632 lines
18 KiB
C
632 lines
18 KiB
C
/*
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* SSL client with options
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*
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* Copyright (C) 2006-2012, 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/net.h"
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#include "polarssl/ssl.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/error.h"
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#if defined(POLARSSL_SSL_CACHE_C)
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#include "polarssl/ssl_cache.h"
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#endif
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#define DFL_SERVER_PORT 4433
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#define DFL_REQUEST_PAGE "/"
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#define DFL_DEBUG_LEVEL 0
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#define DFL_CA_FILE ""
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#define DFL_CA_PATH ""
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#define DFL_CRT_FILE ""
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#define DFL_KEY_FILE ""
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#define DFL_FORCE_CIPHER 0
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#define DFL_RENEGOTIATION SSL_RENEGOTIATION_ENABLED
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#define DFL_ALLOW_LEGACY SSL_LEGACY_NO_RENEGOTIATION
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#define DFL_MIN_VERSION -1
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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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* global options
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*/
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struct options
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{
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int server_port; /* port on which the ssl service runs */
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int debug_level; /* level of debugging */
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char *ca_file; /* the file with the CA certificate(s) */
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char *ca_path; /* the path with the CA certificate(s) reside */
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char *crt_file; /* the file with the client certificate */
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char *key_file; /* the file with the client key */
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int force_ciphersuite[2]; /* protocol/ciphersuite to use, or all */
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int renegotiation; /* enable / disable renegotiation */
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int allow_legacy; /* allow legacy renegotiation */
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int min_version; /* minimum protocol version accepted */
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} opt;
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void my_debug( void *ctx, int level, const char *str )
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{
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if( level < opt.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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#if defined(POLARSSL_FS_IO)
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#define USAGE_IO \
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" ca_file=%%s default: \"\" (pre-loaded)\n" \
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" ca_path=%%s default: \"\" (pre-loaded) (overrides ca_file)\n" \
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" crt_file=%%s default: \"\" (pre-loaded)\n" \
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" key_file=%%s default: \"\" (pre-loaded)\n"
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#else
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#define USAGE_IO \
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" No file operations available (POLARSSL_FS_IO not defined)\n"
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#endif /* POLARSSL_FS_IO */
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#define USAGE \
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"\n usage: ssl_server2 param=<>...\n" \
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"\n acceptable parameters:\n" \
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" server_port=%%d default: 4433\n" \
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" debug_level=%%d default: 0 (disabled)\n" \
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USAGE_IO \
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" request_page=%%s default: \".\"\n" \
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" renegotiation=%%d default: 1 (enabled)\n" \
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" allow_legacy=%%d default: 0 (disabled)\n" \
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" min_version=%%s default: \"ssl3\"\n" \
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" options: ssl3, tls1, tls1_1, tls1_2\n" \
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" force_ciphersuite=<name> default: all enabled\n"\
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" acceptable ciphersuite names:\n"
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#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) || \
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!defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_SRV_C) || \
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!defined(POLARSSL_NET_C) || !defined(POLARSSL_RSA_C) || \
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!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_ENTROPY_C and/or "
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"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 = 0, 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_server2";
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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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x509_cert cacert;
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x509_cert srvcert;
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rsa_context rsa;
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#if defined(POLARSSL_SSL_CACHE_C)
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ssl_cache_context cache;
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#endif
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int i;
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char *p, *q;
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const int *list;
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/*
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* Make sure memory references are valid.
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*/
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listen_fd = 0;
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memset( &cacert, 0, sizeof( x509_cert ) );
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memset( &srvcert, 0, sizeof( x509_cert ) );
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memset( &rsa, 0, sizeof( rsa_context ) );
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#if defined(POLARSSL_SSL_CACHE_C)
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ssl_cache_init( &cache );
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#endif
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if( argc == 0 )
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{
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usage:
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if( ret == 0 )
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ret = 1;
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printf( USAGE );
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list = ssl_list_ciphersuites();
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while( *list )
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{
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printf(" %s\n", ssl_get_ciphersuite_name( *list ) );
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list++;
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}
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printf("\n");
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goto exit;
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}
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opt.server_port = DFL_SERVER_PORT;
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opt.debug_level = DFL_DEBUG_LEVEL;
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opt.ca_file = DFL_CA_FILE;
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opt.ca_path = DFL_CA_PATH;
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opt.crt_file = DFL_CRT_FILE;
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opt.key_file = DFL_KEY_FILE;
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opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
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opt.renegotiation = DFL_RENEGOTIATION;
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opt.allow_legacy = DFL_ALLOW_LEGACY;
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opt.min_version = DFL_MIN_VERSION;
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for( i = 1; i < argc; i++ )
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{
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p = argv[i];
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if( ( q = strchr( p, '=' ) ) == NULL )
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goto usage;
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*q++ = '\0';
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if( strcmp( p, "server_port" ) == 0 )
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{
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opt.server_port = atoi( q );
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if( opt.server_port < 1 || opt.server_port > 65535 )
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goto usage;
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}
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else if( strcmp( p, "debug_level" ) == 0 )
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{
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opt.debug_level = atoi( q );
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if( opt.debug_level < 0 || opt.debug_level > 65535 )
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goto usage;
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}
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else if( strcmp( p, "ca_file" ) == 0 )
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opt.ca_file = q;
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else if( strcmp( p, "ca_path" ) == 0 )
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opt.ca_path = q;
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else if( strcmp( p, "crt_file" ) == 0 )
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opt.crt_file = q;
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else if( strcmp( p, "key_file" ) == 0 )
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opt.key_file = q;
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else if( strcmp( p, "force_ciphersuite" ) == 0 )
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{
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opt.force_ciphersuite[0] = -1;
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opt.force_ciphersuite[0] = ssl_get_ciphersuite_id( q );
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if( opt.force_ciphersuite[0] <= 0 )
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{
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ret = 2;
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goto usage;
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}
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opt.force_ciphersuite[1] = 0;
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}
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else if( strcmp( p, "renegotiation" ) == 0 )
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{
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opt.renegotiation = (atoi( q )) ? SSL_RENEGOTIATION_ENABLED :
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SSL_RENEGOTIATION_DISABLED;
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}
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else if( strcmp( p, "allow_legacy" ) == 0 )
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{
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opt.allow_legacy = atoi( q );
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if( opt.allow_legacy < 0 || opt.allow_legacy > 1 )
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goto usage;
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}
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else if( strcmp( p, "min_version" ) == 0 )
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{
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if( strcmp( q, "ssl3" ) == 0 )
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opt.min_version = SSL_MINOR_VERSION_0;
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else if( strcmp( q, "tls1" ) == 0 )
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opt.min_version = SSL_MINOR_VERSION_1;
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else if( strcmp( q, "tls1_1" ) == 0 )
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opt.min_version = SSL_MINOR_VERSION_2;
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else if( strcmp( q, "tls1_2" ) == 0 )
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opt.min_version = SSL_MINOR_VERSION_3;
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else
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goto usage;
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}
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else
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goto usage;
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}
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/*
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* 0. Initialize the RNG and the session data
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*/
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printf( "\n . 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 -0x%x\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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* 1.1. Load the trusted CA
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*/
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printf( " . Loading the CA root certificate ..." );
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fflush( stdout );
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#if defined(POLARSSL_FS_IO)
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if( strlen( opt.ca_path ) )
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ret = x509parse_crtpath( &cacert, opt.ca_path );
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else if( strlen( opt.ca_file ) )
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ret = x509parse_crtfile( &cacert, opt.ca_file );
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else
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#endif
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#if defined(POLARSSL_CERTS_C)
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ret = x509parse_crt( &cacert, (unsigned char *) test_ca_crt,
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strlen( test_ca_crt ) );
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#else
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{
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ret = 1;
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printf("POLARSSL_CERTS_C not defined.");
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}
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#endif
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if( ret < 0 )
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{
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printf( " failed\n ! x509parse_crt returned -0x%x\n\n", -ret );
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goto exit;
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}
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printf( " ok (%d skipped)\n", ret );
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/*
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* 1.2. Load own certificate and private key
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*/
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printf( " . Loading the server cert. and key..." );
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fflush( stdout );
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#if defined(POLARSSL_FS_IO)
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if( strlen( opt.crt_file ) )
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ret = x509parse_crtfile( &srvcert, opt.crt_file );
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else
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#endif
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#if defined(POLARSSL_CERTS_C)
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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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#else
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{
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ret = 1;
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printf("POLARSSL_CERTS_C not defined.");
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}
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#endif
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if( ret != 0 )
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{
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printf( " failed\n ! x509parse_crt returned -0x%x\n\n", -ret );
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goto exit;
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}
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#if defined(POLARSSL_FS_IO)
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if( strlen( opt.key_file ) )
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ret = x509parse_keyfile( &rsa, opt.key_file, "" );
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else
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#endif
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#if defined(POLARSSL_CERTS_C)
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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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#else
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{
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ret = 1;
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printf("POLARSSL_CERTS_C not defined.");
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}
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#endif
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if( ret != 0 )
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{
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printf( " failed\n ! x509parse_key returned -0x%x\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 tcp://localhost:%-4d/ ...", opt.server_port );
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fflush( stdout );
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if( ( ret = net_bind( &listen_fd, NULL, opt.server_port ) ) != 0 )
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{
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printf( " failed\n ! net_bind returned -0x%x\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. Setup stuff
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*/
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printf( " . Setting up the SSL/TLS structure..." );
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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 -0x%x\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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#if defined(POLARSSL_SSL_CACHE_C)
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ssl_set_session_cache( &ssl, ssl_cache_get, &cache,
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ssl_cache_set, &cache );
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#endif
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if( opt.force_ciphersuite[0] == DFL_FORCE_CIPHER )
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ssl_set_ciphersuites( &ssl, ssl_default_ciphersuites );
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else
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ssl_set_ciphersuites( &ssl, opt.force_ciphersuite );
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ssl_set_renegotiation( &ssl, opt.renegotiation );
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ssl_legacy_renegotiation( &ssl, opt.allow_legacy );
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ssl_set_ca_chain( &ssl, &cacert, 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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/*
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* Use different group than default DHM group
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*/
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ssl_set_dh_param( &ssl, POLARSSL_DHM_RFC5114_MODP_2048_P,
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POLARSSL_DHM_RFC5114_MODP_2048_G );
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#endif
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if( opt.min_version != -1 )
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ssl_set_min_version( &ssl, SSL_MAJOR_VERSION_3, opt.min_version );
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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 -0x%x\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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* 4. 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 -0x%x\n\n", -ret );
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goto reset;
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}
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}
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printf( " ok\n [ Ciphersuite is %s ]\n",
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ssl_get_ciphersuite( &ssl ) );
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/*
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* 5. Verify the server certificate
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*/
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printf( " . Verifying peer X.509 certificate..." );
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|
|
if( ( ret = ssl_get_verify_result( &ssl ) ) != 0 )
|
|
{
|
|
printf( " failed\n" );
|
|
|
|
if( !ssl_get_peer_cert( &ssl ) )
|
|
printf( " ! no client certificate sent\n" );
|
|
|
|
if( ( ret & BADCERT_EXPIRED ) != 0 )
|
|
printf( " ! client certificate has expired\n" );
|
|
|
|
if( ( ret & BADCERT_REVOKED ) != 0 )
|
|
printf( " ! client certificate has been revoked\n" );
|
|
|
|
if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
|
|
printf( " ! self-signed or not signed by a trusted CA\n" );
|
|
|
|
printf( "\n" );
|
|
}
|
|
else
|
|
printf( " ok\n" );
|
|
|
|
if( ssl_get_peer_cert( &ssl ) )
|
|
{
|
|
printf( " . Peer certificate information ...\n" );
|
|
x509parse_cert_info( (char *) buf, sizeof( buf ) - 1, " ",
|
|
ssl_get_peer_cert( &ssl ) );
|
|
printf( "%s\n", buf );
|
|
}
|
|
|
|
/*
|
|
* 6. Read the HTTP Request
|
|
*/
|
|
printf( " < Read from client:" );
|
|
fflush( stdout );
|
|
|
|
do
|
|
{
|
|
len = sizeof( buf ) - 1;
|
|
memset( buf, 0, sizeof( buf ) );
|
|
ret = ssl_read( &ssl, buf, len );
|
|
|
|
if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE )
|
|
continue;
|
|
|
|
if( ret <= 0 )
|
|
{
|
|
switch( ret )
|
|
{
|
|
case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY:
|
|
printf( " connection was closed gracefully\n" );
|
|
break;
|
|
|
|
case POLARSSL_ERR_NET_CONN_RESET:
|
|
printf( " connection was reset by peer\n" );
|
|
break;
|
|
|
|
default:
|
|
printf( " ssl_read returned -0x%x\n", -ret );
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
len = ret;
|
|
printf( " %d bytes read\n\n%s", len, (char *) buf );
|
|
|
|
if( ret > 0 )
|
|
break;
|
|
}
|
|
while( 1 );
|
|
|
|
/*
|
|
* 7. Write the 200 Response
|
|
*/
|
|
printf( " > Write to client:" );
|
|
fflush( stdout );
|
|
|
|
len = sprintf( (char *) buf, HTTP_RESPONSE,
|
|
ssl_get_ciphersuite( &ssl ) );
|
|
|
|
while( ( ret = ssl_write( &ssl, buf, len ) ) <= 0 )
|
|
{
|
|
if( ret == POLARSSL_ERR_NET_CONN_RESET )
|
|
{
|
|
printf( " failed\n ! peer closed the connection\n\n" );
|
|
goto reset;
|
|
}
|
|
|
|
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
|
|
{
|
|
printf( " failed\n ! ssl_write returned %d\n\n", ret );
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
len = ret;
|
|
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: -0x%X - %s\n\n", -ret, error_buf );
|
|
}
|
|
#endif
|
|
|
|
net_close( client_fd );
|
|
x509_free( &srvcert );
|
|
x509_free( &cacert );
|
|
rsa_free( &rsa );
|
|
ssl_free( &ssl );
|
|
|
|
#if defined(POLARSSL_SSL_CACHE_C)
|
|
ssl_cache_free( &cache );
|
|
#endif
|
|
|
|
#if defined(_WIN32)
|
|
printf( " + Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* POLARSSL_BIGNUM_C && POLARSSL_ENTROPY_C && POLARSSL_SSL_TLS_C &&
|
|
POLARSSL_SSL_SRV_C && POLARSSL_NET_C && POLARSSL_RSA_C &&
|
|
POLARSSL_CTR_DRBG_C */
|