ssl_lib.c revision 1.25
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 *end; 1342 STACK_OF(SSL_CIPHER) *sk; 1343 SSL_CIPHER *c; 1344 size_t curlen = 0; 1345 int i; 1346 1347 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1348 (len < 2)) 1349 return(NULL); 1350 1351 sk=s->session->ciphers; 1352 buf[0] = '\0'; 1353 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1354 { 1355 c=sk_SSL_CIPHER_value(sk,i); 1356 end = buf + curlen; 1357 if (strlcat(buf, c->name, len) >= len || 1358 (curlen = strlcat(buf, ":", len)) >= len) 1359 { 1360 /* remove truncated cipher from list */ 1361 *end = '\0'; 1362 break; 1363 } 1364 } 1365 /* remove trailing colon */ 1366 if ((end = strrchr(buf, ':')) != NULL) 1367 *end = '\0'; 1368 return(buf); 1369 } 1370 1371int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1372 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1373 { 1374 int i,j=0; 1375 SSL_CIPHER *c; 1376 unsigned char *q; 1377#ifndef OPENSSL_NO_KRB5 1378 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1379#endif /* OPENSSL_NO_KRB5 */ 1380 1381 if (sk == NULL) return(0); 1382 q=p; 1383 1384 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1385 { 1386 c=sk_SSL_CIPHER_value(sk,i); 1387 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1388 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1389 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1390 continue; 1391#ifndef OPENSSL_NO_KRB5 1392 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1393 nokrb5) 1394 continue; 1395#endif /* OPENSSL_NO_KRB5 */ 1396#ifndef OPENSSL_NO_PSK 1397 /* with PSK there must be client callback set */ 1398 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1399 s->psk_client_callback == NULL) 1400 continue; 1401#endif /* OPENSSL_NO_PSK */ 1402 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1403 p+=j; 1404 } 1405 /* If p == q, no ciphers and caller indicates an error. Otherwise 1406 * add SCSV if not renegotiating. 1407 */ 1408 if (p != q && !s->renegotiate) 1409 { 1410 static SSL_CIPHER scsv = 1411 { 1412 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1413 }; 1414 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p); 1415 p+=j; 1416#ifdef OPENSSL_RI_DEBUG 1417 fprintf(stderr, "SCSV sent by client\n"); 1418#endif 1419 } 1420 1421 return(p-q); 1422 } 1423 1424STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1425 STACK_OF(SSL_CIPHER) **skp) 1426 { 1427 const SSL_CIPHER *c; 1428 STACK_OF(SSL_CIPHER) *sk; 1429 int i,n; 1430 if (s->s3) 1431 s->s3->send_connection_binding = 0; 1432 1433 n=ssl_put_cipher_by_char(s,NULL,NULL); 1434 if ((num%n) != 0) 1435 { 1436 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1437 return(NULL); 1438 } 1439 if ((skp == NULL) || (*skp == NULL)) 1440 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1441 else 1442 { 1443 sk= *skp; 1444 sk_SSL_CIPHER_zero(sk); 1445 } 1446 1447 for (i=0; i<num; i+=n) 1448 { 1449 /* Check for SCSV */ 1450 if (s->s3 && (n != 3 || !p[0]) && 1451 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1452 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1453 { 1454 /* SCSV fatal if renegotiating */ 1455 if (s->renegotiate) 1456 { 1457 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1458 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1459 goto err; 1460 } 1461 s->s3->send_connection_binding = 1; 1462 p += n; 1463#ifdef OPENSSL_RI_DEBUG 1464 fprintf(stderr, "SCSV received by server\n"); 1465#endif 1466 continue; 1467 } 1468 1469 c=ssl_get_cipher_by_char(s,p); 1470 p+=n; 1471 if (c != NULL) 1472 { 1473 if (!sk_SSL_CIPHER_push(sk,c)) 1474 { 1475 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1476 goto err; 1477 } 1478 } 1479 } 1480 1481 if (skp != NULL) 1482 *skp=sk; 1483 return(sk); 1484err: 1485 if ((skp == NULL) || (*skp == NULL)) 1486 sk_SSL_CIPHER_free(sk); 1487 return(NULL); 1488 } 1489 1490 1491#ifndef OPENSSL_NO_TLSEXT 1492/** return a servername extension value if provided in Client Hello, or NULL. 1493 * So far, only host_name types are defined (RFC 3546). 1494 */ 1495 1496const char *SSL_get_servername(const SSL *s, const int type) 1497 { 1498 if (type != TLSEXT_NAMETYPE_host_name) 1499 return NULL; 1500 1501 return s->session && !s->tlsext_hostname ? 1502 s->session->tlsext_hostname : 1503 s->tlsext_hostname; 1504 } 1505 1506int SSL_get_servername_type(const SSL *s) 1507 { 1508 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1509 return TLSEXT_NAMETYPE_host_name; 1510 return -1; 1511 } 1512 1513# ifndef OPENSSL_NO_NEXTPROTONEG 1514/* SSL_select_next_proto implements the standard protocol selection. It is 1515 * expected that this function is called from the callback set by 1516 * SSL_CTX_set_next_proto_select_cb. 1517 * 1518 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1519 * strings. The length byte itself is not included in the length. A byte 1520 * string of length 0 is invalid. No byte string may be truncated. 1521 * 1522 * The current, but experimental algorithm for selecting the protocol is: 1523 * 1524 * 1) If the server doesn't support NPN then this is indicated to the 1525 * callback. In this case, the client application has to abort the connection 1526 * or have a default application level protocol. 1527 * 1528 * 2) If the server supports NPN, but advertises an empty list then the 1529 * client selects the first protcol in its list, but indicates via the 1530 * API that this fallback case was enacted. 1531 * 1532 * 3) Otherwise, the client finds the first protocol in the server's list 1533 * that it supports and selects this protocol. This is because it's 1534 * assumed that the server has better information about which protocol 1535 * a client should use. 1536 * 1537 * 4) If the client doesn't support any of the server's advertised 1538 * protocols, then this is treated the same as case 2. 1539 * 1540 * It returns either 1541 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1542 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1543 */ 1544int 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) 1545 { 1546 unsigned int i, j; 1547 const unsigned char *result; 1548 int status = OPENSSL_NPN_UNSUPPORTED; 1549 1550 /* For each protocol in server preference order, see if we support it. */ 1551 for (i = 0; i < server_len; ) 1552 { 1553 for (j = 0; j < client_len; ) 1554 { 1555 if (server[i] == client[j] && 1556 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1557 { 1558 /* We found a match */ 1559 result = &server[i]; 1560 status = OPENSSL_NPN_NEGOTIATED; 1561 goto found; 1562 } 1563 j += client[j]; 1564 j++; 1565 } 1566 i += server[i]; 1567 i++; 1568 } 1569 1570 /* There's no overlap between our protocols and the server's list. */ 1571 result = client; 1572 status = OPENSSL_NPN_NO_OVERLAP; 1573 1574 found: 1575 *out = (unsigned char *) result + 1; 1576 *outlen = result[0]; 1577 return status; 1578 } 1579 1580/* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1581 * requested protocol for this connection and returns 0. If the client didn't 1582 * request any protocol, then *data is set to NULL. 1583 * 1584 * Note that the client can request any protocol it chooses. The value returned 1585 * from this function need not be a member of the list of supported protocols 1586 * provided by the callback. 1587 */ 1588void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1589 { 1590 *data = s->next_proto_negotiated; 1591 if (!*data) { 1592 *len = 0; 1593 } else { 1594 *len = s->next_proto_negotiated_len; 1595 } 1596} 1597 1598/* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1599 * TLS server needs a list of supported protocols for Next Protocol 1600 * Negotiation. The returned list must be in wire format. The list is returned 1601 * by setting |out| to point to it and |outlen| to its length. This memory will 1602 * not be modified, but one should assume that the SSL* keeps a reference to 1603 * it. 1604 * 1605 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1606 * such extension will be included in the ServerHello. */ 1607void 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) 1608 { 1609 ctx->next_protos_advertised_cb = cb; 1610 ctx->next_protos_advertised_cb_arg = arg; 1611 } 1612 1613/* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1614 * client needs to select a protocol from the server's provided list. |out| 1615 * must be set to point to the selected protocol (which may be within |in|). 1616 * The length of the protocol name must be written into |outlen|. The server's 1617 * advertised protocols are provided in |in| and |inlen|. The callback can 1618 * assume that |in| is syntactically valid. 1619 * 1620 * The client must select a protocol. It is fatal to the connection if this 1621 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1622 */ 1623void 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) 1624 { 1625 ctx->next_proto_select_cb = cb; 1626 ctx->next_proto_select_cb_arg = arg; 1627 } 1628# endif 1629#endif 1630 1631int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1632 const char *label, size_t llen, const unsigned char *p, size_t plen, 1633 int use_context) 1634 { 1635 if (s->version < TLS1_VERSION) 1636 return -1; 1637 1638 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1639 llen, p, plen, 1640 use_context); 1641 } 1642 1643static unsigned long ssl_session_hash(const SSL_SESSION *a) 1644 { 1645 unsigned long l; 1646 1647 l=(unsigned long) 1648 ((unsigned int) a->session_id[0] )| 1649 ((unsigned int) a->session_id[1]<< 8L)| 1650 ((unsigned long)a->session_id[2]<<16L)| 1651 ((unsigned long)a->session_id[3]<<24L); 1652 return(l); 1653 } 1654 1655/* NB: If this function (or indeed the hash function which uses a sort of 1656 * coarser function than this one) is changed, ensure 1657 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1658 * able to construct an SSL_SESSION that will collide with any existing session 1659 * with a matching session ID. */ 1660static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1661 { 1662 if (a->ssl_version != b->ssl_version) 1663 return(1); 1664 if (a->session_id_length != b->session_id_length) 1665 return(1); 1666 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1667 } 1668 1669/* These wrapper functions should remain rather than redeclaring 1670 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1671 * variable. The reason is that the functions aren't static, they're exposed via 1672 * ssl.h. */ 1673static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1674static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1675 1676SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1677 { 1678 SSL_CTX *ret=NULL; 1679 1680 if (meth == NULL) 1681 { 1682 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1683 return(NULL); 1684 } 1685 1686#ifdef OPENSSL_FIPS 1687 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1688 { 1689 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1690 return NULL; 1691 } 1692#endif 1693 1694 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1695 { 1696 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1697 goto err; 1698 } 1699 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1700 if (ret == NULL) 1701 goto err; 1702 1703 memset(ret,0,sizeof(SSL_CTX)); 1704 1705 ret->method=meth; 1706 1707 ret->cert_store=NULL; 1708 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1709 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1710 ret->session_cache_head=NULL; 1711 ret->session_cache_tail=NULL; 1712 1713 /* We take the system default */ 1714 ret->session_timeout=meth->get_timeout(); 1715 1716 ret->new_session_cb=0; 1717 ret->remove_session_cb=0; 1718 ret->get_session_cb=0; 1719 ret->generate_session_id=0; 1720 1721 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1722 1723 ret->references=1; 1724 ret->quiet_shutdown=0; 1725 1726/* ret->cipher=NULL;*/ 1727/* ret->s2->challenge=NULL; 1728 ret->master_key=NULL; 1729 ret->key_arg=NULL; 1730 ret->s2->conn_id=NULL; */ 1731 1732 ret->info_callback=NULL; 1733 1734 ret->app_verify_callback=0; 1735 ret->app_verify_arg=NULL; 1736 1737 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1738 ret->read_ahead=0; 1739 ret->msg_callback=0; 1740 ret->msg_callback_arg=NULL; 1741 ret->verify_mode=SSL_VERIFY_NONE; 1742#if 0 1743 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1744#endif 1745 ret->sid_ctx_length=0; 1746 ret->default_verify_callback=NULL; 1747 if ((ret->cert=ssl_cert_new()) == NULL) 1748 goto err; 1749 1750 ret->default_passwd_callback=0; 1751 ret->default_passwd_callback_userdata=NULL; 1752 ret->client_cert_cb=0; 1753 ret->app_gen_cookie_cb=0; 1754 ret->app_verify_cookie_cb=0; 1755 1756 ret->sessions=lh_SSL_SESSION_new(); 1757 if (ret->sessions == NULL) goto err; 1758 ret->cert_store=X509_STORE_new(); 1759 if (ret->cert_store == NULL) goto err; 1760 1761 ssl_create_cipher_list(ret->method, 1762 &ret->cipher_list,&ret->cipher_list_by_id, 1763 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1764 if (ret->cipher_list == NULL 1765 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1766 { 1767 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1768 goto err2; 1769 } 1770 1771 ret->param = X509_VERIFY_PARAM_new(); 1772 if (!ret->param) 1773 goto err; 1774 1775 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1776 { 1777 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1778 goto err2; 1779 } 1780 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1781 { 1782 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1783 goto err2; 1784 } 1785 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1786 { 1787 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1788 goto err2; 1789 } 1790 1791 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1792 goto err; 1793 1794 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1795 1796 ret->extra_certs=NULL; 1797 /* No compression for DTLS */ 1798 if (meth->version != DTLS1_VERSION) 1799 ret->comp_methods=SSL_COMP_get_compression_methods(); 1800 1801 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1802 1803#ifndef OPENSSL_NO_TLSEXT 1804 ret->tlsext_servername_callback = 0; 1805 ret->tlsext_servername_arg = NULL; 1806 /* Setup RFC4507 ticket keys */ 1807 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1808 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1809 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1810 ret->options |= SSL_OP_NO_TICKET; 1811 1812 ret->tlsext_status_cb = 0; 1813 ret->tlsext_status_arg = NULL; 1814 1815# ifndef OPENSSL_NO_NEXTPROTONEG 1816 ret->next_protos_advertised_cb = 0; 1817 ret->next_proto_select_cb = 0; 1818# endif 1819#endif 1820#ifndef OPENSSL_NO_PSK 1821 ret->psk_identity_hint=NULL; 1822 ret->psk_client_callback=NULL; 1823 ret->psk_server_callback=NULL; 1824#endif 1825#ifndef OPENSSL_NO_SRP 1826 SSL_CTX_SRP_CTX_init(ret); 1827#endif 1828#ifndef OPENSSL_NO_BUF_FREELISTS 1829 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1830 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1831 if (!ret->rbuf_freelist) 1832 goto err; 1833 ret->rbuf_freelist->chunklen = 0; 1834 ret->rbuf_freelist->len = 0; 1835 ret->rbuf_freelist->head = NULL; 1836 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1837 if (!ret->wbuf_freelist) 1838 { 1839 OPENSSL_free(ret->rbuf_freelist); 1840 goto err; 1841 } 1842 ret->wbuf_freelist->chunklen = 0; 1843 ret->wbuf_freelist->len = 0; 1844 ret->wbuf_freelist->head = NULL; 1845#endif 1846#ifndef OPENSSL_NO_ENGINE 1847 ret->client_cert_engine = NULL; 1848#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1849#define eng_strx(x) #x 1850#define eng_str(x) eng_strx(x) 1851 /* Use specific client engine automatically... ignore errors */ 1852 { 1853 ENGINE *eng; 1854 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1855 if (!eng) 1856 { 1857 ERR_clear_error(); 1858 ENGINE_load_builtin_engines(); 1859 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1860 } 1861 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1862 ERR_clear_error(); 1863 } 1864#endif 1865#endif 1866 /* Default is to connect to non-RI servers. When RI is more widely 1867 * deployed might change this. 1868 */ 1869 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1870 1871 return(ret); 1872err: 1873 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1874err2: 1875 if (ret != NULL) SSL_CTX_free(ret); 1876 return(NULL); 1877 } 1878 1879#if 0 1880static void SSL_COMP_free(SSL_COMP *comp) 1881 { OPENSSL_free(comp); } 1882#endif 1883 1884#ifndef OPENSSL_NO_BUF_FREELISTS 1885static void 1886ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1887 { 1888 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1889 for (ent = list->head; ent; ent = next) 1890 { 1891 next = ent->next; 1892 OPENSSL_free(ent); 1893 } 1894 OPENSSL_free(list); 1895 } 1896#endif 1897 1898void SSL_CTX_free(SSL_CTX *a) 1899 { 1900 int i; 1901 1902 if (a == NULL) return; 1903 1904 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1905#ifdef REF_PRINT 1906 REF_PRINT("SSL_CTX",a); 1907#endif 1908 if (i > 0) return; 1909#ifdef REF_CHECK 1910 if (i < 0) 1911 { 1912 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1913 abort(); /* ok */ 1914 } 1915#endif 1916 1917 if (a->param) 1918 X509_VERIFY_PARAM_free(a->param); 1919 1920 /* 1921 * Free internal session cache. However: the remove_cb() may reference 1922 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1923 * after the sessions were flushed. 1924 * As the ex_data handling routines might also touch the session cache, 1925 * the most secure solution seems to be: empty (flush) the cache, then 1926 * free ex_data, then finally free the cache. 1927 * (See ticket [openssl.org #212].) 1928 */ 1929 if (a->sessions != NULL) 1930 SSL_CTX_flush_sessions(a,0); 1931 1932 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1933 1934 if (a->sessions != NULL) 1935 lh_SSL_SESSION_free(a->sessions); 1936 1937 if (a->cert_store != NULL) 1938 X509_STORE_free(a->cert_store); 1939 if (a->cipher_list != NULL) 1940 sk_SSL_CIPHER_free(a->cipher_list); 1941 if (a->cipher_list_by_id != NULL) 1942 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1943 if (a->cert != NULL) 1944 ssl_cert_free(a->cert); 1945 if (a->client_CA != NULL) 1946 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1947 if (a->extra_certs != NULL) 1948 sk_X509_pop_free(a->extra_certs,X509_free); 1949#if 0 /* This should never be done, since it removes a global database */ 1950 if (a->comp_methods != NULL) 1951 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1952#else 1953 a->comp_methods = NULL; 1954#endif 1955 1956#ifndef OPENSSL_NO_SRTP 1957 if (a->srtp_profiles) 1958 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1959#endif 1960 1961#ifndef OPENSSL_NO_PSK 1962 if (a->psk_identity_hint) 1963 OPENSSL_free(a->psk_identity_hint); 1964#endif 1965#ifndef OPENSSL_NO_SRP 1966 SSL_CTX_SRP_CTX_free(a); 1967#endif 1968#ifndef OPENSSL_NO_ENGINE 1969 if (a->client_cert_engine) 1970 ENGINE_finish(a->client_cert_engine); 1971#endif 1972 1973#ifndef OPENSSL_NO_BUF_FREELISTS 1974 if (a->wbuf_freelist) 1975 ssl_buf_freelist_free(a->wbuf_freelist); 1976 if (a->rbuf_freelist) 1977 ssl_buf_freelist_free(a->rbuf_freelist); 1978#endif 1979 1980 OPENSSL_free(a); 1981 } 1982 1983void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1984 { 1985 ctx->default_passwd_callback=cb; 1986 } 1987 1988void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1989 { 1990 ctx->default_passwd_callback_userdata=u; 1991 } 1992 1993void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1994 { 1995 ctx->app_verify_callback=cb; 1996 ctx->app_verify_arg=arg; 1997 } 1998 1999void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2000 { 2001 ctx->verify_mode=mode; 2002 ctx->default_verify_callback=cb; 2003 } 2004 2005void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2006 { 2007 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2008 } 2009 2010void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2011 { 2012 CERT_PKEY *cpk; 2013 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2014 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2015 int rsa_tmp_export,dh_tmp_export,kl; 2016 unsigned long mask_k,mask_a,emask_k,emask_a; 2017 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2018#ifndef OPENSSL_NO_ECDH 2019 int have_ecdh_tmp; 2020#endif 2021 X509 *x = NULL; 2022 EVP_PKEY *ecc_pkey = NULL; 2023 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2024 2025 if (c == NULL) return; 2026 2027 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2028 2029#ifndef OPENSSL_NO_RSA 2030 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2031 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2032 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2033#else 2034 rsa_tmp=rsa_tmp_export=0; 2035#endif 2036#ifndef OPENSSL_NO_DH 2037 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2038 dh_tmp_export=(c->dh_tmp_cb != NULL || 2039 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2040#else 2041 dh_tmp=dh_tmp_export=0; 2042#endif 2043 2044#ifndef OPENSSL_NO_ECDH 2045 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2046#endif 2047 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2048 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2049 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2050 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2051 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2052 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2053 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2054 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2055 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2056 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2057 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2058/* FIX THIS EAY EAY EAY */ 2059 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2061 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2062 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2063 mask_k=0; 2064 mask_a=0; 2065 emask_k=0; 2066 emask_a=0; 2067 2068 2069 2070#ifdef CIPHER_DEBUG 2071 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2072 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2073 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2074#endif 2075 2076 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2077 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2078 mask_k |= SSL_kGOST; 2079 mask_a |= SSL_aGOST01; 2080 } 2081 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2082 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2083 mask_k |= SSL_kGOST; 2084 mask_a |= SSL_aGOST94; 2085 } 2086 2087 if (rsa_enc || (rsa_tmp && rsa_sign)) 2088 mask_k|=SSL_kRSA; 2089 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2090 emask_k|=SSL_kRSA; 2091 2092#if 0 2093 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2094 if ( (dh_tmp || dh_rsa || dh_dsa) && 2095 (rsa_enc || rsa_sign || dsa_sign)) 2096 mask_k|=SSL_kEDH; 2097 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2098 (rsa_enc || rsa_sign || dsa_sign)) 2099 emask_k|=SSL_kEDH; 2100#endif 2101 2102 if (dh_tmp_export) 2103 emask_k|=SSL_kEDH; 2104 2105 if (dh_tmp) 2106 mask_k|=SSL_kEDH; 2107 2108 if (dh_rsa) mask_k|=SSL_kDHr; 2109 if (dh_rsa_export) emask_k|=SSL_kDHr; 2110 2111 if (dh_dsa) mask_k|=SSL_kDHd; 2112 if (dh_dsa_export) emask_k|=SSL_kDHd; 2113 2114 if (rsa_enc || rsa_sign) 2115 { 2116 mask_a|=SSL_aRSA; 2117 emask_a|=SSL_aRSA; 2118 } 2119 2120 if (dsa_sign) 2121 { 2122 mask_a|=SSL_aDSS; 2123 emask_a|=SSL_aDSS; 2124 } 2125 2126 mask_a|=SSL_aNULL; 2127 emask_a|=SSL_aNULL; 2128 2129#ifndef OPENSSL_NO_KRB5 2130 mask_k|=SSL_kKRB5; 2131 mask_a|=SSL_aKRB5; 2132 emask_k|=SSL_kKRB5; 2133 emask_a|=SSL_aKRB5; 2134#endif 2135 2136 /* An ECC certificate may be usable for ECDH and/or 2137 * ECDSA cipher suites depending on the key usage extension. 2138 */ 2139 if (have_ecc_cert) 2140 { 2141 /* This call populates extension flags (ex_flags) */ 2142 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2143 X509_check_purpose(x, -1, 0); 2144 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2145 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2146 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2147 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2148 ecc_pkey = X509_get_pubkey(x); 2149 ecc_pkey_size = (ecc_pkey != NULL) ? 2150 EVP_PKEY_bits(ecc_pkey) : 0; 2151 EVP_PKEY_free(ecc_pkey); 2152 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2153 { 2154 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2155 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2156 } 2157#ifndef OPENSSL_NO_ECDH 2158 if (ecdh_ok) 2159 { 2160 2161 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2162 { 2163 mask_k|=SSL_kECDHr; 2164 mask_a|=SSL_aECDH; 2165 if (ecc_pkey_size <= 163) 2166 { 2167 emask_k|=SSL_kECDHr; 2168 emask_a|=SSL_aECDH; 2169 } 2170 } 2171 2172 if (pk_nid == NID_X9_62_id_ecPublicKey) 2173 { 2174 mask_k|=SSL_kECDHe; 2175 mask_a|=SSL_aECDH; 2176 if (ecc_pkey_size <= 163) 2177 { 2178 emask_k|=SSL_kECDHe; 2179 emask_a|=SSL_aECDH; 2180 } 2181 } 2182 } 2183#endif 2184#ifndef OPENSSL_NO_ECDSA 2185 if (ecdsa_ok) 2186 { 2187 mask_a|=SSL_aECDSA; 2188 emask_a|=SSL_aECDSA; 2189 } 2190#endif 2191 } 2192 2193#ifndef OPENSSL_NO_ECDH 2194 if (have_ecdh_tmp) 2195 { 2196 mask_k|=SSL_kEECDH; 2197 emask_k|=SSL_kEECDH; 2198 } 2199#endif 2200 2201#ifndef OPENSSL_NO_PSK 2202 mask_k |= SSL_kPSK; 2203 mask_a |= SSL_aPSK; 2204 emask_k |= SSL_kPSK; 2205 emask_a |= SSL_aPSK; 2206#endif 2207 2208 c->mask_k=mask_k; 2209 c->mask_a=mask_a; 2210 c->export_mask_k=emask_k; 2211 c->export_mask_a=emask_a; 2212 c->valid=1; 2213 } 2214 2215/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2216#define ku_reject(x, usage) \ 2217 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2218 2219#ifndef OPENSSL_NO_EC 2220 2221int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2222 { 2223 unsigned long alg_k, alg_a; 2224 EVP_PKEY *pkey = NULL; 2225 int keysize = 0; 2226 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2227 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2228 2229 alg_k = cs->algorithm_mkey; 2230 alg_a = cs->algorithm_auth; 2231 2232 if (SSL_C_IS_EXPORT(cs)) 2233 { 2234 /* ECDH key length in export ciphers must be <= 163 bits */ 2235 pkey = X509_get_pubkey(x); 2236 if (pkey == NULL) return 0; 2237 keysize = EVP_PKEY_bits(pkey); 2238 EVP_PKEY_free(pkey); 2239 if (keysize > 163) return 0; 2240 } 2241 2242 /* This call populates the ex_flags field correctly */ 2243 X509_check_purpose(x, -1, 0); 2244 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2245 { 2246 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2247 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2248 } 2249 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2250 { 2251 /* key usage, if present, must allow key agreement */ 2252 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2253 { 2254 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2255 return 0; 2256 } 2257 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2258 { 2259 /* signature alg must be ECDSA */ 2260 if (pk_nid != NID_X9_62_id_ecPublicKey) 2261 { 2262 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2263 return 0; 2264 } 2265 } 2266 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2267 { 2268 /* signature alg must be RSA */ 2269 2270 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2271 { 2272 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2273 return 0; 2274 } 2275 } 2276 } 2277 if (alg_a & SSL_aECDSA) 2278 { 2279 /* key usage, if present, must allow signing */ 2280 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2281 { 2282 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2283 return 0; 2284 } 2285 } 2286 2287 return 1; /* all checks are ok */ 2288 } 2289 2290#endif 2291 2292/* THIS NEEDS CLEANING UP */ 2293CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2294 { 2295 unsigned long alg_k,alg_a; 2296 CERT *c; 2297 int i; 2298 2299 c=s->cert; 2300 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2301 2302 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2303 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2304 2305 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2306 { 2307 /* we don't need to look at SSL_kEECDH 2308 * since no certificate is needed for 2309 * anon ECDH and for authenticated 2310 * EECDH, the check for the auth 2311 * algorithm will set i correctly 2312 * NOTE: For ECDH-RSA, we need an ECC 2313 * not an RSA cert but for EECDH-RSA 2314 * we need an RSA cert. Placing the 2315 * checks for SSL_kECDH before RSA 2316 * checks ensures the correct cert is chosen. 2317 */ 2318 i=SSL_PKEY_ECC; 2319 } 2320 else if (alg_a & SSL_aECDSA) 2321 { 2322 i=SSL_PKEY_ECC; 2323 } 2324 else if (alg_k & SSL_kDHr) 2325 i=SSL_PKEY_DH_RSA; 2326 else if (alg_k & SSL_kDHd) 2327 i=SSL_PKEY_DH_DSA; 2328 else if (alg_a & SSL_aDSS) 2329 i=SSL_PKEY_DSA_SIGN; 2330 else if (alg_a & SSL_aRSA) 2331 { 2332 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2333 i=SSL_PKEY_RSA_SIGN; 2334 else 2335 i=SSL_PKEY_RSA_ENC; 2336 } 2337 else if (alg_a & SSL_aKRB5) 2338 { 2339 /* VRS something else here? */ 2340 return(NULL); 2341 } 2342 else if (alg_a & SSL_aGOST94) 2343 i=SSL_PKEY_GOST94; 2344 else if (alg_a & SSL_aGOST01) 2345 i=SSL_PKEY_GOST01; 2346 else /* if (alg_a & SSL_aNULL) */ 2347 { 2348 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2349 return(NULL); 2350 } 2351 2352 return c->pkeys + i; 2353 } 2354 2355X509 *ssl_get_server_send_cert(const SSL *s) 2356 { 2357 CERT_PKEY *cpk; 2358 cpk = ssl_get_server_send_pkey(s); 2359 if (!cpk) 2360 return NULL; 2361 return cpk->x509; 2362 } 2363 2364EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2365 { 2366 unsigned long alg_a; 2367 CERT *c; 2368 int idx = -1; 2369 2370 alg_a = cipher->algorithm_auth; 2371 c=s->cert; 2372 2373 if ((alg_a & SSL_aDSS) && 2374 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2375 idx = SSL_PKEY_DSA_SIGN; 2376 else if (alg_a & SSL_aRSA) 2377 { 2378 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2379 idx = SSL_PKEY_RSA_SIGN; 2380 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2381 idx = SSL_PKEY_RSA_ENC; 2382 } 2383 else if ((alg_a & SSL_aECDSA) && 2384 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2385 idx = SSL_PKEY_ECC; 2386 if (idx == -1) 2387 { 2388 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2389 return(NULL); 2390 } 2391 if (pmd) 2392 *pmd = c->pkeys[idx].digest; 2393 return c->pkeys[idx].privatekey; 2394 } 2395 2396void ssl_update_cache(SSL *s,int mode) 2397 { 2398 int i; 2399 2400 /* If the session_id_length is 0, we are not supposed to cache it, 2401 * and it would be rather hard to do anyway :-) */ 2402 if (s->session->session_id_length == 0) return; 2403 2404 i=s->session_ctx->session_cache_mode; 2405 if ((i & mode) && (!s->hit) 2406 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2407 || SSL_CTX_add_session(s->session_ctx,s->session)) 2408 && (s->session_ctx->new_session_cb != NULL)) 2409 { 2410 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2411 if (!s->session_ctx->new_session_cb(s,s->session)) 2412 SSL_SESSION_free(s->session); 2413 } 2414 2415 /* auto flush every 255 connections */ 2416 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2417 ((i & mode) == mode)) 2418 { 2419 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2420 ?s->session_ctx->stats.sess_connect_good 2421 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2422 { 2423 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2424 } 2425 } 2426 } 2427 2428const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2429 { 2430 return(s->method); 2431 } 2432 2433int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2434 { 2435 int conn= -1; 2436 int ret=1; 2437 2438 if (s->method != meth) 2439 { 2440 if (s->handshake_func != NULL) 2441 conn=(s->handshake_func == s->method->ssl_connect); 2442 2443 if (s->method->version == meth->version) 2444 s->method=meth; 2445 else 2446 { 2447 s->method->ssl_free(s); 2448 s->method=meth; 2449 ret=s->method->ssl_new(s); 2450 } 2451 2452 if (conn == 1) 2453 s->handshake_func=meth->ssl_connect; 2454 else if (conn == 0) 2455 s->handshake_func=meth->ssl_accept; 2456 } 2457 return(ret); 2458 } 2459 2460int SSL_get_error(const SSL *s,int i) 2461 { 2462 int reason; 2463 unsigned long l; 2464 BIO *bio; 2465 2466 if (i > 0) return(SSL_ERROR_NONE); 2467 2468 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2469 * etc, where we do encode the error */ 2470 if ((l=ERR_peek_error()) != 0) 2471 { 2472 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2473 return(SSL_ERROR_SYSCALL); 2474 else 2475 return(SSL_ERROR_SSL); 2476 } 2477 2478 if ((i < 0) && SSL_want_read(s)) 2479 { 2480 bio=SSL_get_rbio(s); 2481 if (BIO_should_read(bio)) 2482 return(SSL_ERROR_WANT_READ); 2483 else if (BIO_should_write(bio)) 2484 /* This one doesn't make too much sense ... We never try 2485 * to write to the rbio, and an application program where 2486 * rbio and wbio are separate couldn't even know what it 2487 * should wait for. 2488 * However if we ever set s->rwstate incorrectly 2489 * (so that we have SSL_want_read(s) instead of 2490 * SSL_want_write(s)) and rbio and wbio *are* the same, 2491 * this test works around that bug; so it might be safer 2492 * to keep it. */ 2493 return(SSL_ERROR_WANT_WRITE); 2494 else if (BIO_should_io_special(bio)) 2495 { 2496 reason=BIO_get_retry_reason(bio); 2497 if (reason == BIO_RR_CONNECT) 2498 return(SSL_ERROR_WANT_CONNECT); 2499 else if (reason == BIO_RR_ACCEPT) 2500 return(SSL_ERROR_WANT_ACCEPT); 2501 else 2502 return(SSL_ERROR_SYSCALL); /* unknown */ 2503 } 2504 } 2505 2506 if ((i < 0) && SSL_want_write(s)) 2507 { 2508 bio=SSL_get_wbio(s); 2509 if (BIO_should_write(bio)) 2510 return(SSL_ERROR_WANT_WRITE); 2511 else if (BIO_should_read(bio)) 2512 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2513 return(SSL_ERROR_WANT_READ); 2514 else if (BIO_should_io_special(bio)) 2515 { 2516 reason=BIO_get_retry_reason(bio); 2517 if (reason == BIO_RR_CONNECT) 2518 return(SSL_ERROR_WANT_CONNECT); 2519 else if (reason == BIO_RR_ACCEPT) 2520 return(SSL_ERROR_WANT_ACCEPT); 2521 else 2522 return(SSL_ERROR_SYSCALL); 2523 } 2524 } 2525 if ((i < 0) && SSL_want_x509_lookup(s)) 2526 { 2527 return(SSL_ERROR_WANT_X509_LOOKUP); 2528 } 2529 2530 if (i == 0) 2531 { 2532 if (s->version == SSL2_VERSION) 2533 { 2534 /* assume it is the socket being closed */ 2535 return(SSL_ERROR_ZERO_RETURN); 2536 } 2537 else 2538 { 2539 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2540 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2541 return(SSL_ERROR_ZERO_RETURN); 2542 } 2543 } 2544 return(SSL_ERROR_SYSCALL); 2545 } 2546 2547int SSL_do_handshake(SSL *s) 2548 { 2549 int ret=1; 2550 2551 if (s->handshake_func == NULL) 2552 { 2553 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2554 return(-1); 2555 } 2556 2557 s->method->ssl_renegotiate_check(s); 2558 2559 if (SSL_in_init(s) || SSL_in_before(s)) 2560 { 2561 ret=s->handshake_func(s); 2562 } 2563 return(ret); 2564 } 2565 2566/* For the next 2 functions, SSL_clear() sets shutdown and so 2567 * one of these calls will reset it */ 2568void SSL_set_accept_state(SSL *s) 2569 { 2570 s->server=1; 2571 s->shutdown=0; 2572 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2573 s->handshake_func=s->method->ssl_accept; 2574 /* clear the current cipher */ 2575 ssl_clear_cipher_ctx(s); 2576 ssl_clear_hash_ctx(&s->read_hash); 2577 ssl_clear_hash_ctx(&s->write_hash); 2578 } 2579 2580void SSL_set_connect_state(SSL *s) 2581 { 2582 s->server=0; 2583 s->shutdown=0; 2584 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2585 s->handshake_func=s->method->ssl_connect; 2586 /* clear the current cipher */ 2587 ssl_clear_cipher_ctx(s); 2588 ssl_clear_hash_ctx(&s->read_hash); 2589 ssl_clear_hash_ctx(&s->write_hash); 2590 } 2591 2592int ssl_undefined_function(SSL *s) 2593 { 2594 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2595 return(0); 2596 } 2597 2598int ssl_undefined_void_function(void) 2599 { 2600 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2601 return(0); 2602 } 2603 2604int ssl_undefined_const_function(const SSL *s) 2605 { 2606 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2607 return(0); 2608 } 2609 2610SSL_METHOD *ssl_bad_method(int ver) 2611 { 2612 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2613 return(NULL); 2614 } 2615 2616const char *SSL_get_version(const SSL *s) 2617 { 2618 if (s->version == TLS1_2_VERSION) 2619 return("TLSv1.2"); 2620 else if (s->version == TLS1_1_VERSION) 2621 return("TLSv1.1"); 2622 else if (s->version == TLS1_VERSION) 2623 return("TLSv1"); 2624 else if (s->version == SSL3_VERSION) 2625 return("SSLv3"); 2626 else if (s->version == SSL2_VERSION) 2627 return("SSLv2"); 2628 else 2629 return("unknown"); 2630 } 2631 2632SSL *SSL_dup(SSL *s) 2633 { 2634 STACK_OF(X509_NAME) *sk; 2635 X509_NAME *xn; 2636 SSL *ret; 2637 int i; 2638 2639 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2640 return(NULL); 2641 2642 ret->version = s->version; 2643 ret->type = s->type; 2644 ret->method = s->method; 2645 2646 if (s->session != NULL) 2647 { 2648 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2649 SSL_copy_session_id(ret,s); 2650 } 2651 else 2652 { 2653 /* No session has been established yet, so we have to expect 2654 * that s->cert or ret->cert will be changed later -- 2655 * they should not both point to the same object, 2656 * and thus we can't use SSL_copy_session_id. */ 2657 2658 ret->method->ssl_free(ret); 2659 ret->method = s->method; 2660 ret->method->ssl_new(ret); 2661 2662 if (s->cert != NULL) 2663 { 2664 if (ret->cert != NULL) 2665 { 2666 ssl_cert_free(ret->cert); 2667 } 2668 ret->cert = ssl_cert_dup(s->cert); 2669 if (ret->cert == NULL) 2670 goto err; 2671 } 2672 2673 SSL_set_session_id_context(ret, 2674 s->sid_ctx, s->sid_ctx_length); 2675 } 2676 2677 ret->options=s->options; 2678 ret->mode=s->mode; 2679 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2680 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2681 ret->msg_callback = s->msg_callback; 2682 ret->msg_callback_arg = s->msg_callback_arg; 2683 SSL_set_verify(ret,SSL_get_verify_mode(s), 2684 SSL_get_verify_callback(s)); 2685 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2686 ret->generate_session_id = s->generate_session_id; 2687 2688 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2689 2690 ret->debug=s->debug; 2691 2692 /* copy app data, a little dangerous perhaps */ 2693 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2694 goto err; 2695 2696 /* setup rbio, and wbio */ 2697 if (s->rbio != NULL) 2698 { 2699 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2700 goto err; 2701 } 2702 if (s->wbio != NULL) 2703 { 2704 if (s->wbio != s->rbio) 2705 { 2706 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2707 goto err; 2708 } 2709 else 2710 ret->wbio=ret->rbio; 2711 } 2712 ret->rwstate = s->rwstate; 2713 ret->in_handshake = s->in_handshake; 2714 ret->handshake_func = s->handshake_func; 2715 ret->server = s->server; 2716 ret->renegotiate = s->renegotiate; 2717 ret->new_session = s->new_session; 2718 ret->quiet_shutdown = s->quiet_shutdown; 2719 ret->shutdown=s->shutdown; 2720 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2721 ret->rstate=s->rstate; 2722 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2723 ret->hit=s->hit; 2724 2725 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2726 2727 /* dup the cipher_list and cipher_list_by_id stacks */ 2728 if (s->cipher_list != NULL) 2729 { 2730 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2731 goto err; 2732 } 2733 if (s->cipher_list_by_id != NULL) 2734 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2735 == NULL) 2736 goto err; 2737 2738 /* Dup the client_CA list */ 2739 if (s->client_CA != NULL) 2740 { 2741 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2742 ret->client_CA=sk; 2743 for (i=0; i<sk_X509_NAME_num(sk); i++) 2744 { 2745 xn=sk_X509_NAME_value(sk,i); 2746 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2747 { 2748 X509_NAME_free(xn); 2749 goto err; 2750 } 2751 } 2752 } 2753 2754 if (0) 2755 { 2756err: 2757 if (ret != NULL) SSL_free(ret); 2758 ret=NULL; 2759 } 2760 return(ret); 2761 } 2762 2763void ssl_clear_cipher_ctx(SSL *s) 2764 { 2765 if (s->enc_read_ctx != NULL) 2766 { 2767 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2768 OPENSSL_free(s->enc_read_ctx); 2769 s->enc_read_ctx=NULL; 2770 } 2771 if (s->enc_write_ctx != NULL) 2772 { 2773 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2774 OPENSSL_free(s->enc_write_ctx); 2775 s->enc_write_ctx=NULL; 2776 } 2777#ifndef OPENSSL_NO_COMP 2778 if (s->expand != NULL) 2779 { 2780 COMP_CTX_free(s->expand); 2781 s->expand=NULL; 2782 } 2783 if (s->compress != NULL) 2784 { 2785 COMP_CTX_free(s->compress); 2786 s->compress=NULL; 2787 } 2788#endif 2789 } 2790 2791/* Fix this function so that it takes an optional type parameter */ 2792X509 *SSL_get_certificate(const SSL *s) 2793 { 2794 if (s->cert != NULL) 2795 return(s->cert->key->x509); 2796 else 2797 return(NULL); 2798 } 2799 2800/* Fix this function so that it takes an optional type parameter */ 2801EVP_PKEY *SSL_get_privatekey(SSL *s) 2802 { 2803 if (s->cert != NULL) 2804 return(s->cert->key->privatekey); 2805 else 2806 return(NULL); 2807 } 2808 2809const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2810 { 2811 if ((s->session != NULL) && (s->session->cipher != NULL)) 2812 return(s->session->cipher); 2813 return(NULL); 2814 } 2815#ifdef OPENSSL_NO_COMP 2816const void *SSL_get_current_compression(SSL *s) 2817 { 2818 return NULL; 2819 } 2820const void *SSL_get_current_expansion(SSL *s) 2821 { 2822 return NULL; 2823 } 2824#else 2825 2826const COMP_METHOD *SSL_get_current_compression(SSL *s) 2827 { 2828 if (s->compress != NULL) 2829 return(s->compress->meth); 2830 return(NULL); 2831 } 2832 2833const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2834 { 2835 if (s->expand != NULL) 2836 return(s->expand->meth); 2837 return(NULL); 2838 } 2839#endif 2840 2841int ssl_init_wbio_buffer(SSL *s,int push) 2842 { 2843 BIO *bbio; 2844 2845 if (s->bbio == NULL) 2846 { 2847 bbio=BIO_new(BIO_f_buffer()); 2848 if (bbio == NULL) return(0); 2849 s->bbio=bbio; 2850 } 2851 else 2852 { 2853 bbio=s->bbio; 2854 if (s->bbio == s->wbio) 2855 s->wbio=BIO_pop(s->wbio); 2856 } 2857 (void)BIO_reset(bbio); 2858/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2859 if (!BIO_set_read_buffer_size(bbio,1)) 2860 { 2861 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2862 return(0); 2863 } 2864 if (push) 2865 { 2866 if (s->wbio != bbio) 2867 s->wbio=BIO_push(bbio,s->wbio); 2868 } 2869 else 2870 { 2871 if (s->wbio == bbio) 2872 s->wbio=BIO_pop(bbio); 2873 } 2874 return(1); 2875 } 2876 2877void ssl_free_wbio_buffer(SSL *s) 2878 { 2879 if (s->bbio == NULL) return; 2880 2881 if (s->bbio == s->wbio) 2882 { 2883 /* remove buffering */ 2884 s->wbio=BIO_pop(s->wbio); 2885#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2886 assert(s->wbio != NULL); 2887#endif 2888 } 2889 BIO_free(s->bbio); 2890 s->bbio=NULL; 2891 } 2892 2893void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2894 { 2895 ctx->quiet_shutdown=mode; 2896 } 2897 2898int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2899 { 2900 return(ctx->quiet_shutdown); 2901 } 2902 2903void SSL_set_quiet_shutdown(SSL *s,int mode) 2904 { 2905 s->quiet_shutdown=mode; 2906 } 2907 2908int SSL_get_quiet_shutdown(const SSL *s) 2909 { 2910 return(s->quiet_shutdown); 2911 } 2912 2913void SSL_set_shutdown(SSL *s,int mode) 2914 { 2915 s->shutdown=mode; 2916 } 2917 2918int SSL_get_shutdown(const SSL *s) 2919 { 2920 return(s->shutdown); 2921 } 2922 2923int SSL_version(const SSL *s) 2924 { 2925 return(s->version); 2926 } 2927 2928SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2929 { 2930 return(ssl->ctx); 2931 } 2932 2933SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2934 { 2935 if (ssl->ctx == ctx) 2936 return ssl->ctx; 2937#ifndef OPENSSL_NO_TLSEXT 2938 if (ctx == NULL) 2939 ctx = ssl->initial_ctx; 2940#endif 2941 if (ssl->cert != NULL) 2942 ssl_cert_free(ssl->cert); 2943 ssl->cert = ssl_cert_dup(ctx->cert); 2944 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 2945 if (ssl->ctx != NULL) 2946 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2947 ssl->ctx = ctx; 2948 return(ssl->ctx); 2949 } 2950 2951#ifndef OPENSSL_NO_STDIO 2952int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2953 { 2954 return(X509_STORE_set_default_paths(ctx->cert_store)); 2955 } 2956 2957int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2958 const char *CApath) 2959 { 2960 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2961 } 2962#endif 2963 2964void SSL_set_info_callback(SSL *ssl, 2965 void (*cb)(const SSL *ssl,int type,int val)) 2966 { 2967 ssl->info_callback=cb; 2968 } 2969 2970/* One compiler (Diab DCC) doesn't like argument names in returned 2971 function pointer. */ 2972void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2973 { 2974 return ssl->info_callback; 2975 } 2976 2977int SSL_state(const SSL *ssl) 2978 { 2979 return(ssl->state); 2980 } 2981 2982void SSL_set_state(SSL *ssl, int state) 2983 { 2984 ssl->state = state; 2985 } 2986 2987void SSL_set_verify_result(SSL *ssl,long arg) 2988 { 2989 ssl->verify_result=arg; 2990 } 2991 2992long SSL_get_verify_result(const SSL *ssl) 2993 { 2994 return(ssl->verify_result); 2995 } 2996 2997int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2998 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2999 { 3000 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3001 new_func, dup_func, free_func); 3002 } 3003 3004int SSL_set_ex_data(SSL *s,int idx,void *arg) 3005 { 3006 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3007 } 3008 3009void *SSL_get_ex_data(const SSL *s,int idx) 3010 { 3011 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3012 } 3013 3014int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3015 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3016 { 3017 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3018 new_func, dup_func, free_func); 3019 } 3020 3021int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3022 { 3023 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3024 } 3025 3026void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3027 { 3028 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3029 } 3030 3031int ssl_ok(SSL *s) 3032 { 3033 return(1); 3034 } 3035 3036X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3037 { 3038 return(ctx->cert_store); 3039 } 3040 3041void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3042 { 3043 if (ctx->cert_store != NULL) 3044 X509_STORE_free(ctx->cert_store); 3045 ctx->cert_store=store; 3046 } 3047 3048int SSL_want(const SSL *s) 3049 { 3050 return(s->rwstate); 3051 } 3052 3053/*! 3054 * \brief Set the callback for generating temporary RSA keys. 3055 * \param ctx the SSL context. 3056 * \param cb the callback 3057 */ 3058 3059#ifndef OPENSSL_NO_RSA 3060void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3061 int is_export, 3062 int keylength)) 3063 { 3064 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3065 } 3066 3067void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3068 int is_export, 3069 int keylength)) 3070 { 3071 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3072 } 3073#endif 3074 3075#ifdef DOXYGEN 3076/*! 3077 * \brief The RSA temporary key callback function. 3078 * \param ssl the SSL session. 3079 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3080 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3081 * of the required key in bits. 3082 * \return the temporary RSA key. 3083 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3084 */ 3085 3086RSA *cb(SSL *ssl,int is_export,int keylength) 3087 {} 3088#endif 3089 3090/*! 3091 * \brief Set the callback for generating temporary DH keys. 3092 * \param ctx the SSL context. 3093 * \param dh the callback 3094 */ 3095 3096#ifndef OPENSSL_NO_DH 3097void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3098 int keylength)) 3099 { 3100 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3101 } 3102 3103void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3104 int keylength)) 3105 { 3106 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3107 } 3108#endif 3109 3110#ifndef OPENSSL_NO_ECDH 3111void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3112 int keylength)) 3113 { 3114 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3115 } 3116 3117void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3118 int keylength)) 3119 { 3120 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3121 } 3122#endif 3123 3124#ifndef OPENSSL_NO_PSK 3125int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3126 { 3127 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3128 { 3129 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3130 return 0; 3131 } 3132 if (ctx->psk_identity_hint != NULL) 3133 OPENSSL_free(ctx->psk_identity_hint); 3134 if (identity_hint != NULL) 3135 { 3136 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3137 if (ctx->psk_identity_hint == NULL) 3138 return 0; 3139 } 3140 else 3141 ctx->psk_identity_hint = NULL; 3142 return 1; 3143 } 3144 3145int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3146 { 3147 if (s == NULL) 3148 return 0; 3149 3150 if (s->session == NULL) 3151 return 1; /* session not created yet, ignored */ 3152 3153 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3154 { 3155 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3156 return 0; 3157 } 3158 if (s->session->psk_identity_hint != NULL) 3159 OPENSSL_free(s->session->psk_identity_hint); 3160 if (identity_hint != NULL) 3161 { 3162 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3163 if (s->session->psk_identity_hint == NULL) 3164 return 0; 3165 } 3166 else 3167 s->session->psk_identity_hint = NULL; 3168 return 1; 3169 } 3170 3171const char *SSL_get_psk_identity_hint(const SSL *s) 3172 { 3173 if (s == NULL || s->session == NULL) 3174 return NULL; 3175 return(s->session->psk_identity_hint); 3176 } 3177 3178const char *SSL_get_psk_identity(const SSL *s) 3179 { 3180 if (s == NULL || s->session == NULL) 3181 return NULL; 3182 return(s->session->psk_identity); 3183 } 3184 3185void SSL_set_psk_client_callback(SSL *s, 3186 unsigned int (*cb)(SSL *ssl, const char *hint, 3187 char *identity, unsigned int max_identity_len, unsigned char *psk, 3188 unsigned int max_psk_len)) 3189 { 3190 s->psk_client_callback = cb; 3191 } 3192 3193void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3194 unsigned int (*cb)(SSL *ssl, const char *hint, 3195 char *identity, unsigned int max_identity_len, unsigned char *psk, 3196 unsigned int max_psk_len)) 3197 { 3198 ctx->psk_client_callback = cb; 3199 } 3200 3201void SSL_set_psk_server_callback(SSL *s, 3202 unsigned int (*cb)(SSL *ssl, const char *identity, 3203 unsigned char *psk, unsigned int max_psk_len)) 3204 { 3205 s->psk_server_callback = cb; 3206 } 3207 3208void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3209 unsigned int (*cb)(SSL *ssl, const char *identity, 3210 unsigned char *psk, unsigned int max_psk_len)) 3211 { 3212 ctx->psk_server_callback = cb; 3213 } 3214#endif 3215 3216void 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)) 3217 { 3218 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3219 } 3220void 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)) 3221 { 3222 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3223 } 3224 3225/* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3226 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3227 * any. If EVP_MD pointer is passed, initializes ctx with this md 3228 * Returns newly allocated ctx; 3229 */ 3230 3231EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3232{ 3233 ssl_clear_hash_ctx(hash); 3234 *hash = EVP_MD_CTX_create(); 3235 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3236 return *hash; 3237} 3238void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3239{ 3240 3241 if (*hash) EVP_MD_CTX_destroy(*hash); 3242 *hash=NULL; 3243} 3244 3245void SSL_set_debug(SSL *s, int debug) 3246 { 3247 s->debug = debug; 3248 } 3249 3250int SSL_cache_hit(SSL *s) 3251 { 3252 return s->hit; 3253 } 3254 3255#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3256#include "../crypto/bio/bss_file.c" 3257#endif 3258 3259IMPLEMENT_STACK_OF(SSL_CIPHER) 3260IMPLEMENT_STACK_OF(SSL_COMP) 3261IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3262 ssl_cipher_id); 3263