ssl_lib.c revision 1.91
1/* $OpenBSD: ssl_lib.c,v 1.91 2014/12/10 14:58:56 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# ifndef OPENSSL_NO_NEXTPROTONEG 337 s->next_proto_negotiated = NULL; 338# endif 339 340 if (s->ctx->alpn_client_proto_list != NULL) { 341 s->alpn_client_proto_list = 342 malloc(s->ctx->alpn_client_proto_list_len); 343 if (s->alpn_client_proto_list == NULL) 344 goto err; 345 memcpy(s->alpn_client_proto_list, 346 s->ctx->alpn_client_proto_list, 347 s->ctx->alpn_client_proto_list_len); 348 s->alpn_client_proto_list_len = 349 s->ctx->alpn_client_proto_list_len; 350 } 351 352 s->verify_result = X509_V_OK; 353 354 s->method = ctx->method; 355 356 if (!s->method->ssl_new(s)) 357 goto err; 358 359 s->references = 1; 360 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 361 362 SSL_clear(s); 363 364 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 365 366 367 return (s); 368err: 369 if (s != NULL) { 370 if (s->cert != NULL) 371 ssl_cert_free(s->cert); 372 SSL_CTX_free(s->ctx); /* decrement reference count */ 373 free(s); 374 } 375 SSLerr(SSL_F_SSL_NEW, 376 ERR_R_MALLOC_FAILURE); 377 return (NULL); 378} 379 380int 381SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 382 unsigned int sid_ctx_len) 383{ 384 if (sid_ctx_len > sizeof ctx->sid_ctx) { 385 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 386 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 387 return (0); 388 } 389 ctx->sid_ctx_length = sid_ctx_len; 390 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 391 392 return (1); 393} 394 395int 396SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 397 unsigned int sid_ctx_len) 398{ 399 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 400 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 401 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 402 return (0); 403 } 404 ssl->sid_ctx_length = sid_ctx_len; 405 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 406 407 return (1); 408} 409 410int 411SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 412{ 413 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 414 ctx->generate_session_id = cb; 415 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 416 return (1); 417} 418 419int 420SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 421{ 422 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 423 ssl->generate_session_id = cb; 424 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 425 return (1); 426} 427 428int 429SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 430 unsigned int id_len) 431{ 432 /* 433 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 434 * shows how we can "construct" a session to give us the desired 435 * check - ie. to find if there's a session in the hash table 436 * that would conflict with any new session built out of this 437 * id/id_len and the ssl_version in use by this SSL. 438 */ 439 SSL_SESSION r, *p; 440 441 if (id_len > sizeof r.session_id) 442 return (0); 443 444 r.ssl_version = ssl->version; 445 r.session_id_length = id_len; 446 memcpy(r.session_id, id, id_len); 447 448 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 449 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 450 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 451 return (p != NULL); 452} 453 454int 455SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 456{ 457 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 458} 459 460int 461SSL_set_purpose(SSL *s, int purpose) 462{ 463 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 464} 465 466int 467SSL_CTX_set_trust(SSL_CTX *s, int trust) 468{ 469 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 470} 471 472int 473SSL_set_trust(SSL *s, int trust) 474{ 475 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 476} 477 478int 479SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 480{ 481 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 482} 483 484int 485SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 486{ 487 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 488} 489 490void 491SSL_free(SSL *s) 492{ 493 int i; 494 495 if (s == NULL) 496 return; 497 498 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 499 if (i > 0) 500 return; 501 502 if (s->param) 503 X509_VERIFY_PARAM_free(s->param); 504 505 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 506 507 if (s->bbio != NULL) { 508 /* If the buffering BIO is in place, pop it off */ 509 if (s->bbio == s->wbio) { 510 s->wbio = BIO_pop(s->wbio); 511 } 512 BIO_free(s->bbio); 513 s->bbio = NULL; 514 } 515 if (s->rbio != NULL) 516 BIO_free_all(s->rbio); 517 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 518 BIO_free_all(s->wbio); 519 520 if (s->init_buf != NULL) 521 BUF_MEM_free(s->init_buf); 522 523 /* add extra stuff */ 524 if (s->cipher_list != NULL) 525 sk_SSL_CIPHER_free(s->cipher_list); 526 if (s->cipher_list_by_id != NULL) 527 sk_SSL_CIPHER_free(s->cipher_list_by_id); 528 529 /* Make the next call work :-) */ 530 if (s->session != NULL) { 531 ssl_clear_bad_session(s); 532 SSL_SESSION_free(s->session); 533 } 534 535 ssl_clear_cipher_ctx(s); 536 ssl_clear_hash_ctx(&s->read_hash); 537 ssl_clear_hash_ctx(&s->write_hash); 538 539 if (s->cert != NULL) 540 ssl_cert_free(s->cert); 541 /* Free up if allocated */ 542 543 free(s->tlsext_hostname); 544 SSL_CTX_free(s->initial_ctx); 545 free(s->tlsext_ecpointformatlist); 546 free(s->tlsext_ellipticcurvelist); 547 if (s->tlsext_ocsp_exts) 548 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 549 X509_EXTENSION_free); 550 if (s->tlsext_ocsp_ids) 551 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 552 free(s->tlsext_ocsp_resp); 553 554 if (s->client_CA != NULL) 555 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 556 557 if (s->method != NULL) 558 s->method->ssl_free(s); 559 560 SSL_CTX_free(s->ctx); 561 562 563#ifndef OPENSSL_NO_NEXTPROTONEG 564 free(s->next_proto_negotiated); 565#endif 566 free(s->alpn_client_proto_list); 567 568#ifndef OPENSSL_NO_SRTP 569 if (s->srtp_profiles) 570 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 571#endif 572 573 free(s); 574} 575 576void 577SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 578{ 579 /* If the output buffering BIO is still in place, remove it */ 580 if (s->bbio != NULL) { 581 if (s->wbio == s->bbio) { 582 s->wbio = s->wbio->next_bio; 583 s->bbio->next_bio = NULL; 584 } 585 } 586 if ((s->rbio != NULL) && (s->rbio != rbio)) 587 BIO_free_all(s->rbio); 588 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 589 BIO_free_all(s->wbio); 590 s->rbio = rbio; 591 s->wbio = wbio; 592} 593 594BIO * 595SSL_get_rbio(const SSL *s) 596{ 597 return (s->rbio); 598} 599 600BIO * 601SSL_get_wbio(const SSL *s) 602{ 603 return (s->wbio); 604} 605 606int 607SSL_get_fd(const SSL *s) 608{ 609 return (SSL_get_rfd(s)); 610} 611 612int 613SSL_get_rfd(const SSL *s) 614{ 615 int ret = -1; 616 BIO *b, *r; 617 618 b = SSL_get_rbio(s); 619 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 620 if (r != NULL) 621 BIO_get_fd(r, &ret); 622 return (ret); 623} 624 625int 626SSL_get_wfd(const SSL *s) 627{ 628 int ret = -1; 629 BIO *b, *r; 630 631 b = SSL_get_wbio(s); 632 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 633 if (r != NULL) 634 BIO_get_fd(r, &ret); 635 return (ret); 636} 637 638int 639SSL_set_fd(SSL *s, int fd) 640{ 641 int ret = 0; 642 BIO *bio = NULL; 643 644 bio = BIO_new(BIO_s_socket()); 645 646 if (bio == NULL) { 647 SSLerr(SSL_F_SSL_SET_FD, 648 ERR_R_BUF_LIB); 649 goto err; 650 } 651 BIO_set_fd(bio, fd, BIO_NOCLOSE); 652 SSL_set_bio(s, bio, bio); 653 ret = 1; 654err: 655 return (ret); 656} 657 658int 659SSL_set_wfd(SSL *s, int fd) 660{ 661 int ret = 0; 662 BIO *bio = NULL; 663 664 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 665 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 666 bio = BIO_new(BIO_s_socket()); 667 668 if (bio == NULL) { 669 SSLerr(SSL_F_SSL_SET_WFD, 670 ERR_R_BUF_LIB); 671 goto err; 672 } 673 BIO_set_fd(bio, fd, BIO_NOCLOSE); 674 SSL_set_bio(s, SSL_get_rbio(s), bio); 675 } else 676 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 677 ret = 1; 678err: 679 return (ret); 680} 681 682int 683SSL_set_rfd(SSL *s, int fd) 684{ 685 int ret = 0; 686 BIO *bio = NULL; 687 688 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 689 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 690 bio = BIO_new(BIO_s_socket()); 691 692 if (bio == NULL) { 693 SSLerr(SSL_F_SSL_SET_RFD, 694 ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, bio, SSL_get_wbio(s)); 699 } else 700 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 701 ret = 1; 702err: 703 return (ret); 704} 705 706 707/* return length of latest Finished message we sent, copy to 'buf' */ 708size_t 709SSL_get_finished(const SSL *s, void *buf, size_t count) 710{ 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = s->s3->tmp.finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, s->s3->tmp.finish_md, count); 718 } 719 return (ret); 720} 721 722/* return length of latest Finished message we expected, copy to 'buf' */ 723size_t 724SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 725{ 726 size_t ret = 0; 727 728 if (s->s3 != NULL) { 729 ret = s->s3->tmp.peer_finish_md_len; 730 if (count > ret) 731 count = ret; 732 memcpy(buf, s->s3->tmp.peer_finish_md, count); 733 } 734 return (ret); 735} 736 737 738int 739SSL_get_verify_mode(const SSL *s) 740{ 741 return (s->verify_mode); 742} 743 744int 745SSL_get_verify_depth(const SSL *s) 746{ 747 return (X509_VERIFY_PARAM_get_depth(s->param)); 748} 749 750int 751(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 752{ 753 return (s->verify_callback); 754} 755 756int 757SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 758{ 759 return (ctx->verify_mode); 760} 761 762int 763SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 764{ 765 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 766} 767 768int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 769{ 770 return (ctx->default_verify_callback); 771} 772 773void 774SSL_set_verify(SSL *s, int mode, 775 int (*callback)(int ok, X509_STORE_CTX *ctx)) 776{ 777 s->verify_mode = mode; 778 if (callback != NULL) 779 s->verify_callback = callback; 780} 781 782void 783SSL_set_verify_depth(SSL *s, int depth) 784{ 785 X509_VERIFY_PARAM_set_depth(s->param, depth); 786} 787 788void 789SSL_set_read_ahead(SSL *s, int yes) 790{ 791 s->read_ahead = yes; 792} 793 794int 795SSL_get_read_ahead(const SSL *s) 796{ 797 return (s->read_ahead); 798} 799 800int 801SSL_pending(const SSL *s) 802{ 803 /* 804 * SSL_pending cannot work properly if read-ahead is enabled 805 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 806 * and it is impossible to fix since SSL_pending cannot report 807 * errors that may be observed while scanning the new data. 808 * (Note that SSL_pending() is often used as a boolean value, 809 * so we'd better not return -1.) 810 */ 811 return (s->method->ssl_pending(s)); 812} 813 814X509 * 815SSL_get_peer_certificate(const SSL *s) 816{ 817 X509 *r; 818 819 if ((s == NULL) || (s->session == NULL)) 820 r = NULL; 821 else 822 r = s->session->peer; 823 824 if (r == NULL) 825 return (r); 826 827 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 828 829 return (r); 830} 831 832STACK_OF(X509) * 833SSL_get_peer_cert_chain(const SSL *s) 834{ 835 STACK_OF(X509) *r; 836 837 if ((s == NULL) || (s->session == NULL) || 838 (s->session->sess_cert == NULL)) 839 r = NULL; 840 else 841 r = s->session->sess_cert->cert_chain; 842 843 /* 844 * If we are a client, cert_chain includes the peer's own 845 * certificate; 846 * if we are a server, it does not. 847 */ 848 return (r); 849} 850 851/* 852 * Now in theory, since the calling process own 't' it should be safe to 853 * modify. We need to be able to read f without being hassled 854 */ 855void 856SSL_copy_session_id(SSL *t, const SSL *f) 857{ 858 CERT *tmp; 859 860 /* Do we need to to SSL locking? */ 861 SSL_set_session(t, SSL_get_session(f)); 862 863 /* 864 * What if we are setup as SSLv2 but want to talk SSLv3 or 865 * vice-versa. 866 */ 867 if (t->method != f->method) { 868 t->method->ssl_free(t); /* cleanup current */ 869 t->method=f->method; /* change method */ 870 t->method->ssl_new(t); /* setup new */ 871 } 872 873 tmp = t->cert; 874 if (f->cert != NULL) { 875 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 876 t->cert = f->cert; 877 } else 878 t->cert = NULL; 879 if (tmp != NULL) 880 ssl_cert_free(tmp); 881 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 882} 883 884/* Fix this so it checks all the valid key/cert options */ 885int 886SSL_CTX_check_private_key(const SSL_CTX *ctx) 887{ 888 if ((ctx == NULL) || (ctx->cert == NULL) || 889 (ctx->cert->key->x509 == NULL)) { 890 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 891 SSL_R_NO_CERTIFICATE_ASSIGNED); 892 return (0); 893 } 894 if (ctx->cert->key->privatekey == NULL) { 895 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 896 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 897 return (0); 898 } 899 return (X509_check_private_key(ctx->cert->key->x509, 900 ctx->cert->key->privatekey)); 901} 902 903/* Fix this function so that it takes an optional type parameter */ 904int 905SSL_check_private_key(const SSL *ssl) 906{ 907 if (ssl == NULL) { 908 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 909 ERR_R_PASSED_NULL_PARAMETER); 910 return (0); 911 } 912 if (ssl->cert == NULL) { 913 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 914 SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return (0); 916 } 917 if (ssl->cert->key->x509 == NULL) { 918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 919 SSL_R_NO_CERTIFICATE_ASSIGNED); 920 return (0); 921 } 922 if (ssl->cert->key->privatekey == NULL) { 923 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 924 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 925 return (0); 926 } 927 return (X509_check_private_key(ssl->cert->key->x509, 928 ssl->cert->key->privatekey)); 929} 930 931int 932SSL_accept(SSL *s) 933{ 934 if (s->handshake_func == 0) 935 SSL_set_accept_state(s); /* Not properly initialized yet */ 936 937 return (s->method->ssl_accept(s)); 938} 939 940int 941SSL_connect(SSL *s) 942{ 943 if (s->handshake_func == 0) 944 SSL_set_connect_state(s); /* Not properly initialized yet */ 945 946 return (s->method->ssl_connect(s)); 947} 948 949long 950SSL_get_default_timeout(const SSL *s) 951{ 952 return (s->method->get_timeout()); 953} 954 955int 956SSL_read(SSL *s, void *buf, int num) 957{ 958 if (s->handshake_func == 0) { 959 SSLerr(SSL_F_SSL_READ, 960 SSL_R_UNINITIALIZED); 961 return (-1); 962 } 963 964 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 965 s->rwstate = SSL_NOTHING; 966 return (0); 967 } 968 return (s->method->ssl_read(s, buf, num)); 969} 970 971int 972SSL_peek(SSL *s, void *buf, int num) 973{ 974 if (s->handshake_func == 0) { 975 SSLerr(SSL_F_SSL_PEEK, 976 SSL_R_UNINITIALIZED); 977 return (-1); 978 } 979 980 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 981 return (0); 982 } 983 return (s->method->ssl_peek(s, buf, num)); 984} 985 986int 987SSL_write(SSL *s, const void *buf, int num) 988{ 989 if (s->handshake_func == 0) { 990 SSLerr(SSL_F_SSL_WRITE, 991 SSL_R_UNINITIALIZED); 992 return (-1); 993 } 994 995 if (s->shutdown & SSL_SENT_SHUTDOWN) { 996 s->rwstate = SSL_NOTHING; 997 SSLerr(SSL_F_SSL_WRITE, 998 SSL_R_PROTOCOL_IS_SHUTDOWN); 999 return (-1); 1000 } 1001 return (s->method->ssl_write(s, buf, num)); 1002} 1003 1004int 1005SSL_shutdown(SSL *s) 1006{ 1007 /* 1008 * Note that this function behaves differently from what one might 1009 * expect. Return values are 0 for no success (yet), 1010 * 1 for success; but calling it once is usually not enough, 1011 * even if blocking I/O is used (see ssl3_shutdown). 1012 */ 1013 1014 if (s->handshake_func == 0) { 1015 SSLerr(SSL_F_SSL_SHUTDOWN, 1016 SSL_R_UNINITIALIZED); 1017 return (-1); 1018 } 1019 1020 if ((s != NULL) && !SSL_in_init(s)) 1021 return (s->method->ssl_shutdown(s)); 1022 else 1023 return (1); 1024} 1025 1026int 1027SSL_renegotiate(SSL *s) 1028{ 1029 if (s->renegotiate == 0) 1030 s->renegotiate = 1; 1031 1032 s->new_session = 1; 1033 1034 return (s->method->ssl_renegotiate(s)); 1035} 1036 1037int 1038SSL_renegotiate_abbreviated(SSL *s) 1039{ 1040 if (s->renegotiate == 0) 1041 s->renegotiate = 1; 1042 1043 s->new_session = 0; 1044 1045 return (s->method->ssl_renegotiate(s)); 1046} 1047 1048int 1049SSL_renegotiate_pending(SSL *s) 1050{ 1051 /* 1052 * Becomes true when negotiation is requested; 1053 * false again once a handshake has finished. 1054 */ 1055 return (s->renegotiate != 0); 1056} 1057 1058long 1059SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1060{ 1061 long l; 1062 1063 switch (cmd) { 1064 case SSL_CTRL_GET_READ_AHEAD: 1065 return (s->read_ahead); 1066 case SSL_CTRL_SET_READ_AHEAD: 1067 l = s->read_ahead; 1068 s->read_ahead = larg; 1069 return (l); 1070 1071 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1072 s->msg_callback_arg = parg; 1073 return (1); 1074 1075 case SSL_CTRL_OPTIONS: 1076 return (s->options|=larg); 1077 case SSL_CTRL_CLEAR_OPTIONS: 1078 return (s->options&=~larg); 1079 case SSL_CTRL_MODE: 1080 return (s->mode|=larg); 1081 case SSL_CTRL_CLEAR_MODE: 1082 return (s->mode &=~larg); 1083 case SSL_CTRL_GET_MAX_CERT_LIST: 1084 return (s->max_cert_list); 1085 case SSL_CTRL_SET_MAX_CERT_LIST: 1086 l = s->max_cert_list; 1087 s->max_cert_list = larg; 1088 return (l); 1089 case SSL_CTRL_SET_MTU: 1090#ifndef OPENSSL_NO_DTLS1 1091 if (larg < (long)dtls1_min_mtu()) 1092 return (0); 1093#endif 1094 if (SSL_IS_DTLS(s)) { 1095 s->d1->mtu = larg; 1096 return (larg); 1097 } 1098 return (0); 1099 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1100 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1101 return (0); 1102 s->max_send_fragment = larg; 1103 return (1); 1104 case SSL_CTRL_GET_RI_SUPPORT: 1105 if (s->s3) 1106 return (s->s3->send_connection_binding); 1107 else return (0); 1108 default: 1109 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1110 } 1111} 1112 1113long 1114SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1115{ 1116 switch (cmd) { 1117 case SSL_CTRL_SET_MSG_CALLBACK: 1118 s->msg_callback = (void (*)(int write_p, int version, 1119 int content_type, const void *buf, size_t len, 1120 SSL *ssl, void *arg))(fp); 1121 return (1); 1122 1123 default: 1124 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1125 } 1126} 1127 1128LHASH_OF(SSL_SESSION) * 1129SSL_CTX_sessions(SSL_CTX *ctx) 1130{ 1131 return (ctx->sessions); 1132} 1133 1134long 1135SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1136{ 1137 long l; 1138 1139 switch (cmd) { 1140 case SSL_CTRL_GET_READ_AHEAD: 1141 return (ctx->read_ahead); 1142 case SSL_CTRL_SET_READ_AHEAD: 1143 l = ctx->read_ahead; 1144 ctx->read_ahead = larg; 1145 return (l); 1146 1147 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1148 ctx->msg_callback_arg = parg; 1149 return (1); 1150 1151 case SSL_CTRL_GET_MAX_CERT_LIST: 1152 return (ctx->max_cert_list); 1153 case SSL_CTRL_SET_MAX_CERT_LIST: 1154 l = ctx->max_cert_list; 1155 ctx->max_cert_list = larg; 1156 return (l); 1157 1158 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1159 l = ctx->session_cache_size; 1160 ctx->session_cache_size = larg; 1161 return (l); 1162 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1163 return (ctx->session_cache_size); 1164 case SSL_CTRL_SET_SESS_CACHE_MODE: 1165 l = ctx->session_cache_mode; 1166 ctx->session_cache_mode = larg; 1167 return (l); 1168 case SSL_CTRL_GET_SESS_CACHE_MODE: 1169 return (ctx->session_cache_mode); 1170 1171 case SSL_CTRL_SESS_NUMBER: 1172 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1173 case SSL_CTRL_SESS_CONNECT: 1174 return (ctx->stats.sess_connect); 1175 case SSL_CTRL_SESS_CONNECT_GOOD: 1176 return (ctx->stats.sess_connect_good); 1177 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1178 return (ctx->stats.sess_connect_renegotiate); 1179 case SSL_CTRL_SESS_ACCEPT: 1180 return (ctx->stats.sess_accept); 1181 case SSL_CTRL_SESS_ACCEPT_GOOD: 1182 return (ctx->stats.sess_accept_good); 1183 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1184 return (ctx->stats.sess_accept_renegotiate); 1185 case SSL_CTRL_SESS_HIT: 1186 return (ctx->stats.sess_hit); 1187 case SSL_CTRL_SESS_CB_HIT: 1188 return (ctx->stats.sess_cb_hit); 1189 case SSL_CTRL_SESS_MISSES: 1190 return (ctx->stats.sess_miss); 1191 case SSL_CTRL_SESS_TIMEOUTS: 1192 return (ctx->stats.sess_timeout); 1193 case SSL_CTRL_SESS_CACHE_FULL: 1194 return (ctx->stats.sess_cache_full); 1195 case SSL_CTRL_OPTIONS: 1196 return (ctx->options|=larg); 1197 case SSL_CTRL_CLEAR_OPTIONS: 1198 return (ctx->options&=~larg); 1199 case SSL_CTRL_MODE: 1200 return (ctx->mode|=larg); 1201 case SSL_CTRL_CLEAR_MODE: 1202 return (ctx->mode&=~larg); 1203 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1204 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1205 return (0); 1206 ctx->max_send_fragment = larg; 1207 return (1); 1208 default: 1209 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1210 } 1211} 1212 1213long 1214SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1215{ 1216 switch (cmd) { 1217 case SSL_CTRL_SET_MSG_CALLBACK: 1218 ctx->msg_callback = (void (*)(int write_p, int version, 1219 int content_type, const void *buf, size_t len, SSL *ssl, 1220 void *arg))(fp); 1221 return (1); 1222 1223 default: 1224 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1225 } 1226} 1227 1228int 1229ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1230{ 1231 long l; 1232 1233 l = a->id - b->id; 1234 if (l == 0L) 1235 return (0); 1236 else 1237 return ((l > 0) ? 1:-1); 1238} 1239 1240int 1241ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1242 const SSL_CIPHER * const *bp) 1243{ 1244 long l; 1245 1246 l = (*ap)->id - (*bp)->id; 1247 if (l == 0L) 1248 return (0); 1249 else 1250 return ((l > 0) ? 1:-1); 1251} 1252 1253/* 1254 * Return a STACK of the ciphers available for the SSL and in order of 1255 * preference. 1256 */ 1257STACK_OF(SSL_CIPHER) * 1258SSL_get_ciphers(const SSL *s) 1259{ 1260 if (s != NULL) { 1261 if (s->cipher_list != NULL) { 1262 return (s->cipher_list); 1263 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1264 return (s->ctx->cipher_list); 1265 } 1266 } 1267 return (NULL); 1268} 1269 1270/* 1271 * Return a STACK of the ciphers available for the SSL and in order of 1272 * algorithm id. 1273 */ 1274STACK_OF(SSL_CIPHER) * 1275ssl_get_ciphers_by_id(SSL *s) 1276{ 1277 if (s != NULL) { 1278 if (s->cipher_list_by_id != NULL) { 1279 return (s->cipher_list_by_id); 1280 } else if ((s->ctx != NULL) && 1281 (s->ctx->cipher_list_by_id != NULL)) { 1282 return (s->ctx->cipher_list_by_id); 1283 } 1284 } 1285 return (NULL); 1286} 1287 1288/* The old interface to get the same thing as SSL_get_ciphers(). */ 1289const char * 1290SSL_get_cipher_list(const SSL *s, int n) 1291{ 1292 SSL_CIPHER *c; 1293 STACK_OF(SSL_CIPHER) *sk; 1294 1295 if (s == NULL) 1296 return (NULL); 1297 sk = SSL_get_ciphers(s); 1298 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1299 return (NULL); 1300 c = sk_SSL_CIPHER_value(sk, n); 1301 if (c == NULL) 1302 return (NULL); 1303 return (c->name); 1304} 1305 1306/* Specify the ciphers to be used by default by the SSL_CTX. */ 1307int 1308SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1309{ 1310 STACK_OF(SSL_CIPHER) *sk; 1311 1312 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1313 &ctx->cipher_list_by_id, str); 1314 /* 1315 * ssl_create_cipher_list may return an empty stack if it 1316 * was unable to find a cipher matching the given rule string 1317 * (for example if the rule string specifies a cipher which 1318 * has been disabled). This is not an error as far as 1319 * ssl_create_cipher_list is concerned, and hence 1320 * ctx->cipher_list and ctx->cipher_list_by_id has been 1321 * updated. 1322 */ 1323 if (sk == NULL) 1324 return (0); 1325 else if (sk_SSL_CIPHER_num(sk) == 0) { 1326 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1327 SSL_R_NO_CIPHER_MATCH); 1328 return (0); 1329 } 1330 return (1); 1331} 1332 1333/* Specify the ciphers to be used by the SSL. */ 1334int 1335SSL_set_cipher_list(SSL *s, const char *str) 1336{ 1337 STACK_OF(SSL_CIPHER) *sk; 1338 1339 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1340 &s->cipher_list_by_id, str); 1341 /* see comment in SSL_CTX_set_cipher_list */ 1342 if (sk == NULL) 1343 return (0); 1344 else if (sk_SSL_CIPHER_num(sk) == 0) { 1345 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1346 SSL_R_NO_CIPHER_MATCH); 1347 return (0); 1348 } 1349 return (1); 1350} 1351 1352/* works well for SSLv2, not so good for SSLv3 */ 1353char * 1354SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1355{ 1356 char *end; 1357 STACK_OF(SSL_CIPHER) *sk; 1358 SSL_CIPHER *c; 1359 size_t curlen = 0; 1360 int i; 1361 1362 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1363 (len < 2)) 1364 return (NULL); 1365 1366 sk = s->session->ciphers; 1367 buf[0] = '\0'; 1368 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1369 c = sk_SSL_CIPHER_value(sk, i); 1370 end = buf + curlen; 1371 if (strlcat(buf, c->name, len) >= len || 1372 (curlen = strlcat(buf, ":", len)) >= len) { 1373 /* remove truncated cipher from list */ 1374 *end = '\0'; 1375 break; 1376 } 1377 } 1378 /* remove trailing colon */ 1379 if ((end = strrchr(buf, ':')) != NULL) 1380 *end = '\0'; 1381 return (buf); 1382} 1383 1384int 1385ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1386{ 1387 int i; 1388 SSL_CIPHER *c; 1389 unsigned char *q; 1390 1391 if (sk == NULL) 1392 return (0); 1393 q = p; 1394 1395 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1396 c = sk_SSL_CIPHER_value(sk, i); 1397 1398 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1399 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1400 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1401 continue; 1402 1403 s2n(ssl3_cipher_get_value(c), p); 1404 } 1405 1406 /* 1407 * If p == q, no ciphers and caller indicates an error. Otherwise 1408 * add SCSV if not renegotiating. 1409 */ 1410 if (p != q && !s->renegotiate) { 1411 static SSL_CIPHER scsv = { 1412 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1413 }; 1414 s2n(ssl3_cipher_get_value(&scsv), p); 1415 } 1416 1417 return (p - q); 1418} 1419 1420STACK_OF(SSL_CIPHER) * 1421ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1422 STACK_OF(SSL_CIPHER) **skp) 1423{ 1424 const SSL_CIPHER *c; 1425 STACK_OF(SSL_CIPHER) *sk; 1426 int i; 1427 unsigned int cipher_id; 1428 uint16_t cipher_value; 1429 1430 if (s->s3) 1431 s->s3->send_connection_binding = 0; 1432 1433 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1434 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1435 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1436 return (NULL); 1437 } 1438 if (skp == NULL || *skp == NULL) { 1439 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1440 if (sk == NULL) 1441 goto err; 1442 } else { 1443 sk = *skp; 1444 sk_SSL_CIPHER_zero(sk); 1445 } 1446 1447 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1448 n2s(p, cipher_value); 1449 cipher_id = SSL3_CK_ID | cipher_value; 1450 1451 /* Check for SCSV */ 1452 if (s->s3 && cipher_id == SSL3_CK_SCSV) { 1453 /* SCSV is fatal if renegotiating. */ 1454 if (s->renegotiate) { 1455 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1456 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1457 ssl3_send_alert(s, SSL3_AL_FATAL, 1458 SSL_AD_HANDSHAKE_FAILURE); 1459 1460 goto err; 1461 } 1462 s->s3->send_connection_binding = 1; 1463 continue; 1464 } 1465 1466 c = ssl3_get_cipher_by_id(cipher_id); 1467 if (c != NULL) { 1468 if (!sk_SSL_CIPHER_push(sk, c)) { 1469 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1470 ERR_R_MALLOC_FAILURE); 1471 goto err; 1472 } 1473 } 1474 } 1475 1476 if (skp != NULL) 1477 *skp = sk; 1478 return (sk); 1479 1480err: 1481 if (skp == NULL || *skp == NULL) 1482 sk_SSL_CIPHER_free(sk); 1483 return (NULL); 1484} 1485 1486 1487/* 1488 * Return a servername extension value if provided in Client Hello, or NULL. 1489 * So far, only host_name types are defined (RFC 3546). 1490 */ 1491const char * 1492SSL_get_servername(const SSL *s, const int type) 1493{ 1494 if (type != TLSEXT_NAMETYPE_host_name) 1495 return (NULL); 1496 1497 return (s->session && !s->tlsext_hostname ? 1498 s->session->tlsext_hostname : 1499 s->tlsext_hostname); 1500} 1501 1502int 1503SSL_get_servername_type(const SSL *s) 1504{ 1505 if (s->session && 1506 (!s->tlsext_hostname ? 1507 s->session->tlsext_hostname : s->tlsext_hostname)) 1508 return (TLSEXT_NAMETYPE_host_name); 1509 return (-1); 1510} 1511 1512# ifndef OPENSSL_NO_NEXTPROTONEG 1513/* 1514 * SSL_select_next_proto implements the standard protocol selection. It is 1515 * expected that this function is called from the callback set by 1516 * SSL_CTX_set_next_proto_select_cb. 1517 * 1518 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1519 * strings. The length byte itself is not included in the length. A byte 1520 * string of length 0 is invalid. No byte string may be truncated. 1521 * 1522 * The current, but experimental algorithm for selecting the protocol is: 1523 * 1524 * 1) If the server doesn't support NPN then this is indicated to the 1525 * callback. In this case, the client application has to abort the connection 1526 * or have a default application level protocol. 1527 * 1528 * 2) If the server supports NPN, but advertises an empty list then the 1529 * client selects the first protcol in its list, but indicates via the 1530 * API that this fallback case was enacted. 1531 * 1532 * 3) Otherwise, the client finds the first protocol in the server's list 1533 * that it supports and selects this protocol. This is because it's 1534 * assumed that the server has better information about which protocol 1535 * a client should use. 1536 * 1537 * 4) If the client doesn't support any of the server's advertised 1538 * protocols, then this is treated the same as case 2. 1539 * 1540 * It returns either 1541 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1542 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1543 */ 1544int 1545SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1546 const unsigned char *server, unsigned int server_len, 1547 const unsigned char *client, unsigned int client_len) 1548{ 1549 unsigned int i, j; 1550 const unsigned char *result; 1551 int status = OPENSSL_NPN_UNSUPPORTED; 1552 1553 /* 1554 * For each protocol in server preference order, 1555 * see if we support it. 1556 */ 1557 for (i = 0; i < server_len; ) { 1558 for (j = 0; j < client_len; ) { 1559 if (server[i] == client[j] && 1560 memcmp(&server[i + 1], 1561 &client[j + 1], server[i]) == 0) { 1562 /* We found a match */ 1563 result = &server[i]; 1564 status = OPENSSL_NPN_NEGOTIATED; 1565 goto found; 1566 } 1567 j += client[j]; 1568 j++; 1569 } 1570 i += server[i]; 1571 i++; 1572 } 1573 1574 /* There's no overlap between our protocols and the server's list. */ 1575 result = client; 1576 status = OPENSSL_NPN_NO_OVERLAP; 1577 1578found: 1579 *out = (unsigned char *) result + 1; 1580 *outlen = result[0]; 1581 return (status); 1582} 1583 1584/* 1585 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1586 * requested protocol for this connection and returns 0. If the client didn't 1587 * request any protocol, then *data is set to NULL. 1588 * 1589 * Note that the client can request any protocol it chooses. The value returned 1590 * from this function need not be a member of the list of supported protocols 1591 * provided by the callback. 1592 */ 1593void 1594SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1595 unsigned *len) 1596{ 1597 *data = s->next_proto_negotiated; 1598 if (!*data) { 1599 *len = 0; 1600 } else { 1601 *len = s->next_proto_negotiated_len; 1602 } 1603} 1604 1605/* 1606 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1607 * TLS server needs a list of supported protocols for Next Protocol 1608 * Negotiation. The returned list must be in wire format. The list is returned 1609 * by setting |out| to point to it and |outlen| to its length. This memory will 1610 * not be modified, but one should assume that the SSL* keeps a reference to 1611 * it. 1612 * 1613 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1614 * Otherwise, no such extension will be included in the ServerHello. 1615 */ 1616void 1617SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1618 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1619{ 1620 ctx->next_protos_advertised_cb = cb; 1621 ctx->next_protos_advertised_cb_arg = arg; 1622} 1623 1624/* 1625 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1626 * client needs to select a protocol from the server's provided list. |out| 1627 * must be set to point to the selected protocol (which may be within |in|). 1628 * The length of the protocol name must be written into |outlen|. The server's 1629 * advertised protocols are provided in |in| and |inlen|. The callback can 1630 * assume that |in| is syntactically valid. 1631 * 1632 * The client must select a protocol. It is fatal to the connection if this 1633 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1634 */ 1635void 1636SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1637 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1638 unsigned int inlen, void *arg), void *arg) 1639{ 1640 ctx->next_proto_select_cb = cb; 1641 ctx->next_proto_select_cb_arg = arg; 1642} 1643# endif 1644 1645/* 1646 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1647 * protocols, which must be in wire-format (i.e. a series of non-empty, 1648 * 8-bit length-prefixed strings). Returns 0 on success. 1649 */ 1650int 1651SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1652 unsigned int protos_len) 1653{ 1654 free(ctx->alpn_client_proto_list); 1655 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1656 return (1); 1657 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1658 ctx->alpn_client_proto_list_len = protos_len; 1659 1660 return (0); 1661} 1662 1663/* 1664 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1665 * protocols, which must be in wire-format (i.e. a series of non-empty, 1666 * 8-bit length-prefixed strings). Returns 0 on success. 1667 */ 1668int 1669SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1670 unsigned int protos_len) 1671{ 1672 free(ssl->alpn_client_proto_list); 1673 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1674 return (1); 1675 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1676 ssl->alpn_client_proto_list_len = protos_len; 1677 1678 return (0); 1679} 1680 1681/* 1682 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1683 * ClientHello processing in order to select an ALPN protocol from the 1684 * client's list of offered protocols. 1685 */ 1686void 1687SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1688 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1689 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1690{ 1691 ctx->alpn_select_cb = cb; 1692 ctx->alpn_select_cb_arg = arg; 1693} 1694 1695/* 1696 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1697 * it sets data to point to len bytes of protocol name (not including the 1698 * leading length-prefix byte). If the server didn't respond with* a negotiated 1699 * protocol then len will be zero. 1700 */ 1701void 1702SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1703 unsigned *len) 1704{ 1705 *data = NULL; 1706 *len = 0; 1707 1708 if (ssl->s3 != NULL) { 1709 *data = ssl->s3->alpn_selected; 1710 *len = ssl->s3->alpn_selected_len; 1711 } 1712} 1713 1714int 1715SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1716 const char *label, size_t llen, const unsigned char *p, size_t plen, 1717 int use_context) 1718{ 1719 if (s->version < TLS1_VERSION) 1720 return (-1); 1721 1722 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1723 label, llen, p, plen, use_context)); 1724} 1725 1726static unsigned long 1727ssl_session_hash(const SSL_SESSION *a) 1728{ 1729 unsigned long l; 1730 1731 l = (unsigned long) 1732 ((unsigned int) a->session_id[0] )| 1733 ((unsigned int) a->session_id[1]<< 8L)| 1734 ((unsigned long)a->session_id[2]<<16L)| 1735 ((unsigned long)a->session_id[3]<<24L); 1736 return (l); 1737} 1738 1739/* 1740 * NB: If this function (or indeed the hash function which uses a sort of 1741 * coarser function than this one) is changed, ensure 1742 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1743 * able to construct an SSL_SESSION that will collide with any existing session 1744 * with a matching session ID. 1745 */ 1746static int 1747ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1748{ 1749 if (a->ssl_version != b->ssl_version) 1750 return (1); 1751 if (a->session_id_length != b->session_id_length) 1752 return (1); 1753 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1754 return (1); 1755 return (0); 1756} 1757 1758/* 1759 * These wrapper functions should remain rather than redeclaring 1760 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1761 * variable. The reason is that the functions aren't static, they're exposed via 1762 * ssl.h. 1763 */ 1764static 1765IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1766static 1767IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1768 1769SSL_CTX * 1770SSL_CTX_new(const SSL_METHOD *meth) 1771{ 1772 SSL_CTX *ret = NULL; 1773 1774 if (meth == NULL) { 1775 SSLerr(SSL_F_SSL_CTX_NEW, 1776 SSL_R_NULL_SSL_METHOD_PASSED); 1777 return (NULL); 1778 } 1779 1780 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1781 SSLerr(SSL_F_SSL_CTX_NEW, 1782 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1783 goto err; 1784 } 1785 ret = calloc(1, sizeof(SSL_CTX)); 1786 if (ret == NULL) 1787 goto err; 1788 1789 ret->method = meth; 1790 1791 ret->cert_store = NULL; 1792 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1793 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1794 ret->session_cache_head = NULL; 1795 ret->session_cache_tail = NULL; 1796 1797 /* We take the system default */ 1798 ret->session_timeout = meth->get_timeout(); 1799 1800 ret->new_session_cb = 0; 1801 ret->remove_session_cb = 0; 1802 ret->get_session_cb = 0; 1803 ret->generate_session_id = 0; 1804 1805 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1806 1807 ret->references = 1; 1808 ret->quiet_shutdown = 0; 1809 1810 ret->info_callback = NULL; 1811 1812 ret->app_verify_callback = 0; 1813 ret->app_verify_arg = NULL; 1814 1815 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1816 ret->read_ahead = 0; 1817 ret->msg_callback = 0; 1818 ret->msg_callback_arg = NULL; 1819 ret->verify_mode = SSL_VERIFY_NONE; 1820 ret->sid_ctx_length = 0; 1821 ret->default_verify_callback = NULL; 1822 if ((ret->cert = ssl_cert_new()) == NULL) 1823 goto err; 1824 1825 ret->default_passwd_callback = 0; 1826 ret->default_passwd_callback_userdata = NULL; 1827 ret->client_cert_cb = 0; 1828 ret->app_gen_cookie_cb = 0; 1829 ret->app_verify_cookie_cb = 0; 1830 1831 ret->sessions = lh_SSL_SESSION_new(); 1832 if (ret->sessions == NULL) 1833 goto err; 1834 ret->cert_store = X509_STORE_new(); 1835 if (ret->cert_store == NULL) 1836 goto err; 1837 1838 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1839 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1840 if (ret->cipher_list == NULL || 1841 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1842 SSLerr(SSL_F_SSL_CTX_NEW, 1843 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1844 goto err2; 1845 } 1846 1847 ret->param = X509_VERIFY_PARAM_new(); 1848 if (!ret->param) 1849 goto err; 1850 1851 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1852 SSLerr(SSL_F_SSL_CTX_NEW, 1853 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1854 goto err2; 1855 } 1856 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1857 SSLerr(SSL_F_SSL_CTX_NEW, 1858 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1859 goto err2; 1860 } 1861 1862 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1863 goto err; 1864 1865 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1866 1867 ret->extra_certs = NULL; 1868 1869 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1870 1871 ret->tlsext_servername_callback = 0; 1872 ret->tlsext_servername_arg = NULL; 1873 1874 /* Setup RFC4507 ticket keys */ 1875 arc4random_buf(ret->tlsext_tick_key_name, 16); 1876 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1877 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1878 1879 ret->tlsext_status_cb = 0; 1880 ret->tlsext_status_arg = NULL; 1881 1882# ifndef OPENSSL_NO_NEXTPROTONEG 1883 ret->next_protos_advertised_cb = 0; 1884 ret->next_proto_select_cb = 0; 1885# endif 1886#ifndef OPENSSL_NO_ENGINE 1887 ret->client_cert_engine = NULL; 1888#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1889#define eng_strx(x) #x 1890#define eng_str(x) eng_strx(x) 1891 /* Use specific client engine automatically... ignore errors */ 1892 { 1893 ENGINE *eng; 1894 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1895 if (!eng) { 1896 ERR_clear_error(); 1897 ENGINE_load_builtin_engines(); 1898 eng = ENGINE_by_id(eng_str( 1899 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1900 } 1901 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1902 ERR_clear_error(); 1903 } 1904#endif 1905#endif 1906 /* 1907 * Default is to connect to non-RI servers. When RI is more widely 1908 * deployed might change this. 1909 */ 1910 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1911 1912 /* Disable SSLv3 by default. */ 1913 ret->options |= SSL_OP_NO_SSLv3; 1914 1915 return (ret); 1916err: 1917 SSLerr(SSL_F_SSL_CTX_NEW, 1918 ERR_R_MALLOC_FAILURE); 1919err2: 1920 SSL_CTX_free(ret); 1921 return (NULL); 1922} 1923 1924void 1925SSL_CTX_free(SSL_CTX *a) 1926{ 1927 int i; 1928 1929 if (a == NULL) 1930 return; 1931 1932 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1933 if (i > 0) 1934 return; 1935 1936 if (a->param) 1937 X509_VERIFY_PARAM_free(a->param); 1938 1939 /* 1940 * Free internal session cache. However: the remove_cb() may reference 1941 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1942 * after the sessions were flushed. 1943 * As the ex_data handling routines might also touch the session cache, 1944 * the most secure solution seems to be: empty (flush) the cache, then 1945 * free ex_data, then finally free the cache. 1946 * (See ticket [openssl.org #212].) 1947 */ 1948 if (a->sessions != NULL) 1949 SSL_CTX_flush_sessions(a, 0); 1950 1951 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1952 1953 if (a->sessions != NULL) 1954 lh_SSL_SESSION_free(a->sessions); 1955 1956 if (a->cert_store != NULL) 1957 X509_STORE_free(a->cert_store); 1958 if (a->cipher_list != NULL) 1959 sk_SSL_CIPHER_free(a->cipher_list); 1960 if (a->cipher_list_by_id != NULL) 1961 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1962 if (a->cert != NULL) 1963 ssl_cert_free(a->cert); 1964 if (a->client_CA != NULL) 1965 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1966 if (a->extra_certs != NULL) 1967 sk_X509_pop_free(a->extra_certs, X509_free); 1968 1969#ifndef OPENSSL_NO_SRTP 1970 if (a->srtp_profiles) 1971 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1972#endif 1973 1974#ifndef OPENSSL_NO_ENGINE 1975 if (a->client_cert_engine) 1976 ENGINE_finish(a->client_cert_engine); 1977#endif 1978 1979 free(a->alpn_client_proto_list); 1980 1981 free(a); 1982} 1983 1984void 1985SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1986{ 1987 ctx->default_passwd_callback = cb; 1988} 1989 1990void 1991SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1992{ 1993 ctx->default_passwd_callback_userdata = u; 1994} 1995 1996void 1997SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1998 void *), void *arg) 1999{ 2000 ctx->app_verify_callback = cb; 2001 ctx->app_verify_arg = arg; 2002} 2003 2004void 2005SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2006{ 2007 ctx->verify_mode = mode; 2008 ctx->default_verify_callback = cb; 2009} 2010 2011void 2012SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2013{ 2014 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2015} 2016 2017void 2018ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2019{ 2020 CERT_PKEY *cpk; 2021 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2022 unsigned long mask_k, mask_a; 2023 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2024 int have_ecdh_tmp; 2025 X509 *x = NULL; 2026 EVP_PKEY *ecc_pkey = NULL; 2027 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2028 2029 if (c == NULL) 2030 return; 2031 2032 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2033 c->dh_tmp_auto != 0); 2034 2035 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2036 c->ecdh_tmp_auto != 0); 2037 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2038 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2039 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2040 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2041 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2042 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2043/* FIX THIS EAY EAY EAY */ 2044 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2045 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2046 mask_k = 0; 2047 mask_a = 0; 2048 2049 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2050 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2051 mask_k |= SSL_kGOST; 2052 mask_a |= SSL_aGOST01; 2053 } 2054 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2055 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2056 mask_k |= SSL_kGOST; 2057 mask_a |= SSL_aGOST94; 2058 } 2059 2060 if (rsa_enc) 2061 mask_k|=SSL_kRSA; 2062 2063 if (dh_tmp) 2064 mask_k|=SSL_kDHE; 2065 2066 if (rsa_enc || rsa_sign) 2067 mask_a|=SSL_aRSA; 2068 2069 if (dsa_sign) 2070 mask_a|=SSL_aDSS; 2071 2072 mask_a|=SSL_aNULL; 2073 2074 /* 2075 * An ECC certificate may be usable for ECDH and/or 2076 * ECDSA cipher suites depending on the key usage extension. 2077 */ 2078 if (have_ecc_cert) { 2079 /* This call populates extension flags (ex_flags) */ 2080 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2081 X509_check_purpose(x, -1, 0); 2082 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2083 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2084 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2085 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2086 ecc_pkey = X509_get_pubkey(x); 2087 EVP_PKEY_free(ecc_pkey); 2088 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2089 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2090 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2091 } 2092 if (ecdh_ok) { 2093 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2094 mask_k|=SSL_kECDHr; 2095 mask_a|=SSL_aECDH; 2096 } 2097 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2098 mask_k|=SSL_kECDHe; 2099 mask_a|=SSL_aECDH; 2100 } 2101 } 2102 if (ecdsa_ok) 2103 mask_a|=SSL_aECDSA; 2104 } 2105 2106 if (have_ecdh_tmp) { 2107 mask_k|=SSL_kECDHE; 2108 } 2109 2110 2111 c->mask_k = mask_k; 2112 c->mask_a = mask_a; 2113 c->valid = 1; 2114} 2115 2116/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2117#define ku_reject(x, usage) \ 2118 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2119 2120 2121int 2122ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2123{ 2124 unsigned long alg_k, alg_a; 2125 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2126 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2127 2128 alg_k = cs->algorithm_mkey; 2129 alg_a = cs->algorithm_auth; 2130 2131 /* This call populates the ex_flags field correctly */ 2132 X509_check_purpose(x, -1, 0); 2133 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2134 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2135 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2136 } 2137 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2138 /* key usage, if present, must allow key agreement */ 2139 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2140 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2141 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2142 return (0); 2143 } 2144 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2145 TLS1_2_VERSION) { 2146 /* signature alg must be ECDSA */ 2147 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2148 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2149 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2150 return (0); 2151 } 2152 } 2153 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2154 TLS1_2_VERSION) { 2155 /* signature alg must be RSA */ 2156 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2157 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2158 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2159 return (0); 2160 } 2161 } 2162 } 2163 if (alg_a & SSL_aECDSA) { 2164 /* key usage, if present, must allow signing */ 2165 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2166 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2167 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2168 return (0); 2169 } 2170 } 2171 2172 return (1); 2173 /* all checks are ok */ 2174} 2175 2176 2177/* THIS NEEDS CLEANING UP */ 2178CERT_PKEY * 2179ssl_get_server_send_pkey(const SSL *s) 2180{ 2181 unsigned long alg_k, alg_a; 2182 CERT *c; 2183 int i; 2184 2185 c = s->cert; 2186 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2187 2188 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2189 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2190 2191 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2192 /* 2193 * We don't need to look at SSL_kECDHE 2194 * since no certificate is needed for 2195 * anon ECDH and for authenticated 2196 * ECDHE, the check for the auth 2197 * algorithm will set i correctly 2198 * NOTE: For ECDH-RSA, we need an ECC 2199 * not an RSA cert but for EECDH-RSA 2200 * we need an RSA cert. Placing the 2201 * checks for SSL_kECDH before RSA 2202 * checks ensures the correct cert is chosen. 2203 */ 2204 i = SSL_PKEY_ECC; 2205 } else if (alg_a & SSL_aECDSA) { 2206 i = SSL_PKEY_ECC; 2207 } else if (alg_a & SSL_aDSS) { 2208 i = SSL_PKEY_DSA_SIGN; 2209 } else if (alg_a & SSL_aRSA) { 2210 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2211 i = SSL_PKEY_RSA_SIGN; 2212 else 2213 i = SSL_PKEY_RSA_ENC; 2214 } else if (alg_a & SSL_aGOST94) { 2215 i = SSL_PKEY_GOST94; 2216 } else if (alg_a & SSL_aGOST01) { 2217 i = SSL_PKEY_GOST01; 2218 } else { /* if (alg_a & SSL_aNULL) */ 2219 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2220 return (NULL); 2221 } 2222 2223 return (c->pkeys + i); 2224} 2225 2226X509 * 2227ssl_get_server_send_cert(const SSL *s) 2228{ 2229 CERT_PKEY *cpk; 2230 2231 cpk = ssl_get_server_send_pkey(s); 2232 if (!cpk) 2233 return (NULL); 2234 return (cpk->x509); 2235} 2236 2237EVP_PKEY * 2238ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2239{ 2240 unsigned long alg_a; 2241 CERT *c; 2242 int idx = -1; 2243 2244 alg_a = cipher->algorithm_auth; 2245 c = s->cert; 2246 2247 if ((alg_a & SSL_aDSS) && 2248 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2249 idx = SSL_PKEY_DSA_SIGN; 2250 else if (alg_a & SSL_aRSA) { 2251 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2252 idx = SSL_PKEY_RSA_SIGN; 2253 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2254 idx = SSL_PKEY_RSA_ENC; 2255 } else if ((alg_a & SSL_aECDSA) && 2256 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2257 idx = SSL_PKEY_ECC; 2258 if (idx == -1) { 2259 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2260 return (NULL); 2261 } 2262 if (pmd) 2263 *pmd = c->pkeys[idx].digest; 2264 return (c->pkeys[idx].privatekey); 2265} 2266 2267DH * 2268ssl_get_auto_dh(SSL *s) 2269{ 2270 CERT_PKEY *cpk; 2271 int keylen; 2272 DH *dhp; 2273 2274 if (s->cert->dh_tmp_auto == 2) { 2275 keylen = 1024; 2276 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2277 keylen = 1024; 2278 if (s->s3->tmp.new_cipher->strength_bits == 256) 2279 keylen = 3072; 2280 } else { 2281 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2282 return (NULL); 2283 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2284 return (NULL); 2285 keylen = EVP_PKEY_bits(cpk->privatekey); 2286 } 2287 2288 if ((dhp = DH_new()) == NULL) 2289 return (NULL); 2290 2291 dhp->g = BN_new(); 2292 if (dhp->g != NULL) 2293 BN_set_word(dhp->g, 2); 2294 2295 if (keylen >= 8192) 2296 dhp->p = get_rfc3526_prime_8192(NULL); 2297 else if (keylen >= 4096) 2298 dhp->p = get_rfc3526_prime_4096(NULL); 2299 else if (keylen >= 3072) 2300 dhp->p = get_rfc3526_prime_3072(NULL); 2301 else if (keylen >= 2048) 2302 dhp->p = get_rfc3526_prime_2048(NULL); 2303 else if (keylen >= 1536) 2304 dhp->p = get_rfc3526_prime_1536(NULL); 2305 else 2306 dhp->p = get_rfc2409_prime_1024(NULL); 2307 2308 if (dhp->p == NULL || dhp->g == NULL) { 2309 DH_free(dhp); 2310 return (NULL); 2311 } 2312 return (dhp); 2313} 2314 2315void 2316ssl_update_cache(SSL *s, int mode) 2317{ 2318 int i; 2319 2320 /* 2321 * If the session_id_length is 0, we are not supposed to cache it, 2322 * and it would be rather hard to do anyway :-) 2323 */ 2324 if (s->session->session_id_length == 0) 2325 return; 2326 2327 i = s->session_ctx->session_cache_mode; 2328 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2329 || SSL_CTX_add_session(s->session_ctx, s->session)) 2330 && (s->session_ctx->new_session_cb != NULL)) { 2331 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2332 if (!s->session_ctx->new_session_cb(s, s->session)) 2333 SSL_SESSION_free(s->session); 2334 } 2335 2336 /* auto flush every 255 connections */ 2337 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2338 ((i & mode) == mode)) { 2339 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2340 s->session_ctx->stats.sess_connect_good : 2341 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2342 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2343 } 2344 } 2345} 2346 2347const SSL_METHOD * 2348SSL_get_ssl_method(SSL *s) 2349{ 2350 return (s->method); 2351} 2352 2353int 2354SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2355{ 2356 int conn = -1; 2357 int ret = 1; 2358 2359 if (s->method != meth) { 2360 if (s->handshake_func != NULL) 2361 conn = (s->handshake_func == s->method->ssl_connect); 2362 2363 if (s->method->version == meth->version) 2364 s->method = meth; 2365 else { 2366 s->method->ssl_free(s); 2367 s->method = meth; 2368 ret = s->method->ssl_new(s); 2369 } 2370 2371 if (conn == 1) 2372 s->handshake_func = meth->ssl_connect; 2373 else if (conn == 0) 2374 s->handshake_func = meth->ssl_accept; 2375 } 2376 return (ret); 2377} 2378 2379int 2380SSL_get_error(const SSL *s, int i) 2381{ 2382 int reason; 2383 unsigned long l; 2384 BIO *bio; 2385 2386 if (i > 0) 2387 return (SSL_ERROR_NONE); 2388 2389 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2390 * etc, where we do encode the error */ 2391 if ((l = ERR_peek_error()) != 0) { 2392 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2393 return (SSL_ERROR_SYSCALL); 2394 else 2395 return (SSL_ERROR_SSL); 2396 } 2397 2398 if ((i < 0) && SSL_want_read(s)) { 2399 bio = SSL_get_rbio(s); 2400 if (BIO_should_read(bio)) { 2401 return (SSL_ERROR_WANT_READ); 2402 } else if (BIO_should_write(bio)) { 2403 /* 2404 * This one doesn't make too much sense... We never 2405 * try to write to the rbio, and an application 2406 * program where rbio and wbio are separate couldn't 2407 * even know what it should wait for. However if we 2408 * ever set s->rwstate incorrectly (so that we have 2409 * SSL_want_read(s) instead of SSL_want_write(s)) 2410 * and rbio and wbio *are* the same, this test works 2411 * around that bug; so it might be safer to keep it. 2412 */ 2413 return (SSL_ERROR_WANT_WRITE); 2414 } else if (BIO_should_io_special(bio)) { 2415 reason = BIO_get_retry_reason(bio); 2416 if (reason == BIO_RR_CONNECT) 2417 return (SSL_ERROR_WANT_CONNECT); 2418 else if (reason == BIO_RR_ACCEPT) 2419 return (SSL_ERROR_WANT_ACCEPT); 2420 else 2421 return (SSL_ERROR_SYSCALL); /* unknown */ 2422 } 2423 } 2424 2425 if ((i < 0) && SSL_want_write(s)) { 2426 bio = SSL_get_wbio(s); 2427 if (BIO_should_write(bio)) { 2428 return (SSL_ERROR_WANT_WRITE); 2429 } else if (BIO_should_read(bio)) { 2430 /* 2431 * See above (SSL_want_read(s) with 2432 * BIO_should_write(bio)) 2433 */ 2434 return (SSL_ERROR_WANT_READ); 2435 } else if (BIO_should_io_special(bio)) { 2436 reason = BIO_get_retry_reason(bio); 2437 if (reason == BIO_RR_CONNECT) 2438 return (SSL_ERROR_WANT_CONNECT); 2439 else if (reason == BIO_RR_ACCEPT) 2440 return (SSL_ERROR_WANT_ACCEPT); 2441 else 2442 return (SSL_ERROR_SYSCALL); 2443 } 2444 } 2445 if ((i < 0) && SSL_want_x509_lookup(s)) { 2446 return (SSL_ERROR_WANT_X509_LOOKUP); 2447 } 2448 2449 if (i == 0) { 2450 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2451 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2452 return (SSL_ERROR_ZERO_RETURN); 2453 } 2454 return (SSL_ERROR_SYSCALL); 2455} 2456 2457int 2458SSL_do_handshake(SSL *s) 2459{ 2460 int ret = 1; 2461 2462 if (s->handshake_func == NULL) { 2463 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2464 SSL_R_CONNECTION_TYPE_NOT_SET); 2465 return (-1); 2466 } 2467 2468 s->method->ssl_renegotiate_check(s); 2469 2470 if (SSL_in_init(s) || SSL_in_before(s)) { 2471 ret = s->handshake_func(s); 2472 } 2473 return (ret); 2474} 2475 2476/* 2477 * For the next 2 functions, SSL_clear() sets shutdown and so 2478 * one of these calls will reset it 2479 */ 2480void 2481SSL_set_accept_state(SSL *s) 2482{ 2483 s->server = 1; 2484 s->shutdown = 0; 2485 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2486 s->handshake_func = s->method->ssl_accept; 2487 /* clear the current cipher */ 2488 ssl_clear_cipher_ctx(s); 2489 ssl_clear_hash_ctx(&s->read_hash); 2490 ssl_clear_hash_ctx(&s->write_hash); 2491} 2492 2493void 2494SSL_set_connect_state(SSL *s) 2495{ 2496 s->server = 0; 2497 s->shutdown = 0; 2498 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2499 s->handshake_func = s->method->ssl_connect; 2500 /* clear the current cipher */ 2501 ssl_clear_cipher_ctx(s); 2502 ssl_clear_hash_ctx(&s->read_hash); 2503 ssl_clear_hash_ctx(&s->write_hash); 2504} 2505 2506int 2507ssl_undefined_function(SSL *s) 2508{ 2509 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2510 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2511 return (0); 2512} 2513 2514int 2515ssl_undefined_void_function(void) 2516{ 2517 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2518 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2519 return (0); 2520} 2521 2522int 2523ssl_undefined_const_function(const SSL *s) 2524{ 2525 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2526 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2527 return (0); 2528} 2529 2530SSL_METHOD * 2531ssl_bad_method(int ver) 2532{ 2533 SSLerr(SSL_F_SSL_BAD_METHOD, 2534 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2535 return (NULL); 2536} 2537 2538const char * 2539ssl_version_string(int ver) 2540{ 2541 switch (ver) { 2542 case DTLS1_BAD_VER: 2543 return (SSL_TXT_DTLS1_BAD); 2544 case DTLS1_VERSION: 2545 return (SSL_TXT_DTLS1); 2546 case SSL3_VERSION: 2547 return (SSL_TXT_SSLV3); 2548 case TLS1_VERSION: 2549 return (SSL_TXT_TLSV1); 2550 case TLS1_1_VERSION: 2551 return (SSL_TXT_TLSV1_1); 2552 case TLS1_2_VERSION: 2553 return (SSL_TXT_TLSV1_2); 2554 default: 2555 return ("unknown"); 2556 } 2557} 2558 2559const char * 2560SSL_get_version(const SSL *s) 2561{ 2562 return ssl_version_string(s->version); 2563} 2564 2565SSL * 2566SSL_dup(SSL *s) 2567{ 2568 STACK_OF(X509_NAME) *sk; 2569 X509_NAME *xn; 2570 SSL *ret; 2571 int i; 2572 2573 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2574 return (NULL); 2575 2576 ret->version = s->version; 2577 ret->type = s->type; 2578 ret->method = s->method; 2579 2580 if (s->session != NULL) { 2581 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2582 SSL_copy_session_id(ret, s); 2583 } else { 2584 /* 2585 * No session has been established yet, so we have to expect 2586 * that s->cert or ret->cert will be changed later -- 2587 * they should not both point to the same object, 2588 * and thus we can't use SSL_copy_session_id. 2589 */ 2590 2591 ret->method->ssl_free(ret); 2592 ret->method = s->method; 2593 ret->method->ssl_new(ret); 2594 2595 if (s->cert != NULL) { 2596 if (ret->cert != NULL) { 2597 ssl_cert_free(ret->cert); 2598 } 2599 ret->cert = ssl_cert_dup(s->cert); 2600 if (ret->cert == NULL) 2601 goto err; 2602 } 2603 2604 SSL_set_session_id_context(ret, 2605 s->sid_ctx, s->sid_ctx_length); 2606 } 2607 2608 ret->options = s->options; 2609 ret->mode = s->mode; 2610 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2611 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2612 ret->msg_callback = s->msg_callback; 2613 ret->msg_callback_arg = s->msg_callback_arg; 2614 SSL_set_verify(ret, SSL_get_verify_mode(s), 2615 SSL_get_verify_callback(s)); 2616 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2617 ret->generate_session_id = s->generate_session_id; 2618 2619 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2620 2621 ret->debug = s->debug; 2622 2623 /* copy app data, a little dangerous perhaps */ 2624 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2625 &ret->ex_data, &s->ex_data)) 2626 goto err; 2627 2628 /* setup rbio, and wbio */ 2629 if (s->rbio != NULL) { 2630 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2631 goto err; 2632 } 2633 if (s->wbio != NULL) { 2634 if (s->wbio != s->rbio) { 2635 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2636 goto err; 2637 } else 2638 ret->wbio = ret->rbio; 2639 } 2640 ret->rwstate = s->rwstate; 2641 ret->in_handshake = s->in_handshake; 2642 ret->handshake_func = s->handshake_func; 2643 ret->server = s->server; 2644 ret->renegotiate = s->renegotiate; 2645 ret->new_session = s->new_session; 2646 ret->quiet_shutdown = s->quiet_shutdown; 2647 ret->shutdown = s->shutdown; 2648 /* SSL_dup does not really work at any state, though */ 2649 ret->state=s->state; 2650 ret->rstate = s->rstate; 2651 2652 /* 2653 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2654 * ret->init_off 2655 */ 2656 ret->init_num = 0; 2657 2658 ret->hit = s->hit; 2659 2660 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2661 2662 /* dup the cipher_list and cipher_list_by_id stacks */ 2663 if (s->cipher_list != NULL) { 2664 if ((ret->cipher_list = 2665 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2666 goto err; 2667 } 2668 if (s->cipher_list_by_id != NULL) { 2669 if ((ret->cipher_list_by_id = 2670 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2671 goto err; 2672 } 2673 2674 /* Dup the client_CA list */ 2675 if (s->client_CA != NULL) { 2676 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2677 ret->client_CA = sk; 2678 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2679 xn = sk_X509_NAME_value(sk, i); 2680 if (sk_X509_NAME_set(sk, i, 2681 X509_NAME_dup(xn)) == NULL) { 2682 X509_NAME_free(xn); 2683 goto err; 2684 } 2685 } 2686 } 2687 2688 if (0) { 2689err: 2690 if (ret != NULL) 2691 SSL_free(ret); 2692 ret = NULL; 2693 } 2694 return (ret); 2695} 2696 2697void 2698ssl_clear_cipher_ctx(SSL *s) 2699{ 2700 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2701 s->enc_read_ctx = NULL; 2702 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2703 s->enc_write_ctx = NULL; 2704 2705 if (s->aead_read_ctx != NULL) { 2706 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2707 free(s->aead_read_ctx); 2708 s->aead_read_ctx = NULL; 2709 } 2710 if (s->aead_write_ctx != NULL) { 2711 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2712 free(s->aead_write_ctx); 2713 s->aead_write_ctx = NULL; 2714 } 2715 2716} 2717 2718/* Fix this function so that it takes an optional type parameter */ 2719X509 * 2720SSL_get_certificate(const SSL *s) 2721{ 2722 if (s->cert != NULL) 2723 return (s->cert->key->x509); 2724 else 2725 return (NULL); 2726} 2727 2728/* Fix this function so that it takes an optional type parameter */ 2729EVP_PKEY * 2730SSL_get_privatekey(SSL *s) 2731{ 2732 if (s->cert != NULL) 2733 return (s->cert->key->privatekey); 2734 else 2735 return (NULL); 2736} 2737 2738const SSL_CIPHER * 2739SSL_get_current_cipher(const SSL *s) 2740{ 2741 if ((s->session != NULL) && (s->session->cipher != NULL)) 2742 return (s->session->cipher); 2743 return (NULL); 2744} 2745const void * 2746SSL_get_current_compression(SSL *s) 2747{ 2748 return (NULL); 2749} 2750 2751const void * 2752SSL_get_current_expansion(SSL *s) 2753{ 2754 return (NULL); 2755} 2756 2757int 2758ssl_init_wbio_buffer(SSL *s, int push) 2759{ 2760 BIO *bbio; 2761 2762 if (s->bbio == NULL) { 2763 bbio = BIO_new(BIO_f_buffer()); 2764 if (bbio == NULL) 2765 return (0); 2766 s->bbio = bbio; 2767 } else { 2768 bbio = s->bbio; 2769 if (s->bbio == s->wbio) 2770 s->wbio = BIO_pop(s->wbio); 2771 } 2772 (void)BIO_reset(bbio); 2773/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2774 if (!BIO_set_read_buffer_size(bbio, 1)) { 2775 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2776 ERR_R_BUF_LIB); 2777 return (0); 2778 } 2779 if (push) { 2780 if (s->wbio != bbio) 2781 s->wbio = BIO_push(bbio, s->wbio); 2782 } else { 2783 if (s->wbio == bbio) 2784 s->wbio = BIO_pop(bbio); 2785 } 2786 return (1); 2787} 2788 2789void 2790ssl_free_wbio_buffer(SSL *s) 2791{ 2792 if (s->bbio == NULL) 2793 return; 2794 2795 if (s->bbio == s->wbio) { 2796 /* remove buffering */ 2797 s->wbio = BIO_pop(s->wbio); 2798 } 2799 BIO_free(s->bbio); 2800 s->bbio = NULL; 2801} 2802 2803void 2804SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2805{ 2806 ctx->quiet_shutdown = mode; 2807} 2808 2809int 2810SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2811{ 2812 return (ctx->quiet_shutdown); 2813} 2814 2815void 2816SSL_set_quiet_shutdown(SSL *s, int mode) 2817{ 2818 s->quiet_shutdown = mode; 2819} 2820 2821int 2822SSL_get_quiet_shutdown(const SSL *s) 2823{ 2824 return (s->quiet_shutdown); 2825} 2826 2827void 2828SSL_set_shutdown(SSL *s, int mode) 2829{ 2830 s->shutdown = mode; 2831} 2832 2833int 2834SSL_get_shutdown(const SSL *s) 2835{ 2836 return (s->shutdown); 2837} 2838 2839int 2840SSL_version(const SSL *s) 2841{ 2842 return (s->version); 2843} 2844 2845SSL_CTX * 2846SSL_get_SSL_CTX(const SSL *ssl) 2847{ 2848 return (ssl->ctx); 2849} 2850 2851SSL_CTX * 2852SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2853{ 2854 if (ssl->ctx == ctx) 2855 return (ssl->ctx); 2856 if (ctx == NULL) 2857 ctx = ssl->initial_ctx; 2858 if (ssl->cert != NULL) 2859 ssl_cert_free(ssl->cert); 2860 ssl->cert = ssl_cert_dup(ctx->cert); 2861 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2862 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2863 ssl->ctx = ctx; 2864 return (ssl->ctx); 2865} 2866 2867int 2868SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2869{ 2870 return (X509_STORE_set_default_paths(ctx->cert_store)); 2871} 2872 2873int 2874SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2875 const char *CApath) 2876{ 2877 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2878} 2879 2880void 2881SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2882{ 2883 ssl->info_callback = cb; 2884} 2885 2886void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2887{ 2888 return (ssl->info_callback); 2889} 2890 2891int 2892SSL_state(const SSL *ssl) 2893{ 2894 return (ssl->state); 2895} 2896 2897void 2898SSL_set_state(SSL *ssl, int state) 2899{ 2900 ssl->state = state; 2901} 2902 2903void 2904SSL_set_verify_result(SSL *ssl, long arg) 2905{ 2906 ssl->verify_result = arg; 2907} 2908 2909long 2910SSL_get_verify_result(const SSL *ssl) 2911{ 2912 return (ssl->verify_result); 2913} 2914 2915int 2916SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2917 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2918{ 2919 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2920 new_func, dup_func, free_func)); 2921} 2922 2923int 2924SSL_set_ex_data(SSL *s, int idx, void *arg) 2925{ 2926 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2927} 2928 2929void * 2930SSL_get_ex_data(const SSL *s, int idx) 2931{ 2932 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2933} 2934 2935int 2936SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2937 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2938{ 2939 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2940 new_func, dup_func, free_func)); 2941} 2942 2943int 2944SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2945{ 2946 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2947} 2948 2949void * 2950SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2951{ 2952 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2953} 2954 2955int 2956ssl_ok(SSL *s) 2957{ 2958 return (1); 2959} 2960 2961X509_STORE * 2962SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2963{ 2964 return (ctx->cert_store); 2965} 2966 2967void 2968SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2969{ 2970 if (ctx->cert_store != NULL) 2971 X509_STORE_free(ctx->cert_store); 2972 ctx->cert_store = store; 2973} 2974 2975int 2976SSL_want(const SSL *s) 2977{ 2978 return (s->rwstate); 2979} 2980 2981void 2982SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2983 int keylength)) 2984{ 2985 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2986} 2987 2988void 2989SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2990 int keylength)) 2991{ 2992 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2993} 2994 2995void 2996SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2997 int keylength)) 2998{ 2999 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3000} 3001 3002void 3003SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3004 int keylength)) 3005{ 3006 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3007} 3008 3009void 3010SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3011 int is_export, int keylength)) 3012{ 3013 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3014 (void (*)(void))ecdh); 3015} 3016 3017void 3018SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3019 int keylength)) 3020{ 3021 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3022} 3023 3024 3025void 3026SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3027 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3028{ 3029 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3030 (void (*)(void))cb); 3031} 3032 3033void 3034SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3035 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3036{ 3037 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3038} 3039 3040/* 3041 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3042 * variable, freeing EVP_MD_CTX previously stored in that variable, if 3043 * any. If EVP_MD pointer is passed, initializes ctx with this md 3044 * Returns newly allocated ctx; 3045 */ 3046EVP_MD_CTX * 3047ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3048{ 3049 ssl_clear_hash_ctx(hash); 3050 *hash = EVP_MD_CTX_create(); 3051 if (*hash != NULL && md != NULL) 3052 EVP_DigestInit_ex(*hash, md, NULL); 3053 return (*hash); 3054} 3055 3056void 3057ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3058{ 3059 if (*hash) 3060 EVP_MD_CTX_destroy(*hash); 3061 *hash = NULL; 3062} 3063 3064void 3065SSL_set_debug(SSL *s, int debug) 3066{ 3067 s->debug = debug; 3068} 3069 3070int 3071SSL_cache_hit(SSL *s) 3072{ 3073 return (s->hit); 3074} 3075 3076IMPLEMENT_STACK_OF(SSL_CIPHER) 3077IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3078