1 /* $OpenBSD: ssl_lib.c,v 1.296 2022/07/17 14:49:01 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 ctx->internal->cert); 231 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 232 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 233 return (0); 234 } 235 return (1); 236 } 237 238 SSL * 239 SSL_new(SSL_CTX *ctx) 240 { 241 SSL *s; 242 243 if (ctx == NULL) { 244 SSLerrorx(SSL_R_NULL_SSL_CTX); 245 return (NULL); 246 } 247 if (ctx->method == NULL) { 248 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 249 return (NULL); 250 } 251 252 if ((s = calloc(1, sizeof(*s))) == NULL) 253 goto err; 254 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 255 goto err; 256 257 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 258 goto err; 259 260 s->internal->min_tls_version = ctx->internal->min_tls_version; 261 s->internal->max_tls_version = ctx->internal->max_tls_version; 262 s->internal->min_proto_version = ctx->internal->min_proto_version; 263 s->internal->max_proto_version = ctx->internal->max_proto_version; 264 265 s->internal->options = ctx->internal->options; 266 s->internal->mode = ctx->internal->mode; 267 s->internal->max_cert_list = ctx->internal->max_cert_list; 268 s->internal->num_tickets = ctx->internal->num_tickets; 269 270 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 271 goto err; 272 273 s->internal->read_ahead = ctx->internal->read_ahead; 274 s->internal->msg_callback = ctx->internal->msg_callback; 275 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 276 s->verify_mode = ctx->verify_mode; 277 s->sid_ctx_length = ctx->sid_ctx_length; 278 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 279 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 280 s->internal->verify_callback = ctx->internal->default_verify_callback; 281 s->internal->generate_session_id = ctx->internal->generate_session_id; 282 283 s->param = X509_VERIFY_PARAM_new(); 284 if (!s->param) 285 goto err; 286 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 287 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 288 s->max_send_fragment = ctx->internal->max_send_fragment; 289 290 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 291 s->ctx = ctx; 292 s->internal->tlsext_debug_cb = 0; 293 s->internal->tlsext_debug_arg = NULL; 294 s->internal->tlsext_ticket_expected = 0; 295 s->tlsext_status_type = -1; 296 s->internal->tlsext_status_expected = 0; 297 s->internal->tlsext_ocsp_ids = NULL; 298 s->internal->tlsext_ocsp_exts = NULL; 299 s->internal->tlsext_ocsp_resp = NULL; 300 s->internal->tlsext_ocsp_resp_len = 0; 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->initial_ctx = ctx; 303 304 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 305 s->internal->tlsext_ecpointformatlist = 306 calloc(ctx->internal->tlsext_ecpointformatlist_length, 307 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 308 if (s->internal->tlsext_ecpointformatlist == NULL) 309 goto err; 310 memcpy(s->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist, 312 ctx->internal->tlsext_ecpointformatlist_length * 313 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 314 s->internal->tlsext_ecpointformatlist_length = 315 ctx->internal->tlsext_ecpointformatlist_length; 316 } 317 if (ctx->internal->tlsext_supportedgroups != NULL) { 318 s->internal->tlsext_supportedgroups = 319 calloc(ctx->internal->tlsext_supportedgroups_length, 320 sizeof(ctx->internal->tlsext_supportedgroups[0])); 321 if (s->internal->tlsext_supportedgroups == NULL) 322 goto err; 323 memcpy(s->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups, 325 ctx->internal->tlsext_supportedgroups_length * 326 sizeof(ctx->internal->tlsext_supportedgroups[0])); 327 s->internal->tlsext_supportedgroups_length = 328 ctx->internal->tlsext_supportedgroups_length; 329 } 330 331 if (s->ctx->internal->alpn_client_proto_list != NULL) { 332 s->internal->alpn_client_proto_list = 333 malloc(s->ctx->internal->alpn_client_proto_list_len); 334 if (s->internal->alpn_client_proto_list == NULL) 335 goto err; 336 memcpy(s->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list, 338 s->ctx->internal->alpn_client_proto_list_len); 339 s->internal->alpn_client_proto_list_len = 340 s->ctx->internal->alpn_client_proto_list_len; 341 } 342 343 s->verify_result = X509_V_OK; 344 345 s->method = ctx->method; 346 347 if (!s->method->ssl_new(s)) 348 goto err; 349 350 s->references = 1; 351 s->server = ctx->method->server; 352 353 SSL_clear(s); 354 355 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 356 357 return (s); 358 359 err: 360 SSL_free(s); 361 SSLerrorx(ERR_R_MALLOC_FAILURE); 362 return (NULL); 363 } 364 365 int 366 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 367 unsigned int sid_ctx_len) 368 { 369 if (sid_ctx_len > sizeof ctx->sid_ctx) { 370 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 371 return (0); 372 } 373 ctx->sid_ctx_length = sid_ctx_len; 374 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 375 376 return (1); 377 } 378 379 int 380 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 381 unsigned int sid_ctx_len) 382 { 383 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 384 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 385 return (0); 386 } 387 ssl->sid_ctx_length = sid_ctx_len; 388 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 389 390 return (1); 391 } 392 393 int 394 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 395 { 396 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 397 ctx->internal->generate_session_id = cb; 398 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 399 return (1); 400 } 401 402 int 403 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 404 { 405 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 406 ssl->internal->generate_session_id = cb; 407 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 408 return (1); 409 } 410 411 int 412 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 413 unsigned int id_len) 414 { 415 /* 416 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 417 * shows how we can "construct" a session to give us the desired 418 * check - ie. to find if there's a session in the hash table 419 * that would conflict with any new session built out of this 420 * id/id_len and the ssl_version in use by this SSL. 421 */ 422 SSL_SESSION r, *p; 423 424 if (id_len > sizeof r.session_id) 425 return (0); 426 427 r.ssl_version = ssl->version; 428 r.session_id_length = id_len; 429 memcpy(r.session_id, id, id_len); 430 431 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 432 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 433 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 434 return (p != NULL); 435 } 436 437 int 438 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 439 { 440 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 441 } 442 443 int 444 SSL_set_purpose(SSL *s, int purpose) 445 { 446 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 447 } 448 449 int 450 SSL_CTX_set_trust(SSL_CTX *s, int trust) 451 { 452 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 453 } 454 455 int 456 SSL_set_trust(SSL *s, int trust) 457 { 458 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 459 } 460 461 int 462 SSL_set1_host(SSL *s, const char *hostname) 463 { 464 struct in_addr ina; 465 struct in6_addr in6a; 466 467 if (hostname != NULL && *hostname != '\0' && 468 (inet_pton(AF_INET, hostname, &ina) == 1 || 469 inet_pton(AF_INET6, hostname, &in6a) == 1)) 470 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 471 else 472 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 473 } 474 475 void 476 SSL_set_hostflags(SSL *s, unsigned int flags) 477 { 478 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 479 } 480 481 const char * 482 SSL_get0_peername(SSL *s) 483 { 484 return X509_VERIFY_PARAM_get0_peername(s->param); 485 } 486 487 X509_VERIFY_PARAM * 488 SSL_CTX_get0_param(SSL_CTX *ctx) 489 { 490 return (ctx->param); 491 } 492 493 int 494 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 495 { 496 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 497 } 498 499 X509_VERIFY_PARAM * 500 SSL_get0_param(SSL *ssl) 501 { 502 return (ssl->param); 503 } 504 505 int 506 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 507 { 508 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 509 } 510 511 void 512 SSL_free(SSL *s) 513 { 514 int i; 515 516 if (s == NULL) 517 return; 518 519 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 520 if (i > 0) 521 return; 522 523 X509_VERIFY_PARAM_free(s->param); 524 525 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 526 527 if (s->bbio != NULL) { 528 /* If the buffering BIO is in place, pop it off */ 529 if (s->bbio == s->wbio) { 530 s->wbio = BIO_pop(s->wbio); 531 } 532 BIO_free(s->bbio); 533 s->bbio = NULL; 534 } 535 536 if (s->rbio != s->wbio) 537 BIO_free_all(s->rbio); 538 BIO_free_all(s->wbio); 539 540 tls13_ctx_free(s->internal->tls13); 541 542 ssl3_release_init_buffer(s); 543 544 sk_SSL_CIPHER_free(s->cipher_list); 545 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 546 547 /* Make the next call work :-) */ 548 if (s->session != NULL) { 549 ssl_clear_bad_session(s); 550 SSL_SESSION_free(s->session); 551 } 552 553 ssl_clear_cipher_state(s); 554 555 ssl_cert_free(s->cert); 556 557 free(s->tlsext_hostname); 558 SSL_CTX_free(s->initial_ctx); 559 560 free(s->internal->tlsext_ecpointformatlist); 561 free(s->internal->tlsext_supportedgroups); 562 563 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 564 X509_EXTENSION_free); 565 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 566 free(s->internal->tlsext_ocsp_resp); 567 568 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 569 570 if (s->method != NULL) 571 s->method->ssl_free(s); 572 573 SSL_CTX_free(s->ctx); 574 575 free(s->internal->alpn_client_proto_list); 576 577 free(s->internal->quic_transport_params); 578 579 #ifndef OPENSSL_NO_SRTP 580 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 581 #endif 582 583 tls12_record_layer_free(s->internal->rl); 584 585 free(s->internal); 586 free(s); 587 } 588 589 int 590 SSL_up_ref(SSL *s) 591 { 592 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 593 return (refs > 1) ? 1 : 0; 594 } 595 596 void 597 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 598 { 599 /* If the output buffering BIO is still in place, remove it */ 600 if (s->bbio != NULL) { 601 if (s->wbio == s->bbio) { 602 s->wbio = BIO_next(s->wbio); 603 BIO_set_next(s->bbio, NULL); 604 } 605 } 606 607 if (s->rbio != rbio && s->rbio != s->wbio) 608 BIO_free_all(s->rbio); 609 if (s->wbio != wbio) 610 BIO_free_all(s->wbio); 611 s->rbio = rbio; 612 s->wbio = wbio; 613 } 614 615 BIO * 616 SSL_get_rbio(const SSL *s) 617 { 618 return (s->rbio); 619 } 620 621 void 622 SSL_set0_rbio(SSL *s, BIO *rbio) 623 { 624 BIO_free_all(s->rbio); 625 s->rbio = rbio; 626 } 627 628 BIO * 629 SSL_get_wbio(const SSL *s) 630 { 631 return (s->wbio); 632 } 633 634 int 635 SSL_get_fd(const SSL *s) 636 { 637 return (SSL_get_rfd(s)); 638 } 639 640 int 641 SSL_get_rfd(const SSL *s) 642 { 643 int ret = -1; 644 BIO *b, *r; 645 646 b = SSL_get_rbio(s); 647 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 648 if (r != NULL) 649 BIO_get_fd(r, &ret); 650 return (ret); 651 } 652 653 int 654 SSL_get_wfd(const SSL *s) 655 { 656 int ret = -1; 657 BIO *b, *r; 658 659 b = SSL_get_wbio(s); 660 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 661 if (r != NULL) 662 BIO_get_fd(r, &ret); 663 return (ret); 664 } 665 666 int 667 SSL_set_fd(SSL *s, int fd) 668 { 669 int ret = 0; 670 BIO *bio = NULL; 671 672 bio = BIO_new(BIO_s_socket()); 673 674 if (bio == NULL) { 675 SSLerror(s, ERR_R_BUF_LIB); 676 goto err; 677 } 678 BIO_set_fd(bio, fd, BIO_NOCLOSE); 679 SSL_set_bio(s, bio, bio); 680 ret = 1; 681 err: 682 return (ret); 683 } 684 685 int 686 SSL_set_wfd(SSL *s, int fd) 687 { 688 int ret = 0; 689 BIO *bio = NULL; 690 691 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 692 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 693 bio = BIO_new(BIO_s_socket()); 694 695 if (bio == NULL) { 696 SSLerror(s, ERR_R_BUF_LIB); 697 goto err; 698 } 699 BIO_set_fd(bio, fd, BIO_NOCLOSE); 700 SSL_set_bio(s, SSL_get_rbio(s), bio); 701 } else 702 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 703 ret = 1; 704 err: 705 return (ret); 706 } 707 708 int 709 SSL_set_rfd(SSL *s, int fd) 710 { 711 int ret = 0; 712 BIO *bio = NULL; 713 714 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 715 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 716 bio = BIO_new(BIO_s_socket()); 717 718 if (bio == NULL) { 719 SSLerror(s, ERR_R_BUF_LIB); 720 goto err; 721 } 722 BIO_set_fd(bio, fd, BIO_NOCLOSE); 723 SSL_set_bio(s, bio, SSL_get_wbio(s)); 724 } else 725 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 726 ret = 1; 727 err: 728 return (ret); 729 } 730 731 732 /* return length of latest Finished message we sent, copy to 'buf' */ 733 size_t 734 SSL_get_finished(const SSL *s, void *buf, size_t count) 735 { 736 size_t ret; 737 738 ret = s->s3->hs.finished_len; 739 if (count > ret) 740 count = ret; 741 memcpy(buf, s->s3->hs.finished, count); 742 return (ret); 743 } 744 745 /* return length of latest Finished message we expected, copy to 'buf' */ 746 size_t 747 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 748 { 749 size_t ret; 750 751 ret = s->s3->hs.peer_finished_len; 752 if (count > ret) 753 count = ret; 754 memcpy(buf, s->s3->hs.peer_finished, count); 755 return (ret); 756 } 757 758 759 int 760 SSL_get_verify_mode(const SSL *s) 761 { 762 return (s->verify_mode); 763 } 764 765 int 766 SSL_get_verify_depth(const SSL *s) 767 { 768 return (X509_VERIFY_PARAM_get_depth(s->param)); 769 } 770 771 int 772 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 773 { 774 return (s->internal->verify_callback); 775 } 776 777 void 778 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 779 { 780 ctx->internal->keylog_callback = cb; 781 } 782 783 SSL_CTX_keylog_cb_func 784 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 785 { 786 return (ctx->internal->keylog_callback); 787 } 788 789 int 790 SSL_set_num_tickets(SSL *s, size_t num_tickets) 791 { 792 s->internal->num_tickets = num_tickets; 793 794 return 1; 795 } 796 797 size_t 798 SSL_get_num_tickets(const SSL *s) 799 { 800 return s->internal->num_tickets; 801 } 802 803 int 804 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 805 { 806 ctx->internal->num_tickets = num_tickets; 807 808 return 1; 809 } 810 811 size_t 812 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 813 { 814 return ctx->internal->num_tickets; 815 } 816 817 int 818 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 819 { 820 return (ctx->verify_mode); 821 } 822 823 int 824 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 825 { 826 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 827 } 828 829 int 830 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 831 { 832 return (ctx->internal->default_verify_callback); 833 } 834 835 void 836 SSL_set_verify(SSL *s, int mode, 837 int (*callback)(int ok, X509_STORE_CTX *ctx)) 838 { 839 s->verify_mode = mode; 840 if (callback != NULL) 841 s->internal->verify_callback = callback; 842 } 843 844 void 845 SSL_set_verify_depth(SSL *s, int depth) 846 { 847 X509_VERIFY_PARAM_set_depth(s->param, depth); 848 } 849 850 void 851 SSL_set_read_ahead(SSL *s, int yes) 852 { 853 s->internal->read_ahead = yes; 854 } 855 856 int 857 SSL_get_read_ahead(const SSL *s) 858 { 859 return (s->internal->read_ahead); 860 } 861 862 int 863 SSL_pending(const SSL *s) 864 { 865 return (s->method->ssl_pending(s)); 866 } 867 868 X509 * 869 SSL_get_peer_certificate(const SSL *s) 870 { 871 X509 *cert; 872 873 if (s == NULL || s->session == NULL) 874 return NULL; 875 876 if ((cert = s->session->peer_cert) == NULL) 877 return NULL; 878 879 X509_up_ref(cert); 880 881 return cert; 882 } 883 884 STACK_OF(X509) * 885 SSL_get_peer_cert_chain(const SSL *s) 886 { 887 if (s == NULL || s->session == NULL) 888 return NULL; 889 890 /* 891 * If we are a client, cert_chain includes the peer's own 892 * certificate; if we are a server, it does not. 893 */ 894 return s->session->cert_chain; 895 } 896 897 STACK_OF(X509) * 898 SSL_get0_verified_chain(const SSL *s) 899 { 900 return s->internal->verified_chain; 901 } 902 903 /* 904 * Now in theory, since the calling process own 't' it should be safe to 905 * modify. We need to be able to read f without being hassled 906 */ 907 int 908 SSL_copy_session_id(SSL *t, const SSL *f) 909 { 910 SSL_CERT *tmp; 911 912 /* Do we need to do SSL locking? */ 913 if (!SSL_set_session(t, SSL_get_session(f))) 914 return 0; 915 916 /* What if we are set up for one protocol but want to talk another? */ 917 if (t->method != f->method) { 918 t->method->ssl_free(t); 919 t->method = f->method; 920 if (!t->method->ssl_new(t)) 921 return 0; 922 } 923 924 tmp = t->cert; 925 if (f->cert != NULL) { 926 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 927 t->cert = f->cert; 928 } else 929 t->cert = NULL; 930 ssl_cert_free(tmp); 931 932 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 933 return 0; 934 935 return 1; 936 } 937 938 /* Fix this so it checks all the valid key/cert options */ 939 int 940 SSL_CTX_check_private_key(const SSL_CTX *ctx) 941 { 942 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 943 (ctx->internal->cert->key->x509 == NULL)) { 944 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 945 return (0); 946 } 947 if (ctx->internal->cert->key->privatekey == NULL) { 948 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 949 return (0); 950 } 951 return (X509_check_private_key(ctx->internal->cert->key->x509, 952 ctx->internal->cert->key->privatekey)); 953 } 954 955 /* Fix this function so that it takes an optional type parameter */ 956 int 957 SSL_check_private_key(const SSL *ssl) 958 { 959 if (ssl == NULL) { 960 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 961 return (0); 962 } 963 if (ssl->cert == NULL) { 964 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 965 return (0); 966 } 967 if (ssl->cert->key->x509 == NULL) { 968 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 969 return (0); 970 } 971 if (ssl->cert->key->privatekey == NULL) { 972 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 973 return (0); 974 } 975 return (X509_check_private_key(ssl->cert->key->x509, 976 ssl->cert->key->privatekey)); 977 } 978 979 int 980 SSL_accept(SSL *s) 981 { 982 if (s->internal->handshake_func == NULL) 983 SSL_set_accept_state(s); /* Not properly initialized yet */ 984 985 return (s->method->ssl_accept(s)); 986 } 987 988 int 989 SSL_connect(SSL *s) 990 { 991 if (s->internal->handshake_func == NULL) 992 SSL_set_connect_state(s); /* Not properly initialized yet */ 993 994 return (s->method->ssl_connect(s)); 995 } 996 997 int 998 SSL_is_dtls(const SSL *s) 999 { 1000 return s->method->dtls; 1001 } 1002 1003 int 1004 SSL_is_server(const SSL *s) 1005 { 1006 return s->server; 1007 } 1008 1009 static long 1010 ssl_get_default_timeout() 1011 { 1012 /* 1013 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1014 * is way too long for http, the cache would over fill. 1015 */ 1016 return (2 * 60 * 60); 1017 } 1018 1019 long 1020 SSL_get_default_timeout(const SSL *s) 1021 { 1022 return (ssl_get_default_timeout()); 1023 } 1024 1025 int 1026 SSL_read(SSL *s, void *buf, int num) 1027 { 1028 if (num < 0) { 1029 SSLerror(s, SSL_R_BAD_LENGTH); 1030 return -1; 1031 } 1032 1033 if (s->internal->handshake_func == NULL) { 1034 SSLerror(s, SSL_R_UNINITIALIZED); 1035 return (-1); 1036 } 1037 1038 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1039 s->internal->rwstate = SSL_NOTHING; 1040 return (0); 1041 } 1042 return ssl3_read(s, buf, num); 1043 } 1044 1045 int 1046 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1047 { 1048 int ret; 1049 1050 /* We simply don't bother supporting enormous reads */ 1051 if (num > INT_MAX) { 1052 SSLerror(s, SSL_R_BAD_LENGTH); 1053 return 0; 1054 } 1055 1056 ret = SSL_read(s, buf, (int)num); 1057 if (ret < 0) 1058 ret = 0; 1059 *bytes_read = ret; 1060 1061 return ret > 0; 1062 } 1063 1064 int 1065 SSL_peek(SSL *s, void *buf, int num) 1066 { 1067 if (num < 0) { 1068 SSLerror(s, SSL_R_BAD_LENGTH); 1069 return -1; 1070 } 1071 1072 if (s->internal->handshake_func == NULL) { 1073 SSLerror(s, SSL_R_UNINITIALIZED); 1074 return (-1); 1075 } 1076 1077 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1078 return (0); 1079 } 1080 return ssl3_peek(s, buf, num); 1081 } 1082 1083 int 1084 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1085 { 1086 int ret; 1087 1088 /* We simply don't bother supporting enormous peeks */ 1089 if (num > INT_MAX) { 1090 SSLerror(s, SSL_R_BAD_LENGTH); 1091 return 0; 1092 } 1093 1094 ret = SSL_peek(s, buf, (int)num); 1095 if (ret < 0) 1096 ret = 0; 1097 *bytes_peeked = ret; 1098 1099 return ret > 0; 1100 } 1101 1102 int 1103 SSL_write(SSL *s, const void *buf, int num) 1104 { 1105 if (num < 0) { 1106 SSLerror(s, SSL_R_BAD_LENGTH); 1107 return -1; 1108 } 1109 1110 if (s->internal->handshake_func == NULL) { 1111 SSLerror(s, SSL_R_UNINITIALIZED); 1112 return (-1); 1113 } 1114 1115 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1116 s->internal->rwstate = SSL_NOTHING; 1117 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1118 return (-1); 1119 } 1120 return ssl3_write(s, buf, num); 1121 } 1122 1123 int 1124 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1125 { 1126 int ret; 1127 1128 /* We simply don't bother supporting enormous writes */ 1129 if (num > INT_MAX) { 1130 SSLerror(s, SSL_R_BAD_LENGTH); 1131 return 0; 1132 } 1133 1134 if (num == 0) { 1135 /* This API is special */ 1136 bytes_written = 0; 1137 return 1; 1138 } 1139 1140 ret = SSL_write(s, buf, (int)num); 1141 if (ret < 0) 1142 ret = 0; 1143 *bytes_written = ret; 1144 1145 return ret > 0; 1146 } 1147 1148 uint32_t 1149 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1150 { 1151 return 0; 1152 } 1153 1154 int 1155 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1156 { 1157 return 1; 1158 } 1159 1160 uint32_t 1161 SSL_get_max_early_data(const SSL *s) 1162 { 1163 return 0; 1164 } 1165 1166 int 1167 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1168 { 1169 return 1; 1170 } 1171 1172 int 1173 SSL_get_early_data_status(const SSL *s) 1174 { 1175 return SSL_EARLY_DATA_REJECTED; 1176 } 1177 1178 int 1179 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1180 { 1181 *readbytes = 0; 1182 1183 if (!s->server) { 1184 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1185 return SSL_READ_EARLY_DATA_ERROR; 1186 } 1187 1188 return SSL_READ_EARLY_DATA_FINISH; 1189 } 1190 1191 int 1192 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1193 { 1194 *written = 0; 1195 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1196 return 0; 1197 } 1198 1199 int 1200 SSL_shutdown(SSL *s) 1201 { 1202 /* 1203 * Note that this function behaves differently from what one might 1204 * expect. Return values are 0 for no success (yet), 1205 * 1 for success; but calling it once is usually not enough, 1206 * even if blocking I/O is used (see ssl3_shutdown). 1207 */ 1208 1209 if (s->internal->handshake_func == NULL) { 1210 SSLerror(s, SSL_R_UNINITIALIZED); 1211 return (-1); 1212 } 1213 1214 if (s != NULL && !SSL_in_init(s)) 1215 return (s->method->ssl_shutdown(s)); 1216 1217 return (1); 1218 } 1219 1220 int 1221 SSL_renegotiate(SSL *s) 1222 { 1223 if (s->internal->renegotiate == 0) 1224 s->internal->renegotiate = 1; 1225 1226 s->internal->new_session = 1; 1227 1228 return (s->method->ssl_renegotiate(s)); 1229 } 1230 1231 int 1232 SSL_renegotiate_abbreviated(SSL *s) 1233 { 1234 if (s->internal->renegotiate == 0) 1235 s->internal->renegotiate = 1; 1236 1237 s->internal->new_session = 0; 1238 1239 return (s->method->ssl_renegotiate(s)); 1240 } 1241 1242 int 1243 SSL_renegotiate_pending(SSL *s) 1244 { 1245 /* 1246 * Becomes true when negotiation is requested; 1247 * false again once a handshake has finished. 1248 */ 1249 return (s->internal->renegotiate != 0); 1250 } 1251 1252 long 1253 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1254 { 1255 long l; 1256 1257 switch (cmd) { 1258 case SSL_CTRL_GET_READ_AHEAD: 1259 return (s->internal->read_ahead); 1260 case SSL_CTRL_SET_READ_AHEAD: 1261 l = s->internal->read_ahead; 1262 s->internal->read_ahead = larg; 1263 return (l); 1264 1265 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1266 s->internal->msg_callback_arg = parg; 1267 return (1); 1268 1269 case SSL_CTRL_OPTIONS: 1270 return (s->internal->options|=larg); 1271 case SSL_CTRL_CLEAR_OPTIONS: 1272 return (s->internal->options&=~larg); 1273 case SSL_CTRL_MODE: 1274 return (s->internal->mode|=larg); 1275 case SSL_CTRL_CLEAR_MODE: 1276 return (s->internal->mode &=~larg); 1277 case SSL_CTRL_GET_MAX_CERT_LIST: 1278 return (s->internal->max_cert_list); 1279 case SSL_CTRL_SET_MAX_CERT_LIST: 1280 l = s->internal->max_cert_list; 1281 s->internal->max_cert_list = larg; 1282 return (l); 1283 case SSL_CTRL_SET_MTU: 1284 #ifndef OPENSSL_NO_DTLS1 1285 if (larg < (long)dtls1_min_mtu()) 1286 return (0); 1287 #endif 1288 if (SSL_is_dtls(s)) { 1289 s->d1->mtu = larg; 1290 return (larg); 1291 } 1292 return (0); 1293 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1294 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1295 return (0); 1296 s->max_send_fragment = larg; 1297 return (1); 1298 case SSL_CTRL_GET_RI_SUPPORT: 1299 if (s->s3) 1300 return (s->s3->send_connection_binding); 1301 else return (0); 1302 default: 1303 if (SSL_is_dtls(s)) 1304 return dtls1_ctrl(s, cmd, larg, parg); 1305 return ssl3_ctrl(s, cmd, larg, parg); 1306 } 1307 } 1308 1309 long 1310 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1311 { 1312 switch (cmd) { 1313 case SSL_CTRL_SET_MSG_CALLBACK: 1314 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1315 return (1); 1316 1317 default: 1318 return (ssl3_callback_ctrl(s, cmd, fp)); 1319 } 1320 } 1321 1322 struct lhash_st_SSL_SESSION * 1323 SSL_CTX_sessions(SSL_CTX *ctx) 1324 { 1325 return (ctx->internal->sessions); 1326 } 1327 1328 long 1329 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1330 { 1331 long l; 1332 1333 switch (cmd) { 1334 case SSL_CTRL_GET_READ_AHEAD: 1335 return (ctx->internal->read_ahead); 1336 case SSL_CTRL_SET_READ_AHEAD: 1337 l = ctx->internal->read_ahead; 1338 ctx->internal->read_ahead = larg; 1339 return (l); 1340 1341 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1342 ctx->internal->msg_callback_arg = parg; 1343 return (1); 1344 1345 case SSL_CTRL_GET_MAX_CERT_LIST: 1346 return (ctx->internal->max_cert_list); 1347 case SSL_CTRL_SET_MAX_CERT_LIST: 1348 l = ctx->internal->max_cert_list; 1349 ctx->internal->max_cert_list = larg; 1350 return (l); 1351 1352 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1353 l = ctx->internal->session_cache_size; 1354 ctx->internal->session_cache_size = larg; 1355 return (l); 1356 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1357 return (ctx->internal->session_cache_size); 1358 case SSL_CTRL_SET_SESS_CACHE_MODE: 1359 l = ctx->internal->session_cache_mode; 1360 ctx->internal->session_cache_mode = larg; 1361 return (l); 1362 case SSL_CTRL_GET_SESS_CACHE_MODE: 1363 return (ctx->internal->session_cache_mode); 1364 1365 case SSL_CTRL_SESS_NUMBER: 1366 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1367 case SSL_CTRL_SESS_CONNECT: 1368 return (ctx->internal->stats.sess_connect); 1369 case SSL_CTRL_SESS_CONNECT_GOOD: 1370 return (ctx->internal->stats.sess_connect_good); 1371 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1372 return (ctx->internal->stats.sess_connect_renegotiate); 1373 case SSL_CTRL_SESS_ACCEPT: 1374 return (ctx->internal->stats.sess_accept); 1375 case SSL_CTRL_SESS_ACCEPT_GOOD: 1376 return (ctx->internal->stats.sess_accept_good); 1377 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1378 return (ctx->internal->stats.sess_accept_renegotiate); 1379 case SSL_CTRL_SESS_HIT: 1380 return (ctx->internal->stats.sess_hit); 1381 case SSL_CTRL_SESS_CB_HIT: 1382 return (ctx->internal->stats.sess_cb_hit); 1383 case SSL_CTRL_SESS_MISSES: 1384 return (ctx->internal->stats.sess_miss); 1385 case SSL_CTRL_SESS_TIMEOUTS: 1386 return (ctx->internal->stats.sess_timeout); 1387 case SSL_CTRL_SESS_CACHE_FULL: 1388 return (ctx->internal->stats.sess_cache_full); 1389 case SSL_CTRL_OPTIONS: 1390 return (ctx->internal->options|=larg); 1391 case SSL_CTRL_CLEAR_OPTIONS: 1392 return (ctx->internal->options&=~larg); 1393 case SSL_CTRL_MODE: 1394 return (ctx->internal->mode|=larg); 1395 case SSL_CTRL_CLEAR_MODE: 1396 return (ctx->internal->mode&=~larg); 1397 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1398 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1399 return (0); 1400 ctx->internal->max_send_fragment = larg; 1401 return (1); 1402 default: 1403 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1404 } 1405 } 1406 1407 long 1408 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1409 { 1410 switch (cmd) { 1411 case SSL_CTRL_SET_MSG_CALLBACK: 1412 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1413 return (1); 1414 1415 default: 1416 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1417 } 1418 } 1419 1420 int 1421 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1422 { 1423 long l; 1424 1425 l = a->id - b->id; 1426 if (l == 0L) 1427 return (0); 1428 else 1429 return ((l > 0) ? 1:-1); 1430 } 1431 1432 STACK_OF(SSL_CIPHER) * 1433 SSL_get_ciphers(const SSL *s) 1434 { 1435 if (s == NULL) 1436 return (NULL); 1437 if (s->cipher_list != NULL) 1438 return (s->cipher_list); 1439 1440 return (s->ctx->cipher_list); 1441 } 1442 1443 STACK_OF(SSL_CIPHER) * 1444 SSL_get_client_ciphers(const SSL *s) 1445 { 1446 if (s == NULL || s->session == NULL || !s->server) 1447 return NULL; 1448 return s->session->ciphers; 1449 } 1450 1451 STACK_OF(SSL_CIPHER) * 1452 SSL_get1_supported_ciphers(SSL *s) 1453 { 1454 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1455 SSL_CIPHER *cipher; 1456 uint16_t min_vers, max_vers; 1457 int i; 1458 1459 if (s == NULL) 1460 return NULL; 1461 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1462 return NULL; 1463 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1464 return NULL; 1465 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1466 return NULL; 1467 1468 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1469 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1470 goto err; 1471 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1472 max_vers)) 1473 continue; 1474 if (!ssl_security_supported_cipher(s, cipher)) 1475 continue; 1476 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1477 goto err; 1478 } 1479 1480 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1481 return supported_ciphers; 1482 1483 err: 1484 sk_SSL_CIPHER_free(supported_ciphers); 1485 return NULL; 1486 } 1487 1488 /* See if we have any ECC cipher suites. */ 1489 int 1490 ssl_has_ecc_ciphers(SSL *s) 1491 { 1492 STACK_OF(SSL_CIPHER) *ciphers; 1493 unsigned long alg_k, alg_a; 1494 SSL_CIPHER *cipher; 1495 int i; 1496 1497 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1498 return 0; 1499 1500 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1501 cipher = sk_SSL_CIPHER_value(ciphers, i); 1502 1503 alg_k = cipher->algorithm_mkey; 1504 alg_a = cipher->algorithm_auth; 1505 1506 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1507 return 1; 1508 } 1509 1510 return 0; 1511 } 1512 1513 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1514 const char * 1515 SSL_get_cipher_list(const SSL *s, int n) 1516 { 1517 STACK_OF(SSL_CIPHER) *ciphers; 1518 const SSL_CIPHER *cipher; 1519 1520 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1521 return (NULL); 1522 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1523 return (NULL); 1524 1525 return (cipher->name); 1526 } 1527 1528 STACK_OF(SSL_CIPHER) * 1529 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1530 { 1531 if (ctx == NULL) 1532 return NULL; 1533 return ctx->cipher_list; 1534 } 1535 1536 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1537 int 1538 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1539 { 1540 STACK_OF(SSL_CIPHER) *ciphers; 1541 1542 /* 1543 * ssl_create_cipher_list may return an empty stack if it was unable to 1544 * find a cipher matching the given rule string (for example if the 1545 * rule string specifies a cipher which has been disabled). This is not 1546 * an error as far as ssl_create_cipher_list is concerned, and hence 1547 * ctx->cipher_list has been updated. 1548 */ 1549 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1550 ctx->internal->cipher_list_tls13, str, ctx->internal->cert); 1551 if (ciphers == NULL) { 1552 return (0); 1553 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1554 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1555 return (0); 1556 } 1557 return (1); 1558 } 1559 1560 int 1561 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1562 { 1563 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1564 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1565 return 0; 1566 } 1567 if (!ssl_merge_cipherlists(ctx->cipher_list, 1568 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1569 return 0; 1570 1571 return 1; 1572 } 1573 1574 /* Specify the ciphers to be used by the SSL. */ 1575 int 1576 SSL_set_cipher_list(SSL *s, const char *str) 1577 { 1578 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1579 1580 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1581 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1582 1583 /* See comment in SSL_CTX_set_cipher_list. */ 1584 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1585 ciphers_tls13, str, s->cert); 1586 if (ciphers == NULL) { 1587 return (0); 1588 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1589 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1590 return (0); 1591 } 1592 return (1); 1593 } 1594 1595 int 1596 SSL_set_ciphersuites(SSL *s, const char *str) 1597 { 1598 STACK_OF(SSL_CIPHER) *ciphers; 1599 1600 if ((ciphers = s->cipher_list) == NULL) 1601 ciphers = s->ctx->cipher_list; 1602 1603 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1604 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1605 return (0); 1606 } 1607 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1608 &s->cipher_list)) 1609 return 0; 1610 1611 return 1; 1612 } 1613 1614 char * 1615 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1616 { 1617 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1618 const SSL_CIPHER *cipher; 1619 size_t curlen = 0; 1620 char *end; 1621 int i; 1622 1623 if (!s->server || s->session == NULL || len < 2) 1624 return NULL; 1625 1626 if ((client_ciphers = s->session->ciphers) == NULL) 1627 return NULL; 1628 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1629 return NULL; 1630 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1631 sk_SSL_CIPHER_num(server_ciphers) == 0) 1632 return NULL; 1633 1634 buf[0] = '\0'; 1635 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1636 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1637 1638 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1639 continue; 1640 1641 end = buf + curlen; 1642 if (strlcat(buf, cipher->name, len) >= len || 1643 (curlen = strlcat(buf, ":", len)) >= len) { 1644 /* remove truncated cipher from list */ 1645 *end = '\0'; 1646 break; 1647 } 1648 } 1649 /* remove trailing colon */ 1650 if ((end = strrchr(buf, ':')) != NULL) 1651 *end = '\0'; 1652 return buf; 1653 } 1654 1655 /* 1656 * Return a servername extension value if provided in Client Hello, or NULL. 1657 * So far, only host_name types are defined (RFC 3546). 1658 */ 1659 const char * 1660 SSL_get_servername(const SSL *s, const int type) 1661 { 1662 if (type != TLSEXT_NAMETYPE_host_name) 1663 return (NULL); 1664 1665 return (s->session && !s->tlsext_hostname ? 1666 s->session->tlsext_hostname : 1667 s->tlsext_hostname); 1668 } 1669 1670 int 1671 SSL_get_servername_type(const SSL *s) 1672 { 1673 if (s->session && 1674 (!s->tlsext_hostname ? 1675 s->session->tlsext_hostname : s->tlsext_hostname)) 1676 return (TLSEXT_NAMETYPE_host_name); 1677 return (-1); 1678 } 1679 1680 /* 1681 * SSL_select_next_proto implements standard protocol selection. It is 1682 * expected that this function is called from the callback set by 1683 * SSL_CTX_set_alpn_select_cb. 1684 * 1685 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1686 * strings. The length byte itself is not included in the length. A byte 1687 * string of length 0 is invalid. No byte string may be truncated. 1688 * 1689 * It returns either: 1690 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1691 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1692 */ 1693 int 1694 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1695 const unsigned char *server, unsigned int server_len, 1696 const unsigned char *client, unsigned int client_len) 1697 { 1698 unsigned int i, j; 1699 const unsigned char *result; 1700 int status = OPENSSL_NPN_UNSUPPORTED; 1701 1702 /* 1703 * For each protocol in server preference order, 1704 * see if we support it. 1705 */ 1706 for (i = 0; i < server_len; ) { 1707 for (j = 0; j < client_len; ) { 1708 if (server[i] == client[j] && 1709 memcmp(&server[i + 1], 1710 &client[j + 1], server[i]) == 0) { 1711 /* We found a match */ 1712 result = &server[i]; 1713 status = OPENSSL_NPN_NEGOTIATED; 1714 goto found; 1715 } 1716 j += client[j]; 1717 j++; 1718 } 1719 i += server[i]; 1720 i++; 1721 } 1722 1723 /* There's no overlap between our protocols and the server's list. */ 1724 result = client; 1725 status = OPENSSL_NPN_NO_OVERLAP; 1726 1727 found: 1728 *out = (unsigned char *) result + 1; 1729 *outlen = result[0]; 1730 return (status); 1731 } 1732 1733 /* SSL_get0_next_proto_negotiated is deprecated. */ 1734 void 1735 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1736 unsigned int *len) 1737 { 1738 *data = NULL; 1739 *len = 0; 1740 } 1741 1742 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1743 void 1744 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1745 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1746 { 1747 } 1748 1749 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1750 void 1751 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1752 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1753 unsigned int inlen, void *arg), void *arg) 1754 { 1755 } 1756 1757 /* 1758 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1759 * protocols, which must be in wire-format (i.e. a series of non-empty, 1760 * 8-bit length-prefixed strings). Returns 0 on success. 1761 */ 1762 int 1763 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1764 unsigned int protos_len) 1765 { 1766 int failed = 1; 1767 1768 if (protos == NULL || protos_len == 0) 1769 goto err; 1770 1771 free(ctx->internal->alpn_client_proto_list); 1772 ctx->internal->alpn_client_proto_list = NULL; 1773 ctx->internal->alpn_client_proto_list_len = 0; 1774 1775 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1776 == NULL) 1777 goto err; 1778 ctx->internal->alpn_client_proto_list_len = protos_len; 1779 1780 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1781 1782 failed = 0; 1783 1784 err: 1785 /* NOTE: Return values are the reverse of what you expect. */ 1786 return (failed); 1787 } 1788 1789 /* 1790 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1791 * protocols, which must be in wire-format (i.e. a series of non-empty, 1792 * 8-bit length-prefixed strings). Returns 0 on success. 1793 */ 1794 int 1795 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1796 unsigned int protos_len) 1797 { 1798 int failed = 1; 1799 1800 if (protos == NULL || protos_len == 0) 1801 goto err; 1802 1803 free(ssl->internal->alpn_client_proto_list); 1804 ssl->internal->alpn_client_proto_list = NULL; 1805 ssl->internal->alpn_client_proto_list_len = 0; 1806 1807 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1808 == NULL) 1809 goto err; 1810 ssl->internal->alpn_client_proto_list_len = protos_len; 1811 1812 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1813 1814 failed = 0; 1815 1816 err: 1817 /* NOTE: Return values are the reverse of what you expect. */ 1818 return (failed); 1819 } 1820 1821 /* 1822 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1823 * ClientHello processing in order to select an ALPN protocol from the 1824 * client's list of offered protocols. 1825 */ 1826 void 1827 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1828 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1829 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1830 { 1831 ctx->internal->alpn_select_cb = cb; 1832 ctx->internal->alpn_select_cb_arg = arg; 1833 } 1834 1835 /* 1836 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1837 * it sets data to point to len bytes of protocol name (not including the 1838 * leading length-prefix byte). If the server didn't respond with* a negotiated 1839 * protocol then len will be zero. 1840 */ 1841 void 1842 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1843 unsigned int *len) 1844 { 1845 *data = ssl->s3->alpn_selected; 1846 *len = ssl->s3->alpn_selected_len; 1847 } 1848 1849 void 1850 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1851 { 1852 return; 1853 } 1854 1855 int 1856 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1857 const char *label, size_t llen, const unsigned char *p, size_t plen, 1858 int use_context) 1859 { 1860 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1861 if (!use_context) { 1862 p = NULL; 1863 plen = 0; 1864 } 1865 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1866 out, olen); 1867 } 1868 1869 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1870 use_context)); 1871 } 1872 1873 static unsigned long 1874 ssl_session_hash(const SSL_SESSION *a) 1875 { 1876 unsigned long l; 1877 1878 l = (unsigned long) 1879 ((unsigned int) a->session_id[0] )| 1880 ((unsigned int) a->session_id[1]<< 8L)| 1881 ((unsigned long)a->session_id[2]<<16L)| 1882 ((unsigned long)a->session_id[3]<<24L); 1883 return (l); 1884 } 1885 1886 /* 1887 * NB: If this function (or indeed the hash function which uses a sort of 1888 * coarser function than this one) is changed, ensure 1889 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1890 * able to construct an SSL_SESSION that will collide with any existing session 1891 * with a matching session ID. 1892 */ 1893 static int 1894 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1895 { 1896 if (a->ssl_version != b->ssl_version) 1897 return (1); 1898 if (a->session_id_length != b->session_id_length) 1899 return (1); 1900 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1901 return (1); 1902 return (0); 1903 } 1904 1905 /* 1906 * These wrapper functions should remain rather than redeclaring 1907 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1908 * variable. The reason is that the functions aren't static, they're exposed via 1909 * ssl.h. 1910 */ 1911 static unsigned long 1912 ssl_session_LHASH_HASH(const void *arg) 1913 { 1914 const SSL_SESSION *a = arg; 1915 1916 return ssl_session_hash(a); 1917 } 1918 1919 static int 1920 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1921 { 1922 const SSL_SESSION *a = arg1; 1923 const SSL_SESSION *b = arg2; 1924 1925 return ssl_session_cmp(a, b); 1926 } 1927 1928 SSL_CTX * 1929 SSL_CTX_new(const SSL_METHOD *meth) 1930 { 1931 SSL_CTX *ret; 1932 1933 if (!OPENSSL_init_ssl(0, NULL)) { 1934 SSLerrorx(SSL_R_LIBRARY_BUG); 1935 return (NULL); 1936 } 1937 1938 if (meth == NULL) { 1939 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1940 return (NULL); 1941 } 1942 1943 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1944 SSLerrorx(ERR_R_MALLOC_FAILURE); 1945 return (NULL); 1946 } 1947 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1948 free(ret); 1949 SSLerrorx(ERR_R_MALLOC_FAILURE); 1950 return (NULL); 1951 } 1952 1953 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1954 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1955 goto err; 1956 } 1957 1958 ret->method = meth; 1959 ret->internal->min_tls_version = meth->min_tls_version; 1960 ret->internal->max_tls_version = meth->max_tls_version; 1961 ret->internal->min_proto_version = 0; 1962 ret->internal->max_proto_version = 0; 1963 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1964 1965 ret->cert_store = NULL; 1966 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1967 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1968 ret->internal->session_cache_head = NULL; 1969 ret->internal->session_cache_tail = NULL; 1970 1971 /* We take the system default */ 1972 ret->session_timeout = ssl_get_default_timeout(); 1973 1974 ret->internal->new_session_cb = 0; 1975 ret->internal->remove_session_cb = 0; 1976 ret->internal->get_session_cb = 0; 1977 ret->internal->generate_session_id = 0; 1978 1979 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1980 1981 ret->references = 1; 1982 ret->internal->quiet_shutdown = 0; 1983 1984 ret->internal->info_callback = NULL; 1985 1986 ret->internal->app_verify_callback = 0; 1987 ret->internal->app_verify_arg = NULL; 1988 1989 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1990 ret->internal->read_ahead = 0; 1991 ret->internal->msg_callback = 0; 1992 ret->internal->msg_callback_arg = NULL; 1993 ret->verify_mode = SSL_VERIFY_NONE; 1994 ret->sid_ctx_length = 0; 1995 ret->internal->default_verify_callback = NULL; 1996 1997 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1998 goto err; 1999 2000 ret->default_passwd_callback = 0; 2001 ret->default_passwd_callback_userdata = NULL; 2002 ret->internal->client_cert_cb = 0; 2003 ret->internal->app_gen_cookie_cb = 0; 2004 ret->internal->app_verify_cookie_cb = 0; 2005 2006 ret->internal->sessions = lh_SSL_SESSION_new(); 2007 if (ret->internal->sessions == NULL) 2008 goto err; 2009 ret->cert_store = X509_STORE_new(); 2010 if (ret->cert_store == NULL) 2011 goto err; 2012 2013 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2014 NULL, SSL_DEFAULT_CIPHER_LIST, ret->internal->cert); 2015 if (ret->cipher_list == NULL || 2016 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2017 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2018 goto err2; 2019 } 2020 2021 ret->param = X509_VERIFY_PARAM_new(); 2022 if (!ret->param) 2023 goto err; 2024 2025 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2026 goto err; 2027 2028 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2029 2030 ret->extra_certs = NULL; 2031 2032 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2033 2034 ret->internal->tlsext_servername_callback = 0; 2035 ret->internal->tlsext_servername_arg = NULL; 2036 2037 /* Setup RFC4507 ticket keys */ 2038 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2039 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2040 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2041 2042 ret->internal->tlsext_status_cb = 0; 2043 ret->internal->tlsext_status_arg = NULL; 2044 2045 #ifndef OPENSSL_NO_ENGINE 2046 ret->internal->client_cert_engine = NULL; 2047 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2048 #define eng_strx(x) #x 2049 #define eng_str(x) eng_strx(x) 2050 /* Use specific client engine automatically... ignore errors */ 2051 { 2052 ENGINE *eng; 2053 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2054 if (!eng) { 2055 ERR_clear_error(); 2056 ENGINE_load_builtin_engines(); 2057 eng = ENGINE_by_id(eng_str( 2058 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2059 } 2060 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2061 ERR_clear_error(); 2062 } 2063 #endif 2064 #endif 2065 /* 2066 * Default is to connect to non-RI servers. When RI is more widely 2067 * deployed might change this. 2068 */ 2069 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2070 2071 return (ret); 2072 err: 2073 SSLerrorx(ERR_R_MALLOC_FAILURE); 2074 err2: 2075 SSL_CTX_free(ret); 2076 return (NULL); 2077 } 2078 2079 void 2080 SSL_CTX_free(SSL_CTX *ctx) 2081 { 2082 int i; 2083 2084 if (ctx == NULL) 2085 return; 2086 2087 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2088 if (i > 0) 2089 return; 2090 2091 X509_VERIFY_PARAM_free(ctx->param); 2092 2093 /* 2094 * Free internal session cache. However: the remove_cb() may reference 2095 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2096 * after the sessions were flushed. 2097 * As the ex_data handling routines might also touch the session cache, 2098 * the most secure solution seems to be: empty (flush) the cache, then 2099 * free ex_data, then finally free the cache. 2100 * (See ticket [openssl.org #212].) 2101 */ 2102 if (ctx->internal->sessions != NULL) 2103 SSL_CTX_flush_sessions(ctx, 0); 2104 2105 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2106 2107 lh_SSL_SESSION_free(ctx->internal->sessions); 2108 2109 X509_STORE_free(ctx->cert_store); 2110 sk_SSL_CIPHER_free(ctx->cipher_list); 2111 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2112 ssl_cert_free(ctx->internal->cert); 2113 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2114 sk_X509_pop_free(ctx->extra_certs, X509_free); 2115 2116 #ifndef OPENSSL_NO_SRTP 2117 if (ctx->internal->srtp_profiles) 2118 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2119 #endif 2120 2121 #ifndef OPENSSL_NO_ENGINE 2122 ENGINE_finish(ctx->internal->client_cert_engine); 2123 #endif 2124 2125 free(ctx->internal->tlsext_ecpointformatlist); 2126 free(ctx->internal->tlsext_supportedgroups); 2127 2128 free(ctx->internal->alpn_client_proto_list); 2129 2130 free(ctx->internal); 2131 free(ctx); 2132 } 2133 2134 int 2135 SSL_CTX_up_ref(SSL_CTX *ctx) 2136 { 2137 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2138 return ((refs > 1) ? 1 : 0); 2139 } 2140 2141 pem_password_cb * 2142 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2143 { 2144 return (ctx->default_passwd_callback); 2145 } 2146 2147 void 2148 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2149 { 2150 ctx->default_passwd_callback = cb; 2151 } 2152 2153 void * 2154 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2155 { 2156 return ctx->default_passwd_callback_userdata; 2157 } 2158 2159 void 2160 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2161 { 2162 ctx->default_passwd_callback_userdata = u; 2163 } 2164 2165 void 2166 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2167 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2168 { 2169 ctx->internal->app_verify_callback = cb; 2170 ctx->internal->app_verify_arg = arg; 2171 } 2172 2173 void 2174 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2175 { 2176 ctx->verify_mode = mode; 2177 ctx->internal->default_verify_callback = cb; 2178 } 2179 2180 void 2181 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2182 { 2183 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2184 } 2185 2186 void 2187 ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher) 2188 { 2189 unsigned long mask_a, mask_k; 2190 SSL_CERT_PKEY *cpk; 2191 2192 if (c == NULL) 2193 return; 2194 2195 mask_a = SSL_aNULL | SSL_aTLS1_3; 2196 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2197 2198 if (c->dhe_params != NULL || c->dhe_params_cb != NULL || 2199 c->dhe_params_auto != 0) 2200 mask_k |= SSL_kDHE; 2201 2202 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2203 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2204 /* Key usage, if present, must allow signing. */ 2205 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2206 mask_a |= SSL_aECDSA; 2207 } 2208 2209 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2210 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2211 mask_k |= SSL_kGOST; 2212 mask_a |= SSL_aGOST01; 2213 } 2214 2215 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2216 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2217 mask_a |= SSL_aRSA; 2218 mask_k |= SSL_kRSA; 2219 } 2220 2221 c->mask_k = mask_k; 2222 c->mask_a = mask_a; 2223 c->valid = 1; 2224 } 2225 2226 /* See if this handshake is using an ECC cipher suite. */ 2227 int 2228 ssl_using_ecc_cipher(SSL *s) 2229 { 2230 unsigned long alg_a, alg_k; 2231 2232 alg_a = s->s3->hs.cipher->algorithm_auth; 2233 alg_k = s->s3->hs.cipher->algorithm_mkey; 2234 2235 return s->session->tlsext_ecpointformatlist != NULL && 2236 s->session->tlsext_ecpointformatlist_length > 0 && 2237 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2238 } 2239 2240 int 2241 ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x) 2242 { 2243 const SSL_CIPHER *cs = s->s3->hs.cipher; 2244 unsigned long alg_a; 2245 2246 alg_a = cs->algorithm_auth; 2247 2248 if (alg_a & SSL_aECDSA) { 2249 /* Key usage, if present, must allow signing. */ 2250 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2251 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2252 return (0); 2253 } 2254 } 2255 2256 return (1); 2257 } 2258 2259 SSL_CERT_PKEY * 2260 ssl_get_server_send_pkey(const SSL *s) 2261 { 2262 unsigned long alg_a; 2263 SSL_CERT *c; 2264 int i; 2265 2266 c = s->cert; 2267 ssl_set_cert_masks(c, s->s3->hs.cipher); 2268 2269 alg_a = s->s3->hs.cipher->algorithm_auth; 2270 2271 if (alg_a & SSL_aECDSA) { 2272 i = SSL_PKEY_ECC; 2273 } else if (alg_a & SSL_aRSA) { 2274 i = SSL_PKEY_RSA; 2275 } else if (alg_a & SSL_aGOST01) { 2276 i = SSL_PKEY_GOST01; 2277 } else { /* if (alg_a & SSL_aNULL) */ 2278 SSLerror(s, ERR_R_INTERNAL_ERROR); 2279 return (NULL); 2280 } 2281 2282 return (c->pkeys + i); 2283 } 2284 2285 EVP_PKEY * 2286 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2287 const struct ssl_sigalg **sap) 2288 { 2289 const struct ssl_sigalg *sigalg = NULL; 2290 EVP_PKEY *pkey = NULL; 2291 unsigned long alg_a; 2292 SSL_CERT *c; 2293 int idx = -1; 2294 2295 alg_a = cipher->algorithm_auth; 2296 c = s->cert; 2297 2298 if (alg_a & SSL_aRSA) { 2299 idx = SSL_PKEY_RSA; 2300 } else if ((alg_a & SSL_aECDSA) && 2301 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2302 idx = SSL_PKEY_ECC; 2303 if (idx == -1) { 2304 SSLerror(s, ERR_R_INTERNAL_ERROR); 2305 return (NULL); 2306 } 2307 2308 pkey = c->pkeys[idx].privatekey; 2309 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2310 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2311 return (NULL); 2312 } 2313 *pmd = sigalg->md(); 2314 *sap = sigalg; 2315 2316 return (pkey); 2317 } 2318 2319 size_t 2320 ssl_dhe_params_auto_key_bits(SSL *s) 2321 { 2322 SSL_CERT_PKEY *cpk; 2323 int key_bits; 2324 2325 if (s->cert->dhe_params_auto == 2) { 2326 key_bits = 1024; 2327 } else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) { 2328 key_bits = 1024; 2329 if (s->s3->hs.cipher->strength_bits == 256) 2330 key_bits = 3072; 2331 } else { 2332 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2333 return 0; 2334 if (cpk->privatekey == NULL || 2335 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2336 return 0; 2337 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2338 return 0; 2339 } 2340 2341 return key_bits; 2342 } 2343 2344 static int 2345 ssl_should_update_external_cache(SSL *s, int mode) 2346 { 2347 int cache_mode; 2348 2349 cache_mode = s->session_ctx->internal->session_cache_mode; 2350 2351 /* Don't cache if mode says not to */ 2352 if ((cache_mode & mode) == 0) 2353 return 0; 2354 2355 /* if it is not already cached, cache it */ 2356 if (!s->internal->hit) 2357 return 1; 2358 2359 /* If it's TLS 1.3, do it to match OpenSSL */ 2360 if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION) 2361 return 1; 2362 2363 return 0; 2364 } 2365 2366 static int 2367 ssl_should_update_internal_cache(SSL *s, int mode) 2368 { 2369 int cache_mode; 2370 2371 cache_mode = s->session_ctx->internal->session_cache_mode; 2372 2373 /* Don't cache if mode says not to */ 2374 if ((cache_mode & mode) == 0) 2375 return 0; 2376 2377 /* If it is already cached, don't cache it again */ 2378 if (s->internal->hit) 2379 return 0; 2380 2381 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2382 return 0; 2383 2384 /* If we are lesser than TLS 1.3, Cache it. */ 2385 if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION) 2386 return 1; 2387 2388 /* Below this we consider TLS 1.3 or later */ 2389 2390 /* If it's not a server, add it? OpenSSL does this. */ 2391 if (!s->server) 2392 return 1; 2393 2394 /* XXX if we support early data / PSK need to add */ 2395 2396 /* 2397 * If we have the remove session callback, we will want 2398 * to know about this even if it's a stateless ticket 2399 * from 1.3 so we can know when it is removed. 2400 */ 2401 if (s->session_ctx->internal->remove_session_cb != NULL) 2402 return 1; 2403 2404 /* If we have set OP_NO_TICKET, cache it. */ 2405 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2406 return 1; 2407 2408 /* Otherwise do not cache */ 2409 return 0; 2410 } 2411 2412 void 2413 ssl_update_cache(SSL *s, int mode) 2414 { 2415 int cache_mode, do_callback; 2416 2417 if (s->session->session_id_length == 0) 2418 return; 2419 2420 cache_mode = s->session_ctx->internal->session_cache_mode; 2421 do_callback = ssl_should_update_external_cache(s, mode); 2422 2423 if (ssl_should_update_internal_cache(s, mode)) { 2424 /* 2425 * XXX should we fail if the add to the internal cache 2426 * fails? OpenSSL doesn't care.. 2427 */ 2428 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2429 } 2430 2431 /* 2432 * Update the "external cache" by calling the new session 2433 * callback if present, even with TLS 1.3 without early data 2434 * "because some application just want to know about the 2435 * creation of a session and aren't doing a full cache". 2436 * Apparently, if they are doing a full cache, they'll have 2437 * some fun, but we endeavour to give application writers the 2438 * same glorious experience they expect from OpenSSL which 2439 * does it this way. 2440 */ 2441 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2442 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2443 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2444 SSL_SESSION_free(s->session); 2445 } 2446 2447 /* Auto flush every 255 connections. */ 2448 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2449 (cache_mode & mode) != 0) { 2450 int connections; 2451 if (mode & SSL_SESS_CACHE_CLIENT) 2452 connections = s->session_ctx->internal->stats.sess_connect_good; 2453 else 2454 connections = s->session_ctx->internal->stats.sess_accept_good; 2455 if ((connections & 0xff) == 0xff) 2456 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2457 } 2458 } 2459 2460 const SSL_METHOD * 2461 SSL_get_ssl_method(SSL *s) 2462 { 2463 return (s->method); 2464 } 2465 2466 int 2467 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2468 { 2469 int (*handshake_func)(SSL *) = NULL; 2470 int ret = 1; 2471 2472 if (s->method == method) 2473 return (ret); 2474 2475 if (s->internal->handshake_func == s->method->ssl_connect) 2476 handshake_func = method->ssl_connect; 2477 else if (s->internal->handshake_func == s->method->ssl_accept) 2478 handshake_func = method->ssl_accept; 2479 2480 if (s->method->version == method->version) { 2481 s->method = method; 2482 } else { 2483 s->method->ssl_free(s); 2484 s->method = method; 2485 ret = s->method->ssl_new(s); 2486 } 2487 s->internal->handshake_func = handshake_func; 2488 2489 return (ret); 2490 } 2491 2492 int 2493 SSL_get_error(const SSL *s, int i) 2494 { 2495 unsigned long l; 2496 int reason; 2497 BIO *bio; 2498 2499 if (i > 0) 2500 return (SSL_ERROR_NONE); 2501 2502 /* 2503 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2504 * etc, where we do encode the error. 2505 */ 2506 if ((l = ERR_peek_error()) != 0) { 2507 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2508 return (SSL_ERROR_SYSCALL); 2509 else 2510 return (SSL_ERROR_SSL); 2511 } 2512 2513 if (SSL_want_read(s)) { 2514 bio = SSL_get_rbio(s); 2515 if (BIO_should_read(bio)) { 2516 return (SSL_ERROR_WANT_READ); 2517 } else if (BIO_should_write(bio)) { 2518 /* 2519 * This one doesn't make too much sense... We never 2520 * try to write to the rbio, and an application 2521 * program where rbio and wbio are separate couldn't 2522 * even know what it should wait for. However if we 2523 * ever set s->internal->rwstate incorrectly (so that we have 2524 * SSL_want_read(s) instead of SSL_want_write(s)) 2525 * and rbio and wbio *are* the same, this test works 2526 * around that bug; so it might be safer to keep it. 2527 */ 2528 return (SSL_ERROR_WANT_WRITE); 2529 } else if (BIO_should_io_special(bio)) { 2530 reason = BIO_get_retry_reason(bio); 2531 if (reason == BIO_RR_CONNECT) 2532 return (SSL_ERROR_WANT_CONNECT); 2533 else if (reason == BIO_RR_ACCEPT) 2534 return (SSL_ERROR_WANT_ACCEPT); 2535 else 2536 return (SSL_ERROR_SYSCALL); /* unknown */ 2537 } 2538 } 2539 2540 if (SSL_want_write(s)) { 2541 bio = SSL_get_wbio(s); 2542 if (BIO_should_write(bio)) { 2543 return (SSL_ERROR_WANT_WRITE); 2544 } else if (BIO_should_read(bio)) { 2545 /* 2546 * See above (SSL_want_read(s) with 2547 * BIO_should_write(bio)) 2548 */ 2549 return (SSL_ERROR_WANT_READ); 2550 } else if (BIO_should_io_special(bio)) { 2551 reason = BIO_get_retry_reason(bio); 2552 if (reason == BIO_RR_CONNECT) 2553 return (SSL_ERROR_WANT_CONNECT); 2554 else if (reason == BIO_RR_ACCEPT) 2555 return (SSL_ERROR_WANT_ACCEPT); 2556 else 2557 return (SSL_ERROR_SYSCALL); 2558 } 2559 } 2560 2561 if (SSL_want_x509_lookup(s)) 2562 return (SSL_ERROR_WANT_X509_LOOKUP); 2563 2564 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2565 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2566 return (SSL_ERROR_ZERO_RETURN); 2567 2568 return (SSL_ERROR_SYSCALL); 2569 } 2570 2571 int 2572 SSL_do_handshake(SSL *s) 2573 { 2574 if (s->internal->handshake_func == NULL) { 2575 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2576 return (-1); 2577 } 2578 2579 s->method->ssl_renegotiate_check(s); 2580 2581 if (!SSL_in_init(s) && !SSL_in_before(s)) 2582 return 1; 2583 2584 return s->internal->handshake_func(s); 2585 } 2586 2587 /* 2588 * For the next 2 functions, SSL_clear() sets shutdown and so 2589 * one of these calls will reset it 2590 */ 2591 void 2592 SSL_set_accept_state(SSL *s) 2593 { 2594 s->server = 1; 2595 s->internal->shutdown = 0; 2596 s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2597 s->internal->handshake_func = s->method->ssl_accept; 2598 ssl_clear_cipher_state(s); 2599 } 2600 2601 void 2602 SSL_set_connect_state(SSL *s) 2603 { 2604 s->server = 0; 2605 s->internal->shutdown = 0; 2606 s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2607 s->internal->handshake_func = s->method->ssl_connect; 2608 ssl_clear_cipher_state(s); 2609 } 2610 2611 int 2612 ssl_undefined_function(SSL *s) 2613 { 2614 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2615 return (0); 2616 } 2617 2618 int 2619 ssl_undefined_void_function(void) 2620 { 2621 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2622 return (0); 2623 } 2624 2625 int 2626 ssl_undefined_const_function(const SSL *s) 2627 { 2628 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2629 return (0); 2630 } 2631 2632 const char * 2633 ssl_version_string(int ver) 2634 { 2635 switch (ver) { 2636 case TLS1_VERSION: 2637 return (SSL_TXT_TLSV1); 2638 case TLS1_1_VERSION: 2639 return (SSL_TXT_TLSV1_1); 2640 case TLS1_2_VERSION: 2641 return (SSL_TXT_TLSV1_2); 2642 case TLS1_3_VERSION: 2643 return (SSL_TXT_TLSV1_3); 2644 case DTLS1_VERSION: 2645 return (SSL_TXT_DTLS1); 2646 case DTLS1_2_VERSION: 2647 return (SSL_TXT_DTLS1_2); 2648 default: 2649 return ("unknown"); 2650 } 2651 } 2652 2653 const char * 2654 SSL_get_version(const SSL *s) 2655 { 2656 return ssl_version_string(s->version); 2657 } 2658 2659 SSL * 2660 SSL_dup(SSL *s) 2661 { 2662 STACK_OF(X509_NAME) *sk; 2663 X509_NAME *xn; 2664 SSL *ret; 2665 int i; 2666 2667 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2668 goto err; 2669 2670 ret->version = s->version; 2671 ret->method = s->method; 2672 2673 if (s->session != NULL) { 2674 if (!SSL_copy_session_id(ret, s)) 2675 goto err; 2676 } else { 2677 /* 2678 * No session has been established yet, so we have to expect 2679 * that s->cert or ret->cert will be changed later -- 2680 * they should not both point to the same object, 2681 * and thus we can't use SSL_copy_session_id. 2682 */ 2683 2684 ret->method->ssl_free(ret); 2685 ret->method = s->method; 2686 ret->method->ssl_new(ret); 2687 2688 ssl_cert_free(ret->cert); 2689 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2690 goto err; 2691 2692 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2693 s->sid_ctx_length)) 2694 goto err; 2695 } 2696 2697 ret->internal->options = s->internal->options; 2698 ret->internal->mode = s->internal->mode; 2699 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2700 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2701 ret->internal->msg_callback = s->internal->msg_callback; 2702 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2703 SSL_set_verify(ret, SSL_get_verify_mode(s), 2704 SSL_get_verify_callback(s)); 2705 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2706 ret->internal->generate_session_id = s->internal->generate_session_id; 2707 2708 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2709 2710 ret->internal->debug = s->internal->debug; 2711 2712 /* copy app data, a little dangerous perhaps */ 2713 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2714 &ret->internal->ex_data, &s->internal->ex_data)) 2715 goto err; 2716 2717 /* setup rbio, and wbio */ 2718 if (s->rbio != NULL) { 2719 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2720 goto err; 2721 } 2722 if (s->wbio != NULL) { 2723 if (s->wbio != s->rbio) { 2724 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2725 goto err; 2726 } else 2727 ret->wbio = ret->rbio; 2728 } 2729 ret->internal->rwstate = s->internal->rwstate; 2730 ret->internal->in_handshake = s->internal->in_handshake; 2731 ret->internal->handshake_func = s->internal->handshake_func; 2732 ret->server = s->server; 2733 ret->internal->renegotiate = s->internal->renegotiate; 2734 ret->internal->new_session = s->internal->new_session; 2735 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2736 ret->internal->shutdown = s->internal->shutdown; 2737 /* SSL_dup does not really work at any state, though */ 2738 ret->s3->hs.state = s->s3->hs.state; 2739 ret->internal->rstate = s->internal->rstate; 2740 2741 /* 2742 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2743 * ret->init_off 2744 */ 2745 ret->internal->init_num = 0; 2746 2747 ret->internal->hit = s->internal->hit; 2748 2749 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2750 2751 if (s->cipher_list != NULL) { 2752 if ((ret->cipher_list = 2753 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2754 goto err; 2755 } 2756 if (s->internal->cipher_list_tls13 != NULL) { 2757 if ((ret->internal->cipher_list_tls13 = 2758 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2759 goto err; 2760 } 2761 2762 /* Dup the client_CA list */ 2763 if (s->internal->client_CA != NULL) { 2764 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2765 ret->internal->client_CA = sk; 2766 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2767 xn = sk_X509_NAME_value(sk, i); 2768 if (sk_X509_NAME_set(sk, i, 2769 X509_NAME_dup(xn)) == NULL) { 2770 X509_NAME_free(xn); 2771 goto err; 2772 } 2773 } 2774 } 2775 2776 return ret; 2777 err: 2778 SSL_free(ret); 2779 return NULL; 2780 } 2781 2782 void 2783 ssl_clear_cipher_state(SSL *s) 2784 { 2785 tls12_record_layer_clear_read_state(s->internal->rl); 2786 tls12_record_layer_clear_write_state(s->internal->rl); 2787 } 2788 2789 void 2790 ssl_info_callback(const SSL *s, int type, int value) 2791 { 2792 ssl_info_callback_fn *cb; 2793 2794 if ((cb = s->internal->info_callback) == NULL) 2795 cb = s->ctx->internal->info_callback; 2796 if (cb != NULL) 2797 cb(s, type, value); 2798 } 2799 2800 void 2801 ssl_msg_callback(SSL *s, int is_write, int content_type, 2802 const void *msg_buf, size_t msg_len) 2803 { 2804 if (s->internal->msg_callback != NULL) 2805 s->internal->msg_callback(is_write, s->version, content_type, 2806 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2807 } 2808 2809 /* Fix this function so that it takes an optional type parameter */ 2810 X509 * 2811 SSL_get_certificate(const SSL *s) 2812 { 2813 return (s->cert->key->x509); 2814 } 2815 2816 /* Fix this function so that it takes an optional type parameter */ 2817 EVP_PKEY * 2818 SSL_get_privatekey(const SSL *s) 2819 { 2820 return (s->cert->key->privatekey); 2821 } 2822 2823 const SSL_CIPHER * 2824 SSL_get_current_cipher(const SSL *s) 2825 { 2826 if ((s->session != NULL) && (s->session->cipher != NULL)) 2827 return (s->session->cipher); 2828 return (NULL); 2829 } 2830 const void * 2831 SSL_get_current_compression(SSL *s) 2832 { 2833 return (NULL); 2834 } 2835 2836 const void * 2837 SSL_get_current_expansion(SSL *s) 2838 { 2839 return (NULL); 2840 } 2841 2842 size_t 2843 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2844 { 2845 size_t len = sizeof(s->s3->client_random); 2846 2847 if (out == NULL) 2848 return len; 2849 2850 if (len > max_out) 2851 len = max_out; 2852 2853 memcpy(out, s->s3->client_random, len); 2854 2855 return len; 2856 } 2857 2858 size_t 2859 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2860 { 2861 size_t len = sizeof(s->s3->server_random); 2862 2863 if (out == NULL) 2864 return len; 2865 2866 if (len > max_out) 2867 len = max_out; 2868 2869 memcpy(out, s->s3->server_random, len); 2870 2871 return len; 2872 } 2873 2874 int 2875 ssl_init_wbio_buffer(SSL *s, int push) 2876 { 2877 BIO *bbio; 2878 2879 if (s->bbio == NULL) { 2880 bbio = BIO_new(BIO_f_buffer()); 2881 if (bbio == NULL) 2882 return (0); 2883 s->bbio = bbio; 2884 } else { 2885 bbio = s->bbio; 2886 if (s->bbio == s->wbio) 2887 s->wbio = BIO_pop(s->wbio); 2888 } 2889 (void)BIO_reset(bbio); 2890 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2891 if (!BIO_set_read_buffer_size(bbio, 1)) { 2892 SSLerror(s, ERR_R_BUF_LIB); 2893 return (0); 2894 } 2895 if (push) { 2896 if (s->wbio != bbio) 2897 s->wbio = BIO_push(bbio, s->wbio); 2898 } else { 2899 if (s->wbio == bbio) 2900 s->wbio = BIO_pop(bbio); 2901 } 2902 return (1); 2903 } 2904 2905 void 2906 ssl_free_wbio_buffer(SSL *s) 2907 { 2908 if (s == NULL) 2909 return; 2910 2911 if (s->bbio == NULL) 2912 return; 2913 2914 if (s->bbio == s->wbio) { 2915 /* remove buffering */ 2916 s->wbio = BIO_pop(s->wbio); 2917 } 2918 BIO_free(s->bbio); 2919 s->bbio = NULL; 2920 } 2921 2922 void 2923 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2924 { 2925 ctx->internal->quiet_shutdown = mode; 2926 } 2927 2928 int 2929 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2930 { 2931 return (ctx->internal->quiet_shutdown); 2932 } 2933 2934 void 2935 SSL_set_quiet_shutdown(SSL *s, int mode) 2936 { 2937 s->internal->quiet_shutdown = mode; 2938 } 2939 2940 int 2941 SSL_get_quiet_shutdown(const SSL *s) 2942 { 2943 return (s->internal->quiet_shutdown); 2944 } 2945 2946 void 2947 SSL_set_shutdown(SSL *s, int mode) 2948 { 2949 s->internal->shutdown = mode; 2950 } 2951 2952 int 2953 SSL_get_shutdown(const SSL *s) 2954 { 2955 return (s->internal->shutdown); 2956 } 2957 2958 int 2959 SSL_version(const SSL *s) 2960 { 2961 return (s->version); 2962 } 2963 2964 SSL_CTX * 2965 SSL_get_SSL_CTX(const SSL *ssl) 2966 { 2967 return (ssl->ctx); 2968 } 2969 2970 SSL_CTX * 2971 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2972 { 2973 SSL_CERT *new_cert; 2974 2975 if (ctx == NULL) 2976 ctx = ssl->initial_ctx; 2977 if (ssl->ctx == ctx) 2978 return (ssl->ctx); 2979 2980 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2981 return NULL; 2982 ssl_cert_free(ssl->cert); 2983 ssl->cert = new_cert; 2984 2985 SSL_CTX_up_ref(ctx); 2986 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2987 ssl->ctx = ctx; 2988 2989 return (ssl->ctx); 2990 } 2991 2992 int 2993 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2994 { 2995 return (X509_STORE_set_default_paths(ctx->cert_store)); 2996 } 2997 2998 int 2999 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3000 const char *CApath) 3001 { 3002 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3003 } 3004 3005 int 3006 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3007 { 3008 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3009 } 3010 3011 void 3012 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3013 { 3014 ssl->internal->info_callback = cb; 3015 } 3016 3017 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3018 { 3019 return (ssl->internal->info_callback); 3020 } 3021 3022 int 3023 SSL_state(const SSL *ssl) 3024 { 3025 return (ssl->s3->hs.state); 3026 } 3027 3028 void 3029 SSL_set_state(SSL *ssl, int state) 3030 { 3031 ssl->s3->hs.state = state; 3032 } 3033 3034 void 3035 SSL_set_verify_result(SSL *ssl, long arg) 3036 { 3037 ssl->verify_result = arg; 3038 } 3039 3040 long 3041 SSL_get_verify_result(const SSL *ssl) 3042 { 3043 return (ssl->verify_result); 3044 } 3045 3046 int 3047 SSL_verify_client_post_handshake(SSL *ssl) 3048 { 3049 return 0; 3050 } 3051 3052 void 3053 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3054 { 3055 return; 3056 } 3057 3058 void 3059 SSL_set_post_handshake_auth(SSL *ssl, int val) 3060 { 3061 return; 3062 } 3063 3064 int 3065 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3066 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3067 { 3068 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3069 new_func, dup_func, free_func)); 3070 } 3071 3072 int 3073 SSL_set_ex_data(SSL *s, int idx, void *arg) 3074 { 3075 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3076 } 3077 3078 void * 3079 SSL_get_ex_data(const SSL *s, int idx) 3080 { 3081 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3082 } 3083 3084 int 3085 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3086 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3087 { 3088 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3089 new_func, dup_func, free_func)); 3090 } 3091 3092 int 3093 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3094 { 3095 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3096 } 3097 3098 void * 3099 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3100 { 3101 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3102 } 3103 3104 int 3105 ssl_ok(SSL *s) 3106 { 3107 return (1); 3108 } 3109 3110 X509_STORE * 3111 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3112 { 3113 return (ctx->cert_store); 3114 } 3115 3116 void 3117 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3118 { 3119 X509_STORE_free(ctx->cert_store); 3120 ctx->cert_store = store; 3121 } 3122 3123 X509 * 3124 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3125 { 3126 if (ctx->internal->cert == NULL) 3127 return NULL; 3128 3129 return ctx->internal->cert->key->x509; 3130 } 3131 3132 EVP_PKEY * 3133 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3134 { 3135 if (ctx->internal->cert == NULL) 3136 return NULL; 3137 3138 return ctx->internal->cert->key->privatekey; 3139 } 3140 3141 int 3142 SSL_want(const SSL *s) 3143 { 3144 return (s->internal->rwstate); 3145 } 3146 3147 void 3148 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3149 int keylength)) 3150 { 3151 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3152 } 3153 3154 void 3155 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3156 int keylength)) 3157 { 3158 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3159 } 3160 3161 void 3162 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3163 int keylength)) 3164 { 3165 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3166 } 3167 3168 void 3169 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3170 int keylength)) 3171 { 3172 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3173 } 3174 3175 void 3176 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3177 int is_export, int keylength)) 3178 { 3179 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3180 (void (*)(void))ecdh); 3181 } 3182 3183 void 3184 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3185 int keylength)) 3186 { 3187 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3188 } 3189 3190 3191 void 3192 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3193 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3194 { 3195 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3196 (void (*)(void))cb); 3197 } 3198 3199 void 3200 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3201 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3202 { 3203 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3204 } 3205 3206 void 3207 SSL_set_debug(SSL *s, int debug) 3208 { 3209 s->internal->debug = debug; 3210 } 3211 3212 int 3213 SSL_cache_hit(SSL *s) 3214 { 3215 return (s->internal->hit); 3216 } 3217 3218 int 3219 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3220 { 3221 return ctx->internal->min_proto_version; 3222 } 3223 3224 int 3225 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3226 { 3227 return ssl_version_set_min(ctx->method, version, 3228 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3229 &ctx->internal->min_proto_version); 3230 } 3231 3232 int 3233 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3234 { 3235 return ctx->internal->max_proto_version; 3236 } 3237 3238 int 3239 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3240 { 3241 return ssl_version_set_max(ctx->method, version, 3242 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3243 &ctx->internal->max_proto_version); 3244 } 3245 3246 int 3247 SSL_get_min_proto_version(SSL *ssl) 3248 { 3249 return ssl->internal->min_proto_version; 3250 } 3251 3252 int 3253 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3254 { 3255 return ssl_version_set_min(ssl->method, version, 3256 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3257 &ssl->internal->min_proto_version); 3258 } 3259 int 3260 SSL_get_max_proto_version(SSL *ssl) 3261 { 3262 return ssl->internal->max_proto_version; 3263 } 3264 3265 int 3266 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3267 { 3268 return ssl_version_set_max(ssl->method, version, 3269 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3270 &ssl->internal->max_proto_version); 3271 } 3272 3273 const SSL_METHOD * 3274 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3275 { 3276 return ctx->method; 3277 } 3278 3279 int 3280 SSL_CTX_get_security_level(const SSL_CTX *ctx) 3281 { 3282 return ctx->internal->cert->security_level; 3283 } 3284 3285 void 3286 SSL_CTX_set_security_level(SSL_CTX *ctx, int level) 3287 { 3288 ctx->internal->cert->security_level = level; 3289 } 3290 3291 int 3292 SSL_get_security_level(const SSL *ssl) 3293 { 3294 return ssl->cert->security_level; 3295 } 3296 3297 void 3298 SSL_set_security_level(SSL *ssl, int level) 3299 { 3300 ssl->cert->security_level = level; 3301 } 3302 3303 static int 3304 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3305 { 3306 SSL_CIPHER const *a = a_; 3307 SSL_CIPHER const *b = b_; 3308 return ssl_cipher_id_cmp(a, b); 3309 } 3310 3311 SSL_CIPHER * 3312 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3313 { 3314 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3315 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3316 } 3317 3318 int 3319 SSL_is_quic(const SSL *ssl) 3320 { 3321 return ssl->quic_method != NULL; 3322 } 3323 3324 int 3325 SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params, 3326 size_t params_len) 3327 { 3328 freezero(ssl->internal->quic_transport_params, 3329 ssl->internal->quic_transport_params_len); 3330 ssl->internal->quic_transport_params = NULL; 3331 ssl->internal->quic_transport_params_len = 0; 3332 3333 if ((ssl->internal->quic_transport_params = malloc(params_len)) == NULL) 3334 return 0; 3335 3336 memcpy(ssl->internal->quic_transport_params, params, params_len); 3337 ssl->internal->quic_transport_params_len = params_len; 3338 3339 return 1; 3340 } 3341 3342 void 3343 SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params, 3344 size_t *out_params_len) 3345 { 3346 *out_params = ssl->s3->peer_quic_transport_params; 3347 *out_params_len = ssl->s3->peer_quic_transport_params_len; 3348 } 3349