001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020 021package org.apache.directory.server.dhcp.options; 022 023 024import java.io.UnsupportedEncodingException; 025 026import org.apache.directory.server.i18n.I18n; 027 028 029/** 030 * The Dynamic Host Configuration Protocol (DHCP) provides a framework for 031 * passing configuration information to hosts on a TCP/IP network. Configuration 032 * parameters and other control information are carried in tagged data items 033 * that are stored in the 'options' field of the DHCP message. The data items 034 * themselves are also called "options." 035 * 036 * This abstract base class is for options 037 * that carry a string. 038 * 039 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 040 */ 041public abstract class StringOption extends DhcpOption 042{ 043 private String string; 044 045 046 /* 047 * @see org.apache.directory.server.dhcp.options.DhcpOption#setData(byte[]) 048 */ 049 @Override 050 public void setData( byte[] data ) 051 { 052 try 053 { 054 string = new String( data, "ASCII" ); 055 } 056 catch ( UnsupportedEncodingException e ) 057 { 058 // should not happen 059 throw new RuntimeException( I18n.err( I18n.ERR_642 ) ); 060 } 061 } 062 063 064 /* 065 * @see org.apache.directory.server.dhcp.options.DhcpOption#getData() 066 */ 067 @Override 068 public byte[] getData() 069 { 070 if ( null == string ) 071 { 072 return new byte[] 073 {}; 074 } 075 076 try 077 { 078 return string.getBytes( "ASCII" ); 079 } 080 catch ( UnsupportedEncodingException e ) 081 { 082 // should not happen 083 throw new RuntimeException( I18n.err( I18n.ERR_642 ) ); 084 } 085 } 086 087 088 public String getString() 089 { 090 return string; 091 } 092 093 094 public void setString( String string ) 095 { 096 this.string = string; 097 } 098}