ssl_lib.c revision 1.4
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#include <stdio.h> 62#include <openssl/objects.h> 63#include <openssl/lhash.h> 64#include <openssl/x509v3.h> 65#include "ssl_locl.h" 66 67const char *SSL_version_str=OPENSSL_VERSION_TEXT; 68 69static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL; 70static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL; 71static int ssl_meth_num=0; 72static int ssl_ctx_meth_num=0; 73 74OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={ 75 /* evil casts, but these functions are only called if there's a library bug */ 76 (int (*)(SSL *,int))ssl_undefined_function, 77 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function, 78 ssl_undefined_function, 79 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function, 80 (int (*)(SSL*, int))ssl_undefined_function, 81 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function 82 }; 83 84int SSL_clear(SSL *s) 85 { 86 int state; 87 88 if (s->method == NULL) 89 { 90 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED); 91 return(0); 92 } 93 94 s->error=0; 95 s->hit=0; 96 s->shutdown=0; 97 98#if 0 /* Disabled since version 1.10 of this file (early return not 99 * needed because SSL_clear is not called when doing renegotiation) */ 100 /* This is set if we are doing dynamic renegotiation so keep 101 * the old cipher. It is sort of a SSL_clear_lite :-) */ 102 if (s->new_session) return(1); 103#else 104 if (s->new_session) 105 { 106 SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR); 107 return 0; 108 } 109#endif 110 111 state=s->state; /* Keep to check if we throw away the session-id */ 112 s->type=0; 113 114 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT); 115 116 s->version=s->method->version; 117 s->client_version=s->version; 118 s->rwstate=SSL_NOTHING; 119 s->rstate=SSL_ST_READ_HEADER; 120 s->read_ahead=s->ctx->read_ahead; 121 122 if (s->init_buf != NULL) 123 { 124 BUF_MEM_free(s->init_buf); 125 s->init_buf=NULL; 126 } 127 128 ssl_clear_cipher_ctx(s); 129 130 if (ssl_clear_bad_session(s)) 131 { 132 SSL_SESSION_free(s->session); 133 s->session=NULL; 134 } 135 136 s->first_packet=0; 137 138#if 1 139 /* Check to see if we were changed into a different method, if 140 * so, revert back if we are not doing session-id reuse. */ 141 if ((s->session == NULL) && (s->method != s->ctx->method)) 142 { 143 s->method->ssl_free(s); 144 s->method=s->ctx->method; 145 if (!s->method->ssl_new(s)) 146 return(0); 147 } 148 else 149#endif 150 s->method->ssl_clear(s); 151 return(1); 152 } 153 154/** Used to change an SSL_CTXs default SSL method type */ 155int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth) 156 { 157 STACK_OF(SSL_CIPHER) *sk; 158 159 ctx->method=meth; 160 161 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list), 162 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST); 163 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) 164 { 165 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 166 return(0); 167 } 168 return(1); 169 } 170 171SSL *SSL_new(SSL_CTX *ctx) 172 { 173 SSL *s; 174 175 if (ctx == NULL) 176 { 177 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX); 178 return(NULL); 179 } 180 if (ctx->method == NULL) 181 { 182 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 183 return(NULL); 184 } 185 186 s=(SSL *)Malloc(sizeof(SSL)); 187 if (s == NULL) goto err; 188 memset(s,0,sizeof(SSL)); 189 190 if (ctx->cert != NULL) 191 { 192 /* Earlier library versions used to copy the pointer to 193 * the CERT, not its contents; only when setting new 194 * parameters for the per-SSL copy, ssl_cert_new would be 195 * called (and the direct reference to the per-SSL_CTX 196 * settings would be lost, but those still were indirectly 197 * accessed for various purposes, and for that reason they 198 * used to be known as s->ctx->default_cert). 199 * Now we don't look at the SSL_CTX's CERT after having 200 * duplicated it once. */ 201 202 s->cert = ssl_cert_dup(ctx->cert); 203 if (s->cert == NULL) 204 goto err; 205 } 206 else 207 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 208 s->sid_ctx_length=ctx->sid_ctx_length; 209 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx)); 210 s->verify_mode=ctx->verify_mode; 211 s->verify_depth=ctx->verify_depth; 212 s->verify_callback=ctx->default_verify_callback; 213 s->purpose = ctx->purpose; 214 s->trust = ctx->trust; 215 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX); 216 s->ctx=ctx; 217 218 s->verify_result=X509_V_OK; 219 220 s->method=ctx->method; 221 222 if (!s->method->ssl_new(s)) 223 goto err; 224 225 s->quiet_shutdown=ctx->quiet_shutdown; 226 s->references=1; 227 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1; 228 s->options=ctx->options; 229 s->mode=ctx->mode; 230 SSL_clear(s); 231 232 CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data); 233 234 return(s); 235err: 236 if (s != NULL) 237 { 238 if (s->cert != NULL) 239 ssl_cert_free(s->cert); 240 if (s->ctx != NULL) 241 SSL_CTX_free(s->ctx); /* decrement reference count */ 242 Free(s); 243 } 244 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE); 245 return(NULL); 246 } 247 248int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx, 249 unsigned int sid_ctx_len) 250 { 251 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 252 { 253 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 254 return 0; 255 } 256 ctx->sid_ctx_length=sid_ctx_len; 257 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len); 258 259 return 1; 260 } 261 262int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx, 263 unsigned int sid_ctx_len) 264 { 265 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 266 { 267 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 268 return 0; 269 } 270 ssl->sid_ctx_length=sid_ctx_len; 271 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len); 272 273 return 1; 274 } 275 276int SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 277{ 278 if(X509_PURPOSE_get_by_id(purpose) == -1) { 279 SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE); 280 return 0; 281 } 282 s->purpose = purpose; 283 return 1; 284} 285 286int SSL_set_purpose(SSL *s, int purpose) 287{ 288 if(X509_PURPOSE_get_by_id(purpose) == -1) { 289 SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE); 290 return 0; 291 } 292 s->purpose = purpose; 293 return 1; 294} 295 296int SSL_CTX_set_trust(SSL_CTX *s, int trust) 297{ 298 if(X509_TRUST_get_by_id(trust) == -1) { 299 SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST); 300 return 0; 301 } 302 s->trust = trust; 303 return 1; 304} 305 306int SSL_set_trust(SSL *s, int trust) 307{ 308 if(X509_TRUST_get_by_id(trust) == -1) { 309 SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST); 310 return 0; 311 } 312 s->trust = trust; 313 return 1; 314} 315 316void SSL_free(SSL *s) 317 { 318 int i; 319 320 if(s == NULL) 321 return; 322 323 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL); 324#ifdef REF_PRINT 325 REF_PRINT("SSL",s); 326#endif 327 if (i > 0) return; 328#ifdef REF_CHECK 329 if (i < 0) 330 { 331 fprintf(stderr,"SSL_free, bad reference count\n"); 332 abort(); /* ok */ 333 } 334#endif 335 336 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data); 337 338 if (s->bbio != NULL) 339 { 340 /* If the buffering BIO is in place, pop it off */ 341 if (s->bbio == s->wbio) 342 { 343 s->wbio=BIO_pop(s->wbio); 344 } 345 BIO_free(s->bbio); 346 s->bbio=NULL; 347 } 348 if (s->rbio != NULL) 349 BIO_free_all(s->rbio); 350 if ((s->wbio != NULL) && (s->wbio != s->rbio)) 351 BIO_free_all(s->wbio); 352 353 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf); 354 355 /* add extra stuff */ 356 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list); 357 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id); 358 359 /* Make the next call work :-) */ 360 if (s->session != NULL) 361 { 362 ssl_clear_bad_session(s); 363 SSL_SESSION_free(s->session); 364 } 365 366 ssl_clear_cipher_ctx(s); 367 368 if (s->cert != NULL) ssl_cert_free(s->cert); 369 /* Free up if allocated */ 370 371 if (s->ctx) SSL_CTX_free(s->ctx); 372 373 if (s->client_CA != NULL) 374 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free); 375 376 if (s->method != NULL) s->method->ssl_free(s); 377 378 Free(s); 379 } 380 381void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio) 382 { 383 /* If the output buffering BIO is still in place, remove it 384 */ 385 if (s->bbio != NULL) 386 { 387 if (s->wbio == s->bbio) 388 { 389 s->wbio=s->wbio->next_bio; 390 s->bbio->next_bio=NULL; 391 } 392 } 393 if ((s->rbio != NULL) && (s->rbio != rbio)) 394 BIO_free_all(s->rbio); 395 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio)) 396 BIO_free_all(s->wbio); 397 s->rbio=rbio; 398 s->wbio=wbio; 399 } 400 401BIO *SSL_get_rbio(SSL *s) 402 { return(s->rbio); } 403 404BIO *SSL_get_wbio(SSL *s) 405 { return(s->wbio); } 406 407int SSL_get_fd(SSL *s) 408 { 409 int ret= -1; 410 BIO *b,*r; 411 412 b=SSL_get_rbio(s); 413 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR); 414 if (r != NULL) 415 BIO_get_fd(r,&ret); 416 return(ret); 417 } 418 419#ifndef NO_SOCK 420int SSL_set_fd(SSL *s,int fd) 421 { 422 int ret=0; 423 BIO *bio=NULL; 424 425 bio=BIO_new(BIO_s_socket()); 426 427 if (bio == NULL) 428 { 429 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB); 430 goto err; 431 } 432 BIO_set_fd(bio,fd,BIO_NOCLOSE); 433 SSL_set_bio(s,bio,bio); 434 ret=1; 435err: 436 return(ret); 437 } 438 439int SSL_set_wfd(SSL *s,int fd) 440 { 441 int ret=0; 442 BIO *bio=NULL; 443 444 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 445 || ((int)BIO_get_fd(s->rbio,NULL) != fd)) 446 { 447 bio=BIO_new(BIO_s_socket()); 448 449 if (bio == NULL) 450 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; } 451 BIO_set_fd(bio,fd,BIO_NOCLOSE); 452 SSL_set_bio(s,SSL_get_rbio(s),bio); 453 } 454 else 455 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s)); 456 ret=1; 457err: 458 return(ret); 459 } 460 461int SSL_set_rfd(SSL *s,int fd) 462 { 463 int ret=0; 464 BIO *bio=NULL; 465 466 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 467 || ((int)BIO_get_fd(s->wbio,NULL) != fd)) 468 { 469 bio=BIO_new(BIO_s_socket()); 470 471 if (bio == NULL) 472 { 473 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB); 474 goto err; 475 } 476 BIO_set_fd(bio,fd,BIO_NOCLOSE); 477 SSL_set_bio(s,bio,SSL_get_wbio(s)); 478 } 479 else 480 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s)); 481 ret=1; 482err: 483 return(ret); 484 } 485#endif 486 487 488/* return length of latest Finished message we sent, copy to 'buf' */ 489size_t SSL_get_finished(SSL *s, void *buf, size_t count) 490 { 491 size_t ret = 0; 492 493 if (s->s3 != NULL) 494 { 495 ret = s->s3->tmp.finish_md_len; 496 if (count > ret) 497 count = ret; 498 memcpy(buf, s->s3->tmp.finish_md, count); 499 } 500 return ret; 501 } 502 503/* return length of latest Finished message we expected, copy to 'buf' */ 504size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count) 505 { 506 size_t ret = 0; 507 508 if (s->s3 != NULL) 509 { 510 ret = s->s3->tmp.peer_finish_md_len; 511 if (count > ret) 512 count = ret; 513 memcpy(buf, s->s3->tmp.peer_finish_md, count); 514 } 515 return ret; 516 } 517 518 519int SSL_get_verify_mode(SSL *s) 520 { 521 return(s->verify_mode); 522 } 523 524int SSL_get_verify_depth(SSL *s) 525 { 526 return(s->verify_depth); 527 } 528 529int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *) 530 { 531 return(s->verify_callback); 532 } 533 534int SSL_CTX_get_verify_mode(SSL_CTX *ctx) 535 { 536 return(ctx->verify_mode); 537 } 538 539int SSL_CTX_get_verify_depth(SSL_CTX *ctx) 540 { 541 return(ctx->verify_depth); 542 } 543 544int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *) 545 { 546 return(ctx->default_verify_callback); 547 } 548 549void SSL_set_verify(SSL *s,int mode, 550 int (*callback)(int ok,X509_STORE_CTX *ctx)) 551 { 552 s->verify_mode=mode; 553 if (callback != NULL) 554 s->verify_callback=callback; 555 } 556 557void SSL_set_verify_depth(SSL *s,int depth) 558 { 559 s->verify_depth=depth; 560 } 561 562void SSL_set_read_ahead(SSL *s,int yes) 563 { 564 s->read_ahead=yes; 565 } 566 567int SSL_get_read_ahead(SSL *s) 568 { 569 return(s->read_ahead); 570 } 571 572int SSL_pending(SSL *s) 573 { 574 return(s->method->ssl_pending(s)); 575 } 576 577X509 *SSL_get_peer_certificate(SSL *s) 578 { 579 X509 *r; 580 581 if ((s == NULL) || (s->session == NULL)) 582 r=NULL; 583 else 584 r=s->session->peer; 585 586 if (r == NULL) return(r); 587 588 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509); 589 590 return(r); 591 } 592 593STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s) 594 { 595 STACK_OF(X509) *r; 596 597 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL)) 598 r=NULL; 599 else 600 r=s->session->sess_cert->cert_chain; 601 602 /* If we are a client, cert_chain includes the peer's own 603 * certificate; if we are a server, it does not. */ 604 605 return(r); 606 } 607 608/* Now in theory, since the calling process own 't' it should be safe to 609 * modify. We need to be able to read f without being hassled */ 610void SSL_copy_session_id(SSL *t,SSL *f) 611 { 612 CERT *tmp; 613 614 /* Do we need to to SSL locking? */ 615 SSL_set_session(t,SSL_get_session(f)); 616 617 /* what if we are setup as SSLv2 but want to talk SSLv3 or 618 * vice-versa */ 619 if (t->method != f->method) 620 { 621 t->method->ssl_free(t); /* cleanup current */ 622 t->method=f->method; /* change method */ 623 t->method->ssl_new(t); /* setup new */ 624 } 625 626 tmp=t->cert; 627 if (f->cert != NULL) 628 { 629 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT); 630 t->cert=f->cert; 631 } 632 else 633 t->cert=NULL; 634 if (tmp != NULL) ssl_cert_free(tmp); 635 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length); 636 } 637 638/* Fix this so it checks all the valid key/cert options */ 639int SSL_CTX_check_private_key(SSL_CTX *ctx) 640 { 641 if ( (ctx == NULL) || 642 (ctx->cert == NULL) || 643 (ctx->cert->key->x509 == NULL)) 644 { 645 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 646 return(0); 647 } 648 if (ctx->cert->key->privatekey == NULL) 649 { 650 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 651 return(0); 652 } 653 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey)); 654 } 655 656/* Fix this function so that it takes an optional type parameter */ 657int SSL_check_private_key(SSL *ssl) 658 { 659 if (ssl == NULL) 660 { 661 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER); 662 return(0); 663 } 664 if (ssl->cert == NULL) 665 { 666 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 667 return 0; 668 } 669 if (ssl->cert->key->x509 == NULL) 670 { 671 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED); 672 return(0); 673 } 674 if (ssl->cert->key->privatekey == NULL) 675 { 676 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED); 677 return(0); 678 } 679 return(X509_check_private_key(ssl->cert->key->x509, 680 ssl->cert->key->privatekey)); 681 } 682 683int SSL_accept(SSL *s) 684 { 685 if (s->handshake_func == 0) 686 /* Not properly initialized yet */ 687 SSL_set_accept_state(s); 688 689 return(s->method->ssl_accept(s)); 690 } 691 692int SSL_connect(SSL *s) 693 { 694 if (s->handshake_func == 0) 695 /* Not properly initialized yet */ 696 SSL_set_connect_state(s); 697 698 return(s->method->ssl_connect(s)); 699 } 700 701long SSL_get_default_timeout(SSL *s) 702 { 703 return(s->method->get_timeout()); 704 } 705 706int SSL_read(SSL *s,char *buf,int num) 707 { 708 if (s->handshake_func == 0) 709 { 710 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED); 711 return -1; 712 } 713 714 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 715 { 716 s->rwstate=SSL_NOTHING; 717 return(0); 718 } 719 return(s->method->ssl_read(s,buf,num)); 720 } 721 722int SSL_peek(SSL *s,char *buf,int num) 723 { 724 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 725 { 726 return(0); 727 } 728 return(s->method->ssl_peek(s,buf,num)); 729 } 730 731int SSL_write(SSL *s,const char *buf,int num) 732 { 733 if (s->handshake_func == 0) 734 { 735 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED); 736 return -1; 737 } 738 739 if (s->shutdown & SSL_SENT_SHUTDOWN) 740 { 741 s->rwstate=SSL_NOTHING; 742 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN); 743 return(-1); 744 } 745 return(s->method->ssl_write(s,buf,num)); 746 } 747 748int SSL_shutdown(SSL *s) 749 { 750 /* Note that this function behaves differently from what one might 751 * expect. Return values are 0 for no success (yet), 752 * 1 for success; but calling it once is usually not enough, 753 * even if blocking I/O is used (see ssl3_shutdown). 754 */ 755 756 if (s->handshake_func == 0) 757 { 758 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED); 759 return -1; 760 } 761 762 if ((s != NULL) && !SSL_in_init(s)) 763 return(s->method->ssl_shutdown(s)); 764 else 765 return(1); 766 } 767 768int SSL_renegotiate(SSL *s) 769 { 770 s->new_session=1; 771 return(s->method->ssl_renegotiate(s)); 772 } 773 774long SSL_ctrl(SSL *s,int cmd,long larg,char *parg) 775 { 776 long l; 777 778 switch (cmd) 779 { 780 case SSL_CTRL_GET_READ_AHEAD: 781 return(s->read_ahead); 782 case SSL_CTRL_SET_READ_AHEAD: 783 l=s->read_ahead; 784 s->read_ahead=larg; 785 return(l); 786 case SSL_CTRL_OPTIONS: 787 return(s->options|=larg); 788 case SSL_CTRL_MODE: 789 return(s->mode|=larg); 790 default: 791 return(s->method->ssl_ctrl(s,cmd,larg,parg)); 792 } 793 } 794 795long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)()) 796 { 797 switch(cmd) 798 { 799 default: 800 return(s->method->ssl_callback_ctrl(s,cmd,fp)); 801 } 802 } 803 804struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx) 805 { 806 return ctx->sessions; 807 } 808 809long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg) 810 { 811 long l; 812 813 switch (cmd) 814 { 815 case SSL_CTRL_GET_READ_AHEAD: 816 return(ctx->read_ahead); 817 case SSL_CTRL_SET_READ_AHEAD: 818 l=ctx->read_ahead; 819 ctx->read_ahead=larg; 820 return(l); 821 822 case SSL_CTRL_SET_SESS_CACHE_SIZE: 823 l=ctx->session_cache_size; 824 ctx->session_cache_size=larg; 825 return(l); 826 case SSL_CTRL_GET_SESS_CACHE_SIZE: 827 return(ctx->session_cache_size); 828 case SSL_CTRL_SET_SESS_CACHE_MODE: 829 l=ctx->session_cache_mode; 830 ctx->session_cache_mode=larg; 831 return(l); 832 case SSL_CTRL_GET_SESS_CACHE_MODE: 833 return(ctx->session_cache_mode); 834 835 case SSL_CTRL_SESS_NUMBER: 836 return(ctx->sessions->num_items); 837 case SSL_CTRL_SESS_CONNECT: 838 return(ctx->stats.sess_connect); 839 case SSL_CTRL_SESS_CONNECT_GOOD: 840 return(ctx->stats.sess_connect_good); 841 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 842 return(ctx->stats.sess_connect_renegotiate); 843 case SSL_CTRL_SESS_ACCEPT: 844 return(ctx->stats.sess_accept); 845 case SSL_CTRL_SESS_ACCEPT_GOOD: 846 return(ctx->stats.sess_accept_good); 847 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 848 return(ctx->stats.sess_accept_renegotiate); 849 case SSL_CTRL_SESS_HIT: 850 return(ctx->stats.sess_hit); 851 case SSL_CTRL_SESS_CB_HIT: 852 return(ctx->stats.sess_cb_hit); 853 case SSL_CTRL_SESS_MISSES: 854 return(ctx->stats.sess_miss); 855 case SSL_CTRL_SESS_TIMEOUTS: 856 return(ctx->stats.sess_timeout); 857 case SSL_CTRL_SESS_CACHE_FULL: 858 return(ctx->stats.sess_cache_full); 859 case SSL_CTRL_OPTIONS: 860 return(ctx->options|=larg); 861 case SSL_CTRL_MODE: 862 return(ctx->mode|=larg); 863 default: 864 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg)); 865 } 866 } 867 868long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)()) 869 { 870 switch(cmd) 871 { 872 default: 873 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp)); 874 } 875 } 876 877int ssl_cipher_id_cmp(SSL_CIPHER *a,SSL_CIPHER *b) 878 { 879 long l; 880 881 l=a->id-b->id; 882 if (l == 0L) 883 return(0); 884 else 885 return((l > 0)?1:-1); 886 } 887 888int ssl_cipher_ptr_id_cmp(SSL_CIPHER **ap,SSL_CIPHER **bp) 889 { 890 long l; 891 892 l=(*ap)->id-(*bp)->id; 893 if (l == 0L) 894 return(0); 895 else 896 return((l > 0)?1:-1); 897 } 898 899/** return a STACK of the ciphers available for the SSL and in order of 900 * preference */ 901STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s) 902 { 903 if ((s != NULL) && (s->cipher_list != NULL)) 904 { 905 return(s->cipher_list); 906 } 907 else if ((s->ctx != NULL) && 908 (s->ctx->cipher_list != NULL)) 909 { 910 return(s->ctx->cipher_list); 911 } 912 return(NULL); 913 } 914 915/** return a STACK of the ciphers available for the SSL and in order of 916 * algorithm id */ 917STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s) 918 { 919 if ((s != NULL) && (s->cipher_list_by_id != NULL)) 920 { 921 return(s->cipher_list_by_id); 922 } 923 else if ((s != NULL) && (s->ctx != NULL) && 924 (s->ctx->cipher_list_by_id != NULL)) 925 { 926 return(s->ctx->cipher_list_by_id); 927 } 928 return(NULL); 929 } 930 931/** The old interface to get the same thing as SSL_get_ciphers() */ 932const char *SSL_get_cipher_list(SSL *s,int n) 933 { 934 SSL_CIPHER *c; 935 STACK_OF(SSL_CIPHER) *sk; 936 937 if (s == NULL) return(NULL); 938 sk=SSL_get_ciphers(s); 939 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 940 return(NULL); 941 c=sk_SSL_CIPHER_value(sk,n); 942 if (c == NULL) return(NULL); 943 return(c->name); 944 } 945 946/** specify the ciphers to be used by default by the SSL_CTX */ 947int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 948 { 949 STACK_OF(SSL_CIPHER) *sk; 950 951 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list, 952 &ctx->cipher_list_by_id,str); 953/* XXXX */ 954 return((sk == NULL)?0:1); 955 } 956 957/** specify the ciphers to be used by the SSL */ 958int SSL_set_cipher_list(SSL *s,const char *str) 959 { 960 STACK_OF(SSL_CIPHER) *sk; 961 962 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list, 963 &s->cipher_list_by_id,str); 964/* XXXX */ 965 return((sk == NULL)?0:1); 966 } 967 968/* works well for SSLv2, not so good for SSLv3 */ 969char *SSL_get_shared_ciphers(SSL *s,char *buf,int len) 970 { 971 char *p; 972 const char *cp; 973 STACK_OF(SSL_CIPHER) *sk; 974 SSL_CIPHER *c; 975 int i; 976 977 if ((s->session == NULL) || (s->session->ciphers == NULL) || 978 (len < 2)) 979 return(NULL); 980 981 p=buf; 982 sk=s->session->ciphers; 983 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 984 { 985 /* Decrement for either the ':' or a '\0' */ 986 len--; 987 c=sk_SSL_CIPHER_value(sk,i); 988 for (cp=c->name; *cp; ) 989 { 990 if (len-- == 0) 991 { 992 *p='\0'; 993 return(buf); 994 } 995 else 996 *(p++)= *(cp++); 997 } 998 *(p++)=':'; 999 } 1000 p[-1]='\0'; 1001 return(buf); 1002 } 1003 1004int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p) 1005 { 1006 int i,j=0; 1007 SSL_CIPHER *c; 1008 unsigned char *q; 1009 1010 if (sk == NULL) return(0); 1011 q=p; 1012 1013 for (i=0; i<sk_SSL_CIPHER_num(sk); i++) 1014 { 1015 c=sk_SSL_CIPHER_value(sk,i); 1016 j=ssl_put_cipher_by_char(s,c,p); 1017 p+=j; 1018 } 1019 return(p-q); 1020 } 1021 1022STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num, 1023 STACK_OF(SSL_CIPHER) **skp) 1024 { 1025 SSL_CIPHER *c; 1026 STACK_OF(SSL_CIPHER) *sk; 1027 int i,n; 1028 1029 n=ssl_put_cipher_by_char(s,NULL,NULL); 1030 if ((num%n) != 0) 1031 { 1032 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1033 return(NULL); 1034 } 1035 if ((skp == NULL) || (*skp == NULL)) 1036 sk=sk_SSL_CIPHER_new(NULL); /* change perhaps later */ 1037 else 1038 { 1039 sk= *skp; 1040 sk_SSL_CIPHER_zero(sk); 1041 } 1042 1043 for (i=0; i<num; i+=n) 1044 { 1045 c=ssl_get_cipher_by_char(s,p); 1046 p+=n; 1047 if (c != NULL) 1048 { 1049 if (!sk_SSL_CIPHER_push(sk,c)) 1050 { 1051 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1052 goto err; 1053 } 1054 } 1055 } 1056 1057 if (skp != NULL) 1058 *skp=sk; 1059 return(sk); 1060err: 1061 if ((skp == NULL) || (*skp == NULL)) 1062 sk_SSL_CIPHER_free(sk); 1063 return(NULL); 1064 } 1065 1066unsigned long SSL_SESSION_hash(SSL_SESSION *a) 1067 { 1068 unsigned long l; 1069 1070 l=(unsigned long) 1071 ((unsigned int) a->session_id[0] )| 1072 ((unsigned int) a->session_id[1]<< 8L)| 1073 ((unsigned long)a->session_id[2]<<16L)| 1074 ((unsigned long)a->session_id[3]<<24L); 1075 return(l); 1076 } 1077 1078int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b) 1079 { 1080 if (a->ssl_version != b->ssl_version) 1081 return(1); 1082 if (a->session_id_length != b->session_id_length) 1083 return(1); 1084 return(memcmp(a->session_id,b->session_id,a->session_id_length)); 1085 } 1086 1087SSL_CTX *SSL_CTX_new(SSL_METHOD *meth) 1088 { 1089 SSL_CTX *ret=NULL; 1090 1091 if (meth == NULL) 1092 { 1093 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED); 1094 return(NULL); 1095 } 1096 1097 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) 1098 { 1099 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1100 goto err; 1101 } 1102 ret=(SSL_CTX *)Malloc(sizeof(SSL_CTX)); 1103 if (ret == NULL) 1104 goto err; 1105 1106 memset(ret,0,sizeof(SSL_CTX)); 1107 1108 ret->method=meth; 1109 1110 ret->cert_store=NULL; 1111 ret->session_cache_mode=SSL_SESS_CACHE_SERVER; 1112 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1113 ret->session_cache_head=NULL; 1114 ret->session_cache_tail=NULL; 1115 1116 /* We take the system default */ 1117 ret->session_timeout=meth->get_timeout(); 1118 1119 ret->new_session_cb=NULL; 1120 ret->remove_session_cb=NULL; 1121 ret->get_session_cb=NULL; 1122 1123 memset((char *)&ret->stats,0,sizeof(ret->stats)); 1124 1125 ret->references=1; 1126 ret->quiet_shutdown=0; 1127 1128/* ret->cipher=NULL;*/ 1129/* ret->s2->challenge=NULL; 1130 ret->master_key=NULL; 1131 ret->key_arg=NULL; 1132 ret->s2->conn_id=NULL; */ 1133 1134 ret->info_callback=NULL; 1135 1136 ret->app_verify_callback=NULL; 1137 ret->app_verify_arg=NULL; 1138 1139 ret->read_ahead=0; 1140 ret->verify_mode=SSL_VERIFY_NONE; 1141 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */ 1142 ret->default_verify_callback=NULL; 1143 if ((ret->cert=ssl_cert_new()) == NULL) 1144 goto err; 1145 1146 ret->default_passwd_callback=NULL; 1147 ret->default_passwd_callback_userdata=NULL; 1148 ret->client_cert_cb=NULL; 1149 1150 ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp); 1151 if (ret->sessions == NULL) goto err; 1152 ret->cert_store=X509_STORE_new(); 1153 if (ret->cert_store == NULL) goto err; 1154 1155 ssl_create_cipher_list(ret->method, 1156 &ret->cipher_list,&ret->cipher_list_by_id, 1157 SSL_DEFAULT_CIPHER_LIST); 1158 if (ret->cipher_list == NULL 1159 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) 1160 { 1161 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS); 1162 goto err2; 1163 } 1164 1165 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL) 1166 { 1167 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES); 1168 goto err2; 1169 } 1170 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL) 1171 { 1172 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES); 1173 goto err2; 1174 } 1175 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL) 1176 { 1177 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES); 1178 goto err2; 1179 } 1180 1181 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL) 1182 goto err; 1183 1184 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data); 1185 1186 ret->extra_certs=NULL; 1187 ret->comp_methods=SSL_COMP_get_compression_methods(); 1188 1189 return(ret); 1190err: 1191 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE); 1192err2: 1193 if (ret != NULL) SSL_CTX_free(ret); 1194 return(NULL); 1195 } 1196 1197static void SSL_COMP_free(SSL_COMP *comp) 1198 { Free(comp); } 1199 1200void SSL_CTX_free(SSL_CTX *a) 1201 { 1202 int i; 1203 1204 if (a == NULL) return; 1205 1206 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX); 1207#ifdef REF_PRINT 1208 REF_PRINT("SSL_CTX",a); 1209#endif 1210 if (i > 0) return; 1211#ifdef REF_CHECK 1212 if (i < 0) 1213 { 1214 fprintf(stderr,"SSL_CTX_free, bad reference count\n"); 1215 abort(); /* ok */ 1216 } 1217#endif 1218 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data); 1219 1220 if (a->sessions != NULL) 1221 { 1222 SSL_CTX_flush_sessions(a,0); 1223 lh_free(a->sessions); 1224 } 1225 if (a->cert_store != NULL) 1226 X509_STORE_free(a->cert_store); 1227 if (a->cipher_list != NULL) 1228 sk_SSL_CIPHER_free(a->cipher_list); 1229 if (a->cipher_list_by_id != NULL) 1230 sk_SSL_CIPHER_free(a->cipher_list_by_id); 1231 if (a->cert != NULL) 1232 ssl_cert_free(a->cert); 1233 if (a->client_CA != NULL) 1234 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free); 1235 if (a->extra_certs != NULL) 1236 sk_X509_pop_free(a->extra_certs,X509_free); 1237 if (a->comp_methods != NULL) 1238 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free); 1239 Free(a); 1240 } 1241 1242void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 1243 { 1244 ctx->default_passwd_callback=cb; 1245 } 1246 1247void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u) 1248 { 1249 ctx->default_passwd_callback_userdata=u; 1250 } 1251 1252void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg) 1253 { 1254 /* now 1255 * int (*cb)(X509_STORE_CTX *), 1256 * but should be 1257 * int (*cb)(X509_STORE_CTX *, void *arg) 1258 */ 1259 ctx->app_verify_callback=cb; 1260 ctx->app_verify_arg=arg; /* never used */ 1261 } 1262 1263void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *)) 1264 { 1265 ctx->verify_mode=mode; 1266 ctx->default_verify_callback=cb; 1267 /* This needs cleaning up EAY EAY EAY */ 1268 X509_STORE_set_verify_cb_func(ctx->cert_store,cb); 1269 } 1270 1271void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) 1272 { 1273 ctx->verify_depth=depth; 1274 } 1275 1276void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher) 1277 { 1278 CERT_PKEY *cpk; 1279 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign; 1280 int rsa_enc_export,dh_rsa_export,dh_dsa_export; 1281 int rsa_tmp_export,dh_tmp_export,kl; 1282 unsigned long mask,emask; 1283 1284 if (c == NULL) return; 1285 1286 kl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1287 1288#ifndef NO_RSA 1289 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL); 1290 rsa_tmp_export=(c->rsa_tmp_cb != NULL || 1291 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl)); 1292#else 1293 rsa_tmp=rsa_tmp_export=0; 1294#endif 1295#ifndef NO_DH 1296 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL); 1297 dh_tmp_export=(c->dh_tmp_cb != NULL || 1298 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl)); 1299#else 1300 dh_tmp=dh_tmp_export=0; 1301#endif 1302 1303 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]); 1304 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL); 1305 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1306 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]); 1307 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1308 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]); 1309 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL); 1310 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]); 1311 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1312 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1313 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]); 1314/* FIX THIS EAY EAY EAY */ 1315 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL); 1316 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl); 1317 1318 mask=0; 1319 emask=0; 1320 1321#ifdef CIPHER_DEBUG 1322 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n", 1323 rsa_tmp,rsa_tmp_export,dh_tmp, 1324 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa); 1325#endif 1326 1327 if (rsa_enc || (rsa_tmp && rsa_sign)) 1328 mask|=SSL_kRSA; 1329 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc))) 1330 emask|=SSL_kRSA; 1331 1332#if 0 1333 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */ 1334 if ( (dh_tmp || dh_rsa || dh_dsa) && 1335 (rsa_enc || rsa_sign || dsa_sign)) 1336 mask|=SSL_kEDH; 1337 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) && 1338 (rsa_enc || rsa_sign || dsa_sign)) 1339 emask|=SSL_kEDH; 1340#endif 1341 1342 if (dh_tmp_export) 1343 emask|=SSL_kEDH; 1344 1345 if (dh_tmp) 1346 mask|=SSL_kEDH; 1347 1348 if (dh_rsa) mask|=SSL_kDHr; 1349 if (dh_rsa_export) emask|=SSL_kDHr; 1350 1351 if (dh_dsa) mask|=SSL_kDHd; 1352 if (dh_dsa_export) emask|=SSL_kDHd; 1353 1354 if (rsa_enc || rsa_sign) 1355 { 1356 mask|=SSL_aRSA; 1357 emask|=SSL_aRSA; 1358 } 1359 1360 if (dsa_sign) 1361 { 1362 mask|=SSL_aDSS; 1363 emask|=SSL_aDSS; 1364 } 1365 1366 mask|=SSL_aNULL; 1367 emask|=SSL_aNULL; 1368 1369 c->mask=mask; 1370 c->export_mask=emask; 1371 c->valid=1; 1372 } 1373 1374/* THIS NEEDS CLEANING UP */ 1375X509 *ssl_get_server_send_cert(SSL *s) 1376 { 1377 unsigned long alg,mask,kalg; 1378 CERT *c; 1379 int i,is_export; 1380 1381 c=s->cert; 1382 ssl_set_cert_masks(c, s->s3->tmp.new_cipher); 1383 alg=s->s3->tmp.new_cipher->algorithms; 1384 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); 1385 mask=is_export?c->export_mask:c->mask; 1386 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK); 1387 1388 if (kalg & SSL_kDHr) 1389 i=SSL_PKEY_DH_RSA; 1390 else if (kalg & SSL_kDHd) 1391 i=SSL_PKEY_DH_DSA; 1392 else if (kalg & SSL_aDSS) 1393 i=SSL_PKEY_DSA_SIGN; 1394 else if (kalg & SSL_aRSA) 1395 { 1396 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 1397 i=SSL_PKEY_RSA_SIGN; 1398 else 1399 i=SSL_PKEY_RSA_ENC; 1400 } 1401 else /* if (kalg & SSL_aNULL) */ 1402 { 1403 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR); 1404 return(NULL); 1405 } 1406 if (c->pkeys[i].x509 == NULL) return(NULL); 1407 return(c->pkeys[i].x509); 1408 } 1409 1410EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher) 1411 { 1412 unsigned long alg; 1413 CERT *c; 1414 1415 alg=cipher->algorithms; 1416 c=s->cert; 1417 1418 if ((alg & SSL_aDSS) && 1419 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL)) 1420 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey); 1421 else if (alg & SSL_aRSA) 1422 { 1423 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 1424 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey); 1425 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 1426 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey); 1427 else 1428 return(NULL); 1429 } 1430 else /* if (alg & SSL_aNULL) */ 1431 { 1432 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR); 1433 return(NULL); 1434 } 1435 } 1436 1437void ssl_update_cache(SSL *s,int mode) 1438 { 1439 int i; 1440 1441 /* If the session_id_length is 0, we are not supposed to cache it, 1442 * and it would be rather hard to do anyway :-) */ 1443 if (s->session->session_id_length == 0) return; 1444 1445 if ((s->ctx->session_cache_mode & mode) 1446 && (!s->hit) 1447 && SSL_CTX_add_session(s->ctx,s->session) 1448 && (s->ctx->new_session_cb != NULL)) 1449 { 1450 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION); 1451 if (!s->ctx->new_session_cb(s,s->session)) 1452 SSL_SESSION_free(s->session); 1453 } 1454 1455 /* auto flush every 255 connections */ 1456 i=s->ctx->session_cache_mode; 1457 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 1458 ((i & mode) == mode)) 1459 { 1460 if ( (((mode & SSL_SESS_CACHE_CLIENT) 1461 ?s->ctx->stats.sess_connect_good 1462 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff) 1463 { 1464 SSL_CTX_flush_sessions(s->ctx,time(NULL)); 1465 } 1466 } 1467 } 1468 1469SSL_METHOD *SSL_get_ssl_method(SSL *s) 1470 { 1471 return(s->method); 1472 } 1473 1474int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth) 1475 { 1476 int conn= -1; 1477 int ret=1; 1478 1479 if (s->method != meth) 1480 { 1481 if (s->handshake_func != NULL) 1482 conn=(s->handshake_func == s->method->ssl_connect); 1483 1484 if (s->method->version == meth->version) 1485 s->method=meth; 1486 else 1487 { 1488 s->method->ssl_free(s); 1489 s->method=meth; 1490 ret=s->method->ssl_new(s); 1491 } 1492 1493 if (conn == 1) 1494 s->handshake_func=meth->ssl_connect; 1495 else if (conn == 0) 1496 s->handshake_func=meth->ssl_accept; 1497 } 1498 return(ret); 1499 } 1500 1501int SSL_get_error(SSL *s,int i) 1502 { 1503 int reason; 1504 unsigned long l; 1505 BIO *bio; 1506 1507 if (i > 0) return(SSL_ERROR_NONE); 1508 1509 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 1510 * etc, where we do encode the error */ 1511 if ((l=ERR_peek_error()) != 0) 1512 { 1513 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 1514 return(SSL_ERROR_SYSCALL); 1515 else 1516 return(SSL_ERROR_SSL); 1517 } 1518 1519 if ((i < 0) && SSL_want_read(s)) 1520 { 1521 bio=SSL_get_rbio(s); 1522 if (BIO_should_read(bio)) 1523 return(SSL_ERROR_WANT_READ); 1524 else if (BIO_should_write(bio)) 1525 /* This one doesn't make too much sense ... We never try 1526 * to write to the rbio, and an application program where 1527 * rbio and wbio are separate couldn't even know what it 1528 * should wait for. 1529 * However if we ever set s->rwstate incorrectly 1530 * (so that we have SSL_want_read(s) instead of 1531 * SSL_want_write(s)) and rbio and wbio *are* the same, 1532 * this test works around that bug; so it might be safer 1533 * to keep it. */ 1534 return(SSL_ERROR_WANT_WRITE); 1535 else if (BIO_should_io_special(bio)) 1536 { 1537 reason=BIO_get_retry_reason(bio); 1538 if (reason == BIO_RR_CONNECT) 1539 return(SSL_ERROR_WANT_CONNECT); 1540 else 1541 return(SSL_ERROR_SYSCALL); /* unknown */ 1542 } 1543 } 1544 1545 if ((i < 0) && SSL_want_write(s)) 1546 { 1547 bio=SSL_get_wbio(s); 1548 if (BIO_should_write(bio)) 1549 return(SSL_ERROR_WANT_WRITE); 1550 else if (BIO_should_read(bio)) 1551 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */ 1552 return(SSL_ERROR_WANT_READ); 1553 else if (BIO_should_io_special(bio)) 1554 { 1555 reason=BIO_get_retry_reason(bio); 1556 if (reason == BIO_RR_CONNECT) 1557 return(SSL_ERROR_WANT_CONNECT); 1558 else 1559 return(SSL_ERROR_SYSCALL); 1560 } 1561 } 1562 if ((i < 0) && SSL_want_x509_lookup(s)) 1563 { 1564 return(SSL_ERROR_WANT_X509_LOOKUP); 1565 } 1566 1567 if (i == 0) 1568 { 1569 if (s->version == SSL2_VERSION) 1570 { 1571 /* assume it is the socket being closed */ 1572 return(SSL_ERROR_ZERO_RETURN); 1573 } 1574 else 1575 { 1576 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) && 1577 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY)) 1578 return(SSL_ERROR_ZERO_RETURN); 1579 } 1580 } 1581 return(SSL_ERROR_SYSCALL); 1582 } 1583 1584int SSL_do_handshake(SSL *s) 1585 { 1586 int ret=1; 1587 1588 if (s->handshake_func == NULL) 1589 { 1590 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET); 1591 return(-1); 1592 } 1593 1594 s->method->ssl_renegotiate_check(s); 1595 1596 if (SSL_in_init(s) || SSL_in_before(s)) 1597 { 1598 ret=s->handshake_func(s); 1599 } 1600 return(ret); 1601 } 1602 1603/* For the next 2 functions, SSL_clear() sets shutdown and so 1604 * one of these calls will reset it */ 1605void SSL_set_accept_state(SSL *s) 1606 { 1607 s->server=1; 1608 s->shutdown=0; 1609 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE; 1610 s->handshake_func=s->method->ssl_accept; 1611 /* clear the current cipher */ 1612 ssl_clear_cipher_ctx(s); 1613 } 1614 1615void SSL_set_connect_state(SSL *s) 1616 { 1617 s->server=0; 1618 s->shutdown=0; 1619 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE; 1620 s->handshake_func=s->method->ssl_connect; 1621 /* clear the current cipher */ 1622 ssl_clear_cipher_ctx(s); 1623 } 1624 1625int ssl_undefined_function(SSL *s) 1626 { 1627 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1628 return(0); 1629 } 1630 1631SSL_METHOD *ssl_bad_method(int ver) 1632 { 1633 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 1634 return(NULL); 1635 } 1636 1637const char *SSL_get_version(SSL *s) 1638 { 1639 if (s->version == TLS1_VERSION) 1640 return("TLSv1"); 1641 else if (s->version == SSL3_VERSION) 1642 return("SSLv3"); 1643 else if (s->version == SSL2_VERSION) 1644 return("SSLv2"); 1645 else 1646 return("unknown"); 1647 } 1648 1649SSL *SSL_dup(SSL *s) 1650 { 1651 STACK_OF(X509_NAME) *sk; 1652 X509_NAME *xn; 1653 SSL *ret; 1654 int i; 1655 1656 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) 1657 return(NULL); 1658 1659 if (s->session != NULL) 1660 { 1661 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 1662 SSL_copy_session_id(ret,s); 1663 } 1664 else 1665 { 1666 /* No session has been established yet, so we have to expect 1667 * that s->cert or ret->cert will be changed later -- 1668 * they should not both point to the same object, 1669 * and thus we can't use SSL_copy_session_id. */ 1670 1671 ret->method = s->method; 1672 ret->method->ssl_new(ret); 1673 1674 if (s->cert != NULL) 1675 { 1676 ret->cert = ssl_cert_dup(s->cert); 1677 if (ret->cert == NULL) 1678 goto err; 1679 } 1680 1681 SSL_set_session_id_context(ret, 1682 s->sid_ctx, s->sid_ctx_length); 1683 } 1684 1685 SSL_set_read_ahead(ret,SSL_get_read_ahead(s)); 1686 SSL_set_verify(ret,SSL_get_verify_mode(s), 1687 SSL_get_verify_callback(s)); 1688 SSL_set_verify_depth(ret,SSL_get_verify_depth(s)); 1689 1690 SSL_set_info_callback(ret,SSL_get_info_callback(s)); 1691 1692 ret->debug=s->debug; 1693 ret->options=s->options; 1694 1695 /* copy app data, a little dangerous perhaps */ 1696 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data)) 1697 goto err; 1698 1699 /* setup rbio, and wbio */ 1700 if (s->rbio != NULL) 1701 { 1702 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 1703 goto err; 1704 } 1705 if (s->wbio != NULL) 1706 { 1707 if (s->wbio != s->rbio) 1708 { 1709 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 1710 goto err; 1711 } 1712 else 1713 ret->wbio=ret->rbio; 1714 } 1715 1716 /* dup the cipher_list and cipher_list_by_id stacks */ 1717 if (s->cipher_list != NULL) 1718 { 1719 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 1720 goto err; 1721 } 1722 if (s->cipher_list_by_id != NULL) 1723 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id)) 1724 == NULL) 1725 goto err; 1726 1727 /* Dup the client_CA list */ 1728 if (s->client_CA != NULL) 1729 { 1730 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err; 1731 ret->client_CA=sk; 1732 for (i=0; i<sk_X509_NAME_num(sk); i++) 1733 { 1734 xn=sk_X509_NAME_value(sk,i); 1735 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL) 1736 { 1737 X509_NAME_free(xn); 1738 goto err; 1739 } 1740 } 1741 } 1742 1743 ret->shutdown=s->shutdown; 1744 ret->state=s->state; 1745 ret->handshake_func=s->handshake_func; 1746 ret->server=s->server; 1747 1748 if (0) 1749 { 1750err: 1751 if (ret != NULL) SSL_free(ret); 1752 ret=NULL; 1753 } 1754 return(ret); 1755 } 1756 1757void ssl_clear_cipher_ctx(SSL *s) 1758 { 1759 if (s->enc_read_ctx != NULL) 1760 { 1761 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx); 1762 Free(s->enc_read_ctx); 1763 s->enc_read_ctx=NULL; 1764 } 1765 if (s->enc_write_ctx != NULL) 1766 { 1767 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx); 1768 Free(s->enc_write_ctx); 1769 s->enc_write_ctx=NULL; 1770 } 1771 if (s->expand != NULL) 1772 { 1773 COMP_CTX_free(s->expand); 1774 s->expand=NULL; 1775 } 1776 if (s->compress != NULL) 1777 { 1778 COMP_CTX_free(s->compress); 1779 s->compress=NULL; 1780 } 1781 } 1782 1783/* Fix this function so that it takes an optional type parameter */ 1784X509 *SSL_get_certificate(SSL *s) 1785 { 1786 if (s->cert != NULL) 1787 return(s->cert->key->x509); 1788 else 1789 return(NULL); 1790 } 1791 1792/* Fix this function so that it takes an optional type parameter */ 1793EVP_PKEY *SSL_get_privatekey(SSL *s) 1794 { 1795 if (s->cert != NULL) 1796 return(s->cert->key->privatekey); 1797 else 1798 return(NULL); 1799 } 1800 1801SSL_CIPHER *SSL_get_current_cipher(SSL *s) 1802 { 1803 if ((s->session != NULL) && (s->session->cipher != NULL)) 1804 return(s->session->cipher); 1805 return(NULL); 1806 } 1807 1808int ssl_init_wbio_buffer(SSL *s,int push) 1809 { 1810 BIO *bbio; 1811 1812 if (s->bbio == NULL) 1813 { 1814 bbio=BIO_new(BIO_f_buffer()); 1815 if (bbio == NULL) return(0); 1816 s->bbio=bbio; 1817 } 1818 else 1819 { 1820 bbio=s->bbio; 1821 if (s->bbio == s->wbio) 1822 s->wbio=BIO_pop(s->wbio); 1823 } 1824 (void)BIO_reset(bbio); 1825/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 1826 if (!BIO_set_read_buffer_size(bbio,1)) 1827 { 1828 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB); 1829 return(0); 1830 } 1831 if (push) 1832 { 1833 if (s->wbio != bbio) 1834 s->wbio=BIO_push(bbio,s->wbio); 1835 } 1836 else 1837 { 1838 if (s->wbio == bbio) 1839 s->wbio=BIO_pop(bbio); 1840 } 1841 return(1); 1842 } 1843 1844void ssl_free_wbio_buffer(SSL *s) 1845 { 1846 BIO *under; 1847 1848 if (s->bbio == NULL) return; 1849 1850 if (s->bbio == s->wbio) 1851 { 1852 /* remove buffering */ 1853 under=BIO_pop(s->wbio); 1854 if (under != NULL) 1855 s->wbio=under; 1856 else 1857 abort(); /* ok */ 1858 } 1859 BIO_free(s->bbio); 1860 s->bbio=NULL; 1861 } 1862 1863void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode) 1864 { 1865 ctx->quiet_shutdown=mode; 1866 } 1867 1868int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx) 1869 { 1870 return(ctx->quiet_shutdown); 1871 } 1872 1873void SSL_set_quiet_shutdown(SSL *s,int mode) 1874 { 1875 s->quiet_shutdown=mode; 1876 } 1877 1878int SSL_get_quiet_shutdown(SSL *s) 1879 { 1880 return(s->quiet_shutdown); 1881 } 1882 1883void SSL_set_shutdown(SSL *s,int mode) 1884 { 1885 s->shutdown=mode; 1886 } 1887 1888int SSL_get_shutdown(SSL *s) 1889 { 1890 return(s->shutdown); 1891 } 1892 1893int SSL_version(SSL *s) 1894 { 1895 return(s->version); 1896 } 1897 1898SSL_CTX *SSL_get_SSL_CTX(SSL *ssl) 1899 { 1900 return(ssl->ctx); 1901 } 1902 1903#ifndef NO_STDIO 1904int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 1905 { 1906 return(X509_STORE_set_default_paths(ctx->cert_store)); 1907 } 1908 1909int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 1910 const char *CApath) 1911 { 1912 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath)); 1913 } 1914#endif 1915 1916void SSL_set_info_callback(SSL *ssl,void (*cb)()) 1917 { 1918 ssl->info_callback=cb; 1919 } 1920 1921void (*SSL_get_info_callback(SSL *ssl))(void) 1922 { 1923 return((void (*)())ssl->info_callback); 1924 } 1925 1926int SSL_state(SSL *ssl) 1927 { 1928 return(ssl->state); 1929 } 1930 1931void SSL_set_verify_result(SSL *ssl,long arg) 1932 { 1933 ssl->verify_result=arg; 1934 } 1935 1936long SSL_get_verify_result(SSL *ssl) 1937 { 1938 return(ssl->verify_result); 1939 } 1940 1941int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 1942 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 1943 { 1944 ssl_meth_num++; 1945 return(CRYPTO_get_ex_new_index(ssl_meth_num-1, 1946 &ssl_meth,argl,argp,new_func,dup_func,free_func)); 1947 } 1948 1949int SSL_set_ex_data(SSL *s,int idx,void *arg) 1950 { 1951 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 1952 } 1953 1954void *SSL_get_ex_data(SSL *s,int idx) 1955 { 1956 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 1957 } 1958 1959int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func, 1960 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func) 1961 { 1962 ssl_ctx_meth_num++; 1963 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1, 1964 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func)); 1965 } 1966 1967int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg) 1968 { 1969 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 1970 } 1971 1972void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx) 1973 { 1974 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 1975 } 1976 1977int ssl_ok(SSL *s) 1978 { 1979 return(1); 1980 } 1981 1982X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx) 1983 { 1984 return(ctx->cert_store); 1985 } 1986 1987void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store) 1988 { 1989 if (ctx->cert_store != NULL) 1990 X509_STORE_free(ctx->cert_store); 1991 ctx->cert_store=store; 1992 } 1993 1994int SSL_want(SSL *s) 1995 { 1996 return(s->rwstate); 1997 } 1998 1999/*! 2000 * \brief Set the callback for generating temporary RSA keys. 2001 * \param ctx the SSL context. 2002 * \param cb the callback 2003 */ 2004 2005#ifndef NO_RSA 2006void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl, 2007 int is_export, 2008 int keylength)) 2009 { 2010 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2011 } 2012 2013void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl, 2014 int is_export, 2015 int keylength)) 2016 { 2017 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb); 2018 } 2019#endif 2020 2021#ifdef DOXYGEN 2022/*! 2023 * \brief The RSA temporary key callback function. 2024 * \param ssl the SSL session. 2025 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite. 2026 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size 2027 * of the required key in bits. 2028 * \return the temporary RSA key. 2029 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback 2030 */ 2031 2032RSA *cb(SSL *ssl,int is_export,int keylength) 2033 {} 2034#endif 2035 2036/*! 2037 * \brief Set the callback for generating temporary DH keys. 2038 * \param ctx the SSL context. 2039 * \param dh the callback 2040 */ 2041 2042#ifndef NO_DH 2043void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export, 2044 int keylength)) 2045 { 2046 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2047 } 2048 2049void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export, 2050 int keylength)) 2051 { 2052 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh); 2053 } 2054#endif 2055 2056#if defined(_WINDLL) && defined(WIN16) 2057#include "../crypto/bio/bss_file.c" 2058#endif 2059 2060IMPLEMENT_STACK_OF(SSL_CIPHER) 2061IMPLEMENT_STACK_OF(SSL_COMP) 2062