ssl_lib.c revision 340704
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) 1998-2018 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 size) 1408{ 1409 char *p; 1410 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk; 1411 SSL_CIPHER *c; 1412 int i; 1413 1414 if (!s->server 1415 || s->session == NULL 1416 || s->session->ciphers == NULL 1417 || size < 2) 1418 return NULL; 1419 1420 p = buf; 1421 clntsk = s->session->ciphers; 1422 srvrsk = SSL_get_ciphers(s); 1423 if (clntsk == NULL || srvrsk == NULL) 1424 return NULL; 1425 1426 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0) 1427 return NULL; 1428 1429 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) { 1430 int n; 1431 1432 c = sk_SSL_CIPHER_value(clntsk, i); 1433 if (sk_SSL_CIPHER_find(srvrsk, c) < 0) 1434 continue; 1435 1436 n = strlen(c->name); 1437 if (n + 1 > size) { 1438 if (p != buf) 1439 --p; 1440 *p = '\0'; 1441 return buf; 1442 } 1443 strcpy(p, c->name); 1444 p += n; 1445 *(p++) = ':'; 1446 size -= n + 1; 1447 } 1448 p[-1] = '\0'; 1449 return (buf); 1450} 1451 1452int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1453 unsigned char *p, 1454 int (*put_cb) (const SSL_CIPHER *, 1455 unsigned char *)) 1456{ 1457 int i, j = 0; 1458 SSL_CIPHER *c; 1459 CERT *ct = s->cert; 1460 unsigned char *q; 1461 int empty_reneg_info_scsv = !s->renegotiate; 1462 /* Set disabled masks for this session */ 1463 ssl_set_client_disabled(s); 1464 1465 if (sk == NULL) 1466 return (0); 1467 q = p; 1468 if (put_cb == NULL) 1469 put_cb = s->method->put_cipher_by_char; 1470 1471 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1472 c = sk_SSL_CIPHER_value(sk, i); 1473 /* Skip disabled ciphers */ 1474 if (c->algorithm_ssl & ct->mask_ssl || 1475 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a) 1476 continue; 1477#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 1478 if (c->id == SSL3_CK_SCSV) { 1479 if (!empty_reneg_info_scsv) 1480 continue; 1481 else 1482 empty_reneg_info_scsv = 0; 1483 } 1484#endif 1485 j = put_cb(c, p); 1486 p += j; 1487 } 1488 /* 1489 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1490 * applicable SCSVs. 1491 */ 1492 if (p != q) { 1493 if (empty_reneg_info_scsv) { 1494 static SSL_CIPHER scsv = { 1495 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1496 }; 1497 j = put_cb(&scsv, p); 1498 p += j; 1499#ifdef OPENSSL_RI_DEBUG 1500 fprintf(stderr, 1501 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1502#endif 1503 } 1504 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1505 static SSL_CIPHER scsv = { 1506 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1507 }; 1508 j = put_cb(&scsv, p); 1509 p += j; 1510 } 1511 } 1512 1513 return (p - q); 1514} 1515 1516STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1517 int num, 1518 STACK_OF(SSL_CIPHER) **skp) 1519{ 1520 const SSL_CIPHER *c; 1521 STACK_OF(SSL_CIPHER) *sk; 1522 int i, n; 1523 1524 if (s->s3) 1525 s->s3->send_connection_binding = 0; 1526 1527 n = ssl_put_cipher_by_char(s, NULL, NULL); 1528 if (n == 0 || (num % n) != 0) { 1529 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1530 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1531 return (NULL); 1532 } 1533 if ((skp == NULL) || (*skp == NULL)) { 1534 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1535 if(sk == NULL) { 1536 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1537 return NULL; 1538 } 1539 } else { 1540 sk = *skp; 1541 sk_SSL_CIPHER_zero(sk); 1542 } 1543 1544 if (s->cert->ciphers_raw) 1545 OPENSSL_free(s->cert->ciphers_raw); 1546 s->cert->ciphers_raw = BUF_memdup(p, num); 1547 if (s->cert->ciphers_raw == NULL) { 1548 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1549 goto err; 1550 } 1551 s->cert->ciphers_rawlen = (size_t)num; 1552 1553 for (i = 0; i < num; i += n) { 1554 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1555 if (s->s3 && (n != 3 || !p[0]) && 1556 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1557 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1558 /* SCSV fatal if renegotiating */ 1559 if (s->renegotiate) { 1560 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1561 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1562 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1563 goto err; 1564 } 1565 s->s3->send_connection_binding = 1; 1566 p += n; 1567#ifdef OPENSSL_RI_DEBUG 1568 fprintf(stderr, "SCSV received by server\n"); 1569#endif 1570 continue; 1571 } 1572 1573 /* Check for TLS_FALLBACK_SCSV */ 1574 if ((n != 3 || !p[0]) && 1575 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1576 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1577 /* 1578 * The SCSV indicates that the client previously tried a higher 1579 * version. Fail if the current version is an unexpected 1580 * downgrade. 1581 */ 1582 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1583 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1584 SSL_R_INAPPROPRIATE_FALLBACK); 1585 if (s->s3) 1586 ssl3_send_alert(s, SSL3_AL_FATAL, 1587 SSL_AD_INAPPROPRIATE_FALLBACK); 1588 goto err; 1589 } 1590 p += n; 1591 continue; 1592 } 1593 1594 c = ssl_get_cipher_by_char(s, p); 1595 p += n; 1596 if (c != NULL) { 1597 if (!sk_SSL_CIPHER_push(sk, c)) { 1598 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1599 goto err; 1600 } 1601 } 1602 } 1603 1604 if (skp != NULL) 1605 *skp = sk; 1606 return (sk); 1607 err: 1608 if ((skp == NULL) || (*skp == NULL)) 1609 sk_SSL_CIPHER_free(sk); 1610 return (NULL); 1611} 1612 1613#ifndef OPENSSL_NO_TLSEXT 1614/** return a servername extension value if provided in Client Hello, or NULL. 1615 * So far, only host_name types are defined (RFC 3546). 1616 */ 1617 1618const char *SSL_get_servername(const SSL *s, const int type) 1619{ 1620 if (type != TLSEXT_NAMETYPE_host_name) 1621 return NULL; 1622 1623 return s->session && !s->tlsext_hostname ? 1624 s->session->tlsext_hostname : s->tlsext_hostname; 1625} 1626 1627int SSL_get_servername_type(const SSL *s) 1628{ 1629 if (s->session 1630 && (!s->tlsext_hostname ? s->session-> 1631 tlsext_hostname : s->tlsext_hostname)) 1632 return TLSEXT_NAMETYPE_host_name; 1633 return -1; 1634} 1635 1636/* 1637 * SSL_select_next_proto implements the standard protocol selection. It is 1638 * expected that this function is called from the callback set by 1639 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1640 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1641 * not included in the length. A byte string of length 0 is invalid. No byte 1642 * string may be truncated. The current, but experimental algorithm for 1643 * selecting the protocol is: 1) If the server doesn't support NPN then this 1644 * is indicated to the callback. In this case, the client application has to 1645 * abort the connection or have a default application level protocol. 2) If 1646 * the server supports NPN, but advertises an empty list then the client 1647 * selects the first protcol in its list, but indicates via the API that this 1648 * fallback case was enacted. 3) Otherwise, the client finds the first 1649 * protocol in the server's list that it supports and selects this protocol. 1650 * This is because it's assumed that the server has better information about 1651 * which protocol a client should use. 4) If the client doesn't support any 1652 * of the server's advertised protocols, then this is treated the same as 1653 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1654 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1655 */ 1656int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1657 const unsigned char *server, 1658 unsigned int server_len, 1659 const unsigned char *client, 1660 unsigned int client_len) 1661{ 1662 unsigned int i, j; 1663 const unsigned char *result; 1664 int status = OPENSSL_NPN_UNSUPPORTED; 1665 1666 /* 1667 * For each protocol in server preference order, see if we support it. 1668 */ 1669 for (i = 0; i < server_len;) { 1670 for (j = 0; j < client_len;) { 1671 if (server[i] == client[j] && 1672 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1673 /* We found a match */ 1674 result = &server[i]; 1675 status = OPENSSL_NPN_NEGOTIATED; 1676 goto found; 1677 } 1678 j += client[j]; 1679 j++; 1680 } 1681 i += server[i]; 1682 i++; 1683 } 1684 1685 /* There's no overlap between our protocols and the server's list. */ 1686 result = client; 1687 status = OPENSSL_NPN_NO_OVERLAP; 1688 1689 found: 1690 *out = (unsigned char *)result + 1; 1691 *outlen = result[0]; 1692 return status; 1693} 1694 1695# ifndef OPENSSL_NO_NEXTPROTONEG 1696/* 1697 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1698 * client's requested protocol for this connection and returns 0. If the 1699 * client didn't request any protocol, then *data is set to NULL. Note that 1700 * the client can request any protocol it chooses. The value returned from 1701 * this function need not be a member of the list of supported protocols 1702 * provided by the callback. 1703 */ 1704void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1705 unsigned *len) 1706{ 1707 *data = s->next_proto_negotiated; 1708 if (!*data) { 1709 *len = 0; 1710 } else { 1711 *len = s->next_proto_negotiated_len; 1712 } 1713} 1714 1715/* 1716 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1717 * a TLS server needs a list of supported protocols for Next Protocol 1718 * Negotiation. The returned list must be in wire format. The list is 1719 * returned by setting |out| to point to it and |outlen| to its length. This 1720 * memory will not be modified, but one should assume that the SSL* keeps a 1721 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1722 * wishes to advertise. Otherwise, no such extension will be included in the 1723 * ServerHello. 1724 */ 1725void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1726 int (*cb) (SSL *ssl, 1727 const unsigned char 1728 **out, 1729 unsigned int *outlen, 1730 void *arg), void *arg) 1731{ 1732 ctx->next_protos_advertised_cb = cb; 1733 ctx->next_protos_advertised_cb_arg = arg; 1734} 1735 1736/* 1737 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1738 * client needs to select a protocol from the server's provided list. |out| 1739 * must be set to point to the selected protocol (which may be within |in|). 1740 * The length of the protocol name must be written into |outlen|. The 1741 * server's advertised protocols are provided in |in| and |inlen|. The 1742 * callback can assume that |in| is syntactically valid. The client must 1743 * select a protocol. It is fatal to the connection if this callback returns 1744 * a value other than SSL_TLSEXT_ERR_OK. 1745 */ 1746void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1747 int (*cb) (SSL *s, unsigned char **out, 1748 unsigned char *outlen, 1749 const unsigned char *in, 1750 unsigned int inlen, 1751 void *arg), void *arg) 1752{ 1753 ctx->next_proto_select_cb = cb; 1754 ctx->next_proto_select_cb_arg = arg; 1755} 1756# endif 1757 1758/* 1759 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1760 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1761 * length-prefixed strings). Returns 0 on success. 1762 */ 1763int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1764 unsigned protos_len) 1765{ 1766 if (ctx->alpn_client_proto_list) 1767 OPENSSL_free(ctx->alpn_client_proto_list); 1768 1769 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1770 if (!ctx->alpn_client_proto_list) 1771 return 1; 1772 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1773 ctx->alpn_client_proto_list_len = protos_len; 1774 1775 return 0; 1776} 1777 1778/* 1779 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1780 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1781 * length-prefixed strings). Returns 0 on success. 1782 */ 1783int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1784 unsigned protos_len) 1785{ 1786 if (ssl->alpn_client_proto_list) 1787 OPENSSL_free(ssl->alpn_client_proto_list); 1788 1789 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1790 if (!ssl->alpn_client_proto_list) 1791 return 1; 1792 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1793 ssl->alpn_client_proto_list_len = protos_len; 1794 1795 return 0; 1796} 1797 1798/* 1799 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is 1800 * called during ClientHello processing in order to select an ALPN protocol 1801 * from the client's list of offered protocols. 1802 */ 1803void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, 1804 int (*cb) (SSL *ssl, 1805 const unsigned char **out, 1806 unsigned char *outlen, 1807 const unsigned char *in, 1808 unsigned int inlen, 1809 void *arg), void *arg) 1810{ 1811 ctx->alpn_select_cb = cb; 1812 ctx->alpn_select_cb_arg = arg; 1813} 1814 1815/* 1816 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from 1817 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name 1818 * (not including the leading length-prefix byte). If the server didn't 1819 * respond with a negotiated protocol then |*len| will be zero. 1820 */ 1821void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1822 unsigned *len) 1823{ 1824 *data = NULL; 1825 if (ssl->s3) 1826 *data = ssl->s3->alpn_selected; 1827 if (*data == NULL) 1828 *len = 0; 1829 else 1830 *len = ssl->s3->alpn_selected_len; 1831} 1832 1833#endif /* !OPENSSL_NO_TLSEXT */ 1834 1835int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1836 const char *label, size_t llen, 1837 const unsigned char *context, size_t contextlen, 1838 int use_context) 1839{ 1840 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER) 1841 return -1; 1842 1843 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1844 llen, context, 1845 contextlen, use_context); 1846} 1847 1848static unsigned long ssl_session_hash(const SSL_SESSION *a) 1849{ 1850 const unsigned char *session_id = a->session_id; 1851 unsigned long l; 1852 unsigned char tmp_storage[4]; 1853 1854 if (a->session_id_length < sizeof(tmp_storage)) { 1855 memset(tmp_storage, 0, sizeof(tmp_storage)); 1856 memcpy(tmp_storage, a->session_id, a->session_id_length); 1857 session_id = tmp_storage; 1858 } 1859 1860 l = (unsigned long) 1861 ((unsigned long)session_id[0]) | 1862 ((unsigned long)session_id[1] << 8L) | 1863 ((unsigned long)session_id[2] << 16L) | 1864 ((unsigned long)session_id[3] << 24L); 1865 return (l); 1866} 1867 1868/* 1869 * NB: If this function (or indeed the hash function which uses a sort of 1870 * coarser function than this one) is changed, ensure 1871 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1872 * being able to construct an SSL_SESSION that will collide with any existing 1873 * session with a matching session ID. 1874 */ 1875static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1876{ 1877 if (a->ssl_version != b->ssl_version) 1878 return (1); 1879 if (a->session_id_length != b->session_id_length) 1880 return (1); 1881 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1882} 1883 1884/* 1885 * These wrapper functions should remain rather than redeclaring 1886 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1887 * variable. The reason is that the functions aren't static, they're exposed 1888 * via ssl.h. 1889 */ 1890static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1891static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1892 1893SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1894{ 1895 SSL_CTX *ret = NULL; 1896 1897 if (meth == NULL) { 1898 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1899 return (NULL); 1900 } 1901#ifdef OPENSSL_FIPS 1902 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1903 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1904 return NULL; 1905 } 1906#endif 1907 1908 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1909 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1910 goto err; 1911 } 1912 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1913 if (ret == NULL) 1914 goto err; 1915 1916 memset(ret, 0, sizeof(SSL_CTX)); 1917 1918 ret->method = meth; 1919 1920 ret->cert_store = NULL; 1921 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1922 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1923 ret->session_cache_head = NULL; 1924 ret->session_cache_tail = NULL; 1925 1926 /* We take the system default */ 1927 ret->session_timeout = meth->get_timeout(); 1928 1929 ret->new_session_cb = 0; 1930 ret->remove_session_cb = 0; 1931 ret->get_session_cb = 0; 1932 ret->generate_session_id = 0; 1933 1934 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1935 1936 ret->references = 1; 1937 ret->quiet_shutdown = 0; 1938 1939/* ret->cipher=NULL;*/ 1940/*- 1941 ret->s2->challenge=NULL; 1942 ret->master_key=NULL; 1943 ret->key_arg=NULL; 1944 ret->s2->conn_id=NULL; */ 1945 1946 ret->info_callback = NULL; 1947 1948 ret->app_verify_callback = 0; 1949 ret->app_verify_arg = NULL; 1950 1951 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1952 ret->read_ahead = 0; 1953 ret->msg_callback = 0; 1954 ret->msg_callback_arg = NULL; 1955 ret->verify_mode = SSL_VERIFY_NONE; 1956#if 0 1957 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1958#endif 1959 ret->sid_ctx_length = 0; 1960 ret->default_verify_callback = NULL; 1961 if ((ret->cert = ssl_cert_new()) == NULL) 1962 goto err; 1963 1964 ret->default_passwd_callback = 0; 1965 ret->default_passwd_callback_userdata = NULL; 1966 ret->client_cert_cb = 0; 1967 ret->app_gen_cookie_cb = 0; 1968 ret->app_verify_cookie_cb = 0; 1969 1970 ret->sessions = lh_SSL_SESSION_new(); 1971 if (ret->sessions == NULL) 1972 goto err; 1973 ret->cert_store = X509_STORE_new(); 1974 if (ret->cert_store == NULL) 1975 goto err; 1976 1977 ssl_create_cipher_list(ret->method, 1978 &ret->cipher_list, &ret->cipher_list_by_id, 1979 meth->version == 1980 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, 1981 ret->cert); 1982 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1983 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1984 goto err2; 1985 } 1986 1987 ret->param = X509_VERIFY_PARAM_new(); 1988 if (!ret->param) 1989 goto err; 1990 1991 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1992 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1993 goto err2; 1994 } 1995 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1996 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1997 goto err2; 1998 } 1999 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 2000 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 2001 goto err2; 2002 } 2003 2004 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 2005 goto err; 2006 2007 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 2008 2009 ret->extra_certs = NULL; 2010 /* No compression for DTLS */ 2011 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) 2012 ret->comp_methods = SSL_COMP_get_compression_methods(); 2013 2014 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 2015 2016#ifndef OPENSSL_NO_TLSEXT 2017 ret->tlsext_servername_callback = 0; 2018 ret->tlsext_servername_arg = NULL; 2019 /* Setup RFC4507 ticket keys */ 2020 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0) 2021 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 2022 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 2023 ret->options |= SSL_OP_NO_TICKET; 2024 2025 ret->tlsext_status_cb = 0; 2026 ret->tlsext_status_arg = NULL; 2027 2028# ifndef OPENSSL_NO_NEXTPROTONEG 2029 ret->next_protos_advertised_cb = 0; 2030 ret->next_proto_select_cb = 0; 2031# endif 2032#endif 2033#ifndef OPENSSL_NO_PSK 2034 ret->psk_identity_hint = NULL; 2035 ret->psk_client_callback = NULL; 2036 ret->psk_server_callback = NULL; 2037#endif 2038#ifndef OPENSSL_NO_SRP 2039 SSL_CTX_SRP_CTX_init(ret); 2040#endif 2041#ifndef OPENSSL_NO_BUF_FREELISTS 2042 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 2043 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2044 if (!ret->rbuf_freelist) 2045 goto err; 2046 ret->rbuf_freelist->chunklen = 0; 2047 ret->rbuf_freelist->len = 0; 2048 ret->rbuf_freelist->head = NULL; 2049 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2050 if (!ret->wbuf_freelist) 2051 goto err; 2052 ret->wbuf_freelist->chunklen = 0; 2053 ret->wbuf_freelist->len = 0; 2054 ret->wbuf_freelist->head = NULL; 2055#endif 2056#ifndef OPENSSL_NO_ENGINE 2057 ret->client_cert_engine = NULL; 2058# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2059# define eng_strx(x) #x 2060# define eng_str(x) eng_strx(x) 2061 /* Use specific client engine automatically... ignore errors */ 2062 { 2063 ENGINE *eng; 2064 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2065 if (!eng) { 2066 ERR_clear_error(); 2067 ENGINE_load_builtin_engines(); 2068 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2069 } 2070 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2071 ERR_clear_error(); 2072 } 2073# endif 2074#endif 2075 /* 2076 * Default is to connect to non-RI servers. When RI is more widely 2077 * deployed might change this. 2078 */ 2079 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2080 2081 /* 2082 * Disable SSLv2 by default, callers that want to enable SSLv2 will have to 2083 * explicitly clear this option via either of SSL_CTX_clear_options() or 2084 * SSL_clear_options(). 2085 */ 2086 ret->options |= SSL_OP_NO_SSLv2; 2087 2088 return (ret); 2089 err: 2090 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 2091 err2: 2092 if (ret != NULL) 2093 SSL_CTX_free(ret); 2094 return (NULL); 2095} 2096 2097#if 0 2098static void SSL_COMP_free(SSL_COMP *comp) 2099{ 2100 OPENSSL_free(comp); 2101} 2102#endif 2103 2104#ifndef OPENSSL_NO_BUF_FREELISTS 2105static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2106{ 2107 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2108 for (ent = list->head; ent; ent = next) { 2109 next = ent->next; 2110 OPENSSL_free(ent); 2111 } 2112 OPENSSL_free(list); 2113} 2114#endif 2115 2116void SSL_CTX_free(SSL_CTX *a) 2117{ 2118 int i; 2119 2120 if (a == NULL) 2121 return; 2122 2123 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 2124#ifdef REF_PRINT 2125 REF_PRINT("SSL_CTX", a); 2126#endif 2127 if (i > 0) 2128 return; 2129#ifdef REF_CHECK 2130 if (i < 0) { 2131 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 2132 abort(); /* ok */ 2133 } 2134#endif 2135 2136 if (a->param) 2137 X509_VERIFY_PARAM_free(a->param); 2138 2139 /* 2140 * Free internal session cache. However: the remove_cb() may reference 2141 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2142 * after the sessions were flushed. 2143 * As the ex_data handling routines might also touch the session cache, 2144 * the most secure solution seems to be: empty (flush) the cache, then 2145 * free ex_data, then finally free the cache. 2146 * (See ticket [openssl.org #212].) 2147 */ 2148 if (a->sessions != NULL) 2149 SSL_CTX_flush_sessions(a, 0); 2150 2151 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2152 2153 if (a->sessions != NULL) 2154 lh_SSL_SESSION_free(a->sessions); 2155 2156 if (a->cert_store != NULL) 2157 X509_STORE_free(a->cert_store); 2158 if (a->cipher_list != NULL) 2159 sk_SSL_CIPHER_free(a->cipher_list); 2160 if (a->cipher_list_by_id != NULL) 2161 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2162 if (a->cert != NULL) 2163 ssl_cert_free(a->cert); 2164 if (a->client_CA != NULL) 2165 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 2166 if (a->extra_certs != NULL) 2167 sk_X509_pop_free(a->extra_certs, X509_free); 2168#if 0 /* This should never be done, since it 2169 * removes a global database */ 2170 if (a->comp_methods != NULL) 2171 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 2172#else 2173 a->comp_methods = NULL; 2174#endif 2175 2176#ifndef OPENSSL_NO_SRTP 2177 if (a->srtp_profiles) 2178 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2179#endif 2180 2181#ifndef OPENSSL_NO_PSK 2182 if (a->psk_identity_hint) 2183 OPENSSL_free(a->psk_identity_hint); 2184#endif 2185#ifndef OPENSSL_NO_SRP 2186 SSL_CTX_SRP_CTX_free(a); 2187#endif 2188#ifndef OPENSSL_NO_ENGINE 2189 if (a->client_cert_engine) 2190 ENGINE_finish(a->client_cert_engine); 2191#endif 2192 2193#ifndef OPENSSL_NO_BUF_FREELISTS 2194 if (a->wbuf_freelist) 2195 ssl_buf_freelist_free(a->wbuf_freelist); 2196 if (a->rbuf_freelist) 2197 ssl_buf_freelist_free(a->rbuf_freelist); 2198#endif 2199#ifndef OPENSSL_NO_TLSEXT 2200# ifndef OPENSSL_NO_EC 2201 if (a->tlsext_ecpointformatlist) 2202 OPENSSL_free(a->tlsext_ecpointformatlist); 2203 if (a->tlsext_ellipticcurvelist) 2204 OPENSSL_free(a->tlsext_ellipticcurvelist); 2205# endif /* OPENSSL_NO_EC */ 2206 if (a->alpn_client_proto_list != NULL) 2207 OPENSSL_free(a->alpn_client_proto_list); 2208#endif 2209 2210 OPENSSL_free(a); 2211} 2212 2213void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2214{ 2215 ctx->default_passwd_callback = cb; 2216} 2217 2218void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2219{ 2220 ctx->default_passwd_callback_userdata = u; 2221} 2222 2223void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2224 int (*cb) (X509_STORE_CTX *, void *), 2225 void *arg) 2226{ 2227 ctx->app_verify_callback = cb; 2228 ctx->app_verify_arg = arg; 2229} 2230 2231void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2232 int (*cb) (int, X509_STORE_CTX *)) 2233{ 2234 ctx->verify_mode = mode; 2235 ctx->default_verify_callback = cb; 2236} 2237 2238void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2239{ 2240 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2241} 2242 2243void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), 2244 void *arg) 2245{ 2246 ssl_cert_set_cert_cb(c->cert, cb, arg); 2247} 2248 2249void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) 2250{ 2251 ssl_cert_set_cert_cb(s->cert, cb, arg); 2252} 2253 2254void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2255{ 2256 CERT_PKEY *cpk; 2257 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2258 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2259 int rsa_tmp_export, dh_tmp_export, kl; 2260 unsigned long mask_k, mask_a, emask_k, emask_a; 2261#ifndef OPENSSL_NO_ECDSA 2262 int have_ecc_cert, ecdsa_ok; 2263#endif 2264#ifndef OPENSSL_NO_ECDH 2265 int have_ecdh_tmp, ecdh_ok, ecc_pkey_size; 2266#endif 2267#ifndef OPENSSL_NO_EC 2268 X509 *x = NULL; 2269 EVP_PKEY *ecc_pkey = NULL; 2270 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2271#endif 2272 if (c == NULL) 2273 return; 2274 2275 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2276 2277#ifndef OPENSSL_NO_RSA 2278 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2279 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2280 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2281#else 2282 rsa_tmp = rsa_tmp_export = 0; 2283#endif 2284#ifndef OPENSSL_NO_DH 2285 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2286 dh_tmp_export = (c->dh_tmp_cb != NULL || 2287 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2288#else 2289 dh_tmp = dh_tmp_export = 0; 2290#endif 2291 2292#ifndef OPENSSL_NO_ECDH 2293 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto); 2294#endif 2295 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2296 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID; 2297 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2298 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2299 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2300 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2301 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2302 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2303 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID; 2304 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2305 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2306/* FIX THIS EAY EAY EAY */ 2307 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID; 2308 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2309 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2310#ifndef OPENSSL_NO_EC 2311 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID; 2312#endif 2313 mask_k = 0; 2314 mask_a = 0; 2315 emask_k = 0; 2316 emask_a = 0; 2317 2318#ifdef CIPHER_DEBUG 2319 fprintf(stderr, 2320 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2321 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2322 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2323#endif 2324 2325 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2326 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2327 mask_k |= SSL_kGOST; 2328 mask_a |= SSL_aGOST01; 2329 } 2330 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2331 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2332 mask_k |= SSL_kGOST; 2333 mask_a |= SSL_aGOST94; 2334 } 2335 2336 if (rsa_enc || (rsa_tmp && rsa_sign)) 2337 mask_k |= SSL_kRSA; 2338 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2339 emask_k |= SSL_kRSA; 2340 2341#if 0 2342 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2343 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2344 mask_k |= SSL_kEDH; 2345 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2346 (rsa_enc || rsa_sign || dsa_sign)) 2347 emask_k |= SSL_kEDH; 2348#endif 2349 2350 if (dh_tmp_export) 2351 emask_k |= SSL_kEDH; 2352 2353 if (dh_tmp) 2354 mask_k |= SSL_kEDH; 2355 2356 if (dh_rsa) 2357 mask_k |= SSL_kDHr; 2358 if (dh_rsa_export) 2359 emask_k |= SSL_kDHr; 2360 2361 if (dh_dsa) 2362 mask_k |= SSL_kDHd; 2363 if (dh_dsa_export) 2364 emask_k |= SSL_kDHd; 2365 2366 if (mask_k & (SSL_kDHr | SSL_kDHd)) 2367 mask_a |= SSL_aDH; 2368 2369 if (rsa_enc || rsa_sign) { 2370 mask_a |= SSL_aRSA; 2371 emask_a |= SSL_aRSA; 2372 } 2373 2374 if (dsa_sign) { 2375 mask_a |= SSL_aDSS; 2376 emask_a |= SSL_aDSS; 2377 } 2378 2379 mask_a |= SSL_aNULL; 2380 emask_a |= SSL_aNULL; 2381 2382#ifndef OPENSSL_NO_KRB5 2383 mask_k |= SSL_kKRB5; 2384 mask_a |= SSL_aKRB5; 2385 emask_k |= SSL_kKRB5; 2386 emask_a |= SSL_aKRB5; 2387#endif 2388 2389 /* 2390 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2391 * depending on the key usage extension. 2392 */ 2393#ifndef OPENSSL_NO_EC 2394 if (have_ecc_cert) { 2395 cpk = &c->pkeys[SSL_PKEY_ECC]; 2396 x = cpk->x509; 2397 /* This call populates extension flags (ex_flags) */ 2398 X509_check_purpose(x, -1, 0); 2399# ifndef OPENSSL_NO_ECDH 2400 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2401 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2402# endif 2403 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2404 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2405 if (!(cpk->valid_flags & CERT_PKEY_SIGN)) 2406 ecdsa_ok = 0; 2407 ecc_pkey = X509_get_pubkey(x); 2408# ifndef OPENSSL_NO_ECDH 2409 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2410# endif 2411 EVP_PKEY_free(ecc_pkey); 2412 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2413 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2414 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2415 } 2416# ifndef OPENSSL_NO_ECDH 2417 if (ecdh_ok) { 2418 2419 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2420 mask_k |= SSL_kECDHr; 2421 mask_a |= SSL_aECDH; 2422 if (ecc_pkey_size <= 163) { 2423 emask_k |= SSL_kECDHr; 2424 emask_a |= SSL_aECDH; 2425 } 2426 } 2427 2428 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2429 mask_k |= SSL_kECDHe; 2430 mask_a |= SSL_aECDH; 2431 if (ecc_pkey_size <= 163) { 2432 emask_k |= SSL_kECDHe; 2433 emask_a |= SSL_aECDH; 2434 } 2435 } 2436 } 2437# endif 2438# ifndef OPENSSL_NO_ECDSA 2439 if (ecdsa_ok) { 2440 mask_a |= SSL_aECDSA; 2441 emask_a |= SSL_aECDSA; 2442 } 2443# endif 2444 } 2445#endif 2446 2447#ifndef OPENSSL_NO_ECDH 2448 if (have_ecdh_tmp) { 2449 mask_k |= SSL_kEECDH; 2450 emask_k |= SSL_kEECDH; 2451 } 2452#endif 2453 2454#ifndef OPENSSL_NO_PSK 2455 mask_k |= SSL_kPSK; 2456 mask_a |= SSL_aPSK; 2457 emask_k |= SSL_kPSK; 2458 emask_a |= SSL_aPSK; 2459#endif 2460 2461 c->mask_k = mask_k; 2462 c->mask_a = mask_a; 2463 c->export_mask_k = emask_k; 2464 c->export_mask_a = emask_a; 2465 c->valid = 1; 2466} 2467 2468/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2469#define ku_reject(x, usage) \ 2470 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2471 2472#ifndef OPENSSL_NO_ECDH 2473 2474int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2475{ 2476 unsigned long alg_k, alg_a; 2477 EVP_PKEY *pkey = NULL; 2478 int keysize = 0; 2479 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2480 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2481 2482 alg_k = cs->algorithm_mkey; 2483 alg_a = cs->algorithm_auth; 2484 2485 if (SSL_C_IS_EXPORT(cs)) { 2486 /* ECDH key length in export ciphers must be <= 163 bits */ 2487 pkey = X509_get_pubkey(x); 2488 if (pkey == NULL) 2489 return 0; 2490 keysize = EVP_PKEY_bits(pkey); 2491 EVP_PKEY_free(pkey); 2492 if (keysize > 163) 2493 return 0; 2494 } 2495 2496 /* This call populates the ex_flags field correctly */ 2497 X509_check_purpose(x, -1, 0); 2498 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2499 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2500 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2501 } 2502 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2503 /* key usage, if present, must allow key agreement */ 2504 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2505 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2506 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2507 return 0; 2508 } 2509 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2510 /* signature alg must be ECDSA */ 2511 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2512 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2513 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2514 return 0; 2515 } 2516 } 2517 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2518 /* signature alg must be RSA */ 2519 2520 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2521 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2522 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2523 return 0; 2524 } 2525 } 2526 } 2527 if (alg_a & SSL_aECDSA) { 2528 /* key usage, if present, must allow signing */ 2529 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2530 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2531 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2532 return 0; 2533 } 2534 } 2535 2536 return 1; /* all checks are ok */ 2537} 2538 2539#endif 2540 2541static int ssl_get_server_cert_index(const SSL *s) 2542{ 2543 int idx; 2544 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); 2545 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) 2546 idx = SSL_PKEY_RSA_SIGN; 2547 if (idx == -1) 2548 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); 2549 return idx; 2550} 2551 2552CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2553{ 2554 CERT *c; 2555 int i; 2556 2557 c = s->cert; 2558 if (!s->s3 || !s->s3->tmp.new_cipher) 2559 return NULL; 2560 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2561 2562#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2563 /* 2564 * Broken protocol test: return last used certificate: which may mismatch 2565 * the one expected. 2566 */ 2567 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2568 return c->key; 2569#endif 2570 2571 i = ssl_get_server_cert_index(s); 2572 2573 /* This may or may not be an error. */ 2574 if (i < 0) 2575 return NULL; 2576 2577 /* May be NULL. */ 2578 return &c->pkeys[i]; 2579} 2580 2581EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2582 const EVP_MD **pmd) 2583{ 2584 unsigned long alg_a; 2585 CERT *c; 2586 int idx = -1; 2587 2588 alg_a = cipher->algorithm_auth; 2589 c = s->cert; 2590 2591#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2592 /* 2593 * Broken protocol test: use last key: which may mismatch the one 2594 * expected. 2595 */ 2596 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2597 idx = c->key - c->pkeys; 2598 else 2599#endif 2600 2601 if ((alg_a & SSL_aDSS) && 2602 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2603 idx = SSL_PKEY_DSA_SIGN; 2604 else if (alg_a & SSL_aRSA) { 2605 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2606 idx = SSL_PKEY_RSA_SIGN; 2607 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2608 idx = SSL_PKEY_RSA_ENC; 2609 } else if ((alg_a & SSL_aECDSA) && 2610 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2611 idx = SSL_PKEY_ECC; 2612 if (idx == -1) { 2613 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2614 return (NULL); 2615 } 2616 if (pmd) 2617 *pmd = c->pkeys[idx].digest; 2618 return c->pkeys[idx].privatekey; 2619} 2620 2621#ifndef OPENSSL_NO_TLSEXT 2622int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, 2623 size_t *serverinfo_length) 2624{ 2625 CERT *c = NULL; 2626 int i = 0; 2627 *serverinfo_length = 0; 2628 2629 c = s->cert; 2630 i = ssl_get_server_cert_index(s); 2631 2632 if (i == -1) 2633 return 0; 2634 if (c->pkeys[i].serverinfo == NULL) 2635 return 0; 2636 2637 *serverinfo = c->pkeys[i].serverinfo; 2638 *serverinfo_length = c->pkeys[i].serverinfo_length; 2639 return 1; 2640} 2641#endif 2642 2643void ssl_update_cache(SSL *s, int mode) 2644{ 2645 int i; 2646 2647 /* 2648 * If the session_id_length is 0, we are not supposed to cache it, and it 2649 * would be rather hard to do anyway :-) 2650 */ 2651 if (s->session->session_id_length == 0) 2652 return; 2653 2654 i = s->session_ctx->session_cache_mode; 2655 if ((i & mode) && (!s->hit) 2656 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2657 || SSL_CTX_add_session(s->session_ctx, s->session)) 2658 && (s->session_ctx->new_session_cb != NULL)) { 2659 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2660 if (!s->session_ctx->new_session_cb(s, s->session)) 2661 SSL_SESSION_free(s->session); 2662 } 2663 2664 /* auto flush every 255 connections */ 2665 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2666 if ((((mode & SSL_SESS_CACHE_CLIENT) 2667 ? s->session_ctx->stats.sess_connect_good 2668 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2669 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2670 } 2671 } 2672} 2673 2674const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) 2675{ 2676 return ctx->method; 2677} 2678 2679const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2680{ 2681 return (s->method); 2682} 2683 2684int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2685{ 2686 int conn = -1; 2687 int ret = 1; 2688 2689 if (s->method != meth) { 2690 if (s->handshake_func != NULL) 2691 conn = (s->handshake_func == s->method->ssl_connect); 2692 2693 if (s->method->version == meth->version) 2694 s->method = meth; 2695 else { 2696 s->method->ssl_free(s); 2697 s->method = meth; 2698 ret = s->method->ssl_new(s); 2699 } 2700 2701 if (conn == 1) 2702 s->handshake_func = meth->ssl_connect; 2703 else if (conn == 0) 2704 s->handshake_func = meth->ssl_accept; 2705 } 2706 return (ret); 2707} 2708 2709int SSL_get_error(const SSL *s, int i) 2710{ 2711 int reason; 2712 unsigned long l; 2713 BIO *bio; 2714 2715 if (i > 0) 2716 return (SSL_ERROR_NONE); 2717 2718 /* 2719 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2720 * where we do encode the error 2721 */ 2722 if ((l = ERR_peek_error()) != 0) { 2723 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2724 return (SSL_ERROR_SYSCALL); 2725 else 2726 return (SSL_ERROR_SSL); 2727 } 2728 2729 if ((i < 0) && SSL_want_read(s)) { 2730 bio = SSL_get_rbio(s); 2731 if (BIO_should_read(bio)) 2732 return (SSL_ERROR_WANT_READ); 2733 else if (BIO_should_write(bio)) 2734 /* 2735 * This one doesn't make too much sense ... We never try to write 2736 * to the rbio, and an application program where rbio and wbio 2737 * are separate couldn't even know what it should wait for. 2738 * However if we ever set s->rwstate incorrectly (so that we have 2739 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2740 * wbio *are* the same, this test works around that bug; so it 2741 * might be safer to keep it. 2742 */ 2743 return (SSL_ERROR_WANT_WRITE); 2744 else if (BIO_should_io_special(bio)) { 2745 reason = BIO_get_retry_reason(bio); 2746 if (reason == BIO_RR_CONNECT) 2747 return (SSL_ERROR_WANT_CONNECT); 2748 else if (reason == BIO_RR_ACCEPT) 2749 return (SSL_ERROR_WANT_ACCEPT); 2750 else 2751 return (SSL_ERROR_SYSCALL); /* unknown */ 2752 } 2753 } 2754 2755 if ((i < 0) && SSL_want_write(s)) { 2756 bio = SSL_get_wbio(s); 2757 if (BIO_should_write(bio)) 2758 return (SSL_ERROR_WANT_WRITE); 2759 else if (BIO_should_read(bio)) 2760 /* 2761 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2762 */ 2763 return (SSL_ERROR_WANT_READ); 2764 else if (BIO_should_io_special(bio)) { 2765 reason = BIO_get_retry_reason(bio); 2766 if (reason == BIO_RR_CONNECT) 2767 return (SSL_ERROR_WANT_CONNECT); 2768 else if (reason == BIO_RR_ACCEPT) 2769 return (SSL_ERROR_WANT_ACCEPT); 2770 else 2771 return (SSL_ERROR_SYSCALL); 2772 } 2773 } 2774 if ((i < 0) && SSL_want_x509_lookup(s)) { 2775 return (SSL_ERROR_WANT_X509_LOOKUP); 2776 } 2777 2778 if (i == 0) { 2779 if (s->version == SSL2_VERSION) { 2780 /* assume it is the socket being closed */ 2781 return (SSL_ERROR_ZERO_RETURN); 2782 } else { 2783 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2784 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2785 return (SSL_ERROR_ZERO_RETURN); 2786 } 2787 } 2788 return (SSL_ERROR_SYSCALL); 2789} 2790 2791int SSL_do_handshake(SSL *s) 2792{ 2793 int ret = 1; 2794 2795 if (s->handshake_func == NULL) { 2796 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2797 return (-1); 2798 } 2799 2800 s->method->ssl_renegotiate_check(s); 2801 2802 if (SSL_in_init(s) || SSL_in_before(s)) { 2803 ret = s->handshake_func(s); 2804 } 2805 return (ret); 2806} 2807 2808/* 2809 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2810 * calls will reset it 2811 */ 2812void SSL_set_accept_state(SSL *s) 2813{ 2814 s->server = 1; 2815 s->shutdown = 0; 2816 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2817 s->handshake_func = s->method->ssl_accept; 2818 /* clear the current cipher */ 2819 ssl_clear_cipher_ctx(s); 2820 ssl_clear_hash_ctx(&s->read_hash); 2821 ssl_clear_hash_ctx(&s->write_hash); 2822} 2823 2824void SSL_set_connect_state(SSL *s) 2825{ 2826 s->server = 0; 2827 s->shutdown = 0; 2828 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2829 s->handshake_func = s->method->ssl_connect; 2830 /* clear the current cipher */ 2831 ssl_clear_cipher_ctx(s); 2832 ssl_clear_hash_ctx(&s->read_hash); 2833 ssl_clear_hash_ctx(&s->write_hash); 2834} 2835 2836int ssl_undefined_function(SSL *s) 2837{ 2838 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2839 return (0); 2840} 2841 2842int ssl_undefined_void_function(void) 2843{ 2844 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2845 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2846 return (0); 2847} 2848 2849int ssl_undefined_const_function(const SSL *s) 2850{ 2851 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2852 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2853 return (0); 2854} 2855 2856SSL_METHOD *ssl_bad_method(int ver) 2857{ 2858 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2859 return (NULL); 2860} 2861 2862const char *SSL_get_version(const SSL *s) 2863{ 2864 if (s->version == TLS1_2_VERSION) 2865 return ("TLSv1.2"); 2866 else if (s->version == TLS1_1_VERSION) 2867 return ("TLSv1.1"); 2868 else if (s->version == TLS1_VERSION) 2869 return ("TLSv1"); 2870 else if (s->version == SSL3_VERSION) 2871 return ("SSLv3"); 2872 else if (s->version == SSL2_VERSION) 2873 return ("SSLv2"); 2874 else if (s->version == DTLS1_BAD_VER) 2875 return ("DTLSv0.9"); 2876 else if (s->version == DTLS1_VERSION) 2877 return ("DTLSv1"); 2878 else if (s->version == DTLS1_2_VERSION) 2879 return ("DTLSv1.2"); 2880 else 2881 return ("unknown"); 2882} 2883 2884SSL *SSL_dup(SSL *s) 2885{ 2886 STACK_OF(X509_NAME) *sk; 2887 X509_NAME *xn; 2888 SSL *ret; 2889 int i; 2890 2891 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2892 return (NULL); 2893 2894 ret->version = s->version; 2895 ret->type = s->type; 2896 ret->method = s->method; 2897 2898 if (s->session != NULL) { 2899 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2900 SSL_copy_session_id(ret, s); 2901 } else { 2902 /* 2903 * No session has been established yet, so we have to expect that 2904 * s->cert or ret->cert will be changed later -- they should not both 2905 * point to the same object, and thus we can't use 2906 * SSL_copy_session_id. 2907 */ 2908 2909 ret->method->ssl_free(ret); 2910 ret->method = s->method; 2911 ret->method->ssl_new(ret); 2912 2913 if (s->cert != NULL) { 2914 if (ret->cert != NULL) { 2915 ssl_cert_free(ret->cert); 2916 } 2917 ret->cert = ssl_cert_dup(s->cert); 2918 if (ret->cert == NULL) 2919 goto err; 2920 } 2921 2922 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2923 } 2924 2925 ret->options = s->options; 2926 ret->mode = s->mode; 2927 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2928 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2929 ret->msg_callback = s->msg_callback; 2930 ret->msg_callback_arg = s->msg_callback_arg; 2931 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2932 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2933 ret->generate_session_id = s->generate_session_id; 2934 2935 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2936 2937 ret->debug = s->debug; 2938 2939 /* copy app data, a little dangerous perhaps */ 2940 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2941 goto err; 2942 2943 /* setup rbio, and wbio */ 2944 if (s->rbio != NULL) { 2945 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2946 goto err; 2947 } 2948 if (s->wbio != NULL) { 2949 if (s->wbio != s->rbio) { 2950 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2951 goto err; 2952 } else 2953 ret->wbio = ret->rbio; 2954 } 2955 ret->rwstate = s->rwstate; 2956 ret->in_handshake = s->in_handshake; 2957 ret->handshake_func = s->handshake_func; 2958 ret->server = s->server; 2959 ret->renegotiate = s->renegotiate; 2960 ret->new_session = s->new_session; 2961 ret->quiet_shutdown = s->quiet_shutdown; 2962 ret->shutdown = s->shutdown; 2963 ret->state = s->state; /* SSL_dup does not really work at any state, 2964 * though */ 2965 ret->rstate = s->rstate; 2966 ret->init_num = 0; /* would have to copy ret->init_buf, 2967 * ret->init_msg, ret->init_num, 2968 * ret->init_off */ 2969 ret->hit = s->hit; 2970 2971 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2972 2973 /* dup the cipher_list and cipher_list_by_id stacks */ 2974 if (s->cipher_list != NULL) { 2975 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2976 goto err; 2977 } 2978 if (s->cipher_list_by_id != NULL) 2979 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2980 == NULL) 2981 goto err; 2982 2983 /* Dup the client_CA list */ 2984 if (s->client_CA != NULL) { 2985 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2986 goto err; 2987 ret->client_CA = sk; 2988 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2989 xn = sk_X509_NAME_value(sk, i); 2990 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2991 X509_NAME_free(xn); 2992 goto err; 2993 } 2994 } 2995 } 2996 2997 if (0) { 2998 err: 2999 if (ret != NULL) 3000 SSL_free(ret); 3001 ret = NULL; 3002 } 3003 return (ret); 3004} 3005 3006void ssl_clear_cipher_ctx(SSL *s) 3007{ 3008 if (s->enc_read_ctx != NULL) { 3009 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 3010 OPENSSL_free(s->enc_read_ctx); 3011 s->enc_read_ctx = NULL; 3012 } 3013 if (s->enc_write_ctx != NULL) { 3014 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 3015 OPENSSL_free(s->enc_write_ctx); 3016 s->enc_write_ctx = NULL; 3017 } 3018#ifndef OPENSSL_NO_COMP 3019 if (s->expand != NULL) { 3020 COMP_CTX_free(s->expand); 3021 s->expand = NULL; 3022 } 3023 if (s->compress != NULL) { 3024 COMP_CTX_free(s->compress); 3025 s->compress = NULL; 3026 } 3027#endif 3028} 3029 3030X509 *SSL_get_certificate(const SSL *s) 3031{ 3032 if (s->cert != NULL) 3033 return (s->cert->key->x509); 3034 else 3035 return (NULL); 3036} 3037 3038EVP_PKEY *SSL_get_privatekey(const SSL *s) 3039{ 3040 if (s->cert != NULL) 3041 return (s->cert->key->privatekey); 3042 else 3043 return (NULL); 3044} 3045 3046X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3047{ 3048 if (ctx->cert != NULL) 3049 return ctx->cert->key->x509; 3050 else 3051 return NULL; 3052} 3053 3054EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3055{ 3056 if (ctx->cert != NULL) 3057 return ctx->cert->key->privatekey; 3058 else 3059 return NULL; 3060} 3061 3062const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3063{ 3064 if ((s->session != NULL) && (s->session->cipher != NULL)) 3065 return (s->session->cipher); 3066 return (NULL); 3067} 3068 3069#ifdef OPENSSL_NO_COMP 3070const COMP_METHOD *SSL_get_current_compression(SSL *s) 3071{ 3072 return NULL; 3073} 3074 3075const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3076{ 3077 return NULL; 3078} 3079#else 3080 3081const COMP_METHOD *SSL_get_current_compression(SSL *s) 3082{ 3083 if (s->compress != NULL) 3084 return (s->compress->meth); 3085 return (NULL); 3086} 3087 3088const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3089{ 3090 if (s->expand != NULL) 3091 return (s->expand->meth); 3092 return (NULL); 3093} 3094#endif 3095 3096int ssl_init_wbio_buffer(SSL *s, int push) 3097{ 3098 BIO *bbio; 3099 3100 if (s->bbio == NULL) { 3101 bbio = BIO_new(BIO_f_buffer()); 3102 if (bbio == NULL) 3103 return (0); 3104 s->bbio = bbio; 3105 } else { 3106 bbio = s->bbio; 3107 if (s->bbio == s->wbio) 3108 s->wbio = BIO_pop(s->wbio); 3109 } 3110 (void)BIO_reset(bbio); 3111/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3112 if (!BIO_set_read_buffer_size(bbio, 1)) { 3113 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 3114 return (0); 3115 } 3116 if (push) { 3117 if (s->wbio != bbio) 3118 s->wbio = BIO_push(bbio, s->wbio); 3119 } else { 3120 if (s->wbio == bbio) 3121 s->wbio = BIO_pop(bbio); 3122 } 3123 return (1); 3124} 3125 3126void ssl_free_wbio_buffer(SSL *s) 3127{ 3128 if (s->bbio == NULL) 3129 return; 3130 3131 if (s->bbio == s->wbio) { 3132 /* remove buffering */ 3133 s->wbio = BIO_pop(s->wbio); 3134#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 3135 * adding one more preprocessor symbol */ 3136 assert(s->wbio != NULL); 3137#endif 3138 } 3139 BIO_free(s->bbio); 3140 s->bbio = NULL; 3141} 3142 3143void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3144{ 3145 ctx->quiet_shutdown = mode; 3146} 3147 3148int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3149{ 3150 return (ctx->quiet_shutdown); 3151} 3152 3153void SSL_set_quiet_shutdown(SSL *s, int mode) 3154{ 3155 s->quiet_shutdown = mode; 3156} 3157 3158int SSL_get_quiet_shutdown(const SSL *s) 3159{ 3160 return (s->quiet_shutdown); 3161} 3162 3163void SSL_set_shutdown(SSL *s, int mode) 3164{ 3165 s->shutdown = mode; 3166} 3167 3168int SSL_get_shutdown(const SSL *s) 3169{ 3170 return (s->shutdown); 3171} 3172 3173int SSL_version(const SSL *s) 3174{ 3175 return (s->version); 3176} 3177 3178SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3179{ 3180 return (ssl->ctx); 3181} 3182 3183SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 3184{ 3185 CERT *ocert = ssl->cert; 3186 if (ssl->ctx == ctx) 3187 return ssl->ctx; 3188#ifndef OPENSSL_NO_TLSEXT 3189 if (ctx == NULL) 3190 ctx = ssl->initial_ctx; 3191#endif 3192 ssl->cert = ssl_cert_dup(ctx->cert); 3193 if (ocert) { 3194 int i; 3195 /* Preserve any already negotiated parameters */ 3196 if (ssl->server) { 3197 ssl->cert->peer_sigalgs = ocert->peer_sigalgs; 3198 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen; 3199 ocert->peer_sigalgs = NULL; 3200 ssl->cert->ciphers_raw = ocert->ciphers_raw; 3201 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen; 3202 ocert->ciphers_raw = NULL; 3203 } 3204 for (i = 0; i < SSL_PKEY_NUM; i++) { 3205 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 3206 } 3207#ifndef OPENSSL_NO_TLSEXT 3208 ssl->cert->alpn_proposed = ocert->alpn_proposed; 3209 ssl->cert->alpn_proposed_len = ocert->alpn_proposed_len; 3210 ocert->alpn_proposed = NULL; 3211 ssl->cert->alpn_sent = ocert->alpn_sent; 3212 3213 if (!custom_exts_copy_flags(&ssl->cert->srv_ext, &ocert->srv_ext)) 3214 return NULL; 3215#endif 3216 ssl_cert_free(ocert); 3217 } 3218 3219 /* 3220 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 3221 * so setter APIs must prevent invalid lengths from entering the system. 3222 */ 3223 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 3224 3225 /* 3226 * If the session ID context matches that of the parent SSL_CTX, 3227 * inherit it from the new SSL_CTX as well. If however the context does 3228 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 3229 * leave it unchanged. 3230 */ 3231 if ((ssl->ctx != NULL) && 3232 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 3233 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 3234 ssl->sid_ctx_length = ctx->sid_ctx_length; 3235 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3236 } 3237 3238 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 3239 if (ssl->ctx != NULL) 3240 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3241 ssl->ctx = ctx; 3242 3243 return (ssl->ctx); 3244} 3245 3246#ifndef OPENSSL_NO_STDIO 3247int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3248{ 3249 return (X509_STORE_set_default_paths(ctx->cert_store)); 3250} 3251 3252int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3253 const char *CApath) 3254{ 3255 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3256} 3257#endif 3258 3259void SSL_set_info_callback(SSL *ssl, 3260 void (*cb) (const SSL *ssl, int type, int val)) 3261{ 3262 ssl->info_callback = cb; 3263} 3264 3265/* 3266 * One compiler (Diab DCC) doesn't like argument names in returned function 3267 * pointer. 3268 */ 3269void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 3270 int /* type */ , 3271 int /* val */ ) { 3272 return ssl->info_callback; 3273} 3274 3275int SSL_state(const SSL *ssl) 3276{ 3277 return (ssl->state); 3278} 3279 3280void SSL_set_state(SSL *ssl, int state) 3281{ 3282 ssl->state = state; 3283} 3284 3285void SSL_set_verify_result(SSL *ssl, long arg) 3286{ 3287 ssl->verify_result = arg; 3288} 3289 3290long SSL_get_verify_result(const SSL *ssl) 3291{ 3292 return (ssl->verify_result); 3293} 3294 3295int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3296 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3297{ 3298 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3299 new_func, dup_func, free_func); 3300} 3301 3302int SSL_set_ex_data(SSL *s, int idx, void *arg) 3303{ 3304 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3305} 3306 3307void *SSL_get_ex_data(const SSL *s, int idx) 3308{ 3309 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3310} 3311 3312int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3313 CRYPTO_EX_dup *dup_func, 3314 CRYPTO_EX_free *free_func) 3315{ 3316 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3317 new_func, dup_func, free_func); 3318} 3319 3320int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3321{ 3322 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3323} 3324 3325void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3326{ 3327 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3328} 3329 3330int ssl_ok(SSL *s) 3331{ 3332 return (1); 3333} 3334 3335X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3336{ 3337 return (ctx->cert_store); 3338} 3339 3340void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3341{ 3342 if (ctx->cert_store != NULL) 3343 X509_STORE_free(ctx->cert_store); 3344 ctx->cert_store = store; 3345} 3346 3347int SSL_want(const SSL *s) 3348{ 3349 return (s->rwstate); 3350} 3351 3352/** 3353 * \brief Set the callback for generating temporary RSA keys. 3354 * \param ctx the SSL context. 3355 * \param cb the callback 3356 */ 3357 3358#ifndef OPENSSL_NO_RSA 3359void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3360 int is_export, 3361 int keylength)) 3362{ 3363 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3364} 3365 3366void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3367 int is_export, 3368 int keylength)) 3369{ 3370 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3371} 3372#endif 3373 3374#ifdef DOXYGEN 3375/** 3376 * \brief The RSA temporary key callback function. 3377 * \param ssl the SSL session. 3378 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3379 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3380 * of the required key in bits. 3381 * \return the temporary RSA key. 3382 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3383 */ 3384 3385RSA *cb(SSL *ssl, int is_export, int keylength) 3386{ 3387} 3388#endif 3389 3390/** 3391 * \brief Set the callback for generating temporary DH keys. 3392 * \param ctx the SSL context. 3393 * \param dh the callback 3394 */ 3395 3396#ifndef OPENSSL_NO_DH 3397void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3398 DH *(*dh) (SSL *ssl, int is_export, 3399 int keylength)) 3400{ 3401 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3402} 3403 3404void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3405 int keylength)) 3406{ 3407 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3408} 3409#endif 3410 3411#ifndef OPENSSL_NO_ECDH 3412void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3413 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3414 int keylength)) 3415{ 3416 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3417 (void (*)(void))ecdh); 3418} 3419 3420void SSL_set_tmp_ecdh_callback(SSL *ssl, 3421 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3422 int keylength)) 3423{ 3424 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3425} 3426#endif 3427 3428#ifndef OPENSSL_NO_PSK 3429int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3430{ 3431 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3432 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3433 SSL_R_DATA_LENGTH_TOO_LONG); 3434 return 0; 3435 } 3436 if (ctx->psk_identity_hint != NULL) 3437 OPENSSL_free(ctx->psk_identity_hint); 3438 if (identity_hint != NULL) { 3439 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3440 if (ctx->psk_identity_hint == NULL) 3441 return 0; 3442 } else 3443 ctx->psk_identity_hint = NULL; 3444 return 1; 3445} 3446 3447int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3448{ 3449 if (s == NULL) 3450 return 0; 3451 3452 if (s->session == NULL) 3453 return 1; /* session not created yet, ignored */ 3454 3455 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3456 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3457 return 0; 3458 } 3459 if (s->session->psk_identity_hint != NULL) 3460 OPENSSL_free(s->session->psk_identity_hint); 3461 if (identity_hint != NULL) { 3462 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3463 if (s->session->psk_identity_hint == NULL) 3464 return 0; 3465 } else 3466 s->session->psk_identity_hint = NULL; 3467 return 1; 3468} 3469 3470const char *SSL_get_psk_identity_hint(const SSL *s) 3471{ 3472 if (s == NULL || s->session == NULL) 3473 return NULL; 3474 return (s->session->psk_identity_hint); 3475} 3476 3477const char *SSL_get_psk_identity(const SSL *s) 3478{ 3479 if (s == NULL || s->session == NULL) 3480 return NULL; 3481 return (s->session->psk_identity); 3482} 3483 3484void SSL_set_psk_client_callback(SSL *s, 3485 unsigned int (*cb) (SSL *ssl, 3486 const char *hint, 3487 char *identity, 3488 unsigned int 3489 max_identity_len, 3490 unsigned char *psk, 3491 unsigned int 3492 max_psk_len)) 3493{ 3494 s->psk_client_callback = cb; 3495} 3496 3497void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3498 unsigned int (*cb) (SSL *ssl, 3499 const char *hint, 3500 char *identity, 3501 unsigned int 3502 max_identity_len, 3503 unsigned char *psk, 3504 unsigned int 3505 max_psk_len)) 3506{ 3507 ctx->psk_client_callback = cb; 3508} 3509 3510void SSL_set_psk_server_callback(SSL *s, 3511 unsigned int (*cb) (SSL *ssl, 3512 const char *identity, 3513 unsigned char *psk, 3514 unsigned int 3515 max_psk_len)) 3516{ 3517 s->psk_server_callback = cb; 3518} 3519 3520void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3521 unsigned int (*cb) (SSL *ssl, 3522 const char *identity, 3523 unsigned char *psk, 3524 unsigned int 3525 max_psk_len)) 3526{ 3527 ctx->psk_server_callback = cb; 3528} 3529#endif 3530 3531void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3532 void (*cb) (int write_p, int version, 3533 int content_type, const void *buf, 3534 size_t len, SSL *ssl, void *arg)) 3535{ 3536 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3537} 3538 3539void SSL_set_msg_callback(SSL *ssl, 3540 void (*cb) (int write_p, int version, 3541 int content_type, const void *buf, 3542 size_t len, SSL *ssl, void *arg)) 3543{ 3544 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3545} 3546 3547/* 3548 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3549 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3550 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3551 * allocated ctx; 3552 */ 3553 3554EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3555{ 3556 ssl_clear_hash_ctx(hash); 3557 *hash = EVP_MD_CTX_create(); 3558 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { 3559 EVP_MD_CTX_destroy(*hash); 3560 *hash = NULL; 3561 return NULL; 3562 } 3563 return *hash; 3564} 3565 3566void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3567{ 3568 3569 if (*hash) 3570 EVP_MD_CTX_destroy(*hash); 3571 *hash = NULL; 3572} 3573 3574void SSL_set_debug(SSL *s, int debug) 3575{ 3576 s->debug = debug; 3577} 3578 3579int SSL_cache_hit(SSL *s) 3580{ 3581 return s->hit; 3582} 3583 3584int SSL_is_server(SSL *s) 3585{ 3586 return s->server; 3587} 3588 3589#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3590# include "../crypto/bio/bss_file.c" 3591#endif 3592 3593IMPLEMENT_STACK_OF(SSL_CIPHER) 3594IMPLEMENT_STACK_OF(SSL_COMP) 3595IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3596