ssl_lib.c revision 1.16
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 <openssl/fips.h> 125 126const char *SSL_version_str=OPENSSL_VERSION_TEXT; 127 128SSL3_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#ifndef OPENSSL_NO_KRB5 477 if (s->kssl_ctx != NULL) 478 kssl_ctx_free(s->kssl_ctx); 479#endif /* OPENSSL_NO_KRB5 */ 480 481 OPENSSL_free(s); 482 } 483 484void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 485 { 486 /* If the output buffering BIO is still in place, remove it 487 */ 488 if (s->bbio != NULL) 489 { 490 if (s->wbio == s->bbio) 491 { 492 s->wbio=s->wbio->next_bio; 493 s->bbio->next_bio=NULL; 494 } 495 } 496 if ((s->rbio != NULL) && (s->rbio != rbio)) 497 BIO_free_all(s->rbio); 498 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 499 BIO_free_all(s->wbio); 500 s->rbio=rbio; 501 s->wbio=wbio; 502 } 503 504BIO *SSL_get_rbio(const SSL *s) 505 { return(s->rbio); } 506 507BIO *SSL_get_wbio(const SSL *s) 508 { return(s->wbio); } 509 510int SSL_get_fd(const SSL *s) 511 { 512 return(SSL_get_rfd(s)); 513 } 514 515int SSL_get_rfd(const SSL *s) 516 { 517 int ret= -1; 518 BIO *b,*r; 519 520 b=SSL_get_rbio(s); 521 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 522 if (r != NULL) 523 BIO_get_fd(r,&ret); 524 return(ret); 525 } 526 527int SSL_get_wfd(const SSL *s) 528 { 529 int ret= -1; 530 BIO *b,*r; 531 532 b=SSL_get_wbio(s); 533 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 534 if (r != NULL) 535 BIO_get_fd(r,&ret); 536 return(ret); 537 } 538 539#ifndef OPENSSL_NO_SOCK 540int SSL_set_fd(SSL *s,int fd) 541 { 542 int ret=0; 543 BIO *bio=NULL; 544 545 bio=BIO_new(BIO_s_socket()); 546 547 if (bio == NULL) 548 { 549 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 550 goto err; 551 } 552 BIO_set_fd(bio,fd,BIO_NOCLOSE); 553 SSL_set_bio(s,bio,bio); 554 ret=1; 555err: 556 return(ret); 557 } 558 559int SSL_set_wfd(SSL *s,int fd) 560 { 561 int ret=0; 562 BIO *bio=NULL; 563 564 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 565 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 566 { 567 bio=BIO_new(BIO_s_socket()); 568 569 if (bio == NULL) 570 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 571 BIO_set_fd(bio,fd,BIO_NOCLOSE); 572 SSL_set_bio(s,SSL_get_rbio(s),bio); 573 } 574 else 575 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 576 ret=1; 577err: 578 return(ret); 579 } 580 581int SSL_set_rfd(SSL *s,int fd) 582 { 583 int ret=0; 584 BIO *bio=NULL; 585 586 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 587 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 588 { 589 bio=BIO_new(BIO_s_socket()); 590 591 if (bio == NULL) 592 { 593 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 594 goto err; 595 } 596 BIO_set_fd(bio,fd,BIO_NOCLOSE); 597 SSL_set_bio(s,bio,SSL_get_wbio(s)); 598 } 599 else 600 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 601 ret=1; 602err: 603 return(ret); 604 } 605#endif 606 607 608/* return length of latest Finished message we sent, copy to 'buf' */ 609size_t SSL_get_finished(const SSL *s, void *buf, size_t count) 610 { 611 size_t ret = 0; 612 613 if (s->s3 != NULL) 614 { 615 ret = s->s3->tmp.finish_md_len; 616 if (count > ret) 617 count = ret; 618 memcpy(buf, s->s3->tmp.finish_md, count); 619 } 620 return ret; 621 } 622 623/* return length of latest Finished message we expected, copy to 'buf' */ 624size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 625 { 626 size_t ret = 0; 627 628 if (s->s3 != NULL) 629 { 630 ret = s->s3->tmp.peer_finish_md_len; 631 if (count > ret) 632 count = ret; 633 memcpy(buf, s->s3->tmp.peer_finish_md, count); 634 } 635 return ret; 636 } 637 638 639int SSL_get_verify_mode(const SSL *s) 640 { 641 return(s->verify_mode); 642 } 643 644int SSL_get_verify_depth(const SSL *s) 645 { 646 return(s->verify_depth); 647 } 648 649int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *) 650 { 651 return(s->verify_callback); 652 } 653 654int SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 655 { 656 return(ctx->verify_mode); 657 } 658 659int SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 660 { 661 return(ctx->verify_depth); 662 } 663 664int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *) 665 { 666 return(ctx->default_verify_callback); 667 } 668 669void SSL_set_verify(SSL *s,int mode, 670 int (*callback)(int ok,X509_STORE_CTX *ctx)) 671 { 672 s->verify_mode=mode; 673 if (callback != NULL) 674 s->verify_callback=callback; 675 } 676 677void SSL_set_verify_depth(SSL *s,int depth) 678 { 679 s->verify_depth=depth; 680 } 681 682void SSL_set_read_ahead(SSL *s,int yes) 683 { 684 s->read_ahead=yes; 685 } 686 687int SSL_get_read_ahead(const SSL *s) 688 { 689 return(s->read_ahead); 690 } 691 692int SSL_pending(const SSL *s) 693 { 694 /* SSL_pending cannot work properly if read-ahead is enabled 695 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 696 * and it is impossible to fix since SSL_pending cannot report 697 * errors that may be observed while scanning the new data. 698 * (Note that SSL_pending() is often used as a boolean value, 699 * so we'd better not return -1.) 700 */ 701 return(s->method->ssl_pending(s)); 702 } 703 704X509 *SSL_get_peer_certificate(const SSL *s) 705 { 706 X509 *r; 707 708 if ((s == NULL) || (s->session == NULL)) 709 r=NULL; 710 else 711 r=s->session->peer; 712 713 if (r == NULL) return(r); 714 715 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 716 717 return(r); 718 } 719 720STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s) 721 { 722 STACK_OF(X509) *r; 723 724 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 725 r=NULL; 726 else 727 r=s->session->sess_cert->cert_chain; 728 729 /* If we are a client, cert_chain includes the peer's own 730 * certificate; if we are a server, it does not. */ 731 732 return(r); 733 } 734 735/* Now in theory, since the calling process own 't' it should be safe to 736 * modify. We need to be able to read f without being hassled */ 737void SSL_copy_session_id(SSL *t,const SSL *f) 738 { 739 CERT *tmp; 740 741 /* Do we need to to SSL locking? */ 742 SSL_set_session(t,SSL_get_session(f)); 743 744 /* what if we are setup as SSLv2 but want to talk SSLv3 or 745 * vice-versa */ 746 if (t->method != f->method) 747 { 748 t->method->ssl_free(t); /* cleanup current */ 749 t->method=f->method; /* change method */ 750 t->method->ssl_new(t); /* setup new */ 751 } 752 753 tmp=t->cert; 754 if (f->cert != NULL) 755 { 756 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 757 t->cert=f->cert; 758 } 759 else 760 t->cert=NULL; 761 if (tmp != NULL) ssl_cert_free(tmp); 762 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 763 } 764 765/* Fix this so it checks all the valid key/cert options */ 766int SSL_CTX_check_private_key(const SSL_CTX *ctx) 767 { 768 if ( (ctx == NULL) || 769 (ctx->cert == NULL) || 770 (ctx->cert->key->x509 == NULL)) 771 { 772 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 773 return(0); 774 } 775 if (ctx->cert->key->privatekey == NULL) 776 { 777 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 778 return(0); 779 } 780 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 781 } 782 783/* Fix this function so that it takes an optional type parameter */ 784int SSL_check_private_key(const SSL *ssl) 785 { 786 if (ssl == NULL) 787 { 788 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 789 return(0); 790 } 791 if (ssl->cert == NULL) 792 { 793 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 794 return 0; 795 } 796 if (ssl->cert->key->x509 == NULL) 797 { 798 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 799 return(0); 800 } 801 if (ssl->cert->key->privatekey == NULL) 802 { 803 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 804 return(0); 805 } 806 return(X509_check_private_key(ssl->cert->key->x509, 807 ssl->cert->key->privatekey)); 808 } 809 810int SSL_accept(SSL *s) 811 { 812 if (s->handshake_func == 0) 813 /* Not properly initialized yet */ 814 SSL_set_accept_state(s); 815 816 return(s->method->ssl_accept(s)); 817 } 818 819int SSL_connect(SSL *s) 820 { 821 if (s->handshake_func == 0) 822 /* Not properly initialized yet */ 823 SSL_set_connect_state(s); 824 825 return(s->method->ssl_connect(s)); 826 } 827 828long SSL_get_default_timeout(const SSL *s) 829 { 830 return(s->method->get_timeout()); 831 } 832 833int SSL_read(SSL *s,void *buf,int num) 834 { 835 if (s->handshake_func == 0) 836 { 837 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 838 return -1; 839 } 840 841 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 842 { 843 s->rwstate=SSL_NOTHING; 844 return(0); 845 } 846 return(s->method->ssl_read(s,buf,num)); 847 } 848 849int SSL_peek(SSL *s,void *buf,int num) 850 { 851 if (s->handshake_func == 0) 852 { 853 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 854 return -1; 855 } 856 857 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 858 { 859 return(0); 860 } 861 return(s->method->ssl_peek(s,buf,num)); 862 } 863 864int SSL_write(SSL *s,const void *buf,int num) 865 { 866 if (s->handshake_func == 0) 867 { 868 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 869 return -1; 870 } 871 872 if (s->shutdown & SSL_SENT_SHUTDOWN) 873 { 874 s->rwstate=SSL_NOTHING; 875 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 876 return(-1); 877 } 878 return(s->method->ssl_write(s,buf,num)); 879 } 880 881int SSL_shutdown(SSL *s) 882 { 883 /* Note that this function behaves differently from what one might 884 * expect. Return values are 0 for no success (yet), 885 * 1 for success; but calling it once is usually not enough, 886 * even if blocking I/O is used (see ssl3_shutdown). 887 */ 888 889 if (s->handshake_func == 0) 890 { 891 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 892 return -1; 893 } 894 895 if ((s != NULL) && !SSL_in_init(s)) 896 return(s->method->ssl_shutdown(s)); 897 else 898 return(1); 899 } 900 901int SSL_renegotiate(SSL *s) 902 { 903 if (s->new_session == 0) 904 { 905 s->new_session=1; 906 } 907 return(s->method->ssl_renegotiate(s)); 908 } 909 910int SSL_renegotiate_pending(SSL *s) 911 { 912 /* becomes true when negotiation is requested; 913 * false again once a handshake has finished */ 914 return (s->new_session != 0); 915 } 916 917long SSL_ctrl(SSL *s,int cmd,long larg,void *parg) 918 { 919 long l; 920 921 switch (cmd) 922 { 923 case SSL_CTRL_GET_READ_AHEAD: 924 return(s->read_ahead); 925 case SSL_CTRL_SET_READ_AHEAD: 926 l=s->read_ahead; 927 s->read_ahead=larg; 928 return(l); 929 930 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 931 s->msg_callback_arg = parg; 932 return 1; 933 934 case SSL_CTRL_OPTIONS: 935 return(s->options|=larg); 936 case SSL_CTRL_MODE: 937 return(s->mode|=larg); 938 case SSL_CTRL_GET_MAX_CERT_LIST: 939 return(s->max_cert_list); 940 case SSL_CTRL_SET_MAX_CERT_LIST: 941 l=s->max_cert_list; 942 s->max_cert_list=larg; 943 return(l); 944 default: 945 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 946 } 947 } 948 949long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)()) 950 { 951 switch(cmd) 952 { 953 case SSL_CTRL_SET_MSG_CALLBACK: 954 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 955 return 1; 956 957 default: 958 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 959 } 960 } 961 962struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx) 963 { 964 return ctx->sessions; 965 } 966 967long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg) 968 { 969 long l; 970 971 switch (cmd) 972 { 973 case SSL_CTRL_GET_READ_AHEAD: 974 return(ctx->read_ahead); 975 case SSL_CTRL_SET_READ_AHEAD: 976 l=ctx->read_ahead; 977 ctx->read_ahead=larg; 978 return(l); 979 980 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 981 ctx->msg_callback_arg = parg; 982 return 1; 983 984 case SSL_CTRL_GET_MAX_CERT_LIST: 985 return(ctx->max_cert_list); 986 case SSL_CTRL_SET_MAX_CERT_LIST: 987 l=ctx->max_cert_list; 988 ctx->max_cert_list=larg; 989 return(l); 990 991 case SSL_CTRL_SET_SESS_CACHE_SIZE: 992 l=ctx->session_cache_size; 993 ctx->session_cache_size=larg; 994 return(l); 995 case SSL_CTRL_GET_SESS_CACHE_SIZE: 996 return(ctx->session_cache_size); 997 case SSL_CTRL_SET_SESS_CACHE_MODE: 998 l=ctx->session_cache_mode; 999 ctx->session_cache_mode=larg; 1000 return(l); 1001 case SSL_CTRL_GET_SESS_CACHE_MODE: 1002 return(ctx->session_cache_mode); 1003 1004 case SSL_CTRL_SESS_NUMBER: 1005 return(ctx->sessions->num_items); 1006 case SSL_CTRL_SESS_CONNECT: 1007 return(ctx->stats.sess_connect); 1008 case SSL_CTRL_SESS_CONNECT_GOOD: 1009 return(ctx->stats.sess_connect_good); 1010 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1011 return(ctx->stats.sess_connect_renegotiate); 1012 case SSL_CTRL_SESS_ACCEPT: 1013 return(ctx->stats.sess_accept); 1014 case SSL_CTRL_SESS_ACCEPT_GOOD: 1015 return(ctx->stats.sess_accept_good); 1016 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1017 return(ctx->stats.sess_accept_renegotiate); 1018 case SSL_CTRL_SESS_HIT: 1019 return(ctx->stats.sess_hit); 1020 case SSL_CTRL_SESS_CB_HIT: 1021 return(ctx->stats.sess_cb_hit); 1022 case SSL_CTRL_SESS_MISSES: 1023 return(ctx->stats.sess_miss); 1024 case SSL_CTRL_SESS_TIMEOUTS: 1025 return(ctx->stats.sess_timeout); 1026 case SSL_CTRL_SESS_CACHE_FULL: 1027 return(ctx->stats.sess_cache_full); 1028 case SSL_CTRL_OPTIONS: 1029 return(ctx->options|=larg); 1030 case SSL_CTRL_MODE: 1031 return(ctx->mode|=larg); 1032 default: 1033 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 1034 } 1035 } 1036 1037long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)()) 1038 { 1039 switch(cmd) 1040 { 1041 case SSL_CTRL_SET_MSG_CALLBACK: 1042 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp); 1043 return 1; 1044 1045 default: 1046 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 1047 } 1048 } 1049 1050int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1051 { 1052 long l; 1053 1054 l=a->id-b->id; 1055 if (l == 0L) 1056 return(0); 1057 else 1058 return((l > 0)?1:-1); 1059 } 1060 1061int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1062 const SSL_CIPHER * const *bp) 1063 { 1064 long l; 1065 1066 l=(*ap)->id-(*bp)->id; 1067 if (l == 0L) 1068 return(0); 1069 else 1070 return((l > 0)?1:-1); 1071 } 1072 1073/** return a STACK of the ciphers available for the SSL and in order of 1074 * preference */ 1075STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s) 1076 { 1077 if (s != NULL) 1078 { 1079 if (s->cipher_list != NULL) 1080 { 1081 return(s->cipher_list); 1082 } 1083 else if ((s->ctx != NULL) && 1084 (s->ctx->cipher_list != NULL)) 1085 { 1086 return(s->ctx->cipher_list); 1087 } 1088 } 1089 return(NULL); 1090 } 1091 1092/** return a STACK of the ciphers available for the SSL and in order of 1093 * algorithm id */ 1094STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 1095 { 1096 if (s != NULL) 1097 { 1098 if (s->cipher_list_by_id != NULL) 1099 { 1100 return(s->cipher_list_by_id); 1101 } 1102 else if ((s->ctx != NULL) && 1103 (s->ctx->cipher_list_by_id != NULL)) 1104 { 1105 return(s->ctx->cipher_list_by_id); 1106 } 1107 } 1108 return(NULL); 1109 } 1110 1111/** The old interface to get the same thing as SSL_get_ciphers() */ 1112const char *SSL_get_cipher_list(const SSL *s,int n) 1113 { 1114 SSL_CIPHER *c; 1115 STACK_OF(SSL_CIPHER) *sk; 1116 1117 if (s == NULL) return(NULL); 1118 sk=SSL_get_ciphers(s); 1119 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1120 return(NULL); 1121 c=sk_SSL_CIPHER_value(sk,n); 1122 if (c == NULL) return(NULL); 1123 return(c->name); 1124 } 1125 1126/** specify the ciphers to be used by default by the SSL_CTX */ 1127int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1128 { 1129 STACK_OF(SSL_CIPHER) *sk; 1130 1131 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 1132 &ctx->cipher_list_by_id,str); 1133 /* ssl_create_cipher_list may return an empty stack if it 1134 * was unable to find a cipher matching the given rule string 1135 * (for example if the rule string specifies a cipher which 1136 * has been disabled). This is not an error as far as 1137 * ssl_create_cipher_list is concerned, and hence 1138 * ctx->cipher_list and ctx->cipher_list_by_id has been 1139 * updated. */ 1140 if (sk == NULL) 1141 return 0; 1142 else if (sk_SSL_CIPHER_num(sk) == 0) 1143 { 1144 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1145 return 0; 1146 } 1147 return 1; 1148 } 1149 1150/** specify the ciphers to be used by the SSL */ 1151int SSL_set_cipher_list(SSL *s,const char *str) 1152 { 1153 STACK_OF(SSL_CIPHER) *sk; 1154 1155 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 1156 &s->cipher_list_by_id,str); 1157 /* see comment in SSL_CTX_set_cipher_list */ 1158 if (sk == NULL) 1159 return 0; 1160 else if (sk_SSL_CIPHER_num(sk) == 0) 1161 { 1162 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH); 1163 return 0; 1164 } 1165 return 1; 1166 } 1167 1168/* works well for SSLv2, not so good for SSLv3 */ 1169char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len) 1170 { 1171 char *p; 1172 STACK_OF(SSL_CIPHER) *sk; 1173 SSL_CIPHER *c; 1174 int i; 1175 1176 if ((s->session == NULL) || (s->session->ciphers == NULL) || 1177 (len < 2)) 1178 return(NULL); 1179 1180 p=buf; 1181 sk=s->session->ciphers; 1182 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1183 { 1184 int n; 1185 1186 c=sk_SSL_CIPHER_value(sk,i); 1187 n=strlen(c->name); 1188 if (n+1 > len) 1189 { 1190 if (p != buf) 1191 --p; 1192 *p='\0'; 1193 return buf; 1194 } 1195 strcpy(p,c->name); 1196 p+=n; 1197 *(p++)=':'; 1198 len-=n+1; 1199 } 1200 p[-1]='\0'; 1201 return(buf); 1202 } 1203 1204int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p, 1205 int (*put_cb)(const SSL_CIPHER *, unsigned char *)) 1206 { 1207 int i,j=0; 1208 SSL_CIPHER *c; 1209 unsigned char *q; 1210#ifndef OPENSSL_NO_KRB5 1211 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx); 1212#endif /* OPENSSL_NO_KRB5 */ 1213 1214 if (sk == NULL) return(0); 1215 q=p; 1216 1217 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1218 { 1219 c=sk_SSL_CIPHER_value(sk,i); 1220#ifndef OPENSSL_NO_KRB5 1221 if ((c->algorithms & SSL_KRB5) && nokrb5) 1222 continue; 1223#endif /* OPENSSL_NO_KRB5 */ 1224 1225 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p); 1226 p+=j; 1227 } 1228 return(p-q); 1229 } 1230 1231STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1232 STACK_OF(SSL_CIPHER) **skp) 1233 { 1234 SSL_CIPHER *c; 1235 STACK_OF(SSL_CIPHER) *sk; 1236 int i,n; 1237 1238 n=ssl_put_cipher_by_char(s,NULL,NULL); 1239 if ((num%n) != 0) 1240 { 1241 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1242 return(NULL); 1243 } 1244 if ((skp == NULL) || (*skp == NULL)) 1245 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */ 1246 else 1247 { 1248 sk= *skp; 1249 sk_SSL_CIPHER_zero(sk); 1250 } 1251 1252 for (i=0; i<num; i+=n) 1253 { 1254 c=ssl_get_cipher_by_char(s,p); 1255 p+=n; 1256 if (c != NULL) 1257 { 1258 if (!sk_SSL_CIPHER_push(sk,c)) 1259 { 1260 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1261 goto err; 1262 } 1263 } 1264 } 1265 1266 if (skp != NULL) 1267 *skp=sk; 1268 return(sk); 1269err: 1270 if ((skp == NULL) || (*skp == NULL)) 1271 sk_SSL_CIPHER_free(sk); 1272 return(NULL); 1273 } 1274 1275unsigned long SSL_SESSION_hash(const SSL_SESSION *a) 1276 { 1277 unsigned long l; 1278 1279 l=(unsigned long) 1280 ((unsigned int) a->session_id[0] )| 1281 ((unsigned int) a->session_id[1]<< 8L)| 1282 ((unsigned long)a->session_id[2]<<16L)| 1283 ((unsigned long)a->session_id[3]<<24L); 1284 return(l); 1285 } 1286 1287/* NB: If this function (or indeed the hash function which uses a sort of 1288 * coarser function than this one) is changed, ensure 1289 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1290 * able to construct an SSL_SESSION that will collide with any existing session 1291 * with a matching session ID. */ 1292int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b) 1293 { 1294 if (a->ssl_version != b->ssl_version) 1295 return(1); 1296 if (a->session_id_length != b->session_id_length) 1297 return(1); 1298 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1299 } 1300 1301/* These wrapper functions should remain rather than redeclaring 1302 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1303 * variable. The reason is that the functions aren't static, they're exposed via 1304 * ssl.h. */ 1305static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *) 1306static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *) 1307 1308SSL_CTX *SSL_CTX_new(SSL_METHOD *meth) 1309 { 1310 SSL_CTX *ret=NULL; 1311 1312 if (meth == NULL) 1313 { 1314 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1315 return(NULL); 1316 } 1317 1318#ifdef OPENSSL_FIPS 1319 if (FIPS_mode() && (meth->version < TLS1_VERSION)) 1320 { 1321 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE); 1322 return NULL; 1323 } 1324#endif 1325 1326 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1327 { 1328 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1329 goto err; 1330 } 1331 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX)); 1332 if (ret == NULL) 1333 goto err; 1334 1335 memset(ret,0,sizeof(SSL_CTX)); 1336 1337 ret->method=meth; 1338 1339 ret->cert_store=NULL; 1340 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1341 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1342 ret->session_cache_head=NULL; 1343 ret->session_cache_tail=NULL; 1344 1345 /* We take the system default */ 1346 ret->session_timeout=meth->get_timeout(); 1347 1348 ret->new_session_cb=0; 1349 ret->remove_session_cb=0; 1350 ret->get_session_cb=0; 1351 ret->generate_session_id=0; 1352 1353 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1354 1355 ret->references=1; 1356 ret->quiet_shutdown=0; 1357 1358/* ret->cipher=NULL;*/ 1359/* ret->s2->challenge=NULL; 1360 ret->master_key=NULL; 1361 ret->key_arg=NULL; 1362 ret->s2->conn_id=NULL; */ 1363 1364 ret->info_callback=NULL; 1365 1366 ret->app_verify_callback=0; 1367 ret->app_verify_arg=NULL; 1368 1369 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT; 1370 ret->read_ahead=0; 1371 ret->msg_callback=0; 1372 ret->msg_callback_arg=NULL; 1373 ret->verify_mode=SSL_VERIFY_NONE; 1374 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1375 ret->sid_ctx_length=0; 1376 ret->default_verify_callback=NULL; 1377 if ((ret->cert=ssl_cert_new()) == NULL) 1378 goto err; 1379 1380 ret->default_passwd_callback=0; 1381 ret->default_passwd_callback_userdata=NULL; 1382 ret->client_cert_cb=0; 1383 1384 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash), 1385 LHASH_COMP_FN(SSL_SESSION_cmp)); 1386 if (ret->sessions == NULL) goto err; 1387 ret->cert_store=X509_STORE_new(); 1388 if (ret->cert_store == NULL) goto err; 1389 1390 ssl_create_cipher_list(ret->method, 1391 &ret->cipher_list,&ret->cipher_list_by_id, 1392 SSL_DEFAULT_CIPHER_LIST); 1393 if (ret->cipher_list == NULL 1394 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1395 { 1396 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1397 goto err2; 1398 } 1399 1400 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1401 { 1402 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1403 goto err2; 1404 } 1405 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1406 { 1407 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1408 goto err2; 1409 } 1410 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1411 { 1412 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1413 goto err2; 1414 } 1415 1416 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1417 goto err; 1418 1419 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data); 1420 1421 ret->extra_certs=NULL; 1422 ret->comp_methods=SSL_COMP_get_compression_methods(); 1423 1424 return(ret); 1425err: 1426 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1427err2: 1428 if (ret != NULL) SSL_CTX_free(ret); 1429 return(NULL); 1430 } 1431 1432#if 0 1433static void SSL_COMP_free(SSL_COMP *comp) 1434 { OPENSSL_free(comp); } 1435#endif 1436 1437void SSL_CTX_free(SSL_CTX *a) 1438 { 1439 int i; 1440 1441 if (a == NULL) return; 1442 1443 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1444#ifdef REF_PRINT 1445 REF_PRINT("SSL_CTX",a); 1446#endif 1447 if (i > 0) return; 1448#ifdef REF_CHECK 1449 if (i < 0) 1450 { 1451 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1452 abort(); /* ok */ 1453 } 1454#endif 1455 1456 /* 1457 * Free internal session cache. However: the remove_cb() may reference 1458 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1459 * after the sessions were flushed. 1460 * As the ex_data handling routines might also touch the session cache, 1461 * the most secure solution seems to be: empty (flush) the cache, then 1462 * free ex_data, then finally free the cache. 1463 * (See ticket [openssl.org #212].) 1464 */ 1465 if (a->sessions != NULL) 1466 SSL_CTX_flush_sessions(a,0); 1467 1468 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data); 1469 1470 if (a->sessions != NULL) 1471 lh_free(a->sessions); 1472 1473 if (a->cert_store != NULL) 1474 X509_STORE_free(a->cert_store); 1475 if (a->cipher_list != NULL) 1476 sk_SSL_CIPHER_free(a->cipher_list); 1477 if (a->cipher_list_by_id != NULL) 1478 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1479 if (a->cert != NULL) 1480 ssl_cert_free(a->cert); 1481 if (a->client_CA != NULL) 1482 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1483 if (a->extra_certs != NULL) 1484 sk_X509_pop_free(a->extra_certs,X509_free); 1485#if 0 /* This should never be done, since it removes a global database */ 1486 if (a->comp_methods != NULL) 1487 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1488#else 1489 a->comp_methods = NULL; 1490#endif 1491 OPENSSL_free(a); 1492 } 1493 1494void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1495 { 1496 ctx->default_passwd_callback=cb; 1497 } 1498 1499void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1500 { 1501 ctx->default_passwd_callback_userdata=u; 1502 } 1503 1504void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg) 1505 { 1506 ctx->app_verify_callback=cb; 1507 ctx->app_verify_arg=arg; 1508 } 1509 1510void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1511 { 1512 ctx->verify_mode=mode; 1513 ctx->default_verify_callback=cb; 1514 } 1515 1516void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1517 { 1518 ctx->verify_depth=depth; 1519 } 1520 1521void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher) 1522 { 1523 CERT_PKEY *cpk; 1524 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1525 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1526 int rsa_tmp_export,dh_tmp_export,kl; 1527 unsigned long mask,emask; 1528 1529 if (c == NULL) return; 1530 1531 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1532 1533#ifndef OPENSSL_NO_RSA 1534 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1535 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1536 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1537#else 1538 rsa_tmp=rsa_tmp_export=0; 1539#endif 1540#ifndef OPENSSL_NO_DH 1541 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1542 dh_tmp_export=(c->dh_tmp_cb != NULL || 1543 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1544#else 1545 dh_tmp=dh_tmp_export=0; 1546#endif 1547 1548 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1549 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1550 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1551 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1552 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1553 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1554 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1555 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1556 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1557 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1558 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1559/* FIX THIS EAY EAY EAY */ 1560 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1561 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1562 1563 mask=0; 1564 emask=0; 1565 1566#ifdef CIPHER_DEBUG 1567 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1568 rsa_tmp,rsa_tmp_export,dh_tmp, 1569 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1570#endif 1571 1572 if (rsa_enc || (rsa_tmp && rsa_sign)) 1573 mask|=SSL_kRSA; 1574 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1575 emask|=SSL_kRSA; 1576 1577#if 0 1578 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1579 if ( (dh_tmp || dh_rsa || dh_dsa) && 1580 (rsa_enc || rsa_sign || dsa_sign)) 1581 mask|=SSL_kEDH; 1582 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1583 (rsa_enc || rsa_sign || dsa_sign)) 1584 emask|=SSL_kEDH; 1585#endif 1586 1587 if (dh_tmp_export) 1588 emask|=SSL_kEDH; 1589 1590 if (dh_tmp) 1591 mask|=SSL_kEDH; 1592 1593 if (dh_rsa) mask|=SSL_kDHr; 1594 if (dh_rsa_export) emask|=SSL_kDHr; 1595 1596 if (dh_dsa) mask|=SSL_kDHd; 1597 if (dh_dsa_export) emask|=SSL_kDHd; 1598 1599 if (rsa_enc || rsa_sign) 1600 { 1601 mask|=SSL_aRSA; 1602 emask|=SSL_aRSA; 1603 } 1604 1605 if (dsa_sign) 1606 { 1607 mask|=SSL_aDSS; 1608 emask|=SSL_aDSS; 1609 } 1610 1611 mask|=SSL_aNULL; 1612 emask|=SSL_aNULL; 1613 1614#ifndef OPENSSL_NO_KRB5 1615 mask|=SSL_kKRB5|SSL_aKRB5; 1616 emask|=SSL_kKRB5|SSL_aKRB5; 1617#endif 1618 1619 c->mask=mask; 1620 c->export_mask=emask; 1621 c->valid=1; 1622 } 1623 1624/* THIS NEEDS CLEANING UP */ 1625X509 *ssl_get_server_send_cert(SSL *s) 1626 { 1627 unsigned long alg,mask,kalg; 1628 CERT *c; 1629 int i,is_export; 1630 1631 c=s->cert; 1632 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 1633 alg=s->s3->tmp.new_cipher->algorithms; 1634 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); 1635 mask=is_export?c->export_mask:c->mask; 1636 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK); 1637 1638 if (kalg & SSL_kDHr) 1639 i=SSL_PKEY_DH_RSA; 1640 else if (kalg & SSL_kDHd) 1641 i=SSL_PKEY_DH_DSA; 1642 else if (kalg & SSL_aDSS) 1643 i=SSL_PKEY_DSA_SIGN; 1644 else if (kalg & SSL_aRSA) 1645 { 1646 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 1647 i=SSL_PKEY_RSA_SIGN; 1648 else 1649 i=SSL_PKEY_RSA_ENC; 1650 } 1651 else if (kalg & SSL_aKRB5) 1652 { 1653 /* VRS something else here? */ 1654 return(NULL); 1655 } 1656 else /* if (kalg & SSL_aNULL) */ 1657 { 1658 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR); 1659 return(NULL); 1660 } 1661 if (c->pkeys[i].x509 == NULL) return(NULL); 1662 return(c->pkeys[i].x509); 1663 } 1664 1665EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher) 1666 { 1667 unsigned long alg; 1668 CERT *c; 1669 1670 alg=cipher->algorithms; 1671 c=s->cert; 1672 1673 if ((alg & SSL_aDSS) && 1674 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 1675 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 1676 else if (alg & SSL_aRSA) 1677 { 1678 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 1679 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 1680 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 1681 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 1682 else 1683 return(NULL); 1684 } 1685 else /* if (alg & SSL_aNULL) */ 1686 { 1687 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR); 1688 return(NULL); 1689 } 1690 } 1691 1692void ssl_update_cache(SSL *s,int mode) 1693 { 1694 int i; 1695 1696 /* If the session_id_length is 0, we are not supposed to cache it, 1697 * and it would be rather hard to do anyway :-) */ 1698 if (s->session->session_id_length == 0) return; 1699 1700 i=s->ctx->session_cache_mode; 1701 if ((i & mode) && (!s->hit) 1702 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 1703 || SSL_CTX_add_session(s->ctx,s->session)) 1704 && (s->ctx->new_session_cb != NULL)) 1705 { 1706 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 1707 if (!s->ctx->new_session_cb(s,s->session)) 1708 SSL_SESSION_free(s->session); 1709 } 1710 1711 /* auto flush every 255 connections */ 1712 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 1713 ((i & mode) == mode)) 1714 { 1715 if ( (((mode & SSL_SESS_CACHE_CLIENT) 1716 ?s->ctx->stats.sess_connect_good 1717 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff) 1718 { 1719 SSL_CTX_flush_sessions(s->ctx,(unsigned long)time(NULL)); 1720 } 1721 } 1722 } 1723 1724SSL_METHOD *SSL_get_ssl_method(SSL *s) 1725 { 1726 return(s->method); 1727 } 1728 1729int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth) 1730 { 1731 int conn= -1; 1732 int ret=1; 1733 1734 if (s->method != meth) 1735 { 1736 if (s->handshake_func != NULL) 1737 conn=(s->handshake_func == s->method->ssl_connect); 1738 1739 if (s->method->version == meth->version) 1740 s->method=meth; 1741 else 1742 { 1743 s->method->ssl_free(s); 1744 s->method=meth; 1745 ret=s->method->ssl_new(s); 1746 } 1747 1748 if (conn == 1) 1749 s->handshake_func=meth->ssl_connect; 1750 else if (conn == 0) 1751 s->handshake_func=meth->ssl_accept; 1752 } 1753 return(ret); 1754 } 1755 1756int SSL_get_error(const SSL *s,int i) 1757 { 1758 int reason; 1759 unsigned long l; 1760 BIO *bio; 1761 1762 if (i > 0) return(SSL_ERROR_NONE); 1763 1764 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 1765 * etc, where we do encode the error */ 1766 if ((l=ERR_peek_error()) != 0) 1767 { 1768 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 1769 return(SSL_ERROR_SYSCALL); 1770 else 1771 return(SSL_ERROR_SSL); 1772 } 1773 1774 if ((i < 0) && SSL_want_read(s)) 1775 { 1776 bio=SSL_get_rbio(s); 1777 if (BIO_should_read(bio)) 1778 return(SSL_ERROR_WANT_READ); 1779 else if (BIO_should_write(bio)) 1780 /* This one doesn't make too much sense ... We never try 1781 * to write to the rbio, and an application program where 1782 * rbio and wbio are separate couldn't even know what it 1783 * should wait for. 1784 * However if we ever set s->rwstate incorrectly 1785 * (so that we have SSL_want_read(s) instead of 1786 * SSL_want_write(s)) and rbio and wbio *are* the same, 1787 * this test works around that bug; so it might be safer 1788 * to keep it. */ 1789 return(SSL_ERROR_WANT_WRITE); 1790 else if (BIO_should_io_special(bio)) 1791 { 1792 reason=BIO_get_retry_reason(bio); 1793 if (reason == BIO_RR_CONNECT) 1794 return(SSL_ERROR_WANT_CONNECT); 1795 else if (reason == BIO_RR_ACCEPT) 1796 return(SSL_ERROR_WANT_ACCEPT); 1797 else 1798 return(SSL_ERROR_SYSCALL); /* unknown */ 1799 } 1800 } 1801 1802 if ((i < 0) && SSL_want_write(s)) 1803 { 1804 bio=SSL_get_wbio(s); 1805 if (BIO_should_write(bio)) 1806 return(SSL_ERROR_WANT_WRITE); 1807 else if (BIO_should_read(bio)) 1808 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 1809 return(SSL_ERROR_WANT_READ); 1810 else if (BIO_should_io_special(bio)) 1811 { 1812 reason=BIO_get_retry_reason(bio); 1813 if (reason == BIO_RR_CONNECT) 1814 return(SSL_ERROR_WANT_CONNECT); 1815 else if (reason == BIO_RR_ACCEPT) 1816 return(SSL_ERROR_WANT_ACCEPT); 1817 else 1818 return(SSL_ERROR_SYSCALL); 1819 } 1820 } 1821 if ((i < 0) && SSL_want_x509_lookup(s)) 1822 { 1823 return(SSL_ERROR_WANT_X509_LOOKUP); 1824 } 1825 1826 if (i == 0) 1827 { 1828 if (s->version == SSL2_VERSION) 1829 { 1830 /* assume it is the socket being closed */ 1831 return(SSL_ERROR_ZERO_RETURN); 1832 } 1833 else 1834 { 1835 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 1836 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 1837 return(SSL_ERROR_ZERO_RETURN); 1838 } 1839 } 1840 return(SSL_ERROR_SYSCALL); 1841 } 1842 1843int SSL_do_handshake(SSL *s) 1844 { 1845 int ret=1; 1846 1847 if (s->handshake_func == NULL) 1848 { 1849 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 1850 return(-1); 1851 } 1852 1853 s->method->ssl_renegotiate_check(s); 1854 1855 if (SSL_in_init(s) || SSL_in_before(s)) 1856 { 1857 ret=s->handshake_func(s); 1858 } 1859 return(ret); 1860 } 1861 1862/* For the next 2 functions, SSL_clear() sets shutdown and so 1863 * one of these calls will reset it */ 1864void SSL_set_accept_state(SSL *s) 1865 { 1866 s->server=1; 1867 s->shutdown=0; 1868 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 1869 s->handshake_func=s->method->ssl_accept; 1870 /* clear the current cipher */ 1871 ssl_clear_cipher_ctx(s); 1872 } 1873 1874void SSL_set_connect_state(SSL *s) 1875 { 1876 s->server=0; 1877 s->shutdown=0; 1878 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 1879 s->handshake_func=s->method->ssl_connect; 1880 /* clear the current cipher */ 1881 ssl_clear_cipher_ctx(s); 1882 } 1883 1884int ssl_undefined_function(SSL *s) 1885 { 1886 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1887 return(0); 1888 } 1889 1890int ssl_undefined_const_function(const SSL *s) 1891 { 1892 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1893 return(0); 1894 } 1895 1896SSL_METHOD *ssl_bad_method(int ver) 1897 { 1898 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1899 return(NULL); 1900 } 1901 1902const char *SSL_get_version(const SSL *s) 1903 { 1904 if (s->version == TLS1_VERSION) 1905 return("TLSv1"); 1906 else if (s->version == SSL3_VERSION) 1907 return("SSLv3"); 1908 else if (s->version == SSL2_VERSION) 1909 return("SSLv2"); 1910 else 1911 return("unknown"); 1912 } 1913 1914SSL *SSL_dup(SSL *s) 1915 { 1916 STACK_OF(X509_NAME) *sk; 1917 X509_NAME *xn; 1918 SSL *ret; 1919 int i; 1920 1921 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 1922 return(NULL); 1923 1924 ret->version = s->version; 1925 ret->type = s->type; 1926 ret->method = s->method; 1927 1928 if (s->session != NULL) 1929 { 1930 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 1931 SSL_copy_session_id(ret,s); 1932 } 1933 else 1934 { 1935 /* No session has been established yet, so we have to expect 1936 * that s->cert or ret->cert will be changed later -- 1937 * they should not both point to the same object, 1938 * and thus we can't use SSL_copy_session_id. */ 1939 1940 ret->method->ssl_free(ret); 1941 ret->method = s->method; 1942 ret->method->ssl_new(ret); 1943 1944 if (s->cert != NULL) 1945 { 1946 if (ret->cert != NULL) 1947 { 1948 ssl_cert_free(ret->cert); 1949 } 1950 ret->cert = ssl_cert_dup(s->cert); 1951 if (ret->cert == NULL) 1952 goto err; 1953 } 1954 1955 SSL_set_session_id_context(ret, 1956 s->sid_ctx, s->sid_ctx_length); 1957 } 1958 1959 ret->options=s->options; 1960 ret->mode=s->mode; 1961 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s)); 1962 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 1963 ret->msg_callback = s->msg_callback; 1964 ret->msg_callback_arg = s->msg_callback_arg; 1965 SSL_set_verify(ret,SSL_get_verify_mode(s), 1966 SSL_get_verify_callback(s)); 1967 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 1968 ret->generate_session_id = s->generate_session_id; 1969 1970 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 1971 1972 ret->debug=s->debug; 1973 1974 /* copy app data, a little dangerous perhaps */ 1975 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data)) 1976 goto err; 1977 1978 /* setup rbio, and wbio */ 1979 if (s->rbio != NULL) 1980 { 1981 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 1982 goto err; 1983 } 1984 if (s->wbio != NULL) 1985 { 1986 if (s->wbio != s->rbio) 1987 { 1988 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 1989 goto err; 1990 } 1991 else 1992 ret->wbio=ret->rbio; 1993 } 1994 ret->rwstate = s->rwstate; 1995 ret->in_handshake = s->in_handshake; 1996 ret->handshake_func = s->handshake_func; 1997 ret->server = s->server; 1998 ret->new_session = s->new_session; 1999 ret->quiet_shutdown = s->quiet_shutdown; 2000 ret->shutdown=s->shutdown; 2001 ret->state=s->state; /* SSL_dup does not really work at any state, though */ 2002 ret->rstate=s->rstate; 2003 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */ 2004 ret->hit=s->hit; 2005 ret->purpose=s->purpose; 2006 ret->trust=s->trust; 2007 2008 /* dup the cipher_list and cipher_list_by_id stacks */ 2009 if (s->cipher_list != NULL) 2010 { 2011 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2012 goto err; 2013 } 2014 if (s->cipher_list_by_id != NULL) 2015 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 2016 == NULL) 2017 goto err; 2018 2019 /* Dup the client_CA list */ 2020 if (s->client_CA != NULL) 2021 { 2022 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 2023 ret->client_CA=sk; 2024 for (i=0; i<sk_X509_NAME_num(sk); i++) 2025 { 2026 xn=sk_X509_NAME_value(sk,i); 2027 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 2028 { 2029 X509_NAME_free(xn); 2030 goto err; 2031 } 2032 } 2033 } 2034 2035 if (0) 2036 { 2037err: 2038 if (ret != NULL) SSL_free(ret); 2039 ret=NULL; 2040 } 2041 return(ret); 2042 } 2043 2044void ssl_clear_cipher_ctx(SSL *s) 2045 { 2046 if (s->enc_read_ctx != NULL) 2047 { 2048 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 2049 OPENSSL_free(s->enc_read_ctx); 2050 s->enc_read_ctx=NULL; 2051 } 2052 if (s->enc_write_ctx != NULL) 2053 { 2054 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 2055 OPENSSL_free(s->enc_write_ctx); 2056 s->enc_write_ctx=NULL; 2057 } 2058 if (s->expand != NULL) 2059 { 2060 COMP_CTX_free(s->expand); 2061 s->expand=NULL; 2062 } 2063 if (s->compress != NULL) 2064 { 2065 COMP_CTX_free(s->compress); 2066 s->compress=NULL; 2067 } 2068 } 2069 2070/* Fix this function so that it takes an optional type parameter */ 2071X509 *SSL_get_certificate(const SSL *s) 2072 { 2073 if (s->cert != NULL) 2074 return(s->cert->key->x509); 2075 else 2076 return(NULL); 2077 } 2078 2079/* Fix this function so that it takes an optional type parameter */ 2080EVP_PKEY *SSL_get_privatekey(SSL *s) 2081 { 2082 if (s->cert != NULL) 2083 return(s->cert->key->privatekey); 2084 else 2085 return(NULL); 2086 } 2087 2088SSL_CIPHER *SSL_get_current_cipher(const SSL *s) 2089 { 2090 if ((s->session != NULL) && (s->session->cipher != NULL)) 2091 return(s->session->cipher); 2092 return(NULL); 2093 } 2094 2095int ssl_init_wbio_buffer(SSL *s,int push) 2096 { 2097 BIO *bbio; 2098 2099 if (s->bbio == NULL) 2100 { 2101 bbio=BIO_new(BIO_f_buffer()); 2102 if (bbio == NULL) return(0); 2103 s->bbio=bbio; 2104 } 2105 else 2106 { 2107 bbio=s->bbio; 2108 if (s->bbio == s->wbio) 2109 s->wbio=BIO_pop(s->wbio); 2110 } 2111 (void)BIO_reset(bbio); 2112/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2113 if (!BIO_set_read_buffer_size(bbio,1)) 2114 { 2115 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 2116 return(0); 2117 } 2118 if (push) 2119 { 2120 if (s->wbio != bbio) 2121 s->wbio=BIO_push(bbio,s->wbio); 2122 } 2123 else 2124 { 2125 if (s->wbio == bbio) 2126 s->wbio=BIO_pop(bbio); 2127 } 2128 return(1); 2129 } 2130 2131void ssl_free_wbio_buffer(SSL *s) 2132 { 2133 if (s->bbio == NULL) return; 2134 2135 if (s->bbio == s->wbio) 2136 { 2137 /* remove buffering */ 2138 s->wbio=BIO_pop(s->wbio); 2139#ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */ 2140 assert(s->wbio != NULL); 2141#endif 2142 } 2143 BIO_free(s->bbio); 2144 s->bbio=NULL; 2145 } 2146 2147void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 2148 { 2149 ctx->quiet_shutdown=mode; 2150 } 2151 2152int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2153 { 2154 return(ctx->quiet_shutdown); 2155 } 2156 2157void SSL_set_quiet_shutdown(SSL *s,int mode) 2158 { 2159 s->quiet_shutdown=mode; 2160 } 2161 2162int SSL_get_quiet_shutdown(const SSL *s) 2163 { 2164 return(s->quiet_shutdown); 2165 } 2166 2167void SSL_set_shutdown(SSL *s,int mode) 2168 { 2169 s->shutdown=mode; 2170 } 2171 2172int SSL_get_shutdown(const SSL *s) 2173 { 2174 return(s->shutdown); 2175 } 2176 2177int SSL_version(const SSL *s) 2178 { 2179 return(s->version); 2180 } 2181 2182SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl) 2183 { 2184 return(ssl->ctx); 2185 } 2186 2187#ifndef OPENSSL_NO_STDIO 2188int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2189 { 2190 return(X509_STORE_set_default_paths(ctx->cert_store)); 2191 } 2192 2193int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2194 const char *CApath) 2195 { 2196 int r; 2197 r=X509_STORE_load_locations(ctx->cert_store,CAfile,CApath); 2198 return r; 2199 } 2200#endif 2201 2202void SSL_set_info_callback(SSL *ssl, 2203 void (*cb)(const SSL *ssl,int type,int val)) 2204 { 2205 ssl->info_callback=cb; 2206 } 2207 2208void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,int type,int val) 2209 { 2210 return ssl->info_callback; 2211 } 2212 2213int SSL_state(const SSL *ssl) 2214 { 2215 return(ssl->state); 2216 } 2217 2218void SSL_set_verify_result(SSL *ssl,long arg) 2219 { 2220 ssl->verify_result=arg; 2221 } 2222 2223long SSL_get_verify_result(const SSL *ssl) 2224 { 2225 return(ssl->verify_result); 2226 } 2227 2228int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2229 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2230 { 2231 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2232 new_func, dup_func, free_func); 2233 } 2234 2235int SSL_set_ex_data(SSL *s,int idx,void *arg) 2236 { 2237 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2238 } 2239 2240void *SSL_get_ex_data(const SSL *s,int idx) 2241 { 2242 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2243 } 2244 2245int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 2246 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 2247 { 2248 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2249 new_func, dup_func, free_func); 2250 } 2251 2252int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 2253 { 2254 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 2255 } 2256 2257void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx) 2258 { 2259 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 2260 } 2261 2262int ssl_ok(SSL *s) 2263 { 2264 return(1); 2265 } 2266 2267X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2268 { 2269 return(ctx->cert_store); 2270 } 2271 2272void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 2273 { 2274 if (ctx->cert_store != NULL) 2275 X509_STORE_free(ctx->cert_store); 2276 ctx->cert_store=store; 2277 } 2278 2279int SSL_want(const SSL *s) 2280 { 2281 return(s->rwstate); 2282 } 2283 2284/*! 2285 * \brief Set the callback for generating temporary RSA keys. 2286 * \param ctx the SSL context. 2287 * \param cb the callback 2288 */ 2289 2290#ifndef OPENSSL_NO_RSA 2291void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2292 int is_export, 2293 int keylength)) 2294 { 2295 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2296 } 2297 2298void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2299 int is_export, 2300 int keylength)) 2301 { 2302 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2303 } 2304#endif 2305 2306#ifdef DOXYGEN 2307/*! 2308 * \brief The RSA temporary key callback function. 2309 * \param ssl the SSL session. 2310 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2311 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2312 * of the required key in bits. 2313 * \return the temporary RSA key. 2314 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2315 */ 2316 2317RSA *cb(SSL *ssl,int is_export,int keylength) 2318 {} 2319#endif 2320 2321/*! 2322 * \brief Set the callback for generating temporary DH keys. 2323 * \param ctx the SSL context. 2324 * \param dh the callback 2325 */ 2326 2327#ifndef OPENSSL_NO_DH 2328void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2329 int keylength)) 2330 { 2331 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2332 } 2333 2334void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2335 int keylength)) 2336 { 2337 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2338 } 2339#endif 2340 2341 2342void 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)) 2343 { 2344 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2345 } 2346void 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)) 2347 { 2348 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb); 2349 } 2350 2351 2352 2353#if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16) 2354#include "../crypto/bio/bss_file.c" 2355#endif 2356 2357IMPLEMENT_STACK_OF(SSL_CIPHER) 2358IMPLEMENT_STACK_OF(SSL_COMP) 2359