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 162 163 const char *SSL_version_str=OPENSSL_VERSION_TEXT; 164 165 SSL3_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 }; 184 185 int 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 */ 258 int 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 } 274 275 SSL *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); 384 err: 385 if (s != NULL) 386 SSL_free(s); 387 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 388 return(NULL); 389 } 390 391 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 392 unsigned int sid_ctx_len) 393 { 394 if(sid_ctx_len > sizeof ctx->sid_ctx) 395 { 396 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 397 return 0; 398 } 399 ctx->sid_ctx_length=sid_ctx_len; 400 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 401 402 return 1; 403 } 404 405 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 406 unsigned int sid_ctx_len) 407 { 408 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 409 { 410 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 411 return 0; 412 } 413 ssl->sid_ctx_length=sid_ctx_len; 414 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 415 416 return 1; 417 } 418 419 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 420 { 421 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 422 ctx->generate_session_id = cb; 423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 424 return 1; 425 } 426 427 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 428 { 429 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 430 ssl->generate_session_id = cb; 431 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 432 return 1; 433 } 434 435 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 436 unsigned int id_len) 437 { 438 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 439 * we can "construct" a session to give us the desired check - ie. to 440 * find if there's a session in the hash table that would conflict with 441 * any new session built out of this id/id_len and the ssl_version in 442 * use by this SSL. */ 443 SSL_SESSION r, *p; 444 445 if(id_len > sizeof r.session_id) 446 return 0; 447 448 r.ssl_version = ssl->version; 449 r.session_id_length = id_len; 450 memcpy(r.session_id, id, id_len); 451 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 452 * callback is calling us to check the uniqueness of a shorter ID, it 453 * must be compared as a padded-out ID because that is what it will be 454 * converted to when the callback has finished choosing it. */ 455 if((r.ssl_version == SSL2_VERSION) && 456 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 457 { 458 memset(r.session_id + id_len, 0, 459 SSL2_SSL_SESSION_ID_LENGTH - id_len); 460 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 461 } 462 463 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 464 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r); 465 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 466 return (p != NULL); 467 } 468 469 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 470 { 471 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 472 } 473 474 int SSL_set_purpose(SSL *s, int purpose) 475 { 476 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 477 } 478 479 int SSL_CTX_set_trust(SSL_CTX *s, int trust) 480 { 481 return X509_VERIFY_PARAM_set_trust(s->param, trust); 482 } 483 484 int SSL_set_trust(SSL *s, int trust) 485 { 486 return X509_VERIFY_PARAM_set_trust(s->param, trust); 487 } 488 489 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 490 { 491 return X509_VERIFY_PARAM_set1(ctx->param, vpm); 492 } 493 494 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 495 { 496 return X509_VERIFY_PARAM_set1(ssl->param, vpm); 497 } 498 499 void SSL_free(SSL *s) 500 { 501 int i; 502 503 if(s == NULL) 504 return; 505 506 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 507 #ifdef REF_PRINT 508 REF_PRINT("SSL",s); 509 #endif 510 if (i > 0) return; 511 #ifdef REF_CHECK 512 if (i < 0) 513 { 514 fprintf(stderr,"SSL_free, bad reference count\n"); 515 abort(); /* ok */ 516 } 517 #endif 518 519 if (s->param) 520 X509_VERIFY_PARAM_free(s->param); 521 522 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 523 524 if (s->bbio != NULL) 525 { 526 /* If the buffering BIO is in place, pop it off */ 527 if (s->bbio == s->wbio) 528 { 529 s->wbio=BIO_pop(s->wbio); 530 } 531 BIO_free(s->bbio); 532 s->bbio=NULL; 533 } 534 if (s->rbio != NULL) 535 BIO_free_all(s->rbio); 536 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 537 BIO_free_all(s->wbio); 538 539 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 540 541 /* add extra stuff */ 542 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 543 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 544 545 /* Make the next call work :-) */ 546 if (s->session != NULL) 547 { 548 ssl_clear_bad_session(s); 549 SSL_SESSION_free(s->session); 550 } 551 552 ssl_clear_cipher_ctx(s); 553 ssl_clear_hash_ctx(&s->read_hash); 554 ssl_clear_hash_ctx(&s->write_hash); 555 556 if (s->cert != NULL) ssl_cert_free(s->cert); 557 /* Free up if allocated */ 558 559 #ifndef OPENSSL_NO_TLSEXT 560 if (s->tlsext_hostname) 561 OPENSSL_free(s->tlsext_hostname); 562 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx); 563 #ifndef OPENSSL_NO_EC 564 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist); 565 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist); 566 #endif /* OPENSSL_NO_EC */ 567 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input); 568 if (s->tlsext_ocsp_exts) 569 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 570 X509_EXTENSION_free); 571 if (s->tlsext_ocsp_ids) 572 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 573 if (s->tlsext_ocsp_resp) 574 OPENSSL_free(s->tlsext_ocsp_resp); 575 #endif 576 577 if (s->client_CA != NULL) 578 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 579 580 if (s->method != NULL) s->method->ssl_free(s); 581 582 if (s->ctx) SSL_CTX_free(s->ctx); 583 584 #ifndef OPENSSL_NO_KRB5 585 if (s->kssl_ctx != NULL) 586 kssl_ctx_free(s->kssl_ctx); 587 #endif /* OPENSSL_NO_KRB5 */ 588 589 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 590 if (s->next_proto_negotiated) 591 OPENSSL_free(s->next_proto_negotiated); 592 #endif 593 594 #ifndef OPENSSL_NO_SRTP 595 if (s->srtp_profiles) 596 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles); 597 #endif 598 599 OPENSSL_free(s); 600 } 601 602 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 603 { 604 /* If the output buffering BIO is still in place, remove it 605 */ 606 if (s->bbio != NULL) 607 { 608 if (s->wbio == s->bbio) 609 { 610 s->wbio=s->wbio->next_bio; 611 s->bbio->next_bio=NULL; 612 } 613 } 614 if ((s->rbio != NULL) && (s->rbio != rbio)) 615 BIO_free_all(s->rbio); 616 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 617 BIO_free_all(s->wbio); 618 s->rbio=rbio; 619 s->wbio=wbio; 620 } 621 622 BIO *SSL_get_rbio(const SSL *s) 623 { return(s->rbio); } 624 625 BIO *SSL_get_wbio(const SSL *s) 626 { return(s->wbio); } 627 628 int SSL_get_fd(const SSL *s) 629 { 630 return(SSL_get_rfd(s)); 631 } 632 633 int SSL_get_rfd(const SSL *s) 634 { 635 int ret= -1; 636 BIO *b,*r; 637 638 b=SSL_get_rbio(s); 639 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 640 if (r != NULL) 641 BIO_get_fd(r,&ret); 642 return(ret); 643 } 644 645 int SSL_get_wfd(const SSL *s) 646 { 647 int ret= -1; 648 BIO *b,*r; 649 650 b=SSL_get_wbio(s); 651 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 652 if (r != NULL) 653 BIO_get_fd(r,&ret); 654 return(ret); 655 } 656 657 #ifndef OPENSSL_NO_SOCK 658 int SSL_set_fd(SSL *s,int fd) 659 { 660 int ret=0; 661 BIO *bio=NULL; 662 663 bio=BIO_new(BIO_s_socket()); 664 665 if (bio == NULL) 666 { 667 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 668 goto err; 669 } 670 BIO_set_fd(bio,fd,BIO_NOCLOSE); 671 SSL_set_bio(s,bio,bio); 672 ret=1; 673 err: 674 return(ret); 675 } 676 677 int SSL_set_wfd(SSL *s,int fd) 678 { 679 int ret=0; 680 BIO *bio=NULL; 681 682 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 683 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 684 { 685 bio=BIO_new(BIO_s_socket()); 686 687 if (bio == NULL) 688 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 689 BIO_set_fd(bio,fd,BIO_NOCLOSE); 690 SSL_set_bio(s,SSL_get_rbio(s),bio); 691 } 692 else 693 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 694 ret=1; 695 err: 696 return(ret); 697 } 698 699 int SSL_set_rfd(SSL *s,int fd) 700 { 701 int ret=0; 702 BIO *bio=NULL; 703 704 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 705 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 706 { 707 bio=BIO_new(BIO_s_socket()); 708 709 if (bio == NULL) 710 { 711 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 712 goto err; 713 } 714 BIO_set_fd(bio,fd,BIO_NOCLOSE); 715 SSL_set_bio(s,bio,SSL_get_wbio(s)); 716 } 717 else 718 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 719 ret=1; 720 err: 721 return(ret); 722 } 723 #endif 724 725 726 /* return length of latest Finished message we sent, copy to 'buf' */ 727 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 728 { 729 size_t ret = 0; 730 731 if (s->s3 != NULL) 732 { 733 ret = s->s3->tmp.finish_md_len; 734 if (count > ret) 735 count = ret; 736 memcpy(buf, s->s3->tmp.finish_md, count); 737 } 738 return ret; 739 } 740 741 /* return length of latest Finished message we expected, copy to 'buf' */ 742 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 743 { 744 size_t ret = 0; 745 746 if (s->s3 != NULL) 747 { 748 ret = s->s3->tmp.peer_finish_md_len; 749 if (count > ret) 750 count = ret; 751 memcpy(buf, s->s3->tmp.peer_finish_md, count); 752 } 753 return ret; 754 } 755 756 757 int SSL_get_verify_mode(const SSL *s) 758 { 759 return(s->verify_mode); 760 } 761 762 int SSL_get_verify_depth(const SSL *s) 763 { 764 return X509_VERIFY_PARAM_get_depth(s->param); 765 } 766 767 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 768 { 769 return(s->verify_callback); 770 } 771 772 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 773 { 774 return(ctx->verify_mode); 775 } 776 777 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 778 { 779 return X509_VERIFY_PARAM_get_depth(ctx->param); 780 } 781 782 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 783 { 784 return(ctx->default_verify_callback); 785 } 786 787 void SSL_set_verify(SSL *s,int mode, 788 int (*callback)(int ok,X509_STORE_CTX *ctx)) 789 { 790 s->verify_mode=mode; 791 if (callback != NULL) 792 s->verify_callback=callback; 793 } 794 795 void SSL_set_verify_depth(SSL *s,int depth) 796 { 797 X509_VERIFY_PARAM_set_depth(s->param, depth); 798 } 799 800 void SSL_set_read_ahead(SSL *s,int yes) 801 { 802 s->read_ahead=yes; 803 } 804 805 int SSL_get_read_ahead(const SSL *s) 806 { 807 return(s->read_ahead); 808 } 809 810 int SSL_pending(const SSL *s) 811 { 812 /* SSL_pending cannot work properly if read-ahead is enabled 813 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 814 * and it is impossible to fix since SSL_pending cannot report 815 * errors that may be observed while scanning the new data. 816 * (Note that SSL_pending() is often used as a boolean value, 817 * so we'd better not return -1.) 818 */ 819 return(s->method->ssl_pending(s)); 820 } 821 822 X509 *SSL_get_peer_certificate(const SSL *s) 823 { 824 X509 *r; 825 826 if ((s == NULL) || (s->session == NULL)) 827 r=NULL; 828 else 829 r=s->session->peer; 830 831 if (r == NULL) return(r); 832 833 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 834 835 return(r); 836 } 837 838 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 839 { 840 STACK_OF(X509) *r; 841 842 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 843 r=NULL; 844 else 845 r=s->session->sess_cert->cert_chain; 846 847 /* If we are a client, cert_chain includes the peer's own 848 * certificate; if we are a server, it does not. */ 849 850 return(r); 851 } 852 853 /* Now in theory, since the calling process own 't' it should be safe to 854 * modify. We need to be able to read f without being hassled */ 855 void SSL_copy_session_id(SSL *t,const SSL *f) 856 { 857 CERT *tmp; 858 859 /* Do we need to to SSL locking? */ 860 SSL_set_session(t,SSL_get_session(f)); 861 862 /* what if we are setup as SSLv2 but want to talk SSLv3 or 863 * vice-versa */ 864 if (t->method != f->method) 865 { 866 t->method->ssl_free(t); /* cleanup current */ 867 t->method=f->method; /* change method */ 868 t->method->ssl_new(t); /* setup new */ 869 } 870 871 tmp=t->cert; 872 if (f->cert != NULL) 873 { 874 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 875 t->cert=f->cert; 876 } 877 else 878 t->cert=NULL; 879 if (tmp != NULL) ssl_cert_free(tmp); 880 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 881 } 882 883 /* Fix this so it checks all the valid key/cert options */ 884 int SSL_CTX_check_private_key(const SSL_CTX *ctx) 885 { 886 if ( (ctx == NULL) || 887 (ctx->cert == NULL) || 888 (ctx->cert->key->x509 == NULL)) 889 { 890 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 891 return(0); 892 } 893 if (ctx->cert->key->privatekey == NULL) 894 { 895 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 896 return(0); 897 } 898 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 899 } 900 901 /* Fix this function so that it takes an optional type parameter */ 902 int SSL_check_private_key(const SSL *ssl) 903 { 904 if (ssl == NULL) 905 { 906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 907 return(0); 908 } 909 if (ssl->cert == NULL) 910 { 911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 912 return 0; 913 } 914 if (ssl->cert->key->x509 == NULL) 915 { 916 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 917 return(0); 918 } 919 if (ssl->cert->key->privatekey == NULL) 920 { 921 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 922 return(0); 923 } 924 return(X509_check_private_key(ssl->cert->key->x509, 925 ssl->cert->key->privatekey)); 926 } 927 928 int SSL_accept(SSL *s) 929 { 930 if (s->handshake_func == 0) 931 /* Not properly initialized yet */ 932 SSL_set_accept_state(s); 933 934 return(s->method->ssl_accept(s)); 935 } 936 937 int SSL_connect(SSL *s) 938 { 939 if (s->handshake_func == 0) 940 /* Not properly initialized yet */ 941 SSL_set_connect_state(s); 942 943 return(s->method->ssl_connect(s)); 944 } 945 946 long SSL_get_default_timeout(const SSL *s) 947 { 948 return(s->method->get_timeout()); 949 } 950 951 int SSL_read(SSL *s,void *buf,int num) 952 { 953 if (s->handshake_func == 0) 954 { 955 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 956 return -1; 957 } 958 959 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 960 { 961 s->rwstate=SSL_NOTHING; 962 return(0); 963 } 964 return(s->method->ssl_read(s,buf,num)); 965 } 966 967 int SSL_peek(SSL *s,void *buf,int num) 968 { 969 if (s->handshake_func == 0) 970 { 971 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 972 return -1; 973 } 974 975 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 976 { 977 return(0); 978 } 979 return(s->method->ssl_peek(s,buf,num)); 980 } 981 982 int SSL_write(SSL *s,const void *buf,int num) 983 { 984 if (s->handshake_func == 0) 985 { 986 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 987 return -1; 988 } 989 990 if (s->shutdown & SSL_SENT_SHUTDOWN) 991 { 992 s->rwstate=SSL_NOTHING; 993 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 994 return(-1); 995 } 996 return(s->method->ssl_write(s,buf,num)); 997 } 998 999 int SSL_shutdown(SSL *s) 1000 { 1001 /* Note that this function behaves differently from what one might 1002 * expect. Return values are 0 for no success (yet), 1003 * 1 for success; but calling it once is usually not enough, 1004 * even if blocking I/O is used (see ssl3_shutdown). 1005 */ 1006 1007 if (s->handshake_func == 0) 1008 { 1009 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1010 return -1; 1011 } 1012 1013 if ((s != NULL) && !SSL_in_init(s)) 1014 return(s->method->ssl_shutdown(s)); 1015 else 1016 return(1); 1017 } 1018 1019 int SSL_renegotiate(SSL *s) 1020 { 1021 if (s->renegotiate == 0) 1022 s->renegotiate=1; 1023 1024 s->new_session=1; 1025 1026 return(s->method->ssl_renegotiate(s)); 1027 } 1028 1029 int SSL_renegotiate_abbreviated(SSL *s) 1030 { 1031 if (s->renegotiate == 0) 1032 s->renegotiate=1; 1033 1034 s->new_session=0; 1035 1036 return(s->method->ssl_renegotiate(s)); 1037 } 1038 1039 int SSL_renegotiate_pending(SSL *s) 1040 { 1041 /* becomes true when negotiation is requested; 1042 * false again once a handshake has finished */ 1043 return (s->renegotiate != 0); 1044 } 1045 1046 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1047 { 1048 long l; 1049 1050 switch (cmd) 1051 { 1052 case SSL_CTRL_GET_READ_AHEAD: 1053 return(s->read_ahead); 1054 case SSL_CTRL_SET_READ_AHEAD: 1055 l=s->read_ahead; 1056 s->read_ahead=larg; 1057 return(l); 1058 1059 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1060 s->msg_callback_arg = parg; 1061 return 1; 1062 1063 case SSL_CTRL_OPTIONS: 1064 return(s->options|=larg); 1065 case SSL_CTRL_CLEAR_OPTIONS: 1066 return(s->options&=~larg); 1067 case SSL_CTRL_MODE: 1068 return(s->mode|=larg); 1069 case SSL_CTRL_CLEAR_MODE: 1070 return(s->mode &=~larg); 1071 case SSL_CTRL_GET_MAX_CERT_LIST: 1072 return(s->max_cert_list); 1073 case SSL_CTRL_SET_MAX_CERT_LIST: 1074 l=s->max_cert_list; 1075 s->max_cert_list=larg; 1076 return(l); 1077 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1078 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1079 return 0; 1080 s->max_send_fragment = larg; 1081 return 1; 1082 case SSL_CTRL_GET_RI_SUPPORT: 1083 if (s->s3) 1084 return s->s3->send_connection_binding; 1085 else return 0; 1086 default: 1087 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1088 } 1089 } 1090 1091 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1092 { 1093 switch(cmd) 1094 { 1095 case SSL_CTRL_SET_MSG_CALLBACK: 1096 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1097 return 1; 1098 1099 default: 1100 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1101 } 1102 } 1103 1104 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1105 { 1106 return ctx->sessions; 1107 } 1108 1109 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1110 { 1111 long l; 1112 1113 switch (cmd) 1114 { 1115 case SSL_CTRL_GET_READ_AHEAD: 1116 return(ctx->read_ahead); 1117 case SSL_CTRL_SET_READ_AHEAD: 1118 l=ctx->read_ahead; 1119 ctx->read_ahead=larg; 1120 return(l); 1121 1122 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1123 ctx->msg_callback_arg = parg; 1124 return 1; 1125 1126 case SSL_CTRL_GET_MAX_CERT_LIST: 1127 return(ctx->max_cert_list); 1128 case SSL_CTRL_SET_MAX_CERT_LIST: 1129 l=ctx->max_cert_list; 1130 ctx->max_cert_list=larg; 1131 return(l); 1132 1133 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1134 l=ctx->session_cache_size; 1135 ctx->session_cache_size=larg; 1136 return(l); 1137 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1138 return(ctx->session_cache_size); 1139 case SSL_CTRL_SET_SESS_CACHE_MODE: 1140 l=ctx->session_cache_mode; 1141 ctx->session_cache_mode=larg; 1142 return(l); 1143 case SSL_CTRL_GET_SESS_CACHE_MODE: 1144 return(ctx->session_cache_mode); 1145 1146 case SSL_CTRL_SESS_NUMBER: 1147 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1148 case SSL_CTRL_SESS_CONNECT: 1149 return(ctx->stats.sess_connect); 1150 case SSL_CTRL_SESS_CONNECT_GOOD: 1151 return(ctx->stats.sess_connect_good); 1152 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1153 return(ctx->stats.sess_connect_renegotiate); 1154 case SSL_CTRL_SESS_ACCEPT: 1155 return(ctx->stats.sess_accept); 1156 case SSL_CTRL_SESS_ACCEPT_GOOD: 1157 return(ctx->stats.sess_accept_good); 1158 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1159 return(ctx->stats.sess_accept_renegotiate); 1160 case SSL_CTRL_SESS_HIT: 1161 return(ctx->stats.sess_hit); 1162 case SSL_CTRL_SESS_CB_HIT: 1163 return(ctx->stats.sess_cb_hit); 1164 case SSL_CTRL_SESS_MISSES: 1165 return(ctx->stats.sess_miss); 1166 case SSL_CTRL_SESS_TIMEOUTS: 1167 return(ctx->stats.sess_timeout); 1168 case SSL_CTRL_SESS_CACHE_FULL: 1169 return(ctx->stats.sess_cache_full); 1170 case SSL_CTRL_OPTIONS: 1171 return(ctx->options|=larg); 1172 case SSL_CTRL_CLEAR_OPTIONS: 1173 return(ctx->options&=~larg); 1174 case SSL_CTRL_MODE: 1175 return(ctx->mode|=larg); 1176 case SSL_CTRL_CLEAR_MODE: 1177 return(ctx->mode&=~larg); 1178 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1179 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1180 return 0; 1181 ctx->max_send_fragment = larg; 1182 return 1; 1183 default: 1184 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1185 } 1186 } 1187 1188 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1189 { 1190 switch(cmd) 1191 { 1192 case SSL_CTRL_SET_MSG_CALLBACK: 1193 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1194 return 1; 1195 1196 default: 1197 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1198 } 1199 } 1200 1201 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1202 { 1203 long l; 1204 1205 l=a->id-b->id; 1206 if (l == 0L) 1207 return(0); 1208 else 1209 return((l > 0)?1:-1); 1210 } 1211 1212 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1213 const SSL_CIPHER * const *bp) 1214 { 1215 long l; 1216 1217 l=(*ap)->id-(*bp)->id; 1218 if (l == 0L) 1219 return(0); 1220 else 1221 return((l > 0)?1:-1); 1222 } 1223 1224 /** return a STACK of the ciphers available for the SSL and in order of 1225 * preference */ 1226 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1227 { 1228 if (s != NULL) 1229 { 1230 if (s->cipher_list != NULL) 1231 { 1232 return(s->cipher_list); 1233 } 1234 else if ((s->ctx != NULL) && 1235 (s->ctx->cipher_list != NULL)) 1236 { 1237 return(s->ctx->cipher_list); 1238 } 1239 } 1240 return(NULL); 1241 } 1242 1243 /** return a STACK of the ciphers available for the SSL and in order of 1244 * algorithm id */ 1245 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1246 { 1247 if (s != NULL) 1248 { 1249 if (s->cipher_list_by_id != NULL) 1250 { 1251 return(s->cipher_list_by_id); 1252 } 1253 else if ((s->ctx != NULL) && 1254 (s->ctx->cipher_list_by_id != NULL)) 1255 { 1256 return(s->ctx->cipher_list_by_id); 1257 } 1258 } 1259 return(NULL); 1260 } 1261 1262 /** The old interface to get the same thing as SSL_get_ciphers() */ 1263 const char *SSL_get_cipher_list(const SSL *s,int n) 1264 { 1265 SSL_CIPHER *c; 1266 STACK_OF(SSL_CIPHER) *sk; 1267 1268 if (s == NULL) return(NULL); 1269 sk=SSL_get_ciphers(s); 1270 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1271 return(NULL); 1272 c=sk_SSL_CIPHER_value(sk,n); 1273 if (c == NULL) return(NULL); 1274 return(c->name); 1275 } 1276 1277 /** specify the ciphers to be used by default by the SSL_CTX */ 1278 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1279 { 1280 STACK_OF(SSL_CIPHER) *sk; 1281 1282 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1283 &ctx->cipher_list_by_id,str); 1284 /* ssl_create_cipher_list may return an empty stack if it 1285 * was unable to find a cipher matching the given rule string 1286 * (for example if the rule string specifies a cipher which 1287 * has been disabled). This is not an error as far as 1288 * ssl_create_cipher_list is concerned, and hence 1289 * ctx->cipher_list and ctx->cipher_list_by_id has been 1290 * updated. */ 1291 if (sk == NULL) 1292 return 0; 1293 else if (sk_SSL_CIPHER_num(sk) == 0) 1294 { 1295 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1296 return 0; 1297 } 1298 return 1; 1299 } 1300 1301 /** specify the ciphers to be used by the SSL */ 1302 int SSL_set_cipher_list(SSL *s,const char *str) 1303 { 1304 STACK_OF(SSL_CIPHER) *sk; 1305 1306 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1307 &s->cipher_list_by_id,str); 1308 /* see comment in SSL_CTX_set_cipher_list */ 1309 if (sk == NULL) 1310 return 0; 1311 else if (sk_SSL_CIPHER_num(sk) == 0) 1312 { 1313 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1314 return 0; 1315 } 1316 return 1; 1317 } 1318 1319 /* works well for SSLv2, not so good for SSLv3 */ 1320 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1321 { 1322 char *p; 1323 STACK_OF(SSL_CIPHER) *sk; 1324 SSL_CIPHER *c; 1325 int i; 1326 1327 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1328 (len < 2)) 1329 return(NULL); 1330 1331 p=buf; 1332 sk=s->session->ciphers; 1333 1334 if (sk_SSL_CIPHER_num(sk) == 0) 1335 return NULL; 1336 1337 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1338 { 1339 int n; 1340 1341 c=sk_SSL_CIPHER_value(sk,i); 1342 n=strlen(c->name); 1343 if (n+1 > len) 1344 { 1345 if (p != buf) 1346 --p; 1347 *p='\0'; 1348 return buf; 1349 } 1350 strcpy(p,c->name); 1351 p+=n; 1352 *(p++)=':'; 1353 len-=n+1; 1354 } 1355 p[-1]='\0'; 1356 return(buf); 1357 } 1358 1359 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1360 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1361 { 1362 int i,j=0; 1363 SSL_CIPHER *c; 1364 unsigned char *q; 1365 #ifndef OPENSSL_NO_KRB5 1366 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1367 #endif /* OPENSSL_NO_KRB5 */ 1368 1369 if (sk == NULL) return(0); 1370 q=p; 1371 if (put_cb == NULL) 1372 put_cb = s->method->put_cipher_by_char; 1373 1374 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1375 { 1376 c=sk_SSL_CIPHER_value(sk,i); 1377 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1378 if ((c->algorithm_ssl & SSL_TLSV1_2) && 1379 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1380 continue; 1381 #ifndef OPENSSL_NO_KRB5 1382 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1383 nokrb5) 1384 continue; 1385 #endif /* OPENSSL_NO_KRB5 */ 1386 #ifndef OPENSSL_NO_PSK 1387 /* with PSK there must be client callback set */ 1388 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1389 s->psk_client_callback == NULL) 1390 continue; 1391 #endif /* OPENSSL_NO_PSK */ 1392 #ifndef OPENSSL_NO_SRP 1393 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) && 1394 !(s->srp_ctx.srp_Mask & SSL_kSRP)) 1395 continue; 1396 #endif /* OPENSSL_NO_SRP */ 1397 j = put_cb(c,p); 1398 p+=j; 1399 } 1400 /* If p == q, no ciphers; caller indicates an error. 1401 * Otherwise, add applicable SCSVs. */ 1402 if (p != q) 1403 { 1404 if (!s->renegotiate) 1405 { 1406 static SSL_CIPHER scsv = 1407 { 1408 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1409 }; 1410 j = put_cb(&scsv,p); 1411 p+=j; 1412 #ifdef OPENSSL_RI_DEBUG 1413 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1414 #endif 1415 } 1416 1417 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) 1418 { 1419 static SSL_CIPHER scsv = 1420 { 1421 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1422 }; 1423 j = put_cb(&scsv,p); 1424 p+=j; 1425 } 1426 } 1427 1428 return(p-q); 1429 } 1430 1431 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1432 STACK_OF(SSL_CIPHER) **skp) 1433 { 1434 const SSL_CIPHER *c; 1435 STACK_OF(SSL_CIPHER) *sk; 1436 int i,n; 1437 1438 if (s->s3) 1439 s->s3->send_connection_binding = 0; 1440 1441 n=ssl_put_cipher_by_char(s,NULL,NULL); 1442 if (n == 0 || (num%n) != 0) 1443 { 1444 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1445 return(NULL); 1446 } 1447 if ((skp == NULL) || (*skp == NULL)) 1448 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1449 else 1450 { 1451 sk= *skp; 1452 sk_SSL_CIPHER_zero(sk); 1453 } 1454 1455 for (i=0; i<num; i+=n) 1456 { 1457 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1458 if (s->s3 && (n != 3 || !p[0]) && 1459 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1460 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1461 { 1462 /* SCSV fatal if renegotiating */ 1463 if (s->renegotiate) 1464 { 1465 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1466 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1467 goto err; 1468 } 1469 s->s3->send_connection_binding = 1; 1470 p += n; 1471 #ifdef OPENSSL_RI_DEBUG 1472 fprintf(stderr, "SCSV received by server\n"); 1473 #endif 1474 continue; 1475 } 1476 1477 /* Check for TLS_FALLBACK_SCSV */ 1478 if ((n != 3 || !p[0]) && 1479 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1480 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) 1481 { 1482 /* The SCSV indicates that the client previously tried a higher version. 1483 * Fail if the current version is an unexpected downgrade. */ 1484 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) 1485 { 1486 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK); 1487 if (s->s3) 1488 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK); 1489 goto err; 1490 } 1491 p += n; 1492 continue; 1493 } 1494 1495 c=ssl_get_cipher_by_char(s,p); 1496 p+=n; 1497 if (c != NULL) 1498 { 1499 if (!sk_SSL_CIPHER_push(sk,c)) 1500 { 1501 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1502 goto err; 1503 } 1504 } 1505 } 1506 1507 if (skp != NULL) 1508 *skp=sk; 1509 return(sk); 1510 err: 1511 if ((skp == NULL) || (*skp == NULL)) 1512 sk_SSL_CIPHER_free(sk); 1513 return(NULL); 1514 } 1515 1516 1517 #ifndef OPENSSL_NO_TLSEXT 1518 /** return a servername extension value if provided in Client Hello, or NULL. 1519 * So far, only host_name types are defined (RFC 3546). 1520 */ 1521 1522 const char *SSL_get_servername(const SSL *s, const int type) 1523 { 1524 if (type != TLSEXT_NAMETYPE_host_name) 1525 return NULL; 1526 1527 return s->session && !s->tlsext_hostname ? 1528 s->session->tlsext_hostname : 1529 s->tlsext_hostname; 1530 } 1531 1532 int SSL_get_servername_type(const SSL *s) 1533 { 1534 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1535 return TLSEXT_NAMETYPE_host_name; 1536 return -1; 1537 } 1538 1539 # ifndef OPENSSL_NO_NEXTPROTONEG 1540 /* SSL_select_next_proto implements the standard protocol selection. It is 1541 * expected that this function is called from the callback set by 1542 * SSL_CTX_set_next_proto_select_cb. 1543 * 1544 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1545 * strings. The length byte itself is not included in the length. A byte 1546 * string of length 0 is invalid. No byte string may be truncated. 1547 * 1548 * The current, but experimental algorithm for selecting the protocol is: 1549 * 1550 * 1) If the server doesn't support NPN then this is indicated to the 1551 * callback. In this case, the client application has to abort the connection 1552 * or have a default application level protocol. 1553 * 1554 * 2) If the server supports NPN, but advertises an empty list then the 1555 * client selects the first protcol in its list, but indicates via the 1556 * API that this fallback case was enacted. 1557 * 1558 * 3) Otherwise, the client finds the first protocol in the server's list 1559 * that it supports and selects this protocol. This is because it's 1560 * assumed that the server has better information about which protocol 1561 * a client should use. 1562 * 1563 * 4) If the client doesn't support any of the server's advertised 1564 * protocols, then this is treated the same as case 2. 1565 * 1566 * It returns either 1567 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1568 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1569 */ 1570 int 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) 1571 { 1572 unsigned int i, j; 1573 const unsigned char *result; 1574 int status = OPENSSL_NPN_UNSUPPORTED; 1575 1576 /* For each protocol in server preference order, see if we support it. */ 1577 for (i = 0; i < server_len; ) 1578 { 1579 for (j = 0; j < client_len; ) 1580 { 1581 if (server[i] == client[j] && 1582 memcmp(&server[i+1], &client[j+1], server[i]) == 0) 1583 { 1584 /* We found a match */ 1585 result = &server[i]; 1586 status = OPENSSL_NPN_NEGOTIATED; 1587 goto found; 1588 } 1589 j += client[j]; 1590 j++; 1591 } 1592 i += server[i]; 1593 i++; 1594 } 1595 1596 /* There's no overlap between our protocols and the server's list. */ 1597 result = client; 1598 status = OPENSSL_NPN_NO_OVERLAP; 1599 1600 found: 1601 *out = (unsigned char *) result + 1; 1602 *outlen = result[0]; 1603 return status; 1604 } 1605 1606 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's 1607 * requested protocol for this connection and returns 0. If the client didn't 1608 * request any protocol, then *data is set to NULL. 1609 * 1610 * Note that the client can request any protocol it chooses. The value returned 1611 * from this function need not be a member of the list of supported protocols 1612 * provided by the callback. 1613 */ 1614 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len) 1615 { 1616 *data = s->next_proto_negotiated; 1617 if (!*data) { 1618 *len = 0; 1619 } else { 1620 *len = s->next_proto_negotiated_len; 1621 } 1622 } 1623 1624 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a 1625 * TLS server needs a list of supported protocols for Next Protocol 1626 * Negotiation. The returned list must be in wire format. The list is returned 1627 * by setting |out| to point to it and |outlen| to its length. This memory will 1628 * not be modified, but one should assume that the SSL* keeps a reference to 1629 * it. 1630 * 1631 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no 1632 * such extension will be included in the ServerHello. */ 1633 void 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) 1634 { 1635 ctx->next_protos_advertised_cb = cb; 1636 ctx->next_protos_advertised_cb_arg = arg; 1637 } 1638 1639 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a 1640 * client needs to select a protocol from the server's provided list. |out| 1641 * must be set to point to the selected protocol (which may be within |in|). 1642 * The length of the protocol name must be written into |outlen|. The server's 1643 * advertised protocols are provided in |in| and |inlen|. The callback can 1644 * assume that |in| is syntactically valid. 1645 * 1646 * The client must select a protocol. It is fatal to the connection if this 1647 * callback returns a value other than SSL_TLSEXT_ERR_OK. 1648 */ 1649 void 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) 1650 { 1651 ctx->next_proto_select_cb = cb; 1652 ctx->next_proto_select_cb_arg = arg; 1653 } 1654 # endif 1655 #endif 1656 1657 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1658 const char *label, size_t llen, const unsigned char *p, size_t plen, 1659 int use_context) 1660 { 1661 if (s->version < TLS1_VERSION) 1662 return -1; 1663 1664 return s->method->ssl3_enc->export_keying_material(s, out, olen, label, 1665 llen, p, plen, 1666 use_context); 1667 } 1668 1669 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1670 { 1671 unsigned long l; 1672 1673 l=(unsigned long) 1674 ((unsigned int) a->session_id[0] )| 1675 ((unsigned int) a->session_id[1]<< 8L)| 1676 ((unsigned long)a->session_id[2]<<16L)| 1677 ((unsigned long)a->session_id[3]<<24L); 1678 return(l); 1679 } 1680 1681 /* NB: If this function (or indeed the hash function which uses a sort of 1682 * coarser function than this one) is changed, ensure 1683 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1684 * able to construct an SSL_SESSION that will collide with any existing session 1685 * with a matching session ID. */ 1686 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1687 { 1688 if (a->ssl_version != b->ssl_version) 1689 return(1); 1690 if (a->session_id_length != b->session_id_length) 1691 return(1); 1692 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1693 } 1694 1695 /* These wrapper functions should remain rather than redeclaring 1696 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1697 * variable. The reason is that the functions aren't static, they're exposed via 1698 * ssl.h. */ 1699 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1700 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1701 1702 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1703 { 1704 SSL_CTX *ret=NULL; 1705 1706 if (meth == NULL) 1707 { 1708 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1709 return(NULL); 1710 } 1711 1712 #ifdef OPENSSL_FIPS 1713 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1714 { 1715 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1716 return NULL; 1717 } 1718 #endif 1719 1720 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1721 { 1722 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1723 goto err; 1724 } 1725 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1726 if (ret == NULL) 1727 goto err; 1728 1729 memset(ret,0,sizeof(SSL_CTX)); 1730 1731 ret->method=meth; 1732 1733 ret->cert_store=NULL; 1734 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1735 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1736 ret->session_cache_head=NULL; 1737 ret->session_cache_tail=NULL; 1738 1739 /* We take the system default */ 1740 ret->session_timeout=meth->get_timeout(); 1741 1742 ret->new_session_cb=0; 1743 ret->remove_session_cb=0; 1744 ret->get_session_cb=0; 1745 ret->generate_session_id=0; 1746 1747 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1748 1749 ret->references=1; 1750 ret->quiet_shutdown=0; 1751 1752 /* ret->cipher=NULL;*/ 1753 /* ret->s2->challenge=NULL; 1754 ret->master_key=NULL; 1755 ret->key_arg=NULL; 1756 ret->s2->conn_id=NULL; */ 1757 1758 ret->info_callback=NULL; 1759 1760 ret->app_verify_callback=0; 1761 ret->app_verify_arg=NULL; 1762 1763 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1764 ret->read_ahead=0; 1765 ret->msg_callback=0; 1766 ret->msg_callback_arg=NULL; 1767 ret->verify_mode=SSL_VERIFY_NONE; 1768 #if 0 1769 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1770 #endif 1771 ret->sid_ctx_length=0; 1772 ret->default_verify_callback=NULL; 1773 if ((ret->cert=ssl_cert_new()) == NULL) 1774 goto err; 1775 1776 ret->default_passwd_callback=0; 1777 ret->default_passwd_callback_userdata=NULL; 1778 ret->client_cert_cb=0; 1779 ret->app_gen_cookie_cb=0; 1780 ret->app_verify_cookie_cb=0; 1781 1782 ret->sessions=lh_SSL_SESSION_new(); 1783 if (ret->sessions == NULL) goto err; 1784 ret->cert_store=X509_STORE_new(); 1785 if (ret->cert_store == NULL) goto err; 1786 1787 ssl_create_cipher_list(ret->method, 1788 &ret->cipher_list,&ret->cipher_list_by_id, 1789 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1790 if (ret->cipher_list == NULL 1791 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1792 { 1793 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1794 goto err2; 1795 } 1796 1797 ret->param = X509_VERIFY_PARAM_new(); 1798 if (!ret->param) 1799 goto err; 1800 1801 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1802 { 1803 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1804 goto err2; 1805 } 1806 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1807 { 1808 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1809 goto err2; 1810 } 1811 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1812 { 1813 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1814 goto err2; 1815 } 1816 1817 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1818 goto err; 1819 1820 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1821 1822 ret->extra_certs=NULL; 1823 /* No compression for DTLS */ 1824 if (meth->version != DTLS1_VERSION) 1825 ret->comp_methods=SSL_COMP_get_compression_methods(); 1826 1827 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1828 1829 #ifndef OPENSSL_NO_TLSEXT 1830 ret->tlsext_servername_callback = 0; 1831 ret->tlsext_servername_arg = NULL; 1832 /* Setup RFC4507 ticket keys */ 1833 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1834 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1835 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1836 ret->options |= SSL_OP_NO_TICKET; 1837 1838 ret->tlsext_status_cb = 0; 1839 ret->tlsext_status_arg = NULL; 1840 1841 # ifndef OPENSSL_NO_NEXTPROTONEG 1842 ret->next_protos_advertised_cb = 0; 1843 ret->next_proto_select_cb = 0; 1844 # endif 1845 #endif 1846 #ifndef OPENSSL_NO_PSK 1847 ret->psk_identity_hint=NULL; 1848 ret->psk_client_callback=NULL; 1849 ret->psk_server_callback=NULL; 1850 #endif 1851 #ifndef OPENSSL_NO_SRP 1852 SSL_CTX_SRP_CTX_init(ret); 1853 #endif 1854 #ifndef OPENSSL_NO_BUF_FREELISTS 1855 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1856 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1857 if (!ret->rbuf_freelist) 1858 goto err; 1859 ret->rbuf_freelist->chunklen = 0; 1860 ret->rbuf_freelist->len = 0; 1861 ret->rbuf_freelist->head = NULL; 1862 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1863 if (!ret->wbuf_freelist) 1864 { 1865 OPENSSL_free(ret->rbuf_freelist); 1866 goto err; 1867 } 1868 ret->wbuf_freelist->chunklen = 0; 1869 ret->wbuf_freelist->len = 0; 1870 ret->wbuf_freelist->head = NULL; 1871 #endif 1872 #ifndef OPENSSL_NO_ENGINE 1873 ret->client_cert_engine = NULL; 1874 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1875 #define eng_strx(x) #x 1876 #define eng_str(x) eng_strx(x) 1877 /* Use specific client engine automatically... ignore errors */ 1878 { 1879 ENGINE *eng; 1880 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1881 if (!eng) 1882 { 1883 ERR_clear_error(); 1884 ENGINE_load_builtin_engines(); 1885 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1886 } 1887 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1888 ERR_clear_error(); 1889 } 1890 #endif 1891 #endif 1892 /* Default is to connect to non-RI servers. When RI is more widely 1893 * deployed might change this. 1894 */ 1895 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1896 1897 return(ret); 1898 err: 1899 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1900 err2: 1901 if (ret != NULL) SSL_CTX_free(ret); 1902 return(NULL); 1903 } 1904 1905 #if 0 1906 static void SSL_COMP_free(SSL_COMP *comp) 1907 { OPENSSL_free(comp); } 1908 #endif 1909 1910 #ifndef OPENSSL_NO_BUF_FREELISTS 1911 static void 1912 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1913 { 1914 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1915 for (ent = list->head; ent; ent = next) 1916 { 1917 next = ent->next; 1918 OPENSSL_free(ent); 1919 } 1920 OPENSSL_free(list); 1921 } 1922 #endif 1923 1924 void SSL_CTX_free(SSL_CTX *a) 1925 { 1926 int i; 1927 1928 if (a == NULL) return; 1929 1930 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1931 #ifdef REF_PRINT 1932 REF_PRINT("SSL_CTX",a); 1933 #endif 1934 if (i > 0) return; 1935 #ifdef REF_CHECK 1936 if (i < 0) 1937 { 1938 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1939 abort(); /* ok */ 1940 } 1941 #endif 1942 1943 if (a->param) 1944 X509_VERIFY_PARAM_free(a->param); 1945 1946 /* 1947 * Free internal session cache. However: the remove_cb() may reference 1948 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1949 * after the sessions were flushed. 1950 * As the ex_data handling routines might also touch the session cache, 1951 * the most secure solution seems to be: empty (flush) the cache, then 1952 * free ex_data, then finally free the cache. 1953 * (See ticket [openssl.org #212].) 1954 */ 1955 if (a->sessions != NULL) 1956 SSL_CTX_flush_sessions(a,0); 1957 1958 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1959 1960 if (a->sessions != NULL) 1961 lh_SSL_SESSION_free(a->sessions); 1962 1963 if (a->cert_store != NULL) 1964 X509_STORE_free(a->cert_store); 1965 if (a->cipher_list != NULL) 1966 sk_SSL_CIPHER_free(a->cipher_list); 1967 if (a->cipher_list_by_id != NULL) 1968 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1969 if (a->cert != NULL) 1970 ssl_cert_free(a->cert); 1971 if (a->client_CA != NULL) 1972 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1973 if (a->extra_certs != NULL) 1974 sk_X509_pop_free(a->extra_certs,X509_free); 1975 #if 0 /* This should never be done, since it removes a global database */ 1976 if (a->comp_methods != NULL) 1977 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1978 #else 1979 a->comp_methods = NULL; 1980 #endif 1981 1982 #ifndef OPENSSL_NO_SRTP 1983 if (a->srtp_profiles) 1984 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles); 1985 #endif 1986 1987 #ifndef OPENSSL_NO_PSK 1988 if (a->psk_identity_hint) 1989 OPENSSL_free(a->psk_identity_hint); 1990 #endif 1991 #ifndef OPENSSL_NO_SRP 1992 SSL_CTX_SRP_CTX_free(a); 1993 #endif 1994 #ifndef OPENSSL_NO_ENGINE 1995 if (a->client_cert_engine) 1996 ENGINE_finish(a->client_cert_engine); 1997 #endif 1998 1999 #ifndef OPENSSL_NO_BUF_FREELISTS 2000 if (a->wbuf_freelist) 2001 ssl_buf_freelist_free(a->wbuf_freelist); 2002 if (a->rbuf_freelist) 2003 ssl_buf_freelist_free(a->rbuf_freelist); 2004 #endif 2005 2006 OPENSSL_free(a); 2007 } 2008 2009 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2010 { 2011 ctx->default_passwd_callback=cb; 2012 } 2013 2014 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 2015 { 2016 ctx->default_passwd_callback_userdata=u; 2017 } 2018 2019 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 2020 { 2021 ctx->app_verify_callback=cb; 2022 ctx->app_verify_arg=arg; 2023 } 2024 2025 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 2026 { 2027 ctx->verify_mode=mode; 2028 ctx->default_verify_callback=cb; 2029 } 2030 2031 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 2032 { 2033 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2034 } 2035 2036 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2037 { 2038 CERT_PKEY *cpk; 2039 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 2040 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 2041 int rsa_tmp_export,dh_tmp_export,kl; 2042 unsigned long mask_k,mask_a,emask_k,emask_a; 2043 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 2044 #ifndef OPENSSL_NO_ECDH 2045 int have_ecdh_tmp; 2046 #endif 2047 X509 *x = NULL; 2048 EVP_PKEY *ecc_pkey = NULL; 2049 int signature_nid = 0, pk_nid = 0, md_nid = 0; 2050 2051 if (c == NULL) return; 2052 2053 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 2054 2055 #ifndef OPENSSL_NO_RSA 2056 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 2057 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 2058 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 2059 #else 2060 rsa_tmp=rsa_tmp_export=0; 2061 #endif 2062 #ifndef OPENSSL_NO_DH 2063 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 2064 dh_tmp_export=(c->dh_tmp_cb != NULL || 2065 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 2066 #else 2067 dh_tmp=dh_tmp_export=0; 2068 #endif 2069 2070 #ifndef OPENSSL_NO_ECDH 2071 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 2072 #endif 2073 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 2074 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 2075 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2076 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2077 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2078 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 2079 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 2080 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 2081 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2082 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2083 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 2084 /* FIX THIS EAY EAY EAY */ 2085 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 2086 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 2087 cpk= &(c->pkeys[SSL_PKEY_ECC]); 2088 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 2089 mask_k=0; 2090 mask_a=0; 2091 emask_k=0; 2092 emask_a=0; 2093 2094 2095 2096 #ifdef CIPHER_DEBUG 2097 fprintf(stderr,"rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 2098 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 2099 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 2100 #endif 2101 2102 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2103 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2104 mask_k |= SSL_kGOST; 2105 mask_a |= SSL_aGOST01; 2106 } 2107 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 2108 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2109 mask_k |= SSL_kGOST; 2110 mask_a |= SSL_aGOST94; 2111 } 2112 2113 if (rsa_enc || (rsa_tmp && rsa_sign)) 2114 mask_k|=SSL_kRSA; 2115 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 2116 emask_k|=SSL_kRSA; 2117 2118 #if 0 2119 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 2120 if ( (dh_tmp || dh_rsa || dh_dsa) && 2121 (rsa_enc || rsa_sign || dsa_sign)) 2122 mask_k|=SSL_kEDH; 2123 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 2124 (rsa_enc || rsa_sign || dsa_sign)) 2125 emask_k|=SSL_kEDH; 2126 #endif 2127 2128 if (dh_tmp_export) 2129 emask_k|=SSL_kEDH; 2130 2131 if (dh_tmp) 2132 mask_k|=SSL_kEDH; 2133 2134 if (dh_rsa) mask_k|=SSL_kDHr; 2135 if (dh_rsa_export) emask_k|=SSL_kDHr; 2136 2137 if (dh_dsa) mask_k|=SSL_kDHd; 2138 if (dh_dsa_export) emask_k|=SSL_kDHd; 2139 2140 if (rsa_enc || rsa_sign) 2141 { 2142 mask_a|=SSL_aRSA; 2143 emask_a|=SSL_aRSA; 2144 } 2145 2146 if (dsa_sign) 2147 { 2148 mask_a|=SSL_aDSS; 2149 emask_a|=SSL_aDSS; 2150 } 2151 2152 mask_a|=SSL_aNULL; 2153 emask_a|=SSL_aNULL; 2154 2155 #ifndef OPENSSL_NO_KRB5 2156 mask_k|=SSL_kKRB5; 2157 mask_a|=SSL_aKRB5; 2158 emask_k|=SSL_kKRB5; 2159 emask_a|=SSL_aKRB5; 2160 #endif 2161 2162 /* An ECC certificate may be usable for ECDH and/or 2163 * ECDSA cipher suites depending on the key usage extension. 2164 */ 2165 if (have_ecc_cert) 2166 { 2167 /* This call populates extension flags (ex_flags) */ 2168 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2169 X509_check_purpose(x, -1, 0); 2170 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2171 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 2172 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 2173 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 2174 ecc_pkey = X509_get_pubkey(x); 2175 ecc_pkey_size = (ecc_pkey != NULL) ? 2176 EVP_PKEY_bits(ecc_pkey) : 0; 2177 EVP_PKEY_free(ecc_pkey); 2178 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2179 { 2180 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2181 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2182 } 2183 #ifndef OPENSSL_NO_ECDH 2184 if (ecdh_ok) 2185 { 2186 2187 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) 2188 { 2189 mask_k|=SSL_kECDHr; 2190 mask_a|=SSL_aECDH; 2191 if (ecc_pkey_size <= 163) 2192 { 2193 emask_k|=SSL_kECDHr; 2194 emask_a|=SSL_aECDH; 2195 } 2196 } 2197 2198 if (pk_nid == NID_X9_62_id_ecPublicKey) 2199 { 2200 mask_k|=SSL_kECDHe; 2201 mask_a|=SSL_aECDH; 2202 if (ecc_pkey_size <= 163) 2203 { 2204 emask_k|=SSL_kECDHe; 2205 emask_a|=SSL_aECDH; 2206 } 2207 } 2208 } 2209 #endif 2210 #ifndef OPENSSL_NO_ECDSA 2211 if (ecdsa_ok) 2212 { 2213 mask_a|=SSL_aECDSA; 2214 emask_a|=SSL_aECDSA; 2215 } 2216 #endif 2217 } 2218 2219 #ifndef OPENSSL_NO_ECDH 2220 if (have_ecdh_tmp) 2221 { 2222 mask_k|=SSL_kEECDH; 2223 emask_k|=SSL_kEECDH; 2224 } 2225 #endif 2226 2227 #ifndef OPENSSL_NO_PSK 2228 mask_k |= SSL_kPSK; 2229 mask_a |= SSL_aPSK; 2230 emask_k |= SSL_kPSK; 2231 emask_a |= SSL_aPSK; 2232 #endif 2233 2234 c->mask_k=mask_k; 2235 c->mask_a=mask_a; 2236 c->export_mask_k=emask_k; 2237 c->export_mask_a=emask_a; 2238 c->valid=1; 2239 } 2240 2241 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2242 #define ku_reject(x, usage) \ 2243 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2244 2245 #ifndef OPENSSL_NO_EC 2246 2247 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2248 { 2249 unsigned long alg_k, alg_a; 2250 EVP_PKEY *pkey = NULL; 2251 int keysize = 0; 2252 int signature_nid = 0, md_nid = 0, pk_nid = 0; 2253 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2254 2255 alg_k = cs->algorithm_mkey; 2256 alg_a = cs->algorithm_auth; 2257 2258 if (SSL_C_IS_EXPORT(cs)) 2259 { 2260 /* ECDH key length in export ciphers must be <= 163 bits */ 2261 pkey = X509_get_pubkey(x); 2262 if (pkey == NULL) return 0; 2263 keysize = EVP_PKEY_bits(pkey); 2264 EVP_PKEY_free(pkey); 2265 if (keysize > 163) return 0; 2266 } 2267 2268 /* This call populates the ex_flags field correctly */ 2269 X509_check_purpose(x, -1, 0); 2270 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2271 { 2272 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2273 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid); 2274 } 2275 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2276 { 2277 /* key usage, if present, must allow key agreement */ 2278 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2279 { 2280 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2281 return 0; 2282 } 2283 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2284 { 2285 /* signature alg must be ECDSA */ 2286 if (pk_nid != NID_X9_62_id_ecPublicKey) 2287 { 2288 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2289 return 0; 2290 } 2291 } 2292 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2293 { 2294 /* signature alg must be RSA */ 2295 2296 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) 2297 { 2298 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2299 return 0; 2300 } 2301 } 2302 } 2303 if (alg_a & SSL_aECDSA) 2304 { 2305 /* key usage, if present, must allow signing */ 2306 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2307 { 2308 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2309 return 0; 2310 } 2311 } 2312 2313 return 1; /* all checks are ok */ 2314 } 2315 2316 #endif 2317 2318 /* THIS NEEDS CLEANING UP */ 2319 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 2320 { 2321 unsigned long alg_k,alg_a; 2322 CERT *c; 2323 int i; 2324 2325 c=s->cert; 2326 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2327 2328 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2329 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2330 2331 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2332 { 2333 /* we don't need to look at SSL_kEECDH 2334 * since no certificate is needed for 2335 * anon ECDH and for authenticated 2336 * EECDH, the check for the auth 2337 * algorithm will set i correctly 2338 * NOTE: For ECDH-RSA, we need an ECC 2339 * not an RSA cert but for EECDH-RSA 2340 * we need an RSA cert. Placing the 2341 * checks for SSL_kECDH before RSA 2342 * checks ensures the correct cert is chosen. 2343 */ 2344 i=SSL_PKEY_ECC; 2345 } 2346 else if (alg_a & SSL_aECDSA) 2347 { 2348 i=SSL_PKEY_ECC; 2349 } 2350 else if (alg_k & SSL_kDHr) 2351 i=SSL_PKEY_DH_RSA; 2352 else if (alg_k & SSL_kDHd) 2353 i=SSL_PKEY_DH_DSA; 2354 else if (alg_a & SSL_aDSS) 2355 i=SSL_PKEY_DSA_SIGN; 2356 else if (alg_a & SSL_aRSA) 2357 { 2358 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2359 i=SSL_PKEY_RSA_SIGN; 2360 else 2361 i=SSL_PKEY_RSA_ENC; 2362 } 2363 else if (alg_a & SSL_aKRB5) 2364 { 2365 /* VRS something else here? */ 2366 return(NULL); 2367 } 2368 else if (alg_a & SSL_aGOST94) 2369 i=SSL_PKEY_GOST94; 2370 else if (alg_a & SSL_aGOST01) 2371 i=SSL_PKEY_GOST01; 2372 else /* if (alg_a & SSL_aNULL) */ 2373 { 2374 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2375 return(NULL); 2376 } 2377 2378 return c->pkeys + i; 2379 } 2380 2381 X509 *ssl_get_server_send_cert(const SSL *s) 2382 { 2383 CERT_PKEY *cpk; 2384 cpk = ssl_get_server_send_pkey(s); 2385 if (!cpk) 2386 return NULL; 2387 return cpk->x509; 2388 } 2389 2390 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2391 { 2392 unsigned long alg_a; 2393 CERT *c; 2394 int idx = -1; 2395 2396 alg_a = cipher->algorithm_auth; 2397 c=s->cert; 2398 2399 if ((alg_a & SSL_aDSS) && 2400 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2401 idx = SSL_PKEY_DSA_SIGN; 2402 else if (alg_a & SSL_aRSA) 2403 { 2404 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2405 idx = SSL_PKEY_RSA_SIGN; 2406 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2407 idx = SSL_PKEY_RSA_ENC; 2408 } 2409 else if ((alg_a & SSL_aECDSA) && 2410 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2411 idx = SSL_PKEY_ECC; 2412 if (idx == -1) 2413 { 2414 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2415 return(NULL); 2416 } 2417 if (pmd) 2418 *pmd = c->pkeys[idx].digest; 2419 return c->pkeys[idx].privatekey; 2420 } 2421 2422 void ssl_update_cache(SSL *s,int mode) 2423 { 2424 int i; 2425 2426 /* If the session_id_length is 0, we are not supposed to cache it, 2427 * and it would be rather hard to do anyway :-) */ 2428 if (s->session->session_id_length == 0) return; 2429 2430 i=s->session_ctx->session_cache_mode; 2431 if ((i & mode) && (!s->hit) 2432 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2433 || SSL_CTX_add_session(s->session_ctx,s->session)) 2434 && (s->session_ctx->new_session_cb != NULL)) 2435 { 2436 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2437 if (!s->session_ctx->new_session_cb(s,s->session)) 2438 SSL_SESSION_free(s->session); 2439 } 2440 2441 /* auto flush every 255 connections */ 2442 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2443 ((i & mode) == mode)) 2444 { 2445 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2446 ?s->session_ctx->stats.sess_connect_good 2447 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2448 { 2449 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2450 } 2451 } 2452 } 2453 2454 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2455 { 2456 return(s->method); 2457 } 2458 2459 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2460 { 2461 int conn= -1; 2462 int ret=1; 2463 2464 if (s->method != meth) 2465 { 2466 if (s->handshake_func != NULL) 2467 conn=(s->handshake_func == s->method->ssl_connect); 2468 2469 if (s->method->version == meth->version) 2470 s->method=meth; 2471 else 2472 { 2473 s->method->ssl_free(s); 2474 s->method=meth; 2475 ret=s->method->ssl_new(s); 2476 } 2477 2478 if (conn == 1) 2479 s->handshake_func=meth->ssl_connect; 2480 else if (conn == 0) 2481 s->handshake_func=meth->ssl_accept; 2482 } 2483 return(ret); 2484 } 2485 2486 int SSL_get_error(const SSL *s,int i) 2487 { 2488 int reason; 2489 unsigned long l; 2490 BIO *bio; 2491 2492 if (i > 0) return(SSL_ERROR_NONE); 2493 2494 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2495 * etc, where we do encode the error */ 2496 if ((l=ERR_peek_error()) != 0) 2497 { 2498 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2499 return(SSL_ERROR_SYSCALL); 2500 else 2501 return(SSL_ERROR_SSL); 2502 } 2503 2504 if ((i < 0) && SSL_want_read(s)) 2505 { 2506 bio=SSL_get_rbio(s); 2507 if (BIO_should_read(bio)) 2508 return(SSL_ERROR_WANT_READ); 2509 else if (BIO_should_write(bio)) 2510 /* This one doesn't make too much sense ... We never try 2511 * to write to the rbio, and an application program where 2512 * rbio and wbio are separate couldn't even know what it 2513 * should wait for. 2514 * However if we ever set s->rwstate incorrectly 2515 * (so that we have SSL_want_read(s) instead of 2516 * SSL_want_write(s)) and rbio and wbio *are* the same, 2517 * this test works around that bug; so it might be safer 2518 * to keep it. */ 2519 return(SSL_ERROR_WANT_WRITE); 2520 else if (BIO_should_io_special(bio)) 2521 { 2522 reason=BIO_get_retry_reason(bio); 2523 if (reason == BIO_RR_CONNECT) 2524 return(SSL_ERROR_WANT_CONNECT); 2525 else if (reason == BIO_RR_ACCEPT) 2526 return(SSL_ERROR_WANT_ACCEPT); 2527 else 2528 return(SSL_ERROR_SYSCALL); /* unknown */ 2529 } 2530 } 2531 2532 if ((i < 0) && SSL_want_write(s)) 2533 { 2534 bio=SSL_get_wbio(s); 2535 if (BIO_should_write(bio)) 2536 return(SSL_ERROR_WANT_WRITE); 2537 else if (BIO_should_read(bio)) 2538 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2539 return(SSL_ERROR_WANT_READ); 2540 else if (BIO_should_io_special(bio)) 2541 { 2542 reason=BIO_get_retry_reason(bio); 2543 if (reason == BIO_RR_CONNECT) 2544 return(SSL_ERROR_WANT_CONNECT); 2545 else if (reason == BIO_RR_ACCEPT) 2546 return(SSL_ERROR_WANT_ACCEPT); 2547 else 2548 return(SSL_ERROR_SYSCALL); 2549 } 2550 } 2551 if ((i < 0) && SSL_want_x509_lookup(s)) 2552 { 2553 return(SSL_ERROR_WANT_X509_LOOKUP); 2554 } 2555 2556 if (i == 0) 2557 { 2558 if (s->version == SSL2_VERSION) 2559 { 2560 /* assume it is the socket being closed */ 2561 return(SSL_ERROR_ZERO_RETURN); 2562 } 2563 else 2564 { 2565 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2566 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2567 return(SSL_ERROR_ZERO_RETURN); 2568 } 2569 } 2570 return(SSL_ERROR_SYSCALL); 2571 } 2572 2573 int SSL_do_handshake(SSL *s) 2574 { 2575 int ret=1; 2576 2577 if (s->handshake_func == NULL) 2578 { 2579 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2580 return(-1); 2581 } 2582 2583 s->method->ssl_renegotiate_check(s); 2584 2585 if (SSL_in_init(s) || SSL_in_before(s)) 2586 { 2587 ret=s->handshake_func(s); 2588 } 2589 return(ret); 2590 } 2591 2592 /* For the next 2 functions, SSL_clear() sets shutdown and so 2593 * one of these calls will reset it */ 2594 void SSL_set_accept_state(SSL *s) 2595 { 2596 s->server=1; 2597 s->shutdown=0; 2598 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2599 s->handshake_func=s->method->ssl_accept; 2600 /* clear the current cipher */ 2601 ssl_clear_cipher_ctx(s); 2602 ssl_clear_hash_ctx(&s->read_hash); 2603 ssl_clear_hash_ctx(&s->write_hash); 2604 } 2605 2606 void SSL_set_connect_state(SSL *s) 2607 { 2608 s->server=0; 2609 s->shutdown=0; 2610 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2611 s->handshake_func=s->method->ssl_connect; 2612 /* clear the current cipher */ 2613 ssl_clear_cipher_ctx(s); 2614 ssl_clear_hash_ctx(&s->read_hash); 2615 ssl_clear_hash_ctx(&s->write_hash); 2616 } 2617 2618 int ssl_undefined_function(SSL *s) 2619 { 2620 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2621 return(0); 2622 } 2623 2624 int ssl_undefined_void_function(void) 2625 { 2626 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2627 return(0); 2628 } 2629 2630 int ssl_undefined_const_function(const SSL *s) 2631 { 2632 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2633 return(0); 2634 } 2635 2636 SSL_METHOD *ssl_bad_method(int ver) 2637 { 2638 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2639 return(NULL); 2640 } 2641 2642 const char *SSL_get_version(const SSL *s) 2643 { 2644 if (s->version == TLS1_2_VERSION) 2645 return("TLSv1.2"); 2646 else if (s->version == TLS1_1_VERSION) 2647 return("TLSv1.1"); 2648 else if (s->version == TLS1_VERSION) 2649 return("TLSv1"); 2650 else if (s->version == SSL3_VERSION) 2651 return("SSLv3"); 2652 else if (s->version == SSL2_VERSION) 2653 return("SSLv2"); 2654 else 2655 return("unknown"); 2656 } 2657 2658 SSL *SSL_dup(SSL *s) 2659 { 2660 STACK_OF(X509_NAME) *sk; 2661 X509_NAME *xn; 2662 SSL *ret; 2663 int i; 2664 2665 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2666 return(NULL); 2667 2668 ret->version = s->version; 2669 ret->type = s->type; 2670 ret->method = s->method; 2671 2672 if (s->session != NULL) 2673 { 2674 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2675 SSL_copy_session_id(ret,s); 2676 } 2677 else 2678 { 2679 /* No session has been established yet, so we have to expect 2680 * that s->cert or ret->cert will be changed later -- 2681 * they should not both point to the same object, 2682 * and thus we can't use SSL_copy_session_id. */ 2683 2684 ret->method->ssl_free(ret); 2685 ret->method = s->method; 2686 ret->method->ssl_new(ret); 2687 2688 if (s->cert != NULL) 2689 { 2690 if (ret->cert != NULL) 2691 { 2692 ssl_cert_free(ret->cert); 2693 } 2694 ret->cert = ssl_cert_dup(s->cert); 2695 if (ret->cert == NULL) 2696 goto err; 2697 } 2698 2699 SSL_set_session_id_context(ret, 2700 s->sid_ctx, s->sid_ctx_length); 2701 } 2702 2703 ret->options=s->options; 2704 ret->mode=s->mode; 2705 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2706 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2707 ret->msg_callback = s->msg_callback; 2708 ret->msg_callback_arg = s->msg_callback_arg; 2709 SSL_set_verify(ret,SSL_get_verify_mode(s), 2710 SSL_get_verify_callback(s)); 2711 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2712 ret->generate_session_id = s->generate_session_id; 2713 2714 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2715 2716 ret->debug=s->debug; 2717 2718 /* copy app data, a little dangerous perhaps */ 2719 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2720 goto err; 2721 2722 /* setup rbio, and wbio */ 2723 if (s->rbio != NULL) 2724 { 2725 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2726 goto err; 2727 } 2728 if (s->wbio != NULL) 2729 { 2730 if (s->wbio != s->rbio) 2731 { 2732 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2733 goto err; 2734 } 2735 else 2736 ret->wbio=ret->rbio; 2737 } 2738 ret->rwstate = s->rwstate; 2739 ret->in_handshake = s->in_handshake; 2740 ret->handshake_func = s->handshake_func; 2741 ret->server = s->server; 2742 ret->renegotiate = s->renegotiate; 2743 ret->new_session = s->new_session; 2744 ret->quiet_shutdown = s->quiet_shutdown; 2745 ret->shutdown=s->shutdown; 2746 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2747 ret->rstate=s->rstate; 2748 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2749 ret->hit=s->hit; 2750 2751 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2752 2753 /* dup the cipher_list and cipher_list_by_id stacks */ 2754 if (s->cipher_list != NULL) 2755 { 2756 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2757 goto err; 2758 } 2759 if (s->cipher_list_by_id != NULL) 2760 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2761 == NULL) 2762 goto err; 2763 2764 /* Dup the client_CA list */ 2765 if (s->client_CA != NULL) 2766 { 2767 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2768 ret->client_CA=sk; 2769 for (i=0; i<sk_X509_NAME_num(sk); i++) 2770 { 2771 xn=sk_X509_NAME_value(sk,i); 2772 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2773 { 2774 X509_NAME_free(xn); 2775 goto err; 2776 } 2777 } 2778 } 2779 2780 if (0) 2781 { 2782 err: 2783 if (ret != NULL) SSL_free(ret); 2784 ret=NULL; 2785 } 2786 return(ret); 2787 } 2788 2789 void ssl_clear_cipher_ctx(SSL *s) 2790 { 2791 if (s->enc_read_ctx != NULL) 2792 { 2793 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2794 OPENSSL_free(s->enc_read_ctx); 2795 s->enc_read_ctx=NULL; 2796 } 2797 if (s->enc_write_ctx != NULL) 2798 { 2799 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2800 OPENSSL_free(s->enc_write_ctx); 2801 s->enc_write_ctx=NULL; 2802 } 2803 #ifndef OPENSSL_NO_COMP 2804 if (s->expand != NULL) 2805 { 2806 COMP_CTX_free(s->expand); 2807 s->expand=NULL; 2808 } 2809 if (s->compress != NULL) 2810 { 2811 COMP_CTX_free(s->compress); 2812 s->compress=NULL; 2813 } 2814 #endif 2815 } 2816 2817 /* Fix this function so that it takes an optional type parameter */ 2818 X509 *SSL_get_certificate(const SSL *s) 2819 { 2820 if (s->cert != NULL) 2821 return(s->cert->key->x509); 2822 else 2823 return(NULL); 2824 } 2825 2826 /* Fix this function so that it takes an optional type parameter */ 2827 EVP_PKEY *SSL_get_privatekey(SSL *s) 2828 { 2829 if (s->cert != NULL) 2830 return(s->cert->key->privatekey); 2831 else 2832 return(NULL); 2833 } 2834 2835 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2836 { 2837 if ((s->session != NULL) && (s->session->cipher != NULL)) 2838 return(s->session->cipher); 2839 return(NULL); 2840 } 2841 #ifdef OPENSSL_NO_COMP 2842 const void *SSL_get_current_compression(SSL *s) 2843 { 2844 return NULL; 2845 } 2846 const void *SSL_get_current_expansion(SSL *s) 2847 { 2848 return NULL; 2849 } 2850 #else 2851 2852 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2853 { 2854 if (s->compress != NULL) 2855 return(s->compress->meth); 2856 return(NULL); 2857 } 2858 2859 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2860 { 2861 if (s->expand != NULL) 2862 return(s->expand->meth); 2863 return(NULL); 2864 } 2865 #endif 2866 2867 int ssl_init_wbio_buffer(SSL *s,int push) 2868 { 2869 BIO *bbio; 2870 2871 if (s->bbio == NULL) 2872 { 2873 bbio=BIO_new(BIO_f_buffer()); 2874 if (bbio == NULL) return(0); 2875 s->bbio=bbio; 2876 } 2877 else 2878 { 2879 bbio=s->bbio; 2880 if (s->bbio == s->wbio) 2881 s->wbio=BIO_pop(s->wbio); 2882 } 2883 (void)BIO_reset(bbio); 2884 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2885 if (!BIO_set_read_buffer_size(bbio,1)) 2886 { 2887 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2888 return(0); 2889 } 2890 if (push) 2891 { 2892 if (s->wbio != bbio) 2893 s->wbio=BIO_push(bbio,s->wbio); 2894 } 2895 else 2896 { 2897 if (s->wbio == bbio) 2898 s->wbio=BIO_pop(bbio); 2899 } 2900 return(1); 2901 } 2902 2903 void ssl_free_wbio_buffer(SSL *s) 2904 { 2905 if (s->bbio == NULL) return; 2906 2907 if (s->bbio == s->wbio) 2908 { 2909 /* remove buffering */ 2910 s->wbio=BIO_pop(s->wbio); 2911 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2912 assert(s->wbio != NULL); 2913 #endif 2914 } 2915 BIO_free(s->bbio); 2916 s->bbio=NULL; 2917 } 2918 2919 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2920 { 2921 ctx->quiet_shutdown=mode; 2922 } 2923 2924 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2925 { 2926 return(ctx->quiet_shutdown); 2927 } 2928 2929 void SSL_set_quiet_shutdown(SSL *s,int mode) 2930 { 2931 s->quiet_shutdown=mode; 2932 } 2933 2934 int SSL_get_quiet_shutdown(const SSL *s) 2935 { 2936 return(s->quiet_shutdown); 2937 } 2938 2939 void SSL_set_shutdown(SSL *s,int mode) 2940 { 2941 s->shutdown=mode; 2942 } 2943 2944 int SSL_get_shutdown(const SSL *s) 2945 { 2946 return(s->shutdown); 2947 } 2948 2949 int SSL_version(const SSL *s) 2950 { 2951 return(s->version); 2952 } 2953 2954 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2955 { 2956 return(ssl->ctx); 2957 } 2958 2959 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2960 { 2961 CERT *ocert = ssl->cert; 2962 if (ssl->ctx == ctx) 2963 return ssl->ctx; 2964 #ifndef OPENSSL_NO_TLSEXT 2965 if (ctx == NULL) 2966 ctx = ssl->initial_ctx; 2967 #endif 2968 ssl->cert = ssl_cert_dup(ctx->cert); 2969 if (ocert != NULL) 2970 { 2971 int i; 2972 /* Copy negotiated digests from original */ 2973 for (i = 0; i < SSL_PKEY_NUM; i++) 2974 { 2975 CERT_PKEY *cpk = ocert->pkeys + i; 2976 CERT_PKEY *rpk = ssl->cert->pkeys + i; 2977 rpk->digest = cpk->digest; 2978 } 2979 ssl_cert_free(ocert); 2980 } 2981 2982 /* 2983 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH), 2984 * so setter APIs must prevent invalid lengths from entering the system. 2985 */ 2986 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)); 2987 2988 /* 2989 * If the session ID context matches that of the parent SSL_CTX, 2990 * inherit it from the new SSL_CTX as well. If however the context does 2991 * not match (i.e., it was set per-ssl with SSL_set_session_id_context), 2992 * leave it unchanged. 2993 */ 2994 if ((ssl->ctx != NULL) && 2995 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) && 2996 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) 2997 { 2998 ssl->sid_ctx_length = ctx->sid_ctx_length; 2999 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx)); 3000 } 3001 3002 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 3003 if (ssl->ctx != NULL) 3004 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 3005 ssl->ctx = ctx; 3006 3007 return(ssl->ctx); 3008 } 3009 3010 #ifndef OPENSSL_NO_STDIO 3011 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 3012 { 3013 return(X509_STORE_set_default_paths(ctx->cert_store)); 3014 } 3015 3016 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 3017 const char *CApath) 3018 { 3019 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 3020 } 3021 #endif 3022 3023 void SSL_set_info_callback(SSL *ssl, 3024 void (*cb)(const SSL *ssl,int type,int val)) 3025 { 3026 ssl->info_callback=cb; 3027 } 3028 3029 /* One compiler (Diab DCC) doesn't like argument names in returned 3030 function pointer. */ 3031 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 3032 { 3033 return ssl->info_callback; 3034 } 3035 3036 int SSL_state(const SSL *ssl) 3037 { 3038 return(ssl->state); 3039 } 3040 3041 void SSL_set_state(SSL *ssl, int state) 3042 { 3043 ssl->state = state; 3044 } 3045 3046 void SSL_set_verify_result(SSL *ssl,long arg) 3047 { 3048 ssl->verify_result=arg; 3049 } 3050 3051 long SSL_get_verify_result(const SSL *ssl) 3052 { 3053 return(ssl->verify_result); 3054 } 3055 3056 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3057 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3058 { 3059 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 3060 new_func, dup_func, free_func); 3061 } 3062 3063 int SSL_set_ex_data(SSL *s,int idx,void *arg) 3064 { 3065 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3066 } 3067 3068 void *SSL_get_ex_data(const SSL *s,int idx) 3069 { 3070 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3071 } 3072 3073 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 3074 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 3075 { 3076 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 3077 new_func, dup_func, free_func); 3078 } 3079 3080 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 3081 { 3082 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 3083 } 3084 3085 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 3086 { 3087 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 3088 } 3089 3090 int ssl_ok(SSL *s) 3091 { 3092 return(1); 3093 } 3094 3095 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 3096 { 3097 return(ctx->cert_store); 3098 } 3099 3100 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 3101 { 3102 if (ctx->cert_store != NULL) 3103 X509_STORE_free(ctx->cert_store); 3104 ctx->cert_store=store; 3105 } 3106 3107 int SSL_want(const SSL *s) 3108 { 3109 return(s->rwstate); 3110 } 3111 3112 /*! 3113 * \brief Set the callback for generating temporary RSA keys. 3114 * \param ctx the SSL context. 3115 * \param cb the callback 3116 */ 3117 3118 #ifndef OPENSSL_NO_RSA 3119 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 3120 int is_export, 3121 int keylength)) 3122 { 3123 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3124 } 3125 3126 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 3127 int is_export, 3128 int keylength)) 3129 { 3130 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 3131 } 3132 #endif 3133 3134 #ifdef DOXYGEN 3135 /*! 3136 * \brief The RSA temporary key callback function. 3137 * \param ssl the SSL session. 3138 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 3139 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 3140 * of the required key in bits. 3141 * \return the temporary RSA key. 3142 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 3143 */ 3144 3145 RSA *cb(SSL *ssl,int is_export,int keylength) 3146 {} 3147 #endif 3148 3149 /*! 3150 * \brief Set the callback for generating temporary DH keys. 3151 * \param ctx the SSL context. 3152 * \param dh the callback 3153 */ 3154 3155 #ifndef OPENSSL_NO_DH 3156 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 3157 int keylength)) 3158 { 3159 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3160 } 3161 3162 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 3163 int keylength)) 3164 { 3165 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 3166 } 3167 #endif 3168 3169 #ifndef OPENSSL_NO_ECDH 3170 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3171 int keylength)) 3172 { 3173 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3174 } 3175 3176 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 3177 int keylength)) 3178 { 3179 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3180 } 3181 #endif 3182 3183 #ifndef OPENSSL_NO_PSK 3184 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 3185 { 3186 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3187 { 3188 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3189 return 0; 3190 } 3191 if (ctx->psk_identity_hint != NULL) 3192 OPENSSL_free(ctx->psk_identity_hint); 3193 if (identity_hint != NULL) 3194 { 3195 ctx->psk_identity_hint = BUF_strdup(identity_hint); 3196 if (ctx->psk_identity_hint == NULL) 3197 return 0; 3198 } 3199 else 3200 ctx->psk_identity_hint = NULL; 3201 return 1; 3202 } 3203 3204 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 3205 { 3206 if (s == NULL) 3207 return 0; 3208 3209 if (s->session == NULL) 3210 return 1; /* session not created yet, ignored */ 3211 3212 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 3213 { 3214 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 3215 return 0; 3216 } 3217 if (s->session->psk_identity_hint != NULL) 3218 OPENSSL_free(s->session->psk_identity_hint); 3219 if (identity_hint != NULL) 3220 { 3221 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3222 if (s->session->psk_identity_hint == NULL) 3223 return 0; 3224 } 3225 else 3226 s->session->psk_identity_hint = NULL; 3227 return 1; 3228 } 3229 3230 const char *SSL_get_psk_identity_hint(const SSL *s) 3231 { 3232 if (s == NULL || s->session == NULL) 3233 return NULL; 3234 return(s->session->psk_identity_hint); 3235 } 3236 3237 const char *SSL_get_psk_identity(const SSL *s) 3238 { 3239 if (s == NULL || s->session == NULL) 3240 return NULL; 3241 return(s->session->psk_identity); 3242 } 3243 3244 void SSL_set_psk_client_callback(SSL *s, 3245 unsigned int (*cb)(SSL *ssl, const char *hint, 3246 char *identity, unsigned int max_identity_len, unsigned char *psk, 3247 unsigned int max_psk_len)) 3248 { 3249 s->psk_client_callback = cb; 3250 } 3251 3252 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3253 unsigned int (*cb)(SSL *ssl, const char *hint, 3254 char *identity, unsigned int max_identity_len, unsigned char *psk, 3255 unsigned int max_psk_len)) 3256 { 3257 ctx->psk_client_callback = cb; 3258 } 3259 3260 void SSL_set_psk_server_callback(SSL *s, 3261 unsigned int (*cb)(SSL *ssl, const char *identity, 3262 unsigned char *psk, unsigned int max_psk_len)) 3263 { 3264 s->psk_server_callback = cb; 3265 } 3266 3267 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3268 unsigned int (*cb)(SSL *ssl, const char *identity, 3269 unsigned char *psk, unsigned int max_psk_len)) 3270 { 3271 ctx->psk_server_callback = cb; 3272 } 3273 #endif 3274 3275 void 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)) 3276 { 3277 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3278 } 3279 void 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)) 3280 { 3281 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3282 } 3283 3284 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3285 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3286 * any. If EVP_MD pointer is passed, initializes ctx with this md 3287 * Returns newly allocated ctx; 3288 */ 3289 3290 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3291 { 3292 ssl_clear_hash_ctx(hash); 3293 *hash = EVP_MD_CTX_create(); 3294 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3295 return *hash; 3296 } 3297 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3298 { 3299 3300 if (*hash) EVP_MD_CTX_destroy(*hash); 3301 *hash=NULL; 3302 } 3303 3304 void SSL_set_debug(SSL *s, int debug) 3305 { 3306 s->debug = debug; 3307 } 3308 3309 int SSL_cache_hit(SSL *s) 3310 { 3311 return s->hit; 3312 } 3313 3314 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3315 #include "../crypto/bio/bss_file.c" 3316 #endif 3317 3318 IMPLEMENT_STACK_OF(SSL_CIPHER) 3319 IMPLEMENT_STACK_OF(SSL_COMP) 3320 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3321 ssl_cipher_id); 3322