1 /* $OpenBSD: ssl_lib.c,v 1.245 2021/02/08 17:20:47 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 "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->internal->type = 0; 190 191 s->version = s->method->internal->version; 192 s->client_version = s->version; 193 s->internal->rwstate = SSL_NOTHING; 194 s->internal->rstate = SSL_ST_READ_HEADER; 195 196 tls13_ctx_free(s->internal->tls13); 197 s->internal->tls13 = NULL; 198 199 ssl3_release_init_buffer(s); 200 201 ssl_clear_cipher_state(s); 202 203 s->internal->first_packet = 0; 204 205 /* 206 * Check to see if we were changed into a different method, if 207 * so, revert back if we are not doing session-id reuse. 208 */ 209 if (!s->internal->in_handshake && (s->session == NULL) && 210 (s->method != s->ctx->method)) { 211 s->method->internal->ssl_free(s); 212 s->method = s->ctx->method; 213 if (!s->method->internal->ssl_new(s)) 214 return (0); 215 } else 216 s->method->internal->ssl_clear(s); 217 218 return (1); 219 } 220 221 /* Used to change an SSL_CTXs default SSL method type */ 222 int 223 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 224 { 225 STACK_OF(SSL_CIPHER) *ciphers; 226 227 ctx->method = meth; 228 229 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 230 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 231 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 232 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 233 return (0); 234 } 235 return (1); 236 } 237 238 SSL * 239 SSL_new(SSL_CTX *ctx) 240 { 241 SSL *s; 242 243 if (ctx == NULL) { 244 SSLerrorx(SSL_R_NULL_SSL_CTX); 245 return (NULL); 246 } 247 if (ctx->method == NULL) { 248 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 249 return (NULL); 250 } 251 252 if ((s = calloc(1, sizeof(*s))) == NULL) 253 goto err; 254 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 255 goto err; 256 257 s->internal->min_version = ctx->internal->min_version; 258 s->internal->max_version = ctx->internal->max_version; 259 260 s->internal->options = ctx->internal->options; 261 s->internal->mode = ctx->internal->mode; 262 s->internal->max_cert_list = ctx->internal->max_cert_list; 263 264 if ((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)->tmp.finish_md_len; 727 if (count > ret) 728 count = ret; 729 memcpy(buf, S3I(s)->tmp.finish_md, 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)->tmp.peer_finish_md_len; 740 if (count > ret) 741 count = ret; 742 memcpy(buf, S3I(s)->tmp.peer_finish_md, 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_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_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 = NULL; 1720 *len = 0; 1721 1722 *data = ssl->s3->internal->alpn_selected; 1723 *len = ssl->s3->internal->alpn_selected_len; 1724 } 1725 1726 int 1727 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1728 const char *label, size_t llen, const unsigned char *p, size_t plen, 1729 int use_context) 1730 { 1731 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1732 if (!use_context) { 1733 p = NULL; 1734 plen = 0; 1735 } 1736 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1737 out, olen); 1738 } 1739 1740 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1741 use_context)); 1742 } 1743 1744 static unsigned long 1745 ssl_session_hash(const SSL_SESSION *a) 1746 { 1747 unsigned long l; 1748 1749 l = (unsigned long) 1750 ((unsigned int) a->session_id[0] )| 1751 ((unsigned int) a->session_id[1]<< 8L)| 1752 ((unsigned long)a->session_id[2]<<16L)| 1753 ((unsigned long)a->session_id[3]<<24L); 1754 return (l); 1755 } 1756 1757 /* 1758 * NB: If this function (or indeed the hash function which uses a sort of 1759 * coarser function than this one) is changed, ensure 1760 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1761 * able to construct an SSL_SESSION that will collide with any existing session 1762 * with a matching session ID. 1763 */ 1764 static int 1765 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1766 { 1767 if (a->ssl_version != b->ssl_version) 1768 return (1); 1769 if (a->session_id_length != b->session_id_length) 1770 return (1); 1771 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1772 return (1); 1773 return (0); 1774 } 1775 1776 /* 1777 * These wrapper functions should remain rather than redeclaring 1778 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1779 * variable. The reason is that the functions aren't static, they're exposed via 1780 * ssl.h. 1781 */ 1782 static unsigned long 1783 ssl_session_LHASH_HASH(const void *arg) 1784 { 1785 const SSL_SESSION *a = arg; 1786 1787 return ssl_session_hash(a); 1788 } 1789 1790 static int 1791 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1792 { 1793 const SSL_SESSION *a = arg1; 1794 const SSL_SESSION *b = arg2; 1795 1796 return ssl_session_cmp(a, b); 1797 } 1798 1799 SSL_CTX * 1800 SSL_CTX_new(const SSL_METHOD *meth) 1801 { 1802 SSL_CTX *ret; 1803 1804 if (!OPENSSL_init_ssl(0, NULL)) { 1805 SSLerrorx(SSL_R_LIBRARY_BUG); 1806 return (NULL); 1807 } 1808 1809 if (meth == NULL) { 1810 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1811 return (NULL); 1812 } 1813 1814 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1815 SSLerrorx(ERR_R_MALLOC_FAILURE); 1816 return (NULL); 1817 } 1818 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1819 free(ret); 1820 SSLerrorx(ERR_R_MALLOC_FAILURE); 1821 return (NULL); 1822 } 1823 1824 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1825 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1826 goto err; 1827 } 1828 1829 ret->method = meth; 1830 ret->internal->min_version = meth->internal->min_version; 1831 ret->internal->max_version = meth->internal->max_version; 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.new_cipher->algorithm_auth; 2111 alg_k = S3I(s)->hs.new_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.new_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.new_cipher); 2150 2151 alg_a = S3I(s)->hs.new_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.new_cipher->algorithm_auth & SSL_aNULL) { 2211 keylen = 1024; 2212 if (S3I(s)->hs.new_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 DTLS1_VERSION: 2459 return (SSL_TXT_DTLS1); 2460 case TLS1_VERSION: 2461 return (SSL_TXT_TLSV1); 2462 case TLS1_1_VERSION: 2463 return (SSL_TXT_TLSV1_1); 2464 case TLS1_2_VERSION: 2465 return (SSL_TXT_TLSV1_2); 2466 case TLS1_3_VERSION: 2467 return (SSL_TXT_TLSV1_3); 2468 default: 2469 return ("unknown"); 2470 } 2471 } 2472 2473 const char * 2474 SSL_get_version(const SSL *s) 2475 { 2476 return ssl_version_string(s->version); 2477 } 2478 2479 SSL * 2480 SSL_dup(SSL *s) 2481 { 2482 STACK_OF(X509_NAME) *sk; 2483 X509_NAME *xn; 2484 SSL *ret; 2485 int i; 2486 2487 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2488 goto err; 2489 2490 ret->version = s->version; 2491 ret->internal->type = s->internal->type; 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 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2614 s->enc_read_ctx = NULL; 2615 EVP_MD_CTX_free(s->read_hash); 2616 s->read_hash = NULL; 2617 2618 tls12_record_layer_clear_read_state(s->internal->rl); 2619 } 2620 2621 void 2622 ssl_clear_cipher_write_state(SSL *s) 2623 { 2624 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2625 s->internal->enc_write_ctx = NULL; 2626 EVP_MD_CTX_free(s->internal->write_hash); 2627 s->internal->write_hash = NULL; 2628 2629 tls12_record_layer_clear_write_state(s->internal->rl); 2630 } 2631 2632 /* Fix this function so that it takes an optional type parameter */ 2633 X509 * 2634 SSL_get_certificate(const SSL *s) 2635 { 2636 return (s->cert->key->x509); 2637 } 2638 2639 /* Fix this function so that it takes an optional type parameter */ 2640 EVP_PKEY * 2641 SSL_get_privatekey(const SSL *s) 2642 { 2643 return (s->cert->key->privatekey); 2644 } 2645 2646 const SSL_CIPHER * 2647 SSL_get_current_cipher(const SSL *s) 2648 { 2649 if ((s->session != NULL) && (s->session->cipher != NULL)) 2650 return (s->session->cipher); 2651 return (NULL); 2652 } 2653 const void * 2654 SSL_get_current_compression(SSL *s) 2655 { 2656 return (NULL); 2657 } 2658 2659 const void * 2660 SSL_get_current_expansion(SSL *s) 2661 { 2662 return (NULL); 2663 } 2664 2665 size_t 2666 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2667 { 2668 size_t len = sizeof(s->s3->client_random); 2669 2670 if (out == NULL) 2671 return len; 2672 2673 if (len > max_out) 2674 len = max_out; 2675 2676 memcpy(out, s->s3->client_random, len); 2677 2678 return len; 2679 } 2680 2681 size_t 2682 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2683 { 2684 size_t len = sizeof(s->s3->server_random); 2685 2686 if (out == NULL) 2687 return len; 2688 2689 if (len > max_out) 2690 len = max_out; 2691 2692 memcpy(out, s->s3->server_random, len); 2693 2694 return len; 2695 } 2696 2697 int 2698 ssl_init_wbio_buffer(SSL *s, int push) 2699 { 2700 BIO *bbio; 2701 2702 if (s->bbio == NULL) { 2703 bbio = BIO_new(BIO_f_buffer()); 2704 if (bbio == NULL) 2705 return (0); 2706 s->bbio = bbio; 2707 } else { 2708 bbio = s->bbio; 2709 if (s->bbio == s->wbio) 2710 s->wbio = BIO_pop(s->wbio); 2711 } 2712 (void)BIO_reset(bbio); 2713 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2714 if (!BIO_set_read_buffer_size(bbio, 1)) { 2715 SSLerror(s, ERR_R_BUF_LIB); 2716 return (0); 2717 } 2718 if (push) { 2719 if (s->wbio != bbio) 2720 s->wbio = BIO_push(bbio, s->wbio); 2721 } else { 2722 if (s->wbio == bbio) 2723 s->wbio = BIO_pop(bbio); 2724 } 2725 return (1); 2726 } 2727 2728 void 2729 ssl_free_wbio_buffer(SSL *s) 2730 { 2731 if (s == NULL) 2732 return; 2733 2734 if (s->bbio == NULL) 2735 return; 2736 2737 if (s->bbio == s->wbio) { 2738 /* remove buffering */ 2739 s->wbio = BIO_pop(s->wbio); 2740 } 2741 BIO_free(s->bbio); 2742 s->bbio = NULL; 2743 } 2744 2745 void 2746 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2747 { 2748 ctx->internal->quiet_shutdown = mode; 2749 } 2750 2751 int 2752 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2753 { 2754 return (ctx->internal->quiet_shutdown); 2755 } 2756 2757 void 2758 SSL_set_quiet_shutdown(SSL *s, int mode) 2759 { 2760 s->internal->quiet_shutdown = mode; 2761 } 2762 2763 int 2764 SSL_get_quiet_shutdown(const SSL *s) 2765 { 2766 return (s->internal->quiet_shutdown); 2767 } 2768 2769 void 2770 SSL_set_shutdown(SSL *s, int mode) 2771 { 2772 s->internal->shutdown = mode; 2773 } 2774 2775 int 2776 SSL_get_shutdown(const SSL *s) 2777 { 2778 return (s->internal->shutdown); 2779 } 2780 2781 int 2782 SSL_version(const SSL *s) 2783 { 2784 return (s->version); 2785 } 2786 2787 SSL_CTX * 2788 SSL_get_SSL_CTX(const SSL *ssl) 2789 { 2790 return (ssl->ctx); 2791 } 2792 2793 SSL_CTX * 2794 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2795 { 2796 CERT *new_cert; 2797 2798 if (ctx == NULL) 2799 ctx = ssl->initial_ctx; 2800 if (ssl->ctx == ctx) 2801 return (ssl->ctx); 2802 2803 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2804 return NULL; 2805 ssl_cert_free(ssl->cert); 2806 ssl->cert = new_cert; 2807 2808 SSL_CTX_up_ref(ctx); 2809 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2810 ssl->ctx = ctx; 2811 2812 return (ssl->ctx); 2813 } 2814 2815 int 2816 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2817 { 2818 return (X509_STORE_set_default_paths(ctx->cert_store)); 2819 } 2820 2821 int 2822 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2823 const char *CApath) 2824 { 2825 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2826 } 2827 2828 int 2829 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2830 { 2831 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2832 } 2833 2834 void 2835 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2836 { 2837 ssl->internal->info_callback = cb; 2838 } 2839 2840 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2841 { 2842 return (ssl->internal->info_callback); 2843 } 2844 2845 int 2846 SSL_state(const SSL *ssl) 2847 { 2848 return (S3I(ssl)->hs.state); 2849 } 2850 2851 void 2852 SSL_set_state(SSL *ssl, int state) 2853 { 2854 S3I(ssl)->hs.state = state; 2855 } 2856 2857 void 2858 SSL_set_verify_result(SSL *ssl, long arg) 2859 { 2860 ssl->verify_result = arg; 2861 } 2862 2863 long 2864 SSL_get_verify_result(const SSL *ssl) 2865 { 2866 return (ssl->verify_result); 2867 } 2868 2869 int 2870 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2871 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2872 { 2873 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2874 new_func, dup_func, free_func)); 2875 } 2876 2877 int 2878 SSL_set_ex_data(SSL *s, int idx, void *arg) 2879 { 2880 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2881 } 2882 2883 void * 2884 SSL_get_ex_data(const SSL *s, int idx) 2885 { 2886 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2887 } 2888 2889 int 2890 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2891 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2892 { 2893 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2894 new_func, dup_func, free_func)); 2895 } 2896 2897 int 2898 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2899 { 2900 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2901 } 2902 2903 void * 2904 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2905 { 2906 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2907 } 2908 2909 int 2910 ssl_ok(SSL *s) 2911 { 2912 return (1); 2913 } 2914 2915 X509_STORE * 2916 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2917 { 2918 return (ctx->cert_store); 2919 } 2920 2921 void 2922 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2923 { 2924 X509_STORE_free(ctx->cert_store); 2925 ctx->cert_store = store; 2926 } 2927 2928 X509 * 2929 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2930 { 2931 if (ctx->internal->cert == NULL) 2932 return NULL; 2933 2934 return ctx->internal->cert->key->x509; 2935 } 2936 2937 int 2938 SSL_want(const SSL *s) 2939 { 2940 return (s->internal->rwstate); 2941 } 2942 2943 void 2944 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2945 int keylength)) 2946 { 2947 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2948 } 2949 2950 void 2951 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2952 int keylength)) 2953 { 2954 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2955 } 2956 2957 void 2958 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2959 int keylength)) 2960 { 2961 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2962 } 2963 2964 void 2965 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2966 int keylength)) 2967 { 2968 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2969 } 2970 2971 void 2972 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2973 int is_export, int keylength)) 2974 { 2975 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2976 (void (*)(void))ecdh); 2977 } 2978 2979 void 2980 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2981 int keylength)) 2982 { 2983 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2984 } 2985 2986 2987 void 2988 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2989 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2990 { 2991 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2992 (void (*)(void))cb); 2993 } 2994 2995 void 2996 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2997 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2998 { 2999 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3000 } 3001 3002 void 3003 SSL_set_debug(SSL *s, int debug) 3004 { 3005 s->internal->debug = debug; 3006 } 3007 3008 int 3009 SSL_cache_hit(SSL *s) 3010 { 3011 return (s->internal->hit); 3012 } 3013 3014 int 3015 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3016 { 3017 return ctx->internal->min_version; 3018 } 3019 3020 int 3021 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3022 { 3023 return ssl_version_set_min(ctx->method, version, 3024 ctx->internal->max_version, &ctx->internal->min_version); 3025 } 3026 3027 int 3028 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3029 { 3030 return ctx->internal->max_version; 3031 } 3032 3033 int 3034 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3035 { 3036 return ssl_version_set_max(ctx->method, version, 3037 ctx->internal->min_version, &ctx->internal->max_version); 3038 } 3039 3040 int 3041 SSL_get_min_proto_version(SSL *ssl) 3042 { 3043 return ssl->internal->min_version; 3044 } 3045 3046 int 3047 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3048 { 3049 return ssl_version_set_min(ssl->method, version, 3050 ssl->internal->max_version, &ssl->internal->min_version); 3051 } 3052 int 3053 SSL_get_max_proto_version(SSL *ssl) 3054 { 3055 return ssl->internal->max_version; 3056 } 3057 3058 int 3059 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3060 { 3061 return ssl_version_set_max(ssl->method, version, 3062 ssl->internal->min_version, &ssl->internal->max_version); 3063 } 3064 3065 static int 3066 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3067 { 3068 SSL_CIPHER const *a = a_; 3069 SSL_CIPHER const *b = b_; 3070 return ssl_cipher_id_cmp(a, b); 3071 } 3072 3073 SSL_CIPHER * 3074 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3075 { 3076 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3077 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3078 } 3079