ssl_lib.c revision 277195
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#ifdef REF_CHECK 146# include <assert.h> 147#endif 148#include <stdio.h> 149#include "ssl_locl.h" 150#include "kssl_lcl.h" 151#include <openssl/objects.h> 152#include <openssl/lhash.h> 153#include <openssl/x509v3.h> 154#include <openssl/rand.h> 155#include <openssl/ocsp.h> 156#ifndef OPENSSL_NO_DH 157#include <openssl/dh.h> 158#endif 159#ifndef OPENSSL_NO_ENGINE 160#include <openssl/engine.h> 161#endif 162 163const char *SSL_version_str=OPENSSL_VERSION_TEXT; 164 165SSL3_ENC_METHOD ssl3_undef_enc_method={ 166 /* evil casts, but these functions are only called if there's a library bug */ 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 185int SSL_clear(SSL *s) 186 { 187 188 if (s->method == NULL) 189 { 190 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 191 return(0); 192 } 193 194 if (ssl_clear_bad_session(s)) 195 { 196 SSL_SESSION_free(s->session); 197 s->session=NULL; 198 } 199 200 s->error=0; 201 s->hit=0; 202 s->shutdown=0; 203 204#if 0 /* Disabled since version 1.10 of this file (early return not 205 * needed because SSL_clear is not called when doing renegotiation) */ 206 /* This is set if we are doing dynamic renegotiation so keep 207 * the old cipher. It is sort of a SSL_clear_lite :-) */ 208 if (s->renegotiate) return(1); 209#else 210 if (s->renegotiate) 211 { 212 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 213 return 0; 214 } 215#endif 216 217 s->type=0; 218 219 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 220 221 s->version=s->method->version; 222 s->client_version=s->version; 223 s->rwstate=SSL_NOTHING; 224 s->rstate=SSL_ST_READ_HEADER; 225#if 0 226 s->read_ahead=s->ctx->read_ahead; 227#endif 228 229 if (s->init_buf != NULL) 230 { 231 BUF_MEM_free(s->init_buf); 232 s->init_buf=NULL; 233 } 234 235 ssl_clear_cipher_ctx(s); 236 ssl_clear_hash_ctx(&s->read_hash); 237 ssl_clear_hash_ctx(&s->write_hash); 238 239 s->first_packet=0; 240 241#if 1 242 /* Check to see if we were changed into a different method, if 243 * so, revert back if we are not doing session-id reuse. */ 244 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 245 { 246 s->method->ssl_free(s); 247 s->method=s->ctx->method; 248 if (!s->method->ssl_new(s)) 249 return(0); 250 } 251 else 252#endif 253 s->method->ssl_clear(s); 254 return(1); 255 } 256 257/** Used to change an SSL_CTXs default SSL method type */ 258int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth) 259 { 260 STACK_OF(SSL_CIPHER) *sk; 261 262 ctx->method=meth; 263 264 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 265 &(ctx->cipher_list_by_id), 266 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 267 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 268 { 269 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 270 return(0); 271 } 272 return(1); 273 } 274 275SSL *SSL_new(SSL_CTX *ctx) 276 { 277 SSL *s; 278 279 if (ctx == NULL) 280 { 281 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 282 return(NULL); 283 } 284 if (ctx->method == NULL) 285 { 286 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 287 return(NULL); 288 } 289 290 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 291 if (s == NULL) goto err; 292 memset(s,0,sizeof(SSL)); 293 294#ifndef OPENSSL_NO_KRB5 295 s->kssl_ctx = kssl_ctx_new(); 296#endif /* OPENSSL_NO_KRB5 */ 297 298 s->options=ctx->options; 299 s->mode=ctx->mode; 300 s->max_cert_list=ctx->max_cert_list; 301 302 if (ctx->cert != NULL) 303 { 304 /* Earlier library versions used to copy the pointer to 305 * the CERT, not its contents; only when setting new 306 * parameters for the per-SSL copy, ssl_cert_new would be 307 * called (and the direct reference to the per-SSL_CTX 308 * settings would be lost, but those still were indirectly 309 * accessed for various purposes, and for that reason they 310 * used to be known as s->ctx->default_cert). 311 * Now we don't look at the SSL_CTX's CERT after having 312 * duplicated it once. */ 313 314 s->cert = ssl_cert_dup(ctx->cert); 315 if (s->cert == NULL) 316 goto err; 317 } 318 else 319 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 320 321 s->read_ahead=ctx->read_ahead; 322 s->msg_callback=ctx->msg_callback; 323 s->msg_callback_arg=ctx->msg_callback_arg; 324 s->verify_mode=ctx->verify_mode; 325#if 0 326 s->verify_depth=ctx->verify_depth; 327#endif 328 s->sid_ctx_length=ctx->sid_ctx_length; 329 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 330 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 331 s->verify_callback=ctx->default_verify_callback; 332 s->generate_session_id=ctx->generate_session_id; 333 334 s->param = X509_VERIFY_PARAM_new(); 335 if (!s->param) 336 goto err; 337 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 338#if 0 339 s->purpose = ctx->purpose; 340 s->trust = ctx->trust; 341#endif 342 s->quiet_shutdown=ctx->quiet_shutdown; 343 s->max_send_fragment = ctx->max_send_fragment; 344 345 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 346 s->ctx=ctx; 347#ifndef OPENSSL_NO_TLSEXT 348 s->tlsext_debug_cb = 0; 349 s->tlsext_debug_arg = NULL; 350 s->tlsext_ticket_expected = 0; 351 s->tlsext_status_type = -1; 352 s->tlsext_status_expected = 0; 353 s->tlsext_ocsp_ids = NULL; 354 s->tlsext_ocsp_exts = NULL; 355 s->tlsext_ocsp_resp = NULL; 356 s->tlsext_ocsp_resplen = -1; 357 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 358 s->initial_ctx=ctx; 359# ifndef OPENSSL_NO_NEXTPROTONEG 360 s->next_proto_negotiated = NULL; 361# endif 362#endif 363 364 s->verify_result=X509_V_OK; 365 366 s->method=ctx->method; 367 368 if (!s->method->ssl_new(s)) 369 goto err; 370 371 s->references=1; 372 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 373 374 SSL_clear(s); 375 376 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 377 378#ifndef OPENSSL_NO_PSK 379 s->psk_client_callback=ctx->psk_client_callback; 380 s->psk_server_callback=ctx->psk_server_callback; 381#endif 382 383 return(s); 384err: 385 if (s != NULL) 386 { 387 if (s->cert != NULL) 388 ssl_cert_free(s->cert); 389 if (s->ctx != NULL) 390 SSL_CTX_free(s->ctx); /* decrement reference count */ 391 OPENSSL_free(s); 392 } 393 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 394 return(NULL); 395 } 396 397int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 398 unsigned int sid_ctx_len) 399 { 400 if(sid_ctx_len > sizeof ctx->sid_ctx) 401 { 402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 403 return 0; 404 } 405 ctx->sid_ctx_length=sid_ctx_len; 406 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 407 408 return 1; 409 } 410 411int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 412 unsigned int sid_ctx_len) 413 { 414 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 415 { 416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 417 return 0; 418 } 419 ssl->sid_ctx_length=sid_ctx_len; 420 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 421 422 return 1; 423 } 424 425int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 426 { 427 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 428 ctx->generate_session_id = cb; 429 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 430 return 1; 431 } 432 433int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 434 { 435 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 436 ssl->generate_session_id = cb; 437 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 438 return 1; 439 } 440 441int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 442 unsigned int id_len) 443 { 444 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 445 * we can "construct" a session to give us the desired check - ie. to 446 * find if there's a session in the hash table that would conflict with 447 * any new session built out of this id/id_len and the ssl_version in 448 * use by this SSL. */ 449 SSL_SESSION r, *p; 450 451 if(id_len > sizeof r.session_id) 452 return 0; 453 454 r.ssl_version = ssl->version; 455 r.session_id_length = id_len; 456 memcpy(r.session_id, id, id_len); 457 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 458 * callback is calling us to check the uniqueness of a shorter ID, it 459 * must be compared as a padded-out ID because that is what it will be 460 * converted to when the callback has finished choosing it. */ 461 if((r.ssl_version == SSL2_VERSION) && 462 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 463 { 464 memset(r.session_id + id_len, 0, 465 SSL2_SSL_SESSION_ID_LENGTH - id_len); 466 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 467 } 468 469 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 470 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 471 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 472 return (p != NULL); 473 } 474 475int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 476 { 477 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 478 } 479 480int SSL_set_purpose(SSL *s, int purpose) 481 { 482 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 483 } 484 485int SSL_CTX_set_trust(SSL_CTX *s, int trust) 486 { 487 return X509_VERIFY_PARAM_set_trust(s->param, trust); 488 } 489 490int SSL_set_trust(SSL *s, int trust) 491 { 492 return X509_VERIFY_PARAM_set_trust(s->param, trust); 493 } 494 495int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 496 { 497 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 498 } 499 500int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 501 { 502 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 503 } 504 505void SSL_free(SSL *s) 506 { 507 int i; 508 509 if(s == NULL) 510 return; 511 512 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 513#ifdef REF_PRINT 514 REF_PRINT("SSL",s); 515#endif 516 if (i > 0) return; 517#ifdef REF_CHECK 518 if (i < 0) 519 { 520 fprintf(stderr,"SSL_free, bad reference count\n"); 521 abort(); /* ok */ 522 } 523#endif 524 525 if (s->param) 526 X509_VERIFY_PARAM_free(s->param); 527 528 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 529 530 if (s->bbio != NULL) 531 { 532 /* If the buffering BIO is in place, pop it off */ 533 if (s->bbio == s->wbio) 534 { 535 s->wbio=BIO_pop(s->wbio); 536 } 537 BIO_free(s->bbio); 538 s->bbio=NULL; 539 } 540 if (s->rbio != NULL) 541 BIO_free_all(s->rbio); 542 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 543 BIO_free_all(s->wbio); 544 545 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 546 547 /* add extra stuff */ 548 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 549 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 550 551 /* Make the next call work :-) */ 552 if (s->session != NULL) 553 { 554 ssl_clear_bad_session(s); 555 SSL_SESSION_free(s->session); 556 } 557 558 ssl_clear_cipher_ctx(s); 559 ssl_clear_hash_ctx(&s->read_hash); 560 ssl_clear_hash_ctx(&s->write_hash); 561 562 if (s->cert != NULL) ssl_cert_free(s->cert); 563 /* Free up if allocated */ 564 565#ifndef OPENSSL_NO_TLSEXT 566 if (s->tlsext_hostname) 567 OPENSSL_free(s->tlsext_hostname); 568 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx); 569#ifndef OPENSSL_NO_EC 570 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist); 571 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist); 572#endif /* OPENSSL_NO_EC */ 573 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input); 574 if (s->tlsext_ocsp_exts) 575 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 576 X509_EXTENSION_free); 577 if (s->tlsext_ocsp_ids) 578 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 579 if (s->tlsext_ocsp_resp) 580 OPENSSL_free(s->tlsext_ocsp_resp); 581#endif 582 583 if (s->client_CA != NULL) 584 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 585 586 if (s->method != NULL) s->method->ssl_free(s); 587 588 if (s->ctx) SSL_CTX_free(s->ctx); 589 590#ifndef OPENSSL_NO_KRB5 591 if (s->kssl_ctx != NULL) 592 kssl_ctx_free(s->kssl_ctx); 593#endif /* OPENSSL_NO_KRB5 */ 594 595#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 596 if (s->next_proto_negotiated) 597 OPENSSL_free(s->next_proto_negotiated); 598#endif 599 600#ifndef OPENSSL_NO_SRTP 601 if (s->srtp_profiles) 602 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 603#endif 604 605 OPENSSL_free(s); 606 } 607 608void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 609 { 610 /* If the output buffering BIO is still in place, remove it 611 */ 612 if (s->bbio != NULL) 613 { 614 if (s->wbio == s->bbio) 615 { 616 s->wbio=s->wbio->next_bio; 617 s->bbio->next_bio=NULL; 618 } 619 } 620 if ((s->rbio != NULL) && (s->rbio != rbio)) 621 BIO_free_all(s->rbio); 622 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 623 BIO_free_all(s->wbio); 624 s->rbio=rbio; 625 s->wbio=wbio; 626 } 627 628BIO *SSL_get_rbio(const SSL *s) 629 { return(s->rbio); } 630 631BIO *SSL_get_wbio(const SSL *s) 632 { return(s->wbio); } 633 634int SSL_get_fd(const SSL *s) 635 { 636 return(SSL_get_rfd(s)); 637 } 638 639int SSL_get_rfd(const SSL *s) 640 { 641 int ret= -1; 642 BIO *b,*r; 643 644 b=SSL_get_rbio(s); 645 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 646 if (r != NULL) 647 BIO_get_fd(r,&ret); 648 return(ret); 649 } 650 651int SSL_get_wfd(const SSL *s) 652 { 653 int ret= -1; 654 BIO *b,*r; 655 656 b=SSL_get_wbio(s); 657 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 658 if (r != NULL) 659 BIO_get_fd(r,&ret); 660 return(ret); 661 } 662 663#ifndef OPENSSL_NO_SOCK 664int SSL_set_fd(SSL *s,int fd) 665 { 666 int ret=0; 667 BIO *bio=NULL; 668 669 bio=BIO_new(BIO_s_socket()); 670 671 if (bio == NULL) 672 { 673 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 674 goto err; 675 } 676 BIO_set_fd(bio,fd,BIO_NOCLOSE); 677 SSL_set_bio(s,bio,bio); 678 ret=1; 679err: 680 return(ret); 681 } 682 683int SSL_set_wfd(SSL *s,int fd) 684 { 685 int ret=0; 686 BIO *bio=NULL; 687 688 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 689 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 690 { 691 bio=BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) 694 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 695 BIO_set_fd(bio,fd,BIO_NOCLOSE); 696 SSL_set_bio(s,SSL_get_rbio(s),bio); 697 } 698 else 699 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 700 ret=1; 701err: 702 return(ret); 703 } 704 705int SSL_set_rfd(SSL *s,int fd) 706 { 707 int ret=0; 708 BIO *bio=NULL; 709 710 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 711 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 712 { 713 bio=BIO_new(BIO_s_socket()); 714 715 if (bio == NULL) 716 { 717 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 718 goto err; 719 } 720 BIO_set_fd(bio,fd,BIO_NOCLOSE); 721 SSL_set_bio(s,bio,SSL_get_wbio(s)); 722 } 723 else 724 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 725 ret=1; 726err: 727 return(ret); 728 } 729#endif 730 731 732/* return length of latest Finished message we sent, copy to 'buf' */ 733size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 734 { 735 size_t ret = 0; 736 737 if (s->s3 != NULL) 738 { 739 ret = s->s3->tmp.finish_md_len; 740 if (count > ret) 741 count = ret; 742 memcpy(buf, s->s3->tmp.finish_md, count); 743 } 744 return ret; 745 } 746 747/* return length of latest Finished message we expected, copy to 'buf' */ 748size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 749 { 750 size_t ret = 0; 751 752 if (s->s3 != NULL) 753 { 754 ret = s->s3->tmp.peer_finish_md_len; 755 if (count > ret) 756 count = ret; 757 memcpy(buf, s->s3->tmp.peer_finish_md, count); 758 } 759 return ret; 760 } 761 762 763int SSL_get_verify_mode(const SSL *s) 764 { 765 return(s->verify_mode); 766 } 767 768int SSL_get_verify_depth(const SSL *s) 769 { 770 return X509_VERIFY_PARAM_get_depth(s->param); 771 } 772 773int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 774 { 775 return(s->verify_callback); 776 } 777 778int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 779 { 780 return(ctx->verify_mode); 781 } 782 783int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 784 { 785 return X509_VERIFY_PARAM_get_depth(ctx->param); 786 } 787 788int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 789 { 790 return(ctx->default_verify_callback); 791 } 792 793void SSL_set_verify(SSL *s,int mode, 794 int (*callback)(int ok,X509_STORE_CTX *ctx)) 795 { 796 s->verify_mode=mode; 797 if (callback != NULL) 798 s->verify_callback=callback; 799 } 800 801void SSL_set_verify_depth(SSL *s,int depth) 802 { 803 X509_VERIFY_PARAM_set_depth(s->param, depth); 804 } 805 806void SSL_set_read_ahead(SSL *s,int yes) 807 { 808 s->read_ahead=yes; 809 } 810 811int SSL_get_read_ahead(const SSL *s) 812 { 813 return(s->read_ahead); 814 } 815 816int SSL_pending(const SSL *s) 817 { 818 /* SSL_pending cannot work properly if read-ahead is enabled 819 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 820 * and it is impossible to fix since SSL_pending cannot report 821 * errors that may be observed while scanning the new data. 822 * (Note that SSL_pending() is often used as a boolean value, 823 * so we'd better not return -1.) 824 */ 825 return(s->method->ssl_pending(s)); 826 } 827 828X509 *SSL_get_peer_certificate(const SSL *s) 829 { 830 X509 *r; 831 832 if ((s == NULL) || (s->session == NULL)) 833 r=NULL; 834 else 835 r=s->session->peer; 836 837 if (r == NULL) return(r); 838 839 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 840 841 return(r); 842 } 843 844STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 845 { 846 STACK_OF(X509) *r; 847 848 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 849 r=NULL; 850 else 851 r=s->session->sess_cert->cert_chain; 852 853 /* If we are a client, cert_chain includes the peer's own 854 * certificate; if we are a server, it does not. */ 855 856 return(r); 857 } 858 859/* Now in theory, since the calling process own 't' it should be safe to 860 * modify. We need to be able to read f without being hassled */ 861void SSL_copy_session_id(SSL *t,const SSL *f) 862 { 863 CERT *tmp; 864 865 /* Do we need to to SSL locking? */ 866 SSL_set_session(t,SSL_get_session(f)); 867 868 /* what if we are setup as SSLv2 but want to talk SSLv3 or 869 * vice-versa */ 870 if (t->method != f->method) 871 { 872 t->method->ssl_free(t); /* cleanup current */ 873 t->method=f->method; /* change method */ 874 t->method->ssl_new(t); /* setup new */ 875 } 876 877 tmp=t->cert; 878 if (f->cert != NULL) 879 { 880 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 881 t->cert=f->cert; 882 } 883 else 884 t->cert=NULL; 885 if (tmp != NULL) ssl_cert_free(tmp); 886 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 887 } 888 889/* Fix this so it checks all the valid key/cert options */ 890int SSL_CTX_check_private_key(const SSL_CTX *ctx) 891 { 892 if ( (ctx == NULL) || 893 (ctx->cert == NULL) || 894 (ctx->cert->key->x509 == NULL)) 895 { 896 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 897 return(0); 898 } 899 if (ctx->cert->key->privatekey == NULL) 900 { 901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 902 return(0); 903 } 904 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 905 } 906 907/* Fix this function so that it takes an optional type parameter */ 908int SSL_check_private_key(const SSL *ssl) 909 { 910 if (ssl == NULL) 911 { 912 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 913 return(0); 914 } 915 if (ssl->cert == NULL) 916 { 917 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 918 return 0; 919 } 920 if (ssl->cert->key->x509 == NULL) 921 { 922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 923 return(0); 924 } 925 if (ssl->cert->key->privatekey == NULL) 926 { 927 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 928 return(0); 929 } 930 return(X509_check_private_key(ssl->cert->key->x509, 931 ssl->cert->key->privatekey)); 932 } 933 934int SSL_accept(SSL *s) 935 { 936 if (s->handshake_func == 0) 937 /* Not properly initialized yet */ 938 SSL_set_accept_state(s); 939 940 return(s->method->ssl_accept(s)); 941 } 942 943int SSL_connect(SSL *s) 944 { 945 if (s->handshake_func == 0) 946 /* Not properly initialized yet */ 947 SSL_set_connect_state(s); 948 949 return(s->method->ssl_connect(s)); 950 } 951 952long SSL_get_default_timeout(const SSL *s) 953 { 954 return(s->method->get_timeout()); 955 } 956 957int SSL_read(SSL *s,void *buf,int num) 958 { 959 if (s->handshake_func == 0) 960 { 961 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 962 return -1; 963 } 964 965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 966 { 967 s->rwstate=SSL_NOTHING; 968 return(0); 969 } 970 return(s->method->ssl_read(s,buf,num)); 971 } 972 973int SSL_peek(SSL *s,void *buf,int num) 974 { 975 if (s->handshake_func == 0) 976 { 977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 978 return -1; 979 } 980 981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 982 { 983 return(0); 984 } 985 return(s->method->ssl_peek(s,buf,num)); 986 } 987 988int SSL_write(SSL *s,const void *buf,int num) 989 { 990 if (s->handshake_func == 0) 991 { 992 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 993 return -1; 994 } 995 996 if (s->shutdown & SSL_SENT_SHUTDOWN) 997 { 998 s->rwstate=SSL_NOTHING; 999 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 1000 return(-1); 1001 } 1002 return(s->method->ssl_write(s,buf,num)); 1003 } 1004 1005int SSL_shutdown(SSL *s) 1006 { 1007 /* Note that this function behaves differently from what one might 1008 * expect. Return values are 0 for no success (yet), 1009 * 1 for success; but calling it once is usually not enough, 1010 * even if blocking I/O is used (see ssl3_shutdown). 1011 */ 1012 1013 if (s->handshake_func == 0) 1014 { 1015 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1016 return -1; 1017 } 1018 1019 if ((s != NULL) && !SSL_in_init(s)) 1020 return(s->method->ssl_shutdown(s)); 1021 else 1022 return(1); 1023 } 1024 1025int SSL_renegotiate(SSL *s) 1026 { 1027 if (s->renegotiate == 0) 1028 s->renegotiate=1; 1029 1030 s->new_session=1; 1031 1032 return(s->method->ssl_renegotiate(s)); 1033 } 1034 1035int SSL_renegotiate_abbreviated(SSL *s) 1036 { 1037 if (s->renegotiate == 0) 1038 s->renegotiate=1; 1039 1040 s->new_session=0; 1041 1042 return(s->method->ssl_renegotiate(s)); 1043 } 1044 1045int SSL_renegotiate_pending(SSL *s) 1046 { 1047 /* becomes true when negotiation is requested; 1048 * false again once a handshake has finished */ 1049 return (s->renegotiate != 0); 1050 } 1051 1052long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1053 { 1054 long l; 1055 1056 switch (cmd) 1057 { 1058 case SSL_CTRL_GET_READ_AHEAD: 1059 return(s->read_ahead); 1060 case SSL_CTRL_SET_READ_AHEAD: 1061 l=s->read_ahead; 1062 s->read_ahead=larg; 1063 return(l); 1064 1065 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1066 s->msg_callback_arg = parg; 1067 return 1; 1068 1069 case SSL_CTRL_OPTIONS: 1070 return(s->options|=larg); 1071 case SSL_CTRL_CLEAR_OPTIONS: 1072 return(s->options&=~larg); 1073 case SSL_CTRL_MODE: 1074 return(s->mode|=larg); 1075 case SSL_CTRL_CLEAR_MODE: 1076 return(s->mode &=~larg); 1077 case SSL_CTRL_GET_MAX_CERT_LIST: 1078 return(s->max_cert_list); 1079 case SSL_CTRL_SET_MAX_CERT_LIST: 1080 l=s->max_cert_list; 1081 s->max_cert_list=larg; 1082 return(l); 1083 case SSL_CTRL_SET_MTU: 1084#ifndef OPENSSL_NO_DTLS1 1085 if (larg < (long)dtls1_min_mtu()) 1086 return 0; 1087#endif 1088 1089 if (SSL_version(s) == DTLS1_VERSION || 1090 SSL_version(s) == DTLS1_BAD_VER) 1091 { 1092 s->d1->mtu = larg; 1093 return larg; 1094 } 1095 return 0; 1096 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1097 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1098 return 0; 1099 s->max_send_fragment = larg; 1100 return 1; 1101 case SSL_CTRL_GET_RI_SUPPORT: 1102 if (s->s3) 1103 return s->s3->send_connection_binding; 1104 else return 0; 1105 default: 1106 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1107 } 1108 } 1109 1110long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1111 { 1112 switch(cmd) 1113 { 1114 case SSL_CTRL_SET_MSG_CALLBACK: 1115 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1116 return 1; 1117 1118 default: 1119 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1120 } 1121 } 1122 1123LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1124 { 1125 return ctx->sessions; 1126 } 1127 1128long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1129 { 1130 long l; 1131 1132 switch (cmd) 1133 { 1134 case SSL_CTRL_GET_READ_AHEAD: 1135 return(ctx->read_ahead); 1136 case SSL_CTRL_SET_READ_AHEAD: 1137 l=ctx->read_ahead; 1138 ctx->read_ahead=larg; 1139 return(l); 1140 1141 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1142 ctx->msg_callback_arg = parg; 1143 return 1; 1144 1145 case SSL_CTRL_GET_MAX_CERT_LIST: 1146 return(ctx->max_cert_list); 1147 case SSL_CTRL_SET_MAX_CERT_LIST: 1148 l=ctx->max_cert_list; 1149 ctx->max_cert_list=larg; 1150 return(l); 1151 1152 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1153 l=ctx->session_cache_size; 1154 ctx->session_cache_size=larg; 1155 return(l); 1156 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1157 return(ctx->session_cache_size); 1158 case SSL_CTRL_SET_SESS_CACHE_MODE: 1159 l=ctx->session_cache_mode; 1160 ctx->session_cache_mode=larg; 1161 return(l); 1162 case SSL_CTRL_GET_SESS_CACHE_MODE: 1163 return(ctx->session_cache_mode); 1164 1165 case SSL_CTRL_SESS_NUMBER: 1166 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1167 case SSL_CTRL_SESS_CONNECT: 1168 return(ctx->stats.sess_connect); 1169 case SSL_CTRL_SESS_CONNECT_GOOD: 1170 return(ctx->stats.sess_connect_good); 1171 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1172 return(ctx->stats.sess_connect_renegotiate); 1173 case SSL_CTRL_SESS_ACCEPT: 1174 return(ctx->stats.sess_accept); 1175 case SSL_CTRL_SESS_ACCEPT_GOOD: 1176 return(ctx->stats.sess_accept_good); 1177 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1178 return(ctx->stats.sess_accept_renegotiate); 1179 case SSL_CTRL_SESS_HIT: 1180 return(ctx->stats.sess_hit); 1181 case SSL_CTRL_SESS_CB_HIT: 1182 return(ctx->stats.sess_cb_hit); 1183 case SSL_CTRL_SESS_MISSES: 1184 return(ctx->stats.sess_miss); 1185 case SSL_CTRL_SESS_TIMEOUTS: 1186 return(ctx->stats.sess_timeout); 1187 case SSL_CTRL_SESS_CACHE_FULL: 1188 return(ctx->stats.sess_cache_full); 1189 case SSL_CTRL_OPTIONS: 1190 return(ctx->options|=larg); 1191 case SSL_CTRL_CLEAR_OPTIONS: 1192 return(ctx->options&=~larg); 1193 case SSL_CTRL_MODE: 1194 return(ctx->mode|=larg); 1195 case SSL_CTRL_CLEAR_MODE: 1196 return(ctx->mode&=~larg); 1197 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1198 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1199 return 0; 1200 ctx->max_send_fragment = larg; 1201 return 1; 1202 default: 1203 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1204 } 1205 } 1206 1207long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1208 { 1209 switch(cmd) 1210 { 1211 case SSL_CTRL_SET_MSG_CALLBACK: 1212 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1213 return 1; 1214 1215 default: 1216 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1217 } 1218 } 1219 1220int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1221 { 1222 long l; 1223 1224 l=a->id-b->id; 1225 if (l == 0L) 1226 return(0); 1227 else 1228 return((l > 0)?1:-1); 1229 } 1230 1231int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1232 const SSL_CIPHER * const *bp) 1233 { 1234 long l; 1235 1236 l=(*ap)->id-(*bp)->id; 1237 if (l == 0L) 1238 return(0); 1239 else 1240 return((l > 0)?1:-1); 1241 } 1242 1243/** return a STACK of the ciphers available for the SSL and in order of 1244 * preference */ 1245STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1246 { 1247 if (s != NULL) 1248 { 1249 if (s->cipher_list != NULL) 1250 { 1251 return(s->cipher_list); 1252 } 1253 else if ((s->ctx != NULL) && 1254 (s->ctx->cipher_list != NULL)) 1255 { 1256 return(s->ctx->cipher_list); 1257 } 1258 } 1259 return(NULL); 1260 } 1261 1262/** return a STACK of the ciphers available for the SSL and in order of 1263 * algorithm id */ 1264STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1265 { 1266 if (s != NULL) 1267 { 1268 if (s->cipher_list_by_id != NULL) 1269 { 1270 return(s->cipher_list_by_id); 1271 } 1272 else if ((s->ctx != NULL) && 1273 (s->ctx->cipher_list_by_id != NULL)) 1274 { 1275 return(s->ctx->cipher_list_by_id); 1276 } 1277 } 1278 return(NULL); 1279 } 1280 1281/** The old interface to get the same thing as SSL_get_ciphers() */ 1282const char *SSL_get_cipher_list(const SSL *s,int n) 1283 { 1284 SSL_CIPHER *c; 1285 STACK_OF(SSL_CIPHER) *sk; 1286 1287 if (s == NULL) return(NULL); 1288 sk=SSL_get_ciphers(s); 1289 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1290 return(NULL); 1291 c=sk_SSL_CIPHER_value(sk,n); 1292 if (c == NULL) return(NULL); 1293 return(c->name); 1294 } 1295 1296/** specify the ciphers to be used by default by the SSL_CTX */ 1297int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1298 { 1299 STACK_OF(SSL_CIPHER) *sk; 1300 1301 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1302 &ctx->cipher_list_by_id,str); 1303 /* ssl_create_cipher_list may return an empty stack if it 1304 * was unable to find a cipher matching the given rule string 1305 * (for example if the rule string specifies a cipher which 1306 * has been disabled). This is not an error as far as 1307 * ssl_create_cipher_list is concerned, and hence 1308 * ctx->cipher_list and ctx->cipher_list_by_id has been 1309 * updated. */ 1310 if (sk == NULL) 1311 return 0; 1312 else if (sk_SSL_CIPHER_num(sk) == 0) 1313 { 1314 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1315 return 0; 1316 } 1317 return 1; 1318 } 1319 1320/** specify the ciphers to be used by the SSL */ 1321int SSL_set_cipher_list(SSL *s,const char *str) 1322 { 1323 STACK_OF(SSL_CIPHER) *sk; 1324 1325 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1326 &s->cipher_list_by_id,str); 1327 /* see comment in SSL_CTX_set_cipher_list */ 1328 if (sk == NULL) 1329 return 0; 1330 else if (sk_SSL_CIPHER_num(sk) == 0) 1331 { 1332 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1333 return 0; 1334 } 1335 return 1; 1336 } 1337 1338/* works well for SSLv2, not so good for SSLv3 */ 1339char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1340 { 1341 char *p; 1342 STACK_OF(SSL_CIPHER) *sk; 1343 SSL_CIPHER *c; 1344 int i; 1345 1346 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1347 (len < 2)) 1348 return(NULL); 1349 1350 p=buf; 1351 sk=s->session->ciphers; 1352 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1353 { 1354 int n; 1355 1356 c=sk_SSL_CIPHER_value(sk,i); 1357 n=strlen(c->name); 1358 if (n+1 > len) 1359 { 1360 if (p != buf) 1361 --p; 1362 *p='\0'; 1363 return buf; 1364 } 1365 strcpy(p,c->name); 1366 p+=n; 1367 *(p++)=':'; 1368 len-=n+1; 1369 } 1370 p[-1]='\0'; 1371 return(buf); 1372 } 1373 1374int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1375 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1376 { 1377 int i,j=0; 1378 SSL_CIPHER *c; 1379 unsigned char *q; 1380#ifndef OPENSSL_NO_KRB5 1381 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1382#endif /* OPENSSL_NO_KRB5 */ 1383 1384 if (sk == NULL) return(0); 1385 q=p; 1386 if (put_cb == NULL) 1387 put_cb = s->method->put_cipher_by_char; 1388 1389 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1390 { 1391 c=sk_SSL_CIPHER_value(sk,i); 1392 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1393 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1394 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1395 continue; 1396#ifndef OPENSSL_NO_KRB5 1397 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1398 nokrb5) 1399 continue; 1400#endif /* OPENSSL_NO_KRB5 */ 1401#ifndef OPENSSL_NO_PSK 1402 /* with PSK there must be client callback set */ 1403 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1404 s->psk_client_callback == NULL) 1405 continue; 1406#endif /* OPENSSL_NO_PSK */ 1407#ifndef OPENSSL_NO_SRP 1408 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) && 1409 !(s->srp_ctx.srp_Mask & SSL_kSRP)) 1410 continue; 1411#endif /* OPENSSL_NO_SRP */ 1412 j = put_cb(c,p); 1413 p+=j; 1414 } 1415 /* If p == q, no ciphers; caller indicates an error. 1416 * Otherwise, add applicable SCSVs. */ 1417 if (p != q) 1418 { 1419 if (!s->renegotiate) 1420 { 1421 static SSL_CIPHER scsv = 1422 { 1423 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1424 }; 1425 j = put_cb(&scsv,p); 1426 p+=j; 1427#ifdef OPENSSL_RI_DEBUG 1428 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1429#endif 1430 } 1431 1432 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) 1433 { 1434 static SSL_CIPHER scsv = 1435 { 1436 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1437 }; 1438 j = put_cb(&scsv,p); 1439 p+=j; 1440 } 1441 } 1442 1443 return(p-q); 1444 } 1445 1446STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1447 STACK_OF(SSL_CIPHER) **skp) 1448 { 1449 const SSL_CIPHER *c; 1450 STACK_OF(SSL_CIPHER) *sk; 1451 int i,n; 1452 1453 if (s->s3) 1454 s->s3->send_connection_binding = 0; 1455 1456 n=ssl_put_cipher_by_char(s,NULL,NULL); 1457 if (n == 0 || (num%n) != 0) 1458 { 1459 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1460 return(NULL); 1461 } 1462 if ((skp == NULL) || (*skp == NULL)) 1463 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1464 else 1465 { 1466 sk= *skp; 1467 sk_SSL_CIPHER_zero(sk); 1468 } 1469 1470 for (i=0; i<num; i+=n) 1471 { 1472 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1473 if (s->s3 && (n != 3 || !p[0]) && 1474 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1475 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1476 { 1477 /* SCSV fatal if renegotiating */ 1478 if (s->renegotiate) 1479 { 1480 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1481 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1482 goto err; 1483 } 1484 s->s3->send_connection_binding = 1; 1485 p += n; 1486#ifdef OPENSSL_RI_DEBUG 1487 fprintf(stderr, "SCSV received by server\n"); 1488#endif 1489 continue; 1490 } 1491 1492 /* Check for TLS_FALLBACK_SCSV */ 1493 if ((n != 3 || !p[0]) && 1494 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1495 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) 1496 { 1497 /* The SCSV indicates that the client previously tried a higher version. 1498 * Fail if the current version is an unexpected downgrade. */ 1499 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) 1500 { 1501 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK); 1502 if (s->s3) 1503 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK); 1504 goto err; 1505 } 1506 continue; 1507 } 1508 1509 c=ssl_get_cipher_by_char(s,p); 1510 p+=n; 1511 if (c != NULL) 1512 { 1513 if (!sk_SSL_CIPHER_push(sk,c)) 1514 { 1515 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1516 goto err; 1517 } 1518 } 1519 } 1520 1521 if (skp != NULL) 1522 *skp=sk; 1523 return(sk); 1524err: 1525 if ((skp == NULL) || (*skp == NULL)) 1526 sk_SSL_CIPHER_free(sk); 1527 return(NULL); 1528 } 1529 1530 1531#ifndef OPENSSL_NO_TLSEXT 1532/** return a servername extension value if provided in Client Hello, or NULL. 1533 * So far, only host_name types are defined (RFC 3546). 1534 */ 1535 1536const char *SSL_get_servername(const SSL *s, const int type) 1537 { 1538 if (type != TLSEXT_NAMETYPE_host_name) 1539 return NULL; 1540 1541 return s->session && !s->tlsext_hostname ? 1542 s->session->tlsext_hostname : 1543 s->tlsext_hostname; 1544 } 1545 1546int SSL_get_servername_type(const SSL *s) 1547 { 1548 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1549 return TLSEXT_NAMETYPE_host_name; 1550 return -1; 1551 } 1552 1553# ifndef OPENSSL_NO_NEXTPROTONEG 1554/* SSL_select_next_proto implements the standard protocol selection. It is 1555 * expected that this function is called from the callback set by 1556 * SSL_CTX_set_next_proto_select_cb. 1557 * 1558 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1559 * strings. The length byte itself is not included in the length. A byte 1560 * string of length 0 is invalid. No byte string may be truncated. 1561 * 1562 * The current, but experimental algorithm for selecting the protocol is: 1563 * 1564 * 1) If the server doesn't support NPN then this is indicated to the 1565 * callback. In this case, the client application has to abort the connection 1566 * or have a default application level protocol. 1567 * 1568 * 2) If the server supports NPN, but advertises an empty list then the 1569 * client selects the first protcol in its list, but indicates via the 1570 * API that this fallback case was enacted. 1571 * 1572 * 3) Otherwise, the client finds the first protocol in the server's list 1573 * that it supports and selects this protocol. This is because it's 1574 * assumed that the server has better information about which protocol 1575 * a client should use. 1576 * 1577 * 4) If the client doesn't support any of the server's advertised 1578 * protocols, then this is treated the same as case 2. 1579 * 1580 * It returns either 1581 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1582 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1583 */ 1584int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len) 1585 { 1586 unsigned int i, j; 1587 const unsigned char *result; 1588 int status = OPENSSL_NPN_UNSUPPORTED; 1589 1590 /* For each protocol in server preference order, see if we support it. */ 1591 for (i = 0; i < server_len; ) 1592 { 1593 for (j = 0; j < client_len; ) 1594 { 1595 if (server[i] == client[j] && 1596 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1597 { 1598 /* We found a match */ 1599 result = &server[i]; 1600 status = OPENSSL_NPN_NEGOTIATED; 1601 goto found; 1602 } 1603 j += client[j]; 1604 j++; 1605 } 1606 i += server[i]; 1607 i++; 1608 } 1609 1610 /* There's no overlap between our protocols and the server's list. */ 1611 result = client; 1612 status = OPENSSL_NPN_NO_OVERLAP; 1613 1614 found: 1615 *out = (unsigned char *) result + 1; 1616 *outlen = result[0]; 1617 return status; 1618 } 1619 1620/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1621 * requested protocol for this connection and returns 0. If the client didn't 1622 * request any protocol, then *data is set to NULL. 1623 * 1624 * Note that the client can request any protocol it chooses. The value returned 1625 * from this function need not be a member of the list of supported protocols 1626 * provided by the callback. 1627 */ 1628void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1629 { 1630 *data = s->next_proto_negotiated; 1631 if (!*data) { 1632 *len = 0; 1633 } else { 1634 *len = s->next_proto_negotiated_len; 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. Otherwise, no 1646 * such extension will be included in the ServerHello. */ 1647void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1648 { 1649 ctx->next_protos_advertised_cb = cb; 1650 ctx->next_protos_advertised_cb_arg = arg; 1651 } 1652 1653/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1654 * client needs to select a protocol from the server's provided list. |out| 1655 * must be set to point to the selected protocol (which may be within |in|). 1656 * The length of the protocol name must be written into |outlen|. The server's 1657 * advertised protocols are provided in |in| and |inlen|. The callback can 1658 * assume that |in| is syntactically valid. 1659 * 1660 * The client must select a protocol. It is fatal to the connection if this 1661 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1662 */ 1663void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1664 { 1665 ctx->next_proto_select_cb = cb; 1666 ctx->next_proto_select_cb_arg = arg; 1667 } 1668# endif 1669#endif 1670 1671int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1672 const char *label, size_t llen, const unsigned char *p, size_t plen, 1673 int use_context) 1674 { 1675 if (s->version < TLS1_VERSION) 1676 return -1; 1677 1678 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1679 llen, p, plen, 1680 use_context); 1681 } 1682 1683static unsigned long ssl_session_hash(const SSL_SESSION *a) 1684 { 1685 unsigned long l; 1686 1687 l=(unsigned long) 1688 ((unsigned int) a->session_id[0] )| 1689 ((unsigned int) a->session_id[1]<< 8L)| 1690 ((unsigned long)a->session_id[2]<<16L)| 1691 ((unsigned long)a->session_id[3]<<24L); 1692 return(l); 1693 } 1694 1695/* NB: If this function (or indeed the hash function which uses a sort of 1696 * coarser function than this one) is changed, ensure 1697 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1698 * able to construct an SSL_SESSION that will collide with any existing session 1699 * with a matching session ID. */ 1700static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1701 { 1702 if (a->ssl_version != b->ssl_version) 1703 return(1); 1704 if (a->session_id_length != b->session_id_length) 1705 return(1); 1706 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1707 } 1708 1709/* These wrapper functions should remain rather than redeclaring 1710 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1711 * variable. The reason is that the functions aren't static, they're exposed via 1712 * ssl.h. */ 1713static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1714static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1715 1716SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1717 { 1718 SSL_CTX *ret=NULL; 1719 1720 if (meth == NULL) 1721 { 1722 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1723 return(NULL); 1724 } 1725 1726#ifdef OPENSSL_FIPS 1727 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1728 { 1729 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1730 return NULL; 1731 } 1732#endif 1733 1734 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1735 { 1736 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1737 goto err; 1738 } 1739 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1740 if (ret == NULL) 1741 goto err; 1742 1743 memset(ret,0,sizeof(SSL_CTX)); 1744 1745 ret->method=meth; 1746 1747 ret->cert_store=NULL; 1748 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1749 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1750 ret->session_cache_head=NULL; 1751 ret->session_cache_tail=NULL; 1752 1753 /* We take the system default */ 1754 ret->session_timeout=meth->get_timeout(); 1755 1756 ret->new_session_cb=0; 1757 ret->remove_session_cb=0; 1758 ret->get_session_cb=0; 1759 ret->generate_session_id=0; 1760 1761 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1762 1763 ret->references=1; 1764 ret->quiet_shutdown=0; 1765 1766/* ret->cipher=NULL;*/ 1767/* ret->s2->challenge=NULL; 1768 ret->master_key=NULL; 1769 ret->key_arg=NULL; 1770 ret->s2->conn_id=NULL; */ 1771 1772 ret->info_callback=NULL; 1773 1774 ret->app_verify_callback=0; 1775 ret->app_verify_arg=NULL; 1776 1777 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1778 ret->read_ahead=0; 1779 ret->msg_callback=0; 1780 ret->msg_callback_arg=NULL; 1781 ret->verify_mode=SSL_VERIFY_NONE; 1782#if 0 1783 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1784#endif 1785 ret->sid_ctx_length=0; 1786 ret->default_verify_callback=NULL; 1787 if ((ret->cert=ssl_cert_new()) == NULL) 1788 goto err; 1789 1790 ret->default_passwd_callback=0; 1791 ret->default_passwd_callback_userdata=NULL; 1792 ret->client_cert_cb=0; 1793 ret->app_gen_cookie_cb=0; 1794 ret->app_verify_cookie_cb=0; 1795 1796 ret->sessions=lh_SSL_SESSION_new(); 1797 if (ret->sessions == NULL) goto err; 1798 ret->cert_store=X509_STORE_new(); 1799 if (ret->cert_store == NULL) goto err; 1800 1801 ssl_create_cipher_list(ret->method, 1802 &ret->cipher_list,&ret->cipher_list_by_id, 1803 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1804 if (ret->cipher_list == NULL 1805 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1806 { 1807 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1808 goto err2; 1809 } 1810 1811 ret->param = X509_VERIFY_PARAM_new(); 1812 if (!ret->param) 1813 goto err; 1814 1815 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1816 { 1817 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1818 goto err2; 1819 } 1820 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1821 { 1822 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1823 goto err2; 1824 } 1825 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1826 { 1827 SSLerr(SSL_F_SSL_CTX_NEW,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 ret->comp_methods=SSL_COMP_get_compression_methods(); 1838 1839 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1840 1841#ifndef OPENSSL_NO_TLSEXT 1842 ret->tlsext_servername_callback = 0; 1843 ret->tlsext_servername_arg = NULL; 1844 /* Setup RFC4507 ticket keys */ 1845 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1846 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1847 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1848 ret->options |= SSL_OP_NO_TICKET; 1849 1850 ret->tlsext_status_cb = 0; 1851 ret->tlsext_status_arg = NULL; 1852 1853# ifndef OPENSSL_NO_NEXTPROTONEG 1854 ret->next_protos_advertised_cb = 0; 1855 ret->next_proto_select_cb = 0; 1856# endif 1857#endif 1858#ifndef OPENSSL_NO_PSK 1859 ret->psk_identity_hint=NULL; 1860 ret->psk_client_callback=NULL; 1861 ret->psk_server_callback=NULL; 1862#endif 1863#ifndef OPENSSL_NO_SRP 1864 SSL_CTX_SRP_CTX_init(ret); 1865#endif 1866#ifndef OPENSSL_NO_BUF_FREELISTS 1867 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1868 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1869 if (!ret->rbuf_freelist) 1870 goto err; 1871 ret->rbuf_freelist->chunklen = 0; 1872 ret->rbuf_freelist->len = 0; 1873 ret->rbuf_freelist->head = NULL; 1874 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1875 if (!ret->wbuf_freelist) 1876 { 1877 OPENSSL_free(ret->rbuf_freelist); 1878 goto err; 1879 } 1880 ret->wbuf_freelist->chunklen = 0; 1881 ret->wbuf_freelist->len = 0; 1882 ret->wbuf_freelist->head = NULL; 1883#endif 1884#ifndef OPENSSL_NO_ENGINE 1885 ret->client_cert_engine = NULL; 1886#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1887#define eng_strx(x) #x 1888#define eng_str(x) eng_strx(x) 1889 /* Use specific client engine automatically... ignore errors */ 1890 { 1891 ENGINE *eng; 1892 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1893 if (!eng) 1894 { 1895 ERR_clear_error(); 1896 ENGINE_load_builtin_engines(); 1897 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1898 } 1899 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1900 ERR_clear_error(); 1901 } 1902#endif 1903#endif 1904 /* Default is to connect to non-RI servers. When RI is more widely 1905 * deployed might change this. 1906 */ 1907 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1908 1909 return(ret); 1910err: 1911 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1912err2: 1913 if (ret != NULL) SSL_CTX_free(ret); 1914 return(NULL); 1915 } 1916 1917#if 0 1918static void SSL_COMP_free(SSL_COMP *comp) 1919 { OPENSSL_free(comp); } 1920#endif 1921 1922#ifndef OPENSSL_NO_BUF_FREELISTS 1923static void 1924ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1925 { 1926 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1927 for (ent = list->head; ent; ent = next) 1928 { 1929 next = ent->next; 1930 OPENSSL_free(ent); 1931 } 1932 OPENSSL_free(list); 1933 } 1934#endif 1935 1936void SSL_CTX_free(SSL_CTX *a) 1937 { 1938 int i; 1939 1940 if (a == NULL) return; 1941 1942 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1943#ifdef REF_PRINT 1944 REF_PRINT("SSL_CTX",a); 1945#endif 1946 if (i > 0) return; 1947#ifdef REF_CHECK 1948 if (i < 0) 1949 { 1950 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1951 abort(); /* ok */ 1952 } 1953#endif 1954 1955 if (a->param) 1956 X509_VERIFY_PARAM_free(a->param); 1957 1958 /* 1959 * Free internal session cache. However: the remove_cb() may reference 1960 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1961 * after the sessions were flushed. 1962 * As the ex_data handling routines might also touch the session cache, 1963 * the most secure solution seems to be: empty (flush) the cache, then 1964 * free ex_data, then finally free the cache. 1965 * (See ticket [openssl.org #212].) 1966 */ 1967 if (a->sessions != NULL) 1968 SSL_CTX_flush_sessions(a,0); 1969 1970 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1971 1972 if (a->sessions != NULL) 1973 lh_SSL_SESSION_free(a->sessions); 1974 1975 if (a->cert_store != NULL) 1976 X509_STORE_free(a->cert_store); 1977 if (a->cipher_list != NULL) 1978 sk_SSL_CIPHER_free(a->cipher_list); 1979 if (a->cipher_list_by_id != NULL) 1980 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1981 if (a->cert != NULL) 1982 ssl_cert_free(a->cert); 1983 if (a->client_CA != NULL) 1984 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1985 if (a->extra_certs != NULL) 1986 sk_X509_pop_free(a->extra_certs,X509_free); 1987#if 0 /* This should never be done, since it removes a global database */ 1988 if (a->comp_methods != NULL) 1989 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1990#else 1991 a->comp_methods = NULL; 1992#endif 1993 1994#ifndef OPENSSL_NO_SRTP 1995 if (a->srtp_profiles) 1996 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1997#endif 1998 1999#ifndef OPENSSL_NO_PSK 2000 if (a->psk_identity_hint) 2001 OPENSSL_free(a->psk_identity_hint); 2002#endif 2003#ifndef OPENSSL_NO_SRP 2004 SSL_CTX_SRP_CTX_free(a); 2005#endif 2006#ifndef OPENSSL_NO_ENGINE 2007 if (a->client_cert_engine) 2008 ENGINE_finish(a->client_cert_engine); 2009#endif 2010 2011#ifndef OPENSSL_NO_BUF_FREELISTS 2012 if (a->wbuf_freelist) 2013 ssl_buf_freelist_free(a->wbuf_freelist); 2014 if (a->rbuf_freelist) 2015 ssl_buf_freelist_free(a->rbuf_freelist); 2016#endif 2017 2018 OPENSSL_free(a); 2019 } 2020 2021void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2022 { 2023 ctx->default_passwd_callback=cb; 2024 } 2025 2026void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 2027 { 2028 ctx->default_passwd_callback_userdata=u; 2029 } 2030 2031void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 2032 { 2033 ctx->app_verify_callback=cb; 2034 ctx->app_verify_arg=arg; 2035 } 2036 2037void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2038 { 2039 ctx->verify_mode=mode; 2040 ctx->default_verify_callback=cb; 2041 } 2042 2043void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2044 { 2045 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2046 } 2047 2048void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2049 { 2050 CERT_PKEY *cpk; 2051 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2052 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2053 int rsa_tmp_export,dh_tmp_export,kl; 2054 unsigned long mask_k,mask_a,emask_k,emask_a; 2055 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2056#ifndef OPENSSL_NO_ECDH 2057 int have_ecdh_tmp; 2058#endif 2059 X509 *x = NULL; 2060 EVP_PKEY *ecc_pkey = NULL; 2061 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2062 2063 if (c == NULL) return; 2064 2065 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2066 2067#ifndef OPENSSL_NO_RSA 2068 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2069 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2070 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2071#else 2072 rsa_tmp=rsa_tmp_export=0; 2073#endif 2074#ifndef OPENSSL_NO_DH 2075 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2076 dh_tmp_export=(c->dh_tmp_cb != NULL || 2077 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2078#else 2079 dh_tmp=dh_tmp_export=0; 2080#endif 2081 2082#ifndef OPENSSL_NO_ECDH 2083 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2084#endif 2085 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2086 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2087 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2088 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2089 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2090 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2091 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2092 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2093 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2094 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2095 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2096/* FIX THIS EAY EAY EAY */ 2097 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2098 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2099 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2100 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2101 mask_k=0; 2102 mask_a=0; 2103 emask_k=0; 2104 emask_a=0; 2105 2106 2107 2108#ifdef CIPHER_DEBUG 2109 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2110 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2111 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2112#endif 2113 2114 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2115 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2116 mask_k |= SSL_kGOST; 2117 mask_a |= SSL_aGOST01; 2118 } 2119 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2120 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2121 mask_k |= SSL_kGOST; 2122 mask_a |= SSL_aGOST94; 2123 } 2124 2125 if (rsa_enc || (rsa_tmp && rsa_sign)) 2126 mask_k|=SSL_kRSA; 2127 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2128 emask_k|=SSL_kRSA; 2129 2130#if 0 2131 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2132 if ( (dh_tmp || dh_rsa || dh_dsa) && 2133 (rsa_enc || rsa_sign || dsa_sign)) 2134 mask_k|=SSL_kEDH; 2135 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2136 (rsa_enc || rsa_sign || dsa_sign)) 2137 emask_k|=SSL_kEDH; 2138#endif 2139 2140 if (dh_tmp_export) 2141 emask_k|=SSL_kEDH; 2142 2143 if (dh_tmp) 2144 mask_k|=SSL_kEDH; 2145 2146 if (dh_rsa) mask_k|=SSL_kDHr; 2147 if (dh_rsa_export) emask_k|=SSL_kDHr; 2148 2149 if (dh_dsa) mask_k|=SSL_kDHd; 2150 if (dh_dsa_export) emask_k|=SSL_kDHd; 2151 2152 if (rsa_enc || rsa_sign) 2153 { 2154 mask_a|=SSL_aRSA; 2155 emask_a|=SSL_aRSA; 2156 } 2157 2158 if (dsa_sign) 2159 { 2160 mask_a|=SSL_aDSS; 2161 emask_a|=SSL_aDSS; 2162 } 2163 2164 mask_a|=SSL_aNULL; 2165 emask_a|=SSL_aNULL; 2166 2167#ifndef OPENSSL_NO_KRB5 2168 mask_k|=SSL_kKRB5; 2169 mask_a|=SSL_aKRB5; 2170 emask_k|=SSL_kKRB5; 2171 emask_a|=SSL_aKRB5; 2172#endif 2173 2174 /* An ECC certificate may be usable for ECDH and/or 2175 * ECDSA cipher suites depending on the key usage extension. 2176 */ 2177 if (have_ecc_cert) 2178 { 2179 /* This call populates extension flags (ex_flags) */ 2180 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2181 X509_check_purpose(x, -1, 0); 2182 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2183 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2184 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2185 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2186 ecc_pkey = X509_get_pubkey(x); 2187 ecc_pkey_size = (ecc_pkey != NULL) ? 2188 EVP_PKEY_bits(ecc_pkey) : 0; 2189 EVP_PKEY_free(ecc_pkey); 2190 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2191 { 2192 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2193 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2194 } 2195#ifndef OPENSSL_NO_ECDH 2196 if (ecdh_ok) 2197 { 2198 2199 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2200 { 2201 mask_k|=SSL_kECDHr; 2202 mask_a|=SSL_aECDH; 2203 if (ecc_pkey_size <= 163) 2204 { 2205 emask_k|=SSL_kECDHr; 2206 emask_a|=SSL_aECDH; 2207 } 2208 } 2209 2210 if (pk_nid == NID_X9_62_id_ecPublicKey) 2211 { 2212 mask_k|=SSL_kECDHe; 2213 mask_a|=SSL_aECDH; 2214 if (ecc_pkey_size <= 163) 2215 { 2216 emask_k|=SSL_kECDHe; 2217 emask_a|=SSL_aECDH; 2218 } 2219 } 2220 } 2221#endif 2222#ifndef OPENSSL_NO_ECDSA 2223 if (ecdsa_ok) 2224 { 2225 mask_a|=SSL_aECDSA; 2226 emask_a|=SSL_aECDSA; 2227 } 2228#endif 2229 } 2230 2231#ifndef OPENSSL_NO_ECDH 2232 if (have_ecdh_tmp) 2233 { 2234 mask_k|=SSL_kEECDH; 2235 emask_k|=SSL_kEECDH; 2236 } 2237#endif 2238 2239#ifndef OPENSSL_NO_PSK 2240 mask_k |= SSL_kPSK; 2241 mask_a |= SSL_aPSK; 2242 emask_k |= SSL_kPSK; 2243 emask_a |= SSL_aPSK; 2244#endif 2245 2246 c->mask_k=mask_k; 2247 c->mask_a=mask_a; 2248 c->export_mask_k=emask_k; 2249 c->export_mask_a=emask_a; 2250 c->valid=1; 2251 } 2252 2253/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2254#define ku_reject(x, usage) \ 2255 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2256 2257#ifndef OPENSSL_NO_EC 2258 2259int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2260 { 2261 unsigned long alg_k, alg_a; 2262 EVP_PKEY *pkey = NULL; 2263 int keysize = 0; 2264 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2265 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2266 2267 alg_k = cs->algorithm_mkey; 2268 alg_a = cs->algorithm_auth; 2269 2270 if (SSL_C_IS_EXPORT(cs)) 2271 { 2272 /* ECDH key length in export ciphers must be <= 163 bits */ 2273 pkey = X509_get_pubkey(x); 2274 if (pkey == NULL) return 0; 2275 keysize = EVP_PKEY_bits(pkey); 2276 EVP_PKEY_free(pkey); 2277 if (keysize > 163) return 0; 2278 } 2279 2280 /* This call populates the ex_flags field correctly */ 2281 X509_check_purpose(x, -1, 0); 2282 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2283 { 2284 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2285 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2286 } 2287 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2288 { 2289 /* key usage, if present, must allow key agreement */ 2290 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2291 { 2292 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2293 return 0; 2294 } 2295 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2296 { 2297 /* signature alg must be ECDSA */ 2298 if (pk_nid != NID_X9_62_id_ecPublicKey) 2299 { 2300 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2301 return 0; 2302 } 2303 } 2304 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2305 { 2306 /* signature alg must be RSA */ 2307 2308 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2309 { 2310 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2311 return 0; 2312 } 2313 } 2314 } 2315 if (alg_a & SSL_aECDSA) 2316 { 2317 /* key usage, if present, must allow signing */ 2318 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2319 { 2320 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2321 return 0; 2322 } 2323 } 2324 2325 return 1; /* all checks are ok */ 2326 } 2327 2328#endif 2329 2330/* THIS NEEDS CLEANING UP */ 2331CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2332 { 2333 unsigned long alg_k,alg_a; 2334 CERT *c; 2335 int i; 2336 2337 c=s->cert; 2338 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2339 2340 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2341 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2342 2343 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2344 { 2345 /* we don't need to look at SSL_kEECDH 2346 * since no certificate is needed for 2347 * anon ECDH and for authenticated 2348 * EECDH, the check for the auth 2349 * algorithm will set i correctly 2350 * NOTE: For ECDH-RSA, we need an ECC 2351 * not an RSA cert but for EECDH-RSA 2352 * we need an RSA cert. Placing the 2353 * checks for SSL_kECDH before RSA 2354 * checks ensures the correct cert is chosen. 2355 */ 2356 i=SSL_PKEY_ECC; 2357 } 2358 else if (alg_a & SSL_aECDSA) 2359 { 2360 i=SSL_PKEY_ECC; 2361 } 2362 else if (alg_k & SSL_kDHr) 2363 i=SSL_PKEY_DH_RSA; 2364 else if (alg_k & SSL_kDHd) 2365 i=SSL_PKEY_DH_DSA; 2366 else if (alg_a & SSL_aDSS) 2367 i=SSL_PKEY_DSA_SIGN; 2368 else if (alg_a & SSL_aRSA) 2369 { 2370 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2371 i=SSL_PKEY_RSA_SIGN; 2372 else 2373 i=SSL_PKEY_RSA_ENC; 2374 } 2375 else if (alg_a & SSL_aKRB5) 2376 { 2377 /* VRS something else here? */ 2378 return(NULL); 2379 } 2380 else if (alg_a & SSL_aGOST94) 2381 i=SSL_PKEY_GOST94; 2382 else if (alg_a & SSL_aGOST01) 2383 i=SSL_PKEY_GOST01; 2384 else /* if (alg_a & SSL_aNULL) */ 2385 { 2386 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2387 return(NULL); 2388 } 2389 2390 return c->pkeys + i; 2391 } 2392 2393X509 *ssl_get_server_send_cert(const SSL *s) 2394 { 2395 CERT_PKEY *cpk; 2396 cpk = ssl_get_server_send_pkey(s); 2397 if (!cpk) 2398 return NULL; 2399 return cpk->x509; 2400 } 2401 2402EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2403 { 2404 unsigned long alg_a; 2405 CERT *c; 2406 int idx = -1; 2407 2408 alg_a = cipher->algorithm_auth; 2409 c=s->cert; 2410 2411 if ((alg_a & SSL_aDSS) && 2412 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2413 idx = SSL_PKEY_DSA_SIGN; 2414 else if (alg_a & SSL_aRSA) 2415 { 2416 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2417 idx = SSL_PKEY_RSA_SIGN; 2418 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2419 idx = SSL_PKEY_RSA_ENC; 2420 } 2421 else if ((alg_a & SSL_aECDSA) && 2422 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2423 idx = SSL_PKEY_ECC; 2424 if (idx == -1) 2425 { 2426 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2427 return(NULL); 2428 } 2429 if (pmd) 2430 *pmd = c->pkeys[idx].digest; 2431 return c->pkeys[idx].privatekey; 2432 } 2433 2434void ssl_update_cache(SSL *s,int mode) 2435 { 2436 int i; 2437 2438 /* If the session_id_length is 0, we are not supposed to cache it, 2439 * and it would be rather hard to do anyway :-) */ 2440 if (s->session->session_id_length == 0) return; 2441 2442 i=s->session_ctx->session_cache_mode; 2443 if ((i & mode) && (!s->hit) 2444 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2445 || SSL_CTX_add_session(s->session_ctx,s->session)) 2446 && (s->session_ctx->new_session_cb != NULL)) 2447 { 2448 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2449 if (!s->session_ctx->new_session_cb(s,s->session)) 2450 SSL_SESSION_free(s->session); 2451 } 2452 2453 /* auto flush every 255 connections */ 2454 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2455 ((i & mode) == mode)) 2456 { 2457 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2458 ?s->session_ctx->stats.sess_connect_good 2459 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2460 { 2461 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2462 } 2463 } 2464 } 2465 2466const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2467 { 2468 return(s->method); 2469 } 2470 2471int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2472 { 2473 int conn= -1; 2474 int ret=1; 2475 2476 if (s->method != meth) 2477 { 2478 if (s->handshake_func != NULL) 2479 conn=(s->handshake_func == s->method->ssl_connect); 2480 2481 if (s->method->version == meth->version) 2482 s->method=meth; 2483 else 2484 { 2485 s->method->ssl_free(s); 2486 s->method=meth; 2487 ret=s->method->ssl_new(s); 2488 } 2489 2490 if (conn == 1) 2491 s->handshake_func=meth->ssl_connect; 2492 else if (conn == 0) 2493 s->handshake_func=meth->ssl_accept; 2494 } 2495 return(ret); 2496 } 2497 2498int SSL_get_error(const SSL *s,int i) 2499 { 2500 int reason; 2501 unsigned long l; 2502 BIO *bio; 2503 2504 if (i > 0) return(SSL_ERROR_NONE); 2505 2506 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2507 * etc, where we do encode the error */ 2508 if ((l=ERR_peek_error()) != 0) 2509 { 2510 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2511 return(SSL_ERROR_SYSCALL); 2512 else 2513 return(SSL_ERROR_SSL); 2514 } 2515 2516 if ((i < 0) && SSL_want_read(s)) 2517 { 2518 bio=SSL_get_rbio(s); 2519 if (BIO_should_read(bio)) 2520 return(SSL_ERROR_WANT_READ); 2521 else if (BIO_should_write(bio)) 2522 /* This one doesn't make too much sense ... We never try 2523 * to write to the rbio, and an application program where 2524 * rbio and wbio are separate couldn't even know what it 2525 * should wait for. 2526 * However if we ever set s->rwstate incorrectly 2527 * (so that we have SSL_want_read(s) instead of 2528 * SSL_want_write(s)) and rbio and wbio *are* the same, 2529 * this test works around that bug; so it might be safer 2530 * to keep it. */ 2531 return(SSL_ERROR_WANT_WRITE); 2532 else if (BIO_should_io_special(bio)) 2533 { 2534 reason=BIO_get_retry_reason(bio); 2535 if (reason == BIO_RR_CONNECT) 2536 return(SSL_ERROR_WANT_CONNECT); 2537 else if (reason == BIO_RR_ACCEPT) 2538 return(SSL_ERROR_WANT_ACCEPT); 2539 else 2540 return(SSL_ERROR_SYSCALL); /* unknown */ 2541 } 2542 } 2543 2544 if ((i < 0) && SSL_want_write(s)) 2545 { 2546 bio=SSL_get_wbio(s); 2547 if (BIO_should_write(bio)) 2548 return(SSL_ERROR_WANT_WRITE); 2549 else if (BIO_should_read(bio)) 2550 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2551 return(SSL_ERROR_WANT_READ); 2552 else if (BIO_should_io_special(bio)) 2553 { 2554 reason=BIO_get_retry_reason(bio); 2555 if (reason == BIO_RR_CONNECT) 2556 return(SSL_ERROR_WANT_CONNECT); 2557 else if (reason == BIO_RR_ACCEPT) 2558 return(SSL_ERROR_WANT_ACCEPT); 2559 else 2560 return(SSL_ERROR_SYSCALL); 2561 } 2562 } 2563 if ((i < 0) && SSL_want_x509_lookup(s)) 2564 { 2565 return(SSL_ERROR_WANT_X509_LOOKUP); 2566 } 2567 2568 if (i == 0) 2569 { 2570 if (s->version == SSL2_VERSION) 2571 { 2572 /* assume it is the socket being closed */ 2573 return(SSL_ERROR_ZERO_RETURN); 2574 } 2575 else 2576 { 2577 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2578 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2579 return(SSL_ERROR_ZERO_RETURN); 2580 } 2581 } 2582 return(SSL_ERROR_SYSCALL); 2583 } 2584 2585int SSL_do_handshake(SSL *s) 2586 { 2587 int ret=1; 2588 2589 if (s->handshake_func == NULL) 2590 { 2591 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2592 return(-1); 2593 } 2594 2595 s->method->ssl_renegotiate_check(s); 2596 2597 if (SSL_in_init(s) || SSL_in_before(s)) 2598 { 2599 ret=s->handshake_func(s); 2600 } 2601 return(ret); 2602 } 2603 2604/* For the next 2 functions, SSL_clear() sets shutdown and so 2605 * one of these calls will reset it */ 2606void SSL_set_accept_state(SSL *s) 2607 { 2608 s->server=1; 2609 s->shutdown=0; 2610 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2611 s->handshake_func=s->method->ssl_accept; 2612 /* clear the current cipher */ 2613 ssl_clear_cipher_ctx(s); 2614 ssl_clear_hash_ctx(&s->read_hash); 2615 ssl_clear_hash_ctx(&s->write_hash); 2616 } 2617 2618void SSL_set_connect_state(SSL *s) 2619 { 2620 s->server=0; 2621 s->shutdown=0; 2622 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2623 s->handshake_func=s->method->ssl_connect; 2624 /* clear the current cipher */ 2625 ssl_clear_cipher_ctx(s); 2626 ssl_clear_hash_ctx(&s->read_hash); 2627 ssl_clear_hash_ctx(&s->write_hash); 2628 } 2629 2630int ssl_undefined_function(SSL *s) 2631 { 2632 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2633 return(0); 2634 } 2635 2636int ssl_undefined_void_function(void) 2637 { 2638 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2639 return(0); 2640 } 2641 2642int ssl_undefined_const_function(const SSL *s) 2643 { 2644 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2645 return(0); 2646 } 2647 2648SSL_METHOD *ssl_bad_method(int ver) 2649 { 2650 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2651 return(NULL); 2652 } 2653 2654const char *SSL_get_version(const SSL *s) 2655 { 2656 if (s->version == TLS1_2_VERSION) 2657 return("TLSv1.2"); 2658 else if (s->version == TLS1_1_VERSION) 2659 return("TLSv1.1"); 2660 else if (s->version == TLS1_VERSION) 2661 return("TLSv1"); 2662 else if (s->version == SSL3_VERSION) 2663 return("SSLv3"); 2664 else if (s->version == SSL2_VERSION) 2665 return("SSLv2"); 2666 else 2667 return("unknown"); 2668 } 2669 2670SSL *SSL_dup(SSL *s) 2671 { 2672 STACK_OF(X509_NAME) *sk; 2673 X509_NAME *xn; 2674 SSL *ret; 2675 int i; 2676 2677 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2678 return(NULL); 2679 2680 ret->version = s->version; 2681 ret->type = s->type; 2682 ret->method = s->method; 2683 2684 if (s->session != NULL) 2685 { 2686 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2687 SSL_copy_session_id(ret,s); 2688 } 2689 else 2690 { 2691 /* No session has been established yet, so we have to expect 2692 * that s->cert or ret->cert will be changed later -- 2693 * they should not both point to the same object, 2694 * and thus we can't use SSL_copy_session_id. */ 2695 2696 ret->method->ssl_free(ret); 2697 ret->method = s->method; 2698 ret->method->ssl_new(ret); 2699 2700 if (s->cert != NULL) 2701 { 2702 if (ret->cert != NULL) 2703 { 2704 ssl_cert_free(ret->cert); 2705 } 2706 ret->cert = ssl_cert_dup(s->cert); 2707 if (ret->cert == NULL) 2708 goto err; 2709 } 2710 2711 SSL_set_session_id_context(ret, 2712 s->sid_ctx, s->sid_ctx_length); 2713 } 2714 2715 ret->options=s->options; 2716 ret->mode=s->mode; 2717 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2718 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2719 ret->msg_callback = s->msg_callback; 2720 ret->msg_callback_arg = s->msg_callback_arg; 2721 SSL_set_verify(ret,SSL_get_verify_mode(s), 2722 SSL_get_verify_callback(s)); 2723 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2724 ret->generate_session_id = s->generate_session_id; 2725 2726 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2727 2728 ret->debug=s->debug; 2729 2730 /* copy app data, a little dangerous perhaps */ 2731 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2732 goto err; 2733 2734 /* setup rbio, and wbio */ 2735 if (s->rbio != NULL) 2736 { 2737 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2738 goto err; 2739 } 2740 if (s->wbio != NULL) 2741 { 2742 if (s->wbio != s->rbio) 2743 { 2744 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2745 goto err; 2746 } 2747 else 2748 ret->wbio=ret->rbio; 2749 } 2750 ret->rwstate = s->rwstate; 2751 ret->in_handshake = s->in_handshake; 2752 ret->handshake_func = s->handshake_func; 2753 ret->server = s->server; 2754 ret->renegotiate = s->renegotiate; 2755 ret->new_session = s->new_session; 2756 ret->quiet_shutdown = s->quiet_shutdown; 2757 ret->shutdown=s->shutdown; 2758 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2759 ret->rstate=s->rstate; 2760 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2761 ret->hit=s->hit; 2762 2763 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2764 2765 /* dup the cipher_list and cipher_list_by_id stacks */ 2766 if (s->cipher_list != NULL) 2767 { 2768 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2769 goto err; 2770 } 2771 if (s->cipher_list_by_id != NULL) 2772 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2773 == NULL) 2774 goto err; 2775 2776 /* Dup the client_CA list */ 2777 if (s->client_CA != NULL) 2778 { 2779 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2780 ret->client_CA=sk; 2781 for (i=0; i<sk_X509_NAME_num(sk); i++) 2782 { 2783 xn=sk_X509_NAME_value(sk,i); 2784 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2785 { 2786 X509_NAME_free(xn); 2787 goto err; 2788 } 2789 } 2790 } 2791 2792 if (0) 2793 { 2794err: 2795 if (ret != NULL) SSL_free(ret); 2796 ret=NULL; 2797 } 2798 return(ret); 2799 } 2800 2801void ssl_clear_cipher_ctx(SSL *s) 2802 { 2803 if (s->enc_read_ctx != NULL) 2804 { 2805 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2806 OPENSSL_free(s->enc_read_ctx); 2807 s->enc_read_ctx=NULL; 2808 } 2809 if (s->enc_write_ctx != NULL) 2810 { 2811 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2812 OPENSSL_free(s->enc_write_ctx); 2813 s->enc_write_ctx=NULL; 2814 } 2815#ifndef OPENSSL_NO_COMP 2816 if (s->expand != NULL) 2817 { 2818 COMP_CTX_free(s->expand); 2819 s->expand=NULL; 2820 } 2821 if (s->compress != NULL) 2822 { 2823 COMP_CTX_free(s->compress); 2824 s->compress=NULL; 2825 } 2826#endif 2827 } 2828 2829/* Fix this function so that it takes an optional type parameter */ 2830X509 *SSL_get_certificate(const SSL *s) 2831 { 2832 if (s->server) 2833 return(ssl_get_server_send_cert(s)); 2834 else if (s->cert != NULL) 2835 return(s->cert->key->x509); 2836 else 2837 return(NULL); 2838 } 2839 2840/* Fix this function so that it takes an optional type parameter */ 2841EVP_PKEY *SSL_get_privatekey(SSL *s) 2842 { 2843 if (s->cert != NULL) 2844 return(s->cert->key->privatekey); 2845 else 2846 return(NULL); 2847 } 2848 2849const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2850 { 2851 if ((s->session != NULL) && (s->session->cipher != NULL)) 2852 return(s->session->cipher); 2853 return(NULL); 2854 } 2855#ifdef OPENSSL_NO_COMP 2856const void *SSL_get_current_compression(SSL *s) 2857 { 2858 return NULL; 2859 } 2860const void *SSL_get_current_expansion(SSL *s) 2861 { 2862 return NULL; 2863 } 2864#else 2865 2866const COMP_METHOD *SSL_get_current_compression(SSL *s) 2867 { 2868 if (s->compress != NULL) 2869 return(s->compress->meth); 2870 return(NULL); 2871 } 2872 2873const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2874 { 2875 if (s->expand != NULL) 2876 return(s->expand->meth); 2877 return(NULL); 2878 } 2879#endif 2880 2881int ssl_init_wbio_buffer(SSL *s,int push) 2882 { 2883 BIO *bbio; 2884 2885 if (s->bbio == NULL) 2886 { 2887 bbio=BIO_new(BIO_f_buffer()); 2888 if (bbio == NULL) return(0); 2889 s->bbio=bbio; 2890 } 2891 else 2892 { 2893 bbio=s->bbio; 2894 if (s->bbio == s->wbio) 2895 s->wbio=BIO_pop(s->wbio); 2896 } 2897 (void)BIO_reset(bbio); 2898/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2899 if (!BIO_set_read_buffer_size(bbio,1)) 2900 { 2901 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2902 return(0); 2903 } 2904 if (push) 2905 { 2906 if (s->wbio != bbio) 2907 s->wbio=BIO_push(bbio,s->wbio); 2908 } 2909 else 2910 { 2911 if (s->wbio == bbio) 2912 s->wbio=BIO_pop(bbio); 2913 } 2914 return(1); 2915 } 2916 2917void ssl_free_wbio_buffer(SSL *s) 2918 { 2919 if (s->bbio == NULL) return; 2920 2921 if (s->bbio == s->wbio) 2922 { 2923 /* remove buffering */ 2924 s->wbio=BIO_pop(s->wbio); 2925#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2926 assert(s->wbio != NULL); 2927#endif 2928 } 2929 BIO_free(s->bbio); 2930 s->bbio=NULL; 2931 } 2932 2933void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2934 { 2935 ctx->quiet_shutdown=mode; 2936 } 2937 2938int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2939 { 2940 return(ctx->quiet_shutdown); 2941 } 2942 2943void SSL_set_quiet_shutdown(SSL *s,int mode) 2944 { 2945 s->quiet_shutdown=mode; 2946 } 2947 2948int SSL_get_quiet_shutdown(const SSL *s) 2949 { 2950 return(s->quiet_shutdown); 2951 } 2952 2953void SSL_set_shutdown(SSL *s,int mode) 2954 { 2955 s->shutdown=mode; 2956 } 2957 2958int SSL_get_shutdown(const SSL *s) 2959 { 2960 return(s->shutdown); 2961 } 2962 2963int SSL_version(const SSL *s) 2964 { 2965 return(s->version); 2966 } 2967 2968SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2969 { 2970 return(ssl->ctx); 2971 } 2972 2973SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2974 { 2975 CERT *ocert = ssl->cert; 2976 if (ssl->ctx == ctx) 2977 return ssl->ctx; 2978#ifndef OPENSSL_NO_TLSEXT 2979 if (ctx == NULL) 2980 ctx = ssl->initial_ctx; 2981#endif 2982 ssl->cert = ssl_cert_dup(ctx->cert); 2983 if (ocert != NULL) 2984 { 2985 int i; 2986 /* Copy negotiated digests from original */ 2987 for (i = 0; i < SSL_PKEY_NUM; i++) 2988 { 2989 CERT_PKEY *cpk = ocert->pkeys + i; 2990 CERT_PKEY *rpk = ssl->cert->pkeys + i; 2991 rpk->digest = cpk->digest; 2992 } 2993 ssl_cert_free(ocert); 2994 } 2995 2996 /* 2997 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 2998 * so setter APIs must prevent invalid lengths from entering the system. 2999 */ 3000 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 3001 3002 /* 3003 * If the session ID context matches that of the parent SSL_CTX, 3004 * inherit it from the new SSL_CTX as well. If however the context does 3005 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 3006 * leave it unchanged. 3007 */ 3008 if ((ssl->ctx != NULL) && 3009 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 3010 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) 3011 { 3012 ssl->sid_ctx_length = ctx->sid_ctx_length; 3013 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3014 } 3015 3016 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 3017 if (ssl->ctx != NULL) 3018 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3019 ssl->ctx = ctx; 3020 3021 return(ssl->ctx); 3022 } 3023 3024#ifndef OPENSSL_NO_STDIO 3025int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3026 { 3027 return(X509_STORE_set_default_paths(ctx->cert_store)); 3028 } 3029 3030int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3031 const char *CApath) 3032 { 3033 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 3034 } 3035#endif 3036 3037void SSL_set_info_callback(SSL *ssl, 3038 void (*cb)(const SSL *ssl,int type,int val)) 3039 { 3040 ssl->info_callback=cb; 3041 } 3042 3043/* One compiler (Diab DCC) doesn't like argument names in returned 3044 function pointer. */ 3045void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 3046 { 3047 return ssl->info_callback; 3048 } 3049 3050int SSL_state(const SSL *ssl) 3051 { 3052 return(ssl->state); 3053 } 3054 3055void SSL_set_state(SSL *ssl, int state) 3056 { 3057 ssl->state = state; 3058 } 3059 3060void SSL_set_verify_result(SSL *ssl,long arg) 3061 { 3062 ssl->verify_result=arg; 3063 } 3064 3065long SSL_get_verify_result(const SSL *ssl) 3066 { 3067 return(ssl->verify_result); 3068 } 3069 3070int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3071 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3072 { 3073 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3074 new_func, dup_func, free_func); 3075 } 3076 3077int SSL_set_ex_data(SSL *s,int idx,void *arg) 3078 { 3079 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3080 } 3081 3082void *SSL_get_ex_data(const SSL *s,int idx) 3083 { 3084 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3085 } 3086 3087int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3088 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3089 { 3090 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3091 new_func, dup_func, free_func); 3092 } 3093 3094int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3095 { 3096 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3097 } 3098 3099void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3100 { 3101 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3102 } 3103 3104int ssl_ok(SSL *s) 3105 { 3106 return(1); 3107 } 3108 3109X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3110 { 3111 return(ctx->cert_store); 3112 } 3113 3114void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3115 { 3116 if (ctx->cert_store != NULL) 3117 X509_STORE_free(ctx->cert_store); 3118 ctx->cert_store=store; 3119 } 3120 3121int SSL_want(const SSL *s) 3122 { 3123 return(s->rwstate); 3124 } 3125 3126/*! 3127 * \brief Set the callback for generating temporary RSA keys. 3128 * \param ctx the SSL context. 3129 * \param cb the callback 3130 */ 3131 3132#ifndef OPENSSL_NO_RSA 3133void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3134 int is_export, 3135 int keylength)) 3136 { 3137 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3138 } 3139 3140void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3141 int is_export, 3142 int keylength)) 3143 { 3144 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3145 } 3146#endif 3147 3148#ifdef DOXYGEN 3149/*! 3150 * \brief The RSA temporary key callback function. 3151 * \param ssl the SSL session. 3152 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3153 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3154 * of the required key in bits. 3155 * \return the temporary RSA key. 3156 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3157 */ 3158 3159RSA *cb(SSL *ssl,int is_export,int keylength) 3160 {} 3161#endif 3162 3163/*! 3164 * \brief Set the callback for generating temporary DH keys. 3165 * \param ctx the SSL context. 3166 * \param dh the callback 3167 */ 3168 3169#ifndef OPENSSL_NO_DH 3170void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3171 int keylength)) 3172 { 3173 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3174 } 3175 3176void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3177 int keylength)) 3178 { 3179 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3180 } 3181#endif 3182 3183#ifndef OPENSSL_NO_ECDH 3184void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3185 int keylength)) 3186 { 3187 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3188 } 3189 3190void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3191 int keylength)) 3192 { 3193 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3194 } 3195#endif 3196 3197#ifndef OPENSSL_NO_PSK 3198int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3199 { 3200 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3201 { 3202 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3203 return 0; 3204 } 3205 if (ctx->psk_identity_hint != NULL) 3206 OPENSSL_free(ctx->psk_identity_hint); 3207 if (identity_hint != NULL) 3208 { 3209 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3210 if (ctx->psk_identity_hint == NULL) 3211 return 0; 3212 } 3213 else 3214 ctx->psk_identity_hint = NULL; 3215 return 1; 3216 } 3217 3218int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3219 { 3220 if (s == NULL) 3221 return 0; 3222 3223 if (s->session == NULL) 3224 return 1; /* session not created yet, ignored */ 3225 3226 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3227 { 3228 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3229 return 0; 3230 } 3231 if (s->session->psk_identity_hint != NULL) 3232 OPENSSL_free(s->session->psk_identity_hint); 3233 if (identity_hint != NULL) 3234 { 3235 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3236 if (s->session->psk_identity_hint == NULL) 3237 return 0; 3238 } 3239 else 3240 s->session->psk_identity_hint = NULL; 3241 return 1; 3242 } 3243 3244const char *SSL_get_psk_identity_hint(const SSL *s) 3245 { 3246 if (s == NULL || s->session == NULL) 3247 return NULL; 3248 return(s->session->psk_identity_hint); 3249 } 3250 3251const char *SSL_get_psk_identity(const SSL *s) 3252 { 3253 if (s == NULL || s->session == NULL) 3254 return NULL; 3255 return(s->session->psk_identity); 3256 } 3257 3258void SSL_set_psk_client_callback(SSL *s, 3259 unsigned int (*cb)(SSL *ssl, const char *hint, 3260 char *identity, unsigned int max_identity_len, unsigned char *psk, 3261 unsigned int max_psk_len)) 3262 { 3263 s->psk_client_callback = cb; 3264 } 3265 3266void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3267 unsigned int (*cb)(SSL *ssl, const char *hint, 3268 char *identity, unsigned int max_identity_len, unsigned char *psk, 3269 unsigned int max_psk_len)) 3270 { 3271 ctx->psk_client_callback = cb; 3272 } 3273 3274void SSL_set_psk_server_callback(SSL *s, 3275 unsigned int (*cb)(SSL *ssl, const char *identity, 3276 unsigned char *psk, unsigned int max_psk_len)) 3277 { 3278 s->psk_server_callback = cb; 3279 } 3280 3281void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3282 unsigned int (*cb)(SSL *ssl, const char *identity, 3283 unsigned char *psk, unsigned int max_psk_len)) 3284 { 3285 ctx->psk_server_callback = cb; 3286 } 3287#endif 3288 3289void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3290 { 3291 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3292 } 3293void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3294 { 3295 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3296 } 3297 3298/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3299 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3300 * any. If EVP_MD pointer is passed, initializes ctx with this md 3301 * Returns newly allocated ctx; 3302 */ 3303 3304EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3305{ 3306 ssl_clear_hash_ctx(hash); 3307 *hash = EVP_MD_CTX_create(); 3308 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3309 return *hash; 3310} 3311void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3312{ 3313 3314 if (*hash) EVP_MD_CTX_destroy(*hash); 3315 *hash=NULL; 3316} 3317 3318void SSL_set_debug(SSL *s, int debug) 3319 { 3320 s->debug = debug; 3321 } 3322 3323int SSL_cache_hit(SSL *s) 3324 { 3325 return s->hit; 3326 } 3327 3328#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3329#include "../crypto/bio/bss_file.c" 3330#endif 3331 3332IMPLEMENT_STACK_OF(SSL_CIPHER) 3333IMPLEMENT_STACK_OF(SSL_COMP) 3334IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3335 ssl_cipher_id); 3336