1 /* $OpenBSD: ssl_lib.c,v 1.299 2022/07/20 14:13:13 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <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 #include "ssl_tlsext.h" 166 167 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 168 169 int 170 SSL_clear(SSL *s) 171 { 172 if (s->method == NULL) { 173 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 174 return (0); 175 } 176 177 if (ssl_clear_bad_session(s)) { 178 SSL_SESSION_free(s->session); 179 s->session = NULL; 180 } 181 182 s->error = 0; 183 s->internal->hit = 0; 184 s->internal->shutdown = 0; 185 186 if (s->internal->renegotiate) { 187 SSLerror(s, ERR_R_INTERNAL_ERROR); 188 return (0); 189 } 190 191 s->version = s->method->version; 192 s->client_version = s->version; 193 s->internal->rwstate = SSL_NOTHING; 194 s->internal->rstate = SSL_ST_READ_HEADER; 195 196 tls13_ctx_free(s->internal->tls13); 197 s->internal->tls13 = NULL; 198 199 ssl3_release_init_buffer(s); 200 201 ssl_clear_cipher_state(s); 202 203 s->internal->first_packet = 0; 204 205 /* 206 * Check to see if we were changed into a different method, if 207 * so, revert back if we are not doing session-id reuse. 208 */ 209 if (!s->internal->in_handshake && (s->session == NULL) && 210 (s->method != s->ctx->method)) { 211 s->method->ssl_free(s); 212 s->method = s->ctx->method; 213 if (!s->method->ssl_new(s)) 214 return (0); 215 } else 216 s->method->ssl_clear(s); 217 218 return (1); 219 } 220 221 /* Used to change an SSL_CTXs default SSL method type */ 222 int 223 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 224 { 225 STACK_OF(SSL_CIPHER) *ciphers; 226 227 ctx->method = meth; 228 229 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 230 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST, 231 ctx->internal->cert); 232 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 233 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 234 return (0); 235 } 236 return (1); 237 } 238 239 SSL * 240 SSL_new(SSL_CTX *ctx) 241 { 242 SSL *s; 243 CBS cbs; 244 245 if (ctx == NULL) { 246 SSLerrorx(SSL_R_NULL_SSL_CTX); 247 return (NULL); 248 } 249 if (ctx->method == NULL) { 250 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 251 return (NULL); 252 } 253 254 if ((s = calloc(1, sizeof(*s))) == NULL) 255 goto err; 256 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 257 goto err; 258 259 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 260 goto err; 261 262 s->internal->min_tls_version = ctx->internal->min_tls_version; 263 s->internal->max_tls_version = ctx->internal->max_tls_version; 264 s->internal->min_proto_version = ctx->internal->min_proto_version; 265 s->internal->max_proto_version = ctx->internal->max_proto_version; 266 267 s->internal->options = ctx->internal->options; 268 s->internal->mode = ctx->internal->mode; 269 s->internal->max_cert_list = ctx->internal->max_cert_list; 270 s->internal->num_tickets = ctx->internal->num_tickets; 271 272 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 273 goto err; 274 275 s->internal->read_ahead = ctx->internal->read_ahead; 276 s->internal->msg_callback = ctx->internal->msg_callback; 277 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 278 s->verify_mode = ctx->verify_mode; 279 s->sid_ctx_length = ctx->sid_ctx_length; 280 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 281 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 282 s->internal->verify_callback = ctx->internal->default_verify_callback; 283 s->internal->generate_session_id = ctx->internal->generate_session_id; 284 285 s->param = X509_VERIFY_PARAM_new(); 286 if (!s->param) 287 goto err; 288 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 289 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 290 s->max_send_fragment = ctx->internal->max_send_fragment; 291 292 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 293 s->ctx = ctx; 294 s->internal->tlsext_debug_cb = 0; 295 s->internal->tlsext_debug_arg = NULL; 296 s->internal->tlsext_ticket_expected = 0; 297 s->tlsext_status_type = -1; 298 s->internal->tlsext_status_expected = 0; 299 s->internal->tlsext_ocsp_ids = NULL; 300 s->internal->tlsext_ocsp_exts = NULL; 301 s->internal->tlsext_ocsp_resp = NULL; 302 s->internal->tlsext_ocsp_resp_len = 0; 303 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 304 s->initial_ctx = ctx; 305 306 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 307 s->internal->tlsext_ecpointformatlist = 308 calloc(ctx->internal->tlsext_ecpointformatlist_length, 309 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 310 if (s->internal->tlsext_ecpointformatlist == NULL) 311 goto err; 312 memcpy(s->internal->tlsext_ecpointformatlist, 313 ctx->internal->tlsext_ecpointformatlist, 314 ctx->internal->tlsext_ecpointformatlist_length * 315 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 316 s->internal->tlsext_ecpointformatlist_length = 317 ctx->internal->tlsext_ecpointformatlist_length; 318 } 319 if (ctx->internal->tlsext_supportedgroups != NULL) { 320 s->internal->tlsext_supportedgroups = 321 calloc(ctx->internal->tlsext_supportedgroups_length, 322 sizeof(ctx->internal->tlsext_supportedgroups[0])); 323 if (s->internal->tlsext_supportedgroups == NULL) 324 goto err; 325 memcpy(s->internal->tlsext_supportedgroups, 326 ctx->internal->tlsext_supportedgroups, 327 ctx->internal->tlsext_supportedgroups_length * 328 sizeof(ctx->internal->tlsext_supportedgroups[0])); 329 s->internal->tlsext_supportedgroups_length = 330 ctx->internal->tlsext_supportedgroups_length; 331 } 332 333 CBS_init(&cbs, ctx->internal->alpn_client_proto_list, 334 ctx->internal->alpn_client_proto_list_len); 335 if (!CBS_stow(&cbs, &s->internal->alpn_client_proto_list, 336 &s->internal->alpn_client_proto_list_len)) 337 goto err; 338 339 s->verify_result = X509_V_OK; 340 341 s->method = ctx->method; 342 343 if (!s->method->ssl_new(s)) 344 goto err; 345 346 s->references = 1; 347 s->server = ctx->method->server; 348 349 SSL_clear(s); 350 351 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 352 353 return (s); 354 355 err: 356 SSL_free(s); 357 SSLerrorx(ERR_R_MALLOC_FAILURE); 358 return (NULL); 359 } 360 361 int 362 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 363 unsigned int sid_ctx_len) 364 { 365 if (sid_ctx_len > sizeof ctx->sid_ctx) { 366 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 367 return (0); 368 } 369 ctx->sid_ctx_length = sid_ctx_len; 370 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 371 372 return (1); 373 } 374 375 int 376 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 377 unsigned int sid_ctx_len) 378 { 379 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 380 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 381 return (0); 382 } 383 ssl->sid_ctx_length = sid_ctx_len; 384 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 385 386 return (1); 387 } 388 389 int 390 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 391 { 392 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 393 ctx->internal->generate_session_id = cb; 394 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 395 return (1); 396 } 397 398 int 399 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 400 { 401 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 402 ssl->internal->generate_session_id = cb; 403 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 404 return (1); 405 } 406 407 int 408 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 409 unsigned int id_len) 410 { 411 /* 412 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 413 * shows how we can "construct" a session to give us the desired 414 * check - ie. to find if there's a session in the hash table 415 * that would conflict with any new session built out of this 416 * id/id_len and the ssl_version in use by this SSL. 417 */ 418 SSL_SESSION r, *p; 419 420 if (id_len > sizeof r.session_id) 421 return (0); 422 423 r.ssl_version = ssl->version; 424 r.session_id_length = id_len; 425 memcpy(r.session_id, id, id_len); 426 427 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 428 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 429 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 430 return (p != NULL); 431 } 432 433 int 434 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 435 { 436 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 437 } 438 439 int 440 SSL_set_purpose(SSL *s, int purpose) 441 { 442 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 443 } 444 445 int 446 SSL_CTX_set_trust(SSL_CTX *s, int trust) 447 { 448 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 449 } 450 451 int 452 SSL_set_trust(SSL *s, int trust) 453 { 454 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 455 } 456 457 int 458 SSL_set1_host(SSL *s, const char *hostname) 459 { 460 struct in_addr ina; 461 struct in6_addr in6a; 462 463 if (hostname != NULL && *hostname != '\0' && 464 (inet_pton(AF_INET, hostname, &ina) == 1 || 465 inet_pton(AF_INET6, hostname, &in6a) == 1)) 466 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 467 else 468 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 469 } 470 471 void 472 SSL_set_hostflags(SSL *s, unsigned int flags) 473 { 474 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 475 } 476 477 const char * 478 SSL_get0_peername(SSL *s) 479 { 480 return X509_VERIFY_PARAM_get0_peername(s->param); 481 } 482 483 X509_VERIFY_PARAM * 484 SSL_CTX_get0_param(SSL_CTX *ctx) 485 { 486 return (ctx->param); 487 } 488 489 int 490 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 491 { 492 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 493 } 494 495 X509_VERIFY_PARAM * 496 SSL_get0_param(SSL *ssl) 497 { 498 return (ssl->param); 499 } 500 501 int 502 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 503 { 504 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 505 } 506 507 void 508 SSL_free(SSL *s) 509 { 510 int i; 511 512 if (s == NULL) 513 return; 514 515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 516 if (i > 0) 517 return; 518 519 X509_VERIFY_PARAM_free(s->param); 520 521 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 522 523 if (s->bbio != NULL) { 524 /* If the buffering BIO is in place, pop it off */ 525 if (s->bbio == s->wbio) { 526 s->wbio = BIO_pop(s->wbio); 527 } 528 BIO_free(s->bbio); 529 s->bbio = NULL; 530 } 531 532 if (s->rbio != s->wbio) 533 BIO_free_all(s->rbio); 534 BIO_free_all(s->wbio); 535 536 tls13_ctx_free(s->internal->tls13); 537 538 ssl3_release_init_buffer(s); 539 540 sk_SSL_CIPHER_free(s->cipher_list); 541 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 542 543 /* Make the next call work :-) */ 544 if (s->session != NULL) { 545 ssl_clear_bad_session(s); 546 SSL_SESSION_free(s->session); 547 } 548 549 ssl_clear_cipher_state(s); 550 551 ssl_cert_free(s->cert); 552 553 free(s->tlsext_hostname); 554 SSL_CTX_free(s->initial_ctx); 555 556 free(s->internal->tlsext_ecpointformatlist); 557 free(s->internal->tlsext_supportedgroups); 558 559 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 560 X509_EXTENSION_free); 561 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 562 free(s->internal->tlsext_ocsp_resp); 563 564 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 565 566 if (s->method != NULL) 567 s->method->ssl_free(s); 568 569 SSL_CTX_free(s->ctx); 570 571 free(s->internal->alpn_client_proto_list); 572 573 free(s->internal->quic_transport_params); 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 = BIO_next(s->wbio); 599 BIO_set_next(s->bbio, 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 void 618 SSL_set0_rbio(SSL *s, BIO *rbio) 619 { 620 BIO_free_all(s->rbio); 621 s->rbio = rbio; 622 } 623 624 BIO * 625 SSL_get_wbio(const SSL *s) 626 { 627 return (s->wbio); 628 } 629 630 int 631 SSL_get_fd(const SSL *s) 632 { 633 return (SSL_get_rfd(s)); 634 } 635 636 int 637 SSL_get_rfd(const SSL *s) 638 { 639 int ret = -1; 640 BIO *b, *r; 641 642 b = SSL_get_rbio(s); 643 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 644 if (r != NULL) 645 BIO_get_fd(r, &ret); 646 return (ret); 647 } 648 649 int 650 SSL_get_wfd(const SSL *s) 651 { 652 int ret = -1; 653 BIO *b, *r; 654 655 b = SSL_get_wbio(s); 656 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 657 if (r != NULL) 658 BIO_get_fd(r, &ret); 659 return (ret); 660 } 661 662 int 663 SSL_set_fd(SSL *s, int fd) 664 { 665 int ret = 0; 666 BIO *bio = NULL; 667 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, bio, bio); 676 ret = 1; 677 err: 678 return (ret); 679 } 680 681 int 682 SSL_set_wfd(SSL *s, int fd) 683 { 684 int ret = 0; 685 BIO *bio = NULL; 686 687 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 688 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 689 bio = BIO_new(BIO_s_socket()); 690 691 if (bio == NULL) { 692 SSLerror(s, ERR_R_BUF_LIB); 693 goto err; 694 } 695 BIO_set_fd(bio, fd, BIO_NOCLOSE); 696 SSL_set_bio(s, SSL_get_rbio(s), bio); 697 } else 698 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 699 ret = 1; 700 err: 701 return (ret); 702 } 703 704 int 705 SSL_set_rfd(SSL *s, int fd) 706 { 707 int ret = 0; 708 BIO *bio = NULL; 709 710 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 711 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 712 bio = BIO_new(BIO_s_socket()); 713 714 if (bio == NULL) { 715 SSLerror(s, ERR_R_BUF_LIB); 716 goto err; 717 } 718 BIO_set_fd(bio, fd, BIO_NOCLOSE); 719 SSL_set_bio(s, bio, SSL_get_wbio(s)); 720 } else 721 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 722 ret = 1; 723 err: 724 return (ret); 725 } 726 727 728 /* return length of latest Finished message we sent, copy to 'buf' */ 729 size_t 730 SSL_get_finished(const SSL *s, void *buf, size_t count) 731 { 732 size_t ret; 733 734 ret = s->s3->hs.finished_len; 735 if (count > ret) 736 count = ret; 737 memcpy(buf, s->s3->hs.finished, count); 738 return (ret); 739 } 740 741 /* return length of latest Finished message we expected, copy to 'buf' */ 742 size_t 743 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 744 { 745 size_t ret; 746 747 ret = s->s3->hs.peer_finished_len; 748 if (count > ret) 749 count = ret; 750 memcpy(buf, s->s3->hs.peer_finished, count); 751 return (ret); 752 } 753 754 755 int 756 SSL_get_verify_mode(const SSL *s) 757 { 758 return (s->verify_mode); 759 } 760 761 int 762 SSL_get_verify_depth(const SSL *s) 763 { 764 return (X509_VERIFY_PARAM_get_depth(s->param)); 765 } 766 767 int 768 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 769 { 770 return (s->internal->verify_callback); 771 } 772 773 void 774 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 775 { 776 ctx->internal->keylog_callback = cb; 777 } 778 779 SSL_CTX_keylog_cb_func 780 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 781 { 782 return (ctx->internal->keylog_callback); 783 } 784 785 int 786 SSL_set_num_tickets(SSL *s, size_t num_tickets) 787 { 788 s->internal->num_tickets = num_tickets; 789 790 return 1; 791 } 792 793 size_t 794 SSL_get_num_tickets(const SSL *s) 795 { 796 return s->internal->num_tickets; 797 } 798 799 int 800 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 801 { 802 ctx->internal->num_tickets = num_tickets; 803 804 return 1; 805 } 806 807 size_t 808 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 809 { 810 return ctx->internal->num_tickets; 811 } 812 813 int 814 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 815 { 816 return (ctx->verify_mode); 817 } 818 819 int 820 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 821 { 822 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 823 } 824 825 int 826 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 827 { 828 return (ctx->internal->default_verify_callback); 829 } 830 831 void 832 SSL_set_verify(SSL *s, int mode, 833 int (*callback)(int ok, X509_STORE_CTX *ctx)) 834 { 835 s->verify_mode = mode; 836 if (callback != NULL) 837 s->internal->verify_callback = callback; 838 } 839 840 void 841 SSL_set_verify_depth(SSL *s, int depth) 842 { 843 X509_VERIFY_PARAM_set_depth(s->param, depth); 844 } 845 846 void 847 SSL_set_read_ahead(SSL *s, int yes) 848 { 849 s->internal->read_ahead = yes; 850 } 851 852 int 853 SSL_get_read_ahead(const SSL *s) 854 { 855 return (s->internal->read_ahead); 856 } 857 858 int 859 SSL_pending(const SSL *s) 860 { 861 return (s->method->ssl_pending(s)); 862 } 863 864 X509 * 865 SSL_get_peer_certificate(const SSL *s) 866 { 867 X509 *cert; 868 869 if (s == NULL || s->session == NULL) 870 return NULL; 871 872 if ((cert = s->session->peer_cert) == NULL) 873 return NULL; 874 875 X509_up_ref(cert); 876 877 return cert; 878 } 879 880 STACK_OF(X509) * 881 SSL_get_peer_cert_chain(const SSL *s) 882 { 883 if (s == NULL || s->session == NULL) 884 return NULL; 885 886 /* 887 * If we are a client, cert_chain includes the peer's own 888 * certificate; if we are a server, it does not. 889 */ 890 return s->session->cert_chain; 891 } 892 893 STACK_OF(X509) * 894 SSL_get0_verified_chain(const SSL *s) 895 { 896 return s->internal->verified_chain; 897 } 898 899 /* 900 * Now in theory, since the calling process own 't' it should be safe to 901 * modify. We need to be able to read f without being hassled 902 */ 903 int 904 SSL_copy_session_id(SSL *t, const SSL *f) 905 { 906 SSL_CERT *tmp; 907 908 /* Do we need to do SSL locking? */ 909 if (!SSL_set_session(t, SSL_get_session(f))) 910 return 0; 911 912 /* What if we are set up for one protocol but want to talk another? */ 913 if (t->method != f->method) { 914 t->method->ssl_free(t); 915 t->method = f->method; 916 if (!t->method->ssl_new(t)) 917 return 0; 918 } 919 920 tmp = t->cert; 921 if (f->cert != NULL) { 922 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 923 t->cert = f->cert; 924 } else 925 t->cert = NULL; 926 ssl_cert_free(tmp); 927 928 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 929 return 0; 930 931 return 1; 932 } 933 934 /* Fix this so it checks all the valid key/cert options */ 935 int 936 SSL_CTX_check_private_key(const SSL_CTX *ctx) 937 { 938 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 939 (ctx->internal->cert->key->x509 == NULL)) { 940 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 941 return (0); 942 } 943 if (ctx->internal->cert->key->privatekey == NULL) { 944 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 945 return (0); 946 } 947 return (X509_check_private_key(ctx->internal->cert->key->x509, 948 ctx->internal->cert->key->privatekey)); 949 } 950 951 /* Fix this function so that it takes an optional type parameter */ 952 int 953 SSL_check_private_key(const SSL *ssl) 954 { 955 if (ssl == NULL) { 956 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 957 return (0); 958 } 959 if (ssl->cert == NULL) { 960 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 961 return (0); 962 } 963 if (ssl->cert->key->x509 == NULL) { 964 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 965 return (0); 966 } 967 if (ssl->cert->key->privatekey == NULL) { 968 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 969 return (0); 970 } 971 return (X509_check_private_key(ssl->cert->key->x509, 972 ssl->cert->key->privatekey)); 973 } 974 975 int 976 SSL_accept(SSL *s) 977 { 978 if (s->internal->handshake_func == NULL) 979 SSL_set_accept_state(s); /* Not properly initialized yet */ 980 981 return (s->method->ssl_accept(s)); 982 } 983 984 int 985 SSL_connect(SSL *s) 986 { 987 if (s->internal->handshake_func == NULL) 988 SSL_set_connect_state(s); /* Not properly initialized yet */ 989 990 return (s->method->ssl_connect(s)); 991 } 992 993 int 994 SSL_is_dtls(const SSL *s) 995 { 996 return s->method->dtls; 997 } 998 999 int 1000 SSL_is_server(const SSL *s) 1001 { 1002 return s->server; 1003 } 1004 1005 static long 1006 ssl_get_default_timeout() 1007 { 1008 /* 1009 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1010 * is way too long for http, the cache would over fill. 1011 */ 1012 return (2 * 60 * 60); 1013 } 1014 1015 long 1016 SSL_get_default_timeout(const SSL *s) 1017 { 1018 return (ssl_get_default_timeout()); 1019 } 1020 1021 int 1022 SSL_read(SSL *s, void *buf, int num) 1023 { 1024 if (num < 0) { 1025 SSLerror(s, SSL_R_BAD_LENGTH); 1026 return -1; 1027 } 1028 1029 if (s->internal->handshake_func == NULL) { 1030 SSLerror(s, SSL_R_UNINITIALIZED); 1031 return (-1); 1032 } 1033 1034 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1035 s->internal->rwstate = SSL_NOTHING; 1036 return (0); 1037 } 1038 return ssl3_read(s, buf, num); 1039 } 1040 1041 int 1042 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1043 { 1044 int ret; 1045 1046 /* We simply don't bother supporting enormous reads */ 1047 if (num > INT_MAX) { 1048 SSLerror(s, SSL_R_BAD_LENGTH); 1049 return 0; 1050 } 1051 1052 ret = SSL_read(s, buf, (int)num); 1053 if (ret < 0) 1054 ret = 0; 1055 *bytes_read = ret; 1056 1057 return ret > 0; 1058 } 1059 1060 int 1061 SSL_peek(SSL *s, void *buf, int num) 1062 { 1063 if (num < 0) { 1064 SSLerror(s, SSL_R_BAD_LENGTH); 1065 return -1; 1066 } 1067 1068 if (s->internal->handshake_func == NULL) { 1069 SSLerror(s, SSL_R_UNINITIALIZED); 1070 return (-1); 1071 } 1072 1073 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1074 return (0); 1075 } 1076 return ssl3_peek(s, buf, num); 1077 } 1078 1079 int 1080 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1081 { 1082 int ret; 1083 1084 /* We simply don't bother supporting enormous peeks */ 1085 if (num > INT_MAX) { 1086 SSLerror(s, SSL_R_BAD_LENGTH); 1087 return 0; 1088 } 1089 1090 ret = SSL_peek(s, buf, (int)num); 1091 if (ret < 0) 1092 ret = 0; 1093 *bytes_peeked = ret; 1094 1095 return ret > 0; 1096 } 1097 1098 int 1099 SSL_write(SSL *s, const void *buf, int num) 1100 { 1101 if (num < 0) { 1102 SSLerror(s, SSL_R_BAD_LENGTH); 1103 return -1; 1104 } 1105 1106 if (s->internal->handshake_func == NULL) { 1107 SSLerror(s, SSL_R_UNINITIALIZED); 1108 return (-1); 1109 } 1110 1111 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1112 s->internal->rwstate = SSL_NOTHING; 1113 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1114 return (-1); 1115 } 1116 return ssl3_write(s, buf, num); 1117 } 1118 1119 int 1120 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1121 { 1122 int ret; 1123 1124 /* We simply don't bother supporting enormous writes */ 1125 if (num > INT_MAX) { 1126 SSLerror(s, SSL_R_BAD_LENGTH); 1127 return 0; 1128 } 1129 1130 if (num == 0) { 1131 /* This API is special */ 1132 bytes_written = 0; 1133 return 1; 1134 } 1135 1136 ret = SSL_write(s, buf, (int)num); 1137 if (ret < 0) 1138 ret = 0; 1139 *bytes_written = ret; 1140 1141 return ret > 0; 1142 } 1143 1144 uint32_t 1145 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1146 { 1147 return 0; 1148 } 1149 1150 int 1151 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1152 { 1153 return 1; 1154 } 1155 1156 uint32_t 1157 SSL_get_max_early_data(const SSL *s) 1158 { 1159 return 0; 1160 } 1161 1162 int 1163 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1164 { 1165 return 1; 1166 } 1167 1168 int 1169 SSL_get_early_data_status(const SSL *s) 1170 { 1171 return SSL_EARLY_DATA_REJECTED; 1172 } 1173 1174 int 1175 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1176 { 1177 *readbytes = 0; 1178 1179 if (!s->server) { 1180 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1181 return SSL_READ_EARLY_DATA_ERROR; 1182 } 1183 1184 return SSL_READ_EARLY_DATA_FINISH; 1185 } 1186 1187 int 1188 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1189 { 1190 *written = 0; 1191 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1192 return 0; 1193 } 1194 1195 int 1196 SSL_shutdown(SSL *s) 1197 { 1198 /* 1199 * Note that this function behaves differently from what one might 1200 * expect. Return values are 0 for no success (yet), 1201 * 1 for success; but calling it once is usually not enough, 1202 * even if blocking I/O is used (see ssl3_shutdown). 1203 */ 1204 1205 if (s->internal->handshake_func == NULL) { 1206 SSLerror(s, SSL_R_UNINITIALIZED); 1207 return (-1); 1208 } 1209 1210 if (s != NULL && !SSL_in_init(s)) 1211 return (s->method->ssl_shutdown(s)); 1212 1213 return (1); 1214 } 1215 1216 int 1217 SSL_renegotiate(SSL *s) 1218 { 1219 if (s->internal->renegotiate == 0) 1220 s->internal->renegotiate = 1; 1221 1222 s->internal->new_session = 1; 1223 1224 return (s->method->ssl_renegotiate(s)); 1225 } 1226 1227 int 1228 SSL_renegotiate_abbreviated(SSL *s) 1229 { 1230 if (s->internal->renegotiate == 0) 1231 s->internal->renegotiate = 1; 1232 1233 s->internal->new_session = 0; 1234 1235 return (s->method->ssl_renegotiate(s)); 1236 } 1237 1238 int 1239 SSL_renegotiate_pending(SSL *s) 1240 { 1241 /* 1242 * Becomes true when negotiation is requested; 1243 * false again once a handshake has finished. 1244 */ 1245 return (s->internal->renegotiate != 0); 1246 } 1247 1248 long 1249 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1250 { 1251 long l; 1252 1253 switch (cmd) { 1254 case SSL_CTRL_GET_READ_AHEAD: 1255 return (s->internal->read_ahead); 1256 case SSL_CTRL_SET_READ_AHEAD: 1257 l = s->internal->read_ahead; 1258 s->internal->read_ahead = larg; 1259 return (l); 1260 1261 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1262 s->internal->msg_callback_arg = parg; 1263 return (1); 1264 1265 case SSL_CTRL_OPTIONS: 1266 return (s->internal->options|=larg); 1267 case SSL_CTRL_CLEAR_OPTIONS: 1268 return (s->internal->options&=~larg); 1269 case SSL_CTRL_MODE: 1270 return (s->internal->mode|=larg); 1271 case SSL_CTRL_CLEAR_MODE: 1272 return (s->internal->mode &=~larg); 1273 case SSL_CTRL_GET_MAX_CERT_LIST: 1274 return (s->internal->max_cert_list); 1275 case SSL_CTRL_SET_MAX_CERT_LIST: 1276 l = s->internal->max_cert_list; 1277 s->internal->max_cert_list = larg; 1278 return (l); 1279 case SSL_CTRL_SET_MTU: 1280 #ifndef OPENSSL_NO_DTLS1 1281 if (larg < (long)dtls1_min_mtu()) 1282 return (0); 1283 #endif 1284 if (SSL_is_dtls(s)) { 1285 s->d1->mtu = larg; 1286 return (larg); 1287 } 1288 return (0); 1289 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1290 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1291 return (0); 1292 s->max_send_fragment = larg; 1293 return (1); 1294 case SSL_CTRL_GET_RI_SUPPORT: 1295 if (s->s3) 1296 return (s->s3->send_connection_binding); 1297 else return (0); 1298 default: 1299 if (SSL_is_dtls(s)) 1300 return dtls1_ctrl(s, cmd, larg, parg); 1301 return ssl3_ctrl(s, cmd, larg, parg); 1302 } 1303 } 1304 1305 long 1306 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1307 { 1308 switch (cmd) { 1309 case SSL_CTRL_SET_MSG_CALLBACK: 1310 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1311 return (1); 1312 1313 default: 1314 return (ssl3_callback_ctrl(s, cmd, fp)); 1315 } 1316 } 1317 1318 struct lhash_st_SSL_SESSION * 1319 SSL_CTX_sessions(SSL_CTX *ctx) 1320 { 1321 return (ctx->internal->sessions); 1322 } 1323 1324 long 1325 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1326 { 1327 long l; 1328 1329 switch (cmd) { 1330 case SSL_CTRL_GET_READ_AHEAD: 1331 return (ctx->internal->read_ahead); 1332 case SSL_CTRL_SET_READ_AHEAD: 1333 l = ctx->internal->read_ahead; 1334 ctx->internal->read_ahead = larg; 1335 return (l); 1336 1337 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1338 ctx->internal->msg_callback_arg = parg; 1339 return (1); 1340 1341 case SSL_CTRL_GET_MAX_CERT_LIST: 1342 return (ctx->internal->max_cert_list); 1343 case SSL_CTRL_SET_MAX_CERT_LIST: 1344 l = ctx->internal->max_cert_list; 1345 ctx->internal->max_cert_list = larg; 1346 return (l); 1347 1348 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1349 l = ctx->internal->session_cache_size; 1350 ctx->internal->session_cache_size = larg; 1351 return (l); 1352 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1353 return (ctx->internal->session_cache_size); 1354 case SSL_CTRL_SET_SESS_CACHE_MODE: 1355 l = ctx->internal->session_cache_mode; 1356 ctx->internal->session_cache_mode = larg; 1357 return (l); 1358 case SSL_CTRL_GET_SESS_CACHE_MODE: 1359 return (ctx->internal->session_cache_mode); 1360 1361 case SSL_CTRL_SESS_NUMBER: 1362 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1363 case SSL_CTRL_SESS_CONNECT: 1364 return (ctx->internal->stats.sess_connect); 1365 case SSL_CTRL_SESS_CONNECT_GOOD: 1366 return (ctx->internal->stats.sess_connect_good); 1367 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1368 return (ctx->internal->stats.sess_connect_renegotiate); 1369 case SSL_CTRL_SESS_ACCEPT: 1370 return (ctx->internal->stats.sess_accept); 1371 case SSL_CTRL_SESS_ACCEPT_GOOD: 1372 return (ctx->internal->stats.sess_accept_good); 1373 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1374 return (ctx->internal->stats.sess_accept_renegotiate); 1375 case SSL_CTRL_SESS_HIT: 1376 return (ctx->internal->stats.sess_hit); 1377 case SSL_CTRL_SESS_CB_HIT: 1378 return (ctx->internal->stats.sess_cb_hit); 1379 case SSL_CTRL_SESS_MISSES: 1380 return (ctx->internal->stats.sess_miss); 1381 case SSL_CTRL_SESS_TIMEOUTS: 1382 return (ctx->internal->stats.sess_timeout); 1383 case SSL_CTRL_SESS_CACHE_FULL: 1384 return (ctx->internal->stats.sess_cache_full); 1385 case SSL_CTRL_OPTIONS: 1386 return (ctx->internal->options|=larg); 1387 case SSL_CTRL_CLEAR_OPTIONS: 1388 return (ctx->internal->options&=~larg); 1389 case SSL_CTRL_MODE: 1390 return (ctx->internal->mode|=larg); 1391 case SSL_CTRL_CLEAR_MODE: 1392 return (ctx->internal->mode&=~larg); 1393 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1394 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1395 return (0); 1396 ctx->internal->max_send_fragment = larg; 1397 return (1); 1398 default: 1399 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1400 } 1401 } 1402 1403 long 1404 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1405 { 1406 switch (cmd) { 1407 case SSL_CTRL_SET_MSG_CALLBACK: 1408 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1409 return (1); 1410 1411 default: 1412 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1413 } 1414 } 1415 1416 int 1417 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1418 { 1419 long l; 1420 1421 l = a->id - b->id; 1422 if (l == 0L) 1423 return (0); 1424 else 1425 return ((l > 0) ? 1:-1); 1426 } 1427 1428 STACK_OF(SSL_CIPHER) * 1429 SSL_get_ciphers(const SSL *s) 1430 { 1431 if (s == NULL) 1432 return (NULL); 1433 if (s->cipher_list != NULL) 1434 return (s->cipher_list); 1435 1436 return (s->ctx->cipher_list); 1437 } 1438 1439 STACK_OF(SSL_CIPHER) * 1440 SSL_get_client_ciphers(const SSL *s) 1441 { 1442 if (s == NULL || s->session == NULL || !s->server) 1443 return NULL; 1444 return s->session->ciphers; 1445 } 1446 1447 STACK_OF(SSL_CIPHER) * 1448 SSL_get1_supported_ciphers(SSL *s) 1449 { 1450 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1451 SSL_CIPHER *cipher; 1452 uint16_t min_vers, max_vers; 1453 int i; 1454 1455 if (s == NULL) 1456 return NULL; 1457 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1458 return NULL; 1459 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1460 return NULL; 1461 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1462 return NULL; 1463 1464 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1465 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1466 goto err; 1467 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1468 max_vers)) 1469 continue; 1470 if (!ssl_security_supported_cipher(s, cipher)) 1471 continue; 1472 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1473 goto err; 1474 } 1475 1476 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1477 return supported_ciphers; 1478 1479 err: 1480 sk_SSL_CIPHER_free(supported_ciphers); 1481 return NULL; 1482 } 1483 1484 /* See if we have any ECC cipher suites. */ 1485 int 1486 ssl_has_ecc_ciphers(SSL *s) 1487 { 1488 STACK_OF(SSL_CIPHER) *ciphers; 1489 unsigned long alg_k, alg_a; 1490 SSL_CIPHER *cipher; 1491 int i; 1492 1493 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1494 return 0; 1495 1496 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1497 cipher = sk_SSL_CIPHER_value(ciphers, i); 1498 1499 alg_k = cipher->algorithm_mkey; 1500 alg_a = cipher->algorithm_auth; 1501 1502 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1503 return 1; 1504 } 1505 1506 return 0; 1507 } 1508 1509 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1510 const char * 1511 SSL_get_cipher_list(const SSL *s, int n) 1512 { 1513 STACK_OF(SSL_CIPHER) *ciphers; 1514 const SSL_CIPHER *cipher; 1515 1516 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1517 return (NULL); 1518 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1519 return (NULL); 1520 1521 return (cipher->name); 1522 } 1523 1524 STACK_OF(SSL_CIPHER) * 1525 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1526 { 1527 if (ctx == NULL) 1528 return NULL; 1529 return ctx->cipher_list; 1530 } 1531 1532 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1533 int 1534 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1535 { 1536 STACK_OF(SSL_CIPHER) *ciphers; 1537 1538 /* 1539 * ssl_create_cipher_list may return an empty stack if it was unable to 1540 * find a cipher matching the given rule string (for example if the 1541 * rule string specifies a cipher which has been disabled). This is not 1542 * an error as far as ssl_create_cipher_list is concerned, and hence 1543 * ctx->cipher_list has been updated. 1544 */ 1545 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1546 ctx->internal->cipher_list_tls13, str, ctx->internal->cert); 1547 if (ciphers == NULL) { 1548 return (0); 1549 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1550 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1551 return (0); 1552 } 1553 return (1); 1554 } 1555 1556 int 1557 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1558 { 1559 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1560 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1561 return 0; 1562 } 1563 if (!ssl_merge_cipherlists(ctx->cipher_list, 1564 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1565 return 0; 1566 1567 return 1; 1568 } 1569 1570 /* Specify the ciphers to be used by the SSL. */ 1571 int 1572 SSL_set_cipher_list(SSL *s, const char *str) 1573 { 1574 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1575 1576 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1577 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1578 1579 /* See comment in SSL_CTX_set_cipher_list. */ 1580 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1581 ciphers_tls13, str, s->cert); 1582 if (ciphers == NULL) { 1583 return (0); 1584 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1585 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1586 return (0); 1587 } 1588 return (1); 1589 } 1590 1591 int 1592 SSL_set_ciphersuites(SSL *s, const char *str) 1593 { 1594 STACK_OF(SSL_CIPHER) *ciphers; 1595 1596 if ((ciphers = s->cipher_list) == NULL) 1597 ciphers = s->ctx->cipher_list; 1598 1599 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1600 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1601 return (0); 1602 } 1603 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1604 &s->cipher_list)) 1605 return 0; 1606 1607 return 1; 1608 } 1609 1610 char * 1611 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1612 { 1613 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1614 const SSL_CIPHER *cipher; 1615 size_t curlen = 0; 1616 char *end; 1617 int i; 1618 1619 if (!s->server || s->session == NULL || len < 2) 1620 return NULL; 1621 1622 if ((client_ciphers = s->session->ciphers) == NULL) 1623 return NULL; 1624 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1625 return NULL; 1626 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1627 sk_SSL_CIPHER_num(server_ciphers) == 0) 1628 return NULL; 1629 1630 buf[0] = '\0'; 1631 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1632 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1633 1634 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1635 continue; 1636 1637 end = buf + curlen; 1638 if (strlcat(buf, cipher->name, len) >= len || 1639 (curlen = strlcat(buf, ":", len)) >= len) { 1640 /* remove truncated cipher from list */ 1641 *end = '\0'; 1642 break; 1643 } 1644 } 1645 /* remove trailing colon */ 1646 if ((end = strrchr(buf, ':')) != NULL) 1647 *end = '\0'; 1648 return buf; 1649 } 1650 1651 /* 1652 * Return a servername extension value if provided in Client Hello, or NULL. 1653 * So far, only host_name types are defined (RFC 3546). 1654 */ 1655 const char * 1656 SSL_get_servername(const SSL *s, const int type) 1657 { 1658 if (type != TLSEXT_NAMETYPE_host_name) 1659 return (NULL); 1660 1661 return (s->session && !s->tlsext_hostname ? 1662 s->session->tlsext_hostname : 1663 s->tlsext_hostname); 1664 } 1665 1666 int 1667 SSL_get_servername_type(const SSL *s) 1668 { 1669 if (s->session && 1670 (!s->tlsext_hostname ? 1671 s->session->tlsext_hostname : s->tlsext_hostname)) 1672 return (TLSEXT_NAMETYPE_host_name); 1673 return (-1); 1674 } 1675 1676 /* 1677 * SSL_select_next_proto implements standard protocol selection. It is 1678 * expected that this function is called from the callback set by 1679 * SSL_CTX_set_alpn_select_cb. 1680 * 1681 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1682 * strings. The length byte itself is not included in the length. A byte 1683 * string of length 0 is invalid. No byte string may be truncated. 1684 * 1685 * It returns either: 1686 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1687 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1688 */ 1689 int 1690 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1691 const unsigned char *server, unsigned int server_len, 1692 const unsigned char *client, unsigned int client_len) 1693 { 1694 unsigned int i, j; 1695 const unsigned char *result; 1696 int status = OPENSSL_NPN_UNSUPPORTED; 1697 1698 /* 1699 * For each protocol in server preference order, 1700 * see if we support it. 1701 */ 1702 for (i = 0; i < server_len; ) { 1703 for (j = 0; j < client_len; ) { 1704 if (server[i] == client[j] && 1705 memcmp(&server[i + 1], 1706 &client[j + 1], server[i]) == 0) { 1707 /* We found a match */ 1708 result = &server[i]; 1709 status = OPENSSL_NPN_NEGOTIATED; 1710 goto found; 1711 } 1712 j += client[j]; 1713 j++; 1714 } 1715 i += server[i]; 1716 i++; 1717 } 1718 1719 /* There's no overlap between our protocols and the server's list. */ 1720 result = client; 1721 status = OPENSSL_NPN_NO_OVERLAP; 1722 1723 found: 1724 *out = (unsigned char *) result + 1; 1725 *outlen = result[0]; 1726 return (status); 1727 } 1728 1729 /* SSL_get0_next_proto_negotiated is deprecated. */ 1730 void 1731 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1732 unsigned int *len) 1733 { 1734 *data = NULL; 1735 *len = 0; 1736 } 1737 1738 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1739 void 1740 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1741 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1742 { 1743 } 1744 1745 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1746 void 1747 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1748 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1749 unsigned int inlen, void *arg), void *arg) 1750 { 1751 } 1752 1753 /* 1754 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1755 * protocols, which must be in wire-format (i.e. a series of non-empty, 1756 * 8-bit length-prefixed strings). Returns 0 on success. 1757 */ 1758 int 1759 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1760 unsigned int protos_len) 1761 { 1762 CBS cbs; 1763 int failed = 1; 1764 1765 if (protos == NULL) 1766 protos_len = 0; 1767 1768 CBS_init(&cbs, protos, protos_len); 1769 1770 if (protos_len > 0) { 1771 if (!tlsext_alpn_check_format(&cbs)) 1772 goto err; 1773 } 1774 1775 if (!CBS_stow(&cbs, &ctx->internal->alpn_client_proto_list, 1776 &ctx->internal->alpn_client_proto_list_len)) 1777 goto err; 1778 1779 failed = 0; 1780 1781 err: 1782 /* NOTE: Return values are the reverse of what you expect. */ 1783 return failed; 1784 } 1785 1786 /* 1787 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1788 * protocols, which must be in wire-format (i.e. a series of non-empty, 1789 * 8-bit length-prefixed strings). Returns 0 on success. 1790 */ 1791 int 1792 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1793 unsigned int protos_len) 1794 { 1795 CBS cbs; 1796 int failed = 1; 1797 1798 if (protos == NULL) 1799 protos_len = 0; 1800 1801 CBS_init(&cbs, protos, protos_len); 1802 1803 if (protos_len > 0) { 1804 if (!tlsext_alpn_check_format(&cbs)) 1805 goto err; 1806 } 1807 1808 if (!CBS_stow(&cbs, &ssl->internal->alpn_client_proto_list, 1809 &ssl->internal->alpn_client_proto_list_len)) 1810 goto err; 1811 1812 failed = 0; 1813 1814 err: 1815 /* NOTE: Return values are the reverse of what you expect. */ 1816 return failed; 1817 } 1818 1819 /* 1820 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1821 * ClientHello processing in order to select an ALPN protocol from the 1822 * client's list of offered protocols. 1823 */ 1824 void 1825 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1826 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1827 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1828 { 1829 ctx->internal->alpn_select_cb = cb; 1830 ctx->internal->alpn_select_cb_arg = arg; 1831 } 1832 1833 /* 1834 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1835 * it sets data to point to len bytes of protocol name (not including the 1836 * leading length-prefix byte). If the server didn't respond with* a negotiated 1837 * protocol then len will be zero. 1838 */ 1839 void 1840 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1841 unsigned int *len) 1842 { 1843 *data = ssl->s3->alpn_selected; 1844 *len = ssl->s3->alpn_selected_len; 1845 } 1846 1847 void 1848 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1849 { 1850 return; 1851 } 1852 1853 int 1854 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1855 const char *label, size_t llen, const unsigned char *p, size_t plen, 1856 int use_context) 1857 { 1858 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1859 if (!use_context) { 1860 p = NULL; 1861 plen = 0; 1862 } 1863 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1864 out, olen); 1865 } 1866 1867 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1868 use_context)); 1869 } 1870 1871 static unsigned long 1872 ssl_session_hash(const SSL_SESSION *a) 1873 { 1874 unsigned long l; 1875 1876 l = (unsigned long) 1877 ((unsigned int) a->session_id[0] )| 1878 ((unsigned int) a->session_id[1]<< 8L)| 1879 ((unsigned long)a->session_id[2]<<16L)| 1880 ((unsigned long)a->session_id[3]<<24L); 1881 return (l); 1882 } 1883 1884 /* 1885 * NB: If this function (or indeed the hash function which uses a sort of 1886 * coarser function than this one) is changed, ensure 1887 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1888 * able to construct an SSL_SESSION that will collide with any existing session 1889 * with a matching session ID. 1890 */ 1891 static int 1892 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1893 { 1894 if (a->ssl_version != b->ssl_version) 1895 return (1); 1896 if (a->session_id_length != b->session_id_length) 1897 return (1); 1898 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1899 return (1); 1900 return (0); 1901 } 1902 1903 /* 1904 * These wrapper functions should remain rather than redeclaring 1905 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1906 * variable. The reason is that the functions aren't static, they're exposed via 1907 * ssl.h. 1908 */ 1909 static unsigned long 1910 ssl_session_LHASH_HASH(const void *arg) 1911 { 1912 const SSL_SESSION *a = arg; 1913 1914 return ssl_session_hash(a); 1915 } 1916 1917 static int 1918 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1919 { 1920 const SSL_SESSION *a = arg1; 1921 const SSL_SESSION *b = arg2; 1922 1923 return ssl_session_cmp(a, b); 1924 } 1925 1926 SSL_CTX * 1927 SSL_CTX_new(const SSL_METHOD *meth) 1928 { 1929 SSL_CTX *ret; 1930 1931 if (!OPENSSL_init_ssl(0, NULL)) { 1932 SSLerrorx(SSL_R_LIBRARY_BUG); 1933 return (NULL); 1934 } 1935 1936 if (meth == NULL) { 1937 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1938 return (NULL); 1939 } 1940 1941 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1942 SSLerrorx(ERR_R_MALLOC_FAILURE); 1943 return (NULL); 1944 } 1945 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1946 free(ret); 1947 SSLerrorx(ERR_R_MALLOC_FAILURE); 1948 return (NULL); 1949 } 1950 1951 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1952 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1953 goto err; 1954 } 1955 1956 ret->method = meth; 1957 ret->internal->min_tls_version = meth->min_tls_version; 1958 ret->internal->max_tls_version = meth->max_tls_version; 1959 ret->internal->min_proto_version = 0; 1960 ret->internal->max_proto_version = 0; 1961 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1962 1963 ret->cert_store = NULL; 1964 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1965 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1966 ret->internal->session_cache_head = NULL; 1967 ret->internal->session_cache_tail = NULL; 1968 1969 /* We take the system default */ 1970 ret->session_timeout = ssl_get_default_timeout(); 1971 1972 ret->internal->new_session_cb = 0; 1973 ret->internal->remove_session_cb = 0; 1974 ret->internal->get_session_cb = 0; 1975 ret->internal->generate_session_id = 0; 1976 1977 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1978 1979 ret->references = 1; 1980 ret->internal->quiet_shutdown = 0; 1981 1982 ret->internal->info_callback = NULL; 1983 1984 ret->internal->app_verify_callback = 0; 1985 ret->internal->app_verify_arg = NULL; 1986 1987 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1988 ret->internal->read_ahead = 0; 1989 ret->internal->msg_callback = 0; 1990 ret->internal->msg_callback_arg = NULL; 1991 ret->verify_mode = SSL_VERIFY_NONE; 1992 ret->sid_ctx_length = 0; 1993 ret->internal->default_verify_callback = NULL; 1994 1995 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1996 goto err; 1997 1998 ret->default_passwd_callback = 0; 1999 ret->default_passwd_callback_userdata = NULL; 2000 ret->internal->client_cert_cb = 0; 2001 ret->internal->app_gen_cookie_cb = 0; 2002 ret->internal->app_verify_cookie_cb = 0; 2003 2004 ret->internal->sessions = lh_SSL_SESSION_new(); 2005 if (ret->internal->sessions == NULL) 2006 goto err; 2007 ret->cert_store = X509_STORE_new(); 2008 if (ret->cert_store == NULL) 2009 goto err; 2010 2011 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2012 NULL, SSL_DEFAULT_CIPHER_LIST, ret->internal->cert); 2013 if (ret->cipher_list == NULL || 2014 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2015 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2016 goto err2; 2017 } 2018 2019 ret->param = X509_VERIFY_PARAM_new(); 2020 if (!ret->param) 2021 goto err; 2022 2023 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2024 goto err; 2025 2026 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2027 2028 ret->extra_certs = NULL; 2029 2030 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2031 2032 ret->internal->tlsext_servername_callback = 0; 2033 ret->internal->tlsext_servername_arg = NULL; 2034 2035 /* Setup RFC4507 ticket keys */ 2036 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2037 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2038 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2039 2040 ret->internal->tlsext_status_cb = 0; 2041 ret->internal->tlsext_status_arg = NULL; 2042 2043 #ifndef OPENSSL_NO_ENGINE 2044 ret->internal->client_cert_engine = NULL; 2045 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2046 #define eng_strx(x) #x 2047 #define eng_str(x) eng_strx(x) 2048 /* Use specific client engine automatically... ignore errors */ 2049 { 2050 ENGINE *eng; 2051 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2052 if (!eng) { 2053 ERR_clear_error(); 2054 ENGINE_load_builtin_engines(); 2055 eng = ENGINE_by_id(eng_str( 2056 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2057 } 2058 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2059 ERR_clear_error(); 2060 } 2061 #endif 2062 #endif 2063 /* 2064 * Default is to connect to non-RI servers. When RI is more widely 2065 * deployed might change this. 2066 */ 2067 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2068 2069 return (ret); 2070 err: 2071 SSLerrorx(ERR_R_MALLOC_FAILURE); 2072 err2: 2073 SSL_CTX_free(ret); 2074 return (NULL); 2075 } 2076 2077 void 2078 SSL_CTX_free(SSL_CTX *ctx) 2079 { 2080 int i; 2081 2082 if (ctx == NULL) 2083 return; 2084 2085 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2086 if (i > 0) 2087 return; 2088 2089 X509_VERIFY_PARAM_free(ctx->param); 2090 2091 /* 2092 * Free internal session cache. However: the remove_cb() may reference 2093 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2094 * after the sessions were flushed. 2095 * As the ex_data handling routines might also touch the session cache, 2096 * the most secure solution seems to be: empty (flush) the cache, then 2097 * free ex_data, then finally free the cache. 2098 * (See ticket [openssl.org #212].) 2099 */ 2100 if (ctx->internal->sessions != NULL) 2101 SSL_CTX_flush_sessions(ctx, 0); 2102 2103 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2104 2105 lh_SSL_SESSION_free(ctx->internal->sessions); 2106 2107 X509_STORE_free(ctx->cert_store); 2108 sk_SSL_CIPHER_free(ctx->cipher_list); 2109 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2110 ssl_cert_free(ctx->internal->cert); 2111 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2112 sk_X509_pop_free(ctx->extra_certs, X509_free); 2113 2114 #ifndef OPENSSL_NO_SRTP 2115 if (ctx->internal->srtp_profiles) 2116 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2117 #endif 2118 2119 #ifndef OPENSSL_NO_ENGINE 2120 ENGINE_finish(ctx->internal->client_cert_engine); 2121 #endif 2122 2123 free(ctx->internal->tlsext_ecpointformatlist); 2124 free(ctx->internal->tlsext_supportedgroups); 2125 2126 free(ctx->internal->alpn_client_proto_list); 2127 2128 free(ctx->internal); 2129 free(ctx); 2130 } 2131 2132 int 2133 SSL_CTX_up_ref(SSL_CTX *ctx) 2134 { 2135 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2136 return ((refs > 1) ? 1 : 0); 2137 } 2138 2139 pem_password_cb * 2140 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2141 { 2142 return (ctx->default_passwd_callback); 2143 } 2144 2145 void 2146 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2147 { 2148 ctx->default_passwd_callback = cb; 2149 } 2150 2151 void * 2152 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2153 { 2154 return ctx->default_passwd_callback_userdata; 2155 } 2156 2157 void 2158 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2159 { 2160 ctx->default_passwd_callback_userdata = u; 2161 } 2162 2163 void 2164 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2165 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2166 { 2167 ctx->internal->app_verify_callback = cb; 2168 ctx->internal->app_verify_arg = arg; 2169 } 2170 2171 void 2172 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2173 { 2174 ctx->verify_mode = mode; 2175 ctx->internal->default_verify_callback = cb; 2176 } 2177 2178 void 2179 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2180 { 2181 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2182 } 2183 2184 void 2185 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2186 { 2187 unsigned long mask_a, mask_k; 2188 SSL_CERT_PKEY *cpk; 2189 2190 if (c == NULL) 2191 return; 2192 2193 mask_a = SSL_aNULL | SSL_aTLS1_3; 2194 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2195 2196 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2197 c->dhe_params_auto != 0) 2198 mask_k |= SSL_kDHE; 2199 2200 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2201 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2202 /* Key usage, if present, must allow signing. */ 2203 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2204 mask_a |= SSL_aECDSA; 2205 } 2206 2207 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2208 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2209 mask_k |= SSL_kGOST; 2210 mask_a |= SSL_aGOST01; 2211 } 2212 2213 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2214 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2215 mask_a |= SSL_aRSA; 2216 mask_k |= SSL_kRSA; 2217 } 2218 2219 c->mask_k = mask_k; 2220 c->mask_a = mask_a; 2221 c->valid = 1; 2222 } 2223 2224 /* See if this handshake is using an ECC cipher suite. */ 2225 int 2226 ssl_using_ecc_cipher(SSL *s) 2227 { 2228 unsigned long alg_a, alg_k; 2229 2230 alg_a = s->s3->hs.cipher->algorithm_auth; 2231 alg_k = s->s3->hs.cipher->algorithm_mkey; 2232 2233 return s->session->tlsext_ecpointformatlist != NULL && 2234 s->session->tlsext_ecpointformatlist_length > 0 && 2235 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2236 } 2237 2238 int 2239 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2240 { 2241 const SSL_CIPHER *cs = s->s3->hs.cipher; 2242 unsigned long alg_a; 2243 2244 alg_a = cs->algorithm_auth; 2245 2246 if (alg_a & SSL_aECDSA) { 2247 /* Key usage, if present, must allow signing. */ 2248 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2249 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2250 return (0); 2251 } 2252 } 2253 2254 return (1); 2255 } 2256 2257 SSL_CERT_PKEY * 2258 ssl_get_server_send_pkey(const SSL *s) 2259 { 2260 unsigned long alg_a; 2261 SSL_CERT *c; 2262 int i; 2263 2264 c = s->cert; 2265 ssl_set_cert_masks(c, s->s3->hs.cipher); 2266 2267 alg_a = s->s3->hs.cipher->algorithm_auth; 2268 2269 if (alg_a & SSL_aECDSA) { 2270 i = SSL_PKEY_ECC; 2271 } else if (alg_a & SSL_aRSA) { 2272 i = SSL_PKEY_RSA; 2273 } else if (alg_a & SSL_aGOST01) { 2274 i = SSL_PKEY_GOST01; 2275 } else { /* if (alg_a & SSL_aNULL) */ 2276 SSLerror(s, ERR_R_INTERNAL_ERROR); 2277 return (NULL); 2278 } 2279 2280 return (c->pkeys + i); 2281 } 2282 2283 EVP_PKEY * 2284 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2285 const struct ssl_sigalg **sap) 2286 { 2287 const struct ssl_sigalg *sigalg = NULL; 2288 EVP_PKEY *pkey = NULL; 2289 unsigned long alg_a; 2290 SSL_CERT *c; 2291 int idx = -1; 2292 2293 alg_a = cipher->algorithm_auth; 2294 c = s->cert; 2295 2296 if (alg_a & SSL_aRSA) { 2297 idx = SSL_PKEY_RSA; 2298 } else if ((alg_a & SSL_aECDSA) && 2299 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2300 idx = SSL_PKEY_ECC; 2301 if (idx == -1) { 2302 SSLerror(s, ERR_R_INTERNAL_ERROR); 2303 return (NULL); 2304 } 2305 2306 pkey = c->pkeys[idx].privatekey; 2307 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2308 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2309 return (NULL); 2310 } 2311 *pmd = sigalg->md(); 2312 *sap = sigalg; 2313 2314 return (pkey); 2315 } 2316 2317 size_t 2318 ssl_dhe_params_auto_key_bits(SSL *s) 2319 { 2320 SSL_CERT_PKEY *cpk; 2321 int key_bits; 2322 2323 if (s->cert->dhe_params_auto == 2) { 2324 key_bits = 1024; 2325 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2326 key_bits = 1024; 2327 if (s->s3->hs.cipher->strength_bits == 256) 2328 key_bits = 3072; 2329 } else { 2330 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2331 return 0; 2332 if (cpk->privatekey == NULL || 2333 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2334 return 0; 2335 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2336 return 0; 2337 } 2338 2339 return key_bits; 2340 } 2341 2342 static int 2343 ssl_should_update_external_cache(SSL *s, int mode) 2344 { 2345 int cache_mode; 2346 2347 cache_mode = s->session_ctx->internal->session_cache_mode; 2348 2349 /* Don't cache if mode says not to */ 2350 if ((cache_mode & mode) == 0) 2351 return 0; 2352 2353 /* if it is not already cached, cache it */ 2354 if (!s->internal->hit) 2355 return 1; 2356 2357 /* If it's TLS 1.3, do it to match OpenSSL */ 2358 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2359 return 1; 2360 2361 return 0; 2362 } 2363 2364 static int 2365 ssl_should_update_internal_cache(SSL *s, int mode) 2366 { 2367 int cache_mode; 2368 2369 cache_mode = s->session_ctx->internal->session_cache_mode; 2370 2371 /* Don't cache if mode says not to */ 2372 if ((cache_mode & mode) == 0) 2373 return 0; 2374 2375 /* If it is already cached, don't cache it again */ 2376 if (s->internal->hit) 2377 return 0; 2378 2379 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2380 return 0; 2381 2382 /* If we are lesser than TLS 1.3, Cache it. */ 2383 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2384 return 1; 2385 2386 /* Below this we consider TLS 1.3 or later */ 2387 2388 /* If it's not a server, add it? OpenSSL does this. */ 2389 if (!s->server) 2390 return 1; 2391 2392 /* XXX if we support early data / PSK need to add */ 2393 2394 /* 2395 * If we have the remove session callback, we will want 2396 * to know about this even if it's a stateless ticket 2397 * from 1.3 so we can know when it is removed. 2398 */ 2399 if (s->session_ctx->internal->remove_session_cb != NULL) 2400 return 1; 2401 2402 /* If we have set OP_NO_TICKET, cache it. */ 2403 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2404 return 1; 2405 2406 /* Otherwise do not cache */ 2407 return 0; 2408 } 2409 2410 void 2411 ssl_update_cache(SSL *s, int mode) 2412 { 2413 int cache_mode, do_callback; 2414 2415 if (s->session->session_id_length == 0) 2416 return; 2417 2418 cache_mode = s->session_ctx->internal->session_cache_mode; 2419 do_callback = ssl_should_update_external_cache(s, mode); 2420 2421 if (ssl_should_update_internal_cache(s, mode)) { 2422 /* 2423 * XXX should we fail if the add to the internal cache 2424 * fails? OpenSSL doesn't care.. 2425 */ 2426 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2427 } 2428 2429 /* 2430 * Update the "external cache" by calling the new session 2431 * callback if present, even with TLS 1.3 without early data 2432 * "because some application just want to know about the 2433 * creation of a session and aren't doing a full cache". 2434 * Apparently, if they are doing a full cache, they'll have 2435 * some fun, but we endeavour to give application writers the 2436 * same glorious experience they expect from OpenSSL which 2437 * does it this way. 2438 */ 2439 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2440 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2441 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2442 SSL_SESSION_free(s->session); 2443 } 2444 2445 /* Auto flush every 255 connections. */ 2446 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2447 (cache_mode & mode) != 0) { 2448 int connections; 2449 if (mode & SSL_SESS_CACHE_CLIENT) 2450 connections = s->session_ctx->internal->stats.sess_connect_good; 2451 else 2452 connections = s->session_ctx->internal->stats.sess_accept_good; 2453 if ((connections & 0xff) == 0xff) 2454 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2455 } 2456 } 2457 2458 const SSL_METHOD * 2459 SSL_get_ssl_method(SSL *s) 2460 { 2461 return (s->method); 2462 } 2463 2464 int 2465 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2466 { 2467 int (*handshake_func)(SSL *) = NULL; 2468 int ret = 1; 2469 2470 if (s->method == method) 2471 return (ret); 2472 2473 if (s->internal->handshake_func == s->method->ssl_connect) 2474 handshake_func = method->ssl_connect; 2475 else if (s->internal->handshake_func == s->method->ssl_accept) 2476 handshake_func = method->ssl_accept; 2477 2478 if (s->method->version == method->version) { 2479 s->method = method; 2480 } else { 2481 s->method->ssl_free(s); 2482 s->method = method; 2483 ret = s->method->ssl_new(s); 2484 } 2485 s->internal->handshake_func = handshake_func; 2486 2487 return (ret); 2488 } 2489 2490 int 2491 SSL_get_error(const SSL *s, int i) 2492 { 2493 unsigned long l; 2494 int reason; 2495 BIO *bio; 2496 2497 if (i > 0) 2498 return (SSL_ERROR_NONE); 2499 2500 /* 2501 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2502 * etc, where we do encode the error. 2503 */ 2504 if ((l = ERR_peek_error()) != 0) { 2505 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2506 return (SSL_ERROR_SYSCALL); 2507 else 2508 return (SSL_ERROR_SSL); 2509 } 2510 2511 if (SSL_want_read(s)) { 2512 bio = SSL_get_rbio(s); 2513 if (BIO_should_read(bio)) { 2514 return (SSL_ERROR_WANT_READ); 2515 } else if (BIO_should_write(bio)) { 2516 /* 2517 * This one doesn't make too much sense... We never 2518 * try to write to the rbio, and an application 2519 * program where rbio and wbio are separate couldn't 2520 * even know what it should wait for. However if we 2521 * ever set s->internal->rwstate incorrectly (so that we have 2522 * SSL_want_read(s) instead of SSL_want_write(s)) 2523 * and rbio and wbio *are* the same, this test works 2524 * around that bug; so it might be safer to keep it. 2525 */ 2526 return (SSL_ERROR_WANT_WRITE); 2527 } else if (BIO_should_io_special(bio)) { 2528 reason = BIO_get_retry_reason(bio); 2529 if (reason == BIO_RR_CONNECT) 2530 return (SSL_ERROR_WANT_CONNECT); 2531 else if (reason == BIO_RR_ACCEPT) 2532 return (SSL_ERROR_WANT_ACCEPT); 2533 else 2534 return (SSL_ERROR_SYSCALL); /* unknown */ 2535 } 2536 } 2537 2538 if (SSL_want_write(s)) { 2539 bio = SSL_get_wbio(s); 2540 if (BIO_should_write(bio)) { 2541 return (SSL_ERROR_WANT_WRITE); 2542 } else if (BIO_should_read(bio)) { 2543 /* 2544 * See above (SSL_want_read(s) with 2545 * BIO_should_write(bio)) 2546 */ 2547 return (SSL_ERROR_WANT_READ); 2548 } else if (BIO_should_io_special(bio)) { 2549 reason = BIO_get_retry_reason(bio); 2550 if (reason == BIO_RR_CONNECT) 2551 return (SSL_ERROR_WANT_CONNECT); 2552 else if (reason == BIO_RR_ACCEPT) 2553 return (SSL_ERROR_WANT_ACCEPT); 2554 else 2555 return (SSL_ERROR_SYSCALL); 2556 } 2557 } 2558 2559 if (SSL_want_x509_lookup(s)) 2560 return (SSL_ERROR_WANT_X509_LOOKUP); 2561 2562 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2563 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2564 return (SSL_ERROR_ZERO_RETURN); 2565 2566 return (SSL_ERROR_SYSCALL); 2567 } 2568 2569 int 2570 SSL_do_handshake(SSL *s) 2571 { 2572 if (s->internal->handshake_func == NULL) { 2573 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2574 return (-1); 2575 } 2576 2577 s->method->ssl_renegotiate_check(s); 2578 2579 if (!SSL_in_init(s) && !SSL_in_before(s)) 2580 return 1; 2581 2582 return s->internal->handshake_func(s); 2583 } 2584 2585 /* 2586 * For the next 2 functions, SSL_clear() sets shutdown and so 2587 * one of these calls will reset it 2588 */ 2589 void 2590 SSL_set_accept_state(SSL *s) 2591 { 2592 s->server = 1; 2593 s->internal->shutdown = 0; 2594 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2595 s->internal->handshake_func = s->method->ssl_accept; 2596 ssl_clear_cipher_state(s); 2597 } 2598 2599 void 2600 SSL_set_connect_state(SSL *s) 2601 { 2602 s->server = 0; 2603 s->internal->shutdown = 0; 2604 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2605 s->internal->handshake_func = s->method->ssl_connect; 2606 ssl_clear_cipher_state(s); 2607 } 2608 2609 int 2610 ssl_undefined_function(SSL *s) 2611 { 2612 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2613 return (0); 2614 } 2615 2616 int 2617 ssl_undefined_void_function(void) 2618 { 2619 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2620 return (0); 2621 } 2622 2623 int 2624 ssl_undefined_const_function(const SSL *s) 2625 { 2626 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2627 return (0); 2628 } 2629 2630 const char * 2631 ssl_version_string(int ver) 2632 { 2633 switch (ver) { 2634 case TLS1_VERSION: 2635 return (SSL_TXT_TLSV1); 2636 case TLS1_1_VERSION: 2637 return (SSL_TXT_TLSV1_1); 2638 case TLS1_2_VERSION: 2639 return (SSL_TXT_TLSV1_2); 2640 case TLS1_3_VERSION: 2641 return (SSL_TXT_TLSV1_3); 2642 case DTLS1_VERSION: 2643 return (SSL_TXT_DTLS1); 2644 case DTLS1_2_VERSION: 2645 return (SSL_TXT_DTLS1_2); 2646 default: 2647 return ("unknown"); 2648 } 2649 } 2650 2651 const char * 2652 SSL_get_version(const SSL *s) 2653 { 2654 return ssl_version_string(s->version); 2655 } 2656 2657 SSL * 2658 SSL_dup(SSL *s) 2659 { 2660 STACK_OF(X509_NAME) *sk; 2661 X509_NAME *xn; 2662 SSL *ret; 2663 int i; 2664 2665 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2666 goto err; 2667 2668 ret->version = s->version; 2669 ret->method = s->method; 2670 2671 if (s->session != NULL) { 2672 if (!SSL_copy_session_id(ret, s)) 2673 goto err; 2674 } else { 2675 /* 2676 * No session has been established yet, so we have to expect 2677 * that s->cert or ret->cert will be changed later -- 2678 * they should not both point to the same object, 2679 * and thus we can't use SSL_copy_session_id. 2680 */ 2681 2682 ret->method->ssl_free(ret); 2683 ret->method = s->method; 2684 ret->method->ssl_new(ret); 2685 2686 ssl_cert_free(ret->cert); 2687 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2688 goto err; 2689 2690 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2691 s->sid_ctx_length)) 2692 goto err; 2693 } 2694 2695 ret->internal->options = s->internal->options; 2696 ret->internal->mode = s->internal->mode; 2697 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2698 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2699 ret->internal->msg_callback = s->internal->msg_callback; 2700 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2701 SSL_set_verify(ret, SSL_get_verify_mode(s), 2702 SSL_get_verify_callback(s)); 2703 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2704 ret->internal->generate_session_id = s->internal->generate_session_id; 2705 2706 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2707 2708 ret->internal->debug = s->internal->debug; 2709 2710 /* copy app data, a little dangerous perhaps */ 2711 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2712 &ret->internal->ex_data, &s->internal->ex_data)) 2713 goto err; 2714 2715 /* setup rbio, and wbio */ 2716 if (s->rbio != NULL) { 2717 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2718 goto err; 2719 } 2720 if (s->wbio != NULL) { 2721 if (s->wbio != s->rbio) { 2722 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2723 goto err; 2724 } else 2725 ret->wbio = ret->rbio; 2726 } 2727 ret->internal->rwstate = s->internal->rwstate; 2728 ret->internal->in_handshake = s->internal->in_handshake; 2729 ret->internal->handshake_func = s->internal->handshake_func; 2730 ret->server = s->server; 2731 ret->internal->renegotiate = s->internal->renegotiate; 2732 ret->internal->new_session = s->internal->new_session; 2733 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2734 ret->internal->shutdown = s->internal->shutdown; 2735 /* SSL_dup does not really work at any state, though */ 2736 ret->s3->hs.state = s->s3->hs.state; 2737 ret->internal->rstate = s->internal->rstate; 2738 2739 /* 2740 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2741 * ret->init_off 2742 */ 2743 ret->internal->init_num = 0; 2744 2745 ret->internal->hit = s->internal->hit; 2746 2747 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2748 2749 if (s->cipher_list != NULL) { 2750 if ((ret->cipher_list = 2751 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2752 goto err; 2753 } 2754 if (s->internal->cipher_list_tls13 != NULL) { 2755 if ((ret->internal->cipher_list_tls13 = 2756 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2757 goto err; 2758 } 2759 2760 /* Dup the client_CA list */ 2761 if (s->internal->client_CA != NULL) { 2762 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2763 ret->internal->client_CA = sk; 2764 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2765 xn = sk_X509_NAME_value(sk, i); 2766 if (sk_X509_NAME_set(sk, i, 2767 X509_NAME_dup(xn)) == NULL) { 2768 X509_NAME_free(xn); 2769 goto err; 2770 } 2771 } 2772 } 2773 2774 return ret; 2775 err: 2776 SSL_free(ret); 2777 return NULL; 2778 } 2779 2780 void 2781 ssl_clear_cipher_state(SSL *s) 2782 { 2783 tls12_record_layer_clear_read_state(s->internal->rl); 2784 tls12_record_layer_clear_write_state(s->internal->rl); 2785 } 2786 2787 void 2788 ssl_info_callback(const SSL *s, int type, int value) 2789 { 2790 ssl_info_callback_fn *cb; 2791 2792 if ((cb = s->internal->info_callback) == NULL) 2793 cb = s->ctx->internal->info_callback; 2794 if (cb != NULL) 2795 cb(s, type, value); 2796 } 2797 2798 void 2799 ssl_msg_callback(SSL *s, int is_write, int content_type, 2800 const void *msg_buf, size_t msg_len) 2801 { 2802 if (s->internal->msg_callback != NULL) 2803 s->internal->msg_callback(is_write, s->version, content_type, 2804 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2805 } 2806 2807 /* Fix this function so that it takes an optional type parameter */ 2808 X509 * 2809 SSL_get_certificate(const SSL *s) 2810 { 2811 return (s->cert->key->x509); 2812 } 2813 2814 /* Fix this function so that it takes an optional type parameter */ 2815 EVP_PKEY * 2816 SSL_get_privatekey(const SSL *s) 2817 { 2818 return (s->cert->key->privatekey); 2819 } 2820 2821 const SSL_CIPHER * 2822 SSL_get_current_cipher(const SSL *s) 2823 { 2824 if ((s->session != NULL) && (s->session->cipher != NULL)) 2825 return (s->session->cipher); 2826 return (NULL); 2827 } 2828 const void * 2829 SSL_get_current_compression(SSL *s) 2830 { 2831 return (NULL); 2832 } 2833 2834 const void * 2835 SSL_get_current_expansion(SSL *s) 2836 { 2837 return (NULL); 2838 } 2839 2840 size_t 2841 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2842 { 2843 size_t len = sizeof(s->s3->client_random); 2844 2845 if (out == NULL) 2846 return len; 2847 2848 if (len > max_out) 2849 len = max_out; 2850 2851 memcpy(out, s->s3->client_random, len); 2852 2853 return len; 2854 } 2855 2856 size_t 2857 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2858 { 2859 size_t len = sizeof(s->s3->server_random); 2860 2861 if (out == NULL) 2862 return len; 2863 2864 if (len > max_out) 2865 len = max_out; 2866 2867 memcpy(out, s->s3->server_random, len); 2868 2869 return len; 2870 } 2871 2872 int 2873 ssl_init_wbio_buffer(SSL *s, int push) 2874 { 2875 BIO *bbio; 2876 2877 if (s->bbio == NULL) { 2878 bbio = BIO_new(BIO_f_buffer()); 2879 if (bbio == NULL) 2880 return (0); 2881 s->bbio = bbio; 2882 } else { 2883 bbio = s->bbio; 2884 if (s->bbio == s->wbio) 2885 s->wbio = BIO_pop(s->wbio); 2886 } 2887 (void)BIO_reset(bbio); 2888 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2889 if (!BIO_set_read_buffer_size(bbio, 1)) { 2890 SSLerror(s, ERR_R_BUF_LIB); 2891 return (0); 2892 } 2893 if (push) { 2894 if (s->wbio != bbio) 2895 s->wbio = BIO_push(bbio, s->wbio); 2896 } else { 2897 if (s->wbio == bbio) 2898 s->wbio = BIO_pop(bbio); 2899 } 2900 return (1); 2901 } 2902 2903 void 2904 ssl_free_wbio_buffer(SSL *s) 2905 { 2906 if (s == NULL) 2907 return; 2908 2909 if (s->bbio == NULL) 2910 return; 2911 2912 if (s->bbio == s->wbio) { 2913 /* remove buffering */ 2914 s->wbio = BIO_pop(s->wbio); 2915 } 2916 BIO_free(s->bbio); 2917 s->bbio = NULL; 2918 } 2919 2920 void 2921 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2922 { 2923 ctx->internal->quiet_shutdown = mode; 2924 } 2925 2926 int 2927 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2928 { 2929 return (ctx->internal->quiet_shutdown); 2930 } 2931 2932 void 2933 SSL_set_quiet_shutdown(SSL *s, int mode) 2934 { 2935 s->internal->quiet_shutdown = mode; 2936 } 2937 2938 int 2939 SSL_get_quiet_shutdown(const SSL *s) 2940 { 2941 return (s->internal->quiet_shutdown); 2942 } 2943 2944 void 2945 SSL_set_shutdown(SSL *s, int mode) 2946 { 2947 s->internal->shutdown = mode; 2948 } 2949 2950 int 2951 SSL_get_shutdown(const SSL *s) 2952 { 2953 return (s->internal->shutdown); 2954 } 2955 2956 int 2957 SSL_version(const SSL *s) 2958 { 2959 return (s->version); 2960 } 2961 2962 SSL_CTX * 2963 SSL_get_SSL_CTX(const SSL *ssl) 2964 { 2965 return (ssl->ctx); 2966 } 2967 2968 SSL_CTX * 2969 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2970 { 2971 SSL_CERT *new_cert; 2972 2973 if (ctx == NULL) 2974 ctx = ssl->initial_ctx; 2975 if (ssl->ctx == ctx) 2976 return (ssl->ctx); 2977 2978 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2979 return NULL; 2980 ssl_cert_free(ssl->cert); 2981 ssl->cert = new_cert; 2982 2983 SSL_CTX_up_ref(ctx); 2984 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2985 ssl->ctx = ctx; 2986 2987 return (ssl->ctx); 2988 } 2989 2990 int 2991 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2992 { 2993 return (X509_STORE_set_default_paths(ctx->cert_store)); 2994 } 2995 2996 int 2997 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2998 const char *CApath) 2999 { 3000 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3001 } 3002 3003 int 3004 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3005 { 3006 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3007 } 3008 3009 void 3010 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3011 { 3012 ssl->internal->info_callback = cb; 3013 } 3014 3015 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3016 { 3017 return (ssl->internal->info_callback); 3018 } 3019 3020 int 3021 SSL_state(const SSL *ssl) 3022 { 3023 return (ssl->s3->hs.state); 3024 } 3025 3026 void 3027 SSL_set_state(SSL *ssl, int state) 3028 { 3029 ssl->s3->hs.state = state; 3030 } 3031 3032 void 3033 SSL_set_verify_result(SSL *ssl, long arg) 3034 { 3035 ssl->verify_result = arg; 3036 } 3037 3038 long 3039 SSL_get_verify_result(const SSL *ssl) 3040 { 3041 return (ssl->verify_result); 3042 } 3043 3044 int 3045 SSL_verify_client_post_handshake(SSL *ssl) 3046 { 3047 return 0; 3048 } 3049 3050 void 3051 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3052 { 3053 return; 3054 } 3055 3056 void 3057 SSL_set_post_handshake_auth(SSL *ssl, int val) 3058 { 3059 return; 3060 } 3061 3062 int 3063 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3064 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3065 { 3066 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3067 new_func, dup_func, free_func)); 3068 } 3069 3070 int 3071 SSL_set_ex_data(SSL *s, int idx, void *arg) 3072 { 3073 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3074 } 3075 3076 void * 3077 SSL_get_ex_data(const SSL *s, int idx) 3078 { 3079 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3080 } 3081 3082 int 3083 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3084 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3085 { 3086 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3087 new_func, dup_func, free_func)); 3088 } 3089 3090 int 3091 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3092 { 3093 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3094 } 3095 3096 void * 3097 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3098 { 3099 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3100 } 3101 3102 int 3103 ssl_ok(SSL *s) 3104 { 3105 return (1); 3106 } 3107 3108 X509_STORE * 3109 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3110 { 3111 return (ctx->cert_store); 3112 } 3113 3114 void 3115 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3116 { 3117 X509_STORE_free(ctx->cert_store); 3118 ctx->cert_store = store; 3119 } 3120 3121 X509 * 3122 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3123 { 3124 if (ctx->internal->cert == NULL) 3125 return NULL; 3126 3127 return ctx->internal->cert->key->x509; 3128 } 3129 3130 EVP_PKEY * 3131 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3132 { 3133 if (ctx->internal->cert == NULL) 3134 return NULL; 3135 3136 return ctx->internal->cert->key->privatekey; 3137 } 3138 3139 int 3140 SSL_want(const SSL *s) 3141 { 3142 return (s->internal->rwstate); 3143 } 3144 3145 void 3146 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3147 int keylength)) 3148 { 3149 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3150 } 3151 3152 void 3153 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3154 int keylength)) 3155 { 3156 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3157 } 3158 3159 void 3160 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3161 int keylength)) 3162 { 3163 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3164 } 3165 3166 void 3167 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3168 int keylength)) 3169 { 3170 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3171 } 3172 3173 void 3174 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3175 int is_export, int keylength)) 3176 { 3177 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3178 (void (*)(void))ecdh); 3179 } 3180 3181 void 3182 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3183 int keylength)) 3184 { 3185 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3186 } 3187 3188 3189 void 3190 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3191 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3192 { 3193 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3194 (void (*)(void))cb); 3195 } 3196 3197 void 3198 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3199 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3200 { 3201 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3202 } 3203 3204 void 3205 SSL_set_debug(SSL *s, int debug) 3206 { 3207 s->internal->debug = debug; 3208 } 3209 3210 int 3211 SSL_cache_hit(SSL *s) 3212 { 3213 return (s->internal->hit); 3214 } 3215 3216 int 3217 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3218 { 3219 return ctx->internal->min_proto_version; 3220 } 3221 3222 int 3223 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3224 { 3225 return ssl_version_set_min(ctx->method, version, 3226 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3227 &ctx->internal->min_proto_version); 3228 } 3229 3230 int 3231 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3232 { 3233 return ctx->internal->max_proto_version; 3234 } 3235 3236 int 3237 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3238 { 3239 return ssl_version_set_max(ctx->method, version, 3240 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3241 &ctx->internal->max_proto_version); 3242 } 3243 3244 int 3245 SSL_get_min_proto_version(SSL *ssl) 3246 { 3247 return ssl->internal->min_proto_version; 3248 } 3249 3250 int 3251 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3252 { 3253 return ssl_version_set_min(ssl->method, version, 3254 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3255 &ssl->internal->min_proto_version); 3256 } 3257 int 3258 SSL_get_max_proto_version(SSL *ssl) 3259 { 3260 return ssl->internal->max_proto_version; 3261 } 3262 3263 int 3264 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3265 { 3266 return ssl_version_set_max(ssl->method, version, 3267 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3268 &ssl->internal->max_proto_version); 3269 } 3270 3271 const SSL_METHOD * 3272 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3273 { 3274 return ctx->method; 3275 } 3276 3277 int 3278 SSL_CTX_get_security_level(const SSL_CTX *ctx) 3279 { 3280 return ctx->internal->cert->security_level; 3281 } 3282 3283 void 3284 SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3285 { 3286 ctx->internal->cert->security_level = level; 3287 } 3288 3289 int 3290 SSL_get_security_level(const SSL *ssl) 3291 { 3292 return ssl->cert->security_level; 3293 } 3294 3295 void 3296 SSL_set_security_level(SSL *ssl, int level) 3297 { 3298 ssl->cert->security_level = level; 3299 } 3300 3301 static int 3302 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3303 { 3304 SSL_CIPHER const *a = a_; 3305 SSL_CIPHER const *b = b_; 3306 return ssl_cipher_id_cmp(a, b); 3307 } 3308 3309 SSL_CIPHER * 3310 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3311 { 3312 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3313 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3314 } 3315 3316 int 3317 SSL_is_quic(const SSL *ssl) 3318 { 3319 return ssl->quic_method != NULL; 3320 } 3321 3322 int 3323 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3324 size_t params_len) 3325 { 3326 freezero(ssl->internal->quic_transport_params, 3327 ssl->internal->quic_transport_params_len); 3328 ssl->internal->quic_transport_params = NULL; 3329 ssl->internal->quic_transport_params_len = 0; 3330 3331 if ((ssl->internal->quic_transport_params = malloc(params_len)) == NULL) 3332 return 0; 3333 3334 memcpy(ssl->internal->quic_transport_params, params, params_len); 3335 ssl->internal->quic_transport_params_len = params_len; 3336 3337 return 1; 3338 } 3339 3340 void 3341 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3342 size_t *out_params_len) 3343 { 3344 *out_params = ssl->s3->peer_quic_transport_params; 3345 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3346 } 3347