ssl_lib.c revision 1.70
1/* $OpenBSD: ssl_lib.c,v 1.70 2014/07/09 11:25:42 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#ifndef OPENSSL_NO_PSK 353 s->psk_client_callback = ctx->psk_client_callback; 354 s->psk_server_callback = ctx->psk_server_callback; 355#endif 356 357 return (s); 358err: 359 if (s != NULL) { 360 if (s->cert != NULL) 361 ssl_cert_free(s->cert); 362 if (s->ctx != NULL) 363 SSL_CTX_free(s->ctx); /* decrement reference count */ 364 free(s); 365 } 366 SSLerr(SSL_F_SSL_NEW, 367 ERR_R_MALLOC_FAILURE); 368 return (NULL); 369} 370 371int 372SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 373 unsigned int sid_ctx_len) 374{ 375 if (sid_ctx_len > sizeof ctx->sid_ctx) { 376 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 377 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 378 return (0); 379 } 380 ctx->sid_ctx_length = sid_ctx_len; 381 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 382 383 return (1); 384} 385 386int 387SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 388 unsigned int sid_ctx_len) 389{ 390 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 391 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 392 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 393 return (0); 394 } 395 ssl->sid_ctx_length = sid_ctx_len; 396 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 397 398 return (1); 399} 400 401int 402SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 403{ 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 405 ctx->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 407 return (1); 408} 409 410int 411SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 412{ 413 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 414 ssl->generate_session_id = cb; 415 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 416 return (1); 417} 418 419int 420SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 421 unsigned int id_len) 422{ 423 /* 424 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 425 * shows how we can "construct" a session to give us the desired 426 * check - ie. to find if there's a session in the hash table 427 * that would conflict with any new session built out of this 428 * id/id_len and the ssl_version in use by this SSL. 429 */ 430 SSL_SESSION r, *p; 431 432 if (id_len > sizeof r.session_id) 433 return (0); 434 435 r.ssl_version = ssl->version; 436 r.session_id_length = id_len; 437 memcpy(r.session_id, id, id_len); 438 439 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 440 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 441 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 442 return (p != NULL); 443} 444 445int 446SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 447{ 448 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 449} 450 451int 452SSL_set_purpose(SSL *s, int purpose) 453{ 454 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 455} 456 457int 458SSL_CTX_set_trust(SSL_CTX *s, int trust) 459{ 460 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 461} 462 463int 464SSL_set_trust(SSL *s, int trust) 465{ 466 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 467} 468 469int 470SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 471{ 472 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 473} 474 475int 476SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 477{ 478 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 479} 480 481void 482SSL_free(SSL *s) 483{ 484 int i; 485 486 if (s == NULL) 487 return; 488 489 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 490 if (i > 0) 491 return; 492 493 if (s->param) 494 X509_VERIFY_PARAM_free(s->param); 495 496 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 497 498 if (s->bbio != NULL) { 499 /* If the buffering BIO is in place, pop it off */ 500 if (s->bbio == s->wbio) { 501 s->wbio = BIO_pop(s->wbio); 502 } 503 BIO_free(s->bbio); 504 s->bbio = NULL; 505 } 506 if (s->rbio != NULL) 507 BIO_free_all(s->rbio); 508 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 509 BIO_free_all(s->wbio); 510 511 if (s->init_buf != NULL) 512 BUF_MEM_free(s->init_buf); 513 514 /* add extra stuff */ 515 if (s->cipher_list != NULL) 516 sk_SSL_CIPHER_free(s->cipher_list); 517 if (s->cipher_list_by_id != NULL) 518 sk_SSL_CIPHER_free(s->cipher_list_by_id); 519 520 /* Make the next call work :-) */ 521 if (s->session != NULL) { 522 ssl_clear_bad_session(s); 523 SSL_SESSION_free(s->session); 524 } 525 526 ssl_clear_cipher_ctx(s); 527 ssl_clear_hash_ctx(&s->read_hash); 528 ssl_clear_hash_ctx(&s->write_hash); 529 530 if (s->cert != NULL) 531 ssl_cert_free(s->cert); 532 /* Free up if allocated */ 533 534 free(s->tlsext_hostname); 535 if (s->initial_ctx) 536 SSL_CTX_free(s->initial_ctx); 537 free(s->tlsext_ecpointformatlist); 538 free(s->tlsext_ellipticcurvelist); 539 if (s->tlsext_ocsp_exts) 540 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 541 X509_EXTENSION_free); 542 if (s->tlsext_ocsp_ids) 543 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 544 free(s->tlsext_ocsp_resp); 545 546 if (s->client_CA != NULL) 547 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 548 549 if (s->method != NULL) 550 s->method->ssl_free(s); 551 552 if (s->ctx) 553 SSL_CTX_free(s->ctx); 554 555 556#ifndef OPENSSL_NO_NEXTPROTONEG 557 free(s->next_proto_negotiated); 558#endif 559 560#ifndef OPENSSL_NO_SRTP 561 if (s->srtp_profiles) 562 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 563#endif 564 565 free(s); 566} 567 568void 569SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 570{ 571 /* If the output buffering BIO is still in place, remove it */ 572 if (s->bbio != NULL) { 573 if (s->wbio == s->bbio) { 574 s->wbio = s->wbio->next_bio; 575 s->bbio->next_bio = NULL; 576 } 577 } 578 if ((s->rbio != NULL) && (s->rbio != rbio)) 579 BIO_free_all(s->rbio); 580 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 581 BIO_free_all(s->wbio); 582 s->rbio = rbio; 583 s->wbio = wbio; 584} 585 586BIO * 587SSL_get_rbio(const SSL *s) 588{ 589 return (s->rbio); 590} 591 592BIO * 593SSL_get_wbio(const SSL *s) 594{ 595 return (s->wbio); 596} 597 598int 599SSL_get_fd(const SSL *s) 600{ 601 return (SSL_get_rfd(s)); 602} 603 604int 605SSL_get_rfd(const SSL *s) 606{ 607 int ret = -1; 608 BIO *b, *r; 609 610 b = SSL_get_rbio(s); 611 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 612 if (r != NULL) 613 BIO_get_fd(r, &ret); 614 return (ret); 615} 616 617int 618SSL_get_wfd(const SSL *s) 619{ 620 int ret = -1; 621 BIO *b, *r; 622 623 b = SSL_get_wbio(s); 624 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 625 if (r != NULL) 626 BIO_get_fd(r, &ret); 627 return (ret); 628} 629 630int 631SSL_set_fd(SSL *s, int fd) 632{ 633 int ret = 0; 634 BIO *bio = NULL; 635 636 bio = BIO_new(BIO_s_socket()); 637 638 if (bio == NULL) { 639 SSLerr(SSL_F_SSL_SET_FD, 640 ERR_R_BUF_LIB); 641 goto err; 642 } 643 BIO_set_fd(bio, fd, BIO_NOCLOSE); 644 SSL_set_bio(s, bio, bio); 645 ret = 1; 646err: 647 return (ret); 648} 649 650int 651SSL_set_wfd(SSL *s, int fd) 652{ 653 int ret = 0; 654 BIO *bio = NULL; 655 656 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 657 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 658 bio = BIO_new(BIO_s_socket()); 659 660 if (bio == NULL) { 661 SSLerr(SSL_F_SSL_SET_WFD, 662 ERR_R_BUF_LIB); 663 goto err; 664 } 665 BIO_set_fd(bio, fd, BIO_NOCLOSE); 666 SSL_set_bio(s, SSL_get_rbio(s), bio); 667 } else 668 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 669 ret = 1; 670err: 671 return (ret); 672} 673 674int 675SSL_set_rfd(SSL *s, int fd) 676{ 677 int ret = 0; 678 BIO *bio = NULL; 679 680 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 681 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 682 bio = BIO_new(BIO_s_socket()); 683 684 if (bio == NULL) { 685 SSLerr(SSL_F_SSL_SET_RFD, 686 ERR_R_BUF_LIB); 687 goto err; 688 } 689 BIO_set_fd(bio, fd, BIO_NOCLOSE); 690 SSL_set_bio(s, bio, SSL_get_wbio(s)); 691 } else 692 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 693 ret = 1; 694err: 695 return (ret); 696} 697 698 699/* return length of latest Finished message we sent, copy to 'buf' */ 700size_t 701SSL_get_finished(const SSL *s, void *buf, size_t count) 702{ 703 size_t ret = 0; 704 705 if (s->s3 != NULL) { 706 ret = s->s3->tmp.finish_md_len; 707 if (count > ret) 708 count = ret; 709 memcpy(buf, s->s3->tmp.finish_md, count); 710 } 711 return (ret); 712} 713 714/* return length of latest Finished message we expected, copy to 'buf' */ 715size_t 716SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 717{ 718 size_t ret = 0; 719 720 if (s->s3 != NULL) { 721 ret = s->s3->tmp.peer_finish_md_len; 722 if (count > ret) 723 count = ret; 724 memcpy(buf, s->s3->tmp.peer_finish_md, count); 725 } 726 return (ret); 727} 728 729 730int 731SSL_get_verify_mode(const SSL *s) 732{ 733 return (s->verify_mode); 734} 735 736int 737SSL_get_verify_depth(const SSL *s) 738{ 739 return (X509_VERIFY_PARAM_get_depth(s->param)); 740} 741 742int 743(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 744{ 745 return (s->verify_callback); 746} 747 748int 749SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 750{ 751 return (ctx->verify_mode); 752} 753 754int 755SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 756{ 757 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 758} 759 760int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 761{ 762 return (ctx->default_verify_callback); 763} 764 765void 766SSL_set_verify(SSL *s, int mode, 767 int (*callback)(int ok, X509_STORE_CTX *ctx)) 768{ 769 s->verify_mode = mode; 770 if (callback != NULL) 771 s->verify_callback = callback; 772} 773 774void 775SSL_set_verify_depth(SSL *s, int depth) 776{ 777 X509_VERIFY_PARAM_set_depth(s->param, depth); 778} 779 780void 781SSL_set_read_ahead(SSL *s, int yes) 782{ 783 s->read_ahead = yes; 784} 785 786int 787SSL_get_read_ahead(const SSL *s) 788{ 789 return (s->read_ahead); 790} 791 792int 793SSL_pending(const SSL *s) 794{ 795 /* 796 * SSL_pending cannot work properly if read-ahead is enabled 797 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 798 * and it is impossible to fix since SSL_pending cannot report 799 * errors that may be observed while scanning the new data. 800 * (Note that SSL_pending() is often used as a boolean value, 801 * so we'd better not return -1.) 802 */ 803 return (s->method->ssl_pending(s)); 804} 805 806X509 * 807SSL_get_peer_certificate(const SSL *s) 808{ 809 X509 *r; 810 811 if ((s == NULL) || (s->session == NULL)) 812 r = NULL; 813 else 814 r = s->session->peer; 815 816 if (r == NULL) 817 return (r); 818 819 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 820 821 return (r); 822} 823 824STACK_OF(X509) * 825SSL_get_peer_cert_chain(const SSL *s) 826{ 827 STACK_OF(X509) *r; 828 829 if ((s == NULL) || (s->session == NULL) || 830 (s->session->sess_cert == NULL)) 831 r = NULL; 832 else 833 r = s->session->sess_cert->cert_chain; 834 835 /* 836 * If we are a client, cert_chain includes the peer's own 837 * certificate; 838 * if we are a server, it does not. 839 */ 840 return (r); 841} 842 843/* 844 * Now in theory, since the calling process own 't' it should be safe to 845 * modify. We need to be able to read f without being hassled 846 */ 847void 848SSL_copy_session_id(SSL *t, const SSL *f) 849{ 850 CERT *tmp; 851 852 /* Do we need to to SSL locking? */ 853 SSL_set_session(t, SSL_get_session(f)); 854 855 /* 856 * What if we are setup as SSLv2 but want to talk SSLv3 or 857 * vice-versa. 858 */ 859 if (t->method != f->method) { 860 t->method->ssl_free(t); /* cleanup current */ 861 t->method=f->method; /* change method */ 862 t->method->ssl_new(t); /* setup new */ 863 } 864 865 tmp = t->cert; 866 if (f->cert != NULL) { 867 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 868 t->cert = f->cert; 869 } else 870 t->cert = NULL; 871 if (tmp != NULL) 872 ssl_cert_free(tmp); 873 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 874} 875 876/* Fix this so it checks all the valid key/cert options */ 877int 878SSL_CTX_check_private_key(const SSL_CTX *ctx) 879{ 880 if ((ctx == NULL) || (ctx->cert == NULL) || 881 (ctx->cert->key->x509 == NULL)) { 882 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 883 SSL_R_NO_CERTIFICATE_ASSIGNED); 884 return (0); 885 } 886 if (ctx->cert->key->privatekey == NULL) { 887 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 888 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 889 return (0); 890 } 891 return (X509_check_private_key(ctx->cert->key->x509, 892 ctx->cert->key->privatekey)); 893} 894 895/* Fix this function so that it takes an optional type parameter */ 896int 897SSL_check_private_key(const SSL *ssl) 898{ 899 if (ssl == NULL) { 900 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 901 ERR_R_PASSED_NULL_PARAMETER); 902 return (0); 903 } 904 if (ssl->cert == NULL) { 905 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 906 SSL_R_NO_CERTIFICATE_ASSIGNED); 907 return (0); 908 } 909 if (ssl->cert->key->x509 == NULL) { 910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 911 SSL_R_NO_CERTIFICATE_ASSIGNED); 912 return (0); 913 } 914 if (ssl->cert->key->privatekey == NULL) { 915 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 916 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 917 return (0); 918 } 919 return (X509_check_private_key(ssl->cert->key->x509, 920 ssl->cert->key->privatekey)); 921} 922 923int 924SSL_accept(SSL *s) 925{ 926 if (s->handshake_func == 0) 927 SSL_set_accept_state(s); /* Not properly initialized yet */ 928 929 return (s->method->ssl_accept(s)); 930} 931 932int 933SSL_connect(SSL *s) 934{ 935 if (s->handshake_func == 0) 936 SSL_set_connect_state(s); /* Not properly initialized yet */ 937 938 return (s->method->ssl_connect(s)); 939} 940 941long 942SSL_get_default_timeout(const SSL *s) 943{ 944 return (s->method->get_timeout()); 945} 946 947int 948SSL_read(SSL *s, void *buf, int num) 949{ 950 if (s->handshake_func == 0) { 951 SSLerr(SSL_F_SSL_READ, 952 SSL_R_UNINITIALIZED); 953 return (-1); 954 } 955 956 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 957 s->rwstate = SSL_NOTHING; 958 return (0); 959 } 960 return (s->method->ssl_read(s, buf, num)); 961} 962 963int 964SSL_peek(SSL *s, void *buf, int num) 965{ 966 if (s->handshake_func == 0) { 967 SSLerr(SSL_F_SSL_PEEK, 968 SSL_R_UNINITIALIZED); 969 return (-1); 970 } 971 972 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 973 return (0); 974 } 975 return (s->method->ssl_peek(s, buf, num)); 976} 977 978int 979SSL_write(SSL *s, const void *buf, int num) 980{ 981 if (s->handshake_func == 0) { 982 SSLerr(SSL_F_SSL_WRITE, 983 SSL_R_UNINITIALIZED); 984 return (-1); 985 } 986 987 if (s->shutdown & SSL_SENT_SHUTDOWN) { 988 s->rwstate = SSL_NOTHING; 989 SSLerr(SSL_F_SSL_WRITE, 990 SSL_R_PROTOCOL_IS_SHUTDOWN); 991 return (-1); 992 } 993 return (s->method->ssl_write(s, buf, num)); 994} 995 996int 997SSL_shutdown(SSL *s) 998{ 999 /* 1000 * Note that this function behaves differently from what one might 1001 * expect. Return values are 0 for no success (yet), 1002 * 1 for success; but calling it once is usually not enough, 1003 * even if blocking I/O is used (see ssl3_shutdown). 1004 */ 1005 1006 if (s->handshake_func == 0) { 1007 SSLerr(SSL_F_SSL_SHUTDOWN, 1008 SSL_R_UNINITIALIZED); 1009 return (-1); 1010 } 1011 1012 if ((s != NULL) && !SSL_in_init(s)) 1013 return (s->method->ssl_shutdown(s)); 1014 else 1015 return (1); 1016} 1017 1018int 1019SSL_renegotiate(SSL *s) 1020{ 1021 if (s->renegotiate == 0) 1022 s->renegotiate = 1; 1023 1024 s->new_session = 1; 1025 1026 return (s->method->ssl_renegotiate(s)); 1027} 1028 1029int 1030SSL_renegotiate_abbreviated(SSL *s) 1031{ 1032 if (s->renegotiate == 0) 1033 s->renegotiate = 1; 1034 1035 s->new_session = 0; 1036 1037 return (s->method->ssl_renegotiate(s)); 1038} 1039 1040int 1041SSL_renegotiate_pending(SSL *s) 1042{ 1043 /* 1044 * Becomes true when negotiation is requested; 1045 * false again once a handshake has finished. 1046 */ 1047 return (s->renegotiate != 0); 1048} 1049 1050long 1051SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1052{ 1053 long l; 1054 1055 switch (cmd) { 1056 case SSL_CTRL_GET_READ_AHEAD: 1057 return (s->read_ahead); 1058 case SSL_CTRL_SET_READ_AHEAD: 1059 l = s->read_ahead; 1060 s->read_ahead = larg; 1061 return (l); 1062 1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1064 s->msg_callback_arg = parg; 1065 return (1); 1066 1067 case SSL_CTRL_OPTIONS: 1068 return (s->options|=larg); 1069 case SSL_CTRL_CLEAR_OPTIONS: 1070 return (s->options&=~larg); 1071 case SSL_CTRL_MODE: 1072 return (s->mode|=larg); 1073 case SSL_CTRL_CLEAR_MODE: 1074 return (s->mode &=~larg); 1075 case SSL_CTRL_GET_MAX_CERT_LIST: 1076 return (s->max_cert_list); 1077 case SSL_CTRL_SET_MAX_CERT_LIST: 1078 l = s->max_cert_list; 1079 s->max_cert_list = larg; 1080 return (l); 1081 case SSL_CTRL_SET_MTU: 1082#ifndef OPENSSL_NO_DTLS1 1083 if (larg < (long)dtls1_min_mtu()) 1084 return (0); 1085#endif 1086 if (SSL_IS_DTLS(s)) { 1087 s->d1->mtu = larg; 1088 return (larg); 1089 } 1090 return (0); 1091 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1092 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1093 return (0); 1094 s->max_send_fragment = larg; 1095 return (1); 1096 case SSL_CTRL_GET_RI_SUPPORT: 1097 if (s->s3) 1098 return (s->s3->send_connection_binding); 1099 else return (0); 1100 default: 1101 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1102 } 1103} 1104 1105long 1106SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1107{ 1108 switch (cmd) { 1109 case SSL_CTRL_SET_MSG_CALLBACK: 1110 s->msg_callback = (void (*)(int write_p, int version, 1111 int content_type, const void *buf, size_t len, 1112 SSL *ssl, void *arg))(fp); 1113 return (1); 1114 1115 default: 1116 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1117 } 1118} 1119 1120LHASH_OF(SSL_SESSION) * 1121SSL_CTX_sessions(SSL_CTX *ctx) 1122{ 1123 return (ctx->sessions); 1124} 1125 1126long 1127SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1128{ 1129 long l; 1130 1131 switch (cmd) { 1132 case SSL_CTRL_GET_READ_AHEAD: 1133 return (ctx->read_ahead); 1134 case SSL_CTRL_SET_READ_AHEAD: 1135 l = ctx->read_ahead; 1136 ctx->read_ahead = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1140 ctx->msg_callback_arg = parg; 1141 return (1); 1142 1143 case SSL_CTRL_GET_MAX_CERT_LIST: 1144 return (ctx->max_cert_list); 1145 case SSL_CTRL_SET_MAX_CERT_LIST: 1146 l = ctx->max_cert_list; 1147 ctx->max_cert_list = larg; 1148 return (l); 1149 1150 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1151 l = ctx->session_cache_size; 1152 ctx->session_cache_size = larg; 1153 return (l); 1154 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1155 return (ctx->session_cache_size); 1156 case SSL_CTRL_SET_SESS_CACHE_MODE: 1157 l = ctx->session_cache_mode; 1158 ctx->session_cache_mode = larg; 1159 return (l); 1160 case SSL_CTRL_GET_SESS_CACHE_MODE: 1161 return (ctx->session_cache_mode); 1162 1163 case SSL_CTRL_SESS_NUMBER: 1164 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1165 case SSL_CTRL_SESS_CONNECT: 1166 return (ctx->stats.sess_connect); 1167 case SSL_CTRL_SESS_CONNECT_GOOD: 1168 return (ctx->stats.sess_connect_good); 1169 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1170 return (ctx->stats.sess_connect_renegotiate); 1171 case SSL_CTRL_SESS_ACCEPT: 1172 return (ctx->stats.sess_accept); 1173 case SSL_CTRL_SESS_ACCEPT_GOOD: 1174 return (ctx->stats.sess_accept_good); 1175 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1176 return (ctx->stats.sess_accept_renegotiate); 1177 case SSL_CTRL_SESS_HIT: 1178 return (ctx->stats.sess_hit); 1179 case SSL_CTRL_SESS_CB_HIT: 1180 return (ctx->stats.sess_cb_hit); 1181 case SSL_CTRL_SESS_MISSES: 1182 return (ctx->stats.sess_miss); 1183 case SSL_CTRL_SESS_TIMEOUTS: 1184 return (ctx->stats.sess_timeout); 1185 case SSL_CTRL_SESS_CACHE_FULL: 1186 return (ctx->stats.sess_cache_full); 1187 case SSL_CTRL_OPTIONS: 1188 return (ctx->options|=larg); 1189 case SSL_CTRL_CLEAR_OPTIONS: 1190 return (ctx->options&=~larg); 1191 case SSL_CTRL_MODE: 1192 return (ctx->mode|=larg); 1193 case SSL_CTRL_CLEAR_MODE: 1194 return (ctx->mode&=~larg); 1195 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1196 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1197 return (0); 1198 ctx->max_send_fragment = larg; 1199 return (1); 1200 default: 1201 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1202 } 1203} 1204 1205long 1206SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1207{ 1208 switch (cmd) { 1209 case SSL_CTRL_SET_MSG_CALLBACK: 1210 ctx->msg_callback = (void (*)(int write_p, int version, 1211 int content_type, const void *buf, size_t len, SSL *ssl, 1212 void *arg))(fp); 1213 return (1); 1214 1215 default: 1216 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1217 } 1218} 1219 1220int 1221ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1222{ 1223 long l; 1224 1225 l = a->id - b->id; 1226 if (l == 0L) 1227 return (0); 1228 else 1229 return ((l > 0) ? 1:-1); 1230} 1231 1232int 1233ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1234 const SSL_CIPHER * const *bp) 1235{ 1236 long l; 1237 1238 l = (*ap)->id - (*bp)->id; 1239 if (l == 0L) 1240 return (0); 1241 else 1242 return ((l > 0) ? 1:-1); 1243} 1244 1245/* 1246 * Return a STACK of the ciphers available for the SSL and in order of 1247 * preference. 1248 */ 1249STACK_OF(SSL_CIPHER) * 1250SSL_get_ciphers(const SSL *s) 1251{ 1252 if (s != NULL) { 1253 if (s->cipher_list != NULL) { 1254 return (s->cipher_list); 1255 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1256 return (s->ctx->cipher_list); 1257 } 1258 } 1259 return (NULL); 1260} 1261 1262/* 1263 * Return a STACK of the ciphers available for the SSL and in order of 1264 * algorithm id. 1265 */ 1266STACK_OF(SSL_CIPHER) * 1267ssl_get_ciphers_by_id(SSL *s) 1268{ 1269 if (s != NULL) { 1270 if (s->cipher_list_by_id != NULL) { 1271 return (s->cipher_list_by_id); 1272 } else if ((s->ctx != NULL) && 1273 (s->ctx->cipher_list_by_id != NULL)) { 1274 return (s->ctx->cipher_list_by_id); 1275 } 1276 } 1277 return (NULL); 1278} 1279 1280/* The old interface to get the same thing as SSL_get_ciphers(). */ 1281const char * 1282SSL_get_cipher_list(const SSL *s, int n) 1283{ 1284 SSL_CIPHER *c; 1285 STACK_OF(SSL_CIPHER) *sk; 1286 1287 if (s == NULL) 1288 return (NULL); 1289 sk = SSL_get_ciphers(s); 1290 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1291 return (NULL); 1292 c = sk_SSL_CIPHER_value(sk, n); 1293 if (c == NULL) 1294 return (NULL); 1295 return (c->name); 1296} 1297 1298/* Specify the ciphers to be used by default by the SSL_CTX. */ 1299int 1300SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1301{ 1302 STACK_OF(SSL_CIPHER) *sk; 1303 1304 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1305 &ctx->cipher_list_by_id, str); 1306 /* 1307 * ssl_create_cipher_list may return an empty stack if it 1308 * was unable to find a cipher matching the given rule string 1309 * (for example if the rule string specifies a cipher which 1310 * has been disabled). This is not an error as far as 1311 * ssl_create_cipher_list is concerned, and hence 1312 * ctx->cipher_list and ctx->cipher_list_by_id has been 1313 * updated. 1314 */ 1315 if (sk == NULL) 1316 return (0); 1317 else if (sk_SSL_CIPHER_num(sk) == 0) { 1318 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1319 SSL_R_NO_CIPHER_MATCH); 1320 return (0); 1321 } 1322 return (1); 1323} 1324 1325/* Specify the ciphers to be used by the SSL. */ 1326int 1327SSL_set_cipher_list(SSL *s, const char *str) 1328{ 1329 STACK_OF(SSL_CIPHER) *sk; 1330 1331 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1332 &s->cipher_list_by_id, str); 1333 /* see comment in SSL_CTX_set_cipher_list */ 1334 if (sk == NULL) 1335 return (0); 1336 else if (sk_SSL_CIPHER_num(sk) == 0) { 1337 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1338 SSL_R_NO_CIPHER_MATCH); 1339 return (0); 1340 } 1341 return (1); 1342} 1343 1344/* works well for SSLv2, not so good for SSLv3 */ 1345char * 1346SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1347{ 1348 char *end; 1349 STACK_OF(SSL_CIPHER) *sk; 1350 SSL_CIPHER *c; 1351 size_t curlen = 0; 1352 int i; 1353 1354 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1355 (len < 2)) 1356 return (NULL); 1357 1358 sk = s->session->ciphers; 1359 buf[0] = '\0'; 1360 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1361 c = sk_SSL_CIPHER_value(sk, i); 1362 end = buf + curlen; 1363 if (strlcat(buf, c->name, len) >= len || 1364 (curlen = strlcat(buf, ":", len)) >= len) { 1365 /* remove truncated cipher from list */ 1366 *end = '\0'; 1367 break; 1368 } 1369 } 1370 /* remove trailing colon */ 1371 if ((end = strrchr(buf, ':')) != NULL) 1372 *end = '\0'; 1373 return (buf); 1374} 1375 1376int 1377ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1378 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1379{ 1380 int i, j = 0; 1381 SSL_CIPHER *c; 1382 unsigned char *q; 1383 1384 if (sk == NULL) 1385 return (0); 1386 q = p; 1387 1388 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1389 c = sk_SSL_CIPHER_value(sk, i); 1390 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1391 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1392 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1393 continue; 1394#ifndef OPENSSL_NO_PSK 1395 /* with PSK there must be client callback set */ 1396 if (((c->algorithm_mkey & SSL_kPSK) || 1397 (c->algorithm_auth & SSL_aPSK)) && 1398 s->psk_client_callback == NULL) 1399 continue; 1400#endif /* OPENSSL_NO_PSK */ 1401 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1402 p += j; 1403 } 1404 /* 1405 * If p == q, no ciphers and caller indicates an error. Otherwise 1406 * add SCSV if not renegotiating. 1407 */ 1408 if (p != q && !s->renegotiate) { 1409 static SSL_CIPHER scsv = { 1410 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1411 }; 1412 j = put_cb ? put_cb(&scsv, p) : 1413 ssl_put_cipher_by_char(s, &scsv, p); 1414 p += j; 1415 } 1416 1417 return (p - q); 1418} 1419 1420STACK_OF(SSL_CIPHER) * 1421ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1422 STACK_OF(SSL_CIPHER) **skp) 1423{ 1424 const SSL_CIPHER *c; 1425 STACK_OF(SSL_CIPHER) *sk; 1426 int i, n; 1427 1428 if (s->s3) 1429 s->s3->send_connection_binding = 0; 1430 1431 n = ssl_put_cipher_by_char(s, NULL, NULL); 1432 if ((num % n) != 0) { 1433 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1434 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1435 return (NULL); 1436 } 1437 if ((skp == NULL) || (*skp == NULL)) 1438 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1439 else { 1440 sk= *skp; 1441 sk_SSL_CIPHER_zero(sk); 1442 } 1443 1444 for (i = 0; i < num; i += n) { 1445 /* Check for SCSV */ 1446 if (s->s3 && (n != 3 || !p[0]) && 1447 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1448 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1449 /* SCSV fatal if renegotiating */ 1450 if (s->renegotiate) { 1451 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1452 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1453 ssl3_send_alert(s, SSL3_AL_FATAL, 1454 SSL_AD_HANDSHAKE_FAILURE); 1455 1456 goto err; 1457 } 1458 s->s3->send_connection_binding = 1; 1459 p += n; 1460 continue; 1461 } 1462 1463 c = ssl_get_cipher_by_char(s, p); 1464 p += n; 1465 if (c != NULL) { 1466 if (!sk_SSL_CIPHER_push(sk, c)) { 1467 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1468 ERR_R_MALLOC_FAILURE); 1469 goto err; 1470 } 1471 } 1472 } 1473 1474 if (skp != NULL) 1475 *skp = sk; 1476 return (sk); 1477err: 1478 if ((skp == NULL) || (*skp == NULL)) 1479 sk_SSL_CIPHER_free(sk); 1480 return (NULL); 1481} 1482 1483 1484/* 1485 * Return a servername extension value if provided in Client Hello, or NULL. 1486 * So far, only host_name types are defined (RFC 3546). 1487 */ 1488const char * 1489SSL_get_servername(const SSL *s, const int type) 1490{ 1491 if (type != TLSEXT_NAMETYPE_host_name) 1492 return (NULL); 1493 1494 return (s->session && !s->tlsext_hostname ? 1495 s->session->tlsext_hostname : 1496 s->tlsext_hostname); 1497} 1498 1499int 1500SSL_get_servername_type(const SSL *s) 1501{ 1502 if (s->session && 1503 (!s->tlsext_hostname ? 1504 s->session->tlsext_hostname : s->tlsext_hostname)) 1505 return (TLSEXT_NAMETYPE_host_name); 1506 return (-1); 1507} 1508 1509# ifndef OPENSSL_NO_NEXTPROTONEG 1510/* 1511 * SSL_select_next_proto implements the standard protocol selection. It is 1512 * expected that this function is called from the callback set by 1513 * SSL_CTX_set_next_proto_select_cb. 1514 * 1515 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1516 * strings. The length byte itself is not included in the length. A byte 1517 * string of length 0 is invalid. No byte string may be truncated. 1518 * 1519 * The current, but experimental algorithm for selecting the protocol is: 1520 * 1521 * 1) If the server doesn't support NPN then this is indicated to the 1522 * callback. In this case, the client application has to abort the connection 1523 * or have a default application level protocol. 1524 * 1525 * 2) If the server supports NPN, but advertises an empty list then the 1526 * client selects the first protcol in its list, but indicates via the 1527 * API that this fallback case was enacted. 1528 * 1529 * 3) Otherwise, the client finds the first protocol in the server's list 1530 * that it supports and selects this protocol. This is because it's 1531 * assumed that the server has better information about which protocol 1532 * a client should use. 1533 * 1534 * 4) If the client doesn't support any of the server's advertised 1535 * protocols, then this is treated the same as case 2. 1536 * 1537 * It returns either 1538 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1539 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1540 */ 1541int 1542SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1543 const unsigned char *server, unsigned int server_len, 1544 const unsigned char *client, unsigned int client_len) 1545{ 1546 unsigned int i, j; 1547 const unsigned char *result; 1548 int status = OPENSSL_NPN_UNSUPPORTED; 1549 1550 /* 1551 * For each protocol in server preference order, 1552 * see if we support it. 1553 */ 1554 for (i = 0; i < server_len; ) { 1555 for (j = 0; j < client_len; ) { 1556 if (server[i] == client[j] && 1557 memcmp(&server[i + 1], 1558 &client[j + 1], server[i]) == 0) { 1559 /* We found a match */ 1560 result = &server[i]; 1561 status = OPENSSL_NPN_NEGOTIATED; 1562 goto found; 1563 } 1564 j += client[j]; 1565 j++; 1566 } 1567 i += server[i]; 1568 i++; 1569 } 1570 1571 /* There's no overlap between our protocols and the server's list. */ 1572 result = client; 1573 status = OPENSSL_NPN_NO_OVERLAP; 1574 1575found: 1576 *out = (unsigned char *) result + 1; 1577 *outlen = result[0]; 1578 return (status); 1579} 1580 1581/* 1582 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1583 * requested protocol for this connection and returns 0. If the client didn't 1584 * request any protocol, then *data is set to NULL. 1585 * 1586 * Note that the client can request any protocol it chooses. The value returned 1587 * from this function need not be a member of the list of supported protocols 1588 * provided by the callback. 1589 */ 1590void 1591SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1592 unsigned *len) 1593{ 1594 *data = s->next_proto_negotiated; 1595 if (!*data) { 1596 *len = 0; 1597 } else { 1598 *len = s->next_proto_negotiated_len; 1599 } 1600} 1601 1602/* 1603 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1604 * TLS server needs a list of supported protocols for Next Protocol 1605 * Negotiation. The returned list must be in wire format. The list is returned 1606 * by setting |out| to point to it and |outlen| to its length. This memory will 1607 * not be modified, but one should assume that the SSL* keeps a reference to 1608 * it. 1609 * 1610 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1611 * Otherwise, no such extension will be included in the ServerHello. 1612 */ 1613void 1614SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1615 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1616{ 1617 ctx->next_protos_advertised_cb = cb; 1618 ctx->next_protos_advertised_cb_arg = arg; 1619} 1620 1621/* 1622 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1623 * client needs to select a protocol from the server's provided list. |out| 1624 * must be set to point to the selected protocol (which may be within |in|). 1625 * The length of the protocol name must be written into |outlen|. The server's 1626 * advertised protocols are provided in |in| and |inlen|. The callback can 1627 * assume that |in| is syntactically valid. 1628 * 1629 * The client must select a protocol. It is fatal to the connection if this 1630 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1631 */ 1632void 1633SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1634 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1635 unsigned int inlen, void *arg), void *arg) 1636{ 1637 ctx->next_proto_select_cb = cb; 1638 ctx->next_proto_select_cb_arg = arg; 1639} 1640# endif 1641 1642int 1643SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1644 const char *label, size_t llen, const unsigned char *p, size_t plen, 1645 int use_context) 1646{ 1647 if (s->version < TLS1_VERSION) 1648 return (-1); 1649 1650 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1651 label, llen, p, plen, use_context)); 1652} 1653 1654static unsigned long 1655ssl_session_hash(const SSL_SESSION *a) 1656{ 1657 unsigned long l; 1658 1659 l = (unsigned long) 1660 ((unsigned int) a->session_id[0] )| 1661 ((unsigned int) a->session_id[1]<< 8L)| 1662 ((unsigned long)a->session_id[2]<<16L)| 1663 ((unsigned long)a->session_id[3]<<24L); 1664 return (l); 1665} 1666 1667/* 1668 * NB: If this function (or indeed the hash function which uses a sort of 1669 * coarser function than this one) is changed, ensure 1670 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1671 * able to construct an SSL_SESSION that will collide with any existing session 1672 * with a matching session ID. 1673 */ 1674static int 1675ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1676{ 1677 if (a->ssl_version != b->ssl_version) 1678 return (1); 1679 if (a->session_id_length != b->session_id_length) 1680 return (1); 1681 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1682 return (1); 1683 return (0); 1684} 1685 1686/* 1687 * These wrapper functions should remain rather than redeclaring 1688 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1689 * variable. The reason is that the functions aren't static, they're exposed via 1690 * ssl.h. 1691 */ 1692static 1693IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1694static 1695IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1696 1697SSL_CTX * 1698SSL_CTX_new(const SSL_METHOD *meth) 1699{ 1700 SSL_CTX *ret = NULL; 1701 1702 if (meth == NULL) { 1703 SSLerr(SSL_F_SSL_CTX_NEW, 1704 SSL_R_NULL_SSL_METHOD_PASSED); 1705 return (NULL); 1706 } 1707 1708 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1709 SSLerr(SSL_F_SSL_CTX_NEW, 1710 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1711 goto err; 1712 } 1713 ret = calloc(1, sizeof(SSL_CTX)); 1714 if (ret == NULL) 1715 goto err; 1716 1717 ret->method = meth; 1718 1719 ret->cert_store = NULL; 1720 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1721 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1722 ret->session_cache_head = NULL; 1723 ret->session_cache_tail = NULL; 1724 1725 /* We take the system default */ 1726 ret->session_timeout = meth->get_timeout(); 1727 1728 ret->new_session_cb = 0; 1729 ret->remove_session_cb = 0; 1730 ret->get_session_cb = 0; 1731 ret->generate_session_id = 0; 1732 1733 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1734 1735 ret->references = 1; 1736 ret->quiet_shutdown = 0; 1737 1738 ret->info_callback = NULL; 1739 1740 ret->app_verify_callback = 0; 1741 ret->app_verify_arg = NULL; 1742 1743 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1744 ret->read_ahead = 0; 1745 ret->msg_callback = 0; 1746 ret->msg_callback_arg = NULL; 1747 ret->verify_mode = SSL_VERIFY_NONE; 1748 ret->sid_ctx_length = 0; 1749 ret->default_verify_callback = NULL; 1750 if ((ret->cert = ssl_cert_new()) == NULL) 1751 goto err; 1752 1753 ret->default_passwd_callback = 0; 1754 ret->default_passwd_callback_userdata = NULL; 1755 ret->client_cert_cb = 0; 1756 ret->app_gen_cookie_cb = 0; 1757 ret->app_verify_cookie_cb = 0; 1758 1759 ret->sessions = lh_SSL_SESSION_new(); 1760 if (ret->sessions == NULL) 1761 goto err; 1762 ret->cert_store = X509_STORE_new(); 1763 if (ret->cert_store == NULL) 1764 goto err; 1765 1766 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1767 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1768 if (ret->cipher_list == NULL || 1769 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1770 SSLerr(SSL_F_SSL_CTX_NEW, 1771 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1772 goto err2; 1773 } 1774 1775 ret->param = X509_VERIFY_PARAM_new(); 1776 if (!ret->param) 1777 goto err; 1778 1779 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1780 SSLerr(SSL_F_SSL_CTX_NEW, 1781 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1782 goto err2; 1783 } 1784 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1785 SSLerr(SSL_F_SSL_CTX_NEW, 1786 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1787 goto err2; 1788 } 1789 1790 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1791 goto err; 1792 1793 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1794 1795 ret->extra_certs = NULL; 1796 /* No compression for DTLS */ 1797 if (meth->version != DTLS1_VERSION) 1798 ret->comp_methods = SSL_COMP_get_compression_methods(); 1799 1800 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1801 1802 ret->tlsext_servername_callback = 0; 1803 ret->tlsext_servername_arg = NULL; 1804 /* Setup RFC4507 ticket keys */ 1805 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1806 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1807 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1808 ret->options |= SSL_OP_NO_TICKET; 1809 1810 ret->tlsext_status_cb = 0; 1811 ret->tlsext_status_arg = NULL; 1812 1813# ifndef OPENSSL_NO_NEXTPROTONEG 1814 ret->next_protos_advertised_cb = 0; 1815 ret->next_proto_select_cb = 0; 1816# endif 1817#ifndef OPENSSL_NO_PSK 1818 ret->psk_identity_hint = NULL; 1819 ret->psk_client_callback = NULL; 1820 ret->psk_server_callback = NULL; 1821#endif 1822#ifndef OPENSSL_NO_ENGINE 1823 ret->client_cert_engine = NULL; 1824#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1825#define eng_strx(x) #x 1826#define eng_str(x) eng_strx(x) 1827 /* Use specific client engine automatically... ignore errors */ 1828 { 1829 ENGINE *eng; 1830 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1831 if (!eng) { 1832 ERR_clear_error(); 1833 ENGINE_load_builtin_engines(); 1834 eng = ENGINE_by_id(eng_str( 1835 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1836 } 1837 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1838 ERR_clear_error(); 1839 } 1840#endif 1841#endif 1842 /* 1843 * Default is to connect to non-RI servers. When RI is more widely 1844 * deployed might change this. 1845 */ 1846 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1847 1848 return (ret); 1849err: 1850 SSLerr(SSL_F_SSL_CTX_NEW, 1851 ERR_R_MALLOC_FAILURE); 1852err2: 1853 if (ret != NULL) 1854 SSL_CTX_free(ret); 1855 return (NULL); 1856} 1857 1858void 1859SSL_CTX_free(SSL_CTX *a) 1860{ 1861 int i; 1862 1863 if (a == NULL) 1864 return; 1865 1866 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1867 if (i > 0) 1868 return; 1869 1870 if (a->param) 1871 X509_VERIFY_PARAM_free(a->param); 1872 1873 /* 1874 * Free internal session cache. However: the remove_cb() may reference 1875 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1876 * after the sessions were flushed. 1877 * As the ex_data handling routines might also touch the session cache, 1878 * the most secure solution seems to be: empty (flush) the cache, then 1879 * free ex_data, then finally free the cache. 1880 * (See ticket [openssl.org #212].) 1881 */ 1882 if (a->sessions != NULL) 1883 SSL_CTX_flush_sessions(a, 0); 1884 1885 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1886 1887 if (a->sessions != NULL) 1888 lh_SSL_SESSION_free(a->sessions); 1889 1890 if (a->cert_store != NULL) 1891 X509_STORE_free(a->cert_store); 1892 if (a->cipher_list != NULL) 1893 sk_SSL_CIPHER_free(a->cipher_list); 1894 if (a->cipher_list_by_id != NULL) 1895 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1896 if (a->cert != NULL) 1897 ssl_cert_free(a->cert); 1898 if (a->client_CA != NULL) 1899 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1900 if (a->extra_certs != NULL) 1901 sk_X509_pop_free(a->extra_certs, X509_free); 1902 /* Don't free, since it removes a global database */ 1903 a->comp_methods = NULL; 1904 1905#ifndef OPENSSL_NO_SRTP 1906 if (a->srtp_profiles) 1907 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1908#endif 1909 1910#ifndef OPENSSL_NO_PSK 1911 free(a->psk_identity_hint); 1912#endif 1913#ifndef OPENSSL_NO_ENGINE 1914 if (a->client_cert_engine) 1915 ENGINE_finish(a->client_cert_engine); 1916#endif 1917 1918 free(a); 1919} 1920 1921void 1922SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1923{ 1924 ctx->default_passwd_callback = cb; 1925} 1926 1927void 1928SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1929{ 1930 ctx->default_passwd_callback_userdata = u; 1931} 1932 1933void 1934SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1935 void *), void *arg) 1936{ 1937 ctx->app_verify_callback = cb; 1938 ctx->app_verify_arg = arg; 1939} 1940 1941void 1942SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1943{ 1944 ctx->verify_mode = mode; 1945 ctx->default_verify_callback = cb; 1946} 1947 1948void 1949SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1950{ 1951 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1952} 1953 1954void 1955ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1956{ 1957 CERT_PKEY *cpk; 1958 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 1959 unsigned long mask_k, mask_a; 1960 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1961 int have_ecdh_tmp; 1962 X509 *x = NULL; 1963 EVP_PKEY *ecc_pkey = NULL; 1964 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1965 1966 if (c == NULL) 1967 return; 1968 1969 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1970 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1971 1972 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1973 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1974 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1975 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1976 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1977 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1978 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1979 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 1980 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1981 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 1982/* FIX THIS EAY EAY EAY */ 1983 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1984 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1985 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1986 mask_k = 0; 1987 mask_a = 0; 1988 1989 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1990 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1991 mask_k |= SSL_kGOST; 1992 mask_a |= SSL_aGOST01; 1993 } 1994 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1995 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1996 mask_k |= SSL_kGOST; 1997 mask_a |= SSL_aGOST94; 1998 } 1999 2000 if (rsa_enc || (rsa_tmp && rsa_sign)) 2001 mask_k|=SSL_kRSA; 2002 2003 if (dh_tmp) 2004 mask_k|=SSL_kEDH; 2005 2006 if (dh_rsa) 2007 mask_k|=SSL_kDHr; 2008 2009 if (dh_dsa) 2010 mask_k|=SSL_kDHd; 2011 2012 if (rsa_enc || rsa_sign) 2013 mask_a|=SSL_aRSA; 2014 2015 if (dsa_sign) 2016 mask_a|=SSL_aDSS; 2017 2018 mask_a|=SSL_aNULL; 2019 2020 /* 2021 * An ECC certificate may be usable for ECDH and/or 2022 * ECDSA cipher suites depending on the key usage extension. 2023 */ 2024 if (have_ecc_cert) { 2025 /* This call populates extension flags (ex_flags) */ 2026 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2027 X509_check_purpose(x, -1, 0); 2028 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2029 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2030 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2031 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2032 ecc_pkey = X509_get_pubkey(x); 2033 ecc_pkey_size = (ecc_pkey != NULL) ? 2034 EVP_PKEY_bits(ecc_pkey) : 0; 2035 EVP_PKEY_free(ecc_pkey); 2036 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2037 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2038 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2039 } 2040 if (ecdh_ok) { 2041 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2042 mask_k|=SSL_kECDHr; 2043 mask_a|=SSL_aECDH; 2044 } 2045 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2046 mask_k|=SSL_kECDHe; 2047 mask_a|=SSL_aECDH; 2048 } 2049 } 2050 if (ecdsa_ok) 2051 mask_a|=SSL_aECDSA; 2052 } 2053 2054 if (have_ecdh_tmp) { 2055 mask_k|=SSL_kEECDH; 2056 } 2057 2058#ifndef OPENSSL_NO_PSK 2059 mask_k |= SSL_kPSK; 2060 mask_a |= SSL_aPSK; 2061#endif 2062 2063 c->mask_k = mask_k; 2064 c->mask_a = mask_a; 2065 c->valid = 1; 2066} 2067 2068/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2069#define ku_reject(x, usage) \ 2070 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2071 2072 2073int 2074ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2075{ 2076 unsigned long alg_k, alg_a; 2077 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2078 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2079 2080 alg_k = cs->algorithm_mkey; 2081 alg_a = cs->algorithm_auth; 2082 2083 /* This call populates the ex_flags field correctly */ 2084 X509_check_purpose(x, -1, 0); 2085 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2086 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2087 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2088 } 2089 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2090 /* key usage, if present, must allow key agreement */ 2091 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2092 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2093 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2094 return (0); 2095 } 2096 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2097 TLS1_2_VERSION) { 2098 /* signature alg must be ECDSA */ 2099 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2100 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2101 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2102 return (0); 2103 } 2104 } 2105 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2106 TLS1_2_VERSION) { 2107 /* signature alg must be RSA */ 2108 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2109 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2110 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2111 return (0); 2112 } 2113 } 2114 } 2115 if (alg_a & SSL_aECDSA) { 2116 /* key usage, if present, must allow signing */ 2117 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2118 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2119 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2120 return (0); 2121 } 2122 } 2123 2124 return (1); 2125 /* all checks are ok */ 2126} 2127 2128 2129/* THIS NEEDS CLEANING UP */ 2130CERT_PKEY * 2131ssl_get_server_send_pkey(const SSL *s) 2132{ 2133 unsigned long alg_k, alg_a; 2134 CERT *c; 2135 int i; 2136 2137 c = s->cert; 2138 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2139 2140 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2141 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2142 2143 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2144 /* 2145 * We don't need to look at SSL_kEECDH 2146 * since no certificate is needed for 2147 * anon ECDH and for authenticated 2148 * EECDH, the check for the auth 2149 * algorithm will set i correctly 2150 * NOTE: For ECDH-RSA, we need an ECC 2151 * not an RSA cert but for EECDH-RSA 2152 * we need an RSA cert. Placing the 2153 * checks for SSL_kECDH before RSA 2154 * checks ensures the correct cert is chosen. 2155 */ 2156 i = SSL_PKEY_ECC; 2157 } else if (alg_a & SSL_aECDSA) { 2158 i = SSL_PKEY_ECC; 2159 } else if (alg_k & SSL_kDHr) { 2160 i = SSL_PKEY_DH_RSA; 2161 } else if (alg_k & SSL_kDHd) { 2162 i = SSL_PKEY_DH_DSA; 2163 } else if (alg_a & SSL_aDSS) { 2164 i = SSL_PKEY_DSA_SIGN; 2165 } else if (alg_a & SSL_aRSA) { 2166 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2167 i = SSL_PKEY_RSA_SIGN; 2168 else 2169 i = SSL_PKEY_RSA_ENC; 2170 } else if (alg_a & SSL_aKRB5) { 2171 /* VRS something else here? */ 2172 return (NULL); 2173 } else if (alg_a & SSL_aGOST94) { 2174 i = SSL_PKEY_GOST94; 2175 } else if (alg_a & SSL_aGOST01) { 2176 i = SSL_PKEY_GOST01; 2177 } else { /* if (alg_a & SSL_aNULL) */ 2178 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2179 return (NULL); 2180 } 2181 2182 return (c->pkeys + i); 2183} 2184 2185X509 * 2186ssl_get_server_send_cert(const SSL *s) 2187{ 2188 CERT_PKEY *cpk; 2189 2190 cpk = ssl_get_server_send_pkey(s); 2191 if (!cpk) 2192 return (NULL); 2193 return (cpk->x509); 2194} 2195 2196EVP_PKEY * 2197ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2198{ 2199 unsigned long alg_a; 2200 CERT *c; 2201 int idx = -1; 2202 2203 alg_a = cipher->algorithm_auth; 2204 c = s->cert; 2205 2206 if ((alg_a & SSL_aDSS) && 2207 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2208 idx = SSL_PKEY_DSA_SIGN; 2209 else if (alg_a & SSL_aRSA) { 2210 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2211 idx = SSL_PKEY_RSA_SIGN; 2212 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2213 idx = SSL_PKEY_RSA_ENC; 2214 } else if ((alg_a & SSL_aECDSA) && 2215 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2216 idx = SSL_PKEY_ECC; 2217 if (idx == -1) { 2218 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2219 return (NULL); 2220 } 2221 if (pmd) 2222 *pmd = c->pkeys[idx].digest; 2223 return (c->pkeys[idx].privatekey); 2224} 2225 2226void 2227ssl_update_cache(SSL *s, int mode) 2228{ 2229 int i; 2230 2231 /* 2232 * If the session_id_length is 0, we are not supposed to cache it, 2233 * and it would be rather hard to do anyway :-) 2234 */ 2235 if (s->session->session_id_length == 0) 2236 return; 2237 2238 i = s->session_ctx->session_cache_mode; 2239 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2240 || SSL_CTX_add_session(s->session_ctx, s->session)) 2241 && (s->session_ctx->new_session_cb != NULL)) { 2242 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2243 if (!s->session_ctx->new_session_cb(s, s->session)) 2244 SSL_SESSION_free(s->session); 2245 } 2246 2247 /* auto flush every 255 connections */ 2248 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2249 ((i & mode) == mode)) { 2250 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2251 s->session_ctx->stats.sess_connect_good : 2252 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2253 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2254 } 2255 } 2256} 2257 2258const SSL_METHOD * 2259SSL_get_ssl_method(SSL *s) 2260{ 2261 return (s->method); 2262} 2263 2264int 2265SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2266{ 2267 int conn = -1; 2268 int ret = 1; 2269 2270 if (s->method != meth) { 2271 if (s->handshake_func != NULL) 2272 conn = (s->handshake_func == s->method->ssl_connect); 2273 2274 if (s->method->version == meth->version) 2275 s->method = meth; 2276 else { 2277 s->method->ssl_free(s); 2278 s->method = meth; 2279 ret = s->method->ssl_new(s); 2280 } 2281 2282 if (conn == 1) 2283 s->handshake_func = meth->ssl_connect; 2284 else if (conn == 0) 2285 s->handshake_func = meth->ssl_accept; 2286 } 2287 return (ret); 2288} 2289 2290int 2291SSL_get_error(const SSL *s, int i) 2292{ 2293 int reason; 2294 unsigned long l; 2295 BIO *bio; 2296 2297 if (i > 0) 2298 return (SSL_ERROR_NONE); 2299 2300 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2301 * etc, where we do encode the error */ 2302 if ((l = ERR_peek_error()) != 0) { 2303 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2304 return (SSL_ERROR_SYSCALL); 2305 else 2306 return (SSL_ERROR_SSL); 2307 } 2308 2309 if ((i < 0) && SSL_want_read(s)) { 2310 bio = SSL_get_rbio(s); 2311 if (BIO_should_read(bio)) { 2312 return (SSL_ERROR_WANT_READ); 2313 } else if (BIO_should_write(bio)) { 2314 /* 2315 * This one doesn't make too much sense... We never 2316 * try to write to the rbio, and an application 2317 * program where rbio and wbio are separate couldn't 2318 * even know what it should wait for. However if we 2319 * ever set s->rwstate incorrectly (so that we have 2320 * SSL_want_read(s) instead of SSL_want_write(s)) 2321 * and rbio and wbio *are* the same, this test works 2322 * around that bug; so it might be safer to keep it. 2323 */ 2324 return (SSL_ERROR_WANT_WRITE); 2325 } else if (BIO_should_io_special(bio)) { 2326 reason = BIO_get_retry_reason(bio); 2327 if (reason == BIO_RR_CONNECT) 2328 return (SSL_ERROR_WANT_CONNECT); 2329 else if (reason == BIO_RR_ACCEPT) 2330 return (SSL_ERROR_WANT_ACCEPT); 2331 else 2332 return (SSL_ERROR_SYSCALL); /* unknown */ 2333 } 2334 } 2335 2336 if ((i < 0) && SSL_want_write(s)) { 2337 bio = SSL_get_wbio(s); 2338 if (BIO_should_write(bio)) { 2339 return (SSL_ERROR_WANT_WRITE); 2340 } else if (BIO_should_read(bio)) { 2341 /* 2342 * See above (SSL_want_read(s) with 2343 * BIO_should_write(bio)) 2344 */ 2345 return (SSL_ERROR_WANT_READ); 2346 } else if (BIO_should_io_special(bio)) { 2347 reason = BIO_get_retry_reason(bio); 2348 if (reason == BIO_RR_CONNECT) 2349 return (SSL_ERROR_WANT_CONNECT); 2350 else if (reason == BIO_RR_ACCEPT) 2351 return (SSL_ERROR_WANT_ACCEPT); 2352 else 2353 return (SSL_ERROR_SYSCALL); 2354 } 2355 } 2356 if ((i < 0) && SSL_want_x509_lookup(s)) { 2357 return (SSL_ERROR_WANT_X509_LOOKUP); 2358 } 2359 2360 if (i == 0) { 2361 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2362 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2363 return (SSL_ERROR_ZERO_RETURN); 2364 } 2365 return (SSL_ERROR_SYSCALL); 2366} 2367 2368int 2369SSL_do_handshake(SSL *s) 2370{ 2371 int ret = 1; 2372 2373 if (s->handshake_func == NULL) { 2374 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2375 SSL_R_CONNECTION_TYPE_NOT_SET); 2376 return (-1); 2377 } 2378 2379 s->method->ssl_renegotiate_check(s); 2380 2381 if (SSL_in_init(s) || SSL_in_before(s)) { 2382 ret = s->handshake_func(s); 2383 } 2384 return (ret); 2385} 2386 2387/* 2388 * For the next 2 functions, SSL_clear() sets shutdown and so 2389 * one of these calls will reset it 2390 */ 2391void 2392SSL_set_accept_state(SSL *s) 2393{ 2394 s->server = 1; 2395 s->shutdown = 0; 2396 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2397 s->handshake_func = s->method->ssl_accept; 2398 /* clear the current cipher */ 2399 ssl_clear_cipher_ctx(s); 2400 ssl_clear_hash_ctx(&s->read_hash); 2401 ssl_clear_hash_ctx(&s->write_hash); 2402} 2403 2404void 2405SSL_set_connect_state(SSL *s) 2406{ 2407 s->server = 0; 2408 s->shutdown = 0; 2409 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2410 s->handshake_func = s->method->ssl_connect; 2411 /* clear the current cipher */ 2412 ssl_clear_cipher_ctx(s); 2413 ssl_clear_hash_ctx(&s->read_hash); 2414 ssl_clear_hash_ctx(&s->write_hash); 2415} 2416 2417int 2418ssl_undefined_function(SSL *s) 2419{ 2420 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2421 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2422 return (0); 2423} 2424 2425int 2426ssl_undefined_void_function(void) 2427{ 2428 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2429 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2430 return (0); 2431} 2432 2433int 2434ssl_undefined_const_function(const SSL *s) 2435{ 2436 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2437 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2438 return (0); 2439} 2440 2441SSL_METHOD * 2442ssl_bad_method(int ver) 2443{ 2444 SSLerr(SSL_F_SSL_BAD_METHOD, 2445 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2446 return (NULL); 2447} 2448 2449const char * 2450SSL_get_version(const SSL *s) 2451{ 2452 if (s->version == TLS1_2_VERSION) 2453 return ("TLSv1.2"); 2454 else if (s->version == TLS1_1_VERSION) 2455 return ("TLSv1.1"); 2456 else if (s->version == TLS1_VERSION) 2457 return ("TLSv1"); 2458 else if (s->version == SSL3_VERSION) 2459 return ("SSLv3"); 2460 else 2461 return ("unknown"); 2462} 2463 2464SSL * 2465SSL_dup(SSL *s) 2466{ 2467 STACK_OF(X509_NAME) *sk; 2468 X509_NAME *xn; 2469 SSL *ret; 2470 int i; 2471 2472 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2473 return (NULL); 2474 2475 ret->version = s->version; 2476 ret->type = s->type; 2477 ret->method = s->method; 2478 2479 if (s->session != NULL) { 2480 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2481 SSL_copy_session_id(ret, s); 2482 } else { 2483 /* 2484 * No session has been established yet, so we have to expect 2485 * that s->cert or ret->cert will be changed later -- 2486 * they should not both point to the same object, 2487 * and thus we can't use SSL_copy_session_id. 2488 */ 2489 2490 ret->method->ssl_free(ret); 2491 ret->method = s->method; 2492 ret->method->ssl_new(ret); 2493 2494 if (s->cert != NULL) { 2495 if (ret->cert != NULL) { 2496 ssl_cert_free(ret->cert); 2497 } 2498 ret->cert = ssl_cert_dup(s->cert); 2499 if (ret->cert == NULL) 2500 goto err; 2501 } 2502 2503 SSL_set_session_id_context(ret, 2504 s->sid_ctx, s->sid_ctx_length); 2505 } 2506 2507 ret->options = s->options; 2508 ret->mode = s->mode; 2509 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2510 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2511 ret->msg_callback = s->msg_callback; 2512 ret->msg_callback_arg = s->msg_callback_arg; 2513 SSL_set_verify(ret, SSL_get_verify_mode(s), 2514 SSL_get_verify_callback(s)); 2515 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2516 ret->generate_session_id = s->generate_session_id; 2517 2518 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2519 2520 ret->debug = s->debug; 2521 2522 /* copy app data, a little dangerous perhaps */ 2523 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2524 &ret->ex_data, &s->ex_data)) 2525 goto err; 2526 2527 /* setup rbio, and wbio */ 2528 if (s->rbio != NULL) { 2529 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2530 goto err; 2531 } 2532 if (s->wbio != NULL) { 2533 if (s->wbio != s->rbio) { 2534 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2535 goto err; 2536 } else 2537 ret->wbio = ret->rbio; 2538 } 2539 ret->rwstate = s->rwstate; 2540 ret->in_handshake = s->in_handshake; 2541 ret->handshake_func = s->handshake_func; 2542 ret->server = s->server; 2543 ret->renegotiate = s->renegotiate; 2544 ret->new_session = s->new_session; 2545 ret->quiet_shutdown = s->quiet_shutdown; 2546 ret->shutdown = s->shutdown; 2547 /* SSL_dup does not really work at any state, though */ 2548 ret->state=s->state; 2549 ret->rstate = s->rstate; 2550 2551 /* 2552 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2553 * ret->init_off 2554 */ 2555 ret->init_num = 0; 2556 2557 ret->hit = s->hit; 2558 2559 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2560 2561 /* dup the cipher_list and cipher_list_by_id stacks */ 2562 if (s->cipher_list != NULL) { 2563 if ((ret->cipher_list = 2564 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2565 goto err; 2566 } 2567 if (s->cipher_list_by_id != NULL) { 2568 if ((ret->cipher_list_by_id = 2569 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2570 goto err; 2571 } 2572 2573 /* Dup the client_CA list */ 2574 if (s->client_CA != NULL) { 2575 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2576 ret->client_CA = sk; 2577 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2578 xn = sk_X509_NAME_value(sk, i); 2579 if (sk_X509_NAME_set(sk, i, 2580 X509_NAME_dup(xn)) == NULL) { 2581 X509_NAME_free(xn); 2582 goto err; 2583 } 2584 } 2585 } 2586 2587 if (0) { 2588err: 2589 if (ret != NULL) 2590 SSL_free(ret); 2591 ret = NULL; 2592 } 2593 return (ret); 2594} 2595 2596void 2597ssl_clear_cipher_ctx(SSL *s) 2598{ 2599 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2600 s->enc_read_ctx = NULL; 2601 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2602 s->enc_write_ctx = NULL; 2603 2604 if (s->aead_read_ctx != NULL) { 2605 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2606 free(s->aead_read_ctx); 2607 s->aead_read_ctx = NULL; 2608 } 2609 if (s->aead_write_ctx != NULL) { 2610 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2611 free(s->aead_write_ctx); 2612 s->aead_write_ctx = NULL; 2613 } 2614 2615#ifndef OPENSSL_NO_COMP 2616 COMP_CTX_free(s->expand); 2617 s->expand = NULL; 2618 COMP_CTX_free(s->compress); 2619 s->compress = NULL; 2620#endif 2621} 2622 2623/* Fix this function so that it takes an optional type parameter */ 2624X509 * 2625SSL_get_certificate(const SSL *s) 2626{ 2627 if (s->cert != NULL) 2628 return (s->cert->key->x509); 2629 else 2630 return (NULL); 2631} 2632 2633/* Fix this function so that it takes an optional type parameter */ 2634EVP_PKEY * 2635SSL_get_privatekey(SSL *s) 2636{ 2637 if (s->cert != NULL) 2638 return (s->cert->key->privatekey); 2639 else 2640 return (NULL); 2641} 2642 2643const SSL_CIPHER * 2644SSL_get_current_cipher(const SSL *s) 2645{ 2646 if ((s->session != NULL) && (s->session->cipher != NULL)) 2647 return (s->session->cipher); 2648 return (NULL); 2649} 2650#ifdef OPENSSL_NO_COMP 2651const void * 2652SSL_get_current_compression(SSL *s) 2653{ 2654 return (NULL); 2655} 2656 2657const void * 2658SSL_get_current_expansion(SSL *s) 2659{ 2660 return (NULL); 2661} 2662#else 2663 2664const COMP_METHOD * 2665SSL_get_current_compression(SSL *s) 2666{ 2667 if (s->compress != NULL) 2668 return (s->compress->meth); 2669 return (NULL); 2670} 2671 2672const COMP_METHOD * 2673SSL_get_current_expansion(SSL *s) 2674{ 2675 if (s->expand != NULL) 2676 return (s->expand->meth); 2677 return (NULL); 2678} 2679#endif 2680 2681int 2682ssl_init_wbio_buffer(SSL *s, int push) 2683{ 2684 BIO *bbio; 2685 2686 if (s->bbio == NULL) { 2687 bbio = BIO_new(BIO_f_buffer()); 2688 if (bbio == NULL) 2689 return (0); 2690 s->bbio = bbio; 2691 } else { 2692 bbio = s->bbio; 2693 if (s->bbio == s->wbio) 2694 s->wbio = BIO_pop(s->wbio); 2695 } 2696 (void)BIO_reset(bbio); 2697/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2698 if (!BIO_set_read_buffer_size(bbio, 1)) { 2699 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2700 ERR_R_BUF_LIB); 2701 return (0); 2702 } 2703 if (push) { 2704 if (s->wbio != bbio) 2705 s->wbio = BIO_push(bbio, s->wbio); 2706 } else { 2707 if (s->wbio == bbio) 2708 s->wbio = BIO_pop(bbio); 2709 } 2710 return (1); 2711} 2712 2713void 2714ssl_free_wbio_buffer(SSL *s) 2715{ 2716 if (s->bbio == NULL) 2717 return; 2718 2719 if (s->bbio == s->wbio) { 2720 /* remove buffering */ 2721 s->wbio = BIO_pop(s->wbio); 2722 } 2723 BIO_free(s->bbio); 2724 s->bbio = NULL; 2725} 2726 2727void 2728SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2729{ 2730 ctx->quiet_shutdown = mode; 2731} 2732 2733int 2734SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2735{ 2736 return (ctx->quiet_shutdown); 2737} 2738 2739void 2740SSL_set_quiet_shutdown(SSL *s, int mode) 2741{ 2742 s->quiet_shutdown = mode; 2743} 2744 2745int 2746SSL_get_quiet_shutdown(const SSL *s) 2747{ 2748 return (s->quiet_shutdown); 2749} 2750 2751void 2752SSL_set_shutdown(SSL *s, int mode) 2753{ 2754 s->shutdown = mode; 2755} 2756 2757int 2758SSL_get_shutdown(const SSL *s) 2759{ 2760 return (s->shutdown); 2761} 2762 2763int 2764SSL_version(const SSL *s) 2765{ 2766 return (s->version); 2767} 2768 2769SSL_CTX * 2770SSL_get_SSL_CTX(const SSL *ssl) 2771{ 2772 return (ssl->ctx); 2773} 2774 2775SSL_CTX * 2776SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2777{ 2778 if (ssl->ctx == ctx) 2779 return (ssl->ctx); 2780 if (ctx == NULL) 2781 ctx = ssl->initial_ctx; 2782 if (ssl->cert != NULL) 2783 ssl_cert_free(ssl->cert); 2784 ssl->cert = ssl_cert_dup(ctx->cert); 2785 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2786 if (ssl->ctx != NULL) 2787 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2788 ssl->ctx = ctx; 2789 return (ssl->ctx); 2790} 2791 2792int 2793SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2794{ 2795 return (X509_STORE_set_default_paths(ctx->cert_store)); 2796} 2797 2798int 2799SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2800 const char *CApath) 2801{ 2802 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2803} 2804 2805void 2806SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2807{ 2808 ssl->info_callback = cb; 2809} 2810 2811void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2812{ 2813 return (ssl->info_callback); 2814} 2815 2816int 2817SSL_state(const SSL *ssl) 2818{ 2819 return (ssl->state); 2820} 2821 2822void 2823SSL_set_state(SSL *ssl, int state) 2824{ 2825 ssl->state = state; 2826} 2827 2828void 2829SSL_set_verify_result(SSL *ssl, long arg) 2830{ 2831 ssl->verify_result = arg; 2832} 2833 2834long 2835SSL_get_verify_result(const SSL *ssl) 2836{ 2837 return (ssl->verify_result); 2838} 2839 2840int 2841SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2842 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2843{ 2844 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2845 new_func, dup_func, free_func)); 2846} 2847 2848int 2849SSL_set_ex_data(SSL *s, int idx, void *arg) 2850{ 2851 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2852} 2853 2854void * 2855SSL_get_ex_data(const SSL *s, int idx) 2856{ 2857 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2858} 2859 2860int 2861SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2862 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2863{ 2864 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2865 new_func, dup_func, free_func)); 2866} 2867 2868int 2869SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2870{ 2871 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2872} 2873 2874void * 2875SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2876{ 2877 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2878} 2879 2880int 2881ssl_ok(SSL *s) 2882{ 2883 return (1); 2884} 2885 2886X509_STORE * 2887SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2888{ 2889 return (ctx->cert_store); 2890} 2891 2892void 2893SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2894{ 2895 if (ctx->cert_store != NULL) 2896 X509_STORE_free(ctx->cert_store); 2897 ctx->cert_store = store; 2898} 2899 2900int 2901SSL_want(const SSL *s) 2902{ 2903 return (s->rwstate); 2904} 2905 2906void 2907SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2908 int keylength)) 2909{ 2910 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2911} 2912 2913void 2914SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2915 int keylength)) 2916{ 2917 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2918} 2919 2920void 2921SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2922 int keylength)) 2923{ 2924 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2925} 2926 2927void 2928SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2929 int keylength)) 2930{ 2931 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2932} 2933 2934void 2935SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2936 int is_export, int keylength)) 2937{ 2938 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2939 (void (*)(void))ecdh); 2940} 2941 2942void 2943SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2944 int keylength)) 2945{ 2946 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2947} 2948 2949#ifndef OPENSSL_NO_PSK 2950int 2951SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 2952{ 2953 if (identity_hint != NULL && strlen(identity_hint) > 2954 PSK_MAX_IDENTITY_LEN) { 2955 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 2956 SSL_R_DATA_LENGTH_TOO_LONG); 2957 return (0); 2958 } 2959 free(ctx->psk_identity_hint); 2960 if (identity_hint != NULL) { 2961 ctx->psk_identity_hint = BUF_strdup(identity_hint); 2962 if (ctx->psk_identity_hint == NULL) 2963 return (0); 2964 } else 2965 ctx->psk_identity_hint = NULL; 2966 return (1); 2967} 2968 2969int 2970SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 2971{ 2972 if (s == NULL) 2973 return (0); 2974 2975 if (s->session == NULL) 2976 return (1); /* session not created yet, ignored */ 2977 2978 if (identity_hint != NULL && 2979 strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 2980 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 2981 SSL_R_DATA_LENGTH_TOO_LONG); 2982 return (0); 2983 } 2984 free(s->session->psk_identity_hint); 2985 if (identity_hint != NULL) { 2986 s->session->psk_identity_hint = BUF_strdup(identity_hint); 2987 if (s->session->psk_identity_hint == NULL) 2988 return (0); 2989 } else 2990 s->session->psk_identity_hint = NULL; 2991 return (1); 2992} 2993 2994const char * 2995SSL_get_psk_identity_hint(const SSL *s) 2996{ 2997 if (s == NULL || s->session == NULL) 2998 return (NULL); 2999 return (s->session->psk_identity_hint); 3000} 3001 3002const char * 3003SSL_get_psk_identity(const SSL *s) 3004{ 3005 if (s == NULL || s->session == NULL) 3006 return (NULL); 3007 return (s->session->psk_identity); 3008} 3009 3010void 3011SSL_set_psk_client_callback(SSL *s, unsigned int (*cb)(SSL *ssl, 3012 const char *hint, char *identity, unsigned int max_identity_len, 3013 unsigned char *psk, unsigned int max_psk_len)) 3014{ 3015 s->psk_client_callback = cb; 3016} 3017 3018void 3019SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, 3020 const char *hint, char *identity, unsigned int max_identity_len, 3021 unsigned char *psk, unsigned int max_psk_len)) 3022{ 3023 ctx->psk_client_callback = cb; 3024} 3025 3026void 3027SSL_set_psk_server_callback(SSL *s, unsigned int (*cb)(SSL *ssl, 3028 const char *identity, unsigned char *psk, unsigned int max_psk_len)) 3029{ 3030 s->psk_server_callback = cb; 3031} 3032 3033void 3034SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, 3035 const char *identity, unsigned char *psk, unsigned int max_psk_len)) 3036{ 3037 ctx->psk_server_callback = cb; 3038} 3039#endif 3040 3041void 3042SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3043 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3044{ 3045 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3046 (void (*)(void))cb); 3047} 3048 3049void 3050SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3051 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3052{ 3053 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3054} 3055 3056/* 3057 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3058 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3059 * any. If EVP_MD pointer is passed, initializes ctx with this md 3060 * Returns newly allocated ctx; 3061 */ 3062EVP_MD_CTX * 3063ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3064{ 3065 ssl_clear_hash_ctx(hash); 3066 *hash = EVP_MD_CTX_create(); 3067 if (*hash != NULL && md != NULL) 3068 EVP_DigestInit_ex(*hash, md, NULL); 3069 return (*hash); 3070} 3071 3072void 3073ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3074{ 3075 if (*hash) 3076 EVP_MD_CTX_destroy(*hash); 3077 *hash = NULL; 3078} 3079 3080void 3081SSL_set_debug(SSL *s, int debug) 3082{ 3083 s->debug = debug; 3084} 3085 3086int 3087SSL_cache_hit(SSL *s) 3088{ 3089 return (s->hit); 3090} 3091 3092IMPLEMENT_STACK_OF(SSL_CIPHER) 3093IMPLEMENT_STACK_OF(SSL_COMP) 3094IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3095 ssl_cipher_id); 3096