/*
* 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.KerberosTime;
import org.apache.directory.server.kerberos.shared.messages.value.LastRequest;
import org.apache.directory.server.kerberos.shared.messages.value.LastRequestEntry;
import org.apache.directory.server.kerberos.shared.messages.value.LastRequestType;
import org.apache.directory.shared.asn1.der.DEREncodable;
import org.apache.directory.shared.asn1.der.DERGeneralizedTime;
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: 589780 $, $Date: 2007-10-29 19:14:59 +0100 (Lun, 29 oct 2007) $
*/
public class LastRequestDecoder
{
/**
* LastReq ::= SEQUENCE OF SEQUENCE {
* lr-type[0] INTEGER,
* lr-value[1] KerberosTime
* }
*/
protected static LastRequest decodeSequence( DERSequence sequence )
{
LastRequestEntry[] entries = new LastRequestEntry[sequence.size()];
int ii = 0;
for ( Enumeration<DEREncodable> e = sequence.getObjects(); e.hasMoreElements(); )
{
DERSequence object = ( DERSequence ) e.nextElement();
LastRequestEntry entry = decode( object );
entries[ii] = entry;
ii++;
}
return new LastRequest( entries );
}
protected static LastRequestEntry decode( DERSequence sequence )
{
LastRequestType type = LastRequestType.NONE;
KerberosTime value = null;
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 tag0 = ( DERInteger ) derObject;
type = LastRequestType.getTypeByOrdinal( tag0.intValue() );
break;
case 1:
DERGeneralizedTime tag1 = ( DERGeneralizedTime ) derObject;
value = KerberosTimeDecoder.decode( tag1 );
break;
}
}
return new LastRequestEntry( type, value );
}
}