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 * 3.3.13. SOA RDATA format
30 *
31 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
32 * / MNAME /
33 * / /
34 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
35 * / RNAME /
36 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
37 * | SERIAL |
38 * | |
39 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
40 * | REFRESH |
41 * | |
42 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
43 * | RETRY |
44 * | |
45 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
46 * | EXPIRE |
47 * | |
48 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
49 * | MINIMUM |
50 * | |
51 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
52 *
53 * where:
54 *
55 * MNAME The <domain-name> of the name server that was the
56 * original or primary source of data for this zone.
57 *
58 * RNAME A <domain-name> which specifies the mailbox of the
59 * person responsible for this zone.
60 *
61 * SERIAL The unsigned 32 bit version number of the original copy
62 * of the zone. Zone transfers preserve this value. This
63 * value wraps and should be compared using sequence space
64 * arithmetic.
65 *
66 * REFRESH A 32 bit time interval before the zone should be
67 * refreshed.
68 *
69 * RETRY A 32 bit time interval that should elapse before a
70 * failed refresh should be retried.
71 *
72 * EXPIRE A 32 bit time value that specifies the upper limit on
73 * the time interval that can elapse before the zone is no
74 * longer authoritative.
75 *
76 * MINIMUM The unsigned 32 bit minimum TTL field that should be
77 * exported with any RR from this zone.
78 *
79 * SOA records cause no additional section processing.
80 *
81 * All times are in units of seconds.
82 *
83 * Most of these fields are pertinent only for name server maintenance
84 * operations. However, MINIMUM is used in all query operations that
85 * retrieve RRs from a zone. Whenever a RR is sent in a response to a
86 * query, the TTL field is set to the maximum of the TTL field from the RR
87 * and the MINIMUM field in the appropriate SOA. Thus MINIMUM is a lower
88 * bound on the TTL field for all RRs in a zone. Note that this use of
89 * MINIMUM should occur when the RRs are copied into the response and not
90 * when the zone is loaded from a master file or via a zone transfer. The
91 * reason for this provison is to allow future dynamic update facilities to
92 * change the SOA RR with known semantics.
93 *
94 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
95 * @version $Rev: 507388 $, $Date: 2007-02-14 05:55:05 +0100 (Mi, 14 Feb 2007) $
96 */
97 public class StartOfAuthorityRecordEncoder extends ResourceRecordEncoder
98 {
99 protected void putResourceRecordData( ByteBuffer byteBuffer, ResourceRecord record )
100 {
101 String mName = record.get( DnsAttribute.SOA_M_NAME );
102 String rName = record.get( DnsAttribute.SOA_R_NAME );
103 long serial = Long.parseLong( record.get( DnsAttribute.SOA_SERIAL ) );
104 int refresh = Integer.parseInt( record.get( DnsAttribute.SOA_REFRESH ) );
105 int retry = Integer.parseInt( record.get( DnsAttribute.SOA_RETRY ) );
106 int expire = Integer.parseInt( record.get( DnsAttribute.SOA_EXPIRE ) );
107 long minimum = Long.parseLong( record.get( DnsAttribute.SOA_MINIMUM ) );
108
109 putDomainName( byteBuffer, mName );
110 putDomainName( byteBuffer, rName );
111
112 byteBuffer.putInt( ( int ) serial );
113
114 byteBuffer.putInt( refresh );
115 byteBuffer.putInt( retry );
116 byteBuffer.putInt( expire );
117
118 byteBuffer.putInt( ( int ) minimum );
119 }
120 }