1 /* $OpenBSD: ssl_lib.c,v 1.264 2021/09/04 15:21:45 beck Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <stdio.h> 148 149 #include <openssl/bn.h> 150 #include <openssl/dh.h> 151 #include <openssl/lhash.h> 152 #include <openssl/objects.h> 153 #include <openssl/ocsp.h> 154 #include <openssl/opensslconf.h> 155 #include <openssl/x509v3.h> 156 157 #ifndef OPENSSL_NO_ENGINE 158 #include <openssl/engine.h> 159 #endif 160 161 #include "bytestring.h" 162 #include "dtls_locl.h" 163 #include "ssl_locl.h" 164 #include "ssl_sigalgs.h" 165 166 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168 int 169 SSL_clear(SSL *s) 170 { 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->ssl_new(s)) 213 return (0); 214 } else 215 s->method->ssl_clear(s); 216 217 return (1); 218 } 219 220 /* Used to change an SSL_CTXs default SSL method type */ 221 int 222 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223 { 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 230 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 231 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 232 return (0); 233 } 234 return (1); 235 } 236 237 SSL * 238 SSL_new(SSL_CTX *ctx) 239 { 240 SSL *s; 241 242 if (ctx == NULL) { 243 SSLerrorx(SSL_R_NULL_SSL_CTX); 244 return (NULL); 245 } 246 if (ctx->method == NULL) { 247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 248 return (NULL); 249 } 250 251 if ((s = calloc(1, sizeof(*s))) == NULL) 252 goto err; 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 254 goto err; 255 256 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 257 goto err; 258 259 s->internal->min_tls_version = ctx->internal->min_tls_version; 260 s->internal->max_tls_version = ctx->internal->max_tls_version; 261 s->internal->min_proto_version = ctx->internal->min_proto_version; 262 s->internal->max_proto_version = ctx->internal->max_proto_version; 263 264 s->internal->options = ctx->internal->options; 265 s->internal->mode = ctx->internal->mode; 266 s->internal->max_cert_list = ctx->internal->max_cert_list; 267 268 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 269 goto err; 270 271 s->internal->read_ahead = ctx->internal->read_ahead; 272 s->internal->msg_callback = ctx->internal->msg_callback; 273 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 274 s->verify_mode = ctx->verify_mode; 275 s->sid_ctx_length = ctx->sid_ctx_length; 276 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 277 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 278 s->internal->verify_callback = ctx->internal->default_verify_callback; 279 s->internal->generate_session_id = ctx->internal->generate_session_id; 280 281 s->param = X509_VERIFY_PARAM_new(); 282 if (!s->param) 283 goto err; 284 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 285 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 286 s->max_send_fragment = ctx->internal->max_send_fragment; 287 288 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 289 s->ctx = ctx; 290 s->internal->tlsext_debug_cb = 0; 291 s->internal->tlsext_debug_arg = NULL; 292 s->internal->tlsext_ticket_expected = 0; 293 s->tlsext_status_type = -1; 294 s->internal->tlsext_status_expected = 0; 295 s->internal->tlsext_ocsp_ids = NULL; 296 s->internal->tlsext_ocsp_exts = NULL; 297 s->internal->tlsext_ocsp_resp = NULL; 298 s->internal->tlsext_ocsp_resp_len = 0; 299 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 300 s->initial_ctx = ctx; 301 302 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 303 s->internal->tlsext_ecpointformatlist = 304 calloc(ctx->internal->tlsext_ecpointformatlist_length, 305 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 306 if (s->internal->tlsext_ecpointformatlist == NULL) 307 goto err; 308 memcpy(s->internal->tlsext_ecpointformatlist, 309 ctx->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist_length * 311 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 312 s->internal->tlsext_ecpointformatlist_length = 313 ctx->internal->tlsext_ecpointformatlist_length; 314 } 315 if (ctx->internal->tlsext_supportedgroups != NULL) { 316 s->internal->tlsext_supportedgroups = 317 calloc(ctx->internal->tlsext_supportedgroups_length, 318 sizeof(ctx->internal->tlsext_supportedgroups[0])); 319 if (s->internal->tlsext_supportedgroups == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_supportedgroups, 322 ctx->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups_length * 324 sizeof(ctx->internal->tlsext_supportedgroups[0])); 325 s->internal->tlsext_supportedgroups_length = 326 ctx->internal->tlsext_supportedgroups_length; 327 } 328 329 if (s->ctx->internal->alpn_client_proto_list != NULL) { 330 s->internal->alpn_client_proto_list = 331 malloc(s->ctx->internal->alpn_client_proto_list_len); 332 if (s->internal->alpn_client_proto_list == NULL) 333 goto err; 334 memcpy(s->internal->alpn_client_proto_list, 335 s->ctx->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list_len); 337 s->internal->alpn_client_proto_list_len = 338 s->ctx->internal->alpn_client_proto_list_len; 339 } 340 341 s->verify_result = X509_V_OK; 342 343 s->method = ctx->method; 344 345 if (!s->method->ssl_new(s)) 346 goto err; 347 348 s->references = 1; 349 s->server = ctx->method->server; 350 351 SSL_clear(s); 352 353 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 354 355 return (s); 356 357 err: 358 SSL_free(s); 359 SSLerrorx(ERR_R_MALLOC_FAILURE); 360 return (NULL); 361 } 362 363 int 364 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 365 unsigned int sid_ctx_len) 366 { 367 if (sid_ctx_len > sizeof ctx->sid_ctx) { 368 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 369 return (0); 370 } 371 ctx->sid_ctx_length = sid_ctx_len; 372 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 373 374 return (1); 375 } 376 377 int 378 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 379 unsigned int sid_ctx_len) 380 { 381 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 382 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 383 return (0); 384 } 385 ssl->sid_ctx_length = sid_ctx_len; 386 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 387 388 return (1); 389 } 390 391 int 392 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 393 { 394 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 395 ctx->internal->generate_session_id = cb; 396 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 397 return (1); 398 } 399 400 int 401 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 402 { 403 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 404 ssl->internal->generate_session_id = cb; 405 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 406 return (1); 407 } 408 409 int 410 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 411 unsigned int id_len) 412 { 413 /* 414 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 415 * shows how we can "construct" a session to give us the desired 416 * check - ie. to find if there's a session in the hash table 417 * that would conflict with any new session built out of this 418 * id/id_len and the ssl_version in use by this SSL. 419 */ 420 SSL_SESSION r, *p; 421 422 if (id_len > sizeof r.session_id) 423 return (0); 424 425 r.ssl_version = ssl->version; 426 r.session_id_length = id_len; 427 memcpy(r.session_id, id, id_len); 428 429 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 430 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 431 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 432 return (p != NULL); 433 } 434 435 int 436 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 437 { 438 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 439 } 440 441 int 442 SSL_set_purpose(SSL *s, int purpose) 443 { 444 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 445 } 446 447 int 448 SSL_CTX_set_trust(SSL_CTX *s, int trust) 449 { 450 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 451 } 452 453 int 454 SSL_set_trust(SSL *s, int trust) 455 { 456 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 457 } 458 459 int 460 SSL_set1_host(SSL *s, const char *hostname) 461 { 462 struct in_addr ina; 463 struct in6_addr in6a; 464 465 if (hostname != NULL && *hostname != '\0' && 466 (inet_pton(AF_INET, hostname, &ina) == 1 || 467 inet_pton(AF_INET6, hostname, &in6a) == 1)) 468 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 469 else 470 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 471 } 472 473 void 474 SSL_set_hostflags(SSL *s, unsigned int flags) 475 { 476 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 477 } 478 479 const char * 480 SSL_get0_peername(SSL *s) 481 { 482 return X509_VERIFY_PARAM_get0_peername(s->param); 483 } 484 485 X509_VERIFY_PARAM * 486 SSL_CTX_get0_param(SSL_CTX *ctx) 487 { 488 return (ctx->param); 489 } 490 491 int 492 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 493 { 494 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 495 } 496 497 X509_VERIFY_PARAM * 498 SSL_get0_param(SSL *ssl) 499 { 500 return (ssl->param); 501 } 502 503 int 504 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 505 { 506 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 507 } 508 509 void 510 SSL_free(SSL *s) 511 { 512 int i; 513 514 if (s == NULL) 515 return; 516 517 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 518 if (i > 0) 519 return; 520 521 X509_VERIFY_PARAM_free(s->param); 522 523 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 524 525 if (s->bbio != NULL) { 526 /* If the buffering BIO is in place, pop it off */ 527 if (s->bbio == s->wbio) { 528 s->wbio = BIO_pop(s->wbio); 529 } 530 BIO_free(s->bbio); 531 s->bbio = NULL; 532 } 533 534 if (s->rbio != s->wbio) 535 BIO_free_all(s->rbio); 536 BIO_free_all(s->wbio); 537 538 tls13_ctx_free(s->internal->tls13); 539 540 ssl3_release_init_buffer(s); 541 542 sk_SSL_CIPHER_free(s->cipher_list); 543 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 544 545 /* Make the next call work :-) */ 546 if (s->session != NULL) { 547 ssl_clear_bad_session(s); 548 SSL_SESSION_free(s->session); 549 } 550 551 ssl_clear_cipher_state(s); 552 553 ssl_cert_free(s->cert); 554 555 free(s->tlsext_hostname); 556 SSL_CTX_free(s->initial_ctx); 557 558 free(s->internal->tlsext_ecpointformatlist); 559 free(s->internal->tlsext_supportedgroups); 560 561 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 562 X509_EXTENSION_free); 563 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 564 free(s->internal->tlsext_ocsp_resp); 565 566 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 567 568 if (s->method != NULL) 569 s->method->ssl_free(s); 570 571 SSL_CTX_free(s->ctx); 572 573 free(s->internal->alpn_client_proto_list); 574 575 #ifndef OPENSSL_NO_SRTP 576 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 577 #endif 578 579 tls12_record_layer_free(s->internal->rl); 580 581 free(s->internal); 582 free(s); 583 } 584 585 int 586 SSL_up_ref(SSL *s) 587 { 588 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 589 return (refs > 1) ? 1 : 0; 590 } 591 592 void 593 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 594 { 595 /* If the output buffering BIO is still in place, remove it */ 596 if (s->bbio != NULL) { 597 if (s->wbio == s->bbio) { 598 s->wbio = s->wbio->next_bio; 599 s->bbio->next_bio = NULL; 600 } 601 } 602 603 if (s->rbio != rbio && s->rbio != s->wbio) 604 BIO_free_all(s->rbio); 605 if (s->wbio != wbio) 606 BIO_free_all(s->wbio); 607 s->rbio = rbio; 608 s->wbio = wbio; 609 } 610 611 BIO * 612 SSL_get_rbio(const SSL *s) 613 { 614 return (s->rbio); 615 } 616 617 BIO * 618 SSL_get_wbio(const SSL *s) 619 { 620 return (s->wbio); 621 } 622 623 int 624 SSL_get_fd(const SSL *s) 625 { 626 return (SSL_get_rfd(s)); 627 } 628 629 int 630 SSL_get_rfd(const SSL *s) 631 { 632 int ret = -1; 633 BIO *b, *r; 634 635 b = SSL_get_rbio(s); 636 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 637 if (r != NULL) 638 BIO_get_fd(r, &ret); 639 return (ret); 640 } 641 642 int 643 SSL_get_wfd(const SSL *s) 644 { 645 int ret = -1; 646 BIO *b, *r; 647 648 b = SSL_get_wbio(s); 649 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 650 if (r != NULL) 651 BIO_get_fd(r, &ret); 652 return (ret); 653 } 654 655 int 656 SSL_set_fd(SSL *s, int fd) 657 { 658 int ret = 0; 659 BIO *bio = NULL; 660 661 bio = BIO_new(BIO_s_socket()); 662 663 if (bio == NULL) { 664 SSLerror(s, ERR_R_BUF_LIB); 665 goto err; 666 } 667 BIO_set_fd(bio, fd, BIO_NOCLOSE); 668 SSL_set_bio(s, bio, bio); 669 ret = 1; 670 err: 671 return (ret); 672 } 673 674 int 675 SSL_set_wfd(SSL *s, int fd) 676 { 677 int ret = 0; 678 BIO *bio = NULL; 679 680 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 681 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 682 bio = BIO_new(BIO_s_socket()); 683 684 if (bio == NULL) { 685 SSLerror(s, ERR_R_BUF_LIB); 686 goto err; 687 } 688 BIO_set_fd(bio, fd, BIO_NOCLOSE); 689 SSL_set_bio(s, SSL_get_rbio(s), bio); 690 } else 691 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 692 ret = 1; 693 err: 694 return (ret); 695 } 696 697 int 698 SSL_set_rfd(SSL *s, int fd) 699 { 700 int ret = 0; 701 BIO *bio = NULL; 702 703 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 704 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 705 bio = BIO_new(BIO_s_socket()); 706 707 if (bio == NULL) { 708 SSLerror(s, ERR_R_BUF_LIB); 709 goto err; 710 } 711 BIO_set_fd(bio, fd, BIO_NOCLOSE); 712 SSL_set_bio(s, bio, SSL_get_wbio(s)); 713 } else 714 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 715 ret = 1; 716 err: 717 return (ret); 718 } 719 720 721 /* return length of latest Finished message we sent, copy to 'buf' */ 722 size_t 723 SSL_get_finished(const SSL *s, void *buf, size_t count) 724 { 725 size_t ret; 726 727 ret = S3I(s)->hs.finished_len; 728 if (count > ret) 729 count = ret; 730 memcpy(buf, S3I(s)->hs.finished, count); 731 return (ret); 732 } 733 734 /* return length of latest Finished message we expected, copy to 'buf' */ 735 size_t 736 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 737 { 738 size_t ret; 739 740 ret = S3I(s)->hs.peer_finished_len; 741 if (count > ret) 742 count = ret; 743 memcpy(buf, S3I(s)->hs.peer_finished, count); 744 return (ret); 745 } 746 747 748 int 749 SSL_get_verify_mode(const SSL *s) 750 { 751 return (s->verify_mode); 752 } 753 754 int 755 SSL_get_verify_depth(const SSL *s) 756 { 757 return (X509_VERIFY_PARAM_get_depth(s->param)); 758 } 759 760 int 761 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 762 { 763 return (s->internal->verify_callback); 764 } 765 766 int 767 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 768 { 769 return (ctx->verify_mode); 770 } 771 772 int 773 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 774 { 775 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 776 } 777 778 int 779 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 780 { 781 return (ctx->internal->default_verify_callback); 782 } 783 784 void 785 SSL_set_verify(SSL *s, int mode, 786 int (*callback)(int ok, X509_STORE_CTX *ctx)) 787 { 788 s->verify_mode = mode; 789 if (callback != NULL) 790 s->internal->verify_callback = callback; 791 } 792 793 void 794 SSL_set_verify_depth(SSL *s, int depth) 795 { 796 X509_VERIFY_PARAM_set_depth(s->param, depth); 797 } 798 799 void 800 SSL_set_read_ahead(SSL *s, int yes) 801 { 802 s->internal->read_ahead = yes; 803 } 804 805 int 806 SSL_get_read_ahead(const SSL *s) 807 { 808 return (s->internal->read_ahead); 809 } 810 811 int 812 SSL_pending(const SSL *s) 813 { 814 return (s->method->ssl_pending(s)); 815 } 816 817 X509 * 818 SSL_get_peer_certificate(const SSL *s) 819 { 820 X509 *r; 821 822 if ((s == NULL) || (s->session == NULL)) 823 r = NULL; 824 else 825 r = s->session->peer; 826 827 if (r == NULL) 828 return (r); 829 830 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 831 832 return (r); 833 } 834 835 STACK_OF(X509) * 836 SSL_get_peer_cert_chain(const SSL *s) 837 { 838 STACK_OF(X509) *r; 839 840 if ((s == NULL) || (s->session == NULL) || 841 (SSI(s)->sess_cert == NULL)) 842 r = NULL; 843 else 844 r = SSI(s)->sess_cert->cert_chain; 845 846 /* 847 * If we are a client, cert_chain includes the peer's own 848 * certificate; 849 * if we are a server, it does not. 850 */ 851 return (r); 852 } 853 854 /* 855 * Now in theory, since the calling process own 't' it should be safe to 856 * modify. We need to be able to read f without being hassled 857 */ 858 int 859 SSL_copy_session_id(SSL *t, const SSL *f) 860 { 861 CERT *tmp; 862 863 /* Do we need to do SSL locking? */ 864 if (!SSL_set_session(t, SSL_get_session(f))) 865 return 0; 866 867 /* What if we are set up for one protocol but want to talk another? */ 868 if (t->method != f->method) { 869 t->method->ssl_free(t); 870 t->method = f->method; 871 if (!t->method->ssl_new(t)) 872 return 0; 873 } 874 875 tmp = t->cert; 876 if (f->cert != NULL) { 877 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 878 t->cert = f->cert; 879 } else 880 t->cert = NULL; 881 ssl_cert_free(tmp); 882 883 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 884 return 0; 885 886 return 1; 887 } 888 889 /* Fix this so it checks all the valid key/cert options */ 890 int 891 SSL_CTX_check_private_key(const SSL_CTX *ctx) 892 { 893 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 894 (ctx->internal->cert->key->x509 == NULL)) { 895 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 896 return (0); 897 } 898 if (ctx->internal->cert->key->privatekey == NULL) { 899 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 900 return (0); 901 } 902 return (X509_check_private_key(ctx->internal->cert->key->x509, 903 ctx->internal->cert->key->privatekey)); 904 } 905 906 /* Fix this function so that it takes an optional type parameter */ 907 int 908 SSL_check_private_key(const SSL *ssl) 909 { 910 if (ssl == NULL) { 911 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 912 return (0); 913 } 914 if (ssl->cert == NULL) { 915 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 916 return (0); 917 } 918 if (ssl->cert->key->x509 == NULL) { 919 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 920 return (0); 921 } 922 if (ssl->cert->key->privatekey == NULL) { 923 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 924 return (0); 925 } 926 return (X509_check_private_key(ssl->cert->key->x509, 927 ssl->cert->key->privatekey)); 928 } 929 930 int 931 SSL_accept(SSL *s) 932 { 933 if (s->internal->handshake_func == NULL) 934 SSL_set_accept_state(s); /* Not properly initialized yet */ 935 936 return (s->method->ssl_accept(s)); 937 } 938 939 int 940 SSL_connect(SSL *s) 941 { 942 if (s->internal->handshake_func == NULL) 943 SSL_set_connect_state(s); /* Not properly initialized yet */ 944 945 return (s->method->ssl_connect(s)); 946 } 947 948 int 949 SSL_is_dtls(const SSL *s) 950 { 951 return s->method->dtls; 952 } 953 954 int 955 SSL_is_server(const SSL *s) 956 { 957 return s->server; 958 } 959 960 static long 961 ssl_get_default_timeout() 962 { 963 /* 964 * 2 hours, the 24 hours mentioned in the TLSv1 spec 965 * is way too long for http, the cache would over fill. 966 */ 967 return (2 * 60 * 60); 968 } 969 970 long 971 SSL_get_default_timeout(const SSL *s) 972 { 973 return (ssl_get_default_timeout()); 974 } 975 976 int 977 SSL_read(SSL *s, void *buf, int num) 978 { 979 if (s->internal->handshake_func == NULL) { 980 SSLerror(s, SSL_R_UNINITIALIZED); 981 return (-1); 982 } 983 984 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 985 s->internal->rwstate = SSL_NOTHING; 986 return (0); 987 } 988 return ssl3_read(s, buf, num); 989 } 990 991 int 992 SSL_peek(SSL *s, void *buf, int num) 993 { 994 if (s->internal->handshake_func == NULL) { 995 SSLerror(s, SSL_R_UNINITIALIZED); 996 return (-1); 997 } 998 999 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1000 return (0); 1001 } 1002 return ssl3_peek(s, buf, num); 1003 } 1004 1005 int 1006 SSL_write(SSL *s, const void *buf, int num) 1007 { 1008 if (s->internal->handshake_func == NULL) { 1009 SSLerror(s, SSL_R_UNINITIALIZED); 1010 return (-1); 1011 } 1012 1013 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1014 s->internal->rwstate = SSL_NOTHING; 1015 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1016 return (-1); 1017 } 1018 return ssl3_write(s, buf, num); 1019 } 1020 1021 uint32_t 1022 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1023 { 1024 return 0; 1025 } 1026 1027 int 1028 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1029 { 1030 return 1; 1031 } 1032 1033 uint32_t 1034 SSL_get_max_early_data(const SSL *s) 1035 { 1036 return 0; 1037 } 1038 1039 int 1040 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1041 { 1042 return 1; 1043 } 1044 1045 int 1046 SSL_get_early_data_status(const SSL *s) 1047 { 1048 return SSL_EARLY_DATA_REJECTED; 1049 } 1050 1051 int 1052 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1053 { 1054 *readbytes = 0; 1055 1056 if (!s->server) { 1057 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1058 return SSL_READ_EARLY_DATA_ERROR; 1059 } 1060 1061 return SSL_READ_EARLY_DATA_FINISH; 1062 } 1063 1064 int 1065 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1066 { 1067 *written = 0; 1068 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1069 return 0; 1070 } 1071 1072 int 1073 SSL_shutdown(SSL *s) 1074 { 1075 /* 1076 * Note that this function behaves differently from what one might 1077 * expect. Return values are 0 for no success (yet), 1078 * 1 for success; but calling it once is usually not enough, 1079 * even if blocking I/O is used (see ssl3_shutdown). 1080 */ 1081 1082 if (s->internal->handshake_func == NULL) { 1083 SSLerror(s, SSL_R_UNINITIALIZED); 1084 return (-1); 1085 } 1086 1087 if (s != NULL && !SSL_in_init(s)) 1088 return (s->method->ssl_shutdown(s)); 1089 1090 return (1); 1091 } 1092 1093 int 1094 SSL_renegotiate(SSL *s) 1095 { 1096 if (s->internal->renegotiate == 0) 1097 s->internal->renegotiate = 1; 1098 1099 s->internal->new_session = 1; 1100 1101 return (s->method->ssl_renegotiate(s)); 1102 } 1103 1104 int 1105 SSL_renegotiate_abbreviated(SSL *s) 1106 { 1107 if (s->internal->renegotiate == 0) 1108 s->internal->renegotiate = 1; 1109 1110 s->internal->new_session = 0; 1111 1112 return (s->method->ssl_renegotiate(s)); 1113 } 1114 1115 int 1116 SSL_renegotiate_pending(SSL *s) 1117 { 1118 /* 1119 * Becomes true when negotiation is requested; 1120 * false again once a handshake has finished. 1121 */ 1122 return (s->internal->renegotiate != 0); 1123 } 1124 1125 long 1126 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1127 { 1128 long l; 1129 1130 switch (cmd) { 1131 case SSL_CTRL_GET_READ_AHEAD: 1132 return (s->internal->read_ahead); 1133 case SSL_CTRL_SET_READ_AHEAD: 1134 l = s->internal->read_ahead; 1135 s->internal->read_ahead = larg; 1136 return (l); 1137 1138 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1139 s->internal->msg_callback_arg = parg; 1140 return (1); 1141 1142 case SSL_CTRL_OPTIONS: 1143 return (s->internal->options|=larg); 1144 case SSL_CTRL_CLEAR_OPTIONS: 1145 return (s->internal->options&=~larg); 1146 case SSL_CTRL_MODE: 1147 return (s->internal->mode|=larg); 1148 case SSL_CTRL_CLEAR_MODE: 1149 return (s->internal->mode &=~larg); 1150 case SSL_CTRL_GET_MAX_CERT_LIST: 1151 return (s->internal->max_cert_list); 1152 case SSL_CTRL_SET_MAX_CERT_LIST: 1153 l = s->internal->max_cert_list; 1154 s->internal->max_cert_list = larg; 1155 return (l); 1156 case SSL_CTRL_SET_MTU: 1157 #ifndef OPENSSL_NO_DTLS1 1158 if (larg < (long)dtls1_min_mtu()) 1159 return (0); 1160 #endif 1161 if (SSL_is_dtls(s)) { 1162 D1I(s)->mtu = larg; 1163 return (larg); 1164 } 1165 return (0); 1166 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1167 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1168 return (0); 1169 s->max_send_fragment = larg; 1170 return (1); 1171 case SSL_CTRL_GET_RI_SUPPORT: 1172 if (s->s3) 1173 return (S3I(s)->send_connection_binding); 1174 else return (0); 1175 default: 1176 if (SSL_is_dtls(s)) 1177 return dtls1_ctrl(s, cmd, larg, parg); 1178 return ssl3_ctrl(s, cmd, larg, parg); 1179 } 1180 } 1181 1182 long 1183 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1184 { 1185 switch (cmd) { 1186 case SSL_CTRL_SET_MSG_CALLBACK: 1187 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1188 return (1); 1189 1190 default: 1191 return (ssl3_callback_ctrl(s, cmd, fp)); 1192 } 1193 } 1194 1195 struct lhash_st_SSL_SESSION * 1196 SSL_CTX_sessions(SSL_CTX *ctx) 1197 { 1198 return (ctx->internal->sessions); 1199 } 1200 1201 long 1202 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1203 { 1204 long l; 1205 1206 switch (cmd) { 1207 case SSL_CTRL_GET_READ_AHEAD: 1208 return (ctx->internal->read_ahead); 1209 case SSL_CTRL_SET_READ_AHEAD: 1210 l = ctx->internal->read_ahead; 1211 ctx->internal->read_ahead = larg; 1212 return (l); 1213 1214 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1215 ctx->internal->msg_callback_arg = parg; 1216 return (1); 1217 1218 case SSL_CTRL_GET_MAX_CERT_LIST: 1219 return (ctx->internal->max_cert_list); 1220 case SSL_CTRL_SET_MAX_CERT_LIST: 1221 l = ctx->internal->max_cert_list; 1222 ctx->internal->max_cert_list = larg; 1223 return (l); 1224 1225 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1226 l = ctx->internal->session_cache_size; 1227 ctx->internal->session_cache_size = larg; 1228 return (l); 1229 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1230 return (ctx->internal->session_cache_size); 1231 case SSL_CTRL_SET_SESS_CACHE_MODE: 1232 l = ctx->internal->session_cache_mode; 1233 ctx->internal->session_cache_mode = larg; 1234 return (l); 1235 case SSL_CTRL_GET_SESS_CACHE_MODE: 1236 return (ctx->internal->session_cache_mode); 1237 1238 case SSL_CTRL_SESS_NUMBER: 1239 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1240 case SSL_CTRL_SESS_CONNECT: 1241 return (ctx->internal->stats.sess_connect); 1242 case SSL_CTRL_SESS_CONNECT_GOOD: 1243 return (ctx->internal->stats.sess_connect_good); 1244 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1245 return (ctx->internal->stats.sess_connect_renegotiate); 1246 case SSL_CTRL_SESS_ACCEPT: 1247 return (ctx->internal->stats.sess_accept); 1248 case SSL_CTRL_SESS_ACCEPT_GOOD: 1249 return (ctx->internal->stats.sess_accept_good); 1250 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1251 return (ctx->internal->stats.sess_accept_renegotiate); 1252 case SSL_CTRL_SESS_HIT: 1253 return (ctx->internal->stats.sess_hit); 1254 case SSL_CTRL_SESS_CB_HIT: 1255 return (ctx->internal->stats.sess_cb_hit); 1256 case SSL_CTRL_SESS_MISSES: 1257 return (ctx->internal->stats.sess_miss); 1258 case SSL_CTRL_SESS_TIMEOUTS: 1259 return (ctx->internal->stats.sess_timeout); 1260 case SSL_CTRL_SESS_CACHE_FULL: 1261 return (ctx->internal->stats.sess_cache_full); 1262 case SSL_CTRL_OPTIONS: 1263 return (ctx->internal->options|=larg); 1264 case SSL_CTRL_CLEAR_OPTIONS: 1265 return (ctx->internal->options&=~larg); 1266 case SSL_CTRL_MODE: 1267 return (ctx->internal->mode|=larg); 1268 case SSL_CTRL_CLEAR_MODE: 1269 return (ctx->internal->mode&=~larg); 1270 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1271 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1272 return (0); 1273 ctx->internal->max_send_fragment = larg; 1274 return (1); 1275 default: 1276 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1277 } 1278 } 1279 1280 long 1281 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1282 { 1283 switch (cmd) { 1284 case SSL_CTRL_SET_MSG_CALLBACK: 1285 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1286 return (1); 1287 1288 default: 1289 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1290 } 1291 } 1292 1293 int 1294 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1295 { 1296 long l; 1297 1298 l = a->id - b->id; 1299 if (l == 0L) 1300 return (0); 1301 else 1302 return ((l > 0) ? 1:-1); 1303 } 1304 1305 STACK_OF(SSL_CIPHER) * 1306 SSL_get_ciphers(const SSL *s) 1307 { 1308 if (s == NULL) 1309 return (NULL); 1310 if (s->cipher_list != NULL) 1311 return (s->cipher_list); 1312 1313 return (s->ctx->cipher_list); 1314 } 1315 1316 STACK_OF(SSL_CIPHER) * 1317 SSL_get_client_ciphers(const SSL *s) 1318 { 1319 if (s == NULL || s->session == NULL || !s->server) 1320 return NULL; 1321 return s->session->ciphers; 1322 } 1323 1324 STACK_OF(SSL_CIPHER) * 1325 SSL_get1_supported_ciphers(SSL *s) 1326 { 1327 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1328 const SSL_CIPHER *cipher; 1329 uint16_t min_vers, max_vers; 1330 int i; 1331 1332 if (s == NULL) 1333 return NULL; 1334 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1335 return NULL; 1336 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1337 return NULL; 1338 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1339 return NULL; 1340 1341 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1342 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1343 goto err; 1344 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1345 max_vers)) 1346 continue; 1347 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1348 goto err; 1349 } 1350 1351 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1352 return supported_ciphers; 1353 1354 err: 1355 sk_SSL_CIPHER_free(supported_ciphers); 1356 return NULL; 1357 } 1358 1359 /* See if we have any ECC cipher suites. */ 1360 int 1361 ssl_has_ecc_ciphers(SSL *s) 1362 { 1363 STACK_OF(SSL_CIPHER) *ciphers; 1364 unsigned long alg_k, alg_a; 1365 SSL_CIPHER *cipher; 1366 int i; 1367 1368 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1369 return 0; 1370 1371 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1372 cipher = sk_SSL_CIPHER_value(ciphers, i); 1373 1374 alg_k = cipher->algorithm_mkey; 1375 alg_a = cipher->algorithm_auth; 1376 1377 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1378 return 1; 1379 } 1380 1381 return 0; 1382 } 1383 1384 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1385 const char * 1386 SSL_get_cipher_list(const SSL *s, int n) 1387 { 1388 STACK_OF(SSL_CIPHER) *ciphers; 1389 const SSL_CIPHER *cipher; 1390 1391 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1392 return (NULL); 1393 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1394 return (NULL); 1395 1396 return (cipher->name); 1397 } 1398 1399 STACK_OF(SSL_CIPHER) * 1400 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1401 { 1402 if (ctx == NULL) 1403 return NULL; 1404 return ctx->cipher_list; 1405 } 1406 1407 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1408 int 1409 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1410 { 1411 STACK_OF(SSL_CIPHER) *ciphers; 1412 1413 /* 1414 * ssl_create_cipher_list may return an empty stack if it was unable to 1415 * find a cipher matching the given rule string (for example if the 1416 * rule string specifies a cipher which has been disabled). This is not 1417 * an error as far as ssl_create_cipher_list is concerned, and hence 1418 * ctx->cipher_list has been updated. 1419 */ 1420 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1421 ctx->internal->cipher_list_tls13, str); 1422 if (ciphers == NULL) { 1423 return (0); 1424 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1425 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1426 return (0); 1427 } 1428 return (1); 1429 } 1430 1431 int 1432 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1433 { 1434 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1435 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1436 return 0; 1437 } 1438 if (!ssl_merge_cipherlists(ctx->cipher_list, 1439 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1440 return 0; 1441 1442 return 1; 1443 } 1444 1445 /* Specify the ciphers to be used by the SSL. */ 1446 int 1447 SSL_set_cipher_list(SSL *s, const char *str) 1448 { 1449 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1450 1451 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1452 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1453 1454 /* See comment in SSL_CTX_set_cipher_list. */ 1455 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1456 ciphers_tls13, str); 1457 if (ciphers == NULL) { 1458 return (0); 1459 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1460 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1461 return (0); 1462 } 1463 return (1); 1464 } 1465 1466 int 1467 SSL_set_ciphersuites(SSL *s, const char *str) 1468 { 1469 STACK_OF(SSL_CIPHER) *ciphers; 1470 1471 if ((ciphers = s->cipher_list) == NULL) 1472 ciphers = s->ctx->cipher_list; 1473 1474 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1475 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1476 return (0); 1477 } 1478 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1479 &s->cipher_list)) 1480 return 0; 1481 1482 return 1; 1483 } 1484 1485 char * 1486 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1487 { 1488 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1489 const SSL_CIPHER *cipher; 1490 size_t curlen = 0; 1491 char *end; 1492 int i; 1493 1494 if (!s->server || s->session == NULL || len < 2) 1495 return NULL; 1496 1497 if ((client_ciphers = s->session->ciphers) == NULL) 1498 return NULL; 1499 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1500 return NULL; 1501 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1502 sk_SSL_CIPHER_num(server_ciphers) == 0) 1503 return NULL; 1504 1505 buf[0] = '\0'; 1506 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1507 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1508 1509 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1510 continue; 1511 1512 end = buf + curlen; 1513 if (strlcat(buf, cipher->name, len) >= len || 1514 (curlen = strlcat(buf, ":", len)) >= len) { 1515 /* remove truncated cipher from list */ 1516 *end = '\0'; 1517 break; 1518 } 1519 } 1520 /* remove trailing colon */ 1521 if ((end = strrchr(buf, ':')) != NULL) 1522 *end = '\0'; 1523 return buf; 1524 } 1525 1526 /* 1527 * Return a servername extension value if provided in Client Hello, or NULL. 1528 * So far, only host_name types are defined (RFC 3546). 1529 */ 1530 const char * 1531 SSL_get_servername(const SSL *s, const int type) 1532 { 1533 if (type != TLSEXT_NAMETYPE_host_name) 1534 return (NULL); 1535 1536 return (s->session && !s->tlsext_hostname ? 1537 s->session->tlsext_hostname : 1538 s->tlsext_hostname); 1539 } 1540 1541 int 1542 SSL_get_servername_type(const SSL *s) 1543 { 1544 if (s->session && 1545 (!s->tlsext_hostname ? 1546 s->session->tlsext_hostname : s->tlsext_hostname)) 1547 return (TLSEXT_NAMETYPE_host_name); 1548 return (-1); 1549 } 1550 1551 /* 1552 * SSL_select_next_proto implements standard protocol selection. It is 1553 * expected that this function is called from the callback set by 1554 * SSL_CTX_set_alpn_select_cb. 1555 * 1556 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1557 * strings. The length byte itself is not included in the length. A byte 1558 * string of length 0 is invalid. No byte string may be truncated. 1559 * 1560 * It returns either: 1561 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1562 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1563 */ 1564 int 1565 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1566 const unsigned char *server, unsigned int server_len, 1567 const unsigned char *client, unsigned int client_len) 1568 { 1569 unsigned int i, j; 1570 const unsigned char *result; 1571 int status = OPENSSL_NPN_UNSUPPORTED; 1572 1573 /* 1574 * For each protocol in server preference order, 1575 * see if we support it. 1576 */ 1577 for (i = 0; i < server_len; ) { 1578 for (j = 0; j < client_len; ) { 1579 if (server[i] == client[j] && 1580 memcmp(&server[i + 1], 1581 &client[j + 1], server[i]) == 0) { 1582 /* We found a match */ 1583 result = &server[i]; 1584 status = OPENSSL_NPN_NEGOTIATED; 1585 goto found; 1586 } 1587 j += client[j]; 1588 j++; 1589 } 1590 i += server[i]; 1591 i++; 1592 } 1593 1594 /* There's no overlap between our protocols and the server's list. */ 1595 result = client; 1596 status = OPENSSL_NPN_NO_OVERLAP; 1597 1598 found: 1599 *out = (unsigned char *) result + 1; 1600 *outlen = result[0]; 1601 return (status); 1602 } 1603 1604 /* SSL_get0_next_proto_negotiated is deprecated. */ 1605 void 1606 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1607 unsigned int *len) 1608 { 1609 *data = NULL; 1610 *len = 0; 1611 } 1612 1613 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1614 void 1615 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1616 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1617 { 1618 } 1619 1620 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1621 void 1622 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1623 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1624 unsigned int inlen, void *arg), void *arg) 1625 { 1626 } 1627 1628 /* 1629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1630 * protocols, which must be in wire-format (i.e. a series of non-empty, 1631 * 8-bit length-prefixed strings). Returns 0 on success. 1632 */ 1633 int 1634 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1635 unsigned int protos_len) 1636 { 1637 int failed = 1; 1638 1639 if (protos == NULL || protos_len == 0) 1640 goto err; 1641 1642 free(ctx->internal->alpn_client_proto_list); 1643 ctx->internal->alpn_client_proto_list = NULL; 1644 ctx->internal->alpn_client_proto_list_len = 0; 1645 1646 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1647 == NULL) 1648 goto err; 1649 ctx->internal->alpn_client_proto_list_len = protos_len; 1650 1651 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1652 1653 failed = 0; 1654 1655 err: 1656 /* NOTE: Return values are the reverse of what you expect. */ 1657 return (failed); 1658 } 1659 1660 /* 1661 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1662 * protocols, which must be in wire-format (i.e. a series of non-empty, 1663 * 8-bit length-prefixed strings). Returns 0 on success. 1664 */ 1665 int 1666 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1667 unsigned int protos_len) 1668 { 1669 int failed = 1; 1670 1671 if (protos == NULL || protos_len == 0) 1672 goto err; 1673 1674 free(ssl->internal->alpn_client_proto_list); 1675 ssl->internal->alpn_client_proto_list = NULL; 1676 ssl->internal->alpn_client_proto_list_len = 0; 1677 1678 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1679 == NULL) 1680 goto err; 1681 ssl->internal->alpn_client_proto_list_len = protos_len; 1682 1683 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1684 1685 failed = 0; 1686 1687 err: 1688 /* NOTE: Return values are the reverse of what you expect. */ 1689 return (failed); 1690 } 1691 1692 /* 1693 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1694 * ClientHello processing in order to select an ALPN protocol from the 1695 * client's list of offered protocols. 1696 */ 1697 void 1698 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1699 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1700 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1701 { 1702 ctx->internal->alpn_select_cb = cb; 1703 ctx->internal->alpn_select_cb_arg = arg; 1704 } 1705 1706 /* 1707 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1708 * it sets data to point to len bytes of protocol name (not including the 1709 * leading length-prefix byte). If the server didn't respond with* a negotiated 1710 * protocol then len will be zero. 1711 */ 1712 void 1713 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1714 unsigned int *len) 1715 { 1716 *data = ssl->s3->internal->alpn_selected; 1717 *len = ssl->s3->internal->alpn_selected_len; 1718 } 1719 1720 int 1721 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1722 const char *label, size_t llen, const unsigned char *p, size_t plen, 1723 int use_context) 1724 { 1725 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1726 if (!use_context) { 1727 p = NULL; 1728 plen = 0; 1729 } 1730 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1731 out, olen); 1732 } 1733 1734 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1735 use_context)); 1736 } 1737 1738 static unsigned long 1739 ssl_session_hash(const SSL_SESSION *a) 1740 { 1741 unsigned long l; 1742 1743 l = (unsigned long) 1744 ((unsigned int) a->session_id[0] )| 1745 ((unsigned int) a->session_id[1]<< 8L)| 1746 ((unsigned long)a->session_id[2]<<16L)| 1747 ((unsigned long)a->session_id[3]<<24L); 1748 return (l); 1749 } 1750 1751 /* 1752 * NB: If this function (or indeed the hash function which uses a sort of 1753 * coarser function than this one) is changed, ensure 1754 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1755 * able to construct an SSL_SESSION that will collide with any existing session 1756 * with a matching session ID. 1757 */ 1758 static int 1759 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1760 { 1761 if (a->ssl_version != b->ssl_version) 1762 return (1); 1763 if (a->session_id_length != b->session_id_length) 1764 return (1); 1765 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1766 return (1); 1767 return (0); 1768 } 1769 1770 /* 1771 * These wrapper functions should remain rather than redeclaring 1772 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1773 * variable. The reason is that the functions aren't static, they're exposed via 1774 * ssl.h. 1775 */ 1776 static unsigned long 1777 ssl_session_LHASH_HASH(const void *arg) 1778 { 1779 const SSL_SESSION *a = arg; 1780 1781 return ssl_session_hash(a); 1782 } 1783 1784 static int 1785 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1786 { 1787 const SSL_SESSION *a = arg1; 1788 const SSL_SESSION *b = arg2; 1789 1790 return ssl_session_cmp(a, b); 1791 } 1792 1793 SSL_CTX * 1794 SSL_CTX_new(const SSL_METHOD *meth) 1795 { 1796 SSL_CTX *ret; 1797 1798 if (!OPENSSL_init_ssl(0, NULL)) { 1799 SSLerrorx(SSL_R_LIBRARY_BUG); 1800 return (NULL); 1801 } 1802 1803 if (meth == NULL) { 1804 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1805 return (NULL); 1806 } 1807 1808 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1809 SSLerrorx(ERR_R_MALLOC_FAILURE); 1810 return (NULL); 1811 } 1812 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1813 free(ret); 1814 SSLerrorx(ERR_R_MALLOC_FAILURE); 1815 return (NULL); 1816 } 1817 1818 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1819 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1820 goto err; 1821 } 1822 1823 ret->method = meth; 1824 ret->internal->min_tls_version = meth->min_tls_version; 1825 ret->internal->max_tls_version = meth->max_tls_version; 1826 ret->internal->min_proto_version = 0; 1827 ret->internal->max_proto_version = 0; 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.cipher->algorithm_auth; 2107 alg_k = S3I(s)->hs.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.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.cipher); 2146 2147 alg_a = S3I(s)->hs.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.cipher->algorithm_auth & SSL_aNULL) { 2207 keylen = 1024; 2208 if (S3I(s)->hs.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 static int 2246 ssl_should_update_external_cache(SSL *s, int mode) 2247 { 2248 int cache_mode; 2249 2250 cache_mode = s->session_ctx->internal->session_cache_mode; 2251 2252 /* Don't cache if mode says not to */ 2253 if ((cache_mode & mode) == 0) 2254 return 0; 2255 2256 /* if it is not already cached, cache it */ 2257 if (!s->internal->hit) 2258 return 1; 2259 2260 /* If it's TLS 1.3, do it to match OpenSSL */ 2261 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2262 return 1; 2263 2264 return 0; 2265 } 2266 2267 static int 2268 ssl_should_update_internal_cache(SSL *s, int mode) 2269 { 2270 int cache_mode; 2271 2272 cache_mode = s->session_ctx->internal->session_cache_mode; 2273 2274 /* Don't cache if mode says not to */ 2275 if ((cache_mode & mode) == 0) 2276 return 0; 2277 2278 /* If it is already cached, don't cache it again */ 2279 if (s->internal->hit) 2280 return 0; 2281 2282 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2283 return 0; 2284 2285 /* If we are lesser than TLS 1.3, Cache it. */ 2286 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2287 return 1; 2288 2289 /* Below this we consider TLS 1.3 or later */ 2290 2291 /* If it's not a server, add it? OpenSSL does this. */ 2292 if (!s->server) 2293 return 1; 2294 2295 /* XXX if we support early data / PSK need to add */ 2296 2297 /* 2298 * If we have the remove session callback, we will want 2299 * to know about this even if it's a stateless ticket 2300 * from 1.3 so we can know when it is removed. 2301 */ 2302 if (s->session_ctx->internal->remove_session_cb != NULL) 2303 return 1; 2304 2305 /* If we have set OP_NO_TICKET, cache it. */ 2306 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2307 return 1; 2308 2309 /* Otherwise do not cache */ 2310 return 0; 2311 } 2312 2313 void 2314 ssl_update_cache(SSL *s, int mode) 2315 { 2316 int cache_mode, do_callback; 2317 2318 if (s->session->session_id_length == 0) 2319 return; 2320 2321 cache_mode = s->session_ctx->internal->session_cache_mode; 2322 do_callback = ssl_should_update_external_cache(s, mode); 2323 2324 if (ssl_should_update_internal_cache(s, mode)) { 2325 /* 2326 * XXX should we fail if the add to the internal cache 2327 * fails? OpenSSL doesn't care.. 2328 */ 2329 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2330 } 2331 2332 /* 2333 * Update the "external cache" by calling the new session 2334 * callback if present, even with TLS 1.3 without early data 2335 * "because some application just want to know about the 2336 * creation of a session and aren't doing a full cache". 2337 * Apparently, if they are doing a full cache, they'll have 2338 * some fun, but we endeavour to give application writers the 2339 * same glorious experience they expect from OpenSSL which 2340 * does it this way. 2341 */ 2342 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2343 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2344 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2345 SSL_SESSION_free(s->session); 2346 } 2347 2348 /* Auto flush every 255 connections. */ 2349 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2350 (cache_mode & mode) != 0) { 2351 int connections; 2352 if (mode & SSL_SESS_CACHE_CLIENT) 2353 connections = s->session_ctx->internal->stats.sess_connect_good; 2354 else 2355 connections = s->session_ctx->internal->stats.sess_accept_good; 2356 if ((connections & 0xff) == 0xff) 2357 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2358 } 2359 } 2360 2361 const SSL_METHOD * 2362 SSL_get_ssl_method(SSL *s) 2363 { 2364 return (s->method); 2365 } 2366 2367 int 2368 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2369 { 2370 int (*handshake_func)(SSL *) = NULL; 2371 int ret = 1; 2372 2373 if (s->method == method) 2374 return (ret); 2375 2376 if (s->internal->handshake_func == s->method->ssl_connect) 2377 handshake_func = method->ssl_connect; 2378 else if (s->internal->handshake_func == s->method->ssl_accept) 2379 handshake_func = method->ssl_accept; 2380 2381 if (s->method->version == method->version) { 2382 s->method = method; 2383 } else { 2384 s->method->ssl_free(s); 2385 s->method = method; 2386 ret = s->method->ssl_new(s); 2387 } 2388 s->internal->handshake_func = handshake_func; 2389 2390 return (ret); 2391 } 2392 2393 int 2394 SSL_get_error(const SSL *s, int i) 2395 { 2396 int reason; 2397 unsigned long l; 2398 BIO *bio; 2399 2400 if (i > 0) 2401 return (SSL_ERROR_NONE); 2402 2403 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2404 * etc, where we do encode the error */ 2405 if ((l = ERR_peek_error()) != 0) { 2406 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2407 return (SSL_ERROR_SYSCALL); 2408 else 2409 return (SSL_ERROR_SSL); 2410 } 2411 2412 if ((i < 0) && SSL_want_read(s)) { 2413 bio = SSL_get_rbio(s); 2414 if (BIO_should_read(bio)) { 2415 return (SSL_ERROR_WANT_READ); 2416 } else if (BIO_should_write(bio)) { 2417 /* 2418 * This one doesn't make too much sense... We never 2419 * try to write to the rbio, and an application 2420 * program where rbio and wbio are separate couldn't 2421 * even know what it should wait for. However if we 2422 * ever set s->internal->rwstate incorrectly (so that we have 2423 * SSL_want_read(s) instead of SSL_want_write(s)) 2424 * and rbio and wbio *are* the same, this test works 2425 * around that bug; so it might be safer to keep it. 2426 */ 2427 return (SSL_ERROR_WANT_WRITE); 2428 } else if (BIO_should_io_special(bio)) { 2429 reason = BIO_get_retry_reason(bio); 2430 if (reason == BIO_RR_CONNECT) 2431 return (SSL_ERROR_WANT_CONNECT); 2432 else if (reason == BIO_RR_ACCEPT) 2433 return (SSL_ERROR_WANT_ACCEPT); 2434 else 2435 return (SSL_ERROR_SYSCALL); /* unknown */ 2436 } 2437 } 2438 2439 if ((i < 0) && SSL_want_write(s)) { 2440 bio = SSL_get_wbio(s); 2441 if (BIO_should_write(bio)) { 2442 return (SSL_ERROR_WANT_WRITE); 2443 } else if (BIO_should_read(bio)) { 2444 /* 2445 * See above (SSL_want_read(s) with 2446 * BIO_should_write(bio)) 2447 */ 2448 return (SSL_ERROR_WANT_READ); 2449 } else if (BIO_should_io_special(bio)) { 2450 reason = BIO_get_retry_reason(bio); 2451 if (reason == BIO_RR_CONNECT) 2452 return (SSL_ERROR_WANT_CONNECT); 2453 else if (reason == BIO_RR_ACCEPT) 2454 return (SSL_ERROR_WANT_ACCEPT); 2455 else 2456 return (SSL_ERROR_SYSCALL); 2457 } 2458 } 2459 if ((i < 0) && SSL_want_x509_lookup(s)) { 2460 return (SSL_ERROR_WANT_X509_LOOKUP); 2461 } 2462 2463 if (i == 0) { 2464 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2465 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2466 return (SSL_ERROR_ZERO_RETURN); 2467 } 2468 return (SSL_ERROR_SYSCALL); 2469 } 2470 2471 int 2472 SSL_do_handshake(SSL *s) 2473 { 2474 int ret = 1; 2475 2476 if (s->internal->handshake_func == NULL) { 2477 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2478 return (-1); 2479 } 2480 2481 s->method->ssl_renegotiate_check(s); 2482 2483 if (SSL_in_init(s) || SSL_in_before(s)) { 2484 ret = s->internal->handshake_func(s); 2485 } 2486 return (ret); 2487 } 2488 2489 /* 2490 * For the next 2 functions, SSL_clear() sets shutdown and so 2491 * one of these calls will reset it 2492 */ 2493 void 2494 SSL_set_accept_state(SSL *s) 2495 { 2496 s->server = 1; 2497 s->internal->shutdown = 0; 2498 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2499 s->internal->handshake_func = s->method->ssl_accept; 2500 ssl_clear_cipher_state(s); 2501 } 2502 2503 void 2504 SSL_set_connect_state(SSL *s) 2505 { 2506 s->server = 0; 2507 s->internal->shutdown = 0; 2508 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2509 s->internal->handshake_func = s->method->ssl_connect; 2510 ssl_clear_cipher_state(s); 2511 } 2512 2513 int 2514 ssl_undefined_function(SSL *s) 2515 { 2516 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2517 return (0); 2518 } 2519 2520 int 2521 ssl_undefined_void_function(void) 2522 { 2523 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2524 return (0); 2525 } 2526 2527 int 2528 ssl_undefined_const_function(const SSL *s) 2529 { 2530 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2531 return (0); 2532 } 2533 2534 const char * 2535 ssl_version_string(int ver) 2536 { 2537 switch (ver) { 2538 case TLS1_VERSION: 2539 return (SSL_TXT_TLSV1); 2540 case TLS1_1_VERSION: 2541 return (SSL_TXT_TLSV1_1); 2542 case TLS1_2_VERSION: 2543 return (SSL_TXT_TLSV1_2); 2544 case TLS1_3_VERSION: 2545 return (SSL_TXT_TLSV1_3); 2546 case DTLS1_VERSION: 2547 return (SSL_TXT_DTLS1); 2548 case DTLS1_2_VERSION: 2549 return (SSL_TXT_DTLS1_2); 2550 default: 2551 return ("unknown"); 2552 } 2553 } 2554 2555 const char * 2556 SSL_get_version(const SSL *s) 2557 { 2558 return ssl_version_string(s->version); 2559 } 2560 2561 SSL * 2562 SSL_dup(SSL *s) 2563 { 2564 STACK_OF(X509_NAME) *sk; 2565 X509_NAME *xn; 2566 SSL *ret; 2567 int i; 2568 2569 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2570 goto err; 2571 2572 ret->version = s->version; 2573 ret->method = s->method; 2574 2575 if (s->session != NULL) { 2576 if (!SSL_copy_session_id(ret, s)) 2577 goto err; 2578 } else { 2579 /* 2580 * No session has been established yet, so we have to expect 2581 * that s->cert or ret->cert will be changed later -- 2582 * they should not both point to the same object, 2583 * and thus we can't use SSL_copy_session_id. 2584 */ 2585 2586 ret->method->ssl_free(ret); 2587 ret->method = s->method; 2588 ret->method->ssl_new(ret); 2589 2590 ssl_cert_free(ret->cert); 2591 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2592 goto err; 2593 2594 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2595 s->sid_ctx_length)) 2596 goto err; 2597 } 2598 2599 ret->internal->options = s->internal->options; 2600 ret->internal->mode = s->internal->mode; 2601 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2602 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2603 ret->internal->msg_callback = s->internal->msg_callback; 2604 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2605 SSL_set_verify(ret, SSL_get_verify_mode(s), 2606 SSL_get_verify_callback(s)); 2607 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2608 ret->internal->generate_session_id = s->internal->generate_session_id; 2609 2610 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2611 2612 ret->internal->debug = s->internal->debug; 2613 2614 /* copy app data, a little dangerous perhaps */ 2615 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2616 &ret->internal->ex_data, &s->internal->ex_data)) 2617 goto err; 2618 2619 /* setup rbio, and wbio */ 2620 if (s->rbio != NULL) { 2621 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2622 goto err; 2623 } 2624 if (s->wbio != NULL) { 2625 if (s->wbio != s->rbio) { 2626 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2627 goto err; 2628 } else 2629 ret->wbio = ret->rbio; 2630 } 2631 ret->internal->rwstate = s->internal->rwstate; 2632 ret->internal->in_handshake = s->internal->in_handshake; 2633 ret->internal->handshake_func = s->internal->handshake_func; 2634 ret->server = s->server; 2635 ret->internal->renegotiate = s->internal->renegotiate; 2636 ret->internal->new_session = s->internal->new_session; 2637 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2638 ret->internal->shutdown = s->internal->shutdown; 2639 /* SSL_dup does not really work at any state, though */ 2640 S3I(ret)->hs.state = S3I(s)->hs.state; 2641 ret->internal->rstate = s->internal->rstate; 2642 2643 /* 2644 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2645 * ret->init_off 2646 */ 2647 ret->internal->init_num = 0; 2648 2649 ret->internal->hit = s->internal->hit; 2650 2651 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2652 2653 if (s->cipher_list != NULL) { 2654 if ((ret->cipher_list = 2655 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2656 goto err; 2657 } 2658 if (s->internal->cipher_list_tls13 != NULL) { 2659 if ((ret->internal->cipher_list_tls13 = 2660 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2661 goto err; 2662 } 2663 2664 /* Dup the client_CA list */ 2665 if (s->internal->client_CA != NULL) { 2666 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2667 ret->internal->client_CA = sk; 2668 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2669 xn = sk_X509_NAME_value(sk, i); 2670 if (sk_X509_NAME_set(sk, i, 2671 X509_NAME_dup(xn)) == NULL) { 2672 X509_NAME_free(xn); 2673 goto err; 2674 } 2675 } 2676 } 2677 2678 return ret; 2679 err: 2680 SSL_free(ret); 2681 return NULL; 2682 } 2683 2684 void 2685 ssl_clear_cipher_state(SSL *s) 2686 { 2687 ssl_clear_cipher_read_state(s); 2688 ssl_clear_cipher_write_state(s); 2689 } 2690 2691 void 2692 ssl_clear_cipher_read_state(SSL *s) 2693 { 2694 tls12_record_layer_clear_read_state(s->internal->rl); 2695 tls12_record_layer_read_cipher_hash(s->internal->rl, 2696 &s->enc_read_ctx, &s->read_hash); 2697 } 2698 2699 void 2700 ssl_clear_cipher_write_state(SSL *s) 2701 { 2702 tls12_record_layer_clear_write_state(s->internal->rl); 2703 } 2704 2705 void 2706 ssl_info_callback(const SSL *s, int type, int value) 2707 { 2708 ssl_info_callback_fn *cb; 2709 2710 if ((cb = s->internal->info_callback) == NULL) 2711 cb = s->ctx->internal->info_callback; 2712 if (cb != NULL) 2713 cb(s, type, value); 2714 } 2715 2716 void 2717 ssl_msg_callback(SSL *s, int is_write, int content_type, 2718 const void *msg_buf, size_t msg_len) 2719 { 2720 if (s->internal->msg_callback != NULL) 2721 s->internal->msg_callback(is_write, s->version, content_type, 2722 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2723 } 2724 2725 /* Fix this function so that it takes an optional type parameter */ 2726 X509 * 2727 SSL_get_certificate(const SSL *s) 2728 { 2729 return (s->cert->key->x509); 2730 } 2731 2732 /* Fix this function so that it takes an optional type parameter */ 2733 EVP_PKEY * 2734 SSL_get_privatekey(const SSL *s) 2735 { 2736 return (s->cert->key->privatekey); 2737 } 2738 2739 const SSL_CIPHER * 2740 SSL_get_current_cipher(const SSL *s) 2741 { 2742 if ((s->session != NULL) && (s->session->cipher != NULL)) 2743 return (s->session->cipher); 2744 return (NULL); 2745 } 2746 const void * 2747 SSL_get_current_compression(SSL *s) 2748 { 2749 return (NULL); 2750 } 2751 2752 const void * 2753 SSL_get_current_expansion(SSL *s) 2754 { 2755 return (NULL); 2756 } 2757 2758 size_t 2759 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2760 { 2761 size_t len = sizeof(s->s3->client_random); 2762 2763 if (out == NULL) 2764 return len; 2765 2766 if (len > max_out) 2767 len = max_out; 2768 2769 memcpy(out, s->s3->client_random, len); 2770 2771 return len; 2772 } 2773 2774 size_t 2775 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2776 { 2777 size_t len = sizeof(s->s3->server_random); 2778 2779 if (out == NULL) 2780 return len; 2781 2782 if (len > max_out) 2783 len = max_out; 2784 2785 memcpy(out, s->s3->server_random, len); 2786 2787 return len; 2788 } 2789 2790 int 2791 ssl_init_wbio_buffer(SSL *s, int push) 2792 { 2793 BIO *bbio; 2794 2795 if (s->bbio == NULL) { 2796 bbio = BIO_new(BIO_f_buffer()); 2797 if (bbio == NULL) 2798 return (0); 2799 s->bbio = bbio; 2800 } else { 2801 bbio = s->bbio; 2802 if (s->bbio == s->wbio) 2803 s->wbio = BIO_pop(s->wbio); 2804 } 2805 (void)BIO_reset(bbio); 2806 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2807 if (!BIO_set_read_buffer_size(bbio, 1)) { 2808 SSLerror(s, ERR_R_BUF_LIB); 2809 return (0); 2810 } 2811 if (push) { 2812 if (s->wbio != bbio) 2813 s->wbio = BIO_push(bbio, s->wbio); 2814 } else { 2815 if (s->wbio == bbio) 2816 s->wbio = BIO_pop(bbio); 2817 } 2818 return (1); 2819 } 2820 2821 void 2822 ssl_free_wbio_buffer(SSL *s) 2823 { 2824 if (s == NULL) 2825 return; 2826 2827 if (s->bbio == NULL) 2828 return; 2829 2830 if (s->bbio == s->wbio) { 2831 /* remove buffering */ 2832 s->wbio = BIO_pop(s->wbio); 2833 } 2834 BIO_free(s->bbio); 2835 s->bbio = NULL; 2836 } 2837 2838 void 2839 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2840 { 2841 ctx->internal->quiet_shutdown = mode; 2842 } 2843 2844 int 2845 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2846 { 2847 return (ctx->internal->quiet_shutdown); 2848 } 2849 2850 void 2851 SSL_set_quiet_shutdown(SSL *s, int mode) 2852 { 2853 s->internal->quiet_shutdown = mode; 2854 } 2855 2856 int 2857 SSL_get_quiet_shutdown(const SSL *s) 2858 { 2859 return (s->internal->quiet_shutdown); 2860 } 2861 2862 void 2863 SSL_set_shutdown(SSL *s, int mode) 2864 { 2865 s->internal->shutdown = mode; 2866 } 2867 2868 int 2869 SSL_get_shutdown(const SSL *s) 2870 { 2871 return (s->internal->shutdown); 2872 } 2873 2874 int 2875 SSL_version(const SSL *s) 2876 { 2877 return (s->version); 2878 } 2879 2880 SSL_CTX * 2881 SSL_get_SSL_CTX(const SSL *ssl) 2882 { 2883 return (ssl->ctx); 2884 } 2885 2886 SSL_CTX * 2887 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2888 { 2889 CERT *new_cert; 2890 2891 if (ctx == NULL) 2892 ctx = ssl->initial_ctx; 2893 if (ssl->ctx == ctx) 2894 return (ssl->ctx); 2895 2896 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2897 return NULL; 2898 ssl_cert_free(ssl->cert); 2899 ssl->cert = new_cert; 2900 2901 SSL_CTX_up_ref(ctx); 2902 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2903 ssl->ctx = ctx; 2904 2905 return (ssl->ctx); 2906 } 2907 2908 int 2909 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2910 { 2911 return (X509_STORE_set_default_paths(ctx->cert_store)); 2912 } 2913 2914 int 2915 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2916 const char *CApath) 2917 { 2918 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2919 } 2920 2921 int 2922 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2923 { 2924 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2925 } 2926 2927 void 2928 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2929 { 2930 ssl->internal->info_callback = cb; 2931 } 2932 2933 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2934 { 2935 return (ssl->internal->info_callback); 2936 } 2937 2938 int 2939 SSL_state(const SSL *ssl) 2940 { 2941 return (S3I(ssl)->hs.state); 2942 } 2943 2944 void 2945 SSL_set_state(SSL *ssl, int state) 2946 { 2947 S3I(ssl)->hs.state = state; 2948 } 2949 2950 void 2951 SSL_set_verify_result(SSL *ssl, long arg) 2952 { 2953 ssl->verify_result = arg; 2954 } 2955 2956 long 2957 SSL_get_verify_result(const SSL *ssl) 2958 { 2959 return (ssl->verify_result); 2960 } 2961 2962 int 2963 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2964 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2965 { 2966 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2967 new_func, dup_func, free_func)); 2968 } 2969 2970 int 2971 SSL_set_ex_data(SSL *s, int idx, void *arg) 2972 { 2973 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2974 } 2975 2976 void * 2977 SSL_get_ex_data(const SSL *s, int idx) 2978 { 2979 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2980 } 2981 2982 int 2983 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2984 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2985 { 2986 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2987 new_func, dup_func, free_func)); 2988 } 2989 2990 int 2991 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2992 { 2993 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2994 } 2995 2996 void * 2997 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2998 { 2999 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3000 } 3001 3002 int 3003 ssl_ok(SSL *s) 3004 { 3005 return (1); 3006 } 3007 3008 X509_STORE * 3009 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3010 { 3011 return (ctx->cert_store); 3012 } 3013 3014 void 3015 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3016 { 3017 X509_STORE_free(ctx->cert_store); 3018 ctx->cert_store = store; 3019 } 3020 3021 X509 * 3022 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3023 { 3024 if (ctx->internal->cert == NULL) 3025 return NULL; 3026 3027 return ctx->internal->cert->key->x509; 3028 } 3029 3030 int 3031 SSL_want(const SSL *s) 3032 { 3033 return (s->internal->rwstate); 3034 } 3035 3036 void 3037 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3038 int keylength)) 3039 { 3040 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3041 } 3042 3043 void 3044 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3045 int keylength)) 3046 { 3047 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3048 } 3049 3050 void 3051 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3052 int keylength)) 3053 { 3054 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3055 } 3056 3057 void 3058 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3059 int keylength)) 3060 { 3061 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3062 } 3063 3064 void 3065 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3066 int is_export, int keylength)) 3067 { 3068 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3069 (void (*)(void))ecdh); 3070 } 3071 3072 void 3073 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3074 int keylength)) 3075 { 3076 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3077 } 3078 3079 3080 void 3081 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3082 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3083 { 3084 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3085 (void (*)(void))cb); 3086 } 3087 3088 void 3089 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3090 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3091 { 3092 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3093 } 3094 3095 void 3096 SSL_set_debug(SSL *s, int debug) 3097 { 3098 s->internal->debug = debug; 3099 } 3100 3101 int 3102 SSL_cache_hit(SSL *s) 3103 { 3104 return (s->internal->hit); 3105 } 3106 3107 int 3108 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3109 { 3110 return ctx->internal->min_proto_version; 3111 } 3112 3113 int 3114 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3115 { 3116 return ssl_version_set_min(ctx->method, version, 3117 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3118 &ctx->internal->min_proto_version); 3119 } 3120 3121 int 3122 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3123 { 3124 return ctx->internal->max_proto_version; 3125 } 3126 3127 int 3128 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3129 { 3130 return ssl_version_set_max(ctx->method, version, 3131 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3132 &ctx->internal->max_proto_version); 3133 } 3134 3135 int 3136 SSL_get_min_proto_version(SSL *ssl) 3137 { 3138 return ssl->internal->min_proto_version; 3139 } 3140 3141 int 3142 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3143 { 3144 return ssl_version_set_min(ssl->method, version, 3145 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3146 &ssl->internal->min_proto_version); 3147 } 3148 int 3149 SSL_get_max_proto_version(SSL *ssl) 3150 { 3151 return ssl->internal->max_proto_version; 3152 } 3153 3154 int 3155 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3156 { 3157 return ssl_version_set_max(ssl->method, version, 3158 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3159 &ssl->internal->max_proto_version); 3160 } 3161 3162 const SSL_METHOD * 3163 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3164 { 3165 return ctx->method; 3166 } 3167 3168 static int 3169 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3170 { 3171 SSL_CIPHER const *a = a_; 3172 SSL_CIPHER const *b = b_; 3173 return ssl_cipher_id_cmp(a, b); 3174 } 3175 3176 SSL_CIPHER * 3177 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3178 { 3179 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3180 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3181 } 3182