ssl_lib.c revision 1.30
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#ifdef REF_CHECK 146# include <assert.h> 147#endif 148#include <stdio.h> 149#include "ssl_locl.h" 150#include "kssl_lcl.h" 151#include <openssl/objects.h> 152#include <openssl/lhash.h> 153#include <openssl/x509v3.h> 154#include <openssl/rand.h> 155#include <openssl/ocsp.h> 156#ifndef OPENSSL_NO_DH 157#include <openssl/dh.h> 158#endif 159#ifndef OPENSSL_NO_ENGINE 160#include <openssl/engine.h> 161#endif 162 163const char *SSL_version_str = OPENSSL_VERSION_TEXT; 164 165SSL3_ENC_METHOD ssl3_undef_enc_method = { 166 /* evil casts, but these functions are only called if there's a library bug */ 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{ 188 189 if (s->method == NULL) { 190 SSLerr(SSL_F_SSL_CLEAR, 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 0 /* Disabled since version 1.10 of this file (early return not 204 * needed because SSL_clear is not called when doing renegotiation) */ 205 /* This is set if we are doing dynamic renegotiation so keep 206 * the old cipher. It is sort of a SSL_clear_lite :-) */ 207 if (s->renegotiate) 208 return (1); 209#else 210 if (s->renegotiate) { 211 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 212 return 0; 213 } 214#endif 215 216 s->type = 0; 217 218 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 219 220 s->version = s->method->version; 221 s->client_version = s->version; 222 s->rwstate = SSL_NOTHING; 223 s->rstate = SSL_ST_READ_HEADER; 224#if 0 225 s->read_ahead = s->ctx->read_ahead; 226#endif 227 228 if (s->init_buf != NULL) { 229 BUF_MEM_free(s->init_buf); 230 s->init_buf = NULL; 231 } 232 233 ssl_clear_cipher_ctx(s); 234 ssl_clear_hash_ctx(&s->read_hash); 235 ssl_clear_hash_ctx(&s->write_hash); 236 237 s->first_packet = 0; 238 239#if 1 240 /* Check to see if we were changed into a different method, if 241 * so, revert back if we are not doing session-id reuse. */ 242 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) { 243 s->method->ssl_free(s); 244 s->method = s->ctx->method; 245 if (!s->method->ssl_new(s)) 246 return (0); 247 } else 248#endif 249 s->method->ssl_clear(s); 250 return (1); 251} 252 253/* Used to change an SSL_CTXs default SSL method type */ 254int 255SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 256{ 257 STACK_OF(SSL_CIPHER) *sk; 258 259 ctx->method = meth; 260 261 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 262 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 263 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 264 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 265 return (0); 266 } 267 return (1); 268} 269 270SSL 271*SSL_new(SSL_CTX *ctx) 272{ 273 SSL *s; 274 275 if (ctx == NULL) { 276 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 277 return (NULL); 278 } 279 if (ctx->method == NULL) { 280 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 281 return (NULL); 282 } 283 284 s = (SSL *)OPENSSL_malloc(sizeof(SSL)); 285 if (s == NULL) 286 goto err; 287 memset(s, 0, sizeof(SSL)); 288 289#ifndef OPENSSL_NO_KRB5 290 s->kssl_ctx = kssl_ctx_new(); 291#endif /* OPENSSL_NO_KRB5 */ 292 293 s->options = ctx->options; 294 s->mode = ctx->mode; 295 s->max_cert_list = ctx->max_cert_list; 296 297 if (ctx->cert != NULL) { 298 /* Earlier library versions used to copy the pointer to 299 * the CERT, not its contents; only when setting new 300 * parameters for the per-SSL copy, ssl_cert_new would be 301 * called (and the direct reference to the per-SSL_CTX 302 * settings would be lost, but those still were indirectly 303 * accessed for various purposes, and for that reason they 304 * used to be known as s->ctx->default_cert). 305 * Now we don't look at the SSL_CTX's CERT after having 306 * duplicated it once. */ 307 308 s->cert = ssl_cert_dup(ctx->cert); 309 if (s->cert == NULL) 310 goto err; 311 } else 312 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 313 314 s->read_ahead = ctx->read_ahead; 315 s->msg_callback = ctx->msg_callback; 316 s->msg_callback_arg = ctx->msg_callback_arg; 317 s->verify_mode = ctx->verify_mode; 318#if 0 319 s->verify_depth = ctx->verify_depth; 320#endif 321 s->sid_ctx_length = ctx->sid_ctx_length; 322 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 323 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 324 s->verify_callback = ctx->default_verify_callback; 325 s->generate_session_id = ctx->generate_session_id; 326 327 s->param = X509_VERIFY_PARAM_new(); 328 if (!s->param) 329 goto err; 330 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 331#if 0 332 s->purpose = ctx->purpose; 333 s->trust = ctx->trust; 334#endif 335 s->quiet_shutdown = ctx->quiet_shutdown; 336 s->max_send_fragment = ctx->max_send_fragment; 337 338 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 339 s->ctx = ctx; 340#ifndef OPENSSL_NO_TLSEXT 341 s->tlsext_debug_cb = 0; 342 s->tlsext_debug_arg = NULL; 343 s->tlsext_ticket_expected = 0; 344 s->tlsext_status_type = -1; 345 s->tlsext_status_expected = 0; 346 s->tlsext_ocsp_ids = NULL; 347 s->tlsext_ocsp_exts = NULL; 348 s->tlsext_ocsp_resp = NULL; 349 s->tlsext_ocsp_resplen = -1; 350 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 351 s->initial_ctx = ctx; 352# ifndef OPENSSL_NO_NEXTPROTONEG 353 s->next_proto_negotiated = NULL; 354# endif 355#endif 356 357 s->verify_result = X509_V_OK; 358 359 s->method = ctx->method; 360 361 if (!s->method->ssl_new(s)) 362 goto err; 363 364 s->references = 1; 365 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 366 367 SSL_clear(s); 368 369 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 370 371#ifndef OPENSSL_NO_PSK 372 s->psk_client_callback = ctx->psk_client_callback; 373 s->psk_server_callback = ctx->psk_server_callback; 374#endif 375 376 return (s); 377err: 378 if (s != NULL) { 379 if (s->cert != NULL) 380 ssl_cert_free(s->cert); 381 if (s->ctx != NULL) 382 SSL_CTX_free(s->ctx); /* decrement reference count */ 383 OPENSSL_free(s); 384 } 385 SSLerr(SSL_F_SSL_NEW, 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, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 395 return 0; 396 } 397 ctx->sid_ctx_length = sid_ctx_len; 398 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 399 400 return 1; 401} 402 403int 404SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 405 unsigned int sid_ctx_len) 406{ 407 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 408 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 409 return 0; 410 } 411 ssl->sid_ctx_length = sid_ctx_len; 412 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 413 414 return 1; 415} 416 417int 418SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 419{ 420 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 421 ctx->generate_session_id = cb; 422 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 423 return 1; 424} 425 426int 427SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 428{ 429 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 430 ssl->generate_session_id = cb; 431 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 432 return 1; 433} 434 435int 436SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 437 unsigned int id_len) 438{ 439 /* 440 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 441 * shows how we can "construct" a session to give us the desired 442 * check - ie. to find if there's a session in the hash table 443 * that would conflict with any new session built out of this 444 * id/id_len and the ssl_version in use by this SSL. 445 */ 446 SSL_SESSION r, *p; 447 448 if (id_len > sizeof r.session_id) 449 return 0; 450 451 r.ssl_version = ssl->version; 452 r.session_id_length = id_len; 453 memcpy(r.session_id, id, id_len); 454 455 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 456 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 457 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 458 return (p != NULL); 459} 460 461int 462SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 463{ 464 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 465} 466 467int 468SSL_set_purpose(SSL *s, int purpose) 469{ 470 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 471} 472 473int 474SSL_CTX_set_trust(SSL_CTX *s, int trust) 475{ 476 return X509_VERIFY_PARAM_set_trust(s->param, trust); 477} 478 479int 480SSL_set_trust(SSL *s, int trust) 481{ 482 return X509_VERIFY_PARAM_set_trust(s->param, trust); 483} 484 485int 486SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 487{ 488 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 489} 490 491int 492SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 493{ 494 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 495} 496 497void 498SSL_free(SSL *s) 499{ 500 int i; 501 502 if (s == NULL) 503 return; 504 505 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 506#ifdef REF_PRINT 507 REF_PRINT("SSL", s); 508#endif 509 if (i > 0) 510 return; 511#ifdef REF_CHECK 512 if (i < 0) { 513 fprintf(stderr, "SSL_free, bad reference count\n"); 514 abort(); /* ok */ 515 } 516#endif 517 518 if (s->param) 519 X509_VERIFY_PARAM_free(s->param); 520 521 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 522 523 if (s->bbio != NULL) { 524 /* If the buffering BIO is in place, pop it off */ 525 if (s->bbio == s->wbio) { 526 s->wbio = BIO_pop(s->wbio); 527 } 528 BIO_free(s->bbio); 529 s->bbio = NULL; 530 } 531 if (s->rbio != NULL) 532 BIO_free_all(s->rbio); 533 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 534 BIO_free_all(s->wbio); 535 536 if (s->init_buf != NULL) 537 BUF_MEM_free(s->init_buf); 538 539 /* add extra stuff */ 540 if (s->cipher_list != NULL) 541 sk_SSL_CIPHER_free(s->cipher_list); 542 if (s->cipher_list_by_id != NULL) 543 sk_SSL_CIPHER_free(s->cipher_list_by_id); 544 545 /* Make the next call work :-) */ 546 if (s->session != NULL) { 547 ssl_clear_bad_session(s); 548 SSL_SESSION_free(s->session); 549 } 550 551 ssl_clear_cipher_ctx(s); 552 ssl_clear_hash_ctx(&s->read_hash); 553 ssl_clear_hash_ctx(&s->write_hash); 554 555 if (s->cert != NULL) 556 ssl_cert_free(s->cert); 557 /* Free up if allocated */ 558 559#ifndef OPENSSL_NO_TLSEXT 560 if (s->tlsext_hostname) 561 OPENSSL_free(s->tlsext_hostname); 562 if (s->initial_ctx) 563 SSL_CTX_free(s->initial_ctx); 564#ifndef OPENSSL_NO_EC 565 if (s->tlsext_ecpointformatlist) 566 OPENSSL_free(s->tlsext_ecpointformatlist); 567 if (s->tlsext_ellipticcurvelist) 568 OPENSSL_free(s->tlsext_ellipticcurvelist); 569#endif /* OPENSSL_NO_EC */ 570 if (s->tlsext_opaque_prf_input) 571 OPENSSL_free(s->tlsext_opaque_prf_input); 572 if (s->tlsext_ocsp_exts) 573 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 574 X509_EXTENSION_free); 575 if (s->tlsext_ocsp_ids) 576 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 577 if (s->tlsext_ocsp_resp) 578 OPENSSL_free(s->tlsext_ocsp_resp); 579#endif 580 581 if (s->client_CA != NULL) 582 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 583 584 if (s->method != NULL) 585 s->method->ssl_free(s); 586 587 if (s->ctx) 588 SSL_CTX_free(s->ctx); 589 590#ifndef OPENSSL_NO_KRB5 591 if (s->kssl_ctx != NULL) 592 kssl_ctx_free(s->kssl_ctx); 593#endif /* OPENSSL_NO_KRB5 */ 594 595#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 596 if (s->next_proto_negotiated) 597 OPENSSL_free(s->next_proto_negotiated); 598#endif 599 600#ifndef OPENSSL_NO_SRTP 601 if (s->srtp_profiles) 602 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 603#endif 604 605 OPENSSL_free(s); 606} 607 608void 609SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 610{ 611 /* If the output buffering BIO is still in place, remove it 612 */ 613 if (s->bbio != NULL) { 614 if (s->wbio == s->bbio) { 615 s->wbio = s->wbio->next_bio; 616 s->bbio->next_bio = NULL; 617 } 618 } 619 if ((s->rbio != NULL) && (s->rbio != rbio)) 620 BIO_free_all(s->rbio); 621 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 622 BIO_free_all(s->wbio); 623 s->rbio = rbio; 624 s->wbio = wbio; 625} 626 627BIO 628*SSL_get_rbio(const SSL *s) 629 { return (s->rbio); 630} 631 632BIO 633*SSL_get_wbio(const SSL *s) 634 { return (s->wbio); 635} 636 637int 638SSL_get_fd(const SSL *s) 639{ 640 return (SSL_get_rfd(s)); 641} 642 643int 644SSL_get_rfd(const SSL *s) 645{ 646 int ret = -1; 647 BIO *b, *r; 648 649 b = SSL_get_rbio(s); 650 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 651 if (r != NULL) 652 BIO_get_fd(r, &ret); 653 return (ret); 654} 655 656int 657SSL_get_wfd(const SSL *s) 658{ 659 int ret = -1; 660 BIO *b, *r; 661 662 b = SSL_get_wbio(s); 663 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 664 if (r != NULL) 665 BIO_get_fd(r, &ret); 666 return (ret); 667} 668 669#ifndef OPENSSL_NO_SOCK 670int 671SSL_set_fd(SSL *s, int fd) 672{ 673 int ret = 0; 674 BIO *bio = NULL; 675 676 bio = BIO_new(BIO_s_socket()); 677 678 if (bio == NULL) { 679 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 680 goto err; 681 } 682 BIO_set_fd(bio, fd, BIO_NOCLOSE); 683 SSL_set_bio(s, bio, bio); 684 ret = 1; 685err: 686 return (ret); 687} 688 689int 690SSL_set_wfd(SSL *s, int fd) 691{ 692 int ret = 0; 693 BIO *bio = NULL; 694 695 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 696 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 697 bio = BIO_new(BIO_s_socket()); 698 699 if (bio == NULL) 700 { SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 701 goto err; 702 } 703 BIO_set_fd(bio, fd, BIO_NOCLOSE); 704 SSL_set_bio(s, SSL_get_rbio(s), bio); 705 } else 706 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 707 ret = 1; 708err: 709 return (ret); 710} 711 712int 713SSL_set_rfd(SSL *s, int fd) 714{ 715 int ret = 0; 716 BIO *bio = NULL; 717 718 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 719 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 720 bio = BIO_new(BIO_s_socket()); 721 722 if (bio == NULL) { 723 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 724 goto err; 725 } 726 BIO_set_fd(bio, fd, BIO_NOCLOSE); 727 SSL_set_bio(s, bio, SSL_get_wbio(s)); 728 } else 729 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 730 ret = 1; 731err: 732 return (ret); 733} 734#endif 735 736 737/* return length of latest Finished message we sent, copy to 'buf' */ 738size_t 739SSL_get_finished(const SSL *s, void *buf, size_t count) 740{ 741 size_t ret = 0; 742 743 if (s->s3 != NULL) { 744 ret = s->s3->tmp.finish_md_len; 745 if (count > ret) 746 count = ret; 747 memcpy(buf, s->s3->tmp.finish_md, count); 748 } 749 return ret; 750} 751 752/* return length of latest Finished message we expected, copy to 'buf' */ 753size_t 754SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 755{ 756 size_t ret = 0; 757 758 if (s->s3 != NULL) { 759 ret = s->s3->tmp.peer_finish_md_len; 760 if (count > ret) 761 count = ret; 762 memcpy(buf, s->s3->tmp.peer_finish_md, count); 763 } 764 return ret; 765} 766 767 768int 769SSL_get_verify_mode(const SSL *s) 770{ 771 return (s->verify_mode); 772} 773 774int 775SSL_get_verify_depth(const SSL *s) 776{ 777 return X509_VERIFY_PARAM_get_depth(s->param); 778} 779 780int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 781{ 782 return (s->verify_callback); 783} 784 785int 786SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 787{ 788 return (ctx->verify_mode); 789} 790 791int 792SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 793{ 794 return X509_VERIFY_PARAM_get_depth(ctx->param); 795} 796 797int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 798{ 799 return (ctx->default_verify_callback); 800} 801 802void 803SSL_set_verify(SSL *s, int mode, 804 int (*callback)(int ok, X509_STORE_CTX *ctx)) 805{ 806 s->verify_mode = mode; 807 if (callback != NULL) 808 s->verify_callback = callback; 809} 810 811void 812SSL_set_verify_depth(SSL *s, int depth) 813{ 814 X509_VERIFY_PARAM_set_depth(s->param, depth); 815} 816 817void 818SSL_set_read_ahead(SSL *s, int yes) 819{ 820 s->read_ahead = yes; 821} 822 823int 824SSL_get_read_ahead(const SSL *s) 825{ 826 return (s->read_ahead); 827} 828 829int 830SSL_pending(const SSL *s) 831{ 832 /* SSL_pending cannot work properly if read-ahead is enabled 833 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 834 * and it is impossible to fix since SSL_pending cannot report 835 * errors that may be observed while scanning the new data. 836 * (Note that SSL_pending() is often used as a boolean value, 837 * so we'd better not return -1.) 838 */ 839 return (s->method->ssl_pending(s)); 840} 841 842X509 843*SSL_get_peer_certificate(const SSL *s) 844{ 845 X509 *r; 846 847 if ((s == NULL) || (s->session == NULL)) 848 r = NULL; 849 else 850 r = s->session->peer; 851 852 if (r == NULL) 853 return (r); 854 855 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 856 857 return (r); 858} 859 860STACK_OF(X509) 861*SSL_get_peer_cert_chain(const SSL *s) 862{ 863 STACK_OF(X509) *r; 864 865 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 866 r = NULL; 867 else 868 r = s->session->sess_cert->cert_chain; 869 870 /* If we are a client, cert_chain includes the peer's own 871 * certificate; 872if we are a server, it does not. */ 873 874 return (r); 875} 876 877/* Now in theory, since the calling process own 't' it should be safe to 878 * modify. We need to be able to read f without being hassled */ 879void 880SSL_copy_session_id(SSL *t, const SSL *f) 881{ 882 CERT *tmp; 883 884 /* Do we need to to SSL locking? */ 885 SSL_set_session(t, SSL_get_session(f)); 886 887 /* what if we are setup as SSLv2 but want to talk SSLv3 or 888 * vice-versa */ 889 if (t->method != f->method) { 890 t->method->ssl_free(t); /* cleanup current */ 891 t->method=f->method; /* change method */ 892 t->method->ssl_new(t); /* setup new */ 893 } 894 895 tmp = t->cert; 896 if (f->cert != NULL) { 897 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 898 t->cert = f->cert; 899 } else 900 t->cert = NULL; 901 if (tmp != NULL) 902 ssl_cert_free(tmp); 903 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 904} 905 906/* Fix this so it checks all the valid key/cert options */ 907int 908SSL_CTX_check_private_key(const SSL_CTX *ctx) 909{ 910 if ((ctx == NULL) || 911 (ctx->cert == NULL) || 912 (ctx->cert->key->x509 == NULL)) { 913 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 914 return (0); 915 } 916 if (ctx->cert->key->privatekey == NULL) { 917 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 918 return (0); 919 } 920 return (X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 921} 922 923/* Fix this function so that it takes an optional type parameter */ 924int 925SSL_check_private_key(const SSL *ssl) 926{ 927 if (ssl == NULL) { 928 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 929 return (0); 930 } 931 if (ssl->cert == NULL) { 932 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 933 return 0; 934 } 935 if (ssl->cert->key->x509 == NULL) { 936 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 937 return (0); 938 } 939 if (ssl->cert->key->privatekey == NULL) { 940 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 941 return (0); 942 } 943 return(X509_check_private_key(ssl->cert->key->x509, 944 ssl->cert->key->privatekey)); 945} 946 947int 948SSL_accept(SSL *s) 949{ 950 if (s->handshake_func == 0) 951 /* Not properly initialized yet */ 952 SSL_set_accept_state(s); 953 954 return (s->method->ssl_accept(s)); 955} 956 957int 958SSL_connect(SSL *s) 959{ 960 if (s->handshake_func == 0) 961 /* Not properly initialized yet */ 962 SSL_set_connect_state(s); 963 964 return (s->method->ssl_connect(s)); 965} 966 967long 968SSL_get_default_timeout(const SSL *s) 969{ 970 return (s->method->get_timeout()); 971} 972 973int 974SSL_read(SSL *s, void *buf, int num) 975{ 976 if (s->handshake_func == 0) { 977 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 978 return -1; 979 } 980 981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 982 s->rwstate = SSL_NOTHING; 983 return (0); 984 } 985 return (s->method->ssl_read(s, buf, num)); 986} 987 988int 989SSL_peek(SSL *s, void *buf, int num) 990{ 991 if (s->handshake_func == 0) { 992 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 993 return -1; 994 } 995 996 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 997 return (0); 998 } 999 return (s->method->ssl_peek(s, buf, num)); 1000} 1001 1002int 1003SSL_write(SSL *s, const void *buf, int num) 1004{ 1005 if (s->handshake_func == 0) { 1006 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 1007 return -1; 1008 } 1009 1010 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1011 s->rwstate = SSL_NOTHING; 1012 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 1013 return (-1); 1014 } 1015 return (s->method->ssl_write(s, buf, num)); 1016} 1017 1018int 1019SSL_shutdown(SSL *s) 1020{ 1021 /* Note that this function behaves differently from what one might 1022 * expect. Return values are 0 for no success (yet), 1023 * 1 for success; but calling it once is usually not enough, 1024 * even if blocking I/O is used (see ssl3_shutdown). 1025 */ 1026 1027 if (s->handshake_func == 0) { 1028 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1029 return -1; 1030 } 1031 1032 if ((s != NULL) && !SSL_in_init(s)) 1033 return (s->method->ssl_shutdown(s)); 1034 else 1035 return (1); 1036} 1037 1038int 1039SSL_renegotiate(SSL *s) 1040{ 1041 if (s->renegotiate == 0) 1042 s->renegotiate = 1; 1043 1044 s->new_session = 1; 1045 1046 return (s->method->ssl_renegotiate(s)); 1047} 1048 1049int 1050SSL_renegotiate_abbreviated(SSL *s) 1051{ 1052 if (s->renegotiate == 0) 1053 s->renegotiate = 1; 1054 1055 s->new_session = 0; 1056 1057 return (s->method->ssl_renegotiate(s)); 1058} 1059 1060int 1061SSL_renegotiate_pending(SSL *s) 1062{ 1063 /* becomes true when negotiation is requested; 1064 * false again once a handshake has finished */ 1065 return (s->renegotiate != 0); 1066} 1067 1068long 1069SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1070{ 1071 long l; 1072 1073 switch (cmd) { 1074 case SSL_CTRL_GET_READ_AHEAD: 1075 return (s->read_ahead); 1076 case SSL_CTRL_SET_READ_AHEAD: 1077 l = s->read_ahead; 1078 s->read_ahead = larg; 1079 return (l); 1080 1081 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1082 s->msg_callback_arg = parg; 1083 return 1; 1084 1085 case SSL_CTRL_OPTIONS: 1086 return (s->options|=larg); 1087 case SSL_CTRL_CLEAR_OPTIONS: 1088 return (s->options&=~larg); 1089 case SSL_CTRL_MODE: 1090 return (s->mode|=larg); 1091 case SSL_CTRL_CLEAR_MODE: 1092 return (s->mode &=~larg); 1093 case SSL_CTRL_GET_MAX_CERT_LIST: 1094 return (s->max_cert_list); 1095 case SSL_CTRL_SET_MAX_CERT_LIST: 1096 l = s->max_cert_list; 1097 s->max_cert_list = larg; 1098 return (l); 1099 case SSL_CTRL_SET_MTU: 1100#ifndef OPENSSL_NO_DTLS1 1101 if (larg < (long)dtls1_min_mtu()) 1102 return 0; 1103#endif 1104 1105 if (SSL_version(s) == DTLS1_VERSION || 1106 SSL_version(s) == DTLS1_BAD_VER) { 1107 s->d1->mtu = larg; 1108 return larg; 1109 } 1110 return 0; 1111 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1112 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1113 return 0; 1114 s->max_send_fragment = larg; 1115 return 1; 1116 case SSL_CTRL_GET_RI_SUPPORT: 1117 if (s->s3) 1118 return s->s3->send_connection_binding; 1119 else return 0; 1120 default: 1121 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1122 } 1123} 1124 1125long 1126SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1127{ 1128 switch (cmd) { 1129 case SSL_CTRL_SET_MSG_CALLBACK: 1130 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1131 return 1; 1132 1133 default: 1134 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1135 } 1136} 1137 1138LHASH_OF(SSL_SESSION) 1139*SSL_CTX_sessions(SSL_CTX *ctx) 1140{ 1141 return ctx->sessions; 1142} 1143 1144long 1145SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1146{ 1147 long l; 1148 1149 switch (cmd) { 1150 case SSL_CTRL_GET_READ_AHEAD: 1151 return (ctx->read_ahead); 1152 case SSL_CTRL_SET_READ_AHEAD: 1153 l = ctx->read_ahead; 1154 ctx->read_ahead = larg; 1155 return (l); 1156 1157 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1158 ctx->msg_callback_arg = parg; 1159 return 1; 1160 1161 case SSL_CTRL_GET_MAX_CERT_LIST: 1162 return (ctx->max_cert_list); 1163 case SSL_CTRL_SET_MAX_CERT_LIST: 1164 l = ctx->max_cert_list; 1165 ctx->max_cert_list = larg; 1166 return (l); 1167 1168 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1169 l = ctx->session_cache_size; 1170 ctx->session_cache_size = larg; 1171 return (l); 1172 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1173 return (ctx->session_cache_size); 1174 case SSL_CTRL_SET_SESS_CACHE_MODE: 1175 l = ctx->session_cache_mode; 1176 ctx->session_cache_mode = larg; 1177 return (l); 1178 case SSL_CTRL_GET_SESS_CACHE_MODE: 1179 return (ctx->session_cache_mode); 1180 1181 case SSL_CTRL_SESS_NUMBER: 1182 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1183 case SSL_CTRL_SESS_CONNECT: 1184 return (ctx->stats.sess_connect); 1185 case SSL_CTRL_SESS_CONNECT_GOOD: 1186 return (ctx->stats.sess_connect_good); 1187 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1188 return (ctx->stats.sess_connect_renegotiate); 1189 case SSL_CTRL_SESS_ACCEPT: 1190 return (ctx->stats.sess_accept); 1191 case SSL_CTRL_SESS_ACCEPT_GOOD: 1192 return (ctx->stats.sess_accept_good); 1193 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1194 return (ctx->stats.sess_accept_renegotiate); 1195 case SSL_CTRL_SESS_HIT: 1196 return (ctx->stats.sess_hit); 1197 case SSL_CTRL_SESS_CB_HIT: 1198 return (ctx->stats.sess_cb_hit); 1199 case SSL_CTRL_SESS_MISSES: 1200 return (ctx->stats.sess_miss); 1201 case SSL_CTRL_SESS_TIMEOUTS: 1202 return (ctx->stats.sess_timeout); 1203 case SSL_CTRL_SESS_CACHE_FULL: 1204 return (ctx->stats.sess_cache_full); 1205 case SSL_CTRL_OPTIONS: 1206 return (ctx->options|=larg); 1207 case SSL_CTRL_CLEAR_OPTIONS: 1208 return (ctx->options&=~larg); 1209 case SSL_CTRL_MODE: 1210 return (ctx->mode|=larg); 1211 case SSL_CTRL_CLEAR_MODE: 1212 return (ctx->mode&=~larg); 1213 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1214 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1215 return 0; 1216 ctx->max_send_fragment = larg; 1217 return 1; 1218 default: 1219 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1220 } 1221} 1222 1223long 1224SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1225{ 1226 switch (cmd) { 1227 case SSL_CTRL_SET_MSG_CALLBACK: 1228 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1229 return 1; 1230 1231 default: 1232 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1233 } 1234} 1235 1236int 1237ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1238{ 1239 long l; 1240 1241 l = a->id - b->id; 1242 if (l == 0L) 1243 return (0); 1244 else 1245 return ((l > 0) ? 1:-1); 1246} 1247 1248int 1249ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1250 const SSL_CIPHER * const *bp) 1251{ 1252 long l; 1253 1254 l = (*ap)->id - (*bp)->id; 1255 if (l == 0L) 1256 return (0); 1257 else 1258 return ((l > 0) ? 1:-1); 1259} 1260 1261/** return a STACK of the ciphers available for the SSL and in order of 1262 * preference */ 1263STACK_OF(SSL_CIPHER) 1264*SSL_get_ciphers(const SSL *s) 1265{ 1266 if (s != NULL) { 1267 if (s->cipher_list != NULL) { 1268 return (s->cipher_list); 1269 } else if ((s->ctx != NULL) && 1270 (s->ctx->cipher_list != NULL)) { 1271 return (s->ctx->cipher_list); 1272 } 1273 } 1274 return (NULL); 1275} 1276 1277/** return a STACK of the ciphers available for the SSL and in order of 1278 * algorithm id */ 1279STACK_OF(SSL_CIPHER) 1280*ssl_get_ciphers_by_id(SSL *s) 1281{ 1282 if (s != NULL) { 1283 if (s->cipher_list_by_id != NULL) { 1284 return (s->cipher_list_by_id); 1285 } else if ((s->ctx != NULL) && 1286 (s->ctx->cipher_list_by_id != NULL)) { 1287 return (s->ctx->cipher_list_by_id); 1288 } 1289 } 1290 return (NULL); 1291} 1292 1293/** The old interface to get the same thing as SSL_get_ciphers() */ 1294const char 1295*SSL_get_cipher_list(const SSL *s, int n) 1296{ 1297 SSL_CIPHER *c; 1298 STACK_OF(SSL_CIPHER) *sk; 1299 1300 if (s == NULL) 1301 return (NULL); 1302 sk = SSL_get_ciphers(s); 1303 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1304 return (NULL); 1305 c = sk_SSL_CIPHER_value(sk, n); 1306 if (c == NULL) 1307 return (NULL); 1308 return (c->name); 1309} 1310 1311/** specify the ciphers to be used by default by the SSL_CTX */ 1312int 1313SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1314{ 1315 STACK_OF(SSL_CIPHER) *sk; 1316 1317 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1318 &ctx->cipher_list_by_id, str); 1319 /* ssl_create_cipher_list may return an empty stack if it 1320 * was unable to find a cipher matching the given rule string 1321 * (for example if the rule string specifies a cipher which 1322 * has been disabled). This is not an error as far as 1323 * ssl_create_cipher_list is concerned, and hence 1324 * ctx->cipher_list and ctx->cipher_list_by_id has been 1325 * updated. */ 1326 if (sk == NULL) 1327 return 0; 1328 else if (sk_SSL_CIPHER_num(sk) == 0) { 1329 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1330 return 0; 1331 } 1332 return 1; 1333} 1334 1335/** specify the ciphers to be used by the SSL */ 1336int 1337SSL_set_cipher_list(SSL *s, const char *str) 1338{ 1339 STACK_OF(SSL_CIPHER) *sk; 1340 1341 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1342 &s->cipher_list_by_id, str); 1343 /* see comment in SSL_CTX_set_cipher_list */ 1344 if (sk == NULL) 1345 return 0; 1346 else if (sk_SSL_CIPHER_num(sk) == 0) { 1347 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1348 return 0; 1349 } 1350 return 1; 1351} 1352 1353/* works well for SSLv2, not so good for SSLv3 */ 1354char 1355*SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1356{ 1357 char *end; 1358 STACK_OF(SSL_CIPHER) *sk; 1359 SSL_CIPHER *c; 1360 size_t curlen = 0; 1361 int i; 1362 1363 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1364 (len < 2)) 1365 return (NULL); 1366 1367 sk = s->session->ciphers; 1368 buf[0] = '\0'; 1369 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1370 c = sk_SSL_CIPHER_value(sk, i); 1371 end = buf + curlen; 1372 if (strlcat(buf, c->name, len) >= len || 1373 (curlen = strlcat(buf, ":", len)) >= len) { 1374 /* remove truncated cipher from list */ 1375 *end = '\0'; 1376 break; 1377 } 1378 } 1379 /* remove trailing colon */ 1380 if ((end = strrchr(buf, ':')) != NULL) 1381 *end = '\0'; 1382 return (buf); 1383} 1384 1385int 1386ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1387 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1388{ 1389 int i, j = 0; 1390 SSL_CIPHER *c; 1391 unsigned char *q; 1392#ifndef OPENSSL_NO_KRB5 1393 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1394#endif /* OPENSSL_NO_KRB5 */ 1395 1396 if (sk == NULL) 1397 return (0); 1398 q = p; 1399 1400 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1401 c = sk_SSL_CIPHER_value(sk, i); 1402 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1403 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1404 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1405 continue; 1406#ifndef OPENSSL_NO_KRB5 1407 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1408 nokrb5) 1409 continue; 1410#endif /* OPENSSL_NO_KRB5 */ 1411#ifndef OPENSSL_NO_PSK 1412 /* with PSK there must be client callback set */ 1413 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1414 s->psk_client_callback == NULL) 1415 continue; 1416#endif /* OPENSSL_NO_PSK */ 1417 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1418 p += j; 1419 } 1420 /* If p == q, no ciphers and caller indicates an error. Otherwise 1421 * add SCSV if not renegotiating. 1422 */ 1423 if (p != q && !s->renegotiate) { 1424 static SSL_CIPHER scsv = { 1425 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1426 }; 1427 j = put_cb ? put_cb(&scsv, p) : ssl_put_cipher_by_char(s, &scsv, p); 1428 p += j; 1429#ifdef OPENSSL_RI_DEBUG 1430 fprintf(stderr, "SCSV sent by client\n"); 1431#endif 1432 } 1433 1434 return (p - q); 1435} 1436 1437STACK_OF(SSL_CIPHER) 1438*ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1439STACK_OF(SSL_CIPHER) **skp) 1440{ 1441 const SSL_CIPHER *c; 1442 STACK_OF(SSL_CIPHER) *sk; 1443 int i, n; 1444 if (s->s3) 1445 s->s3->send_connection_binding = 0; 1446 1447 n = ssl_put_cipher_by_char(s, NULL, NULL); 1448 if ((num % n) != 0) { 1449 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1450 return (NULL); 1451 } 1452 if ((skp == NULL) || (*skp == NULL)) 1453 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1454 else { 1455 sk= *skp; 1456 sk_SSL_CIPHER_zero(sk); 1457 } 1458 1459 for (i = 0; i < num; i += n) { 1460 /* Check for SCSV */ 1461 if (s->s3 && (n != 3 || !p[0]) && 1462 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1463 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1464 /* SCSV fatal if renegotiating */ 1465 if (s->renegotiate) { 1466 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1467 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1468 1469 goto err; 1470 } 1471 s->s3->send_connection_binding = 1; 1472 p += n; 1473#ifdef OPENSSL_RI_DEBUG 1474 fprintf(stderr, "SCSV received by server\n"); 1475#endif 1476 continue; 1477 } 1478 1479 c = ssl_get_cipher_by_char(s, p); 1480 p += n; 1481 if (c != NULL) { 1482 if (!sk_SSL_CIPHER_push(sk, c)) { 1483 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1484 goto err; 1485 } 1486 } 1487 } 1488 1489 if (skp != NULL) 1490 *skp = sk; 1491 return (sk); 1492err: 1493 if ((skp == NULL) || (*skp == NULL)) 1494 sk_SSL_CIPHER_free(sk); 1495 return (NULL); 1496} 1497 1498 1499#ifndef OPENSSL_NO_TLSEXT 1500/** return a servername extension value if provided in Client Hello, or NULL. 1501 * So far, only host_name types are defined (RFC 3546). 1502 */ 1503 1504const char 1505*SSL_get_servername(const SSL *s, const int type) 1506{ 1507 if (type != TLSEXT_NAMETYPE_host_name) 1508 return NULL; 1509 1510 return s->session && !s->tlsext_hostname ? 1511 s->session->tlsext_hostname : 1512 s->tlsext_hostname; 1513} 1514 1515int 1516SSL_get_servername_type(const SSL *s) 1517{ 1518 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1519 return TLSEXT_NAMETYPE_host_name; 1520 return -1; 1521} 1522 1523# ifndef OPENSSL_NO_NEXTPROTONEG 1524/* SSL_select_next_proto implements the standard protocol selection. It is 1525 * expected that this function is called from the callback set by 1526 * SSL_CTX_set_next_proto_select_cb. 1527 * 1528 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1529 * strings. The length byte itself is not included in the length. A byte 1530 * string of length 0 is invalid. No byte string may be truncated. 1531 * 1532 * The current, but experimental algorithm for selecting the protocol is: 1533 * 1534 * 1) If the server doesn't support NPN then this is indicated to the 1535 * callback. In this case, the client application has to abort the connection 1536 * or have a default application level protocol. 1537 * 1538 * 2) If the server supports NPN, but advertises an empty list then the 1539 * client selects the first protcol in its list, but indicates via the 1540 * API that this fallback case was enacted. 1541 * 1542 * 3) Otherwise, the client finds the first protocol in the server's list 1543 * that it supports and selects this protocol. This is because it's 1544 * assumed that the server has better information about which protocol 1545 * a client should use. 1546 * 1547 * 4) If the client doesn't support any of the server's advertised 1548 * protocols, then this is treated the same as case 2. 1549 * 1550 * It returns either 1551 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1552 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1553 */ 1554int 1555SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len) 1556{ 1557 unsigned int i, j; 1558 const unsigned char *result; 1559 int status = OPENSSL_NPN_UNSUPPORTED; 1560 1561 /* For each protocol in server preference order, see if we support it. */ 1562 for (i = 0; i < server_len; ) { 1563 for (j = 0; j < client_len; ) { 1564 if (server[i] == client[j] && 1565 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1566 /* We found a match */ 1567 result = &server[i]; 1568 status = OPENSSL_NPN_NEGOTIATED; 1569 goto found; 1570 } 1571 j += client[j]; 1572 j++; 1573 } 1574 i += server[i]; 1575 i++; 1576 } 1577 1578 /* There's no overlap between our protocols and the server's list. */ 1579 result = client; 1580 status = OPENSSL_NPN_NO_OVERLAP; 1581 1582 found: 1583 *out = (unsigned char *) result + 1; 1584 *outlen = result[0]; 1585 return status; 1586} 1587 1588/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1589 * requested protocol for this connection and returns 0. If the client didn't 1590 * request any protocol, then *data is set to NULL. 1591 * 1592 * Note that the client can request any protocol it chooses. The value returned 1593 * from this function need not be a member of the list of supported protocols 1594 * provided by the callback. 1595 */ 1596void 1597SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1598{ 1599 *data = s->next_proto_negotiated; 1600 if (!*data) { 1601 *len = 0; 1602 } else { 1603 *len = s->next_proto_negotiated_len; 1604 } 1605} 1606 1607/* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1608 * TLS server needs a list of supported protocols for Next Protocol 1609 * Negotiation. The returned list must be in wire format. The list is returned 1610 * by setting |out| to point to it and |outlen| to its length. This memory will 1611 * not be modified, but one should assume that the SSL* keeps a reference to 1612 * it. 1613 * 1614 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1615 * such extension will be included in the ServerHello. */ 1616void 1617SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1618{ 1619 ctx->next_protos_advertised_cb = cb; 1620 ctx->next_protos_advertised_cb_arg = arg; 1621} 1622 1623/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1624 * client needs to select a protocol from the server's provided list. |out| 1625 * must be set to point to the selected protocol (which may be within |in|). 1626 * The length of the protocol name must be written into |outlen|. The server's 1627 * advertised protocols are provided in |in| and |inlen|. The callback can 1628 * assume that |in| is syntactically valid. 1629 * 1630 * The client must select a protocol. It is fatal to the connection if this 1631 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1632 */ 1633void 1634SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1635{ 1636 ctx->next_proto_select_cb = cb; 1637 ctx->next_proto_select_cb_arg = arg; 1638} 1639# endif 1640#endif 1641 1642int 1643SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1644 const char *label, size_t llen, const unsigned char *p, size_t plen, 1645int use_context) 1646{ 1647 if (s->version < TLS1_VERSION) 1648 return -1; 1649 1650 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1651 llen, p, plen, 1652 use_context); 1653} 1654 1655static unsigned long 1656ssl_session_hash(const SSL_SESSION *a) 1657{ 1658 unsigned long l; 1659 1660 l = (unsigned long) 1661 ((unsigned int) a->session_id[0] )| 1662 ((unsigned int) a->session_id[1]<< 8L)| 1663 ((unsigned long)a->session_id[2]<<16L)| 1664 ((unsigned long)a->session_id[3]<<24L); 1665 return (l); 1666} 1667 1668/* NB: If this function (or indeed the hash function which uses a sort of 1669 * coarser function than this one) is changed, ensure 1670 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1671 * able to construct an SSL_SESSION that will collide with any existing session 1672 * with a matching session ID. */ 1673static int 1674ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1675{ 1676 if (a->ssl_version != b->ssl_version) 1677 return (1); 1678 if (a->session_id_length != b->session_id_length) 1679 return (1); 1680 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1681} 1682 1683/* These wrapper functions should remain rather than redeclaring 1684 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1685 * variable. The reason is that the functions aren't static, they're exposed via 1686 * ssl.h. */ 1687static 1688IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1689static 1690IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1691 1692SSL_CTX 1693*SSL_CTX_new(const SSL_METHOD *meth) 1694{ 1695 SSL_CTX *ret = NULL; 1696 1697 if (meth == NULL) { 1698 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1699 return (NULL); 1700 } 1701 1702 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1703 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1704 goto err; 1705 } 1706 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1707 if (ret == NULL) 1708 goto err; 1709 1710 memset(ret, 0, sizeof(SSL_CTX)); 1711 1712 ret->method = meth; 1713 1714 ret->cert_store = NULL; 1715 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1716 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1717 ret->session_cache_head = NULL; 1718 ret->session_cache_tail = NULL; 1719 1720 /* We take the system default */ 1721 ret->session_timeout = meth->get_timeout(); 1722 1723 ret->new_session_cb = 0; 1724 ret->remove_session_cb = 0; 1725 ret->get_session_cb = 0; 1726 ret->generate_session_id = 0; 1727 1728 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1729 1730 ret->references = 1; 1731 ret->quiet_shutdown = 0; 1732 1733/* ret->cipher=NULL;*/ 1734/* ret->s2->challenge=NULL; 1735 ret->master_key=NULL; 1736 ret->key_arg=NULL; 1737 ret->s2->conn_id=NULL; 1738*/ 1739 1740 ret->info_callback = NULL; 1741 1742 ret->app_verify_callback = 0; 1743 ret->app_verify_arg = NULL; 1744 1745 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1746 ret->read_ahead = 0; 1747 ret->msg_callback = 0; 1748 ret->msg_callback_arg = NULL; 1749 ret->verify_mode = SSL_VERIFY_NONE; 1750#if 0 1751 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1752#endif 1753 ret->sid_ctx_length = 0; 1754 ret->default_verify_callback = NULL; 1755 if ((ret->cert = ssl_cert_new()) == NULL) 1756 goto err; 1757 1758 ret->default_passwd_callback = 0; 1759 ret->default_passwd_callback_userdata = NULL; 1760 ret->client_cert_cb = 0; 1761 ret->app_gen_cookie_cb = 0; 1762 ret->app_verify_cookie_cb = 0; 1763 1764 ret->sessions = lh_SSL_SESSION_new(); 1765 if (ret->sessions == NULL) 1766 goto err; 1767 ret->cert_store = X509_STORE_new(); 1768 if (ret->cert_store == NULL) 1769 goto err; 1770 1771 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1772 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1773 if (ret->cipher_list == NULL || 1774 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1775 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1776 goto err2; 1777 } 1778 1779 ret->param = X509_VERIFY_PARAM_new(); 1780 if (!ret->param) 1781 goto err; 1782 1783 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1784 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1785 goto err2; 1786 } 1787 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1788 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1789 goto err2; 1790 } 1791 1792 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1793 goto err; 1794 1795 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1796 1797 ret->extra_certs = NULL; 1798 /* No compression for DTLS */ 1799 if (meth->version != DTLS1_VERSION) 1800 ret->comp_methods = SSL_COMP_get_compression_methods(); 1801 1802 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1803 1804#ifndef OPENSSL_NO_TLSEXT 1805 ret->tlsext_servername_callback = 0; 1806 ret->tlsext_servername_arg = NULL; 1807 /* Setup RFC4507 ticket keys */ 1808 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1809 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1810 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1811 ret->options |= SSL_OP_NO_TICKET; 1812 1813 ret->tlsext_status_cb = 0; 1814 ret->tlsext_status_arg = NULL; 1815 1816# ifndef OPENSSL_NO_NEXTPROTONEG 1817 ret->next_protos_advertised_cb = 0; 1818 ret->next_proto_select_cb = 0; 1819# endif 1820#endif 1821#ifndef OPENSSL_NO_PSK 1822 ret->psk_identity_hint = NULL; 1823 ret->psk_client_callback = NULL; 1824 ret->psk_server_callback = NULL; 1825#endif 1826#ifndef OPENSSL_NO_BUF_FREELISTS 1827 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1828 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1829 if (!ret->rbuf_freelist) 1830 goto err; 1831 ret->rbuf_freelist->chunklen = 0; 1832 ret->rbuf_freelist->len = 0; 1833 ret->rbuf_freelist->head = NULL; 1834 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1835 if (!ret->wbuf_freelist) { 1836 OPENSSL_free(ret->rbuf_freelist); 1837 goto err; 1838 } 1839 ret->wbuf_freelist->chunklen = 0; 1840 ret->wbuf_freelist->len = 0; 1841 ret->wbuf_freelist->head = NULL; 1842#endif 1843#ifndef OPENSSL_NO_ENGINE 1844 ret->client_cert_engine = NULL; 1845#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1846#define eng_strx(x) #x 1847#define eng_str(x) eng_strx(x) 1848 /* Use specific client engine automatically... ignore errors */ 1849 { 1850 ENGINE *eng; 1851 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1852 if (!eng) { 1853 ERR_clear_error(); 1854 ENGINE_load_builtin_engines(); 1855 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1856 } 1857 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1858 ERR_clear_error(); 1859 } 1860#endif 1861#endif 1862 /* Default is to connect to non-RI servers. When RI is more widely 1863 * deployed might change this. 1864 */ 1865 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1866 1867 return (ret); 1868err: 1869 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1870err2: 1871 if (ret != NULL) 1872 SSL_CTX_free(ret); 1873 return (NULL); 1874} 1875 1876#if 0 1877static void 1878SSL_COMP_free(SSL_COMP *comp) 1879 { OPENSSL_free(comp); 1880} 1881#endif 1882 1883#ifndef OPENSSL_NO_BUF_FREELISTS 1884static void 1885ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1886{ 1887 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1888 for (ent = list->head; ent; ent = next) { 1889 next = ent->next; 1890 OPENSSL_free(ent); 1891 } 1892 OPENSSL_free(list); 1893} 1894#endif 1895 1896void 1897SSL_CTX_free(SSL_CTX *a) 1898{ 1899 int i; 1900 1901 if (a == NULL) 1902 return; 1903 1904 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1905#ifdef REF_PRINT 1906 REF_PRINT("SSL_CTX", a); 1907#endif 1908 if (i > 0) 1909 return; 1910#ifdef REF_CHECK 1911 if (i < 0) { 1912 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 1913 abort(); /* ok */ 1914 } 1915#endif 1916 1917 if (a->param) 1918 X509_VERIFY_PARAM_free(a->param); 1919 1920 /* 1921 * Free internal session cache. However: the remove_cb() may reference 1922 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1923 * after the sessions were flushed. 1924 * As the ex_data handling routines might also touch the session cache, 1925 * the most secure solution seems to be: empty (flush) the cache, then 1926 * free ex_data, then finally free the cache. 1927 * (See ticket [openssl.org #212].) 1928 */ 1929 if (a->sessions != NULL) 1930 SSL_CTX_flush_sessions(a, 0); 1931 1932 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1933 1934 if (a->sessions != NULL) 1935 lh_SSL_SESSION_free(a->sessions); 1936 1937 if (a->cert_store != NULL) 1938 X509_STORE_free(a->cert_store); 1939 if (a->cipher_list != NULL) 1940 sk_SSL_CIPHER_free(a->cipher_list); 1941 if (a->cipher_list_by_id != NULL) 1942 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1943 if (a->cert != NULL) 1944 ssl_cert_free(a->cert); 1945 if (a->client_CA != NULL) 1946 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1947 if (a->extra_certs != NULL) 1948 sk_X509_pop_free(a->extra_certs, X509_free); 1949#if 0 /* This should never be done, since it removes a global database */ 1950 if (a->comp_methods != NULL) 1951 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1952#else 1953 a->comp_methods = NULL; 1954#endif 1955 1956#ifndef OPENSSL_NO_SRTP 1957 if (a->srtp_profiles) 1958 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1959#endif 1960 1961#ifndef OPENSSL_NO_PSK 1962 if (a->psk_identity_hint) 1963 OPENSSL_free(a->psk_identity_hint); 1964#endif 1965#ifndef OPENSSL_NO_ENGINE 1966 if (a->client_cert_engine) 1967 ENGINE_finish(a->client_cert_engine); 1968#endif 1969 1970#ifndef OPENSSL_NO_BUF_FREELISTS 1971 if (a->wbuf_freelist) 1972 ssl_buf_freelist_free(a->wbuf_freelist); 1973 if (a->rbuf_freelist) 1974 ssl_buf_freelist_free(a->rbuf_freelist); 1975#endif 1976 1977 OPENSSL_free(a); 1978} 1979 1980void 1981SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1982{ 1983 ctx->default_passwd_callback = cb; 1984} 1985 1986void 1987SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1988{ 1989 ctx->default_passwd_callback_userdata = u; 1990} 1991 1992void 1993SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, void *), void *arg) 1994{ 1995 ctx->app_verify_callback = cb; 1996 ctx->app_verify_arg = arg; 1997} 1998 1999void 2000SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2001{ 2002 ctx->verify_mode = mode; 2003 ctx->default_verify_callback = cb; 2004} 2005 2006void 2007SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2008{ 2009 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2010} 2011 2012void 2013ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2014{ 2015 CERT_PKEY *cpk; 2016 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2017 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2018 int rsa_tmp_export, dh_tmp_export, kl; 2019 unsigned long mask_k, mask_a, emask_k, emask_a; 2020 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2021#ifndef OPENSSL_NO_ECDH 2022 int have_ecdh_tmp; 2023#endif 2024 X509 *x = NULL; 2025 EVP_PKEY *ecc_pkey = NULL; 2026 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2027 2028 if (c == NULL) 2029 return; 2030 2031 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2032 2033#ifndef OPENSSL_NO_RSA 2034 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2035 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2036 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2037#else 2038 rsa_tmp = rsa_tmp_export = 0; 2039#endif 2040#ifndef OPENSSL_NO_DH 2041 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2042 dh_tmp_export = (c->dh_tmp_cb != NULL || 2043 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2044#else 2045 dh_tmp = dh_tmp_export = 0; 2046#endif 2047 2048#ifndef OPENSSL_NO_ECDH 2049 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2050#endif 2051 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2052 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2053 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2054 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2055 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2056 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2057 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2058 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2059 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2061 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2062/* FIX THIS EAY EAY EAY */ 2063 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2064 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2065 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2066 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2067 mask_k = 0; 2068 mask_a = 0; 2069 emask_k = 0; 2070 emask_a = 0; 2071 2072 2073 2074#ifdef CIPHER_DEBUG 2075 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2076 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, 2077 rsa_enc, rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2078#endif 2079 2080 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2081 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2082 mask_k |= SSL_kGOST; 2083 mask_a |= SSL_aGOST01; 2084 } 2085 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2086 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2087 mask_k |= SSL_kGOST; 2088 mask_a |= SSL_aGOST94; 2089 } 2090 2091 if (rsa_enc || (rsa_tmp && rsa_sign)) 2092 mask_k|=SSL_kRSA; 2093 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2094 emask_k|=SSL_kRSA; 2095 2096#if 0 2097 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2098 if ((dh_tmp || dh_rsa || dh_dsa) && 2099 (rsa_enc || rsa_sign || dsa_sign)) 2100 mask_k|=SSL_kEDH; 2101 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2102 (rsa_enc || rsa_sign || dsa_sign)) 2103 emask_k|=SSL_kEDH; 2104#endif 2105 2106 if (dh_tmp_export) 2107 emask_k|=SSL_kEDH; 2108 2109 if (dh_tmp) 2110 mask_k|=SSL_kEDH; 2111 2112 if (dh_rsa) 2113 mask_k|=SSL_kDHr; 2114 if (dh_rsa_export) 2115 emask_k|=SSL_kDHr; 2116 2117 if (dh_dsa) 2118 mask_k|=SSL_kDHd; 2119 if (dh_dsa_export) 2120 emask_k|=SSL_kDHd; 2121 2122 if (rsa_enc || rsa_sign) { 2123 mask_a|=SSL_aRSA; 2124 emask_a|=SSL_aRSA; 2125 } 2126 2127 if (dsa_sign) { 2128 mask_a|=SSL_aDSS; 2129 emask_a|=SSL_aDSS; 2130 } 2131 2132 mask_a|=SSL_aNULL; 2133 emask_a|=SSL_aNULL; 2134 2135#ifndef OPENSSL_NO_KRB5 2136 mask_k|=SSL_kKRB5; 2137 mask_a|=SSL_aKRB5; 2138 emask_k|=SSL_kKRB5; 2139 emask_a|=SSL_aKRB5; 2140#endif 2141 2142 /* An ECC certificate may be usable for ECDH and/or 2143 * ECDSA cipher suites depending on the key usage extension. 2144 */ 2145 if (have_ecc_cert) { 2146 /* This call populates extension flags (ex_flags) */ 2147 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2148 X509_check_purpose(x, -1, 0); 2149 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2150 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2151 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2152 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2153 ecc_pkey = X509_get_pubkey(x); 2154 ecc_pkey_size = (ecc_pkey != NULL) ? 2155 EVP_PKEY_bits(ecc_pkey) : 0; 2156 EVP_PKEY_free(ecc_pkey); 2157 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2158 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2159 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2160 } 2161#ifndef OPENSSL_NO_ECDH 2162 if (ecdh_ok) { 2163 2164 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2165 mask_k|=SSL_kECDHr; 2166 mask_a|=SSL_aECDH; 2167 if (ecc_pkey_size <= 163) { 2168 emask_k|=SSL_kECDHr; 2169 emask_a|=SSL_aECDH; 2170 } 2171 } 2172 2173 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2174 mask_k|=SSL_kECDHe; 2175 mask_a|=SSL_aECDH; 2176 if (ecc_pkey_size <= 163) { 2177 emask_k|=SSL_kECDHe; 2178 emask_a|=SSL_aECDH; 2179 } 2180 } 2181 } 2182#endif 2183#ifndef OPENSSL_NO_ECDSA 2184 if (ecdsa_ok) { 2185 mask_a|=SSL_aECDSA; 2186 emask_a|=SSL_aECDSA; 2187 } 2188#endif 2189 } 2190 2191#ifndef OPENSSL_NO_ECDH 2192 if (have_ecdh_tmp) { 2193 mask_k|=SSL_kEECDH; 2194 emask_k|=SSL_kEECDH; 2195 } 2196#endif 2197 2198#ifndef OPENSSL_NO_PSK 2199 mask_k |= SSL_kPSK; 2200 mask_a |= SSL_aPSK; 2201 emask_k |= SSL_kPSK; 2202 emask_a |= SSL_aPSK; 2203#endif 2204 2205 c->mask_k = mask_k; 2206 c->mask_a = mask_a; 2207 c->export_mask_k = emask_k; 2208 c->export_mask_a = emask_a; 2209 c->valid = 1; 2210} 2211 2212/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2213#define ku_reject(x, usage) \ 2214 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2215 2216#ifndef OPENSSL_NO_EC 2217 2218int 2219ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2220{ 2221 unsigned long alg_k, alg_a; 2222 EVP_PKEY *pkey = NULL; 2223 int keysize = 0; 2224 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2225 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2226 2227 alg_k = cs->algorithm_mkey; 2228 alg_a = cs->algorithm_auth; 2229 2230 if (SSL_C_IS_EXPORT(cs)) { 2231 /* ECDH key length in export ciphers must be <= 163 bits */ 2232 pkey = X509_get_pubkey(x); 2233 if (pkey == NULL) 2234 return 0; 2235 keysize = EVP_PKEY_bits(pkey); 2236 EVP_PKEY_free(pkey); 2237 if (keysize > 163) 2238 return 0; 2239 } 2240 2241 /* This call populates the ex_flags field correctly */ 2242 X509_check_purpose(x, -1, 0); 2243 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2244 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2245 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2246 } 2247 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2248 /* key usage, if present, must allow key agreement */ 2249 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2250 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2251 return 0; 2252 } 2253 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2254 /* signature alg must be ECDSA */ 2255 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2256 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2257 return 0; 2258 } 2259 } 2260 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2261 /* signature alg must be RSA */ 2262 2263 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2264 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2265 return 0; 2266 } 2267 } 2268 } 2269 if (alg_a & SSL_aECDSA) { 2270 /* key usage, if present, must allow signing */ 2271 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2272 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2273 return 0; 2274 } 2275 } 2276 2277 return 1; 2278 /* all checks are ok */ 2279} 2280 2281#endif 2282 2283/* THIS NEEDS CLEANING UP */ 2284CERT_PKEY 2285*ssl_get_server_send_pkey(const SSL *s) 2286{ 2287 unsigned long alg_k, alg_a; 2288 CERT *c; 2289 int i; 2290 2291 c = s->cert; 2292 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2293 2294 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2295 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2296 2297 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2298 /* we don't need to look at SSL_kEECDH 2299 * since no certificate is needed for 2300 * anon ECDH and for authenticated 2301 * EECDH, the check for the auth 2302 * algorithm will set i correctly 2303 * NOTE: For ECDH-RSA, we need an ECC 2304 * not an RSA cert but for EECDH-RSA 2305 * we need an RSA cert. Placing the 2306 * checks for SSL_kECDH before RSA 2307 * checks ensures the correct cert is chosen. 2308 */ 2309 i = SSL_PKEY_ECC; 2310 } else if (alg_a & SSL_aECDSA) { 2311 i = SSL_PKEY_ECC; 2312 } else if (alg_k & SSL_kDHr) 2313 i = SSL_PKEY_DH_RSA; 2314 else if (alg_k & SSL_kDHd) 2315 i = SSL_PKEY_DH_DSA; 2316 else if (alg_a & SSL_aDSS) 2317 i = SSL_PKEY_DSA_SIGN; 2318 else if (alg_a & SSL_aRSA) { 2319 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2320 i = SSL_PKEY_RSA_SIGN; 2321 else 2322 i = SSL_PKEY_RSA_ENC; 2323 } else if (alg_a & SSL_aKRB5) { 2324 /* VRS something else here? */ 2325 return (NULL); 2326 } else if (alg_a & SSL_aGOST94) 2327 i = SSL_PKEY_GOST94; 2328 else if (alg_a & SSL_aGOST01) 2329 i = SSL_PKEY_GOST01; 2330 else /* if (alg_a & SSL_aNULL) */ 2331 { 2332 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2333 return (NULL); 2334 } 2335 2336 return c->pkeys + i; 2337} 2338 2339X509 2340*ssl_get_server_send_cert(const SSL *s) 2341{ 2342 CERT_PKEY *cpk; 2343 cpk = ssl_get_server_send_pkey(s); 2344 if (!cpk) 2345 return NULL; 2346 return cpk->x509; 2347} 2348 2349EVP_PKEY 2350*ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2351{ 2352 unsigned long alg_a; 2353 CERT *c; 2354 int idx = -1; 2355 2356 alg_a = cipher->algorithm_auth; 2357 c = s->cert; 2358 2359 if ((alg_a & SSL_aDSS) && 2360 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2361 idx = SSL_PKEY_DSA_SIGN; 2362 else if (alg_a & SSL_aRSA) { 2363 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2364 idx = SSL_PKEY_RSA_SIGN; 2365 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2366 idx = SSL_PKEY_RSA_ENC; 2367 } else if ((alg_a & SSL_aECDSA) && 2368 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2369 idx = SSL_PKEY_ECC; 2370 if (idx == -1) { 2371 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2372 return (NULL); 2373 } 2374 if (pmd) 2375 *pmd = c->pkeys[idx].digest; 2376 return c->pkeys[idx].privatekey; 2377} 2378 2379void 2380ssl_update_cache(SSL *s, int mode) 2381{ 2382 int i; 2383 2384 /* If the session_id_length is 0, we are not supposed to cache it, 2385 * and it would be rather hard to do anyway :-) */ 2386 if (s->session->session_id_length == 0) 2387 return; 2388 2389 i = s->session_ctx->session_cache_mode; 2390 if ((i & mode) && (!s->hit) 2391 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2392 || SSL_CTX_add_session(s->session_ctx, s->session)) 2393 && (s->session_ctx->new_session_cb != NULL)) { 2394 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2395 if (!s->session_ctx->new_session_cb(s, s->session)) 2396 SSL_SESSION_free(s->session); 2397 } 2398 2399 /* auto flush every 255 connections */ 2400 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2401 ((i & mode) == mode)) { 2402 if ((((mode & SSL_SESS_CACHE_CLIENT) 2403 ?s->session_ctx->stats.sess_connect_good 2404 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2405 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2406 } 2407 } 2408} 2409 2410const SSL_METHOD 2411*SSL_get_ssl_method(SSL *s) 2412{ 2413 return (s->method); 2414} 2415 2416int 2417SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2418{ 2419 int conn = -1; 2420 int ret = 1; 2421 2422 if (s->method != meth) { 2423 if (s->handshake_func != NULL) 2424 conn = (s->handshake_func == s->method->ssl_connect); 2425 2426 if (s->method->version == meth->version) 2427 s->method = meth; 2428 else { 2429 s->method->ssl_free(s); 2430 s->method = meth; 2431 ret = s->method->ssl_new(s); 2432 } 2433 2434 if (conn == 1) 2435 s->handshake_func = meth->ssl_connect; 2436 else if (conn == 0) 2437 s->handshake_func = meth->ssl_accept; 2438 } 2439 return (ret); 2440} 2441 2442int 2443SSL_get_error(const SSL *s, int i) 2444{ 2445 int reason; 2446 unsigned long l; 2447 BIO *bio; 2448 2449 if (i > 0) 2450 return (SSL_ERROR_NONE); 2451 2452 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2453 * etc, where we do encode the error */ 2454 if ((l = ERR_peek_error()) != 0) { 2455 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2456 return (SSL_ERROR_SYSCALL); 2457 else 2458 return (SSL_ERROR_SSL); 2459 } 2460 2461 if ((i < 0) && SSL_want_read(s)) { 2462 bio = SSL_get_rbio(s); 2463 if (BIO_should_read(bio)) 2464 return (SSL_ERROR_WANT_READ); 2465 else if (BIO_should_write(bio)) 2466 /* 2467 * This one doesn't make too much sense... We never 2468 * try to write to the rbio, and an application 2469 * program where rbio and wbio are separate couldn't 2470 * even know what it should wait for. However if we 2471 * ever set s->rwstate incorrectly (so that we have 2472 * SSL_want_read(s) instead of SSL_want_write(s)) 2473 * and rbio and wbio *are* the same, this test works 2474 * around that bug; so it might be safer to keep it. 2475 */ 2476 return (SSL_ERROR_WANT_WRITE); 2477 else if (BIO_should_io_special(bio)) { 2478 reason = BIO_get_retry_reason(bio); 2479 if (reason == BIO_RR_CONNECT) 2480 return (SSL_ERROR_WANT_CONNECT); 2481 else if (reason == BIO_RR_ACCEPT) 2482 return (SSL_ERROR_WANT_ACCEPT); 2483 else 2484 return(SSL_ERROR_SYSCALL); /* unknown */ 2485 } 2486 } 2487 2488 if ((i < 0) && SSL_want_write(s)) { 2489 bio = SSL_get_wbio(s); 2490 if (BIO_should_write(bio)) 2491 return (SSL_ERROR_WANT_WRITE); 2492 else if (BIO_should_read(bio)) 2493 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2494 return (SSL_ERROR_WANT_READ); 2495 else if (BIO_should_io_special(bio)) { 2496 reason = BIO_get_retry_reason(bio); 2497 if (reason == BIO_RR_CONNECT) 2498 return (SSL_ERROR_WANT_CONNECT); 2499 else if (reason == BIO_RR_ACCEPT) 2500 return (SSL_ERROR_WANT_ACCEPT); 2501 else 2502 return (SSL_ERROR_SYSCALL); 2503 } 2504 } 2505 if ((i < 0) && SSL_want_x509_lookup(s)) { 2506 return (SSL_ERROR_WANT_X509_LOOKUP); 2507 } 2508 2509 if (i == 0) { 2510 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2511 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2512 return (SSL_ERROR_ZERO_RETURN); 2513 } 2514 return (SSL_ERROR_SYSCALL); 2515} 2516 2517int 2518SSL_do_handshake(SSL *s) 2519{ 2520 int ret = 1; 2521 2522 if (s->handshake_func == NULL) { 2523 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2524 return (-1); 2525 } 2526 2527 s->method->ssl_renegotiate_check(s); 2528 2529 if (SSL_in_init(s) || SSL_in_before(s)) { 2530 ret = s->handshake_func(s); 2531 } 2532 return (ret); 2533} 2534 2535/* For the next 2 functions, SSL_clear() sets shutdown and so 2536 * one of these calls will reset it */ 2537void 2538SSL_set_accept_state(SSL *s) 2539{ 2540 s->server = 1; 2541 s->shutdown = 0; 2542 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2543 s->handshake_func = s->method->ssl_accept; 2544 /* clear the current cipher */ 2545 ssl_clear_cipher_ctx(s); 2546 ssl_clear_hash_ctx(&s->read_hash); 2547 ssl_clear_hash_ctx(&s->write_hash); 2548} 2549 2550void 2551SSL_set_connect_state(SSL *s) 2552{ 2553 s->server = 0; 2554 s->shutdown = 0; 2555 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2556 s->handshake_func = s->method->ssl_connect; 2557 /* clear the current cipher */ 2558 ssl_clear_cipher_ctx(s); 2559 ssl_clear_hash_ctx(&s->read_hash); 2560 ssl_clear_hash_ctx(&s->write_hash); 2561} 2562 2563int 2564ssl_undefined_function(SSL *s) 2565{ 2566 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2567 return (0); 2568} 2569 2570int 2571ssl_undefined_void_function(void) 2572{ 2573 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2574 return (0); 2575} 2576 2577int 2578ssl_undefined_const_function(const SSL *s) 2579{ 2580 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2581 return (0); 2582} 2583 2584SSL_METHOD * 2585ssl_bad_method(int ver) 2586{ 2587 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2588 return (NULL); 2589} 2590 2591const char * 2592SSL_get_version(const SSL *s) 2593{ 2594 if (s->version == TLS1_2_VERSION) 2595 return("TLSv1.2"); 2596 else if (s->version == TLS1_1_VERSION) 2597 return("TLSv1.1"); 2598 else if (s->version == TLS1_VERSION) 2599 return("TLSv1"); 2600 else if (s->version == SSL3_VERSION) 2601 return("SSLv3"); 2602 else 2603 return("unknown"); 2604} 2605 2606SSL * 2607SSL_dup(SSL *s) 2608{ 2609 STACK_OF(X509_NAME) *sk; 2610 X509_NAME *xn; 2611 SSL *ret; 2612 int i; 2613 2614 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2615 return (NULL); 2616 2617 ret->version = s->version; 2618 ret->type = s->type; 2619 ret->method = s->method; 2620 2621 if (s->session != NULL) { 2622 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2623 SSL_copy_session_id(ret, s); 2624 } else { 2625 /* No session has been established yet, so we have to expect 2626 * that s->cert or ret->cert will be changed later -- 2627 * they should not both point to the same object, 2628 * and thus we can't use SSL_copy_session_id. */ 2629 2630 ret->method->ssl_free(ret); 2631 ret->method = s->method; 2632 ret->method->ssl_new(ret); 2633 2634 if (s->cert != NULL) { 2635 if (ret->cert != NULL) { 2636 ssl_cert_free(ret->cert); 2637 } 2638 ret->cert = ssl_cert_dup(s->cert); 2639 if (ret->cert == NULL) 2640 goto err; 2641 } 2642 2643 SSL_set_session_id_context(ret, 2644 s->sid_ctx, s->sid_ctx_length); 2645 } 2646 2647 ret->options = s->options; 2648 ret->mode = s->mode; 2649 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2650 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2651 ret->msg_callback = s->msg_callback; 2652 ret->msg_callback_arg = s->msg_callback_arg; 2653 SSL_set_verify(ret, SSL_get_verify_mode(s), 2654 SSL_get_verify_callback(s)); 2655 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2656 ret->generate_session_id = s->generate_session_id; 2657 2658 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2659 2660 ret->debug = s->debug; 2661 2662 /* copy app data, a little dangerous perhaps */ 2663 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2664 goto err; 2665 2666 /* setup rbio, and wbio */ 2667 if (s->rbio != NULL) { 2668 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2669 goto err; 2670 } 2671 if (s->wbio != NULL) { 2672 if (s->wbio != s->rbio) { 2673 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2674 goto err; 2675 } else 2676 ret->wbio = ret->rbio; 2677 } 2678 ret->rwstate = s->rwstate; 2679 ret->in_handshake = s->in_handshake; 2680 ret->handshake_func = s->handshake_func; 2681 ret->server = s->server; 2682 ret->renegotiate = s->renegotiate; 2683 ret->new_session = s->new_session; 2684 ret->quiet_shutdown = s->quiet_shutdown; 2685 ret->shutdown = s->shutdown; 2686 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2687 ret->rstate = s->rstate; 2688 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2689 ret->hit = s->hit; 2690 2691 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2692 2693 /* dup the cipher_list and cipher_list_by_id stacks */ 2694 if (s->cipher_list != NULL) { 2695 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2696 goto err; 2697 } 2698 if (s->cipher_list_by_id != NULL) 2699 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2700 == NULL) 2701 goto err; 2702 2703 /* Dup the client_CA list */ 2704 if (s->client_CA != NULL) { 2705 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2706 ret->client_CA = sk; 2707 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2708 xn = sk_X509_NAME_value(sk, i); 2709 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2710 X509_NAME_free(xn); 2711 goto err; 2712 } 2713 } 2714 } 2715 2716 if (0) { 2717err: 2718 if (ret != NULL) 2719 SSL_free(ret); 2720 ret = NULL; 2721 } 2722 return (ret); 2723} 2724 2725void 2726ssl_clear_cipher_ctx(SSL *s) 2727{ 2728 if (s->enc_read_ctx != NULL) { 2729 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2730 OPENSSL_free(s->enc_read_ctx); 2731 s->enc_read_ctx = NULL; 2732 } 2733 if (s->enc_write_ctx != NULL) { 2734 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2735 OPENSSL_free(s->enc_write_ctx); 2736 s->enc_write_ctx = NULL; 2737 } 2738#ifndef OPENSSL_NO_COMP 2739 if (s->expand != NULL) { 2740 COMP_CTX_free(s->expand); 2741 s->expand = NULL; 2742 } 2743 if (s->compress != NULL) { 2744 COMP_CTX_free(s->compress); 2745 s->compress = NULL; 2746 } 2747#endif 2748} 2749 2750/* Fix this function so that it takes an optional type parameter */ 2751X509 2752*SSL_get_certificate(const SSL *s) 2753{ 2754 if (s->cert != NULL) 2755 return (s->cert->key->x509); 2756 else 2757 return (NULL); 2758} 2759 2760/* Fix this function so that it takes an optional type parameter */ 2761EVP_PKEY 2762*SSL_get_privatekey(SSL *s) 2763{ 2764 if (s->cert != NULL) 2765 return (s->cert->key->privatekey); 2766 else 2767 return (NULL); 2768} 2769 2770const SSL_CIPHER 2771*SSL_get_current_cipher(const SSL *s) 2772{ 2773 if ((s->session != NULL) && (s->session->cipher != NULL)) 2774 return (s->session->cipher); 2775 return (NULL); 2776} 2777#ifdef OPENSSL_NO_COMP 2778const void 2779*SSL_get_current_compression(SSL *s) 2780{ 2781 return NULL; 2782} 2783 2784const void 2785*SSL_get_current_expansion(SSL *s) 2786{ 2787 return NULL; 2788} 2789#else 2790 2791const COMP_METHOD 2792*SSL_get_current_compression(SSL *s) 2793{ 2794 if (s->compress != NULL) 2795 return (s->compress->meth); 2796 return (NULL); 2797} 2798 2799const COMP_METHOD 2800*SSL_get_current_expansion(SSL *s) 2801{ 2802 if (s->expand != NULL) 2803 return (s->expand->meth); 2804 return (NULL); 2805} 2806#endif 2807 2808int 2809ssl_init_wbio_buffer(SSL *s, int push) 2810{ 2811 BIO *bbio; 2812 2813 if (s->bbio == NULL) { 2814 bbio = BIO_new(BIO_f_buffer()); 2815 if (bbio == NULL) 2816 return (0); 2817 s->bbio = bbio; 2818 } else { 2819 bbio = s->bbio; 2820 if (s->bbio == s->wbio) 2821 s->wbio = BIO_pop(s->wbio); 2822 } 2823 (void)BIO_reset(bbio); 2824/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2825 if (!BIO_set_read_buffer_size(bbio, 1)) { 2826 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2827 return (0); 2828 } 2829 if (push) { 2830 if (s->wbio != bbio) 2831 s->wbio = BIO_push(bbio, s->wbio); 2832 } else { 2833 if (s->wbio == bbio) 2834 s->wbio = BIO_pop(bbio); 2835 } 2836 return (1); 2837} 2838 2839void 2840ssl_free_wbio_buffer(SSL *s) 2841{ 2842 if (s->bbio == NULL) 2843 return; 2844 2845 if (s->bbio == s->wbio) { 2846 /* remove buffering */ 2847 s->wbio = BIO_pop(s->wbio); 2848#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2849 assert(s->wbio != NULL); 2850#endif 2851 } 2852 BIO_free(s->bbio); 2853 s->bbio = NULL; 2854} 2855 2856void 2857SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2858{ 2859 ctx->quiet_shutdown = mode; 2860} 2861 2862int 2863SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2864{ 2865 return (ctx->quiet_shutdown); 2866} 2867 2868void 2869SSL_set_quiet_shutdown(SSL *s, int mode) 2870{ 2871 s->quiet_shutdown = mode; 2872} 2873 2874int 2875SSL_get_quiet_shutdown(const SSL *s) 2876{ 2877 return (s->quiet_shutdown); 2878} 2879 2880void 2881SSL_set_shutdown(SSL *s, int mode) 2882{ 2883 s->shutdown = mode; 2884} 2885 2886int 2887SSL_get_shutdown(const SSL *s) 2888{ 2889 return (s->shutdown); 2890} 2891 2892int 2893SSL_version(const SSL *s) 2894{ 2895 return (s->version); 2896} 2897 2898SSL_CTX 2899*SSL_get_SSL_CTX(const SSL *ssl) 2900{ 2901 return (ssl->ctx); 2902} 2903 2904SSL_CTX 2905*SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2906{ 2907 if (ssl->ctx == ctx) 2908 return ssl->ctx; 2909#ifndef OPENSSL_NO_TLSEXT 2910 if (ctx == NULL) 2911 ctx = ssl->initial_ctx; 2912#endif 2913 if (ssl->cert != NULL) 2914 ssl_cert_free(ssl->cert); 2915 ssl->cert = ssl_cert_dup(ctx->cert); 2916 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2917 if (ssl->ctx != NULL) 2918 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2919 ssl->ctx = ctx; 2920 return (ssl->ctx); 2921} 2922 2923#ifndef OPENSSL_NO_STDIO 2924int 2925SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2926{ 2927 return (X509_STORE_set_default_paths(ctx->cert_store)); 2928} 2929 2930int 2931SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2932 const char *CApath) 2933{ 2934 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2935} 2936#endif 2937 2938void 2939SSL_set_info_callback(SSL *ssl, 2940 void (*cb)(const SSL *ssl, int type, int val)) 2941{ 2942 ssl->info_callback = cb; 2943} 2944 2945/* One compiler (Diab DCC) doesn't like argument names in returned 2946 function pointer. */ 2947void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2948{ 2949 return ssl->info_callback; 2950} 2951 2952int 2953SSL_state(const SSL *ssl) 2954{ 2955 return (ssl->state); 2956} 2957 2958void 2959SSL_set_state(SSL *ssl, int state) 2960{ 2961 ssl->state = state; 2962} 2963 2964void 2965SSL_set_verify_result(SSL *ssl, long arg) 2966{ 2967 ssl->verify_result = arg; 2968} 2969 2970long 2971SSL_get_verify_result(const SSL *ssl) 2972{ 2973 return (ssl->verify_result); 2974} 2975 2976int 2977SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2978 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2979{ 2980 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2981 new_func, dup_func, free_func); 2982} 2983 2984int 2985SSL_set_ex_data(SSL *s, int idx, void *arg) 2986{ 2987 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2988} 2989 2990void 2991*SSL_get_ex_data(const SSL *s, int idx) 2992{ 2993 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2994} 2995 2996int 2997SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2998 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2999{ 3000 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3001 new_func, dup_func, free_func); 3002} 3003 3004int 3005SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3006{ 3007 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3008} 3009 3010void 3011*SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3012{ 3013 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3014} 3015 3016int 3017ssl_ok(SSL *s) 3018{ 3019 return (1); 3020} 3021 3022X509_STORE 3023*SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3024{ 3025 return (ctx->cert_store); 3026} 3027 3028void 3029SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3030{ 3031 if (ctx->cert_store != NULL) 3032 X509_STORE_free(ctx->cert_store); 3033 ctx->cert_store = store; 3034} 3035 3036int 3037SSL_want(const SSL *s) 3038{ 3039 return (s->rwstate); 3040} 3041 3042/*! 3043 * \brief Set the callback for generating temporary RSA keys. 3044 * \param ctx the SSL context. 3045 * \param cb the callback 3046 */ 3047 3048#ifndef OPENSSL_NO_RSA 3049void 3050SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 3051 int is_export, 3052int keylength)) 3053{ 3054 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3055} 3056 3057void 3058SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 3059 int is_export, 3060int keylength)) 3061{ 3062 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3063} 3064#endif 3065 3066#ifdef DOXYGEN 3067/*! 3068 * \brief The RSA temporary key callback function. 3069 * \param ssl the SSL session. 3070 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3071 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3072 * of the required key in bits. 3073 * \return the temporary RSA key. 3074 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3075 */ 3076 3077RSA 3078*cb(SSL *ssl, int is_export, int keylength) 3079{} 3080#endif 3081 3082/*! 3083 * \brief Set the callback for generating temporary DH keys. 3084 * \param ctx the SSL context. 3085 * \param dh the callback 3086 */ 3087 3088#ifndef OPENSSL_NO_DH 3089void 3090SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3091 int keylength)) 3092{ 3093 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3094} 3095 3096void 3097SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3098 int keylength)) 3099{ 3100 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3101} 3102#endif 3103 3104#ifndef OPENSSL_NO_ECDH 3105void 3106SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3107 int keylength)) 3108{ 3109 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3110} 3111 3112void 3113SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3114 int keylength)) 3115{ 3116 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3117} 3118#endif 3119 3120#ifndef OPENSSL_NO_PSK 3121int 3122SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3123{ 3124 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3125 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3126 return 0; 3127 } 3128 if (ctx->psk_identity_hint != NULL) 3129 OPENSSL_free(ctx->psk_identity_hint); 3130 if (identity_hint != NULL) { 3131 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3132 if (ctx->psk_identity_hint == NULL) 3133 return 0; 3134 } else 3135 ctx->psk_identity_hint = NULL; 3136 return 1; 3137} 3138 3139int 3140SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3141{ 3142 if (s == NULL) 3143 return 0; 3144 3145 if (s->session == NULL) 3146 return 1; /* session not created yet, ignored */ 3147 3148 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3149 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3150 return 0; 3151 } 3152 if (s->session->psk_identity_hint != NULL) 3153 OPENSSL_free(s->session->psk_identity_hint); 3154 if (identity_hint != NULL) { 3155 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3156 if (s->session->psk_identity_hint == NULL) 3157 return 0; 3158 } else 3159 s->session->psk_identity_hint = NULL; 3160 return 1; 3161} 3162 3163const char 3164*SSL_get_psk_identity_hint(const SSL *s) 3165{ 3166 if (s == NULL || s->session == NULL) 3167 return NULL; 3168 return (s->session->psk_identity_hint); 3169} 3170 3171const char 3172*SSL_get_psk_identity(const SSL *s) 3173{ 3174 if (s == NULL || s->session == NULL) 3175 return NULL; 3176 return (s->session->psk_identity); 3177} 3178 3179void 3180SSL_set_psk_client_callback(SSL *s, 3181 unsigned int (*cb)(SSL *ssl, const char *hint, 3182char *identity, unsigned int max_identity_len, unsigned char *psk, 3183 unsigned int max_psk_len)) 3184{ 3185 s->psk_client_callback = cb; 3186} 3187 3188void 3189SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3190 unsigned int (*cb)(SSL *ssl, const char *hint, 3191char *identity, unsigned int max_identity_len, unsigned char *psk, 3192 unsigned int max_psk_len)) 3193{ 3194 ctx->psk_client_callback = cb; 3195} 3196 3197void 3198SSL_set_psk_server_callback(SSL *s, 3199 unsigned int (*cb)(SSL *ssl, const char *identity, 3200unsigned char *psk, unsigned int max_psk_len)) 3201{ 3202 s->psk_server_callback = cb; 3203} 3204 3205void 3206SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3207 unsigned int (*cb)(SSL *ssl, const char *identity, 3208unsigned char *psk, unsigned int max_psk_len)) 3209{ 3210 ctx->psk_server_callback = cb; 3211} 3212#endif 3213 3214void 3215SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3216{ 3217 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3218} 3219 3220void 3221SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3222{ 3223 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3224} 3225 3226/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3227 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3228 * any. If EVP_MD pointer is passed, initializes ctx with this md 3229 * Returns newly allocated ctx; 3230 */ 3231 3232EVP_MD_CTX 3233*ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3234{ 3235 ssl_clear_hash_ctx(hash); 3236 *hash = EVP_MD_CTX_create(); 3237 if (md) 3238 EVP_DigestInit_ex(*hash, md, NULL); 3239 return *hash; 3240} 3241 3242void 3243ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3244{ 3245 3246 if (*hash) 3247 EVP_MD_CTX_destroy(*hash); 3248 *hash = NULL; 3249} 3250 3251void 3252SSL_set_debug(SSL *s, int debug) 3253{ 3254 s->debug = debug; 3255} 3256 3257int 3258SSL_cache_hit(SSL *s) 3259{ 3260 return s->hit; 3261} 3262 3263IMPLEMENT_STACK_OF(SSL_CIPHER) 3264IMPLEMENT_STACK_OF(SSL_COMP) 3265IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3266ssl_cipher_id); 3267