ssl_lib.c revision 1.96
1/* $OpenBSD: ssl_lib.c,v 1.96 2015/02/07 05:46:01 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/dh.h> 148#include <openssl/lhash.h> 149#include <openssl/objects.h> 150#include <openssl/ocsp.h> 151#include <openssl/x509v3.h> 152 153#ifndef OPENSSL_NO_ENGINE 154#include <openssl/engine.h> 155#endif 156 157const char *SSL_version_str = OPENSSL_VERSION_TEXT; 158 159SSL3_ENC_METHOD ssl3_undef_enc_method = { 160 /* 161 * Evil casts, but these functions are only called if there's a 162 * library bug. 163 */ 164 .enc = (int (*)(SSL *, int))ssl_undefined_function, 165 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 166 .setup_key_block = ssl_undefined_function, 167 .generate_master_secret = (int (*)(SSL *, unsigned char *, 168 unsigned char *, int))ssl_undefined_function, 169 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 170 .final_finish_mac = (int (*)(SSL *, const char*, int, 171 unsigned char *))ssl_undefined_function, 172 .finish_mac_length = 0, 173 .cert_verify_mac = (int (*)(SSL *, int, 174 unsigned char *))ssl_undefined_function, 175 .client_finished_label = NULL, 176 .client_finished_label_len = 0, 177 .server_finished_label = NULL, 178 .server_finished_label_len = 0, 179 .alert_value = (int (*)(int))ssl_undefined_function, 180 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 181 const char *, size_t, const unsigned char *, size_t, 182 int use_context))ssl_undefined_function, 183 .enc_flags = 0, 184}; 185 186int 187SSL_clear(SSL *s) 188{ 189 if (s->method == NULL) { 190 SSLerr(SSL_F_SSL_CLEAR, 191 SSL_R_NO_METHOD_SPECIFIED); 192 return (0); 193 } 194 195 if (ssl_clear_bad_session(s)) { 196 SSL_SESSION_free(s->session); 197 s->session = NULL; 198 } 199 200 s->error = 0; 201 s->hit = 0; 202 s->shutdown = 0; 203 204 if (s->renegotiate) { 205 SSLerr(SSL_F_SSL_CLEAR, 206 ERR_R_INTERNAL_ERROR); 207 return (0); 208 } 209 210 s->type = 0; 211 212 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 213 214 s->version = s->method->version; 215 s->client_version = s->version; 216 s->rwstate = SSL_NOTHING; 217 s->rstate = SSL_ST_READ_HEADER; 218 219 if (s->init_buf != NULL) { 220 BUF_MEM_free(s->init_buf); 221 s->init_buf = NULL; 222 } 223 224 ssl_clear_cipher_ctx(s); 225 ssl_clear_hash_ctx(&s->read_hash); 226 ssl_clear_hash_ctx(&s->write_hash); 227 228 s->first_packet = 0; 229 230 /* 231 * Check to see if we were changed into a different method, if 232 * so, revert back if we are not doing session-id reuse. 233 */ 234 if (!s->in_handshake && (s->session == NULL) && 235 (s->method != s->ctx->method)) { 236 s->method->ssl_free(s); 237 s->method = s->ctx->method; 238 if (!s->method->ssl_new(s)) 239 return (0); 240 } else 241 s->method->ssl_clear(s); 242 return (1); 243} 244 245/* Used to change an SSL_CTXs default SSL method type */ 246int 247SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 248{ 249 STACK_OF(SSL_CIPHER) *sk; 250 251 ctx->method = meth; 252 253 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 254 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 255 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 256 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 257 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 258 return (0); 259 } 260 return (1); 261} 262 263SSL * 264SSL_new(SSL_CTX *ctx) 265{ 266 SSL *s; 267 268 if (ctx == NULL) { 269 SSLerr(SSL_F_SSL_NEW, 270 SSL_R_NULL_SSL_CTX); 271 return (NULL); 272 } 273 if (ctx->method == NULL) { 274 SSLerr(SSL_F_SSL_NEW, 275 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 276 return (NULL); 277 } 278 279 s = calloc(1, sizeof(SSL)); 280 if (s == NULL) 281 goto err; 282 283 284 s->options = ctx->options; 285 s->mode = ctx->mode; 286 s->max_cert_list = ctx->max_cert_list; 287 288 if (ctx->cert != NULL) { 289 /* 290 * Earlier library versions used to copy the pointer to 291 * the CERT, not its contents; only when setting new 292 * parameters for the per-SSL copy, ssl_cert_new would be 293 * called (and the direct reference to the per-SSL_CTX 294 * settings would be lost, but those still were indirectly 295 * accessed for various purposes, and for that reason they 296 * used to be known as s->ctx->default_cert). 297 * Now we don't look at the SSL_CTX's CERT after having 298 * duplicated it once. 299 */ 300 s->cert = ssl_cert_dup(ctx->cert); 301 if (s->cert == NULL) 302 goto err; 303 } else 304 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 305 306 s->read_ahead = ctx->read_ahead; 307 s->msg_callback = ctx->msg_callback; 308 s->msg_callback_arg = ctx->msg_callback_arg; 309 s->verify_mode = ctx->verify_mode; 310 s->sid_ctx_length = ctx->sid_ctx_length; 311 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 312 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 313 s->verify_callback = ctx->default_verify_callback; 314 s->generate_session_id = ctx->generate_session_id; 315 316 s->param = X509_VERIFY_PARAM_new(); 317 if (!s->param) 318 goto err; 319 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 320 s->quiet_shutdown = ctx->quiet_shutdown; 321 s->max_send_fragment = ctx->max_send_fragment; 322 323 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 324 s->ctx = ctx; 325 s->tlsext_debug_cb = 0; 326 s->tlsext_debug_arg = NULL; 327 s->tlsext_ticket_expected = 0; 328 s->tlsext_status_type = -1; 329 s->tlsext_status_expected = 0; 330 s->tlsext_ocsp_ids = NULL; 331 s->tlsext_ocsp_exts = NULL; 332 s->tlsext_ocsp_resp = NULL; 333 s->tlsext_ocsp_resplen = -1; 334 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 335 s->initial_ctx = ctx; 336 s->next_proto_negotiated = NULL; 337 338 if (s->ctx->alpn_client_proto_list != NULL) { 339 s->alpn_client_proto_list = 340 malloc(s->ctx->alpn_client_proto_list_len); 341 if (s->alpn_client_proto_list == NULL) 342 goto err; 343 memcpy(s->alpn_client_proto_list, 344 s->ctx->alpn_client_proto_list, 345 s->ctx->alpn_client_proto_list_len); 346 s->alpn_client_proto_list_len = 347 s->ctx->alpn_client_proto_list_len; 348 } 349 350 s->verify_result = X509_V_OK; 351 352 s->method = ctx->method; 353 354 if (!s->method->ssl_new(s)) 355 goto err; 356 357 s->references = 1; 358 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 359 360 SSL_clear(s); 361 362 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 363 364 365 return (s); 366err: 367 if (s != NULL) { 368 if (s->cert != NULL) 369 ssl_cert_free(s->cert); 370 SSL_CTX_free(s->ctx); /* decrement reference count */ 371 free(s); 372 } 373 SSLerr(SSL_F_SSL_NEW, 374 ERR_R_MALLOC_FAILURE); 375 return (NULL); 376} 377 378int 379SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381{ 382 if (sid_ctx_len > sizeof ctx->sid_ctx) { 383 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 384 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 385 return (0); 386 } 387 ctx->sid_ctx_length = sid_ctx_len; 388 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 389 390 return (1); 391} 392 393int 394SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 395 unsigned int sid_ctx_len) 396{ 397 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 398 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 399 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 400 return (0); 401 } 402 ssl->sid_ctx_length = sid_ctx_len; 403 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 404 405 return (1); 406} 407 408int 409SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 410{ 411 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 412 ctx->generate_session_id = cb; 413 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 414 return (1); 415} 416 417int 418SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 419{ 420 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 421 ssl->generate_session_id = cb; 422 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 423 return (1); 424} 425 426int 427SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 428 unsigned int id_len) 429{ 430 /* 431 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 432 * shows how we can "construct" a session to give us the desired 433 * check - ie. to find if there's a session in the hash table 434 * that would conflict with any new session built out of this 435 * id/id_len and the ssl_version in use by this SSL. 436 */ 437 SSL_SESSION r, *p; 438 439 if (id_len > sizeof r.session_id) 440 return (0); 441 442 r.ssl_version = ssl->version; 443 r.session_id_length = id_len; 444 memcpy(r.session_id, id, id_len); 445 446 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 447 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 448 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 449 return (p != NULL); 450} 451 452int 453SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 454{ 455 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 456} 457 458int 459SSL_set_purpose(SSL *s, int purpose) 460{ 461 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 462} 463 464int 465SSL_CTX_set_trust(SSL_CTX *s, int trust) 466{ 467 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 468} 469 470int 471SSL_set_trust(SSL *s, int trust) 472{ 473 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 474} 475 476int 477SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 478{ 479 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 480} 481 482int 483SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 484{ 485 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 486} 487 488void 489SSL_free(SSL *s) 490{ 491 int i; 492 493 if (s == NULL) 494 return; 495 496 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 497 if (i > 0) 498 return; 499 500 if (s->param) 501 X509_VERIFY_PARAM_free(s->param); 502 503 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 504 505 if (s->bbio != NULL) { 506 /* If the buffering BIO is in place, pop it off */ 507 if (s->bbio == s->wbio) { 508 s->wbio = BIO_pop(s->wbio); 509 } 510 BIO_free(s->bbio); 511 s->bbio = NULL; 512 } 513 if (s->rbio != NULL) 514 BIO_free_all(s->rbio); 515 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 516 BIO_free_all(s->wbio); 517 518 if (s->init_buf != NULL) 519 BUF_MEM_free(s->init_buf); 520 521 /* add extra stuff */ 522 if (s->cipher_list != NULL) 523 sk_SSL_CIPHER_free(s->cipher_list); 524 if (s->cipher_list_by_id != NULL) 525 sk_SSL_CIPHER_free(s->cipher_list_by_id); 526 527 /* Make the next call work :-) */ 528 if (s->session != NULL) { 529 ssl_clear_bad_session(s); 530 SSL_SESSION_free(s->session); 531 } 532 533 ssl_clear_cipher_ctx(s); 534 ssl_clear_hash_ctx(&s->read_hash); 535 ssl_clear_hash_ctx(&s->write_hash); 536 537 if (s->cert != NULL) 538 ssl_cert_free(s->cert); 539 /* Free up if allocated */ 540 541 free(s->tlsext_hostname); 542 SSL_CTX_free(s->initial_ctx); 543 free(s->tlsext_ecpointformatlist); 544 free(s->tlsext_ellipticcurvelist); 545 if (s->tlsext_ocsp_exts) 546 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 547 X509_EXTENSION_free); 548 if (s->tlsext_ocsp_ids) 549 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 550 free(s->tlsext_ocsp_resp); 551 552 if (s->client_CA != NULL) 553 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 554 555 if (s->method != NULL) 556 s->method->ssl_free(s); 557 558 SSL_CTX_free(s->ctx); 559 560 561 free(s->next_proto_negotiated); 562 free(s->alpn_client_proto_list); 563 564#ifndef OPENSSL_NO_SRTP 565 if (s->srtp_profiles) 566 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 567#endif 568 569 free(s); 570} 571 572void 573SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 574{ 575 /* If the output buffering BIO is still in place, remove it */ 576 if (s->bbio != NULL) { 577 if (s->wbio == s->bbio) { 578 s->wbio = s->wbio->next_bio; 579 s->bbio->next_bio = NULL; 580 } 581 } 582 if ((s->rbio != NULL) && (s->rbio != rbio)) 583 BIO_free_all(s->rbio); 584 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 585 BIO_free_all(s->wbio); 586 s->rbio = rbio; 587 s->wbio = wbio; 588} 589 590BIO * 591SSL_get_rbio(const SSL *s) 592{ 593 return (s->rbio); 594} 595 596BIO * 597SSL_get_wbio(const SSL *s) 598{ 599 return (s->wbio); 600} 601 602int 603SSL_get_fd(const SSL *s) 604{ 605 return (SSL_get_rfd(s)); 606} 607 608int 609SSL_get_rfd(const SSL *s) 610{ 611 int ret = -1; 612 BIO *b, *r; 613 614 b = SSL_get_rbio(s); 615 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 616 if (r != NULL) 617 BIO_get_fd(r, &ret); 618 return (ret); 619} 620 621int 622SSL_get_wfd(const SSL *s) 623{ 624 int ret = -1; 625 BIO *b, *r; 626 627 b = SSL_get_wbio(s); 628 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 629 if (r != NULL) 630 BIO_get_fd(r, &ret); 631 return (ret); 632} 633 634int 635SSL_set_fd(SSL *s, int fd) 636{ 637 int ret = 0; 638 BIO *bio = NULL; 639 640 bio = BIO_new(BIO_s_socket()); 641 642 if (bio == NULL) { 643 SSLerr(SSL_F_SSL_SET_FD, 644 ERR_R_BUF_LIB); 645 goto err; 646 } 647 BIO_set_fd(bio, fd, BIO_NOCLOSE); 648 SSL_set_bio(s, bio, bio); 649 ret = 1; 650err: 651 return (ret); 652} 653 654int 655SSL_set_wfd(SSL *s, int fd) 656{ 657 int ret = 0; 658 BIO *bio = NULL; 659 660 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 661 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 662 bio = BIO_new(BIO_s_socket()); 663 664 if (bio == NULL) { 665 SSLerr(SSL_F_SSL_SET_WFD, 666 ERR_R_BUF_LIB); 667 goto err; 668 } 669 BIO_set_fd(bio, fd, BIO_NOCLOSE); 670 SSL_set_bio(s, SSL_get_rbio(s), bio); 671 } else 672 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 673 ret = 1; 674err: 675 return (ret); 676} 677 678int 679SSL_set_rfd(SSL *s, int fd) 680{ 681 int ret = 0; 682 BIO *bio = NULL; 683 684 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 685 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 686 bio = BIO_new(BIO_s_socket()); 687 688 if (bio == NULL) { 689 SSLerr(SSL_F_SSL_SET_RFD, 690 ERR_R_BUF_LIB); 691 goto err; 692 } 693 BIO_set_fd(bio, fd, BIO_NOCLOSE); 694 SSL_set_bio(s, bio, SSL_get_wbio(s)); 695 } else 696 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 697 ret = 1; 698err: 699 return (ret); 700} 701 702 703/* return length of latest Finished message we sent, copy to 'buf' */ 704size_t 705SSL_get_finished(const SSL *s, void *buf, size_t count) 706{ 707 size_t ret = 0; 708 709 if (s->s3 != NULL) { 710 ret = s->s3->tmp.finish_md_len; 711 if (count > ret) 712 count = ret; 713 memcpy(buf, s->s3->tmp.finish_md, count); 714 } 715 return (ret); 716} 717 718/* return length of latest Finished message we expected, copy to 'buf' */ 719size_t 720SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 721{ 722 size_t ret = 0; 723 724 if (s->s3 != NULL) { 725 ret = s->s3->tmp.peer_finish_md_len; 726 if (count > ret) 727 count = ret; 728 memcpy(buf, s->s3->tmp.peer_finish_md, count); 729 } 730 return (ret); 731} 732 733 734int 735SSL_get_verify_mode(const SSL *s) 736{ 737 return (s->verify_mode); 738} 739 740int 741SSL_get_verify_depth(const SSL *s) 742{ 743 return (X509_VERIFY_PARAM_get_depth(s->param)); 744} 745 746int 747(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 748{ 749 return (s->verify_callback); 750} 751 752int 753SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 754{ 755 return (ctx->verify_mode); 756} 757 758int 759SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 760{ 761 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 762} 763 764int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 765{ 766 return (ctx->default_verify_callback); 767} 768 769void 770SSL_set_verify(SSL *s, int mode, 771 int (*callback)(int ok, X509_STORE_CTX *ctx)) 772{ 773 s->verify_mode = mode; 774 if (callback != NULL) 775 s->verify_callback = callback; 776} 777 778void 779SSL_set_verify_depth(SSL *s, int depth) 780{ 781 X509_VERIFY_PARAM_set_depth(s->param, depth); 782} 783 784void 785SSL_set_read_ahead(SSL *s, int yes) 786{ 787 s->read_ahead = yes; 788} 789 790int 791SSL_get_read_ahead(const SSL *s) 792{ 793 return (s->read_ahead); 794} 795 796int 797SSL_pending(const SSL *s) 798{ 799 /* 800 * SSL_pending cannot work properly if read-ahead is enabled 801 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 802 * and it is impossible to fix since SSL_pending cannot report 803 * errors that may be observed while scanning the new data. 804 * (Note that SSL_pending() is often used as a boolean value, 805 * so we'd better not return -1.) 806 */ 807 return (s->method->ssl_pending(s)); 808} 809 810X509 * 811SSL_get_peer_certificate(const SSL *s) 812{ 813 X509 *r; 814 815 if ((s == NULL) || (s->session == NULL)) 816 r = NULL; 817 else 818 r = s->session->peer; 819 820 if (r == NULL) 821 return (r); 822 823 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 824 825 return (r); 826} 827 828STACK_OF(X509) * 829SSL_get_peer_cert_chain(const SSL *s) 830{ 831 STACK_OF(X509) *r; 832 833 if ((s == NULL) || (s->session == NULL) || 834 (s->session->sess_cert == NULL)) 835 r = NULL; 836 else 837 r = s->session->sess_cert->cert_chain; 838 839 /* 840 * If we are a client, cert_chain includes the peer's own 841 * certificate; 842 * if we are a server, it does not. 843 */ 844 return (r); 845} 846 847/* 848 * Now in theory, since the calling process own 't' it should be safe to 849 * modify. We need to be able to read f without being hassled 850 */ 851void 852SSL_copy_session_id(SSL *t, const SSL *f) 853{ 854 CERT *tmp; 855 856 /* Do we need to to SSL locking? */ 857 SSL_set_session(t, SSL_get_session(f)); 858 859 /* 860 * What if we are setup as SSLv2 but want to talk SSLv3 or 861 * vice-versa. 862 */ 863 if (t->method != f->method) { 864 t->method->ssl_free(t); /* cleanup current */ 865 t->method=f->method; /* change method */ 866 t->method->ssl_new(t); /* setup new */ 867 } 868 869 tmp = t->cert; 870 if (f->cert != NULL) { 871 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 872 t->cert = f->cert; 873 } else 874 t->cert = NULL; 875 if (tmp != NULL) 876 ssl_cert_free(tmp); 877 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 878} 879 880/* Fix this so it checks all the valid key/cert options */ 881int 882SSL_CTX_check_private_key(const SSL_CTX *ctx) 883{ 884 if ((ctx == NULL) || (ctx->cert == NULL) || 885 (ctx->cert->key->x509 == NULL)) { 886 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 887 SSL_R_NO_CERTIFICATE_ASSIGNED); 888 return (0); 889 } 890 if (ctx->cert->key->privatekey == NULL) { 891 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 892 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 893 return (0); 894 } 895 return (X509_check_private_key(ctx->cert->key->x509, 896 ctx->cert->key->privatekey)); 897} 898 899/* Fix this function so that it takes an optional type parameter */ 900int 901SSL_check_private_key(const SSL *ssl) 902{ 903 if (ssl == NULL) { 904 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 905 ERR_R_PASSED_NULL_PARAMETER); 906 return (0); 907 } 908 if (ssl->cert == NULL) { 909 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 910 SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->x509 == NULL) { 914 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 915 SSL_R_NO_CERTIFICATE_ASSIGNED); 916 return (0); 917 } 918 if (ssl->cert->key->privatekey == NULL) { 919 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 920 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 921 return (0); 922 } 923 return (X509_check_private_key(ssl->cert->key->x509, 924 ssl->cert->key->privatekey)); 925} 926 927int 928SSL_accept(SSL *s) 929{ 930 if (s->handshake_func == 0) 931 SSL_set_accept_state(s); /* Not properly initialized yet */ 932 933 return (s->method->ssl_accept(s)); 934} 935 936int 937SSL_connect(SSL *s) 938{ 939 if (s->handshake_func == 0) 940 SSL_set_connect_state(s); /* Not properly initialized yet */ 941 942 return (s->method->ssl_connect(s)); 943} 944 945long 946SSL_get_default_timeout(const SSL *s) 947{ 948 return (s->method->get_timeout()); 949} 950 951int 952SSL_read(SSL *s, void *buf, int num) 953{ 954 if (s->handshake_func == 0) { 955 SSLerr(SSL_F_SSL_READ, 956 SSL_R_UNINITIALIZED); 957 return (-1); 958 } 959 960 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 961 s->rwstate = SSL_NOTHING; 962 return (0); 963 } 964 return (s->method->ssl_read(s, buf, num)); 965} 966 967int 968SSL_peek(SSL *s, void *buf, int num) 969{ 970 if (s->handshake_func == 0) { 971 SSLerr(SSL_F_SSL_PEEK, 972 SSL_R_UNINITIALIZED); 973 return (-1); 974 } 975 976 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 977 return (0); 978 } 979 return (s->method->ssl_peek(s, buf, num)); 980} 981 982int 983SSL_write(SSL *s, const void *buf, int num) 984{ 985 if (s->handshake_func == 0) { 986 SSLerr(SSL_F_SSL_WRITE, 987 SSL_R_UNINITIALIZED); 988 return (-1); 989 } 990 991 if (s->shutdown & SSL_SENT_SHUTDOWN) { 992 s->rwstate = SSL_NOTHING; 993 SSLerr(SSL_F_SSL_WRITE, 994 SSL_R_PROTOCOL_IS_SHUTDOWN); 995 return (-1); 996 } 997 return (s->method->ssl_write(s, buf, num)); 998} 999 1000int 1001SSL_shutdown(SSL *s) 1002{ 1003 /* 1004 * Note that this function behaves differently from what one might 1005 * expect. Return values are 0 for no success (yet), 1006 * 1 for success; but calling it once is usually not enough, 1007 * even if blocking I/O is used (see ssl3_shutdown). 1008 */ 1009 1010 if (s->handshake_func == 0) { 1011 SSLerr(SSL_F_SSL_SHUTDOWN, 1012 SSL_R_UNINITIALIZED); 1013 return (-1); 1014 } 1015 1016 if ((s != NULL) && !SSL_in_init(s)) 1017 return (s->method->ssl_shutdown(s)); 1018 else 1019 return (1); 1020} 1021 1022int 1023SSL_renegotiate(SSL *s) 1024{ 1025 if (s->renegotiate == 0) 1026 s->renegotiate = 1; 1027 1028 s->new_session = 1; 1029 1030 return (s->method->ssl_renegotiate(s)); 1031} 1032 1033int 1034SSL_renegotiate_abbreviated(SSL *s) 1035{ 1036 if (s->renegotiate == 0) 1037 s->renegotiate = 1; 1038 1039 s->new_session = 0; 1040 1041 return (s->method->ssl_renegotiate(s)); 1042} 1043 1044int 1045SSL_renegotiate_pending(SSL *s) 1046{ 1047 /* 1048 * Becomes true when negotiation is requested; 1049 * false again once a handshake has finished. 1050 */ 1051 return (s->renegotiate != 0); 1052} 1053 1054long 1055SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1056{ 1057 long l; 1058 1059 switch (cmd) { 1060 case SSL_CTRL_GET_READ_AHEAD: 1061 return (s->read_ahead); 1062 case SSL_CTRL_SET_READ_AHEAD: 1063 l = s->read_ahead; 1064 s->read_ahead = larg; 1065 return (l); 1066 1067 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1068 s->msg_callback_arg = parg; 1069 return (1); 1070 1071 case SSL_CTRL_OPTIONS: 1072 return (s->options|=larg); 1073 case SSL_CTRL_CLEAR_OPTIONS: 1074 return (s->options&=~larg); 1075 case SSL_CTRL_MODE: 1076 return (s->mode|=larg); 1077 case SSL_CTRL_CLEAR_MODE: 1078 return (s->mode &=~larg); 1079 case SSL_CTRL_GET_MAX_CERT_LIST: 1080 return (s->max_cert_list); 1081 case SSL_CTRL_SET_MAX_CERT_LIST: 1082 l = s->max_cert_list; 1083 s->max_cert_list = larg; 1084 return (l); 1085 case SSL_CTRL_SET_MTU: 1086#ifndef OPENSSL_NO_DTLS1 1087 if (larg < (long)dtls1_min_mtu()) 1088 return (0); 1089#endif 1090 if (SSL_IS_DTLS(s)) { 1091 s->d1->mtu = larg; 1092 return (larg); 1093 } 1094 return (0); 1095 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1096 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1097 return (0); 1098 s->max_send_fragment = larg; 1099 return (1); 1100 case SSL_CTRL_GET_RI_SUPPORT: 1101 if (s->s3) 1102 return (s->s3->send_connection_binding); 1103 else return (0); 1104 default: 1105 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1106 } 1107} 1108 1109long 1110SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1111{ 1112 switch (cmd) { 1113 case SSL_CTRL_SET_MSG_CALLBACK: 1114 s->msg_callback = (void (*)(int write_p, int version, 1115 int content_type, const void *buf, size_t len, 1116 SSL *ssl, void *arg))(fp); 1117 return (1); 1118 1119 default: 1120 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1121 } 1122} 1123 1124LHASH_OF(SSL_SESSION) * 1125SSL_CTX_sessions(SSL_CTX *ctx) 1126{ 1127 return (ctx->sessions); 1128} 1129 1130long 1131SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1132{ 1133 long l; 1134 1135 switch (cmd) { 1136 case SSL_CTRL_GET_READ_AHEAD: 1137 return (ctx->read_ahead); 1138 case SSL_CTRL_SET_READ_AHEAD: 1139 l = ctx->read_ahead; 1140 ctx->read_ahead = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1144 ctx->msg_callback_arg = parg; 1145 return (1); 1146 1147 case SSL_CTRL_GET_MAX_CERT_LIST: 1148 return (ctx->max_cert_list); 1149 case SSL_CTRL_SET_MAX_CERT_LIST: 1150 l = ctx->max_cert_list; 1151 ctx->max_cert_list = larg; 1152 return (l); 1153 1154 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1155 l = ctx->session_cache_size; 1156 ctx->session_cache_size = larg; 1157 return (l); 1158 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1159 return (ctx->session_cache_size); 1160 case SSL_CTRL_SET_SESS_CACHE_MODE: 1161 l = ctx->session_cache_mode; 1162 ctx->session_cache_mode = larg; 1163 return (l); 1164 case SSL_CTRL_GET_SESS_CACHE_MODE: 1165 return (ctx->session_cache_mode); 1166 1167 case SSL_CTRL_SESS_NUMBER: 1168 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1169 case SSL_CTRL_SESS_CONNECT: 1170 return (ctx->stats.sess_connect); 1171 case SSL_CTRL_SESS_CONNECT_GOOD: 1172 return (ctx->stats.sess_connect_good); 1173 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1174 return (ctx->stats.sess_connect_renegotiate); 1175 case SSL_CTRL_SESS_ACCEPT: 1176 return (ctx->stats.sess_accept); 1177 case SSL_CTRL_SESS_ACCEPT_GOOD: 1178 return (ctx->stats.sess_accept_good); 1179 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1180 return (ctx->stats.sess_accept_renegotiate); 1181 case SSL_CTRL_SESS_HIT: 1182 return (ctx->stats.sess_hit); 1183 case SSL_CTRL_SESS_CB_HIT: 1184 return (ctx->stats.sess_cb_hit); 1185 case SSL_CTRL_SESS_MISSES: 1186 return (ctx->stats.sess_miss); 1187 case SSL_CTRL_SESS_TIMEOUTS: 1188 return (ctx->stats.sess_timeout); 1189 case SSL_CTRL_SESS_CACHE_FULL: 1190 return (ctx->stats.sess_cache_full); 1191 case SSL_CTRL_OPTIONS: 1192 return (ctx->options|=larg); 1193 case SSL_CTRL_CLEAR_OPTIONS: 1194 return (ctx->options&=~larg); 1195 case SSL_CTRL_MODE: 1196 return (ctx->mode|=larg); 1197 case SSL_CTRL_CLEAR_MODE: 1198 return (ctx->mode&=~larg); 1199 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1200 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1201 return (0); 1202 ctx->max_send_fragment = larg; 1203 return (1); 1204 default: 1205 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1206 } 1207} 1208 1209long 1210SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1211{ 1212 switch (cmd) { 1213 case SSL_CTRL_SET_MSG_CALLBACK: 1214 ctx->msg_callback = (void (*)(int write_p, int version, 1215 int content_type, const void *buf, size_t len, SSL *ssl, 1216 void *arg))(fp); 1217 return (1); 1218 1219 default: 1220 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1221 } 1222} 1223 1224int 1225ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1226{ 1227 long l; 1228 1229 l = a->id - b->id; 1230 if (l == 0L) 1231 return (0); 1232 else 1233 return ((l > 0) ? 1:-1); 1234} 1235 1236int 1237ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1238 const SSL_CIPHER * const *bp) 1239{ 1240 long l; 1241 1242 l = (*ap)->id - (*bp)->id; 1243 if (l == 0L) 1244 return (0); 1245 else 1246 return ((l > 0) ? 1:-1); 1247} 1248 1249/* 1250 * Return a STACK of the ciphers available for the SSL and in order of 1251 * preference. 1252 */ 1253STACK_OF(SSL_CIPHER) * 1254SSL_get_ciphers(const SSL *s) 1255{ 1256 if (s != NULL) { 1257 if (s->cipher_list != NULL) { 1258 return (s->cipher_list); 1259 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1260 return (s->ctx->cipher_list); 1261 } 1262 } 1263 return (NULL); 1264} 1265 1266/* 1267 * Return a STACK of the ciphers available for the SSL and in order of 1268 * algorithm id. 1269 */ 1270STACK_OF(SSL_CIPHER) * 1271ssl_get_ciphers_by_id(SSL *s) 1272{ 1273 if (s != NULL) { 1274 if (s->cipher_list_by_id != NULL) { 1275 return (s->cipher_list_by_id); 1276 } else if ((s->ctx != NULL) && 1277 (s->ctx->cipher_list_by_id != NULL)) { 1278 return (s->ctx->cipher_list_by_id); 1279 } 1280 } 1281 return (NULL); 1282} 1283 1284/* The old interface to get the same thing as SSL_get_ciphers(). */ 1285const char * 1286SSL_get_cipher_list(const SSL *s, int n) 1287{ 1288 SSL_CIPHER *c; 1289 STACK_OF(SSL_CIPHER) *sk; 1290 1291 if (s == NULL) 1292 return (NULL); 1293 sk = SSL_get_ciphers(s); 1294 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1295 return (NULL); 1296 c = sk_SSL_CIPHER_value(sk, n); 1297 if (c == NULL) 1298 return (NULL); 1299 return (c->name); 1300} 1301 1302/* Specify the ciphers to be used by default by the SSL_CTX. */ 1303int 1304SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1305{ 1306 STACK_OF(SSL_CIPHER) *sk; 1307 1308 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1309 &ctx->cipher_list_by_id, str); 1310 /* 1311 * ssl_create_cipher_list may return an empty stack if it 1312 * was unable to find a cipher matching the given rule string 1313 * (for example if the rule string specifies a cipher which 1314 * has been disabled). This is not an error as far as 1315 * ssl_create_cipher_list is concerned, and hence 1316 * ctx->cipher_list and ctx->cipher_list_by_id has been 1317 * updated. 1318 */ 1319 if (sk == NULL) 1320 return (0); 1321 else if (sk_SSL_CIPHER_num(sk) == 0) { 1322 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1323 SSL_R_NO_CIPHER_MATCH); 1324 return (0); 1325 } 1326 return (1); 1327} 1328 1329/* Specify the ciphers to be used by the SSL. */ 1330int 1331SSL_set_cipher_list(SSL *s, const char *str) 1332{ 1333 STACK_OF(SSL_CIPHER) *sk; 1334 1335 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1336 &s->cipher_list_by_id, str); 1337 /* see comment in SSL_CTX_set_cipher_list */ 1338 if (sk == NULL) 1339 return (0); 1340 else if (sk_SSL_CIPHER_num(sk) == 0) { 1341 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1342 SSL_R_NO_CIPHER_MATCH); 1343 return (0); 1344 } 1345 return (1); 1346} 1347 1348/* works well for SSLv2, not so good for SSLv3 */ 1349char * 1350SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1351{ 1352 char *end; 1353 STACK_OF(SSL_CIPHER) *sk; 1354 SSL_CIPHER *c; 1355 size_t curlen = 0; 1356 int i; 1357 1358 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1359 (len < 2)) 1360 return (NULL); 1361 1362 sk = s->session->ciphers; 1363 buf[0] = '\0'; 1364 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1365 c = sk_SSL_CIPHER_value(sk, i); 1366 end = buf + curlen; 1367 if (strlcat(buf, c->name, len) >= len || 1368 (curlen = strlcat(buf, ":", len)) >= len) { 1369 /* remove truncated cipher from list */ 1370 *end = '\0'; 1371 break; 1372 } 1373 } 1374 /* remove trailing colon */ 1375 if ((end = strrchr(buf, ':')) != NULL) 1376 *end = '\0'; 1377 return (buf); 1378} 1379 1380int 1381ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1382{ 1383 int i; 1384 SSL_CIPHER *c; 1385 unsigned char *q; 1386 1387 if (sk == NULL) 1388 return (0); 1389 q = p; 1390 1391 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1392 c = sk_SSL_CIPHER_value(sk, i); 1393 1394 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1395 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1396 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1397 continue; 1398 1399 s2n(ssl3_cipher_get_value(c), p); 1400 } 1401 1402 /* 1403 * If p == q, no ciphers and caller indicates an error. Otherwise 1404 * add SCSV if not renegotiating. 1405 */ 1406 if (p != q && !s->renegotiate) { 1407 static SSL_CIPHER scsv = { 1408 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1409 }; 1410 s2n(ssl3_cipher_get_value(&scsv), p); 1411 } 1412 1413 return (p - q); 1414} 1415 1416STACK_OF(SSL_CIPHER) * 1417ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1418 STACK_OF(SSL_CIPHER) **skp) 1419{ 1420 const SSL_CIPHER *c; 1421 STACK_OF(SSL_CIPHER) *sk; 1422 int i; 1423 uint16_t cipher_value; 1424 1425 if (s->s3) 1426 s->s3->send_connection_binding = 0; 1427 1428 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1429 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1430 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1431 return (NULL); 1432 } 1433 if (skp == NULL || *skp == NULL) { 1434 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1435 if (sk == NULL) 1436 goto err; 1437 } else { 1438 sk = *skp; 1439 sk_SSL_CIPHER_zero(sk); 1440 } 1441 1442 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1443 n2s(p, cipher_value); 1444 1445 /* Check for SCSV */ 1446 if (s->s3 && (SSL3_CK_ID | cipher_value) == SSL3_CK_SCSV) { 1447 /* SCSV is fatal if renegotiating. */ 1448 if (s->renegotiate) { 1449 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1450 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1451 ssl3_send_alert(s, SSL3_AL_FATAL, 1452 SSL_AD_HANDSHAKE_FAILURE); 1453 1454 goto err; 1455 } 1456 s->s3->send_connection_binding = 1; 1457 continue; 1458 } 1459 1460 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1461 if (!sk_SSL_CIPHER_push(sk, c)) { 1462 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1463 ERR_R_MALLOC_FAILURE); 1464 goto err; 1465 } 1466 } 1467 } 1468 1469 if (skp != NULL) 1470 *skp = sk; 1471 return (sk); 1472 1473err: 1474 if (skp == NULL || *skp == NULL) 1475 sk_SSL_CIPHER_free(sk); 1476 return (NULL); 1477} 1478 1479 1480/* 1481 * Return a servername extension value if provided in Client Hello, or NULL. 1482 * So far, only host_name types are defined (RFC 3546). 1483 */ 1484const char * 1485SSL_get_servername(const SSL *s, const int type) 1486{ 1487 if (type != TLSEXT_NAMETYPE_host_name) 1488 return (NULL); 1489 1490 return (s->session && !s->tlsext_hostname ? 1491 s->session->tlsext_hostname : 1492 s->tlsext_hostname); 1493} 1494 1495int 1496SSL_get_servername_type(const SSL *s) 1497{ 1498 if (s->session && 1499 (!s->tlsext_hostname ? 1500 s->session->tlsext_hostname : s->tlsext_hostname)) 1501 return (TLSEXT_NAMETYPE_host_name); 1502 return (-1); 1503} 1504 1505/* 1506 * SSL_select_next_proto implements the standard protocol selection. It is 1507 * expected that this function is called from the callback set by 1508 * SSL_CTX_set_next_proto_select_cb. 1509 * 1510 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1511 * strings. The length byte itself is not included in the length. A byte 1512 * string of length 0 is invalid. No byte string may be truncated. 1513 * 1514 * The current, but experimental algorithm for selecting the protocol is: 1515 * 1516 * 1) If the server doesn't support NPN then this is indicated to the 1517 * callback. In this case, the client application has to abort the connection 1518 * or have a default application level protocol. 1519 * 1520 * 2) If the server supports NPN, but advertises an empty list then the 1521 * client selects the first protcol in its list, but indicates via the 1522 * API that this fallback case was enacted. 1523 * 1524 * 3) Otherwise, the client finds the first protocol in the server's list 1525 * that it supports and selects this protocol. This is because it's 1526 * assumed that the server has better information about which protocol 1527 * a client should use. 1528 * 1529 * 4) If the client doesn't support any of the server's advertised 1530 * protocols, then this is treated the same as case 2. 1531 * 1532 * It returns either 1533 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1534 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1535 */ 1536int 1537SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1538 const unsigned char *server, unsigned int server_len, 1539 const unsigned char *client, unsigned int client_len) 1540{ 1541 unsigned int i, j; 1542 const unsigned char *result; 1543 int status = OPENSSL_NPN_UNSUPPORTED; 1544 1545 /* 1546 * For each protocol in server preference order, 1547 * see if we support it. 1548 */ 1549 for (i = 0; i < server_len; ) { 1550 for (j = 0; j < client_len; ) { 1551 if (server[i] == client[j] && 1552 memcmp(&server[i + 1], 1553 &client[j + 1], server[i]) == 0) { 1554 /* We found a match */ 1555 result = &server[i]; 1556 status = OPENSSL_NPN_NEGOTIATED; 1557 goto found; 1558 } 1559 j += client[j]; 1560 j++; 1561 } 1562 i += server[i]; 1563 i++; 1564 } 1565 1566 /* There's no overlap between our protocols and the server's list. */ 1567 result = client; 1568 status = OPENSSL_NPN_NO_OVERLAP; 1569 1570found: 1571 *out = (unsigned char *) result + 1; 1572 *outlen = result[0]; 1573 return (status); 1574} 1575 1576/* 1577 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1578 * requested protocol for this connection and returns 0. If the client didn't 1579 * request any protocol, then *data is set to NULL. 1580 * 1581 * Note that the client can request any protocol it chooses. The value returned 1582 * from this function need not be a member of the list of supported protocols 1583 * provided by the callback. 1584 */ 1585void 1586SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1587 unsigned *len) 1588{ 1589 *data = s->next_proto_negotiated; 1590 if (!*data) { 1591 *len = 0; 1592 } else { 1593 *len = s->next_proto_negotiated_len; 1594 } 1595} 1596 1597/* 1598 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1599 * TLS server needs a list of supported protocols for Next Protocol 1600 * Negotiation. The returned list must be in wire format. The list is returned 1601 * by setting |out| to point to it and |outlen| to its length. This memory will 1602 * not be modified, but one should assume that the SSL* keeps a reference to 1603 * it. 1604 * 1605 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1606 * Otherwise, no such extension will be included in the ServerHello. 1607 */ 1608void 1609SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1610 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1611{ 1612 ctx->next_protos_advertised_cb = cb; 1613 ctx->next_protos_advertised_cb_arg = arg; 1614} 1615 1616/* 1617 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1618 * client needs to select a protocol from the server's provided list. |out| 1619 * must be set to point to the selected protocol (which may be within |in|). 1620 * The length of the protocol name must be written into |outlen|. The server's 1621 * advertised protocols are provided in |in| and |inlen|. The callback can 1622 * assume that |in| is syntactically valid. 1623 * 1624 * The client must select a protocol. It is fatal to the connection if this 1625 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1626 */ 1627void 1628SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1629 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1630 unsigned int inlen, void *arg), void *arg) 1631{ 1632 ctx->next_proto_select_cb = cb; 1633 ctx->next_proto_select_cb_arg = arg; 1634} 1635 1636/* 1637 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1638 * protocols, which must be in wire-format (i.e. a series of non-empty, 1639 * 8-bit length-prefixed strings). Returns 0 on success. 1640 */ 1641int 1642SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1643 unsigned int protos_len) 1644{ 1645 free(ctx->alpn_client_proto_list); 1646 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1647 return (1); 1648 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1649 ctx->alpn_client_proto_list_len = protos_len; 1650 1651 return (0); 1652} 1653 1654/* 1655 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1656 * protocols, which must be in wire-format (i.e. a series of non-empty, 1657 * 8-bit length-prefixed strings). Returns 0 on success. 1658 */ 1659int 1660SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1661 unsigned int protos_len) 1662{ 1663 free(ssl->alpn_client_proto_list); 1664 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1665 return (1); 1666 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1667 ssl->alpn_client_proto_list_len = protos_len; 1668 1669 return (0); 1670} 1671 1672/* 1673 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1674 * ClientHello processing in order to select an ALPN protocol from the 1675 * client's list of offered protocols. 1676 */ 1677void 1678SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1679 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1680 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1681{ 1682 ctx->alpn_select_cb = cb; 1683 ctx->alpn_select_cb_arg = arg; 1684} 1685 1686/* 1687 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1688 * it sets data to point to len bytes of protocol name (not including the 1689 * leading length-prefix byte). If the server didn't respond with* a negotiated 1690 * protocol then len will be zero. 1691 */ 1692void 1693SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1694 unsigned *len) 1695{ 1696 *data = NULL; 1697 *len = 0; 1698 1699 if (ssl->s3 != NULL) { 1700 *data = ssl->s3->alpn_selected; 1701 *len = ssl->s3->alpn_selected_len; 1702 } 1703} 1704 1705int 1706SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1707 const char *label, size_t llen, const unsigned char *p, size_t plen, 1708 int use_context) 1709{ 1710 if (s->version < TLS1_VERSION) 1711 return (-1); 1712 1713 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1714 label, llen, p, plen, use_context)); 1715} 1716 1717static unsigned long 1718ssl_session_hash(const SSL_SESSION *a) 1719{ 1720 unsigned long l; 1721 1722 l = (unsigned long) 1723 ((unsigned int) a->session_id[0] )| 1724 ((unsigned int) a->session_id[1]<< 8L)| 1725 ((unsigned long)a->session_id[2]<<16L)| 1726 ((unsigned long)a->session_id[3]<<24L); 1727 return (l); 1728} 1729 1730/* 1731 * NB: If this function (or indeed the hash function which uses a sort of 1732 * coarser function than this one) is changed, ensure 1733 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1734 * able to construct an SSL_SESSION that will collide with any existing session 1735 * with a matching session ID. 1736 */ 1737static int 1738ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1739{ 1740 if (a->ssl_version != b->ssl_version) 1741 return (1); 1742 if (a->session_id_length != b->session_id_length) 1743 return (1); 1744 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1745 return (1); 1746 return (0); 1747} 1748 1749/* 1750 * These wrapper functions should remain rather than redeclaring 1751 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1752 * variable. The reason is that the functions aren't static, they're exposed via 1753 * ssl.h. 1754 */ 1755static 1756IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1757static 1758IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1759 1760SSL_CTX * 1761SSL_CTX_new(const SSL_METHOD *meth) 1762{ 1763 SSL_CTX *ret = NULL; 1764 1765 if (meth == NULL) { 1766 SSLerr(SSL_F_SSL_CTX_NEW, 1767 SSL_R_NULL_SSL_METHOD_PASSED); 1768 return (NULL); 1769 } 1770 1771 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1772 SSLerr(SSL_F_SSL_CTX_NEW, 1773 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1774 goto err; 1775 } 1776 ret = calloc(1, sizeof(SSL_CTX)); 1777 if (ret == NULL) 1778 goto err; 1779 1780 ret->method = meth; 1781 1782 ret->cert_store = NULL; 1783 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1784 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1785 ret->session_cache_head = NULL; 1786 ret->session_cache_tail = NULL; 1787 1788 /* We take the system default */ 1789 ret->session_timeout = meth->get_timeout(); 1790 1791 ret->new_session_cb = 0; 1792 ret->remove_session_cb = 0; 1793 ret->get_session_cb = 0; 1794 ret->generate_session_id = 0; 1795 1796 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1797 1798 ret->references = 1; 1799 ret->quiet_shutdown = 0; 1800 1801 ret->info_callback = NULL; 1802 1803 ret->app_verify_callback = 0; 1804 ret->app_verify_arg = NULL; 1805 1806 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1807 ret->read_ahead = 0; 1808 ret->msg_callback = 0; 1809 ret->msg_callback_arg = NULL; 1810 ret->verify_mode = SSL_VERIFY_NONE; 1811 ret->sid_ctx_length = 0; 1812 ret->default_verify_callback = NULL; 1813 if ((ret->cert = ssl_cert_new()) == NULL) 1814 goto err; 1815 1816 ret->default_passwd_callback = 0; 1817 ret->default_passwd_callback_userdata = NULL; 1818 ret->client_cert_cb = 0; 1819 ret->app_gen_cookie_cb = 0; 1820 ret->app_verify_cookie_cb = 0; 1821 1822 ret->sessions = lh_SSL_SESSION_new(); 1823 if (ret->sessions == NULL) 1824 goto err; 1825 ret->cert_store = X509_STORE_new(); 1826 if (ret->cert_store == NULL) 1827 goto err; 1828 1829 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1830 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1831 if (ret->cipher_list == NULL || 1832 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1833 SSLerr(SSL_F_SSL_CTX_NEW, 1834 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1835 goto err2; 1836 } 1837 1838 ret->param = X509_VERIFY_PARAM_new(); 1839 if (!ret->param) 1840 goto err; 1841 1842 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1843 SSLerr(SSL_F_SSL_CTX_NEW, 1844 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1845 goto err2; 1846 } 1847 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1848 SSLerr(SSL_F_SSL_CTX_NEW, 1849 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1850 goto err2; 1851 } 1852 1853 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1854 goto err; 1855 1856 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1857 1858 ret->extra_certs = NULL; 1859 1860 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1861 1862 ret->tlsext_servername_callback = 0; 1863 ret->tlsext_servername_arg = NULL; 1864 1865 /* Setup RFC4507 ticket keys */ 1866 arc4random_buf(ret->tlsext_tick_key_name, 16); 1867 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1868 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1869 1870 ret->tlsext_status_cb = 0; 1871 ret->tlsext_status_arg = NULL; 1872 1873 ret->next_protos_advertised_cb = 0; 1874 ret->next_proto_select_cb = 0; 1875#ifndef OPENSSL_NO_ENGINE 1876 ret->client_cert_engine = NULL; 1877#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1878#define eng_strx(x) #x 1879#define eng_str(x) eng_strx(x) 1880 /* Use specific client engine automatically... ignore errors */ 1881 { 1882 ENGINE *eng; 1883 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1884 if (!eng) { 1885 ERR_clear_error(); 1886 ENGINE_load_builtin_engines(); 1887 eng = ENGINE_by_id(eng_str( 1888 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1889 } 1890 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1891 ERR_clear_error(); 1892 } 1893#endif 1894#endif 1895 /* 1896 * Default is to connect to non-RI servers. When RI is more widely 1897 * deployed might change this. 1898 */ 1899 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1900 1901 /* Disable SSLv3 by default. */ 1902 ret->options |= SSL_OP_NO_SSLv3; 1903 1904 return (ret); 1905err: 1906 SSLerr(SSL_F_SSL_CTX_NEW, 1907 ERR_R_MALLOC_FAILURE); 1908err2: 1909 SSL_CTX_free(ret); 1910 return (NULL); 1911} 1912 1913void 1914SSL_CTX_free(SSL_CTX *a) 1915{ 1916 int i; 1917 1918 if (a == NULL) 1919 return; 1920 1921 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1922 if (i > 0) 1923 return; 1924 1925 if (a->param) 1926 X509_VERIFY_PARAM_free(a->param); 1927 1928 /* 1929 * Free internal session cache. However: the remove_cb() may reference 1930 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1931 * after the sessions were flushed. 1932 * As the ex_data handling routines might also touch the session cache, 1933 * the most secure solution seems to be: empty (flush) the cache, then 1934 * free ex_data, then finally free the cache. 1935 * (See ticket [openssl.org #212].) 1936 */ 1937 if (a->sessions != NULL) 1938 SSL_CTX_flush_sessions(a, 0); 1939 1940 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1941 1942 if (a->sessions != NULL) 1943 lh_SSL_SESSION_free(a->sessions); 1944 1945 if (a->cert_store != NULL) 1946 X509_STORE_free(a->cert_store); 1947 if (a->cipher_list != NULL) 1948 sk_SSL_CIPHER_free(a->cipher_list); 1949 if (a->cipher_list_by_id != NULL) 1950 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1951 if (a->cert != NULL) 1952 ssl_cert_free(a->cert); 1953 if (a->client_CA != NULL) 1954 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1955 if (a->extra_certs != NULL) 1956 sk_X509_pop_free(a->extra_certs, X509_free); 1957 1958#ifndef OPENSSL_NO_SRTP 1959 if (a->srtp_profiles) 1960 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1961#endif 1962 1963#ifndef OPENSSL_NO_ENGINE 1964 if (a->client_cert_engine) 1965 ENGINE_finish(a->client_cert_engine); 1966#endif 1967 1968 free(a->alpn_client_proto_list); 1969 1970 free(a); 1971} 1972 1973void 1974SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1975{ 1976 ctx->default_passwd_callback = cb; 1977} 1978 1979void 1980SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1981{ 1982 ctx->default_passwd_callback_userdata = u; 1983} 1984 1985void 1986SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1987 void *), void *arg) 1988{ 1989 ctx->app_verify_callback = cb; 1990 ctx->app_verify_arg = arg; 1991} 1992 1993void 1994SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1995{ 1996 ctx->verify_mode = mode; 1997 ctx->default_verify_callback = cb; 1998} 1999 2000void 2001SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2002{ 2003 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2004} 2005 2006void 2007ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2008{ 2009 CERT_PKEY *cpk; 2010 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2011 unsigned long mask_k, mask_a; 2012 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2013 int have_ecdh_tmp; 2014 X509 *x = NULL; 2015 EVP_PKEY *ecc_pkey = NULL; 2016 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2017 2018 if (c == NULL) 2019 return; 2020 2021 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2022 c->dh_tmp_auto != 0); 2023 2024 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2025 c->ecdh_tmp_auto != 0); 2026 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2027 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2028 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2029 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2030 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2031 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2032/* FIX THIS EAY EAY EAY */ 2033 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2034 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2035 mask_k = 0; 2036 mask_a = 0; 2037 2038 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2039 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2040 mask_k |= SSL_kGOST; 2041 mask_a |= SSL_aGOST01; 2042 } 2043 2044 if (rsa_enc) 2045 mask_k|=SSL_kRSA; 2046 2047 if (dh_tmp) 2048 mask_k|=SSL_kDHE; 2049 2050 if (rsa_enc || rsa_sign) 2051 mask_a|=SSL_aRSA; 2052 2053 if (dsa_sign) 2054 mask_a|=SSL_aDSS; 2055 2056 mask_a|=SSL_aNULL; 2057 2058 /* 2059 * An ECC certificate may be usable for ECDH and/or 2060 * ECDSA cipher suites depending on the key usage extension. 2061 */ 2062 if (have_ecc_cert) { 2063 /* This call populates extension flags (ex_flags) */ 2064 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2065 X509_check_purpose(x, -1, 0); 2066 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2067 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2068 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2069 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2070 ecc_pkey = X509_get_pubkey(x); 2071 EVP_PKEY_free(ecc_pkey); 2072 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2073 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2074 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2075 } 2076 if (ecdh_ok) { 2077 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2078 mask_k|=SSL_kECDHr; 2079 mask_a|=SSL_aECDH; 2080 } 2081 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2082 mask_k|=SSL_kECDHe; 2083 mask_a|=SSL_aECDH; 2084 } 2085 } 2086 if (ecdsa_ok) 2087 mask_a|=SSL_aECDSA; 2088 } 2089 2090 if (have_ecdh_tmp) { 2091 mask_k|=SSL_kECDHE; 2092 } 2093 2094 2095 c->mask_k = mask_k; 2096 c->mask_a = mask_a; 2097 c->valid = 1; 2098} 2099 2100/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2101#define ku_reject(x, usage) \ 2102 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2103 2104 2105int 2106ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2107{ 2108 unsigned long alg_k, alg_a; 2109 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2110 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2111 2112 alg_k = cs->algorithm_mkey; 2113 alg_a = cs->algorithm_auth; 2114 2115 /* This call populates the ex_flags field correctly */ 2116 X509_check_purpose(x, -1, 0); 2117 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2118 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2119 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2120 } 2121 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2122 /* key usage, if present, must allow key agreement */ 2123 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2124 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2125 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2126 return (0); 2127 } 2128 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2129 TLS1_2_VERSION) { 2130 /* signature alg must be ECDSA */ 2131 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2132 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2133 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2134 return (0); 2135 } 2136 } 2137 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2138 TLS1_2_VERSION) { 2139 /* signature alg must be RSA */ 2140 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2141 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2142 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2143 return (0); 2144 } 2145 } 2146 } 2147 if (alg_a & SSL_aECDSA) { 2148 /* key usage, if present, must allow signing */ 2149 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2150 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2151 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2152 return (0); 2153 } 2154 } 2155 2156 return (1); 2157 /* all checks are ok */ 2158} 2159 2160 2161/* THIS NEEDS CLEANING UP */ 2162CERT_PKEY * 2163ssl_get_server_send_pkey(const SSL *s) 2164{ 2165 unsigned long alg_k, alg_a; 2166 CERT *c; 2167 int i; 2168 2169 c = s->cert; 2170 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2171 2172 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2173 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2174 2175 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2176 /* 2177 * We don't need to look at SSL_kECDHE 2178 * since no certificate is needed for 2179 * anon ECDH and for authenticated 2180 * ECDHE, the check for the auth 2181 * algorithm will set i correctly 2182 * NOTE: For ECDH-RSA, we need an ECC 2183 * not an RSA cert but for EECDH-RSA 2184 * we need an RSA cert. Placing the 2185 * checks for SSL_kECDH before RSA 2186 * checks ensures the correct cert is chosen. 2187 */ 2188 i = SSL_PKEY_ECC; 2189 } else if (alg_a & SSL_aECDSA) { 2190 i = SSL_PKEY_ECC; 2191 } else if (alg_a & SSL_aDSS) { 2192 i = SSL_PKEY_DSA_SIGN; 2193 } else if (alg_a & SSL_aRSA) { 2194 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2195 i = SSL_PKEY_RSA_SIGN; 2196 else 2197 i = SSL_PKEY_RSA_ENC; 2198 } else if (alg_a & SSL_aGOST01) { 2199 i = SSL_PKEY_GOST01; 2200 } else { /* if (alg_a & SSL_aNULL) */ 2201 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2202 return (NULL); 2203 } 2204 2205 return (c->pkeys + i); 2206} 2207 2208X509 * 2209ssl_get_server_send_cert(const SSL *s) 2210{ 2211 CERT_PKEY *cpk; 2212 2213 cpk = ssl_get_server_send_pkey(s); 2214 if (!cpk) 2215 return (NULL); 2216 return (cpk->x509); 2217} 2218 2219EVP_PKEY * 2220ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2221{ 2222 unsigned long alg_a; 2223 CERT *c; 2224 int idx = -1; 2225 2226 alg_a = cipher->algorithm_auth; 2227 c = s->cert; 2228 2229 if ((alg_a & SSL_aDSS) && 2230 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2231 idx = SSL_PKEY_DSA_SIGN; 2232 else if (alg_a & SSL_aRSA) { 2233 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2234 idx = SSL_PKEY_RSA_SIGN; 2235 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2236 idx = SSL_PKEY_RSA_ENC; 2237 } else if ((alg_a & SSL_aECDSA) && 2238 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2239 idx = SSL_PKEY_ECC; 2240 if (idx == -1) { 2241 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2242 return (NULL); 2243 } 2244 if (pmd) 2245 *pmd = c->pkeys[idx].digest; 2246 return (c->pkeys[idx].privatekey); 2247} 2248 2249DH * 2250ssl_get_auto_dh(SSL *s) 2251{ 2252 CERT_PKEY *cpk; 2253 int keylen; 2254 DH *dhp; 2255 2256 if (s->cert->dh_tmp_auto == 2) { 2257 keylen = 1024; 2258 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2259 keylen = 1024; 2260 if (s->s3->tmp.new_cipher->strength_bits == 256) 2261 keylen = 3072; 2262 } else { 2263 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2264 return (NULL); 2265 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2266 return (NULL); 2267 keylen = EVP_PKEY_bits(cpk->privatekey); 2268 } 2269 2270 if ((dhp = DH_new()) == NULL) 2271 return (NULL); 2272 2273 dhp->g = BN_new(); 2274 if (dhp->g != NULL) 2275 BN_set_word(dhp->g, 2); 2276 2277 if (keylen >= 8192) 2278 dhp->p = get_rfc3526_prime_8192(NULL); 2279 else if (keylen >= 4096) 2280 dhp->p = get_rfc3526_prime_4096(NULL); 2281 else if (keylen >= 3072) 2282 dhp->p = get_rfc3526_prime_3072(NULL); 2283 else if (keylen >= 2048) 2284 dhp->p = get_rfc3526_prime_2048(NULL); 2285 else if (keylen >= 1536) 2286 dhp->p = get_rfc3526_prime_1536(NULL); 2287 else 2288 dhp->p = get_rfc2409_prime_1024(NULL); 2289 2290 if (dhp->p == NULL || dhp->g == NULL) { 2291 DH_free(dhp); 2292 return (NULL); 2293 } 2294 return (dhp); 2295} 2296 2297void 2298ssl_update_cache(SSL *s, int mode) 2299{ 2300 int i; 2301 2302 /* 2303 * If the session_id_length is 0, we are not supposed to cache it, 2304 * and it would be rather hard to do anyway :-) 2305 */ 2306 if (s->session->session_id_length == 0) 2307 return; 2308 2309 i = s->session_ctx->session_cache_mode; 2310 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2311 || SSL_CTX_add_session(s->session_ctx, s->session)) 2312 && (s->session_ctx->new_session_cb != NULL)) { 2313 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2314 if (!s->session_ctx->new_session_cb(s, s->session)) 2315 SSL_SESSION_free(s->session); 2316 } 2317 2318 /* auto flush every 255 connections */ 2319 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2320 ((i & mode) == mode)) { 2321 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2322 s->session_ctx->stats.sess_connect_good : 2323 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2324 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2325 } 2326 } 2327} 2328 2329const SSL_METHOD * 2330SSL_get_ssl_method(SSL *s) 2331{ 2332 return (s->method); 2333} 2334 2335int 2336SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2337{ 2338 int conn = -1; 2339 int ret = 1; 2340 2341 if (s->method != meth) { 2342 if (s->handshake_func != NULL) 2343 conn = (s->handshake_func == s->method->ssl_connect); 2344 2345 if (s->method->version == meth->version) 2346 s->method = meth; 2347 else { 2348 s->method->ssl_free(s); 2349 s->method = meth; 2350 ret = s->method->ssl_new(s); 2351 } 2352 2353 if (conn == 1) 2354 s->handshake_func = meth->ssl_connect; 2355 else if (conn == 0) 2356 s->handshake_func = meth->ssl_accept; 2357 } 2358 return (ret); 2359} 2360 2361int 2362SSL_get_error(const SSL *s, int i) 2363{ 2364 int reason; 2365 unsigned long l; 2366 BIO *bio; 2367 2368 if (i > 0) 2369 return (SSL_ERROR_NONE); 2370 2371 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2372 * etc, where we do encode the error */ 2373 if ((l = ERR_peek_error()) != 0) { 2374 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2375 return (SSL_ERROR_SYSCALL); 2376 else 2377 return (SSL_ERROR_SSL); 2378 } 2379 2380 if ((i < 0) && SSL_want_read(s)) { 2381 bio = SSL_get_rbio(s); 2382 if (BIO_should_read(bio)) { 2383 return (SSL_ERROR_WANT_READ); 2384 } else if (BIO_should_write(bio)) { 2385 /* 2386 * This one doesn't make too much sense... We never 2387 * try to write to the rbio, and an application 2388 * program where rbio and wbio are separate couldn't 2389 * even know what it should wait for. However if we 2390 * ever set s->rwstate incorrectly (so that we have 2391 * SSL_want_read(s) instead of SSL_want_write(s)) 2392 * and rbio and wbio *are* the same, this test works 2393 * around that bug; so it might be safer to keep it. 2394 */ 2395 return (SSL_ERROR_WANT_WRITE); 2396 } else if (BIO_should_io_special(bio)) { 2397 reason = BIO_get_retry_reason(bio); 2398 if (reason == BIO_RR_CONNECT) 2399 return (SSL_ERROR_WANT_CONNECT); 2400 else if (reason == BIO_RR_ACCEPT) 2401 return (SSL_ERROR_WANT_ACCEPT); 2402 else 2403 return (SSL_ERROR_SYSCALL); /* unknown */ 2404 } 2405 } 2406 2407 if ((i < 0) && SSL_want_write(s)) { 2408 bio = SSL_get_wbio(s); 2409 if (BIO_should_write(bio)) { 2410 return (SSL_ERROR_WANT_WRITE); 2411 } else if (BIO_should_read(bio)) { 2412 /* 2413 * See above (SSL_want_read(s) with 2414 * BIO_should_write(bio)) 2415 */ 2416 return (SSL_ERROR_WANT_READ); 2417 } else if (BIO_should_io_special(bio)) { 2418 reason = BIO_get_retry_reason(bio); 2419 if (reason == BIO_RR_CONNECT) 2420 return (SSL_ERROR_WANT_CONNECT); 2421 else if (reason == BIO_RR_ACCEPT) 2422 return (SSL_ERROR_WANT_ACCEPT); 2423 else 2424 return (SSL_ERROR_SYSCALL); 2425 } 2426 } 2427 if ((i < 0) && SSL_want_x509_lookup(s)) { 2428 return (SSL_ERROR_WANT_X509_LOOKUP); 2429 } 2430 2431 if (i == 0) { 2432 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2433 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2434 return (SSL_ERROR_ZERO_RETURN); 2435 } 2436 return (SSL_ERROR_SYSCALL); 2437} 2438 2439int 2440SSL_do_handshake(SSL *s) 2441{ 2442 int ret = 1; 2443 2444 if (s->handshake_func == NULL) { 2445 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2446 SSL_R_CONNECTION_TYPE_NOT_SET); 2447 return (-1); 2448 } 2449 2450 s->method->ssl_renegotiate_check(s); 2451 2452 if (SSL_in_init(s) || SSL_in_before(s)) { 2453 ret = s->handshake_func(s); 2454 } 2455 return (ret); 2456} 2457 2458/* 2459 * For the next 2 functions, SSL_clear() sets shutdown and so 2460 * one of these calls will reset it 2461 */ 2462void 2463SSL_set_accept_state(SSL *s) 2464{ 2465 s->server = 1; 2466 s->shutdown = 0; 2467 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2468 s->handshake_func = s->method->ssl_accept; 2469 /* clear the current cipher */ 2470 ssl_clear_cipher_ctx(s); 2471 ssl_clear_hash_ctx(&s->read_hash); 2472 ssl_clear_hash_ctx(&s->write_hash); 2473} 2474 2475void 2476SSL_set_connect_state(SSL *s) 2477{ 2478 s->server = 0; 2479 s->shutdown = 0; 2480 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2481 s->handshake_func = s->method->ssl_connect; 2482 /* clear the current cipher */ 2483 ssl_clear_cipher_ctx(s); 2484 ssl_clear_hash_ctx(&s->read_hash); 2485 ssl_clear_hash_ctx(&s->write_hash); 2486} 2487 2488int 2489ssl_undefined_function(SSL *s) 2490{ 2491 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2492 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2493 return (0); 2494} 2495 2496int 2497ssl_undefined_void_function(void) 2498{ 2499 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2500 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2501 return (0); 2502} 2503 2504int 2505ssl_undefined_const_function(const SSL *s) 2506{ 2507 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2508 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2509 return (0); 2510} 2511 2512SSL_METHOD * 2513ssl_bad_method(int ver) 2514{ 2515 SSLerr(SSL_F_SSL_BAD_METHOD, 2516 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2517 return (NULL); 2518} 2519 2520const char * 2521ssl_version_string(int ver) 2522{ 2523 switch (ver) { 2524 case DTLS1_BAD_VER: 2525 return (SSL_TXT_DTLS1_BAD); 2526 case DTLS1_VERSION: 2527 return (SSL_TXT_DTLS1); 2528 case SSL3_VERSION: 2529 return (SSL_TXT_SSLV3); 2530 case TLS1_VERSION: 2531 return (SSL_TXT_TLSV1); 2532 case TLS1_1_VERSION: 2533 return (SSL_TXT_TLSV1_1); 2534 case TLS1_2_VERSION: 2535 return (SSL_TXT_TLSV1_2); 2536 default: 2537 return ("unknown"); 2538 } 2539} 2540 2541const char * 2542SSL_get_version(const SSL *s) 2543{ 2544 return ssl_version_string(s->version); 2545} 2546 2547SSL * 2548SSL_dup(SSL *s) 2549{ 2550 STACK_OF(X509_NAME) *sk; 2551 X509_NAME *xn; 2552 SSL *ret; 2553 int i; 2554 2555 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2556 return (NULL); 2557 2558 ret->version = s->version; 2559 ret->type = s->type; 2560 ret->method = s->method; 2561 2562 if (s->session != NULL) { 2563 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2564 SSL_copy_session_id(ret, s); 2565 } else { 2566 /* 2567 * No session has been established yet, so we have to expect 2568 * that s->cert or ret->cert will be changed later -- 2569 * they should not both point to the same object, 2570 * and thus we can't use SSL_copy_session_id. 2571 */ 2572 2573 ret->method->ssl_free(ret); 2574 ret->method = s->method; 2575 ret->method->ssl_new(ret); 2576 2577 if (s->cert != NULL) { 2578 if (ret->cert != NULL) { 2579 ssl_cert_free(ret->cert); 2580 } 2581 ret->cert = ssl_cert_dup(s->cert); 2582 if (ret->cert == NULL) 2583 goto err; 2584 } 2585 2586 SSL_set_session_id_context(ret, 2587 s->sid_ctx, s->sid_ctx_length); 2588 } 2589 2590 ret->options = s->options; 2591 ret->mode = s->mode; 2592 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2593 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2594 ret->msg_callback = s->msg_callback; 2595 ret->msg_callback_arg = s->msg_callback_arg; 2596 SSL_set_verify(ret, SSL_get_verify_mode(s), 2597 SSL_get_verify_callback(s)); 2598 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2599 ret->generate_session_id = s->generate_session_id; 2600 2601 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2602 2603 ret->debug = s->debug; 2604 2605 /* copy app data, a little dangerous perhaps */ 2606 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2607 &ret->ex_data, &s->ex_data)) 2608 goto err; 2609 2610 /* setup rbio, and wbio */ 2611 if (s->rbio != NULL) { 2612 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2613 goto err; 2614 } 2615 if (s->wbio != NULL) { 2616 if (s->wbio != s->rbio) { 2617 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2618 goto err; 2619 } else 2620 ret->wbio = ret->rbio; 2621 } 2622 ret->rwstate = s->rwstate; 2623 ret->in_handshake = s->in_handshake; 2624 ret->handshake_func = s->handshake_func; 2625 ret->server = s->server; 2626 ret->renegotiate = s->renegotiate; 2627 ret->new_session = s->new_session; 2628 ret->quiet_shutdown = s->quiet_shutdown; 2629 ret->shutdown = s->shutdown; 2630 /* SSL_dup does not really work at any state, though */ 2631 ret->state=s->state; 2632 ret->rstate = s->rstate; 2633 2634 /* 2635 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2636 * ret->init_off 2637 */ 2638 ret->init_num = 0; 2639 2640 ret->hit = s->hit; 2641 2642 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2643 2644 /* dup the cipher_list and cipher_list_by_id stacks */ 2645 if (s->cipher_list != NULL) { 2646 if ((ret->cipher_list = 2647 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2648 goto err; 2649 } 2650 if (s->cipher_list_by_id != NULL) { 2651 if ((ret->cipher_list_by_id = 2652 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2653 goto err; 2654 } 2655 2656 /* Dup the client_CA list */ 2657 if (s->client_CA != NULL) { 2658 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2659 ret->client_CA = sk; 2660 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2661 xn = sk_X509_NAME_value(sk, i); 2662 if (sk_X509_NAME_set(sk, i, 2663 X509_NAME_dup(xn)) == NULL) { 2664 X509_NAME_free(xn); 2665 goto err; 2666 } 2667 } 2668 } 2669 2670 if (0) { 2671err: 2672 if (ret != NULL) 2673 SSL_free(ret); 2674 ret = NULL; 2675 } 2676 return (ret); 2677} 2678 2679void 2680ssl_clear_cipher_ctx(SSL *s) 2681{ 2682 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2683 s->enc_read_ctx = NULL; 2684 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2685 s->enc_write_ctx = NULL; 2686 2687 if (s->aead_read_ctx != NULL) { 2688 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2689 free(s->aead_read_ctx); 2690 s->aead_read_ctx = NULL; 2691 } 2692 if (s->aead_write_ctx != NULL) { 2693 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2694 free(s->aead_write_ctx); 2695 s->aead_write_ctx = NULL; 2696 } 2697 2698} 2699 2700/* Fix this function so that it takes an optional type parameter */ 2701X509 * 2702SSL_get_certificate(const SSL *s) 2703{ 2704 if (s->cert != NULL) 2705 return (s->cert->key->x509); 2706 else 2707 return (NULL); 2708} 2709 2710/* Fix this function so that it takes an optional type parameter */ 2711EVP_PKEY * 2712SSL_get_privatekey(SSL *s) 2713{ 2714 if (s->cert != NULL) 2715 return (s->cert->key->privatekey); 2716 else 2717 return (NULL); 2718} 2719 2720const SSL_CIPHER * 2721SSL_get_current_cipher(const SSL *s) 2722{ 2723 if ((s->session != NULL) && (s->session->cipher != NULL)) 2724 return (s->session->cipher); 2725 return (NULL); 2726} 2727const void * 2728SSL_get_current_compression(SSL *s) 2729{ 2730 return (NULL); 2731} 2732 2733const void * 2734SSL_get_current_expansion(SSL *s) 2735{ 2736 return (NULL); 2737} 2738 2739int 2740ssl_init_wbio_buffer(SSL *s, int push) 2741{ 2742 BIO *bbio; 2743 2744 if (s->bbio == NULL) { 2745 bbio = BIO_new(BIO_f_buffer()); 2746 if (bbio == NULL) 2747 return (0); 2748 s->bbio = bbio; 2749 } else { 2750 bbio = s->bbio; 2751 if (s->bbio == s->wbio) 2752 s->wbio = BIO_pop(s->wbio); 2753 } 2754 (void)BIO_reset(bbio); 2755/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2756 if (!BIO_set_read_buffer_size(bbio, 1)) { 2757 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2758 ERR_R_BUF_LIB); 2759 return (0); 2760 } 2761 if (push) { 2762 if (s->wbio != bbio) 2763 s->wbio = BIO_push(bbio, s->wbio); 2764 } else { 2765 if (s->wbio == bbio) 2766 s->wbio = BIO_pop(bbio); 2767 } 2768 return (1); 2769} 2770 2771void 2772ssl_free_wbio_buffer(SSL *s) 2773{ 2774 if (s->bbio == NULL) 2775 return; 2776 2777 if (s->bbio == s->wbio) { 2778 /* remove buffering */ 2779 s->wbio = BIO_pop(s->wbio); 2780 } 2781 BIO_free(s->bbio); 2782 s->bbio = NULL; 2783} 2784 2785void 2786SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2787{ 2788 ctx->quiet_shutdown = mode; 2789} 2790 2791int 2792SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2793{ 2794 return (ctx->quiet_shutdown); 2795} 2796 2797void 2798SSL_set_quiet_shutdown(SSL *s, int mode) 2799{ 2800 s->quiet_shutdown = mode; 2801} 2802 2803int 2804SSL_get_quiet_shutdown(const SSL *s) 2805{ 2806 return (s->quiet_shutdown); 2807} 2808 2809void 2810SSL_set_shutdown(SSL *s, int mode) 2811{ 2812 s->shutdown = mode; 2813} 2814 2815int 2816SSL_get_shutdown(const SSL *s) 2817{ 2818 return (s->shutdown); 2819} 2820 2821int 2822SSL_version(const SSL *s) 2823{ 2824 return (s->version); 2825} 2826 2827SSL_CTX * 2828SSL_get_SSL_CTX(const SSL *ssl) 2829{ 2830 return (ssl->ctx); 2831} 2832 2833SSL_CTX * 2834SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2835{ 2836 if (ssl->ctx == ctx) 2837 return (ssl->ctx); 2838 if (ctx == NULL) 2839 ctx = ssl->initial_ctx; 2840 if (ssl->cert != NULL) 2841 ssl_cert_free(ssl->cert); 2842 ssl->cert = ssl_cert_dup(ctx->cert); 2843 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2844 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2845 ssl->ctx = ctx; 2846 return (ssl->ctx); 2847} 2848 2849int 2850SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2851{ 2852 return (X509_STORE_set_default_paths(ctx->cert_store)); 2853} 2854 2855int 2856SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2857 const char *CApath) 2858{ 2859 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2860} 2861 2862int 2863SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2864{ 2865 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2866} 2867 2868void 2869SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2870{ 2871 ssl->info_callback = cb; 2872} 2873 2874void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2875{ 2876 return (ssl->info_callback); 2877} 2878 2879int 2880SSL_state(const SSL *ssl) 2881{ 2882 return (ssl->state); 2883} 2884 2885void 2886SSL_set_state(SSL *ssl, int state) 2887{ 2888 ssl->state = state; 2889} 2890 2891void 2892SSL_set_verify_result(SSL *ssl, long arg) 2893{ 2894 ssl->verify_result = arg; 2895} 2896 2897long 2898SSL_get_verify_result(const SSL *ssl) 2899{ 2900 return (ssl->verify_result); 2901} 2902 2903int 2904SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2905 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2906{ 2907 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2908 new_func, dup_func, free_func)); 2909} 2910 2911int 2912SSL_set_ex_data(SSL *s, int idx, void *arg) 2913{ 2914 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2915} 2916 2917void * 2918SSL_get_ex_data(const SSL *s, int idx) 2919{ 2920 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2921} 2922 2923int 2924SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2925 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2926{ 2927 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2928 new_func, dup_func, free_func)); 2929} 2930 2931int 2932SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2933{ 2934 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2935} 2936 2937void * 2938SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2939{ 2940 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2941} 2942 2943int 2944ssl_ok(SSL *s) 2945{ 2946 return (1); 2947} 2948 2949X509_STORE * 2950SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2951{ 2952 return (ctx->cert_store); 2953} 2954 2955void 2956SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2957{ 2958 if (ctx->cert_store != NULL) 2959 X509_STORE_free(ctx->cert_store); 2960 ctx->cert_store = store; 2961} 2962 2963int 2964SSL_want(const SSL *s) 2965{ 2966 return (s->rwstate); 2967} 2968 2969void 2970SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2971 int keylength)) 2972{ 2973 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2974} 2975 2976void 2977SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2978 int keylength)) 2979{ 2980 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2981} 2982 2983void 2984SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2985 int keylength)) 2986{ 2987 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2988} 2989 2990void 2991SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2992 int keylength)) 2993{ 2994 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2995} 2996 2997void 2998SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2999 int is_export, int keylength)) 3000{ 3001 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3002 (void (*)(void))ecdh); 3003} 3004 3005void 3006SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3007 int keylength)) 3008{ 3009 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3010} 3011 3012 3013void 3014SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3015 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3016{ 3017 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3018 (void (*)(void))cb); 3019} 3020 3021void 3022SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3023 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3024{ 3025 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3026} 3027 3028/* 3029 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3030 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3031 * any. If EVP_MD pointer is passed, initializes ctx with this md 3032 * Returns newly allocated ctx; 3033 */ 3034EVP_MD_CTX * 3035ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3036{ 3037 ssl_clear_hash_ctx(hash); 3038 *hash = EVP_MD_CTX_create(); 3039 if (*hash != NULL && md != NULL) { 3040 if (!EVP_DigestInit_ex(*hash, md, NULL)) { 3041 ssl_clear_hash_ctx(hash); 3042 return (NULL); 3043 } 3044 } 3045 return (*hash); 3046} 3047 3048void 3049ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3050{ 3051 if (*hash) 3052 EVP_MD_CTX_destroy(*hash); 3053 *hash = NULL; 3054} 3055 3056void 3057SSL_set_debug(SSL *s, int debug) 3058{ 3059 s->debug = debug; 3060} 3061 3062int 3063SSL_cache_hit(SSL *s) 3064{ 3065 return (s->hit); 3066} 3067 3068IMPLEMENT_STACK_OF(SSL_CIPHER) 3069IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3070