ssl_lib.c revision 1.88
1/* $OpenBSD: ssl_lib.c,v 1.88 2014/10/31 14:51:01 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#include "ssl_locl.h" 145#include <openssl/objects.h> 146#include <openssl/lhash.h> 147#include <openssl/x509v3.h> 148#include <openssl/ocsp.h> 149#include <openssl/dh.h> 150#ifndef OPENSSL_NO_ENGINE 151#include <openssl/engine.h> 152#endif 153 154const char *SSL_version_str = OPENSSL_VERSION_TEXT; 155 156SSL3_ENC_METHOD ssl3_undef_enc_method = { 157 /* 158 * Evil casts, but these functions are only called if there's a 159 * library bug. 160 */ 161 .enc = (int (*)(SSL *, int))ssl_undefined_function, 162 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 163 .setup_key_block = ssl_undefined_function, 164 .generate_master_secret = (int (*)(SSL *, unsigned char *, 165 unsigned char *, int))ssl_undefined_function, 166 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 167 .final_finish_mac = (int (*)(SSL *, const char*, int, 168 unsigned char *))ssl_undefined_function, 169 .finish_mac_length = 0, 170 .cert_verify_mac = (int (*)(SSL *, int, 171 unsigned char *))ssl_undefined_function, 172 .client_finished_label = NULL, 173 .client_finished_label_len = 0, 174 .server_finished_label = NULL, 175 .server_finished_label_len = 0, 176 .alert_value = (int (*)(int))ssl_undefined_function, 177 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 178 const char *, size_t, const unsigned char *, size_t, 179 int use_context))ssl_undefined_function, 180 .enc_flags = 0, 181}; 182 183int 184SSL_clear(SSL *s) 185{ 186 if (s->method == NULL) { 187 SSLerr(SSL_F_SSL_CLEAR, 188 SSL_R_NO_METHOD_SPECIFIED); 189 return (0); 190 } 191 192 if (ssl_clear_bad_session(s)) { 193 SSL_SESSION_free(s->session); 194 s->session = NULL; 195 } 196 197 s->error = 0; 198 s->hit = 0; 199 s->shutdown = 0; 200 201 if (s->renegotiate) { 202 SSLerr(SSL_F_SSL_CLEAR, 203 ERR_R_INTERNAL_ERROR); 204 return (0); 205 } 206 207 s->type = 0; 208 209 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 210 211 s->version = s->method->version; 212 s->client_version = s->version; 213 s->rwstate = SSL_NOTHING; 214 s->rstate = SSL_ST_READ_HEADER; 215 216 if (s->init_buf != NULL) { 217 BUF_MEM_free(s->init_buf); 218 s->init_buf = NULL; 219 } 220 221 ssl_clear_cipher_ctx(s); 222 ssl_clear_hash_ctx(&s->read_hash); 223 ssl_clear_hash_ctx(&s->write_hash); 224 225 s->first_packet = 0; 226 227 /* 228 * Check to see if we were changed into a different method, if 229 * so, revert back if we are not doing session-id reuse. 230 */ 231 if (!s->in_handshake && (s->session == NULL) && 232 (s->method != s->ctx->method)) { 233 s->method->ssl_free(s); 234 s->method = s->ctx->method; 235 if (!s->method->ssl_new(s)) 236 return (0); 237 } else 238 s->method->ssl_clear(s); 239 return (1); 240} 241 242/* Used to change an SSL_CTXs default SSL method type */ 243int 244SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 245{ 246 STACK_OF(SSL_CIPHER) *sk; 247 248 ctx->method = meth; 249 250 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 251 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 252 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 253 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 254 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 255 return (0); 256 } 257 return (1); 258} 259 260SSL * 261SSL_new(SSL_CTX *ctx) 262{ 263 SSL *s; 264 265 if (ctx == NULL) { 266 SSLerr(SSL_F_SSL_NEW, 267 SSL_R_NULL_SSL_CTX); 268 return (NULL); 269 } 270 if (ctx->method == NULL) { 271 SSLerr(SSL_F_SSL_NEW, 272 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 273 return (NULL); 274 } 275 276 s = calloc(1, sizeof(SSL)); 277 if (s == NULL) 278 goto err; 279 280 281 s->options = ctx->options; 282 s->mode = ctx->mode; 283 s->max_cert_list = ctx->max_cert_list; 284 285 if (ctx->cert != NULL) { 286 /* 287 * Earlier library versions used to copy the pointer to 288 * the CERT, not its contents; only when setting new 289 * parameters for the per-SSL copy, ssl_cert_new would be 290 * called (and the direct reference to the per-SSL_CTX 291 * settings would be lost, but those still were indirectly 292 * accessed for various purposes, and for that reason they 293 * used to be known as s->ctx->default_cert). 294 * Now we don't look at the SSL_CTX's CERT after having 295 * duplicated it once. 296 */ 297 s->cert = ssl_cert_dup(ctx->cert); 298 if (s->cert == NULL) 299 goto err; 300 } else 301 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 302 303 s->read_ahead = ctx->read_ahead; 304 s->msg_callback = ctx->msg_callback; 305 s->msg_callback_arg = ctx->msg_callback_arg; 306 s->verify_mode = ctx->verify_mode; 307 s->sid_ctx_length = ctx->sid_ctx_length; 308 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 309 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 310 s->verify_callback = ctx->default_verify_callback; 311 s->generate_session_id = ctx->generate_session_id; 312 313 s->param = X509_VERIFY_PARAM_new(); 314 if (!s->param) 315 goto err; 316 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 317 s->quiet_shutdown = ctx->quiet_shutdown; 318 s->max_send_fragment = ctx->max_send_fragment; 319 320 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 321 s->ctx = ctx; 322 s->tlsext_debug_cb = 0; 323 s->tlsext_debug_arg = NULL; 324 s->tlsext_ticket_expected = 0; 325 s->tlsext_status_type = -1; 326 s->tlsext_status_expected = 0; 327 s->tlsext_ocsp_ids = NULL; 328 s->tlsext_ocsp_exts = NULL; 329 s->tlsext_ocsp_resp = NULL; 330 s->tlsext_ocsp_resplen = -1; 331 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 332 s->initial_ctx = ctx; 333# ifndef OPENSSL_NO_NEXTPROTONEG 334 s->next_proto_negotiated = NULL; 335# endif 336 337 s->verify_result = X509_V_OK; 338 339 s->method = ctx->method; 340 341 if (!s->method->ssl_new(s)) 342 goto err; 343 344 s->references = 1; 345 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 346 347 SSL_clear(s); 348 349 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 350 351 352 return (s); 353err: 354 if (s != NULL) { 355 if (s->cert != NULL) 356 ssl_cert_free(s->cert); 357 SSL_CTX_free(s->ctx); /* decrement reference count */ 358 free(s); 359 } 360 SSLerr(SSL_F_SSL_NEW, 361 ERR_R_MALLOC_FAILURE); 362 return (NULL); 363} 364 365int 366SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 367 unsigned int sid_ctx_len) 368{ 369 if (sid_ctx_len > sizeof ctx->sid_ctx) { 370 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 371 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 372 return (0); 373 } 374 ctx->sid_ctx_length = sid_ctx_len; 375 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 376 377 return (1); 378} 379 380int 381SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 382 unsigned int sid_ctx_len) 383{ 384 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 385 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 386 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 387 return (0); 388 } 389 ssl->sid_ctx_length = sid_ctx_len; 390 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 391 392 return (1); 393} 394 395int 396SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 397{ 398 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 399 ctx->generate_session_id = cb; 400 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 401 return (1); 402} 403 404int 405SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 406{ 407 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 408 ssl->generate_session_id = cb; 409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 410 return (1); 411} 412 413int 414SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 415 unsigned int id_len) 416{ 417 /* 418 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 419 * shows how we can "construct" a session to give us the desired 420 * check - ie. to find if there's a session in the hash table 421 * that would conflict with any new session built out of this 422 * id/id_len and the ssl_version in use by this SSL. 423 */ 424 SSL_SESSION r, *p; 425 426 if (id_len > sizeof r.session_id) 427 return (0); 428 429 r.ssl_version = ssl->version; 430 r.session_id_length = id_len; 431 memcpy(r.session_id, id, id_len); 432 433 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 434 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 435 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 436 return (p != NULL); 437} 438 439int 440SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 441{ 442 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 443} 444 445int 446SSL_set_purpose(SSL *s, int purpose) 447{ 448 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 449} 450 451int 452SSL_CTX_set_trust(SSL_CTX *s, int trust) 453{ 454 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 455} 456 457int 458SSL_set_trust(SSL *s, int trust) 459{ 460 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 461} 462 463int 464SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 465{ 466 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 467} 468 469int 470SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 471{ 472 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 473} 474 475void 476SSL_free(SSL *s) 477{ 478 int i; 479 480 if (s == NULL) 481 return; 482 483 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 484 if (i > 0) 485 return; 486 487 if (s->param) 488 X509_VERIFY_PARAM_free(s->param); 489 490 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 491 492 if (s->bbio != NULL) { 493 /* If the buffering BIO is in place, pop it off */ 494 if (s->bbio == s->wbio) { 495 s->wbio = BIO_pop(s->wbio); 496 } 497 BIO_free(s->bbio); 498 s->bbio = NULL; 499 } 500 if (s->rbio != NULL) 501 BIO_free_all(s->rbio); 502 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 503 BIO_free_all(s->wbio); 504 505 if (s->init_buf != NULL) 506 BUF_MEM_free(s->init_buf); 507 508 /* add extra stuff */ 509 if (s->cipher_list != NULL) 510 sk_SSL_CIPHER_free(s->cipher_list); 511 if (s->cipher_list_by_id != NULL) 512 sk_SSL_CIPHER_free(s->cipher_list_by_id); 513 514 /* Make the next call work :-) */ 515 if (s->session != NULL) { 516 ssl_clear_bad_session(s); 517 SSL_SESSION_free(s->session); 518 } 519 520 ssl_clear_cipher_ctx(s); 521 ssl_clear_hash_ctx(&s->read_hash); 522 ssl_clear_hash_ctx(&s->write_hash); 523 524 if (s->cert != NULL) 525 ssl_cert_free(s->cert); 526 /* Free up if allocated */ 527 528 free(s->tlsext_hostname); 529 SSL_CTX_free(s->initial_ctx); 530 free(s->tlsext_ecpointformatlist); 531 free(s->tlsext_ellipticcurvelist); 532 if (s->tlsext_ocsp_exts) 533 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 534 X509_EXTENSION_free); 535 if (s->tlsext_ocsp_ids) 536 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 537 free(s->tlsext_ocsp_resp); 538 539 if (s->client_CA != NULL) 540 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 541 542 if (s->method != NULL) 543 s->method->ssl_free(s); 544 545 SSL_CTX_free(s->ctx); 546 547 548#ifndef OPENSSL_NO_NEXTPROTONEG 549 free(s->next_proto_negotiated); 550#endif 551 552#ifndef OPENSSL_NO_SRTP 553 if (s->srtp_profiles) 554 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 555#endif 556 557 free(s); 558} 559 560void 561SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 562{ 563 /* If the output buffering BIO is still in place, remove it */ 564 if (s->bbio != NULL) { 565 if (s->wbio == s->bbio) { 566 s->wbio = s->wbio->next_bio; 567 s->bbio->next_bio = NULL; 568 } 569 } 570 if ((s->rbio != NULL) && (s->rbio != rbio)) 571 BIO_free_all(s->rbio); 572 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 573 BIO_free_all(s->wbio); 574 s->rbio = rbio; 575 s->wbio = wbio; 576} 577 578BIO * 579SSL_get_rbio(const SSL *s) 580{ 581 return (s->rbio); 582} 583 584BIO * 585SSL_get_wbio(const SSL *s) 586{ 587 return (s->wbio); 588} 589 590int 591SSL_get_fd(const SSL *s) 592{ 593 return (SSL_get_rfd(s)); 594} 595 596int 597SSL_get_rfd(const SSL *s) 598{ 599 int ret = -1; 600 BIO *b, *r; 601 602 b = SSL_get_rbio(s); 603 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 604 if (r != NULL) 605 BIO_get_fd(r, &ret); 606 return (ret); 607} 608 609int 610SSL_get_wfd(const SSL *s) 611{ 612 int ret = -1; 613 BIO *b, *r; 614 615 b = SSL_get_wbio(s); 616 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 617 if (r != NULL) 618 BIO_get_fd(r, &ret); 619 return (ret); 620} 621 622int 623SSL_set_fd(SSL *s, int fd) 624{ 625 int ret = 0; 626 BIO *bio = NULL; 627 628 bio = BIO_new(BIO_s_socket()); 629 630 if (bio == NULL) { 631 SSLerr(SSL_F_SSL_SET_FD, 632 ERR_R_BUF_LIB); 633 goto err; 634 } 635 BIO_set_fd(bio, fd, BIO_NOCLOSE); 636 SSL_set_bio(s, bio, bio); 637 ret = 1; 638err: 639 return (ret); 640} 641 642int 643SSL_set_wfd(SSL *s, int fd) 644{ 645 int ret = 0; 646 BIO *bio = NULL; 647 648 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 649 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 650 bio = BIO_new(BIO_s_socket()); 651 652 if (bio == NULL) { 653 SSLerr(SSL_F_SSL_SET_WFD, 654 ERR_R_BUF_LIB); 655 goto err; 656 } 657 BIO_set_fd(bio, fd, BIO_NOCLOSE); 658 SSL_set_bio(s, SSL_get_rbio(s), bio); 659 } else 660 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 661 ret = 1; 662err: 663 return (ret); 664} 665 666int 667SSL_set_rfd(SSL *s, int fd) 668{ 669 int ret = 0; 670 BIO *bio = NULL; 671 672 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 673 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 674 bio = BIO_new(BIO_s_socket()); 675 676 if (bio == NULL) { 677 SSLerr(SSL_F_SSL_SET_RFD, 678 ERR_R_BUF_LIB); 679 goto err; 680 } 681 BIO_set_fd(bio, fd, BIO_NOCLOSE); 682 SSL_set_bio(s, bio, SSL_get_wbio(s)); 683 } else 684 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 685 ret = 1; 686err: 687 return (ret); 688} 689 690 691/* return length of latest Finished message we sent, copy to 'buf' */ 692size_t 693SSL_get_finished(const SSL *s, void *buf, size_t count) 694{ 695 size_t ret = 0; 696 697 if (s->s3 != NULL) { 698 ret = s->s3->tmp.finish_md_len; 699 if (count > ret) 700 count = ret; 701 memcpy(buf, s->s3->tmp.finish_md, count); 702 } 703 return (ret); 704} 705 706/* return length of latest Finished message we expected, copy to 'buf' */ 707size_t 708SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 709{ 710 size_t ret = 0; 711 712 if (s->s3 != NULL) { 713 ret = s->s3->tmp.peer_finish_md_len; 714 if (count > ret) 715 count = ret; 716 memcpy(buf, s->s3->tmp.peer_finish_md, count); 717 } 718 return (ret); 719} 720 721 722int 723SSL_get_verify_mode(const SSL *s) 724{ 725 return (s->verify_mode); 726} 727 728int 729SSL_get_verify_depth(const SSL *s) 730{ 731 return (X509_VERIFY_PARAM_get_depth(s->param)); 732} 733 734int 735(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 736{ 737 return (s->verify_callback); 738} 739 740int 741SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 742{ 743 return (ctx->verify_mode); 744} 745 746int 747SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 748{ 749 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 750} 751 752int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 753{ 754 return (ctx->default_verify_callback); 755} 756 757void 758SSL_set_verify(SSL *s, int mode, 759 int (*callback)(int ok, X509_STORE_CTX *ctx)) 760{ 761 s->verify_mode = mode; 762 if (callback != NULL) 763 s->verify_callback = callback; 764} 765 766void 767SSL_set_verify_depth(SSL *s, int depth) 768{ 769 X509_VERIFY_PARAM_set_depth(s->param, depth); 770} 771 772void 773SSL_set_read_ahead(SSL *s, int yes) 774{ 775 s->read_ahead = yes; 776} 777 778int 779SSL_get_read_ahead(const SSL *s) 780{ 781 return (s->read_ahead); 782} 783 784int 785SSL_pending(const SSL *s) 786{ 787 /* 788 * SSL_pending cannot work properly if read-ahead is enabled 789 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 790 * and it is impossible to fix since SSL_pending cannot report 791 * errors that may be observed while scanning the new data. 792 * (Note that SSL_pending() is often used as a boolean value, 793 * so we'd better not return -1.) 794 */ 795 return (s->method->ssl_pending(s)); 796} 797 798X509 * 799SSL_get_peer_certificate(const SSL *s) 800{ 801 X509 *r; 802 803 if ((s == NULL) || (s->session == NULL)) 804 r = NULL; 805 else 806 r = s->session->peer; 807 808 if (r == NULL) 809 return (r); 810 811 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 812 813 return (r); 814} 815 816STACK_OF(X509) * 817SSL_get_peer_cert_chain(const SSL *s) 818{ 819 STACK_OF(X509) *r; 820 821 if ((s == NULL) || (s->session == NULL) || 822 (s->session->sess_cert == NULL)) 823 r = NULL; 824 else 825 r = s->session->sess_cert->cert_chain; 826 827 /* 828 * If we are a client, cert_chain includes the peer's own 829 * certificate; 830 * if we are a server, it does not. 831 */ 832 return (r); 833} 834 835/* 836 * Now in theory, since the calling process own 't' it should be safe to 837 * modify. We need to be able to read f without being hassled 838 */ 839void 840SSL_copy_session_id(SSL *t, const SSL *f) 841{ 842 CERT *tmp; 843 844 /* Do we need to to SSL locking? */ 845 SSL_set_session(t, SSL_get_session(f)); 846 847 /* 848 * What if we are setup as SSLv2 but want to talk SSLv3 or 849 * vice-versa. 850 */ 851 if (t->method != f->method) { 852 t->method->ssl_free(t); /* cleanup current */ 853 t->method=f->method; /* change method */ 854 t->method->ssl_new(t); /* setup new */ 855 } 856 857 tmp = t->cert; 858 if (f->cert != NULL) { 859 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 860 t->cert = f->cert; 861 } else 862 t->cert = NULL; 863 if (tmp != NULL) 864 ssl_cert_free(tmp); 865 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 866} 867 868/* Fix this so it checks all the valid key/cert options */ 869int 870SSL_CTX_check_private_key(const SSL_CTX *ctx) 871{ 872 if ((ctx == NULL) || (ctx->cert == NULL) || 873 (ctx->cert->key->x509 == NULL)) { 874 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 875 SSL_R_NO_CERTIFICATE_ASSIGNED); 876 return (0); 877 } 878 if (ctx->cert->key->privatekey == NULL) { 879 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 880 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 881 return (0); 882 } 883 return (X509_check_private_key(ctx->cert->key->x509, 884 ctx->cert->key->privatekey)); 885} 886 887/* Fix this function so that it takes an optional type parameter */ 888int 889SSL_check_private_key(const SSL *ssl) 890{ 891 if (ssl == NULL) { 892 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 893 ERR_R_PASSED_NULL_PARAMETER); 894 return (0); 895 } 896 if (ssl->cert == NULL) { 897 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 898 SSL_R_NO_CERTIFICATE_ASSIGNED); 899 return (0); 900 } 901 if (ssl->cert->key->x509 == NULL) { 902 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 903 SSL_R_NO_CERTIFICATE_ASSIGNED); 904 return (0); 905 } 906 if (ssl->cert->key->privatekey == NULL) { 907 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 908 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 909 return (0); 910 } 911 return (X509_check_private_key(ssl->cert->key->x509, 912 ssl->cert->key->privatekey)); 913} 914 915int 916SSL_accept(SSL *s) 917{ 918 if (s->handshake_func == 0) 919 SSL_set_accept_state(s); /* Not properly initialized yet */ 920 921 return (s->method->ssl_accept(s)); 922} 923 924int 925SSL_connect(SSL *s) 926{ 927 if (s->handshake_func == 0) 928 SSL_set_connect_state(s); /* Not properly initialized yet */ 929 930 return (s->method->ssl_connect(s)); 931} 932 933long 934SSL_get_default_timeout(const SSL *s) 935{ 936 return (s->method->get_timeout()); 937} 938 939int 940SSL_read(SSL *s, void *buf, int num) 941{ 942 if (s->handshake_func == 0) { 943 SSLerr(SSL_F_SSL_READ, 944 SSL_R_UNINITIALIZED); 945 return (-1); 946 } 947 948 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 949 s->rwstate = SSL_NOTHING; 950 return (0); 951 } 952 return (s->method->ssl_read(s, buf, num)); 953} 954 955int 956SSL_peek(SSL *s, void *buf, int num) 957{ 958 if (s->handshake_func == 0) { 959 SSLerr(SSL_F_SSL_PEEK, 960 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 970int 971SSL_write(SSL *s, const void *buf, int num) 972{ 973 if (s->handshake_func == 0) { 974 SSLerr(SSL_F_SSL_WRITE, 975 SSL_R_UNINITIALIZED); 976 return (-1); 977 } 978 979 if (s->shutdown & SSL_SENT_SHUTDOWN) { 980 s->rwstate = SSL_NOTHING; 981 SSLerr(SSL_F_SSL_WRITE, 982 SSL_R_PROTOCOL_IS_SHUTDOWN); 983 return (-1); 984 } 985 return (s->method->ssl_write(s, buf, num)); 986} 987 988int 989SSL_shutdown(SSL *s) 990{ 991 /* 992 * Note that this function behaves differently from what one might 993 * expect. Return values are 0 for no success (yet), 994 * 1 for success; but calling it once is usually not enough, 995 * even if blocking I/O is used (see ssl3_shutdown). 996 */ 997 998 if (s->handshake_func == 0) { 999 SSLerr(SSL_F_SSL_SHUTDOWN, 1000 SSL_R_UNINITIALIZED); 1001 return (-1); 1002 } 1003 1004 if ((s != NULL) && !SSL_in_init(s)) 1005 return (s->method->ssl_shutdown(s)); 1006 else 1007 return (1); 1008} 1009 1010int 1011SSL_renegotiate(SSL *s) 1012{ 1013 if (s->renegotiate == 0) 1014 s->renegotiate = 1; 1015 1016 s->new_session = 1; 1017 1018 return (s->method->ssl_renegotiate(s)); 1019} 1020 1021int 1022SSL_renegotiate_abbreviated(SSL *s) 1023{ 1024 if (s->renegotiate == 0) 1025 s->renegotiate = 1; 1026 1027 s->new_session = 0; 1028 1029 return (s->method->ssl_renegotiate(s)); 1030} 1031 1032int 1033SSL_renegotiate_pending(SSL *s) 1034{ 1035 /* 1036 * Becomes true when negotiation is requested; 1037 * false again once a handshake has finished. 1038 */ 1039 return (s->renegotiate != 0); 1040} 1041 1042long 1043SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1044{ 1045 long l; 1046 1047 switch (cmd) { 1048 case SSL_CTRL_GET_READ_AHEAD: 1049 return (s->read_ahead); 1050 case SSL_CTRL_SET_READ_AHEAD: 1051 l = s->read_ahead; 1052 s->read_ahead = larg; 1053 return (l); 1054 1055 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1056 s->msg_callback_arg = parg; 1057 return (1); 1058 1059 case SSL_CTRL_OPTIONS: 1060 return (s->options|=larg); 1061 case SSL_CTRL_CLEAR_OPTIONS: 1062 return (s->options&=~larg); 1063 case SSL_CTRL_MODE: 1064 return (s->mode|=larg); 1065 case SSL_CTRL_CLEAR_MODE: 1066 return (s->mode &=~larg); 1067 case SSL_CTRL_GET_MAX_CERT_LIST: 1068 return (s->max_cert_list); 1069 case SSL_CTRL_SET_MAX_CERT_LIST: 1070 l = s->max_cert_list; 1071 s->max_cert_list = larg; 1072 return (l); 1073 case SSL_CTRL_SET_MTU: 1074#ifndef OPENSSL_NO_DTLS1 1075 if (larg < (long)dtls1_min_mtu()) 1076 return (0); 1077#endif 1078 if (SSL_IS_DTLS(s)) { 1079 s->d1->mtu = larg; 1080 return (larg); 1081 } 1082 return (0); 1083 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1084 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1085 return (0); 1086 s->max_send_fragment = larg; 1087 return (1); 1088 case SSL_CTRL_GET_RI_SUPPORT: 1089 if (s->s3) 1090 return (s->s3->send_connection_binding); 1091 else return (0); 1092 default: 1093 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1094 } 1095} 1096 1097long 1098SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1099{ 1100 switch (cmd) { 1101 case SSL_CTRL_SET_MSG_CALLBACK: 1102 s->msg_callback = (void (*)(int write_p, int version, 1103 int content_type, const void *buf, size_t len, 1104 SSL *ssl, void *arg))(fp); 1105 return (1); 1106 1107 default: 1108 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1109 } 1110} 1111 1112LHASH_OF(SSL_SESSION) * 1113SSL_CTX_sessions(SSL_CTX *ctx) 1114{ 1115 return (ctx->sessions); 1116} 1117 1118long 1119SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1120{ 1121 long l; 1122 1123 switch (cmd) { 1124 case SSL_CTRL_GET_READ_AHEAD: 1125 return (ctx->read_ahead); 1126 case SSL_CTRL_SET_READ_AHEAD: 1127 l = ctx->read_ahead; 1128 ctx->read_ahead = larg; 1129 return (l); 1130 1131 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1132 ctx->msg_callback_arg = parg; 1133 return (1); 1134 1135 case SSL_CTRL_GET_MAX_CERT_LIST: 1136 return (ctx->max_cert_list); 1137 case SSL_CTRL_SET_MAX_CERT_LIST: 1138 l = ctx->max_cert_list; 1139 ctx->max_cert_list = larg; 1140 return (l); 1141 1142 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1143 l = ctx->session_cache_size; 1144 ctx->session_cache_size = larg; 1145 return (l); 1146 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1147 return (ctx->session_cache_size); 1148 case SSL_CTRL_SET_SESS_CACHE_MODE: 1149 l = ctx->session_cache_mode; 1150 ctx->session_cache_mode = larg; 1151 return (l); 1152 case SSL_CTRL_GET_SESS_CACHE_MODE: 1153 return (ctx->session_cache_mode); 1154 1155 case SSL_CTRL_SESS_NUMBER: 1156 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1157 case SSL_CTRL_SESS_CONNECT: 1158 return (ctx->stats.sess_connect); 1159 case SSL_CTRL_SESS_CONNECT_GOOD: 1160 return (ctx->stats.sess_connect_good); 1161 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1162 return (ctx->stats.sess_connect_renegotiate); 1163 case SSL_CTRL_SESS_ACCEPT: 1164 return (ctx->stats.sess_accept); 1165 case SSL_CTRL_SESS_ACCEPT_GOOD: 1166 return (ctx->stats.sess_accept_good); 1167 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1168 return (ctx->stats.sess_accept_renegotiate); 1169 case SSL_CTRL_SESS_HIT: 1170 return (ctx->stats.sess_hit); 1171 case SSL_CTRL_SESS_CB_HIT: 1172 return (ctx->stats.sess_cb_hit); 1173 case SSL_CTRL_SESS_MISSES: 1174 return (ctx->stats.sess_miss); 1175 case SSL_CTRL_SESS_TIMEOUTS: 1176 return (ctx->stats.sess_timeout); 1177 case SSL_CTRL_SESS_CACHE_FULL: 1178 return (ctx->stats.sess_cache_full); 1179 case SSL_CTRL_OPTIONS: 1180 return (ctx->options|=larg); 1181 case SSL_CTRL_CLEAR_OPTIONS: 1182 return (ctx->options&=~larg); 1183 case SSL_CTRL_MODE: 1184 return (ctx->mode|=larg); 1185 case SSL_CTRL_CLEAR_MODE: 1186 return (ctx->mode&=~larg); 1187 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1188 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1189 return (0); 1190 ctx->max_send_fragment = larg; 1191 return (1); 1192 default: 1193 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1194 } 1195} 1196 1197long 1198SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1199{ 1200 switch (cmd) { 1201 case SSL_CTRL_SET_MSG_CALLBACK: 1202 ctx->msg_callback = (void (*)(int write_p, int version, 1203 int content_type, const void *buf, size_t len, SSL *ssl, 1204 void *arg))(fp); 1205 return (1); 1206 1207 default: 1208 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1209 } 1210} 1211 1212int 1213ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1214{ 1215 long l; 1216 1217 l = a->id - b->id; 1218 if (l == 0L) 1219 return (0); 1220 else 1221 return ((l > 0) ? 1:-1); 1222} 1223 1224int 1225ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1226 const SSL_CIPHER * const *bp) 1227{ 1228 long l; 1229 1230 l = (*ap)->id - (*bp)->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235} 1236 1237/* 1238 * Return a STACK of the ciphers available for the SSL and in order of 1239 * preference. 1240 */ 1241STACK_OF(SSL_CIPHER) * 1242SSL_get_ciphers(const SSL *s) 1243{ 1244 if (s != NULL) { 1245 if (s->cipher_list != NULL) { 1246 return (s->cipher_list); 1247 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1248 return (s->ctx->cipher_list); 1249 } 1250 } 1251 return (NULL); 1252} 1253 1254/* 1255 * Return a STACK of the ciphers available for the SSL and in order of 1256 * algorithm id. 1257 */ 1258STACK_OF(SSL_CIPHER) * 1259ssl_get_ciphers_by_id(SSL *s) 1260{ 1261 if (s != NULL) { 1262 if (s->cipher_list_by_id != NULL) { 1263 return (s->cipher_list_by_id); 1264 } else if ((s->ctx != NULL) && 1265 (s->ctx->cipher_list_by_id != NULL)) { 1266 return (s->ctx->cipher_list_by_id); 1267 } 1268 } 1269 return (NULL); 1270} 1271 1272/* The old interface to get the same thing as SSL_get_ciphers(). */ 1273const char * 1274SSL_get_cipher_list(const SSL *s, int n) 1275{ 1276 SSL_CIPHER *c; 1277 STACK_OF(SSL_CIPHER) *sk; 1278 1279 if (s == NULL) 1280 return (NULL); 1281 sk = SSL_get_ciphers(s); 1282 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1283 return (NULL); 1284 c = sk_SSL_CIPHER_value(sk, n); 1285 if (c == NULL) 1286 return (NULL); 1287 return (c->name); 1288} 1289 1290/* Specify the ciphers to be used by default by the SSL_CTX. */ 1291int 1292SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1293{ 1294 STACK_OF(SSL_CIPHER) *sk; 1295 1296 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1297 &ctx->cipher_list_by_id, str); 1298 /* 1299 * ssl_create_cipher_list may return an empty stack if it 1300 * was unable to find a cipher matching the given rule string 1301 * (for example if the rule string specifies a cipher which 1302 * has been disabled). This is not an error as far as 1303 * ssl_create_cipher_list is concerned, and hence 1304 * ctx->cipher_list and ctx->cipher_list_by_id has been 1305 * updated. 1306 */ 1307 if (sk == NULL) 1308 return (0); 1309 else if (sk_SSL_CIPHER_num(sk) == 0) { 1310 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1311 SSL_R_NO_CIPHER_MATCH); 1312 return (0); 1313 } 1314 return (1); 1315} 1316 1317/* Specify the ciphers to be used by the SSL. */ 1318int 1319SSL_set_cipher_list(SSL *s, const char *str) 1320{ 1321 STACK_OF(SSL_CIPHER) *sk; 1322 1323 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1324 &s->cipher_list_by_id, str); 1325 /* see comment in SSL_CTX_set_cipher_list */ 1326 if (sk == NULL) 1327 return (0); 1328 else if (sk_SSL_CIPHER_num(sk) == 0) { 1329 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1330 SSL_R_NO_CIPHER_MATCH); 1331 return (0); 1332 } 1333 return (1); 1334} 1335 1336/* works well for SSLv2, not so good for SSLv3 */ 1337char * 1338SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1339{ 1340 char *end; 1341 STACK_OF(SSL_CIPHER) *sk; 1342 SSL_CIPHER *c; 1343 size_t curlen = 0; 1344 int i; 1345 1346 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1347 (len < 2)) 1348 return (NULL); 1349 1350 sk = s->session->ciphers; 1351 buf[0] = '\0'; 1352 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1353 c = sk_SSL_CIPHER_value(sk, i); 1354 end = buf + curlen; 1355 if (strlcat(buf, c->name, len) >= len || 1356 (curlen = strlcat(buf, ":", len)) >= len) { 1357 /* remove truncated cipher from list */ 1358 *end = '\0'; 1359 break; 1360 } 1361 } 1362 /* remove trailing colon */ 1363 if ((end = strrchr(buf, ':')) != NULL) 1364 *end = '\0'; 1365 return (buf); 1366} 1367 1368int 1369ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p) 1370{ 1371 int i; 1372 SSL_CIPHER *c; 1373 unsigned char *q; 1374 1375 if (sk == NULL) 1376 return (0); 1377 q = p; 1378 1379 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1380 c = sk_SSL_CIPHER_value(sk, i); 1381 1382 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1383 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1384 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1385 continue; 1386 1387 s2n(ssl3_cipher_get_value(c), p); 1388 } 1389 1390 /* 1391 * If p == q, no ciphers and caller indicates an error. Otherwise 1392 * add SCSV if not renegotiating. 1393 */ 1394 if (p != q && !s->renegotiate) { 1395 static SSL_CIPHER scsv = { 1396 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1397 }; 1398 s2n(ssl3_cipher_get_value(&scsv), p); 1399 } 1400 1401 return (p - q); 1402} 1403 1404STACK_OF(SSL_CIPHER) * 1405ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1406 STACK_OF(SSL_CIPHER) **skp) 1407{ 1408 const SSL_CIPHER *c; 1409 STACK_OF(SSL_CIPHER) *sk; 1410 int i; 1411 unsigned int cipher_id; 1412 uint16_t cipher_value; 1413 1414 if (s->s3) 1415 s->s3->send_connection_binding = 0; 1416 1417 if ((num % SSL3_CIPHER_VALUE_SIZE) != 0) { 1418 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1419 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1420 return (NULL); 1421 } 1422 if (skp == NULL || *skp == NULL) { 1423 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1424 if (sk == NULL) 1425 goto err; 1426 } else { 1427 sk = *skp; 1428 sk_SSL_CIPHER_zero(sk); 1429 } 1430 1431 for (i = 0; i < num; i += SSL3_CIPHER_VALUE_SIZE) { 1432 n2s(p, cipher_value); 1433 cipher_id = SSL3_CK_ID | cipher_value; 1434 1435 /* Check for SCSV */ 1436 if (s->s3 && cipher_id == SSL3_CK_SCSV) { 1437 /* SCSV is fatal if renegotiating. */ 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 c = ssl3_get_cipher_by_id(cipher_id); 1451 if (c != NULL) { 1452 if (!sk_SSL_CIPHER_push(sk, c)) { 1453 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1454 ERR_R_MALLOC_FAILURE); 1455 goto err; 1456 } 1457 } 1458 } 1459 1460 if (skp != NULL) 1461 *skp = sk; 1462 return (sk); 1463 1464err: 1465 if (skp == NULL || *skp == NULL) 1466 sk_SSL_CIPHER_free(sk); 1467 return (NULL); 1468} 1469 1470 1471/* 1472 * Return a servername extension value if provided in Client Hello, or NULL. 1473 * So far, only host_name types are defined (RFC 3546). 1474 */ 1475const char * 1476SSL_get_servername(const SSL *s, const int type) 1477{ 1478 if (type != TLSEXT_NAMETYPE_host_name) 1479 return (NULL); 1480 1481 return (s->session && !s->tlsext_hostname ? 1482 s->session->tlsext_hostname : 1483 s->tlsext_hostname); 1484} 1485 1486int 1487SSL_get_servername_type(const SSL *s) 1488{ 1489 if (s->session && 1490 (!s->tlsext_hostname ? 1491 s->session->tlsext_hostname : s->tlsext_hostname)) 1492 return (TLSEXT_NAMETYPE_host_name); 1493 return (-1); 1494} 1495 1496# ifndef OPENSSL_NO_NEXTPROTONEG 1497/* 1498 * SSL_select_next_proto implements the standard protocol selection. It is 1499 * expected that this function is called from the callback set by 1500 * SSL_CTX_set_next_proto_select_cb. 1501 * 1502 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1503 * strings. The length byte itself is not included in the length. A byte 1504 * string of length 0 is invalid. No byte string may be truncated. 1505 * 1506 * The current, but experimental algorithm for selecting the protocol is: 1507 * 1508 * 1) If the server doesn't support NPN then this is indicated to the 1509 * callback. In this case, the client application has to abort the connection 1510 * or have a default application level protocol. 1511 * 1512 * 2) If the server supports NPN, but advertises an empty list then the 1513 * client selects the first protcol in its list, but indicates via the 1514 * API that this fallback case was enacted. 1515 * 1516 * 3) Otherwise, the client finds the first protocol in the server's list 1517 * that it supports and selects this protocol. This is because it's 1518 * assumed that the server has better information about which protocol 1519 * a client should use. 1520 * 1521 * 4) If the client doesn't support any of the server's advertised 1522 * protocols, then this is treated the same as case 2. 1523 * 1524 * It returns either 1525 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1526 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1527 */ 1528int 1529SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1530 const unsigned char *server, unsigned int server_len, 1531 const unsigned char *client, unsigned int client_len) 1532{ 1533 unsigned int i, j; 1534 const unsigned char *result; 1535 int status = OPENSSL_NPN_UNSUPPORTED; 1536 1537 /* 1538 * For each protocol in server preference order, 1539 * see if we support it. 1540 */ 1541 for (i = 0; i < server_len; ) { 1542 for (j = 0; j < client_len; ) { 1543 if (server[i] == client[j] && 1544 memcmp(&server[i + 1], 1545 &client[j + 1], server[i]) == 0) { 1546 /* We found a match */ 1547 result = &server[i]; 1548 status = OPENSSL_NPN_NEGOTIATED; 1549 goto found; 1550 } 1551 j += client[j]; 1552 j++; 1553 } 1554 i += server[i]; 1555 i++; 1556 } 1557 1558 /* There's no overlap between our protocols and the server's list. */ 1559 result = client; 1560 status = OPENSSL_NPN_NO_OVERLAP; 1561 1562found: 1563 *out = (unsigned char *) result + 1; 1564 *outlen = result[0]; 1565 return (status); 1566} 1567 1568/* 1569 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1570 * requested protocol for this connection and returns 0. If the client didn't 1571 * request any protocol, then *data is set to NULL. 1572 * 1573 * Note that the client can request any protocol it chooses. The value returned 1574 * from this function need not be a member of the list of supported protocols 1575 * provided by the callback. 1576 */ 1577void 1578SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1579 unsigned *len) 1580{ 1581 *data = s->next_proto_negotiated; 1582 if (!*data) { 1583 *len = 0; 1584 } else { 1585 *len = s->next_proto_negotiated_len; 1586 } 1587} 1588 1589/* 1590 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1591 * TLS server needs a list of supported protocols for Next Protocol 1592 * Negotiation. The returned list must be in wire format. The list is returned 1593 * by setting |out| to point to it and |outlen| to its length. This memory will 1594 * not be modified, but one should assume that the SSL* keeps a reference to 1595 * it. 1596 * 1597 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1598 * Otherwise, no such extension will be included in the ServerHello. 1599 */ 1600void 1601SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1602 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1603{ 1604 ctx->next_protos_advertised_cb = cb; 1605 ctx->next_protos_advertised_cb_arg = arg; 1606} 1607 1608/* 1609 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1610 * client needs to select a protocol from the server's provided list. |out| 1611 * must be set to point to the selected protocol (which may be within |in|). 1612 * The length of the protocol name must be written into |outlen|. The server's 1613 * advertised protocols are provided in |in| and |inlen|. The callback can 1614 * assume that |in| is syntactically valid. 1615 * 1616 * The client must select a protocol. It is fatal to the connection if this 1617 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1618 */ 1619void 1620SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1621 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1622 unsigned int inlen, void *arg), void *arg) 1623{ 1624 ctx->next_proto_select_cb = cb; 1625 ctx->next_proto_select_cb_arg = arg; 1626} 1627# endif 1628 1629int 1630SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1631 const char *label, size_t llen, const unsigned char *p, size_t plen, 1632 int use_context) 1633{ 1634 if (s->version < TLS1_VERSION) 1635 return (-1); 1636 1637 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1638 label, llen, p, plen, use_context)); 1639} 1640 1641static unsigned long 1642ssl_session_hash(const SSL_SESSION *a) 1643{ 1644 unsigned long l; 1645 1646 l = (unsigned long) 1647 ((unsigned int) a->session_id[0] )| 1648 ((unsigned int) a->session_id[1]<< 8L)| 1649 ((unsigned long)a->session_id[2]<<16L)| 1650 ((unsigned long)a->session_id[3]<<24L); 1651 return (l); 1652} 1653 1654/* 1655 * NB: If this function (or indeed the hash function which uses a sort of 1656 * coarser function than this one) is changed, ensure 1657 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1658 * able to construct an SSL_SESSION that will collide with any existing session 1659 * with a matching session ID. 1660 */ 1661static int 1662ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1663{ 1664 if (a->ssl_version != b->ssl_version) 1665 return (1); 1666 if (a->session_id_length != b->session_id_length) 1667 return (1); 1668 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1669 return (1); 1670 return (0); 1671} 1672 1673/* 1674 * These wrapper functions should remain rather than redeclaring 1675 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1676 * variable. The reason is that the functions aren't static, they're exposed via 1677 * ssl.h. 1678 */ 1679static 1680IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1681static 1682IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1683 1684SSL_CTX * 1685SSL_CTX_new(const SSL_METHOD *meth) 1686{ 1687 SSL_CTX *ret = NULL; 1688 1689 if (meth == NULL) { 1690 SSLerr(SSL_F_SSL_CTX_NEW, 1691 SSL_R_NULL_SSL_METHOD_PASSED); 1692 return (NULL); 1693 } 1694 1695 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1696 SSLerr(SSL_F_SSL_CTX_NEW, 1697 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1698 goto err; 1699 } 1700 ret = calloc(1, sizeof(SSL_CTX)); 1701 if (ret == NULL) 1702 goto err; 1703 1704 ret->method = meth; 1705 1706 ret->cert_store = NULL; 1707 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1708 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1709 ret->session_cache_head = NULL; 1710 ret->session_cache_tail = NULL; 1711 1712 /* We take the system default */ 1713 ret->session_timeout = meth->get_timeout(); 1714 1715 ret->new_session_cb = 0; 1716 ret->remove_session_cb = 0; 1717 ret->get_session_cb = 0; 1718 ret->generate_session_id = 0; 1719 1720 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1721 1722 ret->references = 1; 1723 ret->quiet_shutdown = 0; 1724 1725 ret->info_callback = NULL; 1726 1727 ret->app_verify_callback = 0; 1728 ret->app_verify_arg = NULL; 1729 1730 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1731 ret->read_ahead = 0; 1732 ret->msg_callback = 0; 1733 ret->msg_callback_arg = NULL; 1734 ret->verify_mode = SSL_VERIFY_NONE; 1735 ret->sid_ctx_length = 0; 1736 ret->default_verify_callback = NULL; 1737 if ((ret->cert = ssl_cert_new()) == NULL) 1738 goto err; 1739 1740 ret->default_passwd_callback = 0; 1741 ret->default_passwd_callback_userdata = NULL; 1742 ret->client_cert_cb = 0; 1743 ret->app_gen_cookie_cb = 0; 1744 ret->app_verify_cookie_cb = 0; 1745 1746 ret->sessions = lh_SSL_SESSION_new(); 1747 if (ret->sessions == NULL) 1748 goto err; 1749 ret->cert_store = X509_STORE_new(); 1750 if (ret->cert_store == NULL) 1751 goto err; 1752 1753 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1754 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1755 if (ret->cipher_list == NULL || 1756 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1757 SSLerr(SSL_F_SSL_CTX_NEW, 1758 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1759 goto err2; 1760 } 1761 1762 ret->param = X509_VERIFY_PARAM_new(); 1763 if (!ret->param) 1764 goto err; 1765 1766 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1767 SSLerr(SSL_F_SSL_CTX_NEW, 1768 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1769 goto err2; 1770 } 1771 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1772 SSLerr(SSL_F_SSL_CTX_NEW, 1773 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1774 goto err2; 1775 } 1776 1777 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1778 goto err; 1779 1780 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1781 1782 ret->extra_certs = NULL; 1783 1784 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1785 1786 ret->tlsext_servername_callback = 0; 1787 ret->tlsext_servername_arg = NULL; 1788 1789 /* Setup RFC4507 ticket keys */ 1790 arc4random_buf(ret->tlsext_tick_key_name, 16); 1791 arc4random_buf(ret->tlsext_tick_hmac_key, 16); 1792 arc4random_buf(ret->tlsext_tick_aes_key, 16); 1793 1794 ret->tlsext_status_cb = 0; 1795 ret->tlsext_status_arg = NULL; 1796 1797# ifndef OPENSSL_NO_NEXTPROTONEG 1798 ret->next_protos_advertised_cb = 0; 1799 ret->next_proto_select_cb = 0; 1800# endif 1801#ifndef OPENSSL_NO_ENGINE 1802 ret->client_cert_engine = NULL; 1803#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1804#define eng_strx(x) #x 1805#define eng_str(x) eng_strx(x) 1806 /* Use specific client engine automatically... ignore errors */ 1807 { 1808 ENGINE *eng; 1809 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1810 if (!eng) { 1811 ERR_clear_error(); 1812 ENGINE_load_builtin_engines(); 1813 eng = ENGINE_by_id(eng_str( 1814 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1815 } 1816 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1817 ERR_clear_error(); 1818 } 1819#endif 1820#endif 1821 /* 1822 * Default is to connect to non-RI servers. When RI is more widely 1823 * deployed might change this. 1824 */ 1825 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1826 1827 /* Disable SSLv3 by default. */ 1828 ret->options |= SSL_OP_NO_SSLv3; 1829 1830 return (ret); 1831err: 1832 SSLerr(SSL_F_SSL_CTX_NEW, 1833 ERR_R_MALLOC_FAILURE); 1834err2: 1835 SSL_CTX_free(ret); 1836 return (NULL); 1837} 1838 1839void 1840SSL_CTX_free(SSL_CTX *a) 1841{ 1842 int i; 1843 1844 if (a == NULL) 1845 return; 1846 1847 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1848 if (i > 0) 1849 return; 1850 1851 if (a->param) 1852 X509_VERIFY_PARAM_free(a->param); 1853 1854 /* 1855 * Free internal session cache. However: the remove_cb() may reference 1856 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1857 * after the sessions were flushed. 1858 * As the ex_data handling routines might also touch the session cache, 1859 * the most secure solution seems to be: empty (flush) the cache, then 1860 * free ex_data, then finally free the cache. 1861 * (See ticket [openssl.org #212].) 1862 */ 1863 if (a->sessions != NULL) 1864 SSL_CTX_flush_sessions(a, 0); 1865 1866 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1867 1868 if (a->sessions != NULL) 1869 lh_SSL_SESSION_free(a->sessions); 1870 1871 if (a->cert_store != NULL) 1872 X509_STORE_free(a->cert_store); 1873 if (a->cipher_list != NULL) 1874 sk_SSL_CIPHER_free(a->cipher_list); 1875 if (a->cipher_list_by_id != NULL) 1876 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1877 if (a->cert != NULL) 1878 ssl_cert_free(a->cert); 1879 if (a->client_CA != NULL) 1880 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1881 if (a->extra_certs != NULL) 1882 sk_X509_pop_free(a->extra_certs, X509_free); 1883 1884#ifndef OPENSSL_NO_SRTP 1885 if (a->srtp_profiles) 1886 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1887#endif 1888 1889#ifndef OPENSSL_NO_ENGINE 1890 if (a->client_cert_engine) 1891 ENGINE_finish(a->client_cert_engine); 1892#endif 1893 1894 free(a); 1895} 1896 1897void 1898SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1899{ 1900 ctx->default_passwd_callback = cb; 1901} 1902 1903void 1904SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1905{ 1906 ctx->default_passwd_callback_userdata = u; 1907} 1908 1909void 1910SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1911 void *), void *arg) 1912{ 1913 ctx->app_verify_callback = cb; 1914 ctx->app_verify_arg = arg; 1915} 1916 1917void 1918SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1919{ 1920 ctx->verify_mode = mode; 1921 ctx->default_verify_callback = cb; 1922} 1923 1924void 1925SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1926{ 1927 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1928} 1929 1930void 1931ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1932{ 1933 CERT_PKEY *cpk; 1934 int rsa_enc, rsa_sign, dh_tmp, dsa_sign; 1935 unsigned long mask_k, mask_a; 1936 int have_ecc_cert, ecdh_ok, ecdsa_ok; 1937 int have_ecdh_tmp; 1938 X509 *x = NULL; 1939 EVP_PKEY *ecc_pkey = NULL; 1940 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1941 1942 if (c == NULL) 1943 return; 1944 1945 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1946 1947 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL || 1948 c->ecdh_tmp_auto != 0); 1949 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1950 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1951 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1952 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1953 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1954 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1955/* FIX THIS EAY EAY EAY */ 1956 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1957 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1958 mask_k = 0; 1959 mask_a = 0; 1960 1961 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1962 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1963 mask_k |= SSL_kGOST; 1964 mask_a |= SSL_aGOST01; 1965 } 1966 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1967 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1968 mask_k |= SSL_kGOST; 1969 mask_a |= SSL_aGOST94; 1970 } 1971 1972 if (rsa_enc) 1973 mask_k|=SSL_kRSA; 1974 1975 if (dh_tmp) 1976 mask_k|=SSL_kDHE; 1977 1978 if (rsa_enc || rsa_sign) 1979 mask_a|=SSL_aRSA; 1980 1981 if (dsa_sign) 1982 mask_a|=SSL_aDSS; 1983 1984 mask_a|=SSL_aNULL; 1985 1986 /* 1987 * An ECC certificate may be usable for ECDH and/or 1988 * ECDSA cipher suites depending on the key usage extension. 1989 */ 1990 if (have_ecc_cert) { 1991 /* This call populates extension flags (ex_flags) */ 1992 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1993 X509_check_purpose(x, -1, 0); 1994 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1995 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 1996 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1997 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 1998 ecc_pkey = X509_get_pubkey(x); 1999 EVP_PKEY_free(ecc_pkey); 2000 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2001 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2002 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2003 } 2004 if (ecdh_ok) { 2005 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2006 mask_k|=SSL_kECDHr; 2007 mask_a|=SSL_aECDH; 2008 } 2009 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2010 mask_k|=SSL_kECDHe; 2011 mask_a|=SSL_aECDH; 2012 } 2013 } 2014 if (ecdsa_ok) 2015 mask_a|=SSL_aECDSA; 2016 } 2017 2018 if (have_ecdh_tmp) { 2019 mask_k|=SSL_kECDHE; 2020 } 2021 2022 2023 c->mask_k = mask_k; 2024 c->mask_a = mask_a; 2025 c->valid = 1; 2026} 2027 2028/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2029#define ku_reject(x, usage) \ 2030 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2031 2032 2033int 2034ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2035{ 2036 unsigned long alg_k, alg_a; 2037 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2038 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2039 2040 alg_k = cs->algorithm_mkey; 2041 alg_a = cs->algorithm_auth; 2042 2043 /* This call populates the ex_flags field correctly */ 2044 X509_check_purpose(x, -1, 0); 2045 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2046 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2047 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2048 } 2049 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2050 /* key usage, if present, must allow key agreement */ 2051 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2052 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2053 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2054 return (0); 2055 } 2056 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2057 TLS1_2_VERSION) { 2058 /* signature alg must be ECDSA */ 2059 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2060 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2061 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2062 return (0); 2063 } 2064 } 2065 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2066 TLS1_2_VERSION) { 2067 /* signature alg must be RSA */ 2068 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2069 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2070 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2071 return (0); 2072 } 2073 } 2074 } 2075 if (alg_a & SSL_aECDSA) { 2076 /* key usage, if present, must allow signing */ 2077 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2078 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2079 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2080 return (0); 2081 } 2082 } 2083 2084 return (1); 2085 /* all checks are ok */ 2086} 2087 2088 2089/* THIS NEEDS CLEANING UP */ 2090CERT_PKEY * 2091ssl_get_server_send_pkey(const SSL *s) 2092{ 2093 unsigned long alg_k, alg_a; 2094 CERT *c; 2095 int i; 2096 2097 c = s->cert; 2098 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2099 2100 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2101 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2102 2103 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2104 /* 2105 * We don't need to look at SSL_kECDHE 2106 * since no certificate is needed for 2107 * anon ECDH and for authenticated 2108 * ECDHE, the check for the auth 2109 * algorithm will set i correctly 2110 * NOTE: For ECDH-RSA, we need an ECC 2111 * not an RSA cert but for EECDH-RSA 2112 * we need an RSA cert. Placing the 2113 * checks for SSL_kECDH before RSA 2114 * checks ensures the correct cert is chosen. 2115 */ 2116 i = SSL_PKEY_ECC; 2117 } else if (alg_a & SSL_aECDSA) { 2118 i = SSL_PKEY_ECC; 2119 } else if (alg_a & SSL_aDSS) { 2120 i = SSL_PKEY_DSA_SIGN; 2121 } else if (alg_a & SSL_aRSA) { 2122 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2123 i = SSL_PKEY_RSA_SIGN; 2124 else 2125 i = SSL_PKEY_RSA_ENC; 2126 } else if (alg_a & SSL_aGOST94) { 2127 i = SSL_PKEY_GOST94; 2128 } else if (alg_a & SSL_aGOST01) { 2129 i = SSL_PKEY_GOST01; 2130 } else { /* if (alg_a & SSL_aNULL) */ 2131 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2132 return (NULL); 2133 } 2134 2135 return (c->pkeys + i); 2136} 2137 2138X509 * 2139ssl_get_server_send_cert(const SSL *s) 2140{ 2141 CERT_PKEY *cpk; 2142 2143 cpk = ssl_get_server_send_pkey(s); 2144 if (!cpk) 2145 return (NULL); 2146 return (cpk->x509); 2147} 2148 2149EVP_PKEY * 2150ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2151{ 2152 unsigned long alg_a; 2153 CERT *c; 2154 int idx = -1; 2155 2156 alg_a = cipher->algorithm_auth; 2157 c = s->cert; 2158 2159 if ((alg_a & SSL_aDSS) && 2160 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2161 idx = SSL_PKEY_DSA_SIGN; 2162 else if (alg_a & SSL_aRSA) { 2163 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2164 idx = SSL_PKEY_RSA_SIGN; 2165 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2166 idx = SSL_PKEY_RSA_ENC; 2167 } else if ((alg_a & SSL_aECDSA) && 2168 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2169 idx = SSL_PKEY_ECC; 2170 if (idx == -1) { 2171 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2172 return (NULL); 2173 } 2174 if (pmd) 2175 *pmd = c->pkeys[idx].digest; 2176 return (c->pkeys[idx].privatekey); 2177} 2178 2179void 2180ssl_update_cache(SSL *s, int mode) 2181{ 2182 int i; 2183 2184 /* 2185 * If the session_id_length is 0, we are not supposed to cache it, 2186 * and it would be rather hard to do anyway :-) 2187 */ 2188 if (s->session->session_id_length == 0) 2189 return; 2190 2191 i = s->session_ctx->session_cache_mode; 2192 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2193 || SSL_CTX_add_session(s->session_ctx, s->session)) 2194 && (s->session_ctx->new_session_cb != NULL)) { 2195 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2196 if (!s->session_ctx->new_session_cb(s, s->session)) 2197 SSL_SESSION_free(s->session); 2198 } 2199 2200 /* auto flush every 255 connections */ 2201 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2202 ((i & mode) == mode)) { 2203 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2204 s->session_ctx->stats.sess_connect_good : 2205 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2206 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2207 } 2208 } 2209} 2210 2211const SSL_METHOD * 2212SSL_get_ssl_method(SSL *s) 2213{ 2214 return (s->method); 2215} 2216 2217int 2218SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2219{ 2220 int conn = -1; 2221 int ret = 1; 2222 2223 if (s->method != meth) { 2224 if (s->handshake_func != NULL) 2225 conn = (s->handshake_func == s->method->ssl_connect); 2226 2227 if (s->method->version == meth->version) 2228 s->method = meth; 2229 else { 2230 s->method->ssl_free(s); 2231 s->method = meth; 2232 ret = s->method->ssl_new(s); 2233 } 2234 2235 if (conn == 1) 2236 s->handshake_func = meth->ssl_connect; 2237 else if (conn == 0) 2238 s->handshake_func = meth->ssl_accept; 2239 } 2240 return (ret); 2241} 2242 2243int 2244SSL_get_error(const SSL *s, int i) 2245{ 2246 int reason; 2247 unsigned long l; 2248 BIO *bio; 2249 2250 if (i > 0) 2251 return (SSL_ERROR_NONE); 2252 2253 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2254 * etc, where we do encode the error */ 2255 if ((l = ERR_peek_error()) != 0) { 2256 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2257 return (SSL_ERROR_SYSCALL); 2258 else 2259 return (SSL_ERROR_SSL); 2260 } 2261 2262 if ((i < 0) && SSL_want_read(s)) { 2263 bio = SSL_get_rbio(s); 2264 if (BIO_should_read(bio)) { 2265 return (SSL_ERROR_WANT_READ); 2266 } else if (BIO_should_write(bio)) { 2267 /* 2268 * This one doesn't make too much sense... We never 2269 * try to write to the rbio, and an application 2270 * program where rbio and wbio are separate couldn't 2271 * even know what it should wait for. However if we 2272 * ever set s->rwstate incorrectly (so that we have 2273 * SSL_want_read(s) instead of SSL_want_write(s)) 2274 * and rbio and wbio *are* the same, this test works 2275 * around that bug; so it might be safer to keep it. 2276 */ 2277 return (SSL_ERROR_WANT_WRITE); 2278 } else if (BIO_should_io_special(bio)) { 2279 reason = BIO_get_retry_reason(bio); 2280 if (reason == BIO_RR_CONNECT) 2281 return (SSL_ERROR_WANT_CONNECT); 2282 else if (reason == BIO_RR_ACCEPT) 2283 return (SSL_ERROR_WANT_ACCEPT); 2284 else 2285 return (SSL_ERROR_SYSCALL); /* unknown */ 2286 } 2287 } 2288 2289 if ((i < 0) && SSL_want_write(s)) { 2290 bio = SSL_get_wbio(s); 2291 if (BIO_should_write(bio)) { 2292 return (SSL_ERROR_WANT_WRITE); 2293 } else if (BIO_should_read(bio)) { 2294 /* 2295 * See above (SSL_want_read(s) with 2296 * BIO_should_write(bio)) 2297 */ 2298 return (SSL_ERROR_WANT_READ); 2299 } else if (BIO_should_io_special(bio)) { 2300 reason = BIO_get_retry_reason(bio); 2301 if (reason == BIO_RR_CONNECT) 2302 return (SSL_ERROR_WANT_CONNECT); 2303 else if (reason == BIO_RR_ACCEPT) 2304 return (SSL_ERROR_WANT_ACCEPT); 2305 else 2306 return (SSL_ERROR_SYSCALL); 2307 } 2308 } 2309 if ((i < 0) && SSL_want_x509_lookup(s)) { 2310 return (SSL_ERROR_WANT_X509_LOOKUP); 2311 } 2312 2313 if (i == 0) { 2314 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2315 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2316 return (SSL_ERROR_ZERO_RETURN); 2317 } 2318 return (SSL_ERROR_SYSCALL); 2319} 2320 2321int 2322SSL_do_handshake(SSL *s) 2323{ 2324 int ret = 1; 2325 2326 if (s->handshake_func == NULL) { 2327 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2328 SSL_R_CONNECTION_TYPE_NOT_SET); 2329 return (-1); 2330 } 2331 2332 s->method->ssl_renegotiate_check(s); 2333 2334 if (SSL_in_init(s) || SSL_in_before(s)) { 2335 ret = s->handshake_func(s); 2336 } 2337 return (ret); 2338} 2339 2340/* 2341 * For the next 2 functions, SSL_clear() sets shutdown and so 2342 * one of these calls will reset it 2343 */ 2344void 2345SSL_set_accept_state(SSL *s) 2346{ 2347 s->server = 1; 2348 s->shutdown = 0; 2349 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2350 s->handshake_func = s->method->ssl_accept; 2351 /* clear the current cipher */ 2352 ssl_clear_cipher_ctx(s); 2353 ssl_clear_hash_ctx(&s->read_hash); 2354 ssl_clear_hash_ctx(&s->write_hash); 2355} 2356 2357void 2358SSL_set_connect_state(SSL *s) 2359{ 2360 s->server = 0; 2361 s->shutdown = 0; 2362 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2363 s->handshake_func = s->method->ssl_connect; 2364 /* clear the current cipher */ 2365 ssl_clear_cipher_ctx(s); 2366 ssl_clear_hash_ctx(&s->read_hash); 2367 ssl_clear_hash_ctx(&s->write_hash); 2368} 2369 2370int 2371ssl_undefined_function(SSL *s) 2372{ 2373 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2374 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2375 return (0); 2376} 2377 2378int 2379ssl_undefined_void_function(void) 2380{ 2381 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2382 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2383 return (0); 2384} 2385 2386int 2387ssl_undefined_const_function(const SSL *s) 2388{ 2389 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2390 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2391 return (0); 2392} 2393 2394SSL_METHOD * 2395ssl_bad_method(int ver) 2396{ 2397 SSLerr(SSL_F_SSL_BAD_METHOD, 2398 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2399 return (NULL); 2400} 2401 2402const char * 2403ssl_version_string(int ver) 2404{ 2405 switch (ver) { 2406 case DTLS1_BAD_VER: 2407 return (SSL_TXT_DTLS1_BAD); 2408 case DTLS1_VERSION: 2409 return (SSL_TXT_DTLS1); 2410 case SSL3_VERSION: 2411 return (SSL_TXT_SSLV3); 2412 case TLS1_VERSION: 2413 return (SSL_TXT_TLSV1); 2414 case TLS1_1_VERSION: 2415 return (SSL_TXT_TLSV1_1); 2416 case TLS1_2_VERSION: 2417 return (SSL_TXT_TLSV1_2); 2418 default: 2419 return ("unknown"); 2420 } 2421} 2422 2423const char * 2424SSL_get_version(const SSL *s) 2425{ 2426 return ssl_version_string(s->version); 2427} 2428 2429SSL * 2430SSL_dup(SSL *s) 2431{ 2432 STACK_OF(X509_NAME) *sk; 2433 X509_NAME *xn; 2434 SSL *ret; 2435 int i; 2436 2437 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2438 return (NULL); 2439 2440 ret->version = s->version; 2441 ret->type = s->type; 2442 ret->method = s->method; 2443 2444 if (s->session != NULL) { 2445 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2446 SSL_copy_session_id(ret, s); 2447 } else { 2448 /* 2449 * No session has been established yet, so we have to expect 2450 * that s->cert or ret->cert will be changed later -- 2451 * they should not both point to the same object, 2452 * and thus we can't use SSL_copy_session_id. 2453 */ 2454 2455 ret->method->ssl_free(ret); 2456 ret->method = s->method; 2457 ret->method->ssl_new(ret); 2458 2459 if (s->cert != NULL) { 2460 if (ret->cert != NULL) { 2461 ssl_cert_free(ret->cert); 2462 } 2463 ret->cert = ssl_cert_dup(s->cert); 2464 if (ret->cert == NULL) 2465 goto err; 2466 } 2467 2468 SSL_set_session_id_context(ret, 2469 s->sid_ctx, s->sid_ctx_length); 2470 } 2471 2472 ret->options = s->options; 2473 ret->mode = s->mode; 2474 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2475 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2476 ret->msg_callback = s->msg_callback; 2477 ret->msg_callback_arg = s->msg_callback_arg; 2478 SSL_set_verify(ret, SSL_get_verify_mode(s), 2479 SSL_get_verify_callback(s)); 2480 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2481 ret->generate_session_id = s->generate_session_id; 2482 2483 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2484 2485 ret->debug = s->debug; 2486 2487 /* copy app data, a little dangerous perhaps */ 2488 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2489 &ret->ex_data, &s->ex_data)) 2490 goto err; 2491 2492 /* setup rbio, and wbio */ 2493 if (s->rbio != NULL) { 2494 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2495 goto err; 2496 } 2497 if (s->wbio != NULL) { 2498 if (s->wbio != s->rbio) { 2499 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2500 goto err; 2501 } else 2502 ret->wbio = ret->rbio; 2503 } 2504 ret->rwstate = s->rwstate; 2505 ret->in_handshake = s->in_handshake; 2506 ret->handshake_func = s->handshake_func; 2507 ret->server = s->server; 2508 ret->renegotiate = s->renegotiate; 2509 ret->new_session = s->new_session; 2510 ret->quiet_shutdown = s->quiet_shutdown; 2511 ret->shutdown = s->shutdown; 2512 /* SSL_dup does not really work at any state, though */ 2513 ret->state=s->state; 2514 ret->rstate = s->rstate; 2515 2516 /* 2517 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2518 * ret->init_off 2519 */ 2520 ret->init_num = 0; 2521 2522 ret->hit = s->hit; 2523 2524 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2525 2526 /* dup the cipher_list and cipher_list_by_id stacks */ 2527 if (s->cipher_list != NULL) { 2528 if ((ret->cipher_list = 2529 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2530 goto err; 2531 } 2532 if (s->cipher_list_by_id != NULL) { 2533 if ((ret->cipher_list_by_id = 2534 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2535 goto err; 2536 } 2537 2538 /* Dup the client_CA list */ 2539 if (s->client_CA != NULL) { 2540 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2541 ret->client_CA = sk; 2542 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2543 xn = sk_X509_NAME_value(sk, i); 2544 if (sk_X509_NAME_set(sk, i, 2545 X509_NAME_dup(xn)) == NULL) { 2546 X509_NAME_free(xn); 2547 goto err; 2548 } 2549 } 2550 } 2551 2552 if (0) { 2553err: 2554 if (ret != NULL) 2555 SSL_free(ret); 2556 ret = NULL; 2557 } 2558 return (ret); 2559} 2560 2561void 2562ssl_clear_cipher_ctx(SSL *s) 2563{ 2564 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2565 s->enc_read_ctx = NULL; 2566 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2567 s->enc_write_ctx = NULL; 2568 2569 if (s->aead_read_ctx != NULL) { 2570 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2571 free(s->aead_read_ctx); 2572 s->aead_read_ctx = NULL; 2573 } 2574 if (s->aead_write_ctx != NULL) { 2575 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2576 free(s->aead_write_ctx); 2577 s->aead_write_ctx = NULL; 2578 } 2579 2580} 2581 2582/* Fix this function so that it takes an optional type parameter */ 2583X509 * 2584SSL_get_certificate(const SSL *s) 2585{ 2586 if (s->cert != NULL) 2587 return (s->cert->key->x509); 2588 else 2589 return (NULL); 2590} 2591 2592/* Fix this function so that it takes an optional type parameter */ 2593EVP_PKEY * 2594SSL_get_privatekey(SSL *s) 2595{ 2596 if (s->cert != NULL) 2597 return (s->cert->key->privatekey); 2598 else 2599 return (NULL); 2600} 2601 2602const SSL_CIPHER * 2603SSL_get_current_cipher(const SSL *s) 2604{ 2605 if ((s->session != NULL) && (s->session->cipher != NULL)) 2606 return (s->session->cipher); 2607 return (NULL); 2608} 2609const void * 2610SSL_get_current_compression(SSL *s) 2611{ 2612 return (NULL); 2613} 2614 2615const void * 2616SSL_get_current_expansion(SSL *s) 2617{ 2618 return (NULL); 2619} 2620 2621int 2622ssl_init_wbio_buffer(SSL *s, int push) 2623{ 2624 BIO *bbio; 2625 2626 if (s->bbio == NULL) { 2627 bbio = BIO_new(BIO_f_buffer()); 2628 if (bbio == NULL) 2629 return (0); 2630 s->bbio = bbio; 2631 } else { 2632 bbio = s->bbio; 2633 if (s->bbio == s->wbio) 2634 s->wbio = BIO_pop(s->wbio); 2635 } 2636 (void)BIO_reset(bbio); 2637/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2638 if (!BIO_set_read_buffer_size(bbio, 1)) { 2639 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2640 ERR_R_BUF_LIB); 2641 return (0); 2642 } 2643 if (push) { 2644 if (s->wbio != bbio) 2645 s->wbio = BIO_push(bbio, s->wbio); 2646 } else { 2647 if (s->wbio == bbio) 2648 s->wbio = BIO_pop(bbio); 2649 } 2650 return (1); 2651} 2652 2653void 2654ssl_free_wbio_buffer(SSL *s) 2655{ 2656 if (s->bbio == NULL) 2657 return; 2658 2659 if (s->bbio == s->wbio) { 2660 /* remove buffering */ 2661 s->wbio = BIO_pop(s->wbio); 2662 } 2663 BIO_free(s->bbio); 2664 s->bbio = NULL; 2665} 2666 2667void 2668SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2669{ 2670 ctx->quiet_shutdown = mode; 2671} 2672 2673int 2674SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2675{ 2676 return (ctx->quiet_shutdown); 2677} 2678 2679void 2680SSL_set_quiet_shutdown(SSL *s, int mode) 2681{ 2682 s->quiet_shutdown = mode; 2683} 2684 2685int 2686SSL_get_quiet_shutdown(const SSL *s) 2687{ 2688 return (s->quiet_shutdown); 2689} 2690 2691void 2692SSL_set_shutdown(SSL *s, int mode) 2693{ 2694 s->shutdown = mode; 2695} 2696 2697int 2698SSL_get_shutdown(const SSL *s) 2699{ 2700 return (s->shutdown); 2701} 2702 2703int 2704SSL_version(const SSL *s) 2705{ 2706 return (s->version); 2707} 2708 2709SSL_CTX * 2710SSL_get_SSL_CTX(const SSL *ssl) 2711{ 2712 return (ssl->ctx); 2713} 2714 2715SSL_CTX * 2716SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2717{ 2718 if (ssl->ctx == ctx) 2719 return (ssl->ctx); 2720 if (ctx == NULL) 2721 ctx = ssl->initial_ctx; 2722 if (ssl->cert != NULL) 2723 ssl_cert_free(ssl->cert); 2724 ssl->cert = ssl_cert_dup(ctx->cert); 2725 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2726 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2727 ssl->ctx = ctx; 2728 return (ssl->ctx); 2729} 2730 2731int 2732SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2733{ 2734 return (X509_STORE_set_default_paths(ctx->cert_store)); 2735} 2736 2737int 2738SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2739 const char *CApath) 2740{ 2741 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2742} 2743 2744void 2745SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2746{ 2747 ssl->info_callback = cb; 2748} 2749 2750void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2751{ 2752 return (ssl->info_callback); 2753} 2754 2755int 2756SSL_state(const SSL *ssl) 2757{ 2758 return (ssl->state); 2759} 2760 2761void 2762SSL_set_state(SSL *ssl, int state) 2763{ 2764 ssl->state = state; 2765} 2766 2767void 2768SSL_set_verify_result(SSL *ssl, long arg) 2769{ 2770 ssl->verify_result = arg; 2771} 2772 2773long 2774SSL_get_verify_result(const SSL *ssl) 2775{ 2776 return (ssl->verify_result); 2777} 2778 2779int 2780SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2781 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2782{ 2783 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2784 new_func, dup_func, free_func)); 2785} 2786 2787int 2788SSL_set_ex_data(SSL *s, int idx, void *arg) 2789{ 2790 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2791} 2792 2793void * 2794SSL_get_ex_data(const SSL *s, int idx) 2795{ 2796 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2797} 2798 2799int 2800SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2801 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2802{ 2803 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2804 new_func, dup_func, free_func)); 2805} 2806 2807int 2808SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2809{ 2810 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2811} 2812 2813void * 2814SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2815{ 2816 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2817} 2818 2819int 2820ssl_ok(SSL *s) 2821{ 2822 return (1); 2823} 2824 2825X509_STORE * 2826SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2827{ 2828 return (ctx->cert_store); 2829} 2830 2831void 2832SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2833{ 2834 if (ctx->cert_store != NULL) 2835 X509_STORE_free(ctx->cert_store); 2836 ctx->cert_store = store; 2837} 2838 2839int 2840SSL_want(const SSL *s) 2841{ 2842 return (s->rwstate); 2843} 2844 2845void 2846SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2847 int keylength)) 2848{ 2849 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2850} 2851 2852void 2853SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2854 int keylength)) 2855{ 2856 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2857} 2858 2859void 2860SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2861 int keylength)) 2862{ 2863 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2864} 2865 2866void 2867SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2868 int keylength)) 2869{ 2870 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2871} 2872 2873void 2874SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2875 int is_export, int keylength)) 2876{ 2877 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2878 (void (*)(void))ecdh); 2879} 2880 2881void 2882SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2883 int keylength)) 2884{ 2885 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2886} 2887 2888 2889void 2890SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2891 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2892{ 2893 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2894 (void (*)(void))cb); 2895} 2896 2897void 2898SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2899 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2900{ 2901 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2902} 2903 2904/* 2905 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 2906 * variable, freeing EVP_MD_CTX previously stored in that variable, if 2907 * any. If EVP_MD pointer is passed, initializes ctx with this md 2908 * Returns newly allocated ctx; 2909 */ 2910EVP_MD_CTX * 2911ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 2912{ 2913 ssl_clear_hash_ctx(hash); 2914 *hash = EVP_MD_CTX_create(); 2915 if (*hash != NULL && md != NULL) 2916 EVP_DigestInit_ex(*hash, md, NULL); 2917 return (*hash); 2918} 2919 2920void 2921ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2922{ 2923 if (*hash) 2924 EVP_MD_CTX_destroy(*hash); 2925 *hash = NULL; 2926} 2927 2928void 2929SSL_set_debug(SSL *s, int debug) 2930{ 2931 s->debug = debug; 2932} 2933 2934int 2935SSL_cache_hit(SSL *s) 2936{ 2937 return (s->hit); 2938} 2939 2940IMPLEMENT_STACK_OF(SSL_CIPHER) 2941IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2942