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.ResourceRecord;
25 import org.apache.directory.server.dns.store.DnsAttribute;
26 import org.apache.mina.common.ByteBuffer;
27
28
29 /**
30 * 3.3.9. MX RDATA format
31 *
32 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
33 * | PREFERENCE |
34 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
35 * / EXCHANGE /
36 * / /
37 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
38 *
39 * where:
40 *
41 * PREFERENCE A 16 bit integer which specifies the preference given to
42 * this RR among others at the same owner. Lower values
43 * are preferred.
44 *
45 * EXCHANGE A <domain-name> which specifies a host willing to act as
46 * a mail exchange for the owner name.
47 *
48 * MX records cause type A additional section processing for the host
49 * specified by EXCHANGE. The use of MX RRs is explained in detail in
50 * [RFC-974].
51 *
52 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
53 * @version $Rev: 507387 $, $Date: 2007-02-14 05:54:05 +0100 (Mi, 14 Feb 2007) $
54 */
55 public class MailExchangeRecordEncoder extends ResourceRecordEncoder
56 {
57 protected void putResourceRecordData( ByteBuffer byteBuffer, ResourceRecord record )
58 {
59 byteBuffer.putShort( Short.parseShort( record.get( DnsAttribute.MX_PREFERENCE ) ) );
60 putDomainName( byteBuffer, record.get( DnsAttribute.DOMAIN_NAME ) );
61 }
62 }