ssl_lib.c revision 295009
1/* 2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions. 3 */ 4/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay@cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay@cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60/* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core@openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay@cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh@cryptsoft.com). 111 * 112 */ 113/* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118/* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145#ifdef REF_CHECK 146# include <assert.h> 147#endif 148#include <stdio.h> 149#include "ssl_locl.h" 150#include "kssl_lcl.h" 151#include <openssl/objects.h> 152#include <openssl/lhash.h> 153#include <openssl/x509v3.h> 154#include <openssl/rand.h> 155#include <openssl/ocsp.h> 156#ifndef OPENSSL_NO_DH 157# include <openssl/dh.h> 158#endif 159#ifndef OPENSSL_NO_ENGINE 160# include <openssl/engine.h> 161#endif 162 163const char *SSL_version_str = OPENSSL_VERSION_TEXT; 164 165SSL3_ENC_METHOD ssl3_undef_enc_method = { 166 /* 167 * evil casts, but these functions are only called if there's a library 168 * bug 169 */ 170 (int (*)(SSL *, int))ssl_undefined_function, 171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 172 ssl_undefined_function, 173 (int (*)(SSL *, unsigned char *, unsigned char *, int)) 174 ssl_undefined_function, 175 (int (*)(SSL *, int))ssl_undefined_function, 176 (int (*)(SSL *, const char *, int, unsigned char *)) 177 ssl_undefined_function, 178 0, /* finish_mac_length */ 179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 180 NULL, /* client_finished_label */ 181 0, /* client_finished_label_len */ 182 NULL, /* server_finished_label */ 183 0, /* server_finished_label_len */ 184 (int (*)(int))ssl_undefined_function, 185 (int (*)(SSL *, unsigned char *, size_t, const char *, 186 size_t, const unsigned char *, size_t, 187 int use_context))ssl_undefined_function, 188}; 189 190int SSL_clear(SSL *s) 191{ 192 193 if (s->method == NULL) { 194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED); 195 return (0); 196 } 197 198 if (ssl_clear_bad_session(s)) { 199 SSL_SESSION_free(s->session); 200 s->session = NULL; 201 } 202 203 s->error = 0; 204 s->hit = 0; 205 s->shutdown = 0; 206 207#if 0 208 /* 209 * Disabled since version 1.10 of this file (early return not 210 * needed because SSL_clear is not called when doing renegotiation) 211 */ 212 /* 213 * This is set if we are doing dynamic renegotiation so keep 214 * the old cipher. It is sort of a SSL_clear_lite :-) 215 */ 216 if (s->renegotiate) 217 return (1); 218#else 219 if (s->renegotiate) { 220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR); 221 return 0; 222 } 223#endif 224 225 s->type = 0; 226 227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 228 229 s->version = s->method->version; 230 s->client_version = s->version; 231 s->rwstate = SSL_NOTHING; 232 s->rstate = SSL_ST_READ_HEADER; 233#if 0 234 s->read_ahead = s->ctx->read_ahead; 235#endif 236 237 if (s->init_buf != NULL) { 238 BUF_MEM_free(s->init_buf); 239 s->init_buf = NULL; 240 } 241 242 ssl_clear_cipher_ctx(s); 243 ssl_clear_hash_ctx(&s->read_hash); 244 ssl_clear_hash_ctx(&s->write_hash); 245 246 s->first_packet = 0; 247 248#if 1 249 /* 250 * Check to see if we were changed into a different method, if so, revert 251 * back if we are not doing session-id reuse. 252 */ 253 if (!s->in_handshake && (s->session == NULL) 254 && (s->method != s->ctx->method)) { 255 s->method->ssl_free(s); 256 s->method = s->ctx->method; 257 if (!s->method->ssl_new(s)) 258 return (0); 259 } else 260#endif 261 s->method->ssl_clear(s); 262 return (1); 263} 264 265/** Used to change an SSL_CTXs default SSL method type */ 266int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 267{ 268 STACK_OF(SSL_CIPHER) *sk; 269 270 ctx->method = meth; 271 272 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 273 &(ctx->cipher_list_by_id), 274 meth->version == 275 SSL2_VERSION ? "SSLv2" : 276 SSL_DEFAULT_CIPHER_LIST, ctx->cert); 277 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 278 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 279 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 280 return (0); 281 } 282 return (1); 283} 284 285SSL *SSL_new(SSL_CTX *ctx) 286{ 287 SSL *s; 288 289 if (ctx == NULL) { 290 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX); 291 return (NULL); 292 } 293 if (ctx->method == NULL) { 294 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 295 return (NULL); 296 } 297 298 s = (SSL *)OPENSSL_malloc(sizeof(SSL)); 299 if (s == NULL) 300 goto err; 301 memset(s, 0, sizeof(SSL)); 302 303#ifndef OPENSSL_NO_KRB5 304 s->kssl_ctx = kssl_ctx_new(); 305#endif /* OPENSSL_NO_KRB5 */ 306 307 s->options = ctx->options; 308 s->mode = ctx->mode; 309 s->max_cert_list = ctx->max_cert_list; 310 s->references = 1; 311 312 if (ctx->cert != NULL) { 313 /* 314 * Earlier library versions used to copy the pointer to the CERT, not 315 * its contents; only when setting new parameters for the per-SSL 316 * copy, ssl_cert_new would be called (and the direct reference to 317 * the per-SSL_CTX settings would be lost, but those still were 318 * indirectly accessed for various purposes, and for that reason they 319 * used to be known as s->ctx->default_cert). Now we don't look at the 320 * SSL_CTX's CERT after having duplicated it once. 321 */ 322 323 s->cert = ssl_cert_dup(ctx->cert); 324 if (s->cert == NULL) 325 goto err; 326 } else 327 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */ 328 329 s->read_ahead = ctx->read_ahead; 330 s->msg_callback = ctx->msg_callback; 331 s->msg_callback_arg = ctx->msg_callback_arg; 332 s->verify_mode = ctx->verify_mode; 333#if 0 334 s->verify_depth = ctx->verify_depth; 335#endif 336 s->sid_ctx_length = ctx->sid_ctx_length; 337 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 338 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 339 s->verify_callback = ctx->default_verify_callback; 340 s->generate_session_id = ctx->generate_session_id; 341 342 s->param = X509_VERIFY_PARAM_new(); 343 if (!s->param) 344 goto err; 345 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 346#if 0 347 s->purpose = ctx->purpose; 348 s->trust = ctx->trust; 349#endif 350 s->quiet_shutdown = ctx->quiet_shutdown; 351 s->max_send_fragment = ctx->max_send_fragment; 352 353 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 354 s->ctx = ctx; 355#ifndef OPENSSL_NO_TLSEXT 356 s->tlsext_debug_cb = 0; 357 s->tlsext_debug_arg = NULL; 358 s->tlsext_ticket_expected = 0; 359 s->tlsext_status_type = -1; 360 s->tlsext_status_expected = 0; 361 s->tlsext_ocsp_ids = NULL; 362 s->tlsext_ocsp_exts = NULL; 363 s->tlsext_ocsp_resp = NULL; 364 s->tlsext_ocsp_resplen = -1; 365 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 366 s->initial_ctx = ctx; 367# ifndef OPENSSL_NO_EC 368 if (ctx->tlsext_ecpointformatlist) { 369 s->tlsext_ecpointformatlist = 370 BUF_memdup(ctx->tlsext_ecpointformatlist, 371 ctx->tlsext_ecpointformatlist_length); 372 if (!s->tlsext_ecpointformatlist) 373 goto err; 374 s->tlsext_ecpointformatlist_length = 375 ctx->tlsext_ecpointformatlist_length; 376 } 377 if (ctx->tlsext_ellipticcurvelist) { 378 s->tlsext_ellipticcurvelist = 379 BUF_memdup(ctx->tlsext_ellipticcurvelist, 380 ctx->tlsext_ellipticcurvelist_length); 381 if (!s->tlsext_ellipticcurvelist) 382 goto err; 383 s->tlsext_ellipticcurvelist_length = 384 ctx->tlsext_ellipticcurvelist_length; 385 } 386# endif 387# ifndef OPENSSL_NO_NEXTPROTONEG 388 s->next_proto_negotiated = NULL; 389# endif 390 391 if (s->ctx->alpn_client_proto_list) { 392 s->alpn_client_proto_list = 393 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); 394 if (s->alpn_client_proto_list == NULL) 395 goto err; 396 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, 397 s->ctx->alpn_client_proto_list_len); 398 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; 399 } 400#endif 401 402 s->verify_result = X509_V_OK; 403 404 s->method = ctx->method; 405 406 if (!s->method->ssl_new(s)) 407 goto err; 408 409 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 410 411 SSL_clear(s); 412 413 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 414 415#ifndef OPENSSL_NO_PSK 416 s->psk_client_callback = ctx->psk_client_callback; 417 s->psk_server_callback = ctx->psk_server_callback; 418#endif 419 420 return (s); 421 err: 422 if (s != NULL) 423 SSL_free(s); 424 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 425 return (NULL); 426} 427 428int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 429 unsigned int sid_ctx_len) 430{ 431 if (sid_ctx_len > sizeof ctx->sid_ctx) { 432 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 433 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 434 return 0; 435 } 436 ctx->sid_ctx_length = sid_ctx_len; 437 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 438 439 return 1; 440} 441 442int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 443 unsigned int sid_ctx_len) 444{ 445 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 446 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 447 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 448 return 0; 449 } 450 ssl->sid_ctx_length = sid_ctx_len; 451 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 452 453 return 1; 454} 455 456int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 457{ 458 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 459 ctx->generate_session_id = cb; 460 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 461 return 1; 462} 463 464int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 465{ 466 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 467 ssl->generate_session_id = cb; 468 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 469 return 1; 470} 471 472int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 473 unsigned int id_len) 474{ 475 /* 476 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 477 * we can "construct" a session to give us the desired check - ie. to 478 * find if there's a session in the hash table that would conflict with 479 * any new session built out of this id/id_len and the ssl_version in use 480 * by this SSL. 481 */ 482 SSL_SESSION r, *p; 483 484 if (id_len > sizeof r.session_id) 485 return 0; 486 487 r.ssl_version = ssl->version; 488 r.session_id_length = id_len; 489 memcpy(r.session_id, id, id_len); 490 /* 491 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 492 * callback is calling us to check the uniqueness of a shorter ID, it 493 * must be compared as a padded-out ID because that is what it will be 494 * converted to when the callback has finished choosing it. 495 */ 496 if ((r.ssl_version == SSL2_VERSION) && 497 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) { 498 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len); 499 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 500 } 501 502 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 503 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 504 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 505 return (p != NULL); 506} 507 508int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 509{ 510 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 511} 512 513int SSL_set_purpose(SSL *s, int purpose) 514{ 515 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 516} 517 518int SSL_CTX_set_trust(SSL_CTX *s, int trust) 519{ 520 return X509_VERIFY_PARAM_set_trust(s->param, trust); 521} 522 523int SSL_set_trust(SSL *s, int trust) 524{ 525 return X509_VERIFY_PARAM_set_trust(s->param, trust); 526} 527 528int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 529{ 530 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 531} 532 533int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 534{ 535 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 536} 537 538X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) 539{ 540 return ctx->param; 541} 542 543X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) 544{ 545 return ssl->param; 546} 547 548void SSL_certs_clear(SSL *s) 549{ 550 ssl_cert_clear_certs(s->cert); 551} 552 553void SSL_free(SSL *s) 554{ 555 int i; 556 557 if (s == NULL) 558 return; 559 560 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 561#ifdef REF_PRINT 562 REF_PRINT("SSL", s); 563#endif 564 if (i > 0) 565 return; 566#ifdef REF_CHECK 567 if (i < 0) { 568 fprintf(stderr, "SSL_free, bad reference count\n"); 569 abort(); /* ok */ 570 } 571#endif 572 573 if (s->param) 574 X509_VERIFY_PARAM_free(s->param); 575 576 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 577 578 if (s->bbio != NULL) { 579 /* If the buffering BIO is in place, pop it off */ 580 if (s->bbio == s->wbio) { 581 s->wbio = BIO_pop(s->wbio); 582 } 583 BIO_free(s->bbio); 584 s->bbio = NULL; 585 } 586 if (s->rbio != NULL) 587 BIO_free_all(s->rbio); 588 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 589 BIO_free_all(s->wbio); 590 591 if (s->init_buf != NULL) 592 BUF_MEM_free(s->init_buf); 593 594 /* add extra stuff */ 595 if (s->cipher_list != NULL) 596 sk_SSL_CIPHER_free(s->cipher_list); 597 if (s->cipher_list_by_id != NULL) 598 sk_SSL_CIPHER_free(s->cipher_list_by_id); 599 600 /* Make the next call work :-) */ 601 if (s->session != NULL) { 602 ssl_clear_bad_session(s); 603 SSL_SESSION_free(s->session); 604 } 605 606 ssl_clear_cipher_ctx(s); 607 ssl_clear_hash_ctx(&s->read_hash); 608 ssl_clear_hash_ctx(&s->write_hash); 609 610 if (s->cert != NULL) 611 ssl_cert_free(s->cert); 612 /* Free up if allocated */ 613 614#ifndef OPENSSL_NO_TLSEXT 615 if (s->tlsext_hostname) 616 OPENSSL_free(s->tlsext_hostname); 617 if (s->initial_ctx) 618 SSL_CTX_free(s->initial_ctx); 619# ifndef OPENSSL_NO_EC 620 if (s->tlsext_ecpointformatlist) 621 OPENSSL_free(s->tlsext_ecpointformatlist); 622 if (s->tlsext_ellipticcurvelist) 623 OPENSSL_free(s->tlsext_ellipticcurvelist); 624# endif /* OPENSSL_NO_EC */ 625 if (s->tlsext_opaque_prf_input) 626 OPENSSL_free(s->tlsext_opaque_prf_input); 627 if (s->tlsext_ocsp_exts) 628 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); 629 if (s->tlsext_ocsp_ids) 630 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 631 if (s->tlsext_ocsp_resp) 632 OPENSSL_free(s->tlsext_ocsp_resp); 633 if (s->alpn_client_proto_list) 634 OPENSSL_free(s->alpn_client_proto_list); 635#endif 636 637 if (s->client_CA != NULL) 638 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 639 640 if (s->method != NULL) 641 s->method->ssl_free(s); 642 643 if (s->ctx) 644 SSL_CTX_free(s->ctx); 645 646#ifndef OPENSSL_NO_KRB5 647 if (s->kssl_ctx != NULL) 648 kssl_ctx_free(s->kssl_ctx); 649#endif /* OPENSSL_NO_KRB5 */ 650 651#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 652 if (s->next_proto_negotiated) 653 OPENSSL_free(s->next_proto_negotiated); 654#endif 655 656#ifndef OPENSSL_NO_SRTP 657 if (s->srtp_profiles) 658 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 659#endif 660 661 OPENSSL_free(s); 662} 663 664void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 665{ 666 /* 667 * If the output buffering BIO is still in place, remove it 668 */ 669 if (s->bbio != NULL) { 670 if (s->wbio == s->bbio) { 671 s->wbio = s->wbio->next_bio; 672 s->bbio->next_bio = NULL; 673 } 674 } 675 if ((s->rbio != NULL) && (s->rbio != rbio)) 676 BIO_free_all(s->rbio); 677 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 678 BIO_free_all(s->wbio); 679 s->rbio = rbio; 680 s->wbio = wbio; 681} 682 683BIO *SSL_get_rbio(const SSL *s) 684{ 685 return (s->rbio); 686} 687 688BIO *SSL_get_wbio(const SSL *s) 689{ 690 return (s->wbio); 691} 692 693int SSL_get_fd(const SSL *s) 694{ 695 return (SSL_get_rfd(s)); 696} 697 698int SSL_get_rfd(const SSL *s) 699{ 700 int ret = -1; 701 BIO *b, *r; 702 703 b = SSL_get_rbio(s); 704 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 705 if (r != NULL) 706 BIO_get_fd(r, &ret); 707 return (ret); 708} 709 710int SSL_get_wfd(const SSL *s) 711{ 712 int ret = -1; 713 BIO *b, *r; 714 715 b = SSL_get_wbio(s); 716 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 717 if (r != NULL) 718 BIO_get_fd(r, &ret); 719 return (ret); 720} 721 722#ifndef OPENSSL_NO_SOCK 723int SSL_set_fd(SSL *s, int fd) 724{ 725 int ret = 0; 726 BIO *bio = NULL; 727 728 bio = BIO_new(BIO_s_socket()); 729 730 if (bio == NULL) { 731 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 732 goto err; 733 } 734 BIO_set_fd(bio, fd, BIO_NOCLOSE); 735 SSL_set_bio(s, bio, bio); 736 ret = 1; 737 err: 738 return (ret); 739} 740 741int SSL_set_wfd(SSL *s, int fd) 742{ 743 int ret = 0; 744 BIO *bio = NULL; 745 746 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 747 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 748 bio = BIO_new(BIO_s_socket()); 749 750 if (bio == NULL) { 751 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 752 goto err; 753 } 754 BIO_set_fd(bio, fd, BIO_NOCLOSE); 755 SSL_set_bio(s, SSL_get_rbio(s), bio); 756 } else 757 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 758 ret = 1; 759 err: 760 return (ret); 761} 762 763int SSL_set_rfd(SSL *s, int fd) 764{ 765 int ret = 0; 766 BIO *bio = NULL; 767 768 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 769 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 770 bio = BIO_new(BIO_s_socket()); 771 772 if (bio == NULL) { 773 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 774 goto err; 775 } 776 BIO_set_fd(bio, fd, BIO_NOCLOSE); 777 SSL_set_bio(s, bio, SSL_get_wbio(s)); 778 } else 779 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 780 ret = 1; 781 err: 782 return (ret); 783} 784#endif 785 786/* return length of latest Finished message we sent, copy to 'buf' */ 787size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 788{ 789 size_t ret = 0; 790 791 if (s->s3 != NULL) { 792 ret = s->s3->tmp.finish_md_len; 793 if (count > ret) 794 count = ret; 795 memcpy(buf, s->s3->tmp.finish_md, count); 796 } 797 return ret; 798} 799 800/* return length of latest Finished message we expected, copy to 'buf' */ 801size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 802{ 803 size_t ret = 0; 804 805 if (s->s3 != NULL) { 806 ret = s->s3->tmp.peer_finish_md_len; 807 if (count > ret) 808 count = ret; 809 memcpy(buf, s->s3->tmp.peer_finish_md, count); 810 } 811 return ret; 812} 813 814int SSL_get_verify_mode(const SSL *s) 815{ 816 return (s->verify_mode); 817} 818 819int SSL_get_verify_depth(const SSL *s) 820{ 821 return X509_VERIFY_PARAM_get_depth(s->param); 822} 823 824int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { 825 return (s->verify_callback); 826} 827 828int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 829{ 830 return (ctx->verify_mode); 831} 832 833int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 834{ 835 return X509_VERIFY_PARAM_get_depth(ctx->param); 836} 837 838int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { 839 return (ctx->default_verify_callback); 840} 841 842void SSL_set_verify(SSL *s, int mode, 843 int (*callback) (int ok, X509_STORE_CTX *ctx)) 844{ 845 s->verify_mode = mode; 846 if (callback != NULL) 847 s->verify_callback = callback; 848} 849 850void SSL_set_verify_depth(SSL *s, int depth) 851{ 852 X509_VERIFY_PARAM_set_depth(s->param, depth); 853} 854 855void SSL_set_read_ahead(SSL *s, int yes) 856{ 857 s->read_ahead = yes; 858} 859 860int SSL_get_read_ahead(const SSL *s) 861{ 862 return (s->read_ahead); 863} 864 865int SSL_pending(const SSL *s) 866{ 867 /* 868 * SSL_pending cannot work properly if read-ahead is enabled 869 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is 870 * impossible to fix since SSL_pending cannot report errors that may be 871 * observed while scanning the new data. (Note that SSL_pending() is 872 * often used as a boolean value, so we'd better not return -1.) 873 */ 874 return (s->method->ssl_pending(s)); 875} 876 877X509 *SSL_get_peer_certificate(const SSL *s) 878{ 879 X509 *r; 880 881 if ((s == NULL) || (s->session == NULL)) 882 r = NULL; 883 else 884 r = s->session->peer; 885 886 if (r == NULL) 887 return (r); 888 889 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 890 891 return (r); 892} 893 894STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 895{ 896 STACK_OF(X509) *r; 897 898 if ((s == NULL) || (s->session == NULL) 899 || (s->session->sess_cert == NULL)) 900 r = NULL; 901 else 902 r = s->session->sess_cert->cert_chain; 903 904 /* 905 * If we are a client, cert_chain includes the peer's own certificate; if 906 * we are a server, it does not. 907 */ 908 909 return (r); 910} 911 912/* 913 * Now in theory, since the calling process own 't' it should be safe to 914 * modify. We need to be able to read f without being hassled 915 */ 916void SSL_copy_session_id(SSL *t, const SSL *f) 917{ 918 CERT *tmp; 919 920 /* Do we need to to SSL locking? */ 921 SSL_set_session(t, SSL_get_session(f)); 922 923 /* 924 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa 925 */ 926 if (t->method != f->method) { 927 t->method->ssl_free(t); /* cleanup current */ 928 t->method = f->method; /* change method */ 929 t->method->ssl_new(t); /* setup new */ 930 } 931 932 tmp = t->cert; 933 if (f->cert != NULL) { 934 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 935 t->cert = f->cert; 936 } else 937 t->cert = NULL; 938 if (tmp != NULL) 939 ssl_cert_free(tmp); 940 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 941} 942 943/* Fix this so it checks all the valid key/cert options */ 944int SSL_CTX_check_private_key(const SSL_CTX *ctx) 945{ 946 if ((ctx == NULL) || 947 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) { 948 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 949 SSL_R_NO_CERTIFICATE_ASSIGNED); 950 return (0); 951 } 952 if (ctx->cert->key->privatekey == NULL) { 953 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 954 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 955 return (0); 956 } 957 return (X509_check_private_key 958 (ctx->cert->key->x509, ctx->cert->key->privatekey)); 959} 960 961/* Fix this function so that it takes an optional type parameter */ 962int SSL_check_private_key(const SSL *ssl) 963{ 964 if (ssl == NULL) { 965 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 966 return (0); 967 } 968 if (ssl->cert == NULL) { 969 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 970 return 0; 971 } 972 if (ssl->cert->key->x509 == NULL) { 973 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 974 return (0); 975 } 976 if (ssl->cert->key->privatekey == NULL) { 977 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 978 return (0); 979 } 980 return (X509_check_private_key(ssl->cert->key->x509, 981 ssl->cert->key->privatekey)); 982} 983 984int SSL_accept(SSL *s) 985{ 986 if (s->handshake_func == 0) 987 /* Not properly initialized yet */ 988 SSL_set_accept_state(s); 989 990 return (s->method->ssl_accept(s)); 991} 992 993int SSL_connect(SSL *s) 994{ 995 if (s->handshake_func == 0) 996 /* Not properly initialized yet */ 997 SSL_set_connect_state(s); 998 999 return (s->method->ssl_connect(s)); 1000} 1001 1002long SSL_get_default_timeout(const SSL *s) 1003{ 1004 return (s->method->get_timeout()); 1005} 1006 1007int SSL_read(SSL *s, void *buf, int num) 1008{ 1009 if (s->handshake_func == 0) { 1010 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 1011 return -1; 1012 } 1013 1014 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1015 s->rwstate = SSL_NOTHING; 1016 return (0); 1017 } 1018 return (s->method->ssl_read(s, buf, num)); 1019} 1020 1021int SSL_peek(SSL *s, void *buf, int num) 1022{ 1023 if (s->handshake_func == 0) { 1024 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 1025 return -1; 1026 } 1027 1028 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 1029 return (0); 1030 } 1031 return (s->method->ssl_peek(s, buf, num)); 1032} 1033 1034int SSL_write(SSL *s, const void *buf, int num) 1035{ 1036 if (s->handshake_func == 0) { 1037 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 1038 return -1; 1039 } 1040 1041 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1042 s->rwstate = SSL_NOTHING; 1043 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 1044 return (-1); 1045 } 1046 return (s->method->ssl_write(s, buf, num)); 1047} 1048 1049int SSL_shutdown(SSL *s) 1050{ 1051 /* 1052 * Note that this function behaves differently from what one might 1053 * expect. Return values are 0 for no success (yet), 1 for success; but 1054 * calling it once is usually not enough, even if blocking I/O is used 1055 * (see ssl3_shutdown). 1056 */ 1057 1058 if (s->handshake_func == 0) { 1059 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1060 return -1; 1061 } 1062 1063 return s->method->ssl_shutdown(s); 1064} 1065 1066int SSL_renegotiate(SSL *s) 1067{ 1068 if (s->renegotiate == 0) 1069 s->renegotiate = 1; 1070 1071 s->new_session = 1; 1072 1073 return (s->method->ssl_renegotiate(s)); 1074} 1075 1076int SSL_renegotiate_abbreviated(SSL *s) 1077{ 1078 if (s->renegotiate == 0) 1079 s->renegotiate = 1; 1080 1081 s->new_session = 0; 1082 1083 return (s->method->ssl_renegotiate(s)); 1084} 1085 1086int SSL_renegotiate_pending(SSL *s) 1087{ 1088 /* 1089 * becomes true when negotiation is requested; false again once a 1090 * handshake has finished 1091 */ 1092 return (s->renegotiate != 0); 1093} 1094 1095long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1096{ 1097 long l; 1098 1099 switch (cmd) { 1100 case SSL_CTRL_GET_READ_AHEAD: 1101 return (s->read_ahead); 1102 case SSL_CTRL_SET_READ_AHEAD: 1103 l = s->read_ahead; 1104 s->read_ahead = larg; 1105 return (l); 1106 1107 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1108 s->msg_callback_arg = parg; 1109 return 1; 1110 1111 case SSL_CTRL_OPTIONS: 1112 return (s->options |= larg); 1113 case SSL_CTRL_CLEAR_OPTIONS: 1114 return (s->options &= ~larg); 1115 case SSL_CTRL_MODE: 1116 return (s->mode |= larg); 1117 case SSL_CTRL_CLEAR_MODE: 1118 return (s->mode &= ~larg); 1119 case SSL_CTRL_GET_MAX_CERT_LIST: 1120 return (s->max_cert_list); 1121 case SSL_CTRL_SET_MAX_CERT_LIST: 1122 l = s->max_cert_list; 1123 s->max_cert_list = larg; 1124 return (l); 1125 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1126 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1127 return 0; 1128 s->max_send_fragment = larg; 1129 return 1; 1130 case SSL_CTRL_GET_RI_SUPPORT: 1131 if (s->s3) 1132 return s->s3->send_connection_binding; 1133 else 1134 return 0; 1135 case SSL_CTRL_CERT_FLAGS: 1136 return (s->cert->cert_flags |= larg); 1137 case SSL_CTRL_CLEAR_CERT_FLAGS: 1138 return (s->cert->cert_flags &= ~larg); 1139 1140 case SSL_CTRL_GET_RAW_CIPHERLIST: 1141 if (parg) { 1142 if (s->cert->ciphers_raw == NULL) 1143 return 0; 1144 *(unsigned char **)parg = s->cert->ciphers_raw; 1145 return (int)s->cert->ciphers_rawlen; 1146 } else 1147 return ssl_put_cipher_by_char(s, NULL, NULL); 1148 default: 1149 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1150 } 1151} 1152 1153long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) 1154{ 1155 switch (cmd) { 1156 case SSL_CTRL_SET_MSG_CALLBACK: 1157 s->msg_callback = (void (*) 1158 (int write_p, int version, int content_type, 1159 const void *buf, size_t len, SSL *ssl, 1160 void *arg))(fp); 1161 return 1; 1162 1163 default: 1164 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1165 } 1166} 1167 1168LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1169{ 1170 return ctx->sessions; 1171} 1172 1173long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1174{ 1175 long l; 1176 /* For some cases with ctx == NULL perform syntax checks */ 1177 if (ctx == NULL) { 1178 switch (cmd) { 1179#ifndef OPENSSL_NO_EC 1180 case SSL_CTRL_SET_CURVES_LIST: 1181 return tls1_set_curves_list(NULL, NULL, parg); 1182#endif 1183 case SSL_CTRL_SET_SIGALGS_LIST: 1184 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: 1185 return tls1_set_sigalgs_list(NULL, parg, 0); 1186 default: 1187 return 0; 1188 } 1189 } 1190 1191 switch (cmd) { 1192 case SSL_CTRL_GET_READ_AHEAD: 1193 return (ctx->read_ahead); 1194 case SSL_CTRL_SET_READ_AHEAD: 1195 l = ctx->read_ahead; 1196 ctx->read_ahead = larg; 1197 return (l); 1198 1199 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1200 ctx->msg_callback_arg = parg; 1201 return 1; 1202 1203 case SSL_CTRL_GET_MAX_CERT_LIST: 1204 return (ctx->max_cert_list); 1205 case SSL_CTRL_SET_MAX_CERT_LIST: 1206 l = ctx->max_cert_list; 1207 ctx->max_cert_list = larg; 1208 return (l); 1209 1210 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1211 l = ctx->session_cache_size; 1212 ctx->session_cache_size = larg; 1213 return (l); 1214 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1215 return (ctx->session_cache_size); 1216 case SSL_CTRL_SET_SESS_CACHE_MODE: 1217 l = ctx->session_cache_mode; 1218 ctx->session_cache_mode = larg; 1219 return (l); 1220 case SSL_CTRL_GET_SESS_CACHE_MODE: 1221 return (ctx->session_cache_mode); 1222 1223 case SSL_CTRL_SESS_NUMBER: 1224 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1225 case SSL_CTRL_SESS_CONNECT: 1226 return (ctx->stats.sess_connect); 1227 case SSL_CTRL_SESS_CONNECT_GOOD: 1228 return (ctx->stats.sess_connect_good); 1229 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1230 return (ctx->stats.sess_connect_renegotiate); 1231 case SSL_CTRL_SESS_ACCEPT: 1232 return (ctx->stats.sess_accept); 1233 case SSL_CTRL_SESS_ACCEPT_GOOD: 1234 return (ctx->stats.sess_accept_good); 1235 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1236 return (ctx->stats.sess_accept_renegotiate); 1237 case SSL_CTRL_SESS_HIT: 1238 return (ctx->stats.sess_hit); 1239 case SSL_CTRL_SESS_CB_HIT: 1240 return (ctx->stats.sess_cb_hit); 1241 case SSL_CTRL_SESS_MISSES: 1242 return (ctx->stats.sess_miss); 1243 case SSL_CTRL_SESS_TIMEOUTS: 1244 return (ctx->stats.sess_timeout); 1245 case SSL_CTRL_SESS_CACHE_FULL: 1246 return (ctx->stats.sess_cache_full); 1247 case SSL_CTRL_OPTIONS: 1248 return (ctx->options |= larg); 1249 case SSL_CTRL_CLEAR_OPTIONS: 1250 return (ctx->options &= ~larg); 1251 case SSL_CTRL_MODE: 1252 return (ctx->mode |= larg); 1253 case SSL_CTRL_CLEAR_MODE: 1254 return (ctx->mode &= ~larg); 1255 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1256 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1257 return 0; 1258 ctx->max_send_fragment = larg; 1259 return 1; 1260 case SSL_CTRL_CERT_FLAGS: 1261 return (ctx->cert->cert_flags |= larg); 1262 case SSL_CTRL_CLEAR_CERT_FLAGS: 1263 return (ctx->cert->cert_flags &= ~larg); 1264 default: 1265 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1266 } 1267} 1268 1269long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) 1270{ 1271 switch (cmd) { 1272 case SSL_CTRL_SET_MSG_CALLBACK: 1273 ctx->msg_callback = (void (*) 1274 (int write_p, int version, int content_type, 1275 const void *buf, size_t len, SSL *ssl, 1276 void *arg))(fp); 1277 return 1; 1278 1279 default: 1280 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1281 } 1282} 1283 1284int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1285{ 1286 long l; 1287 1288 l = a->id - b->id; 1289 if (l == 0L) 1290 return (0); 1291 else 1292 return ((l > 0) ? 1 : -1); 1293} 1294 1295int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 1296 const SSL_CIPHER *const *bp) 1297{ 1298 long l; 1299 1300 l = (*ap)->id - (*bp)->id; 1301 if (l == 0L) 1302 return (0); 1303 else 1304 return ((l > 0) ? 1 : -1); 1305} 1306 1307/** return a STACK of the ciphers available for the SSL and in order of 1308 * preference */ 1309STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1310{ 1311 if (s != NULL) { 1312 if (s->cipher_list != NULL) { 1313 return (s->cipher_list); 1314 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1315 return (s->ctx->cipher_list); 1316 } 1317 } 1318 return (NULL); 1319} 1320 1321/** return a STACK of the ciphers available for the SSL and in order of 1322 * algorithm id */ 1323STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1324{ 1325 if (s != NULL) { 1326 if (s->cipher_list_by_id != NULL) { 1327 return (s->cipher_list_by_id); 1328 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { 1329 return (s->ctx->cipher_list_by_id); 1330 } 1331 } 1332 return (NULL); 1333} 1334 1335/** The old interface to get the same thing as SSL_get_ciphers() */ 1336const char *SSL_get_cipher_list(const SSL *s, int n) 1337{ 1338 SSL_CIPHER *c; 1339 STACK_OF(SSL_CIPHER) *sk; 1340 1341 if (s == NULL) 1342 return (NULL); 1343 sk = SSL_get_ciphers(s); 1344 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1345 return (NULL); 1346 c = sk_SSL_CIPHER_value(sk, n); 1347 if (c == NULL) 1348 return (NULL); 1349 return (c->name); 1350} 1351 1352/** specify the ciphers to be used by default by the SSL_CTX */ 1353int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1354{ 1355 STACK_OF(SSL_CIPHER) *sk; 1356 1357 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1358 &ctx->cipher_list_by_id, str, ctx->cert); 1359 /* 1360 * ssl_create_cipher_list may return an empty stack if it was unable to 1361 * find a cipher matching the given rule string (for example if the rule 1362 * string specifies a cipher which has been disabled). This is not an 1363 * error as far as ssl_create_cipher_list is concerned, and hence 1364 * ctx->cipher_list and ctx->cipher_list_by_id has been updated. 1365 */ 1366 if (sk == NULL) 1367 return 0; 1368 else if (sk_SSL_CIPHER_num(sk) == 0) { 1369 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1370 return 0; 1371 } 1372 return 1; 1373} 1374 1375/** specify the ciphers to be used by the SSL */ 1376int SSL_set_cipher_list(SSL *s, const char *str) 1377{ 1378 STACK_OF(SSL_CIPHER) *sk; 1379 1380 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1381 &s->cipher_list_by_id, str, s->cert); 1382 /* see comment in SSL_CTX_set_cipher_list */ 1383 if (sk == NULL) 1384 return 0; 1385 else if (sk_SSL_CIPHER_num(sk) == 0) { 1386 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1387 return 0; 1388 } 1389 return 1; 1390} 1391 1392/* works well for SSLv2, not so good for SSLv3 */ 1393char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1394{ 1395 char *p; 1396 STACK_OF(SSL_CIPHER) *sk; 1397 SSL_CIPHER *c; 1398 int i; 1399 1400 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) 1401 return (NULL); 1402 1403 p = buf; 1404 sk = s->session->ciphers; 1405 1406 if (sk_SSL_CIPHER_num(sk) == 0) 1407 return NULL; 1408 1409 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1410 int n; 1411 1412 c = sk_SSL_CIPHER_value(sk, i); 1413 n = strlen(c->name); 1414 if (n + 1 > len) { 1415 if (p != buf) 1416 --p; 1417 *p = '\0'; 1418 return buf; 1419 } 1420 strcpy(p, c->name); 1421 p += n; 1422 *(p++) = ':'; 1423 len -= n + 1; 1424 } 1425 p[-1] = '\0'; 1426 return (buf); 1427} 1428 1429int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1430 unsigned char *p, 1431 int (*put_cb) (const SSL_CIPHER *, 1432 unsigned char *)) 1433{ 1434 int i, j = 0; 1435 SSL_CIPHER *c; 1436 CERT *ct = s->cert; 1437 unsigned char *q; 1438 int empty_reneg_info_scsv = !s->renegotiate; 1439 /* Set disabled masks for this session */ 1440 ssl_set_client_disabled(s); 1441 1442 if (sk == NULL) 1443 return (0); 1444 q = p; 1445 if (put_cb == NULL) 1446 put_cb = s->method->put_cipher_by_char; 1447 1448 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1449 c = sk_SSL_CIPHER_value(sk, i); 1450 /* Skip disabled ciphers */ 1451 if (c->algorithm_ssl & ct->mask_ssl || 1452 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a) 1453 continue; 1454#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 1455 if (c->id == SSL3_CK_SCSV) { 1456 if (!empty_reneg_info_scsv) 1457 continue; 1458 else 1459 empty_reneg_info_scsv = 0; 1460 } 1461#endif 1462 j = put_cb(c, p); 1463 p += j; 1464 } 1465 /* 1466 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1467 * applicable SCSVs. 1468 */ 1469 if (p != q) { 1470 if (empty_reneg_info_scsv) { 1471 static SSL_CIPHER scsv = { 1472 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1473 }; 1474 j = put_cb(&scsv, p); 1475 p += j; 1476#ifdef OPENSSL_RI_DEBUG 1477 fprintf(stderr, 1478 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1479#endif 1480 } 1481 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1482 static SSL_CIPHER scsv = { 1483 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1484 }; 1485 j = put_cb(&scsv, p); 1486 p += j; 1487 } 1488 } 1489 1490 return (p - q); 1491} 1492 1493STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1494 int num, 1495 STACK_OF(SSL_CIPHER) **skp) 1496{ 1497 const SSL_CIPHER *c; 1498 STACK_OF(SSL_CIPHER) *sk; 1499 int i, n; 1500 1501 if (s->s3) 1502 s->s3->send_connection_binding = 0; 1503 1504 n = ssl_put_cipher_by_char(s, NULL, NULL); 1505 if (n == 0 || (num % n) != 0) { 1506 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1507 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1508 return (NULL); 1509 } 1510 if ((skp == NULL) || (*skp == NULL)) { 1511 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1512 if(sk == NULL) { 1513 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1514 return NULL; 1515 } 1516 } else { 1517 sk = *skp; 1518 sk_SSL_CIPHER_zero(sk); 1519 } 1520 1521 if (s->cert->ciphers_raw) 1522 OPENSSL_free(s->cert->ciphers_raw); 1523 s->cert->ciphers_raw = BUF_memdup(p, num); 1524 if (s->cert->ciphers_raw == NULL) { 1525 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1526 goto err; 1527 } 1528 s->cert->ciphers_rawlen = (size_t)num; 1529 1530 for (i = 0; i < num; i += n) { 1531 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1532 if (s->s3 && (n != 3 || !p[0]) && 1533 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1534 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1535 /* SCSV fatal if renegotiating */ 1536 if (s->renegotiate) { 1537 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1538 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1539 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1540 goto err; 1541 } 1542 s->s3->send_connection_binding = 1; 1543 p += n; 1544#ifdef OPENSSL_RI_DEBUG 1545 fprintf(stderr, "SCSV received by server\n"); 1546#endif 1547 continue; 1548 } 1549 1550 /* Check for TLS_FALLBACK_SCSV */ 1551 if ((n != 3 || !p[0]) && 1552 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1553 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1554 /* 1555 * The SCSV indicates that the client previously tried a higher 1556 * version. Fail if the current version is an unexpected 1557 * downgrade. 1558 */ 1559 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1560 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1561 SSL_R_INAPPROPRIATE_FALLBACK); 1562 if (s->s3) 1563 ssl3_send_alert(s, SSL3_AL_FATAL, 1564 SSL_AD_INAPPROPRIATE_FALLBACK); 1565 goto err; 1566 } 1567 p += n; 1568 continue; 1569 } 1570 1571 c = ssl_get_cipher_by_char(s, p); 1572 p += n; 1573 if (c != NULL) { 1574 if (!sk_SSL_CIPHER_push(sk, c)) { 1575 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1576 goto err; 1577 } 1578 } 1579 } 1580 1581 if (skp != NULL) 1582 *skp = sk; 1583 return (sk); 1584 err: 1585 if ((skp == NULL) || (*skp == NULL)) 1586 sk_SSL_CIPHER_free(sk); 1587 return (NULL); 1588} 1589 1590#ifndef OPENSSL_NO_TLSEXT 1591/** return a servername extension value if provided in Client Hello, or NULL. 1592 * So far, only host_name types are defined (RFC 3546). 1593 */ 1594 1595const char *SSL_get_servername(const SSL *s, const int type) 1596{ 1597 if (type != TLSEXT_NAMETYPE_host_name) 1598 return NULL; 1599 1600 return s->session && !s->tlsext_hostname ? 1601 s->session->tlsext_hostname : s->tlsext_hostname; 1602} 1603 1604int SSL_get_servername_type(const SSL *s) 1605{ 1606 if (s->session 1607 && (!s->tlsext_hostname ? s->session-> 1608 tlsext_hostname : s->tlsext_hostname)) 1609 return TLSEXT_NAMETYPE_host_name; 1610 return -1; 1611} 1612 1613/* 1614 * SSL_select_next_proto implements the standard protocol selection. It is 1615 * expected that this function is called from the callback set by 1616 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1617 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1618 * not included in the length. A byte string of length 0 is invalid. No byte 1619 * string may be truncated. The current, but experimental algorithm for 1620 * selecting the protocol is: 1) If the server doesn't support NPN then this 1621 * is indicated to the callback. In this case, the client application has to 1622 * abort the connection or have a default application level protocol. 2) If 1623 * the server supports NPN, but advertises an empty list then the client 1624 * selects the first protcol in its list, but indicates via the API that this 1625 * fallback case was enacted. 3) Otherwise, the client finds the first 1626 * protocol in the server's list that it supports and selects this protocol. 1627 * This is because it's assumed that the server has better information about 1628 * which protocol a client should use. 4) If the client doesn't support any 1629 * of the server's advertised protocols, then this is treated the same as 1630 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1631 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1632 */ 1633int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1634 const unsigned char *server, 1635 unsigned int server_len, 1636 const unsigned char *client, 1637 unsigned int client_len) 1638{ 1639 unsigned int i, j; 1640 const unsigned char *result; 1641 int status = OPENSSL_NPN_UNSUPPORTED; 1642 1643 /* 1644 * For each protocol in server preference order, see if we support it. 1645 */ 1646 for (i = 0; i < server_len;) { 1647 for (j = 0; j < client_len;) { 1648 if (server[i] == client[j] && 1649 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1650 /* We found a match */ 1651 result = &server[i]; 1652 status = OPENSSL_NPN_NEGOTIATED; 1653 goto found; 1654 } 1655 j += client[j]; 1656 j++; 1657 } 1658 i += server[i]; 1659 i++; 1660 } 1661 1662 /* There's no overlap between our protocols and the server's list. */ 1663 result = client; 1664 status = OPENSSL_NPN_NO_OVERLAP; 1665 1666 found: 1667 *out = (unsigned char *)result + 1; 1668 *outlen = result[0]; 1669 return status; 1670} 1671 1672# ifndef OPENSSL_NO_NEXTPROTONEG 1673/* 1674 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1675 * client's requested protocol for this connection and returns 0. If the 1676 * client didn't request any protocol, then *data is set to NULL. Note that 1677 * the client can request any protocol it chooses. The value returned from 1678 * this function need not be a member of the list of supported protocols 1679 * provided by the callback. 1680 */ 1681void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1682 unsigned *len) 1683{ 1684 *data = s->next_proto_negotiated; 1685 if (!*data) { 1686 *len = 0; 1687 } else { 1688 *len = s->next_proto_negotiated_len; 1689 } 1690} 1691 1692/* 1693 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1694 * a TLS server needs a list of supported protocols for Next Protocol 1695 * Negotiation. The returned list must be in wire format. The list is 1696 * returned by setting |out| to point to it and |outlen| to its length. This 1697 * memory will not be modified, but one should assume that the SSL* keeps a 1698 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1699 * wishes to advertise. Otherwise, no such extension will be included in the 1700 * ServerHello. 1701 */ 1702void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1703 int (*cb) (SSL *ssl, 1704 const unsigned char 1705 **out, 1706 unsigned int *outlen, 1707 void *arg), void *arg) 1708{ 1709 ctx->next_protos_advertised_cb = cb; 1710 ctx->next_protos_advertised_cb_arg = arg; 1711} 1712 1713/* 1714 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1715 * client needs to select a protocol from the server's provided list. |out| 1716 * must be set to point to the selected protocol (which may be within |in|). 1717 * The length of the protocol name must be written into |outlen|. The 1718 * server's advertised protocols are provided in |in| and |inlen|. The 1719 * callback can assume that |in| is syntactically valid. The client must 1720 * select a protocol. It is fatal to the connection if this callback returns 1721 * a value other than SSL_TLSEXT_ERR_OK. 1722 */ 1723void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1724 int (*cb) (SSL *s, unsigned char **out, 1725 unsigned char *outlen, 1726 const unsigned char *in, 1727 unsigned int inlen, 1728 void *arg), void *arg) 1729{ 1730 ctx->next_proto_select_cb = cb; 1731 ctx->next_proto_select_cb_arg = arg; 1732} 1733# endif 1734 1735/* 1736 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1737 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1738 * length-prefixed strings). Returns 0 on success. 1739 */ 1740int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1741 unsigned protos_len) 1742{ 1743 if (ctx->alpn_client_proto_list) 1744 OPENSSL_free(ctx->alpn_client_proto_list); 1745 1746 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1747 if (!ctx->alpn_client_proto_list) 1748 return 1; 1749 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1750 ctx->alpn_client_proto_list_len = protos_len; 1751 1752 return 0; 1753} 1754 1755/* 1756 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1757 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1758 * length-prefixed strings). Returns 0 on success. 1759 */ 1760int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1761 unsigned protos_len) 1762{ 1763 if (ssl->alpn_client_proto_list) 1764 OPENSSL_free(ssl->alpn_client_proto_list); 1765 1766 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1767 if (!ssl->alpn_client_proto_list) 1768 return 1; 1769 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1770 ssl->alpn_client_proto_list_len = protos_len; 1771 1772 return 0; 1773} 1774 1775/* 1776 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is 1777 * called during ClientHello processing in order to select an ALPN protocol 1778 * from the client's list of offered protocols. 1779 */ 1780void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, 1781 int (*cb) (SSL *ssl, 1782 const unsigned char **out, 1783 unsigned char *outlen, 1784 const unsigned char *in, 1785 unsigned int inlen, 1786 void *arg), void *arg) 1787{ 1788 ctx->alpn_select_cb = cb; 1789 ctx->alpn_select_cb_arg = arg; 1790} 1791 1792/* 1793 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from 1794 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name 1795 * (not including the leading length-prefix byte). If the server didn't 1796 * respond with a negotiated protocol then |*len| will be zero. 1797 */ 1798void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1799 unsigned *len) 1800{ 1801 *data = NULL; 1802 if (ssl->s3) 1803 *data = ssl->s3->alpn_selected; 1804 if (*data == NULL) 1805 *len = 0; 1806 else 1807 *len = ssl->s3->alpn_selected_len; 1808} 1809 1810#endif /* !OPENSSL_NO_TLSEXT */ 1811 1812int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1813 const char *label, size_t llen, 1814 const unsigned char *p, size_t plen, 1815 int use_context) 1816{ 1817 if (s->version < TLS1_VERSION) 1818 return -1; 1819 1820 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1821 llen, p, plen, 1822 use_context); 1823} 1824 1825static unsigned long ssl_session_hash(const SSL_SESSION *a) 1826{ 1827 unsigned long l; 1828 1829 l = (unsigned long) 1830 ((unsigned int)a->session_id[0]) | 1831 ((unsigned int)a->session_id[1] << 8L) | 1832 ((unsigned long)a->session_id[2] << 16L) | 1833 ((unsigned long)a->session_id[3] << 24L); 1834 return (l); 1835} 1836 1837/* 1838 * NB: If this function (or indeed the hash function which uses a sort of 1839 * coarser function than this one) is changed, ensure 1840 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1841 * being able to construct an SSL_SESSION that will collide with any existing 1842 * session with a matching session ID. 1843 */ 1844static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1845{ 1846 if (a->ssl_version != b->ssl_version) 1847 return (1); 1848 if (a->session_id_length != b->session_id_length) 1849 return (1); 1850 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1851} 1852 1853/* 1854 * These wrapper functions should remain rather than redeclaring 1855 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1856 * variable. The reason is that the functions aren't static, they're exposed 1857 * via ssl.h. 1858 */ 1859static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1860static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1861 1862SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1863{ 1864 SSL_CTX *ret = NULL; 1865 1866 if (meth == NULL) { 1867 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1868 return (NULL); 1869 } 1870#ifdef OPENSSL_FIPS 1871 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1872 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1873 return NULL; 1874 } 1875#endif 1876 1877 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1878 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1879 goto err; 1880 } 1881 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1882 if (ret == NULL) 1883 goto err; 1884 1885 memset(ret, 0, sizeof(SSL_CTX)); 1886 1887 ret->method = meth; 1888 1889 ret->cert_store = NULL; 1890 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1891 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1892 ret->session_cache_head = NULL; 1893 ret->session_cache_tail = NULL; 1894 1895 /* We take the system default */ 1896 ret->session_timeout = meth->get_timeout(); 1897 1898 ret->new_session_cb = 0; 1899 ret->remove_session_cb = 0; 1900 ret->get_session_cb = 0; 1901 ret->generate_session_id = 0; 1902 1903 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1904 1905 ret->references = 1; 1906 ret->quiet_shutdown = 0; 1907 1908/* ret->cipher=NULL;*/ 1909/*- 1910 ret->s2->challenge=NULL; 1911 ret->master_key=NULL; 1912 ret->key_arg=NULL; 1913 ret->s2->conn_id=NULL; */ 1914 1915 ret->info_callback = NULL; 1916 1917 ret->app_verify_callback = 0; 1918 ret->app_verify_arg = NULL; 1919 1920 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1921 ret->read_ahead = 0; 1922 ret->msg_callback = 0; 1923 ret->msg_callback_arg = NULL; 1924 ret->verify_mode = SSL_VERIFY_NONE; 1925#if 0 1926 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1927#endif 1928 ret->sid_ctx_length = 0; 1929 ret->default_verify_callback = NULL; 1930 if ((ret->cert = ssl_cert_new()) == NULL) 1931 goto err; 1932 1933 ret->default_passwd_callback = 0; 1934 ret->default_passwd_callback_userdata = NULL; 1935 ret->client_cert_cb = 0; 1936 ret->app_gen_cookie_cb = 0; 1937 ret->app_verify_cookie_cb = 0; 1938 1939 ret->sessions = lh_SSL_SESSION_new(); 1940 if (ret->sessions == NULL) 1941 goto err; 1942 ret->cert_store = X509_STORE_new(); 1943 if (ret->cert_store == NULL) 1944 goto err; 1945 1946 ssl_create_cipher_list(ret->method, 1947 &ret->cipher_list, &ret->cipher_list_by_id, 1948 meth->version == 1949 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, 1950 ret->cert); 1951 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1952 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1953 goto err2; 1954 } 1955 1956 ret->param = X509_VERIFY_PARAM_new(); 1957 if (!ret->param) 1958 goto err; 1959 1960 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1961 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1962 goto err2; 1963 } 1964 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1965 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1966 goto err2; 1967 } 1968 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1969 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1970 goto err2; 1971 } 1972 1973 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1974 goto err; 1975 1976 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1977 1978 ret->extra_certs = NULL; 1979 /* No compression for DTLS */ 1980 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)) 1981 ret->comp_methods = SSL_COMP_get_compression_methods(); 1982 1983 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1984 1985#ifndef OPENSSL_NO_TLSEXT 1986 ret->tlsext_servername_callback = 0; 1987 ret->tlsext_servername_arg = NULL; 1988 /* Setup RFC4507 ticket keys */ 1989 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1990 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1991 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1992 ret->options |= SSL_OP_NO_TICKET; 1993 1994 ret->tlsext_status_cb = 0; 1995 ret->tlsext_status_arg = NULL; 1996 1997# ifndef OPENSSL_NO_NEXTPROTONEG 1998 ret->next_protos_advertised_cb = 0; 1999 ret->next_proto_select_cb = 0; 2000# endif 2001#endif 2002#ifndef OPENSSL_NO_PSK 2003 ret->psk_identity_hint = NULL; 2004 ret->psk_client_callback = NULL; 2005 ret->psk_server_callback = NULL; 2006#endif 2007#ifndef OPENSSL_NO_SRP 2008 SSL_CTX_SRP_CTX_init(ret); 2009#endif 2010#ifndef OPENSSL_NO_BUF_FREELISTS 2011 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 2012 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2013 if (!ret->rbuf_freelist) 2014 goto err; 2015 ret->rbuf_freelist->chunklen = 0; 2016 ret->rbuf_freelist->len = 0; 2017 ret->rbuf_freelist->head = NULL; 2018 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2019 if (!ret->wbuf_freelist) { 2020 OPENSSL_free(ret->rbuf_freelist); 2021 goto err; 2022 } 2023 ret->wbuf_freelist->chunklen = 0; 2024 ret->wbuf_freelist->len = 0; 2025 ret->wbuf_freelist->head = NULL; 2026#endif 2027#ifndef OPENSSL_NO_ENGINE 2028 ret->client_cert_engine = NULL; 2029# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2030# define eng_strx(x) #x 2031# define eng_str(x) eng_strx(x) 2032 /* Use specific client engine automatically... ignore errors */ 2033 { 2034 ENGINE *eng; 2035 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2036 if (!eng) { 2037 ERR_clear_error(); 2038 ENGINE_load_builtin_engines(); 2039 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2040 } 2041 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2042 ERR_clear_error(); 2043 } 2044# endif 2045#endif 2046 /* 2047 * Default is to connect to non-RI servers. When RI is more widely 2048 * deployed might change this. 2049 */ 2050 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2051 2052 return (ret); 2053 err: 2054 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 2055 err2: 2056 if (ret != NULL) 2057 SSL_CTX_free(ret); 2058 return (NULL); 2059} 2060 2061#if 0 2062static void SSL_COMP_free(SSL_COMP *comp) 2063{ 2064 OPENSSL_free(comp); 2065} 2066#endif 2067 2068#ifndef OPENSSL_NO_BUF_FREELISTS 2069static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2070{ 2071 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2072 for (ent = list->head; ent; ent = next) { 2073 next = ent->next; 2074 OPENSSL_free(ent); 2075 } 2076 OPENSSL_free(list); 2077} 2078#endif 2079 2080void SSL_CTX_free(SSL_CTX *a) 2081{ 2082 int i; 2083 2084 if (a == NULL) 2085 return; 2086 2087 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 2088#ifdef REF_PRINT 2089 REF_PRINT("SSL_CTX", a); 2090#endif 2091 if (i > 0) 2092 return; 2093#ifdef REF_CHECK 2094 if (i < 0) { 2095 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 2096 abort(); /* ok */ 2097 } 2098#endif 2099 2100 if (a->param) 2101 X509_VERIFY_PARAM_free(a->param); 2102 2103 /* 2104 * Free internal session cache. However: the remove_cb() may reference 2105 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2106 * after the sessions were flushed. 2107 * As the ex_data handling routines might also touch the session cache, 2108 * the most secure solution seems to be: empty (flush) the cache, then 2109 * free ex_data, then finally free the cache. 2110 * (See ticket [openssl.org #212].) 2111 */ 2112 if (a->sessions != NULL) 2113 SSL_CTX_flush_sessions(a, 0); 2114 2115 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2116 2117 if (a->sessions != NULL) 2118 lh_SSL_SESSION_free(a->sessions); 2119 2120 if (a->cert_store != NULL) 2121 X509_STORE_free(a->cert_store); 2122 if (a->cipher_list != NULL) 2123 sk_SSL_CIPHER_free(a->cipher_list); 2124 if (a->cipher_list_by_id != NULL) 2125 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2126 if (a->cert != NULL) 2127 ssl_cert_free(a->cert); 2128 if (a->client_CA != NULL) 2129 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 2130 if (a->extra_certs != NULL) 2131 sk_X509_pop_free(a->extra_certs, X509_free); 2132#if 0 /* This should never be done, since it 2133 * removes a global database */ 2134 if (a->comp_methods != NULL) 2135 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 2136#else 2137 a->comp_methods = NULL; 2138#endif 2139 2140#ifndef OPENSSL_NO_SRTP 2141 if (a->srtp_profiles) 2142 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2143#endif 2144 2145#ifndef OPENSSL_NO_PSK 2146 if (a->psk_identity_hint) 2147 OPENSSL_free(a->psk_identity_hint); 2148#endif 2149#ifndef OPENSSL_NO_SRP 2150 SSL_CTX_SRP_CTX_free(a); 2151#endif 2152#ifndef OPENSSL_NO_ENGINE 2153 if (a->client_cert_engine) 2154 ENGINE_finish(a->client_cert_engine); 2155#endif 2156 2157#ifndef OPENSSL_NO_BUF_FREELISTS 2158 if (a->wbuf_freelist) 2159 ssl_buf_freelist_free(a->wbuf_freelist); 2160 if (a->rbuf_freelist) 2161 ssl_buf_freelist_free(a->rbuf_freelist); 2162#endif 2163#ifndef OPENSSL_NO_TLSEXT 2164# ifndef OPENSSL_NO_EC 2165 if (a->tlsext_ecpointformatlist) 2166 OPENSSL_free(a->tlsext_ecpointformatlist); 2167 if (a->tlsext_ellipticcurvelist) 2168 OPENSSL_free(a->tlsext_ellipticcurvelist); 2169# endif /* OPENSSL_NO_EC */ 2170 if (a->alpn_client_proto_list != NULL) 2171 OPENSSL_free(a->alpn_client_proto_list); 2172#endif 2173 2174 OPENSSL_free(a); 2175} 2176 2177void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2178{ 2179 ctx->default_passwd_callback = cb; 2180} 2181 2182void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2183{ 2184 ctx->default_passwd_callback_userdata = u; 2185} 2186 2187void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2188 int (*cb) (X509_STORE_CTX *, void *), 2189 void *arg) 2190{ 2191 ctx->app_verify_callback = cb; 2192 ctx->app_verify_arg = arg; 2193} 2194 2195void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2196 int (*cb) (int, X509_STORE_CTX *)) 2197{ 2198 ctx->verify_mode = mode; 2199 ctx->default_verify_callback = cb; 2200} 2201 2202void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2203{ 2204 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2205} 2206 2207void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), 2208 void *arg) 2209{ 2210 ssl_cert_set_cert_cb(c->cert, cb, arg); 2211} 2212 2213void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) 2214{ 2215 ssl_cert_set_cert_cb(s->cert, cb, arg); 2216} 2217 2218void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2219{ 2220 CERT_PKEY *cpk; 2221 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2222 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2223 int rsa_tmp_export, dh_tmp_export, kl; 2224 unsigned long mask_k, mask_a, emask_k, emask_a; 2225#ifndef OPENSSL_NO_ECDSA 2226 int have_ecc_cert, ecdsa_ok, ecc_pkey_size; 2227#endif 2228#ifndef OPENSSL_NO_ECDH 2229 int have_ecdh_tmp, ecdh_ok; 2230#endif 2231#ifndef OPENSSL_NO_EC 2232 X509 *x = NULL; 2233 EVP_PKEY *ecc_pkey = NULL; 2234 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2235#endif 2236 if (c == NULL) 2237 return; 2238 2239 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2240 2241#ifndef OPENSSL_NO_RSA 2242 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2243 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2244 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2245#else 2246 rsa_tmp = rsa_tmp_export = 0; 2247#endif 2248#ifndef OPENSSL_NO_DH 2249 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2250 dh_tmp_export = (c->dh_tmp_cb != NULL || 2251 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2252#else 2253 dh_tmp = dh_tmp_export = 0; 2254#endif 2255 2256#ifndef OPENSSL_NO_ECDH 2257 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto); 2258#endif 2259 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2260 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID; 2261 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2262 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2263 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2264 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2265 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2266 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2267 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID; 2268 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2269 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2270/* FIX THIS EAY EAY EAY */ 2271 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID; 2272 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2273 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2274#ifndef OPENSSL_NO_EC 2275 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID; 2276#endif 2277 mask_k = 0; 2278 mask_a = 0; 2279 emask_k = 0; 2280 emask_a = 0; 2281 2282#ifdef CIPHER_DEBUG 2283 fprintf(stderr, 2284 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2285 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2286 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2287#endif 2288 2289 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2290 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2291 mask_k |= SSL_kGOST; 2292 mask_a |= SSL_aGOST01; 2293 } 2294 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2295 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2296 mask_k |= SSL_kGOST; 2297 mask_a |= SSL_aGOST94; 2298 } 2299 2300 if (rsa_enc || (rsa_tmp && rsa_sign)) 2301 mask_k |= SSL_kRSA; 2302 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2303 emask_k |= SSL_kRSA; 2304 2305#if 0 2306 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2307 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2308 mask_k |= SSL_kEDH; 2309 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2310 (rsa_enc || rsa_sign || dsa_sign)) 2311 emask_k |= SSL_kEDH; 2312#endif 2313 2314 if (dh_tmp_export) 2315 emask_k |= SSL_kEDH; 2316 2317 if (dh_tmp) 2318 mask_k |= SSL_kEDH; 2319 2320 if (dh_rsa) 2321 mask_k |= SSL_kDHr; 2322 if (dh_rsa_export) 2323 emask_k |= SSL_kDHr; 2324 2325 if (dh_dsa) 2326 mask_k |= SSL_kDHd; 2327 if (dh_dsa_export) 2328 emask_k |= SSL_kDHd; 2329 2330 if (mask_k & (SSL_kDHr | SSL_kDHd)) 2331 mask_a |= SSL_aDH; 2332 2333 if (rsa_enc || rsa_sign) { 2334 mask_a |= SSL_aRSA; 2335 emask_a |= SSL_aRSA; 2336 } 2337 2338 if (dsa_sign) { 2339 mask_a |= SSL_aDSS; 2340 emask_a |= SSL_aDSS; 2341 } 2342 2343 mask_a |= SSL_aNULL; 2344 emask_a |= SSL_aNULL; 2345 2346#ifndef OPENSSL_NO_KRB5 2347 mask_k |= SSL_kKRB5; 2348 mask_a |= SSL_aKRB5; 2349 emask_k |= SSL_kKRB5; 2350 emask_a |= SSL_aKRB5; 2351#endif 2352 2353 /* 2354 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2355 * depending on the key usage extension. 2356 */ 2357#ifndef OPENSSL_NO_EC 2358 if (have_ecc_cert) { 2359 cpk = &c->pkeys[SSL_PKEY_ECC]; 2360 x = cpk->x509; 2361 /* This call populates extension flags (ex_flags) */ 2362 X509_check_purpose(x, -1, 0); 2363# ifndef OPENSSL_NO_ECDH 2364 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2365 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2366# endif 2367 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2368 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2369 if (!(cpk->valid_flags & CERT_PKEY_SIGN)) 2370 ecdsa_ok = 0; 2371 ecc_pkey = X509_get_pubkey(x); 2372 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2373 EVP_PKEY_free(ecc_pkey); 2374 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2375 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2376 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2377 } 2378# ifndef OPENSSL_NO_ECDH 2379 if (ecdh_ok) { 2380 2381 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2382 mask_k |= SSL_kECDHr; 2383 mask_a |= SSL_aECDH; 2384 if (ecc_pkey_size <= 163) { 2385 emask_k |= SSL_kECDHr; 2386 emask_a |= SSL_aECDH; 2387 } 2388 } 2389 2390 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2391 mask_k |= SSL_kECDHe; 2392 mask_a |= SSL_aECDH; 2393 if (ecc_pkey_size <= 163) { 2394 emask_k |= SSL_kECDHe; 2395 emask_a |= SSL_aECDH; 2396 } 2397 } 2398 } 2399# endif 2400# ifndef OPENSSL_NO_ECDSA 2401 if (ecdsa_ok) { 2402 mask_a |= SSL_aECDSA; 2403 emask_a |= SSL_aECDSA; 2404 } 2405# endif 2406 } 2407#endif 2408 2409#ifndef OPENSSL_NO_ECDH 2410 if (have_ecdh_tmp) { 2411 mask_k |= SSL_kEECDH; 2412 emask_k |= SSL_kEECDH; 2413 } 2414#endif 2415 2416#ifndef OPENSSL_NO_PSK 2417 mask_k |= SSL_kPSK; 2418 mask_a |= SSL_aPSK; 2419 emask_k |= SSL_kPSK; 2420 emask_a |= SSL_aPSK; 2421#endif 2422 2423 c->mask_k = mask_k; 2424 c->mask_a = mask_a; 2425 c->export_mask_k = emask_k; 2426 c->export_mask_a = emask_a; 2427 c->valid = 1; 2428} 2429 2430/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2431#define ku_reject(x, usage) \ 2432 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2433 2434#ifndef OPENSSL_NO_EC 2435 2436int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2437{ 2438 unsigned long alg_k, alg_a; 2439 EVP_PKEY *pkey = NULL; 2440 int keysize = 0; 2441 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2442 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2443 2444 alg_k = cs->algorithm_mkey; 2445 alg_a = cs->algorithm_auth; 2446 2447 if (SSL_C_IS_EXPORT(cs)) { 2448 /* ECDH key length in export ciphers must be <= 163 bits */ 2449 pkey = X509_get_pubkey(x); 2450 if (pkey == NULL) 2451 return 0; 2452 keysize = EVP_PKEY_bits(pkey); 2453 EVP_PKEY_free(pkey); 2454 if (keysize > 163) 2455 return 0; 2456 } 2457 2458 /* This call populates the ex_flags field correctly */ 2459 X509_check_purpose(x, -1, 0); 2460 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2461 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2462 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2463 } 2464 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2465 /* key usage, if present, must allow key agreement */ 2466 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2467 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2468 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2469 return 0; 2470 } 2471 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2472 /* signature alg must be ECDSA */ 2473 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2474 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2475 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2476 return 0; 2477 } 2478 } 2479 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2480 /* signature alg must be RSA */ 2481 2482 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2483 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2484 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2485 return 0; 2486 } 2487 } 2488 } 2489 if (alg_a & SSL_aECDSA) { 2490 /* key usage, if present, must allow signing */ 2491 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2492 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2493 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2494 return 0; 2495 } 2496 } 2497 2498 return 1; /* all checks are ok */ 2499} 2500 2501#endif 2502 2503static int ssl_get_server_cert_index(const SSL *s) 2504{ 2505 int idx; 2506 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); 2507 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) 2508 idx = SSL_PKEY_RSA_SIGN; 2509 if (idx == -1) 2510 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); 2511 return idx; 2512} 2513 2514CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2515{ 2516 CERT *c; 2517 int i; 2518 2519 c = s->cert; 2520 if (!s->s3 || !s->s3->tmp.new_cipher) 2521 return NULL; 2522 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2523 2524#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2525 /* 2526 * Broken protocol test: return last used certificate: which may mismatch 2527 * the one expected. 2528 */ 2529 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2530 return c->key; 2531#endif 2532 2533 i = ssl_get_server_cert_index(s); 2534 2535 /* This may or may not be an error. */ 2536 if (i < 0) 2537 return NULL; 2538 2539 /* May be NULL. */ 2540 return &c->pkeys[i]; 2541} 2542 2543EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2544 const EVP_MD **pmd) 2545{ 2546 unsigned long alg_a; 2547 CERT *c; 2548 int idx = -1; 2549 2550 alg_a = cipher->algorithm_auth; 2551 c = s->cert; 2552 2553#ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2554 /* 2555 * Broken protocol test: use last key: which may mismatch the one 2556 * expected. 2557 */ 2558 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2559 idx = c->key - c->pkeys; 2560 else 2561#endif 2562 2563 if ((alg_a & SSL_aDSS) && 2564 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2565 idx = SSL_PKEY_DSA_SIGN; 2566 else if (alg_a & SSL_aRSA) { 2567 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2568 idx = SSL_PKEY_RSA_SIGN; 2569 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2570 idx = SSL_PKEY_RSA_ENC; 2571 } else if ((alg_a & SSL_aECDSA) && 2572 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2573 idx = SSL_PKEY_ECC; 2574 if (idx == -1) { 2575 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2576 return (NULL); 2577 } 2578 if (pmd) 2579 *pmd = c->pkeys[idx].digest; 2580 return c->pkeys[idx].privatekey; 2581} 2582 2583#ifndef OPENSSL_NO_TLSEXT 2584int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, 2585 size_t *serverinfo_length) 2586{ 2587 CERT *c = NULL; 2588 int i = 0; 2589 *serverinfo_length = 0; 2590 2591 c = s->cert; 2592 i = ssl_get_server_cert_index(s); 2593 2594 if (i == -1) 2595 return 0; 2596 if (c->pkeys[i].serverinfo == NULL) 2597 return 0; 2598 2599 *serverinfo = c->pkeys[i].serverinfo; 2600 *serverinfo_length = c->pkeys[i].serverinfo_length; 2601 return 1; 2602} 2603#endif 2604 2605void ssl_update_cache(SSL *s, int mode) 2606{ 2607 int i; 2608 2609 /* 2610 * If the session_id_length is 0, we are not supposed to cache it, and it 2611 * would be rather hard to do anyway :-) 2612 */ 2613 if (s->session->session_id_length == 0) 2614 return; 2615 2616 i = s->session_ctx->session_cache_mode; 2617 if ((i & mode) && (!s->hit) 2618 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2619 || SSL_CTX_add_session(s->session_ctx, s->session)) 2620 && (s->session_ctx->new_session_cb != NULL)) { 2621 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2622 if (!s->session_ctx->new_session_cb(s, s->session)) 2623 SSL_SESSION_free(s->session); 2624 } 2625 2626 /* auto flush every 255 connections */ 2627 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2628 if ((((mode & SSL_SESS_CACHE_CLIENT) 2629 ? s->session_ctx->stats.sess_connect_good 2630 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2631 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2632 } 2633 } 2634} 2635 2636const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) 2637{ 2638 return ctx->method; 2639} 2640 2641const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2642{ 2643 return (s->method); 2644} 2645 2646int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2647{ 2648 int conn = -1; 2649 int ret = 1; 2650 2651 if (s->method != meth) { 2652 if (s->handshake_func != NULL) 2653 conn = (s->handshake_func == s->method->ssl_connect); 2654 2655 if (s->method->version == meth->version) 2656 s->method = meth; 2657 else { 2658 s->method->ssl_free(s); 2659 s->method = meth; 2660 ret = s->method->ssl_new(s); 2661 } 2662 2663 if (conn == 1) 2664 s->handshake_func = meth->ssl_connect; 2665 else if (conn == 0) 2666 s->handshake_func = meth->ssl_accept; 2667 } 2668 return (ret); 2669} 2670 2671int SSL_get_error(const SSL *s, int i) 2672{ 2673 int reason; 2674 unsigned long l; 2675 BIO *bio; 2676 2677 if (i > 0) 2678 return (SSL_ERROR_NONE); 2679 2680 /* 2681 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2682 * where we do encode the error 2683 */ 2684 if ((l = ERR_peek_error()) != 0) { 2685 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2686 return (SSL_ERROR_SYSCALL); 2687 else 2688 return (SSL_ERROR_SSL); 2689 } 2690 2691 if ((i < 0) && SSL_want_read(s)) { 2692 bio = SSL_get_rbio(s); 2693 if (BIO_should_read(bio)) 2694 return (SSL_ERROR_WANT_READ); 2695 else if (BIO_should_write(bio)) 2696 /* 2697 * This one doesn't make too much sense ... We never try to write 2698 * to the rbio, and an application program where rbio and wbio 2699 * are separate couldn't even know what it should wait for. 2700 * However if we ever set s->rwstate incorrectly (so that we have 2701 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2702 * wbio *are* the same, this test works around that bug; so it 2703 * might be safer to keep it. 2704 */ 2705 return (SSL_ERROR_WANT_WRITE); 2706 else if (BIO_should_io_special(bio)) { 2707 reason = BIO_get_retry_reason(bio); 2708 if (reason == BIO_RR_CONNECT) 2709 return (SSL_ERROR_WANT_CONNECT); 2710 else if (reason == BIO_RR_ACCEPT) 2711 return (SSL_ERROR_WANT_ACCEPT); 2712 else 2713 return (SSL_ERROR_SYSCALL); /* unknown */ 2714 } 2715 } 2716 2717 if ((i < 0) && SSL_want_write(s)) { 2718 bio = SSL_get_wbio(s); 2719 if (BIO_should_write(bio)) 2720 return (SSL_ERROR_WANT_WRITE); 2721 else if (BIO_should_read(bio)) 2722 /* 2723 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2724 */ 2725 return (SSL_ERROR_WANT_READ); 2726 else if (BIO_should_io_special(bio)) { 2727 reason = BIO_get_retry_reason(bio); 2728 if (reason == BIO_RR_CONNECT) 2729 return (SSL_ERROR_WANT_CONNECT); 2730 else if (reason == BIO_RR_ACCEPT) 2731 return (SSL_ERROR_WANT_ACCEPT); 2732 else 2733 return (SSL_ERROR_SYSCALL); 2734 } 2735 } 2736 if ((i < 0) && SSL_want_x509_lookup(s)) { 2737 return (SSL_ERROR_WANT_X509_LOOKUP); 2738 } 2739 2740 if (i == 0) { 2741 if (s->version == SSL2_VERSION) { 2742 /* assume it is the socket being closed */ 2743 return (SSL_ERROR_ZERO_RETURN); 2744 } else { 2745 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2746 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2747 return (SSL_ERROR_ZERO_RETURN); 2748 } 2749 } 2750 return (SSL_ERROR_SYSCALL); 2751} 2752 2753int SSL_do_handshake(SSL *s) 2754{ 2755 int ret = 1; 2756 2757 if (s->handshake_func == NULL) { 2758 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2759 return (-1); 2760 } 2761 2762 s->method->ssl_renegotiate_check(s); 2763 2764 if (SSL_in_init(s) || SSL_in_before(s)) { 2765 ret = s->handshake_func(s); 2766 } 2767 return (ret); 2768} 2769 2770/* 2771 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2772 * calls will reset it 2773 */ 2774void SSL_set_accept_state(SSL *s) 2775{ 2776 s->server = 1; 2777 s->shutdown = 0; 2778 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2779 s->handshake_func = s->method->ssl_accept; 2780 /* clear the current cipher */ 2781 ssl_clear_cipher_ctx(s); 2782 ssl_clear_hash_ctx(&s->read_hash); 2783 ssl_clear_hash_ctx(&s->write_hash); 2784} 2785 2786void SSL_set_connect_state(SSL *s) 2787{ 2788 s->server = 0; 2789 s->shutdown = 0; 2790 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2791 s->handshake_func = s->method->ssl_connect; 2792 /* clear the current cipher */ 2793 ssl_clear_cipher_ctx(s); 2794 ssl_clear_hash_ctx(&s->read_hash); 2795 ssl_clear_hash_ctx(&s->write_hash); 2796} 2797 2798int ssl_undefined_function(SSL *s) 2799{ 2800 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2801 return (0); 2802} 2803 2804int ssl_undefined_void_function(void) 2805{ 2806 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2807 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2808 return (0); 2809} 2810 2811int ssl_undefined_const_function(const SSL *s) 2812{ 2813 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2814 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2815 return (0); 2816} 2817 2818SSL_METHOD *ssl_bad_method(int ver) 2819{ 2820 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2821 return (NULL); 2822} 2823 2824const char *SSL_get_version(const SSL *s) 2825{ 2826 if (s->version == TLS1_2_VERSION) 2827 return ("TLSv1.2"); 2828 else if (s->version == TLS1_1_VERSION) 2829 return ("TLSv1.1"); 2830 else if (s->version == TLS1_VERSION) 2831 return ("TLSv1"); 2832 else if (s->version == SSL3_VERSION) 2833 return ("SSLv3"); 2834 else if (s->version == SSL2_VERSION) 2835 return ("SSLv2"); 2836 else if (s->version == DTLS1_BAD_VER) 2837 return ("DTLSv0.9"); 2838 else if (s->version == DTLS1_VERSION) 2839 return ("DTLSv1"); 2840 else if (s->version == DTLS1_2_VERSION) 2841 return ("DTLSv1.2"); 2842 else 2843 return ("unknown"); 2844} 2845 2846SSL *SSL_dup(SSL *s) 2847{ 2848 STACK_OF(X509_NAME) *sk; 2849 X509_NAME *xn; 2850 SSL *ret; 2851 int i; 2852 2853 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2854 return (NULL); 2855 2856 ret->version = s->version; 2857 ret->type = s->type; 2858 ret->method = s->method; 2859 2860 if (s->session != NULL) { 2861 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2862 SSL_copy_session_id(ret, s); 2863 } else { 2864 /* 2865 * No session has been established yet, so we have to expect that 2866 * s->cert or ret->cert will be changed later -- they should not both 2867 * point to the same object, and thus we can't use 2868 * SSL_copy_session_id. 2869 */ 2870 2871 ret->method->ssl_free(ret); 2872 ret->method = s->method; 2873 ret->method->ssl_new(ret); 2874 2875 if (s->cert != NULL) { 2876 if (ret->cert != NULL) { 2877 ssl_cert_free(ret->cert); 2878 } 2879 ret->cert = ssl_cert_dup(s->cert); 2880 if (ret->cert == NULL) 2881 goto err; 2882 } 2883 2884 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2885 } 2886 2887 ret->options = s->options; 2888 ret->mode = s->mode; 2889 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2890 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2891 ret->msg_callback = s->msg_callback; 2892 ret->msg_callback_arg = s->msg_callback_arg; 2893 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2894 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2895 ret->generate_session_id = s->generate_session_id; 2896 2897 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2898 2899 ret->debug = s->debug; 2900 2901 /* copy app data, a little dangerous perhaps */ 2902 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2903 goto err; 2904 2905 /* setup rbio, and wbio */ 2906 if (s->rbio != NULL) { 2907 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2908 goto err; 2909 } 2910 if (s->wbio != NULL) { 2911 if (s->wbio != s->rbio) { 2912 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2913 goto err; 2914 } else 2915 ret->wbio = ret->rbio; 2916 } 2917 ret->rwstate = s->rwstate; 2918 ret->in_handshake = s->in_handshake; 2919 ret->handshake_func = s->handshake_func; 2920 ret->server = s->server; 2921 ret->renegotiate = s->renegotiate; 2922 ret->new_session = s->new_session; 2923 ret->quiet_shutdown = s->quiet_shutdown; 2924 ret->shutdown = s->shutdown; 2925 ret->state = s->state; /* SSL_dup does not really work at any state, 2926 * though */ 2927 ret->rstate = s->rstate; 2928 ret->init_num = 0; /* would have to copy ret->init_buf, 2929 * ret->init_msg, ret->init_num, 2930 * ret->init_off */ 2931 ret->hit = s->hit; 2932 2933 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2934 2935 /* dup the cipher_list and cipher_list_by_id stacks */ 2936 if (s->cipher_list != NULL) { 2937 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2938 goto err; 2939 } 2940 if (s->cipher_list_by_id != NULL) 2941 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2942 == NULL) 2943 goto err; 2944 2945 /* Dup the client_CA list */ 2946 if (s->client_CA != NULL) { 2947 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2948 goto err; 2949 ret->client_CA = sk; 2950 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2951 xn = sk_X509_NAME_value(sk, i); 2952 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2953 X509_NAME_free(xn); 2954 goto err; 2955 } 2956 } 2957 } 2958 2959 if (0) { 2960 err: 2961 if (ret != NULL) 2962 SSL_free(ret); 2963 ret = NULL; 2964 } 2965 return (ret); 2966} 2967 2968void ssl_clear_cipher_ctx(SSL *s) 2969{ 2970 if (s->enc_read_ctx != NULL) { 2971 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2972 OPENSSL_free(s->enc_read_ctx); 2973 s->enc_read_ctx = NULL; 2974 } 2975 if (s->enc_write_ctx != NULL) { 2976 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2977 OPENSSL_free(s->enc_write_ctx); 2978 s->enc_write_ctx = NULL; 2979 } 2980#ifndef OPENSSL_NO_COMP 2981 if (s->expand != NULL) { 2982 COMP_CTX_free(s->expand); 2983 s->expand = NULL; 2984 } 2985 if (s->compress != NULL) { 2986 COMP_CTX_free(s->compress); 2987 s->compress = NULL; 2988 } 2989#endif 2990} 2991 2992X509 *SSL_get_certificate(const SSL *s) 2993{ 2994 if (s->cert != NULL) 2995 return (s->cert->key->x509); 2996 else 2997 return (NULL); 2998} 2999 3000EVP_PKEY *SSL_get_privatekey(const SSL *s) 3001{ 3002 if (s->cert != NULL) 3003 return (s->cert->key->privatekey); 3004 else 3005 return (NULL); 3006} 3007 3008X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3009{ 3010 if (ctx->cert != NULL) 3011 return ctx->cert->key->x509; 3012 else 3013 return NULL; 3014} 3015 3016EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3017{ 3018 if (ctx->cert != NULL) 3019 return ctx->cert->key->privatekey; 3020 else 3021 return NULL; 3022} 3023 3024const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3025{ 3026 if ((s->session != NULL) && (s->session->cipher != NULL)) 3027 return (s->session->cipher); 3028 return (NULL); 3029} 3030 3031#ifdef OPENSSL_NO_COMP 3032const void *SSL_get_current_compression(SSL *s) 3033{ 3034 return NULL; 3035} 3036 3037const void *SSL_get_current_expansion(SSL *s) 3038{ 3039 return NULL; 3040} 3041#else 3042 3043const COMP_METHOD *SSL_get_current_compression(SSL *s) 3044{ 3045 if (s->compress != NULL) 3046 return (s->compress->meth); 3047 return (NULL); 3048} 3049 3050const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3051{ 3052 if (s->expand != NULL) 3053 return (s->expand->meth); 3054 return (NULL); 3055} 3056#endif 3057 3058int ssl_init_wbio_buffer(SSL *s, int push) 3059{ 3060 BIO *bbio; 3061 3062 if (s->bbio == NULL) { 3063 bbio = BIO_new(BIO_f_buffer()); 3064 if (bbio == NULL) 3065 return (0); 3066 s->bbio = bbio; 3067 } else { 3068 bbio = s->bbio; 3069 if (s->bbio == s->wbio) 3070 s->wbio = BIO_pop(s->wbio); 3071 } 3072 (void)BIO_reset(bbio); 3073/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3074 if (!BIO_set_read_buffer_size(bbio, 1)) { 3075 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 3076 return (0); 3077 } 3078 if (push) { 3079 if (s->wbio != bbio) 3080 s->wbio = BIO_push(bbio, s->wbio); 3081 } else { 3082 if (s->wbio == bbio) 3083 s->wbio = BIO_pop(bbio); 3084 } 3085 return (1); 3086} 3087 3088void ssl_free_wbio_buffer(SSL *s) 3089{ 3090 if (s->bbio == NULL) 3091 return; 3092 3093 if (s->bbio == s->wbio) { 3094 /* remove buffering */ 3095 s->wbio = BIO_pop(s->wbio); 3096#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 3097 * adding one more preprocessor symbol */ 3098 assert(s->wbio != NULL); 3099#endif 3100 } 3101 BIO_free(s->bbio); 3102 s->bbio = NULL; 3103} 3104 3105void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3106{ 3107 ctx->quiet_shutdown = mode; 3108} 3109 3110int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3111{ 3112 return (ctx->quiet_shutdown); 3113} 3114 3115void SSL_set_quiet_shutdown(SSL *s, int mode) 3116{ 3117 s->quiet_shutdown = mode; 3118} 3119 3120int SSL_get_quiet_shutdown(const SSL *s) 3121{ 3122 return (s->quiet_shutdown); 3123} 3124 3125void SSL_set_shutdown(SSL *s, int mode) 3126{ 3127 s->shutdown = mode; 3128} 3129 3130int SSL_get_shutdown(const SSL *s) 3131{ 3132 return (s->shutdown); 3133} 3134 3135int SSL_version(const SSL *s) 3136{ 3137 return (s->version); 3138} 3139 3140SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3141{ 3142 return (ssl->ctx); 3143} 3144 3145SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 3146{ 3147 CERT *ocert = ssl->cert; 3148 if (ssl->ctx == ctx) 3149 return ssl->ctx; 3150#ifndef OPENSSL_NO_TLSEXT 3151 if (ctx == NULL) 3152 ctx = ssl->initial_ctx; 3153#endif 3154 ssl->cert = ssl_cert_dup(ctx->cert); 3155 if (ocert) { 3156 /* Preserve any already negotiated parameters */ 3157 if (ssl->server) { 3158 ssl->cert->peer_sigalgs = ocert->peer_sigalgs; 3159 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen; 3160 ocert->peer_sigalgs = NULL; 3161 ssl->cert->ciphers_raw = ocert->ciphers_raw; 3162 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen; 3163 ocert->ciphers_raw = NULL; 3164 } 3165 ssl_cert_free(ocert); 3166 } 3167 3168 /* 3169 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 3170 * so setter APIs must prevent invalid lengths from entering the system. 3171 */ 3172 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 3173 3174 /* 3175 * If the session ID context matches that of the parent SSL_CTX, 3176 * inherit it from the new SSL_CTX as well. If however the context does 3177 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 3178 * leave it unchanged. 3179 */ 3180 if ((ssl->ctx != NULL) && 3181 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 3182 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 3183 ssl->sid_ctx_length = ctx->sid_ctx_length; 3184 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3185 } 3186 3187 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 3188 if (ssl->ctx != NULL) 3189 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3190 ssl->ctx = ctx; 3191 3192 return (ssl->ctx); 3193} 3194 3195#ifndef OPENSSL_NO_STDIO 3196int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3197{ 3198 return (X509_STORE_set_default_paths(ctx->cert_store)); 3199} 3200 3201int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3202 const char *CApath) 3203{ 3204 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3205} 3206#endif 3207 3208void SSL_set_info_callback(SSL *ssl, 3209 void (*cb) (const SSL *ssl, int type, int val)) 3210{ 3211 ssl->info_callback = cb; 3212} 3213 3214/* 3215 * One compiler (Diab DCC) doesn't like argument names in returned function 3216 * pointer. 3217 */ 3218void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 3219 int /* type */ , 3220 int /* val */ ) { 3221 return ssl->info_callback; 3222} 3223 3224int SSL_state(const SSL *ssl) 3225{ 3226 return (ssl->state); 3227} 3228 3229void SSL_set_state(SSL *ssl, int state) 3230{ 3231 ssl->state = state; 3232} 3233 3234void SSL_set_verify_result(SSL *ssl, long arg) 3235{ 3236 ssl->verify_result = arg; 3237} 3238 3239long SSL_get_verify_result(const SSL *ssl) 3240{ 3241 return (ssl->verify_result); 3242} 3243 3244int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3245 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3246{ 3247 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3248 new_func, dup_func, free_func); 3249} 3250 3251int SSL_set_ex_data(SSL *s, int idx, void *arg) 3252{ 3253 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3254} 3255 3256void *SSL_get_ex_data(const SSL *s, int idx) 3257{ 3258 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3259} 3260 3261int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3262 CRYPTO_EX_dup *dup_func, 3263 CRYPTO_EX_free *free_func) 3264{ 3265 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3266 new_func, dup_func, free_func); 3267} 3268 3269int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3270{ 3271 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3272} 3273 3274void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3275{ 3276 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3277} 3278 3279int ssl_ok(SSL *s) 3280{ 3281 return (1); 3282} 3283 3284X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3285{ 3286 return (ctx->cert_store); 3287} 3288 3289void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3290{ 3291 if (ctx->cert_store != NULL) 3292 X509_STORE_free(ctx->cert_store); 3293 ctx->cert_store = store; 3294} 3295 3296int SSL_want(const SSL *s) 3297{ 3298 return (s->rwstate); 3299} 3300 3301/** 3302 * \brief Set the callback for generating temporary RSA keys. 3303 * \param ctx the SSL context. 3304 * \param cb the callback 3305 */ 3306 3307#ifndef OPENSSL_NO_RSA 3308void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3309 int is_export, 3310 int keylength)) 3311{ 3312 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3313} 3314 3315void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3316 int is_export, 3317 int keylength)) 3318{ 3319 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3320} 3321#endif 3322 3323#ifdef DOXYGEN 3324/** 3325 * \brief The RSA temporary key callback function. 3326 * \param ssl the SSL session. 3327 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3328 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3329 * of the required key in bits. 3330 * \return the temporary RSA key. 3331 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3332 */ 3333 3334RSA *cb(SSL *ssl, int is_export, int keylength) 3335{ 3336} 3337#endif 3338 3339/** 3340 * \brief Set the callback for generating temporary DH keys. 3341 * \param ctx the SSL context. 3342 * \param dh the callback 3343 */ 3344 3345#ifndef OPENSSL_NO_DH 3346void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3347 DH *(*dh) (SSL *ssl, int is_export, 3348 int keylength)) 3349{ 3350 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3351} 3352 3353void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3354 int keylength)) 3355{ 3356 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3357} 3358#endif 3359 3360#ifndef OPENSSL_NO_ECDH 3361void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3362 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3363 int keylength)) 3364{ 3365 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3366 (void (*)(void))ecdh); 3367} 3368 3369void SSL_set_tmp_ecdh_callback(SSL *ssl, 3370 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3371 int keylength)) 3372{ 3373 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3374} 3375#endif 3376 3377#ifndef OPENSSL_NO_PSK 3378int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3379{ 3380 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3381 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3382 SSL_R_DATA_LENGTH_TOO_LONG); 3383 return 0; 3384 } 3385 if (ctx->psk_identity_hint != NULL) 3386 OPENSSL_free(ctx->psk_identity_hint); 3387 if (identity_hint != NULL) { 3388 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3389 if (ctx->psk_identity_hint == NULL) 3390 return 0; 3391 } else 3392 ctx->psk_identity_hint = NULL; 3393 return 1; 3394} 3395 3396int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3397{ 3398 if (s == NULL) 3399 return 0; 3400 3401 if (s->session == NULL) 3402 return 1; /* session not created yet, ignored */ 3403 3404 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3405 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3406 return 0; 3407 } 3408 if (s->session->psk_identity_hint != NULL) 3409 OPENSSL_free(s->session->psk_identity_hint); 3410 if (identity_hint != NULL) { 3411 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3412 if (s->session->psk_identity_hint == NULL) 3413 return 0; 3414 } else 3415 s->session->psk_identity_hint = NULL; 3416 return 1; 3417} 3418 3419const char *SSL_get_psk_identity_hint(const SSL *s) 3420{ 3421 if (s == NULL || s->session == NULL) 3422 return NULL; 3423 return (s->session->psk_identity_hint); 3424} 3425 3426const char *SSL_get_psk_identity(const SSL *s) 3427{ 3428 if (s == NULL || s->session == NULL) 3429 return NULL; 3430 return (s->session->psk_identity); 3431} 3432 3433void SSL_set_psk_client_callback(SSL *s, 3434 unsigned int (*cb) (SSL *ssl, 3435 const char *hint, 3436 char *identity, 3437 unsigned int 3438 max_identity_len, 3439 unsigned char *psk, 3440 unsigned int 3441 max_psk_len)) 3442{ 3443 s->psk_client_callback = cb; 3444} 3445 3446void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3447 unsigned int (*cb) (SSL *ssl, 3448 const char *hint, 3449 char *identity, 3450 unsigned int 3451 max_identity_len, 3452 unsigned char *psk, 3453 unsigned int 3454 max_psk_len)) 3455{ 3456 ctx->psk_client_callback = cb; 3457} 3458 3459void SSL_set_psk_server_callback(SSL *s, 3460 unsigned int (*cb) (SSL *ssl, 3461 const char *identity, 3462 unsigned char *psk, 3463 unsigned int 3464 max_psk_len)) 3465{ 3466 s->psk_server_callback = cb; 3467} 3468 3469void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3470 unsigned int (*cb) (SSL *ssl, 3471 const char *identity, 3472 unsigned char *psk, 3473 unsigned int 3474 max_psk_len)) 3475{ 3476 ctx->psk_server_callback = cb; 3477} 3478#endif 3479 3480void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3481 void (*cb) (int write_p, int version, 3482 int content_type, const void *buf, 3483 size_t len, SSL *ssl, void *arg)) 3484{ 3485 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3486} 3487 3488void SSL_set_msg_callback(SSL *ssl, 3489 void (*cb) (int write_p, int version, 3490 int content_type, const void *buf, 3491 size_t len, SSL *ssl, void *arg)) 3492{ 3493 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3494} 3495 3496/* 3497 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3498 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3499 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3500 * allocated ctx; 3501 */ 3502 3503EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3504{ 3505 ssl_clear_hash_ctx(hash); 3506 *hash = EVP_MD_CTX_create(); 3507 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { 3508 EVP_MD_CTX_destroy(*hash); 3509 *hash = NULL; 3510 return NULL; 3511 } 3512 return *hash; 3513} 3514 3515void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3516{ 3517 3518 if (*hash) 3519 EVP_MD_CTX_destroy(*hash); 3520 *hash = NULL; 3521} 3522 3523void SSL_set_debug(SSL *s, int debug) 3524{ 3525 s->debug = debug; 3526} 3527 3528int SSL_cache_hit(SSL *s) 3529{ 3530 return s->hit; 3531} 3532 3533int SSL_is_server(SSL *s) 3534{ 3535 return s->server; 3536} 3537 3538#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3539# include "../crypto/bio/bss_file.c" 3540#endif 3541 3542IMPLEMENT_STACK_OF(SSL_CIPHER) 3543IMPLEMENT_STACK_OF(SSL_COMP) 3544IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3545