ssl_lib.c revision 1.7
1 /* 2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions. 3 */ 4 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh (at) 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 162 163 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 164 165 SSL3_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 }; 189 190 int 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 */ 266 int 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); 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 } 284 285 SSL *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_NEXTPROTONEG 368 s->next_proto_negotiated = NULL; 369 # endif 370 #endif 371 372 s->verify_result = X509_V_OK; 373 374 s->method = ctx->method; 375 376 if (!s->method->ssl_new(s)) 377 goto err; 378 379 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 380 381 SSL_clear(s); 382 383 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 384 385 #ifndef OPENSSL_NO_PSK 386 s->psk_client_callback = ctx->psk_client_callback; 387 s->psk_server_callback = ctx->psk_server_callback; 388 #endif 389 390 return (s); 391 err: 392 if (s != NULL) 393 SSL_free(s); 394 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE); 395 return (NULL); 396 } 397 398 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 399 unsigned int sid_ctx_len) 400 { 401 if (sid_ctx_len > sizeof ctx->sid_ctx) { 402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 403 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 404 return 0; 405 } 406 ctx->sid_ctx_length = sid_ctx_len; 407 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 408 409 return 1; 410 } 411 412 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 413 unsigned int sid_ctx_len) 414 { 415 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 417 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 418 return 0; 419 } 420 ssl->sid_ctx_length = sid_ctx_len; 421 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 422 423 return 1; 424 } 425 426 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 427 { 428 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 429 ctx->generate_session_id = cb; 430 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 431 return 1; 432 } 433 434 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 435 { 436 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 437 ssl->generate_session_id = cb; 438 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 439 return 1; 440 } 441 442 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 443 unsigned int id_len) 444 { 445 /* 446 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 447 * we can "construct" a session to give us the desired check - ie. to 448 * find if there's a session in the hash table that would conflict with 449 * any new session built out of this id/id_len and the ssl_version in use 450 * by this SSL. 451 */ 452 SSL_SESSION r, *p; 453 454 if (id_len > sizeof r.session_id) 455 return 0; 456 457 r.ssl_version = ssl->version; 458 r.session_id_length = id_len; 459 memcpy(r.session_id, id, id_len); 460 /* 461 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 462 * callback is calling us to check the uniqueness of a shorter ID, it 463 * must be compared as a padded-out ID because that is what it will be 464 * converted to when the callback has finished choosing it. 465 */ 466 if ((r.ssl_version == SSL2_VERSION) && 467 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) { 468 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len); 469 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 470 } 471 472 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 473 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 474 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 475 return (p != NULL); 476 } 477 478 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 479 { 480 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 481 } 482 483 int SSL_set_purpose(SSL *s, int purpose) 484 { 485 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 486 } 487 488 int SSL_CTX_set_trust(SSL_CTX *s, int trust) 489 { 490 return X509_VERIFY_PARAM_set_trust(s->param, trust); 491 } 492 493 int SSL_set_trust(SSL *s, int trust) 494 { 495 return X509_VERIFY_PARAM_set_trust(s->param, trust); 496 } 497 498 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 499 { 500 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 501 } 502 503 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 504 { 505 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 506 } 507 508 void SSL_free(SSL *s) 509 { 510 int i; 511 512 if (s == NULL) 513 return; 514 515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 516 #ifdef REF_PRINT 517 REF_PRINT("SSL", s); 518 #endif 519 if (i > 0) 520 return; 521 #ifdef REF_CHECK 522 if (i < 0) { 523 fprintf(stderr, "SSL_free, bad reference count\n"); 524 abort(); /* ok */ 525 } 526 #endif 527 528 if (s->param) 529 X509_VERIFY_PARAM_free(s->param); 530 531 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 532 533 if (s->bbio != NULL) { 534 /* If the buffering BIO is in place, pop it off */ 535 if (s->bbio == s->wbio) { 536 s->wbio = BIO_pop(s->wbio); 537 } 538 BIO_free(s->bbio); 539 s->bbio = NULL; 540 } 541 if (s->rbio != NULL) 542 BIO_free_all(s->rbio); 543 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 544 BIO_free_all(s->wbio); 545 546 if (s->init_buf != NULL) 547 BUF_MEM_free(s->init_buf); 548 549 /* add extra stuff */ 550 if (s->cipher_list != NULL) 551 sk_SSL_CIPHER_free(s->cipher_list); 552 if (s->cipher_list_by_id != NULL) 553 sk_SSL_CIPHER_free(s->cipher_list_by_id); 554 555 /* Make the next call work :-) */ 556 if (s->session != NULL) { 557 ssl_clear_bad_session(s); 558 SSL_SESSION_free(s->session); 559 } 560 561 ssl_clear_cipher_ctx(s); 562 ssl_clear_hash_ctx(&s->read_hash); 563 ssl_clear_hash_ctx(&s->write_hash); 564 565 if (s->cert != NULL) 566 ssl_cert_free(s->cert); 567 /* Free up if allocated */ 568 569 #ifndef OPENSSL_NO_TLSEXT 570 if (s->tlsext_hostname) 571 OPENSSL_free(s->tlsext_hostname); 572 if (s->initial_ctx) 573 SSL_CTX_free(s->initial_ctx); 574 # ifndef OPENSSL_NO_EC 575 if (s->tlsext_ecpointformatlist) 576 OPENSSL_free(s->tlsext_ecpointformatlist); 577 if (s->tlsext_ellipticcurvelist) 578 OPENSSL_free(s->tlsext_ellipticcurvelist); 579 # endif /* OPENSSL_NO_EC */ 580 if (s->tlsext_opaque_prf_input) 581 OPENSSL_free(s->tlsext_opaque_prf_input); 582 if (s->tlsext_ocsp_exts) 583 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free); 584 if (s->tlsext_ocsp_ids) 585 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 586 if (s->tlsext_ocsp_resp) 587 OPENSSL_free(s->tlsext_ocsp_resp); 588 #endif 589 590 if (s->client_CA != NULL) 591 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 592 593 if (s->method != NULL) 594 s->method->ssl_free(s); 595 596 if (s->ctx) 597 SSL_CTX_free(s->ctx); 598 599 #ifndef OPENSSL_NO_KRB5 600 if (s->kssl_ctx != NULL) 601 kssl_ctx_free(s->kssl_ctx); 602 #endif /* OPENSSL_NO_KRB5 */ 603 604 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 605 if (s->next_proto_negotiated) 606 OPENSSL_free(s->next_proto_negotiated); 607 #endif 608 609 #ifndef OPENSSL_NO_SRTP 610 if (s->srtp_profiles) 611 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 612 #endif 613 614 OPENSSL_free(s); 615 } 616 617 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 618 { 619 /* 620 * If the output buffering BIO is still in place, remove it 621 */ 622 if (s->bbio != NULL) { 623 if (s->wbio == s->bbio) { 624 s->wbio = s->wbio->next_bio; 625 s->bbio->next_bio = NULL; 626 } 627 } 628 if ((s->rbio != NULL) && (s->rbio != rbio)) 629 BIO_free_all(s->rbio); 630 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 631 BIO_free_all(s->wbio); 632 s->rbio = rbio; 633 s->wbio = wbio; 634 } 635 636 BIO *SSL_get_rbio(const SSL *s) 637 { 638 return (s->rbio); 639 } 640 641 BIO *SSL_get_wbio(const SSL *s) 642 { 643 return (s->wbio); 644 } 645 646 int SSL_get_fd(const SSL *s) 647 { 648 return (SSL_get_rfd(s)); 649 } 650 651 int SSL_get_rfd(const SSL *s) 652 { 653 int ret = -1; 654 BIO *b, *r; 655 656 b = SSL_get_rbio(s); 657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r, &ret); 660 return (ret); 661 } 662 663 int SSL_get_wfd(const SSL *s) 664 { 665 int ret = -1; 666 BIO *b, *r; 667 668 b = SSL_get_wbio(s); 669 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 670 if (r != NULL) 671 BIO_get_fd(r, &ret); 672 return (ret); 673 } 674 675 #ifndef OPENSSL_NO_SOCK 676 int SSL_set_fd(SSL *s, int fd) 677 { 678 int ret = 0; 679 BIO *bio = NULL; 680 681 bio = BIO_new(BIO_s_socket()); 682 683 if (bio == NULL) { 684 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB); 685 goto err; 686 } 687 BIO_set_fd(bio, fd, BIO_NOCLOSE); 688 SSL_set_bio(s, bio, bio); 689 ret = 1; 690 err: 691 return (ret); 692 } 693 694 int SSL_set_wfd(SSL *s, int fd) 695 { 696 int ret = 0; 697 BIO *bio = NULL; 698 699 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 700 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 701 bio = BIO_new(BIO_s_socket()); 702 703 if (bio == NULL) { 704 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB); 705 goto err; 706 } 707 BIO_set_fd(bio, fd, BIO_NOCLOSE); 708 SSL_set_bio(s, SSL_get_rbio(s), bio); 709 } else 710 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 711 ret = 1; 712 err: 713 return (ret); 714 } 715 716 int SSL_set_rfd(SSL *s, int fd) 717 { 718 int ret = 0; 719 BIO *bio = NULL; 720 721 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 722 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 723 bio = BIO_new(BIO_s_socket()); 724 725 if (bio == NULL) { 726 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB); 727 goto err; 728 } 729 BIO_set_fd(bio, fd, BIO_NOCLOSE); 730 SSL_set_bio(s, bio, SSL_get_wbio(s)); 731 } else 732 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 733 ret = 1; 734 err: 735 return (ret); 736 } 737 #endif 738 739 /* return length of latest Finished message we sent, copy to 'buf' */ 740 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 741 { 742 size_t ret = 0; 743 744 if (s->s3 != NULL) { 745 ret = s->s3->tmp.finish_md_len; 746 if (count > ret) 747 count = ret; 748 memcpy(buf, s->s3->tmp.finish_md, count); 749 } 750 return ret; 751 } 752 753 /* return length of latest Finished message we expected, copy to 'buf' */ 754 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 755 { 756 size_t ret = 0; 757 758 if (s->s3 != NULL) { 759 ret = s->s3->tmp.peer_finish_md_len; 760 if (count > ret) 761 count = ret; 762 memcpy(buf, s->s3->tmp.peer_finish_md, count); 763 } 764 return ret; 765 } 766 767 int SSL_get_verify_mode(const SSL *s) 768 { 769 return (s->verify_mode); 770 } 771 772 int SSL_get_verify_depth(const SSL *s) 773 { 774 return X509_VERIFY_PARAM_get_depth(s->param); 775 } 776 777 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) { 778 return (s->verify_callback); 779 } 780 781 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 782 { 783 return (ctx->verify_mode); 784 } 785 786 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 787 { 788 return X509_VERIFY_PARAM_get_depth(ctx->param); 789 } 790 791 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) { 792 return (ctx->default_verify_callback); 793 } 794 795 void SSL_set_verify(SSL *s, int mode, 796 int (*callback) (int ok, X509_STORE_CTX *ctx)) 797 { 798 s->verify_mode = mode; 799 if (callback != NULL) 800 s->verify_callback = callback; 801 } 802 803 void SSL_set_verify_depth(SSL *s, int depth) 804 { 805 X509_VERIFY_PARAM_set_depth(s->param, depth); 806 } 807 808 void SSL_set_read_ahead(SSL *s, int yes) 809 { 810 s->read_ahead = yes; 811 } 812 813 int SSL_get_read_ahead(const SSL *s) 814 { 815 return (s->read_ahead); 816 } 817 818 int SSL_pending(const SSL *s) 819 { 820 /* 821 * SSL_pending cannot work properly if read-ahead is enabled 822 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is 823 * impossible to fix since SSL_pending cannot report errors that may be 824 * observed while scanning the new data. (Note that SSL_pending() is 825 * often used as a boolean value, so we'd better not return -1.) 826 */ 827 return (s->method->ssl_pending(s)); 828 } 829 830 X509 *SSL_get_peer_certificate(const SSL *s) 831 { 832 X509 *r; 833 834 if ((s == NULL) || (s->session == NULL)) 835 r = NULL; 836 else 837 r = s->session->peer; 838 839 if (r == NULL) 840 return (r); 841 842 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 843 844 return (r); 845 } 846 847 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 848 { 849 STACK_OF(X509) *r; 850 851 if ((s == NULL) || (s->session == NULL) 852 || (s->session->sess_cert == NULL)) 853 r = NULL; 854 else 855 r = s->session->sess_cert->cert_chain; 856 857 /* 858 * If we are a client, cert_chain includes the peer's own certificate; if 859 * we are a server, it does not. 860 */ 861 862 return (r); 863 } 864 865 /* 866 * Now in theory, since the calling process own 't' it should be safe to 867 * modify. We need to be able to read f without being hassled 868 */ 869 void SSL_copy_session_id(SSL *t, const SSL *f) 870 { 871 CERT *tmp; 872 873 /* Do we need to to SSL locking? */ 874 SSL_set_session(t, SSL_get_session(f)); 875 876 /* 877 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa 878 */ 879 if (t->method != f->method) { 880 t->method->ssl_free(t); /* cleanup current */ 881 t->method = f->method; /* change method */ 882 t->method->ssl_new(t); /* setup new */ 883 } 884 885 tmp = t->cert; 886 if (f->cert != NULL) { 887 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 888 t->cert = f->cert; 889 } else 890 t->cert = NULL; 891 if (tmp != NULL) 892 ssl_cert_free(tmp); 893 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 894 } 895 896 /* Fix this so it checks all the valid key/cert options */ 897 int SSL_CTX_check_private_key(const SSL_CTX *ctx) 898 { 899 if ((ctx == NULL) || 900 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) { 901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 902 SSL_R_NO_CERTIFICATE_ASSIGNED); 903 return (0); 904 } 905 if (ctx->cert->key->privatekey == NULL) { 906 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 907 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 908 return (0); 909 } 910 return (X509_check_private_key 911 (ctx->cert->key->x509, ctx->cert->key->privatekey)); 912 } 913 914 /* Fix this function so that it takes an optional type parameter */ 915 int SSL_check_private_key(const SSL *ssl) 916 { 917 if (ssl == NULL) { 918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER); 919 return (0); 920 } 921 if (ssl->cert == NULL) { 922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 923 return 0; 924 } 925 if (ssl->cert->key->x509 == NULL) { 926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED); 927 return (0); 928 } 929 if (ssl->cert->key->privatekey == NULL) { 930 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 931 return (0); 932 } 933 return (X509_check_private_key(ssl->cert->key->x509, 934 ssl->cert->key->privatekey)); 935 } 936 937 int SSL_accept(SSL *s) 938 { 939 if (s->handshake_func == 0) 940 /* Not properly initialized yet */ 941 SSL_set_accept_state(s); 942 943 return (s->method->ssl_accept(s)); 944 } 945 946 int SSL_connect(SSL *s) 947 { 948 if (s->handshake_func == 0) 949 /* Not properly initialized yet */ 950 SSL_set_connect_state(s); 951 952 return (s->method->ssl_connect(s)); 953 } 954 955 long SSL_get_default_timeout(const SSL *s) 956 { 957 return (s->method->get_timeout()); 958 } 959 960 int SSL_read(SSL *s, void *buf, int num) 961 { 962 if (s->handshake_func == 0) { 963 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 964 return -1; 965 } 966 967 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 968 s->rwstate = SSL_NOTHING; 969 return (0); 970 } 971 return (s->method->ssl_read(s, buf, num)); 972 } 973 974 int SSL_peek(SSL *s, void *buf, int num) 975 { 976 if (s->handshake_func == 0) { 977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 978 return -1; 979 } 980 981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 982 return (0); 983 } 984 return (s->method->ssl_peek(s, buf, num)); 985 } 986 987 int SSL_write(SSL *s, const void *buf, int num) 988 { 989 if (s->handshake_func == 0) { 990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 991 return -1; 992 } 993 994 if (s->shutdown & SSL_SENT_SHUTDOWN) { 995 s->rwstate = SSL_NOTHING; 996 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN); 997 return (-1); 998 } 999 return (s->method->ssl_write(s, buf, num)); 1000 } 1001 1002 int SSL_shutdown(SSL *s) 1003 { 1004 /* 1005 * Note that this function behaves differently from what one might 1006 * expect. Return values are 0 for no success (yet), 1 for success; but 1007 * calling it once is usually not enough, even if blocking I/O is used 1008 * (see ssl3_shutdown). 1009 */ 1010 1011 if (s->handshake_func == 0) { 1012 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1013 return -1; 1014 } 1015 1016 if ((s != NULL) && !SSL_in_init(s)) 1017 return (s->method->ssl_shutdown(s)); 1018 else 1019 return (1); 1020 } 1021 1022 int SSL_renegotiate(SSL *s) 1023 { 1024 if (s->renegotiate == 0) 1025 s->renegotiate = 1; 1026 1027 s->new_session = 1; 1028 1029 return (s->method->ssl_renegotiate(s)); 1030 } 1031 1032 int SSL_renegotiate_abbreviated(SSL *s) 1033 { 1034 if (s->renegotiate == 0) 1035 s->renegotiate = 1; 1036 1037 s->new_session = 0; 1038 1039 return (s->method->ssl_renegotiate(s)); 1040 } 1041 1042 int SSL_renegotiate_pending(SSL *s) 1043 { 1044 /* 1045 * becomes true when negotiation is requested; false again once a 1046 * handshake has finished 1047 */ 1048 return (s->renegotiate != 0); 1049 } 1050 1051 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1052 { 1053 long l; 1054 1055 switch (cmd) { 1056 case SSL_CTRL_GET_READ_AHEAD: 1057 return (s->read_ahead); 1058 case SSL_CTRL_SET_READ_AHEAD: 1059 l = s->read_ahead; 1060 s->read_ahead = larg; 1061 return (l); 1062 1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1064 s->msg_callback_arg = parg; 1065 return 1; 1066 1067 case SSL_CTRL_OPTIONS: 1068 return (s->options |= larg); 1069 case SSL_CTRL_CLEAR_OPTIONS: 1070 return (s->options &= ~larg); 1071 case SSL_CTRL_MODE: 1072 return (s->mode |= larg); 1073 case SSL_CTRL_CLEAR_MODE: 1074 return (s->mode &= ~larg); 1075 case SSL_CTRL_GET_MAX_CERT_LIST: 1076 return (s->max_cert_list); 1077 case SSL_CTRL_SET_MAX_CERT_LIST: 1078 l = s->max_cert_list; 1079 s->max_cert_list = larg; 1080 return (l); 1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1083 return 0; 1084 s->max_send_fragment = larg; 1085 return 1; 1086 case SSL_CTRL_GET_RI_SUPPORT: 1087 if (s->s3) 1088 return s->s3->send_connection_binding; 1089 else 1090 return 0; 1091 default: 1092 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1093 } 1094 } 1095 1096 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) 1097 { 1098 switch (cmd) { 1099 case SSL_CTRL_SET_MSG_CALLBACK: 1100 s->msg_callback = (void (*) 1101 (int write_p, int version, int content_type, 1102 const void *buf, size_t len, SSL *ssl, 1103 void *arg))(fp); 1104 return 1; 1105 1106 default: 1107 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1108 } 1109 } 1110 1111 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1112 { 1113 return ctx->sessions; 1114 } 1115 1116 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1117 { 1118 long l; 1119 1120 switch (cmd) { 1121 case SSL_CTRL_GET_READ_AHEAD: 1122 return (ctx->read_ahead); 1123 case SSL_CTRL_SET_READ_AHEAD: 1124 l = ctx->read_ahead; 1125 ctx->read_ahead = larg; 1126 return (l); 1127 1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1129 ctx->msg_callback_arg = parg; 1130 return 1; 1131 1132 case SSL_CTRL_GET_MAX_CERT_LIST: 1133 return (ctx->max_cert_list); 1134 case SSL_CTRL_SET_MAX_CERT_LIST: 1135 l = ctx->max_cert_list; 1136 ctx->max_cert_list = larg; 1137 return (l); 1138 1139 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1140 l = ctx->session_cache_size; 1141 ctx->session_cache_size = larg; 1142 return (l); 1143 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1144 return (ctx->session_cache_size); 1145 case SSL_CTRL_SET_SESS_CACHE_MODE: 1146 l = ctx->session_cache_mode; 1147 ctx->session_cache_mode = larg; 1148 return (l); 1149 case SSL_CTRL_GET_SESS_CACHE_MODE: 1150 return (ctx->session_cache_mode); 1151 1152 case SSL_CTRL_SESS_NUMBER: 1153 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1154 case SSL_CTRL_SESS_CONNECT: 1155 return (ctx->stats.sess_connect); 1156 case SSL_CTRL_SESS_CONNECT_GOOD: 1157 return (ctx->stats.sess_connect_good); 1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1159 return (ctx->stats.sess_connect_renegotiate); 1160 case SSL_CTRL_SESS_ACCEPT: 1161 return (ctx->stats.sess_accept); 1162 case SSL_CTRL_SESS_ACCEPT_GOOD: 1163 return (ctx->stats.sess_accept_good); 1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1165 return (ctx->stats.sess_accept_renegotiate); 1166 case SSL_CTRL_SESS_HIT: 1167 return (ctx->stats.sess_hit); 1168 case SSL_CTRL_SESS_CB_HIT: 1169 return (ctx->stats.sess_cb_hit); 1170 case SSL_CTRL_SESS_MISSES: 1171 return (ctx->stats.sess_miss); 1172 case SSL_CTRL_SESS_TIMEOUTS: 1173 return (ctx->stats.sess_timeout); 1174 case SSL_CTRL_SESS_CACHE_FULL: 1175 return (ctx->stats.sess_cache_full); 1176 case SSL_CTRL_OPTIONS: 1177 return (ctx->options |= larg); 1178 case SSL_CTRL_CLEAR_OPTIONS: 1179 return (ctx->options &= ~larg); 1180 case SSL_CTRL_MODE: 1181 return (ctx->mode |= larg); 1182 case SSL_CTRL_CLEAR_MODE: 1183 return (ctx->mode &= ~larg); 1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1186 return 0; 1187 ctx->max_send_fragment = larg; 1188 return 1; 1189 default: 1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1191 } 1192 } 1193 1194 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) 1195 { 1196 switch (cmd) { 1197 case SSL_CTRL_SET_MSG_CALLBACK: 1198 ctx->msg_callback = (void (*) 1199 (int write_p, int version, int content_type, 1200 const void *buf, size_t len, SSL *ssl, 1201 void *arg))(fp); 1202 return 1; 1203 1204 default: 1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1206 } 1207 } 1208 1209 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1210 { 1211 long l; 1212 1213 l = a->id - b->id; 1214 if (l == 0L) 1215 return (0); 1216 else 1217 return ((l > 0) ? 1 : -1); 1218 } 1219 1220 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 1221 const SSL_CIPHER *const *bp) 1222 { 1223 long l; 1224 1225 l = (*ap)->id - (*bp)->id; 1226 if (l == 0L) 1227 return (0); 1228 else 1229 return ((l > 0) ? 1 : -1); 1230 } 1231 1232 /** return a STACK of the ciphers available for the SSL and in order of 1233 * preference */ 1234 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1235 { 1236 if (s != NULL) { 1237 if (s->cipher_list != NULL) { 1238 return (s->cipher_list); 1239 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1240 return (s->ctx->cipher_list); 1241 } 1242 } 1243 return (NULL); 1244 } 1245 1246 /** return a STACK of the ciphers available for the SSL and in order of 1247 * algorithm id */ 1248 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1249 { 1250 if (s != NULL) { 1251 if (s->cipher_list_by_id != NULL) { 1252 return (s->cipher_list_by_id); 1253 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { 1254 return (s->ctx->cipher_list_by_id); 1255 } 1256 } 1257 return (NULL); 1258 } 1259 1260 /** The old interface to get the same thing as SSL_get_ciphers() */ 1261 const char *SSL_get_cipher_list(const SSL *s, int n) 1262 { 1263 SSL_CIPHER *c; 1264 STACK_OF(SSL_CIPHER) *sk; 1265 1266 if (s == NULL) 1267 return (NULL); 1268 sk = SSL_get_ciphers(s); 1269 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1270 return (NULL); 1271 c = sk_SSL_CIPHER_value(sk, n); 1272 if (c == NULL) 1273 return (NULL); 1274 return (c->name); 1275 } 1276 1277 /** specify the ciphers to be used by default by the SSL_CTX */ 1278 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1279 { 1280 STACK_OF(SSL_CIPHER) *sk; 1281 1282 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1283 &ctx->cipher_list_by_id, str); 1284 /* 1285 * ssl_create_cipher_list may return an empty stack if it was unable to 1286 * find a cipher matching the given rule string (for example if the rule 1287 * string specifies a cipher which has been disabled). This is not an 1288 * error as far as ssl_create_cipher_list is concerned, and hence 1289 * ctx->cipher_list and ctx->cipher_list_by_id has been updated. 1290 */ 1291 if (sk == NULL) 1292 return 0; 1293 else if (sk_SSL_CIPHER_num(sk) == 0) { 1294 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1295 return 0; 1296 } 1297 return 1; 1298 } 1299 1300 /** specify the ciphers to be used by the SSL */ 1301 int SSL_set_cipher_list(SSL *s, const char *str) 1302 { 1303 STACK_OF(SSL_CIPHER) *sk; 1304 1305 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1306 &s->cipher_list_by_id, str); 1307 /* see comment in SSL_CTX_set_cipher_list */ 1308 if (sk == NULL) 1309 return 0; 1310 else if (sk_SSL_CIPHER_num(sk) == 0) { 1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1312 return 0; 1313 } 1314 return 1; 1315 } 1316 1317 /* works well for SSLv2, not so good for SSLv3 */ 1318 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1319 { 1320 char *p; 1321 STACK_OF(SSL_CIPHER) *sk; 1322 SSL_CIPHER *c; 1323 int i; 1324 1325 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) 1326 return (NULL); 1327 1328 p = buf; 1329 sk = s->session->ciphers; 1330 1331 if (sk_SSL_CIPHER_num(sk) == 0) 1332 return NULL; 1333 1334 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1335 int n; 1336 1337 c = sk_SSL_CIPHER_value(sk, i); 1338 n = strlen(c->name); 1339 if (n + 1 > len) { 1340 if (p != buf) 1341 --p; 1342 *p = '\0'; 1343 return buf; 1344 } 1345 strcpy(p, c->name); 1346 p += n; 1347 *(p++) = ':'; 1348 len -= n + 1; 1349 } 1350 p[-1] = '\0'; 1351 return (buf); 1352 } 1353 1354 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1355 unsigned char *p, 1356 int (*put_cb) (const SSL_CIPHER *, 1357 unsigned char *)) 1358 { 1359 int i, j = 0; 1360 SSL_CIPHER *c; 1361 unsigned char *q; 1362 #ifndef OPENSSL_NO_KRB5 1363 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1364 #endif /* OPENSSL_NO_KRB5 */ 1365 1366 if (sk == NULL) 1367 return (0); 1368 q = p; 1369 if (put_cb == NULL) 1370 put_cb = s->method->put_cipher_by_char; 1371 1372 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1373 c = sk_SSL_CIPHER_value(sk, i); 1374 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1375 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1376 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1377 continue; 1378 #ifndef OPENSSL_NO_KRB5 1379 if (((c->algorithm_mkey & SSL_kKRB5) 1380 || (c->algorithm_auth & SSL_aKRB5)) && nokrb5) 1381 continue; 1382 #endif /* OPENSSL_NO_KRB5 */ 1383 #ifndef OPENSSL_NO_PSK 1384 /* with PSK there must be client callback set */ 1385 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) 1386 && s->psk_client_callback == NULL) 1387 continue; 1388 #endif /* OPENSSL_NO_PSK */ 1389 #ifndef OPENSSL_NO_SRP 1390 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) 1391 && !(s->srp_ctx.srp_Mask & SSL_kSRP)) 1392 continue; 1393 #endif /* OPENSSL_NO_SRP */ 1394 j = put_cb(c, p); 1395 p += j; 1396 } 1397 /* 1398 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1399 * applicable SCSVs. 1400 */ 1401 if (p != q) { 1402 if (!s->renegotiate) { 1403 static SSL_CIPHER scsv = { 1404 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1405 }; 1406 j = put_cb(&scsv, p); 1407 p += j; 1408 #ifdef OPENSSL_RI_DEBUG 1409 fprintf(stderr, 1410 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1411 #endif 1412 } 1413 1414 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1415 static SSL_CIPHER scsv = { 1416 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1417 }; 1418 j = put_cb(&scsv, p); 1419 p += j; 1420 } 1421 } 1422 1423 return (p - q); 1424 } 1425 1426 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1427 int num, 1428 STACK_OF(SSL_CIPHER) **skp) 1429 { 1430 const SSL_CIPHER *c; 1431 STACK_OF(SSL_CIPHER) *sk; 1432 int i, n; 1433 1434 if (s->s3) 1435 s->s3->send_connection_binding = 0; 1436 1437 n = ssl_put_cipher_by_char(s, NULL, NULL); 1438 if (n == 0 || (num % n) != 0) { 1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1440 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1441 return (NULL); 1442 } 1443 if ((skp == NULL) || (*skp == NULL)) { 1444 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1445 if(sk == NULL) { 1446 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1447 return NULL; 1448 } 1449 } else { 1450 sk = *skp; 1451 sk_SSL_CIPHER_zero(sk); 1452 } 1453 1454 for (i = 0; i < num; i += n) { 1455 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1456 if (s->s3 && (n != 3 || !p[0]) && 1457 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1458 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1459 /* SCSV fatal if renegotiating */ 1460 if (s->renegotiate) { 1461 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1462 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1463 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1464 goto err; 1465 } 1466 s->s3->send_connection_binding = 1; 1467 p += n; 1468 #ifdef OPENSSL_RI_DEBUG 1469 fprintf(stderr, "SCSV received by server\n"); 1470 #endif 1471 continue; 1472 } 1473 1474 /* Check for TLS_FALLBACK_SCSV */ 1475 if ((n != 3 || !p[0]) && 1476 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1477 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1478 /* 1479 * The SCSV indicates that the client previously tried a higher 1480 * version. Fail if the current version is an unexpected 1481 * downgrade. 1482 */ 1483 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1484 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1485 SSL_R_INAPPROPRIATE_FALLBACK); 1486 if (s->s3) 1487 ssl3_send_alert(s, SSL3_AL_FATAL, 1488 SSL_AD_INAPPROPRIATE_FALLBACK); 1489 goto err; 1490 } 1491 p += n; 1492 continue; 1493 } 1494 1495 c = ssl_get_cipher_by_char(s, p); 1496 p += n; 1497 if (c != NULL) { 1498 if (!sk_SSL_CIPHER_push(sk, c)) { 1499 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1500 goto err; 1501 } 1502 } 1503 } 1504 1505 if (skp != NULL) 1506 *skp = sk; 1507 return (sk); 1508 err: 1509 if ((skp == NULL) || (*skp == NULL)) 1510 sk_SSL_CIPHER_free(sk); 1511 return (NULL); 1512 } 1513 1514 #ifndef OPENSSL_NO_TLSEXT 1515 /** return a servername extension value if provided in Client Hello, or NULL. 1516 * So far, only host_name types are defined (RFC 3546). 1517 */ 1518 1519 const char *SSL_get_servername(const SSL *s, const int type) 1520 { 1521 if (type != TLSEXT_NAMETYPE_host_name) 1522 return NULL; 1523 1524 return s->session && !s->tlsext_hostname ? 1525 s->session->tlsext_hostname : s->tlsext_hostname; 1526 } 1527 1528 int SSL_get_servername_type(const SSL *s) 1529 { 1530 if (s->session 1531 && (!s->tlsext_hostname ? s->session-> 1532 tlsext_hostname : s->tlsext_hostname)) 1533 return TLSEXT_NAMETYPE_host_name; 1534 return -1; 1535 } 1536 1537 # ifndef OPENSSL_NO_NEXTPROTONEG 1538 /* 1539 * SSL_select_next_proto implements the standard protocol selection. It is 1540 * expected that this function is called from the callback set by 1541 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1542 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1543 * not included in the length. A byte string of length 0 is invalid. No byte 1544 * string may be truncated. The current, but experimental algorithm for 1545 * selecting the protocol is: 1) If the server doesn't support NPN then this 1546 * is indicated to the callback. In this case, the client application has to 1547 * abort the connection or have a default application level protocol. 2) If 1548 * the server supports NPN, but advertises an empty list then the client 1549 * selects the first protcol in its list, but indicates via the API that this 1550 * fallback case was enacted. 3) Otherwise, the client finds the first 1551 * protocol in the server's list that it supports and selects this protocol. 1552 * This is because it's assumed that the server has better information about 1553 * which protocol a client should use. 4) If the client doesn't support any 1554 * of the server's advertised protocols, then this is treated the same as 1555 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1556 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1557 */ 1558 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1559 const unsigned char *server, 1560 unsigned int server_len, 1561 const unsigned char *client, 1562 unsigned int client_len) 1563 { 1564 unsigned int i, j; 1565 const unsigned char *result; 1566 int status = OPENSSL_NPN_UNSUPPORTED; 1567 1568 /* 1569 * For each protocol in server preference order, see if we support it. 1570 */ 1571 for (i = 0; i < server_len;) { 1572 for (j = 0; j < client_len;) { 1573 if (server[i] == client[j] && 1574 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1575 /* We found a match */ 1576 result = &server[i]; 1577 status = OPENSSL_NPN_NEGOTIATED; 1578 goto found; 1579 } 1580 j += client[j]; 1581 j++; 1582 } 1583 i += server[i]; 1584 i++; 1585 } 1586 1587 /* There's no overlap between our protocols and the server's list. */ 1588 result = client; 1589 status = OPENSSL_NPN_NO_OVERLAP; 1590 1591 found: 1592 *out = (unsigned char *)result + 1; 1593 *outlen = result[0]; 1594 return status; 1595 } 1596 1597 /* 1598 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1599 * client's requested protocol for this connection and returns 0. If the 1600 * client didn't request any protocol, then *data is set to NULL. Note that 1601 * the client can request any protocol it chooses. The value returned from 1602 * this function need not be a member of the list of supported protocols 1603 * provided by the callback. 1604 */ 1605 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1606 unsigned *len) 1607 { 1608 *data = s->next_proto_negotiated; 1609 if (!*data) { 1610 *len = 0; 1611 } else { 1612 *len = s->next_proto_negotiated_len; 1613 } 1614 } 1615 1616 /* 1617 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1618 * a TLS server needs a list of supported protocols for Next Protocol 1619 * Negotiation. The returned list must be in wire format. The list is 1620 * returned by setting |out| to point to it and |outlen| to its length. This 1621 * memory will not be modified, but one should assume that the SSL* keeps a 1622 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1623 * wishes to advertise. Otherwise, no such extension will be included in the 1624 * ServerHello. 1625 */ 1626 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1627 int (*cb) (SSL *ssl, 1628 const unsigned char 1629 **out, 1630 unsigned int *outlen, 1631 void *arg), void *arg) 1632 { 1633 ctx->next_protos_advertised_cb = cb; 1634 ctx->next_protos_advertised_cb_arg = arg; 1635 } 1636 1637 /* 1638 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1639 * client needs to select a protocol from the server's provided list. |out| 1640 * must be set to point to the selected protocol (which may be within |in|). 1641 * The length of the protocol name must be written into |outlen|. The 1642 * server's advertised protocols are provided in |in| and |inlen|. The 1643 * callback can assume that |in| is syntactically valid. The client must 1644 * select a protocol. It is fatal to the connection if this callback returns 1645 * a value other than SSL_TLSEXT_ERR_OK. 1646 */ 1647 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1648 int (*cb) (SSL *s, unsigned char **out, 1649 unsigned char *outlen, 1650 const unsigned char *in, 1651 unsigned int inlen, 1652 void *arg), void *arg) 1653 { 1654 ctx->next_proto_select_cb = cb; 1655 ctx->next_proto_select_cb_arg = arg; 1656 } 1657 # endif 1658 #endif 1659 1660 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1661 const char *label, size_t llen, 1662 const unsigned char *p, size_t plen, 1663 int use_context) 1664 { 1665 if (s->version < TLS1_VERSION) 1666 return -1; 1667 1668 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1669 llen, p, plen, 1670 use_context); 1671 } 1672 1673 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1674 { 1675 unsigned long l; 1676 1677 l = (unsigned long) 1678 ((unsigned int)a->session_id[0]) | 1679 ((unsigned int)a->session_id[1] << 8L) | 1680 ((unsigned long)a->session_id[2] << 16L) | 1681 ((unsigned long)a->session_id[3] << 24L); 1682 return (l); 1683 } 1684 1685 /* 1686 * NB: If this function (or indeed the hash function which uses a sort of 1687 * coarser function than this one) is changed, ensure 1688 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1689 * being able to construct an SSL_SESSION that will collide with any existing 1690 * session with a matching session ID. 1691 */ 1692 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1693 { 1694 if (a->ssl_version != b->ssl_version) 1695 return (1); 1696 if (a->session_id_length != b->session_id_length) 1697 return (1); 1698 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1699 } 1700 1701 /* 1702 * These wrapper functions should remain rather than redeclaring 1703 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1704 * variable. The reason is that the functions aren't static, they're exposed 1705 * via ssl.h. 1706 */ 1707 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1708 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1709 1710 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1711 { 1712 SSL_CTX *ret = NULL; 1713 1714 if (meth == NULL) { 1715 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1716 return (NULL); 1717 } 1718 #ifdef OPENSSL_FIPS 1719 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1720 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1721 return NULL; 1722 } 1723 #endif 1724 1725 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1726 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1727 goto err; 1728 } 1729 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1730 if (ret == NULL) 1731 goto err; 1732 1733 memset(ret, 0, sizeof(SSL_CTX)); 1734 1735 ret->method = meth; 1736 1737 ret->cert_store = NULL; 1738 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1739 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1740 ret->session_cache_head = NULL; 1741 ret->session_cache_tail = NULL; 1742 1743 /* We take the system default */ 1744 ret->session_timeout = meth->get_timeout(); 1745 1746 ret->new_session_cb = 0; 1747 ret->remove_session_cb = 0; 1748 ret->get_session_cb = 0; 1749 ret->generate_session_id = 0; 1750 1751 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1752 1753 ret->references = 1; 1754 ret->quiet_shutdown = 0; 1755 1756 /* ret->cipher=NULL;*/ 1757 /*- 1758 ret->s2->challenge=NULL; 1759 ret->master_key=NULL; 1760 ret->key_arg=NULL; 1761 ret->s2->conn_id=NULL; */ 1762 1763 ret->info_callback = NULL; 1764 1765 ret->app_verify_callback = 0; 1766 ret->app_verify_arg = NULL; 1767 1768 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1769 ret->read_ahead = 0; 1770 ret->msg_callback = 0; 1771 ret->msg_callback_arg = NULL; 1772 ret->verify_mode = SSL_VERIFY_NONE; 1773 #if 0 1774 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1775 #endif 1776 ret->sid_ctx_length = 0; 1777 ret->default_verify_callback = NULL; 1778 if ((ret->cert = ssl_cert_new()) == NULL) 1779 goto err; 1780 1781 ret->default_passwd_callback = 0; 1782 ret->default_passwd_callback_userdata = NULL; 1783 ret->client_cert_cb = 0; 1784 ret->app_gen_cookie_cb = 0; 1785 ret->app_verify_cookie_cb = 0; 1786 1787 ret->sessions = lh_SSL_SESSION_new(); 1788 if (ret->sessions == NULL) 1789 goto err; 1790 ret->cert_store = X509_STORE_new(); 1791 if (ret->cert_store == NULL) 1792 goto err; 1793 1794 ssl_create_cipher_list(ret->method, 1795 &ret->cipher_list, &ret->cipher_list_by_id, 1796 meth->version == 1797 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1798 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1799 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1800 goto err2; 1801 } 1802 1803 ret->param = X509_VERIFY_PARAM_new(); 1804 if (!ret->param) 1805 goto err; 1806 1807 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1808 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1809 goto err2; 1810 } 1811 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1812 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1813 goto err2; 1814 } 1815 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1816 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1817 goto err2; 1818 } 1819 1820 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1821 goto err; 1822 1823 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1824 1825 ret->extra_certs = NULL; 1826 /* No compression for DTLS */ 1827 if (meth->version != DTLS1_VERSION) 1828 ret->comp_methods = SSL_COMP_get_compression_methods(); 1829 1830 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1831 1832 #ifndef OPENSSL_NO_TLSEXT 1833 ret->tlsext_servername_callback = 0; 1834 ret->tlsext_servername_arg = NULL; 1835 /* Setup RFC4507 ticket keys */ 1836 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1837 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1838 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1839 ret->options |= SSL_OP_NO_TICKET; 1840 1841 ret->tlsext_status_cb = 0; 1842 ret->tlsext_status_arg = NULL; 1843 1844 # ifndef OPENSSL_NO_NEXTPROTONEG 1845 ret->next_protos_advertised_cb = 0; 1846 ret->next_proto_select_cb = 0; 1847 # endif 1848 #endif 1849 #ifndef OPENSSL_NO_PSK 1850 ret->psk_identity_hint = NULL; 1851 ret->psk_client_callback = NULL; 1852 ret->psk_server_callback = NULL; 1853 #endif 1854 #ifndef OPENSSL_NO_SRP 1855 SSL_CTX_SRP_CTX_init(ret); 1856 #endif 1857 #ifndef OPENSSL_NO_BUF_FREELISTS 1858 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1859 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1860 if (!ret->rbuf_freelist) 1861 goto err; 1862 ret->rbuf_freelist->chunklen = 0; 1863 ret->rbuf_freelist->len = 0; 1864 ret->rbuf_freelist->head = NULL; 1865 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1866 if (!ret->wbuf_freelist) { 1867 OPENSSL_free(ret->rbuf_freelist); 1868 goto err; 1869 } 1870 ret->wbuf_freelist->chunklen = 0; 1871 ret->wbuf_freelist->len = 0; 1872 ret->wbuf_freelist->head = NULL; 1873 #endif 1874 #ifndef OPENSSL_NO_ENGINE 1875 ret->client_cert_engine = NULL; 1876 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1877 # define eng_strx(x) #x 1878 # define eng_str(x) eng_strx(x) 1879 /* Use specific client engine automatically... ignore errors */ 1880 { 1881 ENGINE *eng; 1882 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1883 if (!eng) { 1884 ERR_clear_error(); 1885 ENGINE_load_builtin_engines(); 1886 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1887 } 1888 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1889 ERR_clear_error(); 1890 } 1891 # endif 1892 #endif 1893 /* 1894 * Default is to connect to non-RI servers. When RI is more widely 1895 * deployed might change this. 1896 */ 1897 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1898 1899 /* 1900 * Disable SSLv2 by default, callers that want to enable SSLv2 will have to 1901 * explicitly clear this option via either of SSL_CTX_clear_options() or 1902 * SSL_clear_options(). 1903 */ 1904 ret->options |= SSL_OP_NO_SSLv2; 1905 1906 return (ret); 1907 err: 1908 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 1909 err2: 1910 if (ret != NULL) 1911 SSL_CTX_free(ret); 1912 return (NULL); 1913 } 1914 1915 #if 0 1916 static void SSL_COMP_free(SSL_COMP *comp) 1917 { 1918 OPENSSL_free(comp); 1919 } 1920 #endif 1921 1922 #ifndef OPENSSL_NO_BUF_FREELISTS 1923 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1924 { 1925 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1926 for (ent = list->head; ent; ent = next) { 1927 next = ent->next; 1928 OPENSSL_free(ent); 1929 } 1930 OPENSSL_free(list); 1931 } 1932 #endif 1933 1934 void SSL_CTX_free(SSL_CTX *a) 1935 { 1936 int i; 1937 1938 if (a == NULL) 1939 return; 1940 1941 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1942 #ifdef REF_PRINT 1943 REF_PRINT("SSL_CTX", a); 1944 #endif 1945 if (i > 0) 1946 return; 1947 #ifdef REF_CHECK 1948 if (i < 0) { 1949 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 1950 abort(); /* ok */ 1951 } 1952 #endif 1953 1954 if (a->param) 1955 X509_VERIFY_PARAM_free(a->param); 1956 1957 /* 1958 * Free internal session cache. However: the remove_cb() may reference 1959 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1960 * after the sessions were flushed. 1961 * As the ex_data handling routines might also touch the session cache, 1962 * the most secure solution seems to be: empty (flush) the cache, then 1963 * free ex_data, then finally free the cache. 1964 * (See ticket [openssl.org #212].) 1965 */ 1966 if (a->sessions != NULL) 1967 SSL_CTX_flush_sessions(a, 0); 1968 1969 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1970 1971 if (a->sessions != NULL) 1972 lh_SSL_SESSION_free(a->sessions); 1973 1974 if (a->cert_store != NULL) 1975 X509_STORE_free(a->cert_store); 1976 if (a->cipher_list != NULL) 1977 sk_SSL_CIPHER_free(a->cipher_list); 1978 if (a->cipher_list_by_id != NULL) 1979 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1980 if (a->cert != NULL) 1981 ssl_cert_free(a->cert); 1982 if (a->client_CA != NULL) 1983 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1984 if (a->extra_certs != NULL) 1985 sk_X509_pop_free(a->extra_certs, X509_free); 1986 #if 0 /* This should never be done, since it 1987 * removes a global database */ 1988 if (a->comp_methods != NULL) 1989 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1990 #else 1991 a->comp_methods = NULL; 1992 #endif 1993 1994 #ifndef OPENSSL_NO_SRTP 1995 if (a->srtp_profiles) 1996 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1997 #endif 1998 1999 #ifndef OPENSSL_NO_PSK 2000 if (a->psk_identity_hint) 2001 OPENSSL_free(a->psk_identity_hint); 2002 #endif 2003 #ifndef OPENSSL_NO_SRP 2004 SSL_CTX_SRP_CTX_free(a); 2005 #endif 2006 #ifndef OPENSSL_NO_ENGINE 2007 if (a->client_cert_engine) 2008 ENGINE_finish(a->client_cert_engine); 2009 #endif 2010 2011 #ifndef OPENSSL_NO_BUF_FREELISTS 2012 if (a->wbuf_freelist) 2013 ssl_buf_freelist_free(a->wbuf_freelist); 2014 if (a->rbuf_freelist) 2015 ssl_buf_freelist_free(a->rbuf_freelist); 2016 #endif 2017 2018 OPENSSL_free(a); 2019 } 2020 2021 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2022 { 2023 ctx->default_passwd_callback = cb; 2024 } 2025 2026 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2027 { 2028 ctx->default_passwd_callback_userdata = u; 2029 } 2030 2031 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2032 int (*cb) (X509_STORE_CTX *, void *), 2033 void *arg) 2034 { 2035 ctx->app_verify_callback = cb; 2036 ctx->app_verify_arg = arg; 2037 } 2038 2039 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2040 int (*cb) (int, X509_STORE_CTX *)) 2041 { 2042 ctx->verify_mode = mode; 2043 ctx->default_verify_callback = cb; 2044 } 2045 2046 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2047 { 2048 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2049 } 2050 2051 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2052 { 2053 CERT_PKEY *cpk; 2054 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2055 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2056 int rsa_tmp_export, dh_tmp_export, kl; 2057 unsigned long mask_k, mask_a, emask_k, emask_a; 2058 #ifndef OPENSSL_NO_ECDSA 2059 int have_ecc_cert, ecdsa_ok, ecc_pkey_size; 2060 #endif 2061 #ifndef OPENSSL_NO_ECDH 2062 int have_ecdh_tmp, ecdh_ok; 2063 #endif 2064 #ifndef OPENSSL_NO_EC 2065 X509 *x = NULL; 2066 EVP_PKEY *ecc_pkey = NULL; 2067 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2068 #endif 2069 if (c == NULL) 2070 return; 2071 2072 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2073 2074 #ifndef OPENSSL_NO_RSA 2075 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2076 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2077 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2078 #else 2079 rsa_tmp = rsa_tmp_export = 0; 2080 #endif 2081 #ifndef OPENSSL_NO_DH 2082 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2083 dh_tmp_export = (c->dh_tmp_cb != NULL || 2084 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2085 #else 2086 dh_tmp = dh_tmp_export = 0; 2087 #endif 2088 2089 #ifndef OPENSSL_NO_ECDH 2090 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2091 #endif 2092 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2093 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2094 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2095 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2096 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2097 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2098 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2099 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2100 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2101 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2102 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2103 /* FIX THIS EAY EAY EAY */ 2104 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2105 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2106 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2107 #ifndef OPENSSL_NO_EC 2108 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2109 #endif 2110 mask_k = 0; 2111 mask_a = 0; 2112 emask_k = 0; 2113 emask_a = 0; 2114 2115 #ifdef CIPHER_DEBUG 2116 fprintf(stderr, 2117 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2118 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2119 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2120 #endif 2121 2122 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2123 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2124 mask_k |= SSL_kGOST; 2125 mask_a |= SSL_aGOST01; 2126 } 2127 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2128 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2129 mask_k |= SSL_kGOST; 2130 mask_a |= SSL_aGOST94; 2131 } 2132 2133 if (rsa_enc || (rsa_tmp && rsa_sign)) 2134 mask_k |= SSL_kRSA; 2135 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2136 emask_k |= SSL_kRSA; 2137 2138 #if 0 2139 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2140 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2141 mask_k |= SSL_kEDH; 2142 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2143 (rsa_enc || rsa_sign || dsa_sign)) 2144 emask_k |= SSL_kEDH; 2145 #endif 2146 2147 if (dh_tmp_export) 2148 emask_k |= SSL_kEDH; 2149 2150 if (dh_tmp) 2151 mask_k |= SSL_kEDH; 2152 2153 if (dh_rsa) 2154 mask_k |= SSL_kDHr; 2155 if (dh_rsa_export) 2156 emask_k |= SSL_kDHr; 2157 2158 if (dh_dsa) 2159 mask_k |= SSL_kDHd; 2160 if (dh_dsa_export) 2161 emask_k |= SSL_kDHd; 2162 2163 if (rsa_enc || rsa_sign) { 2164 mask_a |= SSL_aRSA; 2165 emask_a |= SSL_aRSA; 2166 } 2167 2168 if (dsa_sign) { 2169 mask_a |= SSL_aDSS; 2170 emask_a |= SSL_aDSS; 2171 } 2172 2173 mask_a |= SSL_aNULL; 2174 emask_a |= SSL_aNULL; 2175 2176 #ifndef OPENSSL_NO_KRB5 2177 mask_k |= SSL_kKRB5; 2178 mask_a |= SSL_aKRB5; 2179 emask_k |= SSL_kKRB5; 2180 emask_a |= SSL_aKRB5; 2181 #endif 2182 2183 /* 2184 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2185 * depending on the key usage extension. 2186 */ 2187 #ifndef OPENSSL_NO_EC 2188 if (have_ecc_cert) { 2189 /* This call populates extension flags (ex_flags) */ 2190 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2191 X509_check_purpose(x, -1, 0); 2192 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2193 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2194 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2195 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2196 ecc_pkey = X509_get_pubkey(x); 2197 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2198 EVP_PKEY_free(ecc_pkey); 2199 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2200 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2201 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2202 } 2203 #ifndef OPENSSL_NO_ECDH 2204 if (ecdh_ok) { 2205 2206 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2207 mask_k |= SSL_kECDHr; 2208 mask_a |= SSL_aECDH; 2209 if (ecc_pkey_size <= 163) { 2210 emask_k |= SSL_kECDHr; 2211 emask_a |= SSL_aECDH; 2212 } 2213 } 2214 2215 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2216 mask_k |= SSL_kECDHe; 2217 mask_a |= SSL_aECDH; 2218 if (ecc_pkey_size <= 163) { 2219 emask_k |= SSL_kECDHe; 2220 emask_a |= SSL_aECDH; 2221 } 2222 } 2223 } 2224 #endif 2225 #ifndef OPENSSL_NO_ECDSA 2226 if (ecdsa_ok) { 2227 mask_a |= SSL_aECDSA; 2228 emask_a |= SSL_aECDSA; 2229 } 2230 #endif 2231 } 2232 #endif 2233 #ifndef OPENSSL_NO_ECDH 2234 if (have_ecdh_tmp) { 2235 mask_k |= SSL_kEECDH; 2236 emask_k |= SSL_kEECDH; 2237 } 2238 #endif 2239 2240 #ifndef OPENSSL_NO_PSK 2241 mask_k |= SSL_kPSK; 2242 mask_a |= SSL_aPSK; 2243 emask_k |= SSL_kPSK; 2244 emask_a |= SSL_aPSK; 2245 #endif 2246 2247 c->mask_k = mask_k; 2248 c->mask_a = mask_a; 2249 c->export_mask_k = emask_k; 2250 c->export_mask_a = emask_a; 2251 c->valid = 1; 2252 } 2253 2254 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2255 #define ku_reject(x, usage) \ 2256 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2257 2258 #ifndef OPENSSL_NO_EC 2259 2260 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2261 { 2262 unsigned long alg_k, alg_a; 2263 EVP_PKEY *pkey = NULL; 2264 int keysize = 0; 2265 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2266 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2267 2268 alg_k = cs->algorithm_mkey; 2269 alg_a = cs->algorithm_auth; 2270 2271 if (SSL_C_IS_EXPORT(cs)) { 2272 /* ECDH key length in export ciphers must be <= 163 bits */ 2273 pkey = X509_get_pubkey(x); 2274 if (pkey == NULL) 2275 return 0; 2276 keysize = EVP_PKEY_bits(pkey); 2277 EVP_PKEY_free(pkey); 2278 if (keysize > 163) 2279 return 0; 2280 } 2281 2282 /* This call populates the ex_flags field correctly */ 2283 X509_check_purpose(x, -1, 0); 2284 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2285 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2286 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2287 } 2288 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2289 /* key usage, if present, must allow key agreement */ 2290 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2291 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2292 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2293 return 0; 2294 } 2295 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2296 /* signature alg must be ECDSA */ 2297 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2298 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2299 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2300 return 0; 2301 } 2302 } 2303 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2304 /* signature alg must be RSA */ 2305 2306 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2307 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2308 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2309 return 0; 2310 } 2311 } 2312 } 2313 if (alg_a & SSL_aECDSA) { 2314 /* key usage, if present, must allow signing */ 2315 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2316 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2317 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2318 return 0; 2319 } 2320 } 2321 2322 return 1; /* all checks are ok */ 2323 } 2324 2325 #endif 2326 2327 /* THIS NEEDS CLEANING UP */ 2328 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2329 { 2330 unsigned long alg_k, alg_a; 2331 CERT *c; 2332 int i; 2333 2334 c = s->cert; 2335 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2336 2337 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2338 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2339 2340 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) { 2341 /* 2342 * we don't need to look at SSL_kEECDH since no certificate is needed 2343 * for anon ECDH and for authenticated EECDH, the check for the auth 2344 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC 2345 * not an RSA cert but for EECDH-RSA we need an RSA cert. Placing the 2346 * checks for SSL_kECDH before RSA checks ensures the correct cert is 2347 * chosen. 2348 */ 2349 i = SSL_PKEY_ECC; 2350 } else if (alg_a & SSL_aECDSA) { 2351 i = SSL_PKEY_ECC; 2352 } else if (alg_k & SSL_kDHr) 2353 i = SSL_PKEY_DH_RSA; 2354 else if (alg_k & SSL_kDHd) 2355 i = SSL_PKEY_DH_DSA; 2356 else if (alg_a & SSL_aDSS) 2357 i = SSL_PKEY_DSA_SIGN; 2358 else if (alg_a & SSL_aRSA) { 2359 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2360 i = SSL_PKEY_RSA_SIGN; 2361 else 2362 i = SSL_PKEY_RSA_ENC; 2363 } else if (alg_a & SSL_aKRB5) { 2364 /* VRS something else here? */ 2365 return (NULL); 2366 } else if (alg_a & SSL_aGOST94) 2367 i = SSL_PKEY_GOST94; 2368 else if (alg_a & SSL_aGOST01) 2369 i = SSL_PKEY_GOST01; 2370 else { /* if (alg_a & SSL_aNULL) */ 2371 2372 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2373 return (NULL); 2374 } 2375 2376 return c->pkeys + i; 2377 } 2378 2379 X509 *ssl_get_server_send_cert(const SSL *s) 2380 { 2381 CERT_PKEY *cpk; 2382 cpk = ssl_get_server_send_pkey(s); 2383 if (!cpk) 2384 return NULL; 2385 return cpk->x509; 2386 } 2387 2388 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2389 const EVP_MD **pmd) 2390 { 2391 unsigned long alg_a; 2392 CERT *c; 2393 int idx = -1; 2394 2395 alg_a = cipher->algorithm_auth; 2396 c = s->cert; 2397 2398 if ((alg_a & SSL_aDSS) && 2399 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2400 idx = SSL_PKEY_DSA_SIGN; 2401 else if (alg_a & SSL_aRSA) { 2402 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2403 idx = SSL_PKEY_RSA_SIGN; 2404 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2405 idx = SSL_PKEY_RSA_ENC; 2406 } else if ((alg_a & SSL_aECDSA) && 2407 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2408 idx = SSL_PKEY_ECC; 2409 if (idx == -1) { 2410 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2411 return (NULL); 2412 } 2413 if (pmd) 2414 *pmd = c->pkeys[idx].digest; 2415 return c->pkeys[idx].privatekey; 2416 } 2417 2418 void ssl_update_cache(SSL *s, int mode) 2419 { 2420 int i; 2421 2422 /* 2423 * If the session_id_length is 0, we are not supposed to cache it, and it 2424 * would be rather hard to do anyway :-) 2425 */ 2426 if (s->session->session_id_length == 0) 2427 return; 2428 2429 i = s->session_ctx->session_cache_mode; 2430 if ((i & mode) && (!s->hit) 2431 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2432 || SSL_CTX_add_session(s->session_ctx, s->session)) 2433 && (s->session_ctx->new_session_cb != NULL)) { 2434 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2435 if (!s->session_ctx->new_session_cb(s, s->session)) 2436 SSL_SESSION_free(s->session); 2437 } 2438 2439 /* auto flush every 255 connections */ 2440 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2441 if ((((mode & SSL_SESS_CACHE_CLIENT) 2442 ? s->session_ctx->stats.sess_connect_good 2443 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2444 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2445 } 2446 } 2447 } 2448 2449 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2450 { 2451 return (s->method); 2452 } 2453 2454 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2455 { 2456 int conn = -1; 2457 int ret = 1; 2458 2459 if (s->method != meth) { 2460 if (s->handshake_func != NULL) 2461 conn = (s->handshake_func == s->method->ssl_connect); 2462 2463 if (s->method->version == meth->version) 2464 s->method = meth; 2465 else { 2466 s->method->ssl_free(s); 2467 s->method = meth; 2468 ret = s->method->ssl_new(s); 2469 } 2470 2471 if (conn == 1) 2472 s->handshake_func = meth->ssl_connect; 2473 else if (conn == 0) 2474 s->handshake_func = meth->ssl_accept; 2475 } 2476 return (ret); 2477 } 2478 2479 int SSL_get_error(const SSL *s, int i) 2480 { 2481 int reason; 2482 unsigned long l; 2483 BIO *bio; 2484 2485 if (i > 0) 2486 return (SSL_ERROR_NONE); 2487 2488 /* 2489 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2490 * where we do encode the error 2491 */ 2492 if ((l = ERR_peek_error()) != 0) { 2493 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2494 return (SSL_ERROR_SYSCALL); 2495 else 2496 return (SSL_ERROR_SSL); 2497 } 2498 2499 if ((i < 0) && SSL_want_read(s)) { 2500 bio = SSL_get_rbio(s); 2501 if (BIO_should_read(bio)) 2502 return (SSL_ERROR_WANT_READ); 2503 else if (BIO_should_write(bio)) 2504 /* 2505 * This one doesn't make too much sense ... We never try to write 2506 * to the rbio, and an application program where rbio and wbio 2507 * are separate couldn't even know what it should wait for. 2508 * However if we ever set s->rwstate incorrectly (so that we have 2509 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2510 * wbio *are* the same, this test works around that bug; so it 2511 * might be safer to keep it. 2512 */ 2513 return (SSL_ERROR_WANT_WRITE); 2514 else if (BIO_should_io_special(bio)) { 2515 reason = BIO_get_retry_reason(bio); 2516 if (reason == BIO_RR_CONNECT) 2517 return (SSL_ERROR_WANT_CONNECT); 2518 else if (reason == BIO_RR_ACCEPT) 2519 return (SSL_ERROR_WANT_ACCEPT); 2520 else 2521 return (SSL_ERROR_SYSCALL); /* unknown */ 2522 } 2523 } 2524 2525 if ((i < 0) && SSL_want_write(s)) { 2526 bio = SSL_get_wbio(s); 2527 if (BIO_should_write(bio)) 2528 return (SSL_ERROR_WANT_WRITE); 2529 else if (BIO_should_read(bio)) 2530 /* 2531 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2532 */ 2533 return (SSL_ERROR_WANT_READ); 2534 else if (BIO_should_io_special(bio)) { 2535 reason = BIO_get_retry_reason(bio); 2536 if (reason == BIO_RR_CONNECT) 2537 return (SSL_ERROR_WANT_CONNECT); 2538 else if (reason == BIO_RR_ACCEPT) 2539 return (SSL_ERROR_WANT_ACCEPT); 2540 else 2541 return (SSL_ERROR_SYSCALL); 2542 } 2543 } 2544 if ((i < 0) && SSL_want_x509_lookup(s)) { 2545 return (SSL_ERROR_WANT_X509_LOOKUP); 2546 } 2547 2548 if (i == 0) { 2549 if (s->version == SSL2_VERSION) { 2550 /* assume it is the socket being closed */ 2551 return (SSL_ERROR_ZERO_RETURN); 2552 } else { 2553 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2554 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2555 return (SSL_ERROR_ZERO_RETURN); 2556 } 2557 } 2558 return (SSL_ERROR_SYSCALL); 2559 } 2560 2561 int SSL_do_handshake(SSL *s) 2562 { 2563 int ret = 1; 2564 2565 if (s->handshake_func == NULL) { 2566 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2567 return (-1); 2568 } 2569 2570 s->method->ssl_renegotiate_check(s); 2571 2572 if (SSL_in_init(s) || SSL_in_before(s)) { 2573 ret = s->handshake_func(s); 2574 } 2575 return (ret); 2576 } 2577 2578 /* 2579 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2580 * calls will reset it 2581 */ 2582 void SSL_set_accept_state(SSL *s) 2583 { 2584 s->server = 1; 2585 s->shutdown = 0; 2586 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2587 s->handshake_func = s->method->ssl_accept; 2588 /* clear the current cipher */ 2589 ssl_clear_cipher_ctx(s); 2590 ssl_clear_hash_ctx(&s->read_hash); 2591 ssl_clear_hash_ctx(&s->write_hash); 2592 } 2593 2594 void SSL_set_connect_state(SSL *s) 2595 { 2596 s->server = 0; 2597 s->shutdown = 0; 2598 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2599 s->handshake_func = s->method->ssl_connect; 2600 /* clear the current cipher */ 2601 ssl_clear_cipher_ctx(s); 2602 ssl_clear_hash_ctx(&s->read_hash); 2603 ssl_clear_hash_ctx(&s->write_hash); 2604 } 2605 2606 int ssl_undefined_function(SSL *s) 2607 { 2608 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2609 return (0); 2610 } 2611 2612 int ssl_undefined_void_function(void) 2613 { 2614 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2615 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2616 return (0); 2617 } 2618 2619 int ssl_undefined_const_function(const SSL *s) 2620 { 2621 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2622 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2623 return (0); 2624 } 2625 2626 SSL_METHOD *ssl_bad_method(int ver) 2627 { 2628 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2629 return (NULL); 2630 } 2631 2632 const char *SSL_get_version(const SSL *s) 2633 { 2634 if (s->version == TLS1_2_VERSION) 2635 return ("TLSv1.2"); 2636 else if (s->version == TLS1_1_VERSION) 2637 return ("TLSv1.1"); 2638 else if (s->version == TLS1_VERSION) 2639 return ("TLSv1"); 2640 else if (s->version == SSL3_VERSION) 2641 return ("SSLv3"); 2642 else if (s->version == SSL2_VERSION) 2643 return ("SSLv2"); 2644 else 2645 return ("unknown"); 2646 } 2647 2648 SSL *SSL_dup(SSL *s) 2649 { 2650 STACK_OF(X509_NAME) *sk; 2651 X509_NAME *xn; 2652 SSL *ret; 2653 int i; 2654 2655 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2656 return (NULL); 2657 2658 ret->version = s->version; 2659 ret->type = s->type; 2660 ret->method = s->method; 2661 2662 if (s->session != NULL) { 2663 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2664 SSL_copy_session_id(ret, s); 2665 } else { 2666 /* 2667 * No session has been established yet, so we have to expect that 2668 * s->cert or ret->cert will be changed later -- they should not both 2669 * point to the same object, and thus we can't use 2670 * SSL_copy_session_id. 2671 */ 2672 2673 ret->method->ssl_free(ret); 2674 ret->method = s->method; 2675 ret->method->ssl_new(ret); 2676 2677 if (s->cert != NULL) { 2678 if (ret->cert != NULL) { 2679 ssl_cert_free(ret->cert); 2680 } 2681 ret->cert = ssl_cert_dup(s->cert); 2682 if (ret->cert == NULL) 2683 goto err; 2684 } 2685 2686 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2687 } 2688 2689 ret->options = s->options; 2690 ret->mode = s->mode; 2691 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2692 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2693 ret->msg_callback = s->msg_callback; 2694 ret->msg_callback_arg = s->msg_callback_arg; 2695 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2696 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2697 ret->generate_session_id = s->generate_session_id; 2698 2699 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2700 2701 ret->debug = s->debug; 2702 2703 /* copy app data, a little dangerous perhaps */ 2704 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2705 goto err; 2706 2707 /* setup rbio, and wbio */ 2708 if (s->rbio != NULL) { 2709 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2710 goto err; 2711 } 2712 if (s->wbio != NULL) { 2713 if (s->wbio != s->rbio) { 2714 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2715 goto err; 2716 } else 2717 ret->wbio = ret->rbio; 2718 } 2719 ret->rwstate = s->rwstate; 2720 ret->in_handshake = s->in_handshake; 2721 ret->handshake_func = s->handshake_func; 2722 ret->server = s->server; 2723 ret->renegotiate = s->renegotiate; 2724 ret->new_session = s->new_session; 2725 ret->quiet_shutdown = s->quiet_shutdown; 2726 ret->shutdown = s->shutdown; 2727 ret->state = s->state; /* SSL_dup does not really work at any state, 2728 * though */ 2729 ret->rstate = s->rstate; 2730 ret->init_num = 0; /* would have to copy ret->init_buf, 2731 * ret->init_msg, ret->init_num, 2732 * ret->init_off */ 2733 ret->hit = s->hit; 2734 2735 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2736 2737 /* dup the cipher_list and cipher_list_by_id stacks */ 2738 if (s->cipher_list != NULL) { 2739 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2740 goto err; 2741 } 2742 if (s->cipher_list_by_id != NULL) 2743 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2744 == NULL) 2745 goto err; 2746 2747 /* Dup the client_CA list */ 2748 if (s->client_CA != NULL) { 2749 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2750 goto err; 2751 ret->client_CA = sk; 2752 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2753 xn = sk_X509_NAME_value(sk, i); 2754 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2755 X509_NAME_free(xn); 2756 goto err; 2757 } 2758 } 2759 } 2760 2761 if (0) { 2762 err: 2763 if (ret != NULL) 2764 SSL_free(ret); 2765 ret = NULL; 2766 } 2767 return (ret); 2768 } 2769 2770 void ssl_clear_cipher_ctx(SSL *s) 2771 { 2772 if (s->enc_read_ctx != NULL) { 2773 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2774 OPENSSL_free(s->enc_read_ctx); 2775 s->enc_read_ctx = NULL; 2776 } 2777 if (s->enc_write_ctx != NULL) { 2778 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2779 OPENSSL_free(s->enc_write_ctx); 2780 s->enc_write_ctx = NULL; 2781 } 2782 #ifndef OPENSSL_NO_COMP 2783 if (s->expand != NULL) { 2784 COMP_CTX_free(s->expand); 2785 s->expand = NULL; 2786 } 2787 if (s->compress != NULL) { 2788 COMP_CTX_free(s->compress); 2789 s->compress = NULL; 2790 } 2791 #endif 2792 } 2793 2794 /* Fix this function so that it takes an optional type parameter */ 2795 X509 *SSL_get_certificate(const SSL *s) 2796 { 2797 if (s->cert != NULL) 2798 return (s->cert->key->x509); 2799 else 2800 return (NULL); 2801 } 2802 2803 /* Fix this function so that it takes an optional type parameter */ 2804 EVP_PKEY *SSL_get_privatekey(SSL *s) 2805 { 2806 if (s->cert != NULL) 2807 return (s->cert->key->privatekey); 2808 else 2809 return (NULL); 2810 } 2811 2812 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2813 { 2814 if ((s->session != NULL) && (s->session->cipher != NULL)) 2815 return (s->session->cipher); 2816 return (NULL); 2817 } 2818 2819 #ifdef OPENSSL_NO_COMP 2820 const void *SSL_get_current_compression(SSL *s) 2821 { 2822 return NULL; 2823 } 2824 2825 const void *SSL_get_current_expansion(SSL *s) 2826 { 2827 return NULL; 2828 } 2829 #else 2830 2831 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2832 { 2833 if (s->compress != NULL) 2834 return (s->compress->meth); 2835 return (NULL); 2836 } 2837 2838 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2839 { 2840 if (s->expand != NULL) 2841 return (s->expand->meth); 2842 return (NULL); 2843 } 2844 #endif 2845 2846 int ssl_init_wbio_buffer(SSL *s, int push) 2847 { 2848 BIO *bbio; 2849 2850 if (s->bbio == NULL) { 2851 bbio = BIO_new(BIO_f_buffer()); 2852 if (bbio == NULL) 2853 return (0); 2854 s->bbio = bbio; 2855 } else { 2856 bbio = s->bbio; 2857 if (s->bbio == s->wbio) 2858 s->wbio = BIO_pop(s->wbio); 2859 } 2860 (void)BIO_reset(bbio); 2861 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2862 if (!BIO_set_read_buffer_size(bbio, 1)) { 2863 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 2864 return (0); 2865 } 2866 if (push) { 2867 if (s->wbio != bbio) 2868 s->wbio = BIO_push(bbio, s->wbio); 2869 } else { 2870 if (s->wbio == bbio) 2871 s->wbio = BIO_pop(bbio); 2872 } 2873 return (1); 2874 } 2875 2876 void ssl_free_wbio_buffer(SSL *s) 2877 { 2878 if (s->bbio == NULL) 2879 return; 2880 2881 if (s->bbio == s->wbio) { 2882 /* remove buffering */ 2883 s->wbio = BIO_pop(s->wbio); 2884 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 2885 * adding one more preprocessor symbol */ 2886 assert(s->wbio != NULL); 2887 #endif 2888 } 2889 BIO_free(s->bbio); 2890 s->bbio = NULL; 2891 } 2892 2893 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2894 { 2895 ctx->quiet_shutdown = mode; 2896 } 2897 2898 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2899 { 2900 return (ctx->quiet_shutdown); 2901 } 2902 2903 void SSL_set_quiet_shutdown(SSL *s, int mode) 2904 { 2905 s->quiet_shutdown = mode; 2906 } 2907 2908 int SSL_get_quiet_shutdown(const SSL *s) 2909 { 2910 return (s->quiet_shutdown); 2911 } 2912 2913 void SSL_set_shutdown(SSL *s, int mode) 2914 { 2915 s->shutdown = mode; 2916 } 2917 2918 int SSL_get_shutdown(const SSL *s) 2919 { 2920 return (s->shutdown); 2921 } 2922 2923 int SSL_version(const SSL *s) 2924 { 2925 return (s->version); 2926 } 2927 2928 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2929 { 2930 return (ssl->ctx); 2931 } 2932 2933 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 2934 { 2935 CERT *ocert = ssl->cert; 2936 if (ssl->ctx == ctx) 2937 return ssl->ctx; 2938 #ifndef OPENSSL_NO_TLSEXT 2939 if (ctx == NULL) 2940 ctx = ssl->initial_ctx; 2941 #endif 2942 ssl->cert = ssl_cert_dup(ctx->cert); 2943 if (ocert != NULL) { 2944 int i; 2945 /* Copy negotiated digests from original */ 2946 for (i = 0; i < SSL_PKEY_NUM; i++) { 2947 CERT_PKEY *cpk = ocert->pkeys + i; 2948 CERT_PKEY *rpk = ssl->cert->pkeys + i; 2949 rpk->digest = cpk->digest; 2950 } 2951 ssl_cert_free(ocert); 2952 } 2953 2954 /* 2955 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 2956 * so setter APIs must prevent invalid lengths from entering the system. 2957 */ 2958 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 2959 2960 /* 2961 * If the session ID context matches that of the parent SSL_CTX, 2962 * inherit it from the new SSL_CTX as well. If however the context does 2963 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 2964 * leave it unchanged. 2965 */ 2966 if ((ssl->ctx != NULL) && 2967 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 2968 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 2969 ssl->sid_ctx_length = ctx->sid_ctx_length; 2970 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 2971 } 2972 2973 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2974 if (ssl->ctx != NULL) 2975 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2976 ssl->ctx = ctx; 2977 2978 return (ssl->ctx); 2979 } 2980 2981 #ifndef OPENSSL_NO_STDIO 2982 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2983 { 2984 return (X509_STORE_set_default_paths(ctx->cert_store)); 2985 } 2986 2987 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2988 const char *CApath) 2989 { 2990 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2991 } 2992 #endif 2993 2994 void SSL_set_info_callback(SSL *ssl, 2995 void (*cb) (const SSL *ssl, int type, int val)) 2996 { 2997 ssl->info_callback = cb; 2998 } 2999 3000 /* 3001 * One compiler (Diab DCC) doesn't like argument names in returned function 3002 * pointer. 3003 */ 3004 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 3005 int /* type */ , 3006 int /* val */ ) { 3007 return ssl->info_callback; 3008 } 3009 3010 int SSL_state(const SSL *ssl) 3011 { 3012 return (ssl->state); 3013 } 3014 3015 void SSL_set_state(SSL *ssl, int state) 3016 { 3017 ssl->state = state; 3018 } 3019 3020 void SSL_set_verify_result(SSL *ssl, long arg) 3021 { 3022 ssl->verify_result = arg; 3023 } 3024 3025 long SSL_get_verify_result(const SSL *ssl) 3026 { 3027 return (ssl->verify_result); 3028 } 3029 3030 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3031 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3032 { 3033 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3034 new_func, dup_func, free_func); 3035 } 3036 3037 int SSL_set_ex_data(SSL *s, int idx, void *arg) 3038 { 3039 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3040 } 3041 3042 void *SSL_get_ex_data(const SSL *s, int idx) 3043 { 3044 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3045 } 3046 3047 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3048 CRYPTO_EX_dup *dup_func, 3049 CRYPTO_EX_free *free_func) 3050 { 3051 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3052 new_func, dup_func, free_func); 3053 } 3054 3055 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3056 { 3057 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3058 } 3059 3060 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3061 { 3062 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3063 } 3064 3065 int ssl_ok(SSL *s) 3066 { 3067 return (1); 3068 } 3069 3070 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3071 { 3072 return (ctx->cert_store); 3073 } 3074 3075 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3076 { 3077 if (ctx->cert_store != NULL) 3078 X509_STORE_free(ctx->cert_store); 3079 ctx->cert_store = store; 3080 } 3081 3082 int SSL_want(const SSL *s) 3083 { 3084 return (s->rwstate); 3085 } 3086 3087 /** 3088 * \brief Set the callback for generating temporary RSA keys. 3089 * \param ctx the SSL context. 3090 * \param cb the callback 3091 */ 3092 3093 #ifndef OPENSSL_NO_RSA 3094 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3095 int is_export, 3096 int keylength)) 3097 { 3098 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3099 } 3100 3101 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3102 int is_export, 3103 int keylength)) 3104 { 3105 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3106 } 3107 #endif 3108 3109 #ifdef DOXYGEN 3110 /** 3111 * \brief The RSA temporary key callback function. 3112 * \param ssl the SSL session. 3113 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3114 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3115 * of the required key in bits. 3116 * \return the temporary RSA key. 3117 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3118 */ 3119 3120 RSA *cb(SSL *ssl, int is_export, int keylength) 3121 { 3122 } 3123 #endif 3124 3125 /** 3126 * \brief Set the callback for generating temporary DH keys. 3127 * \param ctx the SSL context. 3128 * \param dh the callback 3129 */ 3130 3131 #ifndef OPENSSL_NO_DH 3132 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3133 DH *(*dh) (SSL *ssl, int is_export, 3134 int keylength)) 3135 { 3136 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3137 } 3138 3139 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3140 int keylength)) 3141 { 3142 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3143 } 3144 #endif 3145 3146 #ifndef OPENSSL_NO_ECDH 3147 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3148 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3149 int keylength)) 3150 { 3151 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3152 (void (*)(void))ecdh); 3153 } 3154 3155 void SSL_set_tmp_ecdh_callback(SSL *ssl, 3156 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3157 int keylength)) 3158 { 3159 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3160 } 3161 #endif 3162 3163 #ifndef OPENSSL_NO_PSK 3164 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3165 { 3166 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3167 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3168 SSL_R_DATA_LENGTH_TOO_LONG); 3169 return 0; 3170 } 3171 if (ctx->psk_identity_hint != NULL) 3172 OPENSSL_free(ctx->psk_identity_hint); 3173 if (identity_hint != NULL) { 3174 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3175 if (ctx->psk_identity_hint == NULL) 3176 return 0; 3177 } else 3178 ctx->psk_identity_hint = NULL; 3179 return 1; 3180 } 3181 3182 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3183 { 3184 if (s == NULL) 3185 return 0; 3186 3187 if (s->session == NULL) 3188 return 1; /* session not created yet, ignored */ 3189 3190 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3191 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3192 return 0; 3193 } 3194 if (s->session->psk_identity_hint != NULL) 3195 OPENSSL_free(s->session->psk_identity_hint); 3196 if (identity_hint != NULL) { 3197 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3198 if (s->session->psk_identity_hint == NULL) 3199 return 0; 3200 } else 3201 s->session->psk_identity_hint = NULL; 3202 return 1; 3203 } 3204 3205 const char *SSL_get_psk_identity_hint(const SSL *s) 3206 { 3207 if (s == NULL || s->session == NULL) 3208 return NULL; 3209 return (s->session->psk_identity_hint); 3210 } 3211 3212 const char *SSL_get_psk_identity(const SSL *s) 3213 { 3214 if (s == NULL || s->session == NULL) 3215 return NULL; 3216 return (s->session->psk_identity); 3217 } 3218 3219 void SSL_set_psk_client_callback(SSL *s, 3220 unsigned int (*cb) (SSL *ssl, 3221 const char *hint, 3222 char *identity, 3223 unsigned int 3224 max_identity_len, 3225 unsigned char *psk, 3226 unsigned int 3227 max_psk_len)) 3228 { 3229 s->psk_client_callback = cb; 3230 } 3231 3232 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3233 unsigned int (*cb) (SSL *ssl, 3234 const char *hint, 3235 char *identity, 3236 unsigned int 3237 max_identity_len, 3238 unsigned char *psk, 3239 unsigned int 3240 max_psk_len)) 3241 { 3242 ctx->psk_client_callback = cb; 3243 } 3244 3245 void SSL_set_psk_server_callback(SSL *s, 3246 unsigned int (*cb) (SSL *ssl, 3247 const char *identity, 3248 unsigned char *psk, 3249 unsigned int 3250 max_psk_len)) 3251 { 3252 s->psk_server_callback = cb; 3253 } 3254 3255 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3256 unsigned int (*cb) (SSL *ssl, 3257 const char *identity, 3258 unsigned char *psk, 3259 unsigned int 3260 max_psk_len)) 3261 { 3262 ctx->psk_server_callback = cb; 3263 } 3264 #endif 3265 3266 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3267 void (*cb) (int write_p, int version, 3268 int content_type, const void *buf, 3269 size_t len, SSL *ssl, void *arg)) 3270 { 3271 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3272 } 3273 3274 void SSL_set_msg_callback(SSL *ssl, 3275 void (*cb) (int write_p, int version, 3276 int content_type, const void *buf, 3277 size_t len, SSL *ssl, void *arg)) 3278 { 3279 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3280 } 3281 3282 /* 3283 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3284 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3285 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3286 * allocated ctx; 3287 */ 3288 3289 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3290 { 3291 ssl_clear_hash_ctx(hash); 3292 *hash = EVP_MD_CTX_create(); 3293 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) { 3294 EVP_MD_CTX_destroy(*hash); 3295 *hash = NULL; 3296 return NULL; 3297 } 3298 return *hash; 3299 } 3300 3301 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3302 { 3303 3304 if (*hash) 3305 EVP_MD_CTX_destroy(*hash); 3306 *hash = NULL; 3307 } 3308 3309 void SSL_set_debug(SSL *s, int debug) 3310 { 3311 s->debug = debug; 3312 } 3313 3314 int SSL_cache_hit(SSL *s) 3315 { 3316 return s->hit; 3317 } 3318 3319 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3320 # include "../crypto/bio/bss_file.c" 3321 #endif 3322 3323 IMPLEMENT_STACK_OF(SSL_CIPHER) 3324 IMPLEMENT_STACK_OF(SSL_COMP) 3325 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3326
Indexes created Mon Mar 02 05:31:46 UTC 2026