1 /* $OpenBSD: ssl_lib.c,v 1.205 2019/05/15 09:13:16 bcook 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> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #include "bytestring.h" 159 #include "ssl_sigalgs.h" 160 161 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 162 163 int 164 SSL_clear(SSL *s) 165 { 166 if (s->method == NULL) { 167 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 168 return (0); 169 } 170 171 if (ssl_clear_bad_session(s)) { 172 SSL_SESSION_free(s->session); 173 s->session = NULL; 174 } 175 176 s->error = 0; 177 s->internal->hit = 0; 178 s->internal->shutdown = 0; 179 180 if (s->internal->renegotiate) { 181 SSLerror(s, ERR_R_INTERNAL_ERROR); 182 return (0); 183 } 184 185 s->internal->type = 0; 186 187 s->version = s->method->internal->version; 188 s->client_version = s->version; 189 s->internal->rwstate = SSL_NOTHING; 190 s->internal->rstate = SSL_ST_READ_HEADER; 191 192 BUF_MEM_free(s->internal->init_buf); 193 s->internal->init_buf = NULL; 194 195 ssl_clear_cipher_state(s); 196 197 s->internal->first_packet = 0; 198 199 /* 200 * Check to see if we were changed into a different method, if 201 * so, revert back if we are not doing session-id reuse. 202 */ 203 if (!s->internal->in_handshake && (s->session == NULL) && 204 (s->method != s->ctx->method)) { 205 s->method->internal->ssl_free(s); 206 s->method = s->ctx->method; 207 if (!s->method->internal->ssl_new(s)) 208 return (0); 209 } else 210 s->method->internal->ssl_clear(s); 211 212 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 213 214 return (1); 215 } 216 217 /* Used to change an SSL_CTXs default SSL method type */ 218 int 219 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 220 { 221 STACK_OF(SSL_CIPHER) *sk; 222 223 ctx->method = meth; 224 225 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 226 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 227 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 228 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 229 return (0); 230 } 231 return (1); 232 } 233 234 SSL * 235 SSL_new(SSL_CTX *ctx) 236 { 237 SSL *s; 238 239 if (ctx == NULL) { 240 SSLerrorx(SSL_R_NULL_SSL_CTX); 241 return (NULL); 242 } 243 if (ctx->method == NULL) { 244 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 245 return (NULL); 246 } 247 248 if ((s = calloc(1, sizeof(*s))) == NULL) { 249 SSLerrorx(ERR_R_MALLOC_FAILURE); 250 return (NULL); 251 } 252 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 253 free(s); 254 SSLerrorx(ERR_R_MALLOC_FAILURE); 255 return (NULL); 256 } 257 258 s->internal->min_version = ctx->internal->min_version; 259 s->internal->max_version = ctx->internal->max_version; 260 261 s->internal->options = ctx->internal->options; 262 s->internal->mode = ctx->internal->mode; 263 s->internal->max_cert_list = ctx->internal->max_cert_list; 264 265 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 266 goto err; 267 268 s->internal->read_ahead = ctx->internal->read_ahead; 269 s->internal->msg_callback = ctx->internal->msg_callback; 270 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 271 s->verify_mode = ctx->verify_mode; 272 s->sid_ctx_length = ctx->sid_ctx_length; 273 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 274 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 275 s->internal->verify_callback = ctx->internal->default_verify_callback; 276 s->internal->generate_session_id = ctx->internal->generate_session_id; 277 278 s->param = X509_VERIFY_PARAM_new(); 279 if (!s->param) 280 goto err; 281 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 282 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 283 s->max_send_fragment = ctx->internal->max_send_fragment; 284 285 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 286 s->ctx = ctx; 287 s->internal->tlsext_debug_cb = 0; 288 s->internal->tlsext_debug_arg = NULL; 289 s->internal->tlsext_ticket_expected = 0; 290 s->tlsext_status_type = -1; 291 s->internal->tlsext_status_expected = 0; 292 s->internal->tlsext_ocsp_ids = NULL; 293 s->internal->tlsext_ocsp_exts = NULL; 294 s->internal->tlsext_ocsp_resp = NULL; 295 s->internal->tlsext_ocsp_resplen = -1; 296 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 297 s->initial_ctx = ctx; 298 299 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 300 s->internal->tlsext_ecpointformatlist = 301 calloc(ctx->internal->tlsext_ecpointformatlist_length, 302 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 303 if (s->internal->tlsext_ecpointformatlist == NULL) 304 goto err; 305 memcpy(s->internal->tlsext_ecpointformatlist, 306 ctx->internal->tlsext_ecpointformatlist, 307 ctx->internal->tlsext_ecpointformatlist_length * 308 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 309 s->internal->tlsext_ecpointformatlist_length = 310 ctx->internal->tlsext_ecpointformatlist_length; 311 } 312 if (ctx->internal->tlsext_supportedgroups != NULL) { 313 s->internal->tlsext_supportedgroups = 314 calloc(ctx->internal->tlsext_supportedgroups_length, 315 sizeof(ctx->internal->tlsext_supportedgroups[0])); 316 if (s->internal->tlsext_supportedgroups == NULL) 317 goto err; 318 memcpy(s->internal->tlsext_supportedgroups, 319 ctx->internal->tlsext_supportedgroups, 320 ctx->internal->tlsext_supportedgroups_length * 321 sizeof(ctx->internal->tlsext_supportedgroups[0])); 322 s->internal->tlsext_supportedgroups_length = 323 ctx->internal->tlsext_supportedgroups_length; 324 } 325 326 if (s->ctx->internal->alpn_client_proto_list != NULL) { 327 s->internal->alpn_client_proto_list = 328 malloc(s->ctx->internal->alpn_client_proto_list_len); 329 if (s->internal->alpn_client_proto_list == NULL) 330 goto err; 331 memcpy(s->internal->alpn_client_proto_list, 332 s->ctx->internal->alpn_client_proto_list, 333 s->ctx->internal->alpn_client_proto_list_len); 334 s->internal->alpn_client_proto_list_len = 335 s->ctx->internal->alpn_client_proto_list_len; 336 } 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 342 if (!s->method->internal->ssl_new(s)) 343 goto err; 344 345 s->references = 1; 346 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 347 348 SSL_clear(s); 349 350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 351 352 return (s); 353 354 err: 355 SSL_free(s); 356 SSLerrorx(ERR_R_MALLOC_FAILURE); 357 return (NULL); 358 } 359 360 int 361 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 362 unsigned int sid_ctx_len) 363 { 364 if (sid_ctx_len > sizeof ctx->sid_ctx) { 365 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 366 return (0); 367 } 368 ctx->sid_ctx_length = sid_ctx_len; 369 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 370 371 return (1); 372 } 373 374 int 375 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 376 unsigned int sid_ctx_len) 377 { 378 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 379 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 380 return (0); 381 } 382 ssl->sid_ctx_length = sid_ctx_len; 383 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 384 385 return (1); 386 } 387 388 int 389 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 390 { 391 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 392 ctx->internal->generate_session_id = cb; 393 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 394 return (1); 395 } 396 397 int 398 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 399 { 400 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 401 ssl->internal->generate_session_id = cb; 402 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 403 return (1); 404 } 405 406 int 407 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 408 unsigned int id_len) 409 { 410 /* 411 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 412 * shows how we can "construct" a session to give us the desired 413 * check - ie. to find if there's a session in the hash table 414 * that would conflict with any new session built out of this 415 * id/id_len and the ssl_version in use by this SSL. 416 */ 417 SSL_SESSION r, *p; 418 419 if (id_len > sizeof r.session_id) 420 return (0); 421 422 r.ssl_version = ssl->version; 423 r.session_id_length = id_len; 424 memcpy(r.session_id, id, id_len); 425 426 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 427 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 428 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 429 return (p != NULL); 430 } 431 432 int 433 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 434 { 435 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 436 } 437 438 int 439 SSL_set_purpose(SSL *s, int purpose) 440 { 441 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 442 } 443 444 int 445 SSL_CTX_set_trust(SSL_CTX *s, int trust) 446 { 447 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 448 } 449 450 int 451 SSL_set_trust(SSL *s, int trust) 452 { 453 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 454 } 455 456 int 457 SSL_set1_host(SSL *s, const char *hostname) 458 { 459 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 460 } 461 462 X509_VERIFY_PARAM * 463 SSL_CTX_get0_param(SSL_CTX *ctx) 464 { 465 return (ctx->param); 466 } 467 468 int 469 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 470 { 471 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 472 } 473 474 X509_VERIFY_PARAM * 475 SSL_get0_param(SSL *ssl) 476 { 477 return (ssl->param); 478 } 479 480 int 481 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482 { 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484 } 485 486 void 487 SSL_free(SSL *s) 488 { 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 BUF_MEM_free(s->internal->init_buf); 516 517 /* add extra stuff */ 518 sk_SSL_CIPHER_free(s->cipher_list); 519 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 520 521 /* Make the next call work :-) */ 522 if (s->session != NULL) { 523 ssl_clear_bad_session(s); 524 SSL_SESSION_free(s->session); 525 } 526 527 ssl_clear_cipher_state(s); 528 529 ssl_cert_free(s->cert); 530 531 free(s->tlsext_hostname); 532 SSL_CTX_free(s->initial_ctx); 533 534 free(s->internal->tlsext_ecpointformatlist); 535 free(s->internal->tlsext_supportedgroups); 536 537 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 538 X509_EXTENSION_free); 539 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 540 free(s->internal->tlsext_ocsp_resp); 541 542 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 543 544 if (s->method != NULL) 545 s->method->internal->ssl_free(s); 546 547 SSL_CTX_free(s->ctx); 548 549 free(s->internal->alpn_client_proto_list); 550 551 #ifndef OPENSSL_NO_SRTP 552 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 553 #endif 554 555 free(s->internal); 556 free(s); 557 } 558 559 int 560 SSL_up_ref(SSL *s) 561 { 562 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 563 return (refs > 1) ? 1 : 0; 564 } 565 566 void 567 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 568 { 569 /* If the output buffering BIO is still in place, remove it */ 570 if (s->bbio != NULL) { 571 if (s->wbio == s->bbio) { 572 s->wbio = s->wbio->next_bio; 573 s->bbio->next_bio = NULL; 574 } 575 } 576 577 if (s->rbio != rbio && s->rbio != s->wbio) 578 BIO_free_all(s->rbio); 579 if (s->wbio != wbio) 580 BIO_free_all(s->wbio); 581 s->rbio = rbio; 582 s->wbio = wbio; 583 } 584 585 BIO * 586 SSL_get_rbio(const SSL *s) 587 { 588 return (s->rbio); 589 } 590 591 BIO * 592 SSL_get_wbio(const SSL *s) 593 { 594 return (s->wbio); 595 } 596 597 int 598 SSL_get_fd(const SSL *s) 599 { 600 return (SSL_get_rfd(s)); 601 } 602 603 int 604 SSL_get_rfd(const SSL *s) 605 { 606 int ret = -1; 607 BIO *b, *r; 608 609 b = SSL_get_rbio(s); 610 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 611 if (r != NULL) 612 BIO_get_fd(r, &ret); 613 return (ret); 614 } 615 616 int 617 SSL_get_wfd(const SSL *s) 618 { 619 int ret = -1; 620 BIO *b, *r; 621 622 b = SSL_get_wbio(s); 623 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 624 if (r != NULL) 625 BIO_get_fd(r, &ret); 626 return (ret); 627 } 628 629 int 630 SSL_set_fd(SSL *s, int fd) 631 { 632 int ret = 0; 633 BIO *bio = NULL; 634 635 bio = BIO_new(BIO_s_socket()); 636 637 if (bio == NULL) { 638 SSLerror(s, ERR_R_BUF_LIB); 639 goto err; 640 } 641 BIO_set_fd(bio, fd, BIO_NOCLOSE); 642 SSL_set_bio(s, bio, bio); 643 ret = 1; 644 err: 645 return (ret); 646 } 647 648 int 649 SSL_set_wfd(SSL *s, int fd) 650 { 651 int ret = 0; 652 BIO *bio = NULL; 653 654 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 655 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 656 bio = BIO_new(BIO_s_socket()); 657 658 if (bio == NULL) { 659 SSLerror(s, ERR_R_BUF_LIB); 660 goto err; 661 } 662 BIO_set_fd(bio, fd, BIO_NOCLOSE); 663 SSL_set_bio(s, SSL_get_rbio(s), bio); 664 } else 665 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 666 ret = 1; 667 err: 668 return (ret); 669 } 670 671 int 672 SSL_set_rfd(SSL *s, int fd) 673 { 674 int ret = 0; 675 BIO *bio = NULL; 676 677 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 678 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 679 bio = BIO_new(BIO_s_socket()); 680 681 if (bio == NULL) { 682 SSLerror(s, ERR_R_BUF_LIB); 683 goto err; 684 } 685 BIO_set_fd(bio, fd, BIO_NOCLOSE); 686 SSL_set_bio(s, bio, SSL_get_wbio(s)); 687 } else 688 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 689 ret = 1; 690 err: 691 return (ret); 692 } 693 694 695 /* return length of latest Finished message we sent, copy to 'buf' */ 696 size_t 697 SSL_get_finished(const SSL *s, void *buf, size_t count) 698 { 699 size_t ret; 700 701 ret = S3I(s)->tmp.finish_md_len; 702 if (count > ret) 703 count = ret; 704 memcpy(buf, S3I(s)->tmp.finish_md, count); 705 return (ret); 706 } 707 708 /* return length of latest Finished message we expected, copy to 'buf' */ 709 size_t 710 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 711 { 712 size_t ret; 713 714 ret = S3I(s)->tmp.peer_finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 718 return (ret); 719 } 720 721 722 int 723 SSL_get_verify_mode(const SSL *s) 724 { 725 return (s->verify_mode); 726 } 727 728 int 729 SSL_get_verify_depth(const SSL *s) 730 { 731 return (X509_VERIFY_PARAM_get_depth(s->param)); 732 } 733 734 int 735 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 736 { 737 return (s->internal->verify_callback); 738 } 739 740 int 741 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 742 { 743 return (ctx->verify_mode); 744 } 745 746 int 747 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 748 { 749 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 750 } 751 752 int 753 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 754 { 755 return (ctx->internal->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->internal->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->internal->read_ahead = yes; 777 } 778 779 int 780 SSL_get_read_ahead(const SSL *s) 781 { 782 return (s->internal->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 (ssl3_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 (SSI(s)->sess_cert == NULL)) 824 r = NULL; 825 else 826 r = SSI(s)->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 int 841 SSL_copy_session_id(SSL *t, const SSL *f) 842 { 843 CERT *tmp; 844 845 /* Do we need to do SSL locking? */ 846 if (!SSL_set_session(t, SSL_get_session(f))) 847 return 0; 848 849 /* What if we are set up for one protocol but want to talk another? */ 850 if (t->method != f->method) { 851 t->method->internal->ssl_free(t); 852 t->method = f->method; 853 if (!t->method->internal->ssl_new(t)) 854 return 0; 855 } 856 857 tmp = t->cert; 858 if (f->cert != NULL) { 859 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 860 t->cert = f->cert; 861 } else 862 t->cert = NULL; 863 ssl_cert_free(tmp); 864 865 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 866 return 0; 867 868 return 1; 869 } 870 871 /* Fix this so it checks all the valid key/cert options */ 872 int 873 SSL_CTX_check_private_key(const SSL_CTX *ctx) 874 { 875 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 876 (ctx->internal->cert->key->x509 == NULL)) { 877 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 878 return (0); 879 } 880 if (ctx->internal->cert->key->privatekey == NULL) { 881 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 882 return (0); 883 } 884 return (X509_check_private_key(ctx->internal->cert->key->x509, 885 ctx->internal->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 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 894 return (0); 895 } 896 if (ssl->cert == NULL) { 897 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 898 return (0); 899 } 900 if (ssl->cert->key->x509 == NULL) { 901 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 902 return (0); 903 } 904 if (ssl->cert->key->privatekey == NULL) { 905 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 906 return (0); 907 } 908 return (X509_check_private_key(ssl->cert->key->x509, 909 ssl->cert->key->privatekey)); 910 } 911 912 int 913 SSL_accept(SSL *s) 914 { 915 if (s->internal->handshake_func == NULL) 916 SSL_set_accept_state(s); /* Not properly initialized yet */ 917 918 return (s->method->internal->ssl_accept(s)); 919 } 920 921 int 922 SSL_connect(SSL *s) 923 { 924 if (s->internal->handshake_func == NULL) 925 SSL_set_connect_state(s); /* Not properly initialized yet */ 926 927 return (s->method->internal->ssl_connect(s)); 928 } 929 930 int 931 SSL_is_server(const SSL *s) 932 { 933 return s->server; 934 } 935 936 long 937 SSL_get_default_timeout(const SSL *s) 938 { 939 return (s->method->internal->get_timeout()); 940 } 941 942 int 943 SSL_read(SSL *s, void *buf, int num) 944 { 945 if (s->internal->handshake_func == NULL) { 946 SSLerror(s, SSL_R_UNINITIALIZED); 947 return (-1); 948 } 949 950 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 951 s->internal->rwstate = SSL_NOTHING; 952 return (0); 953 } 954 return ssl3_read(s, buf, num); 955 } 956 957 int 958 SSL_peek(SSL *s, void *buf, int num) 959 { 960 if (s->internal->handshake_func == NULL) { 961 SSLerror(s, SSL_R_UNINITIALIZED); 962 return (-1); 963 } 964 965 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 966 return (0); 967 } 968 return ssl3_peek(s, buf, num); 969 } 970 971 int 972 SSL_write(SSL *s, const void *buf, int num) 973 { 974 if (s->internal->handshake_func == NULL) { 975 SSLerror(s, SSL_R_UNINITIALIZED); 976 return (-1); 977 } 978 979 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 980 s->internal->rwstate = SSL_NOTHING; 981 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 982 return (-1); 983 } 984 return ssl3_write(s, buf, num); 985 } 986 987 int 988 SSL_shutdown(SSL *s) 989 { 990 /* 991 * Note that this function behaves differently from what one might 992 * expect. Return values are 0 for no success (yet), 993 * 1 for success; but calling it once is usually not enough, 994 * even if blocking I/O is used (see ssl3_shutdown). 995 */ 996 997 if (s->internal->handshake_func == NULL) { 998 SSLerror(s, SSL_R_UNINITIALIZED); 999 return (-1); 1000 } 1001 1002 if (s != NULL && !SSL_in_init(s)) 1003 return (ssl3_shutdown(s)); 1004 1005 return (1); 1006 } 1007 1008 int 1009 SSL_renegotiate(SSL *s) 1010 { 1011 if (s->internal->renegotiate == 0) 1012 s->internal->renegotiate = 1; 1013 1014 s->internal->new_session = 1; 1015 1016 return (s->method->internal->ssl_renegotiate(s)); 1017 } 1018 1019 int 1020 SSL_renegotiate_abbreviated(SSL *s) 1021 { 1022 if (s->internal->renegotiate == 0) 1023 s->internal->renegotiate = 1; 1024 1025 s->internal->new_session = 0; 1026 1027 return (s->method->internal->ssl_renegotiate(s)); 1028 } 1029 1030 int 1031 SSL_renegotiate_pending(SSL *s) 1032 { 1033 /* 1034 * Becomes true when negotiation is requested; 1035 * false again once a handshake has finished. 1036 */ 1037 return (s->internal->renegotiate != 0); 1038 } 1039 1040 long 1041 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1042 { 1043 long l; 1044 1045 switch (cmd) { 1046 case SSL_CTRL_GET_READ_AHEAD: 1047 return (s->internal->read_ahead); 1048 case SSL_CTRL_SET_READ_AHEAD: 1049 l = s->internal->read_ahead; 1050 s->internal->read_ahead = larg; 1051 return (l); 1052 1053 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1054 s->internal->msg_callback_arg = parg; 1055 return (1); 1056 1057 case SSL_CTRL_OPTIONS: 1058 return (s->internal->options|=larg); 1059 case SSL_CTRL_CLEAR_OPTIONS: 1060 return (s->internal->options&=~larg); 1061 case SSL_CTRL_MODE: 1062 return (s->internal->mode|=larg); 1063 case SSL_CTRL_CLEAR_MODE: 1064 return (s->internal->mode &=~larg); 1065 case SSL_CTRL_GET_MAX_CERT_LIST: 1066 return (s->internal->max_cert_list); 1067 case SSL_CTRL_SET_MAX_CERT_LIST: 1068 l = s->internal->max_cert_list; 1069 s->internal->max_cert_list = larg; 1070 return (l); 1071 case SSL_CTRL_SET_MTU: 1072 #ifndef OPENSSL_NO_DTLS1 1073 if (larg < (long)dtls1_min_mtu()) 1074 return (0); 1075 #endif 1076 if (SSL_IS_DTLS(s)) { 1077 D1I(s)->mtu = larg; 1078 return (larg); 1079 } 1080 return (0); 1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1083 return (0); 1084 s->max_send_fragment = larg; 1085 return (1); 1086 case SSL_CTRL_GET_RI_SUPPORT: 1087 if (s->s3) 1088 return (S3I(s)->send_connection_binding); 1089 else return (0); 1090 default: 1091 if (SSL_IS_DTLS(s)) 1092 return dtls1_ctrl(s, cmd, larg, parg); 1093 return ssl3_ctrl(s, cmd, larg, parg); 1094 } 1095 } 1096 1097 long 1098 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1099 { 1100 switch (cmd) { 1101 case SSL_CTRL_SET_MSG_CALLBACK: 1102 s->internal->msg_callback = (void (*)(int write_p, int version, 1103 int content_type, const void *buf, size_t len, 1104 SSL *ssl, void *arg))(fp); 1105 return (1); 1106 1107 default: 1108 return (ssl3_callback_ctrl(s, cmd, fp)); 1109 } 1110 } 1111 1112 struct lhash_st_SSL_SESSION * 1113 SSL_CTX_sessions(SSL_CTX *ctx) 1114 { 1115 return (ctx->internal->sessions); 1116 } 1117 1118 long 1119 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1120 { 1121 long l; 1122 1123 switch (cmd) { 1124 case SSL_CTRL_GET_READ_AHEAD: 1125 return (ctx->internal->read_ahead); 1126 case SSL_CTRL_SET_READ_AHEAD: 1127 l = ctx->internal->read_ahead; 1128 ctx->internal->read_ahead = larg; 1129 return (l); 1130 1131 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1132 ctx->internal->msg_callback_arg = parg; 1133 return (1); 1134 1135 case SSL_CTRL_GET_MAX_CERT_LIST: 1136 return (ctx->internal->max_cert_list); 1137 case SSL_CTRL_SET_MAX_CERT_LIST: 1138 l = ctx->internal->max_cert_list; 1139 ctx->internal->max_cert_list = larg; 1140 return (l); 1141 1142 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1143 l = ctx->internal->session_cache_size; 1144 ctx->internal->session_cache_size = larg; 1145 return (l); 1146 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1147 return (ctx->internal->session_cache_size); 1148 case SSL_CTRL_SET_SESS_CACHE_MODE: 1149 l = ctx->internal->session_cache_mode; 1150 ctx->internal->session_cache_mode = larg; 1151 return (l); 1152 case SSL_CTRL_GET_SESS_CACHE_MODE: 1153 return (ctx->internal->session_cache_mode); 1154 1155 case SSL_CTRL_SESS_NUMBER: 1156 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1157 case SSL_CTRL_SESS_CONNECT: 1158 return (ctx->internal->stats.sess_connect); 1159 case SSL_CTRL_SESS_CONNECT_GOOD: 1160 return (ctx->internal->stats.sess_connect_good); 1161 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1162 return (ctx->internal->stats.sess_connect_renegotiate); 1163 case SSL_CTRL_SESS_ACCEPT: 1164 return (ctx->internal->stats.sess_accept); 1165 case SSL_CTRL_SESS_ACCEPT_GOOD: 1166 return (ctx->internal->stats.sess_accept_good); 1167 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1168 return (ctx->internal->stats.sess_accept_renegotiate); 1169 case SSL_CTRL_SESS_HIT: 1170 return (ctx->internal->stats.sess_hit); 1171 case SSL_CTRL_SESS_CB_HIT: 1172 return (ctx->internal->stats.sess_cb_hit); 1173 case SSL_CTRL_SESS_MISSES: 1174 return (ctx->internal->stats.sess_miss); 1175 case SSL_CTRL_SESS_TIMEOUTS: 1176 return (ctx->internal->stats.sess_timeout); 1177 case SSL_CTRL_SESS_CACHE_FULL: 1178 return (ctx->internal->stats.sess_cache_full); 1179 case SSL_CTRL_OPTIONS: 1180 return (ctx->internal->options|=larg); 1181 case SSL_CTRL_CLEAR_OPTIONS: 1182 return (ctx->internal->options&=~larg); 1183 case SSL_CTRL_MODE: 1184 return (ctx->internal->mode|=larg); 1185 case SSL_CTRL_CLEAR_MODE: 1186 return (ctx->internal->mode&=~larg); 1187 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1188 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1189 return (0); 1190 ctx->internal->max_send_fragment = larg; 1191 return (1); 1192 default: 1193 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1194 } 1195 } 1196 1197 long 1198 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1199 { 1200 switch (cmd) { 1201 case SSL_CTRL_SET_MSG_CALLBACK: 1202 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1203 int content_type, const void *buf, size_t len, SSL *ssl, 1204 void *arg))(fp); 1205 return (1); 1206 1207 default: 1208 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1209 } 1210 } 1211 1212 int 1213 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1214 { 1215 long l; 1216 1217 l = a->id - b->id; 1218 if (l == 0L) 1219 return (0); 1220 else 1221 return ((l > 0) ? 1:-1); 1222 } 1223 1224 int 1225 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1226 const SSL_CIPHER * const *bp) 1227 { 1228 long l; 1229 1230 l = (*ap)->id - (*bp)->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235 } 1236 1237 /* 1238 * Return a STACK of the ciphers available for the SSL and in order of 1239 * preference. 1240 */ 1241 STACK_OF(SSL_CIPHER) * 1242 SSL_get_ciphers(const SSL *s) 1243 { 1244 if (s != NULL) { 1245 if (s->cipher_list != NULL) { 1246 return (s->cipher_list); 1247 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1248 return (s->ctx->cipher_list); 1249 } 1250 } 1251 return (NULL); 1252 } 1253 1254 STACK_OF(SSL_CIPHER) * 1255 SSL_get_client_ciphers(const SSL *s) 1256 { 1257 if (s == NULL || s->session == NULL || !s->server) 1258 return NULL; 1259 return s->session->ciphers; 1260 } 1261 1262 STACK_OF(SSL_CIPHER) * 1263 SSL_get1_supported_ciphers(SSL *s) 1264 { 1265 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1266 const SSL_CIPHER *cipher; 1267 uint16_t min_vers, max_vers; 1268 int i; 1269 1270 if (s == NULL) 1271 return NULL; 1272 if (!ssl_supported_version_range(s, &min_vers, &max_vers)) 1273 return NULL; 1274 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1275 return NULL; 1276 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1277 return NULL; 1278 1279 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1280 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1281 goto err; 1282 if (!ssl_cipher_is_permitted(cipher, min_vers, max_vers)) 1283 continue; 1284 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1285 goto err; 1286 } 1287 1288 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1289 return supported_ciphers; 1290 1291 err: 1292 sk_SSL_CIPHER_free(supported_ciphers); 1293 return NULL; 1294 } 1295 1296 /* 1297 * Return a STACK of the ciphers available for the SSL and in order of 1298 * algorithm id. 1299 */ 1300 STACK_OF(SSL_CIPHER) * 1301 ssl_get_ciphers_by_id(SSL *s) 1302 { 1303 if (s != NULL) { 1304 if (s->internal->cipher_list_by_id != NULL) { 1305 return (s->internal->cipher_list_by_id); 1306 } else if ((s->ctx != NULL) && 1307 (s->ctx->internal->cipher_list_by_id != NULL)) { 1308 return (s->ctx->internal->cipher_list_by_id); 1309 } 1310 } 1311 return (NULL); 1312 } 1313 1314 /* See if we have any ECC cipher suites. */ 1315 int 1316 ssl_has_ecc_ciphers(SSL *s) 1317 { 1318 STACK_OF(SSL_CIPHER) *ciphers; 1319 unsigned long alg_k, alg_a; 1320 SSL_CIPHER *cipher; 1321 int i; 1322 1323 if (s->version == DTLS1_VERSION) 1324 return 0; 1325 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1326 return 0; 1327 1328 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1329 cipher = sk_SSL_CIPHER_value(ciphers, i); 1330 1331 alg_k = cipher->algorithm_mkey; 1332 alg_a = cipher->algorithm_auth; 1333 1334 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1335 return 1; 1336 } 1337 1338 return 0; 1339 } 1340 1341 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1342 const char * 1343 SSL_get_cipher_list(const SSL *s, int n) 1344 { 1345 SSL_CIPHER *c; 1346 STACK_OF(SSL_CIPHER) *sk; 1347 1348 if (s == NULL) 1349 return (NULL); 1350 sk = SSL_get_ciphers(s); 1351 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1352 return (NULL); 1353 c = sk_SSL_CIPHER_value(sk, n); 1354 if (c == NULL) 1355 return (NULL); 1356 return (c->name); 1357 } 1358 1359 STACK_OF(SSL_CIPHER) * 1360 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1361 { 1362 return ctx->cipher_list; 1363 } 1364 1365 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1366 int 1367 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1368 { 1369 STACK_OF(SSL_CIPHER) *sk; 1370 1371 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1372 &ctx->internal->cipher_list_by_id, str); 1373 /* 1374 * ssl_create_cipher_list may return an empty stack if it 1375 * was unable to find a cipher matching the given rule string 1376 * (for example if the rule string specifies a cipher which 1377 * has been disabled). This is not an error as far as 1378 * ssl_create_cipher_list is concerned, and hence 1379 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1380 * updated. 1381 */ 1382 if (sk == NULL) 1383 return (0); 1384 else if (sk_SSL_CIPHER_num(sk) == 0) { 1385 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1386 return (0); 1387 } 1388 return (1); 1389 } 1390 1391 /* Specify the ciphers to be used by the SSL. */ 1392 int 1393 SSL_set_cipher_list(SSL *s, const char *str) 1394 { 1395 STACK_OF(SSL_CIPHER) *sk; 1396 1397 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1398 &s->internal->cipher_list_by_id, str); 1399 /* see comment in SSL_CTX_set_cipher_list */ 1400 if (sk == NULL) 1401 return (0); 1402 else if (sk_SSL_CIPHER_num(sk) == 0) { 1403 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1404 return (0); 1405 } 1406 return (1); 1407 } 1408 1409 /* works well for SSLv2, not so good for SSLv3 */ 1410 char * 1411 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1412 { 1413 char *end; 1414 STACK_OF(SSL_CIPHER) *sk; 1415 SSL_CIPHER *c; 1416 size_t curlen = 0; 1417 int i; 1418 1419 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1420 return (NULL); 1421 1422 sk = s->session->ciphers; 1423 if (sk_SSL_CIPHER_num(sk) == 0) 1424 return (NULL); 1425 1426 buf[0] = '\0'; 1427 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1428 c = sk_SSL_CIPHER_value(sk, i); 1429 end = buf + curlen; 1430 if (strlcat(buf, c->name, len) >= len || 1431 (curlen = strlcat(buf, ":", len)) >= len) { 1432 /* remove truncated cipher from list */ 1433 *end = '\0'; 1434 break; 1435 } 1436 } 1437 /* remove trailing colon */ 1438 if ((end = strrchr(buf, ':')) != NULL) 1439 *end = '\0'; 1440 return (buf); 1441 } 1442 1443 /* 1444 * Return a servername extension value if provided in Client Hello, or NULL. 1445 * So far, only host_name types are defined (RFC 3546). 1446 */ 1447 const char * 1448 SSL_get_servername(const SSL *s, const int type) 1449 { 1450 if (type != TLSEXT_NAMETYPE_host_name) 1451 return (NULL); 1452 1453 return (s->session && !s->tlsext_hostname ? 1454 s->session->tlsext_hostname : 1455 s->tlsext_hostname); 1456 } 1457 1458 int 1459 SSL_get_servername_type(const SSL *s) 1460 { 1461 if (s->session && 1462 (!s->tlsext_hostname ? 1463 s->session->tlsext_hostname : s->tlsext_hostname)) 1464 return (TLSEXT_NAMETYPE_host_name); 1465 return (-1); 1466 } 1467 1468 /* 1469 * SSL_select_next_proto implements standard protocol selection. It is 1470 * expected that this function is called from the callback set by 1471 * SSL_CTX_set_alpn_select_cb. 1472 * 1473 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1474 * strings. The length byte itself is not included in the length. A byte 1475 * string of length 0 is invalid. No byte string may be truncated. 1476 * 1477 * It returns either: 1478 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1479 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1480 */ 1481 int 1482 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1483 const unsigned char *server, unsigned int server_len, 1484 const unsigned char *client, unsigned int client_len) 1485 { 1486 unsigned int i, j; 1487 const unsigned char *result; 1488 int status = OPENSSL_NPN_UNSUPPORTED; 1489 1490 /* 1491 * For each protocol in server preference order, 1492 * see if we support it. 1493 */ 1494 for (i = 0; i < server_len; ) { 1495 for (j = 0; j < client_len; ) { 1496 if (server[i] == client[j] && 1497 memcmp(&server[i + 1], 1498 &client[j + 1], server[i]) == 0) { 1499 /* We found a match */ 1500 result = &server[i]; 1501 status = OPENSSL_NPN_NEGOTIATED; 1502 goto found; 1503 } 1504 j += client[j]; 1505 j++; 1506 } 1507 i += server[i]; 1508 i++; 1509 } 1510 1511 /* There's no overlap between our protocols and the server's list. */ 1512 result = client; 1513 status = OPENSSL_NPN_NO_OVERLAP; 1514 1515 found: 1516 *out = (unsigned char *) result + 1; 1517 *outlen = result[0]; 1518 return (status); 1519 } 1520 1521 /* SSL_get0_next_proto_negotiated is deprecated. */ 1522 void 1523 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1524 unsigned *len) 1525 { 1526 *data = NULL; 1527 *len = 0; 1528 } 1529 1530 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1531 void 1532 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1533 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1534 { 1535 } 1536 1537 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1538 void 1539 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1540 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1541 unsigned int inlen, void *arg), void *arg) 1542 { 1543 } 1544 1545 /* 1546 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1547 * protocols, which must be in wire-format (i.e. a series of non-empty, 1548 * 8-bit length-prefixed strings). Returns 0 on success. 1549 */ 1550 int 1551 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1552 unsigned int protos_len) 1553 { 1554 int failed = 1; 1555 1556 if (protos == NULL || protos_len == 0) 1557 goto err; 1558 1559 free(ctx->internal->alpn_client_proto_list); 1560 ctx->internal->alpn_client_proto_list = NULL; 1561 ctx->internal->alpn_client_proto_list_len = 0; 1562 1563 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1564 == NULL) 1565 goto err; 1566 ctx->internal->alpn_client_proto_list_len = protos_len; 1567 1568 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1569 1570 failed = 0; 1571 1572 err: 1573 /* NOTE: Return values are the reverse of what you expect. */ 1574 return (failed); 1575 } 1576 1577 /* 1578 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1579 * protocols, which must be in wire-format (i.e. a series of non-empty, 1580 * 8-bit length-prefixed strings). Returns 0 on success. 1581 */ 1582 int 1583 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1584 unsigned int protos_len) 1585 { 1586 int failed = 1; 1587 1588 if (protos == NULL || protos_len == 0) 1589 goto err; 1590 1591 free(ssl->internal->alpn_client_proto_list); 1592 ssl->internal->alpn_client_proto_list = NULL; 1593 ssl->internal->alpn_client_proto_list_len = 0; 1594 1595 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1596 == NULL) 1597 goto err; 1598 ssl->internal->alpn_client_proto_list_len = protos_len; 1599 1600 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1601 1602 failed = 0; 1603 1604 err: 1605 /* NOTE: Return values are the reverse of what you expect. */ 1606 return (failed); 1607 } 1608 1609 /* 1610 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1611 * ClientHello processing in order to select an ALPN protocol from the 1612 * client's list of offered protocols. 1613 */ 1614 void 1615 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1616 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1617 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1618 { 1619 ctx->internal->alpn_select_cb = cb; 1620 ctx->internal->alpn_select_cb_arg = arg; 1621 } 1622 1623 /* 1624 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1625 * it sets data to point to len bytes of protocol name (not including the 1626 * leading length-prefix byte). If the server didn't respond with* a negotiated 1627 * protocol then len will be zero. 1628 */ 1629 void 1630 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1631 unsigned *len) 1632 { 1633 *data = NULL; 1634 *len = 0; 1635 1636 *data = ssl->s3->internal->alpn_selected; 1637 *len = ssl->s3->internal->alpn_selected_len; 1638 } 1639 1640 int 1641 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1642 const char *label, size_t llen, const unsigned char *p, size_t plen, 1643 int use_context) 1644 { 1645 return (tls1_export_keying_material(s, out, olen, 1646 label, llen, p, plen, use_context)); 1647 } 1648 1649 static unsigned long 1650 ssl_session_hash(const SSL_SESSION *a) 1651 { 1652 unsigned long l; 1653 1654 l = (unsigned long) 1655 ((unsigned int) a->session_id[0] )| 1656 ((unsigned int) a->session_id[1]<< 8L)| 1657 ((unsigned long)a->session_id[2]<<16L)| 1658 ((unsigned long)a->session_id[3]<<24L); 1659 return (l); 1660 } 1661 1662 /* 1663 * NB: If this function (or indeed the hash function which uses a sort of 1664 * coarser function than this one) is changed, ensure 1665 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1666 * able to construct an SSL_SESSION that will collide with any existing session 1667 * with a matching session ID. 1668 */ 1669 static int 1670 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1671 { 1672 if (a->ssl_version != b->ssl_version) 1673 return (1); 1674 if (a->session_id_length != b->session_id_length) 1675 return (1); 1676 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1677 return (1); 1678 return (0); 1679 } 1680 1681 /* 1682 * These wrapper functions should remain rather than redeclaring 1683 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1684 * variable. The reason is that the functions aren't static, they're exposed via 1685 * ssl.h. 1686 */ 1687 static unsigned long 1688 ssl_session_LHASH_HASH(const void *arg) 1689 { 1690 const SSL_SESSION *a = arg; 1691 1692 return ssl_session_hash(a); 1693 } 1694 1695 static int 1696 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1697 { 1698 const SSL_SESSION *a = arg1; 1699 const SSL_SESSION *b = arg2; 1700 1701 return ssl_session_cmp(a, b); 1702 } 1703 1704 SSL_CTX * 1705 SSL_CTX_new(const SSL_METHOD *meth) 1706 { 1707 SSL_CTX *ret; 1708 1709 if (!OPENSSL_init_ssl(0, NULL)) { 1710 SSLerrorx(SSL_R_LIBRARY_BUG); 1711 return (NULL); 1712 } 1713 1714 if (meth == NULL) { 1715 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1716 return (NULL); 1717 } 1718 1719 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1720 SSLerrorx(ERR_R_MALLOC_FAILURE); 1721 return (NULL); 1722 } 1723 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1724 free(ret); 1725 SSLerrorx(ERR_R_MALLOC_FAILURE); 1726 return (NULL); 1727 } 1728 1729 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1730 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1731 goto err; 1732 } 1733 1734 ret->method = meth; 1735 ret->internal->min_version = meth->internal->min_version; 1736 ret->internal->max_version = meth->internal->max_version; 1737 1738 ret->cert_store = NULL; 1739 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1740 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1741 ret->internal->session_cache_head = NULL; 1742 ret->internal->session_cache_tail = NULL; 1743 1744 /* We take the system default */ 1745 ret->session_timeout = meth->internal->get_timeout(); 1746 1747 ret->internal->new_session_cb = 0; 1748 ret->internal->remove_session_cb = 0; 1749 ret->internal->get_session_cb = 0; 1750 ret->internal->generate_session_id = 0; 1751 1752 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1753 1754 ret->references = 1; 1755 ret->internal->quiet_shutdown = 0; 1756 1757 ret->internal->info_callback = NULL; 1758 1759 ret->internal->app_verify_callback = 0; 1760 ret->internal->app_verify_arg = NULL; 1761 1762 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1763 ret->internal->read_ahead = 0; 1764 ret->internal->msg_callback = 0; 1765 ret->internal->msg_callback_arg = NULL; 1766 ret->verify_mode = SSL_VERIFY_NONE; 1767 ret->sid_ctx_length = 0; 1768 ret->internal->default_verify_callback = NULL; 1769 1770 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1771 goto err; 1772 1773 ret->default_passwd_callback = 0; 1774 ret->default_passwd_callback_userdata = NULL; 1775 ret->internal->client_cert_cb = 0; 1776 ret->internal->app_gen_cookie_cb = 0; 1777 ret->internal->app_verify_cookie_cb = 0; 1778 1779 ret->internal->sessions = lh_SSL_SESSION_new(); 1780 if (ret->internal->sessions == NULL) 1781 goto err; 1782 ret->cert_store = X509_STORE_new(); 1783 if (ret->cert_store == NULL) 1784 goto err; 1785 1786 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1787 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1788 if (ret->cipher_list == NULL || 1789 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1790 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1791 goto err2; 1792 } 1793 1794 ret->param = X509_VERIFY_PARAM_new(); 1795 if (!ret->param) 1796 goto err; 1797 1798 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1799 goto err; 1800 1801 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1802 1803 ret->extra_certs = NULL; 1804 1805 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1806 1807 ret->internal->tlsext_servername_callback = 0; 1808 ret->internal->tlsext_servername_arg = NULL; 1809 1810 /* Setup RFC4507 ticket keys */ 1811 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1812 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1813 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1814 1815 ret->internal->tlsext_status_cb = 0; 1816 ret->internal->tlsext_status_arg = NULL; 1817 1818 #ifndef OPENSSL_NO_ENGINE 1819 ret->internal->client_cert_engine = NULL; 1820 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1821 #define eng_strx(x) #x 1822 #define eng_str(x) eng_strx(x) 1823 /* Use specific client engine automatically... ignore errors */ 1824 { 1825 ENGINE *eng; 1826 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1827 if (!eng) { 1828 ERR_clear_error(); 1829 ENGINE_load_builtin_engines(); 1830 eng = ENGINE_by_id(eng_str( 1831 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1832 } 1833 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1834 ERR_clear_error(); 1835 } 1836 #endif 1837 #endif 1838 /* 1839 * Default is to connect to non-RI servers. When RI is more widely 1840 * deployed might change this. 1841 */ 1842 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1843 1844 return (ret); 1845 err: 1846 SSLerrorx(ERR_R_MALLOC_FAILURE); 1847 err2: 1848 SSL_CTX_free(ret); 1849 return (NULL); 1850 } 1851 1852 void 1853 SSL_CTX_free(SSL_CTX *ctx) 1854 { 1855 int i; 1856 1857 if (ctx == NULL) 1858 return; 1859 1860 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1861 if (i > 0) 1862 return; 1863 1864 X509_VERIFY_PARAM_free(ctx->param); 1865 1866 /* 1867 * Free internal session cache. However: the remove_cb() may reference 1868 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1869 * after the sessions were flushed. 1870 * As the ex_data handling routines might also touch the session cache, 1871 * the most secure solution seems to be: empty (flush) the cache, then 1872 * free ex_data, then finally free the cache. 1873 * (See ticket [openssl.org #212].) 1874 */ 1875 if (ctx->internal->sessions != NULL) 1876 SSL_CTX_flush_sessions(ctx, 0); 1877 1878 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1879 1880 lh_SSL_SESSION_free(ctx->internal->sessions); 1881 1882 X509_STORE_free(ctx->cert_store); 1883 sk_SSL_CIPHER_free(ctx->cipher_list); 1884 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1885 ssl_cert_free(ctx->internal->cert); 1886 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1887 sk_X509_pop_free(ctx->extra_certs, X509_free); 1888 1889 #ifndef OPENSSL_NO_SRTP 1890 if (ctx->internal->srtp_profiles) 1891 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1892 #endif 1893 1894 #ifndef OPENSSL_NO_ENGINE 1895 ENGINE_finish(ctx->internal->client_cert_engine); 1896 #endif 1897 1898 free(ctx->internal->tlsext_ecpointformatlist); 1899 free(ctx->internal->tlsext_supportedgroups); 1900 1901 free(ctx->internal->alpn_client_proto_list); 1902 1903 free(ctx->internal); 1904 free(ctx); 1905 } 1906 1907 int 1908 SSL_CTX_up_ref(SSL_CTX *ctx) 1909 { 1910 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1911 return ((refs > 1) ? 1 : 0); 1912 } 1913 1914 pem_password_cb * 1915 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1916 { 1917 return (ctx->default_passwd_callback); 1918 } 1919 1920 void 1921 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1922 { 1923 ctx->default_passwd_callback = cb; 1924 } 1925 1926 void * 1927 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 1928 { 1929 return ctx->default_passwd_callback_userdata; 1930 } 1931 1932 void 1933 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1934 { 1935 ctx->default_passwd_callback_userdata = u; 1936 } 1937 1938 void 1939 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1940 void *), void *arg) 1941 { 1942 ctx->internal->app_verify_callback = cb; 1943 ctx->internal->app_verify_arg = arg; 1944 } 1945 1946 void 1947 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1948 { 1949 ctx->verify_mode = mode; 1950 ctx->internal->default_verify_callback = cb; 1951 } 1952 1953 void 1954 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1955 { 1956 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1957 } 1958 1959 void 1960 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1961 { 1962 int rsa_enc, rsa_sign, dh_tmp; 1963 int have_ecc_cert; 1964 unsigned long mask_k, mask_a; 1965 X509 *x = NULL; 1966 CERT_PKEY *cpk; 1967 1968 if (c == NULL) 1969 return; 1970 1971 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 1972 c->dh_tmp_auto != 0); 1973 1974 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1975 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1976 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1977 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1978 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1979 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1980 1981 mask_k = 0; 1982 mask_a = 0; 1983 1984 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1985 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1986 mask_k |= SSL_kGOST; 1987 mask_a |= SSL_aGOST01; 1988 } 1989 1990 if (rsa_enc) 1991 mask_k |= SSL_kRSA; 1992 1993 if (dh_tmp) 1994 mask_k |= SSL_kDHE; 1995 1996 if (rsa_enc || rsa_sign) 1997 mask_a |= SSL_aRSA; 1998 1999 mask_a |= SSL_aNULL; 2000 2001 /* 2002 * An ECC certificate may be usable for ECDH and/or 2003 * ECDSA cipher suites depending on the key usage extension. 2004 */ 2005 if (have_ecc_cert) { 2006 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2007 2008 /* This call populates extension flags (ex_flags). */ 2009 X509_check_purpose(x, -1, 0); 2010 2011 /* Key usage, if present, must allow signing. */ 2012 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2013 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2014 mask_a |= SSL_aECDSA; 2015 } 2016 2017 mask_k |= SSL_kECDHE; 2018 2019 c->mask_k = mask_k; 2020 c->mask_a = mask_a; 2021 c->valid = 1; 2022 } 2023 2024 /* See if this handshake is using an ECC cipher suite. */ 2025 int 2026 ssl_using_ecc_cipher(SSL *s) 2027 { 2028 unsigned long alg_a, alg_k; 2029 2030 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2031 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2032 2033 return SSI(s)->tlsext_ecpointformatlist != NULL && 2034 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2035 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2036 } 2037 2038 int 2039 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2040 { 2041 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2042 unsigned long alg_a; 2043 2044 alg_a = cs->algorithm_auth; 2045 2046 if (alg_a & SSL_aECDSA) { 2047 /* This call populates extension flags (ex_flags). */ 2048 X509_check_purpose(x, -1, 0); 2049 2050 /* Key usage, if present, must allow signing. */ 2051 if ((x->ex_flags & EXFLAG_KUSAGE) && 2052 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2053 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2054 return (0); 2055 } 2056 } 2057 2058 return (1); 2059 } 2060 2061 CERT_PKEY * 2062 ssl_get_server_send_pkey(const SSL *s) 2063 { 2064 unsigned long alg_a; 2065 CERT *c; 2066 int i; 2067 2068 c = s->cert; 2069 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2070 2071 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2072 2073 if (alg_a & SSL_aECDSA) { 2074 i = SSL_PKEY_ECC; 2075 } else if (alg_a & SSL_aRSA) { 2076 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2077 i = SSL_PKEY_RSA_SIGN; 2078 else 2079 i = SSL_PKEY_RSA_ENC; 2080 } else if (alg_a & SSL_aGOST01) { 2081 i = SSL_PKEY_GOST01; 2082 } else { /* if (alg_a & SSL_aNULL) */ 2083 SSLerror(s, ERR_R_INTERNAL_ERROR); 2084 return (NULL); 2085 } 2086 2087 return (c->pkeys + i); 2088 } 2089 2090 EVP_PKEY * 2091 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2092 const struct ssl_sigalg **sap) 2093 { 2094 const struct ssl_sigalg *sigalg = NULL; 2095 EVP_PKEY *pkey = NULL; 2096 unsigned long alg_a; 2097 CERT *c; 2098 int idx = -1; 2099 2100 alg_a = cipher->algorithm_auth; 2101 c = s->cert; 2102 2103 if (alg_a & SSL_aRSA) { 2104 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2105 idx = SSL_PKEY_RSA_SIGN; 2106 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2107 idx = SSL_PKEY_RSA_ENC; 2108 } else if ((alg_a & SSL_aECDSA) && 2109 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2110 idx = SSL_PKEY_ECC; 2111 if (idx == -1) { 2112 SSLerror(s, ERR_R_INTERNAL_ERROR); 2113 return (NULL); 2114 } 2115 2116 pkey = c->pkeys[idx].privatekey; 2117 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2118 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2119 return (NULL); 2120 } 2121 *pmd = sigalg->md(); 2122 *sap = sigalg; 2123 2124 return (pkey); 2125 } 2126 2127 DH * 2128 ssl_get_auto_dh(SSL *s) 2129 { 2130 CERT_PKEY *cpk; 2131 int keylen; 2132 DH *dhp; 2133 2134 if (s->cert->dh_tmp_auto == 2) { 2135 keylen = 1024; 2136 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2137 keylen = 1024; 2138 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2139 keylen = 3072; 2140 } else { 2141 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2142 return (NULL); 2143 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2144 return (NULL); 2145 keylen = EVP_PKEY_bits(cpk->privatekey); 2146 } 2147 2148 if ((dhp = DH_new()) == NULL) 2149 return (NULL); 2150 2151 dhp->g = BN_new(); 2152 if (dhp->g != NULL) 2153 BN_set_word(dhp->g, 2); 2154 2155 if (keylen >= 8192) 2156 dhp->p = get_rfc3526_prime_8192(NULL); 2157 else if (keylen >= 4096) 2158 dhp->p = get_rfc3526_prime_4096(NULL); 2159 else if (keylen >= 3072) 2160 dhp->p = get_rfc3526_prime_3072(NULL); 2161 else if (keylen >= 2048) 2162 dhp->p = get_rfc3526_prime_2048(NULL); 2163 else if (keylen >= 1536) 2164 dhp->p = get_rfc3526_prime_1536(NULL); 2165 else 2166 dhp->p = get_rfc2409_prime_1024(NULL); 2167 2168 if (dhp->p == NULL || dhp->g == NULL) { 2169 DH_free(dhp); 2170 return (NULL); 2171 } 2172 return (dhp); 2173 } 2174 2175 void 2176 ssl_update_cache(SSL *s, int mode) 2177 { 2178 int i; 2179 2180 /* 2181 * If the session_id_length is 0, we are not supposed to cache it, 2182 * and it would be rather hard to do anyway :-) 2183 */ 2184 if (s->session->session_id_length == 0) 2185 return; 2186 2187 i = s->session_ctx->internal->session_cache_mode; 2188 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2189 || SSL_CTX_add_session(s->session_ctx, s->session)) 2190 && (s->session_ctx->internal->new_session_cb != NULL)) { 2191 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2192 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2193 SSL_SESSION_free(s->session); 2194 } 2195 2196 /* auto flush every 255 connections */ 2197 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2198 ((i & mode) == mode)) { 2199 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2200 s->session_ctx->internal->stats.sess_connect_good : 2201 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2202 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2203 } 2204 } 2205 } 2206 2207 const SSL_METHOD * 2208 SSL_get_ssl_method(SSL *s) 2209 { 2210 return (s->method); 2211 } 2212 2213 int 2214 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2215 { 2216 int conn = -1; 2217 int ret = 1; 2218 2219 if (s->method != meth) { 2220 if (s->internal->handshake_func != NULL) 2221 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2222 2223 if (s->method->internal->version == meth->internal->version) 2224 s->method = meth; 2225 else { 2226 s->method->internal->ssl_free(s); 2227 s->method = meth; 2228 ret = s->method->internal->ssl_new(s); 2229 } 2230 2231 if (conn == 1) 2232 s->internal->handshake_func = meth->internal->ssl_connect; 2233 else if (conn == 0) 2234 s->internal->handshake_func = meth->internal->ssl_accept; 2235 } 2236 return (ret); 2237 } 2238 2239 int 2240 SSL_get_error(const SSL *s, int i) 2241 { 2242 int reason; 2243 unsigned long l; 2244 BIO *bio; 2245 2246 if (i > 0) 2247 return (SSL_ERROR_NONE); 2248 2249 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2250 * etc, where we do encode the error */ 2251 if ((l = ERR_peek_error()) != 0) { 2252 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2253 return (SSL_ERROR_SYSCALL); 2254 else 2255 return (SSL_ERROR_SSL); 2256 } 2257 2258 if ((i < 0) && SSL_want_read(s)) { 2259 bio = SSL_get_rbio(s); 2260 if (BIO_should_read(bio)) { 2261 return (SSL_ERROR_WANT_READ); 2262 } else if (BIO_should_write(bio)) { 2263 /* 2264 * This one doesn't make too much sense... We never 2265 * try to write to the rbio, and an application 2266 * program where rbio and wbio are separate couldn't 2267 * even know what it should wait for. However if we 2268 * ever set s->internal->rwstate incorrectly (so that we have 2269 * SSL_want_read(s) instead of SSL_want_write(s)) 2270 * and rbio and wbio *are* the same, this test works 2271 * around that bug; so it might be safer to keep it. 2272 */ 2273 return (SSL_ERROR_WANT_WRITE); 2274 } else if (BIO_should_io_special(bio)) { 2275 reason = BIO_get_retry_reason(bio); 2276 if (reason == BIO_RR_CONNECT) 2277 return (SSL_ERROR_WANT_CONNECT); 2278 else if (reason == BIO_RR_ACCEPT) 2279 return (SSL_ERROR_WANT_ACCEPT); 2280 else 2281 return (SSL_ERROR_SYSCALL); /* unknown */ 2282 } 2283 } 2284 2285 if ((i < 0) && SSL_want_write(s)) { 2286 bio = SSL_get_wbio(s); 2287 if (BIO_should_write(bio)) { 2288 return (SSL_ERROR_WANT_WRITE); 2289 } else if (BIO_should_read(bio)) { 2290 /* 2291 * See above (SSL_want_read(s) with 2292 * BIO_should_write(bio)) 2293 */ 2294 return (SSL_ERROR_WANT_READ); 2295 } else if (BIO_should_io_special(bio)) { 2296 reason = BIO_get_retry_reason(bio); 2297 if (reason == BIO_RR_CONNECT) 2298 return (SSL_ERROR_WANT_CONNECT); 2299 else if (reason == BIO_RR_ACCEPT) 2300 return (SSL_ERROR_WANT_ACCEPT); 2301 else 2302 return (SSL_ERROR_SYSCALL); 2303 } 2304 } 2305 if ((i < 0) && SSL_want_x509_lookup(s)) { 2306 return (SSL_ERROR_WANT_X509_LOOKUP); 2307 } 2308 2309 if (i == 0) { 2310 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2311 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2312 return (SSL_ERROR_ZERO_RETURN); 2313 } 2314 return (SSL_ERROR_SYSCALL); 2315 } 2316 2317 int 2318 SSL_do_handshake(SSL *s) 2319 { 2320 int ret = 1; 2321 2322 if (s->internal->handshake_func == NULL) { 2323 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2324 return (-1); 2325 } 2326 2327 s->method->internal->ssl_renegotiate_check(s); 2328 2329 if (SSL_in_init(s) || SSL_in_before(s)) { 2330 ret = s->internal->handshake_func(s); 2331 } 2332 return (ret); 2333 } 2334 2335 /* 2336 * For the next 2 functions, SSL_clear() sets shutdown and so 2337 * one of these calls will reset it 2338 */ 2339 void 2340 SSL_set_accept_state(SSL *s) 2341 { 2342 s->server = 1; 2343 s->internal->shutdown = 0; 2344 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2345 s->internal->handshake_func = s->method->internal->ssl_accept; 2346 ssl_clear_cipher_state(s); 2347 } 2348 2349 void 2350 SSL_set_connect_state(SSL *s) 2351 { 2352 s->server = 0; 2353 s->internal->shutdown = 0; 2354 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2355 s->internal->handshake_func = s->method->internal->ssl_connect; 2356 ssl_clear_cipher_state(s); 2357 } 2358 2359 int 2360 ssl_undefined_function(SSL *s) 2361 { 2362 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2363 return (0); 2364 } 2365 2366 int 2367 ssl_undefined_void_function(void) 2368 { 2369 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2370 return (0); 2371 } 2372 2373 int 2374 ssl_undefined_const_function(const SSL *s) 2375 { 2376 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2377 return (0); 2378 } 2379 2380 const char * 2381 ssl_version_string(int ver) 2382 { 2383 switch (ver) { 2384 case DTLS1_VERSION: 2385 return (SSL_TXT_DTLS1); 2386 case TLS1_VERSION: 2387 return (SSL_TXT_TLSV1); 2388 case TLS1_1_VERSION: 2389 return (SSL_TXT_TLSV1_1); 2390 case TLS1_2_VERSION: 2391 return (SSL_TXT_TLSV1_2); 2392 case TLS1_3_VERSION: 2393 return (SSL_TXT_TLSV1_3); 2394 default: 2395 return ("unknown"); 2396 } 2397 } 2398 2399 const char * 2400 SSL_get_version(const SSL *s) 2401 { 2402 return ssl_version_string(s->version); 2403 } 2404 2405 SSL * 2406 SSL_dup(SSL *s) 2407 { 2408 STACK_OF(X509_NAME) *sk; 2409 X509_NAME *xn; 2410 SSL *ret; 2411 int i; 2412 2413 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2414 goto err; 2415 2416 ret->version = s->version; 2417 ret->internal->type = s->internal->type; 2418 ret->method = s->method; 2419 2420 if (s->session != NULL) { 2421 if (!SSL_copy_session_id(ret, s)) 2422 goto err; 2423 } else { 2424 /* 2425 * No session has been established yet, so we have to expect 2426 * that s->cert or ret->cert will be changed later -- 2427 * they should not both point to the same object, 2428 * and thus we can't use SSL_copy_session_id. 2429 */ 2430 2431 ret->method->internal->ssl_free(ret); 2432 ret->method = s->method; 2433 ret->method->internal->ssl_new(ret); 2434 2435 ssl_cert_free(ret->cert); 2436 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2437 goto err; 2438 2439 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2440 s->sid_ctx_length)) 2441 goto err; 2442 } 2443 2444 ret->internal->options = s->internal->options; 2445 ret->internal->mode = s->internal->mode; 2446 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2447 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2448 ret->internal->msg_callback = s->internal->msg_callback; 2449 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2450 SSL_set_verify(ret, SSL_get_verify_mode(s), 2451 SSL_get_verify_callback(s)); 2452 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2453 ret->internal->generate_session_id = s->internal->generate_session_id; 2454 2455 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2456 2457 ret->internal->debug = s->internal->debug; 2458 2459 /* copy app data, a little dangerous perhaps */ 2460 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2461 &ret->internal->ex_data, &s->internal->ex_data)) 2462 goto err; 2463 2464 /* setup rbio, and wbio */ 2465 if (s->rbio != NULL) { 2466 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2467 goto err; 2468 } 2469 if (s->wbio != NULL) { 2470 if (s->wbio != s->rbio) { 2471 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2472 goto err; 2473 } else 2474 ret->wbio = ret->rbio; 2475 } 2476 ret->internal->rwstate = s->internal->rwstate; 2477 ret->internal->in_handshake = s->internal->in_handshake; 2478 ret->internal->handshake_func = s->internal->handshake_func; 2479 ret->server = s->server; 2480 ret->internal->renegotiate = s->internal->renegotiate; 2481 ret->internal->new_session = s->internal->new_session; 2482 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2483 ret->internal->shutdown = s->internal->shutdown; 2484 /* SSL_dup does not really work at any state, though */ 2485 S3I(ret)->hs.state = S3I(s)->hs.state; 2486 ret->internal->rstate = s->internal->rstate; 2487 2488 /* 2489 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2490 * ret->init_off 2491 */ 2492 ret->internal->init_num = 0; 2493 2494 ret->internal->hit = s->internal->hit; 2495 2496 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2497 2498 /* dup the cipher_list and cipher_list_by_id stacks */ 2499 if (s->cipher_list != NULL) { 2500 if ((ret->cipher_list = 2501 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2502 goto err; 2503 } 2504 if (s->internal->cipher_list_by_id != NULL) { 2505 if ((ret->internal->cipher_list_by_id = 2506 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2507 goto err; 2508 } 2509 2510 /* Dup the client_CA list */ 2511 if (s->internal->client_CA != NULL) { 2512 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2513 ret->internal->client_CA = sk; 2514 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2515 xn = sk_X509_NAME_value(sk, i); 2516 if (sk_X509_NAME_set(sk, i, 2517 X509_NAME_dup(xn)) == NULL) { 2518 X509_NAME_free(xn); 2519 goto err; 2520 } 2521 } 2522 } 2523 2524 return ret; 2525 err: 2526 SSL_free(ret); 2527 return NULL; 2528 } 2529 2530 void 2531 ssl_clear_cipher_state(SSL *s) 2532 { 2533 ssl_clear_cipher_read_state(s); 2534 ssl_clear_cipher_write_state(s); 2535 } 2536 2537 void 2538 ssl_clear_cipher_read_state(SSL *s) 2539 { 2540 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2541 s->enc_read_ctx = NULL; 2542 EVP_MD_CTX_free(s->read_hash); 2543 s->read_hash = NULL; 2544 2545 if (s->internal->aead_read_ctx != NULL) { 2546 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2547 free(s->internal->aead_read_ctx); 2548 s->internal->aead_read_ctx = NULL; 2549 } 2550 } 2551 2552 void 2553 ssl_clear_cipher_write_state(SSL *s) 2554 { 2555 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2556 s->internal->enc_write_ctx = NULL; 2557 EVP_MD_CTX_free(s->internal->write_hash); 2558 s->internal->write_hash = NULL; 2559 2560 if (s->internal->aead_write_ctx != NULL) { 2561 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2562 free(s->internal->aead_write_ctx); 2563 s->internal->aead_write_ctx = NULL; 2564 } 2565 } 2566 2567 /* Fix this function so that it takes an optional type parameter */ 2568 X509 * 2569 SSL_get_certificate(const SSL *s) 2570 { 2571 return (s->cert->key->x509); 2572 } 2573 2574 /* Fix this function so that it takes an optional type parameter */ 2575 EVP_PKEY * 2576 SSL_get_privatekey(const SSL *s) 2577 { 2578 return (s->cert->key->privatekey); 2579 } 2580 2581 const SSL_CIPHER * 2582 SSL_get_current_cipher(const SSL *s) 2583 { 2584 if ((s->session != NULL) && (s->session->cipher != NULL)) 2585 return (s->session->cipher); 2586 return (NULL); 2587 } 2588 const void * 2589 SSL_get_current_compression(SSL *s) 2590 { 2591 return (NULL); 2592 } 2593 2594 const void * 2595 SSL_get_current_expansion(SSL *s) 2596 { 2597 return (NULL); 2598 } 2599 2600 size_t 2601 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2602 { 2603 size_t len = sizeof(s->s3->client_random); 2604 2605 if (out == NULL) 2606 return len; 2607 2608 if (len > max_out) 2609 len = max_out; 2610 2611 memcpy(out, s->s3->client_random, len); 2612 2613 return len; 2614 } 2615 2616 size_t 2617 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2618 { 2619 size_t len = sizeof(s->s3->server_random); 2620 2621 if (out == NULL) 2622 return len; 2623 2624 if (len > max_out) 2625 len = max_out; 2626 2627 memcpy(out, s->s3->server_random, len); 2628 2629 return len; 2630 } 2631 2632 int 2633 ssl_init_wbio_buffer(SSL *s, int push) 2634 { 2635 BIO *bbio; 2636 2637 if (s->bbio == NULL) { 2638 bbio = BIO_new(BIO_f_buffer()); 2639 if (bbio == NULL) 2640 return (0); 2641 s->bbio = bbio; 2642 } else { 2643 bbio = s->bbio; 2644 if (s->bbio == s->wbio) 2645 s->wbio = BIO_pop(s->wbio); 2646 } 2647 (void)BIO_reset(bbio); 2648 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2649 if (!BIO_set_read_buffer_size(bbio, 1)) { 2650 SSLerror(s, 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 == NULL) 2667 return; 2668 2669 if (s->bbio == NULL) 2670 return; 2671 2672 if (s->bbio == s->wbio) { 2673 /* remove buffering */ 2674 s->wbio = BIO_pop(s->wbio); 2675 } 2676 BIO_free(s->bbio); 2677 s->bbio = NULL; 2678 } 2679 2680 void 2681 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2682 { 2683 ctx->internal->quiet_shutdown = mode; 2684 } 2685 2686 int 2687 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2688 { 2689 return (ctx->internal->quiet_shutdown); 2690 } 2691 2692 void 2693 SSL_set_quiet_shutdown(SSL *s, int mode) 2694 { 2695 s->internal->quiet_shutdown = mode; 2696 } 2697 2698 int 2699 SSL_get_quiet_shutdown(const SSL *s) 2700 { 2701 return (s->internal->quiet_shutdown); 2702 } 2703 2704 void 2705 SSL_set_shutdown(SSL *s, int mode) 2706 { 2707 s->internal->shutdown = mode; 2708 } 2709 2710 int 2711 SSL_get_shutdown(const SSL *s) 2712 { 2713 return (s->internal->shutdown); 2714 } 2715 2716 int 2717 SSL_version(const SSL *s) 2718 { 2719 return (s->version); 2720 } 2721 2722 SSL_CTX * 2723 SSL_get_SSL_CTX(const SSL *ssl) 2724 { 2725 return (ssl->ctx); 2726 } 2727 2728 SSL_CTX * 2729 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2730 { 2731 if (ssl->ctx == ctx) 2732 return (ssl->ctx); 2733 if (ctx == NULL) 2734 ctx = ssl->initial_ctx; 2735 2736 ssl_cert_free(ssl->cert); 2737 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2738 2739 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2740 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2741 ssl->ctx = ctx; 2742 return (ssl->ctx); 2743 } 2744 2745 int 2746 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2747 { 2748 return (X509_STORE_set_default_paths(ctx->cert_store)); 2749 } 2750 2751 int 2752 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2753 const char *CApath) 2754 { 2755 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2756 } 2757 2758 int 2759 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2760 { 2761 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2762 } 2763 2764 void 2765 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2766 { 2767 ssl->internal->info_callback = cb; 2768 } 2769 2770 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2771 { 2772 return (ssl->internal->info_callback); 2773 } 2774 2775 int 2776 SSL_state(const SSL *ssl) 2777 { 2778 return (S3I(ssl)->hs.state); 2779 } 2780 2781 void 2782 SSL_set_state(SSL *ssl, int state) 2783 { 2784 S3I(ssl)->hs.state = state; 2785 } 2786 2787 void 2788 SSL_set_verify_result(SSL *ssl, long arg) 2789 { 2790 ssl->verify_result = arg; 2791 } 2792 2793 long 2794 SSL_get_verify_result(const SSL *ssl) 2795 { 2796 return (ssl->verify_result); 2797 } 2798 2799 int 2800 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2801 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2802 { 2803 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2804 new_func, dup_func, free_func)); 2805 } 2806 2807 int 2808 SSL_set_ex_data(SSL *s, int idx, void *arg) 2809 { 2810 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2811 } 2812 2813 void * 2814 SSL_get_ex_data(const SSL *s, int idx) 2815 { 2816 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2817 } 2818 2819 int 2820 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2821 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2822 { 2823 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2824 new_func, dup_func, free_func)); 2825 } 2826 2827 int 2828 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2829 { 2830 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2831 } 2832 2833 void * 2834 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2835 { 2836 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2837 } 2838 2839 int 2840 ssl_ok(SSL *s) 2841 { 2842 return (1); 2843 } 2844 2845 X509_STORE * 2846 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2847 { 2848 return (ctx->cert_store); 2849 } 2850 2851 void 2852 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2853 { 2854 X509_STORE_free(ctx->cert_store); 2855 ctx->cert_store = store; 2856 } 2857 2858 X509 * 2859 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2860 { 2861 if (ctx->internal->cert == NULL) 2862 return NULL; 2863 2864 return ctx->internal->cert->key->x509; 2865 } 2866 2867 int 2868 SSL_want(const SSL *s) 2869 { 2870 return (s->internal->rwstate); 2871 } 2872 2873 void 2874 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2875 int keylength)) 2876 { 2877 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2878 } 2879 2880 void 2881 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2882 int keylength)) 2883 { 2884 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2885 } 2886 2887 void 2888 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2889 int keylength)) 2890 { 2891 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2892 } 2893 2894 void 2895 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2896 int keylength)) 2897 { 2898 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2899 } 2900 2901 void 2902 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2903 int is_export, int keylength)) 2904 { 2905 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2906 (void (*)(void))ecdh); 2907 } 2908 2909 void 2910 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2911 int keylength)) 2912 { 2913 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2914 } 2915 2916 2917 void 2918 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2919 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2920 { 2921 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2922 (void (*)(void))cb); 2923 } 2924 2925 void 2926 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2927 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2928 { 2929 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2930 } 2931 2932 void 2933 SSL_set_debug(SSL *s, int debug) 2934 { 2935 s->internal->debug = debug; 2936 } 2937 2938 int 2939 SSL_cache_hit(SSL *s) 2940 { 2941 return (s->internal->hit); 2942 } 2943 2944 int 2945 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 2946 { 2947 return ctx->internal->min_version; 2948 } 2949 2950 int 2951 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2952 { 2953 return ssl_version_set_min(ctx->method, version, 2954 ctx->internal->max_version, &ctx->internal->min_version); 2955 } 2956 2957 int 2958 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 2959 { 2960 return ctx->internal->max_version; 2961 } 2962 2963 int 2964 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2965 { 2966 return ssl_version_set_max(ctx->method, version, 2967 ctx->internal->min_version, &ctx->internal->max_version); 2968 } 2969 2970 int 2971 SSL_get_min_proto_version(SSL *ssl) 2972 { 2973 return ssl->internal->min_version; 2974 } 2975 2976 int 2977 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2978 { 2979 return ssl_version_set_min(ssl->method, version, 2980 ssl->internal->max_version, &ssl->internal->min_version); 2981 } 2982 int 2983 SSL_get_max_proto_version(SSL *ssl) 2984 { 2985 return ssl->internal->max_version; 2986 } 2987 2988 int 2989 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2990 { 2991 return ssl_version_set_max(ssl->method, version, 2992 ssl->internal->min_version, &ssl->internal->max_version); 2993 } 2994 2995 static int 2996 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2997 { 2998 SSL_CIPHER const *a = a_; 2999 SSL_CIPHER const *b = b_; 3000 return ssl_cipher_id_cmp(a, b); 3001 } 3002 3003 SSL_CIPHER * 3004 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3005 { 3006 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3007 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3008 } 3009