/*
* Certificate reading application
*
* Copyright (C) 2006-2011, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE 1
#endif
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "polarssl/config.h"
#include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/net.h"
#include "polarssl/ssl.h"
#include "polarssl/x509.h"
#define MODE_NONE 0
#define MODE_FILE 1
#define MODE_SSL 2
#define DFL_MODE MODE_NONE
#define DFL_FILENAME "cert.crt"
#define DFL_SERVER_NAME "localhost"
#define DFL_SERVER_PORT 4433
#define DFL_DEBUG_LEVEL 0
#define DFL_PERMISSIVE 0
/*
* global options
*/
struct options
{
int mode; /* the mode to run the application in */
char *filename; /* filename of the certificate file */
char *server_name; /* hostname of the server (client only) */
int server_port; /* port on which the ssl service runs */
int debug_level; /* level of debugging */
int permissive; /* permissive parsing */
} opt;
void my_debug( void *ctx, int level, const char *str )
{
if( level < opt.debug_level )
{
fprintf( (FILE *) ctx, "%s", str );
fflush( (FILE *) ctx );
}
}
#define USAGE \
"\n usage: cert_app param=<>...\n" \
"\n acceptable parameters:\n" \
" mode=file|ssl default: none\n" \
" filename=%%s default: cert.crt\n" \
" server_name=%%s default: localhost\n" \
" server_port=%%d default: 4433\n" \
" debug_level=%%d default: 0 (disabled)\n" \
" permissive=%%d default: 0 (disabled)\n" \
"\n"
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) || \
!defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_CLI_C) || \
!defined(POLARSSL_NET_C) || !defined(POLARSSL_RSA_C) || \
!defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO) || \
!defined(POLARSSL_CTR_DRBG_C)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
"POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_CLI_C and/or "
"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO and/or "
"POLARSSL_CTR_DRBG_C not defined.\n");
return( 0 );
}
#else
int main( int argc, char *argv[] )
{
int ret = 0, server_fd;
unsigned char buf[1024];
entropy_context entropy;
ctr_drbg_context ctr_drbg;
ssl_context ssl;
ssl_session ssn;
x509_cert clicert;
rsa_context rsa;
int i, j, n;
char *p, *q;
char *pers = "cert_app";
/*
* Set to sane values
*/
server_fd = 0;
memset( &ssl, 0, sizeof( ssl_context ) );
memset( &ssn, 0, sizeof( ssl_session ) );
memset( &clicert, 0, sizeof( x509_cert ) );
memset( &rsa, 0, sizeof( rsa_context ) );
if( argc == 0 )
{
usage:
printf( USAGE );
goto exit;
}
opt.mode = DFL_MODE;
opt.filename = DFL_FILENAME;
opt.server_name = DFL_SERVER_NAME;
opt.server_port = DFL_SERVER_PORT;
opt.debug_level = DFL_DEBUG_LEVEL;
opt.permissive = DFL_PERMISSIVE;
for( i = 1; i < argc; i++ )
{
n = strlen( argv[i] );
for( j = 0; j < n; j++ )
{
if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
argv[i][j] |= 0x20;
}
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
if( strcmp( p, "mode" ) == 0 )
{
if( strcmp( q, "file" ) == 0 )
opt.mode = MODE_FILE;
else if( strcmp( q, "ssl" ) == 0 )
opt.mode = MODE_SSL;
else
goto usage;
}
else if( strcmp( p, "filename" ) == 0 )
opt.filename = q;
else if( strcmp( p, "server_name" ) == 0 )
opt.server_name = q;
else if( strcmp( p, "server_port" ) == 0 )
{
opt.server_port = atoi( q );
if( opt.server_port < 1 || opt.server_port > 65535 )
goto usage;
}
else if( strcmp( p, "debug_level" ) == 0 )
{
opt.debug_level = atoi( q );
if( opt.debug_level < 0 || opt.debug_level > 65535 )
goto usage;
}
else if( strcmp( p, "permissive" ) == 0 )
{
opt.permissive = atoi( q );
if( opt.permissive < 0 || opt.permissive > 1 )
goto usage;
}
else
goto usage;
}
if( opt.mode == MODE_FILE )
{
x509_cert crt;
x509_cert *cur = &crt;
memset( &crt, 0, sizeof( x509_cert ) );
/*
* 1.1. Load the certificate(s)
*/
printf( "\n . Loading the certificate(s) ..." );
fflush( stdout );
ret = x509parse_crtfile( &crt, opt.filename );
if( ret < 0 )
{
printf( " failed\n ! x509parse_crt returned %d\n\n", ret );
x509_free( &crt );
goto exit;
}
if( opt.permissive == 0 && ret > 0 )
{
printf( " failed\n ! x509parse_crt failed to parse %d certificates\n\n", ret );
x509_free( &crt );
goto exit;
}
printf( " ok\n" );
/*
* 1.2 Print the certificate(s)
*/
while( cur != NULL )
{
printf( " . Peer certificate information ...\n" );
ret = x509parse_cert_info( (char *) buf, sizeof( buf ) - 1, " ", cur );
if( ret == -1 )
{
printf( " failed\n ! x509parse_cert_info returned %d\n\n", ret );
x509_free( &crt );
goto exit;
}
printf( "%s\n", buf );
cur = cur->next;
}
x509_free( &crt );
}
else if( opt.mode == MODE_SSL )
{
/*
* 1. Initialize the RNG and the session data
*/
printf( "\n . Seeding the random number generator..." );
fflush( stdout );
entropy_init( &entropy );
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
(unsigned char *) pers, strlen( pers ) ) ) != 0 )
{
printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
goto exit;
}
/*
* 2. Start the connection
*/
printf( " . SSL connection to tcp/%s/%-4d...", opt.server_name,
opt.server_port );
fflush( stdout );
if( ( ret = net_connect( &server_fd, opt.server_name,
opt.server_port ) ) != 0 )
{
printf( " failed\n ! net_connect returned %d\n\n", ret );
goto exit;
}
/*
* 3. Setup stuff
*/
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
printf( " failed\n ! ssl_init returned %d\n\n", ret );
goto exit;
}
ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
ssl_set_authmode( &ssl, SSL_VERIFY_NONE );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_debug, stdout );
ssl_set_bio( &ssl, net_recv, &server_fd,
net_send, &server_fd );
ssl_set_ciphersuites( &ssl, ssl_default_ciphersuites );
ssl_set_session( &ssl, 1, 600, &ssn );
ssl_set_own_cert( &ssl, &clicert, &rsa );
ssl_set_hostname( &ssl, opt.server_name );
/*
* 4. Handshake
*/
while( ( ret = ssl_handshake( &ssl ) ) != 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
printf( " failed\n ! ssl_handshake returned %d\n\n", ret );
goto exit;
}
}
printf( " ok\n" );
/*
* 5. Print the certificate
*/
printf( " . Peer certificate information ...\n" );
ret = x509parse_cert_info( (char *) buf, sizeof( buf ) - 1, " ", ssl.peer_cert );
if( ret == -1 )
{
printf( " failed\n ! x509parse_cert_info returned %d\n\n", ret );
goto exit;
}
printf( "%s\n", buf );
ssl_close_notify( &ssl );
}
else
goto usage;
exit:
if( server_fd )
net_close( server_fd );
x509_free( &clicert );
rsa_free( &rsa );
ssl_free( &ssl );
memset( &ssl, 0, sizeof( ssl ) );
#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_CLI_C && POLARSSL_NET_C && POLARSSL_RSA_C &&
POLARSSL_X509_PARSE_C && POLARSSL_FS_IO && POLARSSL_CTR_DRBG_C */