ssl_lib.c revision 1.38
1/*! \file ssl/ssl_lib.c 2 * \brief Version independent SSL functions. 3 */ 4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay@cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay@cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60/* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core@openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay@cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh@cryptsoft.com). 111 * 112 */ 113/* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118/* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145#include <stdio.h> 146#include "ssl_locl.h" 147#include "kssl_lcl.h" 148#include <openssl/objects.h> 149#include <openssl/lhash.h> 150#include <openssl/x509v3.h> 151#include <openssl/rand.h> 152#include <openssl/ocsp.h> 153#ifndef OPENSSL_NO_DH 154#include <openssl/dh.h> 155#endif 156#ifndef OPENSSL_NO_ENGINE 157#include <openssl/engine.h> 158#endif 159 160const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162SSL3_ENC_METHOD ssl3_undef_enc_method = { 163 /* evil casts, but these functions are only called if there's a library bug */ 164 (int (*)(SSL *, int))ssl_undefined_function, 165 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 166 ssl_undefined_function, 167 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 168 (int (*)(SSL*, int))ssl_undefined_function, 169 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function, 170 0, /* finish_mac_length */ 171 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 172 NULL, /* client_finished_label */ 173 0, /* client_finished_label_len */ 174 NULL, /* server_finished_label */ 175 0, /* server_finished_label_len */ 176 (int (*)(int))ssl_undefined_function, 177 (int (*)(SSL *, unsigned char *, size_t, const char *, 178 size_t, const unsigned char *, size_t, 179 int use_context)) ssl_undefined_function, 180}; 181 182int 183SSL_clear(SSL *s) 184{ 185 186 if (s->method == NULL) { 187 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 188 return (0); 189 } 190 191 if (ssl_clear_bad_session(s)) { 192 SSL_SESSION_free(s->session); 193 s->session = NULL; 194 } 195 196 s->error = 0; 197 s->hit = 0; 198 s->shutdown = 0; 199 200 if (s->renegotiate) { 201 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 202 return 0; 203 } 204 205 s->type = 0; 206 207 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 208 209 s->version = s->method->version; 210 s->client_version = s->version; 211 s->rwstate = SSL_NOTHING; 212 s->rstate = SSL_ST_READ_HEADER; 213#if 0 214 s->read_ahead = s->ctx->read_ahead; 215#endif 216 217 if (s->init_buf != NULL) { 218 BUF_MEM_free(s->init_buf); 219 s->init_buf = NULL; 220 } 221 222 ssl_clear_cipher_ctx(s); 223 ssl_clear_hash_ctx(&s->read_hash); 224 ssl_clear_hash_ctx(&s->write_hash); 225 226 s->first_packet = 0; 227 228#if 1 229 /* Check to see if we were changed into a different method, if 230 * so, revert back if we are not doing session-id reuse. */ 231 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) { 232 s->method->ssl_free(s); 233 s->method = s->ctx->method; 234 if (!s->method->ssl_new(s)) 235 return (0); 236 } else 237#endif 238 s->method->ssl_clear(s); 239 return (1); 240} 241 242/* Used to change an SSL_CTXs default SSL method type */ 243int 244SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 245{ 246 STACK_OF(SSL_CIPHER) *sk; 247 248 ctx->method = meth; 249 250 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 251 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 252 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 253 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 254 return (0); 255 } 256 return (1); 257} 258 259SSL * 260SSL_new(SSL_CTX *ctx) 261{ 262 SSL *s; 263 264 if (ctx == NULL) { 265 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 266 return (NULL); 267 } 268 if (ctx->method == NULL) { 269 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 270 return (NULL); 271 } 272 273 s = (SSL *)malloc(sizeof(SSL)); 274 if (s == NULL) 275 goto err; 276 memset(s, 0, sizeof(SSL)); 277 278#ifndef OPENSSL_NO_KRB5 279 s->kssl_ctx = kssl_ctx_new(); 280#endif /* OPENSSL_NO_KRB5 */ 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 /* Earlier library versions used to copy the pointer to 288 * the CERT, not its contents; only when setting new 289 * parameters for the per-SSL copy, ssl_cert_new would be 290 * called (and the direct reference to the per-SSL_CTX 291 * settings would be lost, but those still were indirectly 292 * accessed for various purposes, and for that reason they 293 * used to be known as s->ctx->default_cert). 294 * Now we don't look at the SSL_CTX's CERT after having 295 * duplicated it once. */ 296 297 s->cert = ssl_cert_dup(ctx->cert); 298 if (s->cert == NULL) 299 goto err; 300 } else 301 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 302 303 s->read_ahead = ctx->read_ahead; 304 s->msg_callback = ctx->msg_callback; 305 s->msg_callback_arg = ctx->msg_callback_arg; 306 s->verify_mode = ctx->verify_mode; 307#if 0 308 s->verify_depth = ctx->verify_depth; 309#endif 310 s->sid_ctx_length = ctx->sid_ctx_length; 311 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 312 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 313 s->verify_callback = ctx->default_verify_callback; 314 s->generate_session_id = ctx->generate_session_id; 315 316 s->param = X509_VERIFY_PARAM_new(); 317 if (!s->param) 318 goto err; 319 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 320#if 0 321 s->purpose = ctx->purpose; 322 s->trust = ctx->trust; 323#endif 324 s->quiet_shutdown = ctx->quiet_shutdown; 325 s->max_send_fragment = ctx->max_send_fragment; 326 327 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 328 s->ctx = ctx; 329#ifndef OPENSSL_NO_TLSEXT 330 s->tlsext_debug_cb = 0; 331 s->tlsext_debug_arg = NULL; 332 s->tlsext_ticket_expected = 0; 333 s->tlsext_status_type = -1; 334 s->tlsext_status_expected = 0; 335 s->tlsext_ocsp_ids = NULL; 336 s->tlsext_ocsp_exts = NULL; 337 s->tlsext_ocsp_resp = NULL; 338 s->tlsext_ocsp_resplen = -1; 339 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 340 s->initial_ctx = ctx; 341# ifndef OPENSSL_NO_NEXTPROTONEG 342 s->next_proto_negotiated = NULL; 343# endif 344#endif 345 346 s->verify_result = X509_V_OK; 347 348 s->method = ctx->method; 349 350 if (!s->method->ssl_new(s)) 351 goto err; 352 353 s->references = 1; 354 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 355 356 SSL_clear(s); 357 358 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 359 360#ifndef OPENSSL_NO_PSK 361 s->psk_client_callback = ctx->psk_client_callback; 362 s->psk_server_callback = ctx->psk_server_callback; 363#endif 364 365 return (s); 366err: 367 if (s != NULL) { 368 if (s->cert != NULL) 369 ssl_cert_free(s->cert); 370 if (s->ctx != NULL) 371 SSL_CTX_free(s->ctx); /* decrement reference count */ 372 free(s); 373 } 374 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 375 return (NULL); 376} 377 378int 379SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381{ 382 if (sid_ctx_len > sizeof ctx->sid_ctx) { 383 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return 0; 385 } 386 ctx->sid_ctx_length = sid_ctx_len; 387 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return 1; 390} 391 392int 393SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 394 unsigned int sid_ctx_len) 395{ 396 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 397 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 398 return 0; 399 } 400 ssl->sid_ctx_length = sid_ctx_len; 401 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 402 403 return 1; 404} 405 406int 407SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 408{ 409 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 410 ctx->generate_session_id = cb; 411 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 412 return 1; 413} 414 415int 416SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 417{ 418 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 419 ssl->generate_session_id = cb; 420 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 421 return 1; 422} 423 424int 425SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 426 unsigned int id_len) 427{ 428 /* 429 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 430 * shows how we can "construct" a session to give us the desired 431 * check - ie. to find if there's a session in the hash table 432 * that would conflict with any new session built out of this 433 * id/id_len and the ssl_version in use by this SSL. 434 */ 435 SSL_SESSION r, *p; 436 437 if (id_len > sizeof r.session_id) 438 return 0; 439 440 r.ssl_version = ssl->version; 441 r.session_id_length = id_len; 442 memcpy(r.session_id, id, id_len); 443 444 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 445 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 446 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 447 return (p != NULL); 448} 449 450int 451SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 452{ 453 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 454} 455 456int 457SSL_set_purpose(SSL *s, int purpose) 458{ 459 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 460} 461 462int 463SSL_CTX_set_trust(SSL_CTX *s, int trust) 464{ 465 return X509_VERIFY_PARAM_set_trust(s->param, trust); 466} 467 468int 469SSL_set_trust(SSL *s, int trust) 470{ 471 return X509_VERIFY_PARAM_set_trust(s->param, trust); 472} 473 474int 475SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 476{ 477 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 478} 479 480int 481SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482{ 483 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 484} 485 486void 487SSL_free(SSL *s) 488{ 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 if (s->param) 499 X509_VERIFY_PARAM_free(s->param); 500 501 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 502 503 if (s->bbio != NULL) { 504 /* If the buffering BIO is in place, pop it off */ 505 if (s->bbio == s->wbio) { 506 s->wbio = BIO_pop(s->wbio); 507 } 508 BIO_free(s->bbio); 509 s->bbio = NULL; 510 } 511 if (s->rbio != NULL) 512 BIO_free_all(s->rbio); 513 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 514 BIO_free_all(s->wbio); 515 516 if (s->init_buf != NULL) 517 BUF_MEM_free(s->init_buf); 518 519 /* add extra stuff */ 520 if (s->cipher_list != NULL) 521 sk_SSL_CIPHER_free(s->cipher_list); 522 if (s->cipher_list_by_id != NULL) 523 sk_SSL_CIPHER_free(s->cipher_list_by_id); 524 525 /* Make the next call work :-) */ 526 if (s->session != NULL) { 527 ssl_clear_bad_session(s); 528 SSL_SESSION_free(s->session); 529 } 530 531 ssl_clear_cipher_ctx(s); 532 ssl_clear_hash_ctx(&s->read_hash); 533 ssl_clear_hash_ctx(&s->write_hash); 534 535 if (s->cert != NULL) 536 ssl_cert_free(s->cert); 537 /* Free up if allocated */ 538 539#ifndef OPENSSL_NO_TLSEXT 540 if (s->tlsext_hostname) 541 free(s->tlsext_hostname); 542 if (s->initial_ctx) 543 SSL_CTX_free(s->initial_ctx); 544#ifndef OPENSSL_NO_EC 545 if (s->tlsext_ecpointformatlist) 546 free(s->tlsext_ecpointformatlist); 547 if (s->tlsext_ellipticcurvelist) 548 free(s->tlsext_ellipticcurvelist); 549#endif /* OPENSSL_NO_EC */ 550 if (s->tlsext_opaque_prf_input) 551 free(s->tlsext_opaque_prf_input); 552 if (s->tlsext_ocsp_exts) 553 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 554 X509_EXTENSION_free); 555 if (s->tlsext_ocsp_ids) 556 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 557 if (s->tlsext_ocsp_resp) 558 free(s->tlsext_ocsp_resp); 559#endif 560 561 if (s->client_CA != NULL) 562 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 563 564 if (s->method != NULL) 565 s->method->ssl_free(s); 566 567 if (s->ctx) 568 SSL_CTX_free(s->ctx); 569 570#ifndef OPENSSL_NO_KRB5 571 if (s->kssl_ctx != NULL) 572 kssl_ctx_free(s->kssl_ctx); 573#endif /* OPENSSL_NO_KRB5 */ 574 575#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 576 if (s->next_proto_negotiated) 577 free(s->next_proto_negotiated); 578#endif 579 580#ifndef OPENSSL_NO_SRTP 581 if (s->srtp_profiles) 582 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 583#endif 584 585 free(s); 586} 587 588void 589SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 590{ 591 /* If the output buffering BIO is still in place, remove it 592 */ 593 if (s->bbio != NULL) { 594 if (s->wbio == s->bbio) { 595 s->wbio = s->wbio->next_bio; 596 s->bbio->next_bio = NULL; 597 } 598 } 599 if ((s->rbio != NULL) && (s->rbio != rbio)) 600 BIO_free_all(s->rbio); 601 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 602 BIO_free_all(s->wbio); 603 s->rbio = rbio; 604 s->wbio = wbio; 605} 606 607BIO * 608SSL_get_rbio(const SSL *s) 609{ 610 return (s->rbio); 611} 612 613BIO * 614SSL_get_wbio(const SSL *s) 615{ 616 return (s->wbio); 617} 618 619int 620SSL_get_fd(const SSL *s) 621{ 622 return (SSL_get_rfd(s)); 623} 624 625int 626SSL_get_rfd(const SSL *s) 627{ 628 int ret = -1; 629 BIO *b, *r; 630 631 b = SSL_get_rbio(s); 632 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 633 if (r != NULL) 634 BIO_get_fd(r, &ret); 635 return (ret); 636} 637 638int 639SSL_get_wfd(const SSL *s) 640{ 641 int ret = -1; 642 BIO *b, *r; 643 644 b = SSL_get_wbio(s); 645 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 646 if (r != NULL) 647 BIO_get_fd(r, &ret); 648 return (ret); 649} 650 651#ifndef OPENSSL_NO_SOCK 652int 653SSL_set_fd(SSL *s, int fd) 654{ 655 int ret = 0; 656 BIO *bio = NULL; 657 658 bio = BIO_new(BIO_s_socket()); 659 660 if (bio == NULL) { 661 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 662 goto err; 663 } 664 BIO_set_fd(bio, fd, BIO_NOCLOSE); 665 SSL_set_bio(s, bio, bio); 666 ret = 1; 667err: 668 return (ret); 669} 670 671int 672SSL_set_wfd(SSL *s, int fd) 673{ 674 int ret = 0; 675 BIO *bio = NULL; 676 677 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 678 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 679 bio = BIO_new(BIO_s_socket()); 680 681 if (bio == NULL) 682 { SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 683 goto err; 684 } 685 BIO_set_fd(bio, fd, BIO_NOCLOSE); 686 SSL_set_bio(s, SSL_get_rbio(s), bio); 687 } else 688 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 689 ret = 1; 690err: 691 return (ret); 692} 693 694int 695SSL_set_rfd(SSL *s, int fd) 696{ 697 int ret = 0; 698 BIO *bio = NULL; 699 700 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 701 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 702 bio = BIO_new(BIO_s_socket()); 703 704 if (bio == NULL) { 705 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 706 goto err; 707 } 708 BIO_set_fd(bio, fd, BIO_NOCLOSE); 709 SSL_set_bio(s, bio, SSL_get_wbio(s)); 710 } else 711 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 712 ret = 1; 713err: 714 return (ret); 715} 716#endif 717 718 719/* return length of latest Finished message we sent, copy to 'buf' */ 720size_t 721SSL_get_finished(const SSL *s, void *buf, size_t count) 722{ 723 size_t ret = 0; 724 725 if (s->s3 != NULL) { 726 ret = s->s3->tmp.finish_md_len; 727 if (count > ret) 728 count = ret; 729 memcpy(buf, s->s3->tmp.finish_md, count); 730 } 731 return ret; 732} 733 734/* return length of latest Finished message we expected, copy to 'buf' */ 735size_t 736SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 737{ 738 size_t ret = 0; 739 740 if (s->s3 != NULL) { 741 ret = s->s3->tmp.peer_finish_md_len; 742 if (count > ret) 743 count = ret; 744 memcpy(buf, s->s3->tmp.peer_finish_md, count); 745 } 746 return ret; 747} 748 749 750int 751SSL_get_verify_mode(const SSL *s) 752{ 753 return (s->verify_mode); 754} 755 756int 757SSL_get_verify_depth(const SSL *s) 758{ 759 return X509_VERIFY_PARAM_get_depth(s->param); 760} 761 762int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 763{ 764 return (s->verify_callback); 765} 766 767int 768SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 769{ 770 return (ctx->verify_mode); 771} 772 773int 774SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 775{ 776 return X509_VERIFY_PARAM_get_depth(ctx->param); 777} 778 779int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 780{ 781 return (ctx->default_verify_callback); 782} 783 784void 785SSL_set_verify(SSL *s, int mode, 786 int (*callback)(int ok, X509_STORE_CTX *ctx)) 787{ 788 s->verify_mode = mode; 789 if (callback != NULL) 790 s->verify_callback = callback; 791} 792 793void 794SSL_set_verify_depth(SSL *s, int depth) 795{ 796 X509_VERIFY_PARAM_set_depth(s->param, depth); 797} 798 799void 800SSL_set_read_ahead(SSL *s, int yes) 801{ 802 s->read_ahead = yes; 803} 804 805int 806SSL_get_read_ahead(const SSL *s) 807{ 808 return (s->read_ahead); 809} 810 811int 812SSL_pending(const SSL *s) 813{ 814 /* SSL_pending cannot work properly if read-ahead is enabled 815 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 816 * and it is impossible to fix since SSL_pending cannot report 817 * errors that may be observed while scanning the new data. 818 * (Note that SSL_pending() is often used as a boolean value, 819 * so we'd better not return -1.) 820 */ 821 return (s->method->ssl_pending(s)); 822} 823 824X509 * 825SSL_get_peer_certificate(const SSL *s) 826{ 827 X509 *r; 828 829 if ((s == NULL) || (s->session == NULL)) 830 r = NULL; 831 else 832 r = s->session->peer; 833 834 if (r == NULL) 835 return (r); 836 837 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 838 839 return (r); 840} 841 842STACK_OF(X509) * 843SSL_get_peer_cert_chain(const SSL *s) 844{ 845 STACK_OF(X509) *r; 846 847 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 848 r = NULL; 849 else 850 r = s->session->sess_cert->cert_chain; 851 852 /* If we are a client, cert_chain includes the peer's own 853 * certificate; 854if we are a server, it does not. */ 855 856 return (r); 857} 858 859/* Now in theory, since the calling process own 't' it should be safe to 860 * modify. We need to be able to read f without being hassled */ 861void 862SSL_copy_session_id(SSL *t, const SSL *f) 863{ 864 CERT *tmp; 865 866 /* Do we need to to SSL locking? */ 867 SSL_set_session(t, SSL_get_session(f)); 868 869 /* what if we are setup as SSLv2 but want to talk SSLv3 or 870 * vice-versa */ 871 if (t->method != f->method) { 872 t->method->ssl_free(t); /* cleanup current */ 873 t->method=f->method; /* change method */ 874 t->method->ssl_new(t); /* setup new */ 875 } 876 877 tmp = t->cert; 878 if (f->cert != NULL) { 879 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 880 t->cert = f->cert; 881 } else 882 t->cert = NULL; 883 if (tmp != NULL) 884 ssl_cert_free(tmp); 885 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 886} 887 888/* Fix this so it checks all the valid key/cert options */ 889int 890SSL_CTX_check_private_key(const SSL_CTX *ctx) 891{ 892 if ((ctx == NULL) || 893 (ctx->cert == NULL) || 894 (ctx->cert->key->x509 == NULL)) { 895 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 896 return (0); 897 } 898 if (ctx->cert->key->privatekey == NULL) { 899 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 900 return (0); 901 } 902 return (X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 903} 904 905/* Fix this function so that it takes an optional type parameter */ 906int 907SSL_check_private_key(const SSL *ssl) 908{ 909 if (ssl == NULL) { 910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 911 return (0); 912 } 913 if (ssl->cert == NULL) { 914 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return 0; 916 } 917 if (ssl->cert->key->x509 == NULL) { 918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 919 return (0); 920 } 921 if (ssl->cert->key->privatekey == NULL) { 922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 923 return (0); 924 } 925 return(X509_check_private_key(ssl->cert->key->x509, 926 ssl->cert->key->privatekey)); 927} 928 929int 930SSL_accept(SSL *s) 931{ 932 if (s->handshake_func == 0) 933 /* Not properly initialized yet */ 934 SSL_set_accept_state(s); 935 936 return (s->method->ssl_accept(s)); 937} 938 939int 940SSL_connect(SSL *s) 941{ 942 if (s->handshake_func == 0) 943 /* Not properly initialized yet */ 944 SSL_set_connect_state(s); 945 946 return (s->method->ssl_connect(s)); 947} 948 949long 950SSL_get_default_timeout(const SSL *s) 951{ 952 return (s->method->get_timeout()); 953} 954 955int 956SSL_read(SSL *s, void *buf, int num) 957{ 958 if (s->handshake_func == 0) { 959 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 960 return -1; 961 } 962 963 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 964 s->rwstate = SSL_NOTHING; 965 return (0); 966 } 967 return (s->method->ssl_read(s, buf, num)); 968} 969 970int 971SSL_peek(SSL *s, void *buf, int num) 972{ 973 if (s->handshake_func == 0) { 974 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 975 return -1; 976 } 977 978 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 979 return (0); 980 } 981 return (s->method->ssl_peek(s, buf, num)); 982} 983 984int 985SSL_write(SSL *s, const void *buf, int num) 986{ 987 if (s->handshake_func == 0) { 988 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 989 return -1; 990 } 991 992 if (s->shutdown & SSL_SENT_SHUTDOWN) { 993 s->rwstate = SSL_NOTHING; 994 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 995 return (-1); 996 } 997 return (s->method->ssl_write(s, buf, num)); 998} 999 1000int 1001SSL_shutdown(SSL *s) 1002{ 1003 /* Note that this function behaves differently from what one might 1004 * expect. Return values are 0 for no success (yet), 1005 * 1 for success; but calling it once is usually not enough, 1006 * even if blocking I/O is used (see ssl3_shutdown). 1007 */ 1008 1009 if (s->handshake_func == 0) { 1010 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1011 return -1; 1012 } 1013 1014 if ((s != NULL) && !SSL_in_init(s)) 1015 return (s->method->ssl_shutdown(s)); 1016 else 1017 return (1); 1018} 1019 1020int 1021SSL_renegotiate(SSL *s) 1022{ 1023 if (s->renegotiate == 0) 1024 s->renegotiate = 1; 1025 1026 s->new_session = 1; 1027 1028 return (s->method->ssl_renegotiate(s)); 1029} 1030 1031int 1032SSL_renegotiate_abbreviated(SSL *s) 1033{ 1034 if (s->renegotiate == 0) 1035 s->renegotiate = 1; 1036 1037 s->new_session = 0; 1038 1039 return (s->method->ssl_renegotiate(s)); 1040} 1041 1042int 1043SSL_renegotiate_pending(SSL *s) 1044{ 1045 /* becomes true when negotiation is requested; 1046 * false again once a handshake has finished */ 1047 return (s->renegotiate != 0); 1048} 1049 1050long 1051SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1052{ 1053 long l; 1054 1055 switch (cmd) { 1056 case SSL_CTRL_GET_READ_AHEAD: 1057 return (s->read_ahead); 1058 case SSL_CTRL_SET_READ_AHEAD: 1059 l = s->read_ahead; 1060 s->read_ahead = larg; 1061 return (l); 1062 1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1064 s->msg_callback_arg = parg; 1065 return 1; 1066 1067 case SSL_CTRL_OPTIONS: 1068 return (s->options|=larg); 1069 case SSL_CTRL_CLEAR_OPTIONS: 1070 return (s->options&=~larg); 1071 case SSL_CTRL_MODE: 1072 return (s->mode|=larg); 1073 case SSL_CTRL_CLEAR_MODE: 1074 return (s->mode &=~larg); 1075 case SSL_CTRL_GET_MAX_CERT_LIST: 1076 return (s->max_cert_list); 1077 case SSL_CTRL_SET_MAX_CERT_LIST: 1078 l = s->max_cert_list; 1079 s->max_cert_list = larg; 1080 return (l); 1081 case SSL_CTRL_SET_MTU: 1082#ifndef OPENSSL_NO_DTLS1 1083 if (larg < (long)dtls1_min_mtu()) 1084 return 0; 1085#endif 1086 1087 if (SSL_version(s) == DTLS1_VERSION || 1088 SSL_version(s) == DTLS1_BAD_VER) { 1089 s->d1->mtu = larg; 1090 return larg; 1091 } 1092 return 0; 1093 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1094 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1095 return 0; 1096 s->max_send_fragment = larg; 1097 return 1; 1098 case SSL_CTRL_GET_RI_SUPPORT: 1099 if (s->s3) 1100 return s->s3->send_connection_binding; 1101 else return 0; 1102 default: 1103 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1104 } 1105} 1106 1107long 1108SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1109{ 1110 switch (cmd) { 1111 case SSL_CTRL_SET_MSG_CALLBACK: 1112 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1113 return 1; 1114 1115 default: 1116 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1117 } 1118} 1119 1120LHASH_OF(SSL_SESSION) * 1121SSL_CTX_sessions(SSL_CTX *ctx) 1122{ 1123 return ctx->sessions; 1124} 1125 1126long 1127SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1128{ 1129 long l; 1130 1131 switch (cmd) { 1132 case SSL_CTRL_GET_READ_AHEAD: 1133 return (ctx->read_ahead); 1134 case SSL_CTRL_SET_READ_AHEAD: 1135 l = ctx->read_ahead; 1136 ctx->read_ahead = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1140 ctx->msg_callback_arg = parg; 1141 return 1; 1142 1143 case SSL_CTRL_GET_MAX_CERT_LIST: 1144 return (ctx->max_cert_list); 1145 case SSL_CTRL_SET_MAX_CERT_LIST: 1146 l = ctx->max_cert_list; 1147 ctx->max_cert_list = larg; 1148 return (l); 1149 1150 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1151 l = ctx->session_cache_size; 1152 ctx->session_cache_size = larg; 1153 return (l); 1154 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1155 return (ctx->session_cache_size); 1156 case SSL_CTRL_SET_SESS_CACHE_MODE: 1157 l = ctx->session_cache_mode; 1158 ctx->session_cache_mode = larg; 1159 return (l); 1160 case SSL_CTRL_GET_SESS_CACHE_MODE: 1161 return (ctx->session_cache_mode); 1162 1163 case SSL_CTRL_SESS_NUMBER: 1164 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1165 case SSL_CTRL_SESS_CONNECT: 1166 return (ctx->stats.sess_connect); 1167 case SSL_CTRL_SESS_CONNECT_GOOD: 1168 return (ctx->stats.sess_connect_good); 1169 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1170 return (ctx->stats.sess_connect_renegotiate); 1171 case SSL_CTRL_SESS_ACCEPT: 1172 return (ctx->stats.sess_accept); 1173 case SSL_CTRL_SESS_ACCEPT_GOOD: 1174 return (ctx->stats.sess_accept_good); 1175 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1176 return (ctx->stats.sess_accept_renegotiate); 1177 case SSL_CTRL_SESS_HIT: 1178 return (ctx->stats.sess_hit); 1179 case SSL_CTRL_SESS_CB_HIT: 1180 return (ctx->stats.sess_cb_hit); 1181 case SSL_CTRL_SESS_MISSES: 1182 return (ctx->stats.sess_miss); 1183 case SSL_CTRL_SESS_TIMEOUTS: 1184 return (ctx->stats.sess_timeout); 1185 case SSL_CTRL_SESS_CACHE_FULL: 1186 return (ctx->stats.sess_cache_full); 1187 case SSL_CTRL_OPTIONS: 1188 return (ctx->options|=larg); 1189 case SSL_CTRL_CLEAR_OPTIONS: 1190 return (ctx->options&=~larg); 1191 case SSL_CTRL_MODE: 1192 return (ctx->mode|=larg); 1193 case SSL_CTRL_CLEAR_MODE: 1194 return (ctx->mode&=~larg); 1195 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1196 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1197 return 0; 1198 ctx->max_send_fragment = larg; 1199 return 1; 1200 default: 1201 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1202 } 1203} 1204 1205long 1206SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1207{ 1208 switch (cmd) { 1209 case SSL_CTRL_SET_MSG_CALLBACK: 1210 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1211 return 1; 1212 1213 default: 1214 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1215 } 1216} 1217 1218int 1219ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1220{ 1221 long l; 1222 1223 l = a->id - b->id; 1224 if (l == 0L) 1225 return (0); 1226 else 1227 return ((l > 0) ? 1:-1); 1228} 1229 1230int 1231ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1232 const SSL_CIPHER * const *bp) 1233{ 1234 long l; 1235 1236 l = (*ap)->id - (*bp)->id; 1237 if (l == 0L) 1238 return (0); 1239 else 1240 return ((l > 0) ? 1:-1); 1241} 1242 1243/** return a STACK of the ciphers available for the SSL and in order of 1244 * preference */ 1245STACK_OF(SSL_CIPHER) * 1246SSL_get_ciphers(const SSL *s) 1247{ 1248 if (s != NULL) { 1249 if (s->cipher_list != NULL) { 1250 return (s->cipher_list); 1251 } else if ((s->ctx != NULL) && 1252 (s->ctx->cipher_list != NULL)) { 1253 return (s->ctx->cipher_list); 1254 } 1255 } 1256 return (NULL); 1257} 1258 1259/** return a STACK of the ciphers available for the SSL and in order of 1260 * algorithm id */ 1261STACK_OF(SSL_CIPHER) * 1262ssl_get_ciphers_by_id(SSL *s) 1263{ 1264 if (s != NULL) { 1265 if (s->cipher_list_by_id != NULL) { 1266 return (s->cipher_list_by_id); 1267 } else if ((s->ctx != NULL) && 1268 (s->ctx->cipher_list_by_id != NULL)) { 1269 return (s->ctx->cipher_list_by_id); 1270 } 1271 } 1272 return (NULL); 1273} 1274 1275/** The old interface to get the same thing as SSL_get_ciphers() */ 1276const char * 1277SSL_get_cipher_list(const SSL *s, int n) 1278{ 1279 SSL_CIPHER *c; 1280 STACK_OF(SSL_CIPHER) *sk; 1281 1282 if (s == NULL) 1283 return (NULL); 1284 sk = SSL_get_ciphers(s); 1285 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1286 return (NULL); 1287 c = sk_SSL_CIPHER_value(sk, n); 1288 if (c == NULL) 1289 return (NULL); 1290 return (c->name); 1291} 1292 1293/** specify the ciphers to be used by default by the SSL_CTX */ 1294int 1295SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1296{ 1297 STACK_OF(SSL_CIPHER) *sk; 1298 1299 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1300 &ctx->cipher_list_by_id, str); 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 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) || 1346 (len < 2)) 1347 return (NULL); 1348 1349 sk = s->session->ciphers; 1350 buf[0] = '\0'; 1351 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1352 c = sk_SSL_CIPHER_value(sk, i); 1353 end = buf + curlen; 1354 if (strlcat(buf, c->name, len) >= len || 1355 (curlen = strlcat(buf, ":", len)) >= len) { 1356 /* remove truncated cipher from list */ 1357 *end = '\0'; 1358 break; 1359 } 1360 } 1361 /* remove trailing colon */ 1362 if ((end = strrchr(buf, ':')) != NULL) 1363 *end = '\0'; 1364 return (buf); 1365} 1366 1367int 1368ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1369 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1370{ 1371 int i, j = 0; 1372 SSL_CIPHER *c; 1373 unsigned char *q; 1374#ifndef OPENSSL_NO_KRB5 1375 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1376#endif /* OPENSSL_NO_KRB5 */ 1377 1378 if (sk == NULL) 1379 return (0); 1380 q = p; 1381 1382 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1383 c = sk_SSL_CIPHER_value(sk, i); 1384 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1385 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1386 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1387 continue; 1388#ifndef OPENSSL_NO_KRB5 1389 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1390 nokrb5) 1391 continue; 1392#endif /* OPENSSL_NO_KRB5 */ 1393#ifndef OPENSSL_NO_PSK 1394 /* with PSK there must be client callback set */ 1395 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1396 s->psk_client_callback == NULL) 1397 continue; 1398#endif /* OPENSSL_NO_PSK */ 1399 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1400 p += j; 1401 } 1402 /* If p == q, no ciphers and caller indicates an error. Otherwise 1403 * add SCSV if not renegotiating. 1404 */ 1405 if (p != q && !s->renegotiate) { 1406 static SSL_CIPHER scsv = { 1407 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1408 }; 1409 j = put_cb ? put_cb(&scsv, p) : ssl_put_cipher_by_char(s, &scsv, p); 1410 p += j; 1411#ifdef OPENSSL_RI_DEBUG 1412 fprintf(stderr, "SCSV sent by client\n"); 1413#endif 1414 } 1415 1416 return (p - q); 1417} 1418 1419STACK_OF(SSL_CIPHER) * 1420ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1421 STACK_OF(SSL_CIPHER) **skp) 1422{ 1423 const SSL_CIPHER *c; 1424 STACK_OF(SSL_CIPHER) *sk; 1425 int i, n; 1426 if (s->s3) 1427 s->s3->send_connection_binding = 0; 1428 1429 n = ssl_put_cipher_by_char(s, NULL, NULL); 1430 if ((num % n) != 0) { 1431 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1432 return (NULL); 1433 } 1434 if ((skp == NULL) || (*skp == NULL)) 1435 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1436 else { 1437 sk= *skp; 1438 sk_SSL_CIPHER_zero(sk); 1439 } 1440 1441 for (i = 0; i < num; i += n) { 1442 /* Check for SCSV */ 1443 if (s->s3 && (n != 3 || !p[0]) && 1444 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1445 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1446 /* SCSV fatal if renegotiating */ 1447 if (s->renegotiate) { 1448 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1449 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1450 1451 goto err; 1452 } 1453 s->s3->send_connection_binding = 1; 1454 p += n; 1455#ifdef OPENSSL_RI_DEBUG 1456 fprintf(stderr, "SCSV received by server\n"); 1457#endif 1458 continue; 1459 } 1460 1461 c = ssl_get_cipher_by_char(s, p); 1462 p += n; 1463 if (c != NULL) { 1464 if (!sk_SSL_CIPHER_push(sk, c)) { 1465 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1466 goto err; 1467 } 1468 } 1469 } 1470 1471 if (skp != NULL) 1472 *skp = sk; 1473 return (sk); 1474err: 1475 if ((skp == NULL) || (*skp == NULL)) 1476 sk_SSL_CIPHER_free(sk); 1477 return (NULL); 1478} 1479 1480 1481#ifndef OPENSSL_NO_TLSEXT 1482/** return a servername extension value if provided in Client Hello, or NULL. 1483 * So far, only host_name types are defined (RFC 3546). 1484 */ 1485 1486const char * 1487SSL_get_servername(const SSL *s, const int type) 1488{ 1489 if (type != TLSEXT_NAMETYPE_host_name) 1490 return NULL; 1491 1492 return s->session && !s->tlsext_hostname ? 1493 s->session->tlsext_hostname : 1494 s->tlsext_hostname; 1495} 1496 1497int 1498SSL_get_servername_type(const SSL *s) 1499{ 1500 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1501 return TLSEXT_NAMETYPE_host_name; 1502 return -1; 1503} 1504 1505# ifndef OPENSSL_NO_NEXTPROTONEG 1506/* SSL_select_next_proto implements the standard protocol selection. It is 1507 * expected that this function is called from the callback set by 1508 * SSL_CTX_set_next_proto_select_cb. 1509 * 1510 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1511 * strings. The length byte itself is not included in the length. A byte 1512 * string of length 0 is invalid. No byte string may be truncated. 1513 * 1514 * The current, but experimental algorithm for selecting the protocol is: 1515 * 1516 * 1) If the server doesn't support NPN then this is indicated to the 1517 * callback. In this case, the client application has to abort the connection 1518 * or have a default application level protocol. 1519 * 1520 * 2) If the server supports NPN, but advertises an empty list then the 1521 * client selects the first protcol in its list, but indicates via the 1522 * API that this fallback case was enacted. 1523 * 1524 * 3) Otherwise, the client finds the first protocol in the server's list 1525 * that it supports and selects this protocol. This is because it's 1526 * assumed that the server has better information about which protocol 1527 * a client should use. 1528 * 1529 * 4) If the client doesn't support any of the server's advertised 1530 * protocols, then this is treated the same as case 2. 1531 * 1532 * It returns either 1533 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1534 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1535 */ 1536int 1537SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len) 1538{ 1539 unsigned int i, j; 1540 const unsigned char *result; 1541 int status = OPENSSL_NPN_UNSUPPORTED; 1542 1543 /* For each protocol in server preference order, see if we support it. */ 1544 for (i = 0; i < server_len; ) { 1545 for (j = 0; j < client_len; ) { 1546 if (server[i] == client[j] && 1547 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1548 /* We found a match */ 1549 result = &server[i]; 1550 status = OPENSSL_NPN_NEGOTIATED; 1551 goto found; 1552 } 1553 j += client[j]; 1554 j++; 1555 } 1556 i += server[i]; 1557 i++; 1558 } 1559 1560 /* There's no overlap between our protocols and the server's list. */ 1561 result = client; 1562 status = OPENSSL_NPN_NO_OVERLAP; 1563 1564 found: 1565 *out = (unsigned char *) result + 1; 1566 *outlen = result[0]; 1567 return status; 1568} 1569 1570/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1571 * requested protocol for this connection and returns 0. If the client didn't 1572 * request any protocol, then *data is set to NULL. 1573 * 1574 * Note that the client can request any protocol it chooses. The value returned 1575 * from this function need not be a member of the list of supported protocols 1576 * provided by the callback. 1577 */ 1578void 1579SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1580{ 1581 *data = s->next_proto_negotiated; 1582 if (!*data) { 1583 *len = 0; 1584 } else { 1585 *len = s->next_proto_negotiated_len; 1586 } 1587} 1588 1589/* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1590 * TLS server needs a list of supported protocols for Next Protocol 1591 * Negotiation. The returned list must be in wire format. The list is returned 1592 * by setting |out| to point to it and |outlen| to its length. This memory will 1593 * not be modified, but one should assume that the SSL* keeps a reference to 1594 * it. 1595 * 1596 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1597 * such extension will be included in the ServerHello. */ 1598void 1599SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1600{ 1601 ctx->next_protos_advertised_cb = cb; 1602 ctx->next_protos_advertised_cb_arg = arg; 1603} 1604 1605/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1606 * client needs to select a protocol from the server's provided list. |out| 1607 * must be set to point to the selected protocol (which may be within |in|). 1608 * The length of the protocol name must be written into |outlen|. The server's 1609 * advertised protocols are provided in |in| and |inlen|. The callback can 1610 * assume that |in| is syntactically valid. 1611 * 1612 * The client must select a protocol. It is fatal to the connection if this 1613 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1614 */ 1615void 1616SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1617{ 1618 ctx->next_proto_select_cb = cb; 1619 ctx->next_proto_select_cb_arg = arg; 1620} 1621# endif 1622#endif 1623 1624int 1625SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1626 const char *label, size_t llen, const unsigned char *p, size_t plen, 1627int use_context) 1628{ 1629 if (s->version < TLS1_VERSION) 1630 return -1; 1631 1632 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1633 llen, p, plen, 1634 use_context); 1635} 1636 1637static unsigned long 1638ssl_session_hash(const SSL_SESSION *a) 1639{ 1640 unsigned long l; 1641 1642 l = (unsigned long) 1643 ((unsigned int) a->session_id[0] )| 1644 ((unsigned int) a->session_id[1]<< 8L)| 1645 ((unsigned long)a->session_id[2]<<16L)| 1646 ((unsigned long)a->session_id[3]<<24L); 1647 return (l); 1648} 1649 1650/* NB: If this function (or indeed the hash function which uses a sort of 1651 * coarser function than this one) is changed, ensure 1652 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1653 * able to construct an SSL_SESSION that will collide with any existing session 1654 * with a matching session ID. */ 1655static int 1656ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1657{ 1658 if (a->ssl_version != b->ssl_version) 1659 return (1); 1660 if (a->session_id_length != b->session_id_length) 1661 return (1); 1662 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1663} 1664 1665/* These wrapper functions should remain rather than redeclaring 1666 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1667 * variable. The reason is that the functions aren't static, they're exposed via 1668 * ssl.h. */ 1669static 1670IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1671static 1672IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1673 1674SSL_CTX * 1675SSL_CTX_new(const SSL_METHOD *meth) 1676{ 1677 SSL_CTX *ret = NULL; 1678 1679 if (meth == NULL) { 1680 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1681 return (NULL); 1682 } 1683 1684 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1685 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1686 goto err; 1687 } 1688 ret = (SSL_CTX *)malloc(sizeof(SSL_CTX)); 1689 if (ret == NULL) 1690 goto err; 1691 1692 memset(ret, 0, sizeof(SSL_CTX)); 1693 1694 ret->method = meth; 1695 1696 ret->cert_store = NULL; 1697 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1698 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1699 ret->session_cache_head = NULL; 1700 ret->session_cache_tail = NULL; 1701 1702 /* We take the system default */ 1703 ret->session_timeout = meth->get_timeout(); 1704 1705 ret->new_session_cb = 0; 1706 ret->remove_session_cb = 0; 1707 ret->get_session_cb = 0; 1708 ret->generate_session_id = 0; 1709 1710 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1711 1712 ret->references = 1; 1713 ret->quiet_shutdown = 0; 1714 1715/* ret->cipher=NULL; 1716 ret->master_key=NULL; 1717*/ 1718 1719 ret->info_callback = NULL; 1720 1721 ret->app_verify_callback = 0; 1722 ret->app_verify_arg = NULL; 1723 1724 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1725 ret->read_ahead = 0; 1726 ret->msg_callback = 0; 1727 ret->msg_callback_arg = NULL; 1728 ret->verify_mode = SSL_VERIFY_NONE; 1729#if 0 1730 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1731#endif 1732 ret->sid_ctx_length = 0; 1733 ret->default_verify_callback = NULL; 1734 if ((ret->cert = ssl_cert_new()) == NULL) 1735 goto err; 1736 1737 ret->default_passwd_callback = 0; 1738 ret->default_passwd_callback_userdata = NULL; 1739 ret->client_cert_cb = 0; 1740 ret->app_gen_cookie_cb = 0; 1741 ret->app_verify_cookie_cb = 0; 1742 1743 ret->sessions = lh_SSL_SESSION_new(); 1744 if (ret->sessions == NULL) 1745 goto err; 1746 ret->cert_store = X509_STORE_new(); 1747 if (ret->cert_store == NULL) 1748 goto err; 1749 1750 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1751 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1752 if (ret->cipher_list == NULL || 1753 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1754 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1755 goto err2; 1756 } 1757 1758 ret->param = X509_VERIFY_PARAM_new(); 1759 if (!ret->param) 1760 goto err; 1761 1762 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1763 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1764 goto err2; 1765 } 1766 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1767 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1768 goto err2; 1769 } 1770 1771 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1772 goto err; 1773 1774 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1775 1776 ret->extra_certs = NULL; 1777 /* No compression for DTLS */ 1778 if (meth->version != DTLS1_VERSION) 1779 ret->comp_methods = SSL_COMP_get_compression_methods(); 1780 1781 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1782 1783#ifndef OPENSSL_NO_TLSEXT 1784 ret->tlsext_servername_callback = 0; 1785 ret->tlsext_servername_arg = NULL; 1786 /* Setup RFC4507 ticket keys */ 1787 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1788 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1789 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1790 ret->options |= SSL_OP_NO_TICKET; 1791 1792 ret->tlsext_status_cb = 0; 1793 ret->tlsext_status_arg = NULL; 1794 1795# ifndef OPENSSL_NO_NEXTPROTONEG 1796 ret->next_protos_advertised_cb = 0; 1797 ret->next_proto_select_cb = 0; 1798# endif 1799#endif 1800#ifndef OPENSSL_NO_PSK 1801 ret->psk_identity_hint = NULL; 1802 ret->psk_client_callback = NULL; 1803 ret->psk_server_callback = NULL; 1804#endif 1805#ifndef OPENSSL_NO_SRP 1806 SSL_CTX_SRP_CTX_init(ret); 1807#endif 1808#ifndef OPENSSL_NO_ENGINE 1809 ret->client_cert_engine = NULL; 1810#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1811#define eng_strx(x) #x 1812#define eng_str(x) eng_strx(x) 1813 /* Use specific client engine automatically... ignore errors */ 1814 { 1815 ENGINE *eng; 1816 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1817 if (!eng) { 1818 ERR_clear_error(); 1819 ENGINE_load_builtin_engines(); 1820 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1821 } 1822 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1823 ERR_clear_error(); 1824 } 1825#endif 1826#endif 1827 /* Default is to connect to non-RI servers. When RI is more widely 1828 * deployed might change this. 1829 */ 1830 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1831 1832 return (ret); 1833err: 1834 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1835err2: 1836 if (ret != NULL) 1837 SSL_CTX_free(ret); 1838 return (NULL); 1839} 1840 1841#if 0 1842static void 1843SSL_COMP_free(SSL_COMP *comp) 1844 { free(comp); 1845} 1846#endif 1847 1848void 1849SSL_CTX_free(SSL_CTX *a) 1850{ 1851 int i; 1852 1853 if (a == NULL) 1854 return; 1855 1856 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1857 if (i > 0) 1858 return; 1859 1860 if (a->param) 1861 X509_VERIFY_PARAM_free(a->param); 1862 1863 /* 1864 * Free internal session cache. However: the remove_cb() may reference 1865 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1866 * after the sessions were flushed. 1867 * As the ex_data handling routines might also touch the session cache, 1868 * the most secure solution seems to be: empty (flush) the cache, then 1869 * free ex_data, then finally free the cache. 1870 * (See ticket [openssl.org #212].) 1871 */ 1872 if (a->sessions != NULL) 1873 SSL_CTX_flush_sessions(a, 0); 1874 1875 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1876 1877 if (a->sessions != NULL) 1878 lh_SSL_SESSION_free(a->sessions); 1879 1880 if (a->cert_store != NULL) 1881 X509_STORE_free(a->cert_store); 1882 if (a->cipher_list != NULL) 1883 sk_SSL_CIPHER_free(a->cipher_list); 1884 if (a->cipher_list_by_id != NULL) 1885 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1886 if (a->cert != NULL) 1887 ssl_cert_free(a->cert); 1888 if (a->client_CA != NULL) 1889 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1890 if (a->extra_certs != NULL) 1891 sk_X509_pop_free(a->extra_certs, X509_free); 1892#if 0 /* This should never be done, since it removes a global database */ 1893 if (a->comp_methods != NULL) 1894 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1895#else 1896 a->comp_methods = NULL; 1897#endif 1898 1899#ifndef OPENSSL_NO_SRTP 1900 if (a->srtp_profiles) 1901 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1902#endif 1903 1904#ifndef OPENSSL_NO_PSK 1905 if (a->psk_identity_hint) 1906 free(a->psk_identity_hint); 1907#endif 1908#ifndef OPENSSL_NO_SRP 1909 SSL_CTX_SRP_CTX_free(a); 1910#endif 1911#ifndef OPENSSL_NO_ENGINE 1912 if (a->client_cert_engine) 1913 ENGINE_finish(a->client_cert_engine); 1914#endif 1915 1916 free(a); 1917} 1918 1919void 1920SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1921{ 1922 ctx->default_passwd_callback = cb; 1923} 1924 1925void 1926SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1927{ 1928 ctx->default_passwd_callback_userdata = u; 1929} 1930 1931void 1932SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, void *), void *arg) 1933{ 1934 ctx->app_verify_callback = cb; 1935 ctx->app_verify_arg = arg; 1936} 1937 1938void 1939SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1940{ 1941 ctx->verify_mode = mode; 1942 ctx->default_verify_callback = cb; 1943} 1944 1945void 1946SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1947{ 1948 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1949} 1950 1951void 1952ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1953{ 1954 CERT_PKEY *cpk; 1955 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 1956 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 1957 int rsa_tmp_export, dh_tmp_export, kl; 1958 unsigned long mask_k, mask_a, emask_k, emask_a; 1959 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1960#ifndef OPENSSL_NO_ECDH 1961 int have_ecdh_tmp; 1962#endif 1963 X509 *x = NULL; 1964 EVP_PKEY *ecc_pkey = NULL; 1965 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1966 1967 if (c == NULL) 1968 return; 1969 1970 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 1971 1972 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1973 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 1974 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1975#ifndef OPENSSL_NO_DH 1976 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1977 dh_tmp_export = (c->dh_tmp_cb != NULL || 1978 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1979#else 1980 dh_tmp = dh_tmp_export = 0; 1981#endif 1982 1983#ifndef OPENSSL_NO_ECDH 1984 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1985#endif 1986 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1987 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1988 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1989 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1990 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1991 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1992 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1993 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 1994 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1995 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1996 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 1997/* FIX THIS EAY EAY EAY */ 1998 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1999 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2000 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2001 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2002 mask_k = 0; 2003 mask_a = 0; 2004 emask_k = 0; 2005 emask_a = 0; 2006 2007 2008 2009#ifdef CIPHER_DEBUG 2010 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2011 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, 2012 rsa_enc, rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2013#endif 2014 2015 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2016 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2017 mask_k |= SSL_kGOST; 2018 mask_a |= SSL_aGOST01; 2019 } 2020 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2021 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2022 mask_k |= SSL_kGOST; 2023 mask_a |= SSL_aGOST94; 2024 } 2025 2026 if (rsa_enc || (rsa_tmp && rsa_sign)) 2027 mask_k|=SSL_kRSA; 2028 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2029 emask_k|=SSL_kRSA; 2030 2031#if 0 2032 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2033 if ((dh_tmp || dh_rsa || dh_dsa) && 2034 (rsa_enc || rsa_sign || dsa_sign)) 2035 mask_k|=SSL_kEDH; 2036 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2037 (rsa_enc || rsa_sign || dsa_sign)) 2038 emask_k|=SSL_kEDH; 2039#endif 2040 2041 if (dh_tmp_export) 2042 emask_k|=SSL_kEDH; 2043 2044 if (dh_tmp) 2045 mask_k|=SSL_kEDH; 2046 2047 if (dh_rsa) 2048 mask_k|=SSL_kDHr; 2049 if (dh_rsa_export) 2050 emask_k|=SSL_kDHr; 2051 2052 if (dh_dsa) 2053 mask_k|=SSL_kDHd; 2054 if (dh_dsa_export) 2055 emask_k|=SSL_kDHd; 2056 2057 if (rsa_enc || rsa_sign) { 2058 mask_a|=SSL_aRSA; 2059 emask_a|=SSL_aRSA; 2060 } 2061 2062 if (dsa_sign) { 2063 mask_a|=SSL_aDSS; 2064 emask_a|=SSL_aDSS; 2065 } 2066 2067 mask_a|=SSL_aNULL; 2068 emask_a|=SSL_aNULL; 2069 2070#ifndef OPENSSL_NO_KRB5 2071 mask_k|=SSL_kKRB5; 2072 mask_a|=SSL_aKRB5; 2073 emask_k|=SSL_kKRB5; 2074 emask_a|=SSL_aKRB5; 2075#endif 2076 2077 /* An ECC certificate may be usable for ECDH and/or 2078 * ECDSA cipher suites depending on the key usage extension. 2079 */ 2080 if (have_ecc_cert) { 2081 /* This call populates extension flags (ex_flags) */ 2082 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2083 X509_check_purpose(x, -1, 0); 2084 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2085 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2086 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2087 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2088 ecc_pkey = X509_get_pubkey(x); 2089 ecc_pkey_size = (ecc_pkey != NULL) ? 2090 EVP_PKEY_bits(ecc_pkey) : 0; 2091 EVP_PKEY_free(ecc_pkey); 2092 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2093 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2094 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2095 } 2096#ifndef OPENSSL_NO_ECDH 2097 if (ecdh_ok) { 2098 2099 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2100 mask_k|=SSL_kECDHr; 2101 mask_a|=SSL_aECDH; 2102 if (ecc_pkey_size <= 163) { 2103 emask_k|=SSL_kECDHr; 2104 emask_a|=SSL_aECDH; 2105 } 2106 } 2107 2108 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2109 mask_k|=SSL_kECDHe; 2110 mask_a|=SSL_aECDH; 2111 if (ecc_pkey_size <= 163) { 2112 emask_k|=SSL_kECDHe; 2113 emask_a|=SSL_aECDH; 2114 } 2115 } 2116 } 2117#endif 2118#ifndef OPENSSL_NO_ECDSA 2119 if (ecdsa_ok) { 2120 mask_a|=SSL_aECDSA; 2121 emask_a|=SSL_aECDSA; 2122 } 2123#endif 2124 } 2125 2126#ifndef OPENSSL_NO_ECDH 2127 if (have_ecdh_tmp) { 2128 mask_k|=SSL_kEECDH; 2129 emask_k|=SSL_kEECDH; 2130 } 2131#endif 2132 2133#ifndef OPENSSL_NO_PSK 2134 mask_k |= SSL_kPSK; 2135 mask_a |= SSL_aPSK; 2136 emask_k |= SSL_kPSK; 2137 emask_a |= SSL_aPSK; 2138#endif 2139 2140 c->mask_k = mask_k; 2141 c->mask_a = mask_a; 2142 c->export_mask_k = emask_k; 2143 c->export_mask_a = emask_a; 2144 c->valid = 1; 2145} 2146 2147/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2148#define ku_reject(x, usage) \ 2149 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2150 2151#ifndef OPENSSL_NO_EC 2152 2153int 2154ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2155{ 2156 unsigned long alg_k, alg_a; 2157 EVP_PKEY *pkey = NULL; 2158 int keysize = 0; 2159 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2160 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2161 2162 alg_k = cs->algorithm_mkey; 2163 alg_a = cs->algorithm_auth; 2164 2165 if (SSL_C_IS_EXPORT(cs)) { 2166 /* ECDH key length in export ciphers must be <= 163 bits */ 2167 pkey = X509_get_pubkey(x); 2168 if (pkey == NULL) 2169 return 0; 2170 keysize = EVP_PKEY_bits(pkey); 2171 EVP_PKEY_free(pkey); 2172 if (keysize > 163) 2173 return 0; 2174 } 2175 2176 /* This call populates the ex_flags field correctly */ 2177 X509_check_purpose(x, -1, 0); 2178 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2179 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2180 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2181 } 2182 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2183 /* key usage, if present, must allow key agreement */ 2184 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2185 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2186 return 0; 2187 } 2188 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2189 /* signature alg must be ECDSA */ 2190 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2191 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2192 return 0; 2193 } 2194 } 2195 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2196 /* signature alg must be RSA */ 2197 2198 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2199 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2200 return 0; 2201 } 2202 } 2203 } 2204 if (alg_a & SSL_aECDSA) { 2205 /* key usage, if present, must allow signing */ 2206 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2207 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2208 return 0; 2209 } 2210 } 2211 2212 return 1; 2213 /* all checks are ok */ 2214} 2215 2216#endif 2217 2218/* THIS NEEDS CLEANING UP */ 2219CERT_PKEY * 2220ssl_get_server_send_pkey(const SSL *s) 2221{ 2222 unsigned long alg_k, alg_a; 2223 CERT *c; 2224 int i; 2225 2226 c = s->cert; 2227 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2228 2229 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2230 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2231 2232 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2233 /* we don't need to look at SSL_kEECDH 2234 * since no certificate is needed for 2235 * anon ECDH and for authenticated 2236 * EECDH, the check for the auth 2237 * algorithm will set i correctly 2238 * NOTE: For ECDH-RSA, we need an ECC 2239 * not an RSA cert but for EECDH-RSA 2240 * we need an RSA cert. Placing the 2241 * checks for SSL_kECDH before RSA 2242 * checks ensures the correct cert is chosen. 2243 */ 2244 i = SSL_PKEY_ECC; 2245 } else if (alg_a & SSL_aECDSA) { 2246 i = SSL_PKEY_ECC; 2247 } else if (alg_k & SSL_kDHr) 2248 i = SSL_PKEY_DH_RSA; 2249 else if (alg_k & SSL_kDHd) 2250 i = SSL_PKEY_DH_DSA; 2251 else if (alg_a & SSL_aDSS) 2252 i = SSL_PKEY_DSA_SIGN; 2253 else if (alg_a & SSL_aRSA) { 2254 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2255 i = SSL_PKEY_RSA_SIGN; 2256 else 2257 i = SSL_PKEY_RSA_ENC; 2258 } else if (alg_a & SSL_aKRB5) { 2259 /* VRS something else here? */ 2260 return (NULL); 2261 } else if (alg_a & SSL_aGOST94) 2262 i = SSL_PKEY_GOST94; 2263 else if (alg_a & SSL_aGOST01) 2264 i = SSL_PKEY_GOST01; 2265 else /* if (alg_a & SSL_aNULL) */ 2266 { 2267 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2268 return (NULL); 2269 } 2270 2271 return c->pkeys + i; 2272} 2273 2274X509 * 2275ssl_get_server_send_cert(const SSL *s) 2276{ 2277 CERT_PKEY *cpk; 2278 cpk = ssl_get_server_send_pkey(s); 2279 if (!cpk) 2280 return NULL; 2281 return cpk->x509; 2282} 2283 2284EVP_PKEY * 2285ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2286{ 2287 unsigned long alg_a; 2288 CERT *c; 2289 int idx = -1; 2290 2291 alg_a = cipher->algorithm_auth; 2292 c = s->cert; 2293 2294 if ((alg_a & SSL_aDSS) && 2295 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2296 idx = SSL_PKEY_DSA_SIGN; 2297 else if (alg_a & SSL_aRSA) { 2298 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2299 idx = SSL_PKEY_RSA_SIGN; 2300 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2301 idx = SSL_PKEY_RSA_ENC; 2302 } else if ((alg_a & SSL_aECDSA) && 2303 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2304 idx = SSL_PKEY_ECC; 2305 if (idx == -1) { 2306 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2307 return (NULL); 2308 } 2309 if (pmd) 2310 *pmd = c->pkeys[idx].digest; 2311 return c->pkeys[idx].privatekey; 2312} 2313 2314void 2315ssl_update_cache(SSL *s, int mode) 2316{ 2317 int i; 2318 2319 /* If the session_id_length is 0, we are not supposed to cache it, 2320 * and it would be rather hard to do anyway :-) */ 2321 if (s->session->session_id_length == 0) 2322 return; 2323 2324 i = s->session_ctx->session_cache_mode; 2325 if ((i & mode) && (!s->hit) 2326 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2327 || SSL_CTX_add_session(s->session_ctx, s->session)) 2328 && (s->session_ctx->new_session_cb != NULL)) { 2329 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2330 if (!s->session_ctx->new_session_cb(s, s->session)) 2331 SSL_SESSION_free(s->session); 2332 } 2333 2334 /* auto flush every 255 connections */ 2335 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2336 ((i & mode) == mode)) { 2337 if ((((mode & SSL_SESS_CACHE_CLIENT) 2338 ?s->session_ctx->stats.sess_connect_good 2339 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2340 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2341 } 2342 } 2343} 2344 2345const SSL_METHOD * 2346SSL_get_ssl_method(SSL *s) 2347{ 2348 return (s->method); 2349} 2350 2351int 2352SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2353{ 2354 int conn = -1; 2355 int ret = 1; 2356 2357 if (s->method != meth) { 2358 if (s->handshake_func != NULL) 2359 conn = (s->handshake_func == s->method->ssl_connect); 2360 2361 if (s->method->version == meth->version) 2362 s->method = meth; 2363 else { 2364 s->method->ssl_free(s); 2365 s->method = meth; 2366 ret = s->method->ssl_new(s); 2367 } 2368 2369 if (conn == 1) 2370 s->handshake_func = meth->ssl_connect; 2371 else if (conn == 0) 2372 s->handshake_func = meth->ssl_accept; 2373 } 2374 return (ret); 2375} 2376 2377int 2378SSL_get_error(const SSL *s, int i) 2379{ 2380 int reason; 2381 unsigned long l; 2382 BIO *bio; 2383 2384 if (i > 0) 2385 return (SSL_ERROR_NONE); 2386 2387 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2388 * etc, where we do encode the error */ 2389 if ((l = ERR_peek_error()) != 0) { 2390 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2391 return (SSL_ERROR_SYSCALL); 2392 else 2393 return (SSL_ERROR_SSL); 2394 } 2395 2396 if ((i < 0) && SSL_want_read(s)) { 2397 bio = SSL_get_rbio(s); 2398 if (BIO_should_read(bio)) 2399 return (SSL_ERROR_WANT_READ); 2400 else if (BIO_should_write(bio)) 2401 /* 2402 * This one doesn't make too much sense... We never 2403 * try to write to the rbio, and an application 2404 * program where rbio and wbio are separate couldn't 2405 * even know what it should wait for. However if we 2406 * ever set s->rwstate incorrectly (so that we have 2407 * SSL_want_read(s) instead of SSL_want_write(s)) 2408 * and rbio and wbio *are* the same, this test works 2409 * around that bug; so it might be safer to keep it. 2410 */ 2411 return (SSL_ERROR_WANT_WRITE); 2412 else if (BIO_should_io_special(bio)) { 2413 reason = BIO_get_retry_reason(bio); 2414 if (reason == BIO_RR_CONNECT) 2415 return (SSL_ERROR_WANT_CONNECT); 2416 else if (reason == BIO_RR_ACCEPT) 2417 return (SSL_ERROR_WANT_ACCEPT); 2418 else 2419 return(SSL_ERROR_SYSCALL); /* unknown */ 2420 } 2421 } 2422 2423 if ((i < 0) && SSL_want_write(s)) { 2424 bio = SSL_get_wbio(s); 2425 if (BIO_should_write(bio)) 2426 return (SSL_ERROR_WANT_WRITE); 2427 else if (BIO_should_read(bio)) 2428 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2429 return (SSL_ERROR_WANT_READ); 2430 else if (BIO_should_io_special(bio)) { 2431 reason = BIO_get_retry_reason(bio); 2432 if (reason == BIO_RR_CONNECT) 2433 return (SSL_ERROR_WANT_CONNECT); 2434 else if (reason == BIO_RR_ACCEPT) 2435 return (SSL_ERROR_WANT_ACCEPT); 2436 else 2437 return (SSL_ERROR_SYSCALL); 2438 } 2439 } 2440 if ((i < 0) && SSL_want_x509_lookup(s)) { 2441 return (SSL_ERROR_WANT_X509_LOOKUP); 2442 } 2443 2444 if (i == 0) { 2445 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2446 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2447 return (SSL_ERROR_ZERO_RETURN); 2448 } 2449 return (SSL_ERROR_SYSCALL); 2450} 2451 2452int 2453SSL_do_handshake(SSL *s) 2454{ 2455 int ret = 1; 2456 2457 if (s->handshake_func == NULL) { 2458 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2459 return (-1); 2460 } 2461 2462 s->method->ssl_renegotiate_check(s); 2463 2464 if (SSL_in_init(s) || SSL_in_before(s)) { 2465 ret = s->handshake_func(s); 2466 } 2467 return (ret); 2468} 2469 2470/* For the next 2 functions, SSL_clear() sets shutdown and so 2471 * one of these calls will reset it */ 2472void 2473SSL_set_accept_state(SSL *s) 2474{ 2475 s->server = 1; 2476 s->shutdown = 0; 2477 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2478 s->handshake_func = s->method->ssl_accept; 2479 /* clear the current cipher */ 2480 ssl_clear_cipher_ctx(s); 2481 ssl_clear_hash_ctx(&s->read_hash); 2482 ssl_clear_hash_ctx(&s->write_hash); 2483} 2484 2485void 2486SSL_set_connect_state(SSL *s) 2487{ 2488 s->server = 0; 2489 s->shutdown = 0; 2490 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2491 s->handshake_func = s->method->ssl_connect; 2492 /* clear the current cipher */ 2493 ssl_clear_cipher_ctx(s); 2494 ssl_clear_hash_ctx(&s->read_hash); 2495 ssl_clear_hash_ctx(&s->write_hash); 2496} 2497 2498int 2499ssl_undefined_function(SSL *s) 2500{ 2501 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2502 return (0); 2503} 2504 2505int 2506ssl_undefined_void_function(void) 2507{ 2508 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2509 return (0); 2510} 2511 2512int 2513ssl_undefined_const_function(const SSL *s) 2514{ 2515 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2516 return (0); 2517} 2518 2519SSL_METHOD * 2520ssl_bad_method(int ver) 2521{ 2522 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2523 return (NULL); 2524} 2525 2526const char * 2527SSL_get_version(const SSL *s) 2528{ 2529 if (s->version == TLS1_2_VERSION) 2530 return("TLSv1.2"); 2531 else if (s->version == TLS1_1_VERSION) 2532 return("TLSv1.1"); 2533 else if (s->version == TLS1_VERSION) 2534 return("TLSv1"); 2535 else if (s->version == SSL3_VERSION) 2536 return("SSLv3"); 2537 else 2538 return("unknown"); 2539} 2540 2541SSL * 2542SSL_dup(SSL *s) 2543{ 2544 STACK_OF(X509_NAME) *sk; 2545 X509_NAME *xn; 2546 SSL *ret; 2547 int i; 2548 2549 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2550 return (NULL); 2551 2552 ret->version = s->version; 2553 ret->type = s->type; 2554 ret->method = s->method; 2555 2556 if (s->session != NULL) { 2557 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2558 SSL_copy_session_id(ret, s); 2559 } else { 2560 /* No session has been established yet, so we have to expect 2561 * that s->cert or ret->cert will be changed later -- 2562 * they should not both point to the same object, 2563 * and thus we can't use SSL_copy_session_id. */ 2564 2565 ret->method->ssl_free(ret); 2566 ret->method = s->method; 2567 ret->method->ssl_new(ret); 2568 2569 if (s->cert != NULL) { 2570 if (ret->cert != NULL) { 2571 ssl_cert_free(ret->cert); 2572 } 2573 ret->cert = ssl_cert_dup(s->cert); 2574 if (ret->cert == NULL) 2575 goto err; 2576 } 2577 2578 SSL_set_session_id_context(ret, 2579 s->sid_ctx, s->sid_ctx_length); 2580 } 2581 2582 ret->options = s->options; 2583 ret->mode = s->mode; 2584 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2585 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2586 ret->msg_callback = s->msg_callback; 2587 ret->msg_callback_arg = s->msg_callback_arg; 2588 SSL_set_verify(ret, SSL_get_verify_mode(s), 2589 SSL_get_verify_callback(s)); 2590 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2591 ret->generate_session_id = s->generate_session_id; 2592 2593 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2594 2595 ret->debug = s->debug; 2596 2597 /* copy app data, a little dangerous perhaps */ 2598 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2599 goto err; 2600 2601 /* setup rbio, and wbio */ 2602 if (s->rbio != NULL) { 2603 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2604 goto err; 2605 } 2606 if (s->wbio != NULL) { 2607 if (s->wbio != s->rbio) { 2608 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2609 goto err; 2610 } else 2611 ret->wbio = ret->rbio; 2612 } 2613 ret->rwstate = s->rwstate; 2614 ret->in_handshake = s->in_handshake; 2615 ret->handshake_func = s->handshake_func; 2616 ret->server = s->server; 2617 ret->renegotiate = s->renegotiate; 2618 ret->new_session = s->new_session; 2619 ret->quiet_shutdown = s->quiet_shutdown; 2620 ret->shutdown = s->shutdown; 2621 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2622 ret->rstate = s->rstate; 2623 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2624 ret->hit = s->hit; 2625 2626 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2627 2628 /* dup the cipher_list and cipher_list_by_id stacks */ 2629 if (s->cipher_list != NULL) { 2630 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2631 goto err; 2632 } 2633 if (s->cipher_list_by_id != NULL) 2634 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2635 == NULL) 2636 goto err; 2637 2638 /* Dup the client_CA list */ 2639 if (s->client_CA != NULL) { 2640 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2641 ret->client_CA = sk; 2642 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2643 xn = sk_X509_NAME_value(sk, i); 2644 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2645 X509_NAME_free(xn); 2646 goto err; 2647 } 2648 } 2649 } 2650 2651 if (0) { 2652err: 2653 if (ret != NULL) 2654 SSL_free(ret); 2655 ret = NULL; 2656 } 2657 return (ret); 2658} 2659 2660void 2661ssl_clear_cipher_ctx(SSL *s) 2662{ 2663 if (s->enc_read_ctx != NULL) { 2664 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2665 free(s->enc_read_ctx); 2666 s->enc_read_ctx = NULL; 2667 } 2668 if (s->enc_write_ctx != NULL) { 2669 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2670 free(s->enc_write_ctx); 2671 s->enc_write_ctx = NULL; 2672 } 2673#ifndef OPENSSL_NO_COMP 2674 if (s->expand != NULL) { 2675 COMP_CTX_free(s->expand); 2676 s->expand = NULL; 2677 } 2678 if (s->compress != NULL) { 2679 COMP_CTX_free(s->compress); 2680 s->compress = NULL; 2681 } 2682#endif 2683} 2684 2685/* Fix this function so that it takes an optional type parameter */ 2686X509 * 2687SSL_get_certificate(const SSL *s) 2688{ 2689 if (s->cert != NULL) 2690 return (s->cert->key->x509); 2691 else 2692 return (NULL); 2693} 2694 2695/* Fix this function so that it takes an optional type parameter */ 2696EVP_PKEY * 2697SSL_get_privatekey(SSL *s) 2698{ 2699 if (s->cert != NULL) 2700 return (s->cert->key->privatekey); 2701 else 2702 return (NULL); 2703} 2704 2705const SSL_CIPHER * 2706SSL_get_current_cipher(const SSL *s) 2707{ 2708 if ((s->session != NULL) && (s->session->cipher != NULL)) 2709 return (s->session->cipher); 2710 return (NULL); 2711} 2712#ifdef OPENSSL_NO_COMP 2713const void * 2714SSL_get_current_compression(SSL *s) 2715{ 2716 return NULL; 2717} 2718 2719const void * 2720SSL_get_current_expansion(SSL *s) 2721{ 2722 return NULL; 2723} 2724#else 2725 2726const COMP_METHOD * 2727SSL_get_current_compression(SSL *s) 2728{ 2729 if (s->compress != NULL) 2730 return (s->compress->meth); 2731 return (NULL); 2732} 2733 2734const COMP_METHOD * 2735SSL_get_current_expansion(SSL *s) 2736{ 2737 if (s->expand != NULL) 2738 return (s->expand->meth); 2739 return (NULL); 2740} 2741#endif 2742 2743int 2744ssl_init_wbio_buffer(SSL *s, int push) 2745{ 2746 BIO *bbio; 2747 2748 if (s->bbio == NULL) { 2749 bbio = BIO_new(BIO_f_buffer()); 2750 if (bbio == NULL) 2751 return (0); 2752 s->bbio = bbio; 2753 } else { 2754 bbio = s->bbio; 2755 if (s->bbio == s->wbio) 2756 s->wbio = BIO_pop(s->wbio); 2757 } 2758 (void)BIO_reset(bbio); 2759/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2760 if (!BIO_set_read_buffer_size(bbio, 1)) { 2761 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2762 return (0); 2763 } 2764 if (push) { 2765 if (s->wbio != bbio) 2766 s->wbio = BIO_push(bbio, s->wbio); 2767 } else { 2768 if (s->wbio == bbio) 2769 s->wbio = BIO_pop(bbio); 2770 } 2771 return (1); 2772} 2773 2774void 2775ssl_free_wbio_buffer(SSL *s) 2776{ 2777 if (s->bbio == NULL) 2778 return; 2779 2780 if (s->bbio == s->wbio) { 2781 /* remove buffering */ 2782 s->wbio = BIO_pop(s->wbio); 2783 } 2784 BIO_free(s->bbio); 2785 s->bbio = NULL; 2786} 2787 2788void 2789SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2790{ 2791 ctx->quiet_shutdown = mode; 2792} 2793 2794int 2795SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2796{ 2797 return (ctx->quiet_shutdown); 2798} 2799 2800void 2801SSL_set_quiet_shutdown(SSL *s, int mode) 2802{ 2803 s->quiet_shutdown = mode; 2804} 2805 2806int 2807SSL_get_quiet_shutdown(const SSL *s) 2808{ 2809 return (s->quiet_shutdown); 2810} 2811 2812void 2813SSL_set_shutdown(SSL *s, int mode) 2814{ 2815 s->shutdown = mode; 2816} 2817 2818int 2819SSL_get_shutdown(const SSL *s) 2820{ 2821 return (s->shutdown); 2822} 2823 2824int 2825SSL_version(const SSL *s) 2826{ 2827 return (s->version); 2828} 2829 2830SSL_CTX * 2831SSL_get_SSL_CTX(const SSL *ssl) 2832{ 2833 return (ssl->ctx); 2834} 2835 2836SSL_CTX * 2837SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2838{ 2839 if (ssl->ctx == ctx) 2840 return ssl->ctx; 2841#ifndef OPENSSL_NO_TLSEXT 2842 if (ctx == NULL) 2843 ctx = ssl->initial_ctx; 2844#endif 2845 if (ssl->cert != NULL) 2846 ssl_cert_free(ssl->cert); 2847 ssl->cert = ssl_cert_dup(ctx->cert); 2848 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2849 if (ssl->ctx != NULL) 2850 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2851 ssl->ctx = ctx; 2852 return (ssl->ctx); 2853} 2854 2855#ifndef OPENSSL_NO_STDIO 2856int 2857SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2858{ 2859 return (X509_STORE_set_default_paths(ctx->cert_store)); 2860} 2861 2862int 2863SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2864 const char *CApath) 2865{ 2866 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2867} 2868#endif 2869 2870void 2871SSL_set_info_callback(SSL *ssl, 2872 void (*cb)(const SSL *ssl, int type, int val)) 2873{ 2874 ssl->info_callback = cb; 2875} 2876 2877/* One compiler (Diab DCC) doesn't like argument names in returned 2878 function pointer. */ 2879void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2880{ 2881 return ssl->info_callback; 2882} 2883 2884int 2885SSL_state(const SSL *ssl) 2886{ 2887 return (ssl->state); 2888} 2889 2890void 2891SSL_set_state(SSL *ssl, int state) 2892{ 2893 ssl->state = state; 2894} 2895 2896void 2897SSL_set_verify_result(SSL *ssl, long arg) 2898{ 2899 ssl->verify_result = arg; 2900} 2901 2902long 2903SSL_get_verify_result(const SSL *ssl) 2904{ 2905 return (ssl->verify_result); 2906} 2907 2908int 2909SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2910 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2911{ 2912 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2913 new_func, dup_func, free_func); 2914} 2915 2916int 2917SSL_set_ex_data(SSL *s, int idx, void *arg) 2918{ 2919 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2920} 2921 2922void * 2923SSL_get_ex_data(const SSL *s, int idx) 2924{ 2925 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2926} 2927 2928int 2929SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2930 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2931{ 2932 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2933 new_func, dup_func, free_func); 2934} 2935 2936int 2937SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2938{ 2939 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2940} 2941 2942void * 2943SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2944{ 2945 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2946} 2947 2948int 2949ssl_ok(SSL *s) 2950{ 2951 return (1); 2952} 2953 2954X509_STORE * 2955SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2956{ 2957 return (ctx->cert_store); 2958} 2959 2960void 2961SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2962{ 2963 if (ctx->cert_store != NULL) 2964 X509_STORE_free(ctx->cert_store); 2965 ctx->cert_store = store; 2966} 2967 2968int 2969SSL_want(const SSL *s) 2970{ 2971 return (s->rwstate); 2972} 2973 2974/*! 2975 * \brief Set the callback for generating temporary RSA keys. 2976 * \param ctx the SSL context. 2977 * \param cb the callback 2978 */ 2979 2980void 2981SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 2982 int is_export, 2983int keylength)) 2984{ 2985 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2986} 2987 2988void 2989SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 2990 int is_export, 2991int keylength)) 2992{ 2993 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2994} 2995 2996#ifdef DOXYGEN 2997/*! 2998 * \brief The RSA temporary key callback function. 2999 * \param ssl the SSL session. 3000 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3001 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3002 * of the required key in bits. 3003 * \return the temporary RSA key. 3004 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3005 */ 3006 3007RSA * 3008cb(SSL *ssl, int is_export, int keylength) 3009{} 3010#endif 3011 3012/*! 3013 * \brief Set the callback for generating temporary DH keys. 3014 * \param ctx the SSL context. 3015 * \param dh the callback 3016 */ 3017 3018#ifndef OPENSSL_NO_DH 3019void 3020SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3021 int keylength)) 3022{ 3023 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3024} 3025 3026void 3027SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3028 int keylength)) 3029{ 3030 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3031} 3032#endif 3033 3034#ifndef OPENSSL_NO_ECDH 3035void 3036SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3037 int keylength)) 3038{ 3039 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3040} 3041 3042void 3043SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3044 int keylength)) 3045{ 3046 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3047} 3048#endif 3049 3050#ifndef OPENSSL_NO_PSK 3051int 3052SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3053{ 3054 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3055 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3056 return 0; 3057 } 3058 if (ctx->psk_identity_hint != NULL) 3059 free(ctx->psk_identity_hint); 3060 if (identity_hint != NULL) { 3061 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3062 if (ctx->psk_identity_hint == NULL) 3063 return 0; 3064 } else 3065 ctx->psk_identity_hint = NULL; 3066 return 1; 3067} 3068 3069int 3070SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3071{ 3072 if (s == NULL) 3073 return 0; 3074 3075 if (s->session == NULL) 3076 return 1; /* session not created yet, ignored */ 3077 3078 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3079 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3080 return 0; 3081 } 3082 if (s->session->psk_identity_hint != NULL) 3083 free(s->session->psk_identity_hint); 3084 if (identity_hint != NULL) { 3085 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3086 if (s->session->psk_identity_hint == NULL) 3087 return 0; 3088 } else 3089 s->session->psk_identity_hint = NULL; 3090 return 1; 3091} 3092 3093const char * 3094SSL_get_psk_identity_hint(const SSL *s) 3095{ 3096 if (s == NULL || s->session == NULL) 3097 return NULL; 3098 return (s->session->psk_identity_hint); 3099} 3100 3101const char * 3102SSL_get_psk_identity(const SSL *s) 3103{ 3104 if (s == NULL || s->session == NULL) 3105 return NULL; 3106 return (s->session->psk_identity); 3107} 3108 3109void 3110SSL_set_psk_client_callback(SSL *s, 3111 unsigned int (*cb)(SSL *ssl, const char *hint, 3112char *identity, unsigned int max_identity_len, unsigned char *psk, 3113 unsigned int max_psk_len)) 3114{ 3115 s->psk_client_callback = cb; 3116} 3117 3118void 3119SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3120 unsigned int (*cb)(SSL *ssl, const char *hint, 3121char *identity, unsigned int max_identity_len, unsigned char *psk, 3122 unsigned int max_psk_len)) 3123{ 3124 ctx->psk_client_callback = cb; 3125} 3126 3127void 3128SSL_set_psk_server_callback(SSL *s, 3129 unsigned int (*cb)(SSL *ssl, const char *identity, 3130unsigned char *psk, unsigned int max_psk_len)) 3131{ 3132 s->psk_server_callback = cb; 3133} 3134 3135void 3136SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3137 unsigned int (*cb)(SSL *ssl, const char *identity, 3138unsigned char *psk, unsigned int max_psk_len)) 3139{ 3140 ctx->psk_server_callback = cb; 3141} 3142#endif 3143 3144void 3145SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3146{ 3147 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3148} 3149 3150void 3151SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3152{ 3153 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3154} 3155 3156/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3157 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3158 * any. If EVP_MD pointer is passed, initializes ctx with this md 3159 * Returns newly allocated ctx; 3160 */ 3161 3162EVP_MD_CTX * 3163ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3164{ 3165 ssl_clear_hash_ctx(hash); 3166 *hash = EVP_MD_CTX_create(); 3167 if (md) 3168 EVP_DigestInit_ex(*hash, md, NULL); 3169 return *hash; 3170} 3171 3172void 3173ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3174{ 3175 3176 if (*hash) 3177 EVP_MD_CTX_destroy(*hash); 3178 *hash = NULL; 3179} 3180 3181void 3182SSL_set_debug(SSL *s, int debug) 3183{ 3184 s->debug = debug; 3185} 3186 3187int 3188SSL_cache_hit(SSL *s) 3189{ 3190 return s->hit; 3191} 3192 3193IMPLEMENT_STACK_OF(SSL_CIPHER) 3194IMPLEMENT_STACK_OF(SSL_COMP) 3195IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3196ssl_cipher_id); 3197