1 /* $OpenBSD: ssl_lib.c,v 1.189 2018/09/05 16:58:59 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <stdio.h> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #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(s, 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(s, ERR_R_INTERNAL_ERROR); 181 return (0); 182 } 183 184 s->internal->type = 0; 185 186 s->version = s->method->internal->version; 187 s->client_version = s->version; 188 s->internal->rwstate = SSL_NOTHING; 189 s->internal->rstate = SSL_ST_READ_HEADER; 190 191 BUF_MEM_free(s->internal->init_buf); 192 s->internal->init_buf = NULL; 193 194 ssl_clear_cipher_state(s); 195 196 s->internal->first_packet = 0; 197 198 /* 199 * Check to see if we were changed into a different method, if 200 * so, revert back if we are not doing session-id reuse. 201 */ 202 if (!s->internal->in_handshake && (s->session == NULL) && 203 (s->method != s->ctx->method)) { 204 s->method->internal->ssl_free(s); 205 s->method = s->ctx->method; 206 if (!s->method->internal->ssl_new(s)) 207 return (0); 208 } else 209 s->method->internal->ssl_clear(s); 210 211 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 212 213 return (1); 214 } 215 216 /* Used to change an SSL_CTXs default SSL method type */ 217 int 218 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 219 { 220 STACK_OF(SSL_CIPHER) *sk; 221 222 ctx->method = meth; 223 224 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 225 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 226 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 227 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 228 return (0); 229 } 230 return (1); 231 } 232 233 SSL * 234 SSL_new(SSL_CTX *ctx) 235 { 236 SSL *s; 237 238 if (ctx == NULL) { 239 SSLerrorx(SSL_R_NULL_SSL_CTX); 240 return (NULL); 241 } 242 if (ctx->method == NULL) { 243 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 244 return (NULL); 245 } 246 247 if ((s = calloc(1, sizeof(*s))) == NULL) { 248 SSLerrorx(ERR_R_MALLOC_FAILURE); 249 return (NULL); 250 } 251 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 252 free(s); 253 SSLerrorx(ERR_R_MALLOC_FAILURE); 254 return (NULL); 255 } 256 257 s->internal->min_version = ctx->internal->min_version; 258 s->internal->max_version = ctx->internal->max_version; 259 260 s->internal->options = ctx->internal->options; 261 s->internal->mode = ctx->internal->mode; 262 s->internal->max_cert_list = ctx->internal->max_cert_list; 263 264 if (ctx->internal->cert != NULL) { 265 /* 266 * Earlier library versions used to copy the pointer to 267 * the CERT, not its contents; only when setting new 268 * parameters for the per-SSL copy, ssl_cert_new would be 269 * called (and the direct reference to the per-SSL_CTX 270 * settings would be lost, but those still were indirectly 271 * accessed for various purposes, and for that reason they 272 * used to be known as s->ctx->default_cert). 273 * Now we don't look at the SSL_CTX's CERT after having 274 * duplicated it once. 275 */ 276 s->cert = ssl_cert_dup(ctx->internal->cert); 277 if (s->cert == NULL) 278 goto err; 279 } else 280 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 281 282 s->internal->read_ahead = ctx->internal->read_ahead; 283 s->internal->msg_callback = ctx->internal->msg_callback; 284 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 285 s->verify_mode = ctx->verify_mode; 286 s->sid_ctx_length = ctx->sid_ctx_length; 287 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 288 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 289 s->internal->verify_callback = ctx->internal->default_verify_callback; 290 s->internal->generate_session_id = ctx->internal->generate_session_id; 291 292 s->param = X509_VERIFY_PARAM_new(); 293 if (!s->param) 294 goto err; 295 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 296 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 297 s->max_send_fragment = ctx->internal->max_send_fragment; 298 299 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 300 s->ctx = ctx; 301 s->internal->tlsext_debug_cb = 0; 302 s->internal->tlsext_debug_arg = NULL; 303 s->internal->tlsext_ticket_expected = 0; 304 s->tlsext_status_type = -1; 305 s->internal->tlsext_status_expected = 0; 306 s->internal->tlsext_ocsp_ids = NULL; 307 s->internal->tlsext_ocsp_exts = NULL; 308 s->internal->tlsext_ocsp_resp = NULL; 309 s->internal->tlsext_ocsp_resplen = -1; 310 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 311 s->initial_ctx = ctx; 312 313 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 314 s->internal->tlsext_ecpointformatlist = 315 calloc(ctx->internal->tlsext_ecpointformatlist_length, 316 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 317 if (s->internal->tlsext_ecpointformatlist == NULL) 318 goto err; 319 memcpy(s->internal->tlsext_ecpointformatlist, 320 ctx->internal->tlsext_ecpointformatlist, 321 ctx->internal->tlsext_ecpointformatlist_length * 322 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 323 s->internal->tlsext_ecpointformatlist_length = 324 ctx->internal->tlsext_ecpointformatlist_length; 325 } 326 if (ctx->internal->tlsext_supportedgroups != NULL) { 327 s->internal->tlsext_supportedgroups = 328 calloc(ctx->internal->tlsext_supportedgroups_length, 329 sizeof(ctx->internal->tlsext_supportedgroups)); 330 if (s->internal->tlsext_supportedgroups == NULL) 331 goto err; 332 memcpy(s->internal->tlsext_supportedgroups, 333 ctx->internal->tlsext_supportedgroups, 334 ctx->internal->tlsext_supportedgroups_length * 335 sizeof(ctx->internal->tlsext_supportedgroups[0])); 336 s->internal->tlsext_supportedgroups_length = 337 ctx->internal->tlsext_supportedgroups_length; 338 } 339 340 if (s->ctx->internal->alpn_client_proto_list != NULL) { 341 s->internal->alpn_client_proto_list = 342 malloc(s->ctx->internal->alpn_client_proto_list_len); 343 if (s->internal->alpn_client_proto_list == NULL) 344 goto err; 345 memcpy(s->internal->alpn_client_proto_list, 346 s->ctx->internal->alpn_client_proto_list, 347 s->ctx->internal->alpn_client_proto_list_len); 348 s->internal->alpn_client_proto_list_len = 349 s->ctx->internal->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->internal->ssl_new(s)) 357 goto err; 358 359 s->references = 1; 360 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 361 362 SSL_clear(s); 363 364 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 365 366 return (s); 367 368 err: 369 SSL_free(s); 370 SSLerrorx(ERR_R_MALLOC_FAILURE); 371 return (NULL); 372 } 373 374 int 375 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 376 unsigned int sid_ctx_len) 377 { 378 if (sid_ctx_len > sizeof ctx->sid_ctx) { 379 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 380 return (0); 381 } 382 ctx->sid_ctx_length = sid_ctx_len; 383 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 384 385 return (1); 386 } 387 388 int 389 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 390 unsigned int sid_ctx_len) 391 { 392 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 393 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 394 return (0); 395 } 396 ssl->sid_ctx_length = sid_ctx_len; 397 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 398 399 return (1); 400 } 401 402 int 403 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 404 { 405 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 406 ctx->internal->generate_session_id = cb; 407 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 408 return (1); 409 } 410 411 int 412 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 413 { 414 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 415 ssl->internal->generate_session_id = cb; 416 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 417 return (1); 418 } 419 420 int 421 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 422 unsigned int id_len) 423 { 424 /* 425 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 426 * shows how we can "construct" a session to give us the desired 427 * check - ie. to find if there's a session in the hash table 428 * that would conflict with any new session built out of this 429 * id/id_len and the ssl_version in use by this SSL. 430 */ 431 SSL_SESSION r, *p; 432 433 if (id_len > sizeof r.session_id) 434 return (0); 435 436 r.ssl_version = ssl->version; 437 r.session_id_length = id_len; 438 memcpy(r.session_id, id, id_len); 439 440 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 441 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 442 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 443 return (p != NULL); 444 } 445 446 int 447 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 448 { 449 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 450 } 451 452 int 453 SSL_set_purpose(SSL *s, int purpose) 454 { 455 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 456 } 457 458 int 459 SSL_CTX_set_trust(SSL_CTX *s, int trust) 460 { 461 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 462 } 463 464 int 465 SSL_set_trust(SSL *s, int trust) 466 { 467 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 468 } 469 470 X509_VERIFY_PARAM * 471 SSL_CTX_get0_param(SSL_CTX *ctx) 472 { 473 return (ctx->param); 474 } 475 476 int 477 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 478 { 479 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 480 } 481 482 X509_VERIFY_PARAM * 483 SSL_get0_param(SSL *ssl) 484 { 485 return (ssl->param); 486 } 487 488 int 489 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 490 { 491 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 492 } 493 494 void 495 SSL_free(SSL *s) 496 { 497 int i; 498 499 if (s == NULL) 500 return; 501 502 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 503 if (i > 0) 504 return; 505 506 X509_VERIFY_PARAM_free(s->param); 507 508 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 509 510 if (s->bbio != NULL) { 511 /* If the buffering BIO is in place, pop it off */ 512 if (s->bbio == s->wbio) { 513 s->wbio = BIO_pop(s->wbio); 514 } 515 BIO_free(s->bbio); 516 s->bbio = NULL; 517 } 518 519 if (s->rbio != s->wbio) 520 BIO_free_all(s->rbio); 521 BIO_free_all(s->wbio); 522 523 BUF_MEM_free(s->internal->init_buf); 524 525 /* add extra stuff */ 526 sk_SSL_CIPHER_free(s->cipher_list); 527 sk_SSL_CIPHER_free(s->internal->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_state(s); 536 537 ssl_cert_free(s->cert); 538 539 free(s->tlsext_hostname); 540 SSL_CTX_free(s->initial_ctx); 541 542 free(s->internal->tlsext_ecpointformatlist); 543 free(s->internal->tlsext_supportedgroups); 544 545 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 546 X509_EXTENSION_free); 547 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 548 free(s->internal->tlsext_ocsp_resp); 549 550 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 551 552 if (s->method != NULL) 553 s->method->internal->ssl_free(s); 554 555 SSL_CTX_free(s->ctx); 556 557 free(s->internal->alpn_client_proto_list); 558 559 #ifndef OPENSSL_NO_SRTP 560 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 561 #endif 562 563 free(s->internal); 564 free(s); 565 } 566 567 int 568 SSL_up_ref(SSL *s) 569 { 570 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 571 return (refs > 1) ? 1 : 0; 572 } 573 574 void 575 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 576 { 577 /* If the output buffering BIO is still in place, remove it */ 578 if (s->bbio != NULL) { 579 if (s->wbio == s->bbio) { 580 s->wbio = s->wbio->next_bio; 581 s->bbio->next_bio = NULL; 582 } 583 } 584 585 if (s->rbio != rbio && s->rbio != s->wbio) 586 BIO_free_all(s->rbio); 587 if (s->wbio != wbio) 588 BIO_free_all(s->wbio); 589 s->rbio = rbio; 590 s->wbio = wbio; 591 } 592 593 BIO * 594 SSL_get_rbio(const SSL *s) 595 { 596 return (s->rbio); 597 } 598 599 BIO * 600 SSL_get_wbio(const SSL *s) 601 { 602 return (s->wbio); 603 } 604 605 int 606 SSL_get_fd(const SSL *s) 607 { 608 return (SSL_get_rfd(s)); 609 } 610 611 int 612 SSL_get_rfd(const SSL *s) 613 { 614 int ret = -1; 615 BIO *b, *r; 616 617 b = SSL_get_rbio(s); 618 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 619 if (r != NULL) 620 BIO_get_fd(r, &ret); 621 return (ret); 622 } 623 624 int 625 SSL_get_wfd(const SSL *s) 626 { 627 int ret = -1; 628 BIO *b, *r; 629 630 b = SSL_get_wbio(s); 631 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 632 if (r != NULL) 633 BIO_get_fd(r, &ret); 634 return (ret); 635 } 636 637 int 638 SSL_set_fd(SSL *s, int fd) 639 { 640 int ret = 0; 641 BIO *bio = NULL; 642 643 bio = BIO_new(BIO_s_socket()); 644 645 if (bio == NULL) { 646 SSLerror(s, ERR_R_BUF_LIB); 647 goto err; 648 } 649 BIO_set_fd(bio, fd, BIO_NOCLOSE); 650 SSL_set_bio(s, bio, bio); 651 ret = 1; 652 err: 653 return (ret); 654 } 655 656 int 657 SSL_set_wfd(SSL *s, int fd) 658 { 659 int ret = 0; 660 BIO *bio = NULL; 661 662 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 663 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 664 bio = BIO_new(BIO_s_socket()); 665 666 if (bio == NULL) { 667 SSLerror(s, ERR_R_BUF_LIB); 668 goto err; 669 } 670 BIO_set_fd(bio, fd, BIO_NOCLOSE); 671 SSL_set_bio(s, SSL_get_rbio(s), bio); 672 } else 673 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 674 ret = 1; 675 err: 676 return (ret); 677 } 678 679 int 680 SSL_set_rfd(SSL *s, int fd) 681 { 682 int ret = 0; 683 BIO *bio = NULL; 684 685 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 686 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 687 bio = BIO_new(BIO_s_socket()); 688 689 if (bio == NULL) { 690 SSLerror(s, ERR_R_BUF_LIB); 691 goto err; 692 } 693 BIO_set_fd(bio, fd, BIO_NOCLOSE); 694 SSL_set_bio(s, bio, SSL_get_wbio(s)); 695 } else 696 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 697 ret = 1; 698 err: 699 return (ret); 700 } 701 702 703 /* return length of latest Finished message we sent, copy to 'buf' */ 704 size_t 705 SSL_get_finished(const SSL *s, void *buf, size_t count) 706 { 707 size_t ret = 0; 708 709 if (s->s3 != NULL) { 710 ret = S3I(s)->tmp.finish_md_len; 711 if (count > ret) 712 count = ret; 713 memcpy(buf, S3I(s)->tmp.finish_md, count); 714 } 715 return (ret); 716 } 717 718 /* return length of latest Finished message we expected, copy to 'buf' */ 719 size_t 720 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 721 { 722 size_t ret = 0; 723 724 if (s->s3 != NULL) { 725 ret = S3I(s)->tmp.peer_finish_md_len; 726 if (count > ret) 727 count = ret; 728 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 729 } 730 return (ret); 731 } 732 733 734 int 735 SSL_get_verify_mode(const SSL *s) 736 { 737 return (s->verify_mode); 738 } 739 740 int 741 SSL_get_verify_depth(const SSL *s) 742 { 743 return (X509_VERIFY_PARAM_get_depth(s->param)); 744 } 745 746 int 747 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 748 { 749 return (s->internal->verify_callback); 750 } 751 752 int 753 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 754 { 755 return (ctx->verify_mode); 756 } 757 758 int 759 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 760 { 761 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 762 } 763 764 int 765 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 766 { 767 return (ctx->internal->default_verify_callback); 768 } 769 770 void 771 SSL_set_verify(SSL *s, int mode, 772 int (*callback)(int ok, X509_STORE_CTX *ctx)) 773 { 774 s->verify_mode = mode; 775 if (callback != NULL) 776 s->internal->verify_callback = callback; 777 } 778 779 void 780 SSL_set_verify_depth(SSL *s, int depth) 781 { 782 X509_VERIFY_PARAM_set_depth(s->param, depth); 783 } 784 785 void 786 SSL_set_read_ahead(SSL *s, int yes) 787 { 788 s->internal->read_ahead = yes; 789 } 790 791 int 792 SSL_get_read_ahead(const SSL *s) 793 { 794 return (s->internal->read_ahead); 795 } 796 797 int 798 SSL_pending(const SSL *s) 799 { 800 /* 801 * SSL_pending cannot work properly if read-ahead is enabled 802 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 803 * and it is impossible to fix since SSL_pending cannot report 804 * errors that may be observed while scanning the new data. 805 * (Note that SSL_pending() is often used as a boolean value, 806 * so we'd better not return -1.) 807 */ 808 return (ssl3_pending(s)); 809 } 810 811 X509 * 812 SSL_get_peer_certificate(const SSL *s) 813 { 814 X509 *r; 815 816 if ((s == NULL) || (s->session == NULL)) 817 r = NULL; 818 else 819 r = s->session->peer; 820 821 if (r == NULL) 822 return (r); 823 824 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 825 826 return (r); 827 } 828 829 STACK_OF(X509) * 830 SSL_get_peer_cert_chain(const SSL *s) 831 { 832 STACK_OF(X509) *r; 833 834 if ((s == NULL) || (s->session == NULL) || 835 (SSI(s)->sess_cert == NULL)) 836 r = NULL; 837 else 838 r = SSI(s)->sess_cert->cert_chain; 839 840 /* 841 * If we are a client, cert_chain includes the peer's own 842 * certificate; 843 * if we are a server, it does not. 844 */ 845 return (r); 846 } 847 848 /* 849 * Now in theory, since the calling process own 't' it should be safe to 850 * modify. We need to be able to read f without being hassled 851 */ 852 int 853 SSL_copy_session_id(SSL *t, const SSL *f) 854 { 855 CERT *tmp; 856 857 /* Do we need to do SSL locking? */ 858 if (!SSL_set_session(t, SSL_get_session(f))) 859 return 0; 860 861 /* What if we are set up for one protocol but want to talk another? */ 862 if (t->method != f->method) { 863 t->method->internal->ssl_free(t); 864 t->method = f->method; 865 if (!t->method->internal->ssl_new(t)) 866 return 0; 867 } 868 869 tmp = t->cert; 870 if (f->cert != NULL) { 871 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 872 t->cert = f->cert; 873 } else 874 t->cert = NULL; 875 ssl_cert_free(tmp); 876 877 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 878 return 0; 879 880 return 1; 881 } 882 883 /* Fix this so it checks all the valid key/cert options */ 884 int 885 SSL_CTX_check_private_key(const SSL_CTX *ctx) 886 { 887 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 888 (ctx->internal->cert->key->x509 == NULL)) { 889 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 890 return (0); 891 } 892 if (ctx->internal->cert->key->privatekey == NULL) { 893 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 894 return (0); 895 } 896 return (X509_check_private_key(ctx->internal->cert->key->x509, 897 ctx->internal->cert->key->privatekey)); 898 } 899 900 /* Fix this function so that it takes an optional type parameter */ 901 int 902 SSL_check_private_key(const SSL *ssl) 903 { 904 if (ssl == NULL) { 905 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 906 return (0); 907 } 908 if (ssl->cert == NULL) { 909 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 910 return (0); 911 } 912 if (ssl->cert->key->x509 == NULL) { 913 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 914 return (0); 915 } 916 if (ssl->cert->key->privatekey == NULL) { 917 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 918 return (0); 919 } 920 return (X509_check_private_key(ssl->cert->key->x509, 921 ssl->cert->key->privatekey)); 922 } 923 924 int 925 SSL_accept(SSL *s) 926 { 927 if (s->internal->handshake_func == NULL) 928 SSL_set_accept_state(s); /* Not properly initialized yet */ 929 930 return (s->method->internal->ssl_accept(s)); 931 } 932 933 int 934 SSL_connect(SSL *s) 935 { 936 if (s->internal->handshake_func == NULL) 937 SSL_set_connect_state(s); /* Not properly initialized yet */ 938 939 return (s->method->internal->ssl_connect(s)); 940 } 941 942 int 943 SSL_is_server(const SSL *s) 944 { 945 return s->server; 946 } 947 948 long 949 SSL_get_default_timeout(const SSL *s) 950 { 951 return (s->method->internal->get_timeout()); 952 } 953 954 int 955 SSL_read(SSL *s, void *buf, int num) 956 { 957 if (s->internal->handshake_func == NULL) { 958 SSLerror(s, SSL_R_UNINITIALIZED); 959 return (-1); 960 } 961 962 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 963 s->internal->rwstate = SSL_NOTHING; 964 return (0); 965 } 966 return ssl3_read(s, buf, num); 967 } 968 969 int 970 SSL_peek(SSL *s, void *buf, int num) 971 { 972 if (s->internal->handshake_func == NULL) { 973 SSLerror(s, SSL_R_UNINITIALIZED); 974 return (-1); 975 } 976 977 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 978 return (0); 979 } 980 return ssl3_peek(s, buf, num); 981 } 982 983 int 984 SSL_write(SSL *s, const void *buf, int num) 985 { 986 if (s->internal->handshake_func == NULL) { 987 SSLerror(s, SSL_R_UNINITIALIZED); 988 return (-1); 989 } 990 991 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 992 s->internal->rwstate = SSL_NOTHING; 993 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 994 return (-1); 995 } 996 return ssl3_write(s, buf, num); 997 } 998 999 int 1000 SSL_shutdown(SSL *s) 1001 { 1002 /* 1003 * Note that this function behaves differently from what one might 1004 * expect. Return values are 0 for no success (yet), 1005 * 1 for success; but calling it once is usually not enough, 1006 * even if blocking I/O is used (see ssl3_shutdown). 1007 */ 1008 1009 if (s->internal->handshake_func == NULL) { 1010 SSLerror(s, SSL_R_UNINITIALIZED); 1011 return (-1); 1012 } 1013 1014 if (s != NULL && !SSL_in_init(s)) 1015 return (ssl3_shutdown(s)); 1016 1017 return (1); 1018 } 1019 1020 int 1021 SSL_renegotiate(SSL *s) 1022 { 1023 if (s->internal->renegotiate == 0) 1024 s->internal->renegotiate = 1; 1025 1026 s->internal->new_session = 1; 1027 1028 return (s->method->internal->ssl_renegotiate(s)); 1029 } 1030 1031 int 1032 SSL_renegotiate_abbreviated(SSL *s) 1033 { 1034 if (s->internal->renegotiate == 0) 1035 s->internal->renegotiate = 1; 1036 1037 s->internal->new_session = 0; 1038 1039 return (s->method->internal->ssl_renegotiate(s)); 1040 } 1041 1042 int 1043 SSL_renegotiate_pending(SSL *s) 1044 { 1045 /* 1046 * Becomes true when negotiation is requested; 1047 * false again once a handshake has finished. 1048 */ 1049 return (s->internal->renegotiate != 0); 1050 } 1051 1052 long 1053 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1054 { 1055 long l; 1056 1057 switch (cmd) { 1058 case SSL_CTRL_GET_READ_AHEAD: 1059 return (s->internal->read_ahead); 1060 case SSL_CTRL_SET_READ_AHEAD: 1061 l = s->internal->read_ahead; 1062 s->internal->read_ahead = larg; 1063 return (l); 1064 1065 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1066 s->internal->msg_callback_arg = parg; 1067 return (1); 1068 1069 case SSL_CTRL_OPTIONS: 1070 return (s->internal->options|=larg); 1071 case SSL_CTRL_CLEAR_OPTIONS: 1072 return (s->internal->options&=~larg); 1073 case SSL_CTRL_MODE: 1074 return (s->internal->mode|=larg); 1075 case SSL_CTRL_CLEAR_MODE: 1076 return (s->internal->mode &=~larg); 1077 case SSL_CTRL_GET_MAX_CERT_LIST: 1078 return (s->internal->max_cert_list); 1079 case SSL_CTRL_SET_MAX_CERT_LIST: 1080 l = s->internal->max_cert_list; 1081 s->internal->max_cert_list = larg; 1082 return (l); 1083 case SSL_CTRL_SET_MTU: 1084 #ifndef OPENSSL_NO_DTLS1 1085 if (larg < (long)dtls1_min_mtu()) 1086 return (0); 1087 #endif 1088 if (SSL_IS_DTLS(s)) { 1089 D1I(s)->mtu = larg; 1090 return (larg); 1091 } 1092 return (0); 1093 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1094 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1095 return (0); 1096 s->max_send_fragment = larg; 1097 return (1); 1098 case SSL_CTRL_GET_RI_SUPPORT: 1099 if (s->s3) 1100 return (S3I(s)->send_connection_binding); 1101 else return (0); 1102 default: 1103 if (SSL_IS_DTLS(s)) 1104 return dtls1_ctrl(s, cmd, larg, parg); 1105 return ssl3_ctrl(s, cmd, larg, parg); 1106 } 1107 } 1108 1109 long 1110 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1111 { 1112 switch (cmd) { 1113 case SSL_CTRL_SET_MSG_CALLBACK: 1114 s->internal->msg_callback = (void (*)(int write_p, int version, 1115 int content_type, const void *buf, size_t len, 1116 SSL *ssl, void *arg))(fp); 1117 return (1); 1118 1119 default: 1120 return (ssl3_callback_ctrl(s, cmd, fp)); 1121 } 1122 } 1123 1124 struct lhash_st_SSL_SESSION * 1125 SSL_CTX_sessions(SSL_CTX *ctx) 1126 { 1127 return (ctx->internal->sessions); 1128 } 1129 1130 long 1131 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1132 { 1133 long l; 1134 1135 switch (cmd) { 1136 case SSL_CTRL_GET_READ_AHEAD: 1137 return (ctx->internal->read_ahead); 1138 case SSL_CTRL_SET_READ_AHEAD: 1139 l = ctx->internal->read_ahead; 1140 ctx->internal->read_ahead = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1144 ctx->internal->msg_callback_arg = parg; 1145 return (1); 1146 1147 case SSL_CTRL_GET_MAX_CERT_LIST: 1148 return (ctx->internal->max_cert_list); 1149 case SSL_CTRL_SET_MAX_CERT_LIST: 1150 l = ctx->internal->max_cert_list; 1151 ctx->internal->max_cert_list = larg; 1152 return (l); 1153 1154 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1155 l = ctx->internal->session_cache_size; 1156 ctx->internal->session_cache_size = larg; 1157 return (l); 1158 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1159 return (ctx->internal->session_cache_size); 1160 case SSL_CTRL_SET_SESS_CACHE_MODE: 1161 l = ctx->internal->session_cache_mode; 1162 ctx->internal->session_cache_mode = larg; 1163 return (l); 1164 case SSL_CTRL_GET_SESS_CACHE_MODE: 1165 return (ctx->internal->session_cache_mode); 1166 1167 case SSL_CTRL_SESS_NUMBER: 1168 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1169 case SSL_CTRL_SESS_CONNECT: 1170 return (ctx->internal->stats.sess_connect); 1171 case SSL_CTRL_SESS_CONNECT_GOOD: 1172 return (ctx->internal->stats.sess_connect_good); 1173 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1174 return (ctx->internal->stats.sess_connect_renegotiate); 1175 case SSL_CTRL_SESS_ACCEPT: 1176 return (ctx->internal->stats.sess_accept); 1177 case SSL_CTRL_SESS_ACCEPT_GOOD: 1178 return (ctx->internal->stats.sess_accept_good); 1179 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1180 return (ctx->internal->stats.sess_accept_renegotiate); 1181 case SSL_CTRL_SESS_HIT: 1182 return (ctx->internal->stats.sess_hit); 1183 case SSL_CTRL_SESS_CB_HIT: 1184 return (ctx->internal->stats.sess_cb_hit); 1185 case SSL_CTRL_SESS_MISSES: 1186 return (ctx->internal->stats.sess_miss); 1187 case SSL_CTRL_SESS_TIMEOUTS: 1188 return (ctx->internal->stats.sess_timeout); 1189 case SSL_CTRL_SESS_CACHE_FULL: 1190 return (ctx->internal->stats.sess_cache_full); 1191 case SSL_CTRL_OPTIONS: 1192 return (ctx->internal->options|=larg); 1193 case SSL_CTRL_CLEAR_OPTIONS: 1194 return (ctx->internal->options&=~larg); 1195 case SSL_CTRL_MODE: 1196 return (ctx->internal->mode|=larg); 1197 case SSL_CTRL_CLEAR_MODE: 1198 return (ctx->internal->mode&=~larg); 1199 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1200 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1201 return (0); 1202 ctx->internal->max_send_fragment = larg; 1203 return (1); 1204 default: 1205 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1206 } 1207 } 1208 1209 long 1210 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1211 { 1212 switch (cmd) { 1213 case SSL_CTRL_SET_MSG_CALLBACK: 1214 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1215 int content_type, const void *buf, size_t len, SSL *ssl, 1216 void *arg))(fp); 1217 return (1); 1218 1219 default: 1220 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1221 } 1222 } 1223 1224 int 1225 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1226 { 1227 long l; 1228 1229 l = a->id - b->id; 1230 if (l == 0L) 1231 return (0); 1232 else 1233 return ((l > 0) ? 1:-1); 1234 } 1235 1236 int 1237 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1238 const SSL_CIPHER * const *bp) 1239 { 1240 long l; 1241 1242 l = (*ap)->id - (*bp)->id; 1243 if (l == 0L) 1244 return (0); 1245 else 1246 return ((l > 0) ? 1:-1); 1247 } 1248 1249 /* 1250 * Return a STACK of the ciphers available for the SSL and in order of 1251 * preference. 1252 */ 1253 STACK_OF(SSL_CIPHER) * 1254 SSL_get_ciphers(const SSL *s) 1255 { 1256 if (s != NULL) { 1257 if (s->cipher_list != NULL) { 1258 return (s->cipher_list); 1259 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1260 return (s->ctx->cipher_list); 1261 } 1262 } 1263 return (NULL); 1264 } 1265 1266 /* 1267 * Return a STACK of the ciphers available for the SSL and in order of 1268 * algorithm id. 1269 */ 1270 STACK_OF(SSL_CIPHER) * 1271 ssl_get_ciphers_by_id(SSL *s) 1272 { 1273 if (s != NULL) { 1274 if (s->internal->cipher_list_by_id != NULL) { 1275 return (s->internal->cipher_list_by_id); 1276 } else if ((s->ctx != NULL) && 1277 (s->ctx->internal->cipher_list_by_id != NULL)) { 1278 return (s->ctx->internal->cipher_list_by_id); 1279 } 1280 } 1281 return (NULL); 1282 } 1283 1284 /* See if we have any ECC cipher suites. */ 1285 int 1286 ssl_has_ecc_ciphers(SSL *s) 1287 { 1288 STACK_OF(SSL_CIPHER) *ciphers; 1289 unsigned long alg_k, alg_a; 1290 SSL_CIPHER *cipher; 1291 int i; 1292 1293 if (s->version == DTLS1_VERSION) 1294 return 0; 1295 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1296 return 0; 1297 1298 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1299 cipher = sk_SSL_CIPHER_value(ciphers, i); 1300 1301 alg_k = cipher->algorithm_mkey; 1302 alg_a = cipher->algorithm_auth; 1303 1304 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1305 return 1; 1306 } 1307 1308 return 0; 1309 } 1310 1311 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1312 const char * 1313 SSL_get_cipher_list(const SSL *s, int n) 1314 { 1315 SSL_CIPHER *c; 1316 STACK_OF(SSL_CIPHER) *sk; 1317 1318 if (s == NULL) 1319 return (NULL); 1320 sk = SSL_get_ciphers(s); 1321 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1322 return (NULL); 1323 c = sk_SSL_CIPHER_value(sk, n); 1324 if (c == NULL) 1325 return (NULL); 1326 return (c->name); 1327 } 1328 1329 STACK_OF(SSL_CIPHER) * 1330 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1331 { 1332 return ctx->cipher_list; 1333 } 1334 1335 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1336 int 1337 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1338 { 1339 STACK_OF(SSL_CIPHER) *sk; 1340 1341 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1342 &ctx->internal->cipher_list_by_id, str); 1343 /* 1344 * ssl_create_cipher_list may return an empty stack if it 1345 * was unable to find a cipher matching the given rule string 1346 * (for example if the rule string specifies a cipher which 1347 * has been disabled). This is not an error as far as 1348 * ssl_create_cipher_list is concerned, and hence 1349 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1350 * updated. 1351 */ 1352 if (sk == NULL) 1353 return (0); 1354 else if (sk_SSL_CIPHER_num(sk) == 0) { 1355 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1356 return (0); 1357 } 1358 return (1); 1359 } 1360 1361 /* Specify the ciphers to be used by the SSL. */ 1362 int 1363 SSL_set_cipher_list(SSL *s, const char *str) 1364 { 1365 STACK_OF(SSL_CIPHER) *sk; 1366 1367 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1368 &s->internal->cipher_list_by_id, str); 1369 /* see comment in SSL_CTX_set_cipher_list */ 1370 if (sk == NULL) 1371 return (0); 1372 else if (sk_SSL_CIPHER_num(sk) == 0) { 1373 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1374 return (0); 1375 } 1376 return (1); 1377 } 1378 1379 /* works well for SSLv2, not so good for SSLv3 */ 1380 char * 1381 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1382 { 1383 char *end; 1384 STACK_OF(SSL_CIPHER) *sk; 1385 SSL_CIPHER *c; 1386 size_t curlen = 0; 1387 int i; 1388 1389 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1390 return (NULL); 1391 1392 sk = s->session->ciphers; 1393 if (sk_SSL_CIPHER_num(sk) == 0) 1394 return (NULL); 1395 1396 buf[0] = '\0'; 1397 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1398 c = sk_SSL_CIPHER_value(sk, i); 1399 end = buf + curlen; 1400 if (strlcat(buf, c->name, len) >= len || 1401 (curlen = strlcat(buf, ":", len)) >= len) { 1402 /* remove truncated cipher from list */ 1403 *end = '\0'; 1404 break; 1405 } 1406 } 1407 /* remove trailing colon */ 1408 if ((end = strrchr(buf, ':')) != NULL) 1409 *end = '\0'; 1410 return (buf); 1411 } 1412 1413 int 1414 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1415 { 1416 SSL_CIPHER *cipher; 1417 int num_ciphers = 0; 1418 int i; 1419 1420 if (ciphers == NULL) 1421 return 0; 1422 1423 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1424 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1425 return 0; 1426 1427 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1428 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1429 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1430 continue; 1431 1432 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1433 return 0; 1434 1435 num_ciphers++; 1436 } 1437 1438 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1439 if (num_ciphers > 0 && !s->internal->renegotiate) { 1440 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1441 return 0; 1442 } 1443 1444 if (!CBB_flush(cbb)) 1445 return 0; 1446 1447 return 1; 1448 } 1449 1450 STACK_OF(SSL_CIPHER) * 1451 ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1452 { 1453 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1454 const SSL_CIPHER *cipher; 1455 uint16_t cipher_value, max_version; 1456 unsigned long cipher_id; 1457 1458 if (s->s3 != NULL) 1459 S3I(s)->send_connection_binding = 0; 1460 1461 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1462 SSLerror(s, ERR_R_MALLOC_FAILURE); 1463 goto err; 1464 } 1465 1466 while (CBS_len(cbs) > 0) { 1467 if (!CBS_get_u16(cbs, &cipher_value)) { 1468 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1469 goto err; 1470 } 1471 1472 cipher_id = SSL3_CK_ID | cipher_value; 1473 1474 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1475 /* 1476 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1477 * renegotiating. 1478 */ 1479 if (s->internal->renegotiate) { 1480 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1481 ssl3_send_alert(s, SSL3_AL_FATAL, 1482 SSL_AD_HANDSHAKE_FAILURE); 1483 1484 goto err; 1485 } 1486 S3I(s)->send_connection_binding = 1; 1487 continue; 1488 } 1489 1490 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1491 /* 1492 * TLS_FALLBACK_SCSV indicates that the client 1493 * previously tried a higher protocol version. 1494 * Fail if the current version is an unexpected 1495 * downgrade. 1496 */ 1497 max_version = ssl_max_server_version(s); 1498 if (max_version == 0 || s->version < max_version) { 1499 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1500 if (s->s3 != NULL) 1501 ssl3_send_alert(s, SSL3_AL_FATAL, 1502 SSL_AD_INAPPROPRIATE_FALLBACK); 1503 goto err; 1504 } 1505 continue; 1506 } 1507 1508 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1509 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1510 SSLerror(s, ERR_R_MALLOC_FAILURE); 1511 goto err; 1512 } 1513 } 1514 } 1515 1516 return (ciphers); 1517 1518 err: 1519 sk_SSL_CIPHER_free(ciphers); 1520 1521 return (NULL); 1522 } 1523 1524 1525 /* 1526 * Return a servername extension value if provided in Client Hello, or NULL. 1527 * So far, only host_name types are defined (RFC 3546). 1528 */ 1529 const char * 1530 SSL_get_servername(const SSL *s, const int type) 1531 { 1532 if (type != TLSEXT_NAMETYPE_host_name) 1533 return (NULL); 1534 1535 return (s->session && !s->tlsext_hostname ? 1536 s->session->tlsext_hostname : 1537 s->tlsext_hostname); 1538 } 1539 1540 int 1541 SSL_get_servername_type(const SSL *s) 1542 { 1543 if (s->session && 1544 (!s->tlsext_hostname ? 1545 s->session->tlsext_hostname : s->tlsext_hostname)) 1546 return (TLSEXT_NAMETYPE_host_name); 1547 return (-1); 1548 } 1549 1550 /* 1551 * SSL_select_next_proto implements standard protocol selection. It is 1552 * expected that this function is called from the callback set by 1553 * SSL_CTX_set_alpn_select_cb. 1554 * 1555 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1556 * strings. The length byte itself is not included in the length. A byte 1557 * string of length 0 is invalid. No byte string may be truncated. 1558 * 1559 * It returns either: 1560 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1561 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1562 */ 1563 int 1564 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1565 const unsigned char *server, unsigned int server_len, 1566 const unsigned char *client, unsigned int client_len) 1567 { 1568 unsigned int i, j; 1569 const unsigned char *result; 1570 int status = OPENSSL_NPN_UNSUPPORTED; 1571 1572 /* 1573 * For each protocol in server preference order, 1574 * see if we support it. 1575 */ 1576 for (i = 0; i < server_len; ) { 1577 for (j = 0; j < client_len; ) { 1578 if (server[i] == client[j] && 1579 memcmp(&server[i + 1], 1580 &client[j + 1], server[i]) == 0) { 1581 /* We found a match */ 1582 result = &server[i]; 1583 status = OPENSSL_NPN_NEGOTIATED; 1584 goto found; 1585 } 1586 j += client[j]; 1587 j++; 1588 } 1589 i += server[i]; 1590 i++; 1591 } 1592 1593 /* There's no overlap between our protocols and the server's list. */ 1594 result = client; 1595 status = OPENSSL_NPN_NO_OVERLAP; 1596 1597 found: 1598 *out = (unsigned char *) result + 1; 1599 *outlen = result[0]; 1600 return (status); 1601 } 1602 1603 /* SSL_get0_next_proto_negotiated is deprecated. */ 1604 void 1605 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1606 unsigned *len) 1607 { 1608 *data = NULL; 1609 *len = 0; 1610 } 1611 1612 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1613 void 1614 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1615 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1616 { 1617 } 1618 1619 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1620 void 1621 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1622 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1623 unsigned int inlen, void *arg), void *arg) 1624 { 1625 } 1626 1627 /* 1628 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1629 * protocols, which must be in wire-format (i.e. a series of non-empty, 1630 * 8-bit length-prefixed strings). Returns 0 on success. 1631 */ 1632 int 1633 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1634 unsigned int protos_len) 1635 { 1636 int failed = 1; 1637 1638 if (protos == NULL || protos_len == 0) 1639 goto err; 1640 1641 free(ctx->internal->alpn_client_proto_list); 1642 ctx->internal->alpn_client_proto_list = NULL; 1643 ctx->internal->alpn_client_proto_list_len = 0; 1644 1645 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1646 == NULL) 1647 goto err; 1648 ctx->internal->alpn_client_proto_list_len = protos_len; 1649 1650 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1651 1652 failed = 0; 1653 1654 err: 1655 /* NOTE: Return values are the reverse of what you expect. */ 1656 return (failed); 1657 } 1658 1659 /* 1660 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1661 * protocols, which must be in wire-format (i.e. a series of non-empty, 1662 * 8-bit length-prefixed strings). Returns 0 on success. 1663 */ 1664 int 1665 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1666 unsigned int protos_len) 1667 { 1668 int failed = 1; 1669 1670 if (protos == NULL || protos_len == 0) 1671 goto err; 1672 1673 free(ssl->internal->alpn_client_proto_list); 1674 ssl->internal->alpn_client_proto_list = NULL; 1675 ssl->internal->alpn_client_proto_list_len = 0; 1676 1677 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1678 == NULL) 1679 goto err; 1680 ssl->internal->alpn_client_proto_list_len = protos_len; 1681 1682 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1683 1684 failed = 0; 1685 1686 err: 1687 /* NOTE: Return values are the reverse of what you expect. */ 1688 return (failed); 1689 } 1690 1691 /* 1692 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1693 * ClientHello processing in order to select an ALPN protocol from the 1694 * client's list of offered protocols. 1695 */ 1696 void 1697 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1698 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1699 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1700 { 1701 ctx->internal->alpn_select_cb = cb; 1702 ctx->internal->alpn_select_cb_arg = arg; 1703 } 1704 1705 /* 1706 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1707 * it sets data to point to len bytes of protocol name (not including the 1708 * leading length-prefix byte). If the server didn't respond with* a negotiated 1709 * protocol then len will be zero. 1710 */ 1711 void 1712 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1713 unsigned *len) 1714 { 1715 *data = NULL; 1716 *len = 0; 1717 1718 if (ssl->s3 != NULL) { 1719 *data = ssl->s3->internal->alpn_selected; 1720 *len = ssl->s3->internal->alpn_selected_len; 1721 } 1722 } 1723 1724 int 1725 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1726 const char *label, size_t llen, const unsigned char *p, size_t plen, 1727 int use_context) 1728 { 1729 return (tls1_export_keying_material(s, out, olen, 1730 label, llen, p, plen, use_context)); 1731 } 1732 1733 static unsigned long 1734 ssl_session_hash(const SSL_SESSION *a) 1735 { 1736 unsigned long l; 1737 1738 l = (unsigned long) 1739 ((unsigned int) a->session_id[0] )| 1740 ((unsigned int) a->session_id[1]<< 8L)| 1741 ((unsigned long)a->session_id[2]<<16L)| 1742 ((unsigned long)a->session_id[3]<<24L); 1743 return (l); 1744 } 1745 1746 /* 1747 * NB: If this function (or indeed the hash function which uses a sort of 1748 * coarser function than this one) is changed, ensure 1749 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1750 * able to construct an SSL_SESSION that will collide with any existing session 1751 * with a matching session ID. 1752 */ 1753 static int 1754 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1755 { 1756 if (a->ssl_version != b->ssl_version) 1757 return (1); 1758 if (a->session_id_length != b->session_id_length) 1759 return (1); 1760 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1761 return (1); 1762 return (0); 1763 } 1764 1765 /* 1766 * These wrapper functions should remain rather than redeclaring 1767 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1768 * variable. The reason is that the functions aren't static, they're exposed via 1769 * ssl.h. 1770 */ 1771 static unsigned long 1772 ssl_session_LHASH_HASH(const void *arg) 1773 { 1774 const SSL_SESSION *a = arg; 1775 1776 return ssl_session_hash(a); 1777 } 1778 1779 static int 1780 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1781 { 1782 const SSL_SESSION *a = arg1; 1783 const SSL_SESSION *b = arg2; 1784 1785 return ssl_session_cmp(a, b); 1786 } 1787 1788 SSL_CTX * 1789 SSL_CTX_new(const SSL_METHOD *meth) 1790 { 1791 SSL_CTX *ret; 1792 1793 if (!OPENSSL_init_ssl(0, NULL)) { 1794 SSLerrorx(SSL_R_LIBRARY_BUG); 1795 return (NULL); 1796 } 1797 1798 if (meth == NULL) { 1799 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1800 return (NULL); 1801 } 1802 1803 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1804 SSLerrorx(ERR_R_MALLOC_FAILURE); 1805 return (NULL); 1806 } 1807 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1808 free(ret); 1809 SSLerrorx(ERR_R_MALLOC_FAILURE); 1810 return (NULL); 1811 } 1812 1813 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1814 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1815 goto err; 1816 } 1817 1818 ret->method = meth; 1819 ret->internal->min_version = meth->internal->min_version; 1820 ret->internal->max_version = meth->internal->max_version; 1821 1822 ret->cert_store = NULL; 1823 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1824 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1825 ret->internal->session_cache_head = NULL; 1826 ret->internal->session_cache_tail = NULL; 1827 1828 /* We take the system default */ 1829 ret->session_timeout = meth->internal->get_timeout(); 1830 1831 ret->internal->new_session_cb = 0; 1832 ret->internal->remove_session_cb = 0; 1833 ret->internal->get_session_cb = 0; 1834 ret->internal->generate_session_id = 0; 1835 1836 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1837 1838 ret->references = 1; 1839 ret->internal->quiet_shutdown = 0; 1840 1841 ret->internal->info_callback = NULL; 1842 1843 ret->internal->app_verify_callback = 0; 1844 ret->internal->app_verify_arg = NULL; 1845 1846 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1847 ret->internal->read_ahead = 0; 1848 ret->internal->msg_callback = 0; 1849 ret->internal->msg_callback_arg = NULL; 1850 ret->verify_mode = SSL_VERIFY_NONE; 1851 ret->sid_ctx_length = 0; 1852 ret->internal->default_verify_callback = NULL; 1853 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1854 goto err; 1855 1856 ret->default_passwd_callback = 0; 1857 ret->default_passwd_callback_userdata = NULL; 1858 ret->internal->client_cert_cb = 0; 1859 ret->internal->app_gen_cookie_cb = 0; 1860 ret->internal->app_verify_cookie_cb = 0; 1861 1862 ret->internal->sessions = lh_SSL_SESSION_new(); 1863 if (ret->internal->sessions == NULL) 1864 goto err; 1865 ret->cert_store = X509_STORE_new(); 1866 if (ret->cert_store == NULL) 1867 goto err; 1868 1869 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1870 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1871 if (ret->cipher_list == NULL || 1872 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1873 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1874 goto err2; 1875 } 1876 1877 ret->param = X509_VERIFY_PARAM_new(); 1878 if (!ret->param) 1879 goto err; 1880 1881 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1882 goto err; 1883 1884 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1885 1886 ret->extra_certs = NULL; 1887 1888 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1889 1890 ret->internal->tlsext_servername_callback = 0; 1891 ret->internal->tlsext_servername_arg = NULL; 1892 1893 /* Setup RFC4507 ticket keys */ 1894 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1895 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1896 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1897 1898 ret->internal->tlsext_status_cb = 0; 1899 ret->internal->tlsext_status_arg = NULL; 1900 1901 #ifndef OPENSSL_NO_ENGINE 1902 ret->internal->client_cert_engine = NULL; 1903 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1904 #define eng_strx(x) #x 1905 #define eng_str(x) eng_strx(x) 1906 /* Use specific client engine automatically... ignore errors */ 1907 { 1908 ENGINE *eng; 1909 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1910 if (!eng) { 1911 ERR_clear_error(); 1912 ENGINE_load_builtin_engines(); 1913 eng = ENGINE_by_id(eng_str( 1914 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1915 } 1916 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1917 ERR_clear_error(); 1918 } 1919 #endif 1920 #endif 1921 /* 1922 * Default is to connect to non-RI servers. When RI is more widely 1923 * deployed might change this. 1924 */ 1925 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1926 1927 return (ret); 1928 err: 1929 SSLerrorx(ERR_R_MALLOC_FAILURE); 1930 err2: 1931 SSL_CTX_free(ret); 1932 return (NULL); 1933 } 1934 1935 void 1936 SSL_CTX_free(SSL_CTX *ctx) 1937 { 1938 int i; 1939 1940 if (ctx == NULL) 1941 return; 1942 1943 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1944 if (i > 0) 1945 return; 1946 1947 X509_VERIFY_PARAM_free(ctx->param); 1948 1949 /* 1950 * Free internal session cache. However: the remove_cb() may reference 1951 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1952 * after the sessions were flushed. 1953 * As the ex_data handling routines might also touch the session cache, 1954 * the most secure solution seems to be: empty (flush) the cache, then 1955 * free ex_data, then finally free the cache. 1956 * (See ticket [openssl.org #212].) 1957 */ 1958 if (ctx->internal->sessions != NULL) 1959 SSL_CTX_flush_sessions(ctx, 0); 1960 1961 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1962 1963 lh_SSL_SESSION_free(ctx->internal->sessions); 1964 1965 X509_STORE_free(ctx->cert_store); 1966 sk_SSL_CIPHER_free(ctx->cipher_list); 1967 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1968 ssl_cert_free(ctx->internal->cert); 1969 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1970 sk_X509_pop_free(ctx->extra_certs, X509_free); 1971 1972 #ifndef OPENSSL_NO_SRTP 1973 if (ctx->internal->srtp_profiles) 1974 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1975 #endif 1976 1977 #ifndef OPENSSL_NO_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 int 1991 SSL_CTX_up_ref(SSL_CTX *ctx) 1992 { 1993 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1994 return ((refs > 1) ? 1 : 0); 1995 } 1996 1997 pem_password_cb * 1998 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1999 { 2000 return (ctx->default_passwd_callback); 2001 } 2002 2003 void 2004 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2005 { 2006 ctx->default_passwd_callback = cb; 2007 } 2008 2009 void * 2010 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2011 { 2012 return ctx->default_passwd_callback_userdata; 2013 } 2014 2015 void 2016 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2017 { 2018 ctx->default_passwd_callback_userdata = u; 2019 } 2020 2021 void 2022 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2023 void *), void *arg) 2024 { 2025 ctx->internal->app_verify_callback = cb; 2026 ctx->internal->app_verify_arg = arg; 2027 } 2028 2029 void 2030 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2031 { 2032 ctx->verify_mode = mode; 2033 ctx->internal->default_verify_callback = cb; 2034 } 2035 2036 void 2037 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2038 { 2039 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2040 } 2041 2042 void 2043 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2044 { 2045 int rsa_enc, rsa_sign, dh_tmp; 2046 int have_ecc_cert; 2047 unsigned long mask_k, mask_a; 2048 X509 *x = NULL; 2049 CERT_PKEY *cpk; 2050 2051 if (c == NULL) 2052 return; 2053 2054 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2055 c->dh_tmp_auto != 0); 2056 2057 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2058 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2059 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2060 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2061 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2062 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2063 2064 mask_k = 0; 2065 mask_a = 0; 2066 2067 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2068 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2069 mask_k |= SSL_kGOST; 2070 mask_a |= SSL_aGOST01; 2071 } 2072 2073 if (rsa_enc) 2074 mask_k |= SSL_kRSA; 2075 2076 if (dh_tmp) 2077 mask_k |= SSL_kDHE; 2078 2079 if (rsa_enc || rsa_sign) 2080 mask_a |= SSL_aRSA; 2081 2082 mask_a |= SSL_aNULL; 2083 2084 /* 2085 * An ECC certificate may be usable for ECDH and/or 2086 * ECDSA cipher suites depending on the key usage extension. 2087 */ 2088 if (have_ecc_cert) { 2089 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2090 2091 /* This call populates extension flags (ex_flags). */ 2092 X509_check_purpose(x, -1, 0); 2093 2094 /* Key usage, if present, must allow signing. */ 2095 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2096 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2097 mask_a |= SSL_aECDSA; 2098 } 2099 2100 mask_k |= SSL_kECDHE; 2101 2102 c->mask_k = mask_k; 2103 c->mask_a = mask_a; 2104 c->valid = 1; 2105 } 2106 2107 /* See if this handshake is using an ECC cipher suite. */ 2108 int 2109 ssl_using_ecc_cipher(SSL *s) 2110 { 2111 unsigned long alg_a, alg_k; 2112 2113 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2114 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2115 2116 return SSI(s)->tlsext_ecpointformatlist != NULL && 2117 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2118 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2119 } 2120 2121 int 2122 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2123 { 2124 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2125 unsigned long alg_a; 2126 2127 alg_a = cs->algorithm_auth; 2128 2129 if (alg_a & SSL_aECDSA) { 2130 /* This call populates extension flags (ex_flags). */ 2131 X509_check_purpose(x, -1, 0); 2132 2133 /* Key usage, if present, must allow signing. */ 2134 if ((x->ex_flags & EXFLAG_KUSAGE) && 2135 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2136 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2137 return (0); 2138 } 2139 } 2140 2141 return (1); 2142 } 2143 2144 CERT_PKEY * 2145 ssl_get_server_send_pkey(const SSL *s) 2146 { 2147 unsigned long alg_a; 2148 CERT *c; 2149 int i; 2150 2151 c = s->cert; 2152 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2153 2154 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2155 2156 if (alg_a & SSL_aECDSA) { 2157 i = SSL_PKEY_ECC; 2158 } else if (alg_a & SSL_aRSA) { 2159 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2160 i = SSL_PKEY_RSA_SIGN; 2161 else 2162 i = SSL_PKEY_RSA_ENC; 2163 } else if (alg_a & SSL_aGOST01) { 2164 i = SSL_PKEY_GOST01; 2165 } else { /* if (alg_a & SSL_aNULL) */ 2166 SSLerror(s, ERR_R_INTERNAL_ERROR); 2167 return (NULL); 2168 } 2169 2170 return (c->pkeys + i); 2171 } 2172 2173 X509 * 2174 ssl_get_server_send_cert(const SSL *s) 2175 { 2176 CERT_PKEY *cpk; 2177 2178 cpk = ssl_get_server_send_pkey(s); 2179 if (!cpk) 2180 return (NULL); 2181 return (cpk->x509); 2182 } 2183 2184 EVP_PKEY * 2185 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2186 { 2187 unsigned long alg_a; 2188 CERT *c; 2189 int idx = -1; 2190 2191 alg_a = cipher->algorithm_auth; 2192 c = s->cert; 2193 2194 if (alg_a & SSL_aRSA) { 2195 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2196 idx = SSL_PKEY_RSA_SIGN; 2197 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2198 idx = SSL_PKEY_RSA_ENC; 2199 } else if ((alg_a & SSL_aECDSA) && 2200 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2201 idx = SSL_PKEY_ECC; 2202 if (idx == -1) { 2203 SSLerror(s, ERR_R_INTERNAL_ERROR); 2204 return (NULL); 2205 } 2206 if (pmd) 2207 *pmd = c->pkeys[idx].digest; 2208 return (c->pkeys[idx].privatekey); 2209 } 2210 2211 DH * 2212 ssl_get_auto_dh(SSL *s) 2213 { 2214 CERT_PKEY *cpk; 2215 int keylen; 2216 DH *dhp; 2217 2218 if (s->cert->dh_tmp_auto == 2) { 2219 keylen = 1024; 2220 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2221 keylen = 1024; 2222 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2223 keylen = 3072; 2224 } else { 2225 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2226 return (NULL); 2227 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2228 return (NULL); 2229 keylen = EVP_PKEY_bits(cpk->privatekey); 2230 } 2231 2232 if ((dhp = DH_new()) == NULL) 2233 return (NULL); 2234 2235 dhp->g = BN_new(); 2236 if (dhp->g != NULL) 2237 BN_set_word(dhp->g, 2); 2238 2239 if (keylen >= 8192) 2240 dhp->p = get_rfc3526_prime_8192(NULL); 2241 else if (keylen >= 4096) 2242 dhp->p = get_rfc3526_prime_4096(NULL); 2243 else if (keylen >= 3072) 2244 dhp->p = get_rfc3526_prime_3072(NULL); 2245 else if (keylen >= 2048) 2246 dhp->p = get_rfc3526_prime_2048(NULL); 2247 else if (keylen >= 1536) 2248 dhp->p = get_rfc3526_prime_1536(NULL); 2249 else 2250 dhp->p = get_rfc2409_prime_1024(NULL); 2251 2252 if (dhp->p == NULL || dhp->g == NULL) { 2253 DH_free(dhp); 2254 return (NULL); 2255 } 2256 return (dhp); 2257 } 2258 2259 void 2260 ssl_update_cache(SSL *s, int mode) 2261 { 2262 int i; 2263 2264 /* 2265 * If the session_id_length is 0, we are not supposed to cache it, 2266 * and it would be rather hard to do anyway :-) 2267 */ 2268 if (s->session->session_id_length == 0) 2269 return; 2270 2271 i = s->session_ctx->internal->session_cache_mode; 2272 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2273 || SSL_CTX_add_session(s->session_ctx, s->session)) 2274 && (s->session_ctx->internal->new_session_cb != NULL)) { 2275 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2276 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2277 SSL_SESSION_free(s->session); 2278 } 2279 2280 /* auto flush every 255 connections */ 2281 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2282 ((i & mode) == mode)) { 2283 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2284 s->session_ctx->internal->stats.sess_connect_good : 2285 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2286 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2287 } 2288 } 2289 } 2290 2291 const SSL_METHOD * 2292 SSL_get_ssl_method(SSL *s) 2293 { 2294 return (s->method); 2295 } 2296 2297 int 2298 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2299 { 2300 int conn = -1; 2301 int ret = 1; 2302 2303 if (s->method != meth) { 2304 if (s->internal->handshake_func != NULL) 2305 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2306 2307 if (s->method->internal->version == meth->internal->version) 2308 s->method = meth; 2309 else { 2310 s->method->internal->ssl_free(s); 2311 s->method = meth; 2312 ret = s->method->internal->ssl_new(s); 2313 } 2314 2315 if (conn == 1) 2316 s->internal->handshake_func = meth->internal->ssl_connect; 2317 else if (conn == 0) 2318 s->internal->handshake_func = meth->internal->ssl_accept; 2319 } 2320 return (ret); 2321 } 2322 2323 int 2324 SSL_get_error(const SSL *s, int i) 2325 { 2326 int reason; 2327 unsigned long l; 2328 BIO *bio; 2329 2330 if (i > 0) 2331 return (SSL_ERROR_NONE); 2332 2333 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2334 * etc, where we do encode the error */ 2335 if ((l = ERR_peek_error()) != 0) { 2336 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2337 return (SSL_ERROR_SYSCALL); 2338 else 2339 return (SSL_ERROR_SSL); 2340 } 2341 2342 if ((i < 0) && SSL_want_read(s)) { 2343 bio = SSL_get_rbio(s); 2344 if (BIO_should_read(bio)) { 2345 return (SSL_ERROR_WANT_READ); 2346 } else if (BIO_should_write(bio)) { 2347 /* 2348 * This one doesn't make too much sense... We never 2349 * try to write to the rbio, and an application 2350 * program where rbio and wbio are separate couldn't 2351 * even know what it should wait for. However if we 2352 * ever set s->internal->rwstate incorrectly (so that we have 2353 * SSL_want_read(s) instead of SSL_want_write(s)) 2354 * and rbio and wbio *are* the same, this test works 2355 * around that bug; so it might be safer to keep it. 2356 */ 2357 return (SSL_ERROR_WANT_WRITE); 2358 } else if (BIO_should_io_special(bio)) { 2359 reason = BIO_get_retry_reason(bio); 2360 if (reason == BIO_RR_CONNECT) 2361 return (SSL_ERROR_WANT_CONNECT); 2362 else if (reason == BIO_RR_ACCEPT) 2363 return (SSL_ERROR_WANT_ACCEPT); 2364 else 2365 return (SSL_ERROR_SYSCALL); /* unknown */ 2366 } 2367 } 2368 2369 if ((i < 0) && SSL_want_write(s)) { 2370 bio = SSL_get_wbio(s); 2371 if (BIO_should_write(bio)) { 2372 return (SSL_ERROR_WANT_WRITE); 2373 } else if (BIO_should_read(bio)) { 2374 /* 2375 * See above (SSL_want_read(s) with 2376 * BIO_should_write(bio)) 2377 */ 2378 return (SSL_ERROR_WANT_READ); 2379 } else if (BIO_should_io_special(bio)) { 2380 reason = BIO_get_retry_reason(bio); 2381 if (reason == BIO_RR_CONNECT) 2382 return (SSL_ERROR_WANT_CONNECT); 2383 else if (reason == BIO_RR_ACCEPT) 2384 return (SSL_ERROR_WANT_ACCEPT); 2385 else 2386 return (SSL_ERROR_SYSCALL); 2387 } 2388 } 2389 if ((i < 0) && SSL_want_x509_lookup(s)) { 2390 return (SSL_ERROR_WANT_X509_LOOKUP); 2391 } 2392 2393 if (i == 0) { 2394 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2395 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2396 return (SSL_ERROR_ZERO_RETURN); 2397 } 2398 return (SSL_ERROR_SYSCALL); 2399 } 2400 2401 int 2402 SSL_do_handshake(SSL *s) 2403 { 2404 int ret = 1; 2405 2406 if (s->internal->handshake_func == NULL) { 2407 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2408 return (-1); 2409 } 2410 2411 s->method->internal->ssl_renegotiate_check(s); 2412 2413 if (SSL_in_init(s) || SSL_in_before(s)) { 2414 ret = s->internal->handshake_func(s); 2415 } 2416 return (ret); 2417 } 2418 2419 /* 2420 * For the next 2 functions, SSL_clear() sets shutdown and so 2421 * one of these calls will reset it 2422 */ 2423 void 2424 SSL_set_accept_state(SSL *s) 2425 { 2426 s->server = 1; 2427 s->internal->shutdown = 0; 2428 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2429 s->internal->handshake_func = s->method->internal->ssl_accept; 2430 ssl_clear_cipher_state(s); 2431 } 2432 2433 void 2434 SSL_set_connect_state(SSL *s) 2435 { 2436 s->server = 0; 2437 s->internal->shutdown = 0; 2438 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2439 s->internal->handshake_func = s->method->internal->ssl_connect; 2440 ssl_clear_cipher_state(s); 2441 } 2442 2443 int 2444 ssl_undefined_function(SSL *s) 2445 { 2446 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2447 return (0); 2448 } 2449 2450 int 2451 ssl_undefined_void_function(void) 2452 { 2453 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2454 return (0); 2455 } 2456 2457 int 2458 ssl_undefined_const_function(const SSL *s) 2459 { 2460 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2461 return (0); 2462 } 2463 2464 const char * 2465 ssl_version_string(int ver) 2466 { 2467 switch (ver) { 2468 case DTLS1_VERSION: 2469 return (SSL_TXT_DTLS1); 2470 case TLS1_VERSION: 2471 return (SSL_TXT_TLSV1); 2472 case TLS1_1_VERSION: 2473 return (SSL_TXT_TLSV1_1); 2474 case TLS1_2_VERSION: 2475 return (SSL_TXT_TLSV1_2); 2476 default: 2477 return ("unknown"); 2478 } 2479 } 2480 2481 const char * 2482 SSL_get_version(const SSL *s) 2483 { 2484 return ssl_version_string(s->version); 2485 } 2486 2487 SSL * 2488 SSL_dup(SSL *s) 2489 { 2490 STACK_OF(X509_NAME) *sk; 2491 X509_NAME *xn; 2492 SSL *ret; 2493 int i; 2494 2495 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2496 goto err; 2497 2498 ret->version = s->version; 2499 ret->internal->type = s->internal->type; 2500 ret->method = s->method; 2501 2502 if (s->session != NULL) { 2503 if (!SSL_copy_session_id(ret, s)) 2504 goto err; 2505 } else { 2506 /* 2507 * No session has been established yet, so we have to expect 2508 * that s->cert or ret->cert will be changed later -- 2509 * they should not both point to the same object, 2510 * and thus we can't use SSL_copy_session_id. 2511 */ 2512 2513 ret->method->internal->ssl_free(ret); 2514 ret->method = s->method; 2515 ret->method->internal->ssl_new(ret); 2516 2517 if (s->cert != NULL) { 2518 ssl_cert_free(ret->cert); 2519 ret->cert = ssl_cert_dup(s->cert); 2520 if (ret->cert == NULL) 2521 goto err; 2522 } 2523 2524 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2525 s->sid_ctx_length)) 2526 goto err; 2527 } 2528 2529 ret->internal->options = s->internal->options; 2530 ret->internal->mode = s->internal->mode; 2531 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2532 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2533 ret->internal->msg_callback = s->internal->msg_callback; 2534 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2535 SSL_set_verify(ret, SSL_get_verify_mode(s), 2536 SSL_get_verify_callback(s)); 2537 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2538 ret->internal->generate_session_id = s->internal->generate_session_id; 2539 2540 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2541 2542 ret->internal->debug = s->internal->debug; 2543 2544 /* copy app data, a little dangerous perhaps */ 2545 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2546 &ret->internal->ex_data, &s->internal->ex_data)) 2547 goto err; 2548 2549 /* setup rbio, and wbio */ 2550 if (s->rbio != NULL) { 2551 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2552 goto err; 2553 } 2554 if (s->wbio != NULL) { 2555 if (s->wbio != s->rbio) { 2556 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2557 goto err; 2558 } else 2559 ret->wbio = ret->rbio; 2560 } 2561 ret->internal->rwstate = s->internal->rwstate; 2562 ret->internal->in_handshake = s->internal->in_handshake; 2563 ret->internal->handshake_func = s->internal->handshake_func; 2564 ret->server = s->server; 2565 ret->internal->renegotiate = s->internal->renegotiate; 2566 ret->internal->new_session = s->internal->new_session; 2567 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2568 ret->internal->shutdown = s->internal->shutdown; 2569 /* SSL_dup does not really work at any state, though */ 2570 S3I(ret)->hs.state = S3I(s)->hs.state; 2571 ret->internal->rstate = s->internal->rstate; 2572 2573 /* 2574 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2575 * ret->init_off 2576 */ 2577 ret->internal->init_num = 0; 2578 2579 ret->internal->hit = s->internal->hit; 2580 2581 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2582 2583 /* dup the cipher_list and cipher_list_by_id stacks */ 2584 if (s->cipher_list != NULL) { 2585 if ((ret->cipher_list = 2586 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2587 goto err; 2588 } 2589 if (s->internal->cipher_list_by_id != NULL) { 2590 if ((ret->internal->cipher_list_by_id = 2591 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2592 goto err; 2593 } 2594 2595 /* Dup the client_CA list */ 2596 if (s->internal->client_CA != NULL) { 2597 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2598 ret->internal->client_CA = sk; 2599 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2600 xn = sk_X509_NAME_value(sk, i); 2601 if (sk_X509_NAME_set(sk, i, 2602 X509_NAME_dup(xn)) == NULL) { 2603 X509_NAME_free(xn); 2604 goto err; 2605 } 2606 } 2607 } 2608 2609 return ret; 2610 err: 2611 SSL_free(ret); 2612 return NULL; 2613 } 2614 2615 void 2616 ssl_clear_cipher_state(SSL *s) 2617 { 2618 ssl_clear_cipher_read_state(s); 2619 ssl_clear_cipher_write_state(s); 2620 } 2621 2622 void 2623 ssl_clear_cipher_read_state(SSL *s) 2624 { 2625 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2626 s->enc_read_ctx = NULL; 2627 EVP_MD_CTX_free(s->read_hash); 2628 s->read_hash = NULL; 2629 2630 if (s->internal->aead_read_ctx != NULL) { 2631 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2632 free(s->internal->aead_read_ctx); 2633 s->internal->aead_read_ctx = NULL; 2634 } 2635 } 2636 2637 void 2638 ssl_clear_cipher_write_state(SSL *s) 2639 { 2640 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2641 s->internal->enc_write_ctx = NULL; 2642 EVP_MD_CTX_free(s->internal->write_hash); 2643 s->internal->write_hash = NULL; 2644 2645 if (s->internal->aead_write_ctx != NULL) { 2646 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2647 free(s->internal->aead_write_ctx); 2648 s->internal->aead_write_ctx = NULL; 2649 } 2650 } 2651 2652 /* Fix this function so that it takes an optional type parameter */ 2653 X509 * 2654 SSL_get_certificate(const SSL *s) 2655 { 2656 if (s->cert != NULL) 2657 return (s->cert->key->x509); 2658 else 2659 return (NULL); 2660 } 2661 2662 /* Fix this function so that it takes an optional type parameter */ 2663 EVP_PKEY * 2664 SSL_get_privatekey(const SSL *s) 2665 { 2666 if (s->cert != NULL) 2667 return (s->cert->key->privatekey); 2668 else 2669 return (NULL); 2670 } 2671 2672 const SSL_CIPHER * 2673 SSL_get_current_cipher(const SSL *s) 2674 { 2675 if ((s->session != NULL) && (s->session->cipher != NULL)) 2676 return (s->session->cipher); 2677 return (NULL); 2678 } 2679 const void * 2680 SSL_get_current_compression(SSL *s) 2681 { 2682 return (NULL); 2683 } 2684 2685 const void * 2686 SSL_get_current_expansion(SSL *s) 2687 { 2688 return (NULL); 2689 } 2690 2691 size_t 2692 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2693 { 2694 size_t len = sizeof(s->s3->client_random); 2695 2696 if (out == NULL) 2697 return len; 2698 2699 if (len > max_out) 2700 len = max_out; 2701 2702 memcpy(out, s->s3->client_random, len); 2703 2704 return len; 2705 } 2706 2707 size_t 2708 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2709 { 2710 size_t len = sizeof(s->s3->server_random); 2711 2712 if (out == NULL) 2713 return len; 2714 2715 if (len > max_out) 2716 len = max_out; 2717 2718 memcpy(out, s->s3->server_random, len); 2719 2720 return len; 2721 } 2722 2723 int 2724 ssl_init_wbio_buffer(SSL *s, int push) 2725 { 2726 BIO *bbio; 2727 2728 if (s->bbio == NULL) { 2729 bbio = BIO_new(BIO_f_buffer()); 2730 if (bbio == NULL) 2731 return (0); 2732 s->bbio = bbio; 2733 } else { 2734 bbio = s->bbio; 2735 if (s->bbio == s->wbio) 2736 s->wbio = BIO_pop(s->wbio); 2737 } 2738 (void)BIO_reset(bbio); 2739 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2740 if (!BIO_set_read_buffer_size(bbio, 1)) { 2741 SSLerror(s, ERR_R_BUF_LIB); 2742 return (0); 2743 } 2744 if (push) { 2745 if (s->wbio != bbio) 2746 s->wbio = BIO_push(bbio, s->wbio); 2747 } else { 2748 if (s->wbio == bbio) 2749 s->wbio = BIO_pop(bbio); 2750 } 2751 return (1); 2752 } 2753 2754 void 2755 ssl_free_wbio_buffer(SSL *s) 2756 { 2757 if (s == NULL) 2758 return; 2759 2760 if (s->bbio == NULL) 2761 return; 2762 2763 if (s->bbio == s->wbio) { 2764 /* remove buffering */ 2765 s->wbio = BIO_pop(s->wbio); 2766 } 2767 BIO_free(s->bbio); 2768 s->bbio = NULL; 2769 } 2770 2771 void 2772 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2773 { 2774 ctx->internal->quiet_shutdown = mode; 2775 } 2776 2777 int 2778 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2779 { 2780 return (ctx->internal->quiet_shutdown); 2781 } 2782 2783 void 2784 SSL_set_quiet_shutdown(SSL *s, int mode) 2785 { 2786 s->internal->quiet_shutdown = mode; 2787 } 2788 2789 int 2790 SSL_get_quiet_shutdown(const SSL *s) 2791 { 2792 return (s->internal->quiet_shutdown); 2793 } 2794 2795 void 2796 SSL_set_shutdown(SSL *s, int mode) 2797 { 2798 s->internal->shutdown = mode; 2799 } 2800 2801 int 2802 SSL_get_shutdown(const SSL *s) 2803 { 2804 return (s->internal->shutdown); 2805 } 2806 2807 int 2808 SSL_version(const SSL *s) 2809 { 2810 return (s->version); 2811 } 2812 2813 SSL_CTX * 2814 SSL_get_SSL_CTX(const SSL *ssl) 2815 { 2816 return (ssl->ctx); 2817 } 2818 2819 SSL_CTX * 2820 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2821 { 2822 CERT *ocert = ssl->cert; 2823 2824 if (ssl->ctx == ctx) 2825 return (ssl->ctx); 2826 if (ctx == NULL) 2827 ctx = ssl->initial_ctx; 2828 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2829 if (ocert != NULL) { 2830 int i; 2831 /* Copy negotiated digests from original certificate. */ 2832 for (i = 0; i < SSL_PKEY_NUM; i++) 2833 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2834 ssl_cert_free(ocert); 2835 } 2836 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2837 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2838 ssl->ctx = ctx; 2839 return (ssl->ctx); 2840 } 2841 2842 int 2843 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2844 { 2845 return (X509_STORE_set_default_paths(ctx->cert_store)); 2846 } 2847 2848 int 2849 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2850 const char *CApath) 2851 { 2852 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2853 } 2854 2855 int 2856 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2857 { 2858 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2859 } 2860 2861 void 2862 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2863 { 2864 ssl->internal->info_callback = cb; 2865 } 2866 2867 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2868 { 2869 return (ssl->internal->info_callback); 2870 } 2871 2872 int 2873 SSL_state(const SSL *ssl) 2874 { 2875 return (S3I(ssl)->hs.state); 2876 } 2877 2878 void 2879 SSL_set_state(SSL *ssl, int state) 2880 { 2881 S3I(ssl)->hs.state = state; 2882 } 2883 2884 void 2885 SSL_set_verify_result(SSL *ssl, long arg) 2886 { 2887 ssl->verify_result = arg; 2888 } 2889 2890 long 2891 SSL_get_verify_result(const SSL *ssl) 2892 { 2893 return (ssl->verify_result); 2894 } 2895 2896 int 2897 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2898 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2899 { 2900 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2901 new_func, dup_func, free_func)); 2902 } 2903 2904 int 2905 SSL_set_ex_data(SSL *s, int idx, void *arg) 2906 { 2907 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2908 } 2909 2910 void * 2911 SSL_get_ex_data(const SSL *s, int idx) 2912 { 2913 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2914 } 2915 2916 int 2917 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2918 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2919 { 2920 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2921 new_func, dup_func, free_func)); 2922 } 2923 2924 int 2925 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2926 { 2927 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2928 } 2929 2930 void * 2931 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2932 { 2933 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2934 } 2935 2936 int 2937 ssl_ok(SSL *s) 2938 { 2939 return (1); 2940 } 2941 2942 X509_STORE * 2943 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2944 { 2945 return (ctx->cert_store); 2946 } 2947 2948 void 2949 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2950 { 2951 X509_STORE_free(ctx->cert_store); 2952 ctx->cert_store = store; 2953 } 2954 2955 X509 * 2956 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2957 { 2958 if (ctx->internal->cert == NULL) 2959 return NULL; 2960 2961 return ctx->internal->cert->key->x509; 2962 } 2963 2964 int 2965 SSL_want(const SSL *s) 2966 { 2967 return (s->internal->rwstate); 2968 } 2969 2970 void 2971 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2972 int keylength)) 2973 { 2974 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2975 } 2976 2977 void 2978 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2979 int keylength)) 2980 { 2981 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2982 } 2983 2984 void 2985 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2986 int keylength)) 2987 { 2988 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2989 } 2990 2991 void 2992 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2993 int keylength)) 2994 { 2995 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2996 } 2997 2998 void 2999 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3000 int is_export, int keylength)) 3001 { 3002 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3003 (void (*)(void))ecdh); 3004 } 3005 3006 void 3007 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3008 int keylength)) 3009 { 3010 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3011 } 3012 3013 3014 void 3015 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3016 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3017 { 3018 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3019 (void (*)(void))cb); 3020 } 3021 3022 void 3023 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3024 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3025 { 3026 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3027 } 3028 3029 void 3030 SSL_set_debug(SSL *s, int debug) 3031 { 3032 s->internal->debug = debug; 3033 } 3034 3035 int 3036 SSL_cache_hit(SSL *s) 3037 { 3038 return (s->internal->hit); 3039 } 3040 3041 int 3042 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3043 { 3044 return ctx->internal->min_version; 3045 } 3046 3047 int 3048 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3049 { 3050 return ssl_version_set_min(ctx->method, version, 3051 ctx->internal->max_version, &ctx->internal->min_version); 3052 } 3053 3054 int 3055 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3056 { 3057 return ctx->internal->max_version; 3058 } 3059 3060 int 3061 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3062 { 3063 return ssl_version_set_max(ctx->method, version, 3064 ctx->internal->min_version, &ctx->internal->max_version); 3065 } 3066 3067 int 3068 SSL_get_min_proto_version(SSL *ssl) 3069 { 3070 return ssl->internal->min_version; 3071 } 3072 3073 int 3074 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3075 { 3076 return ssl_version_set_min(ssl->method, version, 3077 ssl->internal->max_version, &ssl->internal->min_version); 3078 } 3079 int 3080 SSL_get_max_proto_version(SSL *ssl) 3081 { 3082 return ssl->internal->max_version; 3083 } 3084 3085 int 3086 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3087 { 3088 return ssl_version_set_max(ssl->method, version, 3089 ssl->internal->min_version, &ssl->internal->max_version); 3090 } 3091 3092 static int 3093 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3094 { 3095 SSL_CIPHER const *a = a_; 3096 SSL_CIPHER const *b = b_; 3097 return ssl_cipher_id_cmp(a, b); 3098 } 3099 3100 SSL_CIPHER * 3101 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3102 { 3103 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3104 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3105 } 3106