ssl_lib.c revision 1.102
1/* $OpenBSD: ssl_lib.c,v 1.102 2015/03/27 12:26:41 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> 144 145#include "ssl_locl.h" 146 147#include <openssl/bn.h> 148#include <openssl/dh.h> 149#include <openssl/lhash.h> 150#include <openssl/objects.h> 151#include <openssl/ocsp.h> 152#include <openssl/x509v3.h> 153 154#ifndef OPENSSL_NO_ENGINE 155#include <openssl/engine.h> 156#endif 157 158const char *SSL_version_str = OPENSSL_VERSION_TEXT; 159 160SSL3_ENC_METHOD ssl3_undef_enc_method = { 161 /* 162 * Evil casts, but these functions are only called if there's a 163 * library bug. 164 */ 165 .enc = (int (*)(SSL *, int))ssl_undefined_function, 166 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 167 .setup_key_block = ssl_undefined_function, 168 .generate_master_secret = (int (*)(SSL *, unsigned char *, 169 unsigned char *, int))ssl_undefined_function, 170 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 171 .final_finish_mac = (int (*)(SSL *, const char*, int, 172 unsigned char *))ssl_undefined_function, 173 .finish_mac_length = 0, 174 .cert_verify_mac = (int (*)(SSL *, int, 175 unsigned char *))ssl_undefined_function, 176 .client_finished_label = NULL, 177 .client_finished_label_len = 0, 178 .server_finished_label = NULL, 179 .server_finished_label_len = 0, 180 .alert_value = (int (*)(int))ssl_undefined_function, 181 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 182 const char *, size_t, const unsigned char *, size_t, 183 int use_context))ssl_undefined_function, 184 .enc_flags = 0, 185}; 186 187int 188SSL_clear(SSL *s) 189{ 190 if (s->method == NULL) { 191 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 192 return (0); 193 } 194 195 if (ssl_clear_bad_session(s)) { 196 SSL_SESSION_free(s->session); 197 s->session = NULL; 198 } 199 200 s->error = 0; 201 s->hit = 0; 202 s->shutdown = 0; 203 204 if (s->renegotiate) { 205 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 206 return (0); 207 } 208 209 s->type = 0; 210 211 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 212 213 s->version = s->method->version; 214 s->client_version = s->version; 215 s->rwstate = SSL_NOTHING; 216 s->rstate = SSL_ST_READ_HEADER; 217 218 BUF_MEM_free(s->init_buf); 219 s->init_buf = NULL; 220 221 ssl_clear_cipher_ctx(s); 222 ssl_clear_hash_ctx(&s->read_hash); 223 ssl_clear_hash_ctx(&s->write_hash); 224 225 s->first_packet = 0; 226 227 /* 228 * Check to see if we were changed into a different method, if 229 * so, revert back if we are not doing session-id reuse. 230 */ 231 if (!s->in_handshake && (s->session == NULL) && 232 (s->method != s->ctx->method)) { 233 s->method->ssl_free(s); 234 s->method = s->ctx->method; 235 if (!s->method->ssl_new(s)) 236 return (0); 237 } else 238 s->method->ssl_clear(s); 239 240 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 s->next_proto_negotiated = NULL; 335 336 if (s->ctx->alpn_client_proto_list != NULL) { 337 s->alpn_client_proto_list = 338 malloc(s->ctx->alpn_client_proto_list_len); 339 if (s->alpn_client_proto_list == NULL) 340 goto err; 341 memcpy(s->alpn_client_proto_list, 342 s->ctx->alpn_client_proto_list, 343 s->ctx->alpn_client_proto_list_len); 344 s->alpn_client_proto_list_len = 345 s->ctx->alpn_client_proto_list_len; 346 } 347 348 s->verify_result = X509_V_OK; 349 350 s->method = ctx->method; 351 352 if (!s->method->ssl_new(s)) 353 goto err; 354 355 s->references = 1; 356 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 357 358 SSL_clear(s); 359 360 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 361 362 363 return (s); 364err: 365 if (s != NULL) { 366 if (s->cert != NULL) 367 ssl_cert_free(s->cert); 368 SSL_CTX_free(s->ctx); /* decrement reference count */ 369 free(s); 370 } 371 SSLerr(SSL_F_SSL_NEW, 372 ERR_R_MALLOC_FAILURE); 373 return (NULL); 374} 375 376int 377SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 378 unsigned int sid_ctx_len) 379{ 380 if (sid_ctx_len > sizeof ctx->sid_ctx) { 381 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 382 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 383 return (0); 384 } 385 ctx->sid_ctx_length = sid_ctx_len; 386 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 387 388 return (1); 389} 390 391int 392SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 393 unsigned int sid_ctx_len) 394{ 395 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 396 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 397 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 398 return (0); 399 } 400 ssl->sid_ctx_length = sid_ctx_len; 401 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 402 403 return (1); 404} 405 406int 407SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 408{ 409 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 410 ctx->generate_session_id = cb; 411 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 412 return (1); 413} 414 415int 416SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 417{ 418 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 419 ssl->generate_session_id = cb; 420 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 421 return (1); 422} 423 424int 425SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 426 unsigned int id_len) 427{ 428 /* 429 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 430 * shows how we can "construct" a session to give us the desired 431 * check - ie. to find if there's a session in the hash table 432 * that would conflict with any new session built out of this 433 * id/id_len and the ssl_version in use by this SSL. 434 */ 435 SSL_SESSION r, *p; 436 437 if (id_len > sizeof r.session_id) 438 return (0); 439 440 r.ssl_version = ssl->version; 441 r.session_id_length = id_len; 442 memcpy(r.session_id, id, id_len); 443 444 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 445 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 446 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 447 return (p != NULL); 448} 449 450int 451SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 452{ 453 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 454} 455 456int 457SSL_set_purpose(SSL *s, int purpose) 458{ 459 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 460} 461 462int 463SSL_CTX_set_trust(SSL_CTX *s, int trust) 464{ 465 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 466} 467 468int 469SSL_set_trust(SSL *s, int trust) 470{ 471 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 472} 473 474int 475SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 476{ 477 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 478} 479 480int 481SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482{ 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484} 485 486void 487SSL_free(SSL *s) 488{ 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 if (s->param) 499 X509_VERIFY_PARAM_free(s->param); 500 501 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 502 503 if (s->bbio != NULL) { 504 /* If the buffering BIO is in place, pop it off */ 505 if (s->bbio == s->wbio) { 506 s->wbio = BIO_pop(s->wbio); 507 } 508 BIO_free(s->bbio); 509 s->bbio = NULL; 510 } 511 if (s->rbio != NULL) 512 BIO_free_all(s->rbio); 513 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 514 BIO_free_all(s->wbio); 515 516 if (s->init_buf != NULL) 517 BUF_MEM_free(s->init_buf); 518 519 /* add extra stuff */ 520 if (s->cipher_list != NULL) 521 sk_SSL_CIPHER_free(s->cipher_list); 522 if (s->cipher_list_by_id != NULL) 523 sk_SSL_CIPHER_free(s->cipher_list_by_id); 524 525 /* Make the next call work :-) */ 526 if (s->session != NULL) { 527 ssl_clear_bad_session(s); 528 SSL_SESSION_free(s->session); 529 } 530 531 ssl_clear_cipher_ctx(s); 532 ssl_clear_hash_ctx(&s->read_hash); 533 ssl_clear_hash_ctx(&s->write_hash); 534 535 if (s->cert != NULL) 536 ssl_cert_free(s->cert); 537 /* Free up if allocated */ 538 539 free(s->tlsext_hostname); 540 SSL_CTX_free(s->initial_ctx); 541 free(s->tlsext_ecpointformatlist); 542 free(s->tlsext_ellipticcurvelist); 543 if (s->tlsext_ocsp_exts) 544 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 545 X509_EXTENSION_free); 546 if (s->tlsext_ocsp_ids) 547 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 548 free(s->tlsext_ocsp_resp); 549 550 if (s->client_CA != NULL) 551 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 552 553 if (s->method != NULL) 554 s->method->ssl_free(s); 555 556 SSL_CTX_free(s->ctx); 557 558 559 free(s->next_proto_negotiated); 560 free(s->alpn_client_proto_list); 561 562#ifndef OPENSSL_NO_SRTP 563 if (s->srtp_profiles) 564 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 565#endif 566 567 free(s); 568} 569 570void 571SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 572{ 573 /* If the output buffering BIO is still in place, remove it */ 574 if (s->bbio != NULL) { 575 if (s->wbio == s->bbio) { 576 s->wbio = s->wbio->next_bio; 577 s->bbio->next_bio = NULL; 578 } 579 } 580 if ((s->rbio != NULL) && (s->rbio != rbio)) 581 BIO_free_all(s->rbio); 582 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 583 BIO_free_all(s->wbio); 584 s->rbio = rbio; 585 s->wbio = wbio; 586} 587 588BIO * 589SSL_get_rbio(const SSL *s) 590{ 591 return (s->rbio); 592} 593 594BIO * 595SSL_get_wbio(const SSL *s) 596{ 597 return (s->wbio); 598} 599 600int 601SSL_get_fd(const SSL *s) 602{ 603 return (SSL_get_rfd(s)); 604} 605 606int 607SSL_get_rfd(const SSL *s) 608{ 609 int ret = -1; 610 BIO *b, *r; 611 612 b = SSL_get_rbio(s); 613 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 614 if (r != NULL) 615 BIO_get_fd(r, &ret); 616 return (ret); 617} 618 619int 620SSL_get_wfd(const SSL *s) 621{ 622 int ret = -1; 623 BIO *b, *r; 624 625 b = SSL_get_wbio(s); 626 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 627 if (r != NULL) 628 BIO_get_fd(r, &ret); 629 return (ret); 630} 631 632int 633SSL_set_fd(SSL *s, int fd) 634{ 635 int ret = 0; 636 BIO *bio = NULL; 637 638 bio = BIO_new(BIO_s_socket()); 639 640 if (bio == NULL) { 641 SSLerr(SSL_F_SSL_SET_FD, 642 ERR_R_BUF_LIB); 643 goto err; 644 } 645 BIO_set_fd(bio, fd, BIO_NOCLOSE); 646 SSL_set_bio(s, bio, bio); 647 ret = 1; 648err: 649 return (ret); 650} 651 652int 653SSL_set_wfd(SSL *s, int fd) 654{ 655 int ret = 0; 656 BIO *bio = NULL; 657 658 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 659 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 660 bio = BIO_new(BIO_s_socket()); 661 662 if (bio == NULL) { 663 SSLerr(SSL_F_SSL_SET_WFD, 664 ERR_R_BUF_LIB); 665 goto err; 666 } 667 BIO_set_fd(bio, fd, BIO_NOCLOSE); 668 SSL_set_bio(s, SSL_get_rbio(s), bio); 669 } else 670 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 671 ret = 1; 672err: 673 return (ret); 674} 675 676int 677SSL_set_rfd(SSL *s, int fd) 678{ 679 int ret = 0; 680 BIO *bio = NULL; 681 682 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 683 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 684 bio = BIO_new(BIO_s_socket()); 685 686 if (bio == NULL) { 687 SSLerr(SSL_F_SSL_SET_RFD, 688 ERR_R_BUF_LIB); 689 goto err; 690 } 691 BIO_set_fd(bio, fd, BIO_NOCLOSE); 692 SSL_set_bio(s, bio, SSL_get_wbio(s)); 693 } else 694 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 695 ret = 1; 696err: 697 return (ret); 698} 699 700 701/* return length of latest Finished message we sent, copy to 'buf' */ 702size_t 703SSL_get_finished(const SSL *s, void *buf, size_t count) 704{ 705 size_t ret = 0; 706 707 if (s->s3 != NULL) { 708 ret = s->s3->tmp.finish_md_len; 709 if (count > ret) 710 count = ret; 711 memcpy(buf, s->s3->tmp.finish_md, count); 712 } 713 return (ret); 714} 715 716/* return length of latest Finished message we expected, copy to 'buf' */ 717size_t 718SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 719{ 720 size_t ret = 0; 721 722 if (s->s3 != NULL) { 723 ret = s->s3->tmp.peer_finish_md_len; 724 if (count > ret) 725 count = ret; 726 memcpy(buf, s->s3->tmp.peer_finish_md, count); 727 } 728 return (ret); 729} 730 731 732int 733SSL_get_verify_mode(const SSL *s) 734{ 735 return (s->verify_mode); 736} 737 738int 739SSL_get_verify_depth(const SSL *s) 740{ 741 return (X509_VERIFY_PARAM_get_depth(s->param)); 742} 743 744int 745(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 746{ 747 return (s->verify_callback); 748} 749 750int 751SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 752{ 753 return (ctx->verify_mode); 754} 755 756int 757SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 758{ 759 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 760} 761 762int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 763{ 764 return (ctx->default_verify_callback); 765} 766 767void 768SSL_set_verify(SSL *s, int mode, 769 int (*callback)(int ok, X509_STORE_CTX *ctx)) 770{ 771 s->verify_mode = mode; 772 if (callback != NULL) 773 s->verify_callback = callback; 774} 775 776void 777SSL_set_verify_depth(SSL *s, int depth) 778{ 779 X509_VERIFY_PARAM_set_depth(s->param, depth); 780} 781 782void 783SSL_set_read_ahead(SSL *s, int yes) 784{ 785 s->read_ahead = yes; 786} 787 788int 789SSL_get_read_ahead(const SSL *s) 790{ 791 return (s->read_ahead); 792} 793 794int 795SSL_pending(const SSL *s) 796{ 797 /* 798 * SSL_pending cannot work properly if read-ahead is enabled 799 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 800 * and it is impossible to fix since SSL_pending cannot report 801 * errors that may be observed while scanning the new data. 802 * (Note that SSL_pending() is often used as a boolean value, 803 * so we'd better not return -1.) 804 */ 805 return (s->method->ssl_pending(s)); 806} 807 808X509 * 809SSL_get_peer_certificate(const SSL *s) 810{ 811 X509 *r; 812 813 if ((s == NULL) || (s->session == NULL)) 814 r = NULL; 815 else 816 r = s->session->peer; 817 818 if (r == NULL) 819 return (r); 820 821 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 822 823 return (r); 824} 825 826STACK_OF(X509) * 827SSL_get_peer_cert_chain(const SSL *s) 828{ 829 STACK_OF(X509) *r; 830 831 if ((s == NULL) || (s->session == NULL) || 832 (s->session->sess_cert == NULL)) 833 r = NULL; 834 else 835 r = s->session->sess_cert->cert_chain; 836 837 /* 838 * If we are a client, cert_chain includes the peer's own 839 * certificate; 840 * if we are a server, it does not. 841 */ 842 return (r); 843} 844 845/* 846 * Now in theory, since the calling process own 't' it should be safe to 847 * modify. We need to be able to read f without being hassled 848 */ 849void 850SSL_copy_session_id(SSL *t, const SSL *f) 851{ 852 CERT *tmp; 853 854 /* Do we need to to SSL locking? */ 855 SSL_set_session(t, SSL_get_session(f)); 856 857 /* 858 * What if we are setup as SSLv2 but want to talk SSLv3 or 859 * vice-versa. 860 */ 861 if (t->method != f->method) { 862 t->method->ssl_free(t); /* cleanup current */ 863 t->method=f->method; /* change method */ 864 t->method->ssl_new(t); /* setup new */ 865 } 866 867 tmp = t->cert; 868 if (f->cert != NULL) { 869 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 870 t->cert = f->cert; 871 } else 872 t->cert = NULL; 873 if (tmp != NULL) 874 ssl_cert_free(tmp); 875 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 876} 877 878/* Fix this so it checks all the valid key/cert options */ 879int 880SSL_CTX_check_private_key(const SSL_CTX *ctx) 881{ 882 if ((ctx == NULL) || (ctx->cert == NULL) || 883 (ctx->cert->key->x509 == NULL)) { 884 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 885 SSL_R_NO_CERTIFICATE_ASSIGNED); 886 return (0); 887 } 888 if (ctx->cert->key->privatekey == NULL) { 889 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 890 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 891 return (0); 892 } 893 return (X509_check_private_key(ctx->cert->key->x509, 894 ctx->cert->key->privatekey)); 895} 896 897/* Fix this function so that it takes an optional type parameter */ 898int 899SSL_check_private_key(const SSL *ssl) 900{ 901 if (ssl == NULL) { 902 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 903 ERR_R_PASSED_NULL_PARAMETER); 904 return (0); 905 } 906 if (ssl->cert == NULL) { 907 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 908 SSL_R_NO_CERTIFICATE_ASSIGNED); 909 return (0); 910 } 911 if (ssl->cert->key->x509 == NULL) { 912 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 913 SSL_R_NO_CERTIFICATE_ASSIGNED); 914 return (0); 915 } 916 if (ssl->cert->key->privatekey == NULL) { 917 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 918 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 919 return (0); 920 } 921 return (X509_check_private_key(ssl->cert->key->x509, 922 ssl->cert->key->privatekey)); 923} 924 925int 926SSL_accept(SSL *s) 927{ 928 if (s->handshake_func == 0) 929 SSL_set_accept_state(s); /* Not properly initialized yet */ 930 931 return (s->method->ssl_accept(s)); 932} 933 934int 935SSL_connect(SSL *s) 936{ 937 if (s->handshake_func == 0) 938 SSL_set_connect_state(s); /* Not properly initialized yet */ 939 940 return (s->method->ssl_connect(s)); 941} 942 943long 944SSL_get_default_timeout(const SSL *s) 945{ 946 return (s->method->get_timeout()); 947} 948 949int 950SSL_read(SSL *s, void *buf, int num) 951{ 952 if (s->handshake_func == 0) { 953 SSLerr(SSL_F_SSL_READ, 954 SSL_R_UNINITIALIZED); 955 return (-1); 956 } 957 958 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 959 s->rwstate = SSL_NOTHING; 960 return (0); 961 } 962 return (s->method->ssl_read(s, buf, num)); 963} 964 965int 966SSL_peek(SSL *s, void *buf, int num) 967{ 968 if (s->handshake_func == 0) { 969 SSLerr(SSL_F_SSL_PEEK, 970 SSL_R_UNINITIALIZED); 971 return (-1); 972 } 973 974 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 975 return (0); 976 } 977 return (s->method->ssl_peek(s, buf, num)); 978} 979 980int 981SSL_write(SSL *s, const void *buf, int num) 982{ 983 if (s->handshake_func == 0) { 984 SSLerr(SSL_F_SSL_WRITE, 985 SSL_R_UNINITIALIZED); 986 return (-1); 987 } 988 989 if (s->shutdown & SSL_SENT_SHUTDOWN) { 990 s->rwstate = SSL_NOTHING; 991 SSLerr(SSL_F_SSL_WRITE, 992 SSL_R_PROTOCOL_IS_SHUTDOWN); 993 return (-1); 994 } 995 return (s->method->ssl_write(s, buf, num)); 996} 997 998int 999SSL_shutdown(SSL *s) 1000{ 1001 /* 1002 * Note that this function behaves differently from what one might 1003 * expect. Return values are 0 for no success (yet), 1004 * 1 for success; but calling it once is usually not enough, 1005 * even if blocking I/O is used (see ssl3_shutdown). 1006 */ 1007 1008 if (s->handshake_func == 0) { 1009 SSLerr(SSL_F_SSL_SHUTDOWN, 1010 SSL_R_UNINITIALIZED); 1011 return (-1); 1012 } 1013 1014 if ((s != NULL) && !SSL_in_init(s)) 1015 return (s->method->ssl_shutdown(s)); 1016 else 1017 return (1); 1018} 1019 1020int 1021SSL_renegotiate(SSL *s) 1022{ 1023 if (s->renegotiate == 0) 1024 s->renegotiate = 1; 1025 1026 s->new_session = 1; 1027 1028 return (s->method->ssl_renegotiate(s)); 1029} 1030 1031int 1032SSL_renegotiate_abbreviated(SSL *s) 1033{ 1034 if (s->renegotiate == 0) 1035 s->renegotiate = 1; 1036 1037 s->new_session = 0; 1038 1039 return (s->method->ssl_renegotiate(s)); 1040} 1041 1042int 1043SSL_renegotiate_pending(SSL *s) 1044{ 1045 /* 1046 * Becomes true when negotiation is requested; 1047 * false again once a handshake has finished. 1048 */ 1049 return (s->renegotiate != 0); 1050} 1051 1052long 1053SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1054{ 1055 long l; 1056 1057 switch (cmd) { 1058 case SSL_CTRL_GET_READ_AHEAD: 1059 return (s->read_ahead); 1060 case SSL_CTRL_SET_READ_AHEAD: 1061 l = s->read_ahead; 1062 s->read_ahead = larg; 1063 return (l); 1064 1065 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1066 s->msg_callback_arg = parg; 1067 return (1); 1068 1069 case SSL_CTRL_OPTIONS: 1070 return (s->options|=larg); 1071 case SSL_CTRL_CLEAR_OPTIONS: 1072 return (s->options&=~larg); 1073 case SSL_CTRL_MODE: 1074 return (s->mode|=larg); 1075 case SSL_CTRL_CLEAR_MODE: 1076 return (s->mode &=~larg); 1077 case SSL_CTRL_GET_MAX_CERT_LIST: 1078 return (s->max_cert_list); 1079 case SSL_CTRL_SET_MAX_CERT_LIST: 1080 l = s->max_cert_list; 1081 s->max_cert_list = larg; 1082 return (l); 1083 case SSL_CTRL_SET_MTU: 1084#ifndef OPENSSL_NO_DTLS1 1085 if (larg < (long)dtls1_min_mtu()) 1086 return (0); 1087#endif 1088 if (SSL_IS_DTLS(s)) { 1089 s->d1->mtu = larg; 1090 return (larg); 1091 } 1092 return (0); 1093 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1094 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1095 return (0); 1096 s->max_send_fragment = larg; 1097 return (1); 1098 case SSL_CTRL_GET_RI_SUPPORT: 1099 if (s->s3) 1100 return (s->s3->send_connection_binding); 1101 else return (0); 1102 default: 1103 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1104 } 1105} 1106 1107long 1108SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1109{ 1110 switch (cmd) { 1111 case SSL_CTRL_SET_MSG_CALLBACK: 1112 s->msg_callback = (void (*)(int write_p, int version, 1113 int content_type, const void *buf, size_t len, 1114 SSL *ssl, void *arg))(fp); 1115 return (1); 1116 1117 default: 1118 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1119 } 1120} 1121 1122LHASH_OF(SSL_SESSION) * 1123SSL_CTX_sessions(SSL_CTX *ctx) 1124{ 1125 return (ctx->sessions); 1126} 1127 1128long 1129SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1130{ 1131 long l; 1132 1133 switch (cmd) { 1134 case SSL_CTRL_GET_READ_AHEAD: 1135 return (ctx->read_ahead); 1136 case SSL_CTRL_SET_READ_AHEAD: 1137 l = ctx->read_ahead; 1138 ctx->read_ahead = larg; 1139 return (l); 1140 1141 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1142 ctx->msg_callback_arg = parg; 1143 return (1); 1144 1145 case SSL_CTRL_GET_MAX_CERT_LIST: 1146 return (ctx->max_cert_list); 1147 case SSL_CTRL_SET_MAX_CERT_LIST: 1148 l = ctx->max_cert_list; 1149 ctx->max_cert_list = larg; 1150 return (l); 1151 1152 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1153 l = ctx->session_cache_size; 1154 ctx->session_cache_size = larg; 1155 return (l); 1156 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1157 return (ctx->session_cache_size); 1158 case SSL_CTRL_SET_SESS_CACHE_MODE: 1159 l = ctx->session_cache_mode; 1160 ctx->session_cache_mode = larg; 1161 return (l); 1162 case SSL_CTRL_GET_SESS_CACHE_MODE: 1163 return (ctx->session_cache_mode); 1164 1165 case SSL_CTRL_SESS_NUMBER: 1166 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1167 case SSL_CTRL_SESS_CONNECT: 1168 return (ctx->stats.sess_connect); 1169 case SSL_CTRL_SESS_CONNECT_GOOD: 1170 return (ctx->stats.sess_connect_good); 1171 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1172 return (ctx->stats.sess_connect_renegotiate); 1173 case SSL_CTRL_SESS_ACCEPT: 1174 return (ctx->stats.sess_accept); 1175 case SSL_CTRL_SESS_ACCEPT_GOOD: 1176 return (ctx->stats.sess_accept_good); 1177 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1178 return (ctx->stats.sess_accept_renegotiate); 1179 case SSL_CTRL_SESS_HIT: 1180 return (ctx->stats.sess_hit); 1181 case SSL_CTRL_SESS_CB_HIT: 1182 return (ctx->stats.sess_cb_hit); 1183 case SSL_CTRL_SESS_MISSES: 1184 return (ctx->stats.sess_miss); 1185 case SSL_CTRL_SESS_TIMEOUTS: 1186 return (ctx->stats.sess_timeout); 1187 case SSL_CTRL_SESS_CACHE_FULL: 1188 return (ctx->stats.sess_cache_full); 1189 case SSL_CTRL_OPTIONS: 1190 return (ctx->options|=larg); 1191 case SSL_CTRL_CLEAR_OPTIONS: 1192 return (ctx->options&=~larg); 1193 case SSL_CTRL_MODE: 1194 return (ctx->mode|=larg); 1195 case SSL_CTRL_CLEAR_MODE: 1196 return (ctx->mode&=~larg); 1197 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1198 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1199 return (0); 1200 ctx->max_send_fragment = larg; 1201 return (1); 1202 default: 1203 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1204 } 1205} 1206 1207long 1208SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1209{ 1210 switch (cmd) { 1211 case SSL_CTRL_SET_MSG_CALLBACK: 1212 ctx->msg_callback = (void (*)(int write_p, int version, 1213 int content_type, const void *buf, size_t len, SSL *ssl, 1214 void *arg))(fp); 1215 return (1); 1216 1217 default: 1218 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1219 } 1220} 1221 1222int 1223ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1224{ 1225 long l; 1226 1227 l = a->id - b->id; 1228 if (l == 0L) 1229 return (0); 1230 else 1231 return ((l > 0) ? 1:-1); 1232} 1233 1234int 1235ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1236 const SSL_CIPHER * const *bp) 1237{ 1238 long l; 1239 1240 l = (*ap)->id - (*bp)->id; 1241 if (l == 0L) 1242 return (0); 1243 else 1244 return ((l > 0) ? 1:-1); 1245} 1246 1247/* 1248 * Return a STACK of the ciphers available for the SSL and in order of 1249 * preference. 1250 */ 1251STACK_OF(SSL_CIPHER) * 1252SSL_get_ciphers(const SSL *s) 1253{ 1254 if (s != NULL) { 1255 if (s->cipher_list != NULL) { 1256 return (s->cipher_list); 1257 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1258 return (s->ctx->cipher_list); 1259 } 1260 } 1261 return (NULL); 1262} 1263 1264/* 1265 * Return a STACK of the ciphers available for the SSL and in order of 1266 * algorithm id. 1267 */ 1268STACK_OF(SSL_CIPHER) * 1269ssl_get_ciphers_by_id(SSL *s) 1270{ 1271 if (s != NULL) { 1272 if (s->cipher_list_by_id != NULL) { 1273 return (s->cipher_list_by_id); 1274 } else if ((s->ctx != NULL) && 1275 (s->ctx->cipher_list_by_id != NULL)) { 1276 return (s->ctx->cipher_list_by_id); 1277 } 1278 } 1279 return (NULL); 1280} 1281 1282/* The old interface to get the same thing as SSL_get_ciphers(). */ 1283const char * 1284SSL_get_cipher_list(const SSL *s, int n) 1285{ 1286 SSL_CIPHER *c; 1287 STACK_OF(SSL_CIPHER) *sk; 1288 1289 if (s == NULL) 1290 return (NULL); 1291 sk = SSL_get_ciphers(s); 1292 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1293 return (NULL); 1294 c = sk_SSL_CIPHER_value(sk, n); 1295 if (c == NULL) 1296 return (NULL); 1297 return (c->name); 1298} 1299 1300/* Specify the ciphers to be used by default by the SSL_CTX. */ 1301int 1302SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1303{ 1304 STACK_OF(SSL_CIPHER) *sk; 1305 1306 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1307 &ctx->cipher_list_by_id, str); 1308 /* 1309 * ssl_create_cipher_list may return an empty stack if it 1310 * was unable to find a cipher matching the given rule string 1311 * (for example if the rule string specifies a cipher which 1312 * has been disabled). This is not an error as far as 1313 * ssl_create_cipher_list is concerned, and hence 1314 * ctx->cipher_list and ctx->cipher_list_by_id has been 1315 * updated. 1316 */ 1317 if (sk == NULL) 1318 return (0); 1319 else if (sk_SSL_CIPHER_num(sk) == 0) { 1320 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1321 SSL_R_NO_CIPHER_MATCH); 1322 return (0); 1323 } 1324 return (1); 1325} 1326 1327/* Specify the ciphers to be used by the SSL. */ 1328int 1329SSL_set_cipher_list(SSL *s, const char *str) 1330{ 1331 STACK_OF(SSL_CIPHER) *sk; 1332 1333 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1334 &s->cipher_list_by_id, str); 1335 /* see comment in SSL_CTX_set_cipher_list */ 1336 if (sk == NULL) 1337 return (0); 1338 else if (sk_SSL_CIPHER_num(sk) == 0) { 1339 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1340 SSL_R_NO_CIPHER_MATCH); 1341 return (0); 1342 } 1343 return (1); 1344} 1345 1346/* works well for SSLv2, not so good for SSLv3 */ 1347char * 1348SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1349{ 1350 char *end; 1351 STACK_OF(SSL_CIPHER) *sk; 1352 SSL_CIPHER *c; 1353 size_t curlen = 0; 1354 int i; 1355 1356 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1357 return (NULL); 1358 1359 sk = s->session->ciphers; 1360 if (sk_SSL_CIPHER_num(sk) == 0) 1361 return (NULL); 1362 1363 buf[0] = '\0'; 1364 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1365 c = sk_SSL_CIPHER_value(sk, i); 1366 end = buf + curlen; 1367 if (strlcat(buf, c->name, len) >= len || 1368 (curlen = strlcat(buf, ":", len)) >= len) { 1369 /* remove truncated cipher from list */ 1370 *end = '\0'; 1371 break; 1372 } 1373 } 1374 /* remove trailing colon */ 1375 if ((end = strrchr(buf, ':')) != NULL) 1376 *end = '\0'; 1377 return (buf); 1378} 1379 1380int 1381ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1382{ 1383 int i; 1384 SSL_CIPHER *c; 1385 unsigned char *q; 1386 1387 if (sk == NULL) 1388 return (0); 1389 q = p; 1390 1391 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1392 c = sk_SSL_CIPHER_value(sk, i); 1393 1394 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1395 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1396 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1397 continue; 1398 1399 s2n(ssl3_cipher_get_value(c), p); 1400 } 1401 1402 /* 1403 * If p == q, no ciphers and caller indicates an error. Otherwise 1404 * add SCSV if not renegotiating. 1405 */ 1406 if (p != q && !s->renegotiate) 1407 s2n(SSL3_CK_SCSV & SSL3_CK_VALUE_MASK, p); 1408 1409 return (p - q); 1410} 1411 1412STACK_OF(SSL_CIPHER) * 1413ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1414 STACK_OF(SSL_CIPHER) **skp) 1415{ 1416 const SSL_CIPHER *c; 1417 STACK_OF(SSL_CIPHER) *sk; 1418 int i; 1419 unsigned long cipher_id; 1420 uint16_t cipher_value; 1421 uint16_t max_version; 1422 1423 if (s->s3) 1424 s->s3->send_connection_binding = 0; 1425 1426 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1427 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1428 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1429 return (NULL); 1430 } 1431 if (skp == NULL || *skp == NULL) { 1432 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1433 if (sk == NULL) 1434 goto err; 1435 } else { 1436 sk = *skp; 1437 sk_SSL_CIPHER_zero(sk); 1438 } 1439 1440 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1441 n2s(p, cipher_value); 1442 cipher_id = SSL3_CK_ID | cipher_value; 1443 1444 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1445 /* 1446 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1447 * renegotiating. 1448 */ 1449 if (s->renegotiate) { 1450 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1451 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1452 ssl3_send_alert(s, SSL3_AL_FATAL, 1453 SSL_AD_HANDSHAKE_FAILURE); 1454 1455 goto err; 1456 } 1457 s->s3->send_connection_binding = 1; 1458 continue; 1459 } 1460 1461 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1462 /* 1463 * TLS_FALLBACK_SCSV indicates that the client 1464 * previously tried a higher protocol version. 1465 * Fail if the current version is an unexpected 1466 * downgrade. 1467 */ 1468 max_version = ssl_max_server_version(s); 1469 if (max_version == 0 || s->version < max_version) { 1470 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1471 SSL_R_INAPPROPRIATE_FALLBACK); 1472 if (s->s3 != NULL) 1473 ssl3_send_alert(s, SSL3_AL_FATAL, 1474 SSL_AD_INAPPROPRIATE_FALLBACK); 1475 goto err; 1476 } 1477 continue; 1478 } 1479 1480 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1481 if (!sk_SSL_CIPHER_push(sk, c)) { 1482 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1483 ERR_R_MALLOC_FAILURE); 1484 goto err; 1485 } 1486 } 1487 } 1488 1489 if (skp != NULL) 1490 *skp = sk; 1491 return (sk); 1492 1493err: 1494 if (skp == NULL || *skp == NULL) 1495 sk_SSL_CIPHER_free(sk); 1496 return (NULL); 1497} 1498 1499 1500/* 1501 * Return a servername extension value if provided in Client Hello, or NULL. 1502 * So far, only host_name types are defined (RFC 3546). 1503 */ 1504const char * 1505SSL_get_servername(const SSL *s, const int type) 1506{ 1507 if (type != TLSEXT_NAMETYPE_host_name) 1508 return (NULL); 1509 1510 return (s->session && !s->tlsext_hostname ? 1511 s->session->tlsext_hostname : 1512 s->tlsext_hostname); 1513} 1514 1515int 1516SSL_get_servername_type(const SSL *s) 1517{ 1518 if (s->session && 1519 (!s->tlsext_hostname ? 1520 s->session->tlsext_hostname : s->tlsext_hostname)) 1521 return (TLSEXT_NAMETYPE_host_name); 1522 return (-1); 1523} 1524 1525/* 1526 * SSL_select_next_proto implements the standard protocol selection. It is 1527 * expected that this function is called from the callback set by 1528 * SSL_CTX_set_next_proto_select_cb. 1529 * 1530 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1531 * strings. The length byte itself is not included in the length. A byte 1532 * string of length 0 is invalid. No byte string may be truncated. 1533 * 1534 * The current, but experimental algorithm for selecting the protocol is: 1535 * 1536 * 1) If the server doesn't support NPN then this is indicated to the 1537 * callback. In this case, the client application has to abort the connection 1538 * or have a default application level protocol. 1539 * 1540 * 2) If the server supports NPN, but advertises an empty list then the 1541 * client selects the first protcol in its list, but indicates via the 1542 * API that this fallback case was enacted. 1543 * 1544 * 3) Otherwise, the client finds the first protocol in the server's list 1545 * that it supports and selects this protocol. This is because it's 1546 * assumed that the server has better information about which protocol 1547 * a client should use. 1548 * 1549 * 4) If the client doesn't support any of the server's advertised 1550 * protocols, then this is treated the same as case 2. 1551 * 1552 * It returns either 1553 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1554 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1555 */ 1556int 1557SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1558 const unsigned char *server, unsigned int server_len, 1559 const unsigned char *client, unsigned int client_len) 1560{ 1561 unsigned int i, j; 1562 const unsigned char *result; 1563 int status = OPENSSL_NPN_UNSUPPORTED; 1564 1565 /* 1566 * For each protocol in server preference order, 1567 * see if we support it. 1568 */ 1569 for (i = 0; i < server_len; ) { 1570 for (j = 0; j < client_len; ) { 1571 if (server[i] == client[j] && 1572 memcmp(&server[i + 1], 1573 &client[j + 1], server[i]) == 0) { 1574 /* We found a match */ 1575 result = &server[i]; 1576 status = OPENSSL_NPN_NEGOTIATED; 1577 goto found; 1578 } 1579 j += client[j]; 1580 j++; 1581 } 1582 i += server[i]; 1583 i++; 1584 } 1585 1586 /* There's no overlap between our protocols and the server's list. */ 1587 result = client; 1588 status = OPENSSL_NPN_NO_OVERLAP; 1589 1590found: 1591 *out = (unsigned char *) result + 1; 1592 *outlen = result[0]; 1593 return (status); 1594} 1595 1596/* 1597 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1598 * requested protocol for this connection and returns 0. If the client didn't 1599 * request any protocol, then *data is set to NULL. 1600 * 1601 * Note that the client can request any protocol it chooses. The value returned 1602 * from this function need not be a member of the list of supported protocols 1603 * provided by the callback. 1604 */ 1605void 1606SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1607 unsigned *len) 1608{ 1609 *data = s->next_proto_negotiated; 1610 if (!*data) { 1611 *len = 0; 1612 } else { 1613 *len = s->next_proto_negotiated_len; 1614 } 1615} 1616 1617/* 1618 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1619 * TLS server needs a list of supported protocols for Next Protocol 1620 * Negotiation. The returned list must be in wire format. The list is returned 1621 * by setting |out| to point to it and |outlen| to its length. This memory will 1622 * not be modified, but one should assume that the SSL* keeps a reference to 1623 * it. 1624 * 1625 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1626 * Otherwise, no such extension will be included in the ServerHello. 1627 */ 1628void 1629SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1630 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1631{ 1632 ctx->next_protos_advertised_cb = cb; 1633 ctx->next_protos_advertised_cb_arg = arg; 1634} 1635 1636/* 1637 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1638 * client needs to select a protocol from the server's provided list. |out| 1639 * must be set to point to the selected protocol (which may be within |in|). 1640 * The length of the protocol name must be written into |outlen|. The server's 1641 * advertised protocols are provided in |in| and |inlen|. The callback can 1642 * assume that |in| is syntactically valid. 1643 * 1644 * The client must select a protocol. It is fatal to the connection if this 1645 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1646 */ 1647void 1648SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1649 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1650 unsigned int inlen, void *arg), void *arg) 1651{ 1652 ctx->next_proto_select_cb = cb; 1653 ctx->next_proto_select_cb_arg = arg; 1654} 1655 1656/* 1657 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1658 * protocols, which must be in wire-format (i.e. a series of non-empty, 1659 * 8-bit length-prefixed strings). Returns 0 on success. 1660 */ 1661int 1662SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1663 unsigned int protos_len) 1664{ 1665 free(ctx->alpn_client_proto_list); 1666 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1667 return (1); 1668 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1669 ctx->alpn_client_proto_list_len = protos_len; 1670 1671 return (0); 1672} 1673 1674/* 1675 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1676 * protocols, which must be in wire-format (i.e. a series of non-empty, 1677 * 8-bit length-prefixed strings). Returns 0 on success. 1678 */ 1679int 1680SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1681 unsigned int protos_len) 1682{ 1683 free(ssl->alpn_client_proto_list); 1684 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1685 return (1); 1686 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1687 ssl->alpn_client_proto_list_len = protos_len; 1688 1689 return (0); 1690} 1691 1692/* 1693 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1694 * ClientHello processing in order to select an ALPN protocol from the 1695 * client's list of offered protocols. 1696 */ 1697void 1698SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1699 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1700 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1701{ 1702 ctx->alpn_select_cb = cb; 1703 ctx->alpn_select_cb_arg = arg; 1704} 1705 1706/* 1707 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1708 * it sets data to point to len bytes of protocol name (not including the 1709 * leading length-prefix byte). If the server didn't respond with* a negotiated 1710 * protocol then len will be zero. 1711 */ 1712void 1713SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1714 unsigned *len) 1715{ 1716 *data = NULL; 1717 *len = 0; 1718 1719 if (ssl->s3 != NULL) { 1720 *data = ssl->s3->alpn_selected; 1721 *len = ssl->s3->alpn_selected_len; 1722 } 1723} 1724 1725int 1726SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1727 const char *label, size_t llen, const unsigned char *p, size_t plen, 1728 int use_context) 1729{ 1730 if (s->version < TLS1_VERSION) 1731 return (-1); 1732 1733 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1734 label, llen, p, plen, use_context)); 1735} 1736 1737static unsigned long 1738ssl_session_hash(const SSL_SESSION *a) 1739{ 1740 unsigned long l; 1741 1742 l = (unsigned long) 1743 ((unsigned int) a->session_id[0] )| 1744 ((unsigned int) a->session_id[1]<< 8L)| 1745 ((unsigned long)a->session_id[2]<<16L)| 1746 ((unsigned long)a->session_id[3]<<24L); 1747 return (l); 1748} 1749 1750/* 1751 * NB: If this function (or indeed the hash function which uses a sort of 1752 * coarser function than this one) is changed, ensure 1753 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1754 * able to construct an SSL_SESSION that will collide with any existing session 1755 * with a matching session ID. 1756 */ 1757static int 1758ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1759{ 1760 if (a->ssl_version != b->ssl_version) 1761 return (1); 1762 if (a->session_id_length != b->session_id_length) 1763 return (1); 1764 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1765 return (1); 1766 return (0); 1767} 1768 1769/* 1770 * These wrapper functions should remain rather than redeclaring 1771 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1772 * variable. The reason is that the functions aren't static, they're exposed via 1773 * ssl.h. 1774 */ 1775static 1776IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1777static 1778IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1779 1780SSL_CTX * 1781SSL_CTX_new(const SSL_METHOD *meth) 1782{ 1783 SSL_CTX *ret = NULL; 1784 1785 if (meth == NULL) { 1786 SSLerr(SSL_F_SSL_CTX_NEW, 1787 SSL_R_NULL_SSL_METHOD_PASSED); 1788 return (NULL); 1789 } 1790 1791 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1792 SSLerr(SSL_F_SSL_CTX_NEW, 1793 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1794 goto err; 1795 } 1796 ret = calloc(1, sizeof(SSL_CTX)); 1797 if (ret == NULL) 1798 goto err; 1799 1800 ret->method = meth; 1801 1802 ret->cert_store = NULL; 1803 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1804 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1805 ret->session_cache_head = NULL; 1806 ret->session_cache_tail = NULL; 1807 1808 /* We take the system default */ 1809 ret->session_timeout = meth->get_timeout(); 1810 1811 ret->new_session_cb = 0; 1812 ret->remove_session_cb = 0; 1813 ret->get_session_cb = 0; 1814 ret->generate_session_id = 0; 1815 1816 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1817 1818 ret->references = 1; 1819 ret->quiet_shutdown = 0; 1820 1821 ret->info_callback = NULL; 1822 1823 ret->app_verify_callback = 0; 1824 ret->app_verify_arg = NULL; 1825 1826 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1827 ret->read_ahead = 0; 1828 ret->msg_callback = 0; 1829 ret->msg_callback_arg = NULL; 1830 ret->verify_mode = SSL_VERIFY_NONE; 1831 ret->sid_ctx_length = 0; 1832 ret->default_verify_callback = NULL; 1833 if ((ret->cert = ssl_cert_new()) == NULL) 1834 goto err; 1835 1836 ret->default_passwd_callback = 0; 1837 ret->default_passwd_callback_userdata = NULL; 1838 ret->client_cert_cb = 0; 1839 ret->app_gen_cookie_cb = 0; 1840 ret->app_verify_cookie_cb = 0; 1841 1842 ret->sessions = lh_SSL_SESSION_new(); 1843 if (ret->sessions == NULL) 1844 goto err; 1845 ret->cert_store = X509_STORE_new(); 1846 if (ret->cert_store == NULL) 1847 goto err; 1848 1849 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1850 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1851 if (ret->cipher_list == NULL || 1852 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1853 SSLerr(SSL_F_SSL_CTX_NEW, 1854 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1855 goto err2; 1856 } 1857 1858 ret->param = X509_VERIFY_PARAM_new(); 1859 if (!ret->param) 1860 goto err; 1861 1862 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1863 SSLerr(SSL_F_SSL_CTX_NEW, 1864 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1865 goto err2; 1866 } 1867 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1868 SSLerr(SSL_F_SSL_CTX_NEW, 1869 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1870 goto err2; 1871 } 1872 1873 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1874 goto err; 1875 1876 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1877 1878 ret->extra_certs = NULL; 1879 1880 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1881 1882 ret->tlsext_servername_callback = 0; 1883 ret->tlsext_servername_arg = NULL; 1884 1885 /* Setup RFC4507 ticket keys */ 1886 arc4random_buf(ret->tlsext_tick_key_name, 16); 1887 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1888 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1889 1890 ret->tlsext_status_cb = 0; 1891 ret->tlsext_status_arg = NULL; 1892 1893 ret->next_protos_advertised_cb = 0; 1894 ret->next_proto_select_cb = 0; 1895#ifndef OPENSSL_NO_ENGINE 1896 ret->client_cert_engine = NULL; 1897#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1898#define eng_strx(x) #x 1899#define eng_str(x) eng_strx(x) 1900 /* Use specific client engine automatically... ignore errors */ 1901 { 1902 ENGINE *eng; 1903 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1904 if (!eng) { 1905 ERR_clear_error(); 1906 ENGINE_load_builtin_engines(); 1907 eng = ENGINE_by_id(eng_str( 1908 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1909 } 1910 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1911 ERR_clear_error(); 1912 } 1913#endif 1914#endif 1915 /* 1916 * Default is to connect to non-RI servers. When RI is more widely 1917 * deployed might change this. 1918 */ 1919 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1920 1921 /* Disable SSLv3 by default. */ 1922 ret->options |= SSL_OP_NO_SSLv3; 1923 1924 return (ret); 1925err: 1926 SSLerr(SSL_F_SSL_CTX_NEW, 1927 ERR_R_MALLOC_FAILURE); 1928err2: 1929 SSL_CTX_free(ret); 1930 return (NULL); 1931} 1932 1933void 1934SSL_CTX_free(SSL_CTX *a) 1935{ 1936 int i; 1937 1938 if (a == NULL) 1939 return; 1940 1941 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1942 if (i > 0) 1943 return; 1944 1945 if (a->param) 1946 X509_VERIFY_PARAM_free(a->param); 1947 1948 /* 1949 * Free internal session cache. However: the remove_cb() may reference 1950 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1951 * after the sessions were flushed. 1952 * As the ex_data handling routines might also touch the session cache, 1953 * the most secure solution seems to be: empty (flush) the cache, then 1954 * free ex_data, then finally free the cache. 1955 * (See ticket [openssl.org #212].) 1956 */ 1957 if (a->sessions != NULL) 1958 SSL_CTX_flush_sessions(a, 0); 1959 1960 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1961 1962 if (a->sessions != NULL) 1963 lh_SSL_SESSION_free(a->sessions); 1964 1965 if (a->cert_store != NULL) 1966 X509_STORE_free(a->cert_store); 1967 if (a->cipher_list != NULL) 1968 sk_SSL_CIPHER_free(a->cipher_list); 1969 if (a->cipher_list_by_id != NULL) 1970 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1971 if (a->cert != NULL) 1972 ssl_cert_free(a->cert); 1973 if (a->client_CA != NULL) 1974 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1975 if (a->extra_certs != NULL) 1976 sk_X509_pop_free(a->extra_certs, X509_free); 1977 1978#ifndef OPENSSL_NO_SRTP 1979 if (a->srtp_profiles) 1980 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1981#endif 1982 1983#ifndef OPENSSL_NO_ENGINE 1984 if (a->client_cert_engine) 1985 ENGINE_finish(a->client_cert_engine); 1986#endif 1987 1988 free(a->alpn_client_proto_list); 1989 1990 free(a); 1991} 1992 1993void 1994SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1995{ 1996 ctx->default_passwd_callback = cb; 1997} 1998 1999void 2000SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2001{ 2002 ctx->default_passwd_callback_userdata = u; 2003} 2004 2005void 2006SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2007 void *), void *arg) 2008{ 2009 ctx->app_verify_callback = cb; 2010 ctx->app_verify_arg = arg; 2011} 2012 2013void 2014SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2015{ 2016 ctx->verify_mode = mode; 2017 ctx->default_verify_callback = cb; 2018} 2019 2020void 2021SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2022{ 2023 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2024} 2025 2026void 2027ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2028{ 2029 CERT_PKEY *cpk; 2030 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2031 unsigned long mask_k, mask_a; 2032 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2033 int have_ecdh_tmp; 2034 X509 *x = NULL; 2035 EVP_PKEY *ecc_pkey = NULL; 2036 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2037 2038 if (c == NULL) 2039 return; 2040 2041 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2042 c->dh_tmp_auto != 0); 2043 2044 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2045 c->ecdh_tmp_auto != 0); 2046 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2047 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2048 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2049 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2050 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2051 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2052/* FIX THIS EAY EAY EAY */ 2053 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2054 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2055 mask_k = 0; 2056 mask_a = 0; 2057 2058 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2059 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2060 mask_k |= SSL_kGOST; 2061 mask_a |= SSL_aGOST01; 2062 } 2063 2064 if (rsa_enc) 2065 mask_k|=SSL_kRSA; 2066 2067 if (dh_tmp) 2068 mask_k|=SSL_kDHE; 2069 2070 if (rsa_enc || rsa_sign) 2071 mask_a|=SSL_aRSA; 2072 2073 if (dsa_sign) 2074 mask_a|=SSL_aDSS; 2075 2076 mask_a|=SSL_aNULL; 2077 2078 /* 2079 * An ECC certificate may be usable for ECDH and/or 2080 * ECDSA cipher suites depending on the key usage extension. 2081 */ 2082 if (have_ecc_cert) { 2083 /* This call populates extension flags (ex_flags) */ 2084 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2085 X509_check_purpose(x, -1, 0); 2086 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2087 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2088 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2089 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2090 ecc_pkey = X509_get_pubkey(x); 2091 EVP_PKEY_free(ecc_pkey); 2092 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2093 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2094 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2095 } 2096 if (ecdh_ok) { 2097 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2098 mask_k|=SSL_kECDHr; 2099 mask_a|=SSL_aECDH; 2100 } 2101 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2102 mask_k|=SSL_kECDHe; 2103 mask_a|=SSL_aECDH; 2104 } 2105 } 2106 if (ecdsa_ok) 2107 mask_a|=SSL_aECDSA; 2108 } 2109 2110 if (have_ecdh_tmp) { 2111 mask_k|=SSL_kECDHE; 2112 } 2113 2114 2115 c->mask_k = mask_k; 2116 c->mask_a = mask_a; 2117 c->valid = 1; 2118} 2119 2120/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2121#define ku_reject(x, usage) \ 2122 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2123 2124 2125int 2126ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2127{ 2128 unsigned long alg_k, alg_a; 2129 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2130 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2131 2132 alg_k = cs->algorithm_mkey; 2133 alg_a = cs->algorithm_auth; 2134 2135 /* This call populates the ex_flags field correctly */ 2136 X509_check_purpose(x, -1, 0); 2137 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2138 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2139 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2140 } 2141 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2142 /* key usage, if present, must allow key agreement */ 2143 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2144 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2145 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2146 return (0); 2147 } 2148 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2149 TLS1_2_VERSION) { 2150 /* signature alg must be ECDSA */ 2151 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2152 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2153 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2154 return (0); 2155 } 2156 } 2157 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2158 TLS1_2_VERSION) { 2159 /* signature alg must be RSA */ 2160 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2161 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2162 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2163 return (0); 2164 } 2165 } 2166 } 2167 if (alg_a & SSL_aECDSA) { 2168 /* key usage, if present, must allow signing */ 2169 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2170 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2171 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2172 return (0); 2173 } 2174 } 2175 2176 return (1); 2177 /* all checks are ok */ 2178} 2179 2180 2181/* THIS NEEDS CLEANING UP */ 2182CERT_PKEY * 2183ssl_get_server_send_pkey(const SSL *s) 2184{ 2185 unsigned long alg_k, alg_a; 2186 CERT *c; 2187 int i; 2188 2189 c = s->cert; 2190 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2191 2192 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2193 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2194 2195 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2196 /* 2197 * We don't need to look at SSL_kECDHE 2198 * since no certificate is needed for 2199 * anon ECDH and for authenticated 2200 * ECDHE, the check for the auth 2201 * algorithm will set i correctly 2202 * NOTE: For ECDH-RSA, we need an ECC 2203 * not an RSA cert but for EECDH-RSA 2204 * we need an RSA cert. Placing the 2205 * checks for SSL_kECDH before RSA 2206 * checks ensures the correct cert is chosen. 2207 */ 2208 i = SSL_PKEY_ECC; 2209 } else if (alg_a & SSL_aECDSA) { 2210 i = SSL_PKEY_ECC; 2211 } else if (alg_a & SSL_aDSS) { 2212 i = SSL_PKEY_DSA_SIGN; 2213 } else if (alg_a & SSL_aRSA) { 2214 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2215 i = SSL_PKEY_RSA_SIGN; 2216 else 2217 i = SSL_PKEY_RSA_ENC; 2218 } else if (alg_a & SSL_aGOST01) { 2219 i = SSL_PKEY_GOST01; 2220 } else { /* if (alg_a & SSL_aNULL) */ 2221 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2222 return (NULL); 2223 } 2224 2225 return (c->pkeys + i); 2226} 2227 2228X509 * 2229ssl_get_server_send_cert(const SSL *s) 2230{ 2231 CERT_PKEY *cpk; 2232 2233 cpk = ssl_get_server_send_pkey(s); 2234 if (!cpk) 2235 return (NULL); 2236 return (cpk->x509); 2237} 2238 2239EVP_PKEY * 2240ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2241{ 2242 unsigned long alg_a; 2243 CERT *c; 2244 int idx = -1; 2245 2246 alg_a = cipher->algorithm_auth; 2247 c = s->cert; 2248 2249 if ((alg_a & SSL_aDSS) && 2250 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2251 idx = SSL_PKEY_DSA_SIGN; 2252 else if (alg_a & SSL_aRSA) { 2253 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2254 idx = SSL_PKEY_RSA_SIGN; 2255 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2256 idx = SSL_PKEY_RSA_ENC; 2257 } else if ((alg_a & SSL_aECDSA) && 2258 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2259 idx = SSL_PKEY_ECC; 2260 if (idx == -1) { 2261 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2262 return (NULL); 2263 } 2264 if (pmd) 2265 *pmd = c->pkeys[idx].digest; 2266 return (c->pkeys[idx].privatekey); 2267} 2268 2269DH * 2270ssl_get_auto_dh(SSL *s) 2271{ 2272 CERT_PKEY *cpk; 2273 int keylen; 2274 DH *dhp; 2275 2276 if (s->cert->dh_tmp_auto == 2) { 2277 keylen = 1024; 2278 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2279 keylen = 1024; 2280 if (s->s3->tmp.new_cipher->strength_bits == 256) 2281 keylen = 3072; 2282 } else { 2283 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2284 return (NULL); 2285 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2286 return (NULL); 2287 keylen = EVP_PKEY_bits(cpk->privatekey); 2288 } 2289 2290 if ((dhp = DH_new()) == NULL) 2291 return (NULL); 2292 2293 dhp->g = BN_new(); 2294 if (dhp->g != NULL) 2295 BN_set_word(dhp->g, 2); 2296 2297 if (keylen >= 8192) 2298 dhp->p = get_rfc3526_prime_8192(NULL); 2299 else if (keylen >= 4096) 2300 dhp->p = get_rfc3526_prime_4096(NULL); 2301 else if (keylen >= 3072) 2302 dhp->p = get_rfc3526_prime_3072(NULL); 2303 else if (keylen >= 2048) 2304 dhp->p = get_rfc3526_prime_2048(NULL); 2305 else if (keylen >= 1536) 2306 dhp->p = get_rfc3526_prime_1536(NULL); 2307 else 2308 dhp->p = get_rfc2409_prime_1024(NULL); 2309 2310 if (dhp->p == NULL || dhp->g == NULL) { 2311 DH_free(dhp); 2312 return (NULL); 2313 } 2314 return (dhp); 2315} 2316 2317void 2318ssl_update_cache(SSL *s, int mode) 2319{ 2320 int i; 2321 2322 /* 2323 * If the session_id_length is 0, we are not supposed to cache it, 2324 * and it would be rather hard to do anyway :-) 2325 */ 2326 if (s->session->session_id_length == 0) 2327 return; 2328 2329 i = s->session_ctx->session_cache_mode; 2330 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2331 || SSL_CTX_add_session(s->session_ctx, s->session)) 2332 && (s->session_ctx->new_session_cb != NULL)) { 2333 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2334 if (!s->session_ctx->new_session_cb(s, s->session)) 2335 SSL_SESSION_free(s->session); 2336 } 2337 2338 /* auto flush every 255 connections */ 2339 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2340 ((i & mode) == mode)) { 2341 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2342 s->session_ctx->stats.sess_connect_good : 2343 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2344 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2345 } 2346 } 2347} 2348 2349const SSL_METHOD * 2350SSL_get_ssl_method(SSL *s) 2351{ 2352 return (s->method); 2353} 2354 2355int 2356SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2357{ 2358 int conn = -1; 2359 int ret = 1; 2360 2361 if (s->method != meth) { 2362 if (s->handshake_func != NULL) 2363 conn = (s->handshake_func == s->method->ssl_connect); 2364 2365 if (s->method->version == meth->version) 2366 s->method = meth; 2367 else { 2368 s->method->ssl_free(s); 2369 s->method = meth; 2370 ret = s->method->ssl_new(s); 2371 } 2372 2373 if (conn == 1) 2374 s->handshake_func = meth->ssl_connect; 2375 else if (conn == 0) 2376 s->handshake_func = meth->ssl_accept; 2377 } 2378 return (ret); 2379} 2380 2381int 2382SSL_get_error(const SSL *s, int i) 2383{ 2384 int reason; 2385 unsigned long l; 2386 BIO *bio; 2387 2388 if (i > 0) 2389 return (SSL_ERROR_NONE); 2390 2391 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2392 * etc, where we do encode the error */ 2393 if ((l = ERR_peek_error()) != 0) { 2394 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2395 return (SSL_ERROR_SYSCALL); 2396 else 2397 return (SSL_ERROR_SSL); 2398 } 2399 2400 if ((i < 0) && SSL_want_read(s)) { 2401 bio = SSL_get_rbio(s); 2402 if (BIO_should_read(bio)) { 2403 return (SSL_ERROR_WANT_READ); 2404 } else if (BIO_should_write(bio)) { 2405 /* 2406 * This one doesn't make too much sense... We never 2407 * try to write to the rbio, and an application 2408 * program where rbio and wbio are separate couldn't 2409 * even know what it should wait for. However if we 2410 * ever set s->rwstate incorrectly (so that we have 2411 * SSL_want_read(s) instead of SSL_want_write(s)) 2412 * and rbio and wbio *are* the same, this test works 2413 * around that bug; so it might be safer to keep it. 2414 */ 2415 return (SSL_ERROR_WANT_WRITE); 2416 } else if (BIO_should_io_special(bio)) { 2417 reason = BIO_get_retry_reason(bio); 2418 if (reason == BIO_RR_CONNECT) 2419 return (SSL_ERROR_WANT_CONNECT); 2420 else if (reason == BIO_RR_ACCEPT) 2421 return (SSL_ERROR_WANT_ACCEPT); 2422 else 2423 return (SSL_ERROR_SYSCALL); /* unknown */ 2424 } 2425 } 2426 2427 if ((i < 0) && SSL_want_write(s)) { 2428 bio = SSL_get_wbio(s); 2429 if (BIO_should_write(bio)) { 2430 return (SSL_ERROR_WANT_WRITE); 2431 } else if (BIO_should_read(bio)) { 2432 /* 2433 * See above (SSL_want_read(s) with 2434 * BIO_should_write(bio)) 2435 */ 2436 return (SSL_ERROR_WANT_READ); 2437 } else if (BIO_should_io_special(bio)) { 2438 reason = BIO_get_retry_reason(bio); 2439 if (reason == BIO_RR_CONNECT) 2440 return (SSL_ERROR_WANT_CONNECT); 2441 else if (reason == BIO_RR_ACCEPT) 2442 return (SSL_ERROR_WANT_ACCEPT); 2443 else 2444 return (SSL_ERROR_SYSCALL); 2445 } 2446 } 2447 if ((i < 0) && SSL_want_x509_lookup(s)) { 2448 return (SSL_ERROR_WANT_X509_LOOKUP); 2449 } 2450 2451 if (i == 0) { 2452 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2453 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2454 return (SSL_ERROR_ZERO_RETURN); 2455 } 2456 return (SSL_ERROR_SYSCALL); 2457} 2458 2459int 2460SSL_do_handshake(SSL *s) 2461{ 2462 int ret = 1; 2463 2464 if (s->handshake_func == NULL) { 2465 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2466 SSL_R_CONNECTION_TYPE_NOT_SET); 2467 return (-1); 2468 } 2469 2470 s->method->ssl_renegotiate_check(s); 2471 2472 if (SSL_in_init(s) || SSL_in_before(s)) { 2473 ret = s->handshake_func(s); 2474 } 2475 return (ret); 2476} 2477 2478/* 2479 * For the next 2 functions, SSL_clear() sets shutdown and so 2480 * one of these calls will reset it 2481 */ 2482void 2483SSL_set_accept_state(SSL *s) 2484{ 2485 s->server = 1; 2486 s->shutdown = 0; 2487 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2488 s->handshake_func = s->method->ssl_accept; 2489 /* clear the current cipher */ 2490 ssl_clear_cipher_ctx(s); 2491 ssl_clear_hash_ctx(&s->read_hash); 2492 ssl_clear_hash_ctx(&s->write_hash); 2493} 2494 2495void 2496SSL_set_connect_state(SSL *s) 2497{ 2498 s->server = 0; 2499 s->shutdown = 0; 2500 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2501 s->handshake_func = s->method->ssl_connect; 2502 /* clear the current cipher */ 2503 ssl_clear_cipher_ctx(s); 2504 ssl_clear_hash_ctx(&s->read_hash); 2505 ssl_clear_hash_ctx(&s->write_hash); 2506} 2507 2508int 2509ssl_undefined_function(SSL *s) 2510{ 2511 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2512 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2513 return (0); 2514} 2515 2516int 2517ssl_undefined_void_function(void) 2518{ 2519 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2520 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2521 return (0); 2522} 2523 2524int 2525ssl_undefined_const_function(const SSL *s) 2526{ 2527 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2528 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2529 return (0); 2530} 2531 2532SSL_METHOD * 2533ssl_bad_method(int ver) 2534{ 2535 SSLerr(SSL_F_SSL_BAD_METHOD, 2536 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2537 return (NULL); 2538} 2539 2540const char * 2541ssl_version_string(int ver) 2542{ 2543 switch (ver) { 2544 case DTLS1_BAD_VER: 2545 return (SSL_TXT_DTLS1_BAD); 2546 case DTLS1_VERSION: 2547 return (SSL_TXT_DTLS1); 2548 case SSL3_VERSION: 2549 return (SSL_TXT_SSLV3); 2550 case TLS1_VERSION: 2551 return (SSL_TXT_TLSV1); 2552 case TLS1_1_VERSION: 2553 return (SSL_TXT_TLSV1_1); 2554 case TLS1_2_VERSION: 2555 return (SSL_TXT_TLSV1_2); 2556 default: 2557 return ("unknown"); 2558 } 2559} 2560 2561const char * 2562SSL_get_version(const SSL *s) 2563{ 2564 return ssl_version_string(s->version); 2565} 2566 2567uint16_t 2568ssl_max_server_version(SSL *s) 2569{ 2570 uint16_t max_version; 2571 2572 /* 2573 * The SSL method will be changed during version negotiation, as such 2574 * we want to use the SSL method from the context. 2575 */ 2576 max_version = s->ctx->method->version; 2577 2578 if (SSL_IS_DTLS(s)) 2579 return (DTLS1_VERSION); 2580 2581 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2582 max_version >= TLS1_2_VERSION) 2583 return (TLS1_2_VERSION); 2584 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2585 max_version >= TLS1_1_VERSION) 2586 return (TLS1_1_VERSION); 2587 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2588 max_version >= TLS1_VERSION) 2589 return (TLS1_VERSION); 2590 if ((s->options & SSL_OP_NO_SSLv3) == 0 && 2591 max_version >= SSL3_VERSION) 2592 return (SSL3_VERSION); 2593 2594 return (0); 2595} 2596 2597SSL * 2598SSL_dup(SSL *s) 2599{ 2600 STACK_OF(X509_NAME) *sk; 2601 X509_NAME *xn; 2602 SSL *ret; 2603 int i; 2604 2605 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2606 return (NULL); 2607 2608 ret->version = s->version; 2609 ret->type = s->type; 2610 ret->method = s->method; 2611 2612 if (s->session != NULL) { 2613 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2614 SSL_copy_session_id(ret, s); 2615 } else { 2616 /* 2617 * No session has been established yet, so we have to expect 2618 * that s->cert or ret->cert will be changed later -- 2619 * they should not both point to the same object, 2620 * and thus we can't use SSL_copy_session_id. 2621 */ 2622 2623 ret->method->ssl_free(ret); 2624 ret->method = s->method; 2625 ret->method->ssl_new(ret); 2626 2627 if (s->cert != NULL) { 2628 if (ret->cert != NULL) { 2629 ssl_cert_free(ret->cert); 2630 } 2631 ret->cert = ssl_cert_dup(s->cert); 2632 if (ret->cert == NULL) 2633 goto err; 2634 } 2635 2636 SSL_set_session_id_context(ret, 2637 s->sid_ctx, s->sid_ctx_length); 2638 } 2639 2640 ret->options = s->options; 2641 ret->mode = s->mode; 2642 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2643 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2644 ret->msg_callback = s->msg_callback; 2645 ret->msg_callback_arg = s->msg_callback_arg; 2646 SSL_set_verify(ret, SSL_get_verify_mode(s), 2647 SSL_get_verify_callback(s)); 2648 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2649 ret->generate_session_id = s->generate_session_id; 2650 2651 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2652 2653 ret->debug = s->debug; 2654 2655 /* copy app data, a little dangerous perhaps */ 2656 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2657 &ret->ex_data, &s->ex_data)) 2658 goto err; 2659 2660 /* setup rbio, and wbio */ 2661 if (s->rbio != NULL) { 2662 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2663 goto err; 2664 } 2665 if (s->wbio != NULL) { 2666 if (s->wbio != s->rbio) { 2667 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2668 goto err; 2669 } else 2670 ret->wbio = ret->rbio; 2671 } 2672 ret->rwstate = s->rwstate; 2673 ret->in_handshake = s->in_handshake; 2674 ret->handshake_func = s->handshake_func; 2675 ret->server = s->server; 2676 ret->renegotiate = s->renegotiate; 2677 ret->new_session = s->new_session; 2678 ret->quiet_shutdown = s->quiet_shutdown; 2679 ret->shutdown = s->shutdown; 2680 /* SSL_dup does not really work at any state, though */ 2681 ret->state=s->state; 2682 ret->rstate = s->rstate; 2683 2684 /* 2685 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2686 * ret->init_off 2687 */ 2688 ret->init_num = 0; 2689 2690 ret->hit = s->hit; 2691 2692 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2693 2694 /* dup the cipher_list and cipher_list_by_id stacks */ 2695 if (s->cipher_list != NULL) { 2696 if ((ret->cipher_list = 2697 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2698 goto err; 2699 } 2700 if (s->cipher_list_by_id != NULL) { 2701 if ((ret->cipher_list_by_id = 2702 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2703 goto err; 2704 } 2705 2706 /* Dup the client_CA list */ 2707 if (s->client_CA != NULL) { 2708 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2709 ret->client_CA = sk; 2710 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2711 xn = sk_X509_NAME_value(sk, i); 2712 if (sk_X509_NAME_set(sk, i, 2713 X509_NAME_dup(xn)) == NULL) { 2714 X509_NAME_free(xn); 2715 goto err; 2716 } 2717 } 2718 } 2719 2720 if (0) { 2721err: 2722 if (ret != NULL) 2723 SSL_free(ret); 2724 ret = NULL; 2725 } 2726 return (ret); 2727} 2728 2729void 2730ssl_clear_cipher_ctx(SSL *s) 2731{ 2732 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2733 s->enc_read_ctx = NULL; 2734 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2735 s->enc_write_ctx = NULL; 2736 2737 if (s->aead_read_ctx != NULL) { 2738 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2739 free(s->aead_read_ctx); 2740 s->aead_read_ctx = NULL; 2741 } 2742 if (s->aead_write_ctx != NULL) { 2743 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2744 free(s->aead_write_ctx); 2745 s->aead_write_ctx = NULL; 2746 } 2747 2748} 2749 2750/* Fix this function so that it takes an optional type parameter */ 2751X509 * 2752SSL_get_certificate(const SSL *s) 2753{ 2754 if (s->cert != NULL) 2755 return (s->cert->key->x509); 2756 else 2757 return (NULL); 2758} 2759 2760/* Fix this function so that it takes an optional type parameter */ 2761EVP_PKEY * 2762SSL_get_privatekey(SSL *s) 2763{ 2764 if (s->cert != NULL) 2765 return (s->cert->key->privatekey); 2766 else 2767 return (NULL); 2768} 2769 2770const SSL_CIPHER * 2771SSL_get_current_cipher(const SSL *s) 2772{ 2773 if ((s->session != NULL) && (s->session->cipher != NULL)) 2774 return (s->session->cipher); 2775 return (NULL); 2776} 2777const void * 2778SSL_get_current_compression(SSL *s) 2779{ 2780 return (NULL); 2781} 2782 2783const void * 2784SSL_get_current_expansion(SSL *s) 2785{ 2786 return (NULL); 2787} 2788 2789int 2790ssl_init_wbio_buffer(SSL *s, int push) 2791{ 2792 BIO *bbio; 2793 2794 if (s->bbio == NULL) { 2795 bbio = BIO_new(BIO_f_buffer()); 2796 if (bbio == NULL) 2797 return (0); 2798 s->bbio = bbio; 2799 } else { 2800 bbio = s->bbio; 2801 if (s->bbio == s->wbio) 2802 s->wbio = BIO_pop(s->wbio); 2803 } 2804 (void)BIO_reset(bbio); 2805/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2806 if (!BIO_set_read_buffer_size(bbio, 1)) { 2807 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2808 ERR_R_BUF_LIB); 2809 return (0); 2810 } 2811 if (push) { 2812 if (s->wbio != bbio) 2813 s->wbio = BIO_push(bbio, s->wbio); 2814 } else { 2815 if (s->wbio == bbio) 2816 s->wbio = BIO_pop(bbio); 2817 } 2818 return (1); 2819} 2820 2821void 2822ssl_free_wbio_buffer(SSL *s) 2823{ 2824 if (s->bbio == NULL) 2825 return; 2826 2827 if (s->bbio == s->wbio) { 2828 /* remove buffering */ 2829 s->wbio = BIO_pop(s->wbio); 2830 } 2831 BIO_free(s->bbio); 2832 s->bbio = NULL; 2833} 2834 2835void 2836SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2837{ 2838 ctx->quiet_shutdown = mode; 2839} 2840 2841int 2842SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2843{ 2844 return (ctx->quiet_shutdown); 2845} 2846 2847void 2848SSL_set_quiet_shutdown(SSL *s, int mode) 2849{ 2850 s->quiet_shutdown = mode; 2851} 2852 2853int 2854SSL_get_quiet_shutdown(const SSL *s) 2855{ 2856 return (s->quiet_shutdown); 2857} 2858 2859void 2860SSL_set_shutdown(SSL *s, int mode) 2861{ 2862 s->shutdown = mode; 2863} 2864 2865int 2866SSL_get_shutdown(const SSL *s) 2867{ 2868 return (s->shutdown); 2869} 2870 2871int 2872SSL_version(const SSL *s) 2873{ 2874 return (s->version); 2875} 2876 2877SSL_CTX * 2878SSL_get_SSL_CTX(const SSL *ssl) 2879{ 2880 return (ssl->ctx); 2881} 2882 2883SSL_CTX * 2884SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2885{ 2886 if (ssl->ctx == ctx) 2887 return (ssl->ctx); 2888 if (ctx == NULL) 2889 ctx = ssl->initial_ctx; 2890 if (ssl->cert != NULL) 2891 ssl_cert_free(ssl->cert); 2892 ssl->cert = ssl_cert_dup(ctx->cert); 2893 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2894 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2895 ssl->ctx = ctx; 2896 return (ssl->ctx); 2897} 2898 2899int 2900SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2901{ 2902 return (X509_STORE_set_default_paths(ctx->cert_store)); 2903} 2904 2905int 2906SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2907 const char *CApath) 2908{ 2909 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2910} 2911 2912int 2913SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2914{ 2915 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2916} 2917 2918void 2919SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2920{ 2921 ssl->info_callback = cb; 2922} 2923 2924void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2925{ 2926 return (ssl->info_callback); 2927} 2928 2929int 2930SSL_state(const SSL *ssl) 2931{ 2932 return (ssl->state); 2933} 2934 2935void 2936SSL_set_state(SSL *ssl, int state) 2937{ 2938 ssl->state = state; 2939} 2940 2941void 2942SSL_set_verify_result(SSL *ssl, long arg) 2943{ 2944 ssl->verify_result = arg; 2945} 2946 2947long 2948SSL_get_verify_result(const SSL *ssl) 2949{ 2950 return (ssl->verify_result); 2951} 2952 2953int 2954SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2955 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2956{ 2957 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2958 new_func, dup_func, free_func)); 2959} 2960 2961int 2962SSL_set_ex_data(SSL *s, int idx, void *arg) 2963{ 2964 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2965} 2966 2967void * 2968SSL_get_ex_data(const SSL *s, int idx) 2969{ 2970 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2971} 2972 2973int 2974SSL_CTX_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_CTX, argl, argp, 2978 new_func, dup_func, free_func)); 2979} 2980 2981int 2982SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2983{ 2984 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2985} 2986 2987void * 2988SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2989{ 2990 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2991} 2992 2993int 2994ssl_ok(SSL *s) 2995{ 2996 return (1); 2997} 2998 2999X509_STORE * 3000SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3001{ 3002 return (ctx->cert_store); 3003} 3004 3005void 3006SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3007{ 3008 if (ctx->cert_store != NULL) 3009 X509_STORE_free(ctx->cert_store); 3010 ctx->cert_store = store; 3011} 3012 3013int 3014SSL_want(const SSL *s) 3015{ 3016 return (s->rwstate); 3017} 3018 3019void 3020SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3021 int keylength)) 3022{ 3023 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3024} 3025 3026void 3027SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3028 int keylength)) 3029{ 3030 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3031} 3032 3033void 3034SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3035 int keylength)) 3036{ 3037 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3038} 3039 3040void 3041SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3042 int keylength)) 3043{ 3044 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3045} 3046 3047void 3048SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3049 int is_export, int keylength)) 3050{ 3051 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3052 (void (*)(void))ecdh); 3053} 3054 3055void 3056SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3057 int keylength)) 3058{ 3059 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3060} 3061 3062 3063void 3064SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3065 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3066{ 3067 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3068 (void (*)(void))cb); 3069} 3070 3071void 3072SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3073 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3074{ 3075 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3076} 3077 3078/* 3079 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3080 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3081 * any. If EVP_MD pointer is passed, initializes ctx with this md 3082 * Returns newly allocated ctx; 3083 */ 3084EVP_MD_CTX * 3085ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3086{ 3087 ssl_clear_hash_ctx(hash); 3088 *hash = EVP_MD_CTX_create(); 3089 if (*hash != NULL && md != NULL) { 3090 if (!EVP_DigestInit_ex(*hash, md, NULL)) { 3091 ssl_clear_hash_ctx(hash); 3092 return (NULL); 3093 } 3094 } 3095 return (*hash); 3096} 3097 3098void 3099ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3100{ 3101 if (*hash) 3102 EVP_MD_CTX_destroy(*hash); 3103 *hash = NULL; 3104} 3105 3106void 3107SSL_set_debug(SSL *s, int debug) 3108{ 3109 s->debug = debug; 3110} 3111 3112int 3113SSL_cache_hit(SSL *s) 3114{ 3115 return (s->hit); 3116} 3117 3118IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3119