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package org.openslx.satellitedaemon;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.InvalidKeySpecException;
import java.util.Properties;
import org.apache.log4j.Logger;
import org.openslx.encryption.AsymKeyHolder;
import org.openslx.satellitedaemon.util.Util;
public class Identity
{
private static Logger log = Logger.getLogger( Identity.class );
private static final Properties properties = new Properties();
private static AsymKeyHolder akh = null;
public static String getOrganizationName()
{
return properties.getProperty( "ORGANIZATION_NAME" );
}
private static BigInteger getModulus()
{
return toBigInt( properties.getProperty( "MODULUS" ) );
}
private static BigInteger getPublicExponent()
{
return toBigInt( properties.getProperty( "PUBLIC_EXPONENT" ) );
}
private static BigInteger getPrivateExponent()
{
return toBigInt( properties.getProperty( "PRIVATE_EXPONENT" ) );
}
/**
* Load properties
*/
static {
InputStreamReader stream = null;
try {
// Load all entries of the config file into properties
stream = new InputStreamReader(
new FileInputStream( "config/identity.properties" ), StandardCharsets.UTF_8 );
properties.load( stream );
stream.close();
} catch ( IOException e ) {
log.error( "Could not load identity.properties. Exiting." );
System.exit( 2 );
} finally {
Util.streamClose( stream );
}
Util.notNullOrEmptyFatal( getOrganizationName(), "Organiziation Name must not be empty!" );
try {
akh = new AsymKeyHolder( getPrivateExponent(), getPublicExponent(), getModulus() );
} catch ( InvalidKeySpecException e ) {
log.error( "InvalidKeySpecException", e );
} catch ( NoSuchAlgorithmException e ) {
log.error( "NoSuchAlgorithmException", e );
}
}
/**
* Get private key for this server. If none exists yet, create a new one.
*
* @return
*/
public static PrivateKey getPrivateKey()
{
if ( akh != null ) {
return akh.getPrivateKey();
}
akh = new AsymKeyHolder();
return akh.getPrivateKey();
}
/**
* Get public key for this server. If none exists yet, create a new one.
*
* @return
*/
public static PublicKey getPublicKey()
{
if ( akh != null )
return akh.getPublicKey();
akh = new AsymKeyHolder();
return akh.getPublicKey();
}
/**
* Get bit - length of key.
* @return
*/
public static int keySize() {
if (getModulus() != null)
return getModulus().bitLength();
return -1;
}
public static boolean checkMembers() {
return (
(getModulus() != null) &&
(getPrivateExponent() != null) &&
(getPublicExponent() != null));
}
/**
* Get BigInteger of read String number.
* @param str
* @return
*/
private static BigInteger toBigInt( String str )
{
try {
return new BigInteger( str );
} catch ( Exception e ) {
return null;
}
}
}
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