1 /* $OpenBSD: ssl_lib.c,v 1.280 2021/12/04 14:03:22 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <limits.h> 148 #include <stdio.h> 149 150 #include <openssl/dh.h> 151 #include <openssl/lhash.h> 152 #include <openssl/objects.h> 153 #include <openssl/ocsp.h> 154 #include <openssl/opensslconf.h> 155 #include <openssl/x509v3.h> 156 157 #ifndef OPENSSL_NO_ENGINE 158 #include <openssl/engine.h> 159 #endif 160 161 #include "bytestring.h" 162 #include "dtls_locl.h" 163 #include "ssl_locl.h" 164 #include "ssl_sigalgs.h" 165 166 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 167 168 int 169 SSL_clear(SSL *s) 170 { 171 if (s->method == NULL) { 172 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 173 return (0); 174 } 175 176 if (ssl_clear_bad_session(s)) { 177 SSL_SESSION_free(s->session); 178 s->session = NULL; 179 } 180 181 s->error = 0; 182 s->internal->hit = 0; 183 s->internal->shutdown = 0; 184 185 if (s->internal->renegotiate) { 186 SSLerror(s, ERR_R_INTERNAL_ERROR); 187 return (0); 188 } 189 190 s->version = s->method->version; 191 s->client_version = s->version; 192 s->internal->rwstate = SSL_NOTHING; 193 s->internal->rstate = SSL_ST_READ_HEADER; 194 195 tls13_ctx_free(s->internal->tls13); 196 s->internal->tls13 = NULL; 197 198 ssl3_release_init_buffer(s); 199 200 ssl_clear_cipher_state(s); 201 202 s->internal->first_packet = 0; 203 204 /* 205 * Check to see if we were changed into a different method, if 206 * so, revert back if we are not doing session-id reuse. 207 */ 208 if (!s->internal->in_handshake && (s->session == NULL) && 209 (s->method != s->ctx->method)) { 210 s->method->ssl_free(s); 211 s->method = s->ctx->method; 212 if (!s->method->ssl_new(s)) 213 return (0); 214 } else 215 s->method->ssl_clear(s); 216 217 return (1); 218 } 219 220 /* Used to change an SSL_CTXs default SSL method type */ 221 int 222 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 223 { 224 STACK_OF(SSL_CIPHER) *ciphers; 225 226 ctx->method = meth; 227 228 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 229 ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST); 230 if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) { 231 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 232 return (0); 233 } 234 return (1); 235 } 236 237 SSL * 238 SSL_new(SSL_CTX *ctx) 239 { 240 SSL *s; 241 242 if (ctx == NULL) { 243 SSLerrorx(SSL_R_NULL_SSL_CTX); 244 return (NULL); 245 } 246 if (ctx->method == NULL) { 247 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 248 return (NULL); 249 } 250 251 if ((s = calloc(1, sizeof(*s))) == NULL) 252 goto err; 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) 254 goto err; 255 256 if ((s->internal->rl = tls12_record_layer_new()) == NULL) 257 goto err; 258 259 s->internal->min_tls_version = ctx->internal->min_tls_version; 260 s->internal->max_tls_version = ctx->internal->max_tls_version; 261 s->internal->min_proto_version = ctx->internal->min_proto_version; 262 s->internal->max_proto_version = ctx->internal->max_proto_version; 263 264 s->internal->options = ctx->internal->options; 265 s->internal->mode = ctx->internal->mode; 266 s->internal->max_cert_list = ctx->internal->max_cert_list; 267 s->internal->num_tickets = ctx->internal->num_tickets; 268 269 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 270 goto err; 271 272 s->internal->read_ahead = ctx->internal->read_ahead; 273 s->internal->msg_callback = ctx->internal->msg_callback; 274 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 275 s->verify_mode = ctx->verify_mode; 276 s->sid_ctx_length = ctx->sid_ctx_length; 277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 278 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 279 s->internal->verify_callback = ctx->internal->default_verify_callback; 280 s->internal->generate_session_id = ctx->internal->generate_session_id; 281 282 s->param = X509_VERIFY_PARAM_new(); 283 if (!s->param) 284 goto err; 285 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 286 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 287 s->max_send_fragment = ctx->internal->max_send_fragment; 288 289 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 290 s->ctx = ctx; 291 s->internal->tlsext_debug_cb = 0; 292 s->internal->tlsext_debug_arg = NULL; 293 s->internal->tlsext_ticket_expected = 0; 294 s->tlsext_status_type = -1; 295 s->internal->tlsext_status_expected = 0; 296 s->internal->tlsext_ocsp_ids = NULL; 297 s->internal->tlsext_ocsp_exts = NULL; 298 s->internal->tlsext_ocsp_resp = NULL; 299 s->internal->tlsext_ocsp_resp_len = 0; 300 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 301 s->initial_ctx = ctx; 302 303 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 304 s->internal->tlsext_ecpointformatlist = 305 calloc(ctx->internal->tlsext_ecpointformatlist_length, 306 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 307 if (s->internal->tlsext_ecpointformatlist == NULL) 308 goto err; 309 memcpy(s->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist_length * 312 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 313 s->internal->tlsext_ecpointformatlist_length = 314 ctx->internal->tlsext_ecpointformatlist_length; 315 } 316 if (ctx->internal->tlsext_supportedgroups != NULL) { 317 s->internal->tlsext_supportedgroups = 318 calloc(ctx->internal->tlsext_supportedgroups_length, 319 sizeof(ctx->internal->tlsext_supportedgroups[0])); 320 if (s->internal->tlsext_supportedgroups == NULL) 321 goto err; 322 memcpy(s->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups_length * 325 sizeof(ctx->internal->tlsext_supportedgroups[0])); 326 s->internal->tlsext_supportedgroups_length = 327 ctx->internal->tlsext_supportedgroups_length; 328 } 329 330 if (s->ctx->internal->alpn_client_proto_list != NULL) { 331 s->internal->alpn_client_proto_list = 332 malloc(s->ctx->internal->alpn_client_proto_list_len); 333 if (s->internal->alpn_client_proto_list == NULL) 334 goto err; 335 memcpy(s->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list_len); 338 s->internal->alpn_client_proto_list_len = 339 s->ctx->internal->alpn_client_proto_list_len; 340 } 341 342 s->verify_result = X509_V_OK; 343 344 s->method = ctx->method; 345 346 if (!s->method->ssl_new(s)) 347 goto err; 348 349 s->references = 1; 350 s->server = ctx->method->server; 351 352 SSL_clear(s); 353 354 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 355 356 return (s); 357 358 err: 359 SSL_free(s); 360 SSLerrorx(ERR_R_MALLOC_FAILURE); 361 return (NULL); 362 } 363 364 int 365 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 366 unsigned int sid_ctx_len) 367 { 368 if (sid_ctx_len > sizeof ctx->sid_ctx) { 369 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 370 return (0); 371 } 372 ctx->sid_ctx_length = sid_ctx_len; 373 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 374 375 return (1); 376 } 377 378 int 379 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381 { 382 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 383 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ssl->sid_ctx_length = sid_ctx_len; 387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390 } 391 392 int 393 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 394 { 395 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 396 ctx->internal->generate_session_id = cb; 397 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 398 return (1); 399 } 400 401 int 402 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 403 { 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 405 ssl->internal->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 407 return (1); 408 } 409 410 int 411 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 412 unsigned int id_len) 413 { 414 /* 415 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 416 * shows how we can "construct" a session to give us the desired 417 * check - ie. to find if there's a session in the hash table 418 * that would conflict with any new session built out of this 419 * id/id_len and the ssl_version in use by this SSL. 420 */ 421 SSL_SESSION r, *p; 422 423 if (id_len > sizeof r.session_id) 424 return (0); 425 426 r.ssl_version = ssl->version; 427 r.session_id_length = id_len; 428 memcpy(r.session_id, id, id_len); 429 430 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 431 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 432 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 433 return (p != NULL); 434 } 435 436 int 437 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 438 { 439 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 440 } 441 442 int 443 SSL_set_purpose(SSL *s, int purpose) 444 { 445 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 446 } 447 448 int 449 SSL_CTX_set_trust(SSL_CTX *s, int trust) 450 { 451 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 452 } 453 454 int 455 SSL_set_trust(SSL *s, int trust) 456 { 457 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 458 } 459 460 int 461 SSL_set1_host(SSL *s, const char *hostname) 462 { 463 struct in_addr ina; 464 struct in6_addr in6a; 465 466 if (hostname != NULL && *hostname != '\0' && 467 (inet_pton(AF_INET, hostname, &ina) == 1 || 468 inet_pton(AF_INET6, hostname, &in6a) == 1)) 469 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 470 else 471 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 472 } 473 474 void 475 SSL_set_hostflags(SSL *s, unsigned int flags) 476 { 477 X509_VERIFY_PARAM_set_hostflags(s->param, flags); 478 } 479 480 const char * 481 SSL_get0_peername(SSL *s) 482 { 483 return X509_VERIFY_PARAM_get0_peername(s->param); 484 } 485 486 X509_VERIFY_PARAM * 487 SSL_CTX_get0_param(SSL_CTX *ctx) 488 { 489 return (ctx->param); 490 } 491 492 int 493 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 494 { 495 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 496 } 497 498 X509_VERIFY_PARAM * 499 SSL_get0_param(SSL *ssl) 500 { 501 return (ssl->param); 502 } 503 504 int 505 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 506 { 507 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 508 } 509 510 void 511 SSL_free(SSL *s) 512 { 513 int i; 514 515 if (s == NULL) 516 return; 517 518 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 519 if (i > 0) 520 return; 521 522 X509_VERIFY_PARAM_free(s->param); 523 524 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 525 526 if (s->bbio != NULL) { 527 /* If the buffering BIO is in place, pop it off */ 528 if (s->bbio == s->wbio) { 529 s->wbio = BIO_pop(s->wbio); 530 } 531 BIO_free(s->bbio); 532 s->bbio = NULL; 533 } 534 535 if (s->rbio != s->wbio) 536 BIO_free_all(s->rbio); 537 BIO_free_all(s->wbio); 538 539 tls13_ctx_free(s->internal->tls13); 540 541 ssl3_release_init_buffer(s); 542 543 sk_SSL_CIPHER_free(s->cipher_list); 544 sk_SSL_CIPHER_free(s->internal->cipher_list_tls13); 545 546 /* Make the next call work :-) */ 547 if (s->session != NULL) { 548 ssl_clear_bad_session(s); 549 SSL_SESSION_free(s->session); 550 } 551 552 ssl_clear_cipher_state(s); 553 554 ssl_cert_free(s->cert); 555 556 free(s->tlsext_hostname); 557 SSL_CTX_free(s->initial_ctx); 558 559 free(s->internal->tlsext_ecpointformatlist); 560 free(s->internal->tlsext_supportedgroups); 561 562 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 563 X509_EXTENSION_free); 564 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 565 free(s->internal->tlsext_ocsp_resp); 566 567 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 568 569 if (s->method != NULL) 570 s->method->ssl_free(s); 571 572 SSL_CTX_free(s->ctx); 573 574 free(s->internal->alpn_client_proto_list); 575 576 #ifndef OPENSSL_NO_SRTP 577 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 578 #endif 579 580 tls12_record_layer_free(s->internal->rl); 581 582 free(s->internal); 583 free(s); 584 } 585 586 int 587 SSL_up_ref(SSL *s) 588 { 589 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 590 return (refs > 1) ? 1 : 0; 591 } 592 593 void 594 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 595 { 596 /* If the output buffering BIO is still in place, remove it */ 597 if (s->bbio != NULL) { 598 if (s->wbio == s->bbio) { 599 s->wbio = s->wbio->next_bio; 600 s->bbio->next_bio = NULL; 601 } 602 } 603 604 if (s->rbio != rbio && s->rbio != s->wbio) 605 BIO_free_all(s->rbio); 606 if (s->wbio != wbio) 607 BIO_free_all(s->wbio); 608 s->rbio = rbio; 609 s->wbio = wbio; 610 } 611 612 BIO * 613 SSL_get_rbio(const SSL *s) 614 { 615 return (s->rbio); 616 } 617 618 void 619 SSL_set0_rbio(SSL *s, BIO *rbio) 620 { 621 BIO_free_all(s->rbio); 622 s->rbio = rbio; 623 } 624 625 BIO * 626 SSL_get_wbio(const SSL *s) 627 { 628 return (s->wbio); 629 } 630 631 int 632 SSL_get_fd(const SSL *s) 633 { 634 return (SSL_get_rfd(s)); 635 } 636 637 int 638 SSL_get_rfd(const SSL *s) 639 { 640 int ret = -1; 641 BIO *b, *r; 642 643 b = SSL_get_rbio(s); 644 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 645 if (r != NULL) 646 BIO_get_fd(r, &ret); 647 return (ret); 648 } 649 650 int 651 SSL_get_wfd(const SSL *s) 652 { 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_wbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661 } 662 663 int 664 SSL_set_fd(SSL *s, int fd) 665 { 666 int ret = 0; 667 BIO *bio = NULL; 668 669 bio = BIO_new(BIO_s_socket()); 670 671 if (bio == NULL) { 672 SSLerror(s, ERR_R_BUF_LIB); 673 goto err; 674 } 675 BIO_set_fd(bio, fd, BIO_NOCLOSE); 676 SSL_set_bio(s, bio, bio); 677 ret = 1; 678 err: 679 return (ret); 680 } 681 682 int 683 SSL_set_wfd(SSL *s, int fd) 684 { 685 int ret = 0; 686 BIO *bio = NULL; 687 688 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 689 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 690 bio = BIO_new(BIO_s_socket()); 691 692 if (bio == NULL) { 693 SSLerror(s, ERR_R_BUF_LIB); 694 goto err; 695 } 696 BIO_set_fd(bio, fd, BIO_NOCLOSE); 697 SSL_set_bio(s, SSL_get_rbio(s), bio); 698 } else 699 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 700 ret = 1; 701 err: 702 return (ret); 703 } 704 705 int 706 SSL_set_rfd(SSL *s, int fd) 707 { 708 int ret = 0; 709 BIO *bio = NULL; 710 711 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 712 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 713 bio = BIO_new(BIO_s_socket()); 714 715 if (bio == NULL) { 716 SSLerror(s, ERR_R_BUF_LIB); 717 goto err; 718 } 719 BIO_set_fd(bio, fd, BIO_NOCLOSE); 720 SSL_set_bio(s, bio, SSL_get_wbio(s)); 721 } else 722 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 723 ret = 1; 724 err: 725 return (ret); 726 } 727 728 729 /* return length of latest Finished message we sent, copy to 'buf' */ 730 size_t 731 SSL_get_finished(const SSL *s, void *buf, size_t count) 732 { 733 size_t ret; 734 735 ret = S3I(s)->hs.finished_len; 736 if (count > ret) 737 count = ret; 738 memcpy(buf, S3I(s)->hs.finished, count); 739 return (ret); 740 } 741 742 /* return length of latest Finished message we expected, copy to 'buf' */ 743 size_t 744 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 745 { 746 size_t ret; 747 748 ret = S3I(s)->hs.peer_finished_len; 749 if (count > ret) 750 count = ret; 751 memcpy(buf, S3I(s)->hs.peer_finished, count); 752 return (ret); 753 } 754 755 756 int 757 SSL_get_verify_mode(const SSL *s) 758 { 759 return (s->verify_mode); 760 } 761 762 int 763 SSL_get_verify_depth(const SSL *s) 764 { 765 return (X509_VERIFY_PARAM_get_depth(s->param)); 766 } 767 768 int 769 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 770 { 771 return (s->internal->verify_callback); 772 } 773 774 void 775 SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb) 776 { 777 ctx->internal->keylog_callback = cb; 778 } 779 780 SSL_CTX_keylog_cb_func 781 SSL_CTX_get_keylog_callback(const SSL_CTX *ctx) 782 { 783 return (ctx->internal->keylog_callback); 784 } 785 786 int 787 SSL_set_num_tickets(SSL *s, size_t num_tickets) 788 { 789 s->internal->num_tickets = num_tickets; 790 791 return 1; 792 } 793 794 size_t 795 SSL_get_num_tickets(const SSL *s) 796 { 797 return s->internal->num_tickets; 798 } 799 800 int 801 SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets) 802 { 803 ctx->internal->num_tickets = num_tickets; 804 805 return 1; 806 } 807 808 size_t 809 SSL_CTX_get_num_tickets(const SSL_CTX *ctx) 810 { 811 return ctx->internal->num_tickets; 812 } 813 814 int 815 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 816 { 817 return (ctx->verify_mode); 818 } 819 820 int 821 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 822 { 823 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 824 } 825 826 int 827 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 828 { 829 return (ctx->internal->default_verify_callback); 830 } 831 832 void 833 SSL_set_verify(SSL *s, int mode, 834 int (*callback)(int ok, X509_STORE_CTX *ctx)) 835 { 836 s->verify_mode = mode; 837 if (callback != NULL) 838 s->internal->verify_callback = callback; 839 } 840 841 void 842 SSL_set_verify_depth(SSL *s, int depth) 843 { 844 X509_VERIFY_PARAM_set_depth(s->param, depth); 845 } 846 847 void 848 SSL_set_read_ahead(SSL *s, int yes) 849 { 850 s->internal->read_ahead = yes; 851 } 852 853 int 854 SSL_get_read_ahead(const SSL *s) 855 { 856 return (s->internal->read_ahead); 857 } 858 859 int 860 SSL_pending(const SSL *s) 861 { 862 return (s->method->ssl_pending(s)); 863 } 864 865 X509 * 866 SSL_get_peer_certificate(const SSL *s) 867 { 868 X509 *r; 869 870 if ((s == NULL) || (s->session == NULL)) 871 r = NULL; 872 else 873 r = s->session->peer; 874 875 if (r == NULL) 876 return (r); 877 878 X509_up_ref(r); 879 880 return (r); 881 } 882 883 STACK_OF(X509) * 884 SSL_get_peer_cert_chain(const SSL *s) 885 { 886 STACK_OF(X509) *r; 887 888 if ((s == NULL) || (s->session == NULL) || 889 (s->session->sess_cert == NULL)) 890 r = NULL; 891 else 892 r = s->session->sess_cert->cert_chain; 893 894 /* 895 * If we are a client, cert_chain includes the peer's own 896 * certificate; 897 * if we are a server, it does not. 898 */ 899 return (r); 900 } 901 902 STACK_OF(X509) * 903 SSL_get0_verified_chain(const SSL *s) 904 { 905 return s->internal->verified_chain; 906 } 907 908 /* 909 * Now in theory, since the calling process own 't' it should be safe to 910 * modify. We need to be able to read f without being hassled 911 */ 912 int 913 SSL_copy_session_id(SSL *t, const SSL *f) 914 { 915 CERT *tmp; 916 917 /* Do we need to do SSL locking? */ 918 if (!SSL_set_session(t, SSL_get_session(f))) 919 return 0; 920 921 /* What if we are set up for one protocol but want to talk another? */ 922 if (t->method != f->method) { 923 t->method->ssl_free(t); 924 t->method = f->method; 925 if (!t->method->ssl_new(t)) 926 return 0; 927 } 928 929 tmp = t->cert; 930 if (f->cert != NULL) { 931 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 932 t->cert = f->cert; 933 } else 934 t->cert = NULL; 935 ssl_cert_free(tmp); 936 937 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 938 return 0; 939 940 return 1; 941 } 942 943 /* Fix this so it checks all the valid key/cert options */ 944 int 945 SSL_CTX_check_private_key(const SSL_CTX *ctx) 946 { 947 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 948 (ctx->internal->cert->key->x509 == NULL)) { 949 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 950 return (0); 951 } 952 if (ctx->internal->cert->key->privatekey == NULL) { 953 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 954 return (0); 955 } 956 return (X509_check_private_key(ctx->internal->cert->key->x509, 957 ctx->internal->cert->key->privatekey)); 958 } 959 960 /* Fix this function so that it takes an optional type parameter */ 961 int 962 SSL_check_private_key(const SSL *ssl) 963 { 964 if (ssl == NULL) { 965 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 966 return (0); 967 } 968 if (ssl->cert == NULL) { 969 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 970 return (0); 971 } 972 if (ssl->cert->key->x509 == NULL) { 973 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 974 return (0); 975 } 976 if (ssl->cert->key->privatekey == NULL) { 977 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 978 return (0); 979 } 980 return (X509_check_private_key(ssl->cert->key->x509, 981 ssl->cert->key->privatekey)); 982 } 983 984 int 985 SSL_accept(SSL *s) 986 { 987 if (s->internal->handshake_func == NULL) 988 SSL_set_accept_state(s); /* Not properly initialized yet */ 989 990 return (s->method->ssl_accept(s)); 991 } 992 993 int 994 SSL_connect(SSL *s) 995 { 996 if (s->internal->handshake_func == NULL) 997 SSL_set_connect_state(s); /* Not properly initialized yet */ 998 999 return (s->method->ssl_connect(s)); 1000 } 1001 1002 int 1003 SSL_is_dtls(const SSL *s) 1004 { 1005 return s->method->dtls; 1006 } 1007 1008 int 1009 SSL_is_server(const SSL *s) 1010 { 1011 return s->server; 1012 } 1013 1014 static long 1015 ssl_get_default_timeout() 1016 { 1017 /* 1018 * 2 hours, the 24 hours mentioned in the TLSv1 spec 1019 * is way too long for http, the cache would over fill. 1020 */ 1021 return (2 * 60 * 60); 1022 } 1023 1024 long 1025 SSL_get_default_timeout(const SSL *s) 1026 { 1027 return (ssl_get_default_timeout()); 1028 } 1029 1030 int 1031 SSL_read(SSL *s, void *buf, int num) 1032 { 1033 if (num < 0) { 1034 SSLerror(s, SSL_R_BAD_LENGTH); 1035 return -1; 1036 } 1037 1038 if (s->internal->handshake_func == NULL) { 1039 SSLerror(s, SSL_R_UNINITIALIZED); 1040 return (-1); 1041 } 1042 1043 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1044 s->internal->rwstate = SSL_NOTHING; 1045 return (0); 1046 } 1047 return ssl3_read(s, buf, num); 1048 } 1049 1050 int 1051 SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read) 1052 { 1053 int ret; 1054 1055 /* We simply don't bother supporting enormous reads */ 1056 if (num > INT_MAX) { 1057 SSLerror(s, SSL_R_BAD_LENGTH); 1058 return 0; 1059 } 1060 1061 ret = SSL_read(s, buf, (int)num); 1062 if (ret < 0) 1063 ret = 0; 1064 *bytes_read = ret; 1065 1066 return ret > 0; 1067 } 1068 1069 int 1070 SSL_peek(SSL *s, void *buf, int num) 1071 { 1072 if (num < 0) { 1073 SSLerror(s, SSL_R_BAD_LENGTH); 1074 return -1; 1075 } 1076 1077 if (s->internal->handshake_func == NULL) { 1078 SSLerror(s, SSL_R_UNINITIALIZED); 1079 return (-1); 1080 } 1081 1082 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 1083 return (0); 1084 } 1085 return ssl3_peek(s, buf, num); 1086 } 1087 1088 int 1089 SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked) 1090 { 1091 int ret; 1092 1093 /* We simply don't bother supporting enormous peeks */ 1094 if (num > INT_MAX) { 1095 SSLerror(s, SSL_R_BAD_LENGTH); 1096 return 0; 1097 } 1098 1099 ret = SSL_peek(s, buf, (int)num); 1100 if (ret < 0) 1101 ret = 0; 1102 *bytes_peeked = ret; 1103 1104 return ret > 0; 1105 } 1106 1107 int 1108 SSL_write(SSL *s, const void *buf, int num) 1109 { 1110 if (num < 0) { 1111 SSLerror(s, SSL_R_BAD_LENGTH); 1112 return -1; 1113 } 1114 1115 if (s->internal->handshake_func == NULL) { 1116 SSLerror(s, SSL_R_UNINITIALIZED); 1117 return (-1); 1118 } 1119 1120 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 1121 s->internal->rwstate = SSL_NOTHING; 1122 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1123 return (-1); 1124 } 1125 return ssl3_write(s, buf, num); 1126 } 1127 1128 int 1129 SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written) 1130 { 1131 int ret; 1132 1133 /* We simply don't bother supporting enormous writes */ 1134 if (num > INT_MAX) { 1135 SSLerror(s, SSL_R_BAD_LENGTH); 1136 return 0; 1137 } 1138 1139 if (num == 0) { 1140 /* This API is special */ 1141 bytes_written = 0; 1142 return 1; 1143 } 1144 1145 ret = SSL_write(s, buf, (int)num); 1146 if (ret < 0) 1147 ret = 0; 1148 *bytes_written = ret; 1149 1150 return ret > 0; 1151 } 1152 1153 uint32_t 1154 SSL_CTX_get_max_early_data(const SSL_CTX *ctx) 1155 { 1156 return 0; 1157 } 1158 1159 int 1160 SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data) 1161 { 1162 return 1; 1163 } 1164 1165 uint32_t 1166 SSL_get_max_early_data(const SSL *s) 1167 { 1168 return 0; 1169 } 1170 1171 int 1172 SSL_set_max_early_data(SSL *s, uint32_t max_early_data) 1173 { 1174 return 1; 1175 } 1176 1177 int 1178 SSL_get_early_data_status(const SSL *s) 1179 { 1180 return SSL_EARLY_DATA_REJECTED; 1181 } 1182 1183 int 1184 SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes) 1185 { 1186 *readbytes = 0; 1187 1188 if (!s->server) { 1189 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1190 return SSL_READ_EARLY_DATA_ERROR; 1191 } 1192 1193 return SSL_READ_EARLY_DATA_FINISH; 1194 } 1195 1196 int 1197 SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written) 1198 { 1199 *written = 0; 1200 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1201 return 0; 1202 } 1203 1204 int 1205 SSL_shutdown(SSL *s) 1206 { 1207 /* 1208 * Note that this function behaves differently from what one might 1209 * expect. Return values are 0 for no success (yet), 1210 * 1 for success; but calling it once is usually not enough, 1211 * even if blocking I/O is used (see ssl3_shutdown). 1212 */ 1213 1214 if (s->internal->handshake_func == NULL) { 1215 SSLerror(s, SSL_R_UNINITIALIZED); 1216 return (-1); 1217 } 1218 1219 if (s != NULL && !SSL_in_init(s)) 1220 return (s->method->ssl_shutdown(s)); 1221 1222 return (1); 1223 } 1224 1225 int 1226 SSL_renegotiate(SSL *s) 1227 { 1228 if (s->internal->renegotiate == 0) 1229 s->internal->renegotiate = 1; 1230 1231 s->internal->new_session = 1; 1232 1233 return (s->method->ssl_renegotiate(s)); 1234 } 1235 1236 int 1237 SSL_renegotiate_abbreviated(SSL *s) 1238 { 1239 if (s->internal->renegotiate == 0) 1240 s->internal->renegotiate = 1; 1241 1242 s->internal->new_session = 0; 1243 1244 return (s->method->ssl_renegotiate(s)); 1245 } 1246 1247 int 1248 SSL_renegotiate_pending(SSL *s) 1249 { 1250 /* 1251 * Becomes true when negotiation is requested; 1252 * false again once a handshake has finished. 1253 */ 1254 return (s->internal->renegotiate != 0); 1255 } 1256 1257 long 1258 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1259 { 1260 long l; 1261 1262 switch (cmd) { 1263 case SSL_CTRL_GET_READ_AHEAD: 1264 return (s->internal->read_ahead); 1265 case SSL_CTRL_SET_READ_AHEAD: 1266 l = s->internal->read_ahead; 1267 s->internal->read_ahead = larg; 1268 return (l); 1269 1270 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1271 s->internal->msg_callback_arg = parg; 1272 return (1); 1273 1274 case SSL_CTRL_OPTIONS: 1275 return (s->internal->options|=larg); 1276 case SSL_CTRL_CLEAR_OPTIONS: 1277 return (s->internal->options&=~larg); 1278 case SSL_CTRL_MODE: 1279 return (s->internal->mode|=larg); 1280 case SSL_CTRL_CLEAR_MODE: 1281 return (s->internal->mode &=~larg); 1282 case SSL_CTRL_GET_MAX_CERT_LIST: 1283 return (s->internal->max_cert_list); 1284 case SSL_CTRL_SET_MAX_CERT_LIST: 1285 l = s->internal->max_cert_list; 1286 s->internal->max_cert_list = larg; 1287 return (l); 1288 case SSL_CTRL_SET_MTU: 1289 #ifndef OPENSSL_NO_DTLS1 1290 if (larg < (long)dtls1_min_mtu()) 1291 return (0); 1292 #endif 1293 if (SSL_is_dtls(s)) { 1294 s->d1->mtu = larg; 1295 return (larg); 1296 } 1297 return (0); 1298 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1299 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1300 return (0); 1301 s->max_send_fragment = larg; 1302 return (1); 1303 case SSL_CTRL_GET_RI_SUPPORT: 1304 if (s->s3) 1305 return (S3I(s)->send_connection_binding); 1306 else return (0); 1307 default: 1308 if (SSL_is_dtls(s)) 1309 return dtls1_ctrl(s, cmd, larg, parg); 1310 return ssl3_ctrl(s, cmd, larg, parg); 1311 } 1312 } 1313 1314 long 1315 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1316 { 1317 switch (cmd) { 1318 case SSL_CTRL_SET_MSG_CALLBACK: 1319 s->internal->msg_callback = (ssl_msg_callback_fn *)(fp); 1320 return (1); 1321 1322 default: 1323 return (ssl3_callback_ctrl(s, cmd, fp)); 1324 } 1325 } 1326 1327 struct lhash_st_SSL_SESSION * 1328 SSL_CTX_sessions(SSL_CTX *ctx) 1329 { 1330 return (ctx->internal->sessions); 1331 } 1332 1333 long 1334 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1335 { 1336 long l; 1337 1338 switch (cmd) { 1339 case SSL_CTRL_GET_READ_AHEAD: 1340 return (ctx->internal->read_ahead); 1341 case SSL_CTRL_SET_READ_AHEAD: 1342 l = ctx->internal->read_ahead; 1343 ctx->internal->read_ahead = larg; 1344 return (l); 1345 1346 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1347 ctx->internal->msg_callback_arg = parg; 1348 return (1); 1349 1350 case SSL_CTRL_GET_MAX_CERT_LIST: 1351 return (ctx->internal->max_cert_list); 1352 case SSL_CTRL_SET_MAX_CERT_LIST: 1353 l = ctx->internal->max_cert_list; 1354 ctx->internal->max_cert_list = larg; 1355 return (l); 1356 1357 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1358 l = ctx->internal->session_cache_size; 1359 ctx->internal->session_cache_size = larg; 1360 return (l); 1361 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1362 return (ctx->internal->session_cache_size); 1363 case SSL_CTRL_SET_SESS_CACHE_MODE: 1364 l = ctx->internal->session_cache_mode; 1365 ctx->internal->session_cache_mode = larg; 1366 return (l); 1367 case SSL_CTRL_GET_SESS_CACHE_MODE: 1368 return (ctx->internal->session_cache_mode); 1369 1370 case SSL_CTRL_SESS_NUMBER: 1371 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1372 case SSL_CTRL_SESS_CONNECT: 1373 return (ctx->internal->stats.sess_connect); 1374 case SSL_CTRL_SESS_CONNECT_GOOD: 1375 return (ctx->internal->stats.sess_connect_good); 1376 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1377 return (ctx->internal->stats.sess_connect_renegotiate); 1378 case SSL_CTRL_SESS_ACCEPT: 1379 return (ctx->internal->stats.sess_accept); 1380 case SSL_CTRL_SESS_ACCEPT_GOOD: 1381 return (ctx->internal->stats.sess_accept_good); 1382 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1383 return (ctx->internal->stats.sess_accept_renegotiate); 1384 case SSL_CTRL_SESS_HIT: 1385 return (ctx->internal->stats.sess_hit); 1386 case SSL_CTRL_SESS_CB_HIT: 1387 return (ctx->internal->stats.sess_cb_hit); 1388 case SSL_CTRL_SESS_MISSES: 1389 return (ctx->internal->stats.sess_miss); 1390 case SSL_CTRL_SESS_TIMEOUTS: 1391 return (ctx->internal->stats.sess_timeout); 1392 case SSL_CTRL_SESS_CACHE_FULL: 1393 return (ctx->internal->stats.sess_cache_full); 1394 case SSL_CTRL_OPTIONS: 1395 return (ctx->internal->options|=larg); 1396 case SSL_CTRL_CLEAR_OPTIONS: 1397 return (ctx->internal->options&=~larg); 1398 case SSL_CTRL_MODE: 1399 return (ctx->internal->mode|=larg); 1400 case SSL_CTRL_CLEAR_MODE: 1401 return (ctx->internal->mode&=~larg); 1402 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1403 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1404 return (0); 1405 ctx->internal->max_send_fragment = larg; 1406 return (1); 1407 default: 1408 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1409 } 1410 } 1411 1412 long 1413 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1414 { 1415 switch (cmd) { 1416 case SSL_CTRL_SET_MSG_CALLBACK: 1417 ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp; 1418 return (1); 1419 1420 default: 1421 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1422 } 1423 } 1424 1425 int 1426 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1427 { 1428 long l; 1429 1430 l = a->id - b->id; 1431 if (l == 0L) 1432 return (0); 1433 else 1434 return ((l > 0) ? 1:-1); 1435 } 1436 1437 STACK_OF(SSL_CIPHER) * 1438 SSL_get_ciphers(const SSL *s) 1439 { 1440 if (s == NULL) 1441 return (NULL); 1442 if (s->cipher_list != NULL) 1443 return (s->cipher_list); 1444 1445 return (s->ctx->cipher_list); 1446 } 1447 1448 STACK_OF(SSL_CIPHER) * 1449 SSL_get_client_ciphers(const SSL *s) 1450 { 1451 if (s == NULL || s->session == NULL || !s->server) 1452 return NULL; 1453 return s->session->ciphers; 1454 } 1455 1456 STACK_OF(SSL_CIPHER) * 1457 SSL_get1_supported_ciphers(SSL *s) 1458 { 1459 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1460 const SSL_CIPHER *cipher; 1461 uint16_t min_vers, max_vers; 1462 int i; 1463 1464 if (s == NULL) 1465 return NULL; 1466 if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers)) 1467 return NULL; 1468 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1469 return NULL; 1470 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1471 return NULL; 1472 1473 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1474 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1475 goto err; 1476 if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers, 1477 max_vers)) 1478 continue; 1479 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1480 goto err; 1481 } 1482 1483 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1484 return supported_ciphers; 1485 1486 err: 1487 sk_SSL_CIPHER_free(supported_ciphers); 1488 return NULL; 1489 } 1490 1491 /* See if we have any ECC cipher suites. */ 1492 int 1493 ssl_has_ecc_ciphers(SSL *s) 1494 { 1495 STACK_OF(SSL_CIPHER) *ciphers; 1496 unsigned long alg_k, alg_a; 1497 SSL_CIPHER *cipher; 1498 int i; 1499 1500 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1501 return 0; 1502 1503 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1504 cipher = sk_SSL_CIPHER_value(ciphers, i); 1505 1506 alg_k = cipher->algorithm_mkey; 1507 alg_a = cipher->algorithm_auth; 1508 1509 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1510 return 1; 1511 } 1512 1513 return 0; 1514 } 1515 1516 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1517 const char * 1518 SSL_get_cipher_list(const SSL *s, int n) 1519 { 1520 STACK_OF(SSL_CIPHER) *ciphers; 1521 const SSL_CIPHER *cipher; 1522 1523 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1524 return (NULL); 1525 if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL) 1526 return (NULL); 1527 1528 return (cipher->name); 1529 } 1530 1531 STACK_OF(SSL_CIPHER) * 1532 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1533 { 1534 if (ctx == NULL) 1535 return NULL; 1536 return ctx->cipher_list; 1537 } 1538 1539 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1540 int 1541 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1542 { 1543 STACK_OF(SSL_CIPHER) *ciphers; 1544 1545 /* 1546 * ssl_create_cipher_list may return an empty stack if it was unable to 1547 * find a cipher matching the given rule string (for example if the 1548 * rule string specifies a cipher which has been disabled). This is not 1549 * an error as far as ssl_create_cipher_list is concerned, and hence 1550 * ctx->cipher_list has been updated. 1551 */ 1552 ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1553 ctx->internal->cipher_list_tls13, str); 1554 if (ciphers == NULL) { 1555 return (0); 1556 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1557 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1558 return (0); 1559 } 1560 return (1); 1561 } 1562 1563 int 1564 SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) 1565 { 1566 if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) { 1567 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1568 return 0; 1569 } 1570 if (!ssl_merge_cipherlists(ctx->cipher_list, 1571 ctx->internal->cipher_list_tls13, &ctx->cipher_list)) 1572 return 0; 1573 1574 return 1; 1575 } 1576 1577 /* Specify the ciphers to be used by the SSL. */ 1578 int 1579 SSL_set_cipher_list(SSL *s, const char *str) 1580 { 1581 STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13; 1582 1583 if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL) 1584 ciphers_tls13 = s->ctx->internal->cipher_list_tls13; 1585 1586 /* See comment in SSL_CTX_set_cipher_list. */ 1587 ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1588 ciphers_tls13, str); 1589 if (ciphers == NULL) { 1590 return (0); 1591 } else if (sk_SSL_CIPHER_num(ciphers) == 0) { 1592 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1593 return (0); 1594 } 1595 return (1); 1596 } 1597 1598 int 1599 SSL_set_ciphersuites(SSL *s, const char *str) 1600 { 1601 STACK_OF(SSL_CIPHER) *ciphers; 1602 1603 if ((ciphers = s->cipher_list) == NULL) 1604 ciphers = s->ctx->cipher_list; 1605 1606 if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) { 1607 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1608 return (0); 1609 } 1610 if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13, 1611 &s->cipher_list)) 1612 return 0; 1613 1614 return 1; 1615 } 1616 1617 char * 1618 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1619 { 1620 STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers; 1621 const SSL_CIPHER *cipher; 1622 size_t curlen = 0; 1623 char *end; 1624 int i; 1625 1626 if (!s->server || s->session == NULL || len < 2) 1627 return NULL; 1628 1629 if ((client_ciphers = s->session->ciphers) == NULL) 1630 return NULL; 1631 if ((server_ciphers = SSL_get_ciphers(s)) == NULL) 1632 return NULL; 1633 if (sk_SSL_CIPHER_num(client_ciphers) == 0 || 1634 sk_SSL_CIPHER_num(server_ciphers) == 0) 1635 return NULL; 1636 1637 buf[0] = '\0'; 1638 for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) { 1639 cipher = sk_SSL_CIPHER_value(client_ciphers, i); 1640 1641 if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0) 1642 continue; 1643 1644 end = buf + curlen; 1645 if (strlcat(buf, cipher->name, len) >= len || 1646 (curlen = strlcat(buf, ":", len)) >= len) { 1647 /* remove truncated cipher from list */ 1648 *end = '\0'; 1649 break; 1650 } 1651 } 1652 /* remove trailing colon */ 1653 if ((end = strrchr(buf, ':')) != NULL) 1654 *end = '\0'; 1655 return buf; 1656 } 1657 1658 /* 1659 * Return a servername extension value if provided in Client Hello, or NULL. 1660 * So far, only host_name types are defined (RFC 3546). 1661 */ 1662 const char * 1663 SSL_get_servername(const SSL *s, const int type) 1664 { 1665 if (type != TLSEXT_NAMETYPE_host_name) 1666 return (NULL); 1667 1668 return (s->session && !s->tlsext_hostname ? 1669 s->session->tlsext_hostname : 1670 s->tlsext_hostname); 1671 } 1672 1673 int 1674 SSL_get_servername_type(const SSL *s) 1675 { 1676 if (s->session && 1677 (!s->tlsext_hostname ? 1678 s->session->tlsext_hostname : s->tlsext_hostname)) 1679 return (TLSEXT_NAMETYPE_host_name); 1680 return (-1); 1681 } 1682 1683 /* 1684 * SSL_select_next_proto implements standard protocol selection. It is 1685 * expected that this function is called from the callback set by 1686 * SSL_CTX_set_alpn_select_cb. 1687 * 1688 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1689 * strings. The length byte itself is not included in the length. A byte 1690 * string of length 0 is invalid. No byte string may be truncated. 1691 * 1692 * It returns either: 1693 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1694 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1695 */ 1696 int 1697 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1698 const unsigned char *server, unsigned int server_len, 1699 const unsigned char *client, unsigned int client_len) 1700 { 1701 unsigned int i, j; 1702 const unsigned char *result; 1703 int status = OPENSSL_NPN_UNSUPPORTED; 1704 1705 /* 1706 * For each protocol in server preference order, 1707 * see if we support it. 1708 */ 1709 for (i = 0; i < server_len; ) { 1710 for (j = 0; j < client_len; ) { 1711 if (server[i] == client[j] && 1712 memcmp(&server[i + 1], 1713 &client[j + 1], server[i]) == 0) { 1714 /* We found a match */ 1715 result = &server[i]; 1716 status = OPENSSL_NPN_NEGOTIATED; 1717 goto found; 1718 } 1719 j += client[j]; 1720 j++; 1721 } 1722 i += server[i]; 1723 i++; 1724 } 1725 1726 /* There's no overlap between our protocols and the server's list. */ 1727 result = client; 1728 status = OPENSSL_NPN_NO_OVERLAP; 1729 1730 found: 1731 *out = (unsigned char *) result + 1; 1732 *outlen = result[0]; 1733 return (status); 1734 } 1735 1736 /* SSL_get0_next_proto_negotiated is deprecated. */ 1737 void 1738 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1739 unsigned int *len) 1740 { 1741 *data = NULL; 1742 *len = 0; 1743 } 1744 1745 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1746 void 1747 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1748 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1749 { 1750 } 1751 1752 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1753 void 1754 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1755 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1756 unsigned int inlen, void *arg), void *arg) 1757 { 1758 } 1759 1760 /* 1761 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1762 * protocols, which must be in wire-format (i.e. a series of non-empty, 1763 * 8-bit length-prefixed strings). Returns 0 on success. 1764 */ 1765 int 1766 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1767 unsigned int protos_len) 1768 { 1769 int failed = 1; 1770 1771 if (protos == NULL || protos_len == 0) 1772 goto err; 1773 1774 free(ctx->internal->alpn_client_proto_list); 1775 ctx->internal->alpn_client_proto_list = NULL; 1776 ctx->internal->alpn_client_proto_list_len = 0; 1777 1778 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1779 == NULL) 1780 goto err; 1781 ctx->internal->alpn_client_proto_list_len = protos_len; 1782 1783 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1784 1785 failed = 0; 1786 1787 err: 1788 /* NOTE: Return values are the reverse of what you expect. */ 1789 return (failed); 1790 } 1791 1792 /* 1793 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1794 * protocols, which must be in wire-format (i.e. a series of non-empty, 1795 * 8-bit length-prefixed strings). Returns 0 on success. 1796 */ 1797 int 1798 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1799 unsigned int protos_len) 1800 { 1801 int failed = 1; 1802 1803 if (protos == NULL || protos_len == 0) 1804 goto err; 1805 1806 free(ssl->internal->alpn_client_proto_list); 1807 ssl->internal->alpn_client_proto_list = NULL; 1808 ssl->internal->alpn_client_proto_list_len = 0; 1809 1810 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1811 == NULL) 1812 goto err; 1813 ssl->internal->alpn_client_proto_list_len = protos_len; 1814 1815 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1816 1817 failed = 0; 1818 1819 err: 1820 /* NOTE: Return values are the reverse of what you expect. */ 1821 return (failed); 1822 } 1823 1824 /* 1825 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1826 * ClientHello processing in order to select an ALPN protocol from the 1827 * client's list of offered protocols. 1828 */ 1829 void 1830 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1831 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1832 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1833 { 1834 ctx->internal->alpn_select_cb = cb; 1835 ctx->internal->alpn_select_cb_arg = arg; 1836 } 1837 1838 /* 1839 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1840 * it sets data to point to len bytes of protocol name (not including the 1841 * leading length-prefix byte). If the server didn't respond with* a negotiated 1842 * protocol then len will be zero. 1843 */ 1844 void 1845 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1846 unsigned int *len) 1847 { 1848 *data = ssl->s3->internal->alpn_selected; 1849 *len = ssl->s3->internal->alpn_selected_len; 1850 } 1851 1852 void 1853 SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb) 1854 { 1855 return; 1856 } 1857 1858 int 1859 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1860 const char *label, size_t llen, const unsigned char *p, size_t plen, 1861 int use_context) 1862 { 1863 if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) { 1864 if (!use_context) { 1865 p = NULL; 1866 plen = 0; 1867 } 1868 return tls13_exporter(s->internal->tls13, label, llen, p, plen, 1869 out, olen); 1870 } 1871 1872 return (tls1_export_keying_material(s, out, olen, label, llen, p, plen, 1873 use_context)); 1874 } 1875 1876 static unsigned long 1877 ssl_session_hash(const SSL_SESSION *a) 1878 { 1879 unsigned long l; 1880 1881 l = (unsigned long) 1882 ((unsigned int) a->session_id[0] )| 1883 ((unsigned int) a->session_id[1]<< 8L)| 1884 ((unsigned long)a->session_id[2]<<16L)| 1885 ((unsigned long)a->session_id[3]<<24L); 1886 return (l); 1887 } 1888 1889 /* 1890 * NB: If this function (or indeed the hash function which uses a sort of 1891 * coarser function than this one) is changed, ensure 1892 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1893 * able to construct an SSL_SESSION that will collide with any existing session 1894 * with a matching session ID. 1895 */ 1896 static int 1897 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1898 { 1899 if (a->ssl_version != b->ssl_version) 1900 return (1); 1901 if (a->session_id_length != b->session_id_length) 1902 return (1); 1903 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1904 return (1); 1905 return (0); 1906 } 1907 1908 /* 1909 * These wrapper functions should remain rather than redeclaring 1910 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1911 * variable. The reason is that the functions aren't static, they're exposed via 1912 * ssl.h. 1913 */ 1914 static unsigned long 1915 ssl_session_LHASH_HASH(const void *arg) 1916 { 1917 const SSL_SESSION *a = arg; 1918 1919 return ssl_session_hash(a); 1920 } 1921 1922 static int 1923 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1924 { 1925 const SSL_SESSION *a = arg1; 1926 const SSL_SESSION *b = arg2; 1927 1928 return ssl_session_cmp(a, b); 1929 } 1930 1931 SSL_CTX * 1932 SSL_CTX_new(const SSL_METHOD *meth) 1933 { 1934 SSL_CTX *ret; 1935 1936 if (!OPENSSL_init_ssl(0, NULL)) { 1937 SSLerrorx(SSL_R_LIBRARY_BUG); 1938 return (NULL); 1939 } 1940 1941 if (meth == NULL) { 1942 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1943 return (NULL); 1944 } 1945 1946 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1947 SSLerrorx(ERR_R_MALLOC_FAILURE); 1948 return (NULL); 1949 } 1950 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1951 free(ret); 1952 SSLerrorx(ERR_R_MALLOC_FAILURE); 1953 return (NULL); 1954 } 1955 1956 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1957 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1958 goto err; 1959 } 1960 1961 ret->method = meth; 1962 ret->internal->min_tls_version = meth->min_tls_version; 1963 ret->internal->max_tls_version = meth->max_tls_version; 1964 ret->internal->min_proto_version = 0; 1965 ret->internal->max_proto_version = 0; 1966 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1967 1968 ret->cert_store = NULL; 1969 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1970 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1971 ret->internal->session_cache_head = NULL; 1972 ret->internal->session_cache_tail = NULL; 1973 1974 /* We take the system default */ 1975 ret->session_timeout = ssl_get_default_timeout(); 1976 1977 ret->internal->new_session_cb = 0; 1978 ret->internal->remove_session_cb = 0; 1979 ret->internal->get_session_cb = 0; 1980 ret->internal->generate_session_id = 0; 1981 1982 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1983 1984 ret->references = 1; 1985 ret->internal->quiet_shutdown = 0; 1986 1987 ret->internal->info_callback = NULL; 1988 1989 ret->internal->app_verify_callback = 0; 1990 ret->internal->app_verify_arg = NULL; 1991 1992 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1993 ret->internal->read_ahead = 0; 1994 ret->internal->msg_callback = 0; 1995 ret->internal->msg_callback_arg = NULL; 1996 ret->verify_mode = SSL_VERIFY_NONE; 1997 ret->sid_ctx_length = 0; 1998 ret->internal->default_verify_callback = NULL; 1999 2000 if ((ret->internal->cert = ssl_cert_new()) == NULL) 2001 goto err; 2002 2003 ret->default_passwd_callback = 0; 2004 ret->default_passwd_callback_userdata = NULL; 2005 ret->internal->client_cert_cb = 0; 2006 ret->internal->app_gen_cookie_cb = 0; 2007 ret->internal->app_verify_cookie_cb = 0; 2008 2009 ret->internal->sessions = lh_SSL_SESSION_new(); 2010 if (ret->internal->sessions == NULL) 2011 goto err; 2012 ret->cert_store = X509_STORE_new(); 2013 if (ret->cert_store == NULL) 2014 goto err; 2015 2016 ssl_create_cipher_list(ret->method, &ret->cipher_list, 2017 NULL, SSL_DEFAULT_CIPHER_LIST); 2018 if (ret->cipher_list == NULL || 2019 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 2020 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 2021 goto err2; 2022 } 2023 2024 ret->param = X509_VERIFY_PARAM_new(); 2025 if (!ret->param) 2026 goto err; 2027 2028 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 2029 goto err; 2030 2031 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 2032 2033 ret->extra_certs = NULL; 2034 2035 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2036 2037 ret->internal->tlsext_servername_callback = 0; 2038 ret->internal->tlsext_servername_arg = NULL; 2039 2040 /* Setup RFC4507 ticket keys */ 2041 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 2042 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 2043 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 2044 2045 ret->internal->tlsext_status_cb = 0; 2046 ret->internal->tlsext_status_arg = NULL; 2047 2048 #ifndef OPENSSL_NO_ENGINE 2049 ret->internal->client_cert_engine = NULL; 2050 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2051 #define eng_strx(x) #x 2052 #define eng_str(x) eng_strx(x) 2053 /* Use specific client engine automatically... ignore errors */ 2054 { 2055 ENGINE *eng; 2056 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2057 if (!eng) { 2058 ERR_clear_error(); 2059 ENGINE_load_builtin_engines(); 2060 eng = ENGINE_by_id(eng_str( 2061 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2062 } 2063 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2064 ERR_clear_error(); 2065 } 2066 #endif 2067 #endif 2068 /* 2069 * Default is to connect to non-RI servers. When RI is more widely 2070 * deployed might change this. 2071 */ 2072 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2073 2074 return (ret); 2075 err: 2076 SSLerrorx(ERR_R_MALLOC_FAILURE); 2077 err2: 2078 SSL_CTX_free(ret); 2079 return (NULL); 2080 } 2081 2082 void 2083 SSL_CTX_free(SSL_CTX *ctx) 2084 { 2085 int i; 2086 2087 if (ctx == NULL) 2088 return; 2089 2090 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 2091 if (i > 0) 2092 return; 2093 2094 X509_VERIFY_PARAM_free(ctx->param); 2095 2096 /* 2097 * Free internal session cache. However: the remove_cb() may reference 2098 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2099 * after the sessions were flushed. 2100 * As the ex_data handling routines might also touch the session cache, 2101 * the most secure solution seems to be: empty (flush) the cache, then 2102 * free ex_data, then finally free the cache. 2103 * (See ticket [openssl.org #212].) 2104 */ 2105 if (ctx->internal->sessions != NULL) 2106 SSL_CTX_flush_sessions(ctx, 0); 2107 2108 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 2109 2110 lh_SSL_SESSION_free(ctx->internal->sessions); 2111 2112 X509_STORE_free(ctx->cert_store); 2113 sk_SSL_CIPHER_free(ctx->cipher_list); 2114 sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13); 2115 ssl_cert_free(ctx->internal->cert); 2116 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 2117 sk_X509_pop_free(ctx->extra_certs, X509_free); 2118 2119 #ifndef OPENSSL_NO_SRTP 2120 if (ctx->internal->srtp_profiles) 2121 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 2122 #endif 2123 2124 #ifndef OPENSSL_NO_ENGINE 2125 ENGINE_finish(ctx->internal->client_cert_engine); 2126 #endif 2127 2128 free(ctx->internal->tlsext_ecpointformatlist); 2129 free(ctx->internal->tlsext_supportedgroups); 2130 2131 free(ctx->internal->alpn_client_proto_list); 2132 2133 free(ctx->internal); 2134 free(ctx); 2135 } 2136 2137 int 2138 SSL_CTX_up_ref(SSL_CTX *ctx) 2139 { 2140 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2141 return ((refs > 1) ? 1 : 0); 2142 } 2143 2144 pem_password_cb * 2145 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2146 { 2147 return (ctx->default_passwd_callback); 2148 } 2149 2150 void 2151 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2152 { 2153 ctx->default_passwd_callback = cb; 2154 } 2155 2156 void * 2157 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2158 { 2159 return ctx->default_passwd_callback_userdata; 2160 } 2161 2162 void 2163 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2164 { 2165 ctx->default_passwd_callback_userdata = u; 2166 } 2167 2168 void 2169 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2170 int (*cb)(X509_STORE_CTX *, void *), void *arg) 2171 { 2172 ctx->internal->app_verify_callback = cb; 2173 ctx->internal->app_verify_arg = arg; 2174 } 2175 2176 void 2177 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2178 { 2179 ctx->verify_mode = mode; 2180 ctx->internal->default_verify_callback = cb; 2181 } 2182 2183 void 2184 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2185 { 2186 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2187 } 2188 2189 void 2190 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2191 { 2192 unsigned long mask_a, mask_k; 2193 CERT_PKEY *cpk; 2194 2195 if (c == NULL) 2196 return; 2197 2198 mask_a = SSL_aNULL | SSL_aTLS1_3; 2199 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2200 2201 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2202 mask_k |= SSL_kDHE; 2203 2204 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2205 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2206 /* Key usage, if present, must allow signing. */ 2207 if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE) 2208 mask_a |= SSL_aECDSA; 2209 } 2210 2211 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2212 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2213 mask_k |= SSL_kGOST; 2214 mask_a |= SSL_aGOST01; 2215 } 2216 2217 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2218 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2219 mask_a |= SSL_aRSA; 2220 mask_k |= SSL_kRSA; 2221 } 2222 2223 c->mask_k = mask_k; 2224 c->mask_a = mask_a; 2225 c->valid = 1; 2226 } 2227 2228 /* See if this handshake is using an ECC cipher suite. */ 2229 int 2230 ssl_using_ecc_cipher(SSL *s) 2231 { 2232 unsigned long alg_a, alg_k; 2233 2234 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2235 alg_k = S3I(s)->hs.cipher->algorithm_mkey; 2236 2237 return s->session->tlsext_ecpointformatlist != NULL && 2238 s->session->tlsext_ecpointformatlist_length > 0 && 2239 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2240 } 2241 2242 int 2243 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2244 { 2245 const SSL_CIPHER *cs = S3I(s)->hs.cipher; 2246 unsigned long alg_a; 2247 2248 alg_a = cs->algorithm_auth; 2249 2250 if (alg_a & SSL_aECDSA) { 2251 /* Key usage, if present, must allow signing. */ 2252 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) { 2253 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2254 return (0); 2255 } 2256 } 2257 2258 return (1); 2259 } 2260 2261 CERT_PKEY * 2262 ssl_get_server_send_pkey(const SSL *s) 2263 { 2264 unsigned long alg_a; 2265 CERT *c; 2266 int i; 2267 2268 c = s->cert; 2269 ssl_set_cert_masks(c, S3I(s)->hs.cipher); 2270 2271 alg_a = S3I(s)->hs.cipher->algorithm_auth; 2272 2273 if (alg_a & SSL_aECDSA) { 2274 i = SSL_PKEY_ECC; 2275 } else if (alg_a & SSL_aRSA) { 2276 i = SSL_PKEY_RSA; 2277 } else if (alg_a & SSL_aGOST01) { 2278 i = SSL_PKEY_GOST01; 2279 } else { /* if (alg_a & SSL_aNULL) */ 2280 SSLerror(s, ERR_R_INTERNAL_ERROR); 2281 return (NULL); 2282 } 2283 2284 return (c->pkeys + i); 2285 } 2286 2287 EVP_PKEY * 2288 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2289 const struct ssl_sigalg **sap) 2290 { 2291 const struct ssl_sigalg *sigalg = NULL; 2292 EVP_PKEY *pkey = NULL; 2293 unsigned long alg_a; 2294 CERT *c; 2295 int idx = -1; 2296 2297 alg_a = cipher->algorithm_auth; 2298 c = s->cert; 2299 2300 if (alg_a & SSL_aRSA) { 2301 idx = SSL_PKEY_RSA; 2302 } else if ((alg_a & SSL_aECDSA) && 2303 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2304 idx = SSL_PKEY_ECC; 2305 if (idx == -1) { 2306 SSLerror(s, ERR_R_INTERNAL_ERROR); 2307 return (NULL); 2308 } 2309 2310 pkey = c->pkeys[idx].privatekey; 2311 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2312 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2313 return (NULL); 2314 } 2315 *pmd = sigalg->md(); 2316 *sap = sigalg; 2317 2318 return (pkey); 2319 } 2320 2321 size_t 2322 ssl_dhe_params_auto_key_bits(SSL *s) 2323 { 2324 CERT_PKEY *cpk; 2325 int key_bits; 2326 2327 if (s->cert->dh_tmp_auto == 2) { 2328 key_bits = 1024; 2329 } else if (S3I(s)->hs.cipher->algorithm_auth & SSL_aNULL) { 2330 key_bits = 1024; 2331 if (S3I(s)->hs.cipher->strength_bits == 256) 2332 key_bits = 3072; 2333 } else { 2334 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2335 return 0; 2336 if (cpk->privatekey == NULL || 2337 EVP_PKEY_get0_RSA(cpk->privatekey) == NULL) 2338 return 0; 2339 if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0) 2340 return 0; 2341 } 2342 2343 return key_bits; 2344 } 2345 2346 static int 2347 ssl_should_update_external_cache(SSL *s, int mode) 2348 { 2349 int cache_mode; 2350 2351 cache_mode = s->session_ctx->internal->session_cache_mode; 2352 2353 /* Don't cache if mode says not to */ 2354 if ((cache_mode & mode) == 0) 2355 return 0; 2356 2357 /* if it is not already cached, cache it */ 2358 if (!s->internal->hit) 2359 return 1; 2360 2361 /* If it's TLS 1.3, do it to match OpenSSL */ 2362 if (S3I(s)->hs.negotiated_tls_version >= TLS1_3_VERSION) 2363 return 1; 2364 2365 return 0; 2366 } 2367 2368 static int 2369 ssl_should_update_internal_cache(SSL *s, int mode) 2370 { 2371 int cache_mode; 2372 2373 cache_mode = s->session_ctx->internal->session_cache_mode; 2374 2375 /* Don't cache if mode says not to */ 2376 if ((cache_mode & mode) == 0) 2377 return 0; 2378 2379 /* If it is already cached, don't cache it again */ 2380 if (s->internal->hit) 2381 return 0; 2382 2383 if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0) 2384 return 0; 2385 2386 /* If we are lesser than TLS 1.3, Cache it. */ 2387 if (S3I(s)->hs.negotiated_tls_version < TLS1_3_VERSION) 2388 return 1; 2389 2390 /* Below this we consider TLS 1.3 or later */ 2391 2392 /* If it's not a server, add it? OpenSSL does this. */ 2393 if (!s->server) 2394 return 1; 2395 2396 /* XXX if we support early data / PSK need to add */ 2397 2398 /* 2399 * If we have the remove session callback, we will want 2400 * to know about this even if it's a stateless ticket 2401 * from 1.3 so we can know when it is removed. 2402 */ 2403 if (s->session_ctx->internal->remove_session_cb != NULL) 2404 return 1; 2405 2406 /* If we have set OP_NO_TICKET, cache it. */ 2407 if ((s->internal->options & SSL_OP_NO_TICKET) != 0) 2408 return 1; 2409 2410 /* Otherwise do not cache */ 2411 return 0; 2412 } 2413 2414 void 2415 ssl_update_cache(SSL *s, int mode) 2416 { 2417 int cache_mode, do_callback; 2418 2419 if (s->session->session_id_length == 0) 2420 return; 2421 2422 cache_mode = s->session_ctx->internal->session_cache_mode; 2423 do_callback = ssl_should_update_external_cache(s, mode); 2424 2425 if (ssl_should_update_internal_cache(s, mode)) { 2426 /* 2427 * XXX should we fail if the add to the internal cache 2428 * fails? OpenSSL doesn't care.. 2429 */ 2430 (void) SSL_CTX_add_session(s->session_ctx, s->session); 2431 } 2432 2433 /* 2434 * Update the "external cache" by calling the new session 2435 * callback if present, even with TLS 1.3 without early data 2436 * "because some application just want to know about the 2437 * creation of a session and aren't doing a full cache". 2438 * Apparently, if they are doing a full cache, they'll have 2439 * some fun, but we endeavour to give application writers the 2440 * same glorious experience they expect from OpenSSL which 2441 * does it this way. 2442 */ 2443 if (do_callback && s->session_ctx->internal->new_session_cb != NULL) { 2444 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2445 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2446 SSL_SESSION_free(s->session); 2447 } 2448 2449 /* Auto flush every 255 connections. */ 2450 if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) && 2451 (cache_mode & mode) != 0) { 2452 int connections; 2453 if (mode & SSL_SESS_CACHE_CLIENT) 2454 connections = s->session_ctx->internal->stats.sess_connect_good; 2455 else 2456 connections = s->session_ctx->internal->stats.sess_accept_good; 2457 if ((connections & 0xff) == 0xff) 2458 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2459 } 2460 } 2461 2462 const SSL_METHOD * 2463 SSL_get_ssl_method(SSL *s) 2464 { 2465 return (s->method); 2466 } 2467 2468 int 2469 SSL_set_ssl_method(SSL *s, const SSL_METHOD *method) 2470 { 2471 int (*handshake_func)(SSL *) = NULL; 2472 int ret = 1; 2473 2474 if (s->method == method) 2475 return (ret); 2476 2477 if (s->internal->handshake_func == s->method->ssl_connect) 2478 handshake_func = method->ssl_connect; 2479 else if (s->internal->handshake_func == s->method->ssl_accept) 2480 handshake_func = method->ssl_accept; 2481 2482 if (s->method->version == method->version) { 2483 s->method = method; 2484 } else { 2485 s->method->ssl_free(s); 2486 s->method = method; 2487 ret = s->method->ssl_new(s); 2488 } 2489 s->internal->handshake_func = handshake_func; 2490 2491 return (ret); 2492 } 2493 2494 int 2495 SSL_get_error(const SSL *s, int i) 2496 { 2497 int reason; 2498 unsigned long l; 2499 BIO *bio; 2500 2501 if (i > 0) 2502 return (SSL_ERROR_NONE); 2503 2504 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2505 * etc, where we do encode the error */ 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 ((i < 0) && 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 ((i < 0) && 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 if ((i < 0) && SSL_want_x509_lookup(s)) { 2561 return (SSL_ERROR_WANT_X509_LOOKUP); 2562 } 2563 2564 if (i == 0) { 2565 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2566 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2567 return (SSL_ERROR_ZERO_RETURN); 2568 } 2569 return (SSL_ERROR_SYSCALL); 2570 } 2571 2572 int 2573 SSL_do_handshake(SSL *s) 2574 { 2575 int ret = 1; 2576 2577 if (s->internal->handshake_func == NULL) { 2578 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2579 return (-1); 2580 } 2581 2582 s->method->ssl_renegotiate_check(s); 2583 2584 if (SSL_in_init(s) || SSL_in_before(s)) { 2585 ret = s->internal->handshake_func(s); 2586 } 2587 return (ret); 2588 } 2589 2590 /* 2591 * For the next 2 functions, SSL_clear() sets shutdown and so 2592 * one of these calls will reset it 2593 */ 2594 void 2595 SSL_set_accept_state(SSL *s) 2596 { 2597 s->server = 1; 2598 s->internal->shutdown = 0; 2599 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2600 s->internal->handshake_func = s->method->ssl_accept; 2601 ssl_clear_cipher_state(s); 2602 } 2603 2604 void 2605 SSL_set_connect_state(SSL *s) 2606 { 2607 s->server = 0; 2608 s->internal->shutdown = 0; 2609 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2610 s->internal->handshake_func = s->method->ssl_connect; 2611 ssl_clear_cipher_state(s); 2612 } 2613 2614 int 2615 ssl_undefined_function(SSL *s) 2616 { 2617 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2618 return (0); 2619 } 2620 2621 int 2622 ssl_undefined_void_function(void) 2623 { 2624 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2625 return (0); 2626 } 2627 2628 int 2629 ssl_undefined_const_function(const SSL *s) 2630 { 2631 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2632 return (0); 2633 } 2634 2635 const char * 2636 ssl_version_string(int ver) 2637 { 2638 switch (ver) { 2639 case TLS1_VERSION: 2640 return (SSL_TXT_TLSV1); 2641 case TLS1_1_VERSION: 2642 return (SSL_TXT_TLSV1_1); 2643 case TLS1_2_VERSION: 2644 return (SSL_TXT_TLSV1_2); 2645 case TLS1_3_VERSION: 2646 return (SSL_TXT_TLSV1_3); 2647 case DTLS1_VERSION: 2648 return (SSL_TXT_DTLS1); 2649 case DTLS1_2_VERSION: 2650 return (SSL_TXT_DTLS1_2); 2651 default: 2652 return ("unknown"); 2653 } 2654 } 2655 2656 const char * 2657 SSL_get_version(const SSL *s) 2658 { 2659 return ssl_version_string(s->version); 2660 } 2661 2662 SSL * 2663 SSL_dup(SSL *s) 2664 { 2665 STACK_OF(X509_NAME) *sk; 2666 X509_NAME *xn; 2667 SSL *ret; 2668 int i; 2669 2670 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2671 goto err; 2672 2673 ret->version = s->version; 2674 ret->method = s->method; 2675 2676 if (s->session != NULL) { 2677 if (!SSL_copy_session_id(ret, s)) 2678 goto err; 2679 } else { 2680 /* 2681 * No session has been established yet, so we have to expect 2682 * that s->cert or ret->cert will be changed later -- 2683 * they should not both point to the same object, 2684 * and thus we can't use SSL_copy_session_id. 2685 */ 2686 2687 ret->method->ssl_free(ret); 2688 ret->method = s->method; 2689 ret->method->ssl_new(ret); 2690 2691 ssl_cert_free(ret->cert); 2692 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2693 goto err; 2694 2695 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2696 s->sid_ctx_length)) 2697 goto err; 2698 } 2699 2700 ret->internal->options = s->internal->options; 2701 ret->internal->mode = s->internal->mode; 2702 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2703 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2704 ret->internal->msg_callback = s->internal->msg_callback; 2705 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2706 SSL_set_verify(ret, SSL_get_verify_mode(s), 2707 SSL_get_verify_callback(s)); 2708 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2709 ret->internal->generate_session_id = s->internal->generate_session_id; 2710 2711 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2712 2713 ret->internal->debug = s->internal->debug; 2714 2715 /* copy app data, a little dangerous perhaps */ 2716 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2717 &ret->internal->ex_data, &s->internal->ex_data)) 2718 goto err; 2719 2720 /* setup rbio, and wbio */ 2721 if (s->rbio != NULL) { 2722 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2723 goto err; 2724 } 2725 if (s->wbio != NULL) { 2726 if (s->wbio != s->rbio) { 2727 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2728 goto err; 2729 } else 2730 ret->wbio = ret->rbio; 2731 } 2732 ret->internal->rwstate = s->internal->rwstate; 2733 ret->internal->in_handshake = s->internal->in_handshake; 2734 ret->internal->handshake_func = s->internal->handshake_func; 2735 ret->server = s->server; 2736 ret->internal->renegotiate = s->internal->renegotiate; 2737 ret->internal->new_session = s->internal->new_session; 2738 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2739 ret->internal->shutdown = s->internal->shutdown; 2740 /* SSL_dup does not really work at any state, though */ 2741 S3I(ret)->hs.state = S3I(s)->hs.state; 2742 ret->internal->rstate = s->internal->rstate; 2743 2744 /* 2745 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2746 * ret->init_off 2747 */ 2748 ret->internal->init_num = 0; 2749 2750 ret->internal->hit = s->internal->hit; 2751 2752 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2753 2754 if (s->cipher_list != NULL) { 2755 if ((ret->cipher_list = 2756 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2757 goto err; 2758 } 2759 if (s->internal->cipher_list_tls13 != NULL) { 2760 if ((ret->internal->cipher_list_tls13 = 2761 sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL) 2762 goto err; 2763 } 2764 2765 /* Dup the client_CA list */ 2766 if (s->internal->client_CA != NULL) { 2767 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2768 ret->internal->client_CA = sk; 2769 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2770 xn = sk_X509_NAME_value(sk, i); 2771 if (sk_X509_NAME_set(sk, i, 2772 X509_NAME_dup(xn)) == NULL) { 2773 X509_NAME_free(xn); 2774 goto err; 2775 } 2776 } 2777 } 2778 2779 return ret; 2780 err: 2781 SSL_free(ret); 2782 return NULL; 2783 } 2784 2785 void 2786 ssl_clear_cipher_state(SSL *s) 2787 { 2788 tls12_record_layer_clear_read_state(s->internal->rl); 2789 tls12_record_layer_clear_write_state(s->internal->rl); 2790 } 2791 2792 void 2793 ssl_info_callback(const SSL *s, int type, int value) 2794 { 2795 ssl_info_callback_fn *cb; 2796 2797 if ((cb = s->internal->info_callback) == NULL) 2798 cb = s->ctx->internal->info_callback; 2799 if (cb != NULL) 2800 cb(s, type, value); 2801 } 2802 2803 void 2804 ssl_msg_callback(SSL *s, int is_write, int content_type, 2805 const void *msg_buf, size_t msg_len) 2806 { 2807 if (s->internal->msg_callback != NULL) 2808 s->internal->msg_callback(is_write, s->version, content_type, 2809 msg_buf, msg_len, s, s->internal->msg_callback_arg); 2810 } 2811 2812 /* Fix this function so that it takes an optional type parameter */ 2813 X509 * 2814 SSL_get_certificate(const SSL *s) 2815 { 2816 return (s->cert->key->x509); 2817 } 2818 2819 /* Fix this function so that it takes an optional type parameter */ 2820 EVP_PKEY * 2821 SSL_get_privatekey(const SSL *s) 2822 { 2823 return (s->cert->key->privatekey); 2824 } 2825 2826 const SSL_CIPHER * 2827 SSL_get_current_cipher(const SSL *s) 2828 { 2829 if ((s->session != NULL) && (s->session->cipher != NULL)) 2830 return (s->session->cipher); 2831 return (NULL); 2832 } 2833 const void * 2834 SSL_get_current_compression(SSL *s) 2835 { 2836 return (NULL); 2837 } 2838 2839 const void * 2840 SSL_get_current_expansion(SSL *s) 2841 { 2842 return (NULL); 2843 } 2844 2845 size_t 2846 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2847 { 2848 size_t len = sizeof(s->s3->client_random); 2849 2850 if (out == NULL) 2851 return len; 2852 2853 if (len > max_out) 2854 len = max_out; 2855 2856 memcpy(out, s->s3->client_random, len); 2857 2858 return len; 2859 } 2860 2861 size_t 2862 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2863 { 2864 size_t len = sizeof(s->s3->server_random); 2865 2866 if (out == NULL) 2867 return len; 2868 2869 if (len > max_out) 2870 len = max_out; 2871 2872 memcpy(out, s->s3->server_random, len); 2873 2874 return len; 2875 } 2876 2877 int 2878 ssl_init_wbio_buffer(SSL *s, int push) 2879 { 2880 BIO *bbio; 2881 2882 if (s->bbio == NULL) { 2883 bbio = BIO_new(BIO_f_buffer()); 2884 if (bbio == NULL) 2885 return (0); 2886 s->bbio = bbio; 2887 } else { 2888 bbio = s->bbio; 2889 if (s->bbio == s->wbio) 2890 s->wbio = BIO_pop(s->wbio); 2891 } 2892 (void)BIO_reset(bbio); 2893 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2894 if (!BIO_set_read_buffer_size(bbio, 1)) { 2895 SSLerror(s, ERR_R_BUF_LIB); 2896 return (0); 2897 } 2898 if (push) { 2899 if (s->wbio != bbio) 2900 s->wbio = BIO_push(bbio, s->wbio); 2901 } else { 2902 if (s->wbio == bbio) 2903 s->wbio = BIO_pop(bbio); 2904 } 2905 return (1); 2906 } 2907 2908 void 2909 ssl_free_wbio_buffer(SSL *s) 2910 { 2911 if (s == NULL) 2912 return; 2913 2914 if (s->bbio == NULL) 2915 return; 2916 2917 if (s->bbio == s->wbio) { 2918 /* remove buffering */ 2919 s->wbio = BIO_pop(s->wbio); 2920 } 2921 BIO_free(s->bbio); 2922 s->bbio = NULL; 2923 } 2924 2925 void 2926 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2927 { 2928 ctx->internal->quiet_shutdown = mode; 2929 } 2930 2931 int 2932 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2933 { 2934 return (ctx->internal->quiet_shutdown); 2935 } 2936 2937 void 2938 SSL_set_quiet_shutdown(SSL *s, int mode) 2939 { 2940 s->internal->quiet_shutdown = mode; 2941 } 2942 2943 int 2944 SSL_get_quiet_shutdown(const SSL *s) 2945 { 2946 return (s->internal->quiet_shutdown); 2947 } 2948 2949 void 2950 SSL_set_shutdown(SSL *s, int mode) 2951 { 2952 s->internal->shutdown = mode; 2953 } 2954 2955 int 2956 SSL_get_shutdown(const SSL *s) 2957 { 2958 return (s->internal->shutdown); 2959 } 2960 2961 int 2962 SSL_version(const SSL *s) 2963 { 2964 return (s->version); 2965 } 2966 2967 SSL_CTX * 2968 SSL_get_SSL_CTX(const SSL *ssl) 2969 { 2970 return (ssl->ctx); 2971 } 2972 2973 SSL_CTX * 2974 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2975 { 2976 CERT *new_cert; 2977 2978 if (ctx == NULL) 2979 ctx = ssl->initial_ctx; 2980 if (ssl->ctx == ctx) 2981 return (ssl->ctx); 2982 2983 if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 2984 return NULL; 2985 ssl_cert_free(ssl->cert); 2986 ssl->cert = new_cert; 2987 2988 SSL_CTX_up_ref(ctx); 2989 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2990 ssl->ctx = ctx; 2991 2992 return (ssl->ctx); 2993 } 2994 2995 int 2996 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2997 { 2998 return (X509_STORE_set_default_paths(ctx->cert_store)); 2999 } 3000 3001 int 3002 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3003 const char *CApath) 3004 { 3005 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3006 } 3007 3008 int 3009 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 3010 { 3011 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 3012 } 3013 3014 void 3015 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 3016 { 3017 ssl->internal->info_callback = cb; 3018 } 3019 3020 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 3021 { 3022 return (ssl->internal->info_callback); 3023 } 3024 3025 int 3026 SSL_state(const SSL *ssl) 3027 { 3028 return (S3I(ssl)->hs.state); 3029 } 3030 3031 void 3032 SSL_set_state(SSL *ssl, int state) 3033 { 3034 S3I(ssl)->hs.state = state; 3035 } 3036 3037 void 3038 SSL_set_verify_result(SSL *ssl, long arg) 3039 { 3040 ssl->verify_result = arg; 3041 } 3042 3043 long 3044 SSL_get_verify_result(const SSL *ssl) 3045 { 3046 return (ssl->verify_result); 3047 } 3048 3049 int 3050 SSL_verify_client_post_handshake(SSL *ssl) 3051 { 3052 return 0; 3053 } 3054 3055 void 3056 SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val) 3057 { 3058 return; 3059 } 3060 3061 void 3062 SSL_set_post_handshake_auth(SSL *ssl, int val) 3063 { 3064 return; 3065 } 3066 3067 int 3068 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3069 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3070 { 3071 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3072 new_func, dup_func, free_func)); 3073 } 3074 3075 int 3076 SSL_set_ex_data(SSL *s, int idx, void *arg) 3077 { 3078 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3079 } 3080 3081 void * 3082 SSL_get_ex_data(const SSL *s, int idx) 3083 { 3084 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3085 } 3086 3087 int 3088 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3089 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3090 { 3091 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3092 new_func, dup_func, free_func)); 3093 } 3094 3095 int 3096 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3097 { 3098 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 3099 } 3100 3101 void * 3102 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3103 { 3104 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 3105 } 3106 3107 int 3108 ssl_ok(SSL *s) 3109 { 3110 return (1); 3111 } 3112 3113 X509_STORE * 3114 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3115 { 3116 return (ctx->cert_store); 3117 } 3118 3119 void 3120 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3121 { 3122 X509_STORE_free(ctx->cert_store); 3123 ctx->cert_store = store; 3124 } 3125 3126 X509 * 3127 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3128 { 3129 if (ctx->internal->cert == NULL) 3130 return NULL; 3131 3132 return ctx->internal->cert->key->x509; 3133 } 3134 3135 EVP_PKEY * 3136 SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3137 { 3138 if (ctx->internal->cert == NULL) 3139 return NULL; 3140 3141 return ctx->internal->cert->key->privatekey; 3142 } 3143 3144 int 3145 SSL_want(const SSL *s) 3146 { 3147 return (s->internal->rwstate); 3148 } 3149 3150 void 3151 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3152 int keylength)) 3153 { 3154 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3155 } 3156 3157 void 3158 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3159 int keylength)) 3160 { 3161 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3162 } 3163 3164 void 3165 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3166 int keylength)) 3167 { 3168 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3169 } 3170 3171 void 3172 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3173 int keylength)) 3174 { 3175 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3176 } 3177 3178 void 3179 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3180 int is_export, int keylength)) 3181 { 3182 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3183 (void (*)(void))ecdh); 3184 } 3185 3186 void 3187 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3188 int keylength)) 3189 { 3190 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3191 } 3192 3193 3194 void 3195 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3196 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3197 { 3198 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3199 (void (*)(void))cb); 3200 } 3201 3202 void 3203 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3204 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3205 { 3206 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3207 } 3208 3209 void 3210 SSL_set_debug(SSL *s, int debug) 3211 { 3212 s->internal->debug = debug; 3213 } 3214 3215 int 3216 SSL_cache_hit(SSL *s) 3217 { 3218 return (s->internal->hit); 3219 } 3220 3221 int 3222 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3223 { 3224 return ctx->internal->min_proto_version; 3225 } 3226 3227 int 3228 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3229 { 3230 return ssl_version_set_min(ctx->method, version, 3231 ctx->internal->max_tls_version, &ctx->internal->min_tls_version, 3232 &ctx->internal->min_proto_version); 3233 } 3234 3235 int 3236 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3237 { 3238 return ctx->internal->max_proto_version; 3239 } 3240 3241 int 3242 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3243 { 3244 return ssl_version_set_max(ctx->method, version, 3245 ctx->internal->min_tls_version, &ctx->internal->max_tls_version, 3246 &ctx->internal->max_proto_version); 3247 } 3248 3249 int 3250 SSL_get_min_proto_version(SSL *ssl) 3251 { 3252 return ssl->internal->min_proto_version; 3253 } 3254 3255 int 3256 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3257 { 3258 return ssl_version_set_min(ssl->method, version, 3259 ssl->internal->max_tls_version, &ssl->internal->min_tls_version, 3260 &ssl->internal->min_proto_version); 3261 } 3262 int 3263 SSL_get_max_proto_version(SSL *ssl) 3264 { 3265 return ssl->internal->max_proto_version; 3266 } 3267 3268 int 3269 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3270 { 3271 return ssl_version_set_max(ssl->method, version, 3272 ssl->internal->min_tls_version, &ssl->internal->max_tls_version, 3273 &ssl->internal->max_proto_version); 3274 } 3275 3276 const SSL_METHOD * 3277 SSL_CTX_get_ssl_method(const SSL_CTX *ctx) 3278 { 3279 return ctx->method; 3280 } 3281 3282 static int 3283 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3284 { 3285 SSL_CIPHER const *a = a_; 3286 SSL_CIPHER const *b = b_; 3287 return ssl_cipher_id_cmp(a, b); 3288 } 3289 3290 SSL_CIPHER * 3291 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3292 { 3293 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3294 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3295 } 3296