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; 310 311 if (ctx->cert != NULL) { 312 /* 313 * Earlier library versions used to copy the pointer to the CERT, not 314 * its contents; only when setting new parameters for the per-SSL 315 * copy, ssl_cert_new would be called (and the direct reference to 316 * the per-SSL_CTX settings would be lost, but those still were 317 * indirectly accessed for various purposes, and for that reason they 318 * used to be known as s->ctx->default_cert). Now we don't look at the 319 * SSL_CTX's CERT after having duplicated it once. 320 */ 321 322 s->cert = ssl_cert_dup(ctx->cert); 323 if (s->cert == NULL) 324 goto err; 325 } else 326 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */ 327 328 s->read_ahead = ctx->read_ahead; 329 s->msg_callback = ctx->msg_callback; 330 s->msg_callback_arg = ctx->msg_callback_arg; 331 s->verify_mode = ctx->verify_mode; 332 #if 0 333 s->verify_depth = ctx->verify_depth; 334 #endif 335 s->sid_ctx_length = ctx->sid_ctx_length; 336 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 337 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 338 s->verify_callback = ctx->default_verify_callback; 339 s->generate_session_id = ctx->generate_session_id; 340 341 s->param = X509_VERIFY_PARAM_new(); 342 if (!s->param) 343 goto err; 344 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 345 #if 0 346 s->purpose = ctx->purpose; 347 s->trust = ctx->trust; 348 #endif 349 s->quiet_shutdown = ctx->quiet_shutdown; 350 s->max_send_fragment = ctx->max_send_fragment; 351 352 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 353 s->ctx = ctx; 354 #ifndef OPENSSL_NO_TLSEXT 355 s->tlsext_debug_cb = 0; 356 s->tlsext_debug_arg = NULL; 357 s->tlsext_ticket_expected = 0; 358 s->tlsext_status_type = -1; 359 s->tlsext_status_expected = 0; 360 s->tlsext_ocsp_ids = NULL; 361 s->tlsext_ocsp_exts = NULL; 362 s->tlsext_ocsp_resp = NULL; 363 s->tlsext_ocsp_resplen = -1; 364 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 365 s->initial_ctx = ctx; 366 # ifndef OPENSSL_NO_EC 367 if (ctx->tlsext_ecpointformatlist) { 368 s->tlsext_ecpointformatlist = 369 BUF_memdup(ctx->tlsext_ecpointformatlist, 370 ctx->tlsext_ecpointformatlist_length); 371 if (!s->tlsext_ecpointformatlist) 372 goto err; 373 s->tlsext_ecpointformatlist_length = 374 ctx->tlsext_ecpointformatlist_length; 375 } 376 if (ctx->tlsext_ellipticcurvelist) { 377 s->tlsext_ellipticcurvelist = 378 BUF_memdup(ctx->tlsext_ellipticcurvelist, 379 ctx->tlsext_ellipticcurvelist_length); 380 if (!s->tlsext_ellipticcurvelist) 381 goto err; 382 s->tlsext_ellipticcurvelist_length = 383 ctx->tlsext_ellipticcurvelist_length; 384 } 385 # endif 386 # ifndef OPENSSL_NO_NEXTPROTONEG 387 s->next_proto_negotiated = NULL; 388 # endif 389 390 if (s->ctx->alpn_client_proto_list) { 391 s->alpn_client_proto_list = 392 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len); 393 if (s->alpn_client_proto_list == NULL) 394 goto err; 395 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list, 396 s->ctx->alpn_client_proto_list_len); 397 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len; 398 } 399 #endif 400 401 s->verify_result = X509_V_OK; 402 403 s->method = ctx->method; 404 405 if (!s->method->ssl_new(s)) 406 goto err; 407 408 s->references = 1; 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 ((s != NULL) && !SSL_in_init(s)) 1064 return (s->method->ssl_shutdown(s)); 1065 else 1066 return (1); 1067 } 1068 1069 int SSL_renegotiate(SSL *s) 1070 { 1071 if (s->renegotiate == 0) 1072 s->renegotiate = 1; 1073 1074 s->new_session = 1; 1075 1076 return (s->method->ssl_renegotiate(s)); 1077 } 1078 1079 int SSL_renegotiate_abbreviated(SSL *s) 1080 { 1081 if (s->renegotiate == 0) 1082 s->renegotiate = 1; 1083 1084 s->new_session = 0; 1085 1086 return (s->method->ssl_renegotiate(s)); 1087 } 1088 1089 int SSL_renegotiate_pending(SSL *s) 1090 { 1091 /* 1092 * becomes true when negotiation is requested; false again once a 1093 * handshake has finished 1094 */ 1095 return (s->renegotiate != 0); 1096 } 1097 1098 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1099 { 1100 long l; 1101 1102 switch (cmd) { 1103 case SSL_CTRL_GET_READ_AHEAD: 1104 return (s->read_ahead); 1105 case SSL_CTRL_SET_READ_AHEAD: 1106 l = s->read_ahead; 1107 s->read_ahead = larg; 1108 return (l); 1109 1110 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1111 s->msg_callback_arg = parg; 1112 return 1; 1113 1114 case SSL_CTRL_OPTIONS: 1115 return (s->options |= larg); 1116 case SSL_CTRL_CLEAR_OPTIONS: 1117 return (s->options &= ~larg); 1118 case SSL_CTRL_MODE: 1119 return (s->mode |= larg); 1120 case SSL_CTRL_CLEAR_MODE: 1121 return (s->mode &= ~larg); 1122 case SSL_CTRL_GET_MAX_CERT_LIST: 1123 return (s->max_cert_list); 1124 case SSL_CTRL_SET_MAX_CERT_LIST: 1125 l = s->max_cert_list; 1126 s->max_cert_list = larg; 1127 return (l); 1128 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1129 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1130 return 0; 1131 s->max_send_fragment = larg; 1132 return 1; 1133 case SSL_CTRL_GET_RI_SUPPORT: 1134 if (s->s3) 1135 return s->s3->send_connection_binding; 1136 else 1137 return 0; 1138 case SSL_CTRL_CERT_FLAGS: 1139 return (s->cert->cert_flags |= larg); 1140 case SSL_CTRL_CLEAR_CERT_FLAGS: 1141 return (s->cert->cert_flags &= ~larg); 1142 1143 case SSL_CTRL_GET_RAW_CIPHERLIST: 1144 if (parg) { 1145 if (s->cert->ciphers_raw == NULL) 1146 return 0; 1147 *(unsigned char **)parg = s->cert->ciphers_raw; 1148 return (int)s->cert->ciphers_rawlen; 1149 } else 1150 return ssl_put_cipher_by_char(s, NULL, NULL); 1151 default: 1152 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1153 } 1154 } 1155 1156 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) 1157 { 1158 switch (cmd) { 1159 case SSL_CTRL_SET_MSG_CALLBACK: 1160 s->msg_callback = (void (*) 1161 (int write_p, int version, int content_type, 1162 const void *buf, size_t len, SSL *ssl, 1163 void *arg))(fp); 1164 return 1; 1165 1166 default: 1167 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1168 } 1169 } 1170 1171 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1172 { 1173 return ctx->sessions; 1174 } 1175 1176 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1177 { 1178 long l; 1179 /* For some cases with ctx == NULL perform syntax checks */ 1180 if (ctx == NULL) { 1181 switch (cmd) { 1182 #ifndef OPENSSL_NO_EC 1183 case SSL_CTRL_SET_CURVES_LIST: 1184 return tls1_set_curves_list(NULL, NULL, parg); 1185 #endif 1186 case SSL_CTRL_SET_SIGALGS_LIST: 1187 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST: 1188 return tls1_set_sigalgs_list(NULL, parg, 0); 1189 default: 1190 return 0; 1191 } 1192 } 1193 1194 switch (cmd) { 1195 case SSL_CTRL_GET_READ_AHEAD: 1196 return (ctx->read_ahead); 1197 case SSL_CTRL_SET_READ_AHEAD: 1198 l = ctx->read_ahead; 1199 ctx->read_ahead = larg; 1200 return (l); 1201 1202 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1203 ctx->msg_callback_arg = parg; 1204 return 1; 1205 1206 case SSL_CTRL_GET_MAX_CERT_LIST: 1207 return (ctx->max_cert_list); 1208 case SSL_CTRL_SET_MAX_CERT_LIST: 1209 l = ctx->max_cert_list; 1210 ctx->max_cert_list = larg; 1211 return (l); 1212 1213 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1214 l = ctx->session_cache_size; 1215 ctx->session_cache_size = larg; 1216 return (l); 1217 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1218 return (ctx->session_cache_size); 1219 case SSL_CTRL_SET_SESS_CACHE_MODE: 1220 l = ctx->session_cache_mode; 1221 ctx->session_cache_mode = larg; 1222 return (l); 1223 case SSL_CTRL_GET_SESS_CACHE_MODE: 1224 return (ctx->session_cache_mode); 1225 1226 case SSL_CTRL_SESS_NUMBER: 1227 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1228 case SSL_CTRL_SESS_CONNECT: 1229 return (ctx->stats.sess_connect); 1230 case SSL_CTRL_SESS_CONNECT_GOOD: 1231 return (ctx->stats.sess_connect_good); 1232 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1233 return (ctx->stats.sess_connect_renegotiate); 1234 case SSL_CTRL_SESS_ACCEPT: 1235 return (ctx->stats.sess_accept); 1236 case SSL_CTRL_SESS_ACCEPT_GOOD: 1237 return (ctx->stats.sess_accept_good); 1238 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1239 return (ctx->stats.sess_accept_renegotiate); 1240 case SSL_CTRL_SESS_HIT: 1241 return (ctx->stats.sess_hit); 1242 case SSL_CTRL_SESS_CB_HIT: 1243 return (ctx->stats.sess_cb_hit); 1244 case SSL_CTRL_SESS_MISSES: 1245 return (ctx->stats.sess_miss); 1246 case SSL_CTRL_SESS_TIMEOUTS: 1247 return (ctx->stats.sess_timeout); 1248 case SSL_CTRL_SESS_CACHE_FULL: 1249 return (ctx->stats.sess_cache_full); 1250 case SSL_CTRL_OPTIONS: 1251 return (ctx->options |= larg); 1252 case SSL_CTRL_CLEAR_OPTIONS: 1253 return (ctx->options &= ~larg); 1254 case SSL_CTRL_MODE: 1255 return (ctx->mode |= larg); 1256 case SSL_CTRL_CLEAR_MODE: 1257 return (ctx->mode &= ~larg); 1258 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1259 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1260 return 0; 1261 ctx->max_send_fragment = larg; 1262 return 1; 1263 case SSL_CTRL_CERT_FLAGS: 1264 return (ctx->cert->cert_flags |= larg); 1265 case SSL_CTRL_CLEAR_CERT_FLAGS: 1266 return (ctx->cert->cert_flags &= ~larg); 1267 default: 1268 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1269 } 1270 } 1271 1272 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) 1273 { 1274 switch (cmd) { 1275 case SSL_CTRL_SET_MSG_CALLBACK: 1276 ctx->msg_callback = (void (*) 1277 (int write_p, int version, int content_type, 1278 const void *buf, size_t len, SSL *ssl, 1279 void *arg))(fp); 1280 return 1; 1281 1282 default: 1283 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1284 } 1285 } 1286 1287 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1288 { 1289 long l; 1290 1291 l = a->id - b->id; 1292 if (l == 0L) 1293 return (0); 1294 else 1295 return ((l > 0) ? 1 : -1); 1296 } 1297 1298 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap, 1299 const SSL_CIPHER *const *bp) 1300 { 1301 long l; 1302 1303 l = (*ap)->id - (*bp)->id; 1304 if (l == 0L) 1305 return (0); 1306 else 1307 return ((l > 0) ? 1 : -1); 1308 } 1309 1310 /** return a STACK of the ciphers available for the SSL and in order of 1311 * preference */ 1312 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1313 { 1314 if (s != NULL) { 1315 if (s->cipher_list != NULL) { 1316 return (s->cipher_list); 1317 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1318 return (s->ctx->cipher_list); 1319 } 1320 } 1321 return (NULL); 1322 } 1323 1324 /** return a STACK of the ciphers available for the SSL and in order of 1325 * algorithm id */ 1326 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1327 { 1328 if (s != NULL) { 1329 if (s->cipher_list_by_id != NULL) { 1330 return (s->cipher_list_by_id); 1331 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) { 1332 return (s->ctx->cipher_list_by_id); 1333 } 1334 } 1335 return (NULL); 1336 } 1337 1338 /** The old interface to get the same thing as SSL_get_ciphers() */ 1339 const char *SSL_get_cipher_list(const SSL *s, int n) 1340 { 1341 SSL_CIPHER *c; 1342 STACK_OF(SSL_CIPHER) *sk; 1343 1344 if (s == NULL) 1345 return (NULL); 1346 sk = SSL_get_ciphers(s); 1347 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1348 return (NULL); 1349 c = sk_SSL_CIPHER_value(sk, n); 1350 if (c == NULL) 1351 return (NULL); 1352 return (c->name); 1353 } 1354 1355 /** specify the ciphers to be used by default by the SSL_CTX */ 1356 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1357 { 1358 STACK_OF(SSL_CIPHER) *sk; 1359 1360 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1361 &ctx->cipher_list_by_id, str, ctx->cert); 1362 /* 1363 * ssl_create_cipher_list may return an empty stack if it was unable to 1364 * find a cipher matching the given rule string (for example if the rule 1365 * string specifies a cipher which has been disabled). This is not an 1366 * error as far as ssl_create_cipher_list is concerned, and hence 1367 * ctx->cipher_list and ctx->cipher_list_by_id has been updated. 1368 */ 1369 if (sk == NULL) 1370 return 0; 1371 else if (sk_SSL_CIPHER_num(sk) == 0) { 1372 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1373 return 0; 1374 } 1375 return 1; 1376 } 1377 1378 /** specify the ciphers to be used by the SSL */ 1379 int SSL_set_cipher_list(SSL *s, const char *str) 1380 { 1381 STACK_OF(SSL_CIPHER) *sk; 1382 1383 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1384 &s->cipher_list_by_id, str, s->cert); 1385 /* see comment in SSL_CTX_set_cipher_list */ 1386 if (sk == NULL) 1387 return 0; 1388 else if (sk_SSL_CIPHER_num(sk) == 0) { 1389 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1390 return 0; 1391 } 1392 return 1; 1393 } 1394 1395 /* works well for SSLv2, not so good for SSLv3 */ 1396 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1397 { 1398 char *p; 1399 STACK_OF(SSL_CIPHER) *sk; 1400 SSL_CIPHER *c; 1401 int i; 1402 1403 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2)) 1404 return (NULL); 1405 1406 p = buf; 1407 sk = s->session->ciphers; 1408 1409 if (sk_SSL_CIPHER_num(sk) == 0) 1410 return NULL; 1411 1412 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1413 int n; 1414 1415 c = sk_SSL_CIPHER_value(sk, i); 1416 n = strlen(c->name); 1417 if (n + 1 > len) { 1418 if (p != buf) 1419 --p; 1420 *p = '\0'; 1421 return buf; 1422 } 1423 strcpy(p, c->name); 1424 p += n; 1425 *(p++) = ':'; 1426 len -= n + 1; 1427 } 1428 p[-1] = '\0'; 1429 return (buf); 1430 } 1431 1432 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 1433 unsigned char *p, 1434 int (*put_cb) (const SSL_CIPHER *, 1435 unsigned char *)) 1436 { 1437 int i, j = 0; 1438 SSL_CIPHER *c; 1439 CERT *ct = s->cert; 1440 unsigned char *q; 1441 int empty_reneg_info_scsv = !s->renegotiate; 1442 /* Set disabled masks for this session */ 1443 ssl_set_client_disabled(s); 1444 1445 if (sk == NULL) 1446 return (0); 1447 q = p; 1448 if (put_cb == NULL) 1449 put_cb = s->method->put_cipher_by_char; 1450 1451 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1452 c = sk_SSL_CIPHER_value(sk, i); 1453 /* Skip disabled ciphers */ 1454 if (c->algorithm_ssl & ct->mask_ssl || 1455 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a) 1456 continue; 1457 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 1458 if (c->id == SSL3_CK_SCSV) { 1459 if (!empty_reneg_info_scsv) 1460 continue; 1461 else 1462 empty_reneg_info_scsv = 0; 1463 } 1464 #endif 1465 j = put_cb(c, p); 1466 p += j; 1467 } 1468 /* 1469 * If p == q, no ciphers; caller indicates an error. Otherwise, add 1470 * applicable SCSVs. 1471 */ 1472 if (p != q) { 1473 if (empty_reneg_info_scsv) { 1474 static SSL_CIPHER scsv = { 1475 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1476 }; 1477 j = put_cb(&scsv, p); 1478 p += j; 1479 #ifdef OPENSSL_RI_DEBUG 1480 fprintf(stderr, 1481 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1482 #endif 1483 } 1484 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) { 1485 static SSL_CIPHER scsv = { 1486 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1487 }; 1488 j = put_cb(&scsv, p); 1489 p += j; 1490 } 1491 } 1492 1493 return (p - q); 1494 } 1495 1496 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, 1497 int num, 1498 STACK_OF(SSL_CIPHER) **skp) 1499 { 1500 const SSL_CIPHER *c; 1501 STACK_OF(SSL_CIPHER) *sk; 1502 int i, n; 1503 1504 if (s->s3) 1505 s->s3->send_connection_binding = 0; 1506 1507 n = ssl_put_cipher_by_char(s, NULL, NULL); 1508 if (n == 0 || (num % n) != 0) { 1509 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1510 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1511 return (NULL); 1512 } 1513 if ((skp == NULL) || (*skp == NULL)) { 1514 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1515 if(sk == NULL) { 1516 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1517 return NULL; 1518 } 1519 } else { 1520 sk = *skp; 1521 sk_SSL_CIPHER_zero(sk); 1522 } 1523 1524 if (s->cert->ciphers_raw) 1525 OPENSSL_free(s->cert->ciphers_raw); 1526 s->cert->ciphers_raw = BUF_memdup(p, num); 1527 if (s->cert->ciphers_raw == NULL) { 1528 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1529 goto err; 1530 } 1531 s->cert->ciphers_rawlen = (size_t)num; 1532 1533 for (i = 0; i < num; i += n) { 1534 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1535 if (s->s3 && (n != 3 || !p[0]) && 1536 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1537 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1538 /* SCSV fatal if renegotiating */ 1539 if (s->renegotiate) { 1540 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1541 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1542 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); 1543 goto err; 1544 } 1545 s->s3->send_connection_binding = 1; 1546 p += n; 1547 #ifdef OPENSSL_RI_DEBUG 1548 fprintf(stderr, "SCSV received by server\n"); 1549 #endif 1550 continue; 1551 } 1552 1553 /* Check for TLS_FALLBACK_SCSV */ 1554 if ((n != 3 || !p[0]) && 1555 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1556 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) { 1557 /* 1558 * The SCSV indicates that the client previously tried a higher 1559 * version. Fail if the current version is an unexpected 1560 * downgrade. 1561 */ 1562 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) { 1563 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1564 SSL_R_INAPPROPRIATE_FALLBACK); 1565 if (s->s3) 1566 ssl3_send_alert(s, SSL3_AL_FATAL, 1567 SSL_AD_INAPPROPRIATE_FALLBACK); 1568 goto err; 1569 } 1570 p += n; 1571 continue; 1572 } 1573 1574 c = ssl_get_cipher_by_char(s, p); 1575 p += n; 1576 if (c != NULL) { 1577 if (!sk_SSL_CIPHER_push(sk, c)) { 1578 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1579 goto err; 1580 } 1581 } 1582 } 1583 1584 if (skp != NULL) 1585 *skp = sk; 1586 return (sk); 1587 err: 1588 if ((skp == NULL) || (*skp == NULL)) 1589 sk_SSL_CIPHER_free(sk); 1590 return (NULL); 1591 } 1592 1593 #ifndef OPENSSL_NO_TLSEXT 1594 /** return a servername extension value if provided in Client Hello, or NULL. 1595 * So far, only host_name types are defined (RFC 3546). 1596 */ 1597 1598 const char *SSL_get_servername(const SSL *s, const int type) 1599 { 1600 if (type != TLSEXT_NAMETYPE_host_name) 1601 return NULL; 1602 1603 return s->session && !s->tlsext_hostname ? 1604 s->session->tlsext_hostname : s->tlsext_hostname; 1605 } 1606 1607 int SSL_get_servername_type(const SSL *s) 1608 { 1609 if (s->session 1610 && (!s->tlsext_hostname ? s->session-> 1611 tlsext_hostname : s->tlsext_hostname)) 1612 return TLSEXT_NAMETYPE_host_name; 1613 return -1; 1614 } 1615 1616 /* 1617 * SSL_select_next_proto implements the standard protocol selection. It is 1618 * expected that this function is called from the callback set by 1619 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a 1620 * vector of 8-bit, length prefixed byte strings. The length byte itself is 1621 * not included in the length. A byte string of length 0 is invalid. No byte 1622 * string may be truncated. The current, but experimental algorithm for 1623 * selecting the protocol is: 1) If the server doesn't support NPN then this 1624 * is indicated to the callback. In this case, the client application has to 1625 * abort the connection or have a default application level protocol. 2) If 1626 * the server supports NPN, but advertises an empty list then the client 1627 * selects the first protcol in its list, but indicates via the API that this 1628 * fallback case was enacted. 3) Otherwise, the client finds the first 1629 * protocol in the server's list that it supports and selects this protocol. 1630 * This is because it's assumed that the server has better information about 1631 * which protocol a client should use. 4) If the client doesn't support any 1632 * of the server's advertised protocols, then this is treated the same as 1633 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was 1634 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1635 */ 1636 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1637 const unsigned char *server, 1638 unsigned int server_len, 1639 const unsigned char *client, 1640 unsigned int client_len) 1641 { 1642 unsigned int i, j; 1643 const unsigned char *result; 1644 int status = OPENSSL_NPN_UNSUPPORTED; 1645 1646 /* 1647 * For each protocol in server preference order, see if we support it. 1648 */ 1649 for (i = 0; i < server_len;) { 1650 for (j = 0; j < client_len;) { 1651 if (server[i] == client[j] && 1652 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) { 1653 /* We found a match */ 1654 result = &server[i]; 1655 status = OPENSSL_NPN_NEGOTIATED; 1656 goto found; 1657 } 1658 j += client[j]; 1659 j++; 1660 } 1661 i += server[i]; 1662 i++; 1663 } 1664 1665 /* There's no overlap between our protocols and the server's list. */ 1666 result = client; 1667 status = OPENSSL_NPN_NO_OVERLAP; 1668 1669 found: 1670 *out = (unsigned char *)result + 1; 1671 *outlen = result[0]; 1672 return status; 1673 } 1674 1675 # ifndef OPENSSL_NO_NEXTPROTONEG 1676 /* 1677 * SSL_get0_next_proto_negotiated sets *data and *len to point to the 1678 * client's requested protocol for this connection and returns 0. If the 1679 * client didn't request any protocol, then *data is set to NULL. Note that 1680 * the client can request any protocol it chooses. The value returned from 1681 * this function need not be a member of the list of supported protocols 1682 * provided by the callback. 1683 */ 1684 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1685 unsigned *len) 1686 { 1687 *data = s->next_proto_negotiated; 1688 if (!*data) { 1689 *len = 0; 1690 } else { 1691 *len = s->next_proto_negotiated_len; 1692 } 1693 } 1694 1695 /* 1696 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when 1697 * a TLS server needs a list of supported protocols for Next Protocol 1698 * Negotiation. The returned list must be in wire format. The list is 1699 * returned by setting |out| to point to it and |outlen| to its length. This 1700 * memory will not be modified, but one should assume that the SSL* keeps a 1701 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it 1702 * wishes to advertise. Otherwise, no such extension will be included in the 1703 * ServerHello. 1704 */ 1705 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, 1706 int (*cb) (SSL *ssl, 1707 const unsigned char 1708 **out, 1709 unsigned int *outlen, 1710 void *arg), void *arg) 1711 { 1712 ctx->next_protos_advertised_cb = cb; 1713 ctx->next_protos_advertised_cb_arg = arg; 1714 } 1715 1716 /* 1717 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1718 * client needs to select a protocol from the server's provided list. |out| 1719 * must be set to point to the selected protocol (which may be within |in|). 1720 * The length of the protocol name must be written into |outlen|. The 1721 * server's advertised protocols are provided in |in| and |inlen|. The 1722 * callback can assume that |in| is syntactically valid. The client must 1723 * select a protocol. It is fatal to the connection if this callback returns 1724 * a value other than SSL_TLSEXT_ERR_OK. 1725 */ 1726 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, 1727 int (*cb) (SSL *s, unsigned char **out, 1728 unsigned char *outlen, 1729 const unsigned char *in, 1730 unsigned int inlen, 1731 void *arg), void *arg) 1732 { 1733 ctx->next_proto_select_cb = cb; 1734 ctx->next_proto_select_cb_arg = arg; 1735 } 1736 # endif 1737 1738 /* 1739 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|. 1740 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1741 * length-prefixed strings). Returns 0 on success. 1742 */ 1743 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1744 unsigned protos_len) 1745 { 1746 if (ctx->alpn_client_proto_list) 1747 OPENSSL_free(ctx->alpn_client_proto_list); 1748 1749 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1750 if (!ctx->alpn_client_proto_list) 1751 return 1; 1752 memcpy(ctx->alpn_client_proto_list, protos, protos_len); 1753 ctx->alpn_client_proto_list_len = protos_len; 1754 1755 return 0; 1756 } 1757 1758 /* 1759 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|. 1760 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit 1761 * length-prefixed strings). Returns 0 on success. 1762 */ 1763 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1764 unsigned protos_len) 1765 { 1766 if (ssl->alpn_client_proto_list) 1767 OPENSSL_free(ssl->alpn_client_proto_list); 1768 1769 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len); 1770 if (!ssl->alpn_client_proto_list) 1771 return 1; 1772 memcpy(ssl->alpn_client_proto_list, protos, protos_len); 1773 ssl->alpn_client_proto_list_len = protos_len; 1774 1775 return 0; 1776 } 1777 1778 /* 1779 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is 1780 * called during ClientHello processing in order to select an ALPN protocol 1781 * from the client's list of offered protocols. 1782 */ 1783 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx, 1784 int (*cb) (SSL *ssl, 1785 const unsigned char **out, 1786 unsigned char *outlen, 1787 const unsigned char *in, 1788 unsigned int inlen, 1789 void *arg), void *arg) 1790 { 1791 ctx->alpn_select_cb = cb; 1792 ctx->alpn_select_cb_arg = arg; 1793 } 1794 1795 /* 1796 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from 1797 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name 1798 * (not including the leading length-prefix byte). If the server didn't 1799 * respond with a negotiated protocol then |*len| will be zero. 1800 */ 1801 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1802 unsigned *len) 1803 { 1804 *data = NULL; 1805 if (ssl->s3) 1806 *data = ssl->s3->alpn_selected; 1807 if (*data == NULL) 1808 *len = 0; 1809 else 1810 *len = ssl->s3->alpn_selected_len; 1811 } 1812 1813 #endif /* !OPENSSL_NO_TLSEXT */ 1814 1815 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1816 const char *label, size_t llen, 1817 const unsigned char *p, size_t plen, 1818 int use_context) 1819 { 1820 if (s->version < TLS1_VERSION) 1821 return -1; 1822 1823 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1824 llen, p, plen, 1825 use_context); 1826 } 1827 1828 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1829 { 1830 unsigned long l; 1831 1832 l = (unsigned long) 1833 ((unsigned int)a->session_id[0]) | 1834 ((unsigned int)a->session_id[1] << 8L) | 1835 ((unsigned long)a->session_id[2] << 16L) | 1836 ((unsigned long)a->session_id[3] << 24L); 1837 return (l); 1838 } 1839 1840 /* 1841 * NB: If this function (or indeed the hash function which uses a sort of 1842 * coarser function than this one) is changed, ensure 1843 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on 1844 * being able to construct an SSL_SESSION that will collide with any existing 1845 * session with a matching session ID. 1846 */ 1847 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1848 { 1849 if (a->ssl_version != b->ssl_version) 1850 return (1); 1851 if (a->session_id_length != b->session_id_length) 1852 return (1); 1853 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1854 } 1855 1856 /* 1857 * These wrapper functions should remain rather than redeclaring 1858 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1859 * variable. The reason is that the functions aren't static, they're exposed 1860 * via ssl.h. 1861 */ 1862 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1863 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1864 1865 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1866 { 1867 SSL_CTX *ret = NULL; 1868 1869 if (meth == NULL) { 1870 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED); 1871 return (NULL); 1872 } 1873 #ifdef OPENSSL_FIPS 1874 if (FIPS_mode() && (meth->version < TLS1_VERSION)) { 1875 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1876 return NULL; 1877 } 1878 #endif 1879 1880 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1881 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1882 goto err; 1883 } 1884 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1885 if (ret == NULL) 1886 goto err; 1887 1888 memset(ret, 0, sizeof(SSL_CTX)); 1889 1890 ret->method = meth; 1891 1892 ret->cert_store = NULL; 1893 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1894 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1895 ret->session_cache_head = NULL; 1896 ret->session_cache_tail = NULL; 1897 1898 /* We take the system default */ 1899 ret->session_timeout = meth->get_timeout(); 1900 1901 ret->new_session_cb = 0; 1902 ret->remove_session_cb = 0; 1903 ret->get_session_cb = 0; 1904 ret->generate_session_id = 0; 1905 1906 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1907 1908 ret->references = 1; 1909 ret->quiet_shutdown = 0; 1910 1911 /* ret->cipher=NULL;*/ 1912 /*- 1913 ret->s2->challenge=NULL; 1914 ret->master_key=NULL; 1915 ret->key_arg=NULL; 1916 ret->s2->conn_id=NULL; */ 1917 1918 ret->info_callback = NULL; 1919 1920 ret->app_verify_callback = 0; 1921 ret->app_verify_arg = NULL; 1922 1923 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1924 ret->read_ahead = 0; 1925 ret->msg_callback = 0; 1926 ret->msg_callback_arg = NULL; 1927 ret->verify_mode = SSL_VERIFY_NONE; 1928 #if 0 1929 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */ 1930 #endif 1931 ret->sid_ctx_length = 0; 1932 ret->default_verify_callback = NULL; 1933 if ((ret->cert = ssl_cert_new()) == NULL) 1934 goto err; 1935 1936 ret->default_passwd_callback = 0; 1937 ret->default_passwd_callback_userdata = NULL; 1938 ret->client_cert_cb = 0; 1939 ret->app_gen_cookie_cb = 0; 1940 ret->app_verify_cookie_cb = 0; 1941 1942 ret->sessions = lh_SSL_SESSION_new(); 1943 if (ret->sessions == NULL) 1944 goto err; 1945 ret->cert_store = X509_STORE_new(); 1946 if (ret->cert_store == NULL) 1947 goto err; 1948 1949 ssl_create_cipher_list(ret->method, 1950 &ret->cipher_list, &ret->cipher_list_by_id, 1951 meth->version == 1952 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, 1953 ret->cert); 1954 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1955 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS); 1956 goto err2; 1957 } 1958 1959 ret->param = X509_VERIFY_PARAM_new(); 1960 if (!ret->param) 1961 goto err; 1962 1963 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) { 1964 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1965 goto err2; 1966 } 1967 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1968 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1969 goto err2; 1970 } 1971 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1972 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1973 goto err2; 1974 } 1975 1976 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1977 goto err; 1978 1979 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1980 1981 ret->extra_certs = NULL; 1982 /* No compression for DTLS */ 1983 if (meth->version != DTLS1_VERSION) 1984 ret->comp_methods = SSL_COMP_get_compression_methods(); 1985 1986 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1987 1988 #ifndef OPENSSL_NO_TLSEXT 1989 ret->tlsext_servername_callback = 0; 1990 ret->tlsext_servername_arg = NULL; 1991 /* Setup RFC4507 ticket keys */ 1992 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1993 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1994 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1995 ret->options |= SSL_OP_NO_TICKET; 1996 1997 ret->tlsext_status_cb = 0; 1998 ret->tlsext_status_arg = NULL; 1999 2000 # ifndef OPENSSL_NO_NEXTPROTONEG 2001 ret->next_protos_advertised_cb = 0; 2002 ret->next_proto_select_cb = 0; 2003 # endif 2004 #endif 2005 #ifndef OPENSSL_NO_PSK 2006 ret->psk_identity_hint = NULL; 2007 ret->psk_client_callback = NULL; 2008 ret->psk_server_callback = NULL; 2009 #endif 2010 #ifndef OPENSSL_NO_SRP 2011 SSL_CTX_SRP_CTX_init(ret); 2012 #endif 2013 #ifndef OPENSSL_NO_BUF_FREELISTS 2014 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 2015 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2016 if (!ret->rbuf_freelist) 2017 goto err; 2018 ret->rbuf_freelist->chunklen = 0; 2019 ret->rbuf_freelist->len = 0; 2020 ret->rbuf_freelist->head = NULL; 2021 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 2022 if (!ret->wbuf_freelist) { 2023 OPENSSL_free(ret->rbuf_freelist); 2024 goto err; 2025 } 2026 ret->wbuf_freelist->chunklen = 0; 2027 ret->wbuf_freelist->len = 0; 2028 ret->wbuf_freelist->head = NULL; 2029 #endif 2030 #ifndef OPENSSL_NO_ENGINE 2031 ret->client_cert_engine = NULL; 2032 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 2033 # define eng_strx(x) #x 2034 # define eng_str(x) eng_strx(x) 2035 /* Use specific client engine automatically... ignore errors */ 2036 { 2037 ENGINE *eng; 2038 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2039 if (!eng) { 2040 ERR_clear_error(); 2041 ENGINE_load_builtin_engines(); 2042 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 2043 } 2044 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 2045 ERR_clear_error(); 2046 } 2047 # endif 2048 #endif 2049 /* 2050 * Default is to connect to non-RI servers. When RI is more widely 2051 * deployed might change this. 2052 */ 2053 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 2054 2055 return (ret); 2056 err: 2057 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE); 2058 err2: 2059 if (ret != NULL) 2060 SSL_CTX_free(ret); 2061 return (NULL); 2062 } 2063 2064 #if 0 2065 static void SSL_COMP_free(SSL_COMP *comp) 2066 { 2067 OPENSSL_free(comp); 2068 } 2069 #endif 2070 2071 #ifndef OPENSSL_NO_BUF_FREELISTS 2072 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 2073 { 2074 SSL3_BUF_FREELIST_ENTRY *ent, *next; 2075 for (ent = list->head; ent; ent = next) { 2076 next = ent->next; 2077 OPENSSL_free(ent); 2078 } 2079 OPENSSL_free(list); 2080 } 2081 #endif 2082 2083 void SSL_CTX_free(SSL_CTX *a) 2084 { 2085 int i; 2086 2087 if (a == NULL) 2088 return; 2089 2090 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 2091 #ifdef REF_PRINT 2092 REF_PRINT("SSL_CTX", a); 2093 #endif 2094 if (i > 0) 2095 return; 2096 #ifdef REF_CHECK 2097 if (i < 0) { 2098 fprintf(stderr, "SSL_CTX_free, bad reference count\n"); 2099 abort(); /* ok */ 2100 } 2101 #endif 2102 2103 if (a->param) 2104 X509_VERIFY_PARAM_free(a->param); 2105 2106 /* 2107 * Free internal session cache. However: the remove_cb() may reference 2108 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 2109 * after the sessions were flushed. 2110 * As the ex_data handling routines might also touch the session cache, 2111 * the most secure solution seems to be: empty (flush) the cache, then 2112 * free ex_data, then finally free the cache. 2113 * (See ticket [openssl.org #212].) 2114 */ 2115 if (a->sessions != NULL) 2116 SSL_CTX_flush_sessions(a, 0); 2117 2118 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 2119 2120 if (a->sessions != NULL) 2121 lh_SSL_SESSION_free(a->sessions); 2122 2123 if (a->cert_store != NULL) 2124 X509_STORE_free(a->cert_store); 2125 if (a->cipher_list != NULL) 2126 sk_SSL_CIPHER_free(a->cipher_list); 2127 if (a->cipher_list_by_id != NULL) 2128 sk_SSL_CIPHER_free(a->cipher_list_by_id); 2129 if (a->cert != NULL) 2130 ssl_cert_free(a->cert); 2131 if (a->client_CA != NULL) 2132 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 2133 if (a->extra_certs != NULL) 2134 sk_X509_pop_free(a->extra_certs, X509_free); 2135 #if 0 /* This should never be done, since it 2136 * removes a global database */ 2137 if (a->comp_methods != NULL) 2138 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 2139 #else 2140 a->comp_methods = NULL; 2141 #endif 2142 2143 #ifndef OPENSSL_NO_SRTP 2144 if (a->srtp_profiles) 2145 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 2146 #endif 2147 2148 #ifndef OPENSSL_NO_PSK 2149 if (a->psk_identity_hint) 2150 OPENSSL_free(a->psk_identity_hint); 2151 #endif 2152 #ifndef OPENSSL_NO_SRP 2153 SSL_CTX_SRP_CTX_free(a); 2154 #endif 2155 #ifndef OPENSSL_NO_ENGINE 2156 if (a->client_cert_engine) 2157 ENGINE_finish(a->client_cert_engine); 2158 #endif 2159 2160 #ifndef OPENSSL_NO_BUF_FREELISTS 2161 if (a->wbuf_freelist) 2162 ssl_buf_freelist_free(a->wbuf_freelist); 2163 if (a->rbuf_freelist) 2164 ssl_buf_freelist_free(a->rbuf_freelist); 2165 #endif 2166 #ifndef OPENSSL_NO_TLSEXT 2167 # ifndef OPENSSL_NO_EC 2168 if (a->tlsext_ecpointformatlist) 2169 OPENSSL_free(a->tlsext_ecpointformatlist); 2170 if (a->tlsext_ellipticcurvelist) 2171 OPENSSL_free(a->tlsext_ellipticcurvelist); 2172 # endif /* OPENSSL_NO_EC */ 2173 if (a->alpn_client_proto_list != NULL) 2174 OPENSSL_free(a->alpn_client_proto_list); 2175 #endif 2176 2177 OPENSSL_free(a); 2178 } 2179 2180 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2181 { 2182 ctx->default_passwd_callback = cb; 2183 } 2184 2185 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2186 { 2187 ctx->default_passwd_callback_userdata = u; 2188 } 2189 2190 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 2191 int (*cb) (X509_STORE_CTX *, void *), 2192 void *arg) 2193 { 2194 ctx->app_verify_callback = cb; 2195 ctx->app_verify_arg = arg; 2196 } 2197 2198 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, 2199 int (*cb) (int, X509_STORE_CTX *)) 2200 { 2201 ctx->verify_mode = mode; 2202 ctx->default_verify_callback = cb; 2203 } 2204 2205 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2206 { 2207 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2208 } 2209 2210 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), 2211 void *arg) 2212 { 2213 ssl_cert_set_cert_cb(c->cert, cb, arg); 2214 } 2215 2216 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg) 2217 { 2218 ssl_cert_set_cert_cb(s->cert, cb, arg); 2219 } 2220 2221 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2222 { 2223 CERT_PKEY *cpk; 2224 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2225 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2226 int rsa_tmp_export, dh_tmp_export, kl; 2227 unsigned long mask_k, mask_a, emask_k, emask_a; 2228 #ifndef OPENSSL_NO_ECDSA 2229 int have_ecc_cert, ecdsa_ok, ecc_pkey_size; 2230 #endif 2231 #ifndef OPENSSL_NO_ECDH 2232 int have_ecdh_tmp, ecdh_ok; 2233 #endif 2234 #ifndef OPENSSL_NO_EC 2235 X509 *x = NULL; 2236 EVP_PKEY *ecc_pkey = NULL; 2237 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2238 #endif 2239 if (c == NULL) 2240 return; 2241 2242 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2243 2244 #ifndef OPENSSL_NO_RSA 2245 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2246 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2247 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl)); 2248 #else 2249 rsa_tmp = rsa_tmp_export = 0; 2250 #endif 2251 #ifndef OPENSSL_NO_DH 2252 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2253 dh_tmp_export = (c->dh_tmp_cb != NULL || 2254 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl)); 2255 #else 2256 dh_tmp = dh_tmp_export = 0; 2257 #endif 2258 2259 #ifndef OPENSSL_NO_ECDH 2260 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto); 2261 #endif 2262 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2263 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID; 2264 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2265 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2266 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2267 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2268 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN; 2269 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2270 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID; 2271 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2272 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2273 /* FIX THIS EAY EAY EAY */ 2274 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID; 2275 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl); 2276 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2277 #ifndef OPENSSL_NO_EC 2278 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID; 2279 #endif 2280 mask_k = 0; 2281 mask_a = 0; 2282 emask_k = 0; 2283 emask_a = 0; 2284 2285 #ifdef CIPHER_DEBUG 2286 fprintf(stderr, 2287 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2288 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc, 2289 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2290 #endif 2291 2292 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2293 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2294 mask_k |= SSL_kGOST; 2295 mask_a |= SSL_aGOST01; 2296 } 2297 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2298 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2299 mask_k |= SSL_kGOST; 2300 mask_a |= SSL_aGOST94; 2301 } 2302 2303 if (rsa_enc || (rsa_tmp && rsa_sign)) 2304 mask_k |= SSL_kRSA; 2305 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2306 emask_k |= SSL_kRSA; 2307 2308 #if 0 2309 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2310 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign)) 2311 mask_k |= SSL_kEDH; 2312 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2313 (rsa_enc || rsa_sign || dsa_sign)) 2314 emask_k |= SSL_kEDH; 2315 #endif 2316 2317 if (dh_tmp_export) 2318 emask_k |= SSL_kEDH; 2319 2320 if (dh_tmp) 2321 mask_k |= SSL_kEDH; 2322 2323 if (dh_rsa) 2324 mask_k |= SSL_kDHr; 2325 if (dh_rsa_export) 2326 emask_k |= SSL_kDHr; 2327 2328 if (dh_dsa) 2329 mask_k |= SSL_kDHd; 2330 if (dh_dsa_export) 2331 emask_k |= SSL_kDHd; 2332 2333 if (mask_k & (SSL_kDHr | SSL_kDHd)) 2334 mask_a |= SSL_aDH; 2335 2336 if (rsa_enc || rsa_sign) { 2337 mask_a |= SSL_aRSA; 2338 emask_a |= SSL_aRSA; 2339 } 2340 2341 if (dsa_sign) { 2342 mask_a |= SSL_aDSS; 2343 emask_a |= SSL_aDSS; 2344 } 2345 2346 mask_a |= SSL_aNULL; 2347 emask_a |= SSL_aNULL; 2348 2349 #ifndef OPENSSL_NO_KRB5 2350 mask_k |= SSL_kKRB5; 2351 mask_a |= SSL_aKRB5; 2352 emask_k |= SSL_kKRB5; 2353 emask_a |= SSL_aKRB5; 2354 #endif 2355 2356 /* 2357 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites 2358 * depending on the key usage extension. 2359 */ 2360 #ifndef OPENSSL_NO_EC 2361 if (have_ecc_cert) { 2362 cpk = &c->pkeys[SSL_PKEY_ECC]; 2363 x = cpk->x509; 2364 /* This call populates extension flags (ex_flags) */ 2365 X509_check_purpose(x, -1, 0); 2366 # ifndef OPENSSL_NO_ECDH 2367 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2368 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2369 # endif 2370 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2371 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2372 if (!(cpk->valid_flags & CERT_PKEY_SIGN)) 2373 ecdsa_ok = 0; 2374 ecc_pkey = X509_get_pubkey(x); 2375 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0; 2376 EVP_PKEY_free(ecc_pkey); 2377 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2378 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2379 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2380 } 2381 # ifndef OPENSSL_NO_ECDH 2382 if (ecdh_ok) { 2383 2384 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2385 mask_k |= SSL_kECDHr; 2386 mask_a |= SSL_aECDH; 2387 if (ecc_pkey_size <= 163) { 2388 emask_k |= SSL_kECDHr; 2389 emask_a |= SSL_aECDH; 2390 } 2391 } 2392 2393 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2394 mask_k |= SSL_kECDHe; 2395 mask_a |= SSL_aECDH; 2396 if (ecc_pkey_size <= 163) { 2397 emask_k |= SSL_kECDHe; 2398 emask_a |= SSL_aECDH; 2399 } 2400 } 2401 } 2402 # endif 2403 # ifndef OPENSSL_NO_ECDSA 2404 if (ecdsa_ok) { 2405 mask_a |= SSL_aECDSA; 2406 emask_a |= SSL_aECDSA; 2407 } 2408 # endif 2409 } 2410 #endif 2411 2412 #ifndef OPENSSL_NO_ECDH 2413 if (have_ecdh_tmp) { 2414 mask_k |= SSL_kEECDH; 2415 emask_k |= SSL_kEECDH; 2416 } 2417 #endif 2418 2419 #ifndef OPENSSL_NO_PSK 2420 mask_k |= SSL_kPSK; 2421 mask_a |= SSL_aPSK; 2422 emask_k |= SSL_kPSK; 2423 emask_a |= SSL_aPSK; 2424 #endif 2425 2426 c->mask_k = mask_k; 2427 c->mask_a = mask_a; 2428 c->export_mask_k = emask_k; 2429 c->export_mask_a = emask_a; 2430 c->valid = 1; 2431 } 2432 2433 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2434 #define ku_reject(x, usage) \ 2435 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2436 2437 #ifndef OPENSSL_NO_EC 2438 2439 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2440 { 2441 unsigned long alg_k, alg_a; 2442 EVP_PKEY *pkey = NULL; 2443 int keysize = 0; 2444 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2445 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2446 2447 alg_k = cs->algorithm_mkey; 2448 alg_a = cs->algorithm_auth; 2449 2450 if (SSL_C_IS_EXPORT(cs)) { 2451 /* ECDH key length in export ciphers must be <= 163 bits */ 2452 pkey = X509_get_pubkey(x); 2453 if (pkey == NULL) 2454 return 0; 2455 keysize = EVP_PKEY_bits(pkey); 2456 EVP_PKEY_free(pkey); 2457 if (keysize > 163) 2458 return 0; 2459 } 2460 2461 /* This call populates the ex_flags field correctly */ 2462 X509_check_purpose(x, -1, 0); 2463 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2464 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2465 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2466 } 2467 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2468 /* key usage, if present, must allow key agreement */ 2469 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2470 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2471 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2472 return 0; 2473 } 2474 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) { 2475 /* signature alg must be ECDSA */ 2476 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2477 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2478 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2479 return 0; 2480 } 2481 } 2482 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) { 2483 /* signature alg must be RSA */ 2484 2485 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2486 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2487 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2488 return 0; 2489 } 2490 } 2491 } 2492 if (alg_a & SSL_aECDSA) { 2493 /* key usage, if present, must allow signing */ 2494 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2495 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2496 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2497 return 0; 2498 } 2499 } 2500 2501 return 1; /* all checks are ok */ 2502 } 2503 2504 #endif 2505 2506 static int ssl_get_server_cert_index(const SSL *s) 2507 { 2508 int idx; 2509 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher); 2510 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509) 2511 idx = SSL_PKEY_RSA_SIGN; 2512 if (idx == -1) 2513 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR); 2514 return idx; 2515 } 2516 2517 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2518 { 2519 CERT *c; 2520 int i; 2521 2522 c = s->cert; 2523 if (!s->s3 || !s->s3->tmp.new_cipher) 2524 return NULL; 2525 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2526 2527 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2528 /* 2529 * Broken protocol test: return last used certificate: which may mismatch 2530 * the one expected. 2531 */ 2532 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2533 return c->key; 2534 #endif 2535 2536 i = ssl_get_server_cert_index(s); 2537 2538 /* This may or may not be an error. */ 2539 if (i < 0) 2540 return NULL; 2541 2542 /* May be NULL. */ 2543 return &c->pkeys[i]; 2544 } 2545 2546 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, 2547 const EVP_MD **pmd) 2548 { 2549 unsigned long alg_a; 2550 CERT *c; 2551 int idx = -1; 2552 2553 alg_a = cipher->algorithm_auth; 2554 c = s->cert; 2555 2556 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL 2557 /* 2558 * Broken protocol test: use last key: which may mismatch the one 2559 * expected. 2560 */ 2561 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL) 2562 idx = c->key - c->pkeys; 2563 else 2564 #endif 2565 2566 if ((alg_a & SSL_aDSS) && 2567 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2568 idx = SSL_PKEY_DSA_SIGN; 2569 else if (alg_a & SSL_aRSA) { 2570 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2571 idx = SSL_PKEY_RSA_SIGN; 2572 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2573 idx = SSL_PKEY_RSA_ENC; 2574 } else if ((alg_a & SSL_aECDSA) && 2575 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2576 idx = SSL_PKEY_ECC; 2577 if (idx == -1) { 2578 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2579 return (NULL); 2580 } 2581 if (pmd) 2582 *pmd = c->pkeys[idx].digest; 2583 return c->pkeys[idx].privatekey; 2584 } 2585 2586 #ifndef OPENSSL_NO_TLSEXT 2587 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo, 2588 size_t *serverinfo_length) 2589 { 2590 CERT *c = NULL; 2591 int i = 0; 2592 *serverinfo_length = 0; 2593 2594 c = s->cert; 2595 i = ssl_get_server_cert_index(s); 2596 2597 if (i == -1) 2598 return 0; 2599 if (c->pkeys[i].serverinfo == NULL) 2600 return 0; 2601 2602 *serverinfo = c->pkeys[i].serverinfo; 2603 *serverinfo_length = c->pkeys[i].serverinfo_length; 2604 return 1; 2605 } 2606 #endif 2607 2608 void ssl_update_cache(SSL *s, int mode) 2609 { 2610 int i; 2611 2612 /* 2613 * If the session_id_length is 0, we are not supposed to cache it, and it 2614 * would be rather hard to do anyway :-) 2615 */ 2616 if (s->session->session_id_length == 0) 2617 return; 2618 2619 i = s->session_ctx->session_cache_mode; 2620 if ((i & mode) && (!s->hit) 2621 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2622 || SSL_CTX_add_session(s->session_ctx, s->session)) 2623 && (s->session_ctx->new_session_cb != NULL)) { 2624 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2625 if (!s->session_ctx->new_session_cb(s, s->session)) 2626 SSL_SESSION_free(s->session); 2627 } 2628 2629 /* auto flush every 255 connections */ 2630 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) { 2631 if ((((mode & SSL_SESS_CACHE_CLIENT) 2632 ? s->session_ctx->stats.sess_connect_good 2633 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2634 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL)); 2635 } 2636 } 2637 } 2638 2639 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx) 2640 { 2641 return ctx->method; 2642 } 2643 2644 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2645 { 2646 return (s->method); 2647 } 2648 2649 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2650 { 2651 int conn = -1; 2652 int ret = 1; 2653 2654 if (s->method != meth) { 2655 if (s->handshake_func != NULL) 2656 conn = (s->handshake_func == s->method->ssl_connect); 2657 2658 if (s->method->version == meth->version) 2659 s->method = meth; 2660 else { 2661 s->method->ssl_free(s); 2662 s->method = meth; 2663 ret = s->method->ssl_new(s); 2664 } 2665 2666 if (conn == 1) 2667 s->handshake_func = meth->ssl_connect; 2668 else if (conn == 0) 2669 s->handshake_func = meth->ssl_accept; 2670 } 2671 return (ret); 2672 } 2673 2674 int SSL_get_error(const SSL *s, int i) 2675 { 2676 int reason; 2677 unsigned long l; 2678 BIO *bio; 2679 2680 if (i > 0) 2681 return (SSL_ERROR_NONE); 2682 2683 /* 2684 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc, 2685 * where we do encode the error 2686 */ 2687 if ((l = ERR_peek_error()) != 0) { 2688 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2689 return (SSL_ERROR_SYSCALL); 2690 else 2691 return (SSL_ERROR_SSL); 2692 } 2693 2694 if ((i < 0) && SSL_want_read(s)) { 2695 bio = SSL_get_rbio(s); 2696 if (BIO_should_read(bio)) 2697 return (SSL_ERROR_WANT_READ); 2698 else if (BIO_should_write(bio)) 2699 /* 2700 * This one doesn't make too much sense ... We never try to write 2701 * to the rbio, and an application program where rbio and wbio 2702 * are separate couldn't even know what it should wait for. 2703 * However if we ever set s->rwstate incorrectly (so that we have 2704 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and 2705 * wbio *are* the same, this test works around that bug; so it 2706 * might be safer to keep it. 2707 */ 2708 return (SSL_ERROR_WANT_WRITE); 2709 else if (BIO_should_io_special(bio)) { 2710 reason = BIO_get_retry_reason(bio); 2711 if (reason == BIO_RR_CONNECT) 2712 return (SSL_ERROR_WANT_CONNECT); 2713 else if (reason == BIO_RR_ACCEPT) 2714 return (SSL_ERROR_WANT_ACCEPT); 2715 else 2716 return (SSL_ERROR_SYSCALL); /* unknown */ 2717 } 2718 } 2719 2720 if ((i < 0) && SSL_want_write(s)) { 2721 bio = SSL_get_wbio(s); 2722 if (BIO_should_write(bio)) 2723 return (SSL_ERROR_WANT_WRITE); 2724 else if (BIO_should_read(bio)) 2725 /* 2726 * See above (SSL_want_read(s) with BIO_should_write(bio)) 2727 */ 2728 return (SSL_ERROR_WANT_READ); 2729 else if (BIO_should_io_special(bio)) { 2730 reason = BIO_get_retry_reason(bio); 2731 if (reason == BIO_RR_CONNECT) 2732 return (SSL_ERROR_WANT_CONNECT); 2733 else if (reason == BIO_RR_ACCEPT) 2734 return (SSL_ERROR_WANT_ACCEPT); 2735 else 2736 return (SSL_ERROR_SYSCALL); 2737 } 2738 } 2739 if ((i < 0) && SSL_want_x509_lookup(s)) { 2740 return (SSL_ERROR_WANT_X509_LOOKUP); 2741 } 2742 2743 if (i == 0) { 2744 if (s->version == SSL2_VERSION) { 2745 /* assume it is the socket being closed */ 2746 return (SSL_ERROR_ZERO_RETURN); 2747 } else { 2748 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2749 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2750 return (SSL_ERROR_ZERO_RETURN); 2751 } 2752 } 2753 return (SSL_ERROR_SYSCALL); 2754 } 2755 2756 int SSL_do_handshake(SSL *s) 2757 { 2758 int ret = 1; 2759 2760 if (s->handshake_func == NULL) { 2761 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET); 2762 return (-1); 2763 } 2764 2765 s->method->ssl_renegotiate_check(s); 2766 2767 if (SSL_in_init(s) || SSL_in_before(s)) { 2768 ret = s->handshake_func(s); 2769 } 2770 return (ret); 2771 } 2772 2773 /* 2774 * For the next 2 functions, SSL_clear() sets shutdown and so one of these 2775 * calls will reset it 2776 */ 2777 void SSL_set_accept_state(SSL *s) 2778 { 2779 s->server = 1; 2780 s->shutdown = 0; 2781 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE; 2782 s->handshake_func = s->method->ssl_accept; 2783 /* clear the current cipher */ 2784 ssl_clear_cipher_ctx(s); 2785 ssl_clear_hash_ctx(&s->read_hash); 2786 ssl_clear_hash_ctx(&s->write_hash); 2787 } 2788 2789 void SSL_set_connect_state(SSL *s) 2790 { 2791 s->server = 0; 2792 s->shutdown = 0; 2793 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE; 2794 s->handshake_func = s->method->ssl_connect; 2795 /* clear the current cipher */ 2796 ssl_clear_cipher_ctx(s); 2797 ssl_clear_hash_ctx(&s->read_hash); 2798 ssl_clear_hash_ctx(&s->write_hash); 2799 } 2800 2801 int ssl_undefined_function(SSL *s) 2802 { 2803 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2804 return (0); 2805 } 2806 2807 int ssl_undefined_void_function(void) 2808 { 2809 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2810 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2811 return (0); 2812 } 2813 2814 int ssl_undefined_const_function(const SSL *s) 2815 { 2816 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2817 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2818 return (0); 2819 } 2820 2821 SSL_METHOD *ssl_bad_method(int ver) 2822 { 2823 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2824 return (NULL); 2825 } 2826 2827 const char *SSL_get_version(const SSL *s) 2828 { 2829 if (s->version == TLS1_2_VERSION) 2830 return ("TLSv1.2"); 2831 else if (s->version == TLS1_1_VERSION) 2832 return ("TLSv1.1"); 2833 else if (s->version == TLS1_VERSION) 2834 return ("TLSv1"); 2835 else if (s->version == SSL3_VERSION) 2836 return ("SSLv3"); 2837 else if (s->version == SSL2_VERSION) 2838 return ("SSLv2"); 2839 else if (s->version == DTLS1_BAD_VER) 2840 return ("DTLSv0.9"); 2841 else if (s->version == DTLS1_VERSION) 2842 return ("DTLSv1"); 2843 else if (s->version == DTLS1_2_VERSION) 2844 return ("DTLSv1.2"); 2845 else 2846 return ("unknown"); 2847 } 2848 2849 SSL *SSL_dup(SSL *s) 2850 { 2851 STACK_OF(X509_NAME) *sk; 2852 X509_NAME *xn; 2853 SSL *ret; 2854 int i; 2855 2856 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2857 return (NULL); 2858 2859 ret->version = s->version; 2860 ret->type = s->type; 2861 ret->method = s->method; 2862 2863 if (s->session != NULL) { 2864 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2865 SSL_copy_session_id(ret, s); 2866 } else { 2867 /* 2868 * No session has been established yet, so we have to expect that 2869 * s->cert or ret->cert will be changed later -- they should not both 2870 * point to the same object, and thus we can't use 2871 * SSL_copy_session_id. 2872 */ 2873 2874 ret->method->ssl_free(ret); 2875 ret->method = s->method; 2876 ret->method->ssl_new(ret); 2877 2878 if (s->cert != NULL) { 2879 if (ret->cert != NULL) { 2880 ssl_cert_free(ret->cert); 2881 } 2882 ret->cert = ssl_cert_dup(s->cert); 2883 if (ret->cert == NULL) 2884 goto err; 2885 } 2886 2887 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length); 2888 } 2889 2890 ret->options = s->options; 2891 ret->mode = s->mode; 2892 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2893 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2894 ret->msg_callback = s->msg_callback; 2895 ret->msg_callback_arg = s->msg_callback_arg; 2896 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s)); 2897 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2898 ret->generate_session_id = s->generate_session_id; 2899 2900 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2901 2902 ret->debug = s->debug; 2903 2904 /* copy app data, a little dangerous perhaps */ 2905 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2906 goto err; 2907 2908 /* setup rbio, and wbio */ 2909 if (s->rbio != NULL) { 2910 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio)) 2911 goto err; 2912 } 2913 if (s->wbio != NULL) { 2914 if (s->wbio != s->rbio) { 2915 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio)) 2916 goto err; 2917 } else 2918 ret->wbio = ret->rbio; 2919 } 2920 ret->rwstate = s->rwstate; 2921 ret->in_handshake = s->in_handshake; 2922 ret->handshake_func = s->handshake_func; 2923 ret->server = s->server; 2924 ret->renegotiate = s->renegotiate; 2925 ret->new_session = s->new_session; 2926 ret->quiet_shutdown = s->quiet_shutdown; 2927 ret->shutdown = s->shutdown; 2928 ret->state = s->state; /* SSL_dup does not really work at any state, 2929 * though */ 2930 ret->rstate = s->rstate; 2931 ret->init_num = 0; /* would have to copy ret->init_buf, 2932 * ret->init_msg, ret->init_num, 2933 * ret->init_off */ 2934 ret->hit = s->hit; 2935 2936 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2937 2938 /* dup the cipher_list and cipher_list_by_id stacks */ 2939 if (s->cipher_list != NULL) { 2940 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2941 goto err; 2942 } 2943 if (s->cipher_list_by_id != NULL) 2944 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2945 == NULL) 2946 goto err; 2947 2948 /* Dup the client_CA list */ 2949 if (s->client_CA != NULL) { 2950 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) 2951 goto err; 2952 ret->client_CA = sk; 2953 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2954 xn = sk_X509_NAME_value(sk, i); 2955 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) { 2956 X509_NAME_free(xn); 2957 goto err; 2958 } 2959 } 2960 } 2961 2962 if (0) { 2963 err: 2964 if (ret != NULL) 2965 SSL_free(ret); 2966 ret = NULL; 2967 } 2968 return (ret); 2969 } 2970 2971 void ssl_clear_cipher_ctx(SSL *s) 2972 { 2973 if (s->enc_read_ctx != NULL) { 2974 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2975 OPENSSL_free(s->enc_read_ctx); 2976 s->enc_read_ctx = NULL; 2977 } 2978 if (s->enc_write_ctx != NULL) { 2979 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2980 OPENSSL_free(s->enc_write_ctx); 2981 s->enc_write_ctx = NULL; 2982 } 2983 #ifndef OPENSSL_NO_COMP 2984 if (s->expand != NULL) { 2985 COMP_CTX_free(s->expand); 2986 s->expand = NULL; 2987 } 2988 if (s->compress != NULL) { 2989 COMP_CTX_free(s->compress); 2990 s->compress = NULL; 2991 } 2992 #endif 2993 } 2994 2995 X509 *SSL_get_certificate(const SSL *s) 2996 { 2997 if (s->cert != NULL) 2998 return (s->cert->key->x509); 2999 else 3000 return (NULL); 3001 } 3002 3003 EVP_PKEY *SSL_get_privatekey(const SSL *s) 3004 { 3005 if (s->cert != NULL) 3006 return (s->cert->key->privatekey); 3007 else 3008 return (NULL); 3009 } 3010 3011 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx) 3012 { 3013 if (ctx->cert != NULL) 3014 return ctx->cert->key->x509; 3015 else 3016 return NULL; 3017 } 3018 3019 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx) 3020 { 3021 if (ctx->cert != NULL) 3022 return ctx->cert->key->privatekey; 3023 else 3024 return NULL; 3025 } 3026 3027 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 3028 { 3029 if ((s->session != NULL) && (s->session->cipher != NULL)) 3030 return (s->session->cipher); 3031 return (NULL); 3032 } 3033 3034 #ifdef OPENSSL_NO_COMP 3035 const void *SSL_get_current_compression(SSL *s) 3036 { 3037 return NULL; 3038 } 3039 3040 const void *SSL_get_current_expansion(SSL *s) 3041 { 3042 return NULL; 3043 } 3044 #else 3045 3046 const COMP_METHOD *SSL_get_current_compression(SSL *s) 3047 { 3048 if (s->compress != NULL) 3049 return (s->compress->meth); 3050 return (NULL); 3051 } 3052 3053 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 3054 { 3055 if (s->expand != NULL) 3056 return (s->expand->meth); 3057 return (NULL); 3058 } 3059 #endif 3060 3061 int ssl_init_wbio_buffer(SSL *s, int push) 3062 { 3063 BIO *bbio; 3064 3065 if (s->bbio == NULL) { 3066 bbio = BIO_new(BIO_f_buffer()); 3067 if (bbio == NULL) 3068 return (0); 3069 s->bbio = bbio; 3070 } else { 3071 bbio = s->bbio; 3072 if (s->bbio == s->wbio) 3073 s->wbio = BIO_pop(s->wbio); 3074 } 3075 (void)BIO_reset(bbio); 3076 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 3077 if (!BIO_set_read_buffer_size(bbio, 1)) { 3078 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB); 3079 return (0); 3080 } 3081 if (push) { 3082 if (s->wbio != bbio) 3083 s->wbio = BIO_push(bbio, s->wbio); 3084 } else { 3085 if (s->wbio == bbio) 3086 s->wbio = BIO_pop(bbio); 3087 } 3088 return (1); 3089 } 3090 3091 void ssl_free_wbio_buffer(SSL *s) 3092 { 3093 if (s->bbio == NULL) 3094 return; 3095 3096 if (s->bbio == s->wbio) { 3097 /* remove buffering */ 3098 s->wbio = BIO_pop(s->wbio); 3099 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids 3100 * adding one more preprocessor symbol */ 3101 assert(s->wbio != NULL); 3102 #endif 3103 } 3104 BIO_free(s->bbio); 3105 s->bbio = NULL; 3106 } 3107 3108 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 3109 { 3110 ctx->quiet_shutdown = mode; 3111 } 3112 3113 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 3114 { 3115 return (ctx->quiet_shutdown); 3116 } 3117 3118 void SSL_set_quiet_shutdown(SSL *s, int mode) 3119 { 3120 s->quiet_shutdown = mode; 3121 } 3122 3123 int SSL_get_quiet_shutdown(const SSL *s) 3124 { 3125 return (s->quiet_shutdown); 3126 } 3127 3128 void SSL_set_shutdown(SSL *s, int mode) 3129 { 3130 s->shutdown = mode; 3131 } 3132 3133 int SSL_get_shutdown(const SSL *s) 3134 { 3135 return (s->shutdown); 3136 } 3137 3138 int SSL_version(const SSL *s) 3139 { 3140 return (s->version); 3141 } 3142 3143 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 3144 { 3145 return (ssl->ctx); 3146 } 3147 3148 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx) 3149 { 3150 CERT *ocert = ssl->cert; 3151 if (ssl->ctx == ctx) 3152 return ssl->ctx; 3153 #ifndef OPENSSL_NO_TLSEXT 3154 if (ctx == NULL) 3155 ctx = ssl->initial_ctx; 3156 #endif 3157 ssl->cert = ssl_cert_dup(ctx->cert); 3158 if (ocert) { 3159 /* Preserve any already negotiated parameters */ 3160 if (ssl->server) { 3161 ssl->cert->peer_sigalgs = ocert->peer_sigalgs; 3162 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen; 3163 ocert->peer_sigalgs = NULL; 3164 ssl->cert->ciphers_raw = ocert->ciphers_raw; 3165 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen; 3166 ocert->ciphers_raw = NULL; 3167 } 3168 ssl_cert_free(ocert); 3169 } 3170 3171 /* 3172 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 3173 * so setter APIs must prevent invalid lengths from entering the system. 3174 */ 3175 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 3176 3177 /* 3178 * If the session ID context matches that of the parent SSL_CTX, 3179 * inherit it from the new SSL_CTX as well. If however the context does 3180 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 3181 * leave it unchanged. 3182 */ 3183 if ((ssl->ctx != NULL) && 3184 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 3185 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) { 3186 ssl->sid_ctx_length = ctx->sid_ctx_length; 3187 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3188 } 3189 3190 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 3191 if (ssl->ctx != NULL) 3192 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3193 ssl->ctx = ctx; 3194 3195 return (ssl->ctx); 3196 } 3197 3198 #ifndef OPENSSL_NO_STDIO 3199 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3200 { 3201 return (X509_STORE_set_default_paths(ctx->cert_store)); 3202 } 3203 3204 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3205 const char *CApath) 3206 { 3207 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 3208 } 3209 #endif 3210 3211 void SSL_set_info_callback(SSL *ssl, 3212 void (*cb) (const SSL *ssl, int type, int val)) 3213 { 3214 ssl->info_callback = cb; 3215 } 3216 3217 /* 3218 * One compiler (Diab DCC) doesn't like argument names in returned function 3219 * pointer. 3220 */ 3221 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ , 3222 int /* type */ , 3223 int /* val */ ) { 3224 return ssl->info_callback; 3225 } 3226 3227 int SSL_state(const SSL *ssl) 3228 { 3229 return (ssl->state); 3230 } 3231 3232 void SSL_set_state(SSL *ssl, int state) 3233 { 3234 ssl->state = state; 3235 } 3236 3237 void SSL_set_verify_result(SSL *ssl, long arg) 3238 { 3239 ssl->verify_result = arg; 3240 } 3241 3242 long SSL_get_verify_result(const SSL *ssl) 3243 { 3244 return (ssl->verify_result); 3245 } 3246 3247 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3248 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3249 { 3250 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3251 new_func, dup_func, free_func); 3252 } 3253 3254 int SSL_set_ex_data(SSL *s, int idx, void *arg) 3255 { 3256 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3257 } 3258 3259 void *SSL_get_ex_data(const SSL *s, int idx) 3260 { 3261 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3262 } 3263 3264 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3265 CRYPTO_EX_dup *dup_func, 3266 CRYPTO_EX_free *free_func) 3267 { 3268 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3269 new_func, dup_func, free_func); 3270 } 3271 3272 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3273 { 3274 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3275 } 3276 3277 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3278 { 3279 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3280 } 3281 3282 int ssl_ok(SSL *s) 3283 { 3284 return (1); 3285 } 3286 3287 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3288 { 3289 return (ctx->cert_store); 3290 } 3291 3292 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3293 { 3294 if (ctx->cert_store != NULL) 3295 X509_STORE_free(ctx->cert_store); 3296 ctx->cert_store = store; 3297 } 3298 3299 int SSL_want(const SSL *s) 3300 { 3301 return (s->rwstate); 3302 } 3303 3304 /** 3305 * \brief Set the callback for generating temporary RSA keys. 3306 * \param ctx the SSL context. 3307 * \param cb the callback 3308 */ 3309 3310 #ifndef OPENSSL_NO_RSA 3311 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl, 3312 int is_export, 3313 int keylength)) 3314 { 3315 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3316 } 3317 3318 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl, 3319 int is_export, 3320 int keylength)) 3321 { 3322 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb); 3323 } 3324 #endif 3325 3326 #ifdef DOXYGEN 3327 /** 3328 * \brief The RSA temporary key callback function. 3329 * \param ssl the SSL session. 3330 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3331 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3332 * of the required key in bits. 3333 * \return the temporary RSA key. 3334 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3335 */ 3336 3337 RSA *cb(SSL *ssl, int is_export, int keylength) 3338 { 3339 } 3340 #endif 3341 3342 /** 3343 * \brief Set the callback for generating temporary DH keys. 3344 * \param ctx the SSL context. 3345 * \param dh the callback 3346 */ 3347 3348 #ifndef OPENSSL_NO_DH 3349 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, 3350 DH *(*dh) (SSL *ssl, int is_export, 3351 int keylength)) 3352 { 3353 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3354 } 3355 3356 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export, 3357 int keylength)) 3358 { 3359 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh); 3360 } 3361 #endif 3362 3363 #ifndef OPENSSL_NO_ECDH 3364 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, 3365 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3366 int keylength)) 3367 { 3368 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3369 (void (*)(void))ecdh); 3370 } 3371 3372 void SSL_set_tmp_ecdh_callback(SSL *ssl, 3373 EC_KEY *(*ecdh) (SSL *ssl, int is_export, 3374 int keylength)) 3375 { 3376 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh); 3377 } 3378 #endif 3379 3380 #ifndef OPENSSL_NO_PSK 3381 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3382 { 3383 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3384 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3385 SSL_R_DATA_LENGTH_TOO_LONG); 3386 return 0; 3387 } 3388 if (ctx->psk_identity_hint != NULL) 3389 OPENSSL_free(ctx->psk_identity_hint); 3390 if (identity_hint != NULL) { 3391 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3392 if (ctx->psk_identity_hint == NULL) 3393 return 0; 3394 } else 3395 ctx->psk_identity_hint = NULL; 3396 return 1; 3397 } 3398 3399 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3400 { 3401 if (s == NULL) 3402 return 0; 3403 3404 if (s->session == NULL) 3405 return 1; /* session not created yet, ignored */ 3406 3407 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) { 3408 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3409 return 0; 3410 } 3411 if (s->session->psk_identity_hint != NULL) 3412 OPENSSL_free(s->session->psk_identity_hint); 3413 if (identity_hint != NULL) { 3414 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3415 if (s->session->psk_identity_hint == NULL) 3416 return 0; 3417 } else 3418 s->session->psk_identity_hint = NULL; 3419 return 1; 3420 } 3421 3422 const char *SSL_get_psk_identity_hint(const SSL *s) 3423 { 3424 if (s == NULL || s->session == NULL) 3425 return NULL; 3426 return (s->session->psk_identity_hint); 3427 } 3428 3429 const char *SSL_get_psk_identity(const SSL *s) 3430 { 3431 if (s == NULL || s->session == NULL) 3432 return NULL; 3433 return (s->session->psk_identity); 3434 } 3435 3436 void SSL_set_psk_client_callback(SSL *s, 3437 unsigned int (*cb) (SSL *ssl, 3438 const char *hint, 3439 char *identity, 3440 unsigned int 3441 max_identity_len, 3442 unsigned char *psk, 3443 unsigned int 3444 max_psk_len)) 3445 { 3446 s->psk_client_callback = cb; 3447 } 3448 3449 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3450 unsigned int (*cb) (SSL *ssl, 3451 const char *hint, 3452 char *identity, 3453 unsigned int 3454 max_identity_len, 3455 unsigned char *psk, 3456 unsigned int 3457 max_psk_len)) 3458 { 3459 ctx->psk_client_callback = cb; 3460 } 3461 3462 void SSL_set_psk_server_callback(SSL *s, 3463 unsigned int (*cb) (SSL *ssl, 3464 const char *identity, 3465 unsigned char *psk, 3466 unsigned int 3467 max_psk_len)) 3468 { 3469 s->psk_server_callback = cb; 3470 } 3471 3472 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3473 unsigned int (*cb) (SSL *ssl, 3474 const char *identity, 3475 unsigned char *psk, 3476 unsigned int 3477 max_psk_len)) 3478 { 3479 ctx->psk_server_callback = cb; 3480 } 3481 #endif 3482 3483 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, 3484 void (*cb) (int write_p, int version, 3485 int content_type, const void *buf, 3486 size_t len, SSL *ssl, void *arg)) 3487 { 3488 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3489 } 3490 3491 void SSL_set_msg_callback(SSL *ssl, 3492 void (*cb) (int write_p, int version, 3493 int content_type, const void *buf, 3494 size_t len, SSL *ssl, void *arg)) 3495 { 3496 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3497 } 3498 3499 /* 3500 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3501 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any. 3502 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly 3503 * allocated ctx; 3504 */ 3505 3506 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3507 { 3508 ssl_clear_hash_ctx(hash); 3509 *hash = EVP_MD_CTX_create(); 3510 if (md) 3511 EVP_DigestInit_ex(*hash, md, NULL); 3512 return *hash; 3513 } 3514 3515 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3516 { 3517 3518 if (*hash) 3519 EVP_MD_CTX_destroy(*hash); 3520 *hash = NULL; 3521 } 3522 3523 void SSL_set_debug(SSL *s, int debug) 3524 { 3525 s->debug = debug; 3526 } 3527 3528 int SSL_cache_hit(SSL *s) 3529 { 3530 return s->hit; 3531 } 3532 3533 int SSL_is_server(SSL *s) 3534 { 3535 return s->server; 3536 } 3537 3538 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3539 # include "../crypto/bio/bss_file.c" 3540 #endif 3541 3542 IMPLEMENT_STACK_OF(SSL_CIPHER) 3543 IMPLEMENT_STACK_OF(SSL_COMP) 3544 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 3545