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 }; 181 182 int SSL_clear(SSL *s) 183 { 184 185 if (s->method == NULL) 186 { 187 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 188 return(0); 189 } 190 191 if (ssl_clear_bad_session(s)) 192 { 193 SSL_SESSION_free(s->session); 194 s->session=NULL; 195 } 196 197 s->error=0; 198 s->hit=0; 199 s->shutdown=0; 200 201 #if 0 /* Disabled since version 1.10 of this file (early return not 202 * needed because SSL_clear is not called when doing renegotiation) */ 203 /* This is set if we are doing dynamic renegotiation so keep 204 * the old cipher. It is sort of a SSL_clear_lite :-) */ 205 if (s->new_session) return(1); 206 #else 207 if (s->new_session) 208 { 209 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 210 return 0; 211 } 212 #endif 213 214 s->type=0; 215 216 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 217 218 s->version=s->method->version; 219 s->client_version=s->version; 220 s->rwstate=SSL_NOTHING; 221 s->rstate=SSL_ST_READ_HEADER; 222 #if 0 223 s->read_ahead=s->ctx->read_ahead; 224 #endif 225 226 if (s->init_buf != NULL) 227 { 228 BUF_MEM_free(s->init_buf); 229 s->init_buf=NULL; 230 } 231 232 ssl_clear_cipher_ctx(s); 233 ssl_clear_hash_ctx(&s->read_hash); 234 ssl_clear_hash_ctx(&s->write_hash); 235 236 s->first_packet=0; 237 238 #if 1 239 /* Check to see if we were changed into a different method, if 240 * so, revert back if we are not doing session-id reuse. */ 241 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 242 { 243 s->method->ssl_free(s); 244 s->method=s->ctx->method; 245 if (!s->method->ssl_new(s)) 246 return(0); 247 } 248 else 249 #endif 250 s->method->ssl_clear(s); 251 return(1); 252 } 253 254 /** Used to change an SSL_CTXs default SSL method type */ 255 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth) 256 { 257 STACK_OF(SSL_CIPHER) *sk; 258 259 ctx->method=meth; 260 261 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 262 &(ctx->cipher_list_by_id), 263 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 264 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 265 { 266 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 267 return(0); 268 } 269 return(1); 270 } 271 272 SSL *SSL_new(SSL_CTX *ctx) 273 { 274 SSL *s; 275 276 if (ctx == NULL) 277 { 278 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 279 return(NULL); 280 } 281 if (ctx->method == NULL) 282 { 283 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 284 return(NULL); 285 } 286 287 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 288 if (s == NULL) goto err; 289 memset(s,0,sizeof(SSL)); 290 291 #ifndef OPENSSL_NO_KRB5 292 s->kssl_ctx = kssl_ctx_new(); 293 #endif /* OPENSSL_NO_KRB5 */ 294 295 s->options=ctx->options; 296 s->mode=ctx->mode; 297 s->max_cert_list=ctx->max_cert_list; 298 299 if (ctx->cert != NULL) 300 { 301 /* Earlier library versions used to copy the pointer to 302 * the CERT, not its contents; only when setting new 303 * parameters for the per-SSL copy, ssl_cert_new would be 304 * called (and the direct reference to the per-SSL_CTX 305 * settings would be lost, but those still were indirectly 306 * accessed for various purposes, and for that reason they 307 * used to be known as s->ctx->default_cert). 308 * Now we don't look at the SSL_CTX's CERT after having 309 * duplicated it once. */ 310 311 s->cert = ssl_cert_dup(ctx->cert); 312 if (s->cert == NULL) 313 goto err; 314 } 315 else 316 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 317 318 s->read_ahead=ctx->read_ahead; 319 s->msg_callback=ctx->msg_callback; 320 s->msg_callback_arg=ctx->msg_callback_arg; 321 s->verify_mode=ctx->verify_mode; 322 #if 0 323 s->verify_depth=ctx->verify_depth; 324 #endif 325 s->sid_ctx_length=ctx->sid_ctx_length; 326 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 327 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 328 s->verify_callback=ctx->default_verify_callback; 329 s->generate_session_id=ctx->generate_session_id; 330 331 s->param = X509_VERIFY_PARAM_new(); 332 if (!s->param) 333 goto err; 334 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 335 #if 0 336 s->purpose = ctx->purpose; 337 s->trust = ctx->trust; 338 #endif 339 s->quiet_shutdown=ctx->quiet_shutdown; 340 s->max_send_fragment = ctx->max_send_fragment; 341 342 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 343 s->ctx=ctx; 344 #ifndef OPENSSL_NO_TLSEXT 345 s->tlsext_debug_cb = 0; 346 s->tlsext_debug_arg = NULL; 347 s->tlsext_ticket_expected = 0; 348 s->tlsext_status_type = -1; 349 s->tlsext_status_expected = 0; 350 s->tlsext_ocsp_ids = NULL; 351 s->tlsext_ocsp_exts = NULL; 352 s->tlsext_ocsp_resp = NULL; 353 s->tlsext_ocsp_resplen = -1; 354 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 355 s->initial_ctx=ctx; 356 #endif 357 358 s->verify_result=X509_V_OK; 359 360 s->method=ctx->method; 361 362 if (!s->method->ssl_new(s)) 363 goto err; 364 365 s->references=1; 366 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 367 368 SSL_clear(s); 369 370 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 371 372 #ifndef OPENSSL_NO_PSK 373 s->psk_client_callback=ctx->psk_client_callback; 374 s->psk_server_callback=ctx->psk_server_callback; 375 #endif 376 377 return(s); 378 err: 379 if (s != NULL) 380 { 381 if (s->cert != NULL) 382 ssl_cert_free(s->cert); 383 if (s->ctx != NULL) 384 SSL_CTX_free(s->ctx); /* decrement reference count */ 385 OPENSSL_free(s); 386 } 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 OPENSSL_free(s); 590 } 591 592 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 593 { 594 /* If the output buffering BIO is still in place, remove it 595 */ 596 if (s->bbio != NULL) 597 { 598 if (s->wbio == s->bbio) 599 { 600 s->wbio=s->wbio->next_bio; 601 s->bbio->next_bio=NULL; 602 } 603 } 604 if ((s->rbio != NULL) && (s->rbio != rbio)) 605 BIO_free_all(s->rbio); 606 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 607 BIO_free_all(s->wbio); 608 s->rbio=rbio; 609 s->wbio=wbio; 610 } 611 612 BIO *SSL_get_rbio(const SSL *s) 613 { return(s->rbio); } 614 615 BIO *SSL_get_wbio(const SSL *s) 616 { return(s->wbio); } 617 618 int SSL_get_fd(const SSL *s) 619 { 620 return(SSL_get_rfd(s)); 621 } 622 623 int SSL_get_rfd(const SSL *s) 624 { 625 int ret= -1; 626 BIO *b,*r; 627 628 b=SSL_get_rbio(s); 629 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 630 if (r != NULL) 631 BIO_get_fd(r,&ret); 632 return(ret); 633 } 634 635 int SSL_get_wfd(const SSL *s) 636 { 637 int ret= -1; 638 BIO *b,*r; 639 640 b=SSL_get_wbio(s); 641 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 642 if (r != NULL) 643 BIO_get_fd(r,&ret); 644 return(ret); 645 } 646 647 #ifndef OPENSSL_NO_SOCK 648 int SSL_set_fd(SSL *s,int fd) 649 { 650 int ret=0; 651 BIO *bio=NULL; 652 653 bio=BIO_new(BIO_s_socket()); 654 655 if (bio == NULL) 656 { 657 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 658 goto err; 659 } 660 BIO_set_fd(bio,fd,BIO_NOCLOSE); 661 SSL_set_bio(s,bio,bio); 662 ret=1; 663 err: 664 return(ret); 665 } 666 667 int SSL_set_wfd(SSL *s,int fd) 668 { 669 int ret=0; 670 BIO *bio=NULL; 671 672 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 673 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 674 { 675 bio=BIO_new(BIO_s_socket()); 676 677 if (bio == NULL) 678 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 679 BIO_set_fd(bio,fd,BIO_NOCLOSE); 680 SSL_set_bio(s,SSL_get_rbio(s),bio); 681 } 682 else 683 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 684 ret=1; 685 err: 686 return(ret); 687 } 688 689 int SSL_set_rfd(SSL *s,int fd) 690 { 691 int ret=0; 692 BIO *bio=NULL; 693 694 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 695 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 696 { 697 bio=BIO_new(BIO_s_socket()); 698 699 if (bio == NULL) 700 { 701 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 702 goto err; 703 } 704 BIO_set_fd(bio,fd,BIO_NOCLOSE); 705 SSL_set_bio(s,bio,SSL_get_wbio(s)); 706 } 707 else 708 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 709 ret=1; 710 err: 711 return(ret); 712 } 713 #endif 714 715 716 /* return length of latest Finished message we sent, copy to 'buf' */ 717 size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 718 { 719 size_t ret = 0; 720 721 if (s->s3 != NULL) 722 { 723 ret = s->s3->tmp.finish_md_len; 724 if (count > ret) 725 count = ret; 726 memcpy(buf, s->s3->tmp.finish_md, count); 727 } 728 return ret; 729 } 730 731 /* return length of latest Finished message we expected, copy to 'buf' */ 732 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 733 { 734 size_t ret = 0; 735 736 if (s->s3 != NULL) 737 { 738 ret = s->s3->tmp.peer_finish_md_len; 739 if (count > ret) 740 count = ret; 741 memcpy(buf, s->s3->tmp.peer_finish_md, count); 742 } 743 return ret; 744 } 745 746 747 int SSL_get_verify_mode(const SSL *s) 748 { 749 return(s->verify_mode); 750 } 751 752 int SSL_get_verify_depth(const SSL *s) 753 { 754 return X509_VERIFY_PARAM_get_depth(s->param); 755 } 756 757 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 758 { 759 return(s->verify_callback); 760 } 761 762 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 763 { 764 return(ctx->verify_mode); 765 } 766 767 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 768 { 769 return X509_VERIFY_PARAM_get_depth(ctx->param); 770 } 771 772 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 773 { 774 return(ctx->default_verify_callback); 775 } 776 777 void SSL_set_verify(SSL *s,int mode, 778 int (*callback)(int ok,X509_STORE_CTX *ctx)) 779 { 780 s->verify_mode=mode; 781 if (callback != NULL) 782 s->verify_callback=callback; 783 } 784 785 void SSL_set_verify_depth(SSL *s,int depth) 786 { 787 X509_VERIFY_PARAM_set_depth(s->param, depth); 788 } 789 790 void SSL_set_read_ahead(SSL *s,int yes) 791 { 792 s->read_ahead=yes; 793 } 794 795 int SSL_get_read_ahead(const SSL *s) 796 { 797 return(s->read_ahead); 798 } 799 800 int SSL_pending(const SSL *s) 801 { 802 /* SSL_pending cannot work properly if read-ahead is enabled 803 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 804 * and it is impossible to fix since SSL_pending cannot report 805 * errors that may be observed while scanning the new data. 806 * (Note that SSL_pending() is often used as a boolean value, 807 * so we'd better not return -1.) 808 */ 809 return(s->method->ssl_pending(s)); 810 } 811 812 X509 *SSL_get_peer_certificate(const SSL *s) 813 { 814 X509 *r; 815 816 if ((s == NULL) || (s->session == NULL)) 817 r=NULL; 818 else 819 r=s->session->peer; 820 821 if (r == NULL) return(r); 822 823 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 824 825 return(r); 826 } 827 828 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 829 { 830 STACK_OF(X509) *r; 831 832 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 833 r=NULL; 834 else 835 r=s->session->sess_cert->cert_chain; 836 837 /* If we are a client, cert_chain includes the peer's own 838 * certificate; if we are a server, it does not. */ 839 840 return(r); 841 } 842 843 /* Now in theory, since the calling process own 't' it should be safe to 844 * modify. We need to be able to read f without being hassled */ 845 void SSL_copy_session_id(SSL *t,const SSL *f) 846 { 847 CERT *tmp; 848 849 /* Do we need to to SSL locking? */ 850 SSL_set_session(t,SSL_get_session(f)); 851 852 /* what if we are setup as SSLv2 but want to talk SSLv3 or 853 * vice-versa */ 854 if (t->method != f->method) 855 { 856 t->method->ssl_free(t); /* cleanup current */ 857 t->method=f->method; /* change method */ 858 t->method->ssl_new(t); /* setup new */ 859 } 860 861 tmp=t->cert; 862 if (f->cert != NULL) 863 { 864 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 865 t->cert=f->cert; 866 } 867 else 868 t->cert=NULL; 869 if (tmp != NULL) ssl_cert_free(tmp); 870 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 871 } 872 873 /* Fix this so it checks all the valid key/cert options */ 874 int SSL_CTX_check_private_key(const SSL_CTX *ctx) 875 { 876 if ( (ctx == NULL) || 877 (ctx->cert == NULL) || 878 (ctx->cert->key->x509 == NULL)) 879 { 880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 881 return(0); 882 } 883 if (ctx->cert->key->privatekey == NULL) 884 { 885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 886 return(0); 887 } 888 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 889 } 890 891 /* Fix this function so that it takes an optional type parameter */ 892 int SSL_check_private_key(const SSL *ssl) 893 { 894 if (ssl == NULL) 895 { 896 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 897 return(0); 898 } 899 if (ssl->cert == NULL) 900 { 901 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 902 return 0; 903 } 904 if (ssl->cert->key->x509 == NULL) 905 { 906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 907 return(0); 908 } 909 if (ssl->cert->key->privatekey == NULL) 910 { 911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 912 return(0); 913 } 914 return(X509_check_private_key(ssl->cert->key->x509, 915 ssl->cert->key->privatekey)); 916 } 917 918 int SSL_accept(SSL *s) 919 { 920 if (s->handshake_func == 0) 921 /* Not properly initialized yet */ 922 SSL_set_accept_state(s); 923 924 return(s->method->ssl_accept(s)); 925 } 926 927 int SSL_connect(SSL *s) 928 { 929 if (s->handshake_func == 0) 930 /* Not properly initialized yet */ 931 SSL_set_connect_state(s); 932 933 return(s->method->ssl_connect(s)); 934 } 935 936 long SSL_get_default_timeout(const SSL *s) 937 { 938 return(s->method->get_timeout()); 939 } 940 941 int SSL_read(SSL *s,void *buf,int num) 942 { 943 if (s->handshake_func == 0) 944 { 945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 946 return -1; 947 } 948 949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 950 { 951 s->rwstate=SSL_NOTHING; 952 return(0); 953 } 954 return(s->method->ssl_read(s,buf,num)); 955 } 956 957 int SSL_peek(SSL *s,void *buf,int num) 958 { 959 if (s->handshake_func == 0) 960 { 961 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 962 return -1; 963 } 964 965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 966 { 967 return(0); 968 } 969 return(s->method->ssl_peek(s,buf,num)); 970 } 971 972 int SSL_write(SSL *s,const void *buf,int num) 973 { 974 if (s->handshake_func == 0) 975 { 976 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 977 return -1; 978 } 979 980 if (s->shutdown & SSL_SENT_SHUTDOWN) 981 { 982 s->rwstate=SSL_NOTHING; 983 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 984 return(-1); 985 } 986 return(s->method->ssl_write(s,buf,num)); 987 } 988 989 int SSL_shutdown(SSL *s) 990 { 991 /* Note that this function behaves differently from what one might 992 * expect. Return values are 0 for no success (yet), 993 * 1 for success; but calling it once is usually not enough, 994 * even if blocking I/O is used (see ssl3_shutdown). 995 */ 996 997 if (s->handshake_func == 0) 998 { 999 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 1000 return -1; 1001 } 1002 1003 if ((s != NULL) && !SSL_in_init(s)) 1004 return(s->method->ssl_shutdown(s)); 1005 else 1006 return(1); 1007 } 1008 1009 int SSL_renegotiate(SSL *s) 1010 { 1011 if (s->new_session == 0) 1012 { 1013 s->new_session=1; 1014 } 1015 return(s->method->ssl_renegotiate(s)); 1016 } 1017 1018 int SSL_renegotiate_pending(SSL *s) 1019 { 1020 /* becomes true when negotiation is requested; 1021 * false again once a handshake has finished */ 1022 return (s->new_session != 0); 1023 } 1024 1025 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1026 { 1027 long l; 1028 1029 switch (cmd) 1030 { 1031 case SSL_CTRL_GET_READ_AHEAD: 1032 return(s->read_ahead); 1033 case SSL_CTRL_SET_READ_AHEAD: 1034 l=s->read_ahead; 1035 s->read_ahead=larg; 1036 return(l); 1037 1038 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1039 s->msg_callback_arg = parg; 1040 return 1; 1041 1042 case SSL_CTRL_OPTIONS: 1043 return(s->options|=larg); 1044 case SSL_CTRL_CLEAR_OPTIONS: 1045 return(s->options&=~larg); 1046 case SSL_CTRL_MODE: 1047 return(s->mode|=larg); 1048 case SSL_CTRL_CLEAR_MODE: 1049 return(s->mode &=~larg); 1050 case SSL_CTRL_GET_MAX_CERT_LIST: 1051 return(s->max_cert_list); 1052 case SSL_CTRL_SET_MAX_CERT_LIST: 1053 l=s->max_cert_list; 1054 s->max_cert_list=larg; 1055 return(l); 1056 case SSL_CTRL_SET_MTU: 1057 if (SSL_version(s) == DTLS1_VERSION || 1058 SSL_version(s) == DTLS1_BAD_VER) 1059 { 1060 s->d1->mtu = larg; 1061 return larg; 1062 } 1063 return 0; 1064 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1065 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1066 return 0; 1067 s->max_send_fragment = larg; 1068 return 1; 1069 case SSL_CTRL_GET_RI_SUPPORT: 1070 if (s->s3) 1071 return s->s3->send_connection_binding; 1072 else return 0; 1073 default: 1074 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1075 } 1076 } 1077 1078 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1079 { 1080 switch(cmd) 1081 { 1082 case SSL_CTRL_SET_MSG_CALLBACK: 1083 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1084 return 1; 1085 1086 default: 1087 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1088 } 1089 } 1090 1091 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1092 { 1093 return ctx->sessions; 1094 } 1095 1096 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1097 { 1098 long l; 1099 1100 switch (cmd) 1101 { 1102 case SSL_CTRL_GET_READ_AHEAD: 1103 return(ctx->read_ahead); 1104 case SSL_CTRL_SET_READ_AHEAD: 1105 l=ctx->read_ahead; 1106 ctx->read_ahead=larg; 1107 return(l); 1108 1109 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1110 ctx->msg_callback_arg = parg; 1111 return 1; 1112 1113 case SSL_CTRL_GET_MAX_CERT_LIST: 1114 return(ctx->max_cert_list); 1115 case SSL_CTRL_SET_MAX_CERT_LIST: 1116 l=ctx->max_cert_list; 1117 ctx->max_cert_list=larg; 1118 return(l); 1119 1120 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1121 l=ctx->session_cache_size; 1122 ctx->session_cache_size=larg; 1123 return(l); 1124 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1125 return(ctx->session_cache_size); 1126 case SSL_CTRL_SET_SESS_CACHE_MODE: 1127 l=ctx->session_cache_mode; 1128 ctx->session_cache_mode=larg; 1129 return(l); 1130 case SSL_CTRL_GET_SESS_CACHE_MODE: 1131 return(ctx->session_cache_mode); 1132 1133 case SSL_CTRL_SESS_NUMBER: 1134 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1135 case SSL_CTRL_SESS_CONNECT: 1136 return(ctx->stats.sess_connect); 1137 case SSL_CTRL_SESS_CONNECT_GOOD: 1138 return(ctx->stats.sess_connect_good); 1139 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1140 return(ctx->stats.sess_connect_renegotiate); 1141 case SSL_CTRL_SESS_ACCEPT: 1142 return(ctx->stats.sess_accept); 1143 case SSL_CTRL_SESS_ACCEPT_GOOD: 1144 return(ctx->stats.sess_accept_good); 1145 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1146 return(ctx->stats.sess_accept_renegotiate); 1147 case SSL_CTRL_SESS_HIT: 1148 return(ctx->stats.sess_hit); 1149 case SSL_CTRL_SESS_CB_HIT: 1150 return(ctx->stats.sess_cb_hit); 1151 case SSL_CTRL_SESS_MISSES: 1152 return(ctx->stats.sess_miss); 1153 case SSL_CTRL_SESS_TIMEOUTS: 1154 return(ctx->stats.sess_timeout); 1155 case SSL_CTRL_SESS_CACHE_FULL: 1156 return(ctx->stats.sess_cache_full); 1157 case SSL_CTRL_OPTIONS: 1158 return(ctx->options|=larg); 1159 case SSL_CTRL_CLEAR_OPTIONS: 1160 return(ctx->options&=~larg); 1161 case SSL_CTRL_MODE: 1162 return(ctx->mode|=larg); 1163 case SSL_CTRL_CLEAR_MODE: 1164 return(ctx->mode&=~larg); 1165 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1166 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1167 return 0; 1168 ctx->max_send_fragment = larg; 1169 return 1; 1170 default: 1171 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1172 } 1173 } 1174 1175 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1176 { 1177 switch(cmd) 1178 { 1179 case SSL_CTRL_SET_MSG_CALLBACK: 1180 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1181 return 1; 1182 1183 default: 1184 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1185 } 1186 } 1187 1188 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1189 { 1190 long l; 1191 1192 l=a->id-b->id; 1193 if (l == 0L) 1194 return(0); 1195 else 1196 return((l > 0)?1:-1); 1197 } 1198 1199 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1200 const SSL_CIPHER * const *bp) 1201 { 1202 long l; 1203 1204 l=(*ap)->id-(*bp)->id; 1205 if (l == 0L) 1206 return(0); 1207 else 1208 return((l > 0)?1:-1); 1209 } 1210 1211 /** return a STACK of the ciphers available for the SSL and in order of 1212 * preference */ 1213 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1214 { 1215 if (s != NULL) 1216 { 1217 if (s->cipher_list != NULL) 1218 { 1219 return(s->cipher_list); 1220 } 1221 else if ((s->ctx != NULL) && 1222 (s->ctx->cipher_list != NULL)) 1223 { 1224 return(s->ctx->cipher_list); 1225 } 1226 } 1227 return(NULL); 1228 } 1229 1230 /** return a STACK of the ciphers available for the SSL and in order of 1231 * algorithm id */ 1232 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1233 { 1234 if (s != NULL) 1235 { 1236 if (s->cipher_list_by_id != NULL) 1237 { 1238 return(s->cipher_list_by_id); 1239 } 1240 else if ((s->ctx != NULL) && 1241 (s->ctx->cipher_list_by_id != NULL)) 1242 { 1243 return(s->ctx->cipher_list_by_id); 1244 } 1245 } 1246 return(NULL); 1247 } 1248 1249 /** The old interface to get the same thing as SSL_get_ciphers() */ 1250 const char *SSL_get_cipher_list(const SSL *s,int n) 1251 { 1252 SSL_CIPHER *c; 1253 STACK_OF(SSL_CIPHER) *sk; 1254 1255 if (s == NULL) return(NULL); 1256 sk=SSL_get_ciphers(s); 1257 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1258 return(NULL); 1259 c=sk_SSL_CIPHER_value(sk,n); 1260 if (c == NULL) return(NULL); 1261 return(c->name); 1262 } 1263 1264 /** specify the ciphers to be used by default by the SSL_CTX */ 1265 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1266 { 1267 STACK_OF(SSL_CIPHER) *sk; 1268 1269 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1270 &ctx->cipher_list_by_id,str); 1271 /* ssl_create_cipher_list may return an empty stack if it 1272 * was unable to find a cipher matching the given rule string 1273 * (for example if the rule string specifies a cipher which 1274 * has been disabled). This is not an error as far as 1275 * ssl_create_cipher_list is concerned, and hence 1276 * ctx->cipher_list and ctx->cipher_list_by_id has been 1277 * updated. */ 1278 if (sk == NULL) 1279 return 0; 1280 else if (sk_SSL_CIPHER_num(sk) == 0) 1281 { 1282 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1283 return 0; 1284 } 1285 return 1; 1286 } 1287 1288 /** specify the ciphers to be used by the SSL */ 1289 int SSL_set_cipher_list(SSL *s,const char *str) 1290 { 1291 STACK_OF(SSL_CIPHER) *sk; 1292 1293 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1294 &s->cipher_list_by_id,str); 1295 /* see comment in SSL_CTX_set_cipher_list */ 1296 if (sk == NULL) 1297 return 0; 1298 else if (sk_SSL_CIPHER_num(sk) == 0) 1299 { 1300 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1301 return 0; 1302 } 1303 return 1; 1304 } 1305 1306 /* works well for SSLv2, not so good for SSLv3 */ 1307 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1308 { 1309 char *end; 1310 STACK_OF(SSL_CIPHER) *sk; 1311 SSL_CIPHER *c; 1312 size_t curlen = 0; 1313 int i; 1314 1315 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1316 (len < 2)) 1317 return(NULL); 1318 1319 sk=s->session->ciphers; 1320 buf[0] = '\0'; 1321 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1322 { 1323 c=sk_SSL_CIPHER_value(sk,i); 1324 end = buf + curlen; 1325 if (strlcat(buf, c->name, len) >= len || 1326 (curlen = strlcat(buf, ":", len)) >= len) 1327 { 1328 /* remove truncated cipher from list */ 1329 *end = '\0'; 1330 break; 1331 } 1332 } 1333 /* remove trailing colon */ 1334 if ((end = strrchr(buf, ':')) != NULL) 1335 *end = '\0'; 1336 return(buf); 1337 } 1338 1339 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1340 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1341 { 1342 int i,j=0; 1343 SSL_CIPHER *c; 1344 unsigned char *q; 1345 #ifndef OPENSSL_NO_KRB5 1346 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1347 #endif /* OPENSSL_NO_KRB5 */ 1348 1349 if (sk == NULL) return(0); 1350 q=p; 1351 1352 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1353 { 1354 c=sk_SSL_CIPHER_value(sk,i); 1355 #ifndef OPENSSL_NO_KRB5 1356 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1357 nokrb5) 1358 continue; 1359 #endif /* OPENSSL_NO_KRB5 */ 1360 #ifndef OPENSSL_NO_PSK 1361 /* with PSK there must be client callback set */ 1362 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1363 s->psk_client_callback == NULL) 1364 continue; 1365 #endif /* OPENSSL_NO_PSK */ 1366 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1367 p+=j; 1368 } 1369 /* If p == q, no ciphers and caller indicates an error. Otherwise 1370 * add SCSV if not renegotiating. 1371 */ 1372 if (p != q && !s->new_session) 1373 { 1374 static SSL_CIPHER scsv = 1375 { 1376 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1377 }; 1378 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p); 1379 p+=j; 1380 #ifdef OPENSSL_RI_DEBUG 1381 fprintf(stderr, "SCSV sent by client\n"); 1382 #endif 1383 } 1384 1385 return(p-q); 1386 } 1387 1388 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1389 STACK_OF(SSL_CIPHER) **skp) 1390 { 1391 const SSL_CIPHER *c; 1392 STACK_OF(SSL_CIPHER) *sk; 1393 int i,n; 1394 if (s->s3) 1395 s->s3->send_connection_binding = 0; 1396 1397 n=ssl_put_cipher_by_char(s,NULL,NULL); 1398 if ((num%n) != 0) 1399 { 1400 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1401 return(NULL); 1402 } 1403 if ((skp == NULL) || (*skp == NULL)) 1404 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1405 else 1406 { 1407 sk= *skp; 1408 sk_SSL_CIPHER_zero(sk); 1409 } 1410 1411 for (i=0; i<num; i+=n) 1412 { 1413 /* Check for SCSV */ 1414 if (s->s3 && (n != 3 || !p[0]) && 1415 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1416 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1417 { 1418 /* SCSV fatal if renegotiating */ 1419 if (s->new_session) 1420 { 1421 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1422 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1423 goto err; 1424 } 1425 s->s3->send_connection_binding = 1; 1426 p += n; 1427 #ifdef OPENSSL_RI_DEBUG 1428 fprintf(stderr, "SCSV received by server\n"); 1429 #endif 1430 continue; 1431 } 1432 1433 c=ssl_get_cipher_by_char(s,p); 1434 p+=n; 1435 if (c != NULL) 1436 { 1437 if (!sk_SSL_CIPHER_push(sk,c)) 1438 { 1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1440 goto err; 1441 } 1442 } 1443 } 1444 1445 if (skp != NULL) 1446 *skp=sk; 1447 return(sk); 1448 err: 1449 if ((skp == NULL) || (*skp == NULL)) 1450 sk_SSL_CIPHER_free(sk); 1451 return(NULL); 1452 } 1453 1454 1455 #ifndef OPENSSL_NO_TLSEXT 1456 /** return a servername extension value if provided in Client Hello, or NULL. 1457 * So far, only host_name types are defined (RFC 3546). 1458 */ 1459 1460 const char *SSL_get_servername(const SSL *s, const int type) 1461 { 1462 if (type != TLSEXT_NAMETYPE_host_name) 1463 return NULL; 1464 1465 return s->session && !s->tlsext_hostname ? 1466 s->session->tlsext_hostname : 1467 s->tlsext_hostname; 1468 } 1469 1470 int SSL_get_servername_type(const SSL *s) 1471 { 1472 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1473 return TLSEXT_NAMETYPE_host_name; 1474 return -1; 1475 } 1476 #endif 1477 1478 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1479 { 1480 unsigned long l; 1481 1482 l=(unsigned long) 1483 ((unsigned int) a->session_id[0] )| 1484 ((unsigned int) a->session_id[1]<< 8L)| 1485 ((unsigned long)a->session_id[2]<<16L)| 1486 ((unsigned long)a->session_id[3]<<24L); 1487 return(l); 1488 } 1489 1490 /* NB: If this function (or indeed the hash function which uses a sort of 1491 * coarser function than this one) is changed, ensure 1492 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1493 * able to construct an SSL_SESSION that will collide with any existing session 1494 * with a matching session ID. */ 1495 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1496 { 1497 if (a->ssl_version != b->ssl_version) 1498 return(1); 1499 if (a->session_id_length != b->session_id_length) 1500 return(1); 1501 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1502 } 1503 1504 /* These wrapper functions should remain rather than redeclaring 1505 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1506 * variable. The reason is that the functions aren't static, they're exposed via 1507 * ssl.h. */ 1508 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1509 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1510 1511 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1512 { 1513 SSL_CTX *ret=NULL; 1514 1515 if (meth == NULL) 1516 { 1517 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1518 return(NULL); 1519 } 1520 1521 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1522 { 1523 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1524 goto err; 1525 } 1526 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1527 if (ret == NULL) 1528 goto err; 1529 1530 memset(ret,0,sizeof(SSL_CTX)); 1531 1532 ret->method=meth; 1533 1534 ret->cert_store=NULL; 1535 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1536 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1537 ret->session_cache_head=NULL; 1538 ret->session_cache_tail=NULL; 1539 1540 /* We take the system default */ 1541 ret->session_timeout=meth->get_timeout(); 1542 1543 ret->new_session_cb=0; 1544 ret->remove_session_cb=0; 1545 ret->get_session_cb=0; 1546 ret->generate_session_id=0; 1547 1548 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1549 1550 ret->references=1; 1551 ret->quiet_shutdown=0; 1552 1553 /* ret->cipher=NULL;*/ 1554 /* ret->s2->challenge=NULL; 1555 ret->master_key=NULL; 1556 ret->key_arg=NULL; 1557 ret->s2->conn_id=NULL; */ 1558 1559 ret->info_callback=NULL; 1560 1561 ret->app_verify_callback=0; 1562 ret->app_verify_arg=NULL; 1563 1564 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1565 ret->read_ahead=0; 1566 ret->msg_callback=0; 1567 ret->msg_callback_arg=NULL; 1568 ret->verify_mode=SSL_VERIFY_NONE; 1569 #if 0 1570 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1571 #endif 1572 ret->sid_ctx_length=0; 1573 ret->default_verify_callback=NULL; 1574 if ((ret->cert=ssl_cert_new()) == NULL) 1575 goto err; 1576 1577 ret->default_passwd_callback=0; 1578 ret->default_passwd_callback_userdata=NULL; 1579 ret->client_cert_cb=0; 1580 ret->app_gen_cookie_cb=0; 1581 ret->app_verify_cookie_cb=0; 1582 1583 ret->sessions=lh_SSL_SESSION_new(); 1584 if (ret->sessions == NULL) goto err; 1585 ret->cert_store=X509_STORE_new(); 1586 if (ret->cert_store == NULL) goto err; 1587 1588 ssl_create_cipher_list(ret->method, 1589 &ret->cipher_list,&ret->cipher_list_by_id, 1590 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1591 if (ret->cipher_list == NULL 1592 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1593 { 1594 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1595 goto err2; 1596 } 1597 1598 ret->param = X509_VERIFY_PARAM_new(); 1599 if (!ret->param) 1600 goto err; 1601 1602 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1603 { 1604 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1605 goto err2; 1606 } 1607 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1608 { 1609 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1610 goto err2; 1611 } 1612 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1613 { 1614 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1615 goto err2; 1616 } 1617 1618 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1619 goto err; 1620 1621 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1622 1623 ret->extra_certs=NULL; 1624 ret->comp_methods=SSL_COMP_get_compression_methods(); 1625 1626 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1627 1628 #ifndef OPENSSL_NO_TLSEXT 1629 ret->tlsext_servername_callback = 0; 1630 ret->tlsext_servername_arg = NULL; 1631 /* Setup RFC4507 ticket keys */ 1632 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1633 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1634 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1635 ret->options |= SSL_OP_NO_TICKET; 1636 1637 ret->tlsext_status_cb = 0; 1638 ret->tlsext_status_arg = NULL; 1639 1640 #endif 1641 #ifndef OPENSSL_NO_PSK 1642 ret->psk_identity_hint=NULL; 1643 ret->psk_client_callback=NULL; 1644 ret->psk_server_callback=NULL; 1645 #endif 1646 #ifndef OPENSSL_NO_BUF_FREELISTS 1647 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1648 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1649 if (!ret->rbuf_freelist) 1650 goto err; 1651 ret->rbuf_freelist->chunklen = 0; 1652 ret->rbuf_freelist->len = 0; 1653 ret->rbuf_freelist->head = NULL; 1654 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1655 if (!ret->wbuf_freelist) 1656 { 1657 OPENSSL_free(ret->rbuf_freelist); 1658 goto err; 1659 } 1660 ret->wbuf_freelist->chunklen = 0; 1661 ret->wbuf_freelist->len = 0; 1662 ret->wbuf_freelist->head = NULL; 1663 #endif 1664 #ifndef OPENSSL_NO_ENGINE 1665 ret->client_cert_engine = NULL; 1666 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1667 #define eng_strx(x) #x 1668 #define eng_str(x) eng_strx(x) 1669 /* Use specific client engine automatically... ignore errors */ 1670 { 1671 ENGINE *eng; 1672 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1673 if (!eng) 1674 { 1675 ERR_clear_error(); 1676 ENGINE_load_builtin_engines(); 1677 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1678 } 1679 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1680 ERR_clear_error(); 1681 } 1682 #endif 1683 #endif 1684 /* Default is to connect to non-RI servers. When RI is more widely 1685 * deployed might change this. 1686 */ 1687 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1688 1689 return(ret); 1690 err: 1691 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1692 err2: 1693 if (ret != NULL) SSL_CTX_free(ret); 1694 return(NULL); 1695 } 1696 1697 #if 0 1698 static void SSL_COMP_free(SSL_COMP *comp) 1699 { OPENSSL_free(comp); } 1700 #endif 1701 1702 #ifndef OPENSSL_NO_BUF_FREELISTS 1703 static void 1704 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1705 { 1706 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1707 for (ent = list->head; ent; ent = next) 1708 { 1709 next = ent->next; 1710 OPENSSL_free(ent); 1711 } 1712 OPENSSL_free(list); 1713 } 1714 #endif 1715 1716 void SSL_CTX_free(SSL_CTX *a) 1717 { 1718 int i; 1719 1720 if (a == NULL) return; 1721 1722 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1723 #ifdef REF_PRINT 1724 REF_PRINT("SSL_CTX",a); 1725 #endif 1726 if (i > 0) return; 1727 #ifdef REF_CHECK 1728 if (i < 0) 1729 { 1730 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1731 abort(); /* ok */ 1732 } 1733 #endif 1734 1735 if (a->param) 1736 X509_VERIFY_PARAM_free(a->param); 1737 1738 /* 1739 * Free internal session cache. However: the remove_cb() may reference 1740 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1741 * after the sessions were flushed. 1742 * As the ex_data handling routines might also touch the session cache, 1743 * the most secure solution seems to be: empty (flush) the cache, then 1744 * free ex_data, then finally free the cache. 1745 * (See ticket [openssl.org #212].) 1746 */ 1747 if (a->sessions != NULL) 1748 SSL_CTX_flush_sessions(a,0); 1749 1750 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1751 1752 if (a->sessions != NULL) 1753 lh_SSL_SESSION_free(a->sessions); 1754 1755 if (a->cert_store != NULL) 1756 X509_STORE_free(a->cert_store); 1757 if (a->cipher_list != NULL) 1758 sk_SSL_CIPHER_free(a->cipher_list); 1759 if (a->cipher_list_by_id != NULL) 1760 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1761 if (a->cert != NULL) 1762 ssl_cert_free(a->cert); 1763 if (a->client_CA != NULL) 1764 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1765 if (a->extra_certs != NULL) 1766 sk_X509_pop_free(a->extra_certs,X509_free); 1767 #if 0 /* This should never be done, since it removes a global database */ 1768 if (a->comp_methods != NULL) 1769 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1770 #else 1771 a->comp_methods = NULL; 1772 #endif 1773 1774 #ifndef OPENSSL_NO_PSK 1775 if (a->psk_identity_hint) 1776 OPENSSL_free(a->psk_identity_hint); 1777 #endif 1778 #ifndef OPENSSL_NO_ENGINE 1779 if (a->client_cert_engine) 1780 ENGINE_finish(a->client_cert_engine); 1781 #endif 1782 1783 #ifndef OPENSSL_NO_BUF_FREELISTS 1784 if (a->wbuf_freelist) 1785 ssl_buf_freelist_free(a->wbuf_freelist); 1786 if (a->rbuf_freelist) 1787 ssl_buf_freelist_free(a->rbuf_freelist); 1788 #endif 1789 1790 OPENSSL_free(a); 1791 } 1792 1793 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1794 { 1795 ctx->default_passwd_callback=cb; 1796 } 1797 1798 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1799 { 1800 ctx->default_passwd_callback_userdata=u; 1801 } 1802 1803 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1804 { 1805 ctx->app_verify_callback=cb; 1806 ctx->app_verify_arg=arg; 1807 } 1808 1809 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1810 { 1811 ctx->verify_mode=mode; 1812 ctx->default_verify_callback=cb; 1813 } 1814 1815 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1816 { 1817 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1818 } 1819 1820 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1821 { 1822 CERT_PKEY *cpk; 1823 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1824 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1825 int rsa_tmp_export,dh_tmp_export,kl; 1826 unsigned long mask_k,mask_a,emask_k,emask_a; 1827 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1828 #ifndef OPENSSL_NO_ECDH 1829 int have_ecdh_tmp; 1830 #endif 1831 X509 *x = NULL; 1832 EVP_PKEY *ecc_pkey = NULL; 1833 int signature_nid = 0; 1834 1835 if (c == NULL) return; 1836 1837 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1838 1839 #ifndef OPENSSL_NO_RSA 1840 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1841 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1842 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1843 #else 1844 rsa_tmp=rsa_tmp_export=0; 1845 #endif 1846 #ifndef OPENSSL_NO_DH 1847 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1848 dh_tmp_export=(c->dh_tmp_cb != NULL || 1849 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1850 #else 1851 dh_tmp=dh_tmp_export=0; 1852 #endif 1853 1854 #ifndef OPENSSL_NO_ECDH 1855 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1856 #endif 1857 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1858 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1859 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1860 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1861 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1862 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1863 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1864 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1865 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1866 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1867 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1868 /* FIX THIS EAY EAY EAY */ 1869 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1870 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1871 cpk= &(c->pkeys[SSL_PKEY_ECC]); 1872 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 1873 mask_k=0; 1874 mask_a=0; 1875 emask_k=0; 1876 emask_a=0; 1877 1878 1879 1880 #ifdef CIPHER_DEBUG 1881 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1882 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 1883 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1884 #endif 1885 1886 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1887 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1888 mask_k |= SSL_kGOST; 1889 mask_a |= SSL_aGOST01; 1890 } 1891 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1892 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1893 mask_k |= SSL_kGOST; 1894 mask_a |= SSL_aGOST94; 1895 } 1896 1897 if (rsa_enc || (rsa_tmp && rsa_sign)) 1898 mask_k|=SSL_kRSA; 1899 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1900 emask_k|=SSL_kRSA; 1901 1902 #if 0 1903 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1904 if ( (dh_tmp || dh_rsa || dh_dsa) && 1905 (rsa_enc || rsa_sign || dsa_sign)) 1906 mask_k|=SSL_kEDH; 1907 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1908 (rsa_enc || rsa_sign || dsa_sign)) 1909 emask_k|=SSL_kEDH; 1910 #endif 1911 1912 if (dh_tmp_export) 1913 emask_k|=SSL_kEDH; 1914 1915 if (dh_tmp) 1916 mask_k|=SSL_kEDH; 1917 1918 if (dh_rsa) mask_k|=SSL_kDHr; 1919 if (dh_rsa_export) emask_k|=SSL_kDHr; 1920 1921 if (dh_dsa) mask_k|=SSL_kDHd; 1922 if (dh_dsa_export) emask_k|=SSL_kDHd; 1923 1924 if (rsa_enc || rsa_sign) 1925 { 1926 mask_a|=SSL_aRSA; 1927 emask_a|=SSL_aRSA; 1928 } 1929 1930 if (dsa_sign) 1931 { 1932 mask_a|=SSL_aDSS; 1933 emask_a|=SSL_aDSS; 1934 } 1935 1936 mask_a|=SSL_aNULL; 1937 emask_a|=SSL_aNULL; 1938 1939 #ifndef OPENSSL_NO_KRB5 1940 mask_k|=SSL_kKRB5; 1941 mask_a|=SSL_aKRB5; 1942 emask_k|=SSL_kKRB5; 1943 emask_a|=SSL_aKRB5; 1944 #endif 1945 1946 /* An ECC certificate may be usable for ECDH and/or 1947 * ECDSA cipher suites depending on the key usage extension. 1948 */ 1949 if (have_ecc_cert) 1950 { 1951 /* This call populates extension flags (ex_flags) */ 1952 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1953 X509_check_purpose(x, -1, 0); 1954 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1955 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 1956 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1957 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 1958 ecc_pkey = X509_get_pubkey(x); 1959 ecc_pkey_size = (ecc_pkey != NULL) ? 1960 EVP_PKEY_bits(ecc_pkey) : 0; 1961 EVP_PKEY_free(ecc_pkey); 1962 if ((x->sig_alg) && (x->sig_alg->algorithm)) 1963 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 1964 #ifndef OPENSSL_NO_ECDH 1965 if (ecdh_ok) 1966 { 1967 const char *sig = OBJ_nid2ln(signature_nid); 1968 if (sig == NULL) 1969 { 1970 ERR_clear_error(); 1971 sig = "unknown"; 1972 } 1973 1974 if (strstr(sig, "WithRSA")) 1975 { 1976 mask_k|=SSL_kECDHr; 1977 mask_a|=SSL_aECDH; 1978 if (ecc_pkey_size <= 163) 1979 { 1980 emask_k|=SSL_kECDHr; 1981 emask_a|=SSL_aECDH; 1982 } 1983 } 1984 1985 if (signature_nid == NID_ecdsa_with_SHA1) 1986 { 1987 mask_k|=SSL_kECDHe; 1988 mask_a|=SSL_aECDH; 1989 if (ecc_pkey_size <= 163) 1990 { 1991 emask_k|=SSL_kECDHe; 1992 emask_a|=SSL_aECDH; 1993 } 1994 } 1995 } 1996 #endif 1997 #ifndef OPENSSL_NO_ECDSA 1998 if (ecdsa_ok) 1999 { 2000 mask_a|=SSL_aECDSA; 2001 emask_a|=SSL_aECDSA; 2002 } 2003 #endif 2004 } 2005 2006 #ifndef OPENSSL_NO_ECDH 2007 if (have_ecdh_tmp) 2008 { 2009 mask_k|=SSL_kEECDH; 2010 emask_k|=SSL_kEECDH; 2011 } 2012 #endif 2013 2014 #ifndef OPENSSL_NO_PSK 2015 mask_k |= SSL_kPSK; 2016 mask_a |= SSL_aPSK; 2017 emask_k |= SSL_kPSK; 2018 emask_a |= SSL_aPSK; 2019 #endif 2020 2021 c->mask_k=mask_k; 2022 c->mask_a=mask_a; 2023 c->export_mask_k=emask_k; 2024 c->export_mask_a=emask_a; 2025 c->valid=1; 2026 } 2027 2028 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2029 #define ku_reject(x, usage) \ 2030 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2031 2032 #ifndef OPENSSL_NO_EC 2033 2034 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs) 2035 { 2036 unsigned long alg_k, alg_a; 2037 EVP_PKEY *pkey = NULL; 2038 int keysize = 0; 2039 int signature_nid = 0; 2040 2041 alg_k = cs->algorithm_mkey; 2042 alg_a = cs->algorithm_auth; 2043 2044 if (SSL_C_IS_EXPORT(cs)) 2045 { 2046 /* ECDH key length in export ciphers must be <= 163 bits */ 2047 pkey = X509_get_pubkey(x); 2048 if (pkey == NULL) return 0; 2049 keysize = EVP_PKEY_bits(pkey); 2050 EVP_PKEY_free(pkey); 2051 if (keysize > 163) return 0; 2052 } 2053 2054 /* This call populates the ex_flags field correctly */ 2055 X509_check_purpose(x, -1, 0); 2056 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2057 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2058 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2059 { 2060 /* key usage, if present, must allow key agreement */ 2061 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2062 { 2063 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2064 return 0; 2065 } 2066 if (alg_k & SSL_kECDHe) 2067 { 2068 /* signature alg must be ECDSA */ 2069 if (signature_nid != NID_ecdsa_with_SHA1) 2070 { 2071 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2072 return 0; 2073 } 2074 } 2075 if (alg_k & SSL_kECDHr) 2076 { 2077 /* signature alg must be RSA */ 2078 2079 const char *sig = OBJ_nid2ln(signature_nid); 2080 if (sig == NULL) 2081 { 2082 ERR_clear_error(); 2083 sig = "unknown"; 2084 } 2085 if (strstr(sig, "WithRSA") == NULL) 2086 { 2087 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2088 return 0; 2089 } 2090 } 2091 } 2092 if (alg_a & SSL_aECDSA) 2093 { 2094 /* key usage, if present, must allow signing */ 2095 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2096 { 2097 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2098 return 0; 2099 } 2100 } 2101 2102 return 1; /* all checks are ok */ 2103 } 2104 2105 #endif 2106 2107 /* THIS NEEDS CLEANING UP */ 2108 X509 *ssl_get_server_send_cert(SSL *s) 2109 { 2110 unsigned long alg_k,alg_a,mask_k,mask_a; 2111 CERT *c; 2112 int i,is_export; 2113 2114 c=s->cert; 2115 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2116 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); 2117 if (is_export) 2118 { 2119 mask_k = c->export_mask_k; 2120 mask_a = c->export_mask_a; 2121 } 2122 else 2123 { 2124 mask_k = c->mask_k; 2125 mask_a = c->mask_a; 2126 } 2127 2128 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2129 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2130 2131 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2132 { 2133 /* we don't need to look at SSL_kEECDH 2134 * since no certificate is needed for 2135 * anon ECDH and for authenticated 2136 * EECDH, the check for the auth 2137 * algorithm will set i correctly 2138 * NOTE: For ECDH-RSA, we need an ECC 2139 * not an RSA cert but for EECDH-RSA 2140 * we need an RSA cert. Placing the 2141 * checks for SSL_kECDH before RSA 2142 * checks ensures the correct cert is chosen. 2143 */ 2144 i=SSL_PKEY_ECC; 2145 } 2146 else if (alg_a & SSL_aECDSA) 2147 { 2148 i=SSL_PKEY_ECC; 2149 } 2150 else if (alg_k & SSL_kDHr) 2151 i=SSL_PKEY_DH_RSA; 2152 else if (alg_k & SSL_kDHd) 2153 i=SSL_PKEY_DH_DSA; 2154 else if (alg_a & SSL_aDSS) 2155 i=SSL_PKEY_DSA_SIGN; 2156 else if (alg_a & SSL_aRSA) 2157 { 2158 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2159 i=SSL_PKEY_RSA_SIGN; 2160 else 2161 i=SSL_PKEY_RSA_ENC; 2162 } 2163 else if (alg_a & SSL_aKRB5) 2164 { 2165 /* VRS something else here? */ 2166 return(NULL); 2167 } 2168 else if (alg_a & SSL_aGOST94) 2169 i=SSL_PKEY_GOST94; 2170 else if (alg_a & SSL_aGOST01) 2171 i=SSL_PKEY_GOST01; 2172 else /* if (alg_a & SSL_aNULL) */ 2173 { 2174 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 2175 return(NULL); 2176 } 2177 if (c->pkeys[i].x509 == NULL) return(NULL); 2178 2179 return(c->pkeys[i].x509); 2180 } 2181 2182 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher) 2183 { 2184 unsigned long alg_a; 2185 CERT *c; 2186 2187 alg_a = cipher->algorithm_auth; 2188 c=s->cert; 2189 2190 if ((alg_a & SSL_aDSS) && 2191 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2192 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 2193 else if (alg_a & SSL_aRSA) 2194 { 2195 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2196 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 2197 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2198 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 2199 else 2200 return(NULL); 2201 } 2202 else if ((alg_a & SSL_aECDSA) && 2203 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2204 return(c->pkeys[SSL_PKEY_ECC].privatekey); 2205 else /* if (alg_a & SSL_aNULL) */ 2206 { 2207 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2208 return(NULL); 2209 } 2210 } 2211 2212 void ssl_update_cache(SSL *s,int mode) 2213 { 2214 int i; 2215 2216 /* If the session_id_length is 0, we are not supposed to cache it, 2217 * and it would be rather hard to do anyway :-) */ 2218 if (s->session->session_id_length == 0) return; 2219 2220 i=s->session_ctx->session_cache_mode; 2221 if ((i & mode) && (!s->hit) 2222 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2223 || SSL_CTX_add_session(s->session_ctx,s->session)) 2224 && (s->session_ctx->new_session_cb != NULL)) 2225 { 2226 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2227 if (!s->session_ctx->new_session_cb(s,s->session)) 2228 SSL_SESSION_free(s->session); 2229 } 2230 2231 /* auto flush every 255 connections */ 2232 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2233 ((i & mode) == mode)) 2234 { 2235 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2236 ?s->session_ctx->stats.sess_connect_good 2237 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2238 { 2239 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2240 } 2241 } 2242 } 2243 2244 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2245 { 2246 return(s->method); 2247 } 2248 2249 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2250 { 2251 int conn= -1; 2252 int ret=1; 2253 2254 if (s->method != meth) 2255 { 2256 if (s->handshake_func != NULL) 2257 conn=(s->handshake_func == s->method->ssl_connect); 2258 2259 if (s->method->version == meth->version) 2260 s->method=meth; 2261 else 2262 { 2263 s->method->ssl_free(s); 2264 s->method=meth; 2265 ret=s->method->ssl_new(s); 2266 } 2267 2268 if (conn == 1) 2269 s->handshake_func=meth->ssl_connect; 2270 else if (conn == 0) 2271 s->handshake_func=meth->ssl_accept; 2272 } 2273 return(ret); 2274 } 2275 2276 int SSL_get_error(const SSL *s,int i) 2277 { 2278 int reason; 2279 unsigned long l; 2280 BIO *bio; 2281 2282 if (i > 0) return(SSL_ERROR_NONE); 2283 2284 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2285 * etc, where we do encode the error */ 2286 if ((l=ERR_peek_error()) != 0) 2287 { 2288 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2289 return(SSL_ERROR_SYSCALL); 2290 else 2291 return(SSL_ERROR_SSL); 2292 } 2293 2294 if ((i < 0) && SSL_want_read(s)) 2295 { 2296 bio=SSL_get_rbio(s); 2297 if (BIO_should_read(bio)) 2298 return(SSL_ERROR_WANT_READ); 2299 else if (BIO_should_write(bio)) 2300 /* This one doesn't make too much sense ... We never try 2301 * to write to the rbio, and an application program where 2302 * rbio and wbio are separate couldn't even know what it 2303 * should wait for. 2304 * However if we ever set s->rwstate incorrectly 2305 * (so that we have SSL_want_read(s) instead of 2306 * SSL_want_write(s)) and rbio and wbio *are* the same, 2307 * this test works around that bug; so it might be safer 2308 * to keep it. */ 2309 return(SSL_ERROR_WANT_WRITE); 2310 else if (BIO_should_io_special(bio)) 2311 { 2312 reason=BIO_get_retry_reason(bio); 2313 if (reason == BIO_RR_CONNECT) 2314 return(SSL_ERROR_WANT_CONNECT); 2315 else if (reason == BIO_RR_ACCEPT) 2316 return(SSL_ERROR_WANT_ACCEPT); 2317 else 2318 return(SSL_ERROR_SYSCALL); /* unknown */ 2319 } 2320 } 2321 2322 if ((i < 0) && SSL_want_write(s)) 2323 { 2324 bio=SSL_get_wbio(s); 2325 if (BIO_should_write(bio)) 2326 return(SSL_ERROR_WANT_WRITE); 2327 else if (BIO_should_read(bio)) 2328 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2329 return(SSL_ERROR_WANT_READ); 2330 else if (BIO_should_io_special(bio)) 2331 { 2332 reason=BIO_get_retry_reason(bio); 2333 if (reason == BIO_RR_CONNECT) 2334 return(SSL_ERROR_WANT_CONNECT); 2335 else if (reason == BIO_RR_ACCEPT) 2336 return(SSL_ERROR_WANT_ACCEPT); 2337 else 2338 return(SSL_ERROR_SYSCALL); 2339 } 2340 } 2341 if ((i < 0) && SSL_want_x509_lookup(s)) 2342 { 2343 return(SSL_ERROR_WANT_X509_LOOKUP); 2344 } 2345 2346 if (i == 0) 2347 { 2348 if (s->version == SSL2_VERSION) 2349 { 2350 /* assume it is the socket being closed */ 2351 return(SSL_ERROR_ZERO_RETURN); 2352 } 2353 else 2354 { 2355 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2356 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2357 return(SSL_ERROR_ZERO_RETURN); 2358 } 2359 } 2360 return(SSL_ERROR_SYSCALL); 2361 } 2362 2363 int SSL_do_handshake(SSL *s) 2364 { 2365 int ret=1; 2366 2367 if (s->handshake_func == NULL) 2368 { 2369 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2370 return(-1); 2371 } 2372 2373 s->method->ssl_renegotiate_check(s); 2374 2375 if (SSL_in_init(s) || SSL_in_before(s)) 2376 { 2377 ret=s->handshake_func(s); 2378 } 2379 return(ret); 2380 } 2381 2382 /* For the next 2 functions, SSL_clear() sets shutdown and so 2383 * one of these calls will reset it */ 2384 void SSL_set_accept_state(SSL *s) 2385 { 2386 s->server=1; 2387 s->shutdown=0; 2388 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2389 s->handshake_func=s->method->ssl_accept; 2390 /* clear the current cipher */ 2391 ssl_clear_cipher_ctx(s); 2392 ssl_clear_hash_ctx(&s->read_hash); 2393 ssl_clear_hash_ctx(&s->write_hash); 2394 } 2395 2396 void SSL_set_connect_state(SSL *s) 2397 { 2398 s->server=0; 2399 s->shutdown=0; 2400 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2401 s->handshake_func=s->method->ssl_connect; 2402 /* clear the current cipher */ 2403 ssl_clear_cipher_ctx(s); 2404 ssl_clear_hash_ctx(&s->read_hash); 2405 ssl_clear_hash_ctx(&s->write_hash); 2406 } 2407 2408 int ssl_undefined_function(SSL *s) 2409 { 2410 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2411 return(0); 2412 } 2413 2414 int ssl_undefined_void_function(void) 2415 { 2416 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2417 return(0); 2418 } 2419 2420 int ssl_undefined_const_function(const SSL *s) 2421 { 2422 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2423 return(0); 2424 } 2425 2426 SSL_METHOD *ssl_bad_method(int ver) 2427 { 2428 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2429 return(NULL); 2430 } 2431 2432 const char *SSL_get_version(const SSL *s) 2433 { 2434 if (s->version == TLS1_VERSION) 2435 return("TLSv1"); 2436 else if (s->version == SSL3_VERSION) 2437 return("SSLv3"); 2438 else if (s->version == SSL2_VERSION) 2439 return("SSLv2"); 2440 else 2441 return("unknown"); 2442 } 2443 2444 SSL *SSL_dup(SSL *s) 2445 { 2446 STACK_OF(X509_NAME) *sk; 2447 X509_NAME *xn; 2448 SSL *ret; 2449 int i; 2450 2451 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2452 return(NULL); 2453 2454 ret->version = s->version; 2455 ret->type = s->type; 2456 ret->method = s->method; 2457 2458 if (s->session != NULL) 2459 { 2460 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2461 SSL_copy_session_id(ret,s); 2462 } 2463 else 2464 { 2465 /* No session has been established yet, so we have to expect 2466 * that s->cert or ret->cert will be changed later -- 2467 * they should not both point to the same object, 2468 * and thus we can't use SSL_copy_session_id. */ 2469 2470 ret->method->ssl_free(ret); 2471 ret->method = s->method; 2472 ret->method->ssl_new(ret); 2473 2474 if (s->cert != NULL) 2475 { 2476 if (ret->cert != NULL) 2477 { 2478 ssl_cert_free(ret->cert); 2479 } 2480 ret->cert = ssl_cert_dup(s->cert); 2481 if (ret->cert == NULL) 2482 goto err; 2483 } 2484 2485 SSL_set_session_id_context(ret, 2486 s->sid_ctx, s->sid_ctx_length); 2487 } 2488 2489 ret->options=s->options; 2490 ret->mode=s->mode; 2491 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2492 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2493 ret->msg_callback = s->msg_callback; 2494 ret->msg_callback_arg = s->msg_callback_arg; 2495 SSL_set_verify(ret,SSL_get_verify_mode(s), 2496 SSL_get_verify_callback(s)); 2497 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2498 ret->generate_session_id = s->generate_session_id; 2499 2500 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2501 2502 ret->debug=s->debug; 2503 2504 /* copy app data, a little dangerous perhaps */ 2505 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2506 goto err; 2507 2508 /* setup rbio, and wbio */ 2509 if (s->rbio != NULL) 2510 { 2511 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2512 goto err; 2513 } 2514 if (s->wbio != NULL) 2515 { 2516 if (s->wbio != s->rbio) 2517 { 2518 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2519 goto err; 2520 } 2521 else 2522 ret->wbio=ret->rbio; 2523 } 2524 ret->rwstate = s->rwstate; 2525 ret->in_handshake = s->in_handshake; 2526 ret->handshake_func = s->handshake_func; 2527 ret->server = s->server; 2528 ret->new_session = s->new_session; 2529 ret->quiet_shutdown = s->quiet_shutdown; 2530 ret->shutdown=s->shutdown; 2531 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2532 ret->rstate=s->rstate; 2533 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2534 ret->hit=s->hit; 2535 2536 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2537 2538 /* dup the cipher_list and cipher_list_by_id stacks */ 2539 if (s->cipher_list != NULL) 2540 { 2541 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2542 goto err; 2543 } 2544 if (s->cipher_list_by_id != NULL) 2545 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2546 == NULL) 2547 goto err; 2548 2549 /* Dup the client_CA list */ 2550 if (s->client_CA != NULL) 2551 { 2552 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2553 ret->client_CA=sk; 2554 for (i=0; i<sk_X509_NAME_num(sk); i++) 2555 { 2556 xn=sk_X509_NAME_value(sk,i); 2557 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2558 { 2559 X509_NAME_free(xn); 2560 goto err; 2561 } 2562 } 2563 } 2564 2565 if (0) 2566 { 2567 err: 2568 if (ret != NULL) SSL_free(ret); 2569 ret=NULL; 2570 } 2571 return(ret); 2572 } 2573 2574 void ssl_clear_cipher_ctx(SSL *s) 2575 { 2576 if (s->enc_read_ctx != NULL) 2577 { 2578 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2579 OPENSSL_free(s->enc_read_ctx); 2580 s->enc_read_ctx=NULL; 2581 } 2582 if (s->enc_write_ctx != NULL) 2583 { 2584 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2585 OPENSSL_free(s->enc_write_ctx); 2586 s->enc_write_ctx=NULL; 2587 } 2588 #ifndef OPENSSL_NO_COMP 2589 if (s->expand != NULL) 2590 { 2591 COMP_CTX_free(s->expand); 2592 s->expand=NULL; 2593 } 2594 if (s->compress != NULL) 2595 { 2596 COMP_CTX_free(s->compress); 2597 s->compress=NULL; 2598 } 2599 #endif 2600 } 2601 2602 /* Fix this function so that it takes an optional type parameter */ 2603 X509 *SSL_get_certificate(const SSL *s) 2604 { 2605 if (s->cert != NULL) 2606 return(s->cert->key->x509); 2607 else 2608 return(NULL); 2609 } 2610 2611 /* Fix this function so that it takes an optional type parameter */ 2612 EVP_PKEY *SSL_get_privatekey(SSL *s) 2613 { 2614 if (s->cert != NULL) 2615 return(s->cert->key->privatekey); 2616 else 2617 return(NULL); 2618 } 2619 2620 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2621 { 2622 if ((s->session != NULL) && (s->session->cipher != NULL)) 2623 return(s->session->cipher); 2624 return(NULL); 2625 } 2626 #ifdef OPENSSL_NO_COMP 2627 const void *SSL_get_current_compression(SSL *s) 2628 { 2629 return NULL; 2630 } 2631 const void *SSL_get_current_expansion(SSL *s) 2632 { 2633 return NULL; 2634 } 2635 #else 2636 2637 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2638 { 2639 if (s->compress != NULL) 2640 return(s->compress->meth); 2641 return(NULL); 2642 } 2643 2644 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2645 { 2646 if (s->expand != NULL) 2647 return(s->expand->meth); 2648 return(NULL); 2649 } 2650 #endif 2651 2652 int ssl_init_wbio_buffer(SSL *s,int push) 2653 { 2654 BIO *bbio; 2655 2656 if (s->bbio == NULL) 2657 { 2658 bbio=BIO_new(BIO_f_buffer()); 2659 if (bbio == NULL) return(0); 2660 s->bbio=bbio; 2661 } 2662 else 2663 { 2664 bbio=s->bbio; 2665 if (s->bbio == s->wbio) 2666 s->wbio=BIO_pop(s->wbio); 2667 } 2668 (void)BIO_reset(bbio); 2669 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2670 if (!BIO_set_read_buffer_size(bbio,1)) 2671 { 2672 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2673 return(0); 2674 } 2675 if (push) 2676 { 2677 if (s->wbio != bbio) 2678 s->wbio=BIO_push(bbio,s->wbio); 2679 } 2680 else 2681 { 2682 if (s->wbio == bbio) 2683 s->wbio=BIO_pop(bbio); 2684 } 2685 return(1); 2686 } 2687 2688 void ssl_free_wbio_buffer(SSL *s) 2689 { 2690 if (s->bbio == NULL) return; 2691 2692 if (s->bbio == s->wbio) 2693 { 2694 /* remove buffering */ 2695 s->wbio=BIO_pop(s->wbio); 2696 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2697 assert(s->wbio != NULL); 2698 #endif 2699 } 2700 BIO_free(s->bbio); 2701 s->bbio=NULL; 2702 } 2703 2704 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2705 { 2706 ctx->quiet_shutdown=mode; 2707 } 2708 2709 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2710 { 2711 return(ctx->quiet_shutdown); 2712 } 2713 2714 void SSL_set_quiet_shutdown(SSL *s,int mode) 2715 { 2716 s->quiet_shutdown=mode; 2717 } 2718 2719 int SSL_get_quiet_shutdown(const SSL *s) 2720 { 2721 return(s->quiet_shutdown); 2722 } 2723 2724 void SSL_set_shutdown(SSL *s,int mode) 2725 { 2726 s->shutdown=mode; 2727 } 2728 2729 int SSL_get_shutdown(const SSL *s) 2730 { 2731 return(s->shutdown); 2732 } 2733 2734 int SSL_version(const SSL *s) 2735 { 2736 return(s->version); 2737 } 2738 2739 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2740 { 2741 return(ssl->ctx); 2742 } 2743 2744 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2745 { 2746 if (ssl->ctx == ctx) 2747 return ssl->ctx; 2748 #ifndef OPENSSL_NO_TLSEXT 2749 if (ctx == NULL) 2750 ctx = ssl->initial_ctx; 2751 #endif 2752 if (ssl->cert != NULL) 2753 ssl_cert_free(ssl->cert); 2754 ssl->cert = ssl_cert_dup(ctx->cert); 2755 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 2756 if (ssl->ctx != NULL) 2757 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2758 ssl->ctx = ctx; 2759 return(ssl->ctx); 2760 } 2761 2762 #ifndef OPENSSL_NO_STDIO 2763 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2764 { 2765 return(X509_STORE_set_default_paths(ctx->cert_store)); 2766 } 2767 2768 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2769 const char *CApath) 2770 { 2771 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2772 } 2773 #endif 2774 2775 void SSL_set_info_callback(SSL *ssl, 2776 void (*cb)(const SSL *ssl,int type,int val)) 2777 { 2778 ssl->info_callback=cb; 2779 } 2780 2781 /* One compiler (Diab DCC) doesn't like argument names in returned 2782 function pointer. */ 2783 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2784 { 2785 return ssl->info_callback; 2786 } 2787 2788 int SSL_state(const SSL *ssl) 2789 { 2790 return(ssl->state); 2791 } 2792 2793 void SSL_set_verify_result(SSL *ssl,long arg) 2794 { 2795 ssl->verify_result=arg; 2796 } 2797 2798 long SSL_get_verify_result(const SSL *ssl) 2799 { 2800 return(ssl->verify_result); 2801 } 2802 2803 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2804 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2805 { 2806 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2807 new_func, dup_func, free_func); 2808 } 2809 2810 int SSL_set_ex_data(SSL *s,int idx,void *arg) 2811 { 2812 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2813 } 2814 2815 void *SSL_get_ex_data(const SSL *s,int idx) 2816 { 2817 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2818 } 2819 2820 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2821 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2822 { 2823 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2824 new_func, dup_func, free_func); 2825 } 2826 2827 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2828 { 2829 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2830 } 2831 2832 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 2833 { 2834 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2835 } 2836 2837 int ssl_ok(SSL *s) 2838 { 2839 return(1); 2840 } 2841 2842 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2843 { 2844 return(ctx->cert_store); 2845 } 2846 2847 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2848 { 2849 if (ctx->cert_store != NULL) 2850 X509_STORE_free(ctx->cert_store); 2851 ctx->cert_store=store; 2852 } 2853 2854 int SSL_want(const SSL *s) 2855 { 2856 return(s->rwstate); 2857 } 2858 2859 /*! 2860 * \brief Set the callback for generating temporary RSA keys. 2861 * \param ctx the SSL context. 2862 * \param cb the callback 2863 */ 2864 2865 #ifndef OPENSSL_NO_RSA 2866 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2867 int is_export, 2868 int keylength)) 2869 { 2870 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2871 } 2872 2873 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2874 int is_export, 2875 int keylength)) 2876 { 2877 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2878 } 2879 #endif 2880 2881 #ifdef DOXYGEN 2882 /*! 2883 * \brief The RSA temporary key callback function. 2884 * \param ssl the SSL session. 2885 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2886 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2887 * of the required key in bits. 2888 * \return the temporary RSA key. 2889 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2890 */ 2891 2892 RSA *cb(SSL *ssl,int is_export,int keylength) 2893 {} 2894 #endif 2895 2896 /*! 2897 * \brief Set the callback for generating temporary DH keys. 2898 * \param ctx the SSL context. 2899 * \param dh the callback 2900 */ 2901 2902 #ifndef OPENSSL_NO_DH 2903 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2904 int keylength)) 2905 { 2906 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2907 } 2908 2909 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2910 int keylength)) 2911 { 2912 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2913 } 2914 #endif 2915 2916 #ifndef OPENSSL_NO_ECDH 2917 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2918 int keylength)) 2919 { 2920 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2921 } 2922 2923 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2924 int keylength)) 2925 { 2926 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2927 } 2928 #endif 2929 2930 #ifndef OPENSSL_NO_PSK 2931 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 2932 { 2933 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 2934 { 2935 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 2936 return 0; 2937 } 2938 if (ctx->psk_identity_hint != NULL) 2939 OPENSSL_free(ctx->psk_identity_hint); 2940 if (identity_hint != NULL) 2941 { 2942 ctx->psk_identity_hint = BUF_strdup(identity_hint); 2943 if (ctx->psk_identity_hint == NULL) 2944 return 0; 2945 } 2946 else 2947 ctx->psk_identity_hint = NULL; 2948 return 1; 2949 } 2950 2951 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 2952 { 2953 if (s == NULL) 2954 return 0; 2955 2956 if (s->session == NULL) 2957 return 1; /* session not created yet, ignored */ 2958 2959 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 2960 { 2961 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 2962 return 0; 2963 } 2964 if (s->session->psk_identity_hint != NULL) 2965 OPENSSL_free(s->session->psk_identity_hint); 2966 if (identity_hint != NULL) 2967 { 2968 s->session->psk_identity_hint = BUF_strdup(identity_hint); 2969 if (s->session->psk_identity_hint == NULL) 2970 return 0; 2971 } 2972 else 2973 s->session->psk_identity_hint = NULL; 2974 return 1; 2975 } 2976 2977 const char *SSL_get_psk_identity_hint(const SSL *s) 2978 { 2979 if (s == NULL || s->session == NULL) 2980 return NULL; 2981 return(s->session->psk_identity_hint); 2982 } 2983 2984 const char *SSL_get_psk_identity(const SSL *s) 2985 { 2986 if (s == NULL || s->session == NULL) 2987 return NULL; 2988 return(s->session->psk_identity); 2989 } 2990 2991 void SSL_set_psk_client_callback(SSL *s, 2992 unsigned int (*cb)(SSL *ssl, const char *hint, 2993 char *identity, unsigned int max_identity_len, unsigned char *psk, 2994 unsigned int max_psk_len)) 2995 { 2996 s->psk_client_callback = cb; 2997 } 2998 2999 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3000 unsigned int (*cb)(SSL *ssl, const char *hint, 3001 char *identity, unsigned int max_identity_len, unsigned char *psk, 3002 unsigned int max_psk_len)) 3003 { 3004 ctx->psk_client_callback = cb; 3005 } 3006 3007 void SSL_set_psk_server_callback(SSL *s, 3008 unsigned int (*cb)(SSL *ssl, const char *identity, 3009 unsigned char *psk, unsigned int max_psk_len)) 3010 { 3011 s->psk_server_callback = cb; 3012 } 3013 3014 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3015 unsigned int (*cb)(SSL *ssl, const char *identity, 3016 unsigned char *psk, unsigned int max_psk_len)) 3017 { 3018 ctx->psk_server_callback = cb; 3019 } 3020 #endif 3021 3022 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)) 3023 { 3024 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3025 } 3026 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)) 3027 { 3028 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3029 } 3030 3031 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3032 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3033 * any. If EVP_MD pointer is passed, initializes ctx with this md 3034 * Returns newly allocated ctx; 3035 */ 3036 3037 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3038 { 3039 ssl_clear_hash_ctx(hash); 3040 *hash = EVP_MD_CTX_create(); 3041 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3042 return *hash; 3043 } 3044 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3045 { 3046 3047 if (*hash) EVP_MD_CTX_destroy(*hash); 3048 *hash=NULL; 3049 } 3050 3051 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3052 #include "../crypto/bio/bss_file.c" 3053 #endif 3054 3055 IMPLEMENT_STACK_OF(SSL_CIPHER) 3056 IMPLEMENT_STACK_OF(SSL_COMP) 3057 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3058 ssl_cipher_id); 3059 3060