001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *  
010     *    http://www.apache.org/licenses/LICENSE-2.0
011     *  
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License. 
018     *  
019     */
020    package org.apache.directory.server.kerberos.shared.io.encoder;
021    
022    
023    import org.apache.directory.server.kerberos.shared.messages.value.HostAddress;
024    import org.apache.directory.server.kerberos.shared.messages.value.HostAddresses;
025    import org.apache.directory.shared.asn1.der.DERInteger;
026    import org.apache.directory.shared.asn1.der.DEROctetString;
027    import org.apache.directory.shared.asn1.der.DERSequence;
028    import org.apache.directory.shared.asn1.der.DERTaggedObject;
029    
030    
031    /**
032     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
033     * @version $Rev: 587242 $, $Date: 2007-10-22 22:42:40 +0200 (Mon, 22 Oct 2007) $
034     */
035    public class HostAddressesEncoder
036    {
037        /**
038         * HostAddresses ::=   SEQUENCE OF SEQUENCE {
039         *                     addr-type[0]             INTEGER,
040         *                     address[1]               OCTET STRING
041         * }
042         */
043        protected static DERSequence encodeSequence( HostAddresses hosts )
044        {
045            HostAddress[] addresses = hosts.getAddresses();
046            DERSequence sequence = new DERSequence();
047    
048            for ( int ii = 0; ii < addresses.length; ii++ )
049            {
050                sequence.add( encode( addresses[ii] ) );
051            }
052    
053            return sequence;
054        }
055    
056    
057        /**
058         *  HostAddress ::=     SEQUENCE  {
059         *                     addr-type[0]             INTEGER,
060         *                     address[1]               OCTET STRING
061         * }
062         */
063        protected static DERSequence encode( HostAddress host )
064        {
065            DERSequence sequence = new DERSequence();
066    
067            sequence.add( new DERTaggedObject( 0, DERInteger.valueOf( host.getAddrType().getOrdinal() ) ) );
068            sequence.add( new DERTaggedObject( 1, new DEROctetString( host.getAddress() ) ) );
069    
070            return sequence;
071        }
072    }