1 /* $OpenBSD: ssl_lib.c,v 1.115 2015/10/19 17:59:39 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 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 LHASH_OF(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 { 1368 int i; 1369 SSL_CIPHER *c; 1370 unsigned char *q; 1371 1372 if (sk == NULL) 1373 return (0); 1374 q = p; 1375 1376 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1377 c = sk_SSL_CIPHER_value(sk, i); 1378 1379 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1380 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1381 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1382 continue; 1383 1384 s2n(ssl3_cipher_get_value(c), p); 1385 } 1386 1387 /* 1388 * If p == q, no ciphers and caller indicates an error. Otherwise 1389 * add SCSV if not renegotiating. 1390 */ 1391 if (p != q && !s->renegotiate) 1392 s2n(SSL3_CK_SCSV & SSL3_CK_VALUE_MASK, p); 1393 1394 return (p - q); 1395 } 1396 1397 STACK_OF(SSL_CIPHER) * 1398 ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, int num) 1399 { 1400 CBS cbs; 1401 const SSL_CIPHER *c; 1402 STACK_OF(SSL_CIPHER) *sk = NULL; 1403 unsigned long cipher_id; 1404 uint16_t cipher_value, max_version; 1405 1406 if (s->s3) 1407 s->s3->send_connection_binding = 0; 1408 1409 /* 1410 * RFC 5246 section 7.4.1.2 defines the interval as [2,2^16-2]. 1411 */ 1412 if (num < 2 || num > 0x10000 - 2) { 1413 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1414 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1415 return (NULL); 1416 } 1417 1418 if ((sk = sk_SSL_CIPHER_new_null()) == NULL) { 1419 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1420 goto err; 1421 } 1422 1423 CBS_init(&cbs, p, num); 1424 while (CBS_len(&cbs) > 0) { 1425 if (!CBS_get_u16(&cbs, &cipher_value)) { 1426 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1427 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1428 goto err; 1429 } 1430 1431 cipher_id = SSL3_CK_ID | cipher_value; 1432 1433 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1434 /* 1435 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1436 * renegotiating. 1437 */ 1438 if (s->renegotiate) { 1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1440 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1441 ssl3_send_alert(s, SSL3_AL_FATAL, 1442 SSL_AD_HANDSHAKE_FAILURE); 1443 1444 goto err; 1445 } 1446 s->s3->send_connection_binding = 1; 1447 continue; 1448 } 1449 1450 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1451 /* 1452 * TLS_FALLBACK_SCSV indicates that the client 1453 * previously tried a higher protocol version. 1454 * Fail if the current version is an unexpected 1455 * downgrade. 1456 */ 1457 max_version = ssl_max_server_version(s); 1458 if (max_version == 0 || s->version < max_version) { 1459 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1460 SSL_R_INAPPROPRIATE_FALLBACK); 1461 if (s->s3 != NULL) 1462 ssl3_send_alert(s, SSL3_AL_FATAL, 1463 SSL_AD_INAPPROPRIATE_FALLBACK); 1464 goto err; 1465 } 1466 continue; 1467 } 1468 1469 if ((c = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1470 if (!sk_SSL_CIPHER_push(sk, c)) { 1471 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1472 ERR_R_MALLOC_FAILURE); 1473 goto err; 1474 } 1475 } 1476 } 1477 1478 return (sk); 1479 1480 err: 1481 sk_SSL_CIPHER_free(sk); 1482 1483 return (NULL); 1484 } 1485 1486 1487 /* 1488 * Return a servername extension value if provided in Client Hello, or NULL. 1489 * So far, only host_name types are defined (RFC 3546). 1490 */ 1491 const char * 1492 SSL_get_servername(const SSL *s, const int type) 1493 { 1494 if (type != TLSEXT_NAMETYPE_host_name) 1495 return (NULL); 1496 1497 return (s->session && !s->tlsext_hostname ? 1498 s->session->tlsext_hostname : 1499 s->tlsext_hostname); 1500 } 1501 1502 int 1503 SSL_get_servername_type(const SSL *s) 1504 { 1505 if (s->session && 1506 (!s->tlsext_hostname ? 1507 s->session->tlsext_hostname : s->tlsext_hostname)) 1508 return (TLSEXT_NAMETYPE_host_name); 1509 return (-1); 1510 } 1511 1512 /* 1513 * SSL_select_next_proto implements the standard protocol selection. It is 1514 * expected that this function is called from the callback set by 1515 * SSL_CTX_set_next_proto_select_cb. 1516 * 1517 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1518 * strings. The length byte itself is not included in the length. A byte 1519 * string of length 0 is invalid. No byte string may be truncated. 1520 * 1521 * The current, but experimental algorithm for selecting the protocol is: 1522 * 1523 * 1) If the server doesn't support NPN then this is indicated to the 1524 * callback. In this case, the client application has to abort the connection 1525 * or have a default application level protocol. 1526 * 1527 * 2) If the server supports NPN, but advertises an empty list then the 1528 * client selects the first protcol in its list, but indicates via the 1529 * API that this fallback case was enacted. 1530 * 1531 * 3) Otherwise, the client finds the first protocol in the server's list 1532 * that it supports and selects this protocol. This is because it's 1533 * assumed that the server has better information about which protocol 1534 * a client should use. 1535 * 1536 * 4) If the client doesn't support any of the server's advertised 1537 * protocols, then this is treated the same as case 2. 1538 * 1539 * It returns either 1540 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1541 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1542 */ 1543 int 1544 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1545 const unsigned char *server, unsigned int server_len, 1546 const unsigned char *client, unsigned int client_len) 1547 { 1548 unsigned int i, j; 1549 const unsigned char *result; 1550 int status = OPENSSL_NPN_UNSUPPORTED; 1551 1552 /* 1553 * For each protocol in server preference order, 1554 * see if we support it. 1555 */ 1556 for (i = 0; i < server_len; ) { 1557 for (j = 0; j < client_len; ) { 1558 if (server[i] == client[j] && 1559 memcmp(&server[i + 1], 1560 &client[j + 1], server[i]) == 0) { 1561 /* We found a match */ 1562 result = &server[i]; 1563 status = OPENSSL_NPN_NEGOTIATED; 1564 goto found; 1565 } 1566 j += client[j]; 1567 j++; 1568 } 1569 i += server[i]; 1570 i++; 1571 } 1572 1573 /* There's no overlap between our protocols and the server's list. */ 1574 result = client; 1575 status = OPENSSL_NPN_NO_OVERLAP; 1576 1577 found: 1578 *out = (unsigned char *) result + 1; 1579 *outlen = result[0]; 1580 return (status); 1581 } 1582 1583 /* 1584 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1585 * requested protocol for this connection and returns 0. If the client didn't 1586 * request any protocol, then *data is set to NULL. 1587 * 1588 * Note that the client can request any protocol it chooses. The value returned 1589 * from this function need not be a member of the list of supported protocols 1590 * provided by the callback. 1591 */ 1592 void 1593 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1594 unsigned *len) 1595 { 1596 *data = s->next_proto_negotiated; 1597 if (!*data) { 1598 *len = 0; 1599 } else { 1600 *len = s->next_proto_negotiated_len; 1601 } 1602 } 1603 1604 /* 1605 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1606 * TLS server needs a list of supported protocols for Next Protocol 1607 * Negotiation. The returned list must be in wire format. The list is returned 1608 * by setting |out| to point to it and |outlen| to its length. This memory will 1609 * not be modified, but one should assume that the SSL* keeps a reference to 1610 * it. 1611 * 1612 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1613 * Otherwise, no such extension will be included in the ServerHello. 1614 */ 1615 void 1616 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1617 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1618 { 1619 ctx->next_protos_advertised_cb = cb; 1620 ctx->next_protos_advertised_cb_arg = arg; 1621 } 1622 1623 /* 1624 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1625 * client needs to select a protocol from the server's provided list. |out| 1626 * must be set to point to the selected protocol (which may be within |in|). 1627 * The length of the protocol name must be written into |outlen|. The server's 1628 * advertised protocols are provided in |in| and |inlen|. The callback can 1629 * assume that |in| is syntactically valid. 1630 * 1631 * The client must select a protocol. It is fatal to the connection if this 1632 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1633 */ 1634 void 1635 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1636 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1637 unsigned int inlen, void *arg), void *arg) 1638 { 1639 ctx->next_proto_select_cb = cb; 1640 ctx->next_proto_select_cb_arg = arg; 1641 } 1642 1643 /* 1644 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1645 * protocols, which must be in wire-format (i.e. a series of non-empty, 1646 * 8-bit length-prefixed strings). Returns 0 on success. 1647 */ 1648 int 1649 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1650 unsigned int protos_len) 1651 { 1652 free(ctx->alpn_client_proto_list); 1653 if ((ctx->alpn_client_proto_list = malloc(protos_len)) == NULL) 1654 return (1); 1655 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1656 ctx->alpn_client_proto_list_len = protos_len; 1657 1658 return (0); 1659 } 1660 1661 /* 1662 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1663 * protocols, which must be in wire-format (i.e. a series of non-empty, 1664 * 8-bit length-prefixed strings). Returns 0 on success. 1665 */ 1666 int 1667 SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos, 1668 unsigned int protos_len) 1669 { 1670 free(ssl->alpn_client_proto_list); 1671 if ((ssl->alpn_client_proto_list = malloc(protos_len)) == NULL) 1672 return (1); 1673 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1674 ssl->alpn_client_proto_list_len = protos_len; 1675 1676 return (0); 1677 } 1678 1679 /* 1680 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1681 * ClientHello processing in order to select an ALPN protocol from the 1682 * client's list of offered protocols. 1683 */ 1684 void 1685 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1686 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1687 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1688 { 1689 ctx->alpn_select_cb = cb; 1690 ctx->alpn_select_cb_arg = arg; 1691 } 1692 1693 /* 1694 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1695 * it sets data to point to len bytes of protocol name (not including the 1696 * leading length-prefix byte). If the server didn't respond with* a negotiated 1697 * protocol then len will be zero. 1698 */ 1699 void 1700 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1701 unsigned *len) 1702 { 1703 *data = NULL; 1704 *len = 0; 1705 1706 if (ssl->s3 != NULL) { 1707 *data = ssl->s3->alpn_selected; 1708 *len = ssl->s3->alpn_selected_len; 1709 } 1710 } 1711 1712 int 1713 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1714 const char *label, size_t llen, const unsigned char *p, size_t plen, 1715 int use_context) 1716 { 1717 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1718 label, llen, p, plen, use_context)); 1719 } 1720 1721 static unsigned long 1722 ssl_session_hash(const SSL_SESSION *a) 1723 { 1724 unsigned long l; 1725 1726 l = (unsigned long) 1727 ((unsigned int) a->session_id[0] )| 1728 ((unsigned int) a->session_id[1]<< 8L)| 1729 ((unsigned long)a->session_id[2]<<16L)| 1730 ((unsigned long)a->session_id[3]<<24L); 1731 return (l); 1732 } 1733 1734 /* 1735 * NB: If this function (or indeed the hash function which uses a sort of 1736 * coarser function than this one) is changed, ensure 1737 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1738 * able to construct an SSL_SESSION that will collide with any existing session 1739 * with a matching session ID. 1740 */ 1741 static int 1742 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1743 { 1744 if (a->ssl_version != b->ssl_version) 1745 return (1); 1746 if (a->session_id_length != b->session_id_length) 1747 return (1); 1748 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1749 return (1); 1750 return (0); 1751 } 1752 1753 /* 1754 * These wrapper functions should remain rather than redeclaring 1755 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1756 * variable. The reason is that the functions aren't static, they're exposed via 1757 * ssl.h. 1758 */ 1759 static 1760 IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1761 static 1762 IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1763 1764 SSL_CTX * 1765 SSL_CTX_new(const SSL_METHOD *meth) 1766 { 1767 SSL_CTX *ret = NULL; 1768 1769 if (meth == NULL) { 1770 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1771 return (NULL); 1772 } 1773 1774 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1775 SSLerr(SSL_F_SSL_CTX_NEW, 1776 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1777 goto err; 1778 } 1779 ret = calloc(1, sizeof(SSL_CTX)); 1780 if (ret == NULL) 1781 goto err; 1782 1783 ret->method = meth; 1784 1785 ret->cert_store = NULL; 1786 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1787 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1788 ret->session_cache_head = NULL; 1789 ret->session_cache_tail = NULL; 1790 1791 /* We take the system default */ 1792 ret->session_timeout = meth->get_timeout(); 1793 1794 ret->new_session_cb = 0; 1795 ret->remove_session_cb = 0; 1796 ret->get_session_cb = 0; 1797 ret->generate_session_id = 0; 1798 1799 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1800 1801 ret->references = 1; 1802 ret->quiet_shutdown = 0; 1803 1804 ret->info_callback = NULL; 1805 1806 ret->app_verify_callback = 0; 1807 ret->app_verify_arg = NULL; 1808 1809 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1810 ret->read_ahead = 0; 1811 ret->msg_callback = 0; 1812 ret->msg_callback_arg = NULL; 1813 ret->verify_mode = SSL_VERIFY_NONE; 1814 ret->sid_ctx_length = 0; 1815 ret->default_verify_callback = NULL; 1816 if ((ret->cert = ssl_cert_new()) == NULL) 1817 goto err; 1818 1819 ret->default_passwd_callback = 0; 1820 ret->default_passwd_callback_userdata = NULL; 1821 ret->client_cert_cb = 0; 1822 ret->app_gen_cookie_cb = 0; 1823 ret->app_verify_cookie_cb = 0; 1824 1825 ret->sessions = lh_SSL_SESSION_new(); 1826 if (ret->sessions == NULL) 1827 goto err; 1828 ret->cert_store = X509_STORE_new(); 1829 if (ret->cert_store == NULL) 1830 goto err; 1831 1832 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1833 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1834 if (ret->cipher_list == NULL || 1835 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1836 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1837 goto err2; 1838 } 1839 1840 ret->param = X509_VERIFY_PARAM_new(); 1841 if (!ret->param) 1842 goto err; 1843 1844 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1845 SSLerr(SSL_F_SSL_CTX_NEW, 1846 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1847 goto err2; 1848 } 1849 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1850 SSLerr(SSL_F_SSL_CTX_NEW, 1851 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1852 goto err2; 1853 } 1854 1855 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1856 goto err; 1857 1858 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1859 1860 ret->extra_certs = NULL; 1861 1862 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1863 1864 ret->tlsext_servername_callback = 0; 1865 ret->tlsext_servername_arg = NULL; 1866 1867 /* Setup RFC4507 ticket keys */ 1868 arc4random_buf(ret->tlsext_tick_key_name, 16); 1869 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1870 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1871 1872 ret->tlsext_status_cb = 0; 1873 ret->tlsext_status_arg = NULL; 1874 1875 ret->next_protos_advertised_cb = 0; 1876 ret->next_proto_select_cb = 0; 1877 #ifndef OPENSSL_NO_ENGINE 1878 ret->client_cert_engine = NULL; 1879 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1880 #define eng_strx(x) #x 1881 #define eng_str(x) eng_strx(x) 1882 /* Use specific client engine automatically... ignore errors */ 1883 { 1884 ENGINE *eng; 1885 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1886 if (!eng) { 1887 ERR_clear_error(); 1888 ENGINE_load_builtin_engines(); 1889 eng = ENGINE_by_id(eng_str( 1890 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1891 } 1892 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1893 ERR_clear_error(); 1894 } 1895 #endif 1896 #endif 1897 /* 1898 * Default is to connect to non-RI servers. When RI is more widely 1899 * deployed might change this. 1900 */ 1901 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1902 1903 return (ret); 1904 err: 1905 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1906 err2: 1907 SSL_CTX_free(ret); 1908 return (NULL); 1909 } 1910 1911 void 1912 SSL_CTX_free(SSL_CTX *a) 1913 { 1914 int i; 1915 1916 if (a == NULL) 1917 return; 1918 1919 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1920 if (i > 0) 1921 return; 1922 1923 if (a->param) 1924 X509_VERIFY_PARAM_free(a->param); 1925 1926 /* 1927 * Free internal session cache. However: the remove_cb() may reference 1928 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1929 * after the sessions were flushed. 1930 * As the ex_data handling routines might also touch the session cache, 1931 * the most secure solution seems to be: empty (flush) the cache, then 1932 * free ex_data, then finally free the cache. 1933 * (See ticket [openssl.org #212].) 1934 */ 1935 if (a->sessions != NULL) 1936 SSL_CTX_flush_sessions(a, 0); 1937 1938 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1939 1940 if (a->sessions != NULL) 1941 lh_SSL_SESSION_free(a->sessions); 1942 1943 if (a->cert_store != NULL) 1944 X509_STORE_free(a->cert_store); 1945 if (a->cipher_list != NULL) 1946 sk_SSL_CIPHER_free(a->cipher_list); 1947 if (a->cipher_list_by_id != NULL) 1948 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1949 if (a->cert != NULL) 1950 ssl_cert_free(a->cert); 1951 if (a->client_CA != NULL) 1952 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1953 if (a->extra_certs != NULL) 1954 sk_X509_pop_free(a->extra_certs, X509_free); 1955 1956 #ifndef OPENSSL_NO_SRTP 1957 if (a->srtp_profiles) 1958 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1959 #endif 1960 1961 #ifndef OPENSSL_NO_ENGINE 1962 if (a->client_cert_engine) 1963 ENGINE_finish(a->client_cert_engine); 1964 #endif 1965 1966 free(a->alpn_client_proto_list); 1967 1968 free(a); 1969 } 1970 1971 void 1972 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1973 { 1974 ctx->default_passwd_callback = cb; 1975 } 1976 1977 void 1978 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1979 { 1980 ctx->default_passwd_callback_userdata = u; 1981 } 1982 1983 void 1984 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1985 void *), void *arg) 1986 { 1987 ctx->app_verify_callback = cb; 1988 ctx->app_verify_arg = arg; 1989 } 1990 1991 void 1992 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1993 { 1994 ctx->verify_mode = mode; 1995 ctx->default_verify_callback = cb; 1996 } 1997 1998 void 1999 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2000 { 2001 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2002 } 2003 2004 void 2005 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2006 { 2007 CERT_PKEY *cpk; 2008 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 2009 unsigned long mask_k, mask_a; 2010 int have_ecc_cert, ecdh_ok, ecdsa_ok; 2011 int have_ecdh_tmp; 2012 X509 *x = NULL; 2013 EVP_PKEY *ecc_pkey = NULL; 2014 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2015 2016 if (c == NULL) 2017 return; 2018 2019 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2020 c->dh_tmp_auto != 0); 2021 2022 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 2023 c->ecdh_tmp_auto != 0); 2024 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2025 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2026 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2027 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2028 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2029 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2030 /* FIX THIS EAY EAY EAY */ 2031 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2032 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2033 mask_k = 0; 2034 mask_a = 0; 2035 2036 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2037 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2038 mask_k |= SSL_kGOST; 2039 mask_a |= SSL_aGOST01; 2040 } 2041 2042 if (rsa_enc) 2043 mask_k|=SSL_kRSA; 2044 2045 if (dh_tmp) 2046 mask_k|=SSL_kDHE; 2047 2048 if (rsa_enc || rsa_sign) 2049 mask_a|=SSL_aRSA; 2050 2051 if (dsa_sign) 2052 mask_a|=SSL_aDSS; 2053 2054 mask_a|=SSL_aNULL; 2055 2056 /* 2057 * An ECC certificate may be usable for ECDH and/or 2058 * ECDSA cipher suites depending on the key usage extension. 2059 */ 2060 if (have_ecc_cert) { 2061 /* This call populates extension flags (ex_flags) */ 2062 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2063 X509_check_purpose(x, -1, 0); 2064 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2065 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2066 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2067 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2068 ecc_pkey = X509_get_pubkey(x); 2069 EVP_PKEY_free(ecc_pkey); 2070 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2071 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2072 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2073 } 2074 if (ecdh_ok) { 2075 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2076 mask_k|=SSL_kECDHr; 2077 mask_a|=SSL_aECDH; 2078 } 2079 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2080 mask_k|=SSL_kECDHe; 2081 mask_a|=SSL_aECDH; 2082 } 2083 } 2084 if (ecdsa_ok) 2085 mask_a|=SSL_aECDSA; 2086 } 2087 2088 if (have_ecdh_tmp) { 2089 mask_k|=SSL_kECDHE; 2090 } 2091 2092 2093 c->mask_k = mask_k; 2094 c->mask_a = mask_a; 2095 c->valid = 1; 2096 } 2097 2098 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2099 #define ku_reject(x, usage) \ 2100 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2101 2102 2103 int 2104 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2105 { 2106 unsigned long alg_k, alg_a; 2107 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2108 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2109 2110 alg_k = cs->algorithm_mkey; 2111 alg_a = cs->algorithm_auth; 2112 2113 /* This call populates the ex_flags field correctly */ 2114 X509_check_purpose(x, -1, 0); 2115 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2116 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2117 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2118 } 2119 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2120 /* key usage, if present, must allow key agreement */ 2121 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2122 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2123 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2124 return (0); 2125 } 2126 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2127 TLS1_2_VERSION) { 2128 /* signature alg must be ECDSA */ 2129 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2130 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2131 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2132 return (0); 2133 } 2134 } 2135 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2136 TLS1_2_VERSION) { 2137 /* signature alg must be RSA */ 2138 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2139 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2140 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2141 return (0); 2142 } 2143 } 2144 } 2145 if (alg_a & SSL_aECDSA) { 2146 /* key usage, if present, must allow signing */ 2147 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2148 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2149 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2150 return (0); 2151 } 2152 } 2153 2154 return (1); 2155 /* all checks are ok */ 2156 } 2157 2158 2159 /* THIS NEEDS CLEANING UP */ 2160 CERT_PKEY * 2161 ssl_get_server_send_pkey(const SSL *s) 2162 { 2163 unsigned long alg_k, alg_a; 2164 CERT *c; 2165 int i; 2166 2167 c = s->cert; 2168 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2169 2170 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2171 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2172 2173 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2174 /* 2175 * We don't need to look at SSL_kECDHE 2176 * since no certificate is needed for 2177 * anon ECDH and for authenticated 2178 * ECDHE, the check for the auth 2179 * algorithm will set i correctly 2180 * NOTE: For ECDH-RSA, we need an ECC 2181 * not an RSA cert but for EECDH-RSA 2182 * we need an RSA cert. Placing the 2183 * checks for SSL_kECDH before RSA 2184 * checks ensures the correct cert is chosen. 2185 */ 2186 i = SSL_PKEY_ECC; 2187 } else if (alg_a & SSL_aECDSA) { 2188 i = SSL_PKEY_ECC; 2189 } else if (alg_a & SSL_aDSS) { 2190 i = SSL_PKEY_DSA_SIGN; 2191 } else if (alg_a & SSL_aRSA) { 2192 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2193 i = SSL_PKEY_RSA_SIGN; 2194 else 2195 i = SSL_PKEY_RSA_ENC; 2196 } else if (alg_a & SSL_aGOST01) { 2197 i = SSL_PKEY_GOST01; 2198 } else { /* if (alg_a & SSL_aNULL) */ 2199 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2200 return (NULL); 2201 } 2202 2203 return (c->pkeys + i); 2204 } 2205 2206 X509 * 2207 ssl_get_server_send_cert(const SSL *s) 2208 { 2209 CERT_PKEY *cpk; 2210 2211 cpk = ssl_get_server_send_pkey(s); 2212 if (!cpk) 2213 return (NULL); 2214 return (cpk->x509); 2215 } 2216 2217 EVP_PKEY * 2218 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2219 { 2220 unsigned long alg_a; 2221 CERT *c; 2222 int idx = -1; 2223 2224 alg_a = cipher->algorithm_auth; 2225 c = s->cert; 2226 2227 if ((alg_a & SSL_aDSS) && 2228 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2229 idx = SSL_PKEY_DSA_SIGN; 2230 else if (alg_a & SSL_aRSA) { 2231 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2232 idx = SSL_PKEY_RSA_SIGN; 2233 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2234 idx = SSL_PKEY_RSA_ENC; 2235 } else if ((alg_a & SSL_aECDSA) && 2236 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2237 idx = SSL_PKEY_ECC; 2238 if (idx == -1) { 2239 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2240 return (NULL); 2241 } 2242 if (pmd) 2243 *pmd = c->pkeys[idx].digest; 2244 return (c->pkeys[idx].privatekey); 2245 } 2246 2247 DH * 2248 ssl_get_auto_dh(SSL *s) 2249 { 2250 CERT_PKEY *cpk; 2251 int keylen; 2252 DH *dhp; 2253 2254 if (s->cert->dh_tmp_auto == 2) { 2255 keylen = 1024; 2256 } else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) { 2257 keylen = 1024; 2258 if (s->s3->tmp.new_cipher->strength_bits == 256) 2259 keylen = 3072; 2260 } else { 2261 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2262 return (NULL); 2263 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2264 return (NULL); 2265 keylen = EVP_PKEY_bits(cpk->privatekey); 2266 } 2267 2268 if ((dhp = DH_new()) == NULL) 2269 return (NULL); 2270 2271 dhp->g = BN_new(); 2272 if (dhp->g != NULL) 2273 BN_set_word(dhp->g, 2); 2274 2275 if (keylen >= 8192) 2276 dhp->p = get_rfc3526_prime_8192(NULL); 2277 else if (keylen >= 4096) 2278 dhp->p = get_rfc3526_prime_4096(NULL); 2279 else if (keylen >= 3072) 2280 dhp->p = get_rfc3526_prime_3072(NULL); 2281 else if (keylen >= 2048) 2282 dhp->p = get_rfc3526_prime_2048(NULL); 2283 else if (keylen >= 1536) 2284 dhp->p = get_rfc3526_prime_1536(NULL); 2285 else 2286 dhp->p = get_rfc2409_prime_1024(NULL); 2287 2288 if (dhp->p == NULL || dhp->g == NULL) { 2289 DH_free(dhp); 2290 return (NULL); 2291 } 2292 return (dhp); 2293 } 2294 2295 void 2296 ssl_update_cache(SSL *s, int mode) 2297 { 2298 int i; 2299 2300 /* 2301 * If the session_id_length is 0, we are not supposed to cache it, 2302 * and it would be rather hard to do anyway :-) 2303 */ 2304 if (s->session->session_id_length == 0) 2305 return; 2306 2307 i = s->session_ctx->session_cache_mode; 2308 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2309 || SSL_CTX_add_session(s->session_ctx, s->session)) 2310 && (s->session_ctx->new_session_cb != NULL)) { 2311 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2312 if (!s->session_ctx->new_session_cb(s, s->session)) 2313 SSL_SESSION_free(s->session); 2314 } 2315 2316 /* auto flush every 255 connections */ 2317 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2318 ((i & mode) == mode)) { 2319 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2320 s->session_ctx->stats.sess_connect_good : 2321 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2322 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2323 } 2324 } 2325 } 2326 2327 const SSL_METHOD * 2328 SSL_get_ssl_method(SSL *s) 2329 { 2330 return (s->method); 2331 } 2332 2333 int 2334 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2335 { 2336 int conn = -1; 2337 int ret = 1; 2338 2339 if (s->method != meth) { 2340 if (s->handshake_func != NULL) 2341 conn = (s->handshake_func == s->method->ssl_connect); 2342 2343 if (s->method->version == meth->version) 2344 s->method = meth; 2345 else { 2346 s->method->ssl_free(s); 2347 s->method = meth; 2348 ret = s->method->ssl_new(s); 2349 } 2350 2351 if (conn == 1) 2352 s->handshake_func = meth->ssl_connect; 2353 else if (conn == 0) 2354 s->handshake_func = meth->ssl_accept; 2355 } 2356 return (ret); 2357 } 2358 2359 int 2360 SSL_get_error(const SSL *s, int i) 2361 { 2362 int reason; 2363 unsigned long l; 2364 BIO *bio; 2365 2366 if (i > 0) 2367 return (SSL_ERROR_NONE); 2368 2369 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2370 * etc, where we do encode the error */ 2371 if ((l = ERR_peek_error()) != 0) { 2372 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2373 return (SSL_ERROR_SYSCALL); 2374 else 2375 return (SSL_ERROR_SSL); 2376 } 2377 2378 if ((i < 0) && SSL_want_read(s)) { 2379 bio = SSL_get_rbio(s); 2380 if (BIO_should_read(bio)) { 2381 return (SSL_ERROR_WANT_READ); 2382 } else if (BIO_should_write(bio)) { 2383 /* 2384 * This one doesn't make too much sense... We never 2385 * try to write to the rbio, and an application 2386 * program where rbio and wbio are separate couldn't 2387 * even know what it should wait for. However if we 2388 * ever set s->rwstate incorrectly (so that we have 2389 * SSL_want_read(s) instead of SSL_want_write(s)) 2390 * and rbio and wbio *are* the same, this test works 2391 * around that bug; so it might be safer to keep it. 2392 */ 2393 return (SSL_ERROR_WANT_WRITE); 2394 } else if (BIO_should_io_special(bio)) { 2395 reason = BIO_get_retry_reason(bio); 2396 if (reason == BIO_RR_CONNECT) 2397 return (SSL_ERROR_WANT_CONNECT); 2398 else if (reason == BIO_RR_ACCEPT) 2399 return (SSL_ERROR_WANT_ACCEPT); 2400 else 2401 return (SSL_ERROR_SYSCALL); /* unknown */ 2402 } 2403 } 2404 2405 if ((i < 0) && SSL_want_write(s)) { 2406 bio = SSL_get_wbio(s); 2407 if (BIO_should_write(bio)) { 2408 return (SSL_ERROR_WANT_WRITE); 2409 } else if (BIO_should_read(bio)) { 2410 /* 2411 * See above (SSL_want_read(s) with 2412 * BIO_should_write(bio)) 2413 */ 2414 return (SSL_ERROR_WANT_READ); 2415 } else if (BIO_should_io_special(bio)) { 2416 reason = BIO_get_retry_reason(bio); 2417 if (reason == BIO_RR_CONNECT) 2418 return (SSL_ERROR_WANT_CONNECT); 2419 else if (reason == BIO_RR_ACCEPT) 2420 return (SSL_ERROR_WANT_ACCEPT); 2421 else 2422 return (SSL_ERROR_SYSCALL); 2423 } 2424 } 2425 if ((i < 0) && SSL_want_x509_lookup(s)) { 2426 return (SSL_ERROR_WANT_X509_LOOKUP); 2427 } 2428 2429 if (i == 0) { 2430 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2431 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2432 return (SSL_ERROR_ZERO_RETURN); 2433 } 2434 return (SSL_ERROR_SYSCALL); 2435 } 2436 2437 int 2438 SSL_do_handshake(SSL *s) 2439 { 2440 int ret = 1; 2441 2442 if (s->handshake_func == NULL) { 2443 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2444 return (-1); 2445 } 2446 2447 s->method->ssl_renegotiate_check(s); 2448 2449 if (SSL_in_init(s) || SSL_in_before(s)) { 2450 ret = s->handshake_func(s); 2451 } 2452 return (ret); 2453 } 2454 2455 /* 2456 * For the next 2 functions, SSL_clear() sets shutdown and so 2457 * one of these calls will reset it 2458 */ 2459 void 2460 SSL_set_accept_state(SSL *s) 2461 { 2462 s->server = 1; 2463 s->shutdown = 0; 2464 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2465 s->handshake_func = s->method->ssl_accept; 2466 /* clear the current cipher */ 2467 ssl_clear_cipher_ctx(s); 2468 ssl_clear_hash_ctx(&s->read_hash); 2469 ssl_clear_hash_ctx(&s->write_hash); 2470 } 2471 2472 void 2473 SSL_set_connect_state(SSL *s) 2474 { 2475 s->server = 0; 2476 s->shutdown = 0; 2477 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2478 s->handshake_func = s->method->ssl_connect; 2479 /* clear the current cipher */ 2480 ssl_clear_cipher_ctx(s); 2481 ssl_clear_hash_ctx(&s->read_hash); 2482 ssl_clear_hash_ctx(&s->write_hash); 2483 } 2484 2485 int 2486 ssl_undefined_function(SSL *s) 2487 { 2488 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2489 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2490 return (0); 2491 } 2492 2493 int 2494 ssl_undefined_void_function(void) 2495 { 2496 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2497 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2498 return (0); 2499 } 2500 2501 int 2502 ssl_undefined_const_function(const SSL *s) 2503 { 2504 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2505 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2506 return (0); 2507 } 2508 2509 const char * 2510 ssl_version_string(int ver) 2511 { 2512 switch (ver) { 2513 case DTLS1_VERSION: 2514 return (SSL_TXT_DTLS1); 2515 case TLS1_VERSION: 2516 return (SSL_TXT_TLSV1); 2517 case TLS1_1_VERSION: 2518 return (SSL_TXT_TLSV1_1); 2519 case TLS1_2_VERSION: 2520 return (SSL_TXT_TLSV1_2); 2521 default: 2522 return ("unknown"); 2523 } 2524 } 2525 2526 const char * 2527 SSL_get_version(const SSL *s) 2528 { 2529 return ssl_version_string(s->version); 2530 } 2531 2532 uint16_t 2533 ssl_max_server_version(SSL *s) 2534 { 2535 uint16_t max_version; 2536 2537 /* 2538 * The SSL method will be changed during version negotiation, as such 2539 * we want to use the SSL method from the context. 2540 */ 2541 max_version = s->ctx->method->version; 2542 2543 if (SSL_IS_DTLS(s)) 2544 return (DTLS1_VERSION); 2545 2546 if ((s->options & SSL_OP_NO_TLSv1_2) == 0 && 2547 max_version >= TLS1_2_VERSION) 2548 return (TLS1_2_VERSION); 2549 if ((s->options & SSL_OP_NO_TLSv1_1) == 0 && 2550 max_version >= TLS1_1_VERSION) 2551 return (TLS1_1_VERSION); 2552 if ((s->options & SSL_OP_NO_TLSv1) == 0 && 2553 max_version >= TLS1_VERSION) 2554 return (TLS1_VERSION); 2555 2556 return (0); 2557 } 2558 2559 SSL * 2560 SSL_dup(SSL *s) 2561 { 2562 STACK_OF(X509_NAME) *sk; 2563 X509_NAME *xn; 2564 SSL *ret; 2565 int i; 2566 2567 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2568 return (NULL); 2569 2570 ret->version = s->version; 2571 ret->type = s->type; 2572 ret->method = s->method; 2573 2574 if (s->session != NULL) { 2575 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2576 SSL_copy_session_id(ret, s); 2577 } else { 2578 /* 2579 * No session has been established yet, so we have to expect 2580 * that s->cert or ret->cert will be changed later -- 2581 * they should not both point to the same object, 2582 * and thus we can't use SSL_copy_session_id. 2583 */ 2584 2585 ret->method->ssl_free(ret); 2586 ret->method = s->method; 2587 ret->method->ssl_new(ret); 2588 2589 if (s->cert != NULL) { 2590 if (ret->cert != NULL) { 2591 ssl_cert_free(ret->cert); 2592 } 2593 ret->cert = ssl_cert_dup(s->cert); 2594 if (ret->cert == NULL) 2595 goto err; 2596 } 2597 2598 SSL_set_session_id_context(ret, 2599 s->sid_ctx, s->sid_ctx_length); 2600 } 2601 2602 ret->options = s->options; 2603 ret->mode = s->mode; 2604 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2605 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2606 ret->msg_callback = s->msg_callback; 2607 ret->msg_callback_arg = s->msg_callback_arg; 2608 SSL_set_verify(ret, SSL_get_verify_mode(s), 2609 SSL_get_verify_callback(s)); 2610 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2611 ret->generate_session_id = s->generate_session_id; 2612 2613 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2614 2615 ret->debug = s->debug; 2616 2617 /* copy app data, a little dangerous perhaps */ 2618 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2619 &ret->ex_data, &s->ex_data)) 2620 goto err; 2621 2622 /* setup rbio, and wbio */ 2623 if (s->rbio != NULL) { 2624 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2625 goto err; 2626 } 2627 if (s->wbio != NULL) { 2628 if (s->wbio != s->rbio) { 2629 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2630 goto err; 2631 } else 2632 ret->wbio = ret->rbio; 2633 } 2634 ret->rwstate = s->rwstate; 2635 ret->in_handshake = s->in_handshake; 2636 ret->handshake_func = s->handshake_func; 2637 ret->server = s->server; 2638 ret->renegotiate = s->renegotiate; 2639 ret->new_session = s->new_session; 2640 ret->quiet_shutdown = s->quiet_shutdown; 2641 ret->shutdown = s->shutdown; 2642 /* SSL_dup does not really work at any state, though */ 2643 ret->state=s->state; 2644 ret->rstate = s->rstate; 2645 2646 /* 2647 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2648 * ret->init_off 2649 */ 2650 ret->init_num = 0; 2651 2652 ret->hit = s->hit; 2653 2654 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2655 2656 /* dup the cipher_list and cipher_list_by_id stacks */ 2657 if (s->cipher_list != NULL) { 2658 if ((ret->cipher_list = 2659 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2660 goto err; 2661 } 2662 if (s->cipher_list_by_id != NULL) { 2663 if ((ret->cipher_list_by_id = 2664 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2665 goto err; 2666 } 2667 2668 /* Dup the client_CA list */ 2669 if (s->client_CA != NULL) { 2670 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2671 ret->client_CA = sk; 2672 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2673 xn = sk_X509_NAME_value(sk, i); 2674 if (sk_X509_NAME_set(sk, i, 2675 X509_NAME_dup(xn)) == NULL) { 2676 X509_NAME_free(xn); 2677 goto err; 2678 } 2679 } 2680 } 2681 2682 if (0) { 2683 err: 2684 if (ret != NULL) 2685 SSL_free(ret); 2686 ret = NULL; 2687 } 2688 return (ret); 2689 } 2690 2691 void 2692 ssl_clear_cipher_ctx(SSL *s) 2693 { 2694 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2695 s->enc_read_ctx = NULL; 2696 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2697 s->enc_write_ctx = NULL; 2698 2699 if (s->aead_read_ctx != NULL) { 2700 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2701 free(s->aead_read_ctx); 2702 s->aead_read_ctx = NULL; 2703 } 2704 if (s->aead_write_ctx != NULL) { 2705 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2706 free(s->aead_write_ctx); 2707 s->aead_write_ctx = NULL; 2708 } 2709 2710 } 2711 2712 /* Fix this function so that it takes an optional type parameter */ 2713 X509 * 2714 SSL_get_certificate(const SSL *s) 2715 { 2716 if (s->cert != NULL) 2717 return (s->cert->key->x509); 2718 else 2719 return (NULL); 2720 } 2721 2722 /* Fix this function so that it takes an optional type parameter */ 2723 EVP_PKEY * 2724 SSL_get_privatekey(SSL *s) 2725 { 2726 if (s->cert != NULL) 2727 return (s->cert->key->privatekey); 2728 else 2729 return (NULL); 2730 } 2731 2732 const SSL_CIPHER * 2733 SSL_get_current_cipher(const SSL *s) 2734 { 2735 if ((s->session != NULL) && (s->session->cipher != NULL)) 2736 return (s->session->cipher); 2737 return (NULL); 2738 } 2739 const void * 2740 SSL_get_current_compression(SSL *s) 2741 { 2742 return (NULL); 2743 } 2744 2745 const void * 2746 SSL_get_current_expansion(SSL *s) 2747 { 2748 return (NULL); 2749 } 2750 2751 int 2752 ssl_init_wbio_buffer(SSL *s, int push) 2753 { 2754 BIO *bbio; 2755 2756 if (s->bbio == NULL) { 2757 bbio = BIO_new(BIO_f_buffer()); 2758 if (bbio == NULL) 2759 return (0); 2760 s->bbio = bbio; 2761 } else { 2762 bbio = s->bbio; 2763 if (s->bbio == s->wbio) 2764 s->wbio = BIO_pop(s->wbio); 2765 } 2766 (void)BIO_reset(bbio); 2767 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2768 if (!BIO_set_read_buffer_size(bbio, 1)) { 2769 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2770 return (0); 2771 } 2772 if (push) { 2773 if (s->wbio != bbio) 2774 s->wbio = BIO_push(bbio, s->wbio); 2775 } else { 2776 if (s->wbio == bbio) 2777 s->wbio = BIO_pop(bbio); 2778 } 2779 return (1); 2780 } 2781 2782 void 2783 ssl_free_wbio_buffer(SSL *s) 2784 { 2785 if (s == NULL) 2786 return; 2787 2788 if (s->bbio == NULL) 2789 return; 2790 2791 if (s->bbio == s->wbio) { 2792 /* remove buffering */ 2793 s->wbio = BIO_pop(s->wbio); 2794 } 2795 BIO_free(s->bbio); 2796 s->bbio = NULL; 2797 } 2798 2799 void 2800 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2801 { 2802 ctx->quiet_shutdown = mode; 2803 } 2804 2805 int 2806 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2807 { 2808 return (ctx->quiet_shutdown); 2809 } 2810 2811 void 2812 SSL_set_quiet_shutdown(SSL *s, int mode) 2813 { 2814 s->quiet_shutdown = mode; 2815 } 2816 2817 int 2818 SSL_get_quiet_shutdown(const SSL *s) 2819 { 2820 return (s->quiet_shutdown); 2821 } 2822 2823 void 2824 SSL_set_shutdown(SSL *s, int mode) 2825 { 2826 s->shutdown = mode; 2827 } 2828 2829 int 2830 SSL_get_shutdown(const SSL *s) 2831 { 2832 return (s->shutdown); 2833 } 2834 2835 int 2836 SSL_version(const SSL *s) 2837 { 2838 return (s->version); 2839 } 2840 2841 SSL_CTX * 2842 SSL_get_SSL_CTX(const SSL *ssl) 2843 { 2844 return (ssl->ctx); 2845 } 2846 2847 SSL_CTX * 2848 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2849 { 2850 if (ssl->ctx == ctx) 2851 return (ssl->ctx); 2852 if (ctx == NULL) 2853 ctx = ssl->initial_ctx; 2854 if (ssl->cert != NULL) 2855 ssl_cert_free(ssl->cert); 2856 ssl->cert = ssl_cert_dup(ctx->cert); 2857 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2858 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2859 ssl->ctx = ctx; 2860 return (ssl->ctx); 2861 } 2862 2863 int 2864 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2865 { 2866 return (X509_STORE_set_default_paths(ctx->cert_store)); 2867 } 2868 2869 int 2870 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2871 const char *CApath) 2872 { 2873 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2874 } 2875 2876 int 2877 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2878 { 2879 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2880 } 2881 2882 void 2883 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2884 { 2885 ssl->info_callback = cb; 2886 } 2887 2888 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2889 { 2890 return (ssl->info_callback); 2891 } 2892 2893 int 2894 SSL_state(const SSL *ssl) 2895 { 2896 return (ssl->state); 2897 } 2898 2899 void 2900 SSL_set_state(SSL *ssl, int state) 2901 { 2902 ssl->state = state; 2903 } 2904 2905 void 2906 SSL_set_verify_result(SSL *ssl, long arg) 2907 { 2908 ssl->verify_result = arg; 2909 } 2910 2911 long 2912 SSL_get_verify_result(const SSL *ssl) 2913 { 2914 return (ssl->verify_result); 2915 } 2916 2917 int 2918 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2919 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2920 { 2921 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2922 new_func, dup_func, free_func)); 2923 } 2924 2925 int 2926 SSL_set_ex_data(SSL *s, int idx, void *arg) 2927 { 2928 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2929 } 2930 2931 void * 2932 SSL_get_ex_data(const SSL *s, int idx) 2933 { 2934 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2935 } 2936 2937 int 2938 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2939 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2940 { 2941 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2942 new_func, dup_func, free_func)); 2943 } 2944 2945 int 2946 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2947 { 2948 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2949 } 2950 2951 void * 2952 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2953 { 2954 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2955 } 2956 2957 int 2958 ssl_ok(SSL *s) 2959 { 2960 return (1); 2961 } 2962 2963 X509_STORE * 2964 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2965 { 2966 return (ctx->cert_store); 2967 } 2968 2969 void 2970 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2971 { 2972 if (ctx->cert_store != NULL) 2973 X509_STORE_free(ctx->cert_store); 2974 ctx->cert_store = store; 2975 } 2976 2977 int 2978 SSL_want(const SSL *s) 2979 { 2980 return (s->rwstate); 2981 } 2982 2983 void 2984 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2985 int keylength)) 2986 { 2987 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2988 } 2989 2990 void 2991 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2992 int keylength)) 2993 { 2994 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2995 } 2996 2997 void 2998 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2999 int keylength)) 3000 { 3001 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3002 } 3003 3004 void 3005 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3006 int keylength)) 3007 { 3008 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3009 } 3010 3011 void 3012 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3013 int is_export, int keylength)) 3014 { 3015 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3016 (void (*)(void))ecdh); 3017 } 3018 3019 void 3020 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3021 int keylength)) 3022 { 3023 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3024 } 3025 3026 3027 void 3028 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3029 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3030 { 3031 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3032 (void (*)(void))cb); 3033 } 3034 3035 void 3036 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3037 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3038 { 3039 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3040 } 3041 3042 void 3043 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3044 { 3045 if (*hash) 3046 EVP_MD_CTX_destroy(*hash); 3047 *hash = NULL; 3048 } 3049 3050 void 3051 SSL_set_debug(SSL *s, int debug) 3052 { 3053 s->debug = debug; 3054 } 3055 3056 int 3057 SSL_cache_hit(SSL *s) 3058 { 3059 return (s->hit); 3060 } 3061 3062 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3063