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