ssl_lib.c revision 1.81
1/* $OpenBSD: ssl_lib.c,v 1.81 2014/08/11 10:46:19 jsing Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <stdio.h> 144#include "ssl_locl.h" 145#include <openssl/objects.h> 146#include <openssl/lhash.h> 147#include <openssl/x509v3.h> 148#include <openssl/rand.h> 149#include <openssl/ocsp.h> 150#include <openssl/dh.h> 151#ifndef OPENSSL_NO_ENGINE 152#include <openssl/engine.h> 153#endif 154 155const char *SSL_version_str = OPENSSL_VERSION_TEXT; 156 157SSL3_ENC_METHOD ssl3_undef_enc_method = { 158 /* 159 * Evil casts, but these functions are only called if there's a 160 * library bug. 161 */ 162 .enc = (int (*)(SSL *, int))ssl_undefined_function, 163 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 164 .setup_key_block = ssl_undefined_function, 165 .generate_master_secret = (int (*)(SSL *, unsigned char *, 166 unsigned char *, int))ssl_undefined_function, 167 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 168 .final_finish_mac = (int (*)(SSL *, const char*, int, 169 unsigned char *))ssl_undefined_function, 170 .finish_mac_length = 0, 171 .cert_verify_mac = (int (*)(SSL *, int, 172 unsigned char *))ssl_undefined_function, 173 .client_finished_label = NULL, 174 .client_finished_label_len = 0, 175 .server_finished_label = NULL, 176 .server_finished_label_len = 0, 177 .alert_value = (int (*)(int))ssl_undefined_function, 178 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 179 const char *, size_t, const unsigned char *, size_t, 180 int use_context))ssl_undefined_function, 181 .enc_flags = 0, 182}; 183 184int 185SSL_clear(SSL *s) 186{ 187 if (s->method == NULL) { 188 SSLerr(SSL_F_SSL_CLEAR, 189 SSL_R_NO_METHOD_SPECIFIED); 190 return (0); 191 } 192 193 if (ssl_clear_bad_session(s)) { 194 SSL_SESSION_free(s->session); 195 s->session = NULL; 196 } 197 198 s->error = 0; 199 s->hit = 0; 200 s->shutdown = 0; 201 202 if (s->renegotiate) { 203 SSLerr(SSL_F_SSL_CLEAR, 204 ERR_R_INTERNAL_ERROR); 205 return (0); 206 } 207 208 s->type = 0; 209 210 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 211 212 s->version = s->method->version; 213 s->client_version = s->version; 214 s->rwstate = SSL_NOTHING; 215 s->rstate = SSL_ST_READ_HEADER; 216 217 if (s->init_buf != NULL) { 218 BUF_MEM_free(s->init_buf); 219 s->init_buf = NULL; 220 } 221 222 ssl_clear_cipher_ctx(s); 223 ssl_clear_hash_ctx(&s->read_hash); 224 ssl_clear_hash_ctx(&s->write_hash); 225 226 s->first_packet = 0; 227 228 /* 229 * Check to see if we were changed into a different method, if 230 * so, revert back if we are not doing session-id reuse. 231 */ 232 if (!s->in_handshake && (s->session == NULL) && 233 (s->method != s->ctx->method)) { 234 s->method->ssl_free(s); 235 s->method = s->ctx->method; 236 if (!s->method->ssl_new(s)) 237 return (0); 238 } else 239 s->method->ssl_clear(s); 240 return (1); 241} 242 243/* Used to change an SSL_CTXs default SSL method type */ 244int 245SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 246{ 247 STACK_OF(SSL_CIPHER) *sk; 248 249 ctx->method = meth; 250 251 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 252 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 253 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 254 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 255 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 256 return (0); 257 } 258 return (1); 259} 260 261SSL * 262SSL_new(SSL_CTX *ctx) 263{ 264 SSL *s; 265 266 if (ctx == NULL) { 267 SSLerr(SSL_F_SSL_NEW, 268 SSL_R_NULL_SSL_CTX); 269 return (NULL); 270 } 271 if (ctx->method == NULL) { 272 SSLerr(SSL_F_SSL_NEW, 273 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 274 return (NULL); 275 } 276 277 s = calloc(1, sizeof(SSL)); 278 if (s == NULL) 279 goto err; 280 281 282 s->options = ctx->options; 283 s->mode = ctx->mode; 284 s->max_cert_list = ctx->max_cert_list; 285 286 if (ctx->cert != NULL) { 287 /* 288 * Earlier library versions used to copy the pointer to 289 * the CERT, not its contents; only when setting new 290 * parameters for the per-SSL copy, ssl_cert_new would be 291 * called (and the direct reference to the per-SSL_CTX 292 * settings would be lost, but those still were indirectly 293 * accessed for various purposes, and for that reason they 294 * used to be known as s->ctx->default_cert). 295 * Now we don't look at the SSL_CTX's CERT after having 296 * duplicated it once. 297 */ 298 s->cert = ssl_cert_dup(ctx->cert); 299 if (s->cert == NULL) 300 goto err; 301 } else 302 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 303 304 s->read_ahead = ctx->read_ahead; 305 s->msg_callback = ctx->msg_callback; 306 s->msg_callback_arg = ctx->msg_callback_arg; 307 s->verify_mode = ctx->verify_mode; 308 s->sid_ctx_length = ctx->sid_ctx_length; 309 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 310 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 311 s->verify_callback = ctx->default_verify_callback; 312 s->generate_session_id = ctx->generate_session_id; 313 314 s->param = X509_VERIFY_PARAM_new(); 315 if (!s->param) 316 goto err; 317 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 318 s->quiet_shutdown = ctx->quiet_shutdown; 319 s->max_send_fragment = ctx->max_send_fragment; 320 321 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 322 s->ctx = ctx; 323 s->tlsext_debug_cb = 0; 324 s->tlsext_debug_arg = NULL; 325 s->tlsext_ticket_expected = 0; 326 s->tlsext_status_type = -1; 327 s->tlsext_status_expected = 0; 328 s->tlsext_ocsp_ids = NULL; 329 s->tlsext_ocsp_exts = NULL; 330 s->tlsext_ocsp_resp = NULL; 331 s->tlsext_ocsp_resplen = -1; 332 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 333 s->initial_ctx = ctx; 334# ifndef OPENSSL_NO_NEXTPROTONEG 335 s->next_proto_negotiated = NULL; 336# endif 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 342 if (!s->method->ssl_new(s)) 343 goto err; 344 345 s->references = 1; 346 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 347 348 SSL_clear(s); 349 350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 351 352 353 return (s); 354err: 355 if (s != NULL) { 356 if (s->cert != NULL) 357 ssl_cert_free(s->cert); 358 SSL_CTX_free(s->ctx); /* decrement reference count */ 359 free(s); 360 } 361 SSLerr(SSL_F_SSL_NEW, 362 ERR_R_MALLOC_FAILURE); 363 return (NULL); 364} 365 366int 367SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 368 unsigned int sid_ctx_len) 369{ 370 if (sid_ctx_len > sizeof ctx->sid_ctx) { 371 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 372 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 373 return (0); 374 } 375 ctx->sid_ctx_length = sid_ctx_len; 376 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 377 378 return (1); 379} 380 381int 382SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 383 unsigned int sid_ctx_len) 384{ 385 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 386 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 387 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 388 return (0); 389 } 390 ssl->sid_ctx_length = sid_ctx_len; 391 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 392 393 return (1); 394} 395 396int 397SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 398{ 399 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 400 ctx->generate_session_id = cb; 401 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 402 return (1); 403} 404 405int 406SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 407{ 408 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 409 ssl->generate_session_id = cb; 410 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 411 return (1); 412} 413 414int 415SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 416 unsigned int id_len) 417{ 418 /* 419 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 420 * shows how we can "construct" a session to give us the desired 421 * check - ie. to find if there's a session in the hash table 422 * that would conflict with any new session built out of this 423 * id/id_len and the ssl_version in use by this SSL. 424 */ 425 SSL_SESSION r, *p; 426 427 if (id_len > sizeof r.session_id) 428 return (0); 429 430 r.ssl_version = ssl->version; 431 r.session_id_length = id_len; 432 memcpy(r.session_id, id, id_len); 433 434 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 435 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 436 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 437 return (p != NULL); 438} 439 440int 441SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 442{ 443 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 444} 445 446int 447SSL_set_purpose(SSL *s, int purpose) 448{ 449 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 450} 451 452int 453SSL_CTX_set_trust(SSL_CTX *s, int trust) 454{ 455 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 456} 457 458int 459SSL_set_trust(SSL *s, int trust) 460{ 461 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 462} 463 464int 465SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 466{ 467 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 468} 469 470int 471SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 472{ 473 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 474} 475 476void 477SSL_free(SSL *s) 478{ 479 int i; 480 481 if (s == NULL) 482 return; 483 484 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 485 if (i > 0) 486 return; 487 488 if (s->param) 489 X509_VERIFY_PARAM_free(s->param); 490 491 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 492 493 if (s->bbio != NULL) { 494 /* If the buffering BIO is in place, pop it off */ 495 if (s->bbio == s->wbio) { 496 s->wbio = BIO_pop(s->wbio); 497 } 498 BIO_free(s->bbio); 499 s->bbio = NULL; 500 } 501 if (s->rbio != NULL) 502 BIO_free_all(s->rbio); 503 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 504 BIO_free_all(s->wbio); 505 506 if (s->init_buf != NULL) 507 BUF_MEM_free(s->init_buf); 508 509 /* add extra stuff */ 510 if (s->cipher_list != NULL) 511 sk_SSL_CIPHER_free(s->cipher_list); 512 if (s->cipher_list_by_id != NULL) 513 sk_SSL_CIPHER_free(s->cipher_list_by_id); 514 515 /* Make the next call work :-) */ 516 if (s->session != NULL) { 517 ssl_clear_bad_session(s); 518 SSL_SESSION_free(s->session); 519 } 520 521 ssl_clear_cipher_ctx(s); 522 ssl_clear_hash_ctx(&s->read_hash); 523 ssl_clear_hash_ctx(&s->write_hash); 524 525 if (s->cert != NULL) 526 ssl_cert_free(s->cert); 527 /* Free up if allocated */ 528 529 free(s->tlsext_hostname); 530 SSL_CTX_free(s->initial_ctx); 531 free(s->tlsext_ecpointformatlist); 532 free(s->tlsext_ellipticcurvelist); 533 if (s->tlsext_ocsp_exts) 534 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 535 X509_EXTENSION_free); 536 if (s->tlsext_ocsp_ids) 537 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 538 free(s->tlsext_ocsp_resp); 539 540 if (s->client_CA != NULL) 541 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 542 543 if (s->method != NULL) 544 s->method->ssl_free(s); 545 546 SSL_CTX_free(s->ctx); 547 548 549#ifndef OPENSSL_NO_NEXTPROTONEG 550 free(s->next_proto_negotiated); 551#endif 552 553#ifndef OPENSSL_NO_SRTP 554 if (s->srtp_profiles) 555 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 556#endif 557 558 free(s); 559} 560 561void 562SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 563{ 564 /* If the output buffering BIO is still in place, remove it */ 565 if (s->bbio != NULL) { 566 if (s->wbio == s->bbio) { 567 s->wbio = s->wbio->next_bio; 568 s->bbio->next_bio = NULL; 569 } 570 } 571 if ((s->rbio != NULL) && (s->rbio != rbio)) 572 BIO_free_all(s->rbio); 573 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 574 BIO_free_all(s->wbio); 575 s->rbio = rbio; 576 s->wbio = wbio; 577} 578 579BIO * 580SSL_get_rbio(const SSL *s) 581{ 582 return (s->rbio); 583} 584 585BIO * 586SSL_get_wbio(const SSL *s) 587{ 588 return (s->wbio); 589} 590 591int 592SSL_get_fd(const SSL *s) 593{ 594 return (SSL_get_rfd(s)); 595} 596 597int 598SSL_get_rfd(const SSL *s) 599{ 600 int ret = -1; 601 BIO *b, *r; 602 603 b = SSL_get_rbio(s); 604 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 605 if (r != NULL) 606 BIO_get_fd(r, &ret); 607 return (ret); 608} 609 610int 611SSL_get_wfd(const SSL *s) 612{ 613 int ret = -1; 614 BIO *b, *r; 615 616 b = SSL_get_wbio(s); 617 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 618 if (r != NULL) 619 BIO_get_fd(r, &ret); 620 return (ret); 621} 622 623int 624SSL_set_fd(SSL *s, int fd) 625{ 626 int ret = 0; 627 BIO *bio = NULL; 628 629 bio = BIO_new(BIO_s_socket()); 630 631 if (bio == NULL) { 632 SSLerr(SSL_F_SSL_SET_FD, 633 ERR_R_BUF_LIB); 634 goto err; 635 } 636 BIO_set_fd(bio, fd, BIO_NOCLOSE); 637 SSL_set_bio(s, bio, bio); 638 ret = 1; 639err: 640 return (ret); 641} 642 643int 644SSL_set_wfd(SSL *s, int fd) 645{ 646 int ret = 0; 647 BIO *bio = NULL; 648 649 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 650 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 651 bio = BIO_new(BIO_s_socket()); 652 653 if (bio == NULL) { 654 SSLerr(SSL_F_SSL_SET_WFD, 655 ERR_R_BUF_LIB); 656 goto err; 657 } 658 BIO_set_fd(bio, fd, BIO_NOCLOSE); 659 SSL_set_bio(s, SSL_get_rbio(s), bio); 660 } else 661 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 662 ret = 1; 663err: 664 return (ret); 665} 666 667int 668SSL_set_rfd(SSL *s, int fd) 669{ 670 int ret = 0; 671 BIO *bio = NULL; 672 673 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 674 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 675 bio = BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) { 678 SSLerr(SSL_F_SSL_SET_RFD, 679 ERR_R_BUF_LIB); 680 goto err; 681 } 682 BIO_set_fd(bio, fd, BIO_NOCLOSE); 683 SSL_set_bio(s, bio, SSL_get_wbio(s)); 684 } else 685 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 686 ret = 1; 687err: 688 return (ret); 689} 690 691 692/* return length of latest Finished message we sent, copy to 'buf' */ 693size_t 694SSL_get_finished(const SSL *s, void *buf, size_t count) 695{ 696 size_t ret = 0; 697 698 if (s->s3 != NULL) { 699 ret = s->s3->tmp.finish_md_len; 700 if (count > ret) 701 count = ret; 702 memcpy(buf, s->s3->tmp.finish_md, count); 703 } 704 return (ret); 705} 706 707/* return length of latest Finished message we expected, copy to 'buf' */ 708size_t 709SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 710{ 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = s->s3->tmp.peer_finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, s->s3->tmp.peer_finish_md, count); 718 } 719 return (ret); 720} 721 722 723int 724SSL_get_verify_mode(const SSL *s) 725{ 726 return (s->verify_mode); 727} 728 729int 730SSL_get_verify_depth(const SSL *s) 731{ 732 return (X509_VERIFY_PARAM_get_depth(s->param)); 733} 734 735int 736(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 737{ 738 return (s->verify_callback); 739} 740 741int 742SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 743{ 744 return (ctx->verify_mode); 745} 746 747int 748SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 749{ 750 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 751} 752 753int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 754{ 755 return (ctx->default_verify_callback); 756} 757 758void 759SSL_set_verify(SSL *s, int mode, 760 int (*callback)(int ok, X509_STORE_CTX *ctx)) 761{ 762 s->verify_mode = mode; 763 if (callback != NULL) 764 s->verify_callback = callback; 765} 766 767void 768SSL_set_verify_depth(SSL *s, int depth) 769{ 770 X509_VERIFY_PARAM_set_depth(s->param, depth); 771} 772 773void 774SSL_set_read_ahead(SSL *s, int yes) 775{ 776 s->read_ahead = yes; 777} 778 779int 780SSL_get_read_ahead(const SSL *s) 781{ 782 return (s->read_ahead); 783} 784 785int 786SSL_pending(const SSL *s) 787{ 788 /* 789 * SSL_pending cannot work properly if read-ahead is enabled 790 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 791 * and it is impossible to fix since SSL_pending cannot report 792 * errors that may be observed while scanning the new data. 793 * (Note that SSL_pending() is often used as a boolean value, 794 * so we'd better not return -1.) 795 */ 796 return (s->method->ssl_pending(s)); 797} 798 799X509 * 800SSL_get_peer_certificate(const SSL *s) 801{ 802 X509 *r; 803 804 if ((s == NULL) || (s->session == NULL)) 805 r = NULL; 806 else 807 r = s->session->peer; 808 809 if (r == NULL) 810 return (r); 811 812 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 813 814 return (r); 815} 816 817STACK_OF(X509) * 818SSL_get_peer_cert_chain(const SSL *s) 819{ 820 STACK_OF(X509) *r; 821 822 if ((s == NULL) || (s->session == NULL) || 823 (s->session->sess_cert == NULL)) 824 r = NULL; 825 else 826 r = s->session->sess_cert->cert_chain; 827 828 /* 829 * If we are a client, cert_chain includes the peer's own 830 * certificate; 831 * if we are a server, it does not. 832 */ 833 return (r); 834} 835 836/* 837 * Now in theory, since the calling process own 't' it should be safe to 838 * modify. We need to be able to read f without being hassled 839 */ 840void 841SSL_copy_session_id(SSL *t, const SSL *f) 842{ 843 CERT *tmp; 844 845 /* Do we need to to SSL locking? */ 846 SSL_set_session(t, SSL_get_session(f)); 847 848 /* 849 * What if we are setup as SSLv2 but want to talk SSLv3 or 850 * vice-versa. 851 */ 852 if (t->method != f->method) { 853 t->method->ssl_free(t); /* cleanup current */ 854 t->method=f->method; /* change method */ 855 t->method->ssl_new(t); /* setup new */ 856 } 857 858 tmp = t->cert; 859 if (f->cert != NULL) { 860 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 861 t->cert = f->cert; 862 } else 863 t->cert = NULL; 864 if (tmp != NULL) 865 ssl_cert_free(tmp); 866 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 867} 868 869/* Fix this so it checks all the valid key/cert options */ 870int 871SSL_CTX_check_private_key(const SSL_CTX *ctx) 872{ 873 if ((ctx == NULL) || (ctx->cert == NULL) || 874 (ctx->cert->key->x509 == NULL)) { 875 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 876 SSL_R_NO_CERTIFICATE_ASSIGNED); 877 return (0); 878 } 879 if (ctx->cert->key->privatekey == NULL) { 880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 881 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 882 return (0); 883 } 884 return (X509_check_private_key(ctx->cert->key->x509, 885 ctx->cert->key->privatekey)); 886} 887 888/* Fix this function so that it takes an optional type parameter */ 889int 890SSL_check_private_key(const SSL *ssl) 891{ 892 if (ssl == NULL) { 893 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 894 ERR_R_PASSED_NULL_PARAMETER); 895 return (0); 896 } 897 if (ssl->cert == NULL) { 898 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 899 SSL_R_NO_CERTIFICATE_ASSIGNED); 900 return (0); 901 } 902 if (ssl->cert->key->x509 == NULL) { 903 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 904 SSL_R_NO_CERTIFICATE_ASSIGNED); 905 return (0); 906 } 907 if (ssl->cert->key->privatekey == NULL) { 908 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 909 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 910 return (0); 911 } 912 return (X509_check_private_key(ssl->cert->key->x509, 913 ssl->cert->key->privatekey)); 914} 915 916int 917SSL_accept(SSL *s) 918{ 919 if (s->handshake_func == 0) 920 SSL_set_accept_state(s); /* Not properly initialized yet */ 921 922 return (s->method->ssl_accept(s)); 923} 924 925int 926SSL_connect(SSL *s) 927{ 928 if (s->handshake_func == 0) 929 SSL_set_connect_state(s); /* Not properly initialized yet */ 930 931 return (s->method->ssl_connect(s)); 932} 933 934long 935SSL_get_default_timeout(const SSL *s) 936{ 937 return (s->method->get_timeout()); 938} 939 940int 941SSL_read(SSL *s, void *buf, int num) 942{ 943 if (s->handshake_func == 0) { 944 SSLerr(SSL_F_SSL_READ, 945 SSL_R_UNINITIALIZED); 946 return (-1); 947 } 948 949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 950 s->rwstate = SSL_NOTHING; 951 return (0); 952 } 953 return (s->method->ssl_read(s, buf, num)); 954} 955 956int 957SSL_peek(SSL *s, void *buf, int num) 958{ 959 if (s->handshake_func == 0) { 960 SSLerr(SSL_F_SSL_PEEK, 961 SSL_R_UNINITIALIZED); 962 return (-1); 963 } 964 965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 966 return (0); 967 } 968 return (s->method->ssl_peek(s, buf, num)); 969} 970 971int 972SSL_write(SSL *s, const void *buf, int num) 973{ 974 if (s->handshake_func == 0) { 975 SSLerr(SSL_F_SSL_WRITE, 976 SSL_R_UNINITIALIZED); 977 return (-1); 978 } 979 980 if (s->shutdown & SSL_SENT_SHUTDOWN) { 981 s->rwstate = SSL_NOTHING; 982 SSLerr(SSL_F_SSL_WRITE, 983 SSL_R_PROTOCOL_IS_SHUTDOWN); 984 return (-1); 985 } 986 return (s->method->ssl_write(s, buf, num)); 987} 988 989int 990SSL_shutdown(SSL *s) 991{ 992 /* 993 * Note that this function behaves differently from what one might 994 * expect. Return values are 0 for no success (yet), 995 * 1 for success; but calling it once is usually not enough, 996 * even if blocking I/O is used (see ssl3_shutdown). 997 */ 998 999 if (s->handshake_func == 0) { 1000 SSLerr(SSL_F_SSL_SHUTDOWN, 1001 SSL_R_UNINITIALIZED); 1002 return (-1); 1003 } 1004 1005 if ((s != NULL) && !SSL_in_init(s)) 1006 return (s->method->ssl_shutdown(s)); 1007 else 1008 return (1); 1009} 1010 1011int 1012SSL_renegotiate(SSL *s) 1013{ 1014 if (s->renegotiate == 0) 1015 s->renegotiate = 1; 1016 1017 s->new_session = 1; 1018 1019 return (s->method->ssl_renegotiate(s)); 1020} 1021 1022int 1023SSL_renegotiate_abbreviated(SSL *s) 1024{ 1025 if (s->renegotiate == 0) 1026 s->renegotiate = 1; 1027 1028 s->new_session = 0; 1029 1030 return (s->method->ssl_renegotiate(s)); 1031} 1032 1033int 1034SSL_renegotiate_pending(SSL *s) 1035{ 1036 /* 1037 * Becomes true when negotiation is requested; 1038 * false again once a handshake has finished. 1039 */ 1040 return (s->renegotiate != 0); 1041} 1042 1043long 1044SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1045{ 1046 long l; 1047 1048 switch (cmd) { 1049 case SSL_CTRL_GET_READ_AHEAD: 1050 return (s->read_ahead); 1051 case SSL_CTRL_SET_READ_AHEAD: 1052 l = s->read_ahead; 1053 s->read_ahead = larg; 1054 return (l); 1055 1056 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1057 s->msg_callback_arg = parg; 1058 return (1); 1059 1060 case SSL_CTRL_OPTIONS: 1061 return (s->options|=larg); 1062 case SSL_CTRL_CLEAR_OPTIONS: 1063 return (s->options&=~larg); 1064 case SSL_CTRL_MODE: 1065 return (s->mode|=larg); 1066 case SSL_CTRL_CLEAR_MODE: 1067 return (s->mode &=~larg); 1068 case SSL_CTRL_GET_MAX_CERT_LIST: 1069 return (s->max_cert_list); 1070 case SSL_CTRL_SET_MAX_CERT_LIST: 1071 l = s->max_cert_list; 1072 s->max_cert_list = larg; 1073 return (l); 1074 case SSL_CTRL_SET_MTU: 1075#ifndef OPENSSL_NO_DTLS1 1076 if (larg < (long)dtls1_min_mtu()) 1077 return (0); 1078#endif 1079 if (SSL_IS_DTLS(s)) { 1080 s->d1->mtu = larg; 1081 return (larg); 1082 } 1083 return (0); 1084 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1085 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1086 return (0); 1087 s->max_send_fragment = larg; 1088 return (1); 1089 case SSL_CTRL_GET_RI_SUPPORT: 1090 if (s->s3) 1091 return (s->s3->send_connection_binding); 1092 else return (0); 1093 default: 1094 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1095 } 1096} 1097 1098long 1099SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1100{ 1101 switch (cmd) { 1102 case SSL_CTRL_SET_MSG_CALLBACK: 1103 s->msg_callback = (void (*)(int write_p, int version, 1104 int content_type, const void *buf, size_t len, 1105 SSL *ssl, void *arg))(fp); 1106 return (1); 1107 1108 default: 1109 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1110 } 1111} 1112 1113LHASH_OF(SSL_SESSION) * 1114SSL_CTX_sessions(SSL_CTX *ctx) 1115{ 1116 return (ctx->sessions); 1117} 1118 1119long 1120SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1121{ 1122 long l; 1123 1124 switch (cmd) { 1125 case SSL_CTRL_GET_READ_AHEAD: 1126 return (ctx->read_ahead); 1127 case SSL_CTRL_SET_READ_AHEAD: 1128 l = ctx->read_ahead; 1129 ctx->read_ahead = larg; 1130 return (l); 1131 1132 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1133 ctx->msg_callback_arg = parg; 1134 return (1); 1135 1136 case SSL_CTRL_GET_MAX_CERT_LIST: 1137 return (ctx->max_cert_list); 1138 case SSL_CTRL_SET_MAX_CERT_LIST: 1139 l = ctx->max_cert_list; 1140 ctx->max_cert_list = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1144 l = ctx->session_cache_size; 1145 ctx->session_cache_size = larg; 1146 return (l); 1147 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1148 return (ctx->session_cache_size); 1149 case SSL_CTRL_SET_SESS_CACHE_MODE: 1150 l = ctx->session_cache_mode; 1151 ctx->session_cache_mode = larg; 1152 return (l); 1153 case SSL_CTRL_GET_SESS_CACHE_MODE: 1154 return (ctx->session_cache_mode); 1155 1156 case SSL_CTRL_SESS_NUMBER: 1157 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1158 case SSL_CTRL_SESS_CONNECT: 1159 return (ctx->stats.sess_connect); 1160 case SSL_CTRL_SESS_CONNECT_GOOD: 1161 return (ctx->stats.sess_connect_good); 1162 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1163 return (ctx->stats.sess_connect_renegotiate); 1164 case SSL_CTRL_SESS_ACCEPT: 1165 return (ctx->stats.sess_accept); 1166 case SSL_CTRL_SESS_ACCEPT_GOOD: 1167 return (ctx->stats.sess_accept_good); 1168 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1169 return (ctx->stats.sess_accept_renegotiate); 1170 case SSL_CTRL_SESS_HIT: 1171 return (ctx->stats.sess_hit); 1172 case SSL_CTRL_SESS_CB_HIT: 1173 return (ctx->stats.sess_cb_hit); 1174 case SSL_CTRL_SESS_MISSES: 1175 return (ctx->stats.sess_miss); 1176 case SSL_CTRL_SESS_TIMEOUTS: 1177 return (ctx->stats.sess_timeout); 1178 case SSL_CTRL_SESS_CACHE_FULL: 1179 return (ctx->stats.sess_cache_full); 1180 case SSL_CTRL_OPTIONS: 1181 return (ctx->options|=larg); 1182 case SSL_CTRL_CLEAR_OPTIONS: 1183 return (ctx->options&=~larg); 1184 case SSL_CTRL_MODE: 1185 return (ctx->mode|=larg); 1186 case SSL_CTRL_CLEAR_MODE: 1187 return (ctx->mode&=~larg); 1188 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1189 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1190 return (0); 1191 ctx->max_send_fragment = larg; 1192 return (1); 1193 default: 1194 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1195 } 1196} 1197 1198long 1199SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1200{ 1201 switch (cmd) { 1202 case SSL_CTRL_SET_MSG_CALLBACK: 1203 ctx->msg_callback = (void (*)(int write_p, int version, 1204 int content_type, const void *buf, size_t len, SSL *ssl, 1205 void *arg))(fp); 1206 return (1); 1207 1208 default: 1209 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1210 } 1211} 1212 1213int 1214ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1215{ 1216 long l; 1217 1218 l = a->id - b->id; 1219 if (l == 0L) 1220 return (0); 1221 else 1222 return ((l > 0) ? 1:-1); 1223} 1224 1225int 1226ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1227 const SSL_CIPHER * const *bp) 1228{ 1229 long l; 1230 1231 l = (*ap)->id - (*bp)->id; 1232 if (l == 0L) 1233 return (0); 1234 else 1235 return ((l > 0) ? 1:-1); 1236} 1237 1238/* 1239 * Return a STACK of the ciphers available for the SSL and in order of 1240 * preference. 1241 */ 1242STACK_OF(SSL_CIPHER) * 1243SSL_get_ciphers(const SSL *s) 1244{ 1245 if (s != NULL) { 1246 if (s->cipher_list != NULL) { 1247 return (s->cipher_list); 1248 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1249 return (s->ctx->cipher_list); 1250 } 1251 } 1252 return (NULL); 1253} 1254 1255/* 1256 * Return a STACK of the ciphers available for the SSL and in order of 1257 * algorithm id. 1258 */ 1259STACK_OF(SSL_CIPHER) * 1260ssl_get_ciphers_by_id(SSL *s) 1261{ 1262 if (s != NULL) { 1263 if (s->cipher_list_by_id != NULL) { 1264 return (s->cipher_list_by_id); 1265 } else if ((s->ctx != NULL) && 1266 (s->ctx->cipher_list_by_id != NULL)) { 1267 return (s->ctx->cipher_list_by_id); 1268 } 1269 } 1270 return (NULL); 1271} 1272 1273/* The old interface to get the same thing as SSL_get_ciphers(). */ 1274const char * 1275SSL_get_cipher_list(const SSL *s, int n) 1276{ 1277 SSL_CIPHER *c; 1278 STACK_OF(SSL_CIPHER) *sk; 1279 1280 if (s == NULL) 1281 return (NULL); 1282 sk = SSL_get_ciphers(s); 1283 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1284 return (NULL); 1285 c = sk_SSL_CIPHER_value(sk, n); 1286 if (c == NULL) 1287 return (NULL); 1288 return (c->name); 1289} 1290 1291/* Specify the ciphers to be used by default by the SSL_CTX. */ 1292int 1293SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1294{ 1295 STACK_OF(SSL_CIPHER) *sk; 1296 1297 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1298 &ctx->cipher_list_by_id, str); 1299 /* 1300 * ssl_create_cipher_list may return an empty stack if it 1301 * was unable to find a cipher matching the given rule string 1302 * (for example if the rule string specifies a cipher which 1303 * has been disabled). This is not an error as far as 1304 * ssl_create_cipher_list is concerned, and hence 1305 * ctx->cipher_list and ctx->cipher_list_by_id has been 1306 * updated. 1307 */ 1308 if (sk == NULL) 1309 return (0); 1310 else if (sk_SSL_CIPHER_num(sk) == 0) { 1311 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1312 SSL_R_NO_CIPHER_MATCH); 1313 return (0); 1314 } 1315 return (1); 1316} 1317 1318/* Specify the ciphers to be used by the SSL. */ 1319int 1320SSL_set_cipher_list(SSL *s, const char *str) 1321{ 1322 STACK_OF(SSL_CIPHER) *sk; 1323 1324 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1325 &s->cipher_list_by_id, str); 1326 /* see comment in SSL_CTX_set_cipher_list */ 1327 if (sk == NULL) 1328 return (0); 1329 else if (sk_SSL_CIPHER_num(sk) == 0) { 1330 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1331 SSL_R_NO_CIPHER_MATCH); 1332 return (0); 1333 } 1334 return (1); 1335} 1336 1337/* works well for SSLv2, not so good for SSLv3 */ 1338char * 1339SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1340{ 1341 char *end; 1342 STACK_OF(SSL_CIPHER) *sk; 1343 SSL_CIPHER *c; 1344 size_t curlen = 0; 1345 int i; 1346 1347 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1348 (len < 2)) 1349 return (NULL); 1350 1351 sk = s->session->ciphers; 1352 buf[0] = '\0'; 1353 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1354 c = sk_SSL_CIPHER_value(sk, i); 1355 end = buf + curlen; 1356 if (strlcat(buf, c->name, len) >= len || 1357 (curlen = strlcat(buf, ":", len)) >= len) { 1358 /* remove truncated cipher from list */ 1359 *end = '\0'; 1360 break; 1361 } 1362 } 1363 /* remove trailing colon */ 1364 if ((end = strrchr(buf, ':')) != NULL) 1365 *end = '\0'; 1366 return (buf); 1367} 1368 1369int 1370ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1371{ 1372 int i; 1373 SSL_CIPHER *c; 1374 unsigned char *q; 1375 1376 if (sk == NULL) 1377 return (0); 1378 q = p; 1379 1380 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1381 c = sk_SSL_CIPHER_value(sk, i); 1382 1383 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1384 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1385 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1386 continue; 1387 p += ssl3_put_cipher_by_char(c, p); 1388 } 1389 1390 /* 1391 * If p == q, no ciphers and caller indicates an error. Otherwise 1392 * add SCSV if not renegotiating. 1393 */ 1394 if (p != q && !s->renegotiate) { 1395 static SSL_CIPHER scsv = { 1396 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1397 }; 1398 p += ssl3_put_cipher_by_char(&scsv, p); 1399 } 1400 1401 return (p - q); 1402} 1403 1404STACK_OF(SSL_CIPHER) * 1405ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1406 STACK_OF(SSL_CIPHER) **skp) 1407{ 1408 const SSL_CIPHER *c; 1409 STACK_OF(SSL_CIPHER) *sk; 1410 int i; 1411 1412 if (s->s3) 1413 s->s3->send_connection_binding = 0; 1414 1415 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1416 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1417 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1418 return (NULL); 1419 } 1420 if (skp == NULL || *skp == NULL) { 1421 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1422 if (sk == NULL) 1423 goto err; 1424 } else { 1425 sk = *skp; 1426 sk_SSL_CIPHER_zero(sk); 1427 } 1428 1429 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1430 /* Check for SCSV */ 1431 if (s->s3 && (p[0] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1432 (p[1] == (SSL3_CK_SCSV & 0xff))) { 1433 /* SCSV fatal if renegotiating */ 1434 if (s->renegotiate) { 1435 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1436 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1437 ssl3_send_alert(s, SSL3_AL_FATAL, 1438 SSL_AD_HANDSHAKE_FAILURE); 1439 1440 goto err; 1441 } 1442 s->s3->send_connection_binding = 1; 1443 p += SSL3_CIPHER_VALUE_SIZE; 1444 continue; 1445 } 1446 1447 c = ssl3_get_cipher_by_char(p); 1448 p += SSL3_CIPHER_VALUE_SIZE; 1449 if (c != NULL) { 1450 if (!sk_SSL_CIPHER_push(sk, c)) { 1451 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1452 ERR_R_MALLOC_FAILURE); 1453 goto err; 1454 } 1455 } 1456 } 1457 1458 if (skp != NULL) 1459 *skp = sk; 1460 return (sk); 1461err: 1462 if ((skp == NULL) || (*skp == NULL)) 1463 sk_SSL_CIPHER_free(sk); 1464 return (NULL); 1465} 1466 1467 1468/* 1469 * Return a servername extension value if provided in Client Hello, or NULL. 1470 * So far, only host_name types are defined (RFC 3546). 1471 */ 1472const char * 1473SSL_get_servername(const SSL *s, const int type) 1474{ 1475 if (type != TLSEXT_NAMETYPE_host_name) 1476 return (NULL); 1477 1478 return (s->session && !s->tlsext_hostname ? 1479 s->session->tlsext_hostname : 1480 s->tlsext_hostname); 1481} 1482 1483int 1484SSL_get_servername_type(const SSL *s) 1485{ 1486 if (s->session && 1487 (!s->tlsext_hostname ? 1488 s->session->tlsext_hostname : s->tlsext_hostname)) 1489 return (TLSEXT_NAMETYPE_host_name); 1490 return (-1); 1491} 1492 1493# ifndef OPENSSL_NO_NEXTPROTONEG 1494/* 1495 * SSL_select_next_proto implements the standard protocol selection. It is 1496 * expected that this function is called from the callback set by 1497 * SSL_CTX_set_next_proto_select_cb. 1498 * 1499 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1500 * strings. The length byte itself is not included in the length. A byte 1501 * string of length 0 is invalid. No byte string may be truncated. 1502 * 1503 * The current, but experimental algorithm for selecting the protocol is: 1504 * 1505 * 1) If the server doesn't support NPN then this is indicated to the 1506 * callback. In this case, the client application has to abort the connection 1507 * or have a default application level protocol. 1508 * 1509 * 2) If the server supports NPN, but advertises an empty list then the 1510 * client selects the first protcol in its list, but indicates via the 1511 * API that this fallback case was enacted. 1512 * 1513 * 3) Otherwise, the client finds the first protocol in the server's list 1514 * that it supports and selects this protocol. This is because it's 1515 * assumed that the server has better information about which protocol 1516 * a client should use. 1517 * 1518 * 4) If the client doesn't support any of the server's advertised 1519 * protocols, then this is treated the same as case 2. 1520 * 1521 * It returns either 1522 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1523 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1524 */ 1525int 1526SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1527 const unsigned char *server, unsigned int server_len, 1528 const unsigned char *client, unsigned int client_len) 1529{ 1530 unsigned int i, j; 1531 const unsigned char *result; 1532 int status = OPENSSL_NPN_UNSUPPORTED; 1533 1534 /* 1535 * For each protocol in server preference order, 1536 * see if we support it. 1537 */ 1538 for (i = 0; i < server_len; ) { 1539 for (j = 0; j < client_len; ) { 1540 if (server[i] == client[j] && 1541 memcmp(&server[i + 1], 1542 &client[j + 1], server[i]) == 0) { 1543 /* We found a match */ 1544 result = &server[i]; 1545 status = OPENSSL_NPN_NEGOTIATED; 1546 goto found; 1547 } 1548 j += client[j]; 1549 j++; 1550 } 1551 i += server[i]; 1552 i++; 1553 } 1554 1555 /* There's no overlap between our protocols and the server's list. */ 1556 result = client; 1557 status = OPENSSL_NPN_NO_OVERLAP; 1558 1559found: 1560 *out = (unsigned char *) result + 1; 1561 *outlen = result[0]; 1562 return (status); 1563} 1564 1565/* 1566 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1567 * requested protocol for this connection and returns 0. If the client didn't 1568 * request any protocol, then *data is set to NULL. 1569 * 1570 * Note that the client can request any protocol it chooses. The value returned 1571 * from this function need not be a member of the list of supported protocols 1572 * provided by the callback. 1573 */ 1574void 1575SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1576 unsigned *len) 1577{ 1578 *data = s->next_proto_negotiated; 1579 if (!*data) { 1580 *len = 0; 1581 } else { 1582 *len = s->next_proto_negotiated_len; 1583 } 1584} 1585 1586/* 1587 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1588 * TLS server needs a list of supported protocols for Next Protocol 1589 * Negotiation. The returned list must be in wire format. The list is returned 1590 * by setting |out| to point to it and |outlen| to its length. This memory will 1591 * not be modified, but one should assume that the SSL* keeps a reference to 1592 * it. 1593 * 1594 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1595 * Otherwise, no such extension will be included in the ServerHello. 1596 */ 1597void 1598SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1599 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1600{ 1601 ctx->next_protos_advertised_cb = cb; 1602 ctx->next_protos_advertised_cb_arg = arg; 1603} 1604 1605/* 1606 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1607 * client needs to select a protocol from the server's provided list. |out| 1608 * must be set to point to the selected protocol (which may be within |in|). 1609 * The length of the protocol name must be written into |outlen|. The server's 1610 * advertised protocols are provided in |in| and |inlen|. The callback can 1611 * assume that |in| is syntactically valid. 1612 * 1613 * The client must select a protocol. It is fatal to the connection if this 1614 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1615 */ 1616void 1617SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1618 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1619 unsigned int inlen, void *arg), void *arg) 1620{ 1621 ctx->next_proto_select_cb = cb; 1622 ctx->next_proto_select_cb_arg = arg; 1623} 1624# endif 1625 1626int 1627SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1628 const char *label, size_t llen, const unsigned char *p, size_t plen, 1629 int use_context) 1630{ 1631 if (s->version < TLS1_VERSION) 1632 return (-1); 1633 1634 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1635 label, llen, p, plen, use_context)); 1636} 1637 1638static unsigned long 1639ssl_session_hash(const SSL_SESSION *a) 1640{ 1641 unsigned long l; 1642 1643 l = (unsigned long) 1644 ((unsigned int) a->session_id[0] )| 1645 ((unsigned int) a->session_id[1]<< 8L)| 1646 ((unsigned long)a->session_id[2]<<16L)| 1647 ((unsigned long)a->session_id[3]<<24L); 1648 return (l); 1649} 1650 1651/* 1652 * NB: If this function (or indeed the hash function which uses a sort of 1653 * coarser function than this one) is changed, ensure 1654 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1655 * able to construct an SSL_SESSION that will collide with any existing session 1656 * with a matching session ID. 1657 */ 1658static int 1659ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1660{ 1661 if (a->ssl_version != b->ssl_version) 1662 return (1); 1663 if (a->session_id_length != b->session_id_length) 1664 return (1); 1665 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1666 return (1); 1667 return (0); 1668} 1669 1670/* 1671 * These wrapper functions should remain rather than redeclaring 1672 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1673 * variable. The reason is that the functions aren't static, they're exposed via 1674 * ssl.h. 1675 */ 1676static 1677IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1678static 1679IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1680 1681SSL_CTX * 1682SSL_CTX_new(const SSL_METHOD *meth) 1683{ 1684 SSL_CTX *ret = NULL; 1685 1686 if (meth == NULL) { 1687 SSLerr(SSL_F_SSL_CTX_NEW, 1688 SSL_R_NULL_SSL_METHOD_PASSED); 1689 return (NULL); 1690 } 1691 1692 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1693 SSLerr(SSL_F_SSL_CTX_NEW, 1694 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1695 goto err; 1696 } 1697 ret = calloc(1, sizeof(SSL_CTX)); 1698 if (ret == NULL) 1699 goto err; 1700 1701 ret->method = meth; 1702 1703 ret->cert_store = NULL; 1704 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1705 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1706 ret->session_cache_head = NULL; 1707 ret->session_cache_tail = NULL; 1708 1709 /* We take the system default */ 1710 ret->session_timeout = meth->get_timeout(); 1711 1712 ret->new_session_cb = 0; 1713 ret->remove_session_cb = 0; 1714 ret->get_session_cb = 0; 1715 ret->generate_session_id = 0; 1716 1717 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1718 1719 ret->references = 1; 1720 ret->quiet_shutdown = 0; 1721 1722 ret->info_callback = NULL; 1723 1724 ret->app_verify_callback = 0; 1725 ret->app_verify_arg = NULL; 1726 1727 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1728 ret->read_ahead = 0; 1729 ret->msg_callback = 0; 1730 ret->msg_callback_arg = NULL; 1731 ret->verify_mode = SSL_VERIFY_NONE; 1732 ret->sid_ctx_length = 0; 1733 ret->default_verify_callback = NULL; 1734 if ((ret->cert = ssl_cert_new()) == NULL) 1735 goto err; 1736 1737 ret->default_passwd_callback = 0; 1738 ret->default_passwd_callback_userdata = NULL; 1739 ret->client_cert_cb = 0; 1740 ret->app_gen_cookie_cb = 0; 1741 ret->app_verify_cookie_cb = 0; 1742 1743 ret->sessions = lh_SSL_SESSION_new(); 1744 if (ret->sessions == NULL) 1745 goto err; 1746 ret->cert_store = X509_STORE_new(); 1747 if (ret->cert_store == NULL) 1748 goto err; 1749 1750 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1751 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1752 if (ret->cipher_list == NULL || 1753 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1754 SSLerr(SSL_F_SSL_CTX_NEW, 1755 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1756 goto err2; 1757 } 1758 1759 ret->param = X509_VERIFY_PARAM_new(); 1760 if (!ret->param) 1761 goto err; 1762 1763 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1764 SSLerr(SSL_F_SSL_CTX_NEW, 1765 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1766 goto err2; 1767 } 1768 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1769 SSLerr(SSL_F_SSL_CTX_NEW, 1770 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1771 goto err2; 1772 } 1773 1774 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1775 goto err; 1776 1777 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1778 1779 ret->extra_certs = NULL; 1780 1781 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1782 1783 ret->tlsext_servername_callback = 0; 1784 ret->tlsext_servername_arg = NULL; 1785 /* Setup RFC4507 ticket keys */ 1786 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1787 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1788 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1789 ret->options |= SSL_OP_NO_TICKET; 1790 1791 ret->tlsext_status_cb = 0; 1792 ret->tlsext_status_arg = NULL; 1793 1794# ifndef OPENSSL_NO_NEXTPROTONEG 1795 ret->next_protos_advertised_cb = 0; 1796 ret->next_proto_select_cb = 0; 1797# endif 1798#ifndef OPENSSL_NO_ENGINE 1799 ret->client_cert_engine = NULL; 1800#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1801#define eng_strx(x) #x 1802#define eng_str(x) eng_strx(x) 1803 /* Use specific client engine automatically... ignore errors */ 1804 { 1805 ENGINE *eng; 1806 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1807 if (!eng) { 1808 ERR_clear_error(); 1809 ENGINE_load_builtin_engines(); 1810 eng = ENGINE_by_id(eng_str( 1811 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1812 } 1813 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1814 ERR_clear_error(); 1815 } 1816#endif 1817#endif 1818 /* 1819 * Default is to connect to non-RI servers. When RI is more widely 1820 * deployed might change this. 1821 */ 1822 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1823 1824 return (ret); 1825err: 1826 SSLerr(SSL_F_SSL_CTX_NEW, 1827 ERR_R_MALLOC_FAILURE); 1828err2: 1829 SSL_CTX_free(ret); 1830 return (NULL); 1831} 1832 1833void 1834SSL_CTX_free(SSL_CTX *a) 1835{ 1836 int i; 1837 1838 if (a == NULL) 1839 return; 1840 1841 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1842 if (i > 0) 1843 return; 1844 1845 if (a->param) 1846 X509_VERIFY_PARAM_free(a->param); 1847 1848 /* 1849 * Free internal session cache. However: the remove_cb() may reference 1850 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1851 * after the sessions were flushed. 1852 * As the ex_data handling routines might also touch the session cache, 1853 * the most secure solution seems to be: empty (flush) the cache, then 1854 * free ex_data, then finally free the cache. 1855 * (See ticket [openssl.org #212].) 1856 */ 1857 if (a->sessions != NULL) 1858 SSL_CTX_flush_sessions(a, 0); 1859 1860 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1861 1862 if (a->sessions != NULL) 1863 lh_SSL_SESSION_free(a->sessions); 1864 1865 if (a->cert_store != NULL) 1866 X509_STORE_free(a->cert_store); 1867 if (a->cipher_list != NULL) 1868 sk_SSL_CIPHER_free(a->cipher_list); 1869 if (a->cipher_list_by_id != NULL) 1870 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1871 if (a->cert != NULL) 1872 ssl_cert_free(a->cert); 1873 if (a->client_CA != NULL) 1874 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1875 if (a->extra_certs != NULL) 1876 sk_X509_pop_free(a->extra_certs, X509_free); 1877 1878#ifndef OPENSSL_NO_SRTP 1879 if (a->srtp_profiles) 1880 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1881#endif 1882 1883#ifndef OPENSSL_NO_ENGINE 1884 if (a->client_cert_engine) 1885 ENGINE_finish(a->client_cert_engine); 1886#endif 1887 1888 free(a); 1889} 1890 1891void 1892SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1893{ 1894 ctx->default_passwd_callback = cb; 1895} 1896 1897void 1898SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1899{ 1900 ctx->default_passwd_callback_userdata = u; 1901} 1902 1903void 1904SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1905 void *), void *arg) 1906{ 1907 ctx->app_verify_callback = cb; 1908 ctx->app_verify_arg = arg; 1909} 1910 1911void 1912SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1913{ 1914 ctx->verify_mode = mode; 1915 ctx->default_verify_callback = cb; 1916} 1917 1918void 1919SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1920{ 1921 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1922} 1923 1924void 1925ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1926{ 1927 CERT_PKEY *cpk; 1928 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 1929 unsigned long mask_k, mask_a; 1930 int have_ecc_cert, ecdh_ok, ecdsa_ok; 1931 int have_ecdh_tmp; 1932 X509 *x = NULL; 1933 EVP_PKEY *ecc_pkey = NULL; 1934 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1935 1936 if (c == NULL) 1937 return; 1938 1939 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1940 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1941 1942 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1943 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1944 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1945 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1946 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1947 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1948 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1949 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 1950 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1951 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 1952/* FIX THIS EAY EAY EAY */ 1953 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1954 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1955 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1956 mask_k = 0; 1957 mask_a = 0; 1958 1959 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1960 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1961 mask_k |= SSL_kGOST; 1962 mask_a |= SSL_aGOST01; 1963 } 1964 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1965 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1966 mask_k |= SSL_kGOST; 1967 mask_a |= SSL_aGOST94; 1968 } 1969 1970 if (rsa_enc || (rsa_tmp && rsa_sign)) 1971 mask_k|=SSL_kRSA; 1972 1973 if (dh_tmp) 1974 mask_k|=SSL_kDHE; 1975 1976 if (dh_rsa) 1977 mask_k|=SSL_kDHr; 1978 1979 if (dh_dsa) 1980 mask_k|=SSL_kDHd; 1981 1982 if (rsa_enc || rsa_sign) 1983 mask_a|=SSL_aRSA; 1984 1985 if (dsa_sign) 1986 mask_a|=SSL_aDSS; 1987 1988 mask_a|=SSL_aNULL; 1989 1990 /* 1991 * An ECC certificate may be usable for ECDH and/or 1992 * ECDSA cipher suites depending on the key usage extension. 1993 */ 1994 if (have_ecc_cert) { 1995 /* This call populates extension flags (ex_flags) */ 1996 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1997 X509_check_purpose(x, -1, 0); 1998 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1999 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2000 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2001 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2002 ecc_pkey = X509_get_pubkey(x); 2003 EVP_PKEY_free(ecc_pkey); 2004 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2005 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2006 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2007 } 2008 if (ecdh_ok) { 2009 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2010 mask_k|=SSL_kECDHr; 2011 mask_a|=SSL_aECDH; 2012 } 2013 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2014 mask_k|=SSL_kECDHe; 2015 mask_a|=SSL_aECDH; 2016 } 2017 } 2018 if (ecdsa_ok) 2019 mask_a|=SSL_aECDSA; 2020 } 2021 2022 if (have_ecdh_tmp) { 2023 mask_k|=SSL_kECDHE; 2024 } 2025 2026 2027 c->mask_k = mask_k; 2028 c->mask_a = mask_a; 2029 c->valid = 1; 2030} 2031 2032/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2033#define ku_reject(x, usage) \ 2034 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2035 2036 2037int 2038ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2039{ 2040 unsigned long alg_k, alg_a; 2041 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2042 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2043 2044 alg_k = cs->algorithm_mkey; 2045 alg_a = cs->algorithm_auth; 2046 2047 /* This call populates the ex_flags field correctly */ 2048 X509_check_purpose(x, -1, 0); 2049 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2050 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2051 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2052 } 2053 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2054 /* key usage, if present, must allow key agreement */ 2055 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2056 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2057 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2058 return (0); 2059 } 2060 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2061 TLS1_2_VERSION) { 2062 /* signature alg must be ECDSA */ 2063 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2064 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2065 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2066 return (0); 2067 } 2068 } 2069 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2070 TLS1_2_VERSION) { 2071 /* signature alg must be RSA */ 2072 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2073 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2074 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2075 return (0); 2076 } 2077 } 2078 } 2079 if (alg_a & SSL_aECDSA) { 2080 /* key usage, if present, must allow signing */ 2081 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2082 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2083 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2084 return (0); 2085 } 2086 } 2087 2088 return (1); 2089 /* all checks are ok */ 2090} 2091 2092 2093/* THIS NEEDS CLEANING UP */ 2094CERT_PKEY * 2095ssl_get_server_send_pkey(const SSL *s) 2096{ 2097 unsigned long alg_k, alg_a; 2098 CERT *c; 2099 int i; 2100 2101 c = s->cert; 2102 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2103 2104 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2105 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2106 2107 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2108 /* 2109 * We don't need to look at SSL_kECDHE 2110 * since no certificate is needed for 2111 * anon ECDH and for authenticated 2112 * ECDHE, the check for the auth 2113 * algorithm will set i correctly 2114 * NOTE: For ECDH-RSA, we need an ECC 2115 * not an RSA cert but for EECDH-RSA 2116 * we need an RSA cert. Placing the 2117 * checks for SSL_kECDH before RSA 2118 * checks ensures the correct cert is chosen. 2119 */ 2120 i = SSL_PKEY_ECC; 2121 } else if (alg_a & SSL_aECDSA) { 2122 i = SSL_PKEY_ECC; 2123 } else if (alg_k & SSL_kDHr) { 2124 i = SSL_PKEY_DH_RSA; 2125 } else if (alg_k & SSL_kDHd) { 2126 i = SSL_PKEY_DH_DSA; 2127 } else if (alg_a & SSL_aDSS) { 2128 i = SSL_PKEY_DSA_SIGN; 2129 } else if (alg_a & SSL_aRSA) { 2130 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2131 i = SSL_PKEY_RSA_SIGN; 2132 else 2133 i = SSL_PKEY_RSA_ENC; 2134 } else if (alg_a & SSL_aGOST94) { 2135 i = SSL_PKEY_GOST94; 2136 } else if (alg_a & SSL_aGOST01) { 2137 i = SSL_PKEY_GOST01; 2138 } else { /* if (alg_a & SSL_aNULL) */ 2139 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2140 return (NULL); 2141 } 2142 2143 return (c->pkeys + i); 2144} 2145 2146X509 * 2147ssl_get_server_send_cert(const SSL *s) 2148{ 2149 CERT_PKEY *cpk; 2150 2151 cpk = ssl_get_server_send_pkey(s); 2152 if (!cpk) 2153 return (NULL); 2154 return (cpk->x509); 2155} 2156 2157EVP_PKEY * 2158ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2159{ 2160 unsigned long alg_a; 2161 CERT *c; 2162 int idx = -1; 2163 2164 alg_a = cipher->algorithm_auth; 2165 c = s->cert; 2166 2167 if ((alg_a & SSL_aDSS) && 2168 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2169 idx = SSL_PKEY_DSA_SIGN; 2170 else if (alg_a & SSL_aRSA) { 2171 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2172 idx = SSL_PKEY_RSA_SIGN; 2173 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2174 idx = SSL_PKEY_RSA_ENC; 2175 } else if ((alg_a & SSL_aECDSA) && 2176 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2177 idx = SSL_PKEY_ECC; 2178 if (idx == -1) { 2179 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2180 return (NULL); 2181 } 2182 if (pmd) 2183 *pmd = c->pkeys[idx].digest; 2184 return (c->pkeys[idx].privatekey); 2185} 2186 2187void 2188ssl_update_cache(SSL *s, int mode) 2189{ 2190 int i; 2191 2192 /* 2193 * If the session_id_length is 0, we are not supposed to cache it, 2194 * and it would be rather hard to do anyway :-) 2195 */ 2196 if (s->session->session_id_length == 0) 2197 return; 2198 2199 i = s->session_ctx->session_cache_mode; 2200 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2201 || SSL_CTX_add_session(s->session_ctx, s->session)) 2202 && (s->session_ctx->new_session_cb != NULL)) { 2203 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2204 if (!s->session_ctx->new_session_cb(s, s->session)) 2205 SSL_SESSION_free(s->session); 2206 } 2207 2208 /* auto flush every 255 connections */ 2209 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2210 ((i & mode) == mode)) { 2211 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2212 s->session_ctx->stats.sess_connect_good : 2213 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2214 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2215 } 2216 } 2217} 2218 2219const SSL_METHOD * 2220SSL_get_ssl_method(SSL *s) 2221{ 2222 return (s->method); 2223} 2224 2225int 2226SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2227{ 2228 int conn = -1; 2229 int ret = 1; 2230 2231 if (s->method != meth) { 2232 if (s->handshake_func != NULL) 2233 conn = (s->handshake_func == s->method->ssl_connect); 2234 2235 if (s->method->version == meth->version) 2236 s->method = meth; 2237 else { 2238 s->method->ssl_free(s); 2239 s->method = meth; 2240 ret = s->method->ssl_new(s); 2241 } 2242 2243 if (conn == 1) 2244 s->handshake_func = meth->ssl_connect; 2245 else if (conn == 0) 2246 s->handshake_func = meth->ssl_accept; 2247 } 2248 return (ret); 2249} 2250 2251int 2252SSL_get_error(const SSL *s, int i) 2253{ 2254 int reason; 2255 unsigned long l; 2256 BIO *bio; 2257 2258 if (i > 0) 2259 return (SSL_ERROR_NONE); 2260 2261 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2262 * etc, where we do encode the error */ 2263 if ((l = ERR_peek_error()) != 0) { 2264 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2265 return (SSL_ERROR_SYSCALL); 2266 else 2267 return (SSL_ERROR_SSL); 2268 } 2269 2270 if ((i < 0) && SSL_want_read(s)) { 2271 bio = SSL_get_rbio(s); 2272 if (BIO_should_read(bio)) { 2273 return (SSL_ERROR_WANT_READ); 2274 } else if (BIO_should_write(bio)) { 2275 /* 2276 * This one doesn't make too much sense... We never 2277 * try to write to the rbio, and an application 2278 * program where rbio and wbio are separate couldn't 2279 * even know what it should wait for. However if we 2280 * ever set s->rwstate incorrectly (so that we have 2281 * SSL_want_read(s) instead of SSL_want_write(s)) 2282 * and rbio and wbio *are* the same, this test works 2283 * around that bug; so it might be safer to keep it. 2284 */ 2285 return (SSL_ERROR_WANT_WRITE); 2286 } else if (BIO_should_io_special(bio)) { 2287 reason = BIO_get_retry_reason(bio); 2288 if (reason == BIO_RR_CONNECT) 2289 return (SSL_ERROR_WANT_CONNECT); 2290 else if (reason == BIO_RR_ACCEPT) 2291 return (SSL_ERROR_WANT_ACCEPT); 2292 else 2293 return (SSL_ERROR_SYSCALL); /* unknown */ 2294 } 2295 } 2296 2297 if ((i < 0) && SSL_want_write(s)) { 2298 bio = SSL_get_wbio(s); 2299 if (BIO_should_write(bio)) { 2300 return (SSL_ERROR_WANT_WRITE); 2301 } else if (BIO_should_read(bio)) { 2302 /* 2303 * See above (SSL_want_read(s) with 2304 * BIO_should_write(bio)) 2305 */ 2306 return (SSL_ERROR_WANT_READ); 2307 } else if (BIO_should_io_special(bio)) { 2308 reason = BIO_get_retry_reason(bio); 2309 if (reason == BIO_RR_CONNECT) 2310 return (SSL_ERROR_WANT_CONNECT); 2311 else if (reason == BIO_RR_ACCEPT) 2312 return (SSL_ERROR_WANT_ACCEPT); 2313 else 2314 return (SSL_ERROR_SYSCALL); 2315 } 2316 } 2317 if ((i < 0) && SSL_want_x509_lookup(s)) { 2318 return (SSL_ERROR_WANT_X509_LOOKUP); 2319 } 2320 2321 if (i == 0) { 2322 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2323 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2324 return (SSL_ERROR_ZERO_RETURN); 2325 } 2326 return (SSL_ERROR_SYSCALL); 2327} 2328 2329int 2330SSL_do_handshake(SSL *s) 2331{ 2332 int ret = 1; 2333 2334 if (s->handshake_func == NULL) { 2335 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2336 SSL_R_CONNECTION_TYPE_NOT_SET); 2337 return (-1); 2338 } 2339 2340 s->method->ssl_renegotiate_check(s); 2341 2342 if (SSL_in_init(s) || SSL_in_before(s)) { 2343 ret = s->handshake_func(s); 2344 } 2345 return (ret); 2346} 2347 2348/* 2349 * For the next 2 functions, SSL_clear() sets shutdown and so 2350 * one of these calls will reset it 2351 */ 2352void 2353SSL_set_accept_state(SSL *s) 2354{ 2355 s->server = 1; 2356 s->shutdown = 0; 2357 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2358 s->handshake_func = s->method->ssl_accept; 2359 /* clear the current cipher */ 2360 ssl_clear_cipher_ctx(s); 2361 ssl_clear_hash_ctx(&s->read_hash); 2362 ssl_clear_hash_ctx(&s->write_hash); 2363} 2364 2365void 2366SSL_set_connect_state(SSL *s) 2367{ 2368 s->server = 0; 2369 s->shutdown = 0; 2370 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2371 s->handshake_func = s->method->ssl_connect; 2372 /* clear the current cipher */ 2373 ssl_clear_cipher_ctx(s); 2374 ssl_clear_hash_ctx(&s->read_hash); 2375 ssl_clear_hash_ctx(&s->write_hash); 2376} 2377 2378int 2379ssl_undefined_function(SSL *s) 2380{ 2381 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2382 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2383 return (0); 2384} 2385 2386int 2387ssl_undefined_void_function(void) 2388{ 2389 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2390 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2391 return (0); 2392} 2393 2394int 2395ssl_undefined_const_function(const SSL *s) 2396{ 2397 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2398 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2399 return (0); 2400} 2401 2402SSL_METHOD * 2403ssl_bad_method(int ver) 2404{ 2405 SSLerr(SSL_F_SSL_BAD_METHOD, 2406 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2407 return (NULL); 2408} 2409 2410const char * 2411ssl_version_string(int ver) 2412{ 2413 switch (ver) { 2414 case DTLS1_BAD_VER: 2415 return (SSL_TXT_DTLS1_BAD); 2416 case DTLS1_VERSION: 2417 return (SSL_TXT_DTLS1); 2418 case SSL3_VERSION: 2419 return (SSL_TXT_SSLV3); 2420 case TLS1_VERSION: 2421 return (SSL_TXT_TLSV1); 2422 case TLS1_1_VERSION: 2423 return (SSL_TXT_TLSV1_1); 2424 case TLS1_2_VERSION: 2425 return (SSL_TXT_TLSV1_2); 2426 default: 2427 return ("unknown"); 2428 } 2429} 2430 2431const char * 2432SSL_get_version(const SSL *s) 2433{ 2434 return ssl_version_string(s->version); 2435} 2436 2437SSL * 2438SSL_dup(SSL *s) 2439{ 2440 STACK_OF(X509_NAME) *sk; 2441 X509_NAME *xn; 2442 SSL *ret; 2443 int i; 2444 2445 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2446 return (NULL); 2447 2448 ret->version = s->version; 2449 ret->type = s->type; 2450 ret->method = s->method; 2451 2452 if (s->session != NULL) { 2453 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2454 SSL_copy_session_id(ret, s); 2455 } else { 2456 /* 2457 * No session has been established yet, so we have to expect 2458 * that s->cert or ret->cert will be changed later -- 2459 * they should not both point to the same object, 2460 * and thus we can't use SSL_copy_session_id. 2461 */ 2462 2463 ret->method->ssl_free(ret); 2464 ret->method = s->method; 2465 ret->method->ssl_new(ret); 2466 2467 if (s->cert != NULL) { 2468 if (ret->cert != NULL) { 2469 ssl_cert_free(ret->cert); 2470 } 2471 ret->cert = ssl_cert_dup(s->cert); 2472 if (ret->cert == NULL) 2473 goto err; 2474 } 2475 2476 SSL_set_session_id_context(ret, 2477 s->sid_ctx, s->sid_ctx_length); 2478 } 2479 2480 ret->options = s->options; 2481 ret->mode = s->mode; 2482 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2483 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2484 ret->msg_callback = s->msg_callback; 2485 ret->msg_callback_arg = s->msg_callback_arg; 2486 SSL_set_verify(ret, SSL_get_verify_mode(s), 2487 SSL_get_verify_callback(s)); 2488 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2489 ret->generate_session_id = s->generate_session_id; 2490 2491 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2492 2493 ret->debug = s->debug; 2494 2495 /* copy app data, a little dangerous perhaps */ 2496 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2497 &ret->ex_data, &s->ex_data)) 2498 goto err; 2499 2500 /* setup rbio, and wbio */ 2501 if (s->rbio != NULL) { 2502 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2503 goto err; 2504 } 2505 if (s->wbio != NULL) { 2506 if (s->wbio != s->rbio) { 2507 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2508 goto err; 2509 } else 2510 ret->wbio = ret->rbio; 2511 } 2512 ret->rwstate = s->rwstate; 2513 ret->in_handshake = s->in_handshake; 2514 ret->handshake_func = s->handshake_func; 2515 ret->server = s->server; 2516 ret->renegotiate = s->renegotiate; 2517 ret->new_session = s->new_session; 2518 ret->quiet_shutdown = s->quiet_shutdown; 2519 ret->shutdown = s->shutdown; 2520 /* SSL_dup does not really work at any state, though */ 2521 ret->state=s->state; 2522 ret->rstate = s->rstate; 2523 2524 /* 2525 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2526 * ret->init_off 2527 */ 2528 ret->init_num = 0; 2529 2530 ret->hit = s->hit; 2531 2532 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2533 2534 /* dup the cipher_list and cipher_list_by_id stacks */ 2535 if (s->cipher_list != NULL) { 2536 if ((ret->cipher_list = 2537 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2538 goto err; 2539 } 2540 if (s->cipher_list_by_id != NULL) { 2541 if ((ret->cipher_list_by_id = 2542 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2543 goto err; 2544 } 2545 2546 /* Dup the client_CA list */ 2547 if (s->client_CA != NULL) { 2548 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2549 ret->client_CA = sk; 2550 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2551 xn = sk_X509_NAME_value(sk, i); 2552 if (sk_X509_NAME_set(sk, i, 2553 X509_NAME_dup(xn)) == NULL) { 2554 X509_NAME_free(xn); 2555 goto err; 2556 } 2557 } 2558 } 2559 2560 if (0) { 2561err: 2562 if (ret != NULL) 2563 SSL_free(ret); 2564 ret = NULL; 2565 } 2566 return (ret); 2567} 2568 2569void 2570ssl_clear_cipher_ctx(SSL *s) 2571{ 2572 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2573 s->enc_read_ctx = NULL; 2574 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2575 s->enc_write_ctx = NULL; 2576 2577 if (s->aead_read_ctx != NULL) { 2578 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2579 free(s->aead_read_ctx); 2580 s->aead_read_ctx = NULL; 2581 } 2582 if (s->aead_write_ctx != NULL) { 2583 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2584 free(s->aead_write_ctx); 2585 s->aead_write_ctx = NULL; 2586 } 2587 2588} 2589 2590/* Fix this function so that it takes an optional type parameter */ 2591X509 * 2592SSL_get_certificate(const SSL *s) 2593{ 2594 if (s->cert != NULL) 2595 return (s->cert->key->x509); 2596 else 2597 return (NULL); 2598} 2599 2600/* Fix this function so that it takes an optional type parameter */ 2601EVP_PKEY * 2602SSL_get_privatekey(SSL *s) 2603{ 2604 if (s->cert != NULL) 2605 return (s->cert->key->privatekey); 2606 else 2607 return (NULL); 2608} 2609 2610const SSL_CIPHER * 2611SSL_get_current_cipher(const SSL *s) 2612{ 2613 if ((s->session != NULL) && (s->session->cipher != NULL)) 2614 return (s->session->cipher); 2615 return (NULL); 2616} 2617const void * 2618SSL_get_current_compression(SSL *s) 2619{ 2620 return (NULL); 2621} 2622 2623const void * 2624SSL_get_current_expansion(SSL *s) 2625{ 2626 return (NULL); 2627} 2628 2629int 2630ssl_init_wbio_buffer(SSL *s, int push) 2631{ 2632 BIO *bbio; 2633 2634 if (s->bbio == NULL) { 2635 bbio = BIO_new(BIO_f_buffer()); 2636 if (bbio == NULL) 2637 return (0); 2638 s->bbio = bbio; 2639 } else { 2640 bbio = s->bbio; 2641 if (s->bbio == s->wbio) 2642 s->wbio = BIO_pop(s->wbio); 2643 } 2644 (void)BIO_reset(bbio); 2645/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2646 if (!BIO_set_read_buffer_size(bbio, 1)) { 2647 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2648 ERR_R_BUF_LIB); 2649 return (0); 2650 } 2651 if (push) { 2652 if (s->wbio != bbio) 2653 s->wbio = BIO_push(bbio, s->wbio); 2654 } else { 2655 if (s->wbio == bbio) 2656 s->wbio = BIO_pop(bbio); 2657 } 2658 return (1); 2659} 2660 2661void 2662ssl_free_wbio_buffer(SSL *s) 2663{ 2664 if (s->bbio == NULL) 2665 return; 2666 2667 if (s->bbio == s->wbio) { 2668 /* remove buffering */ 2669 s->wbio = BIO_pop(s->wbio); 2670 } 2671 BIO_free(s->bbio); 2672 s->bbio = NULL; 2673} 2674 2675void 2676SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2677{ 2678 ctx->quiet_shutdown = mode; 2679} 2680 2681int 2682SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2683{ 2684 return (ctx->quiet_shutdown); 2685} 2686 2687void 2688SSL_set_quiet_shutdown(SSL *s, int mode) 2689{ 2690 s->quiet_shutdown = mode; 2691} 2692 2693int 2694SSL_get_quiet_shutdown(const SSL *s) 2695{ 2696 return (s->quiet_shutdown); 2697} 2698 2699void 2700SSL_set_shutdown(SSL *s, int mode) 2701{ 2702 s->shutdown = mode; 2703} 2704 2705int 2706SSL_get_shutdown(const SSL *s) 2707{ 2708 return (s->shutdown); 2709} 2710 2711int 2712SSL_version(const SSL *s) 2713{ 2714 return (s->version); 2715} 2716 2717SSL_CTX * 2718SSL_get_SSL_CTX(const SSL *ssl) 2719{ 2720 return (ssl->ctx); 2721} 2722 2723SSL_CTX * 2724SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2725{ 2726 if (ssl->ctx == ctx) 2727 return (ssl->ctx); 2728 if (ctx == NULL) 2729 ctx = ssl->initial_ctx; 2730 if (ssl->cert != NULL) 2731 ssl_cert_free(ssl->cert); 2732 ssl->cert = ssl_cert_dup(ctx->cert); 2733 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2734 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2735 ssl->ctx = ctx; 2736 return (ssl->ctx); 2737} 2738 2739int 2740SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2741{ 2742 return (X509_STORE_set_default_paths(ctx->cert_store)); 2743} 2744 2745int 2746SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2747 const char *CApath) 2748{ 2749 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2750} 2751 2752void 2753SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2754{ 2755 ssl->info_callback = cb; 2756} 2757 2758void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2759{ 2760 return (ssl->info_callback); 2761} 2762 2763int 2764SSL_state(const SSL *ssl) 2765{ 2766 return (ssl->state); 2767} 2768 2769void 2770SSL_set_state(SSL *ssl, int state) 2771{ 2772 ssl->state = state; 2773} 2774 2775void 2776SSL_set_verify_result(SSL *ssl, long arg) 2777{ 2778 ssl->verify_result = arg; 2779} 2780 2781long 2782SSL_get_verify_result(const SSL *ssl) 2783{ 2784 return (ssl->verify_result); 2785} 2786 2787int 2788SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2789 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2790{ 2791 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2792 new_func, dup_func, free_func)); 2793} 2794 2795int 2796SSL_set_ex_data(SSL *s, int idx, void *arg) 2797{ 2798 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2799} 2800 2801void * 2802SSL_get_ex_data(const SSL *s, int idx) 2803{ 2804 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2805} 2806 2807int 2808SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2809 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2810{ 2811 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2812 new_func, dup_func, free_func)); 2813} 2814 2815int 2816SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2817{ 2818 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2819} 2820 2821void * 2822SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2823{ 2824 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2825} 2826 2827int 2828ssl_ok(SSL *s) 2829{ 2830 return (1); 2831} 2832 2833X509_STORE * 2834SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2835{ 2836 return (ctx->cert_store); 2837} 2838 2839void 2840SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2841{ 2842 if (ctx->cert_store != NULL) 2843 X509_STORE_free(ctx->cert_store); 2844 ctx->cert_store = store; 2845} 2846 2847int 2848SSL_want(const SSL *s) 2849{ 2850 return (s->rwstate); 2851} 2852 2853void 2854SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2855 int keylength)) 2856{ 2857 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2858} 2859 2860void 2861SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2862 int keylength)) 2863{ 2864 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2865} 2866 2867void 2868SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2869 int keylength)) 2870{ 2871 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2872} 2873 2874void 2875SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2876 int keylength)) 2877{ 2878 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2879} 2880 2881void 2882SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2883 int is_export, int keylength)) 2884{ 2885 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2886 (void (*)(void))ecdh); 2887} 2888 2889void 2890SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2891 int keylength)) 2892{ 2893 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2894} 2895 2896 2897void 2898SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2899 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2900{ 2901 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2902 (void (*)(void))cb); 2903} 2904 2905void 2906SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2907 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2908{ 2909 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2910} 2911 2912/* 2913 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 2914 * variable, freeing EVP_MD_CTX previously stored in that variable, if 2915 * any. If EVP_MD pointer is passed, initializes ctx with this md 2916 * Returns newly allocated ctx; 2917 */ 2918EVP_MD_CTX * 2919ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 2920{ 2921 ssl_clear_hash_ctx(hash); 2922 *hash = EVP_MD_CTX_create(); 2923 if (*hash != NULL && md != NULL) 2924 EVP_DigestInit_ex(*hash, md, NULL); 2925 return (*hash); 2926} 2927 2928void 2929ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2930{ 2931 if (*hash) 2932 EVP_MD_CTX_destroy(*hash); 2933 *hash = NULL; 2934} 2935 2936void 2937SSL_set_debug(SSL *s, int debug) 2938{ 2939 s->debug = debug; 2940} 2941 2942int 2943SSL_cache_hit(SSL *s) 2944{ 2945 return (s->hit); 2946} 2947 2948IMPLEMENT_STACK_OF(SSL_CIPHER) 2949IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2950