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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  
21  package org.apache.directory.server.dhcp.options.dhcp;
22  
23  
24  import org.apache.directory.server.dhcp.messages.MessageType;
25  import org.apache.directory.server.dhcp.options.DhcpOption;
26  
27  
28  /**
29   * This option is used to convey the type of the DHCP message.  The code
30   * for this option is 53, and its length is 1.  Legal values for this
31   * option are:
32   * 
33   *         Value   Message Type
34   *         -----   ------------
35   *           1     DHCPDISCOVER
36   *           2     DHCPOFFER
37   *           3     DHCPREQUEST
38   *           4     DHCPDECLINE
39   *           5     DHCPACK
40   *           6     DHCPNAK
41   *           7     DHCPRELEASE
42   *           8     DHCPINFORM
43   * 
44   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
45   * @version $Rev: 638228 $, $Date: 2008-03-18 07:12:41 +0100 (Di, 18 Mär 2008) $
46   */
47  public class DhcpMessageType extends DhcpOption
48  {
49      private MessageType type;
50  
51  
52      public DhcpMessageType()
53      {
54      }
55  
56  
57      public DhcpMessageType(MessageType type)
58      {
59          this.type = type;
60      }
61  
62  
63      /*
64       * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag()
65       */
66      public byte getTag()
67      {
68          return 53;
69      }
70  
71  
72      public void setData( byte[] messageType )
73      {
74          type = MessageType.getTypeByCode( messageType[0] );
75      }
76  
77  
78      public byte[] getData()
79      {
80          return new byte[]
81              { type.getCode() };
82      }
83  
84  
85      public MessageType getType()
86      {
87          return type;
88      }
89  }