1 /* $OpenBSD: ssl_lib.c,v 1.182 2018/03/17 16:20:01 beck 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" 159 160 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162 int 163 SSL_clear(SSL *s) 164 { 165 if (s->method == NULL) { 166 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 167 return (0); 168 } 169 170 if (ssl_clear_bad_session(s)) { 171 SSL_SESSION_free(s->session); 172 s->session = NULL; 173 } 174 175 s->error = 0; 176 s->internal->hit = 0; 177 s->internal->shutdown = 0; 178 179 if (s->internal->renegotiate) { 180 SSLerror(s, ERR_R_INTERNAL_ERROR); 181 return (0); 182 } 183 184 s->internal->type = 0; 185 186 s->version = s->method->internal->version; 187 s->client_version = s->version; 188 s->internal->rwstate = SSL_NOTHING; 189 s->internal->rstate = SSL_ST_READ_HEADER; 190 191 BUF_MEM_free(s->internal->init_buf); 192 s->internal->init_buf = NULL; 193 194 ssl_clear_cipher_ctx(s); 195 ssl_clear_hash_ctx(&s->read_hash); 196 ssl_clear_hash_ctx(&s->internal->write_hash); 197 198 s->internal->first_packet = 0; 199 200 /* 201 * Check to see if we were changed into a different method, if 202 * so, revert back if we are not doing session-id reuse. 203 */ 204 if (!s->internal->in_handshake && (s->session == NULL) && 205 (s->method != s->ctx->method)) { 206 s->method->internal->ssl_free(s); 207 s->method = s->ctx->method; 208 if (!s->method->internal->ssl_new(s)) 209 return (0); 210 } else 211 s->method->internal->ssl_clear(s); 212 213 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 return (1); 216 } 217 218 /* Used to change an SSL_CTXs default SSL method type */ 219 int 220 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 221 { 222 STACK_OF(SSL_CIPHER) *sk; 223 224 ctx->method = meth; 225 226 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 227 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 228 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 229 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 230 return (0); 231 } 232 return (1); 233 } 234 235 SSL * 236 SSL_new(SSL_CTX *ctx) 237 { 238 SSL *s; 239 240 if (ctx == NULL) { 241 SSLerrorx(SSL_R_NULL_SSL_CTX); 242 return (NULL); 243 } 244 if (ctx->method == NULL) { 245 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 246 return (NULL); 247 } 248 249 if ((s = calloc(1, sizeof(*s))) == NULL) { 250 SSLerrorx(ERR_R_MALLOC_FAILURE); 251 return (NULL); 252 } 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 254 free(s); 255 SSLerrorx(ERR_R_MALLOC_FAILURE); 256 return (NULL); 257 } 258 259 s->internal->min_version = ctx->internal->min_version; 260 s->internal->max_version = ctx->internal->max_version; 261 262 s->internal->options = ctx->internal->options; 263 s->internal->mode = ctx->internal->mode; 264 s->internal->max_cert_list = ctx->internal->max_cert_list; 265 266 if (ctx->internal->cert != NULL) { 267 /* 268 * Earlier library versions used to copy the pointer to 269 * the CERT, not its contents; only when setting new 270 * parameters for the per-SSL copy, ssl_cert_new would be 271 * called (and the direct reference to the per-SSL_CTX 272 * settings would be lost, but those still were indirectly 273 * accessed for various purposes, and for that reason they 274 * used to be known as s->ctx->default_cert). 275 * Now we don't look at the SSL_CTX's CERT after having 276 * duplicated it once. 277 */ 278 s->cert = ssl_cert_dup(ctx->internal->cert); 279 if (s->cert == NULL) 280 goto err; 281 } else 282 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 283 284 s->internal->read_ahead = ctx->internal->read_ahead; 285 s->internal->msg_callback = ctx->internal->msg_callback; 286 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 287 s->verify_mode = ctx->verify_mode; 288 s->sid_ctx_length = ctx->sid_ctx_length; 289 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 290 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 291 s->internal->verify_callback = ctx->internal->default_verify_callback; 292 s->internal->generate_session_id = ctx->internal->generate_session_id; 293 294 s->param = X509_VERIFY_PARAM_new(); 295 if (!s->param) 296 goto err; 297 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 298 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 299 s->max_send_fragment = ctx->internal->max_send_fragment; 300 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->ctx = ctx; 303 s->internal->tlsext_debug_cb = 0; 304 s->internal->tlsext_debug_arg = NULL; 305 s->internal->tlsext_ticket_expected = 0; 306 s->tlsext_status_type = -1; 307 s->internal->tlsext_status_expected = 0; 308 s->internal->tlsext_ocsp_ids = NULL; 309 s->internal->tlsext_ocsp_exts = NULL; 310 s->internal->tlsext_ocsp_resp = NULL; 311 s->internal->tlsext_ocsp_resplen = -1; 312 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 313 s->initial_ctx = ctx; 314 315 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 316 s->internal->tlsext_ecpointformatlist = 317 calloc(ctx->internal->tlsext_ecpointformatlist_length, 318 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 319 if (s->internal->tlsext_ecpointformatlist == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_ecpointformatlist, 322 ctx->internal->tlsext_ecpointformatlist, 323 ctx->internal->tlsext_ecpointformatlist_length * 324 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 325 s->internal->tlsext_ecpointformatlist_length = 326 ctx->internal->tlsext_ecpointformatlist_length; 327 } 328 if (ctx->internal->tlsext_supportedgroups != NULL) { 329 s->internal->tlsext_supportedgroups = 330 calloc(ctx->internal->tlsext_supportedgroups_length, 331 sizeof(ctx->internal->tlsext_supportedgroups)); 332 if (s->internal->tlsext_supportedgroups == NULL) 333 goto err; 334 memcpy(s->internal->tlsext_supportedgroups, 335 ctx->internal->tlsext_supportedgroups, 336 ctx->internal->tlsext_supportedgroups_length * 337 sizeof(ctx->internal->tlsext_supportedgroups[0])); 338 s->internal->tlsext_supportedgroups_length = 339 ctx->internal->tlsext_supportedgroups_length; 340 } 341 342 if (s->ctx->internal->alpn_client_proto_list != NULL) { 343 s->internal->alpn_client_proto_list = 344 malloc(s->ctx->internal->alpn_client_proto_list_len); 345 if (s->internal->alpn_client_proto_list == NULL) 346 goto err; 347 memcpy(s->internal->alpn_client_proto_list, 348 s->ctx->internal->alpn_client_proto_list, 349 s->ctx->internal->alpn_client_proto_list_len); 350 s->internal->alpn_client_proto_list_len = 351 s->ctx->internal->alpn_client_proto_list_len; 352 } 353 354 s->verify_result = X509_V_OK; 355 356 s->method = ctx->method; 357 358 if (!s->method->internal->ssl_new(s)) 359 goto err; 360 361 s->references = 1; 362 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 363 364 SSL_clear(s); 365 366 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 367 368 return (s); 369 370 err: 371 SSL_free(s); 372 SSLerrorx(ERR_R_MALLOC_FAILURE); 373 return (NULL); 374 } 375 376 int 377 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 378 unsigned int sid_ctx_len) 379 { 380 if (sid_ctx_len > sizeof ctx->sid_ctx) { 381 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 382 return (0); 383 } 384 ctx->sid_ctx_length = sid_ctx_len; 385 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 386 387 return (1); 388 } 389 390 int 391 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 392 unsigned int sid_ctx_len) 393 { 394 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 395 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 396 return (0); 397 } 398 ssl->sid_ctx_length = sid_ctx_len; 399 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 400 401 return (1); 402 } 403 404 int 405 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 406 { 407 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 408 ctx->internal->generate_session_id = cb; 409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 410 return (1); 411 } 412 413 int 414 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 415 { 416 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 417 ssl->internal->generate_session_id = cb; 418 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 419 return (1); 420 } 421 422 int 423 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 424 unsigned int id_len) 425 { 426 /* 427 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 428 * shows how we can "construct" a session to give us the desired 429 * check - ie. to find if there's a session in the hash table 430 * that would conflict with any new session built out of this 431 * id/id_len and the ssl_version in use by this SSL. 432 */ 433 SSL_SESSION r, *p; 434 435 if (id_len > sizeof r.session_id) 436 return (0); 437 438 r.ssl_version = ssl->version; 439 r.session_id_length = id_len; 440 memcpy(r.session_id, id, id_len); 441 442 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 443 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 444 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 445 return (p != NULL); 446 } 447 448 int 449 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 450 { 451 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 452 } 453 454 int 455 SSL_set_purpose(SSL *s, int purpose) 456 { 457 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 458 } 459 460 int 461 SSL_CTX_set_trust(SSL_CTX *s, int trust) 462 { 463 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 464 } 465 466 int 467 SSL_set_trust(SSL *s, int trust) 468 { 469 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 470 } 471 472 X509_VERIFY_PARAM * 473 SSL_CTX_get0_param(SSL_CTX *ctx) 474 { 475 return (ctx->param); 476 } 477 478 int 479 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 480 { 481 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 482 } 483 484 X509_VERIFY_PARAM * 485 SSL_get0_param(SSL *ssl) 486 { 487 return (ssl->param); 488 } 489 490 int 491 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 492 { 493 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 494 } 495 496 void 497 SSL_free(SSL *s) 498 { 499 int i; 500 501 if (s == NULL) 502 return; 503 504 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 505 if (i > 0) 506 return; 507 508 X509_VERIFY_PARAM_free(s->param); 509 510 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 511 512 if (s->bbio != NULL) { 513 /* If the buffering BIO is in place, pop it off */ 514 if (s->bbio == s->wbio) { 515 s->wbio = BIO_pop(s->wbio); 516 } 517 BIO_free(s->bbio); 518 s->bbio = NULL; 519 } 520 521 if (s->rbio != s->wbio) 522 BIO_free_all(s->rbio); 523 BIO_free_all(s->wbio); 524 525 BUF_MEM_free(s->internal->init_buf); 526 527 /* add extra stuff */ 528 sk_SSL_CIPHER_free(s->cipher_list); 529 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 530 531 /* Make the next call work :-) */ 532 if (s->session != NULL) { 533 ssl_clear_bad_session(s); 534 SSL_SESSION_free(s->session); 535 } 536 537 ssl_clear_cipher_ctx(s); 538 ssl_clear_hash_ctx(&s->read_hash); 539 ssl_clear_hash_ctx(&s->internal->write_hash); 540 541 ssl_cert_free(s->cert); 542 543 free(s->tlsext_hostname); 544 SSL_CTX_free(s->initial_ctx); 545 546 free(s->internal->tlsext_ecpointformatlist); 547 free(s->internal->tlsext_supportedgroups); 548 549 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 550 X509_EXTENSION_free); 551 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 552 free(s->internal->tlsext_ocsp_resp); 553 554 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 555 556 if (s->method != NULL) 557 s->method->internal->ssl_free(s); 558 559 SSL_CTX_free(s->ctx); 560 561 free(s->internal->alpn_client_proto_list); 562 563 #ifndef OPENSSL_NO_SRTP 564 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 565 #endif 566 567 free(s->internal); 568 free(s); 569 } 570 571 int 572 SSL_up_ref(SSL *s) 573 { 574 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 575 return (refs > 1) ? 1 : 0; 576 } 577 578 void 579 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 580 { 581 /* If the output buffering BIO is still in place, remove it */ 582 if (s->bbio != NULL) { 583 if (s->wbio == s->bbio) { 584 s->wbio = s->wbio->next_bio; 585 s->bbio->next_bio = NULL; 586 } 587 } 588 589 if (s->rbio != rbio && s->rbio != s->wbio) 590 BIO_free_all(s->rbio); 591 if (s->wbio != wbio) 592 BIO_free_all(s->wbio); 593 s->rbio = rbio; 594 s->wbio = wbio; 595 } 596 597 BIO * 598 SSL_get_rbio(const SSL *s) 599 { 600 return (s->rbio); 601 } 602 603 BIO * 604 SSL_get_wbio(const SSL *s) 605 { 606 return (s->wbio); 607 } 608 609 int 610 SSL_get_fd(const SSL *s) 611 { 612 return (SSL_get_rfd(s)); 613 } 614 615 int 616 SSL_get_rfd(const SSL *s) 617 { 618 int ret = -1; 619 BIO *b, *r; 620 621 b = SSL_get_rbio(s); 622 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 623 if (r != NULL) 624 BIO_get_fd(r, &ret); 625 return (ret); 626 } 627 628 int 629 SSL_get_wfd(const SSL *s) 630 { 631 int ret = -1; 632 BIO *b, *r; 633 634 b = SSL_get_wbio(s); 635 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 636 if (r != NULL) 637 BIO_get_fd(r, &ret); 638 return (ret); 639 } 640 641 int 642 SSL_set_fd(SSL *s, int fd) 643 { 644 int ret = 0; 645 BIO *bio = NULL; 646 647 bio = BIO_new(BIO_s_socket()); 648 649 if (bio == NULL) { 650 SSLerror(s, ERR_R_BUF_LIB); 651 goto err; 652 } 653 BIO_set_fd(bio, fd, BIO_NOCLOSE); 654 SSL_set_bio(s, bio, bio); 655 ret = 1; 656 err: 657 return (ret); 658 } 659 660 int 661 SSL_set_wfd(SSL *s, int fd) 662 { 663 int ret = 0; 664 BIO *bio = NULL; 665 666 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 667 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, SSL_get_rbio(s), bio); 676 } else 677 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 678 ret = 1; 679 err: 680 return (ret); 681 } 682 683 int 684 SSL_set_rfd(SSL *s, int fd) 685 { 686 int ret = 0; 687 BIO *bio = NULL; 688 689 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 690 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 691 bio = BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) { 694 SSLerror(s, ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, bio, SSL_get_wbio(s)); 699 } else 700 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 701 ret = 1; 702 err: 703 return (ret); 704 } 705 706 707 /* return length of latest Finished message we sent, copy to 'buf' */ 708 size_t 709 SSL_get_finished(const SSL *s, void *buf, size_t count) 710 { 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = S3I(s)->tmp.finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, S3I(s)->tmp.finish_md, count); 718 } 719 return (ret); 720 } 721 722 /* return length of latest Finished message we expected, copy to 'buf' */ 723 size_t 724 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 725 { 726 size_t ret = 0; 727 728 if (s->s3 != NULL) { 729 ret = S3I(s)->tmp.peer_finish_md_len; 730 if (count > ret) 731 count = ret; 732 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 733 } 734 return (ret); 735 } 736 737 738 int 739 SSL_get_verify_mode(const SSL *s) 740 { 741 return (s->verify_mode); 742 } 743 744 int 745 SSL_get_verify_depth(const SSL *s) 746 { 747 return (X509_VERIFY_PARAM_get_depth(s->param)); 748 } 749 750 int 751 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 752 { 753 return (s->internal->verify_callback); 754 } 755 756 int 757 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 758 { 759 return (ctx->verify_mode); 760 } 761 762 int 763 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 764 { 765 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 766 } 767 768 int 769 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 770 { 771 return (ctx->internal->default_verify_callback); 772 } 773 774 void 775 SSL_set_verify(SSL *s, int mode, 776 int (*callback)(int ok, X509_STORE_CTX *ctx)) 777 { 778 s->verify_mode = mode; 779 if (callback != NULL) 780 s->internal->verify_callback = callback; 781 } 782 783 void 784 SSL_set_verify_depth(SSL *s, int depth) 785 { 786 X509_VERIFY_PARAM_set_depth(s->param, depth); 787 } 788 789 void 790 SSL_set_read_ahead(SSL *s, int yes) 791 { 792 s->internal->read_ahead = yes; 793 } 794 795 int 796 SSL_get_read_ahead(const SSL *s) 797 { 798 return (s->internal->read_ahead); 799 } 800 801 int 802 SSL_pending(const SSL *s) 803 { 804 /* 805 * SSL_pending cannot work properly if read-ahead is enabled 806 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 807 * and it is impossible to fix since SSL_pending cannot report 808 * errors that may be observed while scanning the new data. 809 * (Note that SSL_pending() is often used as a boolean value, 810 * so we'd better not return -1.) 811 */ 812 return (s->method->internal->ssl_pending(s)); 813 } 814 815 X509 * 816 SSL_get_peer_certificate(const SSL *s) 817 { 818 X509 *r; 819 820 if ((s == NULL) || (s->session == NULL)) 821 r = NULL; 822 else 823 r = s->session->peer; 824 825 if (r == NULL) 826 return (r); 827 828 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 829 830 return (r); 831 } 832 833 STACK_OF(X509) * 834 SSL_get_peer_cert_chain(const SSL *s) 835 { 836 STACK_OF(X509) *r; 837 838 if ((s == NULL) || (s->session == NULL) || 839 (SSI(s)->sess_cert == NULL)) 840 r = NULL; 841 else 842 r = SSI(s)->sess_cert->cert_chain; 843 844 /* 845 * If we are a client, cert_chain includes the peer's own 846 * certificate; 847 * if we are a server, it does not. 848 */ 849 return (r); 850 } 851 852 /* 853 * Now in theory, since the calling process own 't' it should be safe to 854 * modify. We need to be able to read f without being hassled 855 */ 856 void 857 SSL_copy_session_id(SSL *t, const SSL *f) 858 { 859 CERT *tmp; 860 861 /* Do we need to to SSL locking? */ 862 SSL_set_session(t, SSL_get_session(f)); 863 864 /* 865 * What if we are setup as SSLv2 but want to talk SSLv3 or 866 * vice-versa. 867 */ 868 if (t->method != f->method) { 869 t->method->internal->ssl_free(t); /* cleanup current */ 870 t->method = f->method; /* change method */ 871 t->method->internal->ssl_new(t); /* setup new */ 872 } 873 874 tmp = t->cert; 875 if (f->cert != NULL) { 876 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 877 t->cert = f->cert; 878 } else 879 t->cert = NULL; 880 ssl_cert_free(tmp); 881 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 882 } 883 884 /* Fix this so it checks all the valid key/cert options */ 885 int 886 SSL_CTX_check_private_key(const SSL_CTX *ctx) 887 { 888 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 889 (ctx->internal->cert->key->x509 == NULL)) { 890 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 891 return (0); 892 } 893 if (ctx->internal->cert->key->privatekey == NULL) { 894 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 895 return (0); 896 } 897 return (X509_check_private_key(ctx->internal->cert->key->x509, 898 ctx->internal->cert->key->privatekey)); 899 } 900 901 /* Fix this function so that it takes an optional type parameter */ 902 int 903 SSL_check_private_key(const SSL *ssl) 904 { 905 if (ssl == NULL) { 906 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 907 return (0); 908 } 909 if (ssl->cert == NULL) { 910 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->x509 == NULL) { 914 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return (0); 916 } 917 if (ssl->cert->key->privatekey == NULL) { 918 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 919 return (0); 920 } 921 return (X509_check_private_key(ssl->cert->key->x509, 922 ssl->cert->key->privatekey)); 923 } 924 925 int 926 SSL_accept(SSL *s) 927 { 928 if (s->internal->handshake_func == NULL) 929 SSL_set_accept_state(s); /* Not properly initialized yet */ 930 931 return (s->method->internal->ssl_accept(s)); 932 } 933 934 int 935 SSL_connect(SSL *s) 936 { 937 if (s->internal->handshake_func == NULL) 938 SSL_set_connect_state(s); /* Not properly initialized yet */ 939 940 return (s->method->internal->ssl_connect(s)); 941 } 942 943 int 944 SSL_is_server(const SSL *s) 945 { 946 return s->server; 947 } 948 949 long 950 SSL_get_default_timeout(const SSL *s) 951 { 952 return (s->method->internal->get_timeout()); 953 } 954 955 int 956 SSL_read(SSL *s, void *buf, int num) 957 { 958 if (s->internal->handshake_func == NULL) { 959 SSLerror(s, SSL_R_UNINITIALIZED); 960 return (-1); 961 } 962 963 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 964 s->internal->rwstate = SSL_NOTHING; 965 return (0); 966 } 967 return (s->method->internal->ssl_read(s, buf, num)); 968 } 969 970 int 971 SSL_peek(SSL *s, void *buf, int num) 972 { 973 if (s->internal->handshake_func == NULL) { 974 SSLerror(s, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 979 return (0); 980 } 981 return (s->method->internal->ssl_peek(s, buf, num)); 982 } 983 984 int 985 SSL_write(SSL *s, const void *buf, int num) 986 { 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(s, SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 993 s->internal->rwstate = SSL_NOTHING; 994 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 995 return (-1); 996 } 997 return (s->method->internal->ssl_write(s, buf, num)); 998 } 999 1000 int 1001 SSL_shutdown(SSL *s) 1002 { 1003 /* 1004 * Note that this function behaves differently from what one might 1005 * expect. Return values are 0 for no success (yet), 1006 * 1 for success; but calling it once is usually not enough, 1007 * even if blocking I/O is used (see ssl3_shutdown). 1008 */ 1009 1010 if (s->internal->handshake_func == NULL) { 1011 SSLerror(s, SSL_R_UNINITIALIZED); 1012 return (-1); 1013 } 1014 1015 if ((s != NULL) && !SSL_in_init(s)) 1016 return (s->method->internal->ssl_shutdown(s)); 1017 else 1018 return (1); 1019 } 1020 1021 int 1022 SSL_renegotiate(SSL *s) 1023 { 1024 if (s->internal->renegotiate == 0) 1025 s->internal->renegotiate = 1; 1026 1027 s->internal->new_session = 1; 1028 1029 return (s->method->internal->ssl_renegotiate(s)); 1030 } 1031 1032 int 1033 SSL_renegotiate_abbreviated(SSL *s) 1034 { 1035 if (s->internal->renegotiate == 0) 1036 s->internal->renegotiate = 1; 1037 1038 s->internal->new_session = 0; 1039 1040 return (s->method->internal->ssl_renegotiate(s)); 1041 } 1042 1043 int 1044 SSL_renegotiate_pending(SSL *s) 1045 { 1046 /* 1047 * Becomes true when negotiation is requested; 1048 * false again once a handshake has finished. 1049 */ 1050 return (s->internal->renegotiate != 0); 1051 } 1052 1053 long 1054 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1055 { 1056 long l; 1057 1058 switch (cmd) { 1059 case SSL_CTRL_GET_READ_AHEAD: 1060 return (s->internal->read_ahead); 1061 case SSL_CTRL_SET_READ_AHEAD: 1062 l = s->internal->read_ahead; 1063 s->internal->read_ahead = larg; 1064 return (l); 1065 1066 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1067 s->internal->msg_callback_arg = parg; 1068 return (1); 1069 1070 case SSL_CTRL_OPTIONS: 1071 return (s->internal->options|=larg); 1072 case SSL_CTRL_CLEAR_OPTIONS: 1073 return (s->internal->options&=~larg); 1074 case SSL_CTRL_MODE: 1075 return (s->internal->mode|=larg); 1076 case SSL_CTRL_CLEAR_MODE: 1077 return (s->internal->mode &=~larg); 1078 case SSL_CTRL_GET_MAX_CERT_LIST: 1079 return (s->internal->max_cert_list); 1080 case SSL_CTRL_SET_MAX_CERT_LIST: 1081 l = s->internal->max_cert_list; 1082 s->internal->max_cert_list = larg; 1083 return (l); 1084 case SSL_CTRL_SET_MTU: 1085 #ifndef OPENSSL_NO_DTLS1 1086 if (larg < (long)dtls1_min_mtu()) 1087 return (0); 1088 #endif 1089 if (SSL_IS_DTLS(s)) { 1090 D1I(s)->mtu = larg; 1091 return (larg); 1092 } 1093 return (0); 1094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1095 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1096 return (0); 1097 s->max_send_fragment = larg; 1098 return (1); 1099 case SSL_CTRL_GET_RI_SUPPORT: 1100 if (s->s3) 1101 return (S3I(s)->send_connection_binding); 1102 else return (0); 1103 default: 1104 if (SSL_IS_DTLS(s)) 1105 return dtls1_ctrl(s, cmd, larg, parg); 1106 return ssl3_ctrl(s, cmd, larg, parg); 1107 } 1108 } 1109 1110 long 1111 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1112 { 1113 switch (cmd) { 1114 case SSL_CTRL_SET_MSG_CALLBACK: 1115 s->internal->msg_callback = (void (*)(int write_p, int version, 1116 int content_type, const void *buf, size_t len, 1117 SSL *ssl, void *arg))(fp); 1118 return (1); 1119 1120 default: 1121 return (ssl3_callback_ctrl(s, cmd, fp)); 1122 } 1123 } 1124 1125 struct lhash_st_SSL_SESSION * 1126 SSL_CTX_sessions(SSL_CTX *ctx) 1127 { 1128 return (ctx->internal->sessions); 1129 } 1130 1131 long 1132 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1133 { 1134 long l; 1135 1136 switch (cmd) { 1137 case SSL_CTRL_GET_READ_AHEAD: 1138 return (ctx->internal->read_ahead); 1139 case SSL_CTRL_SET_READ_AHEAD: 1140 l = ctx->internal->read_ahead; 1141 ctx->internal->read_ahead = larg; 1142 return (l); 1143 1144 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1145 ctx->internal->msg_callback_arg = parg; 1146 return (1); 1147 1148 case SSL_CTRL_GET_MAX_CERT_LIST: 1149 return (ctx->internal->max_cert_list); 1150 case SSL_CTRL_SET_MAX_CERT_LIST: 1151 l = ctx->internal->max_cert_list; 1152 ctx->internal->max_cert_list = larg; 1153 return (l); 1154 1155 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1156 l = ctx->internal->session_cache_size; 1157 ctx->internal->session_cache_size = larg; 1158 return (l); 1159 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1160 return (ctx->internal->session_cache_size); 1161 case SSL_CTRL_SET_SESS_CACHE_MODE: 1162 l = ctx->internal->session_cache_mode; 1163 ctx->internal->session_cache_mode = larg; 1164 return (l); 1165 case SSL_CTRL_GET_SESS_CACHE_MODE: 1166 return (ctx->internal->session_cache_mode); 1167 1168 case SSL_CTRL_SESS_NUMBER: 1169 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1170 case SSL_CTRL_SESS_CONNECT: 1171 return (ctx->internal->stats.sess_connect); 1172 case SSL_CTRL_SESS_CONNECT_GOOD: 1173 return (ctx->internal->stats.sess_connect_good); 1174 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1175 return (ctx->internal->stats.sess_connect_renegotiate); 1176 case SSL_CTRL_SESS_ACCEPT: 1177 return (ctx->internal->stats.sess_accept); 1178 case SSL_CTRL_SESS_ACCEPT_GOOD: 1179 return (ctx->internal->stats.sess_accept_good); 1180 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1181 return (ctx->internal->stats.sess_accept_renegotiate); 1182 case SSL_CTRL_SESS_HIT: 1183 return (ctx->internal->stats.sess_hit); 1184 case SSL_CTRL_SESS_CB_HIT: 1185 return (ctx->internal->stats.sess_cb_hit); 1186 case SSL_CTRL_SESS_MISSES: 1187 return (ctx->internal->stats.sess_miss); 1188 case SSL_CTRL_SESS_TIMEOUTS: 1189 return (ctx->internal->stats.sess_timeout); 1190 case SSL_CTRL_SESS_CACHE_FULL: 1191 return (ctx->internal->stats.sess_cache_full); 1192 case SSL_CTRL_OPTIONS: 1193 return (ctx->internal->options|=larg); 1194 case SSL_CTRL_CLEAR_OPTIONS: 1195 return (ctx->internal->options&=~larg); 1196 case SSL_CTRL_MODE: 1197 return (ctx->internal->mode|=larg); 1198 case SSL_CTRL_CLEAR_MODE: 1199 return (ctx->internal->mode&=~larg); 1200 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1201 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1202 return (0); 1203 ctx->internal->max_send_fragment = larg; 1204 return (1); 1205 default: 1206 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1207 } 1208 } 1209 1210 long 1211 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1212 { 1213 switch (cmd) { 1214 case SSL_CTRL_SET_MSG_CALLBACK: 1215 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1216 int content_type, const void *buf, size_t len, SSL *ssl, 1217 void *arg))(fp); 1218 return (1); 1219 1220 default: 1221 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1222 } 1223 } 1224 1225 int 1226 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1227 { 1228 long l; 1229 1230 l = a->id - b->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235 } 1236 1237 int 1238 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1239 const SSL_CIPHER * const *bp) 1240 { 1241 long l; 1242 1243 l = (*ap)->id - (*bp)->id; 1244 if (l == 0L) 1245 return (0); 1246 else 1247 return ((l > 0) ? 1:-1); 1248 } 1249 1250 /* 1251 * Return a STACK of the ciphers available for the SSL and in order of 1252 * preference. 1253 */ 1254 STACK_OF(SSL_CIPHER) * 1255 SSL_get_ciphers(const SSL *s) 1256 { 1257 if (s != NULL) { 1258 if (s->cipher_list != NULL) { 1259 return (s->cipher_list); 1260 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1261 return (s->ctx->cipher_list); 1262 } 1263 } 1264 return (NULL); 1265 } 1266 1267 /* 1268 * Return a STACK of the ciphers available for the SSL and in order of 1269 * algorithm id. 1270 */ 1271 STACK_OF(SSL_CIPHER) * 1272 ssl_get_ciphers_by_id(SSL *s) 1273 { 1274 if (s != NULL) { 1275 if (s->internal->cipher_list_by_id != NULL) { 1276 return (s->internal->cipher_list_by_id); 1277 } else if ((s->ctx != NULL) && 1278 (s->ctx->internal->cipher_list_by_id != NULL)) { 1279 return (s->ctx->internal->cipher_list_by_id); 1280 } 1281 } 1282 return (NULL); 1283 } 1284 1285 /* See if we have any ECC cipher suites. */ 1286 int 1287 ssl_has_ecc_ciphers(SSL *s) 1288 { 1289 STACK_OF(SSL_CIPHER) *ciphers; 1290 unsigned long alg_k, alg_a; 1291 SSL_CIPHER *cipher; 1292 int i; 1293 1294 if (s->version == DTLS1_VERSION) 1295 return 0; 1296 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1297 return 0; 1298 1299 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1300 cipher = sk_SSL_CIPHER_value(ciphers, i); 1301 1302 alg_k = cipher->algorithm_mkey; 1303 alg_a = cipher->algorithm_auth; 1304 1305 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1306 return 1; 1307 } 1308 1309 return 0; 1310 } 1311 1312 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1313 const char * 1314 SSL_get_cipher_list(const SSL *s, int n) 1315 { 1316 SSL_CIPHER *c; 1317 STACK_OF(SSL_CIPHER) *sk; 1318 1319 if (s == NULL) 1320 return (NULL); 1321 sk = SSL_get_ciphers(s); 1322 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1323 return (NULL); 1324 c = sk_SSL_CIPHER_value(sk, n); 1325 if (c == NULL) 1326 return (NULL); 1327 return (c->name); 1328 } 1329 1330 STACK_OF(SSL_CIPHER) * 1331 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1332 { 1333 return ctx->cipher_list; 1334 } 1335 1336 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1337 int 1338 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1339 { 1340 STACK_OF(SSL_CIPHER) *sk; 1341 1342 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1343 &ctx->internal->cipher_list_by_id, str); 1344 /* 1345 * ssl_create_cipher_list may return an empty stack if it 1346 * was unable to find a cipher matching the given rule string 1347 * (for example if the rule string specifies a cipher which 1348 * has been disabled). This is not an error as far as 1349 * ssl_create_cipher_list is concerned, and hence 1350 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1351 * updated. 1352 */ 1353 if (sk == NULL) 1354 return (0); 1355 else if (sk_SSL_CIPHER_num(sk) == 0) { 1356 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1357 return (0); 1358 } 1359 return (1); 1360 } 1361 1362 /* Specify the ciphers to be used by the SSL. */ 1363 int 1364 SSL_set_cipher_list(SSL *s, const char *str) 1365 { 1366 STACK_OF(SSL_CIPHER) *sk; 1367 1368 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1369 &s->internal->cipher_list_by_id, str); 1370 /* see comment in SSL_CTX_set_cipher_list */ 1371 if (sk == NULL) 1372 return (0); 1373 else if (sk_SSL_CIPHER_num(sk) == 0) { 1374 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1375 return (0); 1376 } 1377 return (1); 1378 } 1379 1380 /* works well for SSLv2, not so good for SSLv3 */ 1381 char * 1382 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1383 { 1384 char *end; 1385 STACK_OF(SSL_CIPHER) *sk; 1386 SSL_CIPHER *c; 1387 size_t curlen = 0; 1388 int i; 1389 1390 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1391 return (NULL); 1392 1393 sk = s->session->ciphers; 1394 if (sk_SSL_CIPHER_num(sk) == 0) 1395 return (NULL); 1396 1397 buf[0] = '\0'; 1398 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1399 c = sk_SSL_CIPHER_value(sk, i); 1400 end = buf + curlen; 1401 if (strlcat(buf, c->name, len) >= len || 1402 (curlen = strlcat(buf, ":", len)) >= len) { 1403 /* remove truncated cipher from list */ 1404 *end = '\0'; 1405 break; 1406 } 1407 } 1408 /* remove trailing colon */ 1409 if ((end = strrchr(buf, ':')) != NULL) 1410 *end = '\0'; 1411 return (buf); 1412 } 1413 1414 int 1415 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1416 { 1417 SSL_CIPHER *cipher; 1418 int num_ciphers = 0; 1419 int i; 1420 1421 if (ciphers == NULL) 1422 return 0; 1423 1424 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1425 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1426 return 0; 1427 1428 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1429 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1430 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1431 continue; 1432 1433 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1434 return 0; 1435 1436 num_ciphers++; 1437 } 1438 1439 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1440 if (num_ciphers > 0 && !s->internal->renegotiate) { 1441 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1442 return 0; 1443 } 1444 1445 if (!CBB_flush(cbb)) 1446 return 0; 1447 1448 return 1; 1449 } 1450 1451 STACK_OF(SSL_CIPHER) * 1452 ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1453 { 1454 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1455 const SSL_CIPHER *cipher; 1456 uint16_t cipher_value, max_version; 1457 unsigned long cipher_id; 1458 1459 if (s->s3 != NULL) 1460 S3I(s)->send_connection_binding = 0; 1461 1462 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1463 SSLerror(s, ERR_R_MALLOC_FAILURE); 1464 goto err; 1465 } 1466 1467 while (CBS_len(cbs) > 0) { 1468 if (!CBS_get_u16(cbs, &cipher_value)) { 1469 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1470 goto err; 1471 } 1472 1473 cipher_id = SSL3_CK_ID | cipher_value; 1474 1475 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1476 /* 1477 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1478 * renegotiating. 1479 */ 1480 if (s->internal->renegotiate) { 1481 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1482 ssl3_send_alert(s, SSL3_AL_FATAL, 1483 SSL_AD_HANDSHAKE_FAILURE); 1484 1485 goto err; 1486 } 1487 S3I(s)->send_connection_binding = 1; 1488 continue; 1489 } 1490 1491 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1492 /* 1493 * TLS_FALLBACK_SCSV indicates that the client 1494 * previously tried a higher protocol version. 1495 * Fail if the current version is an unexpected 1496 * downgrade. 1497 */ 1498 max_version = ssl_max_server_version(s); 1499 if (max_version == 0 || s->version < max_version) { 1500 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1501 if (s->s3 != NULL) 1502 ssl3_send_alert(s, SSL3_AL_FATAL, 1503 SSL_AD_INAPPROPRIATE_FALLBACK); 1504 goto err; 1505 } 1506 continue; 1507 } 1508 1509 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1510 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1511 SSLerror(s, ERR_R_MALLOC_FAILURE); 1512 goto err; 1513 } 1514 } 1515 } 1516 1517 return (ciphers); 1518 1519 err: 1520 sk_SSL_CIPHER_free(ciphers); 1521 1522 return (NULL); 1523 } 1524 1525 1526 /* 1527 * Return a servername extension value if provided in Client Hello, or NULL. 1528 * So far, only host_name types are defined (RFC 3546). 1529 */ 1530 const char * 1531 SSL_get_servername(const SSL *s, const int type) 1532 { 1533 if (type != TLSEXT_NAMETYPE_host_name) 1534 return (NULL); 1535 1536 return (s->session && !s->tlsext_hostname ? 1537 s->session->tlsext_hostname : 1538 s->tlsext_hostname); 1539 } 1540 1541 int 1542 SSL_get_servername_type(const SSL *s) 1543 { 1544 if (s->session && 1545 (!s->tlsext_hostname ? 1546 s->session->tlsext_hostname : s->tlsext_hostname)) 1547 return (TLSEXT_NAMETYPE_host_name); 1548 return (-1); 1549 } 1550 1551 /* 1552 * SSL_select_next_proto implements standard protocol selection. It is 1553 * expected that this function is called from the callback set by 1554 * SSL_CTX_set_alpn_select_cb. 1555 * 1556 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1557 * strings. The length byte itself is not included in the length. A byte 1558 * string of length 0 is invalid. No byte string may be truncated. 1559 * 1560 * It returns either: 1561 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1562 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1563 */ 1564 int 1565 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1566 const unsigned char *server, unsigned int server_len, 1567 const unsigned char *client, unsigned int client_len) 1568 { 1569 unsigned int i, j; 1570 const unsigned char *result; 1571 int status = OPENSSL_NPN_UNSUPPORTED; 1572 1573 /* 1574 * For each protocol in server preference order, 1575 * see if we support it. 1576 */ 1577 for (i = 0; i < server_len; ) { 1578 for (j = 0; j < client_len; ) { 1579 if (server[i] == client[j] && 1580 memcmp(&server[i + 1], 1581 &client[j + 1], server[i]) == 0) { 1582 /* We found a match */ 1583 result = &server[i]; 1584 status = OPENSSL_NPN_NEGOTIATED; 1585 goto found; 1586 } 1587 j += client[j]; 1588 j++; 1589 } 1590 i += server[i]; 1591 i++; 1592 } 1593 1594 /* There's no overlap between our protocols and the server's list. */ 1595 result = client; 1596 status = OPENSSL_NPN_NO_OVERLAP; 1597 1598 found: 1599 *out = (unsigned char *) result + 1; 1600 *outlen = result[0]; 1601 return (status); 1602 } 1603 1604 /* SSL_get0_next_proto_negotiated is deprecated. */ 1605 void 1606 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1607 unsigned *len) 1608 { 1609 *data = NULL; 1610 *len = 0; 1611 } 1612 1613 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1614 void 1615 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1616 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1617 { 1618 } 1619 1620 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1621 void 1622 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1623 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1624 unsigned int inlen, void *arg), void *arg) 1625 { 1626 } 1627 1628 /* 1629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1630 * protocols, which must be in wire-format (i.e. a series of non-empty, 1631 * 8-bit length-prefixed strings). Returns 0 on success. 1632 */ 1633 int 1634 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1635 unsigned int protos_len) 1636 { 1637 int failed = 1; 1638 1639 if (protos == NULL || protos_len == 0) 1640 goto err; 1641 1642 free(ctx->internal->alpn_client_proto_list); 1643 ctx->internal->alpn_client_proto_list = NULL; 1644 ctx->internal->alpn_client_proto_list_len = 0; 1645 1646 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1647 == NULL) 1648 goto err; 1649 ctx->internal->alpn_client_proto_list_len = protos_len; 1650 1651 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1652 1653 failed = 0; 1654 1655 err: 1656 /* NOTE: Return values are the reverse of what you expect. */ 1657 return (failed); 1658 } 1659 1660 /* 1661 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1662 * protocols, which must be in wire-format (i.e. a series of non-empty, 1663 * 8-bit length-prefixed strings). Returns 0 on success. 1664 */ 1665 int 1666 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1667 unsigned int protos_len) 1668 { 1669 int failed = 1; 1670 1671 if (protos == NULL || protos_len == 0) 1672 goto err; 1673 1674 free(ssl->internal->alpn_client_proto_list); 1675 ssl->internal->alpn_client_proto_list = NULL; 1676 ssl->internal->alpn_client_proto_list_len = 0; 1677 1678 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1679 == NULL) 1680 goto err; 1681 ssl->internal->alpn_client_proto_list_len = protos_len; 1682 1683 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1684 1685 failed = 0; 1686 1687 err: 1688 /* NOTE: Return values are the reverse of what you expect. */ 1689 return (failed); 1690 } 1691 1692 /* 1693 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1694 * ClientHello processing in order to select an ALPN protocol from the 1695 * client's list of offered protocols. 1696 */ 1697 void 1698 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1699 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1700 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1701 { 1702 ctx->internal->alpn_select_cb = cb; 1703 ctx->internal->alpn_select_cb_arg = arg; 1704 } 1705 1706 /* 1707 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1708 * it sets data to point to len bytes of protocol name (not including the 1709 * leading length-prefix byte). If the server didn't respond with* a negotiated 1710 * protocol then len will be zero. 1711 */ 1712 void 1713 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1714 unsigned *len) 1715 { 1716 *data = NULL; 1717 *len = 0; 1718 1719 if (ssl->s3 != NULL) { 1720 *data = ssl->s3->internal->alpn_selected; 1721 *len = ssl->s3->internal->alpn_selected_len; 1722 } 1723 } 1724 1725 int 1726 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1727 const char *label, size_t llen, const unsigned char *p, size_t plen, 1728 int use_context) 1729 { 1730 return (tls1_export_keying_material(s, out, olen, 1731 label, llen, p, plen, use_context)); 1732 } 1733 1734 static unsigned long 1735 ssl_session_hash(const SSL_SESSION *a) 1736 { 1737 unsigned long l; 1738 1739 l = (unsigned long) 1740 ((unsigned int) a->session_id[0] )| 1741 ((unsigned int) a->session_id[1]<< 8L)| 1742 ((unsigned long)a->session_id[2]<<16L)| 1743 ((unsigned long)a->session_id[3]<<24L); 1744 return (l); 1745 } 1746 1747 /* 1748 * NB: If this function (or indeed the hash function which uses a sort of 1749 * coarser function than this one) is changed, ensure 1750 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1751 * able to construct an SSL_SESSION that will collide with any existing session 1752 * with a matching session ID. 1753 */ 1754 static int 1755 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1756 { 1757 if (a->ssl_version != b->ssl_version) 1758 return (1); 1759 if (a->session_id_length != b->session_id_length) 1760 return (1); 1761 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1762 return (1); 1763 return (0); 1764 } 1765 1766 /* 1767 * These wrapper functions should remain rather than redeclaring 1768 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1769 * variable. The reason is that the functions aren't static, they're exposed via 1770 * ssl.h. 1771 */ 1772 static unsigned long 1773 ssl_session_LHASH_HASH(const void *arg) 1774 { 1775 const SSL_SESSION *a = arg; 1776 1777 return ssl_session_hash(a); 1778 } 1779 1780 static int 1781 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1782 { 1783 const SSL_SESSION *a = arg1; 1784 const SSL_SESSION *b = arg2; 1785 1786 return ssl_session_cmp(a, b); 1787 } 1788 1789 SSL_CTX * 1790 SSL_CTX_new(const SSL_METHOD *meth) 1791 { 1792 SSL_CTX *ret; 1793 1794 if (!OPENSSL_init_ssl(0, NULL)) { 1795 SSLerrorx(SSL_R_LIBRARY_BUG); 1796 return (NULL); 1797 } 1798 1799 if (meth == NULL) { 1800 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1801 return (NULL); 1802 } 1803 1804 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1805 SSLerrorx(ERR_R_MALLOC_FAILURE); 1806 return (NULL); 1807 } 1808 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1809 free(ret); 1810 SSLerrorx(ERR_R_MALLOC_FAILURE); 1811 return (NULL); 1812 } 1813 1814 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1815 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1816 goto err; 1817 } 1818 1819 ret->method = meth; 1820 ret->internal->min_version = meth->internal->min_version; 1821 ret->internal->max_version = meth->internal->max_version; 1822 1823 ret->cert_store = NULL; 1824 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1825 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1826 ret->internal->session_cache_head = NULL; 1827 ret->internal->session_cache_tail = NULL; 1828 1829 /* We take the system default */ 1830 ret->session_timeout = meth->internal->get_timeout(); 1831 1832 ret->internal->new_session_cb = 0; 1833 ret->internal->remove_session_cb = 0; 1834 ret->internal->get_session_cb = 0; 1835 ret->internal->generate_session_id = 0; 1836 1837 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1838 1839 ret->references = 1; 1840 ret->internal->quiet_shutdown = 0; 1841 1842 ret->internal->info_callback = NULL; 1843 1844 ret->internal->app_verify_callback = 0; 1845 ret->internal->app_verify_arg = NULL; 1846 1847 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1848 ret->internal->read_ahead = 0; 1849 ret->internal->msg_callback = 0; 1850 ret->internal->msg_callback_arg = NULL; 1851 ret->verify_mode = SSL_VERIFY_NONE; 1852 ret->sid_ctx_length = 0; 1853 ret->internal->default_verify_callback = NULL; 1854 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1855 goto err; 1856 1857 ret->default_passwd_callback = 0; 1858 ret->default_passwd_callback_userdata = NULL; 1859 ret->internal->client_cert_cb = 0; 1860 ret->internal->app_gen_cookie_cb = 0; 1861 ret->internal->app_verify_cookie_cb = 0; 1862 1863 ret->internal->sessions = lh_SSL_SESSION_new(); 1864 if (ret->internal->sessions == NULL) 1865 goto err; 1866 ret->cert_store = X509_STORE_new(); 1867 if (ret->cert_store == NULL) 1868 goto err; 1869 1870 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1871 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1872 if (ret->cipher_list == NULL || 1873 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1874 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1875 goto err2; 1876 } 1877 1878 ret->param = X509_VERIFY_PARAM_new(); 1879 if (!ret->param) 1880 goto err; 1881 1882 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1883 goto err; 1884 1885 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1886 1887 ret->extra_certs = NULL; 1888 1889 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1890 1891 ret->internal->tlsext_servername_callback = 0; 1892 ret->internal->tlsext_servername_arg = NULL; 1893 1894 /* Setup RFC4507 ticket keys */ 1895 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1896 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1897 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1898 1899 ret->internal->tlsext_status_cb = 0; 1900 ret->internal->tlsext_status_arg = NULL; 1901 1902 #ifndef OPENSSL_NO_ENGINE 1903 ret->internal->client_cert_engine = NULL; 1904 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1905 #define eng_strx(x) #x 1906 #define eng_str(x) eng_strx(x) 1907 /* Use specific client engine automatically... ignore errors */ 1908 { 1909 ENGINE *eng; 1910 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1911 if (!eng) { 1912 ERR_clear_error(); 1913 ENGINE_load_builtin_engines(); 1914 eng = ENGINE_by_id(eng_str( 1915 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1916 } 1917 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1918 ERR_clear_error(); 1919 } 1920 #endif 1921 #endif 1922 /* 1923 * Default is to connect to non-RI servers. When RI is more widely 1924 * deployed might change this. 1925 */ 1926 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1927 1928 return (ret); 1929 err: 1930 SSLerrorx(ERR_R_MALLOC_FAILURE); 1931 err2: 1932 SSL_CTX_free(ret); 1933 return (NULL); 1934 } 1935 1936 void 1937 SSL_CTX_free(SSL_CTX *ctx) 1938 { 1939 int i; 1940 1941 if (ctx == NULL) 1942 return; 1943 1944 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1945 if (i > 0) 1946 return; 1947 1948 X509_VERIFY_PARAM_free(ctx->param); 1949 1950 /* 1951 * Free internal session cache. However: the remove_cb() may reference 1952 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1953 * after the sessions were flushed. 1954 * As the ex_data handling routines might also touch the session cache, 1955 * the most secure solution seems to be: empty (flush) the cache, then 1956 * free ex_data, then finally free the cache. 1957 * (See ticket [openssl.org #212].) 1958 */ 1959 if (ctx->internal->sessions != NULL) 1960 SSL_CTX_flush_sessions(ctx, 0); 1961 1962 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1963 1964 lh_SSL_SESSION_free(ctx->internal->sessions); 1965 1966 X509_STORE_free(ctx->cert_store); 1967 sk_SSL_CIPHER_free(ctx->cipher_list); 1968 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1969 ssl_cert_free(ctx->internal->cert); 1970 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1971 sk_X509_pop_free(ctx->extra_certs, X509_free); 1972 1973 #ifndef OPENSSL_NO_SRTP 1974 if (ctx->internal->srtp_profiles) 1975 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1976 #endif 1977 1978 #ifndef OPENSSL_NO_ENGINE 1979 if (ctx->internal->client_cert_engine) 1980 ENGINE_finish(ctx->internal->client_cert_engine); 1981 #endif 1982 1983 free(ctx->internal->tlsext_ecpointformatlist); 1984 free(ctx->internal->tlsext_supportedgroups); 1985 1986 free(ctx->internal->alpn_client_proto_list); 1987 1988 free(ctx->internal); 1989 free(ctx); 1990 } 1991 1992 int 1993 SSL_CTX_up_ref(SSL_CTX *ctx) 1994 { 1995 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1996 return ((refs > 1) ? 1 : 0); 1997 } 1998 1999 pem_password_cb * 2000 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2001 { 2002 return (ctx->default_passwd_callback); 2003 } 2004 2005 void 2006 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2007 { 2008 ctx->default_passwd_callback = cb; 2009 } 2010 2011 void * 2012 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2013 { 2014 return ctx->default_passwd_callback_userdata; 2015 } 2016 2017 void 2018 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2019 { 2020 ctx->default_passwd_callback_userdata = u; 2021 } 2022 2023 void 2024 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2025 void *), void *arg) 2026 { 2027 ctx->internal->app_verify_callback = cb; 2028 ctx->internal->app_verify_arg = arg; 2029 } 2030 2031 void 2032 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2033 { 2034 ctx->verify_mode = mode; 2035 ctx->internal->default_verify_callback = cb; 2036 } 2037 2038 void 2039 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2040 { 2041 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2042 } 2043 2044 void 2045 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2046 { 2047 int rsa_enc, rsa_sign, dh_tmp; 2048 int have_ecc_cert; 2049 unsigned long mask_k, mask_a; 2050 X509 *x = NULL; 2051 CERT_PKEY *cpk; 2052 2053 if (c == NULL) 2054 return; 2055 2056 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2057 c->dh_tmp_auto != 0); 2058 2059 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2060 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2061 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2062 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2063 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2064 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2065 2066 mask_k = 0; 2067 mask_a = 0; 2068 2069 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2070 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2071 mask_k |= SSL_kGOST; 2072 mask_a |= SSL_aGOST01; 2073 } 2074 2075 if (rsa_enc) 2076 mask_k |= SSL_kRSA; 2077 2078 if (dh_tmp) 2079 mask_k |= SSL_kDHE; 2080 2081 if (rsa_enc || rsa_sign) 2082 mask_a |= SSL_aRSA; 2083 2084 mask_a |= SSL_aNULL; 2085 2086 /* 2087 * An ECC certificate may be usable for ECDH and/or 2088 * ECDSA cipher suites depending on the key usage extension. 2089 */ 2090 if (have_ecc_cert) { 2091 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2092 2093 /* This call populates extension flags (ex_flags). */ 2094 X509_check_purpose(x, -1, 0); 2095 2096 /* Key usage, if present, must allow signing. */ 2097 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2098 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2099 mask_a |= SSL_aECDSA; 2100 } 2101 2102 mask_k |= SSL_kECDHE; 2103 2104 c->mask_k = mask_k; 2105 c->mask_a = mask_a; 2106 c->valid = 1; 2107 } 2108 2109 /* See if this handshake is using an ECC cipher suite. */ 2110 int 2111 ssl_using_ecc_cipher(SSL *s) 2112 { 2113 unsigned long alg_a, alg_k; 2114 2115 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2116 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2117 2118 return SSI(s)->tlsext_ecpointformatlist != NULL && 2119 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2120 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2121 } 2122 2123 int 2124 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2125 { 2126 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2127 unsigned long alg_a; 2128 2129 alg_a = cs->algorithm_auth; 2130 2131 if (alg_a & SSL_aECDSA) { 2132 /* This call populates extension flags (ex_flags). */ 2133 X509_check_purpose(x, -1, 0); 2134 2135 /* Key usage, if present, must allow signing. */ 2136 if ((x->ex_flags & EXFLAG_KUSAGE) && 2137 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2138 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2139 return (0); 2140 } 2141 } 2142 2143 return (1); 2144 } 2145 2146 CERT_PKEY * 2147 ssl_get_server_send_pkey(const SSL *s) 2148 { 2149 unsigned long alg_a; 2150 CERT *c; 2151 int i; 2152 2153 c = s->cert; 2154 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2155 2156 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2157 2158 if (alg_a & SSL_aECDSA) { 2159 i = SSL_PKEY_ECC; 2160 } else if (alg_a & SSL_aRSA) { 2161 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2162 i = SSL_PKEY_RSA_SIGN; 2163 else 2164 i = SSL_PKEY_RSA_ENC; 2165 } else if (alg_a & SSL_aGOST01) { 2166 i = SSL_PKEY_GOST01; 2167 } else { /* if (alg_a & SSL_aNULL) */ 2168 SSLerror(s, ERR_R_INTERNAL_ERROR); 2169 return (NULL); 2170 } 2171 2172 return (c->pkeys + i); 2173 } 2174 2175 X509 * 2176 ssl_get_server_send_cert(const SSL *s) 2177 { 2178 CERT_PKEY *cpk; 2179 2180 cpk = ssl_get_server_send_pkey(s); 2181 if (!cpk) 2182 return (NULL); 2183 return (cpk->x509); 2184 } 2185 2186 EVP_PKEY * 2187 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2188 { 2189 unsigned long alg_a; 2190 CERT *c; 2191 int idx = -1; 2192 2193 alg_a = cipher->algorithm_auth; 2194 c = s->cert; 2195 2196 if (alg_a & SSL_aRSA) { 2197 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2198 idx = SSL_PKEY_RSA_SIGN; 2199 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2200 idx = SSL_PKEY_RSA_ENC; 2201 } else if ((alg_a & SSL_aECDSA) && 2202 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2203 idx = SSL_PKEY_ECC; 2204 if (idx == -1) { 2205 SSLerror(s, ERR_R_INTERNAL_ERROR); 2206 return (NULL); 2207 } 2208 if (pmd) 2209 *pmd = c->pkeys[idx].digest; 2210 return (c->pkeys[idx].privatekey); 2211 } 2212 2213 DH * 2214 ssl_get_auto_dh(SSL *s) 2215 { 2216 CERT_PKEY *cpk; 2217 int keylen; 2218 DH *dhp; 2219 2220 if (s->cert->dh_tmp_auto == 2) { 2221 keylen = 1024; 2222 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2223 keylen = 1024; 2224 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2225 keylen = 3072; 2226 } else { 2227 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2228 return (NULL); 2229 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2230 return (NULL); 2231 keylen = EVP_PKEY_bits(cpk->privatekey); 2232 } 2233 2234 if ((dhp = DH_new()) == NULL) 2235 return (NULL); 2236 2237 dhp->g = BN_new(); 2238 if (dhp->g != NULL) 2239 BN_set_word(dhp->g, 2); 2240 2241 if (keylen >= 8192) 2242 dhp->p = get_rfc3526_prime_8192(NULL); 2243 else if (keylen >= 4096) 2244 dhp->p = get_rfc3526_prime_4096(NULL); 2245 else if (keylen >= 3072) 2246 dhp->p = get_rfc3526_prime_3072(NULL); 2247 else if (keylen >= 2048) 2248 dhp->p = get_rfc3526_prime_2048(NULL); 2249 else if (keylen >= 1536) 2250 dhp->p = get_rfc3526_prime_1536(NULL); 2251 else 2252 dhp->p = get_rfc2409_prime_1024(NULL); 2253 2254 if (dhp->p == NULL || dhp->g == NULL) { 2255 DH_free(dhp); 2256 return (NULL); 2257 } 2258 return (dhp); 2259 } 2260 2261 void 2262 ssl_update_cache(SSL *s, int mode) 2263 { 2264 int i; 2265 2266 /* 2267 * If the session_id_length is 0, we are not supposed to cache it, 2268 * and it would be rather hard to do anyway :-) 2269 */ 2270 if (s->session->session_id_length == 0) 2271 return; 2272 2273 i = s->session_ctx->internal->session_cache_mode; 2274 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2275 || SSL_CTX_add_session(s->session_ctx, s->session)) 2276 && (s->session_ctx->internal->new_session_cb != NULL)) { 2277 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2278 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2279 SSL_SESSION_free(s->session); 2280 } 2281 2282 /* auto flush every 255 connections */ 2283 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2284 ((i & mode) == mode)) { 2285 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2286 s->session_ctx->internal->stats.sess_connect_good : 2287 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2288 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2289 } 2290 } 2291 } 2292 2293 const SSL_METHOD * 2294 SSL_get_ssl_method(SSL *s) 2295 { 2296 return (s->method); 2297 } 2298 2299 int 2300 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2301 { 2302 int conn = -1; 2303 int ret = 1; 2304 2305 if (s->method != meth) { 2306 if (s->internal->handshake_func != NULL) 2307 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2308 2309 if (s->method->internal->version == meth->internal->version) 2310 s->method = meth; 2311 else { 2312 s->method->internal->ssl_free(s); 2313 s->method = meth; 2314 ret = s->method->internal->ssl_new(s); 2315 } 2316 2317 if (conn == 1) 2318 s->internal->handshake_func = meth->internal->ssl_connect; 2319 else if (conn == 0) 2320 s->internal->handshake_func = meth->internal->ssl_accept; 2321 } 2322 return (ret); 2323 } 2324 2325 int 2326 SSL_get_error(const SSL *s, int i) 2327 { 2328 int reason; 2329 unsigned long l; 2330 BIO *bio; 2331 2332 if (i > 0) 2333 return (SSL_ERROR_NONE); 2334 2335 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2336 * etc, where we do encode the error */ 2337 if ((l = ERR_peek_error()) != 0) { 2338 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2339 return (SSL_ERROR_SYSCALL); 2340 else 2341 return (SSL_ERROR_SSL); 2342 } 2343 2344 if ((i < 0) && SSL_want_read(s)) { 2345 bio = SSL_get_rbio(s); 2346 if (BIO_should_read(bio)) { 2347 return (SSL_ERROR_WANT_READ); 2348 } else if (BIO_should_write(bio)) { 2349 /* 2350 * This one doesn't make too much sense... We never 2351 * try to write to the rbio, and an application 2352 * program where rbio and wbio are separate couldn't 2353 * even know what it should wait for. However if we 2354 * ever set s->internal->rwstate incorrectly (so that we have 2355 * SSL_want_read(s) instead of SSL_want_write(s)) 2356 * and rbio and wbio *are* the same, this test works 2357 * around that bug; so it might be safer to keep it. 2358 */ 2359 return (SSL_ERROR_WANT_WRITE); 2360 } else if (BIO_should_io_special(bio)) { 2361 reason = BIO_get_retry_reason(bio); 2362 if (reason == BIO_RR_CONNECT) 2363 return (SSL_ERROR_WANT_CONNECT); 2364 else if (reason == BIO_RR_ACCEPT) 2365 return (SSL_ERROR_WANT_ACCEPT); 2366 else 2367 return (SSL_ERROR_SYSCALL); /* unknown */ 2368 } 2369 } 2370 2371 if ((i < 0) && SSL_want_write(s)) { 2372 bio = SSL_get_wbio(s); 2373 if (BIO_should_write(bio)) { 2374 return (SSL_ERROR_WANT_WRITE); 2375 } else if (BIO_should_read(bio)) { 2376 /* 2377 * See above (SSL_want_read(s) with 2378 * BIO_should_write(bio)) 2379 */ 2380 return (SSL_ERROR_WANT_READ); 2381 } else if (BIO_should_io_special(bio)) { 2382 reason = BIO_get_retry_reason(bio); 2383 if (reason == BIO_RR_CONNECT) 2384 return (SSL_ERROR_WANT_CONNECT); 2385 else if (reason == BIO_RR_ACCEPT) 2386 return (SSL_ERROR_WANT_ACCEPT); 2387 else 2388 return (SSL_ERROR_SYSCALL); 2389 } 2390 } 2391 if ((i < 0) && SSL_want_x509_lookup(s)) { 2392 return (SSL_ERROR_WANT_X509_LOOKUP); 2393 } 2394 2395 if (i == 0) { 2396 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2397 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2398 return (SSL_ERROR_ZERO_RETURN); 2399 } 2400 return (SSL_ERROR_SYSCALL); 2401 } 2402 2403 int 2404 SSL_do_handshake(SSL *s) 2405 { 2406 int ret = 1; 2407 2408 if (s->internal->handshake_func == NULL) { 2409 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2410 return (-1); 2411 } 2412 2413 s->method->internal->ssl_renegotiate_check(s); 2414 2415 if (SSL_in_init(s) || SSL_in_before(s)) { 2416 ret = s->internal->handshake_func(s); 2417 } 2418 return (ret); 2419 } 2420 2421 /* 2422 * For the next 2 functions, SSL_clear() sets shutdown and so 2423 * one of these calls will reset it 2424 */ 2425 void 2426 SSL_set_accept_state(SSL *s) 2427 { 2428 s->server = 1; 2429 s->internal->shutdown = 0; 2430 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2431 s->internal->handshake_func = s->method->internal->ssl_accept; 2432 /* clear the current cipher */ 2433 ssl_clear_cipher_ctx(s); 2434 ssl_clear_hash_ctx(&s->read_hash); 2435 ssl_clear_hash_ctx(&s->internal->write_hash); 2436 } 2437 2438 void 2439 SSL_set_connect_state(SSL *s) 2440 { 2441 s->server = 0; 2442 s->internal->shutdown = 0; 2443 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2444 s->internal->handshake_func = s->method->internal->ssl_connect; 2445 /* clear the current cipher */ 2446 ssl_clear_cipher_ctx(s); 2447 ssl_clear_hash_ctx(&s->read_hash); 2448 ssl_clear_hash_ctx(&s->internal->write_hash); 2449 } 2450 2451 int 2452 ssl_undefined_function(SSL *s) 2453 { 2454 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2455 return (0); 2456 } 2457 2458 int 2459 ssl_undefined_void_function(void) 2460 { 2461 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2462 return (0); 2463 } 2464 2465 int 2466 ssl_undefined_const_function(const SSL *s) 2467 { 2468 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2469 return (0); 2470 } 2471 2472 const char * 2473 ssl_version_string(int ver) 2474 { 2475 switch (ver) { 2476 case DTLS1_VERSION: 2477 return (SSL_TXT_DTLS1); 2478 case TLS1_VERSION: 2479 return (SSL_TXT_TLSV1); 2480 case TLS1_1_VERSION: 2481 return (SSL_TXT_TLSV1_1); 2482 case TLS1_2_VERSION: 2483 return (SSL_TXT_TLSV1_2); 2484 default: 2485 return ("unknown"); 2486 } 2487 } 2488 2489 const char * 2490 SSL_get_version(const SSL *s) 2491 { 2492 return ssl_version_string(s->version); 2493 } 2494 2495 SSL * 2496 SSL_dup(SSL *s) 2497 { 2498 STACK_OF(X509_NAME) *sk; 2499 X509_NAME *xn; 2500 SSL *ret; 2501 int i; 2502 2503 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2504 return (NULL); 2505 2506 ret->version = s->version; 2507 ret->internal->type = s->internal->type; 2508 ret->method = s->method; 2509 2510 if (s->session != NULL) { 2511 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2512 SSL_copy_session_id(ret, s); 2513 } else { 2514 /* 2515 * No session has been established yet, so we have to expect 2516 * that s->cert or ret->cert will be changed later -- 2517 * they should not both point to the same object, 2518 * and thus we can't use SSL_copy_session_id. 2519 */ 2520 2521 ret->method->internal->ssl_free(ret); 2522 ret->method = s->method; 2523 ret->method->internal->ssl_new(ret); 2524 2525 if (s->cert != NULL) { 2526 ssl_cert_free(ret->cert); 2527 ret->cert = ssl_cert_dup(s->cert); 2528 if (ret->cert == NULL) 2529 goto err; 2530 } 2531 2532 SSL_set_session_id_context(ret, 2533 s->sid_ctx, s->sid_ctx_length); 2534 } 2535 2536 ret->internal->options = s->internal->options; 2537 ret->internal->mode = s->internal->mode; 2538 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2539 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2540 ret->internal->msg_callback = s->internal->msg_callback; 2541 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2542 SSL_set_verify(ret, SSL_get_verify_mode(s), 2543 SSL_get_verify_callback(s)); 2544 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2545 ret->internal->generate_session_id = s->internal->generate_session_id; 2546 2547 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2548 2549 ret->internal->debug = s->internal->debug; 2550 2551 /* copy app data, a little dangerous perhaps */ 2552 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2553 &ret->internal->ex_data, &s->internal->ex_data)) 2554 goto err; 2555 2556 /* setup rbio, and wbio */ 2557 if (s->rbio != NULL) { 2558 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2559 goto err; 2560 } 2561 if (s->wbio != NULL) { 2562 if (s->wbio != s->rbio) { 2563 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2564 goto err; 2565 } else 2566 ret->wbio = ret->rbio; 2567 } 2568 ret->internal->rwstate = s->internal->rwstate; 2569 ret->internal->in_handshake = s->internal->in_handshake; 2570 ret->internal->handshake_func = s->internal->handshake_func; 2571 ret->server = s->server; 2572 ret->internal->renegotiate = s->internal->renegotiate; 2573 ret->internal->new_session = s->internal->new_session; 2574 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2575 ret->internal->shutdown = s->internal->shutdown; 2576 /* SSL_dup does not really work at any state, though */ 2577 S3I(ret)->hs.state = S3I(s)->hs.state; 2578 ret->internal->rstate = s->internal->rstate; 2579 2580 /* 2581 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2582 * ret->init_off 2583 */ 2584 ret->internal->init_num = 0; 2585 2586 ret->internal->hit = s->internal->hit; 2587 2588 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2589 2590 /* dup the cipher_list and cipher_list_by_id stacks */ 2591 if (s->cipher_list != NULL) { 2592 if ((ret->cipher_list = 2593 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2594 goto err; 2595 } 2596 if (s->internal->cipher_list_by_id != NULL) { 2597 if ((ret->internal->cipher_list_by_id = 2598 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2599 goto err; 2600 } 2601 2602 /* Dup the client_CA list */ 2603 if (s->internal->client_CA != NULL) { 2604 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2605 ret->internal->client_CA = sk; 2606 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2607 xn = sk_X509_NAME_value(sk, i); 2608 if (sk_X509_NAME_set(sk, i, 2609 X509_NAME_dup(xn)) == NULL) { 2610 X509_NAME_free(xn); 2611 goto err; 2612 } 2613 } 2614 } 2615 2616 if (0) { 2617 err: 2618 if (ret != NULL) 2619 SSL_free(ret); 2620 ret = NULL; 2621 } 2622 return (ret); 2623 } 2624 2625 void 2626 ssl_clear_cipher_ctx(SSL *s) 2627 { 2628 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2629 s->enc_read_ctx = NULL; 2630 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2631 s->internal->enc_write_ctx = NULL; 2632 2633 if (s->internal->aead_read_ctx != NULL) { 2634 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2635 free(s->internal->aead_read_ctx); 2636 s->internal->aead_read_ctx = NULL; 2637 } 2638 if (s->internal->aead_write_ctx != NULL) { 2639 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2640 free(s->internal->aead_write_ctx); 2641 s->internal->aead_write_ctx = NULL; 2642 } 2643 2644 } 2645 2646 /* Fix this function so that it takes an optional type parameter */ 2647 X509 * 2648 SSL_get_certificate(const SSL *s) 2649 { 2650 if (s->cert != NULL) 2651 return (s->cert->key->x509); 2652 else 2653 return (NULL); 2654 } 2655 2656 /* Fix this function so that it takes an optional type parameter */ 2657 EVP_PKEY * 2658 SSL_get_privatekey(SSL *s) 2659 { 2660 if (s->cert != NULL) 2661 return (s->cert->key->privatekey); 2662 else 2663 return (NULL); 2664 } 2665 2666 const SSL_CIPHER * 2667 SSL_get_current_cipher(const SSL *s) 2668 { 2669 if ((s->session != NULL) && (s->session->cipher != NULL)) 2670 return (s->session->cipher); 2671 return (NULL); 2672 } 2673 const void * 2674 SSL_get_current_compression(SSL *s) 2675 { 2676 return (NULL); 2677 } 2678 2679 const void * 2680 SSL_get_current_expansion(SSL *s) 2681 { 2682 return (NULL); 2683 } 2684 2685 size_t 2686 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2687 { 2688 size_t len = sizeof(s->s3->client_random); 2689 2690 if (out == NULL) 2691 return len; 2692 2693 if (len > max_out) 2694 len = max_out; 2695 2696 memcpy(out, s->s3->client_random, len); 2697 2698 return len; 2699 } 2700 2701 size_t 2702 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2703 { 2704 size_t len = sizeof(s->s3->server_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->server_random, len); 2713 2714 return len; 2715 } 2716 2717 int 2718 ssl_init_wbio_buffer(SSL *s, int push) 2719 { 2720 BIO *bbio; 2721 2722 if (s->bbio == NULL) { 2723 bbio = BIO_new(BIO_f_buffer()); 2724 if (bbio == NULL) 2725 return (0); 2726 s->bbio = bbio; 2727 } else { 2728 bbio = s->bbio; 2729 if (s->bbio == s->wbio) 2730 s->wbio = BIO_pop(s->wbio); 2731 } 2732 (void)BIO_reset(bbio); 2733 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2734 if (!BIO_set_read_buffer_size(bbio, 1)) { 2735 SSLerror(s, ERR_R_BUF_LIB); 2736 return (0); 2737 } 2738 if (push) { 2739 if (s->wbio != bbio) 2740 s->wbio = BIO_push(bbio, s->wbio); 2741 } else { 2742 if (s->wbio == bbio) 2743 s->wbio = BIO_pop(bbio); 2744 } 2745 return (1); 2746 } 2747 2748 void 2749 ssl_free_wbio_buffer(SSL *s) 2750 { 2751 if (s == NULL) 2752 return; 2753 2754 if (s->bbio == NULL) 2755 return; 2756 2757 if (s->bbio == s->wbio) { 2758 /* remove buffering */ 2759 s->wbio = BIO_pop(s->wbio); 2760 } 2761 BIO_free(s->bbio); 2762 s->bbio = NULL; 2763 } 2764 2765 void 2766 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2767 { 2768 ctx->internal->quiet_shutdown = mode; 2769 } 2770 2771 int 2772 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2773 { 2774 return (ctx->internal->quiet_shutdown); 2775 } 2776 2777 void 2778 SSL_set_quiet_shutdown(SSL *s, int mode) 2779 { 2780 s->internal->quiet_shutdown = mode; 2781 } 2782 2783 int 2784 SSL_get_quiet_shutdown(const SSL *s) 2785 { 2786 return (s->internal->quiet_shutdown); 2787 } 2788 2789 void 2790 SSL_set_shutdown(SSL *s, int mode) 2791 { 2792 s->internal->shutdown = mode; 2793 } 2794 2795 int 2796 SSL_get_shutdown(const SSL *s) 2797 { 2798 return (s->internal->shutdown); 2799 } 2800 2801 int 2802 SSL_version(const SSL *s) 2803 { 2804 return (s->version); 2805 } 2806 2807 SSL_CTX * 2808 SSL_get_SSL_CTX(const SSL *ssl) 2809 { 2810 return (ssl->ctx); 2811 } 2812 2813 SSL_CTX * 2814 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2815 { 2816 CERT *ocert = ssl->cert; 2817 2818 if (ssl->ctx == ctx) 2819 return (ssl->ctx); 2820 if (ctx == NULL) 2821 ctx = ssl->initial_ctx; 2822 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2823 if (ocert != NULL) { 2824 int i; 2825 /* Copy negotiated digests from original certificate. */ 2826 for (i = 0; i < SSL_PKEY_NUM; i++) 2827 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2828 ssl_cert_free(ocert); 2829 } 2830 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2831 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2832 ssl->ctx = ctx; 2833 return (ssl->ctx); 2834 } 2835 2836 int 2837 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2838 { 2839 return (X509_STORE_set_default_paths(ctx->cert_store)); 2840 } 2841 2842 int 2843 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2844 const char *CApath) 2845 { 2846 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2847 } 2848 2849 int 2850 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2851 { 2852 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2853 } 2854 2855 void 2856 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2857 { 2858 ssl->internal->info_callback = cb; 2859 } 2860 2861 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2862 { 2863 return (ssl->internal->info_callback); 2864 } 2865 2866 int 2867 SSL_state(const SSL *ssl) 2868 { 2869 return (S3I(ssl)->hs.state); 2870 } 2871 2872 void 2873 SSL_set_state(SSL *ssl, int state) 2874 { 2875 S3I(ssl)->hs.state = state; 2876 } 2877 2878 void 2879 SSL_set_verify_result(SSL *ssl, long arg) 2880 { 2881 ssl->verify_result = arg; 2882 } 2883 2884 long 2885 SSL_get_verify_result(const SSL *ssl) 2886 { 2887 return (ssl->verify_result); 2888 } 2889 2890 int 2891 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2892 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2893 { 2894 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2895 new_func, dup_func, free_func)); 2896 } 2897 2898 int 2899 SSL_set_ex_data(SSL *s, int idx, void *arg) 2900 { 2901 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2902 } 2903 2904 void * 2905 SSL_get_ex_data(const SSL *s, int idx) 2906 { 2907 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2908 } 2909 2910 int 2911 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2912 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2913 { 2914 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2915 new_func, dup_func, free_func)); 2916 } 2917 2918 int 2919 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2920 { 2921 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2922 } 2923 2924 void * 2925 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2926 { 2927 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2928 } 2929 2930 int 2931 ssl_ok(SSL *s) 2932 { 2933 return (1); 2934 } 2935 2936 X509_STORE * 2937 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2938 { 2939 return (ctx->cert_store); 2940 } 2941 2942 void 2943 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2944 { 2945 X509_STORE_free(ctx->cert_store); 2946 ctx->cert_store = store; 2947 } 2948 2949 X509 * 2950 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2951 { 2952 if (ctx->internal->cert == NULL) 2953 return NULL; 2954 2955 return ctx->internal->cert->key->x509; 2956 } 2957 2958 int 2959 SSL_want(const SSL *s) 2960 { 2961 return (s->internal->rwstate); 2962 } 2963 2964 void 2965 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2966 int keylength)) 2967 { 2968 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2969 } 2970 2971 void 2972 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2973 int keylength)) 2974 { 2975 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2976 } 2977 2978 void 2979 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2980 int keylength)) 2981 { 2982 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2983 } 2984 2985 void 2986 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2987 int keylength)) 2988 { 2989 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2990 } 2991 2992 void 2993 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2994 int is_export, int keylength)) 2995 { 2996 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2997 (void (*)(void))ecdh); 2998 } 2999 3000 void 3001 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3002 int keylength)) 3003 { 3004 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3005 } 3006 3007 3008 void 3009 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3010 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3011 { 3012 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3013 (void (*)(void))cb); 3014 } 3015 3016 void 3017 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3018 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3019 { 3020 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3021 } 3022 3023 void 3024 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3025 { 3026 if (*hash) 3027 EVP_MD_CTX_destroy(*hash); 3028 *hash = NULL; 3029 } 3030 3031 void 3032 SSL_set_debug(SSL *s, int debug) 3033 { 3034 s->internal->debug = debug; 3035 } 3036 3037 int 3038 SSL_cache_hit(SSL *s) 3039 { 3040 return (s->internal->hit); 3041 } 3042 3043 int 3044 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3045 { 3046 return ctx->internal->min_version; 3047 } 3048 3049 int 3050 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3051 { 3052 return ssl_version_set_min(ctx->method, version, 3053 ctx->internal->max_version, &ctx->internal->min_version); 3054 } 3055 3056 int 3057 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3058 { 3059 return ctx->internal->max_version; 3060 } 3061 3062 int 3063 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3064 { 3065 return ssl_version_set_max(ctx->method, version, 3066 ctx->internal->min_version, &ctx->internal->max_version); 3067 } 3068 3069 int 3070 SSL_get_min_proto_version(SSL *ssl) 3071 { 3072 return ssl->internal->min_version; 3073 } 3074 3075 int 3076 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3077 { 3078 return ssl_version_set_min(ssl->method, version, 3079 ssl->internal->max_version, &ssl->internal->min_version); 3080 } 3081 int 3082 SSL_get_max_proto_version(SSL *ssl) 3083 { 3084 return ssl->internal->max_version; 3085 } 3086 3087 int 3088 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3089 { 3090 return ssl_version_set_max(ssl->method, version, 3091 ssl->internal->min_version, &ssl->internal->max_version); 3092 } 3093 3094 static int 3095 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3096 { 3097 SSL_CIPHER const *a = a_; 3098 SSL_CIPHER const *b = b_; 3099 return ssl_cipher_id_cmp(a, b); 3100 } 3101 3102 SSL_CIPHER * 3103 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3104 { 3105 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3106 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3107 } 3108