1 /* $OpenBSD: ssl_lib.c,v 1.261 2021/06/19 16:52:47 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 <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <stdio.h> 148 149 #include <openssl/bn.h> 150 #include <openssl/dh.h> 151 #include <openssl/lhash.h> 152 #include <openssl/objects.h> 153 #include <openssl/ocsp.h> 154 #include <openssl/opensslconf.h> 155 #include <openssl/x509v3.h> 156 157 #ifndef OPENSSL_NO_ENGINE 158 #include <openssl/engine.h> 159 #endif 160 161 #include "bytestring.h" 162 #include "dtls_locl.h" 163 #include "ssl_locl.h" 164 #include "ssl_sigalgs.h" 165 166 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168 int 169 SSL_clear(SSL *s) 170 { 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->internal->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->internal->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->internal->ssl_new(s)) 213 return (0); 214 } else 215 s->method->internal->ssl_clear(s); 216 217 return (1); 218 } 219 220 /* Used to change an SSL_CTXs default SSL method type */ 221 int 222 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223 { 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 230 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 231 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 232 return (0); 233 } 234 return (1); 235 } 236 237 SSL * 238 SSL_new(SSL_CTX *ctx) 239 { 240 SSL *s; 241 242 if (ctx == NULL) { 243 SSLerrorx(SSL_R_NULL_SSL_CTX); 244 return (NULL); 245 } 246 if (ctx->method == NULL) { 247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 248 return (NULL); 249 } 250 251 if ((s = calloc(1, sizeof(*s))) == NULL) 252 goto err; 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 254 goto err; 255 256 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 257 goto err; 258 259 s->internal->min_tls_version = ctx->internal->min_tls_version; 260 s->internal->max_tls_version = ctx->internal->max_tls_version; 261 s->internal->min_proto_version = ctx->internal->min_proto_version; 262 s->internal->max_proto_version = ctx->internal->max_proto_version; 263 264 s->internal->options = ctx->internal->options; 265 s->internal->mode = ctx->internal->mode; 266 s->internal->max_cert_list = ctx->internal->max_cert_list; 267 268 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 269 goto err; 270 271 s->internal->read_ahead = ctx->internal->read_ahead; 272 s->internal->msg_callback = ctx->internal->msg_callback; 273 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 274 s->verify_mode = ctx->verify_mode; 275 s->sid_ctx_length = ctx->sid_ctx_length; 276 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 277 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 278 s->internal->verify_callback = ctx->internal->default_verify_callback; 279 s->internal->generate_session_id = ctx->internal->generate_session_id; 280 281 s->param = X509_VERIFY_PARAM_new(); 282 if (!s->param) 283 goto err; 284 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 285 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 286 s->max_send_fragment = ctx->internal->max_send_fragment; 287 288 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 289 s->ctx = ctx; 290 s->internal->tlsext_debug_cb = 0; 291 s->internal->tlsext_debug_arg = NULL; 292 s->internal->tlsext_ticket_expected = 0; 293 s->tlsext_status_type = -1; 294 s->internal->tlsext_status_expected = 0; 295 s->internal->tlsext_ocsp_ids = NULL; 296 s->internal->tlsext_ocsp_exts = NULL; 297 s->internal->tlsext_ocsp_resp = NULL; 298 s->internal->tlsext_ocsp_resp_len = 0; 299 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 300 s->initial_ctx = ctx; 301 302 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 303 s->internal->tlsext_ecpointformatlist = 304 calloc(ctx->internal->tlsext_ecpointformatlist_length, 305 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 306 if (s->internal->tlsext_ecpointformatlist == NULL) 307 goto err; 308 memcpy(s->internal->tlsext_ecpointformatlist, 309 ctx->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist_length * 311 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 312 s->internal->tlsext_ecpointformatlist_length = 313 ctx->internal->tlsext_ecpointformatlist_length; 314 } 315 if (ctx->internal->tlsext_supportedgroups != NULL) { 316 s->internal->tlsext_supportedgroups = 317 calloc(ctx->internal->tlsext_supportedgroups_length, 318 sizeof(ctx->internal->tlsext_supportedgroups[0])); 319 if (s->internal->tlsext_supportedgroups == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_supportedgroups, 322 ctx->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups_length * 324 sizeof(ctx->internal->tlsext_supportedgroups[0])); 325 s->internal->tlsext_supportedgroups_length = 326 ctx->internal->tlsext_supportedgroups_length; 327 } 328 329 if (s->ctx->internal->alpn_client_proto_list != NULL) { 330 s->internal->alpn_client_proto_list = 331 malloc(s->ctx->internal->alpn_client_proto_list_len); 332 if (s->internal->alpn_client_proto_list == NULL) 333 goto err; 334 memcpy(s->internal->alpn_client_proto_list, 335 s->ctx->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list_len); 337 s->internal->alpn_client_proto_list_len = 338 s->ctx->internal->alpn_client_proto_list_len; 339 } 340 341 s->verify_result = X509_V_OK; 342 343 s->method = ctx->method; 344 345 if (!s->method->internal->ssl_new(s)) 346 goto err; 347 348 s->references = 1; 349 s->server = ctx->method->internal->server; 350 351 SSL_clear(s); 352 353 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 354 355 return (s); 356 357 err: 358 SSL_free(s); 359 SSLerrorx(ERR_R_MALLOC_FAILURE); 360 return (NULL); 361 } 362 363 int 364 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 365 unsigned int sid_ctx_len) 366 { 367 if (sid_ctx_len > sizeof ctx->sid_ctx) { 368 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 369 return (0); 370 } 371 ctx->sid_ctx_length = sid_ctx_len; 372 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 373 374 return (1); 375 } 376 377 int 378 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 379 unsigned int sid_ctx_len) 380 { 381 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 382 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 383 return (0); 384 } 385 ssl->sid_ctx_length = sid_ctx_len; 386 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 387 388 return (1); 389 } 390 391 int 392 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 393 { 394 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 395 ctx->internal->generate_session_id = cb; 396 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 397 return (1); 398 } 399 400 int 401 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 402 { 403 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 404 ssl->internal->generate_session_id = cb; 405 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 406 return (1); 407 } 408 409 int 410 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 411 unsigned int id_len) 412 { 413 /* 414 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 415 * shows how we can "construct" a session to give us the desired 416 * check - ie. to find if there's a session in the hash table 417 * that would conflict with any new session built out of this 418 * id/id_len and the ssl_version in use by this SSL. 419 */ 420 SSL_SESSION r, *p; 421 422 if (id_len > sizeof r.session_id) 423 return (0); 424 425 r.ssl_version = ssl->version; 426 r.session_id_length = id_len; 427 memcpy(r.session_id, id, id_len); 428 429 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 430 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 431 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 432 return (p != NULL); 433 } 434 435 int 436 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 437 { 438 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 439 } 440 441 int 442 SSL_set_purpose(SSL *s, int purpose) 443 { 444 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 445 } 446 447 int 448 SSL_CTX_set_trust(SSL_CTX *s, int trust) 449 { 450 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 451 } 452 453 int 454 SSL_set_trust(SSL *s, int trust) 455 { 456 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 457 } 458 459 int 460 SSL_set1_host(SSL *s, const char *hostname) 461 { 462 struct in_addr ina; 463 struct in6_addr in6a; 464 465 if (hostname != NULL && *hostname != '\0' && 466 (inet_pton(AF_INET, hostname, &ina) == 1 || 467 inet_pton(AF_INET6, hostname, &in6a) == 1)) 468 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 469 else 470 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 471 } 472 473 void 474 SSL_set_hostflags(SSL *s, unsigned int flags) 475 { 476 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 477 } 478 479 const char * 480 SSL_get0_peername(SSL *s) 481 { 482 return X509_VERIFY_PARAM_get0_peername(s->param); 483 } 484 485 X509_VERIFY_PARAM * 486 SSL_CTX_get0_param(SSL_CTX *ctx) 487 { 488 return (ctx->param); 489 } 490 491 int 492 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 493 { 494 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 495 } 496 497 X509_VERIFY_PARAM * 498 SSL_get0_param(SSL *ssl) 499 { 500 return (ssl->param); 501 } 502 503 int 504 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 505 { 506 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 507 } 508 509 void 510 SSL_free(SSL *s) 511 { 512 int i; 513 514 if (s == NULL) 515 return; 516 517 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 518 if (i > 0) 519 return; 520 521 X509_VERIFY_PARAM_free(s->param); 522 523 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 524 525 if (s->bbio != NULL) { 526 /* If the buffering BIO is in place, pop it off */ 527 if (s->bbio == s->wbio) { 528 s->wbio = BIO_pop(s->wbio); 529 } 530 BIO_free(s->bbio); 531 s->bbio = NULL; 532 } 533 534 if (s->rbio != s->wbio) 535 BIO_free_all(s->rbio); 536 BIO_free_all(s->wbio); 537 538 tls13_ctx_free(s->internal->tls13); 539 540 ssl3_release_init_buffer(s); 541 542 sk_SSL_CIPHER_free(s->cipher_list); 543 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 544 545 /* Make the next call work :-) */ 546 if (s->session != NULL) { 547 ssl_clear_bad_session(s); 548 SSL_SESSION_free(s->session); 549 } 550 551 ssl_clear_cipher_state(s); 552 553 ssl_cert_free(s->cert); 554 555 free(s->tlsext_hostname); 556 SSL_CTX_free(s->initial_ctx); 557 558 free(s->internal->tlsext_ecpointformatlist); 559 free(s->internal->tlsext_supportedgroups); 560 561 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 562 X509_EXTENSION_free); 563 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 564 free(s->internal->tlsext_ocsp_resp); 565 566 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 567 568 if (s->method != NULL) 569 s->method->internal->ssl_free(s); 570 571 SSL_CTX_free(s->ctx); 572 573 free(s->internal->alpn_client_proto_list); 574 575 #ifndef OPENSSL_NO_SRTP 576 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 577 #endif 578 579 tls12_record_layer_free(s->internal->rl); 580 581 free(s->internal); 582 free(s); 583 } 584 585 int 586 SSL_up_ref(SSL *s) 587 { 588 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 589 return (refs > 1) ? 1 : 0; 590 } 591 592 void 593 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 594 { 595 /* If the output buffering BIO is still in place, remove it */ 596 if (s->bbio != NULL) { 597 if (s->wbio == s->bbio) { 598 s->wbio = s->wbio->next_bio; 599 s->bbio->next_bio = NULL; 600 } 601 } 602 603 if (s->rbio != rbio && s->rbio != s->wbio) 604 BIO_free_all(s->rbio); 605 if (s->wbio != wbio) 606 BIO_free_all(s->wbio); 607 s->rbio = rbio; 608 s->wbio = wbio; 609 } 610 611 BIO * 612 SSL_get_rbio(const SSL *s) 613 { 614 return (s->rbio); 615 } 616 617 BIO * 618 SSL_get_wbio(const SSL *s) 619 { 620 return (s->wbio); 621 } 622 623 int 624 SSL_get_fd(const SSL *s) 625 { 626 return (SSL_get_rfd(s)); 627 } 628 629 int 630 SSL_get_rfd(const SSL *s) 631 { 632 int ret = -1; 633 BIO *b, *r; 634 635 b = SSL_get_rbio(s); 636 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 637 if (r != NULL) 638 BIO_get_fd(r, &ret); 639 return (ret); 640 } 641 642 int 643 SSL_get_wfd(const SSL *s) 644 { 645 int ret = -1; 646 BIO *b, *r; 647 648 b = SSL_get_wbio(s); 649 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 650 if (r != NULL) 651 BIO_get_fd(r, &ret); 652 return (ret); 653 } 654 655 int 656 SSL_set_fd(SSL *s, int fd) 657 { 658 int ret = 0; 659 BIO *bio = NULL; 660 661 bio = BIO_new(BIO_s_socket()); 662 663 if (bio == NULL) { 664 SSLerror(s, ERR_R_BUF_LIB); 665 goto err; 666 } 667 BIO_set_fd(bio, fd, BIO_NOCLOSE); 668 SSL_set_bio(s, bio, bio); 669 ret = 1; 670 err: 671 return (ret); 672 } 673 674 int 675 SSL_set_wfd(SSL *s, int fd) 676 { 677 int ret = 0; 678 BIO *bio = NULL; 679 680 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 681 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 682 bio = BIO_new(BIO_s_socket()); 683 684 if (bio == NULL) { 685 SSLerror(s, ERR_R_BUF_LIB); 686 goto err; 687 } 688 BIO_set_fd(bio, fd, BIO_NOCLOSE); 689 SSL_set_bio(s, SSL_get_rbio(s), bio); 690 } else 691 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 692 ret = 1; 693 err: 694 return (ret); 695 } 696 697 int 698 SSL_set_rfd(SSL *s, int fd) 699 { 700 int ret = 0; 701 BIO *bio = NULL; 702 703 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 704 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 705 bio = BIO_new(BIO_s_socket()); 706 707 if (bio == NULL) { 708 SSLerror(s, ERR_R_BUF_LIB); 709 goto err; 710 } 711 BIO_set_fd(bio, fd, BIO_NOCLOSE); 712 SSL_set_bio(s, bio, SSL_get_wbio(s)); 713 } else 714 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 715 ret = 1; 716 err: 717 return (ret); 718 } 719 720 721 /* return length of latest Finished message we sent, copy to 'buf' */ 722 size_t 723 SSL_get_finished(const SSL *s, void *buf, size_t count) 724 { 725 size_t ret; 726 727 ret = S3I(s)->hs.finished_len; 728 if (count > ret) 729 count = ret; 730 memcpy(buf, S3I(s)->hs.finished, count); 731 return (ret); 732 } 733 734 /* return length of latest Finished message we expected, copy to 'buf' */ 735 size_t 736 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 737 { 738 size_t ret; 739 740 ret = S3I(s)->hs.peer_finished_len; 741 if (count > ret) 742 count = ret; 743 memcpy(buf, S3I(s)->hs.peer_finished, count); 744 return (ret); 745 } 746 747 748 int 749 SSL_get_verify_mode(const SSL *s) 750 { 751 return (s->verify_mode); 752 } 753 754 int 755 SSL_get_verify_depth(const SSL *s) 756 { 757 return (X509_VERIFY_PARAM_get_depth(s->param)); 758 } 759 760 int 761 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 762 { 763 return (s->internal->verify_callback); 764 } 765 766 int 767 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 768 { 769 return (ctx->verify_mode); 770 } 771 772 int 773 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 774 { 775 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 776 } 777 778 int 779 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 780 { 781 return (ctx->internal->default_verify_callback); 782 } 783 784 void 785 SSL_set_verify(SSL *s, int mode, 786 int (*callback)(int ok, X509_STORE_CTX *ctx)) 787 { 788 s->verify_mode = mode; 789 if (callback != NULL) 790 s->internal->verify_callback = callback; 791 } 792 793 void 794 SSL_set_verify_depth(SSL *s, int depth) 795 { 796 X509_VERIFY_PARAM_set_depth(s->param, depth); 797 } 798 799 void 800 SSL_set_read_ahead(SSL *s, int yes) 801 { 802 s->internal->read_ahead = yes; 803 } 804 805 int 806 SSL_get_read_ahead(const SSL *s) 807 { 808 return (s->internal->read_ahead); 809 } 810 811 int 812 SSL_pending(const SSL *s) 813 { 814 return (s->method->internal->ssl_pending(s)); 815 } 816 817 X509 * 818 SSL_get_peer_certificate(const SSL *s) 819 { 820 X509 *r; 821 822 if ((s == NULL) || (s->session == NULL)) 823 r = NULL; 824 else 825 r = s->session->peer; 826 827 if (r == NULL) 828 return (r); 829 830 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 831 832 return (r); 833 } 834 835 STACK_OF(X509) * 836 SSL_get_peer_cert_chain(const SSL *s) 837 { 838 STACK_OF(X509) *r; 839 840 if ((s == NULL) || (s->session == NULL) || 841 (SSI(s)->sess_cert == NULL)) 842 r = NULL; 843 else 844 r = SSI(s)->sess_cert->cert_chain; 845 846 /* 847 * If we are a client, cert_chain includes the peer's own 848 * certificate; 849 * if we are a server, it does not. 850 */ 851 return (r); 852 } 853 854 /* 855 * Now in theory, since the calling process own 't' it should be safe to 856 * modify. We need to be able to read f without being hassled 857 */ 858 int 859 SSL_copy_session_id(SSL *t, const SSL *f) 860 { 861 CERT *tmp; 862 863 /* Do we need to do SSL locking? */ 864 if (!SSL_set_session(t, SSL_get_session(f))) 865 return 0; 866 867 /* What if we are set up for one protocol but want to talk another? */ 868 if (t->method != f->method) { 869 t->method->internal->ssl_free(t); 870 t->method = f->method; 871 if (!t->method->internal->ssl_new(t)) 872 return 0; 873 } 874 875 tmp = t->cert; 876 if (f->cert != NULL) { 877 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 878 t->cert = f->cert; 879 } else 880 t->cert = NULL; 881 ssl_cert_free(tmp); 882 883 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 884 return 0; 885 886 return 1; 887 } 888 889 /* Fix this so it checks all the valid key/cert options */ 890 int 891 SSL_CTX_check_private_key(const SSL_CTX *ctx) 892 { 893 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 894 (ctx->internal->cert->key->x509 == NULL)) { 895 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 896 return (0); 897 } 898 if (ctx->internal->cert->key->privatekey == NULL) { 899 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 900 return (0); 901 } 902 return (X509_check_private_key(ctx->internal->cert->key->x509, 903 ctx->internal->cert->key->privatekey)); 904 } 905 906 /* Fix this function so that it takes an optional type parameter */ 907 int 908 SSL_check_private_key(const SSL *ssl) 909 { 910 if (ssl == NULL) { 911 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 912 return (0); 913 } 914 if (ssl->cert == NULL) { 915 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 916 return (0); 917 } 918 if (ssl->cert->key->x509 == NULL) { 919 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 920 return (0); 921 } 922 if (ssl->cert->key->privatekey == NULL) { 923 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 924 return (0); 925 } 926 return (X509_check_private_key(ssl->cert->key->x509, 927 ssl->cert->key->privatekey)); 928 } 929 930 int 931 SSL_accept(SSL *s) 932 { 933 if (s->internal->handshake_func == NULL) 934 SSL_set_accept_state(s); /* Not properly initialized yet */ 935 936 return (s->method->internal->ssl_accept(s)); 937 } 938 939 int 940 SSL_connect(SSL *s) 941 { 942 if (s->internal->handshake_func == NULL) 943 SSL_set_connect_state(s); /* Not properly initialized yet */ 944 945 return (s->method->internal->ssl_connect(s)); 946 } 947 948 int 949 SSL_is_dtls(const SSL *s) 950 { 951 return s->method->internal->dtls; 952 } 953 954 int 955 SSL_is_server(const SSL *s) 956 { 957 return s->server; 958 } 959 960 static long 961 ssl_get_default_timeout() 962 { 963 /* 964 * 2 hours, the 24 hours mentioned in the TLSv1 spec 965 * is way too long for http, the cache would over fill. 966 */ 967 return (2 * 60 * 60); 968 } 969 970 long 971 SSL_get_default_timeout(const SSL *s) 972 { 973 return (ssl_get_default_timeout()); 974 } 975 976 int 977 SSL_read(SSL *s, void *buf, int num) 978 { 979 if (s->internal->handshake_func == NULL) { 980 SSLerror(s, SSL_R_UNINITIALIZED); 981 return (-1); 982 } 983 984 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 985 s->internal->rwstate = SSL_NOTHING; 986 return (0); 987 } 988 return ssl3_read(s, buf, num); 989 } 990 991 int 992 SSL_peek(SSL *s, void *buf, int num) 993 { 994 if (s->internal->handshake_func == NULL) { 995 SSLerror(s, SSL_R_UNINITIALIZED); 996 return (-1); 997 } 998 999 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1000 return (0); 1001 } 1002 return ssl3_peek(s, buf, num); 1003 } 1004 1005 int 1006 SSL_write(SSL *s, const void *buf, int num) 1007 { 1008 if (s->internal->handshake_func == NULL) { 1009 SSLerror(s, SSL_R_UNINITIALIZED); 1010 return (-1); 1011 } 1012 1013 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1014 s->internal->rwstate = SSL_NOTHING; 1015 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1016 return (-1); 1017 } 1018 return ssl3_write(s, buf, num); 1019 } 1020 1021 uint32_t 1022 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1023 { 1024 return 0; 1025 } 1026 1027 int 1028 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1029 { 1030 return 1; 1031 } 1032 1033 uint32_t 1034 SSL_get_max_early_data(const SSL *s) 1035 { 1036 return 0; 1037 } 1038 1039 int 1040 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1041 { 1042 return 1; 1043 } 1044 1045 int 1046 SSL_get_early_data_status(const SSL *s) 1047 { 1048 return SSL_EARLY_DATA_REJECTED; 1049 } 1050 1051 int 1052 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1053 { 1054 *readbytes = 0; 1055 1056 if (!s->server) { 1057 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1058 return SSL_READ_EARLY_DATA_ERROR; 1059 } 1060 1061 return SSL_READ_EARLY_DATA_FINISH; 1062 } 1063 1064 int 1065 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1066 { 1067 *written = 0; 1068 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1069 return 0; 1070 } 1071 1072 int 1073 SSL_shutdown(SSL *s) 1074 { 1075 /* 1076 * Note that this function behaves differently from what one might 1077 * expect. Return values are 0 for no success (yet), 1078 * 1 for success; but calling it once is usually not enough, 1079 * even if blocking I/O is used (see ssl3_shutdown). 1080 */ 1081 1082 if (s->internal->handshake_func == NULL) { 1083 SSLerror(s, SSL_R_UNINITIALIZED); 1084 return (-1); 1085 } 1086 1087 if (s != NULL && !SSL_in_init(s)) 1088 return (s->method->internal->ssl_shutdown(s)); 1089 1090 return (1); 1091 } 1092 1093 int 1094 SSL_renegotiate(SSL *s) 1095 { 1096 if (s->internal->renegotiate == 0) 1097 s->internal->renegotiate = 1; 1098 1099 s->internal->new_session = 1; 1100 1101 return (s->method->internal->ssl_renegotiate(s)); 1102 } 1103 1104 int 1105 SSL_renegotiate_abbreviated(SSL *s) 1106 { 1107 if (s->internal->renegotiate == 0) 1108 s->internal->renegotiate = 1; 1109 1110 s->internal->new_session = 0; 1111 1112 return (s->method->internal->ssl_renegotiate(s)); 1113 } 1114 1115 int 1116 SSL_renegotiate_pending(SSL *s) 1117 { 1118 /* 1119 * Becomes true when negotiation is requested; 1120 * false again once a handshake has finished. 1121 */ 1122 return (s->internal->renegotiate != 0); 1123 } 1124 1125 long 1126 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1127 { 1128 long l; 1129 1130 switch (cmd) { 1131 case SSL_CTRL_GET_READ_AHEAD: 1132 return (s->internal->read_ahead); 1133 case SSL_CTRL_SET_READ_AHEAD: 1134 l = s->internal->read_ahead; 1135 s->internal->read_ahead = larg; 1136 return (l); 1137 1138 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1139 s->internal->msg_callback_arg = parg; 1140 return (1); 1141 1142 case SSL_CTRL_OPTIONS: 1143 return (s->internal->options|=larg); 1144 case SSL_CTRL_CLEAR_OPTIONS: 1145 return (s->internal->options&=~larg); 1146 case SSL_CTRL_MODE: 1147 return (s->internal->mode|=larg); 1148 case SSL_CTRL_CLEAR_MODE: 1149 return (s->internal->mode &=~larg); 1150 case SSL_CTRL_GET_MAX_CERT_LIST: 1151 return (s->internal->max_cert_list); 1152 case SSL_CTRL_SET_MAX_CERT_LIST: 1153 l = s->internal->max_cert_list; 1154 s->internal->max_cert_list = larg; 1155 return (l); 1156 case SSL_CTRL_SET_MTU: 1157 #ifndef OPENSSL_NO_DTLS1 1158 if (larg < (long)dtls1_min_mtu()) 1159 return (0); 1160 #endif 1161 if (SSL_is_dtls(s)) { 1162 D1I(s)->mtu = larg; 1163 return (larg); 1164 } 1165 return (0); 1166 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1167 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1168 return (0); 1169 s->max_send_fragment = larg; 1170 return (1); 1171 case SSL_CTRL_GET_RI_SUPPORT: 1172 if (s->s3) 1173 return (S3I(s)->send_connection_binding); 1174 else return (0); 1175 default: 1176 if (SSL_is_dtls(s)) 1177 return dtls1_ctrl(s, cmd, larg, parg); 1178 return ssl3_ctrl(s, cmd, larg, parg); 1179 } 1180 } 1181 1182 long 1183 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1184 { 1185 switch (cmd) { 1186 case SSL_CTRL_SET_MSG_CALLBACK: 1187 s->internal->msg_callback = (void (*)(int write_p, int version, 1188 int content_type, const void *buf, size_t len, 1189 SSL *ssl, void *arg))(fp); 1190 return (1); 1191 1192 default: 1193 return (ssl3_callback_ctrl(s, cmd, fp)); 1194 } 1195 } 1196 1197 struct lhash_st_SSL_SESSION * 1198 SSL_CTX_sessions(SSL_CTX *ctx) 1199 { 1200 return (ctx->internal->sessions); 1201 } 1202 1203 long 1204 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1205 { 1206 long l; 1207 1208 switch (cmd) { 1209 case SSL_CTRL_GET_READ_AHEAD: 1210 return (ctx->internal->read_ahead); 1211 case SSL_CTRL_SET_READ_AHEAD: 1212 l = ctx->internal->read_ahead; 1213 ctx->internal->read_ahead = larg; 1214 return (l); 1215 1216 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1217 ctx->internal->msg_callback_arg = parg; 1218 return (1); 1219 1220 case SSL_CTRL_GET_MAX_CERT_LIST: 1221 return (ctx->internal->max_cert_list); 1222 case SSL_CTRL_SET_MAX_CERT_LIST: 1223 l = ctx->internal->max_cert_list; 1224 ctx->internal->max_cert_list = larg; 1225 return (l); 1226 1227 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1228 l = ctx->internal->session_cache_size; 1229 ctx->internal->session_cache_size = larg; 1230 return (l); 1231 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1232 return (ctx->internal->session_cache_size); 1233 case SSL_CTRL_SET_SESS_CACHE_MODE: 1234 l = ctx->internal->session_cache_mode; 1235 ctx->internal->session_cache_mode = larg; 1236 return (l); 1237 case SSL_CTRL_GET_SESS_CACHE_MODE: 1238 return (ctx->internal->session_cache_mode); 1239 1240 case SSL_CTRL_SESS_NUMBER: 1241 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1242 case SSL_CTRL_SESS_CONNECT: 1243 return (ctx->internal->stats.sess_connect); 1244 case SSL_CTRL_SESS_CONNECT_GOOD: 1245 return (ctx->internal->stats.sess_connect_good); 1246 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1247 return (ctx->internal->stats.sess_connect_renegotiate); 1248 case SSL_CTRL_SESS_ACCEPT: 1249 return (ctx->internal->stats.sess_accept); 1250 case SSL_CTRL_SESS_ACCEPT_GOOD: 1251 return (ctx->internal->stats.sess_accept_good); 1252 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1253 return (ctx->internal->stats.sess_accept_renegotiate); 1254 case SSL_CTRL_SESS_HIT: 1255 return (ctx->internal->stats.sess_hit); 1256 case SSL_CTRL_SESS_CB_HIT: 1257 return (ctx->internal->stats.sess_cb_hit); 1258 case SSL_CTRL_SESS_MISSES: 1259 return (ctx->internal->stats.sess_miss); 1260 case SSL_CTRL_SESS_TIMEOUTS: 1261 return (ctx->internal->stats.sess_timeout); 1262 case SSL_CTRL_SESS_CACHE_FULL: 1263 return (ctx->internal->stats.sess_cache_full); 1264 case SSL_CTRL_OPTIONS: 1265 return (ctx->internal->options|=larg); 1266 case SSL_CTRL_CLEAR_OPTIONS: 1267 return (ctx->internal->options&=~larg); 1268 case SSL_CTRL_MODE: 1269 return (ctx->internal->mode|=larg); 1270 case SSL_CTRL_CLEAR_MODE: 1271 return (ctx->internal->mode&=~larg); 1272 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1273 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1274 return (0); 1275 ctx->internal->max_send_fragment = larg; 1276 return (1); 1277 default: 1278 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1279 } 1280 } 1281 1282 long 1283 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1284 { 1285 switch (cmd) { 1286 case SSL_CTRL_SET_MSG_CALLBACK: 1287 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1288 int content_type, const void *buf, size_t len, SSL *ssl, 1289 void *arg))(fp); 1290 return (1); 1291 1292 default: 1293 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1294 } 1295 } 1296 1297 int 1298 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1299 { 1300 long l; 1301 1302 l = a->id - b->id; 1303 if (l == 0L) 1304 return (0); 1305 else 1306 return ((l > 0) ? 1:-1); 1307 } 1308 1309 STACK_OF(SSL_CIPHER) * 1310 SSL_get_ciphers(const SSL *s) 1311 { 1312 if (s == NULL) 1313 return (NULL); 1314 if (s->cipher_list != NULL) 1315 return (s->cipher_list); 1316 1317 return (s->ctx->cipher_list); 1318 } 1319 1320 STACK_OF(SSL_CIPHER) * 1321 SSL_get_client_ciphers(const SSL *s) 1322 { 1323 if (s == NULL || s->session == NULL || !s->server) 1324 return NULL; 1325 return s->session->ciphers; 1326 } 1327 1328 STACK_OF(SSL_CIPHER) * 1329 SSL_get1_supported_ciphers(SSL *s) 1330 { 1331 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1332 const SSL_CIPHER *cipher; 1333 uint16_t min_vers, max_vers; 1334 int i; 1335 1336 if (s == NULL) 1337 return NULL; 1338 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1339 return NULL; 1340 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1341 return NULL; 1342 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1343 return NULL; 1344 1345 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1346 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1347 goto err; 1348 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1349 max_vers)) 1350 continue; 1351 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1352 goto err; 1353 } 1354 1355 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1356 return supported_ciphers; 1357 1358 err: 1359 sk_SSL_CIPHER_free(supported_ciphers); 1360 return NULL; 1361 } 1362 1363 /* See if we have any ECC cipher suites. */ 1364 int 1365 ssl_has_ecc_ciphers(SSL *s) 1366 { 1367 STACK_OF(SSL_CIPHER) *ciphers; 1368 unsigned long alg_k, alg_a; 1369 SSL_CIPHER *cipher; 1370 int i; 1371 1372 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1373 return 0; 1374 1375 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1376 cipher = sk_SSL_CIPHER_value(ciphers, i); 1377 1378 alg_k = cipher->algorithm_mkey; 1379 alg_a = cipher->algorithm_auth; 1380 1381 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1382 return 1; 1383 } 1384 1385 return 0; 1386 } 1387 1388 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1389 const char * 1390 SSL_get_cipher_list(const SSL *s, int n) 1391 { 1392 STACK_OF(SSL_CIPHER) *ciphers; 1393 const SSL_CIPHER *cipher; 1394 1395 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1396 return (NULL); 1397 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1398 return (NULL); 1399 1400 return (cipher->name); 1401 } 1402 1403 STACK_OF(SSL_CIPHER) * 1404 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1405 { 1406 if (ctx == NULL) 1407 return NULL; 1408 return ctx->cipher_list; 1409 } 1410 1411 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1412 int 1413 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1414 { 1415 STACK_OF(SSL_CIPHER) *ciphers; 1416 1417 /* 1418 * ssl_create_cipher_list may return an empty stack if it was unable to 1419 * find a cipher matching the given rule string (for example if the 1420 * rule string specifies a cipher which has been disabled). This is not 1421 * an error as far as ssl_create_cipher_list is concerned, and hence 1422 * ctx->cipher_list has been updated. 1423 */ 1424 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1425 ctx->internal->cipher_list_tls13, str); 1426 if (ciphers == NULL) { 1427 return (0); 1428 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1429 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1430 return (0); 1431 } 1432 return (1); 1433 } 1434 1435 int 1436 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1437 { 1438 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1439 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1440 return 0; 1441 } 1442 if (!ssl_merge_cipherlists(ctx->cipher_list, 1443 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1444 return 0; 1445 1446 return 1; 1447 } 1448 1449 /* Specify the ciphers to be used by the SSL. */ 1450 int 1451 SSL_set_cipher_list(SSL *s, const char *str) 1452 { 1453 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1454 1455 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1456 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1457 1458 /* See comment in SSL_CTX_set_cipher_list. */ 1459 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1460 ciphers_tls13, str); 1461 if (ciphers == NULL) { 1462 return (0); 1463 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1464 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1465 return (0); 1466 } 1467 return (1); 1468 } 1469 1470 int 1471 SSL_set_ciphersuites(SSL *s, const char *str) 1472 { 1473 STACK_OF(SSL_CIPHER) *ciphers; 1474 1475 if ((ciphers = s->cipher_list) == NULL) 1476 ciphers = s->ctx->cipher_list; 1477 1478 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1479 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1480 return (0); 1481 } 1482 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1483 &s->cipher_list)) 1484 return 0; 1485 1486 return 1; 1487 } 1488 1489 char * 1490 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1491 { 1492 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1493 const SSL_CIPHER *cipher; 1494 size_t curlen = 0; 1495 char *end; 1496 int i; 1497 1498 if (!s->server || s->session == NULL || len < 2) 1499 return NULL; 1500 1501 if ((client_ciphers = s->session->ciphers) == NULL) 1502 return NULL; 1503 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1504 return NULL; 1505 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1506 sk_SSL_CIPHER_num(server_ciphers) == 0) 1507 return NULL; 1508 1509 buf[0] = '\0'; 1510 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1511 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1512 1513 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1514 continue; 1515 1516 end = buf + curlen; 1517 if (strlcat(buf, cipher->name, len) >= len || 1518 (curlen = strlcat(buf, ":", len)) >= len) { 1519 /* remove truncated cipher from list */ 1520 *end = '\0'; 1521 break; 1522 } 1523 } 1524 /* remove trailing colon */ 1525 if ((end = strrchr(buf, ':')) != NULL) 1526 *end = '\0'; 1527 return buf; 1528 } 1529 1530 /* 1531 * Return a servername extension value if provided in Client Hello, or NULL. 1532 * So far, only host_name types are defined (RFC 3546). 1533 */ 1534 const char * 1535 SSL_get_servername(const SSL *s, const int type) 1536 { 1537 if (type != TLSEXT_NAMETYPE_host_name) 1538 return (NULL); 1539 1540 return (s->session && !s->tlsext_hostname ? 1541 s->session->tlsext_hostname : 1542 s->tlsext_hostname); 1543 } 1544 1545 int 1546 SSL_get_servername_type(const SSL *s) 1547 { 1548 if (s->session && 1549 (!s->tlsext_hostname ? 1550 s->session->tlsext_hostname : s->tlsext_hostname)) 1551 return (TLSEXT_NAMETYPE_host_name); 1552 return (-1); 1553 } 1554 1555 /* 1556 * SSL_select_next_proto implements standard protocol selection. It is 1557 * expected that this function is called from the callback set by 1558 * SSL_CTX_set_alpn_select_cb. 1559 * 1560 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1561 * strings. The length byte itself is not included in the length. A byte 1562 * string of length 0 is invalid. No byte string may be truncated. 1563 * 1564 * It returns either: 1565 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1566 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1567 */ 1568 int 1569 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1570 const unsigned char *server, unsigned int server_len, 1571 const unsigned char *client, unsigned int client_len) 1572 { 1573 unsigned int i, j; 1574 const unsigned char *result; 1575 int status = OPENSSL_NPN_UNSUPPORTED; 1576 1577 /* 1578 * For each protocol in server preference order, 1579 * see if we support it. 1580 */ 1581 for (i = 0; i < server_len; ) { 1582 for (j = 0; j < client_len; ) { 1583 if (server[i] == client[j] && 1584 memcmp(&server[i + 1], 1585 &client[j + 1], server[i]) == 0) { 1586 /* We found a match */ 1587 result = &server[i]; 1588 status = OPENSSL_NPN_NEGOTIATED; 1589 goto found; 1590 } 1591 j += client[j]; 1592 j++; 1593 } 1594 i += server[i]; 1595 i++; 1596 } 1597 1598 /* There's no overlap between our protocols and the server's list. */ 1599 result = client; 1600 status = OPENSSL_NPN_NO_OVERLAP; 1601 1602 found: 1603 *out = (unsigned char *) result + 1; 1604 *outlen = result[0]; 1605 return (status); 1606 } 1607 1608 /* SSL_get0_next_proto_negotiated is deprecated. */ 1609 void 1610 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1611 unsigned int *len) 1612 { 1613 *data = NULL; 1614 *len = 0; 1615 } 1616 1617 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1618 void 1619 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1620 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1621 { 1622 } 1623 1624 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1625 void 1626 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1627 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1628 unsigned int inlen, void *arg), void *arg) 1629 { 1630 } 1631 1632 /* 1633 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1634 * protocols, which must be in wire-format (i.e. a series of non-empty, 1635 * 8-bit length-prefixed strings). Returns 0 on success. 1636 */ 1637 int 1638 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1639 unsigned int protos_len) 1640 { 1641 int failed = 1; 1642 1643 if (protos == NULL || protos_len == 0) 1644 goto err; 1645 1646 free(ctx->internal->alpn_client_proto_list); 1647 ctx->internal->alpn_client_proto_list = NULL; 1648 ctx->internal->alpn_client_proto_list_len = 0; 1649 1650 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1651 == NULL) 1652 goto err; 1653 ctx->internal->alpn_client_proto_list_len = protos_len; 1654 1655 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1656 1657 failed = 0; 1658 1659 err: 1660 /* NOTE: Return values are the reverse of what you expect. */ 1661 return (failed); 1662 } 1663 1664 /* 1665 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1666 * protocols, which must be in wire-format (i.e. a series of non-empty, 1667 * 8-bit length-prefixed strings). Returns 0 on success. 1668 */ 1669 int 1670 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1671 unsigned int protos_len) 1672 { 1673 int failed = 1; 1674 1675 if (protos == NULL || protos_len == 0) 1676 goto err; 1677 1678 free(ssl->internal->alpn_client_proto_list); 1679 ssl->internal->alpn_client_proto_list = NULL; 1680 ssl->internal->alpn_client_proto_list_len = 0; 1681 1682 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1683 == NULL) 1684 goto err; 1685 ssl->internal->alpn_client_proto_list_len = protos_len; 1686 1687 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1688 1689 failed = 0; 1690 1691 err: 1692 /* NOTE: Return values are the reverse of what you expect. */ 1693 return (failed); 1694 } 1695 1696 /* 1697 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1698 * ClientHello processing in order to select an ALPN protocol from the 1699 * client's list of offered protocols. 1700 */ 1701 void 1702 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1703 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1704 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1705 { 1706 ctx->internal->alpn_select_cb = cb; 1707 ctx->internal->alpn_select_cb_arg = arg; 1708 } 1709 1710 /* 1711 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1712 * it sets data to point to len bytes of protocol name (not including the 1713 * leading length-prefix byte). If the server didn't respond with* a negotiated 1714 * protocol then len will be zero. 1715 */ 1716 void 1717 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1718 unsigned int *len) 1719 { 1720 *data = ssl->s3->internal->alpn_selected; 1721 *len = ssl->s3->internal->alpn_selected_len; 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 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1730 if (!use_context) { 1731 p = NULL; 1732 plen = 0; 1733 } 1734 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1735 out, olen); 1736 } 1737 1738 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1739 use_context)); 1740 } 1741 1742 static unsigned long 1743 ssl_session_hash(const SSL_SESSION *a) 1744 { 1745 unsigned long l; 1746 1747 l = (unsigned long) 1748 ((unsigned int) a->session_id[0] )| 1749 ((unsigned int) a->session_id[1]<< 8L)| 1750 ((unsigned long)a->session_id[2]<<16L)| 1751 ((unsigned long)a->session_id[3]<<24L); 1752 return (l); 1753 } 1754 1755 /* 1756 * NB: If this function (or indeed the hash function which uses a sort of 1757 * coarser function than this one) is changed, ensure 1758 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1759 * able to construct an SSL_SESSION that will collide with any existing session 1760 * with a matching session ID. 1761 */ 1762 static int 1763 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1764 { 1765 if (a->ssl_version != b->ssl_version) 1766 return (1); 1767 if (a->session_id_length != b->session_id_length) 1768 return (1); 1769 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1770 return (1); 1771 return (0); 1772 } 1773 1774 /* 1775 * These wrapper functions should remain rather than redeclaring 1776 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1777 * variable. The reason is that the functions aren't static, they're exposed via 1778 * ssl.h. 1779 */ 1780 static unsigned long 1781 ssl_session_LHASH_HASH(const void *arg) 1782 { 1783 const SSL_SESSION *a = arg; 1784 1785 return ssl_session_hash(a); 1786 } 1787 1788 static int 1789 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1790 { 1791 const SSL_SESSION *a = arg1; 1792 const SSL_SESSION *b = arg2; 1793 1794 return ssl_session_cmp(a, b); 1795 } 1796 1797 SSL_CTX * 1798 SSL_CTX_new(const SSL_METHOD *meth) 1799 { 1800 SSL_CTX *ret; 1801 1802 if (!OPENSSL_init_ssl(0, NULL)) { 1803 SSLerrorx(SSL_R_LIBRARY_BUG); 1804 return (NULL); 1805 } 1806 1807 if (meth == NULL) { 1808 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1809 return (NULL); 1810 } 1811 1812 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1813 SSLerrorx(ERR_R_MALLOC_FAILURE); 1814 return (NULL); 1815 } 1816 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1817 free(ret); 1818 SSLerrorx(ERR_R_MALLOC_FAILURE); 1819 return (NULL); 1820 } 1821 1822 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1823 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1824 goto err; 1825 } 1826 1827 ret->method = meth; 1828 ret->internal->min_tls_version = meth->internal->min_tls_version; 1829 ret->internal->max_tls_version = meth->internal->max_tls_version; 1830 ret->internal->min_proto_version = 0; 1831 ret->internal->max_proto_version = 0; 1832 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1833 1834 ret->cert_store = NULL; 1835 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1836 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1837 ret->internal->session_cache_head = NULL; 1838 ret->internal->session_cache_tail = NULL; 1839 1840 /* We take the system default */ 1841 ret->session_timeout = ssl_get_default_timeout(); 1842 1843 ret->internal->new_session_cb = 0; 1844 ret->internal->remove_session_cb = 0; 1845 ret->internal->get_session_cb = 0; 1846 ret->internal->generate_session_id = 0; 1847 1848 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1849 1850 ret->references = 1; 1851 ret->internal->quiet_shutdown = 0; 1852 1853 ret->internal->info_callback = NULL; 1854 1855 ret->internal->app_verify_callback = 0; 1856 ret->internal->app_verify_arg = NULL; 1857 1858 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1859 ret->internal->read_ahead = 0; 1860 ret->internal->msg_callback = 0; 1861 ret->internal->msg_callback_arg = NULL; 1862 ret->verify_mode = SSL_VERIFY_NONE; 1863 ret->sid_ctx_length = 0; 1864 ret->internal->default_verify_callback = NULL; 1865 1866 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1867 goto err; 1868 1869 ret->default_passwd_callback = 0; 1870 ret->default_passwd_callback_userdata = NULL; 1871 ret->internal->client_cert_cb = 0; 1872 ret->internal->app_gen_cookie_cb = 0; 1873 ret->internal->app_verify_cookie_cb = 0; 1874 1875 ret->internal->sessions = lh_SSL_SESSION_new(); 1876 if (ret->internal->sessions == NULL) 1877 goto err; 1878 ret->cert_store = X509_STORE_new(); 1879 if (ret->cert_store == NULL) 1880 goto err; 1881 1882 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1883 NULL, SSL_DEFAULT_CIPHER_LIST); 1884 if (ret->cipher_list == NULL || 1885 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1886 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1887 goto err2; 1888 } 1889 1890 ret->param = X509_VERIFY_PARAM_new(); 1891 if (!ret->param) 1892 goto err; 1893 1894 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1895 goto err; 1896 1897 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1898 1899 ret->extra_certs = NULL; 1900 1901 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1902 1903 ret->internal->tlsext_servername_callback = 0; 1904 ret->internal->tlsext_servername_arg = NULL; 1905 1906 /* Setup RFC4507 ticket keys */ 1907 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1908 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1909 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1910 1911 ret->internal->tlsext_status_cb = 0; 1912 ret->internal->tlsext_status_arg = NULL; 1913 1914 #ifndef OPENSSL_NO_ENGINE 1915 ret->internal->client_cert_engine = NULL; 1916 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1917 #define eng_strx(x) #x 1918 #define eng_str(x) eng_strx(x) 1919 /* Use specific client engine automatically... ignore errors */ 1920 { 1921 ENGINE *eng; 1922 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1923 if (!eng) { 1924 ERR_clear_error(); 1925 ENGINE_load_builtin_engines(); 1926 eng = ENGINE_by_id(eng_str( 1927 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1928 } 1929 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1930 ERR_clear_error(); 1931 } 1932 #endif 1933 #endif 1934 /* 1935 * Default is to connect to non-RI servers. When RI is more widely 1936 * deployed might change this. 1937 */ 1938 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1939 1940 return (ret); 1941 err: 1942 SSLerrorx(ERR_R_MALLOC_FAILURE); 1943 err2: 1944 SSL_CTX_free(ret); 1945 return (NULL); 1946 } 1947 1948 void 1949 SSL_CTX_free(SSL_CTX *ctx) 1950 { 1951 int i; 1952 1953 if (ctx == NULL) 1954 return; 1955 1956 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1957 if (i > 0) 1958 return; 1959 1960 X509_VERIFY_PARAM_free(ctx->param); 1961 1962 /* 1963 * Free internal session cache. However: the remove_cb() may reference 1964 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1965 * after the sessions were flushed. 1966 * As the ex_data handling routines might also touch the session cache, 1967 * the most secure solution seems to be: empty (flush) the cache, then 1968 * free ex_data, then finally free the cache. 1969 * (See ticket [openssl.org #212].) 1970 */ 1971 if (ctx->internal->sessions != NULL) 1972 SSL_CTX_flush_sessions(ctx, 0); 1973 1974 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1975 1976 lh_SSL_SESSION_free(ctx->internal->sessions); 1977 1978 X509_STORE_free(ctx->cert_store); 1979 sk_SSL_CIPHER_free(ctx->cipher_list); 1980 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 1981 ssl_cert_free(ctx->internal->cert); 1982 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1983 sk_X509_pop_free(ctx->extra_certs, X509_free); 1984 1985 #ifndef OPENSSL_NO_SRTP 1986 if (ctx->internal->srtp_profiles) 1987 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1988 #endif 1989 1990 #ifndef OPENSSL_NO_ENGINE 1991 ENGINE_finish(ctx->internal->client_cert_engine); 1992 #endif 1993 1994 free(ctx->internal->tlsext_ecpointformatlist); 1995 free(ctx->internal->tlsext_supportedgroups); 1996 1997 free(ctx->internal->alpn_client_proto_list); 1998 1999 free(ctx->internal); 2000 free(ctx); 2001 } 2002 2003 int 2004 SSL_CTX_up_ref(SSL_CTX *ctx) 2005 { 2006 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2007 return ((refs > 1) ? 1 : 0); 2008 } 2009 2010 pem_password_cb * 2011 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2012 { 2013 return (ctx->default_passwd_callback); 2014 } 2015 2016 void 2017 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2018 { 2019 ctx->default_passwd_callback = cb; 2020 } 2021 2022 void * 2023 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2024 { 2025 return ctx->default_passwd_callback_userdata; 2026 } 2027 2028 void 2029 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2030 { 2031 ctx->default_passwd_callback_userdata = u; 2032 } 2033 2034 void 2035 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2036 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2037 { 2038 ctx->internal->app_verify_callback = cb; 2039 ctx->internal->app_verify_arg = arg; 2040 } 2041 2042 void 2043 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2044 { 2045 ctx->verify_mode = mode; 2046 ctx->internal->default_verify_callback = cb; 2047 } 2048 2049 void 2050 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2051 { 2052 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2053 } 2054 2055 static int 2056 ssl_cert_can_sign(X509 *x) 2057 { 2058 /* This call populates extension flags (ex_flags). */ 2059 X509_check_purpose(x, -1, 0); 2060 2061 /* Key usage, if present, must allow signing. */ 2062 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2063 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2064 } 2065 2066 void 2067 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2068 { 2069 unsigned long mask_a, mask_k; 2070 CERT_PKEY *cpk; 2071 2072 if (c == NULL) 2073 return; 2074 2075 mask_a = SSL_aNULL | SSL_aTLS1_3; 2076 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2077 2078 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2079 mask_k |= SSL_kDHE; 2080 2081 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2082 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2083 if (ssl_cert_can_sign(cpk->x509)) 2084 mask_a |= SSL_aECDSA; 2085 } 2086 2087 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2088 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2089 mask_k |= SSL_kGOST; 2090 mask_a |= SSL_aGOST01; 2091 } 2092 2093 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2094 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2095 mask_a |= SSL_aRSA; 2096 mask_k |= SSL_kRSA; 2097 } 2098 2099 c->mask_k = mask_k; 2100 c->mask_a = mask_a; 2101 c->valid = 1; 2102 } 2103 2104 /* See if this handshake is using an ECC cipher suite. */ 2105 int 2106 ssl_using_ecc_cipher(SSL *s) 2107 { 2108 unsigned long alg_a, alg_k; 2109 2110 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2111 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2112 2113 return SSI(s)->tlsext_ecpointformatlist != NULL && 2114 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2115 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2116 } 2117 2118 int 2119 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2120 { 2121 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2122 unsigned long alg_a; 2123 2124 alg_a = cs->algorithm_auth; 2125 2126 if (alg_a & SSL_aECDSA) { 2127 /* This call populates extension flags (ex_flags). */ 2128 X509_check_purpose(x, -1, 0); 2129 2130 /* Key usage, if present, must allow signing. */ 2131 if ((x->ex_flags & EXFLAG_KUSAGE) && 2132 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2133 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2134 return (0); 2135 } 2136 } 2137 2138 return (1); 2139 } 2140 2141 CERT_PKEY * 2142 ssl_get_server_send_pkey(const SSL *s) 2143 { 2144 unsigned long alg_a; 2145 CERT *c; 2146 int i; 2147 2148 c = s->cert; 2149 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2150 2151 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2152 2153 if (alg_a & SSL_aECDSA) { 2154 i = SSL_PKEY_ECC; 2155 } else if (alg_a & SSL_aRSA) { 2156 i = SSL_PKEY_RSA; 2157 } else if (alg_a & SSL_aGOST01) { 2158 i = SSL_PKEY_GOST01; 2159 } else { /* if (alg_a & SSL_aNULL) */ 2160 SSLerror(s, ERR_R_INTERNAL_ERROR); 2161 return (NULL); 2162 } 2163 2164 return (c->pkeys + i); 2165 } 2166 2167 EVP_PKEY * 2168 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2169 const struct ssl_sigalg **sap) 2170 { 2171 const struct ssl_sigalg *sigalg = NULL; 2172 EVP_PKEY *pkey = NULL; 2173 unsigned long alg_a; 2174 CERT *c; 2175 int idx = -1; 2176 2177 alg_a = cipher->algorithm_auth; 2178 c = s->cert; 2179 2180 if (alg_a & SSL_aRSA) { 2181 idx = SSL_PKEY_RSA; 2182 } else if ((alg_a & SSL_aECDSA) && 2183 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2184 idx = SSL_PKEY_ECC; 2185 if (idx == -1) { 2186 SSLerror(s, ERR_R_INTERNAL_ERROR); 2187 return (NULL); 2188 } 2189 2190 pkey = c->pkeys[idx].privatekey; 2191 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2192 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2193 return (NULL); 2194 } 2195 *pmd = sigalg->md(); 2196 *sap = sigalg; 2197 2198 return (pkey); 2199 } 2200 2201 DH * 2202 ssl_get_auto_dh(SSL *s) 2203 { 2204 CERT_PKEY *cpk; 2205 int keylen; 2206 DH *dhp; 2207 2208 if (s->cert->dh_tmp_auto == 2) { 2209 keylen = 1024; 2210 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2211 keylen = 1024; 2212 if (S3I(s)->hs.cipher->strength_bits == 256) 2213 keylen = 3072; 2214 } else { 2215 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2216 return (NULL); 2217 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2218 return (NULL); 2219 keylen = EVP_PKEY_bits(cpk->privatekey); 2220 } 2221 2222 if ((dhp = DH_new()) == NULL) 2223 return (NULL); 2224 2225 dhp->g = BN_new(); 2226 if (dhp->g != NULL) 2227 BN_set_word(dhp->g, 2); 2228 2229 if (keylen >= 8192) 2230 dhp->p = get_rfc3526_prime_8192(NULL); 2231 else if (keylen >= 4096) 2232 dhp->p = get_rfc3526_prime_4096(NULL); 2233 else if (keylen >= 3072) 2234 dhp->p = get_rfc3526_prime_3072(NULL); 2235 else if (keylen >= 2048) 2236 dhp->p = get_rfc3526_prime_2048(NULL); 2237 else if (keylen >= 1536) 2238 dhp->p = get_rfc3526_prime_1536(NULL); 2239 else 2240 dhp->p = get_rfc2409_prime_1024(NULL); 2241 2242 if (dhp->p == NULL || dhp->g == NULL) { 2243 DH_free(dhp); 2244 return (NULL); 2245 } 2246 return (dhp); 2247 } 2248 2249 void 2250 ssl_update_cache(SSL *s, int mode) 2251 { 2252 int i; 2253 2254 /* 2255 * If the session_id_length is 0, we are not supposed to cache it, 2256 * and it would be rather hard to do anyway :-) 2257 */ 2258 if (s->session->session_id_length == 0) 2259 return; 2260 2261 i = s->session_ctx->internal->session_cache_mode; 2262 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2263 || SSL_CTX_add_session(s->session_ctx, s->session)) 2264 && (s->session_ctx->internal->new_session_cb != NULL)) { 2265 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2266 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2267 SSL_SESSION_free(s->session); 2268 } 2269 2270 /* auto flush every 255 connections */ 2271 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2272 ((i & mode) == mode)) { 2273 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2274 s->session_ctx->internal->stats.sess_connect_good : 2275 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2276 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2277 } 2278 } 2279 } 2280 2281 const SSL_METHOD * 2282 SSL_get_ssl_method(SSL *s) 2283 { 2284 return (s->method); 2285 } 2286 2287 int 2288 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2289 { 2290 int (*handshake_func)(SSL *) = NULL; 2291 int ret = 1; 2292 2293 if (s->method == method) 2294 return (ret); 2295 2296 if (s->internal->handshake_func == s->method->internal->ssl_connect) 2297 handshake_func = method->internal->ssl_connect; 2298 else if (s->internal->handshake_func == s->method->internal->ssl_accept) 2299 handshake_func = method->internal->ssl_accept; 2300 2301 if (s->method->internal->version == method->internal->version) { 2302 s->method = method; 2303 } else { 2304 s->method->internal->ssl_free(s); 2305 s->method = method; 2306 ret = s->method->internal->ssl_new(s); 2307 } 2308 s->internal->handshake_func = handshake_func; 2309 2310 return (ret); 2311 } 2312 2313 int 2314 SSL_get_error(const SSL *s, int i) 2315 { 2316 int reason; 2317 unsigned long l; 2318 BIO *bio; 2319 2320 if (i > 0) 2321 return (SSL_ERROR_NONE); 2322 2323 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2324 * etc, where we do encode the error */ 2325 if ((l = ERR_peek_error()) != 0) { 2326 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2327 return (SSL_ERROR_SYSCALL); 2328 else 2329 return (SSL_ERROR_SSL); 2330 } 2331 2332 if ((i < 0) && SSL_want_read(s)) { 2333 bio = SSL_get_rbio(s); 2334 if (BIO_should_read(bio)) { 2335 return (SSL_ERROR_WANT_READ); 2336 } else if (BIO_should_write(bio)) { 2337 /* 2338 * This one doesn't make too much sense... We never 2339 * try to write to the rbio, and an application 2340 * program where rbio and wbio are separate couldn't 2341 * even know what it should wait for. However if we 2342 * ever set s->internal->rwstate incorrectly (so that we have 2343 * SSL_want_read(s) instead of SSL_want_write(s)) 2344 * and rbio and wbio *are* the same, this test works 2345 * around that bug; so it might be safer to keep it. 2346 */ 2347 return (SSL_ERROR_WANT_WRITE); 2348 } else if (BIO_should_io_special(bio)) { 2349 reason = BIO_get_retry_reason(bio); 2350 if (reason == BIO_RR_CONNECT) 2351 return (SSL_ERROR_WANT_CONNECT); 2352 else if (reason == BIO_RR_ACCEPT) 2353 return (SSL_ERROR_WANT_ACCEPT); 2354 else 2355 return (SSL_ERROR_SYSCALL); /* unknown */ 2356 } 2357 } 2358 2359 if ((i < 0) && SSL_want_write(s)) { 2360 bio = SSL_get_wbio(s); 2361 if (BIO_should_write(bio)) { 2362 return (SSL_ERROR_WANT_WRITE); 2363 } else if (BIO_should_read(bio)) { 2364 /* 2365 * See above (SSL_want_read(s) with 2366 * BIO_should_write(bio)) 2367 */ 2368 return (SSL_ERROR_WANT_READ); 2369 } else if (BIO_should_io_special(bio)) { 2370 reason = BIO_get_retry_reason(bio); 2371 if (reason == BIO_RR_CONNECT) 2372 return (SSL_ERROR_WANT_CONNECT); 2373 else if (reason == BIO_RR_ACCEPT) 2374 return (SSL_ERROR_WANT_ACCEPT); 2375 else 2376 return (SSL_ERROR_SYSCALL); 2377 } 2378 } 2379 if ((i < 0) && SSL_want_x509_lookup(s)) { 2380 return (SSL_ERROR_WANT_X509_LOOKUP); 2381 } 2382 2383 if (i == 0) { 2384 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2385 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2386 return (SSL_ERROR_ZERO_RETURN); 2387 } 2388 return (SSL_ERROR_SYSCALL); 2389 } 2390 2391 int 2392 SSL_do_handshake(SSL *s) 2393 { 2394 int ret = 1; 2395 2396 if (s->internal->handshake_func == NULL) { 2397 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2398 return (-1); 2399 } 2400 2401 s->method->internal->ssl_renegotiate_check(s); 2402 2403 if (SSL_in_init(s) || SSL_in_before(s)) { 2404 ret = s->internal->handshake_func(s); 2405 } 2406 return (ret); 2407 } 2408 2409 /* 2410 * For the next 2 functions, SSL_clear() sets shutdown and so 2411 * one of these calls will reset it 2412 */ 2413 void 2414 SSL_set_accept_state(SSL *s) 2415 { 2416 s->server = 1; 2417 s->internal->shutdown = 0; 2418 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2419 s->internal->handshake_func = s->method->internal->ssl_accept; 2420 ssl_clear_cipher_state(s); 2421 } 2422 2423 void 2424 SSL_set_connect_state(SSL *s) 2425 { 2426 s->server = 0; 2427 s->internal->shutdown = 0; 2428 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2429 s->internal->handshake_func = s->method->internal->ssl_connect; 2430 ssl_clear_cipher_state(s); 2431 } 2432 2433 int 2434 ssl_undefined_function(SSL *s) 2435 { 2436 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2437 return (0); 2438 } 2439 2440 int 2441 ssl_undefined_void_function(void) 2442 { 2443 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2444 return (0); 2445 } 2446 2447 int 2448 ssl_undefined_const_function(const SSL *s) 2449 { 2450 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2451 return (0); 2452 } 2453 2454 const char * 2455 ssl_version_string(int ver) 2456 { 2457 switch (ver) { 2458 case TLS1_VERSION: 2459 return (SSL_TXT_TLSV1); 2460 case TLS1_1_VERSION: 2461 return (SSL_TXT_TLSV1_1); 2462 case TLS1_2_VERSION: 2463 return (SSL_TXT_TLSV1_2); 2464 case TLS1_3_VERSION: 2465 return (SSL_TXT_TLSV1_3); 2466 case DTLS1_VERSION: 2467 return (SSL_TXT_DTLS1); 2468 case DTLS1_2_VERSION: 2469 return (SSL_TXT_DTLS1_2); 2470 default: 2471 return ("unknown"); 2472 } 2473 } 2474 2475 const char * 2476 SSL_get_version(const SSL *s) 2477 { 2478 return ssl_version_string(s->version); 2479 } 2480 2481 SSL * 2482 SSL_dup(SSL *s) 2483 { 2484 STACK_OF(X509_NAME) *sk; 2485 X509_NAME *xn; 2486 SSL *ret; 2487 int i; 2488 2489 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2490 goto err; 2491 2492 ret->version = s->version; 2493 ret->method = s->method; 2494 2495 if (s->session != NULL) { 2496 if (!SSL_copy_session_id(ret, s)) 2497 goto err; 2498 } else { 2499 /* 2500 * No session has been established yet, so we have to expect 2501 * that s->cert or ret->cert will be changed later -- 2502 * they should not both point to the same object, 2503 * and thus we can't use SSL_copy_session_id. 2504 */ 2505 2506 ret->method->internal->ssl_free(ret); 2507 ret->method = s->method; 2508 ret->method->internal->ssl_new(ret); 2509 2510 ssl_cert_free(ret->cert); 2511 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2512 goto err; 2513 2514 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2515 s->sid_ctx_length)) 2516 goto err; 2517 } 2518 2519 ret->internal->options = s->internal->options; 2520 ret->internal->mode = s->internal->mode; 2521 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2522 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2523 ret->internal->msg_callback = s->internal->msg_callback; 2524 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2525 SSL_set_verify(ret, SSL_get_verify_mode(s), 2526 SSL_get_verify_callback(s)); 2527 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2528 ret->internal->generate_session_id = s->internal->generate_session_id; 2529 2530 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2531 2532 ret->internal->debug = s->internal->debug; 2533 2534 /* copy app data, a little dangerous perhaps */ 2535 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2536 &ret->internal->ex_data, &s->internal->ex_data)) 2537 goto err; 2538 2539 /* setup rbio, and wbio */ 2540 if (s->rbio != NULL) { 2541 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2542 goto err; 2543 } 2544 if (s->wbio != NULL) { 2545 if (s->wbio != s->rbio) { 2546 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2547 goto err; 2548 } else 2549 ret->wbio = ret->rbio; 2550 } 2551 ret->internal->rwstate = s->internal->rwstate; 2552 ret->internal->in_handshake = s->internal->in_handshake; 2553 ret->internal->handshake_func = s->internal->handshake_func; 2554 ret->server = s->server; 2555 ret->internal->renegotiate = s->internal->renegotiate; 2556 ret->internal->new_session = s->internal->new_session; 2557 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2558 ret->internal->shutdown = s->internal->shutdown; 2559 /* SSL_dup does not really work at any state, though */ 2560 S3I(ret)->hs.state = S3I(s)->hs.state; 2561 ret->internal->rstate = s->internal->rstate; 2562 2563 /* 2564 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2565 * ret->init_off 2566 */ 2567 ret->internal->init_num = 0; 2568 2569 ret->internal->hit = s->internal->hit; 2570 2571 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2572 2573 if (s->cipher_list != NULL) { 2574 if ((ret->cipher_list = 2575 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2576 goto err; 2577 } 2578 if (s->internal->cipher_list_tls13 != NULL) { 2579 if ((ret->internal->cipher_list_tls13 = 2580 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2581 goto err; 2582 } 2583 2584 /* Dup the client_CA list */ 2585 if (s->internal->client_CA != NULL) { 2586 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2587 ret->internal->client_CA = sk; 2588 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2589 xn = sk_X509_NAME_value(sk, i); 2590 if (sk_X509_NAME_set(sk, i, 2591 X509_NAME_dup(xn)) == NULL) { 2592 X509_NAME_free(xn); 2593 goto err; 2594 } 2595 } 2596 } 2597 2598 return ret; 2599 err: 2600 SSL_free(ret); 2601 return NULL; 2602 } 2603 2604 void 2605 ssl_clear_cipher_state(SSL *s) 2606 { 2607 ssl_clear_cipher_read_state(s); 2608 ssl_clear_cipher_write_state(s); 2609 } 2610 2611 void 2612 ssl_clear_cipher_read_state(SSL *s) 2613 { 2614 tls12_record_layer_clear_read_state(s->internal->rl); 2615 tls12_record_layer_read_cipher_hash(s->internal->rl, 2616 &s->enc_read_ctx, &s->read_hash); 2617 } 2618 2619 void 2620 ssl_clear_cipher_write_state(SSL *s) 2621 { 2622 tls12_record_layer_clear_write_state(s->internal->rl); 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 return (s->cert->key->x509); 2630 } 2631 2632 /* Fix this function so that it takes an optional type parameter */ 2633 EVP_PKEY * 2634 SSL_get_privatekey(const SSL *s) 2635 { 2636 return (s->cert->key->privatekey); 2637 } 2638 2639 const SSL_CIPHER * 2640 SSL_get_current_cipher(const SSL *s) 2641 { 2642 if ((s->session != NULL) && (s->session->cipher != NULL)) 2643 return (s->session->cipher); 2644 return (NULL); 2645 } 2646 const void * 2647 SSL_get_current_compression(SSL *s) 2648 { 2649 return (NULL); 2650 } 2651 2652 const void * 2653 SSL_get_current_expansion(SSL *s) 2654 { 2655 return (NULL); 2656 } 2657 2658 size_t 2659 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2660 { 2661 size_t len = sizeof(s->s3->client_random); 2662 2663 if (out == NULL) 2664 return len; 2665 2666 if (len > max_out) 2667 len = max_out; 2668 2669 memcpy(out, s->s3->client_random, len); 2670 2671 return len; 2672 } 2673 2674 size_t 2675 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2676 { 2677 size_t len = sizeof(s->s3->server_random); 2678 2679 if (out == NULL) 2680 return len; 2681 2682 if (len > max_out) 2683 len = max_out; 2684 2685 memcpy(out, s->s3->server_random, len); 2686 2687 return len; 2688 } 2689 2690 int 2691 ssl_init_wbio_buffer(SSL *s, int push) 2692 { 2693 BIO *bbio; 2694 2695 if (s->bbio == NULL) { 2696 bbio = BIO_new(BIO_f_buffer()); 2697 if (bbio == NULL) 2698 return (0); 2699 s->bbio = bbio; 2700 } else { 2701 bbio = s->bbio; 2702 if (s->bbio == s->wbio) 2703 s->wbio = BIO_pop(s->wbio); 2704 } 2705 (void)BIO_reset(bbio); 2706 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2707 if (!BIO_set_read_buffer_size(bbio, 1)) { 2708 SSLerror(s, ERR_R_BUF_LIB); 2709 return (0); 2710 } 2711 if (push) { 2712 if (s->wbio != bbio) 2713 s->wbio = BIO_push(bbio, s->wbio); 2714 } else { 2715 if (s->wbio == bbio) 2716 s->wbio = BIO_pop(bbio); 2717 } 2718 return (1); 2719 } 2720 2721 void 2722 ssl_free_wbio_buffer(SSL *s) 2723 { 2724 if (s == NULL) 2725 return; 2726 2727 if (s->bbio == NULL) 2728 return; 2729 2730 if (s->bbio == s->wbio) { 2731 /* remove buffering */ 2732 s->wbio = BIO_pop(s->wbio); 2733 } 2734 BIO_free(s->bbio); 2735 s->bbio = NULL; 2736 } 2737 2738 void 2739 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2740 { 2741 ctx->internal->quiet_shutdown = mode; 2742 } 2743 2744 int 2745 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2746 { 2747 return (ctx->internal->quiet_shutdown); 2748 } 2749 2750 void 2751 SSL_set_quiet_shutdown(SSL *s, int mode) 2752 { 2753 s->internal->quiet_shutdown = mode; 2754 } 2755 2756 int 2757 SSL_get_quiet_shutdown(const SSL *s) 2758 { 2759 return (s->internal->quiet_shutdown); 2760 } 2761 2762 void 2763 SSL_set_shutdown(SSL *s, int mode) 2764 { 2765 s->internal->shutdown = mode; 2766 } 2767 2768 int 2769 SSL_get_shutdown(const SSL *s) 2770 { 2771 return (s->internal->shutdown); 2772 } 2773 2774 int 2775 SSL_version(const SSL *s) 2776 { 2777 return (s->version); 2778 } 2779 2780 SSL_CTX * 2781 SSL_get_SSL_CTX(const SSL *ssl) 2782 { 2783 return (ssl->ctx); 2784 } 2785 2786 SSL_CTX * 2787 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2788 { 2789 CERT *new_cert; 2790 2791 if (ctx == NULL) 2792 ctx = ssl->initial_ctx; 2793 if (ssl->ctx == ctx) 2794 return (ssl->ctx); 2795 2796 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2797 return NULL; 2798 ssl_cert_free(ssl->cert); 2799 ssl->cert = new_cert; 2800 2801 SSL_CTX_up_ref(ctx); 2802 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2803 ssl->ctx = ctx; 2804 2805 return (ssl->ctx); 2806 } 2807 2808 int 2809 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2810 { 2811 return (X509_STORE_set_default_paths(ctx->cert_store)); 2812 } 2813 2814 int 2815 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2816 const char *CApath) 2817 { 2818 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2819 } 2820 2821 int 2822 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2823 { 2824 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2825 } 2826 2827 void 2828 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2829 { 2830 ssl->internal->info_callback = cb; 2831 } 2832 2833 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2834 { 2835 return (ssl->internal->info_callback); 2836 } 2837 2838 int 2839 SSL_state(const SSL *ssl) 2840 { 2841 return (S3I(ssl)->hs.state); 2842 } 2843 2844 void 2845 SSL_set_state(SSL *ssl, int state) 2846 { 2847 S3I(ssl)->hs.state = state; 2848 } 2849 2850 void 2851 SSL_set_verify_result(SSL *ssl, long arg) 2852 { 2853 ssl->verify_result = arg; 2854 } 2855 2856 long 2857 SSL_get_verify_result(const SSL *ssl) 2858 { 2859 return (ssl->verify_result); 2860 } 2861 2862 int 2863 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2864 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2865 { 2866 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2867 new_func, dup_func, free_func)); 2868 } 2869 2870 int 2871 SSL_set_ex_data(SSL *s, int idx, void *arg) 2872 { 2873 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2874 } 2875 2876 void * 2877 SSL_get_ex_data(const SSL *s, int idx) 2878 { 2879 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2880 } 2881 2882 int 2883 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2884 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2885 { 2886 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2887 new_func, dup_func, free_func)); 2888 } 2889 2890 int 2891 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2892 { 2893 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2894 } 2895 2896 void * 2897 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2898 { 2899 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2900 } 2901 2902 int 2903 ssl_ok(SSL *s) 2904 { 2905 return (1); 2906 } 2907 2908 X509_STORE * 2909 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2910 { 2911 return (ctx->cert_store); 2912 } 2913 2914 void 2915 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2916 { 2917 X509_STORE_free(ctx->cert_store); 2918 ctx->cert_store = store; 2919 } 2920 2921 X509 * 2922 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2923 { 2924 if (ctx->internal->cert == NULL) 2925 return NULL; 2926 2927 return ctx->internal->cert->key->x509; 2928 } 2929 2930 int 2931 SSL_want(const SSL *s) 2932 { 2933 return (s->internal->rwstate); 2934 } 2935 2936 void 2937 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2938 int keylength)) 2939 { 2940 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2941 } 2942 2943 void 2944 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2945 int keylength)) 2946 { 2947 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2948 } 2949 2950 void 2951 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2952 int keylength)) 2953 { 2954 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2955 } 2956 2957 void 2958 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2959 int keylength)) 2960 { 2961 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2962 } 2963 2964 void 2965 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2966 int is_export, int keylength)) 2967 { 2968 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2969 (void (*)(void))ecdh); 2970 } 2971 2972 void 2973 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2974 int keylength)) 2975 { 2976 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2977 } 2978 2979 2980 void 2981 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2982 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2983 { 2984 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2985 (void (*)(void))cb); 2986 } 2987 2988 void 2989 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2990 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2991 { 2992 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2993 } 2994 2995 void 2996 SSL_set_debug(SSL *s, int debug) 2997 { 2998 s->internal->debug = debug; 2999 } 3000 3001 int 3002 SSL_cache_hit(SSL *s) 3003 { 3004 return (s->internal->hit); 3005 } 3006 3007 int 3008 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3009 { 3010 return ctx->internal->min_proto_version; 3011 } 3012 3013 int 3014 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3015 { 3016 return ssl_version_set_min(ctx->method, version, 3017 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3018 &ctx->internal->min_proto_version); 3019 } 3020 3021 int 3022 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3023 { 3024 return ctx->internal->max_proto_version; 3025 } 3026 3027 int 3028 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3029 { 3030 return ssl_version_set_max(ctx->method, version, 3031 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3032 &ctx->internal->max_proto_version); 3033 } 3034 3035 int 3036 SSL_get_min_proto_version(SSL *ssl) 3037 { 3038 return ssl->internal->min_proto_version; 3039 } 3040 3041 int 3042 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3043 { 3044 return ssl_version_set_min(ssl->method, version, 3045 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3046 &ssl->internal->min_proto_version); 3047 } 3048 int 3049 SSL_get_max_proto_version(SSL *ssl) 3050 { 3051 return ssl->internal->max_proto_version; 3052 } 3053 3054 int 3055 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3056 { 3057 return ssl_version_set_max(ssl->method, version, 3058 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3059 &ssl->internal->max_proto_version); 3060 } 3061 3062 const SSL_METHOD * 3063 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3064 { 3065 return ctx->method; 3066 } 3067 3068 static int 3069 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3070 { 3071 SSL_CIPHER const *a = a_; 3072 SSL_CIPHER const *b = b_; 3073 return ssl_cipher_id_cmp(a, b); 3074 } 3075 3076 SSL_CIPHER * 3077 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3078 { 3079 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3080 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3081 } 3082