ssl_lib.c revision 1.40
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 /* 164 * Evil casts, but these functions are only called if there's a 165 * library bug. 166 */ 167 (int (*)(SSL *, int))ssl_undefined_function, 168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 169 ssl_undefined_function, 170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 171 (int (*)(SSL*, int))ssl_undefined_function, 172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function, 173 0, /* finish_mac_length */ 174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 175 NULL, /* client_finished_label */ 176 0, /* client_finished_label_len */ 177 NULL, /* server_finished_label */ 178 0, /* server_finished_label_len */ 179 (int (*)(int))ssl_undefined_function, 180 (int (*)(SSL *, unsigned char *, size_t, const char *, 181 size_t, const unsigned char *, size_t, 182 int use_context)) ssl_undefined_function, 183}; 184 185int 186SSL_clear(SSL *s) 187{ 188 if (s->method == NULL) { 189 SSLerr(SSL_F_SSL_CLEAR, 190 SSL_R_NO_METHOD_SPECIFIED); 191 return (0); 192 } 193 194 if (ssl_clear_bad_session(s)) { 195 SSL_SESSION_free(s->session); 196 s->session = NULL; 197 } 198 199 s->error = 0; 200 s->hit = 0; 201 s->shutdown = 0; 202 203 if (s->renegotiate) { 204 SSLerr(SSL_F_SSL_CLEAR, 205 ERR_R_INTERNAL_ERROR); 206 return 0; 207 } 208 209 s->type = 0; 210 211 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 212 213 s->version = s->method->version; 214 s->client_version = s->version; 215 s->rwstate = SSL_NOTHING; 216 s->rstate = SSL_ST_READ_HEADER; 217#if 0 218 s->read_ahead = s->ctx->read_ahead; 219#endif 220 221 if (s->init_buf != NULL) { 222 BUF_MEM_free(s->init_buf); 223 s->init_buf = NULL; 224 } 225 226 ssl_clear_cipher_ctx(s); 227 ssl_clear_hash_ctx(&s->read_hash); 228 ssl_clear_hash_ctx(&s->write_hash); 229 230 s->first_packet = 0; 231 232#if 1 233 /* 234 * Check to see if we were changed into a different method, if 235 * so, revert back if we are not doing session-id reuse. 236 */ 237 if (!s->in_handshake && (s->session == NULL) && 238 (s->method != s->ctx->method)) { 239 s->method->ssl_free(s); 240 s->method = s->ctx->method; 241 if (!s->method->ssl_new(s)) 242 return (0); 243 } else 244#endif 245 s->method->ssl_clear(s); 246 return (1); 247} 248 249/* Used to change an SSL_CTXs default SSL method type */ 250int 251SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 252{ 253 STACK_OF(SSL_CIPHER) *sk; 254 255 ctx->method = meth; 256 257 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 258 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 259 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 260 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 261 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 262 return (0); 263 } 264 return (1); 265} 266 267SSL * 268SSL_new(SSL_CTX *ctx) 269{ 270 SSL *s; 271 272 if (ctx == NULL) { 273 SSLerr(SSL_F_SSL_NEW, 274 SSL_R_NULL_SSL_CTX); 275 return (NULL); 276 } 277 if (ctx->method == NULL) { 278 SSLerr(SSL_F_SSL_NEW, 279 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 280 return (NULL); 281 } 282 283 s = calloc(1, sizeof(SSL)); 284 if (s == NULL) 285 goto err; 286 287#ifndef OPENSSL_NO_KRB5 288 s->kssl_ctx = kssl_ctx_new(); 289#endif /* OPENSSL_NO_KRB5 */ 290 291 s->options = ctx->options; 292 s->mode = ctx->mode; 293 s->max_cert_list = ctx->max_cert_list; 294 295 if (ctx->cert != NULL) { 296 /* 297 * Earlier library versions used to copy the pointer to 298 * the CERT, not its contents; only when setting new 299 * parameters for the per-SSL copy, ssl_cert_new would be 300 * called (and the direct reference to the per-SSL_CTX 301 * settings would be lost, but those still were indirectly 302 * accessed for various purposes, and for that reason they 303 * used to be known as s->ctx->default_cert). 304 * Now we don't look at the SSL_CTX's CERT after having 305 * duplicated it once. 306 */ 307 s->cert = ssl_cert_dup(ctx->cert); 308 if (s->cert == NULL) 309 goto err; 310 } else 311 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 312 313 s->read_ahead = ctx->read_ahead; 314 s->msg_callback = ctx->msg_callback; 315 s->msg_callback_arg = ctx->msg_callback_arg; 316 s->verify_mode = ctx->verify_mode; 317#if 0 318 s->verify_depth = ctx->verify_depth; 319#endif 320 s->sid_ctx_length = ctx->sid_ctx_length; 321 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 322 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 323 s->verify_callback = ctx->default_verify_callback; 324 s->generate_session_id = ctx->generate_session_id; 325 326 s->param = X509_VERIFY_PARAM_new(); 327 if (!s->param) 328 goto err; 329 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 330#if 0 331 s->purpose = ctx->purpose; 332 s->trust = ctx->trust; 333#endif 334 s->quiet_shutdown = ctx->quiet_shutdown; 335 s->max_send_fragment = ctx->max_send_fragment; 336 337 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 338 s->ctx = ctx; 339#ifndef OPENSSL_NO_TLSEXT 340 s->tlsext_debug_cb = 0; 341 s->tlsext_debug_arg = NULL; 342 s->tlsext_ticket_expected = 0; 343 s->tlsext_status_type = -1; 344 s->tlsext_status_expected = 0; 345 s->tlsext_ocsp_ids = NULL; 346 s->tlsext_ocsp_exts = NULL; 347 s->tlsext_ocsp_resp = NULL; 348 s->tlsext_ocsp_resplen = -1; 349 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 350 s->initial_ctx = ctx; 351# ifndef OPENSSL_NO_NEXTPROTONEG 352 s->next_proto_negotiated = NULL; 353# endif 354#endif 355 356 s->verify_result = X509_V_OK; 357 358 s->method = ctx->method; 359 360 if (!s->method->ssl_new(s)) 361 goto err; 362 363 s->references = 1; 364 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 365 366 SSL_clear(s); 367 368 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 369 370#ifndef OPENSSL_NO_PSK 371 s->psk_client_callback = ctx->psk_client_callback; 372 s->psk_server_callback = ctx->psk_server_callback; 373#endif 374 375 return (s); 376 err: 377 if (s != NULL) { 378 if (s->cert != NULL) 379 ssl_cert_free(s->cert); 380 if (s->ctx != NULL) 381 SSL_CTX_free(s->ctx); /* decrement reference count */ 382 free(s); 383 } 384 SSLerr(SSL_F_SSL_NEW, 385 ERR_R_MALLOC_FAILURE); 386 return (NULL); 387} 388 389int 390SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 391 unsigned int sid_ctx_len) 392{ 393 if (sid_ctx_len > sizeof ctx->sid_ctx) { 394 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 395 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 396 return 0; 397 } 398 ctx->sid_ctx_length = sid_ctx_len; 399 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 400 401 return 1; 402} 403 404int 405SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 406 unsigned int sid_ctx_len) 407{ 408 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 409 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 410 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 411 return 0; 412 } 413 ssl->sid_ctx_length = sid_ctx_len; 414 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 415 416 return 1; 417} 418 419int 420SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 421{ 422 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 423 ctx->generate_session_id = cb; 424 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 425 return 1; 426} 427 428int 429SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 430{ 431 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 432 ssl->generate_session_id = cb; 433 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 434 return 1; 435} 436 437int 438SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 439 unsigned int id_len) 440{ 441 /* 442 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 443 * shows how we can "construct" a session to give us the desired 444 * check - ie. to find if there's a session in the hash table 445 * that would conflict with any new session built out of this 446 * id/id_len and the ssl_version in use by this SSL. 447 */ 448 SSL_SESSION r, *p; 449 450 if (id_len > sizeof r.session_id) 451 return 0; 452 453 r.ssl_version = ssl->version; 454 r.session_id_length = id_len; 455 memcpy(r.session_id, id, id_len); 456 457 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 458 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 459 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 460 return (p != NULL); 461} 462 463int 464SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 465{ 466 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 467} 468 469int 470SSL_set_purpose(SSL *s, int purpose) 471{ 472 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 473} 474 475int 476SSL_CTX_set_trust(SSL_CTX *s, int trust) 477{ 478 return X509_VERIFY_PARAM_set_trust(s->param, trust); 479} 480 481int 482SSL_set_trust(SSL *s, int trust) 483{ 484 return X509_VERIFY_PARAM_set_trust(s->param, trust); 485} 486 487int 488SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 489{ 490 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 491} 492 493int 494SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 495{ 496 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 497} 498 499void 500SSL_free(SSL *s) 501{ 502 int i; 503 504 if (s == NULL) 505 return; 506 507 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 508 if (i > 0) 509 return; 510 511 if (s->param) 512 X509_VERIFY_PARAM_free(s->param); 513 514 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 515 516 if (s->bbio != NULL) { 517 /* If the buffering BIO is in place, pop it off */ 518 if (s->bbio == s->wbio) { 519 s->wbio = BIO_pop(s->wbio); 520 } 521 BIO_free(s->bbio); 522 s->bbio = NULL; 523 } 524 if (s->rbio != NULL) 525 BIO_free_all(s->rbio); 526 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 527 BIO_free_all(s->wbio); 528 529 if (s->init_buf != NULL) 530 BUF_MEM_free(s->init_buf); 531 532 /* add extra stuff */ 533 if (s->cipher_list != NULL) 534 sk_SSL_CIPHER_free(s->cipher_list); 535 if (s->cipher_list_by_id != NULL) 536 sk_SSL_CIPHER_free(s->cipher_list_by_id); 537 538 /* Make the next call work :-) */ 539 if (s->session != NULL) { 540 ssl_clear_bad_session(s); 541 SSL_SESSION_free(s->session); 542 } 543 544 ssl_clear_cipher_ctx(s); 545 ssl_clear_hash_ctx(&s->read_hash); 546 ssl_clear_hash_ctx(&s->write_hash); 547 548 if (s->cert != NULL) 549 ssl_cert_free(s->cert); 550 /* Free up if allocated */ 551 552#ifndef OPENSSL_NO_TLSEXT 553 if (s->tlsext_hostname) 554 free(s->tlsext_hostname); 555 if (s->initial_ctx) 556 SSL_CTX_free(s->initial_ctx); 557#ifndef OPENSSL_NO_EC 558 if (s->tlsext_ecpointformatlist) 559 free(s->tlsext_ecpointformatlist); 560 if (s->tlsext_ellipticcurvelist) 561 free(s->tlsext_ellipticcurvelist); 562#endif /* OPENSSL_NO_EC */ 563 if (s->tlsext_opaque_prf_input) 564 free(s->tlsext_opaque_prf_input); 565 if (s->tlsext_ocsp_exts) 566 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 567 X509_EXTENSION_free); 568 if (s->tlsext_ocsp_ids) 569 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 570 if (s->tlsext_ocsp_resp) 571 free(s->tlsext_ocsp_resp); 572#endif 573 574 if (s->client_CA != NULL) 575 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 576 577 if (s->method != NULL) 578 s->method->ssl_free(s); 579 580 if (s->ctx) 581 SSL_CTX_free(s->ctx); 582 583#ifndef OPENSSL_NO_KRB5 584 if (s->kssl_ctx != NULL) 585 kssl_ctx_free(s->kssl_ctx); 586#endif /* OPENSSL_NO_KRB5 */ 587 588#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 589 if (s->next_proto_negotiated) 590 free(s->next_proto_negotiated); 591#endif 592 593#ifndef OPENSSL_NO_SRTP 594 if (s->srtp_profiles) 595 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 596#endif 597 598 free(s); 599} 600 601void 602SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 603{ 604 /* If the output buffering BIO is still in place, remove it */ 605 if (s->bbio != NULL) { 606 if (s->wbio == s->bbio) { 607 s->wbio = s->wbio->next_bio; 608 s->bbio->next_bio = NULL; 609 } 610 } 611 if ((s->rbio != NULL) && (s->rbio != rbio)) 612 BIO_free_all(s->rbio); 613 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 614 BIO_free_all(s->wbio); 615 s->rbio = rbio; 616 s->wbio = wbio; 617} 618 619BIO * 620SSL_get_rbio(const SSL *s) 621{ 622 return (s->rbio); 623} 624 625BIO * 626SSL_get_wbio(const SSL *s) 627{ 628 return (s->wbio); 629} 630 631int 632SSL_get_fd(const SSL *s) 633{ 634 return (SSL_get_rfd(s)); 635} 636 637int 638SSL_get_rfd(const SSL *s) 639{ 640 int ret = -1; 641 BIO *b, *r; 642 643 b = SSL_get_rbio(s); 644 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 645 if (r != NULL) 646 BIO_get_fd(r, &ret); 647 return (ret); 648} 649 650int 651SSL_get_wfd(const SSL *s) 652{ 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_wbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661} 662 663#ifndef OPENSSL_NO_SOCK 664int 665SSL_set_fd(SSL *s, int fd) 666{ 667 int ret = 0; 668 BIO *bio = NULL; 669 670 bio = BIO_new(BIO_s_socket()); 671 672 if (bio == NULL) { 673 SSLerr(SSL_F_SSL_SET_FD, 674 ERR_R_BUF_LIB); 675 goto err; 676 } 677 BIO_set_fd(bio, fd, BIO_NOCLOSE); 678 SSL_set_bio(s, bio, bio); 679 ret = 1; 680 err: 681 return (ret); 682} 683 684int 685SSL_set_wfd(SSL *s, int fd) 686{ 687 int ret = 0; 688 BIO *bio = NULL; 689 690 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 691 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 692 bio = BIO_new(BIO_s_socket()); 693 694 if (bio == NULL) { 695 SSLerr(SSL_F_SSL_SET_WFD, 696 ERR_R_BUF_LIB); 697 goto err; 698 } 699 BIO_set_fd(bio, fd, BIO_NOCLOSE); 700 SSL_set_bio(s, SSL_get_rbio(s), bio); 701 } else 702 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 703 ret = 1; 704 err: 705 return (ret); 706} 707 708int 709SSL_set_rfd(SSL *s, int fd) 710{ 711 int ret = 0; 712 BIO *bio = NULL; 713 714 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 715 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 716 bio = BIO_new(BIO_s_socket()); 717 718 if (bio == NULL) { 719 SSLerr(SSL_F_SSL_SET_RFD, 720 ERR_R_BUF_LIB); 721 goto err; 722 } 723 BIO_set_fd(bio, fd, BIO_NOCLOSE); 724 SSL_set_bio(s, bio, SSL_get_wbio(s)); 725 } else 726 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 727 ret = 1; 728 err: 729 return (ret); 730} 731#endif 732 733 734/* return length of latest Finished message we sent, copy to 'buf' */ 735size_t 736SSL_get_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.finish_md_len; 742 if (count > ret) 743 count = ret; 744 memcpy(buf, s->s3->tmp.finish_md, count); 745 } 746 return ret; 747} 748 749/* return length of latest Finished message we expected, copy to 'buf' */ 750size_t 751SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 752{ 753 size_t ret = 0; 754 755 if (s->s3 != NULL) { 756 ret = s->s3->tmp.peer_finish_md_len; 757 if (count > ret) 758 count = ret; 759 memcpy(buf, s->s3->tmp.peer_finish_md, count); 760 } 761 return ret; 762} 763 764 765int 766SSL_get_verify_mode(const SSL *s) 767{ 768 return (s->verify_mode); 769} 770 771int 772SSL_get_verify_depth(const SSL *s) 773{ 774 return X509_VERIFY_PARAM_get_depth(s->param); 775} 776 777int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 778{ 779 return (s->verify_callback); 780} 781 782int 783SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 784{ 785 return (ctx->verify_mode); 786} 787 788int 789SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 790{ 791 return X509_VERIFY_PARAM_get_depth(ctx->param); 792} 793 794int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 795{ 796 return (ctx->default_verify_callback); 797} 798 799void 800SSL_set_verify(SSL *s, int mode, 801 int (*callback)(int ok, X509_STORE_CTX *ctx)) 802{ 803 s->verify_mode = mode; 804 if (callback != NULL) 805 s->verify_callback = callback; 806} 807 808void 809SSL_set_verify_depth(SSL *s, int depth) 810{ 811 X509_VERIFY_PARAM_set_depth(s->param, depth); 812} 813 814void 815SSL_set_read_ahead(SSL *s, int yes) 816{ 817 s->read_ahead = yes; 818} 819 820int 821SSL_get_read_ahead(const SSL *s) 822{ 823 return (s->read_ahead); 824} 825 826int 827SSL_pending(const SSL *s) 828{ 829 /* 830 * SSL_pending cannot work properly if read-ahead is enabled 831 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 832 * and it is impossible to fix since SSL_pending cannot report 833 * errors that may be observed while scanning the new data. 834 * (Note that SSL_pending() is often used as a boolean value, 835 * so we'd better not return -1.) 836 */ 837 return (s->method->ssl_pending(s)); 838} 839 840X509 * 841SSL_get_peer_certificate(const SSL *s) 842{ 843 X509 *r; 844 845 if ((s == NULL) || (s->session == NULL)) 846 r = NULL; 847 else 848 r = s->session->peer; 849 850 if (r == NULL) 851 return (r); 852 853 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 854 855 return (r); 856} 857 858STACK_OF(X509) * 859SSL_get_peer_cert_chain(const SSL *s) 860{ 861 STACK_OF(X509) *r; 862 863 if ((s == NULL) || (s->session == NULL) || 864 (s->session->sess_cert == NULL)) 865 r = NULL; 866 else 867 r = s->session->sess_cert->cert_chain; 868 869 /* 870 * If we are a client, cert_chain includes the peer's own 871 * certificate; 872 * if we are a server, it does not. 873 */ 874 return (r); 875} 876 877/* 878 * Now in theory, since the calling process own 't' it should be safe to 879 * modify. We need to be able to read f without being hassled 880 */ 881void 882SSL_copy_session_id(SSL *t, const SSL *f) 883{ 884 CERT *tmp; 885 886 /* Do we need to to SSL locking? */ 887 SSL_set_session(t, SSL_get_session(f)); 888 889 /* 890 * What if we are setup as SSLv2 but want to talk SSLv3 or 891 * vice-versa. 892 */ 893 if (t->method != f->method) { 894 t->method->ssl_free(t); /* cleanup current */ 895 t->method=f->method; /* change method */ 896 t->method->ssl_new(t); /* setup new */ 897 } 898 899 tmp = t->cert; 900 if (f->cert != NULL) { 901 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 902 t->cert = f->cert; 903 } else 904 t->cert = NULL; 905 if (tmp != NULL) 906 ssl_cert_free(tmp); 907 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 908} 909 910/* Fix this so it checks all the valid key/cert options */ 911int 912SSL_CTX_check_private_key(const SSL_CTX *ctx) 913{ 914 if ((ctx == NULL) || (ctx->cert == NULL) || 915 (ctx->cert->key->x509 == NULL)) { 916 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 917 SSL_R_NO_CERTIFICATE_ASSIGNED); 918 return (0); 919 } 920 if (ctx->cert->key->privatekey == NULL) { 921 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 922 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 923 return (0); 924 } 925 return (X509_check_private_key(ctx->cert->key->x509, 926 ctx->cert->key->privatekey)); 927} 928 929/* Fix this function so that it takes an optional type parameter */ 930int 931SSL_check_private_key(const SSL *ssl) 932{ 933 if (ssl == NULL) { 934 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 935 ERR_R_PASSED_NULL_PARAMETER); 936 return (0); 937 } 938 if (ssl->cert == NULL) { 939 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 940 SSL_R_NO_CERTIFICATE_ASSIGNED); 941 return 0; 942 } 943 if (ssl->cert->key->x509 == NULL) { 944 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 945 SSL_R_NO_CERTIFICATE_ASSIGNED); 946 return (0); 947 } 948 if (ssl->cert->key->privatekey == NULL) { 949 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 950 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 951 return (0); 952 } 953 return (X509_check_private_key(ssl->cert->key->x509, 954 ssl->cert->key->privatekey)); 955} 956 957int 958SSL_accept(SSL *s) 959{ 960 if (s->handshake_func == 0) 961 SSL_set_accept_state(s); /* Not properly initialized yet */ 962 963 return (s->method->ssl_accept(s)); 964} 965 966int 967SSL_connect(SSL *s) 968{ 969 if (s->handshake_func == 0) 970 SSL_set_connect_state(s); /* Not properly initialized yet */ 971 972 return (s->method->ssl_connect(s)); 973} 974 975long 976SSL_get_default_timeout(const SSL *s) 977{ 978 return (s->method->get_timeout()); 979} 980 981int 982SSL_read(SSL *s, void *buf, int num) 983{ 984 if (s->handshake_func == 0) { 985 SSLerr(SSL_F_SSL_READ, 986 SSL_R_UNINITIALIZED); 987 return -1; 988 } 989 990 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 991 s->rwstate = SSL_NOTHING; 992 return (0); 993 } 994 return (s->method->ssl_read(s, buf, num)); 995} 996 997int 998SSL_peek(SSL *s, void *buf, int num) 999{ 1000 if (s->handshake_func == 0) { 1001 SSLerr(SSL_F_SSL_PEEK, 1002 SSL_R_UNINITIALIZED); 1003 return -1; 1004 } 1005 1006 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1007 return (0); 1008 } 1009 return (s->method->ssl_peek(s, buf, num)); 1010} 1011 1012int 1013SSL_write(SSL *s, const void *buf, int num) 1014{ 1015 if (s->handshake_func == 0) { 1016 SSLerr(SSL_F_SSL_WRITE, 1017 SSL_R_UNINITIALIZED); 1018 return -1; 1019 } 1020 1021 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1022 s->rwstate = SSL_NOTHING; 1023 SSLerr(SSL_F_SSL_WRITE, 1024 SSL_R_PROTOCOL_IS_SHUTDOWN); 1025 return (-1); 1026 } 1027 return (s->method->ssl_write(s, buf, num)); 1028} 1029 1030int 1031SSL_shutdown(SSL *s) 1032{ 1033 /* 1034 * Note that this function behaves differently from what one might 1035 * expect. Return values are 0 for no success (yet), 1036 * 1 for success; but calling it once is usually not enough, 1037 * even if blocking I/O is used (see ssl3_shutdown). 1038 */ 1039 1040 if (s->handshake_func == 0) { 1041 SSLerr(SSL_F_SSL_SHUTDOWN, 1042 SSL_R_UNINITIALIZED); 1043 return -1; 1044 } 1045 1046 if ((s != NULL) && !SSL_in_init(s)) 1047 return (s->method->ssl_shutdown(s)); 1048 else 1049 return (1); 1050} 1051 1052int 1053SSL_renegotiate(SSL *s) 1054{ 1055 if (s->renegotiate == 0) 1056 s->renegotiate = 1; 1057 1058 s->new_session = 1; 1059 1060 return (s->method->ssl_renegotiate(s)); 1061} 1062 1063int 1064SSL_renegotiate_abbreviated(SSL *s) 1065{ 1066 if (s->renegotiate == 0) 1067 s->renegotiate = 1; 1068 1069 s->new_session = 0; 1070 1071 return (s->method->ssl_renegotiate(s)); 1072} 1073 1074int 1075SSL_renegotiate_pending(SSL *s) 1076{ 1077 /* 1078 * Becomes true when negotiation is requested; 1079 * false again once a handshake has finished. 1080 */ 1081 return (s->renegotiate != 0); 1082} 1083 1084long 1085SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1086{ 1087 long l; 1088 1089 switch (cmd) { 1090 case SSL_CTRL_GET_READ_AHEAD: 1091 return (s->read_ahead); 1092 case SSL_CTRL_SET_READ_AHEAD: 1093 l = s->read_ahead; 1094 s->read_ahead = larg; 1095 return (l); 1096 1097 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1098 s->msg_callback_arg = parg; 1099 return 1; 1100 1101 case SSL_CTRL_OPTIONS: 1102 return (s->options|=larg); 1103 case SSL_CTRL_CLEAR_OPTIONS: 1104 return (s->options&=~larg); 1105 case SSL_CTRL_MODE: 1106 return (s->mode|=larg); 1107 case SSL_CTRL_CLEAR_MODE: 1108 return (s->mode &=~larg); 1109 case SSL_CTRL_GET_MAX_CERT_LIST: 1110 return (s->max_cert_list); 1111 case SSL_CTRL_SET_MAX_CERT_LIST: 1112 l = s->max_cert_list; 1113 s->max_cert_list = larg; 1114 return (l); 1115 case SSL_CTRL_SET_MTU: 1116#ifndef OPENSSL_NO_DTLS1 1117 if (larg < (long)dtls1_min_mtu()) 1118 return 0; 1119#endif 1120 1121 if (SSL_version(s) == DTLS1_VERSION || 1122 SSL_version(s) == DTLS1_BAD_VER) { 1123 s->d1->mtu = larg; 1124 return larg; 1125 } 1126 return 0; 1127 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1128 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1129 return 0; 1130 s->max_send_fragment = larg; 1131 return 1; 1132 case SSL_CTRL_GET_RI_SUPPORT: 1133 if (s->s3) 1134 return s->s3->send_connection_binding; 1135 else return 0; 1136 default: 1137 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1138 } 1139} 1140 1141long 1142SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1143{ 1144 switch (cmd) { 1145 case SSL_CTRL_SET_MSG_CALLBACK: 1146 s->msg_callback = (void (*)(int write_p, int version, 1147 int content_type, const void *buf, size_t len, 1148 SSL *ssl, void *arg))(fp); 1149 return 1; 1150 1151 default: 1152 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1153 } 1154} 1155 1156LHASH_OF(SSL_SESSION) * 1157SSL_CTX_sessions(SSL_CTX *ctx) 1158{ 1159 return ctx->sessions; 1160} 1161 1162long 1163SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1164{ 1165 long l; 1166 1167 switch (cmd) { 1168 case SSL_CTRL_GET_READ_AHEAD: 1169 return (ctx->read_ahead); 1170 case SSL_CTRL_SET_READ_AHEAD: 1171 l = ctx->read_ahead; 1172 ctx->read_ahead = larg; 1173 return (l); 1174 1175 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1176 ctx->msg_callback_arg = parg; 1177 return 1; 1178 1179 case SSL_CTRL_GET_MAX_CERT_LIST: 1180 return (ctx->max_cert_list); 1181 case SSL_CTRL_SET_MAX_CERT_LIST: 1182 l = ctx->max_cert_list; 1183 ctx->max_cert_list = larg; 1184 return (l); 1185 1186 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1187 l = ctx->session_cache_size; 1188 ctx->session_cache_size = larg; 1189 return (l); 1190 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1191 return (ctx->session_cache_size); 1192 case SSL_CTRL_SET_SESS_CACHE_MODE: 1193 l = ctx->session_cache_mode; 1194 ctx->session_cache_mode = larg; 1195 return (l); 1196 case SSL_CTRL_GET_SESS_CACHE_MODE: 1197 return (ctx->session_cache_mode); 1198 1199 case SSL_CTRL_SESS_NUMBER: 1200 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1201 case SSL_CTRL_SESS_CONNECT: 1202 return (ctx->stats.sess_connect); 1203 case SSL_CTRL_SESS_CONNECT_GOOD: 1204 return (ctx->stats.sess_connect_good); 1205 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1206 return (ctx->stats.sess_connect_renegotiate); 1207 case SSL_CTRL_SESS_ACCEPT: 1208 return (ctx->stats.sess_accept); 1209 case SSL_CTRL_SESS_ACCEPT_GOOD: 1210 return (ctx->stats.sess_accept_good); 1211 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1212 return (ctx->stats.sess_accept_renegotiate); 1213 case SSL_CTRL_SESS_HIT: 1214 return (ctx->stats.sess_hit); 1215 case SSL_CTRL_SESS_CB_HIT: 1216 return (ctx->stats.sess_cb_hit); 1217 case SSL_CTRL_SESS_MISSES: 1218 return (ctx->stats.sess_miss); 1219 case SSL_CTRL_SESS_TIMEOUTS: 1220 return (ctx->stats.sess_timeout); 1221 case SSL_CTRL_SESS_CACHE_FULL: 1222 return (ctx->stats.sess_cache_full); 1223 case SSL_CTRL_OPTIONS: 1224 return (ctx->options|=larg); 1225 case SSL_CTRL_CLEAR_OPTIONS: 1226 return (ctx->options&=~larg); 1227 case SSL_CTRL_MODE: 1228 return (ctx->mode|=larg); 1229 case SSL_CTRL_CLEAR_MODE: 1230 return (ctx->mode&=~larg); 1231 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1232 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1233 return 0; 1234 ctx->max_send_fragment = larg; 1235 return 1; 1236 default: 1237 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1238 } 1239} 1240 1241long 1242SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1243{ 1244 switch (cmd) { 1245 case SSL_CTRL_SET_MSG_CALLBACK: 1246 ctx->msg_callback = (void (*)(int write_p, int version, 1247 int content_type, const void *buf, size_t len, SSL *ssl, 1248 void *arg))(fp); 1249 return 1; 1250 1251 default: 1252 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1253 } 1254} 1255 1256int 1257ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1258{ 1259 long l; 1260 1261 l = a->id - b->id; 1262 if (l == 0L) 1263 return (0); 1264 else 1265 return ((l > 0) ? 1:-1); 1266} 1267 1268int 1269ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1270 const SSL_CIPHER * const *bp) 1271{ 1272 long l; 1273 1274 l = (*ap)->id - (*bp)->id; 1275 if (l == 0L) 1276 return (0); 1277 else 1278 return ((l > 0) ? 1:-1); 1279} 1280 1281/* 1282 * Return a STACK of the ciphers available for the SSL and in order of 1283 * preference. 1284 */ 1285STACK_OF(SSL_CIPHER) * 1286SSL_get_ciphers(const SSL *s) 1287{ 1288 if (s != NULL) { 1289 if (s->cipher_list != NULL) { 1290 return (s->cipher_list); 1291 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1292 return (s->ctx->cipher_list); 1293 } 1294 } 1295 return (NULL); 1296} 1297 1298/* 1299 * Return a STACK of the ciphers available for the SSL and in order of 1300 * algorithm id. 1301 */ 1302STACK_OF(SSL_CIPHER) * 1303ssl_get_ciphers_by_id(SSL *s) 1304{ 1305 if (s != NULL) { 1306 if (s->cipher_list_by_id != NULL) { 1307 return (s->cipher_list_by_id); 1308 } else if ((s->ctx != NULL) && 1309 (s->ctx->cipher_list_by_id != NULL)) { 1310 return (s->ctx->cipher_list_by_id); 1311 } 1312 } 1313 return (NULL); 1314} 1315 1316/* The old interface to get the same thing as SSL_get_ciphers(). */ 1317const char * 1318SSL_get_cipher_list(const SSL *s, int n) 1319{ 1320 SSL_CIPHER *c; 1321 STACK_OF(SSL_CIPHER) *sk; 1322 1323 if (s == NULL) 1324 return (NULL); 1325 sk = SSL_get_ciphers(s); 1326 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1327 return (NULL); 1328 c = sk_SSL_CIPHER_value(sk, n); 1329 if (c == NULL) 1330 return (NULL); 1331 return (c->name); 1332} 1333 1334/* Specify the ciphers to be used by default by the SSL_CTX. */ 1335int 1336SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1337{ 1338 STACK_OF(SSL_CIPHER) *sk; 1339 1340 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1341 &ctx->cipher_list_by_id, str); 1342 /* 1343 * ssl_create_cipher_list may return an empty stack if it 1344 * was unable to find a cipher matching the given rule string 1345 * (for example if the rule string specifies a cipher which 1346 * has been disabled). This is not an error as far as 1347 * ssl_create_cipher_list is concerned, and hence 1348 * ctx->cipher_list and ctx->cipher_list_by_id has been 1349 * updated. 1350 */ 1351 if (sk == NULL) 1352 return 0; 1353 else if (sk_SSL_CIPHER_num(sk) == 0) { 1354 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1355 SSL_R_NO_CIPHER_MATCH); 1356 return 0; 1357 } 1358 return 1; 1359} 1360 1361/* Specify the ciphers to be used by the SSL. */ 1362int 1363SSL_set_cipher_list(SSL *s, const char *str) 1364{ 1365 STACK_OF(SSL_CIPHER) *sk; 1366 1367 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1368 &s->cipher_list_by_id, str); 1369 /* see comment in SSL_CTX_set_cipher_list */ 1370 if (sk == NULL) 1371 return 0; 1372 else if (sk_SSL_CIPHER_num(sk) == 0) { 1373 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1374 SSL_R_NO_CIPHER_MATCH); 1375 return 0; 1376 } 1377 return 1; 1378} 1379 1380/* works well for SSLv2, not so good for SSLv3 */ 1381char * 1382SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1383{ 1384 char *end; 1385 STACK_OF(SSL_CIPHER) *sk; 1386 SSL_CIPHER *c; 1387 size_t curlen = 0; 1388 int i; 1389 1390 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1391 (len < 2)) 1392 return (NULL); 1393 1394 sk = s->session->ciphers; 1395 buf[0] = '\0'; 1396 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1397 c = sk_SSL_CIPHER_value(sk, i); 1398 end = buf + curlen; 1399 if (strlcat(buf, c->name, len) >= len || 1400 (curlen = strlcat(buf, ":", len)) >= len) { 1401 /* remove truncated cipher from list */ 1402 *end = '\0'; 1403 break; 1404 } 1405 } 1406 /* remove trailing colon */ 1407 if ((end = strrchr(buf, ':')) != NULL) 1408 *end = '\0'; 1409 return (buf); 1410} 1411 1412int 1413ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1414 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1415{ 1416 int i, j = 0; 1417 SSL_CIPHER *c; 1418 unsigned char *q; 1419#ifndef OPENSSL_NO_KRB5 1420 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1421#endif /* OPENSSL_NO_KRB5 */ 1422 1423 if (sk == NULL) 1424 return (0); 1425 q = p; 1426 1427 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1428 c = sk_SSL_CIPHER_value(sk, i); 1429 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1430 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1431 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1432 continue; 1433#ifndef OPENSSL_NO_KRB5 1434 if (((c->algorithm_mkey & SSL_kKRB5) || 1435 (c->algorithm_auth & SSL_aKRB5)) && nokrb5) 1436 continue; 1437#endif /* OPENSSL_NO_KRB5 */ 1438#ifndef OPENSSL_NO_PSK 1439 /* with PSK there must be client callback set */ 1440 if (((c->algorithm_mkey & SSL_kPSK) || 1441 (c->algorithm_auth & SSL_aPSK)) && 1442 s->psk_client_callback == NULL) 1443 continue; 1444#endif /* OPENSSL_NO_PSK */ 1445 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1446 p += j; 1447 } 1448 /* 1449 * If p == q, no ciphers and caller indicates an error. Otherwise 1450 * add SCSV if not renegotiating. 1451 */ 1452 if (p != q && !s->renegotiate) { 1453 static SSL_CIPHER scsv = { 1454 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1455 }; 1456 j = put_cb ? put_cb(&scsv, p) : 1457 ssl_put_cipher_by_char(s, &scsv, p); 1458 p += j; 1459#ifdef OPENSSL_RI_DEBUG 1460 fprintf(stderr, "SCSV sent by client\n"); 1461#endif 1462 } 1463 1464 return (p - q); 1465} 1466 1467STACK_OF(SSL_CIPHER) * 1468ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1469 STACK_OF(SSL_CIPHER) **skp) 1470{ 1471 const SSL_CIPHER *c; 1472 STACK_OF(SSL_CIPHER) *sk; 1473 int i, n; 1474 1475 if (s->s3) 1476 s->s3->send_connection_binding = 0; 1477 1478 n = ssl_put_cipher_by_char(s, NULL, NULL); 1479 if ((num % n) != 0) { 1480 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1481 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1482 return (NULL); 1483 } 1484 if ((skp == NULL) || (*skp == NULL)) 1485 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1486 else { 1487 sk= *skp; 1488 sk_SSL_CIPHER_zero(sk); 1489 } 1490 1491 for (i = 0; i < num; i += n) { 1492 /* Check for SCSV */ 1493 if (s->s3 && (n != 3 || !p[0]) && 1494 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1495 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1496 /* SCSV fatal if renegotiating */ 1497 if (s->renegotiate) { 1498 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1499 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1500 ssl3_send_alert(s, SSL3_AL_FATAL, 1501 SSL_AD_HANDSHAKE_FAILURE); 1502 1503 goto err; 1504 } 1505 s->s3->send_connection_binding = 1; 1506 p += n; 1507#ifdef OPENSSL_RI_DEBUG 1508 fprintf(stderr, "SCSV received by server\n"); 1509#endif 1510 continue; 1511 } 1512 1513 c = ssl_get_cipher_by_char(s, p); 1514 p += n; 1515 if (c != NULL) { 1516 if (!sk_SSL_CIPHER_push(sk, c)) { 1517 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1518 ERR_R_MALLOC_FAILURE); 1519 goto err; 1520 } 1521 } 1522 } 1523 1524 if (skp != NULL) 1525 *skp = sk; 1526 return (sk); 1527 err: 1528 if ((skp == NULL) || (*skp == NULL)) 1529 sk_SSL_CIPHER_free(sk); 1530 return (NULL); 1531} 1532 1533 1534#ifndef OPENSSL_NO_TLSEXT 1535/* 1536 * Return a servername extension value if provided in Client Hello, or NULL. 1537 * So far, only host_name types are defined (RFC 3546). 1538 */ 1539const char * 1540SSL_get_servername(const SSL *s, const int type) 1541{ 1542 if (type != TLSEXT_NAMETYPE_host_name) 1543 return NULL; 1544 1545 return s->session && !s->tlsext_hostname ? 1546 s->session->tlsext_hostname : 1547 s->tlsext_hostname; 1548} 1549 1550int 1551SSL_get_servername_type(const SSL *s) 1552{ 1553 if (s->session && 1554 (!s->tlsext_hostname ? 1555 s->session->tlsext_hostname : s->tlsext_hostname)) 1556 return TLSEXT_NAMETYPE_host_name; 1557 return -1; 1558} 1559 1560# ifndef OPENSSL_NO_NEXTPROTONEG 1561/* 1562 * SSL_select_next_proto implements the standard protocol selection. It is 1563 * expected that this function is called from the callback set by 1564 * SSL_CTX_set_next_proto_select_cb. 1565 * 1566 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1567 * strings. The length byte itself is not included in the length. A byte 1568 * string of length 0 is invalid. No byte string may be truncated. 1569 * 1570 * The current, but experimental algorithm for selecting the protocol is: 1571 * 1572 * 1) If the server doesn't support NPN then this is indicated to the 1573 * callback. In this case, the client application has to abort the connection 1574 * or have a default application level protocol. 1575 * 1576 * 2) If the server supports NPN, but advertises an empty list then the 1577 * client selects the first protcol in its list, but indicates via the 1578 * API that this fallback case was enacted. 1579 * 1580 * 3) Otherwise, the client finds the first protocol in the server's list 1581 * that it supports and selects this protocol. This is because it's 1582 * assumed that the server has better information about which protocol 1583 * a client should use. 1584 * 1585 * 4) If the client doesn't support any of the server's advertised 1586 * protocols, then this is treated the same as case 2. 1587 * 1588 * It returns either 1589 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1590 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1591 */ 1592int 1593SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1594 const unsigned char *server, unsigned int server_len, 1595 const unsigned char *client, unsigned int client_len) 1596{ 1597 unsigned int i, j; 1598 const unsigned char *result; 1599 int status = OPENSSL_NPN_UNSUPPORTED; 1600 1601 /* 1602 * For each protocol in server preference order, 1603 * see if we support it. 1604 */ 1605 for (i = 0; i < server_len; ) { 1606 for (j = 0; j < client_len; ) { 1607 if (server[i] == client[j] && 1608 memcmp(&server[i + 1], 1609 &client[j + 1], server[i]) == 0) { 1610 /* We found a match */ 1611 result = &server[i]; 1612 status = OPENSSL_NPN_NEGOTIATED; 1613 goto found; 1614 } 1615 j += client[j]; 1616 j++; 1617 } 1618 i += server[i]; 1619 i++; 1620 } 1621 1622 /* There's no overlap between our protocols and the server's list. */ 1623 result = client; 1624 status = OPENSSL_NPN_NO_OVERLAP; 1625 1626 found: 1627 *out = (unsigned char *) result + 1; 1628 *outlen = result[0]; 1629 return status; 1630} 1631 1632/* 1633 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1634 * requested protocol for this connection and returns 0. If the client didn't 1635 * request any protocol, then *data is set to NULL. 1636 * 1637 * Note that the client can request any protocol it chooses. The value returned 1638 * from this function need not be a member of the list of supported protocols 1639 * provided by the callback. 1640 */ 1641void 1642SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1643 unsigned *len) 1644{ 1645 *data = s->next_proto_negotiated; 1646 if (!*data) { 1647 *len = 0; 1648 } else { 1649 *len = s->next_proto_negotiated_len; 1650 } 1651} 1652 1653/* 1654 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1655 * TLS server needs a list of supported protocols for Next Protocol 1656 * Negotiation. The returned list must be in wire format. The list is returned 1657 * by setting |out| to point to it and |outlen| to its length. This memory will 1658 * not be modified, but one should assume that the SSL* keeps a reference to 1659 * it. 1660 * 1661 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1662 * Otherwise, no such extension will be included in the ServerHello. 1663 */ 1664void 1665SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1666 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1667{ 1668 ctx->next_protos_advertised_cb = cb; 1669 ctx->next_protos_advertised_cb_arg = arg; 1670} 1671 1672/* 1673 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1674 * client needs to select a protocol from the server's provided list. |out| 1675 * must be set to point to the selected protocol (which may be within |in|). 1676 * The length of the protocol name must be written into |outlen|. The server's 1677 * advertised protocols are provided in |in| and |inlen|. The callback can 1678 * assume that |in| is syntactically valid. 1679 * 1680 * The client must select a protocol. It is fatal to the connection if this 1681 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1682 */ 1683void 1684SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1685 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1686 unsigned int inlen, void *arg), void *arg) 1687{ 1688 ctx->next_proto_select_cb = cb; 1689 ctx->next_proto_select_cb_arg = arg; 1690} 1691# endif 1692#endif 1693 1694int 1695SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1696 const char *label, size_t llen, const unsigned char *p, size_t plen, 1697 int use_context) 1698{ 1699 if (s->version < TLS1_VERSION) 1700 return -1; 1701 1702 return s->method->ssl3_enc->export_keying_material(s, out, olen, 1703 label, llen, p, plen, use_context); 1704} 1705 1706static unsigned long 1707ssl_session_hash(const SSL_SESSION *a) 1708{ 1709 unsigned long l; 1710 1711 l = (unsigned long) 1712 ((unsigned int) a->session_id[0] )| 1713 ((unsigned int) a->session_id[1]<< 8L)| 1714 ((unsigned long)a->session_id[2]<<16L)| 1715 ((unsigned long)a->session_id[3]<<24L); 1716 return (l); 1717} 1718 1719/* 1720 * NB: If this function (or indeed the hash function which uses a sort of 1721 * coarser function than this one) is changed, ensure 1722 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1723 * able to construct an SSL_SESSION that will collide with any existing session 1724 * with a matching session ID. 1725 */ 1726static int 1727ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1728{ 1729 if (a->ssl_version != b->ssl_version) 1730 return (1); 1731 if (a->session_id_length != b->session_id_length) 1732 return (1); 1733 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1734} 1735 1736/* 1737 * These wrapper functions should remain rather than redeclaring 1738 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1739 * variable. The reason is that the functions aren't static, they're exposed via 1740 * ssl.h. 1741 */ 1742static 1743IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1744static 1745IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1746 1747SSL_CTX * 1748SSL_CTX_new(const SSL_METHOD *meth) 1749{ 1750 SSL_CTX *ret = NULL; 1751 1752 if (meth == NULL) { 1753 SSLerr(SSL_F_SSL_CTX_NEW, 1754 SSL_R_NULL_SSL_METHOD_PASSED); 1755 return (NULL); 1756 } 1757 1758 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1759 SSLerr(SSL_F_SSL_CTX_NEW, 1760 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1761 goto err; 1762 } 1763 ret = calloc(1, sizeof(SSL_CTX)); 1764 if (ret == NULL) 1765 goto err; 1766 1767 ret->method = meth; 1768 1769 ret->cert_store = NULL; 1770 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1771 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1772 ret->session_cache_head = NULL; 1773 ret->session_cache_tail = NULL; 1774 1775 /* We take the system default */ 1776 ret->session_timeout = meth->get_timeout(); 1777 1778 ret->new_session_cb = 0; 1779 ret->remove_session_cb = 0; 1780 ret->get_session_cb = 0; 1781 ret->generate_session_id = 0; 1782 1783 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1784 1785 ret->references = 1; 1786 ret->quiet_shutdown = 0; 1787 1788/* ret->cipher=NULL; 1789 ret->master_key=NULL; 1790*/ 1791 1792 ret->info_callback = NULL; 1793 1794 ret->app_verify_callback = 0; 1795 ret->app_verify_arg = NULL; 1796 1797 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1798 ret->read_ahead = 0; 1799 ret->msg_callback = 0; 1800 ret->msg_callback_arg = NULL; 1801 ret->verify_mode = SSL_VERIFY_NONE; 1802#if 0 1803 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1804#endif 1805 ret->sid_ctx_length = 0; 1806 ret->default_verify_callback = NULL; 1807 if ((ret->cert = ssl_cert_new()) == NULL) 1808 goto err; 1809 1810 ret->default_passwd_callback = 0; 1811 ret->default_passwd_callback_userdata = NULL; 1812 ret->client_cert_cb = 0; 1813 ret->app_gen_cookie_cb = 0; 1814 ret->app_verify_cookie_cb = 0; 1815 1816 ret->sessions = lh_SSL_SESSION_new(); 1817 if (ret->sessions == NULL) 1818 goto err; 1819 ret->cert_store = X509_STORE_new(); 1820 if (ret->cert_store == NULL) 1821 goto err; 1822 1823 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1824 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1825 if (ret->cipher_list == NULL || 1826 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1827 SSLerr(SSL_F_SSL_CTX_NEW, 1828 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1829 goto err2; 1830 } 1831 1832 ret->param = X509_VERIFY_PARAM_new(); 1833 if (!ret->param) 1834 goto err; 1835 1836 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1837 SSLerr(SSL_F_SSL_CTX_NEW, 1838 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1839 goto err2; 1840 } 1841 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1842 SSLerr(SSL_F_SSL_CTX_NEW, 1843 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1844 goto err2; 1845 } 1846 1847 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1848 goto err; 1849 1850 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1851 1852 ret->extra_certs = NULL; 1853 /* No compression for DTLS */ 1854 if (meth->version != DTLS1_VERSION) 1855 ret->comp_methods = SSL_COMP_get_compression_methods(); 1856 1857 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1858 1859#ifndef OPENSSL_NO_TLSEXT 1860 ret->tlsext_servername_callback = 0; 1861 ret->tlsext_servername_arg = NULL; 1862 /* Setup RFC4507 ticket keys */ 1863 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1864 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1865 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1866 ret->options |= SSL_OP_NO_TICKET; 1867 1868 ret->tlsext_status_cb = 0; 1869 ret->tlsext_status_arg = NULL; 1870 1871# ifndef OPENSSL_NO_NEXTPROTONEG 1872 ret->next_protos_advertised_cb = 0; 1873 ret->next_proto_select_cb = 0; 1874# endif 1875#endif 1876#ifndef OPENSSL_NO_PSK 1877 ret->psk_identity_hint = NULL; 1878 ret->psk_client_callback = NULL; 1879 ret->psk_server_callback = NULL; 1880#endif 1881#ifndef OPENSSL_NO_SRP 1882 SSL_CTX_SRP_CTX_init(ret); 1883#endif 1884#ifndef OPENSSL_NO_ENGINE 1885 ret->client_cert_engine = NULL; 1886#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1887#define eng_strx(x) #x 1888#define eng_str(x) eng_strx(x) 1889 /* Use specific client engine automatically... ignore errors */ 1890 { 1891 ENGINE *eng; 1892 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1893 if (!eng) { 1894 ERR_clear_error(); 1895 ENGINE_load_builtin_engines(); 1896 eng = ENGINE_by_id(eng_str( 1897 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1898 } 1899 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1900 ERR_clear_error(); 1901 } 1902#endif 1903#endif 1904 /* 1905 * Default is to connect to non-RI servers. When RI is more widely 1906 * deployed might change this. 1907 */ 1908 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1909 1910 return (ret); 1911 err: 1912 SSLerr(SSL_F_SSL_CTX_NEW, 1913 ERR_R_MALLOC_FAILURE); 1914 err2: 1915 if (ret != NULL) 1916 SSL_CTX_free(ret); 1917 return (NULL); 1918} 1919 1920#if 0 1921static void 1922SSL_COMP_free(SSL_COMP *comp) 1923 { free(comp); 1924} 1925#endif 1926 1927void 1928SSL_CTX_free(SSL_CTX *a) 1929{ 1930 int i; 1931 1932 if (a == NULL) 1933 return; 1934 1935 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1936 if (i > 0) 1937 return; 1938 1939 if (a->param) 1940 X509_VERIFY_PARAM_free(a->param); 1941 1942 /* 1943 * Free internal session cache. However: the remove_cb() may reference 1944 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1945 * after the sessions were flushed. 1946 * As the ex_data handling routines might also touch the session cache, 1947 * the most secure solution seems to be: empty (flush) the cache, then 1948 * free ex_data, then finally free the cache. 1949 * (See ticket [openssl.org #212].) 1950 */ 1951 if (a->sessions != NULL) 1952 SSL_CTX_flush_sessions(a, 0); 1953 1954 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1955 1956 if (a->sessions != NULL) 1957 lh_SSL_SESSION_free(a->sessions); 1958 1959 if (a->cert_store != NULL) 1960 X509_STORE_free(a->cert_store); 1961 if (a->cipher_list != NULL) 1962 sk_SSL_CIPHER_free(a->cipher_list); 1963 if (a->cipher_list_by_id != NULL) 1964 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1965 if (a->cert != NULL) 1966 ssl_cert_free(a->cert); 1967 if (a->client_CA != NULL) 1968 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1969 if (a->extra_certs != NULL) 1970 sk_X509_pop_free(a->extra_certs, X509_free); 1971#if 0 /* This should never be done, since it removes a global database */ 1972 if (a->comp_methods != NULL) 1973 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1974#else 1975 a->comp_methods = NULL; 1976#endif 1977 1978#ifndef OPENSSL_NO_SRTP 1979 if (a->srtp_profiles) 1980 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1981#endif 1982 1983#ifndef OPENSSL_NO_PSK 1984 if (a->psk_identity_hint) 1985 free(a->psk_identity_hint); 1986#endif 1987#ifndef OPENSSL_NO_SRP 1988 SSL_CTX_SRP_CTX_free(a); 1989#endif 1990#ifndef OPENSSL_NO_ENGINE 1991 if (a->client_cert_engine) 1992 ENGINE_finish(a->client_cert_engine); 1993#endif 1994 1995 free(a); 1996} 1997 1998void 1999SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2000{ 2001 ctx->default_passwd_callback = cb; 2002} 2003 2004void 2005SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2006{ 2007 ctx->default_passwd_callback_userdata = u; 2008} 2009 2010void 2011SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2012 void *), void *arg) 2013{ 2014 ctx->app_verify_callback = cb; 2015 ctx->app_verify_arg = arg; 2016} 2017 2018void 2019SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2020{ 2021 ctx->verify_mode = mode; 2022 ctx->default_verify_callback = cb; 2023} 2024 2025void 2026SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2027{ 2028 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2029} 2030 2031void 2032ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2033{ 2034 CERT_PKEY *cpk; 2035 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2036 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2037 int rsa_tmp_export, dh_tmp_export, kl; 2038 unsigned long mask_k, mask_a, emask_k, emask_a; 2039 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2040#ifndef OPENSSL_NO_ECDH 2041 int have_ecdh_tmp; 2042#endif 2043 X509 *x = NULL; 2044 EVP_PKEY *ecc_pkey = NULL; 2045 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2046 2047 if (c == NULL) 2048 return; 2049 2050 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2051 2052 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2053 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2054 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2055#ifndef OPENSSL_NO_DH 2056 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2057 dh_tmp_export = (c->dh_tmp_cb != NULL || 2058 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2059#else 2060 dh_tmp = dh_tmp_export = 0; 2061#endif 2062 2063#ifndef OPENSSL_NO_ECDH 2064 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2065#endif 2066 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2067 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2068 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2069 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2070 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2071 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2072 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2073 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2074 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2075 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2076 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2077/* FIX THIS EAY EAY EAY */ 2078 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2079 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2080 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2081 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2082 mask_k = 0; 2083 mask_a = 0; 2084 emask_k = 0; 2085 emask_a = 0; 2086 2087 2088 2089#ifdef CIPHER_DEBUG 2090 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2091 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, 2092 rsa_enc, rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2093#endif 2094 2095 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2096 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2097 mask_k |= SSL_kGOST; 2098 mask_a |= SSL_aGOST01; 2099 } 2100 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2101 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2102 mask_k |= SSL_kGOST; 2103 mask_a |= SSL_aGOST94; 2104 } 2105 2106 if (rsa_enc || (rsa_tmp && rsa_sign)) 2107 mask_k|=SSL_kRSA; 2108 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2109 emask_k|=SSL_kRSA; 2110 2111#if 0 2112 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2113 if ((dh_tmp || dh_rsa || dh_dsa) && 2114 (rsa_enc || rsa_sign || dsa_sign)) 2115 mask_k|=SSL_kEDH; 2116 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2117 (rsa_enc || rsa_sign || dsa_sign)) 2118 emask_k|=SSL_kEDH; 2119#endif 2120 2121 if (dh_tmp_export) 2122 emask_k|=SSL_kEDH; 2123 2124 if (dh_tmp) 2125 mask_k|=SSL_kEDH; 2126 2127 if (dh_rsa) 2128 mask_k|=SSL_kDHr; 2129 if (dh_rsa_export) 2130 emask_k|=SSL_kDHr; 2131 2132 if (dh_dsa) 2133 mask_k|=SSL_kDHd; 2134 if (dh_dsa_export) 2135 emask_k|=SSL_kDHd; 2136 2137 if (rsa_enc || rsa_sign) { 2138 mask_a|=SSL_aRSA; 2139 emask_a|=SSL_aRSA; 2140 } 2141 2142 if (dsa_sign) { 2143 mask_a|=SSL_aDSS; 2144 emask_a|=SSL_aDSS; 2145 } 2146 2147 mask_a|=SSL_aNULL; 2148 emask_a|=SSL_aNULL; 2149 2150#ifndef OPENSSL_NO_KRB5 2151 mask_k|=SSL_kKRB5; 2152 mask_a|=SSL_aKRB5; 2153 emask_k|=SSL_kKRB5; 2154 emask_a|=SSL_aKRB5; 2155#endif 2156 2157 /* 2158 * An ECC certificate may be usable for ECDH and/or 2159 * ECDSA cipher suites depending on the key usage extension. 2160 */ 2161 if (have_ecc_cert) { 2162 /* This call populates extension flags (ex_flags) */ 2163 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2164 X509_check_purpose(x, -1, 0); 2165 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2166 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2167 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2168 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2169 ecc_pkey = X509_get_pubkey(x); 2170 ecc_pkey_size = (ecc_pkey != NULL) ? 2171 EVP_PKEY_bits(ecc_pkey) : 0; 2172 EVP_PKEY_free(ecc_pkey); 2173 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2174 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2175 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2176 } 2177#ifndef OPENSSL_NO_ECDH 2178 if (ecdh_ok) { 2179 2180 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2181 mask_k|=SSL_kECDHr; 2182 mask_a|=SSL_aECDH; 2183 if (ecc_pkey_size <= 163) { 2184 emask_k|=SSL_kECDHr; 2185 emask_a|=SSL_aECDH; 2186 } 2187 } 2188 2189 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2190 mask_k|=SSL_kECDHe; 2191 mask_a|=SSL_aECDH; 2192 if (ecc_pkey_size <= 163) { 2193 emask_k|=SSL_kECDHe; 2194 emask_a|=SSL_aECDH; 2195 } 2196 } 2197 } 2198#endif 2199#ifndef OPENSSL_NO_ECDSA 2200 if (ecdsa_ok) { 2201 mask_a|=SSL_aECDSA; 2202 emask_a|=SSL_aECDSA; 2203 } 2204#endif 2205 } 2206 2207#ifndef OPENSSL_NO_ECDH 2208 if (have_ecdh_tmp) { 2209 mask_k|=SSL_kEECDH; 2210 emask_k|=SSL_kEECDH; 2211 } 2212#endif 2213 2214#ifndef OPENSSL_NO_PSK 2215 mask_k |= SSL_kPSK; 2216 mask_a |= SSL_aPSK; 2217 emask_k |= SSL_kPSK; 2218 emask_a |= SSL_aPSK; 2219#endif 2220 2221 c->mask_k = mask_k; 2222 c->mask_a = mask_a; 2223 c->export_mask_k = emask_k; 2224 c->export_mask_a = emask_a; 2225 c->valid = 1; 2226} 2227 2228/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2229#define ku_reject(x, usage) \ 2230 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2231 2232#ifndef OPENSSL_NO_EC 2233 2234int 2235ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2236{ 2237 unsigned long alg_k, alg_a; 2238 EVP_PKEY *pkey = NULL; 2239 int keysize = 0; 2240 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2241 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2242 2243 alg_k = cs->algorithm_mkey; 2244 alg_a = cs->algorithm_auth; 2245 2246 if (SSL_C_IS_EXPORT(cs)) { 2247 /* ECDH key length in export ciphers must be <= 163 bits */ 2248 pkey = X509_get_pubkey(x); 2249 if (pkey == NULL) 2250 return 0; 2251 keysize = EVP_PKEY_bits(pkey); 2252 EVP_PKEY_free(pkey); 2253 if (keysize > 163) 2254 return 0; 2255 } 2256 2257 /* This call populates the ex_flags field correctly */ 2258 X509_check_purpose(x, -1, 0); 2259 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2260 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2261 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2262 } 2263 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2264 /* key usage, if present, must allow key agreement */ 2265 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2266 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2267 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2268 return 0; 2269 } 2270 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2271 TLS1_2_VERSION) { 2272 /* signature alg must be ECDSA */ 2273 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2274 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2275 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2276 return 0; 2277 } 2278 } 2279 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2280 TLS1_2_VERSION) { 2281 /* signature alg must be RSA */ 2282 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2283 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2284 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2285 return 0; 2286 } 2287 } 2288 } 2289 if (alg_a & SSL_aECDSA) { 2290 /* key usage, if present, must allow signing */ 2291 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2292 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2293 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2294 return 0; 2295 } 2296 } 2297 2298 return 1; 2299 /* all checks are ok */ 2300} 2301 2302#endif 2303 2304/* THIS NEEDS CLEANING UP */ 2305CERT_PKEY * 2306ssl_get_server_send_pkey(const SSL *s) 2307{ 2308 unsigned long alg_k, alg_a; 2309 CERT *c; 2310 int i; 2311 2312 c = s->cert; 2313 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2314 2315 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2316 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2317 2318 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2319 /* 2320 * We don't need to look at SSL_kEECDH 2321 * since no certificate is needed for 2322 * anon ECDH and for authenticated 2323 * EECDH, the check for the auth 2324 * algorithm will set i correctly 2325 * NOTE: For ECDH-RSA, we need an ECC 2326 * not an RSA cert but for EECDH-RSA 2327 * we need an RSA cert. Placing the 2328 * checks for SSL_kECDH before RSA 2329 * checks ensures the correct cert is chosen. 2330 */ 2331 i = SSL_PKEY_ECC; 2332 } else if (alg_a & SSL_aECDSA) { 2333 i = SSL_PKEY_ECC; 2334 } else if (alg_k & SSL_kDHr) 2335 i = SSL_PKEY_DH_RSA; 2336 else if (alg_k & SSL_kDHd) 2337 i = SSL_PKEY_DH_DSA; 2338 else if (alg_a & SSL_aDSS) 2339 i = SSL_PKEY_DSA_SIGN; 2340 else if (alg_a & SSL_aRSA) { 2341 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2342 i = SSL_PKEY_RSA_SIGN; 2343 else 2344 i = SSL_PKEY_RSA_ENC; 2345 } else if (alg_a & SSL_aKRB5) { 2346 /* VRS something else here? */ 2347 return (NULL); 2348 } else if (alg_a & SSL_aGOST94) 2349 i = SSL_PKEY_GOST94; 2350 else if (alg_a & SSL_aGOST01) 2351 i = SSL_PKEY_GOST01; 2352 else { /* if (alg_a & SSL_aNULL) */ 2353 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, 2354 ERR_R_INTERNAL_ERROR); 2355 return (NULL); 2356 } 2357 2358 return c->pkeys + i; 2359} 2360 2361X509 * 2362ssl_get_server_send_cert(const SSL *s) 2363{ 2364 CERT_PKEY *cpk; 2365 2366 cpk = ssl_get_server_send_pkey(s); 2367 if (!cpk) 2368 return NULL; 2369 return cpk->x509; 2370} 2371 2372EVP_PKEY * 2373ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2374{ 2375 unsigned long alg_a; 2376 CERT *c; 2377 int idx = -1; 2378 2379 alg_a = cipher->algorithm_auth; 2380 c = s->cert; 2381 2382 if ((alg_a & SSL_aDSS) && 2383 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2384 idx = SSL_PKEY_DSA_SIGN; 2385 else if (alg_a & SSL_aRSA) { 2386 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2387 idx = SSL_PKEY_RSA_SIGN; 2388 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2389 idx = SSL_PKEY_RSA_ENC; 2390 } else if ((alg_a & SSL_aECDSA) && 2391 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2392 idx = SSL_PKEY_ECC; 2393 if (idx == -1) { 2394 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, 2395 ERR_R_INTERNAL_ERROR); 2396 return (NULL); 2397 } 2398 if (pmd) 2399 *pmd = c->pkeys[idx].digest; 2400 return c->pkeys[idx].privatekey; 2401} 2402 2403void 2404ssl_update_cache(SSL *s, int mode) 2405{ 2406 int i; 2407 2408 /* 2409 * If the session_id_length is 0, we are not supposed to cache it, 2410 * and it would be rather hard to do anyway :-) 2411 */ 2412 if (s->session->session_id_length == 0) 2413 return; 2414 2415 i = s->session_ctx->session_cache_mode; 2416 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2417 || SSL_CTX_add_session(s->session_ctx, s->session)) 2418 && (s->session_ctx->new_session_cb != NULL)) { 2419 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2420 if (!s->session_ctx->new_session_cb(s, s->session)) 2421 SSL_SESSION_free(s->session); 2422 } 2423 2424 /* auto flush every 255 connections */ 2425 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2426 ((i & mode) == mode)) { 2427 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2428 s->session_ctx->stats.sess_connect_good : 2429 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2430 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2431 } 2432 } 2433} 2434 2435const SSL_METHOD * 2436SSL_get_ssl_method(SSL *s) 2437{ 2438 return (s->method); 2439} 2440 2441int 2442SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2443{ 2444 int conn = -1; 2445 int ret = 1; 2446 2447 if (s->method != meth) { 2448 if (s->handshake_func != NULL) 2449 conn = (s->handshake_func == s->method->ssl_connect); 2450 2451 if (s->method->version == meth->version) 2452 s->method = meth; 2453 else { 2454 s->method->ssl_free(s); 2455 s->method = meth; 2456 ret = s->method->ssl_new(s); 2457 } 2458 2459 if (conn == 1) 2460 s->handshake_func = meth->ssl_connect; 2461 else if (conn == 0) 2462 s->handshake_func = meth->ssl_accept; 2463 } 2464 return (ret); 2465} 2466 2467int 2468SSL_get_error(const SSL *s, int i) 2469{ 2470 int reason; 2471 unsigned long l; 2472 BIO *bio; 2473 2474 if (i > 0) 2475 return (SSL_ERROR_NONE); 2476 2477 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2478 * etc, where we do encode the error */ 2479 if ((l = ERR_peek_error()) != 0) { 2480 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2481 return (SSL_ERROR_SYSCALL); 2482 else 2483 return (SSL_ERROR_SSL); 2484 } 2485 2486 if ((i < 0) && SSL_want_read(s)) { 2487 bio = SSL_get_rbio(s); 2488 if (BIO_should_read(bio)) 2489 return (SSL_ERROR_WANT_READ); 2490 else if (BIO_should_write(bio)) 2491 /* 2492 * This one doesn't make too much sense... We never 2493 * try to write to the rbio, and an application 2494 * program where rbio and wbio are separate couldn't 2495 * even know what it should wait for. However if we 2496 * ever set s->rwstate incorrectly (so that we have 2497 * SSL_want_read(s) instead of SSL_want_write(s)) 2498 * and rbio and wbio *are* the same, this test works 2499 * around that bug; so it might be safer to keep it. 2500 */ 2501 return (SSL_ERROR_WANT_WRITE); 2502 else if (BIO_should_io_special(bio)) { 2503 reason = BIO_get_retry_reason(bio); 2504 if (reason == BIO_RR_CONNECT) 2505 return (SSL_ERROR_WANT_CONNECT); 2506 else if (reason == BIO_RR_ACCEPT) 2507 return (SSL_ERROR_WANT_ACCEPT); 2508 else 2509 return(SSL_ERROR_SYSCALL); /* unknown */ 2510 } 2511 } 2512 2513 if ((i < 0) && SSL_want_write(s)) { 2514 bio = SSL_get_wbio(s); 2515 if (BIO_should_write(bio)) 2516 return (SSL_ERROR_WANT_WRITE); 2517 else if (BIO_should_read(bio)) 2518 return (SSL_ERROR_WANT_READ); 2519 /* 2520 * See above (SSL_want_read(s) with 2521 * BIO_should_write(bio)) 2522 */ 2523 else if (BIO_should_io_special(bio)) { 2524 reason = BIO_get_retry_reason(bio); 2525 if (reason == BIO_RR_CONNECT) 2526 return (SSL_ERROR_WANT_CONNECT); 2527 else if (reason == BIO_RR_ACCEPT) 2528 return (SSL_ERROR_WANT_ACCEPT); 2529 else 2530 return (SSL_ERROR_SYSCALL); 2531 } 2532 } 2533 if ((i < 0) && SSL_want_x509_lookup(s)) { 2534 return (SSL_ERROR_WANT_X509_LOOKUP); 2535 } 2536 2537 if (i == 0) { 2538 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2539 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2540 return (SSL_ERROR_ZERO_RETURN); 2541 } 2542 return (SSL_ERROR_SYSCALL); 2543} 2544 2545int 2546SSL_do_handshake(SSL *s) 2547{ 2548 int ret = 1; 2549 2550 if (s->handshake_func == NULL) { 2551 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2552 SSL_R_CONNECTION_TYPE_NOT_SET); 2553 return (-1); 2554 } 2555 2556 s->method->ssl_renegotiate_check(s); 2557 2558 if (SSL_in_init(s) || SSL_in_before(s)) { 2559 ret = s->handshake_func(s); 2560 } 2561 return (ret); 2562} 2563 2564/* 2565 * For the next 2 functions, SSL_clear() sets shutdown and so 2566 * one of these calls will reset it 2567 */ 2568void 2569SSL_set_accept_state(SSL *s) 2570{ 2571 s->server = 1; 2572 s->shutdown = 0; 2573 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2574 s->handshake_func = s->method->ssl_accept; 2575 /* clear the current cipher */ 2576 ssl_clear_cipher_ctx(s); 2577 ssl_clear_hash_ctx(&s->read_hash); 2578 ssl_clear_hash_ctx(&s->write_hash); 2579} 2580 2581void 2582SSL_set_connect_state(SSL *s) 2583{ 2584 s->server = 0; 2585 s->shutdown = 0; 2586 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2587 s->handshake_func = s->method->ssl_connect; 2588 /* clear the current cipher */ 2589 ssl_clear_cipher_ctx(s); 2590 ssl_clear_hash_ctx(&s->read_hash); 2591 ssl_clear_hash_ctx(&s->write_hash); 2592} 2593 2594int 2595ssl_undefined_function(SSL *s) 2596{ 2597 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2598 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2599 return (0); 2600} 2601 2602int 2603ssl_undefined_void_function(void) 2604{ 2605 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2606 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2607 return (0); 2608} 2609 2610int 2611ssl_undefined_const_function(const SSL *s) 2612{ 2613 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2614 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2615 return (0); 2616} 2617 2618SSL_METHOD * 2619ssl_bad_method(int ver) 2620{ 2621 SSLerr(SSL_F_SSL_BAD_METHOD, 2622 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2623 return (NULL); 2624} 2625 2626const char * 2627SSL_get_version(const SSL *s) 2628{ 2629 if (s->version == TLS1_2_VERSION) 2630 return("TLSv1.2"); 2631 else if (s->version == TLS1_1_VERSION) 2632 return("TLSv1.1"); 2633 else if (s->version == TLS1_VERSION) 2634 return("TLSv1"); 2635 else if (s->version == SSL3_VERSION) 2636 return("SSLv3"); 2637 else 2638 return("unknown"); 2639} 2640 2641SSL * 2642SSL_dup(SSL *s) 2643{ 2644 STACK_OF(X509_NAME) *sk; 2645 X509_NAME *xn; 2646 SSL *ret; 2647 int i; 2648 2649 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2650 return (NULL); 2651 2652 ret->version = s->version; 2653 ret->type = s->type; 2654 ret->method = s->method; 2655 2656 if (s->session != NULL) { 2657 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2658 SSL_copy_session_id(ret, s); 2659 } else { 2660 /* 2661 * No session has been established yet, so we have to expect 2662 * that s->cert or ret->cert will be changed later -- 2663 * they should not both point to the same object, 2664 * and thus we can't use SSL_copy_session_id. 2665 */ 2666 2667 ret->method->ssl_free(ret); 2668 ret->method = s->method; 2669 ret->method->ssl_new(ret); 2670 2671 if (s->cert != NULL) { 2672 if (ret->cert != NULL) { 2673 ssl_cert_free(ret->cert); 2674 } 2675 ret->cert = ssl_cert_dup(s->cert); 2676 if (ret->cert == NULL) 2677 goto err; 2678 } 2679 2680 SSL_set_session_id_context(ret, 2681 s->sid_ctx, s->sid_ctx_length); 2682 } 2683 2684 ret->options = s->options; 2685 ret->mode = s->mode; 2686 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2687 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2688 ret->msg_callback = s->msg_callback; 2689 ret->msg_callback_arg = s->msg_callback_arg; 2690 SSL_set_verify(ret, SSL_get_verify_mode(s), 2691 SSL_get_verify_callback(s)); 2692 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2693 ret->generate_session_id = s->generate_session_id; 2694 2695 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2696 2697 ret->debug = s->debug; 2698 2699 /* copy app data, a little dangerous perhaps */ 2700 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2701 &ret->ex_data, &s->ex_data)) 2702 goto err; 2703 2704 /* setup rbio, and wbio */ 2705 if (s->rbio != NULL) { 2706 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2707 goto err; 2708 } 2709 if (s->wbio != NULL) { 2710 if (s->wbio != s->rbio) { 2711 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2712 goto err; 2713 } else 2714 ret->wbio = ret->rbio; 2715 } 2716 ret->rwstate = s->rwstate; 2717 ret->in_handshake = s->in_handshake; 2718 ret->handshake_func = s->handshake_func; 2719 ret->server = s->server; 2720 ret->renegotiate = s->renegotiate; 2721 ret->new_session = s->new_session; 2722 ret->quiet_shutdown = s->quiet_shutdown; 2723 ret->shutdown = s->shutdown; 2724 /* SSL_dup does not really work at any state, though */ 2725 ret->state=s->state; 2726 ret->rstate = s->rstate; 2727 2728 /* 2729 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2730 * ret->init_off 2731 */ 2732 ret->init_num = 0; 2733 2734 ret->hit = s->hit; 2735 2736 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2737 2738 /* dup the cipher_list and cipher_list_by_id stacks */ 2739 if (s->cipher_list != NULL) { 2740 if ((ret->cipher_list = 2741 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2742 goto err; 2743 } 2744 if (s->cipher_list_by_id != NULL) 2745 if ((ret->cipher_list_by_id = 2746 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2747 goto err; 2748 2749 /* Dup the client_CA list */ 2750 if (s->client_CA != NULL) { 2751 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2752 ret->client_CA = sk; 2753 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2754 xn = sk_X509_NAME_value(sk, i); 2755 if (sk_X509_NAME_set(sk, i, 2756 X509_NAME_dup(xn)) == NULL) { 2757 X509_NAME_free(xn); 2758 goto err; 2759 } 2760 } 2761 } 2762 2763 if (0) { 2764 err: 2765 if (ret != NULL) 2766 SSL_free(ret); 2767 ret = NULL; 2768 } 2769 return (ret); 2770} 2771 2772void 2773ssl_clear_cipher_ctx(SSL *s) 2774{ 2775 if (s->enc_read_ctx != NULL) { 2776 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2777 free(s->enc_read_ctx); 2778 s->enc_read_ctx = NULL; 2779 } 2780 if (s->enc_write_ctx != NULL) { 2781 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2782 free(s->enc_write_ctx); 2783 s->enc_write_ctx = NULL; 2784 } 2785#ifndef OPENSSL_NO_COMP 2786 if (s->expand != NULL) { 2787 COMP_CTX_free(s->expand); 2788 s->expand = NULL; 2789 } 2790 if (s->compress != NULL) { 2791 COMP_CTX_free(s->compress); 2792 s->compress = NULL; 2793 } 2794#endif 2795} 2796 2797/* Fix this function so that it takes an optional type parameter */ 2798X509 * 2799SSL_get_certificate(const SSL *s) 2800{ 2801 if (s->cert != NULL) 2802 return (s->cert->key->x509); 2803 else 2804 return (NULL); 2805} 2806 2807/* Fix this function so that it takes an optional type parameter */ 2808EVP_PKEY * 2809SSL_get_privatekey(SSL *s) 2810{ 2811 if (s->cert != NULL) 2812 return (s->cert->key->privatekey); 2813 else 2814 return (NULL); 2815} 2816 2817const SSL_CIPHER * 2818SSL_get_current_cipher(const SSL *s) 2819{ 2820 if ((s->session != NULL) && (s->session->cipher != NULL)) 2821 return (s->session->cipher); 2822 return (NULL); 2823} 2824#ifdef OPENSSL_NO_COMP 2825const void * 2826SSL_get_current_compression(SSL *s) 2827{ 2828 return NULL; 2829} 2830 2831const void * 2832SSL_get_current_expansion(SSL *s) 2833{ 2834 return NULL; 2835} 2836#else 2837 2838const COMP_METHOD * 2839SSL_get_current_compression(SSL *s) 2840{ 2841 if (s->compress != NULL) 2842 return (s->compress->meth); 2843 return (NULL); 2844} 2845 2846const COMP_METHOD * 2847SSL_get_current_expansion(SSL *s) 2848{ 2849 if (s->expand != NULL) 2850 return (s->expand->meth); 2851 return (NULL); 2852} 2853#endif 2854 2855int 2856ssl_init_wbio_buffer(SSL *s, int push) 2857{ 2858 BIO *bbio; 2859 2860 if (s->bbio == NULL) { 2861 bbio = BIO_new(BIO_f_buffer()); 2862 if (bbio == NULL) 2863 return (0); 2864 s->bbio = bbio; 2865 } else { 2866 bbio = s->bbio; 2867 if (s->bbio == s->wbio) 2868 s->wbio = BIO_pop(s->wbio); 2869 } 2870 (void)BIO_reset(bbio); 2871/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2872 if (!BIO_set_read_buffer_size(bbio, 1)) { 2873 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2874 ERR_R_BUF_LIB); 2875 return (0); 2876 } 2877 if (push) { 2878 if (s->wbio != bbio) 2879 s->wbio = BIO_push(bbio, s->wbio); 2880 } else { 2881 if (s->wbio == bbio) 2882 s->wbio = BIO_pop(bbio); 2883 } 2884 return (1); 2885} 2886 2887void 2888ssl_free_wbio_buffer(SSL *s) 2889{ 2890 if (s->bbio == NULL) 2891 return; 2892 2893 if (s->bbio == s->wbio) { 2894 /* remove buffering */ 2895 s->wbio = BIO_pop(s->wbio); 2896 } 2897 BIO_free(s->bbio); 2898 s->bbio = NULL; 2899} 2900 2901void 2902SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2903{ 2904 ctx->quiet_shutdown = mode; 2905} 2906 2907int 2908SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2909{ 2910 return (ctx->quiet_shutdown); 2911} 2912 2913void 2914SSL_set_quiet_shutdown(SSL *s, int mode) 2915{ 2916 s->quiet_shutdown = mode; 2917} 2918 2919int 2920SSL_get_quiet_shutdown(const SSL *s) 2921{ 2922 return (s->quiet_shutdown); 2923} 2924 2925void 2926SSL_set_shutdown(SSL *s, int mode) 2927{ 2928 s->shutdown = mode; 2929} 2930 2931int 2932SSL_get_shutdown(const SSL *s) 2933{ 2934 return (s->shutdown); 2935} 2936 2937int 2938SSL_version(const SSL *s) 2939{ 2940 return (s->version); 2941} 2942 2943SSL_CTX * 2944SSL_get_SSL_CTX(const SSL *ssl) 2945{ 2946 return (ssl->ctx); 2947} 2948 2949SSL_CTX * 2950SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2951{ 2952 if (ssl->ctx == ctx) 2953 return ssl->ctx; 2954#ifndef OPENSSL_NO_TLSEXT 2955 if (ctx == NULL) 2956 ctx = ssl->initial_ctx; 2957#endif 2958 if (ssl->cert != NULL) 2959 ssl_cert_free(ssl->cert); 2960 ssl->cert = ssl_cert_dup(ctx->cert); 2961 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2962 if (ssl->ctx != NULL) 2963 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2964 ssl->ctx = ctx; 2965 return (ssl->ctx); 2966} 2967 2968#ifndef OPENSSL_NO_STDIO 2969int 2970SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2971{ 2972 return (X509_STORE_set_default_paths(ctx->cert_store)); 2973} 2974 2975int 2976SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2977 const char *CApath) 2978{ 2979 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2980} 2981#endif 2982 2983void 2984SSL_set_info_callback(SSL *ssl, 2985 void (*cb)(const SSL *ssl, int type, int val)) 2986{ 2987 ssl->info_callback = cb; 2988} 2989 2990/* 2991 * One compiler (Diab DCC) doesn't like argument names in returned 2992 * function pointer. 2993 */ 2994void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2995{ 2996 return ssl->info_callback; 2997} 2998 2999int 3000SSL_state(const SSL *ssl) 3001{ 3002 return (ssl->state); 3003} 3004 3005void 3006SSL_set_state(SSL *ssl, int state) 3007{ 3008 ssl->state = state; 3009} 3010 3011void 3012SSL_set_verify_result(SSL *ssl, long arg) 3013{ 3014 ssl->verify_result = arg; 3015} 3016 3017long 3018SSL_get_verify_result(const SSL *ssl) 3019{ 3020 return (ssl->verify_result); 3021} 3022 3023int 3024SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3025 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3026{ 3027 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3028 new_func, dup_func, free_func); 3029} 3030 3031int 3032SSL_set_ex_data(SSL *s, int idx, void *arg) 3033{ 3034 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3035} 3036 3037void * 3038SSL_get_ex_data(const SSL *s, int idx) 3039{ 3040 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3041} 3042 3043int 3044SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3045 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3046{ 3047 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3048 new_func, dup_func, free_func); 3049} 3050 3051int 3052SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3053{ 3054 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3055} 3056 3057void * 3058SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3059{ 3060 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3061} 3062 3063int 3064ssl_ok(SSL *s) 3065{ 3066 return (1); 3067} 3068 3069X509_STORE * 3070SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3071{ 3072 return (ctx->cert_store); 3073} 3074 3075void 3076SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3077{ 3078 if (ctx->cert_store != NULL) 3079 X509_STORE_free(ctx->cert_store); 3080 ctx->cert_store = store; 3081} 3082 3083int 3084SSL_want(const SSL *s) 3085{ 3086 return (s->rwstate); 3087} 3088 3089/*! 3090 * \brief Set the callback for generating temporary RSA keys. 3091 * \param ctx the SSL context. 3092 * \param cb the callback 3093 */ 3094 3095void 3096SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 3097 int is_export, 3098int keylength)) 3099{ 3100 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3101} 3102 3103void 3104SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 3105 int is_export, 3106int keylength)) 3107{ 3108 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3109} 3110 3111#ifdef DOXYGEN 3112/*! 3113 * \brief The RSA temporary key callback function. 3114 * \param ssl the SSL session. 3115 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3116 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3117 * of the required key in bits. 3118 * \return the temporary RSA key. 3119 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3120 */ 3121 3122RSA * 3123cb(SSL *ssl, int is_export, int keylength) 3124{} 3125#endif 3126 3127/*! 3128 * \brief Set the callback for generating temporary DH keys. 3129 * \param ctx the SSL context. 3130 * \param dh the callback 3131 */ 3132 3133#ifndef OPENSSL_NO_DH 3134void 3135SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3136 int keylength)) 3137{ 3138 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3139} 3140 3141void 3142SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3143 int keylength)) 3144{ 3145 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3146} 3147#endif 3148 3149#ifndef OPENSSL_NO_ECDH 3150void 3151SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3152 int is_export, int keylength)) 3153{ 3154 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3155 (void (*)(void))ecdh); 3156} 3157 3158void 3159SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3160 int keylength)) 3161{ 3162 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3163} 3164#endif 3165 3166#ifndef OPENSSL_NO_PSK 3167int 3168SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3169{ 3170 if (identity_hint != NULL && strlen(identity_hint) > 3171 PSK_MAX_IDENTITY_LEN) { 3172 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3173 SSL_R_DATA_LENGTH_TOO_LONG); 3174 return 0; 3175 } 3176 if (ctx->psk_identity_hint != NULL) 3177 free(ctx->psk_identity_hint); 3178 if (identity_hint != NULL) { 3179 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3180 if (ctx->psk_identity_hint == NULL) 3181 return 0; 3182 } else 3183 ctx->psk_identity_hint = NULL; 3184 return 1; 3185} 3186 3187int 3188SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3189{ 3190 if (s == NULL) 3191 return 0; 3192 3193 if (s->session == NULL) 3194 return 1; /* session not created yet, ignored */ 3195 3196 if (identity_hint != NULL && strlen(identity_hint) > 3197 PSK_MAX_IDENTITY_LEN) { 3198 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 3199 SSL_R_DATA_LENGTH_TOO_LONG); 3200 return 0; 3201 } 3202 if (s->session->psk_identity_hint != NULL) 3203 free(s->session->psk_identity_hint); 3204 if (identity_hint != NULL) { 3205 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3206 if (s->session->psk_identity_hint == NULL) 3207 return 0; 3208 } else 3209 s->session->psk_identity_hint = NULL; 3210 return 1; 3211} 3212 3213const char * 3214SSL_get_psk_identity_hint(const SSL *s) 3215{ 3216 if (s == NULL || s->session == NULL) 3217 return NULL; 3218 return (s->session->psk_identity_hint); 3219} 3220 3221const char * 3222SSL_get_psk_identity(const SSL *s) 3223{ 3224 if (s == NULL || s->session == NULL) 3225 return NULL; 3226 return (s->session->psk_identity); 3227} 3228 3229void 3230SSL_set_psk_client_callback(SSL *s, 3231 unsigned int (*cb)(SSL *ssl, const char *hint, 3232 char *identity, unsigned int max_identity_len, unsigned char *psk, 3233 unsigned int max_psk_len)) 3234{ 3235 s->psk_client_callback = cb; 3236} 3237 3238void 3239SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3240 unsigned int (*cb)(SSL *ssl, const char *hint, 3241 char *identity, unsigned int max_identity_len, unsigned char *psk, 3242 unsigned int max_psk_len)) 3243{ 3244 ctx->psk_client_callback = cb; 3245} 3246 3247void 3248SSL_set_psk_server_callback(SSL *s, 3249 unsigned int (*cb)(SSL *ssl, const char *identity, 3250 unsigned char *psk, unsigned int max_psk_len)) 3251{ 3252 s->psk_server_callback = cb; 3253} 3254 3255void 3256SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3257 unsigned int (*cb)(SSL *ssl, const char *identity, 3258 unsigned char *psk, unsigned int max_psk_len)) 3259{ 3260 ctx->psk_server_callback = cb; 3261} 3262#endif 3263 3264void 3265SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3266 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3267{ 3268 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3269 (void (*)(void))cb); 3270} 3271 3272void 3273SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3274 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3275{ 3276 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3277} 3278 3279/* 3280 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3281 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3282 * any. If EVP_MD pointer is passed, initializes ctx with this md 3283 * Returns newly allocated ctx; 3284 */ 3285EVP_MD_CTX * 3286ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3287{ 3288 ssl_clear_hash_ctx(hash); 3289 *hash = EVP_MD_CTX_create(); 3290 if (md) 3291 EVP_DigestInit_ex(*hash, md, NULL); 3292 return *hash; 3293} 3294 3295void 3296ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3297{ 3298 if (*hash) 3299 EVP_MD_CTX_destroy(*hash); 3300 *hash = NULL; 3301} 3302 3303void 3304SSL_set_debug(SSL *s, int debug) 3305{ 3306 s->debug = debug; 3307} 3308 3309int 3310SSL_cache_hit(SSL *s) 3311{ 3312 return s->hit; 3313} 3314 3315IMPLEMENT_STACK_OF(SSL_CIPHER) 3316IMPLEMENT_STACK_OF(SSL_COMP) 3317IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3318 ssl_cipher_id); 3319