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 */ 020 021 package org.apache.directory.server.dns.io.decoder; 022 023 024 import java.io.IOException; 025 import java.net.InetAddress; 026 import java.util.HashMap; 027 import java.util.Map; 028 029 import org.apache.directory.server.dns.store.DnsAttribute; 030 import org.apache.mina.core.buffer.IoBuffer; 031 032 033 /** 034 * A decoder for A records. As per RFC 1035 035 * 036 * <pre> 037 * 3.4.1. A RDATA format 038 * 039 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 040 * | ADDRESS | 041 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 042 * 043 * where: 044 * 045 * ADDRESS 046 * A 32 bit Internet address. 047 * </pre> 048 * 049 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 050 * @version $Rev$, $Date$ 051 */ 052 public class AddressRecordDecoder implements RecordDecoder 053 { 054 public Map<String, Object> decode( IoBuffer byteBuffer, short length ) throws IOException 055 { 056 Map<String, Object> attributes = new HashMap<String, Object>(); 057 byte[] addressBytes = new byte[length]; 058 byteBuffer.get( addressBytes ); 059 attributes.put( DnsAttribute.IP_ADDRESS, InetAddress.getByAddress( addressBytes ) ); 060 return attributes; 061 } 062 }