ssl_lib.c revision 1.100
1/* $OpenBSD: ssl_lib.c,v 1.100 2015/02/22 15:29:39 jsing Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <stdio.h> 144 145#include "ssl_locl.h" 146 147#include <openssl/bn.h> 148#include <openssl/dh.h> 149#include <openssl/lhash.h> 150#include <openssl/objects.h> 151#include <openssl/ocsp.h> 152#include <openssl/x509v3.h> 153 154#ifndef OPENSSL_NO_ENGINE 155#include <openssl/engine.h> 156#endif 157 158const char *SSL_version_str = OPENSSL_VERSION_TEXT; 159 160SSL3_ENC_METHOD ssl3_undef_enc_method = { 161 /* 162 * Evil casts, but these functions are only called if there's a 163 * library bug. 164 */ 165 .enc = (int (*)(SSL *, int))ssl_undefined_function, 166 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 167 .setup_key_block = ssl_undefined_function, 168 .generate_master_secret = (int (*)(SSL *, unsigned char *, 169 unsigned char *, int))ssl_undefined_function, 170 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 171 .final_finish_mac = (int (*)(SSL *, const char*, int, 172 unsigned char *))ssl_undefined_function, 173 .finish_mac_length = 0, 174 .cert_verify_mac = (int (*)(SSL *, int, 175 unsigned char *))ssl_undefined_function, 176 .client_finished_label = NULL, 177 .client_finished_label_len = 0, 178 .server_finished_label = NULL, 179 .server_finished_label_len = 0, 180 .alert_value = (int (*)(int))ssl_undefined_function, 181 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 182 const char *, size_t, const unsigned char *, size_t, 183 int use_context))ssl_undefined_function, 184 .enc_flags = 0, 185}; 186 187int 188SSL_clear(SSL *s) 189{ 190 if (s->method == NULL) { 191 SSLerr(SSL_F_SSL_CLEAR, 192 SSL_R_NO_METHOD_SPECIFIED); 193 return (0); 194 } 195 196 if (ssl_clear_bad_session(s)) { 197 SSL_SESSION_free(s->session); 198 s->session = NULL; 199 } 200 201 s->error = 0; 202 s->hit = 0; 203 s->shutdown = 0; 204 205 if (s->renegotiate) { 206 SSLerr(SSL_F_SSL_CLEAR, 207 ERR_R_INTERNAL_ERROR); 208 return (0); 209 } 210 211 s->type = 0; 212 213 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 s->version = s->method->version; 216 s->client_version = s->version; 217 s->rwstate = SSL_NOTHING; 218 s->rstate = SSL_ST_READ_HEADER; 219 220 if (s->init_buf != NULL) { 221 BUF_MEM_free(s->init_buf); 222 s->init_buf = NULL; 223 } 224 225 ssl_clear_cipher_ctx(s); 226 ssl_clear_hash_ctx(&s->read_hash); 227 ssl_clear_hash_ctx(&s->write_hash); 228 229 s->first_packet = 0; 230 231 /* 232 * Check to see if we were changed into a different method, if 233 * so, revert back if we are not doing session-id reuse. 234 */ 235 if (!s->in_handshake && (s->session == NULL) && 236 (s->method != s->ctx->method)) { 237 s->method->ssl_free(s); 238 s->method = s->ctx->method; 239 if (!s->method->ssl_new(s)) 240 return (0); 241 } else 242 s->method->ssl_clear(s); 243 return (1); 244} 245 246/* Used to change an SSL_CTXs default SSL method type */ 247int 248SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 249{ 250 STACK_OF(SSL_CIPHER) *sk; 251 252 ctx->method = meth; 253 254 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 255 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 256 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 257 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 258 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 259 return (0); 260 } 261 return (1); 262} 263 264SSL * 265SSL_new(SSL_CTX *ctx) 266{ 267 SSL *s; 268 269 if (ctx == NULL) { 270 SSLerr(SSL_F_SSL_NEW, 271 SSL_R_NULL_SSL_CTX); 272 return (NULL); 273 } 274 if (ctx->method == NULL) { 275 SSLerr(SSL_F_SSL_NEW, 276 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 277 return (NULL); 278 } 279 280 s = calloc(1, sizeof(SSL)); 281 if (s == NULL) 282 goto err; 283 284 285 s->options = ctx->options; 286 s->mode = ctx->mode; 287 s->max_cert_list = ctx->max_cert_list; 288 289 if (ctx->cert != NULL) { 290 /* 291 * Earlier library versions used to copy the pointer to 292 * the CERT, not its contents; only when setting new 293 * parameters for the per-SSL copy, ssl_cert_new would be 294 * called (and the direct reference to the per-SSL_CTX 295 * settings would be lost, but those still were indirectly 296 * accessed for various purposes, and for that reason they 297 * used to be known as s->ctx->default_cert). 298 * Now we don't look at the SSL_CTX's CERT after having 299 * duplicated it once. 300 */ 301 s->cert = ssl_cert_dup(ctx->cert); 302 if (s->cert == NULL) 303 goto err; 304 } else 305 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 306 307 s->read_ahead = ctx->read_ahead; 308 s->msg_callback = ctx->msg_callback; 309 s->msg_callback_arg = ctx->msg_callback_arg; 310 s->verify_mode = ctx->verify_mode; 311 s->sid_ctx_length = ctx->sid_ctx_length; 312 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 313 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 314 s->verify_callback = ctx->default_verify_callback; 315 s->generate_session_id = ctx->generate_session_id; 316 317 s->param = X509_VERIFY_PARAM_new(); 318 if (!s->param) 319 goto err; 320 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 321 s->quiet_shutdown = ctx->quiet_shutdown; 322 s->max_send_fragment = ctx->max_send_fragment; 323 324 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 325 s->ctx = ctx; 326 s->tlsext_debug_cb = 0; 327 s->tlsext_debug_arg = NULL; 328 s->tlsext_ticket_expected = 0; 329 s->tlsext_status_type = -1; 330 s->tlsext_status_expected = 0; 331 s->tlsext_ocsp_ids = NULL; 332 s->tlsext_ocsp_exts = NULL; 333 s->tlsext_ocsp_resp = NULL; 334 s->tlsext_ocsp_resplen = -1; 335 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 336 s->initial_ctx = ctx; 337 s->next_proto_negotiated = NULL; 338 339 if (s->ctx->alpn_client_proto_list != NULL) { 340 s->alpn_client_proto_list = 341 malloc(s->ctx->alpn_client_proto_list_len); 342 if (s->alpn_client_proto_list == NULL) 343 goto err; 344 memcpy(s->alpn_client_proto_list, 345 s->ctx->alpn_client_proto_list, 346 s->ctx->alpn_client_proto_list_len); 347 s->alpn_client_proto_list_len = 348 s->ctx->alpn_client_proto_list_len; 349 } 350 351 s->verify_result = X509_V_OK; 352 353 s->method = ctx->method; 354 355 if (!s->method->ssl_new(s)) 356 goto err; 357 358 s->references = 1; 359 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 360 361 SSL_clear(s); 362 363 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 364 365 366 return (s); 367err: 368 if (s != NULL) { 369 if (s->cert != NULL) 370 ssl_cert_free(s->cert); 371 SSL_CTX_free(s->ctx); /* decrement reference count */ 372 free(s); 373 } 374 SSLerr(SSL_F_SSL_NEW, 375 ERR_R_MALLOC_FAILURE); 376 return (NULL); 377} 378 379int 380SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 381 unsigned int sid_ctx_len) 382{ 383 if (sid_ctx_len > sizeof ctx->sid_ctx) { 384 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 385 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 386 return (0); 387 } 388 ctx->sid_ctx_length = sid_ctx_len; 389 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 390 391 return (1); 392} 393 394int 395SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 396 unsigned int sid_ctx_len) 397{ 398 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 399 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 400 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 401 return (0); 402 } 403 ssl->sid_ctx_length = sid_ctx_len; 404 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 405 406 return (1); 407} 408 409int 410SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 411{ 412 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 413 ctx->generate_session_id = cb; 414 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 415 return (1); 416} 417 418int 419SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 420{ 421 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 422 ssl->generate_session_id = cb; 423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 424 return (1); 425} 426 427int 428SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 429 unsigned int id_len) 430{ 431 /* 432 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 433 * shows how we can "construct" a session to give us the desired 434 * check - ie. to find if there's a session in the hash table 435 * that would conflict with any new session built out of this 436 * id/id_len and the ssl_version in use by this SSL. 437 */ 438 SSL_SESSION r, *p; 439 440 if (id_len > sizeof r.session_id) 441 return (0); 442 443 r.ssl_version = ssl->version; 444 r.session_id_length = id_len; 445 memcpy(r.session_id, id, id_len); 446 447 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 448 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 449 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 450 return (p != NULL); 451} 452 453int 454SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 455{ 456 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 457} 458 459int 460SSL_set_purpose(SSL *s, int purpose) 461{ 462 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 463} 464 465int 466SSL_CTX_set_trust(SSL_CTX *s, int trust) 467{ 468 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 469} 470 471int 472SSL_set_trust(SSL *s, int trust) 473{ 474 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 475} 476 477int 478SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 479{ 480 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 481} 482 483int 484SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 485{ 486 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 487} 488 489void 490SSL_free(SSL *s) 491{ 492 int i; 493 494 if (s == NULL) 495 return; 496 497 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 498 if (i > 0) 499 return; 500 501 if (s->param) 502 X509_VERIFY_PARAM_free(s->param); 503 504 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 505 506 if (s->bbio != NULL) { 507 /* If the buffering BIO is in place, pop it off */ 508 if (s->bbio == s->wbio) { 509 s->wbio = BIO_pop(s->wbio); 510 } 511 BIO_free(s->bbio); 512 s->bbio = NULL; 513 } 514 if (s->rbio != NULL) 515 BIO_free_all(s->rbio); 516 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 517 BIO_free_all(s->wbio); 518 519 if (s->init_buf != NULL) 520 BUF_MEM_free(s->init_buf); 521 522 /* add extra stuff */ 523 if (s->cipher_list != NULL) 524 sk_SSL_CIPHER_free(s->cipher_list); 525 if (s->cipher_list_by_id != NULL) 526 sk_SSL_CIPHER_free(s->cipher_list_by_id); 527 528 /* Make the next call work :-) */ 529 if (s->session != NULL) { 530 ssl_clear_bad_session(s); 531 SSL_SESSION_free(s->session); 532 } 533 534 ssl_clear_cipher_ctx(s); 535 ssl_clear_hash_ctx(&s->read_hash); 536 ssl_clear_hash_ctx(&s->write_hash); 537 538 if (s->cert != NULL) 539 ssl_cert_free(s->cert); 540 /* Free up if allocated */ 541 542 free(s->tlsext_hostname); 543 SSL_CTX_free(s->initial_ctx); 544 free(s->tlsext_ecpointformatlist); 545 free(s->tlsext_ellipticcurvelist); 546 if (s->tlsext_ocsp_exts) 547 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 548 X509_EXTENSION_free); 549 if (s->tlsext_ocsp_ids) 550 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 551 free(s->tlsext_ocsp_resp); 552 553 if (s->client_CA != NULL) 554 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 555 556 if (s->method != NULL) 557 s->method->ssl_free(s); 558 559 SSL_CTX_free(s->ctx); 560 561 562 free(s->next_proto_negotiated); 563 free(s->alpn_client_proto_list); 564 565#ifndef OPENSSL_NO_SRTP 566 if (s->srtp_profiles) 567 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 568#endif 569 570 free(s); 571} 572 573void 574SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 575{ 576 /* If the output buffering BIO is still in place, remove it */ 577 if (s->bbio != NULL) { 578 if (s->wbio == s->bbio) { 579 s->wbio = s->wbio->next_bio; 580 s->bbio->next_bio = NULL; 581 } 582 } 583 if ((s->rbio != NULL) && (s->rbio != rbio)) 584 BIO_free_all(s->rbio); 585 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 586 BIO_free_all(s->wbio); 587 s->rbio = rbio; 588 s->wbio = wbio; 589} 590 591BIO * 592SSL_get_rbio(const SSL *s) 593{ 594 return (s->rbio); 595} 596 597BIO * 598SSL_get_wbio(const SSL *s) 599{ 600 return (s->wbio); 601} 602 603int 604SSL_get_fd(const SSL *s) 605{ 606 return (SSL_get_rfd(s)); 607} 608 609int 610SSL_get_rfd(const SSL *s) 611{ 612 int ret = -1; 613 BIO *b, *r; 614 615 b = SSL_get_rbio(s); 616 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 617 if (r != NULL) 618 BIO_get_fd(r, &ret); 619 return (ret); 620} 621 622int 623SSL_get_wfd(const SSL *s) 624{ 625 int ret = -1; 626 BIO *b, *r; 627 628 b = SSL_get_wbio(s); 629 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 630 if (r != NULL) 631 BIO_get_fd(r, &ret); 632 return (ret); 633} 634 635int 636SSL_set_fd(SSL *s, int fd) 637{ 638 int ret = 0; 639 BIO *bio = NULL; 640 641 bio = BIO_new(BIO_s_socket()); 642 643 if (bio == NULL) { 644 SSLerr(SSL_F_SSL_SET_FD, 645 ERR_R_BUF_LIB); 646 goto err; 647 } 648 BIO_set_fd(bio, fd, BIO_NOCLOSE); 649 SSL_set_bio(s, bio, bio); 650 ret = 1; 651err: 652 return (ret); 653} 654 655int 656SSL_set_wfd(SSL *s, int fd) 657{ 658 int ret = 0; 659 BIO *bio = NULL; 660 661 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 662 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 663 bio = BIO_new(BIO_s_socket()); 664 665 if (bio == NULL) { 666 SSLerr(SSL_F_SSL_SET_WFD, 667 ERR_R_BUF_LIB); 668 goto err; 669 } 670 BIO_set_fd(bio, fd, BIO_NOCLOSE); 671 SSL_set_bio(s, SSL_get_rbio(s), bio); 672 } else 673 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 674 ret = 1; 675err: 676 return (ret); 677} 678 679int 680SSL_set_rfd(SSL *s, int fd) 681{ 682 int ret = 0; 683 BIO *bio = NULL; 684 685 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 686 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 687 bio = BIO_new(BIO_s_socket()); 688 689 if (bio == NULL) { 690 SSLerr(SSL_F_SSL_SET_RFD, 691 ERR_R_BUF_LIB); 692 goto err; 693 } 694 BIO_set_fd(bio, fd, BIO_NOCLOSE); 695 SSL_set_bio(s, bio, SSL_get_wbio(s)); 696 } else 697 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 698 ret = 1; 699err: 700 return (ret); 701} 702 703 704/* return length of latest Finished message we sent, copy to 'buf' */ 705size_t 706SSL_get_finished(const SSL *s, void *buf, size_t count) 707{ 708 size_t ret = 0; 709 710 if (s->s3 != NULL) { 711 ret = s->s3->tmp.finish_md_len; 712 if (count > ret) 713 count = ret; 714 memcpy(buf, s->s3->tmp.finish_md, count); 715 } 716 return (ret); 717} 718 719/* return length of latest Finished message we expected, copy to 'buf' */ 720size_t 721SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 722{ 723 size_t ret = 0; 724 725 if (s->s3 != NULL) { 726 ret = s->s3->tmp.peer_finish_md_len; 727 if (count > ret) 728 count = ret; 729 memcpy(buf, s->s3->tmp.peer_finish_md, count); 730 } 731 return (ret); 732} 733 734 735int 736SSL_get_verify_mode(const SSL *s) 737{ 738 return (s->verify_mode); 739} 740 741int 742SSL_get_verify_depth(const SSL *s) 743{ 744 return (X509_VERIFY_PARAM_get_depth(s->param)); 745} 746 747int 748(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 749{ 750 return (s->verify_callback); 751} 752 753int 754SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 755{ 756 return (ctx->verify_mode); 757} 758 759int 760SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 761{ 762 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 763} 764 765int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 766{ 767 return (ctx->default_verify_callback); 768} 769 770void 771SSL_set_verify(SSL *s, int mode, 772 int (*callback)(int ok, X509_STORE_CTX *ctx)) 773{ 774 s->verify_mode = mode; 775 if (callback != NULL) 776 s->verify_callback = callback; 777} 778 779void 780SSL_set_verify_depth(SSL *s, int depth) 781{ 782 X509_VERIFY_PARAM_set_depth(s->param, depth); 783} 784 785void 786SSL_set_read_ahead(SSL *s, int yes) 787{ 788 s->read_ahead = yes; 789} 790 791int 792SSL_get_read_ahead(const SSL *s) 793{ 794 return (s->read_ahead); 795} 796 797int 798SSL_pending(const SSL *s) 799{ 800 /* 801 * SSL_pending cannot work properly if read-ahead is enabled 802 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 803 * and it is impossible to fix since SSL_pending cannot report 804 * errors that may be observed while scanning the new data. 805 * (Note that SSL_pending() is often used as a boolean value, 806 * so we'd better not return -1.) 807 */ 808 return (s->method->ssl_pending(s)); 809} 810 811X509 * 812SSL_get_peer_certificate(const SSL *s) 813{ 814 X509 *r; 815 816 if ((s == NULL) || (s->session == NULL)) 817 r = NULL; 818 else 819 r = s->session->peer; 820 821 if (r == NULL) 822 return (r); 823 824 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 825 826 return (r); 827} 828 829STACK_OF(X509) * 830SSL_get_peer_cert_chain(const SSL *s) 831{ 832 STACK_OF(X509) *r; 833 834 if ((s == NULL) || (s->session == NULL) || 835 (s->session->sess_cert == NULL)) 836 r = NULL; 837 else 838 r = s->session->sess_cert->cert_chain; 839 840 /* 841 * If we are a client, cert_chain includes the peer's own 842 * certificate; 843 * if we are a server, it does not. 844 */ 845 return (r); 846} 847 848/* 849 * Now in theory, since the calling process own 't' it should be safe to 850 * modify. We need to be able to read f without being hassled 851 */ 852void 853SSL_copy_session_id(SSL *t, const SSL *f) 854{ 855 CERT *tmp; 856 857 /* Do we need to to SSL locking? */ 858 SSL_set_session(t, SSL_get_session(f)); 859 860 /* 861 * What if we are setup as SSLv2 but want to talk SSLv3 or 862 * vice-versa. 863 */ 864 if (t->method != f->method) { 865 t->method->ssl_free(t); /* cleanup current */ 866 t->method=f->method; /* change method */ 867 t->method->ssl_new(t); /* setup new */ 868 } 869 870 tmp = t->cert; 871 if (f->cert != NULL) { 872 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 873 t->cert = f->cert; 874 } else 875 t->cert = NULL; 876 if (tmp != NULL) 877 ssl_cert_free(tmp); 878 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 879} 880 881/* Fix this so it checks all the valid key/cert options */ 882int 883SSL_CTX_check_private_key(const SSL_CTX *ctx) 884{ 885 if ((ctx == NULL) || (ctx->cert == NULL) || 886 (ctx->cert->key->x509 == NULL)) { 887 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 888 SSL_R_NO_CERTIFICATE_ASSIGNED); 889 return (0); 890 } 891 if (ctx->cert->key->privatekey == NULL) { 892 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 893 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 894 return (0); 895 } 896 return (X509_check_private_key(ctx->cert->key->x509, 897 ctx->cert->key->privatekey)); 898} 899 900/* Fix this function so that it takes an optional type parameter */ 901int 902SSL_check_private_key(const SSL *ssl) 903{ 904 if (ssl == NULL) { 905 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 906 ERR_R_PASSED_NULL_PARAMETER); 907 return (0); 908 } 909 if (ssl->cert == NULL) { 910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 911 SSL_R_NO_CERTIFICATE_ASSIGNED); 912 return (0); 913 } 914 if (ssl->cert->key->x509 == NULL) { 915 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 916 SSL_R_NO_CERTIFICATE_ASSIGNED); 917 return (0); 918 } 919 if (ssl->cert->key->privatekey == NULL) { 920 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 921 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 922 return (0); 923 } 924 return (X509_check_private_key(ssl->cert->key->x509, 925 ssl->cert->key->privatekey)); 926} 927 928int 929SSL_accept(SSL *s) 930{ 931 if (s->handshake_func == 0) 932 SSL_set_accept_state(s); /* Not properly initialized yet */ 933 934 return (s->method->ssl_accept(s)); 935} 936 937int 938SSL_connect(SSL *s) 939{ 940 if (s->handshake_func == 0) 941 SSL_set_connect_state(s); /* Not properly initialized yet */ 942 943 return (s->method->ssl_connect(s)); 944} 945 946long 947SSL_get_default_timeout(const SSL *s) 948{ 949 return (s->method->get_timeout()); 950} 951 952int 953SSL_read(SSL *s, void *buf, int num) 954{ 955 if (s->handshake_func == 0) { 956 SSLerr(SSL_F_SSL_READ, 957 SSL_R_UNINITIALIZED); 958 return (-1); 959 } 960 961 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 962 s->rwstate = SSL_NOTHING; 963 return (0); 964 } 965 return (s->method->ssl_read(s, buf, num)); 966} 967 968int 969SSL_peek(SSL *s, void *buf, int num) 970{ 971 if (s->handshake_func == 0) { 972 SSLerr(SSL_F_SSL_PEEK, 973 SSL_R_UNINITIALIZED); 974 return (-1); 975 } 976 977 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 978 return (0); 979 } 980 return (s->method->ssl_peek(s, buf, num)); 981} 982 983int 984SSL_write(SSL *s, const void *buf, int num) 985{ 986 if (s->handshake_func == 0) { 987 SSLerr(SSL_F_SSL_WRITE, 988 SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if (s->shutdown & SSL_SENT_SHUTDOWN) { 993 s->rwstate = SSL_NOTHING; 994 SSLerr(SSL_F_SSL_WRITE, 995 SSL_R_PROTOCOL_IS_SHUTDOWN); 996 return (-1); 997 } 998 return (s->method->ssl_write(s, buf, num)); 999} 1000 1001int 1002SSL_shutdown(SSL *s) 1003{ 1004 /* 1005 * Note that this function behaves differently from what one might 1006 * expect. Return values are 0 for no success (yet), 1007 * 1 for success; but calling it once is usually not enough, 1008 * even if blocking I/O is used (see ssl3_shutdown). 1009 */ 1010 1011 if (s->handshake_func == 0) { 1012 SSLerr(SSL_F_SSL_SHUTDOWN, 1013 SSL_R_UNINITIALIZED); 1014 return (-1); 1015 } 1016 1017 if ((s != NULL) && !SSL_in_init(s)) 1018 return (s->method->ssl_shutdown(s)); 1019 else 1020 return (1); 1021} 1022 1023int 1024SSL_renegotiate(SSL *s) 1025{ 1026 if (s->renegotiate == 0) 1027 s->renegotiate = 1; 1028 1029 s->new_session = 1; 1030 1031 return (s->method->ssl_renegotiate(s)); 1032} 1033 1034int 1035SSL_renegotiate_abbreviated(SSL *s) 1036{ 1037 if (s->renegotiate == 0) 1038 s->renegotiate = 1; 1039 1040 s->new_session = 0; 1041 1042 return (s->method->ssl_renegotiate(s)); 1043} 1044 1045int 1046SSL_renegotiate_pending(SSL *s) 1047{ 1048 /* 1049 * Becomes true when negotiation is requested; 1050 * false again once a handshake has finished. 1051 */ 1052 return (s->renegotiate != 0); 1053} 1054 1055long 1056SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1057{ 1058 long l; 1059 1060 switch (cmd) { 1061 case SSL_CTRL_GET_READ_AHEAD: 1062 return (s->read_ahead); 1063 case SSL_CTRL_SET_READ_AHEAD: 1064 l = s->read_ahead; 1065 s->read_ahead = larg; 1066 return (l); 1067 1068 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1069 s->msg_callback_arg = parg; 1070 return (1); 1071 1072 case SSL_CTRL_OPTIONS: 1073 return (s->options|=larg); 1074 case SSL_CTRL_CLEAR_OPTIONS: 1075 return (s->options&=~larg); 1076 case SSL_CTRL_MODE: 1077 return (s->mode|=larg); 1078 case SSL_CTRL_CLEAR_MODE: 1079 return (s->mode &=~larg); 1080 case SSL_CTRL_GET_MAX_CERT_LIST: 1081 return (s->max_cert_list); 1082 case SSL_CTRL_SET_MAX_CERT_LIST: 1083 l = s->max_cert_list; 1084 s->max_cert_list = larg; 1085 return (l); 1086 case SSL_CTRL_SET_MTU: 1087#ifndef OPENSSL_NO_DTLS1 1088 if (larg < (long)dtls1_min_mtu()) 1089 return (0); 1090#endif 1091 if (SSL_IS_DTLS(s)) { 1092 s->d1->mtu = larg; 1093 return (larg); 1094 } 1095 return (0); 1096 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1097 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1098 return (0); 1099 s->max_send_fragment = larg; 1100 return (1); 1101 case SSL_CTRL_GET_RI_SUPPORT: 1102 if (s->s3) 1103 return (s->s3->send_connection_binding); 1104 else return (0); 1105 default: 1106 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1107 } 1108} 1109 1110long 1111SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1112{ 1113 switch (cmd) { 1114 case SSL_CTRL_SET_MSG_CALLBACK: 1115 s->msg_callback = (void (*)(int write_p, int version, 1116 int content_type, const void *buf, size_t len, 1117 SSL *ssl, void *arg))(fp); 1118 return (1); 1119 1120 default: 1121 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1122 } 1123} 1124 1125LHASH_OF(SSL_SESSION) * 1126SSL_CTX_sessions(SSL_CTX *ctx) 1127{ 1128 return (ctx->sessions); 1129} 1130 1131long 1132SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1133{ 1134 long l; 1135 1136 switch (cmd) { 1137 case SSL_CTRL_GET_READ_AHEAD: 1138 return (ctx->read_ahead); 1139 case SSL_CTRL_SET_READ_AHEAD: 1140 l = ctx->read_ahead; 1141 ctx->read_ahead = larg; 1142 return (l); 1143 1144 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1145 ctx->msg_callback_arg = parg; 1146 return (1); 1147 1148 case SSL_CTRL_GET_MAX_CERT_LIST: 1149 return (ctx->max_cert_list); 1150 case SSL_CTRL_SET_MAX_CERT_LIST: 1151 l = ctx->max_cert_list; 1152 ctx->max_cert_list = larg; 1153 return (l); 1154 1155 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1156 l = ctx->session_cache_size; 1157 ctx->session_cache_size = larg; 1158 return (l); 1159 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1160 return (ctx->session_cache_size); 1161 case SSL_CTRL_SET_SESS_CACHE_MODE: 1162 l = ctx->session_cache_mode; 1163 ctx->session_cache_mode = larg; 1164 return (l); 1165 case SSL_CTRL_GET_SESS_CACHE_MODE: 1166 return (ctx->session_cache_mode); 1167 1168 case SSL_CTRL_SESS_NUMBER: 1169 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1170 case SSL_CTRL_SESS_CONNECT: 1171 return (ctx->stats.sess_connect); 1172 case SSL_CTRL_SESS_CONNECT_GOOD: 1173 return (ctx->stats.sess_connect_good); 1174 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1175 return (ctx->stats.sess_connect_renegotiate); 1176 case SSL_CTRL_SESS_ACCEPT: 1177 return (ctx->stats.sess_accept); 1178 case SSL_CTRL_SESS_ACCEPT_GOOD: 1179 return (ctx->stats.sess_accept_good); 1180 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1181 return (ctx->stats.sess_accept_renegotiate); 1182 case SSL_CTRL_SESS_HIT: 1183 return (ctx->stats.sess_hit); 1184 case SSL_CTRL_SESS_CB_HIT: 1185 return (ctx->stats.sess_cb_hit); 1186 case SSL_CTRL_SESS_MISSES: 1187 return (ctx->stats.sess_miss); 1188 case SSL_CTRL_SESS_TIMEOUTS: 1189 return (ctx->stats.sess_timeout); 1190 case SSL_CTRL_SESS_CACHE_FULL: 1191 return (ctx->stats.sess_cache_full); 1192 case SSL_CTRL_OPTIONS: 1193 return (ctx->options|=larg); 1194 case SSL_CTRL_CLEAR_OPTIONS: 1195 return (ctx->options&=~larg); 1196 case SSL_CTRL_MODE: 1197 return (ctx->mode|=larg); 1198 case SSL_CTRL_CLEAR_MODE: 1199 return (ctx->mode&=~larg); 1200 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1201 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1202 return (0); 1203 ctx->max_send_fragment = larg; 1204 return (1); 1205 default: 1206 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1207 } 1208} 1209 1210long 1211SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1212{ 1213 switch (cmd) { 1214 case SSL_CTRL_SET_MSG_CALLBACK: 1215 ctx->msg_callback = (void (*)(int write_p, int version, 1216 int content_type, const void *buf, size_t len, SSL *ssl, 1217 void *arg))(fp); 1218 return (1); 1219 1220 default: 1221 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1222 } 1223} 1224 1225int 1226ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1227{ 1228 long l; 1229 1230 l = a->id - b->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235} 1236 1237int 1238ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1239 const SSL_CIPHER * const *bp) 1240{ 1241 long l; 1242 1243 l = (*ap)->id - (*bp)->id; 1244 if (l == 0L) 1245 return (0); 1246 else 1247 return ((l > 0) ? 1:-1); 1248} 1249 1250/* 1251 * Return a STACK of the ciphers available for the SSL and in order of 1252 * preference. 1253 */ 1254STACK_OF(SSL_CIPHER) * 1255SSL_get_ciphers(const SSL *s) 1256{ 1257 if (s != NULL) { 1258 if (s->cipher_list != NULL) { 1259 return (s->cipher_list); 1260 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1261 return (s->ctx->cipher_list); 1262 } 1263 } 1264 return (NULL); 1265} 1266 1267/* 1268 * Return a STACK of the ciphers available for the SSL and in order of 1269 * algorithm id. 1270 */ 1271STACK_OF(SSL_CIPHER) * 1272ssl_get_ciphers_by_id(SSL *s) 1273{ 1274 if (s != NULL) { 1275 if (s->cipher_list_by_id != NULL) { 1276 return (s->cipher_list_by_id); 1277 } else if ((s->ctx != NULL) && 1278 (s->ctx->cipher_list_by_id != NULL)) { 1279 return (s->ctx->cipher_list_by_id); 1280 } 1281 } 1282 return (NULL); 1283} 1284 1285/* The old interface to get the same thing as SSL_get_ciphers(). */ 1286const char * 1287SSL_get_cipher_list(const SSL *s, int n) 1288{ 1289 SSL_CIPHER *c; 1290 STACK_OF(SSL_CIPHER) *sk; 1291 1292 if (s == NULL) 1293 return (NULL); 1294 sk = SSL_get_ciphers(s); 1295 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1296 return (NULL); 1297 c = sk_SSL_CIPHER_value(sk, n); 1298 if (c == NULL) 1299 return (NULL); 1300 return (c->name); 1301} 1302 1303/* Specify the ciphers to be used by default by the SSL_CTX. */ 1304int 1305SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1306{ 1307 STACK_OF(SSL_CIPHER) *sk; 1308 1309 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1310 &ctx->cipher_list_by_id, str); 1311 /* 1312 * ssl_create_cipher_list may return an empty stack if it 1313 * was unable to find a cipher matching the given rule string 1314 * (for example if the rule string specifies a cipher which 1315 * has been disabled). This is not an error as far as 1316 * ssl_create_cipher_list is concerned, and hence 1317 * ctx->cipher_list and ctx->cipher_list_by_id has been 1318 * updated. 1319 */ 1320 if (sk == NULL) 1321 return (0); 1322 else if (sk_SSL_CIPHER_num(sk) == 0) { 1323 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1324 SSL_R_NO_CIPHER_MATCH); 1325 return (0); 1326 } 1327 return (1); 1328} 1329 1330/* Specify the ciphers to be used by the SSL. */ 1331int 1332SSL_set_cipher_list(SSL *s, const char *str) 1333{ 1334 STACK_OF(SSL_CIPHER) *sk; 1335 1336 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1337 &s->cipher_list_by_id, str); 1338 /* see comment in SSL_CTX_set_cipher_list */ 1339 if (sk == NULL) 1340 return (0); 1341 else if (sk_SSL_CIPHER_num(sk) == 0) { 1342 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1343 SSL_R_NO_CIPHER_MATCH); 1344 return (0); 1345 } 1346 return (1); 1347} 1348 1349/* works well for SSLv2, not so good for SSLv3 */ 1350char * 1351SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1352{ 1353 char *end; 1354 STACK_OF(SSL_CIPHER) *sk; 1355 SSL_CIPHER *c; 1356 size_t curlen = 0; 1357 int i; 1358 1359 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1360 return (NULL); 1361 1362 sk = s->session->ciphers; 1363 if (sk_SSL_CIPHER_num(sk) == 0) 1364 return (NULL); 1365 1366 buf[0] = '\0'; 1367 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1368 c = sk_SSL_CIPHER_value(sk, i); 1369 end = buf + curlen; 1370 if (strlcat(buf, c->name, len) >= len || 1371 (curlen = strlcat(buf, ":", len)) >= len) { 1372 /* remove truncated cipher from list */ 1373 *end = '\0'; 1374 break; 1375 } 1376 } 1377 /* remove trailing colon */ 1378 if ((end = strrchr(buf, ':')) != NULL) 1379 *end = '\0'; 1380 return (buf); 1381} 1382 1383int 1384ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1385{ 1386 int i; 1387 SSL_CIPHER *c; 1388 unsigned char *q; 1389 1390 if (sk == NULL) 1391 return (0); 1392 q = p; 1393 1394 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1395 c = sk_SSL_CIPHER_value(sk, i); 1396 1397 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1398 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1399 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1400 continue; 1401 1402 s2n(ssl3_cipher_get_value(c), p); 1403 } 1404 1405 /* 1406 * If p == q, no ciphers and caller indicates an error. Otherwise 1407 * add SCSV if not renegotiating. 1408 */ 1409 if (p != q && !s->renegotiate) 1410 s2n(SSL3_CK_SCSV & SSL3_CK_VALUE_MASK, p); 1411 1412 return (p - q); 1413} 1414 1415STACK_OF(SSL_CIPHER) * 1416ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1417 STACK_OF(SSL_CIPHER) **skp) 1418{ 1419 const SSL_CIPHER *c; 1420 STACK_OF(SSL_CIPHER) *sk; 1421 int i; 1422 uint16_t cipher_value; 1423 1424 if (s->s3) 1425 s->s3->send_connection_binding = 0; 1426 1427 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1428 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1429 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1430 return (NULL); 1431 } 1432 if (skp == NULL || *skp == NULL) { 1433 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1434 if (sk == NULL) 1435 goto err; 1436 } else { 1437 sk = *skp; 1438 sk_SSL_CIPHER_zero(sk); 1439 } 1440 1441 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1442 n2s(p, cipher_value); 1443 1444 /* Check for SCSV */ 1445 if (s->s3 && (SSL3_CK_ID | cipher_value) == SSL3_CK_SCSV) { 1446 /* SCSV is fatal if renegotiating. */ 1447 if (s->renegotiate) { 1448 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1449 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1450 ssl3_send_alert(s, SSL3_AL_FATAL, 1451 SSL_AD_HANDSHAKE_FAILURE); 1452 1453 goto err; 1454 } 1455 s->s3->send_connection_binding = 1; 1456 continue; 1457 } 1458 1459 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1460 if (!sk_SSL_CIPHER_push(sk, c)) { 1461 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1462 ERR_R_MALLOC_FAILURE); 1463 goto err; 1464 } 1465 } 1466 } 1467 1468 if (skp != NULL) 1469 *skp = sk; 1470 return (sk); 1471 1472err: 1473 if (skp == NULL || *skp == NULL) 1474 sk_SSL_CIPHER_free(sk); 1475 return (NULL); 1476} 1477 1478 1479/* 1480 * Return a servername extension value if provided in Client Hello, or NULL. 1481 * So far, only host_name types are defined (RFC 3546). 1482 */ 1483const char * 1484SSL_get_servername(const SSL *s, const int type) 1485{ 1486 if (type != TLSEXT_NAMETYPE_host_name) 1487 return (NULL); 1488 1489 return (s->session && !s->tlsext_hostname ? 1490 s->session->tlsext_hostname : 1491 s->tlsext_hostname); 1492} 1493 1494int 1495SSL_get_servername_type(const SSL *s) 1496{ 1497 if (s->session && 1498 (!s->tlsext_hostname ? 1499 s->session->tlsext_hostname : s->tlsext_hostname)) 1500 return (TLSEXT_NAMETYPE_host_name); 1501 return (-1); 1502} 1503 1504/* 1505 * SSL_select_next_proto implements the standard protocol selection. It is 1506 * expected that this function is called from the callback set by 1507 * SSL_CTX_set_next_proto_select_cb. 1508 * 1509 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1510 * strings. The length byte itself is not included in the length. A byte 1511 * string of length 0 is invalid. No byte string may be truncated. 1512 * 1513 * The current, but experimental algorithm for selecting the protocol is: 1514 * 1515 * 1) If the server doesn't support NPN then this is indicated to the 1516 * callback. In this case, the client application has to abort the connection 1517 * or have a default application level protocol. 1518 * 1519 * 2) If the server supports NPN, but advertises an empty list then the 1520 * client selects the first protcol in its list, but indicates via the 1521 * API that this fallback case was enacted. 1522 * 1523 * 3) Otherwise, the client finds the first protocol in the server's list 1524 * that it supports and selects this protocol. This is because it's 1525 * assumed that the server has better information about which protocol 1526 * a client should use. 1527 * 1528 * 4) If the client doesn't support any of the server's advertised 1529 * protocols, then this is treated the same as case 2. 1530 * 1531 * It returns either 1532 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1533 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1534 */ 1535int 1536SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1537 const unsigned char *server, unsigned int server_len, 1538 const unsigned char *client, unsigned int client_len) 1539{ 1540 unsigned int i, j; 1541 const unsigned char *result; 1542 int status = OPENSSL_NPN_UNSUPPORTED; 1543 1544 /* 1545 * For each protocol in server preference order, 1546 * see if we support it. 1547 */ 1548 for (i = 0; i < server_len; ) { 1549 for (j = 0; j < client_len; ) { 1550 if (server[i] == client[j] && 1551 memcmp(&server[i + 1], 1552 &client[j + 1], server[i]) == 0) { 1553 /* We found a match */ 1554 result = &server[i]; 1555 status = OPENSSL_NPN_NEGOTIATED; 1556 goto found; 1557 } 1558 j += client[j]; 1559 j++; 1560 } 1561 i += server[i]; 1562 i++; 1563 } 1564 1565 /* There's no overlap between our protocols and the server's list. */ 1566 result = client; 1567 status = OPENSSL_NPN_NO_OVERLAP; 1568 1569found: 1570 *out = (unsigned char *) result + 1; 1571 *outlen = result[0]; 1572 return (status); 1573} 1574 1575/* 1576 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1577 * requested protocol for this connection and returns 0. If the client didn't 1578 * request any protocol, then *data is set to NULL. 1579 * 1580 * Note that the client can request any protocol it chooses. The value returned 1581 * from this function need not be a member of the list of supported protocols 1582 * provided by the callback. 1583 */ 1584void 1585SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1586 unsigned *len) 1587{ 1588 *data = s->next_proto_negotiated; 1589 if (!*data) { 1590 *len = 0; 1591 } else { 1592 *len = s->next_proto_negotiated_len; 1593 } 1594} 1595 1596/* 1597 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1598 * TLS server needs a list of supported protocols for Next Protocol 1599 * Negotiation. The returned list must be in wire format. The list is returned 1600 * by setting |out| to point to it and |outlen| to its length. This memory will 1601 * not be modified, but one should assume that the SSL* keeps a reference to 1602 * it. 1603 * 1604 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1605 * Otherwise, no such extension will be included in the ServerHello. 1606 */ 1607void 1608SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1609 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1610{ 1611 ctx->next_protos_advertised_cb = cb; 1612 ctx->next_protos_advertised_cb_arg = arg; 1613} 1614 1615/* 1616 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1617 * client needs to select a protocol from the server's provided list. |out| 1618 * must be set to point to the selected protocol (which may be within |in|). 1619 * The length of the protocol name must be written into |outlen|. The server's 1620 * advertised protocols are provided in |in| and |inlen|. The callback can 1621 * assume that |in| is syntactically valid. 1622 * 1623 * The client must select a protocol. It is fatal to the connection if this 1624 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1625 */ 1626void 1627SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1628 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1629 unsigned int inlen, void *arg), void *arg) 1630{ 1631 ctx->next_proto_select_cb = cb; 1632 ctx->next_proto_select_cb_arg = arg; 1633} 1634 1635/* 1636 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1637 * protocols, which must be in wire-format (i.e. a series of non-empty, 1638 * 8-bit length-prefixed strings). Returns 0 on success. 1639 */ 1640int 1641SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1642 unsigned int protos_len) 1643{ 1644 free(ctx->alpn_client_proto_list); 1645 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1646 return (1); 1647 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1648 ctx->alpn_client_proto_list_len = protos_len; 1649 1650 return (0); 1651} 1652 1653/* 1654 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1655 * protocols, which must be in wire-format (i.e. a series of non-empty, 1656 * 8-bit length-prefixed strings). Returns 0 on success. 1657 */ 1658int 1659SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1660 unsigned int protos_len) 1661{ 1662 free(ssl->alpn_client_proto_list); 1663 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1664 return (1); 1665 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1666 ssl->alpn_client_proto_list_len = protos_len; 1667 1668 return (0); 1669} 1670 1671/* 1672 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1673 * ClientHello processing in order to select an ALPN protocol from the 1674 * client's list of offered protocols. 1675 */ 1676void 1677SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1678 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1679 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1680{ 1681 ctx->alpn_select_cb = cb; 1682 ctx->alpn_select_cb_arg = arg; 1683} 1684 1685/* 1686 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1687 * it sets data to point to len bytes of protocol name (not including the 1688 * leading length-prefix byte). If the server didn't respond with* a negotiated 1689 * protocol then len will be zero. 1690 */ 1691void 1692SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1693 unsigned *len) 1694{ 1695 *data = NULL; 1696 *len = 0; 1697 1698 if (ssl->s3 != NULL) { 1699 *data = ssl->s3->alpn_selected; 1700 *len = ssl->s3->alpn_selected_len; 1701 } 1702} 1703 1704int 1705SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1706 const char *label, size_t llen, const unsigned char *p, size_t plen, 1707 int use_context) 1708{ 1709 if (s->version < TLS1_VERSION) 1710 return (-1); 1711 1712 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1713 label, llen, p, plen, use_context)); 1714} 1715 1716static unsigned long 1717ssl_session_hash(const SSL_SESSION *a) 1718{ 1719 unsigned long l; 1720 1721 l = (unsigned long) 1722 ((unsigned int) a->session_id[0] )| 1723 ((unsigned int) a->session_id[1]<< 8L)| 1724 ((unsigned long)a->session_id[2]<<16L)| 1725 ((unsigned long)a->session_id[3]<<24L); 1726 return (l); 1727} 1728 1729/* 1730 * NB: If this function (or indeed the hash function which uses a sort of 1731 * coarser function than this one) is changed, ensure 1732 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1733 * able to construct an SSL_SESSION that will collide with any existing session 1734 * with a matching session ID. 1735 */ 1736static int 1737ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1738{ 1739 if (a->ssl_version != b->ssl_version) 1740 return (1); 1741 if (a->session_id_length != b->session_id_length) 1742 return (1); 1743 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1744 return (1); 1745 return (0); 1746} 1747 1748/* 1749 * These wrapper functions should remain rather than redeclaring 1750 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1751 * variable. The reason is that the functions aren't static, they're exposed via 1752 * ssl.h. 1753 */ 1754static 1755IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1756static 1757IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1758 1759SSL_CTX * 1760SSL_CTX_new(const SSL_METHOD *meth) 1761{ 1762 SSL_CTX *ret = NULL; 1763 1764 if (meth == NULL) { 1765 SSLerr(SSL_F_SSL_CTX_NEW, 1766 SSL_R_NULL_SSL_METHOD_PASSED); 1767 return (NULL); 1768 } 1769 1770 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1771 SSLerr(SSL_F_SSL_CTX_NEW, 1772 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1773 goto err; 1774 } 1775 ret = calloc(1, sizeof(SSL_CTX)); 1776 if (ret == NULL) 1777 goto err; 1778 1779 ret->method = meth; 1780 1781 ret->cert_store = NULL; 1782 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1783 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1784 ret->session_cache_head = NULL; 1785 ret->session_cache_tail = NULL; 1786 1787 /* We take the system default */ 1788 ret->session_timeout = meth->get_timeout(); 1789 1790 ret->new_session_cb = 0; 1791 ret->remove_session_cb = 0; 1792 ret->get_session_cb = 0; 1793 ret->generate_session_id = 0; 1794 1795 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1796 1797 ret->references = 1; 1798 ret->quiet_shutdown = 0; 1799 1800 ret->info_callback = NULL; 1801 1802 ret->app_verify_callback = 0; 1803 ret->app_verify_arg = NULL; 1804 1805 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1806 ret->read_ahead = 0; 1807 ret->msg_callback = 0; 1808 ret->msg_callback_arg = NULL; 1809 ret->verify_mode = SSL_VERIFY_NONE; 1810 ret->sid_ctx_length = 0; 1811 ret->default_verify_callback = NULL; 1812 if ((ret->cert = ssl_cert_new()) == NULL) 1813 goto err; 1814 1815 ret->default_passwd_callback = 0; 1816 ret->default_passwd_callback_userdata = NULL; 1817 ret->client_cert_cb = 0; 1818 ret->app_gen_cookie_cb = 0; 1819 ret->app_verify_cookie_cb = 0; 1820 1821 ret->sessions = lh_SSL_SESSION_new(); 1822 if (ret->sessions == NULL) 1823 goto err; 1824 ret->cert_store = X509_STORE_new(); 1825 if (ret->cert_store == NULL) 1826 goto err; 1827 1828 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1829 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1830 if (ret->cipher_list == NULL || 1831 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1832 SSLerr(SSL_F_SSL_CTX_NEW, 1833 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1834 goto err2; 1835 } 1836 1837 ret->param = X509_VERIFY_PARAM_new(); 1838 if (!ret->param) 1839 goto err; 1840 1841 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1842 SSLerr(SSL_F_SSL_CTX_NEW, 1843 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1844 goto err2; 1845 } 1846 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1847 SSLerr(SSL_F_SSL_CTX_NEW, 1848 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1849 goto err2; 1850 } 1851 1852 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1853 goto err; 1854 1855 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1856 1857 ret->extra_certs = NULL; 1858 1859 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1860 1861 ret->tlsext_servername_callback = 0; 1862 ret->tlsext_servername_arg = NULL; 1863 1864 /* Setup RFC4507 ticket keys */ 1865 arc4random_buf(ret->tlsext_tick_key_name, 16); 1866 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1867 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1868 1869 ret->tlsext_status_cb = 0; 1870 ret->tlsext_status_arg = NULL; 1871 1872 ret->next_protos_advertised_cb = 0; 1873 ret->next_proto_select_cb = 0; 1874#ifndef OPENSSL_NO_ENGINE 1875 ret->client_cert_engine = NULL; 1876#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1877#define eng_strx(x) #x 1878#define eng_str(x) eng_strx(x) 1879 /* Use specific client engine automatically... ignore errors */ 1880 { 1881 ENGINE *eng; 1882 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1883 if (!eng) { 1884 ERR_clear_error(); 1885 ENGINE_load_builtin_engines(); 1886 eng = ENGINE_by_id(eng_str( 1887 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1888 } 1889 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1890 ERR_clear_error(); 1891 } 1892#endif 1893#endif 1894 /* 1895 * Default is to connect to non-RI servers. When RI is more widely 1896 * deployed might change this. 1897 */ 1898 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1899 1900 /* Disable SSLv3 by default. */ 1901 ret->options |= SSL_OP_NO_SSLv3; 1902 1903 return (ret); 1904err: 1905 SSLerr(SSL_F_SSL_CTX_NEW, 1906 ERR_R_MALLOC_FAILURE); 1907err2: 1908 SSL_CTX_free(ret); 1909 return (NULL); 1910} 1911 1912void 1913SSL_CTX_free(SSL_CTX *a) 1914{ 1915 int i; 1916 1917 if (a == NULL) 1918 return; 1919 1920 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1921 if (i > 0) 1922 return; 1923 1924 if (a->param) 1925 X509_VERIFY_PARAM_free(a->param); 1926 1927 /* 1928 * Free internal session cache. However: the remove_cb() may reference 1929 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1930 * after the sessions were flushed. 1931 * As the ex_data handling routines might also touch the session cache, 1932 * the most secure solution seems to be: empty (flush) the cache, then 1933 * free ex_data, then finally free the cache. 1934 * (See ticket [openssl.org #212].) 1935 */ 1936 if (a->sessions != NULL) 1937 SSL_CTX_flush_sessions(a, 0); 1938 1939 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1940 1941 if (a->sessions != NULL) 1942 lh_SSL_SESSION_free(a->sessions); 1943 1944 if (a->cert_store != NULL) 1945 X509_STORE_free(a->cert_store); 1946 if (a->cipher_list != NULL) 1947 sk_SSL_CIPHER_free(a->cipher_list); 1948 if (a->cipher_list_by_id != NULL) 1949 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1950 if (a->cert != NULL) 1951 ssl_cert_free(a->cert); 1952 if (a->client_CA != NULL) 1953 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1954 if (a->extra_certs != NULL) 1955 sk_X509_pop_free(a->extra_certs, X509_free); 1956 1957#ifndef OPENSSL_NO_SRTP 1958 if (a->srtp_profiles) 1959 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1960#endif 1961 1962#ifndef OPENSSL_NO_ENGINE 1963 if (a->client_cert_engine) 1964 ENGINE_finish(a->client_cert_engine); 1965#endif 1966 1967 free(a->alpn_client_proto_list); 1968 1969 free(a); 1970} 1971 1972void 1973SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1974{ 1975 ctx->default_passwd_callback = cb; 1976} 1977 1978void 1979SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1980{ 1981 ctx->default_passwd_callback_userdata = u; 1982} 1983 1984void 1985SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1986 void *), void *arg) 1987{ 1988 ctx->app_verify_callback = cb; 1989 ctx->app_verify_arg = arg; 1990} 1991 1992void 1993SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1994{ 1995 ctx->verify_mode = mode; 1996 ctx->default_verify_callback = cb; 1997} 1998 1999void 2000SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2001{ 2002 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2003} 2004 2005void 2006ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2007{ 2008 CERT_PKEY *cpk; 2009 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2010 unsigned long mask_k, mask_a; 2011 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2012 int have_ecdh_tmp; 2013 X509 *x = NULL; 2014 EVP_PKEY *ecc_pkey = NULL; 2015 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2016 2017 if (c == NULL) 2018 return; 2019 2020 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2021 c->dh_tmp_auto != 0); 2022 2023 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2024 c->ecdh_tmp_auto != 0); 2025 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2026 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2027 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2028 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2029 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2030 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2031/* FIX THIS EAY EAY EAY */ 2032 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2033 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2034 mask_k = 0; 2035 mask_a = 0; 2036 2037 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2038 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2039 mask_k |= SSL_kGOST; 2040 mask_a |= SSL_aGOST01; 2041 } 2042 2043 if (rsa_enc) 2044 mask_k|=SSL_kRSA; 2045 2046 if (dh_tmp) 2047 mask_k|=SSL_kDHE; 2048 2049 if (rsa_enc || rsa_sign) 2050 mask_a|=SSL_aRSA; 2051 2052 if (dsa_sign) 2053 mask_a|=SSL_aDSS; 2054 2055 mask_a|=SSL_aNULL; 2056 2057 /* 2058 * An ECC certificate may be usable for ECDH and/or 2059 * ECDSA cipher suites depending on the key usage extension. 2060 */ 2061 if (have_ecc_cert) { 2062 /* This call populates extension flags (ex_flags) */ 2063 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2064 X509_check_purpose(x, -1, 0); 2065 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2066 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2067 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2068 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2069 ecc_pkey = X509_get_pubkey(x); 2070 EVP_PKEY_free(ecc_pkey); 2071 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2072 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2073 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2074 } 2075 if (ecdh_ok) { 2076 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2077 mask_k|=SSL_kECDHr; 2078 mask_a|=SSL_aECDH; 2079 } 2080 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2081 mask_k|=SSL_kECDHe; 2082 mask_a|=SSL_aECDH; 2083 } 2084 } 2085 if (ecdsa_ok) 2086 mask_a|=SSL_aECDSA; 2087 } 2088 2089 if (have_ecdh_tmp) { 2090 mask_k|=SSL_kECDHE; 2091 } 2092 2093 2094 c->mask_k = mask_k; 2095 c->mask_a = mask_a; 2096 c->valid = 1; 2097} 2098 2099/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2100#define ku_reject(x, usage) \ 2101 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2102 2103 2104int 2105ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2106{ 2107 unsigned long alg_k, alg_a; 2108 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2109 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2110 2111 alg_k = cs->algorithm_mkey; 2112 alg_a = cs->algorithm_auth; 2113 2114 /* This call populates the ex_flags field correctly */ 2115 X509_check_purpose(x, -1, 0); 2116 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2117 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2118 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2119 } 2120 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2121 /* key usage, if present, must allow key agreement */ 2122 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2123 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2124 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2125 return (0); 2126 } 2127 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2128 TLS1_2_VERSION) { 2129 /* signature alg must be ECDSA */ 2130 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2131 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2132 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2133 return (0); 2134 } 2135 } 2136 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2137 TLS1_2_VERSION) { 2138 /* signature alg must be RSA */ 2139 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2140 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2141 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2142 return (0); 2143 } 2144 } 2145 } 2146 if (alg_a & SSL_aECDSA) { 2147 /* key usage, if present, must allow signing */ 2148 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2149 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2150 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2151 return (0); 2152 } 2153 } 2154 2155 return (1); 2156 /* all checks are ok */ 2157} 2158 2159 2160/* THIS NEEDS CLEANING UP */ 2161CERT_PKEY * 2162ssl_get_server_send_pkey(const SSL *s) 2163{ 2164 unsigned long alg_k, alg_a; 2165 CERT *c; 2166 int i; 2167 2168 c = s->cert; 2169 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2170 2171 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2172 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2173 2174 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2175 /* 2176 * We don't need to look at SSL_kECDHE 2177 * since no certificate is needed for 2178 * anon ECDH and for authenticated 2179 * ECDHE, the check for the auth 2180 * algorithm will set i correctly 2181 * NOTE: For ECDH-RSA, we need an ECC 2182 * not an RSA cert but for EECDH-RSA 2183 * we need an RSA cert. Placing the 2184 * checks for SSL_kECDH before RSA 2185 * checks ensures the correct cert is chosen. 2186 */ 2187 i = SSL_PKEY_ECC; 2188 } else if (alg_a & SSL_aECDSA) { 2189 i = SSL_PKEY_ECC; 2190 } else if (alg_a & SSL_aDSS) { 2191 i = SSL_PKEY_DSA_SIGN; 2192 } else if (alg_a & SSL_aRSA) { 2193 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2194 i = SSL_PKEY_RSA_SIGN; 2195 else 2196 i = SSL_PKEY_RSA_ENC; 2197 } else if (alg_a & SSL_aGOST01) { 2198 i = SSL_PKEY_GOST01; 2199 } else { /* if (alg_a & SSL_aNULL) */ 2200 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2201 return (NULL); 2202 } 2203 2204 return (c->pkeys + i); 2205} 2206 2207X509 * 2208ssl_get_server_send_cert(const SSL *s) 2209{ 2210 CERT_PKEY *cpk; 2211 2212 cpk = ssl_get_server_send_pkey(s); 2213 if (!cpk) 2214 return (NULL); 2215 return (cpk->x509); 2216} 2217 2218EVP_PKEY * 2219ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2220{ 2221 unsigned long alg_a; 2222 CERT *c; 2223 int idx = -1; 2224 2225 alg_a = cipher->algorithm_auth; 2226 c = s->cert; 2227 2228 if ((alg_a & SSL_aDSS) && 2229 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2230 idx = SSL_PKEY_DSA_SIGN; 2231 else if (alg_a & SSL_aRSA) { 2232 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2233 idx = SSL_PKEY_RSA_SIGN; 2234 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2235 idx = SSL_PKEY_RSA_ENC; 2236 } else if ((alg_a & SSL_aECDSA) && 2237 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2238 idx = SSL_PKEY_ECC; 2239 if (idx == -1) { 2240 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2241 return (NULL); 2242 } 2243 if (pmd) 2244 *pmd = c->pkeys[idx].digest; 2245 return (c->pkeys[idx].privatekey); 2246} 2247 2248DH * 2249ssl_get_auto_dh(SSL *s) 2250{ 2251 CERT_PKEY *cpk; 2252 int keylen; 2253 DH *dhp; 2254 2255 if (s->cert->dh_tmp_auto == 2) { 2256 keylen = 1024; 2257 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2258 keylen = 1024; 2259 if (s->s3->tmp.new_cipher->strength_bits == 256) 2260 keylen = 3072; 2261 } else { 2262 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2263 return (NULL); 2264 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2265 return (NULL); 2266 keylen = EVP_PKEY_bits(cpk->privatekey); 2267 } 2268 2269 if ((dhp = DH_new()) == NULL) 2270 return (NULL); 2271 2272 dhp->g = BN_new(); 2273 if (dhp->g != NULL) 2274 BN_set_word(dhp->g, 2); 2275 2276 if (keylen >= 8192) 2277 dhp->p = get_rfc3526_prime_8192(NULL); 2278 else if (keylen >= 4096) 2279 dhp->p = get_rfc3526_prime_4096(NULL); 2280 else if (keylen >= 3072) 2281 dhp->p = get_rfc3526_prime_3072(NULL); 2282 else if (keylen >= 2048) 2283 dhp->p = get_rfc3526_prime_2048(NULL); 2284 else if (keylen >= 1536) 2285 dhp->p = get_rfc3526_prime_1536(NULL); 2286 else 2287 dhp->p = get_rfc2409_prime_1024(NULL); 2288 2289 if (dhp->p == NULL || dhp->g == NULL) { 2290 DH_free(dhp); 2291 return (NULL); 2292 } 2293 return (dhp); 2294} 2295 2296void 2297ssl_update_cache(SSL *s, int mode) 2298{ 2299 int i; 2300 2301 /* 2302 * If the session_id_length is 0, we are not supposed to cache it, 2303 * and it would be rather hard to do anyway :-) 2304 */ 2305 if (s->session->session_id_length == 0) 2306 return; 2307 2308 i = s->session_ctx->session_cache_mode; 2309 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2310 || SSL_CTX_add_session(s->session_ctx, s->session)) 2311 && (s->session_ctx->new_session_cb != NULL)) { 2312 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2313 if (!s->session_ctx->new_session_cb(s, s->session)) 2314 SSL_SESSION_free(s->session); 2315 } 2316 2317 /* auto flush every 255 connections */ 2318 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2319 ((i & mode) == mode)) { 2320 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2321 s->session_ctx->stats.sess_connect_good : 2322 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2323 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2324 } 2325 } 2326} 2327 2328const SSL_METHOD * 2329SSL_get_ssl_method(SSL *s) 2330{ 2331 return (s->method); 2332} 2333 2334int 2335SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2336{ 2337 int conn = -1; 2338 int ret = 1; 2339 2340 if (s->method != meth) { 2341 if (s->handshake_func != NULL) 2342 conn = (s->handshake_func == s->method->ssl_connect); 2343 2344 if (s->method->version == meth->version) 2345 s->method = meth; 2346 else { 2347 s->method->ssl_free(s); 2348 s->method = meth; 2349 ret = s->method->ssl_new(s); 2350 } 2351 2352 if (conn == 1) 2353 s->handshake_func = meth->ssl_connect; 2354 else if (conn == 0) 2355 s->handshake_func = meth->ssl_accept; 2356 } 2357 return (ret); 2358} 2359 2360int 2361SSL_get_error(const SSL *s, int i) 2362{ 2363 int reason; 2364 unsigned long l; 2365 BIO *bio; 2366 2367 if (i > 0) 2368 return (SSL_ERROR_NONE); 2369 2370 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2371 * etc, where we do encode the error */ 2372 if ((l = ERR_peek_error()) != 0) { 2373 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2374 return (SSL_ERROR_SYSCALL); 2375 else 2376 return (SSL_ERROR_SSL); 2377 } 2378 2379 if ((i < 0) && SSL_want_read(s)) { 2380 bio = SSL_get_rbio(s); 2381 if (BIO_should_read(bio)) { 2382 return (SSL_ERROR_WANT_READ); 2383 } else if (BIO_should_write(bio)) { 2384 /* 2385 * This one doesn't make too much sense... We never 2386 * try to write to the rbio, and an application 2387 * program where rbio and wbio are separate couldn't 2388 * even know what it should wait for. However if we 2389 * ever set s->rwstate incorrectly (so that we have 2390 * SSL_want_read(s) instead of SSL_want_write(s)) 2391 * and rbio and wbio *are* the same, this test works 2392 * around that bug; so it might be safer to keep it. 2393 */ 2394 return (SSL_ERROR_WANT_WRITE); 2395 } else if (BIO_should_io_special(bio)) { 2396 reason = BIO_get_retry_reason(bio); 2397 if (reason == BIO_RR_CONNECT) 2398 return (SSL_ERROR_WANT_CONNECT); 2399 else if (reason == BIO_RR_ACCEPT) 2400 return (SSL_ERROR_WANT_ACCEPT); 2401 else 2402 return (SSL_ERROR_SYSCALL); /* unknown */ 2403 } 2404 } 2405 2406 if ((i < 0) && SSL_want_write(s)) { 2407 bio = SSL_get_wbio(s); 2408 if (BIO_should_write(bio)) { 2409 return (SSL_ERROR_WANT_WRITE); 2410 } else if (BIO_should_read(bio)) { 2411 /* 2412 * See above (SSL_want_read(s) with 2413 * BIO_should_write(bio)) 2414 */ 2415 return (SSL_ERROR_WANT_READ); 2416 } else if (BIO_should_io_special(bio)) { 2417 reason = BIO_get_retry_reason(bio); 2418 if (reason == BIO_RR_CONNECT) 2419 return (SSL_ERROR_WANT_CONNECT); 2420 else if (reason == BIO_RR_ACCEPT) 2421 return (SSL_ERROR_WANT_ACCEPT); 2422 else 2423 return (SSL_ERROR_SYSCALL); 2424 } 2425 } 2426 if ((i < 0) && SSL_want_x509_lookup(s)) { 2427 return (SSL_ERROR_WANT_X509_LOOKUP); 2428 } 2429 2430 if (i == 0) { 2431 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2432 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2433 return (SSL_ERROR_ZERO_RETURN); 2434 } 2435 return (SSL_ERROR_SYSCALL); 2436} 2437 2438int 2439SSL_do_handshake(SSL *s) 2440{ 2441 int ret = 1; 2442 2443 if (s->handshake_func == NULL) { 2444 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2445 SSL_R_CONNECTION_TYPE_NOT_SET); 2446 return (-1); 2447 } 2448 2449 s->method->ssl_renegotiate_check(s); 2450 2451 if (SSL_in_init(s) || SSL_in_before(s)) { 2452 ret = s->handshake_func(s); 2453 } 2454 return (ret); 2455} 2456 2457/* 2458 * For the next 2 functions, SSL_clear() sets shutdown and so 2459 * one of these calls will reset it 2460 */ 2461void 2462SSL_set_accept_state(SSL *s) 2463{ 2464 s->server = 1; 2465 s->shutdown = 0; 2466 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2467 s->handshake_func = s->method->ssl_accept; 2468 /* clear the current cipher */ 2469 ssl_clear_cipher_ctx(s); 2470 ssl_clear_hash_ctx(&s->read_hash); 2471 ssl_clear_hash_ctx(&s->write_hash); 2472} 2473 2474void 2475SSL_set_connect_state(SSL *s) 2476{ 2477 s->server = 0; 2478 s->shutdown = 0; 2479 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2480 s->handshake_func = s->method->ssl_connect; 2481 /* clear the current cipher */ 2482 ssl_clear_cipher_ctx(s); 2483 ssl_clear_hash_ctx(&s->read_hash); 2484 ssl_clear_hash_ctx(&s->write_hash); 2485} 2486 2487int 2488ssl_undefined_function(SSL *s) 2489{ 2490 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2491 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2492 return (0); 2493} 2494 2495int 2496ssl_undefined_void_function(void) 2497{ 2498 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2499 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2500 return (0); 2501} 2502 2503int 2504ssl_undefined_const_function(const SSL *s) 2505{ 2506 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2507 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2508 return (0); 2509} 2510 2511SSL_METHOD * 2512ssl_bad_method(int ver) 2513{ 2514 SSLerr(SSL_F_SSL_BAD_METHOD, 2515 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2516 return (NULL); 2517} 2518 2519const char * 2520ssl_version_string(int ver) 2521{ 2522 switch (ver) { 2523 case DTLS1_BAD_VER: 2524 return (SSL_TXT_DTLS1_BAD); 2525 case DTLS1_VERSION: 2526 return (SSL_TXT_DTLS1); 2527 case SSL3_VERSION: 2528 return (SSL_TXT_SSLV3); 2529 case TLS1_VERSION: 2530 return (SSL_TXT_TLSV1); 2531 case TLS1_1_VERSION: 2532 return (SSL_TXT_TLSV1_1); 2533 case TLS1_2_VERSION: 2534 return (SSL_TXT_TLSV1_2); 2535 default: 2536 return ("unknown"); 2537 } 2538} 2539 2540const char * 2541SSL_get_version(const SSL *s) 2542{ 2543 return ssl_version_string(s->version); 2544} 2545 2546SSL * 2547SSL_dup(SSL *s) 2548{ 2549 STACK_OF(X509_NAME) *sk; 2550 X509_NAME *xn; 2551 SSL *ret; 2552 int i; 2553 2554 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2555 return (NULL); 2556 2557 ret->version = s->version; 2558 ret->type = s->type; 2559 ret->method = s->method; 2560 2561 if (s->session != NULL) { 2562 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2563 SSL_copy_session_id(ret, s); 2564 } else { 2565 /* 2566 * No session has been established yet, so we have to expect 2567 * that s->cert or ret->cert will be changed later -- 2568 * they should not both point to the same object, 2569 * and thus we can't use SSL_copy_session_id. 2570 */ 2571 2572 ret->method->ssl_free(ret); 2573 ret->method = s->method; 2574 ret->method->ssl_new(ret); 2575 2576 if (s->cert != NULL) { 2577 if (ret->cert != NULL) { 2578 ssl_cert_free(ret->cert); 2579 } 2580 ret->cert = ssl_cert_dup(s->cert); 2581 if (ret->cert == NULL) 2582 goto err; 2583 } 2584 2585 SSL_set_session_id_context(ret, 2586 s->sid_ctx, s->sid_ctx_length); 2587 } 2588 2589 ret->options = s->options; 2590 ret->mode = s->mode; 2591 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2592 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2593 ret->msg_callback = s->msg_callback; 2594 ret->msg_callback_arg = s->msg_callback_arg; 2595 SSL_set_verify(ret, SSL_get_verify_mode(s), 2596 SSL_get_verify_callback(s)); 2597 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2598 ret->generate_session_id = s->generate_session_id; 2599 2600 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2601 2602 ret->debug = s->debug; 2603 2604 /* copy app data, a little dangerous perhaps */ 2605 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2606 &ret->ex_data, &s->ex_data)) 2607 goto err; 2608 2609 /* setup rbio, and wbio */ 2610 if (s->rbio != NULL) { 2611 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2612 goto err; 2613 } 2614 if (s->wbio != NULL) { 2615 if (s->wbio != s->rbio) { 2616 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2617 goto err; 2618 } else 2619 ret->wbio = ret->rbio; 2620 } 2621 ret->rwstate = s->rwstate; 2622 ret->in_handshake = s->in_handshake; 2623 ret->handshake_func = s->handshake_func; 2624 ret->server = s->server; 2625 ret->renegotiate = s->renegotiate; 2626 ret->new_session = s->new_session; 2627 ret->quiet_shutdown = s->quiet_shutdown; 2628 ret->shutdown = s->shutdown; 2629 /* SSL_dup does not really work at any state, though */ 2630 ret->state=s->state; 2631 ret->rstate = s->rstate; 2632 2633 /* 2634 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2635 * ret->init_off 2636 */ 2637 ret->init_num = 0; 2638 2639 ret->hit = s->hit; 2640 2641 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2642 2643 /* dup the cipher_list and cipher_list_by_id stacks */ 2644 if (s->cipher_list != NULL) { 2645 if ((ret->cipher_list = 2646 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2647 goto err; 2648 } 2649 if (s->cipher_list_by_id != NULL) { 2650 if ((ret->cipher_list_by_id = 2651 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2652 goto err; 2653 } 2654 2655 /* Dup the client_CA list */ 2656 if (s->client_CA != NULL) { 2657 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2658 ret->client_CA = sk; 2659 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2660 xn = sk_X509_NAME_value(sk, i); 2661 if (sk_X509_NAME_set(sk, i, 2662 X509_NAME_dup(xn)) == NULL) { 2663 X509_NAME_free(xn); 2664 goto err; 2665 } 2666 } 2667 } 2668 2669 if (0) { 2670err: 2671 if (ret != NULL) 2672 SSL_free(ret); 2673 ret = NULL; 2674 } 2675 return (ret); 2676} 2677 2678void 2679ssl_clear_cipher_ctx(SSL *s) 2680{ 2681 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2682 s->enc_read_ctx = NULL; 2683 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2684 s->enc_write_ctx = NULL; 2685 2686 if (s->aead_read_ctx != NULL) { 2687 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2688 free(s->aead_read_ctx); 2689 s->aead_read_ctx = NULL; 2690 } 2691 if (s->aead_write_ctx != NULL) { 2692 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2693 free(s->aead_write_ctx); 2694 s->aead_write_ctx = NULL; 2695 } 2696 2697} 2698 2699/* Fix this function so that it takes an optional type parameter */ 2700X509 * 2701SSL_get_certificate(const SSL *s) 2702{ 2703 if (s->cert != NULL) 2704 return (s->cert->key->x509); 2705 else 2706 return (NULL); 2707} 2708 2709/* Fix this function so that it takes an optional type parameter */ 2710EVP_PKEY * 2711SSL_get_privatekey(SSL *s) 2712{ 2713 if (s->cert != NULL) 2714 return (s->cert->key->privatekey); 2715 else 2716 return (NULL); 2717} 2718 2719const SSL_CIPHER * 2720SSL_get_current_cipher(const SSL *s) 2721{ 2722 if ((s->session != NULL) && (s->session->cipher != NULL)) 2723 return (s->session->cipher); 2724 return (NULL); 2725} 2726const void * 2727SSL_get_current_compression(SSL *s) 2728{ 2729 return (NULL); 2730} 2731 2732const void * 2733SSL_get_current_expansion(SSL *s) 2734{ 2735 return (NULL); 2736} 2737 2738int 2739ssl_init_wbio_buffer(SSL *s, int push) 2740{ 2741 BIO *bbio; 2742 2743 if (s->bbio == NULL) { 2744 bbio = BIO_new(BIO_f_buffer()); 2745 if (bbio == NULL) 2746 return (0); 2747 s->bbio = bbio; 2748 } else { 2749 bbio = s->bbio; 2750 if (s->bbio == s->wbio) 2751 s->wbio = BIO_pop(s->wbio); 2752 } 2753 (void)BIO_reset(bbio); 2754/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2755 if (!BIO_set_read_buffer_size(bbio, 1)) { 2756 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2757 ERR_R_BUF_LIB); 2758 return (0); 2759 } 2760 if (push) { 2761 if (s->wbio != bbio) 2762 s->wbio = BIO_push(bbio, s->wbio); 2763 } else { 2764 if (s->wbio == bbio) 2765 s->wbio = BIO_pop(bbio); 2766 } 2767 return (1); 2768} 2769 2770void 2771ssl_free_wbio_buffer(SSL *s) 2772{ 2773 if (s->bbio == NULL) 2774 return; 2775 2776 if (s->bbio == s->wbio) { 2777 /* remove buffering */ 2778 s->wbio = BIO_pop(s->wbio); 2779 } 2780 BIO_free(s->bbio); 2781 s->bbio = NULL; 2782} 2783 2784void 2785SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2786{ 2787 ctx->quiet_shutdown = mode; 2788} 2789 2790int 2791SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2792{ 2793 return (ctx->quiet_shutdown); 2794} 2795 2796void 2797SSL_set_quiet_shutdown(SSL *s, int mode) 2798{ 2799 s->quiet_shutdown = mode; 2800} 2801 2802int 2803SSL_get_quiet_shutdown(const SSL *s) 2804{ 2805 return (s->quiet_shutdown); 2806} 2807 2808void 2809SSL_set_shutdown(SSL *s, int mode) 2810{ 2811 s->shutdown = mode; 2812} 2813 2814int 2815SSL_get_shutdown(const SSL *s) 2816{ 2817 return (s->shutdown); 2818} 2819 2820int 2821SSL_version(const SSL *s) 2822{ 2823 return (s->version); 2824} 2825 2826SSL_CTX * 2827SSL_get_SSL_CTX(const SSL *ssl) 2828{ 2829 return (ssl->ctx); 2830} 2831 2832SSL_CTX * 2833SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2834{ 2835 if (ssl->ctx == ctx) 2836 return (ssl->ctx); 2837 if (ctx == NULL) 2838 ctx = ssl->initial_ctx; 2839 if (ssl->cert != NULL) 2840 ssl_cert_free(ssl->cert); 2841 ssl->cert = ssl_cert_dup(ctx->cert); 2842 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2843 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2844 ssl->ctx = ctx; 2845 return (ssl->ctx); 2846} 2847 2848int 2849SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2850{ 2851 return (X509_STORE_set_default_paths(ctx->cert_store)); 2852} 2853 2854int 2855SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2856 const char *CApath) 2857{ 2858 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2859} 2860 2861int 2862SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2863{ 2864 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2865} 2866 2867void 2868SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2869{ 2870 ssl->info_callback = cb; 2871} 2872 2873void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2874{ 2875 return (ssl->info_callback); 2876} 2877 2878int 2879SSL_state(const SSL *ssl) 2880{ 2881 return (ssl->state); 2882} 2883 2884void 2885SSL_set_state(SSL *ssl, int state) 2886{ 2887 ssl->state = state; 2888} 2889 2890void 2891SSL_set_verify_result(SSL *ssl, long arg) 2892{ 2893 ssl->verify_result = arg; 2894} 2895 2896long 2897SSL_get_verify_result(const SSL *ssl) 2898{ 2899 return (ssl->verify_result); 2900} 2901 2902int 2903SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2904 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2905{ 2906 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2907 new_func, dup_func, free_func)); 2908} 2909 2910int 2911SSL_set_ex_data(SSL *s, int idx, void *arg) 2912{ 2913 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2914} 2915 2916void * 2917SSL_get_ex_data(const SSL *s, int idx) 2918{ 2919 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2920} 2921 2922int 2923SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2924 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2925{ 2926 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2927 new_func, dup_func, free_func)); 2928} 2929 2930int 2931SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2932{ 2933 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2934} 2935 2936void * 2937SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2938{ 2939 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2940} 2941 2942int 2943ssl_ok(SSL *s) 2944{ 2945 return (1); 2946} 2947 2948X509_STORE * 2949SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2950{ 2951 return (ctx->cert_store); 2952} 2953 2954void 2955SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2956{ 2957 if (ctx->cert_store != NULL) 2958 X509_STORE_free(ctx->cert_store); 2959 ctx->cert_store = store; 2960} 2961 2962int 2963SSL_want(const SSL *s) 2964{ 2965 return (s->rwstate); 2966} 2967 2968void 2969SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2970 int keylength)) 2971{ 2972 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2973} 2974 2975void 2976SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2977 int keylength)) 2978{ 2979 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2980} 2981 2982void 2983SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2984 int keylength)) 2985{ 2986 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2987} 2988 2989void 2990SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2991 int keylength)) 2992{ 2993 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2994} 2995 2996void 2997SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2998 int is_export, int keylength)) 2999{ 3000 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3001 (void (*)(void))ecdh); 3002} 3003 3004void 3005SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3006 int keylength)) 3007{ 3008 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3009} 3010 3011 3012void 3013SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3014 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3015{ 3016 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3017 (void (*)(void))cb); 3018} 3019 3020void 3021SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3022 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3023{ 3024 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3025} 3026 3027/* 3028 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3029 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3030 * any. If EVP_MD pointer is passed, initializes ctx with this md 3031 * Returns newly allocated ctx; 3032 */ 3033EVP_MD_CTX * 3034ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3035{ 3036 ssl_clear_hash_ctx(hash); 3037 *hash = EVP_MD_CTX_create(); 3038 if (*hash != NULL && md != NULL) { 3039 if (!EVP_DigestInit_ex(*hash, md, NULL)) { 3040 ssl_clear_hash_ctx(hash); 3041 return (NULL); 3042 } 3043 } 3044 return (*hash); 3045} 3046 3047void 3048ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3049{ 3050 if (*hash) 3051 EVP_MD_CTX_destroy(*hash); 3052 *hash = NULL; 3053} 3054 3055void 3056SSL_set_debug(SSL *s, int debug) 3057{ 3058 s->debug = debug; 3059} 3060 3061int 3062SSL_cache_hit(SSL *s) 3063{ 3064 return (s->hit); 3065} 3066 3067IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3068