ssl_lib.c revision 325337
1/* 2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions. 3 */ 4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay@cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay@cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60/* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core@openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay@cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh@cryptsoft.com). 111 * 112 */ 113/* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118/* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145#ifdef REF_CHECK 146# include <assert.h> 147#endif 148#include <stdio.h> 149#include "ssl_locl.h" 150#include "kssl_lcl.h" 151#include <openssl/objects.h> 152#include <openssl/lhash.h> 153#include <openssl/x509v3.h> 154#include <openssl/rand.h> 155#include <openssl/ocsp.h> 156#ifndef OPENSSL_NO_DH 157# include <openssl/dh.h> 158#endif 159#ifndef OPENSSL_NO_ENGINE 160# include <openssl/engine.h> 161#endif 162 163const char *SSL_version_str = OPENSSL_VERSION_TEXT; 164 165SSL3_ENC_METHOD ssl3_undef_enc_method = { 166 /* 167 * evil casts, but these functions are only called if there's a library 168 * bug 169 */ 170 (int (*)(SSL *, int))ssl_undefined_function, 171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 172 ssl_undefined_function, 173 (int (*)(SSL *, unsigned char *, unsigned char *, int)) 174 ssl_undefined_function, 175 (int (*)(SSL *, int))ssl_undefined_function, 176 (int (*)(SSL *, const char *, int, unsigned char *)) 177 ssl_undefined_function, 178 0, /* finish_mac_length */ 179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 180 NULL, /* client_finished_label */ 181 0, /* client_finished_label_len */ 182 NULL, /* server_finished_label */ 183 0, /* server_finished_label_len */ 184 (int (*)(int))ssl_undefined_function, 185 (int (*)(SSL *, unsigned char *, size_t, const char *, 186 size_t, const unsigned char *, size_t, 187 int use_context))ssl_undefined_function, 188}; 189 190int SSL_clear(SSL *s) 191{ 192 193 if (s->method == NULL) { 194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 195 return (0); 196 } 197 198 if (ssl_clear_bad_session(s)) { 199 SSL_SESSION_free(s->session); 200 s->session = NULL; 201 } 202 203 s->error = 0; 204 s->hit = 0; 205 s->shutdown = 0; 206 207#if 0 208 /* 209 * Disabled since version 1.10 of this file (early return not 210 * needed because SSL_clear is not called when doing renegotiation) 211 */ 212 /* 213 * This is set if we are doing dynamic renegotiation so keep 214 * the old cipher. It is sort of a SSL_clear_lite :-) 215 */ 216 if (s->renegotiate) 217 return (1); 218#else 219 if (s->renegotiate) { 220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 221 return 0; 222 } 223#endif 224 225 s->type = 0; 226 227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 228 229 s->version = s->method->version; 230 s->client_version = s->version; 231 s->rwstate = SSL_NOTHING; 232 s->rstate = SSL_ST_READ_HEADER; 233#if 0 234 s->read_ahead = s->ctx->read_ahead; 235#endif 236 237 if (s->init_buf != NULL) { 238 BUF_MEM_free(s->init_buf); 239 s->init_buf = NULL; 240 } 241 242 ssl_clear_cipher_ctx(s); 243 ssl_clear_hash_ctx(&s->read_hash); 244 ssl_clear_hash_ctx(&s->write_hash); 245 246 s->first_packet = 0; 247#ifndef OPENSSL_NO_TLSEXT 248 if (s->cert != NULL) { 249 if (s->cert->alpn_proposed) { 250 OPENSSL_free(s->cert->alpn_proposed); 251 s->cert->alpn_proposed = NULL; 252 } 253 s->cert->alpn_proposed_len = 0; 254 s->cert->alpn_sent = 0; 255 } 256#endif 257#if 1 258 /* 259 * Check to see if we were changed into a different method, if so, revert 260 * back if we are not doing session-id reuse. 261 */ 262 if (!s->in_handshake && (s->session == NULL) 263 && (s->method != s->ctx->method)) { 264 s->method->ssl_free(s); 265 s->method = s->ctx->method; 266 if (!s->method->ssl_new(s)) 267 return (0); 268 } else 269#endif 270 s->method->ssl_clear(s); 271 return (1); 272} 273 274/** Used to change an SSL_CTXs default SSL method type */ 275int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 276{ 277 STACK_OF(SSL_CIPHER) *sk; 278 279 ctx->method = meth; 280 281 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 282 &(ctx->cipher_list_by_id), 283 meth->version == 284 SSL2_VERSION ? "SSLv2" : 285 SSL_DEFAULT_CIPHER_LIST, ctx->cert); 286 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 287 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 288 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 289 return (0); 290 } 291 return (1); 292} 293 294SSL *SSL_new(SSL_CTX *ctx) 295{ 296 SSL *s; 297 298 if (ctx == NULL) { 299 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 300 return (NULL); 301 } 302 if (ctx->method == NULL) { 303 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 304 return (NULL); 305 } 306 307 s = (SSL *)OPENSSL_malloc(sizeof(SSL)); 308 if (s == NULL) 309 goto err; 310 memset(s, 0, sizeof(SSL)); 311 312#ifndef OPENSSL_NO_KRB5 313 s->kssl_ctx = kssl_ctx_new(); 314#endif /* OPENSSL_NO_KRB5 */ 315 316 s->options = ctx->options; 317 s->mode = ctx->mode; 318 s->max_cert_list = ctx->max_cert_list; 319 s->references = 1; 320 321 if (ctx->cert != NULL) { 322 /* 323 * Earlier library versions used to copy the pointer to the CERT, not 324 * its contents; only when setting new parameters for the per-SSL 325 * copy, ssl_cert_new would be called (and the direct reference to 326 * the per-SSL_CTX settings would be lost, but those still were 327 * indirectly accessed for various purposes, and for that reason they 328 * used to be known as s->ctx->default_cert). Now we don't look at the 329 * SSL_CTX's CERT after having duplicated it once. 330 */ 331 332 s->cert = ssl_cert_dup(ctx->cert); 333 if (s->cert == NULL) 334 goto err; 335 } else 336 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */ 337 338 s->read_ahead = ctx->read_ahead; 339 s->msg_callback = ctx->msg_callback; 340 s->msg_callback_arg = ctx->msg_callback_arg; 341 s->verify_mode = ctx->verify_mode; 342#if 0 343 s->verify_depth = ctx->verify_depth; 344#endif 345 s->sid_ctx_length = ctx->sid_ctx_length; 346 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 347 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 348 s->verify_callback = ctx->default_verify_callback; 349 s->generate_session_id = ctx->generate_session_id; 350 351 s->param = X509_VERIFY_PARAM_new(); 352 if (!s->param) 353 goto err; 354 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 355#if 0 356 s->purpose = ctx->purpose; 357 s->trust = ctx->trust; 358#endif 359 s->quiet_shutdown = ctx->quiet_shutdown; 360 s->max_send_fragment = ctx->max_send_fragment; 361 362 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 363 s->ctx = ctx; 364#ifndef OPENSSL_NO_TLSEXT 365 s->tlsext_debug_cb = 0; 366 s->tlsext_debug_arg = NULL; 367 s->tlsext_ticket_expected = 0; 368 s->tlsext_status_type = -1; 369 s->tlsext_status_expected = 0; 370 s->tlsext_ocsp_ids = NULL; 371 s->tlsext_ocsp_exts = NULL; 372 s->tlsext_ocsp_resp = NULL; 373 s->tlsext_ocsp_resplen = -1; 374 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 375 s->initial_ctx = ctx; 376# ifndef OPENSSL_NO_EC 377 if (ctx->tlsext_ecpointformatlist) { 378 s->tlsext_ecpointformatlist = 379 BUF_memdup(ctx->tlsext_ecpointformatlist, 380 ctx->tlsext_ecpointformatlist_length); 381 if (!s->tlsext_ecpointformatlist) 382 goto err; 383 s->tlsext_ecpointformatlist_length = 384 ctx->tlsext_ecpointformatlist_length; 385 } 386 if (ctx->tlsext_ellipticcurvelist) { 387 s->tlsext_ellipticcurvelist = 388 BUF_memdup(ctx->tlsext_ellipticcurvelist, 389 ctx->tlsext_ellipticcurvelist_length); 390 if (!s->tlsext_ellipticcurvelist) 391 goto err; 392 s->tlsext_ellipticcurvelist_length = 393 ctx->tlsext_ellipticcurvelist_length; 394 } 395# endif 396# ifndef OPENSSL_NO_NEXTPROTONEG 397 s->next_proto_negotiated = NULL; 398# endif 399 400 if (s->ctx->alpn_client_proto_list) { 401 s->alpn_client_proto_list = 402 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); 403 if (s->alpn_client_proto_list == NULL) 404 goto err; 405 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, 406 s->ctx->alpn_client_proto_list_len); 407 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; 408 } 409#endif 410 411 s->verify_result = X509_V_OK; 412 413 s->method = ctx->method; 414 415 if (!s->method->ssl_new(s)) 416 goto err; 417 418 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 419 420 SSL_clear(s); 421 422 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 423 424#ifndef OPENSSL_NO_PSK 425 s->psk_client_callback = ctx->psk_client_callback; 426 s->psk_server_callback = ctx->psk_server_callback; 427#endif 428 429 return (s); 430 err: 431 if (s != NULL) 432 SSL_free(s); 433 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 434 return (NULL); 435} 436 437int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 438 unsigned int sid_ctx_len) 439{ 440 if (sid_ctx_len > sizeof ctx->sid_ctx) { 441 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 442 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 443 return 0; 444 } 445 ctx->sid_ctx_length = sid_ctx_len; 446 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 447 448 return 1; 449} 450 451int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 452 unsigned int sid_ctx_len) 453{ 454 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 455 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 456 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 457 return 0; 458 } 459 ssl->sid_ctx_length = sid_ctx_len; 460 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 461 462 return 1; 463} 464 465int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 466{ 467 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 468 ctx->generate_session_id = cb; 469 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 470 return 1; 471} 472 473int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 474{ 475 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 476 ssl->generate_session_id = cb; 477 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 478 return 1; 479} 480 481int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 482 unsigned int id_len) 483{ 484 /* 485 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 486 * we can "construct" a session to give us the desired check - ie. to 487 * find if there's a session in the hash table that would conflict with 488 * any new session built out of this id/id_len and the ssl_version in use 489 * by this SSL. 490 */ 491 SSL_SESSION r, *p; 492 493 if (id_len > sizeof r.session_id) 494 return 0; 495 496 r.ssl_version = ssl->version; 497 r.session_id_length = id_len; 498 memcpy(r.session_id, id, id_len); 499 /* 500 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 501 * callback is calling us to check the uniqueness of a shorter ID, it 502 * must be compared as a padded-out ID because that is what it will be 503 * converted to when the callback has finished choosing it. 504 */ 505 if ((r.ssl_version == SSL2_VERSION) && 506 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) { 507 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len); 508 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 509 } 510 511 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 512 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 513 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 514 return (p != NULL); 515} 516 517int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 518{ 519 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 520} 521 522int SSL_set_purpose(SSL *s, int purpose) 523{ 524 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 525} 526 527int SSL_CTX_set_trust(SSL_CTX *s, int trust) 528{ 529 return X509_VERIFY_PARAM_set_trust(s->param, trust); 530} 531 532int SSL_set_trust(SSL *s, int trust) 533{ 534 return X509_VERIFY_PARAM_set_trust(s->param, trust); 535} 536 537int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 538{ 539 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 540} 541 542int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 543{ 544 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 545} 546 547X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) 548{ 549 return ctx->param; 550} 551 552X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) 553{ 554 return ssl->param; 555} 556 557void SSL_certs_clear(SSL *s) 558{ 559 ssl_cert_clear_certs(s->cert); 560} 561 562void SSL_free(SSL *s) 563{ 564 int i; 565 566 if (s == NULL) 567 return; 568 569 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 570#ifdef REF_PRINT 571 REF_PRINT("SSL", s); 572#endif 573 if (i > 0) 574 return; 575#ifdef REF_CHECK 576 if (i < 0) { 577 fprintf(stderr, "SSL_free, bad reference count\n"); 578 abort(); /* ok */ 579 } 580#endif 581 582 if (s->param) 583 X509_VERIFY_PARAM_free(s->param); 584 585 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 586 587 if (s->bbio != NULL) { 588 /* If the buffering BIO is in place, pop it off */ 589 if (s->bbio == s->wbio) { 590 s->wbio = BIO_pop(s->wbio); 591 } 592 BIO_free(s->bbio); 593 s->bbio = NULL; 594 } 595 if (s->rbio != NULL) 596 BIO_free_all(s->rbio); 597 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 598 BIO_free_all(s->wbio); 599 600 if (s->init_buf != NULL) 601 BUF_MEM_free(s->init_buf); 602 603 /* add extra stuff */ 604 if (s->cipher_list != NULL) 605 sk_SSL_CIPHER_free(s->cipher_list); 606 if (s->cipher_list_by_id != NULL) 607 sk_SSL_CIPHER_free(s->cipher_list_by_id); 608 609 /* Make the next call work :-) */ 610 if (s->session != NULL) { 611 ssl_clear_bad_session(s); 612 SSL_SESSION_free(s->session); 613 } 614 615 ssl_clear_cipher_ctx(s); 616 ssl_clear_hash_ctx(&s->read_hash); 617 ssl_clear_hash_ctx(&s->write_hash); 618 619 if (s->cert != NULL) 620 ssl_cert_free(s->cert); 621 /* Free up if allocated */ 622 623#ifndef OPENSSL_NO_TLSEXT 624 if (s->tlsext_hostname) 625 OPENSSL_free(s->tlsext_hostname); 626 if (s->initial_ctx) 627 SSL_CTX_free(s->initial_ctx); 628# ifndef OPENSSL_NO_EC 629 if (s->tlsext_ecpointformatlist) 630 OPENSSL_free(s->tlsext_ecpointformatlist); 631 if (s->tlsext_ellipticcurvelist) 632 OPENSSL_free(s->tlsext_ellipticcurvelist); 633# endif /* OPENSSL_NO_EC */ 634 if (s->tlsext_opaque_prf_input) 635 OPENSSL_free(s->tlsext_opaque_prf_input); 636 if (s->tlsext_ocsp_exts) 637 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); 638 if (s->tlsext_ocsp_ids) 639 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 640 if (s->tlsext_ocsp_resp) 641 OPENSSL_free(s->tlsext_ocsp_resp); 642 if (s->alpn_client_proto_list) 643 OPENSSL_free(s->alpn_client_proto_list); 644#endif 645 646 if (s->client_CA != NULL) 647 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 648 649 if (s->method != NULL) 650 s->method->ssl_free(s); 651 652 if (s->ctx) 653 SSL_CTX_free(s->ctx); 654 655#ifndef OPENSSL_NO_KRB5 656 if (s->kssl_ctx != NULL) 657 kssl_ctx_free(s->kssl_ctx); 658#endif /* OPENSSL_NO_KRB5 */ 659 660#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 661 if (s->next_proto_negotiated) 662 OPENSSL_free(s->next_proto_negotiated); 663#endif 664 665#ifndef OPENSSL_NO_SRTP 666 if (s->srtp_profiles) 667 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 668#endif 669 670 OPENSSL_free(s); 671} 672 673void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 674{ 675 /* 676 * If the output buffering BIO is still in place, remove it 677 */ 678 if (s->bbio != NULL) { 679 if (s->wbio == s->bbio) { 680 s->wbio = s->wbio->next_bio; 681 s->bbio->next_bio = NULL; 682 } 683 } 684 if ((s->rbio != NULL) && (s->rbio != rbio)) 685 BIO_free_all(s->rbio); 686 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 687 BIO_free_all(s->wbio); 688 s->rbio = rbio; 689 s->wbio = wbio; 690} 691 692BIO *SSL_get_rbio(const SSL *s) 693{ 694 return (s->rbio); 695} 696 697BIO *SSL_get_wbio(const SSL *s) 698{ 699 return (s->wbio); 700} 701 702int SSL_get_fd(const SSL *s) 703{ 704 return (SSL_get_rfd(s)); 705} 706 707int SSL_get_rfd(const SSL *s) 708{ 709 int ret = -1; 710 BIO *b, *r; 711 712 b = SSL_get_rbio(s); 713 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 714 if (r != NULL) 715 BIO_get_fd(r, &ret); 716 return (ret); 717} 718 719int SSL_get_wfd(const SSL *s) 720{ 721 int ret = -1; 722 BIO *b, *r; 723 724 b = SSL_get_wbio(s); 725 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 726 if (r != NULL) 727 BIO_get_fd(r, &ret); 728 return (ret); 729} 730 731#ifndef OPENSSL_NO_SOCK 732int SSL_set_fd(SSL *s, int fd) 733{ 734 int ret = 0; 735 BIO *bio = NULL; 736 737 bio = BIO_new(BIO_s_socket()); 738 739 if (bio == NULL) { 740 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 741 goto err; 742 } 743 BIO_set_fd(bio, fd, BIO_NOCLOSE); 744 SSL_set_bio(s, bio, bio); 745 ret = 1; 746 err: 747 return (ret); 748} 749 750int SSL_set_wfd(SSL *s, int fd) 751{ 752 int ret = 0; 753 BIO *bio = NULL; 754 755 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 756 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 757 bio = BIO_new(BIO_s_socket()); 758 759 if (bio == NULL) { 760 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 761 goto err; 762 } 763 BIO_set_fd(bio, fd, BIO_NOCLOSE); 764 SSL_set_bio(s, SSL_get_rbio(s), bio); 765 } else 766 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 767 ret = 1; 768 err: 769 return (ret); 770} 771 772int SSL_set_rfd(SSL *s, int fd) 773{ 774 int ret = 0; 775 BIO *bio = NULL; 776 777 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 778 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 779 bio = BIO_new(BIO_s_socket()); 780 781 if (bio == NULL) { 782 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 783 goto err; 784 } 785 BIO_set_fd(bio, fd, BIO_NOCLOSE); 786 SSL_set_bio(s, bio, SSL_get_wbio(s)); 787 } else 788 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 789 ret = 1; 790 err: 791 return (ret); 792} 793#endif 794 795/* return length of latest Finished message we sent, copy to 'buf' */ 796size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 797{ 798 size_t ret = 0; 799 800 if (s->s3 != NULL) { 801 ret = s->s3->tmp.finish_md_len; 802 if (count > ret) 803 count = ret; 804 memcpy(buf, s->s3->tmp.finish_md, count); 805 } 806 return ret; 807} 808 809/* return length of latest Finished message we expected, copy to 'buf' */ 810size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 811{ 812 size_t ret = 0; 813 814 if (s->s3 != NULL) { 815 ret = s->s3->tmp.peer_finish_md_len; 816 if (count > ret) 817 count = ret; 818 memcpy(buf, s->s3->tmp.peer_finish_md, count); 819 } 820 return ret; 821} 822 823int SSL_get_verify_mode(const SSL *s) 824{ 825 return (s->verify_mode); 826} 827 828int SSL_get_verify_depth(const SSL *s) 829{ 830 return X509_VERIFY_PARAM_get_depth(s->param); 831} 832 833int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { 834 return (s->verify_callback); 835} 836 837int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 838{ 839 return (ctx->verify_mode); 840} 841 842int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 843{ 844 return X509_VERIFY_PARAM_get_depth(ctx->param); 845} 846 847int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { 848 return (ctx->default_verify_callback); 849} 850 851void SSL_set_verify(SSL *s, int mode, 852 int (*callback) (int ok, X509_STORE_CTX *ctx)) 853{ 854 s->verify_mode = mode; 855 if (callback != NULL) 856 s->verify_callback = callback; 857} 858 859void SSL_set_verify_depth(SSL *s, int depth) 860{ 861 X509_VERIFY_PARAM_set_depth(s->param, depth); 862} 863 864void SSL_set_read_ahead(SSL *s, int yes) 865{ 866 s->read_ahead = yes; 867} 868 869int SSL_get_read_ahead(const SSL *s) 870{ 871 return (s->read_ahead); 872} 873 874int SSL_pending(const SSL *s) 875{ 876 /* 877 * SSL_pending cannot work properly if read-ahead is enabled 878 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is 879 * impossible to fix since SSL_pending cannot report errors that may be 880 * observed while scanning the new data. (Note that SSL_pending() is 881 * often used as a boolean value, so we'd better not return -1.) 882 */ 883 return (s->method->ssl_pending(s)); 884} 885 886X509 *SSL_get_peer_certificate(const SSL *s) 887{ 888 X509 *r; 889 890 if ((s == NULL) || (s->session == NULL)) 891 r = NULL; 892 else 893 r = s->session->peer; 894 895 if (r == NULL) 896 return (r); 897 898 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 899 900 return (r); 901} 902 903STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 904{ 905 STACK_OF(X509) *r; 906 907 if ((s == NULL) || (s->session == NULL) 908 || (s->session->sess_cert == NULL)) 909 r = NULL; 910 else 911 r = s->session->sess_cert->cert_chain; 912 913 /* 914 * If we are a client, cert_chain includes the peer's own certificate; if 915 * we are a server, it does not. 916 */ 917 918 return (r); 919} 920 921/* 922 * Now in theory, since the calling process own 't' it should be safe to 923 * modify. We need to be able to read f without being hassled 924 */ 925void SSL_copy_session_id(SSL *t, const SSL *f) 926{ 927 CERT *tmp; 928 929 /* Do we need to to SSL locking? */ 930 SSL_set_session(t, SSL_get_session(f)); 931 932 /* 933 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa 934 */ 935 if (t->method != f->method) { 936 t->method->ssl_free(t); /* cleanup current */ 937 t->method = f->method; /* change method */ 938 t->method->ssl_new(t); /* setup new */ 939 } 940 941 tmp = t->cert; 942 if (f->cert != NULL) { 943 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 944 t->cert = f->cert; 945 } else 946 t->cert = NULL; 947 if (tmp != NULL) 948 ssl_cert_free(tmp); 949 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 950} 951 952/* Fix this so it checks all the valid key/cert options */ 953int SSL_CTX_check_private_key(const SSL_CTX *ctx) 954{ 955 if ((ctx == NULL) || 956 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) { 957 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 958 SSL_R_NO_CERTIFICATE_ASSIGNED); 959 return (0); 960 } 961 if (ctx->cert->key->privatekey == NULL) { 962 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 963 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 964 return (0); 965 } 966 return (X509_check_private_key 967 (ctx->cert->key->x509, ctx->cert->key->privatekey)); 968} 969 970/* Fix this function so that it takes an optional type parameter */ 971int SSL_check_private_key(const SSL *ssl) 972{ 973 if (ssl == NULL) { 974 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 975 return (0); 976 } 977 if (ssl->cert == NULL) { 978 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 979 return 0; 980 } 981 if (ssl->cert->key->x509 == NULL) { 982 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 983 return (0); 984 } 985 if (ssl->cert->key->privatekey == NULL) { 986 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 987 return (0); 988 } 989 return (X509_check_private_key(ssl->cert->key->x509, 990 ssl->cert->key->privatekey)); 991} 992 993int SSL_accept(SSL *s) 994{ 995 if (s->handshake_func == 0) 996 /* Not properly initialized yet */ 997 SSL_set_accept_state(s); 998 999 return (s->method->ssl_accept(s)); 1000} 1001 1002int SSL_connect(SSL *s) 1003{ 1004 if (s->handshake_func == 0) 1005 /* Not properly initialized yet */ 1006 SSL_set_connect_state(s); 1007 1008 return (s->method->ssl_connect(s)); 1009} 1010 1011long SSL_get_default_timeout(const SSL *s) 1012{ 1013 return (s->method->get_timeout()); 1014} 1015 1016int SSL_read(SSL *s, void *buf, int num) 1017{ 1018 if (s->handshake_func == 0) { 1019 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 1020 return -1; 1021 } 1022 1023 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1024 s->rwstate = SSL_NOTHING; 1025 return (0); 1026 } 1027 return (s->method->ssl_read(s, buf, num)); 1028} 1029 1030int SSL_peek(SSL *s, void *buf, int num) 1031{ 1032 if (s->handshake_func == 0) { 1033 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 1034 return -1; 1035 } 1036 1037 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1038 return (0); 1039 } 1040 return (s->method->ssl_peek(s, buf, num)); 1041} 1042 1043int SSL_write(SSL *s, const void *buf, int num) 1044{ 1045 if (s->handshake_func == 0) { 1046 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 1047 return -1; 1048 } 1049 1050 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1051 s->rwstate = SSL_NOTHING; 1052 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 1053 return (-1); 1054 } 1055 return (s->method->ssl_write(s, buf, num)); 1056} 1057 1058int SSL_shutdown(SSL *s) 1059{ 1060 /* 1061 * Note that this function behaves differently from what one might 1062 * expect. Return values are 0 for no success (yet), 1 for success; but 1063 * calling it once is usually not enough, even if blocking I/O is used 1064 * (see ssl3_shutdown). 1065 */ 1066 1067 if (s->handshake_func == 0) { 1068 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1069 return -1; 1070 } 1071 1072 if (!SSL_in_init(s)) { 1073 return s->method->ssl_shutdown(s); 1074 } else { 1075 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT); 1076 return -1; 1077 } 1078} 1079 1080int SSL_renegotiate(SSL *s) 1081{ 1082 if (s->renegotiate == 0) 1083 s->renegotiate = 1; 1084 1085 s->new_session = 1; 1086 1087 return (s->method->ssl_renegotiate(s)); 1088} 1089 1090int SSL_renegotiate_abbreviated(SSL *s) 1091{ 1092 if (s->renegotiate == 0) 1093 s->renegotiate = 1; 1094 1095 s->new_session = 0; 1096 1097 return (s->method->ssl_renegotiate(s)); 1098} 1099 1100int SSL_renegotiate_pending(SSL *s) 1101{ 1102 /* 1103 * becomes true when negotiation is requested; false again once a 1104 * handshake has finished 1105 */ 1106 return (s->renegotiate != 0); 1107} 1108 1109long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1110{ 1111 long l; 1112 1113 switch (cmd) { 1114 case SSL_CTRL_GET_READ_AHEAD: 1115 return (s->read_ahead); 1116 case SSL_CTRL_SET_READ_AHEAD: 1117 l = s->read_ahead; 1118 s->read_ahead = larg; 1119 return (l); 1120 1121 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1122 s->msg_callback_arg = parg; 1123 return 1; 1124 1125 case SSL_CTRL_OPTIONS: 1126 return (s->options |= larg); 1127 case SSL_CTRL_CLEAR_OPTIONS: 1128 return (s->options &= ~larg); 1129 case SSL_CTRL_MODE: 1130 return (s->mode |= larg); 1131 case SSL_CTRL_CLEAR_MODE: 1132 return (s->mode &= ~larg); 1133 case SSL_CTRL_GET_MAX_CERT_LIST: 1134 return (s->max_cert_list); 1135 case SSL_CTRL_SET_MAX_CERT_LIST: 1136 l = s->max_cert_list; 1137 s->max_cert_list = larg; 1138 return (l); 1139 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1140 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1141 return 0; 1142 s->max_send_fragment = larg; 1143 return 1; 1144 case SSL_CTRL_GET_RI_SUPPORT: 1145 if (s->s3) 1146 return s->s3->send_connection_binding; 1147 else 1148 return 0; 1149 case SSL_CTRL_CERT_FLAGS: 1150 return (s->cert->cert_flags |= larg); 1151 case SSL_CTRL_CLEAR_CERT_FLAGS: 1152 return (s->cert->cert_flags &= ~larg); 1153 1154 case SSL_CTRL_GET_RAW_CIPHERLIST: 1155 if (parg) { 1156 if (s->cert->ciphers_raw == NULL) 1157 return 0; 1158 *(unsigned char **)parg = s->cert->ciphers_raw; 1159 return (int)s->cert->ciphers_rawlen; 1160 } else 1161 return ssl_put_cipher_by_char(s, NULL, NULL); 1162 default: 1163 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1164 } 1165} 1166 1167long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) 1168{ 1169 switch (cmd) { 1170 case SSL_CTRL_SET_MSG_CALLBACK: 1171 s->msg_callback = (void (*) 1172 (int write_p, int version, int content_type, 1173 const void *buf, size_t len, SSL *ssl, 1174 void *arg))(fp); 1175 return 1; 1176 1177 default: 1178 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1179 } 1180} 1181 1182LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1183{ 1184 return ctx->sessions; 1185} 1186 1187long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1188{ 1189 long l; 1190 /* For some cases with ctx == NULL perform syntax checks */ 1191 if (ctx == NULL) { 1192 switch (cmd) { 1193#ifndef OPENSSL_NO_EC 1194 case SSL_CTRL_SET_CURVES_LIST: 1195 return tls1_set_curves_list(NULL, NULL, parg); 1196#endif 1197 case SSL_CTRL_SET_SIGALGS_LIST: 1198 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: 1199 return tls1_set_sigalgs_list(NULL, parg, 0); 1200 default: 1201 return 0; 1202 } 1203 } 1204 1205 switch (cmd) { 1206 case SSL_CTRL_GET_READ_AHEAD: 1207 return (ctx->read_ahead); 1208 case SSL_CTRL_SET_READ_AHEAD: 1209 l = ctx->read_ahead; 1210 ctx->read_ahead = larg; 1211 return (l); 1212 1213 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1214 ctx->msg_callback_arg = parg; 1215 return 1; 1216 1217 case SSL_CTRL_GET_MAX_CERT_LIST: 1218 return (ctx->max_cert_list); 1219 case SSL_CTRL_SET_MAX_CERT_LIST: 1220 l = ctx->max_cert_list; 1221 ctx->max_cert_list = larg; 1222 return (l); 1223 1224 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1225 l = ctx->session_cache_size; 1226 ctx->session_cache_size = larg; 1227 return (l); 1228 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1229 return (ctx->session_cache_size); 1230 case SSL_CTRL_SET_SESS_CACHE_MODE: 1231 l = ctx->session_cache_mode; 1232 ctx->session_cache_mode = larg; 1233 return (l); 1234 case SSL_CTRL_GET_SESS_CACHE_MODE: 1235 return (ctx->session_cache_mode); 1236 1237 case SSL_CTRL_SESS_NUMBER: 1238 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1239 case SSL_CTRL_SESS_CONNECT: 1240 return (ctx->stats.sess_connect); 1241 case SSL_CTRL_SESS_CONNECT_GOOD: 1242 return (ctx->stats.sess_connect_good); 1243 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1244 return (ctx->stats.sess_connect_renegotiate); 1245 case SSL_CTRL_SESS_ACCEPT: 1246 return (ctx->stats.sess_accept); 1247 case SSL_CTRL_SESS_ACCEPT_GOOD: 1248 return (ctx->stats.sess_accept_good); 1249 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1250 return (ctx->stats.sess_accept_renegotiate); 1251 case SSL_CTRL_SESS_HIT: 1252 return (ctx->stats.sess_hit); 1253 case SSL_CTRL_SESS_CB_HIT: 1254 return (ctx->stats.sess_cb_hit); 1255 case SSL_CTRL_SESS_MISSES: 1256 return (ctx->stats.sess_miss); 1257 case SSL_CTRL_SESS_TIMEOUTS: 1258 return (ctx->stats.sess_timeout); 1259 case SSL_CTRL_SESS_CACHE_FULL: 1260 return (ctx->stats.sess_cache_full); 1261 case SSL_CTRL_OPTIONS: 1262 return (ctx->options |= larg); 1263 case SSL_CTRL_CLEAR_OPTIONS: 1264 return (ctx->options &= ~larg); 1265 case SSL_CTRL_MODE: 1266 return (ctx->mode |= larg); 1267 case SSL_CTRL_CLEAR_MODE: 1268 return (ctx->mode &= ~larg); 1269 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1270 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1271 return 0; 1272 ctx->max_send_fragment = larg; 1273 return 1; 1274 case SSL_CTRL_CERT_FLAGS: 1275 return (ctx->cert->cert_flags |= larg); 1276 case SSL_CTRL_CLEAR_CERT_FLAGS: 1277 return (ctx->cert->cert_flags &= ~larg); 1278 default: 1279 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1280 } 1281} 1282 1283long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) 1284{ 1285 switch (cmd) { 1286 case SSL_CTRL_SET_MSG_CALLBACK: 1287 ctx->msg_callback = (void (*) 1288 (int write_p, int version, int content_type, 1289 const void *buf, size_t len, SSL *ssl, 1290 void *arg))(fp); 1291 return 1; 1292 1293 default: 1294 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1295 } 1296} 1297 1298int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1299{ 1300 long l; 1301 1302 l = a->id - b->id; 1303 if (l == 0L) 1304 return (0); 1305 else 1306 return ((l > 0) ? 1 : -1); 1307} 1308 1309int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 1310 const SSL_CIPHER *const *bp) 1311{ 1312 long l; 1313 1314 l = (*ap)->id - (*bp)->id; 1315 if (l == 0L) 1316 return (0); 1317 else 1318 return ((l > 0) ? 1 : -1); 1319} 1320 1321/** return a STACK of the ciphers available for the SSL and in order of 1322 * preference */ 1323STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1324{ 1325 if (s != NULL) { 1326 if (s->cipher_list != NULL) { 1327 return (s->cipher_list); 1328 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1329 return (s->ctx->cipher_list); 1330 } 1331 } 1332 return (NULL); 1333} 1334 1335/** return a STACK of the ciphers available for the SSL and in order of 1336 * algorithm id */ 1337STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1338{ 1339 if (s != NULL) { 1340 if (s->cipher_list_by_id != NULL) { 1341 return (s->cipher_list_by_id); 1342 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { 1343 return (s->ctx->cipher_list_by_id); 1344 } 1345 } 1346 return (NULL); 1347} 1348 1349/** The old interface to get the same thing as SSL_get_ciphers() */ 1350const char *SSL_get_cipher_list(const SSL *s, int n) 1351{ 1352 SSL_CIPHER *c; 1353 STACK_OF(SSL_CIPHER) *sk; 1354 1355 if (s == NULL) 1356 return (NULL); 1357 sk = SSL_get_ciphers(s); 1358 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1359 return (NULL); 1360 c = sk_SSL_CIPHER_value(sk, n); 1361 if (c == NULL) 1362 return (NULL); 1363 return (c->name); 1364} 1365 1366/** specify the ciphers to be used by default by the SSL_CTX */ 1367int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1368{ 1369 STACK_OF(SSL_CIPHER) *sk; 1370 1371 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1372 &ctx->cipher_list_by_id, str, ctx->cert); 1373 /* 1374 * ssl_create_cipher_list may return an empty stack if it was unable to 1375 * find a cipher matching the given rule string (for example if the rule 1376 * string specifies a cipher which has been disabled). This is not an 1377 * error as far as ssl_create_cipher_list is concerned, and hence 1378 * ctx->cipher_list and ctx->cipher_list_by_id has been updated. 1379 */ 1380 if (sk == NULL) 1381 return 0; 1382 else if (sk_SSL_CIPHER_num(sk) == 0) { 1383 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1384 return 0; 1385 } 1386 return 1; 1387} 1388 1389/** specify the ciphers to be used by the SSL */ 1390int SSL_set_cipher_list(SSL *s, const char *str) 1391{ 1392 STACK_OF(SSL_CIPHER) *sk; 1393 1394 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1395 &s->cipher_list_by_id, str, s->cert); 1396 /* see comment in SSL_CTX_set_cipher_list */ 1397 if (sk == NULL) 1398 return 0; 1399 else if (sk_SSL_CIPHER_num(sk) == 0) { 1400 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1401 return 0; 1402 } 1403 return 1; 1404} 1405 1406/* works well for SSLv2, not so good for SSLv3 */ 1407char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1408{ 1409 char *p; 1410 STACK_OF(SSL_CIPHER) *sk; 1411 SSL_CIPHER *c; 1412 int i; 1413 1414 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) 1415 return (NULL); 1416 1417 p = buf; 1418 sk = s->session->ciphers; 1419 1420 if (sk_SSL_CIPHER_num(sk) == 0) 1421 return NULL; 1422 1423 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1424 int n; 1425 1426 c = sk_SSL_CIPHER_value(sk, i); 1427 n = strlen(c->name); 1428 if (n + 1 > len) { 1429 if (p != buf) 1430 --p; 1431 *p = '\0'; 1432 return buf; 1433 } 1434 strcpy(p, c->name); 1435 p += n; 1436 *(p++) = ':'; 1437 len -= n + 1; 1438 } 1439 p[-1] = '\0'; 1440 return (buf); 1441} 1442 1443int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1444 unsigned char *p, 1445 int (*put_cb) (const SSL_CIPHER *, 1446 unsigned char *)) 1447{ 1448 int i, j = 0; 1449 SSL_CIPHER *c; 1450 CERT *ct = s->cert; 1451 unsigned char *q; 1452 int empty_reneg_info_scsv = !s->renegotiate; 1453 /* Set disabled masks for this session */ 1454 ssl_set_client_disabled(s); 1455 1456 if (sk == NULL) 1457 return (0); 1458 q = p; 1459 if (put_cb == NULL) 1460 put_cb = s->method->put_cipher_by_char; 1461 1462 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1463 c = sk_SSL_CIPHER_value(sk, i); 1464 /* Skip disabled ciphers */ 1465 if (c->algorithm_ssl & ct->mask_ssl || 1466 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a) 1467 continue; 1468#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 1469 if (c->id == SSL3_CK_SCSV) { 1470 if (!empty_reneg_info_scsv) 1471 continue; 1472 else 1473 empty_reneg_info_scsv = 0; 1474 } 1475#endif 1476 j = put_cb(c, p); 1477 p += j; 1478 } 1479 /* 1480 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1481 * applicable SCSVs. 1482 */ 1483 if (p != q) { 1484 if (empty_reneg_info_scsv) { 1485 static SSL_CIPHER scsv = { 1486 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1487 }; 1488 j = put_cb(&scsv, p); 1489 p += j; 1490#ifdef OPENSSL_RI_DEBUG 1491 fprintf(stderr, 1492 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1493#endif 1494 } 1495 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1496 static SSL_CIPHER scsv = { 1497 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1498 }; 1499 j = put_cb(&scsv, p); 1500 p += j; 1501 } 1502 } 1503 1504 return (p - q); 1505} 1506 1507STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1508 int num, 1509 STACK_OF(SSL_CIPHER) **skp) 1510{ 1511 const SSL_CIPHER *c; 1512 STACK_OF(SSL_CIPHER) *sk; 1513 int i, n; 1514 1515 if (s->s3) 1516 s->s3->send_connection_binding = 0; 1517 1518 n = ssl_put_cipher_by_char(s, NULL, NULL); 1519 if (n == 0 || (num % n) != 0) { 1520 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1521 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1522 return (NULL); 1523 } 1524 if ((skp == NULL) || (*skp == NULL)) { 1525 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1526 if(sk == NULL) { 1527 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1528 return NULL; 1529 } 1530 } else { 1531 sk = *skp; 1532 sk_SSL_CIPHER_zero(sk); 1533 } 1534 1535 if (s->cert->ciphers_raw) 1536 OPENSSL_free(s->cert->ciphers_raw); 1537 s->cert->ciphers_raw = BUF_memdup(p, num); 1538 if (s->cert->ciphers_raw == NULL) { 1539 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1540 goto err; 1541 } 1542 s->cert->ciphers_rawlen = (size_t)num; 1543 1544 for (i = 0; i < num; i += n) { 1545 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1546 if (s->s3 && (n != 3 || !p[0]) && 1547 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1548 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1549 /* SCSV fatal if renegotiating */ 1550 if (s->renegotiate) { 1551 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1552 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1553 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1554 goto err; 1555 } 1556 s->s3->send_connection_binding = 1; 1557 p += n; 1558#ifdef OPENSSL_RI_DEBUG 1559 fprintf(stderr, "SCSV received by server\n"); 1560#endif 1561 continue; 1562 } 1563 1564 /* Check for TLS_FALLBACK_SCSV */ 1565 if ((n != 3 || !p[0]) && 1566 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1567 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1568 /* 1569 * The SCSV indicates that the client previously tried a higher 1570 * version. Fail if the current version is an unexpected 1571 * downgrade. 1572 */ 1573 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1574 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1575 SSL_R_INAPPROPRIATE_FALLBACK); 1576 if (s->s3) 1577 ssl3_send_alert(s, SSL3_AL_FATAL, 1578 SSL_AD_INAPPROPRIATE_FALLBACK); 1579 goto err; 1580 } 1581 p += n; 1582 continue; 1583 } 1584 1585 c = ssl_get_cipher_by_char(s, p); 1586 p += n; 1587 if (c != NULL) { 1588 if (!sk_SSL_CIPHER_push(sk, c)) { 1589 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1590 goto err; 1591 } 1592 } 1593 } 1594 1595 if (skp != NULL) 1596 *skp = sk; 1597 return (sk); 1598 err: 1599 if ((skp == NULL) || (*skp == NULL)) 1600 sk_SSL_CIPHER_free(sk); 1601 return (NULL); 1602} 1603 1604#ifndef OPENSSL_NO_TLSEXT 1605/** return a servername extension value if provided in Client Hello, or NULL. 1606 * So far, only host_name types are defined (RFC 3546). 1607 */ 1608 1609const char *SSL_get_servername(const SSL *s, const int type) 1610{ 1611 if (type != TLSEXT_NAMETYPE_host_name) 1612 return NULL; 1613 1614 return s->session && !s->tlsext_hostname ? 1615 s->session->tlsext_hostname : s->tlsext_hostname; 1616} 1617 1618int SSL_get_servername_type(const SSL *s) 1619{ 1620 if (s->session 1621 && (!s->tlsext_hostname ? s->session-> 1622 tlsext_hostname : s->tlsext_hostname)) 1623 return TLSEXT_NAMETYPE_host_name; 1624 return -1; 1625} 1626 1627/* 1628 * SSL_select_next_proto implements the standard protocol selection. It is 1629 * expected that this function is called from the callback set by 1630 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1631 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1632 * not included in the length. A byte string of length 0 is invalid. No byte 1633 * string may be truncated. The current, but experimental algorithm for 1634 * selecting the protocol is: 1) If the server doesn't support NPN then this 1635 * is indicated to the callback. In this case, the client application has to 1636 * abort the connection or have a default application level protocol. 2) If 1637 * the server supports NPN, but advertises an empty list then the client 1638 * selects the first protcol in its list, but indicates via the API that this 1639 * fallback case was enacted. 3) Otherwise, the client finds the first 1640 * protocol in the server's list that it supports and selects this protocol. 1641 * This is because it's assumed that the server has better information about 1642 * which protocol a client should use. 4) If the client doesn't support any 1643 * of the server's advertised protocols, then this is treated the same as 1644 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1645 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1646 */ 1647int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1648 const unsigned char *server, 1649 unsigned int server_len, 1650 const unsigned char *client, 1651 unsigned int client_len) 1652{ 1653 unsigned int i, j; 1654 const unsigned char *result; 1655 int status = OPENSSL_NPN_UNSUPPORTED; 1656 1657 /* 1658 * For each protocol in server preference order, see if we support it. 1659 */ 1660 for (i = 0; i < server_len;) { 1661 for (j = 0; j < client_len;) { 1662 if (server[i] == client[j] && 1663 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1664 /* We found a match */ 1665 result = &server[i]; 1666 status = OPENSSL_NPN_NEGOTIATED; 1667 goto found; 1668 } 1669 j += client[j]; 1670 j++; 1671 } 1672 i += server[i]; 1673 i++; 1674 } 1675 1676 /* There's no overlap between our protocols and the server's list. */ 1677 result = client; 1678 status = OPENSSL_NPN_NO_OVERLAP; 1679 1680 found: 1681 *out = (unsigned char *)result + 1; 1682 *outlen = result[0]; 1683 return status; 1684} 1685 1686# ifndef OPENSSL_NO_NEXTPROTONEG 1687/* 1688 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1689 * client's requested protocol for this connection and returns 0. If the 1690 * client didn't request any protocol, then *data is set to NULL. Note that 1691 * the client can request any protocol it chooses. The value returned from 1692 * this function need not be a member of the list of supported protocols 1693 * provided by the callback. 1694 */ 1695void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1696 unsigned *len) 1697{ 1698 *data = s->next_proto_negotiated; 1699 if (!*data) { 1700 *len = 0; 1701 } else { 1702 *len = s->next_proto_negotiated_len; 1703 } 1704} 1705 1706/* 1707 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1708 * a TLS server needs a list of supported protocols for Next Protocol 1709 * Negotiation. The returned list must be in wire format. The list is 1710 * returned by setting |out| to point to it and |outlen| to its length. This 1711 * memory will not be modified, but one should assume that the SSL* keeps a 1712 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1713 * wishes to advertise. Otherwise, no such extension will be included in the 1714 * ServerHello. 1715 */ 1716void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1717 int (*cb) (SSL *ssl, 1718 const unsigned char 1719 **out, 1720 unsigned int *outlen, 1721 void *arg), void *arg) 1722{ 1723 ctx->next_protos_advertised_cb = cb; 1724 ctx->next_protos_advertised_cb_arg = arg; 1725} 1726 1727/* 1728 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1729 * client needs to select a protocol from the server's provided list. |out| 1730 * must be set to point to the selected protocol (which may be within |in|). 1731 * The length of the protocol name must be written into |outlen|. The 1732 * server's advertised protocols are provided in |in| and |inlen|. The 1733 * callback can assume that |in| is syntactically valid. The client must 1734 * select a protocol. It is fatal to the connection if this callback returns 1735 * a value other than SSL_TLSEXT_ERR_OK. 1736 */ 1737void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1738 int (*cb) (SSL *s, unsigned char **out, 1739 unsigned char *outlen, 1740 const unsigned char *in, 1741 unsigned int inlen, 1742 void *arg), void *arg) 1743{ 1744 ctx->next_proto_select_cb = cb; 1745 ctx->next_proto_select_cb_arg = arg; 1746} 1747# endif 1748 1749/* 1750 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1751 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1752 * length-prefixed strings). Returns 0 on success. 1753 */ 1754int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1755 unsigned protos_len) 1756{ 1757 if (ctx->alpn_client_proto_list) 1758 OPENSSL_free(ctx->alpn_client_proto_list); 1759 1760 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1761 if (!ctx->alpn_client_proto_list) 1762 return 1; 1763 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1764 ctx->alpn_client_proto_list_len = protos_len; 1765 1766 return 0; 1767} 1768 1769/* 1770 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1771 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1772 * length-prefixed strings). Returns 0 on success. 1773 */ 1774int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1775 unsigned protos_len) 1776{ 1777 if (ssl->alpn_client_proto_list) 1778 OPENSSL_free(ssl->alpn_client_proto_list); 1779 1780 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1781 if (!ssl->alpn_client_proto_list) 1782 return 1; 1783 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1784 ssl->alpn_client_proto_list_len = protos_len; 1785 1786 return 0; 1787} 1788 1789/* 1790 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is 1791 * called during ClientHello processing in order to select an ALPN protocol 1792 * from the client's list of offered protocols. 1793 */ 1794void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, 1795 int (*cb) (SSL *ssl, 1796 const unsigned char **out, 1797 unsigned char *outlen, 1798 const unsigned char *in, 1799 unsigned int inlen, 1800 void *arg), void *arg) 1801{ 1802 ctx->alpn_select_cb = cb; 1803 ctx->alpn_select_cb_arg = arg; 1804} 1805 1806/* 1807 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from 1808 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name 1809 * (not including the leading length-prefix byte). If the server didn't 1810 * respond with a negotiated protocol then |*len| will be zero. 1811 */ 1812void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1813 unsigned *len) 1814{ 1815 *data = NULL; 1816 if (ssl->s3) 1817 *data = ssl->s3->alpn_selected; 1818 if (*data == NULL) 1819 *len = 0; 1820 else 1821 *len = ssl->s3->alpn_selected_len; 1822} 1823 1824#endif /* !OPENSSL_NO_TLSEXT */ 1825 1826int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1827 const char *label, size_t llen, 1828 const unsigned char *context, size_t contextlen, 1829 int use_context) 1830{ 1831 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) 1832 return -1; 1833 1834 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1835 llen, context, 1836 contextlen, use_context); 1837} 1838 1839static unsigned long ssl_session_hash(const SSL_SESSION *a) 1840{ 1841 const unsigned char *session_id = a->session_id; 1842 unsigned long l; 1843 unsigned char tmp_storage[4]; 1844 1845 if (a->session_id_length < sizeof(tmp_storage)) { 1846 memset(tmp_storage, 0, sizeof(tmp_storage)); 1847 memcpy(tmp_storage, a->session_id, a->session_id_length); 1848 session_id = tmp_storage; 1849 } 1850 1851 l = (unsigned long) 1852 ((unsigned long)session_id[0]) | 1853 ((unsigned long)session_id[1] << 8L) | 1854 ((unsigned long)session_id[2] << 16L) | 1855 ((unsigned long)session_id[3] << 24L); 1856 return (l); 1857} 1858 1859/* 1860 * NB: If this function (or indeed the hash function which uses a sort of 1861 * coarser function than this one) is changed, ensure 1862 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1863 * being able to construct an SSL_SESSION that will collide with any existing 1864 * session with a matching session ID. 1865 */ 1866static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1867{ 1868 if (a->ssl_version != b->ssl_version) 1869 return (1); 1870 if (a->session_id_length != b->session_id_length) 1871 return (1); 1872 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1873} 1874 1875/* 1876 * These wrapper functions should remain rather than redeclaring 1877 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1878 * variable. The reason is that the functions aren't static, they're exposed 1879 * via ssl.h. 1880 */ 1881static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1882static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1883 1884SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1885{ 1886 SSL_CTX *ret = NULL; 1887 1888 if (meth == NULL) { 1889 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1890 return (NULL); 1891 } 1892#ifdef OPENSSL_FIPS 1893 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1894 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1895 return NULL; 1896 } 1897#endif 1898 1899 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1900 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1901 goto err; 1902 } 1903 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1904 if (ret == NULL) 1905 goto err; 1906 1907 memset(ret, 0, sizeof(SSL_CTX)); 1908 1909 ret->method = meth; 1910 1911 ret->cert_store = NULL; 1912 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1913 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1914 ret->session_cache_head = NULL; 1915 ret->session_cache_tail = NULL; 1916 1917 /* We take the system default */ 1918 ret->session_timeout = meth->get_timeout(); 1919 1920 ret->new_session_cb = 0; 1921 ret->remove_session_cb = 0; 1922 ret->get_session_cb = 0; 1923 ret->generate_session_id = 0; 1924 1925 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1926 1927 ret->references = 1; 1928 ret->quiet_shutdown = 0; 1929 1930/* ret->cipher=NULL;*/ 1931/*- 1932 ret->s2->challenge=NULL; 1933 ret->master_key=NULL; 1934 ret->key_arg=NULL; 1935 ret->s2->conn_id=NULL; */ 1936 1937 ret->info_callback = NULL; 1938 1939 ret->app_verify_callback = 0; 1940 ret->app_verify_arg = NULL; 1941 1942 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1943 ret->read_ahead = 0; 1944 ret->msg_callback = 0; 1945 ret->msg_callback_arg = NULL; 1946 ret->verify_mode = SSL_VERIFY_NONE; 1947#if 0 1948 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1949#endif 1950 ret->sid_ctx_length = 0; 1951 ret->default_verify_callback = NULL; 1952 if ((ret->cert = ssl_cert_new()) == NULL) 1953 goto err; 1954 1955 ret->default_passwd_callback = 0; 1956 ret->default_passwd_callback_userdata = NULL; 1957 ret->client_cert_cb = 0; 1958 ret->app_gen_cookie_cb = 0; 1959 ret->app_verify_cookie_cb = 0; 1960 1961 ret->sessions = lh_SSL_SESSION_new(); 1962 if (ret->sessions == NULL) 1963 goto err; 1964 ret->cert_store = X509_STORE_new(); 1965 if (ret->cert_store == NULL) 1966 goto err; 1967 1968 ssl_create_cipher_list(ret->method, 1969 &ret->cipher_list, &ret->cipher_list_by_id, 1970 meth->version == 1971 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, 1972 ret->cert); 1973 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1974 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1975 goto err2; 1976 } 1977 1978 ret->param = X509_VERIFY_PARAM_new(); 1979 if (!ret->param) 1980 goto err; 1981 1982 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1983 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1984 goto err2; 1985 } 1986 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1987 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1988 goto err2; 1989 } 1990 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1991 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1992 goto err2; 1993 } 1994 1995 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1996 goto err; 1997 1998 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1999 2000 ret->extra_certs = NULL; 2001 /* No compression for DTLS */ 2002 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) 2003 ret->comp_methods = SSL_COMP_get_compression_methods(); 2004 2005 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2006 2007#ifndef OPENSSL_NO_TLSEXT 2008 ret->tlsext_servername_callback = 0; 2009 ret->tlsext_servername_arg = NULL; 2010 /* Setup RFC4507 ticket keys */ 2011 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0) 2012 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 2013 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 2014 ret->options |= SSL_OP_NO_TICKET; 2015 2016 ret->tlsext_status_cb = 0; 2017 ret->tlsext_status_arg = NULL; 2018 2019# ifndef OPENSSL_NO_NEXTPROTONEG 2020 ret->next_protos_advertised_cb = 0; 2021 ret->next_proto_select_cb = 0; 2022# endif 2023#endif 2024#ifndef OPENSSL_NO_PSK 2025 ret->psk_identity_hint = NULL; 2026 ret->psk_client_callback = NULL; 2027 ret->psk_server_callback = NULL; 2028#endif 2029#ifndef OPENSSL_NO_SRP 2030 SSL_CTX_SRP_CTX_init(ret); 2031#endif 2032#ifndef OPENSSL_NO_BUF_FREELISTS 2033 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 2034 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2035 if (!ret->rbuf_freelist) 2036 goto err; 2037 ret->rbuf_freelist->chunklen = 0; 2038 ret->rbuf_freelist->len = 0; 2039 ret->rbuf_freelist->head = NULL; 2040 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2041 if (!ret->wbuf_freelist) 2042 goto err; 2043 ret->wbuf_freelist->chunklen = 0; 2044 ret->wbuf_freelist->len = 0; 2045 ret->wbuf_freelist->head = NULL; 2046#endif 2047#ifndef OPENSSL_NO_ENGINE 2048 ret->client_cert_engine = NULL; 2049# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2050# define eng_strx(x) #x 2051# define eng_str(x) eng_strx(x) 2052 /* Use specific client engine automatically... ignore errors */ 2053 { 2054 ENGINE *eng; 2055 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2056 if (!eng) { 2057 ERR_clear_error(); 2058 ENGINE_load_builtin_engines(); 2059 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2060 } 2061 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2062 ERR_clear_error(); 2063 } 2064# endif 2065#endif 2066 /* 2067 * Default is to connect to non-RI servers. When RI is more widely 2068 * deployed might change this. 2069 */ 2070 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2071 2072 /* 2073 * Disable SSLv2 by default, callers that want to enable SSLv2 will have to 2074 * explicitly clear this option via either of SSL_CTX_clear_options() or 2075 * SSL_clear_options(). 2076 */ 2077 ret->options |= SSL_OP_NO_SSLv2; 2078 2079 return (ret); 2080 err: 2081 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 2082 err2: 2083 if (ret != NULL) 2084 SSL_CTX_free(ret); 2085 return (NULL); 2086} 2087 2088#if 0 2089static void SSL_COMP_free(SSL_COMP *comp) 2090{ 2091 OPENSSL_free(comp); 2092} 2093#endif 2094 2095#ifndef OPENSSL_NO_BUF_FREELISTS 2096static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2097{ 2098 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2099 for (ent = list->head; ent; ent = next) { 2100 next = ent->next; 2101 OPENSSL_free(ent); 2102 } 2103 OPENSSL_free(list); 2104} 2105#endif 2106 2107void SSL_CTX_free(SSL_CTX *a) 2108{ 2109 int i; 2110 2111 if (a == NULL) 2112 return; 2113 2114 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 2115#ifdef REF_PRINT 2116 REF_PRINT("SSL_CTX", a); 2117#endif 2118 if (i > 0) 2119 return; 2120#ifdef REF_CHECK 2121 if (i < 0) { 2122 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 2123 abort(); /* ok */ 2124 } 2125#endif 2126 2127 if (a->param) 2128 X509_VERIFY_PARAM_free(a->param); 2129 2130 /* 2131 * Free internal session cache. However: the remove_cb() may reference 2132 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2133 * after the sessions were flushed. 2134 * As the ex_data handling routines might also touch the session cache, 2135 * the most secure solution seems to be: empty (flush) the cache, then 2136 * free ex_data, then finally free the cache. 2137 * (See ticket [openssl.org #212].) 2138 */ 2139 if (a->sessions != NULL) 2140 SSL_CTX_flush_sessions(a, 0); 2141 2142 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2143 2144 if (a->sessions != NULL) 2145 lh_SSL_SESSION_free(a->sessions); 2146 2147 if (a->cert_store != NULL) 2148 X509_STORE_free(a->cert_store); 2149 if (a->cipher_list != NULL) 2150 sk_SSL_CIPHER_free(a->cipher_list); 2151 if (a->cipher_list_by_id != NULL) 2152 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2153 if (a->cert != NULL) 2154 ssl_cert_free(a->cert); 2155 if (a->client_CA != NULL) 2156 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 2157 if (a->extra_certs != NULL) 2158 sk_X509_pop_free(a->extra_certs, X509_free); 2159#if 0 /* This should never be done, since it 2160 * removes a global database */ 2161 if (a->comp_methods != NULL) 2162 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 2163#else 2164 a->comp_methods = NULL; 2165#endif 2166 2167#ifndef OPENSSL_NO_SRTP 2168 if (a->srtp_profiles) 2169 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2170#endif 2171 2172#ifndef OPENSSL_NO_PSK 2173 if (a->psk_identity_hint) 2174 OPENSSL_free(a->psk_identity_hint); 2175#endif 2176#ifndef OPENSSL_NO_SRP 2177 SSL_CTX_SRP_CTX_free(a); 2178#endif 2179#ifndef OPENSSL_NO_ENGINE 2180 if (a->client_cert_engine) 2181 ENGINE_finish(a->client_cert_engine); 2182#endif 2183 2184#ifndef OPENSSL_NO_BUF_FREELISTS 2185 if (a->wbuf_freelist) 2186 ssl_buf_freelist_free(a->wbuf_freelist); 2187 if (a->rbuf_freelist) 2188 ssl_buf_freelist_free(a->rbuf_freelist); 2189#endif 2190#ifndef OPENSSL_NO_TLSEXT 2191# ifndef OPENSSL_NO_EC 2192 if (a->tlsext_ecpointformatlist) 2193 OPENSSL_free(a->tlsext_ecpointformatlist); 2194 if (a->tlsext_ellipticcurvelist) 2195 OPENSSL_free(a->tlsext_ellipticcurvelist); 2196# endif /* OPENSSL_NO_EC */ 2197 if (a->alpn_client_proto_list != NULL) 2198 OPENSSL_free(a->alpn_client_proto_list); 2199#endif 2200 2201 OPENSSL_free(a); 2202} 2203 2204void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2205{ 2206 ctx->default_passwd_callback = cb; 2207} 2208 2209void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2210{ 2211 ctx->default_passwd_callback_userdata = u; 2212} 2213 2214void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2215 int (*cb) (X509_STORE_CTX *, void *), 2216 void *arg) 2217{ 2218 ctx->app_verify_callback = cb; 2219 ctx->app_verify_arg = arg; 2220} 2221 2222void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2223 int (*cb) (int, X509_STORE_CTX *)) 2224{ 2225 ctx->verify_mode = mode; 2226 ctx->default_verify_callback = cb; 2227} 2228 2229void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2230{ 2231 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2232} 2233 2234void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), 2235 void *arg) 2236{ 2237 ssl_cert_set_cert_cb(c->cert, cb, arg); 2238} 2239 2240void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) 2241{ 2242 ssl_cert_set_cert_cb(s->cert, cb, arg); 2243} 2244 2245void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2246{ 2247 CERT_PKEY *cpk; 2248 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2249 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2250 int rsa_tmp_export, dh_tmp_export, kl; 2251 unsigned long mask_k, mask_a, emask_k, emask_a; 2252#ifndef OPENSSL_NO_ECDSA 2253 int have_ecc_cert, ecdsa_ok, ecc_pkey_size; 2254#endif 2255#ifndef OPENSSL_NO_ECDH 2256 int have_ecdh_tmp, ecdh_ok; 2257#endif 2258#ifndef OPENSSL_NO_EC 2259 X509 *x = NULL; 2260 EVP_PKEY *ecc_pkey = NULL; 2261 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2262#endif 2263 if (c == NULL) 2264 return; 2265 2266 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2267 2268#ifndef OPENSSL_NO_RSA 2269 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2270 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2271 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2272#else 2273 rsa_tmp = rsa_tmp_export = 0; 2274#endif 2275#ifndef OPENSSL_NO_DH 2276 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2277 dh_tmp_export = (c->dh_tmp_cb != NULL || 2278 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2279#else 2280 dh_tmp = dh_tmp_export = 0; 2281#endif 2282 2283#ifndef OPENSSL_NO_ECDH 2284 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto); 2285#endif 2286 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2287 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID; 2288 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2289 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2290 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2291 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2292 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2293 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2294 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID; 2295 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2296 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2297/* FIX THIS EAY EAY EAY */ 2298 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID; 2299 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2300 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2301#ifndef OPENSSL_NO_EC 2302 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID; 2303#endif 2304 mask_k = 0; 2305 mask_a = 0; 2306 emask_k = 0; 2307 emask_a = 0; 2308 2309#ifdef CIPHER_DEBUG 2310 fprintf(stderr, 2311 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2312 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2313 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2314#endif 2315 2316 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2317 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2318 mask_k |= SSL_kGOST; 2319 mask_a |= SSL_aGOST01; 2320 } 2321 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2322 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2323 mask_k |= SSL_kGOST; 2324 mask_a |= SSL_aGOST94; 2325 } 2326 2327 if (rsa_enc || (rsa_tmp && rsa_sign)) 2328 mask_k |= SSL_kRSA; 2329 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2330 emask_k |= SSL_kRSA; 2331 2332#if 0 2333 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2334 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2335 mask_k |= SSL_kEDH; 2336 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2337 (rsa_enc || rsa_sign || dsa_sign)) 2338 emask_k |= SSL_kEDH; 2339#endif 2340 2341 if (dh_tmp_export) 2342 emask_k |= SSL_kEDH; 2343 2344 if (dh_tmp) 2345 mask_k |= SSL_kEDH; 2346 2347 if (dh_rsa) 2348 mask_k |= SSL_kDHr; 2349 if (dh_rsa_export) 2350 emask_k |= SSL_kDHr; 2351 2352 if (dh_dsa) 2353 mask_k |= SSL_kDHd; 2354 if (dh_dsa_export) 2355 emask_k |= SSL_kDHd; 2356 2357 if (mask_k & (SSL_kDHr | SSL_kDHd)) 2358 mask_a |= SSL_aDH; 2359 2360 if (rsa_enc || rsa_sign) { 2361 mask_a |= SSL_aRSA; 2362 emask_a |= SSL_aRSA; 2363 } 2364 2365 if (dsa_sign) { 2366 mask_a |= SSL_aDSS; 2367 emask_a |= SSL_aDSS; 2368 } 2369 2370 mask_a |= SSL_aNULL; 2371 emask_a |= SSL_aNULL; 2372 2373#ifndef OPENSSL_NO_KRB5 2374 mask_k |= SSL_kKRB5; 2375 mask_a |= SSL_aKRB5; 2376 emask_k |= SSL_kKRB5; 2377 emask_a |= SSL_aKRB5; 2378#endif 2379 2380 /* 2381 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2382 * depending on the key usage extension. 2383 */ 2384#ifndef OPENSSL_NO_EC 2385 if (have_ecc_cert) { 2386 cpk = &c->pkeys[SSL_PKEY_ECC]; 2387 x = cpk->x509; 2388 /* This call populates extension flags (ex_flags) */ 2389 X509_check_purpose(x, -1, 0); 2390# ifndef OPENSSL_NO_ECDH 2391 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2392 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2393# endif 2394 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2395 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2396 if (!(cpk->valid_flags & CERT_PKEY_SIGN)) 2397 ecdsa_ok = 0; 2398 ecc_pkey = X509_get_pubkey(x); 2399 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2400 EVP_PKEY_free(ecc_pkey); 2401 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2402 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2403 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2404 } 2405# ifndef OPENSSL_NO_ECDH 2406 if (ecdh_ok) { 2407 2408 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2409 mask_k |= SSL_kECDHr; 2410 mask_a |= SSL_aECDH; 2411 if (ecc_pkey_size <= 163) { 2412 emask_k |= SSL_kECDHr; 2413 emask_a |= SSL_aECDH; 2414 } 2415 } 2416 2417 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2418 mask_k |= SSL_kECDHe; 2419 mask_a |= SSL_aECDH; 2420 if (ecc_pkey_size <= 163) { 2421 emask_k |= SSL_kECDHe; 2422 emask_a |= SSL_aECDH; 2423 } 2424 } 2425 } 2426# endif 2427# ifndef OPENSSL_NO_ECDSA 2428 if (ecdsa_ok) { 2429 mask_a |= SSL_aECDSA; 2430 emask_a |= SSL_aECDSA; 2431 } 2432# endif 2433 } 2434#endif 2435 2436#ifndef OPENSSL_NO_ECDH 2437 if (have_ecdh_tmp) { 2438 mask_k |= SSL_kEECDH; 2439 emask_k |= SSL_kEECDH; 2440 } 2441#endif 2442 2443#ifndef OPENSSL_NO_PSK 2444 mask_k |= SSL_kPSK; 2445 mask_a |= SSL_aPSK; 2446 emask_k |= SSL_kPSK; 2447 emask_a |= SSL_aPSK; 2448#endif 2449 2450 c->mask_k = mask_k; 2451 c->mask_a = mask_a; 2452 c->export_mask_k = emask_k; 2453 c->export_mask_a = emask_a; 2454 c->valid = 1; 2455} 2456 2457/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2458#define ku_reject(x, usage) \ 2459 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2460 2461#ifndef OPENSSL_NO_EC 2462 2463int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2464{ 2465 unsigned long alg_k, alg_a; 2466 EVP_PKEY *pkey = NULL; 2467 int keysize = 0; 2468 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2469 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2470 2471 alg_k = cs->algorithm_mkey; 2472 alg_a = cs->algorithm_auth; 2473 2474 if (SSL_C_IS_EXPORT(cs)) { 2475 /* ECDH key length in export ciphers must be <= 163 bits */ 2476 pkey = X509_get_pubkey(x); 2477 if (pkey == NULL) 2478 return 0; 2479 keysize = EVP_PKEY_bits(pkey); 2480 EVP_PKEY_free(pkey); 2481 if (keysize > 163) 2482 return 0; 2483 } 2484 2485 /* This call populates the ex_flags field correctly */ 2486 X509_check_purpose(x, -1, 0); 2487 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2488 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2489 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2490 } 2491 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2492 /* key usage, if present, must allow key agreement */ 2493 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2494 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2495 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2496 return 0; 2497 } 2498 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2499 /* signature alg must be ECDSA */ 2500 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2501 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2502 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2503 return 0; 2504 } 2505 } 2506 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2507 /* signature alg must be RSA */ 2508 2509 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2510 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2511 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2512 return 0; 2513 } 2514 } 2515 } 2516 if (alg_a & SSL_aECDSA) { 2517 /* key usage, if present, must allow signing */ 2518 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2519 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2520 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2521 return 0; 2522 } 2523 } 2524 2525 return 1; /* all checks are ok */ 2526} 2527 2528#endif 2529 2530static int ssl_get_server_cert_index(const SSL *s) 2531{ 2532 int idx; 2533 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); 2534 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) 2535 idx = SSL_PKEY_RSA_SIGN; 2536 if (idx == -1) 2537 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); 2538 return idx; 2539} 2540 2541CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2542{ 2543 CERT *c; 2544 int i; 2545 2546 c = s->cert; 2547 if (!s->s3 || !s->s3->tmp.new_cipher) 2548 return NULL; 2549 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2550 2551#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2552 /* 2553 * Broken protocol test: return last used certificate: which may mismatch 2554 * the one expected. 2555 */ 2556 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2557 return c->key; 2558#endif 2559 2560 i = ssl_get_server_cert_index(s); 2561 2562 /* This may or may not be an error. */ 2563 if (i < 0) 2564 return NULL; 2565 2566 /* May be NULL. */ 2567 return &c->pkeys[i]; 2568} 2569 2570EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2571 const EVP_MD **pmd) 2572{ 2573 unsigned long alg_a; 2574 CERT *c; 2575 int idx = -1; 2576 2577 alg_a = cipher->algorithm_auth; 2578 c = s->cert; 2579 2580#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2581 /* 2582 * Broken protocol test: use last key: which may mismatch the one 2583 * expected. 2584 */ 2585 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2586 idx = c->key - c->pkeys; 2587 else 2588#endif 2589 2590 if ((alg_a & SSL_aDSS) && 2591 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2592 idx = SSL_PKEY_DSA_SIGN; 2593 else if (alg_a & SSL_aRSA) { 2594 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2595 idx = SSL_PKEY_RSA_SIGN; 2596 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2597 idx = SSL_PKEY_RSA_ENC; 2598 } else if ((alg_a & SSL_aECDSA) && 2599 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2600 idx = SSL_PKEY_ECC; 2601 if (idx == -1) { 2602 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2603 return (NULL); 2604 } 2605 if (pmd) 2606 *pmd = c->pkeys[idx].digest; 2607 return c->pkeys[idx].privatekey; 2608} 2609 2610#ifndef OPENSSL_NO_TLSEXT 2611int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, 2612 size_t *serverinfo_length) 2613{ 2614 CERT *c = NULL; 2615 int i = 0; 2616 *serverinfo_length = 0; 2617 2618 c = s->cert; 2619 i = ssl_get_server_cert_index(s); 2620 2621 if (i == -1) 2622 return 0; 2623 if (c->pkeys[i].serverinfo == NULL) 2624 return 0; 2625 2626 *serverinfo = c->pkeys[i].serverinfo; 2627 *serverinfo_length = c->pkeys[i].serverinfo_length; 2628 return 1; 2629} 2630#endif 2631 2632void ssl_update_cache(SSL *s, int mode) 2633{ 2634 int i; 2635 2636 /* 2637 * If the session_id_length is 0, we are not supposed to cache it, and it 2638 * would be rather hard to do anyway :-) 2639 */ 2640 if (s->session->session_id_length == 0) 2641 return; 2642 2643 i = s->session_ctx->session_cache_mode; 2644 if ((i & mode) && (!s->hit) 2645 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2646 || SSL_CTX_add_session(s->session_ctx, s->session)) 2647 && (s->session_ctx->new_session_cb != NULL)) { 2648 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2649 if (!s->session_ctx->new_session_cb(s, s->session)) 2650 SSL_SESSION_free(s->session); 2651 } 2652 2653 /* auto flush every 255 connections */ 2654 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2655 if ((((mode & SSL_SESS_CACHE_CLIENT) 2656 ? s->session_ctx->stats.sess_connect_good 2657 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2658 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2659 } 2660 } 2661} 2662 2663const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) 2664{ 2665 return ctx->method; 2666} 2667 2668const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2669{ 2670 return (s->method); 2671} 2672 2673int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2674{ 2675 int conn = -1; 2676 int ret = 1; 2677 2678 if (s->method != meth) { 2679 if (s->handshake_func != NULL) 2680 conn = (s->handshake_func == s->method->ssl_connect); 2681 2682 if (s->method->version == meth->version) 2683 s->method = meth; 2684 else { 2685 s->method->ssl_free(s); 2686 s->method = meth; 2687 ret = s->method->ssl_new(s); 2688 } 2689 2690 if (conn == 1) 2691 s->handshake_func = meth->ssl_connect; 2692 else if (conn == 0) 2693 s->handshake_func = meth->ssl_accept; 2694 } 2695 return (ret); 2696} 2697 2698int SSL_get_error(const SSL *s, int i) 2699{ 2700 int reason; 2701 unsigned long l; 2702 BIO *bio; 2703 2704 if (i > 0) 2705 return (SSL_ERROR_NONE); 2706 2707 /* 2708 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2709 * where we do encode the error 2710 */ 2711 if ((l = ERR_peek_error()) != 0) { 2712 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2713 return (SSL_ERROR_SYSCALL); 2714 else 2715 return (SSL_ERROR_SSL); 2716 } 2717 2718 if ((i < 0) && SSL_want_read(s)) { 2719 bio = SSL_get_rbio(s); 2720 if (BIO_should_read(bio)) 2721 return (SSL_ERROR_WANT_READ); 2722 else if (BIO_should_write(bio)) 2723 /* 2724 * This one doesn't make too much sense ... We never try to write 2725 * to the rbio, and an application program where rbio and wbio 2726 * are separate couldn't even know what it should wait for. 2727 * However if we ever set s->rwstate incorrectly (so that we have 2728 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2729 * wbio *are* the same, this test works around that bug; so it 2730 * might be safer to keep it. 2731 */ 2732 return (SSL_ERROR_WANT_WRITE); 2733 else if (BIO_should_io_special(bio)) { 2734 reason = BIO_get_retry_reason(bio); 2735 if (reason == BIO_RR_CONNECT) 2736 return (SSL_ERROR_WANT_CONNECT); 2737 else if (reason == BIO_RR_ACCEPT) 2738 return (SSL_ERROR_WANT_ACCEPT); 2739 else 2740 return (SSL_ERROR_SYSCALL); /* unknown */ 2741 } 2742 } 2743 2744 if ((i < 0) && SSL_want_write(s)) { 2745 bio = SSL_get_wbio(s); 2746 if (BIO_should_write(bio)) 2747 return (SSL_ERROR_WANT_WRITE); 2748 else if (BIO_should_read(bio)) 2749 /* 2750 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2751 */ 2752 return (SSL_ERROR_WANT_READ); 2753 else if (BIO_should_io_special(bio)) { 2754 reason = BIO_get_retry_reason(bio); 2755 if (reason == BIO_RR_CONNECT) 2756 return (SSL_ERROR_WANT_CONNECT); 2757 else if (reason == BIO_RR_ACCEPT) 2758 return (SSL_ERROR_WANT_ACCEPT); 2759 else 2760 return (SSL_ERROR_SYSCALL); 2761 } 2762 } 2763 if ((i < 0) && SSL_want_x509_lookup(s)) { 2764 return (SSL_ERROR_WANT_X509_LOOKUP); 2765 } 2766 2767 if (i == 0) { 2768 if (s->version == SSL2_VERSION) { 2769 /* assume it is the socket being closed */ 2770 return (SSL_ERROR_ZERO_RETURN); 2771 } else { 2772 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2773 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2774 return (SSL_ERROR_ZERO_RETURN); 2775 } 2776 } 2777 return (SSL_ERROR_SYSCALL); 2778} 2779 2780int SSL_do_handshake(SSL *s) 2781{ 2782 int ret = 1; 2783 2784 if (s->handshake_func == NULL) { 2785 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2786 return (-1); 2787 } 2788 2789 s->method->ssl_renegotiate_check(s); 2790 2791 if (SSL_in_init(s) || SSL_in_before(s)) { 2792 ret = s->handshake_func(s); 2793 } 2794 return (ret); 2795} 2796 2797/* 2798 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2799 * calls will reset it 2800 */ 2801void SSL_set_accept_state(SSL *s) 2802{ 2803 s->server = 1; 2804 s->shutdown = 0; 2805 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2806 s->handshake_func = s->method->ssl_accept; 2807 /* clear the current cipher */ 2808 ssl_clear_cipher_ctx(s); 2809 ssl_clear_hash_ctx(&s->read_hash); 2810 ssl_clear_hash_ctx(&s->write_hash); 2811} 2812 2813void SSL_set_connect_state(SSL *s) 2814{ 2815 s->server = 0; 2816 s->shutdown = 0; 2817 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2818 s->handshake_func = s->method->ssl_connect; 2819 /* clear the current cipher */ 2820 ssl_clear_cipher_ctx(s); 2821 ssl_clear_hash_ctx(&s->read_hash); 2822 ssl_clear_hash_ctx(&s->write_hash); 2823} 2824 2825int ssl_undefined_function(SSL *s) 2826{ 2827 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2828 return (0); 2829} 2830 2831int ssl_undefined_void_function(void) 2832{ 2833 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2834 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2835 return (0); 2836} 2837 2838int ssl_undefined_const_function(const SSL *s) 2839{ 2840 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2841 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2842 return (0); 2843} 2844 2845SSL_METHOD *ssl_bad_method(int ver) 2846{ 2847 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2848 return (NULL); 2849} 2850 2851const char *SSL_get_version(const SSL *s) 2852{ 2853 if (s->version == TLS1_2_VERSION) 2854 return ("TLSv1.2"); 2855 else if (s->version == TLS1_1_VERSION) 2856 return ("TLSv1.1"); 2857 else if (s->version == TLS1_VERSION) 2858 return ("TLSv1"); 2859 else if (s->version == SSL3_VERSION) 2860 return ("SSLv3"); 2861 else if (s->version == SSL2_VERSION) 2862 return ("SSLv2"); 2863 else if (s->version == DTLS1_BAD_VER) 2864 return ("DTLSv0.9"); 2865 else if (s->version == DTLS1_VERSION) 2866 return ("DTLSv1"); 2867 else if (s->version == DTLS1_2_VERSION) 2868 return ("DTLSv1.2"); 2869 else 2870 return ("unknown"); 2871} 2872 2873SSL *SSL_dup(SSL *s) 2874{ 2875 STACK_OF(X509_NAME) *sk; 2876 X509_NAME *xn; 2877 SSL *ret; 2878 int i; 2879 2880 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2881 return (NULL); 2882 2883 ret->version = s->version; 2884 ret->type = s->type; 2885 ret->method = s->method; 2886 2887 if (s->session != NULL) { 2888 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2889 SSL_copy_session_id(ret, s); 2890 } else { 2891 /* 2892 * No session has been established yet, so we have to expect that 2893 * s->cert or ret->cert will be changed later -- they should not both 2894 * point to the same object, and thus we can't use 2895 * SSL_copy_session_id. 2896 */ 2897 2898 ret->method->ssl_free(ret); 2899 ret->method = s->method; 2900 ret->method->ssl_new(ret); 2901 2902 if (s->cert != NULL) { 2903 if (ret->cert != NULL) { 2904 ssl_cert_free(ret->cert); 2905 } 2906 ret->cert = ssl_cert_dup(s->cert); 2907 if (ret->cert == NULL) 2908 goto err; 2909 } 2910 2911 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2912 } 2913 2914 ret->options = s->options; 2915 ret->mode = s->mode; 2916 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2917 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2918 ret->msg_callback = s->msg_callback; 2919 ret->msg_callback_arg = s->msg_callback_arg; 2920 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2921 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2922 ret->generate_session_id = s->generate_session_id; 2923 2924 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2925 2926 ret->debug = s->debug; 2927 2928 /* copy app data, a little dangerous perhaps */ 2929 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2930 goto err; 2931 2932 /* setup rbio, and wbio */ 2933 if (s->rbio != NULL) { 2934 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2935 goto err; 2936 } 2937 if (s->wbio != NULL) { 2938 if (s->wbio != s->rbio) { 2939 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2940 goto err; 2941 } else 2942 ret->wbio = ret->rbio; 2943 } 2944 ret->rwstate = s->rwstate; 2945 ret->in_handshake = s->in_handshake; 2946 ret->handshake_func = s->handshake_func; 2947 ret->server = s->server; 2948 ret->renegotiate = s->renegotiate; 2949 ret->new_session = s->new_session; 2950 ret->quiet_shutdown = s->quiet_shutdown; 2951 ret->shutdown = s->shutdown; 2952 ret->state = s->state; /* SSL_dup does not really work at any state, 2953 * though */ 2954 ret->rstate = s->rstate; 2955 ret->init_num = 0; /* would have to copy ret->init_buf, 2956 * ret->init_msg, ret->init_num, 2957 * ret->init_off */ 2958 ret->hit = s->hit; 2959 2960 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2961 2962 /* dup the cipher_list and cipher_list_by_id stacks */ 2963 if (s->cipher_list != NULL) { 2964 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2965 goto err; 2966 } 2967 if (s->cipher_list_by_id != NULL) 2968 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2969 == NULL) 2970 goto err; 2971 2972 /* Dup the client_CA list */ 2973 if (s->client_CA != NULL) { 2974 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2975 goto err; 2976 ret->client_CA = sk; 2977 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2978 xn = sk_X509_NAME_value(sk, i); 2979 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2980 X509_NAME_free(xn); 2981 goto err; 2982 } 2983 } 2984 } 2985 2986 if (0) { 2987 err: 2988 if (ret != NULL) 2989 SSL_free(ret); 2990 ret = NULL; 2991 } 2992 return (ret); 2993} 2994 2995void ssl_clear_cipher_ctx(SSL *s) 2996{ 2997 if (s->enc_read_ctx != NULL) { 2998 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2999 OPENSSL_free(s->enc_read_ctx); 3000 s->enc_read_ctx = NULL; 3001 } 3002 if (s->enc_write_ctx != NULL) { 3003 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 3004 OPENSSL_free(s->enc_write_ctx); 3005 s->enc_write_ctx = NULL; 3006 } 3007#ifndef OPENSSL_NO_COMP 3008 if (s->expand != NULL) { 3009 COMP_CTX_free(s->expand); 3010 s->expand = NULL; 3011 } 3012 if (s->compress != NULL) { 3013 COMP_CTX_free(s->compress); 3014 s->compress = NULL; 3015 } 3016#endif 3017} 3018 3019X509 *SSL_get_certificate(const SSL *s) 3020{ 3021 if (s->cert != NULL) 3022 return (s->cert->key->x509); 3023 else 3024 return (NULL); 3025} 3026 3027EVP_PKEY *SSL_get_privatekey(const SSL *s) 3028{ 3029 if (s->cert != NULL) 3030 return (s->cert->key->privatekey); 3031 else 3032 return (NULL); 3033} 3034 3035X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3036{ 3037 if (ctx->cert != NULL) 3038 return ctx->cert->key->x509; 3039 else 3040 return NULL; 3041} 3042 3043EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3044{ 3045 if (ctx->cert != NULL) 3046 return ctx->cert->key->privatekey; 3047 else 3048 return NULL; 3049} 3050 3051const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3052{ 3053 if ((s->session != NULL) && (s->session->cipher != NULL)) 3054 return (s->session->cipher); 3055 return (NULL); 3056} 3057 3058#ifdef OPENSSL_NO_COMP 3059const COMP_METHOD *SSL_get_current_compression(SSL *s) 3060{ 3061 return NULL; 3062} 3063 3064const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3065{ 3066 return NULL; 3067} 3068#else 3069 3070const COMP_METHOD *SSL_get_current_compression(SSL *s) 3071{ 3072 if (s->compress != NULL) 3073 return (s->compress->meth); 3074 return (NULL); 3075} 3076 3077const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3078{ 3079 if (s->expand != NULL) 3080 return (s->expand->meth); 3081 return (NULL); 3082} 3083#endif 3084 3085int ssl_init_wbio_buffer(SSL *s, int push) 3086{ 3087 BIO *bbio; 3088 3089 if (s->bbio == NULL) { 3090 bbio = BIO_new(BIO_f_buffer()); 3091 if (bbio == NULL) 3092 return (0); 3093 s->bbio = bbio; 3094 } else { 3095 bbio = s->bbio; 3096 if (s->bbio == s->wbio) 3097 s->wbio = BIO_pop(s->wbio); 3098 } 3099 (void)BIO_reset(bbio); 3100/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3101 if (!BIO_set_read_buffer_size(bbio, 1)) { 3102 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 3103 return (0); 3104 } 3105 if (push) { 3106 if (s->wbio != bbio) 3107 s->wbio = BIO_push(bbio, s->wbio); 3108 } else { 3109 if (s->wbio == bbio) 3110 s->wbio = BIO_pop(bbio); 3111 } 3112 return (1); 3113} 3114 3115void ssl_free_wbio_buffer(SSL *s) 3116{ 3117 if (s->bbio == NULL) 3118 return; 3119 3120 if (s->bbio == s->wbio) { 3121 /* remove buffering */ 3122 s->wbio = BIO_pop(s->wbio); 3123#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 3124 * adding one more preprocessor symbol */ 3125 assert(s->wbio != NULL); 3126#endif 3127 } 3128 BIO_free(s->bbio); 3129 s->bbio = NULL; 3130} 3131 3132void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3133{ 3134 ctx->quiet_shutdown = mode; 3135} 3136 3137int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3138{ 3139 return (ctx->quiet_shutdown); 3140} 3141 3142void SSL_set_quiet_shutdown(SSL *s, int mode) 3143{ 3144 s->quiet_shutdown = mode; 3145} 3146 3147int SSL_get_quiet_shutdown(const SSL *s) 3148{ 3149 return (s->quiet_shutdown); 3150} 3151 3152void SSL_set_shutdown(SSL *s, int mode) 3153{ 3154 s->shutdown = mode; 3155} 3156 3157int SSL_get_shutdown(const SSL *s) 3158{ 3159 return (s->shutdown); 3160} 3161 3162int SSL_version(const SSL *s) 3163{ 3164 return (s->version); 3165} 3166 3167SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3168{ 3169 return (ssl->ctx); 3170} 3171 3172SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 3173{ 3174 CERT *ocert = ssl->cert; 3175 if (ssl->ctx == ctx) 3176 return ssl->ctx; 3177#ifndef OPENSSL_NO_TLSEXT 3178 if (ctx == NULL) 3179 ctx = ssl->initial_ctx; 3180#endif 3181 ssl->cert = ssl_cert_dup(ctx->cert); 3182 if (ocert) { 3183 int i; 3184 /* Preserve any already negotiated parameters */ 3185 if (ssl->server) { 3186 ssl->cert->peer_sigalgs = ocert->peer_sigalgs; 3187 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen; 3188 ocert->peer_sigalgs = NULL; 3189 ssl->cert->ciphers_raw = ocert->ciphers_raw; 3190 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen; 3191 ocert->ciphers_raw = NULL; 3192 } 3193 for (i = 0; i < SSL_PKEY_NUM; i++) { 3194 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 3195 } 3196#ifndef OPENSSL_NO_TLSEXT 3197 ssl->cert->alpn_proposed = ocert->alpn_proposed; 3198 ssl->cert->alpn_proposed_len = ocert->alpn_proposed_len; 3199 ocert->alpn_proposed = NULL; 3200 ssl->cert->alpn_sent = ocert->alpn_sent; 3201 3202 if (!custom_exts_copy_flags(&ssl->cert->srv_ext, &ocert->srv_ext)) 3203 return NULL; 3204#endif 3205 ssl_cert_free(ocert); 3206 } 3207 3208 /* 3209 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 3210 * so setter APIs must prevent invalid lengths from entering the system. 3211 */ 3212 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 3213 3214 /* 3215 * If the session ID context matches that of the parent SSL_CTX, 3216 * inherit it from the new SSL_CTX as well. If however the context does 3217 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 3218 * leave it unchanged. 3219 */ 3220 if ((ssl->ctx != NULL) && 3221 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 3222 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 3223 ssl->sid_ctx_length = ctx->sid_ctx_length; 3224 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3225 } 3226 3227 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 3228 if (ssl->ctx != NULL) 3229 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3230 ssl->ctx = ctx; 3231 3232 return (ssl->ctx); 3233} 3234 3235#ifndef OPENSSL_NO_STDIO 3236int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3237{ 3238 return (X509_STORE_set_default_paths(ctx->cert_store)); 3239} 3240 3241int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3242 const char *CApath) 3243{ 3244 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3245} 3246#endif 3247 3248void SSL_set_info_callback(SSL *ssl, 3249 void (*cb) (const SSL *ssl, int type, int val)) 3250{ 3251 ssl->info_callback = cb; 3252} 3253 3254/* 3255 * One compiler (Diab DCC) doesn't like argument names in returned function 3256 * pointer. 3257 */ 3258void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 3259 int /* type */ , 3260 int /* val */ ) { 3261 return ssl->info_callback; 3262} 3263 3264int SSL_state(const SSL *ssl) 3265{ 3266 return (ssl->state); 3267} 3268 3269void SSL_set_state(SSL *ssl, int state) 3270{ 3271 ssl->state = state; 3272} 3273 3274void SSL_set_verify_result(SSL *ssl, long arg) 3275{ 3276 ssl->verify_result = arg; 3277} 3278 3279long SSL_get_verify_result(const SSL *ssl) 3280{ 3281 return (ssl->verify_result); 3282} 3283 3284int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3285 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3286{ 3287 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3288 new_func, dup_func, free_func); 3289} 3290 3291int SSL_set_ex_data(SSL *s, int idx, void *arg) 3292{ 3293 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3294} 3295 3296void *SSL_get_ex_data(const SSL *s, int idx) 3297{ 3298 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3299} 3300 3301int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3302 CRYPTO_EX_dup *dup_func, 3303 CRYPTO_EX_free *free_func) 3304{ 3305 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3306 new_func, dup_func, free_func); 3307} 3308 3309int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3310{ 3311 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3312} 3313 3314void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3315{ 3316 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3317} 3318 3319int ssl_ok(SSL *s) 3320{ 3321 return (1); 3322} 3323 3324X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3325{ 3326 return (ctx->cert_store); 3327} 3328 3329void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3330{ 3331 if (ctx->cert_store != NULL) 3332 X509_STORE_free(ctx->cert_store); 3333 ctx->cert_store = store; 3334} 3335 3336int SSL_want(const SSL *s) 3337{ 3338 return (s->rwstate); 3339} 3340 3341/** 3342 * \brief Set the callback for generating temporary RSA keys. 3343 * \param ctx the SSL context. 3344 * \param cb the callback 3345 */ 3346 3347#ifndef OPENSSL_NO_RSA 3348void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3349 int is_export, 3350 int keylength)) 3351{ 3352 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3353} 3354 3355void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3356 int is_export, 3357 int keylength)) 3358{ 3359 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3360} 3361#endif 3362 3363#ifdef DOXYGEN 3364/** 3365 * \brief The RSA temporary key callback function. 3366 * \param ssl the SSL session. 3367 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3368 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3369 * of the required key in bits. 3370 * \return the temporary RSA key. 3371 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3372 */ 3373 3374RSA *cb(SSL *ssl, int is_export, int keylength) 3375{ 3376} 3377#endif 3378 3379/** 3380 * \brief Set the callback for generating temporary DH keys. 3381 * \param ctx the SSL context. 3382 * \param dh the callback 3383 */ 3384 3385#ifndef OPENSSL_NO_DH 3386void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3387 DH *(*dh) (SSL *ssl, int is_export, 3388 int keylength)) 3389{ 3390 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3391} 3392 3393void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3394 int keylength)) 3395{ 3396 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3397} 3398#endif 3399 3400#ifndef OPENSSL_NO_ECDH 3401void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3402 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3403 int keylength)) 3404{ 3405 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3406 (void (*)(void))ecdh); 3407} 3408 3409void SSL_set_tmp_ecdh_callback(SSL *ssl, 3410 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3411 int keylength)) 3412{ 3413 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3414} 3415#endif 3416 3417#ifndef OPENSSL_NO_PSK 3418int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3419{ 3420 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3421 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3422 SSL_R_DATA_LENGTH_TOO_LONG); 3423 return 0; 3424 } 3425 if (ctx->psk_identity_hint != NULL) 3426 OPENSSL_free(ctx->psk_identity_hint); 3427 if (identity_hint != NULL) { 3428 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3429 if (ctx->psk_identity_hint == NULL) 3430 return 0; 3431 } else 3432 ctx->psk_identity_hint = NULL; 3433 return 1; 3434} 3435 3436int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3437{ 3438 if (s == NULL) 3439 return 0; 3440 3441 if (s->session == NULL) 3442 return 1; /* session not created yet, ignored */ 3443 3444 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3445 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3446 return 0; 3447 } 3448 if (s->session->psk_identity_hint != NULL) 3449 OPENSSL_free(s->session->psk_identity_hint); 3450 if (identity_hint != NULL) { 3451 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3452 if (s->session->psk_identity_hint == NULL) 3453 return 0; 3454 } else 3455 s->session->psk_identity_hint = NULL; 3456 return 1; 3457} 3458 3459const char *SSL_get_psk_identity_hint(const SSL *s) 3460{ 3461 if (s == NULL || s->session == NULL) 3462 return NULL; 3463 return (s->session->psk_identity_hint); 3464} 3465 3466const char *SSL_get_psk_identity(const SSL *s) 3467{ 3468 if (s == NULL || s->session == NULL) 3469 return NULL; 3470 return (s->session->psk_identity); 3471} 3472 3473void SSL_set_psk_client_callback(SSL *s, 3474 unsigned int (*cb) (SSL *ssl, 3475 const char *hint, 3476 char *identity, 3477 unsigned int 3478 max_identity_len, 3479 unsigned char *psk, 3480 unsigned int 3481 max_psk_len)) 3482{ 3483 s->psk_client_callback = cb; 3484} 3485 3486void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3487 unsigned int (*cb) (SSL *ssl, 3488 const char *hint, 3489 char *identity, 3490 unsigned int 3491 max_identity_len, 3492 unsigned char *psk, 3493 unsigned int 3494 max_psk_len)) 3495{ 3496 ctx->psk_client_callback = cb; 3497} 3498 3499void SSL_set_psk_server_callback(SSL *s, 3500 unsigned int (*cb) (SSL *ssl, 3501 const char *identity, 3502 unsigned char *psk, 3503 unsigned int 3504 max_psk_len)) 3505{ 3506 s->psk_server_callback = cb; 3507} 3508 3509void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3510 unsigned int (*cb) (SSL *ssl, 3511 const char *identity, 3512 unsigned char *psk, 3513 unsigned int 3514 max_psk_len)) 3515{ 3516 ctx->psk_server_callback = cb; 3517} 3518#endif 3519 3520void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3521 void (*cb) (int write_p, int version, 3522 int content_type, const void *buf, 3523 size_t len, SSL *ssl, void *arg)) 3524{ 3525 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3526} 3527 3528void SSL_set_msg_callback(SSL *ssl, 3529 void (*cb) (int write_p, int version, 3530 int content_type, const void *buf, 3531 size_t len, SSL *ssl, void *arg)) 3532{ 3533 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3534} 3535 3536/* 3537 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3538 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3539 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3540 * allocated ctx; 3541 */ 3542 3543EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3544{ 3545 ssl_clear_hash_ctx(hash); 3546 *hash = EVP_MD_CTX_create(); 3547 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { 3548 EVP_MD_CTX_destroy(*hash); 3549 *hash = NULL; 3550 return NULL; 3551 } 3552 return *hash; 3553} 3554 3555void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3556{ 3557 3558 if (*hash) 3559 EVP_MD_CTX_destroy(*hash); 3560 *hash = NULL; 3561} 3562 3563void SSL_set_debug(SSL *s, int debug) 3564{ 3565 s->debug = debug; 3566} 3567 3568int SSL_cache_hit(SSL *s) 3569{ 3570 return s->hit; 3571} 3572 3573int SSL_is_server(SSL *s) 3574{ 3575 return s->server; 3576} 3577 3578#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3579# include "../crypto/bio/bss_file.c" 3580#endif 3581 3582IMPLEMENT_STACK_OF(SSL_CIPHER) 3583IMPLEMENT_STACK_OF(SSL_COMP) 3584IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3585