552 lines
14 KiB
C
552 lines
14 KiB
C
/*
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* SSL server demonstration program
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*
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* Copyright (C) 2006-2011, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _CRT_SECURE_NO_DEPRECATE
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#define _CRT_SECURE_NO_DEPRECATE 1
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#endif
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#if defined(_WIN32)
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#include <windows.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "polarssl/config.h"
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#include "polarssl/entropy.h"
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#include "polarssl/ctr_drbg.h"
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#include "polarssl/certs.h"
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#include "polarssl/x509.h"
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#include "polarssl/ssl.h"
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#include "polarssl/net.h"
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#include "polarssl/error.h"
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#define HTTP_RESPONSE \
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"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
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"<h2>PolarSSL Test Server</h2>\r\n" \
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"<p>Successful connection using: %s</p>\r\n"
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/*
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* Computing a "safe" DH-1024 prime can take a very
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* long time, so a precomputed value is provided below.
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* You may run dh_genprime to generate a new value.
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*/
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char *my_dhm_P =
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"E4004C1F94182000103D883A448B3F80" \
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"2CE4B44A83301270002C20D0321CFD00" \
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"11CCEF784C26A400F43DFB901BCA7538" \
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"F2C6B176001CF5A0FD16D2C48B1D0C1C" \
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"F6AC8E1DA6BCC3B4E1F96B0564965300" \
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"FFA1D0B601EB2800F489AA512C4B248C" \
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"01F76949A60BB7F00A40B1EAB64BDD48" \
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"E8A700D60B7F1200FA8E77B0A979DABF";
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char *my_dhm_G = "4";
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/*
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* Sorted by order of preference
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*/
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int my_ciphersuites[] =
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{
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#if defined(POLARSSL_DHM_C)
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#if defined(POLARSSL_AES_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_EDH_RSA_AES_256_SHA256,
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SSL_EDH_RSA_AES_128_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_EDH_RSA_AES_256_SHA,
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SSL_EDH_RSA_AES_128_SHA,
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#if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA4_C)
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SSL_EDH_RSA_AES_256_GCM_SHA384,
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#endif
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#if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA2_C)
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SSL_EDH_RSA_AES_128_GCM_SHA256,
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#endif
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#endif
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#if defined(POLARSSL_CAMELLIA_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_EDH_RSA_CAMELLIA_256_SHA256,
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SSL_EDH_RSA_CAMELLIA_128_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_EDH_RSA_CAMELLIA_256_SHA,
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SSL_EDH_RSA_CAMELLIA_128_SHA,
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#endif
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#if defined(POLARSSL_DES_C)
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SSL_EDH_RSA_DES_168_SHA,
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#endif
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#endif
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#if defined(POLARSSL_AES_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_RSA_AES_256_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_RSA_AES_256_SHA,
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#endif
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#if defined(POLARSSL_CAMELLIA_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_RSA_CAMELLIA_256_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_RSA_CAMELLIA_256_SHA,
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#endif
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#if defined(POLARSSL_AES_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_RSA_AES_128_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_RSA_AES_128_SHA,
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#if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA4_C)
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SSL_RSA_AES_256_GCM_SHA384,
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#endif
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#if defined(POLARSSL_GCM_C) && defined(POLARSSL_SHA2_C)
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SSL_RSA_AES_128_GCM_SHA256,
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#endif
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#endif
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#if defined(POLARSSL_CAMELLIA_C)
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#if defined(POLARSSL_SHA2_C)
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SSL_RSA_CAMELLIA_128_SHA256,
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#endif /* POLARSSL_SHA2_C */
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SSL_RSA_CAMELLIA_128_SHA,
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#endif
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#if defined(POLARSSL_DES_C)
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SSL_RSA_DES_168_SHA,
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#endif
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#if defined(POLARSSL_ARC4_C)
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SSL_RSA_RC4_128_SHA,
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SSL_RSA_RC4_128_MD5,
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#endif
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#if defined(POLARSSL_ENABLE_WEAK_CIPHERSUITES)
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#if defined(POLARSSL_DES_C)
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SSL_EDH_RSA_DES_SHA,
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SSL_RSA_DES_SHA,
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#endif
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#if defined(POLARSSL_CIPHER_NULL_CIPHER)
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SSL_RSA_NULL_MD5,
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SSL_RSA_NULL_SHA,
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SSL_RSA_NULL_SHA256,
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#endif
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#endif
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0
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};
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#define DEBUG_LEVEL 0
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void my_debug( void *ctx, int level, const char *str )
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{
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if( level < DEBUG_LEVEL )
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{
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fprintf( (FILE *) ctx, "%s", str );
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fflush( (FILE *) ctx );
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}
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}
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/*
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* These session callbacks use a simple chained list
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* to store and retrieve the session information.
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*/
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ssl_session *s_list_1st = NULL;
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ssl_session *cur, *prv;
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static int my_get_session( ssl_context *ssl )
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{
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time_t t = time( NULL );
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if( ssl->resume == 0 )
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return( 1 );
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cur = s_list_1st;
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prv = NULL;
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while( cur != NULL )
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{
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prv = cur;
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cur = cur->next;
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if( ssl->timeout != 0 && (int) ( t - prv->start ) > ssl->timeout )
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continue;
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if( ssl->session->ciphersuite != prv->ciphersuite ||
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ssl->session->length != prv->length )
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continue;
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if( memcmp( ssl->session->id, prv->id, prv->length ) != 0 )
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continue;
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memcpy( ssl->session->master, prv->master, 48 );
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return( 0 );
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}
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return( 1 );
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}
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static int my_set_session( ssl_context *ssl )
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{
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time_t t = time( NULL );
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cur = s_list_1st;
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prv = NULL;
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while( cur != NULL )
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{
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if( ssl->timeout != 0 && (int) ( t - cur->start ) > ssl->timeout )
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break; /* expired, reuse this slot */
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if( memcmp( ssl->session->id, cur->id, cur->length ) == 0 )
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break; /* client reconnected */
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prv = cur;
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cur = cur->next;
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}
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if( cur == NULL )
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{
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cur = (ssl_session *) malloc( sizeof( ssl_session ) );
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if( cur == NULL )
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return( 1 );
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if( prv == NULL )
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s_list_1st = cur;
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else prv->next = cur;
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}
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memcpy( cur, ssl->session, sizeof( ssl_session ) );
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return( 0 );
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}
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#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_CERTS_C) || \
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!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_SSL_TLS_C) || \
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!defined(POLARSSL_SSL_SRV_C) || !defined(POLARSSL_NET_C) || \
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!defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C)
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int main( int argc, char *argv[] )
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{
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((void) argc);
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((void) argv);
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printf("POLARSSL_BIGNUM_C and/or POLARSSL_CERTS_C and/or POLARSSL_ENTROPY_C "
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"and/or POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
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"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
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"POLARSSL_CTR_DRBG_C not defined.\n");
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return( 0 );
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}
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#else
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int main( int argc, char *argv[] )
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{
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int ret, len;
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int listen_fd;
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int client_fd = -1;
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unsigned char buf[1024];
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char *pers = "ssl_server";
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entropy_context entropy;
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ctr_drbg_context ctr_drbg;
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ssl_context ssl;
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ssl_session ssn;
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x509_cert srvcert;
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rsa_context rsa;
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((void) argc);
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((void) argv);
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memset( &ssl, 0, sizeof( ssl_context ) );
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/*
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* 1. Load the certificates and private RSA key
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*/
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printf( "\n . Loading the server cert. and key..." );
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fflush( stdout );
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memset( &srvcert, 0, sizeof( x509_cert ) );
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/*
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* This demonstration program uses embedded test certificates.
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* Instead, you may want to use x509parse_crtfile() to read the
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* server and CA certificates, as well as x509parse_keyfile().
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*/
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ret = x509parse_crt( &srvcert, (unsigned char *) test_srv_crt,
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strlen( test_srv_crt ) );
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if( ret != 0 )
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{
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printf( " failed\n ! x509parse_crt returned %d\n\n", ret );
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goto exit;
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}
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ret = x509parse_crt( &srvcert, (unsigned char *) test_ca_crt,
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strlen( test_ca_crt ) );
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if( ret != 0 )
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{
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printf( " failed\n ! x509parse_crt returned %d\n\n", ret );
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goto exit;
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}
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rsa_init( &rsa, RSA_PKCS_V15, 0 );
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ret = x509parse_key( &rsa, (unsigned char *) test_srv_key,
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strlen( test_srv_key ), NULL, 0 );
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if( ret != 0 )
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{
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printf( " failed\n ! x509parse_key returned %d\n\n", ret );
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goto exit;
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}
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printf( " ok\n" );
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/*
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* 2. Setup the listening TCP socket
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*/
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printf( " . Bind on https://localhost:4433/ ..." );
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fflush( stdout );
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if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 )
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{
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printf( " failed\n ! net_bind returned %d\n\n", ret );
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goto exit;
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}
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printf( " ok\n" );
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/*
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* 3. Seed the RNG
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*/
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printf( " . Seeding the random number generator..." );
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fflush( stdout );
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entropy_init( &entropy );
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if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
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(unsigned char *) pers, strlen( pers ) ) ) != 0 )
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{
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printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
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goto exit;
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}
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printf( " ok\n" );
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/*
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* 4. Setup stuff
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*/
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printf( " . Setting up the SSL data...." );
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fflush( stdout );
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if( ( ret = ssl_init( &ssl ) ) != 0 )
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{
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printf( " failed\n ! ssl_init returned %d\n\n", ret );
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goto exit;
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}
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ssl_set_endpoint( &ssl, SSL_IS_SERVER );
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ssl_set_authmode( &ssl, SSL_VERIFY_NONE );
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ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
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ssl_set_dbg( &ssl, my_debug, stdout );
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ssl_set_scb( &ssl, my_get_session,
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my_set_session );
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ssl_set_ciphersuites( &ssl, my_ciphersuites );
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ssl_set_session( &ssl, 1, 0, &ssn );
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memset( &ssn, 0, sizeof( ssl_session ) );
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ssl_set_ca_chain( &ssl, srvcert.next, NULL, NULL );
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ssl_set_own_cert( &ssl, &srvcert, &rsa );
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#if defined(POLARSSL_DHM_C)
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ssl_set_dh_param( &ssl, my_dhm_P, my_dhm_G );
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#endif
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printf( " ok\n" );
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reset:
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#ifdef POLARSSL_ERROR_C
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if( ret != 0 )
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{
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char error_buf[100];
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error_strerror( ret, error_buf, 100 );
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printf("Last error was: %d - %s\n\n", ret, error_buf );
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}
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#endif
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if( client_fd != -1 )
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net_close( client_fd );
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ssl_session_reset( &ssl );
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/*
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* 3. Wait until a client connects
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*/
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#if defined(_WIN32_WCE)
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{
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SHELLEXECUTEINFO sei;
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ZeroMemory( &sei, sizeof( SHELLEXECUTEINFO ) );
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sei.cbSize = sizeof( SHELLEXECUTEINFO );
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sei.fMask = 0;
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sei.hwnd = 0;
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sei.lpVerb = _T( "open" );
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sei.lpFile = _T( "https://localhost:4433/" );
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sei.lpParameters = NULL;
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sei.lpDirectory = NULL;
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sei.nShow = SW_SHOWNORMAL;
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ShellExecuteEx( &sei );
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}
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#elif defined(_WIN32)
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ShellExecute( NULL, "open", "https://localhost:4433/",
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NULL, NULL, SW_SHOWNORMAL );
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#endif
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client_fd = -1;
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printf( " . Waiting for a remote connection ..." );
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fflush( stdout );
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if( ( ret = net_accept( listen_fd, &client_fd, NULL ) ) != 0 )
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{
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printf( " failed\n ! net_accept returned %d\n\n", ret );
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goto exit;
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}
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ssl_set_bio( &ssl, net_recv, &client_fd,
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net_send, &client_fd );
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printf( " ok\n" );
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/*
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* 5. Handshake
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*/
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printf( " . Performing the SSL/TLS handshake..." );
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fflush( stdout );
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while( ( ret = ssl_handshake( &ssl ) ) != 0 )
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{
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if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
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{
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printf( " failed\n ! ssl_handshake returned %d\n\n", ret );
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goto reset;
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}
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}
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printf( " ok\n" );
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/*
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* 6. Read the HTTP Request
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*/
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printf( " < Read from client:" );
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fflush( stdout );
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do
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{
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len = sizeof( buf ) - 1;
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memset( buf, 0, sizeof( buf ) );
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ret = ssl_read( &ssl, buf, len );
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if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE )
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continue;
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if( ret <= 0 )
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{
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switch( ret )
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{
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case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY:
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printf( " connection was closed gracefully\n" );
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break;
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case POLARSSL_ERR_NET_CONN_RESET:
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printf( " connection was reset by peer\n" );
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break;
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default:
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printf( " ssl_read returned -0x%x\n", -ret );
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break;
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}
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break;
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}
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len = ret;
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printf( " %d bytes read\n\n%s", len, (char *) buf );
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if( ret > 0 )
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break;
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}
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while( 1 );
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/*
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* 7. Write the 200 Response
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*/
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printf( " > Write to client:" );
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fflush( stdout );
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len = sprintf( (char *) buf, HTTP_RESPONSE,
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ssl_get_ciphersuite( &ssl ) );
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while( ( ret = ssl_write( &ssl, buf, len ) ) <= 0 )
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{
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if( ret == POLARSSL_ERR_NET_CONN_RESET )
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{
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printf( " failed\n ! peer closed the connection\n\n" );
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goto reset;
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}
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if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
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{
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printf( " failed\n ! ssl_write returned %d\n\n", ret );
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goto exit;
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}
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}
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len = ret;
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printf( " %d bytes written\n\n%s\n", len, (char *) buf );
|
|
|
|
ret = 0;
|
|
goto reset;
|
|
|
|
exit:
|
|
|
|
#ifdef POLARSSL_ERROR_C
|
|
if( ret != 0 )
|
|
{
|
|
char error_buf[100];
|
|
error_strerror( ret, error_buf, 100 );
|
|
printf("Last error was: %d - %s\n\n", ret, error_buf );
|
|
}
|
|
#endif
|
|
|
|
net_close( client_fd );
|
|
x509_free( &srvcert );
|
|
rsa_free( &rsa );
|
|
ssl_session_free( &ssn );
|
|
ssl_session_free( s_list_1st );
|
|
ssl_free( &ssl );
|
|
|
|
#if defined(_WIN32)
|
|
printf( " Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* POLARSSL_BIGNUM_C && POLARSSL_CERTS_C && POLARSSL_ENTROPY_C &&
|
|
POLARSSL_SSL_TLS_C && POLARSSL_SSL_SRV_C && POLARSSL_NET_C &&
|
|
POLARSSL_RSA_C && POLARSSL_CTR_DRBG_C */
|