ssl_lib.c revision 1.50
1/*! \file ssl/ssl_lib.c 2 * \brief Version independent SSL functions. 3 */ 4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay@cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay@cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60/* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core@openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay@cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh@cryptsoft.com). 111 * 112 */ 113/* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118/* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145#include <stdio.h> 146#include "ssl_locl.h" 147#include <openssl/objects.h> 148#include <openssl/lhash.h> 149#include <openssl/x509v3.h> 150#include <openssl/rand.h> 151#include <openssl/ocsp.h> 152#ifndef OPENSSL_NO_DH 153#include <openssl/dh.h> 154#endif 155#ifndef OPENSSL_NO_ENGINE 156#include <openssl/engine.h> 157#endif 158 159const char *SSL_version_str = OPENSSL_VERSION_TEXT; 160 161SSL3_ENC_METHOD ssl3_undef_enc_method = { 162 /* 163 * Evil casts, but these functions are only called if there's a 164 * library bug. 165 */ 166 .enc = (int (*)(SSL *, int))ssl_undefined_function, 167 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 168 .setup_key_block = ssl_undefined_function, 169 .generate_master_secret = (int (*)(SSL *, unsigned char *, 170 unsigned char *, int))ssl_undefined_function, 171 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 172 .final_finish_mac = (int (*)(SSL *, const char*, int, 173 unsigned char *))ssl_undefined_function, 174 .finish_mac_length = 0, 175 .cert_verify_mac = (int (*)(SSL *, int, 176 unsigned char *))ssl_undefined_function, 177 .client_finished_label = NULL, 178 .client_finished_label_len = 0, 179 .server_finished_label = NULL, 180 .server_finished_label_len = 0, 181 .alert_value = (int (*)(int))ssl_undefined_function, 182 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 183 const char *, size_t, const unsigned char *, size_t, 184 int use_context))ssl_undefined_function, 185}; 186 187int 188SSL_clear(SSL *s) 189{ 190 if (s->method == NULL) { 191 SSLerr(SSL_F_SSL_CLEAR, 192 SSL_R_NO_METHOD_SPECIFIED); 193 return (0); 194 } 195 196 if (ssl_clear_bad_session(s)) { 197 SSL_SESSION_free(s->session); 198 s->session = NULL; 199 } 200 201 s->error = 0; 202 s->hit = 0; 203 s->shutdown = 0; 204 205 if (s->renegotiate) { 206 SSLerr(SSL_F_SSL_CLEAR, 207 ERR_R_INTERNAL_ERROR); 208 return (0); 209 } 210 211 s->type = 0; 212 213 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 s->version = s->method->version; 216 s->client_version = s->version; 217 s->rwstate = SSL_NOTHING; 218 s->rstate = SSL_ST_READ_HEADER; 219#if 0 220 s->read_ahead = s->ctx->read_ahead; 221#endif 222 223 if (s->init_buf != NULL) { 224 BUF_MEM_free(s->init_buf); 225 s->init_buf = NULL; 226 } 227 228 ssl_clear_cipher_ctx(s); 229 ssl_clear_hash_ctx(&s->read_hash); 230 ssl_clear_hash_ctx(&s->write_hash); 231 232 s->first_packet = 0; 233 234#if 1 235 /* 236 * Check to see if we were changed into a different method, if 237 * so, revert back if we are not doing session-id reuse. 238 */ 239 if (!s->in_handshake && (s->session == NULL) && 240 (s->method != s->ctx->method)) { 241 s->method->ssl_free(s); 242 s->method = s->ctx->method; 243 if (!s->method->ssl_new(s)) 244 return (0); 245 } else 246#endif 247 s->method->ssl_clear(s); 248 return (1); 249} 250 251/* Used to change an SSL_CTXs default SSL method type */ 252int 253SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 254{ 255 STACK_OF(SSL_CIPHER) *sk; 256 257 ctx->method = meth; 258 259 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 260 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 261 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 262 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 263 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 264 return (0); 265 } 266 return (1); 267} 268 269SSL * 270SSL_new(SSL_CTX *ctx) 271{ 272 SSL *s; 273 274 if (ctx == NULL) { 275 SSLerr(SSL_F_SSL_NEW, 276 SSL_R_NULL_SSL_CTX); 277 return (NULL); 278 } 279 if (ctx->method == NULL) { 280 SSLerr(SSL_F_SSL_NEW, 281 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 282 return (NULL); 283 } 284 285 s = calloc(1, sizeof(SSL)); 286 if (s == NULL) 287 goto err; 288 289 290 s->options = ctx->options; 291 s->mode = ctx->mode; 292 s->max_cert_list = ctx->max_cert_list; 293 294 if (ctx->cert != NULL) { 295 /* 296 * Earlier library versions used to copy the pointer to 297 * the CERT, not its contents; only when setting new 298 * parameters for the per-SSL copy, ssl_cert_new would be 299 * called (and the direct reference to the per-SSL_CTX 300 * settings would be lost, but those still were indirectly 301 * accessed for various purposes, and for that reason they 302 * used to be known as s->ctx->default_cert). 303 * Now we don't look at the SSL_CTX's CERT after having 304 * duplicated it once. 305 */ 306 s->cert = ssl_cert_dup(ctx->cert); 307 if (s->cert == NULL) 308 goto err; 309 } else 310 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 311 312 s->read_ahead = ctx->read_ahead; 313 s->msg_callback = ctx->msg_callback; 314 s->msg_callback_arg = ctx->msg_callback_arg; 315 s->verify_mode = ctx->verify_mode; 316#if 0 317 s->verify_depth = ctx->verify_depth; 318#endif 319 s->sid_ctx_length = ctx->sid_ctx_length; 320 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 321 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 322 s->verify_callback = ctx->default_verify_callback; 323 s->generate_session_id = ctx->generate_session_id; 324 325 s->param = X509_VERIFY_PARAM_new(); 326 if (!s->param) 327 goto err; 328 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 329#if 0 330 s->purpose = ctx->purpose; 331 s->trust = ctx->trust; 332#endif 333 s->quiet_shutdown = ctx->quiet_shutdown; 334 s->max_send_fragment = ctx->max_send_fragment; 335 336 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 337 s->ctx = ctx; 338#ifndef OPENSSL_NO_TLSEXT 339 s->tlsext_debug_cb = 0; 340 s->tlsext_debug_arg = NULL; 341 s->tlsext_ticket_expected = 0; 342 s->tlsext_status_type = -1; 343 s->tlsext_status_expected = 0; 344 s->tlsext_ocsp_ids = NULL; 345 s->tlsext_ocsp_exts = NULL; 346 s->tlsext_ocsp_resp = NULL; 347 s->tlsext_ocsp_resplen = -1; 348 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 349 s->initial_ctx = ctx; 350# ifndef OPENSSL_NO_NEXTPROTONEG 351 s->next_proto_negotiated = NULL; 352# endif 353#endif 354 355 s->verify_result = X509_V_OK; 356 357 s->method = ctx->method; 358 359 if (!s->method->ssl_new(s)) 360 goto err; 361 362 s->references = 1; 363 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 364 365 SSL_clear(s); 366 367 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 368 369#ifndef OPENSSL_NO_PSK 370 s->psk_client_callback = ctx->psk_client_callback; 371 s->psk_server_callback = ctx->psk_server_callback; 372#endif 373 374 return (s); 375 err: 376 if (s != NULL) { 377 if (s->cert != NULL) 378 ssl_cert_free(s->cert); 379 if (s->ctx != NULL) 380 SSL_CTX_free(s->ctx); /* decrement reference count */ 381 free(s); 382 } 383 SSLerr(SSL_F_SSL_NEW, 384 ERR_R_MALLOC_FAILURE); 385 return (NULL); 386} 387 388int 389SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 390 unsigned int sid_ctx_len) 391{ 392 if (sid_ctx_len > sizeof ctx->sid_ctx) { 393 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 394 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 395 return (0); 396 } 397 ctx->sid_ctx_length = sid_ctx_len; 398 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 399 400 return (1); 401} 402 403int 404SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 405 unsigned int sid_ctx_len) 406{ 407 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 408 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 409 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 410 return (0); 411 } 412 ssl->sid_ctx_length = sid_ctx_len; 413 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 414 415 return (1); 416} 417 418int 419SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 420{ 421 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 422 ctx->generate_session_id = cb; 423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 424 return (1); 425} 426 427int 428SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 429{ 430 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 431 ssl->generate_session_id = cb; 432 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 433 return (1); 434} 435 436int 437SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 438 unsigned int id_len) 439{ 440 /* 441 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 442 * shows how we can "construct" a session to give us the desired 443 * check - ie. to find if there's a session in the hash table 444 * that would conflict with any new session built out of this 445 * id/id_len and the ssl_version in use by this SSL. 446 */ 447 SSL_SESSION r, *p; 448 449 if (id_len > sizeof r.session_id) 450 return (0); 451 452 r.ssl_version = ssl->version; 453 r.session_id_length = id_len; 454 memcpy(r.session_id, id, id_len); 455 456 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 457 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 458 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 459 return (p != NULL); 460} 461 462int 463SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 464{ 465 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 466} 467 468int 469SSL_set_purpose(SSL *s, int purpose) 470{ 471 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 472} 473 474int 475SSL_CTX_set_trust(SSL_CTX *s, int trust) 476{ 477 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 478} 479 480int 481SSL_set_trust(SSL *s, int trust) 482{ 483 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 484} 485 486int 487SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 488{ 489 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 490} 491 492int 493SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 494{ 495 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 496} 497 498void 499SSL_free(SSL *s) 500{ 501 int i; 502 503 if (s == NULL) 504 return; 505 506 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 507 if (i > 0) 508 return; 509 510 if (s->param) 511 X509_VERIFY_PARAM_free(s->param); 512 513 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 514 515 if (s->bbio != NULL) { 516 /* If the buffering BIO is in place, pop it off */ 517 if (s->bbio == s->wbio) { 518 s->wbio = BIO_pop(s->wbio); 519 } 520 BIO_free(s->bbio); 521 s->bbio = NULL; 522 } 523 if (s->rbio != NULL) 524 BIO_free_all(s->rbio); 525 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 526 BIO_free_all(s->wbio); 527 528 if (s->init_buf != NULL) 529 BUF_MEM_free(s->init_buf); 530 531 /* add extra stuff */ 532 if (s->cipher_list != NULL) 533 sk_SSL_CIPHER_free(s->cipher_list); 534 if (s->cipher_list_by_id != NULL) 535 sk_SSL_CIPHER_free(s->cipher_list_by_id); 536 537 /* Make the next call work :-) */ 538 if (s->session != NULL) { 539 ssl_clear_bad_session(s); 540 SSL_SESSION_free(s->session); 541 } 542 543 ssl_clear_cipher_ctx(s); 544 ssl_clear_hash_ctx(&s->read_hash); 545 ssl_clear_hash_ctx(&s->write_hash); 546 547 if (s->cert != NULL) 548 ssl_cert_free(s->cert); 549 /* Free up if allocated */ 550 551#ifndef OPENSSL_NO_TLSEXT 552 free(s->tlsext_hostname); 553 if (s->initial_ctx) 554 SSL_CTX_free(s->initial_ctx); 555#ifndef OPENSSL_NO_EC 556 free(s->tlsext_ecpointformatlist); 557 free(s->tlsext_ellipticcurvelist); 558#endif /* OPENSSL_NO_EC */ 559 free(s->tlsext_opaque_prf_input); 560 if (s->tlsext_ocsp_exts) 561 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 562 X509_EXTENSION_free); 563 if (s->tlsext_ocsp_ids) 564 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 565 free(s->tlsext_ocsp_resp); 566#endif 567 568 if (s->client_CA != NULL) 569 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 570 571 if (s->method != NULL) 572 s->method->ssl_free(s); 573 574 if (s->ctx) 575 SSL_CTX_free(s->ctx); 576 577 578#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 579 free(s->next_proto_negotiated); 580#endif 581 582#ifndef OPENSSL_NO_SRTP 583 if (s->srtp_profiles) 584 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 585#endif 586 587 free(s); 588} 589 590void 591SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 592{ 593 /* If the output buffering BIO is still in place, remove it */ 594 if (s->bbio != NULL) { 595 if (s->wbio == s->bbio) { 596 s->wbio = s->wbio->next_bio; 597 s->bbio->next_bio = NULL; 598 } 599 } 600 if ((s->rbio != NULL) && (s->rbio != rbio)) 601 BIO_free_all(s->rbio); 602 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 603 BIO_free_all(s->wbio); 604 s->rbio = rbio; 605 s->wbio = wbio; 606} 607 608BIO * 609SSL_get_rbio(const SSL *s) 610{ 611 return (s->rbio); 612} 613 614BIO * 615SSL_get_wbio(const SSL *s) 616{ 617 return (s->wbio); 618} 619 620int 621SSL_get_fd(const SSL *s) 622{ 623 return (SSL_get_rfd(s)); 624} 625 626int 627SSL_get_rfd(const SSL *s) 628{ 629 int ret = -1; 630 BIO *b, *r; 631 632 b = SSL_get_rbio(s); 633 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 634 if (r != NULL) 635 BIO_get_fd(r, &ret); 636 return (ret); 637} 638 639int 640SSL_get_wfd(const SSL *s) 641{ 642 int ret = -1; 643 BIO *b, *r; 644 645 b = SSL_get_wbio(s); 646 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 647 if (r != NULL) 648 BIO_get_fd(r, &ret); 649 return (ret); 650} 651 652int 653SSL_set_fd(SSL *s, int fd) 654{ 655 int ret = 0; 656 BIO *bio = NULL; 657 658 bio = BIO_new(BIO_s_socket()); 659 660 if (bio == NULL) { 661 SSLerr(SSL_F_SSL_SET_FD, 662 ERR_R_BUF_LIB); 663 goto err; 664 } 665 BIO_set_fd(bio, fd, BIO_NOCLOSE); 666 SSL_set_bio(s, bio, bio); 667 ret = 1; 668 err: 669 return (ret); 670} 671 672int 673SSL_set_wfd(SSL *s, int fd) 674{ 675 int ret = 0; 676 BIO *bio = NULL; 677 678 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 679 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 680 bio = BIO_new(BIO_s_socket()); 681 682 if (bio == NULL) { 683 SSLerr(SSL_F_SSL_SET_WFD, 684 ERR_R_BUF_LIB); 685 goto err; 686 } 687 BIO_set_fd(bio, fd, BIO_NOCLOSE); 688 SSL_set_bio(s, SSL_get_rbio(s), bio); 689 } else 690 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 691 ret = 1; 692 err: 693 return (ret); 694} 695 696int 697SSL_set_rfd(SSL *s, int fd) 698{ 699 int ret = 0; 700 BIO *bio = NULL; 701 702 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 703 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 704 bio = BIO_new(BIO_s_socket()); 705 706 if (bio == NULL) { 707 SSLerr(SSL_F_SSL_SET_RFD, 708 ERR_R_BUF_LIB); 709 goto err; 710 } 711 BIO_set_fd(bio, fd, BIO_NOCLOSE); 712 SSL_set_bio(s, bio, SSL_get_wbio(s)); 713 } else 714 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 715 ret = 1; 716 err: 717 return (ret); 718} 719 720 721/* return length of latest Finished message we sent, copy to 'buf' */ 722size_t 723SSL_get_finished(const SSL *s, void *buf, size_t count) 724{ 725 size_t ret = 0; 726 727 if (s->s3 != NULL) { 728 ret = s->s3->tmp.finish_md_len; 729 if (count > ret) 730 count = ret; 731 memcpy(buf, s->s3->tmp.finish_md, count); 732 } 733 return (ret); 734} 735 736/* return length of latest Finished message we expected, copy to 'buf' */ 737size_t 738SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 739{ 740 size_t ret = 0; 741 742 if (s->s3 != NULL) { 743 ret = s->s3->tmp.peer_finish_md_len; 744 if (count > ret) 745 count = ret; 746 memcpy(buf, s->s3->tmp.peer_finish_md, count); 747 } 748 return (ret); 749} 750 751 752int 753SSL_get_verify_mode(const SSL *s) 754{ 755 return (s->verify_mode); 756} 757 758int 759SSL_get_verify_depth(const SSL *s) 760{ 761 return (X509_VERIFY_PARAM_get_depth(s->param)); 762} 763 764int 765(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 766{ 767 return (s->verify_callback); 768} 769 770int 771SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 772{ 773 return (ctx->verify_mode); 774} 775 776int 777SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 778{ 779 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 780} 781 782int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 783{ 784 return (ctx->default_verify_callback); 785} 786 787void 788SSL_set_verify(SSL *s, int mode, 789 int (*callback)(int ok, X509_STORE_CTX *ctx)) 790{ 791 s->verify_mode = mode; 792 if (callback != NULL) 793 s->verify_callback = callback; 794} 795 796void 797SSL_set_verify_depth(SSL *s, int depth) 798{ 799 X509_VERIFY_PARAM_set_depth(s->param, depth); 800} 801 802void 803SSL_set_read_ahead(SSL *s, int yes) 804{ 805 s->read_ahead = yes; 806} 807 808int 809SSL_get_read_ahead(const SSL *s) 810{ 811 return (s->read_ahead); 812} 813 814int 815SSL_pending(const SSL *s) 816{ 817 /* 818 * SSL_pending cannot work properly if read-ahead is enabled 819 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 820 * and it is impossible to fix since SSL_pending cannot report 821 * errors that may be observed while scanning the new data. 822 * (Note that SSL_pending() is often used as a boolean value, 823 * so we'd better not return -1.) 824 */ 825 return (s->method->ssl_pending(s)); 826} 827 828X509 * 829SSL_get_peer_certificate(const SSL *s) 830{ 831 X509 *r; 832 833 if ((s == NULL) || (s->session == NULL)) 834 r = NULL; 835 else 836 r = s->session->peer; 837 838 if (r == NULL) 839 return (r); 840 841 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 842 843 return (r); 844} 845 846STACK_OF(X509) * 847SSL_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 859 * certificate; 860 * if we are a server, it does not. 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 870SSL_copy_session_id(SSL *t, const SSL *f) 871{ 872 CERT *tmp; 873 874 /* Do we need to to SSL locking? */ 875 SSL_set_session(t, SSL_get_session(f)); 876 877 /* 878 * What if we are setup as SSLv2 but want to talk SSLv3 or 879 * vice-versa. 880 */ 881 if (t->method != f->method) { 882 t->method->ssl_free(t); /* cleanup current */ 883 t->method=f->method; /* change method */ 884 t->method->ssl_new(t); /* setup new */ 885 } 886 887 tmp = t->cert; 888 if (f->cert != NULL) { 889 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 890 t->cert = f->cert; 891 } else 892 t->cert = NULL; 893 if (tmp != NULL) 894 ssl_cert_free(tmp); 895 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 896} 897 898/* Fix this so it checks all the valid key/cert options */ 899int 900SSL_CTX_check_private_key(const SSL_CTX *ctx) 901{ 902 if ((ctx == NULL) || (ctx->cert == NULL) || 903 (ctx->cert->key->x509 == NULL)) { 904 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 905 SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ctx->cert->key->privatekey == NULL) { 909 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 910 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 911 return (0); 912 } 913 return (X509_check_private_key(ctx->cert->key->x509, 914 ctx->cert->key->privatekey)); 915} 916 917/* Fix this function so that it takes an optional type parameter */ 918int 919SSL_check_private_key(const SSL *ssl) 920{ 921 if (ssl == NULL) { 922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 923 ERR_R_PASSED_NULL_PARAMETER); 924 return (0); 925 } 926 if (ssl->cert == NULL) { 927 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 928 SSL_R_NO_CERTIFICATE_ASSIGNED); 929 return (0); 930 } 931 if (ssl->cert->key->x509 == NULL) { 932 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 933 SSL_R_NO_CERTIFICATE_ASSIGNED); 934 return (0); 935 } 936 if (ssl->cert->key->privatekey == NULL) { 937 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 938 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 939 return (0); 940 } 941 return (X509_check_private_key(ssl->cert->key->x509, 942 ssl->cert->key->privatekey)); 943} 944 945int 946SSL_accept(SSL *s) 947{ 948 if (s->handshake_func == 0) 949 SSL_set_accept_state(s); /* Not properly initialized yet */ 950 951 return (s->method->ssl_accept(s)); 952} 953 954int 955SSL_connect(SSL *s) 956{ 957 if (s->handshake_func == 0) 958 SSL_set_connect_state(s); /* Not properly initialized yet */ 959 960 return (s->method->ssl_connect(s)); 961} 962 963long 964SSL_get_default_timeout(const SSL *s) 965{ 966 return (s->method->get_timeout()); 967} 968 969int 970SSL_read(SSL *s, void *buf, int num) 971{ 972 if (s->handshake_func == 0) { 973 SSLerr(SSL_F_SSL_READ, 974 SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 979 s->rwstate = SSL_NOTHING; 980 return (0); 981 } 982 return (s->method->ssl_read(s, buf, num)); 983} 984 985int 986SSL_peek(SSL *s, void *buf, int num) 987{ 988 if (s->handshake_func == 0) { 989 SSLerr(SSL_F_SSL_PEEK, 990 SSL_R_UNINITIALIZED); 991 return (-1); 992 } 993 994 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 995 return (0); 996 } 997 return (s->method->ssl_peek(s, buf, num)); 998} 999 1000int 1001SSL_write(SSL *s, const void *buf, int num) 1002{ 1003 if (s->handshake_func == 0) { 1004 SSLerr(SSL_F_SSL_WRITE, 1005 SSL_R_UNINITIALIZED); 1006 return (-1); 1007 } 1008 1009 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1010 s->rwstate = SSL_NOTHING; 1011 SSLerr(SSL_F_SSL_WRITE, 1012 SSL_R_PROTOCOL_IS_SHUTDOWN); 1013 return (-1); 1014 } 1015 return (s->method->ssl_write(s, buf, num)); 1016} 1017 1018int 1019SSL_shutdown(SSL *s) 1020{ 1021 /* 1022 * Note that this function behaves differently from what one might 1023 * expect. Return values are 0 for no success (yet), 1024 * 1 for success; but calling it once is usually not enough, 1025 * even if blocking I/O is used (see ssl3_shutdown). 1026 */ 1027 1028 if (s->handshake_func == 0) { 1029 SSLerr(SSL_F_SSL_SHUTDOWN, 1030 SSL_R_UNINITIALIZED); 1031 return (-1); 1032 } 1033 1034 if ((s != NULL) && !SSL_in_init(s)) 1035 return (s->method->ssl_shutdown(s)); 1036 else 1037 return (1); 1038} 1039 1040int 1041SSL_renegotiate(SSL *s) 1042{ 1043 if (s->renegotiate == 0) 1044 s->renegotiate = 1; 1045 1046 s->new_session = 1; 1047 1048 return (s->method->ssl_renegotiate(s)); 1049} 1050 1051int 1052SSL_renegotiate_abbreviated(SSL *s) 1053{ 1054 if (s->renegotiate == 0) 1055 s->renegotiate = 1; 1056 1057 s->new_session = 0; 1058 1059 return (s->method->ssl_renegotiate(s)); 1060} 1061 1062int 1063SSL_renegotiate_pending(SSL *s) 1064{ 1065 /* 1066 * Becomes true when negotiation is requested; 1067 * false again once a handshake has finished. 1068 */ 1069 return (s->renegotiate != 0); 1070} 1071 1072long 1073SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1074{ 1075 long l; 1076 1077 switch (cmd) { 1078 case SSL_CTRL_GET_READ_AHEAD: 1079 return (s->read_ahead); 1080 case SSL_CTRL_SET_READ_AHEAD: 1081 l = s->read_ahead; 1082 s->read_ahead = larg; 1083 return (l); 1084 1085 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1086 s->msg_callback_arg = parg; 1087 return (1); 1088 1089 case SSL_CTRL_OPTIONS: 1090 return (s->options|=larg); 1091 case SSL_CTRL_CLEAR_OPTIONS: 1092 return (s->options&=~larg); 1093 case SSL_CTRL_MODE: 1094 return (s->mode|=larg); 1095 case SSL_CTRL_CLEAR_MODE: 1096 return (s->mode &=~larg); 1097 case SSL_CTRL_GET_MAX_CERT_LIST: 1098 return (s->max_cert_list); 1099 case SSL_CTRL_SET_MAX_CERT_LIST: 1100 l = s->max_cert_list; 1101 s->max_cert_list = larg; 1102 return (l); 1103 case SSL_CTRL_SET_MTU: 1104#ifndef OPENSSL_NO_DTLS1 1105 if (larg < (long)dtls1_min_mtu()) 1106 return (0); 1107#endif 1108 1109 if (SSL_version(s) == DTLS1_VERSION || 1110 SSL_version(s) == DTLS1_BAD_VER) { 1111 s->d1->mtu = larg; 1112 return (larg); 1113 } 1114 return (0); 1115 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1116 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1117 return (0); 1118 s->max_send_fragment = larg; 1119 return (1); 1120 case SSL_CTRL_GET_RI_SUPPORT: 1121 if (s->s3) 1122 return (s->s3->send_connection_binding); 1123 else return (0); 1124 default: 1125 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1126 } 1127} 1128 1129long 1130SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1131{ 1132 switch (cmd) { 1133 case SSL_CTRL_SET_MSG_CALLBACK: 1134 s->msg_callback = (void (*)(int write_p, int version, 1135 int content_type, const void *buf, size_t len, 1136 SSL *ssl, void *arg))(fp); 1137 return (1); 1138 1139 default: 1140 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1141 } 1142} 1143 1144LHASH_OF(SSL_SESSION) * 1145SSL_CTX_sessions(SSL_CTX *ctx) 1146{ 1147 return (ctx->sessions); 1148} 1149 1150long 1151SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1152{ 1153 long l; 1154 1155 switch (cmd) { 1156 case SSL_CTRL_GET_READ_AHEAD: 1157 return (ctx->read_ahead); 1158 case SSL_CTRL_SET_READ_AHEAD: 1159 l = ctx->read_ahead; 1160 ctx->read_ahead = larg; 1161 return (l); 1162 1163 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1164 ctx->msg_callback_arg = parg; 1165 return (1); 1166 1167 case SSL_CTRL_GET_MAX_CERT_LIST: 1168 return (ctx->max_cert_list); 1169 case SSL_CTRL_SET_MAX_CERT_LIST: 1170 l = ctx->max_cert_list; 1171 ctx->max_cert_list = larg; 1172 return (l); 1173 1174 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1175 l = ctx->session_cache_size; 1176 ctx->session_cache_size = larg; 1177 return (l); 1178 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1179 return (ctx->session_cache_size); 1180 case SSL_CTRL_SET_SESS_CACHE_MODE: 1181 l = ctx->session_cache_mode; 1182 ctx->session_cache_mode = larg; 1183 return (l); 1184 case SSL_CTRL_GET_SESS_CACHE_MODE: 1185 return (ctx->session_cache_mode); 1186 1187 case SSL_CTRL_SESS_NUMBER: 1188 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1189 case SSL_CTRL_SESS_CONNECT: 1190 return (ctx->stats.sess_connect); 1191 case SSL_CTRL_SESS_CONNECT_GOOD: 1192 return (ctx->stats.sess_connect_good); 1193 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1194 return (ctx->stats.sess_connect_renegotiate); 1195 case SSL_CTRL_SESS_ACCEPT: 1196 return (ctx->stats.sess_accept); 1197 case SSL_CTRL_SESS_ACCEPT_GOOD: 1198 return (ctx->stats.sess_accept_good); 1199 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1200 return (ctx->stats.sess_accept_renegotiate); 1201 case SSL_CTRL_SESS_HIT: 1202 return (ctx->stats.sess_hit); 1203 case SSL_CTRL_SESS_CB_HIT: 1204 return (ctx->stats.sess_cb_hit); 1205 case SSL_CTRL_SESS_MISSES: 1206 return (ctx->stats.sess_miss); 1207 case SSL_CTRL_SESS_TIMEOUTS: 1208 return (ctx->stats.sess_timeout); 1209 case SSL_CTRL_SESS_CACHE_FULL: 1210 return (ctx->stats.sess_cache_full); 1211 case SSL_CTRL_OPTIONS: 1212 return (ctx->options|=larg); 1213 case SSL_CTRL_CLEAR_OPTIONS: 1214 return (ctx->options&=~larg); 1215 case SSL_CTRL_MODE: 1216 return (ctx->mode|=larg); 1217 case SSL_CTRL_CLEAR_MODE: 1218 return (ctx->mode&=~larg); 1219 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1220 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1221 return (0); 1222 ctx->max_send_fragment = larg; 1223 return (1); 1224 default: 1225 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1226 } 1227} 1228 1229long 1230SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1231{ 1232 switch (cmd) { 1233 case SSL_CTRL_SET_MSG_CALLBACK: 1234 ctx->msg_callback = (void (*)(int write_p, int version, 1235 int content_type, const void *buf, size_t len, SSL *ssl, 1236 void *arg))(fp); 1237 return (1); 1238 1239 default: 1240 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1241 } 1242} 1243 1244int 1245ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1246{ 1247 long l; 1248 1249 l = a->id - b->id; 1250 if (l == 0L) 1251 return (0); 1252 else 1253 return ((l > 0) ? 1:-1); 1254} 1255 1256int 1257ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1258 const SSL_CIPHER * const *bp) 1259{ 1260 long l; 1261 1262 l = (*ap)->id - (*bp)->id; 1263 if (l == 0L) 1264 return (0); 1265 else 1266 return ((l > 0) ? 1:-1); 1267} 1268 1269/* 1270 * Return a STACK of the ciphers available for the SSL and in order of 1271 * preference. 1272 */ 1273STACK_OF(SSL_CIPHER) * 1274SSL_get_ciphers(const SSL *s) 1275{ 1276 if (s != NULL) { 1277 if (s->cipher_list != NULL) { 1278 return (s->cipher_list); 1279 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1280 return (s->ctx->cipher_list); 1281 } 1282 } 1283 return (NULL); 1284} 1285 1286/* 1287 * Return a STACK of the ciphers available for the SSL and in order of 1288 * algorithm id. 1289 */ 1290STACK_OF(SSL_CIPHER) * 1291ssl_get_ciphers_by_id(SSL *s) 1292{ 1293 if (s != NULL) { 1294 if (s->cipher_list_by_id != NULL) { 1295 return (s->cipher_list_by_id); 1296 } else if ((s->ctx != NULL) && 1297 (s->ctx->cipher_list_by_id != NULL)) { 1298 return (s->ctx->cipher_list_by_id); 1299 } 1300 } 1301 return (NULL); 1302} 1303 1304/* The old interface to get the same thing as SSL_get_ciphers(). */ 1305const char * 1306SSL_get_cipher_list(const SSL *s, int n) 1307{ 1308 SSL_CIPHER *c; 1309 STACK_OF(SSL_CIPHER) *sk; 1310 1311 if (s == NULL) 1312 return (NULL); 1313 sk = SSL_get_ciphers(s); 1314 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1315 return (NULL); 1316 c = sk_SSL_CIPHER_value(sk, n); 1317 if (c == NULL) 1318 return (NULL); 1319 return (c->name); 1320} 1321 1322/* Specify the ciphers to be used by default by the SSL_CTX. */ 1323int 1324SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1325{ 1326 STACK_OF(SSL_CIPHER) *sk; 1327 1328 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1329 &ctx->cipher_list_by_id, str); 1330 /* 1331 * ssl_create_cipher_list may return an empty stack if it 1332 * was unable to find a cipher matching the given rule string 1333 * (for example if the rule string specifies a cipher which 1334 * has been disabled). This is not an error as far as 1335 * ssl_create_cipher_list is concerned, and hence 1336 * ctx->cipher_list and ctx->cipher_list_by_id has been 1337 * updated. 1338 */ 1339 if (sk == NULL) 1340 return (0); 1341 else if (sk_SSL_CIPHER_num(sk) == 0) { 1342 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1343 SSL_R_NO_CIPHER_MATCH); 1344 return (0); 1345 } 1346 return (1); 1347} 1348 1349/* Specify the ciphers to be used by the SSL. */ 1350int 1351SSL_set_cipher_list(SSL *s, const char *str) 1352{ 1353 STACK_OF(SSL_CIPHER) *sk; 1354 1355 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1356 &s->cipher_list_by_id, str); 1357 /* see comment in SSL_CTX_set_cipher_list */ 1358 if (sk == NULL) 1359 return (0); 1360 else if (sk_SSL_CIPHER_num(sk) == 0) { 1361 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1362 SSL_R_NO_CIPHER_MATCH); 1363 return (0); 1364 } 1365 return (1); 1366} 1367 1368/* works well for SSLv2, not so good for SSLv3 */ 1369char * 1370SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1371{ 1372 char *end; 1373 STACK_OF(SSL_CIPHER) *sk; 1374 SSL_CIPHER *c; 1375 size_t curlen = 0; 1376 int i; 1377 1378 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1379 (len < 2)) 1380 return (NULL); 1381 1382 sk = s->session->ciphers; 1383 buf[0] = '\0'; 1384 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1385 c = sk_SSL_CIPHER_value(sk, i); 1386 end = buf + curlen; 1387 if (strlcat(buf, c->name, len) >= len || 1388 (curlen = strlcat(buf, ":", len)) >= len) { 1389 /* remove truncated cipher from list */ 1390 *end = '\0'; 1391 break; 1392 } 1393 } 1394 /* remove trailing colon */ 1395 if ((end = strrchr(buf, ':')) != NULL) 1396 *end = '\0'; 1397 return (buf); 1398} 1399 1400int 1401ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1402 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1403{ 1404 int i, j = 0; 1405 SSL_CIPHER *c; 1406 unsigned char *q; 1407 1408 if (sk == NULL) 1409 return (0); 1410 q = p; 1411 1412 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1413 c = sk_SSL_CIPHER_value(sk, i); 1414 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1415 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1416 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1417 continue; 1418#ifndef OPENSSL_NO_PSK 1419 /* with PSK there must be client callback set */ 1420 if (((c->algorithm_mkey & SSL_kPSK) || 1421 (c->algorithm_auth & SSL_aPSK)) && 1422 s->psk_client_callback == NULL) 1423 continue; 1424#endif /* OPENSSL_NO_PSK */ 1425 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1426 p += j; 1427 } 1428 /* 1429 * If p == q, no ciphers and caller indicates an error. Otherwise 1430 * add SCSV if not renegotiating. 1431 */ 1432 if (p != q && !s->renegotiate) { 1433 static SSL_CIPHER scsv = { 1434 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1435 }; 1436 j = put_cb ? put_cb(&scsv, p) : 1437 ssl_put_cipher_by_char(s, &scsv, p); 1438 p += j; 1439 } 1440 1441 return (p - q); 1442} 1443 1444STACK_OF(SSL_CIPHER) * 1445ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1446 STACK_OF(SSL_CIPHER) **skp) 1447{ 1448 const SSL_CIPHER *c; 1449 STACK_OF(SSL_CIPHER) *sk; 1450 int i, n; 1451 1452 if (s->s3) 1453 s->s3->send_connection_binding = 0; 1454 1455 n = ssl_put_cipher_by_char(s, NULL, NULL); 1456 if ((num % n) != 0) { 1457 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1458 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1459 return (NULL); 1460 } 1461 if ((skp == NULL) || (*skp == NULL)) 1462 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1463 else { 1464 sk= *skp; 1465 sk_SSL_CIPHER_zero(sk); 1466 } 1467 1468 for (i = 0; i < num; i += n) { 1469 /* Check for SCSV */ 1470 if (s->s3 && (n != 3 || !p[0]) && 1471 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1472 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1473 /* SCSV fatal if renegotiating */ 1474 if (s->renegotiate) { 1475 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1476 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1477 ssl3_send_alert(s, SSL3_AL_FATAL, 1478 SSL_AD_HANDSHAKE_FAILURE); 1479 1480 goto err; 1481 } 1482 s->s3->send_connection_binding = 1; 1483 p += n; 1484 continue; 1485 } 1486 1487 c = ssl_get_cipher_by_char(s, p); 1488 p += n; 1489 if (c != NULL) { 1490 if (!sk_SSL_CIPHER_push(sk, c)) { 1491 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1492 ERR_R_MALLOC_FAILURE); 1493 goto err; 1494 } 1495 } 1496 } 1497 1498 if (skp != NULL) 1499 *skp = sk; 1500 return (sk); 1501 err: 1502 if ((skp == NULL) || (*skp == NULL)) 1503 sk_SSL_CIPHER_free(sk); 1504 return (NULL); 1505} 1506 1507 1508#ifndef OPENSSL_NO_TLSEXT 1509/* 1510 * Return a servername extension value if provided in Client Hello, or NULL. 1511 * So far, only host_name types are defined (RFC 3546). 1512 */ 1513const char * 1514SSL_get_servername(const SSL *s, const int type) 1515{ 1516 if (type != TLSEXT_NAMETYPE_host_name) 1517 return (NULL); 1518 1519 return (s->session && !s->tlsext_hostname ? 1520 s->session->tlsext_hostname : 1521 s->tlsext_hostname); 1522} 1523 1524int 1525SSL_get_servername_type(const SSL *s) 1526{ 1527 if (s->session && 1528 (!s->tlsext_hostname ? 1529 s->session->tlsext_hostname : s->tlsext_hostname)) 1530 return (TLSEXT_NAMETYPE_host_name); 1531 return (-1); 1532} 1533 1534# ifndef OPENSSL_NO_NEXTPROTONEG 1535/* 1536 * SSL_select_next_proto implements the standard protocol selection. It is 1537 * expected that this function is called from the callback set by 1538 * SSL_CTX_set_next_proto_select_cb. 1539 * 1540 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1541 * strings. The length byte itself is not included in the length. A byte 1542 * string of length 0 is invalid. No byte string may be truncated. 1543 * 1544 * The current, but experimental algorithm for selecting the protocol is: 1545 * 1546 * 1) If the server doesn't support NPN then this is indicated to the 1547 * callback. In this case, the client application has to abort the connection 1548 * or have a default application level protocol. 1549 * 1550 * 2) If the server supports NPN, but advertises an empty list then the 1551 * client selects the first protcol in its list, but indicates via the 1552 * API that this fallback case was enacted. 1553 * 1554 * 3) Otherwise, the client finds the first protocol in the server's list 1555 * that it supports and selects this protocol. This is because it's 1556 * assumed that the server has better information about which protocol 1557 * a client should use. 1558 * 1559 * 4) If the client doesn't support any of the server's advertised 1560 * protocols, then this is treated the same as case 2. 1561 * 1562 * It returns either 1563 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1564 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1565 */ 1566int 1567SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1568 const unsigned char *server, unsigned int server_len, 1569 const unsigned char *client, unsigned int client_len) 1570{ 1571 unsigned int i, j; 1572 const unsigned char *result; 1573 int status = OPENSSL_NPN_UNSUPPORTED; 1574 1575 /* 1576 * For each protocol in server preference order, 1577 * see if we support it. 1578 */ 1579 for (i = 0; i < server_len; ) { 1580 for (j = 0; j < client_len; ) { 1581 if (server[i] == client[j] && 1582 memcmp(&server[i + 1], 1583 &client[j + 1], server[i]) == 0) { 1584 /* We found a match */ 1585 result = &server[i]; 1586 status = OPENSSL_NPN_NEGOTIATED; 1587 goto found; 1588 } 1589 j += client[j]; 1590 j++; 1591 } 1592 i += server[i]; 1593 i++; 1594 } 1595 1596 /* There's no overlap between our protocols and the server's list. */ 1597 result = client; 1598 status = OPENSSL_NPN_NO_OVERLAP; 1599 1600 found: 1601 *out = (unsigned char *) result + 1; 1602 *outlen = result[0]; 1603 return (status); 1604} 1605 1606/* 1607 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1608 * requested protocol for this connection and returns 0. If the client didn't 1609 * request any protocol, then *data is set to NULL. 1610 * 1611 * Note that the client can request any protocol it chooses. The value returned 1612 * from this function need not be a member of the list of supported protocols 1613 * provided by the callback. 1614 */ 1615void 1616SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1617 unsigned *len) 1618{ 1619 *data = s->next_proto_negotiated; 1620 if (!*data) { 1621 *len = 0; 1622 } else { 1623 *len = s->next_proto_negotiated_len; 1624 } 1625} 1626 1627/* 1628 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1629 * TLS server needs a list of supported protocols for Next Protocol 1630 * Negotiation. The returned list must be in wire format. The list is returned 1631 * by setting |out| to point to it and |outlen| to its length. This memory will 1632 * not be modified, but one should assume that the SSL* keeps a reference to 1633 * it. 1634 * 1635 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1636 * Otherwise, no such extension will be included in the ServerHello. 1637 */ 1638void 1639SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1640 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1641{ 1642 ctx->next_protos_advertised_cb = cb; 1643 ctx->next_protos_advertised_cb_arg = arg; 1644} 1645 1646/* 1647 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1648 * client needs to select a protocol from the server's provided list. |out| 1649 * must be set to point to the selected protocol (which may be within |in|). 1650 * The length of the protocol name must be written into |outlen|. The server's 1651 * advertised protocols are provided in |in| and |inlen|. The callback can 1652 * assume that |in| is syntactically valid. 1653 * 1654 * The client must select a protocol. It is fatal to the connection if this 1655 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1656 */ 1657void 1658SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1659 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1660 unsigned int inlen, void *arg), void *arg) 1661{ 1662 ctx->next_proto_select_cb = cb; 1663 ctx->next_proto_select_cb_arg = arg; 1664} 1665# endif 1666#endif 1667 1668int 1669SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1670 const char *label, size_t llen, const unsigned char *p, size_t plen, 1671 int use_context) 1672{ 1673 if (s->version < TLS1_VERSION) 1674 return (-1); 1675 1676 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1677 label, llen, p, plen, use_context)); 1678} 1679 1680static unsigned long 1681ssl_session_hash(const SSL_SESSION *a) 1682{ 1683 unsigned long l; 1684 1685 l = (unsigned long) 1686 ((unsigned int) a->session_id[0] )| 1687 ((unsigned int) a->session_id[1]<< 8L)| 1688 ((unsigned long)a->session_id[2]<<16L)| 1689 ((unsigned long)a->session_id[3]<<24L); 1690 return (l); 1691} 1692 1693/* 1694 * NB: If this function (or indeed the hash function which uses a sort of 1695 * coarser function than this one) is changed, ensure 1696 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1697 * able to construct an SSL_SESSION that will collide with any existing session 1698 * with a matching session ID. 1699 */ 1700static int 1701ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1702{ 1703 if (a->ssl_version != b->ssl_version) 1704 return (1); 1705 if (a->session_id_length != b->session_id_length) 1706 return (1); 1707 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1708} 1709 1710/* 1711 * These wrapper functions should remain rather than redeclaring 1712 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1713 * variable. The reason is that the functions aren't static, they're exposed via 1714 * ssl.h. 1715 */ 1716static 1717IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1718static 1719IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1720 1721SSL_CTX * 1722SSL_CTX_new(const SSL_METHOD *meth) 1723{ 1724 SSL_CTX *ret = NULL; 1725 1726 if (meth == NULL) { 1727 SSLerr(SSL_F_SSL_CTX_NEW, 1728 SSL_R_NULL_SSL_METHOD_PASSED); 1729 return (NULL); 1730 } 1731 1732 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1733 SSLerr(SSL_F_SSL_CTX_NEW, 1734 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1735 goto err; 1736 } 1737 ret = calloc(1, sizeof(SSL_CTX)); 1738 if (ret == NULL) 1739 goto err; 1740 1741 ret->method = meth; 1742 1743 ret->cert_store = NULL; 1744 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1745 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1746 ret->session_cache_head = NULL; 1747 ret->session_cache_tail = NULL; 1748 1749 /* We take the system default */ 1750 ret->session_timeout = meth->get_timeout(); 1751 1752 ret->new_session_cb = 0; 1753 ret->remove_session_cb = 0; 1754 ret->get_session_cb = 0; 1755 ret->generate_session_id = 0; 1756 1757 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1758 1759 ret->references = 1; 1760 ret->quiet_shutdown = 0; 1761 1762 ret->info_callback = NULL; 1763 1764 ret->app_verify_callback = 0; 1765 ret->app_verify_arg = NULL; 1766 1767 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1768 ret->read_ahead = 0; 1769 ret->msg_callback = 0; 1770 ret->msg_callback_arg = NULL; 1771 ret->verify_mode = SSL_VERIFY_NONE; 1772#if 0 1773 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1774#endif 1775 ret->sid_ctx_length = 0; 1776 ret->default_verify_callback = NULL; 1777 if ((ret->cert = ssl_cert_new()) == NULL) 1778 goto err; 1779 1780 ret->default_passwd_callback = 0; 1781 ret->default_passwd_callback_userdata = NULL; 1782 ret->client_cert_cb = 0; 1783 ret->app_gen_cookie_cb = 0; 1784 ret->app_verify_cookie_cb = 0; 1785 1786 ret->sessions = lh_SSL_SESSION_new(); 1787 if (ret->sessions == NULL) 1788 goto err; 1789 ret->cert_store = X509_STORE_new(); 1790 if (ret->cert_store == NULL) 1791 goto err; 1792 1793 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1794 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1795 if (ret->cipher_list == NULL || 1796 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1797 SSLerr(SSL_F_SSL_CTX_NEW, 1798 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1799 goto err2; 1800 } 1801 1802 ret->param = X509_VERIFY_PARAM_new(); 1803 if (!ret->param) 1804 goto err; 1805 1806 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1807 SSLerr(SSL_F_SSL_CTX_NEW, 1808 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, 1813 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1814 goto err2; 1815 } 1816 1817 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1818 goto err; 1819 1820 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1821 1822 ret->extra_certs = NULL; 1823 /* No compression for DTLS */ 1824 if (meth->version != DTLS1_VERSION) 1825 ret->comp_methods = SSL_COMP_get_compression_methods(); 1826 1827 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1828 1829#ifndef OPENSSL_NO_TLSEXT 1830 ret->tlsext_servername_callback = 0; 1831 ret->tlsext_servername_arg = NULL; 1832 /* Setup RFC4507 ticket keys */ 1833 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1834 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1835 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1836 ret->options |= SSL_OP_NO_TICKET; 1837 1838 ret->tlsext_status_cb = 0; 1839 ret->tlsext_status_arg = NULL; 1840 1841# ifndef OPENSSL_NO_NEXTPROTONEG 1842 ret->next_protos_advertised_cb = 0; 1843 ret->next_proto_select_cb = 0; 1844# endif 1845#endif 1846#ifndef OPENSSL_NO_PSK 1847 ret->psk_identity_hint = NULL; 1848 ret->psk_client_callback = NULL; 1849 ret->psk_server_callback = NULL; 1850#endif 1851#ifndef OPENSSL_NO_ENGINE 1852 ret->client_cert_engine = NULL; 1853#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1854#define eng_strx(x) #x 1855#define eng_str(x) eng_strx(x) 1856 /* Use specific client engine automatically... ignore errors */ 1857 { 1858 ENGINE *eng; 1859 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1860 if (!eng) { 1861 ERR_clear_error(); 1862 ENGINE_load_builtin_engines(); 1863 eng = ENGINE_by_id(eng_str( 1864 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1865 } 1866 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1867 ERR_clear_error(); 1868 } 1869#endif 1870#endif 1871 /* 1872 * Default is to connect to non-RI servers. When RI is more widely 1873 * deployed might change this. 1874 */ 1875 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1876 1877 return (ret); 1878 err: 1879 SSLerr(SSL_F_SSL_CTX_NEW, 1880 ERR_R_MALLOC_FAILURE); 1881 err2: 1882 if (ret != NULL) 1883 SSL_CTX_free(ret); 1884 return (NULL); 1885} 1886 1887#if 0 1888static void 1889SSL_COMP_free(SSL_COMP *comp) 1890{ 1891 free(comp); 1892} 1893#endif 1894 1895void 1896SSL_CTX_free(SSL_CTX *a) 1897{ 1898 int i; 1899 1900 if (a == NULL) 1901 return; 1902 1903 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1904 if (i > 0) 1905 return; 1906 1907 if (a->param) 1908 X509_VERIFY_PARAM_free(a->param); 1909 1910 /* 1911 * Free internal session cache. However: the remove_cb() may reference 1912 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1913 * after the sessions were flushed. 1914 * As the ex_data handling routines might also touch the session cache, 1915 * the most secure solution seems to be: empty (flush) the cache, then 1916 * free ex_data, then finally free the cache. 1917 * (See ticket [openssl.org #212].) 1918 */ 1919 if (a->sessions != NULL) 1920 SSL_CTX_flush_sessions(a, 0); 1921 1922 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1923 1924 if (a->sessions != NULL) 1925 lh_SSL_SESSION_free(a->sessions); 1926 1927 if (a->cert_store != NULL) 1928 X509_STORE_free(a->cert_store); 1929 if (a->cipher_list != NULL) 1930 sk_SSL_CIPHER_free(a->cipher_list); 1931 if (a->cipher_list_by_id != NULL) 1932 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1933 if (a->cert != NULL) 1934 ssl_cert_free(a->cert); 1935 if (a->client_CA != NULL) 1936 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1937 if (a->extra_certs != NULL) 1938 sk_X509_pop_free(a->extra_certs, X509_free); 1939#if 0 /* This should never be done, since it removes a global database */ 1940 if (a->comp_methods != NULL) 1941 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1942#else 1943 a->comp_methods = NULL; 1944#endif 1945 1946#ifndef OPENSSL_NO_SRTP 1947 if (a->srtp_profiles) 1948 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1949#endif 1950 1951#ifndef OPENSSL_NO_PSK 1952 free(a->psk_identity_hint); 1953#endif 1954#ifndef OPENSSL_NO_ENGINE 1955 if (a->client_cert_engine) 1956 ENGINE_finish(a->client_cert_engine); 1957#endif 1958 1959 free(a); 1960} 1961 1962void 1963SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1964{ 1965 ctx->default_passwd_callback = cb; 1966} 1967 1968void 1969SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1970{ 1971 ctx->default_passwd_callback_userdata = u; 1972} 1973 1974void 1975SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1976 void *), void *arg) 1977{ 1978 ctx->app_verify_callback = cb; 1979 ctx->app_verify_arg = arg; 1980} 1981 1982void 1983SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1984{ 1985 ctx->verify_mode = mode; 1986 ctx->default_verify_callback = cb; 1987} 1988 1989void 1990SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1991{ 1992 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1993} 1994 1995void 1996ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1997{ 1998 CERT_PKEY *cpk; 1999 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2000 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2001 int rsa_tmp_export, dh_tmp_export, kl; 2002 unsigned long mask_k, mask_a, emask_k, emask_a; 2003 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2004#ifndef OPENSSL_NO_ECDH 2005 int have_ecdh_tmp; 2006#endif 2007 X509 *x = NULL; 2008 EVP_PKEY *ecc_pkey = NULL; 2009 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2010 2011 if (c == NULL) 2012 return; 2013 2014 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2015 2016 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2017 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2018 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2019#ifndef OPENSSL_NO_DH 2020 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2021 dh_tmp_export = (c->dh_tmp_cb != NULL || 2022 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2023#else 2024 dh_tmp = dh_tmp_export = 0; 2025#endif 2026 2027#ifndef OPENSSL_NO_ECDH 2028 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2029#endif 2030 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2031 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2032 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2033 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2034 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2035 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2036 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2037 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2038 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2039 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2040 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2041/* FIX THIS EAY EAY EAY */ 2042 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2043 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2044 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2045 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2046 mask_k = 0; 2047 mask_a = 0; 2048 emask_k = 0; 2049 emask_a = 0; 2050 2051 2052 2053 2054 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2055 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2056 mask_k |= SSL_kGOST; 2057 mask_a |= SSL_aGOST01; 2058 } 2059 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2060 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2061 mask_k |= SSL_kGOST; 2062 mask_a |= SSL_aGOST94; 2063 } 2064 2065 if (rsa_enc || (rsa_tmp && rsa_sign)) 2066 mask_k|=SSL_kRSA; 2067 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2068 emask_k|=SSL_kRSA; 2069 2070#if 0 2071 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2072 if ((dh_tmp || dh_rsa || dh_dsa) && 2073 (rsa_enc || rsa_sign || dsa_sign)) 2074 mask_k|=SSL_kEDH; 2075 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2076 (rsa_enc || rsa_sign || dsa_sign)) 2077 emask_k|=SSL_kEDH; 2078#endif 2079 2080 if (dh_tmp_export) 2081 emask_k|=SSL_kEDH; 2082 2083 if (dh_tmp) 2084 mask_k|=SSL_kEDH; 2085 2086 if (dh_rsa) 2087 mask_k|=SSL_kDHr; 2088 if (dh_rsa_export) 2089 emask_k|=SSL_kDHr; 2090 2091 if (dh_dsa) 2092 mask_k|=SSL_kDHd; 2093 if (dh_dsa_export) 2094 emask_k|=SSL_kDHd; 2095 2096 if (rsa_enc || rsa_sign) { 2097 mask_a|=SSL_aRSA; 2098 emask_a|=SSL_aRSA; 2099 } 2100 2101 if (dsa_sign) { 2102 mask_a|=SSL_aDSS; 2103 emask_a|=SSL_aDSS; 2104 } 2105 2106 mask_a|=SSL_aNULL; 2107 emask_a|=SSL_aNULL; 2108 2109 2110 /* 2111 * An ECC certificate may be usable for ECDH and/or 2112 * ECDSA cipher suites depending on the key usage extension. 2113 */ 2114 if (have_ecc_cert) { 2115 /* This call populates extension flags (ex_flags) */ 2116 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2117 X509_check_purpose(x, -1, 0); 2118 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2119 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2120 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2121 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2122 ecc_pkey = X509_get_pubkey(x); 2123 ecc_pkey_size = (ecc_pkey != NULL) ? 2124 EVP_PKEY_bits(ecc_pkey) : 0; 2125 EVP_PKEY_free(ecc_pkey); 2126 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2127 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2128 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2129 } 2130#ifndef OPENSSL_NO_ECDH 2131 if (ecdh_ok) { 2132 2133 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2134 mask_k|=SSL_kECDHr; 2135 mask_a|=SSL_aECDH; 2136 if (ecc_pkey_size <= 163) { 2137 emask_k|=SSL_kECDHr; 2138 emask_a|=SSL_aECDH; 2139 } 2140 } 2141 2142 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2143 mask_k|=SSL_kECDHe; 2144 mask_a|=SSL_aECDH; 2145 if (ecc_pkey_size <= 163) { 2146 emask_k|=SSL_kECDHe; 2147 emask_a|=SSL_aECDH; 2148 } 2149 } 2150 } 2151#endif 2152#ifndef OPENSSL_NO_ECDSA 2153 if (ecdsa_ok) { 2154 mask_a|=SSL_aECDSA; 2155 emask_a|=SSL_aECDSA; 2156 } 2157#endif 2158 } 2159 2160#ifndef OPENSSL_NO_ECDH 2161 if (have_ecdh_tmp) { 2162 mask_k|=SSL_kEECDH; 2163 emask_k|=SSL_kEECDH; 2164 } 2165#endif 2166 2167#ifndef OPENSSL_NO_PSK 2168 mask_k |= SSL_kPSK; 2169 mask_a |= SSL_aPSK; 2170 emask_k |= SSL_kPSK; 2171 emask_a |= SSL_aPSK; 2172#endif 2173 2174 c->mask_k = mask_k; 2175 c->mask_a = mask_a; 2176 c->export_mask_k = emask_k; 2177 c->export_mask_a = emask_a; 2178 c->valid = 1; 2179} 2180 2181/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2182#define ku_reject(x, usage) \ 2183 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2184 2185#ifndef OPENSSL_NO_EC 2186 2187int 2188ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2189{ 2190 unsigned long alg_k, alg_a; 2191 EVP_PKEY *pkey = NULL; 2192 int keysize = 0; 2193 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2194 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2195 2196 alg_k = cs->algorithm_mkey; 2197 alg_a = cs->algorithm_auth; 2198 2199 if (SSL_C_IS_EXPORT(cs)) { 2200 /* ECDH key length in export ciphers must be <= 163 bits */ 2201 pkey = X509_get_pubkey(x); 2202 if (pkey == NULL) 2203 return (0); 2204 keysize = EVP_PKEY_bits(pkey); 2205 EVP_PKEY_free(pkey); 2206 if (keysize > 163) 2207 return (0); 2208 } 2209 2210 /* This call populates the ex_flags field correctly */ 2211 X509_check_purpose(x, -1, 0); 2212 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2213 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2214 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2215 } 2216 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2217 /* key usage, if present, must allow key agreement */ 2218 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2219 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2220 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2221 return (0); 2222 } 2223 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2224 TLS1_2_VERSION) { 2225 /* signature alg must be ECDSA */ 2226 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2227 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2228 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2229 return (0); 2230 } 2231 } 2232 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2233 TLS1_2_VERSION) { 2234 /* signature alg must be RSA */ 2235 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2236 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2237 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2238 return (0); 2239 } 2240 } 2241 } 2242 if (alg_a & SSL_aECDSA) { 2243 /* key usage, if present, must allow signing */ 2244 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2245 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2246 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2247 return (0); 2248 } 2249 } 2250 2251 return (1); 2252 /* all checks are ok */ 2253} 2254 2255#endif 2256 2257/* THIS NEEDS CLEANING UP */ 2258CERT_PKEY * 2259ssl_get_server_send_pkey(const SSL *s) 2260{ 2261 unsigned long alg_k, alg_a; 2262 CERT *c; 2263 int i; 2264 2265 c = s->cert; 2266 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2267 2268 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2269 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2270 2271 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2272 /* 2273 * We don't need to look at SSL_kEECDH 2274 * since no certificate is needed for 2275 * anon ECDH and for authenticated 2276 * EECDH, the check for the auth 2277 * algorithm will set i correctly 2278 * NOTE: For ECDH-RSA, we need an ECC 2279 * not an RSA cert but for EECDH-RSA 2280 * we need an RSA cert. Placing the 2281 * checks for SSL_kECDH before RSA 2282 * checks ensures the correct cert is chosen. 2283 */ 2284 i = SSL_PKEY_ECC; 2285 } else if (alg_a & SSL_aECDSA) { 2286 i = SSL_PKEY_ECC; 2287 } else if (alg_k & SSL_kDHr) 2288 i = SSL_PKEY_DH_RSA; 2289 else if (alg_k & SSL_kDHd) 2290 i = SSL_PKEY_DH_DSA; 2291 else if (alg_a & SSL_aDSS) 2292 i = SSL_PKEY_DSA_SIGN; 2293 else if (alg_a & SSL_aRSA) { 2294 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2295 i = SSL_PKEY_RSA_SIGN; 2296 else 2297 i = SSL_PKEY_RSA_ENC; 2298 } else if (alg_a & SSL_aKRB5) { 2299 /* VRS something else here? */ 2300 return (NULL); 2301 } else if (alg_a & SSL_aGOST94) 2302 i = SSL_PKEY_GOST94; 2303 else if (alg_a & SSL_aGOST01) 2304 i = SSL_PKEY_GOST01; 2305 else { /* if (alg_a & SSL_aNULL) */ 2306 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, 2307 ERR_R_INTERNAL_ERROR); 2308 return (NULL); 2309 } 2310 2311 return (c->pkeys + i); 2312} 2313 2314X509 * 2315ssl_get_server_send_cert(const SSL *s) 2316{ 2317 CERT_PKEY *cpk; 2318 2319 cpk = ssl_get_server_send_pkey(s); 2320 if (!cpk) 2321 return (NULL); 2322 return (cpk->x509); 2323} 2324 2325EVP_PKEY * 2326ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2327{ 2328 unsigned long alg_a; 2329 CERT *c; 2330 int idx = -1; 2331 2332 alg_a = cipher->algorithm_auth; 2333 c = s->cert; 2334 2335 if ((alg_a & SSL_aDSS) && 2336 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2337 idx = SSL_PKEY_DSA_SIGN; 2338 else if (alg_a & SSL_aRSA) { 2339 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2340 idx = SSL_PKEY_RSA_SIGN; 2341 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2342 idx = SSL_PKEY_RSA_ENC; 2343 } else if ((alg_a & SSL_aECDSA) && 2344 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2345 idx = SSL_PKEY_ECC; 2346 if (idx == -1) { 2347 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, 2348 ERR_R_INTERNAL_ERROR); 2349 return (NULL); 2350 } 2351 if (pmd) 2352 *pmd = c->pkeys[idx].digest; 2353 return (c->pkeys[idx].privatekey); 2354} 2355 2356void 2357ssl_update_cache(SSL *s, int mode) 2358{ 2359 int i; 2360 2361 /* 2362 * If the session_id_length is 0, we are not supposed to cache it, 2363 * and it would be rather hard to do anyway :-) 2364 */ 2365 if (s->session->session_id_length == 0) 2366 return; 2367 2368 i = s->session_ctx->session_cache_mode; 2369 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2370 || SSL_CTX_add_session(s->session_ctx, s->session)) 2371 && (s->session_ctx->new_session_cb != NULL)) { 2372 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2373 if (!s->session_ctx->new_session_cb(s, s->session)) 2374 SSL_SESSION_free(s->session); 2375 } 2376 2377 /* auto flush every 255 connections */ 2378 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2379 ((i & mode) == mode)) { 2380 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2381 s->session_ctx->stats.sess_connect_good : 2382 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2383 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2384 } 2385 } 2386} 2387 2388const SSL_METHOD * 2389SSL_get_ssl_method(SSL *s) 2390{ 2391 return (s->method); 2392} 2393 2394int 2395SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2396{ 2397 int conn = -1; 2398 int ret = 1; 2399 2400 if (s->method != meth) { 2401 if (s->handshake_func != NULL) 2402 conn = (s->handshake_func == s->method->ssl_connect); 2403 2404 if (s->method->version == meth->version) 2405 s->method = meth; 2406 else { 2407 s->method->ssl_free(s); 2408 s->method = meth; 2409 ret = s->method->ssl_new(s); 2410 } 2411 2412 if (conn == 1) 2413 s->handshake_func = meth->ssl_connect; 2414 else if (conn == 0) 2415 s->handshake_func = meth->ssl_accept; 2416 } 2417 return (ret); 2418} 2419 2420int 2421SSL_get_error(const SSL *s, int i) 2422{ 2423 int reason; 2424 unsigned long l; 2425 BIO *bio; 2426 2427 if (i > 0) 2428 return (SSL_ERROR_NONE); 2429 2430 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2431 * etc, where we do encode the error */ 2432 if ((l = ERR_peek_error()) != 0) { 2433 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2434 return (SSL_ERROR_SYSCALL); 2435 else 2436 return (SSL_ERROR_SSL); 2437 } 2438 2439 if ((i < 0) && SSL_want_read(s)) { 2440 bio = SSL_get_rbio(s); 2441 if (BIO_should_read(bio)) 2442 return (SSL_ERROR_WANT_READ); 2443 else if (BIO_should_write(bio)) 2444 /* 2445 * This one doesn't make too much sense... We never 2446 * try to write to the rbio, and an application 2447 * program where rbio and wbio are separate couldn't 2448 * even know what it should wait for. However if we 2449 * ever set s->rwstate incorrectly (so that we have 2450 * SSL_want_read(s) instead of SSL_want_write(s)) 2451 * and rbio and wbio *are* the same, this test works 2452 * around that bug; so it might be safer to keep it. 2453 */ 2454 return (SSL_ERROR_WANT_WRITE); 2455 else if (BIO_should_io_special(bio)) { 2456 reason = BIO_get_retry_reason(bio); 2457 if (reason == BIO_RR_CONNECT) 2458 return (SSL_ERROR_WANT_CONNECT); 2459 else if (reason == BIO_RR_ACCEPT) 2460 return (SSL_ERROR_WANT_ACCEPT); 2461 else 2462 return (SSL_ERROR_SYSCALL); /* unknown */ 2463 } 2464 } 2465 2466 if ((i < 0) && SSL_want_write(s)) { 2467 bio = SSL_get_wbio(s); 2468 if (BIO_should_write(bio)) 2469 return (SSL_ERROR_WANT_WRITE); 2470 else if (BIO_should_read(bio)) { 2471 /* 2472 * See above (SSL_want_read(s) with 2473 * BIO_should_write(bio)) 2474 */ 2475 return (SSL_ERROR_WANT_READ); 2476 } else if (BIO_should_io_special(bio)) { 2477 reason = BIO_get_retry_reason(bio); 2478 if (reason == BIO_RR_CONNECT) 2479 return (SSL_ERROR_WANT_CONNECT); 2480 else if (reason == BIO_RR_ACCEPT) 2481 return (SSL_ERROR_WANT_ACCEPT); 2482 else 2483 return (SSL_ERROR_SYSCALL); 2484 } 2485 } 2486 if ((i < 0) && SSL_want_x509_lookup(s)) { 2487 return (SSL_ERROR_WANT_X509_LOOKUP); 2488 } 2489 2490 if (i == 0) { 2491 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2492 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2493 return (SSL_ERROR_ZERO_RETURN); 2494 } 2495 return (SSL_ERROR_SYSCALL); 2496} 2497 2498int 2499SSL_do_handshake(SSL *s) 2500{ 2501 int ret = 1; 2502 2503 if (s->handshake_func == NULL) { 2504 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2505 SSL_R_CONNECTION_TYPE_NOT_SET); 2506 return (-1); 2507 } 2508 2509 s->method->ssl_renegotiate_check(s); 2510 2511 if (SSL_in_init(s) || SSL_in_before(s)) { 2512 ret = s->handshake_func(s); 2513 } 2514 return (ret); 2515} 2516 2517/* 2518 * For the next 2 functions, SSL_clear() sets shutdown and so 2519 * one of these calls will reset it 2520 */ 2521void 2522SSL_set_accept_state(SSL *s) 2523{ 2524 s->server = 1; 2525 s->shutdown = 0; 2526 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2527 s->handshake_func = s->method->ssl_accept; 2528 /* clear the current cipher */ 2529 ssl_clear_cipher_ctx(s); 2530 ssl_clear_hash_ctx(&s->read_hash); 2531 ssl_clear_hash_ctx(&s->write_hash); 2532} 2533 2534void 2535SSL_set_connect_state(SSL *s) 2536{ 2537 s->server = 0; 2538 s->shutdown = 0; 2539 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2540 s->handshake_func = s->method->ssl_connect; 2541 /* clear the current cipher */ 2542 ssl_clear_cipher_ctx(s); 2543 ssl_clear_hash_ctx(&s->read_hash); 2544 ssl_clear_hash_ctx(&s->write_hash); 2545} 2546 2547int 2548ssl_undefined_function(SSL *s) 2549{ 2550 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2551 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2552 return (0); 2553} 2554 2555int 2556ssl_undefined_void_function(void) 2557{ 2558 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2559 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2560 return (0); 2561} 2562 2563int 2564ssl_undefined_const_function(const SSL *s) 2565{ 2566 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2567 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2568 return (0); 2569} 2570 2571SSL_METHOD * 2572ssl_bad_method(int ver) 2573{ 2574 SSLerr(SSL_F_SSL_BAD_METHOD, 2575 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2576 return (NULL); 2577} 2578 2579const char * 2580SSL_get_version(const SSL *s) 2581{ 2582 if (s->version == TLS1_2_VERSION) 2583 return ("TLSv1.2"); 2584 else if (s->version == TLS1_1_VERSION) 2585 return ("TLSv1.1"); 2586 else if (s->version == TLS1_VERSION) 2587 return ("TLSv1"); 2588 else if (s->version == SSL3_VERSION) 2589 return ("SSLv3"); 2590 else 2591 return ("unknown"); 2592} 2593 2594SSL * 2595SSL_dup(SSL *s) 2596{ 2597 STACK_OF(X509_NAME) *sk; 2598 X509_NAME *xn; 2599 SSL *ret; 2600 int i; 2601 2602 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2603 return (NULL); 2604 2605 ret->version = s->version; 2606 ret->type = s->type; 2607 ret->method = s->method; 2608 2609 if (s->session != NULL) { 2610 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2611 SSL_copy_session_id(ret, s); 2612 } else { 2613 /* 2614 * No session has been established yet, so we have to expect 2615 * that s->cert or ret->cert will be changed later -- 2616 * they should not both point to the same object, 2617 * and thus we can't use SSL_copy_session_id. 2618 */ 2619 2620 ret->method->ssl_free(ret); 2621 ret->method = s->method; 2622 ret->method->ssl_new(ret); 2623 2624 if (s->cert != NULL) { 2625 if (ret->cert != NULL) { 2626 ssl_cert_free(ret->cert); 2627 } 2628 ret->cert = ssl_cert_dup(s->cert); 2629 if (ret->cert == NULL) 2630 goto err; 2631 } 2632 2633 SSL_set_session_id_context(ret, 2634 s->sid_ctx, s->sid_ctx_length); 2635 } 2636 2637 ret->options = s->options; 2638 ret->mode = s->mode; 2639 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2640 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2641 ret->msg_callback = s->msg_callback; 2642 ret->msg_callback_arg = s->msg_callback_arg; 2643 SSL_set_verify(ret, SSL_get_verify_mode(s), 2644 SSL_get_verify_callback(s)); 2645 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2646 ret->generate_session_id = s->generate_session_id; 2647 2648 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2649 2650 ret->debug = s->debug; 2651 2652 /* copy app data, a little dangerous perhaps */ 2653 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2654 &ret->ex_data, &s->ex_data)) 2655 goto err; 2656 2657 /* setup rbio, and wbio */ 2658 if (s->rbio != NULL) { 2659 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2660 goto err; 2661 } 2662 if (s->wbio != NULL) { 2663 if (s->wbio != s->rbio) { 2664 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2665 goto err; 2666 } else 2667 ret->wbio = ret->rbio; 2668 } 2669 ret->rwstate = s->rwstate; 2670 ret->in_handshake = s->in_handshake; 2671 ret->handshake_func = s->handshake_func; 2672 ret->server = s->server; 2673 ret->renegotiate = s->renegotiate; 2674 ret->new_session = s->new_session; 2675 ret->quiet_shutdown = s->quiet_shutdown; 2676 ret->shutdown = s->shutdown; 2677 /* SSL_dup does not really work at any state, though */ 2678 ret->state=s->state; 2679 ret->rstate = s->rstate; 2680 2681 /* 2682 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2683 * ret->init_off 2684 */ 2685 ret->init_num = 0; 2686 2687 ret->hit = s->hit; 2688 2689 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2690 2691 /* dup the cipher_list and cipher_list_by_id stacks */ 2692 if (s->cipher_list != NULL) { 2693 if ((ret->cipher_list = 2694 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2695 goto err; 2696 } 2697 if (s->cipher_list_by_id != NULL) { 2698 if ((ret->cipher_list_by_id = 2699 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2700 goto err; 2701 } 2702 2703 /* Dup the client_CA list */ 2704 if (s->client_CA != NULL) { 2705 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2706 ret->client_CA = sk; 2707 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2708 xn = sk_X509_NAME_value(sk, i); 2709 if (sk_X509_NAME_set(sk, i, 2710 X509_NAME_dup(xn)) == NULL) { 2711 X509_NAME_free(xn); 2712 goto err; 2713 } 2714 } 2715 } 2716 2717 if (0) { 2718 err: 2719 if (ret != NULL) 2720 SSL_free(ret); 2721 ret = NULL; 2722 } 2723 return (ret); 2724} 2725 2726void 2727ssl_clear_cipher_ctx(SSL *s) 2728{ 2729 if (s->enc_read_ctx != NULL) { 2730 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2731 free(s->enc_read_ctx); 2732 s->enc_read_ctx = NULL; 2733 } 2734 if (s->enc_write_ctx != NULL) { 2735 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2736 free(s->enc_write_ctx); 2737 s->enc_write_ctx = NULL; 2738 } 2739#ifndef OPENSSL_NO_COMP 2740 if (s->expand != NULL) { 2741 COMP_CTX_free(s->expand); 2742 s->expand = NULL; 2743 } 2744 if (s->compress != NULL) { 2745 COMP_CTX_free(s->compress); 2746 s->compress = NULL; 2747 } 2748#endif 2749} 2750 2751/* Fix this function so that it takes an optional type parameter */ 2752X509 * 2753SSL_get_certificate(const SSL *s) 2754{ 2755 if (s->cert != NULL) 2756 return (s->cert->key->x509); 2757 else 2758 return (NULL); 2759} 2760 2761/* Fix this function so that it takes an optional type parameter */ 2762EVP_PKEY * 2763SSL_get_privatekey(SSL *s) 2764{ 2765 if (s->cert != NULL) 2766 return (s->cert->key->privatekey); 2767 else 2768 return (NULL); 2769} 2770 2771const SSL_CIPHER * 2772SSL_get_current_cipher(const SSL *s) 2773{ 2774 if ((s->session != NULL) && (s->session->cipher != NULL)) 2775 return (s->session->cipher); 2776 return (NULL); 2777} 2778#ifdef OPENSSL_NO_COMP 2779const void * 2780SSL_get_current_compression(SSL *s) 2781{ 2782 return (NULL); 2783} 2784 2785const void * 2786SSL_get_current_expansion(SSL *s) 2787{ 2788 return (NULL); 2789} 2790#else 2791 2792const COMP_METHOD * 2793SSL_get_current_compression(SSL *s) 2794{ 2795 if (s->compress != NULL) 2796 return (s->compress->meth); 2797 return (NULL); 2798} 2799 2800const COMP_METHOD * 2801SSL_get_current_expansion(SSL *s) 2802{ 2803 if (s->expand != NULL) 2804 return (s->expand->meth); 2805 return (NULL); 2806} 2807#endif 2808 2809int 2810ssl_init_wbio_buffer(SSL *s, int push) 2811{ 2812 BIO *bbio; 2813 2814 if (s->bbio == NULL) { 2815 bbio = BIO_new(BIO_f_buffer()); 2816 if (bbio == NULL) 2817 return (0); 2818 s->bbio = bbio; 2819 } else { 2820 bbio = s->bbio; 2821 if (s->bbio == s->wbio) 2822 s->wbio = BIO_pop(s->wbio); 2823 } 2824 (void)BIO_reset(bbio); 2825/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2826 if (!BIO_set_read_buffer_size(bbio, 1)) { 2827 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2828 ERR_R_BUF_LIB); 2829 return (0); 2830 } 2831 if (push) { 2832 if (s->wbio != bbio) 2833 s->wbio = BIO_push(bbio, s->wbio); 2834 } else { 2835 if (s->wbio == bbio) 2836 s->wbio = BIO_pop(bbio); 2837 } 2838 return (1); 2839} 2840 2841void 2842ssl_free_wbio_buffer(SSL *s) 2843{ 2844 if (s->bbio == NULL) 2845 return; 2846 2847 if (s->bbio == s->wbio) { 2848 /* remove buffering */ 2849 s->wbio = BIO_pop(s->wbio); 2850 } 2851 BIO_free(s->bbio); 2852 s->bbio = NULL; 2853} 2854 2855void 2856SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2857{ 2858 ctx->quiet_shutdown = mode; 2859} 2860 2861int 2862SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2863{ 2864 return (ctx->quiet_shutdown); 2865} 2866 2867void 2868SSL_set_quiet_shutdown(SSL *s, int mode) 2869{ 2870 s->quiet_shutdown = mode; 2871} 2872 2873int 2874SSL_get_quiet_shutdown(const SSL *s) 2875{ 2876 return (s->quiet_shutdown); 2877} 2878 2879void 2880SSL_set_shutdown(SSL *s, int mode) 2881{ 2882 s->shutdown = mode; 2883} 2884 2885int 2886SSL_get_shutdown(const SSL *s) 2887{ 2888 return (s->shutdown); 2889} 2890 2891int 2892SSL_version(const SSL *s) 2893{ 2894 return (s->version); 2895} 2896 2897SSL_CTX * 2898SSL_get_SSL_CTX(const SSL *ssl) 2899{ 2900 return (ssl->ctx); 2901} 2902 2903SSL_CTX * 2904SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2905{ 2906 if (ssl->ctx == ctx) 2907 return (ssl->ctx); 2908#ifndef OPENSSL_NO_TLSEXT 2909 if (ctx == NULL) 2910 ctx = ssl->initial_ctx; 2911#endif 2912 if (ssl->cert != NULL) 2913 ssl_cert_free(ssl->cert); 2914 ssl->cert = ssl_cert_dup(ctx->cert); 2915 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2916 if (ssl->ctx != NULL) 2917 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2918 ssl->ctx = ctx; 2919 return (ssl->ctx); 2920} 2921 2922#ifndef OPENSSL_NO_STDIO 2923int 2924SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2925{ 2926 return (X509_STORE_set_default_paths(ctx->cert_store)); 2927} 2928 2929int 2930SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2931 const char *CApath) 2932{ 2933 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2934} 2935#endif 2936 2937void 2938SSL_set_info_callback(SSL *ssl, 2939 void (*cb)(const SSL *ssl, int type, int val)) 2940{ 2941 ssl->info_callback = cb; 2942} 2943 2944void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2945{ 2946 return (ssl->info_callback); 2947} 2948 2949int 2950SSL_state(const SSL *ssl) 2951{ 2952 return (ssl->state); 2953} 2954 2955void 2956SSL_set_state(SSL *ssl, int state) 2957{ 2958 ssl->state = state; 2959} 2960 2961void 2962SSL_set_verify_result(SSL *ssl, long arg) 2963{ 2964 ssl->verify_result = arg; 2965} 2966 2967long 2968SSL_get_verify_result(const SSL *ssl) 2969{ 2970 return (ssl->verify_result); 2971} 2972 2973int 2974SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2975 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2976{ 2977 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2978 new_func, dup_func, free_func)); 2979} 2980 2981int 2982SSL_set_ex_data(SSL *s, int idx, void *arg) 2983{ 2984 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2985} 2986 2987void * 2988SSL_get_ex_data(const SSL *s, int idx) 2989{ 2990 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2991} 2992 2993int 2994SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2995 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2996{ 2997 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2998 new_func, dup_func, free_func)); 2999} 3000 3001int 3002SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3003{ 3004 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3005} 3006 3007void * 3008SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3009{ 3010 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3011} 3012 3013int 3014ssl_ok(SSL *s) 3015{ 3016 return (1); 3017} 3018 3019X509_STORE * 3020SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3021{ 3022 return (ctx->cert_store); 3023} 3024 3025void 3026SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3027{ 3028 if (ctx->cert_store != NULL) 3029 X509_STORE_free(ctx->cert_store); 3030 ctx->cert_store = store; 3031} 3032 3033int 3034SSL_want(const SSL *s) 3035{ 3036 return (s->rwstate); 3037} 3038 3039/*! 3040 * \brief Set the callback for generating temporary RSA keys. 3041 * \param ctx the SSL context. 3042 * \param cb the callback 3043 */ 3044 3045void 3046SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 3047 int is_export, 3048int keylength)) 3049{ 3050 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3051} 3052 3053void 3054SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 3055 int is_export, 3056int keylength)) 3057{ 3058 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3059} 3060 3061#ifdef DOXYGEN 3062/*! 3063 * \brief The RSA temporary key callback function. 3064 * \param ssl the SSL session. 3065 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3066 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3067 * of the required key in bits. 3068 * \return the temporary RSA key. 3069 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3070 */ 3071 3072RSA * 3073cb(SSL *ssl, int is_export, int keylength) 3074{} 3075#endif 3076 3077/*! 3078 * \brief Set the callback for generating temporary DH keys. 3079 * \param ctx the SSL context. 3080 * \param dh the callback 3081 */ 3082 3083#ifndef OPENSSL_NO_DH 3084void 3085SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3086 int keylength)) 3087{ 3088 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3089} 3090 3091void 3092SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3093 int keylength)) 3094{ 3095 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3096} 3097#endif 3098 3099#ifndef OPENSSL_NO_ECDH 3100void 3101SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3102 int is_export, int keylength)) 3103{ 3104 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3105 (void (*)(void))ecdh); 3106} 3107 3108void 3109SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3110 int keylength)) 3111{ 3112 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3113} 3114#endif 3115 3116#ifndef OPENSSL_NO_PSK 3117int 3118SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3119{ 3120 if (identity_hint != NULL && strlen(identity_hint) > 3121 PSK_MAX_IDENTITY_LEN) { 3122 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3123 SSL_R_DATA_LENGTH_TOO_LONG); 3124 return (0); 3125 } 3126 free(ctx->psk_identity_hint); 3127 if (identity_hint != NULL) { 3128 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3129 if (ctx->psk_identity_hint == NULL) 3130 return (0); 3131 } else 3132 ctx->psk_identity_hint = NULL; 3133 return (1); 3134} 3135 3136int 3137SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3138{ 3139 if (s == NULL) 3140 return (0); 3141 3142 if (s->session == NULL) 3143 return (1); /* session not created yet, ignored */ 3144 3145 if (identity_hint != NULL && strlen(identity_hint) > 3146 PSK_MAX_IDENTITY_LEN) { 3147 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 3148 SSL_R_DATA_LENGTH_TOO_LONG); 3149 return (0); 3150 } 3151 free(s->session->psk_identity_hint); 3152 if (identity_hint != NULL) { 3153 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3154 if (s->session->psk_identity_hint == NULL) 3155 return (0); 3156 } else 3157 s->session->psk_identity_hint = NULL; 3158 return (1); 3159} 3160 3161const char * 3162SSL_get_psk_identity_hint(const SSL *s) 3163{ 3164 if (s == NULL || s->session == NULL) 3165 return (NULL); 3166 return (s->session->psk_identity_hint); 3167} 3168 3169const char * 3170SSL_get_psk_identity(const SSL *s) 3171{ 3172 if (s == NULL || s->session == NULL) 3173 return (NULL); 3174 return (s->session->psk_identity); 3175} 3176 3177void 3178SSL_set_psk_client_callback(SSL *s, 3179 unsigned int (*cb)(SSL *ssl, const char *hint, 3180 char *identity, unsigned int max_identity_len, unsigned char *psk, 3181 unsigned int max_psk_len)) 3182{ 3183 s->psk_client_callback = cb; 3184} 3185 3186void 3187SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3188 unsigned int (*cb)(SSL *ssl, const char *hint, 3189 char *identity, unsigned int max_identity_len, unsigned char *psk, 3190 unsigned int max_psk_len)) 3191{ 3192 ctx->psk_client_callback = cb; 3193} 3194 3195void 3196SSL_set_psk_server_callback(SSL *s, 3197 unsigned int (*cb)(SSL *ssl, const char *identity, 3198 unsigned char *psk, unsigned int max_psk_len)) 3199{ 3200 s->psk_server_callback = cb; 3201} 3202 3203void 3204SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3205 unsigned int (*cb)(SSL *ssl, const char *identity, 3206 unsigned char *psk, unsigned int max_psk_len)) 3207{ 3208 ctx->psk_server_callback = cb; 3209} 3210#endif 3211 3212void 3213SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3214 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3215{ 3216 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3217 (void (*)(void))cb); 3218} 3219 3220void 3221SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3222 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3223{ 3224 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3225} 3226 3227/* 3228 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3229 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3230 * any. If EVP_MD pointer is passed, initializes ctx with this md 3231 * Returns newly allocated ctx; 3232 */ 3233EVP_MD_CTX * 3234ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3235{ 3236 ssl_clear_hash_ctx(hash); 3237 *hash = EVP_MD_CTX_create(); 3238 if (*hash != NULL && md != NULL) 3239 EVP_DigestInit_ex(*hash, md, NULL); 3240 return (*hash); 3241} 3242 3243void 3244ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3245{ 3246 if (*hash) 3247 EVP_MD_CTX_destroy(*hash); 3248 *hash = NULL; 3249} 3250 3251void 3252SSL_set_debug(SSL *s, int debug) 3253{ 3254 s->debug = debug; 3255} 3256 3257int 3258SSL_cache_hit(SSL *s) 3259{ 3260 return (s->hit); 3261} 3262 3263IMPLEMENT_STACK_OF(SSL_CIPHER) 3264IMPLEMENT_STACK_OF(SSL_COMP) 3265IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3266 ssl_cipher_id); 3267