ssl_lib.c revision 279265
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) 1998-2001 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#ifdef REF_CHECK 120# include <assert.h> 121#endif 122#include <stdio.h> 123#include "ssl_locl.h" 124#include "kssl_lcl.h" 125#include <openssl/objects.h> 126#include <openssl/lhash.h> 127#include <openssl/x509v3.h> 128#include <openssl/rand.h> 129#include <openssl/ocsp.h> 130#ifndef OPENSSL_NO_DH 131#include <openssl/dh.h> 132#endif 133#ifndef OPENSSL_NO_ENGINE 134#include <openssl/engine.h> 135#endif 136 137const char *SSL_version_str=OPENSSL_VERSION_TEXT; 138 139SSL3_ENC_METHOD ssl3_undef_enc_method={ 140 /* evil casts, but these functions are only called if there's a library bug */ 141 (int (*)(SSL *,int))ssl_undefined_function, 142 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 143 ssl_undefined_function, 144 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 145 (int (*)(SSL*, int))ssl_undefined_function, 146 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function, 147 0, /* finish_mac_length */ 148 (int (*)(SSL *, EVP_MD_CTX *, unsigned char *))ssl_undefined_function, 149 NULL, /* client_finished_label */ 150 0, /* client_finished_label_len */ 151 NULL, /* server_finished_label */ 152 0, /* server_finished_label_len */ 153 (int (*)(int))ssl_undefined_function 154 }; 155 156int SSL_clear(SSL *s) 157 { 158 159 if (s->method == NULL) 160 { 161 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 162 return(0); 163 } 164 165 if (ssl_clear_bad_session(s)) 166 { 167 SSL_SESSION_free(s->session); 168 s->session=NULL; 169 } 170 171 s->error=0; 172 s->hit=0; 173 s->shutdown=0; 174 175#if 0 /* Disabled since version 1.10 of this file (early return not 176 * needed because SSL_clear is not called when doing renegotiation) */ 177 /* This is set if we are doing dynamic renegotiation so keep 178 * the old cipher. It is sort of a SSL_clear_lite :-) */ 179 if (s->new_session) return(1); 180#else 181 if (s->new_session) 182 { 183 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 184 return 0; 185 } 186#endif 187 188 s->type=0; 189 190 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 191 192 s->version=s->method->version; 193 s->client_version=s->version; 194 s->rwstate=SSL_NOTHING; 195 s->rstate=SSL_ST_READ_HEADER; 196#if 0 197 s->read_ahead=s->ctx->read_ahead; 198#endif 199 200 if (s->init_buf != NULL) 201 { 202 BUF_MEM_free(s->init_buf); 203 s->init_buf=NULL; 204 } 205 206 ssl_clear_cipher_ctx(s); 207 208 s->first_packet=0; 209 210#if 1 211 /* Check to see if we were changed into a different method, if 212 * so, revert back if we are not doing session-id reuse. */ 213 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 214 { 215 s->method->ssl_free(s); 216 s->method=s->ctx->method; 217 if (!s->method->ssl_new(s)) 218 return(0); 219 } 220 else 221#endif 222 s->method->ssl_clear(s); 223 return(1); 224 } 225 226/** Used to change an SSL_CTXs default SSL method type */ 227int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth) 228 { 229 STACK_OF(SSL_CIPHER) *sk; 230 231 ctx->method=meth; 232 233 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 234 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST); 235 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 236 { 237 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 238 return(0); 239 } 240 return(1); 241 } 242 243SSL *SSL_new(SSL_CTX *ctx) 244 { 245 SSL *s; 246 247 if (ctx == NULL) 248 { 249 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 250 return(NULL); 251 } 252 if (ctx->method == NULL) 253 { 254 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 255 return(NULL); 256 } 257 258 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 259 if (s == NULL) goto err; 260 memset(s,0,sizeof(SSL)); 261 262#ifndef OPENSSL_NO_KRB5 263 s->kssl_ctx = kssl_ctx_new(); 264#endif /* OPENSSL_NO_KRB5 */ 265 266 s->options=ctx->options; 267 s->mode=ctx->mode; 268 s->max_cert_list=ctx->max_cert_list; 269 270 if (ctx->cert != NULL) 271 { 272 /* Earlier library versions used to copy the pointer to 273 * the CERT, not its contents; only when setting new 274 * parameters for the per-SSL copy, ssl_cert_new would be 275 * called (and the direct reference to the per-SSL_CTX 276 * settings would be lost, but those still were indirectly 277 * accessed for various purposes, and for that reason they 278 * used to be known as s->ctx->default_cert). 279 * Now we don't look at the SSL_CTX's CERT after having 280 * duplicated it once. */ 281 282 s->cert = ssl_cert_dup(ctx->cert); 283 if (s->cert == NULL) 284 goto err; 285 } 286 else 287 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 288 289 s->read_ahead=ctx->read_ahead; 290 s->msg_callback=ctx->msg_callback; 291 s->msg_callback_arg=ctx->msg_callback_arg; 292 s->verify_mode=ctx->verify_mode; 293#if 0 294 s->verify_depth=ctx->verify_depth; 295#endif 296 s->sid_ctx_length=ctx->sid_ctx_length; 297 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 298 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 299 s->verify_callback=ctx->default_verify_callback; 300 s->generate_session_id=ctx->generate_session_id; 301 302 s->param = X509_VERIFY_PARAM_new(); 303 if (!s->param) 304 goto err; 305 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 306#if 0 307 s->purpose = ctx->purpose; 308 s->trust = ctx->trust; 309#endif 310 s->quiet_shutdown=ctx->quiet_shutdown; 311 312 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 313 s->ctx=ctx; 314#ifndef OPENSSL_NO_TLSEXT 315 s->tlsext_debug_cb = 0; 316 s->tlsext_debug_arg = NULL; 317 s->tlsext_ticket_expected = 0; 318 s->tlsext_status_type = -1; 319 s->tlsext_status_expected = 0; 320 s->tlsext_ocsp_ids = NULL; 321 s->tlsext_ocsp_exts = NULL; 322 s->tlsext_ocsp_resp = NULL; 323 s->tlsext_ocsp_resplen = -1; 324 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 325 s->initial_ctx=ctx; 326#endif 327 s->verify_result=X509_V_OK; 328 329 s->method=ctx->method; 330 331 if (!s->method->ssl_new(s)) 332 goto err; 333 334 s->references=1; 335 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 336 337 SSL_clear(s); 338 339 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 340 341 return(s); 342err: 343 if (s != NULL) 344 { 345 if (s->cert != NULL) 346 ssl_cert_free(s->cert); 347 if (s->ctx != NULL) 348 SSL_CTX_free(s->ctx); /* decrement reference count */ 349 OPENSSL_free(s); 350 } 351 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 352 return(NULL); 353 } 354 355int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 356 unsigned int sid_ctx_len) 357 { 358 if(sid_ctx_len > sizeof ctx->sid_ctx) 359 { 360 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 361 return 0; 362 } 363 ctx->sid_ctx_length=sid_ctx_len; 364 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 365 366 return 1; 367 } 368 369int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 370 unsigned int sid_ctx_len) 371 { 372 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 373 { 374 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 375 return 0; 376 } 377 ssl->sid_ctx_length=sid_ctx_len; 378 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 379 380 return 1; 381 } 382 383int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 384 { 385 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 386 ctx->generate_session_id = cb; 387 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 388 return 1; 389 } 390 391int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 392 { 393 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 394 ssl->generate_session_id = cb; 395 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 396 return 1; 397 } 398 399int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 400 unsigned int id_len) 401 { 402 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 403 * we can "construct" a session to give us the desired check - ie. to 404 * find if there's a session in the hash table that would conflict with 405 * any new session built out of this id/id_len and the ssl_version in 406 * use by this SSL. */ 407 SSL_SESSION r, *p; 408 409 if(id_len > sizeof r.session_id) 410 return 0; 411 412 r.ssl_version = ssl->version; 413 r.session_id_length = id_len; 414 memcpy(r.session_id, id, id_len); 415 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 416 * callback is calling us to check the uniqueness of a shorter ID, it 417 * must be compared as a padded-out ID because that is what it will be 418 * converted to when the callback has finished choosing it. */ 419 if((r.ssl_version == SSL2_VERSION) && 420 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 421 { 422 memset(r.session_id + id_len, 0, 423 SSL2_SSL_SESSION_ID_LENGTH - id_len); 424 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 425 } 426 427 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 428 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r); 429 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 430 return (p != NULL); 431 } 432 433int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 434 { 435 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 436 } 437 438int SSL_set_purpose(SSL *s, int purpose) 439 { 440 return X509_VERIFY_PARAM_set_purpose(s->param, purpose); 441 } 442 443int SSL_CTX_set_trust(SSL_CTX *s, int trust) 444 { 445 return X509_VERIFY_PARAM_set_trust(s->param, trust); 446 } 447 448int SSL_set_trust(SSL *s, int trust) 449 { 450 return X509_VERIFY_PARAM_set_trust(s->param, trust); 451 } 452 453void SSL_free(SSL *s) 454 { 455 int i; 456 457 if(s == NULL) 458 return; 459 460 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 461#ifdef REF_PRINT 462 REF_PRINT("SSL",s); 463#endif 464 if (i > 0) return; 465#ifdef REF_CHECK 466 if (i < 0) 467 { 468 fprintf(stderr,"SSL_free, bad reference count\n"); 469 abort(); /* ok */ 470 } 471#endif 472 473 if (s->param) 474 X509_VERIFY_PARAM_free(s->param); 475 476 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 477 478 if (s->bbio != NULL) 479 { 480 /* If the buffering BIO is in place, pop it off */ 481 if (s->bbio == s->wbio) 482 { 483 s->wbio=BIO_pop(s->wbio); 484 } 485 BIO_free(s->bbio); 486 s->bbio=NULL; 487 } 488 if (s->rbio != NULL) 489 BIO_free_all(s->rbio); 490 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 491 BIO_free_all(s->wbio); 492 493 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 494 495 /* add extra stuff */ 496 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 497 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 498 499 /* Make the next call work :-) */ 500 if (s->session != NULL) 501 { 502 ssl_clear_bad_session(s); 503 SSL_SESSION_free(s->session); 504 } 505 506 ssl_clear_cipher_ctx(s); 507 508 if (s->cert != NULL) ssl_cert_free(s->cert); 509 /* Free up if allocated */ 510 511#ifndef OPENSSL_NO_TLSEXT 512 if (s->tlsext_hostname) 513 OPENSSL_free(s->tlsext_hostname); 514 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx); 515 if (s->tlsext_ocsp_exts) 516 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, 517 X509_EXTENSION_free); 518 if (s->tlsext_ocsp_ids) 519 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free); 520 if (s->tlsext_ocsp_resp) 521 OPENSSL_free(s->tlsext_ocsp_resp); 522#endif 523 if (s->client_CA != NULL) 524 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 525 526 if (s->method != NULL) s->method->ssl_free(s); 527 528 if (s->ctx) SSL_CTX_free(s->ctx); 529 530#ifndef OPENSSL_NO_KRB5 531 if (s->kssl_ctx != NULL) 532 kssl_ctx_free(s->kssl_ctx); 533#endif /* OPENSSL_NO_KRB5 */ 534 535 OPENSSL_free(s); 536 } 537 538void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 539 { 540 /* If the output buffering BIO is still in place, remove it 541 */ 542 if (s->bbio != NULL) 543 { 544 if (s->wbio == s->bbio) 545 { 546 s->wbio=s->wbio->next_bio; 547 s->bbio->next_bio=NULL; 548 } 549 } 550 if ((s->rbio != NULL) && (s->rbio != rbio)) 551 BIO_free_all(s->rbio); 552 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 553 BIO_free_all(s->wbio); 554 s->rbio=rbio; 555 s->wbio=wbio; 556 } 557 558BIO *SSL_get_rbio(const SSL *s) 559 { return(s->rbio); } 560 561BIO *SSL_get_wbio(const SSL *s) 562 { return(s->wbio); } 563 564int SSL_get_fd(const SSL *s) 565 { 566 return(SSL_get_rfd(s)); 567 } 568 569int SSL_get_rfd(const SSL *s) 570 { 571 int ret= -1; 572 BIO *b,*r; 573 574 b=SSL_get_rbio(s); 575 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 576 if (r != NULL) 577 BIO_get_fd(r,&ret); 578 return(ret); 579 } 580 581int SSL_get_wfd(const SSL *s) 582 { 583 int ret= -1; 584 BIO *b,*r; 585 586 b=SSL_get_wbio(s); 587 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 588 if (r != NULL) 589 BIO_get_fd(r,&ret); 590 return(ret); 591 } 592 593#ifndef OPENSSL_NO_SOCK 594int SSL_set_fd(SSL *s,int fd) 595 { 596 int ret=0; 597 BIO *bio=NULL; 598 599 bio=BIO_new(BIO_s_socket()); 600 601 if (bio == NULL) 602 { 603 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 604 goto err; 605 } 606 BIO_set_fd(bio,fd,BIO_NOCLOSE); 607 SSL_set_bio(s,bio,bio); 608 ret=1; 609err: 610 return(ret); 611 } 612 613int SSL_set_wfd(SSL *s,int fd) 614 { 615 int ret=0; 616 BIO *bio=NULL; 617 618 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 619 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 620 { 621 bio=BIO_new(BIO_s_socket()); 622 623 if (bio == NULL) 624 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 625 BIO_set_fd(bio,fd,BIO_NOCLOSE); 626 SSL_set_bio(s,SSL_get_rbio(s),bio); 627 } 628 else 629 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 630 ret=1; 631err: 632 return(ret); 633 } 634 635int SSL_set_rfd(SSL *s,int fd) 636 { 637 int ret=0; 638 BIO *bio=NULL; 639 640 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 641 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 642 { 643 bio=BIO_new(BIO_s_socket()); 644 645 if (bio == NULL) 646 { 647 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 648 goto err; 649 } 650 BIO_set_fd(bio,fd,BIO_NOCLOSE); 651 SSL_set_bio(s,bio,SSL_get_wbio(s)); 652 } 653 else 654 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 655 ret=1; 656err: 657 return(ret); 658 } 659#endif 660 661 662/* return length of latest Finished message we sent, copy to 'buf' */ 663size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 664 { 665 size_t ret = 0; 666 667 if (s->s3 != NULL) 668 { 669 ret = s->s3->tmp.finish_md_len; 670 if (count > ret) 671 count = ret; 672 memcpy(buf, s->s3->tmp.finish_md, count); 673 } 674 return ret; 675 } 676 677/* return length of latest Finished message we expected, copy to 'buf' */ 678size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 679 { 680 size_t ret = 0; 681 682 if (s->s3 != NULL) 683 { 684 ret = s->s3->tmp.peer_finish_md_len; 685 if (count > ret) 686 count = ret; 687 memcpy(buf, s->s3->tmp.peer_finish_md, count); 688 } 689 return ret; 690 } 691 692 693int SSL_get_verify_mode(const SSL *s) 694 { 695 return(s->verify_mode); 696 } 697 698int SSL_get_verify_depth(const SSL *s) 699 { 700 return X509_VERIFY_PARAM_get_depth(s->param); 701 } 702 703int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 704 { 705 return(s->verify_callback); 706 } 707 708int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 709 { 710 return(ctx->verify_mode); 711 } 712 713int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 714 { 715 return X509_VERIFY_PARAM_get_depth(ctx->param); 716 } 717 718int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 719 { 720 return(ctx->default_verify_callback); 721 } 722 723void SSL_set_verify(SSL *s,int mode, 724 int (*callback)(int ok,X509_STORE_CTX *ctx)) 725 { 726 s->verify_mode=mode; 727 if (callback != NULL) 728 s->verify_callback=callback; 729 } 730 731void SSL_set_verify_depth(SSL *s,int depth) 732 { 733 X509_VERIFY_PARAM_set_depth(s->param, depth); 734 } 735 736void SSL_set_read_ahead(SSL *s,int yes) 737 { 738 s->read_ahead=yes; 739 } 740 741int SSL_get_read_ahead(const SSL *s) 742 { 743 return(s->read_ahead); 744 } 745 746int SSL_pending(const SSL *s) 747 { 748 /* SSL_pending cannot work properly if read-ahead is enabled 749 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 750 * and it is impossible to fix since SSL_pending cannot report 751 * errors that may be observed while scanning the new data. 752 * (Note that SSL_pending() is often used as a boolean value, 753 * so we'd better not return -1.) 754 */ 755 return(s->method->ssl_pending(s)); 756 } 757 758X509 *SSL_get_peer_certificate(const SSL *s) 759 { 760 X509 *r; 761 762 if ((s == NULL) || (s->session == NULL)) 763 r=NULL; 764 else 765 r=s->session->peer; 766 767 if (r == NULL) return(r); 768 769 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 770 771 return(r); 772 } 773 774STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 775 { 776 STACK_OF(X509) *r; 777 778 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 779 r=NULL; 780 else 781 r=s->session->sess_cert->cert_chain; 782 783 /* If we are a client, cert_chain includes the peer's own 784 * certificate; if we are a server, it does not. */ 785 786 return(r); 787 } 788 789/* Now in theory, since the calling process own 't' it should be safe to 790 * modify. We need to be able to read f without being hassled */ 791void SSL_copy_session_id(SSL *t,const SSL *f) 792 { 793 CERT *tmp; 794 795 /* Do we need to to SSL locking? */ 796 SSL_set_session(t,SSL_get_session(f)); 797 798 /* what if we are setup as SSLv2 but want to talk SSLv3 or 799 * vice-versa */ 800 if (t->method != f->method) 801 { 802 t->method->ssl_free(t); /* cleanup current */ 803 t->method=f->method; /* change method */ 804 t->method->ssl_new(t); /* setup new */ 805 } 806 807 tmp=t->cert; 808 if (f->cert != NULL) 809 { 810 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 811 t->cert=f->cert; 812 } 813 else 814 t->cert=NULL; 815 if (tmp != NULL) ssl_cert_free(tmp); 816 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 817 } 818 819/* Fix this so it checks all the valid key/cert options */ 820int SSL_CTX_check_private_key(const SSL_CTX *ctx) 821 { 822 if ( (ctx == NULL) || 823 (ctx->cert == NULL) || 824 (ctx->cert->key->x509 == NULL)) 825 { 826 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 827 return(0); 828 } 829 if (ctx->cert->key->privatekey == NULL) 830 { 831 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 832 return(0); 833 } 834 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 835 } 836 837/* Fix this function so that it takes an optional type parameter */ 838int SSL_check_private_key(const SSL *ssl) 839 { 840 if (ssl == NULL) 841 { 842 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 843 return(0); 844 } 845 if (ssl->cert == NULL) 846 { 847 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 848 return 0; 849 } 850 if (ssl->cert->key->x509 == NULL) 851 { 852 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 853 return(0); 854 } 855 if (ssl->cert->key->privatekey == NULL) 856 { 857 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 858 return(0); 859 } 860 return(X509_check_private_key(ssl->cert->key->x509, 861 ssl->cert->key->privatekey)); 862 } 863 864int SSL_accept(SSL *s) 865 { 866 if (s->handshake_func == 0) 867 /* Not properly initialized yet */ 868 SSL_set_accept_state(s); 869 870 return(s->method->ssl_accept(s)); 871 } 872 873int SSL_connect(SSL *s) 874 { 875 if (s->handshake_func == 0) 876 /* Not properly initialized yet */ 877 SSL_set_connect_state(s); 878 879 return(s->method->ssl_connect(s)); 880 } 881 882long SSL_get_default_timeout(const SSL *s) 883 { 884 return(s->method->get_timeout()); 885 } 886 887int SSL_read(SSL *s,void *buf,int num) 888 { 889 if (s->handshake_func == 0) 890 { 891 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 892 return -1; 893 } 894 895 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 896 { 897 s->rwstate=SSL_NOTHING; 898 return(0); 899 } 900 return(s->method->ssl_read(s,buf,num)); 901 } 902 903int SSL_peek(SSL *s,void *buf,int num) 904 { 905 if (s->handshake_func == 0) 906 { 907 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED); 908 return -1; 909 } 910 911 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 912 { 913 return(0); 914 } 915 return(s->method->ssl_peek(s,buf,num)); 916 } 917 918int SSL_write(SSL *s,const void *buf,int num) 919 { 920 if (s->handshake_func == 0) 921 { 922 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 923 return -1; 924 } 925 926 if (s->shutdown & SSL_SENT_SHUTDOWN) 927 { 928 s->rwstate=SSL_NOTHING; 929 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 930 return(-1); 931 } 932 return(s->method->ssl_write(s,buf,num)); 933 } 934 935int SSL_shutdown(SSL *s) 936 { 937 /* Note that this function behaves differently from what one might 938 * expect. Return values are 0 for no success (yet), 939 * 1 for success; but calling it once is usually not enough, 940 * even if blocking I/O is used (see ssl3_shutdown). 941 */ 942 943 if (s->handshake_func == 0) 944 { 945 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 946 return -1; 947 } 948 949 if ((s != NULL) && !SSL_in_init(s)) 950 return(s->method->ssl_shutdown(s)); 951 else 952 return(1); 953 } 954 955int SSL_renegotiate(SSL *s) 956 { 957 if (s->new_session == 0) 958 { 959 s->new_session=1; 960 } 961 return(s->method->ssl_renegotiate(s)); 962 } 963 964int SSL_renegotiate_pending(SSL *s) 965 { 966 /* becomes true when negotiation is requested; 967 * false again once a handshake has finished */ 968 return (s->new_session != 0); 969 } 970 971long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 972 { 973 long l; 974 975 switch (cmd) 976 { 977 case SSL_CTRL_GET_READ_AHEAD: 978 return(s->read_ahead); 979 case SSL_CTRL_SET_READ_AHEAD: 980 l=s->read_ahead; 981 s->read_ahead=larg; 982 return(l); 983 984 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 985 s->msg_callback_arg = parg; 986 return 1; 987 988 case SSL_CTRL_OPTIONS: 989 return(s->options|=larg); 990 case SSL_CTRL_CLEAR_OPTIONS: 991 return(s->options&=~larg); 992 case SSL_CTRL_MODE: 993 return(s->mode|=larg); 994 case SSL_CTRL_CLEAR_MODE: 995 return(s->mode &=~larg); 996 case SSL_CTRL_GET_MAX_CERT_LIST: 997 return(s->max_cert_list); 998 case SSL_CTRL_SET_MAX_CERT_LIST: 999 l=s->max_cert_list; 1000 s->max_cert_list=larg; 1001 return(l); 1002 case SSL_CTRL_SET_MTU: 1003#ifndef OPENSSL_NO_DTLS1 1004 if (larg < (long)dtls1_min_mtu()) 1005 return 0; 1006#endif 1007 1008 if (SSL_version(s) == DTLS1_VERSION || 1009 SSL_version(s) == DTLS1_BAD_VER) 1010 { 1011 s->d1->mtu = larg; 1012 return larg; 1013 } 1014 return 0; 1015 case SSL_CTRL_GET_RI_SUPPORT: 1016 if (s->s3) 1017 return s->s3->send_connection_binding; 1018 else return 0; 1019 default: 1020 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 1021 } 1022 } 1023 1024long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1025 { 1026 switch(cmd) 1027 { 1028 case SSL_CTRL_SET_MSG_CALLBACK: 1029 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1030 return 1; 1031 1032 default: 1033 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 1034 } 1035 } 1036 1037struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx) 1038 { 1039 return ctx->sessions; 1040 } 1041 1042long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 1043 { 1044 long l; 1045 1046 switch (cmd) 1047 { 1048 case SSL_CTRL_GET_READ_AHEAD: 1049 return(ctx->read_ahead); 1050 case SSL_CTRL_SET_READ_AHEAD: 1051 l=ctx->read_ahead; 1052 ctx->read_ahead=larg; 1053 return(l); 1054 1055 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1056 ctx->msg_callback_arg = parg; 1057 return 1; 1058 1059 case SSL_CTRL_GET_MAX_CERT_LIST: 1060 return(ctx->max_cert_list); 1061 case SSL_CTRL_SET_MAX_CERT_LIST: 1062 l=ctx->max_cert_list; 1063 ctx->max_cert_list=larg; 1064 return(l); 1065 1066 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1067 l=ctx->session_cache_size; 1068 ctx->session_cache_size=larg; 1069 return(l); 1070 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1071 return(ctx->session_cache_size); 1072 case SSL_CTRL_SET_SESS_CACHE_MODE: 1073 l=ctx->session_cache_mode; 1074 ctx->session_cache_mode=larg; 1075 return(l); 1076 case SSL_CTRL_GET_SESS_CACHE_MODE: 1077 return(ctx->session_cache_mode); 1078 1079 case SSL_CTRL_SESS_NUMBER: 1080 return(ctx->sessions->num_items); 1081 case SSL_CTRL_SESS_CONNECT: 1082 return(ctx->stats.sess_connect); 1083 case SSL_CTRL_SESS_CONNECT_GOOD: 1084 return(ctx->stats.sess_connect_good); 1085 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1086 return(ctx->stats.sess_connect_renegotiate); 1087 case SSL_CTRL_SESS_ACCEPT: 1088 return(ctx->stats.sess_accept); 1089 case SSL_CTRL_SESS_ACCEPT_GOOD: 1090 return(ctx->stats.sess_accept_good); 1091 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1092 return(ctx->stats.sess_accept_renegotiate); 1093 case SSL_CTRL_SESS_HIT: 1094 return(ctx->stats.sess_hit); 1095 case SSL_CTRL_SESS_CB_HIT: 1096 return(ctx->stats.sess_cb_hit); 1097 case SSL_CTRL_SESS_MISSES: 1098 return(ctx->stats.sess_miss); 1099 case SSL_CTRL_SESS_TIMEOUTS: 1100 return(ctx->stats.sess_timeout); 1101 case SSL_CTRL_SESS_CACHE_FULL: 1102 return(ctx->stats.sess_cache_full); 1103 case SSL_CTRL_OPTIONS: 1104 return(ctx->options|=larg); 1105 case SSL_CTRL_CLEAR_OPTIONS: 1106 return(ctx->options&=~larg); 1107 case SSL_CTRL_MODE: 1108 return(ctx->mode|=larg); 1109 case SSL_CTRL_CLEAR_MODE: 1110 return(ctx->mode&=~larg); 1111 default: 1112 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1113 } 1114 } 1115 1116long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1117 { 1118 switch(cmd) 1119 { 1120 case SSL_CTRL_SET_MSG_CALLBACK: 1121 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1122 return 1; 1123 1124 default: 1125 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1126 } 1127 } 1128 1129int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1130 { 1131 long l; 1132 1133 l=a->id-b->id; 1134 if (l == 0L) 1135 return(0); 1136 else 1137 return((l > 0)?1:-1); 1138 } 1139 1140int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1141 const SSL_CIPHER * const *bp) 1142 { 1143 long l; 1144 1145 l=(*ap)->id-(*bp)->id; 1146 if (l == 0L) 1147 return(0); 1148 else 1149 return((l > 0)?1:-1); 1150 } 1151 1152/** return a STACK of the ciphers available for the SSL and in order of 1153 * preference */ 1154STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1155 { 1156 if (s != NULL) 1157 { 1158 if (s->cipher_list != NULL) 1159 { 1160 return(s->cipher_list); 1161 } 1162 else if ((s->ctx != NULL) && 1163 (s->ctx->cipher_list != NULL)) 1164 { 1165 return(s->ctx->cipher_list); 1166 } 1167 } 1168 return(NULL); 1169 } 1170 1171/** return a STACK of the ciphers available for the SSL and in order of 1172 * algorithm id */ 1173STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1174 { 1175 if (s != NULL) 1176 { 1177 if (s->cipher_list_by_id != NULL) 1178 { 1179 return(s->cipher_list_by_id); 1180 } 1181 else if ((s->ctx != NULL) && 1182 (s->ctx->cipher_list_by_id != NULL)) 1183 { 1184 return(s->ctx->cipher_list_by_id); 1185 } 1186 } 1187 return(NULL); 1188 } 1189 1190/** The old interface to get the same thing as SSL_get_ciphers() */ 1191const char *SSL_get_cipher_list(const SSL *s,int n) 1192 { 1193 SSL_CIPHER *c; 1194 STACK_OF(SSL_CIPHER) *sk; 1195 1196 if (s == NULL) return(NULL); 1197 sk=SSL_get_ciphers(s); 1198 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1199 return(NULL); 1200 c=sk_SSL_CIPHER_value(sk,n); 1201 if (c == NULL) return(NULL); 1202 return(c->name); 1203 } 1204 1205/** specify the ciphers to be used by default by the SSL_CTX */ 1206int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1207 { 1208 STACK_OF(SSL_CIPHER) *sk; 1209 1210 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1211 &ctx->cipher_list_by_id,str); 1212 /* ssl_create_cipher_list may return an empty stack if it 1213 * was unable to find a cipher matching the given rule string 1214 * (for example if the rule string specifies a cipher which 1215 * has been disabled). This is not an error as far as 1216 * ssl_create_cipher_list is concerned, and hence 1217 * ctx->cipher_list and ctx->cipher_list_by_id has been 1218 * updated. */ 1219 if (sk == NULL) 1220 return 0; 1221 else if (sk_SSL_CIPHER_num(sk) == 0) 1222 { 1223 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1224 return 0; 1225 } 1226 return 1; 1227 } 1228 1229/** specify the ciphers to be used by the SSL */ 1230int SSL_set_cipher_list(SSL *s,const char *str) 1231 { 1232 STACK_OF(SSL_CIPHER) *sk; 1233 1234 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1235 &s->cipher_list_by_id,str); 1236 /* see comment in SSL_CTX_set_cipher_list */ 1237 if (sk == NULL) 1238 return 0; 1239 else if (sk_SSL_CIPHER_num(sk) == 0) 1240 { 1241 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1242 return 0; 1243 } 1244 return 1; 1245 } 1246 1247/* works well for SSLv2, not so good for SSLv3 */ 1248char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1249 { 1250 char *p; 1251 STACK_OF(SSL_CIPHER) *sk; 1252 SSL_CIPHER *c; 1253 int i; 1254 1255 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1256 (len < 2)) 1257 return(NULL); 1258 1259 p=buf; 1260 sk=s->session->ciphers; 1261 1262 if (sk_SSL_CIPHER_num(sk) == 0) 1263 return NULL; 1264 1265 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1266 { 1267 int n; 1268 1269 c=sk_SSL_CIPHER_value(sk,i); 1270 n=strlen(c->name); 1271 if (n+1 > len) 1272 { 1273 if (p != buf) 1274 --p; 1275 *p='\0'; 1276 return buf; 1277 } 1278 strcpy(p,c->name); 1279 p+=n; 1280 *(p++)=':'; 1281 len-=n+1; 1282 } 1283 p[-1]='\0'; 1284 return(buf); 1285 } 1286 1287int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1288 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1289 { 1290 int i,j=0; 1291 SSL_CIPHER *c; 1292 unsigned char *q; 1293#ifndef OPENSSL_NO_KRB5 1294 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1295#endif /* OPENSSL_NO_KRB5 */ 1296 1297 if (sk == NULL) return(0); 1298 q=p; 1299 if (put_cb == NULL) 1300 put_cb = s->method->put_cipher_by_char; 1301 1302 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1303 { 1304 c=sk_SSL_CIPHER_value(sk,i); 1305#ifndef OPENSSL_NO_KRB5 1306 if ((c->algorithms & SSL_KRB5) && nokrb5) 1307 continue; 1308#endif /* OPENSSL_NO_KRB5 */ 1309 1310 j = put_cb(c,p); 1311 p+=j; 1312 } 1313 /* If p == q, no ciphers; caller indicates an error. 1314 * Otherwise, add applicable SCSVs. */ 1315 if (p != q) 1316 { 1317 if (!s->new_session) 1318 { 1319 static SSL_CIPHER scsv = 1320 { 1321 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 1322 }; 1323 j = put_cb(&scsv,p); 1324 p+=j; 1325#ifdef OPENSSL_RI_DEBUG 1326 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n"); 1327#endif 1328 } 1329 1330 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) 1331 { 1332 static SSL_CIPHER scsv = 1333 { 1334 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 1335 }; 1336 j = put_cb(&scsv,p); 1337 p+=j; 1338 } 1339 } 1340 1341 return(p-q); 1342 } 1343 1344STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1345 STACK_OF(SSL_CIPHER) **skp) 1346 { 1347 SSL_CIPHER *c; 1348 STACK_OF(SSL_CIPHER) *sk; 1349 int i,n; 1350 1351 if (s->s3) 1352 s->s3->send_connection_binding = 0; 1353 1354 n=ssl_put_cipher_by_char(s,NULL,NULL); 1355 if (n == 0 || (num%n) != 0) 1356 { 1357 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1358 return(NULL); 1359 } 1360 if ((skp == NULL) || (*skp == NULL)) 1361 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1362 else 1363 { 1364 sk= *skp; 1365 sk_SSL_CIPHER_zero(sk); 1366 } 1367 1368 for (i=0; i<num; i+=n) 1369 { 1370 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */ 1371 if (s->s3 && (n != 3 || !p[0]) && 1372 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) && 1373 (p[n-1] == (SSL3_CK_SCSV & 0xff))) 1374 { 1375 /* SCSV fatal if renegotiating */ 1376 if (s->new_session) 1377 { 1378 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1379 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1380 goto err; 1381 } 1382 s->s3->send_connection_binding = 1; 1383 p += n; 1384#ifdef OPENSSL_RI_DEBUG 1385 fprintf(stderr, "SCSV received by server\n"); 1386#endif 1387 continue; 1388 } 1389 1390 /* Check for TLS_FALLBACK_SCSV */ 1391 if ((n != 3 || !p[0]) && 1392 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) && 1393 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) 1394 { 1395 /* The SCSV indicates that the client previously tried a higher version. 1396 * Fail if the current version is an unexpected downgrade. */ 1397 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) 1398 { 1399 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK); 1400 if (s->s3) 1401 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK); 1402 goto err; 1403 } 1404 p += n; 1405 continue; 1406 } 1407 1408 c=ssl_get_cipher_by_char(s,p); 1409 p+=n; 1410 if (c != NULL) 1411 { 1412 if (!sk_SSL_CIPHER_push(sk,c)) 1413 { 1414 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1415 goto err; 1416 } 1417 } 1418 } 1419 1420 if (skp != NULL) 1421 *skp=sk; 1422 return(sk); 1423err: 1424 if ((skp == NULL) || (*skp == NULL)) 1425 sk_SSL_CIPHER_free(sk); 1426 return(NULL); 1427 } 1428 1429#ifndef OPENSSL_NO_TLSEXT 1430/** return a servername extension value if provided in Client Hello, or NULL. 1431 * So far, only host_name types are defined (RFC 3546). 1432 */ 1433 1434const char *SSL_get_servername(const SSL *s, const int type) 1435 { 1436 if (type != TLSEXT_NAMETYPE_host_name) 1437 return NULL; 1438 1439 return s->session && !s->tlsext_hostname ? 1440 s->session->tlsext_hostname : 1441 s->tlsext_hostname; 1442 } 1443 1444int SSL_get_servername_type(const SSL *s) 1445 { 1446 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 1447 return TLSEXT_NAMETYPE_host_name; 1448 return -1; 1449 } 1450#endif 1451 1452unsigned long SSL_SESSION_hash(const SSL_SESSION *a) 1453 { 1454 unsigned long l; 1455 1456 l=(unsigned long) 1457 ((unsigned int) a->session_id[0] )| 1458 ((unsigned int) a->session_id[1]<< 8L)| 1459 ((unsigned long)a->session_id[2]<<16L)| 1460 ((unsigned long)a->session_id[3]<<24L); 1461 return(l); 1462 } 1463 1464/* NB: If this function (or indeed the hash function which uses a sort of 1465 * coarser function than this one) is changed, ensure 1466 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1467 * able to construct an SSL_SESSION that will collide with any existing session 1468 * with a matching session ID. */ 1469int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1470 { 1471 if (a->ssl_version != b->ssl_version) 1472 return(1); 1473 if (a->session_id_length != b->session_id_length) 1474 return(1); 1475 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1476 } 1477 1478/* These wrapper functions should remain rather than redeclaring 1479 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1480 * variable. The reason is that the functions aren't static, they're exposed via 1481 * ssl.h. */ 1482static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *) 1483static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *) 1484 1485SSL_CTX *SSL_CTX_new(SSL_METHOD *meth) 1486 { 1487 SSL_CTX *ret=NULL; 1488 1489 if (meth == NULL) 1490 { 1491 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1492 return(NULL); 1493 } 1494 1495#ifdef OPENSSL_FIPS 1496 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1497 { 1498 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1499 return NULL; 1500 } 1501#endif 1502 1503 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1504 { 1505 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1506 goto err; 1507 } 1508 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1509 if (ret == NULL) 1510 goto err; 1511 1512 memset(ret,0,sizeof(SSL_CTX)); 1513 1514 ret->method=meth; 1515 1516 ret->cert_store=NULL; 1517 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1518 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1519 ret->session_cache_head=NULL; 1520 ret->session_cache_tail=NULL; 1521 1522 /* We take the system default */ 1523 ret->session_timeout=meth->get_timeout(); 1524 1525 ret->new_session_cb=0; 1526 ret->remove_session_cb=0; 1527 ret->get_session_cb=0; 1528 ret->generate_session_id=0; 1529 1530 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1531 1532 ret->references=1; 1533 ret->quiet_shutdown=0; 1534 1535/* ret->cipher=NULL;*/ 1536/* ret->s2->challenge=NULL; 1537 ret->master_key=NULL; 1538 ret->key_arg=NULL; 1539 ret->s2->conn_id=NULL; */ 1540 1541 ret->info_callback=NULL; 1542 1543 ret->app_verify_callback=0; 1544 ret->app_verify_arg=NULL; 1545 1546 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1547 ret->read_ahead=0; 1548 ret->msg_callback=0; 1549 ret->msg_callback_arg=NULL; 1550 ret->verify_mode=SSL_VERIFY_NONE; 1551#if 0 1552 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1553#endif 1554 ret->sid_ctx_length=0; 1555 ret->default_verify_callback=NULL; 1556 if ((ret->cert=ssl_cert_new()) == NULL) 1557 goto err; 1558 1559 ret->default_passwd_callback=0; 1560 ret->default_passwd_callback_userdata=NULL; 1561 ret->client_cert_cb=0; 1562 ret->app_gen_cookie_cb=0; 1563 ret->app_verify_cookie_cb=0; 1564 1565 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash), 1566 LHASH_COMP_FN(SSL_SESSION_cmp)); 1567 if (ret->sessions == NULL) goto err; 1568 ret->cert_store=X509_STORE_new(); 1569 if (ret->cert_store == NULL) goto err; 1570 1571 ssl_create_cipher_list(ret->method, 1572 &ret->cipher_list,&ret->cipher_list_by_id, 1573 SSL_DEFAULT_CIPHER_LIST); 1574 if (ret->cipher_list == NULL 1575 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1576 { 1577 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1578 goto err2; 1579 } 1580 1581 ret->param = X509_VERIFY_PARAM_new(); 1582 if (!ret->param) 1583 goto err; 1584 1585 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1586 { 1587 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1588 goto err2; 1589 } 1590 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1591 { 1592 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1593 goto err2; 1594 } 1595 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1596 { 1597 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1598 goto err2; 1599 } 1600 1601 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1602 goto err; 1603 1604 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1605 1606 ret->extra_certs=NULL; 1607 /* No compression for DTLS */ 1608 if (meth->version != DTLS1_VERSION) 1609 ret->comp_methods=SSL_COMP_get_compression_methods(); 1610 1611#ifndef OPENSSL_NO_TLSEXT 1612 ret->tlsext_servername_callback = 0; 1613 ret->tlsext_servername_arg = NULL; 1614 /* Setup RFC4507 ticket keys */ 1615 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0) 1616 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0) 1617 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0)) 1618 ret->options |= SSL_OP_NO_TICKET; 1619 1620 ret->tlsext_status_cb = 0; 1621 ret->tlsext_status_arg = NULL; 1622 1623#endif 1624 1625#ifndef OPENSSL_NO_ENGINE 1626 ret->client_cert_engine = NULL; 1627#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1628#define eng_strx(x) #x 1629#define eng_str(x) eng_strx(x) 1630 /* Use specific client engine automatically... ignore errors */ 1631 { 1632 ENGINE *eng; 1633 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1634 if (!eng) 1635 { 1636 ERR_clear_error(); 1637 ENGINE_load_builtin_engines(); 1638 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1639 } 1640 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1641 ERR_clear_error(); 1642 } 1643#endif 1644#endif 1645 /* Default is to connect to non-RI servers. When RI is more widely 1646 * deployed might change this. 1647 */ 1648 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1649 1650 return(ret); 1651err: 1652 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1653err2: 1654 if (ret != NULL) SSL_CTX_free(ret); 1655 return(NULL); 1656 } 1657 1658#if 0 1659static void SSL_COMP_free(SSL_COMP *comp) 1660 { OPENSSL_free(comp); } 1661#endif 1662 1663void SSL_CTX_free(SSL_CTX *a) 1664 { 1665 int i; 1666 1667 if (a == NULL) return; 1668 1669 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1670#ifdef REF_PRINT 1671 REF_PRINT("SSL_CTX",a); 1672#endif 1673 if (i > 0) return; 1674#ifdef REF_CHECK 1675 if (i < 0) 1676 { 1677 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1678 abort(); /* ok */ 1679 } 1680#endif 1681 1682 if (a->param) 1683 X509_VERIFY_PARAM_free(a->param); 1684 1685 /* 1686 * Free internal session cache. However: the remove_cb() may reference 1687 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1688 * after the sessions were flushed. 1689 * As the ex_data handling routines might also touch the session cache, 1690 * the most secure solution seems to be: empty (flush) the cache, then 1691 * free ex_data, then finally free the cache. 1692 * (See ticket [openssl.org #212].) 1693 */ 1694 if (a->sessions != NULL) 1695 SSL_CTX_flush_sessions(a,0); 1696 1697 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1698 1699 if (a->sessions != NULL) 1700 lh_free(a->sessions); 1701 1702 if (a->cert_store != NULL) 1703 X509_STORE_free(a->cert_store); 1704 if (a->cipher_list != NULL) 1705 sk_SSL_CIPHER_free(a->cipher_list); 1706 if (a->cipher_list_by_id != NULL) 1707 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1708 if (a->cert != NULL) 1709 ssl_cert_free(a->cert); 1710 if (a->client_CA != NULL) 1711 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1712 if (a->extra_certs != NULL) 1713 sk_X509_pop_free(a->extra_certs,X509_free); 1714#if 0 /* This should never be done, since it removes a global database */ 1715 if (a->comp_methods != NULL) 1716 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1717#else 1718 a->comp_methods = NULL; 1719#endif 1720#ifndef OPENSSL_NO_ENGINE 1721 if (a->client_cert_engine) 1722 ENGINE_finish(a->client_cert_engine); 1723#endif 1724 OPENSSL_free(a); 1725 } 1726 1727void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1728 { 1729 ctx->default_passwd_callback=cb; 1730 } 1731 1732void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1733 { 1734 ctx->default_passwd_callback_userdata=u; 1735 } 1736 1737void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1738 { 1739 ctx->app_verify_callback=cb; 1740 ctx->app_verify_arg=arg; 1741 } 1742 1743void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1744 { 1745 ctx->verify_mode=mode; 1746 ctx->default_verify_callback=cb; 1747 } 1748 1749void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1750 { 1751 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 1752 } 1753 1754void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher) 1755 { 1756 CERT_PKEY *cpk; 1757 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1758 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1759 int rsa_tmp_export,dh_tmp_export,kl; 1760 unsigned long mask,emask; 1761 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size; 1762#ifndef OPENSSL_NO_ECDH 1763 int have_ecdh_tmp; 1764#endif 1765 X509 *x = NULL; 1766 EVP_PKEY *ecc_pkey = NULL; 1767 int signature_nid = 0; 1768 1769 if (c == NULL) return; 1770 1771 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1772 1773#ifndef OPENSSL_NO_RSA 1774 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1775 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1776 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1777#else 1778 rsa_tmp=rsa_tmp_export=0; 1779#endif 1780#ifndef OPENSSL_NO_DH 1781 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1782 dh_tmp_export=(c->dh_tmp_cb != NULL || 1783 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1784#else 1785 dh_tmp=dh_tmp_export=0; 1786#endif 1787 1788#ifndef OPENSSL_NO_ECDH 1789 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL); 1790#endif 1791 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1792 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1793 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1794 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1795 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1796 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1797 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1798 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1799 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1800 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1801 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1802/* FIX THIS EAY EAY EAY */ 1803 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1804 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1805 cpk= &(c->pkeys[SSL_PKEY_ECC]); 1806 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL); 1807 mask=0; 1808 emask=0; 1809 1810#ifdef CIPHER_DEBUG 1811 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1812 rsa_tmp,rsa_tmp_export,dh_tmp, 1813 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1814#endif 1815 1816 if (rsa_enc || (rsa_tmp && rsa_sign)) 1817 mask|=SSL_kRSA; 1818 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1819 emask|=SSL_kRSA; 1820 1821#if 0 1822 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1823 if ( (dh_tmp || dh_rsa || dh_dsa) && 1824 (rsa_enc || rsa_sign || dsa_sign)) 1825 mask|=SSL_kEDH; 1826 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1827 (rsa_enc || rsa_sign || dsa_sign)) 1828 emask|=SSL_kEDH; 1829#endif 1830 1831 if (dh_tmp_export) 1832 emask|=SSL_kEDH; 1833 1834 if (dh_tmp) 1835 mask|=SSL_kEDH; 1836 1837 if (dh_rsa) mask|=SSL_kDHr; 1838 if (dh_rsa_export) emask|=SSL_kDHr; 1839 1840 if (dh_dsa) mask|=SSL_kDHd; 1841 if (dh_dsa_export) emask|=SSL_kDHd; 1842 1843 if (rsa_enc || rsa_sign) 1844 { 1845 mask|=SSL_aRSA; 1846 emask|=SSL_aRSA; 1847 } 1848 1849 if (dsa_sign) 1850 { 1851 mask|=SSL_aDSS; 1852 emask|=SSL_aDSS; 1853 } 1854 1855 mask|=SSL_aNULL; 1856 emask|=SSL_aNULL; 1857 1858#ifndef OPENSSL_NO_KRB5 1859 mask|=SSL_kKRB5|SSL_aKRB5; 1860 emask|=SSL_kKRB5|SSL_aKRB5; 1861#endif 1862 1863 /* An ECC certificate may be usable for ECDH and/or 1864 * ECDSA cipher suites depending on the key usage extension. 1865 */ 1866 if (have_ecc_cert) 1867 { 1868 /* This call populates extension flags (ex_flags) */ 1869 x = (c->pkeys[SSL_PKEY_ECC]).x509; 1870 X509_check_purpose(x, -1, 0); 1871 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1872 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1; 1873 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ? 1874 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1; 1875 ecc_pkey = X509_get_pubkey(x); 1876 ecc_pkey_size = (ecc_pkey != NULL) ? 1877 EVP_PKEY_bits(ecc_pkey) : 0; 1878 EVP_PKEY_free(ecc_pkey); 1879 if ((x->sig_alg) && (x->sig_alg->algorithm)) 1880 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 1881#ifndef OPENSSL_NO_ECDH 1882 if (ecdh_ok) 1883 { 1884 if ((signature_nid == NID_md5WithRSAEncryption) || 1885 (signature_nid == NID_md4WithRSAEncryption) || 1886 (signature_nid == NID_md2WithRSAEncryption)) 1887 { 1888 mask|=SSL_kECDH|SSL_aRSA; 1889 if (ecc_pkey_size <= 163) 1890 emask|=SSL_kECDH|SSL_aRSA; 1891 } 1892 if (signature_nid == NID_ecdsa_with_SHA1) 1893 { 1894 mask|=SSL_kECDH|SSL_aECDSA; 1895 if (ecc_pkey_size <= 163) 1896 emask|=SSL_kECDH|SSL_aECDSA; 1897 } 1898 } 1899#endif 1900#ifndef OPENSSL_NO_ECDSA 1901 if (ecdsa_ok) 1902 { 1903 mask|=SSL_aECDSA; 1904 emask|=SSL_aECDSA; 1905 } 1906#endif 1907 } 1908 1909#ifndef OPENSSL_NO_ECDH 1910 if (have_ecdh_tmp) 1911 { 1912 mask|=SSL_kECDHE; 1913 emask|=SSL_kECDHE; 1914 } 1915#endif 1916 c->mask=mask; 1917 c->export_mask=emask; 1918 c->valid=1; 1919 } 1920 1921/* This handy macro borrowed from crypto/x509v3/v3_purp.c */ 1922#define ku_reject(x, usage) \ 1923 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) 1924 1925int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs) 1926 { 1927 unsigned long alg = cs->algorithms; 1928 EVP_PKEY *pkey = NULL; 1929 int keysize = 0; 1930 int signature_nid = 0; 1931 1932 if (SSL_C_IS_EXPORT(cs)) 1933 { 1934 /* ECDH key length in export ciphers must be <= 163 bits */ 1935 pkey = X509_get_pubkey(x); 1936 if (pkey == NULL) return 0; 1937 keysize = EVP_PKEY_bits(pkey); 1938 EVP_PKEY_free(pkey); 1939 if (keysize > 163) return 0; 1940 } 1941 1942 /* This call populates the ex_flags field correctly */ 1943 X509_check_purpose(x, -1, 0); 1944 if ((x->sig_alg) && (x->sig_alg->algorithm)) 1945 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm); 1946 if (alg & SSL_kECDH) 1947 { 1948 /* key usage, if present, must allow key agreement */ 1949 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) 1950 { 1951 return 0; 1952 } 1953 if (alg & SSL_aECDSA) 1954 { 1955 /* signature alg must be ECDSA */ 1956 if (signature_nid != NID_ecdsa_with_SHA1) 1957 { 1958 return 0; 1959 } 1960 } 1961 if (alg & SSL_aRSA) 1962 { 1963 /* signature alg must be RSA */ 1964 if ((signature_nid != NID_md5WithRSAEncryption) && 1965 (signature_nid != NID_md4WithRSAEncryption) && 1966 (signature_nid != NID_md2WithRSAEncryption)) 1967 { 1968 return 0; 1969 } 1970 } 1971 } 1972 else if (alg & SSL_aECDSA) 1973 { 1974 /* key usage, if present, must allow signing */ 1975 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) 1976 { 1977 return 0; 1978 } 1979 } 1980 1981 return 1; /* all checks are ok */ 1982 } 1983 1984/* THIS NEEDS CLEANING UP */ 1985CERT_PKEY *ssl_get_server_send_pkey(const SSL *s) 1986 { 1987 unsigned long alg,kalg; 1988 CERT *c; 1989 int i; 1990 1991 c=s->cert; 1992 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 1993 alg=s->s3->tmp.new_cipher->algorithms; 1994 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK); 1995 1996 if (kalg & SSL_kECDH) 1997 { 1998 /* we don't need to look at SSL_kECDHE 1999 * since no certificate is needed for 2000 * anon ECDH and for authenticated 2001 * ECDHE, the check for the auth 2002 * algorithm will set i correctly 2003 * NOTE: For ECDH-RSA, we need an ECC 2004 * not an RSA cert but for ECDHE-RSA 2005 * we need an RSA cert. Placing the 2006 * checks for SSL_kECDH before RSA 2007 * checks ensures the correct cert is chosen. 2008 */ 2009 i=SSL_PKEY_ECC; 2010 } 2011 else if (kalg & SSL_aECDSA) 2012 { 2013 i=SSL_PKEY_ECC; 2014 } 2015 else if (kalg & SSL_kDHr) 2016 i=SSL_PKEY_DH_RSA; 2017 else if (kalg & SSL_kDHd) 2018 i=SSL_PKEY_DH_DSA; 2019 else if (kalg & SSL_aDSS) 2020 i=SSL_PKEY_DSA_SIGN; 2021 else if (kalg & SSL_aRSA) 2022 { 2023 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2024 i=SSL_PKEY_RSA_SIGN; 2025 else 2026 i=SSL_PKEY_RSA_ENC; 2027 } 2028 else if (kalg & SSL_aKRB5) 2029 { 2030 /* VRS something else here? */ 2031 return(NULL); 2032 } 2033 else /* if (kalg & SSL_aNULL) */ 2034 { 2035 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR); 2036 return(NULL); 2037 } 2038 2039 return c->pkeys + i; 2040 } 2041 2042X509 *ssl_get_server_send_cert(const SSL *s) 2043 { 2044 CERT_PKEY *cpk; 2045 cpk = ssl_get_server_send_pkey(s); 2046 if (!cpk) 2047 return NULL; 2048 return cpk->x509; 2049 } 2050 2051EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher) 2052 { 2053 unsigned long alg; 2054 CERT *c; 2055 2056 alg=cipher->algorithms; 2057 c=s->cert; 2058 2059 if ((alg & SSL_aDSS) && 2060 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 2061 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 2062 else if (alg & SSL_aRSA) 2063 { 2064 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2065 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 2066 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2067 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 2068 else 2069 return(NULL); 2070 } 2071 else if ((alg & SSL_aECDSA) && 2072 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2073 return(c->pkeys[SSL_PKEY_ECC].privatekey); 2074 else /* if (alg & SSL_aNULL) */ 2075 { 2076 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 2077 return(NULL); 2078 } 2079 } 2080 2081void ssl_update_cache(SSL *s,int mode) 2082 { 2083 int i; 2084 2085 /* If the session_id_length is 0, we are not supposed to cache it, 2086 * and it would be rather hard to do anyway :-) */ 2087 if (s->session->session_id_length == 0) return; 2088 2089 i=s->ctx->session_cache_mode; 2090 if ((i & mode) && (!s->hit) 2091 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2092 || SSL_CTX_add_session(s->ctx,s->session)) 2093 && (s->ctx->new_session_cb != NULL)) 2094 { 2095 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 2096 if (!s->ctx->new_session_cb(s,s->session)) 2097 SSL_SESSION_free(s->session); 2098 } 2099 2100 /* auto flush every 255 connections */ 2101 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2102 ((i & mode) == mode)) 2103 { 2104 if ( (((mode & SSL_SESS_CACHE_CLIENT) 2105 ?s->ctx->stats.sess_connect_good 2106 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff) 2107 { 2108 SSL_CTX_flush_sessions(s->ctx,(unsigned long)time(NULL)); 2109 } 2110 } 2111 } 2112 2113SSL_METHOD *SSL_get_ssl_method(SSL *s) 2114 { 2115 return(s->method); 2116 } 2117 2118int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth) 2119 { 2120 int conn= -1; 2121 int ret=1; 2122 2123 if (s->method != meth) 2124 { 2125 if (s->handshake_func != NULL) 2126 conn=(s->handshake_func == s->method->ssl_connect); 2127 2128 if (s->method->version == meth->version) 2129 s->method=meth; 2130 else 2131 { 2132 s->method->ssl_free(s); 2133 s->method=meth; 2134 ret=s->method->ssl_new(s); 2135 } 2136 2137 if (conn == 1) 2138 s->handshake_func=meth->ssl_connect; 2139 else if (conn == 0) 2140 s->handshake_func=meth->ssl_accept; 2141 } 2142 return(ret); 2143 } 2144 2145int SSL_get_error(const SSL *s,int i) 2146 { 2147 int reason; 2148 unsigned long l; 2149 BIO *bio; 2150 2151 if (i > 0) return(SSL_ERROR_NONE); 2152 2153 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2154 * etc, where we do encode the error */ 2155 if ((l=ERR_peek_error()) != 0) 2156 { 2157 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2158 return(SSL_ERROR_SYSCALL); 2159 else 2160 return(SSL_ERROR_SSL); 2161 } 2162 2163 if ((i < 0) && SSL_want_read(s)) 2164 { 2165 bio=SSL_get_rbio(s); 2166 if (BIO_should_read(bio)) 2167 return(SSL_ERROR_WANT_READ); 2168 else if (BIO_should_write(bio)) 2169 /* This one doesn't make too much sense ... We never try 2170 * to write to the rbio, and an application program where 2171 * rbio and wbio are separate couldn't even know what it 2172 * should wait for. 2173 * However if we ever set s->rwstate incorrectly 2174 * (so that we have SSL_want_read(s) instead of 2175 * SSL_want_write(s)) and rbio and wbio *are* the same, 2176 * this test works around that bug; so it might be safer 2177 * to keep it. */ 2178 return(SSL_ERROR_WANT_WRITE); 2179 else if (BIO_should_io_special(bio)) 2180 { 2181 reason=BIO_get_retry_reason(bio); 2182 if (reason == BIO_RR_CONNECT) 2183 return(SSL_ERROR_WANT_CONNECT); 2184 else if (reason == BIO_RR_ACCEPT) 2185 return(SSL_ERROR_WANT_ACCEPT); 2186 else 2187 return(SSL_ERROR_SYSCALL); /* unknown */ 2188 } 2189 } 2190 2191 if ((i < 0) && SSL_want_write(s)) 2192 { 2193 bio=SSL_get_wbio(s); 2194 if (BIO_should_write(bio)) 2195 return(SSL_ERROR_WANT_WRITE); 2196 else if (BIO_should_read(bio)) 2197 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 2198 return(SSL_ERROR_WANT_READ); 2199 else if (BIO_should_io_special(bio)) 2200 { 2201 reason=BIO_get_retry_reason(bio); 2202 if (reason == BIO_RR_CONNECT) 2203 return(SSL_ERROR_WANT_CONNECT); 2204 else if (reason == BIO_RR_ACCEPT) 2205 return(SSL_ERROR_WANT_ACCEPT); 2206 else 2207 return(SSL_ERROR_SYSCALL); 2208 } 2209 } 2210 if ((i < 0) && SSL_want_x509_lookup(s)) 2211 { 2212 return(SSL_ERROR_WANT_X509_LOOKUP); 2213 } 2214 2215 if (i == 0) 2216 { 2217 if (s->version == SSL2_VERSION) 2218 { 2219 /* assume it is the socket being closed */ 2220 return(SSL_ERROR_ZERO_RETURN); 2221 } 2222 else 2223 { 2224 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 2225 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2226 return(SSL_ERROR_ZERO_RETURN); 2227 } 2228 } 2229 return(SSL_ERROR_SYSCALL); 2230 } 2231 2232int SSL_do_handshake(SSL *s) 2233 { 2234 int ret=1; 2235 2236 if (s->handshake_func == NULL) 2237 { 2238 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 2239 return(-1); 2240 } 2241 2242 s->method->ssl_renegotiate_check(s); 2243 2244 if (SSL_in_init(s) || SSL_in_before(s)) 2245 { 2246 ret=s->handshake_func(s); 2247 } 2248 return(ret); 2249 } 2250 2251/* For the next 2 functions, SSL_clear() sets shutdown and so 2252 * one of these calls will reset it */ 2253void SSL_set_accept_state(SSL *s) 2254 { 2255 s->server=1; 2256 s->shutdown=0; 2257 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 2258 s->handshake_func=s->method->ssl_accept; 2259 /* clear the current cipher */ 2260 ssl_clear_cipher_ctx(s); 2261 } 2262 2263void SSL_set_connect_state(SSL *s) 2264 { 2265 s->server=0; 2266 s->shutdown=0; 2267 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 2268 s->handshake_func=s->method->ssl_connect; 2269 /* clear the current cipher */ 2270 ssl_clear_cipher_ctx(s); 2271 } 2272 2273int ssl_undefined_function(SSL *s) 2274 { 2275 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2276 return(0); 2277 } 2278 2279int ssl_undefined_void_function(void) 2280 { 2281 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2282 return(0); 2283 } 2284 2285int ssl_undefined_const_function(const SSL *s) 2286 { 2287 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2288 return(0); 2289 } 2290 2291SSL_METHOD *ssl_bad_method(int ver) 2292 { 2293 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2294 return(NULL); 2295 } 2296 2297const char *SSL_get_version(const SSL *s) 2298 { 2299 if (s->version == TLS1_VERSION) 2300 return("TLSv1"); 2301 else if (s->version == SSL3_VERSION) 2302 return("SSLv3"); 2303 else if (s->version == SSL2_VERSION) 2304 return("SSLv2"); 2305 else 2306 return("unknown"); 2307 } 2308 2309SSL *SSL_dup(SSL *s) 2310 { 2311 STACK_OF(X509_NAME) *sk; 2312 X509_NAME *xn; 2313 SSL *ret; 2314 int i; 2315 2316 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2317 return(NULL); 2318 2319 ret->version = s->version; 2320 ret->type = s->type; 2321 ret->method = s->method; 2322 2323 if (s->session != NULL) 2324 { 2325 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2326 SSL_copy_session_id(ret,s); 2327 } 2328 else 2329 { 2330 /* No session has been established yet, so we have to expect 2331 * that s->cert or ret->cert will be changed later -- 2332 * they should not both point to the same object, 2333 * and thus we can't use SSL_copy_session_id. */ 2334 2335 ret->method->ssl_free(ret); 2336 ret->method = s->method; 2337 ret->method->ssl_new(ret); 2338 2339 if (s->cert != NULL) 2340 { 2341 if (ret->cert != NULL) 2342 { 2343 ssl_cert_free(ret->cert); 2344 } 2345 ret->cert = ssl_cert_dup(s->cert); 2346 if (ret->cert == NULL) 2347 goto err; 2348 } 2349 2350 SSL_set_session_id_context(ret, 2351 s->sid_ctx, s->sid_ctx_length); 2352 } 2353 2354 ret->options=s->options; 2355 ret->mode=s->mode; 2356 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 2357 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 2358 ret->msg_callback = s->msg_callback; 2359 ret->msg_callback_arg = s->msg_callback_arg; 2360 SSL_set_verify(ret,SSL_get_verify_mode(s), 2361 SSL_get_verify_callback(s)); 2362 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 2363 ret->generate_session_id = s->generate_session_id; 2364 2365 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 2366 2367 ret->debug=s->debug; 2368 2369 /* copy app data, a little dangerous perhaps */ 2370 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 2371 goto err; 2372 2373 /* setup rbio, and wbio */ 2374 if (s->rbio != NULL) 2375 { 2376 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2377 goto err; 2378 } 2379 if (s->wbio != NULL) 2380 { 2381 if (s->wbio != s->rbio) 2382 { 2383 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2384 goto err; 2385 } 2386 else 2387 ret->wbio=ret->rbio; 2388 } 2389 ret->rwstate = s->rwstate; 2390 ret->in_handshake = s->in_handshake; 2391 ret->handshake_func = s->handshake_func; 2392 ret->server = s->server; 2393 ret->new_session = s->new_session; 2394 ret->quiet_shutdown = s->quiet_shutdown; 2395 ret->shutdown=s->shutdown; 2396 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2397 ret->rstate=s->rstate; 2398 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2399 ret->hit=s->hit; 2400 2401 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2402 2403 /* dup the cipher_list and cipher_list_by_id stacks */ 2404 if (s->cipher_list != NULL) 2405 { 2406 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2407 goto err; 2408 } 2409 if (s->cipher_list_by_id != NULL) 2410 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2411 == NULL) 2412 goto err; 2413 2414 /* Dup the client_CA list */ 2415 if (s->client_CA != NULL) 2416 { 2417 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2418 ret->client_CA=sk; 2419 for (i=0; i<sk_X509_NAME_num(sk); i++) 2420 { 2421 xn=sk_X509_NAME_value(sk,i); 2422 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2423 { 2424 X509_NAME_free(xn); 2425 goto err; 2426 } 2427 } 2428 } 2429 2430 if (0) 2431 { 2432err: 2433 if (ret != NULL) SSL_free(ret); 2434 ret=NULL; 2435 } 2436 return(ret); 2437 } 2438 2439void ssl_clear_cipher_ctx(SSL *s) 2440 { 2441 if (s->enc_read_ctx != NULL) 2442 { 2443 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2444 OPENSSL_free(s->enc_read_ctx); 2445 s->enc_read_ctx=NULL; 2446 } 2447 if (s->enc_write_ctx != NULL) 2448 { 2449 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2450 OPENSSL_free(s->enc_write_ctx); 2451 s->enc_write_ctx=NULL; 2452 } 2453#ifndef OPENSSL_NO_COMP 2454 if (s->expand != NULL) 2455 { 2456 COMP_CTX_free(s->expand); 2457 s->expand=NULL; 2458 } 2459 if (s->compress != NULL) 2460 { 2461 COMP_CTX_free(s->compress); 2462 s->compress=NULL; 2463 } 2464#endif 2465 } 2466 2467/* Fix this function so that it takes an optional type parameter */ 2468X509 *SSL_get_certificate(const SSL *s) 2469 { 2470 if (s->cert != NULL) 2471 return(s->cert->key->x509); 2472 else 2473 return(NULL); 2474 } 2475 2476/* Fix this function so that it takes an optional type parameter */ 2477EVP_PKEY *SSL_get_privatekey(SSL *s) 2478 { 2479 if (s->cert != NULL) 2480 return(s->cert->key->privatekey); 2481 else 2482 return(NULL); 2483 } 2484 2485SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2486 { 2487 if ((s->session != NULL) && (s->session->cipher != NULL)) 2488 return(s->session->cipher); 2489 return(NULL); 2490 } 2491#ifdef OPENSSL_NO_COMP 2492const void *SSL_get_current_compression(SSL *s) 2493 { 2494 return NULL; 2495 } 2496const void *SSL_get_current_expansion(SSL *s) 2497 { 2498 return NULL; 2499 } 2500#else 2501 2502const COMP_METHOD *SSL_get_current_compression(SSL *s) 2503 { 2504 if (s->compress != NULL) 2505 return(s->compress->meth); 2506 return(NULL); 2507 } 2508 2509const COMP_METHOD *SSL_get_current_expansion(SSL *s) 2510 { 2511 if (s->expand != NULL) 2512 return(s->expand->meth); 2513 return(NULL); 2514 } 2515#endif 2516 2517int ssl_init_wbio_buffer(SSL *s,int push) 2518 { 2519 BIO *bbio; 2520 2521 if (s->bbio == NULL) 2522 { 2523 bbio=BIO_new(BIO_f_buffer()); 2524 if (bbio == NULL) return(0); 2525 s->bbio=bbio; 2526 } 2527 else 2528 { 2529 bbio=s->bbio; 2530 if (s->bbio == s->wbio) 2531 s->wbio=BIO_pop(s->wbio); 2532 } 2533 (void)BIO_reset(bbio); 2534/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2535 if (!BIO_set_read_buffer_size(bbio,1)) 2536 { 2537 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2538 return(0); 2539 } 2540 if (push) 2541 { 2542 if (s->wbio != bbio) 2543 s->wbio=BIO_push(bbio,s->wbio); 2544 } 2545 else 2546 { 2547 if (s->wbio == bbio) 2548 s->wbio=BIO_pop(bbio); 2549 } 2550 return(1); 2551 } 2552 2553void ssl_free_wbio_buffer(SSL *s) 2554 { 2555 if (s->bbio == NULL) return; 2556 2557 if (s->bbio == s->wbio) 2558 { 2559 /* remove buffering */ 2560 s->wbio=BIO_pop(s->wbio); 2561#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2562 assert(s->wbio != NULL); 2563#endif 2564 } 2565 BIO_free(s->bbio); 2566 s->bbio=NULL; 2567 } 2568 2569void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2570 { 2571 ctx->quiet_shutdown=mode; 2572 } 2573 2574int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2575 { 2576 return(ctx->quiet_shutdown); 2577 } 2578 2579void SSL_set_quiet_shutdown(SSL *s,int mode) 2580 { 2581 s->quiet_shutdown=mode; 2582 } 2583 2584int SSL_get_quiet_shutdown(const SSL *s) 2585 { 2586 return(s->quiet_shutdown); 2587 } 2588 2589void SSL_set_shutdown(SSL *s,int mode) 2590 { 2591 s->shutdown=mode; 2592 } 2593 2594int SSL_get_shutdown(const SSL *s) 2595 { 2596 return(s->shutdown); 2597 } 2598 2599int SSL_version(const SSL *s) 2600 { 2601 return(s->version); 2602 } 2603 2604SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2605 { 2606 return(ssl->ctx); 2607 } 2608 2609SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2610 { 2611 if (ssl->ctx == ctx) 2612 return ssl->ctx; 2613#ifndef OPENSSL_NO_TLSEXT 2614 if (ctx == NULL) 2615 ctx = ssl->initial_ctx; 2616#endif 2617 if (ssl->cert != NULL) 2618 ssl_cert_free(ssl->cert); 2619 ssl->cert = ssl_cert_dup(ctx->cert); 2620 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 2621 if (ssl->ctx != NULL) 2622 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2623 ssl->ctx = ctx; 2624 return(ssl->ctx); 2625 } 2626 2627#ifndef OPENSSL_NO_STDIO 2628int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2629 { 2630 return(X509_STORE_set_default_paths(ctx->cert_store)); 2631 } 2632 2633int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2634 const char *CApath) 2635 { 2636 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2637 } 2638#endif 2639 2640void SSL_set_info_callback(SSL *ssl, 2641 void (*cb)(const SSL *ssl,int type,int val)) 2642 { 2643 ssl->info_callback=cb; 2644 } 2645 2646/* One compiler (Diab DCC) doesn't like argument names in returned 2647 function pointer. */ 2648void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/) 2649 { 2650 return ssl->info_callback; 2651 } 2652 2653int SSL_state(const SSL *ssl) 2654 { 2655 return(ssl->state); 2656 } 2657 2658void SSL_set_verify_result(SSL *ssl,long arg) 2659 { 2660 ssl->verify_result=arg; 2661 } 2662 2663long SSL_get_verify_result(const SSL *ssl) 2664 { 2665 return(ssl->verify_result); 2666 } 2667 2668int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2669 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2670 { 2671 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2672 new_func, dup_func, free_func); 2673 } 2674 2675int SSL_set_ex_data(SSL *s,int idx,void *arg) 2676 { 2677 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2678 } 2679 2680void *SSL_get_ex_data(const SSL *s,int idx) 2681 { 2682 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2683 } 2684 2685int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2686 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2687 { 2688 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2689 new_func, dup_func, free_func); 2690 } 2691 2692int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2693 { 2694 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2695 } 2696 2697void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 2698 { 2699 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2700 } 2701 2702int ssl_ok(SSL *s) 2703 { 2704 return(1); 2705 } 2706 2707X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2708 { 2709 return(ctx->cert_store); 2710 } 2711 2712void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2713 { 2714 if (ctx->cert_store != NULL) 2715 X509_STORE_free(ctx->cert_store); 2716 ctx->cert_store=store; 2717 } 2718 2719int SSL_want(const SSL *s) 2720 { 2721 return(s->rwstate); 2722 } 2723 2724/*! 2725 * \brief Set the callback for generating temporary RSA keys. 2726 * \param ctx the SSL context. 2727 * \param cb the callback 2728 */ 2729 2730#ifndef OPENSSL_NO_RSA 2731void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2732 int is_export, 2733 int keylength)) 2734 { 2735 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2736 } 2737 2738void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2739 int is_export, 2740 int keylength)) 2741 { 2742 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2743 } 2744#endif 2745 2746#ifdef DOXYGEN 2747/*! 2748 * \brief The RSA temporary key callback function. 2749 * \param ssl the SSL session. 2750 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2751 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2752 * of the required key in bits. 2753 * \return the temporary RSA key. 2754 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2755 */ 2756 2757RSA *cb(SSL *ssl,int is_export,int keylength) 2758 {} 2759#endif 2760 2761/*! 2762 * \brief Set the callback for generating temporary DH keys. 2763 * \param ctx the SSL context. 2764 * \param dh the callback 2765 */ 2766 2767#ifndef OPENSSL_NO_DH 2768void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2769 int keylength)) 2770 { 2771 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2772 } 2773 2774void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2775 int keylength)) 2776 { 2777 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2778 } 2779#endif 2780 2781#ifndef OPENSSL_NO_ECDH 2782void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2783 int keylength)) 2784 { 2785 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2786 } 2787 2788void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export, 2789 int keylength)) 2790 { 2791 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 2792 } 2793#endif 2794 2795 2796void 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)) 2797 { 2798 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2799 } 2800void 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)) 2801 { 2802 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 2803 } 2804 2805 2806 2807#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 2808#include "../crypto/bio/bss_file.c" 2809#endif 2810 2811IMPLEMENT_STACK_OF(SSL_CIPHER) 2812IMPLEMENT_STACK_OF(SSL_COMP) 2813