1 /* $OpenBSD: ssl_lib.c,v 1.204 2019/03/25 17:33:26 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <stdio.h> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #include "bytestring.h" 159 #include "ssl_sigalgs.h" 160 161 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 162 163 int 164 SSL_clear(SSL *s) 165 { 166 if (s->method == NULL) { 167 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 168 return (0); 169 } 170 171 if (ssl_clear_bad_session(s)) { 172 SSL_SESSION_free(s->session); 173 s->session = NULL; 174 } 175 176 s->error = 0; 177 s->internal->hit = 0; 178 s->internal->shutdown = 0; 179 180 if (s->internal->renegotiate) { 181 SSLerror(s, ERR_R_INTERNAL_ERROR); 182 return (0); 183 } 184 185 s->internal->type = 0; 186 187 s->version = s->method->internal->version; 188 s->client_version = s->version; 189 s->internal->rwstate = SSL_NOTHING; 190 s->internal->rstate = SSL_ST_READ_HEADER; 191 192 BUF_MEM_free(s->internal->init_buf); 193 s->internal->init_buf = NULL; 194 195 ssl_clear_cipher_state(s); 196 197 s->internal->first_packet = 0; 198 199 /* 200 * Check to see if we were changed into a different method, if 201 * so, revert back if we are not doing session-id reuse. 202 */ 203 if (!s->internal->in_handshake && (s->session == NULL) && 204 (s->method != s->ctx->method)) { 205 s->method->internal->ssl_free(s); 206 s->method = s->ctx->method; 207 if (!s->method->internal->ssl_new(s)) 208 return (0); 209 } else 210 s->method->internal->ssl_clear(s); 211 212 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 213 214 return (1); 215 } 216 217 /* Used to change an SSL_CTXs default SSL method type */ 218 int 219 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 220 { 221 STACK_OF(SSL_CIPHER) *sk; 222 223 ctx->method = meth; 224 225 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 226 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 227 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 228 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 229 return (0); 230 } 231 return (1); 232 } 233 234 SSL * 235 SSL_new(SSL_CTX *ctx) 236 { 237 SSL *s; 238 239 if (ctx == NULL) { 240 SSLerrorx(SSL_R_NULL_SSL_CTX); 241 return (NULL); 242 } 243 if (ctx->method == NULL) { 244 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 245 return (NULL); 246 } 247 248 if ((s = calloc(1, sizeof(*s))) == NULL) { 249 SSLerrorx(ERR_R_MALLOC_FAILURE); 250 return (NULL); 251 } 252 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 253 free(s); 254 SSLerrorx(ERR_R_MALLOC_FAILURE); 255 return (NULL); 256 } 257 258 s->internal->min_version = ctx->internal->min_version; 259 s->internal->max_version = ctx->internal->max_version; 260 261 s->internal->options = ctx->internal->options; 262 s->internal->mode = ctx->internal->mode; 263 s->internal->max_cert_list = ctx->internal->max_cert_list; 264 265 if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL) 266 goto err; 267 268 s->internal->read_ahead = ctx->internal->read_ahead; 269 s->internal->msg_callback = ctx->internal->msg_callback; 270 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 271 s->verify_mode = ctx->verify_mode; 272 s->sid_ctx_length = ctx->sid_ctx_length; 273 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 274 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 275 s->internal->verify_callback = ctx->internal->default_verify_callback; 276 s->internal->generate_session_id = ctx->internal->generate_session_id; 277 278 s->param = X509_VERIFY_PARAM_new(); 279 if (!s->param) 280 goto err; 281 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 282 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 283 s->max_send_fragment = ctx->internal->max_send_fragment; 284 285 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 286 s->ctx = ctx; 287 s->internal->tlsext_debug_cb = 0; 288 s->internal->tlsext_debug_arg = NULL; 289 s->internal->tlsext_ticket_expected = 0; 290 s->tlsext_status_type = -1; 291 s->internal->tlsext_status_expected = 0; 292 s->internal->tlsext_ocsp_ids = NULL; 293 s->internal->tlsext_ocsp_exts = NULL; 294 s->internal->tlsext_ocsp_resp = NULL; 295 s->internal->tlsext_ocsp_resplen = -1; 296 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 297 s->initial_ctx = ctx; 298 299 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 300 s->internal->tlsext_ecpointformatlist = 301 calloc(ctx->internal->tlsext_ecpointformatlist_length, 302 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 303 if (s->internal->tlsext_ecpointformatlist == NULL) 304 goto err; 305 memcpy(s->internal->tlsext_ecpointformatlist, 306 ctx->internal->tlsext_ecpointformatlist, 307 ctx->internal->tlsext_ecpointformatlist_length * 308 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 309 s->internal->tlsext_ecpointformatlist_length = 310 ctx->internal->tlsext_ecpointformatlist_length; 311 } 312 if (ctx->internal->tlsext_supportedgroups != NULL) { 313 s->internal->tlsext_supportedgroups = 314 calloc(ctx->internal->tlsext_supportedgroups_length, 315 sizeof(ctx->internal->tlsext_supportedgroups[0])); 316 if (s->internal->tlsext_supportedgroups == NULL) 317 goto err; 318 memcpy(s->internal->tlsext_supportedgroups, 319 ctx->internal->tlsext_supportedgroups, 320 ctx->internal->tlsext_supportedgroups_length * 321 sizeof(ctx->internal->tlsext_supportedgroups[0])); 322 s->internal->tlsext_supportedgroups_length = 323 ctx->internal->tlsext_supportedgroups_length; 324 } 325 326 if (s->ctx->internal->alpn_client_proto_list != NULL) { 327 s->internal->alpn_client_proto_list = 328 malloc(s->ctx->internal->alpn_client_proto_list_len); 329 if (s->internal->alpn_client_proto_list == NULL) 330 goto err; 331 memcpy(s->internal->alpn_client_proto_list, 332 s->ctx->internal->alpn_client_proto_list, 333 s->ctx->internal->alpn_client_proto_list_len); 334 s->internal->alpn_client_proto_list_len = 335 s->ctx->internal->alpn_client_proto_list_len; 336 } 337 338 s->verify_result = X509_V_OK; 339 340 s->method = ctx->method; 341 342 if (!s->method->internal->ssl_new(s)) 343 goto err; 344 345 s->references = 1; 346 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 347 348 SSL_clear(s); 349 350 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 351 352 return (s); 353 354 err: 355 SSL_free(s); 356 SSLerrorx(ERR_R_MALLOC_FAILURE); 357 return (NULL); 358 } 359 360 int 361 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 362 unsigned int sid_ctx_len) 363 { 364 if (sid_ctx_len > sizeof ctx->sid_ctx) { 365 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 366 return (0); 367 } 368 ctx->sid_ctx_length = sid_ctx_len; 369 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 370 371 return (1); 372 } 373 374 int 375 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 376 unsigned int sid_ctx_len) 377 { 378 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 379 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 380 return (0); 381 } 382 ssl->sid_ctx_length = sid_ctx_len; 383 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 384 385 return (1); 386 } 387 388 int 389 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 390 { 391 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 392 ctx->internal->generate_session_id = cb; 393 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 394 return (1); 395 } 396 397 int 398 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 399 { 400 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 401 ssl->internal->generate_session_id = cb; 402 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 403 return (1); 404 } 405 406 int 407 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 408 unsigned int id_len) 409 { 410 /* 411 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 412 * shows how we can "construct" a session to give us the desired 413 * check - ie. to find if there's a session in the hash table 414 * that would conflict with any new session built out of this 415 * id/id_len and the ssl_version in use by this SSL. 416 */ 417 SSL_SESSION r, *p; 418 419 if (id_len > sizeof r.session_id) 420 return (0); 421 422 r.ssl_version = ssl->version; 423 r.session_id_length = id_len; 424 memcpy(r.session_id, id, id_len); 425 426 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 427 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 428 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 429 return (p != NULL); 430 } 431 432 int 433 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 434 { 435 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 436 } 437 438 int 439 SSL_set_purpose(SSL *s, int purpose) 440 { 441 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 442 } 443 444 int 445 SSL_CTX_set_trust(SSL_CTX *s, int trust) 446 { 447 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 448 } 449 450 int 451 SSL_set_trust(SSL *s, int trust) 452 { 453 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 454 } 455 456 int 457 SSL_set1_host(SSL *s, const char *hostname) 458 { 459 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0); 460 } 461 462 X509_VERIFY_PARAM * 463 SSL_CTX_get0_param(SSL_CTX *ctx) 464 { 465 return (ctx->param); 466 } 467 468 int 469 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 470 { 471 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 472 } 473 474 X509_VERIFY_PARAM * 475 SSL_get0_param(SSL *ssl) 476 { 477 return (ssl->param); 478 } 479 480 int 481 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 482 { 483 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 484 } 485 486 void 487 SSL_free(SSL *s) 488 { 489 int i; 490 491 if (s == NULL) 492 return; 493 494 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 495 if (i > 0) 496 return; 497 498 X509_VERIFY_PARAM_free(s->param); 499 500 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 501 502 if (s->bbio != NULL) { 503 /* If the buffering BIO is in place, pop it off */ 504 if (s->bbio == s->wbio) { 505 s->wbio = BIO_pop(s->wbio); 506 } 507 BIO_free(s->bbio); 508 s->bbio = NULL; 509 } 510 511 if (s->rbio != s->wbio) 512 BIO_free_all(s->rbio); 513 BIO_free_all(s->wbio); 514 515 BUF_MEM_free(s->internal->init_buf); 516 517 /* add extra stuff */ 518 sk_SSL_CIPHER_free(s->cipher_list); 519 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 520 521 /* Make the next call work :-) */ 522 if (s->session != NULL) { 523 ssl_clear_bad_session(s); 524 SSL_SESSION_free(s->session); 525 } 526 527 ssl_clear_cipher_state(s); 528 529 ssl_cert_free(s->cert); 530 531 free(s->tlsext_hostname); 532 SSL_CTX_free(s->initial_ctx); 533 534 free(s->internal->tlsext_ecpointformatlist); 535 free(s->internal->tlsext_supportedgroups); 536 537 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 538 X509_EXTENSION_free); 539 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 540 free(s->internal->tlsext_ocsp_resp); 541 542 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 543 544 if (s->method != NULL) 545 s->method->internal->ssl_free(s); 546 547 SSL_CTX_free(s->ctx); 548 549 free(s->internal->alpn_client_proto_list); 550 551 #ifndef OPENSSL_NO_SRTP 552 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 553 #endif 554 555 free(s->internal); 556 free(s); 557 } 558 559 int 560 SSL_up_ref(SSL *s) 561 { 562 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 563 return (refs > 1) ? 1 : 0; 564 } 565 566 void 567 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 568 { 569 /* If the output buffering BIO is still in place, remove it */ 570 if (s->bbio != NULL) { 571 if (s->wbio == s->bbio) { 572 s->wbio = s->wbio->next_bio; 573 s->bbio->next_bio = NULL; 574 } 575 } 576 577 if (s->rbio != rbio && s->rbio != s->wbio) 578 BIO_free_all(s->rbio); 579 if (s->wbio != wbio) 580 BIO_free_all(s->wbio); 581 s->rbio = rbio; 582 s->wbio = wbio; 583 } 584 585 BIO * 586 SSL_get_rbio(const SSL *s) 587 { 588 return (s->rbio); 589 } 590 591 BIO * 592 SSL_get_wbio(const SSL *s) 593 { 594 return (s->wbio); 595 } 596 597 int 598 SSL_get_fd(const SSL *s) 599 { 600 return (SSL_get_rfd(s)); 601 } 602 603 int 604 SSL_get_rfd(const SSL *s) 605 { 606 int ret = -1; 607 BIO *b, *r; 608 609 b = SSL_get_rbio(s); 610 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 611 if (r != NULL) 612 BIO_get_fd(r, &ret); 613 return (ret); 614 } 615 616 int 617 SSL_get_wfd(const SSL *s) 618 { 619 int ret = -1; 620 BIO *b, *r; 621 622 b = SSL_get_wbio(s); 623 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 624 if (r != NULL) 625 BIO_get_fd(r, &ret); 626 return (ret); 627 } 628 629 int 630 SSL_set_fd(SSL *s, int fd) 631 { 632 int ret = 0; 633 BIO *bio = NULL; 634 635 bio = BIO_new(BIO_s_socket()); 636 637 if (bio == NULL) { 638 SSLerror(s, ERR_R_BUF_LIB); 639 goto err; 640 } 641 BIO_set_fd(bio, fd, BIO_NOCLOSE); 642 SSL_set_bio(s, bio, bio); 643 ret = 1; 644 err: 645 return (ret); 646 } 647 648 int 649 SSL_set_wfd(SSL *s, int fd) 650 { 651 int ret = 0; 652 BIO *bio = NULL; 653 654 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 655 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 656 bio = BIO_new(BIO_s_socket()); 657 658 if (bio == NULL) { 659 SSLerror(s, ERR_R_BUF_LIB); 660 goto err; 661 } 662 BIO_set_fd(bio, fd, BIO_NOCLOSE); 663 SSL_set_bio(s, SSL_get_rbio(s), bio); 664 } else 665 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 666 ret = 1; 667 err: 668 return (ret); 669 } 670 671 int 672 SSL_set_rfd(SSL *s, int fd) 673 { 674 int ret = 0; 675 BIO *bio = NULL; 676 677 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 678 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 679 bio = BIO_new(BIO_s_socket()); 680 681 if (bio == NULL) { 682 SSLerror(s, ERR_R_BUF_LIB); 683 goto err; 684 } 685 BIO_set_fd(bio, fd, BIO_NOCLOSE); 686 SSL_set_bio(s, bio, SSL_get_wbio(s)); 687 } else 688 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 689 ret = 1; 690 err: 691 return (ret); 692 } 693 694 695 /* return length of latest Finished message we sent, copy to 'buf' */ 696 size_t 697 SSL_get_finished(const SSL *s, void *buf, size_t count) 698 { 699 size_t ret = 0; 700 701 if (s->s3 != NULL) { 702 ret = S3I(s)->tmp.finish_md_len; 703 if (count > ret) 704 count = ret; 705 memcpy(buf, S3I(s)->tmp.finish_md, count); 706 } 707 return (ret); 708 } 709 710 /* return length of latest Finished message we expected, copy to 'buf' */ 711 size_t 712 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 713 { 714 size_t ret = 0; 715 716 if (s->s3 != NULL) { 717 ret = S3I(s)->tmp.peer_finish_md_len; 718 if (count > ret) 719 count = ret; 720 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 721 } 722 return (ret); 723 } 724 725 726 int 727 SSL_get_verify_mode(const SSL *s) 728 { 729 return (s->verify_mode); 730 } 731 732 int 733 SSL_get_verify_depth(const SSL *s) 734 { 735 return (X509_VERIFY_PARAM_get_depth(s->param)); 736 } 737 738 int 739 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 740 { 741 return (s->internal->verify_callback); 742 } 743 744 int 745 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 746 { 747 return (ctx->verify_mode); 748 } 749 750 int 751 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 752 { 753 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 754 } 755 756 int 757 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 758 { 759 return (ctx->internal->default_verify_callback); 760 } 761 762 void 763 SSL_set_verify(SSL *s, int mode, 764 int (*callback)(int ok, X509_STORE_CTX *ctx)) 765 { 766 s->verify_mode = mode; 767 if (callback != NULL) 768 s->internal->verify_callback = callback; 769 } 770 771 void 772 SSL_set_verify_depth(SSL *s, int depth) 773 { 774 X509_VERIFY_PARAM_set_depth(s->param, depth); 775 } 776 777 void 778 SSL_set_read_ahead(SSL *s, int yes) 779 { 780 s->internal->read_ahead = yes; 781 } 782 783 int 784 SSL_get_read_ahead(const SSL *s) 785 { 786 return (s->internal->read_ahead); 787 } 788 789 int 790 SSL_pending(const SSL *s) 791 { 792 /* 793 * SSL_pending cannot work properly if read-ahead is enabled 794 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 795 * and it is impossible to fix since SSL_pending cannot report 796 * errors that may be observed while scanning the new data. 797 * (Note that SSL_pending() is often used as a boolean value, 798 * so we'd better not return -1.) 799 */ 800 return (ssl3_pending(s)); 801 } 802 803 X509 * 804 SSL_get_peer_certificate(const SSL *s) 805 { 806 X509 *r; 807 808 if ((s == NULL) || (s->session == NULL)) 809 r = NULL; 810 else 811 r = s->session->peer; 812 813 if (r == NULL) 814 return (r); 815 816 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 817 818 return (r); 819 } 820 821 STACK_OF(X509) * 822 SSL_get_peer_cert_chain(const SSL *s) 823 { 824 STACK_OF(X509) *r; 825 826 if ((s == NULL) || (s->session == NULL) || 827 (SSI(s)->sess_cert == NULL)) 828 r = NULL; 829 else 830 r = SSI(s)->sess_cert->cert_chain; 831 832 /* 833 * If we are a client, cert_chain includes the peer's own 834 * certificate; 835 * if we are a server, it does not. 836 */ 837 return (r); 838 } 839 840 /* 841 * Now in theory, since the calling process own 't' it should be safe to 842 * modify. We need to be able to read f without being hassled 843 */ 844 int 845 SSL_copy_session_id(SSL *t, const SSL *f) 846 { 847 CERT *tmp; 848 849 /* Do we need to do SSL locking? */ 850 if (!SSL_set_session(t, SSL_get_session(f))) 851 return 0; 852 853 /* What if we are set up for one protocol but want to talk another? */ 854 if (t->method != f->method) { 855 t->method->internal->ssl_free(t); 856 t->method = f->method; 857 if (!t->method->internal->ssl_new(t)) 858 return 0; 859 } 860 861 tmp = t->cert; 862 if (f->cert != NULL) { 863 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 864 t->cert = f->cert; 865 } else 866 t->cert = NULL; 867 ssl_cert_free(tmp); 868 869 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) 870 return 0; 871 872 return 1; 873 } 874 875 /* Fix this so it checks all the valid key/cert options */ 876 int 877 SSL_CTX_check_private_key(const SSL_CTX *ctx) 878 { 879 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 880 (ctx->internal->cert->key->x509 == NULL)) { 881 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 882 return (0); 883 } 884 if (ctx->internal->cert->key->privatekey == NULL) { 885 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 886 return (0); 887 } 888 return (X509_check_private_key(ctx->internal->cert->key->x509, 889 ctx->internal->cert->key->privatekey)); 890 } 891 892 /* Fix this function so that it takes an optional type parameter */ 893 int 894 SSL_check_private_key(const SSL *ssl) 895 { 896 if (ssl == NULL) { 897 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 898 return (0); 899 } 900 if (ssl->cert == NULL) { 901 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 902 return (0); 903 } 904 if (ssl->cert->key->x509 == NULL) { 905 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 906 return (0); 907 } 908 if (ssl->cert->key->privatekey == NULL) { 909 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 910 return (0); 911 } 912 return (X509_check_private_key(ssl->cert->key->x509, 913 ssl->cert->key->privatekey)); 914 } 915 916 int 917 SSL_accept(SSL *s) 918 { 919 if (s->internal->handshake_func == NULL) 920 SSL_set_accept_state(s); /* Not properly initialized yet */ 921 922 return (s->method->internal->ssl_accept(s)); 923 } 924 925 int 926 SSL_connect(SSL *s) 927 { 928 if (s->internal->handshake_func == NULL) 929 SSL_set_connect_state(s); /* Not properly initialized yet */ 930 931 return (s->method->internal->ssl_connect(s)); 932 } 933 934 int 935 SSL_is_server(const SSL *s) 936 { 937 return s->server; 938 } 939 940 long 941 SSL_get_default_timeout(const SSL *s) 942 { 943 return (s->method->internal->get_timeout()); 944 } 945 946 int 947 SSL_read(SSL *s, void *buf, int num) 948 { 949 if (s->internal->handshake_func == NULL) { 950 SSLerror(s, SSL_R_UNINITIALIZED); 951 return (-1); 952 } 953 954 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 955 s->internal->rwstate = SSL_NOTHING; 956 return (0); 957 } 958 return ssl3_read(s, buf, num); 959 } 960 961 int 962 SSL_peek(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 return (0); 971 } 972 return ssl3_peek(s, buf, num); 973 } 974 975 int 976 SSL_write(SSL *s, const void *buf, int num) 977 { 978 if (s->internal->handshake_func == NULL) { 979 SSLerror(s, SSL_R_UNINITIALIZED); 980 return (-1); 981 } 982 983 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 984 s->internal->rwstate = SSL_NOTHING; 985 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 986 return (-1); 987 } 988 return ssl3_write(s, buf, num); 989 } 990 991 int 992 SSL_shutdown(SSL *s) 993 { 994 /* 995 * Note that this function behaves differently from what one might 996 * expect. Return values are 0 for no success (yet), 997 * 1 for success; but calling it once is usually not enough, 998 * even if blocking I/O is used (see ssl3_shutdown). 999 */ 1000 1001 if (s->internal->handshake_func == NULL) { 1002 SSLerror(s, SSL_R_UNINITIALIZED); 1003 return (-1); 1004 } 1005 1006 if (s != NULL && !SSL_in_init(s)) 1007 return (ssl3_shutdown(s)); 1008 1009 return (1); 1010 } 1011 1012 int 1013 SSL_renegotiate(SSL *s) 1014 { 1015 if (s->internal->renegotiate == 0) 1016 s->internal->renegotiate = 1; 1017 1018 s->internal->new_session = 1; 1019 1020 return (s->method->internal->ssl_renegotiate(s)); 1021 } 1022 1023 int 1024 SSL_renegotiate_abbreviated(SSL *s) 1025 { 1026 if (s->internal->renegotiate == 0) 1027 s->internal->renegotiate = 1; 1028 1029 s->internal->new_session = 0; 1030 1031 return (s->method->internal->ssl_renegotiate(s)); 1032 } 1033 1034 int 1035 SSL_renegotiate_pending(SSL *s) 1036 { 1037 /* 1038 * Becomes true when negotiation is requested; 1039 * false again once a handshake has finished. 1040 */ 1041 return (s->internal->renegotiate != 0); 1042 } 1043 1044 long 1045 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1046 { 1047 long l; 1048 1049 switch (cmd) { 1050 case SSL_CTRL_GET_READ_AHEAD: 1051 return (s->internal->read_ahead); 1052 case SSL_CTRL_SET_READ_AHEAD: 1053 l = s->internal->read_ahead; 1054 s->internal->read_ahead = larg; 1055 return (l); 1056 1057 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1058 s->internal->msg_callback_arg = parg; 1059 return (1); 1060 1061 case SSL_CTRL_OPTIONS: 1062 return (s->internal->options|=larg); 1063 case SSL_CTRL_CLEAR_OPTIONS: 1064 return (s->internal->options&=~larg); 1065 case SSL_CTRL_MODE: 1066 return (s->internal->mode|=larg); 1067 case SSL_CTRL_CLEAR_MODE: 1068 return (s->internal->mode &=~larg); 1069 case SSL_CTRL_GET_MAX_CERT_LIST: 1070 return (s->internal->max_cert_list); 1071 case SSL_CTRL_SET_MAX_CERT_LIST: 1072 l = s->internal->max_cert_list; 1073 s->internal->max_cert_list = larg; 1074 return (l); 1075 case SSL_CTRL_SET_MTU: 1076 #ifndef OPENSSL_NO_DTLS1 1077 if (larg < (long)dtls1_min_mtu()) 1078 return (0); 1079 #endif 1080 if (SSL_IS_DTLS(s)) { 1081 D1I(s)->mtu = larg; 1082 return (larg); 1083 } 1084 return (0); 1085 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1086 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1087 return (0); 1088 s->max_send_fragment = larg; 1089 return (1); 1090 case SSL_CTRL_GET_RI_SUPPORT: 1091 if (s->s3) 1092 return (S3I(s)->send_connection_binding); 1093 else return (0); 1094 default: 1095 if (SSL_IS_DTLS(s)) 1096 return dtls1_ctrl(s, cmd, larg, parg); 1097 return ssl3_ctrl(s, cmd, larg, parg); 1098 } 1099 } 1100 1101 long 1102 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1103 { 1104 switch (cmd) { 1105 case SSL_CTRL_SET_MSG_CALLBACK: 1106 s->internal->msg_callback = (void (*)(int write_p, int version, 1107 int content_type, const void *buf, size_t len, 1108 SSL *ssl, void *arg))(fp); 1109 return (1); 1110 1111 default: 1112 return (ssl3_callback_ctrl(s, cmd, fp)); 1113 } 1114 } 1115 1116 struct lhash_st_SSL_SESSION * 1117 SSL_CTX_sessions(SSL_CTX *ctx) 1118 { 1119 return (ctx->internal->sessions); 1120 } 1121 1122 long 1123 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1124 { 1125 long l; 1126 1127 switch (cmd) { 1128 case SSL_CTRL_GET_READ_AHEAD: 1129 return (ctx->internal->read_ahead); 1130 case SSL_CTRL_SET_READ_AHEAD: 1131 l = ctx->internal->read_ahead; 1132 ctx->internal->read_ahead = larg; 1133 return (l); 1134 1135 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1136 ctx->internal->msg_callback_arg = parg; 1137 return (1); 1138 1139 case SSL_CTRL_GET_MAX_CERT_LIST: 1140 return (ctx->internal->max_cert_list); 1141 case SSL_CTRL_SET_MAX_CERT_LIST: 1142 l = ctx->internal->max_cert_list; 1143 ctx->internal->max_cert_list = larg; 1144 return (l); 1145 1146 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1147 l = ctx->internal->session_cache_size; 1148 ctx->internal->session_cache_size = larg; 1149 return (l); 1150 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1151 return (ctx->internal->session_cache_size); 1152 case SSL_CTRL_SET_SESS_CACHE_MODE: 1153 l = ctx->internal->session_cache_mode; 1154 ctx->internal->session_cache_mode = larg; 1155 return (l); 1156 case SSL_CTRL_GET_SESS_CACHE_MODE: 1157 return (ctx->internal->session_cache_mode); 1158 1159 case SSL_CTRL_SESS_NUMBER: 1160 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1161 case SSL_CTRL_SESS_CONNECT: 1162 return (ctx->internal->stats.sess_connect); 1163 case SSL_CTRL_SESS_CONNECT_GOOD: 1164 return (ctx->internal->stats.sess_connect_good); 1165 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1166 return (ctx->internal->stats.sess_connect_renegotiate); 1167 case SSL_CTRL_SESS_ACCEPT: 1168 return (ctx->internal->stats.sess_accept); 1169 case SSL_CTRL_SESS_ACCEPT_GOOD: 1170 return (ctx->internal->stats.sess_accept_good); 1171 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1172 return (ctx->internal->stats.sess_accept_renegotiate); 1173 case SSL_CTRL_SESS_HIT: 1174 return (ctx->internal->stats.sess_hit); 1175 case SSL_CTRL_SESS_CB_HIT: 1176 return (ctx->internal->stats.sess_cb_hit); 1177 case SSL_CTRL_SESS_MISSES: 1178 return (ctx->internal->stats.sess_miss); 1179 case SSL_CTRL_SESS_TIMEOUTS: 1180 return (ctx->internal->stats.sess_timeout); 1181 case SSL_CTRL_SESS_CACHE_FULL: 1182 return (ctx->internal->stats.sess_cache_full); 1183 case SSL_CTRL_OPTIONS: 1184 return (ctx->internal->options|=larg); 1185 case SSL_CTRL_CLEAR_OPTIONS: 1186 return (ctx->internal->options&=~larg); 1187 case SSL_CTRL_MODE: 1188 return (ctx->internal->mode|=larg); 1189 case SSL_CTRL_CLEAR_MODE: 1190 return (ctx->internal->mode&=~larg); 1191 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1192 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1193 return (0); 1194 ctx->internal->max_send_fragment = larg; 1195 return (1); 1196 default: 1197 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1198 } 1199 } 1200 1201 long 1202 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1203 { 1204 switch (cmd) { 1205 case SSL_CTRL_SET_MSG_CALLBACK: 1206 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1207 int content_type, const void *buf, size_t len, SSL *ssl, 1208 void *arg))(fp); 1209 return (1); 1210 1211 default: 1212 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1213 } 1214 } 1215 1216 int 1217 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1218 { 1219 long l; 1220 1221 l = a->id - b->id; 1222 if (l == 0L) 1223 return (0); 1224 else 1225 return ((l > 0) ? 1:-1); 1226 } 1227 1228 int 1229 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1230 const SSL_CIPHER * const *bp) 1231 { 1232 long l; 1233 1234 l = (*ap)->id - (*bp)->id; 1235 if (l == 0L) 1236 return (0); 1237 else 1238 return ((l > 0) ? 1:-1); 1239 } 1240 1241 /* 1242 * Return a STACK of the ciphers available for the SSL and in order of 1243 * preference. 1244 */ 1245 STACK_OF(SSL_CIPHER) * 1246 SSL_get_ciphers(const SSL *s) 1247 { 1248 if (s != NULL) { 1249 if (s->cipher_list != NULL) { 1250 return (s->cipher_list); 1251 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1252 return (s->ctx->cipher_list); 1253 } 1254 } 1255 return (NULL); 1256 } 1257 1258 STACK_OF(SSL_CIPHER) * 1259 SSL_get_client_ciphers(const SSL *s) 1260 { 1261 if (s == NULL || s->session == NULL || !s->server) 1262 return NULL; 1263 return s->session->ciphers; 1264 } 1265 1266 STACK_OF(SSL_CIPHER) * 1267 SSL_get1_supported_ciphers(SSL *s) 1268 { 1269 STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers; 1270 const SSL_CIPHER *cipher; 1271 uint16_t min_vers, max_vers; 1272 int i; 1273 1274 if (s == NULL) 1275 return NULL; 1276 if (!ssl_supported_version_range(s, &min_vers, &max_vers)) 1277 return NULL; 1278 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1279 return NULL; 1280 if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL) 1281 return NULL; 1282 1283 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1284 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1285 goto err; 1286 if (!ssl_cipher_is_permitted(cipher, min_vers, max_vers)) 1287 continue; 1288 if (!sk_SSL_CIPHER_push(supported_ciphers, cipher)) 1289 goto err; 1290 } 1291 1292 if (sk_SSL_CIPHER_num(supported_ciphers) > 0) 1293 return supported_ciphers; 1294 1295 err: 1296 sk_SSL_CIPHER_free(supported_ciphers); 1297 return NULL; 1298 } 1299 1300 /* 1301 * Return a STACK of the ciphers available for the SSL and in order of 1302 * algorithm id. 1303 */ 1304 STACK_OF(SSL_CIPHER) * 1305 ssl_get_ciphers_by_id(SSL *s) 1306 { 1307 if (s != NULL) { 1308 if (s->internal->cipher_list_by_id != NULL) { 1309 return (s->internal->cipher_list_by_id); 1310 } else if ((s->ctx != NULL) && 1311 (s->ctx->internal->cipher_list_by_id != NULL)) { 1312 return (s->ctx->internal->cipher_list_by_id); 1313 } 1314 } 1315 return (NULL); 1316 } 1317 1318 /* See if we have any ECC cipher suites. */ 1319 int 1320 ssl_has_ecc_ciphers(SSL *s) 1321 { 1322 STACK_OF(SSL_CIPHER) *ciphers; 1323 unsigned long alg_k, alg_a; 1324 SSL_CIPHER *cipher; 1325 int i; 1326 1327 if (s->version == DTLS1_VERSION) 1328 return 0; 1329 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1330 return 0; 1331 1332 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1333 cipher = sk_SSL_CIPHER_value(ciphers, i); 1334 1335 alg_k = cipher->algorithm_mkey; 1336 alg_a = cipher->algorithm_auth; 1337 1338 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1339 return 1; 1340 } 1341 1342 return 0; 1343 } 1344 1345 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1346 const char * 1347 SSL_get_cipher_list(const SSL *s, int n) 1348 { 1349 SSL_CIPHER *c; 1350 STACK_OF(SSL_CIPHER) *sk; 1351 1352 if (s == NULL) 1353 return (NULL); 1354 sk = SSL_get_ciphers(s); 1355 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1356 return (NULL); 1357 c = sk_SSL_CIPHER_value(sk, n); 1358 if (c == NULL) 1359 return (NULL); 1360 return (c->name); 1361 } 1362 1363 STACK_OF(SSL_CIPHER) * 1364 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1365 { 1366 return ctx->cipher_list; 1367 } 1368 1369 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1370 int 1371 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1372 { 1373 STACK_OF(SSL_CIPHER) *sk; 1374 1375 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1376 &ctx->internal->cipher_list_by_id, str); 1377 /* 1378 * ssl_create_cipher_list may return an empty stack if it 1379 * was unable to find a cipher matching the given rule string 1380 * (for example if the rule string specifies a cipher which 1381 * has been disabled). This is not an error as far as 1382 * ssl_create_cipher_list is concerned, and hence 1383 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1384 * updated. 1385 */ 1386 if (sk == NULL) 1387 return (0); 1388 else if (sk_SSL_CIPHER_num(sk) == 0) { 1389 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1390 return (0); 1391 } 1392 return (1); 1393 } 1394 1395 /* Specify the ciphers to be used by the SSL. */ 1396 int 1397 SSL_set_cipher_list(SSL *s, const char *str) 1398 { 1399 STACK_OF(SSL_CIPHER) *sk; 1400 1401 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1402 &s->internal->cipher_list_by_id, str); 1403 /* see comment in SSL_CTX_set_cipher_list */ 1404 if (sk == NULL) 1405 return (0); 1406 else if (sk_SSL_CIPHER_num(sk) == 0) { 1407 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1408 return (0); 1409 } 1410 return (1); 1411 } 1412 1413 /* works well for SSLv2, not so good for SSLv3 */ 1414 char * 1415 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1416 { 1417 char *end; 1418 STACK_OF(SSL_CIPHER) *sk; 1419 SSL_CIPHER *c; 1420 size_t curlen = 0; 1421 int i; 1422 1423 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1424 return (NULL); 1425 1426 sk = s->session->ciphers; 1427 if (sk_SSL_CIPHER_num(sk) == 0) 1428 return (NULL); 1429 1430 buf[0] = '\0'; 1431 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1432 c = sk_SSL_CIPHER_value(sk, i); 1433 end = buf + curlen; 1434 if (strlcat(buf, c->name, len) >= len || 1435 (curlen = strlcat(buf, ":", len)) >= len) { 1436 /* remove truncated cipher from list */ 1437 *end = '\0'; 1438 break; 1439 } 1440 } 1441 /* remove trailing colon */ 1442 if ((end = strrchr(buf, ':')) != NULL) 1443 *end = '\0'; 1444 return (buf); 1445 } 1446 1447 /* 1448 * Return a servername extension value if provided in Client Hello, or NULL. 1449 * So far, only host_name types are defined (RFC 3546). 1450 */ 1451 const char * 1452 SSL_get_servername(const SSL *s, const int type) 1453 { 1454 if (type != TLSEXT_NAMETYPE_host_name) 1455 return (NULL); 1456 1457 return (s->session && !s->tlsext_hostname ? 1458 s->session->tlsext_hostname : 1459 s->tlsext_hostname); 1460 } 1461 1462 int 1463 SSL_get_servername_type(const SSL *s) 1464 { 1465 if (s->session && 1466 (!s->tlsext_hostname ? 1467 s->session->tlsext_hostname : s->tlsext_hostname)) 1468 return (TLSEXT_NAMETYPE_host_name); 1469 return (-1); 1470 } 1471 1472 /* 1473 * SSL_select_next_proto implements standard protocol selection. It is 1474 * expected that this function is called from the callback set by 1475 * SSL_CTX_set_alpn_select_cb. 1476 * 1477 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1478 * strings. The length byte itself is not included in the length. A byte 1479 * string of length 0 is invalid. No byte string may be truncated. 1480 * 1481 * It returns either: 1482 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1483 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1484 */ 1485 int 1486 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1487 const unsigned char *server, unsigned int server_len, 1488 const unsigned char *client, unsigned int client_len) 1489 { 1490 unsigned int i, j; 1491 const unsigned char *result; 1492 int status = OPENSSL_NPN_UNSUPPORTED; 1493 1494 /* 1495 * For each protocol in server preference order, 1496 * see if we support it. 1497 */ 1498 for (i = 0; i < server_len; ) { 1499 for (j = 0; j < client_len; ) { 1500 if (server[i] == client[j] && 1501 memcmp(&server[i + 1], 1502 &client[j + 1], server[i]) == 0) { 1503 /* We found a match */ 1504 result = &server[i]; 1505 status = OPENSSL_NPN_NEGOTIATED; 1506 goto found; 1507 } 1508 j += client[j]; 1509 j++; 1510 } 1511 i += server[i]; 1512 i++; 1513 } 1514 1515 /* There's no overlap between our protocols and the server's list. */ 1516 result = client; 1517 status = OPENSSL_NPN_NO_OVERLAP; 1518 1519 found: 1520 *out = (unsigned char *) result + 1; 1521 *outlen = result[0]; 1522 return (status); 1523 } 1524 1525 /* SSL_get0_next_proto_negotiated is deprecated. */ 1526 void 1527 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1528 unsigned *len) 1529 { 1530 *data = NULL; 1531 *len = 0; 1532 } 1533 1534 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1535 void 1536 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1537 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1538 { 1539 } 1540 1541 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1542 void 1543 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1544 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1545 unsigned int inlen, void *arg), void *arg) 1546 { 1547 } 1548 1549 /* 1550 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1551 * protocols, which must be in wire-format (i.e. a series of non-empty, 1552 * 8-bit length-prefixed strings). Returns 0 on success. 1553 */ 1554 int 1555 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1556 unsigned int protos_len) 1557 { 1558 int failed = 1; 1559 1560 if (protos == NULL || protos_len == 0) 1561 goto err; 1562 1563 free(ctx->internal->alpn_client_proto_list); 1564 ctx->internal->alpn_client_proto_list = NULL; 1565 ctx->internal->alpn_client_proto_list_len = 0; 1566 1567 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1568 == NULL) 1569 goto err; 1570 ctx->internal->alpn_client_proto_list_len = protos_len; 1571 1572 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1573 1574 failed = 0; 1575 1576 err: 1577 /* NOTE: Return values are the reverse of what you expect. */ 1578 return (failed); 1579 } 1580 1581 /* 1582 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1583 * protocols, which must be in wire-format (i.e. a series of non-empty, 1584 * 8-bit length-prefixed strings). Returns 0 on success. 1585 */ 1586 int 1587 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1588 unsigned int protos_len) 1589 { 1590 int failed = 1; 1591 1592 if (protos == NULL || protos_len == 0) 1593 goto err; 1594 1595 free(ssl->internal->alpn_client_proto_list); 1596 ssl->internal->alpn_client_proto_list = NULL; 1597 ssl->internal->alpn_client_proto_list_len = 0; 1598 1599 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1600 == NULL) 1601 goto err; 1602 ssl->internal->alpn_client_proto_list_len = protos_len; 1603 1604 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1605 1606 failed = 0; 1607 1608 err: 1609 /* NOTE: Return values are the reverse of what you expect. */ 1610 return (failed); 1611 } 1612 1613 /* 1614 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1615 * ClientHello processing in order to select an ALPN protocol from the 1616 * client's list of offered protocols. 1617 */ 1618 void 1619 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1620 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1621 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1622 { 1623 ctx->internal->alpn_select_cb = cb; 1624 ctx->internal->alpn_select_cb_arg = arg; 1625 } 1626 1627 /* 1628 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1629 * it sets data to point to len bytes of protocol name (not including the 1630 * leading length-prefix byte). If the server didn't respond with* a negotiated 1631 * protocol then len will be zero. 1632 */ 1633 void 1634 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1635 unsigned *len) 1636 { 1637 *data = NULL; 1638 *len = 0; 1639 1640 if (ssl->s3 != NULL) { 1641 *data = ssl->s3->internal->alpn_selected; 1642 *len = ssl->s3->internal->alpn_selected_len; 1643 } 1644 } 1645 1646 int 1647 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1648 const char *label, size_t llen, const unsigned char *p, size_t plen, 1649 int use_context) 1650 { 1651 return (tls1_export_keying_material(s, out, olen, 1652 label, llen, p, plen, use_context)); 1653 } 1654 1655 static unsigned long 1656 ssl_session_hash(const SSL_SESSION *a) 1657 { 1658 unsigned long l; 1659 1660 l = (unsigned long) 1661 ((unsigned int) a->session_id[0] )| 1662 ((unsigned int) a->session_id[1]<< 8L)| 1663 ((unsigned long)a->session_id[2]<<16L)| 1664 ((unsigned long)a->session_id[3]<<24L); 1665 return (l); 1666 } 1667 1668 /* 1669 * NB: If this function (or indeed the hash function which uses a sort of 1670 * coarser function than this one) is changed, ensure 1671 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1672 * able to construct an SSL_SESSION that will collide with any existing session 1673 * with a matching session ID. 1674 */ 1675 static int 1676 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1677 { 1678 if (a->ssl_version != b->ssl_version) 1679 return (1); 1680 if (a->session_id_length != b->session_id_length) 1681 return (1); 1682 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1683 return (1); 1684 return (0); 1685 } 1686 1687 /* 1688 * These wrapper functions should remain rather than redeclaring 1689 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1690 * variable. The reason is that the functions aren't static, they're exposed via 1691 * ssl.h. 1692 */ 1693 static unsigned long 1694 ssl_session_LHASH_HASH(const void *arg) 1695 { 1696 const SSL_SESSION *a = arg; 1697 1698 return ssl_session_hash(a); 1699 } 1700 1701 static int 1702 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1703 { 1704 const SSL_SESSION *a = arg1; 1705 const SSL_SESSION *b = arg2; 1706 1707 return ssl_session_cmp(a, b); 1708 } 1709 1710 SSL_CTX * 1711 SSL_CTX_new(const SSL_METHOD *meth) 1712 { 1713 SSL_CTX *ret; 1714 1715 if (!OPENSSL_init_ssl(0, NULL)) { 1716 SSLerrorx(SSL_R_LIBRARY_BUG); 1717 return (NULL); 1718 } 1719 1720 if (meth == NULL) { 1721 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1722 return (NULL); 1723 } 1724 1725 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1726 SSLerrorx(ERR_R_MALLOC_FAILURE); 1727 return (NULL); 1728 } 1729 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1730 free(ret); 1731 SSLerrorx(ERR_R_MALLOC_FAILURE); 1732 return (NULL); 1733 } 1734 1735 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1736 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1737 goto err; 1738 } 1739 1740 ret->method = meth; 1741 ret->internal->min_version = meth->internal->min_version; 1742 ret->internal->max_version = meth->internal->max_version; 1743 1744 ret->cert_store = NULL; 1745 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1746 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1747 ret->internal->session_cache_head = NULL; 1748 ret->internal->session_cache_tail = NULL; 1749 1750 /* We take the system default */ 1751 ret->session_timeout = meth->internal->get_timeout(); 1752 1753 ret->internal->new_session_cb = 0; 1754 ret->internal->remove_session_cb = 0; 1755 ret->internal->get_session_cb = 0; 1756 ret->internal->generate_session_id = 0; 1757 1758 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1759 1760 ret->references = 1; 1761 ret->internal->quiet_shutdown = 0; 1762 1763 ret->internal->info_callback = NULL; 1764 1765 ret->internal->app_verify_callback = 0; 1766 ret->internal->app_verify_arg = NULL; 1767 1768 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1769 ret->internal->read_ahead = 0; 1770 ret->internal->msg_callback = 0; 1771 ret->internal->msg_callback_arg = NULL; 1772 ret->verify_mode = SSL_VERIFY_NONE; 1773 ret->sid_ctx_length = 0; 1774 ret->internal->default_verify_callback = NULL; 1775 1776 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1777 goto err; 1778 1779 ret->default_passwd_callback = 0; 1780 ret->default_passwd_callback_userdata = NULL; 1781 ret->internal->client_cert_cb = 0; 1782 ret->internal->app_gen_cookie_cb = 0; 1783 ret->internal->app_verify_cookie_cb = 0; 1784 1785 ret->internal->sessions = lh_SSL_SESSION_new(); 1786 if (ret->internal->sessions == NULL) 1787 goto err; 1788 ret->cert_store = X509_STORE_new(); 1789 if (ret->cert_store == NULL) 1790 goto err; 1791 1792 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1793 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1794 if (ret->cipher_list == NULL || 1795 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1796 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1797 goto err2; 1798 } 1799 1800 ret->param = X509_VERIFY_PARAM_new(); 1801 if (!ret->param) 1802 goto err; 1803 1804 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1805 goto err; 1806 1807 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1808 1809 ret->extra_certs = NULL; 1810 1811 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1812 1813 ret->internal->tlsext_servername_callback = 0; 1814 ret->internal->tlsext_servername_arg = NULL; 1815 1816 /* Setup RFC4507 ticket keys */ 1817 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1818 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1819 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1820 1821 ret->internal->tlsext_status_cb = 0; 1822 ret->internal->tlsext_status_arg = NULL; 1823 1824 #ifndef OPENSSL_NO_ENGINE 1825 ret->internal->client_cert_engine = NULL; 1826 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1827 #define eng_strx(x) #x 1828 #define eng_str(x) eng_strx(x) 1829 /* Use specific client engine automatically... ignore errors */ 1830 { 1831 ENGINE *eng; 1832 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1833 if (!eng) { 1834 ERR_clear_error(); 1835 ENGINE_load_builtin_engines(); 1836 eng = ENGINE_by_id(eng_str( 1837 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1838 } 1839 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1840 ERR_clear_error(); 1841 } 1842 #endif 1843 #endif 1844 /* 1845 * Default is to connect to non-RI servers. When RI is more widely 1846 * deployed might change this. 1847 */ 1848 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1849 1850 return (ret); 1851 err: 1852 SSLerrorx(ERR_R_MALLOC_FAILURE); 1853 err2: 1854 SSL_CTX_free(ret); 1855 return (NULL); 1856 } 1857 1858 void 1859 SSL_CTX_free(SSL_CTX *ctx) 1860 { 1861 int i; 1862 1863 if (ctx == NULL) 1864 return; 1865 1866 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1867 if (i > 0) 1868 return; 1869 1870 X509_VERIFY_PARAM_free(ctx->param); 1871 1872 /* 1873 * Free internal session cache. However: the remove_cb() may reference 1874 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1875 * after the sessions were flushed. 1876 * As the ex_data handling routines might also touch the session cache, 1877 * the most secure solution seems to be: empty (flush) the cache, then 1878 * free ex_data, then finally free the cache. 1879 * (See ticket [openssl.org #212].) 1880 */ 1881 if (ctx->internal->sessions != NULL) 1882 SSL_CTX_flush_sessions(ctx, 0); 1883 1884 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1885 1886 lh_SSL_SESSION_free(ctx->internal->sessions); 1887 1888 X509_STORE_free(ctx->cert_store); 1889 sk_SSL_CIPHER_free(ctx->cipher_list); 1890 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1891 ssl_cert_free(ctx->internal->cert); 1892 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1893 sk_X509_pop_free(ctx->extra_certs, X509_free); 1894 1895 #ifndef OPENSSL_NO_SRTP 1896 if (ctx->internal->srtp_profiles) 1897 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1898 #endif 1899 1900 #ifndef OPENSSL_NO_ENGINE 1901 ENGINE_finish(ctx->internal->client_cert_engine); 1902 #endif 1903 1904 free(ctx->internal->tlsext_ecpointformatlist); 1905 free(ctx->internal->tlsext_supportedgroups); 1906 1907 free(ctx->internal->alpn_client_proto_list); 1908 1909 free(ctx->internal); 1910 free(ctx); 1911 } 1912 1913 int 1914 SSL_CTX_up_ref(SSL_CTX *ctx) 1915 { 1916 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1917 return ((refs > 1) ? 1 : 0); 1918 } 1919 1920 pem_password_cb * 1921 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 1922 { 1923 return (ctx->default_passwd_callback); 1924 } 1925 1926 void 1927 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1928 { 1929 ctx->default_passwd_callback = cb; 1930 } 1931 1932 void * 1933 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 1934 { 1935 return ctx->default_passwd_callback_userdata; 1936 } 1937 1938 void 1939 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1940 { 1941 ctx->default_passwd_callback_userdata = u; 1942 } 1943 1944 void 1945 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1946 void *), void *arg) 1947 { 1948 ctx->internal->app_verify_callback = cb; 1949 ctx->internal->app_verify_arg = arg; 1950 } 1951 1952 void 1953 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1954 { 1955 ctx->verify_mode = mode; 1956 ctx->internal->default_verify_callback = cb; 1957 } 1958 1959 void 1960 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 1961 { 1962 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1963 } 1964 1965 void 1966 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1967 { 1968 int rsa_enc, rsa_sign, dh_tmp; 1969 int have_ecc_cert; 1970 unsigned long mask_k, mask_a; 1971 X509 *x = NULL; 1972 CERT_PKEY *cpk; 1973 1974 if (c == NULL) 1975 return; 1976 1977 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 1978 c->dh_tmp_auto != 0); 1979 1980 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 1981 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 1982 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1983 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 1984 cpk = &(c->pkeys[SSL_PKEY_ECC]); 1985 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 1986 1987 mask_k = 0; 1988 mask_a = 0; 1989 1990 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1991 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1992 mask_k |= SSL_kGOST; 1993 mask_a |= SSL_aGOST01; 1994 } 1995 1996 if (rsa_enc) 1997 mask_k |= SSL_kRSA; 1998 1999 if (dh_tmp) 2000 mask_k |= SSL_kDHE; 2001 2002 if (rsa_enc || rsa_sign) 2003 mask_a |= SSL_aRSA; 2004 2005 mask_a |= SSL_aNULL; 2006 2007 /* 2008 * An ECC certificate may be usable for ECDH and/or 2009 * ECDSA cipher suites depending on the key usage extension. 2010 */ 2011 if (have_ecc_cert) { 2012 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2013 2014 /* This call populates extension flags (ex_flags). */ 2015 X509_check_purpose(x, -1, 0); 2016 2017 /* Key usage, if present, must allow signing. */ 2018 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2019 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2020 mask_a |= SSL_aECDSA; 2021 } 2022 2023 mask_k |= SSL_kECDHE; 2024 2025 c->mask_k = mask_k; 2026 c->mask_a = mask_a; 2027 c->valid = 1; 2028 } 2029 2030 /* See if this handshake is using an ECC cipher suite. */ 2031 int 2032 ssl_using_ecc_cipher(SSL *s) 2033 { 2034 unsigned long alg_a, alg_k; 2035 2036 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2037 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2038 2039 return SSI(s)->tlsext_ecpointformatlist != NULL && 2040 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2041 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2042 } 2043 2044 int 2045 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2046 { 2047 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2048 unsigned long alg_a; 2049 2050 alg_a = cs->algorithm_auth; 2051 2052 if (alg_a & SSL_aECDSA) { 2053 /* This call populates extension flags (ex_flags). */ 2054 X509_check_purpose(x, -1, 0); 2055 2056 /* Key usage, if present, must allow signing. */ 2057 if ((x->ex_flags & EXFLAG_KUSAGE) && 2058 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2059 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2060 return (0); 2061 } 2062 } 2063 2064 return (1); 2065 } 2066 2067 CERT_PKEY * 2068 ssl_get_server_send_pkey(const SSL *s) 2069 { 2070 unsigned long alg_a; 2071 CERT *c; 2072 int i; 2073 2074 c = s->cert; 2075 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2076 2077 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2078 2079 if (alg_a & SSL_aECDSA) { 2080 i = SSL_PKEY_ECC; 2081 } else if (alg_a & SSL_aRSA) { 2082 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2083 i = SSL_PKEY_RSA_SIGN; 2084 else 2085 i = SSL_PKEY_RSA_ENC; 2086 } else if (alg_a & SSL_aGOST01) { 2087 i = SSL_PKEY_GOST01; 2088 } else { /* if (alg_a & SSL_aNULL) */ 2089 SSLerror(s, ERR_R_INTERNAL_ERROR); 2090 return (NULL); 2091 } 2092 2093 return (c->pkeys + i); 2094 } 2095 2096 EVP_PKEY * 2097 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd, 2098 const struct ssl_sigalg **sap) 2099 { 2100 const struct ssl_sigalg *sigalg = NULL; 2101 EVP_PKEY *pkey = NULL; 2102 unsigned long alg_a; 2103 CERT *c; 2104 int idx = -1; 2105 2106 alg_a = cipher->algorithm_auth; 2107 c = s->cert; 2108 2109 if (alg_a & SSL_aRSA) { 2110 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2111 idx = SSL_PKEY_RSA_SIGN; 2112 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2113 idx = SSL_PKEY_RSA_ENC; 2114 } else if ((alg_a & SSL_aECDSA) && 2115 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2116 idx = SSL_PKEY_ECC; 2117 if (idx == -1) { 2118 SSLerror(s, ERR_R_INTERNAL_ERROR); 2119 return (NULL); 2120 } 2121 2122 pkey = c->pkeys[idx].privatekey; 2123 if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) { 2124 SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR); 2125 return (NULL); 2126 } 2127 *pmd = sigalg->md(); 2128 *sap = sigalg; 2129 2130 return (pkey); 2131 } 2132 2133 DH * 2134 ssl_get_auto_dh(SSL *s) 2135 { 2136 CERT_PKEY *cpk; 2137 int keylen; 2138 DH *dhp; 2139 2140 if (s->cert->dh_tmp_auto == 2) { 2141 keylen = 1024; 2142 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2143 keylen = 1024; 2144 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2145 keylen = 3072; 2146 } else { 2147 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2148 return (NULL); 2149 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2150 return (NULL); 2151 keylen = EVP_PKEY_bits(cpk->privatekey); 2152 } 2153 2154 if ((dhp = DH_new()) == NULL) 2155 return (NULL); 2156 2157 dhp->g = BN_new(); 2158 if (dhp->g != NULL) 2159 BN_set_word(dhp->g, 2); 2160 2161 if (keylen >= 8192) 2162 dhp->p = get_rfc3526_prime_8192(NULL); 2163 else if (keylen >= 4096) 2164 dhp->p = get_rfc3526_prime_4096(NULL); 2165 else if (keylen >= 3072) 2166 dhp->p = get_rfc3526_prime_3072(NULL); 2167 else if (keylen >= 2048) 2168 dhp->p = get_rfc3526_prime_2048(NULL); 2169 else if (keylen >= 1536) 2170 dhp->p = get_rfc3526_prime_1536(NULL); 2171 else 2172 dhp->p = get_rfc2409_prime_1024(NULL); 2173 2174 if (dhp->p == NULL || dhp->g == NULL) { 2175 DH_free(dhp); 2176 return (NULL); 2177 } 2178 return (dhp); 2179 } 2180 2181 void 2182 ssl_update_cache(SSL *s, int mode) 2183 { 2184 int i; 2185 2186 /* 2187 * If the session_id_length is 0, we are not supposed to cache it, 2188 * and it would be rather hard to do anyway :-) 2189 */ 2190 if (s->session->session_id_length == 0) 2191 return; 2192 2193 i = s->session_ctx->internal->session_cache_mode; 2194 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2195 || SSL_CTX_add_session(s->session_ctx, s->session)) 2196 && (s->session_ctx->internal->new_session_cb != NULL)) { 2197 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2198 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2199 SSL_SESSION_free(s->session); 2200 } 2201 2202 /* auto flush every 255 connections */ 2203 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2204 ((i & mode) == mode)) { 2205 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2206 s->session_ctx->internal->stats.sess_connect_good : 2207 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2208 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2209 } 2210 } 2211 } 2212 2213 const SSL_METHOD * 2214 SSL_get_ssl_method(SSL *s) 2215 { 2216 return (s->method); 2217 } 2218 2219 int 2220 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2221 { 2222 int conn = -1; 2223 int ret = 1; 2224 2225 if (s->method != meth) { 2226 if (s->internal->handshake_func != NULL) 2227 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2228 2229 if (s->method->internal->version == meth->internal->version) 2230 s->method = meth; 2231 else { 2232 s->method->internal->ssl_free(s); 2233 s->method = meth; 2234 ret = s->method->internal->ssl_new(s); 2235 } 2236 2237 if (conn == 1) 2238 s->internal->handshake_func = meth->internal->ssl_connect; 2239 else if (conn == 0) 2240 s->internal->handshake_func = meth->internal->ssl_accept; 2241 } 2242 return (ret); 2243 } 2244 2245 int 2246 SSL_get_error(const SSL *s, int i) 2247 { 2248 int reason; 2249 unsigned long l; 2250 BIO *bio; 2251 2252 if (i > 0) 2253 return (SSL_ERROR_NONE); 2254 2255 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2256 * etc, where we do encode the error */ 2257 if ((l = ERR_peek_error()) != 0) { 2258 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2259 return (SSL_ERROR_SYSCALL); 2260 else 2261 return (SSL_ERROR_SSL); 2262 } 2263 2264 if ((i < 0) && SSL_want_read(s)) { 2265 bio = SSL_get_rbio(s); 2266 if (BIO_should_read(bio)) { 2267 return (SSL_ERROR_WANT_READ); 2268 } else if (BIO_should_write(bio)) { 2269 /* 2270 * This one doesn't make too much sense... We never 2271 * try to write to the rbio, and an application 2272 * program where rbio and wbio are separate couldn't 2273 * even know what it should wait for. However if we 2274 * ever set s->internal->rwstate incorrectly (so that we have 2275 * SSL_want_read(s) instead of SSL_want_write(s)) 2276 * and rbio and wbio *are* the same, this test works 2277 * around that bug; so it might be safer to keep it. 2278 */ 2279 return (SSL_ERROR_WANT_WRITE); 2280 } else if (BIO_should_io_special(bio)) { 2281 reason = BIO_get_retry_reason(bio); 2282 if (reason == BIO_RR_CONNECT) 2283 return (SSL_ERROR_WANT_CONNECT); 2284 else if (reason == BIO_RR_ACCEPT) 2285 return (SSL_ERROR_WANT_ACCEPT); 2286 else 2287 return (SSL_ERROR_SYSCALL); /* unknown */ 2288 } 2289 } 2290 2291 if ((i < 0) && SSL_want_write(s)) { 2292 bio = SSL_get_wbio(s); 2293 if (BIO_should_write(bio)) { 2294 return (SSL_ERROR_WANT_WRITE); 2295 } else if (BIO_should_read(bio)) { 2296 /* 2297 * See above (SSL_want_read(s) with 2298 * BIO_should_write(bio)) 2299 */ 2300 return (SSL_ERROR_WANT_READ); 2301 } else if (BIO_should_io_special(bio)) { 2302 reason = BIO_get_retry_reason(bio); 2303 if (reason == BIO_RR_CONNECT) 2304 return (SSL_ERROR_WANT_CONNECT); 2305 else if (reason == BIO_RR_ACCEPT) 2306 return (SSL_ERROR_WANT_ACCEPT); 2307 else 2308 return (SSL_ERROR_SYSCALL); 2309 } 2310 } 2311 if ((i < 0) && SSL_want_x509_lookup(s)) { 2312 return (SSL_ERROR_WANT_X509_LOOKUP); 2313 } 2314 2315 if (i == 0) { 2316 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2317 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2318 return (SSL_ERROR_ZERO_RETURN); 2319 } 2320 return (SSL_ERROR_SYSCALL); 2321 } 2322 2323 int 2324 SSL_do_handshake(SSL *s) 2325 { 2326 int ret = 1; 2327 2328 if (s->internal->handshake_func == NULL) { 2329 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2330 return (-1); 2331 } 2332 2333 s->method->internal->ssl_renegotiate_check(s); 2334 2335 if (SSL_in_init(s) || SSL_in_before(s)) { 2336 ret = s->internal->handshake_func(s); 2337 } 2338 return (ret); 2339 } 2340 2341 /* 2342 * For the next 2 functions, SSL_clear() sets shutdown and so 2343 * one of these calls will reset it 2344 */ 2345 void 2346 SSL_set_accept_state(SSL *s) 2347 { 2348 s->server = 1; 2349 s->internal->shutdown = 0; 2350 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2351 s->internal->handshake_func = s->method->internal->ssl_accept; 2352 ssl_clear_cipher_state(s); 2353 } 2354 2355 void 2356 SSL_set_connect_state(SSL *s) 2357 { 2358 s->server = 0; 2359 s->internal->shutdown = 0; 2360 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2361 s->internal->handshake_func = s->method->internal->ssl_connect; 2362 ssl_clear_cipher_state(s); 2363 } 2364 2365 int 2366 ssl_undefined_function(SSL *s) 2367 { 2368 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2369 return (0); 2370 } 2371 2372 int 2373 ssl_undefined_void_function(void) 2374 { 2375 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2376 return (0); 2377 } 2378 2379 int 2380 ssl_undefined_const_function(const SSL *s) 2381 { 2382 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2383 return (0); 2384 } 2385 2386 const char * 2387 ssl_version_string(int ver) 2388 { 2389 switch (ver) { 2390 case DTLS1_VERSION: 2391 return (SSL_TXT_DTLS1); 2392 case TLS1_VERSION: 2393 return (SSL_TXT_TLSV1); 2394 case TLS1_1_VERSION: 2395 return (SSL_TXT_TLSV1_1); 2396 case TLS1_2_VERSION: 2397 return (SSL_TXT_TLSV1_2); 2398 case TLS1_3_VERSION: 2399 return (SSL_TXT_TLSV1_3); 2400 default: 2401 return ("unknown"); 2402 } 2403 } 2404 2405 const char * 2406 SSL_get_version(const SSL *s) 2407 { 2408 return ssl_version_string(s->version); 2409 } 2410 2411 SSL * 2412 SSL_dup(SSL *s) 2413 { 2414 STACK_OF(X509_NAME) *sk; 2415 X509_NAME *xn; 2416 SSL *ret; 2417 int i; 2418 2419 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2420 goto err; 2421 2422 ret->version = s->version; 2423 ret->internal->type = s->internal->type; 2424 ret->method = s->method; 2425 2426 if (s->session != NULL) { 2427 if (!SSL_copy_session_id(ret, s)) 2428 goto err; 2429 } else { 2430 /* 2431 * No session has been established yet, so we have to expect 2432 * that s->cert or ret->cert will be changed later -- 2433 * they should not both point to the same object, 2434 * and thus we can't use SSL_copy_session_id. 2435 */ 2436 2437 ret->method->internal->ssl_free(ret); 2438 ret->method = s->method; 2439 ret->method->internal->ssl_new(ret); 2440 2441 ssl_cert_free(ret->cert); 2442 if ((ret->cert = ssl_cert_dup(s->cert)) == NULL) 2443 goto err; 2444 2445 if (!SSL_set_session_id_context(ret, s->sid_ctx, 2446 s->sid_ctx_length)) 2447 goto err; 2448 } 2449 2450 ret->internal->options = s->internal->options; 2451 ret->internal->mode = s->internal->mode; 2452 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2453 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2454 ret->internal->msg_callback = s->internal->msg_callback; 2455 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2456 SSL_set_verify(ret, SSL_get_verify_mode(s), 2457 SSL_get_verify_callback(s)); 2458 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2459 ret->internal->generate_session_id = s->internal->generate_session_id; 2460 2461 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2462 2463 ret->internal->debug = s->internal->debug; 2464 2465 /* copy app data, a little dangerous perhaps */ 2466 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2467 &ret->internal->ex_data, &s->internal->ex_data)) 2468 goto err; 2469 2470 /* setup rbio, and wbio */ 2471 if (s->rbio != NULL) { 2472 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2473 goto err; 2474 } 2475 if (s->wbio != NULL) { 2476 if (s->wbio != s->rbio) { 2477 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2478 goto err; 2479 } else 2480 ret->wbio = ret->rbio; 2481 } 2482 ret->internal->rwstate = s->internal->rwstate; 2483 ret->internal->in_handshake = s->internal->in_handshake; 2484 ret->internal->handshake_func = s->internal->handshake_func; 2485 ret->server = s->server; 2486 ret->internal->renegotiate = s->internal->renegotiate; 2487 ret->internal->new_session = s->internal->new_session; 2488 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2489 ret->internal->shutdown = s->internal->shutdown; 2490 /* SSL_dup does not really work at any state, though */ 2491 S3I(ret)->hs.state = S3I(s)->hs.state; 2492 ret->internal->rstate = s->internal->rstate; 2493 2494 /* 2495 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2496 * ret->init_off 2497 */ 2498 ret->internal->init_num = 0; 2499 2500 ret->internal->hit = s->internal->hit; 2501 2502 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2503 2504 /* dup the cipher_list and cipher_list_by_id stacks */ 2505 if (s->cipher_list != NULL) { 2506 if ((ret->cipher_list = 2507 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2508 goto err; 2509 } 2510 if (s->internal->cipher_list_by_id != NULL) { 2511 if ((ret->internal->cipher_list_by_id = 2512 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2513 goto err; 2514 } 2515 2516 /* Dup the client_CA list */ 2517 if (s->internal->client_CA != NULL) { 2518 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2519 ret->internal->client_CA = sk; 2520 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2521 xn = sk_X509_NAME_value(sk, i); 2522 if (sk_X509_NAME_set(sk, i, 2523 X509_NAME_dup(xn)) == NULL) { 2524 X509_NAME_free(xn); 2525 goto err; 2526 } 2527 } 2528 } 2529 2530 return ret; 2531 err: 2532 SSL_free(ret); 2533 return NULL; 2534 } 2535 2536 void 2537 ssl_clear_cipher_state(SSL *s) 2538 { 2539 ssl_clear_cipher_read_state(s); 2540 ssl_clear_cipher_write_state(s); 2541 } 2542 2543 void 2544 ssl_clear_cipher_read_state(SSL *s) 2545 { 2546 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2547 s->enc_read_ctx = NULL; 2548 EVP_MD_CTX_free(s->read_hash); 2549 s->read_hash = NULL; 2550 2551 if (s->internal->aead_read_ctx != NULL) { 2552 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2553 free(s->internal->aead_read_ctx); 2554 s->internal->aead_read_ctx = NULL; 2555 } 2556 } 2557 2558 void 2559 ssl_clear_cipher_write_state(SSL *s) 2560 { 2561 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2562 s->internal->enc_write_ctx = NULL; 2563 EVP_MD_CTX_free(s->internal->write_hash); 2564 s->internal->write_hash = NULL; 2565 2566 if (s->internal->aead_write_ctx != NULL) { 2567 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2568 free(s->internal->aead_write_ctx); 2569 s->internal->aead_write_ctx = NULL; 2570 } 2571 } 2572 2573 /* Fix this function so that it takes an optional type parameter */ 2574 X509 * 2575 SSL_get_certificate(const SSL *s) 2576 { 2577 return (s->cert->key->x509); 2578 } 2579 2580 /* Fix this function so that it takes an optional type parameter */ 2581 EVP_PKEY * 2582 SSL_get_privatekey(const SSL *s) 2583 { 2584 return (s->cert->key->privatekey); 2585 } 2586 2587 const SSL_CIPHER * 2588 SSL_get_current_cipher(const SSL *s) 2589 { 2590 if ((s->session != NULL) && (s->session->cipher != NULL)) 2591 return (s->session->cipher); 2592 return (NULL); 2593 } 2594 const void * 2595 SSL_get_current_compression(SSL *s) 2596 { 2597 return (NULL); 2598 } 2599 2600 const void * 2601 SSL_get_current_expansion(SSL *s) 2602 { 2603 return (NULL); 2604 } 2605 2606 size_t 2607 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2608 { 2609 size_t len = sizeof(s->s3->client_random); 2610 2611 if (out == NULL) 2612 return len; 2613 2614 if (len > max_out) 2615 len = max_out; 2616 2617 memcpy(out, s->s3->client_random, len); 2618 2619 return len; 2620 } 2621 2622 size_t 2623 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2624 { 2625 size_t len = sizeof(s->s3->server_random); 2626 2627 if (out == NULL) 2628 return len; 2629 2630 if (len > max_out) 2631 len = max_out; 2632 2633 memcpy(out, s->s3->server_random, len); 2634 2635 return len; 2636 } 2637 2638 int 2639 ssl_init_wbio_buffer(SSL *s, int push) 2640 { 2641 BIO *bbio; 2642 2643 if (s->bbio == NULL) { 2644 bbio = BIO_new(BIO_f_buffer()); 2645 if (bbio == NULL) 2646 return (0); 2647 s->bbio = bbio; 2648 } else { 2649 bbio = s->bbio; 2650 if (s->bbio == s->wbio) 2651 s->wbio = BIO_pop(s->wbio); 2652 } 2653 (void)BIO_reset(bbio); 2654 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2655 if (!BIO_set_read_buffer_size(bbio, 1)) { 2656 SSLerror(s, ERR_R_BUF_LIB); 2657 return (0); 2658 } 2659 if (push) { 2660 if (s->wbio != bbio) 2661 s->wbio = BIO_push(bbio, s->wbio); 2662 } else { 2663 if (s->wbio == bbio) 2664 s->wbio = BIO_pop(bbio); 2665 } 2666 return (1); 2667 } 2668 2669 void 2670 ssl_free_wbio_buffer(SSL *s) 2671 { 2672 if (s == NULL) 2673 return; 2674 2675 if (s->bbio == NULL) 2676 return; 2677 2678 if (s->bbio == s->wbio) { 2679 /* remove buffering */ 2680 s->wbio = BIO_pop(s->wbio); 2681 } 2682 BIO_free(s->bbio); 2683 s->bbio = NULL; 2684 } 2685 2686 void 2687 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2688 { 2689 ctx->internal->quiet_shutdown = mode; 2690 } 2691 2692 int 2693 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2694 { 2695 return (ctx->internal->quiet_shutdown); 2696 } 2697 2698 void 2699 SSL_set_quiet_shutdown(SSL *s, int mode) 2700 { 2701 s->internal->quiet_shutdown = mode; 2702 } 2703 2704 int 2705 SSL_get_quiet_shutdown(const SSL *s) 2706 { 2707 return (s->internal->quiet_shutdown); 2708 } 2709 2710 void 2711 SSL_set_shutdown(SSL *s, int mode) 2712 { 2713 s->internal->shutdown = mode; 2714 } 2715 2716 int 2717 SSL_get_shutdown(const SSL *s) 2718 { 2719 return (s->internal->shutdown); 2720 } 2721 2722 int 2723 SSL_version(const SSL *s) 2724 { 2725 return (s->version); 2726 } 2727 2728 SSL_CTX * 2729 SSL_get_SSL_CTX(const SSL *ssl) 2730 { 2731 return (ssl->ctx); 2732 } 2733 2734 SSL_CTX * 2735 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2736 { 2737 if (ssl->ctx == ctx) 2738 return (ssl->ctx); 2739 if (ctx == NULL) 2740 ctx = ssl->initial_ctx; 2741 2742 ssl_cert_free(ssl->cert); 2743 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2744 2745 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2746 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2747 ssl->ctx = ctx; 2748 return (ssl->ctx); 2749 } 2750 2751 int 2752 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2753 { 2754 return (X509_STORE_set_default_paths(ctx->cert_store)); 2755 } 2756 2757 int 2758 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2759 const char *CApath) 2760 { 2761 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2762 } 2763 2764 int 2765 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2766 { 2767 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2768 } 2769 2770 void 2771 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2772 { 2773 ssl->internal->info_callback = cb; 2774 } 2775 2776 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2777 { 2778 return (ssl->internal->info_callback); 2779 } 2780 2781 int 2782 SSL_state(const SSL *ssl) 2783 { 2784 return (S3I(ssl)->hs.state); 2785 } 2786 2787 void 2788 SSL_set_state(SSL *ssl, int state) 2789 { 2790 S3I(ssl)->hs.state = state; 2791 } 2792 2793 void 2794 SSL_set_verify_result(SSL *ssl, long arg) 2795 { 2796 ssl->verify_result = arg; 2797 } 2798 2799 long 2800 SSL_get_verify_result(const SSL *ssl) 2801 { 2802 return (ssl->verify_result); 2803 } 2804 2805 int 2806 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2807 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2808 { 2809 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2810 new_func, dup_func, free_func)); 2811 } 2812 2813 int 2814 SSL_set_ex_data(SSL *s, int idx, void *arg) 2815 { 2816 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2817 } 2818 2819 void * 2820 SSL_get_ex_data(const SSL *s, int idx) 2821 { 2822 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2823 } 2824 2825 int 2826 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2827 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2828 { 2829 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2830 new_func, dup_func, free_func)); 2831 } 2832 2833 int 2834 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2835 { 2836 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2837 } 2838 2839 void * 2840 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2841 { 2842 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2843 } 2844 2845 int 2846 ssl_ok(SSL *s) 2847 { 2848 return (1); 2849 } 2850 2851 X509_STORE * 2852 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2853 { 2854 return (ctx->cert_store); 2855 } 2856 2857 void 2858 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2859 { 2860 X509_STORE_free(ctx->cert_store); 2861 ctx->cert_store = store; 2862 } 2863 2864 X509 * 2865 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2866 { 2867 if (ctx->internal->cert == NULL) 2868 return NULL; 2869 2870 return ctx->internal->cert->key->x509; 2871 } 2872 2873 int 2874 SSL_want(const SSL *s) 2875 { 2876 return (s->internal->rwstate); 2877 } 2878 2879 void 2880 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2881 int keylength)) 2882 { 2883 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2884 } 2885 2886 void 2887 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2888 int keylength)) 2889 { 2890 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2891 } 2892 2893 void 2894 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2895 int keylength)) 2896 { 2897 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2898 } 2899 2900 void 2901 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2902 int keylength)) 2903 { 2904 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2905 } 2906 2907 void 2908 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2909 int is_export, int keylength)) 2910 { 2911 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2912 (void (*)(void))ecdh); 2913 } 2914 2915 void 2916 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 2917 int keylength)) 2918 { 2919 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2920 } 2921 2922 2923 void 2924 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 2925 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2926 { 2927 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 2928 (void (*)(void))cb); 2929 } 2930 2931 void 2932 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 2933 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 2934 { 2935 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2936 } 2937 2938 void 2939 SSL_set_debug(SSL *s, int debug) 2940 { 2941 s->internal->debug = debug; 2942 } 2943 2944 int 2945 SSL_cache_hit(SSL *s) 2946 { 2947 return (s->internal->hit); 2948 } 2949 2950 int 2951 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 2952 { 2953 return ctx->internal->min_version; 2954 } 2955 2956 int 2957 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 2958 { 2959 return ssl_version_set_min(ctx->method, version, 2960 ctx->internal->max_version, &ctx->internal->min_version); 2961 } 2962 2963 int 2964 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 2965 { 2966 return ctx->internal->max_version; 2967 } 2968 2969 int 2970 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 2971 { 2972 return ssl_version_set_max(ctx->method, version, 2973 ctx->internal->min_version, &ctx->internal->max_version); 2974 } 2975 2976 int 2977 SSL_get_min_proto_version(SSL *ssl) 2978 { 2979 return ssl->internal->min_version; 2980 } 2981 2982 int 2983 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 2984 { 2985 return ssl_version_set_min(ssl->method, version, 2986 ssl->internal->max_version, &ssl->internal->min_version); 2987 } 2988 int 2989 SSL_get_max_proto_version(SSL *ssl) 2990 { 2991 return ssl->internal->max_version; 2992 } 2993 2994 int 2995 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 2996 { 2997 return ssl_version_set_max(ssl->method, version, 2998 ssl->internal->min_version, &ssl->internal->max_version); 2999 } 3000 3001 static int 3002 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3003 { 3004 SSL_CIPHER const *a = a_; 3005 SSL_CIPHER const *b = b_; 3006 return ssl_cipher_id_cmp(a, b); 3007 } 3008 3009 SSL_CIPHER * 3010 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3011 { 3012 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3013 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3014 } 3015