/*
 *  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.dhcp.options;


import java.net.InetAddress;
import java.net.UnknownHostException;


/**
 * The Dynamic Host Configuration Protocol (DHCP) provides a framework
 * for passing configuration information to hosts on a TCP/IP network.  
 * Configuration parameters and other control information are carried in
 * tagged data items that are stored in the 'options' field of the DHCP
 * message.  The data items themselves are also called "options."
 *
 * This abstract base class is for options that carry a single IP address.
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$, $Date$
 */
public abstract class AddressOption extends DhcpOption
{
    private InetAddress address;


    /*
     * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
     */
    public byte[] getData()
    {
        return address.getAddress();
    }


    /*
     * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
     */
    public void setData( byte[] data )
    {
        try
        {
            address = InetAddress.getByAddress( data );
        }
        catch ( UnknownHostException e )
        {
            throw new IllegalArgumentException( "illegal address", e );
        }
    }


    public InetAddress getAddress()
    {
        return address;
    }


    public void setAddress( InetAddress address )
    {
        this.address = address;
    }
}