1 /* $OpenBSD: ssl_lib.c,v 1.124 2017/01/03 16:57:15 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" 159 160 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162 SSL3_ENC_METHOD ssl3_undef_enc_method = { 163 /* 164 * Evil casts, but these functions are only called if there's a 165 * library bug. 166 */ 167 .enc = (int (*)(SSL *, int))ssl_undefined_function, 168 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 169 .setup_key_block = ssl_undefined_function, 170 .generate_master_secret = (int (*)(SSL *, unsigned char *, 171 unsigned char *, int))ssl_undefined_function, 172 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 173 .final_finish_mac = (int (*)(SSL *, const char*, int, 174 unsigned char *))ssl_undefined_function, 175 .finish_mac_length = 0, 176 .cert_verify_mac = (int (*)(SSL *, int, 177 unsigned char *))ssl_undefined_function, 178 .client_finished_label = NULL, 179 .client_finished_label_len = 0, 180 .server_finished_label = NULL, 181 .server_finished_label_len = 0, 182 .alert_value = (int (*)(int))ssl_undefined_function, 183 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 184 const char *, size_t, const unsigned char *, size_t, 185 int use_context))ssl_undefined_function, 186 .enc_flags = 0, 187 }; 188 189 int 190 SSL_clear(SSL *s) 191 { 192 if (s->method == NULL) { 193 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 194 return (0); 195 } 196 197 if (ssl_clear_bad_session(s)) { 198 SSL_SESSION_free(s->session); 199 s->session = NULL; 200 } 201 202 s->error = 0; 203 s->hit = 0; 204 s->shutdown = 0; 205 206 if (s->renegotiate) { 207 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 208 return (0); 209 } 210 211 s->type = 0; 212 213 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 s->version = s->method->version; 216 s->client_version = s->version; 217 s->rwstate = SSL_NOTHING; 218 s->rstate = SSL_ST_READ_HEADER; 219 220 BUF_MEM_free(s->init_buf); 221 s->init_buf = NULL; 222 223 ssl_clear_cipher_ctx(s); 224 ssl_clear_hash_ctx(&s->read_hash); 225 ssl_clear_hash_ctx(&s->write_hash); 226 227 s->first_packet = 0; 228 229 /* 230 * Check to see if we were changed into a different method, if 231 * so, revert back if we are not doing session-id reuse. 232 */ 233 if (!s->in_handshake && (s->session == NULL) && 234 (s->method != s->ctx->method)) { 235 s->method->ssl_free(s); 236 s->method = s->ctx->method; 237 if (!s->method->ssl_new(s)) 238 return (0); 239 } else 240 s->method->ssl_clear(s); 241 242 return (1); 243 } 244 245 /* Used to change an SSL_CTXs default SSL method type */ 246 int 247 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 248 { 249 STACK_OF(SSL_CIPHER) *sk; 250 251 ctx->method = meth; 252 253 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 254 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 255 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 256 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 257 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 258 return (0); 259 } 260 return (1); 261 } 262 263 SSL * 264 SSL_new(SSL_CTX *ctx) 265 { 266 SSL *s; 267 268 if (ctx == NULL) { 269 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 270 return (NULL); 271 } 272 if (ctx->method == NULL) { 273 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 274 return (NULL); 275 } 276 277 s = calloc(1, sizeof(SSL)); 278 if (s == NULL) 279 goto err; 280 281 282 s->options = ctx->options; 283 s->mode = ctx->mode; 284 s->max_cert_list = ctx->max_cert_list; 285 286 if (ctx->cert != NULL) { 287 /* 288 * Earlier library versions used to copy the pointer to 289 * the CERT, not its contents; only when setting new 290 * parameters for the per-SSL copy, ssl_cert_new would be 291 * called (and the direct reference to the per-SSL_CTX 292 * settings would be lost, but those still were indirectly 293 * accessed for various purposes, and for that reason they 294 * used to be known as s->ctx->default_cert). 295 * Now we don't look at the SSL_CTX's CERT after having 296 * duplicated it once. 297 */ 298 s->cert = ssl_cert_dup(ctx->cert); 299 if (s->cert == NULL) 300 goto err; 301 } else 302 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 303 304 s->read_ahead = ctx->read_ahead; 305 s->msg_callback = ctx->msg_callback; 306 s->msg_callback_arg = ctx->msg_callback_arg; 307 s->verify_mode = ctx->verify_mode; 308 s->sid_ctx_length = ctx->sid_ctx_length; 309 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 310 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 311 s->verify_callback = ctx->default_verify_callback; 312 s->generate_session_id = ctx->generate_session_id; 313 314 s->param = X509_VERIFY_PARAM_new(); 315 if (!s->param) 316 goto err; 317 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 318 s->quiet_shutdown = ctx->quiet_shutdown; 319 s->max_send_fragment = ctx->max_send_fragment; 320 321 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 322 s->ctx = ctx; 323 s->tlsext_debug_cb = 0; 324 s->tlsext_debug_arg = NULL; 325 s->tlsext_ticket_expected = 0; 326 s->tlsext_status_type = -1; 327 s->tlsext_status_expected = 0; 328 s->tlsext_ocsp_ids = NULL; 329 s->tlsext_ocsp_exts = NULL; 330 s->tlsext_ocsp_resp = NULL; 331 s->tlsext_ocsp_resplen = -1; 332 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 333 s->initial_ctx = ctx; 334 s->next_proto_negotiated = NULL; 335 336 if (s->ctx->alpn_client_proto_list != NULL) { 337 s->alpn_client_proto_list = 338 malloc(s->ctx->alpn_client_proto_list_len); 339 if (s->alpn_client_proto_list == NULL) 340 goto err; 341 memcpy(s->alpn_client_proto_list, 342 s->ctx->alpn_client_proto_list, 343 s->ctx->alpn_client_proto_list_len); 344 s->alpn_client_proto_list_len = 345 s->ctx->alpn_client_proto_list_len; 346 } 347 348 s->verify_result = X509_V_OK; 349 350 s->method = ctx->method; 351 352 if (!s->method->ssl_new(s)) 353 goto err; 354 355 s->references = 1; 356 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 357 358 SSL_clear(s); 359 360 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 361 362 return (s); 363 364 err: 365 SSL_free(s); 366 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 367 return (NULL); 368 } 369 370 int 371 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 372 unsigned int sid_ctx_len) 373 { 374 if (sid_ctx_len > sizeof ctx->sid_ctx) { 375 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 376 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 377 return (0); 378 } 379 ctx->sid_ctx_length = sid_ctx_len; 380 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 381 382 return (1); 383 } 384 385 int 386 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 387 unsigned int sid_ctx_len) 388 { 389 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 390 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 391 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 392 return (0); 393 } 394 ssl->sid_ctx_length = sid_ctx_len; 395 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 396 397 return (1); 398 } 399 400 int 401 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 402 { 403 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 404 ctx->generate_session_id = cb; 405 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 406 return (1); 407 } 408 409 int 410 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 411 { 412 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 413 ssl->generate_session_id = cb; 414 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 415 return (1); 416 } 417 418 int 419 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 420 unsigned int id_len) 421 { 422 /* 423 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 424 * shows how we can "construct" a session to give us the desired 425 * check - ie. to find if there's a session in the hash table 426 * that would conflict with any new session built out of this 427 * id/id_len and the ssl_version in use by this SSL. 428 */ 429 SSL_SESSION r, *p; 430 431 if (id_len > sizeof r.session_id) 432 return (0); 433 434 r.ssl_version = ssl->version; 435 r.session_id_length = id_len; 436 memcpy(r.session_id, id, id_len); 437 438 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 439 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 440 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 441 return (p != NULL); 442 } 443 444 int 445 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 446 { 447 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 448 } 449 450 int 451 SSL_set_purpose(SSL *s, int purpose) 452 { 453 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 454 } 455 456 int 457 SSL_CTX_set_trust(SSL_CTX *s, int trust) 458 { 459 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 460 } 461 462 int 463 SSL_set_trust(SSL *s, int trust) 464 { 465 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 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 int 475 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 476 { 477 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 478 } 479 480 void 481 SSL_free(SSL *s) 482 { 483 int i; 484 485 if (s == NULL) 486 return; 487 488 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 489 if (i > 0) 490 return; 491 492 if (s->param) 493 X509_VERIFY_PARAM_free(s->param); 494 495 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 496 497 if (s->bbio != NULL) { 498 /* If the buffering BIO is in place, pop it off */ 499 if (s->bbio == s->wbio) { 500 s->wbio = BIO_pop(s->wbio); 501 } 502 BIO_free(s->bbio); 503 s->bbio = NULL; 504 } 505 506 if (s->rbio != s->wbio) 507 BIO_free_all(s->rbio); 508 BIO_free_all(s->wbio); 509 510 if (s->init_buf != NULL) 511 BUF_MEM_free(s->init_buf); 512 513 /* add extra stuff */ 514 if (s->cipher_list != NULL) 515 sk_SSL_CIPHER_free(s->cipher_list); 516 if (s->cipher_list_by_id != NULL) 517 sk_SSL_CIPHER_free(s->cipher_list_by_id); 518 519 /* Make the next call work :-) */ 520 if (s->session != NULL) { 521 ssl_clear_bad_session(s); 522 SSL_SESSION_free(s->session); 523 } 524 525 ssl_clear_cipher_ctx(s); 526 ssl_clear_hash_ctx(&s->read_hash); 527 ssl_clear_hash_ctx(&s->write_hash); 528 529 if (s->cert != NULL) 530 ssl_cert_free(s->cert); 531 /* Free up if allocated */ 532 533 free(s->tlsext_hostname); 534 SSL_CTX_free(s->initial_ctx); 535 free(s->tlsext_ecpointformatlist); 536 free(s->tlsext_ellipticcurvelist); 537 if (s->tlsext_ocsp_exts) 538 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 539 X509_EXTENSION_free); 540 if (s->tlsext_ocsp_ids) 541 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 542 free(s->tlsext_ocsp_resp); 543 544 if (s->client_CA != NULL) 545 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 546 547 if (s->method != NULL) 548 s->method->ssl_free(s); 549 550 SSL_CTX_free(s->ctx); 551 552 553 free(s->next_proto_negotiated); 554 free(s->alpn_client_proto_list); 555 556 #ifndef OPENSSL_NO_SRTP 557 if (s->srtp_profiles) 558 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 559 #endif 560 561 free(s); 562 } 563 564 void 565 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 566 { 567 /* If the output buffering BIO is still in place, remove it */ 568 if (s->bbio != NULL) { 569 if (s->wbio == s->bbio) { 570 s->wbio = s->wbio->next_bio; 571 s->bbio->next_bio = NULL; 572 } 573 } 574 575 if (s->rbio != rbio && s->rbio != s->wbio) 576 BIO_free_all(s->rbio); 577 if (s->wbio != wbio) 578 BIO_free_all(s->wbio); 579 s->rbio = rbio; 580 s->wbio = wbio; 581 } 582 583 BIO * 584 SSL_get_rbio(const SSL *s) 585 { 586 return (s->rbio); 587 } 588 589 BIO * 590 SSL_get_wbio(const SSL *s) 591 { 592 return (s->wbio); 593 } 594 595 int 596 SSL_get_fd(const SSL *s) 597 { 598 return (SSL_get_rfd(s)); 599 } 600 601 int 602 SSL_get_rfd(const SSL *s) 603 { 604 int ret = -1; 605 BIO *b, *r; 606 607 b = SSL_get_rbio(s); 608 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 609 if (r != NULL) 610 BIO_get_fd(r, &ret); 611 return (ret); 612 } 613 614 int 615 SSL_get_wfd(const SSL *s) 616 { 617 int ret = -1; 618 BIO *b, *r; 619 620 b = SSL_get_wbio(s); 621 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 622 if (r != NULL) 623 BIO_get_fd(r, &ret); 624 return (ret); 625 } 626 627 int 628 SSL_set_fd(SSL *s, int fd) 629 { 630 int ret = 0; 631 BIO *bio = NULL; 632 633 bio = BIO_new(BIO_s_socket()); 634 635 if (bio == NULL) { 636 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 637 goto err; 638 } 639 BIO_set_fd(bio, fd, BIO_NOCLOSE); 640 SSL_set_bio(s, bio, bio); 641 ret = 1; 642 err: 643 return (ret); 644 } 645 646 int 647 SSL_set_wfd(SSL *s, int fd) 648 { 649 int ret = 0; 650 BIO *bio = NULL; 651 652 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 653 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 654 bio = BIO_new(BIO_s_socket()); 655 656 if (bio == NULL) { 657 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 658 goto err; 659 } 660 BIO_set_fd(bio, fd, BIO_NOCLOSE); 661 SSL_set_bio(s, SSL_get_rbio(s), bio); 662 } else 663 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 664 ret = 1; 665 err: 666 return (ret); 667 } 668 669 int 670 SSL_set_rfd(SSL *s, int fd) 671 { 672 int ret = 0; 673 BIO *bio = NULL; 674 675 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 676 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 677 bio = BIO_new(BIO_s_socket()); 678 679 if (bio == NULL) { 680 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 681 goto err; 682 } 683 BIO_set_fd(bio, fd, BIO_NOCLOSE); 684 SSL_set_bio(s, bio, SSL_get_wbio(s)); 685 } else 686 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 687 ret = 1; 688 err: 689 return (ret); 690 } 691 692 693 /* return length of latest Finished message we sent, copy to 'buf' */ 694 size_t 695 SSL_get_finished(const SSL *s, void *buf, size_t count) 696 { 697 size_t ret = 0; 698 699 if (s->s3 != NULL) { 700 ret = s->s3->tmp.finish_md_len; 701 if (count > ret) 702 count = ret; 703 memcpy(buf, s->s3->tmp.finish_md, count); 704 } 705 return (ret); 706 } 707 708 /* return length of latest Finished message we expected, copy to 'buf' */ 709 size_t 710 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 711 { 712 size_t ret = 0; 713 714 if (s->s3 != NULL) { 715 ret = s->s3->tmp.peer_finish_md_len; 716 if (count > ret) 717 count = ret; 718 memcpy(buf, s->s3->tmp.peer_finish_md, count); 719 } 720 return (ret); 721 } 722 723 724 int 725 SSL_get_verify_mode(const SSL *s) 726 { 727 return (s->verify_mode); 728 } 729 730 int 731 SSL_get_verify_depth(const SSL *s) 732 { 733 return (X509_VERIFY_PARAM_get_depth(s->param)); 734 } 735 736 int 737 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 738 { 739 return (s->verify_callback); 740 } 741 742 int 743 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 744 { 745 return (ctx->verify_mode); 746 } 747 748 int 749 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 750 { 751 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 752 } 753 754 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 755 { 756 return (ctx->default_verify_callback); 757 } 758 759 void 760 SSL_set_verify(SSL *s, int mode, 761 int (*callback)(int ok, X509_STORE_CTX *ctx)) 762 { 763 s->verify_mode = mode; 764 if (callback != NULL) 765 s->verify_callback = callback; 766 } 767 768 void 769 SSL_set_verify_depth(SSL *s, int depth) 770 { 771 X509_VERIFY_PARAM_set_depth(s->param, depth); 772 } 773 774 void 775 SSL_set_read_ahead(SSL *s, int yes) 776 { 777 s->read_ahead = yes; 778 } 779 780 int 781 SSL_get_read_ahead(const SSL *s) 782 { 783 return (s->read_ahead); 784 } 785 786 int 787 SSL_pending(const SSL *s) 788 { 789 /* 790 * SSL_pending cannot work properly if read-ahead is enabled 791 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 792 * and it is impossible to fix since SSL_pending cannot report 793 * errors that may be observed while scanning the new data. 794 * (Note that SSL_pending() is often used as a boolean value, 795 * so we'd better not return -1.) 796 */ 797 return (s->method->ssl_pending(s)); 798 } 799 800 X509 * 801 SSL_get_peer_certificate(const SSL *s) 802 { 803 X509 *r; 804 805 if ((s == NULL) || (s->session == NULL)) 806 r = NULL; 807 else 808 r = s->session->peer; 809 810 if (r == NULL) 811 return (r); 812 813 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 814 815 return (r); 816 } 817 818 STACK_OF(X509) * 819 SSL_get_peer_cert_chain(const SSL *s) 820 { 821 STACK_OF(X509) *r; 822 823 if ((s == NULL) || (s->session == NULL) || 824 (s->session->sess_cert == NULL)) 825 r = NULL; 826 else 827 r = s->session->sess_cert->cert_chain; 828 829 /* 830 * If we are a client, cert_chain includes the peer's own 831 * certificate; 832 * if we are a server, it does not. 833 */ 834 return (r); 835 } 836 837 /* 838 * Now in theory, since the calling process own 't' it should be safe to 839 * modify. We need to be able to read f without being hassled 840 */ 841 void 842 SSL_copy_session_id(SSL *t, const SSL *f) 843 { 844 CERT *tmp; 845 846 /* Do we need to to SSL locking? */ 847 SSL_set_session(t, SSL_get_session(f)); 848 849 /* 850 * What if we are setup as SSLv2 but want to talk SSLv3 or 851 * vice-versa. 852 */ 853 if (t->method != f->method) { 854 t->method->ssl_free(t); /* cleanup current */ 855 t->method=f->method; /* change method */ 856 t->method->ssl_new(t); /* setup new */ 857 } 858 859 tmp = t->cert; 860 if (f->cert != NULL) { 861 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 862 t->cert = f->cert; 863 } else 864 t->cert = NULL; 865 if (tmp != NULL) 866 ssl_cert_free(tmp); 867 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 868 } 869 870 /* Fix this so it checks all the valid key/cert options */ 871 int 872 SSL_CTX_check_private_key(const SSL_CTX *ctx) 873 { 874 if ((ctx == NULL) || (ctx->cert == NULL) || 875 (ctx->cert->key->x509 == NULL)) { 876 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 877 SSL_R_NO_CERTIFICATE_ASSIGNED); 878 return (0); 879 } 880 if (ctx->cert->key->privatekey == NULL) { 881 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 882 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 883 return (0); 884 } 885 return (X509_check_private_key(ctx->cert->key->x509, 886 ctx->cert->key->privatekey)); 887 } 888 889 /* Fix this function so that it takes an optional type parameter */ 890 int 891 SSL_check_private_key(const SSL *ssl) 892 { 893 if (ssl == NULL) { 894 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 895 ERR_R_PASSED_NULL_PARAMETER); 896 return (0); 897 } 898 if (ssl->cert == NULL) { 899 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 900 SSL_R_NO_CERTIFICATE_ASSIGNED); 901 return (0); 902 } 903 if (ssl->cert->key->x509 == NULL) { 904 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 905 SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ssl->cert->key->privatekey == NULL) { 909 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 910 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 911 return (0); 912 } 913 return (X509_check_private_key(ssl->cert->key->x509, 914 ssl->cert->key->privatekey)); 915 } 916 917 int 918 SSL_accept(SSL *s) 919 { 920 if (s->handshake_func == NULL) 921 SSL_set_accept_state(s); /* Not properly initialized yet */ 922 923 return (s->method->ssl_accept(s)); 924 } 925 926 int 927 SSL_connect(SSL *s) 928 { 929 if (s->handshake_func == NULL) 930 SSL_set_connect_state(s); /* Not properly initialized yet */ 931 932 return (s->method->ssl_connect(s)); 933 } 934 935 long 936 SSL_get_default_timeout(const SSL *s) 937 { 938 return (s->method->get_timeout()); 939 } 940 941 int 942 SSL_read(SSL *s, void *buf, int num) 943 { 944 if (s->handshake_func == NULL) { 945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 946 return (-1); 947 } 948 949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 950 s->rwstate = SSL_NOTHING; 951 return (0); 952 } 953 return (s->method->ssl_read(s, buf, num)); 954 } 955 956 int 957 SSL_peek(SSL *s, void *buf, int num) 958 { 959 if (s->handshake_func == NULL) { 960 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 961 return (-1); 962 } 963 964 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 965 return (0); 966 } 967 return (s->method->ssl_peek(s, buf, num)); 968 } 969 970 int 971 SSL_write(SSL *s, const void *buf, int num) 972 { 973 if (s->handshake_func == NULL) { 974 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->shutdown & SSL_SENT_SHUTDOWN) { 979 s->rwstate = SSL_NOTHING; 980 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 981 return (-1); 982 } 983 return (s->method->ssl_write(s, buf, num)); 984 } 985 986 int 987 SSL_shutdown(SSL *s) 988 { 989 /* 990 * Note that this function behaves differently from what one might 991 * expect. Return values are 0 for no success (yet), 992 * 1 for success; but calling it once is usually not enough, 993 * even if blocking I/O is used (see ssl3_shutdown). 994 */ 995 996 if (s->handshake_func == NULL) { 997 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 998 return (-1); 999 } 1000 1001 if ((s != NULL) && !SSL_in_init(s)) 1002 return (s->method->ssl_shutdown(s)); 1003 else 1004 return (1); 1005 } 1006 1007 int 1008 SSL_renegotiate(SSL *s) 1009 { 1010 if (s->renegotiate == 0) 1011 s->renegotiate = 1; 1012 1013 s->new_session = 1; 1014 1015 return (s->method->ssl_renegotiate(s)); 1016 } 1017 1018 int 1019 SSL_renegotiate_abbreviated(SSL *s) 1020 { 1021 if (s->renegotiate == 0) 1022 s->renegotiate = 1; 1023 1024 s->new_session = 0; 1025 1026 return (s->method->ssl_renegotiate(s)); 1027 } 1028 1029 int 1030 SSL_renegotiate_pending(SSL *s) 1031 { 1032 /* 1033 * Becomes true when negotiation is requested; 1034 * false again once a handshake has finished. 1035 */ 1036 return (s->renegotiate != 0); 1037 } 1038 1039 long 1040 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1041 { 1042 long l; 1043 1044 switch (cmd) { 1045 case SSL_CTRL_GET_READ_AHEAD: 1046 return (s->read_ahead); 1047 case SSL_CTRL_SET_READ_AHEAD: 1048 l = s->read_ahead; 1049 s->read_ahead = larg; 1050 return (l); 1051 1052 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1053 s->msg_callback_arg = parg; 1054 return (1); 1055 1056 case SSL_CTRL_OPTIONS: 1057 return (s->options|=larg); 1058 case SSL_CTRL_CLEAR_OPTIONS: 1059 return (s->options&=~larg); 1060 case SSL_CTRL_MODE: 1061 return (s->mode|=larg); 1062 case SSL_CTRL_CLEAR_MODE: 1063 return (s->mode &=~larg); 1064 case SSL_CTRL_GET_MAX_CERT_LIST: 1065 return (s->max_cert_list); 1066 case SSL_CTRL_SET_MAX_CERT_LIST: 1067 l = s->max_cert_list; 1068 s->max_cert_list = larg; 1069 return (l); 1070 case SSL_CTRL_SET_MTU: 1071 #ifndef OPENSSL_NO_DTLS1 1072 if (larg < (long)dtls1_min_mtu()) 1073 return (0); 1074 #endif 1075 if (SSL_IS_DTLS(s)) { 1076 s->d1->mtu = larg; 1077 return (larg); 1078 } 1079 return (0); 1080 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1081 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1082 return (0); 1083 s->max_send_fragment = larg; 1084 return (1); 1085 case SSL_CTRL_GET_RI_SUPPORT: 1086 if (s->s3) 1087 return (s->s3->send_connection_binding); 1088 else return (0); 1089 default: 1090 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1091 } 1092 } 1093 1094 long 1095 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1096 { 1097 switch (cmd) { 1098 case SSL_CTRL_SET_MSG_CALLBACK: 1099 s->msg_callback = (void (*)(int write_p, int version, 1100 int content_type, const void *buf, size_t len, 1101 SSL *ssl, void *arg))(fp); 1102 return (1); 1103 1104 default: 1105 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1106 } 1107 } 1108 1109 struct lhash_st_SSL_SESSION * 1110 SSL_CTX_sessions(SSL_CTX *ctx) 1111 { 1112 return (ctx->sessions); 1113 } 1114 1115 long 1116 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1117 { 1118 long l; 1119 1120 switch (cmd) { 1121 case SSL_CTRL_GET_READ_AHEAD: 1122 return (ctx->read_ahead); 1123 case SSL_CTRL_SET_READ_AHEAD: 1124 l = ctx->read_ahead; 1125 ctx->read_ahead = larg; 1126 return (l); 1127 1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1129 ctx->msg_callback_arg = parg; 1130 return (1); 1131 1132 case SSL_CTRL_GET_MAX_CERT_LIST: 1133 return (ctx->max_cert_list); 1134 case SSL_CTRL_SET_MAX_CERT_LIST: 1135 l = ctx->max_cert_list; 1136 ctx->max_cert_list = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1140 l = ctx->session_cache_size; 1141 ctx->session_cache_size = larg; 1142 return (l); 1143 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1144 return (ctx->session_cache_size); 1145 case SSL_CTRL_SET_SESS_CACHE_MODE: 1146 l = ctx->session_cache_mode; 1147 ctx->session_cache_mode = larg; 1148 return (l); 1149 case SSL_CTRL_GET_SESS_CACHE_MODE: 1150 return (ctx->session_cache_mode); 1151 1152 case SSL_CTRL_SESS_NUMBER: 1153 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1154 case SSL_CTRL_SESS_CONNECT: 1155 return (ctx->stats.sess_connect); 1156 case SSL_CTRL_SESS_CONNECT_GOOD: 1157 return (ctx->stats.sess_connect_good); 1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1159 return (ctx->stats.sess_connect_renegotiate); 1160 case SSL_CTRL_SESS_ACCEPT: 1161 return (ctx->stats.sess_accept); 1162 case SSL_CTRL_SESS_ACCEPT_GOOD: 1163 return (ctx->stats.sess_accept_good); 1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1165 return (ctx->stats.sess_accept_renegotiate); 1166 case SSL_CTRL_SESS_HIT: 1167 return (ctx->stats.sess_hit); 1168 case SSL_CTRL_SESS_CB_HIT: 1169 return (ctx->stats.sess_cb_hit); 1170 case SSL_CTRL_SESS_MISSES: 1171 return (ctx->stats.sess_miss); 1172 case SSL_CTRL_SESS_TIMEOUTS: 1173 return (ctx->stats.sess_timeout); 1174 case SSL_CTRL_SESS_CACHE_FULL: 1175 return (ctx->stats.sess_cache_full); 1176 case SSL_CTRL_OPTIONS: 1177 return (ctx->options|=larg); 1178 case SSL_CTRL_CLEAR_OPTIONS: 1179 return (ctx->options&=~larg); 1180 case SSL_CTRL_MODE: 1181 return (ctx->mode|=larg); 1182 case SSL_CTRL_CLEAR_MODE: 1183 return (ctx->mode&=~larg); 1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1186 return (0); 1187 ctx->max_send_fragment = larg; 1188 return (1); 1189 default: 1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1191 } 1192 } 1193 1194 long 1195 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1196 { 1197 switch (cmd) { 1198 case SSL_CTRL_SET_MSG_CALLBACK: 1199 ctx->msg_callback = (void (*)(int write_p, int version, 1200 int content_type, const void *buf, size_t len, SSL *ssl, 1201 void *arg))(fp); 1202 return (1); 1203 1204 default: 1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1206 } 1207 } 1208 1209 int 1210 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1211 { 1212 long l; 1213 1214 l = a->id - b->id; 1215 if (l == 0L) 1216 return (0); 1217 else 1218 return ((l > 0) ? 1:-1); 1219 } 1220 1221 int 1222 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1223 const SSL_CIPHER * const *bp) 1224 { 1225 long l; 1226 1227 l = (*ap)->id - (*bp)->id; 1228 if (l == 0L) 1229 return (0); 1230 else 1231 return ((l > 0) ? 1:-1); 1232 } 1233 1234 /* 1235 * Return a STACK of the ciphers available for the SSL and in order of 1236 * preference. 1237 */ 1238 STACK_OF(SSL_CIPHER) * 1239 SSL_get_ciphers(const SSL *s) 1240 { 1241 if (s != NULL) { 1242 if (s->cipher_list != NULL) { 1243 return (s->cipher_list); 1244 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1245 return (s->ctx->cipher_list); 1246 } 1247 } 1248 return (NULL); 1249 } 1250 1251 /* 1252 * Return a STACK of the ciphers available for the SSL and in order of 1253 * algorithm id. 1254 */ 1255 STACK_OF(SSL_CIPHER) * 1256 ssl_get_ciphers_by_id(SSL *s) 1257 { 1258 if (s != NULL) { 1259 if (s->cipher_list_by_id != NULL) { 1260 return (s->cipher_list_by_id); 1261 } else if ((s->ctx != NULL) && 1262 (s->ctx->cipher_list_by_id != NULL)) { 1263 return (s->ctx->cipher_list_by_id); 1264 } 1265 } 1266 return (NULL); 1267 } 1268 1269 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1270 const char * 1271 SSL_get_cipher_list(const SSL *s, int n) 1272 { 1273 SSL_CIPHER *c; 1274 STACK_OF(SSL_CIPHER) *sk; 1275 1276 if (s == NULL) 1277 return (NULL); 1278 sk = SSL_get_ciphers(s); 1279 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1280 return (NULL); 1281 c = sk_SSL_CIPHER_value(sk, n); 1282 if (c == NULL) 1283 return (NULL); 1284 return (c->name); 1285 } 1286 1287 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1288 int 1289 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1290 { 1291 STACK_OF(SSL_CIPHER) *sk; 1292 1293 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1294 &ctx->cipher_list_by_id, str); 1295 /* 1296 * ssl_create_cipher_list may return an empty stack if it 1297 * was unable to find a cipher matching the given rule string 1298 * (for example if the rule string specifies a cipher which 1299 * has been disabled). This is not an error as far as 1300 * ssl_create_cipher_list is concerned, and hence 1301 * ctx->cipher_list and ctx->cipher_list_by_id has been 1302 * updated. 1303 */ 1304 if (sk == NULL) 1305 return (0); 1306 else if (sk_SSL_CIPHER_num(sk) == 0) { 1307 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1308 return (0); 1309 } 1310 return (1); 1311 } 1312 1313 /* Specify the ciphers to be used by the SSL. */ 1314 int 1315 SSL_set_cipher_list(SSL *s, const char *str) 1316 { 1317 STACK_OF(SSL_CIPHER) *sk; 1318 1319 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1320 &s->cipher_list_by_id, str); 1321 /* see comment in SSL_CTX_set_cipher_list */ 1322 if (sk == NULL) 1323 return (0); 1324 else if (sk_SSL_CIPHER_num(sk) == 0) { 1325 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1326 return (0); 1327 } 1328 return (1); 1329 } 1330 1331 /* works well for SSLv2, not so good for SSLv3 */ 1332 char * 1333 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1334 { 1335 char *end; 1336 STACK_OF(SSL_CIPHER) *sk; 1337 SSL_CIPHER *c; 1338 size_t curlen = 0; 1339 int i; 1340 1341 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1342 return (NULL); 1343 1344 sk = s->session->ciphers; 1345 if (sk_SSL_CIPHER_num(sk) == 0) 1346 return (NULL); 1347 1348 buf[0] = '\0'; 1349 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1350 c = sk_SSL_CIPHER_value(sk, i); 1351 end = buf + curlen; 1352 if (strlcat(buf, c->name, len) >= len || 1353 (curlen = strlcat(buf, ":", len)) >= len) { 1354 /* remove truncated cipher from list */ 1355 *end = '\0'; 1356 break; 1357 } 1358 } 1359 /* remove trailing colon */ 1360 if ((end = strrchr(buf, ':')) != NULL) 1361 *end = '\0'; 1362 return (buf); 1363 } 1364 1365 int 1366 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1367 size_t maxlen, size_t *outlen) 1368 { 1369 SSL_CIPHER *cipher; 1370 int ciphers = 0; 1371 CBB cbb; 1372 int i; 1373 1374 *outlen = 0; 1375 1376 if (sk == NULL) 1377 return (0); 1378 1379 if (!CBB_init_fixed(&cbb, p, maxlen)) 1380 goto err; 1381 1382 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1383 cipher = sk_SSL_CIPHER_value(sk, i); 1384 1385 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1386 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1387 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1388 continue; 1389 1390 if (!CBB_add_u16(&cbb, ssl3_cipher_get_value(cipher))) 1391 goto err; 1392 1393 ciphers++; 1394 } 1395 1396 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1397 if (ciphers > 0 && !s->renegotiate) { 1398 if (!CBB_add_u16(&cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1399 goto err; 1400 } 1401 1402 if (!CBB_finish(&cbb, NULL, outlen)) 1403 goto err; 1404 1405 return 1; 1406 1407 err: 1408 CBB_cleanup(&cbb); 1409 1410 return 0; 1411 } 1412 1413 STACK_OF(SSL_CIPHER) * 1414 ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1415 { 1416 CBS cbs; 1417 const SSL_CIPHER *c; 1418 STACK_OF(SSL_CIPHER) *sk = NULL; 1419 unsigned long cipher_id; 1420 uint16_t cipher_value, max_version; 1421 1422 if (s->s3) 1423 s->s3->send_connection_binding = 0; 1424 1425 /* 1426 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1427 */ 1428 if (num < 2 || num > 0x10000 - 2) { 1429 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1430 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1431 return (NULL); 1432 } 1433 1434 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1435 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1436 goto err; 1437 } 1438 1439 CBS_init(&cbs, p, num); 1440 while (CBS_len(&cbs) > 0) { 1441 if (!CBS_get_u16(&cbs, &cipher_value)) { 1442 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1443 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1444 goto err; 1445 } 1446 1447 cipher_id = SSL3_CK_ID | cipher_value; 1448 1449 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1450 /* 1451 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1452 * renegotiating. 1453 */ 1454 if (s->renegotiate) { 1455 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1456 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1457 ssl3_send_alert(s, SSL3_AL_FATAL, 1458 SSL_AD_HANDSHAKE_FAILURE); 1459 1460 goto err; 1461 } 1462 s->s3->send_connection_binding = 1; 1463 continue; 1464 } 1465 1466 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1467 /* 1468 * TLS_FALLBACK_SCSV indicates that the client 1469 * previously tried a higher protocol version. 1470 * Fail if the current version is an unexpected 1471 * downgrade. 1472 */ 1473 max_version = ssl_max_server_version(s); 1474 if (max_version == 0 || s->version < max_version) { 1475 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1476 SSL_R_INAPPROPRIATE_FALLBACK); 1477 if (s->s3 != NULL) 1478 ssl3_send_alert(s, SSL3_AL_FATAL, 1479 SSL_AD_INAPPROPRIATE_FALLBACK); 1480 goto err; 1481 } 1482 continue; 1483 } 1484 1485 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1486 if (!sk_SSL_CIPHER_push(sk, c)) { 1487 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1488 ERR_R_MALLOC_FAILURE); 1489 goto err; 1490 } 1491 } 1492 } 1493 1494 return (sk); 1495 1496 err: 1497 sk_SSL_CIPHER_free(sk); 1498 1499 return (NULL); 1500 } 1501 1502 1503 /* 1504 * Return a servername extension value if provided in Client Hello, or NULL. 1505 * So far, only host_name types are defined (RFC 3546). 1506 */ 1507 const char * 1508 SSL_get_servername(const SSL *s, const int type) 1509 { 1510 if (type != TLSEXT_NAMETYPE_host_name) 1511 return (NULL); 1512 1513 return (s->session && !s->tlsext_hostname ? 1514 s->session->tlsext_hostname : 1515 s->tlsext_hostname); 1516 } 1517 1518 int 1519 SSL_get_servername_type(const SSL *s) 1520 { 1521 if (s->session && 1522 (!s->tlsext_hostname ? 1523 s->session->tlsext_hostname : s->tlsext_hostname)) 1524 return (TLSEXT_NAMETYPE_host_name); 1525 return (-1); 1526 } 1527 1528 /* 1529 * SSL_select_next_proto implements the standard protocol selection. It is 1530 * expected that this function is called from the callback set by 1531 * SSL_CTX_set_next_proto_select_cb. 1532 * 1533 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1534 * strings. The length byte itself is not included in the length. A byte 1535 * string of length 0 is invalid. No byte string may be truncated. 1536 * 1537 * The current, but experimental algorithm for selecting the protocol is: 1538 * 1539 * 1) If the server doesn't support NPN then this is indicated to the 1540 * callback. In this case, the client application has to abort the connection 1541 * or have a default application level protocol. 1542 * 1543 * 2) If the server supports NPN, but advertises an empty list then the 1544 * client selects the first protcol in its list, but indicates via the 1545 * API that this fallback case was enacted. 1546 * 1547 * 3) Otherwise, the client finds the first protocol in the server's list 1548 * that it supports and selects this protocol. This is because it's 1549 * assumed that the server has better information about which protocol 1550 * a client should use. 1551 * 1552 * 4) If the client doesn't support any of the server's advertised 1553 * protocols, then this is treated the same as case 2. 1554 * 1555 * It returns either 1556 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1557 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1558 */ 1559 int 1560 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1561 const unsigned char *server, unsigned int server_len, 1562 const unsigned char *client, unsigned int client_len) 1563 { 1564 unsigned int i, j; 1565 const unsigned char *result; 1566 int status = OPENSSL_NPN_UNSUPPORTED; 1567 1568 /* 1569 * For each protocol in server preference order, 1570 * see if we support it. 1571 */ 1572 for (i = 0; i < server_len; ) { 1573 for (j = 0; j < client_len; ) { 1574 if (server[i] == client[j] && 1575 memcmp(&server[i + 1], 1576 &client[j + 1], server[i]) == 0) { 1577 /* We found a match */ 1578 result = &server[i]; 1579 status = OPENSSL_NPN_NEGOTIATED; 1580 goto found; 1581 } 1582 j += client[j]; 1583 j++; 1584 } 1585 i += server[i]; 1586 i++; 1587 } 1588 1589 /* There's no overlap between our protocols and the server's list. */ 1590 result = client; 1591 status = OPENSSL_NPN_NO_OVERLAP; 1592 1593 found: 1594 *out = (unsigned char *) result + 1; 1595 *outlen = result[0]; 1596 return (status); 1597 } 1598 1599 /* 1600 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1601 * requested protocol for this connection and returns 0. If the client didn't 1602 * request any protocol, then *data is set to NULL. 1603 * 1604 * Note that the client can request any protocol it chooses. The value returned 1605 * from this function need not be a member of the list of supported protocols 1606 * provided by the callback. 1607 */ 1608 void 1609 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1610 unsigned *len) 1611 { 1612 *data = s->next_proto_negotiated; 1613 if (!*data) { 1614 *len = 0; 1615 } else { 1616 *len = s->next_proto_negotiated_len; 1617 } 1618 } 1619 1620 /* 1621 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1622 * TLS server needs a list of supported protocols for Next Protocol 1623 * Negotiation. The returned list must be in wire format. The list is returned 1624 * by setting |out| to point to it and |outlen| to its length. This memory will 1625 * not be modified, but one should assume that the SSL* keeps a reference to 1626 * it. 1627 * 1628 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1629 * Otherwise, no such extension will be included in the ServerHello. 1630 */ 1631 void 1632 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1633 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1634 { 1635 ctx->next_protos_advertised_cb = cb; 1636 ctx->next_protos_advertised_cb_arg = arg; 1637 } 1638 1639 /* 1640 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1641 * client needs to select a protocol from the server's provided list. |out| 1642 * must be set to point to the selected protocol (which may be within |in|). 1643 * The length of the protocol name must be written into |outlen|. The server's 1644 * advertised protocols are provided in |in| and |inlen|. The callback can 1645 * assume that |in| is syntactically valid. 1646 * 1647 * The client must select a protocol. It is fatal to the connection if this 1648 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1649 */ 1650 void 1651 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1652 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1653 unsigned int inlen, void *arg), void *arg) 1654 { 1655 ctx->next_proto_select_cb = cb; 1656 ctx->next_proto_select_cb_arg = arg; 1657 } 1658 1659 /* 1660 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1661 * protocols, which must be in wire-format (i.e. a series of non-empty, 1662 * 8-bit length-prefixed strings). Returns 0 on success. 1663 */ 1664 int 1665 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1666 unsigned int protos_len) 1667 { 1668 free(ctx->alpn_client_proto_list); 1669 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1670 return (1); 1671 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1672 ctx->alpn_client_proto_list_len = protos_len; 1673 1674 return (0); 1675 } 1676 1677 /* 1678 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1679 * protocols, which must be in wire-format (i.e. a series of non-empty, 1680 * 8-bit length-prefixed strings). Returns 0 on success. 1681 */ 1682 int 1683 SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1684 unsigned int protos_len) 1685 { 1686 free(ssl->alpn_client_proto_list); 1687 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1688 return (1); 1689 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1690 ssl->alpn_client_proto_list_len = protos_len; 1691 1692 return (0); 1693 } 1694 1695 /* 1696 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1697 * ClientHello processing in order to select an ALPN protocol from the 1698 * client's list of offered protocols. 1699 */ 1700 void 1701 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1702 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1703 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1704 { 1705 ctx->alpn_select_cb = cb; 1706 ctx->alpn_select_cb_arg = arg; 1707 } 1708 1709 /* 1710 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1711 * it sets data to point to len bytes of protocol name (not including the 1712 * leading length-prefix byte). If the server didn't respond with* a negotiated 1713 * protocol then len will be zero. 1714 */ 1715 void 1716 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1717 unsigned *len) 1718 { 1719 *data = NULL; 1720 *len = 0; 1721 1722 if (ssl->s3 != NULL) { 1723 *data = ssl->s3->alpn_selected; 1724 *len = ssl->s3->alpn_selected_len; 1725 } 1726 } 1727 1728 int 1729 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1730 const char *label, size_t llen, const unsigned char *p, size_t plen, 1731 int use_context) 1732 { 1733 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1734 label, llen, p, plen, use_context)); 1735 } 1736 1737 static unsigned long 1738 ssl_session_hash(const SSL_SESSION *a) 1739 { 1740 unsigned long l; 1741 1742 l = (unsigned long) 1743 ((unsigned int) a->session_id[0] )| 1744 ((unsigned int) a->session_id[1]<< 8L)| 1745 ((unsigned long)a->session_id[2]<<16L)| 1746 ((unsigned long)a->session_id[3]<<24L); 1747 return (l); 1748 } 1749 1750 /* 1751 * NB: If this function (or indeed the hash function which uses a sort of 1752 * coarser function than this one) is changed, ensure 1753 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1754 * able to construct an SSL_SESSION that will collide with any existing session 1755 * with a matching session ID. 1756 */ 1757 static int 1758 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1759 { 1760 if (a->ssl_version != b->ssl_version) 1761 return (1); 1762 if (a->session_id_length != b->session_id_length) 1763 return (1); 1764 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1765 return (1); 1766 return (0); 1767 } 1768 1769 /* 1770 * These wrapper functions should remain rather than redeclaring 1771 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1772 * variable. The reason is that the functions aren't static, they're exposed via 1773 * ssl.h. 1774 */ 1775 static unsigned long 1776 ssl_session_LHASH_HASH(const void *arg) 1777 { 1778 const SSL_SESSION *a = arg; 1779 1780 return ssl_session_hash(a); 1781 } 1782 1783 static int 1784 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1785 { 1786 const SSL_SESSION *a = arg1; 1787 const SSL_SESSION *b = arg2; 1788 1789 return ssl_session_cmp(a, b); 1790 } 1791 1792 SSL_CTX * 1793 SSL_CTX_new(const SSL_METHOD *meth) 1794 { 1795 SSL_CTX *ret = NULL; 1796 1797 if (meth == NULL) { 1798 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1799 return (NULL); 1800 } 1801 1802 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1803 SSLerr(SSL_F_SSL_CTX_NEW, 1804 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1805 goto err; 1806 } 1807 ret = calloc(1, sizeof(SSL_CTX)); 1808 if (ret == NULL) 1809 goto err; 1810 1811 ret->method = meth; 1812 1813 ret->cert_store = NULL; 1814 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1815 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1816 ret->session_cache_head = NULL; 1817 ret->session_cache_tail = NULL; 1818 1819 /* We take the system default */ 1820 ret->session_timeout = meth->get_timeout(); 1821 1822 ret->new_session_cb = 0; 1823 ret->remove_session_cb = 0; 1824 ret->get_session_cb = 0; 1825 ret->generate_session_id = 0; 1826 1827 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1828 1829 ret->references = 1; 1830 ret->quiet_shutdown = 0; 1831 1832 ret->info_callback = NULL; 1833 1834 ret->app_verify_callback = 0; 1835 ret->app_verify_arg = NULL; 1836 1837 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1838 ret->read_ahead = 0; 1839 ret->msg_callback = 0; 1840 ret->msg_callback_arg = NULL; 1841 ret->verify_mode = SSL_VERIFY_NONE; 1842 ret->sid_ctx_length = 0; 1843 ret->default_verify_callback = NULL; 1844 if ((ret->cert = ssl_cert_new()) == NULL) 1845 goto err; 1846 1847 ret->default_passwd_callback = 0; 1848 ret->default_passwd_callback_userdata = NULL; 1849 ret->client_cert_cb = 0; 1850 ret->app_gen_cookie_cb = 0; 1851 ret->app_verify_cookie_cb = 0; 1852 1853 ret->sessions = lh_SSL_SESSION_new(); 1854 if (ret->sessions == NULL) 1855 goto err; 1856 ret->cert_store = X509_STORE_new(); 1857 if (ret->cert_store == NULL) 1858 goto err; 1859 1860 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1861 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1862 if (ret->cipher_list == NULL || 1863 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1864 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1865 goto err2; 1866 } 1867 1868 ret->param = X509_VERIFY_PARAM_new(); 1869 if (!ret->param) 1870 goto err; 1871 1872 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1873 SSLerr(SSL_F_SSL_CTX_NEW, 1874 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1875 goto err2; 1876 } 1877 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1878 SSLerr(SSL_F_SSL_CTX_NEW, 1879 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1880 goto err2; 1881 } 1882 1883 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1884 goto err; 1885 1886 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1887 1888 ret->extra_certs = NULL; 1889 1890 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1891 1892 ret->tlsext_servername_callback = 0; 1893 ret->tlsext_servername_arg = NULL; 1894 1895 /* Setup RFC4507 ticket keys */ 1896 arc4random_buf(ret->tlsext_tick_key_name, 16); 1897 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1898 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1899 1900 ret->tlsext_status_cb = 0; 1901 ret->tlsext_status_arg = NULL; 1902 1903 ret->next_protos_advertised_cb = 0; 1904 ret->next_proto_select_cb = 0; 1905 #ifndef OPENSSL_NO_ENGINE 1906 ret->client_cert_engine = NULL; 1907 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1908 #define eng_strx(x) #x 1909 #define eng_str(x) eng_strx(x) 1910 /* Use specific client engine automatically... ignore errors */ 1911 { 1912 ENGINE *eng; 1913 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1914 if (!eng) { 1915 ERR_clear_error(); 1916 ENGINE_load_builtin_engines(); 1917 eng = ENGINE_by_id(eng_str( 1918 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1919 } 1920 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1921 ERR_clear_error(); 1922 } 1923 #endif 1924 #endif 1925 /* 1926 * Default is to connect to non-RI servers. When RI is more widely 1927 * deployed might change this. 1928 */ 1929 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1930 1931 return (ret); 1932 err: 1933 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1934 err2: 1935 SSL_CTX_free(ret); 1936 return (NULL); 1937 } 1938 1939 void 1940 SSL_CTX_free(SSL_CTX *a) 1941 { 1942 int i; 1943 1944 if (a == NULL) 1945 return; 1946 1947 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1948 if (i > 0) 1949 return; 1950 1951 if (a->param) 1952 X509_VERIFY_PARAM_free(a->param); 1953 1954 /* 1955 * Free internal session cache. However: the remove_cb() may reference 1956 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1957 * after the sessions were flushed. 1958 * As the ex_data handling routines might also touch the session cache, 1959 * the most secure solution seems to be: empty (flush) the cache, then 1960 * free ex_data, then finally free the cache. 1961 * (See ticket [openssl.org #212].) 1962 */ 1963 if (a->sessions != NULL) 1964 SSL_CTX_flush_sessions(a, 0); 1965 1966 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1967 1968 if (a->sessions != NULL) 1969 lh_SSL_SESSION_free(a->sessions); 1970 1971 if (a->cert_store != NULL) 1972 X509_STORE_free(a->cert_store); 1973 if (a->cipher_list != NULL) 1974 sk_SSL_CIPHER_free(a->cipher_list); 1975 if (a->cipher_list_by_id != NULL) 1976 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1977 if (a->cert != NULL) 1978 ssl_cert_free(a->cert); 1979 if (a->client_CA != NULL) 1980 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1981 if (a->extra_certs != NULL) 1982 sk_X509_pop_free(a->extra_certs, X509_free); 1983 1984 #ifndef OPENSSL_NO_SRTP 1985 if (a->srtp_profiles) 1986 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1987 #endif 1988 1989 #ifndef OPENSSL_NO_ENGINE 1990 if (a->client_cert_engine) 1991 ENGINE_finish(a->client_cert_engine); 1992 #endif 1993 1994 free(a->alpn_client_proto_list); 1995 1996 free(a); 1997 } 1998 1999 void 2000 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2001 { 2002 ctx->default_passwd_callback = cb; 2003 } 2004 2005 void 2006 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2007 { 2008 ctx->default_passwd_callback_userdata = u; 2009 } 2010 2011 void 2012 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2013 void *), void *arg) 2014 { 2015 ctx->app_verify_callback = cb; 2016 ctx->app_verify_arg = arg; 2017 } 2018 2019 void 2020 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2021 { 2022 ctx->verify_mode = mode; 2023 ctx->default_verify_callback = cb; 2024 } 2025 2026 void 2027 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2028 { 2029 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2030 } 2031 2032 void 2033 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2034 { 2035 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2036 int have_ecc_cert, have_ecdh_tmp; 2037 unsigned long mask_k, mask_a; 2038 X509 *x = NULL; 2039 CERT_PKEY *cpk; 2040 2041 if (c == NULL) 2042 return; 2043 2044 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2045 c->dh_tmp_auto != 0); 2046 2047 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2048 c->ecdh_tmp_auto != 0); 2049 2050 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2051 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2052 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2053 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2054 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2055 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2056 /* FIX THIS EAY EAY EAY */ 2057 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2058 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2059 mask_k = 0; 2060 mask_a = 0; 2061 2062 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2063 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2064 mask_k |= SSL_kGOST; 2065 mask_a |= SSL_aGOST01; 2066 } 2067 2068 if (rsa_enc) 2069 mask_k|=SSL_kRSA; 2070 2071 if (dh_tmp) 2072 mask_k|=SSL_kDHE; 2073 2074 if (rsa_enc || rsa_sign) 2075 mask_a|=SSL_aRSA; 2076 2077 if (dsa_sign) 2078 mask_a|=SSL_aDSS; 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 if (have_ecdh_tmp) 2099 mask_k|=SSL_kECDHE; 2100 2101 c->mask_k = mask_k; 2102 c->mask_a = mask_a; 2103 c->valid = 1; 2104 } 2105 2106 int 2107 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2108 { 2109 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2110 unsigned long alg_a; 2111 2112 alg_a = cs->algorithm_auth; 2113 2114 if (alg_a & SSL_aECDSA) { 2115 /* This call populates extension flags (ex_flags). */ 2116 X509_check_purpose(x, -1, 0); 2117 2118 /* Key usage, if present, must allow signing. */ 2119 if ((x->ex_flags & EXFLAG_KUSAGE) && 2120 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2121 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2122 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2123 return (0); 2124 } 2125 } 2126 2127 return (1); 2128 } 2129 2130 CERT_PKEY * 2131 ssl_get_server_send_pkey(const SSL *s) 2132 { 2133 unsigned long alg_a; 2134 CERT *c; 2135 int i; 2136 2137 c = s->cert; 2138 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2139 2140 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2141 2142 if (alg_a & SSL_aECDSA) { 2143 i = SSL_PKEY_ECC; 2144 } else if (alg_a & SSL_aDSS) { 2145 i = SSL_PKEY_DSA_SIGN; 2146 } else if (alg_a & SSL_aRSA) { 2147 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2148 i = SSL_PKEY_RSA_SIGN; 2149 else 2150 i = SSL_PKEY_RSA_ENC; 2151 } else if (alg_a & SSL_aGOST01) { 2152 i = SSL_PKEY_GOST01; 2153 } else { /* if (alg_a & SSL_aNULL) */ 2154 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2155 return (NULL); 2156 } 2157 2158 return (c->pkeys + i); 2159 } 2160 2161 X509 * 2162 ssl_get_server_send_cert(const SSL *s) 2163 { 2164 CERT_PKEY *cpk; 2165 2166 cpk = ssl_get_server_send_pkey(s); 2167 if (!cpk) 2168 return (NULL); 2169 return (cpk->x509); 2170 } 2171 2172 EVP_PKEY * 2173 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2174 { 2175 unsigned long alg_a; 2176 CERT *c; 2177 int idx = -1; 2178 2179 alg_a = cipher->algorithm_auth; 2180 c = s->cert; 2181 2182 if ((alg_a & SSL_aDSS) && 2183 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2184 idx = SSL_PKEY_DSA_SIGN; 2185 else if (alg_a & SSL_aRSA) { 2186 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2187 idx = SSL_PKEY_RSA_SIGN; 2188 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2189 idx = SSL_PKEY_RSA_ENC; 2190 } else if ((alg_a & SSL_aECDSA) && 2191 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2192 idx = SSL_PKEY_ECC; 2193 if (idx == -1) { 2194 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2195 return (NULL); 2196 } 2197 if (pmd) 2198 *pmd = c->pkeys[idx].digest; 2199 return (c->pkeys[idx].privatekey); 2200 } 2201 2202 DH * 2203 ssl_get_auto_dh(SSL *s) 2204 { 2205 CERT_PKEY *cpk; 2206 int keylen; 2207 DH *dhp; 2208 2209 if (s->cert->dh_tmp_auto == 2) { 2210 keylen = 1024; 2211 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2212 keylen = 1024; 2213 if (s->s3->tmp.new_cipher->strength_bits == 256) 2214 keylen = 3072; 2215 } else { 2216 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2217 return (NULL); 2218 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2219 return (NULL); 2220 keylen = EVP_PKEY_bits(cpk->privatekey); 2221 } 2222 2223 if ((dhp = DH_new()) == NULL) 2224 return (NULL); 2225 2226 dhp->g = BN_new(); 2227 if (dhp->g != NULL) 2228 BN_set_word(dhp->g, 2); 2229 2230 if (keylen >= 8192) 2231 dhp->p = get_rfc3526_prime_8192(NULL); 2232 else if (keylen >= 4096) 2233 dhp->p = get_rfc3526_prime_4096(NULL); 2234 else if (keylen >= 3072) 2235 dhp->p = get_rfc3526_prime_3072(NULL); 2236 else if (keylen >= 2048) 2237 dhp->p = get_rfc3526_prime_2048(NULL); 2238 else if (keylen >= 1536) 2239 dhp->p = get_rfc3526_prime_1536(NULL); 2240 else 2241 dhp->p = get_rfc2409_prime_1024(NULL); 2242 2243 if (dhp->p == NULL || dhp->g == NULL) { 2244 DH_free(dhp); 2245 return (NULL); 2246 } 2247 return (dhp); 2248 } 2249 2250 void 2251 ssl_update_cache(SSL *s, int mode) 2252 { 2253 int i; 2254 2255 /* 2256 * If the session_id_length is 0, we are not supposed to cache it, 2257 * and it would be rather hard to do anyway :-) 2258 */ 2259 if (s->session->session_id_length == 0) 2260 return; 2261 2262 i = s->session_ctx->session_cache_mode; 2263 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2264 || SSL_CTX_add_session(s->session_ctx, s->session)) 2265 && (s->session_ctx->new_session_cb != NULL)) { 2266 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2267 if (!s->session_ctx->new_session_cb(s, s->session)) 2268 SSL_SESSION_free(s->session); 2269 } 2270 2271 /* auto flush every 255 connections */ 2272 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2273 ((i & mode) == mode)) { 2274 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2275 s->session_ctx->stats.sess_connect_good : 2276 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2277 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2278 } 2279 } 2280 } 2281 2282 const SSL_METHOD * 2283 SSL_get_ssl_method(SSL *s) 2284 { 2285 return (s->method); 2286 } 2287 2288 int 2289 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2290 { 2291 int conn = -1; 2292 int ret = 1; 2293 2294 if (s->method != meth) { 2295 if (s->handshake_func != NULL) 2296 conn = (s->handshake_func == s->method->ssl_connect); 2297 2298 if (s->method->version == meth->version) 2299 s->method = meth; 2300 else { 2301 s->method->ssl_free(s); 2302 s->method = meth; 2303 ret = s->method->ssl_new(s); 2304 } 2305 2306 if (conn == 1) 2307 s->handshake_func = meth->ssl_connect; 2308 else if (conn == 0) 2309 s->handshake_func = meth->ssl_accept; 2310 } 2311 return (ret); 2312 } 2313 2314 int 2315 SSL_get_error(const SSL *s, int i) 2316 { 2317 int reason; 2318 unsigned long l; 2319 BIO *bio; 2320 2321 if (i > 0) 2322 return (SSL_ERROR_NONE); 2323 2324 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2325 * etc, where we do encode the error */ 2326 if ((l = ERR_peek_error()) != 0) { 2327 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2328 return (SSL_ERROR_SYSCALL); 2329 else 2330 return (SSL_ERROR_SSL); 2331 } 2332 2333 if ((i < 0) && SSL_want_read(s)) { 2334 bio = SSL_get_rbio(s); 2335 if (BIO_should_read(bio)) { 2336 return (SSL_ERROR_WANT_READ); 2337 } else if (BIO_should_write(bio)) { 2338 /* 2339 * This one doesn't make too much sense... We never 2340 * try to write to the rbio, and an application 2341 * program where rbio and wbio are separate couldn't 2342 * even know what it should wait for. However if we 2343 * ever set s->rwstate incorrectly (so that we have 2344 * SSL_want_read(s) instead of SSL_want_write(s)) 2345 * and rbio and wbio *are* the same, this test works 2346 * around that bug; so it might be safer to keep it. 2347 */ 2348 return (SSL_ERROR_WANT_WRITE); 2349 } else if (BIO_should_io_special(bio)) { 2350 reason = BIO_get_retry_reason(bio); 2351 if (reason == BIO_RR_CONNECT) 2352 return (SSL_ERROR_WANT_CONNECT); 2353 else if (reason == BIO_RR_ACCEPT) 2354 return (SSL_ERROR_WANT_ACCEPT); 2355 else 2356 return (SSL_ERROR_SYSCALL); /* unknown */ 2357 } 2358 } 2359 2360 if ((i < 0) && SSL_want_write(s)) { 2361 bio = SSL_get_wbio(s); 2362 if (BIO_should_write(bio)) { 2363 return (SSL_ERROR_WANT_WRITE); 2364 } else if (BIO_should_read(bio)) { 2365 /* 2366 * See above (SSL_want_read(s) with 2367 * BIO_should_write(bio)) 2368 */ 2369 return (SSL_ERROR_WANT_READ); 2370 } else if (BIO_should_io_special(bio)) { 2371 reason = BIO_get_retry_reason(bio); 2372 if (reason == BIO_RR_CONNECT) 2373 return (SSL_ERROR_WANT_CONNECT); 2374 else if (reason == BIO_RR_ACCEPT) 2375 return (SSL_ERROR_WANT_ACCEPT); 2376 else 2377 return (SSL_ERROR_SYSCALL); 2378 } 2379 } 2380 if ((i < 0) && SSL_want_x509_lookup(s)) { 2381 return (SSL_ERROR_WANT_X509_LOOKUP); 2382 } 2383 2384 if (i == 0) { 2385 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2386 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2387 return (SSL_ERROR_ZERO_RETURN); 2388 } 2389 return (SSL_ERROR_SYSCALL); 2390 } 2391 2392 int 2393 SSL_do_handshake(SSL *s) 2394 { 2395 int ret = 1; 2396 2397 if (s->handshake_func == NULL) { 2398 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2399 return (-1); 2400 } 2401 2402 s->method->ssl_renegotiate_check(s); 2403 2404 if (SSL_in_init(s) || SSL_in_before(s)) { 2405 ret = s->handshake_func(s); 2406 } 2407 return (ret); 2408 } 2409 2410 /* 2411 * For the next 2 functions, SSL_clear() sets shutdown and so 2412 * one of these calls will reset it 2413 */ 2414 void 2415 SSL_set_accept_state(SSL *s) 2416 { 2417 s->server = 1; 2418 s->shutdown = 0; 2419 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2420 s->handshake_func = s->method->ssl_accept; 2421 /* clear the current cipher */ 2422 ssl_clear_cipher_ctx(s); 2423 ssl_clear_hash_ctx(&s->read_hash); 2424 ssl_clear_hash_ctx(&s->write_hash); 2425 } 2426 2427 void 2428 SSL_set_connect_state(SSL *s) 2429 { 2430 s->server = 0; 2431 s->shutdown = 0; 2432 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2433 s->handshake_func = s->method->ssl_connect; 2434 /* clear the current cipher */ 2435 ssl_clear_cipher_ctx(s); 2436 ssl_clear_hash_ctx(&s->read_hash); 2437 ssl_clear_hash_ctx(&s->write_hash); 2438 } 2439 2440 int 2441 ssl_undefined_function(SSL *s) 2442 { 2443 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2444 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2445 return (0); 2446 } 2447 2448 int 2449 ssl_undefined_void_function(void) 2450 { 2451 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2452 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2453 return (0); 2454 } 2455 2456 int 2457 ssl_undefined_const_function(const SSL *s) 2458 { 2459 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2460 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2461 return (0); 2462 } 2463 2464 const char * 2465 ssl_version_string(int ver) 2466 { 2467 switch (ver) { 2468 case DTLS1_VERSION: 2469 return (SSL_TXT_DTLS1); 2470 case TLS1_VERSION: 2471 return (SSL_TXT_TLSV1); 2472 case TLS1_1_VERSION: 2473 return (SSL_TXT_TLSV1_1); 2474 case TLS1_2_VERSION: 2475 return (SSL_TXT_TLSV1_2); 2476 default: 2477 return ("unknown"); 2478 } 2479 } 2480 2481 const char * 2482 SSL_get_version(const SSL *s) 2483 { 2484 return ssl_version_string(s->version); 2485 } 2486 2487 int 2488 ssl_enabled_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver) 2489 { 2490 uint16_t min_version, max_version; 2491 2492 /* 2493 * The enabled versions have to be a contiguous range, which means we 2494 * cannot enable and disable single versions at our whim, even though 2495 * this is what the OpenSSL flags allow. The historical way this has 2496 * been handled is by making a flag mean that all higher versions 2497 * are disabled, if any version lower than the flag is enabled. 2498 */ 2499 2500 min_version = 0; 2501 max_version = TLS1_2_VERSION; 2502 2503 if ((s->options & SSL_OP_NO_TLSv1) == 0) 2504 min_version = TLS1_VERSION; 2505 else if ((s->options & SSL_OP_NO_TLSv1_1) == 0) 2506 min_version = TLS1_1_VERSION; 2507 else if ((s->options & SSL_OP_NO_TLSv1_2) == 0) 2508 min_version = TLS1_2_VERSION; 2509 2510 if ((s->options & SSL_OP_NO_TLSv1_2) && min_version < TLS1_2_VERSION) 2511 max_version = TLS1_1_VERSION; 2512 if ((s->options & SSL_OP_NO_TLSv1_1) && min_version < TLS1_1_VERSION) 2513 max_version = TLS1_VERSION; 2514 if ((s->options & SSL_OP_NO_TLSv1) && min_version < TLS1_VERSION) 2515 max_version = 0; 2516 2517 /* Everything has been disabled... */ 2518 if (min_version == 0 || max_version == 0) 2519 return 0; 2520 2521 if (min_ver != NULL) 2522 *min_ver = min_version; 2523 if (max_ver != NULL) 2524 *max_ver = max_version; 2525 2526 return 1; 2527 } 2528 2529 int 2530 ssl_max_shared_version(SSL *s, uint16_t peer_ver, uint16_t *max_ver) 2531 { 2532 uint16_t min_version, max_version, shared_version; 2533 2534 *max_ver = 0; 2535 2536 if (peer_ver >= TLS1_2_VERSION) 2537 shared_version = TLS1_2_VERSION; 2538 else if (peer_ver >= TLS1_1_VERSION) 2539 shared_version = TLS1_1_VERSION; 2540 else if (peer_ver >= TLS1_VERSION) 2541 shared_version = TLS1_VERSION; 2542 else 2543 return 0; 2544 2545 if (!ssl_enabled_version_range(s, &min_version, &max_version)) 2546 return 0; 2547 2548 if (shared_version < min_version) 2549 return 0; 2550 2551 if (shared_version > max_version) 2552 shared_version = max_version; 2553 2554 *max_ver = shared_version; 2555 2556 return 1; 2557 } 2558 2559 uint16_t 2560 ssl_max_server_version(SSL *s) 2561 { 2562 uint16_t max_version; 2563 2564 /* 2565 * The SSL method will be changed during version negotiation, as such 2566 * we want to use the SSL method from the context. 2567 */ 2568 max_version = s->ctx->method->version; 2569 2570 if (SSL_IS_DTLS(s)) 2571 return (DTLS1_VERSION); 2572 2573 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2574 max_version >= TLS1_2_VERSION) 2575 return (TLS1_2_VERSION); 2576 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2577 max_version >= TLS1_1_VERSION) 2578 return (TLS1_1_VERSION); 2579 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2580 max_version >= TLS1_VERSION) 2581 return (TLS1_VERSION); 2582 2583 return (0); 2584 } 2585 2586 SSL * 2587 SSL_dup(SSL *s) 2588 { 2589 STACK_OF(X509_NAME) *sk; 2590 X509_NAME *xn; 2591 SSL *ret; 2592 int i; 2593 2594 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2595 return (NULL); 2596 2597 ret->version = s->version; 2598 ret->type = s->type; 2599 ret->method = s->method; 2600 2601 if (s->session != NULL) { 2602 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2603 SSL_copy_session_id(ret, s); 2604 } else { 2605 /* 2606 * No session has been established yet, so we have to expect 2607 * that s->cert or ret->cert will be changed later -- 2608 * they should not both point to the same object, 2609 * and thus we can't use SSL_copy_session_id. 2610 */ 2611 2612 ret->method->ssl_free(ret); 2613 ret->method = s->method; 2614 ret->method->ssl_new(ret); 2615 2616 if (s->cert != NULL) { 2617 if (ret->cert != NULL) { 2618 ssl_cert_free(ret->cert); 2619 } 2620 ret->cert = ssl_cert_dup(s->cert); 2621 if (ret->cert == NULL) 2622 goto err; 2623 } 2624 2625 SSL_set_session_id_context(ret, 2626 s->sid_ctx, s->sid_ctx_length); 2627 } 2628 2629 ret->options = s->options; 2630 ret->mode = s->mode; 2631 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2632 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2633 ret->msg_callback = s->msg_callback; 2634 ret->msg_callback_arg = s->msg_callback_arg; 2635 SSL_set_verify(ret, SSL_get_verify_mode(s), 2636 SSL_get_verify_callback(s)); 2637 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2638 ret->generate_session_id = s->generate_session_id; 2639 2640 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2641 2642 ret->debug = s->debug; 2643 2644 /* copy app data, a little dangerous perhaps */ 2645 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2646 &ret->ex_data, &s->ex_data)) 2647 goto err; 2648 2649 /* setup rbio, and wbio */ 2650 if (s->rbio != NULL) { 2651 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2652 goto err; 2653 } 2654 if (s->wbio != NULL) { 2655 if (s->wbio != s->rbio) { 2656 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2657 goto err; 2658 } else 2659 ret->wbio = ret->rbio; 2660 } 2661 ret->rwstate = s->rwstate; 2662 ret->in_handshake = s->in_handshake; 2663 ret->handshake_func = s->handshake_func; 2664 ret->server = s->server; 2665 ret->renegotiate = s->renegotiate; 2666 ret->new_session = s->new_session; 2667 ret->quiet_shutdown = s->quiet_shutdown; 2668 ret->shutdown = s->shutdown; 2669 /* SSL_dup does not really work at any state, though */ 2670 ret->state=s->state; 2671 ret->rstate = s->rstate; 2672 2673 /* 2674 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2675 * ret->init_off 2676 */ 2677 ret->init_num = 0; 2678 2679 ret->hit = s->hit; 2680 2681 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2682 2683 /* dup the cipher_list and cipher_list_by_id stacks */ 2684 if (s->cipher_list != NULL) { 2685 if ((ret->cipher_list = 2686 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2687 goto err; 2688 } 2689 if (s->cipher_list_by_id != NULL) { 2690 if ((ret->cipher_list_by_id = 2691 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2692 goto err; 2693 } 2694 2695 /* Dup the client_CA list */ 2696 if (s->client_CA != NULL) { 2697 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2698 ret->client_CA = sk; 2699 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2700 xn = sk_X509_NAME_value(sk, i); 2701 if (sk_X509_NAME_set(sk, i, 2702 X509_NAME_dup(xn)) == NULL) { 2703 X509_NAME_free(xn); 2704 goto err; 2705 } 2706 } 2707 } 2708 2709 if (0) { 2710 err: 2711 if (ret != NULL) 2712 SSL_free(ret); 2713 ret = NULL; 2714 } 2715 return (ret); 2716 } 2717 2718 void 2719 ssl_clear_cipher_ctx(SSL *s) 2720 { 2721 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2722 s->enc_read_ctx = NULL; 2723 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2724 s->enc_write_ctx = NULL; 2725 2726 if (s->aead_read_ctx != NULL) { 2727 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2728 free(s->aead_read_ctx); 2729 s->aead_read_ctx = NULL; 2730 } 2731 if (s->aead_write_ctx != NULL) { 2732 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2733 free(s->aead_write_ctx); 2734 s->aead_write_ctx = NULL; 2735 } 2736 2737 } 2738 2739 /* Fix this function so that it takes an optional type parameter */ 2740 X509 * 2741 SSL_get_certificate(const SSL *s) 2742 { 2743 if (s->cert != NULL) 2744 return (s->cert->key->x509); 2745 else 2746 return (NULL); 2747 } 2748 2749 /* Fix this function so that it takes an optional type parameter */ 2750 EVP_PKEY * 2751 SSL_get_privatekey(SSL *s) 2752 { 2753 if (s->cert != NULL) 2754 return (s->cert->key->privatekey); 2755 else 2756 return (NULL); 2757 } 2758 2759 const SSL_CIPHER * 2760 SSL_get_current_cipher(const SSL *s) 2761 { 2762 if ((s->session != NULL) && (s->session->cipher != NULL)) 2763 return (s->session->cipher); 2764 return (NULL); 2765 } 2766 const void * 2767 SSL_get_current_compression(SSL *s) 2768 { 2769 return (NULL); 2770 } 2771 2772 const void * 2773 SSL_get_current_expansion(SSL *s) 2774 { 2775 return (NULL); 2776 } 2777 2778 int 2779 ssl_init_wbio_buffer(SSL *s, int push) 2780 { 2781 BIO *bbio; 2782 2783 if (s->bbio == NULL) { 2784 bbio = BIO_new(BIO_f_buffer()); 2785 if (bbio == NULL) 2786 return (0); 2787 s->bbio = bbio; 2788 } else { 2789 bbio = s->bbio; 2790 if (s->bbio == s->wbio) 2791 s->wbio = BIO_pop(s->wbio); 2792 } 2793 (void)BIO_reset(bbio); 2794 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2795 if (!BIO_set_read_buffer_size(bbio, 1)) { 2796 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2797 return (0); 2798 } 2799 if (push) { 2800 if (s->wbio != bbio) 2801 s->wbio = BIO_push(bbio, s->wbio); 2802 } else { 2803 if (s->wbio == bbio) 2804 s->wbio = BIO_pop(bbio); 2805 } 2806 return (1); 2807 } 2808 2809 void 2810 ssl_free_wbio_buffer(SSL *s) 2811 { 2812 if (s == NULL) 2813 return; 2814 2815 if (s->bbio == NULL) 2816 return; 2817 2818 if (s->bbio == s->wbio) { 2819 /* remove buffering */ 2820 s->wbio = BIO_pop(s->wbio); 2821 } 2822 BIO_free(s->bbio); 2823 s->bbio = NULL; 2824 } 2825 2826 void 2827 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2828 { 2829 ctx->quiet_shutdown = mode; 2830 } 2831 2832 int 2833 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2834 { 2835 return (ctx->quiet_shutdown); 2836 } 2837 2838 void 2839 SSL_set_quiet_shutdown(SSL *s, int mode) 2840 { 2841 s->quiet_shutdown = mode; 2842 } 2843 2844 int 2845 SSL_get_quiet_shutdown(const SSL *s) 2846 { 2847 return (s->quiet_shutdown); 2848 } 2849 2850 void 2851 SSL_set_shutdown(SSL *s, int mode) 2852 { 2853 s->shutdown = mode; 2854 } 2855 2856 int 2857 SSL_get_shutdown(const SSL *s) 2858 { 2859 return (s->shutdown); 2860 } 2861 2862 int 2863 SSL_version(const SSL *s) 2864 { 2865 return (s->version); 2866 } 2867 2868 SSL_CTX * 2869 SSL_get_SSL_CTX(const SSL *ssl) 2870 { 2871 return (ssl->ctx); 2872 } 2873 2874 SSL_CTX * 2875 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2876 { 2877 CERT *ocert = ssl->cert; 2878 2879 if (ssl->ctx == ctx) 2880 return (ssl->ctx); 2881 if (ctx == NULL) 2882 ctx = ssl->initial_ctx; 2883 ssl->cert = ssl_cert_dup(ctx->cert); 2884 if (ocert != NULL) { 2885 int i; 2886 /* Copy negotiated digests from original certificate. */ 2887 for (i = 0; i < SSL_PKEY_NUM; i++) 2888 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2889 ssl_cert_free(ocert); 2890 } 2891 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2892 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2893 ssl->ctx = ctx; 2894 return (ssl->ctx); 2895 } 2896 2897 int 2898 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2899 { 2900 return (X509_STORE_set_default_paths(ctx->cert_store)); 2901 } 2902 2903 int 2904 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2905 const char *CApath) 2906 { 2907 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2908 } 2909 2910 int 2911 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2912 { 2913 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2914 } 2915 2916 void 2917 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2918 { 2919 ssl->info_callback = cb; 2920 } 2921 2922 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2923 { 2924 return (ssl->info_callback); 2925 } 2926 2927 int 2928 SSL_state(const SSL *ssl) 2929 { 2930 return (ssl->state); 2931 } 2932 2933 void 2934 SSL_set_state(SSL *ssl, int state) 2935 { 2936 ssl->state = state; 2937 } 2938 2939 void 2940 SSL_set_verify_result(SSL *ssl, long arg) 2941 { 2942 ssl->verify_result = arg; 2943 } 2944 2945 long 2946 SSL_get_verify_result(const SSL *ssl) 2947 { 2948 return (ssl->verify_result); 2949 } 2950 2951 int 2952 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2953 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2954 { 2955 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2956 new_func, dup_func, free_func)); 2957 } 2958 2959 int 2960 SSL_set_ex_data(SSL *s, int idx, void *arg) 2961 { 2962 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2963 } 2964 2965 void * 2966 SSL_get_ex_data(const SSL *s, int idx) 2967 { 2968 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2969 } 2970 2971 int 2972 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2973 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2974 { 2975 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2976 new_func, dup_func, free_func)); 2977 } 2978 2979 int 2980 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2981 { 2982 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2983 } 2984 2985 void * 2986 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2987 { 2988 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2989 } 2990 2991 int 2992 ssl_ok(SSL *s) 2993 { 2994 return (1); 2995 } 2996 2997 X509_STORE * 2998 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2999 { 3000 return (ctx->cert_store); 3001 } 3002 3003 void 3004 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3005 { 3006 if (ctx->cert_store != NULL) 3007 X509_STORE_free(ctx->cert_store); 3008 ctx->cert_store = store; 3009 } 3010 3011 int 3012 SSL_want(const SSL *s) 3013 { 3014 return (s->rwstate); 3015 } 3016 3017 void 3018 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 3019 int keylength)) 3020 { 3021 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3022 } 3023 3024 void 3025 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 3026 int keylength)) 3027 { 3028 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3029 } 3030 3031 void 3032 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3033 int keylength)) 3034 { 3035 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3036 } 3037 3038 void 3039 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3040 int keylength)) 3041 { 3042 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3043 } 3044 3045 void 3046 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3047 int is_export, int keylength)) 3048 { 3049 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3050 (void (*)(void))ecdh); 3051 } 3052 3053 void 3054 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3055 int keylength)) 3056 { 3057 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3058 } 3059 3060 3061 void 3062 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3063 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3064 { 3065 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3066 (void (*)(void))cb); 3067 } 3068 3069 void 3070 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3071 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3072 { 3073 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3074 } 3075 3076 void 3077 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3078 { 3079 if (*hash) 3080 EVP_MD_CTX_destroy(*hash); 3081 *hash = NULL; 3082 } 3083 3084 void 3085 SSL_set_debug(SSL *s, int debug) 3086 { 3087 s->debug = debug; 3088 } 3089 3090 int 3091 SSL_cache_hit(SSL *s) 3092 { 3093 return (s->hit); 3094 } 3095 3096 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3097