1 /*! \file ssl/ssl_lib.c 2 * \brief Version independent SSL functions. 3 */ 4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 5 * All rights reserved. 6 * 7 * This package is an SSL implementation written 8 * by Eric Young (eay@cryptsoft.com). 9 * The implementation was written so as to conform with Netscapes SSL. 10 * 11 * This library is free for commercial and non-commercial use as long as 12 * the following conditions are aheared to. The following conditions 13 * apply to all code found in this distribution, be it the RC4, RSA, 14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 15 * included with this distribution is covered by the same copyright terms 16 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 17 * 18 * Copyright remains Eric Young's, and as such any Copyright notices in 19 * the code are not to be removed. 20 * If this package is used in a product, Eric Young should be given attribution 21 * as the author of the parts of the library used. 22 * This can be in the form of a textual message at program startup or 23 * in documentation (online or textual) provided with the package. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 3. All advertising materials mentioning features or use of this software 34 * must display the following acknowledgement: 35 * "This product includes cryptographic software written by 36 * Eric Young (eay@cryptsoft.com)" 37 * The word 'cryptographic' can be left out if the rouines from the library 38 * being used are not cryptographic related :-). 39 * 4. If you include any Windows specific code (or a derivative thereof) from 40 * the apps directory (application code) you must include an acknowledgement: 41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * The licence and distribution terms for any publically available version or 56 * derivative of this code cannot be changed. i.e. this code cannot simply be 57 * copied and put under another distribution licence 58 * [including the GNU Public Licence.] 59 */ 60 /* ==================================================================== 61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 67 * 1. Redistributions of source code must retain the above copyright 68 * notice, this list of conditions and the following disclaimer. 69 * 70 * 2. Redistributions in binary form must reproduce the above copyright 71 * notice, this list of conditions and the following disclaimer in 72 * the documentation and/or other materials provided with the 73 * distribution. 74 * 75 * 3. All advertising materials mentioning features or use of this 76 * software must display the following acknowledgment: 77 * "This product includes software developed by the OpenSSL Project 78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 79 * 80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 81 * endorse or promote products derived from this software without 82 * prior written permission. For written permission, please contact 83 * openssl-core@openssl.org. 84 * 85 * 5. Products derived from this software may not be called "OpenSSL" 86 * nor may "OpenSSL" appear in their names without prior written 87 * permission of the OpenSSL Project. 88 * 89 * 6. Redistributions of any form whatsoever must retain the following 90 * acknowledgment: 91 * "This product includes software developed by the OpenSSL Project 92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 93 * 94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 105 * OF THE POSSIBILITY OF SUCH DAMAGE. 106 * ==================================================================== 107 * 108 * This product includes cryptographic software written by Eric Young 109 * (eay@cryptsoft.com). This product includes software written by Tim 110 * Hudson (tjh@cryptsoft.com). 111 * 112 */ 113 /* ==================================================================== 114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 115 * ECC cipher suite support in OpenSSL originally developed by 116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 117 */ 118 /* ==================================================================== 119 * Copyright 2005 Nokia. All rights reserved. 120 * 121 * The portions of the attached software ("Contribution") is developed by 122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 123 * license. 124 * 125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 127 * support (see RFC 4279) to OpenSSL. 128 * 129 * No patent licenses or other rights except those expressly stated in 130 * the OpenSSL open source license shall be deemed granted or received 131 * expressly, by implication, estoppel, or otherwise. 132 * 133 * No assurances are provided by Nokia that the Contribution does not 134 * infringe the patent or other intellectual property rights of any third 135 * party or that the license provides you with all the necessary rights 136 * to make use of the Contribution. 137 * 138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 142 * OTHERWISE. 143 */ 144 145 #include <stdio.h> 146 #include "ssl_locl.h" 147 #include "kssl_lcl.h" 148 #include <openssl/objects.h> 149 #include <openssl/lhash.h> 150 #include <openssl/x509v3.h> 151 #include <openssl/rand.h> 152 #include <openssl/ocsp.h> 153 #ifndef OPENSSL_NO_DH 154 #include <openssl/dh.h> 155 #endif 156 #ifndef OPENSSL_NO_ENGINE 157 #include <openssl/engine.h> 158 #endif 159 160 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162 SSL3_ENC_METHOD ssl3_undef_enc_method = { 163 /* 164 * Evil casts, but these functions are only called if there's a 165 * library bug. 166 */ 167 (int (*)(SSL *, int))ssl_undefined_function, 168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 169 ssl_undefined_function, 170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 171 (int (*)(SSL*, int))ssl_undefined_function, 172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function, 173 0, /* finish_mac_length */ 174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function, 175 NULL, /* client_finished_label */ 176 0, /* client_finished_label_len */ 177 NULL, /* server_finished_label */ 178 0, /* server_finished_label_len */ 179 (int (*)(int))ssl_undefined_function, 180 (int (*)(SSL *, unsigned char *, size_t, const char *, 181 size_t, const unsigned char *, size_t, 182 int use_context)) ssl_undefined_function, 183 }; 184 185 int 186 SSL_clear(SSL *s) 187 { 188 if (s->method == NULL) { 189 SSLerr(SSL_F_SSL_CLEAR, 190 SSL_R_NO_METHOD_SPECIFIED); 191 return (0); 192 } 193 194 if (ssl_clear_bad_session(s)) { 195 SSL_SESSION_free(s->session); 196 s->session = NULL; 197 } 198 199 s->error = 0; 200 s->hit = 0; 201 s->shutdown = 0; 202 203 if (s->renegotiate) { 204 SSLerr(SSL_F_SSL_CLEAR, 205 ERR_R_INTERNAL_ERROR); 206 return (0); 207 } 208 209 s->type = 0; 210 211 s->state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 212 213 s->version = s->method->version; 214 s->client_version = s->version; 215 s->rwstate = SSL_NOTHING; 216 s->rstate = SSL_ST_READ_HEADER; 217 #if 0 218 s->read_ahead = s->ctx->read_ahead; 219 #endif 220 221 if (s->init_buf != NULL) { 222 BUF_MEM_free(s->init_buf); 223 s->init_buf = NULL; 224 } 225 226 ssl_clear_cipher_ctx(s); 227 ssl_clear_hash_ctx(&s->read_hash); 228 ssl_clear_hash_ctx(&s->write_hash); 229 230 s->first_packet = 0; 231 232 #if 1 233 /* 234 * Check to see if we were changed into a different method, if 235 * so, revert back if we are not doing session-id reuse. 236 */ 237 if (!s->in_handshake && (s->session == NULL) && 238 (s->method != s->ctx->method)) { 239 s->method->ssl_free(s); 240 s->method = s->ctx->method; 241 if (!s->method->ssl_new(s)) 242 return (0); 243 } else 244 #endif 245 s->method->ssl_clear(s); 246 return (1); 247 } 248 249 /* Used to change an SSL_CTXs default SSL method type */ 250 int 251 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 252 { 253 STACK_OF(SSL_CIPHER) *sk; 254 255 ctx->method = meth; 256 257 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 258 &(ctx->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 259 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 260 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, 261 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 262 return (0); 263 } 264 return (1); 265 } 266 267 SSL * 268 SSL_new(SSL_CTX *ctx) 269 { 270 SSL *s; 271 272 if (ctx == NULL) { 273 SSLerr(SSL_F_SSL_NEW, 274 SSL_R_NULL_SSL_CTX); 275 return (NULL); 276 } 277 if (ctx->method == NULL) { 278 SSLerr(SSL_F_SSL_NEW, 279 SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 280 return (NULL); 281 } 282 283 s = calloc(1, sizeof(SSL)); 284 if (s == NULL) 285 goto err; 286 287 288 s->options = ctx->options; 289 s->mode = ctx->mode; 290 s->max_cert_list = ctx->max_cert_list; 291 292 if (ctx->cert != NULL) { 293 /* 294 * Earlier library versions used to copy the pointer to 295 * the CERT, not its contents; only when setting new 296 * parameters for the per-SSL copy, ssl_cert_new would be 297 * called (and the direct reference to the per-SSL_CTX 298 * settings would be lost, but those still were indirectly 299 * accessed for various purposes, and for that reason they 300 * used to be known as s->ctx->default_cert). 301 * Now we don't look at the SSL_CTX's CERT after having 302 * duplicated it once. 303 */ 304 s->cert = ssl_cert_dup(ctx->cert); 305 if (s->cert == NULL) 306 goto err; 307 } else 308 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 309 310 s->read_ahead = ctx->read_ahead; 311 s->msg_callback = ctx->msg_callback; 312 s->msg_callback_arg = ctx->msg_callback_arg; 313 s->verify_mode = ctx->verify_mode; 314 #if 0 315 s->verify_depth = ctx->verify_depth; 316 #endif 317 s->sid_ctx_length = ctx->sid_ctx_length; 318 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 319 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 320 s->verify_callback = ctx->default_verify_callback; 321 s->generate_session_id = ctx->generate_session_id; 322 323 s->param = X509_VERIFY_PARAM_new(); 324 if (!s->param) 325 goto err; 326 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 327 #if 0 328 s->purpose = ctx->purpose; 329 s->trust = ctx->trust; 330 #endif 331 s->quiet_shutdown = ctx->quiet_shutdown; 332 s->max_send_fragment = ctx->max_send_fragment; 333 334 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 335 s->ctx = ctx; 336 #ifndef OPENSSL_NO_TLSEXT 337 s->tlsext_debug_cb = 0; 338 s->tlsext_debug_arg = NULL; 339 s->tlsext_ticket_expected = 0; 340 s->tlsext_status_type = -1; 341 s->tlsext_status_expected = 0; 342 s->tlsext_ocsp_ids = NULL; 343 s->tlsext_ocsp_exts = NULL; 344 s->tlsext_ocsp_resp = NULL; 345 s->tlsext_ocsp_resplen = -1; 346 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 347 s->initial_ctx = ctx; 348 # ifndef OPENSSL_NO_NEXTPROTONEG 349 s->next_proto_negotiated = NULL; 350 # endif 351 #endif 352 353 s->verify_result = X509_V_OK; 354 355 s->method = ctx->method; 356 357 if (!s->method->ssl_new(s)) 358 goto err; 359 360 s->references = 1; 361 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1; 362 363 SSL_clear(s); 364 365 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 366 367 #ifndef OPENSSL_NO_PSK 368 s->psk_client_callback = ctx->psk_client_callback; 369 s->psk_server_callback = ctx->psk_server_callback; 370 #endif 371 372 return (s); 373 err: 374 if (s != NULL) { 375 if (s->cert != NULL) 376 ssl_cert_free(s->cert); 377 if (s->ctx != NULL) 378 SSL_CTX_free(s->ctx); /* decrement reference count */ 379 free(s); 380 } 381 SSLerr(SSL_F_SSL_NEW, 382 ERR_R_MALLOC_FAILURE); 383 return (NULL); 384 } 385 386 int 387 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 388 unsigned int sid_ctx_len) 389 { 390 if (sid_ctx_len > sizeof ctx->sid_ctx) { 391 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT, 392 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 393 return (0); 394 } 395 ctx->sid_ctx_length = sid_ctx_len; 396 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 397 398 return (1); 399 } 400 401 int 402 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 403 unsigned int sid_ctx_len) 404 { 405 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 406 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT, 407 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 408 return (0); 409 } 410 ssl->sid_ctx_length = sid_ctx_len; 411 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 412 413 return (1); 414 } 415 416 int 417 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 418 { 419 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 420 ctx->generate_session_id = cb; 421 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 422 return (1); 423 } 424 425 int 426 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 427 { 428 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 429 ssl->generate_session_id = cb; 430 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 431 return (1); 432 } 433 434 int 435 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 436 unsigned int id_len) 437 { 438 /* 439 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 440 * shows how we can "construct" a session to give us the desired 441 * check - ie. to find if there's a session in the hash table 442 * that would conflict with any new session built out of this 443 * id/id_len and the ssl_version in use by this SSL. 444 */ 445 SSL_SESSION r, *p; 446 447 if (id_len > sizeof r.session_id) 448 return (0); 449 450 r.ssl_version = ssl->version; 451 r.session_id_length = id_len; 452 memcpy(r.session_id, id, id_len); 453 454 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 455 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 456 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 457 return (p != NULL); 458 } 459 460 int 461 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 462 { 463 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 464 } 465 466 int 467 SSL_set_purpose(SSL *s, int purpose) 468 { 469 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 470 } 471 472 int 473 SSL_CTX_set_trust(SSL_CTX *s, int trust) 474 { 475 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 476 } 477 478 int 479 SSL_set_trust(SSL *s, int trust) 480 { 481 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 482 } 483 484 int 485 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 486 { 487 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 488 } 489 490 int 491 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 492 { 493 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 494 } 495 496 void 497 SSL_free(SSL *s) 498 { 499 int i; 500 501 if (s == NULL) 502 return; 503 504 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 505 if (i > 0) 506 return; 507 508 if (s->param) 509 X509_VERIFY_PARAM_free(s->param); 510 511 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 512 513 if (s->bbio != NULL) { 514 /* If the buffering BIO is in place, pop it off */ 515 if (s->bbio == s->wbio) { 516 s->wbio = BIO_pop(s->wbio); 517 } 518 BIO_free(s->bbio); 519 s->bbio = NULL; 520 } 521 if (s->rbio != NULL) 522 BIO_free_all(s->rbio); 523 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 524 BIO_free_all(s->wbio); 525 526 if (s->init_buf != NULL) 527 BUF_MEM_free(s->init_buf); 528 529 /* add extra stuff */ 530 if (s->cipher_list != NULL) 531 sk_SSL_CIPHER_free(s->cipher_list); 532 if (s->cipher_list_by_id != NULL) 533 sk_SSL_CIPHER_free(s->cipher_list_by_id); 534 535 /* Make the next call work :-) */ 536 if (s->session != NULL) { 537 ssl_clear_bad_session(s); 538 SSL_SESSION_free(s->session); 539 } 540 541 ssl_clear_cipher_ctx(s); 542 ssl_clear_hash_ctx(&s->read_hash); 543 ssl_clear_hash_ctx(&s->write_hash); 544 545 if (s->cert != NULL) 546 ssl_cert_free(s->cert); 547 /* Free up if allocated */ 548 549 #ifndef OPENSSL_NO_TLSEXT 550 if (s->tlsext_hostname) 551 free(s->tlsext_hostname); 552 if (s->initial_ctx) 553 SSL_CTX_free(s->initial_ctx); 554 #ifndef OPENSSL_NO_EC 555 if (s->tlsext_ecpointformatlist) 556 free(s->tlsext_ecpointformatlist); 557 if (s->tlsext_ellipticcurvelist) 558 free(s->tlsext_ellipticcurvelist); 559 #endif /* OPENSSL_NO_EC */ 560 if (s->tlsext_opaque_prf_input) 561 free(s->tlsext_opaque_prf_input); 562 if (s->tlsext_ocsp_exts) 563 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 564 X509_EXTENSION_free); 565 if (s->tlsext_ocsp_ids) 566 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 567 if (s->tlsext_ocsp_resp) 568 free(s->tlsext_ocsp_resp); 569 #endif 570 571 if (s->client_CA != NULL) 572 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free); 573 574 if (s->method != NULL) 575 s->method->ssl_free(s); 576 577 if (s->ctx) 578 SSL_CTX_free(s->ctx); 579 580 581 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 582 if (s->next_proto_negotiated) 583 free(s->next_proto_negotiated); 584 #endif 585 586 #ifndef OPENSSL_NO_SRTP 587 if (s->srtp_profiles) 588 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 589 #endif 590 591 free(s); 592 } 593 594 void 595 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 596 { 597 /* If the output buffering BIO is still in place, remove it */ 598 if (s->bbio != NULL) { 599 if (s->wbio == s->bbio) { 600 s->wbio = s->wbio->next_bio; 601 s->bbio->next_bio = NULL; 602 } 603 } 604 if ((s->rbio != NULL) && (s->rbio != rbio)) 605 BIO_free_all(s->rbio); 606 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 607 BIO_free_all(s->wbio); 608 s->rbio = rbio; 609 s->wbio = wbio; 610 } 611 612 BIO * 613 SSL_get_rbio(const SSL *s) 614 { 615 return (s->rbio); 616 } 617 618 BIO * 619 SSL_get_wbio(const SSL *s) 620 { 621 return (s->wbio); 622 } 623 624 int 625 SSL_get_fd(const SSL *s) 626 { 627 return (SSL_get_rfd(s)); 628 } 629 630 int 631 SSL_get_rfd(const SSL *s) 632 { 633 int ret = -1; 634 BIO *b, *r; 635 636 b = SSL_get_rbio(s); 637 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 638 if (r != NULL) 639 BIO_get_fd(r, &ret); 640 return (ret); 641 } 642 643 int 644 SSL_get_wfd(const SSL *s) 645 { 646 int ret = -1; 647 BIO *b, *r; 648 649 b = SSL_get_wbio(s); 650 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 651 if (r != NULL) 652 BIO_get_fd(r, &ret); 653 return (ret); 654 } 655 656 int 657 SSL_set_fd(SSL *s, int fd) 658 { 659 int ret = 0; 660 BIO *bio = NULL; 661 662 bio = BIO_new(BIO_s_socket()); 663 664 if (bio == NULL) { 665 SSLerr(SSL_F_SSL_SET_FD, 666 ERR_R_BUF_LIB); 667 goto err; 668 } 669 BIO_set_fd(bio, fd, BIO_NOCLOSE); 670 SSL_set_bio(s, bio, bio); 671 ret = 1; 672 err: 673 return (ret); 674 } 675 676 int 677 SSL_set_wfd(SSL *s, int fd) 678 { 679 int ret = 0; 680 BIO *bio = NULL; 681 682 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 683 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 684 bio = BIO_new(BIO_s_socket()); 685 686 if (bio == NULL) { 687 SSLerr(SSL_F_SSL_SET_WFD, 688 ERR_R_BUF_LIB); 689 goto err; 690 } 691 BIO_set_fd(bio, fd, BIO_NOCLOSE); 692 SSL_set_bio(s, SSL_get_rbio(s), bio); 693 } else 694 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 695 ret = 1; 696 err: 697 return (ret); 698 } 699 700 int 701 SSL_set_rfd(SSL *s, int fd) 702 { 703 int ret = 0; 704 BIO *bio = NULL; 705 706 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 707 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 708 bio = BIO_new(BIO_s_socket()); 709 710 if (bio == NULL) { 711 SSLerr(SSL_F_SSL_SET_RFD, 712 ERR_R_BUF_LIB); 713 goto err; 714 } 715 BIO_set_fd(bio, fd, BIO_NOCLOSE); 716 SSL_set_bio(s, bio, SSL_get_wbio(s)); 717 } else 718 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 719 ret = 1; 720 err: 721 return (ret); 722 } 723 724 725 /* return length of latest Finished message we sent, copy to 'buf' */ 726 size_t 727 SSL_get_finished(const SSL *s, void *buf, size_t count) 728 { 729 size_t ret = 0; 730 731 if (s->s3 != NULL) { 732 ret = s->s3->tmp.finish_md_len; 733 if (count > ret) 734 count = ret; 735 memcpy(buf, s->s3->tmp.finish_md, count); 736 } 737 return (ret); 738 } 739 740 /* return length of latest Finished message we expected, copy to 'buf' */ 741 size_t 742 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 743 { 744 size_t ret = 0; 745 746 if (s->s3 != NULL) { 747 ret = s->s3->tmp.peer_finish_md_len; 748 if (count > ret) 749 count = ret; 750 memcpy(buf, s->s3->tmp.peer_finish_md, count); 751 } 752 return (ret); 753 } 754 755 756 int 757 SSL_get_verify_mode(const SSL *s) 758 { 759 return (s->verify_mode); 760 } 761 762 int 763 SSL_get_verify_depth(const SSL *s) 764 { 765 return (X509_VERIFY_PARAM_get_depth(s->param)); 766 } 767 768 int 769 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 770 { 771 return (s->verify_callback); 772 } 773 774 int 775 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 776 { 777 return (ctx->verify_mode); 778 } 779 780 int 781 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 782 { 783 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 784 } 785 786 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 787 { 788 return (ctx->default_verify_callback); 789 } 790 791 void 792 SSL_set_verify(SSL *s, int mode, 793 int (*callback)(int ok, X509_STORE_CTX *ctx)) 794 { 795 s->verify_mode = mode; 796 if (callback != NULL) 797 s->verify_callback = callback; 798 } 799 800 void 801 SSL_set_verify_depth(SSL *s, int depth) 802 { 803 X509_VERIFY_PARAM_set_depth(s->param, depth); 804 } 805 806 void 807 SSL_set_read_ahead(SSL *s, int yes) 808 { 809 s->read_ahead = yes; 810 } 811 812 int 813 SSL_get_read_ahead(const SSL *s) 814 { 815 return (s->read_ahead); 816 } 817 818 int 819 SSL_pending(const SSL *s) 820 { 821 /* 822 * SSL_pending cannot work properly if read-ahead is enabled 823 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 824 * and it is impossible to fix since SSL_pending cannot report 825 * errors that may be observed while scanning the new data. 826 * (Note that SSL_pending() is often used as a boolean value, 827 * so we'd better not return -1.) 828 */ 829 return (s->method->ssl_pending(s)); 830 } 831 832 X509 * 833 SSL_get_peer_certificate(const SSL *s) 834 { 835 X509 *r; 836 837 if ((s == NULL) || (s->session == NULL)) 838 r = NULL; 839 else 840 r = s->session->peer; 841 842 if (r == NULL) 843 return (r); 844 845 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 846 847 return (r); 848 } 849 850 STACK_OF(X509) * 851 SSL_get_peer_cert_chain(const SSL *s) 852 { 853 STACK_OF(X509) *r; 854 855 if ((s == NULL) || (s->session == NULL) || 856 (s->session->sess_cert == NULL)) 857 r = NULL; 858 else 859 r = s->session->sess_cert->cert_chain; 860 861 /* 862 * If we are a client, cert_chain includes the peer's own 863 * certificate; 864 * if we are a server, it does not. 865 */ 866 return (r); 867 } 868 869 /* 870 * Now in theory, since the calling process own 't' it should be safe to 871 * modify. We need to be able to read f without being hassled 872 */ 873 void 874 SSL_copy_session_id(SSL *t, const SSL *f) 875 { 876 CERT *tmp; 877 878 /* Do we need to to SSL locking? */ 879 SSL_set_session(t, SSL_get_session(f)); 880 881 /* 882 * What if we are setup as SSLv2 but want to talk SSLv3 or 883 * vice-versa. 884 */ 885 if (t->method != f->method) { 886 t->method->ssl_free(t); /* cleanup current */ 887 t->method=f->method; /* change method */ 888 t->method->ssl_new(t); /* setup new */ 889 } 890 891 tmp = t->cert; 892 if (f->cert != NULL) { 893 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 894 t->cert = f->cert; 895 } else 896 t->cert = NULL; 897 if (tmp != NULL) 898 ssl_cert_free(tmp); 899 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 900 } 901 902 /* Fix this so it checks all the valid key/cert options */ 903 int 904 SSL_CTX_check_private_key(const SSL_CTX *ctx) 905 { 906 if ((ctx == NULL) || (ctx->cert == NULL) || 907 (ctx->cert->key->x509 == NULL)) { 908 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 909 SSL_R_NO_CERTIFICATE_ASSIGNED); 910 return (0); 911 } 912 if (ctx->cert->key->privatekey == NULL) { 913 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, 914 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 915 return (0); 916 } 917 return (X509_check_private_key(ctx->cert->key->x509, 918 ctx->cert->key->privatekey)); 919 } 920 921 /* Fix this function so that it takes an optional type parameter */ 922 int 923 SSL_check_private_key(const SSL *ssl) 924 { 925 if (ssl == NULL) { 926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 927 ERR_R_PASSED_NULL_PARAMETER); 928 return (0); 929 } 930 if (ssl->cert == NULL) { 931 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 932 SSL_R_NO_CERTIFICATE_ASSIGNED); 933 return (0); 934 } 935 if (ssl->cert->key->x509 == NULL) { 936 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 937 SSL_R_NO_CERTIFICATE_ASSIGNED); 938 return (0); 939 } 940 if (ssl->cert->key->privatekey == NULL) { 941 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, 942 SSL_R_NO_PRIVATE_KEY_ASSIGNED); 943 return (0); 944 } 945 return (X509_check_private_key(ssl->cert->key->x509, 946 ssl->cert->key->privatekey)); 947 } 948 949 int 950 SSL_accept(SSL *s) 951 { 952 if (s->handshake_func == 0) 953 SSL_set_accept_state(s); /* Not properly initialized yet */ 954 955 return (s->method->ssl_accept(s)); 956 } 957 958 int 959 SSL_connect(SSL *s) 960 { 961 if (s->handshake_func == 0) 962 SSL_set_connect_state(s); /* Not properly initialized yet */ 963 964 return (s->method->ssl_connect(s)); 965 } 966 967 long 968 SSL_get_default_timeout(const SSL *s) 969 { 970 return (s->method->get_timeout()); 971 } 972 973 int 974 SSL_read(SSL *s, void *buf, int num) 975 { 976 if (s->handshake_func == 0) { 977 SSLerr(SSL_F_SSL_READ, 978 SSL_R_UNINITIALIZED); 979 return (-1); 980 } 981 982 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 983 s->rwstate = SSL_NOTHING; 984 return (0); 985 } 986 return (s->method->ssl_read(s, buf, num)); 987 } 988 989 int 990 SSL_peek(SSL *s, void *buf, int num) 991 { 992 if (s->handshake_func == 0) { 993 SSLerr(SSL_F_SSL_PEEK, 994 SSL_R_UNINITIALIZED); 995 return (-1); 996 } 997 998 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) { 999 return (0); 1000 } 1001 return (s->method->ssl_peek(s, buf, num)); 1002 } 1003 1004 int 1005 SSL_write(SSL *s, const void *buf, int num) 1006 { 1007 if (s->handshake_func == 0) { 1008 SSLerr(SSL_F_SSL_WRITE, 1009 SSL_R_UNINITIALIZED); 1010 return (-1); 1011 } 1012 1013 if (s->shutdown & SSL_SENT_SHUTDOWN) { 1014 s->rwstate = SSL_NOTHING; 1015 SSLerr(SSL_F_SSL_WRITE, 1016 SSL_R_PROTOCOL_IS_SHUTDOWN); 1017 return (-1); 1018 } 1019 return (s->method->ssl_write(s, buf, num)); 1020 } 1021 1022 int 1023 SSL_shutdown(SSL *s) 1024 { 1025 /* 1026 * Note that this function behaves differently from what one might 1027 * expect. Return values are 0 for no success (yet), 1028 * 1 for success; but calling it once is usually not enough, 1029 * even if blocking I/O is used (see ssl3_shutdown). 1030 */ 1031 1032 if (s->handshake_func == 0) { 1033 SSLerr(SSL_F_SSL_SHUTDOWN, 1034 SSL_R_UNINITIALIZED); 1035 return (-1); 1036 } 1037 1038 if ((s != NULL) && !SSL_in_init(s)) 1039 return (s->method->ssl_shutdown(s)); 1040 else 1041 return (1); 1042 } 1043 1044 int 1045 SSL_renegotiate(SSL *s) 1046 { 1047 if (s->renegotiate == 0) 1048 s->renegotiate = 1; 1049 1050 s->new_session = 1; 1051 1052 return (s->method->ssl_renegotiate(s)); 1053 } 1054 1055 int 1056 SSL_renegotiate_abbreviated(SSL *s) 1057 { 1058 if (s->renegotiate == 0) 1059 s->renegotiate = 1; 1060 1061 s->new_session = 0; 1062 1063 return (s->method->ssl_renegotiate(s)); 1064 } 1065 1066 int 1067 SSL_renegotiate_pending(SSL *s) 1068 { 1069 /* 1070 * Becomes true when negotiation is requested; 1071 * false again once a handshake has finished. 1072 */ 1073 return (s->renegotiate != 0); 1074 } 1075 1076 long 1077 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1078 { 1079 long l; 1080 1081 switch (cmd) { 1082 case SSL_CTRL_GET_READ_AHEAD: 1083 return (s->read_ahead); 1084 case SSL_CTRL_SET_READ_AHEAD: 1085 l = s->read_ahead; 1086 s->read_ahead = larg; 1087 return (l); 1088 1089 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1090 s->msg_callback_arg = parg; 1091 return (1); 1092 1093 case SSL_CTRL_OPTIONS: 1094 return (s->options|=larg); 1095 case SSL_CTRL_CLEAR_OPTIONS: 1096 return (s->options&=~larg); 1097 case SSL_CTRL_MODE: 1098 return (s->mode|=larg); 1099 case SSL_CTRL_CLEAR_MODE: 1100 return (s->mode &=~larg); 1101 case SSL_CTRL_GET_MAX_CERT_LIST: 1102 return (s->max_cert_list); 1103 case SSL_CTRL_SET_MAX_CERT_LIST: 1104 l = s->max_cert_list; 1105 s->max_cert_list = larg; 1106 return (l); 1107 case SSL_CTRL_SET_MTU: 1108 #ifndef OPENSSL_NO_DTLS1 1109 if (larg < (long)dtls1_min_mtu()) 1110 return (0); 1111 #endif 1112 1113 if (SSL_version(s) == DTLS1_VERSION || 1114 SSL_version(s) == DTLS1_BAD_VER) { 1115 s->d1->mtu = larg; 1116 return (larg); 1117 } 1118 return (0); 1119 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1120 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1121 return (0); 1122 s->max_send_fragment = larg; 1123 return (1); 1124 case SSL_CTRL_GET_RI_SUPPORT: 1125 if (s->s3) 1126 return (s->s3->send_connection_binding); 1127 else return (0); 1128 default: 1129 return (s->method->ssl_ctrl(s, cmd, larg, parg)); 1130 } 1131 } 1132 1133 long 1134 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1135 { 1136 switch (cmd) { 1137 case SSL_CTRL_SET_MSG_CALLBACK: 1138 s->msg_callback = (void (*)(int write_p, int version, 1139 int content_type, const void *buf, size_t len, 1140 SSL *ssl, void *arg))(fp); 1141 return (1); 1142 1143 default: 1144 return (s->method->ssl_callback_ctrl(s, cmd, fp)); 1145 } 1146 } 1147 1148 LHASH_OF(SSL_SESSION) * 1149 SSL_CTX_sessions(SSL_CTX *ctx) 1150 { 1151 return (ctx->sessions); 1152 } 1153 1154 long 1155 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1156 { 1157 long l; 1158 1159 switch (cmd) { 1160 case SSL_CTRL_GET_READ_AHEAD: 1161 return (ctx->read_ahead); 1162 case SSL_CTRL_SET_READ_AHEAD: 1163 l = ctx->read_ahead; 1164 ctx->read_ahead = larg; 1165 return (l); 1166 1167 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1168 ctx->msg_callback_arg = parg; 1169 return (1); 1170 1171 case SSL_CTRL_GET_MAX_CERT_LIST: 1172 return (ctx->max_cert_list); 1173 case SSL_CTRL_SET_MAX_CERT_LIST: 1174 l = ctx->max_cert_list; 1175 ctx->max_cert_list = larg; 1176 return (l); 1177 1178 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1179 l = ctx->session_cache_size; 1180 ctx->session_cache_size = larg; 1181 return (l); 1182 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1183 return (ctx->session_cache_size); 1184 case SSL_CTRL_SET_SESS_CACHE_MODE: 1185 l = ctx->session_cache_mode; 1186 ctx->session_cache_mode = larg; 1187 return (l); 1188 case SSL_CTRL_GET_SESS_CACHE_MODE: 1189 return (ctx->session_cache_mode); 1190 1191 case SSL_CTRL_SESS_NUMBER: 1192 return (lh_SSL_SESSION_num_items(ctx->sessions)); 1193 case SSL_CTRL_SESS_CONNECT: 1194 return (ctx->stats.sess_connect); 1195 case SSL_CTRL_SESS_CONNECT_GOOD: 1196 return (ctx->stats.sess_connect_good); 1197 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1198 return (ctx->stats.sess_connect_renegotiate); 1199 case SSL_CTRL_SESS_ACCEPT: 1200 return (ctx->stats.sess_accept); 1201 case SSL_CTRL_SESS_ACCEPT_GOOD: 1202 return (ctx->stats.sess_accept_good); 1203 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1204 return (ctx->stats.sess_accept_renegotiate); 1205 case SSL_CTRL_SESS_HIT: 1206 return (ctx->stats.sess_hit); 1207 case SSL_CTRL_SESS_CB_HIT: 1208 return (ctx->stats.sess_cb_hit); 1209 case SSL_CTRL_SESS_MISSES: 1210 return (ctx->stats.sess_miss); 1211 case SSL_CTRL_SESS_TIMEOUTS: 1212 return (ctx->stats.sess_timeout); 1213 case SSL_CTRL_SESS_CACHE_FULL: 1214 return (ctx->stats.sess_cache_full); 1215 case SSL_CTRL_OPTIONS: 1216 return (ctx->options|=larg); 1217 case SSL_CTRL_CLEAR_OPTIONS: 1218 return (ctx->options&=~larg); 1219 case SSL_CTRL_MODE: 1220 return (ctx->mode|=larg); 1221 case SSL_CTRL_CLEAR_MODE: 1222 return (ctx->mode&=~larg); 1223 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1224 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1225 return (0); 1226 ctx->max_send_fragment = larg; 1227 return (1); 1228 default: 1229 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg)); 1230 } 1231 } 1232 1233 long 1234 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1235 { 1236 switch (cmd) { 1237 case SSL_CTRL_SET_MSG_CALLBACK: 1238 ctx->msg_callback = (void (*)(int write_p, int version, 1239 int content_type, const void *buf, size_t len, SSL *ssl, 1240 void *arg))(fp); 1241 return (1); 1242 1243 default: 1244 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp)); 1245 } 1246 } 1247 1248 int 1249 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1250 { 1251 long l; 1252 1253 l = a->id - b->id; 1254 if (l == 0L) 1255 return (0); 1256 else 1257 return ((l > 0) ? 1:-1); 1258 } 1259 1260 int 1261 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1262 const SSL_CIPHER * const *bp) 1263 { 1264 long l; 1265 1266 l = (*ap)->id - (*bp)->id; 1267 if (l == 0L) 1268 return (0); 1269 else 1270 return ((l > 0) ? 1:-1); 1271 } 1272 1273 /* 1274 * Return a STACK of the ciphers available for the SSL and in order of 1275 * preference. 1276 */ 1277 STACK_OF(SSL_CIPHER) * 1278 SSL_get_ciphers(const SSL *s) 1279 { 1280 if (s != NULL) { 1281 if (s->cipher_list != NULL) { 1282 return (s->cipher_list); 1283 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1284 return (s->ctx->cipher_list); 1285 } 1286 } 1287 return (NULL); 1288 } 1289 1290 /* 1291 * Return a STACK of the ciphers available for the SSL and in order of 1292 * algorithm id. 1293 */ 1294 STACK_OF(SSL_CIPHER) * 1295 ssl_get_ciphers_by_id(SSL *s) 1296 { 1297 if (s != NULL) { 1298 if (s->cipher_list_by_id != NULL) { 1299 return (s->cipher_list_by_id); 1300 } else if ((s->ctx != NULL) && 1301 (s->ctx->cipher_list_by_id != NULL)) { 1302 return (s->ctx->cipher_list_by_id); 1303 } 1304 } 1305 return (NULL); 1306 } 1307 1308 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1309 const char * 1310 SSL_get_cipher_list(const SSL *s, int n) 1311 { 1312 SSL_CIPHER *c; 1313 STACK_OF(SSL_CIPHER) *sk; 1314 1315 if (s == NULL) 1316 return (NULL); 1317 sk = SSL_get_ciphers(s); 1318 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1319 return (NULL); 1320 c = sk_SSL_CIPHER_value(sk, n); 1321 if (c == NULL) 1322 return (NULL); 1323 return (c->name); 1324 } 1325 1326 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1327 int 1328 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1329 { 1330 STACK_OF(SSL_CIPHER) *sk; 1331 1332 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1333 &ctx->cipher_list_by_id, str); 1334 /* 1335 * ssl_create_cipher_list may return an empty stack if it 1336 * was unable to find a cipher matching the given rule string 1337 * (for example if the rule string specifies a cipher which 1338 * has been disabled). This is not an error as far as 1339 * ssl_create_cipher_list is concerned, and hence 1340 * ctx->cipher_list and ctx->cipher_list_by_id has been 1341 * updated. 1342 */ 1343 if (sk == NULL) 1344 return (0); 1345 else if (sk_SSL_CIPHER_num(sk) == 0) { 1346 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, 1347 SSL_R_NO_CIPHER_MATCH); 1348 return (0); 1349 } 1350 return (1); 1351 } 1352 1353 /* Specify the ciphers to be used by the SSL. */ 1354 int 1355 SSL_set_cipher_list(SSL *s, const char *str) 1356 { 1357 STACK_OF(SSL_CIPHER) *sk; 1358 1359 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1360 &s->cipher_list_by_id, str); 1361 /* see comment in SSL_CTX_set_cipher_list */ 1362 if (sk == NULL) 1363 return (0); 1364 else if (sk_SSL_CIPHER_num(sk) == 0) { 1365 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, 1366 SSL_R_NO_CIPHER_MATCH); 1367 return (0); 1368 } 1369 return (1); 1370 } 1371 1372 /* works well for SSLv2, not so good for SSLv3 */ 1373 char * 1374 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1375 { 1376 char *end; 1377 STACK_OF(SSL_CIPHER) *sk; 1378 SSL_CIPHER *c; 1379 size_t curlen = 0; 1380 int i; 1381 1382 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1383 (len < 2)) 1384 return (NULL); 1385 1386 sk = s->session->ciphers; 1387 buf[0] = '\0'; 1388 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1389 c = sk_SSL_CIPHER_value(sk, i); 1390 end = buf + curlen; 1391 if (strlcat(buf, c->name, len) >= len || 1392 (curlen = strlcat(buf, ":", len)) >= len) { 1393 /* remove truncated cipher from list */ 1394 *end = '\0'; 1395 break; 1396 } 1397 } 1398 /* remove trailing colon */ 1399 if ((end = strrchr(buf, ':')) != NULL) 1400 *end = '\0'; 1401 return (buf); 1402 } 1403 1404 int 1405 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p, 1406 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1407 { 1408 int i, j = 0; 1409 SSL_CIPHER *c; 1410 unsigned char *q; 1411 1412 if (sk == NULL) 1413 return (0); 1414 q = p; 1415 1416 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1417 c = sk_SSL_CIPHER_value(sk, i); 1418 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1419 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1420 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1421 continue; 1422 #ifndef OPENSSL_NO_PSK 1423 /* with PSK there must be client callback set */ 1424 if (((c->algorithm_mkey & SSL_kPSK) || 1425 (c->algorithm_auth & SSL_aPSK)) && 1426 s->psk_client_callback == NULL) 1427 continue; 1428 #endif /* OPENSSL_NO_PSK */ 1429 j = put_cb ? put_cb(c, p) : ssl_put_cipher_by_char(s, c, p); 1430 p += j; 1431 } 1432 /* 1433 * If p == q, no ciphers and caller indicates an error. Otherwise 1434 * add SCSV if not renegotiating. 1435 */ 1436 if (p != q && !s->renegotiate) { 1437 static SSL_CIPHER scsv = { 1438 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1439 }; 1440 j = put_cb ? put_cb(&scsv, p) : 1441 ssl_put_cipher_by_char(s, &scsv, p); 1442 p += j; 1443 #ifdef OPENSSL_RI_DEBUG 1444 fprintf(stderr, "SCSV sent by client\n"); 1445 #endif 1446 } 1447 1448 return (p - q); 1449 } 1450 1451 STACK_OF(SSL_CIPHER) * 1452 ssl_bytes_to_cipher_list(SSL *s, unsigned char *p, int num, 1453 STACK_OF(SSL_CIPHER) **skp) 1454 { 1455 const SSL_CIPHER *c; 1456 STACK_OF(SSL_CIPHER) *sk; 1457 int i, n; 1458 1459 if (s->s3) 1460 s->s3->send_connection_binding = 0; 1461 1462 n = ssl_put_cipher_by_char(s, NULL, NULL); 1463 if ((num % n) != 0) { 1464 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1465 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1466 return (NULL); 1467 } 1468 if ((skp == NULL) || (*skp == NULL)) 1469 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1470 else { 1471 sk= *skp; 1472 sk_SSL_CIPHER_zero(sk); 1473 } 1474 1475 for (i = 0; i < num; i += n) { 1476 /* Check for SCSV */ 1477 if (s->s3 && (n != 3 || !p[0]) && 1478 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1479 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) { 1480 /* SCSV fatal if renegotiating */ 1481 if (s->renegotiate) { 1482 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1483 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1484 ssl3_send_alert(s, SSL3_AL_FATAL, 1485 SSL_AD_HANDSHAKE_FAILURE); 1486 1487 goto err; 1488 } 1489 s->s3->send_connection_binding = 1; 1490 p += n; 1491 #ifdef OPENSSL_RI_DEBUG 1492 fprintf(stderr, "SCSV received by server\n"); 1493 #endif 1494 continue; 1495 } 1496 1497 c = ssl_get_cipher_by_char(s, p); 1498 p += n; 1499 if (c != NULL) { 1500 if (!sk_SSL_CIPHER_push(sk, c)) { 1501 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, 1502 ERR_R_MALLOC_FAILURE); 1503 goto err; 1504 } 1505 } 1506 } 1507 1508 if (skp != NULL) 1509 *skp = sk; 1510 return (sk); 1511 err: 1512 if ((skp == NULL) || (*skp == NULL)) 1513 sk_SSL_CIPHER_free(sk); 1514 return (NULL); 1515 } 1516 1517 1518 #ifndef OPENSSL_NO_TLSEXT 1519 /* 1520 * Return a servername extension value if provided in Client Hello, or NULL. 1521 * So far, only host_name types are defined (RFC 3546). 1522 */ 1523 const char * 1524 SSL_get_servername(const SSL *s, const int type) 1525 { 1526 if (type != TLSEXT_NAMETYPE_host_name) 1527 return (NULL); 1528 1529 return (s->session && !s->tlsext_hostname ? 1530 s->session->tlsext_hostname : 1531 s->tlsext_hostname); 1532 } 1533 1534 int 1535 SSL_get_servername_type(const SSL *s) 1536 { 1537 if (s->session && 1538 (!s->tlsext_hostname ? 1539 s->session->tlsext_hostname : s->tlsext_hostname)) 1540 return (TLSEXT_NAMETYPE_host_name); 1541 return (-1); 1542 } 1543 1544 # ifndef OPENSSL_NO_NEXTPROTONEG 1545 /* 1546 * SSL_select_next_proto implements the standard protocol selection. It is 1547 * expected that this function is called from the callback set by 1548 * SSL_CTX_set_next_proto_select_cb. 1549 * 1550 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1551 * strings. The length byte itself is not included in the length. A byte 1552 * string of length 0 is invalid. No byte string may be truncated. 1553 * 1554 * The current, but experimental algorithm for selecting the protocol is: 1555 * 1556 * 1) If the server doesn't support NPN then this is indicated to the 1557 * callback. In this case, the client application has to abort the connection 1558 * or have a default application level protocol. 1559 * 1560 * 2) If the server supports NPN, but advertises an empty list then the 1561 * client selects the first protcol in its list, but indicates via the 1562 * API that this fallback case was enacted. 1563 * 1564 * 3) Otherwise, the client finds the first protocol in the server's list 1565 * that it supports and selects this protocol. This is because it's 1566 * assumed that the server has better information about which protocol 1567 * a client should use. 1568 * 1569 * 4) If the client doesn't support any of the server's advertised 1570 * protocols, then this is treated the same as case 2. 1571 * 1572 * It returns either 1573 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1574 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1575 */ 1576 int 1577 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1578 const unsigned char *server, unsigned int server_len, 1579 const unsigned char *client, unsigned int client_len) 1580 { 1581 unsigned int i, j; 1582 const unsigned char *result; 1583 int status = OPENSSL_NPN_UNSUPPORTED; 1584 1585 /* 1586 * For each protocol in server preference order, 1587 * see if we support it. 1588 */ 1589 for (i = 0; i < server_len; ) { 1590 for (j = 0; j < client_len; ) { 1591 if (server[i] == client[j] && 1592 memcmp(&server[i + 1], 1593 &client[j + 1], server[i]) == 0) { 1594 /* We found a match */ 1595 result = &server[i]; 1596 status = OPENSSL_NPN_NEGOTIATED; 1597 goto found; 1598 } 1599 j += client[j]; 1600 j++; 1601 } 1602 i += server[i]; 1603 i++; 1604 } 1605 1606 /* There's no overlap between our protocols and the server's list. */ 1607 result = client; 1608 status = OPENSSL_NPN_NO_OVERLAP; 1609 1610 found: 1611 *out = (unsigned char *) result + 1; 1612 *outlen = result[0]; 1613 return (status); 1614 } 1615 1616 /* 1617 * SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1618 * requested protocol for this connection and returns 0. If the client didn't 1619 * request any protocol, then *data is set to NULL. 1620 * 1621 * Note that the client can request any protocol it chooses. The value returned 1622 * from this function need not be a member of the list of supported protocols 1623 * provided by the callback. 1624 */ 1625 void 1626 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1627 unsigned *len) 1628 { 1629 *data = s->next_proto_negotiated; 1630 if (!*data) { 1631 *len = 0; 1632 } else { 1633 *len = s->next_proto_negotiated_len; 1634 } 1635 } 1636 1637 /* 1638 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1639 * TLS server needs a list of supported protocols for Next Protocol 1640 * Negotiation. The returned list must be in wire format. The list is returned 1641 * by setting |out| to point to it and |outlen| to its length. This memory will 1642 * not be modified, but one should assume that the SSL* keeps a reference to 1643 * it. 1644 * 1645 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. 1646 * Otherwise, no such extension will be included in the ServerHello. 1647 */ 1648 void 1649 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1650 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1651 { 1652 ctx->next_protos_advertised_cb = cb; 1653 ctx->next_protos_advertised_cb_arg = arg; 1654 } 1655 1656 /* 1657 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1658 * client needs to select a protocol from the server's provided list. |out| 1659 * must be set to point to the selected protocol (which may be within |in|). 1660 * The length of the protocol name must be written into |outlen|. The server's 1661 * advertised protocols are provided in |in| and |inlen|. The callback can 1662 * assume that |in| is syntactically valid. 1663 * 1664 * The client must select a protocol. It is fatal to the connection if this 1665 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1666 */ 1667 void 1668 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1669 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1670 unsigned int inlen, void *arg), void *arg) 1671 { 1672 ctx->next_proto_select_cb = cb; 1673 ctx->next_proto_select_cb_arg = arg; 1674 } 1675 # endif 1676 #endif 1677 1678 int 1679 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1680 const char *label, size_t llen, const unsigned char *p, size_t plen, 1681 int use_context) 1682 { 1683 if (s->version < TLS1_VERSION) 1684 return (-1); 1685 1686 return (s->method->ssl3_enc->export_keying_material(s, out, olen, 1687 label, llen, p, plen, use_context)); 1688 } 1689 1690 static unsigned long 1691 ssl_session_hash(const SSL_SESSION *a) 1692 { 1693 unsigned long l; 1694 1695 l = (unsigned long) 1696 ((unsigned int) a->session_id[0] )| 1697 ((unsigned int) a->session_id[1]<< 8L)| 1698 ((unsigned long)a->session_id[2]<<16L)| 1699 ((unsigned long)a->session_id[3]<<24L); 1700 return (l); 1701 } 1702 1703 /* 1704 * NB: If this function (or indeed the hash function which uses a sort of 1705 * coarser function than this one) is changed, ensure 1706 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1707 * able to construct an SSL_SESSION that will collide with any existing session 1708 * with a matching session ID. 1709 */ 1710 static int 1711 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1712 { 1713 if (a->ssl_version != b->ssl_version) 1714 return (1); 1715 if (a->session_id_length != b->session_id_length) 1716 return (1); 1717 return (memcmp(a->session_id, b->session_id, a->session_id_length)); 1718 } 1719 1720 /* 1721 * These wrapper functions should remain rather than redeclaring 1722 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1723 * variable. The reason is that the functions aren't static, they're exposed via 1724 * ssl.h. 1725 */ 1726 static 1727 IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1728 static 1729 IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1730 1731 SSL_CTX * 1732 SSL_CTX_new(const SSL_METHOD *meth) 1733 { 1734 SSL_CTX *ret = NULL; 1735 1736 if (meth == NULL) { 1737 SSLerr(SSL_F_SSL_CTX_NEW, 1738 SSL_R_NULL_SSL_METHOD_PASSED); 1739 return (NULL); 1740 } 1741 1742 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1743 SSLerr(SSL_F_SSL_CTX_NEW, 1744 SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1745 goto err; 1746 } 1747 ret = calloc(1, sizeof(SSL_CTX)); 1748 if (ret == NULL) 1749 goto err; 1750 1751 ret->method = meth; 1752 1753 ret->cert_store = NULL; 1754 ret->session_cache_mode = SSL_SESS_CACHE_SERVER; 1755 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1756 ret->session_cache_head = NULL; 1757 ret->session_cache_tail = NULL; 1758 1759 /* We take the system default */ 1760 ret->session_timeout = meth->get_timeout(); 1761 1762 ret->new_session_cb = 0; 1763 ret->remove_session_cb = 0; 1764 ret->get_session_cb = 0; 1765 ret->generate_session_id = 0; 1766 1767 memset((char *)&ret->stats, 0, sizeof(ret->stats)); 1768 1769 ret->references = 1; 1770 ret->quiet_shutdown = 0; 1771 1772 /* ret->cipher=NULL; 1773 ret->master_key=NULL; 1774 */ 1775 1776 ret->info_callback = NULL; 1777 1778 ret->app_verify_callback = 0; 1779 ret->app_verify_arg = NULL; 1780 1781 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1782 ret->read_ahead = 0; 1783 ret->msg_callback = 0; 1784 ret->msg_callback_arg = NULL; 1785 ret->verify_mode = SSL_VERIFY_NONE; 1786 #if 0 1787 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1788 #endif 1789 ret->sid_ctx_length = 0; 1790 ret->default_verify_callback = NULL; 1791 if ((ret->cert = ssl_cert_new()) == NULL) 1792 goto err; 1793 1794 ret->default_passwd_callback = 0; 1795 ret->default_passwd_callback_userdata = NULL; 1796 ret->client_cert_cb = 0; 1797 ret->app_gen_cookie_cb = 0; 1798 ret->app_verify_cookie_cb = 0; 1799 1800 ret->sessions = lh_SSL_SESSION_new(); 1801 if (ret->sessions == NULL) 1802 goto err; 1803 ret->cert_store = X509_STORE_new(); 1804 if (ret->cert_store == NULL) 1805 goto err; 1806 1807 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1808 &ret->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1809 if (ret->cipher_list == NULL || 1810 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1811 SSLerr(SSL_F_SSL_CTX_NEW, 1812 SSL_R_LIBRARY_HAS_NO_CIPHERS); 1813 goto err2; 1814 } 1815 1816 ret->param = X509_VERIFY_PARAM_new(); 1817 if (!ret->param) 1818 goto err; 1819 1820 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) { 1821 SSLerr(SSL_F_SSL_CTX_NEW, 1822 SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1823 goto err2; 1824 } 1825 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) { 1826 SSLerr(SSL_F_SSL_CTX_NEW, 1827 SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1828 goto err2; 1829 } 1830 1831 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL) 1832 goto err; 1833 1834 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1835 1836 ret->extra_certs = NULL; 1837 /* No compression for DTLS */ 1838 if (meth->version != DTLS1_VERSION) 1839 ret->comp_methods = SSL_COMP_get_compression_methods(); 1840 1841 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1842 1843 #ifndef OPENSSL_NO_TLSEXT 1844 ret->tlsext_servername_callback = 0; 1845 ret->tlsext_servername_arg = NULL; 1846 /* Setup RFC4507 ticket keys */ 1847 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1848 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1849 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1850 ret->options |= SSL_OP_NO_TICKET; 1851 1852 ret->tlsext_status_cb = 0; 1853 ret->tlsext_status_arg = NULL; 1854 1855 # ifndef OPENSSL_NO_NEXTPROTONEG 1856 ret->next_protos_advertised_cb = 0; 1857 ret->next_proto_select_cb = 0; 1858 # endif 1859 #endif 1860 #ifndef OPENSSL_NO_PSK 1861 ret->psk_identity_hint = NULL; 1862 ret->psk_client_callback = NULL; 1863 ret->psk_server_callback = NULL; 1864 #endif 1865 #ifndef OPENSSL_NO_ENGINE 1866 ret->client_cert_engine = NULL; 1867 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1868 #define eng_strx(x) #x 1869 #define eng_str(x) eng_strx(x) 1870 /* Use specific client engine automatically... ignore errors */ 1871 { 1872 ENGINE *eng; 1873 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1874 if (!eng) { 1875 ERR_clear_error(); 1876 ENGINE_load_builtin_engines(); 1877 eng = ENGINE_by_id(eng_str( 1878 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1879 } 1880 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1881 ERR_clear_error(); 1882 } 1883 #endif 1884 #endif 1885 /* 1886 * Default is to connect to non-RI servers. When RI is more widely 1887 * deployed might change this. 1888 */ 1889 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1890 1891 return (ret); 1892 err: 1893 SSLerr(SSL_F_SSL_CTX_NEW, 1894 ERR_R_MALLOC_FAILURE); 1895 err2: 1896 if (ret != NULL) 1897 SSL_CTX_free(ret); 1898 return (NULL); 1899 } 1900 1901 #if 0 1902 static void 1903 SSL_COMP_free(SSL_COMP *comp) 1904 { free(comp); 1905 } 1906 #endif 1907 1908 void 1909 SSL_CTX_free(SSL_CTX *a) 1910 { 1911 int i; 1912 1913 if (a == NULL) 1914 return; 1915 1916 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX); 1917 if (i > 0) 1918 return; 1919 1920 if (a->param) 1921 X509_VERIFY_PARAM_free(a->param); 1922 1923 /* 1924 * Free internal session cache. However: the remove_cb() may reference 1925 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1926 * after the sessions were flushed. 1927 * As the ex_data handling routines might also touch the session cache, 1928 * the most secure solution seems to be: empty (flush) the cache, then 1929 * free ex_data, then finally free the cache. 1930 * (See ticket [openssl.org #212].) 1931 */ 1932 if (a->sessions != NULL) 1933 SSL_CTX_flush_sessions(a, 0); 1934 1935 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1936 1937 if (a->sessions != NULL) 1938 lh_SSL_SESSION_free(a->sessions); 1939 1940 if (a->cert_store != NULL) 1941 X509_STORE_free(a->cert_store); 1942 if (a->cipher_list != NULL) 1943 sk_SSL_CIPHER_free(a->cipher_list); 1944 if (a->cipher_list_by_id != NULL) 1945 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1946 if (a->cert != NULL) 1947 ssl_cert_free(a->cert); 1948 if (a->client_CA != NULL) 1949 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free); 1950 if (a->extra_certs != NULL) 1951 sk_X509_pop_free(a->extra_certs, X509_free); 1952 #if 0 /* This should never be done, since it removes a global database */ 1953 if (a->comp_methods != NULL) 1954 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free); 1955 #else 1956 a->comp_methods = NULL; 1957 #endif 1958 1959 #ifndef OPENSSL_NO_SRTP 1960 if (a->srtp_profiles) 1961 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1962 #endif 1963 1964 #ifndef OPENSSL_NO_PSK 1965 if (a->psk_identity_hint) 1966 free(a->psk_identity_hint); 1967 #endif 1968 #ifndef OPENSSL_NO_ENGINE 1969 if (a->client_cert_engine) 1970 ENGINE_finish(a->client_cert_engine); 1971 #endif 1972 1973 free(a); 1974 } 1975 1976 void 1977 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1978 { 1979 ctx->default_passwd_callback = cb; 1980 } 1981 1982 void 1983 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 1984 { 1985 ctx->default_passwd_callback_userdata = u; 1986 } 1987 1988 void 1989 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 1990 void *), void *arg) 1991 { 1992 ctx->app_verify_callback = cb; 1993 ctx->app_verify_arg = arg; 1994 } 1995 1996 void 1997 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 1998 { 1999 ctx->verify_mode = mode; 2000 ctx->default_verify_callback = cb; 2001 } 2002 2003 void 2004 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2005 { 2006 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2007 } 2008 2009 void 2010 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2011 { 2012 CERT_PKEY *cpk; 2013 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign; 2014 int rsa_enc_export, dh_rsa_export, dh_dsa_export; 2015 int rsa_tmp_export, dh_tmp_export, kl; 2016 unsigned long mask_k, mask_a, emask_k, emask_a; 2017 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2018 #ifndef OPENSSL_NO_ECDH 2019 int have_ecdh_tmp; 2020 #endif 2021 X509 *x = NULL; 2022 EVP_PKEY *ecc_pkey = NULL; 2023 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2024 2025 if (c == NULL) 2026 return; 2027 2028 kl = SSL_C_EXPORT_PKEYLENGTH(cipher); 2029 2030 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2031 rsa_tmp_export = (c->rsa_tmp_cb != NULL || 2032 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2033 #ifndef OPENSSL_NO_DH 2034 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2035 dh_tmp_export = (c->dh_tmp_cb != NULL || 2036 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2037 #else 2038 dh_tmp = dh_tmp_export = 0; 2039 #endif 2040 2041 #ifndef OPENSSL_NO_ECDH 2042 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2043 #endif 2044 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2045 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2046 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2047 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2048 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2049 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2050 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2051 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]); 2052 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2053 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2054 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]); 2055 /* FIX THIS EAY EAY EAY */ 2056 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL); 2057 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2058 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2059 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 mask_k = 0; 2061 mask_a = 0; 2062 emask_k = 0; 2063 emask_a = 0; 2064 2065 2066 2067 #ifdef CIPHER_DEBUG 2068 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d " 2069 "rs=%d ds=%d dhr=%d dhd=%d\n", 2070 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, 2071 rsa_enc, rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa); 2072 #endif 2073 2074 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2075 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2076 mask_k |= SSL_kGOST; 2077 mask_a |= SSL_aGOST01; 2078 } 2079 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2080 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2081 mask_k |= SSL_kGOST; 2082 mask_a |= SSL_aGOST94; 2083 } 2084 2085 if (rsa_enc || (rsa_tmp && rsa_sign)) 2086 mask_k|=SSL_kRSA; 2087 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2088 emask_k|=SSL_kRSA; 2089 2090 #if 0 2091 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2092 if ((dh_tmp || dh_rsa || dh_dsa) && 2093 (rsa_enc || rsa_sign || dsa_sign)) 2094 mask_k|=SSL_kEDH; 2095 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2096 (rsa_enc || rsa_sign || dsa_sign)) 2097 emask_k|=SSL_kEDH; 2098 #endif 2099 2100 if (dh_tmp_export) 2101 emask_k|=SSL_kEDH; 2102 2103 if (dh_tmp) 2104 mask_k|=SSL_kEDH; 2105 2106 if (dh_rsa) 2107 mask_k|=SSL_kDHr; 2108 if (dh_rsa_export) 2109 emask_k|=SSL_kDHr; 2110 2111 if (dh_dsa) 2112 mask_k|=SSL_kDHd; 2113 if (dh_dsa_export) 2114 emask_k|=SSL_kDHd; 2115 2116 if (rsa_enc || rsa_sign) { 2117 mask_a|=SSL_aRSA; 2118 emask_a|=SSL_aRSA; 2119 } 2120 2121 if (dsa_sign) { 2122 mask_a|=SSL_aDSS; 2123 emask_a|=SSL_aDSS; 2124 } 2125 2126 mask_a|=SSL_aNULL; 2127 emask_a|=SSL_aNULL; 2128 2129 2130 /* 2131 * An ECC certificate may be usable for ECDH and/or 2132 * ECDSA cipher suites depending on the key usage extension. 2133 */ 2134 if (have_ecc_cert) { 2135 /* This call populates extension flags (ex_flags) */ 2136 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2137 X509_check_purpose(x, -1, 0); 2138 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2139 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2140 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2141 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2142 ecc_pkey = X509_get_pubkey(x); 2143 ecc_pkey_size = (ecc_pkey != NULL) ? 2144 EVP_PKEY_bits(ecc_pkey) : 0; 2145 EVP_PKEY_free(ecc_pkey); 2146 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2147 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2148 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2149 } 2150 #ifndef OPENSSL_NO_ECDH 2151 if (ecdh_ok) { 2152 2153 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) { 2154 mask_k|=SSL_kECDHr; 2155 mask_a|=SSL_aECDH; 2156 if (ecc_pkey_size <= 163) { 2157 emask_k|=SSL_kECDHr; 2158 emask_a|=SSL_aECDH; 2159 } 2160 } 2161 2162 if (pk_nid == NID_X9_62_id_ecPublicKey) { 2163 mask_k|=SSL_kECDHe; 2164 mask_a|=SSL_aECDH; 2165 if (ecc_pkey_size <= 163) { 2166 emask_k|=SSL_kECDHe; 2167 emask_a|=SSL_aECDH; 2168 } 2169 } 2170 } 2171 #endif 2172 #ifndef OPENSSL_NO_ECDSA 2173 if (ecdsa_ok) { 2174 mask_a|=SSL_aECDSA; 2175 emask_a|=SSL_aECDSA; 2176 } 2177 #endif 2178 } 2179 2180 #ifndef OPENSSL_NO_ECDH 2181 if (have_ecdh_tmp) { 2182 mask_k|=SSL_kEECDH; 2183 emask_k|=SSL_kEECDH; 2184 } 2185 #endif 2186 2187 #ifndef OPENSSL_NO_PSK 2188 mask_k |= SSL_kPSK; 2189 mask_a |= SSL_aPSK; 2190 emask_k |= SSL_kPSK; 2191 emask_a |= SSL_aPSK; 2192 #endif 2193 2194 c->mask_k = mask_k; 2195 c->mask_a = mask_a; 2196 c->export_mask_k = emask_k; 2197 c->export_mask_a = emask_a; 2198 c->valid = 1; 2199 } 2200 2201 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2202 #define ku_reject(x, usage) \ 2203 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2204 2205 #ifndef OPENSSL_NO_EC 2206 2207 int 2208 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2209 { 2210 unsigned long alg_k, alg_a; 2211 EVP_PKEY *pkey = NULL; 2212 int keysize = 0; 2213 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2214 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2215 2216 alg_k = cs->algorithm_mkey; 2217 alg_a = cs->algorithm_auth; 2218 2219 if (SSL_C_IS_EXPORT(cs)) { 2220 /* ECDH key length in export ciphers must be <= 163 bits */ 2221 pkey = X509_get_pubkey(x); 2222 if (pkey == NULL) 2223 return (0); 2224 keysize = EVP_PKEY_bits(pkey); 2225 EVP_PKEY_free(pkey); 2226 if (keysize > 163) 2227 return (0); 2228 } 2229 2230 /* This call populates the ex_flags field correctly */ 2231 X509_check_purpose(x, -1, 0); 2232 if ((x->sig_alg) && (x->sig_alg->algorithm)) { 2233 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2234 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2235 } 2236 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) { 2237 /* key usage, if present, must allow key agreement */ 2238 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) { 2239 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2240 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2241 return (0); 2242 } 2243 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < 2244 TLS1_2_VERSION) { 2245 /* signature alg must be ECDSA */ 2246 if (pk_nid != NID_X9_62_id_ecPublicKey) { 2247 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2248 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2249 return (0); 2250 } 2251 } 2252 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < 2253 TLS1_2_VERSION) { 2254 /* signature alg must be RSA */ 2255 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) { 2256 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2257 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2258 return (0); 2259 } 2260 } 2261 } 2262 if (alg_a & SSL_aECDSA) { 2263 /* key usage, if present, must allow signing */ 2264 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) { 2265 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, 2266 SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2267 return (0); 2268 } 2269 } 2270 2271 return (1); 2272 /* all checks are ok */ 2273 } 2274 2275 #endif 2276 2277 /* THIS NEEDS CLEANING UP */ 2278 CERT_PKEY * 2279 ssl_get_server_send_pkey(const SSL *s) 2280 { 2281 unsigned long alg_k, alg_a; 2282 CERT *c; 2283 int i; 2284 2285 c = s->cert; 2286 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2287 2288 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2289 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2290 2291 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) { 2292 /* 2293 * We don't need to look at SSL_kEECDH 2294 * since no certificate is needed for 2295 * anon ECDH and for authenticated 2296 * EECDH, the check for the auth 2297 * algorithm will set i correctly 2298 * NOTE: For ECDH-RSA, we need an ECC 2299 * not an RSA cert but for EECDH-RSA 2300 * we need an RSA cert. Placing the 2301 * checks for SSL_kECDH before RSA 2302 * checks ensures the correct cert is chosen. 2303 */ 2304 i = SSL_PKEY_ECC; 2305 } else if (alg_a & SSL_aECDSA) { 2306 i = SSL_PKEY_ECC; 2307 } else if (alg_k & SSL_kDHr) 2308 i = SSL_PKEY_DH_RSA; 2309 else if (alg_k & SSL_kDHd) 2310 i = SSL_PKEY_DH_DSA; 2311 else if (alg_a & SSL_aDSS) 2312 i = SSL_PKEY_DSA_SIGN; 2313 else if (alg_a & SSL_aRSA) { 2314 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2315 i = SSL_PKEY_RSA_SIGN; 2316 else 2317 i = SSL_PKEY_RSA_ENC; 2318 } else if (alg_a & SSL_aKRB5) { 2319 /* VRS something else here? */ 2320 return (NULL); 2321 } else if (alg_a & SSL_aGOST94) 2322 i = SSL_PKEY_GOST94; 2323 else if (alg_a & SSL_aGOST01) 2324 i = SSL_PKEY_GOST01; 2325 else { /* if (alg_a & SSL_aNULL) */ 2326 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, 2327 ERR_R_INTERNAL_ERROR); 2328 return (NULL); 2329 } 2330 2331 return (c->pkeys + i); 2332 } 2333 2334 X509 * 2335 ssl_get_server_send_cert(const SSL *s) 2336 { 2337 CERT_PKEY *cpk; 2338 2339 cpk = ssl_get_server_send_pkey(s); 2340 if (!cpk) 2341 return (NULL); 2342 return (cpk->x509); 2343 } 2344 2345 EVP_PKEY * 2346 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2347 { 2348 unsigned long alg_a; 2349 CERT *c; 2350 int idx = -1; 2351 2352 alg_a = cipher->algorithm_auth; 2353 c = s->cert; 2354 2355 if ((alg_a & SSL_aDSS) && 2356 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2357 idx = SSL_PKEY_DSA_SIGN; 2358 else if (alg_a & SSL_aRSA) { 2359 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2360 idx = SSL_PKEY_RSA_SIGN; 2361 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2362 idx = SSL_PKEY_RSA_ENC; 2363 } else if ((alg_a & SSL_aECDSA) && 2364 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2365 idx = SSL_PKEY_ECC; 2366 if (idx == -1) { 2367 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, 2368 ERR_R_INTERNAL_ERROR); 2369 return (NULL); 2370 } 2371 if (pmd) 2372 *pmd = c->pkeys[idx].digest; 2373 return (c->pkeys[idx].privatekey); 2374 } 2375 2376 void 2377 ssl_update_cache(SSL *s, int mode) 2378 { 2379 int i; 2380 2381 /* 2382 * If the session_id_length is 0, we are not supposed to cache it, 2383 * and it would be rather hard to do anyway :-) 2384 */ 2385 if (s->session->session_id_length == 0) 2386 return; 2387 2388 i = s->session_ctx->session_cache_mode; 2389 if ((i & mode) && (!s->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2390 || SSL_CTX_add_session(s->session_ctx, s->session)) 2391 && (s->session_ctx->new_session_cb != NULL)) { 2392 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2393 if (!s->session_ctx->new_session_cb(s, s->session)) 2394 SSL_SESSION_free(s->session); 2395 } 2396 2397 /* auto flush every 255 connections */ 2398 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2399 ((i & mode) == mode)) { 2400 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2401 s->session_ctx->stats.sess_connect_good : 2402 s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) { 2403 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2404 } 2405 } 2406 } 2407 2408 const SSL_METHOD * 2409 SSL_get_ssl_method(SSL *s) 2410 { 2411 return (s->method); 2412 } 2413 2414 int 2415 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2416 { 2417 int conn = -1; 2418 int ret = 1; 2419 2420 if (s->method != meth) { 2421 if (s->handshake_func != NULL) 2422 conn = (s->handshake_func == s->method->ssl_connect); 2423 2424 if (s->method->version == meth->version) 2425 s->method = meth; 2426 else { 2427 s->method->ssl_free(s); 2428 s->method = meth; 2429 ret = s->method->ssl_new(s); 2430 } 2431 2432 if (conn == 1) 2433 s->handshake_func = meth->ssl_connect; 2434 else if (conn == 0) 2435 s->handshake_func = meth->ssl_accept; 2436 } 2437 return (ret); 2438 } 2439 2440 int 2441 SSL_get_error(const SSL *s, int i) 2442 { 2443 int reason; 2444 unsigned long l; 2445 BIO *bio; 2446 2447 if (i > 0) 2448 return (SSL_ERROR_NONE); 2449 2450 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2451 * etc, where we do encode the error */ 2452 if ((l = ERR_peek_error()) != 0) { 2453 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2454 return (SSL_ERROR_SYSCALL); 2455 else 2456 return (SSL_ERROR_SSL); 2457 } 2458 2459 if ((i < 0) && SSL_want_read(s)) { 2460 bio = SSL_get_rbio(s); 2461 if (BIO_should_read(bio)) 2462 return (SSL_ERROR_WANT_READ); 2463 else if (BIO_should_write(bio)) 2464 /* 2465 * This one doesn't make too much sense... We never 2466 * try to write to the rbio, and an application 2467 * program where rbio and wbio are separate couldn't 2468 * even know what it should wait for. However if we 2469 * ever set s->rwstate incorrectly (so that we have 2470 * SSL_want_read(s) instead of SSL_want_write(s)) 2471 * and rbio and wbio *are* the same, this test works 2472 * around that bug; so it might be safer to keep it. 2473 */ 2474 return (SSL_ERROR_WANT_WRITE); 2475 else if (BIO_should_io_special(bio)) { 2476 reason = BIO_get_retry_reason(bio); 2477 if (reason == BIO_RR_CONNECT) 2478 return (SSL_ERROR_WANT_CONNECT); 2479 else if (reason == BIO_RR_ACCEPT) 2480 return (SSL_ERROR_WANT_ACCEPT); 2481 else 2482 return (SSL_ERROR_SYSCALL); /* unknown */ 2483 } 2484 } 2485 2486 if ((i < 0) && SSL_want_write(s)) { 2487 bio = SSL_get_wbio(s); 2488 if (BIO_should_write(bio)) 2489 return (SSL_ERROR_WANT_WRITE); 2490 else if (BIO_should_read(bio)) { 2491 /* 2492 * See above (SSL_want_read(s) with 2493 * BIO_should_write(bio)) 2494 */ 2495 return (SSL_ERROR_WANT_READ); 2496 } else if (BIO_should_io_special(bio)) { 2497 reason = BIO_get_retry_reason(bio); 2498 if (reason == BIO_RR_CONNECT) 2499 return (SSL_ERROR_WANT_CONNECT); 2500 else if (reason == BIO_RR_ACCEPT) 2501 return (SSL_ERROR_WANT_ACCEPT); 2502 else 2503 return (SSL_ERROR_SYSCALL); 2504 } 2505 } 2506 if ((i < 0) && SSL_want_x509_lookup(s)) { 2507 return (SSL_ERROR_WANT_X509_LOOKUP); 2508 } 2509 2510 if (i == 0) { 2511 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2512 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2513 return (SSL_ERROR_ZERO_RETURN); 2514 } 2515 return (SSL_ERROR_SYSCALL); 2516 } 2517 2518 int 2519 SSL_do_handshake(SSL *s) 2520 { 2521 int ret = 1; 2522 2523 if (s->handshake_func == NULL) { 2524 SSLerr(SSL_F_SSL_DO_HANDSHAKE, 2525 SSL_R_CONNECTION_TYPE_NOT_SET); 2526 return (-1); 2527 } 2528 2529 s->method->ssl_renegotiate_check(s); 2530 2531 if (SSL_in_init(s) || SSL_in_before(s)) { 2532 ret = s->handshake_func(s); 2533 } 2534 return (ret); 2535 } 2536 2537 /* 2538 * For the next 2 functions, SSL_clear() sets shutdown and so 2539 * one of these calls will reset it 2540 */ 2541 void 2542 SSL_set_accept_state(SSL *s) 2543 { 2544 s->server = 1; 2545 s->shutdown = 0; 2546 s->state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2547 s->handshake_func = s->method->ssl_accept; 2548 /* clear the current cipher */ 2549 ssl_clear_cipher_ctx(s); 2550 ssl_clear_hash_ctx(&s->read_hash); 2551 ssl_clear_hash_ctx(&s->write_hash); 2552 } 2553 2554 void 2555 SSL_set_connect_state(SSL *s) 2556 { 2557 s->server = 0; 2558 s->shutdown = 0; 2559 s->state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2560 s->handshake_func = s->method->ssl_connect; 2561 /* clear the current cipher */ 2562 ssl_clear_cipher_ctx(s); 2563 ssl_clear_hash_ctx(&s->read_hash); 2564 ssl_clear_hash_ctx(&s->write_hash); 2565 } 2566 2567 int 2568 ssl_undefined_function(SSL *s) 2569 { 2570 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, 2571 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2572 return (0); 2573 } 2574 2575 int 2576 ssl_undefined_void_function(void) 2577 { 2578 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION, 2579 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2580 return (0); 2581 } 2582 2583 int 2584 ssl_undefined_const_function(const SSL *s) 2585 { 2586 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION, 2587 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2588 return (0); 2589 } 2590 2591 SSL_METHOD * 2592 ssl_bad_method(int ver) 2593 { 2594 SSLerr(SSL_F_SSL_BAD_METHOD, 2595 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2596 return (NULL); 2597 } 2598 2599 const char * 2600 SSL_get_version(const SSL *s) 2601 { 2602 if (s->version == TLS1_2_VERSION) 2603 return ("TLSv1.2"); 2604 else if (s->version == TLS1_1_VERSION) 2605 return ("TLSv1.1"); 2606 else if (s->version == TLS1_VERSION) 2607 return ("TLSv1"); 2608 else if (s->version == SSL3_VERSION) 2609 return ("SSLv3"); 2610 else 2611 return ("unknown"); 2612 } 2613 2614 SSL * 2615 SSL_dup(SSL *s) 2616 { 2617 STACK_OF(X509_NAME) *sk; 2618 X509_NAME *xn; 2619 SSL *ret; 2620 int i; 2621 2622 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2623 return (NULL); 2624 2625 ret->version = s->version; 2626 ret->type = s->type; 2627 ret->method = s->method; 2628 2629 if (s->session != NULL) { 2630 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2631 SSL_copy_session_id(ret, s); 2632 } else { 2633 /* 2634 * No session has been established yet, so we have to expect 2635 * that s->cert or ret->cert will be changed later -- 2636 * they should not both point to the same object, 2637 * and thus we can't use SSL_copy_session_id. 2638 */ 2639 2640 ret->method->ssl_free(ret); 2641 ret->method = s->method; 2642 ret->method->ssl_new(ret); 2643 2644 if (s->cert != NULL) { 2645 if (ret->cert != NULL) { 2646 ssl_cert_free(ret->cert); 2647 } 2648 ret->cert = ssl_cert_dup(s->cert); 2649 if (ret->cert == NULL) 2650 goto err; 2651 } 2652 2653 SSL_set_session_id_context(ret, 2654 s->sid_ctx, s->sid_ctx_length); 2655 } 2656 2657 ret->options = s->options; 2658 ret->mode = s->mode; 2659 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2660 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2661 ret->msg_callback = s->msg_callback; 2662 ret->msg_callback_arg = s->msg_callback_arg; 2663 SSL_set_verify(ret, SSL_get_verify_mode(s), 2664 SSL_get_verify_callback(s)); 2665 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2666 ret->generate_session_id = s->generate_session_id; 2667 2668 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2669 2670 ret->debug = s->debug; 2671 2672 /* copy app data, a little dangerous perhaps */ 2673 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2674 &ret->ex_data, &s->ex_data)) 2675 goto err; 2676 2677 /* setup rbio, and wbio */ 2678 if (s->rbio != NULL) { 2679 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2680 goto err; 2681 } 2682 if (s->wbio != NULL) { 2683 if (s->wbio != s->rbio) { 2684 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2685 goto err; 2686 } else 2687 ret->wbio = ret->rbio; 2688 } 2689 ret->rwstate = s->rwstate; 2690 ret->in_handshake = s->in_handshake; 2691 ret->handshake_func = s->handshake_func; 2692 ret->server = s->server; 2693 ret->renegotiate = s->renegotiate; 2694 ret->new_session = s->new_session; 2695 ret->quiet_shutdown = s->quiet_shutdown; 2696 ret->shutdown = s->shutdown; 2697 /* SSL_dup does not really work at any state, though */ 2698 ret->state=s->state; 2699 ret->rstate = s->rstate; 2700 2701 /* 2702 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2703 * ret->init_off 2704 */ 2705 ret->init_num = 0; 2706 2707 ret->hit = s->hit; 2708 2709 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2710 2711 /* dup the cipher_list and cipher_list_by_id stacks */ 2712 if (s->cipher_list != NULL) { 2713 if ((ret->cipher_list = 2714 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2715 goto err; 2716 } 2717 if (s->cipher_list_by_id != NULL) { 2718 if ((ret->cipher_list_by_id = 2719 sk_SSL_CIPHER_dup(s->cipher_list_by_id)) == NULL) 2720 goto err; 2721 } 2722 2723 /* Dup the client_CA list */ 2724 if (s->client_CA != NULL) { 2725 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2726 ret->client_CA = sk; 2727 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2728 xn = sk_X509_NAME_value(sk, i); 2729 if (sk_X509_NAME_set(sk, i, 2730 X509_NAME_dup(xn)) == NULL) { 2731 X509_NAME_free(xn); 2732 goto err; 2733 } 2734 } 2735 } 2736 2737 if (0) { 2738 err: 2739 if (ret != NULL) 2740 SSL_free(ret); 2741 ret = NULL; 2742 } 2743 return (ret); 2744 } 2745 2746 void 2747 ssl_clear_cipher_ctx(SSL *s) 2748 { 2749 if (s->enc_read_ctx != NULL) { 2750 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2751 free(s->enc_read_ctx); 2752 s->enc_read_ctx = NULL; 2753 } 2754 if (s->enc_write_ctx != NULL) { 2755 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2756 free(s->enc_write_ctx); 2757 s->enc_write_ctx = NULL; 2758 } 2759 #ifndef OPENSSL_NO_COMP 2760 if (s->expand != NULL) { 2761 COMP_CTX_free(s->expand); 2762 s->expand = NULL; 2763 } 2764 if (s->compress != NULL) { 2765 COMP_CTX_free(s->compress); 2766 s->compress = NULL; 2767 } 2768 #endif 2769 } 2770 2771 /* Fix this function so that it takes an optional type parameter */ 2772 X509 * 2773 SSL_get_certificate(const SSL *s) 2774 { 2775 if (s->cert != NULL) 2776 return (s->cert->key->x509); 2777 else 2778 return (NULL); 2779 } 2780 2781 /* Fix this function so that it takes an optional type parameter */ 2782 EVP_PKEY * 2783 SSL_get_privatekey(SSL *s) 2784 { 2785 if (s->cert != NULL) 2786 return (s->cert->key->privatekey); 2787 else 2788 return (NULL); 2789 } 2790 2791 const SSL_CIPHER * 2792 SSL_get_current_cipher(const SSL *s) 2793 { 2794 if ((s->session != NULL) && (s->session->cipher != NULL)) 2795 return (s->session->cipher); 2796 return (NULL); 2797 } 2798 #ifdef OPENSSL_NO_COMP 2799 const void * 2800 SSL_get_current_compression(SSL *s) 2801 { 2802 return (NULL); 2803 } 2804 2805 const void * 2806 SSL_get_current_expansion(SSL *s) 2807 { 2808 return (NULL); 2809 } 2810 #else 2811 2812 const COMP_METHOD * 2813 SSL_get_current_compression(SSL *s) 2814 { 2815 if (s->compress != NULL) 2816 return (s->compress->meth); 2817 return (NULL); 2818 } 2819 2820 const COMP_METHOD * 2821 SSL_get_current_expansion(SSL *s) 2822 { 2823 if (s->expand != NULL) 2824 return (s->expand->meth); 2825 return (NULL); 2826 } 2827 #endif 2828 2829 int 2830 ssl_init_wbio_buffer(SSL *s, int push) 2831 { 2832 BIO *bbio; 2833 2834 if (s->bbio == NULL) { 2835 bbio = BIO_new(BIO_f_buffer()); 2836 if (bbio == NULL) 2837 return (0); 2838 s->bbio = bbio; 2839 } else { 2840 bbio = s->bbio; 2841 if (s->bbio == s->wbio) 2842 s->wbio = BIO_pop(s->wbio); 2843 } 2844 (void)BIO_reset(bbio); 2845 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2846 if (!BIO_set_read_buffer_size(bbio, 1)) { 2847 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, 2848 ERR_R_BUF_LIB); 2849 return (0); 2850 } 2851 if (push) { 2852 if (s->wbio != bbio) 2853 s->wbio = BIO_push(bbio, s->wbio); 2854 } else { 2855 if (s->wbio == bbio) 2856 s->wbio = BIO_pop(bbio); 2857 } 2858 return (1); 2859 } 2860 2861 void 2862 ssl_free_wbio_buffer(SSL *s) 2863 { 2864 if (s->bbio == NULL) 2865 return; 2866 2867 if (s->bbio == s->wbio) { 2868 /* remove buffering */ 2869 s->wbio = BIO_pop(s->wbio); 2870 } 2871 BIO_free(s->bbio); 2872 s->bbio = NULL; 2873 } 2874 2875 void 2876 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2877 { 2878 ctx->quiet_shutdown = mode; 2879 } 2880 2881 int 2882 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2883 { 2884 return (ctx->quiet_shutdown); 2885 } 2886 2887 void 2888 SSL_set_quiet_shutdown(SSL *s, int mode) 2889 { 2890 s->quiet_shutdown = mode; 2891 } 2892 2893 int 2894 SSL_get_quiet_shutdown(const SSL *s) 2895 { 2896 return (s->quiet_shutdown); 2897 } 2898 2899 void 2900 SSL_set_shutdown(SSL *s, int mode) 2901 { 2902 s->shutdown = mode; 2903 } 2904 2905 int 2906 SSL_get_shutdown(const SSL *s) 2907 { 2908 return (s->shutdown); 2909 } 2910 2911 int 2912 SSL_version(const SSL *s) 2913 { 2914 return (s->version); 2915 } 2916 2917 SSL_CTX * 2918 SSL_get_SSL_CTX(const SSL *ssl) 2919 { 2920 return (ssl->ctx); 2921 } 2922 2923 SSL_CTX * 2924 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2925 { 2926 if (ssl->ctx == ctx) 2927 return (ssl->ctx); 2928 #ifndef OPENSSL_NO_TLSEXT 2929 if (ctx == NULL) 2930 ctx = ssl->initial_ctx; 2931 #endif 2932 if (ssl->cert != NULL) 2933 ssl_cert_free(ssl->cert); 2934 ssl->cert = ssl_cert_dup(ctx->cert); 2935 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2936 if (ssl->ctx != NULL) 2937 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2938 ssl->ctx = ctx; 2939 return (ssl->ctx); 2940 } 2941 2942 #ifndef OPENSSL_NO_STDIO 2943 int 2944 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2945 { 2946 return (X509_STORE_set_default_paths(ctx->cert_store)); 2947 } 2948 2949 int 2950 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2951 const char *CApath) 2952 { 2953 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2954 } 2955 #endif 2956 2957 void 2958 SSL_set_info_callback(SSL *ssl, 2959 void (*cb)(const SSL *ssl, int type, int val)) 2960 { 2961 ssl->info_callback = cb; 2962 } 2963 2964 /* 2965 * One compiler (Diab DCC) doesn't like argument names in returned 2966 * function pointer. 2967 */ 2968 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2969 { 2970 return (ssl->info_callback); 2971 } 2972 2973 int 2974 SSL_state(const SSL *ssl) 2975 { 2976 return (ssl->state); 2977 } 2978 2979 void 2980 SSL_set_state(SSL *ssl, int state) 2981 { 2982 ssl->state = state; 2983 } 2984 2985 void 2986 SSL_set_verify_result(SSL *ssl, long arg) 2987 { 2988 ssl->verify_result = arg; 2989 } 2990 2991 long 2992 SSL_get_verify_result(const SSL *ssl) 2993 { 2994 return (ssl->verify_result); 2995 } 2996 2997 int 2998 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2999 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3000 { 3001 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3002 new_func, dup_func, free_func)); 3003 } 3004 3005 int 3006 SSL_set_ex_data(SSL *s, int idx, void *arg) 3007 { 3008 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3009 } 3010 3011 void * 3012 SSL_get_ex_data(const SSL *s, int idx) 3013 { 3014 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3015 } 3016 3017 int 3018 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 3019 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 3020 { 3021 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3022 new_func, dup_func, free_func)); 3023 } 3024 3025 int 3026 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 3027 { 3028 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); 3029 } 3030 3031 void * 3032 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 3033 { 3034 return (CRYPTO_get_ex_data(&s->ex_data, idx)); 3035 } 3036 3037 int 3038 ssl_ok(SSL *s) 3039 { 3040 return (1); 3041 } 3042 3043 X509_STORE * 3044 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3045 { 3046 return (ctx->cert_store); 3047 } 3048 3049 void 3050 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 3051 { 3052 if (ctx->cert_store != NULL) 3053 X509_STORE_free(ctx->cert_store); 3054 ctx->cert_store = store; 3055 } 3056 3057 int 3058 SSL_want(const SSL *s) 3059 { 3060 return (s->rwstate); 3061 } 3062 3063 /*! 3064 * \brief Set the callback for generating temporary RSA keys. 3065 * \param ctx the SSL context. 3066 * \param cb the callback 3067 */ 3068 3069 void 3070 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, 3071 int is_export, 3072 int keylength)) 3073 { 3074 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3075 } 3076 3077 void 3078 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, 3079 int is_export, 3080 int keylength)) 3081 { 3082 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3083 } 3084 3085 #ifdef DOXYGEN 3086 /*! 3087 * \brief The RSA temporary key callback function. 3088 * \param ssl the SSL session. 3089 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3090 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3091 * of the required key in bits. 3092 * \return the temporary RSA key. 3093 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3094 */ 3095 3096 RSA * 3097 cb(SSL *ssl, int is_export, int keylength) 3098 {} 3099 #endif 3100 3101 /*! 3102 * \brief Set the callback for generating temporary DH keys. 3103 * \param ctx the SSL context. 3104 * \param dh the callback 3105 */ 3106 3107 #ifndef OPENSSL_NO_DH 3108 void 3109 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 3110 int keylength)) 3111 { 3112 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3113 } 3114 3115 void 3116 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 3117 int keylength)) 3118 { 3119 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3120 } 3121 #endif 3122 3123 #ifndef OPENSSL_NO_ECDH 3124 void 3125 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 3126 int is_export, int keylength)) 3127 { 3128 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 3129 (void (*)(void))ecdh); 3130 } 3131 3132 void 3133 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3134 int keylength)) 3135 { 3136 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3137 } 3138 #endif 3139 3140 #ifndef OPENSSL_NO_PSK 3141 int 3142 SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3143 { 3144 if (identity_hint != NULL && strlen(identity_hint) > 3145 PSK_MAX_IDENTITY_LEN) { 3146 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, 3147 SSL_R_DATA_LENGTH_TOO_LONG); 3148 return (0); 3149 } 3150 if (ctx->psk_identity_hint != NULL) 3151 free(ctx->psk_identity_hint); 3152 if (identity_hint != NULL) { 3153 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3154 if (ctx->psk_identity_hint == NULL) 3155 return (0); 3156 } else 3157 ctx->psk_identity_hint = NULL; 3158 return (1); 3159 } 3160 3161 int 3162 SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3163 { 3164 if (s == NULL) 3165 return (0); 3166 3167 if (s->session == NULL) 3168 return (1); /* session not created yet, ignored */ 3169 3170 if (identity_hint != NULL && strlen(identity_hint) > 3171 PSK_MAX_IDENTITY_LEN) { 3172 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, 3173 SSL_R_DATA_LENGTH_TOO_LONG); 3174 return (0); 3175 } 3176 if (s->session->psk_identity_hint != NULL) 3177 free(s->session->psk_identity_hint); 3178 if (identity_hint != NULL) { 3179 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3180 if (s->session->psk_identity_hint == NULL) 3181 return (0); 3182 } else 3183 s->session->psk_identity_hint = NULL; 3184 return (1); 3185 } 3186 3187 const char * 3188 SSL_get_psk_identity_hint(const SSL *s) 3189 { 3190 if (s == NULL || s->session == NULL) 3191 return (NULL); 3192 return (s->session->psk_identity_hint); 3193 } 3194 3195 const char * 3196 SSL_get_psk_identity(const SSL *s) 3197 { 3198 if (s == NULL || s->session == NULL) 3199 return (NULL); 3200 return (s->session->psk_identity); 3201 } 3202 3203 void 3204 SSL_set_psk_client_callback(SSL *s, 3205 unsigned int (*cb)(SSL *ssl, const char *hint, 3206 char *identity, unsigned int max_identity_len, unsigned char *psk, 3207 unsigned int max_psk_len)) 3208 { 3209 s->psk_client_callback = cb; 3210 } 3211 3212 void 3213 SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3214 unsigned int (*cb)(SSL *ssl, const char *hint, 3215 char *identity, unsigned int max_identity_len, unsigned char *psk, 3216 unsigned int max_psk_len)) 3217 { 3218 ctx->psk_client_callback = cb; 3219 } 3220 3221 void 3222 SSL_set_psk_server_callback(SSL *s, 3223 unsigned int (*cb)(SSL *ssl, const char *identity, 3224 unsigned char *psk, unsigned int max_psk_len)) 3225 { 3226 s->psk_server_callback = cb; 3227 } 3228 3229 void 3230 SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3231 unsigned int (*cb)(SSL *ssl, const char *identity, 3232 unsigned char *psk, unsigned int max_psk_len)) 3233 { 3234 ctx->psk_server_callback = cb; 3235 } 3236 #endif 3237 3238 void 3239 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3240 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3241 { 3242 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3243 (void (*)(void))cb); 3244 } 3245 3246 void 3247 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3248 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3249 { 3250 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3251 } 3252 3253 /* 3254 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3255 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3256 * any. If EVP_MD pointer is passed, initializes ctx with this md 3257 * Returns newly allocated ctx; 3258 */ 3259 EVP_MD_CTX * 3260 ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md) 3261 { 3262 ssl_clear_hash_ctx(hash); 3263 *hash = EVP_MD_CTX_create(); 3264 if (md) 3265 EVP_DigestInit_ex(*hash, md, NULL); 3266 return (*hash); 3267 } 3268 3269 void 3270 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3271 { 3272 if (*hash) 3273 EVP_MD_CTX_destroy(*hash); 3274 *hash = NULL; 3275 } 3276 3277 void 3278 SSL_set_debug(SSL *s, int debug) 3279 { 3280 s->debug = debug; 3281 } 3282 3283 int 3284 SSL_cache_hit(SSL *s) 3285 { 3286 return (s->hit); 3287 } 3288 3289 IMPLEMENT_STACK_OF(SSL_CIPHER) 3290 IMPLEMENT_STACK_OF(SSL_COMP) 3291 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3292 ssl_cipher_id); 3293