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 import java.io.UnsupportedEncodingException;
25
26 import org.apache.directory.server.i18n.I18n;
27
28
29 /**
30 * The Dynamic Host Configuration Protocol (DHCP) provides a framework for
31 * passing configuration information to hosts on a TCP/IP network. Configuration
32 * parameters and other control information are carried in tagged data items
33 * that are stored in the 'options' field of the DHCP message. The data items
34 * themselves are also called "options."
35 *
36 * This abstract base class is for options
37 * that carry a string.
38 *
39 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
40 */
41 public abstract class StringOption extends DhcpOption
42 {
43 private String string;
44
45
46 /*
47 * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[])
48 */
49 @Override
50 public void setData( byte[] data )
51 {
52 try
53 {
54 string = new String( data, "ASCII" );
55 }
56 catch ( UnsupportedEncodingException e )
57 {
58 // should not happen
59 throw new RuntimeException( I18n.err( I18n.ERR_642 ) );
60 }
61 }
62
63
64 /*
65 * @see org.apache.directory.server.dhcp.options.DhcpOption#getData()
66 */
67 @Override
68 public byte[] getData()
69 {
70 if ( null == string )
71 {
72 return new byte[]
73 {};
74 }
75
76 try
77 {
78 return string.getBytes( "ASCII" );
79 }
80 catch ( UnsupportedEncodingException e )
81 {
82 // should not happen
83 throw new RuntimeException( I18n.err( I18n.ERR_642 ) );
84 }
85 }
86
87
88 public String getString()
89 {
90 return string;
91 }
92
93
94 public void setString( String string )
95 {
96 this.string = string;
97 }
98 }