1 /* $OpenBSD: ssl_lib.c,v 1.290 2022/03/18 18:01:17 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <limits.h> 148 #include <stdio.h> 149 150 #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 s->internal->num_tickets = ctx->internal->num_tickets; 268 269 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 270 goto err; 271 272 s->internal->read_ahead = ctx->internal->read_ahead; 273 s->internal->msg_callback = ctx->internal->msg_callback; 274 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 275 s->verify_mode = ctx->verify_mode; 276 s->sid_ctx_length = ctx->sid_ctx_length; 277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 278 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 279 s->internal->verify_callback = ctx->internal->default_verify_callback; 280 s->internal->generate_session_id = ctx->internal->generate_session_id; 281 282 s->param = X509_VERIFY_PARAM_new(); 283 if (!s->param) 284 goto err; 285 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 286 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 287 s->max_send_fragment = ctx->internal->max_send_fragment; 288 289 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 290 s->ctx = ctx; 291 s->internal->tlsext_debug_cb = 0; 292 s->internal->tlsext_debug_arg = NULL; 293 s->internal->tlsext_ticket_expected = 0; 294 s->tlsext_status_type = -1; 295 s->internal->tlsext_status_expected = 0; 296 s->internal->tlsext_ocsp_ids = NULL; 297 s->internal->tlsext_ocsp_exts = NULL; 298 s->internal->tlsext_ocsp_resp = NULL; 299 s->internal->tlsext_ocsp_resp_len = 0; 300 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 301 s->initial_ctx = ctx; 302 303 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 304 s->internal->tlsext_ecpointformatlist = 305 calloc(ctx->internal->tlsext_ecpointformatlist_length, 306 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 307 if (s->internal->tlsext_ecpointformatlist == NULL) 308 goto err; 309 memcpy(s->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist_length * 312 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 313 s->internal->tlsext_ecpointformatlist_length = 314 ctx->internal->tlsext_ecpointformatlist_length; 315 } 316 if (ctx->internal->tlsext_supportedgroups != NULL) { 317 s->internal->tlsext_supportedgroups = 318 calloc(ctx->internal->tlsext_supportedgroups_length, 319 sizeof(ctx->internal->tlsext_supportedgroups[0])); 320 if (s->internal->tlsext_supportedgroups == NULL) 321 goto err; 322 memcpy(s->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups_length * 325 sizeof(ctx->internal->tlsext_supportedgroups[0])); 326 s->internal->tlsext_supportedgroups_length = 327 ctx->internal->tlsext_supportedgroups_length; 328 } 329 330 if (s->ctx->internal->alpn_client_proto_list != NULL) { 331 s->internal->alpn_client_proto_list = 332 malloc(s->ctx->internal->alpn_client_proto_list_len); 333 if (s->internal->alpn_client_proto_list == NULL) 334 goto err; 335 memcpy(s->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list_len); 338 s->internal->alpn_client_proto_list_len = 339 s->ctx->internal->alpn_client_proto_list_len; 340 } 341 342 s->verify_result = X509_V_OK; 343 344 s->method = ctx->method; 345 346 if (!s->method->ssl_new(s)) 347 goto err; 348 349 s->references = 1; 350 s->server = ctx->method->server; 351 352 SSL_clear(s); 353 354 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 355 356 return (s); 357 358 err: 359 SSL_free(s); 360 SSLerrorx(ERR_R_MALLOC_FAILURE); 361 return (NULL); 362 } 363 364 int 365 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 366 unsigned int sid_ctx_len) 367 { 368 if (sid_ctx_len > sizeof ctx->sid_ctx) { 369 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 370 return (0); 371 } 372 ctx->sid_ctx_length = sid_ctx_len; 373 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 374 375 return (1); 376 } 377 378 int 379 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381 { 382 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 383 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ssl->sid_ctx_length = sid_ctx_len; 387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390 } 391 392 int 393 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 394 { 395 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 396 ctx->internal->generate_session_id = cb; 397 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 398 return (1); 399 } 400 401 int 402 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 403 { 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 405 ssl->internal->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 407 return (1); 408 } 409 410 int 411 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 412 unsigned int id_len) 413 { 414 /* 415 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 416 * shows how we can "construct" a session to give us the desired 417 * check - ie. to find if there's a session in the hash table 418 * that would conflict with any new session built out of this 419 * id/id_len and the ssl_version in use by this SSL. 420 */ 421 SSL_SESSION r, *p; 422 423 if (id_len > sizeof r.session_id) 424 return (0); 425 426 r.ssl_version = ssl->version; 427 r.session_id_length = id_len; 428 memcpy(r.session_id, id, id_len); 429 430 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 431 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 432 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 433 return (p != NULL); 434 } 435 436 int 437 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 438 { 439 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 440 } 441 442 int 443 SSL_set_purpose(SSL *s, int purpose) 444 { 445 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 446 } 447 448 int 449 SSL_CTX_set_trust(SSL_CTX *s, int trust) 450 { 451 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 452 } 453 454 int 455 SSL_set_trust(SSL *s, int trust) 456 { 457 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 458 } 459 460 int 461 SSL_set1_host(SSL *s, const char *hostname) 462 { 463 struct in_addr ina; 464 struct in6_addr in6a; 465 466 if (hostname != NULL && *hostname != '\0' && 467 (inet_pton(AF_INET, hostname, &ina) == 1 || 468 inet_pton(AF_INET6, hostname, &in6a) == 1)) 469 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 470 else 471 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 472 } 473 474 void 475 SSL_set_hostflags(SSL *s, unsigned int flags) 476 { 477 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 478 } 479 480 const char * 481 SSL_get0_peername(SSL *s) 482 { 483 return X509_VERIFY_PARAM_get0_peername(s->param); 484 } 485 486 X509_VERIFY_PARAM * 487 SSL_CTX_get0_param(SSL_CTX *ctx) 488 { 489 return (ctx->param); 490 } 491 492 int 493 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 494 { 495 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 496 } 497 498 X509_VERIFY_PARAM * 499 SSL_get0_param(SSL *ssl) 500 { 501 return (ssl->param); 502 } 503 504 int 505 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 506 { 507 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 508 } 509 510 void 511 SSL_free(SSL *s) 512 { 513 int i; 514 515 if (s == NULL) 516 return; 517 518 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 519 if (i > 0) 520 return; 521 522 X509_VERIFY_PARAM_free(s->param); 523 524 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 525 526 if (s->bbio != NULL) { 527 /* If the buffering BIO is in place, pop it off */ 528 if (s->bbio == s->wbio) { 529 s->wbio = BIO_pop(s->wbio); 530 } 531 BIO_free(s->bbio); 532 s->bbio = NULL; 533 } 534 535 if (s->rbio != s->wbio) 536 BIO_free_all(s->rbio); 537 BIO_free_all(s->wbio); 538 539 tls13_ctx_free(s->internal->tls13); 540 541 ssl3_release_init_buffer(s); 542 543 sk_SSL_CIPHER_free(s->cipher_list); 544 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 545 546 /* Make the next call work :-) */ 547 if (s->session != NULL) { 548 ssl_clear_bad_session(s); 549 SSL_SESSION_free(s->session); 550 } 551 552 ssl_clear_cipher_state(s); 553 554 ssl_cert_free(s->cert); 555 556 free(s->tlsext_hostname); 557 SSL_CTX_free(s->initial_ctx); 558 559 free(s->internal->tlsext_ecpointformatlist); 560 free(s->internal->tlsext_supportedgroups); 561 562 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 563 X509_EXTENSION_free); 564 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 565 free(s->internal->tlsext_ocsp_resp); 566 567 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 568 569 if (s->method != NULL) 570 s->method->ssl_free(s); 571 572 SSL_CTX_free(s->ctx); 573 574 free(s->internal->alpn_client_proto_list); 575 576 #ifndef OPENSSL_NO_SRTP 577 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 578 #endif 579 580 tls12_record_layer_free(s->internal->rl); 581 582 free(s->internal); 583 free(s); 584 } 585 586 int 587 SSL_up_ref(SSL *s) 588 { 589 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 590 return (refs > 1) ? 1 : 0; 591 } 592 593 void 594 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 595 { 596 /* If the output buffering BIO is still in place, remove it */ 597 if (s->bbio != NULL) { 598 if (s->wbio == s->bbio) { 599 s->wbio = BIO_next(s->wbio); 600 BIO_set_next(s->bbio, NULL); 601 } 602 } 603 604 if (s->rbio != rbio && s->rbio != s->wbio) 605 BIO_free_all(s->rbio); 606 if (s->wbio != wbio) 607 BIO_free_all(s->wbio); 608 s->rbio = rbio; 609 s->wbio = wbio; 610 } 611 612 BIO * 613 SSL_get_rbio(const SSL *s) 614 { 615 return (s->rbio); 616 } 617 618 void 619 SSL_set0_rbio(SSL *s, BIO *rbio) 620 { 621 BIO_free_all(s->rbio); 622 s->rbio = rbio; 623 } 624 625 BIO * 626 SSL_get_wbio(const SSL *s) 627 { 628 return (s->wbio); 629 } 630 631 int 632 SSL_get_fd(const SSL *s) 633 { 634 return (SSL_get_rfd(s)); 635 } 636 637 int 638 SSL_get_rfd(const SSL *s) 639 { 640 int ret = -1; 641 BIO *b, *r; 642 643 b = SSL_get_rbio(s); 644 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 645 if (r != NULL) 646 BIO_get_fd(r, &ret); 647 return (ret); 648 } 649 650 int 651 SSL_get_wfd(const SSL *s) 652 { 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_wbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661 } 662 663 int 664 SSL_set_fd(SSL *s, int fd) 665 { 666 int ret = 0; 667 BIO *bio = NULL; 668 669 bio = BIO_new(BIO_s_socket()); 670 671 if (bio == NULL) { 672 SSLerror(s, ERR_R_BUF_LIB); 673 goto err; 674 } 675 BIO_set_fd(bio, fd, BIO_NOCLOSE); 676 SSL_set_bio(s, bio, bio); 677 ret = 1; 678 err: 679 return (ret); 680 } 681 682 int 683 SSL_set_wfd(SSL *s, int fd) 684 { 685 int ret = 0; 686 BIO *bio = NULL; 687 688 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 689 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 690 bio = BIO_new(BIO_s_socket()); 691 692 if (bio == NULL) { 693 SSLerror(s, ERR_R_BUF_LIB); 694 goto err; 695 } 696 BIO_set_fd(bio, fd, BIO_NOCLOSE); 697 SSL_set_bio(s, SSL_get_rbio(s), bio); 698 } else 699 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 700 ret = 1; 701 err: 702 return (ret); 703 } 704 705 int 706 SSL_set_rfd(SSL *s, int fd) 707 { 708 int ret = 0; 709 BIO *bio = NULL; 710 711 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 712 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 713 bio = BIO_new(BIO_s_socket()); 714 715 if (bio == NULL) { 716 SSLerror(s, ERR_R_BUF_LIB); 717 goto err; 718 } 719 BIO_set_fd(bio, fd, BIO_NOCLOSE); 720 SSL_set_bio(s, bio, SSL_get_wbio(s)); 721 } else 722 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 723 ret = 1; 724 err: 725 return (ret); 726 } 727 728 729 /* return length of latest Finished message we sent, copy to 'buf' */ 730 size_t 731 SSL_get_finished(const SSL *s, void *buf, size_t count) 732 { 733 size_t ret; 734 735 ret = s->s3->hs.finished_len; 736 if (count > ret) 737 count = ret; 738 memcpy(buf, s->s3->hs.finished, count); 739 return (ret); 740 } 741 742 /* return length of latest Finished message we expected, copy to 'buf' */ 743 size_t 744 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 745 { 746 size_t ret; 747 748 ret = s->s3->hs.peer_finished_len; 749 if (count > ret) 750 count = ret; 751 memcpy(buf, s->s3->hs.peer_finished, count); 752 return (ret); 753 } 754 755 756 int 757 SSL_get_verify_mode(const SSL *s) 758 { 759 return (s->verify_mode); 760 } 761 762 int 763 SSL_get_verify_depth(const SSL *s) 764 { 765 return (X509_VERIFY_PARAM_get_depth(s->param)); 766 } 767 768 int 769 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 770 { 771 return (s->internal->verify_callback); 772 } 773 774 void 775 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 776 { 777 ctx->internal->keylog_callback = cb; 778 } 779 780 SSL_CTX_keylog_cb_func 781 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 782 { 783 return (ctx->internal->keylog_callback); 784 } 785 786 int 787 SSL_set_num_tickets(SSL *s, size_t num_tickets) 788 { 789 s->internal->num_tickets = num_tickets; 790 791 return 1; 792 } 793 794 size_t 795 SSL_get_num_tickets(const SSL *s) 796 { 797 return s->internal->num_tickets; 798 } 799 800 int 801 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 802 { 803 ctx->internal->num_tickets = num_tickets; 804 805 return 1; 806 } 807 808 size_t 809 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 810 { 811 return ctx->internal->num_tickets; 812 } 813 814 int 815 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 816 { 817 return (ctx->verify_mode); 818 } 819 820 int 821 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 822 { 823 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 824 } 825 826 int 827 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 828 { 829 return (ctx->internal->default_verify_callback); 830 } 831 832 void 833 SSL_set_verify(SSL *s, int mode, 834 int (*callback)(int ok, X509_STORE_CTX *ctx)) 835 { 836 s->verify_mode = mode; 837 if (callback != NULL) 838 s->internal->verify_callback = callback; 839 } 840 841 void 842 SSL_set_verify_depth(SSL *s, int depth) 843 { 844 X509_VERIFY_PARAM_set_depth(s->param, depth); 845 } 846 847 void 848 SSL_set_read_ahead(SSL *s, int yes) 849 { 850 s->internal->read_ahead = yes; 851 } 852 853 int 854 SSL_get_read_ahead(const SSL *s) 855 { 856 return (s->internal->read_ahead); 857 } 858 859 int 860 SSL_pending(const SSL *s) 861 { 862 return (s->method->ssl_pending(s)); 863 } 864 865 X509 * 866 SSL_get_peer_certificate(const SSL *s) 867 { 868 X509 *cert; 869 870 if (s == NULL || s->session == NULL) 871 return NULL; 872 873 if ((cert = s->session->peer_cert) == NULL) 874 return NULL; 875 876 X509_up_ref(cert); 877 878 return cert; 879 } 880 881 STACK_OF(X509) * 882 SSL_get_peer_cert_chain(const SSL *s) 883 { 884 if (s == NULL || s->session == NULL) 885 return NULL; 886 887 /* 888 * If we are a client, cert_chain includes the peer's own 889 * certificate; if we are a server, it does not. 890 */ 891 return s->session->cert_chain; 892 } 893 894 STACK_OF(X509) * 895 SSL_get0_verified_chain(const SSL *s) 896 { 897 return s->internal->verified_chain; 898 } 899 900 /* 901 * Now in theory, since the calling process own 't' it should be safe to 902 * modify. We need to be able to read f without being hassled 903 */ 904 int 905 SSL_copy_session_id(SSL *t, const SSL *f) 906 { 907 SSL_CERT *tmp; 908 909 /* Do we need to do SSL locking? */ 910 if (!SSL_set_session(t, SSL_get_session(f))) 911 return 0; 912 913 /* What if we are set up for one protocol but want to talk another? */ 914 if (t->method != f->method) { 915 t->method->ssl_free(t); 916 t->method = f->method; 917 if (!t->method->ssl_new(t)) 918 return 0; 919 } 920 921 tmp = t->cert; 922 if (f->cert != NULL) { 923 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 924 t->cert = f->cert; 925 } else 926 t->cert = NULL; 927 ssl_cert_free(tmp); 928 929 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 930 return 0; 931 932 return 1; 933 } 934 935 /* Fix this so it checks all the valid key/cert options */ 936 int 937 SSL_CTX_check_private_key(const SSL_CTX *ctx) 938 { 939 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 940 (ctx->internal->cert->key->x509 == NULL)) { 941 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 942 return (0); 943 } 944 if (ctx->internal->cert->key->privatekey == NULL) { 945 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 946 return (0); 947 } 948 return (X509_check_private_key(ctx->internal->cert->key->x509, 949 ctx->internal->cert->key->privatekey)); 950 } 951 952 /* Fix this function so that it takes an optional type parameter */ 953 int 954 SSL_check_private_key(const SSL *ssl) 955 { 956 if (ssl == NULL) { 957 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 958 return (0); 959 } 960 if (ssl->cert == NULL) { 961 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 962 return (0); 963 } 964 if (ssl->cert->key->x509 == NULL) { 965 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 966 return (0); 967 } 968 if (ssl->cert->key->privatekey == NULL) { 969 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 970 return (0); 971 } 972 return (X509_check_private_key(ssl->cert->key->x509, 973 ssl->cert->key->privatekey)); 974 } 975 976 int 977 SSL_accept(SSL *s) 978 { 979 if (s->internal->handshake_func == NULL) 980 SSL_set_accept_state(s); /* Not properly initialized yet */ 981 982 return (s->method->ssl_accept(s)); 983 } 984 985 int 986 SSL_connect(SSL *s) 987 { 988 if (s->internal->handshake_func == NULL) 989 SSL_set_connect_state(s); /* Not properly initialized yet */ 990 991 return (s->method->ssl_connect(s)); 992 } 993 994 int 995 SSL_is_dtls(const SSL *s) 996 { 997 return s->method->dtls; 998 } 999 1000 int 1001 SSL_is_server(const SSL *s) 1002 { 1003 return s->server; 1004 } 1005 1006 static long 1007 ssl_get_default_timeout() 1008 { 1009 /* 1010 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1011 * is way too long for http, the cache would over fill. 1012 */ 1013 return (2 * 60 * 60); 1014 } 1015 1016 long 1017 SSL_get_default_timeout(const SSL *s) 1018 { 1019 return (ssl_get_default_timeout()); 1020 } 1021 1022 int 1023 SSL_read(SSL *s, void *buf, int num) 1024 { 1025 if (num < 0) { 1026 SSLerror(s, SSL_R_BAD_LENGTH); 1027 return -1; 1028 } 1029 1030 if (s->internal->handshake_func == NULL) { 1031 SSLerror(s, SSL_R_UNINITIALIZED); 1032 return (-1); 1033 } 1034 1035 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1036 s->internal->rwstate = SSL_NOTHING; 1037 return (0); 1038 } 1039 return ssl3_read(s, buf, num); 1040 } 1041 1042 int 1043 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1044 { 1045 int ret; 1046 1047 /* We simply don't bother supporting enormous reads */ 1048 if (num > INT_MAX) { 1049 SSLerror(s, SSL_R_BAD_LENGTH); 1050 return 0; 1051 } 1052 1053 ret = SSL_read(s, buf, (int)num); 1054 if (ret < 0) 1055 ret = 0; 1056 *bytes_read = ret; 1057 1058 return ret > 0; 1059 } 1060 1061 int 1062 SSL_peek(SSL *s, void *buf, int num) 1063 { 1064 if (num < 0) { 1065 SSLerror(s, SSL_R_BAD_LENGTH); 1066 return -1; 1067 } 1068 1069 if (s->internal->handshake_func == NULL) { 1070 SSLerror(s, SSL_R_UNINITIALIZED); 1071 return (-1); 1072 } 1073 1074 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1075 return (0); 1076 } 1077 return ssl3_peek(s, buf, num); 1078 } 1079 1080 int 1081 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1082 { 1083 int ret; 1084 1085 /* We simply don't bother supporting enormous peeks */ 1086 if (num > INT_MAX) { 1087 SSLerror(s, SSL_R_BAD_LENGTH); 1088 return 0; 1089 } 1090 1091 ret = SSL_peek(s, buf, (int)num); 1092 if (ret < 0) 1093 ret = 0; 1094 *bytes_peeked = ret; 1095 1096 return ret > 0; 1097 } 1098 1099 int 1100 SSL_write(SSL *s, const void *buf, int num) 1101 { 1102 if (num < 0) { 1103 SSLerror(s, SSL_R_BAD_LENGTH); 1104 return -1; 1105 } 1106 1107 if (s->internal->handshake_func == NULL) { 1108 SSLerror(s, SSL_R_UNINITIALIZED); 1109 return (-1); 1110 } 1111 1112 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1113 s->internal->rwstate = SSL_NOTHING; 1114 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1115 return (-1); 1116 } 1117 return ssl3_write(s, buf, num); 1118 } 1119 1120 int 1121 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1122 { 1123 int ret; 1124 1125 /* We simply don't bother supporting enormous writes */ 1126 if (num > INT_MAX) { 1127 SSLerror(s, SSL_R_BAD_LENGTH); 1128 return 0; 1129 } 1130 1131 if (num == 0) { 1132 /* This API is special */ 1133 bytes_written = 0; 1134 return 1; 1135 } 1136 1137 ret = SSL_write(s, buf, (int)num); 1138 if (ret < 0) 1139 ret = 0; 1140 *bytes_written = ret; 1141 1142 return ret > 0; 1143 } 1144 1145 uint32_t 1146 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1147 { 1148 return 0; 1149 } 1150 1151 int 1152 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1153 { 1154 return 1; 1155 } 1156 1157 uint32_t 1158 SSL_get_max_early_data(const SSL *s) 1159 { 1160 return 0; 1161 } 1162 1163 int 1164 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1165 { 1166 return 1; 1167 } 1168 1169 int 1170 SSL_get_early_data_status(const SSL *s) 1171 { 1172 return SSL_EARLY_DATA_REJECTED; 1173 } 1174 1175 int 1176 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1177 { 1178 *readbytes = 0; 1179 1180 if (!s->server) { 1181 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1182 return SSL_READ_EARLY_DATA_ERROR; 1183 } 1184 1185 return SSL_READ_EARLY_DATA_FINISH; 1186 } 1187 1188 int 1189 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1190 { 1191 *written = 0; 1192 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1193 return 0; 1194 } 1195 1196 int 1197 SSL_shutdown(SSL *s) 1198 { 1199 /* 1200 * Note that this function behaves differently from what one might 1201 * expect. Return values are 0 for no success (yet), 1202 * 1 for success; but calling it once is usually not enough, 1203 * even if blocking I/O is used (see ssl3_shutdown). 1204 */ 1205 1206 if (s->internal->handshake_func == NULL) { 1207 SSLerror(s, SSL_R_UNINITIALIZED); 1208 return (-1); 1209 } 1210 1211 if (s != NULL && !SSL_in_init(s)) 1212 return (s->method->ssl_shutdown(s)); 1213 1214 return (1); 1215 } 1216 1217 int 1218 SSL_renegotiate(SSL *s) 1219 { 1220 if (s->internal->renegotiate == 0) 1221 s->internal->renegotiate = 1; 1222 1223 s->internal->new_session = 1; 1224 1225 return (s->method->ssl_renegotiate(s)); 1226 } 1227 1228 int 1229 SSL_renegotiate_abbreviated(SSL *s) 1230 { 1231 if (s->internal->renegotiate == 0) 1232 s->internal->renegotiate = 1; 1233 1234 s->internal->new_session = 0; 1235 1236 return (s->method->ssl_renegotiate(s)); 1237 } 1238 1239 int 1240 SSL_renegotiate_pending(SSL *s) 1241 { 1242 /* 1243 * Becomes true when negotiation is requested; 1244 * false again once a handshake has finished. 1245 */ 1246 return (s->internal->renegotiate != 0); 1247 } 1248 1249 long 1250 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1251 { 1252 long l; 1253 1254 switch (cmd) { 1255 case SSL_CTRL_GET_READ_AHEAD: 1256 return (s->internal->read_ahead); 1257 case SSL_CTRL_SET_READ_AHEAD: 1258 l = s->internal->read_ahead; 1259 s->internal->read_ahead = larg; 1260 return (l); 1261 1262 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1263 s->internal->msg_callback_arg = parg; 1264 return (1); 1265 1266 case SSL_CTRL_OPTIONS: 1267 return (s->internal->options|=larg); 1268 case SSL_CTRL_CLEAR_OPTIONS: 1269 return (s->internal->options&=~larg); 1270 case SSL_CTRL_MODE: 1271 return (s->internal->mode|=larg); 1272 case SSL_CTRL_CLEAR_MODE: 1273 return (s->internal->mode &=~larg); 1274 case SSL_CTRL_GET_MAX_CERT_LIST: 1275 return (s->internal->max_cert_list); 1276 case SSL_CTRL_SET_MAX_CERT_LIST: 1277 l = s->internal->max_cert_list; 1278 s->internal->max_cert_list = larg; 1279 return (l); 1280 case SSL_CTRL_SET_MTU: 1281 #ifndef OPENSSL_NO_DTLS1 1282 if (larg < (long)dtls1_min_mtu()) 1283 return (0); 1284 #endif 1285 if (SSL_is_dtls(s)) { 1286 s->d1->mtu = larg; 1287 return (larg); 1288 } 1289 return (0); 1290 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1291 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1292 return (0); 1293 s->max_send_fragment = larg; 1294 return (1); 1295 case SSL_CTRL_GET_RI_SUPPORT: 1296 if (s->s3) 1297 return (s->s3->send_connection_binding); 1298 else return (0); 1299 default: 1300 if (SSL_is_dtls(s)) 1301 return dtls1_ctrl(s, cmd, larg, parg); 1302 return ssl3_ctrl(s, cmd, larg, parg); 1303 } 1304 } 1305 1306 long 1307 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1308 { 1309 switch (cmd) { 1310 case SSL_CTRL_SET_MSG_CALLBACK: 1311 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1312 return (1); 1313 1314 default: 1315 return (ssl3_callback_ctrl(s, cmd, fp)); 1316 } 1317 } 1318 1319 struct lhash_st_SSL_SESSION * 1320 SSL_CTX_sessions(SSL_CTX *ctx) 1321 { 1322 return (ctx->internal->sessions); 1323 } 1324 1325 long 1326 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1327 { 1328 long l; 1329 1330 switch (cmd) { 1331 case SSL_CTRL_GET_READ_AHEAD: 1332 return (ctx->internal->read_ahead); 1333 case SSL_CTRL_SET_READ_AHEAD: 1334 l = ctx->internal->read_ahead; 1335 ctx->internal->read_ahead = larg; 1336 return (l); 1337 1338 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1339 ctx->internal->msg_callback_arg = parg; 1340 return (1); 1341 1342 case SSL_CTRL_GET_MAX_CERT_LIST: 1343 return (ctx->internal->max_cert_list); 1344 case SSL_CTRL_SET_MAX_CERT_LIST: 1345 l = ctx->internal->max_cert_list; 1346 ctx->internal->max_cert_list = larg; 1347 return (l); 1348 1349 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1350 l = ctx->internal->session_cache_size; 1351 ctx->internal->session_cache_size = larg; 1352 return (l); 1353 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1354 return (ctx->internal->session_cache_size); 1355 case SSL_CTRL_SET_SESS_CACHE_MODE: 1356 l = ctx->internal->session_cache_mode; 1357 ctx->internal->session_cache_mode = larg; 1358 return (l); 1359 case SSL_CTRL_GET_SESS_CACHE_MODE: 1360 return (ctx->internal->session_cache_mode); 1361 1362 case SSL_CTRL_SESS_NUMBER: 1363 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1364 case SSL_CTRL_SESS_CONNECT: 1365 return (ctx->internal->stats.sess_connect); 1366 case SSL_CTRL_SESS_CONNECT_GOOD: 1367 return (ctx->internal->stats.sess_connect_good); 1368 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1369 return (ctx->internal->stats.sess_connect_renegotiate); 1370 case SSL_CTRL_SESS_ACCEPT: 1371 return (ctx->internal->stats.sess_accept); 1372 case SSL_CTRL_SESS_ACCEPT_GOOD: 1373 return (ctx->internal->stats.sess_accept_good); 1374 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1375 return (ctx->internal->stats.sess_accept_renegotiate); 1376 case SSL_CTRL_SESS_HIT: 1377 return (ctx->internal->stats.sess_hit); 1378 case SSL_CTRL_SESS_CB_HIT: 1379 return (ctx->internal->stats.sess_cb_hit); 1380 case SSL_CTRL_SESS_MISSES: 1381 return (ctx->internal->stats.sess_miss); 1382 case SSL_CTRL_SESS_TIMEOUTS: 1383 return (ctx->internal->stats.sess_timeout); 1384 case SSL_CTRL_SESS_CACHE_FULL: 1385 return (ctx->internal->stats.sess_cache_full); 1386 case SSL_CTRL_OPTIONS: 1387 return (ctx->internal->options|=larg); 1388 case SSL_CTRL_CLEAR_OPTIONS: 1389 return (ctx->internal->options&=~larg); 1390 case SSL_CTRL_MODE: 1391 return (ctx->internal->mode|=larg); 1392 case SSL_CTRL_CLEAR_MODE: 1393 return (ctx->internal->mode&=~larg); 1394 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1395 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1396 return (0); 1397 ctx->internal->max_send_fragment = larg; 1398 return (1); 1399 default: 1400 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1401 } 1402 } 1403 1404 long 1405 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1406 { 1407 switch (cmd) { 1408 case SSL_CTRL_SET_MSG_CALLBACK: 1409 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1410 return (1); 1411 1412 default: 1413 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1414 } 1415 } 1416 1417 int 1418 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1419 { 1420 long l; 1421 1422 l = a->id - b->id; 1423 if (l == 0L) 1424 return (0); 1425 else 1426 return ((l > 0) ? 1:-1); 1427 } 1428 1429 STACK_OF(SSL_CIPHER) * 1430 SSL_get_ciphers(const SSL *s) 1431 { 1432 if (s == NULL) 1433 return (NULL); 1434 if (s->cipher_list != NULL) 1435 return (s->cipher_list); 1436 1437 return (s->ctx->cipher_list); 1438 } 1439 1440 STACK_OF(SSL_CIPHER) * 1441 SSL_get_client_ciphers(const SSL *s) 1442 { 1443 if (s == NULL || s->session == NULL || !s->server) 1444 return NULL; 1445 return s->session->ciphers; 1446 } 1447 1448 STACK_OF(SSL_CIPHER) * 1449 SSL_get1_supported_ciphers(SSL *s) 1450 { 1451 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1452 const SSL_CIPHER *cipher; 1453 uint16_t min_vers, max_vers; 1454 int i; 1455 1456 if (s == NULL) 1457 return NULL; 1458 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1459 return NULL; 1460 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1461 return NULL; 1462 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1463 return NULL; 1464 1465 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1466 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1467 goto err; 1468 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1469 max_vers)) 1470 continue; 1471 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1472 goto err; 1473 } 1474 1475 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1476 return supported_ciphers; 1477 1478 err: 1479 sk_SSL_CIPHER_free(supported_ciphers); 1480 return NULL; 1481 } 1482 1483 /* See if we have any ECC cipher suites. */ 1484 int 1485 ssl_has_ecc_ciphers(SSL *s) 1486 { 1487 STACK_OF(SSL_CIPHER) *ciphers; 1488 unsigned long alg_k, alg_a; 1489 SSL_CIPHER *cipher; 1490 int i; 1491 1492 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1493 return 0; 1494 1495 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1496 cipher = sk_SSL_CIPHER_value(ciphers, i); 1497 1498 alg_k = cipher->algorithm_mkey; 1499 alg_a = cipher->algorithm_auth; 1500 1501 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1502 return 1; 1503 } 1504 1505 return 0; 1506 } 1507 1508 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1509 const char * 1510 SSL_get_cipher_list(const SSL *s, int n) 1511 { 1512 STACK_OF(SSL_CIPHER) *ciphers; 1513 const SSL_CIPHER *cipher; 1514 1515 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1516 return (NULL); 1517 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1518 return (NULL); 1519 1520 return (cipher->name); 1521 } 1522 1523 STACK_OF(SSL_CIPHER) * 1524 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1525 { 1526 if (ctx == NULL) 1527 return NULL; 1528 return ctx->cipher_list; 1529 } 1530 1531 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1532 int 1533 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1534 { 1535 STACK_OF(SSL_CIPHER) *ciphers; 1536 1537 /* 1538 * ssl_create_cipher_list may return an empty stack if it was unable to 1539 * find a cipher matching the given rule string (for example if the 1540 * rule string specifies a cipher which has been disabled). This is not 1541 * an error as far as ssl_create_cipher_list is concerned, and hence 1542 * ctx->cipher_list has been updated. 1543 */ 1544 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1545 ctx->internal->cipher_list_tls13, str); 1546 if (ciphers == NULL) { 1547 return (0); 1548 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1549 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1550 return (0); 1551 } 1552 return (1); 1553 } 1554 1555 int 1556 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1557 { 1558 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1559 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1560 return 0; 1561 } 1562 if (!ssl_merge_cipherlists(ctx->cipher_list, 1563 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1564 return 0; 1565 1566 return 1; 1567 } 1568 1569 /* Specify the ciphers to be used by the SSL. */ 1570 int 1571 SSL_set_cipher_list(SSL *s, const char *str) 1572 { 1573 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1574 1575 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1576 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1577 1578 /* See comment in SSL_CTX_set_cipher_list. */ 1579 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1580 ciphers_tls13, str); 1581 if (ciphers == NULL) { 1582 return (0); 1583 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1584 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1585 return (0); 1586 } 1587 return (1); 1588 } 1589 1590 int 1591 SSL_set_ciphersuites(SSL *s, const char *str) 1592 { 1593 STACK_OF(SSL_CIPHER) *ciphers; 1594 1595 if ((ciphers = s->cipher_list) == NULL) 1596 ciphers = s->ctx->cipher_list; 1597 1598 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1599 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1600 return (0); 1601 } 1602 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1603 &s->cipher_list)) 1604 return 0; 1605 1606 return 1; 1607 } 1608 1609 char * 1610 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1611 { 1612 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1613 const SSL_CIPHER *cipher; 1614 size_t curlen = 0; 1615 char *end; 1616 int i; 1617 1618 if (!s->server || s->session == NULL || len < 2) 1619 return NULL; 1620 1621 if ((client_ciphers = s->session->ciphers) == NULL) 1622 return NULL; 1623 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1624 return NULL; 1625 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1626 sk_SSL_CIPHER_num(server_ciphers) == 0) 1627 return NULL; 1628 1629 buf[0] = '\0'; 1630 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1631 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1632 1633 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1634 continue; 1635 1636 end = buf + curlen; 1637 if (strlcat(buf, cipher->name, len) >= len || 1638 (curlen = strlcat(buf, ":", len)) >= len) { 1639 /* remove truncated cipher from list */ 1640 *end = '\0'; 1641 break; 1642 } 1643 } 1644 /* remove trailing colon */ 1645 if ((end = strrchr(buf, ':')) != NULL) 1646 *end = '\0'; 1647 return buf; 1648 } 1649 1650 /* 1651 * Return a servername extension value if provided in Client Hello, or NULL. 1652 * So far, only host_name types are defined (RFC 3546). 1653 */ 1654 const char * 1655 SSL_get_servername(const SSL *s, const int type) 1656 { 1657 if (type != TLSEXT_NAMETYPE_host_name) 1658 return (NULL); 1659 1660 return (s->session && !s->tlsext_hostname ? 1661 s->session->tlsext_hostname : 1662 s->tlsext_hostname); 1663 } 1664 1665 int 1666 SSL_get_servername_type(const SSL *s) 1667 { 1668 if (s->session && 1669 (!s->tlsext_hostname ? 1670 s->session->tlsext_hostname : s->tlsext_hostname)) 1671 return (TLSEXT_NAMETYPE_host_name); 1672 return (-1); 1673 } 1674 1675 /* 1676 * SSL_select_next_proto implements standard protocol selection. It is 1677 * expected that this function is called from the callback set by 1678 * SSL_CTX_set_alpn_select_cb. 1679 * 1680 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1681 * strings. The length byte itself is not included in the length. A byte 1682 * string of length 0 is invalid. No byte string may be truncated. 1683 * 1684 * It returns either: 1685 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1686 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1687 */ 1688 int 1689 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1690 const unsigned char *server, unsigned int server_len, 1691 const unsigned char *client, unsigned int client_len) 1692 { 1693 unsigned int i, j; 1694 const unsigned char *result; 1695 int status = OPENSSL_NPN_UNSUPPORTED; 1696 1697 /* 1698 * For each protocol in server preference order, 1699 * see if we support it. 1700 */ 1701 for (i = 0; i < server_len; ) { 1702 for (j = 0; j < client_len; ) { 1703 if (server[i] == client[j] && 1704 memcmp(&server[i + 1], 1705 &client[j + 1], server[i]) == 0) { 1706 /* We found a match */ 1707 result = &server[i]; 1708 status = OPENSSL_NPN_NEGOTIATED; 1709 goto found; 1710 } 1711 j += client[j]; 1712 j++; 1713 } 1714 i += server[i]; 1715 i++; 1716 } 1717 1718 /* There's no overlap between our protocols and the server's list. */ 1719 result = client; 1720 status = OPENSSL_NPN_NO_OVERLAP; 1721 1722 found: 1723 *out = (unsigned char *) result + 1; 1724 *outlen = result[0]; 1725 return (status); 1726 } 1727 1728 /* SSL_get0_next_proto_negotiated is deprecated. */ 1729 void 1730 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1731 unsigned int *len) 1732 { 1733 *data = NULL; 1734 *len = 0; 1735 } 1736 1737 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1738 void 1739 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1740 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1741 { 1742 } 1743 1744 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1745 void 1746 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1747 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1748 unsigned int inlen, void *arg), void *arg) 1749 { 1750 } 1751 1752 /* 1753 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1754 * protocols, which must be in wire-format (i.e. a series of non-empty, 1755 * 8-bit length-prefixed strings). Returns 0 on success. 1756 */ 1757 int 1758 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1759 unsigned int protos_len) 1760 { 1761 int failed = 1; 1762 1763 if (protos == NULL || protos_len == 0) 1764 goto err; 1765 1766 free(ctx->internal->alpn_client_proto_list); 1767 ctx->internal->alpn_client_proto_list = NULL; 1768 ctx->internal->alpn_client_proto_list_len = 0; 1769 1770 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1771 == NULL) 1772 goto err; 1773 ctx->internal->alpn_client_proto_list_len = protos_len; 1774 1775 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1776 1777 failed = 0; 1778 1779 err: 1780 /* NOTE: Return values are the reverse of what you expect. */ 1781 return (failed); 1782 } 1783 1784 /* 1785 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1786 * protocols, which must be in wire-format (i.e. a series of non-empty, 1787 * 8-bit length-prefixed strings). Returns 0 on success. 1788 */ 1789 int 1790 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1791 unsigned int protos_len) 1792 { 1793 int failed = 1; 1794 1795 if (protos == NULL || protos_len == 0) 1796 goto err; 1797 1798 free(ssl->internal->alpn_client_proto_list); 1799 ssl->internal->alpn_client_proto_list = NULL; 1800 ssl->internal->alpn_client_proto_list_len = 0; 1801 1802 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1803 == NULL) 1804 goto err; 1805 ssl->internal->alpn_client_proto_list_len = protos_len; 1806 1807 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1808 1809 failed = 0; 1810 1811 err: 1812 /* NOTE: Return values are the reverse of what you expect. */ 1813 return (failed); 1814 } 1815 1816 /* 1817 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1818 * ClientHello processing in order to select an ALPN protocol from the 1819 * client's list of offered protocols. 1820 */ 1821 void 1822 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1823 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1824 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1825 { 1826 ctx->internal->alpn_select_cb = cb; 1827 ctx->internal->alpn_select_cb_arg = arg; 1828 } 1829 1830 /* 1831 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1832 * it sets data to point to len bytes of protocol name (not including the 1833 * leading length-prefix byte). If the server didn't respond with* a negotiated 1834 * protocol then len will be zero. 1835 */ 1836 void 1837 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1838 unsigned int *len) 1839 { 1840 *data = ssl->s3->alpn_selected; 1841 *len = ssl->s3->alpn_selected_len; 1842 } 1843 1844 void 1845 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1846 { 1847 return; 1848 } 1849 1850 int 1851 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1852 const char *label, size_t llen, const unsigned char *p, size_t plen, 1853 int use_context) 1854 { 1855 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1856 if (!use_context) { 1857 p = NULL; 1858 plen = 0; 1859 } 1860 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1861 out, olen); 1862 } 1863 1864 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1865 use_context)); 1866 } 1867 1868 static unsigned long 1869 ssl_session_hash(const SSL_SESSION *a) 1870 { 1871 unsigned long l; 1872 1873 l = (unsigned long) 1874 ((unsigned int) a->session_id[0] )| 1875 ((unsigned int) a->session_id[1]<< 8L)| 1876 ((unsigned long)a->session_id[2]<<16L)| 1877 ((unsigned long)a->session_id[3]<<24L); 1878 return (l); 1879 } 1880 1881 /* 1882 * NB: If this function (or indeed the hash function which uses a sort of 1883 * coarser function than this one) is changed, ensure 1884 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1885 * able to construct an SSL_SESSION that will collide with any existing session 1886 * with a matching session ID. 1887 */ 1888 static int 1889 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1890 { 1891 if (a->ssl_version != b->ssl_version) 1892 return (1); 1893 if (a->session_id_length != b->session_id_length) 1894 return (1); 1895 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1896 return (1); 1897 return (0); 1898 } 1899 1900 /* 1901 * These wrapper functions should remain rather than redeclaring 1902 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1903 * variable. The reason is that the functions aren't static, they're exposed via 1904 * ssl.h. 1905 */ 1906 static unsigned long 1907 ssl_session_LHASH_HASH(const void *arg) 1908 { 1909 const SSL_SESSION *a = arg; 1910 1911 return ssl_session_hash(a); 1912 } 1913 1914 static int 1915 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1916 { 1917 const SSL_SESSION *a = arg1; 1918 const SSL_SESSION *b = arg2; 1919 1920 return ssl_session_cmp(a, b); 1921 } 1922 1923 SSL_CTX * 1924 SSL_CTX_new(const SSL_METHOD *meth) 1925 { 1926 SSL_CTX *ret; 1927 1928 if (!OPENSSL_init_ssl(0, NULL)) { 1929 SSLerrorx(SSL_R_LIBRARY_BUG); 1930 return (NULL); 1931 } 1932 1933 if (meth == NULL) { 1934 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1935 return (NULL); 1936 } 1937 1938 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1939 SSLerrorx(ERR_R_MALLOC_FAILURE); 1940 return (NULL); 1941 } 1942 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1943 free(ret); 1944 SSLerrorx(ERR_R_MALLOC_FAILURE); 1945 return (NULL); 1946 } 1947 1948 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1949 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1950 goto err; 1951 } 1952 1953 ret->method = meth; 1954 ret->internal->min_tls_version = meth->min_tls_version; 1955 ret->internal->max_tls_version = meth->max_tls_version; 1956 ret->internal->min_proto_version = 0; 1957 ret->internal->max_proto_version = 0; 1958 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1959 1960 ret->cert_store = NULL; 1961 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1962 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1963 ret->internal->session_cache_head = NULL; 1964 ret->internal->session_cache_tail = NULL; 1965 1966 /* We take the system default */ 1967 ret->session_timeout = ssl_get_default_timeout(); 1968 1969 ret->internal->new_session_cb = 0; 1970 ret->internal->remove_session_cb = 0; 1971 ret->internal->get_session_cb = 0; 1972 ret->internal->generate_session_id = 0; 1973 1974 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1975 1976 ret->references = 1; 1977 ret->internal->quiet_shutdown = 0; 1978 1979 ret->internal->info_callback = NULL; 1980 1981 ret->internal->app_verify_callback = 0; 1982 ret->internal->app_verify_arg = NULL; 1983 1984 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1985 ret->internal->read_ahead = 0; 1986 ret->internal->msg_callback = 0; 1987 ret->internal->msg_callback_arg = NULL; 1988 ret->verify_mode = SSL_VERIFY_NONE; 1989 ret->sid_ctx_length = 0; 1990 ret->internal->default_verify_callback = NULL; 1991 1992 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1993 goto err; 1994 1995 ret->default_passwd_callback = 0; 1996 ret->default_passwd_callback_userdata = NULL; 1997 ret->internal->client_cert_cb = 0; 1998 ret->internal->app_gen_cookie_cb = 0; 1999 ret->internal->app_verify_cookie_cb = 0; 2000 2001 ret->internal->sessions = lh_SSL_SESSION_new(); 2002 if (ret->internal->sessions == NULL) 2003 goto err; 2004 ret->cert_store = X509_STORE_new(); 2005 if (ret->cert_store == NULL) 2006 goto err; 2007 2008 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2009 NULL, SSL_DEFAULT_CIPHER_LIST); 2010 if (ret->cipher_list == NULL || 2011 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2012 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2013 goto err2; 2014 } 2015 2016 ret->param = X509_VERIFY_PARAM_new(); 2017 if (!ret->param) 2018 goto err; 2019 2020 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2021 goto err; 2022 2023 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2024 2025 ret->extra_certs = NULL; 2026 2027 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2028 2029 ret->internal->tlsext_servername_callback = 0; 2030 ret->internal->tlsext_servername_arg = NULL; 2031 2032 /* Setup RFC4507 ticket keys */ 2033 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2034 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2035 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2036 2037 ret->internal->tlsext_status_cb = 0; 2038 ret->internal->tlsext_status_arg = NULL; 2039 2040 #ifndef OPENSSL_NO_ENGINE 2041 ret->internal->client_cert_engine = NULL; 2042 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2043 #define eng_strx(x) #x 2044 #define eng_str(x) eng_strx(x) 2045 /* Use specific client engine automatically... ignore errors */ 2046 { 2047 ENGINE *eng; 2048 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2049 if (!eng) { 2050 ERR_clear_error(); 2051 ENGINE_load_builtin_engines(); 2052 eng = ENGINE_by_id(eng_str( 2053 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2054 } 2055 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2056 ERR_clear_error(); 2057 } 2058 #endif 2059 #endif 2060 /* 2061 * Default is to connect to non-RI servers. When RI is more widely 2062 * deployed might change this. 2063 */ 2064 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2065 2066 return (ret); 2067 err: 2068 SSLerrorx(ERR_R_MALLOC_FAILURE); 2069 err2: 2070 SSL_CTX_free(ret); 2071 return (NULL); 2072 } 2073 2074 void 2075 SSL_CTX_free(SSL_CTX *ctx) 2076 { 2077 int i; 2078 2079 if (ctx == NULL) 2080 return; 2081 2082 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2083 if (i > 0) 2084 return; 2085 2086 X509_VERIFY_PARAM_free(ctx->param); 2087 2088 /* 2089 * Free internal session cache. However: the remove_cb() may reference 2090 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2091 * after the sessions were flushed. 2092 * As the ex_data handling routines might also touch the session cache, 2093 * the most secure solution seems to be: empty (flush) the cache, then 2094 * free ex_data, then finally free the cache. 2095 * (See ticket [openssl.org #212].) 2096 */ 2097 if (ctx->internal->sessions != NULL) 2098 SSL_CTX_flush_sessions(ctx, 0); 2099 2100 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2101 2102 lh_SSL_SESSION_free(ctx->internal->sessions); 2103 2104 X509_STORE_free(ctx->cert_store); 2105 sk_SSL_CIPHER_free(ctx->cipher_list); 2106 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2107 ssl_cert_free(ctx->internal->cert); 2108 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2109 sk_X509_pop_free(ctx->extra_certs, X509_free); 2110 2111 #ifndef OPENSSL_NO_SRTP 2112 if (ctx->internal->srtp_profiles) 2113 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2114 #endif 2115 2116 #ifndef OPENSSL_NO_ENGINE 2117 ENGINE_finish(ctx->internal->client_cert_engine); 2118 #endif 2119 2120 free(ctx->internal->tlsext_ecpointformatlist); 2121 free(ctx->internal->tlsext_supportedgroups); 2122 2123 free(ctx->internal->alpn_client_proto_list); 2124 2125 free(ctx->internal); 2126 free(ctx); 2127 } 2128 2129 int 2130 SSL_CTX_up_ref(SSL_CTX *ctx) 2131 { 2132 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2133 return ((refs > 1) ? 1 : 0); 2134 } 2135 2136 pem_password_cb * 2137 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2138 { 2139 return (ctx->default_passwd_callback); 2140 } 2141 2142 void 2143 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2144 { 2145 ctx->default_passwd_callback = cb; 2146 } 2147 2148 void * 2149 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2150 { 2151 return ctx->default_passwd_callback_userdata; 2152 } 2153 2154 void 2155 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2156 { 2157 ctx->default_passwd_callback_userdata = u; 2158 } 2159 2160 void 2161 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2162 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2163 { 2164 ctx->internal->app_verify_callback = cb; 2165 ctx->internal->app_verify_arg = arg; 2166 } 2167 2168 void 2169 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2170 { 2171 ctx->verify_mode = mode; 2172 ctx->internal->default_verify_callback = cb; 2173 } 2174 2175 void 2176 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2177 { 2178 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2179 } 2180 2181 void 2182 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2183 { 2184 unsigned long mask_a, mask_k; 2185 SSL_CERT_PKEY *cpk; 2186 2187 if (c == NULL) 2188 return; 2189 2190 mask_a = SSL_aNULL | SSL_aTLS1_3; 2191 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2192 2193 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2194 c->dhe_params_auto != 0) 2195 mask_k |= SSL_kDHE; 2196 2197 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2198 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2199 /* Key usage, if present, must allow signing. */ 2200 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2201 mask_a |= SSL_aECDSA; 2202 } 2203 2204 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2205 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2206 mask_k |= SSL_kGOST; 2207 mask_a |= SSL_aGOST01; 2208 } 2209 2210 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2211 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2212 mask_a |= SSL_aRSA; 2213 mask_k |= SSL_kRSA; 2214 } 2215 2216 c->mask_k = mask_k; 2217 c->mask_a = mask_a; 2218 c->valid = 1; 2219 } 2220 2221 /* See if this handshake is using an ECC cipher suite. */ 2222 int 2223 ssl_using_ecc_cipher(SSL *s) 2224 { 2225 unsigned long alg_a, alg_k; 2226 2227 alg_a = s->s3->hs.cipher->algorithm_auth; 2228 alg_k = s->s3->hs.cipher->algorithm_mkey; 2229 2230 return s->session->tlsext_ecpointformatlist != NULL && 2231 s->session->tlsext_ecpointformatlist_length > 0 && 2232 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2233 } 2234 2235 int 2236 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2237 { 2238 const SSL_CIPHER *cs = s->s3->hs.cipher; 2239 unsigned long alg_a; 2240 2241 alg_a = cs->algorithm_auth; 2242 2243 if (alg_a & SSL_aECDSA) { 2244 /* Key usage, if present, must allow signing. */ 2245 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2246 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2247 return (0); 2248 } 2249 } 2250 2251 return (1); 2252 } 2253 2254 SSL_CERT_PKEY * 2255 ssl_get_server_send_pkey(const SSL *s) 2256 { 2257 unsigned long alg_a; 2258 SSL_CERT *c; 2259 int i; 2260 2261 c = s->cert; 2262 ssl_set_cert_masks(c, s->s3->hs.cipher); 2263 2264 alg_a = s->s3->hs.cipher->algorithm_auth; 2265 2266 if (alg_a & SSL_aECDSA) { 2267 i = SSL_PKEY_ECC; 2268 } else if (alg_a & SSL_aRSA) { 2269 i = SSL_PKEY_RSA; 2270 } else if (alg_a & SSL_aGOST01) { 2271 i = SSL_PKEY_GOST01; 2272 } else { /* if (alg_a & SSL_aNULL) */ 2273 SSLerror(s, ERR_R_INTERNAL_ERROR); 2274 return (NULL); 2275 } 2276 2277 return (c->pkeys + i); 2278 } 2279 2280 EVP_PKEY * 2281 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2282 const struct ssl_sigalg **sap) 2283 { 2284 const struct ssl_sigalg *sigalg = NULL; 2285 EVP_PKEY *pkey = NULL; 2286 unsigned long alg_a; 2287 SSL_CERT *c; 2288 int idx = -1; 2289 2290 alg_a = cipher->algorithm_auth; 2291 c = s->cert; 2292 2293 if (alg_a & SSL_aRSA) { 2294 idx = SSL_PKEY_RSA; 2295 } else if ((alg_a & SSL_aECDSA) && 2296 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2297 idx = SSL_PKEY_ECC; 2298 if (idx == -1) { 2299 SSLerror(s, ERR_R_INTERNAL_ERROR); 2300 return (NULL); 2301 } 2302 2303 pkey = c->pkeys[idx].privatekey; 2304 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2305 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2306 return (NULL); 2307 } 2308 *pmd = sigalg->md(); 2309 *sap = sigalg; 2310 2311 return (pkey); 2312 } 2313 2314 size_t 2315 ssl_dhe_params_auto_key_bits(SSL *s) 2316 { 2317 SSL_CERT_PKEY *cpk; 2318 int key_bits; 2319 2320 if (s->cert->dhe_params_auto == 2) { 2321 key_bits = 1024; 2322 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2323 key_bits = 1024; 2324 if (s->s3->hs.cipher->strength_bits == 256) 2325 key_bits = 3072; 2326 } else { 2327 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2328 return 0; 2329 if (cpk->privatekey == NULL || 2330 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2331 return 0; 2332 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2333 return 0; 2334 } 2335 2336 return key_bits; 2337 } 2338 2339 static int 2340 ssl_should_update_external_cache(SSL *s, int mode) 2341 { 2342 int cache_mode; 2343 2344 cache_mode = s->session_ctx->internal->session_cache_mode; 2345 2346 /* Don't cache if mode says not to */ 2347 if ((cache_mode & mode) == 0) 2348 return 0; 2349 2350 /* if it is not already cached, cache it */ 2351 if (!s->internal->hit) 2352 return 1; 2353 2354 /* If it's TLS 1.3, do it to match OpenSSL */ 2355 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2356 return 1; 2357 2358 return 0; 2359 } 2360 2361 static int 2362 ssl_should_update_internal_cache(SSL *s, int mode) 2363 { 2364 int cache_mode; 2365 2366 cache_mode = s->session_ctx->internal->session_cache_mode; 2367 2368 /* Don't cache if mode says not to */ 2369 if ((cache_mode & mode) == 0) 2370 return 0; 2371 2372 /* If it is already cached, don't cache it again */ 2373 if (s->internal->hit) 2374 return 0; 2375 2376 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2377 return 0; 2378 2379 /* If we are lesser than TLS 1.3, Cache it. */ 2380 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2381 return 1; 2382 2383 /* Below this we consider TLS 1.3 or later */ 2384 2385 /* If it's not a server, add it? OpenSSL does this. */ 2386 if (!s->server) 2387 return 1; 2388 2389 /* XXX if we support early data / PSK need to add */ 2390 2391 /* 2392 * If we have the remove session callback, we will want 2393 * to know about this even if it's a stateless ticket 2394 * from 1.3 so we can know when it is removed. 2395 */ 2396 if (s->session_ctx->internal->remove_session_cb != NULL) 2397 return 1; 2398 2399 /* If we have set OP_NO_TICKET, cache it. */ 2400 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2401 return 1; 2402 2403 /* Otherwise do not cache */ 2404 return 0; 2405 } 2406 2407 void 2408 ssl_update_cache(SSL *s, int mode) 2409 { 2410 int cache_mode, do_callback; 2411 2412 if (s->session->session_id_length == 0) 2413 return; 2414 2415 cache_mode = s->session_ctx->internal->session_cache_mode; 2416 do_callback = ssl_should_update_external_cache(s, mode); 2417 2418 if (ssl_should_update_internal_cache(s, mode)) { 2419 /* 2420 * XXX should we fail if the add to the internal cache 2421 * fails? OpenSSL doesn't care.. 2422 */ 2423 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2424 } 2425 2426 /* 2427 * Update the "external cache" by calling the new session 2428 * callback if present, even with TLS 1.3 without early data 2429 * "because some application just want to know about the 2430 * creation of a session and aren't doing a full cache". 2431 * Apparently, if they are doing a full cache, they'll have 2432 * some fun, but we endeavour to give application writers the 2433 * same glorious experience they expect from OpenSSL which 2434 * does it this way. 2435 */ 2436 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2437 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2438 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2439 SSL_SESSION_free(s->session); 2440 } 2441 2442 /* Auto flush every 255 connections. */ 2443 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2444 (cache_mode & mode) != 0) { 2445 int connections; 2446 if (mode & SSL_SESS_CACHE_CLIENT) 2447 connections = s->session_ctx->internal->stats.sess_connect_good; 2448 else 2449 connections = s->session_ctx->internal->stats.sess_accept_good; 2450 if ((connections & 0xff) == 0xff) 2451 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2452 } 2453 } 2454 2455 const SSL_METHOD * 2456 SSL_get_ssl_method(SSL *s) 2457 { 2458 return (s->method); 2459 } 2460 2461 int 2462 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2463 { 2464 int (*handshake_func)(SSL *) = NULL; 2465 int ret = 1; 2466 2467 if (s->method == method) 2468 return (ret); 2469 2470 if (s->internal->handshake_func == s->method->ssl_connect) 2471 handshake_func = method->ssl_connect; 2472 else if (s->internal->handshake_func == s->method->ssl_accept) 2473 handshake_func = method->ssl_accept; 2474 2475 if (s->method->version == method->version) { 2476 s->method = method; 2477 } else { 2478 s->method->ssl_free(s); 2479 s->method = method; 2480 ret = s->method->ssl_new(s); 2481 } 2482 s->internal->handshake_func = handshake_func; 2483 2484 return (ret); 2485 } 2486 2487 int 2488 SSL_get_error(const SSL *s, int i) 2489 { 2490 unsigned long l; 2491 int reason; 2492 BIO *bio; 2493 2494 if (i > 0) 2495 return (SSL_ERROR_NONE); 2496 2497 /* 2498 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2499 * etc, where we do encode the error. 2500 */ 2501 if ((l = ERR_peek_error()) != 0) { 2502 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2503 return (SSL_ERROR_SYSCALL); 2504 else 2505 return (SSL_ERROR_SSL); 2506 } 2507 2508 if (SSL_want_read(s)) { 2509 bio = SSL_get_rbio(s); 2510 if (BIO_should_read(bio)) { 2511 return (SSL_ERROR_WANT_READ); 2512 } else if (BIO_should_write(bio)) { 2513 /* 2514 * This one doesn't make too much sense... We never 2515 * try to write to the rbio, and an application 2516 * program where rbio and wbio are separate couldn't 2517 * even know what it should wait for. However if we 2518 * ever set s->internal->rwstate incorrectly (so that we have 2519 * SSL_want_read(s) instead of SSL_want_write(s)) 2520 * and rbio and wbio *are* the same, this test works 2521 * around that bug; so it might be safer to keep it. 2522 */ 2523 return (SSL_ERROR_WANT_WRITE); 2524 } else if (BIO_should_io_special(bio)) { 2525 reason = BIO_get_retry_reason(bio); 2526 if (reason == BIO_RR_CONNECT) 2527 return (SSL_ERROR_WANT_CONNECT); 2528 else if (reason == BIO_RR_ACCEPT) 2529 return (SSL_ERROR_WANT_ACCEPT); 2530 else 2531 return (SSL_ERROR_SYSCALL); /* unknown */ 2532 } 2533 } 2534 2535 if (SSL_want_write(s)) { 2536 bio = SSL_get_wbio(s); 2537 if (BIO_should_write(bio)) { 2538 return (SSL_ERROR_WANT_WRITE); 2539 } else if (BIO_should_read(bio)) { 2540 /* 2541 * See above (SSL_want_read(s) with 2542 * BIO_should_write(bio)) 2543 */ 2544 return (SSL_ERROR_WANT_READ); 2545 } else if (BIO_should_io_special(bio)) { 2546 reason = BIO_get_retry_reason(bio); 2547 if (reason == BIO_RR_CONNECT) 2548 return (SSL_ERROR_WANT_CONNECT); 2549 else if (reason == BIO_RR_ACCEPT) 2550 return (SSL_ERROR_WANT_ACCEPT); 2551 else 2552 return (SSL_ERROR_SYSCALL); 2553 } 2554 } 2555 2556 if (SSL_want_x509_lookup(s)) 2557 return (SSL_ERROR_WANT_X509_LOOKUP); 2558 2559 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2560 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2561 return (SSL_ERROR_ZERO_RETURN); 2562 2563 return (SSL_ERROR_SYSCALL); 2564 } 2565 2566 int 2567 SSL_do_handshake(SSL *s) 2568 { 2569 if (s->internal->handshake_func == NULL) { 2570 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2571 return (-1); 2572 } 2573 2574 s->method->ssl_renegotiate_check(s); 2575 2576 if (!SSL_in_init(s) && !SSL_in_before(s)) 2577 return 1; 2578 2579 return s->internal->handshake_func(s); 2580 } 2581 2582 /* 2583 * For the next 2 functions, SSL_clear() sets shutdown and so 2584 * one of these calls will reset it 2585 */ 2586 void 2587 SSL_set_accept_state(SSL *s) 2588 { 2589 s->server = 1; 2590 s->internal->shutdown = 0; 2591 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2592 s->internal->handshake_func = s->method->ssl_accept; 2593 ssl_clear_cipher_state(s); 2594 } 2595 2596 void 2597 SSL_set_connect_state(SSL *s) 2598 { 2599 s->server = 0; 2600 s->internal->shutdown = 0; 2601 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2602 s->internal->handshake_func = s->method->ssl_connect; 2603 ssl_clear_cipher_state(s); 2604 } 2605 2606 int 2607 ssl_undefined_function(SSL *s) 2608 { 2609 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2610 return (0); 2611 } 2612 2613 int 2614 ssl_undefined_void_function(void) 2615 { 2616 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2617 return (0); 2618 } 2619 2620 int 2621 ssl_undefined_const_function(const SSL *s) 2622 { 2623 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2624 return (0); 2625 } 2626 2627 const char * 2628 ssl_version_string(int ver) 2629 { 2630 switch (ver) { 2631 case TLS1_VERSION: 2632 return (SSL_TXT_TLSV1); 2633 case TLS1_1_VERSION: 2634 return (SSL_TXT_TLSV1_1); 2635 case TLS1_2_VERSION: 2636 return (SSL_TXT_TLSV1_2); 2637 case TLS1_3_VERSION: 2638 return (SSL_TXT_TLSV1_3); 2639 case DTLS1_VERSION: 2640 return (SSL_TXT_DTLS1); 2641 case DTLS1_2_VERSION: 2642 return (SSL_TXT_DTLS1_2); 2643 default: 2644 return ("unknown"); 2645 } 2646 } 2647 2648 const char * 2649 SSL_get_version(const SSL *s) 2650 { 2651 return ssl_version_string(s->version); 2652 } 2653 2654 SSL * 2655 SSL_dup(SSL *s) 2656 { 2657 STACK_OF(X509_NAME) *sk; 2658 X509_NAME *xn; 2659 SSL *ret; 2660 int i; 2661 2662 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2663 goto err; 2664 2665 ret->version = s->version; 2666 ret->method = s->method; 2667 2668 if (s->session != NULL) { 2669 if (!SSL_copy_session_id(ret, s)) 2670 goto err; 2671 } else { 2672 /* 2673 * No session has been established yet, so we have to expect 2674 * that s->cert or ret->cert will be changed later -- 2675 * they should not both point to the same object, 2676 * and thus we can't use SSL_copy_session_id. 2677 */ 2678 2679 ret->method->ssl_free(ret); 2680 ret->method = s->method; 2681 ret->method->ssl_new(ret); 2682 2683 ssl_cert_free(ret->cert); 2684 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2685 goto err; 2686 2687 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2688 s->sid_ctx_length)) 2689 goto err; 2690 } 2691 2692 ret->internal->options = s->internal->options; 2693 ret->internal->mode = s->internal->mode; 2694 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2695 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2696 ret->internal->msg_callback = s->internal->msg_callback; 2697 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2698 SSL_set_verify(ret, SSL_get_verify_mode(s), 2699 SSL_get_verify_callback(s)); 2700 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2701 ret->internal->generate_session_id = s->internal->generate_session_id; 2702 2703 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2704 2705 ret->internal->debug = s->internal->debug; 2706 2707 /* copy app data, a little dangerous perhaps */ 2708 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2709 &ret->internal->ex_data, &s->internal->ex_data)) 2710 goto err; 2711 2712 /* setup rbio, and wbio */ 2713 if (s->rbio != NULL) { 2714 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2715 goto err; 2716 } 2717 if (s->wbio != NULL) { 2718 if (s->wbio != s->rbio) { 2719 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2720 goto err; 2721 } else 2722 ret->wbio = ret->rbio; 2723 } 2724 ret->internal->rwstate = s->internal->rwstate; 2725 ret->internal->in_handshake = s->internal->in_handshake; 2726 ret->internal->handshake_func = s->internal->handshake_func; 2727 ret->server = s->server; 2728 ret->internal->renegotiate = s->internal->renegotiate; 2729 ret->internal->new_session = s->internal->new_session; 2730 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2731 ret->internal->shutdown = s->internal->shutdown; 2732 /* SSL_dup does not really work at any state, though */ 2733 ret->s3->hs.state = s->s3->hs.state; 2734 ret->internal->rstate = s->internal->rstate; 2735 2736 /* 2737 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2738 * ret->init_off 2739 */ 2740 ret->internal->init_num = 0; 2741 2742 ret->internal->hit = s->internal->hit; 2743 2744 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2745 2746 if (s->cipher_list != NULL) { 2747 if ((ret->cipher_list = 2748 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2749 goto err; 2750 } 2751 if (s->internal->cipher_list_tls13 != NULL) { 2752 if ((ret->internal->cipher_list_tls13 = 2753 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2754 goto err; 2755 } 2756 2757 /* Dup the client_CA list */ 2758 if (s->internal->client_CA != NULL) { 2759 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2760 ret->internal->client_CA = sk; 2761 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2762 xn = sk_X509_NAME_value(sk, i); 2763 if (sk_X509_NAME_set(sk, i, 2764 X509_NAME_dup(xn)) == NULL) { 2765 X509_NAME_free(xn); 2766 goto err; 2767 } 2768 } 2769 } 2770 2771 return ret; 2772 err: 2773 SSL_free(ret); 2774 return NULL; 2775 } 2776 2777 void 2778 ssl_clear_cipher_state(SSL *s) 2779 { 2780 tls12_record_layer_clear_read_state(s->internal->rl); 2781 tls12_record_layer_clear_write_state(s->internal->rl); 2782 } 2783 2784 void 2785 ssl_info_callback(const SSL *s, int type, int value) 2786 { 2787 ssl_info_callback_fn *cb; 2788 2789 if ((cb = s->internal->info_callback) == NULL) 2790 cb = s->ctx->internal->info_callback; 2791 if (cb != NULL) 2792 cb(s, type, value); 2793 } 2794 2795 void 2796 ssl_msg_callback(SSL *s, int is_write, int content_type, 2797 const void *msg_buf, size_t msg_len) 2798 { 2799 if (s->internal->msg_callback != NULL) 2800 s->internal->msg_callback(is_write, s->version, content_type, 2801 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2802 } 2803 2804 /* Fix this function so that it takes an optional type parameter */ 2805 X509 * 2806 SSL_get_certificate(const SSL *s) 2807 { 2808 return (s->cert->key->x509); 2809 } 2810 2811 /* Fix this function so that it takes an optional type parameter */ 2812 EVP_PKEY * 2813 SSL_get_privatekey(const SSL *s) 2814 { 2815 return (s->cert->key->privatekey); 2816 } 2817 2818 const SSL_CIPHER * 2819 SSL_get_current_cipher(const SSL *s) 2820 { 2821 if ((s->session != NULL) && (s->session->cipher != NULL)) 2822 return (s->session->cipher); 2823 return (NULL); 2824 } 2825 const void * 2826 SSL_get_current_compression(SSL *s) 2827 { 2828 return (NULL); 2829 } 2830 2831 const void * 2832 SSL_get_current_expansion(SSL *s) 2833 { 2834 return (NULL); 2835 } 2836 2837 size_t 2838 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2839 { 2840 size_t len = sizeof(s->s3->client_random); 2841 2842 if (out == NULL) 2843 return len; 2844 2845 if (len > max_out) 2846 len = max_out; 2847 2848 memcpy(out, s->s3->client_random, len); 2849 2850 return len; 2851 } 2852 2853 size_t 2854 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2855 { 2856 size_t len = sizeof(s->s3->server_random); 2857 2858 if (out == NULL) 2859 return len; 2860 2861 if (len > max_out) 2862 len = max_out; 2863 2864 memcpy(out, s->s3->server_random, len); 2865 2866 return len; 2867 } 2868 2869 int 2870 ssl_init_wbio_buffer(SSL *s, int push) 2871 { 2872 BIO *bbio; 2873 2874 if (s->bbio == NULL) { 2875 bbio = BIO_new(BIO_f_buffer()); 2876 if (bbio == NULL) 2877 return (0); 2878 s->bbio = bbio; 2879 } else { 2880 bbio = s->bbio; 2881 if (s->bbio == s->wbio) 2882 s->wbio = BIO_pop(s->wbio); 2883 } 2884 (void)BIO_reset(bbio); 2885 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2886 if (!BIO_set_read_buffer_size(bbio, 1)) { 2887 SSLerror(s, ERR_R_BUF_LIB); 2888 return (0); 2889 } 2890 if (push) { 2891 if (s->wbio != bbio) 2892 s->wbio = BIO_push(bbio, s->wbio); 2893 } else { 2894 if (s->wbio == bbio) 2895 s->wbio = BIO_pop(bbio); 2896 } 2897 return (1); 2898 } 2899 2900 void 2901 ssl_free_wbio_buffer(SSL *s) 2902 { 2903 if (s == NULL) 2904 return; 2905 2906 if (s->bbio == NULL) 2907 return; 2908 2909 if (s->bbio == s->wbio) { 2910 /* remove buffering */ 2911 s->wbio = BIO_pop(s->wbio); 2912 } 2913 BIO_free(s->bbio); 2914 s->bbio = NULL; 2915 } 2916 2917 void 2918 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2919 { 2920 ctx->internal->quiet_shutdown = mode; 2921 } 2922 2923 int 2924 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2925 { 2926 return (ctx->internal->quiet_shutdown); 2927 } 2928 2929 void 2930 SSL_set_quiet_shutdown(SSL *s, int mode) 2931 { 2932 s->internal->quiet_shutdown = mode; 2933 } 2934 2935 int 2936 SSL_get_quiet_shutdown(const SSL *s) 2937 { 2938 return (s->internal->quiet_shutdown); 2939 } 2940 2941 void 2942 SSL_set_shutdown(SSL *s, int mode) 2943 { 2944 s->internal->shutdown = mode; 2945 } 2946 2947 int 2948 SSL_get_shutdown(const SSL *s) 2949 { 2950 return (s->internal->shutdown); 2951 } 2952 2953 int 2954 SSL_version(const SSL *s) 2955 { 2956 return (s->version); 2957 } 2958 2959 SSL_CTX * 2960 SSL_get_SSL_CTX(const SSL *ssl) 2961 { 2962 return (ssl->ctx); 2963 } 2964 2965 SSL_CTX * 2966 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2967 { 2968 SSL_CERT *new_cert; 2969 2970 if (ctx == NULL) 2971 ctx = ssl->initial_ctx; 2972 if (ssl->ctx == ctx) 2973 return (ssl->ctx); 2974 2975 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2976 return NULL; 2977 ssl_cert_free(ssl->cert); 2978 ssl->cert = new_cert; 2979 2980 SSL_CTX_up_ref(ctx); 2981 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2982 ssl->ctx = ctx; 2983 2984 return (ssl->ctx); 2985 } 2986 2987 int 2988 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2989 { 2990 return (X509_STORE_set_default_paths(ctx->cert_store)); 2991 } 2992 2993 int 2994 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2995 const char *CApath) 2996 { 2997 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2998 } 2999 3000 int 3001 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3002 { 3003 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3004 } 3005 3006 void 3007 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3008 { 3009 ssl->internal->info_callback = cb; 3010 } 3011 3012 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3013 { 3014 return (ssl->internal->info_callback); 3015 } 3016 3017 int 3018 SSL_state(const SSL *ssl) 3019 { 3020 return (ssl->s3->hs.state); 3021 } 3022 3023 void 3024 SSL_set_state(SSL *ssl, int state) 3025 { 3026 ssl->s3->hs.state = state; 3027 } 3028 3029 void 3030 SSL_set_verify_result(SSL *ssl, long arg) 3031 { 3032 ssl->verify_result = arg; 3033 } 3034 3035 long 3036 SSL_get_verify_result(const SSL *ssl) 3037 { 3038 return (ssl->verify_result); 3039 } 3040 3041 int 3042 SSL_verify_client_post_handshake(SSL *ssl) 3043 { 3044 return 0; 3045 } 3046 3047 void 3048 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3049 { 3050 return; 3051 } 3052 3053 void 3054 SSL_set_post_handshake_auth(SSL *ssl, int val) 3055 { 3056 return; 3057 } 3058 3059 int 3060 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3061 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3062 { 3063 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3064 new_func, dup_func, free_func)); 3065 } 3066 3067 int 3068 SSL_set_ex_data(SSL *s, int idx, void *arg) 3069 { 3070 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3071 } 3072 3073 void * 3074 SSL_get_ex_data(const SSL *s, int idx) 3075 { 3076 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3077 } 3078 3079 int 3080 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3081 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3082 { 3083 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3084 new_func, dup_func, free_func)); 3085 } 3086 3087 int 3088 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3089 { 3090 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3091 } 3092 3093 void * 3094 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3095 { 3096 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3097 } 3098 3099 int 3100 ssl_ok(SSL *s) 3101 { 3102 return (1); 3103 } 3104 3105 X509_STORE * 3106 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3107 { 3108 return (ctx->cert_store); 3109 } 3110 3111 void 3112 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3113 { 3114 X509_STORE_free(ctx->cert_store); 3115 ctx->cert_store = store; 3116 } 3117 3118 X509 * 3119 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3120 { 3121 if (ctx->internal->cert == NULL) 3122 return NULL; 3123 3124 return ctx->internal->cert->key->x509; 3125 } 3126 3127 EVP_PKEY * 3128 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3129 { 3130 if (ctx->internal->cert == NULL) 3131 return NULL; 3132 3133 return ctx->internal->cert->key->privatekey; 3134 } 3135 3136 int 3137 SSL_want(const SSL *s) 3138 { 3139 return (s->internal->rwstate); 3140 } 3141 3142 void 3143 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3144 int keylength)) 3145 { 3146 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3147 } 3148 3149 void 3150 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3151 int keylength)) 3152 { 3153 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3154 } 3155 3156 void 3157 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3158 int keylength)) 3159 { 3160 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3161 } 3162 3163 void 3164 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3165 int keylength)) 3166 { 3167 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3168 } 3169 3170 void 3171 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3172 int is_export, int keylength)) 3173 { 3174 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3175 (void (*)(void))ecdh); 3176 } 3177 3178 void 3179 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3180 int keylength)) 3181 { 3182 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3183 } 3184 3185 3186 void 3187 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3188 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3189 { 3190 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3191 (void (*)(void))cb); 3192 } 3193 3194 void 3195 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3196 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3197 { 3198 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3199 } 3200 3201 void 3202 SSL_set_debug(SSL *s, int debug) 3203 { 3204 s->internal->debug = debug; 3205 } 3206 3207 int 3208 SSL_cache_hit(SSL *s) 3209 { 3210 return (s->internal->hit); 3211 } 3212 3213 int 3214 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3215 { 3216 return ctx->internal->min_proto_version; 3217 } 3218 3219 int 3220 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3221 { 3222 return ssl_version_set_min(ctx->method, version, 3223 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3224 &ctx->internal->min_proto_version); 3225 } 3226 3227 int 3228 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3229 { 3230 return ctx->internal->max_proto_version; 3231 } 3232 3233 int 3234 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3235 { 3236 return ssl_version_set_max(ctx->method, version, 3237 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3238 &ctx->internal->max_proto_version); 3239 } 3240 3241 int 3242 SSL_get_min_proto_version(SSL *ssl) 3243 { 3244 return ssl->internal->min_proto_version; 3245 } 3246 3247 int 3248 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3249 { 3250 return ssl_version_set_min(ssl->method, version, 3251 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3252 &ssl->internal->min_proto_version); 3253 } 3254 int 3255 SSL_get_max_proto_version(SSL *ssl) 3256 { 3257 return ssl->internal->max_proto_version; 3258 } 3259 3260 int 3261 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3262 { 3263 return ssl_version_set_max(ssl->method, version, 3264 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3265 &ssl->internal->max_proto_version); 3266 } 3267 3268 const SSL_METHOD * 3269 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3270 { 3271 return ctx->method; 3272 } 3273 3274 static int 3275 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3276 { 3277 SSL_CIPHER const *a = a_; 3278 SSL_CIPHER const *b = b_; 3279 return ssl_cipher_id_cmp(a, b); 3280 } 3281 3282 SSL_CIPHER * 3283 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3284 { 3285 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3286 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3287 } 3288