1 /* $OpenBSD: ssl_lib.c,v 1.219 2020/07/14 18:47:50 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 tls13_ctx_free(s->internal->tls13); 197 s->internal->tls13 = NULL; 198 199 BUF_MEM_free(s->internal->init_buf); 200 s->internal->init_buf = NULL; 201 202 ssl_clear_cipher_state(s); 203 204 s->internal->first_packet = 0; 205 206 /* 207 * Check to see if we were changed into a different method, if 208 * so, revert back if we are not doing session-id reuse. 209 */ 210 if (!s->internal->in_handshake && (s->session == NULL) && 211 (s->method != s->ctx->method)) { 212 s->method->internal->ssl_free(s); 213 s->method = s->ctx->method; 214 if (!s->method->internal->ssl_new(s)) 215 return (0); 216 } else 217 s->method->internal->ssl_clear(s); 218 219 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 220 221 return (1); 222 } 223 224 /* Used to change an SSL_CTXs default SSL method type */ 225 int 226 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 227 { 228 STACK_OF(SSL_CIPHER) *sk; 229 230 ctx->method = meth; 231 232 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 233 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 234 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 235 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 236 return (0); 237 } 238 return (1); 239 } 240 241 SSL * 242 SSL_new(SSL_CTX *ctx) 243 { 244 SSL *s; 245 246 if (ctx == NULL) { 247 SSLerrorx(SSL_R_NULL_SSL_CTX); 248 return (NULL); 249 } 250 if (ctx->method == NULL) { 251 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 252 return (NULL); 253 } 254 255 if ((s = calloc(1, sizeof(*s))) == NULL) { 256 SSLerrorx(ERR_R_MALLOC_FAILURE); 257 return (NULL); 258 } 259 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 260 free(s); 261 SSLerrorx(ERR_R_MALLOC_FAILURE); 262 return (NULL); 263 } 264 265 s->internal->min_version = ctx->internal->min_version; 266 s->internal->max_version = ctx->internal->max_version; 267 268 s->internal->options = ctx->internal->options; 269 s->internal->mode = ctx->internal->mode; 270 s->internal->max_cert_list = ctx->internal->max_cert_list; 271 272 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 273 goto err; 274 275 s->internal->read_ahead = ctx->internal->read_ahead; 276 s->internal->msg_callback = ctx->internal->msg_callback; 277 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 278 s->verify_mode = ctx->verify_mode; 279 s->sid_ctx_length = ctx->sid_ctx_length; 280 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 281 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 282 s->internal->verify_callback = ctx->internal->default_verify_callback; 283 s->internal->generate_session_id = ctx->internal->generate_session_id; 284 285 s->param = X509_VERIFY_PARAM_new(); 286 if (!s->param) 287 goto err; 288 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 289 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 290 s->max_send_fragment = ctx->internal->max_send_fragment; 291 292 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 293 s->ctx = ctx; 294 s->internal->tlsext_debug_cb = 0; 295 s->internal->tlsext_debug_arg = NULL; 296 s->internal->tlsext_ticket_expected = 0; 297 s->tlsext_status_type = -1; 298 s->internal->tlsext_status_expected = 0; 299 s->internal->tlsext_ocsp_ids = NULL; 300 s->internal->tlsext_ocsp_exts = NULL; 301 s->internal->tlsext_ocsp_resp = NULL; 302 s->internal->tlsext_ocsp_resp_len = 0; 303 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 304 s->initial_ctx = ctx; 305 306 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 307 s->internal->tlsext_ecpointformatlist = 308 calloc(ctx->internal->tlsext_ecpointformatlist_length, 309 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 310 if (s->internal->tlsext_ecpointformatlist == NULL) 311 goto err; 312 memcpy(s->internal->tlsext_ecpointformatlist, 313 ctx->internal->tlsext_ecpointformatlist, 314 ctx->internal->tlsext_ecpointformatlist_length * 315 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 316 s->internal->tlsext_ecpointformatlist_length = 317 ctx->internal->tlsext_ecpointformatlist_length; 318 } 319 if (ctx->internal->tlsext_supportedgroups != NULL) { 320 s->internal->tlsext_supportedgroups = 321 calloc(ctx->internal->tlsext_supportedgroups_length, 322 sizeof(ctx->internal->tlsext_supportedgroups[0])); 323 if (s->internal->tlsext_supportedgroups == NULL) 324 goto err; 325 memcpy(s->internal->tlsext_supportedgroups, 326 ctx->internal->tlsext_supportedgroups, 327 ctx->internal->tlsext_supportedgroups_length * 328 sizeof(ctx->internal->tlsext_supportedgroups[0])); 329 s->internal->tlsext_supportedgroups_length = 330 ctx->internal->tlsext_supportedgroups_length; 331 } 332 333 if (s->ctx->internal->alpn_client_proto_list != NULL) { 334 s->internal->alpn_client_proto_list = 335 malloc(s->ctx->internal->alpn_client_proto_list_len); 336 if (s->internal->alpn_client_proto_list == NULL) 337 goto err; 338 memcpy(s->internal->alpn_client_proto_list, 339 s->ctx->internal->alpn_client_proto_list, 340 s->ctx->internal->alpn_client_proto_list_len); 341 s->internal->alpn_client_proto_list_len = 342 s->ctx->internal->alpn_client_proto_list_len; 343 } 344 345 s->verify_result = X509_V_OK; 346 347 s->method = ctx->method; 348 349 if (!s->method->internal->ssl_new(s)) 350 goto err; 351 352 s->references = 1; 353 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 354 355 SSL_clear(s); 356 357 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 358 359 return (s); 360 361 err: 362 SSL_free(s); 363 SSLerrorx(ERR_R_MALLOC_FAILURE); 364 return (NULL); 365 } 366 367 int 368 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 369 unsigned int sid_ctx_len) 370 { 371 if (sid_ctx_len > sizeof ctx->sid_ctx) { 372 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 373 return (0); 374 } 375 ctx->sid_ctx_length = sid_ctx_len; 376 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 377 378 return (1); 379 } 380 381 int 382 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 383 unsigned int sid_ctx_len) 384 { 385 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 386 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 387 return (0); 388 } 389 ssl->sid_ctx_length = sid_ctx_len; 390 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 391 392 return (1); 393 } 394 395 int 396 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 397 { 398 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 399 ctx->internal->generate_session_id = cb; 400 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 401 return (1); 402 } 403 404 int 405 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 406 { 407 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 408 ssl->internal->generate_session_id = cb; 409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 410 return (1); 411 } 412 413 int 414 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 415 unsigned int id_len) 416 { 417 /* 418 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 419 * shows how we can "construct" a session to give us the desired 420 * check - ie. to find if there's a session in the hash table 421 * that would conflict with any new session built out of this 422 * id/id_len and the ssl_version in use by this SSL. 423 */ 424 SSL_SESSION r, *p; 425 426 if (id_len > sizeof r.session_id) 427 return (0); 428 429 r.ssl_version = ssl->version; 430 r.session_id_length = id_len; 431 memcpy(r.session_id, id, id_len); 432 433 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 434 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 435 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 436 return (p != NULL); 437 } 438 439 int 440 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 441 { 442 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 443 } 444 445 int 446 SSL_set_purpose(SSL *s, int purpose) 447 { 448 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 449 } 450 451 int 452 SSL_CTX_set_trust(SSL_CTX *s, int trust) 453 { 454 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 455 } 456 457 int 458 SSL_set_trust(SSL *s, int trust) 459 { 460 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 461 } 462 463 int 464 SSL_set1_host(SSL *s, const char *hostname) 465 { 466 struct in_addr ina; 467 struct in6_addr in6a; 468 469 if (hostname != NULL && *hostname != '\0' && 470 (inet_pton(AF_INET, hostname, &ina) == 1 || 471 inet_pton(AF_INET6, hostname, &in6a) == 1)) 472 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname); 473 else 474 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 475 } 476 477 X509_VERIFY_PARAM * 478 SSL_CTX_get0_param(SSL_CTX *ctx) 479 { 480 return (ctx->param); 481 } 482 483 int 484 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 485 { 486 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 487 } 488 489 X509_VERIFY_PARAM * 490 SSL_get0_param(SSL *ssl) 491 { 492 return (ssl->param); 493 } 494 495 int 496 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 497 { 498 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 499 } 500 501 void 502 SSL_free(SSL *s) 503 { 504 int i; 505 506 if (s == NULL) 507 return; 508 509 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 510 if (i > 0) 511 return; 512 513 X509_VERIFY_PARAM_free(s->param); 514 515 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 516 517 if (s->bbio != NULL) { 518 /* If the buffering BIO is in place, pop it off */ 519 if (s->bbio == s->wbio) { 520 s->wbio = BIO_pop(s->wbio); 521 } 522 BIO_free(s->bbio); 523 s->bbio = NULL; 524 } 525 526 if (s->rbio != s->wbio) 527 BIO_free_all(s->rbio); 528 BIO_free_all(s->wbio); 529 530 tls13_ctx_free(s->internal->tls13); 531 532 BUF_MEM_free(s->internal->init_buf); 533 534 /* add extra stuff */ 535 sk_SSL_CIPHER_free(s->cipher_list); 536 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 537 538 /* Make the next call work :-) */ 539 if (s->session != NULL) { 540 ssl_clear_bad_session(s); 541 SSL_SESSION_free(s->session); 542 } 543 544 ssl_clear_cipher_state(s); 545 546 ssl_cert_free(s->cert); 547 548 free(s->tlsext_hostname); 549 SSL_CTX_free(s->initial_ctx); 550 551 free(s->internal->tlsext_ecpointformatlist); 552 free(s->internal->tlsext_supportedgroups); 553 554 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 555 X509_EXTENSION_free); 556 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 557 free(s->internal->tlsext_ocsp_resp); 558 559 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 560 561 if (s->method != NULL) 562 s->method->internal->ssl_free(s); 563 564 SSL_CTX_free(s->ctx); 565 566 free(s->internal->alpn_client_proto_list); 567 568 #ifndef OPENSSL_NO_SRTP 569 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 570 #endif 571 572 free(s->internal); 573 free(s); 574 } 575 576 int 577 SSL_up_ref(SSL *s) 578 { 579 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 580 return (refs > 1) ? 1 : 0; 581 } 582 583 void 584 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 585 { 586 /* If the output buffering BIO is still in place, remove it */ 587 if (s->bbio != NULL) { 588 if (s->wbio == s->bbio) { 589 s->wbio = s->wbio->next_bio; 590 s->bbio->next_bio = NULL; 591 } 592 } 593 594 if (s->rbio != rbio && s->rbio != s->wbio) 595 BIO_free_all(s->rbio); 596 if (s->wbio != wbio) 597 BIO_free_all(s->wbio); 598 s->rbio = rbio; 599 s->wbio = wbio; 600 } 601 602 BIO * 603 SSL_get_rbio(const SSL *s) 604 { 605 return (s->rbio); 606 } 607 608 BIO * 609 SSL_get_wbio(const SSL *s) 610 { 611 return (s->wbio); 612 } 613 614 int 615 SSL_get_fd(const SSL *s) 616 { 617 return (SSL_get_rfd(s)); 618 } 619 620 int 621 SSL_get_rfd(const SSL *s) 622 { 623 int ret = -1; 624 BIO *b, *r; 625 626 b = SSL_get_rbio(s); 627 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 628 if (r != NULL) 629 BIO_get_fd(r, &ret); 630 return (ret); 631 } 632 633 int 634 SSL_get_wfd(const SSL *s) 635 { 636 int ret = -1; 637 BIO *b, *r; 638 639 b = SSL_get_wbio(s); 640 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 641 if (r != NULL) 642 BIO_get_fd(r, &ret); 643 return (ret); 644 } 645 646 int 647 SSL_set_fd(SSL *s, int fd) 648 { 649 int ret = 0; 650 BIO *bio = NULL; 651 652 bio = BIO_new(BIO_s_socket()); 653 654 if (bio == NULL) { 655 SSLerror(s, ERR_R_BUF_LIB); 656 goto err; 657 } 658 BIO_set_fd(bio, fd, BIO_NOCLOSE); 659 SSL_set_bio(s, bio, bio); 660 ret = 1; 661 err: 662 return (ret); 663 } 664 665 int 666 SSL_set_wfd(SSL *s, int fd) 667 { 668 int ret = 0; 669 BIO *bio = NULL; 670 671 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 672 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 673 bio = BIO_new(BIO_s_socket()); 674 675 if (bio == NULL) { 676 SSLerror(s, ERR_R_BUF_LIB); 677 goto err; 678 } 679 BIO_set_fd(bio, fd, BIO_NOCLOSE); 680 SSL_set_bio(s, SSL_get_rbio(s), bio); 681 } else 682 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 683 ret = 1; 684 err: 685 return (ret); 686 } 687 688 int 689 SSL_set_rfd(SSL *s, int fd) 690 { 691 int ret = 0; 692 BIO *bio = NULL; 693 694 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 695 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 696 bio = BIO_new(BIO_s_socket()); 697 698 if (bio == NULL) { 699 SSLerror(s, ERR_R_BUF_LIB); 700 goto err; 701 } 702 BIO_set_fd(bio, fd, BIO_NOCLOSE); 703 SSL_set_bio(s, bio, SSL_get_wbio(s)); 704 } else 705 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 706 ret = 1; 707 err: 708 return (ret); 709 } 710 711 712 /* return length of latest Finished message we sent, copy to 'buf' */ 713 size_t 714 SSL_get_finished(const SSL *s, void *buf, size_t count) 715 { 716 size_t ret; 717 718 ret = S3I(s)->tmp.finish_md_len; 719 if (count > ret) 720 count = ret; 721 memcpy(buf, S3I(s)->tmp.finish_md, count); 722 return (ret); 723 } 724 725 /* return length of latest Finished message we expected, copy to 'buf' */ 726 size_t 727 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 728 { 729 size_t ret; 730 731 ret = S3I(s)->tmp.peer_finish_md_len; 732 if (count > ret) 733 count = ret; 734 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 735 return (ret); 736 } 737 738 739 int 740 SSL_get_verify_mode(const SSL *s) 741 { 742 return (s->verify_mode); 743 } 744 745 int 746 SSL_get_verify_depth(const SSL *s) 747 { 748 return (X509_VERIFY_PARAM_get_depth(s->param)); 749 } 750 751 int 752 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 753 { 754 return (s->internal->verify_callback); 755 } 756 757 int 758 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 759 { 760 return (ctx->verify_mode); 761 } 762 763 int 764 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 765 { 766 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 767 } 768 769 int 770 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 771 { 772 return (ctx->internal->default_verify_callback); 773 } 774 775 void 776 SSL_set_verify(SSL *s, int mode, 777 int (*callback)(int ok, X509_STORE_CTX *ctx)) 778 { 779 s->verify_mode = mode; 780 if (callback != NULL) 781 s->internal->verify_callback = callback; 782 } 783 784 void 785 SSL_set_verify_depth(SSL *s, int depth) 786 { 787 X509_VERIFY_PARAM_set_depth(s->param, depth); 788 } 789 790 void 791 SSL_set_read_ahead(SSL *s, int yes) 792 { 793 s->internal->read_ahead = yes; 794 } 795 796 int 797 SSL_get_read_ahead(const SSL *s) 798 { 799 return (s->internal->read_ahead); 800 } 801 802 int 803 SSL_pending(const SSL *s) 804 { 805 return (s->method->internal->ssl_pending(s)); 806 } 807 808 X509 * 809 SSL_get_peer_certificate(const SSL *s) 810 { 811 X509 *r; 812 813 if ((s == NULL) || (s->session == NULL)) 814 r = NULL; 815 else 816 r = s->session->peer; 817 818 if (r == NULL) 819 return (r); 820 821 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 822 823 return (r); 824 } 825 826 STACK_OF(X509) * 827 SSL_get_peer_cert_chain(const SSL *s) 828 { 829 STACK_OF(X509) *r; 830 831 if ((s == NULL) || (s->session == NULL) || 832 (SSI(s)->sess_cert == NULL)) 833 r = NULL; 834 else 835 r = SSI(s)->sess_cert->cert_chain; 836 837 /* 838 * If we are a client, cert_chain includes the peer's own 839 * certificate; 840 * if we are a server, it does not. 841 */ 842 return (r); 843 } 844 845 /* 846 * Now in theory, since the calling process own 't' it should be safe to 847 * modify. We need to be able to read f without being hassled 848 */ 849 int 850 SSL_copy_session_id(SSL *t, const SSL *f) 851 { 852 CERT *tmp; 853 854 /* Do we need to do SSL locking? */ 855 if (!SSL_set_session(t, SSL_get_session(f))) 856 return 0; 857 858 /* What if we are set up for one protocol but want to talk another? */ 859 if (t->method != f->method) { 860 t->method->internal->ssl_free(t); 861 t->method = f->method; 862 if (!t->method->internal->ssl_new(t)) 863 return 0; 864 } 865 866 tmp = t->cert; 867 if (f->cert != NULL) { 868 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 869 t->cert = f->cert; 870 } else 871 t->cert = NULL; 872 ssl_cert_free(tmp); 873 874 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 875 return 0; 876 877 return 1; 878 } 879 880 /* Fix this so it checks all the valid key/cert options */ 881 int 882 SSL_CTX_check_private_key(const SSL_CTX *ctx) 883 { 884 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 885 (ctx->internal->cert->key->x509 == NULL)) { 886 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 887 return (0); 888 } 889 if (ctx->internal->cert->key->privatekey == NULL) { 890 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 891 return (0); 892 } 893 return (X509_check_private_key(ctx->internal->cert->key->x509, 894 ctx->internal->cert->key->privatekey)); 895 } 896 897 /* Fix this function so that it takes an optional type parameter */ 898 int 899 SSL_check_private_key(const SSL *ssl) 900 { 901 if (ssl == NULL) { 902 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 903 return (0); 904 } 905 if (ssl->cert == NULL) { 906 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 907 return (0); 908 } 909 if (ssl->cert->key->x509 == NULL) { 910 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->privatekey == NULL) { 914 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 915 return (0); 916 } 917 return (X509_check_private_key(ssl->cert->key->x509, 918 ssl->cert->key->privatekey)); 919 } 920 921 int 922 SSL_accept(SSL *s) 923 { 924 if (s->internal->handshake_func == NULL) 925 SSL_set_accept_state(s); /* Not properly initialized yet */ 926 927 return (s->method->internal->ssl_accept(s)); 928 } 929 930 int 931 SSL_connect(SSL *s) 932 { 933 if (s->internal->handshake_func == NULL) 934 SSL_set_connect_state(s); /* Not properly initialized yet */ 935 936 return (s->method->internal->ssl_connect(s)); 937 } 938 939 int 940 SSL_is_server(const SSL *s) 941 { 942 return s->server; 943 } 944 945 static long 946 ssl_get_default_timeout() 947 { 948 /* 949 * 2 hours, the 24 hours mentioned in the TLSv1 spec 950 * is way too long for http, the cache would over fill. 951 */ 952 return (2 * 60 * 60); 953 } 954 955 long 956 SSL_get_default_timeout(const SSL *s) 957 { 958 return (ssl_get_default_timeout()); 959 } 960 961 int 962 SSL_read(SSL *s, void *buf, int num) 963 { 964 if (s->internal->handshake_func == NULL) { 965 SSLerror(s, SSL_R_UNINITIALIZED); 966 return (-1); 967 } 968 969 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 970 s->internal->rwstate = SSL_NOTHING; 971 return (0); 972 } 973 return ssl3_read(s, buf, num); 974 } 975 976 int 977 SSL_peek(SSL *s, void *buf, int num) 978 { 979 if (s->internal->handshake_func == NULL) { 980 SSLerror(s, SSL_R_UNINITIALIZED); 981 return (-1); 982 } 983 984 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 985 return (0); 986 } 987 return ssl3_peek(s, buf, num); 988 } 989 990 int 991 SSL_write(SSL *s, const void *buf, int num) 992 { 993 if (s->internal->handshake_func == NULL) { 994 SSLerror(s, SSL_R_UNINITIALIZED); 995 return (-1); 996 } 997 998 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 999 s->internal->rwstate = SSL_NOTHING; 1000 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 1001 return (-1); 1002 } 1003 return ssl3_write(s, buf, num); 1004 } 1005 1006 int 1007 SSL_shutdown(SSL *s) 1008 { 1009 /* 1010 * Note that this function behaves differently from what one might 1011 * expect. Return values are 0 for no success (yet), 1012 * 1 for success; but calling it once is usually not enough, 1013 * even if blocking I/O is used (see ssl3_shutdown). 1014 */ 1015 1016 if (s->internal->handshake_func == NULL) { 1017 SSLerror(s, SSL_R_UNINITIALIZED); 1018 return (-1); 1019 } 1020 1021 if (s != NULL && !SSL_in_init(s)) 1022 return (s->method->internal->ssl_shutdown(s)); 1023 1024 return (1); 1025 } 1026 1027 int 1028 SSL_renegotiate(SSL *s) 1029 { 1030 if (s->internal->renegotiate == 0) 1031 s->internal->renegotiate = 1; 1032 1033 s->internal->new_session = 1; 1034 1035 return (s->method->internal->ssl_renegotiate(s)); 1036 } 1037 1038 int 1039 SSL_renegotiate_abbreviated(SSL *s) 1040 { 1041 if (s->internal->renegotiate == 0) 1042 s->internal->renegotiate = 1; 1043 1044 s->internal->new_session = 0; 1045 1046 return (s->method->internal->ssl_renegotiate(s)); 1047 } 1048 1049 int 1050 SSL_renegotiate_pending(SSL *s) 1051 { 1052 /* 1053 * Becomes true when negotiation is requested; 1054 * false again once a handshake has finished. 1055 */ 1056 return (s->internal->renegotiate != 0); 1057 } 1058 1059 long 1060 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1061 { 1062 long l; 1063 1064 switch (cmd) { 1065 case SSL_CTRL_GET_READ_AHEAD: 1066 return (s->internal->read_ahead); 1067 case SSL_CTRL_SET_READ_AHEAD: 1068 l = s->internal->read_ahead; 1069 s->internal->read_ahead = larg; 1070 return (l); 1071 1072 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1073 s->internal->msg_callback_arg = parg; 1074 return (1); 1075 1076 case SSL_CTRL_OPTIONS: 1077 return (s->internal->options|=larg); 1078 case SSL_CTRL_CLEAR_OPTIONS: 1079 return (s->internal->options&=~larg); 1080 case SSL_CTRL_MODE: 1081 return (s->internal->mode|=larg); 1082 case SSL_CTRL_CLEAR_MODE: 1083 return (s->internal->mode &=~larg); 1084 case SSL_CTRL_GET_MAX_CERT_LIST: 1085 return (s->internal->max_cert_list); 1086 case SSL_CTRL_SET_MAX_CERT_LIST: 1087 l = s->internal->max_cert_list; 1088 s->internal->max_cert_list = larg; 1089 return (l); 1090 case SSL_CTRL_SET_MTU: 1091 #ifndef OPENSSL_NO_DTLS1 1092 if (larg < (long)dtls1_min_mtu()) 1093 return (0); 1094 #endif 1095 if (SSL_IS_DTLS(s)) { 1096 D1I(s)->mtu = larg; 1097 return (larg); 1098 } 1099 return (0); 1100 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1101 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1102 return (0); 1103 s->max_send_fragment = larg; 1104 return (1); 1105 case SSL_CTRL_GET_RI_SUPPORT: 1106 if (s->s3) 1107 return (S3I(s)->send_connection_binding); 1108 else return (0); 1109 default: 1110 if (SSL_IS_DTLS(s)) 1111 return dtls1_ctrl(s, cmd, larg, parg); 1112 return ssl3_ctrl(s, cmd, larg, parg); 1113 } 1114 } 1115 1116 long 1117 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1118 { 1119 switch (cmd) { 1120 case SSL_CTRL_SET_MSG_CALLBACK: 1121 s->internal->msg_callback = (void (*)(int write_p, int version, 1122 int content_type, const void *buf, size_t len, 1123 SSL *ssl, void *arg))(fp); 1124 return (1); 1125 1126 default: 1127 return (ssl3_callback_ctrl(s, cmd, fp)); 1128 } 1129 } 1130 1131 struct lhash_st_SSL_SESSION * 1132 SSL_CTX_sessions(SSL_CTX *ctx) 1133 { 1134 return (ctx->internal->sessions); 1135 } 1136 1137 long 1138 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1139 { 1140 long l; 1141 1142 switch (cmd) { 1143 case SSL_CTRL_GET_READ_AHEAD: 1144 return (ctx->internal->read_ahead); 1145 case SSL_CTRL_SET_READ_AHEAD: 1146 l = ctx->internal->read_ahead; 1147 ctx->internal->read_ahead = larg; 1148 return (l); 1149 1150 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1151 ctx->internal->msg_callback_arg = parg; 1152 return (1); 1153 1154 case SSL_CTRL_GET_MAX_CERT_LIST: 1155 return (ctx->internal->max_cert_list); 1156 case SSL_CTRL_SET_MAX_CERT_LIST: 1157 l = ctx->internal->max_cert_list; 1158 ctx->internal->max_cert_list = larg; 1159 return (l); 1160 1161 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1162 l = ctx->internal->session_cache_size; 1163 ctx->internal->session_cache_size = larg; 1164 return (l); 1165 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1166 return (ctx->internal->session_cache_size); 1167 case SSL_CTRL_SET_SESS_CACHE_MODE: 1168 l = ctx->internal->session_cache_mode; 1169 ctx->internal->session_cache_mode = larg; 1170 return (l); 1171 case SSL_CTRL_GET_SESS_CACHE_MODE: 1172 return (ctx->internal->session_cache_mode); 1173 1174 case SSL_CTRL_SESS_NUMBER: 1175 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1176 case SSL_CTRL_SESS_CONNECT: 1177 return (ctx->internal->stats.sess_connect); 1178 case SSL_CTRL_SESS_CONNECT_GOOD: 1179 return (ctx->internal->stats.sess_connect_good); 1180 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1181 return (ctx->internal->stats.sess_connect_renegotiate); 1182 case SSL_CTRL_SESS_ACCEPT: 1183 return (ctx->internal->stats.sess_accept); 1184 case SSL_CTRL_SESS_ACCEPT_GOOD: 1185 return (ctx->internal->stats.sess_accept_good); 1186 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1187 return (ctx->internal->stats.sess_accept_renegotiate); 1188 case SSL_CTRL_SESS_HIT: 1189 return (ctx->internal->stats.sess_hit); 1190 case SSL_CTRL_SESS_CB_HIT: 1191 return (ctx->internal->stats.sess_cb_hit); 1192 case SSL_CTRL_SESS_MISSES: 1193 return (ctx->internal->stats.sess_miss); 1194 case SSL_CTRL_SESS_TIMEOUTS: 1195 return (ctx->internal->stats.sess_timeout); 1196 case SSL_CTRL_SESS_CACHE_FULL: 1197 return (ctx->internal->stats.sess_cache_full); 1198 case SSL_CTRL_OPTIONS: 1199 return (ctx->internal->options|=larg); 1200 case SSL_CTRL_CLEAR_OPTIONS: 1201 return (ctx->internal->options&=~larg); 1202 case SSL_CTRL_MODE: 1203 return (ctx->internal->mode|=larg); 1204 case SSL_CTRL_CLEAR_MODE: 1205 return (ctx->internal->mode&=~larg); 1206 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1207 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1208 return (0); 1209 ctx->internal->max_send_fragment = larg; 1210 return (1); 1211 default: 1212 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1213 } 1214 } 1215 1216 long 1217 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1218 { 1219 switch (cmd) { 1220 case SSL_CTRL_SET_MSG_CALLBACK: 1221 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1222 int content_type, const void *buf, size_t len, SSL *ssl, 1223 void *arg))(fp); 1224 return (1); 1225 1226 default: 1227 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1228 } 1229 } 1230 1231 int 1232 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1233 { 1234 long l; 1235 1236 l = a->id - b->id; 1237 if (l == 0L) 1238 return (0); 1239 else 1240 return ((l > 0) ? 1:-1); 1241 } 1242 1243 int 1244 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1245 const SSL_CIPHER * const *bp) 1246 { 1247 long l; 1248 1249 l = (*ap)->id - (*bp)->id; 1250 if (l == 0L) 1251 return (0); 1252 else 1253 return ((l > 0) ? 1:-1); 1254 } 1255 1256 /* 1257 * Return a STACK of the ciphers available for the SSL and in order of 1258 * preference. 1259 */ 1260 STACK_OF(SSL_CIPHER) * 1261 SSL_get_ciphers(const SSL *s) 1262 { 1263 if (s != NULL) { 1264 if (s->cipher_list != NULL) { 1265 return (s->cipher_list); 1266 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1267 return (s->ctx->cipher_list); 1268 } 1269 } 1270 return (NULL); 1271 } 1272 1273 STACK_OF(SSL_CIPHER) * 1274 SSL_get_client_ciphers(const SSL *s) 1275 { 1276 if (s == NULL || s->session == NULL || !s->server) 1277 return NULL; 1278 return s->session->ciphers; 1279 } 1280 1281 STACK_OF(SSL_CIPHER) * 1282 SSL_get1_supported_ciphers(SSL *s) 1283 { 1284 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1285 const SSL_CIPHER *cipher; 1286 uint16_t min_vers, max_vers; 1287 int i; 1288 1289 if (s == NULL) 1290 return NULL; 1291 if (!ssl_supported_version_range(s, &min_vers, &max_vers)) 1292 return NULL; 1293 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1294 return NULL; 1295 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1296 return NULL; 1297 1298 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1299 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1300 goto err; 1301 if (!ssl_cipher_is_permitted(cipher, min_vers, max_vers)) 1302 continue; 1303 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1304 goto err; 1305 } 1306 1307 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1308 return supported_ciphers; 1309 1310 err: 1311 sk_SSL_CIPHER_free(supported_ciphers); 1312 return NULL; 1313 } 1314 1315 /* 1316 * Return a STACK of the ciphers available for the SSL and in order of 1317 * algorithm id. 1318 */ 1319 STACK_OF(SSL_CIPHER) * 1320 ssl_get_ciphers_by_id(SSL *s) 1321 { 1322 if (s != NULL) { 1323 if (s->internal->cipher_list_by_id != NULL) { 1324 return (s->internal->cipher_list_by_id); 1325 } else if ((s->ctx != NULL) && 1326 (s->ctx->internal->cipher_list_by_id != NULL)) { 1327 return (s->ctx->internal->cipher_list_by_id); 1328 } 1329 } 1330 return (NULL); 1331 } 1332 1333 /* See if we have any ECC cipher suites. */ 1334 int 1335 ssl_has_ecc_ciphers(SSL *s) 1336 { 1337 STACK_OF(SSL_CIPHER) *ciphers; 1338 unsigned long alg_k, alg_a; 1339 SSL_CIPHER *cipher; 1340 int i; 1341 1342 if (s->version == DTLS1_VERSION) 1343 return 0; 1344 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1345 return 0; 1346 1347 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1348 cipher = sk_SSL_CIPHER_value(ciphers, i); 1349 1350 alg_k = cipher->algorithm_mkey; 1351 alg_a = cipher->algorithm_auth; 1352 1353 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1354 return 1; 1355 } 1356 1357 return 0; 1358 } 1359 1360 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1361 const char * 1362 SSL_get_cipher_list(const SSL *s, int n) 1363 { 1364 SSL_CIPHER *c; 1365 STACK_OF(SSL_CIPHER) *sk; 1366 1367 if (s == NULL) 1368 return (NULL); 1369 sk = SSL_get_ciphers(s); 1370 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1371 return (NULL); 1372 c = sk_SSL_CIPHER_value(sk, n); 1373 if (c == NULL) 1374 return (NULL); 1375 return (c->name); 1376 } 1377 1378 STACK_OF(SSL_CIPHER) * 1379 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1380 { 1381 return ctx->cipher_list; 1382 } 1383 1384 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1385 int 1386 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1387 { 1388 STACK_OF(SSL_CIPHER) *sk; 1389 1390 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1391 &ctx->internal->cipher_list_by_id, str); 1392 /* 1393 * ssl_create_cipher_list may return an empty stack if it 1394 * was unable to find a cipher matching the given rule string 1395 * (for example if the rule string specifies a cipher which 1396 * has been disabled). This is not an error as far as 1397 * ssl_create_cipher_list is concerned, and hence 1398 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1399 * updated. 1400 */ 1401 if (sk == NULL) 1402 return (0); 1403 else if (sk_SSL_CIPHER_num(sk) == 0) { 1404 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1405 return (0); 1406 } 1407 return (1); 1408 } 1409 1410 /* Specify the ciphers to be used by the SSL. */ 1411 int 1412 SSL_set_cipher_list(SSL *s, const char *str) 1413 { 1414 STACK_OF(SSL_CIPHER) *sk; 1415 1416 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1417 &s->internal->cipher_list_by_id, str); 1418 /* see comment in SSL_CTX_set_cipher_list */ 1419 if (sk == NULL) 1420 return (0); 1421 else if (sk_SSL_CIPHER_num(sk) == 0) { 1422 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1423 return (0); 1424 } 1425 return (1); 1426 } 1427 1428 /* works well for SSLv2, not so good for SSLv3 */ 1429 char * 1430 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1431 { 1432 char *end; 1433 STACK_OF(SSL_CIPHER) *sk; 1434 SSL_CIPHER *c; 1435 size_t curlen = 0; 1436 int i; 1437 1438 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1439 return (NULL); 1440 1441 sk = s->session->ciphers; 1442 if (sk_SSL_CIPHER_num(sk) == 0) 1443 return (NULL); 1444 1445 buf[0] = '\0'; 1446 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1447 c = sk_SSL_CIPHER_value(sk, i); 1448 end = buf + curlen; 1449 if (strlcat(buf, c->name, len) >= len || 1450 (curlen = strlcat(buf, ":", len)) >= len) { 1451 /* remove truncated cipher from list */ 1452 *end = '\0'; 1453 break; 1454 } 1455 } 1456 /* remove trailing colon */ 1457 if ((end = strrchr(buf, ':')) != NULL) 1458 *end = '\0'; 1459 return (buf); 1460 } 1461 1462 /* 1463 * Return a servername extension value if provided in Client Hello, or NULL. 1464 * So far, only host_name types are defined (RFC 3546). 1465 */ 1466 const char * 1467 SSL_get_servername(const SSL *s, const int type) 1468 { 1469 if (type != TLSEXT_NAMETYPE_host_name) 1470 return (NULL); 1471 1472 return (s->session && !s->tlsext_hostname ? 1473 s->session->tlsext_hostname : 1474 s->tlsext_hostname); 1475 } 1476 1477 int 1478 SSL_get_servername_type(const SSL *s) 1479 { 1480 if (s->session && 1481 (!s->tlsext_hostname ? 1482 s->session->tlsext_hostname : s->tlsext_hostname)) 1483 return (TLSEXT_NAMETYPE_host_name); 1484 return (-1); 1485 } 1486 1487 /* 1488 * SSL_select_next_proto implements standard protocol selection. It is 1489 * expected that this function is called from the callback set by 1490 * SSL_CTX_set_alpn_select_cb. 1491 * 1492 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1493 * strings. The length byte itself is not included in the length. A byte 1494 * string of length 0 is invalid. No byte string may be truncated. 1495 * 1496 * It returns either: 1497 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1498 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1499 */ 1500 int 1501 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1502 const unsigned char *server, unsigned int server_len, 1503 const unsigned char *client, unsigned int client_len) 1504 { 1505 unsigned int i, j; 1506 const unsigned char *result; 1507 int status = OPENSSL_NPN_UNSUPPORTED; 1508 1509 /* 1510 * For each protocol in server preference order, 1511 * see if we support it. 1512 */ 1513 for (i = 0; i < server_len; ) { 1514 for (j = 0; j < client_len; ) { 1515 if (server[i] == client[j] && 1516 memcmp(&server[i + 1], 1517 &client[j + 1], server[i]) == 0) { 1518 /* We found a match */ 1519 result = &server[i]; 1520 status = OPENSSL_NPN_NEGOTIATED; 1521 goto found; 1522 } 1523 j += client[j]; 1524 j++; 1525 } 1526 i += server[i]; 1527 i++; 1528 } 1529 1530 /* There's no overlap between our protocols and the server's list. */ 1531 result = client; 1532 status = OPENSSL_NPN_NO_OVERLAP; 1533 1534 found: 1535 *out = (unsigned char *) result + 1; 1536 *outlen = result[0]; 1537 return (status); 1538 } 1539 1540 /* SSL_get0_next_proto_negotiated is deprecated. */ 1541 void 1542 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1543 unsigned int *len) 1544 { 1545 *data = NULL; 1546 *len = 0; 1547 } 1548 1549 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1550 void 1551 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1552 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1553 { 1554 } 1555 1556 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1557 void 1558 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1559 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1560 unsigned int inlen, void *arg), void *arg) 1561 { 1562 } 1563 1564 /* 1565 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1566 * protocols, which must be in wire-format (i.e. a series of non-empty, 1567 * 8-bit length-prefixed strings). Returns 0 on success. 1568 */ 1569 int 1570 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1571 unsigned int protos_len) 1572 { 1573 int failed = 1; 1574 1575 if (protos == NULL || protos_len == 0) 1576 goto err; 1577 1578 free(ctx->internal->alpn_client_proto_list); 1579 ctx->internal->alpn_client_proto_list = NULL; 1580 ctx->internal->alpn_client_proto_list_len = 0; 1581 1582 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1583 == NULL) 1584 goto err; 1585 ctx->internal->alpn_client_proto_list_len = protos_len; 1586 1587 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1588 1589 failed = 0; 1590 1591 err: 1592 /* NOTE: Return values are the reverse of what you expect. */ 1593 return (failed); 1594 } 1595 1596 /* 1597 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1598 * protocols, which must be in wire-format (i.e. a series of non-empty, 1599 * 8-bit length-prefixed strings). Returns 0 on success. 1600 */ 1601 int 1602 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1603 unsigned int protos_len) 1604 { 1605 int failed = 1; 1606 1607 if (protos == NULL || protos_len == 0) 1608 goto err; 1609 1610 free(ssl->internal->alpn_client_proto_list); 1611 ssl->internal->alpn_client_proto_list = NULL; 1612 ssl->internal->alpn_client_proto_list_len = 0; 1613 1614 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1615 == NULL) 1616 goto err; 1617 ssl->internal->alpn_client_proto_list_len = protos_len; 1618 1619 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1620 1621 failed = 0; 1622 1623 err: 1624 /* NOTE: Return values are the reverse of what you expect. */ 1625 return (failed); 1626 } 1627 1628 /* 1629 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1630 * ClientHello processing in order to select an ALPN protocol from the 1631 * client's list of offered protocols. 1632 */ 1633 void 1634 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1635 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1636 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1637 { 1638 ctx->internal->alpn_select_cb = cb; 1639 ctx->internal->alpn_select_cb_arg = arg; 1640 } 1641 1642 /* 1643 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1644 * it sets data to point to len bytes of protocol name (not including the 1645 * leading length-prefix byte). If the server didn't respond with* a negotiated 1646 * protocol then len will be zero. 1647 */ 1648 void 1649 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1650 unsigned int *len) 1651 { 1652 *data = NULL; 1653 *len = 0; 1654 1655 *data = ssl->s3->internal->alpn_selected; 1656 *len = ssl->s3->internal->alpn_selected_len; 1657 } 1658 1659 int 1660 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1661 const char *label, size_t llen, const unsigned char *p, size_t plen, 1662 int use_context) 1663 { 1664 return (tls1_export_keying_material(s, out, olen, 1665 label, llen, p, plen, use_context)); 1666 } 1667 1668 static unsigned long 1669 ssl_session_hash(const SSL_SESSION *a) 1670 { 1671 unsigned long l; 1672 1673 l = (unsigned long) 1674 ((unsigned int) a->session_id[0] )| 1675 ((unsigned int) a->session_id[1]<< 8L)| 1676 ((unsigned long)a->session_id[2]<<16L)| 1677 ((unsigned long)a->session_id[3]<<24L); 1678 return (l); 1679 } 1680 1681 /* 1682 * NB: If this function (or indeed the hash function which uses a sort of 1683 * coarser function than this one) is changed, ensure 1684 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1685 * able to construct an SSL_SESSION that will collide with any existing session 1686 * with a matching session ID. 1687 */ 1688 static int 1689 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1690 { 1691 if (a->ssl_version != b->ssl_version) 1692 return (1); 1693 if (a->session_id_length != b->session_id_length) 1694 return (1); 1695 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1696 return (1); 1697 return (0); 1698 } 1699 1700 /* 1701 * These wrapper functions should remain rather than redeclaring 1702 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1703 * variable. The reason is that the functions aren't static, they're exposed via 1704 * ssl.h. 1705 */ 1706 static unsigned long 1707 ssl_session_LHASH_HASH(const void *arg) 1708 { 1709 const SSL_SESSION *a = arg; 1710 1711 return ssl_session_hash(a); 1712 } 1713 1714 static int 1715 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1716 { 1717 const SSL_SESSION *a = arg1; 1718 const SSL_SESSION *b = arg2; 1719 1720 return ssl_session_cmp(a, b); 1721 } 1722 1723 SSL_CTX * 1724 SSL_CTX_new(const SSL_METHOD *meth) 1725 { 1726 SSL_CTX *ret; 1727 1728 if (!OPENSSL_init_ssl(0, NULL)) { 1729 SSLerrorx(SSL_R_LIBRARY_BUG); 1730 return (NULL); 1731 } 1732 1733 if (meth == NULL) { 1734 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1735 return (NULL); 1736 } 1737 1738 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1739 SSLerrorx(ERR_R_MALLOC_FAILURE); 1740 return (NULL); 1741 } 1742 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1743 free(ret); 1744 SSLerrorx(ERR_R_MALLOC_FAILURE); 1745 return (NULL); 1746 } 1747 1748 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1749 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1750 goto err; 1751 } 1752 1753 ret->method = meth; 1754 ret->internal->min_version = meth->internal->min_version; 1755 ret->internal->max_version = meth->internal->max_version; 1756 ret->internal->mode = SSL_MODE_AUTO_RETRY; 1757 1758 ret->cert_store = NULL; 1759 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1760 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1761 ret->internal->session_cache_head = NULL; 1762 ret->internal->session_cache_tail = NULL; 1763 1764 /* We take the system default */ 1765 ret->session_timeout = ssl_get_default_timeout(); 1766 1767 ret->internal->new_session_cb = 0; 1768 ret->internal->remove_session_cb = 0; 1769 ret->internal->get_session_cb = 0; 1770 ret->internal->generate_session_id = 0; 1771 1772 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1773 1774 ret->references = 1; 1775 ret->internal->quiet_shutdown = 0; 1776 1777 ret->internal->info_callback = NULL; 1778 1779 ret->internal->app_verify_callback = 0; 1780 ret->internal->app_verify_arg = NULL; 1781 1782 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1783 ret->internal->read_ahead = 0; 1784 ret->internal->msg_callback = 0; 1785 ret->internal->msg_callback_arg = NULL; 1786 ret->verify_mode = SSL_VERIFY_NONE; 1787 ret->sid_ctx_length = 0; 1788 ret->internal->default_verify_callback = NULL; 1789 1790 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1791 goto err; 1792 1793 ret->default_passwd_callback = 0; 1794 ret->default_passwd_callback_userdata = NULL; 1795 ret->internal->client_cert_cb = 0; 1796 ret->internal->app_gen_cookie_cb = 0; 1797 ret->internal->app_verify_cookie_cb = 0; 1798 1799 ret->internal->sessions = lh_SSL_SESSION_new(); 1800 if (ret->internal->sessions == NULL) 1801 goto err; 1802 ret->cert_store = X509_STORE_new(); 1803 if (ret->cert_store == NULL) 1804 goto err; 1805 1806 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1807 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1808 if (ret->cipher_list == NULL || 1809 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1810 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1811 goto err2; 1812 } 1813 1814 ret->param = X509_VERIFY_PARAM_new(); 1815 if (!ret->param) 1816 goto err; 1817 1818 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1819 goto err; 1820 1821 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1822 1823 ret->extra_certs = NULL; 1824 1825 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1826 1827 ret->internal->tlsext_servername_callback = 0; 1828 ret->internal->tlsext_servername_arg = NULL; 1829 1830 /* Setup RFC4507 ticket keys */ 1831 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1832 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1833 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1834 1835 ret->internal->tlsext_status_cb = 0; 1836 ret->internal->tlsext_status_arg = NULL; 1837 1838 #ifndef OPENSSL_NO_ENGINE 1839 ret->internal->client_cert_engine = NULL; 1840 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1841 #define eng_strx(x) #x 1842 #define eng_str(x) eng_strx(x) 1843 /* Use specific client engine automatically... ignore errors */ 1844 { 1845 ENGINE *eng; 1846 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1847 if (!eng) { 1848 ERR_clear_error(); 1849 ENGINE_load_builtin_engines(); 1850 eng = ENGINE_by_id(eng_str( 1851 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1852 } 1853 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1854 ERR_clear_error(); 1855 } 1856 #endif 1857 #endif 1858 /* 1859 * Default is to connect to non-RI servers. When RI is more widely 1860 * deployed might change this. 1861 */ 1862 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1863 1864 return (ret); 1865 err: 1866 SSLerrorx(ERR_R_MALLOC_FAILURE); 1867 err2: 1868 SSL_CTX_free(ret); 1869 return (NULL); 1870 } 1871 1872 void 1873 SSL_CTX_free(SSL_CTX *ctx) 1874 { 1875 int i; 1876 1877 if (ctx == NULL) 1878 return; 1879 1880 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1881 if (i > 0) 1882 return; 1883 1884 X509_VERIFY_PARAM_free(ctx->param); 1885 1886 /* 1887 * Free internal session cache. However: the remove_cb() may reference 1888 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1889 * after the sessions were flushed. 1890 * As the ex_data handling routines might also touch the session cache, 1891 * the most secure solution seems to be: empty (flush) the cache, then 1892 * free ex_data, then finally free the cache. 1893 * (See ticket [openssl.org #212].) 1894 */ 1895 if (ctx->internal->sessions != NULL) 1896 SSL_CTX_flush_sessions(ctx, 0); 1897 1898 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1899 1900 lh_SSL_SESSION_free(ctx->internal->sessions); 1901 1902 X509_STORE_free(ctx->cert_store); 1903 sk_SSL_CIPHER_free(ctx->cipher_list); 1904 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1905 ssl_cert_free(ctx->internal->cert); 1906 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1907 sk_X509_pop_free(ctx->extra_certs, X509_free); 1908 1909 #ifndef OPENSSL_NO_SRTP 1910 if (ctx->internal->srtp_profiles) 1911 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1912 #endif 1913 1914 #ifndef OPENSSL_NO_ENGINE 1915 ENGINE_finish(ctx->internal->client_cert_engine); 1916 #endif 1917 1918 free(ctx->internal->tlsext_ecpointformatlist); 1919 free(ctx->internal->tlsext_supportedgroups); 1920 1921 free(ctx->internal->alpn_client_proto_list); 1922 1923 free(ctx->internal); 1924 free(ctx); 1925 } 1926 1927 int 1928 SSL_CTX_up_ref(SSL_CTX *ctx) 1929 { 1930 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1931 return ((refs > 1) ? 1 : 0); 1932 } 1933 1934 pem_password_cb * 1935 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1936 { 1937 return (ctx->default_passwd_callback); 1938 } 1939 1940 void 1941 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1942 { 1943 ctx->default_passwd_callback = cb; 1944 } 1945 1946 void * 1947 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 1948 { 1949 return ctx->default_passwd_callback_userdata; 1950 } 1951 1952 void 1953 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1954 { 1955 ctx->default_passwd_callback_userdata = u; 1956 } 1957 1958 void 1959 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, 1960 int (*cb)(X509_STORE_CTX *, void *), void *arg) 1961 { 1962 ctx->internal->app_verify_callback = cb; 1963 ctx->internal->app_verify_arg = arg; 1964 } 1965 1966 void 1967 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1968 { 1969 ctx->verify_mode = mode; 1970 ctx->internal->default_verify_callback = cb; 1971 } 1972 1973 void 1974 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1975 { 1976 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1977 } 1978 1979 static int 1980 ssl_cert_can_sign(X509 *x) 1981 { 1982 /* This call populates extension flags (ex_flags). */ 1983 X509_check_purpose(x, -1, 0); 1984 1985 /* Key usage, if present, must allow signing. */ 1986 return ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 1987 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)); 1988 } 1989 1990 void 1991 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1992 { 1993 unsigned long mask_a, mask_k; 1994 CERT_PKEY *cpk; 1995 1996 if (c == NULL) 1997 return; 1998 1999 mask_a = SSL_aNULL | SSL_aTLS1_3; 2000 mask_k = SSL_kECDHE | SSL_kTLS1_3; 2001 2002 if (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto != 0) 2003 mask_k |= SSL_kDHE; 2004 2005 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2006 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2007 if (ssl_cert_can_sign(cpk->x509)) 2008 mask_a |= SSL_aECDSA; 2009 } 2010 2011 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2012 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2013 mask_k |= SSL_kGOST; 2014 mask_a |= SSL_aGOST01; 2015 } 2016 2017 cpk = &(c->pkeys[SSL_PKEY_RSA]); 2018 if (cpk->x509 != NULL && cpk->privatekey != NULL) { 2019 mask_a |= SSL_aRSA; 2020 mask_k |= SSL_kRSA; 2021 } 2022 2023 c->mask_k = mask_k; 2024 c->mask_a = mask_a; 2025 c->valid = 1; 2026 } 2027 2028 /* See if this handshake is using an ECC cipher suite. */ 2029 int 2030 ssl_using_ecc_cipher(SSL *s) 2031 { 2032 unsigned long alg_a, alg_k; 2033 2034 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2035 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2036 2037 return SSI(s)->tlsext_ecpointformatlist != NULL && 2038 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2039 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2040 } 2041 2042 int 2043 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2044 { 2045 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2046 unsigned long alg_a; 2047 2048 alg_a = cs->algorithm_auth; 2049 2050 if (alg_a & SSL_aECDSA) { 2051 /* This call populates extension flags (ex_flags). */ 2052 X509_check_purpose(x, -1, 0); 2053 2054 /* Key usage, if present, must allow signing. */ 2055 if ((x->ex_flags & EXFLAG_KUSAGE) && 2056 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2057 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2058 return (0); 2059 } 2060 } 2061 2062 return (1); 2063 } 2064 2065 CERT_PKEY * 2066 ssl_get_server_send_pkey(const SSL *s) 2067 { 2068 unsigned long alg_a; 2069 CERT *c; 2070 int i; 2071 2072 c = s->cert; 2073 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2074 2075 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2076 2077 if (alg_a & SSL_aECDSA) { 2078 i = SSL_PKEY_ECC; 2079 } else if (alg_a & SSL_aRSA) { 2080 i = SSL_PKEY_RSA; 2081 } else if (alg_a & SSL_aGOST01) { 2082 i = SSL_PKEY_GOST01; 2083 } else { /* if (alg_a & SSL_aNULL) */ 2084 SSLerror(s, ERR_R_INTERNAL_ERROR); 2085 return (NULL); 2086 } 2087 2088 return (c->pkeys + i); 2089 } 2090 2091 EVP_PKEY * 2092 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2093 const struct ssl_sigalg **sap) 2094 { 2095 const struct ssl_sigalg *sigalg = NULL; 2096 EVP_PKEY *pkey = NULL; 2097 unsigned long alg_a; 2098 CERT *c; 2099 int idx = -1; 2100 2101 alg_a = cipher->algorithm_auth; 2102 c = s->cert; 2103 2104 if (alg_a & SSL_aRSA) { 2105 idx = SSL_PKEY_RSA; 2106 } else if ((alg_a & SSL_aECDSA) && 2107 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2108 idx = SSL_PKEY_ECC; 2109 if (idx == -1) { 2110 SSLerror(s, ERR_R_INTERNAL_ERROR); 2111 return (NULL); 2112 } 2113 2114 pkey = c->pkeys[idx].privatekey; 2115 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2116 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2117 return (NULL); 2118 } 2119 *pmd = sigalg->md(); 2120 *sap = sigalg; 2121 2122 return (pkey); 2123 } 2124 2125 DH * 2126 ssl_get_auto_dh(SSL *s) 2127 { 2128 CERT_PKEY *cpk; 2129 int keylen; 2130 DH *dhp; 2131 2132 if (s->cert->dh_tmp_auto == 2) { 2133 keylen = 1024; 2134 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2135 keylen = 1024; 2136 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2137 keylen = 3072; 2138 } else { 2139 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2140 return (NULL); 2141 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2142 return (NULL); 2143 keylen = EVP_PKEY_bits(cpk->privatekey); 2144 } 2145 2146 if ((dhp = DH_new()) == NULL) 2147 return (NULL); 2148 2149 dhp->g = BN_new(); 2150 if (dhp->g != NULL) 2151 BN_set_word(dhp->g, 2); 2152 2153 if (keylen >= 8192) 2154 dhp->p = get_rfc3526_prime_8192(NULL); 2155 else if (keylen >= 4096) 2156 dhp->p = get_rfc3526_prime_4096(NULL); 2157 else if (keylen >= 3072) 2158 dhp->p = get_rfc3526_prime_3072(NULL); 2159 else if (keylen >= 2048) 2160 dhp->p = get_rfc3526_prime_2048(NULL); 2161 else if (keylen >= 1536) 2162 dhp->p = get_rfc3526_prime_1536(NULL); 2163 else 2164 dhp->p = get_rfc2409_prime_1024(NULL); 2165 2166 if (dhp->p == NULL || dhp->g == NULL) { 2167 DH_free(dhp); 2168 return (NULL); 2169 } 2170 return (dhp); 2171 } 2172 2173 void 2174 ssl_update_cache(SSL *s, int mode) 2175 { 2176 int i; 2177 2178 /* 2179 * If the session_id_length is 0, we are not supposed to cache it, 2180 * and it would be rather hard to do anyway :-) 2181 */ 2182 if (s->session->session_id_length == 0) 2183 return; 2184 2185 i = s->session_ctx->internal->session_cache_mode; 2186 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2187 || SSL_CTX_add_session(s->session_ctx, s->session)) 2188 && (s->session_ctx->internal->new_session_cb != NULL)) { 2189 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2190 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2191 SSL_SESSION_free(s->session); 2192 } 2193 2194 /* auto flush every 255 connections */ 2195 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2196 ((i & mode) == mode)) { 2197 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2198 s->session_ctx->internal->stats.sess_connect_good : 2199 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2200 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2201 } 2202 } 2203 } 2204 2205 const SSL_METHOD * 2206 SSL_get_ssl_method(SSL *s) 2207 { 2208 return (s->method); 2209 } 2210 2211 int 2212 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2213 { 2214 int conn = -1; 2215 int ret = 1; 2216 2217 if (s->method != meth) { 2218 if (s->internal->handshake_func != NULL) 2219 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2220 2221 if (s->method->internal->version == meth->internal->version) 2222 s->method = meth; 2223 else { 2224 s->method->internal->ssl_free(s); 2225 s->method = meth; 2226 ret = s->method->internal->ssl_new(s); 2227 } 2228 2229 if (conn == 1) 2230 s->internal->handshake_func = meth->internal->ssl_connect; 2231 else if (conn == 0) 2232 s->internal->handshake_func = meth->internal->ssl_accept; 2233 } 2234 return (ret); 2235 } 2236 2237 int 2238 SSL_get_error(const SSL *s, int i) 2239 { 2240 int reason; 2241 unsigned long l; 2242 BIO *bio; 2243 2244 if (i > 0) 2245 return (SSL_ERROR_NONE); 2246 2247 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2248 * etc, where we do encode the error */ 2249 if ((l = ERR_peek_error()) != 0) { 2250 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2251 return (SSL_ERROR_SYSCALL); 2252 else 2253 return (SSL_ERROR_SSL); 2254 } 2255 2256 if ((i < 0) && SSL_want_read(s)) { 2257 bio = SSL_get_rbio(s); 2258 if (BIO_should_read(bio)) { 2259 return (SSL_ERROR_WANT_READ); 2260 } else if (BIO_should_write(bio)) { 2261 /* 2262 * This one doesn't make too much sense... We never 2263 * try to write to the rbio, and an application 2264 * program where rbio and wbio are separate couldn't 2265 * even know what it should wait for. However if we 2266 * ever set s->internal->rwstate incorrectly (so that we have 2267 * SSL_want_read(s) instead of SSL_want_write(s)) 2268 * and rbio and wbio *are* the same, this test works 2269 * around that bug; so it might be safer to keep it. 2270 */ 2271 return (SSL_ERROR_WANT_WRITE); 2272 } else if (BIO_should_io_special(bio)) { 2273 reason = BIO_get_retry_reason(bio); 2274 if (reason == BIO_RR_CONNECT) 2275 return (SSL_ERROR_WANT_CONNECT); 2276 else if (reason == BIO_RR_ACCEPT) 2277 return (SSL_ERROR_WANT_ACCEPT); 2278 else 2279 return (SSL_ERROR_SYSCALL); /* unknown */ 2280 } 2281 } 2282 2283 if ((i < 0) && SSL_want_write(s)) { 2284 bio = SSL_get_wbio(s); 2285 if (BIO_should_write(bio)) { 2286 return (SSL_ERROR_WANT_WRITE); 2287 } else if (BIO_should_read(bio)) { 2288 /* 2289 * See above (SSL_want_read(s) with 2290 * BIO_should_write(bio)) 2291 */ 2292 return (SSL_ERROR_WANT_READ); 2293 } else if (BIO_should_io_special(bio)) { 2294 reason = BIO_get_retry_reason(bio); 2295 if (reason == BIO_RR_CONNECT) 2296 return (SSL_ERROR_WANT_CONNECT); 2297 else if (reason == BIO_RR_ACCEPT) 2298 return (SSL_ERROR_WANT_ACCEPT); 2299 else 2300 return (SSL_ERROR_SYSCALL); 2301 } 2302 } 2303 if ((i < 0) && SSL_want_x509_lookup(s)) { 2304 return (SSL_ERROR_WANT_X509_LOOKUP); 2305 } 2306 2307 if (i == 0) { 2308 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2309 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2310 return (SSL_ERROR_ZERO_RETURN); 2311 } 2312 return (SSL_ERROR_SYSCALL); 2313 } 2314 2315 int 2316 SSL_do_handshake(SSL *s) 2317 { 2318 int ret = 1; 2319 2320 if (s->internal->handshake_func == NULL) { 2321 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2322 return (-1); 2323 } 2324 2325 s->method->internal->ssl_renegotiate_check(s); 2326 2327 if (SSL_in_init(s) || SSL_in_before(s)) { 2328 ret = s->internal->handshake_func(s); 2329 } 2330 return (ret); 2331 } 2332 2333 /* 2334 * For the next 2 functions, SSL_clear() sets shutdown and so 2335 * one of these calls will reset it 2336 */ 2337 void 2338 SSL_set_accept_state(SSL *s) 2339 { 2340 s->server = 1; 2341 s->internal->shutdown = 0; 2342 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2343 s->internal->handshake_func = s->method->internal->ssl_accept; 2344 ssl_clear_cipher_state(s); 2345 } 2346 2347 void 2348 SSL_set_connect_state(SSL *s) 2349 { 2350 s->server = 0; 2351 s->internal->shutdown = 0; 2352 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2353 s->internal->handshake_func = s->method->internal->ssl_connect; 2354 ssl_clear_cipher_state(s); 2355 } 2356 2357 int 2358 ssl_undefined_function(SSL *s) 2359 { 2360 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2361 return (0); 2362 } 2363 2364 int 2365 ssl_undefined_void_function(void) 2366 { 2367 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2368 return (0); 2369 } 2370 2371 int 2372 ssl_undefined_const_function(const SSL *s) 2373 { 2374 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2375 return (0); 2376 } 2377 2378 const char * 2379 ssl_version_string(int ver) 2380 { 2381 switch (ver) { 2382 case DTLS1_VERSION: 2383 return (SSL_TXT_DTLS1); 2384 case TLS1_VERSION: 2385 return (SSL_TXT_TLSV1); 2386 case TLS1_1_VERSION: 2387 return (SSL_TXT_TLSV1_1); 2388 case TLS1_2_VERSION: 2389 return (SSL_TXT_TLSV1_2); 2390 case TLS1_3_VERSION: 2391 return (SSL_TXT_TLSV1_3); 2392 default: 2393 return ("unknown"); 2394 } 2395 } 2396 2397 const char * 2398 SSL_get_version(const SSL *s) 2399 { 2400 return ssl_version_string(s->version); 2401 } 2402 2403 SSL * 2404 SSL_dup(SSL *s) 2405 { 2406 STACK_OF(X509_NAME) *sk; 2407 X509_NAME *xn; 2408 SSL *ret; 2409 int i; 2410 2411 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2412 goto err; 2413 2414 ret->version = s->version; 2415 ret->internal->type = s->internal->type; 2416 ret->method = s->method; 2417 2418 if (s->session != NULL) { 2419 if (!SSL_copy_session_id(ret, s)) 2420 goto err; 2421 } else { 2422 /* 2423 * No session has been established yet, so we have to expect 2424 * that s->cert or ret->cert will be changed later -- 2425 * they should not both point to the same object, 2426 * and thus we can't use SSL_copy_session_id. 2427 */ 2428 2429 ret->method->internal->ssl_free(ret); 2430 ret->method = s->method; 2431 ret->method->internal->ssl_new(ret); 2432 2433 ssl_cert_free(ret->cert); 2434 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2435 goto err; 2436 2437 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2438 s->sid_ctx_length)) 2439 goto err; 2440 } 2441 2442 ret->internal->options = s->internal->options; 2443 ret->internal->mode = s->internal->mode; 2444 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2445 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2446 ret->internal->msg_callback = s->internal->msg_callback; 2447 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2448 SSL_set_verify(ret, SSL_get_verify_mode(s), 2449 SSL_get_verify_callback(s)); 2450 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2451 ret->internal->generate_session_id = s->internal->generate_session_id; 2452 2453 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2454 2455 ret->internal->debug = s->internal->debug; 2456 2457 /* copy app data, a little dangerous perhaps */ 2458 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2459 &ret->internal->ex_data, &s->internal->ex_data)) 2460 goto err; 2461 2462 /* setup rbio, and wbio */ 2463 if (s->rbio != NULL) { 2464 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2465 goto err; 2466 } 2467 if (s->wbio != NULL) { 2468 if (s->wbio != s->rbio) { 2469 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2470 goto err; 2471 } else 2472 ret->wbio = ret->rbio; 2473 } 2474 ret->internal->rwstate = s->internal->rwstate; 2475 ret->internal->in_handshake = s->internal->in_handshake; 2476 ret->internal->handshake_func = s->internal->handshake_func; 2477 ret->server = s->server; 2478 ret->internal->renegotiate = s->internal->renegotiate; 2479 ret->internal->new_session = s->internal->new_session; 2480 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2481 ret->internal->shutdown = s->internal->shutdown; 2482 /* SSL_dup does not really work at any state, though */ 2483 S3I(ret)->hs.state = S3I(s)->hs.state; 2484 ret->internal->rstate = s->internal->rstate; 2485 2486 /* 2487 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2488 * ret->init_off 2489 */ 2490 ret->internal->init_num = 0; 2491 2492 ret->internal->hit = s->internal->hit; 2493 2494 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2495 2496 /* dup the cipher_list and cipher_list_by_id stacks */ 2497 if (s->cipher_list != NULL) { 2498 if ((ret->cipher_list = 2499 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2500 goto err; 2501 } 2502 if (s->internal->cipher_list_by_id != NULL) { 2503 if ((ret->internal->cipher_list_by_id = 2504 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2505 goto err; 2506 } 2507 2508 /* Dup the client_CA list */ 2509 if (s->internal->client_CA != NULL) { 2510 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2511 ret->internal->client_CA = sk; 2512 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2513 xn = sk_X509_NAME_value(sk, i); 2514 if (sk_X509_NAME_set(sk, i, 2515 X509_NAME_dup(xn)) == NULL) { 2516 X509_NAME_free(xn); 2517 goto err; 2518 } 2519 } 2520 } 2521 2522 return ret; 2523 err: 2524 SSL_free(ret); 2525 return NULL; 2526 } 2527 2528 void 2529 ssl_clear_cipher_state(SSL *s) 2530 { 2531 ssl_clear_cipher_read_state(s); 2532 ssl_clear_cipher_write_state(s); 2533 } 2534 2535 void 2536 ssl_clear_cipher_read_state(SSL *s) 2537 { 2538 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2539 s->enc_read_ctx = NULL; 2540 EVP_MD_CTX_free(s->read_hash); 2541 s->read_hash = NULL; 2542 2543 if (s->internal->aead_read_ctx != NULL) { 2544 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2545 free(s->internal->aead_read_ctx); 2546 s->internal->aead_read_ctx = NULL; 2547 } 2548 } 2549 2550 void 2551 ssl_clear_cipher_write_state(SSL *s) 2552 { 2553 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2554 s->internal->enc_write_ctx = NULL; 2555 EVP_MD_CTX_free(s->internal->write_hash); 2556 s->internal->write_hash = NULL; 2557 2558 if (s->internal->aead_write_ctx != NULL) { 2559 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2560 free(s->internal->aead_write_ctx); 2561 s->internal->aead_write_ctx = NULL; 2562 } 2563 } 2564 2565 /* Fix this function so that it takes an optional type parameter */ 2566 X509 * 2567 SSL_get_certificate(const SSL *s) 2568 { 2569 return (s->cert->key->x509); 2570 } 2571 2572 /* Fix this function so that it takes an optional type parameter */ 2573 EVP_PKEY * 2574 SSL_get_privatekey(const SSL *s) 2575 { 2576 return (s->cert->key->privatekey); 2577 } 2578 2579 const SSL_CIPHER * 2580 SSL_get_current_cipher(const SSL *s) 2581 { 2582 if ((s->session != NULL) && (s->session->cipher != NULL)) 2583 return (s->session->cipher); 2584 return (NULL); 2585 } 2586 const void * 2587 SSL_get_current_compression(SSL *s) 2588 { 2589 return (NULL); 2590 } 2591 2592 const void * 2593 SSL_get_current_expansion(SSL *s) 2594 { 2595 return (NULL); 2596 } 2597 2598 size_t 2599 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2600 { 2601 size_t len = sizeof(s->s3->client_random); 2602 2603 if (out == NULL) 2604 return len; 2605 2606 if (len > max_out) 2607 len = max_out; 2608 2609 memcpy(out, s->s3->client_random, len); 2610 2611 return len; 2612 } 2613 2614 size_t 2615 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2616 { 2617 size_t len = sizeof(s->s3->server_random); 2618 2619 if (out == NULL) 2620 return len; 2621 2622 if (len > max_out) 2623 len = max_out; 2624 2625 memcpy(out, s->s3->server_random, len); 2626 2627 return len; 2628 } 2629 2630 int 2631 ssl_init_wbio_buffer(SSL *s, int push) 2632 { 2633 BIO *bbio; 2634 2635 if (s->bbio == NULL) { 2636 bbio = BIO_new(BIO_f_buffer()); 2637 if (bbio == NULL) 2638 return (0); 2639 s->bbio = bbio; 2640 } else { 2641 bbio = s->bbio; 2642 if (s->bbio == s->wbio) 2643 s->wbio = BIO_pop(s->wbio); 2644 } 2645 (void)BIO_reset(bbio); 2646 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2647 if (!BIO_set_read_buffer_size(bbio, 1)) { 2648 SSLerror(s, ERR_R_BUF_LIB); 2649 return (0); 2650 } 2651 if (push) { 2652 if (s->wbio != bbio) 2653 s->wbio = BIO_push(bbio, s->wbio); 2654 } else { 2655 if (s->wbio == bbio) 2656 s->wbio = BIO_pop(bbio); 2657 } 2658 return (1); 2659 } 2660 2661 void 2662 ssl_free_wbio_buffer(SSL *s) 2663 { 2664 if (s == NULL) 2665 return; 2666 2667 if (s->bbio == NULL) 2668 return; 2669 2670 if (s->bbio == s->wbio) { 2671 /* remove buffering */ 2672 s->wbio = BIO_pop(s->wbio); 2673 } 2674 BIO_free(s->bbio); 2675 s->bbio = NULL; 2676 } 2677 2678 void 2679 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2680 { 2681 ctx->internal->quiet_shutdown = mode; 2682 } 2683 2684 int 2685 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2686 { 2687 return (ctx->internal->quiet_shutdown); 2688 } 2689 2690 void 2691 SSL_set_quiet_shutdown(SSL *s, int mode) 2692 { 2693 s->internal->quiet_shutdown = mode; 2694 } 2695 2696 int 2697 SSL_get_quiet_shutdown(const SSL *s) 2698 { 2699 return (s->internal->quiet_shutdown); 2700 } 2701 2702 void 2703 SSL_set_shutdown(SSL *s, int mode) 2704 { 2705 s->internal->shutdown = mode; 2706 } 2707 2708 int 2709 SSL_get_shutdown(const SSL *s) 2710 { 2711 return (s->internal->shutdown); 2712 } 2713 2714 int 2715 SSL_version(const SSL *s) 2716 { 2717 return (s->version); 2718 } 2719 2720 SSL_CTX * 2721 SSL_get_SSL_CTX(const SSL *ssl) 2722 { 2723 return (ssl->ctx); 2724 } 2725 2726 SSL_CTX * 2727 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2728 { 2729 if (ssl->ctx == ctx) 2730 return (ssl->ctx); 2731 if (ctx == NULL) 2732 ctx = ssl->initial_ctx; 2733 2734 ssl_cert_free(ssl->cert); 2735 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2736 2737 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2738 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2739 ssl->ctx = ctx; 2740 return (ssl->ctx); 2741 } 2742 2743 int 2744 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2745 { 2746 return (X509_STORE_set_default_paths(ctx->cert_store)); 2747 } 2748 2749 int 2750 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2751 const char *CApath) 2752 { 2753 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2754 } 2755 2756 int 2757 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2758 { 2759 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2760 } 2761 2762 void 2763 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2764 { 2765 ssl->internal->info_callback = cb; 2766 } 2767 2768 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2769 { 2770 return (ssl->internal->info_callback); 2771 } 2772 2773 int 2774 SSL_state(const SSL *ssl) 2775 { 2776 return (S3I(ssl)->hs.state); 2777 } 2778 2779 void 2780 SSL_set_state(SSL *ssl, int state) 2781 { 2782 S3I(ssl)->hs.state = state; 2783 } 2784 2785 void 2786 SSL_set_verify_result(SSL *ssl, long arg) 2787 { 2788 ssl->verify_result = arg; 2789 } 2790 2791 long 2792 SSL_get_verify_result(const SSL *ssl) 2793 { 2794 return (ssl->verify_result); 2795 } 2796 2797 int 2798 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2799 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2800 { 2801 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2802 new_func, dup_func, free_func)); 2803 } 2804 2805 int 2806 SSL_set_ex_data(SSL *s, int idx, void *arg) 2807 { 2808 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2809 } 2810 2811 void * 2812 SSL_get_ex_data(const SSL *s, int idx) 2813 { 2814 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2815 } 2816 2817 int 2818 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2819 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2820 { 2821 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2822 new_func, dup_func, free_func)); 2823 } 2824 2825 int 2826 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2827 { 2828 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2829 } 2830 2831 void * 2832 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2833 { 2834 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2835 } 2836 2837 int 2838 ssl_ok(SSL *s) 2839 { 2840 return (1); 2841 } 2842 2843 X509_STORE * 2844 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2845 { 2846 return (ctx->cert_store); 2847 } 2848 2849 void 2850 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2851 { 2852 X509_STORE_free(ctx->cert_store); 2853 ctx->cert_store = store; 2854 } 2855 2856 X509 * 2857 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2858 { 2859 if (ctx->internal->cert == NULL) 2860 return NULL; 2861 2862 return ctx->internal->cert->key->x509; 2863 } 2864 2865 int 2866 SSL_want(const SSL *s) 2867 { 2868 return (s->internal->rwstate); 2869 } 2870 2871 void 2872 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2873 int keylength)) 2874 { 2875 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2876 } 2877 2878 void 2879 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2880 int keylength)) 2881 { 2882 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2883 } 2884 2885 void 2886 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2887 int keylength)) 2888 { 2889 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2890 } 2891 2892 void 2893 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2894 int keylength)) 2895 { 2896 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2897 } 2898 2899 void 2900 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2901 int is_export, int keylength)) 2902 { 2903 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2904 (void (*)(void))ecdh); 2905 } 2906 2907 void 2908 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2909 int keylength)) 2910 { 2911 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2912 } 2913 2914 2915 void 2916 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2917 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2918 { 2919 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2920 (void (*)(void))cb); 2921 } 2922 2923 void 2924 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2925 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2926 { 2927 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2928 } 2929 2930 void 2931 SSL_set_debug(SSL *s, int debug) 2932 { 2933 s->internal->debug = debug; 2934 } 2935 2936 int 2937 SSL_cache_hit(SSL *s) 2938 { 2939 return (s->internal->hit); 2940 } 2941 2942 int 2943 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 2944 { 2945 return ctx->internal->min_version; 2946 } 2947 2948 int 2949 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2950 { 2951 return ssl_version_set_min(ctx->method, version, 2952 ctx->internal->max_version, &ctx->internal->min_version); 2953 } 2954 2955 int 2956 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 2957 { 2958 return ctx->internal->max_version; 2959 } 2960 2961 int 2962 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2963 { 2964 return ssl_version_set_max(ctx->method, version, 2965 ctx->internal->min_version, &ctx->internal->max_version); 2966 } 2967 2968 int 2969 SSL_get_min_proto_version(SSL *ssl) 2970 { 2971 return ssl->internal->min_version; 2972 } 2973 2974 int 2975 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2976 { 2977 return ssl_version_set_min(ssl->method, version, 2978 ssl->internal->max_version, &ssl->internal->min_version); 2979 } 2980 int 2981 SSL_get_max_proto_version(SSL *ssl) 2982 { 2983 return ssl->internal->max_version; 2984 } 2985 2986 int 2987 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2988 { 2989 return ssl_version_set_max(ssl->method, version, 2990 ssl->internal->min_version, &ssl->internal->max_version); 2991 } 2992 2993 static int 2994 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 2995 { 2996 SSL_CIPHER const *a = a_; 2997 SSL_CIPHER const *b = b_; 2998 return ssl_cipher_id_cmp(a, b); 2999 } 3000 3001 SSL_CIPHER * 3002 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3003 { 3004 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3005 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3006 } 3007