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.encoder; 022 023 024 import org.apache.directory.server.dns.messages.QuestionRecord; 025 import org.apache.directory.server.dns.messages.RecordClass; 026 import org.apache.directory.server.dns.messages.RecordType; 027 import org.apache.mina.core.buffer.IoBuffer; 028 029 030 /** 031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 032 * @version $Rev: 725712 $, $Date: 2008-12-11 16:32:04 +0100 (Thu, 11 Dec 2008) $ 033 */ 034 public class QuestionRecordEncoder 035 { 036 /** 037 * Encodes the {@link QuestionRecord} into the {@link ByteBuffer}. 038 * 039 * @param out 040 * @param question 041 */ 042 public void put( IoBuffer out, QuestionRecord question ) 043 { 044 encodeDomainName( out, question.getDomainName() ); 045 encodeRecordType( out, question.getRecordType() ); 046 encodeRecordClass( out, question.getRecordClass() ); 047 } 048 049 050 private void encodeDomainName( IoBuffer byteBuffer, String domainName ) 051 { 052 String[] labels = domainName.split( "\\." ); 053 054 for ( int ii = 0; ii < labels.length; ii++ ) 055 { 056 byteBuffer.put( ( byte ) labels[ii].length() ); 057 058 char[] characters = labels[ii].toCharArray(); 059 for ( int jj = 0; jj < characters.length; jj++ ) 060 { 061 byteBuffer.put( ( byte ) characters[jj] ); 062 } 063 } 064 065 byteBuffer.put( ( byte ) 0x00 ); 066 } 067 068 069 private void encodeRecordType( IoBuffer byteBuffer, RecordType recordType ) 070 { 071 byteBuffer.putShort( recordType.convert() ); 072 } 073 074 075 private void encodeRecordClass( IoBuffer byteBuffer, RecordClass recordClass ) 076 { 077 byteBuffer.putShort( recordClass.convert() ); 078 } 079 }