1 /* $OpenBSD: ssl_lib.c,v 1.196 2018/11/19 15:07:29 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 <stdio.h> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #include "bytestring.h" 159 #include "ssl_sigalgs.h" 160 161 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 162 163 int 164 SSL_clear(SSL *s) 165 { 166 if (s->method == NULL) { 167 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 168 return (0); 169 } 170 171 if (ssl_clear_bad_session(s)) { 172 SSL_SESSION_free(s->session); 173 s->session = NULL; 174 } 175 176 s->error = 0; 177 s->internal->hit = 0; 178 s->internal->shutdown = 0; 179 180 if (s->internal->renegotiate) { 181 SSLerror(s, ERR_R_INTERNAL_ERROR); 182 return (0); 183 } 184 185 s->internal->type = 0; 186 187 s->version = s->method->internal->version; 188 s->client_version = s->version; 189 s->internal->rwstate = SSL_NOTHING; 190 s->internal->rstate = SSL_ST_READ_HEADER; 191 192 BUF_MEM_free(s->internal->init_buf); 193 s->internal->init_buf = NULL; 194 195 ssl_clear_cipher_state(s); 196 197 s->internal->first_packet = 0; 198 199 /* 200 * Check to see if we were changed into a different method, if 201 * so, revert back if we are not doing session-id reuse. 202 */ 203 if (!s->internal->in_handshake && (s->session == NULL) && 204 (s->method != s->ctx->method)) { 205 s->method->internal->ssl_free(s); 206 s->method = s->ctx->method; 207 if (!s->method->internal->ssl_new(s)) 208 return (0); 209 } else 210 s->method->internal->ssl_clear(s); 211 212 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 213 214 return (1); 215 } 216 217 /* Used to change an SSL_CTXs default SSL method type */ 218 int 219 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 220 { 221 STACK_OF(SSL_CIPHER) *sk; 222 223 ctx->method = meth; 224 225 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 226 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 227 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 228 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 229 return (0); 230 } 231 return (1); 232 } 233 234 SSL * 235 SSL_new(SSL_CTX *ctx) 236 { 237 SSL *s; 238 239 if (ctx == NULL) { 240 SSLerrorx(SSL_R_NULL_SSL_CTX); 241 return (NULL); 242 } 243 if (ctx->method == NULL) { 244 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 245 return (NULL); 246 } 247 248 if ((s = calloc(1, sizeof(*s))) == NULL) { 249 SSLerrorx(ERR_R_MALLOC_FAILURE); 250 return (NULL); 251 } 252 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 253 free(s); 254 SSLerrorx(ERR_R_MALLOC_FAILURE); 255 return (NULL); 256 } 257 258 s->internal->min_version = ctx->internal->min_version; 259 s->internal->max_version = ctx->internal->max_version; 260 261 s->internal->options = ctx->internal->options; 262 s->internal->mode = ctx->internal->mode; 263 s->internal->max_cert_list = ctx->internal->max_cert_list; 264 265 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 266 goto err; 267 268 s->internal->read_ahead = ctx->internal->read_ahead; 269 s->internal->msg_callback = ctx->internal->msg_callback; 270 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 271 s->verify_mode = ctx->verify_mode; 272 s->sid_ctx_length = ctx->sid_ctx_length; 273 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 274 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 275 s->internal->verify_callback = ctx->internal->default_verify_callback; 276 s->internal->generate_session_id = ctx->internal->generate_session_id; 277 278 s->param = X509_VERIFY_PARAM_new(); 279 if (!s->param) 280 goto err; 281 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 282 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 283 s->max_send_fragment = ctx->internal->max_send_fragment; 284 285 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 286 s->ctx = ctx; 287 s->internal->tlsext_debug_cb = 0; 288 s->internal->tlsext_debug_arg = NULL; 289 s->internal->tlsext_ticket_expected = 0; 290 s->tlsext_status_type = -1; 291 s->internal->tlsext_status_expected = 0; 292 s->internal->tlsext_ocsp_ids = NULL; 293 s->internal->tlsext_ocsp_exts = NULL; 294 s->internal->tlsext_ocsp_resp = NULL; 295 s->internal->tlsext_ocsp_resplen = -1; 296 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 297 s->initial_ctx = ctx; 298 299 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 300 s->internal->tlsext_ecpointformatlist = 301 calloc(ctx->internal->tlsext_ecpointformatlist_length, 302 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 303 if (s->internal->tlsext_ecpointformatlist == NULL) 304 goto err; 305 memcpy(s->internal->tlsext_ecpointformatlist, 306 ctx->internal->tlsext_ecpointformatlist, 307 ctx->internal->tlsext_ecpointformatlist_length * 308 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 309 s->internal->tlsext_ecpointformatlist_length = 310 ctx->internal->tlsext_ecpointformatlist_length; 311 } 312 if (ctx->internal->tlsext_supportedgroups != NULL) { 313 s->internal->tlsext_supportedgroups = 314 calloc(ctx->internal->tlsext_supportedgroups_length, 315 sizeof(ctx->internal->tlsext_supportedgroups[0])); 316 if (s->internal->tlsext_supportedgroups == NULL) 317 goto err; 318 memcpy(s->internal->tlsext_supportedgroups, 319 ctx->internal->tlsext_supportedgroups, 320 ctx->internal->tlsext_supportedgroups_length * 321 sizeof(ctx->internal->tlsext_supportedgroups[0])); 322 s->internal->tlsext_supportedgroups_length = 323 ctx->internal->tlsext_supportedgroups_length; 324 } 325 326 if (s->ctx->internal->alpn_client_proto_list != NULL) { 327 s->internal->alpn_client_proto_list = 328 malloc(s->ctx->internal->alpn_client_proto_list_len); 329 if (s->internal->alpn_client_proto_list == NULL) 330 goto err; 331 memcpy(s->internal->alpn_client_proto_list, 332 s->ctx->internal->alpn_client_proto_list, 333 s->ctx->internal->alpn_client_proto_list_len); 334 s->internal->alpn_client_proto_list_len = 335 s->ctx->internal->alpn_client_proto_list_len; 336 } 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 342 if (!s->method->internal->ssl_new(s)) 343 goto err; 344 345 s->references = 1; 346 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 347 348 SSL_clear(s); 349 350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 351 352 return (s); 353 354 err: 355 SSL_free(s); 356 SSLerrorx(ERR_R_MALLOC_FAILURE); 357 return (NULL); 358 } 359 360 int 361 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 362 unsigned int sid_ctx_len) 363 { 364 if (sid_ctx_len > sizeof ctx->sid_ctx) { 365 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 366 return (0); 367 } 368 ctx->sid_ctx_length = sid_ctx_len; 369 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 370 371 return (1); 372 } 373 374 int 375 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 376 unsigned int sid_ctx_len) 377 { 378 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 379 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 380 return (0); 381 } 382 ssl->sid_ctx_length = sid_ctx_len; 383 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 384 385 return (1); 386 } 387 388 int 389 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 390 { 391 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 392 ctx->internal->generate_session_id = cb; 393 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 394 return (1); 395 } 396 397 int 398 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 399 { 400 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 401 ssl->internal->generate_session_id = cb; 402 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 403 return (1); 404 } 405 406 int 407 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 408 unsigned int id_len) 409 { 410 /* 411 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 412 * shows how we can "construct" a session to give us the desired 413 * check - ie. to find if there's a session in the hash table 414 * that would conflict with any new session built out of this 415 * id/id_len and the ssl_version in use by this SSL. 416 */ 417 SSL_SESSION r, *p; 418 419 if (id_len > sizeof r.session_id) 420 return (0); 421 422 r.ssl_version = ssl->version; 423 r.session_id_length = id_len; 424 memcpy(r.session_id, id, id_len); 425 426 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 427 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 428 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 429 return (p != NULL); 430 } 431 432 int 433 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 434 { 435 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 436 } 437 438 int 439 SSL_set_purpose(SSL *s, int purpose) 440 { 441 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 442 } 443 444 int 445 SSL_CTX_set_trust(SSL_CTX *s, int trust) 446 { 447 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 448 } 449 450 int 451 SSL_set_trust(SSL *s, int trust) 452 { 453 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 454 } 455 456 int 457 SSL_set1_host(SSL *s, const char *hostname) 458 { 459 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 460 } 461 462 X509_VERIFY_PARAM * 463 SSL_CTX_get0_param(SSL_CTX *ctx) 464 { 465 return (ctx->param); 466 } 467 468 int 469 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 470 { 471 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 472 } 473 474 X509_VERIFY_PARAM * 475 SSL_get0_param(SSL *ssl) 476 { 477 return (ssl->param); 478 } 479 480 int 481 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482 { 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484 } 485 486 void 487 SSL_free(SSL *s) 488 { 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 BUF_MEM_free(s->internal->init_buf); 516 517 /* add extra stuff */ 518 sk_SSL_CIPHER_free(s->cipher_list); 519 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 520 521 /* Make the next call work :-) */ 522 if (s->session != NULL) { 523 ssl_clear_bad_session(s); 524 SSL_SESSION_free(s->session); 525 } 526 527 ssl_clear_cipher_state(s); 528 529 ssl_cert_free(s->cert); 530 531 free(s->tlsext_hostname); 532 SSL_CTX_free(s->initial_ctx); 533 534 free(s->internal->tlsext_ecpointformatlist); 535 free(s->internal->tlsext_supportedgroups); 536 537 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 538 X509_EXTENSION_free); 539 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 540 free(s->internal->tlsext_ocsp_resp); 541 542 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 543 544 if (s->method != NULL) 545 s->method->internal->ssl_free(s); 546 547 SSL_CTX_free(s->ctx); 548 549 free(s->internal->alpn_client_proto_list); 550 551 #ifndef OPENSSL_NO_SRTP 552 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 553 #endif 554 555 free(s->internal); 556 free(s); 557 } 558 559 int 560 SSL_up_ref(SSL *s) 561 { 562 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 563 return (refs > 1) ? 1 : 0; 564 } 565 566 void 567 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 568 { 569 /* If the output buffering BIO is still in place, remove it */ 570 if (s->bbio != NULL) { 571 if (s->wbio == s->bbio) { 572 s->wbio = s->wbio->next_bio; 573 s->bbio->next_bio = NULL; 574 } 575 } 576 577 if (s->rbio != rbio && s->rbio != s->wbio) 578 BIO_free_all(s->rbio); 579 if (s->wbio != wbio) 580 BIO_free_all(s->wbio); 581 s->rbio = rbio; 582 s->wbio = wbio; 583 } 584 585 BIO * 586 SSL_get_rbio(const SSL *s) 587 { 588 return (s->rbio); 589 } 590 591 BIO * 592 SSL_get_wbio(const SSL *s) 593 { 594 return (s->wbio); 595 } 596 597 int 598 SSL_get_fd(const SSL *s) 599 { 600 return (SSL_get_rfd(s)); 601 } 602 603 int 604 SSL_get_rfd(const SSL *s) 605 { 606 int ret = -1; 607 BIO *b, *r; 608 609 b = SSL_get_rbio(s); 610 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 611 if (r != NULL) 612 BIO_get_fd(r, &ret); 613 return (ret); 614 } 615 616 int 617 SSL_get_wfd(const SSL *s) 618 { 619 int ret = -1; 620 BIO *b, *r; 621 622 b = SSL_get_wbio(s); 623 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 624 if (r != NULL) 625 BIO_get_fd(r, &ret); 626 return (ret); 627 } 628 629 int 630 SSL_set_fd(SSL *s, int fd) 631 { 632 int ret = 0; 633 BIO *bio = NULL; 634 635 bio = BIO_new(BIO_s_socket()); 636 637 if (bio == NULL) { 638 SSLerror(s, ERR_R_BUF_LIB); 639 goto err; 640 } 641 BIO_set_fd(bio, fd, BIO_NOCLOSE); 642 SSL_set_bio(s, bio, bio); 643 ret = 1; 644 err: 645 return (ret); 646 } 647 648 int 649 SSL_set_wfd(SSL *s, int fd) 650 { 651 int ret = 0; 652 BIO *bio = NULL; 653 654 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 655 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 656 bio = BIO_new(BIO_s_socket()); 657 658 if (bio == NULL) { 659 SSLerror(s, ERR_R_BUF_LIB); 660 goto err; 661 } 662 BIO_set_fd(bio, fd, BIO_NOCLOSE); 663 SSL_set_bio(s, SSL_get_rbio(s), bio); 664 } else 665 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 666 ret = 1; 667 err: 668 return (ret); 669 } 670 671 int 672 SSL_set_rfd(SSL *s, int fd) 673 { 674 int ret = 0; 675 BIO *bio = NULL; 676 677 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 678 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 679 bio = BIO_new(BIO_s_socket()); 680 681 if (bio == NULL) { 682 SSLerror(s, ERR_R_BUF_LIB); 683 goto err; 684 } 685 BIO_set_fd(bio, fd, BIO_NOCLOSE); 686 SSL_set_bio(s, bio, SSL_get_wbio(s)); 687 } else 688 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 689 ret = 1; 690 err: 691 return (ret); 692 } 693 694 695 /* return length of latest Finished message we sent, copy to 'buf' */ 696 size_t 697 SSL_get_finished(const SSL *s, void *buf, size_t count) 698 { 699 size_t ret = 0; 700 701 if (s->s3 != NULL) { 702 ret = S3I(s)->tmp.finish_md_len; 703 if (count > ret) 704 count = ret; 705 memcpy(buf, S3I(s)->tmp.finish_md, count); 706 } 707 return (ret); 708 } 709 710 /* return length of latest Finished message we expected, copy to 'buf' */ 711 size_t 712 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 713 { 714 size_t ret = 0; 715 716 if (s->s3 != NULL) { 717 ret = S3I(s)->tmp.peer_finish_md_len; 718 if (count > ret) 719 count = ret; 720 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 721 } 722 return (ret); 723 } 724 725 726 int 727 SSL_get_verify_mode(const SSL *s) 728 { 729 return (s->verify_mode); 730 } 731 732 int 733 SSL_get_verify_depth(const SSL *s) 734 { 735 return (X509_VERIFY_PARAM_get_depth(s->param)); 736 } 737 738 int 739 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 740 { 741 return (s->internal->verify_callback); 742 } 743 744 int 745 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 746 { 747 return (ctx->verify_mode); 748 } 749 750 int 751 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 752 { 753 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 754 } 755 756 int 757 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 758 { 759 return (ctx->internal->default_verify_callback); 760 } 761 762 void 763 SSL_set_verify(SSL *s, int mode, 764 int (*callback)(int ok, X509_STORE_CTX *ctx)) 765 { 766 s->verify_mode = mode; 767 if (callback != NULL) 768 s->internal->verify_callback = callback; 769 } 770 771 void 772 SSL_set_verify_depth(SSL *s, int depth) 773 { 774 X509_VERIFY_PARAM_set_depth(s->param, depth); 775 } 776 777 void 778 SSL_set_read_ahead(SSL *s, int yes) 779 { 780 s->internal->read_ahead = yes; 781 } 782 783 int 784 SSL_get_read_ahead(const SSL *s) 785 { 786 return (s->internal->read_ahead); 787 } 788 789 int 790 SSL_pending(const SSL *s) 791 { 792 /* 793 * SSL_pending cannot work properly if read-ahead is enabled 794 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 795 * and it is impossible to fix since SSL_pending cannot report 796 * errors that may be observed while scanning the new data. 797 * (Note that SSL_pending() is often used as a boolean value, 798 * so we'd better not return -1.) 799 */ 800 return (ssl3_pending(s)); 801 } 802 803 X509 * 804 SSL_get_peer_certificate(const SSL *s) 805 { 806 X509 *r; 807 808 if ((s == NULL) || (s->session == NULL)) 809 r = NULL; 810 else 811 r = s->session->peer; 812 813 if (r == NULL) 814 return (r); 815 816 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 817 818 return (r); 819 } 820 821 STACK_OF(X509) * 822 SSL_get_peer_cert_chain(const SSL *s) 823 { 824 STACK_OF(X509) *r; 825 826 if ((s == NULL) || (s->session == NULL) || 827 (SSI(s)->sess_cert == NULL)) 828 r = NULL; 829 else 830 r = SSI(s)->sess_cert->cert_chain; 831 832 /* 833 * If we are a client, cert_chain includes the peer's own 834 * certificate; 835 * if we are a server, it does not. 836 */ 837 return (r); 838 } 839 840 /* 841 * Now in theory, since the calling process own 't' it should be safe to 842 * modify. We need to be able to read f without being hassled 843 */ 844 int 845 SSL_copy_session_id(SSL *t, const SSL *f) 846 { 847 CERT *tmp; 848 849 /* Do we need to do SSL locking? */ 850 if (!SSL_set_session(t, SSL_get_session(f))) 851 return 0; 852 853 /* What if we are set up for one protocol but want to talk another? */ 854 if (t->method != f->method) { 855 t->method->internal->ssl_free(t); 856 t->method = f->method; 857 if (!t->method->internal->ssl_new(t)) 858 return 0; 859 } 860 861 tmp = t->cert; 862 if (f->cert != NULL) { 863 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 864 t->cert = f->cert; 865 } else 866 t->cert = NULL; 867 ssl_cert_free(tmp); 868 869 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 870 return 0; 871 872 return 1; 873 } 874 875 /* Fix this so it checks all the valid key/cert options */ 876 int 877 SSL_CTX_check_private_key(const SSL_CTX *ctx) 878 { 879 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 880 (ctx->internal->cert->key->x509 == NULL)) { 881 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 882 return (0); 883 } 884 if (ctx->internal->cert->key->privatekey == NULL) { 885 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 886 return (0); 887 } 888 return (X509_check_private_key(ctx->internal->cert->key->x509, 889 ctx->internal->cert->key->privatekey)); 890 } 891 892 /* Fix this function so that it takes an optional type parameter */ 893 int 894 SSL_check_private_key(const SSL *ssl) 895 { 896 if (ssl == NULL) { 897 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 898 return (0); 899 } 900 if (ssl->cert == NULL) { 901 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 902 return (0); 903 } 904 if (ssl->cert->key->x509 == NULL) { 905 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ssl->cert->key->privatekey == NULL) { 909 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 910 return (0); 911 } 912 return (X509_check_private_key(ssl->cert->key->x509, 913 ssl->cert->key->privatekey)); 914 } 915 916 int 917 SSL_accept(SSL *s) 918 { 919 if (s->internal->handshake_func == NULL) 920 SSL_set_accept_state(s); /* Not properly initialized yet */ 921 922 return (s->method->internal->ssl_accept(s)); 923 } 924 925 int 926 SSL_connect(SSL *s) 927 { 928 if (s->internal->handshake_func == NULL) 929 SSL_set_connect_state(s); /* Not properly initialized yet */ 930 931 return (s->method->internal->ssl_connect(s)); 932 } 933 934 int 935 SSL_is_server(const SSL *s) 936 { 937 return s->server; 938 } 939 940 long 941 SSL_get_default_timeout(const SSL *s) 942 { 943 return (s->method->internal->get_timeout()); 944 } 945 946 int 947 SSL_read(SSL *s, void *buf, int num) 948 { 949 if (s->internal->handshake_func == NULL) { 950 SSLerror(s, SSL_R_UNINITIALIZED); 951 return (-1); 952 } 953 954 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 955 s->internal->rwstate = SSL_NOTHING; 956 return (0); 957 } 958 return ssl3_read(s, buf, num); 959 } 960 961 int 962 SSL_peek(SSL *s, void *buf, int num) 963 { 964 if (s->internal->handshake_func == NULL) { 965 SSLerror(s, SSL_R_UNINITIALIZED); 966 return (-1); 967 } 968 969 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 970 return (0); 971 } 972 return ssl3_peek(s, buf, num); 973 } 974 975 int 976 SSL_write(SSL *s, const void *buf, int num) 977 { 978 if (s->internal->handshake_func == NULL) { 979 SSLerror(s, SSL_R_UNINITIALIZED); 980 return (-1); 981 } 982 983 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 984 s->internal->rwstate = SSL_NOTHING; 985 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 986 return (-1); 987 } 988 return ssl3_write(s, buf, num); 989 } 990 991 int 992 SSL_shutdown(SSL *s) 993 { 994 /* 995 * Note that this function behaves differently from what one might 996 * expect. Return values are 0 for no success (yet), 997 * 1 for success; but calling it once is usually not enough, 998 * even if blocking I/O is used (see ssl3_shutdown). 999 */ 1000 1001 if (s->internal->handshake_func == NULL) { 1002 SSLerror(s, SSL_R_UNINITIALIZED); 1003 return (-1); 1004 } 1005 1006 if (s != NULL && !SSL_in_init(s)) 1007 return (ssl3_shutdown(s)); 1008 1009 return (1); 1010 } 1011 1012 int 1013 SSL_renegotiate(SSL *s) 1014 { 1015 if (s->internal->renegotiate == 0) 1016 s->internal->renegotiate = 1; 1017 1018 s->internal->new_session = 1; 1019 1020 return (s->method->internal->ssl_renegotiate(s)); 1021 } 1022 1023 int 1024 SSL_renegotiate_abbreviated(SSL *s) 1025 { 1026 if (s->internal->renegotiate == 0) 1027 s->internal->renegotiate = 1; 1028 1029 s->internal->new_session = 0; 1030 1031 return (s->method->internal->ssl_renegotiate(s)); 1032 } 1033 1034 int 1035 SSL_renegotiate_pending(SSL *s) 1036 { 1037 /* 1038 * Becomes true when negotiation is requested; 1039 * false again once a handshake has finished. 1040 */ 1041 return (s->internal->renegotiate != 0); 1042 } 1043 1044 long 1045 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1046 { 1047 long l; 1048 1049 switch (cmd) { 1050 case SSL_CTRL_GET_READ_AHEAD: 1051 return (s->internal->read_ahead); 1052 case SSL_CTRL_SET_READ_AHEAD: 1053 l = s->internal->read_ahead; 1054 s->internal->read_ahead = larg; 1055 return (l); 1056 1057 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1058 s->internal->msg_callback_arg = parg; 1059 return (1); 1060 1061 case SSL_CTRL_OPTIONS: 1062 return (s->internal->options|=larg); 1063 case SSL_CTRL_CLEAR_OPTIONS: 1064 return (s->internal->options&=~larg); 1065 case SSL_CTRL_MODE: 1066 return (s->internal->mode|=larg); 1067 case SSL_CTRL_CLEAR_MODE: 1068 return (s->internal->mode &=~larg); 1069 case SSL_CTRL_GET_MAX_CERT_LIST: 1070 return (s->internal->max_cert_list); 1071 case SSL_CTRL_SET_MAX_CERT_LIST: 1072 l = s->internal->max_cert_list; 1073 s->internal->max_cert_list = larg; 1074 return (l); 1075 case SSL_CTRL_SET_MTU: 1076 #ifndef OPENSSL_NO_DTLS1 1077 if (larg < (long)dtls1_min_mtu()) 1078 return (0); 1079 #endif 1080 if (SSL_IS_DTLS(s)) { 1081 D1I(s)->mtu = larg; 1082 return (larg); 1083 } 1084 return (0); 1085 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1086 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1087 return (0); 1088 s->max_send_fragment = larg; 1089 return (1); 1090 case SSL_CTRL_GET_RI_SUPPORT: 1091 if (s->s3) 1092 return (S3I(s)->send_connection_binding); 1093 else return (0); 1094 default: 1095 if (SSL_IS_DTLS(s)) 1096 return dtls1_ctrl(s, cmd, larg, parg); 1097 return ssl3_ctrl(s, cmd, larg, parg); 1098 } 1099 } 1100 1101 long 1102 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1103 { 1104 switch (cmd) { 1105 case SSL_CTRL_SET_MSG_CALLBACK: 1106 s->internal->msg_callback = (void (*)(int write_p, int version, 1107 int content_type, const void *buf, size_t len, 1108 SSL *ssl, void *arg))(fp); 1109 return (1); 1110 1111 default: 1112 return (ssl3_callback_ctrl(s, cmd, fp)); 1113 } 1114 } 1115 1116 struct lhash_st_SSL_SESSION * 1117 SSL_CTX_sessions(SSL_CTX *ctx) 1118 { 1119 return (ctx->internal->sessions); 1120 } 1121 1122 long 1123 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1124 { 1125 long l; 1126 1127 switch (cmd) { 1128 case SSL_CTRL_GET_READ_AHEAD: 1129 return (ctx->internal->read_ahead); 1130 case SSL_CTRL_SET_READ_AHEAD: 1131 l = ctx->internal->read_ahead; 1132 ctx->internal->read_ahead = larg; 1133 return (l); 1134 1135 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1136 ctx->internal->msg_callback_arg = parg; 1137 return (1); 1138 1139 case SSL_CTRL_GET_MAX_CERT_LIST: 1140 return (ctx->internal->max_cert_list); 1141 case SSL_CTRL_SET_MAX_CERT_LIST: 1142 l = ctx->internal->max_cert_list; 1143 ctx->internal->max_cert_list = larg; 1144 return (l); 1145 1146 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1147 l = ctx->internal->session_cache_size; 1148 ctx->internal->session_cache_size = larg; 1149 return (l); 1150 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1151 return (ctx->internal->session_cache_size); 1152 case SSL_CTRL_SET_SESS_CACHE_MODE: 1153 l = ctx->internal->session_cache_mode; 1154 ctx->internal->session_cache_mode = larg; 1155 return (l); 1156 case SSL_CTRL_GET_SESS_CACHE_MODE: 1157 return (ctx->internal->session_cache_mode); 1158 1159 case SSL_CTRL_SESS_NUMBER: 1160 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1161 case SSL_CTRL_SESS_CONNECT: 1162 return (ctx->internal->stats.sess_connect); 1163 case SSL_CTRL_SESS_CONNECT_GOOD: 1164 return (ctx->internal->stats.sess_connect_good); 1165 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1166 return (ctx->internal->stats.sess_connect_renegotiate); 1167 case SSL_CTRL_SESS_ACCEPT: 1168 return (ctx->internal->stats.sess_accept); 1169 case SSL_CTRL_SESS_ACCEPT_GOOD: 1170 return (ctx->internal->stats.sess_accept_good); 1171 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1172 return (ctx->internal->stats.sess_accept_renegotiate); 1173 case SSL_CTRL_SESS_HIT: 1174 return (ctx->internal->stats.sess_hit); 1175 case SSL_CTRL_SESS_CB_HIT: 1176 return (ctx->internal->stats.sess_cb_hit); 1177 case SSL_CTRL_SESS_MISSES: 1178 return (ctx->internal->stats.sess_miss); 1179 case SSL_CTRL_SESS_TIMEOUTS: 1180 return (ctx->internal->stats.sess_timeout); 1181 case SSL_CTRL_SESS_CACHE_FULL: 1182 return (ctx->internal->stats.sess_cache_full); 1183 case SSL_CTRL_OPTIONS: 1184 return (ctx->internal->options|=larg); 1185 case SSL_CTRL_CLEAR_OPTIONS: 1186 return (ctx->internal->options&=~larg); 1187 case SSL_CTRL_MODE: 1188 return (ctx->internal->mode|=larg); 1189 case SSL_CTRL_CLEAR_MODE: 1190 return (ctx->internal->mode&=~larg); 1191 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1192 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1193 return (0); 1194 ctx->internal->max_send_fragment = larg; 1195 return (1); 1196 default: 1197 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1198 } 1199 } 1200 1201 long 1202 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1203 { 1204 switch (cmd) { 1205 case SSL_CTRL_SET_MSG_CALLBACK: 1206 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1207 int content_type, const void *buf, size_t len, SSL *ssl, 1208 void *arg))(fp); 1209 return (1); 1210 1211 default: 1212 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1213 } 1214 } 1215 1216 int 1217 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1218 { 1219 long l; 1220 1221 l = a->id - b->id; 1222 if (l == 0L) 1223 return (0); 1224 else 1225 return ((l > 0) ? 1:-1); 1226 } 1227 1228 int 1229 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1230 const SSL_CIPHER * const *bp) 1231 { 1232 long l; 1233 1234 l = (*ap)->id - (*bp)->id; 1235 if (l == 0L) 1236 return (0); 1237 else 1238 return ((l > 0) ? 1:-1); 1239 } 1240 1241 /* 1242 * Return a STACK of the ciphers available for the SSL and in order of 1243 * preference. 1244 */ 1245 STACK_OF(SSL_CIPHER) * 1246 SSL_get_ciphers(const SSL *s) 1247 { 1248 if (s != NULL) { 1249 if (s->cipher_list != NULL) { 1250 return (s->cipher_list); 1251 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1252 return (s->ctx->cipher_list); 1253 } 1254 } 1255 return (NULL); 1256 } 1257 1258 /* 1259 * Return a STACK of the ciphers available for the SSL and in order of 1260 * algorithm id. 1261 */ 1262 STACK_OF(SSL_CIPHER) * 1263 ssl_get_ciphers_by_id(SSL *s) 1264 { 1265 if (s != NULL) { 1266 if (s->internal->cipher_list_by_id != NULL) { 1267 return (s->internal->cipher_list_by_id); 1268 } else if ((s->ctx != NULL) && 1269 (s->ctx->internal->cipher_list_by_id != NULL)) { 1270 return (s->ctx->internal->cipher_list_by_id); 1271 } 1272 } 1273 return (NULL); 1274 } 1275 1276 /* See if we have any ECC cipher suites. */ 1277 int 1278 ssl_has_ecc_ciphers(SSL *s) 1279 { 1280 STACK_OF(SSL_CIPHER) *ciphers; 1281 unsigned long alg_k, alg_a; 1282 SSL_CIPHER *cipher; 1283 int i; 1284 1285 if (s->version == DTLS1_VERSION) 1286 return 0; 1287 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1288 return 0; 1289 1290 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1291 cipher = sk_SSL_CIPHER_value(ciphers, i); 1292 1293 alg_k = cipher->algorithm_mkey; 1294 alg_a = cipher->algorithm_auth; 1295 1296 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1297 return 1; 1298 } 1299 1300 return 0; 1301 } 1302 1303 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1304 const char * 1305 SSL_get_cipher_list(const SSL *s, int n) 1306 { 1307 SSL_CIPHER *c; 1308 STACK_OF(SSL_CIPHER) *sk; 1309 1310 if (s == NULL) 1311 return (NULL); 1312 sk = SSL_get_ciphers(s); 1313 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1314 return (NULL); 1315 c = sk_SSL_CIPHER_value(sk, n); 1316 if (c == NULL) 1317 return (NULL); 1318 return (c->name); 1319 } 1320 1321 STACK_OF(SSL_CIPHER) * 1322 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1323 { 1324 return ctx->cipher_list; 1325 } 1326 1327 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1328 int 1329 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1330 { 1331 STACK_OF(SSL_CIPHER) *sk; 1332 1333 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1334 &ctx->internal->cipher_list_by_id, str); 1335 /* 1336 * ssl_create_cipher_list may return an empty stack if it 1337 * was unable to find a cipher matching the given rule string 1338 * (for example if the rule string specifies a cipher which 1339 * has been disabled). This is not an error as far as 1340 * ssl_create_cipher_list is concerned, and hence 1341 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1342 * updated. 1343 */ 1344 if (sk == NULL) 1345 return (0); 1346 else if (sk_SSL_CIPHER_num(sk) == 0) { 1347 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1348 return (0); 1349 } 1350 return (1); 1351 } 1352 1353 /* Specify the ciphers to be used by the SSL. */ 1354 int 1355 SSL_set_cipher_list(SSL *s, const char *str) 1356 { 1357 STACK_OF(SSL_CIPHER) *sk; 1358 1359 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1360 &s->internal->cipher_list_by_id, str); 1361 /* see comment in SSL_CTX_set_cipher_list */ 1362 if (sk == NULL) 1363 return (0); 1364 else if (sk_SSL_CIPHER_num(sk) == 0) { 1365 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1366 return (0); 1367 } 1368 return (1); 1369 } 1370 1371 /* works well for SSLv2, not so good for SSLv3 */ 1372 char * 1373 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1374 { 1375 char *end; 1376 STACK_OF(SSL_CIPHER) *sk; 1377 SSL_CIPHER *c; 1378 size_t curlen = 0; 1379 int i; 1380 1381 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1382 return (NULL); 1383 1384 sk = s->session->ciphers; 1385 if (sk_SSL_CIPHER_num(sk) == 0) 1386 return (NULL); 1387 1388 buf[0] = '\0'; 1389 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1390 c = sk_SSL_CIPHER_value(sk, i); 1391 end = buf + curlen; 1392 if (strlcat(buf, c->name, len) >= len || 1393 (curlen = strlcat(buf, ":", len)) >= len) { 1394 /* remove truncated cipher from list */ 1395 *end = '\0'; 1396 break; 1397 } 1398 } 1399 /* remove trailing colon */ 1400 if ((end = strrchr(buf, ':')) != NULL) 1401 *end = '\0'; 1402 return (buf); 1403 } 1404 1405 int 1406 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1407 { 1408 SSL_CIPHER *cipher; 1409 int num_ciphers = 0; 1410 int i; 1411 1412 if (ciphers == NULL) 1413 return 0; 1414 1415 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1416 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1417 return 0; 1418 1419 /* Skip TLS v1.3 only ciphersuites if lower than v1.3 */ 1420 if ((cipher->algorithm_ssl & SSL_TLSV1_3) && 1421 (TLS1_get_client_version(s) < TLS1_3_VERSION)) 1422 continue; 1423 1424 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1425 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1426 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1427 continue; 1428 1429 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1430 return 0; 1431 1432 num_ciphers++; 1433 } 1434 1435 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1436 if (num_ciphers > 0 && !s->internal->renegotiate) { 1437 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1438 return 0; 1439 } 1440 1441 if (!CBB_flush(cbb)) 1442 return 0; 1443 1444 return 1; 1445 } 1446 1447 STACK_OF(SSL_CIPHER) * 1448 ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1449 { 1450 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1451 const SSL_CIPHER *cipher; 1452 uint16_t cipher_value, max_version; 1453 unsigned long cipher_id; 1454 1455 if (s->s3 != NULL) 1456 S3I(s)->send_connection_binding = 0; 1457 1458 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1459 SSLerror(s, ERR_R_MALLOC_FAILURE); 1460 goto err; 1461 } 1462 1463 while (CBS_len(cbs) > 0) { 1464 if (!CBS_get_u16(cbs, &cipher_value)) { 1465 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1466 goto err; 1467 } 1468 1469 cipher_id = SSL3_CK_ID | cipher_value; 1470 1471 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1472 /* 1473 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1474 * renegotiating. 1475 */ 1476 if (s->internal->renegotiate) { 1477 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1478 ssl3_send_alert(s, SSL3_AL_FATAL, 1479 SSL_AD_HANDSHAKE_FAILURE); 1480 1481 goto err; 1482 } 1483 S3I(s)->send_connection_binding = 1; 1484 continue; 1485 } 1486 1487 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1488 /* 1489 * TLS_FALLBACK_SCSV indicates that the client 1490 * previously tried a higher protocol version. 1491 * Fail if the current version is an unexpected 1492 * downgrade. 1493 */ 1494 max_version = ssl_max_server_version(s); 1495 if (max_version == 0 || s->version < max_version) { 1496 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1497 if (s->s3 != NULL) 1498 ssl3_send_alert(s, SSL3_AL_FATAL, 1499 SSL_AD_INAPPROPRIATE_FALLBACK); 1500 goto err; 1501 } 1502 continue; 1503 } 1504 1505 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1506 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1507 SSLerror(s, ERR_R_MALLOC_FAILURE); 1508 goto err; 1509 } 1510 } 1511 } 1512 1513 return (ciphers); 1514 1515 err: 1516 sk_SSL_CIPHER_free(ciphers); 1517 1518 return (NULL); 1519 } 1520 1521 1522 /* 1523 * Return a servername extension value if provided in Client Hello, or NULL. 1524 * So far, only host_name types are defined (RFC 3546). 1525 */ 1526 const char * 1527 SSL_get_servername(const SSL *s, const int type) 1528 { 1529 if (type != TLSEXT_NAMETYPE_host_name) 1530 return (NULL); 1531 1532 return (s->session && !s->tlsext_hostname ? 1533 s->session->tlsext_hostname : 1534 s->tlsext_hostname); 1535 } 1536 1537 int 1538 SSL_get_servername_type(const SSL *s) 1539 { 1540 if (s->session && 1541 (!s->tlsext_hostname ? 1542 s->session->tlsext_hostname : s->tlsext_hostname)) 1543 return (TLSEXT_NAMETYPE_host_name); 1544 return (-1); 1545 } 1546 1547 /* 1548 * SSL_select_next_proto implements standard protocol selection. It is 1549 * expected that this function is called from the callback set by 1550 * SSL_CTX_set_alpn_select_cb. 1551 * 1552 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1553 * strings. The length byte itself is not included in the length. A byte 1554 * string of length 0 is invalid. No byte string may be truncated. 1555 * 1556 * It returns either: 1557 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1558 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1559 */ 1560 int 1561 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1562 const unsigned char *server, unsigned int server_len, 1563 const unsigned char *client, unsigned int client_len) 1564 { 1565 unsigned int i, j; 1566 const unsigned char *result; 1567 int status = OPENSSL_NPN_UNSUPPORTED; 1568 1569 /* 1570 * For each protocol in server preference order, 1571 * see if we support it. 1572 */ 1573 for (i = 0; i < server_len; ) { 1574 for (j = 0; j < client_len; ) { 1575 if (server[i] == client[j] && 1576 memcmp(&server[i + 1], 1577 &client[j + 1], server[i]) == 0) { 1578 /* We found a match */ 1579 result = &server[i]; 1580 status = OPENSSL_NPN_NEGOTIATED; 1581 goto found; 1582 } 1583 j += client[j]; 1584 j++; 1585 } 1586 i += server[i]; 1587 i++; 1588 } 1589 1590 /* There's no overlap between our protocols and the server's list. */ 1591 result = client; 1592 status = OPENSSL_NPN_NO_OVERLAP; 1593 1594 found: 1595 *out = (unsigned char *) result + 1; 1596 *outlen = result[0]; 1597 return (status); 1598 } 1599 1600 /* SSL_get0_next_proto_negotiated is deprecated. */ 1601 void 1602 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1603 unsigned *len) 1604 { 1605 *data = NULL; 1606 *len = 0; 1607 } 1608 1609 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1610 void 1611 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1612 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1613 { 1614 } 1615 1616 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1617 void 1618 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1619 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1620 unsigned int inlen, void *arg), void *arg) 1621 { 1622 } 1623 1624 /* 1625 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1626 * protocols, which must be in wire-format (i.e. a series of non-empty, 1627 * 8-bit length-prefixed strings). Returns 0 on success. 1628 */ 1629 int 1630 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1631 unsigned int protos_len) 1632 { 1633 int failed = 1; 1634 1635 if (protos == NULL || protos_len == 0) 1636 goto err; 1637 1638 free(ctx->internal->alpn_client_proto_list); 1639 ctx->internal->alpn_client_proto_list = NULL; 1640 ctx->internal->alpn_client_proto_list_len = 0; 1641 1642 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1643 == NULL) 1644 goto err; 1645 ctx->internal->alpn_client_proto_list_len = protos_len; 1646 1647 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1648 1649 failed = 0; 1650 1651 err: 1652 /* NOTE: Return values are the reverse of what you expect. */ 1653 return (failed); 1654 } 1655 1656 /* 1657 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1658 * protocols, which must be in wire-format (i.e. a series of non-empty, 1659 * 8-bit length-prefixed strings). Returns 0 on success. 1660 */ 1661 int 1662 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1663 unsigned int protos_len) 1664 { 1665 int failed = 1; 1666 1667 if (protos == NULL || protos_len == 0) 1668 goto err; 1669 1670 free(ssl->internal->alpn_client_proto_list); 1671 ssl->internal->alpn_client_proto_list = NULL; 1672 ssl->internal->alpn_client_proto_list_len = 0; 1673 1674 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1675 == NULL) 1676 goto err; 1677 ssl->internal->alpn_client_proto_list_len = protos_len; 1678 1679 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1680 1681 failed = 0; 1682 1683 err: 1684 /* NOTE: Return values are the reverse of what you expect. */ 1685 return (failed); 1686 } 1687 1688 /* 1689 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1690 * ClientHello processing in order to select an ALPN protocol from the 1691 * client's list of offered protocols. 1692 */ 1693 void 1694 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1695 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1696 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1697 { 1698 ctx->internal->alpn_select_cb = cb; 1699 ctx->internal->alpn_select_cb_arg = arg; 1700 } 1701 1702 /* 1703 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1704 * it sets data to point to len bytes of protocol name (not including the 1705 * leading length-prefix byte). If the server didn't respond with* a negotiated 1706 * protocol then len will be zero. 1707 */ 1708 void 1709 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1710 unsigned *len) 1711 { 1712 *data = NULL; 1713 *len = 0; 1714 1715 if (ssl->s3 != NULL) { 1716 *data = ssl->s3->internal->alpn_selected; 1717 *len = ssl->s3->internal->alpn_selected_len; 1718 } 1719 } 1720 1721 int 1722 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1723 const char *label, size_t llen, const unsigned char *p, size_t plen, 1724 int use_context) 1725 { 1726 return (tls1_export_keying_material(s, out, olen, 1727 label, llen, p, plen, use_context)); 1728 } 1729 1730 static unsigned long 1731 ssl_session_hash(const SSL_SESSION *a) 1732 { 1733 unsigned long l; 1734 1735 l = (unsigned long) 1736 ((unsigned int) a->session_id[0] )| 1737 ((unsigned int) a->session_id[1]<< 8L)| 1738 ((unsigned long)a->session_id[2]<<16L)| 1739 ((unsigned long)a->session_id[3]<<24L); 1740 return (l); 1741 } 1742 1743 /* 1744 * NB: If this function (or indeed the hash function which uses a sort of 1745 * coarser function than this one) is changed, ensure 1746 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1747 * able to construct an SSL_SESSION that will collide with any existing session 1748 * with a matching session ID. 1749 */ 1750 static int 1751 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1752 { 1753 if (a->ssl_version != b->ssl_version) 1754 return (1); 1755 if (a->session_id_length != b->session_id_length) 1756 return (1); 1757 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1758 return (1); 1759 return (0); 1760 } 1761 1762 /* 1763 * These wrapper functions should remain rather than redeclaring 1764 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1765 * variable. The reason is that the functions aren't static, they're exposed via 1766 * ssl.h. 1767 */ 1768 static unsigned long 1769 ssl_session_LHASH_HASH(const void *arg) 1770 { 1771 const SSL_SESSION *a = arg; 1772 1773 return ssl_session_hash(a); 1774 } 1775 1776 static int 1777 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1778 { 1779 const SSL_SESSION *a = arg1; 1780 const SSL_SESSION *b = arg2; 1781 1782 return ssl_session_cmp(a, b); 1783 } 1784 1785 SSL_CTX * 1786 SSL_CTX_new(const SSL_METHOD *meth) 1787 { 1788 SSL_CTX *ret; 1789 1790 if (!OPENSSL_init_ssl(0, NULL)) { 1791 SSLerrorx(SSL_R_LIBRARY_BUG); 1792 return (NULL); 1793 } 1794 1795 if (meth == NULL) { 1796 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1797 return (NULL); 1798 } 1799 1800 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1801 SSLerrorx(ERR_R_MALLOC_FAILURE); 1802 return (NULL); 1803 } 1804 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1805 free(ret); 1806 SSLerrorx(ERR_R_MALLOC_FAILURE); 1807 return (NULL); 1808 } 1809 1810 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1811 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1812 goto err; 1813 } 1814 1815 ret->method = meth; 1816 ret->internal->min_version = meth->internal->min_version; 1817 ret->internal->max_version = meth->internal->max_version; 1818 1819 ret->cert_store = NULL; 1820 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1821 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1822 ret->internal->session_cache_head = NULL; 1823 ret->internal->session_cache_tail = NULL; 1824 1825 /* We take the system default */ 1826 ret->session_timeout = meth->internal->get_timeout(); 1827 1828 ret->internal->new_session_cb = 0; 1829 ret->internal->remove_session_cb = 0; 1830 ret->internal->get_session_cb = 0; 1831 ret->internal->generate_session_id = 0; 1832 1833 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1834 1835 ret->references = 1; 1836 ret->internal->quiet_shutdown = 0; 1837 1838 ret->internal->info_callback = NULL; 1839 1840 ret->internal->app_verify_callback = 0; 1841 ret->internal->app_verify_arg = NULL; 1842 1843 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1844 ret->internal->read_ahead = 0; 1845 ret->internal->msg_callback = 0; 1846 ret->internal->msg_callback_arg = NULL; 1847 ret->verify_mode = SSL_VERIFY_NONE; 1848 ret->sid_ctx_length = 0; 1849 ret->internal->default_verify_callback = NULL; 1850 1851 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1852 goto err; 1853 1854 ret->default_passwd_callback = 0; 1855 ret->default_passwd_callback_userdata = NULL; 1856 ret->internal->client_cert_cb = 0; 1857 ret->internal->app_gen_cookie_cb = 0; 1858 ret->internal->app_verify_cookie_cb = 0; 1859 1860 ret->internal->sessions = lh_SSL_SESSION_new(); 1861 if (ret->internal->sessions == NULL) 1862 goto err; 1863 ret->cert_store = X509_STORE_new(); 1864 if (ret->cert_store == NULL) 1865 goto err; 1866 1867 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1868 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1869 if (ret->cipher_list == NULL || 1870 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1871 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1872 goto err2; 1873 } 1874 1875 ret->param = X509_VERIFY_PARAM_new(); 1876 if (!ret->param) 1877 goto err; 1878 1879 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1880 goto err; 1881 1882 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1883 1884 ret->extra_certs = NULL; 1885 1886 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1887 1888 ret->internal->tlsext_servername_callback = 0; 1889 ret->internal->tlsext_servername_arg = NULL; 1890 1891 /* Setup RFC4507 ticket keys */ 1892 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1893 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1894 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1895 1896 ret->internal->tlsext_status_cb = 0; 1897 ret->internal->tlsext_status_arg = NULL; 1898 1899 #ifndef OPENSSL_NO_ENGINE 1900 ret->internal->client_cert_engine = NULL; 1901 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1902 #define eng_strx(x) #x 1903 #define eng_str(x) eng_strx(x) 1904 /* Use specific client engine automatically... ignore errors */ 1905 { 1906 ENGINE *eng; 1907 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1908 if (!eng) { 1909 ERR_clear_error(); 1910 ENGINE_load_builtin_engines(); 1911 eng = ENGINE_by_id(eng_str( 1912 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1913 } 1914 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1915 ERR_clear_error(); 1916 } 1917 #endif 1918 #endif 1919 /* 1920 * Default is to connect to non-RI servers. When RI is more widely 1921 * deployed might change this. 1922 */ 1923 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1924 1925 return (ret); 1926 err: 1927 SSLerrorx(ERR_R_MALLOC_FAILURE); 1928 err2: 1929 SSL_CTX_free(ret); 1930 return (NULL); 1931 } 1932 1933 void 1934 SSL_CTX_free(SSL_CTX *ctx) 1935 { 1936 int i; 1937 1938 if (ctx == NULL) 1939 return; 1940 1941 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1942 if (i > 0) 1943 return; 1944 1945 X509_VERIFY_PARAM_free(ctx->param); 1946 1947 /* 1948 * Free internal session cache. However: the remove_cb() may reference 1949 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1950 * after the sessions were flushed. 1951 * As the ex_data handling routines might also touch the session cache, 1952 * the most secure solution seems to be: empty (flush) the cache, then 1953 * free ex_data, then finally free the cache. 1954 * (See ticket [openssl.org #212].) 1955 */ 1956 if (ctx->internal->sessions != NULL) 1957 SSL_CTX_flush_sessions(ctx, 0); 1958 1959 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1960 1961 lh_SSL_SESSION_free(ctx->internal->sessions); 1962 1963 X509_STORE_free(ctx->cert_store); 1964 sk_SSL_CIPHER_free(ctx->cipher_list); 1965 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1966 ssl_cert_free(ctx->internal->cert); 1967 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1968 sk_X509_pop_free(ctx->extra_certs, X509_free); 1969 1970 #ifndef OPENSSL_NO_SRTP 1971 if (ctx->internal->srtp_profiles) 1972 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1973 #endif 1974 1975 #ifndef OPENSSL_NO_ENGINE 1976 ENGINE_finish(ctx->internal->client_cert_engine); 1977 #endif 1978 1979 free(ctx->internal->tlsext_ecpointformatlist); 1980 free(ctx->internal->tlsext_supportedgroups); 1981 1982 free(ctx->internal->alpn_client_proto_list); 1983 1984 free(ctx->internal); 1985 free(ctx); 1986 } 1987 1988 int 1989 SSL_CTX_up_ref(SSL_CTX *ctx) 1990 { 1991 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1992 return ((refs > 1) ? 1 : 0); 1993 } 1994 1995 pem_password_cb * 1996 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1997 { 1998 return (ctx->default_passwd_callback); 1999 } 2000 2001 void 2002 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2003 { 2004 ctx->default_passwd_callback = cb; 2005 } 2006 2007 void * 2008 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2009 { 2010 return ctx->default_passwd_callback_userdata; 2011 } 2012 2013 void 2014 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2015 { 2016 ctx->default_passwd_callback_userdata = u; 2017 } 2018 2019 void 2020 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2021 void *), void *arg) 2022 { 2023 ctx->internal->app_verify_callback = cb; 2024 ctx->internal->app_verify_arg = arg; 2025 } 2026 2027 void 2028 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2029 { 2030 ctx->verify_mode = mode; 2031 ctx->internal->default_verify_callback = cb; 2032 } 2033 2034 void 2035 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2036 { 2037 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2038 } 2039 2040 void 2041 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2042 { 2043 int rsa_enc, rsa_sign, dh_tmp; 2044 int have_ecc_cert; 2045 unsigned long mask_k, mask_a; 2046 X509 *x = NULL; 2047 CERT_PKEY *cpk; 2048 2049 if (c == NULL) 2050 return; 2051 2052 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2053 c->dh_tmp_auto != 0); 2054 2055 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2056 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2057 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2058 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2059 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2060 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2061 2062 mask_k = 0; 2063 mask_a = 0; 2064 2065 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2066 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2067 mask_k |= SSL_kGOST; 2068 mask_a |= SSL_aGOST01; 2069 } 2070 2071 if (rsa_enc) 2072 mask_k |= SSL_kRSA; 2073 2074 if (dh_tmp) 2075 mask_k |= SSL_kDHE; 2076 2077 if (rsa_enc || rsa_sign) 2078 mask_a |= SSL_aRSA; 2079 2080 mask_a |= SSL_aNULL; 2081 2082 /* 2083 * An ECC certificate may be usable for ECDH and/or 2084 * ECDSA cipher suites depending on the key usage extension. 2085 */ 2086 if (have_ecc_cert) { 2087 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2088 2089 /* This call populates extension flags (ex_flags). */ 2090 X509_check_purpose(x, -1, 0); 2091 2092 /* Key usage, if present, must allow signing. */ 2093 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2094 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2095 mask_a |= SSL_aECDSA; 2096 } 2097 2098 mask_k |= SSL_kECDHE; 2099 2100 c->mask_k = mask_k; 2101 c->mask_a = mask_a; 2102 c->valid = 1; 2103 } 2104 2105 /* See if this handshake is using an ECC cipher suite. */ 2106 int 2107 ssl_using_ecc_cipher(SSL *s) 2108 { 2109 unsigned long alg_a, alg_k; 2110 2111 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2112 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2113 2114 return SSI(s)->tlsext_ecpointformatlist != NULL && 2115 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2116 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2117 } 2118 2119 int 2120 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2121 { 2122 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2123 unsigned long alg_a; 2124 2125 alg_a = cs->algorithm_auth; 2126 2127 if (alg_a & SSL_aECDSA) { 2128 /* This call populates extension flags (ex_flags). */ 2129 X509_check_purpose(x, -1, 0); 2130 2131 /* Key usage, if present, must allow signing. */ 2132 if ((x->ex_flags & EXFLAG_KUSAGE) && 2133 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2134 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2135 return (0); 2136 } 2137 } 2138 2139 return (1); 2140 } 2141 2142 CERT_PKEY * 2143 ssl_get_server_send_pkey(const SSL *s) 2144 { 2145 unsigned long alg_a; 2146 CERT *c; 2147 int i; 2148 2149 c = s->cert; 2150 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2151 2152 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2153 2154 if (alg_a & SSL_aECDSA) { 2155 i = SSL_PKEY_ECC; 2156 } else if (alg_a & SSL_aRSA) { 2157 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2158 i = SSL_PKEY_RSA_SIGN; 2159 else 2160 i = SSL_PKEY_RSA_ENC; 2161 } else if (alg_a & SSL_aGOST01) { 2162 i = SSL_PKEY_GOST01; 2163 } else { /* if (alg_a & SSL_aNULL) */ 2164 SSLerror(s, ERR_R_INTERNAL_ERROR); 2165 return (NULL); 2166 } 2167 2168 return (c->pkeys + i); 2169 } 2170 2171 X509 * 2172 ssl_get_server_send_cert(const SSL *s) 2173 { 2174 CERT_PKEY *cpk; 2175 2176 cpk = ssl_get_server_send_pkey(s); 2177 if (!cpk) 2178 return (NULL); 2179 return (cpk->x509); 2180 } 2181 2182 EVP_PKEY * 2183 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2184 const struct ssl_sigalg **sap) 2185 { 2186 const struct ssl_sigalg *sigalg = NULL; 2187 EVP_PKEY *pkey = NULL; 2188 unsigned long alg_a; 2189 CERT *c; 2190 int idx = -1; 2191 2192 alg_a = cipher->algorithm_auth; 2193 c = s->cert; 2194 2195 if (alg_a & SSL_aRSA) { 2196 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2197 idx = SSL_PKEY_RSA_SIGN; 2198 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2199 idx = SSL_PKEY_RSA_ENC; 2200 } else if ((alg_a & SSL_aECDSA) && 2201 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2202 idx = SSL_PKEY_ECC; 2203 if (idx == -1) { 2204 SSLerror(s, ERR_R_INTERNAL_ERROR); 2205 return (NULL); 2206 } 2207 2208 pkey = c->pkeys[idx].privatekey; 2209 sigalg = c->pkeys[idx].sigalg; 2210 if (!SSL_USE_SIGALGS(s)) { 2211 if (pkey->type == EVP_PKEY_RSA) { 2212 sigalg = ssl_sigalg_lookup(SIGALG_RSA_PKCS1_MD5_SHA1); 2213 } else if (pkey->type == EVP_PKEY_EC) { 2214 sigalg = ssl_sigalg_lookup(SIGALG_ECDSA_SHA1); 2215 } else { 2216 SSLerror(s, SSL_R_UNKNOWN_PKEY_TYPE); 2217 return (NULL); 2218 } 2219 } 2220 if (sigalg == NULL) { 2221 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2222 return (NULL); 2223 } 2224 *pmd = sigalg->md(); 2225 *sap = sigalg; 2226 2227 return (pkey); 2228 } 2229 2230 DH * 2231 ssl_get_auto_dh(SSL *s) 2232 { 2233 CERT_PKEY *cpk; 2234 int keylen; 2235 DH *dhp; 2236 2237 if (s->cert->dh_tmp_auto == 2) { 2238 keylen = 1024; 2239 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2240 keylen = 1024; 2241 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2242 keylen = 3072; 2243 } else { 2244 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2245 return (NULL); 2246 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2247 return (NULL); 2248 keylen = EVP_PKEY_bits(cpk->privatekey); 2249 } 2250 2251 if ((dhp = DH_new()) == NULL) 2252 return (NULL); 2253 2254 dhp->g = BN_new(); 2255 if (dhp->g != NULL) 2256 BN_set_word(dhp->g, 2); 2257 2258 if (keylen >= 8192) 2259 dhp->p = get_rfc3526_prime_8192(NULL); 2260 else if (keylen >= 4096) 2261 dhp->p = get_rfc3526_prime_4096(NULL); 2262 else if (keylen >= 3072) 2263 dhp->p = get_rfc3526_prime_3072(NULL); 2264 else if (keylen >= 2048) 2265 dhp->p = get_rfc3526_prime_2048(NULL); 2266 else if (keylen >= 1536) 2267 dhp->p = get_rfc3526_prime_1536(NULL); 2268 else 2269 dhp->p = get_rfc2409_prime_1024(NULL); 2270 2271 if (dhp->p == NULL || dhp->g == NULL) { 2272 DH_free(dhp); 2273 return (NULL); 2274 } 2275 return (dhp); 2276 } 2277 2278 void 2279 ssl_update_cache(SSL *s, int mode) 2280 { 2281 int i; 2282 2283 /* 2284 * If the session_id_length is 0, we are not supposed to cache it, 2285 * and it would be rather hard to do anyway :-) 2286 */ 2287 if (s->session->session_id_length == 0) 2288 return; 2289 2290 i = s->session_ctx->internal->session_cache_mode; 2291 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2292 || SSL_CTX_add_session(s->session_ctx, s->session)) 2293 && (s->session_ctx->internal->new_session_cb != NULL)) { 2294 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2295 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2296 SSL_SESSION_free(s->session); 2297 } 2298 2299 /* auto flush every 255 connections */ 2300 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2301 ((i & mode) == mode)) { 2302 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2303 s->session_ctx->internal->stats.sess_connect_good : 2304 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2305 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2306 } 2307 } 2308 } 2309 2310 const SSL_METHOD * 2311 SSL_get_ssl_method(SSL *s) 2312 { 2313 return (s->method); 2314 } 2315 2316 int 2317 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2318 { 2319 int conn = -1; 2320 int ret = 1; 2321 2322 if (s->method != meth) { 2323 if (s->internal->handshake_func != NULL) 2324 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2325 2326 if (s->method->internal->version == meth->internal->version) 2327 s->method = meth; 2328 else { 2329 s->method->internal->ssl_free(s); 2330 s->method = meth; 2331 ret = s->method->internal->ssl_new(s); 2332 } 2333 2334 if (conn == 1) 2335 s->internal->handshake_func = meth->internal->ssl_connect; 2336 else if (conn == 0) 2337 s->internal->handshake_func = meth->internal->ssl_accept; 2338 } 2339 return (ret); 2340 } 2341 2342 int 2343 SSL_get_error(const SSL *s, int i) 2344 { 2345 int reason; 2346 unsigned long l; 2347 BIO *bio; 2348 2349 if (i > 0) 2350 return (SSL_ERROR_NONE); 2351 2352 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2353 * etc, where we do encode the error */ 2354 if ((l = ERR_peek_error()) != 0) { 2355 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2356 return (SSL_ERROR_SYSCALL); 2357 else 2358 return (SSL_ERROR_SSL); 2359 } 2360 2361 if ((i < 0) && SSL_want_read(s)) { 2362 bio = SSL_get_rbio(s); 2363 if (BIO_should_read(bio)) { 2364 return (SSL_ERROR_WANT_READ); 2365 } else if (BIO_should_write(bio)) { 2366 /* 2367 * This one doesn't make too much sense... We never 2368 * try to write to the rbio, and an application 2369 * program where rbio and wbio are separate couldn't 2370 * even know what it should wait for. However if we 2371 * ever set s->internal->rwstate incorrectly (so that we have 2372 * SSL_want_read(s) instead of SSL_want_write(s)) 2373 * and rbio and wbio *are* the same, this test works 2374 * around that bug; so it might be safer to keep it. 2375 */ 2376 return (SSL_ERROR_WANT_WRITE); 2377 } else if (BIO_should_io_special(bio)) { 2378 reason = BIO_get_retry_reason(bio); 2379 if (reason == BIO_RR_CONNECT) 2380 return (SSL_ERROR_WANT_CONNECT); 2381 else if (reason == BIO_RR_ACCEPT) 2382 return (SSL_ERROR_WANT_ACCEPT); 2383 else 2384 return (SSL_ERROR_SYSCALL); /* unknown */ 2385 } 2386 } 2387 2388 if ((i < 0) && SSL_want_write(s)) { 2389 bio = SSL_get_wbio(s); 2390 if (BIO_should_write(bio)) { 2391 return (SSL_ERROR_WANT_WRITE); 2392 } else if (BIO_should_read(bio)) { 2393 /* 2394 * See above (SSL_want_read(s) with 2395 * BIO_should_write(bio)) 2396 */ 2397 return (SSL_ERROR_WANT_READ); 2398 } else if (BIO_should_io_special(bio)) { 2399 reason = BIO_get_retry_reason(bio); 2400 if (reason == BIO_RR_CONNECT) 2401 return (SSL_ERROR_WANT_CONNECT); 2402 else if (reason == BIO_RR_ACCEPT) 2403 return (SSL_ERROR_WANT_ACCEPT); 2404 else 2405 return (SSL_ERROR_SYSCALL); 2406 } 2407 } 2408 if ((i < 0) && SSL_want_x509_lookup(s)) { 2409 return (SSL_ERROR_WANT_X509_LOOKUP); 2410 } 2411 2412 if (i == 0) { 2413 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2414 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2415 return (SSL_ERROR_ZERO_RETURN); 2416 } 2417 return (SSL_ERROR_SYSCALL); 2418 } 2419 2420 int 2421 SSL_do_handshake(SSL *s) 2422 { 2423 int ret = 1; 2424 2425 if (s->internal->handshake_func == NULL) { 2426 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2427 return (-1); 2428 } 2429 2430 s->method->internal->ssl_renegotiate_check(s); 2431 2432 if (SSL_in_init(s) || SSL_in_before(s)) { 2433 ret = s->internal->handshake_func(s); 2434 } 2435 return (ret); 2436 } 2437 2438 /* 2439 * For the next 2 functions, SSL_clear() sets shutdown and so 2440 * one of these calls will reset it 2441 */ 2442 void 2443 SSL_set_accept_state(SSL *s) 2444 { 2445 s->server = 1; 2446 s->internal->shutdown = 0; 2447 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2448 s->internal->handshake_func = s->method->internal->ssl_accept; 2449 ssl_clear_cipher_state(s); 2450 } 2451 2452 void 2453 SSL_set_connect_state(SSL *s) 2454 { 2455 s->server = 0; 2456 s->internal->shutdown = 0; 2457 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2458 s->internal->handshake_func = s->method->internal->ssl_connect; 2459 ssl_clear_cipher_state(s); 2460 } 2461 2462 int 2463 ssl_undefined_function(SSL *s) 2464 { 2465 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2466 return (0); 2467 } 2468 2469 int 2470 ssl_undefined_void_function(void) 2471 { 2472 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2473 return (0); 2474 } 2475 2476 int 2477 ssl_undefined_const_function(const SSL *s) 2478 { 2479 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2480 return (0); 2481 } 2482 2483 const char * 2484 ssl_version_string(int ver) 2485 { 2486 switch (ver) { 2487 case DTLS1_VERSION: 2488 return (SSL_TXT_DTLS1); 2489 case TLS1_VERSION: 2490 return (SSL_TXT_TLSV1); 2491 case TLS1_1_VERSION: 2492 return (SSL_TXT_TLSV1_1); 2493 case TLS1_2_VERSION: 2494 return (SSL_TXT_TLSV1_2); 2495 default: 2496 return ("unknown"); 2497 } 2498 } 2499 2500 const char * 2501 SSL_get_version(const SSL *s) 2502 { 2503 return ssl_version_string(s->version); 2504 } 2505 2506 SSL * 2507 SSL_dup(SSL *s) 2508 { 2509 STACK_OF(X509_NAME) *sk; 2510 X509_NAME *xn; 2511 SSL *ret; 2512 int i; 2513 2514 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2515 goto err; 2516 2517 ret->version = s->version; 2518 ret->internal->type = s->internal->type; 2519 ret->method = s->method; 2520 2521 if (s->session != NULL) { 2522 if (!SSL_copy_session_id(ret, s)) 2523 goto err; 2524 } else { 2525 /* 2526 * No session has been established yet, so we have to expect 2527 * that s->cert or ret->cert will be changed later -- 2528 * they should not both point to the same object, 2529 * and thus we can't use SSL_copy_session_id. 2530 */ 2531 2532 ret->method->internal->ssl_free(ret); 2533 ret->method = s->method; 2534 ret->method->internal->ssl_new(ret); 2535 2536 ssl_cert_free(ret->cert); 2537 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2538 goto err; 2539 2540 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2541 s->sid_ctx_length)) 2542 goto err; 2543 } 2544 2545 ret->internal->options = s->internal->options; 2546 ret->internal->mode = s->internal->mode; 2547 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2548 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2549 ret->internal->msg_callback = s->internal->msg_callback; 2550 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2551 SSL_set_verify(ret, SSL_get_verify_mode(s), 2552 SSL_get_verify_callback(s)); 2553 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2554 ret->internal->generate_session_id = s->internal->generate_session_id; 2555 2556 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2557 2558 ret->internal->debug = s->internal->debug; 2559 2560 /* copy app data, a little dangerous perhaps */ 2561 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2562 &ret->internal->ex_data, &s->internal->ex_data)) 2563 goto err; 2564 2565 /* setup rbio, and wbio */ 2566 if (s->rbio != NULL) { 2567 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2568 goto err; 2569 } 2570 if (s->wbio != NULL) { 2571 if (s->wbio != s->rbio) { 2572 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2573 goto err; 2574 } else 2575 ret->wbio = ret->rbio; 2576 } 2577 ret->internal->rwstate = s->internal->rwstate; 2578 ret->internal->in_handshake = s->internal->in_handshake; 2579 ret->internal->handshake_func = s->internal->handshake_func; 2580 ret->server = s->server; 2581 ret->internal->renegotiate = s->internal->renegotiate; 2582 ret->internal->new_session = s->internal->new_session; 2583 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2584 ret->internal->shutdown = s->internal->shutdown; 2585 /* SSL_dup does not really work at any state, though */ 2586 S3I(ret)->hs.state = S3I(s)->hs.state; 2587 ret->internal->rstate = s->internal->rstate; 2588 2589 /* 2590 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2591 * ret->init_off 2592 */ 2593 ret->internal->init_num = 0; 2594 2595 ret->internal->hit = s->internal->hit; 2596 2597 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2598 2599 /* dup the cipher_list and cipher_list_by_id stacks */ 2600 if (s->cipher_list != NULL) { 2601 if ((ret->cipher_list = 2602 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2603 goto err; 2604 } 2605 if (s->internal->cipher_list_by_id != NULL) { 2606 if ((ret->internal->cipher_list_by_id = 2607 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2608 goto err; 2609 } 2610 2611 /* Dup the client_CA list */ 2612 if (s->internal->client_CA != NULL) { 2613 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2614 ret->internal->client_CA = sk; 2615 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2616 xn = sk_X509_NAME_value(sk, i); 2617 if (sk_X509_NAME_set(sk, i, 2618 X509_NAME_dup(xn)) == NULL) { 2619 X509_NAME_free(xn); 2620 goto err; 2621 } 2622 } 2623 } 2624 2625 return ret; 2626 err: 2627 SSL_free(ret); 2628 return NULL; 2629 } 2630 2631 void 2632 ssl_clear_cipher_state(SSL *s) 2633 { 2634 ssl_clear_cipher_read_state(s); 2635 ssl_clear_cipher_write_state(s); 2636 } 2637 2638 void 2639 ssl_clear_cipher_read_state(SSL *s) 2640 { 2641 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2642 s->enc_read_ctx = NULL; 2643 EVP_MD_CTX_free(s->read_hash); 2644 s->read_hash = NULL; 2645 2646 if (s->internal->aead_read_ctx != NULL) { 2647 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2648 free(s->internal->aead_read_ctx); 2649 s->internal->aead_read_ctx = NULL; 2650 } 2651 } 2652 2653 void 2654 ssl_clear_cipher_write_state(SSL *s) 2655 { 2656 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2657 s->internal->enc_write_ctx = NULL; 2658 EVP_MD_CTX_free(s->internal->write_hash); 2659 s->internal->write_hash = NULL; 2660 2661 if (s->internal->aead_write_ctx != NULL) { 2662 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2663 free(s->internal->aead_write_ctx); 2664 s->internal->aead_write_ctx = NULL; 2665 } 2666 } 2667 2668 /* Fix this function so that it takes an optional type parameter */ 2669 X509 * 2670 SSL_get_certificate(const SSL *s) 2671 { 2672 return (s->cert->key->x509); 2673 } 2674 2675 /* Fix this function so that it takes an optional type parameter */ 2676 EVP_PKEY * 2677 SSL_get_privatekey(const SSL *s) 2678 { 2679 return (s->cert->key->privatekey); 2680 } 2681 2682 const SSL_CIPHER * 2683 SSL_get_current_cipher(const SSL *s) 2684 { 2685 if ((s->session != NULL) && (s->session->cipher != NULL)) 2686 return (s->session->cipher); 2687 return (NULL); 2688 } 2689 const void * 2690 SSL_get_current_compression(SSL *s) 2691 { 2692 return (NULL); 2693 } 2694 2695 const void * 2696 SSL_get_current_expansion(SSL *s) 2697 { 2698 return (NULL); 2699 } 2700 2701 size_t 2702 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2703 { 2704 size_t len = sizeof(s->s3->client_random); 2705 2706 if (out == NULL) 2707 return len; 2708 2709 if (len > max_out) 2710 len = max_out; 2711 2712 memcpy(out, s->s3->client_random, len); 2713 2714 return len; 2715 } 2716 2717 size_t 2718 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2719 { 2720 size_t len = sizeof(s->s3->server_random); 2721 2722 if (out == NULL) 2723 return len; 2724 2725 if (len > max_out) 2726 len = max_out; 2727 2728 memcpy(out, s->s3->server_random, len); 2729 2730 return len; 2731 } 2732 2733 int 2734 ssl_init_wbio_buffer(SSL *s, int push) 2735 { 2736 BIO *bbio; 2737 2738 if (s->bbio == NULL) { 2739 bbio = BIO_new(BIO_f_buffer()); 2740 if (bbio == NULL) 2741 return (0); 2742 s->bbio = bbio; 2743 } else { 2744 bbio = s->bbio; 2745 if (s->bbio == s->wbio) 2746 s->wbio = BIO_pop(s->wbio); 2747 } 2748 (void)BIO_reset(bbio); 2749 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2750 if (!BIO_set_read_buffer_size(bbio, 1)) { 2751 SSLerror(s, ERR_R_BUF_LIB); 2752 return (0); 2753 } 2754 if (push) { 2755 if (s->wbio != bbio) 2756 s->wbio = BIO_push(bbio, s->wbio); 2757 } else { 2758 if (s->wbio == bbio) 2759 s->wbio = BIO_pop(bbio); 2760 } 2761 return (1); 2762 } 2763 2764 void 2765 ssl_free_wbio_buffer(SSL *s) 2766 { 2767 if (s == NULL) 2768 return; 2769 2770 if (s->bbio == NULL) 2771 return; 2772 2773 if (s->bbio == s->wbio) { 2774 /* remove buffering */ 2775 s->wbio = BIO_pop(s->wbio); 2776 } 2777 BIO_free(s->bbio); 2778 s->bbio = NULL; 2779 } 2780 2781 void 2782 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2783 { 2784 ctx->internal->quiet_shutdown = mode; 2785 } 2786 2787 int 2788 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2789 { 2790 return (ctx->internal->quiet_shutdown); 2791 } 2792 2793 void 2794 SSL_set_quiet_shutdown(SSL *s, int mode) 2795 { 2796 s->internal->quiet_shutdown = mode; 2797 } 2798 2799 int 2800 SSL_get_quiet_shutdown(const SSL *s) 2801 { 2802 return (s->internal->quiet_shutdown); 2803 } 2804 2805 void 2806 SSL_set_shutdown(SSL *s, int mode) 2807 { 2808 s->internal->shutdown = mode; 2809 } 2810 2811 int 2812 SSL_get_shutdown(const SSL *s) 2813 { 2814 return (s->internal->shutdown); 2815 } 2816 2817 int 2818 SSL_version(const SSL *s) 2819 { 2820 return (s->version); 2821 } 2822 2823 SSL_CTX * 2824 SSL_get_SSL_CTX(const SSL *ssl) 2825 { 2826 return (ssl->ctx); 2827 } 2828 2829 SSL_CTX * 2830 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2831 { 2832 CERT *ocert = ssl->cert; 2833 2834 if (ssl->ctx == ctx) 2835 return (ssl->ctx); 2836 if (ctx == NULL) 2837 ctx = ssl->initial_ctx; 2838 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2839 if (ocert != NULL) { 2840 int i; 2841 /* Copy negotiated sigalg from original certificate. */ 2842 for (i = 0; i < SSL_PKEY_NUM; i++) 2843 ssl->cert->pkeys[i].sigalg = ocert->pkeys[i].sigalg; 2844 ssl_cert_free(ocert); 2845 } 2846 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2847 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2848 ssl->ctx = ctx; 2849 return (ssl->ctx); 2850 } 2851 2852 int 2853 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2854 { 2855 return (X509_STORE_set_default_paths(ctx->cert_store)); 2856 } 2857 2858 int 2859 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2860 const char *CApath) 2861 { 2862 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2863 } 2864 2865 int 2866 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2867 { 2868 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2869 } 2870 2871 void 2872 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2873 { 2874 ssl->internal->info_callback = cb; 2875 } 2876 2877 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2878 { 2879 return (ssl->internal->info_callback); 2880 } 2881 2882 int 2883 SSL_state(const SSL *ssl) 2884 { 2885 return (S3I(ssl)->hs.state); 2886 } 2887 2888 void 2889 SSL_set_state(SSL *ssl, int state) 2890 { 2891 S3I(ssl)->hs.state = state; 2892 } 2893 2894 void 2895 SSL_set_verify_result(SSL *ssl, long arg) 2896 { 2897 ssl->verify_result = arg; 2898 } 2899 2900 long 2901 SSL_get_verify_result(const SSL *ssl) 2902 { 2903 return (ssl->verify_result); 2904 } 2905 2906 int 2907 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2908 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2909 { 2910 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2911 new_func, dup_func, free_func)); 2912 } 2913 2914 int 2915 SSL_set_ex_data(SSL *s, int idx, void *arg) 2916 { 2917 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2918 } 2919 2920 void * 2921 SSL_get_ex_data(const SSL *s, int idx) 2922 { 2923 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2924 } 2925 2926 int 2927 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2928 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2929 { 2930 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2931 new_func, dup_func, free_func)); 2932 } 2933 2934 int 2935 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2936 { 2937 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2938 } 2939 2940 void * 2941 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2942 { 2943 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2944 } 2945 2946 int 2947 ssl_ok(SSL *s) 2948 { 2949 return (1); 2950 } 2951 2952 X509_STORE * 2953 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2954 { 2955 return (ctx->cert_store); 2956 } 2957 2958 void 2959 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2960 { 2961 X509_STORE_free(ctx->cert_store); 2962 ctx->cert_store = store; 2963 } 2964 2965 X509 * 2966 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2967 { 2968 if (ctx->internal->cert == NULL) 2969 return NULL; 2970 2971 return ctx->internal->cert->key->x509; 2972 } 2973 2974 int 2975 SSL_want(const SSL *s) 2976 { 2977 return (s->internal->rwstate); 2978 } 2979 2980 void 2981 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2982 int keylength)) 2983 { 2984 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2985 } 2986 2987 void 2988 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2989 int keylength)) 2990 { 2991 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2992 } 2993 2994 void 2995 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2996 int keylength)) 2997 { 2998 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2999 } 3000 3001 void 3002 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3003 int keylength)) 3004 { 3005 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3006 } 3007 3008 void 3009 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3010 int is_export, int keylength)) 3011 { 3012 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3013 (void (*)(void))ecdh); 3014 } 3015 3016 void 3017 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3018 int keylength)) 3019 { 3020 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3021 } 3022 3023 3024 void 3025 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3026 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3027 { 3028 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3029 (void (*)(void))cb); 3030 } 3031 3032 void 3033 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3034 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3035 { 3036 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3037 } 3038 3039 void 3040 SSL_set_debug(SSL *s, int debug) 3041 { 3042 s->internal->debug = debug; 3043 } 3044 3045 int 3046 SSL_cache_hit(SSL *s) 3047 { 3048 return (s->internal->hit); 3049 } 3050 3051 int 3052 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3053 { 3054 return ctx->internal->min_version; 3055 } 3056 3057 int 3058 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3059 { 3060 return ssl_version_set_min(ctx->method, version, 3061 ctx->internal->max_version, &ctx->internal->min_version); 3062 } 3063 3064 int 3065 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3066 { 3067 return ctx->internal->max_version; 3068 } 3069 3070 int 3071 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3072 { 3073 return ssl_version_set_max(ctx->method, version, 3074 ctx->internal->min_version, &ctx->internal->max_version); 3075 } 3076 3077 int 3078 SSL_get_min_proto_version(SSL *ssl) 3079 { 3080 return ssl->internal->min_version; 3081 } 3082 3083 int 3084 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3085 { 3086 return ssl_version_set_min(ssl->method, version, 3087 ssl->internal->max_version, &ssl->internal->min_version); 3088 } 3089 int 3090 SSL_get_max_proto_version(SSL *ssl) 3091 { 3092 return ssl->internal->max_version; 3093 } 3094 3095 int 3096 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3097 { 3098 return ssl_version_set_max(ssl->method, version, 3099 ssl->internal->min_version, &ssl->internal->max_version); 3100 } 3101 3102 static int 3103 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3104 { 3105 SSL_CIPHER const *a = a_; 3106 SSL_CIPHER const *b = b_; 3107 return ssl_cipher_id_cmp(a, b); 3108 } 3109 3110 SSL_CIPHER * 3111 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3112 { 3113 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3114 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3115 } 3116