ssl_lib.c revision 1.68
1/* $OpenBSD: ssl_lib.c,v 1.68 2014/06/17 01:41:01 tedu 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 (CRYPTO_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 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 1960 int rsa_tmp_export, dh_tmp_export, kl; 1961 unsigned long mask_k, mask_a, emask_k, emask_a; 1962 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1963 int have_ecdh_tmp; 1964 X509 *x = NULL; 1965 EVP_PKEY *ecc_pkey = NULL; 1966 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1967 1968 if (c == NULL) 1969 return; 1970 1971 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 1972 1973 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1974 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 1975 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1976 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1977 dh_tmp_export = (c->dh_tmp_cb != NULL || 1978 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1979 1980 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1981 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1982 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1983 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1984 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1985 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1986 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1987 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1988 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 1989 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1990 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1991 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 1992/* FIX THIS EAY EAY EAY */ 1993 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1994 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1995 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1996 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1997 mask_k = 0; 1998 mask_a = 0; 1999 emask_k = 0; 2000 emask_a = 0; 2001 2002 2003 2004 2005 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2006 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2007 mask_k |= SSL_kGOST; 2008 mask_a |= SSL_aGOST01; 2009 } 2010 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2011 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2012 mask_k |= SSL_kGOST; 2013 mask_a |= SSL_aGOST94; 2014 } 2015 2016 if (rsa_enc || (rsa_tmp && rsa_sign)) 2017 mask_k|=SSL_kRSA; 2018 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2019 emask_k|=SSL_kRSA; 2020 2021 if (dh_tmp_export) 2022 emask_k|=SSL_kEDH; 2023 2024 if (dh_tmp) 2025 mask_k|=SSL_kEDH; 2026 2027 if (dh_rsa) 2028 mask_k|=SSL_kDHr; 2029 if (dh_rsa_export) 2030 emask_k|=SSL_kDHr; 2031 2032 if (dh_dsa) 2033 mask_k|=SSL_kDHd; 2034 if (dh_dsa_export) 2035 emask_k|=SSL_kDHd; 2036 2037 if (rsa_enc || rsa_sign) { 2038 mask_a|=SSL_aRSA; 2039 emask_a|=SSL_aRSA; 2040 } 2041 2042 if (dsa_sign) { 2043 mask_a|=SSL_aDSS; 2044 emask_a|=SSL_aDSS; 2045 } 2046 2047 mask_a|=SSL_aNULL; 2048 emask_a|=SSL_aNULL; 2049 2050 2051 /* 2052 * An ECC certificate may be usable for ECDH and/or 2053 * ECDSA cipher suites depending on the key usage extension. 2054 */ 2055 if (have_ecc_cert) { 2056 /* This call populates extension flags (ex_flags) */ 2057 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2058 X509_check_purpose(x, -1, 0); 2059 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2060 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2061 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2062 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2063 ecc_pkey = X509_get_pubkey(x); 2064 ecc_pkey_size = (ecc_pkey != NULL) ? 2065 EVP_PKEY_bits(ecc_pkey) : 0; 2066 EVP_PKEY_free(ecc_pkey); 2067 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2068 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2069 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2070 } 2071 if (ecdh_ok) { 2072 2073 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2074 mask_k|=SSL_kECDHr; 2075 mask_a|=SSL_aECDH; 2076 if (ecc_pkey_size <= 163) { 2077 emask_k|=SSL_kECDHr; 2078 emask_a|=SSL_aECDH; 2079 } 2080 } 2081 2082 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2083 mask_k|=SSL_kECDHe; 2084 mask_a|=SSL_aECDH; 2085 if (ecc_pkey_size <= 163) { 2086 emask_k|=SSL_kECDHe; 2087 emask_a|=SSL_aECDH; 2088 } 2089 } 2090 } 2091 if (ecdsa_ok) { 2092 mask_a|=SSL_aECDSA; 2093 emask_a|=SSL_aECDSA; 2094 } 2095 } 2096 2097 if (have_ecdh_tmp) { 2098 mask_k|=SSL_kEECDH; 2099 emask_k|=SSL_kEECDH; 2100 } 2101 2102#ifndef OPENSSL_NO_PSK 2103 mask_k |= SSL_kPSK; 2104 mask_a |= SSL_aPSK; 2105 emask_k |= SSL_kPSK; 2106 emask_a |= SSL_aPSK; 2107#endif 2108 2109 c->mask_k = mask_k; 2110 c->mask_a = mask_a; 2111 c->export_mask_k = emask_k; 2112 c->export_mask_a = emask_a; 2113 c->valid = 1; 2114} 2115 2116/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2117#define ku_reject(x, usage) \ 2118 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2119 2120 2121int 2122ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2123{ 2124 unsigned long alg_k, alg_a; 2125 EVP_PKEY *pkey = NULL; 2126 int keysize = 0; 2127 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2128 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2129 2130 alg_k = cs->algorithm_mkey; 2131 alg_a = cs->algorithm_auth; 2132 2133 if (SSL_C_IS_EXPORT(cs)) { 2134 /* ECDH key length in export ciphers must be <= 163 bits */ 2135 pkey = X509_get_pubkey(x); 2136 if (pkey == NULL) 2137 return (0); 2138 keysize = EVP_PKEY_bits(pkey); 2139 EVP_PKEY_free(pkey); 2140 if (keysize > 163) 2141 return (0); 2142 } 2143 2144 /* This call populates the ex_flags field correctly */ 2145 X509_check_purpose(x, -1, 0); 2146 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2147 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2148 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2149 } 2150 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2151 /* key usage, if present, must allow key agreement */ 2152 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2153 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2154 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2155 return (0); 2156 } 2157 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2158 TLS1_2_VERSION) { 2159 /* signature alg must be ECDSA */ 2160 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2161 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2162 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2163 return (0); 2164 } 2165 } 2166 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2167 TLS1_2_VERSION) { 2168 /* signature alg must be RSA */ 2169 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2170 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2171 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2172 return (0); 2173 } 2174 } 2175 } 2176 if (alg_a & SSL_aECDSA) { 2177 /* key usage, if present, must allow signing */ 2178 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2179 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2180 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2181 return (0); 2182 } 2183 } 2184 2185 return (1); 2186 /* all checks are ok */ 2187} 2188 2189 2190/* THIS NEEDS CLEANING UP */ 2191CERT_PKEY * 2192ssl_get_server_send_pkey(const SSL *s) 2193{ 2194 unsigned long alg_k, alg_a; 2195 CERT *c; 2196 int i; 2197 2198 c = s->cert; 2199 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2200 2201 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2202 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2203 2204 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2205 /* 2206 * We don't need to look at SSL_kEECDH 2207 * since no certificate is needed for 2208 * anon ECDH and for authenticated 2209 * EECDH, the check for the auth 2210 * algorithm will set i correctly 2211 * NOTE: For ECDH-RSA, we need an ECC 2212 * not an RSA cert but for EECDH-RSA 2213 * we need an RSA cert. Placing the 2214 * checks for SSL_kECDH before RSA 2215 * checks ensures the correct cert is chosen. 2216 */ 2217 i = SSL_PKEY_ECC; 2218 } else if (alg_a & SSL_aECDSA) { 2219 i = SSL_PKEY_ECC; 2220 } else if (alg_k & SSL_kDHr) { 2221 i = SSL_PKEY_DH_RSA; 2222 } else if (alg_k & SSL_kDHd) { 2223 i = SSL_PKEY_DH_DSA; 2224 } else if (alg_a & SSL_aDSS) { 2225 i = SSL_PKEY_DSA_SIGN; 2226 } else if (alg_a & SSL_aRSA) { 2227 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2228 i = SSL_PKEY_RSA_SIGN; 2229 else 2230 i = SSL_PKEY_RSA_ENC; 2231 } else if (alg_a & SSL_aKRB5) { 2232 /* VRS something else here? */ 2233 return (NULL); 2234 } else if (alg_a & SSL_aGOST94) { 2235 i = SSL_PKEY_GOST94; 2236 } else if (alg_a & SSL_aGOST01) { 2237 i = SSL_PKEY_GOST01; 2238 } else { /* if (alg_a & SSL_aNULL) */ 2239 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2240 return (NULL); 2241 } 2242 2243 return (c->pkeys + i); 2244} 2245 2246X509 * 2247ssl_get_server_send_cert(const SSL *s) 2248{ 2249 CERT_PKEY *cpk; 2250 2251 cpk = ssl_get_server_send_pkey(s); 2252 if (!cpk) 2253 return (NULL); 2254 return (cpk->x509); 2255} 2256 2257EVP_PKEY * 2258ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2259{ 2260 unsigned long alg_a; 2261 CERT *c; 2262 int idx = -1; 2263 2264 alg_a = cipher->algorithm_auth; 2265 c = s->cert; 2266 2267 if ((alg_a & SSL_aDSS) && 2268 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2269 idx = SSL_PKEY_DSA_SIGN; 2270 else if (alg_a & SSL_aRSA) { 2271 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2272 idx = SSL_PKEY_RSA_SIGN; 2273 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2274 idx = SSL_PKEY_RSA_ENC; 2275 } else if ((alg_a & SSL_aECDSA) && 2276 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2277 idx = SSL_PKEY_ECC; 2278 if (idx == -1) { 2279 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2280 return (NULL); 2281 } 2282 if (pmd) 2283 *pmd = c->pkeys[idx].digest; 2284 return (c->pkeys[idx].privatekey); 2285} 2286 2287void 2288ssl_update_cache(SSL *s, int mode) 2289{ 2290 int i; 2291 2292 /* 2293 * If the session_id_length is 0, we are not supposed to cache it, 2294 * and it would be rather hard to do anyway :-) 2295 */ 2296 if (s->session->session_id_length == 0) 2297 return; 2298 2299 i = s->session_ctx->session_cache_mode; 2300 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2301 || SSL_CTX_add_session(s->session_ctx, s->session)) 2302 && (s->session_ctx->new_session_cb != NULL)) { 2303 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2304 if (!s->session_ctx->new_session_cb(s, s->session)) 2305 SSL_SESSION_free(s->session); 2306 } 2307 2308 /* auto flush every 255 connections */ 2309 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2310 ((i & mode) == mode)) { 2311 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2312 s->session_ctx->stats.sess_connect_good : 2313 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2314 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2315 } 2316 } 2317} 2318 2319const SSL_METHOD * 2320SSL_get_ssl_method(SSL *s) 2321{ 2322 return (s->method); 2323} 2324 2325int 2326SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2327{ 2328 int conn = -1; 2329 int ret = 1; 2330 2331 if (s->method != meth) { 2332 if (s->handshake_func != NULL) 2333 conn = (s->handshake_func == s->method->ssl_connect); 2334 2335 if (s->method->version == meth->version) 2336 s->method = meth; 2337 else { 2338 s->method->ssl_free(s); 2339 s->method = meth; 2340 ret = s->method->ssl_new(s); 2341 } 2342 2343 if (conn == 1) 2344 s->handshake_func = meth->ssl_connect; 2345 else if (conn == 0) 2346 s->handshake_func = meth->ssl_accept; 2347 } 2348 return (ret); 2349} 2350 2351int 2352SSL_get_error(const SSL *s, int i) 2353{ 2354 int reason; 2355 unsigned long l; 2356 BIO *bio; 2357 2358 if (i > 0) 2359 return (SSL_ERROR_NONE); 2360 2361 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2362 * etc, where we do encode the error */ 2363 if ((l = ERR_peek_error()) != 0) { 2364 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2365 return (SSL_ERROR_SYSCALL); 2366 else 2367 return (SSL_ERROR_SSL); 2368 } 2369 2370 if ((i < 0) && SSL_want_read(s)) { 2371 bio = SSL_get_rbio(s); 2372 if (BIO_should_read(bio)) { 2373 return (SSL_ERROR_WANT_READ); 2374 } else if (BIO_should_write(bio)) { 2375 /* 2376 * This one doesn't make too much sense... We never 2377 * try to write to the rbio, and an application 2378 * program where rbio and wbio are separate couldn't 2379 * even know what it should wait for. However if we 2380 * ever set s->rwstate incorrectly (so that we have 2381 * SSL_want_read(s) instead of SSL_want_write(s)) 2382 * and rbio and wbio *are* the same, this test works 2383 * around that bug; so it might be safer to keep it. 2384 */ 2385 return (SSL_ERROR_WANT_WRITE); 2386 } else if (BIO_should_io_special(bio)) { 2387 reason = BIO_get_retry_reason(bio); 2388 if (reason == BIO_RR_CONNECT) 2389 return (SSL_ERROR_WANT_CONNECT); 2390 else if (reason == BIO_RR_ACCEPT) 2391 return (SSL_ERROR_WANT_ACCEPT); 2392 else 2393 return (SSL_ERROR_SYSCALL); /* unknown */ 2394 } 2395 } 2396 2397 if ((i < 0) && SSL_want_write(s)) { 2398 bio = SSL_get_wbio(s); 2399 if (BIO_should_write(bio)) { 2400 return (SSL_ERROR_WANT_WRITE); 2401 } else if (BIO_should_read(bio)) { 2402 /* 2403 * See above (SSL_want_read(s) with 2404 * BIO_should_write(bio)) 2405 */ 2406 return (SSL_ERROR_WANT_READ); 2407 } else if (BIO_should_io_special(bio)) { 2408 reason = BIO_get_retry_reason(bio); 2409 if (reason == BIO_RR_CONNECT) 2410 return (SSL_ERROR_WANT_CONNECT); 2411 else if (reason == BIO_RR_ACCEPT) 2412 return (SSL_ERROR_WANT_ACCEPT); 2413 else 2414 return (SSL_ERROR_SYSCALL); 2415 } 2416 } 2417 if ((i < 0) && SSL_want_x509_lookup(s)) { 2418 return (SSL_ERROR_WANT_X509_LOOKUP); 2419 } 2420 2421 if (i == 0) { 2422 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2423 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2424 return (SSL_ERROR_ZERO_RETURN); 2425 } 2426 return (SSL_ERROR_SYSCALL); 2427} 2428 2429int 2430SSL_do_handshake(SSL *s) 2431{ 2432 int ret = 1; 2433 2434 if (s->handshake_func == NULL) { 2435 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2436 SSL_R_CONNECTION_TYPE_NOT_SET); 2437 return (-1); 2438 } 2439 2440 s->method->ssl_renegotiate_check(s); 2441 2442 if (SSL_in_init(s) || SSL_in_before(s)) { 2443 ret = s->handshake_func(s); 2444 } 2445 return (ret); 2446} 2447 2448/* 2449 * For the next 2 functions, SSL_clear() sets shutdown and so 2450 * one of these calls will reset it 2451 */ 2452void 2453SSL_set_accept_state(SSL *s) 2454{ 2455 s->server = 1; 2456 s->shutdown = 0; 2457 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2458 s->handshake_func = s->method->ssl_accept; 2459 /* clear the current cipher */ 2460 ssl_clear_cipher_ctx(s); 2461 ssl_clear_hash_ctx(&s->read_hash); 2462 ssl_clear_hash_ctx(&s->write_hash); 2463} 2464 2465void 2466SSL_set_connect_state(SSL *s) 2467{ 2468 s->server = 0; 2469 s->shutdown = 0; 2470 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2471 s->handshake_func = s->method->ssl_connect; 2472 /* clear the current cipher */ 2473 ssl_clear_cipher_ctx(s); 2474 ssl_clear_hash_ctx(&s->read_hash); 2475 ssl_clear_hash_ctx(&s->write_hash); 2476} 2477 2478int 2479ssl_undefined_function(SSL *s) 2480{ 2481 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2482 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2483 return (0); 2484} 2485 2486int 2487ssl_undefined_void_function(void) 2488{ 2489 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2490 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2491 return (0); 2492} 2493 2494int 2495ssl_undefined_const_function(const SSL *s) 2496{ 2497 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2498 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2499 return (0); 2500} 2501 2502SSL_METHOD * 2503ssl_bad_method(int ver) 2504{ 2505 SSLerr(SSL_F_SSL_BAD_METHOD, 2506 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2507 return (NULL); 2508} 2509 2510const char * 2511SSL_get_version(const SSL *s) 2512{ 2513 if (s->version == TLS1_2_VERSION) 2514 return ("TLSv1.2"); 2515 else if (s->version == TLS1_1_VERSION) 2516 return ("TLSv1.1"); 2517 else if (s->version == TLS1_VERSION) 2518 return ("TLSv1"); 2519 else if (s->version == SSL3_VERSION) 2520 return ("SSLv3"); 2521 else 2522 return ("unknown"); 2523} 2524 2525SSL * 2526SSL_dup(SSL *s) 2527{ 2528 STACK_OF(X509_NAME) *sk; 2529 X509_NAME *xn; 2530 SSL *ret; 2531 int i; 2532 2533 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2534 return (NULL); 2535 2536 ret->version = s->version; 2537 ret->type = s->type; 2538 ret->method = s->method; 2539 2540 if (s->session != NULL) { 2541 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2542 SSL_copy_session_id(ret, s); 2543 } else { 2544 /* 2545 * No session has been established yet, so we have to expect 2546 * that s->cert or ret->cert will be changed later -- 2547 * they should not both point to the same object, 2548 * and thus we can't use SSL_copy_session_id. 2549 */ 2550 2551 ret->method->ssl_free(ret); 2552 ret->method = s->method; 2553 ret->method->ssl_new(ret); 2554 2555 if (s->cert != NULL) { 2556 if (ret->cert != NULL) { 2557 ssl_cert_free(ret->cert); 2558 } 2559 ret->cert = ssl_cert_dup(s->cert); 2560 if (ret->cert == NULL) 2561 goto err; 2562 } 2563 2564 SSL_set_session_id_context(ret, 2565 s->sid_ctx, s->sid_ctx_length); 2566 } 2567 2568 ret->options = s->options; 2569 ret->mode = s->mode; 2570 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2571 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2572 ret->msg_callback = s->msg_callback; 2573 ret->msg_callback_arg = s->msg_callback_arg; 2574 SSL_set_verify(ret, SSL_get_verify_mode(s), 2575 SSL_get_verify_callback(s)); 2576 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2577 ret->generate_session_id = s->generate_session_id; 2578 2579 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2580 2581 ret->debug = s->debug; 2582 2583 /* copy app data, a little dangerous perhaps */ 2584 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2585 &ret->ex_data, &s->ex_data)) 2586 goto err; 2587 2588 /* setup rbio, and wbio */ 2589 if (s->rbio != NULL) { 2590 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2591 goto err; 2592 } 2593 if (s->wbio != NULL) { 2594 if (s->wbio != s->rbio) { 2595 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2596 goto err; 2597 } else 2598 ret->wbio = ret->rbio; 2599 } 2600 ret->rwstate = s->rwstate; 2601 ret->in_handshake = s->in_handshake; 2602 ret->handshake_func = s->handshake_func; 2603 ret->server = s->server; 2604 ret->renegotiate = s->renegotiate; 2605 ret->new_session = s->new_session; 2606 ret->quiet_shutdown = s->quiet_shutdown; 2607 ret->shutdown = s->shutdown; 2608 /* SSL_dup does not really work at any state, though */ 2609 ret->state=s->state; 2610 ret->rstate = s->rstate; 2611 2612 /* 2613 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2614 * ret->init_off 2615 */ 2616 ret->init_num = 0; 2617 2618 ret->hit = s->hit; 2619 2620 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2621 2622 /* dup the cipher_list and cipher_list_by_id stacks */ 2623 if (s->cipher_list != NULL) { 2624 if ((ret->cipher_list = 2625 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2626 goto err; 2627 } 2628 if (s->cipher_list_by_id != NULL) { 2629 if ((ret->cipher_list_by_id = 2630 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2631 goto err; 2632 } 2633 2634 /* Dup the client_CA list */ 2635 if (s->client_CA != NULL) { 2636 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2637 ret->client_CA = sk; 2638 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2639 xn = sk_X509_NAME_value(sk, i); 2640 if (sk_X509_NAME_set(sk, i, 2641 X509_NAME_dup(xn)) == NULL) { 2642 X509_NAME_free(xn); 2643 goto err; 2644 } 2645 } 2646 } 2647 2648 if (0) { 2649err: 2650 if (ret != NULL) 2651 SSL_free(ret); 2652 ret = NULL; 2653 } 2654 return (ret); 2655} 2656 2657void 2658ssl_clear_cipher_ctx(SSL *s) 2659{ 2660 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2661 s->enc_read_ctx = NULL; 2662 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2663 s->enc_write_ctx = NULL; 2664 2665 if (s->aead_read_ctx != NULL) { 2666 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2667 free(s->aead_read_ctx); 2668 s->aead_read_ctx = NULL; 2669 } 2670 if (s->aead_write_ctx != NULL) { 2671 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2672 free(s->aead_write_ctx); 2673 s->aead_write_ctx = NULL; 2674 } 2675 2676#ifndef OPENSSL_NO_COMP 2677 COMP_CTX_free(s->expand); 2678 s->expand = NULL; 2679 COMP_CTX_free(s->compress); 2680 s->compress = NULL; 2681#endif 2682} 2683 2684/* Fix this function so that it takes an optional type parameter */ 2685X509 * 2686SSL_get_certificate(const SSL *s) 2687{ 2688 if (s->cert != NULL) 2689 return (s->cert->key->x509); 2690 else 2691 return (NULL); 2692} 2693 2694/* Fix this function so that it takes an optional type parameter */ 2695EVP_PKEY * 2696SSL_get_privatekey(SSL *s) 2697{ 2698 if (s->cert != NULL) 2699 return (s->cert->key->privatekey); 2700 else 2701 return (NULL); 2702} 2703 2704const SSL_CIPHER * 2705SSL_get_current_cipher(const SSL *s) 2706{ 2707 if ((s->session != NULL) && (s->session->cipher != NULL)) 2708 return (s->session->cipher); 2709 return (NULL); 2710} 2711#ifdef OPENSSL_NO_COMP 2712const void * 2713SSL_get_current_compression(SSL *s) 2714{ 2715 return (NULL); 2716} 2717 2718const void * 2719SSL_get_current_expansion(SSL *s) 2720{ 2721 return (NULL); 2722} 2723#else 2724 2725const COMP_METHOD * 2726SSL_get_current_compression(SSL *s) 2727{ 2728 if (s->compress != NULL) 2729 return (s->compress->meth); 2730 return (NULL); 2731} 2732 2733const COMP_METHOD * 2734SSL_get_current_expansion(SSL *s) 2735{ 2736 if (s->expand != NULL) 2737 return (s->expand->meth); 2738 return (NULL); 2739} 2740#endif 2741 2742int 2743ssl_init_wbio_buffer(SSL *s, int push) 2744{ 2745 BIO *bbio; 2746 2747 if (s->bbio == NULL) { 2748 bbio = BIO_new(BIO_f_buffer()); 2749 if (bbio == NULL) 2750 return (0); 2751 s->bbio = bbio; 2752 } else { 2753 bbio = s->bbio; 2754 if (s->bbio == s->wbio) 2755 s->wbio = BIO_pop(s->wbio); 2756 } 2757 (void)BIO_reset(bbio); 2758/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2759 if (!BIO_set_read_buffer_size(bbio, 1)) { 2760 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2761 ERR_R_BUF_LIB); 2762 return (0); 2763 } 2764 if (push) { 2765 if (s->wbio != bbio) 2766 s->wbio = BIO_push(bbio, s->wbio); 2767 } else { 2768 if (s->wbio == bbio) 2769 s->wbio = BIO_pop(bbio); 2770 } 2771 return (1); 2772} 2773 2774void 2775ssl_free_wbio_buffer(SSL *s) 2776{ 2777 if (s->bbio == NULL) 2778 return; 2779 2780 if (s->bbio == s->wbio) { 2781 /* remove buffering */ 2782 s->wbio = BIO_pop(s->wbio); 2783 } 2784 BIO_free(s->bbio); 2785 s->bbio = NULL; 2786} 2787 2788void 2789SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2790{ 2791 ctx->quiet_shutdown = mode; 2792} 2793 2794int 2795SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2796{ 2797 return (ctx->quiet_shutdown); 2798} 2799 2800void 2801SSL_set_quiet_shutdown(SSL *s, int mode) 2802{ 2803 s->quiet_shutdown = mode; 2804} 2805 2806int 2807SSL_get_quiet_shutdown(const SSL *s) 2808{ 2809 return (s->quiet_shutdown); 2810} 2811 2812void 2813SSL_set_shutdown(SSL *s, int mode) 2814{ 2815 s->shutdown = mode; 2816} 2817 2818int 2819SSL_get_shutdown(const SSL *s) 2820{ 2821 return (s->shutdown); 2822} 2823 2824int 2825SSL_version(const SSL *s) 2826{ 2827 return (s->version); 2828} 2829 2830SSL_CTX * 2831SSL_get_SSL_CTX(const SSL *ssl) 2832{ 2833 return (ssl->ctx); 2834} 2835 2836SSL_CTX * 2837SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2838{ 2839 if (ssl->ctx == ctx) 2840 return (ssl->ctx); 2841 if (ctx == NULL) 2842 ctx = ssl->initial_ctx; 2843 if (ssl->cert != NULL) 2844 ssl_cert_free(ssl->cert); 2845 ssl->cert = ssl_cert_dup(ctx->cert); 2846 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2847 if (ssl->ctx != NULL) 2848 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2849 ssl->ctx = ctx; 2850 return (ssl->ctx); 2851} 2852 2853int 2854SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2855{ 2856 return (X509_STORE_set_default_paths(ctx->cert_store)); 2857} 2858 2859int 2860SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2861 const char *CApath) 2862{ 2863 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2864} 2865 2866void 2867SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2868{ 2869 ssl->info_callback = cb; 2870} 2871 2872void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2873{ 2874 return (ssl->info_callback); 2875} 2876 2877int 2878SSL_state(const SSL *ssl) 2879{ 2880 return (ssl->state); 2881} 2882 2883void 2884SSL_set_state(SSL *ssl, int state) 2885{ 2886 ssl->state = state; 2887} 2888 2889void 2890SSL_set_verify_result(SSL *ssl, long arg) 2891{ 2892 ssl->verify_result = arg; 2893} 2894 2895long 2896SSL_get_verify_result(const SSL *ssl) 2897{ 2898 return (ssl->verify_result); 2899} 2900 2901int 2902SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2903 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2904{ 2905 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2906 new_func, dup_func, free_func)); 2907} 2908 2909int 2910SSL_set_ex_data(SSL *s, int idx, void *arg) 2911{ 2912 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2913} 2914 2915void * 2916SSL_get_ex_data(const SSL *s, int idx) 2917{ 2918 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2919} 2920 2921int 2922SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2923 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2924{ 2925 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2926 new_func, dup_func, free_func)); 2927} 2928 2929int 2930SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2931{ 2932 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2933} 2934 2935void * 2936SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2937{ 2938 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2939} 2940 2941int 2942ssl_ok(SSL *s) 2943{ 2944 return (1); 2945} 2946 2947X509_STORE * 2948SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2949{ 2950 return (ctx->cert_store); 2951} 2952 2953void 2954SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2955{ 2956 if (ctx->cert_store != NULL) 2957 X509_STORE_free(ctx->cert_store); 2958 ctx->cert_store = store; 2959} 2960 2961int 2962SSL_want(const SSL *s) 2963{ 2964 return (s->rwstate); 2965} 2966 2967void 2968SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2969 int keylength)) 2970{ 2971 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2972} 2973 2974void 2975SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2976 int keylength)) 2977{ 2978 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2979} 2980 2981void 2982SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2983 int keylength)) 2984{ 2985 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2986} 2987 2988void 2989SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2990 int keylength)) 2991{ 2992 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2993} 2994 2995void 2996SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2997 int is_export, int keylength)) 2998{ 2999 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3000 (void (*)(void))ecdh); 3001} 3002 3003void 3004SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3005 int keylength)) 3006{ 3007 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3008} 3009 3010#ifndef OPENSSL_NO_PSK 3011int 3012SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3013{ 3014 if (identity_hint != NULL && strlen(identity_hint) > 3015 PSK_MAX_IDENTITY_LEN) { 3016 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3017 SSL_R_DATA_LENGTH_TOO_LONG); 3018 return (0); 3019 } 3020 free(ctx->psk_identity_hint); 3021 if (identity_hint != NULL) { 3022 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3023 if (ctx->psk_identity_hint == NULL) 3024 return (0); 3025 } else 3026 ctx->psk_identity_hint = NULL; 3027 return (1); 3028} 3029 3030int 3031SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3032{ 3033 if (s == NULL) 3034 return (0); 3035 3036 if (s->session == NULL) 3037 return (1); /* session not created yet, ignored */ 3038 3039 if (identity_hint != NULL && 3040 strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3041 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 3042 SSL_R_DATA_LENGTH_TOO_LONG); 3043 return (0); 3044 } 3045 free(s->session->psk_identity_hint); 3046 if (identity_hint != NULL) { 3047 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3048 if (s->session->psk_identity_hint == NULL) 3049 return (0); 3050 } else 3051 s->session->psk_identity_hint = NULL; 3052 return (1); 3053} 3054 3055const char * 3056SSL_get_psk_identity_hint(const SSL *s) 3057{ 3058 if (s == NULL || s->session == NULL) 3059 return (NULL); 3060 return (s->session->psk_identity_hint); 3061} 3062 3063const char * 3064SSL_get_psk_identity(const SSL *s) 3065{ 3066 if (s == NULL || s->session == NULL) 3067 return (NULL); 3068 return (s->session->psk_identity); 3069} 3070 3071void 3072SSL_set_psk_client_callback(SSL *s, unsigned int (*cb)(SSL *ssl, 3073 const char *hint, char *identity, unsigned int max_identity_len, 3074 unsigned char *psk, unsigned int max_psk_len)) 3075{ 3076 s->psk_client_callback = cb; 3077} 3078 3079void 3080SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, 3081 const char *hint, char *identity, unsigned int max_identity_len, 3082 unsigned char *psk, unsigned int max_psk_len)) 3083{ 3084 ctx->psk_client_callback = cb; 3085} 3086 3087void 3088SSL_set_psk_server_callback(SSL *s, unsigned int (*cb)(SSL *ssl, 3089 const char *identity, unsigned char *psk, unsigned int max_psk_len)) 3090{ 3091 s->psk_server_callback = cb; 3092} 3093 3094void 3095SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, unsigned int (*cb)(SSL *ssl, 3096 const char *identity, unsigned char *psk, unsigned int max_psk_len)) 3097{ 3098 ctx->psk_server_callback = cb; 3099} 3100#endif 3101 3102void 3103SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3104 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3105{ 3106 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3107 (void (*)(void))cb); 3108} 3109 3110void 3111SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3112 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3113{ 3114 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3115} 3116 3117/* 3118 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3119 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3120 * any. If EVP_MD pointer is passed, initializes ctx with this md 3121 * Returns newly allocated ctx; 3122 */ 3123EVP_MD_CTX * 3124ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3125{ 3126 ssl_clear_hash_ctx(hash); 3127 *hash = EVP_MD_CTX_create(); 3128 if (*hash != NULL && md != NULL) 3129 EVP_DigestInit_ex(*hash, md, NULL); 3130 return (*hash); 3131} 3132 3133void 3134ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3135{ 3136 if (*hash) 3137 EVP_MD_CTX_destroy(*hash); 3138 *hash = NULL; 3139} 3140 3141void 3142SSL_set_debug(SSL *s, int debug) 3143{ 3144 s->debug = debug; 3145} 3146 3147int 3148SSL_cache_hit(SSL *s) 3149{ 3150 return (s->hit); 3151} 3152 3153IMPLEMENT_STACK_OF(SSL_CIPHER) 3154IMPLEMENT_STACK_OF(SSL_COMP) 3155IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3156 ssl_cipher_id); 3157