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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with this
4    * work for additional information regarding copyright ownership. The ASF
5    * licenses this file to you under the Apache License, Version 2.0 (the
6    * "License"); you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    * 
9    * http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
13   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
14   * License for the specific language governing permissions and limitations under
15   * the License.
16   * 
17   */
18  
19  package org.apache.directory.server.dhcp.options;
20  
21  /**
22   * The Dynamic Host Configuration Protocol (DHCP) provides a framework for
23   * passing configuration information to hosts on a TCP/IP network. Configuration
24   * parameters and other control information are carried in tagged data items
25   * that are stored in the 'options' field of the DHCP message. The data items
26   * themselves are also called "options."
27   * 
28   * This abstract base class is for options that carry a short value (16 bit).
29   * 
30   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
31   * @version $Rev: 551805 $, $Date: 2007-06-29 00:57:04 -0500 (Fr, 29 Jun 2007) $
32   */
33  public abstract class IntOption extends DhcpOption {
34      /**
35       * The int value (represented as a long because of the unsignedness).
36       */
37      private long intValue;
38  
39      /*
40       * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
41       */
42      public void setData(byte[] data) {
43          intValue = (data[0] & 0xff) << 24 | (data[1] & 0xff) << 16
44                  | (data[2] & 0xff) << 8 | (data[3] & 0xff);
45      }
46  
47      /*
48       * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
49       */
50      public byte[] getData() {
51          return new byte[]{(byte) (intValue >> 24 & 0xff),
52                  (byte) (intValue >> 16 & 0xff), (byte) (intValue >> 8 & 0xff),
53                  (byte) (intValue & 0xff)};
54      }
55  
56      public long getIntValue() {
57          return intValue;
58      }
59  
60      public void setIntValue(long intValue) {
61          this.intValue = intValue;
62      }
63  }