001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with this
004     * work for additional information regarding copyright ownership. The ASF
005     * licenses this file to you under the Apache License, Version 2.0 (the
006     * "License"); you may not use this file except in compliance with the License.
007     * You may obtain a copy of the License at
008     * 
009     * http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
013     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
014     * License for the specific language governing permissions and limitations under
015     * the License.
016     * 
017     */
018    
019    package org.apache.directory.server.dhcp.options;
020    
021    /**
022     * The Dynamic Host Configuration Protocol (DHCP) provides a framework for
023     * passing configuration information to hosts on a TCP/IP network. Configuration
024     * parameters and other control information are carried in tagged data items
025     * that are stored in the 'options' field of the DHCP message. The data items
026     * themselves are also called "options."
027     * 
028     * This abstract base class is for options that carry a short value (16 bit).
029     * 
030     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
031     * @version $Rev: 551805 $, $Date: 2007-06-29 00:57:04 -0500 (Fr, 29 Jun 2007) $
032     */
033    public abstract class IntOption extends DhcpOption {
034        /**
035         * The int value (represented as a long because of the unsignedness).
036         */
037        private long intValue;
038    
039        /*
040         * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
041         */
042        public void setData(byte[] data) {
043            intValue = (data[0] & 0xff) << 24 | (data[1] & 0xff) << 16
044                    | (data[2] & 0xff) << 8 | (data[3] & 0xff);
045        }
046    
047        /*
048         * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
049         */
050        public byte[] getData() {
051            return new byte[]{(byte) (intValue >> 24 & 0xff),
052                    (byte) (intValue >> 16 & 0xff), (byte) (intValue >> 8 & 0xff),
053                    (byte) (intValue & 0xff)};
054        }
055    
056        public long getIntValue() {
057            return intValue;
058        }
059    
060        public void setIntValue(long intValue) {
061            this.intValue = intValue;
062        }
063    }