1 /* $OpenBSD: ssl_lib.c,v 1.78 2014/07/12 22:33:39 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <stdio.h> 144 #include "ssl_locl.h" 145 #include <openssl/objects.h> 146 #include <openssl/lhash.h> 147 #include <openssl/x509v3.h> 148 #include <openssl/rand.h> 149 #include <openssl/ocsp.h> 150 #include <openssl/dh.h> 151 #ifndef OPENSSL_NO_ENGINE 152 #include <openssl/engine.h> 153 #endif 154 155 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 156 157 SSL3_ENC_METHOD ssl3_undef_enc_method = { 158 /* 159 * Evil casts, but these functions are only called if there's a 160 * library bug. 161 */ 162 .enc = (int (*)(SSL *, int))ssl_undefined_function, 163 .mac = (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 164 .setup_key_block = ssl_undefined_function, 165 .generate_master_secret = (int (*)(SSL *, unsigned char *, 166 unsigned char *, int))ssl_undefined_function, 167 .change_cipher_state = (int (*)(SSL*, int))ssl_undefined_function, 168 .final_finish_mac = (int (*)(SSL *, const char*, int, 169 unsigned char *))ssl_undefined_function, 170 .finish_mac_length = 0, 171 .cert_verify_mac = (int (*)(SSL *, int, 172 unsigned char *))ssl_undefined_function, 173 .client_finished_label = NULL, 174 .client_finished_label_len = 0, 175 .server_finished_label = NULL, 176 .server_finished_label_len = 0, 177 .alert_value = (int (*)(int))ssl_undefined_function, 178 .export_keying_material = (int (*)(SSL *, unsigned char *, size_t, 179 const char *, size_t, const unsigned char *, size_t, 180 int use_context))ssl_undefined_function, 181 .enc_flags = 0, 182 }; 183 184 int 185 SSL_clear(SSL *s) 186 { 187 if (s->method == NULL) { 188 SSLerr(SSL_F_SSL_CLEAR, 189 SSL_R_NO_METHOD_SPECIFIED); 190 return (0); 191 } 192 193 if (ssl_clear_bad_session(s)) { 194 SSL_SESSION_free(s->session); 195 s->session = NULL; 196 } 197 198 s->error = 0; 199 s->hit = 0; 200 s->shutdown = 0; 201 202 if (s->renegotiate) { 203 SSLerr(SSL_F_SSL_CLEAR, 204 ERR_R_INTERNAL_ERROR); 205 return (0); 206 } 207 208 s->type = 0; 209 210 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 211 212 s->version = s->method->version; 213 s->client_version = s->version; 214 s->rwstate = SSL_NOTHING; 215 s->rstate = SSL_ST_READ_HEADER; 216 217 if (s->init_buf != NULL) { 218 BUF_MEM_free(s->init_buf); 219 s->init_buf = NULL; 220 } 221 222 ssl_clear_cipher_ctx(s); 223 ssl_clear_hash_ctx(&s->read_hash); 224 ssl_clear_hash_ctx(&s->write_hash); 225 226 s->first_packet = 0; 227 228 /* 229 * Check to see if we were changed into a different method, if 230 * so, revert back if we are not doing session-id reuse. 231 */ 232 if (!s->in_handshake && (s->session == NULL) && 233 (s->method != s->ctx->method)) { 234 s->method->ssl_free(s); 235 s->method = s->ctx->method; 236 if (!s->method->ssl_new(s)) 237 return (0); 238 } else 239 s->method->ssl_clear(s); 240 return (1); 241 } 242 243 /* Used to change an SSL_CTXs default SSL method type */ 244 int 245 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 246 { 247 STACK_OF(SSL_CIPHER) *sk; 248 249 ctx->method = meth; 250 251 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 252 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 253 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 254 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 255 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 256 return (0); 257 } 258 return (1); 259 } 260 261 SSL * 262 SSL_new(SSL_CTX *ctx) 263 { 264 SSL *s; 265 266 if (ctx == NULL) { 267 SSLerr(SSL_F_SSL_NEW, 268 SSL_R_NULL_SSL_CTX); 269 return (NULL); 270 } 271 if (ctx->method == NULL) { 272 SSLerr(SSL_F_SSL_NEW, 273 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 274 return (NULL); 275 } 276 277 s = calloc(1, sizeof(SSL)); 278 if (s == NULL) 279 goto err; 280 281 282 s->options = ctx->options; 283 s->mode = ctx->mode; 284 s->max_cert_list = ctx->max_cert_list; 285 286 if (ctx->cert != NULL) { 287 /* 288 * Earlier library versions used to copy the pointer to 289 * the CERT, not its contents; only when setting new 290 * parameters for the per-SSL copy, ssl_cert_new would be 291 * called (and the direct reference to the per-SSL_CTX 292 * settings would be lost, but those still were indirectly 293 * accessed for various purposes, and for that reason they 294 * used to be known as s->ctx->default_cert). 295 * Now we don't look at the SSL_CTX's CERT after having 296 * duplicated it once. 297 */ 298 s->cert = ssl_cert_dup(ctx->cert); 299 if (s->cert == NULL) 300 goto err; 301 } else 302 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 303 304 s->read_ahead = ctx->read_ahead; 305 s->msg_callback = ctx->msg_callback; 306 s->msg_callback_arg = ctx->msg_callback_arg; 307 s->verify_mode = ctx->verify_mode; 308 s->sid_ctx_length = ctx->sid_ctx_length; 309 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 310 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 311 s->verify_callback = ctx->default_verify_callback; 312 s->generate_session_id = ctx->generate_session_id; 313 314 s->param = X509_VERIFY_PARAM_new(); 315 if (!s->param) 316 goto err; 317 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 318 s->quiet_shutdown = ctx->quiet_shutdown; 319 s->max_send_fragment = ctx->max_send_fragment; 320 321 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 322 s->ctx = ctx; 323 s->tlsext_debug_cb = 0; 324 s->tlsext_debug_arg = NULL; 325 s->tlsext_ticket_expected = 0; 326 s->tlsext_status_type = -1; 327 s->tlsext_status_expected = 0; 328 s->tlsext_ocsp_ids = NULL; 329 s->tlsext_ocsp_exts = NULL; 330 s->tlsext_ocsp_resp = NULL; 331 s->tlsext_ocsp_resplen = -1; 332 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 333 s->initial_ctx = ctx; 334 # ifndef OPENSSL_NO_NEXTPROTONEG 335 s->next_proto_negotiated = NULL; 336 # endif 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 342 if (!s->method->ssl_new(s)) 343 goto err; 344 345 s->references = 1; 346 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 347 348 SSL_clear(s); 349 350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 351 352 353 return (s); 354 err: 355 if (s != NULL) { 356 if (s->cert != NULL) 357 ssl_cert_free(s->cert); 358 SSL_CTX_free(s->ctx); /* decrement reference count */ 359 free(s); 360 } 361 SSLerr(SSL_F_SSL_NEW, 362 ERR_R_MALLOC_FAILURE); 363 return (NULL); 364 } 365 366 int 367 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 368 unsigned int sid_ctx_len) 369 { 370 if (sid_ctx_len > sizeof ctx->sid_ctx) { 371 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 372 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 373 return (0); 374 } 375 ctx->sid_ctx_length = sid_ctx_len; 376 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 377 378 return (1); 379 } 380 381 int 382 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 383 unsigned int sid_ctx_len) 384 { 385 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 386 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 387 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 388 return (0); 389 } 390 ssl->sid_ctx_length = sid_ctx_len; 391 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 392 393 return (1); 394 } 395 396 int 397 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 398 { 399 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 400 ctx->generate_session_id = cb; 401 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 402 return (1); 403 } 404 405 int 406 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 407 { 408 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 409 ssl->generate_session_id = cb; 410 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 411 return (1); 412 } 413 414 int 415 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 416 unsigned int id_len) 417 { 418 /* 419 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 420 * shows how we can "construct" a session to give us the desired 421 * check - ie. to find if there's a session in the hash table 422 * that would conflict with any new session built out of this 423 * id/id_len and the ssl_version in use by this SSL. 424 */ 425 SSL_SESSION r, *p; 426 427 if (id_len > sizeof r.session_id) 428 return (0); 429 430 r.ssl_version = ssl->version; 431 r.session_id_length = id_len; 432 memcpy(r.session_id, id, id_len); 433 434 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 435 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 436 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 437 return (p != NULL); 438 } 439 440 int 441 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 442 { 443 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 444 } 445 446 int 447 SSL_set_purpose(SSL *s, int purpose) 448 { 449 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 450 } 451 452 int 453 SSL_CTX_set_trust(SSL_CTX *s, int trust) 454 { 455 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 456 } 457 458 int 459 SSL_set_trust(SSL *s, int trust) 460 { 461 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 462 } 463 464 int 465 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 466 { 467 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 468 } 469 470 int 471 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 472 { 473 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 474 } 475 476 void 477 SSL_free(SSL *s) 478 { 479 int i; 480 481 if (s == NULL) 482 return; 483 484 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 485 if (i > 0) 486 return; 487 488 if (s->param) 489 X509_VERIFY_PARAM_free(s->param); 490 491 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 492 493 if (s->bbio != NULL) { 494 /* If the buffering BIO is in place, pop it off */ 495 if (s->bbio == s->wbio) { 496 s->wbio = BIO_pop(s->wbio); 497 } 498 BIO_free(s->bbio); 499 s->bbio = NULL; 500 } 501 if (s->rbio != NULL) 502 BIO_free_all(s->rbio); 503 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 504 BIO_free_all(s->wbio); 505 506 if (s->init_buf != NULL) 507 BUF_MEM_free(s->init_buf); 508 509 /* add extra stuff */ 510 if (s->cipher_list != NULL) 511 sk_SSL_CIPHER_free(s->cipher_list); 512 if (s->cipher_list_by_id != NULL) 513 sk_SSL_CIPHER_free(s->cipher_list_by_id); 514 515 /* Make the next call work :-) */ 516 if (s->session != NULL) { 517 ssl_clear_bad_session(s); 518 SSL_SESSION_free(s->session); 519 } 520 521 ssl_clear_cipher_ctx(s); 522 ssl_clear_hash_ctx(&s->read_hash); 523 ssl_clear_hash_ctx(&s->write_hash); 524 525 if (s->cert != NULL) 526 ssl_cert_free(s->cert); 527 /* Free up if allocated */ 528 529 free(s->tlsext_hostname); 530 SSL_CTX_free(s->initial_ctx); 531 free(s->tlsext_ecpointformatlist); 532 free(s->tlsext_ellipticcurvelist); 533 if (s->tlsext_ocsp_exts) 534 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 535 X509_EXTENSION_free); 536 if (s->tlsext_ocsp_ids) 537 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 538 free(s->tlsext_ocsp_resp); 539 540 if (s->client_CA != NULL) 541 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 542 543 if (s->method != NULL) 544 s->method->ssl_free(s); 545 546 SSL_CTX_free(s->ctx); 547 548 549 #ifndef OPENSSL_NO_NEXTPROTONEG 550 free(s->next_proto_negotiated); 551 #endif 552 553 #ifndef OPENSSL_NO_SRTP 554 if (s->srtp_profiles) 555 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 556 #endif 557 558 free(s); 559 } 560 561 void 562 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 563 { 564 /* If the output buffering BIO is still in place, remove it */ 565 if (s->bbio != NULL) { 566 if (s->wbio == s->bbio) { 567 s->wbio = s->wbio->next_bio; 568 s->bbio->next_bio = NULL; 569 } 570 } 571 if ((s->rbio != NULL) && (s->rbio != rbio)) 572 BIO_free_all(s->rbio); 573 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 574 BIO_free_all(s->wbio); 575 s->rbio = rbio; 576 s->wbio = wbio; 577 } 578 579 BIO * 580 SSL_get_rbio(const SSL *s) 581 { 582 return (s->rbio); 583 } 584 585 BIO * 586 SSL_get_wbio(const SSL *s) 587 { 588 return (s->wbio); 589 } 590 591 int 592 SSL_get_fd(const SSL *s) 593 { 594 return (SSL_get_rfd(s)); 595 } 596 597 int 598 SSL_get_rfd(const SSL *s) 599 { 600 int ret = -1; 601 BIO *b, *r; 602 603 b = SSL_get_rbio(s); 604 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 605 if (r != NULL) 606 BIO_get_fd(r, &ret); 607 return (ret); 608 } 609 610 int 611 SSL_get_wfd(const SSL *s) 612 { 613 int ret = -1; 614 BIO *b, *r; 615 616 b = SSL_get_wbio(s); 617 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 618 if (r != NULL) 619 BIO_get_fd(r, &ret); 620 return (ret); 621 } 622 623 int 624 SSL_set_fd(SSL *s, int fd) 625 { 626 int ret = 0; 627 BIO *bio = NULL; 628 629 bio = BIO_new(BIO_s_socket()); 630 631 if (bio == NULL) { 632 SSLerr(SSL_F_SSL_SET_FD, 633 ERR_R_BUF_LIB); 634 goto err; 635 } 636 BIO_set_fd(bio, fd, BIO_NOCLOSE); 637 SSL_set_bio(s, bio, bio); 638 ret = 1; 639 err: 640 return (ret); 641 } 642 643 int 644 SSL_set_wfd(SSL *s, int fd) 645 { 646 int ret = 0; 647 BIO *bio = NULL; 648 649 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 650 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 651 bio = BIO_new(BIO_s_socket()); 652 653 if (bio == NULL) { 654 SSLerr(SSL_F_SSL_SET_WFD, 655 ERR_R_BUF_LIB); 656 goto err; 657 } 658 BIO_set_fd(bio, fd, BIO_NOCLOSE); 659 SSL_set_bio(s, SSL_get_rbio(s), bio); 660 } else 661 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 662 ret = 1; 663 err: 664 return (ret); 665 } 666 667 int 668 SSL_set_rfd(SSL *s, int fd) 669 { 670 int ret = 0; 671 BIO *bio = NULL; 672 673 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 674 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 675 bio = BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) { 678 SSLerr(SSL_F_SSL_SET_RFD, 679 ERR_R_BUF_LIB); 680 goto err; 681 } 682 BIO_set_fd(bio, fd, BIO_NOCLOSE); 683 SSL_set_bio(s, bio, SSL_get_wbio(s)); 684 } else 685 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 686 ret = 1; 687 err: 688 return (ret); 689 } 690 691 692 /* return length of latest Finished message we sent, copy to 'buf' */ 693 size_t 694 SSL_get_finished(const SSL *s, void *buf, size_t count) 695 { 696 size_t ret = 0; 697 698 if (s->s3 != NULL) { 699 ret = s->s3->tmp.finish_md_len; 700 if (count > ret) 701 count = ret; 702 memcpy(buf, s->s3->tmp.finish_md, count); 703 } 704 return (ret); 705 } 706 707 /* return length of latest Finished message we expected, copy to 'buf' */ 708 size_t 709 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 710 { 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = s->s3->tmp.peer_finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, s->s3->tmp.peer_finish_md, count); 718 } 719 return (ret); 720 } 721 722 723 int 724 SSL_get_verify_mode(const SSL *s) 725 { 726 return (s->verify_mode); 727 } 728 729 int 730 SSL_get_verify_depth(const SSL *s) 731 { 732 return (X509_VERIFY_PARAM_get_depth(s->param)); 733 } 734 735 int 736 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 737 { 738 return (s->verify_callback); 739 } 740 741 int 742 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 743 { 744 return (ctx->verify_mode); 745 } 746 747 int 748 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 749 { 750 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 751 } 752 753 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 754 { 755 return (ctx->default_verify_callback); 756 } 757 758 void 759 SSL_set_verify(SSL *s, int mode, 760 int (*callback)(int ok, X509_STORE_CTX *ctx)) 761 { 762 s->verify_mode = mode; 763 if (callback != NULL) 764 s->verify_callback = callback; 765 } 766 767 void 768 SSL_set_verify_depth(SSL *s, int depth) 769 { 770 X509_VERIFY_PARAM_set_depth(s->param, depth); 771 } 772 773 void 774 SSL_set_read_ahead(SSL *s, int yes) 775 { 776 s->read_ahead = yes; 777 } 778 779 int 780 SSL_get_read_ahead(const SSL *s) 781 { 782 return (s->read_ahead); 783 } 784 785 int 786 SSL_pending(const SSL *s) 787 { 788 /* 789 * SSL_pending cannot work properly if read-ahead is enabled 790 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 791 * and it is impossible to fix since SSL_pending cannot report 792 * errors that may be observed while scanning the new data. 793 * (Note that SSL_pending() is often used as a boolean value, 794 * so we'd better not return -1.) 795 */ 796 return (s->method->ssl_pending(s)); 797 } 798 799 X509 * 800 SSL_get_peer_certificate(const SSL *s) 801 { 802 X509 *r; 803 804 if ((s == NULL) || (s->session == NULL)) 805 r = NULL; 806 else 807 r = s->session->peer; 808 809 if (r == NULL) 810 return (r); 811 812 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 813 814 return (r); 815 } 816 817 STACK_OF(X509) * 818 SSL_get_peer_cert_chain(const SSL *s) 819 { 820 STACK_OF(X509) *r; 821 822 if ((s == NULL) || (s->session == NULL) || 823 (s->session->sess_cert == NULL)) 824 r = NULL; 825 else 826 r = s->session->sess_cert->cert_chain; 827 828 /* 829 * If we are a client, cert_chain includes the peer's own 830 * certificate; 831 * if we are a server, it does not. 832 */ 833 return (r); 834 } 835 836 /* 837 * Now in theory, since the calling process own 't' it should be safe to 838 * modify. We need to be able to read f without being hassled 839 */ 840 void 841 SSL_copy_session_id(SSL *t, const SSL *f) 842 { 843 CERT *tmp; 844 845 /* Do we need to to SSL locking? */ 846 SSL_set_session(t, SSL_get_session(f)); 847 848 /* 849 * What if we are setup as SSLv2 but want to talk SSLv3 or 850 * vice-versa. 851 */ 852 if (t->method != f->method) { 853 t->method->ssl_free(t); /* cleanup current */ 854 t->method=f->method; /* change method */ 855 t->method->ssl_new(t); /* setup new */ 856 } 857 858 tmp = t->cert; 859 if (f->cert != NULL) { 860 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 861 t->cert = f->cert; 862 } else 863 t->cert = NULL; 864 if (tmp != NULL) 865 ssl_cert_free(tmp); 866 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 867 } 868 869 /* Fix this so it checks all the valid key/cert options */ 870 int 871 SSL_CTX_check_private_key(const SSL_CTX *ctx) 872 { 873 if ((ctx == NULL) || (ctx->cert == NULL) || 874 (ctx->cert->key->x509 == NULL)) { 875 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 876 SSL_R_NO_CERTIFICATE_ASSIGNED); 877 return (0); 878 } 879 if (ctx->cert->key->privatekey == NULL) { 880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 881 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 882 return (0); 883 } 884 return (X509_check_private_key(ctx->cert->key->x509, 885 ctx->cert->key->privatekey)); 886 } 887 888 /* Fix this function so that it takes an optional type parameter */ 889 int 890 SSL_check_private_key(const SSL *ssl) 891 { 892 if (ssl == NULL) { 893 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 894 ERR_R_PASSED_NULL_PARAMETER); 895 return (0); 896 } 897 if (ssl->cert == NULL) { 898 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 899 SSL_R_NO_CERTIFICATE_ASSIGNED); 900 return (0); 901 } 902 if (ssl->cert->key->x509 == NULL) { 903 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 904 SSL_R_NO_CERTIFICATE_ASSIGNED); 905 return (0); 906 } 907 if (ssl->cert->key->privatekey == NULL) { 908 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 909 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 910 return (0); 911 } 912 return (X509_check_private_key(ssl->cert->key->x509, 913 ssl->cert->key->privatekey)); 914 } 915 916 int 917 SSL_accept(SSL *s) 918 { 919 if (s->handshake_func == 0) 920 SSL_set_accept_state(s); /* Not properly initialized yet */ 921 922 return (s->method->ssl_accept(s)); 923 } 924 925 int 926 SSL_connect(SSL *s) 927 { 928 if (s->handshake_func == 0) 929 SSL_set_connect_state(s); /* Not properly initialized yet */ 930 931 return (s->method->ssl_connect(s)); 932 } 933 934 long 935 SSL_get_default_timeout(const SSL *s) 936 { 937 return (s->method->get_timeout()); 938 } 939 940 int 941 SSL_read(SSL *s, void *buf, int num) 942 { 943 if (s->handshake_func == 0) { 944 SSLerr(SSL_F_SSL_READ, 945 SSL_R_UNINITIALIZED); 946 return (-1); 947 } 948 949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 950 s->rwstate = SSL_NOTHING; 951 return (0); 952 } 953 return (s->method->ssl_read(s, buf, num)); 954 } 955 956 int 957 SSL_peek(SSL *s, void *buf, int num) 958 { 959 if (s->handshake_func == 0) { 960 SSLerr(SSL_F_SSL_PEEK, 961 SSL_R_UNINITIALIZED); 962 return (-1); 963 } 964 965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 966 return (0); 967 } 968 return (s->method->ssl_peek(s, buf, num)); 969 } 970 971 int 972 SSL_write(SSL *s, const void *buf, int num) 973 { 974 if (s->handshake_func == 0) { 975 SSLerr(SSL_F_SSL_WRITE, 976 SSL_R_UNINITIALIZED); 977 return (-1); 978 } 979 980 if (s->shutdown & SSL_SENT_SHUTDOWN) { 981 s->rwstate = SSL_NOTHING; 982 SSLerr(SSL_F_SSL_WRITE, 983 SSL_R_PROTOCOL_IS_SHUTDOWN); 984 return (-1); 985 } 986 return (s->method->ssl_write(s, buf, num)); 987 } 988 989 int 990 SSL_shutdown(SSL *s) 991 { 992 /* 993 * Note that this function behaves differently from what one might 994 * expect. Return values are 0 for no success (yet), 995 * 1 for success; but calling it once is usually not enough, 996 * even if blocking I/O is used (see ssl3_shutdown). 997 */ 998 999 if (s->handshake_func == 0) { 1000 SSLerr(SSL_F_SSL_SHUTDOWN, 1001 SSL_R_UNINITIALIZED); 1002 return (-1); 1003 } 1004 1005 if ((s != NULL) && !SSL_in_init(s)) 1006 return (s->method->ssl_shutdown(s)); 1007 else 1008 return (1); 1009 } 1010 1011 int 1012 SSL_renegotiate(SSL *s) 1013 { 1014 if (s->renegotiate == 0) 1015 s->renegotiate = 1; 1016 1017 s->new_session = 1; 1018 1019 return (s->method->ssl_renegotiate(s)); 1020 } 1021 1022 int 1023 SSL_renegotiate_abbreviated(SSL *s) 1024 { 1025 if (s->renegotiate == 0) 1026 s->renegotiate = 1; 1027 1028 s->new_session = 0; 1029 1030 return (s->method->ssl_renegotiate(s)); 1031 } 1032 1033 int 1034 SSL_renegotiate_pending(SSL *s) 1035 { 1036 /* 1037 * Becomes true when negotiation is requested; 1038 * false again once a handshake has finished. 1039 */ 1040 return (s->renegotiate != 0); 1041 } 1042 1043 long 1044 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1045 { 1046 long l; 1047 1048 switch (cmd) { 1049 case SSL_CTRL_GET_READ_AHEAD: 1050 return (s->read_ahead); 1051 case SSL_CTRL_SET_READ_AHEAD: 1052 l = s->read_ahead; 1053 s->read_ahead = larg; 1054 return (l); 1055 1056 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1057 s->msg_callback_arg = parg; 1058 return (1); 1059 1060 case SSL_CTRL_OPTIONS: 1061 return (s->options|=larg); 1062 case SSL_CTRL_CLEAR_OPTIONS: 1063 return (s->options&=~larg); 1064 case SSL_CTRL_MODE: 1065 return (s->mode|=larg); 1066 case SSL_CTRL_CLEAR_MODE: 1067 return (s->mode &=~larg); 1068 case SSL_CTRL_GET_MAX_CERT_LIST: 1069 return (s->max_cert_list); 1070 case SSL_CTRL_SET_MAX_CERT_LIST: 1071 l = s->max_cert_list; 1072 s->max_cert_list = larg; 1073 return (l); 1074 case SSL_CTRL_SET_MTU: 1075 #ifndef OPENSSL_NO_DTLS1 1076 if (larg < (long)dtls1_min_mtu()) 1077 return (0); 1078 #endif 1079 if (SSL_IS_DTLS(s)) { 1080 s->d1->mtu = larg; 1081 return (larg); 1082 } 1083 return (0); 1084 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1085 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1086 return (0); 1087 s->max_send_fragment = larg; 1088 return (1); 1089 case SSL_CTRL_GET_RI_SUPPORT: 1090 if (s->s3) 1091 return (s->s3->send_connection_binding); 1092 else return (0); 1093 default: 1094 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1095 } 1096 } 1097 1098 long 1099 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1100 { 1101 switch (cmd) { 1102 case SSL_CTRL_SET_MSG_CALLBACK: 1103 s->msg_callback = (void (*)(int write_p, int version, 1104 int content_type, const void *buf, size_t len, 1105 SSL *ssl, void *arg))(fp); 1106 return (1); 1107 1108 default: 1109 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1110 } 1111 } 1112 1113 LHASH_OF(SSL_SESSION) * 1114 SSL_CTX_sessions(SSL_CTX *ctx) 1115 { 1116 return (ctx->sessions); 1117 } 1118 1119 long 1120 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1121 { 1122 long l; 1123 1124 switch (cmd) { 1125 case SSL_CTRL_GET_READ_AHEAD: 1126 return (ctx->read_ahead); 1127 case SSL_CTRL_SET_READ_AHEAD: 1128 l = ctx->read_ahead; 1129 ctx->read_ahead = larg; 1130 return (l); 1131 1132 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1133 ctx->msg_callback_arg = parg; 1134 return (1); 1135 1136 case SSL_CTRL_GET_MAX_CERT_LIST: 1137 return (ctx->max_cert_list); 1138 case SSL_CTRL_SET_MAX_CERT_LIST: 1139 l = ctx->max_cert_list; 1140 ctx->max_cert_list = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1144 l = ctx->session_cache_size; 1145 ctx->session_cache_size = larg; 1146 return (l); 1147 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1148 return (ctx->session_cache_size); 1149 case SSL_CTRL_SET_SESS_CACHE_MODE: 1150 l = ctx->session_cache_mode; 1151 ctx->session_cache_mode = larg; 1152 return (l); 1153 case SSL_CTRL_GET_SESS_CACHE_MODE: 1154 return (ctx->session_cache_mode); 1155 1156 case SSL_CTRL_SESS_NUMBER: 1157 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1158 case SSL_CTRL_SESS_CONNECT: 1159 return (ctx->stats.sess_connect); 1160 case SSL_CTRL_SESS_CONNECT_GOOD: 1161 return (ctx->stats.sess_connect_good); 1162 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1163 return (ctx->stats.sess_connect_renegotiate); 1164 case SSL_CTRL_SESS_ACCEPT: 1165 return (ctx->stats.sess_accept); 1166 case SSL_CTRL_SESS_ACCEPT_GOOD: 1167 return (ctx->stats.sess_accept_good); 1168 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1169 return (ctx->stats.sess_accept_renegotiate); 1170 case SSL_CTRL_SESS_HIT: 1171 return (ctx->stats.sess_hit); 1172 case SSL_CTRL_SESS_CB_HIT: 1173 return (ctx->stats.sess_cb_hit); 1174 case SSL_CTRL_SESS_MISSES: 1175 return (ctx->stats.sess_miss); 1176 case SSL_CTRL_SESS_TIMEOUTS: 1177 return (ctx->stats.sess_timeout); 1178 case SSL_CTRL_SESS_CACHE_FULL: 1179 return (ctx->stats.sess_cache_full); 1180 case SSL_CTRL_OPTIONS: 1181 return (ctx->options|=larg); 1182 case SSL_CTRL_CLEAR_OPTIONS: 1183 return (ctx->options&=~larg); 1184 case SSL_CTRL_MODE: 1185 return (ctx->mode|=larg); 1186 case SSL_CTRL_CLEAR_MODE: 1187 return (ctx->mode&=~larg); 1188 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1189 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1190 return (0); 1191 ctx->max_send_fragment = larg; 1192 return (1); 1193 default: 1194 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1195 } 1196 } 1197 1198 long 1199 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1200 { 1201 switch (cmd) { 1202 case SSL_CTRL_SET_MSG_CALLBACK: 1203 ctx->msg_callback = (void (*)(int write_p, int version, 1204 int content_type, const void *buf, size_t len, SSL *ssl, 1205 void *arg))(fp); 1206 return (1); 1207 1208 default: 1209 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1210 } 1211 } 1212 1213 int 1214 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1215 { 1216 long l; 1217 1218 l = a->id - b->id; 1219 if (l == 0L) 1220 return (0); 1221 else 1222 return ((l > 0) ? 1:-1); 1223 } 1224 1225 int 1226 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1227 const SSL_CIPHER * const *bp) 1228 { 1229 long l; 1230 1231 l = (*ap)->id - (*bp)->id; 1232 if (l == 0L) 1233 return (0); 1234 else 1235 return ((l > 0) ? 1:-1); 1236 } 1237 1238 /* 1239 * Return a STACK of the ciphers available for the SSL and in order of 1240 * preference. 1241 */ 1242 STACK_OF(SSL_CIPHER) * 1243 SSL_get_ciphers(const SSL *s) 1244 { 1245 if (s != NULL) { 1246 if (s->cipher_list != NULL) { 1247 return (s->cipher_list); 1248 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1249 return (s->ctx->cipher_list); 1250 } 1251 } 1252 return (NULL); 1253 } 1254 1255 /* 1256 * Return a STACK of the ciphers available for the SSL and in order of 1257 * algorithm id. 1258 */ 1259 STACK_OF(SSL_CIPHER) * 1260 ssl_get_ciphers_by_id(SSL *s) 1261 { 1262 if (s != NULL) { 1263 if (s->cipher_list_by_id != NULL) { 1264 return (s->cipher_list_by_id); 1265 } else if ((s->ctx != NULL) && 1266 (s->ctx->cipher_list_by_id != NULL)) { 1267 return (s->ctx->cipher_list_by_id); 1268 } 1269 } 1270 return (NULL); 1271 } 1272 1273 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1274 const char * 1275 SSL_get_cipher_list(const SSL *s, int n) 1276 { 1277 SSL_CIPHER *c; 1278 STACK_OF(SSL_CIPHER) *sk; 1279 1280 if (s == NULL) 1281 return (NULL); 1282 sk = SSL_get_ciphers(s); 1283 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1284 return (NULL); 1285 c = sk_SSL_CIPHER_value(sk, n); 1286 if (c == NULL) 1287 return (NULL); 1288 return (c->name); 1289 } 1290 1291 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1292 int 1293 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1294 { 1295 STACK_OF(SSL_CIPHER) *sk; 1296 1297 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1298 &ctx->cipher_list_by_id, str); 1299 /* 1300 * ssl_create_cipher_list may return an empty stack if it 1301 * was unable to find a cipher matching the given rule string 1302 * (for example if the rule string specifies a cipher which 1303 * has been disabled). This is not an error as far as 1304 * ssl_create_cipher_list is concerned, and hence 1305 * ctx->cipher_list and ctx->cipher_list_by_id has been 1306 * updated. 1307 */ 1308 if (sk == NULL) 1309 return (0); 1310 else if (sk_SSL_CIPHER_num(sk) == 0) { 1311 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1312 SSL_R_NO_CIPHER_MATCH); 1313 return (0); 1314 } 1315 return (1); 1316 } 1317 1318 /* Specify the ciphers to be used by the SSL. */ 1319 int 1320 SSL_set_cipher_list(SSL *s, const char *str) 1321 { 1322 STACK_OF(SSL_CIPHER) *sk; 1323 1324 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1325 &s->cipher_list_by_id, str); 1326 /* see comment in SSL_CTX_set_cipher_list */ 1327 if (sk == NULL) 1328 return (0); 1329 else if (sk_SSL_CIPHER_num(sk) == 0) { 1330 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1331 SSL_R_NO_CIPHER_MATCH); 1332 return (0); 1333 } 1334 return (1); 1335 } 1336 1337 /* works well for SSLv2, not so good for SSLv3 */ 1338 char * 1339 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1340 { 1341 char *end; 1342 STACK_OF(SSL_CIPHER) *sk; 1343 SSL_CIPHER *c; 1344 size_t curlen = 0; 1345 int i; 1346 1347 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1348 (len < 2)) 1349 return (NULL); 1350 1351 sk = s->session->ciphers; 1352 buf[0] = '\0'; 1353 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1354 c = sk_SSL_CIPHER_value(sk, i); 1355 end = buf + curlen; 1356 if (strlcat(buf, c->name, len) >= len || 1357 (curlen = strlcat(buf, ":", len)) >= len) { 1358 /* remove truncated cipher from list */ 1359 *end = '\0'; 1360 break; 1361 } 1362 } 1363 /* remove trailing colon */ 1364 if ((end = strrchr(buf, ':')) != NULL) 1365 *end = '\0'; 1366 return (buf); 1367 } 1368 1369 int 1370 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1371 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1372 { 1373 int i, j = 0; 1374 SSL_CIPHER *c; 1375 unsigned char *q; 1376 1377 if (sk == NULL) 1378 return (0); 1379 q = p; 1380 1381 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1382 c = sk_SSL_CIPHER_value(sk, i); 1383 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1384 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1385 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1386 continue; 1387 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1388 p += j; 1389 } 1390 /* 1391 * If p == q, no ciphers and caller indicates an error. Otherwise 1392 * add SCSV if not renegotiating. 1393 */ 1394 if (p != q && !s->renegotiate) { 1395 static SSL_CIPHER scsv = { 1396 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1397 }; 1398 j = put_cb ? put_cb(&scsv, p) : 1399 ssl_put_cipher_by_char(s, &scsv, p); 1400 p += j; 1401 } 1402 1403 return (p - q); 1404 } 1405 1406 STACK_OF(SSL_CIPHER) * 1407 ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1408 STACK_OF(SSL_CIPHER) **skp) 1409 { 1410 const SSL_CIPHER *c; 1411 STACK_OF(SSL_CIPHER) *sk; 1412 int i, n; 1413 1414 if (s->s3) 1415 s->s3->send_connection_binding = 0; 1416 1417 n = ssl_put_cipher_by_char(s, NULL, NULL); 1418 if ((num % n) != 0) { 1419 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1420 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1421 return (NULL); 1422 } 1423 if ((skp == NULL) || (*skp == NULL)) 1424 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1425 else { 1426 sk= *skp; 1427 sk_SSL_CIPHER_zero(sk); 1428 } 1429 1430 for (i = 0; i < num; i += n) { 1431 /* Check for SCSV */ 1432 if (s->s3 && (n != 3 || !p[0]) && 1433 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1434 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1435 /* SCSV fatal if renegotiating */ 1436 if (s->renegotiate) { 1437 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1438 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1439 ssl3_send_alert(s, SSL3_AL_FATAL, 1440 SSL_AD_HANDSHAKE_FAILURE); 1441 1442 goto err; 1443 } 1444 s->s3->send_connection_binding = 1; 1445 p += n; 1446 continue; 1447 } 1448 1449 c = ssl_get_cipher_by_char(s, p); 1450 p += n; 1451 if (c != NULL) { 1452 if (!sk_SSL_CIPHER_push(sk, c)) { 1453 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1454 ERR_R_MALLOC_FAILURE); 1455 goto err; 1456 } 1457 } 1458 } 1459 1460 if (skp != NULL) 1461 *skp = sk; 1462 return (sk); 1463 err: 1464 if ((skp == NULL) || (*skp == NULL)) 1465 sk_SSL_CIPHER_free(sk); 1466 return (NULL); 1467 } 1468 1469 1470 /* 1471 * Return a servername extension value if provided in Client Hello, or NULL. 1472 * So far, only host_name types are defined (RFC 3546). 1473 */ 1474 const char * 1475 SSL_get_servername(const SSL *s, const int type) 1476 { 1477 if (type != TLSEXT_NAMETYPE_host_name) 1478 return (NULL); 1479 1480 return (s->session && !s->tlsext_hostname ? 1481 s->session->tlsext_hostname : 1482 s->tlsext_hostname); 1483 } 1484 1485 int 1486 SSL_get_servername_type(const SSL *s) 1487 { 1488 if (s->session && 1489 (!s->tlsext_hostname ? 1490 s->session->tlsext_hostname : s->tlsext_hostname)) 1491 return (TLSEXT_NAMETYPE_host_name); 1492 return (-1); 1493 } 1494 1495 # ifndef OPENSSL_NO_NEXTPROTONEG 1496 /* 1497 * SSL_select_next_proto implements the standard protocol selection. It is 1498 * expected that this function is called from the callback set by 1499 * SSL_CTX_set_next_proto_select_cb. 1500 * 1501 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1502 * strings. The length byte itself is not included in the length. A byte 1503 * string of length 0 is invalid. No byte string may be truncated. 1504 * 1505 * The current, but experimental algorithm for selecting the protocol is: 1506 * 1507 * 1) If the server doesn't support NPN then this is indicated to the 1508 * callback. In this case, the client application has to abort the connection 1509 * or have a default application level protocol. 1510 * 1511 * 2) If the server supports NPN, but advertises an empty list then the 1512 * client selects the first protcol in its list, but indicates via the 1513 * API that this fallback case was enacted. 1514 * 1515 * 3) Otherwise, the client finds the first protocol in the server's list 1516 * that it supports and selects this protocol. This is because it's 1517 * assumed that the server has better information about which protocol 1518 * a client should use. 1519 * 1520 * 4) If the client doesn't support any of the server's advertised 1521 * protocols, then this is treated the same as case 2. 1522 * 1523 * It returns either 1524 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1525 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1526 */ 1527 int 1528 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1529 const unsigned char *server, unsigned int server_len, 1530 const unsigned char *client, unsigned int client_len) 1531 { 1532 unsigned int i, j; 1533 const unsigned char *result; 1534 int status = OPENSSL_NPN_UNSUPPORTED; 1535 1536 /* 1537 * For each protocol in server preference order, 1538 * see if we support it. 1539 */ 1540 for (i = 0; i < server_len; ) { 1541 for (j = 0; j < client_len; ) { 1542 if (server[i] == client[j] && 1543 memcmp(&server[i + 1], 1544 &client[j + 1], server[i]) == 0) { 1545 /* We found a match */ 1546 result = &server[i]; 1547 status = OPENSSL_NPN_NEGOTIATED; 1548 goto found; 1549 } 1550 j += client[j]; 1551 j++; 1552 } 1553 i += server[i]; 1554 i++; 1555 } 1556 1557 /* There's no overlap between our protocols and the server's list. */ 1558 result = client; 1559 status = OPENSSL_NPN_NO_OVERLAP; 1560 1561 found: 1562 *out = (unsigned char *) result + 1; 1563 *outlen = result[0]; 1564 return (status); 1565 } 1566 1567 /* 1568 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1569 * requested protocol for this connection and returns 0. If the client didn't 1570 * request any protocol, then *data is set to NULL. 1571 * 1572 * Note that the client can request any protocol it chooses. The value returned 1573 * from this function need not be a member of the list of supported protocols 1574 * provided by the callback. 1575 */ 1576 void 1577 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1578 unsigned *len) 1579 { 1580 *data = s->next_proto_negotiated; 1581 if (!*data) { 1582 *len = 0; 1583 } else { 1584 *len = s->next_proto_negotiated_len; 1585 } 1586 } 1587 1588 /* 1589 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1590 * TLS server needs a list of supported protocols for Next Protocol 1591 * Negotiation. The returned list must be in wire format. The list is returned 1592 * by setting |out| to point to it and |outlen| to its length. This memory will 1593 * not be modified, but one should assume that the SSL* keeps a reference to 1594 * it. 1595 * 1596 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1597 * Otherwise, no such extension will be included in the ServerHello. 1598 */ 1599 void 1600 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1601 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1602 { 1603 ctx->next_protos_advertised_cb = cb; 1604 ctx->next_protos_advertised_cb_arg = arg; 1605 } 1606 1607 /* 1608 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1609 * client needs to select a protocol from the server's provided list. |out| 1610 * must be set to point to the selected protocol (which may be within |in|). 1611 * The length of the protocol name must be written into |outlen|. The server's 1612 * advertised protocols are provided in |in| and |inlen|. The callback can 1613 * assume that |in| is syntactically valid. 1614 * 1615 * The client must select a protocol. It is fatal to the connection if this 1616 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1617 */ 1618 void 1619 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1620 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1621 unsigned int inlen, void *arg), void *arg) 1622 { 1623 ctx->next_proto_select_cb = cb; 1624 ctx->next_proto_select_cb_arg = arg; 1625 } 1626 # endif 1627 1628 int 1629 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1630 const char *label, size_t llen, const unsigned char *p, size_t plen, 1631 int use_context) 1632 { 1633 if (s->version < TLS1_VERSION) 1634 return (-1); 1635 1636 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1637 label, llen, p, plen, use_context)); 1638 } 1639 1640 static unsigned long 1641 ssl_session_hash(const SSL_SESSION *a) 1642 { 1643 unsigned long l; 1644 1645 l = (unsigned long) 1646 ((unsigned int) a->session_id[0] )| 1647 ((unsigned int) a->session_id[1]<< 8L)| 1648 ((unsigned long)a->session_id[2]<<16L)| 1649 ((unsigned long)a->session_id[3]<<24L); 1650 return (l); 1651 } 1652 1653 /* 1654 * NB: If this function (or indeed the hash function which uses a sort of 1655 * coarser function than this one) is changed, ensure 1656 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1657 * able to construct an SSL_SESSION that will collide with any existing session 1658 * with a matching session ID. 1659 */ 1660 static int 1661 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1662 { 1663 if (a->ssl_version != b->ssl_version) 1664 return (1); 1665 if (a->session_id_length != b->session_id_length) 1666 return (1); 1667 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1668 return (1); 1669 return (0); 1670 } 1671 1672 /* 1673 * These wrapper functions should remain rather than redeclaring 1674 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1675 * variable. The reason is that the functions aren't static, they're exposed via 1676 * ssl.h. 1677 */ 1678 static 1679 IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1680 static 1681 IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1682 1683 SSL_CTX * 1684 SSL_CTX_new(const SSL_METHOD *meth) 1685 { 1686 SSL_CTX *ret = NULL; 1687 1688 if (meth == NULL) { 1689 SSLerr(SSL_F_SSL_CTX_NEW, 1690 SSL_R_NULL_SSL_METHOD_PASSED); 1691 return (NULL); 1692 } 1693 1694 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1695 SSLerr(SSL_F_SSL_CTX_NEW, 1696 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1697 goto err; 1698 } 1699 ret = calloc(1, sizeof(SSL_CTX)); 1700 if (ret == NULL) 1701 goto err; 1702 1703 ret->method = meth; 1704 1705 ret->cert_store = NULL; 1706 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1707 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1708 ret->session_cache_head = NULL; 1709 ret->session_cache_tail = NULL; 1710 1711 /* We take the system default */ 1712 ret->session_timeout = meth->get_timeout(); 1713 1714 ret->new_session_cb = 0; 1715 ret->remove_session_cb = 0; 1716 ret->get_session_cb = 0; 1717 ret->generate_session_id = 0; 1718 1719 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1720 1721 ret->references = 1; 1722 ret->quiet_shutdown = 0; 1723 1724 ret->info_callback = NULL; 1725 1726 ret->app_verify_callback = 0; 1727 ret->app_verify_arg = NULL; 1728 1729 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1730 ret->read_ahead = 0; 1731 ret->msg_callback = 0; 1732 ret->msg_callback_arg = NULL; 1733 ret->verify_mode = SSL_VERIFY_NONE; 1734 ret->sid_ctx_length = 0; 1735 ret->default_verify_callback = NULL; 1736 if ((ret->cert = ssl_cert_new()) == NULL) 1737 goto err; 1738 1739 ret->default_passwd_callback = 0; 1740 ret->default_passwd_callback_userdata = NULL; 1741 ret->client_cert_cb = 0; 1742 ret->app_gen_cookie_cb = 0; 1743 ret->app_verify_cookie_cb = 0; 1744 1745 ret->sessions = lh_SSL_SESSION_new(); 1746 if (ret->sessions == NULL) 1747 goto err; 1748 ret->cert_store = X509_STORE_new(); 1749 if (ret->cert_store == NULL) 1750 goto err; 1751 1752 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1753 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1754 if (ret->cipher_list == NULL || 1755 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1756 SSLerr(SSL_F_SSL_CTX_NEW, 1757 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1758 goto err2; 1759 } 1760 1761 ret->param = X509_VERIFY_PARAM_new(); 1762 if (!ret->param) 1763 goto err; 1764 1765 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1766 SSLerr(SSL_F_SSL_CTX_NEW, 1767 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1768 goto err2; 1769 } 1770 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1771 SSLerr(SSL_F_SSL_CTX_NEW, 1772 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1773 goto err2; 1774 } 1775 1776 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1777 goto err; 1778 1779 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1780 1781 ret->extra_certs = NULL; 1782 1783 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1784 1785 ret->tlsext_servername_callback = 0; 1786 ret->tlsext_servername_arg = NULL; 1787 /* Setup RFC4507 ticket keys */ 1788 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1789 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1790 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1791 ret->options |= SSL_OP_NO_TICKET; 1792 1793 ret->tlsext_status_cb = 0; 1794 ret->tlsext_status_arg = NULL; 1795 1796 # ifndef OPENSSL_NO_NEXTPROTONEG 1797 ret->next_protos_advertised_cb = 0; 1798 ret->next_proto_select_cb = 0; 1799 # endif 1800 #ifndef OPENSSL_NO_ENGINE 1801 ret->client_cert_engine = NULL; 1802 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1803 #define eng_strx(x) #x 1804 #define eng_str(x) eng_strx(x) 1805 /* Use specific client engine automatically... ignore errors */ 1806 { 1807 ENGINE *eng; 1808 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1809 if (!eng) { 1810 ERR_clear_error(); 1811 ENGINE_load_builtin_engines(); 1812 eng = ENGINE_by_id(eng_str( 1813 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1814 } 1815 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1816 ERR_clear_error(); 1817 } 1818 #endif 1819 #endif 1820 /* 1821 * Default is to connect to non-RI servers. When RI is more widely 1822 * deployed might change this. 1823 */ 1824 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1825 1826 return (ret); 1827 err: 1828 SSLerr(SSL_F_SSL_CTX_NEW, 1829 ERR_R_MALLOC_FAILURE); 1830 err2: 1831 SSL_CTX_free(ret); 1832 return (NULL); 1833 } 1834 1835 void 1836 SSL_CTX_free(SSL_CTX *a) 1837 { 1838 int i; 1839 1840 if (a == NULL) 1841 return; 1842 1843 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1844 if (i > 0) 1845 return; 1846 1847 if (a->param) 1848 X509_VERIFY_PARAM_free(a->param); 1849 1850 /* 1851 * Free internal session cache. However: the remove_cb() may reference 1852 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1853 * after the sessions were flushed. 1854 * As the ex_data handling routines might also touch the session cache, 1855 * the most secure solution seems to be: empty (flush) the cache, then 1856 * free ex_data, then finally free the cache. 1857 * (See ticket [openssl.org #212].) 1858 */ 1859 if (a->sessions != NULL) 1860 SSL_CTX_flush_sessions(a, 0); 1861 1862 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1863 1864 if (a->sessions != NULL) 1865 lh_SSL_SESSION_free(a->sessions); 1866 1867 if (a->cert_store != NULL) 1868 X509_STORE_free(a->cert_store); 1869 if (a->cipher_list != NULL) 1870 sk_SSL_CIPHER_free(a->cipher_list); 1871 if (a->cipher_list_by_id != NULL) 1872 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1873 if (a->cert != NULL) 1874 ssl_cert_free(a->cert); 1875 if (a->client_CA != NULL) 1876 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1877 if (a->extra_certs != NULL) 1878 sk_X509_pop_free(a->extra_certs, X509_free); 1879 1880 #ifndef OPENSSL_NO_SRTP 1881 if (a->srtp_profiles) 1882 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1883 #endif 1884 1885 #ifndef OPENSSL_NO_ENGINE 1886 if (a->client_cert_engine) 1887 ENGINE_finish(a->client_cert_engine); 1888 #endif 1889 1890 free(a); 1891 } 1892 1893 void 1894 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1895 { 1896 ctx->default_passwd_callback = cb; 1897 } 1898 1899 void 1900 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1901 { 1902 ctx->default_passwd_callback_userdata = u; 1903 } 1904 1905 void 1906 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1907 void *), void *arg) 1908 { 1909 ctx->app_verify_callback = cb; 1910 ctx->app_verify_arg = arg; 1911 } 1912 1913 void 1914 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1915 { 1916 ctx->verify_mode = mode; 1917 ctx->default_verify_callback = cb; 1918 } 1919 1920 void 1921 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1922 { 1923 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1924 } 1925 1926 void 1927 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1928 { 1929 CERT_PKEY *cpk; 1930 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 1931 unsigned long mask_k, mask_a; 1932 int have_ecc_cert, ecdh_ok, ecdsa_ok; 1933 int have_ecdh_tmp; 1934 X509 *x = NULL; 1935 EVP_PKEY *ecc_pkey = NULL; 1936 int signature_nid = 0, pk_nid = 0, md_nid = 0; 1937 1938 if (c == NULL) 1939 return; 1940 1941 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1942 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1943 1944 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1945 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1946 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1947 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1948 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1949 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1950 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1951 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 1952 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1953 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 1954 /* FIX THIS EAY EAY EAY */ 1955 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 1956 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1957 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1958 mask_k = 0; 1959 mask_a = 0; 1960 1961 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1962 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1963 mask_k |= SSL_kGOST; 1964 mask_a |= SSL_aGOST01; 1965 } 1966 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1967 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1968 mask_k |= SSL_kGOST; 1969 mask_a |= SSL_aGOST94; 1970 } 1971 1972 if (rsa_enc || (rsa_tmp && rsa_sign)) 1973 mask_k|=SSL_kRSA; 1974 1975 if (dh_tmp) 1976 mask_k|=SSL_kDHE; 1977 1978 if (dh_rsa) 1979 mask_k|=SSL_kDHr; 1980 1981 if (dh_dsa) 1982 mask_k|=SSL_kDHd; 1983 1984 if (rsa_enc || rsa_sign) 1985 mask_a|=SSL_aRSA; 1986 1987 if (dsa_sign) 1988 mask_a|=SSL_aDSS; 1989 1990 mask_a|=SSL_aNULL; 1991 1992 /* 1993 * An ECC certificate may be usable for ECDH and/or 1994 * ECDSA cipher suites depending on the key usage extension. 1995 */ 1996 if (have_ecc_cert) { 1997 /* This call populates extension flags (ex_flags) */ 1998 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1999 X509_check_purpose(x, -1, 0); 2000 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2001 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2002 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2003 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2004 ecc_pkey = X509_get_pubkey(x); 2005 EVP_PKEY_free(ecc_pkey); 2006 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2007 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2008 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2009 } 2010 if (ecdh_ok) { 2011 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2012 mask_k|=SSL_kECDHr; 2013 mask_a|=SSL_aECDH; 2014 } 2015 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2016 mask_k|=SSL_kECDHe; 2017 mask_a|=SSL_aECDH; 2018 } 2019 } 2020 if (ecdsa_ok) 2021 mask_a|=SSL_aECDSA; 2022 } 2023 2024 if (have_ecdh_tmp) { 2025 mask_k|=SSL_kECDHE; 2026 } 2027 2028 2029 c->mask_k = mask_k; 2030 c->mask_a = mask_a; 2031 c->valid = 1; 2032 } 2033 2034 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2035 #define ku_reject(x, usage) \ 2036 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2037 2038 2039 int 2040 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2041 { 2042 unsigned long alg_k, alg_a; 2043 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2044 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2045 2046 alg_k = cs->algorithm_mkey; 2047 alg_a = cs->algorithm_auth; 2048 2049 /* This call populates the ex_flags field correctly */ 2050 X509_check_purpose(x, -1, 0); 2051 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2052 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2053 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2054 } 2055 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2056 /* key usage, if present, must allow key agreement */ 2057 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2058 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2059 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2060 return (0); 2061 } 2062 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2063 TLS1_2_VERSION) { 2064 /* signature alg must be ECDSA */ 2065 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2066 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2067 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2068 return (0); 2069 } 2070 } 2071 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2072 TLS1_2_VERSION) { 2073 /* signature alg must be RSA */ 2074 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2075 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2076 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2077 return (0); 2078 } 2079 } 2080 } 2081 if (alg_a & SSL_aECDSA) { 2082 /* key usage, if present, must allow signing */ 2083 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2084 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2085 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2086 return (0); 2087 } 2088 } 2089 2090 return (1); 2091 /* all checks are ok */ 2092 } 2093 2094 2095 /* THIS NEEDS CLEANING UP */ 2096 CERT_PKEY * 2097 ssl_get_server_send_pkey(const SSL *s) 2098 { 2099 unsigned long alg_k, alg_a; 2100 CERT *c; 2101 int i; 2102 2103 c = s->cert; 2104 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2105 2106 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2107 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2108 2109 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2110 /* 2111 * We don't need to look at SSL_kECDHE 2112 * since no certificate is needed for 2113 * anon ECDH and for authenticated 2114 * ECDHE, the check for the auth 2115 * algorithm will set i correctly 2116 * NOTE: For ECDH-RSA, we need an ECC 2117 * not an RSA cert but for EECDH-RSA 2118 * we need an RSA cert. Placing the 2119 * checks for SSL_kECDH before RSA 2120 * checks ensures the correct cert is chosen. 2121 */ 2122 i = SSL_PKEY_ECC; 2123 } else if (alg_a & SSL_aECDSA) { 2124 i = SSL_PKEY_ECC; 2125 } else if (alg_k & SSL_kDHr) { 2126 i = SSL_PKEY_DH_RSA; 2127 } else if (alg_k & SSL_kDHd) { 2128 i = SSL_PKEY_DH_DSA; 2129 } else if (alg_a & SSL_aDSS) { 2130 i = SSL_PKEY_DSA_SIGN; 2131 } else if (alg_a & SSL_aRSA) { 2132 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2133 i = SSL_PKEY_RSA_SIGN; 2134 else 2135 i = SSL_PKEY_RSA_ENC; 2136 } else if (alg_a & SSL_aGOST94) { 2137 i = SSL_PKEY_GOST94; 2138 } else if (alg_a & SSL_aGOST01) { 2139 i = SSL_PKEY_GOST01; 2140 } else { /* if (alg_a & SSL_aNULL) */ 2141 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR); 2142 return (NULL); 2143 } 2144 2145 return (c->pkeys + i); 2146 } 2147 2148 X509 * 2149 ssl_get_server_send_cert(const SSL *s) 2150 { 2151 CERT_PKEY *cpk; 2152 2153 cpk = ssl_get_server_send_pkey(s); 2154 if (!cpk) 2155 return (NULL); 2156 return (cpk->x509); 2157 } 2158 2159 EVP_PKEY * 2160 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2161 { 2162 unsigned long alg_a; 2163 CERT *c; 2164 int idx = -1; 2165 2166 alg_a = cipher->algorithm_auth; 2167 c = s->cert; 2168 2169 if ((alg_a & SSL_aDSS) && 2170 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2171 idx = SSL_PKEY_DSA_SIGN; 2172 else if (alg_a & SSL_aRSA) { 2173 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2174 idx = SSL_PKEY_RSA_SIGN; 2175 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2176 idx = SSL_PKEY_RSA_ENC; 2177 } else if ((alg_a & SSL_aECDSA) && 2178 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2179 idx = SSL_PKEY_ECC; 2180 if (idx == -1) { 2181 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR); 2182 return (NULL); 2183 } 2184 if (pmd) 2185 *pmd = c->pkeys[idx].digest; 2186 return (c->pkeys[idx].privatekey); 2187 } 2188 2189 void 2190 ssl_update_cache(SSL *s, int mode) 2191 { 2192 int i; 2193 2194 /* 2195 * If the session_id_length is 0, we are not supposed to cache it, 2196 * and it would be rather hard to do anyway :-) 2197 */ 2198 if (s->session->session_id_length == 0) 2199 return; 2200 2201 i = s->session_ctx->session_cache_mode; 2202 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2203 || SSL_CTX_add_session(s->session_ctx, s->session)) 2204 && (s->session_ctx->new_session_cb != NULL)) { 2205 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2206 if (!s->session_ctx->new_session_cb(s, s->session)) 2207 SSL_SESSION_free(s->session); 2208 } 2209 2210 /* auto flush every 255 connections */ 2211 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2212 ((i & mode) == mode)) { 2213 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2214 s->session_ctx->stats.sess_connect_good : 2215 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2216 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2217 } 2218 } 2219 } 2220 2221 const SSL_METHOD * 2222 SSL_get_ssl_method(SSL *s) 2223 { 2224 return (s->method); 2225 } 2226 2227 int 2228 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2229 { 2230 int conn = -1; 2231 int ret = 1; 2232 2233 if (s->method != meth) { 2234 if (s->handshake_func != NULL) 2235 conn = (s->handshake_func == s->method->ssl_connect); 2236 2237 if (s->method->version == meth->version) 2238 s->method = meth; 2239 else { 2240 s->method->ssl_free(s); 2241 s->method = meth; 2242 ret = s->method->ssl_new(s); 2243 } 2244 2245 if (conn == 1) 2246 s->handshake_func = meth->ssl_connect; 2247 else if (conn == 0) 2248 s->handshake_func = meth->ssl_accept; 2249 } 2250 return (ret); 2251 } 2252 2253 int 2254 SSL_get_error(const SSL *s, int i) 2255 { 2256 int reason; 2257 unsigned long l; 2258 BIO *bio; 2259 2260 if (i > 0) 2261 return (SSL_ERROR_NONE); 2262 2263 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2264 * etc, where we do encode the error */ 2265 if ((l = ERR_peek_error()) != 0) { 2266 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2267 return (SSL_ERROR_SYSCALL); 2268 else 2269 return (SSL_ERROR_SSL); 2270 } 2271 2272 if ((i < 0) && SSL_want_read(s)) { 2273 bio = SSL_get_rbio(s); 2274 if (BIO_should_read(bio)) { 2275 return (SSL_ERROR_WANT_READ); 2276 } else if (BIO_should_write(bio)) { 2277 /* 2278 * This one doesn't make too much sense... We never 2279 * try to write to the rbio, and an application 2280 * program where rbio and wbio are separate couldn't 2281 * even know what it should wait for. However if we 2282 * ever set s->rwstate incorrectly (so that we have 2283 * SSL_want_read(s) instead of SSL_want_write(s)) 2284 * and rbio and wbio *are* the same, this test works 2285 * around that bug; so it might be safer to keep it. 2286 */ 2287 return (SSL_ERROR_WANT_WRITE); 2288 } else if (BIO_should_io_special(bio)) { 2289 reason = BIO_get_retry_reason(bio); 2290 if (reason == BIO_RR_CONNECT) 2291 return (SSL_ERROR_WANT_CONNECT); 2292 else if (reason == BIO_RR_ACCEPT) 2293 return (SSL_ERROR_WANT_ACCEPT); 2294 else 2295 return (SSL_ERROR_SYSCALL); /* unknown */ 2296 } 2297 } 2298 2299 if ((i < 0) && SSL_want_write(s)) { 2300 bio = SSL_get_wbio(s); 2301 if (BIO_should_write(bio)) { 2302 return (SSL_ERROR_WANT_WRITE); 2303 } else if (BIO_should_read(bio)) { 2304 /* 2305 * See above (SSL_want_read(s) with 2306 * BIO_should_write(bio)) 2307 */ 2308 return (SSL_ERROR_WANT_READ); 2309 } else if (BIO_should_io_special(bio)) { 2310 reason = BIO_get_retry_reason(bio); 2311 if (reason == BIO_RR_CONNECT) 2312 return (SSL_ERROR_WANT_CONNECT); 2313 else if (reason == BIO_RR_ACCEPT) 2314 return (SSL_ERROR_WANT_ACCEPT); 2315 else 2316 return (SSL_ERROR_SYSCALL); 2317 } 2318 } 2319 if ((i < 0) && SSL_want_x509_lookup(s)) { 2320 return (SSL_ERROR_WANT_X509_LOOKUP); 2321 } 2322 2323 if (i == 0) { 2324 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2325 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2326 return (SSL_ERROR_ZERO_RETURN); 2327 } 2328 return (SSL_ERROR_SYSCALL); 2329 } 2330 2331 int 2332 SSL_do_handshake(SSL *s) 2333 { 2334 int ret = 1; 2335 2336 if (s->handshake_func == NULL) { 2337 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2338 SSL_R_CONNECTION_TYPE_NOT_SET); 2339 return (-1); 2340 } 2341 2342 s->method->ssl_renegotiate_check(s); 2343 2344 if (SSL_in_init(s) || SSL_in_before(s)) { 2345 ret = s->handshake_func(s); 2346 } 2347 return (ret); 2348 } 2349 2350 /* 2351 * For the next 2 functions, SSL_clear() sets shutdown and so 2352 * one of these calls will reset it 2353 */ 2354 void 2355 SSL_set_accept_state(SSL *s) 2356 { 2357 s->server = 1; 2358 s->shutdown = 0; 2359 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2360 s->handshake_func = s->method->ssl_accept; 2361 /* clear the current cipher */ 2362 ssl_clear_cipher_ctx(s); 2363 ssl_clear_hash_ctx(&s->read_hash); 2364 ssl_clear_hash_ctx(&s->write_hash); 2365 } 2366 2367 void 2368 SSL_set_connect_state(SSL *s) 2369 { 2370 s->server = 0; 2371 s->shutdown = 0; 2372 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2373 s->handshake_func = s->method->ssl_connect; 2374 /* clear the current cipher */ 2375 ssl_clear_cipher_ctx(s); 2376 ssl_clear_hash_ctx(&s->read_hash); 2377 ssl_clear_hash_ctx(&s->write_hash); 2378 } 2379 2380 int 2381 ssl_undefined_function(SSL *s) 2382 { 2383 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2384 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2385 return (0); 2386 } 2387 2388 int 2389 ssl_undefined_void_function(void) 2390 { 2391 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2392 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2393 return (0); 2394 } 2395 2396 int 2397 ssl_undefined_const_function(const SSL *s) 2398 { 2399 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2400 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2401 return (0); 2402 } 2403 2404 SSL_METHOD * 2405 ssl_bad_method(int ver) 2406 { 2407 SSLerr(SSL_F_SSL_BAD_METHOD, 2408 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2409 return (NULL); 2410 } 2411 2412 const char * 2413 ssl_version_string(int ver) 2414 { 2415 switch (ver) { 2416 case DTLS1_BAD_VER: 2417 return (SSL_TXT_DTLS1_BAD); 2418 case DTLS1_VERSION: 2419 return (SSL_TXT_DTLS1); 2420 case SSL3_VERSION: 2421 return (SSL_TXT_SSLV3); 2422 case TLS1_VERSION: 2423 return (SSL_TXT_TLSV1); 2424 case TLS1_1_VERSION: 2425 return (SSL_TXT_TLSV1_1); 2426 case TLS1_2_VERSION: 2427 return (SSL_TXT_TLSV1_2); 2428 default: 2429 return ("unknown"); 2430 } 2431 } 2432 2433 const char * 2434 SSL_get_version(const SSL *s) 2435 { 2436 return ssl_version_string(s->version); 2437 } 2438 2439 SSL * 2440 SSL_dup(SSL *s) 2441 { 2442 STACK_OF(X509_NAME) *sk; 2443 X509_NAME *xn; 2444 SSL *ret; 2445 int i; 2446 2447 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2448 return (NULL); 2449 2450 ret->version = s->version; 2451 ret->type = s->type; 2452 ret->method = s->method; 2453 2454 if (s->session != NULL) { 2455 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2456 SSL_copy_session_id(ret, s); 2457 } else { 2458 /* 2459 * No session has been established yet, so we have to expect 2460 * that s->cert or ret->cert will be changed later -- 2461 * they should not both point to the same object, 2462 * and thus we can't use SSL_copy_session_id. 2463 */ 2464 2465 ret->method->ssl_free(ret); 2466 ret->method = s->method; 2467 ret->method->ssl_new(ret); 2468 2469 if (s->cert != NULL) { 2470 if (ret->cert != NULL) { 2471 ssl_cert_free(ret->cert); 2472 } 2473 ret->cert = ssl_cert_dup(s->cert); 2474 if (ret->cert == NULL) 2475 goto err; 2476 } 2477 2478 SSL_set_session_id_context(ret, 2479 s->sid_ctx, s->sid_ctx_length); 2480 } 2481 2482 ret->options = s->options; 2483 ret->mode = s->mode; 2484 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2485 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2486 ret->msg_callback = s->msg_callback; 2487 ret->msg_callback_arg = s->msg_callback_arg; 2488 SSL_set_verify(ret, SSL_get_verify_mode(s), 2489 SSL_get_verify_callback(s)); 2490 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2491 ret->generate_session_id = s->generate_session_id; 2492 2493 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2494 2495 ret->debug = s->debug; 2496 2497 /* copy app data, a little dangerous perhaps */ 2498 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2499 &ret->ex_data, &s->ex_data)) 2500 goto err; 2501 2502 /* setup rbio, and wbio */ 2503 if (s->rbio != NULL) { 2504 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2505 goto err; 2506 } 2507 if (s->wbio != NULL) { 2508 if (s->wbio != s->rbio) { 2509 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2510 goto err; 2511 } else 2512 ret->wbio = ret->rbio; 2513 } 2514 ret->rwstate = s->rwstate; 2515 ret->in_handshake = s->in_handshake; 2516 ret->handshake_func = s->handshake_func; 2517 ret->server = s->server; 2518 ret->renegotiate = s->renegotiate; 2519 ret->new_session = s->new_session; 2520 ret->quiet_shutdown = s->quiet_shutdown; 2521 ret->shutdown = s->shutdown; 2522 /* SSL_dup does not really work at any state, though */ 2523 ret->state=s->state; 2524 ret->rstate = s->rstate; 2525 2526 /* 2527 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2528 * ret->init_off 2529 */ 2530 ret->init_num = 0; 2531 2532 ret->hit = s->hit; 2533 2534 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2535 2536 /* dup the cipher_list and cipher_list_by_id stacks */ 2537 if (s->cipher_list != NULL) { 2538 if ((ret->cipher_list = 2539 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2540 goto err; 2541 } 2542 if (s->cipher_list_by_id != NULL) { 2543 if ((ret->cipher_list_by_id = 2544 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2545 goto err; 2546 } 2547 2548 /* Dup the client_CA list */ 2549 if (s->client_CA != NULL) { 2550 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2551 ret->client_CA = sk; 2552 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2553 xn = sk_X509_NAME_value(sk, i); 2554 if (sk_X509_NAME_set(sk, i, 2555 X509_NAME_dup(xn)) == NULL) { 2556 X509_NAME_free(xn); 2557 goto err; 2558 } 2559 } 2560 } 2561 2562 if (0) { 2563 err: 2564 if (ret != NULL) 2565 SSL_free(ret); 2566 ret = NULL; 2567 } 2568 return (ret); 2569 } 2570 2571 void 2572 ssl_clear_cipher_ctx(SSL *s) 2573 { 2574 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2575 s->enc_read_ctx = NULL; 2576 EVP_CIPHER_CTX_free(s->enc_write_ctx); 2577 s->enc_write_ctx = NULL; 2578 2579 if (s->aead_read_ctx != NULL) { 2580 EVP_AEAD_CTX_cleanup(&s->aead_read_ctx->ctx); 2581 free(s->aead_read_ctx); 2582 s->aead_read_ctx = NULL; 2583 } 2584 if (s->aead_write_ctx != NULL) { 2585 EVP_AEAD_CTX_cleanup(&s->aead_write_ctx->ctx); 2586 free(s->aead_write_ctx); 2587 s->aead_write_ctx = NULL; 2588 } 2589 2590 } 2591 2592 /* Fix this function so that it takes an optional type parameter */ 2593 X509 * 2594 SSL_get_certificate(const SSL *s) 2595 { 2596 if (s->cert != NULL) 2597 return (s->cert->key->x509); 2598 else 2599 return (NULL); 2600 } 2601 2602 /* Fix this function so that it takes an optional type parameter */ 2603 EVP_PKEY * 2604 SSL_get_privatekey(SSL *s) 2605 { 2606 if (s->cert != NULL) 2607 return (s->cert->key->privatekey); 2608 else 2609 return (NULL); 2610 } 2611 2612 const SSL_CIPHER * 2613 SSL_get_current_cipher(const SSL *s) 2614 { 2615 if ((s->session != NULL) && (s->session->cipher != NULL)) 2616 return (s->session->cipher); 2617 return (NULL); 2618 } 2619 const void * 2620 SSL_get_current_compression(SSL *s) 2621 { 2622 return (NULL); 2623 } 2624 2625 const void * 2626 SSL_get_current_expansion(SSL *s) 2627 { 2628 return (NULL); 2629 } 2630 2631 int 2632 ssl_init_wbio_buffer(SSL *s, int push) 2633 { 2634 BIO *bbio; 2635 2636 if (s->bbio == NULL) { 2637 bbio = BIO_new(BIO_f_buffer()); 2638 if (bbio == NULL) 2639 return (0); 2640 s->bbio = bbio; 2641 } else { 2642 bbio = s->bbio; 2643 if (s->bbio == s->wbio) 2644 s->wbio = BIO_pop(s->wbio); 2645 } 2646 (void)BIO_reset(bbio); 2647 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2648 if (!BIO_set_read_buffer_size(bbio, 1)) { 2649 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2650 ERR_R_BUF_LIB); 2651 return (0); 2652 } 2653 if (push) { 2654 if (s->wbio != bbio) 2655 s->wbio = BIO_push(bbio, s->wbio); 2656 } else { 2657 if (s->wbio == bbio) 2658 s->wbio = BIO_pop(bbio); 2659 } 2660 return (1); 2661 } 2662 2663 void 2664 ssl_free_wbio_buffer(SSL *s) 2665 { 2666 if (s->bbio == NULL) 2667 return; 2668 2669 if (s->bbio == s->wbio) { 2670 /* remove buffering */ 2671 s->wbio = BIO_pop(s->wbio); 2672 } 2673 BIO_free(s->bbio); 2674 s->bbio = NULL; 2675 } 2676 2677 void 2678 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2679 { 2680 ctx->quiet_shutdown = mode; 2681 } 2682 2683 int 2684 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2685 { 2686 return (ctx->quiet_shutdown); 2687 } 2688 2689 void 2690 SSL_set_quiet_shutdown(SSL *s, int mode) 2691 { 2692 s->quiet_shutdown = mode; 2693 } 2694 2695 int 2696 SSL_get_quiet_shutdown(const SSL *s) 2697 { 2698 return (s->quiet_shutdown); 2699 } 2700 2701 void 2702 SSL_set_shutdown(SSL *s, int mode) 2703 { 2704 s->shutdown = mode; 2705 } 2706 2707 int 2708 SSL_get_shutdown(const SSL *s) 2709 { 2710 return (s->shutdown); 2711 } 2712 2713 int 2714 SSL_version(const SSL *s) 2715 { 2716 return (s->version); 2717 } 2718 2719 SSL_CTX * 2720 SSL_get_SSL_CTX(const SSL *ssl) 2721 { 2722 return (ssl->ctx); 2723 } 2724 2725 SSL_CTX * 2726 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2727 { 2728 if (ssl->ctx == ctx) 2729 return (ssl->ctx); 2730 if (ctx == NULL) 2731 ctx = ssl->initial_ctx; 2732 if (ssl->cert != NULL) 2733 ssl_cert_free(ssl->cert); 2734 ssl->cert = ssl_cert_dup(ctx->cert); 2735 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2736 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2737 ssl->ctx = ctx; 2738 return (ssl->ctx); 2739 } 2740 2741 int 2742 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2743 { 2744 return (X509_STORE_set_default_paths(ctx->cert_store)); 2745 } 2746 2747 int 2748 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2749 const char *CApath) 2750 { 2751 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2752 } 2753 2754 void 2755 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2756 { 2757 ssl->info_callback = cb; 2758 } 2759 2760 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2761 { 2762 return (ssl->info_callback); 2763 } 2764 2765 int 2766 SSL_state(const SSL *ssl) 2767 { 2768 return (ssl->state); 2769 } 2770 2771 void 2772 SSL_set_state(SSL *ssl, int state) 2773 { 2774 ssl->state = state; 2775 } 2776 2777 void 2778 SSL_set_verify_result(SSL *ssl, long arg) 2779 { 2780 ssl->verify_result = arg; 2781 } 2782 2783 long 2784 SSL_get_verify_result(const SSL *ssl) 2785 { 2786 return (ssl->verify_result); 2787 } 2788 2789 int 2790 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2791 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2792 { 2793 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2794 new_func, dup_func, free_func)); 2795 } 2796 2797 int 2798 SSL_set_ex_data(SSL *s, int idx, void *arg) 2799 { 2800 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2801 } 2802 2803 void * 2804 SSL_get_ex_data(const SSL *s, int idx) 2805 { 2806 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2807 } 2808 2809 int 2810 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2811 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2812 { 2813 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2814 new_func, dup_func, free_func)); 2815 } 2816 2817 int 2818 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2819 { 2820 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 2821 } 2822 2823 void * 2824 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2825 { 2826 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 2827 } 2828 2829 int 2830 ssl_ok(SSL *s) 2831 { 2832 return (1); 2833 } 2834 2835 X509_STORE * 2836 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2837 { 2838 return (ctx->cert_store); 2839 } 2840 2841 void 2842 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2843 { 2844 if (ctx->cert_store != NULL) 2845 X509_STORE_free(ctx->cert_store); 2846 ctx->cert_store = store; 2847 } 2848 2849 int 2850 SSL_want(const SSL *s) 2851 { 2852 return (s->rwstate); 2853 } 2854 2855 void 2856 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2857 int keylength)) 2858 { 2859 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2860 } 2861 2862 void 2863 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2864 int keylength)) 2865 { 2866 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2867 } 2868 2869 void 2870 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2871 int keylength)) 2872 { 2873 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2874 } 2875 2876 void 2877 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2878 int keylength)) 2879 { 2880 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2881 } 2882 2883 void 2884 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2885 int is_export, int keylength)) 2886 { 2887 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2888 (void (*)(void))ecdh); 2889 } 2890 2891 void 2892 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2893 int keylength)) 2894 { 2895 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2896 } 2897 2898 2899 void 2900 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2901 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2902 { 2903 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2904 (void (*)(void))cb); 2905 } 2906 2907 void 2908 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2909 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2910 { 2911 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2912 } 2913 2914 /* 2915 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 2916 * variable, freeing EVP_MD_CTX previously stored in that variable, if 2917 * any. If EVP_MD pointer is passed, initializes ctx with this md 2918 * Returns newly allocated ctx; 2919 */ 2920 EVP_MD_CTX * 2921 ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 2922 { 2923 ssl_clear_hash_ctx(hash); 2924 *hash = EVP_MD_CTX_create(); 2925 if (*hash != NULL && md != NULL) 2926 EVP_DigestInit_ex(*hash, md, NULL); 2927 return (*hash); 2928 } 2929 2930 void 2931 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 2932 { 2933 if (*hash) 2934 EVP_MD_CTX_destroy(*hash); 2935 *hash = NULL; 2936 } 2937 2938 void 2939 SSL_set_debug(SSL *s, int debug) 2940 { 2941 s->debug = debug; 2942 } 2943 2944 int 2945 SSL_cache_hit(SSL *s) 2946 { 2947 return (s->hit); 2948 } 2949 2950 IMPLEMENT_STACK_OF(SSL_CIPHER) 2951 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 2952