sessions); 1949 1950 if (a->cert_store != NULL) 1951 X509_STORE_free(a->cert_store); 1952 if (a->cipher_list != NULL) 1953 sk_SSL_CIPHER_free(a->cipher_list); 1954 if (a->cipher_list_by_id != NULL) 1955 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1956 if (a->cert != NULL) 1957 ssl_cert_free(a->cert); 1958 if (a->client_CA != NULL) 1959 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1960 if (a->extra_certs != NULL) 1961 sk_X509_pop_free(a->extra_certs, X509_free); 1962 1963#ifndef OPENSSL_NO_SRTP 1964 if (a->srtp_profiles) 1965 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1966#endif 1967 1968#ifndef OPENSSL_NO_ENGINE 1969 if (a->client_cert_engine) 1970 ENGINE_finish(a->client_cert_engine); 1971#endif 1972 1973 free(a->alpn_client_proto_list); 1974 1975 free(a); 1976} 1977 1978void 1979SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1980{ 1981 ctx->default_passwd_callback = cb; 1982} 1983 1984void 1985SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1986{ 1987 ctx->default_passwd_callback_userdata = u; 1988} 1989 1990void 1991SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1992 void *), void *arg) 1993{ 1994 ctx->app_verify_callback = cb; 1995 ctx->app_verify_arg = arg; 1996} 1997 1998void 1999SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2000{ 2001 ctx->verify_mode = mode; 2002 ctx->default_verify_callback = cb; 2003} 2004 2005void 2006SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2007{ 2008 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2009} 2010 2011void 2012ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2013{ 2014 CERT_PKEY *cpk; 2015 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2016 unsigned long mask_k, mask_a; 2017 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2018 int have_ecdh_tmp; 2019 X509 *x = NULL; 2020 EVP_PKEY *ecc_pkey = NULL; 2021 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2022 2023 if (c == NULL) 2024 return; 2025 2026 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2027 c->dh_tmp_auto != 0); 2028 2029 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2030 c->ecdh_tmp_auto != 0); 2031 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2032 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2033 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2034 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2035 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2036 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2037/* FIX THIS EAY EAY EAY */ 2038 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2039 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2040 mask_k = 0; 2041 mask_a = 0; 2042 2043 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2044 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2045 mask_k |= SSL_kGOST; 2046 mask_a |= SSL_aGOST01; 2047 } 2048 2049 if (rsa_enc) 2050 mask_k|=SSL_kRSA; 2051 2052 if (dh_tmp) 2053 mask_k|=SSL_kDHE; 2054 2055 if (rsa_enc || rsa_sign) 2056 mask_a|=SSL_aRSA; 2057 2058 if (dsa_sign) 2059 mask_a|=SSL_aDSS; 2060 2061 mask_a|=SSL_aNULL; 2062 2063 /* 2064 * An ECC certificate may be usable for ECDH and/or 2065 * ECDSA cipher suites depending on the key usage extension. 2066 */ 2067 if (have_ecc_cert) { 2068 /* This call populates extension flags (ex_flags) */ 2069 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2070 X509_check_purpose(x, -1, 0); 2071 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2072 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2073 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2074 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2075 ecc_pkey = X509_get_pubkey(x); 2076 EVP_PKEY_free(ecc_pkey); 2077 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2078 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2079 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2080 } 2081 if (ecdh_ok) { 2082 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2083 mask_k|=SSL_kECDHr; 2084 mask_a|=SSL_aECDH; 2085 } 2086 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2087 mask_k|=SSL_kECDHe; 2088 mask_a|=SSL_aECDH; 2089 } 2090 } 2091 if (ecdsa_ok) 2092 mask_a|=SSL_aECDSA; 2093 } 2094 2095 if (have_ecdh_tmp) { 2096 mask_k|=SSL_kECDHE; 2097 } 2098 2099 2100 c->mask_k = mask_k; 2101 c->mask_a = mask_a; 2102 c->valid = 1; 2103} 2104 2105/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2106#define ku_reject(x, usage) \ 2107 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2108 2109 2110int 2111ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2112{ 2113 unsigned long alg_k, alg_a; 2114 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2115 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2116 2117 alg_k = cs->algorithm_mkey; 2118 alg_a = cs->algorithm_auth; 2119 2120 /* This call populates the ex_flags field correctly */ 2121 X509_check_purpose(x, -1, 0); 2122 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2123 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2124 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2125 } 2126 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2127 /* key usage, if present, must allow key agreement */ 2128 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2129 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2130 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2131 return (0); 2132 } 2133 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2134 TLS1_2_VERSION) { 2135 /* signature alg must be ECDSA */ 2136 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2137 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2138 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2139 return (0); 2140 } 2141 } 2142 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2143 TLS1_2_VERSION) { 2144 /* signature alg must be RSA */ 2145 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2146 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2147 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2148 return (0); 2149 } 2150 } 2151 } 2152 if (alg_a & SSL_aECDSA) { 2153 /* key usage, if present, must allow signing */ 2154 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2155 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2156 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2157 return (0); 2158 } 2159 } 2160 2161 return (1); 2162 /* all checks are ok */ 2163} 2164 2165 2166/* THIS NEEDS CLEANING UP */ 2167CERT_PKEY * 2168ssl_get_server_send_pkey(const SSL *s) 2169{ 2170 unsigned long alg_k, alg_a; 2171 CERT *c; 2172 int i; 2173 2174 c = s->cert; 2175 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2176 2177 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2178 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2179 2180 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2181 /* 2182 * We don't need to look at SSL_kECDHE 2183 * since no certificate is needed for 2184 * anon ECDH and for authenticated 2185 * ECDHE, the check for the auth 2186 * algorithm will set i correctly 2187 * NOTE: For ECDH-RSA, we need an ECC 2188 * not an RSA cert but for EECDH-RSA 2189 * we need an RSA cert. Placing the 2190 * checks for SSL_kECDH before RSA 2191 * checks ensures the correct cert is chosen. 2192 */ 2193 i = SSL_PKEY_ECC; 2194 } else if (alg_a & SSL_aECDSA) { 2195 i = SSL_PKEY_ECC; 2196 } else if (alg_a & SSL_aDSS) { 2197 i = SSL_PKEY_DSA_SIGN; 2198 } else if (alg_a & SSL_aRSA) { 2199 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2200 i = SSL_PKEY_RSA_SIGN; 2201 else 2202 i = SSL_PKEY_RSA_ENC; 2203 } else if (alg_a & SSL_aGOST01) { 2204 i = SSL_PKEY_GOST01; 2205 } else { /* if (alg_a & SSL_aNULL) */ 2206 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2207 return (NULL); 2208 } 2209 2210 return (c->pkeys + i); 2211} 2212 2213X509 * 2214ssl_get_server_send_cert(const SSL *s) 2215{ 2216 CERT_PKEY *cpk; 2217 2218 cpk = ssl_get_server_send_pkey(s); 2219 if (!cpk) 2220 return (NULL); 2221 return (cpk->x509); 2222} 2223 2224EVP_PKEY * 2225ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2226{ 2227 unsigned long alg_a; 2228 CERT *c; 2229 int idx = -1; 2230 2231 alg_a = cipher->algorithm_auth; 2232 c = s->cert; 2233 2234 if ((alg_a & SSL_aDSS) && 2235 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2236 idx = SSL_PKEY_DSA_SIGN; 2237 else if (alg_a & SSL_aRSA) { 2238 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2239 idx = SSL_PKEY_RSA_SIGN; 2240 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2241 idx = SSL_PKEY_RSA_ENC; 2242 } else if ((alg_a & SSL_aECDSA) && 2243 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2244 idx = SSL_PKEY_ECC; 2245 if (idx == -1) { 2246 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2247 return (NULL); 2248 } 2249 if (pmd) 2250 *pmd = c->pkeys[idx].digest; 2251 return (c->pkeys[idx].privatekey); 2252} 2253 2254DH * 2255ssl_get_auto_dh(SSL *s) 2256{ 2257 CERT_PKEY *cpk; 2258 int keylen; 2259 DH *dhp; 2260 2261 if (s->cert->dh_tmp_auto == 2) { 2262 keylen = 1024; 2263 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2264 keylen = 1024; 2265 if (s->s3->tmp.new_cipher->strength_bits == 256) 2266 keylen = 3072; 2267 } else { 2268 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2269 return (NULL); 2270 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2271 return (NULL); 2272 keylen = EVP_PKEY_bits(cpk->privatekey); 2273 } 2274 2275 if ((dhp = DH_new()) == NULL) 2276 return (NULL); 2277 2278 dhp->g = BN_new(); 2279 if (dhp->g != NULL) 2280 BN_set_word(dhp->g, 2); 2281 2282 if (keylen >= 8192) 2283 dhp->p = get_rfc3526_prime_8192(NULL); 2284 else if (keylen >= 4096) 2285 dhp->p = get_rfc3526_prime_4096(NULL); 2286 else if (keylen >= 3072) 2287 dhp->p = get_rfc3526_prime_3072(NULL); 2288 else if (keylen >= 2048) 2289 dhp->p = get_rfc3526_prime_2048(NULL); 2290 else if (keylen >= 1536) 2291 dhp->p = get_rfc3526_prime_1536(NULL); 2292 else 2293 dhp->p = get_rfc2409_prime_1024(NULL); 2294 2295 if (dhp->p == NULL || dhp->g == NULL) { 2296 DH_free(dhp); 2297 return (NULL); 2298 } 2299 return (dhp); 2300} 2301 2302void 2303ssl_update_cache(SSL *s, int mode) 2304{ 2305 int i; 2306 2307 /* 2308 * If the session_id_length is 0, we are not supposed to cache it, 2309 * and it would be rather hard to do anyway :-) 2310 */ 2311 if (s->session->session_id_length == 0) 2312 return; 2313 2314 i = s->session_ctx->session_cache_mode; 2315 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2316 || SSL_CTX_add_session(s->session_ctx, s->session)) 2317 && (s->session_ctx->new_session_cb != NULL)) { 2318 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2319 if (!s->session_ctx->new_session_cb(s, s->session)) 2320 SSL_SESSION_free(s->session); 2321 } 2322 2323 /* auto flush every 255 connections */ 2324 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2325 ((i & mode) == mode)) { 2326 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2327 s->session_ctx->stats.sess_connect_good : 2328 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2329 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2330 } 2331 } 2332} 2333 2334const SSL_METHOD * 2335SSL_get_ssl_method(SSL *s) 2336{ 2337 return (s->method); 2338} 2339 2340int 2341SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2342{ 2343 int conn = -1; 2344 int ret = 1; 2345 2346 if (s->method != meth) { 2347 if (s->handshake_func != NULL) 2348 conn = (s->handshake_func == s->method->ssl_connect); 2349 2350 if (s->method->version == meth->version) 2351 s->method = meth; 2352 else { 2353 s->method->ssl_free(s); 2354 s->method = meth; 2355 ret = s->method->ssl_new(s); 2356 } 2357 2358 if (conn == 1) 2359 s->handshake_func = meth->ssl_connect; 2360 else if (conn == 0) 2361 s->handshake_func = meth->ssl_accept; 2362 } 2363 return (ret); 2364} 2365 2366int 2367SSL_get_error(const SSL *s, int i) 2368{ 2369 int reason; 2370 unsigned long l; 2371 BIO *bio; 2372 2373 if (i > 0) 2374 return (SSL_ERROR_NONE); 2375 2376 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2377 * etc, where we do encode the error */ 2378 if ((l = ERR_peek_error()) != 0) { 2379 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2380 return (SSL_ERROR_SYSCALL); 2381 else 2382 return (SSL_ERROR_SSL); 2383 } 2384 2385 if ((i < 0) && SSL_want_read(s)) { 2386 bio = SSL_get_rbio(s); 2387 if (BIO_should_read(bio)) { 2388 return (SSL_ERROR_WANT_READ); 2389 } else if (BIO_should_write(bio)) { 2390 /* 2391 * This one doesn't make too much sense... We never 2392 * try to write to the rbio, and an application 2393 * program where rbio and wbio are separate couldn't 2394 * even know what it should wait for. However if we 2395 * ever set s->rwstate incorrectly (so that we have 2396 * SSL_want_read(s) instead of SSL_want_write(s)) 2397 * and rbio and wbio *are* the same, this test works 2398 * around that bug; so it might be safer to keep it. 2399 */ 2400 return (SSL_ERROR_WANT_WRITE); 2401 } else if (BIO_should_io_special(bio)) { 2402 reason = BIO_get_retry_reason(bio); 2403 if (reason == BIO_RR_CONNECT) 2404 return (SSL_ERROR_WANT_CONNECT); 2405 else if (reason == BIO_RR_ACCEPT) 2406 return (SSL_ERROR_WANT_ACCEPT); 2407 else 2408 return (SSL_ERROR_SYSCALL); /* unknown */ 2409 } 2410 } 2411 2412 if ((i < 0) && SSL_want_write(s)) { 2413 bio = SSL_get_wbio(s); 2414 if (BIO_should_write(bio)) { 2415 return (SSL_ERROR_WANT_WRITE); 2416 } else if (BIO_should_read(bio)) { 2417 /* 2418 * See above (SSL_want_read(s) with 2419 * BIO_should_write(bio)) 2420 */ 2421 return (SSL_ERROR_WANT_READ); 2422 } else if (BIO_should_io_special(bio)) { 2423 reason = BIO_get_retry_reason(bio); 2424 if (reason == BIO_RR_CONNECT) 2425 return (SSL_ERROR_WANT_CONNECT); 2426 else if (reason == BIO_RR_ACCEPT) 2427 return (SSL_ERROR_WANT_ACCEPT); 2428 else 2429 return (SSL_ERROR_SYSCALL); 2430 } 2431 } 2432 if ((i < 0) && SSL_want_x509_lookup(s)) { 2433 return (SSL_ERROR_WANT_X509_LOOKUP); 2434 } 2435 2436 if (i == 0) { 2437 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2438 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2439 return (SSL_ERROR_ZERO_RETURN); 2440 } 2441 return (SSL_ERROR_SYSCALL); 2442} 2443 2444int 2445SSL_do_handshake(SSL *s) 2446{ 2447 int ret = 1; 2448 2449 if (s->handshake_func == NULL) { 2450 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2451 return (-1); 2452 } 2453 2454 s->method->ssl_renegotiate_check(s); 2455 2456 if (SSL_in_init(s) || SSL_in_before(s)) { 2457 ret = s->handshake_func(s); 2458 } 2459 return (ret); 2460} 2461 2462/* 2463 * For the next 2 functions, SSL_clear() sets shutdown and so 2464 * one of these calls will reset it 2465 */ 2466void 2467SSL_set_accept_state(SSL *s) 2468{ 2469 s->server = 1; 2470 s->shutdown = 0; 2471 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2472 s->handshake_func = s->method->ssl_accept; 2473 /* clear the current cipher */ 2474 ssl_clear_cipher_ctx(s); 2475 ssl_clear_hash_ctx(&s->read_hash); 2476 ssl_clear_hash_ctx(&s->write_hash); 2477} 2478 2479void 2480SSL_set_connect_state(SSL *s) 2481{ 2482 s->server = 0; 2483 s->shutdown = 0; 2484 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2485 s->handshake_func = s->method->ssl_connect; 2486 /* clear the current cipher */ 2487 ssl_clear_cipher_ctx(s); 2488 ssl_clear_hash_ctx(&s->read_hash); 2489 ssl_clear_hash_ctx(&s->write_hash); 2490} 2491 2492int 2493ssl_undefined_function(SSL *s) 2494{ 2495 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2496 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2497 return (0); 2498} 2499 2500int 2501ssl_undefined_void_function(void) 2502{ 2503 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2504 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2505 return (0); 2506} 2507 2508int 2509ssl_undefined_const_function(const SSL *s) 2510{ 2511 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2512 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2513 return (0); 2514} 2515 2516const char * 2517ssl_version_string(int ver) 2518{ 2519 switch (ver) { 2520 case DTLS1_VERSION: 2521 return (SSL_TXT_DTLS1); 2522 case TLS1_VERSION: 2523 return (SSL_TXT_TLSV1); 2524 case TLS1_1_VERSION: 2525 return (SSL_TXT_TLSV1_1); 2526 case TLS1_2_VERSION: 2527 return (SSL_TXT_TLSV1_2); 2528 default: 2529 return ("unknown"); 2530 } 2531} 2532 2533const char * 2534SSL_get_version(const SSL *s) 2535{ 2536 return ssl_version_string(s->version); 2537} 2538 2539uint16_t 2540ssl_max_server_version(SSL *s) 2541{ 2542 uint16_t max_version; 2543 2544 /* 2545 * The SSL method will be changed during version negotiation, as such 2546 * we want to use the SSL method from the context. 2547 */ 2548 max_version = s->ctx->method->version; 2549 2550 if (SSL_IS_DTLS(s)) 2551 return (DTLS1_VERSION); 2552 2553 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2554 max_version >= TLS1_2_VERSION) 2555 return (TLS1_2_VERSION); 2556 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2557 max_version >= TLS1_1_VERSION) 2558 return (TLS1_1_VERSION); 2559 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2560 max_version >= TLS1_VERSION) 2561 return (TLS1_VERSION); 2562 2563 return (0); 2564} 2565 2566SSL * 2567SSL_dup(SSL *s) 2568{ 2569 STACK_OF(X509_NAME) *sk; 2570 X509_NAME *xn; 2571 SSL *ret; 2572 int i; 2573 2574 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2575 return (NULL); 2576 2577 ret->version = s->version; 2578 ret->type = s->type; 2579 ret->method = s->method; 2580 2581 if (s->session != NULL) { 2582 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2583 SSL_copy_session_id(ret, s); 2584 } else { 2585 /* 2586 * No session has been established yet, so we have to expect 2587 * that s->cert or ret->cert will be changed later -- 2588 * they should not both point to the same object, 2589 * and thus we can't use SSL_copy_session_id. 2590 */ 2591 2592 ret->method->ssl_free(ret); 2593 ret->method = s->method; 2594 ret->method->ssl_new(ret); 2595 2596 if (s->cert != NULL) { 2597 if (ret->cert != NULL) { 2598 ssl_cert_free(ret->cert); 2599 } 2600 ret->cert = ssl_cert_dup(s->cert); 2601 if (ret->cert == NULL) 2602 goto err; 2603 } 2604 2605 SSL_set_session_id_context(ret, 2606 s->sid_ctx, s->sid_ctx_length); 2607 } 2608 2609 ret->options = s->options; 2610 ret->mode = s->mode; 2611 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2612 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2613 ret->msg_callback = s->msg_callback; 2614 ret->msg_callback_arg = s->msg_callback_arg; 2615 SSL_set_verify(ret, SSL_get_verify_mode(s), 2616 SSL_get_verify_callback(s)); 2617 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2618 ret->generate_session_id = s->generate_session_id; 2619 2620 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2621 2622 ret->debug = s->debug; 2623 2624 /* copy app data, a little dangerous perhaps */ 2625 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2626 &ret->ex_data, &s->ex_data)) 2627 goto err; 2628 2629 /* setup rbio, and wbio */ 2630 if (s->rbio != NULL) { 2631 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2632 goto err; 2633 } 2634 if (s->wbio != NULL) { 2635 if (s->wbio != s->rbio) { 2636 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2637 goto err; 2638 } else 2639 ret->wbio = ret->rbio; 2640 } 2641 ret->rwstate = s->rwstate; 2642 ret->in_handshake = s->in_handshake; 2643 ret->handshake_func = s->handshake_func; 2644 ret->server = s->server; 2645 ret->renegotiate = s->renegotiate; 2646 ret->new_session = s->new_session; 2647 ret->quiet_shutdown = s->quiet_shutdown; 2648 ret->shutdown = s->shutdown; 2649 /* SSL_dup does not really work at any state, though */ 2650 ret->state=s->state; 2651 ret->rstate = s->rstate; 2652 2653 /* 2654 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2655 * ret->init_off 2656 */ 2657 ret->init_num = 0; 2658 2659 ret->hit = s->hit; 2660 2661 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2662 2663 /* dup the cipher_list and cipher_list_by_id stacks */ 2664 if (s->cipher_list != NULL) { 2665 if ((ret->cipher_list = 2666 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2667 goto err; 2668 } 2669 if (s->cipher_list_by_id != NULL) { 2670 if ((ret->cipher_list_by_id = 2671 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2672 goto err; 2673 } 2674 2675 /* Dup the client_CA list */ 2676 if (s->client_CA != NULL) { 2677 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2678 ret->client_CA = sk; 2679 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2680 xn = sk_X509_NAME_value(sk, i); 2681 if (sk_X509_NAME_set(sk, i, 2682 X509_NAME_dup(xn)) == NULL) { 2683 X509_NAME_free(xn); 2684 goto err; 2685 } 2686 } 2687 } 2688 2689 if (0) { 2690err: 2691 if (ret != NULL) 2692 SSL_free(ret); 2693 ret = NULL; 2694 } 2695 return (ret); 2696} 2697 2698void 2699ssl_clear_cipher_ctx(SSL *s) 2700{ 2701 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2702 s->enc_read_ctx = NULL; 2703 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2704 s->enc_write_ctx = NULL; 2705 2706 if (s->aead_read_ctx != NULL) { 2707 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2708 free(s->aead_read_ctx); 2709 s->aead_read_ctx = NULL; 2710 } 2711 if (s->aead_write_ctx != NULL) { 2712 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2713 free(s->aead_write_ctx); 2714 s->aead_write_ctx = NULL; 2715 } 2716 2717} 2718 2719/* Fix this function so that it takes an optional type parameter */ 2720X509 * 2721SSL_get_certificate(const SSL *s) 2722{ 2723 if (s->cert != NULL) 2724 return (s->cert->key->x509); 2725 else 2726 return (NULL); 2727} 2728 2729/* Fix this function so that it takes an optional type parameter */ 2730EVP_PKEY * 2731SSL_get_privatekey(SSL *s) 2732{ 2733 if (s->cert != NULL) 2734 return (s->cert->key->privatekey); 2735 else 2736 return (NULL); 2737} 2738 2739const SSL_CIPHER * 2740SSL_get_current_cipher(const SSL *s) 2741{ 2742 if ((s->session != NULL) && (s->session->cipher != NULL)) 2743 return (s->session->cipher); 2744 return (NULL); 2745} 2746const void * 2747SSL_get_current_compression(SSL *s) 2748{ 2749 return (NULL); 2750} 2751 2752const void * 2753SSL_get_current_expansion(SSL *s) 2754{ 2755 return (NULL); 2756} 2757 2758int 2759ssl_init_wbio_buffer(SSL *s, int push) 2760{ 2761 BIO *bbio; 2762 2763 if (s->bbio == NULL) { 2764 bbio = BIO_new(BIO_f_buffer()); 2765 if (bbio == NULL) 2766 return (0); 2767 s->bbio = bbio; 2768 } else { 2769 bbio = s->bbio; 2770 if (s->bbio == s->wbio) 2771 s->wbio = BIO_pop(s->wbio); 2772 } 2773 (void)BIO_reset(bbio); 2774/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2775 if (!BIO_set_read_buffer_size(bbio, 1)) { 2776 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2777 return (0); 2778 } 2779 if (push) { 2780 if (s->wbio != bbio) 2781 s->wbio = BIO_push(bbio, s->wbio); 2782 } else { 2783 if (s->wbio == bbio) 2784 s->wbio = BIO_pop(bbio); 2785 } 2786 return (1); 2787} 2788 2789void 2790ssl_free_wbio_buffer(SSL *s) 2791{ 2792 if (s == NULL) 2793 return; 2794 2795 if (s->bbio == NULL) 2796 return; 2797 2798 if (s->bbio == s->wbio) { 2799 /* remove buffering */ 2800 s->wbio = BIO_pop(s->wbio); 2801 } 2802 BIO_free(s->bbio); 2803 s->bbio = NULL; 2804} 2805 2806void 2807SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2808{ 2809 ctx->quiet_shutdown = mode; 2810} 2811 2812int 2813SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2814{ 2815 return (ctx->quiet_shutdown); 2816} 2817 2818void 2819SSL_set_quiet_shutdown(SSL *s, int mode) 2820{ 2821 s->quiet_shutdown = mode; 2822} 2823 2824int 2825SSL_get_quiet_shutdown(const SSL *s) 2826{ 2827 return (s->quiet_shutdown); 2828} 2829 2830void 2831SSL_set_shutdown(SSL *s, int mode) 2832{ 2833 s->shutdown = mode; 2834} 2835 2836int 2837SSL_get_shutdown(const SSL *s) 2838{ 2839 return (s->shutdown); 2840} 2841 2842int 2843SSL_version(const SSL *s) 2844{ 2845 return (s->version); 2846} 2847 2848SSL_CTX * 2849SSL_get_SSL_CTX(const SSL *ssl) 2850{ 2851 return (ssl->ctx); 2852} 2853 2854SSL_CTX * 2855SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2856{ 2857 if (ssl->ctx == ctx) 2858 return (ssl->ctx); 2859 if (ctx == NULL) 2860 ctx = ssl->initial_ctx; 2861 if (ssl->cert != NULL) 2862 ssl_cert_free(ssl->cert); 2863 ssl->cert = ssl_cert_dup(ctx->cert); 2864 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2865 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2866 ssl->ctx = ctx; 2867 return (ssl->ctx); 2868} 2869 2870int 2871SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2872{ 2873 return (X509_STORE_set_default_paths(ctx->cert_store)); 2874} 2875 2876int 2877SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2878 const char *CApath) 2879{ 2880 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2881} 2882 2883int 2884SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2885{ 2886 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2887} 2888 2889void 2890SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2891{ 2892 ssl->info_callback = cb; 2893} 2894 2895void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2896{ 2897 return (ssl->info_callback); 2898} 2899 2900int 2901SSL_state(const SSL *ssl) 2902{ 2903 return (ssl->state); 2904} 2905 2906void 2907SSL_set_state(SSL *ssl, int state) 2908{ 2909 ssl->state = state; 2910} 2911 2912void 2913SSL_set_verify_result(SSL *ssl, long arg) 2914{ 2915 ssl->verify_result = arg; 2916} 2917 2918long 2919SSL_get_verify_result(const SSL *ssl) 2920{ 2921 return (ssl->verify_result); 2922} 2923 2924int 2925SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2926 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2927{ 2928 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2929 new_func, dup_func, free_func)); 2930} 2931 2932int 2933SSL_set_ex_data(SSL *s, int idx, void *arg) 2934{ 2935 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2936} 2937 2938void * 2939SSL_get_ex_data(const SSL *s, int idx) 2940{ 2941 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2942} 2943 2944int 2945SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2946 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2947{ 2948 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2949 new_func, dup_func, free_func)); 2950} 2951 2952int 2953SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2954{ 2955 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2956} 2957 2958void * 2959SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2960{ 2961 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2962} 2963 2964int 2965ssl_ok(SSL *s) 2966{ 2967 return (1); 2968} 2969 2970X509_STORE * 2971SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2972{ 2973 return (ctx->cert_store); 2974} 2975 2976void 2977SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2978{ 2979 if (ctx->cert_store != NULL) 2980 X509_STORE_free(ctx->cert_store); 2981 ctx->cert_store = store; 2982} 2983 2984int 2985SSL_want(const SSL *s) 2986{ 2987 return (s->rwstate); 2988} 2989 2990void 2991SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2992 int keylength)) 2993{ 2994 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2995} 2996 2997void 2998SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2999 int keylength)) 3000{ 3001 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3002} 3003 3004void 3005SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3006 int keylength)) 3007{ 3008 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3009} 3010 3011void 3012SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3013 int keylength)) 3014{ 3015 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3016} 3017 3018void 3019SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3020 int is_export, int keylength)) 3021{ 3022 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3023 (void (*)(void))ecdh); 3024} 3025 3026void 3027SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3028 int keylength)) 3029{ 3030 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3031} 3032 3033 3034void 3035SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3036 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3037{ 3038 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3039 (void (*)(void))cb); 3040} 3041 3042void 3043SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3044 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3045{ 3046 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3047} 3048 3049void 3050ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3051{ 3052 if (*hash) 3053 EVP_MD_CTX_destroy(*hash); 3054 *hash = NULL; 3055} 3056 3057void 3058SSL_set_debug(SSL *s, int debug) 3059{ 3060 s->debug = debug; 3061} 3062 3063int 3064SSL_cache_hit(SSL *s) 3065{ 3066 return (s->hit); 3067} 3068 3069IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3070