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;
22
23 /**
24 * The Dynamic Host Configuration Protocol (DHCP) provides a framework for
25 * passing configuration information to hosts on a TCP/IP network. Configuration
26 * parameters and other control information are carried in tagged data items
27 * that are stored in the 'options' field of the DHCP message. The data items
28 * themselves are also called "options."
29 *
30 * This abstract base class is for options that carry an unsigned short value
31 * (16 bit).
32 *
33 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
34 * @version $Rev: 551805 $, $Date: 2007-06-29 00:57:04 -0500 (Fr, 29 Jun 2007) $
35 */
36 public abstract class ShortOption extends DhcpOption {
37 /**
38 * The short value (represented as an int because of the unsignedness).
39 */
40 private int shortValue;
41
42 /*
43 * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
44 */
45 public void setData(byte[] data) {
46 shortValue = (data[0] & 0xff) << 8 | (data[1] & 0xff);
47 }
48
49 /*
50 * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
51 */
52 public byte[] getData() {
53 return new byte[]{(byte) (shortValue >> 8 & 0xff),
54 (byte) (shortValue & 0xff)};
55 }
56
57 public int getShortValue() {
58 return shortValue;
59 }
60
61 public void setShortValue(int shortValue) {
62 this.shortValue = shortValue;
63 }
64 }