1 /* $OpenBSD: ssl_lib.c,v 1.240 2021/01/09 10:34:29 tb 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 const char * 473 SSL_get0_peername(SSL *s) 474 { 475 return X509_VERIFY_PARAM_get0_peername(s->param); 476 } 477 478 X509_VERIFY_PARAM * 479 SSL_CTX_get0_param(SSL_CTX *ctx) 480 { 481 return (ctx->param); 482 } 483 484 int 485 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 486 { 487 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 488 } 489 490 X509_VERIFY_PARAM * 491 SSL_get0_param(SSL *ssl) 492 { 493 return (ssl->param); 494 } 495 496 int 497 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 498 { 499 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 500 } 501 502 void 503 SSL_free(SSL *s) 504 { 505 int i; 506 507 if (s == NULL) 508 return; 509 510 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 511 if (i > 0) 512 return; 513 514 X509_VERIFY_PARAM_free(s->param); 515 516 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 517 518 if (s->bbio != NULL) { 519 /* If the buffering BIO is in place, pop it off */ 520 if (s->bbio == s->wbio) { 521 s->wbio = BIO_pop(s->wbio); 522 } 523 BIO_free(s->bbio); 524 s->bbio = NULL; 525 } 526 527 if (s->rbio != s->wbio) 528 BIO_free_all(s->rbio); 529 BIO_free_all(s->wbio); 530 531 tls13_ctx_free(s->internal->tls13); 532 533 ssl3_release_init_buffer(s); 534 535 sk_SSL_CIPHER_free(s->cipher_list); 536 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 537 538 /* Make the next call work :-) */ 539 if (s->session != NULL) { 540 ssl_clear_bad_session(s); 541 SSL_SESSION_free(s->session); 542 } 543 544 ssl_clear_cipher_state(s); 545 546 ssl_cert_free(s->cert); 547 548 free(s->tlsext_hostname); 549 SSL_CTX_free(s->initial_ctx); 550 551 free(s->internal->tlsext_ecpointformatlist); 552 free(s->internal->tlsext_supportedgroups); 553 554 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 555 X509_EXTENSION_free); 556 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 557 free(s->internal->tlsext_ocsp_resp); 558 559 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 560 561 if (s->method != NULL) 562 s->method->internal->ssl_free(s); 563 564 SSL_CTX_free(s->ctx); 565 566 free(s->internal->alpn_client_proto_list); 567 568 #ifndef OPENSSL_NO_SRTP 569 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 570 #endif 571 572 tls12_record_layer_free(s->internal->rl); 573 574 free(s->internal); 575 free(s); 576 } 577 578 int 579 SSL_up_ref(SSL *s) 580 { 581 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 582 return (refs > 1) ? 1 : 0; 583 } 584 585 void 586 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 587 { 588 /* If the output buffering BIO is still in place, remove it */ 589 if (s->bbio != NULL) { 590 if (s->wbio == s->bbio) { 591 s->wbio = s->wbio->next_bio; 592 s->bbio->next_bio = NULL; 593 } 594 } 595 596 if (s->rbio != rbio && s->rbio != s->wbio) 597 BIO_free_all(s->rbio); 598 if (s->wbio != wbio) 599 BIO_free_all(s->wbio); 600 s->rbio = rbio; 601 s->wbio = wbio; 602 } 603 604 BIO * 605 SSL_get_rbio(const SSL *s) 606 { 607 return (s->rbio); 608 } 609 610 BIO * 611 SSL_get_wbio(const SSL *s) 612 { 613 return (s->wbio); 614 } 615 616 int 617 SSL_get_fd(const SSL *s) 618 { 619 return (SSL_get_rfd(s)); 620 } 621 622 int 623 SSL_get_rfd(const SSL *s) 624 { 625 int ret = -1; 626 BIO *b, *r; 627 628 b = SSL_get_rbio(s); 629 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 630 if (r != NULL) 631 BIO_get_fd(r, &ret); 632 return (ret); 633 } 634 635 int 636 SSL_get_wfd(const SSL *s) 637 { 638 int ret = -1; 639 BIO *b, *r; 640 641 b = SSL_get_wbio(s); 642 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 643 if (r != NULL) 644 BIO_get_fd(r, &ret); 645 return (ret); 646 } 647 648 int 649 SSL_set_fd(SSL *s, int fd) 650 { 651 int ret = 0; 652 BIO *bio = NULL; 653 654 bio = BIO_new(BIO_s_socket()); 655 656 if (bio == NULL) { 657 SSLerror(s, ERR_R_BUF_LIB); 658 goto err; 659 } 660 BIO_set_fd(bio, fd, BIO_NOCLOSE); 661 SSL_set_bio(s, bio, bio); 662 ret = 1; 663 err: 664 return (ret); 665 } 666 667 int 668 SSL_set_wfd(SSL *s, int fd) 669 { 670 int ret = 0; 671 BIO *bio = NULL; 672 673 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 674 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 675 bio = BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) { 678 SSLerror(s, ERR_R_BUF_LIB); 679 goto err; 680 } 681 BIO_set_fd(bio, fd, BIO_NOCLOSE); 682 SSL_set_bio(s, SSL_get_rbio(s), bio); 683 } else 684 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 685 ret = 1; 686 err: 687 return (ret); 688 } 689 690 int 691 SSL_set_rfd(SSL *s, int fd) 692 { 693 int ret = 0; 694 BIO *bio = NULL; 695 696 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 697 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 698 bio = BIO_new(BIO_s_socket()); 699 700 if (bio == NULL) { 701 SSLerror(s, ERR_R_BUF_LIB); 702 goto err; 703 } 704 BIO_set_fd(bio, fd, BIO_NOCLOSE); 705 SSL_set_bio(s, bio, SSL_get_wbio(s)); 706 } else 707 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 708 ret = 1; 709 err: 710 return (ret); 711 } 712 713 714 /* return length of latest Finished message we sent, copy to 'buf' */ 715 size_t 716 SSL_get_finished(const SSL *s, void *buf, size_t count) 717 { 718 size_t ret; 719 720 ret = S3I(s)->tmp.finish_md_len; 721 if (count > ret) 722 count = ret; 723 memcpy(buf, S3I(s)->tmp.finish_md, count); 724 return (ret); 725 } 726 727 /* return length of latest Finished message we expected, copy to 'buf' */ 728 size_t 729 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 730 { 731 size_t ret; 732 733 ret = S3I(s)->tmp.peer_finish_md_len; 734 if (count > ret) 735 count = ret; 736 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 737 return (ret); 738 } 739 740 741 int 742 SSL_get_verify_mode(const SSL *s) 743 { 744 return (s->verify_mode); 745 } 746 747 int 748 SSL_get_verify_depth(const SSL *s) 749 { 750 return (X509_VERIFY_PARAM_get_depth(s->param)); 751 } 752 753 int 754 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 755 { 756 return (s->internal->verify_callback); 757 } 758 759 int 760 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 761 { 762 return (ctx->verify_mode); 763 } 764 765 int 766 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 767 { 768 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 769 } 770 771 int 772 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 773 { 774 return (ctx->internal->default_verify_callback); 775 } 776 777 void 778 SSL_set_verify(SSL *s, int mode, 779 int (*callback)(int ok, X509_STORE_CTX *ctx)) 780 { 781 s->verify_mode = mode; 782 if (callback != NULL) 783 s->internal->verify_callback = callback; 784 } 785 786 void 787 SSL_set_verify_depth(SSL *s, int depth) 788 { 789 X509_VERIFY_PARAM_set_depth(s->param, depth); 790 } 791 792 void 793 SSL_set_read_ahead(SSL *s, int yes) 794 { 795 s->internal->read_ahead = yes; 796 } 797 798 int 799 SSL_get_read_ahead(const SSL *s) 800 { 801 return (s->internal->read_ahead); 802 } 803 804 int 805 SSL_pending(const SSL *s) 806 { 807 return (s->method->internal->ssl_pending(s)); 808 } 809 810 X509 * 811 SSL_get_peer_certificate(const SSL *s) 812 { 813 X509 *r; 814 815 if ((s == NULL) || (s->session == NULL)) 816 r = NULL; 817 else 818 r = s->session->peer; 819 820 if (r == NULL) 821 return (r); 822 823 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 824 825 return (r); 826 } 827 828 STACK_OF(X509) * 829 SSL_get_peer_cert_chain(const SSL *s) 830 { 831 STACK_OF(X509) *r; 832 833 if ((s == NULL) || (s->session == NULL) || 834 (SSI(s)->sess_cert == NULL)) 835 r = NULL; 836 else 837 r = SSI(s)->sess_cert->cert_chain; 838 839 /* 840 * If we are a client, cert_chain includes the peer's own 841 * certificate; 842 * if we are a server, it does not. 843 */ 844 return (r); 845 } 846 847 /* 848 * Now in theory, since the calling process own 't' it should be safe to 849 * modify. We need to be able to read f without being hassled 850 */ 851 int 852 SSL_copy_session_id(SSL *t, const SSL *f) 853 { 854 CERT *tmp; 855 856 /* Do we need to do SSL locking? */ 857 if (!SSL_set_session(t, SSL_get_session(f))) 858 return 0; 859 860 /* What if we are set up for one protocol but want to talk another? */ 861 if (t->method != f->method) { 862 t->method->internal->ssl_free(t); 863 t->method = f->method; 864 if (!t->method->internal->ssl_new(t)) 865 return 0; 866 } 867 868 tmp = t->cert; 869 if (f->cert != NULL) { 870 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 871 t->cert = f->cert; 872 } else 873 t->cert = NULL; 874 ssl_cert_free(tmp); 875 876 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 877 return 0; 878 879 return 1; 880 } 881 882 /* Fix this so it checks all the valid key/cert options */ 883 int 884 SSL_CTX_check_private_key(const SSL_CTX *ctx) 885 { 886 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 887 (ctx->internal->cert->key->x509 == NULL)) { 888 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 889 return (0); 890 } 891 if (ctx->internal->cert->key->privatekey == NULL) { 892 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 893 return (0); 894 } 895 return (X509_check_private_key(ctx->internal->cert->key->x509, 896 ctx->internal->cert->key->privatekey)); 897 } 898 899 /* Fix this function so that it takes an optional type parameter */ 900 int 901 SSL_check_private_key(const SSL *ssl) 902 { 903 if (ssl == NULL) { 904 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 905 return (0); 906 } 907 if (ssl->cert == NULL) { 908 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 909 return (0); 910 } 911 if (ssl->cert->key->x509 == NULL) { 912 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 913 return (0); 914 } 915 if (ssl->cert->key->privatekey == NULL) { 916 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 917 return (0); 918 } 919 return (X509_check_private_key(ssl->cert->key->x509, 920 ssl->cert->key->privatekey)); 921 } 922 923 int 924 SSL_accept(SSL *s) 925 { 926 if (s->internal->handshake_func == NULL) 927 SSL_set_accept_state(s); /* Not properly initialized yet */ 928 929 return (s->method->internal->ssl_accept(s)); 930 } 931 932 int 933 SSL_connect(SSL *s) 934 { 935 if (s->internal->handshake_func == NULL) 936 SSL_set_connect_state(s); /* Not properly initialized yet */ 937 938 return (s->method->internal->ssl_connect(s)); 939 } 940 941 int 942 SSL_is_dtls(const SSL *s) 943 { 944 return s->method->internal->dtls; 945 } 946 947 int 948 SSL_is_server(const SSL *s) 949 { 950 return s->server; 951 } 952 953 static long 954 ssl_get_default_timeout() 955 { 956 /* 957 * 2 hours, the 24 hours mentioned in the TLSv1 spec 958 * is way too long for http, the cache would over fill. 959 */ 960 return (2 * 60 * 60); 961 } 962 963 long 964 SSL_get_default_timeout(const SSL *s) 965 { 966 return (ssl_get_default_timeout()); 967 } 968 969 int 970 SSL_read(SSL *s, void *buf, int num) 971 { 972 if (s->internal->handshake_func == NULL) { 973 SSLerror(s, SSL_R_UNINITIALIZED); 974 return (-1); 975 } 976 977 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 978 s->internal->rwstate = SSL_NOTHING; 979 return (0); 980 } 981 return ssl3_read(s, buf, num); 982 } 983 984 int 985 SSL_peek(SSL *s, void *buf, int num) 986 { 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(s, SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 993 return (0); 994 } 995 return ssl3_peek(s, buf, num); 996 } 997 998 int 999 SSL_write(SSL *s, const void *buf, int num) 1000 { 1001 if (s->internal->handshake_func == NULL) { 1002 SSLerror(s, SSL_R_UNINITIALIZED); 1003 return (-1); 1004 } 1005 1006 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1007 s->internal->rwstate = SSL_NOTHING; 1008 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1009 return (-1); 1010 } 1011 return ssl3_write(s, buf, num); 1012 } 1013 1014 uint32_t 1015 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1016 { 1017 return 0; 1018 } 1019 1020 int 1021 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1022 { 1023 return 1; 1024 } 1025 1026 uint32_t 1027 SSL_get_max_early_data(const SSL *s) 1028 { 1029 return 0; 1030 } 1031 1032 int 1033 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1034 { 1035 return 1; 1036 } 1037 1038 int 1039 SSL_get_early_data_status(const SSL *s) 1040 { 1041 return SSL_EARLY_DATA_REJECTED; 1042 } 1043 1044 int 1045 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1046 { 1047 *readbytes = 0; 1048 1049 if (!s->server) { 1050 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1051 return SSL_READ_EARLY_DATA_ERROR; 1052 } 1053 1054 return SSL_READ_EARLY_DATA_FINISH; 1055 } 1056 1057 int 1058 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1059 { 1060 *written = 0; 1061 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1062 return 0; 1063 } 1064 1065 int 1066 SSL_shutdown(SSL *s) 1067 { 1068 /* 1069 * Note that this function behaves differently from what one might 1070 * expect. Return values are 0 for no success (yet), 1071 * 1 for success; but calling it once is usually not enough, 1072 * even if blocking I/O is used (see ssl3_shutdown). 1073 */ 1074 1075 if (s->internal->handshake_func == NULL) { 1076 SSLerror(s, SSL_R_UNINITIALIZED); 1077 return (-1); 1078 } 1079 1080 if (s != NULL && !SSL_in_init(s)) 1081 return (s->method->internal->ssl_shutdown(s)); 1082 1083 return (1); 1084 } 1085 1086 int 1087 SSL_renegotiate(SSL *s) 1088 { 1089 if (s->internal->renegotiate == 0) 1090 s->internal->renegotiate = 1; 1091 1092 s->internal->new_session = 1; 1093 1094 return (s->method->internal->ssl_renegotiate(s)); 1095 } 1096 1097 int 1098 SSL_renegotiate_abbreviated(SSL *s) 1099 { 1100 if (s->internal->renegotiate == 0) 1101 s->internal->renegotiate = 1; 1102 1103 s->internal->new_session = 0; 1104 1105 return (s->method->internal->ssl_renegotiate(s)); 1106 } 1107 1108 int 1109 SSL_renegotiate_pending(SSL *s) 1110 { 1111 /* 1112 * Becomes true when negotiation is requested; 1113 * false again once a handshake has finished. 1114 */ 1115 return (s->internal->renegotiate != 0); 1116 } 1117 1118 long 1119 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1120 { 1121 long l; 1122 1123 switch (cmd) { 1124 case SSL_CTRL_GET_READ_AHEAD: 1125 return (s->internal->read_ahead); 1126 case SSL_CTRL_SET_READ_AHEAD: 1127 l = s->internal->read_ahead; 1128 s->internal->read_ahead = larg; 1129 return (l); 1130 1131 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1132 s->internal->msg_callback_arg = parg; 1133 return (1); 1134 1135 case SSL_CTRL_OPTIONS: 1136 return (s->internal->options|=larg); 1137 case SSL_CTRL_CLEAR_OPTIONS: 1138 return (s->internal->options&=~larg); 1139 case SSL_CTRL_MODE: 1140 return (s->internal->mode|=larg); 1141 case SSL_CTRL_CLEAR_MODE: 1142 return (s->internal->mode &=~larg); 1143 case SSL_CTRL_GET_MAX_CERT_LIST: 1144 return (s->internal->max_cert_list); 1145 case SSL_CTRL_SET_MAX_CERT_LIST: 1146 l = s->internal->max_cert_list; 1147 s->internal->max_cert_list = larg; 1148 return (l); 1149 case SSL_CTRL_SET_MTU: 1150 #ifndef OPENSSL_NO_DTLS1 1151 if (larg < (long)dtls1_min_mtu()) 1152 return (0); 1153 #endif 1154 if (SSL_is_dtls(s)) { 1155 D1I(s)->mtu = larg; 1156 return (larg); 1157 } 1158 return (0); 1159 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1160 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1161 return (0); 1162 s->max_send_fragment = larg; 1163 return (1); 1164 case SSL_CTRL_GET_RI_SUPPORT: 1165 if (s->s3) 1166 return (S3I(s)->send_connection_binding); 1167 else return (0); 1168 default: 1169 if (SSL_is_dtls(s)) 1170 return dtls1_ctrl(s, cmd, larg, parg); 1171 return ssl3_ctrl(s, cmd, larg, parg); 1172 } 1173 } 1174 1175 long 1176 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1177 { 1178 switch (cmd) { 1179 case SSL_CTRL_SET_MSG_CALLBACK: 1180 s->internal->msg_callback = (void (*)(int write_p, int version, 1181 int content_type, const void *buf, size_t len, 1182 SSL *ssl, void *arg))(fp); 1183 return (1); 1184 1185 default: 1186 return (ssl3_callback_ctrl(s, cmd, fp)); 1187 } 1188 } 1189 1190 struct lhash_st_SSL_SESSION * 1191 SSL_CTX_sessions(SSL_CTX *ctx) 1192 { 1193 return (ctx->internal->sessions); 1194 } 1195 1196 long 1197 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1198 { 1199 long l; 1200 1201 switch (cmd) { 1202 case SSL_CTRL_GET_READ_AHEAD: 1203 return (ctx->internal->read_ahead); 1204 case SSL_CTRL_SET_READ_AHEAD: 1205 l = ctx->internal->read_ahead; 1206 ctx->internal->read_ahead = larg; 1207 return (l); 1208 1209 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1210 ctx->internal->msg_callback_arg = parg; 1211 return (1); 1212 1213 case SSL_CTRL_GET_MAX_CERT_LIST: 1214 return (ctx->internal->max_cert_list); 1215 case SSL_CTRL_SET_MAX_CERT_LIST: 1216 l = ctx->internal->max_cert_list; 1217 ctx->internal->max_cert_list = larg; 1218 return (l); 1219 1220 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1221 l = ctx->internal->session_cache_size; 1222 ctx->internal->session_cache_size = larg; 1223 return (l); 1224 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1225 return (ctx->internal->session_cache_size); 1226 case SSL_CTRL_SET_SESS_CACHE_MODE: 1227 l = ctx->internal->session_cache_mode; 1228 ctx->internal->session_cache_mode = larg; 1229 return (l); 1230 case SSL_CTRL_GET_SESS_CACHE_MODE: 1231 return (ctx->internal->session_cache_mode); 1232 1233 case SSL_CTRL_SESS_NUMBER: 1234 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1235 case SSL_CTRL_SESS_CONNECT: 1236 return (ctx->internal->stats.sess_connect); 1237 case SSL_CTRL_SESS_CONNECT_GOOD: 1238 return (ctx->internal->stats.sess_connect_good); 1239 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1240 return (ctx->internal->stats.sess_connect_renegotiate); 1241 case SSL_CTRL_SESS_ACCEPT: 1242 return (ctx->internal->stats.sess_accept); 1243 case SSL_CTRL_SESS_ACCEPT_GOOD: 1244 return (ctx->internal->stats.sess_accept_good); 1245 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1246 return (ctx->internal->stats.sess_accept_renegotiate); 1247 case SSL_CTRL_SESS_HIT: 1248 return (ctx->internal->stats.sess_hit); 1249 case SSL_CTRL_SESS_CB_HIT: 1250 return (ctx->internal->stats.sess_cb_hit); 1251 case SSL_CTRL_SESS_MISSES: 1252 return (ctx->internal->stats.sess_miss); 1253 case SSL_CTRL_SESS_TIMEOUTS: 1254 return (ctx->internal->stats.sess_timeout); 1255 case SSL_CTRL_SESS_CACHE_FULL: 1256 return (ctx->internal->stats.sess_cache_full); 1257 case SSL_CTRL_OPTIONS: 1258 return (ctx->internal->options|=larg); 1259 case SSL_CTRL_CLEAR_OPTIONS: 1260 return (ctx->internal->options&=~larg); 1261 case SSL_CTRL_MODE: 1262 return (ctx->internal->mode|=larg); 1263 case SSL_CTRL_CLEAR_MODE: 1264 return (ctx->internal->mode&=~larg); 1265 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1266 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1267 return (0); 1268 ctx->internal->max_send_fragment = larg; 1269 return (1); 1270 default: 1271 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1272 } 1273 } 1274 1275 long 1276 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1277 { 1278 switch (cmd) { 1279 case SSL_CTRL_SET_MSG_CALLBACK: 1280 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1281 int content_type, const void *buf, size_t len, SSL *ssl, 1282 void *arg))(fp); 1283 return (1); 1284 1285 default: 1286 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1287 } 1288 } 1289 1290 int 1291 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1292 { 1293 long l; 1294 1295 l = a->id - b->id; 1296 if (l == 0L) 1297 return (0); 1298 else 1299 return ((l > 0) ? 1:-1); 1300 } 1301 1302 STACK_OF(SSL_CIPHER) * 1303 SSL_get_ciphers(const SSL *s) 1304 { 1305 if (s == NULL) 1306 return (NULL); 1307 if (s->cipher_list != NULL) 1308 return (s->cipher_list); 1309 1310 return (s->ctx->cipher_list); 1311 } 1312 1313 STACK_OF(SSL_CIPHER) * 1314 SSL_get_client_ciphers(const SSL *s) 1315 { 1316 if (s == NULL || s->session == NULL || !s->server) 1317 return NULL; 1318 return s->session->ciphers; 1319 } 1320 1321 STACK_OF(SSL_CIPHER) * 1322 SSL_get1_supported_ciphers(SSL *s) 1323 { 1324 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1325 const SSL_CIPHER *cipher; 1326 uint16_t min_vers, max_vers; 1327 int i; 1328 1329 if (s == NULL) 1330 return NULL; 1331 if (!ssl_supported_version_range(s, &min_vers, &max_vers)) 1332 return NULL; 1333 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1334 return NULL; 1335 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1336 return NULL; 1337 1338 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1339 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1340 goto err; 1341 if (!ssl_cipher_allowed_in_version_range(cipher, min_vers, 1342 max_vers)) 1343 continue; 1344 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1345 goto err; 1346 } 1347 1348 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1349 return supported_ciphers; 1350 1351 err: 1352 sk_SSL_CIPHER_free(supported_ciphers); 1353 return NULL; 1354 } 1355 1356 /* See if we have any ECC cipher suites. */ 1357 int 1358 ssl_has_ecc_ciphers(SSL *s) 1359 { 1360 STACK_OF(SSL_CIPHER) *ciphers; 1361 unsigned long alg_k, alg_a; 1362 SSL_CIPHER *cipher; 1363 int i; 1364 1365 if (s->version == DTLS1_VERSION) 1366 return 0; 1367 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1368 return 0; 1369 1370 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1371 cipher = sk_SSL_CIPHER_value(ciphers, i); 1372 1373 alg_k = cipher->algorithm_mkey; 1374 alg_a = cipher->algorithm_auth; 1375 1376 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1377 return 1; 1378 } 1379 1380 return 0; 1381 } 1382 1383 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1384 const char * 1385 SSL_get_cipher_list(const SSL *s, int n) 1386 { 1387 STACK_OF(SSL_CIPHER) *ciphers; 1388 const SSL_CIPHER *cipher; 1389 1390 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1391 return (NULL); 1392 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1393 return (NULL); 1394 1395 return (cipher->name); 1396 } 1397 1398 STACK_OF(SSL_CIPHER) * 1399 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1400 { 1401 if (ctx == NULL) 1402 return NULL; 1403 return ctx->cipher_list; 1404 } 1405 1406 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1407 int 1408 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1409 { 1410 STACK_OF(SSL_CIPHER) *ciphers; 1411 1412 /* 1413 * ssl_create_cipher_list may return an empty stack if it was unable to 1414 * find a cipher matching the given rule string (for example if the 1415 * rule string specifies a cipher which has been disabled). This is not 1416 * an error as far as ssl_create_cipher_list is concerned, and hence 1417 * ctx->cipher_list has been updated. 1418 */ 1419 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1420 ctx->internal->cipher_list_tls13, str); 1421 if (ciphers == NULL) { 1422 return (0); 1423 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1424 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1425 return (0); 1426 } 1427 return (1); 1428 } 1429 1430 int 1431 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1432 { 1433 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1434 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1435 return 0; 1436 } 1437 if (!ssl_merge_cipherlists(ctx->cipher_list, 1438 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1439 return 0; 1440 1441 return 1; 1442 } 1443 1444 /* Specify the ciphers to be used by the SSL. */ 1445 int 1446 SSL_set_cipher_list(SSL *s, const char *str) 1447 { 1448 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1449 1450 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1451 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1452 1453 /* See comment in SSL_CTX_set_cipher_list. */ 1454 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1455 ciphers_tls13, str); 1456 if (ciphers == NULL) { 1457 return (0); 1458 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1459 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1460 return (0); 1461 } 1462 return (1); 1463 } 1464 1465 int 1466 SSL_set_ciphersuites(SSL *s, const char *str) 1467 { 1468 STACK_OF(SSL_CIPHER) *ciphers; 1469 1470 if ((ciphers = s->cipher_list) == NULL) 1471 ciphers = s->ctx->cipher_list; 1472 1473 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1474 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1475 return (0); 1476 } 1477 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1478 &s->cipher_list)) 1479 return 0; 1480 1481 return 1; 1482 } 1483 1484 char * 1485 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1486 { 1487 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1488 const SSL_CIPHER *cipher; 1489 size_t curlen = 0; 1490 char *end; 1491 int i; 1492 1493 if (!s->server || s->session == NULL || len < 2) 1494 return NULL; 1495 1496 if ((client_ciphers = s->session->ciphers) == NULL) 1497 return NULL; 1498 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1499 return NULL; 1500 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1501 sk_SSL_CIPHER_num(server_ciphers) == 0) 1502 return NULL; 1503 1504 buf[0] = '\0'; 1505 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1506 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1507 1508 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1509 continue; 1510 1511 end = buf + curlen; 1512 if (strlcat(buf, cipher->name, len) >= len || 1513 (curlen = strlcat(buf, ":", len)) >= len) { 1514 /* remove truncated cipher from list */ 1515 *end = '\0'; 1516 break; 1517 } 1518 } 1519 /* remove trailing colon */ 1520 if ((end = strrchr(buf, ':')) != NULL) 1521 *end = '\0'; 1522 return buf; 1523 } 1524 1525 /* 1526 * Return a servername extension value if provided in Client Hello, or NULL. 1527 * So far, only host_name types are defined (RFC 3546). 1528 */ 1529 const char * 1530 SSL_get_servername(const SSL *s, const int type) 1531 { 1532 if (type != TLSEXT_NAMETYPE_host_name) 1533 return (NULL); 1534 1535 return (s->session && !s->tlsext_hostname ? 1536 s->session->tlsext_hostname : 1537 s->tlsext_hostname); 1538 } 1539 1540 int 1541 SSL_get_servername_type(const SSL *s) 1542 { 1543 if (s->session && 1544 (!s->tlsext_hostname ? 1545 s->session->tlsext_hostname : s->tlsext_hostname)) 1546 return (TLSEXT_NAMETYPE_host_name); 1547 return (-1); 1548 } 1549 1550 /* 1551 * SSL_select_next_proto implements standard protocol selection. It is 1552 * expected that this function is called from the callback set by 1553 * SSL_CTX_set_alpn_select_cb. 1554 * 1555 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1556 * strings. The length byte itself is not included in the length. A byte 1557 * string of length 0 is invalid. No byte string may be truncated. 1558 * 1559 * It returns either: 1560 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1561 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1562 */ 1563 int 1564 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1565 const unsigned char *server, unsigned int server_len, 1566 const unsigned char *client, unsigned int client_len) 1567 { 1568 unsigned int i, j; 1569 const unsigned char *result; 1570 int status = OPENSSL_NPN_UNSUPPORTED; 1571 1572 /* 1573 * For each protocol in server preference order, 1574 * see if we support it. 1575 */ 1576 for (i = 0; i < server_len; ) { 1577 for (j = 0; j < client_len; ) { 1578 if (server[i] == client[j] && 1579 memcmp(&server[i + 1], 1580 &client[j + 1], server[i]) == 0) { 1581 /* We found a match */ 1582 result = &server[i]; 1583 status = OPENSSL_NPN_NEGOTIATED; 1584 goto found; 1585 } 1586 j += client[j]; 1587 j++; 1588 } 1589 i += server[i]; 1590 i++; 1591 } 1592 1593 /* There's no overlap between our protocols and the server's list. */ 1594 result = client; 1595 status = OPENSSL_NPN_NO_OVERLAP; 1596 1597 found: 1598 *out = (unsigned char *) result + 1; 1599 *outlen = result[0]; 1600 return (status); 1601 } 1602 1603 /* SSL_get0_next_proto_negotiated is deprecated. */ 1604 void 1605 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1606 unsigned int *len) 1607 { 1608 *data = NULL; 1609 *len = 0; 1610 } 1611 1612 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1613 void 1614 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1615 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1616 { 1617 } 1618 1619 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1620 void 1621 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1622 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1623 unsigned int inlen, void *arg), void *arg) 1624 { 1625 } 1626 1627 /* 1628 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1629 * protocols, which must be in wire-format (i.e. a series of non-empty, 1630 * 8-bit length-prefixed strings). Returns 0 on success. 1631 */ 1632 int 1633 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1634 unsigned int protos_len) 1635 { 1636 int failed = 1; 1637 1638 if (protos == NULL || protos_len == 0) 1639 goto err; 1640 1641 free(ctx->internal->alpn_client_proto_list); 1642 ctx->internal->alpn_client_proto_list = NULL; 1643 ctx->internal->alpn_client_proto_list_len = 0; 1644 1645 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1646 == NULL) 1647 goto err; 1648 ctx->internal->alpn_client_proto_list_len = protos_len; 1649 1650 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1651 1652 failed = 0; 1653 1654 err: 1655 /* NOTE: Return values are the reverse of what you expect. */ 1656 return (failed); 1657 } 1658 1659 /* 1660 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1661 * protocols, which must be in wire-format (i.e. a series of non-empty, 1662 * 8-bit length-prefixed strings). Returns 0 on success. 1663 */ 1664 int 1665 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1666 unsigned int protos_len) 1667 { 1668 int failed = 1; 1669 1670 if (protos == NULL || protos_len == 0) 1671 goto err; 1672 1673 free(ssl->internal->alpn_client_proto_list); 1674 ssl->internal->alpn_client_proto_list = NULL; 1675 ssl->internal->alpn_client_proto_list_len = 0; 1676 1677 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1678 == NULL) 1679 goto err; 1680 ssl->internal->alpn_client_proto_list_len = protos_len; 1681 1682 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1683 1684 failed = 0; 1685 1686 err: 1687 /* NOTE: Return values are the reverse of what you expect. */ 1688 return (failed); 1689 } 1690 1691 /* 1692 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1693 * ClientHello processing in order to select an ALPN protocol from the 1694 * client's list of offered protocols. 1695 */ 1696 void 1697 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1698 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1699 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1700 { 1701 ctx->internal->alpn_select_cb = cb; 1702 ctx->internal->alpn_select_cb_arg = arg; 1703 } 1704 1705 /* 1706 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1707 * it sets data to point to len bytes of protocol name (not including the 1708 * leading length-prefix byte). If the server didn't respond with* a negotiated 1709 * protocol then len will be zero. 1710 */ 1711 void 1712 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1713 unsigned int *len) 1714 { 1715 *data = NULL; 1716 *len = 0; 1717 1718 *data = ssl->s3->internal->alpn_selected; 1719 *len = ssl->s3->internal->alpn_selected_len; 1720 } 1721 1722 int 1723 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1724 const char *label, size_t llen, const unsigned char *p, size_t plen, 1725 int use_context) 1726 { 1727 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1728 if (!use_context) { 1729 p = NULL; 1730 plen = 0; 1731 } 1732 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1733 out, olen); 1734 } 1735 1736 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1737 use_context)); 1738 } 1739 1740 static unsigned long 1741 ssl_session_hash(const SSL_SESSION *a) 1742 { 1743 unsigned long l; 1744 1745 l = (unsigned long) 1746 ((unsigned int) a->session_id[0] )| 1747 ((unsigned int) a->session_id[1]<< 8L)| 1748 ((unsigned long)a->session_id[2]<<16L)| 1749 ((unsigned long)a->session_id[3]<<24L); 1750 return (l); 1751 } 1752 1753 /* 1754 * NB: If this function (or indeed the hash function which uses a sort of 1755 * coarser function than this one) is changed, ensure 1756 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1757 * able to construct an SSL_SESSION that will collide with any existing session 1758 * with a matching session ID. 1759 */ 1760 static int 1761 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1762 { 1763 if (a->ssl_version != b->ssl_version) 1764 return (1); 1765 if (a->session_id_length != b->session_id_length) 1766 return (1); 1767 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1768 return (1); 1769 return (0); 1770 } 1771 1772 /* 1773 * These wrapper functions should remain rather than redeclaring 1774 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1775 * variable. The reason is that the functions aren't static, they're exposed via 1776 * ssl.h. 1777 */ 1778 static unsigned long 1779 ssl_session_LHASH_HASH(const void *arg) 1780 { 1781 const SSL_SESSION *a = arg; 1782 1783 return ssl_session_hash(a); 1784 } 1785 1786 static int 1787 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1788 { 1789 const SSL_SESSION *a = arg1; 1790 const SSL_SESSION *b = arg2; 1791 1792 return ssl_session_cmp(a, b); 1793 } 1794 1795 SSL_CTX * 1796 SSL_CTX_new(const SSL_METHOD *meth) 1797 { 1798 SSL_CTX *ret; 1799 1800 if (!OPENSSL_init_ssl(0, NULL)) { 1801 SSLerrorx(SSL_R_LIBRARY_BUG); 1802 return (NULL); 1803 } 1804 1805 if (meth == NULL) { 1806 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1807 return (NULL); 1808 } 1809 1810 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1811 SSLerrorx(ERR_R_MALLOC_FAILURE); 1812 return (NULL); 1813 } 1814 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1815 free(ret); 1816 SSLerrorx(ERR_R_MALLOC_FAILURE); 1817 return (NULL); 1818 } 1819 1820 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1821 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1822 goto err; 1823 } 1824 1825 ret->method = meth; 1826 ret->internal->min_version = meth->internal->min_version; 1827 ret->internal->max_version = meth->internal->max_version; 1828 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1829 1830 ret->cert_store = NULL; 1831 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1832 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1833 ret->internal->session_cache_head = NULL; 1834 ret->internal->session_cache_tail = NULL; 1835 1836 /* We take the system default */ 1837 ret->session_timeout = ssl_get_default_timeout(); 1838 1839 ret->internal->new_session_cb = 0; 1840 ret->internal->remove_session_cb = 0; 1841 ret->internal->get_session_cb = 0; 1842 ret->internal->generate_session_id = 0; 1843 1844 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1845 1846 ret->references = 1; 1847 ret->internal->quiet_shutdown = 0; 1848 1849 ret->internal->info_callback = NULL; 1850 1851 ret->internal->app_verify_callback = 0; 1852 ret->internal->app_verify_arg = NULL; 1853 1854 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1855 ret->internal->read_ahead = 0; 1856 ret->internal->msg_callback = 0; 1857 ret->internal->msg_callback_arg = NULL; 1858 ret->verify_mode = SSL_VERIFY_NONE; 1859 ret->sid_ctx_length = 0; 1860 ret->internal->default_verify_callback = NULL; 1861 1862 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1863 goto err; 1864 1865 ret->default_passwd_callback = 0; 1866 ret->default_passwd_callback_userdata = NULL; 1867 ret->internal->client_cert_cb = 0; 1868 ret->internal->app_gen_cookie_cb = 0; 1869 ret->internal->app_verify_cookie_cb = 0; 1870 1871 ret->internal->sessions = lh_SSL_SESSION_new(); 1872 if (ret->internal->sessions == NULL) 1873 goto err; 1874 ret->cert_store = X509_STORE_new(); 1875 if (ret->cert_store == NULL) 1876 goto err; 1877 1878 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1879 NULL, SSL_DEFAULT_CIPHER_LIST); 1880 if (ret->cipher_list == NULL || 1881 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1882 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1883 goto err2; 1884 } 1885 1886 ret->param = X509_VERIFY_PARAM_new(); 1887 if (!ret->param) 1888 goto err; 1889 1890 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1891 goto err; 1892 1893 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1894 1895 ret->extra_certs = NULL; 1896 1897 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1898 1899 ret->internal->tlsext_servername_callback = 0; 1900 ret->internal->tlsext_servername_arg = NULL; 1901 1902 /* Setup RFC4507 ticket keys */ 1903 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1904 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1905 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1906 1907 ret->internal->tlsext_status_cb = 0; 1908 ret->internal->tlsext_status_arg = NULL; 1909 1910 #ifndef OPENSSL_NO_ENGINE 1911 ret->internal->client_cert_engine = NULL; 1912 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1913 #define eng_strx(x) #x 1914 #define eng_str(x) eng_strx(x) 1915 /* Use specific client engine automatically... ignore errors */ 1916 { 1917 ENGINE *eng; 1918 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1919 if (!eng) { 1920 ERR_clear_error(); 1921 ENGINE_load_builtin_engines(); 1922 eng = ENGINE_by_id(eng_str( 1923 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1924 } 1925 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1926 ERR_clear_error(); 1927 } 1928 #endif 1929 #endif 1930 /* 1931 * Default is to connect to non-RI servers. When RI is more widely 1932 * deployed might change this. 1933 */ 1934 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1935 1936 return (ret); 1937 err: 1938 SSLerrorx(ERR_R_MALLOC_FAILURE); 1939 err2: 1940 SSL_CTX_free(ret); 1941 return (NULL); 1942 } 1943 1944 void 1945 SSL_CTX_free(SSL_CTX *ctx) 1946 { 1947 int i; 1948 1949 if (ctx == NULL) 1950 return; 1951 1952 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1953 if (i > 0) 1954 return; 1955 1956 X509_VERIFY_PARAM_free(ctx->param); 1957 1958 /* 1959 * Free internal session cache. However: the remove_cb() may reference 1960 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1961 * after the sessions were flushed. 1962 * As the ex_data handling routines might also touch the session cache, 1963 * the most secure solution seems to be: empty (flush) the cache, then 1964 * free ex_data, then finally free the cache. 1965 * (See ticket [openssl.org #212].) 1966 */ 1967 if (ctx->internal->sessions != NULL) 1968 SSL_CTX_flush_sessions(ctx, 0); 1969 1970 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1971 1972 lh_SSL_SESSION_free(ctx->internal->sessions); 1973 1974 X509_STORE_free(ctx->cert_store); 1975 sk_SSL_CIPHER_free(ctx->cipher_list); 1976 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 1977 ssl_cert_free(ctx->internal->cert); 1978 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1979 sk_X509_pop_free(ctx->extra_certs, X509_free); 1980 1981 #ifndef OPENSSL_NO_SRTP 1982 if (ctx->internal->srtp_profiles) 1983 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1984 #endif 1985 1986 #ifndef OPENSSL_NO_ENGINE 1987 ENGINE_finish(ctx->internal->client_cert_engine); 1988 #endif 1989 1990 free(ctx->internal->tlsext_ecpointformatlist); 1991 free(ctx->internal->tlsext_supportedgroups); 1992 1993 free(ctx->internal->alpn_client_proto_list); 1994 1995 free(ctx->internal); 1996 free(ctx); 1997 } 1998 1999 int 2000 SSL_CTX_up_ref(SSL_CTX *ctx) 2001 { 2002 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2003 return ((refs > 1) ? 1 : 0); 2004 } 2005 2006 pem_password_cb * 2007 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2008 { 2009 return (ctx->default_passwd_callback); 2010 } 2011 2012 void 2013 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2014 { 2015 ctx->default_passwd_callback = cb; 2016 } 2017 2018 void * 2019 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2020 { 2021 return ctx->default_passwd_callback_userdata; 2022 } 2023 2024 void 2025 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2026 { 2027 ctx->default_passwd_callback_userdata = u; 2028 } 2029 2030 void 2031 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2032 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2033 { 2034 ctx->internal->app_verify_callback = cb; 2035 ctx->internal->app_verify_arg = arg; 2036 } 2037 2038 void 2039 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2040 { 2041 ctx->verify_mode = mode; 2042 ctx->internal->default_verify_callback = cb; 2043 } 2044 2045 void 2046 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2047 { 2048 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2049 } 2050 2051 static int 2052 ssl_cert_can_sign(X509 *x) 2053 { 2054 /* This call populates extension flags (ex_flags). */ 2055 X509_check_purpose(x, -1, 0); 2056 2057 /* Key usage, if present, must allow signing. */ 2058 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2059 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 2060 } 2061 2062 void 2063 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2064 { 2065 unsigned long mask_a, mask_k; 2066 CERT_PKEY *cpk; 2067 2068 if (c == NULL) 2069 return; 2070 2071 mask_a = SSL_aNULL | SSL_aTLS1_3; 2072 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2073 2074 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2075 mask_k |= SSL_kDHE; 2076 2077 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2078 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2079 if (ssl_cert_can_sign(cpk->x509)) 2080 mask_a |= SSL_aECDSA; 2081 } 2082 2083 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2084 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2085 mask_k |= SSL_kGOST; 2086 mask_a |= SSL_aGOST01; 2087 } 2088 2089 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2090 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2091 mask_a |= SSL_aRSA; 2092 mask_k |= SSL_kRSA; 2093 } 2094 2095 c->mask_k = mask_k; 2096 c->mask_a = mask_a; 2097 c->valid = 1; 2098 } 2099 2100 /* See if this handshake is using an ECC cipher suite. */ 2101 int 2102 ssl_using_ecc_cipher(SSL *s) 2103 { 2104 unsigned long alg_a, alg_k; 2105 2106 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2107 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2108 2109 return SSI(s)->tlsext_ecpointformatlist != NULL && 2110 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2111 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2112 } 2113 2114 int 2115 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2116 { 2117 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2118 unsigned long alg_a; 2119 2120 alg_a = cs->algorithm_auth; 2121 2122 if (alg_a & SSL_aECDSA) { 2123 /* This call populates extension flags (ex_flags). */ 2124 X509_check_purpose(x, -1, 0); 2125 2126 /* Key usage, if present, must allow signing. */ 2127 if ((x->ex_flags & EXFLAG_KUSAGE) && 2128 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2129 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2130 return (0); 2131 } 2132 } 2133 2134 return (1); 2135 } 2136 2137 CERT_PKEY * 2138 ssl_get_server_send_pkey(const SSL *s) 2139 { 2140 unsigned long alg_a; 2141 CERT *c; 2142 int i; 2143 2144 c = s->cert; 2145 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2146 2147 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2148 2149 if (alg_a & SSL_aECDSA) { 2150 i = SSL_PKEY_ECC; 2151 } else if (alg_a & SSL_aRSA) { 2152 i = SSL_PKEY_RSA; 2153 } else if (alg_a & SSL_aGOST01) { 2154 i = SSL_PKEY_GOST01; 2155 } else { /* if (alg_a & SSL_aNULL) */ 2156 SSLerror(s, ERR_R_INTERNAL_ERROR); 2157 return (NULL); 2158 } 2159 2160 return (c->pkeys + i); 2161 } 2162 2163 EVP_PKEY * 2164 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2165 const struct ssl_sigalg **sap) 2166 { 2167 const struct ssl_sigalg *sigalg = NULL; 2168 EVP_PKEY *pkey = NULL; 2169 unsigned long alg_a; 2170 CERT *c; 2171 int idx = -1; 2172 2173 alg_a = cipher->algorithm_auth; 2174 c = s->cert; 2175 2176 if (alg_a & SSL_aRSA) { 2177 idx = SSL_PKEY_RSA; 2178 } else if ((alg_a & SSL_aECDSA) && 2179 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2180 idx = SSL_PKEY_ECC; 2181 if (idx == -1) { 2182 SSLerror(s, ERR_R_INTERNAL_ERROR); 2183 return (NULL); 2184 } 2185 2186 pkey = c->pkeys[idx].privatekey; 2187 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2188 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2189 return (NULL); 2190 } 2191 *pmd = sigalg->md(); 2192 *sap = sigalg; 2193 2194 return (pkey); 2195 } 2196 2197 DH * 2198 ssl_get_auto_dh(SSL *s) 2199 { 2200 CERT_PKEY *cpk; 2201 int keylen; 2202 DH *dhp; 2203 2204 if (s->cert->dh_tmp_auto == 2) { 2205 keylen = 1024; 2206 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2207 keylen = 1024; 2208 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2209 keylen = 3072; 2210 } else { 2211 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2212 return (NULL); 2213 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2214 return (NULL); 2215 keylen = EVP_PKEY_bits(cpk->privatekey); 2216 } 2217 2218 if ((dhp = DH_new()) == NULL) 2219 return (NULL); 2220 2221 dhp->g = BN_new(); 2222 if (dhp->g != NULL) 2223 BN_set_word(dhp->g, 2); 2224 2225 if (keylen >= 8192) 2226 dhp->p = get_rfc3526_prime_8192(NULL); 2227 else if (keylen >= 4096) 2228 dhp->p = get_rfc3526_prime_4096(NULL); 2229 else if (keylen >= 3072) 2230 dhp->p = get_rfc3526_prime_3072(NULL); 2231 else if (keylen >= 2048) 2232 dhp->p = get_rfc3526_prime_2048(NULL); 2233 else if (keylen >= 1536) 2234 dhp->p = get_rfc3526_prime_1536(NULL); 2235 else 2236 dhp->p = get_rfc2409_prime_1024(NULL); 2237 2238 if (dhp->p == NULL || dhp->g == NULL) { 2239 DH_free(dhp); 2240 return (NULL); 2241 } 2242 return (dhp); 2243 } 2244 2245 void 2246 ssl_update_cache(SSL *s, int mode) 2247 { 2248 int i; 2249 2250 /* 2251 * If the session_id_length is 0, we are not supposed to cache it, 2252 * and it would be rather hard to do anyway :-) 2253 */ 2254 if (s->session->session_id_length == 0) 2255 return; 2256 2257 i = s->session_ctx->internal->session_cache_mode; 2258 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2259 || SSL_CTX_add_session(s->session_ctx, s->session)) 2260 && (s->session_ctx->internal->new_session_cb != NULL)) { 2261 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2262 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2263 SSL_SESSION_free(s->session); 2264 } 2265 2266 /* auto flush every 255 connections */ 2267 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2268 ((i & mode) == mode)) { 2269 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2270 s->session_ctx->internal->stats.sess_connect_good : 2271 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2272 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2273 } 2274 } 2275 } 2276 2277 const SSL_METHOD * 2278 SSL_get_ssl_method(SSL *s) 2279 { 2280 return (s->method); 2281 } 2282 2283 int 2284 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2285 { 2286 int (*handshake_func)(SSL *) = NULL; 2287 int ret = 1; 2288 2289 if (s->method == method) 2290 return (ret); 2291 2292 if (s->internal->handshake_func == s->method->internal->ssl_connect) 2293 handshake_func = method->internal->ssl_connect; 2294 else if (s->internal->handshake_func == s->method->internal->ssl_accept) 2295 handshake_func = method->internal->ssl_accept; 2296 2297 if (s->method->internal->version == method->internal->version) { 2298 s->method = method; 2299 } else { 2300 s->method->internal->ssl_free(s); 2301 s->method = method; 2302 ret = s->method->internal->ssl_new(s); 2303 } 2304 s->internal->handshake_func = handshake_func; 2305 2306 return (ret); 2307 } 2308 2309 int 2310 SSL_get_error(const SSL *s, int i) 2311 { 2312 int reason; 2313 unsigned long l; 2314 BIO *bio; 2315 2316 if (i > 0) 2317 return (SSL_ERROR_NONE); 2318 2319 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2320 * etc, where we do encode the error */ 2321 if ((l = ERR_peek_error()) != 0) { 2322 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2323 return (SSL_ERROR_SYSCALL); 2324 else 2325 return (SSL_ERROR_SSL); 2326 } 2327 2328 if ((i < 0) && SSL_want_read(s)) { 2329 bio = SSL_get_rbio(s); 2330 if (BIO_should_read(bio)) { 2331 return (SSL_ERROR_WANT_READ); 2332 } else if (BIO_should_write(bio)) { 2333 /* 2334 * This one doesn't make too much sense... We never 2335 * try to write to the rbio, and an application 2336 * program where rbio and wbio are separate couldn't 2337 * even know what it should wait for. However if we 2338 * ever set s->internal->rwstate incorrectly (so that we have 2339 * SSL_want_read(s) instead of SSL_want_write(s)) 2340 * and rbio and wbio *are* the same, this test works 2341 * around that bug; so it might be safer to keep it. 2342 */ 2343 return (SSL_ERROR_WANT_WRITE); 2344 } else if (BIO_should_io_special(bio)) { 2345 reason = BIO_get_retry_reason(bio); 2346 if (reason == BIO_RR_CONNECT) 2347 return (SSL_ERROR_WANT_CONNECT); 2348 else if (reason == BIO_RR_ACCEPT) 2349 return (SSL_ERROR_WANT_ACCEPT); 2350 else 2351 return (SSL_ERROR_SYSCALL); /* unknown */ 2352 } 2353 } 2354 2355 if ((i < 0) && SSL_want_write(s)) { 2356 bio = SSL_get_wbio(s); 2357 if (BIO_should_write(bio)) { 2358 return (SSL_ERROR_WANT_WRITE); 2359 } else if (BIO_should_read(bio)) { 2360 /* 2361 * See above (SSL_want_read(s) with 2362 * BIO_should_write(bio)) 2363 */ 2364 return (SSL_ERROR_WANT_READ); 2365 } else if (BIO_should_io_special(bio)) { 2366 reason = BIO_get_retry_reason(bio); 2367 if (reason == BIO_RR_CONNECT) 2368 return (SSL_ERROR_WANT_CONNECT); 2369 else if (reason == BIO_RR_ACCEPT) 2370 return (SSL_ERROR_WANT_ACCEPT); 2371 else 2372 return (SSL_ERROR_SYSCALL); 2373 } 2374 } 2375 if ((i < 0) && SSL_want_x509_lookup(s)) { 2376 return (SSL_ERROR_WANT_X509_LOOKUP); 2377 } 2378 2379 if (i == 0) { 2380 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2381 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2382 return (SSL_ERROR_ZERO_RETURN); 2383 } 2384 return (SSL_ERROR_SYSCALL); 2385 } 2386 2387 int 2388 SSL_do_handshake(SSL *s) 2389 { 2390 int ret = 1; 2391 2392 if (s->internal->handshake_func == NULL) { 2393 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2394 return (-1); 2395 } 2396 2397 s->method->internal->ssl_renegotiate_check(s); 2398 2399 if (SSL_in_init(s) || SSL_in_before(s)) { 2400 ret = s->internal->handshake_func(s); 2401 } 2402 return (ret); 2403 } 2404 2405 /* 2406 * For the next 2 functions, SSL_clear() sets shutdown and so 2407 * one of these calls will reset it 2408 */ 2409 void 2410 SSL_set_accept_state(SSL *s) 2411 { 2412 s->server = 1; 2413 s->internal->shutdown = 0; 2414 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2415 s->internal->handshake_func = s->method->internal->ssl_accept; 2416 ssl_clear_cipher_state(s); 2417 } 2418 2419 void 2420 SSL_set_connect_state(SSL *s) 2421 { 2422 s->server = 0; 2423 s->internal->shutdown = 0; 2424 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2425 s->internal->handshake_func = s->method->internal->ssl_connect; 2426 ssl_clear_cipher_state(s); 2427 } 2428 2429 int 2430 ssl_undefined_function(SSL *s) 2431 { 2432 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2433 return (0); 2434 } 2435 2436 int 2437 ssl_undefined_void_function(void) 2438 { 2439 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2440 return (0); 2441 } 2442 2443 int 2444 ssl_undefined_const_function(const SSL *s) 2445 { 2446 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2447 return (0); 2448 } 2449 2450 const char * 2451 ssl_version_string(int ver) 2452 { 2453 switch (ver) { 2454 case DTLS1_VERSION: 2455 return (SSL_TXT_DTLS1); 2456 case TLS1_VERSION: 2457 return (SSL_TXT_TLSV1); 2458 case TLS1_1_VERSION: 2459 return (SSL_TXT_TLSV1_1); 2460 case TLS1_2_VERSION: 2461 return (SSL_TXT_TLSV1_2); 2462 case TLS1_3_VERSION: 2463 return (SSL_TXT_TLSV1_3); 2464 default: 2465 return ("unknown"); 2466 } 2467 } 2468 2469 const char * 2470 SSL_get_version(const SSL *s) 2471 { 2472 return ssl_version_string(s->version); 2473 } 2474 2475 SSL * 2476 SSL_dup(SSL *s) 2477 { 2478 STACK_OF(X509_NAME) *sk; 2479 X509_NAME *xn; 2480 SSL *ret; 2481 int i; 2482 2483 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2484 goto err; 2485 2486 ret->version = s->version; 2487 ret->internal->type = s->internal->type; 2488 ret->method = s->method; 2489 2490 if (s->session != NULL) { 2491 if (!SSL_copy_session_id(ret, s)) 2492 goto err; 2493 } else { 2494 /* 2495 * No session has been established yet, so we have to expect 2496 * that s->cert or ret->cert will be changed later -- 2497 * they should not both point to the same object, 2498 * and thus we can't use SSL_copy_session_id. 2499 */ 2500 2501 ret->method->internal->ssl_free(ret); 2502 ret->method = s->method; 2503 ret->method->internal->ssl_new(ret); 2504 2505 ssl_cert_free(ret->cert); 2506 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2507 goto err; 2508 2509 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2510 s->sid_ctx_length)) 2511 goto err; 2512 } 2513 2514 ret->internal->options = s->internal->options; 2515 ret->internal->mode = s->internal->mode; 2516 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2517 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2518 ret->internal->msg_callback = s->internal->msg_callback; 2519 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2520 SSL_set_verify(ret, SSL_get_verify_mode(s), 2521 SSL_get_verify_callback(s)); 2522 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2523 ret->internal->generate_session_id = s->internal->generate_session_id; 2524 2525 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2526 2527 ret->internal->debug = s->internal->debug; 2528 2529 /* copy app data, a little dangerous perhaps */ 2530 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2531 &ret->internal->ex_data, &s->internal->ex_data)) 2532 goto err; 2533 2534 /* setup rbio, and wbio */ 2535 if (s->rbio != NULL) { 2536 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2537 goto err; 2538 } 2539 if (s->wbio != NULL) { 2540 if (s->wbio != s->rbio) { 2541 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2542 goto err; 2543 } else 2544 ret->wbio = ret->rbio; 2545 } 2546 ret->internal->rwstate = s->internal->rwstate; 2547 ret->internal->in_handshake = s->internal->in_handshake; 2548 ret->internal->handshake_func = s->internal->handshake_func; 2549 ret->server = s->server; 2550 ret->internal->renegotiate = s->internal->renegotiate; 2551 ret->internal->new_session = s->internal->new_session; 2552 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2553 ret->internal->shutdown = s->internal->shutdown; 2554 /* SSL_dup does not really work at any state, though */ 2555 S3I(ret)->hs.state = S3I(s)->hs.state; 2556 ret->internal->rstate = s->internal->rstate; 2557 2558 /* 2559 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2560 * ret->init_off 2561 */ 2562 ret->internal->init_num = 0; 2563 2564 ret->internal->hit = s->internal->hit; 2565 2566 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2567 2568 if (s->cipher_list != NULL) { 2569 if ((ret->cipher_list = 2570 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2571 goto err; 2572 } 2573 if (s->internal->cipher_list_tls13 != NULL) { 2574 if ((ret->internal->cipher_list_tls13 = 2575 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2576 goto err; 2577 } 2578 2579 /* Dup the client_CA list */ 2580 if (s->internal->client_CA != NULL) { 2581 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2582 ret->internal->client_CA = sk; 2583 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2584 xn = sk_X509_NAME_value(sk, i); 2585 if (sk_X509_NAME_set(sk, i, 2586 X509_NAME_dup(xn)) == NULL) { 2587 X509_NAME_free(xn); 2588 goto err; 2589 } 2590 } 2591 } 2592 2593 return ret; 2594 err: 2595 SSL_free(ret); 2596 return NULL; 2597 } 2598 2599 void 2600 ssl_clear_cipher_state(SSL *s) 2601 { 2602 ssl_clear_cipher_read_state(s); 2603 ssl_clear_cipher_write_state(s); 2604 } 2605 2606 void 2607 ssl_clear_cipher_read_state(SSL *s) 2608 { 2609 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2610 s->enc_read_ctx = NULL; 2611 EVP_MD_CTX_free(s->read_hash); 2612 s->read_hash = NULL; 2613 2614 tls12_record_layer_clear_read_state(s->internal->rl); 2615 tls12_record_layer_set_read_seq_num(s->internal->rl, 2616 S3I(s)->read_sequence); 2617 2618 if (s->internal->aead_read_ctx != NULL) { 2619 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2620 free(s->internal->aead_read_ctx); 2621 s->internal->aead_read_ctx = NULL; 2622 } 2623 } 2624 2625 void 2626 ssl_clear_cipher_write_state(SSL *s) 2627 { 2628 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2629 s->internal->enc_write_ctx = NULL; 2630 EVP_MD_CTX_free(s->internal->write_hash); 2631 s->internal->write_hash = NULL; 2632 2633 tls12_record_layer_clear_write_state(s->internal->rl); 2634 tls12_record_layer_set_write_seq_num(s->internal->rl, 2635 S3I(s)->write_sequence); 2636 2637 if (s->internal->aead_write_ctx != NULL) { 2638 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2639 free(s->internal->aead_write_ctx); 2640 s->internal->aead_write_ctx = NULL; 2641 } 2642 } 2643 2644 /* Fix this function so that it takes an optional type parameter */ 2645 X509 * 2646 SSL_get_certificate(const SSL *s) 2647 { 2648 return (s->cert->key->x509); 2649 } 2650 2651 /* Fix this function so that it takes an optional type parameter */ 2652 EVP_PKEY * 2653 SSL_get_privatekey(const SSL *s) 2654 { 2655 return (s->cert->key->privatekey); 2656 } 2657 2658 const SSL_CIPHER * 2659 SSL_get_current_cipher(const SSL *s) 2660 { 2661 if ((s->session != NULL) && (s->session->cipher != NULL)) 2662 return (s->session->cipher); 2663 return (NULL); 2664 } 2665 const void * 2666 SSL_get_current_compression(SSL *s) 2667 { 2668 return (NULL); 2669 } 2670 2671 const void * 2672 SSL_get_current_expansion(SSL *s) 2673 { 2674 return (NULL); 2675 } 2676 2677 size_t 2678 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2679 { 2680 size_t len = sizeof(s->s3->client_random); 2681 2682 if (out == NULL) 2683 return len; 2684 2685 if (len > max_out) 2686 len = max_out; 2687 2688 memcpy(out, s->s3->client_random, len); 2689 2690 return len; 2691 } 2692 2693 size_t 2694 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2695 { 2696 size_t len = sizeof(s->s3->server_random); 2697 2698 if (out == NULL) 2699 return len; 2700 2701 if (len > max_out) 2702 len = max_out; 2703 2704 memcpy(out, s->s3->server_random, len); 2705 2706 return len; 2707 } 2708 2709 int 2710 ssl_init_wbio_buffer(SSL *s, int push) 2711 { 2712 BIO *bbio; 2713 2714 if (s->bbio == NULL) { 2715 bbio = BIO_new(BIO_f_buffer()); 2716 if (bbio == NULL) 2717 return (0); 2718 s->bbio = bbio; 2719 } else { 2720 bbio = s->bbio; 2721 if (s->bbio == s->wbio) 2722 s->wbio = BIO_pop(s->wbio); 2723 } 2724 (void)BIO_reset(bbio); 2725 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2726 if (!BIO_set_read_buffer_size(bbio, 1)) { 2727 SSLerror(s, ERR_R_BUF_LIB); 2728 return (0); 2729 } 2730 if (push) { 2731 if (s->wbio != bbio) 2732 s->wbio = BIO_push(bbio, s->wbio); 2733 } else { 2734 if (s->wbio == bbio) 2735 s->wbio = BIO_pop(bbio); 2736 } 2737 return (1); 2738 } 2739 2740 void 2741 ssl_free_wbio_buffer(SSL *s) 2742 { 2743 if (s == NULL) 2744 return; 2745 2746 if (s->bbio == NULL) 2747 return; 2748 2749 if (s->bbio == s->wbio) { 2750 /* remove buffering */ 2751 s->wbio = BIO_pop(s->wbio); 2752 } 2753 BIO_free(s->bbio); 2754 s->bbio = NULL; 2755 } 2756 2757 void 2758 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2759 { 2760 ctx->internal->quiet_shutdown = mode; 2761 } 2762 2763 int 2764 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2765 { 2766 return (ctx->internal->quiet_shutdown); 2767 } 2768 2769 void 2770 SSL_set_quiet_shutdown(SSL *s, int mode) 2771 { 2772 s->internal->quiet_shutdown = mode; 2773 } 2774 2775 int 2776 SSL_get_quiet_shutdown(const SSL *s) 2777 { 2778 return (s->internal->quiet_shutdown); 2779 } 2780 2781 void 2782 SSL_set_shutdown(SSL *s, int mode) 2783 { 2784 s->internal->shutdown = mode; 2785 } 2786 2787 int 2788 SSL_get_shutdown(const SSL *s) 2789 { 2790 return (s->internal->shutdown); 2791 } 2792 2793 int 2794 SSL_version(const SSL *s) 2795 { 2796 return (s->version); 2797 } 2798 2799 SSL_CTX * 2800 SSL_get_SSL_CTX(const SSL *ssl) 2801 { 2802 return (ssl->ctx); 2803 } 2804 2805 SSL_CTX * 2806 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2807 { 2808 CERT *new_cert; 2809 2810 if (ctx == NULL) 2811 ctx = ssl->initial_ctx; 2812 if (ssl->ctx == ctx) 2813 return (ssl->ctx); 2814 2815 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2816 return NULL; 2817 ssl_cert_free(ssl->cert); 2818 ssl->cert = new_cert; 2819 2820 SSL_CTX_up_ref(ctx); 2821 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2822 ssl->ctx = ctx; 2823 2824 return (ssl->ctx); 2825 } 2826 2827 int 2828 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2829 { 2830 return (X509_STORE_set_default_paths(ctx->cert_store)); 2831 } 2832 2833 int 2834 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2835 const char *CApath) 2836 { 2837 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2838 } 2839 2840 int 2841 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2842 { 2843 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2844 } 2845 2846 void 2847 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2848 { 2849 ssl->internal->info_callback = cb; 2850 } 2851 2852 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2853 { 2854 return (ssl->internal->info_callback); 2855 } 2856 2857 int 2858 SSL_state(const SSL *ssl) 2859 { 2860 return (S3I(ssl)->hs.state); 2861 } 2862 2863 void 2864 SSL_set_state(SSL *ssl, int state) 2865 { 2866 S3I(ssl)->hs.state = state; 2867 } 2868 2869 void 2870 SSL_set_verify_result(SSL *ssl, long arg) 2871 { 2872 ssl->verify_result = arg; 2873 } 2874 2875 long 2876 SSL_get_verify_result(const SSL *ssl) 2877 { 2878 return (ssl->verify_result); 2879 } 2880 2881 int 2882 SSL_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, argl, argp, 2886 new_func, dup_func, free_func)); 2887 } 2888 2889 int 2890 SSL_set_ex_data(SSL *s, int idx, void *arg) 2891 { 2892 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2893 } 2894 2895 void * 2896 SSL_get_ex_data(const SSL *s, int idx) 2897 { 2898 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2899 } 2900 2901 int 2902 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2903 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2904 { 2905 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2906 new_func, dup_func, free_func)); 2907 } 2908 2909 int 2910 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2911 { 2912 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2913 } 2914 2915 void * 2916 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2917 { 2918 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2919 } 2920 2921 int 2922 ssl_ok(SSL *s) 2923 { 2924 return (1); 2925 } 2926 2927 X509_STORE * 2928 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2929 { 2930 return (ctx->cert_store); 2931 } 2932 2933 void 2934 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2935 { 2936 X509_STORE_free(ctx->cert_store); 2937 ctx->cert_store = store; 2938 } 2939 2940 X509 * 2941 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2942 { 2943 if (ctx->internal->cert == NULL) 2944 return NULL; 2945 2946 return ctx->internal->cert->key->x509; 2947 } 2948 2949 int 2950 SSL_want(const SSL *s) 2951 { 2952 return (s->internal->rwstate); 2953 } 2954 2955 void 2956 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2957 int keylength)) 2958 { 2959 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2960 } 2961 2962 void 2963 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2964 int keylength)) 2965 { 2966 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2967 } 2968 2969 void 2970 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2971 int keylength)) 2972 { 2973 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2974 } 2975 2976 void 2977 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2978 int keylength)) 2979 { 2980 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2981 } 2982 2983 void 2984 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2985 int is_export, int keylength)) 2986 { 2987 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2988 (void (*)(void))ecdh); 2989 } 2990 2991 void 2992 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2993 int keylength)) 2994 { 2995 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2996 } 2997 2998 2999 void 3000 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3001 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3002 { 3003 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3004 (void (*)(void))cb); 3005 } 3006 3007 void 3008 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3009 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3010 { 3011 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3012 } 3013 3014 void 3015 SSL_set_debug(SSL *s, int debug) 3016 { 3017 s->internal->debug = debug; 3018 } 3019 3020 int 3021 SSL_cache_hit(SSL *s) 3022 { 3023 return (s->internal->hit); 3024 } 3025 3026 int 3027 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3028 { 3029 return ctx->internal->min_version; 3030 } 3031 3032 int 3033 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3034 { 3035 return ssl_version_set_min(ctx->method, version, 3036 ctx->internal->max_version, &ctx->internal->min_version); 3037 } 3038 3039 int 3040 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3041 { 3042 return ctx->internal->max_version; 3043 } 3044 3045 int 3046 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3047 { 3048 return ssl_version_set_max(ctx->method, version, 3049 ctx->internal->min_version, &ctx->internal->max_version); 3050 } 3051 3052 int 3053 SSL_get_min_proto_version(SSL *ssl) 3054 { 3055 return ssl->internal->min_version; 3056 } 3057 3058 int 3059 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3060 { 3061 return ssl_version_set_min(ssl->method, version, 3062 ssl->internal->max_version, &ssl->internal->min_version); 3063 } 3064 int 3065 SSL_get_max_proto_version(SSL *ssl) 3066 { 3067 return ssl->internal->max_version; 3068 } 3069 3070 int 3071 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3072 { 3073 return ssl_version_set_max(ssl->method, version, 3074 ssl->internal->min_version, &ssl->internal->max_version); 3075 } 3076 3077 static int 3078 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3079 { 3080 SSL_CIPHER const *a = a_; 3081 SSL_CIPHER const *b = b_; 3082 return ssl_cipher_id_cmp(a, b); 3083 } 3084 3085 SSL_CIPHER * 3086 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3087 { 3088 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3089 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3090 } 3091