/*******************************************************************************
*Copyright (c) 2009 Eucalyptus Systems, Inc.
*
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* Please contact Eucalyptus Systems, Inc., 130 Castilian
* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
* if you need additional information or have any questions.
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* Software License Agreement (BSD License)
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* Copyright (c) 2008, Regents of the University of California
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*******************************************************************************/
/*
* Author: chris grzegorczyk <grze@eucalyptus.com>
*/
package com.eucalyptus.auth.util;
import org.apache.log4j.Logger;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import java.io.*;
import java.security.*;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
public abstract class AbstractKeyStore {
public static AbstractKeyStore getGenericKeystore( final String fileName, final String password, final String format ) throws IOException, GeneralSecurityException {
return new GenericKeyStore( fileName, password, format );
}
private static Logger LOG = Logger.getLogger( AbstractKeyStore.class );
private KeyStore keyStore;
private final String fileName;
private final String password;
private final String format;
public AbstractKeyStore( final String fileName, final String password, final String format ) throws GeneralSecurityException, IOException {
this.password = password;
this.fileName = fileName;
this.format = format;
this.init( );
}
public KeyPair getKeyPair( final String alias, final String password ) throws GeneralSecurityException {
final Certificate cert = this.keyStore.getCertificate( alias );
final PrivateKey privateKey = ( PrivateKey ) this.keyStore.getKey( alias, password.toCharArray( ) );
final KeyPair kp = new KeyPair( cert.getPublicKey( ), privateKey );
return kp;
}
public abstract boolean check( ) throws GeneralSecurityException;
public boolean containsEntry( final String alias ) {
try {
if ( ( X509Certificate ) this.keyStore.getCertificate( alias ) != null ) { return true; }
} catch ( final KeyStoreException e ) {
}
return false;
}
public X509Certificate getCertificate( final String alias ) throws GeneralSecurityException {
return ( X509Certificate ) this.keyStore.getCertificate( alias );
}
public Key getKey( final String alias, final String password ) throws GeneralSecurityException {
return this.keyStore.getKey( alias, password.toCharArray( ) );
}
public String getCertificateAlias( final String certPem ) throws GeneralSecurityException {
final X509Certificate cert = AbstractKeyStore.pemToX509( certPem );
return this.keyStore.getCertificateAlias( cert );
}
public static X509Certificate pemToX509( final String certPem ) throws CertificateException, NoSuchProviderException {
final CertificateFactory certificatefactory = CertificateFactory.getInstance( "X.509", "BC" );
final X509Certificate cert = ( X509Certificate ) certificatefactory.generateCertificate( new ByteArrayInputStream( certPem.getBytes( ) ) );
return cert;
}
public String getCertificateAlias( final X509Certificate cert ) throws GeneralSecurityException {
final String alias = this.keyStore.getCertificateAlias( cert );
if ( alias == null ) { throw new GeneralSecurityException( "No Such Certificate!" ); }
return alias;
}
public void addCertificate( final String alias, final X509Certificate cert ) throws IOException, GeneralSecurityException {
AbstractKeyStore.LOG.info( String.format( "Adding certificate %10s %s to %s", alias, cert, this.fileName ) );
this.keyStore.setCertificateEntry( alias, cert );
this.store( );
}
public void addKeyPair( final String alias, final X509Certificate cert, final PrivateKey privateKey, final String keyPassword ) throws IOException, GeneralSecurityException {
this.keyStore.setKeyEntry( alias, privateKey, keyPassword.toCharArray( ), new Certificate[] { cert } );
this.store( );
}
public void store( ) throws IOException, GeneralSecurityException {
AbstractKeyStore.LOG.info( "Writing back keystore: " + this.fileName );
FileOutputStream fileOutputStream = new FileOutputStream( this.fileName );
this.keyStore.store( fileOutputStream, this.password.toCharArray( ) );
fileOutputStream.close();
}
private void init( ) throws IOException, GeneralSecurityException {
this.keyStore = KeyStore.getInstance( this.format, "BC" );
if ( ( new File( this.fileName ) ).exists( ) ) {
final FileInputStream fin = new FileInputStream( this.fileName );
this.keyStore.load( fin, this.password.toCharArray( ) );
fin.close( );
} else {
this.keyStore.load( null, this.password.toCharArray( ) );
}
}
public List<String> getAliases( ) throws KeyStoreException {
final List<String> aliasList = new ArrayList<String>( );
final Enumeration<String> aliases = this.keyStore.aliases( );
while ( aliases.hasMoreElements( ) ) {
aliasList.add( aliases.nextElement( ) );
}
return aliasList;
}
public String getFileName( ) {
return this.fileName;
}
public void remove( ) {
( new File( this.fileName ) ).delete( );
}
static class GenericKeyStore extends AbstractKeyStore {
private GenericKeyStore( final String fileName, final String password, final String format ) throws IOException, GeneralSecurityException {
super( fileName, password, format );
}
@Override
public boolean check( ) throws KeyStoreException {
throw new RuntimeException( "A GenericKeyStore does not have the notion of being checked for correctness." );
}
}
public InputStream getAsInputStream() throws FileNotFoundException {
return new FileInputStream( this.fileName );
}
public KeyStore getKeyStore( ) {
return keyStore;
}
}