/*
* 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.kerberos.shared.io.decoder;
import java.util.Enumeration;
import org.apache.directory.server.kerberos.shared.messages.value.PrincipalName;
import org.apache.directory.shared.asn1.der.DEREncodable;
import org.apache.directory.shared.asn1.der.DERGeneralString;
import org.apache.directory.shared.asn1.der.DERInteger;
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: 587146 $, $Date: 2007-10-22 18:28:37 +0200 (Lun, 22 oct 2007) $
*/
public class PrincipalNameDecoder
{
/**
* Decodes a {@link DERSequence} into a {@link PrincipalName}.
*
* PrincipalName ::= SEQUENCE {
* name-type[0] INTEGER,
* name-string[1] SEQUENCE OF GeneralString
* }
*
* @param sequence
* @return The {@link PrincipalName}.
*/
public static PrincipalName decode( DERSequence sequence )
{
PrincipalName principalName = new PrincipalName();
for ( Enumeration<DEREncodable> e = sequence.getObjects(); e.hasMoreElements(); )
{
DERTaggedObject object = ( DERTaggedObject ) e.nextElement();
int tag = object.getTagNo();
DEREncodable derObject = object.getObject();
switch ( tag )
{
case 0:
DERInteger nameType = ( DERInteger ) derObject;
principalName.setNameType( nameType.intValue() );
break;
case 1:
DERSequence nameString = ( DERSequence ) derObject;
decodeNameString( nameString, principalName );
break;
}
}
return principalName;
}
private static void decodeNameString( DERSequence sequence, PrincipalName principalName )
{
for ( Enumeration<DEREncodable> e = sequence.getObjects(); e.hasMoreElements(); )
{
DERGeneralString object = ( DERGeneralString ) e.nextElement();
principalName.addName( object.getString() );
}
}
}