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->renegotiate) return(1); 206 #else 207 if (s->renegotiate) 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->renegotiate == 0) 1012 s->renegotiate=1; 1013 1014 s->new_session=1; 1015 1016 return(s->method->ssl_renegotiate(s)); 1017 } 1018 1019 int SSL_renegotiate_abbreviated(SSL *s) 1020 { 1021 if (s->renegotiate == 0) 1022 s->renegotiate=1; 1023 1024 s->new_session=0; 1025 1026 return(s->method->ssl_renegotiate(s)); 1027 } 1028 1029 int SSL_renegotiate_pending(SSL *s) 1030 { 1031 /* becomes true when negotiation is requested; 1032 * false again once a handshake has finished */ 1033 return (s->renegotiate != 0); 1034 } 1035 1036 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 1037 { 1038 long l; 1039 1040 switch (cmd) 1041 { 1042 case SSL_CTRL_GET_READ_AHEAD: 1043 return(s->read_ahead); 1044 case SSL_CTRL_SET_READ_AHEAD: 1045 l=s->read_ahead; 1046 s->read_ahead=larg; 1047 return(l); 1048 1049 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1050 s->msg_callback_arg = parg; 1051 return 1; 1052 1053 case SSL_CTRL_OPTIONS: 1054 return(s->options|=larg); 1055 case SSL_CTRL_CLEAR_OPTIONS: 1056 return(s->options&=~larg); 1057 case SSL_CTRL_MODE: 1058 return(s->mode|=larg); 1059 case SSL_CTRL_CLEAR_MODE: 1060 return(s->mode &=~larg); 1061 case SSL_CTRL_GET_MAX_CERT_LIST: 1062 return(s->max_cert_list); 1063 case SSL_CTRL_SET_MAX_CERT_LIST: 1064 l=s->max_cert_list; 1065 s->max_cert_list=larg; 1066 return(l); 1067 case SSL_CTRL_SET_MTU: 1068 if (SSL_version(s) == DTLS1_VERSION || 1069 SSL_version(s) == DTLS1_BAD_VER) 1070 { 1071 s->d1->mtu = larg; 1072 return larg; 1073 } 1074 return 0; 1075 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1076 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1077 return 0; 1078 s->max_send_fragment = larg; 1079 return 1; 1080 case SSL_CTRL_GET_RI_SUPPORT: 1081 if (s->s3) 1082 return s->s3->send_connection_binding; 1083 else return 0; 1084 default: 1085 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1086 } 1087 } 1088 1089 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1090 { 1091 switch(cmd) 1092 { 1093 case SSL_CTRL_SET_MSG_CALLBACK: 1094 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1095 return 1; 1096 1097 default: 1098 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1099 } 1100 } 1101 1102 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx) 1103 { 1104 return ctx->sessions; 1105 } 1106 1107 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1108 { 1109 long l; 1110 1111 switch (cmd) 1112 { 1113 case SSL_CTRL_GET_READ_AHEAD: 1114 return(ctx->read_ahead); 1115 case SSL_CTRL_SET_READ_AHEAD: 1116 l=ctx->read_ahead; 1117 ctx->read_ahead=larg; 1118 return(l); 1119 1120 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1121 ctx->msg_callback_arg = parg; 1122 return 1; 1123 1124 case SSL_CTRL_GET_MAX_CERT_LIST: 1125 return(ctx->max_cert_list); 1126 case SSL_CTRL_SET_MAX_CERT_LIST: 1127 l=ctx->max_cert_list; 1128 ctx->max_cert_list=larg; 1129 return(l); 1130 1131 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1132 l=ctx->session_cache_size; 1133 ctx->session_cache_size=larg; 1134 return(l); 1135 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1136 return(ctx->session_cache_size); 1137 case SSL_CTRL_SET_SESS_CACHE_MODE: 1138 l=ctx->session_cache_mode; 1139 ctx->session_cache_mode=larg; 1140 return(l); 1141 case SSL_CTRL_GET_SESS_CACHE_MODE: 1142 return(ctx->session_cache_mode); 1143 1144 case SSL_CTRL_SESS_NUMBER: 1145 return(lh_SSL_SESSION_num_items(ctx->sessions)); 1146 case SSL_CTRL_SESS_CONNECT: 1147 return(ctx->stats.sess_connect); 1148 case SSL_CTRL_SESS_CONNECT_GOOD: 1149 return(ctx->stats.sess_connect_good); 1150 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1151 return(ctx->stats.sess_connect_renegotiate); 1152 case SSL_CTRL_SESS_ACCEPT: 1153 return(ctx->stats.sess_accept); 1154 case SSL_CTRL_SESS_ACCEPT_GOOD: 1155 return(ctx->stats.sess_accept_good); 1156 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1157 return(ctx->stats.sess_accept_renegotiate); 1158 case SSL_CTRL_SESS_HIT: 1159 return(ctx->stats.sess_hit); 1160 case SSL_CTRL_SESS_CB_HIT: 1161 return(ctx->stats.sess_cb_hit); 1162 case SSL_CTRL_SESS_MISSES: 1163 return(ctx->stats.sess_miss); 1164 case SSL_CTRL_SESS_TIMEOUTS: 1165 return(ctx->stats.sess_timeout); 1166 case SSL_CTRL_SESS_CACHE_FULL: 1167 return(ctx->stats.sess_cache_full); 1168 case SSL_CTRL_OPTIONS: 1169 return(ctx->options|=larg); 1170 case SSL_CTRL_CLEAR_OPTIONS: 1171 return(ctx->options&=~larg); 1172 case SSL_CTRL_MODE: 1173 return(ctx->mode|=larg); 1174 case SSL_CTRL_CLEAR_MODE: 1175 return(ctx->mode&=~larg); 1176 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1177 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1178 return 0; 1179 ctx->max_send_fragment = larg; 1180 return 1; 1181 default: 1182 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1183 } 1184 } 1185 1186 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1187 { 1188 switch(cmd) 1189 { 1190 case SSL_CTRL_SET_MSG_CALLBACK: 1191 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1192 return 1; 1193 1194 default: 1195 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1196 } 1197 } 1198 1199 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1200 { 1201 long l; 1202 1203 l=a->id-b->id; 1204 if (l == 0L) 1205 return(0); 1206 else 1207 return((l > 0)?1:-1); 1208 } 1209 1210 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1211 const SSL_CIPHER * const *bp) 1212 { 1213 long l; 1214 1215 l=(*ap)->id-(*bp)->id; 1216 if (l == 0L) 1217 return(0); 1218 else 1219 return((l > 0)?1:-1); 1220 } 1221 1222 /** return a STACK of the ciphers available for the SSL and in order of 1223 * preference */ 1224 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1225 { 1226 if (s != NULL) 1227 { 1228 if (s->cipher_list != NULL) 1229 { 1230 return(s->cipher_list); 1231 } 1232 else if ((s->ctx != NULL) && 1233 (s->ctx->cipher_list != NULL)) 1234 { 1235 return(s->ctx->cipher_list); 1236 } 1237 } 1238 return(NULL); 1239 } 1240 1241 /** return a STACK of the ciphers available for the SSL and in order of 1242 * algorithm id */ 1243 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1244 { 1245 if (s != NULL) 1246 { 1247 if (s->cipher_list_by_id != NULL) 1248 { 1249 return(s->cipher_list_by_id); 1250 } 1251 else if ((s->ctx != NULL) && 1252 (s->ctx->cipher_list_by_id != NULL)) 1253 { 1254 return(s->ctx->cipher_list_by_id); 1255 } 1256 } 1257 return(NULL); 1258 } 1259 1260 /** The old interface to get the same thing as SSL_get_ciphers() */ 1261 const char *SSL_get_cipher_list(const SSL *s,int n) 1262 { 1263 SSL_CIPHER *c; 1264 STACK_OF(SSL_CIPHER) *sk; 1265 1266 if (s == NULL) return(NULL); 1267 sk=SSL_get_ciphers(s); 1268 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1269 return(NULL); 1270 c=sk_SSL_CIPHER_value(sk,n); 1271 if (c == NULL) return(NULL); 1272 return(c->name); 1273 } 1274 1275 /** specify the ciphers to be used by default by the SSL_CTX */ 1276 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1277 { 1278 STACK_OF(SSL_CIPHER) *sk; 1279 1280 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1281 &ctx->cipher_list_by_id,str); 1282 /* ssl_create_cipher_list may return an empty stack if it 1283 * was unable to find a cipher matching the given rule string 1284 * (for example if the rule string specifies a cipher which 1285 * has been disabled). This is not an error as far as 1286 * ssl_create_cipher_list is concerned, and hence 1287 * ctx->cipher_list and ctx->cipher_list_by_id has been 1288 * updated. */ 1289 if (sk == NULL) 1290 return 0; 1291 else if (sk_SSL_CIPHER_num(sk) == 0) 1292 { 1293 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1294 return 0; 1295 } 1296 return 1; 1297 } 1298 1299 /** specify the ciphers to be used by the SSL */ 1300 int SSL_set_cipher_list(SSL *s,const char *str) 1301 { 1302 STACK_OF(SSL_CIPHER) *sk; 1303 1304 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1305 &s->cipher_list_by_id,str); 1306 /* see comment in SSL_CTX_set_cipher_list */ 1307 if (sk == NULL) 1308 return 0; 1309 else if (sk_SSL_CIPHER_num(sk) == 0) 1310 { 1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1312 return 0; 1313 } 1314 return 1; 1315 } 1316 1317 /* works well for SSLv2, not so good for SSLv3 */ 1318 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1319 { 1320 char *p; 1321 STACK_OF(SSL_CIPHER) *sk; 1322 SSL_CIPHER *c; 1323 int i; 1324 1325 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1326 (len < 2)) 1327 return(NULL); 1328 1329 p=buf; 1330 sk=s->session->ciphers; 1331 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1332 { 1333 int n; 1334 1335 c=sk_SSL_CIPHER_value(sk,i); 1336 n=strlen(c->name); 1337 if (n+1 > len) 1338 { 1339 if (p != buf) 1340 --p; 1341 *p='\0'; 1342 return buf; 1343 } 1344 strcpy(p,c->name); 1345 p+=n; 1346 *(p++)=':'; 1347 len-=n+1; 1348 } 1349 p[-1]='\0'; 1350 return(buf); 1351 } 1352 1353 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1354 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1355 { 1356 int i,j=0; 1357 SSL_CIPHER *c; 1358 unsigned char *q; 1359 #ifndef OPENSSL_NO_KRB5 1360 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1361 #endif /* OPENSSL_NO_KRB5 */ 1362 1363 if (sk == NULL) return(0); 1364 q=p; 1365 1366 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1367 { 1368 c=sk_SSL_CIPHER_value(sk,i); 1369 #ifndef OPENSSL_NO_KRB5 1370 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) && 1371 nokrb5) 1372 continue; 1373 #endif /* OPENSSL_NO_KRB5 */ 1374 #ifndef OPENSSL_NO_PSK 1375 /* with PSK there must be client callback set */ 1376 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) && 1377 s->psk_client_callback == NULL) 1378 continue; 1379 #endif /* OPENSSL_NO_PSK */ 1380 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1381 p+=j; 1382 } 1383 /* If p == q, no ciphers and caller indicates an error. Otherwise 1384 * add SCSV if not renegotiating. 1385 */ 1386 if (p != q && !s->renegotiate) 1387 { 1388 static SSL_CIPHER scsv = 1389 { 1390 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 1391 }; 1392 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p); 1393 p+=j; 1394 #ifdef OPENSSL_RI_DEBUG 1395 fprintf(stderr, "SCSV sent by client\n"); 1396 #endif 1397 } 1398 1399 return(p-q); 1400 } 1401 1402 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1403 STACK_OF(SSL_CIPHER) **skp) 1404 { 1405 const SSL_CIPHER *c; 1406 STACK_OF(SSL_CIPHER) *sk; 1407 int i,n; 1408 if (s->s3) 1409 s->s3->send_connection_binding = 0; 1410 1411 n=ssl_put_cipher_by_char(s,NULL,NULL); 1412 if ((num%n) != 0) 1413 { 1414 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1415 return(NULL); 1416 } 1417 if ((skp == NULL) || (*skp == NULL)) 1418 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1419 else 1420 { 1421 sk= *skp; 1422 sk_SSL_CIPHER_zero(sk); 1423 } 1424 1425 for (i=0; i<num; i+=n) 1426 { 1427 /* Check for SCSV */ 1428 if (s->s3 && (n != 3 || !p[0]) && 1429 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1430 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1431 { 1432 /* SCSV fatal if renegotiating */ 1433 if (s->renegotiate) 1434 { 1435 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1436 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1437 goto err; 1438 } 1439 s->s3->send_connection_binding = 1; 1440 p += n; 1441 #ifdef OPENSSL_RI_DEBUG 1442 fprintf(stderr, "SCSV received by server\n"); 1443 #endif 1444 continue; 1445 } 1446 1447 c=ssl_get_cipher_by_char(s,p); 1448 p+=n; 1449 if (c != NULL) 1450 { 1451 if (!sk_SSL_CIPHER_push(sk,c)) 1452 { 1453 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1454 goto err; 1455 } 1456 } 1457 } 1458 1459 if (skp != NULL) 1460 *skp=sk; 1461 return(sk); 1462 err: 1463 if ((skp == NULL) || (*skp == NULL)) 1464 sk_SSL_CIPHER_free(sk); 1465 return(NULL); 1466 } 1467 1468 1469 #ifndef OPENSSL_NO_TLSEXT 1470 /** return a servername extension value if provided in Client Hello, or NULL. 1471 * So far, only host_name types are defined (RFC 3546). 1472 */ 1473 1474 const char *SSL_get_servername(const SSL *s, const int type) 1475 { 1476 if (type != TLSEXT_NAMETYPE_host_name) 1477 return NULL; 1478 1479 return s->session && !s->tlsext_hostname ? 1480 s->session->tlsext_hostname : 1481 s->tlsext_hostname; 1482 } 1483 1484 int SSL_get_servername_type(const SSL *s) 1485 { 1486 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1487 return TLSEXT_NAMETYPE_host_name; 1488 return -1; 1489 } 1490 #endif 1491 1492 static unsigned long ssl_session_hash(const SSL_SESSION *a) 1493 { 1494 unsigned long l; 1495 1496 l=(unsigned long) 1497 ((unsigned int) a->session_id[0] )| 1498 ((unsigned int) a->session_id[1]<< 8L)| 1499 ((unsigned long)a->session_id[2]<<16L)| 1500 ((unsigned long)a->session_id[3]<<24L); 1501 return(l); 1502 } 1503 1504 /* NB: If this function (or indeed the hash function which uses a sort of 1505 * coarser function than this one) is changed, ensure 1506 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1507 * able to construct an SSL_SESSION that will collide with any existing session 1508 * with a matching session ID. */ 1509 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1510 { 1511 if (a->ssl_version != b->ssl_version) 1512 return(1); 1513 if (a->session_id_length != b->session_id_length) 1514 return(1); 1515 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1516 } 1517 1518 /* These wrapper functions should remain rather than redeclaring 1519 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1520 * variable. The reason is that the functions aren't static, they're exposed via 1521 * ssl.h. */ 1522 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION) 1523 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION) 1524 1525 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth) 1526 { 1527 SSL_CTX *ret=NULL; 1528 1529 if (meth == NULL) 1530 { 1531 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1532 return(NULL); 1533 } 1534 1535 #ifdef OPENSSL_FIPS 1536 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1537 { 1538 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1539 return NULL; 1540 } 1541 #endif 1542 1543 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1544 { 1545 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1546 goto err; 1547 } 1548 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1549 if (ret == NULL) 1550 goto err; 1551 1552 memset(ret,0,sizeof(SSL_CTX)); 1553 1554 ret->method=meth; 1555 1556 ret->cert_store=NULL; 1557 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1558 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1559 ret->session_cache_head=NULL; 1560 ret->session_cache_tail=NULL; 1561 1562 /* We take the system default */ 1563 ret->session_timeout=meth->get_timeout(); 1564 1565 ret->new_session_cb=0; 1566 ret->remove_session_cb=0; 1567 ret->get_session_cb=0; 1568 ret->generate_session_id=0; 1569 1570 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1571 1572 ret->references=1; 1573 ret->quiet_shutdown=0; 1574 1575 /* ret->cipher=NULL;*/ 1576 /* ret->s2->challenge=NULL; 1577 ret->master_key=NULL; 1578 ret->key_arg=NULL; 1579 ret->s2->conn_id=NULL; */ 1580 1581 ret->info_callback=NULL; 1582 1583 ret->app_verify_callback=0; 1584 ret->app_verify_arg=NULL; 1585 1586 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1587 ret->read_ahead=0; 1588 ret->msg_callback=0; 1589 ret->msg_callback_arg=NULL; 1590 ret->verify_mode=SSL_VERIFY_NONE; 1591 #if 0 1592 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1593 #endif 1594 ret->sid_ctx_length=0; 1595 ret->default_verify_callback=NULL; 1596 if ((ret->cert=ssl_cert_new()) == NULL) 1597 goto err; 1598 1599 ret->default_passwd_callback=0; 1600 ret->default_passwd_callback_userdata=NULL; 1601 ret->client_cert_cb=0; 1602 ret->app_gen_cookie_cb=0; 1603 ret->app_verify_cookie_cb=0; 1604 1605 ret->sessions=lh_SSL_SESSION_new(); 1606 if (ret->sessions == NULL) goto err; 1607 ret->cert_store=X509_STORE_new(); 1608 if (ret->cert_store == NULL) goto err; 1609 1610 ssl_create_cipher_list(ret->method, 1611 &ret->cipher_list,&ret->cipher_list_by_id, 1612 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST); 1613 if (ret->cipher_list == NULL 1614 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1615 { 1616 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1617 goto err2; 1618 } 1619 1620 ret->param = X509_VERIFY_PARAM_new(); 1621 if (!ret->param) 1622 goto err; 1623 1624 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1625 { 1626 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1627 goto err2; 1628 } 1629 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1630 { 1631 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1632 goto err2; 1633 } 1634 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1635 { 1636 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1637 goto err2; 1638 } 1639 1640 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1641 goto err; 1642 1643 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1644 1645 ret->extra_certs=NULL; 1646 ret->comp_methods=SSL_COMP_get_compression_methods(); 1647 1648 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1649 1650 #ifndef OPENSSL_NO_TLSEXT 1651 ret->tlsext_servername_callback = 0; 1652 ret->tlsext_servername_arg = NULL; 1653 /* Setup RFC4507 ticket keys */ 1654 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1655 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1656 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1657 ret->options |= SSL_OP_NO_TICKET; 1658 1659 ret->tlsext_status_cb = 0; 1660 ret->tlsext_status_arg = NULL; 1661 1662 #endif 1663 #ifndef OPENSSL_NO_PSK 1664 ret->psk_identity_hint=NULL; 1665 ret->psk_client_callback=NULL; 1666 ret->psk_server_callback=NULL; 1667 #endif 1668 #ifndef OPENSSL_NO_SRP 1669 SSL_CTX_SRP_CTX_init(ret); 1670 #endif 1671 #ifndef OPENSSL_NO_BUF_FREELISTS 1672 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT; 1673 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1674 if (!ret->rbuf_freelist) 1675 goto err; 1676 ret->rbuf_freelist->chunklen = 0; 1677 ret->rbuf_freelist->len = 0; 1678 ret->rbuf_freelist->head = NULL; 1679 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST)); 1680 if (!ret->wbuf_freelist) 1681 { 1682 OPENSSL_free(ret->rbuf_freelist); 1683 goto err; 1684 } 1685 ret->wbuf_freelist->chunklen = 0; 1686 ret->wbuf_freelist->len = 0; 1687 ret->wbuf_freelist->head = NULL; 1688 #endif 1689 #ifndef OPENSSL_NO_ENGINE 1690 ret->client_cert_engine = NULL; 1691 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1692 #define eng_strx(x) #x 1693 #define eng_str(x) eng_strx(x) 1694 /* Use specific client engine automatically... ignore errors */ 1695 { 1696 ENGINE *eng; 1697 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1698 if (!eng) 1699 { 1700 ERR_clear_error(); 1701 ENGINE_load_builtin_engines(); 1702 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1703 } 1704 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1705 ERR_clear_error(); 1706 } 1707 #endif 1708 #endif 1709 /* Default is to connect to non-RI servers. When RI is more widely 1710 * deployed might change this. 1711 */ 1712 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1713 /* Disable TLS v1.2 by default for now */ 1714 ret->options |= SSL_OP_NO_TLSv1_2; 1715 1716 return(ret); 1717 err: 1718 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1719 err2: 1720 if (ret != NULL) SSL_CTX_free(ret); 1721 return(NULL); 1722 } 1723 1724 #if 0 1725 static void SSL_COMP_free(SSL_COMP *comp) 1726 { OPENSSL_free(comp); } 1727 #endif 1728 1729 #ifndef OPENSSL_NO_BUF_FREELISTS 1730 static void 1731 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list) 1732 { 1733 SSL3_BUF_FREELIST_ENTRY *ent, *next; 1734 for (ent = list->head; ent; ent = next) 1735 { 1736 next = ent->next; 1737 OPENSSL_free(ent); 1738 } 1739 OPENSSL_free(list); 1740 } 1741 #endif 1742 1743 void SSL_CTX_free(SSL_CTX *a) 1744 { 1745 int i; 1746 1747 if (a == NULL) return; 1748 1749 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1750 #ifdef REF_PRINT 1751 REF_PRINT("SSL_CTX",a); 1752 #endif 1753 if (i > 0) return; 1754 #ifdef REF_CHECK 1755 if (i < 0) 1756 { 1757 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1758 abort(); /* ok */ 1759 } 1760 #endif 1761 1762 if (a->param) 1763 X509_VERIFY_PARAM_free(a->param); 1764 1765 /* 1766 * Free internal session cache. However: the remove_cb() may reference 1767 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1768 * after the sessions were flushed. 1769 * As the ex_data handling routines might also touch the session cache, 1770 * the most secure solution seems to be: empty (flush) the cache, then 1771 * free ex_data, then finally free the cache. 1772 * (See ticket [openssl.org #212].) 1773 */ 1774 if (a->sessions != NULL) 1775 SSL_CTX_flush_sessions(a,0); 1776 1777 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1778 1779 if (a->sessions != NULL) 1780 lh_SSL_SESSION_free(a->sessions); 1781 1782 if (a->cert_store != NULL) 1783 X509_STORE_free(a->cert_store); 1784 if (a->cipher_list != NULL) 1785 sk_SSL_CIPHER_free(a->cipher_list); 1786 if (a->cipher_list_by_id != NULL) 1787 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1788 if (a->cert != NULL) 1789 ssl_cert_free(a->cert); 1790 if (a->client_CA != NULL) 1791 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1792 if (a->extra_certs != NULL) 1793 sk_X509_pop_free(a->extra_certs,X509_free); 1794 #if 0 /* This should never be done, since it removes a global database */ 1795 if (a->comp_methods != NULL) 1796 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1797 #else 1798 a->comp_methods = NULL; 1799 #endif 1800 1801 #ifndef OPENSSL_NO_PSK 1802 if (a->psk_identity_hint) 1803 OPENSSL_free(a->psk_identity_hint); 1804 #endif 1805 #ifndef OPENSSL_NO_SRP 1806 SSL_CTX_SRP_CTX_free(a); 1807 #endif 1808 #ifndef OPENSSL_NO_ENGINE 1809 if (a->client_cert_engine) 1810 ENGINE_finish(a->client_cert_engine); 1811 #endif 1812 1813 #ifndef OPENSSL_NO_BUF_FREELISTS 1814 if (a->wbuf_freelist) 1815 ssl_buf_freelist_free(a->wbuf_freelist); 1816 if (a->rbuf_freelist) 1817 ssl_buf_freelist_free(a->rbuf_freelist); 1818 #endif 1819 1820 OPENSSL_free(a); 1821 } 1822 1823 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1824 { 1825 ctx->default_passwd_callback=cb; 1826 } 1827 1828 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1829 { 1830 ctx->default_passwd_callback_userdata=u; 1831 } 1832 1833 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1834 { 1835 ctx->app_verify_callback=cb; 1836 ctx->app_verify_arg=arg; 1837 } 1838 1839 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1840 { 1841 ctx->verify_mode=mode; 1842 ctx->default_verify_callback=cb; 1843 } 1844 1845 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1846 { 1847 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1848 } 1849 1850 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 1851 { 1852 CERT_PKEY *cpk; 1853 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1854 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1855 int rsa_tmp_export,dh_tmp_export,kl; 1856 unsigned long mask_k,mask_a,emask_k,emask_a; 1857 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1858 #ifndef OPENSSL_NO_ECDH 1859 int have_ecdh_tmp; 1860 #endif 1861 X509 *x = NULL; 1862 EVP_PKEY *ecc_pkey = NULL; 1863 int signature_nid = 0; 1864 1865 if (c == NULL) return; 1866 1867 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1868 1869 #ifndef OPENSSL_NO_RSA 1870 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1871 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1872 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1873 #else 1874 rsa_tmp=rsa_tmp_export=0; 1875 #endif 1876 #ifndef OPENSSL_NO_DH 1877 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1878 dh_tmp_export=(c->dh_tmp_cb != NULL || 1879 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1880 #else 1881 dh_tmp=dh_tmp_export=0; 1882 #endif 1883 1884 #ifndef OPENSSL_NO_ECDH 1885 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1886 #endif 1887 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1888 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1889 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1890 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1891 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1892 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1893 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1894 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1895 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1896 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1897 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1898 /* FIX THIS EAY EAY EAY */ 1899 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1900 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1901 cpk= &(c->pkeys[SSL_PKEY_ECC]); 1902 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 1903 mask_k=0; 1904 mask_a=0; 1905 emask_k=0; 1906 emask_a=0; 1907 1908 1909 1910 #ifdef CIPHER_DEBUG 1911 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1912 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp, 1913 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1914 #endif 1915 1916 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 1917 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1918 mask_k |= SSL_kGOST; 1919 mask_a |= SSL_aGOST01; 1920 } 1921 cpk = &(c->pkeys[SSL_PKEY_GOST94]); 1922 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 1923 mask_k |= SSL_kGOST; 1924 mask_a |= SSL_aGOST94; 1925 } 1926 1927 if (rsa_enc || (rsa_tmp && rsa_sign)) 1928 mask_k|=SSL_kRSA; 1929 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1930 emask_k|=SSL_kRSA; 1931 1932 #if 0 1933 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1934 if ( (dh_tmp || dh_rsa || dh_dsa) && 1935 (rsa_enc || rsa_sign || dsa_sign)) 1936 mask_k|=SSL_kEDH; 1937 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1938 (rsa_enc || rsa_sign || dsa_sign)) 1939 emask_k|=SSL_kEDH; 1940 #endif 1941 1942 if (dh_tmp_export) 1943 emask_k|=SSL_kEDH; 1944 1945 if (dh_tmp) 1946 mask_k|=SSL_kEDH; 1947 1948 if (dh_rsa) mask_k|=SSL_kDHr; 1949 if (dh_rsa_export) emask_k|=SSL_kDHr; 1950 1951 if (dh_dsa) mask_k|=SSL_kDHd; 1952 if (dh_dsa_export) emask_k|=SSL_kDHd; 1953 1954 if (rsa_enc || rsa_sign) 1955 { 1956 mask_a|=SSL_aRSA; 1957 emask_a|=SSL_aRSA; 1958 } 1959 1960 if (dsa_sign) 1961 { 1962 mask_a|=SSL_aDSS; 1963 emask_a|=SSL_aDSS; 1964 } 1965 1966 mask_a|=SSL_aNULL; 1967 emask_a|=SSL_aNULL; 1968 1969 #ifndef OPENSSL_NO_KRB5 1970 mask_k|=SSL_kKRB5; 1971 mask_a|=SSL_aKRB5; 1972 emask_k|=SSL_kKRB5; 1973 emask_a|=SSL_aKRB5; 1974 #endif 1975 1976 /* An ECC certificate may be usable for ECDH and/or 1977 * ECDSA cipher suites depending on the key usage extension. 1978 */ 1979 if (have_ecc_cert) 1980 { 1981 /* This call populates extension flags (ex_flags) */ 1982 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1983 X509_check_purpose(x, -1, 0); 1984 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1985 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 1986 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1987 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 1988 ecc_pkey = X509_get_pubkey(x); 1989 ecc_pkey_size = (ecc_pkey != NULL) ? 1990 EVP_PKEY_bits(ecc_pkey) : 0; 1991 EVP_PKEY_free(ecc_pkey); 1992 if ((x->sig_alg) && (x->sig_alg->algorithm)) 1993 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 1994 #ifndef OPENSSL_NO_ECDH 1995 if (ecdh_ok) 1996 { 1997 const char *sig = OBJ_nid2ln(signature_nid); 1998 if (sig == NULL) 1999 { 2000 ERR_clear_error(); 2001 sig = "unknown"; 2002 } 2003 2004 if (strstr(sig, "WithRSA")) 2005 { 2006 mask_k|=SSL_kECDHr; 2007 mask_a|=SSL_aECDH; 2008 if (ecc_pkey_size <= 163) 2009 { 2010 emask_k|=SSL_kECDHr; 2011 emask_a|=SSL_aECDH; 2012 } 2013 } 2014 2015 if (signature_nid == NID_ecdsa_with_SHA1) 2016 { 2017 mask_k|=SSL_kECDHe; 2018 mask_a|=SSL_aECDH; 2019 if (ecc_pkey_size <= 163) 2020 { 2021 emask_k|=SSL_kECDHe; 2022 emask_a|=SSL_aECDH; 2023 } 2024 } 2025 } 2026 #endif 2027 #ifndef OPENSSL_NO_ECDSA 2028 if (ecdsa_ok) 2029 { 2030 mask_a|=SSL_aECDSA; 2031 emask_a|=SSL_aECDSA; 2032 } 2033 #endif 2034 } 2035 2036 #ifndef OPENSSL_NO_ECDH 2037 if (have_ecdh_tmp) 2038 { 2039 mask_k|=SSL_kEECDH; 2040 emask_k|=SSL_kEECDH; 2041 } 2042 #endif 2043 2044 #ifndef OPENSSL_NO_PSK 2045 mask_k |= SSL_kPSK; 2046 mask_a |= SSL_aPSK; 2047 emask_k |= SSL_kPSK; 2048 emask_a |= SSL_aPSK; 2049 #endif 2050 2051 c->mask_k=mask_k; 2052 c->mask_a=mask_a; 2053 c->export_mask_k=emask_k; 2054 c->export_mask_a=emask_a; 2055 c->valid=1; 2056 } 2057 2058 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 2059 #define ku_reject(x, usage) \ 2060 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 2061 2062 #ifndef OPENSSL_NO_EC 2063 2064 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2065 { 2066 unsigned long alg_k, alg_a; 2067 EVP_PKEY *pkey = NULL; 2068 int keysize = 0; 2069 int signature_nid = 0; 2070 const SSL_CIPHER *cs = s->s3->tmp.new_cipher; 2071 2072 alg_k = cs->algorithm_mkey; 2073 alg_a = cs->algorithm_auth; 2074 2075 if (SSL_C_IS_EXPORT(cs)) 2076 { 2077 /* ECDH key length in export ciphers must be <= 163 bits */ 2078 pkey = X509_get_pubkey(x); 2079 if (pkey == NULL) return 0; 2080 keysize = EVP_PKEY_bits(pkey); 2081 EVP_PKEY_free(pkey); 2082 if (keysize > 163) return 0; 2083 } 2084 2085 /* This call populates the ex_flags field correctly */ 2086 X509_check_purpose(x, -1, 0); 2087 if ((x->sig_alg) && (x->sig_alg->algorithm)) 2088 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 2089 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) 2090 { 2091 /* key usage, if present, must allow key agreement */ 2092 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 2093 { 2094 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT); 2095 return 0; 2096 } 2097 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) 2098 { 2099 /* signature alg must be ECDSA */ 2100 if (signature_nid != NID_ecdsa_with_SHA1) 2101 { 2102 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE); 2103 return 0; 2104 } 2105 } 2106 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) 2107 { 2108 /* signature alg must be RSA */ 2109 2110 const char *sig = OBJ_nid2ln(signature_nid); 2111 if (sig == NULL) 2112 { 2113 ERR_clear_error(); 2114 sig = "unknown"; 2115 } 2116 if (strstr(sig, "WithRSA") == NULL) 2117 { 2118 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE); 2119 return 0; 2120 } 2121 } 2122 } 2123 if (alg_a & SSL_aECDSA) 2124 { 2125 /* key usage, if present, must allow signing */ 2126 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 2127 { 2128 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2129 return 0; 2130 } 2131 } 2132 2133 return 1; /* all checks are ok */ 2134 } 2135 2136 #endif 2137 2138 /* THIS NEEDS CLEANING UP */ 2139 X509 *ssl_get_server_send_cert(SSL *s) 2140 { 2141 unsigned long alg_k,alg_a; 2142 CERT *c; 2143 int i; 2144 2145 c=s->cert; 2146 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 2147 2148 alg_k = s->s3->tmp.new_cipher->algorithm_mkey; 2149 alg_a = s->s3->tmp.new_cipher->algorithm_auth; 2150 2151 if (alg_k & (SSL_kECDHr|SSL_kECDHe)) 2152 { 2153 /* we don't need to look at SSL_kEECDH 2154 * since no certificate is needed for 2155 * anon ECDH and for authenticated 2156 * EECDH, the check for the auth 2157 * algorithm will set i correctly 2158 * NOTE: For ECDH-RSA, we need an ECC 2159 * not an RSA cert but for EECDH-RSA 2160 * we need an RSA cert. Placing the 2161 * checks for SSL_kECDH before RSA 2162 * checks ensures the correct cert is chosen. 2163 */ 2164 i=SSL_PKEY_ECC; 2165 } 2166 else if (alg_a & SSL_aECDSA) 2167 { 2168 i=SSL_PKEY_ECC; 2169 } 2170 else if (alg_k & SSL_kDHr) 2171 i=SSL_PKEY_DH_RSA; 2172 else if (alg_k & SSL_kDHd) 2173 i=SSL_PKEY_DH_DSA; 2174 else if (alg_a & SSL_aDSS) 2175 i=SSL_PKEY_DSA_SIGN; 2176 else if (alg_a & SSL_aRSA) 2177 { 2178 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2179 i=SSL_PKEY_RSA_SIGN; 2180 else 2181 i=SSL_PKEY_RSA_ENC; 2182 } 2183 else if (alg_a & SSL_aKRB5) 2184 { 2185 /* VRS something else here? */ 2186 return(NULL); 2187 } 2188 else if (alg_a & SSL_aGOST94) 2189 i=SSL_PKEY_GOST94; 2190 else if (alg_a & SSL_aGOST01) 2191 i=SSL_PKEY_GOST01; 2192 else /* if (alg_a & SSL_aNULL) */ 2193 { 2194 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 2195 return(NULL); 2196 } 2197 if (c->pkeys[i].x509 == NULL) return(NULL); 2198 2199 return(c->pkeys[i].x509); 2200 } 2201 2202 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd) 2203 { 2204 unsigned long alg_a; 2205 CERT *c; 2206 int idx = -1; 2207 2208 alg_a = cipher->algorithm_auth; 2209 c=s->cert; 2210 2211 if ((alg_a & SSL_aDSS) && 2212 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2213 idx = SSL_PKEY_DSA_SIGN; 2214 else if (alg_a & SSL_aRSA) 2215 { 2216 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2217 idx = SSL_PKEY_RSA_SIGN; 2218 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2219 idx = SSL_PKEY_RSA_ENC; 2220 } 2221 else if ((alg_a & SSL_aECDSA) && 2222 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2223 idx = SSL_PKEY_ECC; 2224 if (idx == -1) 2225 { 2226 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2227 return(NULL); 2228 } 2229 if (pmd) 2230 *pmd = c->pkeys[idx].digest; 2231 return c->pkeys[idx].privatekey; 2232 } 2233 2234 void ssl_update_cache(SSL *s,int mode) 2235 { 2236 int i; 2237 2238 /* If the session_id_length is 0, we are not supposed to cache it, 2239 * and it would be rather hard to do anyway :-) */ 2240 if (s->session->session_id_length == 0) return; 2241 2242 i=s->session_ctx->session_cache_mode; 2243 if ((i & mode) && (!s->hit) 2244 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2245 || SSL_CTX_add_session(s->session_ctx,s->session)) 2246 && (s->session_ctx->new_session_cb != NULL)) 2247 { 2248 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2249 if (!s->session_ctx->new_session_cb(s,s->session)) 2250 SSL_SESSION_free(s->session); 2251 } 2252 2253 /* auto flush every 255 connections */ 2254 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2255 ((i & mode) == mode)) 2256 { 2257 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2258 ?s->session_ctx->stats.sess_connect_good 2259 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) 2260 { 2261 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL)); 2262 } 2263 } 2264 } 2265 2266 const SSL_METHOD *SSL_get_ssl_method(SSL *s) 2267 { 2268 return(s->method); 2269 } 2270 2271 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2272 { 2273 int conn= -1; 2274 int ret=1; 2275 2276 if (s->method != meth) 2277 { 2278 if (s->handshake_func != NULL) 2279 conn=(s->handshake_func == s->method->ssl_connect); 2280 2281 if (s->method->version == meth->version) 2282 s->method=meth; 2283 else 2284 { 2285 s->method->ssl_free(s); 2286 s->method=meth; 2287 ret=s->method->ssl_new(s); 2288 } 2289 2290 if (conn == 1) 2291 s->handshake_func=meth->ssl_connect; 2292 else if (conn == 0) 2293 s->handshake_func=meth->ssl_accept; 2294 } 2295 return(ret); 2296 } 2297 2298 int SSL_get_error(const SSL *s,int i) 2299 { 2300 int reason; 2301 unsigned long l; 2302 BIO *bio; 2303 2304 if (i > 0) return(SSL_ERROR_NONE); 2305 2306 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2307 * etc, where we do encode the error */ 2308 if ((l=ERR_peek_error()) != 0) 2309 { 2310 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2311 return(SSL_ERROR_SYSCALL); 2312 else 2313 return(SSL_ERROR_SSL); 2314 } 2315 2316 if ((i < 0) && SSL_want_read(s)) 2317 { 2318 bio=SSL_get_rbio(s); 2319 if (BIO_should_read(bio)) 2320 return(SSL_ERROR_WANT_READ); 2321 else if (BIO_should_write(bio)) 2322 /* This one doesn't make too much sense ... We never try 2323 * to write to the rbio, and an application program where 2324 * rbio and wbio are separate couldn't even know what it 2325 * should wait for. 2326 * However if we ever set s->rwstate incorrectly 2327 * (so that we have SSL_want_read(s) instead of 2328 * SSL_want_write(s)) and rbio and wbio *are* the same, 2329 * this test works around that bug; so it might be safer 2330 * to keep it. */ 2331 return(SSL_ERROR_WANT_WRITE); 2332 else if (BIO_should_io_special(bio)) 2333 { 2334 reason=BIO_get_retry_reason(bio); 2335 if (reason == BIO_RR_CONNECT) 2336 return(SSL_ERROR_WANT_CONNECT); 2337 else if (reason == BIO_RR_ACCEPT) 2338 return(SSL_ERROR_WANT_ACCEPT); 2339 else 2340 return(SSL_ERROR_SYSCALL); /* unknown */ 2341 } 2342 } 2343 2344 if ((i < 0) && SSL_want_write(s)) 2345 { 2346 bio=SSL_get_wbio(s); 2347 if (BIO_should_write(bio)) 2348 return(SSL_ERROR_WANT_WRITE); 2349 else if (BIO_should_read(bio)) 2350 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2351 return(SSL_ERROR_WANT_READ); 2352 else if (BIO_should_io_special(bio)) 2353 { 2354 reason=BIO_get_retry_reason(bio); 2355 if (reason == BIO_RR_CONNECT) 2356 return(SSL_ERROR_WANT_CONNECT); 2357 else if (reason == BIO_RR_ACCEPT) 2358 return(SSL_ERROR_WANT_ACCEPT); 2359 else 2360 return(SSL_ERROR_SYSCALL); 2361 } 2362 } 2363 if ((i < 0) && SSL_want_x509_lookup(s)) 2364 { 2365 return(SSL_ERROR_WANT_X509_LOOKUP); 2366 } 2367 2368 if (i == 0) 2369 { 2370 if (s->version == SSL2_VERSION) 2371 { 2372 /* assume it is the socket being closed */ 2373 return(SSL_ERROR_ZERO_RETURN); 2374 } 2375 else 2376 { 2377 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2378 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2379 return(SSL_ERROR_ZERO_RETURN); 2380 } 2381 } 2382 return(SSL_ERROR_SYSCALL); 2383 } 2384 2385 int SSL_do_handshake(SSL *s) 2386 { 2387 int ret=1; 2388 2389 if (s->handshake_func == NULL) 2390 { 2391 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2392 return(-1); 2393 } 2394 2395 s->method->ssl_renegotiate_check(s); 2396 2397 if (SSL_in_init(s) || SSL_in_before(s)) 2398 { 2399 ret=s->handshake_func(s); 2400 } 2401 return(ret); 2402 } 2403 2404 /* For the next 2 functions, SSL_clear() sets shutdown and so 2405 * one of these calls will reset it */ 2406 void SSL_set_accept_state(SSL *s) 2407 { 2408 s->server=1; 2409 s->shutdown=0; 2410 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2411 s->handshake_func=s->method->ssl_accept; 2412 /* clear the current cipher */ 2413 ssl_clear_cipher_ctx(s); 2414 ssl_clear_hash_ctx(&s->read_hash); 2415 ssl_clear_hash_ctx(&s->write_hash); 2416 } 2417 2418 void SSL_set_connect_state(SSL *s) 2419 { 2420 s->server=0; 2421 s->shutdown=0; 2422 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2423 s->handshake_func=s->method->ssl_connect; 2424 /* clear the current cipher */ 2425 ssl_clear_cipher_ctx(s); 2426 ssl_clear_hash_ctx(&s->read_hash); 2427 ssl_clear_hash_ctx(&s->write_hash); 2428 } 2429 2430 int ssl_undefined_function(SSL *s) 2431 { 2432 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2433 return(0); 2434 } 2435 2436 int ssl_undefined_void_function(void) 2437 { 2438 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2439 return(0); 2440 } 2441 2442 int ssl_undefined_const_function(const SSL *s) 2443 { 2444 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2445 return(0); 2446 } 2447 2448 SSL_METHOD *ssl_bad_method(int ver) 2449 { 2450 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2451 return(NULL); 2452 } 2453 2454 const char *SSL_get_version(const SSL *s) 2455 { 2456 if (s->version == TLS1_2_VERSION) 2457 return("TLSv1.2"); 2458 else if (s->version == TLS1_1_VERSION) 2459 return("TLSv1.1"); 2460 if (s->version == TLS1_VERSION) 2461 return("TLSv1"); 2462 else if (s->version == SSL3_VERSION) 2463 return("SSLv3"); 2464 else if (s->version == SSL2_VERSION) 2465 return("SSLv2"); 2466 else 2467 return("unknown"); 2468 } 2469 2470 SSL *SSL_dup(SSL *s) 2471 { 2472 STACK_OF(X509_NAME) *sk; 2473 X509_NAME *xn; 2474 SSL *ret; 2475 int i; 2476 2477 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2478 return(NULL); 2479 2480 ret->version = s->version; 2481 ret->type = s->type; 2482 ret->method = s->method; 2483 2484 if (s->session != NULL) 2485 { 2486 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2487 SSL_copy_session_id(ret,s); 2488 } 2489 else 2490 { 2491 /* No session has been established yet, so we have to expect 2492 * that s->cert or ret->cert will be changed later -- 2493 * they should not both point to the same object, 2494 * and thus we can't use SSL_copy_session_id. */ 2495 2496 ret->method->ssl_free(ret); 2497 ret->method = s->method; 2498 ret->method->ssl_new(ret); 2499 2500 if (s->cert != NULL) 2501 { 2502 if (ret->cert != NULL) 2503 { 2504 ssl_cert_free(ret->cert); 2505 } 2506 ret->cert = ssl_cert_dup(s->cert); 2507 if (ret->cert == NULL) 2508 goto err; 2509 } 2510 2511 SSL_set_session_id_context(ret, 2512 s->sid_ctx, s->sid_ctx_length); 2513 } 2514 2515 ret->options=s->options; 2516 ret->mode=s->mode; 2517 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2518 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2519 ret->msg_callback = s->msg_callback; 2520 ret->msg_callback_arg = s->msg_callback_arg; 2521 SSL_set_verify(ret,SSL_get_verify_mode(s), 2522 SSL_get_verify_callback(s)); 2523 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2524 ret->generate_session_id = s->generate_session_id; 2525 2526 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2527 2528 ret->debug=s->debug; 2529 2530 /* copy app data, a little dangerous perhaps */ 2531 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2532 goto err; 2533 2534 /* setup rbio, and wbio */ 2535 if (s->rbio != NULL) 2536 { 2537 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2538 goto err; 2539 } 2540 if (s->wbio != NULL) 2541 { 2542 if (s->wbio != s->rbio) 2543 { 2544 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2545 goto err; 2546 } 2547 else 2548 ret->wbio=ret->rbio; 2549 } 2550 ret->rwstate = s->rwstate; 2551 ret->in_handshake = s->in_handshake; 2552 ret->handshake_func = s->handshake_func; 2553 ret->server = s->server; 2554 ret->renegotiate = s->renegotiate; 2555 ret->new_session = s->new_session; 2556 ret->quiet_shutdown = s->quiet_shutdown; 2557 ret->shutdown=s->shutdown; 2558 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2559 ret->rstate=s->rstate; 2560 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2561 ret->hit=s->hit; 2562 2563 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2564 2565 /* dup the cipher_list and cipher_list_by_id stacks */ 2566 if (s->cipher_list != NULL) 2567 { 2568 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2569 goto err; 2570 } 2571 if (s->cipher_list_by_id != NULL) 2572 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2573 == NULL) 2574 goto err; 2575 2576 /* Dup the client_CA list */ 2577 if (s->client_CA != NULL) 2578 { 2579 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2580 ret->client_CA=sk; 2581 for (i=0; i<sk_X509_NAME_num(sk); i++) 2582 { 2583 xn=sk_X509_NAME_value(sk,i); 2584 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2585 { 2586 X509_NAME_free(xn); 2587 goto err; 2588 } 2589 } 2590 } 2591 2592 if (0) 2593 { 2594 err: 2595 if (ret != NULL) SSL_free(ret); 2596 ret=NULL; 2597 } 2598 return(ret); 2599 } 2600 2601 void ssl_clear_cipher_ctx(SSL *s) 2602 { 2603 if (s->enc_read_ctx != NULL) 2604 { 2605 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2606 OPENSSL_free(s->enc_read_ctx); 2607 s->enc_read_ctx=NULL; 2608 } 2609 if (s->enc_write_ctx != NULL) 2610 { 2611 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2612 OPENSSL_free(s->enc_write_ctx); 2613 s->enc_write_ctx=NULL; 2614 } 2615 #ifndef OPENSSL_NO_COMP 2616 if (s->expand != NULL) 2617 { 2618 COMP_CTX_free(s->expand); 2619 s->expand=NULL; 2620 } 2621 if (s->compress != NULL) 2622 { 2623 COMP_CTX_free(s->compress); 2624 s->compress=NULL; 2625 } 2626 #endif 2627 } 2628 2629 /* Fix this function so that it takes an optional type parameter */ 2630 X509 *SSL_get_certificate(const SSL *s) 2631 { 2632 if (s->cert != NULL) 2633 return(s->cert->key->x509); 2634 else 2635 return(NULL); 2636 } 2637 2638 /* Fix this function so that it takes an optional type parameter */ 2639 EVP_PKEY *SSL_get_privatekey(SSL *s) 2640 { 2641 if (s->cert != NULL) 2642 return(s->cert->key->privatekey); 2643 else 2644 return(NULL); 2645 } 2646 2647 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2648 { 2649 if ((s->session != NULL) && (s->session->cipher != NULL)) 2650 return(s->session->cipher); 2651 return(NULL); 2652 } 2653 #ifdef OPENSSL_NO_COMP 2654 const void *SSL_get_current_compression(SSL *s) 2655 { 2656 return NULL; 2657 } 2658 const void *SSL_get_current_expansion(SSL *s) 2659 { 2660 return NULL; 2661 } 2662 #else 2663 2664 const COMP_METHOD *SSL_get_current_compression(SSL *s) 2665 { 2666 if (s->compress != NULL) 2667 return(s->compress->meth); 2668 return(NULL); 2669 } 2670 2671 const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2672 { 2673 if (s->expand != NULL) 2674 return(s->expand->meth); 2675 return(NULL); 2676 } 2677 #endif 2678 2679 int ssl_init_wbio_buffer(SSL *s,int push) 2680 { 2681 BIO *bbio; 2682 2683 if (s->bbio == NULL) 2684 { 2685 bbio=BIO_new(BIO_f_buffer()); 2686 if (bbio == NULL) return(0); 2687 s->bbio=bbio; 2688 } 2689 else 2690 { 2691 bbio=s->bbio; 2692 if (s->bbio == s->wbio) 2693 s->wbio=BIO_pop(s->wbio); 2694 } 2695 (void)BIO_reset(bbio); 2696 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2697 if (!BIO_set_read_buffer_size(bbio,1)) 2698 { 2699 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2700 return(0); 2701 } 2702 if (push) 2703 { 2704 if (s->wbio != bbio) 2705 s->wbio=BIO_push(bbio,s->wbio); 2706 } 2707 else 2708 { 2709 if (s->wbio == bbio) 2710 s->wbio=BIO_pop(bbio); 2711 } 2712 return(1); 2713 } 2714 2715 void ssl_free_wbio_buffer(SSL *s) 2716 { 2717 if (s->bbio == NULL) return; 2718 2719 if (s->bbio == s->wbio) 2720 { 2721 /* remove buffering */ 2722 s->wbio=BIO_pop(s->wbio); 2723 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2724 assert(s->wbio != NULL); 2725 #endif 2726 } 2727 BIO_free(s->bbio); 2728 s->bbio=NULL; 2729 } 2730 2731 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2732 { 2733 ctx->quiet_shutdown=mode; 2734 } 2735 2736 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2737 { 2738 return(ctx->quiet_shutdown); 2739 } 2740 2741 void SSL_set_quiet_shutdown(SSL *s,int mode) 2742 { 2743 s->quiet_shutdown=mode; 2744 } 2745 2746 int SSL_get_quiet_shutdown(const SSL *s) 2747 { 2748 return(s->quiet_shutdown); 2749 } 2750 2751 void SSL_set_shutdown(SSL *s,int mode) 2752 { 2753 s->shutdown=mode; 2754 } 2755 2756 int SSL_get_shutdown(const SSL *s) 2757 { 2758 return(s->shutdown); 2759 } 2760 2761 int SSL_version(const SSL *s) 2762 { 2763 return(s->version); 2764 } 2765 2766 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2767 { 2768 return(ssl->ctx); 2769 } 2770 2771 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2772 { 2773 if (ssl->ctx == ctx) 2774 return ssl->ctx; 2775 #ifndef OPENSSL_NO_TLSEXT 2776 if (ctx == NULL) 2777 ctx = ssl->initial_ctx; 2778 #endif 2779 if (ssl->cert != NULL) 2780 ssl_cert_free(ssl->cert); 2781 ssl->cert = ssl_cert_dup(ctx->cert); 2782 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 2783 if (ssl->ctx != NULL) 2784 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2785 ssl->ctx = ctx; 2786 return(ssl->ctx); 2787 } 2788 2789 #ifndef OPENSSL_NO_STDIO 2790 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2791 { 2792 return(X509_STORE_set_default_paths(ctx->cert_store)); 2793 } 2794 2795 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2796 const char *CApath) 2797 { 2798 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2799 } 2800 #endif 2801 2802 void SSL_set_info_callback(SSL *ssl, 2803 void (*cb)(const SSL *ssl,int type,int val)) 2804 { 2805 ssl->info_callback=cb; 2806 } 2807 2808 /* One compiler (Diab DCC) doesn't like argument names in returned 2809 function pointer. */ 2810 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2811 { 2812 return ssl->info_callback; 2813 } 2814 2815 int SSL_state(const SSL *ssl) 2816 { 2817 return(ssl->state); 2818 } 2819 2820 void SSL_set_state(SSL *ssl, int state) 2821 { 2822 ssl->state = state; 2823 } 2824 2825 void SSL_set_verify_result(SSL *ssl,long arg) 2826 { 2827 ssl->verify_result=arg; 2828 } 2829 2830 long SSL_get_verify_result(const SSL *ssl) 2831 { 2832 return(ssl->verify_result); 2833 } 2834 2835 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2836 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2837 { 2838 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2839 new_func, dup_func, free_func); 2840 } 2841 2842 int SSL_set_ex_data(SSL *s,int idx,void *arg) 2843 { 2844 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2845 } 2846 2847 void *SSL_get_ex_data(const SSL *s,int idx) 2848 { 2849 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2850 } 2851 2852 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2853 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2854 { 2855 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2856 new_func, dup_func, free_func); 2857 } 2858 2859 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2860 { 2861 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2862 } 2863 2864 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 2865 { 2866 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2867 } 2868 2869 int ssl_ok(SSL *s) 2870 { 2871 return(1); 2872 } 2873 2874 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2875 { 2876 return(ctx->cert_store); 2877 } 2878 2879 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2880 { 2881 if (ctx->cert_store != NULL) 2882 X509_STORE_free(ctx->cert_store); 2883 ctx->cert_store=store; 2884 } 2885 2886 int SSL_want(const SSL *s) 2887 { 2888 return(s->rwstate); 2889 } 2890 2891 /*! 2892 * \brief Set the callback for generating temporary RSA keys. 2893 * \param ctx the SSL context. 2894 * \param cb the callback 2895 */ 2896 2897 #ifndef OPENSSL_NO_RSA 2898 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2899 int is_export, 2900 int keylength)) 2901 { 2902 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2903 } 2904 2905 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2906 int is_export, 2907 int keylength)) 2908 { 2909 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2910 } 2911 #endif 2912 2913 #ifdef DOXYGEN 2914 /*! 2915 * \brief The RSA temporary key callback function. 2916 * \param ssl the SSL session. 2917 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2918 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2919 * of the required key in bits. 2920 * \return the temporary RSA key. 2921 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2922 */ 2923 2924 RSA *cb(SSL *ssl,int is_export,int keylength) 2925 {} 2926 #endif 2927 2928 /*! 2929 * \brief Set the callback for generating temporary DH keys. 2930 * \param ctx the SSL context. 2931 * \param dh the callback 2932 */ 2933 2934 #ifndef OPENSSL_NO_DH 2935 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2936 int keylength)) 2937 { 2938 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2939 } 2940 2941 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2942 int keylength)) 2943 { 2944 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2945 } 2946 #endif 2947 2948 #ifndef OPENSSL_NO_ECDH 2949 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2950 int keylength)) 2951 { 2952 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2953 } 2954 2955 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2956 int keylength)) 2957 { 2958 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2959 } 2960 #endif 2961 2962 #ifndef OPENSSL_NO_PSK 2963 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint) 2964 { 2965 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 2966 { 2967 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 2968 return 0; 2969 } 2970 if (ctx->psk_identity_hint != NULL) 2971 OPENSSL_free(ctx->psk_identity_hint); 2972 if (identity_hint != NULL) 2973 { 2974 ctx->psk_identity_hint = BUF_strdup(identity_hint); 2975 if (ctx->psk_identity_hint == NULL) 2976 return 0; 2977 } 2978 else 2979 ctx->psk_identity_hint = NULL; 2980 return 1; 2981 } 2982 2983 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint) 2984 { 2985 if (s == NULL) 2986 return 0; 2987 2988 if (s->session == NULL) 2989 return 1; /* session not created yet, ignored */ 2990 2991 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) 2992 { 2993 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG); 2994 return 0; 2995 } 2996 if (s->session->psk_identity_hint != NULL) 2997 OPENSSL_free(s->session->psk_identity_hint); 2998 if (identity_hint != NULL) 2999 { 3000 s->session->psk_identity_hint = BUF_strdup(identity_hint); 3001 if (s->session->psk_identity_hint == NULL) 3002 return 0; 3003 } 3004 else 3005 s->session->psk_identity_hint = NULL; 3006 return 1; 3007 } 3008 3009 const char *SSL_get_psk_identity_hint(const SSL *s) 3010 { 3011 if (s == NULL || s->session == NULL) 3012 return NULL; 3013 return(s->session->psk_identity_hint); 3014 } 3015 3016 const char *SSL_get_psk_identity(const SSL *s) 3017 { 3018 if (s == NULL || s->session == NULL) 3019 return NULL; 3020 return(s->session->psk_identity); 3021 } 3022 3023 void SSL_set_psk_client_callback(SSL *s, 3024 unsigned int (*cb)(SSL *ssl, const char *hint, 3025 char *identity, unsigned int max_identity_len, unsigned char *psk, 3026 unsigned int max_psk_len)) 3027 { 3028 s->psk_client_callback = cb; 3029 } 3030 3031 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 3032 unsigned int (*cb)(SSL *ssl, const char *hint, 3033 char *identity, unsigned int max_identity_len, unsigned char *psk, 3034 unsigned int max_psk_len)) 3035 { 3036 ctx->psk_client_callback = cb; 3037 } 3038 3039 void SSL_set_psk_server_callback(SSL *s, 3040 unsigned int (*cb)(SSL *ssl, const char *identity, 3041 unsigned char *psk, unsigned int max_psk_len)) 3042 { 3043 s->psk_server_callback = cb; 3044 } 3045 3046 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 3047 unsigned int (*cb)(SSL *ssl, const char *identity, 3048 unsigned char *psk, unsigned int max_psk_len)) 3049 { 3050 ctx->psk_server_callback = cb; 3051 } 3052 #endif 3053 3054 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)) 3055 { 3056 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3057 } 3058 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)) 3059 { 3060 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3061 } 3062 3063 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer 3064 * vairable, freeing EVP_MD_CTX previously stored in that variable, if 3065 * any. If EVP_MD pointer is passed, initializes ctx with this md 3066 * Returns newly allocated ctx; 3067 */ 3068 3069 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 3070 { 3071 ssl_clear_hash_ctx(hash); 3072 *hash = EVP_MD_CTX_create(); 3073 if (md) EVP_DigestInit_ex(*hash,md,NULL); 3074 return *hash; 3075 } 3076 void ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3077 { 3078 3079 if (*hash) EVP_MD_CTX_destroy(*hash); 3080 *hash=NULL; 3081 } 3082 3083 void SSL_set_debug(SSL *s, int debug) 3084 { 3085 s->debug = debug; 3086 } 3087 3088 int SSL_cache_hit(SSL *s) 3089 { 3090 return s->hit; 3091 } 3092 3093 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 3094 #include "../crypto/bio/bss_file.c" 3095 #endif 3096 3097 IMPLEMENT_STACK_OF(SSL_CIPHER) 3098 IMPLEMENT_STACK_OF(SSL_COMP) 3099 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, 3100 ssl_cipher_id); 3101 3102