ssl_lib.c revision 280304
1/* 2 * ! \file ssl/ssl_lib.c \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 /* 167 * evil casts, but these functions are only called if there's a library 168 * bug 169 */ 170 (int (*)(SSL *, int))ssl_undefined_function, 171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 172 ssl_undefined_function, 173 (int (*)(SSL *, unsigned char *, unsigned char *, int)) 174 ssl_undefined_function, 175 (int (*)(SSL *, int))ssl_undefined_function, 176 (int (*)(SSL *, const char *, int, unsigned char *)) 177 ssl_undefined_function, 178 0, /* finish_mac_length */ 179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 180 NULL, /* client_finished_label */ 181 0, /* client_finished_label_len */ 182 NULL, /* server_finished_label */ 183 0, /* server_finished_label_len */ 184 (int (*)(int))ssl_undefined_function, 185 (int (*)(SSL *, unsigned char *, size_t, const char *, 186 size_t, const unsigned char *, size_t, 187 int use_context))ssl_undefined_function, 188}; 189 190int SSL_clear(SSL *s) 191{ 192 193 if (s->method == NULL) { 194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 195 return (0); 196 } 197 198 if (ssl_clear_bad_session(s)) { 199 SSL_SESSION_free(s->session); 200 s->session = NULL; 201 } 202 203 s->error = 0; 204 s->hit = 0; 205 s->shutdown = 0; 206 207#if 0 208 /* 209 * Disabled since version 1.10 of this file (early return not 210 * needed because SSL_clear is not called when doing renegotiation) 211 */ 212 /* 213 * This is set if we are doing dynamic renegotiation so keep 214 * the old cipher. It is sort of a SSL_clear_lite :-) 215 */ 216 if (s->renegotiate) 217 return (1); 218#else 219 if (s->renegotiate) { 220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 221 return 0; 222 } 223#endif 224 225 s->type = 0; 226 227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 228 229 s->version = s->method->version; 230 s->client_version = s->version; 231 s->rwstate = SSL_NOTHING; 232 s->rstate = SSL_ST_READ_HEADER; 233#if 0 234 s->read_ahead = s->ctx->read_ahead; 235#endif 236 237 if (s->init_buf != NULL) { 238 BUF_MEM_free(s->init_buf); 239 s->init_buf = NULL; 240 } 241 242 ssl_clear_cipher_ctx(s); 243 ssl_clear_hash_ctx(&s->read_hash); 244 ssl_clear_hash_ctx(&s->write_hash); 245 246 s->first_packet = 0; 247 248#if 1 249 /* 250 * Check to see if we were changed into a different method, if so, revert 251 * back if we are not doing session-id reuse. 252 */ 253 if (!s->in_handshake && (s->session == NULL) 254 && (s->method != s->ctx->method)) { 255 s->method->ssl_free(s); 256 s->method = s->ctx->method; 257 if (!s->method->ssl_new(s)) 258 return (0); 259 } else 260#endif 261 s->method->ssl_clear(s); 262 return (1); 263} 264 265/** Used to change an SSL_CTXs default SSL method type */ 266int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 267{ 268 STACK_OF(SSL_CIPHER) *sk; 269 270 ctx->method = meth; 271 272 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 273 &(ctx->cipher_list_by_id), 274 meth->version == 275 SSL2_VERSION ? "SSLv2" : 276 SSL_DEFAULT_CIPHER_LIST); 277 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 278 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 279 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 280 return (0); 281 } 282 return (1); 283} 284 285SSL *SSL_new(SSL_CTX *ctx) 286{ 287 SSL *s; 288 289 if (ctx == NULL) { 290 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 291 return (NULL); 292 } 293 if (ctx->method == NULL) { 294 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 295 return (NULL); 296 } 297 298 s = (SSL *)OPENSSL_malloc(sizeof(SSL)); 299 if (s == NULL) 300 goto err; 301 memset(s, 0, sizeof(SSL)); 302 303#ifndef OPENSSL_NO_KRB5 304 s->kssl_ctx = kssl_ctx_new(); 305#endif /* OPENSSL_NO_KRB5 */ 306 307 s->options = ctx->options; 308 s->mode = ctx->mode; 309 s->max_cert_list = ctx->max_cert_list; 310 311 if (ctx->cert != NULL) { 312 /* 313 * Earlier library versions used to copy the pointer to the CERT, not 314 * its contents; only when setting new parameters for the per-SSL 315 * copy, ssl_cert_new would be called (and the direct reference to 316 * the per-SSL_CTX settings would be lost, but those still were 317 * indirectly accessed for various purposes, and for that reason they 318 * used to be known as s->ctx->default_cert). Now we don't look at the 319 * SSL_CTX's CERT after having duplicated it once. 320 */ 321 322 s->cert = ssl_cert_dup(ctx->cert); 323 if (s->cert == NULL) 324 goto err; 325 } else 326 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */ 327 328 s->read_ahead = ctx->read_ahead; 329 s->msg_callback = ctx->msg_callback; 330 s->msg_callback_arg = ctx->msg_callback_arg; 331 s->verify_mode = ctx->verify_mode; 332#if 0 333 s->verify_depth = ctx->verify_depth; 334#endif 335 s->sid_ctx_length = ctx->sid_ctx_length; 336 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 337 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 338 s->verify_callback = ctx->default_verify_callback; 339 s->generate_session_id = ctx->generate_session_id; 340 341 s->param = X509_VERIFY_PARAM_new(); 342 if (!s->param) 343 goto err; 344 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 345#if 0 346 s->purpose = ctx->purpose; 347 s->trust = ctx->trust; 348#endif 349 s->quiet_shutdown = ctx->quiet_shutdown; 350 s->max_send_fragment = ctx->max_send_fragment; 351 352 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 353 s->ctx = ctx; 354#ifndef OPENSSL_NO_TLSEXT 355 s->tlsext_debug_cb = 0; 356 s->tlsext_debug_arg = NULL; 357 s->tlsext_ticket_expected = 0; 358 s->tlsext_status_type = -1; 359 s->tlsext_status_expected = 0; 360 s->tlsext_ocsp_ids = NULL; 361 s->tlsext_ocsp_exts = NULL; 362 s->tlsext_ocsp_resp = NULL; 363 s->tlsext_ocsp_resplen = -1; 364 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 365 s->initial_ctx = ctx; 366# ifndef OPENSSL_NO_NEXTPROTONEG 367 s->next_proto_negotiated = NULL; 368# endif 369#endif 370 371 s->verify_result = X509_V_OK; 372 373 s->method = ctx->method; 374 375 if (!s->method->ssl_new(s)) 376 goto err; 377 378 s->references = 1; 379 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 380 381 SSL_clear(s); 382 383 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 384 385#ifndef OPENSSL_NO_PSK 386 s->psk_client_callback = ctx->psk_client_callback; 387 s->psk_server_callback = ctx->psk_server_callback; 388#endif 389 390 return (s); 391 err: 392 if (s != NULL) 393 SSL_free(s); 394 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 395 return (NULL); 396} 397 398int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 399 unsigned int sid_ctx_len) 400{ 401 if (sid_ctx_len > sizeof ctx->sid_ctx) { 402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 403 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 404 return 0; 405 } 406 ctx->sid_ctx_length = sid_ctx_len; 407 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 408 409 return 1; 410} 411 412int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 413 unsigned int sid_ctx_len) 414{ 415 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 417 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 418 return 0; 419 } 420 ssl->sid_ctx_length = sid_ctx_len; 421 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 422 423 return 1; 424} 425 426int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 427{ 428 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 429 ctx->generate_session_id = cb; 430 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 431 return 1; 432} 433 434int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 435{ 436 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 437 ssl->generate_session_id = cb; 438 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 439 return 1; 440} 441 442int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 443 unsigned int id_len) 444{ 445 /* 446 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 447 * we can "construct" a session to give us the desired check - ie. to 448 * find if there's a session in the hash table that would conflict with 449 * any new session built out of this id/id_len and the ssl_version in use 450 * by this SSL. 451 */ 452 SSL_SESSION r, *p; 453 454 if (id_len > sizeof r.session_id) 455 return 0; 456 457 r.ssl_version = ssl->version; 458 r.session_id_length = id_len; 459 memcpy(r.session_id, id, id_len); 460 /* 461 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 462 * callback is calling us to check the uniqueness of a shorter ID, it 463 * must be compared as a padded-out ID because that is what it will be 464 * converted to when the callback has finished choosing it. 465 */ 466 if ((r.ssl_version == SSL2_VERSION) && 467 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) { 468 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len); 469 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 470 } 471 472 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 473 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 474 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 475 return (p != NULL); 476} 477 478int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 479{ 480 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 481} 482 483int SSL_set_purpose(SSL *s, int purpose) 484{ 485 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 486} 487 488int SSL_CTX_set_trust(SSL_CTX *s, int trust) 489{ 490 return X509_VERIFY_PARAM_set_trust(s->param, trust); 491} 492 493int SSL_set_trust(SSL *s, int trust) 494{ 495 return X509_VERIFY_PARAM_set_trust(s->param, trust); 496} 497 498int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 499{ 500 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 501} 502 503int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 504{ 505 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 506} 507 508void SSL_free(SSL *s) 509{ 510 int i; 511 512 if (s == NULL) 513 return; 514 515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 516#ifdef REF_PRINT 517 REF_PRINT("SSL", s); 518#endif 519 if (i > 0) 520 return; 521#ifdef REF_CHECK 522 if (i < 0) { 523 fprintf(stderr, "SSL_free, bad reference count\n"); 524 abort(); /* ok */ 525 } 526#endif 527 528 if (s->param) 529 X509_VERIFY_PARAM_free(s->param); 530 531 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 532 533 if (s->bbio != NULL) { 534 /* If the buffering BIO is in place, pop it off */ 535 if (s->bbio == s->wbio) { 536 s->wbio = BIO_pop(s->wbio); 537 } 538 BIO_free(s->bbio); 539 s->bbio = NULL; 540 } 541 if (s->rbio != NULL) 542 BIO_free_all(s->rbio); 543 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 544 BIO_free_all(s->wbio); 545 546 if (s->init_buf != NULL) 547 BUF_MEM_free(s->init_buf); 548 549 /* add extra stuff */ 550 if (s->cipher_list != NULL) 551 sk_SSL_CIPHER_free(s->cipher_list); 552 if (s->cipher_list_by_id != NULL) 553 sk_SSL_CIPHER_free(s->cipher_list_by_id); 554 555 /* Make the next call work :-) */ 556 if (s->session != NULL) { 557 ssl_clear_bad_session(s); 558 SSL_SESSION_free(s->session); 559 } 560 561 ssl_clear_cipher_ctx(s); 562 ssl_clear_hash_ctx(&s->read_hash); 563 ssl_clear_hash_ctx(&s->write_hash); 564 565 if (s->cert != NULL) 566 ssl_cert_free(s->cert); 567 /* Free up if allocated */ 568 569#ifndef OPENSSL_NO_TLSEXT 570 if (s->tlsext_hostname) 571 OPENSSL_free(s->tlsext_hostname); 572 if (s->initial_ctx) 573 SSL_CTX_free(s->initial_ctx); 574# ifndef OPENSSL_NO_EC 575 if (s->tlsext_ecpointformatlist) 576 OPENSSL_free(s->tlsext_ecpointformatlist); 577 if (s->tlsext_ellipticcurvelist) 578 OPENSSL_free(s->tlsext_ellipticcurvelist); 579# endif /* OPENSSL_NO_EC */ 580 if (s->tlsext_opaque_prf_input) 581 OPENSSL_free(s->tlsext_opaque_prf_input); 582 if (s->tlsext_ocsp_exts) 583 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); 584 if (s->tlsext_ocsp_ids) 585 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 586 if (s->tlsext_ocsp_resp) 587 OPENSSL_free(s->tlsext_ocsp_resp); 588#endif 589 590 if (s->client_CA != NULL) 591 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 592 593 if (s->method != NULL) 594 s->method->ssl_free(s); 595 596 if (s->ctx) 597 SSL_CTX_free(s->ctx); 598 599#ifndef OPENSSL_NO_KRB5 600 if (s->kssl_ctx != NULL) 601 kssl_ctx_free(s->kssl_ctx); 602#endif /* OPENSSL_NO_KRB5 */ 603 604#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 605 if (s->next_proto_negotiated) 606 OPENSSL_free(s->next_proto_negotiated); 607#endif 608 609#ifndef OPENSSL_NO_SRTP 610 if (s->srtp_profiles) 611 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 612#endif 613 614 OPENSSL_free(s); 615} 616 617void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 618{ 619 /* 620 * If the output buffering BIO is still in place, remove it 621 */ 622 if (s->bbio != NULL) { 623 if (s->wbio == s->bbio) { 624 s->wbio = s->wbio->next_bio; 625 s->bbio->next_bio = NULL; 626 } 627 } 628 if ((s->rbio != NULL) && (s->rbio != rbio)) 629 BIO_free_all(s->rbio); 630 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 631 BIO_free_all(s->wbio); 632 s->rbio = rbio; 633 s->wbio = wbio; 634} 635 636BIO *SSL_get_rbio(const SSL *s) 637{ 638 return (s->rbio); 639} 640 641BIO *SSL_get_wbio(const SSL *s) 642{ 643 return (s->wbio); 644} 645 646int SSL_get_fd(const SSL *s) 647{ 648 return (SSL_get_rfd(s)); 649} 650 651int SSL_get_rfd(const SSL *s) 652{ 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_rbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661} 662 663int SSL_get_wfd(const SSL *s) 664{ 665 int ret = -1; 666 BIO *b, *r; 667 668 b = SSL_get_wbio(s); 669 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 670 if (r != NULL) 671 BIO_get_fd(r, &ret); 672 return (ret); 673} 674 675#ifndef OPENSSL_NO_SOCK 676int SSL_set_fd(SSL *s, int fd) 677{ 678 int ret = 0; 679 BIO *bio = NULL; 680 681 bio = BIO_new(BIO_s_socket()); 682 683 if (bio == NULL) { 684 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 685 goto err; 686 } 687 BIO_set_fd(bio, fd, BIO_NOCLOSE); 688 SSL_set_bio(s, bio, bio); 689 ret = 1; 690 err: 691 return (ret); 692} 693 694int SSL_set_wfd(SSL *s, int fd) 695{ 696 int ret = 0; 697 BIO *bio = NULL; 698 699 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 700 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 701 bio = BIO_new(BIO_s_socket()); 702 703 if (bio == NULL) { 704 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 705 goto err; 706 } 707 BIO_set_fd(bio, fd, BIO_NOCLOSE); 708 SSL_set_bio(s, SSL_get_rbio(s), bio); 709 } else 710 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 711 ret = 1; 712 err: 713 return (ret); 714} 715 716int SSL_set_rfd(SSL *s, int fd) 717{ 718 int ret = 0; 719 BIO *bio = NULL; 720 721 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 722 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 723 bio = BIO_new(BIO_s_socket()); 724 725 if (bio == NULL) { 726 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 727 goto err; 728 } 729 BIO_set_fd(bio, fd, BIO_NOCLOSE); 730 SSL_set_bio(s, bio, SSL_get_wbio(s)); 731 } else 732 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 733 ret = 1; 734 err: 735 return (ret); 736} 737#endif 738 739/* return length of latest Finished message we sent, copy to 'buf' */ 740size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 741{ 742 size_t ret = 0; 743 744 if (s->s3 != NULL) { 745 ret = s->s3->tmp.finish_md_len; 746 if (count > ret) 747 count = ret; 748 memcpy(buf, s->s3->tmp.finish_md, count); 749 } 750 return ret; 751} 752 753/* return length of latest Finished message we expected, copy to 'buf' */ 754size_t SSL_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 767int SSL_get_verify_mode(const SSL *s) 768{ 769 return (s->verify_mode); 770} 771 772int SSL_get_verify_depth(const SSL *s) 773{ 774 return X509_VERIFY_PARAM_get_depth(s->param); 775} 776 777int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { 778 return (s->verify_callback); 779} 780 781int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 782{ 783 return (ctx->verify_mode); 784} 785 786int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 787{ 788 return X509_VERIFY_PARAM_get_depth(ctx->param); 789} 790 791int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { 792 return (ctx->default_verify_callback); 793} 794 795void SSL_set_verify(SSL *s, int mode, 796 int (*callback) (int ok, X509_STORE_CTX *ctx)) 797{ 798 s->verify_mode = mode; 799 if (callback != NULL) 800 s->verify_callback = callback; 801} 802 803void SSL_set_verify_depth(SSL *s, int depth) 804{ 805 X509_VERIFY_PARAM_set_depth(s->param, depth); 806} 807 808void SSL_set_read_ahead(SSL *s, int yes) 809{ 810 s->read_ahead = yes; 811} 812 813int SSL_get_read_ahead(const SSL *s) 814{ 815 return (s->read_ahead); 816} 817 818int SSL_pending(const SSL *s) 819{ 820 /* 821 * SSL_pending cannot work properly if read-ahead is enabled 822 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is 823 * impossible to fix since SSL_pending cannot report errors that may be 824 * observed while scanning the new data. (Note that SSL_pending() is 825 * often used as a boolean value, so we'd better not return -1.) 826 */ 827 return (s->method->ssl_pending(s)); 828} 829 830X509 *SSL_get_peer_certificate(const SSL *s) 831{ 832 X509 *r; 833 834 if ((s == NULL) || (s->session == NULL)) 835 r = NULL; 836 else 837 r = s->session->peer; 838 839 if (r == NULL) 840 return (r); 841 842 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 843 844 return (r); 845} 846 847STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 848{ 849 STACK_OF(X509) *r; 850 851 if ((s == NULL) || (s->session == NULL) 852 || (s->session->sess_cert == NULL)) 853 r = NULL; 854 else 855 r = s->session->sess_cert->cert_chain; 856 857 /* 858 * If we are a client, cert_chain includes the peer's own certificate; if 859 * we are a server, it does not. 860 */ 861 862 return (r); 863} 864 865/* 866 * Now in theory, since the calling process own 't' it should be safe to 867 * modify. We need to be able to read f without being hassled 868 */ 869void SSL_copy_session_id(SSL *t, const SSL *f) 870{ 871 CERT *tmp; 872 873 /* Do we need to to SSL locking? */ 874 SSL_set_session(t, SSL_get_session(f)); 875 876 /* 877 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa 878 */ 879 if (t->method != f->method) { 880 t->method->ssl_free(t); /* cleanup current */ 881 t->method = f->method; /* change method */ 882 t->method->ssl_new(t); /* setup new */ 883 } 884 885 tmp = t->cert; 886 if (f->cert != NULL) { 887 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 888 t->cert = f->cert; 889 } else 890 t->cert = NULL; 891 if (tmp != NULL) 892 ssl_cert_free(tmp); 893 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 894} 895 896/* Fix this so it checks all the valid key/cert options */ 897int SSL_CTX_check_private_key(const SSL_CTX *ctx) 898{ 899 if ((ctx == NULL) || 900 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) { 901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 902 SSL_R_NO_CERTIFICATE_ASSIGNED); 903 return (0); 904 } 905 if (ctx->cert->key->privatekey == NULL) { 906 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 907 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 908 return (0); 909 } 910 return (X509_check_private_key 911 (ctx->cert->key->x509, ctx->cert->key->privatekey)); 912} 913 914/* Fix this function so that it takes an optional type parameter */ 915int SSL_check_private_key(const SSL *ssl) 916{ 917 if (ssl == NULL) { 918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 919 return (0); 920 } 921 if (ssl->cert == NULL) { 922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 923 return 0; 924 } 925 if (ssl->cert->key->x509 == NULL) { 926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 927 return (0); 928 } 929 if (ssl->cert->key->privatekey == NULL) { 930 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 931 return (0); 932 } 933 return (X509_check_private_key(ssl->cert->key->x509, 934 ssl->cert->key->privatekey)); 935} 936 937int SSL_accept(SSL *s) 938{ 939 if (s->handshake_func == 0) 940 /* Not properly initialized yet */ 941 SSL_set_accept_state(s); 942 943 return (s->method->ssl_accept(s)); 944} 945 946int SSL_connect(SSL *s) 947{ 948 if (s->handshake_func == 0) 949 /* Not properly initialized yet */ 950 SSL_set_connect_state(s); 951 952 return (s->method->ssl_connect(s)); 953} 954 955long SSL_get_default_timeout(const SSL *s) 956{ 957 return (s->method->get_timeout()); 958} 959 960int SSL_read(SSL *s, void *buf, int num) 961{ 962 if (s->handshake_func == 0) { 963 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 964 return -1; 965 } 966 967 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 968 s->rwstate = SSL_NOTHING; 969 return (0); 970 } 971 return (s->method->ssl_read(s, buf, num)); 972} 973 974int SSL_peek(SSL *s, void *buf, int num) 975{ 976 if (s->handshake_func == 0) { 977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 978 return -1; 979 } 980 981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 982 return (0); 983 } 984 return (s->method->ssl_peek(s, buf, num)); 985} 986 987int SSL_write(SSL *s, const void *buf, int num) 988{ 989 if (s->handshake_func == 0) { 990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 991 return -1; 992 } 993 994 if (s->shutdown & SSL_SENT_SHUTDOWN) { 995 s->rwstate = SSL_NOTHING; 996 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 997 return (-1); 998 } 999 return (s->method->ssl_write(s, buf, num)); 1000} 1001 1002int SSL_shutdown(SSL *s) 1003{ 1004 /* 1005 * Note that this function behaves differently from what one might 1006 * expect. Return values are 0 for no success (yet), 1 for success; but 1007 * calling it once is usually not enough, even if blocking I/O is used 1008 * (see ssl3_shutdown). 1009 */ 1010 1011 if (s->handshake_func == 0) { 1012 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1013 return -1; 1014 } 1015 1016 if ((s != NULL) && !SSL_in_init(s)) 1017 return (s->method->ssl_shutdown(s)); 1018 else 1019 return (1); 1020} 1021 1022int SSL_renegotiate(SSL *s) 1023{ 1024 if (s->renegotiate == 0) 1025 s->renegotiate = 1; 1026 1027 s->new_session = 1; 1028 1029 return (s->method->ssl_renegotiate(s)); 1030} 1031 1032int SSL_renegotiate_abbreviated(SSL *s) 1033{ 1034 if (s->renegotiate == 0) 1035 s->renegotiate = 1; 1036 1037 s->new_session = 0; 1038 1039 return (s->method->ssl_renegotiate(s)); 1040} 1041 1042int SSL_renegotiate_pending(SSL *s) 1043{ 1044 /* 1045 * becomes true when negotiation is requested; false again once a 1046 * handshake has finished 1047 */ 1048 return (s->renegotiate != 0); 1049} 1050 1051long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1052{ 1053 long l; 1054 1055 switch (cmd) { 1056 case SSL_CTRL_GET_READ_AHEAD: 1057 return (s->read_ahead); 1058 case SSL_CTRL_SET_READ_AHEAD: 1059 l = s->read_ahead; 1060 s->read_ahead = larg; 1061 return (l); 1062 1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1064 s->msg_callback_arg = parg; 1065 return 1; 1066 1067 case SSL_CTRL_OPTIONS: 1068 return (s->options |= larg); 1069 case SSL_CTRL_CLEAR_OPTIONS: 1070 return (s->options &= ~larg); 1071 case SSL_CTRL_MODE: 1072 return (s->mode |= larg); 1073 case SSL_CTRL_CLEAR_MODE: 1074 return (s->mode &= ~larg); 1075 case SSL_CTRL_GET_MAX_CERT_LIST: 1076 return (s->max_cert_list); 1077 case SSL_CTRL_SET_MAX_CERT_LIST: 1078 l = s->max_cert_list; 1079 s->max_cert_list = larg; 1080 return (l); 1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1083 return 0; 1084 s->max_send_fragment = larg; 1085 return 1; 1086 case SSL_CTRL_GET_RI_SUPPORT: 1087 if (s->s3) 1088 return s->s3->send_connection_binding; 1089 else 1090 return 0; 1091 default: 1092 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1093 } 1094} 1095 1096long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) 1097{ 1098 switch (cmd) { 1099 case SSL_CTRL_SET_MSG_CALLBACK: 1100 s->msg_callback = (void (*) 1101 (int write_p, int version, int content_type, 1102 const void *buf, size_t len, SSL *ssl, 1103 void *arg))(fp); 1104 return 1; 1105 1106 default: 1107 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1108 } 1109} 1110 1111LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1112{ 1113 return ctx->sessions; 1114} 1115 1116long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1117{ 1118 long l; 1119 1120 switch (cmd) { 1121 case SSL_CTRL_GET_READ_AHEAD: 1122 return (ctx->read_ahead); 1123 case SSL_CTRL_SET_READ_AHEAD: 1124 l = ctx->read_ahead; 1125 ctx->read_ahead = larg; 1126 return (l); 1127 1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1129 ctx->msg_callback_arg = parg; 1130 return 1; 1131 1132 case SSL_CTRL_GET_MAX_CERT_LIST: 1133 return (ctx->max_cert_list); 1134 case SSL_CTRL_SET_MAX_CERT_LIST: 1135 l = ctx->max_cert_list; 1136 ctx->max_cert_list = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1140 l = ctx->session_cache_size; 1141 ctx->session_cache_size = larg; 1142 return (l); 1143 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1144 return (ctx->session_cache_size); 1145 case SSL_CTRL_SET_SESS_CACHE_MODE: 1146 l = ctx->session_cache_mode; 1147 ctx->session_cache_mode = larg; 1148 return (l); 1149 case SSL_CTRL_GET_SESS_CACHE_MODE: 1150 return (ctx->session_cache_mode); 1151 1152 case SSL_CTRL_SESS_NUMBER: 1153 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1154 case SSL_CTRL_SESS_CONNECT: 1155 return (ctx->stats.sess_connect); 1156 case SSL_CTRL_SESS_CONNECT_GOOD: 1157 return (ctx->stats.sess_connect_good); 1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1159 return (ctx->stats.sess_connect_renegotiate); 1160 case SSL_CTRL_SESS_ACCEPT: 1161 return (ctx->stats.sess_accept); 1162 case SSL_CTRL_SESS_ACCEPT_GOOD: 1163 return (ctx->stats.sess_accept_good); 1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1165 return (ctx->stats.sess_accept_renegotiate); 1166 case SSL_CTRL_SESS_HIT: 1167 return (ctx->stats.sess_hit); 1168 case SSL_CTRL_SESS_CB_HIT: 1169 return (ctx->stats.sess_cb_hit); 1170 case SSL_CTRL_SESS_MISSES: 1171 return (ctx->stats.sess_miss); 1172 case SSL_CTRL_SESS_TIMEOUTS: 1173 return (ctx->stats.sess_timeout); 1174 case SSL_CTRL_SESS_CACHE_FULL: 1175 return (ctx->stats.sess_cache_full); 1176 case SSL_CTRL_OPTIONS: 1177 return (ctx->options |= larg); 1178 case SSL_CTRL_CLEAR_OPTIONS: 1179 return (ctx->options &= ~larg); 1180 case SSL_CTRL_MODE: 1181 return (ctx->mode |= larg); 1182 case SSL_CTRL_CLEAR_MODE: 1183 return (ctx->mode &= ~larg); 1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1186 return 0; 1187 ctx->max_send_fragment = larg; 1188 return 1; 1189 default: 1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1191 } 1192} 1193 1194long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) 1195{ 1196 switch (cmd) { 1197 case SSL_CTRL_SET_MSG_CALLBACK: 1198 ctx->msg_callback = (void (*) 1199 (int write_p, int version, int content_type, 1200 const void *buf, size_t len, SSL *ssl, 1201 void *arg))(fp); 1202 return 1; 1203 1204 default: 1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1206 } 1207} 1208 1209int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1210{ 1211 long l; 1212 1213 l = a->id - b->id; 1214 if (l == 0L) 1215 return (0); 1216 else 1217 return ((l > 0) ? 1 : -1); 1218} 1219 1220int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 1221 const SSL_CIPHER *const *bp) 1222{ 1223 long l; 1224 1225 l = (*ap)->id - (*bp)->id; 1226 if (l == 0L) 1227 return (0); 1228 else 1229 return ((l > 0) ? 1 : -1); 1230} 1231 1232/** return a STACK of the ciphers available for the SSL and in order of 1233 * preference */ 1234STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1235{ 1236 if (s != NULL) { 1237 if (s->cipher_list != NULL) { 1238 return (s->cipher_list); 1239 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1240 return (s->ctx->cipher_list); 1241 } 1242 } 1243 return (NULL); 1244} 1245 1246/** return a STACK of the ciphers available for the SSL and in order of 1247 * algorithm id */ 1248STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1249{ 1250 if (s != NULL) { 1251 if (s->cipher_list_by_id != NULL) { 1252 return (s->cipher_list_by_id); 1253 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { 1254 return (s->ctx->cipher_list_by_id); 1255 } 1256 } 1257 return (NULL); 1258} 1259 1260/** The old interface to get the same thing as SSL_get_ciphers() */ 1261const char *SSL_get_cipher_list(const SSL *s, int n) 1262{ 1263 SSL_CIPHER *c; 1264 STACK_OF(SSL_CIPHER) *sk; 1265 1266 if (s == NULL) 1267 return (NULL); 1268 sk = SSL_get_ciphers(s); 1269 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1270 return (NULL); 1271 c = sk_SSL_CIPHER_value(sk, n); 1272 if (c == NULL) 1273 return (NULL); 1274 return (c->name); 1275} 1276 1277/** specify the ciphers to be used by default by the SSL_CTX */ 1278int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1279{ 1280 STACK_OF(SSL_CIPHER) *sk; 1281 1282 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1283 &ctx->cipher_list_by_id, str); 1284 /* 1285 * ssl_create_cipher_list may return an empty stack if it was unable to 1286 * find a cipher matching the given rule string (for example if the rule 1287 * string specifies a cipher which has been disabled). This is not an 1288 * error as far as ssl_create_cipher_list is concerned, and hence 1289 * ctx->cipher_list and ctx->cipher_list_by_id has been updated. 1290 */ 1291 if (sk == NULL) 1292 return 0; 1293 else if (sk_SSL_CIPHER_num(sk) == 0) { 1294 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1295 return 0; 1296 } 1297 return 1; 1298} 1299 1300/** specify the ciphers to be used by the SSL */ 1301int SSL_set_cipher_list(SSL *s, const char *str) 1302{ 1303 STACK_OF(SSL_CIPHER) *sk; 1304 1305 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1306 &s->cipher_list_by_id, str); 1307 /* see comment in SSL_CTX_set_cipher_list */ 1308 if (sk == NULL) 1309 return 0; 1310 else if (sk_SSL_CIPHER_num(sk) == 0) { 1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1312 return 0; 1313 } 1314 return 1; 1315} 1316 1317/* works well for SSLv2, not so good for SSLv3 */ 1318char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1319{ 1320 char *p; 1321 STACK_OF(SSL_CIPHER) *sk; 1322 SSL_CIPHER *c; 1323 int i; 1324 1325 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) 1326 return (NULL); 1327 1328 p = buf; 1329 sk = s->session->ciphers; 1330 1331 if (sk_SSL_CIPHER_num(sk) == 0) 1332 return NULL; 1333 1334 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1335 int n; 1336 1337 c = sk_SSL_CIPHER_value(sk, i); 1338 n = strlen(c->name); 1339 if (n + 1 > len) { 1340 if (p != buf) 1341 --p; 1342 *p = '\0'; 1343 return buf; 1344 } 1345 strcpy(p, c->name); 1346 p += n; 1347 *(p++) = ':'; 1348 len -= n + 1; 1349 } 1350 p[-1] = '\0'; 1351 return (buf); 1352} 1353 1354int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1355 unsigned char *p, 1356 int (*put_cb) (const SSL_CIPHER *, 1357 unsigned char *)) 1358{ 1359 int i, j = 0; 1360 SSL_CIPHER *c; 1361 unsigned char *q; 1362#ifndef OPENSSL_NO_KRB5 1363 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1364#endif /* OPENSSL_NO_KRB5 */ 1365 1366 if (sk == NULL) 1367 return (0); 1368 q = p; 1369 if (put_cb == NULL) 1370 put_cb = s->method->put_cipher_by_char; 1371 1372 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1373 c = sk_SSL_CIPHER_value(sk, i); 1374 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1375 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1376 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1377 continue; 1378#ifndef OPENSSL_NO_KRB5 1379 if (((c->algorithm_mkey & SSL_kKRB5) 1380 || (c->algorithm_auth & SSL_aKRB5)) && nokrb5) 1381 continue; 1382#endif /* OPENSSL_NO_KRB5 */ 1383#ifndef OPENSSL_NO_PSK 1384 /* with PSK there must be client callback set */ 1385 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) 1386 && s->psk_client_callback == NULL) 1387 continue; 1388#endif /* OPENSSL_NO_PSK */ 1389#ifndef OPENSSL_NO_SRP 1390 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) 1391 && !(s->srp_ctx.srp_Mask & SSL_kSRP)) 1392 continue; 1393#endif /* OPENSSL_NO_SRP */ 1394 j = put_cb(c, p); 1395 p += j; 1396 } 1397 /* 1398 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1399 * applicable SCSVs. 1400 */ 1401 if (p != q) { 1402 if (!s->renegotiate) { 1403 static SSL_CIPHER scsv = { 1404 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1405 }; 1406 j = put_cb(&scsv, p); 1407 p += j; 1408#ifdef OPENSSL_RI_DEBUG 1409 fprintf(stderr, 1410 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1411#endif 1412 } 1413 1414 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1415 static SSL_CIPHER scsv = { 1416 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1417 }; 1418 j = put_cb(&scsv, p); 1419 p += j; 1420 } 1421 } 1422 1423 return (p - q); 1424} 1425 1426STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1427 int num, 1428 STACK_OF(SSL_CIPHER) **skp) 1429{ 1430 const SSL_CIPHER *c; 1431 STACK_OF(SSL_CIPHER) *sk; 1432 int i, n; 1433 1434 if (s->s3) 1435 s->s3->send_connection_binding = 0; 1436 1437 n = ssl_put_cipher_by_char(s, NULL, NULL); 1438 if (n == 0 || (num % n) != 0) { 1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1440 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1441 return (NULL); 1442 } 1443 if ((skp == NULL) || (*skp == NULL)) 1444 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1445 else { 1446 sk = *skp; 1447 sk_SSL_CIPHER_zero(sk); 1448 } 1449 1450 for (i = 0; i < num; i += n) { 1451 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1452 if (s->s3 && (n != 3 || !p[0]) && 1453 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1454 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1455 /* SCSV fatal if renegotiating */ 1456 if (s->renegotiate) { 1457 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1458 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1459 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1460 goto err; 1461 } 1462 s->s3->send_connection_binding = 1; 1463 p += n; 1464#ifdef OPENSSL_RI_DEBUG 1465 fprintf(stderr, "SCSV received by server\n"); 1466#endif 1467 continue; 1468 } 1469 1470 /* Check for TLS_FALLBACK_SCSV */ 1471 if ((n != 3 || !p[0]) && 1472 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1473 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1474 /* 1475 * The SCSV indicates that the client previously tried a higher 1476 * version. Fail if the current version is an unexpected 1477 * downgrade. 1478 */ 1479 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1480 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1481 SSL_R_INAPPROPRIATE_FALLBACK); 1482 if (s->s3) 1483 ssl3_send_alert(s, SSL3_AL_FATAL, 1484 SSL_AD_INAPPROPRIATE_FALLBACK); 1485 goto err; 1486 } 1487 p += n; 1488 continue; 1489 } 1490 1491 c = ssl_get_cipher_by_char(s, p); 1492 p += n; 1493 if (c != NULL) { 1494 if (!sk_SSL_CIPHER_push(sk, c)) { 1495 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1496 goto err; 1497 } 1498 } 1499 } 1500 1501 if (skp != NULL) 1502 *skp = sk; 1503 return (sk); 1504 err: 1505 if ((skp == NULL) || (*skp == NULL)) 1506 sk_SSL_CIPHER_free(sk); 1507 return (NULL); 1508} 1509 1510#ifndef OPENSSL_NO_TLSEXT 1511/** return a servername extension value if provided in Client Hello, or NULL. 1512 * So far, only host_name types are defined (RFC 3546). 1513 */ 1514 1515const char *SSL_get_servername(const SSL *s, const int type) 1516{ 1517 if (type != TLSEXT_NAMETYPE_host_name) 1518 return NULL; 1519 1520 return s->session && !s->tlsext_hostname ? 1521 s->session->tlsext_hostname : s->tlsext_hostname; 1522} 1523 1524int SSL_get_servername_type(const SSL *s) 1525{ 1526 if (s->session 1527 && (!s->tlsext_hostname ? s->session-> 1528 tlsext_hostname : s->tlsext_hostname)) 1529 return TLSEXT_NAMETYPE_host_name; 1530 return -1; 1531} 1532 1533# ifndef OPENSSL_NO_NEXTPROTONEG 1534/* 1535 * SSL_select_next_proto implements the standard protocol selection. It is 1536 * expected that this function is called from the callback set by 1537 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1538 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1539 * not included in the length. A byte string of length 0 is invalid. No byte 1540 * string may be truncated. The current, but experimental algorithm for 1541 * selecting the protocol is: 1) If the server doesn't support NPN then this 1542 * is indicated to the callback. In this case, the client application has to 1543 * abort the connection or have a default application level protocol. 2) If 1544 * the server supports NPN, but advertises an empty list then the client 1545 * selects the first protcol in its list, but indicates via the API that this 1546 * fallback case was enacted. 3) Otherwise, the client finds the first 1547 * protocol in the server's list that it supports and selects this protocol. 1548 * This is because it's assumed that the server has better information about 1549 * which protocol a client should use. 4) If the client doesn't support any 1550 * of the server's advertised protocols, then this is treated the same as 1551 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1552 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1553 */ 1554int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1555 const unsigned char *server, 1556 unsigned int server_len, 1557 const unsigned char *client, 1558 unsigned int client_len) 1559{ 1560 unsigned int i, j; 1561 const unsigned char *result; 1562 int status = OPENSSL_NPN_UNSUPPORTED; 1563 1564 /* 1565 * For each protocol in server preference order, see if we support it. 1566 */ 1567 for (i = 0; i < server_len;) { 1568 for (j = 0; j < client_len;) { 1569 if (server[i] == client[j] && 1570 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1571 /* We found a match */ 1572 result = &server[i]; 1573 status = OPENSSL_NPN_NEGOTIATED; 1574 goto found; 1575 } 1576 j += client[j]; 1577 j++; 1578 } 1579 i += server[i]; 1580 i++; 1581 } 1582 1583 /* There's no overlap between our protocols and the server's list. */ 1584 result = client; 1585 status = OPENSSL_NPN_NO_OVERLAP; 1586 1587 found: 1588 *out = (unsigned char *)result + 1; 1589 *outlen = result[0]; 1590 return status; 1591} 1592 1593/* 1594 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1595 * client's requested protocol for this connection and returns 0. If the 1596 * client didn't request any protocol, then *data is set to NULL. Note that 1597 * the client can request any protocol it chooses. The value returned from 1598 * this function need not be a member of the list of supported protocols 1599 * provided by the callback. 1600 */ 1601void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1602 unsigned *len) 1603{ 1604 *data = s->next_proto_negotiated; 1605 if (!*data) { 1606 *len = 0; 1607 } else { 1608 *len = s->next_proto_negotiated_len; 1609 } 1610} 1611 1612/* 1613 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1614 * a TLS server needs a list of supported protocols for Next Protocol 1615 * Negotiation. The returned list must be in wire format. The list is 1616 * returned by setting |out| to point to it and |outlen| to its length. This 1617 * memory will not be modified, but one should assume that the SSL* keeps a 1618 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1619 * wishes to advertise. Otherwise, no such extension will be included in the 1620 * ServerHello. 1621 */ 1622void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1623 int (*cb) (SSL *ssl, 1624 const unsigned char 1625 **out, 1626 unsigned int *outlen, 1627 void *arg), void *arg) 1628{ 1629 ctx->next_protos_advertised_cb = cb; 1630 ctx->next_protos_advertised_cb_arg = arg; 1631} 1632 1633/* 1634 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1635 * client needs to select a protocol from the server's provided list. |out| 1636 * must be set to point to the selected protocol (which may be within |in|). 1637 * The length of the protocol name must be written into |outlen|. The 1638 * server's advertised protocols are provided in |in| and |inlen|. The 1639 * callback can assume that |in| is syntactically valid. The client must 1640 * select a protocol. It is fatal to the connection if this callback returns 1641 * a value other than SSL_TLSEXT_ERR_OK. 1642 */ 1643void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1644 int (*cb) (SSL *s, unsigned char **out, 1645 unsigned char *outlen, 1646 const unsigned char *in, 1647 unsigned int inlen, 1648 void *arg), void *arg) 1649{ 1650 ctx->next_proto_select_cb = cb; 1651 ctx->next_proto_select_cb_arg = arg; 1652} 1653# endif 1654#endif 1655 1656int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1657 const char *label, size_t llen, 1658 const unsigned char *p, size_t plen, 1659 int use_context) 1660{ 1661 if (s->version < TLS1_VERSION) 1662 return -1; 1663 1664 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1665 llen, p, plen, 1666 use_context); 1667} 1668 1669static unsigned long ssl_session_hash(const SSL_SESSION *a) 1670{ 1671 unsigned long l; 1672 1673 l = (unsigned long) 1674 ((unsigned int)a->session_id[0]) | 1675 ((unsigned int)a->session_id[1] << 8L) | 1676 ((unsigned long)a->session_id[2] << 16L) | 1677 ((unsigned long)a->session_id[3] << 24L); 1678 return (l); 1679} 1680 1681/* 1682 * NB: If this function (or indeed the hash function which uses a sort of 1683 * coarser function than this one) is changed, ensure 1684 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1685 * being able to construct an SSL_SESSION that will collide with any existing 1686 * session with a matching session ID. 1687 */ 1688static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1689{ 1690 if (a->ssl_version != b->ssl_version) 1691 return (1); 1692 if (a->session_id_length != b->session_id_length) 1693 return (1); 1694 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1695} 1696 1697/* 1698 * These wrapper functions should remain rather than redeclaring 1699 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1700 * variable. The reason is that the functions aren't static, they're exposed 1701 * via ssl.h. 1702 */ 1703static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1704static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1705 1706SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1707{ 1708 SSL_CTX *ret = NULL; 1709 1710 if (meth == NULL) { 1711 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1712 return (NULL); 1713 } 1714#ifdef OPENSSL_FIPS 1715 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1716 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1717 return NULL; 1718 } 1719#endif 1720 1721 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1722 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1723 goto err; 1724 } 1725 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1726 if (ret == NULL) 1727 goto err; 1728 1729 memset(ret, 0, sizeof(SSL_CTX)); 1730 1731 ret->method = meth; 1732 1733 ret->cert_store = NULL; 1734 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1735 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1736 ret->session_cache_head = NULL; 1737 ret->session_cache_tail = NULL; 1738 1739 /* We take the system default */ 1740 ret->session_timeout = meth->get_timeout(); 1741 1742 ret->new_session_cb = 0; 1743 ret->remove_session_cb = 0; 1744 ret->get_session_cb = 0; 1745 ret->generate_session_id = 0; 1746 1747 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1748 1749 ret->references = 1; 1750 ret->quiet_shutdown = 0; 1751 1752/* ret->cipher=NULL;*/ 1753/*- 1754 ret->s2->challenge=NULL; 1755 ret->master_key=NULL; 1756 ret->key_arg=NULL; 1757 ret->s2->conn_id=NULL; */ 1758 1759 ret->info_callback = NULL; 1760 1761 ret->app_verify_callback = 0; 1762 ret->app_verify_arg = NULL; 1763 1764 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1765 ret->read_ahead = 0; 1766 ret->msg_callback = 0; 1767 ret->msg_callback_arg = NULL; 1768 ret->verify_mode = SSL_VERIFY_NONE; 1769#if 0 1770 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1771#endif 1772 ret->sid_ctx_length = 0; 1773 ret->default_verify_callback = NULL; 1774 if ((ret->cert = ssl_cert_new()) == NULL) 1775 goto err; 1776 1777 ret->default_passwd_callback = 0; 1778 ret->default_passwd_callback_userdata = NULL; 1779 ret->client_cert_cb = 0; 1780 ret->app_gen_cookie_cb = 0; 1781 ret->app_verify_cookie_cb = 0; 1782 1783 ret->sessions = lh_SSL_SESSION_new(); 1784 if (ret->sessions == NULL) 1785 goto err; 1786 ret->cert_store = X509_STORE_new(); 1787 if (ret->cert_store == NULL) 1788 goto err; 1789 1790 ssl_create_cipher_list(ret->method, 1791 &ret->cipher_list, &ret->cipher_list_by_id, 1792 meth->version == 1793 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1794 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1795 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1796 goto err2; 1797 } 1798 1799 ret->param = X509_VERIFY_PARAM_new(); 1800 if (!ret->param) 1801 goto err; 1802 1803 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1804 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1805 goto err2; 1806 } 1807 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1808 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1809 goto err2; 1810 } 1811 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1812 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1813 goto err2; 1814 } 1815 1816 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1817 goto err; 1818 1819 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1820 1821 ret->extra_certs = NULL; 1822 /* No compression for DTLS */ 1823 if (meth->version != DTLS1_VERSION) 1824 ret->comp_methods = SSL_COMP_get_compression_methods(); 1825 1826 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1827 1828#ifndef OPENSSL_NO_TLSEXT 1829 ret->tlsext_servername_callback = 0; 1830 ret->tlsext_servername_arg = NULL; 1831 /* Setup RFC4507 ticket keys */ 1832 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1833 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1834 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1835 ret->options |= SSL_OP_NO_TICKET; 1836 1837 ret->tlsext_status_cb = 0; 1838 ret->tlsext_status_arg = NULL; 1839 1840# ifndef OPENSSL_NO_NEXTPROTONEG 1841 ret->next_protos_advertised_cb = 0; 1842 ret->next_proto_select_cb = 0; 1843# endif 1844#endif 1845#ifndef OPENSSL_NO_PSK 1846 ret->psk_identity_hint = NULL; 1847 ret->psk_client_callback = NULL; 1848 ret->psk_server_callback = NULL; 1849#endif 1850#ifndef OPENSSL_NO_SRP 1851 SSL_CTX_SRP_CTX_init(ret); 1852#endif 1853#ifndef OPENSSL_NO_BUF_FREELISTS 1854 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1855 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1856 if (!ret->rbuf_freelist) 1857 goto err; 1858 ret->rbuf_freelist->chunklen = 0; 1859 ret->rbuf_freelist->len = 0; 1860 ret->rbuf_freelist->head = NULL; 1861 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1862 if (!ret->wbuf_freelist) { 1863 OPENSSL_free(ret->rbuf_freelist); 1864 goto err; 1865 } 1866 ret->wbuf_freelist->chunklen = 0; 1867 ret->wbuf_freelist->len = 0; 1868 ret->wbuf_freelist->head = NULL; 1869#endif 1870#ifndef OPENSSL_NO_ENGINE 1871 ret->client_cert_engine = NULL; 1872# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1873# define eng_strx(x) #x 1874# define eng_str(x) eng_strx(x) 1875 /* Use specific client engine automatically... ignore errors */ 1876 { 1877 ENGINE *eng; 1878 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1879 if (!eng) { 1880 ERR_clear_error(); 1881 ENGINE_load_builtin_engines(); 1882 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1883 } 1884 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1885 ERR_clear_error(); 1886 } 1887# endif 1888#endif 1889 /* 1890 * Default is to connect to non-RI servers. When RI is more widely 1891 * deployed might change this. 1892 */ 1893 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1894 1895 return (ret); 1896 err: 1897 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1898 err2: 1899 if (ret != NULL) 1900 SSL_CTX_free(ret); 1901 return (NULL); 1902} 1903 1904#if 0 1905static void SSL_COMP_free(SSL_COMP *comp) 1906{ 1907 OPENSSL_free(comp); 1908} 1909#endif 1910 1911#ifndef OPENSSL_NO_BUF_FREELISTS 1912static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1913{ 1914 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1915 for (ent = list->head; ent; ent = next) { 1916 next = ent->next; 1917 OPENSSL_free(ent); 1918 } 1919 OPENSSL_free(list); 1920} 1921#endif 1922 1923void SSL_CTX_free(SSL_CTX *a) 1924{ 1925 int i; 1926 1927 if (a == NULL) 1928 return; 1929 1930 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1931#ifdef REF_PRINT 1932 REF_PRINT("SSL_CTX", a); 1933#endif 1934 if (i > 0) 1935 return; 1936#ifdef REF_CHECK 1937 if (i < 0) { 1938 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 1939 abort(); /* ok */ 1940 } 1941#endif 1942 1943 if (a->param) 1944 X509_VERIFY_PARAM_free(a->param); 1945 1946 /* 1947 * Free internal session cache. However: the remove_cb() may reference 1948 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1949 * after the sessions were flushed. 1950 * As the ex_data handling routines might also touch the session cache, 1951 * the most secure solution seems to be: empty (flush) the cache, then 1952 * free ex_data, then finally free the cache. 1953 * (See ticket [openssl.org #212].) 1954 */ 1955 if (a->sessions != NULL) 1956 SSL_CTX_flush_sessions(a, 0); 1957 1958 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1959 1960 if (a->sessions != NULL) 1961 lh_SSL_SESSION_free(a->sessions); 1962 1963 if (a->cert_store != NULL) 1964 X509_STORE_free(a->cert_store); 1965 if (a->cipher_list != NULL) 1966 sk_SSL_CIPHER_free(a->cipher_list); 1967 if (a->cipher_list_by_id != NULL) 1968 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1969 if (a->cert != NULL) 1970 ssl_cert_free(a->cert); 1971 if (a->client_CA != NULL) 1972 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1973 if (a->extra_certs != NULL) 1974 sk_X509_pop_free(a->extra_certs, X509_free); 1975#if 0 /* This should never be done, since it 1976 * removes a global database */ 1977 if (a->comp_methods != NULL) 1978 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1979#else 1980 a->comp_methods = NULL; 1981#endif 1982 1983#ifndef OPENSSL_NO_SRTP 1984 if (a->srtp_profiles) 1985 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1986#endif 1987 1988#ifndef OPENSSL_NO_PSK 1989 if (a->psk_identity_hint) 1990 OPENSSL_free(a->psk_identity_hint); 1991#endif 1992#ifndef OPENSSL_NO_SRP 1993 SSL_CTX_SRP_CTX_free(a); 1994#endif 1995#ifndef OPENSSL_NO_ENGINE 1996 if (a->client_cert_engine) 1997 ENGINE_finish(a->client_cert_engine); 1998#endif 1999 2000#ifndef OPENSSL_NO_BUF_FREELISTS 2001 if (a->wbuf_freelist) 2002 ssl_buf_freelist_free(a->wbuf_freelist); 2003 if (a->rbuf_freelist) 2004 ssl_buf_freelist_free(a->rbuf_freelist); 2005#endif 2006 2007 OPENSSL_free(a); 2008} 2009 2010void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2011{ 2012 ctx->default_passwd_callback = cb; 2013} 2014 2015void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2016{ 2017 ctx->default_passwd_callback_userdata = u; 2018} 2019 2020void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2021 int (*cb) (X509_STORE_CTX *, void *), 2022 void *arg) 2023{ 2024 ctx->app_verify_callback = cb; 2025 ctx->app_verify_arg = arg; 2026} 2027 2028void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2029 int (*cb) (int, X509_STORE_CTX *)) 2030{ 2031 ctx->verify_mode = mode; 2032 ctx->default_verify_callback = cb; 2033} 2034 2035void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2036{ 2037 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2038} 2039 2040void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2041{ 2042 CERT_PKEY *cpk; 2043 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2044 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2045 int rsa_tmp_export, dh_tmp_export, kl; 2046 unsigned long mask_k, mask_a, emask_k, emask_a; 2047#ifndef OPENSSL_NO_ECDSA 2048 int have_ecc_cert, ecdsa_ok, ecc_pkey_size; 2049#endif 2050#ifndef OPENSSL_NO_ECDH 2051 int have_ecdh_tmp, ecdh_ok; 2052#endif 2053#ifndef OPENSSL_NO_EC 2054 X509 *x = NULL; 2055 EVP_PKEY *ecc_pkey = NULL; 2056 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2057#endif 2058 if (c == NULL) 2059 return; 2060 2061 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2062 2063#ifndef OPENSSL_NO_RSA 2064 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2065 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2066 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2067#else 2068 rsa_tmp = rsa_tmp_export = 0; 2069#endif 2070#ifndef OPENSSL_NO_DH 2071 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2072 dh_tmp_export = (c->dh_tmp_cb != NULL || 2073 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2074#else 2075 dh_tmp = dh_tmp_export = 0; 2076#endif 2077 2078#ifndef OPENSSL_NO_ECDH 2079 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2080#endif 2081 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2082 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2083 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2084 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2085 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2086 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2087 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2088 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2089 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2090 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2091 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2092/* FIX THIS EAY EAY EAY */ 2093 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2094 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2095 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2096#ifndef OPENSSL_NO_EC 2097 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2098#endif 2099 mask_k = 0; 2100 mask_a = 0; 2101 emask_k = 0; 2102 emask_a = 0; 2103 2104#ifdef CIPHER_DEBUG 2105 fprintf(stderr, 2106 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2107 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2108 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2109#endif 2110 2111 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2112 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2113 mask_k |= SSL_kGOST; 2114 mask_a |= SSL_aGOST01; 2115 } 2116 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2117 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2118 mask_k |= SSL_kGOST; 2119 mask_a |= SSL_aGOST94; 2120 } 2121 2122 if (rsa_enc || (rsa_tmp && rsa_sign)) 2123 mask_k |= SSL_kRSA; 2124 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2125 emask_k |= SSL_kRSA; 2126 2127#if 0 2128 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2129 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2130 mask_k |= SSL_kEDH; 2131 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2132 (rsa_enc || rsa_sign || dsa_sign)) 2133 emask_k |= SSL_kEDH; 2134#endif 2135 2136 if (dh_tmp_export) 2137 emask_k |= SSL_kEDH; 2138 2139 if (dh_tmp) 2140 mask_k |= SSL_kEDH; 2141 2142 if (dh_rsa) 2143 mask_k |= SSL_kDHr; 2144 if (dh_rsa_export) 2145 emask_k |= SSL_kDHr; 2146 2147 if (dh_dsa) 2148 mask_k |= SSL_kDHd; 2149 if (dh_dsa_export) 2150 emask_k |= SSL_kDHd; 2151 2152 if (rsa_enc || rsa_sign) { 2153 mask_a |= SSL_aRSA; 2154 emask_a |= SSL_aRSA; 2155 } 2156 2157 if (dsa_sign) { 2158 mask_a |= SSL_aDSS; 2159 emask_a |= SSL_aDSS; 2160 } 2161 2162 mask_a |= SSL_aNULL; 2163 emask_a |= SSL_aNULL; 2164 2165#ifndef OPENSSL_NO_KRB5 2166 mask_k |= SSL_kKRB5; 2167 mask_a |= SSL_aKRB5; 2168 emask_k |= SSL_kKRB5; 2169 emask_a |= SSL_aKRB5; 2170#endif 2171 2172 /* 2173 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2174 * depending on the key usage extension. 2175 */ 2176#ifndef OPENSSL_NO_EC 2177 if (have_ecc_cert) { 2178 /* This call populates extension flags (ex_flags) */ 2179 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2180 X509_check_purpose(x, -1, 0); 2181 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2182 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2183 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2184 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2185 ecc_pkey = X509_get_pubkey(x); 2186 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2187 EVP_PKEY_free(ecc_pkey); 2188 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2189 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2190 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2191 } 2192#ifndef OPENSSL_NO_ECDH 2193 if (ecdh_ok) { 2194 2195 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2196 mask_k |= SSL_kECDHr; 2197 mask_a |= SSL_aECDH; 2198 if (ecc_pkey_size <= 163) { 2199 emask_k |= SSL_kECDHr; 2200 emask_a |= SSL_aECDH; 2201 } 2202 } 2203 2204 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2205 mask_k |= SSL_kECDHe; 2206 mask_a |= SSL_aECDH; 2207 if (ecc_pkey_size <= 163) { 2208 emask_k |= SSL_kECDHe; 2209 emask_a |= SSL_aECDH; 2210 } 2211 } 2212 } 2213#endif 2214#ifndef OPENSSL_NO_ECDSA 2215 if (ecdsa_ok) { 2216 mask_a |= SSL_aECDSA; 2217 emask_a |= SSL_aECDSA; 2218 } 2219#endif 2220 } 2221#endif 2222#ifndef OPENSSL_NO_ECDH 2223 if (have_ecdh_tmp) { 2224 mask_k |= SSL_kEECDH; 2225 emask_k |= SSL_kEECDH; 2226 } 2227#endif 2228 2229#ifndef OPENSSL_NO_PSK 2230 mask_k |= SSL_kPSK; 2231 mask_a |= SSL_aPSK; 2232 emask_k |= SSL_kPSK; 2233 emask_a |= SSL_aPSK; 2234#endif 2235 2236 c->mask_k = mask_k; 2237 c->mask_a = mask_a; 2238 c->export_mask_k = emask_k; 2239 c->export_mask_a = emask_a; 2240 c->valid = 1; 2241} 2242 2243/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2244#define ku_reject(x, usage) \ 2245 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2246 2247#ifndef OPENSSL_NO_EC 2248 2249int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2250{ 2251 unsigned long alg_k, alg_a; 2252 EVP_PKEY *pkey = NULL; 2253 int keysize = 0; 2254 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2255 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2256 2257 alg_k = cs->algorithm_mkey; 2258 alg_a = cs->algorithm_auth; 2259 2260 if (SSL_C_IS_EXPORT(cs)) { 2261 /* ECDH key length in export ciphers must be <= 163 bits */ 2262 pkey = X509_get_pubkey(x); 2263 if (pkey == NULL) 2264 return 0; 2265 keysize = EVP_PKEY_bits(pkey); 2266 EVP_PKEY_free(pkey); 2267 if (keysize > 163) 2268 return 0; 2269 } 2270 2271 /* This call populates the ex_flags field correctly */ 2272 X509_check_purpose(x, -1, 0); 2273 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2274 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2275 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2276 } 2277 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2278 /* key usage, if present, must allow key agreement */ 2279 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2280 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2281 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2282 return 0; 2283 } 2284 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2285 /* signature alg must be ECDSA */ 2286 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2287 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2288 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2289 return 0; 2290 } 2291 } 2292 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2293 /* signature alg must be RSA */ 2294 2295 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2296 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2297 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2298 return 0; 2299 } 2300 } 2301 } 2302 if (alg_a & SSL_aECDSA) { 2303 /* key usage, if present, must allow signing */ 2304 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2305 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2306 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2307 return 0; 2308 } 2309 } 2310 2311 return 1; /* all checks are ok */ 2312} 2313 2314#endif 2315 2316/* THIS NEEDS CLEANING UP */ 2317CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2318{ 2319 unsigned long alg_k, alg_a; 2320 CERT *c; 2321 int i; 2322 2323 c = s->cert; 2324 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2325 2326 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2327 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2328 2329 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) { 2330 /* 2331 * we don't need to look at SSL_kEECDH since no certificate is needed 2332 * for anon ECDH and for authenticated EECDH, the check for the auth 2333 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC 2334 * not an RSA cert but for EECDH-RSA we need an RSA cert. Placing the 2335 * checks for SSL_kECDH before RSA checks ensures the correct cert is 2336 * chosen. 2337 */ 2338 i = SSL_PKEY_ECC; 2339 } else if (alg_a & SSL_aECDSA) { 2340 i = SSL_PKEY_ECC; 2341 } else if (alg_k & SSL_kDHr) 2342 i = SSL_PKEY_DH_RSA; 2343 else if (alg_k & SSL_kDHd) 2344 i = SSL_PKEY_DH_DSA; 2345 else if (alg_a & SSL_aDSS) 2346 i = SSL_PKEY_DSA_SIGN; 2347 else if (alg_a & SSL_aRSA) { 2348 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2349 i = SSL_PKEY_RSA_SIGN; 2350 else 2351 i = SSL_PKEY_RSA_ENC; 2352 } else if (alg_a & SSL_aKRB5) { 2353 /* VRS something else here? */ 2354 return (NULL); 2355 } else if (alg_a & SSL_aGOST94) 2356 i = SSL_PKEY_GOST94; 2357 else if (alg_a & SSL_aGOST01) 2358 i = SSL_PKEY_GOST01; 2359 else { /* if (alg_a & SSL_aNULL) */ 2360 2361 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2362 return (NULL); 2363 } 2364 2365 return c->pkeys + i; 2366} 2367 2368X509 *ssl_get_server_send_cert(const SSL *s) 2369{ 2370 CERT_PKEY *cpk; 2371 cpk = ssl_get_server_send_pkey(s); 2372 if (!cpk) 2373 return NULL; 2374 return cpk->x509; 2375} 2376 2377EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2378 const EVP_MD **pmd) 2379{ 2380 unsigned long alg_a; 2381 CERT *c; 2382 int idx = -1; 2383 2384 alg_a = cipher->algorithm_auth; 2385 c = s->cert; 2386 2387 if ((alg_a & SSL_aDSS) && 2388 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2389 idx = SSL_PKEY_DSA_SIGN; 2390 else if (alg_a & SSL_aRSA) { 2391 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2392 idx = SSL_PKEY_RSA_SIGN; 2393 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2394 idx = SSL_PKEY_RSA_ENC; 2395 } else if ((alg_a & SSL_aECDSA) && 2396 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2397 idx = SSL_PKEY_ECC; 2398 if (idx == -1) { 2399 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2400 return (NULL); 2401 } 2402 if (pmd) 2403 *pmd = c->pkeys[idx].digest; 2404 return c->pkeys[idx].privatekey; 2405} 2406 2407void ssl_update_cache(SSL *s, int mode) 2408{ 2409 int i; 2410 2411 /* 2412 * If the session_id_length is 0, we are not supposed to cache it, and it 2413 * would be rather hard to do anyway :-) 2414 */ 2415 if (s->session->session_id_length == 0) 2416 return; 2417 2418 i = s->session_ctx->session_cache_mode; 2419 if ((i & mode) && (!s->hit) 2420 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2421 || SSL_CTX_add_session(s->session_ctx, s->session)) 2422 && (s->session_ctx->new_session_cb != NULL)) { 2423 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2424 if (!s->session_ctx->new_session_cb(s, s->session)) 2425 SSL_SESSION_free(s->session); 2426 } 2427 2428 /* auto flush every 255 connections */ 2429 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2430 if ((((mode & SSL_SESS_CACHE_CLIENT) 2431 ? s->session_ctx->stats.sess_connect_good 2432 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2433 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2434 } 2435 } 2436} 2437 2438const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2439{ 2440 return (s->method); 2441} 2442 2443int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2444{ 2445 int conn = -1; 2446 int ret = 1; 2447 2448 if (s->method != meth) { 2449 if (s->handshake_func != NULL) 2450 conn = (s->handshake_func == s->method->ssl_connect); 2451 2452 if (s->method->version == meth->version) 2453 s->method = meth; 2454 else { 2455 s->method->ssl_free(s); 2456 s->method = meth; 2457 ret = s->method->ssl_new(s); 2458 } 2459 2460 if (conn == 1) 2461 s->handshake_func = meth->ssl_connect; 2462 else if (conn == 0) 2463 s->handshake_func = meth->ssl_accept; 2464 } 2465 return (ret); 2466} 2467 2468int SSL_get_error(const SSL *s, int i) 2469{ 2470 int reason; 2471 unsigned long l; 2472 BIO *bio; 2473 2474 if (i > 0) 2475 return (SSL_ERROR_NONE); 2476 2477 /* 2478 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2479 * where we do encode the error 2480 */ 2481 if ((l = ERR_peek_error()) != 0) { 2482 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2483 return (SSL_ERROR_SYSCALL); 2484 else 2485 return (SSL_ERROR_SSL); 2486 } 2487 2488 if ((i < 0) && SSL_want_read(s)) { 2489 bio = SSL_get_rbio(s); 2490 if (BIO_should_read(bio)) 2491 return (SSL_ERROR_WANT_READ); 2492 else if (BIO_should_write(bio)) 2493 /* 2494 * This one doesn't make too much sense ... We never try to write 2495 * to the rbio, and an application program where rbio and wbio 2496 * are separate couldn't even know what it should wait for. 2497 * However if we ever set s->rwstate incorrectly (so that we have 2498 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2499 * wbio *are* the same, this test works around that bug; so it 2500 * might be safer to keep it. 2501 */ 2502 return (SSL_ERROR_WANT_WRITE); 2503 else if (BIO_should_io_special(bio)) { 2504 reason = BIO_get_retry_reason(bio); 2505 if (reason == BIO_RR_CONNECT) 2506 return (SSL_ERROR_WANT_CONNECT); 2507 else if (reason == BIO_RR_ACCEPT) 2508 return (SSL_ERROR_WANT_ACCEPT); 2509 else 2510 return (SSL_ERROR_SYSCALL); /* unknown */ 2511 } 2512 } 2513 2514 if ((i < 0) && SSL_want_write(s)) { 2515 bio = SSL_get_wbio(s); 2516 if (BIO_should_write(bio)) 2517 return (SSL_ERROR_WANT_WRITE); 2518 else if (BIO_should_read(bio)) 2519 /* 2520 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2521 */ 2522 return (SSL_ERROR_WANT_READ); 2523 else if (BIO_should_io_special(bio)) { 2524 reason = BIO_get_retry_reason(bio); 2525 if (reason == BIO_RR_CONNECT) 2526 return (SSL_ERROR_WANT_CONNECT); 2527 else if (reason == BIO_RR_ACCEPT) 2528 return (SSL_ERROR_WANT_ACCEPT); 2529 else 2530 return (SSL_ERROR_SYSCALL); 2531 } 2532 } 2533 if ((i < 0) && SSL_want_x509_lookup(s)) { 2534 return (SSL_ERROR_WANT_X509_LOOKUP); 2535 } 2536 2537 if (i == 0) { 2538 if (s->version == SSL2_VERSION) { 2539 /* assume it is the socket being closed */ 2540 return (SSL_ERROR_ZERO_RETURN); 2541 } else { 2542 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2543 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2544 return (SSL_ERROR_ZERO_RETURN); 2545 } 2546 } 2547 return (SSL_ERROR_SYSCALL); 2548} 2549 2550int SSL_do_handshake(SSL *s) 2551{ 2552 int ret = 1; 2553 2554 if (s->handshake_func == NULL) { 2555 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2556 return (-1); 2557 } 2558 2559 s->method->ssl_renegotiate_check(s); 2560 2561 if (SSL_in_init(s) || SSL_in_before(s)) { 2562 ret = s->handshake_func(s); 2563 } 2564 return (ret); 2565} 2566 2567/* 2568 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2569 * calls will reset it 2570 */ 2571void SSL_set_accept_state(SSL *s) 2572{ 2573 s->server = 1; 2574 s->shutdown = 0; 2575 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2576 s->handshake_func = s->method->ssl_accept; 2577 /* clear the current cipher */ 2578 ssl_clear_cipher_ctx(s); 2579 ssl_clear_hash_ctx(&s->read_hash); 2580 ssl_clear_hash_ctx(&s->write_hash); 2581} 2582 2583void SSL_set_connect_state(SSL *s) 2584{ 2585 s->server = 0; 2586 s->shutdown = 0; 2587 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2588 s->handshake_func = s->method->ssl_connect; 2589 /* clear the current cipher */ 2590 ssl_clear_cipher_ctx(s); 2591 ssl_clear_hash_ctx(&s->read_hash); 2592 ssl_clear_hash_ctx(&s->write_hash); 2593} 2594 2595int ssl_undefined_function(SSL *s) 2596{ 2597 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2598 return (0); 2599} 2600 2601int ssl_undefined_void_function(void) 2602{ 2603 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2604 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2605 return (0); 2606} 2607 2608int ssl_undefined_const_function(const SSL *s) 2609{ 2610 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2611 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2612 return (0); 2613} 2614 2615SSL_METHOD *ssl_bad_method(int ver) 2616{ 2617 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2618 return (NULL); 2619} 2620 2621const char *SSL_get_version(const SSL *s) 2622{ 2623 if (s->version == TLS1_2_VERSION) 2624 return ("TLSv1.2"); 2625 else if (s->version == TLS1_1_VERSION) 2626 return ("TLSv1.1"); 2627 else if (s->version == TLS1_VERSION) 2628 return ("TLSv1"); 2629 else if (s->version == SSL3_VERSION) 2630 return ("SSLv3"); 2631 else if (s->version == SSL2_VERSION) 2632 return ("SSLv2"); 2633 else 2634 return ("unknown"); 2635} 2636 2637SSL *SSL_dup(SSL *s) 2638{ 2639 STACK_OF(X509_NAME) *sk; 2640 X509_NAME *xn; 2641 SSL *ret; 2642 int i; 2643 2644 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2645 return (NULL); 2646 2647 ret->version = s->version; 2648 ret->type = s->type; 2649 ret->method = s->method; 2650 2651 if (s->session != NULL) { 2652 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2653 SSL_copy_session_id(ret, s); 2654 } else { 2655 /* 2656 * No session has been established yet, so we have to expect that 2657 * s->cert or ret->cert will be changed later -- they should not both 2658 * point to the same object, and thus we can't use 2659 * SSL_copy_session_id. 2660 */ 2661 2662 ret->method->ssl_free(ret); 2663 ret->method = s->method; 2664 ret->method->ssl_new(ret); 2665 2666 if (s->cert != NULL) { 2667 if (ret->cert != NULL) { 2668 ssl_cert_free(ret->cert); 2669 } 2670 ret->cert = ssl_cert_dup(s->cert); 2671 if (ret->cert == NULL) 2672 goto err; 2673 } 2674 2675 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2676 } 2677 2678 ret->options = s->options; 2679 ret->mode = s->mode; 2680 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2681 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2682 ret->msg_callback = s->msg_callback; 2683 ret->msg_callback_arg = s->msg_callback_arg; 2684 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2685 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2686 ret->generate_session_id = s->generate_session_id; 2687 2688 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2689 2690 ret->debug = s->debug; 2691 2692 /* copy app data, a little dangerous perhaps */ 2693 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2694 goto err; 2695 2696 /* setup rbio, and wbio */ 2697 if (s->rbio != NULL) { 2698 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2699 goto err; 2700 } 2701 if (s->wbio != NULL) { 2702 if (s->wbio != s->rbio) { 2703 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2704 goto err; 2705 } else 2706 ret->wbio = ret->rbio; 2707 } 2708 ret->rwstate = s->rwstate; 2709 ret->in_handshake = s->in_handshake; 2710 ret->handshake_func = s->handshake_func; 2711 ret->server = s->server; 2712 ret->renegotiate = s->renegotiate; 2713 ret->new_session = s->new_session; 2714 ret->quiet_shutdown = s->quiet_shutdown; 2715 ret->shutdown = s->shutdown; 2716 ret->state = s->state; /* SSL_dup does not really work at any state, 2717 * though */ 2718 ret->rstate = s->rstate; 2719 ret->init_num = 0; /* would have to copy ret->init_buf, 2720 * ret->init_msg, ret->init_num, 2721 * ret->init_off */ 2722 ret->hit = s->hit; 2723 2724 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2725 2726 /* dup the cipher_list and cipher_list_by_id stacks */ 2727 if (s->cipher_list != NULL) { 2728 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2729 goto err; 2730 } 2731 if (s->cipher_list_by_id != NULL) 2732 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2733 == NULL) 2734 goto err; 2735 2736 /* Dup the client_CA list */ 2737 if (s->client_CA != NULL) { 2738 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2739 goto err; 2740 ret->client_CA = sk; 2741 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2742 xn = sk_X509_NAME_value(sk, i); 2743 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2744 X509_NAME_free(xn); 2745 goto err; 2746 } 2747 } 2748 } 2749 2750 if (0) { 2751 err: 2752 if (ret != NULL) 2753 SSL_free(ret); 2754 ret = NULL; 2755 } 2756 return (ret); 2757} 2758 2759void ssl_clear_cipher_ctx(SSL *s) 2760{ 2761 if (s->enc_read_ctx != NULL) { 2762 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2763 OPENSSL_free(s->enc_read_ctx); 2764 s->enc_read_ctx = NULL; 2765 } 2766 if (s->enc_write_ctx != NULL) { 2767 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2768 OPENSSL_free(s->enc_write_ctx); 2769 s->enc_write_ctx = NULL; 2770 } 2771#ifndef OPENSSL_NO_COMP 2772 if (s->expand != NULL) { 2773 COMP_CTX_free(s->expand); 2774 s->expand = NULL; 2775 } 2776 if (s->compress != NULL) { 2777 COMP_CTX_free(s->compress); 2778 s->compress = NULL; 2779 } 2780#endif 2781} 2782 2783/* Fix this function so that it takes an optional type parameter */ 2784X509 *SSL_get_certificate(const SSL *s) 2785{ 2786 if (s->cert != NULL) 2787 return (s->cert->key->x509); 2788 else 2789 return (NULL); 2790} 2791 2792/* Fix this function so that it takes an optional type parameter */ 2793EVP_PKEY *SSL_get_privatekey(SSL *s) 2794{ 2795 if (s->cert != NULL) 2796 return (s->cert->key->privatekey); 2797 else 2798 return (NULL); 2799} 2800 2801const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2802{ 2803 if ((s->session != NULL) && (s->session->cipher != NULL)) 2804 return (s->session->cipher); 2805 return (NULL); 2806} 2807 2808#ifdef OPENSSL_NO_COMP 2809const void *SSL_get_current_compression(SSL *s) 2810{ 2811 return NULL; 2812} 2813 2814const void *SSL_get_current_expansion(SSL *s) 2815{ 2816 return NULL; 2817} 2818#else 2819 2820const COMP_METHOD *SSL_get_current_compression(SSL *s) 2821{ 2822 if (s->compress != NULL) 2823 return (s->compress->meth); 2824 return (NULL); 2825} 2826 2827const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2828{ 2829 if (s->expand != NULL) 2830 return (s->expand->meth); 2831 return (NULL); 2832} 2833#endif 2834 2835int ssl_init_wbio_buffer(SSL *s, int push) 2836{ 2837 BIO *bbio; 2838 2839 if (s->bbio == NULL) { 2840 bbio = BIO_new(BIO_f_buffer()); 2841 if (bbio == NULL) 2842 return (0); 2843 s->bbio = bbio; 2844 } else { 2845 bbio = s->bbio; 2846 if (s->bbio == s->wbio) 2847 s->wbio = BIO_pop(s->wbio); 2848 } 2849 (void)BIO_reset(bbio); 2850/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2851 if (!BIO_set_read_buffer_size(bbio, 1)) { 2852 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2853 return (0); 2854 } 2855 if (push) { 2856 if (s->wbio != bbio) 2857 s->wbio = BIO_push(bbio, s->wbio); 2858 } else { 2859 if (s->wbio == bbio) 2860 s->wbio = BIO_pop(bbio); 2861 } 2862 return (1); 2863} 2864 2865void ssl_free_wbio_buffer(SSL *s) 2866{ 2867 if (s->bbio == NULL) 2868 return; 2869 2870 if (s->bbio == s->wbio) { 2871 /* remove buffering */ 2872 s->wbio = BIO_pop(s->wbio); 2873#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 2874 * adding one more preprocessor symbol */ 2875 assert(s->wbio != NULL); 2876#endif 2877 } 2878 BIO_free(s->bbio); 2879 s->bbio = NULL; 2880} 2881 2882void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2883{ 2884 ctx->quiet_shutdown = mode; 2885} 2886 2887int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2888{ 2889 return (ctx->quiet_shutdown); 2890} 2891 2892void SSL_set_quiet_shutdown(SSL *s, int mode) 2893{ 2894 s->quiet_shutdown = mode; 2895} 2896 2897int SSL_get_quiet_shutdown(const SSL *s) 2898{ 2899 return (s->quiet_shutdown); 2900} 2901 2902void SSL_set_shutdown(SSL *s, int mode) 2903{ 2904 s->shutdown = mode; 2905} 2906 2907int SSL_get_shutdown(const SSL *s) 2908{ 2909 return (s->shutdown); 2910} 2911 2912int SSL_version(const SSL *s) 2913{ 2914 return (s->version); 2915} 2916 2917SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2918{ 2919 return (ssl->ctx); 2920} 2921 2922SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 2923{ 2924 CERT *ocert = ssl->cert; 2925 if (ssl->ctx == ctx) 2926 return ssl->ctx; 2927#ifndef OPENSSL_NO_TLSEXT 2928 if (ctx == NULL) 2929 ctx = ssl->initial_ctx; 2930#endif 2931 ssl->cert = ssl_cert_dup(ctx->cert); 2932 if (ocert != NULL) { 2933 int i; 2934 /* Copy negotiated digests from original */ 2935 for (i = 0; i < SSL_PKEY_NUM; i++) { 2936 CERT_PKEY *cpk = ocert->pkeys + i; 2937 CERT_PKEY *rpk = ssl->cert->pkeys + i; 2938 rpk->digest = cpk->digest; 2939 } 2940 ssl_cert_free(ocert); 2941 } 2942 2943 /* 2944 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 2945 * so setter APIs must prevent invalid lengths from entering the system. 2946 */ 2947 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 2948 2949 /* 2950 * If the session ID context matches that of the parent SSL_CTX, 2951 * inherit it from the new SSL_CTX as well. If however the context does 2952 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 2953 * leave it unchanged. 2954 */ 2955 if ((ssl->ctx != NULL) && 2956 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 2957 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 2958 ssl->sid_ctx_length = ctx->sid_ctx_length; 2959 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 2960 } 2961 2962 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2963 if (ssl->ctx != NULL) 2964 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2965 ssl->ctx = ctx; 2966 2967 return (ssl->ctx); 2968} 2969 2970#ifndef OPENSSL_NO_STDIO 2971int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2972{ 2973 return (X509_STORE_set_default_paths(ctx->cert_store)); 2974} 2975 2976int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2977 const char *CApath) 2978{ 2979 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2980} 2981#endif 2982 2983void SSL_set_info_callback(SSL *ssl, 2984 void (*cb) (const SSL *ssl, int type, int val)) 2985{ 2986 ssl->info_callback = cb; 2987} 2988 2989/* 2990 * One compiler (Diab DCC) doesn't like argument names in returned function 2991 * pointer. 2992 */ 2993void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 2994 int /* type */ , 2995 int /* val */ ) { 2996 return ssl->info_callback; 2997} 2998 2999int SSL_state(const SSL *ssl) 3000{ 3001 return (ssl->state); 3002} 3003 3004void SSL_set_state(SSL *ssl, int state) 3005{ 3006 ssl->state = state; 3007} 3008 3009void SSL_set_verify_result(SSL *ssl, long arg) 3010{ 3011 ssl->verify_result = arg; 3012} 3013 3014long SSL_get_verify_result(const SSL *ssl) 3015{ 3016 return (ssl->verify_result); 3017} 3018 3019int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3020 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3021{ 3022 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3023 new_func, dup_func, free_func); 3024} 3025 3026int SSL_set_ex_data(SSL *s, int idx, void *arg) 3027{ 3028 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3029} 3030 3031void *SSL_get_ex_data(const SSL *s, int idx) 3032{ 3033 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3034} 3035 3036int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3037 CRYPTO_EX_dup *dup_func, 3038 CRYPTO_EX_free *free_func) 3039{ 3040 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3041 new_func, dup_func, free_func); 3042} 3043 3044int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3045{ 3046 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3047} 3048 3049void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3050{ 3051 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3052} 3053 3054int ssl_ok(SSL *s) 3055{ 3056 return (1); 3057} 3058 3059X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3060{ 3061 return (ctx->cert_store); 3062} 3063 3064void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3065{ 3066 if (ctx->cert_store != NULL) 3067 X509_STORE_free(ctx->cert_store); 3068 ctx->cert_store = store; 3069} 3070 3071int SSL_want(const SSL *s) 3072{ 3073 return (s->rwstate); 3074} 3075 3076/** 3077 * \brief Set the callback for generating temporary RSA keys. 3078 * \param ctx the SSL context. 3079 * \param cb the callback 3080 */ 3081 3082#ifndef OPENSSL_NO_RSA 3083void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3084 int is_export, 3085 int keylength)) 3086{ 3087 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3088} 3089 3090void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3091 int is_export, 3092 int keylength)) 3093{ 3094 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3095} 3096#endif 3097 3098#ifdef DOXYGEN 3099/** 3100 * \brief The RSA temporary key callback function. 3101 * \param ssl the SSL session. 3102 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3103 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3104 * of the required key in bits. 3105 * \return the temporary RSA key. 3106 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3107 */ 3108 3109RSA *cb(SSL *ssl, int is_export, int keylength) 3110{ 3111} 3112#endif 3113 3114/** 3115 * \brief Set the callback for generating temporary DH keys. 3116 * \param ctx the SSL context. 3117 * \param dh the callback 3118 */ 3119 3120#ifndef OPENSSL_NO_DH 3121void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3122 DH *(*dh) (SSL *ssl, int is_export, 3123 int keylength)) 3124{ 3125 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3126} 3127 3128void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3129 int keylength)) 3130{ 3131 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3132} 3133#endif 3134 3135#ifndef OPENSSL_NO_ECDH 3136void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3137 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3138 int keylength)) 3139{ 3140 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3141 (void (*)(void))ecdh); 3142} 3143 3144void SSL_set_tmp_ecdh_callback(SSL *ssl, 3145 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3146 int keylength)) 3147{ 3148 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3149} 3150#endif 3151 3152#ifndef OPENSSL_NO_PSK 3153int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3154{ 3155 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3156 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3157 SSL_R_DATA_LENGTH_TOO_LONG); 3158 return 0; 3159 } 3160 if (ctx->psk_identity_hint != NULL) 3161 OPENSSL_free(ctx->psk_identity_hint); 3162 if (identity_hint != NULL) { 3163 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3164 if (ctx->psk_identity_hint == NULL) 3165 return 0; 3166 } else 3167 ctx->psk_identity_hint = NULL; 3168 return 1; 3169} 3170 3171int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3172{ 3173 if (s == NULL) 3174 return 0; 3175 3176 if (s->session == NULL) 3177 return 1; /* session not created yet, ignored */ 3178 3179 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3180 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3181 return 0; 3182 } 3183 if (s->session->psk_identity_hint != NULL) 3184 OPENSSL_free(s->session->psk_identity_hint); 3185 if (identity_hint != NULL) { 3186 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3187 if (s->session->psk_identity_hint == NULL) 3188 return 0; 3189 } else 3190 s->session->psk_identity_hint = NULL; 3191 return 1; 3192} 3193 3194const char *SSL_get_psk_identity_hint(const SSL *s) 3195{ 3196 if (s == NULL || s->session == NULL) 3197 return NULL; 3198 return (s->session->psk_identity_hint); 3199} 3200 3201const char *SSL_get_psk_identity(const SSL *s) 3202{ 3203 if (s == NULL || s->session == NULL) 3204 return NULL; 3205 return (s->session->psk_identity); 3206} 3207 3208void SSL_set_psk_client_callback(SSL *s, 3209 unsigned int (*cb) (SSL *ssl, 3210 const char *hint, 3211 char *identity, 3212 unsigned int 3213 max_identity_len, 3214 unsigned char *psk, 3215 unsigned int 3216 max_psk_len)) 3217{ 3218 s->psk_client_callback = cb; 3219} 3220 3221void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3222 unsigned int (*cb) (SSL *ssl, 3223 const char *hint, 3224 char *identity, 3225 unsigned int 3226 max_identity_len, 3227 unsigned char *psk, 3228 unsigned int 3229 max_psk_len)) 3230{ 3231 ctx->psk_client_callback = cb; 3232} 3233 3234void SSL_set_psk_server_callback(SSL *s, 3235 unsigned int (*cb) (SSL *ssl, 3236 const char *identity, 3237 unsigned char *psk, 3238 unsigned int 3239 max_psk_len)) 3240{ 3241 s->psk_server_callback = cb; 3242} 3243 3244void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3245 unsigned int (*cb) (SSL *ssl, 3246 const char *identity, 3247 unsigned char *psk, 3248 unsigned int 3249 max_psk_len)) 3250{ 3251 ctx->psk_server_callback = cb; 3252} 3253#endif 3254 3255void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3256 void (*cb) (int write_p, int version, 3257 int content_type, const void *buf, 3258 size_t len, SSL *ssl, void *arg)) 3259{ 3260 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3261} 3262 3263void SSL_set_msg_callback(SSL *ssl, 3264 void (*cb) (int write_p, int version, 3265 int content_type, const void *buf, 3266 size_t len, SSL *ssl, void *arg)) 3267{ 3268 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3269} 3270 3271/* 3272 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3273 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3274 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3275 * allocated ctx; 3276 */ 3277 3278EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3279{ 3280 ssl_clear_hash_ctx(hash); 3281 *hash = EVP_MD_CTX_create(); 3282 if (md) 3283 EVP_DigestInit_ex(*hash, md, NULL); 3284 return *hash; 3285} 3286 3287void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3288{ 3289 3290 if (*hash) 3291 EVP_MD_CTX_destroy(*hash); 3292 *hash = NULL; 3293} 3294 3295void SSL_set_debug(SSL *s, int debug) 3296{ 3297 s->debug = debug; 3298} 3299 3300int SSL_cache_hit(SSL *s) 3301{ 3302 return s->hit; 3303} 3304 3305#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3306# include "../crypto/bio/bss_file.c" 3307#endif 3308 3309IMPLEMENT_STACK_OF(SSL_CIPHER) 3310IMPLEMENT_STACK_OF(SSL_COMP) 3311IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3312