/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.server.changepw.io;
import java.io.IOException;
import java.util.Enumeration;
import org.apache.directory.server.changepw.value.ChangePasswordData;
import org.apache.directory.server.changepw.value.ChangePasswordDataModifier;
import org.apache.directory.server.kerberos.shared.io.decoder.PrincipalNameDecoder;
import org.apache.directory.shared.asn1.der.ASN1InputStream;
import org.apache.directory.shared.asn1.der.DEREncodable;
import org.apache.directory.shared.asn1.der.DERGeneralString;
import org.apache.directory.shared.asn1.der.DEROctetString;
import org.apache.directory.shared.asn1.der.DERSequence;
import org.apache.directory.shared.asn1.der.DERTaggedObject;
/**
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev: 540371 $, $Date: 2007-05-22 02:00:43 +0200 (Mar, 22 mai 2007) $
*/
public class ChangePasswordDataDecoder
{
/**
* Decodes bytes into a ChangePasswordData.
*
* @param encodedChangePasswdData
* @return The {@link ChangePasswordData}.
* @throws IOException
*/
public ChangePasswordData decodeChangePasswordData( byte[] encodedChangePasswdData ) throws IOException
{
ASN1InputStream ais = new ASN1InputStream( encodedChangePasswdData );
DERSequence sequence = ( DERSequence ) ais.readObject();
return decodeChangePasswdData( sequence );
}
protected ChangePasswordData decodeChangePasswdData( DERSequence sequence )
{
ChangePasswordDataModifier modifier = new ChangePasswordDataModifier();
for ( Enumeration e = sequence.getObjects(); e.hasMoreElements(); )
{
DERTaggedObject object = ( ( DERTaggedObject ) e.nextElement() );
int tag = object.getTagNo();
DEREncodable derObject = object.getObject();
switch ( tag )
{
case 0:
DEROctetString tag0 = ( DEROctetString ) derObject;
modifier.setNewPassword( tag0.getOctets() );
break;
case 1:
DERSequence tag1 = ( DERSequence ) derObject;
modifier.setTargetName( PrincipalNameDecoder.decode( tag1 ) );
break;
case 2:
DERGeneralString tag2 = ( DERGeneralString ) derObject;
modifier.setTargetRealm( tag2.getString() );
break;
default:
break;
}
}
return modifier.getChangePasswdData();
}
}