1 /* $OpenBSD: ssl_lib.c,v 1.155 2017/01/26 12:16:13 beck Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <stdio.h> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #include "bytestring.h" 159 160 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162 int 163 SSL_clear(SSL *s) 164 { 165 if (s->method == NULL) { 166 SSLerror(SSL_R_NO_METHOD_SPECIFIED); 167 return (0); 168 } 169 170 if (ssl_clear_bad_session(s)) { 171 SSL_SESSION_free(s->session); 172 s->session = NULL; 173 } 174 175 s->error = 0; 176 s->internal->hit = 0; 177 s->internal->shutdown = 0; 178 179 if (s->internal->renegotiate) { 180 SSLerror(ERR_R_INTERNAL_ERROR); 181 return (0); 182 } 183 184 s->internal->type = 0; 185 186 s->internal->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 187 188 s->version = s->method->internal->version; 189 s->client_version = s->version; 190 s->internal->rwstate = SSL_NOTHING; 191 s->internal->rstate = SSL_ST_READ_HEADER; 192 193 BUF_MEM_free(s->internal->init_buf); 194 s->internal->init_buf = NULL; 195 196 ssl_clear_cipher_ctx(s); 197 ssl_clear_hash_ctx(&s->read_hash); 198 ssl_clear_hash_ctx(&s->internal->write_hash); 199 200 s->internal->first_packet = 0; 201 202 /* 203 * Check to see if we were changed into a different method, if 204 * so, revert back if we are not doing session-id reuse. 205 */ 206 if (!s->internal->in_handshake && (s->session == NULL) && 207 (s->method != s->ctx->method)) { 208 s->method->internal->ssl_free(s); 209 s->method = s->ctx->method; 210 if (!s->method->internal->ssl_new(s)) 211 return (0); 212 } else 213 s->method->internal->ssl_clear(s); 214 215 return (1); 216 } 217 218 /* Used to change an SSL_CTXs default SSL method type */ 219 int 220 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 221 { 222 STACK_OF(SSL_CIPHER) *sk; 223 224 ctx->method = meth; 225 226 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 227 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 228 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 229 SSLerror(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 230 return (0); 231 } 232 return (1); 233 } 234 235 SSL * 236 SSL_new(SSL_CTX *ctx) 237 { 238 SSL *s; 239 240 if (ctx == NULL) { 241 SSLerror(SSL_R_NULL_SSL_CTX); 242 return (NULL); 243 } 244 if (ctx->method == NULL) { 245 SSLerror(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 246 return (NULL); 247 } 248 249 if ((s = calloc(1, sizeof(*s))) == NULL) { 250 SSLerror(ERR_R_MALLOC_FAILURE); 251 return (NULL); 252 } 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 254 free(s); 255 SSLerror(ERR_R_MALLOC_FAILURE); 256 return (NULL); 257 } 258 259 s->internal->min_version = ctx->internal->min_version; 260 s->internal->max_version = ctx->internal->max_version; 261 262 s->internal->options = ctx->internal->options; 263 s->internal->mode = ctx->internal->mode; 264 s->internal->max_cert_list = ctx->internal->max_cert_list; 265 266 if (ctx->internal->cert != NULL) { 267 /* 268 * Earlier library versions used to copy the pointer to 269 * the CERT, not its contents; only when setting new 270 * parameters for the per-SSL copy, ssl_cert_new would be 271 * called (and the direct reference to the per-SSL_CTX 272 * settings would be lost, but those still were indirectly 273 * accessed for various purposes, and for that reason they 274 * used to be known as s->ctx->default_cert). 275 * Now we don't look at the SSL_CTX's CERT after having 276 * duplicated it once. 277 */ 278 s->cert = ssl_cert_dup(ctx->internal->cert); 279 if (s->cert == NULL) 280 goto err; 281 } else 282 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 283 284 s->internal->read_ahead = ctx->internal->read_ahead; 285 s->internal->msg_callback = ctx->internal->msg_callback; 286 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 287 s->verify_mode = ctx->verify_mode; 288 s->sid_ctx_length = ctx->sid_ctx_length; 289 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 290 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 291 s->internal->verify_callback = ctx->internal->default_verify_callback; 292 s->internal->generate_session_id = ctx->internal->generate_session_id; 293 294 s->param = X509_VERIFY_PARAM_new(); 295 if (!s->param) 296 goto err; 297 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 298 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 299 s->max_send_fragment = ctx->internal->max_send_fragment; 300 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->ctx = ctx; 303 s->internal->tlsext_debug_cb = 0; 304 s->internal->tlsext_debug_arg = NULL; 305 s->internal->tlsext_ticket_expected = 0; 306 s->tlsext_status_type = -1; 307 s->internal->tlsext_status_expected = 0; 308 s->internal->tlsext_ocsp_ids = NULL; 309 s->internal->tlsext_ocsp_exts = NULL; 310 s->internal->tlsext_ocsp_resp = NULL; 311 s->internal->tlsext_ocsp_resplen = -1; 312 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 313 s->initial_ctx = ctx; 314 315 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 316 s->internal->tlsext_ecpointformatlist = 317 calloc(ctx->internal->tlsext_ecpointformatlist_length, 318 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 319 if (s->internal->tlsext_ecpointformatlist == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_ecpointformatlist, 322 ctx->internal->tlsext_ecpointformatlist, 323 ctx->internal->tlsext_ecpointformatlist_length * 324 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 325 s->internal->tlsext_ecpointformatlist_length = 326 ctx->internal->tlsext_ecpointformatlist_length; 327 } 328 if (ctx->internal->tlsext_supportedgroups != NULL) { 329 s->internal->tlsext_supportedgroups = 330 calloc(ctx->internal->tlsext_supportedgroups_length, 331 sizeof(ctx->internal->tlsext_supportedgroups)); 332 if (s->internal->tlsext_supportedgroups == NULL) 333 goto err; 334 memcpy(s->internal->tlsext_supportedgroups, 335 ctx->internal->tlsext_supportedgroups, 336 ctx->internal->tlsext_supportedgroups_length * 337 sizeof(ctx->internal->tlsext_supportedgroups[0])); 338 s->internal->tlsext_supportedgroups_length = 339 ctx->internal->tlsext_supportedgroups_length; 340 } 341 342 s->internal->next_proto_negotiated = NULL; 343 344 if (s->ctx->internal->alpn_client_proto_list != NULL) { 345 s->internal->alpn_client_proto_list = 346 malloc(s->ctx->internal->alpn_client_proto_list_len); 347 if (s->internal->alpn_client_proto_list == NULL) 348 goto err; 349 memcpy(s->internal->alpn_client_proto_list, 350 s->ctx->internal->alpn_client_proto_list, 351 s->ctx->internal->alpn_client_proto_list_len); 352 s->internal->alpn_client_proto_list_len = 353 s->ctx->internal->alpn_client_proto_list_len; 354 } 355 356 s->verify_result = X509_V_OK; 357 358 s->method = ctx->method; 359 360 if (!s->method->internal->ssl_new(s)) 361 goto err; 362 363 s->references = 1; 364 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 365 366 SSL_clear(s); 367 368 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 369 370 return (s); 371 372 err: 373 SSL_free(s); 374 SSLerror(ERR_R_MALLOC_FAILURE); 375 return (NULL); 376 } 377 378 int 379 SSL_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 SSLerror(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ctx->sid_ctx_length = sid_ctx_len; 387 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390 } 391 392 int 393 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 394 unsigned int sid_ctx_len) 395 { 396 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 397 SSLerror(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 398 return (0); 399 } 400 ssl->sid_ctx_length = sid_ctx_len; 401 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 402 403 return (1); 404 } 405 406 int 407 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 408 { 409 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 410 ctx->internal->generate_session_id = cb; 411 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 412 return (1); 413 } 414 415 int 416 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 417 { 418 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 419 ssl->internal->generate_session_id = cb; 420 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 421 return (1); 422 } 423 424 int 425 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 426 unsigned int id_len) 427 { 428 /* 429 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 430 * shows how we can "construct" a session to give us the desired 431 * check - ie. to find if there's a session in the hash table 432 * that would conflict with any new session built out of this 433 * id/id_len and the ssl_version in use by this SSL. 434 */ 435 SSL_SESSION r, *p; 436 437 if (id_len > sizeof r.session_id) 438 return (0); 439 440 r.ssl_version = ssl->version; 441 r.session_id_length = id_len; 442 memcpy(r.session_id, id, id_len); 443 444 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 445 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 446 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 447 return (p != NULL); 448 } 449 450 int 451 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 452 { 453 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 454 } 455 456 int 457 SSL_set_purpose(SSL *s, int purpose) 458 { 459 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 460 } 461 462 int 463 SSL_CTX_set_trust(SSL_CTX *s, int trust) 464 { 465 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 466 } 467 468 int 469 SSL_set_trust(SSL *s, int trust) 470 { 471 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 472 } 473 474 int 475 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 476 { 477 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 478 } 479 480 int 481 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482 { 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484 } 485 486 void 487 SSL_free(SSL *s) 488 { 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 BUF_MEM_free(s->internal->init_buf); 516 517 /* add extra stuff */ 518 sk_SSL_CIPHER_free(s->cipher_list); 519 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 520 521 /* Make the next call work :-) */ 522 if (s->session != NULL) { 523 ssl_clear_bad_session(s); 524 SSL_SESSION_free(s->session); 525 } 526 527 ssl_clear_cipher_ctx(s); 528 ssl_clear_hash_ctx(&s->read_hash); 529 ssl_clear_hash_ctx(&s->internal->write_hash); 530 531 ssl_cert_free(s->cert); 532 533 free(s->tlsext_hostname); 534 SSL_CTX_free(s->initial_ctx); 535 536 free(s->internal->tlsext_ecpointformatlist); 537 free(s->internal->tlsext_supportedgroups); 538 539 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 540 X509_EXTENSION_free); 541 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 542 free(s->internal->tlsext_ocsp_resp); 543 544 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 545 546 if (s->method != NULL) 547 s->method->internal->ssl_free(s); 548 549 SSL_CTX_free(s->ctx); 550 551 free(s->internal->next_proto_negotiated); 552 free(s->internal->alpn_client_proto_list); 553 554 #ifndef OPENSSL_NO_SRTP 555 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 556 #endif 557 558 free(s->internal); 559 free(s); 560 } 561 562 void 563 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 564 { 565 /* If the output buffering BIO is still in place, remove it */ 566 if (s->bbio != NULL) { 567 if (s->wbio == s->bbio) { 568 s->wbio = s->wbio->next_bio; 569 s->bbio->next_bio = NULL; 570 } 571 } 572 573 if (s->rbio != rbio && s->rbio != s->wbio) 574 BIO_free_all(s->rbio); 575 if (s->wbio != wbio) 576 BIO_free_all(s->wbio); 577 s->rbio = rbio; 578 s->wbio = wbio; 579 } 580 581 BIO * 582 SSL_get_rbio(const SSL *s) 583 { 584 return (s->rbio); 585 } 586 587 BIO * 588 SSL_get_wbio(const SSL *s) 589 { 590 return (s->wbio); 591 } 592 593 int 594 SSL_get_fd(const SSL *s) 595 { 596 return (SSL_get_rfd(s)); 597 } 598 599 int 600 SSL_get_rfd(const SSL *s) 601 { 602 int ret = -1; 603 BIO *b, *r; 604 605 b = SSL_get_rbio(s); 606 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 607 if (r != NULL) 608 BIO_get_fd(r, &ret); 609 return (ret); 610 } 611 612 int 613 SSL_get_wfd(const SSL *s) 614 { 615 int ret = -1; 616 BIO *b, *r; 617 618 b = SSL_get_wbio(s); 619 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 620 if (r != NULL) 621 BIO_get_fd(r, &ret); 622 return (ret); 623 } 624 625 int 626 SSL_set_fd(SSL *s, int fd) 627 { 628 int ret = 0; 629 BIO *bio = NULL; 630 631 bio = BIO_new(BIO_s_socket()); 632 633 if (bio == NULL) { 634 SSLerror(ERR_R_BUF_LIB); 635 goto err; 636 } 637 BIO_set_fd(bio, fd, BIO_NOCLOSE); 638 SSL_set_bio(s, bio, bio); 639 ret = 1; 640 err: 641 return (ret); 642 } 643 644 int 645 SSL_set_wfd(SSL *s, int fd) 646 { 647 int ret = 0; 648 BIO *bio = NULL; 649 650 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 651 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 652 bio = BIO_new(BIO_s_socket()); 653 654 if (bio == NULL) { 655 SSLerror(ERR_R_BUF_LIB); 656 goto err; 657 } 658 BIO_set_fd(bio, fd, BIO_NOCLOSE); 659 SSL_set_bio(s, SSL_get_rbio(s), bio); 660 } else 661 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 662 ret = 1; 663 err: 664 return (ret); 665 } 666 667 int 668 SSL_set_rfd(SSL *s, int fd) 669 { 670 int ret = 0; 671 BIO *bio = NULL; 672 673 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 674 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 675 bio = BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) { 678 SSLerror(ERR_R_BUF_LIB); 679 goto err; 680 } 681 BIO_set_fd(bio, fd, BIO_NOCLOSE); 682 SSL_set_bio(s, bio, SSL_get_wbio(s)); 683 } else 684 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 685 ret = 1; 686 err: 687 return (ret); 688 } 689 690 691 /* return length of latest Finished message we sent, copy to 'buf' */ 692 size_t 693 SSL_get_finished(const SSL *s, void *buf, size_t count) 694 { 695 size_t ret = 0; 696 697 if (s->s3 != NULL) { 698 ret = S3I(s)->tmp.finish_md_len; 699 if (count > ret) 700 count = ret; 701 memcpy(buf, S3I(s)->tmp.finish_md, count); 702 } 703 return (ret); 704 } 705 706 /* return length of latest Finished message we expected, copy to 'buf' */ 707 size_t 708 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 709 { 710 size_t ret = 0; 711 712 if (s->s3 != NULL) { 713 ret = S3I(s)->tmp.peer_finish_md_len; 714 if (count > ret) 715 count = ret; 716 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 717 } 718 return (ret); 719 } 720 721 722 int 723 SSL_get_verify_mode(const SSL *s) 724 { 725 return (s->verify_mode); 726 } 727 728 int 729 SSL_get_verify_depth(const SSL *s) 730 { 731 return (X509_VERIFY_PARAM_get_depth(s->param)); 732 } 733 734 int 735 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 736 { 737 return (s->internal->verify_callback); 738 } 739 740 int 741 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 742 { 743 return (ctx->verify_mode); 744 } 745 746 int 747 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 748 { 749 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 750 } 751 752 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 753 { 754 return (ctx->internal->default_verify_callback); 755 } 756 757 void 758 SSL_set_verify(SSL *s, int mode, 759 int (*callback)(int ok, X509_STORE_CTX *ctx)) 760 { 761 s->verify_mode = mode; 762 if (callback != NULL) 763 s->internal->verify_callback = callback; 764 } 765 766 void 767 SSL_set_verify_depth(SSL *s, int depth) 768 { 769 X509_VERIFY_PARAM_set_depth(s->param, depth); 770 } 771 772 void 773 SSL_set_read_ahead(SSL *s, int yes) 774 { 775 s->internal->read_ahead = yes; 776 } 777 778 int 779 SSL_get_read_ahead(const SSL *s) 780 { 781 return (s->internal->read_ahead); 782 } 783 784 int 785 SSL_pending(const SSL *s) 786 { 787 /* 788 * SSL_pending cannot work properly if read-ahead is enabled 789 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 790 * and it is impossible to fix since SSL_pending cannot report 791 * errors that may be observed while scanning the new data. 792 * (Note that SSL_pending() is often used as a boolean value, 793 * so we'd better not return -1.) 794 */ 795 return (s->method->internal->ssl_pending(s)); 796 } 797 798 X509 * 799 SSL_get_peer_certificate(const SSL *s) 800 { 801 X509 *r; 802 803 if ((s == NULL) || (s->session == NULL)) 804 r = NULL; 805 else 806 r = s->session->peer; 807 808 if (r == NULL) 809 return (r); 810 811 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 812 813 return (r); 814 } 815 816 STACK_OF(X509) * 817 SSL_get_peer_cert_chain(const SSL *s) 818 { 819 STACK_OF(X509) *r; 820 821 if ((s == NULL) || (s->session == NULL) || 822 (SSI(s)->sess_cert == NULL)) 823 r = NULL; 824 else 825 r = SSI(s)->sess_cert->cert_chain; 826 827 /* 828 * If we are a client, cert_chain includes the peer's own 829 * certificate; 830 * if we are a server, it does not. 831 */ 832 return (r); 833 } 834 835 /* 836 * Now in theory, since the calling process own 't' it should be safe to 837 * modify. We need to be able to read f without being hassled 838 */ 839 void 840 SSL_copy_session_id(SSL *t, const SSL *f) 841 { 842 CERT *tmp; 843 844 /* Do we need to to SSL locking? */ 845 SSL_set_session(t, SSL_get_session(f)); 846 847 /* 848 * What if we are setup as SSLv2 but want to talk SSLv3 or 849 * vice-versa. 850 */ 851 if (t->method != f->method) { 852 t->method->internal->ssl_free(t); /* cleanup current */ 853 t->method = f->method; /* change method */ 854 t->method->internal->ssl_new(t); /* setup new */ 855 } 856 857 tmp = t->cert; 858 if (f->cert != NULL) { 859 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 860 t->cert = f->cert; 861 } else 862 t->cert = NULL; 863 ssl_cert_free(tmp); 864 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 865 } 866 867 /* Fix this so it checks all the valid key/cert options */ 868 int 869 SSL_CTX_check_private_key(const SSL_CTX *ctx) 870 { 871 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 872 (ctx->internal->cert->key->x509 == NULL)) { 873 SSLerror(SSL_R_NO_CERTIFICATE_ASSIGNED); 874 return (0); 875 } 876 if (ctx->internal->cert->key->privatekey == NULL) { 877 SSLerror(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 878 return (0); 879 } 880 return (X509_check_private_key(ctx->internal->cert->key->x509, 881 ctx->internal->cert->key->privatekey)); 882 } 883 884 /* Fix this function so that it takes an optional type parameter */ 885 int 886 SSL_check_private_key(const SSL *ssl) 887 { 888 if (ssl == NULL) { 889 SSLerror(ERR_R_PASSED_NULL_PARAMETER); 890 return (0); 891 } 892 if (ssl->cert == NULL) { 893 SSLerror(SSL_R_NO_CERTIFICATE_ASSIGNED); 894 return (0); 895 } 896 if (ssl->cert->key->x509 == NULL) { 897 SSLerror(SSL_R_NO_CERTIFICATE_ASSIGNED); 898 return (0); 899 } 900 if (ssl->cert->key->privatekey == NULL) { 901 SSLerror(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 902 return (0); 903 } 904 return (X509_check_private_key(ssl->cert->key->x509, 905 ssl->cert->key->privatekey)); 906 } 907 908 int 909 SSL_accept(SSL *s) 910 { 911 if (s->internal->handshake_func == NULL) 912 SSL_set_accept_state(s); /* Not properly initialized yet */ 913 914 return (s->method->internal->ssl_accept(s)); 915 } 916 917 int 918 SSL_connect(SSL *s) 919 { 920 if (s->internal->handshake_func == NULL) 921 SSL_set_connect_state(s); /* Not properly initialized yet */ 922 923 return (s->method->internal->ssl_connect(s)); 924 } 925 926 long 927 SSL_get_default_timeout(const SSL *s) 928 { 929 return (s->method->internal->get_timeout()); 930 } 931 932 int 933 SSL_read(SSL *s, void *buf, int num) 934 { 935 if (s->internal->handshake_func == NULL) { 936 SSLerror(SSL_R_UNINITIALIZED); 937 return (-1); 938 } 939 940 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 941 s->internal->rwstate = SSL_NOTHING; 942 return (0); 943 } 944 return (s->method->internal->ssl_read(s, buf, num)); 945 } 946 947 int 948 SSL_peek(SSL *s, void *buf, int num) 949 { 950 if (s->internal->handshake_func == NULL) { 951 SSLerror(SSL_R_UNINITIALIZED); 952 return (-1); 953 } 954 955 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 956 return (0); 957 } 958 return (s->method->internal->ssl_peek(s, buf, num)); 959 } 960 961 int 962 SSL_write(SSL *s, const void *buf, int num) 963 { 964 if (s->internal->handshake_func == NULL) { 965 SSLerror(SSL_R_UNINITIALIZED); 966 return (-1); 967 } 968 969 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 970 s->internal->rwstate = SSL_NOTHING; 971 SSLerror(SSL_R_PROTOCOL_IS_SHUTDOWN); 972 return (-1); 973 } 974 return (s->method->internal->ssl_write(s, buf, num)); 975 } 976 977 int 978 SSL_shutdown(SSL *s) 979 { 980 /* 981 * Note that this function behaves differently from what one might 982 * expect. Return values are 0 for no success (yet), 983 * 1 for success; but calling it once is usually not enough, 984 * even if blocking I/O is used (see ssl3_shutdown). 985 */ 986 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if ((s != NULL) && !SSL_in_init(s)) 993 return (s->method->internal->ssl_shutdown(s)); 994 else 995 return (1); 996 } 997 998 int 999 SSL_renegotiate(SSL *s) 1000 { 1001 if (s->internal->renegotiate == 0) 1002 s->internal->renegotiate = 1; 1003 1004 s->internal->new_session = 1; 1005 1006 return (s->method->internal->ssl_renegotiate(s)); 1007 } 1008 1009 int 1010 SSL_renegotiate_abbreviated(SSL *s) 1011 { 1012 if (s->internal->renegotiate == 0) 1013 s->internal->renegotiate = 1; 1014 1015 s->internal->new_session = 0; 1016 1017 return (s->method->internal->ssl_renegotiate(s)); 1018 } 1019 1020 int 1021 SSL_renegotiate_pending(SSL *s) 1022 { 1023 /* 1024 * Becomes true when negotiation is requested; 1025 * false again once a handshake has finished. 1026 */ 1027 return (s->internal->renegotiate != 0); 1028 } 1029 1030 long 1031 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1032 { 1033 long l; 1034 1035 switch (cmd) { 1036 case SSL_CTRL_GET_READ_AHEAD: 1037 return (s->internal->read_ahead); 1038 case SSL_CTRL_SET_READ_AHEAD: 1039 l = s->internal->read_ahead; 1040 s->internal->read_ahead = larg; 1041 return (l); 1042 1043 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1044 s->internal->msg_callback_arg = parg; 1045 return (1); 1046 1047 case SSL_CTRL_OPTIONS: 1048 return (s->internal->options|=larg); 1049 case SSL_CTRL_CLEAR_OPTIONS: 1050 return (s->internal->options&=~larg); 1051 case SSL_CTRL_MODE: 1052 return (s->internal->mode|=larg); 1053 case SSL_CTRL_CLEAR_MODE: 1054 return (s->internal->mode &=~larg); 1055 case SSL_CTRL_GET_MAX_CERT_LIST: 1056 return (s->internal->max_cert_list); 1057 case SSL_CTRL_SET_MAX_CERT_LIST: 1058 l = s->internal->max_cert_list; 1059 s->internal->max_cert_list = larg; 1060 return (l); 1061 case SSL_CTRL_SET_MTU: 1062 #ifndef OPENSSL_NO_DTLS1 1063 if (larg < (long)dtls1_min_mtu()) 1064 return (0); 1065 #endif 1066 if (SSL_IS_DTLS(s)) { 1067 D1I(s)->mtu = larg; 1068 return (larg); 1069 } 1070 return (0); 1071 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1072 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1073 return (0); 1074 s->max_send_fragment = larg; 1075 return (1); 1076 case SSL_CTRL_GET_RI_SUPPORT: 1077 if (s->s3) 1078 return (S3I(s)->send_connection_binding); 1079 else return (0); 1080 default: 1081 if (SSL_IS_DTLS(s)) 1082 return dtls1_ctrl(s, cmd, larg, parg); 1083 return ssl3_ctrl(s, cmd, larg, parg); 1084 } 1085 } 1086 1087 long 1088 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1089 { 1090 switch (cmd) { 1091 case SSL_CTRL_SET_MSG_CALLBACK: 1092 s->internal->msg_callback = (void (*)(int write_p, int version, 1093 int content_type, const void *buf, size_t len, 1094 SSL *ssl, void *arg))(fp); 1095 return (1); 1096 1097 default: 1098 return (ssl3_callback_ctrl(s, cmd, fp)); 1099 } 1100 } 1101 1102 struct lhash_st_SSL_SESSION * 1103 SSL_CTX_sessions(SSL_CTX *ctx) 1104 { 1105 return (ctx->internal->sessions); 1106 } 1107 1108 long 1109 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1110 { 1111 long l; 1112 1113 switch (cmd) { 1114 case SSL_CTRL_GET_READ_AHEAD: 1115 return (ctx->internal->read_ahead); 1116 case SSL_CTRL_SET_READ_AHEAD: 1117 l = ctx->internal->read_ahead; 1118 ctx->internal->read_ahead = larg; 1119 return (l); 1120 1121 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1122 ctx->internal->msg_callback_arg = parg; 1123 return (1); 1124 1125 case SSL_CTRL_GET_MAX_CERT_LIST: 1126 return (ctx->internal->max_cert_list); 1127 case SSL_CTRL_SET_MAX_CERT_LIST: 1128 l = ctx->internal->max_cert_list; 1129 ctx->internal->max_cert_list = larg; 1130 return (l); 1131 1132 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1133 l = ctx->internal->session_cache_size; 1134 ctx->internal->session_cache_size = larg; 1135 return (l); 1136 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1137 return (ctx->internal->session_cache_size); 1138 case SSL_CTRL_SET_SESS_CACHE_MODE: 1139 l = ctx->internal->session_cache_mode; 1140 ctx->internal->session_cache_mode = larg; 1141 return (l); 1142 case SSL_CTRL_GET_SESS_CACHE_MODE: 1143 return (ctx->internal->session_cache_mode); 1144 1145 case SSL_CTRL_SESS_NUMBER: 1146 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1147 case SSL_CTRL_SESS_CONNECT: 1148 return (ctx->internal->stats.sess_connect); 1149 case SSL_CTRL_SESS_CONNECT_GOOD: 1150 return (ctx->internal->stats.sess_connect_good); 1151 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1152 return (ctx->internal->stats.sess_connect_renegotiate); 1153 case SSL_CTRL_SESS_ACCEPT: 1154 return (ctx->internal->stats.sess_accept); 1155 case SSL_CTRL_SESS_ACCEPT_GOOD: 1156 return (ctx->internal->stats.sess_accept_good); 1157 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1158 return (ctx->internal->stats.sess_accept_renegotiate); 1159 case SSL_CTRL_SESS_HIT: 1160 return (ctx->internal->stats.sess_hit); 1161 case SSL_CTRL_SESS_CB_HIT: 1162 return (ctx->internal->stats.sess_cb_hit); 1163 case SSL_CTRL_SESS_MISSES: 1164 return (ctx->internal->stats.sess_miss); 1165 case SSL_CTRL_SESS_TIMEOUTS: 1166 return (ctx->internal->stats.sess_timeout); 1167 case SSL_CTRL_SESS_CACHE_FULL: 1168 return (ctx->internal->stats.sess_cache_full); 1169 case SSL_CTRL_OPTIONS: 1170 return (ctx->internal->options|=larg); 1171 case SSL_CTRL_CLEAR_OPTIONS: 1172 return (ctx->internal->options&=~larg); 1173 case SSL_CTRL_MODE: 1174 return (ctx->internal->mode|=larg); 1175 case SSL_CTRL_CLEAR_MODE: 1176 return (ctx->internal->mode&=~larg); 1177 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1178 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1179 return (0); 1180 ctx->internal->max_send_fragment = larg; 1181 return (1); 1182 default: 1183 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1184 } 1185 } 1186 1187 long 1188 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1189 { 1190 switch (cmd) { 1191 case SSL_CTRL_SET_MSG_CALLBACK: 1192 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1193 int content_type, const void *buf, size_t len, SSL *ssl, 1194 void *arg))(fp); 1195 return (1); 1196 1197 default: 1198 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1199 } 1200 } 1201 1202 int 1203 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1204 { 1205 long l; 1206 1207 l = a->id - b->id; 1208 if (l == 0L) 1209 return (0); 1210 else 1211 return ((l > 0) ? 1:-1); 1212 } 1213 1214 int 1215 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1216 const SSL_CIPHER * const *bp) 1217 { 1218 long l; 1219 1220 l = (*ap)->id - (*bp)->id; 1221 if (l == 0L) 1222 return (0); 1223 else 1224 return ((l > 0) ? 1:-1); 1225 } 1226 1227 /* 1228 * Return a STACK of the ciphers available for the SSL and in order of 1229 * preference. 1230 */ 1231 STACK_OF(SSL_CIPHER) * 1232 SSL_get_ciphers(const SSL *s) 1233 { 1234 if (s != NULL) { 1235 if (s->cipher_list != NULL) { 1236 return (s->cipher_list); 1237 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1238 return (s->ctx->cipher_list); 1239 } 1240 } 1241 return (NULL); 1242 } 1243 1244 /* 1245 * Return a STACK of the ciphers available for the SSL and in order of 1246 * algorithm id. 1247 */ 1248 STACK_OF(SSL_CIPHER) * 1249 ssl_get_ciphers_by_id(SSL *s) 1250 { 1251 if (s != NULL) { 1252 if (s->internal->cipher_list_by_id != NULL) { 1253 return (s->internal->cipher_list_by_id); 1254 } else if ((s->ctx != NULL) && 1255 (s->ctx->internal->cipher_list_by_id != NULL)) { 1256 return (s->ctx->internal->cipher_list_by_id); 1257 } 1258 } 1259 return (NULL); 1260 } 1261 1262 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1263 const char * 1264 SSL_get_cipher_list(const SSL *s, int n) 1265 { 1266 SSL_CIPHER *c; 1267 STACK_OF(SSL_CIPHER) *sk; 1268 1269 if (s == NULL) 1270 return (NULL); 1271 sk = SSL_get_ciphers(s); 1272 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1273 return (NULL); 1274 c = sk_SSL_CIPHER_value(sk, n); 1275 if (c == NULL) 1276 return (NULL); 1277 return (c->name); 1278 } 1279 1280 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1281 int 1282 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1283 { 1284 STACK_OF(SSL_CIPHER) *sk; 1285 1286 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1287 &ctx->internal->cipher_list_by_id, str); 1288 /* 1289 * ssl_create_cipher_list may return an empty stack if it 1290 * was unable to find a cipher matching the given rule string 1291 * (for example if the rule string specifies a cipher which 1292 * has been disabled). This is not an error as far as 1293 * ssl_create_cipher_list is concerned, and hence 1294 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1295 * updated. 1296 */ 1297 if (sk == NULL) 1298 return (0); 1299 else if (sk_SSL_CIPHER_num(sk) == 0) { 1300 SSLerror(SSL_R_NO_CIPHER_MATCH); 1301 return (0); 1302 } 1303 return (1); 1304 } 1305 1306 /* Specify the ciphers to be used by the SSL. */ 1307 int 1308 SSL_set_cipher_list(SSL *s, const char *str) 1309 { 1310 STACK_OF(SSL_CIPHER) *sk; 1311 1312 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1313 &s->internal->cipher_list_by_id, str); 1314 /* see comment in SSL_CTX_set_cipher_list */ 1315 if (sk == NULL) 1316 return (0); 1317 else if (sk_SSL_CIPHER_num(sk) == 0) { 1318 SSLerror(SSL_R_NO_CIPHER_MATCH); 1319 return (0); 1320 } 1321 return (1); 1322 } 1323 1324 /* works well for SSLv2, not so good for SSLv3 */ 1325 char * 1326 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1327 { 1328 char *end; 1329 STACK_OF(SSL_CIPHER) *sk; 1330 SSL_CIPHER *c; 1331 size_t curlen = 0; 1332 int i; 1333 1334 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1335 return (NULL); 1336 1337 sk = s->session->ciphers; 1338 if (sk_SSL_CIPHER_num(sk) == 0) 1339 return (NULL); 1340 1341 buf[0] = '\0'; 1342 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1343 c = sk_SSL_CIPHER_value(sk, i); 1344 end = buf + curlen; 1345 if (strlcat(buf, c->name, len) >= len || 1346 (curlen = strlcat(buf, ":", len)) >= len) { 1347 /* remove truncated cipher from list */ 1348 *end = '\0'; 1349 break; 1350 } 1351 } 1352 /* remove trailing colon */ 1353 if ((end = strrchr(buf, ':')) != NULL) 1354 *end = '\0'; 1355 return (buf); 1356 } 1357 1358 int 1359 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1360 size_t maxlen, size_t *outlen) 1361 { 1362 SSL_CIPHER *cipher; 1363 int ciphers = 0; 1364 CBB cbb; 1365 int i; 1366 1367 *outlen = 0; 1368 1369 if (sk == NULL) 1370 return (0); 1371 1372 if (!CBB_init_fixed(&cbb, p, maxlen)) 1373 goto err; 1374 1375 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1376 cipher = sk_SSL_CIPHER_value(sk, i); 1377 1378 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1379 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1380 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1381 continue; 1382 1383 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher))) 1384 goto err; 1385 1386 ciphers++; 1387 } 1388 1389 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1390 if (ciphers > 0 && !s->internal->renegotiate) { 1391 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1392 goto err; 1393 } 1394 1395 if (!CBB_finish(&cbb, NULL, outlen)) 1396 goto err; 1397 1398 return 1; 1399 1400 err: 1401 CBB_cleanup(&cbb); 1402 1403 return 0; 1404 } 1405 1406 STACK_OF(SSL_CIPHER) * 1407 ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1408 { 1409 CBS cbs; 1410 const SSL_CIPHER *c; 1411 STACK_OF(SSL_CIPHER) *sk = NULL; 1412 unsigned long cipher_id; 1413 uint16_t cipher_value, max_version; 1414 1415 if (s->s3) 1416 S3I(s)->send_connection_binding = 0; 1417 1418 /* 1419 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1420 */ 1421 if (num < 2 || num > 0x10000 - 2) { 1422 SSLerror(SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1423 return (NULL); 1424 } 1425 1426 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1427 SSLerror(ERR_R_MALLOC_FAILURE); 1428 goto err; 1429 } 1430 1431 CBS_init(&cbs, p, num); 1432 while (CBS_len(&cbs) > 0) { 1433 if (!CBS_get_u16(&cbs, &cipher_value)) { 1434 SSLerror(SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1435 goto err; 1436 } 1437 1438 cipher_id = SSL3_CK_ID | cipher_value; 1439 1440 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1441 /* 1442 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1443 * renegotiating. 1444 */ 1445 if (s->internal->renegotiate) { 1446 SSLerror(SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1447 ssl3_send_alert(s, SSL3_AL_FATAL, 1448 SSL_AD_HANDSHAKE_FAILURE); 1449 1450 goto err; 1451 } 1452 S3I(s)->send_connection_binding = 1; 1453 continue; 1454 } 1455 1456 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1457 /* 1458 * TLS_FALLBACK_SCSV indicates that the client 1459 * previously tried a higher protocol version. 1460 * Fail if the current version is an unexpected 1461 * downgrade. 1462 */ 1463 max_version = ssl_max_server_version(s); 1464 if (max_version == 0 || s->version < max_version) { 1465 SSLerror(SSL_R_INAPPROPRIATE_FALLBACK); 1466 if (s->s3 != NULL) 1467 ssl3_send_alert(s, SSL3_AL_FATAL, 1468 SSL_AD_INAPPROPRIATE_FALLBACK); 1469 goto err; 1470 } 1471 continue; 1472 } 1473 1474 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1475 if (!sk_SSL_CIPHER_push(sk, c)) { 1476 SSLerror(ERR_R_MALLOC_FAILURE); 1477 goto err; 1478 } 1479 } 1480 } 1481 1482 return (sk); 1483 1484 err: 1485 sk_SSL_CIPHER_free(sk); 1486 1487 return (NULL); 1488 } 1489 1490 1491 /* 1492 * Return a servername extension value if provided in Client Hello, or NULL. 1493 * So far, only host_name types are defined (RFC 3546). 1494 */ 1495 const char * 1496 SSL_get_servername(const SSL *s, const int type) 1497 { 1498 if (type != TLSEXT_NAMETYPE_host_name) 1499 return (NULL); 1500 1501 return (s->session && !s->tlsext_hostname ? 1502 s->session->tlsext_hostname : 1503 s->tlsext_hostname); 1504 } 1505 1506 int 1507 SSL_get_servername_type(const SSL *s) 1508 { 1509 if (s->session && 1510 (!s->tlsext_hostname ? 1511 s->session->tlsext_hostname : s->tlsext_hostname)) 1512 return (TLSEXT_NAMETYPE_host_name); 1513 return (-1); 1514 } 1515 1516 /* 1517 * SSL_select_next_proto implements the standard protocol selection. It is 1518 * expected that this function is called from the callback set by 1519 * SSL_CTX_set_next_proto_select_cb. 1520 * 1521 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1522 * strings. The length byte itself is not included in the length. A byte 1523 * string of length 0 is invalid. No byte string may be truncated. 1524 * 1525 * The current, but experimental algorithm for selecting the protocol is: 1526 * 1527 * 1) If the server doesn't support NPN then this is indicated to the 1528 * callback. In this case, the client application has to abort the connection 1529 * or have a default application level protocol. 1530 * 1531 * 2) If the server supports NPN, but advertises an empty list then the 1532 * client selects the first protcol in its list, but indicates via the 1533 * API that this fallback case was enacted. 1534 * 1535 * 3) Otherwise, the client finds the first protocol in the server's list 1536 * that it supports and selects this protocol. This is because it's 1537 * assumed that the server has better information about which protocol 1538 * a client should use. 1539 * 1540 * 4) If the client doesn't support any of the server's advertised 1541 * protocols, then this is treated the same as case 2. 1542 * 1543 * It returns either 1544 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1545 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1546 */ 1547 int 1548 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1549 const unsigned char *server, unsigned int server_len, 1550 const unsigned char *client, unsigned int client_len) 1551 { 1552 unsigned int i, j; 1553 const unsigned char *result; 1554 int status = OPENSSL_NPN_UNSUPPORTED; 1555 1556 /* 1557 * For each protocol in server preference order, 1558 * see if we support it. 1559 */ 1560 for (i = 0; i < server_len; ) { 1561 for (j = 0; j < client_len; ) { 1562 if (server[i] == client[j] && 1563 memcmp(&server[i + 1], 1564 &client[j + 1], server[i]) == 0) { 1565 /* We found a match */ 1566 result = &server[i]; 1567 status = OPENSSL_NPN_NEGOTIATED; 1568 goto found; 1569 } 1570 j += client[j]; 1571 j++; 1572 } 1573 i += server[i]; 1574 i++; 1575 } 1576 1577 /* There's no overlap between our protocols and the server's list. */ 1578 result = client; 1579 status = OPENSSL_NPN_NO_OVERLAP; 1580 1581 found: 1582 *out = (unsigned char *) result + 1; 1583 *outlen = result[0]; 1584 return (status); 1585 } 1586 1587 /* 1588 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1589 * requested protocol for this connection and returns 0. If the client didn't 1590 * request any protocol, then *data is set to NULL. 1591 * 1592 * Note that the client can request any protocol it chooses. The value returned 1593 * from this function need not be a member of the list of supported protocols 1594 * provided by the callback. 1595 */ 1596 void 1597 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1598 unsigned *len) 1599 { 1600 *data = s->internal->next_proto_negotiated; 1601 if (!*data) { 1602 *len = 0; 1603 } else { 1604 *len = s->internal->next_proto_negotiated_len; 1605 } 1606 } 1607 1608 /* 1609 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1610 * TLS server needs a list of supported protocols for Next Protocol 1611 * Negotiation. The returned list must be in wire format. The list is returned 1612 * by setting |out| to point to it and |outlen| to its length. This memory will 1613 * not be modified, but one should assume that the SSL* keeps a reference to 1614 * it. 1615 * 1616 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1617 * Otherwise, no such extension will be included in the ServerHello. 1618 */ 1619 void 1620 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1621 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1622 { 1623 ctx->internal->next_protos_advertised_cb = cb; 1624 ctx->internal->next_protos_advertised_cb_arg = arg; 1625 } 1626 1627 /* 1628 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1629 * client needs to select a protocol from the server's provided list. |out| 1630 * must be set to point to the selected protocol (which may be within |in|). 1631 * The length of the protocol name must be written into |outlen|. The server's 1632 * advertised protocols are provided in |in| and |inlen|. The callback can 1633 * assume that |in| is syntactically valid. 1634 * 1635 * The client must select a protocol. It is fatal to the connection if this 1636 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1637 */ 1638 void 1639 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1640 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1641 unsigned int inlen, void *arg), void *arg) 1642 { 1643 ctx->internal->next_proto_select_cb = cb; 1644 ctx->internal->next_proto_select_cb_arg = arg; 1645 } 1646 1647 /* 1648 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1649 * protocols, which must be in wire-format (i.e. a series of non-empty, 1650 * 8-bit length-prefixed strings). Returns 0 on success. 1651 */ 1652 int 1653 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1654 unsigned int protos_len) 1655 { 1656 free(ctx->internal->alpn_client_proto_list); 1657 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1658 return (1); 1659 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1660 ctx->internal->alpn_client_proto_list_len = protos_len; 1661 1662 return (0); 1663 } 1664 1665 /* 1666 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1667 * protocols, which must be in wire-format (i.e. a series of non-empty, 1668 * 8-bit length-prefixed strings). Returns 0 on success. 1669 */ 1670 int 1671 SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1672 unsigned int protos_len) 1673 { 1674 free(ssl->internal->alpn_client_proto_list); 1675 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) == NULL) 1676 return (1); 1677 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1678 ssl->internal->alpn_client_proto_list_len = protos_len; 1679 1680 return (0); 1681 } 1682 1683 /* 1684 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1685 * ClientHello processing in order to select an ALPN protocol from the 1686 * client's list of offered protocols. 1687 */ 1688 void 1689 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1690 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1691 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1692 { 1693 ctx->internal->alpn_select_cb = cb; 1694 ctx->internal->alpn_select_cb_arg = arg; 1695 } 1696 1697 /* 1698 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1699 * it sets data to point to len bytes of protocol name (not including the 1700 * leading length-prefix byte). If the server didn't respond with* a negotiated 1701 * protocol then len will be zero. 1702 */ 1703 void 1704 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1705 unsigned *len) 1706 { 1707 *data = NULL; 1708 *len = 0; 1709 1710 if (ssl->s3 != NULL) { 1711 *data = ssl->s3->internal->alpn_selected; 1712 *len = ssl->s3->internal->alpn_selected_len; 1713 } 1714 } 1715 1716 int 1717 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1718 const char *label, size_t llen, const unsigned char *p, size_t plen, 1719 int use_context) 1720 { 1721 return (tls1_export_keying_material(s, out, olen, 1722 label, llen, p, plen, use_context)); 1723 } 1724 1725 static unsigned long 1726 ssl_session_hash(const SSL_SESSION *a) 1727 { 1728 unsigned long l; 1729 1730 l = (unsigned long) 1731 ((unsigned int) a->session_id[0] )| 1732 ((unsigned int) a->session_id[1]<< 8L)| 1733 ((unsigned long)a->session_id[2]<<16L)| 1734 ((unsigned long)a->session_id[3]<<24L); 1735 return (l); 1736 } 1737 1738 /* 1739 * NB: If this function (or indeed the hash function which uses a sort of 1740 * coarser function than this one) is changed, ensure 1741 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1742 * able to construct an SSL_SESSION that will collide with any existing session 1743 * with a matching session ID. 1744 */ 1745 static int 1746 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1747 { 1748 if (a->ssl_version != b->ssl_version) 1749 return (1); 1750 if (a->session_id_length != b->session_id_length) 1751 return (1); 1752 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1753 return (1); 1754 return (0); 1755 } 1756 1757 /* 1758 * These wrapper functions should remain rather than redeclaring 1759 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1760 * variable. The reason is that the functions aren't static, they're exposed via 1761 * ssl.h. 1762 */ 1763 static unsigned long 1764 ssl_session_LHASH_HASH(const void *arg) 1765 { 1766 const SSL_SESSION *a = arg; 1767 1768 return ssl_session_hash(a); 1769 } 1770 1771 static int 1772 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1773 { 1774 const SSL_SESSION *a = arg1; 1775 const SSL_SESSION *b = arg2; 1776 1777 return ssl_session_cmp(a, b); 1778 } 1779 1780 SSL_CTX * 1781 SSL_CTX_new(const SSL_METHOD *meth) 1782 { 1783 SSL_CTX *ret; 1784 1785 if (meth == NULL) { 1786 SSLerror(SSL_R_NULL_SSL_METHOD_PASSED); 1787 return (NULL); 1788 } 1789 1790 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1791 SSLerror(ERR_R_MALLOC_FAILURE); 1792 return (NULL); 1793 } 1794 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1795 free(ret); 1796 SSLerror(ERR_R_MALLOC_FAILURE); 1797 return (NULL); 1798 } 1799 1800 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1801 SSLerror(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1802 goto err; 1803 } 1804 1805 ret->method = meth; 1806 ret->internal->min_version = meth->internal->min_version; 1807 ret->internal->max_version = meth->internal->max_version; 1808 1809 ret->cert_store = NULL; 1810 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1811 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1812 ret->internal->session_cache_head = NULL; 1813 ret->internal->session_cache_tail = NULL; 1814 1815 /* We take the system default */ 1816 ret->session_timeout = meth->internal->get_timeout(); 1817 1818 ret->internal->new_session_cb = 0; 1819 ret->internal->remove_session_cb = 0; 1820 ret->internal->get_session_cb = 0; 1821 ret->internal->generate_session_id = 0; 1822 1823 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1824 1825 ret->references = 1; 1826 ret->internal->quiet_shutdown = 0; 1827 1828 ret->internal->info_callback = NULL; 1829 1830 ret->internal->app_verify_callback = 0; 1831 ret->internal->app_verify_arg = NULL; 1832 1833 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1834 ret->internal->read_ahead = 0; 1835 ret->internal->msg_callback = 0; 1836 ret->internal->msg_callback_arg = NULL; 1837 ret->verify_mode = SSL_VERIFY_NONE; 1838 ret->sid_ctx_length = 0; 1839 ret->internal->default_verify_callback = NULL; 1840 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1841 goto err; 1842 1843 ret->default_passwd_callback = 0; 1844 ret->default_passwd_callback_userdata = NULL; 1845 ret->internal->client_cert_cb = 0; 1846 ret->internal->app_gen_cookie_cb = 0; 1847 ret->internal->app_verify_cookie_cb = 0; 1848 1849 ret->internal->sessions = lh_SSL_SESSION_new(); 1850 if (ret->internal->sessions == NULL) 1851 goto err; 1852 ret->cert_store = X509_STORE_new(); 1853 if (ret->cert_store == NULL) 1854 goto err; 1855 1856 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1857 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1858 if (ret->cipher_list == NULL || 1859 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1860 SSLerror(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1861 goto err2; 1862 } 1863 1864 ret->param = X509_VERIFY_PARAM_new(); 1865 if (!ret->param) 1866 goto err; 1867 1868 if ((ret->internal->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1869 SSLerror(SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1870 goto err2; 1871 } 1872 if ((ret->internal->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1873 SSLerror(SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1874 goto err2; 1875 } 1876 1877 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1878 goto err; 1879 1880 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1881 1882 ret->extra_certs = NULL; 1883 1884 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1885 1886 ret->internal->tlsext_servername_callback = 0; 1887 ret->internal->tlsext_servername_arg = NULL; 1888 1889 /* Setup RFC4507 ticket keys */ 1890 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1891 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1892 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1893 1894 ret->internal->tlsext_status_cb = 0; 1895 ret->internal->tlsext_status_arg = NULL; 1896 1897 ret->internal->next_protos_advertised_cb = 0; 1898 ret->internal->next_proto_select_cb = 0; 1899 1900 #ifndef OPENSSL_NO_ENGINE 1901 ret->internal->client_cert_engine = NULL; 1902 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1903 #define eng_strx(x) #x 1904 #define eng_str(x) eng_strx(x) 1905 /* Use specific client engine automatically... ignore errors */ 1906 { 1907 ENGINE *eng; 1908 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1909 if (!eng) { 1910 ERR_clear_error(); 1911 ENGINE_load_builtin_engines(); 1912 eng = ENGINE_by_id(eng_str( 1913 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1914 } 1915 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1916 ERR_clear_error(); 1917 } 1918 #endif 1919 #endif 1920 /* 1921 * Default is to connect to non-RI servers. When RI is more widely 1922 * deployed might change this. 1923 */ 1924 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1925 1926 return (ret); 1927 err: 1928 SSLerror(ERR_R_MALLOC_FAILURE); 1929 err2: 1930 SSL_CTX_free(ret); 1931 return (NULL); 1932 } 1933 1934 void 1935 SSL_CTX_free(SSL_CTX *ctx) 1936 { 1937 int i; 1938 1939 if (ctx == NULL) 1940 return; 1941 1942 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1943 if (i > 0) 1944 return; 1945 1946 X509_VERIFY_PARAM_free(ctx->param); 1947 1948 /* 1949 * Free internal session cache. However: the remove_cb() may reference 1950 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1951 * after the sessions were flushed. 1952 * As the ex_data handling routines might also touch the session cache, 1953 * the most secure solution seems to be: empty (flush) the cache, then 1954 * free ex_data, then finally free the cache. 1955 * (See ticket [openssl.org #212].) 1956 */ 1957 if (ctx->internal->sessions != NULL) 1958 SSL_CTX_flush_sessions(ctx, 0); 1959 1960 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1961 1962 lh_SSL_SESSION_free(ctx->internal->sessions); 1963 1964 X509_STORE_free(ctx->cert_store); 1965 sk_SSL_CIPHER_free(ctx->cipher_list); 1966 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1967 ssl_cert_free(ctx->internal->cert); 1968 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1969 sk_X509_pop_free(ctx->extra_certs, X509_free); 1970 1971 #ifndef OPENSSL_NO_SRTP 1972 if (ctx->internal->srtp_profiles) 1973 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1974 #endif 1975 1976 #ifndef OPENSSL_NO_ENGINE 1977 if (ctx->internal->client_cert_engine) 1978 ENGINE_finish(ctx->internal->client_cert_engine); 1979 #endif 1980 1981 free(ctx->internal->tlsext_ecpointformatlist); 1982 free(ctx->internal->tlsext_supportedgroups); 1983 1984 free(ctx->internal->alpn_client_proto_list); 1985 1986 free(ctx->internal); 1987 free(ctx); 1988 } 1989 1990 void 1991 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1992 { 1993 ctx->default_passwd_callback = cb; 1994 } 1995 1996 void 1997 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1998 { 1999 ctx->default_passwd_callback_userdata = u; 2000 } 2001 2002 void 2003 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2004 void *), void *arg) 2005 { 2006 ctx->internal->app_verify_callback = cb; 2007 ctx->internal->app_verify_arg = arg; 2008 } 2009 2010 void 2011 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2012 { 2013 ctx->verify_mode = mode; 2014 ctx->internal->default_verify_callback = cb; 2015 } 2016 2017 void 2018 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2019 { 2020 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2021 } 2022 2023 void 2024 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2025 { 2026 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2027 int have_ecc_cert, have_ecdh_tmp; 2028 unsigned long mask_k, mask_a; 2029 X509 *x = NULL; 2030 CERT_PKEY *cpk; 2031 2032 if (c == NULL) 2033 return; 2034 2035 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2036 c->dh_tmp_auto != 0); 2037 2038 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2039 c->ecdh_tmp_auto != 0); 2040 2041 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2042 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2043 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2044 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2045 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2046 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2047 /* FIX THIS EAY EAY EAY */ 2048 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2049 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2050 mask_k = 0; 2051 mask_a = 0; 2052 2053 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2054 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2055 mask_k |= SSL_kGOST; 2056 mask_a |= SSL_aGOST01; 2057 } 2058 2059 if (rsa_enc) 2060 mask_k|=SSL_kRSA; 2061 2062 if (dh_tmp) 2063 mask_k|=SSL_kDHE; 2064 2065 if (rsa_enc || rsa_sign) 2066 mask_a|=SSL_aRSA; 2067 2068 if (dsa_sign) 2069 mask_a|=SSL_aDSS; 2070 2071 mask_a|=SSL_aNULL; 2072 2073 /* 2074 * An ECC certificate may be usable for ECDH and/or 2075 * ECDSA cipher suites depending on the key usage extension. 2076 */ 2077 if (have_ecc_cert) { 2078 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2079 2080 /* This call populates extension flags (ex_flags). */ 2081 X509_check_purpose(x, -1, 0); 2082 2083 /* Key usage, if present, must allow signing. */ 2084 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2085 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2086 mask_a|=SSL_aECDSA; 2087 } 2088 2089 if (have_ecdh_tmp) 2090 mask_k|=SSL_kECDHE; 2091 2092 c->mask_k = mask_k; 2093 c->mask_a = mask_a; 2094 c->valid = 1; 2095 } 2096 2097 int 2098 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2099 { 2100 const SSL_CIPHER *cs = S3I(s)->tmp.new_cipher; 2101 unsigned long alg_a; 2102 2103 alg_a = cs->algorithm_auth; 2104 2105 if (alg_a & SSL_aECDSA) { 2106 /* This call populates extension flags (ex_flags). */ 2107 X509_check_purpose(x, -1, 0); 2108 2109 /* Key usage, if present, must allow signing. */ 2110 if ((x->ex_flags & EXFLAG_KUSAGE) && 2111 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2112 SSLerror(SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2113 return (0); 2114 } 2115 } 2116 2117 return (1); 2118 } 2119 2120 CERT_PKEY * 2121 ssl_get_server_send_pkey(const SSL *s) 2122 { 2123 unsigned long alg_a; 2124 CERT *c; 2125 int i; 2126 2127 c = s->cert; 2128 ssl_set_cert_masks(c, S3I(s)->tmp.new_cipher); 2129 2130 alg_a = S3I(s)->tmp.new_cipher->algorithm_auth; 2131 2132 if (alg_a & SSL_aECDSA) { 2133 i = SSL_PKEY_ECC; 2134 } else if (alg_a & SSL_aDSS) { 2135 i = SSL_PKEY_DSA_SIGN; 2136 } else if (alg_a & SSL_aRSA) { 2137 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2138 i = SSL_PKEY_RSA_SIGN; 2139 else 2140 i = SSL_PKEY_RSA_ENC; 2141 } else if (alg_a & SSL_aGOST01) { 2142 i = SSL_PKEY_GOST01; 2143 } else { /* if (alg_a & SSL_aNULL) */ 2144 SSLerror(ERR_R_INTERNAL_ERROR); 2145 return (NULL); 2146 } 2147 2148 return (c->pkeys + i); 2149 } 2150 2151 X509 * 2152 ssl_get_server_send_cert(const SSL *s) 2153 { 2154 CERT_PKEY *cpk; 2155 2156 cpk = ssl_get_server_send_pkey(s); 2157 if (!cpk) 2158 return (NULL); 2159 return (cpk->x509); 2160 } 2161 2162 EVP_PKEY * 2163 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2164 { 2165 unsigned long alg_a; 2166 CERT *c; 2167 int idx = -1; 2168 2169 alg_a = cipher->algorithm_auth; 2170 c = s->cert; 2171 2172 if ((alg_a & SSL_aDSS) && 2173 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2174 idx = SSL_PKEY_DSA_SIGN; 2175 else if (alg_a & SSL_aRSA) { 2176 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2177 idx = SSL_PKEY_RSA_SIGN; 2178 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2179 idx = SSL_PKEY_RSA_ENC; 2180 } else if ((alg_a & SSL_aECDSA) && 2181 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2182 idx = SSL_PKEY_ECC; 2183 if (idx == -1) { 2184 SSLerror(ERR_R_INTERNAL_ERROR); 2185 return (NULL); 2186 } 2187 if (pmd) 2188 *pmd = c->pkeys[idx].digest; 2189 return (c->pkeys[idx].privatekey); 2190 } 2191 2192 DH * 2193 ssl_get_auto_dh(SSL *s) 2194 { 2195 CERT_PKEY *cpk; 2196 int keylen; 2197 DH *dhp; 2198 2199 if (s->cert->dh_tmp_auto == 2) { 2200 keylen = 1024; 2201 } else if (S3I(s)->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2202 keylen = 1024; 2203 if (S3I(s)->tmp.new_cipher->strength_bits == 256) 2204 keylen = 3072; 2205 } else { 2206 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2207 return (NULL); 2208 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2209 return (NULL); 2210 keylen = EVP_PKEY_bits(cpk->privatekey); 2211 } 2212 2213 if ((dhp = DH_new()) == NULL) 2214 return (NULL); 2215 2216 dhp->g = BN_new(); 2217 if (dhp->g != NULL) 2218 BN_set_word(dhp->g, 2); 2219 2220 if (keylen >= 8192) 2221 dhp->p = get_rfc3526_prime_8192(NULL); 2222 else if (keylen >= 4096) 2223 dhp->p = get_rfc3526_prime_4096(NULL); 2224 else if (keylen >= 3072) 2225 dhp->p = get_rfc3526_prime_3072(NULL); 2226 else if (keylen >= 2048) 2227 dhp->p = get_rfc3526_prime_2048(NULL); 2228 else if (keylen >= 1536) 2229 dhp->p = get_rfc3526_prime_1536(NULL); 2230 else 2231 dhp->p = get_rfc2409_prime_1024(NULL); 2232 2233 if (dhp->p == NULL || dhp->g == NULL) { 2234 DH_free(dhp); 2235 return (NULL); 2236 } 2237 return (dhp); 2238 } 2239 2240 void 2241 ssl_update_cache(SSL *s, int mode) 2242 { 2243 int i; 2244 2245 /* 2246 * If the session_id_length is 0, we are not supposed to cache it, 2247 * and it would be rather hard to do anyway :-) 2248 */ 2249 if (s->session->session_id_length == 0) 2250 return; 2251 2252 i = s->session_ctx->internal->session_cache_mode; 2253 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2254 || SSL_CTX_add_session(s->session_ctx, s->session)) 2255 && (s->session_ctx->internal->new_session_cb != NULL)) { 2256 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2257 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2258 SSL_SESSION_free(s->session); 2259 } 2260 2261 /* auto flush every 255 connections */ 2262 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2263 ((i & mode) == mode)) { 2264 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2265 s->session_ctx->internal->stats.sess_connect_good : 2266 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2267 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2268 } 2269 } 2270 } 2271 2272 const SSL_METHOD * 2273 SSL_get_ssl_method(SSL *s) 2274 { 2275 return (s->method); 2276 } 2277 2278 int 2279 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2280 { 2281 int conn = -1; 2282 int ret = 1; 2283 2284 if (s->method != meth) { 2285 if (s->internal->handshake_func != NULL) 2286 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2287 2288 if (s->method->internal->version == meth->internal->version) 2289 s->method = meth; 2290 else { 2291 s->method->internal->ssl_free(s); 2292 s->method = meth; 2293 ret = s->method->internal->ssl_new(s); 2294 } 2295 2296 if (conn == 1) 2297 s->internal->handshake_func = meth->internal->ssl_connect; 2298 else if (conn == 0) 2299 s->internal->handshake_func = meth->internal->ssl_accept; 2300 } 2301 return (ret); 2302 } 2303 2304 int 2305 SSL_get_error(const SSL *s, int i) 2306 { 2307 int reason; 2308 unsigned long l; 2309 BIO *bio; 2310 2311 if (i > 0) 2312 return (SSL_ERROR_NONE); 2313 2314 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2315 * etc, where we do encode the error */ 2316 if ((l = ERR_peek_error()) != 0) { 2317 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2318 return (SSL_ERROR_SYSCALL); 2319 else 2320 return (SSL_ERROR_SSL); 2321 } 2322 2323 if ((i < 0) && SSL_want_read(s)) { 2324 bio = SSL_get_rbio(s); 2325 if (BIO_should_read(bio)) { 2326 return (SSL_ERROR_WANT_READ); 2327 } else if (BIO_should_write(bio)) { 2328 /* 2329 * This one doesn't make too much sense... We never 2330 * try to write to the rbio, and an application 2331 * program where rbio and wbio are separate couldn't 2332 * even know what it should wait for. However if we 2333 * ever set s->internal->rwstate incorrectly (so that we have 2334 * SSL_want_read(s) instead of SSL_want_write(s)) 2335 * and rbio and wbio *are* the same, this test works 2336 * around that bug; so it might be safer to keep it. 2337 */ 2338 return (SSL_ERROR_WANT_WRITE); 2339 } else if (BIO_should_io_special(bio)) { 2340 reason = BIO_get_retry_reason(bio); 2341 if (reason == BIO_RR_CONNECT) 2342 return (SSL_ERROR_WANT_CONNECT); 2343 else if (reason == BIO_RR_ACCEPT) 2344 return (SSL_ERROR_WANT_ACCEPT); 2345 else 2346 return (SSL_ERROR_SYSCALL); /* unknown */ 2347 } 2348 } 2349 2350 if ((i < 0) && SSL_want_write(s)) { 2351 bio = SSL_get_wbio(s); 2352 if (BIO_should_write(bio)) { 2353 return (SSL_ERROR_WANT_WRITE); 2354 } else if (BIO_should_read(bio)) { 2355 /* 2356 * See above (SSL_want_read(s) with 2357 * BIO_should_write(bio)) 2358 */ 2359 return (SSL_ERROR_WANT_READ); 2360 } else if (BIO_should_io_special(bio)) { 2361 reason = BIO_get_retry_reason(bio); 2362 if (reason == BIO_RR_CONNECT) 2363 return (SSL_ERROR_WANT_CONNECT); 2364 else if (reason == BIO_RR_ACCEPT) 2365 return (SSL_ERROR_WANT_ACCEPT); 2366 else 2367 return (SSL_ERROR_SYSCALL); 2368 } 2369 } 2370 if ((i < 0) && SSL_want_x509_lookup(s)) { 2371 return (SSL_ERROR_WANT_X509_LOOKUP); 2372 } 2373 2374 if (i == 0) { 2375 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2376 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2377 return (SSL_ERROR_ZERO_RETURN); 2378 } 2379 return (SSL_ERROR_SYSCALL); 2380 } 2381 2382 int 2383 SSL_do_handshake(SSL *s) 2384 { 2385 int ret = 1; 2386 2387 if (s->internal->handshake_func == NULL) { 2388 SSLerror(SSL_R_CONNECTION_TYPE_NOT_SET); 2389 return (-1); 2390 } 2391 2392 s->method->internal->ssl_renegotiate_check(s); 2393 2394 if (SSL_in_init(s) || SSL_in_before(s)) { 2395 ret = s->internal->handshake_func(s); 2396 } 2397 return (ret); 2398 } 2399 2400 /* 2401 * For the next 2 functions, SSL_clear() sets shutdown and so 2402 * one of these calls will reset it 2403 */ 2404 void 2405 SSL_set_accept_state(SSL *s) 2406 { 2407 s->server = 1; 2408 s->internal->shutdown = 0; 2409 s->internal->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2410 s->internal->handshake_func = s->method->internal->ssl_accept; 2411 /* clear the current cipher */ 2412 ssl_clear_cipher_ctx(s); 2413 ssl_clear_hash_ctx(&s->read_hash); 2414 ssl_clear_hash_ctx(&s->internal->write_hash); 2415 } 2416 2417 void 2418 SSL_set_connect_state(SSL *s) 2419 { 2420 s->server = 0; 2421 s->internal->shutdown = 0; 2422 s->internal->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2423 s->internal->handshake_func = s->method->internal->ssl_connect; 2424 /* clear the current cipher */ 2425 ssl_clear_cipher_ctx(s); 2426 ssl_clear_hash_ctx(&s->read_hash); 2427 ssl_clear_hash_ctx(&s->internal->write_hash); 2428 } 2429 2430 int 2431 ssl_undefined_function(SSL *s) 2432 { 2433 SSLerror(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2434 return (0); 2435 } 2436 2437 int 2438 ssl_undefined_void_function(void) 2439 { 2440 SSLerror(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2441 return (0); 2442 } 2443 2444 int 2445 ssl_undefined_const_function(const SSL *s) 2446 { 2447 SSLerror(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2448 return (0); 2449 } 2450 2451 const char * 2452 ssl_version_string(int ver) 2453 { 2454 switch (ver) { 2455 case DTLS1_VERSION: 2456 return (SSL_TXT_DTLS1); 2457 case TLS1_VERSION: 2458 return (SSL_TXT_TLSV1); 2459 case TLS1_1_VERSION: 2460 return (SSL_TXT_TLSV1_1); 2461 case TLS1_2_VERSION: 2462 return (SSL_TXT_TLSV1_2); 2463 default: 2464 return ("unknown"); 2465 } 2466 } 2467 2468 const char * 2469 SSL_get_version(const SSL *s) 2470 { 2471 return ssl_version_string(s->version); 2472 } 2473 2474 SSL * 2475 SSL_dup(SSL *s) 2476 { 2477 STACK_OF(X509_NAME) *sk; 2478 X509_NAME *xn; 2479 SSL *ret; 2480 int i; 2481 2482 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2483 return (NULL); 2484 2485 ret->version = s->version; 2486 ret->internal->type = s->internal->type; 2487 ret->method = s->method; 2488 2489 if (s->session != NULL) { 2490 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2491 SSL_copy_session_id(ret, s); 2492 } else { 2493 /* 2494 * No session has been established yet, so we have to expect 2495 * that s->cert or ret->cert will be changed later -- 2496 * they should not both point to the same object, 2497 * and thus we can't use SSL_copy_session_id. 2498 */ 2499 2500 ret->method->internal->ssl_free(ret); 2501 ret->method = s->method; 2502 ret->method->internal->ssl_new(ret); 2503 2504 if (s->cert != NULL) { 2505 ssl_cert_free(ret->cert); 2506 ret->cert = ssl_cert_dup(s->cert); 2507 if (ret->cert == NULL) 2508 goto err; 2509 } 2510 2511 SSL_set_session_id_context(ret, 2512 s->sid_ctx, s->sid_ctx_length); 2513 } 2514 2515 ret->internal->options = s->internal->options; 2516 ret->internal->mode = s->internal->mode; 2517 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2518 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2519 ret->internal->msg_callback = s->internal->msg_callback; 2520 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2521 SSL_set_verify(ret, SSL_get_verify_mode(s), 2522 SSL_get_verify_callback(s)); 2523 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2524 ret->internal->generate_session_id = s->internal->generate_session_id; 2525 2526 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2527 2528 ret->internal->debug = s->internal->debug; 2529 2530 /* copy app data, a little dangerous perhaps */ 2531 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2532 &ret->internal->ex_data, &s->internal->ex_data)) 2533 goto err; 2534 2535 /* setup rbio, and wbio */ 2536 if (s->rbio != NULL) { 2537 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2538 goto err; 2539 } 2540 if (s->wbio != NULL) { 2541 if (s->wbio != s->rbio) { 2542 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2543 goto err; 2544 } else 2545 ret->wbio = ret->rbio; 2546 } 2547 ret->internal->rwstate = s->internal->rwstate; 2548 ret->internal->in_handshake = s->internal->in_handshake; 2549 ret->internal->handshake_func = s->internal->handshake_func; 2550 ret->server = s->server; 2551 ret->internal->renegotiate = s->internal->renegotiate; 2552 ret->internal->new_session = s->internal->new_session; 2553 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2554 ret->internal->shutdown = s->internal->shutdown; 2555 /* SSL_dup does not really work at any state, though */ 2556 ret->internal->state = s->internal->state; 2557 ret->internal->rstate = s->internal->rstate; 2558 2559 /* 2560 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2561 * ret->init_off 2562 */ 2563 ret->internal->init_num = 0; 2564 2565 ret->internal->hit = s->internal->hit; 2566 2567 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2568 2569 /* dup the cipher_list and cipher_list_by_id stacks */ 2570 if (s->cipher_list != NULL) { 2571 if ((ret->cipher_list = 2572 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2573 goto err; 2574 } 2575 if (s->internal->cipher_list_by_id != NULL) { 2576 if ((ret->internal->cipher_list_by_id = 2577 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2578 goto err; 2579 } 2580 2581 /* Dup the client_CA list */ 2582 if (s->internal->client_CA != NULL) { 2583 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2584 ret->internal->client_CA = sk; 2585 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2586 xn = sk_X509_NAME_value(sk, i); 2587 if (sk_X509_NAME_set(sk, i, 2588 X509_NAME_dup(xn)) == NULL) { 2589 X509_NAME_free(xn); 2590 goto err; 2591 } 2592 } 2593 } 2594 2595 if (0) { 2596 err: 2597 if (ret != NULL) 2598 SSL_free(ret); 2599 ret = NULL; 2600 } 2601 return (ret); 2602 } 2603 2604 void 2605 ssl_clear_cipher_ctx(SSL *s) 2606 { 2607 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2608 s->enc_read_ctx = NULL; 2609 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2610 s->internal->enc_write_ctx = NULL; 2611 2612 if (s->internal->aead_read_ctx != NULL) { 2613 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2614 free(s->internal->aead_read_ctx); 2615 s->internal->aead_read_ctx = NULL; 2616 } 2617 if (s->internal->aead_write_ctx != NULL) { 2618 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2619 free(s->internal->aead_write_ctx); 2620 s->internal->aead_write_ctx = NULL; 2621 } 2622 2623 } 2624 2625 /* Fix this function so that it takes an optional type parameter */ 2626 X509 * 2627 SSL_get_certificate(const SSL *s) 2628 { 2629 if (s->cert != NULL) 2630 return (s->cert->key->x509); 2631 else 2632 return (NULL); 2633 } 2634 2635 /* Fix this function so that it takes an optional type parameter */ 2636 EVP_PKEY * 2637 SSL_get_privatekey(SSL *s) 2638 { 2639 if (s->cert != NULL) 2640 return (s->cert->key->privatekey); 2641 else 2642 return (NULL); 2643 } 2644 2645 const SSL_CIPHER * 2646 SSL_get_current_cipher(const SSL *s) 2647 { 2648 if ((s->session != NULL) && (s->session->cipher != NULL)) 2649 return (s->session->cipher); 2650 return (NULL); 2651 } 2652 const void * 2653 SSL_get_current_compression(SSL *s) 2654 { 2655 return (NULL); 2656 } 2657 2658 const void * 2659 SSL_get_current_expansion(SSL *s) 2660 { 2661 return (NULL); 2662 } 2663 2664 int 2665 ssl_init_wbio_buffer(SSL *s, int push) 2666 { 2667 BIO *bbio; 2668 2669 if (s->bbio == NULL) { 2670 bbio = BIO_new(BIO_f_buffer()); 2671 if (bbio == NULL) 2672 return (0); 2673 s->bbio = bbio; 2674 } else { 2675 bbio = s->bbio; 2676 if (s->bbio == s->wbio) 2677 s->wbio = BIO_pop(s->wbio); 2678 } 2679 (void)BIO_reset(bbio); 2680 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2681 if (!BIO_set_read_buffer_size(bbio, 1)) { 2682 SSLerror(ERR_R_BUF_LIB); 2683 return (0); 2684 } 2685 if (push) { 2686 if (s->wbio != bbio) 2687 s->wbio = BIO_push(bbio, s->wbio); 2688 } else { 2689 if (s->wbio == bbio) 2690 s->wbio = BIO_pop(bbio); 2691 } 2692 return (1); 2693 } 2694 2695 void 2696 ssl_free_wbio_buffer(SSL *s) 2697 { 2698 if (s == NULL) 2699 return; 2700 2701 if (s->bbio == NULL) 2702 return; 2703 2704 if (s->bbio == s->wbio) { 2705 /* remove buffering */ 2706 s->wbio = BIO_pop(s->wbio); 2707 } 2708 BIO_free(s->bbio); 2709 s->bbio = NULL; 2710 } 2711 2712 void 2713 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2714 { 2715 ctx->internal->quiet_shutdown = mode; 2716 } 2717 2718 int 2719 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2720 { 2721 return (ctx->internal->quiet_shutdown); 2722 } 2723 2724 void 2725 SSL_set_quiet_shutdown(SSL *s, int mode) 2726 { 2727 s->internal->quiet_shutdown = mode; 2728 } 2729 2730 int 2731 SSL_get_quiet_shutdown(const SSL *s) 2732 { 2733 return (s->internal->quiet_shutdown); 2734 } 2735 2736 void 2737 SSL_set_shutdown(SSL *s, int mode) 2738 { 2739 s->internal->shutdown = mode; 2740 } 2741 2742 int 2743 SSL_get_shutdown(const SSL *s) 2744 { 2745 return (s->internal->shutdown); 2746 } 2747 2748 int 2749 SSL_version(const SSL *s) 2750 { 2751 return (s->version); 2752 } 2753 2754 SSL_CTX * 2755 SSL_get_SSL_CTX(const SSL *ssl) 2756 { 2757 return (ssl->ctx); 2758 } 2759 2760 SSL_CTX * 2761 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2762 { 2763 CERT *ocert = ssl->cert; 2764 2765 if (ssl->ctx == ctx) 2766 return (ssl->ctx); 2767 if (ctx == NULL) 2768 ctx = ssl->initial_ctx; 2769 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2770 if (ocert != NULL) { 2771 int i; 2772 /* Copy negotiated digests from original certificate. */ 2773 for (i = 0; i < SSL_PKEY_NUM; i++) 2774 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2775 ssl_cert_free(ocert); 2776 } 2777 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2778 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2779 ssl->ctx = ctx; 2780 return (ssl->ctx); 2781 } 2782 2783 int 2784 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2785 { 2786 return (X509_STORE_set_default_paths(ctx->cert_store)); 2787 } 2788 2789 int 2790 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2791 const char *CApath) 2792 { 2793 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2794 } 2795 2796 int 2797 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2798 { 2799 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2800 } 2801 2802 void 2803 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2804 { 2805 ssl->internal->info_callback = cb; 2806 } 2807 2808 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2809 { 2810 return (ssl->internal->info_callback); 2811 } 2812 2813 int 2814 SSL_state(const SSL *ssl) 2815 { 2816 return (ssl->internal->state); 2817 } 2818 2819 void 2820 SSL_set_state(SSL *ssl, int state) 2821 { 2822 ssl->internal->state = state; 2823 } 2824 2825 void 2826 SSL_set_verify_result(SSL *ssl, long arg) 2827 { 2828 ssl->verify_result = arg; 2829 } 2830 2831 long 2832 SSL_get_verify_result(const SSL *ssl) 2833 { 2834 return (ssl->verify_result); 2835 } 2836 2837 int 2838 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2839 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2840 { 2841 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2842 new_func, dup_func, free_func)); 2843 } 2844 2845 int 2846 SSL_set_ex_data(SSL *s, int idx, void *arg) 2847 { 2848 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2849 } 2850 2851 void * 2852 SSL_get_ex_data(const SSL *s, int idx) 2853 { 2854 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2855 } 2856 2857 int 2858 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2859 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2860 { 2861 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2862 new_func, dup_func, free_func)); 2863 } 2864 2865 int 2866 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2867 { 2868 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2869 } 2870 2871 void * 2872 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2873 { 2874 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2875 } 2876 2877 int 2878 ssl_ok(SSL *s) 2879 { 2880 return (1); 2881 } 2882 2883 X509_STORE * 2884 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2885 { 2886 return (ctx->cert_store); 2887 } 2888 2889 void 2890 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2891 { 2892 X509_STORE_free(ctx->cert_store); 2893 ctx->cert_store = store; 2894 } 2895 2896 int 2897 SSL_want(const SSL *s) 2898 { 2899 return (s->internal->rwstate); 2900 } 2901 2902 void 2903 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2904 int keylength)) 2905 { 2906 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2907 } 2908 2909 void 2910 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2911 int keylength)) 2912 { 2913 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2914 } 2915 2916 void 2917 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2918 int keylength)) 2919 { 2920 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2921 } 2922 2923 void 2924 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2925 int keylength)) 2926 { 2927 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2928 } 2929 2930 void 2931 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2932 int is_export, int keylength)) 2933 { 2934 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2935 (void (*)(void))ecdh); 2936 } 2937 2938 void 2939 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2940 int keylength)) 2941 { 2942 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2943 } 2944 2945 2946 void 2947 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2948 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2949 { 2950 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2951 (void (*)(void))cb); 2952 } 2953 2954 void 2955 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2956 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2957 { 2958 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2959 } 2960 2961 void 2962 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2963 { 2964 if (*hash) 2965 EVP_MD_CTX_destroy(*hash); 2966 *hash = NULL; 2967 } 2968 2969 void 2970 SSL_set_debug(SSL *s, int debug) 2971 { 2972 s->internal->debug = debug; 2973 } 2974 2975 int 2976 SSL_cache_hit(SSL *s) 2977 { 2978 return (s->internal->hit); 2979 } 2980 2981 2982 static int 2983 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2984 { 2985 SSL_CIPHER const *a = a_; 2986 SSL_CIPHER const *b = b_; 2987 return ssl_cipher_id_cmp(a, b); 2988 } 2989 2990 SSL_CIPHER * 2991 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 2992 { 2993 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 2994 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 2995 } 2996