1 /* $OpenBSD: ssl_lib.c,v 1.207 2019/11/17 19:07:07 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 <arpa/inet.h> 144 #include <sys/socket.h> 145 #include <netinet/in.h> 146 147 #include <stdio.h> 148 149 #include "ssl_locl.h" 150 151 #include <openssl/bn.h> 152 #include <openssl/dh.h> 153 #include <openssl/lhash.h> 154 #include <openssl/objects.h> 155 #include <openssl/ocsp.h> 156 #include <openssl/x509v3.h> 157 158 #ifndef OPENSSL_NO_ENGINE 159 #include <openssl/engine.h> 160 #endif 161 162 #include "bytestring.h" 163 #include "ssl_sigalgs.h" 164 165 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 166 167 int 168 SSL_clear(SSL *s) 169 { 170 if (s->method == NULL) { 171 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 172 return (0); 173 } 174 175 if (ssl_clear_bad_session(s)) { 176 SSL_SESSION_free(s->session); 177 s->session = NULL; 178 } 179 180 s->error = 0; 181 s->internal->hit = 0; 182 s->internal->shutdown = 0; 183 184 if (s->internal->renegotiate) { 185 SSLerror(s, ERR_R_INTERNAL_ERROR); 186 return (0); 187 } 188 189 s->internal->type = 0; 190 191 s->version = s->method->internal->version; 192 s->client_version = s->version; 193 s->internal->rwstate = SSL_NOTHING; 194 s->internal->rstate = SSL_ST_READ_HEADER; 195 196 BUF_MEM_free(s->internal->init_buf); 197 s->internal->init_buf = NULL; 198 199 ssl_clear_cipher_state(s); 200 201 s->internal->first_packet = 0; 202 203 /* 204 * Check to see if we were changed into a different method, if 205 * so, revert back if we are not doing session-id reuse. 206 */ 207 if (!s->internal->in_handshake && (s->session == NULL) && 208 (s->method != s->ctx->method)) { 209 s->method->internal->ssl_free(s); 210 s->method = s->ctx->method; 211 if (!s->method->internal->ssl_new(s)) 212 return (0); 213 } else 214 s->method->internal->ssl_clear(s); 215 216 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 217 218 return (1); 219 } 220 221 /* Used to change an SSL_CTXs default SSL method type */ 222 int 223 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 224 { 225 STACK_OF(SSL_CIPHER) *sk; 226 227 ctx->method = meth; 228 229 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 230 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 231 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 232 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 233 return (0); 234 } 235 return (1); 236 } 237 238 SSL * 239 SSL_new(SSL_CTX *ctx) 240 { 241 SSL *s; 242 243 if (ctx == NULL) { 244 SSLerrorx(SSL_R_NULL_SSL_CTX); 245 return (NULL); 246 } 247 if (ctx->method == NULL) { 248 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 249 return (NULL); 250 } 251 252 if ((s = calloc(1, sizeof(*s))) == NULL) { 253 SSLerrorx(ERR_R_MALLOC_FAILURE); 254 return (NULL); 255 } 256 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 257 free(s); 258 SSLerrorx(ERR_R_MALLOC_FAILURE); 259 return (NULL); 260 } 261 262 s->internal->min_version = ctx->internal->min_version; 263 s->internal->max_version = ctx->internal->max_version; 264 265 s->internal->options = ctx->internal->options; 266 s->internal->mode = ctx->internal->mode; 267 s->internal->max_cert_list = ctx->internal->max_cert_list; 268 269 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 270 goto err; 271 272 s->internal->read_ahead = ctx->internal->read_ahead; 273 s->internal->msg_callback = ctx->internal->msg_callback; 274 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 275 s->verify_mode = ctx->verify_mode; 276 s->sid_ctx_length = ctx->sid_ctx_length; 277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 278 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 279 s->internal->verify_callback = ctx->internal->default_verify_callback; 280 s->internal->generate_session_id = ctx->internal->generate_session_id; 281 282 s->param = X509_VERIFY_PARAM_new(); 283 if (!s->param) 284 goto err; 285 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 286 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 287 s->max_send_fragment = ctx->internal->max_send_fragment; 288 289 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 290 s->ctx = ctx; 291 s->internal->tlsext_debug_cb = 0; 292 s->internal->tlsext_debug_arg = NULL; 293 s->internal->tlsext_ticket_expected = 0; 294 s->tlsext_status_type = -1; 295 s->internal->tlsext_status_expected = 0; 296 s->internal->tlsext_ocsp_ids = NULL; 297 s->internal->tlsext_ocsp_exts = NULL; 298 s->internal->tlsext_ocsp_resp = NULL; 299 s->internal->tlsext_ocsp_resplen = -1; 300 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 301 s->initial_ctx = ctx; 302 303 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 304 s->internal->tlsext_ecpointformatlist = 305 calloc(ctx->internal->tlsext_ecpointformatlist_length, 306 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 307 if (s->internal->tlsext_ecpointformatlist == NULL) 308 goto err; 309 memcpy(s->internal->tlsext_ecpointformatlist, 310 ctx->internal->tlsext_ecpointformatlist, 311 ctx->internal->tlsext_ecpointformatlist_length * 312 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 313 s->internal->tlsext_ecpointformatlist_length = 314 ctx->internal->tlsext_ecpointformatlist_length; 315 } 316 if (ctx->internal->tlsext_supportedgroups != NULL) { 317 s->internal->tlsext_supportedgroups = 318 calloc(ctx->internal->tlsext_supportedgroups_length, 319 sizeof(ctx->internal->tlsext_supportedgroups[0])); 320 if (s->internal->tlsext_supportedgroups == NULL) 321 goto err; 322 memcpy(s->internal->tlsext_supportedgroups, 323 ctx->internal->tlsext_supportedgroups, 324 ctx->internal->tlsext_supportedgroups_length * 325 sizeof(ctx->internal->tlsext_supportedgroups[0])); 326 s->internal->tlsext_supportedgroups_length = 327 ctx->internal->tlsext_supportedgroups_length; 328 } 329 330 if (s->ctx->internal->alpn_client_proto_list != NULL) { 331 s->internal->alpn_client_proto_list = 332 malloc(s->ctx->internal->alpn_client_proto_list_len); 333 if (s->internal->alpn_client_proto_list == NULL) 334 goto err; 335 memcpy(s->internal->alpn_client_proto_list, 336 s->ctx->internal->alpn_client_proto_list, 337 s->ctx->internal->alpn_client_proto_list_len); 338 s->internal->alpn_client_proto_list_len = 339 s->ctx->internal->alpn_client_proto_list_len; 340 } 341 342 s->verify_result = X509_V_OK; 343 344 s->method = ctx->method; 345 346 if (!s->method->internal->ssl_new(s)) 347 goto err; 348 349 s->references = 1; 350 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 351 352 SSL_clear(s); 353 354 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 355 356 return (s); 357 358 err: 359 SSL_free(s); 360 SSLerrorx(ERR_R_MALLOC_FAILURE); 361 return (NULL); 362 } 363 364 int 365 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 366 unsigned int sid_ctx_len) 367 { 368 if (sid_ctx_len > sizeof ctx->sid_ctx) { 369 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 370 return (0); 371 } 372 ctx->sid_ctx_length = sid_ctx_len; 373 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 374 375 return (1); 376 } 377 378 int 379 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 380 unsigned int sid_ctx_len) 381 { 382 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 383 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 384 return (0); 385 } 386 ssl->sid_ctx_length = sid_ctx_len; 387 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 388 389 return (1); 390 } 391 392 int 393 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 394 { 395 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 396 ctx->internal->generate_session_id = cb; 397 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 398 return (1); 399 } 400 401 int 402 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 403 { 404 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 405 ssl->internal->generate_session_id = cb; 406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 407 return (1); 408 } 409 410 int 411 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 412 unsigned int id_len) 413 { 414 /* 415 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 416 * shows how we can "construct" a session to give us the desired 417 * check - ie. to find if there's a session in the hash table 418 * that would conflict with any new session built out of this 419 * id/id_len and the ssl_version in use by this SSL. 420 */ 421 SSL_SESSION r, *p; 422 423 if (id_len > sizeof r.session_id) 424 return (0); 425 426 r.ssl_version = ssl->version; 427 r.session_id_length = id_len; 428 memcpy(r.session_id, id, id_len); 429 430 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 431 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 432 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 433 return (p != NULL); 434 } 435 436 int 437 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 438 { 439 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 440 } 441 442 int 443 SSL_set_purpose(SSL *s, int purpose) 444 { 445 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 446 } 447 448 int 449 SSL_CTX_set_trust(SSL_CTX *s, int trust) 450 { 451 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 452 } 453 454 int 455 SSL_set_trust(SSL *s, int trust) 456 { 457 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 458 } 459 460 int 461 SSL_set1_host(SSL *s, const char *hostname) 462 { 463 struct in_addr ina; 464 struct in6_addr in6a; 465 466 if (hostname != NULL && *hostname != '\0' && 467 (inet_pton(AF_INET, hostname, &ina) == 1 || 468 inet_pton(AF_INET6, hostname, &in6a) == 1)) 469 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 470 else 471 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 472 } 473 474 X509_VERIFY_PARAM * 475 SSL_CTX_get0_param(SSL_CTX *ctx) 476 { 477 return (ctx->param); 478 } 479 480 int 481 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 482 { 483 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 484 } 485 486 X509_VERIFY_PARAM * 487 SSL_get0_param(SSL *ssl) 488 { 489 return (ssl->param); 490 } 491 492 int 493 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 494 { 495 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 496 } 497 498 void 499 SSL_free(SSL *s) 500 { 501 int i; 502 503 if (s == NULL) 504 return; 505 506 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 507 if (i > 0) 508 return; 509 510 X509_VERIFY_PARAM_free(s->param); 511 512 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 513 514 if (s->bbio != NULL) { 515 /* If the buffering BIO is in place, pop it off */ 516 if (s->bbio == s->wbio) { 517 s->wbio = BIO_pop(s->wbio); 518 } 519 BIO_free(s->bbio); 520 s->bbio = NULL; 521 } 522 523 if (s->rbio != s->wbio) 524 BIO_free_all(s->rbio); 525 BIO_free_all(s->wbio); 526 527 BUF_MEM_free(s->internal->init_buf); 528 529 /* add extra stuff */ 530 sk_SSL_CIPHER_free(s->cipher_list); 531 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 532 533 /* Make the next call work :-) */ 534 if (s->session != NULL) { 535 ssl_clear_bad_session(s); 536 SSL_SESSION_free(s->session); 537 } 538 539 ssl_clear_cipher_state(s); 540 541 ssl_cert_free(s->cert); 542 543 free(s->tlsext_hostname); 544 SSL_CTX_free(s->initial_ctx); 545 546 free(s->internal->tlsext_ecpointformatlist); 547 free(s->internal->tlsext_supportedgroups); 548 549 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 550 X509_EXTENSION_free); 551 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 552 free(s->internal->tlsext_ocsp_resp); 553 554 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 555 556 if (s->method != NULL) 557 s->method->internal->ssl_free(s); 558 559 SSL_CTX_free(s->ctx); 560 561 free(s->internal->alpn_client_proto_list); 562 563 #ifndef OPENSSL_NO_SRTP 564 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 565 #endif 566 567 free(s->internal); 568 free(s); 569 } 570 571 int 572 SSL_up_ref(SSL *s) 573 { 574 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 575 return (refs > 1) ? 1 : 0; 576 } 577 578 void 579 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 580 { 581 /* If the output buffering BIO is still in place, remove it */ 582 if (s->bbio != NULL) { 583 if (s->wbio == s->bbio) { 584 s->wbio = s->wbio->next_bio; 585 s->bbio->next_bio = NULL; 586 } 587 } 588 589 if (s->rbio != rbio && s->rbio != s->wbio) 590 BIO_free_all(s->rbio); 591 if (s->wbio != wbio) 592 BIO_free_all(s->wbio); 593 s->rbio = rbio; 594 s->wbio = wbio; 595 } 596 597 BIO * 598 SSL_get_rbio(const SSL *s) 599 { 600 return (s->rbio); 601 } 602 603 BIO * 604 SSL_get_wbio(const SSL *s) 605 { 606 return (s->wbio); 607 } 608 609 int 610 SSL_get_fd(const SSL *s) 611 { 612 return (SSL_get_rfd(s)); 613 } 614 615 int 616 SSL_get_rfd(const SSL *s) 617 { 618 int ret = -1; 619 BIO *b, *r; 620 621 b = SSL_get_rbio(s); 622 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 623 if (r != NULL) 624 BIO_get_fd(r, &ret); 625 return (ret); 626 } 627 628 int 629 SSL_get_wfd(const SSL *s) 630 { 631 int ret = -1; 632 BIO *b, *r; 633 634 b = SSL_get_wbio(s); 635 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 636 if (r != NULL) 637 BIO_get_fd(r, &ret); 638 return (ret); 639 } 640 641 int 642 SSL_set_fd(SSL *s, int fd) 643 { 644 int ret = 0; 645 BIO *bio = NULL; 646 647 bio = BIO_new(BIO_s_socket()); 648 649 if (bio == NULL) { 650 SSLerror(s, ERR_R_BUF_LIB); 651 goto err; 652 } 653 BIO_set_fd(bio, fd, BIO_NOCLOSE); 654 SSL_set_bio(s, bio, bio); 655 ret = 1; 656 err: 657 return (ret); 658 } 659 660 int 661 SSL_set_wfd(SSL *s, int fd) 662 { 663 int ret = 0; 664 BIO *bio = NULL; 665 666 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 667 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, SSL_get_rbio(s), bio); 676 } else 677 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 678 ret = 1; 679 err: 680 return (ret); 681 } 682 683 int 684 SSL_set_rfd(SSL *s, int fd) 685 { 686 int ret = 0; 687 BIO *bio = NULL; 688 689 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 690 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 691 bio = BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) { 694 SSLerror(s, ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, bio, SSL_get_wbio(s)); 699 } else 700 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 701 ret = 1; 702 err: 703 return (ret); 704 } 705 706 707 /* return length of latest Finished message we sent, copy to 'buf' */ 708 size_t 709 SSL_get_finished(const SSL *s, void *buf, size_t count) 710 { 711 size_t ret; 712 713 ret = S3I(s)->tmp.finish_md_len; 714 if (count > ret) 715 count = ret; 716 memcpy(buf, S3I(s)->tmp.finish_md, count); 717 return (ret); 718 } 719 720 /* return length of latest Finished message we expected, copy to 'buf' */ 721 size_t 722 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 723 { 724 size_t ret; 725 726 ret = S3I(s)->tmp.peer_finish_md_len; 727 if (count > ret) 728 count = ret; 729 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 730 return (ret); 731 } 732 733 734 int 735 SSL_get_verify_mode(const SSL *s) 736 { 737 return (s->verify_mode); 738 } 739 740 int 741 SSL_get_verify_depth(const SSL *s) 742 { 743 return (X509_VERIFY_PARAM_get_depth(s->param)); 744 } 745 746 int 747 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 748 { 749 return (s->internal->verify_callback); 750 } 751 752 int 753 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 754 { 755 return (ctx->verify_mode); 756 } 757 758 int 759 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 760 { 761 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 762 } 763 764 int 765 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 766 { 767 return (ctx->internal->default_verify_callback); 768 } 769 770 void 771 SSL_set_verify(SSL *s, int mode, 772 int (*callback)(int ok, X509_STORE_CTX *ctx)) 773 { 774 s->verify_mode = mode; 775 if (callback != NULL) 776 s->internal->verify_callback = callback; 777 } 778 779 void 780 SSL_set_verify_depth(SSL *s, int depth) 781 { 782 X509_VERIFY_PARAM_set_depth(s->param, depth); 783 } 784 785 void 786 SSL_set_read_ahead(SSL *s, int yes) 787 { 788 s->internal->read_ahead = yes; 789 } 790 791 int 792 SSL_get_read_ahead(const SSL *s) 793 { 794 return (s->internal->read_ahead); 795 } 796 797 int 798 SSL_pending(const SSL *s) 799 { 800 /* 801 * SSL_pending cannot work properly if read-ahead is enabled 802 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 803 * and it is impossible to fix since SSL_pending cannot report 804 * errors that may be observed while scanning the new data. 805 * (Note that SSL_pending() is often used as a boolean value, 806 * so we'd better not return -1.) 807 */ 808 return (ssl3_pending(s)); 809 } 810 811 X509 * 812 SSL_get_peer_certificate(const SSL *s) 813 { 814 X509 *r; 815 816 if ((s == NULL) || (s->session == NULL)) 817 r = NULL; 818 else 819 r = s->session->peer; 820 821 if (r == NULL) 822 return (r); 823 824 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 825 826 return (r); 827 } 828 829 STACK_OF(X509) * 830 SSL_get_peer_cert_chain(const SSL *s) 831 { 832 STACK_OF(X509) *r; 833 834 if ((s == NULL) || (s->session == NULL) || 835 (SSI(s)->sess_cert == NULL)) 836 r = NULL; 837 else 838 r = SSI(s)->sess_cert->cert_chain; 839 840 /* 841 * If we are a client, cert_chain includes the peer's own 842 * certificate; 843 * if we are a server, it does not. 844 */ 845 return (r); 846 } 847 848 /* 849 * Now in theory, since the calling process own 't' it should be safe to 850 * modify. We need to be able to read f without being hassled 851 */ 852 int 853 SSL_copy_session_id(SSL *t, const SSL *f) 854 { 855 CERT *tmp; 856 857 /* Do we need to do SSL locking? */ 858 if (!SSL_set_session(t, SSL_get_session(f))) 859 return 0; 860 861 /* What if we are set up for one protocol but want to talk another? */ 862 if (t->method != f->method) { 863 t->method->internal->ssl_free(t); 864 t->method = f->method; 865 if (!t->method->internal->ssl_new(t)) 866 return 0; 867 } 868 869 tmp = t->cert; 870 if (f->cert != NULL) { 871 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 872 t->cert = f->cert; 873 } else 874 t->cert = NULL; 875 ssl_cert_free(tmp); 876 877 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 878 return 0; 879 880 return 1; 881 } 882 883 /* Fix this so it checks all the valid key/cert options */ 884 int 885 SSL_CTX_check_private_key(const SSL_CTX *ctx) 886 { 887 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 888 (ctx->internal->cert->key->x509 == NULL)) { 889 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 890 return (0); 891 } 892 if (ctx->internal->cert->key->privatekey == NULL) { 893 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 894 return (0); 895 } 896 return (X509_check_private_key(ctx->internal->cert->key->x509, 897 ctx->internal->cert->key->privatekey)); 898 } 899 900 /* Fix this function so that it takes an optional type parameter */ 901 int 902 SSL_check_private_key(const SSL *ssl) 903 { 904 if (ssl == NULL) { 905 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 906 return (0); 907 } 908 if (ssl->cert == NULL) { 909 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 910 return (0); 911 } 912 if (ssl->cert->key->x509 == NULL) { 913 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 914 return (0); 915 } 916 if (ssl->cert->key->privatekey == NULL) { 917 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 918 return (0); 919 } 920 return (X509_check_private_key(ssl->cert->key->x509, 921 ssl->cert->key->privatekey)); 922 } 923 924 int 925 SSL_accept(SSL *s) 926 { 927 if (s->internal->handshake_func == NULL) 928 SSL_set_accept_state(s); /* Not properly initialized yet */ 929 930 return (s->method->internal->ssl_accept(s)); 931 } 932 933 int 934 SSL_connect(SSL *s) 935 { 936 if (s->internal->handshake_func == NULL) 937 SSL_set_connect_state(s); /* Not properly initialized yet */ 938 939 return (s->method->internal->ssl_connect(s)); 940 } 941 942 int 943 SSL_is_server(const SSL *s) 944 { 945 return s->server; 946 } 947 948 long 949 SSL_get_default_timeout(const SSL *s) 950 { 951 return (s->method->internal->get_timeout()); 952 } 953 954 int 955 SSL_read(SSL *s, void *buf, int num) 956 { 957 if (s->internal->handshake_func == NULL) { 958 SSLerror(s, SSL_R_UNINITIALIZED); 959 return (-1); 960 } 961 962 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 963 s->internal->rwstate = SSL_NOTHING; 964 return (0); 965 } 966 return ssl3_read(s, buf, num); 967 } 968 969 int 970 SSL_peek(SSL *s, void *buf, int num) 971 { 972 if (s->internal->handshake_func == NULL) { 973 SSLerror(s, SSL_R_UNINITIALIZED); 974 return (-1); 975 } 976 977 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 978 return (0); 979 } 980 return ssl3_peek(s, buf, num); 981 } 982 983 int 984 SSL_write(SSL *s, const void *buf, int num) 985 { 986 if (s->internal->handshake_func == NULL) { 987 SSLerror(s, SSL_R_UNINITIALIZED); 988 return (-1); 989 } 990 991 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 992 s->internal->rwstate = SSL_NOTHING; 993 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 994 return (-1); 995 } 996 return ssl3_write(s, buf, num); 997 } 998 999 int 1000 SSL_shutdown(SSL *s) 1001 { 1002 /* 1003 * Note that this function behaves differently from what one might 1004 * expect. Return values are 0 for no success (yet), 1005 * 1 for success; but calling it once is usually not enough, 1006 * even if blocking I/O is used (see ssl3_shutdown). 1007 */ 1008 1009 if (s->internal->handshake_func == NULL) { 1010 SSLerror(s, SSL_R_UNINITIALIZED); 1011 return (-1); 1012 } 1013 1014 if (s != NULL && !SSL_in_init(s)) 1015 return (s->method->internal->ssl_shutdown(s)); 1016 1017 return (1); 1018 } 1019 1020 int 1021 SSL_renegotiate(SSL *s) 1022 { 1023 if (s->internal->renegotiate == 0) 1024 s->internal->renegotiate = 1; 1025 1026 s->internal->new_session = 1; 1027 1028 return (s->method->internal->ssl_renegotiate(s)); 1029 } 1030 1031 int 1032 SSL_renegotiate_abbreviated(SSL *s) 1033 { 1034 if (s->internal->renegotiate == 0) 1035 s->internal->renegotiate = 1; 1036 1037 s->internal->new_session = 0; 1038 1039 return (s->method->internal->ssl_renegotiate(s)); 1040 } 1041 1042 int 1043 SSL_renegotiate_pending(SSL *s) 1044 { 1045 /* 1046 * Becomes true when negotiation is requested; 1047 * false again once a handshake has finished. 1048 */ 1049 return (s->internal->renegotiate != 0); 1050 } 1051 1052 long 1053 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1054 { 1055 long l; 1056 1057 switch (cmd) { 1058 case SSL_CTRL_GET_READ_AHEAD: 1059 return (s->internal->read_ahead); 1060 case SSL_CTRL_SET_READ_AHEAD: 1061 l = s->internal->read_ahead; 1062 s->internal->read_ahead = larg; 1063 return (l); 1064 1065 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1066 s->internal->msg_callback_arg = parg; 1067 return (1); 1068 1069 case SSL_CTRL_OPTIONS: 1070 return (s->internal->options|=larg); 1071 case SSL_CTRL_CLEAR_OPTIONS: 1072 return (s->internal->options&=~larg); 1073 case SSL_CTRL_MODE: 1074 return (s->internal->mode|=larg); 1075 case SSL_CTRL_CLEAR_MODE: 1076 return (s->internal->mode &=~larg); 1077 case SSL_CTRL_GET_MAX_CERT_LIST: 1078 return (s->internal->max_cert_list); 1079 case SSL_CTRL_SET_MAX_CERT_LIST: 1080 l = s->internal->max_cert_list; 1081 s->internal->max_cert_list = larg; 1082 return (l); 1083 case SSL_CTRL_SET_MTU: 1084 #ifndef OPENSSL_NO_DTLS1 1085 if (larg < (long)dtls1_min_mtu()) 1086 return (0); 1087 #endif 1088 if (SSL_IS_DTLS(s)) { 1089 D1I(s)->mtu = larg; 1090 return (larg); 1091 } 1092 return (0); 1093 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1094 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1095 return (0); 1096 s->max_send_fragment = larg; 1097 return (1); 1098 case SSL_CTRL_GET_RI_SUPPORT: 1099 if (s->s3) 1100 return (S3I(s)->send_connection_binding); 1101 else return (0); 1102 default: 1103 if (SSL_IS_DTLS(s)) 1104 return dtls1_ctrl(s, cmd, larg, parg); 1105 return ssl3_ctrl(s, cmd, larg, parg); 1106 } 1107 } 1108 1109 long 1110 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1111 { 1112 switch (cmd) { 1113 case SSL_CTRL_SET_MSG_CALLBACK: 1114 s->internal->msg_callback = (void (*)(int write_p, int version, 1115 int content_type, const void *buf, size_t len, 1116 SSL *ssl, void *arg))(fp); 1117 return (1); 1118 1119 default: 1120 return (ssl3_callback_ctrl(s, cmd, fp)); 1121 } 1122 } 1123 1124 struct lhash_st_SSL_SESSION * 1125 SSL_CTX_sessions(SSL_CTX *ctx) 1126 { 1127 return (ctx->internal->sessions); 1128 } 1129 1130 long 1131 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1132 { 1133 long l; 1134 1135 switch (cmd) { 1136 case SSL_CTRL_GET_READ_AHEAD: 1137 return (ctx->internal->read_ahead); 1138 case SSL_CTRL_SET_READ_AHEAD: 1139 l = ctx->internal->read_ahead; 1140 ctx->internal->read_ahead = larg; 1141 return (l); 1142 1143 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1144 ctx->internal->msg_callback_arg = parg; 1145 return (1); 1146 1147 case SSL_CTRL_GET_MAX_CERT_LIST: 1148 return (ctx->internal->max_cert_list); 1149 case SSL_CTRL_SET_MAX_CERT_LIST: 1150 l = ctx->internal->max_cert_list; 1151 ctx->internal->max_cert_list = larg; 1152 return (l); 1153 1154 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1155 l = ctx->internal->session_cache_size; 1156 ctx->internal->session_cache_size = larg; 1157 return (l); 1158 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1159 return (ctx->internal->session_cache_size); 1160 case SSL_CTRL_SET_SESS_CACHE_MODE: 1161 l = ctx->internal->session_cache_mode; 1162 ctx->internal->session_cache_mode = larg; 1163 return (l); 1164 case SSL_CTRL_GET_SESS_CACHE_MODE: 1165 return (ctx->internal->session_cache_mode); 1166 1167 case SSL_CTRL_SESS_NUMBER: 1168 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1169 case SSL_CTRL_SESS_CONNECT: 1170 return (ctx->internal->stats.sess_connect); 1171 case SSL_CTRL_SESS_CONNECT_GOOD: 1172 return (ctx->internal->stats.sess_connect_good); 1173 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1174 return (ctx->internal->stats.sess_connect_renegotiate); 1175 case SSL_CTRL_SESS_ACCEPT: 1176 return (ctx->internal->stats.sess_accept); 1177 case SSL_CTRL_SESS_ACCEPT_GOOD: 1178 return (ctx->internal->stats.sess_accept_good); 1179 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1180 return (ctx->internal->stats.sess_accept_renegotiate); 1181 case SSL_CTRL_SESS_HIT: 1182 return (ctx->internal->stats.sess_hit); 1183 case SSL_CTRL_SESS_CB_HIT: 1184 return (ctx->internal->stats.sess_cb_hit); 1185 case SSL_CTRL_SESS_MISSES: 1186 return (ctx->internal->stats.sess_miss); 1187 case SSL_CTRL_SESS_TIMEOUTS: 1188 return (ctx->internal->stats.sess_timeout); 1189 case SSL_CTRL_SESS_CACHE_FULL: 1190 return (ctx->internal->stats.sess_cache_full); 1191 case SSL_CTRL_OPTIONS: 1192 return (ctx->internal->options|=larg); 1193 case SSL_CTRL_CLEAR_OPTIONS: 1194 return (ctx->internal->options&=~larg); 1195 case SSL_CTRL_MODE: 1196 return (ctx->internal->mode|=larg); 1197 case SSL_CTRL_CLEAR_MODE: 1198 return (ctx->internal->mode&=~larg); 1199 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1200 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1201 return (0); 1202 ctx->internal->max_send_fragment = larg; 1203 return (1); 1204 default: 1205 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1206 } 1207 } 1208 1209 long 1210 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1211 { 1212 switch (cmd) { 1213 case SSL_CTRL_SET_MSG_CALLBACK: 1214 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1215 int content_type, const void *buf, size_t len, SSL *ssl, 1216 void *arg))(fp); 1217 return (1); 1218 1219 default: 1220 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1221 } 1222 } 1223 1224 int 1225 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1226 { 1227 long l; 1228 1229 l = a->id - b->id; 1230 if (l == 0L) 1231 return (0); 1232 else 1233 return ((l > 0) ? 1:-1); 1234 } 1235 1236 int 1237 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1238 const SSL_CIPHER * const *bp) 1239 { 1240 long l; 1241 1242 l = (*ap)->id - (*bp)->id; 1243 if (l == 0L) 1244 return (0); 1245 else 1246 return ((l > 0) ? 1:-1); 1247 } 1248 1249 /* 1250 * Return a STACK of the ciphers available for the SSL and in order of 1251 * preference. 1252 */ 1253 STACK_OF(SSL_CIPHER) * 1254 SSL_get_ciphers(const SSL *s) 1255 { 1256 if (s != NULL) { 1257 if (s->cipher_list != NULL) { 1258 return (s->cipher_list); 1259 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1260 return (s->ctx->cipher_list); 1261 } 1262 } 1263 return (NULL); 1264 } 1265 1266 STACK_OF(SSL_CIPHER) * 1267 SSL_get_client_ciphers(const SSL *s) 1268 { 1269 if (s == NULL || s->session == NULL || !s->server) 1270 return NULL; 1271 return s->session->ciphers; 1272 } 1273 1274 STACK_OF(SSL_CIPHER) * 1275 SSL_get1_supported_ciphers(SSL *s) 1276 { 1277 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1278 const SSL_CIPHER *cipher; 1279 uint16_t min_vers, max_vers; 1280 int i; 1281 1282 if (s == NULL) 1283 return NULL; 1284 if (!ssl_supported_version_range(s, &min_vers, &max_vers)) 1285 return NULL; 1286 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1287 return NULL; 1288 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1289 return NULL; 1290 1291 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1292 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1293 goto err; 1294 if (!ssl_cipher_is_permitted(cipher, min_vers, max_vers)) 1295 continue; 1296 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1297 goto err; 1298 } 1299 1300 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1301 return supported_ciphers; 1302 1303 err: 1304 sk_SSL_CIPHER_free(supported_ciphers); 1305 return NULL; 1306 } 1307 1308 /* 1309 * Return a STACK of the ciphers available for the SSL and in order of 1310 * algorithm id. 1311 */ 1312 STACK_OF(SSL_CIPHER) * 1313 ssl_get_ciphers_by_id(SSL *s) 1314 { 1315 if (s != NULL) { 1316 if (s->internal->cipher_list_by_id != NULL) { 1317 return (s->internal->cipher_list_by_id); 1318 } else if ((s->ctx != NULL) && 1319 (s->ctx->internal->cipher_list_by_id != NULL)) { 1320 return (s->ctx->internal->cipher_list_by_id); 1321 } 1322 } 1323 return (NULL); 1324 } 1325 1326 /* See if we have any ECC cipher suites. */ 1327 int 1328 ssl_has_ecc_ciphers(SSL *s) 1329 { 1330 STACK_OF(SSL_CIPHER) *ciphers; 1331 unsigned long alg_k, alg_a; 1332 SSL_CIPHER *cipher; 1333 int i; 1334 1335 if (s->version == DTLS1_VERSION) 1336 return 0; 1337 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1338 return 0; 1339 1340 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1341 cipher = sk_SSL_CIPHER_value(ciphers, i); 1342 1343 alg_k = cipher->algorithm_mkey; 1344 alg_a = cipher->algorithm_auth; 1345 1346 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1347 return 1; 1348 } 1349 1350 return 0; 1351 } 1352 1353 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1354 const char * 1355 SSL_get_cipher_list(const SSL *s, int n) 1356 { 1357 SSL_CIPHER *c; 1358 STACK_OF(SSL_CIPHER) *sk; 1359 1360 if (s == NULL) 1361 return (NULL); 1362 sk = SSL_get_ciphers(s); 1363 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1364 return (NULL); 1365 c = sk_SSL_CIPHER_value(sk, n); 1366 if (c == NULL) 1367 return (NULL); 1368 return (c->name); 1369 } 1370 1371 STACK_OF(SSL_CIPHER) * 1372 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1373 { 1374 return ctx->cipher_list; 1375 } 1376 1377 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1378 int 1379 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1380 { 1381 STACK_OF(SSL_CIPHER) *sk; 1382 1383 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1384 &ctx->internal->cipher_list_by_id, str); 1385 /* 1386 * ssl_create_cipher_list may return an empty stack if it 1387 * was unable to find a cipher matching the given rule string 1388 * (for example if the rule string specifies a cipher which 1389 * has been disabled). This is not an error as far as 1390 * ssl_create_cipher_list is concerned, and hence 1391 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1392 * updated. 1393 */ 1394 if (sk == NULL) 1395 return (0); 1396 else if (sk_SSL_CIPHER_num(sk) == 0) { 1397 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1398 return (0); 1399 } 1400 return (1); 1401 } 1402 1403 /* Specify the ciphers to be used by the SSL. */ 1404 int 1405 SSL_set_cipher_list(SSL *s, const char *str) 1406 { 1407 STACK_OF(SSL_CIPHER) *sk; 1408 1409 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1410 &s->internal->cipher_list_by_id, str); 1411 /* see comment in SSL_CTX_set_cipher_list */ 1412 if (sk == NULL) 1413 return (0); 1414 else if (sk_SSL_CIPHER_num(sk) == 0) { 1415 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1416 return (0); 1417 } 1418 return (1); 1419 } 1420 1421 /* works well for SSLv2, not so good for SSLv3 */ 1422 char * 1423 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1424 { 1425 char *end; 1426 STACK_OF(SSL_CIPHER) *sk; 1427 SSL_CIPHER *c; 1428 size_t curlen = 0; 1429 int i; 1430 1431 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1432 return (NULL); 1433 1434 sk = s->session->ciphers; 1435 if (sk_SSL_CIPHER_num(sk) == 0) 1436 return (NULL); 1437 1438 buf[0] = '\0'; 1439 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1440 c = sk_SSL_CIPHER_value(sk, i); 1441 end = buf + curlen; 1442 if (strlcat(buf, c->name, len) >= len || 1443 (curlen = strlcat(buf, ":", len)) >= len) { 1444 /* remove truncated cipher from list */ 1445 *end = '\0'; 1446 break; 1447 } 1448 } 1449 /* remove trailing colon */ 1450 if ((end = strrchr(buf, ':')) != NULL) 1451 *end = '\0'; 1452 return (buf); 1453 } 1454 1455 /* 1456 * Return a servername extension value if provided in Client Hello, or NULL. 1457 * So far, only host_name types are defined (RFC 3546). 1458 */ 1459 const char * 1460 SSL_get_servername(const SSL *s, const int type) 1461 { 1462 if (type != TLSEXT_NAMETYPE_host_name) 1463 return (NULL); 1464 1465 return (s->session && !s->tlsext_hostname ? 1466 s->session->tlsext_hostname : 1467 s->tlsext_hostname); 1468 } 1469 1470 int 1471 SSL_get_servername_type(const SSL *s) 1472 { 1473 if (s->session && 1474 (!s->tlsext_hostname ? 1475 s->session->tlsext_hostname : s->tlsext_hostname)) 1476 return (TLSEXT_NAMETYPE_host_name); 1477 return (-1); 1478 } 1479 1480 /* 1481 * SSL_select_next_proto implements standard protocol selection. It is 1482 * expected that this function is called from the callback set by 1483 * SSL_CTX_set_alpn_select_cb. 1484 * 1485 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1486 * strings. The length byte itself is not included in the length. A byte 1487 * string of length 0 is invalid. No byte string may be truncated. 1488 * 1489 * It returns either: 1490 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1491 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1492 */ 1493 int 1494 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1495 const unsigned char *server, unsigned int server_len, 1496 const unsigned char *client, unsigned int client_len) 1497 { 1498 unsigned int i, j; 1499 const unsigned char *result; 1500 int status = OPENSSL_NPN_UNSUPPORTED; 1501 1502 /* 1503 * For each protocol in server preference order, 1504 * see if we support it. 1505 */ 1506 for (i = 0; i < server_len; ) { 1507 for (j = 0; j < client_len; ) { 1508 if (server[i] == client[j] && 1509 memcmp(&server[i + 1], 1510 &client[j + 1], server[i]) == 0) { 1511 /* We found a match */ 1512 result = &server[i]; 1513 status = OPENSSL_NPN_NEGOTIATED; 1514 goto found; 1515 } 1516 j += client[j]; 1517 j++; 1518 } 1519 i += server[i]; 1520 i++; 1521 } 1522 1523 /* There's no overlap between our protocols and the server's list. */ 1524 result = client; 1525 status = OPENSSL_NPN_NO_OVERLAP; 1526 1527 found: 1528 *out = (unsigned char *) result + 1; 1529 *outlen = result[0]; 1530 return (status); 1531 } 1532 1533 /* SSL_get0_next_proto_negotiated is deprecated. */ 1534 void 1535 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1536 unsigned *len) 1537 { 1538 *data = NULL; 1539 *len = 0; 1540 } 1541 1542 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1543 void 1544 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1545 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1546 { 1547 } 1548 1549 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1550 void 1551 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1552 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1553 unsigned int inlen, void *arg), void *arg) 1554 { 1555 } 1556 1557 /* 1558 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1559 * protocols, which must be in wire-format (i.e. a series of non-empty, 1560 * 8-bit length-prefixed strings). Returns 0 on success. 1561 */ 1562 int 1563 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1564 unsigned int protos_len) 1565 { 1566 int failed = 1; 1567 1568 if (protos == NULL || protos_len == 0) 1569 goto err; 1570 1571 free(ctx->internal->alpn_client_proto_list); 1572 ctx->internal->alpn_client_proto_list = NULL; 1573 ctx->internal->alpn_client_proto_list_len = 0; 1574 1575 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1576 == NULL) 1577 goto err; 1578 ctx->internal->alpn_client_proto_list_len = protos_len; 1579 1580 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1581 1582 failed = 0; 1583 1584 err: 1585 /* NOTE: Return values are the reverse of what you expect. */ 1586 return (failed); 1587 } 1588 1589 /* 1590 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1591 * protocols, which must be in wire-format (i.e. a series of non-empty, 1592 * 8-bit length-prefixed strings). Returns 0 on success. 1593 */ 1594 int 1595 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1596 unsigned int protos_len) 1597 { 1598 int failed = 1; 1599 1600 if (protos == NULL || protos_len == 0) 1601 goto err; 1602 1603 free(ssl->internal->alpn_client_proto_list); 1604 ssl->internal->alpn_client_proto_list = NULL; 1605 ssl->internal->alpn_client_proto_list_len = 0; 1606 1607 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1608 == NULL) 1609 goto err; 1610 ssl->internal->alpn_client_proto_list_len = protos_len; 1611 1612 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1613 1614 failed = 0; 1615 1616 err: 1617 /* NOTE: Return values are the reverse of what you expect. */ 1618 return (failed); 1619 } 1620 1621 /* 1622 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1623 * ClientHello processing in order to select an ALPN protocol from the 1624 * client's list of offered protocols. 1625 */ 1626 void 1627 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1628 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1629 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1630 { 1631 ctx->internal->alpn_select_cb = cb; 1632 ctx->internal->alpn_select_cb_arg = arg; 1633 } 1634 1635 /* 1636 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1637 * it sets data to point to len bytes of protocol name (not including the 1638 * leading length-prefix byte). If the server didn't respond with* a negotiated 1639 * protocol then len will be zero. 1640 */ 1641 void 1642 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1643 unsigned *len) 1644 { 1645 *data = NULL; 1646 *len = 0; 1647 1648 *data = ssl->s3->internal->alpn_selected; 1649 *len = ssl->s3->internal->alpn_selected_len; 1650 } 1651 1652 int 1653 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1654 const char *label, size_t llen, const unsigned char *p, size_t plen, 1655 int use_context) 1656 { 1657 return (tls1_export_keying_material(s, out, olen, 1658 label, llen, p, plen, use_context)); 1659 } 1660 1661 static unsigned long 1662 ssl_session_hash(const SSL_SESSION *a) 1663 { 1664 unsigned long l; 1665 1666 l = (unsigned long) 1667 ((unsigned int) a->session_id[0] )| 1668 ((unsigned int) a->session_id[1]<< 8L)| 1669 ((unsigned long)a->session_id[2]<<16L)| 1670 ((unsigned long)a->session_id[3]<<24L); 1671 return (l); 1672 } 1673 1674 /* 1675 * NB: If this function (or indeed the hash function which uses a sort of 1676 * coarser function than this one) is changed, ensure 1677 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1678 * able to construct an SSL_SESSION that will collide with any existing session 1679 * with a matching session ID. 1680 */ 1681 static int 1682 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1683 { 1684 if (a->ssl_version != b->ssl_version) 1685 return (1); 1686 if (a->session_id_length != b->session_id_length) 1687 return (1); 1688 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1689 return (1); 1690 return (0); 1691 } 1692 1693 /* 1694 * These wrapper functions should remain rather than redeclaring 1695 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1696 * variable. The reason is that the functions aren't static, they're exposed via 1697 * ssl.h. 1698 */ 1699 static unsigned long 1700 ssl_session_LHASH_HASH(const void *arg) 1701 { 1702 const SSL_SESSION *a = arg; 1703 1704 return ssl_session_hash(a); 1705 } 1706 1707 static int 1708 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1709 { 1710 const SSL_SESSION *a = arg1; 1711 const SSL_SESSION *b = arg2; 1712 1713 return ssl_session_cmp(a, b); 1714 } 1715 1716 SSL_CTX * 1717 SSL_CTX_new(const SSL_METHOD *meth) 1718 { 1719 SSL_CTX *ret; 1720 1721 if (!OPENSSL_init_ssl(0, NULL)) { 1722 SSLerrorx(SSL_R_LIBRARY_BUG); 1723 return (NULL); 1724 } 1725 1726 if (meth == NULL) { 1727 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1728 return (NULL); 1729 } 1730 1731 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1732 SSLerrorx(ERR_R_MALLOC_FAILURE); 1733 return (NULL); 1734 } 1735 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1736 free(ret); 1737 SSLerrorx(ERR_R_MALLOC_FAILURE); 1738 return (NULL); 1739 } 1740 1741 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1742 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1743 goto err; 1744 } 1745 1746 ret->method = meth; 1747 ret->internal->min_version = meth->internal->min_version; 1748 ret->internal->max_version = meth->internal->max_version; 1749 1750 ret->cert_store = NULL; 1751 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1752 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1753 ret->internal->session_cache_head = NULL; 1754 ret->internal->session_cache_tail = NULL; 1755 1756 /* We take the system default */ 1757 ret->session_timeout = meth->internal->get_timeout(); 1758 1759 ret->internal->new_session_cb = 0; 1760 ret->internal->remove_session_cb = 0; 1761 ret->internal->get_session_cb = 0; 1762 ret->internal->generate_session_id = 0; 1763 1764 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1765 1766 ret->references = 1; 1767 ret->internal->quiet_shutdown = 0; 1768 1769 ret->internal->info_callback = NULL; 1770 1771 ret->internal->app_verify_callback = 0; 1772 ret->internal->app_verify_arg = NULL; 1773 1774 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1775 ret->internal->read_ahead = 0; 1776 ret->internal->msg_callback = 0; 1777 ret->internal->msg_callback_arg = NULL; 1778 ret->verify_mode = SSL_VERIFY_NONE; 1779 ret->sid_ctx_length = 0; 1780 ret->internal->default_verify_callback = NULL; 1781 1782 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1783 goto err; 1784 1785 ret->default_passwd_callback = 0; 1786 ret->default_passwd_callback_userdata = NULL; 1787 ret->internal->client_cert_cb = 0; 1788 ret->internal->app_gen_cookie_cb = 0; 1789 ret->internal->app_verify_cookie_cb = 0; 1790 1791 ret->internal->sessions = lh_SSL_SESSION_new(); 1792 if (ret->internal->sessions == NULL) 1793 goto err; 1794 ret->cert_store = X509_STORE_new(); 1795 if (ret->cert_store == NULL) 1796 goto err; 1797 1798 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1799 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1800 if (ret->cipher_list == NULL || 1801 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1802 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1803 goto err2; 1804 } 1805 1806 ret->param = X509_VERIFY_PARAM_new(); 1807 if (!ret->param) 1808 goto err; 1809 1810 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1811 goto err; 1812 1813 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1814 1815 ret->extra_certs = NULL; 1816 1817 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1818 1819 ret->internal->tlsext_servername_callback = 0; 1820 ret->internal->tlsext_servername_arg = NULL; 1821 1822 /* Setup RFC4507 ticket keys */ 1823 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1824 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1825 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1826 1827 ret->internal->tlsext_status_cb = 0; 1828 ret->internal->tlsext_status_arg = NULL; 1829 1830 #ifndef OPENSSL_NO_ENGINE 1831 ret->internal->client_cert_engine = NULL; 1832 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1833 #define eng_strx(x) #x 1834 #define eng_str(x) eng_strx(x) 1835 /* Use specific client engine automatically... ignore errors */ 1836 { 1837 ENGINE *eng; 1838 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1839 if (!eng) { 1840 ERR_clear_error(); 1841 ENGINE_load_builtin_engines(); 1842 eng = ENGINE_by_id(eng_str( 1843 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1844 } 1845 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1846 ERR_clear_error(); 1847 } 1848 #endif 1849 #endif 1850 /* 1851 * Default is to connect to non-RI servers. When RI is more widely 1852 * deployed might change this. 1853 */ 1854 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1855 1856 return (ret); 1857 err: 1858 SSLerrorx(ERR_R_MALLOC_FAILURE); 1859 err2: 1860 SSL_CTX_free(ret); 1861 return (NULL); 1862 } 1863 1864 void 1865 SSL_CTX_free(SSL_CTX *ctx) 1866 { 1867 int i; 1868 1869 if (ctx == NULL) 1870 return; 1871 1872 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1873 if (i > 0) 1874 return; 1875 1876 X509_VERIFY_PARAM_free(ctx->param); 1877 1878 /* 1879 * Free internal session cache. However: the remove_cb() may reference 1880 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1881 * after the sessions were flushed. 1882 * As the ex_data handling routines might also touch the session cache, 1883 * the most secure solution seems to be: empty (flush) the cache, then 1884 * free ex_data, then finally free the cache. 1885 * (See ticket [openssl.org #212].) 1886 */ 1887 if (ctx->internal->sessions != NULL) 1888 SSL_CTX_flush_sessions(ctx, 0); 1889 1890 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1891 1892 lh_SSL_SESSION_free(ctx->internal->sessions); 1893 1894 X509_STORE_free(ctx->cert_store); 1895 sk_SSL_CIPHER_free(ctx->cipher_list); 1896 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1897 ssl_cert_free(ctx->internal->cert); 1898 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1899 sk_X509_pop_free(ctx->extra_certs, X509_free); 1900 1901 #ifndef OPENSSL_NO_SRTP 1902 if (ctx->internal->srtp_profiles) 1903 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1904 #endif 1905 1906 #ifndef OPENSSL_NO_ENGINE 1907 ENGINE_finish(ctx->internal->client_cert_engine); 1908 #endif 1909 1910 free(ctx->internal->tlsext_ecpointformatlist); 1911 free(ctx->internal->tlsext_supportedgroups); 1912 1913 free(ctx->internal->alpn_client_proto_list); 1914 1915 free(ctx->internal); 1916 free(ctx); 1917 } 1918 1919 int 1920 SSL_CTX_up_ref(SSL_CTX *ctx) 1921 { 1922 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1923 return ((refs > 1) ? 1 : 0); 1924 } 1925 1926 pem_password_cb * 1927 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1928 { 1929 return (ctx->default_passwd_callback); 1930 } 1931 1932 void 1933 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1934 { 1935 ctx->default_passwd_callback = cb; 1936 } 1937 1938 void * 1939 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 1940 { 1941 return ctx->default_passwd_callback_userdata; 1942 } 1943 1944 void 1945 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1946 { 1947 ctx->default_passwd_callback_userdata = u; 1948 } 1949 1950 void 1951 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1952 void *), void *arg) 1953 { 1954 ctx->internal->app_verify_callback = cb; 1955 ctx->internal->app_verify_arg = arg; 1956 } 1957 1958 void 1959 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1960 { 1961 ctx->verify_mode = mode; 1962 ctx->internal->default_verify_callback = cb; 1963 } 1964 1965 void 1966 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1967 { 1968 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1969 } 1970 1971 void 1972 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1973 { 1974 int rsa_enc, rsa_sign, dh_tmp; 1975 int have_ecc_cert; 1976 unsigned long mask_k, mask_a; 1977 X509 *x = NULL; 1978 CERT_PKEY *cpk; 1979 1980 if (c == NULL) 1981 return; 1982 1983 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 1984 c->dh_tmp_auto != 0); 1985 1986 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1987 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1988 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1989 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1990 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1991 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1992 1993 mask_k = 0; 1994 mask_a = 0; 1995 1996 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1997 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1998 mask_k |= SSL_kGOST; 1999 mask_a |= SSL_aGOST01; 2000 } 2001 2002 if (rsa_enc) 2003 mask_k |= SSL_kRSA; 2004 2005 if (dh_tmp) 2006 mask_k |= SSL_kDHE; 2007 2008 if (rsa_enc || rsa_sign) 2009 mask_a |= SSL_aRSA; 2010 2011 mask_a |= SSL_aNULL; 2012 2013 /* 2014 * An ECC certificate may be usable for ECDH and/or 2015 * ECDSA cipher suites depending on the key usage extension. 2016 */ 2017 if (have_ecc_cert) { 2018 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2019 2020 /* This call populates extension flags (ex_flags). */ 2021 X509_check_purpose(x, -1, 0); 2022 2023 /* Key usage, if present, must allow signing. */ 2024 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2025 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2026 mask_a |= SSL_aECDSA; 2027 } 2028 2029 mask_k |= SSL_kECDHE; 2030 2031 c->mask_k = mask_k; 2032 c->mask_a = mask_a; 2033 c->valid = 1; 2034 } 2035 2036 /* See if this handshake is using an ECC cipher suite. */ 2037 int 2038 ssl_using_ecc_cipher(SSL *s) 2039 { 2040 unsigned long alg_a, alg_k; 2041 2042 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2043 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2044 2045 return SSI(s)->tlsext_ecpointformatlist != NULL && 2046 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2047 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2048 } 2049 2050 int 2051 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2052 { 2053 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2054 unsigned long alg_a; 2055 2056 alg_a = cs->algorithm_auth; 2057 2058 if (alg_a & SSL_aECDSA) { 2059 /* This call populates extension flags (ex_flags). */ 2060 X509_check_purpose(x, -1, 0); 2061 2062 /* Key usage, if present, must allow signing. */ 2063 if ((x->ex_flags & EXFLAG_KUSAGE) && 2064 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2065 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2066 return (0); 2067 } 2068 } 2069 2070 return (1); 2071 } 2072 2073 CERT_PKEY * 2074 ssl_get_server_send_pkey(const SSL *s) 2075 { 2076 unsigned long alg_a; 2077 CERT *c; 2078 int i; 2079 2080 c = s->cert; 2081 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2082 2083 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2084 2085 if (alg_a & SSL_aECDSA) { 2086 i = SSL_PKEY_ECC; 2087 } else if (alg_a & SSL_aRSA) { 2088 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2089 i = SSL_PKEY_RSA_SIGN; 2090 else 2091 i = SSL_PKEY_RSA_ENC; 2092 } else if (alg_a & SSL_aGOST01) { 2093 i = SSL_PKEY_GOST01; 2094 } else { /* if (alg_a & SSL_aNULL) */ 2095 SSLerror(s, ERR_R_INTERNAL_ERROR); 2096 return (NULL); 2097 } 2098 2099 return (c->pkeys + i); 2100 } 2101 2102 EVP_PKEY * 2103 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2104 const struct ssl_sigalg **sap) 2105 { 2106 const struct ssl_sigalg *sigalg = NULL; 2107 EVP_PKEY *pkey = NULL; 2108 unsigned long alg_a; 2109 CERT *c; 2110 int idx = -1; 2111 2112 alg_a = cipher->algorithm_auth; 2113 c = s->cert; 2114 2115 if (alg_a & SSL_aRSA) { 2116 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2117 idx = SSL_PKEY_RSA_SIGN; 2118 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2119 idx = SSL_PKEY_RSA_ENC; 2120 } else if ((alg_a & SSL_aECDSA) && 2121 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2122 idx = SSL_PKEY_ECC; 2123 if (idx == -1) { 2124 SSLerror(s, ERR_R_INTERNAL_ERROR); 2125 return (NULL); 2126 } 2127 2128 pkey = c->pkeys[idx].privatekey; 2129 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2130 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2131 return (NULL); 2132 } 2133 *pmd = sigalg->md(); 2134 *sap = sigalg; 2135 2136 return (pkey); 2137 } 2138 2139 DH * 2140 ssl_get_auto_dh(SSL *s) 2141 { 2142 CERT_PKEY *cpk; 2143 int keylen; 2144 DH *dhp; 2145 2146 if (s->cert->dh_tmp_auto == 2) { 2147 keylen = 1024; 2148 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2149 keylen = 1024; 2150 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2151 keylen = 3072; 2152 } else { 2153 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2154 return (NULL); 2155 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2156 return (NULL); 2157 keylen = EVP_PKEY_bits(cpk->privatekey); 2158 } 2159 2160 if ((dhp = DH_new()) == NULL) 2161 return (NULL); 2162 2163 dhp->g = BN_new(); 2164 if (dhp->g != NULL) 2165 BN_set_word(dhp->g, 2); 2166 2167 if (keylen >= 8192) 2168 dhp->p = get_rfc3526_prime_8192(NULL); 2169 else if (keylen >= 4096) 2170 dhp->p = get_rfc3526_prime_4096(NULL); 2171 else if (keylen >= 3072) 2172 dhp->p = get_rfc3526_prime_3072(NULL); 2173 else if (keylen >= 2048) 2174 dhp->p = get_rfc3526_prime_2048(NULL); 2175 else if (keylen >= 1536) 2176 dhp->p = get_rfc3526_prime_1536(NULL); 2177 else 2178 dhp->p = get_rfc2409_prime_1024(NULL); 2179 2180 if (dhp->p == NULL || dhp->g == NULL) { 2181 DH_free(dhp); 2182 return (NULL); 2183 } 2184 return (dhp); 2185 } 2186 2187 void 2188 ssl_update_cache(SSL *s, int mode) 2189 { 2190 int i; 2191 2192 /* 2193 * If the session_id_length is 0, we are not supposed to cache it, 2194 * and it would be rather hard to do anyway :-) 2195 */ 2196 if (s->session->session_id_length == 0) 2197 return; 2198 2199 i = s->session_ctx->internal->session_cache_mode; 2200 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2201 || SSL_CTX_add_session(s->session_ctx, s->session)) 2202 && (s->session_ctx->internal->new_session_cb != NULL)) { 2203 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2204 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2205 SSL_SESSION_free(s->session); 2206 } 2207 2208 /* auto flush every 255 connections */ 2209 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2210 ((i & mode) == mode)) { 2211 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2212 s->session_ctx->internal->stats.sess_connect_good : 2213 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2214 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2215 } 2216 } 2217 } 2218 2219 const SSL_METHOD * 2220 SSL_get_ssl_method(SSL *s) 2221 { 2222 return (s->method); 2223 } 2224 2225 int 2226 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2227 { 2228 int conn = -1; 2229 int ret = 1; 2230 2231 if (s->method != meth) { 2232 if (s->internal->handshake_func != NULL) 2233 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2234 2235 if (s->method->internal->version == meth->internal->version) 2236 s->method = meth; 2237 else { 2238 s->method->internal->ssl_free(s); 2239 s->method = meth; 2240 ret = s->method->internal->ssl_new(s); 2241 } 2242 2243 if (conn == 1) 2244 s->internal->handshake_func = meth->internal->ssl_connect; 2245 else if (conn == 0) 2246 s->internal->handshake_func = meth->internal->ssl_accept; 2247 } 2248 return (ret); 2249 } 2250 2251 int 2252 SSL_get_error(const SSL *s, int i) 2253 { 2254 int reason; 2255 unsigned long l; 2256 BIO *bio; 2257 2258 if (i > 0) 2259 return (SSL_ERROR_NONE); 2260 2261 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2262 * etc, where we do encode the error */ 2263 if ((l = ERR_peek_error()) != 0) { 2264 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2265 return (SSL_ERROR_SYSCALL); 2266 else 2267 return (SSL_ERROR_SSL); 2268 } 2269 2270 if ((i < 0) && SSL_want_read(s)) { 2271 bio = SSL_get_rbio(s); 2272 if (BIO_should_read(bio)) { 2273 return (SSL_ERROR_WANT_READ); 2274 } else if (BIO_should_write(bio)) { 2275 /* 2276 * This one doesn't make too much sense... We never 2277 * try to write to the rbio, and an application 2278 * program where rbio and wbio are separate couldn't 2279 * even know what it should wait for. However if we 2280 * ever set s->internal->rwstate incorrectly (so that we have 2281 * SSL_want_read(s) instead of SSL_want_write(s)) 2282 * and rbio and wbio *are* the same, this test works 2283 * around that bug; so it might be safer to keep it. 2284 */ 2285 return (SSL_ERROR_WANT_WRITE); 2286 } else if (BIO_should_io_special(bio)) { 2287 reason = BIO_get_retry_reason(bio); 2288 if (reason == BIO_RR_CONNECT) 2289 return (SSL_ERROR_WANT_CONNECT); 2290 else if (reason == BIO_RR_ACCEPT) 2291 return (SSL_ERROR_WANT_ACCEPT); 2292 else 2293 return (SSL_ERROR_SYSCALL); /* unknown */ 2294 } 2295 } 2296 2297 if ((i < 0) && SSL_want_write(s)) { 2298 bio = SSL_get_wbio(s); 2299 if (BIO_should_write(bio)) { 2300 return (SSL_ERROR_WANT_WRITE); 2301 } else if (BIO_should_read(bio)) { 2302 /* 2303 * See above (SSL_want_read(s) with 2304 * BIO_should_write(bio)) 2305 */ 2306 return (SSL_ERROR_WANT_READ); 2307 } else if (BIO_should_io_special(bio)) { 2308 reason = BIO_get_retry_reason(bio); 2309 if (reason == BIO_RR_CONNECT) 2310 return (SSL_ERROR_WANT_CONNECT); 2311 else if (reason == BIO_RR_ACCEPT) 2312 return (SSL_ERROR_WANT_ACCEPT); 2313 else 2314 return (SSL_ERROR_SYSCALL); 2315 } 2316 } 2317 if ((i < 0) && SSL_want_x509_lookup(s)) { 2318 return (SSL_ERROR_WANT_X509_LOOKUP); 2319 } 2320 2321 if (i == 0) { 2322 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2323 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2324 return (SSL_ERROR_ZERO_RETURN); 2325 } 2326 return (SSL_ERROR_SYSCALL); 2327 } 2328 2329 int 2330 SSL_do_handshake(SSL *s) 2331 { 2332 int ret = 1; 2333 2334 if (s->internal->handshake_func == NULL) { 2335 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2336 return (-1); 2337 } 2338 2339 s->method->internal->ssl_renegotiate_check(s); 2340 2341 if (SSL_in_init(s) || SSL_in_before(s)) { 2342 ret = s->internal->handshake_func(s); 2343 } 2344 return (ret); 2345 } 2346 2347 /* 2348 * For the next 2 functions, SSL_clear() sets shutdown and so 2349 * one of these calls will reset it 2350 */ 2351 void 2352 SSL_set_accept_state(SSL *s) 2353 { 2354 s->server = 1; 2355 s->internal->shutdown = 0; 2356 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2357 s->internal->handshake_func = s->method->internal->ssl_accept; 2358 ssl_clear_cipher_state(s); 2359 } 2360 2361 void 2362 SSL_set_connect_state(SSL *s) 2363 { 2364 s->server = 0; 2365 s->internal->shutdown = 0; 2366 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2367 s->internal->handshake_func = s->method->internal->ssl_connect; 2368 ssl_clear_cipher_state(s); 2369 } 2370 2371 int 2372 ssl_undefined_function(SSL *s) 2373 { 2374 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2375 return (0); 2376 } 2377 2378 int 2379 ssl_undefined_void_function(void) 2380 { 2381 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2382 return (0); 2383 } 2384 2385 int 2386 ssl_undefined_const_function(const SSL *s) 2387 { 2388 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2389 return (0); 2390 } 2391 2392 const char * 2393 ssl_version_string(int ver) 2394 { 2395 switch (ver) { 2396 case DTLS1_VERSION: 2397 return (SSL_TXT_DTLS1); 2398 case TLS1_VERSION: 2399 return (SSL_TXT_TLSV1); 2400 case TLS1_1_VERSION: 2401 return (SSL_TXT_TLSV1_1); 2402 case TLS1_2_VERSION: 2403 return (SSL_TXT_TLSV1_2); 2404 case TLS1_3_VERSION: 2405 return (SSL_TXT_TLSV1_3); 2406 default: 2407 return ("unknown"); 2408 } 2409 } 2410 2411 const char * 2412 SSL_get_version(const SSL *s) 2413 { 2414 return ssl_version_string(s->version); 2415 } 2416 2417 SSL * 2418 SSL_dup(SSL *s) 2419 { 2420 STACK_OF(X509_NAME) *sk; 2421 X509_NAME *xn; 2422 SSL *ret; 2423 int i; 2424 2425 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2426 goto err; 2427 2428 ret->version = s->version; 2429 ret->internal->type = s->internal->type; 2430 ret->method = s->method; 2431 2432 if (s->session != NULL) { 2433 if (!SSL_copy_session_id(ret, s)) 2434 goto err; 2435 } else { 2436 /* 2437 * No session has been established yet, so we have to expect 2438 * that s->cert or ret->cert will be changed later -- 2439 * they should not both point to the same object, 2440 * and thus we can't use SSL_copy_session_id. 2441 */ 2442 2443 ret->method->internal->ssl_free(ret); 2444 ret->method = s->method; 2445 ret->method->internal->ssl_new(ret); 2446 2447 ssl_cert_free(ret->cert); 2448 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2449 goto err; 2450 2451 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2452 s->sid_ctx_length)) 2453 goto err; 2454 } 2455 2456 ret->internal->options = s->internal->options; 2457 ret->internal->mode = s->internal->mode; 2458 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2459 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2460 ret->internal->msg_callback = s->internal->msg_callback; 2461 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2462 SSL_set_verify(ret, SSL_get_verify_mode(s), 2463 SSL_get_verify_callback(s)); 2464 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2465 ret->internal->generate_session_id = s->internal->generate_session_id; 2466 2467 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2468 2469 ret->internal->debug = s->internal->debug; 2470 2471 /* copy app data, a little dangerous perhaps */ 2472 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2473 &ret->internal->ex_data, &s->internal->ex_data)) 2474 goto err; 2475 2476 /* setup rbio, and wbio */ 2477 if (s->rbio != NULL) { 2478 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2479 goto err; 2480 } 2481 if (s->wbio != NULL) { 2482 if (s->wbio != s->rbio) { 2483 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2484 goto err; 2485 } else 2486 ret->wbio = ret->rbio; 2487 } 2488 ret->internal->rwstate = s->internal->rwstate; 2489 ret->internal->in_handshake = s->internal->in_handshake; 2490 ret->internal->handshake_func = s->internal->handshake_func; 2491 ret->server = s->server; 2492 ret->internal->renegotiate = s->internal->renegotiate; 2493 ret->internal->new_session = s->internal->new_session; 2494 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2495 ret->internal->shutdown = s->internal->shutdown; 2496 /* SSL_dup does not really work at any state, though */ 2497 S3I(ret)->hs.state = S3I(s)->hs.state; 2498 ret->internal->rstate = s->internal->rstate; 2499 2500 /* 2501 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2502 * ret->init_off 2503 */ 2504 ret->internal->init_num = 0; 2505 2506 ret->internal->hit = s->internal->hit; 2507 2508 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2509 2510 /* dup the cipher_list and cipher_list_by_id stacks */ 2511 if (s->cipher_list != NULL) { 2512 if ((ret->cipher_list = 2513 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2514 goto err; 2515 } 2516 if (s->internal->cipher_list_by_id != NULL) { 2517 if ((ret->internal->cipher_list_by_id = 2518 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2519 goto err; 2520 } 2521 2522 /* Dup the client_CA list */ 2523 if (s->internal->client_CA != NULL) { 2524 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2525 ret->internal->client_CA = sk; 2526 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2527 xn = sk_X509_NAME_value(sk, i); 2528 if (sk_X509_NAME_set(sk, i, 2529 X509_NAME_dup(xn)) == NULL) { 2530 X509_NAME_free(xn); 2531 goto err; 2532 } 2533 } 2534 } 2535 2536 return ret; 2537 err: 2538 SSL_free(ret); 2539 return NULL; 2540 } 2541 2542 void 2543 ssl_clear_cipher_state(SSL *s) 2544 { 2545 ssl_clear_cipher_read_state(s); 2546 ssl_clear_cipher_write_state(s); 2547 } 2548 2549 void 2550 ssl_clear_cipher_read_state(SSL *s) 2551 { 2552 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2553 s->enc_read_ctx = NULL; 2554 EVP_MD_CTX_free(s->read_hash); 2555 s->read_hash = NULL; 2556 2557 if (s->internal->aead_read_ctx != NULL) { 2558 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2559 free(s->internal->aead_read_ctx); 2560 s->internal->aead_read_ctx = NULL; 2561 } 2562 } 2563 2564 void 2565 ssl_clear_cipher_write_state(SSL *s) 2566 { 2567 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2568 s->internal->enc_write_ctx = NULL; 2569 EVP_MD_CTX_free(s->internal->write_hash); 2570 s->internal->write_hash = NULL; 2571 2572 if (s->internal->aead_write_ctx != NULL) { 2573 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2574 free(s->internal->aead_write_ctx); 2575 s->internal->aead_write_ctx = NULL; 2576 } 2577 } 2578 2579 /* Fix this function so that it takes an optional type parameter */ 2580 X509 * 2581 SSL_get_certificate(const SSL *s) 2582 { 2583 return (s->cert->key->x509); 2584 } 2585 2586 /* Fix this function so that it takes an optional type parameter */ 2587 EVP_PKEY * 2588 SSL_get_privatekey(const SSL *s) 2589 { 2590 return (s->cert->key->privatekey); 2591 } 2592 2593 const SSL_CIPHER * 2594 SSL_get_current_cipher(const SSL *s) 2595 { 2596 if ((s->session != NULL) && (s->session->cipher != NULL)) 2597 return (s->session->cipher); 2598 return (NULL); 2599 } 2600 const void * 2601 SSL_get_current_compression(SSL *s) 2602 { 2603 return (NULL); 2604 } 2605 2606 const void * 2607 SSL_get_current_expansion(SSL *s) 2608 { 2609 return (NULL); 2610 } 2611 2612 size_t 2613 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2614 { 2615 size_t len = sizeof(s->s3->client_random); 2616 2617 if (out == NULL) 2618 return len; 2619 2620 if (len > max_out) 2621 len = max_out; 2622 2623 memcpy(out, s->s3->client_random, len); 2624 2625 return len; 2626 } 2627 2628 size_t 2629 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2630 { 2631 size_t len = sizeof(s->s3->server_random); 2632 2633 if (out == NULL) 2634 return len; 2635 2636 if (len > max_out) 2637 len = max_out; 2638 2639 memcpy(out, s->s3->server_random, len); 2640 2641 return len; 2642 } 2643 2644 int 2645 ssl_init_wbio_buffer(SSL *s, int push) 2646 { 2647 BIO *bbio; 2648 2649 if (s->bbio == NULL) { 2650 bbio = BIO_new(BIO_f_buffer()); 2651 if (bbio == NULL) 2652 return (0); 2653 s->bbio = bbio; 2654 } else { 2655 bbio = s->bbio; 2656 if (s->bbio == s->wbio) 2657 s->wbio = BIO_pop(s->wbio); 2658 } 2659 (void)BIO_reset(bbio); 2660 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2661 if (!BIO_set_read_buffer_size(bbio, 1)) { 2662 SSLerror(s, ERR_R_BUF_LIB); 2663 return (0); 2664 } 2665 if (push) { 2666 if (s->wbio != bbio) 2667 s->wbio = BIO_push(bbio, s->wbio); 2668 } else { 2669 if (s->wbio == bbio) 2670 s->wbio = BIO_pop(bbio); 2671 } 2672 return (1); 2673 } 2674 2675 void 2676 ssl_free_wbio_buffer(SSL *s) 2677 { 2678 if (s == NULL) 2679 return; 2680 2681 if (s->bbio == NULL) 2682 return; 2683 2684 if (s->bbio == s->wbio) { 2685 /* remove buffering */ 2686 s->wbio = BIO_pop(s->wbio); 2687 } 2688 BIO_free(s->bbio); 2689 s->bbio = NULL; 2690 } 2691 2692 void 2693 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2694 { 2695 ctx->internal->quiet_shutdown = mode; 2696 } 2697 2698 int 2699 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2700 { 2701 return (ctx->internal->quiet_shutdown); 2702 } 2703 2704 void 2705 SSL_set_quiet_shutdown(SSL *s, int mode) 2706 { 2707 s->internal->quiet_shutdown = mode; 2708 } 2709 2710 int 2711 SSL_get_quiet_shutdown(const SSL *s) 2712 { 2713 return (s->internal->quiet_shutdown); 2714 } 2715 2716 void 2717 SSL_set_shutdown(SSL *s, int mode) 2718 { 2719 s->internal->shutdown = mode; 2720 } 2721 2722 int 2723 SSL_get_shutdown(const SSL *s) 2724 { 2725 return (s->internal->shutdown); 2726 } 2727 2728 int 2729 SSL_version(const SSL *s) 2730 { 2731 return (s->version); 2732 } 2733 2734 SSL_CTX * 2735 SSL_get_SSL_CTX(const SSL *ssl) 2736 { 2737 return (ssl->ctx); 2738 } 2739 2740 SSL_CTX * 2741 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2742 { 2743 if (ssl->ctx == ctx) 2744 return (ssl->ctx); 2745 if (ctx == NULL) 2746 ctx = ssl->initial_ctx; 2747 2748 ssl_cert_free(ssl->cert); 2749 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2750 2751 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2752 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2753 ssl->ctx = ctx; 2754 return (ssl->ctx); 2755 } 2756 2757 int 2758 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2759 { 2760 return (X509_STORE_set_default_paths(ctx->cert_store)); 2761 } 2762 2763 int 2764 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2765 const char *CApath) 2766 { 2767 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2768 } 2769 2770 int 2771 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2772 { 2773 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2774 } 2775 2776 void 2777 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2778 { 2779 ssl->internal->info_callback = cb; 2780 } 2781 2782 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2783 { 2784 return (ssl->internal->info_callback); 2785 } 2786 2787 int 2788 SSL_state(const SSL *ssl) 2789 { 2790 return (S3I(ssl)->hs.state); 2791 } 2792 2793 void 2794 SSL_set_state(SSL *ssl, int state) 2795 { 2796 S3I(ssl)->hs.state = state; 2797 } 2798 2799 void 2800 SSL_set_verify_result(SSL *ssl, long arg) 2801 { 2802 ssl->verify_result = arg; 2803 } 2804 2805 long 2806 SSL_get_verify_result(const SSL *ssl) 2807 { 2808 return (ssl->verify_result); 2809 } 2810 2811 int 2812 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2813 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2814 { 2815 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2816 new_func, dup_func, free_func)); 2817 } 2818 2819 int 2820 SSL_set_ex_data(SSL *s, int idx, void *arg) 2821 { 2822 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2823 } 2824 2825 void * 2826 SSL_get_ex_data(const SSL *s, int idx) 2827 { 2828 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2829 } 2830 2831 int 2832 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2833 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2834 { 2835 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2836 new_func, dup_func, free_func)); 2837 } 2838 2839 int 2840 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2841 { 2842 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2843 } 2844 2845 void * 2846 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2847 { 2848 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2849 } 2850 2851 int 2852 ssl_ok(SSL *s) 2853 { 2854 return (1); 2855 } 2856 2857 X509_STORE * 2858 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2859 { 2860 return (ctx->cert_store); 2861 } 2862 2863 void 2864 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2865 { 2866 X509_STORE_free(ctx->cert_store); 2867 ctx->cert_store = store; 2868 } 2869 2870 X509 * 2871 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2872 { 2873 if (ctx->internal->cert == NULL) 2874 return NULL; 2875 2876 return ctx->internal->cert->key->x509; 2877 } 2878 2879 int 2880 SSL_want(const SSL *s) 2881 { 2882 return (s->internal->rwstate); 2883 } 2884 2885 void 2886 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2887 int keylength)) 2888 { 2889 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2890 } 2891 2892 void 2893 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2894 int keylength)) 2895 { 2896 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2897 } 2898 2899 void 2900 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2901 int keylength)) 2902 { 2903 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2904 } 2905 2906 void 2907 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2908 int keylength)) 2909 { 2910 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2911 } 2912 2913 void 2914 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2915 int is_export, int keylength)) 2916 { 2917 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2918 (void (*)(void))ecdh); 2919 } 2920 2921 void 2922 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2923 int keylength)) 2924 { 2925 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2926 } 2927 2928 2929 void 2930 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2931 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2932 { 2933 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2934 (void (*)(void))cb); 2935 } 2936 2937 void 2938 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2939 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2940 { 2941 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2942 } 2943 2944 void 2945 SSL_set_debug(SSL *s, int debug) 2946 { 2947 s->internal->debug = debug; 2948 } 2949 2950 int 2951 SSL_cache_hit(SSL *s) 2952 { 2953 return (s->internal->hit); 2954 } 2955 2956 int 2957 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 2958 { 2959 return ctx->internal->min_version; 2960 } 2961 2962 int 2963 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2964 { 2965 return ssl_version_set_min(ctx->method, version, 2966 ctx->internal->max_version, &ctx->internal->min_version); 2967 } 2968 2969 int 2970 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 2971 { 2972 return ctx->internal->max_version; 2973 } 2974 2975 int 2976 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2977 { 2978 return ssl_version_set_max(ctx->method, version, 2979 ctx->internal->min_version, &ctx->internal->max_version); 2980 } 2981 2982 int 2983 SSL_get_min_proto_version(SSL *ssl) 2984 { 2985 return ssl->internal->min_version; 2986 } 2987 2988 int 2989 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2990 { 2991 return ssl_version_set_min(ssl->method, version, 2992 ssl->internal->max_version, &ssl->internal->min_version); 2993 } 2994 int 2995 SSL_get_max_proto_version(SSL *ssl) 2996 { 2997 return ssl->internal->max_version; 2998 } 2999 3000 int 3001 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3002 { 3003 return ssl_version_set_max(ssl->method, version, 3004 ssl->internal->min_version, &ssl->internal->max_version); 3005 } 3006 3007 static int 3008 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3009 { 3010 SSL_CIPHER const *a = a_; 3011 SSL_CIPHER const *b = b_; 3012 return ssl_cipher_id_cmp(a, b); 3013 } 3014 3015 SSL_CIPHER * 3016 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3017 { 3018 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3019 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3020 } 3021