Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | // Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org) |
| 2 | |
| 3 | package org.xbill.DNS; |
| 4 | |
| 5 | import java.io.*; |
| 6 | |
| 7 | /** |
| 8 | * Start of Authority - describes properties of a zone. |
| 9 | * |
| 10 | * @author Brian Wellington |
| 11 | */ |
| 12 | |
| 13 | public class SOARecord extends Record { |
| 14 | |
| 15 | private static final long serialVersionUID = 1049740098229303931L; |
| 16 | |
| 17 | private Name host, admin; |
| 18 | private long serial, refresh, retry, expire, minimum; |
| 19 | |
| 20 | SOARecord() {} |
| 21 | |
| 22 | Record |
| 23 | getObject() { |
| 24 | return new SOARecord(); |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Creates an SOA Record from the given data |
| 29 | * @param host The primary name server for the zone |
| 30 | * @param admin The zone administrator's address |
| 31 | * @param serial The zone's serial number |
| 32 | * @param refresh The amount of time until a secondary checks for a new serial |
| 33 | * number |
| 34 | * @param retry The amount of time between a secondary's checks for a new |
| 35 | * serial number |
| 36 | * @param expire The amount of time until a secondary expires a zone |
| 37 | * @param minimum The minimum TTL for records in the zone |
| 38 | */ |
| 39 | public |
| 40 | SOARecord(Name name, int dclass, long ttl, Name host, Name admin, |
| 41 | long serial, long refresh, long retry, long expire, long minimum) |
| 42 | { |
| 43 | super(name, Type.SOA, dclass, ttl); |
| 44 | this.host = checkName("host", host); |
| 45 | this.admin = checkName("admin", admin); |
| 46 | this.serial = checkU32("serial", serial); |
| 47 | this.refresh = checkU32("refresh", refresh); |
| 48 | this.retry = checkU32("retry", retry); |
| 49 | this.expire = checkU32("expire", expire); |
| 50 | this.minimum = checkU32("minimum", minimum); |
| 51 | } |
| 52 | |
| 53 | void |
| 54 | rrFromWire(DNSInput in) throws IOException { |
| 55 | host = new Name(in); |
| 56 | admin = new Name(in); |
| 57 | serial = in.readU32(); |
| 58 | refresh = in.readU32(); |
| 59 | retry = in.readU32(); |
| 60 | expire = in.readU32(); |
| 61 | minimum = in.readU32(); |
| 62 | } |
| 63 | |
| 64 | void |
| 65 | rdataFromString(Tokenizer st, Name origin) throws IOException { |
| 66 | host = st.getName(origin); |
| 67 | admin = st.getName(origin); |
| 68 | serial = st.getUInt32(); |
| 69 | refresh = st.getTTLLike(); |
| 70 | retry = st.getTTLLike(); |
| 71 | expire = st.getTTLLike(); |
| 72 | minimum = st.getTTLLike(); |
| 73 | } |
| 74 | |
| 75 | /** Convert to a String */ |
| 76 | String |
| 77 | rrToString() { |
| 78 | StringBuffer sb = new StringBuffer(); |
| 79 | sb.append(host); |
| 80 | sb.append(" "); |
| 81 | sb.append(admin); |
| 82 | if (Options.check("multiline")) { |
| 83 | sb.append(" (\n\t\t\t\t\t"); |
| 84 | sb.append(serial); |
| 85 | sb.append("\t; serial\n\t\t\t\t\t"); |
| 86 | sb.append(refresh); |
| 87 | sb.append("\t; refresh\n\t\t\t\t\t"); |
| 88 | sb.append(retry); |
| 89 | sb.append("\t; retry\n\t\t\t\t\t"); |
| 90 | sb.append(expire); |
| 91 | sb.append("\t; expire\n\t\t\t\t\t"); |
| 92 | sb.append(minimum); |
| 93 | sb.append(" )\t; minimum"); |
| 94 | } else { |
| 95 | sb.append(" "); |
| 96 | sb.append(serial); |
| 97 | sb.append(" "); |
| 98 | sb.append(refresh); |
| 99 | sb.append(" "); |
| 100 | sb.append(retry); |
| 101 | sb.append(" "); |
| 102 | sb.append(expire); |
| 103 | sb.append(" "); |
| 104 | sb.append(minimum); |
| 105 | } |
| 106 | return sb.toString(); |
| 107 | } |
| 108 | |
| 109 | /** Returns the primary name server */ |
| 110 | public Name |
| 111 | getHost() { |
| 112 | return host; |
| 113 | } |
| 114 | |
| 115 | /** Returns the zone administrator's address */ |
| 116 | public Name |
| 117 | getAdmin() { |
| 118 | return admin; |
| 119 | } |
| 120 | |
| 121 | /** Returns the zone's serial number */ |
| 122 | public long |
| 123 | getSerial() { |
| 124 | return serial; |
| 125 | } |
| 126 | |
| 127 | /** Returns the zone refresh interval */ |
| 128 | public long |
| 129 | getRefresh() { |
| 130 | return refresh; |
| 131 | } |
| 132 | |
| 133 | /** Returns the zone retry interval */ |
| 134 | public long |
| 135 | getRetry() { |
| 136 | return retry; |
| 137 | } |
| 138 | |
| 139 | /** Returns the time until a secondary expires a zone */ |
| 140 | public long |
| 141 | getExpire() { |
| 142 | return expire; |
| 143 | } |
| 144 | |
| 145 | /** Returns the minimum TTL for records in the zone */ |
| 146 | public long |
| 147 | getMinimum() { |
| 148 | return minimum; |
| 149 | } |
| 150 | |
| 151 | void |
| 152 | rrToWire(DNSOutput out, Compression c, boolean canonical) { |
| 153 | host.toWire(out, c, canonical); |
| 154 | admin.toWire(out, c, canonical); |
| 155 | out.writeU32(serial); |
| 156 | out.writeU32(refresh); |
| 157 | out.writeU32(retry); |
| 158 | out.writeU32(expire); |
| 159 | out.writeU32(minimum); |
| 160 | } |
| 161 | |
| 162 | } |