ssl_lib.c revision 111147
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 */ 113 114 115#ifdef REF_CHECK 116# include <assert.h> 117#endif 118#include <stdio.h> 119#include "ssl_locl.h" 120#include "kssl_lcl.h" 121#include <openssl/objects.h> 122#include <openssl/lhash.h> 123#include <openssl/x509v3.h> 124#include "cryptlib.h" 125 126const char *SSL_version_str=OPENSSL_VERSION_TEXT; 127 128OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={ 129 /* evil casts, but these functions are only called if there's a library bug */ 130 (int (*)(SSL *,int))ssl_undefined_function, 131 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 132 ssl_undefined_function, 133 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 134 (int (*)(SSL*, int))ssl_undefined_function, 135 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function 136 }; 137 138int SSL_clear(SSL *s) 139 { 140 141 if (s->method == NULL) 142 { 143 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 144 return(0); 145 } 146 147 if (ssl_clear_bad_session(s)) 148 { 149 SSL_SESSION_free(s->session); 150 s->session=NULL; 151 } 152 153 s->error=0; 154 s->hit=0; 155 s->shutdown=0; 156 157#if 0 /* Disabled since version 1.10 of this file (early return not 158 * needed because SSL_clear is not called when doing renegotiation) */ 159 /* This is set if we are doing dynamic renegotiation so keep 160 * the old cipher. It is sort of a SSL_clear_lite :-) */ 161 if (s->new_session) return(1); 162#else 163 if (s->new_session) 164 { 165 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR); 166 return 0; 167 } 168#endif 169 170 s->type=0; 171 172 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 173 174 s->version=s->method->version; 175 s->client_version=s->version; 176 s->rwstate=SSL_NOTHING; 177 s->rstate=SSL_ST_READ_HEADER; 178#if 0 179 s->read_ahead=s->ctx->read_ahead; 180#endif 181 182 if (s->init_buf != NULL) 183 { 184 BUF_MEM_free(s->init_buf); 185 s->init_buf=NULL; 186 } 187 188 ssl_clear_cipher_ctx(s); 189 190 s->first_packet=0; 191 192#if 1 193 /* Check to see if we were changed into a different method, if 194 * so, revert back if we are not doing session-id reuse. */ 195 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method)) 196 { 197 s->method->ssl_free(s); 198 s->method=s->ctx->method; 199 if (!s->method->ssl_new(s)) 200 return(0); 201 } 202 else 203#endif 204 s->method->ssl_clear(s); 205 return(1); 206 } 207 208/** Used to change an SSL_CTXs default SSL method type */ 209int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth) 210 { 211 STACK_OF(SSL_CIPHER) *sk; 212 213 ctx->method=meth; 214 215 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 216 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST); 217 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 218 { 219 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 220 return(0); 221 } 222 return(1); 223 } 224 225SSL *SSL_new(SSL_CTX *ctx) 226 { 227 SSL *s; 228 229 if (ctx == NULL) 230 { 231 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 232 return(NULL); 233 } 234 if (ctx->method == NULL) 235 { 236 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 237 return(NULL); 238 } 239 240 s=(SSL *)OPENSSL_malloc(sizeof(SSL)); 241 if (s == NULL) goto err; 242 memset(s,0,sizeof(SSL)); 243 244#ifndef OPENSSL_NO_KRB5 245 s->kssl_ctx = kssl_ctx_new(); 246#endif /* OPENSSL_NO_KRB5 */ 247 248 s->options=ctx->options; 249 s->mode=ctx->mode; 250 s->max_cert_list=ctx->max_cert_list; 251 252 if (ctx->cert != NULL) 253 { 254 /* Earlier library versions used to copy the pointer to 255 * the CERT, not its contents; only when setting new 256 * parameters for the per-SSL copy, ssl_cert_new would be 257 * called (and the direct reference to the per-SSL_CTX 258 * settings would be lost, but those still were indirectly 259 * accessed for various purposes, and for that reason they 260 * used to be known as s->ctx->default_cert). 261 * Now we don't look at the SSL_CTX's CERT after having 262 * duplicated it once. */ 263 264 s->cert = ssl_cert_dup(ctx->cert); 265 if (s->cert == NULL) 266 goto err; 267 } 268 else 269 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 270 271 s->read_ahead=ctx->read_ahead; 272 s->msg_callback=ctx->msg_callback; 273 s->msg_callback_arg=ctx->msg_callback_arg; 274 s->verify_mode=ctx->verify_mode; 275 s->verify_depth=ctx->verify_depth; 276 s->sid_ctx_length=ctx->sid_ctx_length; 277 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 278 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 279 s->verify_callback=ctx->default_verify_callback; 280 s->generate_session_id=ctx->generate_session_id; 281 s->purpose = ctx->purpose; 282 s->trust = ctx->trust; 283 s->quiet_shutdown=ctx->quiet_shutdown; 284 285 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 286 s->ctx=ctx; 287 288 s->verify_result=X509_V_OK; 289 290 s->method=ctx->method; 291 292 if (!s->method->ssl_new(s)) 293 goto err; 294 295 s->references=1; 296 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 297 298 SSL_clear(s); 299 300 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 301 302 return(s); 303err: 304 if (s != NULL) 305 { 306 if (s->cert != NULL) 307 ssl_cert_free(s->cert); 308 if (s->ctx != NULL) 309 SSL_CTX_free(s->ctx); /* decrement reference count */ 310 OPENSSL_free(s); 311 } 312 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 313 return(NULL); 314 } 315 316int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 317 unsigned int sid_ctx_len) 318 { 319 if(sid_ctx_len > sizeof ctx->sid_ctx) 320 { 321 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 322 return 0; 323 } 324 ctx->sid_ctx_length=sid_ctx_len; 325 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 326 327 return 1; 328 } 329 330int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 331 unsigned int sid_ctx_len) 332 { 333 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 334 { 335 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 336 return 0; 337 } 338 ssl->sid_ctx_length=sid_ctx_len; 339 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 340 341 return 1; 342 } 343 344int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 345 { 346 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 347 ctx->generate_session_id = cb; 348 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 349 return 1; 350 } 351 352int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 353 { 354 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 355 ssl->generate_session_id = cb; 356 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 357 return 1; 358 } 359 360int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 361 unsigned int id_len) 362 { 363 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how 364 * we can "construct" a session to give us the desired check - ie. to 365 * find if there's a session in the hash table that would conflict with 366 * any new session built out of this id/id_len and the ssl_version in 367 * use by this SSL. */ 368 SSL_SESSION r, *p; 369 370 if(id_len > sizeof r.session_id) 371 return 0; 372 373 r.ssl_version = ssl->version; 374 r.session_id_length = id_len; 375 memcpy(r.session_id, id, id_len); 376 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a 377 * callback is calling us to check the uniqueness of a shorter ID, it 378 * must be compared as a padded-out ID because that is what it will be 379 * converted to when the callback has finished choosing it. */ 380 if((r.ssl_version == SSL2_VERSION) && 381 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) 382 { 383 memset(r.session_id + id_len, 0, 384 SSL2_SSL_SESSION_ID_LENGTH - id_len); 385 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH; 386 } 387 388 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 389 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r); 390 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 391 return (p != NULL); 392 } 393 394int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 395 { 396 return X509_PURPOSE_set(&s->purpose, purpose); 397 } 398 399int SSL_set_purpose(SSL *s, int purpose) 400 { 401 return X509_PURPOSE_set(&s->purpose, purpose); 402 } 403 404int SSL_CTX_set_trust(SSL_CTX *s, int trust) 405 { 406 return X509_TRUST_set(&s->trust, trust); 407 } 408 409int SSL_set_trust(SSL *s, int trust) 410 { 411 return X509_TRUST_set(&s->trust, trust); 412 } 413 414void SSL_free(SSL *s) 415 { 416 int i; 417 418 if(s == NULL) 419 return; 420 421 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 422#ifdef REF_PRINT 423 REF_PRINT("SSL",s); 424#endif 425 if (i > 0) return; 426#ifdef REF_CHECK 427 if (i < 0) 428 { 429 fprintf(stderr,"SSL_free, bad reference count\n"); 430 abort(); /* ok */ 431 } 432#endif 433 434 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data); 435 436 if (s->bbio != NULL) 437 { 438 /* If the buffering BIO is in place, pop it off */ 439 if (s->bbio == s->wbio) 440 { 441 s->wbio=BIO_pop(s->wbio); 442 } 443 BIO_free(s->bbio); 444 s->bbio=NULL; 445 } 446 if (s->rbio != NULL) 447 BIO_free_all(s->rbio); 448 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 449 BIO_free_all(s->wbio); 450 451 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 452 453 /* add extra stuff */ 454 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 455 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 456 457 /* Make the next call work :-) */ 458 if (s->session != NULL) 459 { 460 ssl_clear_bad_session(s); 461 SSL_SESSION_free(s->session); 462 } 463 464 ssl_clear_cipher_ctx(s); 465 466 if (s->cert != NULL) ssl_cert_free(s->cert); 467 /* Free up if allocated */ 468 469 if (s->ctx) SSL_CTX_free(s->ctx); 470 471 if (s->client_CA != NULL) 472 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 473 474 if (s->method != NULL) s->method->ssl_free(s); 475 476 OPENSSL_free(s); 477 } 478 479void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 480 { 481 /* If the output buffering BIO is still in place, remove it 482 */ 483 if (s->bbio != NULL) 484 { 485 if (s->wbio == s->bbio) 486 { 487 s->wbio=s->wbio->next_bio; 488 s->bbio->next_bio=NULL; 489 } 490 } 491 if ((s->rbio != NULL) && (s->rbio != rbio)) 492 BIO_free_all(s->rbio); 493 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 494 BIO_free_all(s->wbio); 495 s->rbio=rbio; 496 s->wbio=wbio; 497 } 498 499BIO *SSL_get_rbio(SSL *s) 500 { return(s->rbio); } 501 502BIO *SSL_get_wbio(SSL *s) 503 { return(s->wbio); } 504 505int SSL_get_fd(SSL *s) 506 { 507 return(SSL_get_rfd(s)); 508 } 509 510int SSL_get_rfd(SSL *s) 511 { 512 int ret= -1; 513 BIO *b,*r; 514 515 b=SSL_get_rbio(s); 516 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 517 if (r != NULL) 518 BIO_get_fd(r,&ret); 519 return(ret); 520 } 521 522int SSL_get_wfd(SSL *s) 523 { 524 int ret= -1; 525 BIO *b,*r; 526 527 b=SSL_get_wbio(s); 528 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 529 if (r != NULL) 530 BIO_get_fd(r,&ret); 531 return(ret); 532 } 533 534#ifndef OPENSSL_NO_SOCK 535int SSL_set_fd(SSL *s,int fd) 536 { 537 int ret=0; 538 BIO *bio=NULL; 539 540 bio=BIO_new(BIO_s_socket()); 541 542 if (bio == NULL) 543 { 544 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 545 goto err; 546 } 547 BIO_set_fd(bio,fd,BIO_NOCLOSE); 548 SSL_set_bio(s,bio,bio); 549 ret=1; 550err: 551 return(ret); 552 } 553 554int SSL_set_wfd(SSL *s,int fd) 555 { 556 int ret=0; 557 BIO *bio=NULL; 558 559 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 560 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 561 { 562 bio=BIO_new(BIO_s_socket()); 563 564 if (bio == NULL) 565 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 566 BIO_set_fd(bio,fd,BIO_NOCLOSE); 567 SSL_set_bio(s,SSL_get_rbio(s),bio); 568 } 569 else 570 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 571 ret=1; 572err: 573 return(ret); 574 } 575 576int SSL_set_rfd(SSL *s,int fd) 577 { 578 int ret=0; 579 BIO *bio=NULL; 580 581 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 582 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 583 { 584 bio=BIO_new(BIO_s_socket()); 585 586 if (bio == NULL) 587 { 588 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 589 goto err; 590 } 591 BIO_set_fd(bio,fd,BIO_NOCLOSE); 592 SSL_set_bio(s,bio,SSL_get_wbio(s)); 593 } 594 else 595 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 596 ret=1; 597err: 598 return(ret); 599 } 600#endif 601 602 603/* return length of latest Finished message we sent, copy to 'buf' */ 604size_t SSL_get_finished(SSL *s, void *buf, size_t count) 605 { 606 size_t ret = 0; 607 608 if (s->s3 != NULL) 609 { 610 ret = s->s3->tmp.finish_md_len; 611 if (count > ret) 612 count = ret; 613 memcpy(buf, s->s3->tmp.finish_md, count); 614 } 615 return ret; 616 } 617 618/* return length of latest Finished message we expected, copy to 'buf' */ 619size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count) 620 { 621 size_t ret = 0; 622 623 if (s->s3 != NULL) 624 { 625 ret = s->s3->tmp.peer_finish_md_len; 626 if (count > ret) 627 count = ret; 628 memcpy(buf, s->s3->tmp.peer_finish_md, count); 629 } 630 return ret; 631 } 632 633 634int SSL_get_verify_mode(SSL *s) 635 { 636 return(s->verify_mode); 637 } 638 639int SSL_get_verify_depth(SSL *s) 640 { 641 return(s->verify_depth); 642 } 643 644int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *) 645 { 646 return(s->verify_callback); 647 } 648 649int SSL_CTX_get_verify_mode(SSL_CTX *ctx) 650 { 651 return(ctx->verify_mode); 652 } 653 654int SSL_CTX_get_verify_depth(SSL_CTX *ctx) 655 { 656 return(ctx->verify_depth); 657 } 658 659int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *) 660 { 661 return(ctx->default_verify_callback); 662 } 663 664void SSL_set_verify(SSL *s,int mode, 665 int (*callback)(int ok,X509_STORE_CTX *ctx)) 666 { 667 s->verify_mode=mode; 668 if (callback != NULL) 669 s->verify_callback=callback; 670 } 671 672void SSL_set_verify_depth(SSL *s,int depth) 673 { 674 s->verify_depth=depth; 675 } 676 677void SSL_set_read_ahead(SSL *s,int yes) 678 { 679 s->read_ahead=yes; 680 } 681 682int SSL_get_read_ahead(SSL *s) 683 { 684 return(s->read_ahead); 685 } 686 687int SSL_pending(SSL *s) 688 { 689 /* SSL_pending cannot work properly if read-ahead is enabled 690 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 691 * and it is impossible to fix since SSL_pending cannot report 692 * errors that may be observed while scanning the new data. 693 * (Note that SSL_pending() is often used as a boolean value, 694 * so we'd better not return -1.) 695 */ 696 return(s->method->ssl_pending(s)); 697 } 698 699X509 *SSL_get_peer_certificate(SSL *s) 700 { 701 X509 *r; 702 703 if ((s == NULL) || (s->session == NULL)) 704 r=NULL; 705 else 706 r=s->session->peer; 707 708 if (r == NULL) return(r); 709 710 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 711 712 return(r); 713 } 714 715STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s) 716 { 717 STACK_OF(X509) *r; 718 719 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 720 r=NULL; 721 else 722 r=s->session->sess_cert->cert_chain; 723 724 /* If we are a client, cert_chain includes the peer's own 725 * certificate; if we are a server, it does not. */ 726 727 return(r); 728 } 729 730/* Now in theory, since the calling process own 't' it should be safe to 731 * modify. We need to be able to read f without being hassled */ 732void SSL_copy_session_id(SSL *t,SSL *f) 733 { 734 CERT *tmp; 735 736 /* Do we need to to SSL locking? */ 737 SSL_set_session(t,SSL_get_session(f)); 738 739 /* what if we are setup as SSLv2 but want to talk SSLv3 or 740 * vice-versa */ 741 if (t->method != f->method) 742 { 743 t->method->ssl_free(t); /* cleanup current */ 744 t->method=f->method; /* change method */ 745 t->method->ssl_new(t); /* setup new */ 746 } 747 748 tmp=t->cert; 749 if (f->cert != NULL) 750 { 751 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 752 t->cert=f->cert; 753 } 754 else 755 t->cert=NULL; 756 if (tmp != NULL) ssl_cert_free(tmp); 757 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 758 } 759 760/* Fix this so it checks all the valid key/cert options */ 761int SSL_CTX_check_private_key(SSL_CTX *ctx) 762 { 763 if ( (ctx == NULL) || 764 (ctx->cert == NULL) || 765 (ctx->cert->key->x509 == NULL)) 766 { 767 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 768 return(0); 769 } 770 if (ctx->cert->key->privatekey == NULL) 771 { 772 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 773 return(0); 774 } 775 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 776 } 777 778/* Fix this function so that it takes an optional type parameter */ 779int SSL_check_private_key(SSL *ssl) 780 { 781 if (ssl == NULL) 782 { 783 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 784 return(0); 785 } 786 if (ssl->cert == NULL) 787 { 788 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 789 return 0; 790 } 791 if (ssl->cert->key->x509 == NULL) 792 { 793 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 794 return(0); 795 } 796 if (ssl->cert->key->privatekey == NULL) 797 { 798 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 799 return(0); 800 } 801 return(X509_check_private_key(ssl->cert->key->x509, 802 ssl->cert->key->privatekey)); 803 } 804 805int SSL_accept(SSL *s) 806 { 807 if (s->handshake_func == 0) 808 /* Not properly initialized yet */ 809 SSL_set_accept_state(s); 810 811 return(s->method->ssl_accept(s)); 812 } 813 814int SSL_connect(SSL *s) 815 { 816 if (s->handshake_func == 0) 817 /* Not properly initialized yet */ 818 SSL_set_connect_state(s); 819 820 return(s->method->ssl_connect(s)); 821 } 822 823long SSL_get_default_timeout(SSL *s) 824 { 825 return(s->method->get_timeout()); 826 } 827 828int SSL_read(SSL *s,void *buf,int num) 829 { 830 if (s->handshake_func == 0) 831 { 832 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 833 return -1; 834 } 835 836 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 837 { 838 s->rwstate=SSL_NOTHING; 839 return(0); 840 } 841 return(s->method->ssl_read(s,buf,num)); 842 } 843 844int SSL_peek(SSL *s,void *buf,int num) 845 { 846 if (s->handshake_func == 0) 847 { 848 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 849 return -1; 850 } 851 852 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 853 { 854 return(0); 855 } 856 return(s->method->ssl_peek(s,buf,num)); 857 } 858 859int SSL_write(SSL *s,const void *buf,int num) 860 { 861 if (s->handshake_func == 0) 862 { 863 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 864 return -1; 865 } 866 867 if (s->shutdown & SSL_SENT_SHUTDOWN) 868 { 869 s->rwstate=SSL_NOTHING; 870 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 871 return(-1); 872 } 873 return(s->method->ssl_write(s,buf,num)); 874 } 875 876int SSL_shutdown(SSL *s) 877 { 878 /* Note that this function behaves differently from what one might 879 * expect. Return values are 0 for no success (yet), 880 * 1 for success; but calling it once is usually not enough, 881 * even if blocking I/O is used (see ssl3_shutdown). 882 */ 883 884 if (s->handshake_func == 0) 885 { 886 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 887 return -1; 888 } 889 890 if ((s != NULL) && !SSL_in_init(s)) 891 return(s->method->ssl_shutdown(s)); 892 else 893 return(1); 894 } 895 896int SSL_renegotiate(SSL *s) 897 { 898 if (s->new_session == 0) 899 { 900 s->new_session=1; 901 } 902 return(s->method->ssl_renegotiate(s)); 903 } 904 905int SSL_renegotiate_pending(SSL *s) 906 { 907 /* becomes true when negotiation is requested; 908 * false again once a handshake has finished */ 909 return (s->new_session != 0); 910 } 911 912long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 913 { 914 long l; 915 916 switch (cmd) 917 { 918 case SSL_CTRL_GET_READ_AHEAD: 919 return(s->read_ahead); 920 case SSL_CTRL_SET_READ_AHEAD: 921 l=s->read_ahead; 922 s->read_ahead=larg; 923 return(l); 924 925 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 926 s->msg_callback_arg = parg; 927 return 1; 928 929 case SSL_CTRL_OPTIONS: 930 return(s->options|=larg); 931 case SSL_CTRL_MODE: 932 return(s->mode|=larg); 933 case SSL_CTRL_GET_MAX_CERT_LIST: 934 return(s->max_cert_list); 935 case SSL_CTRL_SET_MAX_CERT_LIST: 936 l=s->max_cert_list; 937 s->max_cert_list=larg; 938 return(l); 939 default: 940 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 941 } 942 } 943 944long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)()) 945 { 946 switch(cmd) 947 { 948 case SSL_CTRL_SET_MSG_CALLBACK: 949 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 950 return 1; 951 952 default: 953 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 954 } 955 } 956 957struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx) 958 { 959 return ctx->sessions; 960 } 961 962long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 963 { 964 long l; 965 966 switch (cmd) 967 { 968 case SSL_CTRL_GET_READ_AHEAD: 969 return(ctx->read_ahead); 970 case SSL_CTRL_SET_READ_AHEAD: 971 l=ctx->read_ahead; 972 ctx->read_ahead=larg; 973 return(l); 974 975 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 976 ctx->msg_callback_arg = parg; 977 return 1; 978 979 case SSL_CTRL_GET_MAX_CERT_LIST: 980 return(ctx->max_cert_list); 981 case SSL_CTRL_SET_MAX_CERT_LIST: 982 l=ctx->max_cert_list; 983 ctx->max_cert_list=larg; 984 return(l); 985 986 case SSL_CTRL_SET_SESS_CACHE_SIZE: 987 l=ctx->session_cache_size; 988 ctx->session_cache_size=larg; 989 return(l); 990 case SSL_CTRL_GET_SESS_CACHE_SIZE: 991 return(ctx->session_cache_size); 992 case SSL_CTRL_SET_SESS_CACHE_MODE: 993 l=ctx->session_cache_mode; 994 ctx->session_cache_mode=larg; 995 return(l); 996 case SSL_CTRL_GET_SESS_CACHE_MODE: 997 return(ctx->session_cache_mode); 998 999 case SSL_CTRL_SESS_NUMBER: 1000 return(ctx->sessions->num_items); 1001 case SSL_CTRL_SESS_CONNECT: 1002 return(ctx->stats.sess_connect); 1003 case SSL_CTRL_SESS_CONNECT_GOOD: 1004 return(ctx->stats.sess_connect_good); 1005 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1006 return(ctx->stats.sess_connect_renegotiate); 1007 case SSL_CTRL_SESS_ACCEPT: 1008 return(ctx->stats.sess_accept); 1009 case SSL_CTRL_SESS_ACCEPT_GOOD: 1010 return(ctx->stats.sess_accept_good); 1011 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1012 return(ctx->stats.sess_accept_renegotiate); 1013 case SSL_CTRL_SESS_HIT: 1014 return(ctx->stats.sess_hit); 1015 case SSL_CTRL_SESS_CB_HIT: 1016 return(ctx->stats.sess_cb_hit); 1017 case SSL_CTRL_SESS_MISSES: 1018 return(ctx->stats.sess_miss); 1019 case SSL_CTRL_SESS_TIMEOUTS: 1020 return(ctx->stats.sess_timeout); 1021 case SSL_CTRL_SESS_CACHE_FULL: 1022 return(ctx->stats.sess_cache_full); 1023 case SSL_CTRL_OPTIONS: 1024 return(ctx->options|=larg); 1025 case SSL_CTRL_MODE: 1026 return(ctx->mode|=larg); 1027 default: 1028 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1029 } 1030 } 1031 1032long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)()) 1033 { 1034 switch(cmd) 1035 { 1036 case SSL_CTRL_SET_MSG_CALLBACK: 1037 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1038 return 1; 1039 1040 default: 1041 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1042 } 1043 } 1044 1045int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1046 { 1047 long l; 1048 1049 l=a->id-b->id; 1050 if (l == 0L) 1051 return(0); 1052 else 1053 return((l > 0)?1:-1); 1054 } 1055 1056int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1057 const SSL_CIPHER * const *bp) 1058 { 1059 long l; 1060 1061 l=(*ap)->id-(*bp)->id; 1062 if (l == 0L) 1063 return(0); 1064 else 1065 return((l > 0)?1:-1); 1066 } 1067 1068/** return a STACK of the ciphers available for the SSL and in order of 1069 * preference */ 1070STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s) 1071 { 1072 if (s != NULL) 1073 { 1074 if (s->cipher_list != NULL) 1075 { 1076 return(s->cipher_list); 1077 } 1078 else if ((s->ctx != NULL) && 1079 (s->ctx->cipher_list != NULL)) 1080 { 1081 return(s->ctx->cipher_list); 1082 } 1083 } 1084 return(NULL); 1085 } 1086 1087/** return a STACK of the ciphers available for the SSL and in order of 1088 * algorithm id */ 1089STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1090 { 1091 if (s != NULL) 1092 { 1093 if (s->cipher_list_by_id != NULL) 1094 { 1095 return(s->cipher_list_by_id); 1096 } 1097 else if ((s->ctx != NULL) && 1098 (s->ctx->cipher_list_by_id != NULL)) 1099 { 1100 return(s->ctx->cipher_list_by_id); 1101 } 1102 } 1103 return(NULL); 1104 } 1105 1106/** The old interface to get the same thing as SSL_get_ciphers() */ 1107const char *SSL_get_cipher_list(SSL *s,int n) 1108 { 1109 SSL_CIPHER *c; 1110 STACK_OF(SSL_CIPHER) *sk; 1111 1112 if (s == NULL) return(NULL); 1113 sk=SSL_get_ciphers(s); 1114 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1115 return(NULL); 1116 c=sk_SSL_CIPHER_value(sk,n); 1117 if (c == NULL) return(NULL); 1118 return(c->name); 1119 } 1120 1121/** specify the ciphers to be used by default by the SSL_CTX */ 1122int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1123 { 1124 STACK_OF(SSL_CIPHER) *sk; 1125 1126 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1127 &ctx->cipher_list_by_id,str); 1128/* XXXX */ 1129 return((sk == NULL)?0:1); 1130 } 1131 1132/** specify the ciphers to be used by the SSL */ 1133int SSL_set_cipher_list(SSL *s,const char *str) 1134 { 1135 STACK_OF(SSL_CIPHER) *sk; 1136 1137 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1138 &s->cipher_list_by_id,str); 1139/* XXXX */ 1140 return((sk == NULL)?0:1); 1141 } 1142 1143/* works well for SSLv2, not so good for SSLv3 */ 1144char *SSL_get_shared_ciphers(SSL *s,char *buf,int len) 1145 { 1146 char *p; 1147 const char *cp; 1148 STACK_OF(SSL_CIPHER) *sk; 1149 SSL_CIPHER *c; 1150 int i; 1151 1152 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1153 (len < 2)) 1154 return(NULL); 1155 1156 p=buf; 1157 sk=s->session->ciphers; 1158 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1159 { 1160 /* Decrement for either the ':' or a '\0' */ 1161 len--; 1162 c=sk_SSL_CIPHER_value(sk,i); 1163 for (cp=c->name; *cp; ) 1164 { 1165 if (len-- == 0) 1166 { 1167 *p='\0'; 1168 return(buf); 1169 } 1170 else 1171 *(p++)= *(cp++); 1172 } 1173 *(p++)=':'; 1174 } 1175 p[-1]='\0'; 1176 return(buf); 1177 } 1178 1179int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p) 1180 { 1181 int i,j=0; 1182 SSL_CIPHER *c; 1183 unsigned char *q; 1184#ifndef OPENSSL_NO_KRB5 1185 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1186#endif /* OPENSSL_NO_KRB5 */ 1187 1188 if (sk == NULL) return(0); 1189 q=p; 1190 1191 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1192 { 1193 c=sk_SSL_CIPHER_value(sk,i); 1194#ifndef OPENSSL_NO_KRB5 1195 if ((c->algorithms & SSL_KRB5) && nokrb5) 1196 continue; 1197#endif /* OPENSSL_NO_KRB5 */ 1198 j=ssl_put_cipher_by_char(s,c,p); 1199 p+=j; 1200 } 1201 return(p-q); 1202 } 1203 1204STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1205 STACK_OF(SSL_CIPHER) **skp) 1206 { 1207 SSL_CIPHER *c; 1208 STACK_OF(SSL_CIPHER) *sk; 1209 int i,n; 1210 1211 n=ssl_put_cipher_by_char(s,NULL,NULL); 1212 if ((num%n) != 0) 1213 { 1214 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1215 return(NULL); 1216 } 1217 if ((skp == NULL) || (*skp == NULL)) 1218 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1219 else 1220 { 1221 sk= *skp; 1222 sk_SSL_CIPHER_zero(sk); 1223 } 1224 1225 for (i=0; i<num; i+=n) 1226 { 1227 c=ssl_get_cipher_by_char(s,p); 1228 p+=n; 1229 if (c != NULL) 1230 { 1231 if (!sk_SSL_CIPHER_push(sk,c)) 1232 { 1233 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1234 goto err; 1235 } 1236 } 1237 } 1238 1239 if (skp != NULL) 1240 *skp=sk; 1241 return(sk); 1242err: 1243 if ((skp == NULL) || (*skp == NULL)) 1244 sk_SSL_CIPHER_free(sk); 1245 return(NULL); 1246 } 1247 1248unsigned long SSL_SESSION_hash(SSL_SESSION *a) 1249 { 1250 unsigned long l; 1251 1252 l=(unsigned long) 1253 ((unsigned int) a->session_id[0] )| 1254 ((unsigned int) a->session_id[1]<< 8L)| 1255 ((unsigned long)a->session_id[2]<<16L)| 1256 ((unsigned long)a->session_id[3]<<24L); 1257 return(l); 1258 } 1259 1260/* NB: If this function (or indeed the hash function which uses a sort of 1261 * coarser function than this one) is changed, ensure 1262 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1263 * able to construct an SSL_SESSION that will collide with any existing session 1264 * with a matching session ID. */ 1265int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b) 1266 { 1267 if (a->ssl_version != b->ssl_version) 1268 return(1); 1269 if (a->session_id_length != b->session_id_length) 1270 return(1); 1271 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1272 } 1273 1274/* These wrapper functions should remain rather than redeclaring 1275 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1276 * variable. The reason is that the functions aren't static, they're exposed via 1277 * ssl.h. */ 1278static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *) 1279static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *) 1280 1281SSL_CTX *SSL_CTX_new(SSL_METHOD *meth) 1282 { 1283 SSL_CTX *ret=NULL; 1284 1285 if (meth == NULL) 1286 { 1287 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1288 return(NULL); 1289 } 1290 1291 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1292 { 1293 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1294 goto err; 1295 } 1296 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1297 if (ret == NULL) 1298 goto err; 1299 1300 memset(ret,0,sizeof(SSL_CTX)); 1301 1302 ret->method=meth; 1303 1304 ret->cert_store=NULL; 1305 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1306 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1307 ret->session_cache_head=NULL; 1308 ret->session_cache_tail=NULL; 1309 1310 /* We take the system default */ 1311 ret->session_timeout=meth->get_timeout(); 1312 1313 ret->new_session_cb=0; 1314 ret->remove_session_cb=0; 1315 ret->get_session_cb=0; 1316 ret->generate_session_id=0; 1317 1318 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1319 1320 ret->references=1; 1321 ret->quiet_shutdown=0; 1322 1323/* ret->cipher=NULL;*/ 1324/* ret->s2->challenge=NULL; 1325 ret->master_key=NULL; 1326 ret->key_arg=NULL; 1327 ret->s2->conn_id=NULL; */ 1328 1329 ret->info_callback=NULL; 1330 1331 ret->app_verify_callback=0; 1332 ret->app_verify_arg=NULL; 1333 1334 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1335 ret->read_ahead=0; 1336 ret->msg_callback=0; 1337 ret->msg_callback_arg=NULL; 1338 ret->verify_mode=SSL_VERIFY_NONE; 1339 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1340 ret->sid_ctx_length=0; 1341 ret->default_verify_callback=NULL; 1342 if ((ret->cert=ssl_cert_new()) == NULL) 1343 goto err; 1344 1345 ret->default_passwd_callback=0; 1346 ret->default_passwd_callback_userdata=NULL; 1347 ret->client_cert_cb=0; 1348 1349 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash), 1350 LHASH_COMP_FN(SSL_SESSION_cmp)); 1351 if (ret->sessions == NULL) goto err; 1352 ret->cert_store=X509_STORE_new(); 1353 if (ret->cert_store == NULL) goto err; 1354 1355 ssl_create_cipher_list(ret->method, 1356 &ret->cipher_list,&ret->cipher_list_by_id, 1357 SSL_DEFAULT_CIPHER_LIST); 1358 if (ret->cipher_list == NULL 1359 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1360 { 1361 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1362 goto err2; 1363 } 1364 1365 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1366 { 1367 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1368 goto err2; 1369 } 1370 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1371 { 1372 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1373 goto err2; 1374 } 1375 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1376 { 1377 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1378 goto err2; 1379 } 1380 1381 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1382 goto err; 1383 1384 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1385 1386 ret->extra_certs=NULL; 1387 ret->comp_methods=SSL_COMP_get_compression_methods(); 1388 1389 return(ret); 1390err: 1391 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1392err2: 1393 if (ret != NULL) SSL_CTX_free(ret); 1394 return(NULL); 1395 } 1396 1397#if 0 1398static void SSL_COMP_free(SSL_COMP *comp) 1399 { OPENSSL_free(comp); } 1400#endif 1401 1402void SSL_CTX_free(SSL_CTX *a) 1403 { 1404 int i; 1405 1406 if (a == NULL) return; 1407 1408 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1409#ifdef REF_PRINT 1410 REF_PRINT("SSL_CTX",a); 1411#endif 1412 if (i > 0) return; 1413#ifdef REF_CHECK 1414 if (i < 0) 1415 { 1416 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1417 abort(); /* ok */ 1418 } 1419#endif 1420 1421 /* 1422 * Free internal session cache. However: the remove_cb() may reference 1423 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1424 * after the sessions were flushed. 1425 * As the ex_data handling routines might also touch the session cache, 1426 * the most secure solution seems to be: empty (flush) the cache, then 1427 * free ex_data, then finally free the cache. 1428 * (See ticket [openssl.org #212].) 1429 */ 1430 if (a->sessions != NULL) 1431 SSL_CTX_flush_sessions(a,0); 1432 1433 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1434 1435 if (a->sessions != NULL) 1436 lh_free(a->sessions); 1437 1438 if (a->cert_store != NULL) 1439 X509_STORE_free(a->cert_store); 1440 if (a->cipher_list != NULL) 1441 sk_SSL_CIPHER_free(a->cipher_list); 1442 if (a->cipher_list_by_id != NULL) 1443 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1444 if (a->cert != NULL) 1445 ssl_cert_free(a->cert); 1446 if (a->client_CA != NULL) 1447 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1448 if (a->extra_certs != NULL) 1449 sk_X509_pop_free(a->extra_certs,X509_free); 1450#if 0 /* This should never be done, since it removes a global database */ 1451 if (a->comp_methods != NULL) 1452 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1453#else 1454 a->comp_methods = NULL; 1455#endif 1456 OPENSSL_free(a); 1457 } 1458 1459void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1460 { 1461 ctx->default_passwd_callback=cb; 1462 } 1463 1464void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1465 { 1466 ctx->default_passwd_callback_userdata=u; 1467 } 1468 1469void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1470 { 1471 ctx->app_verify_callback=cb; 1472 ctx->app_verify_arg=arg; 1473 } 1474 1475void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1476 { 1477 ctx->verify_mode=mode; 1478 ctx->default_verify_callback=cb; 1479 } 1480 1481void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1482 { 1483 ctx->verify_depth=depth; 1484 } 1485 1486void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher) 1487 { 1488 CERT_PKEY *cpk; 1489 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1490 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1491 int rsa_tmp_export,dh_tmp_export,kl; 1492 unsigned long mask,emask; 1493 1494 if (c == NULL) return; 1495 1496 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1497 1498#ifndef OPENSSL_NO_RSA 1499 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1500 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1501 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1502#else 1503 rsa_tmp=rsa_tmp_export=0; 1504#endif 1505#ifndef OPENSSL_NO_DH 1506 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1507 dh_tmp_export=(c->dh_tmp_cb != NULL || 1508 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1509#else 1510 dh_tmp=dh_tmp_export=0; 1511#endif 1512 1513 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1514 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1515 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1516 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1517 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1518 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1519 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1520 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1521 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1522 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1523 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1524/* FIX THIS EAY EAY EAY */ 1525 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1526 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1527 1528 mask=0; 1529 emask=0; 1530 1531#ifdef CIPHER_DEBUG 1532 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1533 rsa_tmp,rsa_tmp_export,dh_tmp, 1534 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1535#endif 1536 1537 if (rsa_enc || (rsa_tmp && rsa_sign)) 1538 mask|=SSL_kRSA; 1539 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1540 emask|=SSL_kRSA; 1541 1542#if 0 1543 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1544 if ( (dh_tmp || dh_rsa || dh_dsa) && 1545 (rsa_enc || rsa_sign || dsa_sign)) 1546 mask|=SSL_kEDH; 1547 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1548 (rsa_enc || rsa_sign || dsa_sign)) 1549 emask|=SSL_kEDH; 1550#endif 1551 1552 if (dh_tmp_export) 1553 emask|=SSL_kEDH; 1554 1555 if (dh_tmp) 1556 mask|=SSL_kEDH; 1557 1558 if (dh_rsa) mask|=SSL_kDHr; 1559 if (dh_rsa_export) emask|=SSL_kDHr; 1560 1561 if (dh_dsa) mask|=SSL_kDHd; 1562 if (dh_dsa_export) emask|=SSL_kDHd; 1563 1564 if (rsa_enc || rsa_sign) 1565 { 1566 mask|=SSL_aRSA; 1567 emask|=SSL_aRSA; 1568 } 1569 1570 if (dsa_sign) 1571 { 1572 mask|=SSL_aDSS; 1573 emask|=SSL_aDSS; 1574 } 1575 1576 mask|=SSL_aNULL; 1577 emask|=SSL_aNULL; 1578 1579#ifndef OPENSSL_NO_KRB5 1580 mask|=SSL_kKRB5|SSL_aKRB5; 1581 emask|=SSL_kKRB5|SSL_aKRB5; 1582#endif 1583 1584 c->mask=mask; 1585 c->export_mask=emask; 1586 c->valid=1; 1587 } 1588 1589/* THIS NEEDS CLEANING UP */ 1590X509 *ssl_get_server_send_cert(SSL *s) 1591 { 1592 unsigned long alg,mask,kalg; 1593 CERT *c; 1594 int i,is_export; 1595 1596 c=s->cert; 1597 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 1598 alg=s->s3->tmp.new_cipher->algorithms; 1599 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); 1600 mask=is_export?c->export_mask:c->mask; 1601 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK); 1602 1603 if (kalg & SSL_kDHr) 1604 i=SSL_PKEY_DH_RSA; 1605 else if (kalg & SSL_kDHd) 1606 i=SSL_PKEY_DH_DSA; 1607 else if (kalg & SSL_aDSS) 1608 i=SSL_PKEY_DSA_SIGN; 1609 else if (kalg & SSL_aRSA) 1610 { 1611 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 1612 i=SSL_PKEY_RSA_SIGN; 1613 else 1614 i=SSL_PKEY_RSA_ENC; 1615 } 1616 else if (kalg & SSL_aKRB5) 1617 { 1618 /* VRS something else here? */ 1619 return(NULL); 1620 } 1621 else /* if (kalg & SSL_aNULL) */ 1622 { 1623 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 1624 return(NULL); 1625 } 1626 if (c->pkeys[i].x509 == NULL) return(NULL); 1627 return(c->pkeys[i].x509); 1628 } 1629 1630EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher) 1631 { 1632 unsigned long alg; 1633 CERT *c; 1634 1635 alg=cipher->algorithms; 1636 c=s->cert; 1637 1638 if ((alg & SSL_aDSS) && 1639 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 1640 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 1641 else if (alg & SSL_aRSA) 1642 { 1643 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 1644 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 1645 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 1646 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 1647 else 1648 return(NULL); 1649 } 1650 else /* if (alg & SSL_aNULL) */ 1651 { 1652 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 1653 return(NULL); 1654 } 1655 } 1656 1657void ssl_update_cache(SSL *s,int mode) 1658 { 1659 int i; 1660 1661 /* If the session_id_length is 0, we are not supposed to cache it, 1662 * and it would be rather hard to do anyway :-) */ 1663 if (s->session->session_id_length == 0) return; 1664 1665 i=s->ctx->session_cache_mode; 1666 if ((i & mode) && (!s->hit) 1667 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 1668 || SSL_CTX_add_session(s->ctx,s->session)) 1669 && (s->ctx->new_session_cb != NULL)) 1670 { 1671 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 1672 if (!s->ctx->new_session_cb(s,s->session)) 1673 SSL_SESSION_free(s->session); 1674 } 1675 1676 /* auto flush every 255 connections */ 1677 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 1678 ((i & mode) == mode)) 1679 { 1680 if ( (((mode & SSL_SESS_CACHE_CLIENT) 1681 ?s->ctx->stats.sess_connect_good 1682 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff) 1683 { 1684 SSL_CTX_flush_sessions(s->ctx,time(NULL)); 1685 } 1686 } 1687 } 1688 1689SSL_METHOD *SSL_get_ssl_method(SSL *s) 1690 { 1691 return(s->method); 1692 } 1693 1694int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth) 1695 { 1696 int conn= -1; 1697 int ret=1; 1698 1699 if (s->method != meth) 1700 { 1701 if (s->handshake_func != NULL) 1702 conn=(s->handshake_func == s->method->ssl_connect); 1703 1704 if (s->method->version == meth->version) 1705 s->method=meth; 1706 else 1707 { 1708 s->method->ssl_free(s); 1709 s->method=meth; 1710 ret=s->method->ssl_new(s); 1711 } 1712 1713 if (conn == 1) 1714 s->handshake_func=meth->ssl_connect; 1715 else if (conn == 0) 1716 s->handshake_func=meth->ssl_accept; 1717 } 1718 return(ret); 1719 } 1720 1721int SSL_get_error(SSL *s,int i) 1722 { 1723 int reason; 1724 unsigned long l; 1725 BIO *bio; 1726 1727 if (i > 0) return(SSL_ERROR_NONE); 1728 1729 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 1730 * etc, where we do encode the error */ 1731 if ((l=ERR_peek_error()) != 0) 1732 { 1733 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 1734 return(SSL_ERROR_SYSCALL); 1735 else 1736 return(SSL_ERROR_SSL); 1737 } 1738 1739 if ((i < 0) && SSL_want_read(s)) 1740 { 1741 bio=SSL_get_rbio(s); 1742 if (BIO_should_read(bio)) 1743 return(SSL_ERROR_WANT_READ); 1744 else if (BIO_should_write(bio)) 1745 /* This one doesn't make too much sense ... We never try 1746 * to write to the rbio, and an application program where 1747 * rbio and wbio are separate couldn't even know what it 1748 * should wait for. 1749 * However if we ever set s->rwstate incorrectly 1750 * (so that we have SSL_want_read(s) instead of 1751 * SSL_want_write(s)) and rbio and wbio *are* the same, 1752 * this test works around that bug; so it might be safer 1753 * to keep it. */ 1754 return(SSL_ERROR_WANT_WRITE); 1755 else if (BIO_should_io_special(bio)) 1756 { 1757 reason=BIO_get_retry_reason(bio); 1758 if (reason == BIO_RR_CONNECT) 1759 return(SSL_ERROR_WANT_CONNECT); 1760 else if (reason == BIO_RR_ACCEPT) 1761 return(SSL_ERROR_WANT_ACCEPT); 1762 else 1763 return(SSL_ERROR_SYSCALL); /* unknown */ 1764 } 1765 } 1766 1767 if ((i < 0) && SSL_want_write(s)) 1768 { 1769 bio=SSL_get_wbio(s); 1770 if (BIO_should_write(bio)) 1771 return(SSL_ERROR_WANT_WRITE); 1772 else if (BIO_should_read(bio)) 1773 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 1774 return(SSL_ERROR_WANT_READ); 1775 else if (BIO_should_io_special(bio)) 1776 { 1777 reason=BIO_get_retry_reason(bio); 1778 if (reason == BIO_RR_CONNECT) 1779 return(SSL_ERROR_WANT_CONNECT); 1780 else if (reason == BIO_RR_ACCEPT) 1781 return(SSL_ERROR_WANT_ACCEPT); 1782 else 1783 return(SSL_ERROR_SYSCALL); 1784 } 1785 } 1786 if ((i < 0) && SSL_want_x509_lookup(s)) 1787 { 1788 return(SSL_ERROR_WANT_X509_LOOKUP); 1789 } 1790 1791 if (i == 0) 1792 { 1793 if (s->version == SSL2_VERSION) 1794 { 1795 /* assume it is the socket being closed */ 1796 return(SSL_ERROR_ZERO_RETURN); 1797 } 1798 else 1799 { 1800 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 1801 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 1802 return(SSL_ERROR_ZERO_RETURN); 1803 } 1804 } 1805 return(SSL_ERROR_SYSCALL); 1806 } 1807 1808int SSL_do_handshake(SSL *s) 1809 { 1810 int ret=1; 1811 1812 if (s->handshake_func == NULL) 1813 { 1814 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 1815 return(-1); 1816 } 1817 1818 s->method->ssl_renegotiate_check(s); 1819 1820 if (SSL_in_init(s) || SSL_in_before(s)) 1821 { 1822 ret=s->handshake_func(s); 1823 } 1824 return(ret); 1825 } 1826 1827/* For the next 2 functions, SSL_clear() sets shutdown and so 1828 * one of these calls will reset it */ 1829void SSL_set_accept_state(SSL *s) 1830 { 1831 s->server=1; 1832 s->shutdown=0; 1833 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 1834 s->handshake_func=s->method->ssl_accept; 1835 /* clear the current cipher */ 1836 ssl_clear_cipher_ctx(s); 1837 } 1838 1839void SSL_set_connect_state(SSL *s) 1840 { 1841 s->server=0; 1842 s->shutdown=0; 1843 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 1844 s->handshake_func=s->method->ssl_connect; 1845 /* clear the current cipher */ 1846 ssl_clear_cipher_ctx(s); 1847 } 1848 1849int ssl_undefined_function(SSL *s) 1850 { 1851 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1852 return(0); 1853 } 1854 1855SSL_METHOD *ssl_bad_method(int ver) 1856 { 1857 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1858 return(NULL); 1859 } 1860 1861const char *SSL_get_version(SSL *s) 1862 { 1863 if (s->version == TLS1_VERSION) 1864 return("TLSv1"); 1865 else if (s->version == SSL3_VERSION) 1866 return("SSLv3"); 1867 else if (s->version == SSL2_VERSION) 1868 return("SSLv2"); 1869 else 1870 return("unknown"); 1871 } 1872 1873SSL *SSL_dup(SSL *s) 1874 { 1875 STACK_OF(X509_NAME) *sk; 1876 X509_NAME *xn; 1877 SSL *ret; 1878 int i; 1879 1880 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 1881 return(NULL); 1882 1883 ret->version = s->version; 1884 ret->type = s->type; 1885 ret->method = s->method; 1886 1887 if (s->session != NULL) 1888 { 1889 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 1890 SSL_copy_session_id(ret,s); 1891 } 1892 else 1893 { 1894 /* No session has been established yet, so we have to expect 1895 * that s->cert or ret->cert will be changed later -- 1896 * they should not both point to the same object, 1897 * and thus we can't use SSL_copy_session_id. */ 1898 1899 ret->method->ssl_free(ret); 1900 ret->method = s->method; 1901 ret->method->ssl_new(ret); 1902 1903 if (s->cert != NULL) 1904 { 1905 if (ret->cert != NULL) 1906 { 1907 ssl_cert_free(ret->cert); 1908 } 1909 ret->cert = ssl_cert_dup(s->cert); 1910 if (ret->cert == NULL) 1911 goto err; 1912 } 1913 1914 SSL_set_session_id_context(ret, 1915 s->sid_ctx, s->sid_ctx_length); 1916 } 1917 1918 ret->options=s->options; 1919 ret->mode=s->mode; 1920 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 1921 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 1922 ret->msg_callback = s->msg_callback; 1923 ret->msg_callback_arg = s->msg_callback_arg; 1924 SSL_set_verify(ret,SSL_get_verify_mode(s), 1925 SSL_get_verify_callback(s)); 1926 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 1927 ret->generate_session_id = s->generate_session_id; 1928 1929 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 1930 1931 ret->debug=s->debug; 1932 1933 /* copy app data, a little dangerous perhaps */ 1934 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 1935 goto err; 1936 1937 /* setup rbio, and wbio */ 1938 if (s->rbio != NULL) 1939 { 1940 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 1941 goto err; 1942 } 1943 if (s->wbio != NULL) 1944 { 1945 if (s->wbio != s->rbio) 1946 { 1947 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 1948 goto err; 1949 } 1950 else 1951 ret->wbio=ret->rbio; 1952 } 1953 ret->rwstate = s->rwstate; 1954 ret->in_handshake = s->in_handshake; 1955 ret->handshake_func = s->handshake_func; 1956 ret->server = s->server; 1957 ret->new_session = s->new_session; 1958 ret->quiet_shutdown = s->quiet_shutdown; 1959 ret->shutdown=s->shutdown; 1960 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 1961 ret->rstate=s->rstate; 1962 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 1963 ret->hit=s->hit; 1964 ret->purpose=s->purpose; 1965 ret->trust=s->trust; 1966 1967 /* dup the cipher_list and cipher_list_by_id stacks */ 1968 if (s->cipher_list != NULL) 1969 { 1970 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 1971 goto err; 1972 } 1973 if (s->cipher_list_by_id != NULL) 1974 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 1975 == NULL) 1976 goto err; 1977 1978 /* Dup the client_CA list */ 1979 if (s->client_CA != NULL) 1980 { 1981 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 1982 ret->client_CA=sk; 1983 for (i=0; i<sk_X509_NAME_num(sk); i++) 1984 { 1985 xn=sk_X509_NAME_value(sk,i); 1986 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 1987 { 1988 X509_NAME_free(xn); 1989 goto err; 1990 } 1991 } 1992 } 1993 1994 if (0) 1995 { 1996err: 1997 if (ret != NULL) SSL_free(ret); 1998 ret=NULL; 1999 } 2000 return(ret); 2001 } 2002 2003void ssl_clear_cipher_ctx(SSL *s) 2004 { 2005 if (s->enc_read_ctx != NULL) 2006 { 2007 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2008 OPENSSL_free(s->enc_read_ctx); 2009 s->enc_read_ctx=NULL; 2010 } 2011 if (s->enc_write_ctx != NULL) 2012 { 2013 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2014 OPENSSL_free(s->enc_write_ctx); 2015 s->enc_write_ctx=NULL; 2016 } 2017 if (s->expand != NULL) 2018 { 2019 COMP_CTX_free(s->expand); 2020 s->expand=NULL; 2021 } 2022 if (s->compress != NULL) 2023 { 2024 COMP_CTX_free(s->compress); 2025 s->compress=NULL; 2026 } 2027 } 2028 2029/* Fix this function so that it takes an optional type parameter */ 2030X509 *SSL_get_certificate(SSL *s) 2031 { 2032 if (s->cert != NULL) 2033 return(s->cert->key->x509); 2034 else 2035 return(NULL); 2036 } 2037 2038/* Fix this function so that it takes an optional type parameter */ 2039EVP_PKEY *SSL_get_privatekey(SSL *s) 2040 { 2041 if (s->cert != NULL) 2042 return(s->cert->key->privatekey); 2043 else 2044 return(NULL); 2045 } 2046 2047SSL_CIPHER *SSL_get_current_cipher(SSL *s) 2048 { 2049 if ((s->session != NULL) && (s->session->cipher != NULL)) 2050 return(s->session->cipher); 2051 return(NULL); 2052 } 2053 2054int ssl_init_wbio_buffer(SSL *s,int push) 2055 { 2056 BIO *bbio; 2057 2058 if (s->bbio == NULL) 2059 { 2060 bbio=BIO_new(BIO_f_buffer()); 2061 if (bbio == NULL) return(0); 2062 s->bbio=bbio; 2063 } 2064 else 2065 { 2066 bbio=s->bbio; 2067 if (s->bbio == s->wbio) 2068 s->wbio=BIO_pop(s->wbio); 2069 } 2070 (void)BIO_reset(bbio); 2071/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2072 if (!BIO_set_read_buffer_size(bbio,1)) 2073 { 2074 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2075 return(0); 2076 } 2077 if (push) 2078 { 2079 if (s->wbio != bbio) 2080 s->wbio=BIO_push(bbio,s->wbio); 2081 } 2082 else 2083 { 2084 if (s->wbio == bbio) 2085 s->wbio=BIO_pop(bbio); 2086 } 2087 return(1); 2088 } 2089 2090void ssl_free_wbio_buffer(SSL *s) 2091 { 2092 if (s->bbio == NULL) return; 2093 2094 if (s->bbio == s->wbio) 2095 { 2096 /* remove buffering */ 2097 s->wbio=BIO_pop(s->wbio); 2098#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2099 assert(s->wbio != NULL); 2100#endif 2101 } 2102 BIO_free(s->bbio); 2103 s->bbio=NULL; 2104 } 2105 2106void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2107 { 2108 ctx->quiet_shutdown=mode; 2109 } 2110 2111int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx) 2112 { 2113 return(ctx->quiet_shutdown); 2114 } 2115 2116void SSL_set_quiet_shutdown(SSL *s,int mode) 2117 { 2118 s->quiet_shutdown=mode; 2119 } 2120 2121int SSL_get_quiet_shutdown(SSL *s) 2122 { 2123 return(s->quiet_shutdown); 2124 } 2125 2126void SSL_set_shutdown(SSL *s,int mode) 2127 { 2128 s->shutdown=mode; 2129 } 2130 2131int SSL_get_shutdown(SSL *s) 2132 { 2133 return(s->shutdown); 2134 } 2135 2136int SSL_version(SSL *s) 2137 { 2138 return(s->version); 2139 } 2140 2141SSL_CTX *SSL_get_SSL_CTX(SSL *ssl) 2142 { 2143 return(ssl->ctx); 2144 } 2145 2146#ifndef OPENSSL_NO_STDIO 2147int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2148 { 2149 return(X509_STORE_set_default_paths(ctx->cert_store)); 2150 } 2151 2152int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2153 const char *CApath) 2154 { 2155 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 2156 } 2157#endif 2158 2159void SSL_set_info_callback(SSL *ssl, 2160 void (*cb)(const SSL *ssl,int type,int val)) 2161 { 2162 ssl->info_callback=cb; 2163 } 2164 2165void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val) 2166 { 2167 return ssl->info_callback; 2168 } 2169 2170int SSL_state(SSL *ssl) 2171 { 2172 return(ssl->state); 2173 } 2174 2175void SSL_set_verify_result(SSL *ssl,long arg) 2176 { 2177 ssl->verify_result=arg; 2178 } 2179 2180long SSL_get_verify_result(SSL *ssl) 2181 { 2182 return(ssl->verify_result); 2183 } 2184 2185int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2186 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2187 { 2188 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2189 new_func, dup_func, free_func); 2190 } 2191 2192int SSL_set_ex_data(SSL *s,int idx,void *arg) 2193 { 2194 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2195 } 2196 2197void *SSL_get_ex_data(SSL *s,int idx) 2198 { 2199 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2200 } 2201 2202int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2203 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2204 { 2205 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2206 new_func, dup_func, free_func); 2207 } 2208 2209int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2210 { 2211 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2212 } 2213 2214void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx) 2215 { 2216 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2217 } 2218 2219int ssl_ok(SSL *s) 2220 { 2221 return(1); 2222 } 2223 2224X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx) 2225 { 2226 return(ctx->cert_store); 2227 } 2228 2229void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2230 { 2231 if (ctx->cert_store != NULL) 2232 X509_STORE_free(ctx->cert_store); 2233 ctx->cert_store=store; 2234 } 2235 2236int SSL_want(SSL *s) 2237 { 2238 return(s->rwstate); 2239 } 2240 2241/*! 2242 * \brief Set the callback for generating temporary RSA keys. 2243 * \param ctx the SSL context. 2244 * \param cb the callback 2245 */ 2246 2247#ifndef OPENSSL_NO_RSA 2248void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2249 int is_export, 2250 int keylength)) 2251 { 2252 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2253 } 2254 2255void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2256 int is_export, 2257 int keylength)) 2258 { 2259 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2260 } 2261#endif 2262 2263#ifdef DOXYGEN 2264/*! 2265 * \brief The RSA temporary key callback function. 2266 * \param ssl the SSL session. 2267 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2268 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2269 * of the required key in bits. 2270 * \return the temporary RSA key. 2271 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2272 */ 2273 2274RSA *cb(SSL *ssl,int is_export,int keylength) 2275 {} 2276#endif 2277 2278/*! 2279 * \brief Set the callback for generating temporary DH keys. 2280 * \param ctx the SSL context. 2281 * \param dh the callback 2282 */ 2283 2284#ifndef OPENSSL_NO_DH 2285void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2286 int keylength)) 2287 { 2288 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2289 } 2290 2291void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2292 int keylength)) 2293 { 2294 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2295 } 2296#endif 2297 2298 2299void 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)) 2300 { 2301 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2302 } 2303void 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)) 2304 { 2305 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2306 } 2307 2308 2309 2310#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 2311#include "../crypto/bio/bss_file.c" 2312#endif 2313 2314IMPLEMENT_STACK_OF(SSL_CIPHER) 2315IMPLEMENT_STACK_OF(SSL_COMP) 2316