ssl_lib.c revision 1.41
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 778(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 779{ 780 return (s->verify_callback); 781} 782 783int 784SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 785{ 786 return (ctx->verify_mode); 787} 788 789int 790SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 791{ 792 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 793} 794 795int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 796{ 797 return (ctx->default_verify_callback); 798} 799 800void 801SSL_set_verify(SSL *s, int mode, 802 int (*callback)(int ok, X509_STORE_CTX *ctx)) 803{ 804 s->verify_mode = mode; 805 if (callback != NULL) 806 s->verify_callback = callback; 807} 808 809void 810SSL_set_verify_depth(SSL *s, int depth) 811{ 812 X509_VERIFY_PARAM_set_depth(s->param, depth); 813} 814 815void 816SSL_set_read_ahead(SSL *s, int yes) 817{ 818 s->read_ahead = yes; 819} 820 821int 822SSL_get_read_ahead(const SSL *s) 823{ 824 return (s->read_ahead); 825} 826 827int 828SSL_pending(const SSL *s) 829{ 830 /* 831 * SSL_pending cannot work properly if read-ahead is enabled 832 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 833 * and it is impossible to fix since SSL_pending cannot report 834 * errors that may be observed while scanning the new data. 835 * (Note that SSL_pending() is often used as a boolean value, 836 * so we'd better not return -1.) 837 */ 838 return (s->method->ssl_pending(s)); 839} 840 841X509 * 842SSL_get_peer_certificate(const SSL *s) 843{ 844 X509 *r; 845 846 if ((s == NULL) || (s->session == NULL)) 847 r = NULL; 848 else 849 r = s->session->peer; 850 851 if (r == NULL) 852 return (r); 853 854 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 855 856 return (r); 857} 858 859STACK_OF(X509) * 860SSL_get_peer_cert_chain(const SSL *s) 861{ 862 STACK_OF(X509) *r; 863 864 if ((s == NULL) || (s->session == NULL) || 865 (s->session->sess_cert == NULL)) 866 r = NULL; 867 else 868 r = s->session->sess_cert->cert_chain; 869 870 /* 871 * If we are a client, cert_chain includes the peer's own 872 * certificate; 873 * if we are a server, it does not. 874 */ 875 return (r); 876} 877 878/* 879 * Now in theory, since the calling process own 't' it should be safe to 880 * modify. We need to be able to read f without being hassled 881 */ 882void 883SSL_copy_session_id(SSL *t, const SSL *f) 884{ 885 CERT *tmp; 886 887 /* Do we need to to SSL locking? */ 888 SSL_set_session(t, SSL_get_session(f)); 889 890 /* 891 * What if we are setup as SSLv2 but want to talk SSLv3 or 892 * vice-versa. 893 */ 894 if (t->method != f->method) { 895 t->method->ssl_free(t); /* cleanup current */ 896 t->method=f->method; /* change method */ 897 t->method->ssl_new(t); /* setup new */ 898 } 899 900 tmp = t->cert; 901 if (f->cert != NULL) { 902 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 903 t->cert = f->cert; 904 } else 905 t->cert = NULL; 906 if (tmp != NULL) 907 ssl_cert_free(tmp); 908 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 909} 910 911/* Fix this so it checks all the valid key/cert options */ 912int 913SSL_CTX_check_private_key(const SSL_CTX *ctx) 914{ 915 if ((ctx == NULL) || (ctx->cert == NULL) || 916 (ctx->cert->key->x509 == NULL)) { 917 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 918 SSL_R_NO_CERTIFICATE_ASSIGNED); 919 return (0); 920 } 921 if (ctx->cert->key->privatekey == NULL) { 922 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 923 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 924 return (0); 925 } 926 return (X509_check_private_key(ctx->cert->key->x509, 927 ctx->cert->key->privatekey)); 928} 929 930/* Fix this function so that it takes an optional type parameter */ 931int 932SSL_check_private_key(const SSL *ssl) 933{ 934 if (ssl == NULL) { 935 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 936 ERR_R_PASSED_NULL_PARAMETER); 937 return (0); 938 } 939 if (ssl->cert == NULL) { 940 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 941 SSL_R_NO_CERTIFICATE_ASSIGNED); 942 return (0); 943 } 944 if (ssl->cert->key->x509 == NULL) { 945 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 946 SSL_R_NO_CERTIFICATE_ASSIGNED); 947 return (0); 948 } 949 if (ssl->cert->key->privatekey == NULL) { 950 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 951 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 952 return (0); 953 } 954 return (X509_check_private_key(ssl->cert->key->x509, 955 ssl->cert->key->privatekey)); 956} 957 958int 959SSL_accept(SSL *s) 960{ 961 if (s->handshake_func == 0) 962 SSL_set_accept_state(s); /* Not properly initialized yet */ 963 964 return (s->method->ssl_accept(s)); 965} 966 967int 968SSL_connect(SSL *s) 969{ 970 if (s->handshake_func == 0) 971 SSL_set_connect_state(s); /* Not properly initialized yet */ 972 973 return (s->method->ssl_connect(s)); 974} 975 976long 977SSL_get_default_timeout(const SSL *s) 978{ 979 return (s->method->get_timeout()); 980} 981 982int 983SSL_read(SSL *s, void *buf, int num) 984{ 985 if (s->handshake_func == 0) { 986 SSLerr(SSL_F_SSL_READ, 987 SSL_R_UNINITIALIZED); 988 return (-1); 989 } 990 991 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 992 s->rwstate = SSL_NOTHING; 993 return (0); 994 } 995 return (s->method->ssl_read(s, buf, num)); 996} 997 998int 999SSL_peek(SSL *s, void *buf, int num) 1000{ 1001 if (s->handshake_func == 0) { 1002 SSLerr(SSL_F_SSL_PEEK, 1003 SSL_R_UNINITIALIZED); 1004 return (-1); 1005 } 1006 1007 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1008 return (0); 1009 } 1010 return (s->method->ssl_peek(s, buf, num)); 1011} 1012 1013int 1014SSL_write(SSL *s, const void *buf, int num) 1015{ 1016 if (s->handshake_func == 0) { 1017 SSLerr(SSL_F_SSL_WRITE, 1018 SSL_R_UNINITIALIZED); 1019 return (-1); 1020 } 1021 1022 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1023 s->rwstate = SSL_NOTHING; 1024 SSLerr(SSL_F_SSL_WRITE, 1025 SSL_R_PROTOCOL_IS_SHUTDOWN); 1026 return (-1); 1027 } 1028 return (s->method->ssl_write(s, buf, num)); 1029} 1030 1031int 1032SSL_shutdown(SSL *s) 1033{ 1034 /* 1035 * Note that this function behaves differently from what one might 1036 * expect. Return values are 0 for no success (yet), 1037 * 1 for success; but calling it once is usually not enough, 1038 * even if blocking I/O is used (see ssl3_shutdown). 1039 */ 1040 1041 if (s->handshake_func == 0) { 1042 SSLerr(SSL_F_SSL_SHUTDOWN, 1043 SSL_R_UNINITIALIZED); 1044 return (-1); 1045 } 1046 1047 if ((s != NULL) && !SSL_in_init(s)) 1048 return (s->method->ssl_shutdown(s)); 1049 else 1050 return (1); 1051} 1052 1053int 1054SSL_renegotiate(SSL *s) 1055{ 1056 if (s->renegotiate == 0) 1057 s->renegotiate = 1; 1058 1059 s->new_session = 1; 1060 1061 return (s->method->ssl_renegotiate(s)); 1062} 1063 1064int 1065SSL_renegotiate_abbreviated(SSL *s) 1066{ 1067 if (s->renegotiate == 0) 1068 s->renegotiate = 1; 1069 1070 s->new_session = 0; 1071 1072 return (s->method->ssl_renegotiate(s)); 1073} 1074 1075int 1076SSL_renegotiate_pending(SSL *s) 1077{ 1078 /* 1079 * Becomes true when negotiation is requested; 1080 * false again once a handshake has finished. 1081 */ 1082 return (s->renegotiate != 0); 1083} 1084 1085long 1086SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1087{ 1088 long l; 1089 1090 switch (cmd) { 1091 case SSL_CTRL_GET_READ_AHEAD: 1092 return (s->read_ahead); 1093 case SSL_CTRL_SET_READ_AHEAD: 1094 l = s->read_ahead; 1095 s->read_ahead = larg; 1096 return (l); 1097 1098 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1099 s->msg_callback_arg = parg; 1100 return (1); 1101 1102 case SSL_CTRL_OPTIONS: 1103 return (s->options|=larg); 1104 case SSL_CTRL_CLEAR_OPTIONS: 1105 return (s->options&=~larg); 1106 case SSL_CTRL_MODE: 1107 return (s->mode|=larg); 1108 case SSL_CTRL_CLEAR_MODE: 1109 return (s->mode &=~larg); 1110 case SSL_CTRL_GET_MAX_CERT_LIST: 1111 return (s->max_cert_list); 1112 case SSL_CTRL_SET_MAX_CERT_LIST: 1113 l = s->max_cert_list; 1114 s->max_cert_list = larg; 1115 return (l); 1116 case SSL_CTRL_SET_MTU: 1117#ifndef OPENSSL_NO_DTLS1 1118 if (larg < (long)dtls1_min_mtu()) 1119 return (0); 1120#endif 1121 1122 if (SSL_version(s) == DTLS1_VERSION || 1123 SSL_version(s) == DTLS1_BAD_VER) { 1124 s->d1->mtu = larg; 1125 return (larg); 1126 } 1127 return (0); 1128 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1129 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1130 return (0); 1131 s->max_send_fragment = larg; 1132 return (1); 1133 case SSL_CTRL_GET_RI_SUPPORT: 1134 if (s->s3) 1135 return (s->s3->send_connection_binding); 1136 else return (0); 1137 default: 1138 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1139 } 1140} 1141 1142long 1143SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1144{ 1145 switch (cmd) { 1146 case SSL_CTRL_SET_MSG_CALLBACK: 1147 s->msg_callback = (void (*)(int write_p, int version, 1148 int content_type, const void *buf, size_t len, 1149 SSL *ssl, void *arg))(fp); 1150 return (1); 1151 1152 default: 1153 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1154 } 1155} 1156 1157LHASH_OF(SSL_SESSION) * 1158SSL_CTX_sessions(SSL_CTX *ctx) 1159{ 1160 return (ctx->sessions); 1161} 1162 1163long 1164SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1165{ 1166 long l; 1167 1168 switch (cmd) { 1169 case SSL_CTRL_GET_READ_AHEAD: 1170 return (ctx->read_ahead); 1171 case SSL_CTRL_SET_READ_AHEAD: 1172 l = ctx->read_ahead; 1173 ctx->read_ahead = larg; 1174 return (l); 1175 1176 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1177 ctx->msg_callback_arg = parg; 1178 return (1); 1179 1180 case SSL_CTRL_GET_MAX_CERT_LIST: 1181 return (ctx->max_cert_list); 1182 case SSL_CTRL_SET_MAX_CERT_LIST: 1183 l = ctx->max_cert_list; 1184 ctx->max_cert_list = larg; 1185 return (l); 1186 1187 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1188 l = ctx->session_cache_size; 1189 ctx->session_cache_size = larg; 1190 return (l); 1191 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1192 return (ctx->session_cache_size); 1193 case SSL_CTRL_SET_SESS_CACHE_MODE: 1194 l = ctx->session_cache_mode; 1195 ctx->session_cache_mode = larg; 1196 return (l); 1197 case SSL_CTRL_GET_SESS_CACHE_MODE: 1198 return (ctx->session_cache_mode); 1199 1200 case SSL_CTRL_SESS_NUMBER: 1201 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1202 case SSL_CTRL_SESS_CONNECT: 1203 return (ctx->stats.sess_connect); 1204 case SSL_CTRL_SESS_CONNECT_GOOD: 1205 return (ctx->stats.sess_connect_good); 1206 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1207 return (ctx->stats.sess_connect_renegotiate); 1208 case SSL_CTRL_SESS_ACCEPT: 1209 return (ctx->stats.sess_accept); 1210 case SSL_CTRL_SESS_ACCEPT_GOOD: 1211 return (ctx->stats.sess_accept_good); 1212 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1213 return (ctx->stats.sess_accept_renegotiate); 1214 case SSL_CTRL_SESS_HIT: 1215 return (ctx->stats.sess_hit); 1216 case SSL_CTRL_SESS_CB_HIT: 1217 return (ctx->stats.sess_cb_hit); 1218 case SSL_CTRL_SESS_MISSES: 1219 return (ctx->stats.sess_miss); 1220 case SSL_CTRL_SESS_TIMEOUTS: 1221 return (ctx->stats.sess_timeout); 1222 case SSL_CTRL_SESS_CACHE_FULL: 1223 return (ctx->stats.sess_cache_full); 1224 case SSL_CTRL_OPTIONS: 1225 return (ctx->options|=larg); 1226 case SSL_CTRL_CLEAR_OPTIONS: 1227 return (ctx->options&=~larg); 1228 case SSL_CTRL_MODE: 1229 return (ctx->mode|=larg); 1230 case SSL_CTRL_CLEAR_MODE: 1231 return (ctx->mode&=~larg); 1232 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1233 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1234 return (0); 1235 ctx->max_send_fragment = larg; 1236 return (1); 1237 default: 1238 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1239 } 1240} 1241 1242long 1243SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1244{ 1245 switch (cmd) { 1246 case SSL_CTRL_SET_MSG_CALLBACK: 1247 ctx->msg_callback = (void (*)(int write_p, int version, 1248 int content_type, const void *buf, size_t len, SSL *ssl, 1249 void *arg))(fp); 1250 return (1); 1251 1252 default: 1253 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1254 } 1255} 1256 1257int 1258ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1259{ 1260 long l; 1261 1262 l = a->id - b->id; 1263 if (l == 0L) 1264 return (0); 1265 else 1266 return ((l > 0) ? 1:-1); 1267} 1268 1269int 1270ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1271 const SSL_CIPHER * const *bp) 1272{ 1273 long l; 1274 1275 l = (*ap)->id - (*bp)->id; 1276 if (l == 0L) 1277 return (0); 1278 else 1279 return ((l > 0) ? 1:-1); 1280} 1281 1282/* 1283 * Return a STACK of the ciphers available for the SSL and in order of 1284 * preference. 1285 */ 1286STACK_OF(SSL_CIPHER) * 1287SSL_get_ciphers(const SSL *s) 1288{ 1289 if (s != NULL) { 1290 if (s->cipher_list != NULL) { 1291 return (s->cipher_list); 1292 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1293 return (s->ctx->cipher_list); 1294 } 1295 } 1296 return (NULL); 1297} 1298 1299/* 1300 * Return a STACK of the ciphers available for the SSL and in order of 1301 * algorithm id. 1302 */ 1303STACK_OF(SSL_CIPHER) * 1304ssl_get_ciphers_by_id(SSL *s) 1305{ 1306 if (s != NULL) { 1307 if (s->cipher_list_by_id != NULL) { 1308 return (s->cipher_list_by_id); 1309 } else if ((s->ctx != NULL) && 1310 (s->ctx->cipher_list_by_id != NULL)) { 1311 return (s->ctx->cipher_list_by_id); 1312 } 1313 } 1314 return (NULL); 1315} 1316 1317/* The old interface to get the same thing as SSL_get_ciphers(). */ 1318const char * 1319SSL_get_cipher_list(const SSL *s, int n) 1320{ 1321 SSL_CIPHER *c; 1322 STACK_OF(SSL_CIPHER) *sk; 1323 1324 if (s == NULL) 1325 return (NULL); 1326 sk = SSL_get_ciphers(s); 1327 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1328 return (NULL); 1329 c = sk_SSL_CIPHER_value(sk, n); 1330 if (c == NULL) 1331 return (NULL); 1332 return (c->name); 1333} 1334 1335/* Specify the ciphers to be used by default by the SSL_CTX. */ 1336int 1337SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1338{ 1339 STACK_OF(SSL_CIPHER) *sk; 1340 1341 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1342 &ctx->cipher_list_by_id, str); 1343 /* 1344 * ssl_create_cipher_list may return an empty stack if it 1345 * was unable to find a cipher matching the given rule string 1346 * (for example if the rule string specifies a cipher which 1347 * has been disabled). This is not an error as far as 1348 * ssl_create_cipher_list is concerned, and hence 1349 * ctx->cipher_list and ctx->cipher_list_by_id has been 1350 * updated. 1351 */ 1352 if (sk == NULL) 1353 return (0); 1354 else if (sk_SSL_CIPHER_num(sk) == 0) { 1355 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1356 SSL_R_NO_CIPHER_MATCH); 1357 return (0); 1358 } 1359 return (1); 1360} 1361 1362/* Specify the ciphers to be used by the SSL. */ 1363int 1364SSL_set_cipher_list(SSL *s, const char *str) 1365{ 1366 STACK_OF(SSL_CIPHER) *sk; 1367 1368 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1369 &s->cipher_list_by_id, str); 1370 /* see comment in SSL_CTX_set_cipher_list */ 1371 if (sk == NULL) 1372 return (0); 1373 else if (sk_SSL_CIPHER_num(sk) == 0) { 1374 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1375 SSL_R_NO_CIPHER_MATCH); 1376 return (0); 1377 } 1378 return (1); 1379} 1380 1381/* works well for SSLv2, not so good for SSLv3 */ 1382char * 1383SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1384{ 1385 char *end; 1386 STACK_OF(SSL_CIPHER) *sk; 1387 SSL_CIPHER *c; 1388 size_t curlen = 0; 1389 int i; 1390 1391 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1392 (len < 2)) 1393 return (NULL); 1394 1395 sk = s->session->ciphers; 1396 buf[0] = '\0'; 1397 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1398 c = sk_SSL_CIPHER_value(sk, i); 1399 end = buf + curlen; 1400 if (strlcat(buf, c->name, len) >= len || 1401 (curlen = strlcat(buf, ":", len)) >= len) { 1402 /* remove truncated cipher from list */ 1403 *end = '\0'; 1404 break; 1405 } 1406 } 1407 /* remove trailing colon */ 1408 if ((end = strrchr(buf, ':')) != NULL) 1409 *end = '\0'; 1410 return (buf); 1411} 1412 1413int 1414ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1415 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1416{ 1417 int i, j = 0; 1418 SSL_CIPHER *c; 1419 unsigned char *q; 1420#ifndef OPENSSL_NO_KRB5 1421 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1422#endif /* OPENSSL_NO_KRB5 */ 1423 1424 if (sk == NULL) 1425 return (0); 1426 q = p; 1427 1428 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1429 c = sk_SSL_CIPHER_value(sk, i); 1430 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1431 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1432 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1433 continue; 1434#ifndef OPENSSL_NO_KRB5 1435 if (((c->algorithm_mkey & SSL_kKRB5) || 1436 (c->algorithm_auth & SSL_aKRB5)) && nokrb5) 1437 continue; 1438#endif /* OPENSSL_NO_KRB5 */ 1439#ifndef OPENSSL_NO_PSK 1440 /* with PSK there must be client callback set */ 1441 if (((c->algorithm_mkey & SSL_kPSK) || 1442 (c->algorithm_auth & SSL_aPSK)) && 1443 s->psk_client_callback == NULL) 1444 continue; 1445#endif /* OPENSSL_NO_PSK */ 1446 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1447 p += j; 1448 } 1449 /* 1450 * If p == q, no ciphers and caller indicates an error. Otherwise 1451 * add SCSV if not renegotiating. 1452 */ 1453 if (p != q && !s->renegotiate) { 1454 static SSL_CIPHER scsv = { 1455 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1456 }; 1457 j = put_cb ? put_cb(&scsv, p) : 1458 ssl_put_cipher_by_char(s, &scsv, p); 1459 p += j; 1460#ifdef OPENSSL_RI_DEBUG 1461 fprintf(stderr, "SCSV sent by client\n"); 1462#endif 1463 } 1464 1465 return (p - q); 1466} 1467 1468STACK_OF(SSL_CIPHER) * 1469ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1470 STACK_OF(SSL_CIPHER) **skp) 1471{ 1472 const SSL_CIPHER *c; 1473 STACK_OF(SSL_CIPHER) *sk; 1474 int i, n; 1475 1476 if (s->s3) 1477 s->s3->send_connection_binding = 0; 1478 1479 n = ssl_put_cipher_by_char(s, NULL, NULL); 1480 if ((num % n) != 0) { 1481 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1482 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1483 return (NULL); 1484 } 1485 if ((skp == NULL) || (*skp == NULL)) 1486 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1487 else { 1488 sk= *skp; 1489 sk_SSL_CIPHER_zero(sk); 1490 } 1491 1492 for (i = 0; i < num; i += n) { 1493 /* Check for SCSV */ 1494 if (s->s3 && (n != 3 || !p[0]) && 1495 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1496 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1497 /* SCSV fatal if renegotiating */ 1498 if (s->renegotiate) { 1499 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1500 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1501 ssl3_send_alert(s, SSL3_AL_FATAL, 1502 SSL_AD_HANDSHAKE_FAILURE); 1503 1504 goto err; 1505 } 1506 s->s3->send_connection_binding = 1; 1507 p += n; 1508#ifdef OPENSSL_RI_DEBUG 1509 fprintf(stderr, "SCSV received by server\n"); 1510#endif 1511 continue; 1512 } 1513 1514 c = ssl_get_cipher_by_char(s, p); 1515 p += n; 1516 if (c != NULL) { 1517 if (!sk_SSL_CIPHER_push(sk, c)) { 1518 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1519 ERR_R_MALLOC_FAILURE); 1520 goto err; 1521 } 1522 } 1523 } 1524 1525 if (skp != NULL) 1526 *skp = sk; 1527 return (sk); 1528 err: 1529 if ((skp == NULL) || (*skp == NULL)) 1530 sk_SSL_CIPHER_free(sk); 1531 return (NULL); 1532} 1533 1534 1535#ifndef OPENSSL_NO_TLSEXT 1536/* 1537 * Return a servername extension value if provided in Client Hello, or NULL. 1538 * So far, only host_name types are defined (RFC 3546). 1539 */ 1540const char * 1541SSL_get_servername(const SSL *s, const int type) 1542{ 1543 if (type != TLSEXT_NAMETYPE_host_name) 1544 return (NULL); 1545 1546 return (s->session && !s->tlsext_hostname ? 1547 s->session->tlsext_hostname : 1548 s->tlsext_hostname); 1549} 1550 1551int 1552SSL_get_servername_type(const SSL *s) 1553{ 1554 if (s->session && 1555 (!s->tlsext_hostname ? 1556 s->session->tlsext_hostname : s->tlsext_hostname)) 1557 return (TLSEXT_NAMETYPE_host_name); 1558 return (-1); 1559} 1560 1561# ifndef OPENSSL_NO_NEXTPROTONEG 1562/* 1563 * SSL_select_next_proto implements the standard protocol selection. It is 1564 * expected that this function is called from the callback set by 1565 * SSL_CTX_set_next_proto_select_cb. 1566 * 1567 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1568 * strings. The length byte itself is not included in the length. A byte 1569 * string of length 0 is invalid. No byte string may be truncated. 1570 * 1571 * The current, but experimental algorithm for selecting the protocol is: 1572 * 1573 * 1) If the server doesn't support NPN then this is indicated to the 1574 * callback. In this case, the client application has to abort the connection 1575 * or have a default application level protocol. 1576 * 1577 * 2) If the server supports NPN, but advertises an empty list then the 1578 * client selects the first protcol in its list, but indicates via the 1579 * API that this fallback case was enacted. 1580 * 1581 * 3) Otherwise, the client finds the first protocol in the server's list 1582 * that it supports and selects this protocol. This is because it's 1583 * assumed that the server has better information about which protocol 1584 * a client should use. 1585 * 1586 * 4) If the client doesn't support any of the server's advertised 1587 * protocols, then this is treated the same as case 2. 1588 * 1589 * It returns either 1590 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1591 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1592 */ 1593int 1594SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1595 const unsigned char *server, unsigned int server_len, 1596 const unsigned char *client, unsigned int client_len) 1597{ 1598 unsigned int i, j; 1599 const unsigned char *result; 1600 int status = OPENSSL_NPN_UNSUPPORTED; 1601 1602 /* 1603 * For each protocol in server preference order, 1604 * see if we support it. 1605 */ 1606 for (i = 0; i < server_len; ) { 1607 for (j = 0; j < client_len; ) { 1608 if (server[i] == client[j] && 1609 memcmp(&server[i + 1], 1610 &client[j + 1], server[i]) == 0) { 1611 /* We found a match */ 1612 result = &server[i]; 1613 status = OPENSSL_NPN_NEGOTIATED; 1614 goto found; 1615 } 1616 j += client[j]; 1617 j++; 1618 } 1619 i += server[i]; 1620 i++; 1621 } 1622 1623 /* There's no overlap between our protocols and the server's list. */ 1624 result = client; 1625 status = OPENSSL_NPN_NO_OVERLAP; 1626 1627 found: 1628 *out = (unsigned char *) result + 1; 1629 *outlen = result[0]; 1630 return (status); 1631} 1632 1633/* 1634 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1635 * requested protocol for this connection and returns 0. If the client didn't 1636 * request any protocol, then *data is set to NULL. 1637 * 1638 * Note that the client can request any protocol it chooses. The value returned 1639 * from this function need not be a member of the list of supported protocols 1640 * provided by the callback. 1641 */ 1642void 1643SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1644 unsigned *len) 1645{ 1646 *data = s->next_proto_negotiated; 1647 if (!*data) { 1648 *len = 0; 1649 } else { 1650 *len = s->next_proto_negotiated_len; 1651 } 1652} 1653 1654/* 1655 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1656 * TLS server needs a list of supported protocols for Next Protocol 1657 * Negotiation. The returned list must be in wire format. The list is returned 1658 * by setting |out| to point to it and |outlen| to its length. This memory will 1659 * not be modified, but one should assume that the SSL* keeps a reference to 1660 * it. 1661 * 1662 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1663 * Otherwise, no such extension will be included in the ServerHello. 1664 */ 1665void 1666SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1667 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1668{ 1669 ctx->next_protos_advertised_cb = cb; 1670 ctx->next_protos_advertised_cb_arg = arg; 1671} 1672 1673/* 1674 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1675 * client needs to select a protocol from the server's provided list. |out| 1676 * must be set to point to the selected protocol (which may be within |in|). 1677 * The length of the protocol name must be written into |outlen|. The server's 1678 * advertised protocols are provided in |in| and |inlen|. The callback can 1679 * assume that |in| is syntactically valid. 1680 * 1681 * The client must select a protocol. It is fatal to the connection if this 1682 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1683 */ 1684void 1685SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1686 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1687 unsigned int inlen, void *arg), void *arg) 1688{ 1689 ctx->next_proto_select_cb = cb; 1690 ctx->next_proto_select_cb_arg = arg; 1691} 1692# endif 1693#endif 1694 1695int 1696SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1697 const char *label, size_t llen, const unsigned char *p, size_t plen, 1698 int use_context) 1699{ 1700 if (s->version < TLS1_VERSION) 1701 return (-1); 1702 1703 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1704 label, llen, p, plen, use_context)); 1705} 1706 1707static unsigned long 1708ssl_session_hash(const SSL_SESSION *a) 1709{ 1710 unsigned long l; 1711 1712 l = (unsigned long) 1713 ((unsigned int) a->session_id[0] )| 1714 ((unsigned int) a->session_id[1]<< 8L)| 1715 ((unsigned long)a->session_id[2]<<16L)| 1716 ((unsigned long)a->session_id[3]<<24L); 1717 return (l); 1718} 1719 1720/* 1721 * NB: If this function (or indeed the hash function which uses a sort of 1722 * coarser function than this one) is changed, ensure 1723 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1724 * able to construct an SSL_SESSION that will collide with any existing session 1725 * with a matching session ID. 1726 */ 1727static int 1728ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1729{ 1730 if (a->ssl_version != b->ssl_version) 1731 return (1); 1732 if (a->session_id_length != b->session_id_length) 1733 return (1); 1734 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1735} 1736 1737/* 1738 * These wrapper functions should remain rather than redeclaring 1739 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1740 * variable. The reason is that the functions aren't static, they're exposed via 1741 * ssl.h. 1742 */ 1743static 1744IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1745static 1746IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1747 1748SSL_CTX * 1749SSL_CTX_new(const SSL_METHOD *meth) 1750{ 1751 SSL_CTX *ret = NULL; 1752 1753 if (meth == NULL) { 1754 SSLerr(SSL_F_SSL_CTX_NEW, 1755 SSL_R_NULL_SSL_METHOD_PASSED); 1756 return (NULL); 1757 } 1758 1759 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1760 SSLerr(SSL_F_SSL_CTX_NEW, 1761 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1762 goto err; 1763 } 1764 ret = calloc(1, sizeof(SSL_CTX)); 1765 if (ret == NULL) 1766 goto err; 1767 1768 ret->method = meth; 1769 1770 ret->cert_store = NULL; 1771 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1772 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1773 ret->session_cache_head = NULL; 1774 ret->session_cache_tail = NULL; 1775 1776 /* We take the system default */ 1777 ret->session_timeout = meth->get_timeout(); 1778 1779 ret->new_session_cb = 0; 1780 ret->remove_session_cb = 0; 1781 ret->get_session_cb = 0; 1782 ret->generate_session_id = 0; 1783 1784 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1785 1786 ret->references = 1; 1787 ret->quiet_shutdown = 0; 1788 1789/* ret->cipher=NULL; 1790 ret->master_key=NULL; 1791*/ 1792 1793 ret->info_callback = NULL; 1794 1795 ret->app_verify_callback = 0; 1796 ret->app_verify_arg = NULL; 1797 1798 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1799 ret->read_ahead = 0; 1800 ret->msg_callback = 0; 1801 ret->msg_callback_arg = NULL; 1802 ret->verify_mode = SSL_VERIFY_NONE; 1803#if 0 1804 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1805#endif 1806 ret->sid_ctx_length = 0; 1807 ret->default_verify_callback = NULL; 1808 if ((ret->cert = ssl_cert_new()) == NULL) 1809 goto err; 1810 1811 ret->default_passwd_callback = 0; 1812 ret->default_passwd_callback_userdata = NULL; 1813 ret->client_cert_cb = 0; 1814 ret->app_gen_cookie_cb = 0; 1815 ret->app_verify_cookie_cb = 0; 1816 1817 ret->sessions = lh_SSL_SESSION_new(); 1818 if (ret->sessions == NULL) 1819 goto err; 1820 ret->cert_store = X509_STORE_new(); 1821 if (ret->cert_store == NULL) 1822 goto err; 1823 1824 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1825 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1826 if (ret->cipher_list == NULL || 1827 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1828 SSLerr(SSL_F_SSL_CTX_NEW, 1829 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1830 goto err2; 1831 } 1832 1833 ret->param = X509_VERIFY_PARAM_new(); 1834 if (!ret->param) 1835 goto err; 1836 1837 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1838 SSLerr(SSL_F_SSL_CTX_NEW, 1839 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1840 goto err2; 1841 } 1842 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1843 SSLerr(SSL_F_SSL_CTX_NEW, 1844 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1845 goto err2; 1846 } 1847 1848 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1849 goto err; 1850 1851 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1852 1853 ret->extra_certs = NULL; 1854 /* No compression for DTLS */ 1855 if (meth->version != DTLS1_VERSION) 1856 ret->comp_methods = SSL_COMP_get_compression_methods(); 1857 1858 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1859 1860#ifndef OPENSSL_NO_TLSEXT 1861 ret->tlsext_servername_callback = 0; 1862 ret->tlsext_servername_arg = NULL; 1863 /* Setup RFC4507 ticket keys */ 1864 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1865 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1866 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1867 ret->options |= SSL_OP_NO_TICKET; 1868 1869 ret->tlsext_status_cb = 0; 1870 ret->tlsext_status_arg = NULL; 1871 1872# ifndef OPENSSL_NO_NEXTPROTONEG 1873 ret->next_protos_advertised_cb = 0; 1874 ret->next_proto_select_cb = 0; 1875# endif 1876#endif 1877#ifndef OPENSSL_NO_PSK 1878 ret->psk_identity_hint = NULL; 1879 ret->psk_client_callback = NULL; 1880 ret->psk_server_callback = NULL; 1881#endif 1882#ifndef OPENSSL_NO_SRP 1883 SSL_CTX_SRP_CTX_init(ret); 1884#endif 1885#ifndef OPENSSL_NO_ENGINE 1886 ret->client_cert_engine = NULL; 1887#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1888#define eng_strx(x) #x 1889#define eng_str(x) eng_strx(x) 1890 /* Use specific client engine automatically... ignore errors */ 1891 { 1892 ENGINE *eng; 1893 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1894 if (!eng) { 1895 ERR_clear_error(); 1896 ENGINE_load_builtin_engines(); 1897 eng = ENGINE_by_id(eng_str( 1898 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1899 } 1900 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1901 ERR_clear_error(); 1902 } 1903#endif 1904#endif 1905 /* 1906 * Default is to connect to non-RI servers. When RI is more widely 1907 * deployed might change this. 1908 */ 1909 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1910 1911 return (ret); 1912 err: 1913 SSLerr(SSL_F_SSL_CTX_NEW, 1914 ERR_R_MALLOC_FAILURE); 1915 err2: 1916 if (ret != NULL) 1917 SSL_CTX_free(ret); 1918 return (NULL); 1919} 1920 1921#if 0 1922static void 1923SSL_COMP_free(SSL_COMP *comp) 1924 { free(comp); 1925} 1926#endif 1927 1928void 1929SSL_CTX_free(SSL_CTX *a) 1930{ 1931 int i; 1932 1933 if (a == NULL) 1934 return; 1935 1936 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1937 if (i > 0) 1938 return; 1939 1940 if (a->param) 1941 X509_VERIFY_PARAM_free(a->param); 1942 1943 /* 1944 * Free internal session cache. However: the remove_cb() may reference 1945 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1946 * after the sessions were flushed. 1947 * As the ex_data handling routines might also touch the session cache, 1948 * the most secure solution seems to be: empty (flush) the cache, then 1949 * free ex_data, then finally free the cache. 1950 * (See ticket [openssl.org #212].) 1951 */ 1952 if (a->sessions != NULL) 1953 SSL_CTX_flush_sessions(a, 0); 1954 1955 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1956 1957 if (a->sessions != NULL) 1958 lh_SSL_SESSION_free(a->sessions); 1959 1960 if (a->cert_store != NULL) 1961 X509_STORE_free(a->cert_store); 1962 if (a->cipher_list != NULL) 1963 sk_SSL_CIPHER_free(a->cipher_list); 1964 if (a->cipher_list_by_id != NULL) 1965 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1966 if (a->cert != NULL) 1967 ssl_cert_free(a->cert); 1968 if (a->client_CA != NULL) 1969 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1970 if (a->extra_certs != NULL) 1971 sk_X509_pop_free(a->extra_certs, X509_free); 1972#if 0 /* This should never be done, since it removes a global database */ 1973 if (a->comp_methods != NULL) 1974 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1975#else 1976 a->comp_methods = NULL; 1977#endif 1978 1979#ifndef OPENSSL_NO_SRTP 1980 if (a->srtp_profiles) 1981 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1982#endif 1983 1984#ifndef OPENSSL_NO_PSK 1985 if (a->psk_identity_hint) 1986 free(a->psk_identity_hint); 1987#endif 1988#ifndef OPENSSL_NO_SRP 1989 SSL_CTX_SRP_CTX_free(a); 1990#endif 1991#ifndef OPENSSL_NO_ENGINE 1992 if (a->client_cert_engine) 1993 ENGINE_finish(a->client_cert_engine); 1994#endif 1995 1996 free(a); 1997} 1998 1999void 2000SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2001{ 2002 ctx->default_passwd_callback = cb; 2003} 2004 2005void 2006SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2007{ 2008 ctx->default_passwd_callback_userdata = u; 2009} 2010 2011void 2012SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2013 void *), void *arg) 2014{ 2015 ctx->app_verify_callback = cb; 2016 ctx->app_verify_arg = arg; 2017} 2018 2019void 2020SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2021{ 2022 ctx->verify_mode = mode; 2023 ctx->default_verify_callback = cb; 2024} 2025 2026void 2027SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2028{ 2029 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2030} 2031 2032void 2033ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2034{ 2035 CERT_PKEY *cpk; 2036 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2037 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2038 int rsa_tmp_export, dh_tmp_export, kl; 2039 unsigned long mask_k, mask_a, emask_k, emask_a; 2040 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2041#ifndef OPENSSL_NO_ECDH 2042 int have_ecdh_tmp; 2043#endif 2044 X509 *x = NULL; 2045 EVP_PKEY *ecc_pkey = NULL; 2046 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2047 2048 if (c == NULL) 2049 return; 2050 2051 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2052 2053 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2054 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2055 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2056#ifndef OPENSSL_NO_DH 2057 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2058 dh_tmp_export = (c->dh_tmp_cb != NULL || 2059 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2060#else 2061 dh_tmp = dh_tmp_export = 0; 2062#endif 2063 2064#ifndef OPENSSL_NO_ECDH 2065 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2066#endif 2067 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2068 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2069 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2070 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2071 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2072 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2073 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2074 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2075 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2076 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2077 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2078/* FIX THIS EAY EAY EAY */ 2079 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2080 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2081 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2082 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2083 mask_k = 0; 2084 mask_a = 0; 2085 emask_k = 0; 2086 emask_a = 0; 2087 2088 2089 2090#ifdef CIPHER_DEBUG 2091 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d " 2092 "rs=%d ds=%d dhr=%d dhd=%d\n", 2093 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, 2094 rsa_enc, rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2095#endif 2096 2097 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2098 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2099 mask_k |= SSL_kGOST; 2100 mask_a |= SSL_aGOST01; 2101 } 2102 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2103 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2104 mask_k |= SSL_kGOST; 2105 mask_a |= SSL_aGOST94; 2106 } 2107 2108 if (rsa_enc || (rsa_tmp && rsa_sign)) 2109 mask_k|=SSL_kRSA; 2110 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2111 emask_k|=SSL_kRSA; 2112 2113#if 0 2114 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2115 if ((dh_tmp || dh_rsa || dh_dsa) && 2116 (rsa_enc || rsa_sign || dsa_sign)) 2117 mask_k|=SSL_kEDH; 2118 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2119 (rsa_enc || rsa_sign || dsa_sign)) 2120 emask_k|=SSL_kEDH; 2121#endif 2122 2123 if (dh_tmp_export) 2124 emask_k|=SSL_kEDH; 2125 2126 if (dh_tmp) 2127 mask_k|=SSL_kEDH; 2128 2129 if (dh_rsa) 2130 mask_k|=SSL_kDHr; 2131 if (dh_rsa_export) 2132 emask_k|=SSL_kDHr; 2133 2134 if (dh_dsa) 2135 mask_k|=SSL_kDHd; 2136 if (dh_dsa_export) 2137 emask_k|=SSL_kDHd; 2138 2139 if (rsa_enc || rsa_sign) { 2140 mask_a|=SSL_aRSA; 2141 emask_a|=SSL_aRSA; 2142 } 2143 2144 if (dsa_sign) { 2145 mask_a|=SSL_aDSS; 2146 emask_a|=SSL_aDSS; 2147 } 2148 2149 mask_a|=SSL_aNULL; 2150 emask_a|=SSL_aNULL; 2151 2152#ifndef OPENSSL_NO_KRB5 2153 mask_k|=SSL_kKRB5; 2154 mask_a|=SSL_aKRB5; 2155 emask_k|=SSL_kKRB5; 2156 emask_a|=SSL_aKRB5; 2157#endif 2158 2159 /* 2160 * An ECC certificate may be usable for ECDH and/or 2161 * ECDSA cipher suites depending on the key usage extension. 2162 */ 2163 if (have_ecc_cert) { 2164 /* This call populates extension flags (ex_flags) */ 2165 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2166 X509_check_purpose(x, -1, 0); 2167 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2168 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2169 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2170 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2171 ecc_pkey = X509_get_pubkey(x); 2172 ecc_pkey_size = (ecc_pkey != NULL) ? 2173 EVP_PKEY_bits(ecc_pkey) : 0; 2174 EVP_PKEY_free(ecc_pkey); 2175 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2176 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2177 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2178 } 2179#ifndef OPENSSL_NO_ECDH 2180 if (ecdh_ok) { 2181 2182 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2183 mask_k|=SSL_kECDHr; 2184 mask_a|=SSL_aECDH; 2185 if (ecc_pkey_size <= 163) { 2186 emask_k|=SSL_kECDHr; 2187 emask_a|=SSL_aECDH; 2188 } 2189 } 2190 2191 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2192 mask_k|=SSL_kECDHe; 2193 mask_a|=SSL_aECDH; 2194 if (ecc_pkey_size <= 163) { 2195 emask_k|=SSL_kECDHe; 2196 emask_a|=SSL_aECDH; 2197 } 2198 } 2199 } 2200#endif 2201#ifndef OPENSSL_NO_ECDSA 2202 if (ecdsa_ok) { 2203 mask_a|=SSL_aECDSA; 2204 emask_a|=SSL_aECDSA; 2205 } 2206#endif 2207 } 2208 2209#ifndef OPENSSL_NO_ECDH 2210 if (have_ecdh_tmp) { 2211 mask_k|=SSL_kEECDH; 2212 emask_k|=SSL_kEECDH; 2213 } 2214#endif 2215 2216#ifndef OPENSSL_NO_PSK 2217 mask_k |= SSL_kPSK; 2218 mask_a |= SSL_aPSK; 2219 emask_k |= SSL_kPSK; 2220 emask_a |= SSL_aPSK; 2221#endif 2222 2223 c->mask_k = mask_k; 2224 c->mask_a = mask_a; 2225 c->export_mask_k = emask_k; 2226 c->export_mask_a = emask_a; 2227 c->valid = 1; 2228} 2229 2230/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2231#define ku_reject(x, usage) \ 2232 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2233 2234#ifndef OPENSSL_NO_EC 2235 2236int 2237ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2238{ 2239 unsigned long alg_k, alg_a; 2240 EVP_PKEY *pkey = NULL; 2241 int keysize = 0; 2242 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2243 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2244 2245 alg_k = cs->algorithm_mkey; 2246 alg_a = cs->algorithm_auth; 2247 2248 if (SSL_C_IS_EXPORT(cs)) { 2249 /* ECDH key length in export ciphers must be <= 163 bits */ 2250 pkey = X509_get_pubkey(x); 2251 if (pkey == NULL) 2252 return (0); 2253 keysize = EVP_PKEY_bits(pkey); 2254 EVP_PKEY_free(pkey); 2255 if (keysize > 163) 2256 return (0); 2257 } 2258 2259 /* This call populates the ex_flags field correctly */ 2260 X509_check_purpose(x, -1, 0); 2261 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2262 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2263 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2264 } 2265 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2266 /* key usage, if present, must allow key agreement */ 2267 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2268 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2269 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2270 return (0); 2271 } 2272 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2273 TLS1_2_VERSION) { 2274 /* signature alg must be ECDSA */ 2275 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2276 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2277 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2278 return (0); 2279 } 2280 } 2281 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2282 TLS1_2_VERSION) { 2283 /* signature alg must be RSA */ 2284 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2285 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2286 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2287 return (0); 2288 } 2289 } 2290 } 2291 if (alg_a & SSL_aECDSA) { 2292 /* key usage, if present, must allow signing */ 2293 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2294 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2295 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2296 return (0); 2297 } 2298 } 2299 2300 return (1); 2301 /* all checks are ok */ 2302} 2303 2304#endif 2305 2306/* THIS NEEDS CLEANING UP */ 2307CERT_PKEY * 2308ssl_get_server_send_pkey(const SSL *s) 2309{ 2310 unsigned long alg_k, alg_a; 2311 CERT *c; 2312 int i; 2313 2314 c = s->cert; 2315 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2316 2317 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2318 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2319 2320 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2321 /* 2322 * We don't need to look at SSL_kEECDH 2323 * since no certificate is needed for 2324 * anon ECDH and for authenticated 2325 * EECDH, the check for the auth 2326 * algorithm will set i correctly 2327 * NOTE: For ECDH-RSA, we need an ECC 2328 * not an RSA cert but for EECDH-RSA 2329 * we need an RSA cert. Placing the 2330 * checks for SSL_kECDH before RSA 2331 * checks ensures the correct cert is chosen. 2332 */ 2333 i = SSL_PKEY_ECC; 2334 } else if (alg_a & SSL_aECDSA) { 2335 i = SSL_PKEY_ECC; 2336 } else if (alg_k & SSL_kDHr) 2337 i = SSL_PKEY_DH_RSA; 2338 else if (alg_k & SSL_kDHd) 2339 i = SSL_PKEY_DH_DSA; 2340 else if (alg_a & SSL_aDSS) 2341 i = SSL_PKEY_DSA_SIGN; 2342 else if (alg_a & SSL_aRSA) { 2343 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2344 i = SSL_PKEY_RSA_SIGN; 2345 else 2346 i = SSL_PKEY_RSA_ENC; 2347 } else if (alg_a & SSL_aKRB5) { 2348 /* VRS something else here? */ 2349 return (NULL); 2350 } else if (alg_a & SSL_aGOST94) 2351 i = SSL_PKEY_GOST94; 2352 else if (alg_a & SSL_aGOST01) 2353 i = SSL_PKEY_GOST01; 2354 else { /* if (alg_a & SSL_aNULL) */ 2355 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, 2356 ERR_R_INTERNAL_ERROR); 2357 return (NULL); 2358 } 2359 2360 return (c->pkeys + i); 2361} 2362 2363X509 * 2364ssl_get_server_send_cert(const SSL *s) 2365{ 2366 CERT_PKEY *cpk; 2367 2368 cpk = ssl_get_server_send_pkey(s); 2369 if (!cpk) 2370 return (NULL); 2371 return (cpk->x509); 2372} 2373 2374EVP_PKEY * 2375ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2376{ 2377 unsigned long alg_a; 2378 CERT *c; 2379 int idx = -1; 2380 2381 alg_a = cipher->algorithm_auth; 2382 c = s->cert; 2383 2384 if ((alg_a & SSL_aDSS) && 2385 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2386 idx = SSL_PKEY_DSA_SIGN; 2387 else if (alg_a & SSL_aRSA) { 2388 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2389 idx = SSL_PKEY_RSA_SIGN; 2390 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2391 idx = SSL_PKEY_RSA_ENC; 2392 } else if ((alg_a & SSL_aECDSA) && 2393 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2394 idx = SSL_PKEY_ECC; 2395 if (idx == -1) { 2396 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, 2397 ERR_R_INTERNAL_ERROR); 2398 return (NULL); 2399 } 2400 if (pmd) 2401 *pmd = c->pkeys[idx].digest; 2402 return (c->pkeys[idx].privatekey); 2403} 2404 2405void 2406ssl_update_cache(SSL *s, int mode) 2407{ 2408 int i; 2409 2410 /* 2411 * If the session_id_length is 0, we are not supposed to cache it, 2412 * and it would be rather hard to do anyway :-) 2413 */ 2414 if (s->session->session_id_length == 0) 2415 return; 2416 2417 i = s->session_ctx->session_cache_mode; 2418 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2419 || SSL_CTX_add_session(s->session_ctx, s->session)) 2420 && (s->session_ctx->new_session_cb != NULL)) { 2421 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2422 if (!s->session_ctx->new_session_cb(s, s->session)) 2423 SSL_SESSION_free(s->session); 2424 } 2425 2426 /* auto flush every 255 connections */ 2427 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2428 ((i & mode) == mode)) { 2429 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2430 s->session_ctx->stats.sess_connect_good : 2431 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2432 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2433 } 2434 } 2435} 2436 2437const SSL_METHOD * 2438SSL_get_ssl_method(SSL *s) 2439{ 2440 return (s->method); 2441} 2442 2443int 2444SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2445{ 2446 int conn = -1; 2447 int ret = 1; 2448 2449 if (s->method != meth) { 2450 if (s->handshake_func != NULL) 2451 conn = (s->handshake_func == s->method->ssl_connect); 2452 2453 if (s->method->version == meth->version) 2454 s->method = meth; 2455 else { 2456 s->method->ssl_free(s); 2457 s->method = meth; 2458 ret = s->method->ssl_new(s); 2459 } 2460 2461 if (conn == 1) 2462 s->handshake_func = meth->ssl_connect; 2463 else if (conn == 0) 2464 s->handshake_func = meth->ssl_accept; 2465 } 2466 return (ret); 2467} 2468 2469int 2470SSL_get_error(const SSL *s, int i) 2471{ 2472 int reason; 2473 unsigned long l; 2474 BIO *bio; 2475 2476 if (i > 0) 2477 return (SSL_ERROR_NONE); 2478 2479 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2480 * etc, where we do encode the error */ 2481 if ((l = ERR_peek_error()) != 0) { 2482 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2483 return (SSL_ERROR_SYSCALL); 2484 else 2485 return (SSL_ERROR_SSL); 2486 } 2487 2488 if ((i < 0) && SSL_want_read(s)) { 2489 bio = SSL_get_rbio(s); 2490 if (BIO_should_read(bio)) 2491 return (SSL_ERROR_WANT_READ); 2492 else if (BIO_should_write(bio)) 2493 /* 2494 * This one doesn't make too much sense... We never 2495 * try to write to the rbio, and an application 2496 * program where rbio and wbio are separate couldn't 2497 * even know what it should wait for. However if we 2498 * ever set s->rwstate incorrectly (so that we have 2499 * SSL_want_read(s) instead of SSL_want_write(s)) 2500 * and rbio and wbio *are* the same, this test works 2501 * around that bug; so it might be safer to keep it. 2502 */ 2503 return (SSL_ERROR_WANT_WRITE); 2504 else if (BIO_should_io_special(bio)) { 2505 reason = BIO_get_retry_reason(bio); 2506 if (reason == BIO_RR_CONNECT) 2507 return (SSL_ERROR_WANT_CONNECT); 2508 else if (reason == BIO_RR_ACCEPT) 2509 return (SSL_ERROR_WANT_ACCEPT); 2510 else 2511 return (SSL_ERROR_SYSCALL); /* unknown */ 2512 } 2513 } 2514 2515 if ((i < 0) && SSL_want_write(s)) { 2516 bio = SSL_get_wbio(s); 2517 if (BIO_should_write(bio)) 2518 return (SSL_ERROR_WANT_WRITE); 2519 else if (BIO_should_read(bio)) { 2520 /* 2521 * See above (SSL_want_read(s) with 2522 * BIO_should_write(bio)) 2523 */ 2524 return (SSL_ERROR_WANT_READ); 2525 } else if (BIO_should_io_special(bio)) { 2526 reason = BIO_get_retry_reason(bio); 2527 if (reason == BIO_RR_CONNECT) 2528 return (SSL_ERROR_WANT_CONNECT); 2529 else if (reason == BIO_RR_ACCEPT) 2530 return (SSL_ERROR_WANT_ACCEPT); 2531 else 2532 return (SSL_ERROR_SYSCALL); 2533 } 2534 } 2535 if ((i < 0) && SSL_want_x509_lookup(s)) { 2536 return (SSL_ERROR_WANT_X509_LOOKUP); 2537 } 2538 2539 if (i == 0) { 2540 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2541 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2542 return (SSL_ERROR_ZERO_RETURN); 2543 } 2544 return (SSL_ERROR_SYSCALL); 2545} 2546 2547int 2548SSL_do_handshake(SSL *s) 2549{ 2550 int ret = 1; 2551 2552 if (s->handshake_func == NULL) { 2553 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2554 SSL_R_CONNECTION_TYPE_NOT_SET); 2555 return (-1); 2556 } 2557 2558 s->method->ssl_renegotiate_check(s); 2559 2560 if (SSL_in_init(s) || SSL_in_before(s)) { 2561 ret = s->handshake_func(s); 2562 } 2563 return (ret); 2564} 2565 2566/* 2567 * For the next 2 functions, SSL_clear() sets shutdown and so 2568 * one of these calls will reset it 2569 */ 2570void 2571SSL_set_accept_state(SSL *s) 2572{ 2573 s->server = 1; 2574 s->shutdown = 0; 2575 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2576 s->handshake_func = s->method->ssl_accept; 2577 /* clear the current cipher */ 2578 ssl_clear_cipher_ctx(s); 2579 ssl_clear_hash_ctx(&s->read_hash); 2580 ssl_clear_hash_ctx(&s->write_hash); 2581} 2582 2583void 2584SSL_set_connect_state(SSL *s) 2585{ 2586 s->server = 0; 2587 s->shutdown = 0; 2588 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2589 s->handshake_func = s->method->ssl_connect; 2590 /* clear the current cipher */ 2591 ssl_clear_cipher_ctx(s); 2592 ssl_clear_hash_ctx(&s->read_hash); 2593 ssl_clear_hash_ctx(&s->write_hash); 2594} 2595 2596int 2597ssl_undefined_function(SSL *s) 2598{ 2599 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2600 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2601 return (0); 2602} 2603 2604int 2605ssl_undefined_void_function(void) 2606{ 2607 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2608 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2609 return (0); 2610} 2611 2612int 2613ssl_undefined_const_function(const SSL *s) 2614{ 2615 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2616 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2617 return (0); 2618} 2619 2620SSL_METHOD * 2621ssl_bad_method(int ver) 2622{ 2623 SSLerr(SSL_F_SSL_BAD_METHOD, 2624 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2625 return (NULL); 2626} 2627 2628const char * 2629SSL_get_version(const SSL *s) 2630{ 2631 if (s->version == TLS1_2_VERSION) 2632 return ("TLSv1.2"); 2633 else if (s->version == TLS1_1_VERSION) 2634 return ("TLSv1.1"); 2635 else if (s->version == TLS1_VERSION) 2636 return ("TLSv1"); 2637 else if (s->version == SSL3_VERSION) 2638 return ("SSLv3"); 2639 else 2640 return ("unknown"); 2641} 2642 2643SSL * 2644SSL_dup(SSL *s) 2645{ 2646 STACK_OF(X509_NAME) *sk; 2647 X509_NAME *xn; 2648 SSL *ret; 2649 int i; 2650 2651 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2652 return (NULL); 2653 2654 ret->version = s->version; 2655 ret->type = s->type; 2656 ret->method = s->method; 2657 2658 if (s->session != NULL) { 2659 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2660 SSL_copy_session_id(ret, s); 2661 } else { 2662 /* 2663 * No session has been established yet, so we have to expect 2664 * that s->cert or ret->cert will be changed later -- 2665 * they should not both point to the same object, 2666 * and thus we can't use SSL_copy_session_id. 2667 */ 2668 2669 ret->method->ssl_free(ret); 2670 ret->method = s->method; 2671 ret->method->ssl_new(ret); 2672 2673 if (s->cert != NULL) { 2674 if (ret->cert != NULL) { 2675 ssl_cert_free(ret->cert); 2676 } 2677 ret->cert = ssl_cert_dup(s->cert); 2678 if (ret->cert == NULL) 2679 goto err; 2680 } 2681 2682 SSL_set_session_id_context(ret, 2683 s->sid_ctx, s->sid_ctx_length); 2684 } 2685 2686 ret->options = s->options; 2687 ret->mode = s->mode; 2688 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2689 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2690 ret->msg_callback = s->msg_callback; 2691 ret->msg_callback_arg = s->msg_callback_arg; 2692 SSL_set_verify(ret, SSL_get_verify_mode(s), 2693 SSL_get_verify_callback(s)); 2694 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2695 ret->generate_session_id = s->generate_session_id; 2696 2697 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2698 2699 ret->debug = s->debug; 2700 2701 /* copy app data, a little dangerous perhaps */ 2702 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2703 &ret->ex_data, &s->ex_data)) 2704 goto err; 2705 2706 /* setup rbio, and wbio */ 2707 if (s->rbio != NULL) { 2708 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2709 goto err; 2710 } 2711 if (s->wbio != NULL) { 2712 if (s->wbio != s->rbio) { 2713 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2714 goto err; 2715 } else 2716 ret->wbio = ret->rbio; 2717 } 2718 ret->rwstate = s->rwstate; 2719 ret->in_handshake = s->in_handshake; 2720 ret->handshake_func = s->handshake_func; 2721 ret->server = s->server; 2722 ret->renegotiate = s->renegotiate; 2723 ret->new_session = s->new_session; 2724 ret->quiet_shutdown = s->quiet_shutdown; 2725 ret->shutdown = s->shutdown; 2726 /* SSL_dup does not really work at any state, though */ 2727 ret->state=s->state; 2728 ret->rstate = s->rstate; 2729 2730 /* 2731 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2732 * ret->init_off 2733 */ 2734 ret->init_num = 0; 2735 2736 ret->hit = s->hit; 2737 2738 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2739 2740 /* dup the cipher_list and cipher_list_by_id stacks */ 2741 if (s->cipher_list != NULL) { 2742 if ((ret->cipher_list = 2743 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2744 goto err; 2745 } 2746 if (s->cipher_list_by_id != NULL) { 2747 if ((ret->cipher_list_by_id = 2748 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2749 goto err; 2750 } 2751 2752 /* Dup the client_CA list */ 2753 if (s->client_CA != NULL) { 2754 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2755 ret->client_CA = sk; 2756 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2757 xn = sk_X509_NAME_value(sk, i); 2758 if (sk_X509_NAME_set(sk, i, 2759 X509_NAME_dup(xn)) == NULL) { 2760 X509_NAME_free(xn); 2761 goto err; 2762 } 2763 } 2764 } 2765 2766 if (0) { 2767 err: 2768 if (ret != NULL) 2769 SSL_free(ret); 2770 ret = NULL; 2771 } 2772 return (ret); 2773} 2774 2775void 2776ssl_clear_cipher_ctx(SSL *s) 2777{ 2778 if (s->enc_read_ctx != NULL) { 2779 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2780 free(s->enc_read_ctx); 2781 s->enc_read_ctx = NULL; 2782 } 2783 if (s->enc_write_ctx != NULL) { 2784 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2785 free(s->enc_write_ctx); 2786 s->enc_write_ctx = NULL; 2787 } 2788#ifndef OPENSSL_NO_COMP 2789 if (s->expand != NULL) { 2790 COMP_CTX_free(s->expand); 2791 s->expand = NULL; 2792 } 2793 if (s->compress != NULL) { 2794 COMP_CTX_free(s->compress); 2795 s->compress = NULL; 2796 } 2797#endif 2798} 2799 2800/* Fix this function so that it takes an optional type parameter */ 2801X509 * 2802SSL_get_certificate(const SSL *s) 2803{ 2804 if (s->cert != NULL) 2805 return (s->cert->key->x509); 2806 else 2807 return (NULL); 2808} 2809 2810/* Fix this function so that it takes an optional type parameter */ 2811EVP_PKEY * 2812SSL_get_privatekey(SSL *s) 2813{ 2814 if (s->cert != NULL) 2815 return (s->cert->key->privatekey); 2816 else 2817 return (NULL); 2818} 2819 2820const SSL_CIPHER * 2821SSL_get_current_cipher(const SSL *s) 2822{ 2823 if ((s->session != NULL) && (s->session->cipher != NULL)) 2824 return (s->session->cipher); 2825 return (NULL); 2826} 2827#ifdef OPENSSL_NO_COMP 2828const void * 2829SSL_get_current_compression(SSL *s) 2830{ 2831 return (NULL); 2832} 2833 2834const void * 2835SSL_get_current_expansion(SSL *s) 2836{ 2837 return (NULL); 2838} 2839#else 2840 2841const COMP_METHOD * 2842SSL_get_current_compression(SSL *s) 2843{ 2844 if (s->compress != NULL) 2845 return (s->compress->meth); 2846 return (NULL); 2847} 2848 2849const COMP_METHOD * 2850SSL_get_current_expansion(SSL *s) 2851{ 2852 if (s->expand != NULL) 2853 return (s->expand->meth); 2854 return (NULL); 2855} 2856#endif 2857 2858int 2859ssl_init_wbio_buffer(SSL *s, int push) 2860{ 2861 BIO *bbio; 2862 2863 if (s->bbio == NULL) { 2864 bbio = BIO_new(BIO_f_buffer()); 2865 if (bbio == NULL) 2866 return (0); 2867 s->bbio = bbio; 2868 } else { 2869 bbio = s->bbio; 2870 if (s->bbio == s->wbio) 2871 s->wbio = BIO_pop(s->wbio); 2872 } 2873 (void)BIO_reset(bbio); 2874/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2875 if (!BIO_set_read_buffer_size(bbio, 1)) { 2876 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2877 ERR_R_BUF_LIB); 2878 return (0); 2879 } 2880 if (push) { 2881 if (s->wbio != bbio) 2882 s->wbio = BIO_push(bbio, s->wbio); 2883 } else { 2884 if (s->wbio == bbio) 2885 s->wbio = BIO_pop(bbio); 2886 } 2887 return (1); 2888} 2889 2890void 2891ssl_free_wbio_buffer(SSL *s) 2892{ 2893 if (s->bbio == NULL) 2894 return; 2895 2896 if (s->bbio == s->wbio) { 2897 /* remove buffering */ 2898 s->wbio = BIO_pop(s->wbio); 2899 } 2900 BIO_free(s->bbio); 2901 s->bbio = NULL; 2902} 2903 2904void 2905SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2906{ 2907 ctx->quiet_shutdown = mode; 2908} 2909 2910int 2911SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2912{ 2913 return (ctx->quiet_shutdown); 2914} 2915 2916void 2917SSL_set_quiet_shutdown(SSL *s, int mode) 2918{ 2919 s->quiet_shutdown = mode; 2920} 2921 2922int 2923SSL_get_quiet_shutdown(const SSL *s) 2924{ 2925 return (s->quiet_shutdown); 2926} 2927 2928void 2929SSL_set_shutdown(SSL *s, int mode) 2930{ 2931 s->shutdown = mode; 2932} 2933 2934int 2935SSL_get_shutdown(const SSL *s) 2936{ 2937 return (s->shutdown); 2938} 2939 2940int 2941SSL_version(const SSL *s) 2942{ 2943 return (s->version); 2944} 2945 2946SSL_CTX * 2947SSL_get_SSL_CTX(const SSL *ssl) 2948{ 2949 return (ssl->ctx); 2950} 2951 2952SSL_CTX * 2953SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2954{ 2955 if (ssl->ctx == ctx) 2956 return (ssl->ctx); 2957#ifndef OPENSSL_NO_TLSEXT 2958 if (ctx == NULL) 2959 ctx = ssl->initial_ctx; 2960#endif 2961 if (ssl->cert != NULL) 2962 ssl_cert_free(ssl->cert); 2963 ssl->cert = ssl_cert_dup(ctx->cert); 2964 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2965 if (ssl->ctx != NULL) 2966 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2967 ssl->ctx = ctx; 2968 return (ssl->ctx); 2969} 2970 2971#ifndef OPENSSL_NO_STDIO 2972int 2973SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2974{ 2975 return (X509_STORE_set_default_paths(ctx->cert_store)); 2976} 2977 2978int 2979SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2980 const char *CApath) 2981{ 2982 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2983} 2984#endif 2985 2986void 2987SSL_set_info_callback(SSL *ssl, 2988 void (*cb)(const SSL *ssl, int type, int val)) 2989{ 2990 ssl->info_callback = cb; 2991} 2992 2993/* 2994 * One compiler (Diab DCC) doesn't like argument names in returned 2995 * function pointer. 2996 */ 2997void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2998{ 2999 return (ssl->info_callback); 3000} 3001 3002int 3003SSL_state(const SSL *ssl) 3004{ 3005 return (ssl->state); 3006} 3007 3008void 3009SSL_set_state(SSL *ssl, int state) 3010{ 3011 ssl->state = state; 3012} 3013 3014void 3015SSL_set_verify_result(SSL *ssl, long arg) 3016{ 3017 ssl->verify_result = arg; 3018} 3019 3020long 3021SSL_get_verify_result(const SSL *ssl) 3022{ 3023 return (ssl->verify_result); 3024} 3025 3026int 3027SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3028 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3029{ 3030 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3031 new_func, dup_func, free_func)); 3032} 3033 3034int 3035SSL_set_ex_data(SSL *s, int idx, void *arg) 3036{ 3037 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3038} 3039 3040void * 3041SSL_get_ex_data(const SSL *s, int idx) 3042{ 3043 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3044} 3045 3046int 3047SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3048 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3049{ 3050 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3051 new_func, dup_func, free_func)); 3052} 3053 3054int 3055SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3056{ 3057 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3058} 3059 3060void * 3061SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3062{ 3063 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3064} 3065 3066int 3067ssl_ok(SSL *s) 3068{ 3069 return (1); 3070} 3071 3072X509_STORE * 3073SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3074{ 3075 return (ctx->cert_store); 3076} 3077 3078void 3079SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3080{ 3081 if (ctx->cert_store != NULL) 3082 X509_STORE_free(ctx->cert_store); 3083 ctx->cert_store = store; 3084} 3085 3086int 3087SSL_want(const SSL *s) 3088{ 3089 return (s->rwstate); 3090} 3091 3092/*! 3093 * \brief Set the callback for generating temporary RSA keys. 3094 * \param ctx the SSL context. 3095 * \param cb the callback 3096 */ 3097 3098void 3099SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 3100 int is_export, 3101int keylength)) 3102{ 3103 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3104} 3105 3106void 3107SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 3108 int is_export, 3109int keylength)) 3110{ 3111 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3112} 3113 3114#ifdef DOXYGEN 3115/*! 3116 * \brief The RSA temporary key callback function. 3117 * \param ssl the SSL session. 3118 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3119 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3120 * of the required key in bits. 3121 * \return the temporary RSA key. 3122 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3123 */ 3124 3125RSA * 3126cb(SSL *ssl, int is_export, int keylength) 3127{} 3128#endif 3129 3130/*! 3131 * \brief Set the callback for generating temporary DH keys. 3132 * \param ctx the SSL context. 3133 * \param dh the callback 3134 */ 3135 3136#ifndef OPENSSL_NO_DH 3137void 3138SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3139 int keylength)) 3140{ 3141 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3142} 3143 3144void 3145SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3146 int keylength)) 3147{ 3148 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3149} 3150#endif 3151 3152#ifndef OPENSSL_NO_ECDH 3153void 3154SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3155 int is_export, int keylength)) 3156{ 3157 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3158 (void (*)(void))ecdh); 3159} 3160 3161void 3162SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3163 int keylength)) 3164{ 3165 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3166} 3167#endif 3168 3169#ifndef OPENSSL_NO_PSK 3170int 3171SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3172{ 3173 if (identity_hint != NULL && strlen(identity_hint) > 3174 PSK_MAX_IDENTITY_LEN) { 3175 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3176 SSL_R_DATA_LENGTH_TOO_LONG); 3177 return (0); 3178 } 3179 if (ctx->psk_identity_hint != NULL) 3180 free(ctx->psk_identity_hint); 3181 if (identity_hint != NULL) { 3182 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3183 if (ctx->psk_identity_hint == NULL) 3184 return (0); 3185 } else 3186 ctx->psk_identity_hint = NULL; 3187 return (1); 3188} 3189 3190int 3191SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3192{ 3193 if (s == NULL) 3194 return (0); 3195 3196 if (s->session == NULL) 3197 return (1); /* session not created yet, ignored */ 3198 3199 if (identity_hint != NULL && strlen(identity_hint) > 3200 PSK_MAX_IDENTITY_LEN) { 3201 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 3202 SSL_R_DATA_LENGTH_TOO_LONG); 3203 return (0); 3204 } 3205 if (s->session->psk_identity_hint != NULL) 3206 free(s->session->psk_identity_hint); 3207 if (identity_hint != NULL) { 3208 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3209 if (s->session->psk_identity_hint == NULL) 3210 return (0); 3211 } else 3212 s->session->psk_identity_hint = NULL; 3213 return (1); 3214} 3215 3216const char * 3217SSL_get_psk_identity_hint(const SSL *s) 3218{ 3219 if (s == NULL || s->session == NULL) 3220 return (NULL); 3221 return (s->session->psk_identity_hint); 3222} 3223 3224const char * 3225SSL_get_psk_identity(const SSL *s) 3226{ 3227 if (s == NULL || s->session == NULL) 3228 return (NULL); 3229 return (s->session->psk_identity); 3230} 3231 3232void 3233SSL_set_psk_client_callback(SSL *s, 3234 unsigned int (*cb)(SSL *ssl, const char *hint, 3235 char *identity, unsigned int max_identity_len, unsigned char *psk, 3236 unsigned int max_psk_len)) 3237{ 3238 s->psk_client_callback = cb; 3239} 3240 3241void 3242SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3243 unsigned int (*cb)(SSL *ssl, const char *hint, 3244 char *identity, unsigned int max_identity_len, unsigned char *psk, 3245 unsigned int max_psk_len)) 3246{ 3247 ctx->psk_client_callback = cb; 3248} 3249 3250void 3251SSL_set_psk_server_callback(SSL *s, 3252 unsigned int (*cb)(SSL *ssl, const char *identity, 3253 unsigned char *psk, unsigned int max_psk_len)) 3254{ 3255 s->psk_server_callback = cb; 3256} 3257 3258void 3259SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3260 unsigned int (*cb)(SSL *ssl, const char *identity, 3261 unsigned char *psk, unsigned int max_psk_len)) 3262{ 3263 ctx->psk_server_callback = cb; 3264} 3265#endif 3266 3267void 3268SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3269 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3270{ 3271 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3272 (void (*)(void))cb); 3273} 3274 3275void 3276SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3277 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3278{ 3279 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3280} 3281 3282/* 3283 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3284 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3285 * any. If EVP_MD pointer is passed, initializes ctx with this md 3286 * Returns newly allocated ctx; 3287 */ 3288EVP_MD_CTX * 3289ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3290{ 3291 ssl_clear_hash_ctx(hash); 3292 *hash = EVP_MD_CTX_create(); 3293 if (md) 3294 EVP_DigestInit_ex(*hash, md, NULL); 3295 return (*hash); 3296} 3297 3298void 3299ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3300{ 3301 if (*hash) 3302 EVP_MD_CTX_destroy(*hash); 3303 *hash = NULL; 3304} 3305 3306void 3307SSL_set_debug(SSL *s, int debug) 3308{ 3309 s->debug = debug; 3310} 3311 3312int 3313SSL_cache_hit(SSL *s) 3314{ 3315 return (s->hit); 3316} 3317 3318IMPLEMENT_STACK_OF(SSL_CIPHER) 3319IMPLEMENT_STACK_OF(SSL_COMP) 3320IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3321 ssl_cipher_id); 3322