1 /* $OpenBSD: ssl_lib.c,v 1.255 2021/03/29 16:57:38 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 "ssl_locl.h" 150 151 #include <openssl/bn.h> 152 #include <openssl/dh.h> 153 #include <openssl/lhash.h> 154 #include <openssl/objects.h> 155 #include <openssl/ocsp.h> 156 #include <openssl/x509v3.h> 157 158 #ifndef OPENSSL_NO_ENGINE 159 #include <openssl/engine.h> 160 #endif 161 162 #include "bytestring.h" 163 #include "ssl_sigalgs.h" 164 165 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 166 167 int 168 SSL_clear(SSL *s) 169 { 170 if (s->method == NULL) { 171 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 172 return (0); 173 } 174 175 if (ssl_clear_bad_session(s)) { 176 SSL_SESSION_free(s->session); 177 s->session = NULL; 178 } 179 180 s->error = 0; 181 s->internal->hit = 0; 182 s->internal->shutdown = 0; 183 184 if (s->internal->renegotiate) { 185 SSLerror(s, ERR_R_INTERNAL_ERROR); 186 return (0); 187 } 188 189 s->version = s->method->internal->version; 190 s->client_version = s->version; 191 s->internal->rwstate = SSL_NOTHING; 192 s->internal->rstate = SSL_ST_READ_HEADER; 193 194 tls13_ctx_free(s->internal->tls13); 195 s->internal->tls13 = NULL; 196 197 ssl3_release_init_buffer(s); 198 199 ssl_clear_cipher_state(s); 200 201 s->internal->first_packet = 0; 202 203 /* 204 * Check to see if we were changed into a different method, if 205 * so, revert back if we are not doing session-id reuse. 206 */ 207 if (!s->internal->in_handshake && (s->session == NULL) && 208 (s->method != s->ctx->method)) { 209 s->method->internal->ssl_free(s); 210 s->method = s->ctx->method; 211 if (!s->method->internal->ssl_new(s)) 212 return (0); 213 } else 214 s->method->internal->ssl_clear(s); 215 216 return (1); 217 } 218 219 /* Used to change an SSL_CTXs default SSL method type */ 220 int 221 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 222 { 223 STACK_OF(SSL_CIPHER) *ciphers; 224 225 ctx->method = meth; 226 227 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 228 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 229 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 230 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 231 return (0); 232 } 233 return (1); 234 } 235 236 SSL * 237 SSL_new(SSL_CTX *ctx) 238 { 239 SSL *s; 240 241 if (ctx == NULL) { 242 SSLerrorx(SSL_R_NULL_SSL_CTX); 243 return (NULL); 244 } 245 if (ctx->method == NULL) { 246 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 247 return (NULL); 248 } 249 250 if ((s = calloc(1, sizeof(*s))) == NULL) 251 goto err; 252 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 253 goto err; 254 255 s->internal->min_tls_version = ctx->internal->min_tls_version; 256 s->internal->max_tls_version = ctx->internal->max_tls_version; 257 s->internal->min_proto_version = ctx->internal->min_proto_version; 258 s->internal->max_proto_version = ctx->internal->max_proto_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 ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 265 goto err; 266 267 s->internal->read_ahead = ctx->internal->read_ahead; 268 s->internal->msg_callback = ctx->internal->msg_callback; 269 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 270 s->verify_mode = ctx->verify_mode; 271 s->sid_ctx_length = ctx->sid_ctx_length; 272 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 273 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 274 s->internal->verify_callback = ctx->internal->default_verify_callback; 275 s->internal->generate_session_id = ctx->internal->generate_session_id; 276 277 s->param = X509_VERIFY_PARAM_new(); 278 if (!s->param) 279 goto err; 280 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 281 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 282 s->max_send_fragment = ctx->internal->max_send_fragment; 283 284 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 285 s->ctx = ctx; 286 s->internal->tlsext_debug_cb = 0; 287 s->internal->tlsext_debug_arg = NULL; 288 s->internal->tlsext_ticket_expected = 0; 289 s->tlsext_status_type = -1; 290 s->internal->tlsext_status_expected = 0; 291 s->internal->tlsext_ocsp_ids = NULL; 292 s->internal->tlsext_ocsp_exts = NULL; 293 s->internal->tlsext_ocsp_resp = NULL; 294 s->internal->tlsext_ocsp_resp_len = 0; 295 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 296 s->initial_ctx = ctx; 297 298 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 299 s->internal->tlsext_ecpointformatlist = 300 calloc(ctx->internal->tlsext_ecpointformatlist_length, 301 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 302 if (s->internal->tlsext_ecpointformatlist == NULL) 303 goto err; 304 memcpy(s->internal->tlsext_ecpointformatlist, 305 ctx->internal->tlsext_ecpointformatlist, 306 ctx->internal->tlsext_ecpointformatlist_length * 307 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 308 s->internal->tlsext_ecpointformatlist_length = 309 ctx->internal->tlsext_ecpointformatlist_length; 310 } 311 if (ctx->internal->tlsext_supportedgroups != NULL) { 312 s->internal->tlsext_supportedgroups = 313 calloc(ctx->internal->tlsext_supportedgroups_length, 314 sizeof(ctx->internal->tlsext_supportedgroups[0])); 315 if (s->internal->tlsext_supportedgroups == NULL) 316 goto err; 317 memcpy(s->internal->tlsext_supportedgroups, 318 ctx->internal->tlsext_supportedgroups, 319 ctx->internal->tlsext_supportedgroups_length * 320 sizeof(ctx->internal->tlsext_supportedgroups[0])); 321 s->internal->tlsext_supportedgroups_length = 322 ctx->internal->tlsext_supportedgroups_length; 323 } 324 325 if (s->ctx->internal->alpn_client_proto_list != NULL) { 326 s->internal->alpn_client_proto_list = 327 malloc(s->ctx->internal->alpn_client_proto_list_len); 328 if (s->internal->alpn_client_proto_list == NULL) 329 goto err; 330 memcpy(s->internal->alpn_client_proto_list, 331 s->ctx->internal->alpn_client_proto_list, 332 s->ctx->internal->alpn_client_proto_list_len); 333 s->internal->alpn_client_proto_list_len = 334 s->ctx->internal->alpn_client_proto_list_len; 335 } 336 337 s->verify_result = X509_V_OK; 338 339 s->method = ctx->method; 340 341 if (!s->method->internal->ssl_new(s)) 342 goto err; 343 344 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 345 goto err; 346 347 s->references = 1; 348 s->server = ctx->method->internal->server; 349 350 SSL_clear(s); 351 352 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 353 354 return (s); 355 356 err: 357 SSL_free(s); 358 SSLerrorx(ERR_R_MALLOC_FAILURE); 359 return (NULL); 360 } 361 362 int 363 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 364 unsigned int sid_ctx_len) 365 { 366 if (sid_ctx_len > sizeof ctx->sid_ctx) { 367 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 368 return (0); 369 } 370 ctx->sid_ctx_length = sid_ctx_len; 371 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 372 373 return (1); 374 } 375 376 int 377 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 378 unsigned int sid_ctx_len) 379 { 380 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 381 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 382 return (0); 383 } 384 ssl->sid_ctx_length = sid_ctx_len; 385 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 386 387 return (1); 388 } 389 390 int 391 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 392 { 393 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 394 ctx->internal->generate_session_id = cb; 395 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 396 return (1); 397 } 398 399 int 400 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 401 { 402 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 403 ssl->internal->generate_session_id = cb; 404 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 405 return (1); 406 } 407 408 int 409 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 410 unsigned int id_len) 411 { 412 /* 413 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 414 * shows how we can "construct" a session to give us the desired 415 * check - ie. to find if there's a session in the hash table 416 * that would conflict with any new session built out of this 417 * id/id_len and the ssl_version in use by this SSL. 418 */ 419 SSL_SESSION r, *p; 420 421 if (id_len > sizeof r.session_id) 422 return (0); 423 424 r.ssl_version = ssl->version; 425 r.session_id_length = id_len; 426 memcpy(r.session_id, id, id_len); 427 428 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 429 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 430 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 431 return (p != NULL); 432 } 433 434 int 435 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 436 { 437 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 438 } 439 440 int 441 SSL_set_purpose(SSL *s, int purpose) 442 { 443 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 444 } 445 446 int 447 SSL_CTX_set_trust(SSL_CTX *s, int trust) 448 { 449 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 450 } 451 452 int 453 SSL_set_trust(SSL *s, int trust) 454 { 455 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 456 } 457 458 int 459 SSL_set1_host(SSL *s, const char *hostname) 460 { 461 struct in_addr ina; 462 struct in6_addr in6a; 463 464 if (hostname != NULL && *hostname != '\0' && 465 (inet_pton(AF_INET, hostname, &ina) == 1 || 466 inet_pton(AF_INET6, hostname, &in6a) == 1)) 467 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 468 else 469 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 470 } 471 472 void 473 SSL_set_hostflags(SSL *s, unsigned int flags) 474 { 475 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 476 } 477 478 const char * 479 SSL_get0_peername(SSL *s) 480 { 481 return X509_VERIFY_PARAM_get0_peername(s->param); 482 } 483 484 X509_VERIFY_PARAM * 485 SSL_CTX_get0_param(SSL_CTX *ctx) 486 { 487 return (ctx->param); 488 } 489 490 int 491 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 492 { 493 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 494 } 495 496 X509_VERIFY_PARAM * 497 SSL_get0_param(SSL *ssl) 498 { 499 return (ssl->param); 500 } 501 502 int 503 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 504 { 505 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 506 } 507 508 void 509 SSL_free(SSL *s) 510 { 511 int i; 512 513 if (s == NULL) 514 return; 515 516 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 517 if (i > 0) 518 return; 519 520 X509_VERIFY_PARAM_free(s->param); 521 522 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 523 524 if (s->bbio != NULL) { 525 /* If the buffering BIO is in place, pop it off */ 526 if (s->bbio == s->wbio) { 527 s->wbio = BIO_pop(s->wbio); 528 } 529 BIO_free(s->bbio); 530 s->bbio = NULL; 531 } 532 533 if (s->rbio != s->wbio) 534 BIO_free_all(s->rbio); 535 BIO_free_all(s->wbio); 536 537 tls13_ctx_free(s->internal->tls13); 538 539 ssl3_release_init_buffer(s); 540 541 sk_SSL_CIPHER_free(s->cipher_list); 542 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 543 544 /* Make the next call work :-) */ 545 if (s->session != NULL) { 546 ssl_clear_bad_session(s); 547 SSL_SESSION_free(s->session); 548 } 549 550 ssl_clear_cipher_state(s); 551 552 ssl_cert_free(s->cert); 553 554 free(s->tlsext_hostname); 555 SSL_CTX_free(s->initial_ctx); 556 557 free(s->internal->tlsext_ecpointformatlist); 558 free(s->internal->tlsext_supportedgroups); 559 560 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 561 X509_EXTENSION_free); 562 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 563 free(s->internal->tlsext_ocsp_resp); 564 565 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 566 567 if (s->method != NULL) 568 s->method->internal->ssl_free(s); 569 570 SSL_CTX_free(s->ctx); 571 572 free(s->internal->alpn_client_proto_list); 573 574 #ifndef OPENSSL_NO_SRTP 575 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 576 #endif 577 578 tls12_record_layer_free(s->internal->rl); 579 580 free(s->internal); 581 free(s); 582 } 583 584 int 585 SSL_up_ref(SSL *s) 586 { 587 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 588 return (refs > 1) ? 1 : 0; 589 } 590 591 void 592 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 593 { 594 /* If the output buffering BIO is still in place, remove it */ 595 if (s->bbio != NULL) { 596 if (s->wbio == s->bbio) { 597 s->wbio = s->wbio->next_bio; 598 s->bbio->next_bio = NULL; 599 } 600 } 601 602 if (s->rbio != rbio && s->rbio != s->wbio) 603 BIO_free_all(s->rbio); 604 if (s->wbio != wbio) 605 BIO_free_all(s->wbio); 606 s->rbio = rbio; 607 s->wbio = wbio; 608 } 609 610 BIO * 611 SSL_get_rbio(const SSL *s) 612 { 613 return (s->rbio); 614 } 615 616 BIO * 617 SSL_get_wbio(const SSL *s) 618 { 619 return (s->wbio); 620 } 621 622 int 623 SSL_get_fd(const SSL *s) 624 { 625 return (SSL_get_rfd(s)); 626 } 627 628 int 629 SSL_get_rfd(const SSL *s) 630 { 631 int ret = -1; 632 BIO *b, *r; 633 634 b = SSL_get_rbio(s); 635 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 636 if (r != NULL) 637 BIO_get_fd(r, &ret); 638 return (ret); 639 } 640 641 int 642 SSL_get_wfd(const SSL *s) 643 { 644 int ret = -1; 645 BIO *b, *r; 646 647 b = SSL_get_wbio(s); 648 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 649 if (r != NULL) 650 BIO_get_fd(r, &ret); 651 return (ret); 652 } 653 654 int 655 SSL_set_fd(SSL *s, int fd) 656 { 657 int ret = 0; 658 BIO *bio = NULL; 659 660 bio = BIO_new(BIO_s_socket()); 661 662 if (bio == NULL) { 663 SSLerror(s, ERR_R_BUF_LIB); 664 goto err; 665 } 666 BIO_set_fd(bio, fd, BIO_NOCLOSE); 667 SSL_set_bio(s, bio, bio); 668 ret = 1; 669 err: 670 return (ret); 671 } 672 673 int 674 SSL_set_wfd(SSL *s, int fd) 675 { 676 int ret = 0; 677 BIO *bio = NULL; 678 679 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 680 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 681 bio = BIO_new(BIO_s_socket()); 682 683 if (bio == NULL) { 684 SSLerror(s, ERR_R_BUF_LIB); 685 goto err; 686 } 687 BIO_set_fd(bio, fd, BIO_NOCLOSE); 688 SSL_set_bio(s, SSL_get_rbio(s), bio); 689 } else 690 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 691 ret = 1; 692 err: 693 return (ret); 694 } 695 696 int 697 SSL_set_rfd(SSL *s, int fd) 698 { 699 int ret = 0; 700 BIO *bio = NULL; 701 702 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 703 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 704 bio = BIO_new(BIO_s_socket()); 705 706 if (bio == NULL) { 707 SSLerror(s, ERR_R_BUF_LIB); 708 goto err; 709 } 710 BIO_set_fd(bio, fd, BIO_NOCLOSE); 711 SSL_set_bio(s, bio, SSL_get_wbio(s)); 712 } else 713 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 714 ret = 1; 715 err: 716 return (ret); 717 } 718 719 720 /* return length of latest Finished message we sent, copy to 'buf' */ 721 size_t 722 SSL_get_finished(const SSL *s, void *buf, size_t count) 723 { 724 size_t ret; 725 726 ret = S3I(s)->hs.finished_len; 727 if (count > ret) 728 count = ret; 729 memcpy(buf, S3I(s)->hs.finished, count); 730 return (ret); 731 } 732 733 /* return length of latest Finished message we expected, copy to 'buf' */ 734 size_t 735 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 736 { 737 size_t ret; 738 739 ret = S3I(s)->hs.peer_finished_len; 740 if (count > ret) 741 count = ret; 742 memcpy(buf, S3I(s)->hs.peer_finished, count); 743 return (ret); 744 } 745 746 747 int 748 SSL_get_verify_mode(const SSL *s) 749 { 750 return (s->verify_mode); 751 } 752 753 int 754 SSL_get_verify_depth(const SSL *s) 755 { 756 return (X509_VERIFY_PARAM_get_depth(s->param)); 757 } 758 759 int 760 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 761 { 762 return (s->internal->verify_callback); 763 } 764 765 int 766 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 767 { 768 return (ctx->verify_mode); 769 } 770 771 int 772 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 773 { 774 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 775 } 776 777 int 778 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 779 { 780 return (ctx->internal->default_verify_callback); 781 } 782 783 void 784 SSL_set_verify(SSL *s, int mode, 785 int (*callback)(int ok, X509_STORE_CTX *ctx)) 786 { 787 s->verify_mode = mode; 788 if (callback != NULL) 789 s->internal->verify_callback = callback; 790 } 791 792 void 793 SSL_set_verify_depth(SSL *s, int depth) 794 { 795 X509_VERIFY_PARAM_set_depth(s->param, depth); 796 } 797 798 void 799 SSL_set_read_ahead(SSL *s, int yes) 800 { 801 s->internal->read_ahead = yes; 802 } 803 804 int 805 SSL_get_read_ahead(const SSL *s) 806 { 807 return (s->internal->read_ahead); 808 } 809 810 int 811 SSL_pending(const SSL *s) 812 { 813 return (s->method->internal->ssl_pending(s)); 814 } 815 816 X509 * 817 SSL_get_peer_certificate(const SSL *s) 818 { 819 X509 *r; 820 821 if ((s == NULL) || (s->session == NULL)) 822 r = NULL; 823 else 824 r = s->session->peer; 825 826 if (r == NULL) 827 return (r); 828 829 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 830 831 return (r); 832 } 833 834 STACK_OF(X509) * 835 SSL_get_peer_cert_chain(const SSL *s) 836 { 837 STACK_OF(X509) *r; 838 839 if ((s == NULL) || (s->session == NULL) || 840 (SSI(s)->sess_cert == NULL)) 841 r = NULL; 842 else 843 r = SSI(s)->sess_cert->cert_chain; 844 845 /* 846 * If we are a client, cert_chain includes the peer's own 847 * certificate; 848 * if we are a server, it does not. 849 */ 850 return (r); 851 } 852 853 /* 854 * Now in theory, since the calling process own 't' it should be safe to 855 * modify. We need to be able to read f without being hassled 856 */ 857 int 858 SSL_copy_session_id(SSL *t, const SSL *f) 859 { 860 CERT *tmp; 861 862 /* Do we need to do SSL locking? */ 863 if (!SSL_set_session(t, SSL_get_session(f))) 864 return 0; 865 866 /* What if we are set up for one protocol but want to talk another? */ 867 if (t->method != f->method) { 868 t->method->internal->ssl_free(t); 869 t->method = f->method; 870 if (!t->method->internal->ssl_new(t)) 871 return 0; 872 } 873 874 tmp = t->cert; 875 if (f->cert != NULL) { 876 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 877 t->cert = f->cert; 878 } else 879 t->cert = NULL; 880 ssl_cert_free(tmp); 881 882 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 883 return 0; 884 885 return 1; 886 } 887 888 /* Fix this so it checks all the valid key/cert options */ 889 int 890 SSL_CTX_check_private_key(const SSL_CTX *ctx) 891 { 892 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 893 (ctx->internal->cert->key->x509 == NULL)) { 894 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 895 return (0); 896 } 897 if (ctx->internal->cert->key->privatekey == NULL) { 898 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 899 return (0); 900 } 901 return (X509_check_private_key(ctx->internal->cert->key->x509, 902 ctx->internal->cert->key->privatekey)); 903 } 904 905 /* Fix this function so that it takes an optional type parameter */ 906 int 907 SSL_check_private_key(const SSL *ssl) 908 { 909 if (ssl == NULL) { 910 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 911 return (0); 912 } 913 if (ssl->cert == NULL) { 914 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return (0); 916 } 917 if (ssl->cert->key->x509 == NULL) { 918 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 919 return (0); 920 } 921 if (ssl->cert->key->privatekey == NULL) { 922 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 923 return (0); 924 } 925 return (X509_check_private_key(ssl->cert->key->x509, 926 ssl->cert->key->privatekey)); 927 } 928 929 int 930 SSL_accept(SSL *s) 931 { 932 if (s->internal->handshake_func == NULL) 933 SSL_set_accept_state(s); /* Not properly initialized yet */ 934 935 return (s->method->internal->ssl_accept(s)); 936 } 937 938 int 939 SSL_connect(SSL *s) 940 { 941 if (s->internal->handshake_func == NULL) 942 SSL_set_connect_state(s); /* Not properly initialized yet */ 943 944 return (s->method->internal->ssl_connect(s)); 945 } 946 947 int 948 SSL_is_dtls(const SSL *s) 949 { 950 return s->method->internal->dtls; 951 } 952 953 int 954 SSL_is_server(const SSL *s) 955 { 956 return s->server; 957 } 958 959 static long 960 ssl_get_default_timeout() 961 { 962 /* 963 * 2 hours, the 24 hours mentioned in the TLSv1 spec 964 * is way too long for http, the cache would over fill. 965 */ 966 return (2 * 60 * 60); 967 } 968 969 long 970 SSL_get_default_timeout(const SSL *s) 971 { 972 return (ssl_get_default_timeout()); 973 } 974 975 int 976 SSL_read(SSL *s, void *buf, int num) 977 { 978 if (s->internal->handshake_func == NULL) { 979 SSLerror(s, SSL_R_UNINITIALIZED); 980 return (-1); 981 } 982 983 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 984 s->internal->rwstate = SSL_NOTHING; 985 return (0); 986 } 987 return ssl3_read(s, buf, num); 988 } 989 990 int 991 SSL_peek(SSL *s, void *buf, int num) 992 { 993 if (s->internal->handshake_func == NULL) { 994 SSLerror(s, SSL_R_UNINITIALIZED); 995 return (-1); 996 } 997 998 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 999 return (0); 1000 } 1001 return ssl3_peek(s, buf, num); 1002 } 1003 1004 int 1005 SSL_write(SSL *s, const void *buf, int num) 1006 { 1007 if (s->internal->handshake_func == NULL) { 1008 SSLerror(s, SSL_R_UNINITIALIZED); 1009 return (-1); 1010 } 1011 1012 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1013 s->internal->rwstate = SSL_NOTHING; 1014 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1015 return (-1); 1016 } 1017 return ssl3_write(s, buf, num); 1018 } 1019 1020 uint32_t 1021 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1022 { 1023 return 0; 1024 } 1025 1026 int 1027 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1028 { 1029 return 1; 1030 } 1031 1032 uint32_t 1033 SSL_get_max_early_data(const SSL *s) 1034 { 1035 return 0; 1036 } 1037 1038 int 1039 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1040 { 1041 return 1; 1042 } 1043 1044 int 1045 SSL_get_early_data_status(const SSL *s) 1046 { 1047 return SSL_EARLY_DATA_REJECTED; 1048 } 1049 1050 int 1051 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1052 { 1053 *readbytes = 0; 1054 1055 if (!s->server) { 1056 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1057 return SSL_READ_EARLY_DATA_ERROR; 1058 } 1059 1060 return SSL_READ_EARLY_DATA_FINISH; 1061 } 1062 1063 int 1064 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1065 { 1066 *written = 0; 1067 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1068 return 0; 1069 } 1070 1071 int 1072 SSL_shutdown(SSL *s) 1073 { 1074 /* 1075 * Note that this function behaves differently from what one might 1076 * expect. Return values are 0 for no success (yet), 1077 * 1 for success; but calling it once is usually not enough, 1078 * even if blocking I/O is used (see ssl3_shutdown). 1079 */ 1080 1081 if (s->internal->handshake_func == NULL) { 1082 SSLerror(s, SSL_R_UNINITIALIZED); 1083 return (-1); 1084 } 1085 1086 if (s != NULL && !SSL_in_init(s)) 1087 return (s->method->internal->ssl_shutdown(s)); 1088 1089 return (1); 1090 } 1091 1092 int 1093 SSL_renegotiate(SSL *s) 1094 { 1095 if (s->internal->renegotiate == 0) 1096 s->internal->renegotiate = 1; 1097 1098 s->internal->new_session = 1; 1099 1100 return (s->method->internal->ssl_renegotiate(s)); 1101 } 1102 1103 int 1104 SSL_renegotiate_abbreviated(SSL *s) 1105 { 1106 if (s->internal->renegotiate == 0) 1107 s->internal->renegotiate = 1; 1108 1109 s->internal->new_session = 0; 1110 1111 return (s->method->internal->ssl_renegotiate(s)); 1112 } 1113 1114 int 1115 SSL_renegotiate_pending(SSL *s) 1116 { 1117 /* 1118 * Becomes true when negotiation is requested; 1119 * false again once a handshake has finished. 1120 */ 1121 return (s->internal->renegotiate != 0); 1122 } 1123 1124 long 1125 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1126 { 1127 long l; 1128 1129 switch (cmd) { 1130 case SSL_CTRL_GET_READ_AHEAD: 1131 return (s->internal->read_ahead); 1132 case SSL_CTRL_SET_READ_AHEAD: 1133 l = s->internal->read_ahead; 1134 s->internal->read_ahead = larg; 1135 return (l); 1136 1137 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1138 s->internal->msg_callback_arg = parg; 1139 return (1); 1140 1141 case SSL_CTRL_OPTIONS: 1142 return (s->internal->options|=larg); 1143 case SSL_CTRL_CLEAR_OPTIONS: 1144 return (s->internal->options&=~larg); 1145 case SSL_CTRL_MODE: 1146 return (s->internal->mode|=larg); 1147 case SSL_CTRL_CLEAR_MODE: 1148 return (s->internal->mode &=~larg); 1149 case SSL_CTRL_GET_MAX_CERT_LIST: 1150 return (s->internal->max_cert_list); 1151 case SSL_CTRL_SET_MAX_CERT_LIST: 1152 l = s->internal->max_cert_list; 1153 s->internal->max_cert_list = larg; 1154 return (l); 1155 case SSL_CTRL_SET_MTU: 1156 #ifndef OPENSSL_NO_DTLS1 1157 if (larg < (long)dtls1_min_mtu()) 1158 return (0); 1159 #endif 1160 if (SSL_is_dtls(s)) { 1161 D1I(s)->mtu = larg; 1162 return (larg); 1163 } 1164 return (0); 1165 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1166 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1167 return (0); 1168 s->max_send_fragment = larg; 1169 return (1); 1170 case SSL_CTRL_GET_RI_SUPPORT: 1171 if (s->s3) 1172 return (S3I(s)->send_connection_binding); 1173 else return (0); 1174 default: 1175 if (SSL_is_dtls(s)) 1176 return dtls1_ctrl(s, cmd, larg, parg); 1177 return ssl3_ctrl(s, cmd, larg, parg); 1178 } 1179 } 1180 1181 long 1182 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1183 { 1184 switch (cmd) { 1185 case SSL_CTRL_SET_MSG_CALLBACK: 1186 s->internal->msg_callback = (void (*)(int write_p, int version, 1187 int content_type, const void *buf, size_t len, 1188 SSL *ssl, void *arg))(fp); 1189 return (1); 1190 1191 default: 1192 return (ssl3_callback_ctrl(s, cmd, fp)); 1193 } 1194 } 1195 1196 struct lhash_st_SSL_SESSION * 1197 SSL_CTX_sessions(SSL_CTX *ctx) 1198 { 1199 return (ctx->internal->sessions); 1200 } 1201 1202 long 1203 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1204 { 1205 long l; 1206 1207 switch (cmd) { 1208 case SSL_CTRL_GET_READ_AHEAD: 1209 return (ctx->internal->read_ahead); 1210 case SSL_CTRL_SET_READ_AHEAD: 1211 l = ctx->internal->read_ahead; 1212 ctx->internal->read_ahead = larg; 1213 return (l); 1214 1215 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1216 ctx->internal->msg_callback_arg = parg; 1217 return (1); 1218 1219 case SSL_CTRL_GET_MAX_CERT_LIST: 1220 return (ctx->internal->max_cert_list); 1221 case SSL_CTRL_SET_MAX_CERT_LIST: 1222 l = ctx->internal->max_cert_list; 1223 ctx->internal->max_cert_list = larg; 1224 return (l); 1225 1226 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1227 l = ctx->internal->session_cache_size; 1228 ctx->internal->session_cache_size = larg; 1229 return (l); 1230 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1231 return (ctx->internal->session_cache_size); 1232 case SSL_CTRL_SET_SESS_CACHE_MODE: 1233 l = ctx->internal->session_cache_mode; 1234 ctx->internal->session_cache_mode = larg; 1235 return (l); 1236 case SSL_CTRL_GET_SESS_CACHE_MODE: 1237 return (ctx->internal->session_cache_mode); 1238 1239 case SSL_CTRL_SESS_NUMBER: 1240 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1241 case SSL_CTRL_SESS_CONNECT: 1242 return (ctx->internal->stats.sess_connect); 1243 case SSL_CTRL_SESS_CONNECT_GOOD: 1244 return (ctx->internal->stats.sess_connect_good); 1245 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1246 return (ctx->internal->stats.sess_connect_renegotiate); 1247 case SSL_CTRL_SESS_ACCEPT: 1248 return (ctx->internal->stats.sess_accept); 1249 case SSL_CTRL_SESS_ACCEPT_GOOD: 1250 return (ctx->internal->stats.sess_accept_good); 1251 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1252 return (ctx->internal->stats.sess_accept_renegotiate); 1253 case SSL_CTRL_SESS_HIT: 1254 return (ctx->internal->stats.sess_hit); 1255 case SSL_CTRL_SESS_CB_HIT: 1256 return (ctx->internal->stats.sess_cb_hit); 1257 case SSL_CTRL_SESS_MISSES: 1258 return (ctx->internal->stats.sess_miss); 1259 case SSL_CTRL_SESS_TIMEOUTS: 1260 return (ctx->internal->stats.sess_timeout); 1261 case SSL_CTRL_SESS_CACHE_FULL: 1262 return (ctx->internal->stats.sess_cache_full); 1263 case SSL_CTRL_OPTIONS: 1264 return (ctx->internal->options|=larg); 1265 case SSL_CTRL_CLEAR_OPTIONS: 1266 return (ctx->internal->options&=~larg); 1267 case SSL_CTRL_MODE: 1268 return (ctx->internal->mode|=larg); 1269 case SSL_CTRL_CLEAR_MODE: 1270 return (ctx->internal->mode&=~larg); 1271 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1272 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1273 return (0); 1274 ctx->internal->max_send_fragment = larg; 1275 return (1); 1276 default: 1277 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1278 } 1279 } 1280 1281 long 1282 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1283 { 1284 switch (cmd) { 1285 case SSL_CTRL_SET_MSG_CALLBACK: 1286 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1287 int content_type, const void *buf, size_t len, SSL *ssl, 1288 void *arg))(fp); 1289 return (1); 1290 1291 default: 1292 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1293 } 1294 } 1295 1296 int 1297 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1298 { 1299 long l; 1300 1301 l = a->id - b->id; 1302 if (l == 0L) 1303 return (0); 1304 else 1305 return ((l > 0) ? 1:-1); 1306 } 1307 1308 STACK_OF(SSL_CIPHER) * 1309 SSL_get_ciphers(const SSL *s) 1310 { 1311 if (s == NULL) 1312 return (NULL); 1313 if (s->cipher_list != NULL) 1314 return (s->cipher_list); 1315 1316 return (s->ctx->cipher_list); 1317 } 1318 1319 STACK_OF(SSL_CIPHER) * 1320 SSL_get_client_ciphers(const SSL *s) 1321 { 1322 if (s == NULL || s->session == NULL || !s->server) 1323 return NULL; 1324 return s->session->ciphers; 1325 } 1326 1327 STACK_OF(SSL_CIPHER) * 1328 SSL_get1_supported_ciphers(SSL *s) 1329 { 1330 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1331 const SSL_CIPHER *cipher; 1332 uint16_t min_vers, max_vers; 1333 int i; 1334 1335 if (s == NULL) 1336 return NULL; 1337 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1338 return NULL; 1339 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1340 return NULL; 1341 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1342 return NULL; 1343 1344 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1345 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1346 goto err; 1347 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1348 max_vers)) 1349 continue; 1350 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1351 goto err; 1352 } 1353 1354 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1355 return supported_ciphers; 1356 1357 err: 1358 sk_SSL_CIPHER_free(supported_ciphers); 1359 return NULL; 1360 } 1361 1362 /* See if we have any ECC cipher suites. */ 1363 int 1364 ssl_has_ecc_ciphers(SSL *s) 1365 { 1366 STACK_OF(SSL_CIPHER) *ciphers; 1367 unsigned long alg_k, alg_a; 1368 SSL_CIPHER *cipher; 1369 int i; 1370 1371 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1372 return 0; 1373 1374 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1375 cipher = sk_SSL_CIPHER_value(ciphers, i); 1376 1377 alg_k = cipher->algorithm_mkey; 1378 alg_a = cipher->algorithm_auth; 1379 1380 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1381 return 1; 1382 } 1383 1384 return 0; 1385 } 1386 1387 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1388 const char * 1389 SSL_get_cipher_list(const SSL *s, int n) 1390 { 1391 STACK_OF(SSL_CIPHER) *ciphers; 1392 const SSL_CIPHER *cipher; 1393 1394 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1395 return (NULL); 1396 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1397 return (NULL); 1398 1399 return (cipher->name); 1400 } 1401 1402 STACK_OF(SSL_CIPHER) * 1403 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1404 { 1405 if (ctx == NULL) 1406 return NULL; 1407 return ctx->cipher_list; 1408 } 1409 1410 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1411 int 1412 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1413 { 1414 STACK_OF(SSL_CIPHER) *ciphers; 1415 1416 /* 1417 * ssl_create_cipher_list may return an empty stack if it was unable to 1418 * find a cipher matching the given rule string (for example if the 1419 * rule string specifies a cipher which has been disabled). This is not 1420 * an error as far as ssl_create_cipher_list is concerned, and hence 1421 * ctx->cipher_list has been updated. 1422 */ 1423 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1424 ctx->internal->cipher_list_tls13, str); 1425 if (ciphers == NULL) { 1426 return (0); 1427 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1428 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1429 return (0); 1430 } 1431 return (1); 1432 } 1433 1434 int 1435 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1436 { 1437 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1438 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1439 return 0; 1440 } 1441 if (!ssl_merge_cipherlists(ctx->cipher_list, 1442 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1443 return 0; 1444 1445 return 1; 1446 } 1447 1448 /* Specify the ciphers to be used by the SSL. */ 1449 int 1450 SSL_set_cipher_list(SSL *s, const char *str) 1451 { 1452 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1453 1454 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1455 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1456 1457 /* See comment in SSL_CTX_set_cipher_list. */ 1458 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1459 ciphers_tls13, str); 1460 if (ciphers == NULL) { 1461 return (0); 1462 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1463 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1464 return (0); 1465 } 1466 return (1); 1467 } 1468 1469 int 1470 SSL_set_ciphersuites(SSL *s, const char *str) 1471 { 1472 STACK_OF(SSL_CIPHER) *ciphers; 1473 1474 if ((ciphers = s->cipher_list) == NULL) 1475 ciphers = s->ctx->cipher_list; 1476 1477 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1478 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1479 return (0); 1480 } 1481 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1482 &s->cipher_list)) 1483 return 0; 1484 1485 return 1; 1486 } 1487 1488 char * 1489 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1490 { 1491 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1492 const SSL_CIPHER *cipher; 1493 size_t curlen = 0; 1494 char *end; 1495 int i; 1496 1497 if (!s->server || s->session == NULL || len < 2) 1498 return NULL; 1499 1500 if ((client_ciphers = s->session->ciphers) == NULL) 1501 return NULL; 1502 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1503 return NULL; 1504 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1505 sk_SSL_CIPHER_num(server_ciphers) == 0) 1506 return NULL; 1507 1508 buf[0] = '\0'; 1509 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1510 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1511 1512 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1513 continue; 1514 1515 end = buf + curlen; 1516 if (strlcat(buf, cipher->name, len) >= len || 1517 (curlen = strlcat(buf, ":", len)) >= len) { 1518 /* remove truncated cipher from list */ 1519 *end = '\0'; 1520 break; 1521 } 1522 } 1523 /* remove trailing colon */ 1524 if ((end = strrchr(buf, ':')) != NULL) 1525 *end = '\0'; 1526 return buf; 1527 } 1528 1529 /* 1530 * Return a servername extension value if provided in Client Hello, or NULL. 1531 * So far, only host_name types are defined (RFC 3546). 1532 */ 1533 const char * 1534 SSL_get_servername(const SSL *s, const int type) 1535 { 1536 if (type != TLSEXT_NAMETYPE_host_name) 1537 return (NULL); 1538 1539 return (s->session && !s->tlsext_hostname ? 1540 s->session->tlsext_hostname : 1541 s->tlsext_hostname); 1542 } 1543 1544 int 1545 SSL_get_servername_type(const SSL *s) 1546 { 1547 if (s->session && 1548 (!s->tlsext_hostname ? 1549 s->session->tlsext_hostname : s->tlsext_hostname)) 1550 return (TLSEXT_NAMETYPE_host_name); 1551 return (-1); 1552 } 1553 1554 /* 1555 * SSL_select_next_proto implements standard protocol selection. It is 1556 * expected that this function is called from the callback set by 1557 * SSL_CTX_set_alpn_select_cb. 1558 * 1559 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1560 * strings. The length byte itself is not included in the length. A byte 1561 * string of length 0 is invalid. No byte string may be truncated. 1562 * 1563 * It returns either: 1564 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1565 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1566 */ 1567 int 1568 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1569 const unsigned char *server, unsigned int server_len, 1570 const unsigned char *client, unsigned int client_len) 1571 { 1572 unsigned int i, j; 1573 const unsigned char *result; 1574 int status = OPENSSL_NPN_UNSUPPORTED; 1575 1576 /* 1577 * For each protocol in server preference order, 1578 * see if we support it. 1579 */ 1580 for (i = 0; i < server_len; ) { 1581 for (j = 0; j < client_len; ) { 1582 if (server[i] == client[j] && 1583 memcmp(&server[i + 1], 1584 &client[j + 1], server[i]) == 0) { 1585 /* We found a match */ 1586 result = &server[i]; 1587 status = OPENSSL_NPN_NEGOTIATED; 1588 goto found; 1589 } 1590 j += client[j]; 1591 j++; 1592 } 1593 i += server[i]; 1594 i++; 1595 } 1596 1597 /* There's no overlap between our protocols and the server's list. */ 1598 result = client; 1599 status = OPENSSL_NPN_NO_OVERLAP; 1600 1601 found: 1602 *out = (unsigned char *) result + 1; 1603 *outlen = result[0]; 1604 return (status); 1605 } 1606 1607 /* SSL_get0_next_proto_negotiated is deprecated. */ 1608 void 1609 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1610 unsigned int *len) 1611 { 1612 *data = NULL; 1613 *len = 0; 1614 } 1615 1616 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1617 void 1618 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1619 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1620 { 1621 } 1622 1623 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1624 void 1625 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1626 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1627 unsigned int inlen, void *arg), void *arg) 1628 { 1629 } 1630 1631 /* 1632 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1633 * protocols, which must be in wire-format (i.e. a series of non-empty, 1634 * 8-bit length-prefixed strings). Returns 0 on success. 1635 */ 1636 int 1637 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1638 unsigned int protos_len) 1639 { 1640 int failed = 1; 1641 1642 if (protos == NULL || protos_len == 0) 1643 goto err; 1644 1645 free(ctx->internal->alpn_client_proto_list); 1646 ctx->internal->alpn_client_proto_list = NULL; 1647 ctx->internal->alpn_client_proto_list_len = 0; 1648 1649 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1650 == NULL) 1651 goto err; 1652 ctx->internal->alpn_client_proto_list_len = protos_len; 1653 1654 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1655 1656 failed = 0; 1657 1658 err: 1659 /* NOTE: Return values are the reverse of what you expect. */ 1660 return (failed); 1661 } 1662 1663 /* 1664 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1665 * protocols, which must be in wire-format (i.e. a series of non-empty, 1666 * 8-bit length-prefixed strings). Returns 0 on success. 1667 */ 1668 int 1669 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1670 unsigned int protos_len) 1671 { 1672 int failed = 1; 1673 1674 if (protos == NULL || protos_len == 0) 1675 goto err; 1676 1677 free(ssl->internal->alpn_client_proto_list); 1678 ssl->internal->alpn_client_proto_list = NULL; 1679 ssl->internal->alpn_client_proto_list_len = 0; 1680 1681 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1682 == NULL) 1683 goto err; 1684 ssl->internal->alpn_client_proto_list_len = protos_len; 1685 1686 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1687 1688 failed = 0; 1689 1690 err: 1691 /* NOTE: Return values are the reverse of what you expect. */ 1692 return (failed); 1693 } 1694 1695 /* 1696 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1697 * ClientHello processing in order to select an ALPN protocol from the 1698 * client's list of offered protocols. 1699 */ 1700 void 1701 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1702 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1703 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1704 { 1705 ctx->internal->alpn_select_cb = cb; 1706 ctx->internal->alpn_select_cb_arg = arg; 1707 } 1708 1709 /* 1710 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1711 * it sets data to point to len bytes of protocol name (not including the 1712 * leading length-prefix byte). If the server didn't respond with* a negotiated 1713 * protocol then len will be zero. 1714 */ 1715 void 1716 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1717 unsigned int *len) 1718 { 1719 *data = ssl->s3->internal->alpn_selected; 1720 *len = ssl->s3->internal->alpn_selected_len; 1721 } 1722 1723 int 1724 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1725 const char *label, size_t llen, const unsigned char *p, size_t plen, 1726 int use_context) 1727 { 1728 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1729 if (!use_context) { 1730 p = NULL; 1731 plen = 0; 1732 } 1733 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1734 out, olen); 1735 } 1736 1737 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1738 use_context)); 1739 } 1740 1741 static unsigned long 1742 ssl_session_hash(const SSL_SESSION *a) 1743 { 1744 unsigned long l; 1745 1746 l = (unsigned long) 1747 ((unsigned int) a->session_id[0] )| 1748 ((unsigned int) a->session_id[1]<< 8L)| 1749 ((unsigned long)a->session_id[2]<<16L)| 1750 ((unsigned long)a->session_id[3]<<24L); 1751 return (l); 1752 } 1753 1754 /* 1755 * NB: If this function (or indeed the hash function which uses a sort of 1756 * coarser function than this one) is changed, ensure 1757 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1758 * able to construct an SSL_SESSION that will collide with any existing session 1759 * with a matching session ID. 1760 */ 1761 static int 1762 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1763 { 1764 if (a->ssl_version != b->ssl_version) 1765 return (1); 1766 if (a->session_id_length != b->session_id_length) 1767 return (1); 1768 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1769 return (1); 1770 return (0); 1771 } 1772 1773 /* 1774 * These wrapper functions should remain rather than redeclaring 1775 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1776 * variable. The reason is that the functions aren't static, they're exposed via 1777 * ssl.h. 1778 */ 1779 static unsigned long 1780 ssl_session_LHASH_HASH(const void *arg) 1781 { 1782 const SSL_SESSION *a = arg; 1783 1784 return ssl_session_hash(a); 1785 } 1786 1787 static int 1788 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1789 { 1790 const SSL_SESSION *a = arg1; 1791 const SSL_SESSION *b = arg2; 1792 1793 return ssl_session_cmp(a, b); 1794 } 1795 1796 SSL_CTX * 1797 SSL_CTX_new(const SSL_METHOD *meth) 1798 { 1799 SSL_CTX *ret; 1800 1801 if (!OPENSSL_init_ssl(0, NULL)) { 1802 SSLerrorx(SSL_R_LIBRARY_BUG); 1803 return (NULL); 1804 } 1805 1806 if (meth == NULL) { 1807 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1808 return (NULL); 1809 } 1810 1811 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1812 SSLerrorx(ERR_R_MALLOC_FAILURE); 1813 return (NULL); 1814 } 1815 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1816 free(ret); 1817 SSLerrorx(ERR_R_MALLOC_FAILURE); 1818 return (NULL); 1819 } 1820 1821 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1822 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1823 goto err; 1824 } 1825 1826 ret->method = meth; 1827 ret->internal->min_tls_version = meth->internal->min_tls_version; 1828 ret->internal->max_tls_version = meth->internal->max_tls_version; 1829 ret->internal->min_proto_version = 0; 1830 ret->internal->max_proto_version = 0; 1831 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1832 1833 ret->cert_store = NULL; 1834 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1835 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1836 ret->internal->session_cache_head = NULL; 1837 ret->internal->session_cache_tail = NULL; 1838 1839 /* We take the system default */ 1840 ret->session_timeout = ssl_get_default_timeout(); 1841 1842 ret->internal->new_session_cb = 0; 1843 ret->internal->remove_session_cb = 0; 1844 ret->internal->get_session_cb = 0; 1845 ret->internal->generate_session_id = 0; 1846 1847 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1848 1849 ret->references = 1; 1850 ret->internal->quiet_shutdown = 0; 1851 1852 ret->internal->info_callback = NULL; 1853 1854 ret->internal->app_verify_callback = 0; 1855 ret->internal->app_verify_arg = NULL; 1856 1857 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1858 ret->internal->read_ahead = 0; 1859 ret->internal->msg_callback = 0; 1860 ret->internal->msg_callback_arg = NULL; 1861 ret->verify_mode = SSL_VERIFY_NONE; 1862 ret->sid_ctx_length = 0; 1863 ret->internal->default_verify_callback = NULL; 1864 1865 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1866 goto err; 1867 1868 ret->default_passwd_callback = 0; 1869 ret->default_passwd_callback_userdata = NULL; 1870 ret->internal->client_cert_cb = 0; 1871 ret->internal->app_gen_cookie_cb = 0; 1872 ret->internal->app_verify_cookie_cb = 0; 1873 1874 ret->internal->sessions = lh_SSL_SESSION_new(); 1875 if (ret->internal->sessions == NULL) 1876 goto err; 1877 ret->cert_store = X509_STORE_new(); 1878 if (ret->cert_store == NULL) 1879 goto err; 1880 1881 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1882 NULL, SSL_DEFAULT_CIPHER_LIST); 1883 if (ret->cipher_list == NULL || 1884 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1885 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1886 goto err2; 1887 } 1888 1889 ret->param = X509_VERIFY_PARAM_new(); 1890 if (!ret->param) 1891 goto err; 1892 1893 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1894 goto err; 1895 1896 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1897 1898 ret->extra_certs = NULL; 1899 1900 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1901 1902 ret->internal->tlsext_servername_callback = 0; 1903 ret->internal->tlsext_servername_arg = NULL; 1904 1905 /* Setup RFC4507 ticket keys */ 1906 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1907 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1908 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1909 1910 ret->internal->tlsext_status_cb = 0; 1911 ret->internal->tlsext_status_arg = NULL; 1912 1913 #ifndef OPENSSL_NO_ENGINE 1914 ret->internal->client_cert_engine = NULL; 1915 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1916 #define eng_strx(x) #x 1917 #define eng_str(x) eng_strx(x) 1918 /* Use specific client engine automatically... ignore errors */ 1919 { 1920 ENGINE *eng; 1921 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1922 if (!eng) { 1923 ERR_clear_error(); 1924 ENGINE_load_builtin_engines(); 1925 eng = ENGINE_by_id(eng_str( 1926 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1927 } 1928 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1929 ERR_clear_error(); 1930 } 1931 #endif 1932 #endif 1933 /* 1934 * Default is to connect to non-RI servers. When RI is more widely 1935 * deployed might change this. 1936 */ 1937 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1938 1939 return (ret); 1940 err: 1941 SSLerrorx(ERR_R_MALLOC_FAILURE); 1942 err2: 1943 SSL_CTX_free(ret); 1944 return (NULL); 1945 } 1946 1947 void 1948 SSL_CTX_free(SSL_CTX *ctx) 1949 { 1950 int i; 1951 1952 if (ctx == NULL) 1953 return; 1954 1955 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1956 if (i > 0) 1957 return; 1958 1959 X509_VERIFY_PARAM_free(ctx->param); 1960 1961 /* 1962 * Free internal session cache. However: the remove_cb() may reference 1963 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1964 * after the sessions were flushed. 1965 * As the ex_data handling routines might also touch the session cache, 1966 * the most secure solution seems to be: empty (flush) the cache, then 1967 * free ex_data, then finally free the cache. 1968 * (See ticket [openssl.org #212].) 1969 */ 1970 if (ctx->internal->sessions != NULL) 1971 SSL_CTX_flush_sessions(ctx, 0); 1972 1973 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1974 1975 lh_SSL_SESSION_free(ctx->internal->sessions); 1976 1977 X509_STORE_free(ctx->cert_store); 1978 sk_SSL_CIPHER_free(ctx->cipher_list); 1979 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 1980 ssl_cert_free(ctx->internal->cert); 1981 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1982 sk_X509_pop_free(ctx->extra_certs, X509_free); 1983 1984 #ifndef OPENSSL_NO_SRTP 1985 if (ctx->internal->srtp_profiles) 1986 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1987 #endif 1988 1989 #ifndef OPENSSL_NO_ENGINE 1990 ENGINE_finish(ctx->internal->client_cert_engine); 1991 #endif 1992 1993 free(ctx->internal->tlsext_ecpointformatlist); 1994 free(ctx->internal->tlsext_supportedgroups); 1995 1996 free(ctx->internal->alpn_client_proto_list); 1997 1998 free(ctx->internal); 1999 free(ctx); 2000 } 2001 2002 int 2003 SSL_CTX_up_ref(SSL_CTX *ctx) 2004 { 2005 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2006 return ((refs > 1) ? 1 : 0); 2007 } 2008 2009 pem_password_cb * 2010 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2011 { 2012 return (ctx->default_passwd_callback); 2013 } 2014 2015 void 2016 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2017 { 2018 ctx->default_passwd_callback = cb; 2019 } 2020 2021 void * 2022 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2023 { 2024 return ctx->default_passwd_callback_userdata; 2025 } 2026 2027 void 2028 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2029 { 2030 ctx->default_passwd_callback_userdata = u; 2031 } 2032 2033 void 2034 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2035 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2036 { 2037 ctx->internal->app_verify_callback = cb; 2038 ctx->internal->app_verify_arg = arg; 2039 } 2040 2041 void 2042 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2043 { 2044 ctx->verify_mode = mode; 2045 ctx->internal->default_verify_callback = cb; 2046 } 2047 2048 void 2049 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2050 { 2051 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2052 } 2053 2054 static int 2055 ssl_cert_can_sign(X509 *x) 2056 { 2057 /* This call populates extension flags (ex_flags). */ 2058 X509_check_purpose(x, -1, 0); 2059 2060 /* Key usage, if present, must allow signing. */ 2061 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2062 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2063 } 2064 2065 void 2066 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2067 { 2068 unsigned long mask_a, mask_k; 2069 CERT_PKEY *cpk; 2070 2071 if (c == NULL) 2072 return; 2073 2074 mask_a = SSL_aNULL | SSL_aTLS1_3; 2075 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2076 2077 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2078 mask_k |= SSL_kDHE; 2079 2080 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2081 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2082 if (ssl_cert_can_sign(cpk->x509)) 2083 mask_a |= SSL_aECDSA; 2084 } 2085 2086 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2087 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2088 mask_k |= SSL_kGOST; 2089 mask_a |= SSL_aGOST01; 2090 } 2091 2092 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2093 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2094 mask_a |= SSL_aRSA; 2095 mask_k |= SSL_kRSA; 2096 } 2097 2098 c->mask_k = mask_k; 2099 c->mask_a = mask_a; 2100 c->valid = 1; 2101 } 2102 2103 /* See if this handshake is using an ECC cipher suite. */ 2104 int 2105 ssl_using_ecc_cipher(SSL *s) 2106 { 2107 unsigned long alg_a, alg_k; 2108 2109 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2110 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2111 2112 return SSI(s)->tlsext_ecpointformatlist != NULL && 2113 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2114 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2115 } 2116 2117 int 2118 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2119 { 2120 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2121 unsigned long alg_a; 2122 2123 alg_a = cs->algorithm_auth; 2124 2125 if (alg_a & SSL_aECDSA) { 2126 /* This call populates extension flags (ex_flags). */ 2127 X509_check_purpose(x, -1, 0); 2128 2129 /* Key usage, if present, must allow signing. */ 2130 if ((x->ex_flags & EXFLAG_KUSAGE) && 2131 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2132 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2133 return (0); 2134 } 2135 } 2136 2137 return (1); 2138 } 2139 2140 CERT_PKEY * 2141 ssl_get_server_send_pkey(const SSL *s) 2142 { 2143 unsigned long alg_a; 2144 CERT *c; 2145 int i; 2146 2147 c = s->cert; 2148 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2149 2150 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2151 2152 if (alg_a & SSL_aECDSA) { 2153 i = SSL_PKEY_ECC; 2154 } else if (alg_a & SSL_aRSA) { 2155 i = SSL_PKEY_RSA; 2156 } else if (alg_a & SSL_aGOST01) { 2157 i = SSL_PKEY_GOST01; 2158 } else { /* if (alg_a & SSL_aNULL) */ 2159 SSLerror(s, ERR_R_INTERNAL_ERROR); 2160 return (NULL); 2161 } 2162 2163 return (c->pkeys + i); 2164 } 2165 2166 EVP_PKEY * 2167 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2168 const struct ssl_sigalg **sap) 2169 { 2170 const struct ssl_sigalg *sigalg = NULL; 2171 EVP_PKEY *pkey = NULL; 2172 unsigned long alg_a; 2173 CERT *c; 2174 int idx = -1; 2175 2176 alg_a = cipher->algorithm_auth; 2177 c = s->cert; 2178 2179 if (alg_a & SSL_aRSA) { 2180 idx = SSL_PKEY_RSA; 2181 } else if ((alg_a & SSL_aECDSA) && 2182 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2183 idx = SSL_PKEY_ECC; 2184 if (idx == -1) { 2185 SSLerror(s, ERR_R_INTERNAL_ERROR); 2186 return (NULL); 2187 } 2188 2189 pkey = c->pkeys[idx].privatekey; 2190 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2191 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2192 return (NULL); 2193 } 2194 *pmd = sigalg->md(); 2195 *sap = sigalg; 2196 2197 return (pkey); 2198 } 2199 2200 DH * 2201 ssl_get_auto_dh(SSL *s) 2202 { 2203 CERT_PKEY *cpk; 2204 int keylen; 2205 DH *dhp; 2206 2207 if (s->cert->dh_tmp_auto == 2) { 2208 keylen = 1024; 2209 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2210 keylen = 1024; 2211 if (S3I(s)->hs.cipher->strength_bits == 256) 2212 keylen = 3072; 2213 } else { 2214 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2215 return (NULL); 2216 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2217 return (NULL); 2218 keylen = EVP_PKEY_bits(cpk->privatekey); 2219 } 2220 2221 if ((dhp = DH_new()) == NULL) 2222 return (NULL); 2223 2224 dhp->g = BN_new(); 2225 if (dhp->g != NULL) 2226 BN_set_word(dhp->g, 2); 2227 2228 if (keylen >= 8192) 2229 dhp->p = get_rfc3526_prime_8192(NULL); 2230 else if (keylen >= 4096) 2231 dhp->p = get_rfc3526_prime_4096(NULL); 2232 else if (keylen >= 3072) 2233 dhp->p = get_rfc3526_prime_3072(NULL); 2234 else if (keylen >= 2048) 2235 dhp->p = get_rfc3526_prime_2048(NULL); 2236 else if (keylen >= 1536) 2237 dhp->p = get_rfc3526_prime_1536(NULL); 2238 else 2239 dhp->p = get_rfc2409_prime_1024(NULL); 2240 2241 if (dhp->p == NULL || dhp->g == NULL) { 2242 DH_free(dhp); 2243 return (NULL); 2244 } 2245 return (dhp); 2246 } 2247 2248 void 2249 ssl_update_cache(SSL *s, int mode) 2250 { 2251 int i; 2252 2253 /* 2254 * If the session_id_length is 0, we are not supposed to cache it, 2255 * and it would be rather hard to do anyway :-) 2256 */ 2257 if (s->session->session_id_length == 0) 2258 return; 2259 2260 i = s->session_ctx->internal->session_cache_mode; 2261 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2262 || SSL_CTX_add_session(s->session_ctx, s->session)) 2263 && (s->session_ctx->internal->new_session_cb != NULL)) { 2264 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2265 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2266 SSL_SESSION_free(s->session); 2267 } 2268 2269 /* auto flush every 255 connections */ 2270 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2271 ((i & mode) == mode)) { 2272 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2273 s->session_ctx->internal->stats.sess_connect_good : 2274 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2275 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2276 } 2277 } 2278 } 2279 2280 const SSL_METHOD * 2281 SSL_get_ssl_method(SSL *s) 2282 { 2283 return (s->method); 2284 } 2285 2286 int 2287 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2288 { 2289 int (*handshake_func)(SSL *) = NULL; 2290 int ret = 1; 2291 2292 if (s->method == method) 2293 return (ret); 2294 2295 if (s->internal->handshake_func == s->method->internal->ssl_connect) 2296 handshake_func = method->internal->ssl_connect; 2297 else if (s->internal->handshake_func == s->method->internal->ssl_accept) 2298 handshake_func = method->internal->ssl_accept; 2299 2300 if (s->method->internal->version == method->internal->version) { 2301 s->method = method; 2302 } else { 2303 s->method->internal->ssl_free(s); 2304 s->method = method; 2305 ret = s->method->internal->ssl_new(s); 2306 } 2307 s->internal->handshake_func = handshake_func; 2308 2309 return (ret); 2310 } 2311 2312 int 2313 SSL_get_error(const SSL *s, int i) 2314 { 2315 int reason; 2316 unsigned long l; 2317 BIO *bio; 2318 2319 if (i > 0) 2320 return (SSL_ERROR_NONE); 2321 2322 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2323 * etc, where we do encode the error */ 2324 if ((l = ERR_peek_error()) != 0) { 2325 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2326 return (SSL_ERROR_SYSCALL); 2327 else 2328 return (SSL_ERROR_SSL); 2329 } 2330 2331 if ((i < 0) && SSL_want_read(s)) { 2332 bio = SSL_get_rbio(s); 2333 if (BIO_should_read(bio)) { 2334 return (SSL_ERROR_WANT_READ); 2335 } else if (BIO_should_write(bio)) { 2336 /* 2337 * This one doesn't make too much sense... We never 2338 * try to write to the rbio, and an application 2339 * program where rbio and wbio are separate couldn't 2340 * even know what it should wait for. However if we 2341 * ever set s->internal->rwstate incorrectly (so that we have 2342 * SSL_want_read(s) instead of SSL_want_write(s)) 2343 * and rbio and wbio *are* the same, this test works 2344 * around that bug; so it might be safer to keep it. 2345 */ 2346 return (SSL_ERROR_WANT_WRITE); 2347 } else if (BIO_should_io_special(bio)) { 2348 reason = BIO_get_retry_reason(bio); 2349 if (reason == BIO_RR_CONNECT) 2350 return (SSL_ERROR_WANT_CONNECT); 2351 else if (reason == BIO_RR_ACCEPT) 2352 return (SSL_ERROR_WANT_ACCEPT); 2353 else 2354 return (SSL_ERROR_SYSCALL); /* unknown */ 2355 } 2356 } 2357 2358 if ((i < 0) && SSL_want_write(s)) { 2359 bio = SSL_get_wbio(s); 2360 if (BIO_should_write(bio)) { 2361 return (SSL_ERROR_WANT_WRITE); 2362 } else if (BIO_should_read(bio)) { 2363 /* 2364 * See above (SSL_want_read(s) with 2365 * BIO_should_write(bio)) 2366 */ 2367 return (SSL_ERROR_WANT_READ); 2368 } else if (BIO_should_io_special(bio)) { 2369 reason = BIO_get_retry_reason(bio); 2370 if (reason == BIO_RR_CONNECT) 2371 return (SSL_ERROR_WANT_CONNECT); 2372 else if (reason == BIO_RR_ACCEPT) 2373 return (SSL_ERROR_WANT_ACCEPT); 2374 else 2375 return (SSL_ERROR_SYSCALL); 2376 } 2377 } 2378 if ((i < 0) && SSL_want_x509_lookup(s)) { 2379 return (SSL_ERROR_WANT_X509_LOOKUP); 2380 } 2381 2382 if (i == 0) { 2383 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2384 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2385 return (SSL_ERROR_ZERO_RETURN); 2386 } 2387 return (SSL_ERROR_SYSCALL); 2388 } 2389 2390 int 2391 SSL_do_handshake(SSL *s) 2392 { 2393 int ret = 1; 2394 2395 if (s->internal->handshake_func == NULL) { 2396 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2397 return (-1); 2398 } 2399 2400 s->method->internal->ssl_renegotiate_check(s); 2401 2402 if (SSL_in_init(s) || SSL_in_before(s)) { 2403 ret = s->internal->handshake_func(s); 2404 } 2405 return (ret); 2406 } 2407 2408 /* 2409 * For the next 2 functions, SSL_clear() sets shutdown and so 2410 * one of these calls will reset it 2411 */ 2412 void 2413 SSL_set_accept_state(SSL *s) 2414 { 2415 s->server = 1; 2416 s->internal->shutdown = 0; 2417 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2418 s->internal->handshake_func = s->method->internal->ssl_accept; 2419 ssl_clear_cipher_state(s); 2420 } 2421 2422 void 2423 SSL_set_connect_state(SSL *s) 2424 { 2425 s->server = 0; 2426 s->internal->shutdown = 0; 2427 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2428 s->internal->handshake_func = s->method->internal->ssl_connect; 2429 ssl_clear_cipher_state(s); 2430 } 2431 2432 int 2433 ssl_undefined_function(SSL *s) 2434 { 2435 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2436 return (0); 2437 } 2438 2439 int 2440 ssl_undefined_void_function(void) 2441 { 2442 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2443 return (0); 2444 } 2445 2446 int 2447 ssl_undefined_const_function(const SSL *s) 2448 { 2449 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2450 return (0); 2451 } 2452 2453 const char * 2454 ssl_version_string(int ver) 2455 { 2456 switch (ver) { 2457 case TLS1_VERSION: 2458 return (SSL_TXT_TLSV1); 2459 case TLS1_1_VERSION: 2460 return (SSL_TXT_TLSV1_1); 2461 case TLS1_2_VERSION: 2462 return (SSL_TXT_TLSV1_2); 2463 case TLS1_3_VERSION: 2464 return (SSL_TXT_TLSV1_3); 2465 case DTLS1_VERSION: 2466 return (SSL_TXT_DTLS1); 2467 case DTLS1_2_VERSION: 2468 return (SSL_TXT_DTLS1_2); 2469 default: 2470 return ("unknown"); 2471 } 2472 } 2473 2474 const char * 2475 SSL_get_version(const SSL *s) 2476 { 2477 return ssl_version_string(s->version); 2478 } 2479 2480 SSL * 2481 SSL_dup(SSL *s) 2482 { 2483 STACK_OF(X509_NAME) *sk; 2484 X509_NAME *xn; 2485 SSL *ret; 2486 int i; 2487 2488 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2489 goto err; 2490 2491 ret->version = s->version; 2492 ret->method = s->method; 2493 2494 if (s->session != NULL) { 2495 if (!SSL_copy_session_id(ret, s)) 2496 goto err; 2497 } else { 2498 /* 2499 * No session has been established yet, so we have to expect 2500 * that s->cert or ret->cert will be changed later -- 2501 * they should not both point to the same object, 2502 * and thus we can't use SSL_copy_session_id. 2503 */ 2504 2505 ret->method->internal->ssl_free(ret); 2506 ret->method = s->method; 2507 ret->method->internal->ssl_new(ret); 2508 2509 ssl_cert_free(ret->cert); 2510 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2511 goto err; 2512 2513 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2514 s->sid_ctx_length)) 2515 goto err; 2516 } 2517 2518 ret->internal->options = s->internal->options; 2519 ret->internal->mode = s->internal->mode; 2520 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2521 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2522 ret->internal->msg_callback = s->internal->msg_callback; 2523 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2524 SSL_set_verify(ret, SSL_get_verify_mode(s), 2525 SSL_get_verify_callback(s)); 2526 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2527 ret->internal->generate_session_id = s->internal->generate_session_id; 2528 2529 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2530 2531 ret->internal->debug = s->internal->debug; 2532 2533 /* copy app data, a little dangerous perhaps */ 2534 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2535 &ret->internal->ex_data, &s->internal->ex_data)) 2536 goto err; 2537 2538 /* setup rbio, and wbio */ 2539 if (s->rbio != NULL) { 2540 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2541 goto err; 2542 } 2543 if (s->wbio != NULL) { 2544 if (s->wbio != s->rbio) { 2545 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2546 goto err; 2547 } else 2548 ret->wbio = ret->rbio; 2549 } 2550 ret->internal->rwstate = s->internal->rwstate; 2551 ret->internal->in_handshake = s->internal->in_handshake; 2552 ret->internal->handshake_func = s->internal->handshake_func; 2553 ret->server = s->server; 2554 ret->internal->renegotiate = s->internal->renegotiate; 2555 ret->internal->new_session = s->internal->new_session; 2556 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2557 ret->internal->shutdown = s->internal->shutdown; 2558 /* SSL_dup does not really work at any state, though */ 2559 S3I(ret)->hs.state = S3I(s)->hs.state; 2560 ret->internal->rstate = s->internal->rstate; 2561 2562 /* 2563 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2564 * ret->init_off 2565 */ 2566 ret->internal->init_num = 0; 2567 2568 ret->internal->hit = s->internal->hit; 2569 2570 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2571 2572 if (s->cipher_list != NULL) { 2573 if ((ret->cipher_list = 2574 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2575 goto err; 2576 } 2577 if (s->internal->cipher_list_tls13 != NULL) { 2578 if ((ret->internal->cipher_list_tls13 = 2579 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2580 goto err; 2581 } 2582 2583 /* Dup the client_CA list */ 2584 if (s->internal->client_CA != NULL) { 2585 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2586 ret->internal->client_CA = sk; 2587 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2588 xn = sk_X509_NAME_value(sk, i); 2589 if (sk_X509_NAME_set(sk, i, 2590 X509_NAME_dup(xn)) == NULL) { 2591 X509_NAME_free(xn); 2592 goto err; 2593 } 2594 } 2595 } 2596 2597 return ret; 2598 err: 2599 SSL_free(ret); 2600 return NULL; 2601 } 2602 2603 void 2604 ssl_clear_cipher_state(SSL *s) 2605 { 2606 ssl_clear_cipher_read_state(s); 2607 ssl_clear_cipher_write_state(s); 2608 } 2609 2610 void 2611 ssl_clear_cipher_read_state(SSL *s) 2612 { 2613 tls12_record_layer_clear_read_state(s->internal->rl); 2614 tls12_record_layer_read_cipher_hash(s->internal->rl, 2615 &s->enc_read_ctx, &s->read_hash); 2616 } 2617 2618 void 2619 ssl_clear_cipher_write_state(SSL *s) 2620 { 2621 tls12_record_layer_clear_write_state(s->internal->rl); 2622 } 2623 2624 /* Fix this function so that it takes an optional type parameter */ 2625 X509 * 2626 SSL_get_certificate(const SSL *s) 2627 { 2628 return (s->cert->key->x509); 2629 } 2630 2631 /* Fix this function so that it takes an optional type parameter */ 2632 EVP_PKEY * 2633 SSL_get_privatekey(const SSL *s) 2634 { 2635 return (s->cert->key->privatekey); 2636 } 2637 2638 const SSL_CIPHER * 2639 SSL_get_current_cipher(const SSL *s) 2640 { 2641 if ((s->session != NULL) && (s->session->cipher != NULL)) 2642 return (s->session->cipher); 2643 return (NULL); 2644 } 2645 const void * 2646 SSL_get_current_compression(SSL *s) 2647 { 2648 return (NULL); 2649 } 2650 2651 const void * 2652 SSL_get_current_expansion(SSL *s) 2653 { 2654 return (NULL); 2655 } 2656 2657 size_t 2658 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2659 { 2660 size_t len = sizeof(s->s3->client_random); 2661 2662 if (out == NULL) 2663 return len; 2664 2665 if (len > max_out) 2666 len = max_out; 2667 2668 memcpy(out, s->s3->client_random, len); 2669 2670 return len; 2671 } 2672 2673 size_t 2674 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2675 { 2676 size_t len = sizeof(s->s3->server_random); 2677 2678 if (out == NULL) 2679 return len; 2680 2681 if (len > max_out) 2682 len = max_out; 2683 2684 memcpy(out, s->s3->server_random, len); 2685 2686 return len; 2687 } 2688 2689 int 2690 ssl_init_wbio_buffer(SSL *s, int push) 2691 { 2692 BIO *bbio; 2693 2694 if (s->bbio == NULL) { 2695 bbio = BIO_new(BIO_f_buffer()); 2696 if (bbio == NULL) 2697 return (0); 2698 s->bbio = bbio; 2699 } else { 2700 bbio = s->bbio; 2701 if (s->bbio == s->wbio) 2702 s->wbio = BIO_pop(s->wbio); 2703 } 2704 (void)BIO_reset(bbio); 2705 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2706 if (!BIO_set_read_buffer_size(bbio, 1)) { 2707 SSLerror(s, ERR_R_BUF_LIB); 2708 return (0); 2709 } 2710 if (push) { 2711 if (s->wbio != bbio) 2712 s->wbio = BIO_push(bbio, s->wbio); 2713 } else { 2714 if (s->wbio == bbio) 2715 s->wbio = BIO_pop(bbio); 2716 } 2717 return (1); 2718 } 2719 2720 void 2721 ssl_free_wbio_buffer(SSL *s) 2722 { 2723 if (s == NULL) 2724 return; 2725 2726 if (s->bbio == NULL) 2727 return; 2728 2729 if (s->bbio == s->wbio) { 2730 /* remove buffering */ 2731 s->wbio = BIO_pop(s->wbio); 2732 } 2733 BIO_free(s->bbio); 2734 s->bbio = NULL; 2735 } 2736 2737 void 2738 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2739 { 2740 ctx->internal->quiet_shutdown = mode; 2741 } 2742 2743 int 2744 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2745 { 2746 return (ctx->internal->quiet_shutdown); 2747 } 2748 2749 void 2750 SSL_set_quiet_shutdown(SSL *s, int mode) 2751 { 2752 s->internal->quiet_shutdown = mode; 2753 } 2754 2755 int 2756 SSL_get_quiet_shutdown(const SSL *s) 2757 { 2758 return (s->internal->quiet_shutdown); 2759 } 2760 2761 void 2762 SSL_set_shutdown(SSL *s, int mode) 2763 { 2764 s->internal->shutdown = mode; 2765 } 2766 2767 int 2768 SSL_get_shutdown(const SSL *s) 2769 { 2770 return (s->internal->shutdown); 2771 } 2772 2773 int 2774 SSL_version(const SSL *s) 2775 { 2776 return (s->version); 2777 } 2778 2779 SSL_CTX * 2780 SSL_get_SSL_CTX(const SSL *ssl) 2781 { 2782 return (ssl->ctx); 2783 } 2784 2785 SSL_CTX * 2786 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2787 { 2788 CERT *new_cert; 2789 2790 if (ctx == NULL) 2791 ctx = ssl->initial_ctx; 2792 if (ssl->ctx == ctx) 2793 return (ssl->ctx); 2794 2795 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2796 return NULL; 2797 ssl_cert_free(ssl->cert); 2798 ssl->cert = new_cert; 2799 2800 SSL_CTX_up_ref(ctx); 2801 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2802 ssl->ctx = ctx; 2803 2804 return (ssl->ctx); 2805 } 2806 2807 int 2808 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2809 { 2810 return (X509_STORE_set_default_paths(ctx->cert_store)); 2811 } 2812 2813 int 2814 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2815 const char *CApath) 2816 { 2817 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2818 } 2819 2820 int 2821 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2822 { 2823 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2824 } 2825 2826 void 2827 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2828 { 2829 ssl->internal->info_callback = cb; 2830 } 2831 2832 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2833 { 2834 return (ssl->internal->info_callback); 2835 } 2836 2837 int 2838 SSL_state(const SSL *ssl) 2839 { 2840 return (S3I(ssl)->hs.state); 2841 } 2842 2843 void 2844 SSL_set_state(SSL *ssl, int state) 2845 { 2846 S3I(ssl)->hs.state = state; 2847 } 2848 2849 void 2850 SSL_set_verify_result(SSL *ssl, long arg) 2851 { 2852 ssl->verify_result = arg; 2853 } 2854 2855 long 2856 SSL_get_verify_result(const SSL *ssl) 2857 { 2858 return (ssl->verify_result); 2859 } 2860 2861 int 2862 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2863 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2864 { 2865 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2866 new_func, dup_func, free_func)); 2867 } 2868 2869 int 2870 SSL_set_ex_data(SSL *s, int idx, void *arg) 2871 { 2872 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2873 } 2874 2875 void * 2876 SSL_get_ex_data(const SSL *s, int idx) 2877 { 2878 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2879 } 2880 2881 int 2882 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2883 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2884 { 2885 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2886 new_func, dup_func, free_func)); 2887 } 2888 2889 int 2890 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2891 { 2892 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2893 } 2894 2895 void * 2896 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2897 { 2898 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2899 } 2900 2901 int 2902 ssl_ok(SSL *s) 2903 { 2904 return (1); 2905 } 2906 2907 X509_STORE * 2908 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2909 { 2910 return (ctx->cert_store); 2911 } 2912 2913 void 2914 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2915 { 2916 X509_STORE_free(ctx->cert_store); 2917 ctx->cert_store = store; 2918 } 2919 2920 X509 * 2921 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2922 { 2923 if (ctx->internal->cert == NULL) 2924 return NULL; 2925 2926 return ctx->internal->cert->key->x509; 2927 } 2928 2929 int 2930 SSL_want(const SSL *s) 2931 { 2932 return (s->internal->rwstate); 2933 } 2934 2935 void 2936 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2937 int keylength)) 2938 { 2939 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2940 } 2941 2942 void 2943 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2944 int keylength)) 2945 { 2946 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2947 } 2948 2949 void 2950 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2951 int keylength)) 2952 { 2953 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2954 } 2955 2956 void 2957 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2958 int keylength)) 2959 { 2960 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2961 } 2962 2963 void 2964 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2965 int is_export, int keylength)) 2966 { 2967 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2968 (void (*)(void))ecdh); 2969 } 2970 2971 void 2972 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2973 int keylength)) 2974 { 2975 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2976 } 2977 2978 2979 void 2980 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2981 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2982 { 2983 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2984 (void (*)(void))cb); 2985 } 2986 2987 void 2988 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2989 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2990 { 2991 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2992 } 2993 2994 void 2995 SSL_set_debug(SSL *s, int debug) 2996 { 2997 s->internal->debug = debug; 2998 } 2999 3000 int 3001 SSL_cache_hit(SSL *s) 3002 { 3003 return (s->internal->hit); 3004 } 3005 3006 int 3007 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3008 { 3009 return ctx->internal->min_proto_version; 3010 } 3011 3012 int 3013 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3014 { 3015 return ssl_version_set_min(ctx->method, version, 3016 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3017 &ctx->internal->min_proto_version); 3018 } 3019 3020 int 3021 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3022 { 3023 return ctx->internal->max_proto_version; 3024 } 3025 3026 int 3027 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3028 { 3029 return ssl_version_set_max(ctx->method, version, 3030 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3031 &ctx->internal->max_proto_version); 3032 } 3033 3034 int 3035 SSL_get_min_proto_version(SSL *ssl) 3036 { 3037 return ssl->internal->min_proto_version; 3038 } 3039 3040 int 3041 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3042 { 3043 return ssl_version_set_min(ssl->method, version, 3044 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3045 &ssl->internal->min_proto_version); 3046 } 3047 int 3048 SSL_get_max_proto_version(SSL *ssl) 3049 { 3050 return ssl->internal->max_proto_version; 3051 } 3052 3053 int 3054 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3055 { 3056 return ssl_version_set_max(ssl->method, version, 3057 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3058 &ssl->internal->max_proto_version); 3059 } 3060 3061 static int 3062 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3063 { 3064 SSL_CIPHER const *a = a_; 3065 SSL_CIPHER const *b = b_; 3066 return ssl_cipher_id_cmp(a, b); 3067 } 3068 3069 SSL_CIPHER * 3070 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3071 { 3072 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3073 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3074 } 3075