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.dns.io.encoder;
22
23
24 import org.apache.directory.server.dns.messages.QuestionRecord;
25 import org.apache.directory.server.dns.messages.RecordClass;
26 import org.apache.directory.server.dns.messages.RecordType;
27 import org.apache.mina.common.ByteBuffer;
28
29
30 /**
31 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
32 * @version $Rev: 547524 $, $Date: 2007-06-15 06:42:26 +0200 (Fr, 15 Jun 2007) $
33 */
34 public class QuestionRecordEncoder
35 {
36 /**
37 * Encodes the {@link QuestionRecord} into the {@link ByteBuffer}.
38 *
39 * @param out
40 * @param question
41 */
42 public void put( ByteBuffer out, QuestionRecord question )
43 {
44 encodeDomainName( out, question.getDomainName() );
45 encodeRecordType( out, question.getRecordType() );
46 encodeRecordClass( out, question.getRecordClass() );
47 }
48
49
50 private void encodeDomainName( ByteBuffer byteBuffer, String domainName )
51 {
52 String[] labels = domainName.split( "\\." );
53
54 for ( int ii = 0; ii < labels.length; ii++ )
55 {
56 byteBuffer.put( ( byte ) labels[ii].length() );
57
58 char[] characters = labels[ii].toCharArray();
59 for ( int jj = 0; jj < characters.length; jj++ )
60 {
61 byteBuffer.put( ( byte ) characters[jj] );
62 }
63 }
64
65 byteBuffer.put( ( byte ) 0x00 );
66 }
67
68
69 private void encodeRecordType( ByteBuffer byteBuffer, RecordType recordType )
70 {
71 byteBuffer.putShort( recordType.convert() );
72 }
73
74
75 private void encodeRecordClass( ByteBuffer byteBuffer, RecordClass recordClass )
76 {
77 byteBuffer.putShort( recordClass.convert() );
78 }
79 }