chg: replaced ant with gradle
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312
modules/jala/code/DnsClient.js
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312
modules/jala/code/DnsClient.js
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//
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// Jala Project [http://opensvn.csie.org/traccgi/jala]
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//
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// Copyright 2004 ORF Online und Teletext GmbH
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//
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// Licensed under the Apache License, Version 2.0 (the ``License'');
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an ``AS IS'' BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// $Revision$
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// $LastChangedBy$
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// $LastChangedDate$
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// $HeadURL$
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//
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/**
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* @fileoverview Fields and methods of the jala.DnsClient class.
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*/
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// Define the global namespace for Jala modules
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if (!global.jala) {
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global.jala = {};
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}
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/**
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* Jala dependencies
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*/
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app.addRepository(getProperty("jala.dir", "modules/jala") +
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"/lib/javadns.jar");
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/**
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* Constructs a new DnsClient object.
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* @class This is a wrapper around the Dns Client by wonderly.org
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* providing methods for querying Dns servers. For more information
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* about the Java DNS client visit
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* <a href="https://javadns.dev.java.net/">https://javadns.dev.java.net/</a>.
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* Please mind that the nameserver specified must accept queries on port
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* 53 TCP (the Java DNS client used doesn't support UDP nameserver queries),
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* and that reverse lookups are not supported.
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* @param {String} nameServer IP-Address or FQDN of nameserver to query
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* @constructor
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*/
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jala.DnsClient = function(nameServer) {
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/**
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* Contains the IP Adress/FQDN of the name server to query.
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* @type String
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*/
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this.nameServer = nameServer;
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if (!this.nameServer) {
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throw "jala.DnsClient: missing nameserver argument";
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} else {
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// test if required javadns library is available
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try {
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var clazz = java.lang.Class.forName("org.wonderly.net.dns.Query",
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false, app.getClassLoader())
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} catch (e) {
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throw "jala.DnsClient requires JavaDNS.jar"
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+ " in lib/ext or application directory "
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+ "[https://javadns.dev.java.net/]";
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}
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}
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return this;
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};
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/** @ignore */
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jala.DnsClient.PKG = Packages.org.wonderly.net.dns;
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/**
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* The "A" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_A = jala.DnsClient.PKG.Question.TYPE_A;
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/**
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* The "CNAME" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_CNAME = jala.DnsClient.PKG.Question.TYPE_CNAME;
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/**
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* The "MX" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_MX = jala.DnsClient.PKG.Question.TYPE_MX;
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/**
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* The "NS" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_NS = jala.DnsClient.PKG.Question.TYPE_NS;
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/**
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* The "PTR" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_PTR = jala.DnsClient.PKG.Question.TYPE_PTR;
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/**
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* The "SOA" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_SOA = jala.DnsClient.PKG.Question.TYPE_SOA;
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/**
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* The "TXT" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_TXT = jala.DnsClient.PKG.Question.TYPE_TXT;
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/**
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* The "WKS" record/query type.
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* @type Number
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* @final
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*/
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jala.DnsClient.TYPE_WKS = jala.DnsClient.PKG.Question.TYPE_WKS;
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/**
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* Queries the nameserver for a specific domain
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* and the given type of record.
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* @param {String} dName The domain name to query for
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* @param {Number} queryType The type of records to retrieve
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* @returns The records retrieved from the nameserver
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* @type org.wonderly.net.dns.RR
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*/
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jala.DnsClient.prototype.query = function(dName, queryType) {
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if (dName == null) {
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throw new Error("no domain-name to query for");
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}
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if (queryType == null) {
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queryType = jala.DnsClient.TYPE_A;
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}
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// construct the question for querying the nameserver
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var question = new jala.DnsClient.PKG.Question(dName,
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queryType,
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jala.DnsClient.PKG.Question.CLASS_IN);
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// construct the query
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var query = new jala.DnsClient.PKG.Query(question);
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// run the query
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query.runQuery(this.nameServer);
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// wrap the records received in instances of jala.DnsClient.Record
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var answers = query.getAnswers();
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var arr = [];
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for (var i=0;i<answers.length;i++) {
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arr[i] = new jala.DnsClient.Record(answers[i]);
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}
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return arr;
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};
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/**
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* Convenience method to query for the MX-records
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* of the domain passed as argument.
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* @param {String} dName The domain name to query for
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* @returns The records retrieved from the nameserver
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* @type org.wonderly.net.dns.RR
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*/
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jala.DnsClient.prototype.queryMailHost = function (dName) {
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return this.query(dName, this.TYPE_MX);
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};
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/** @ignore */
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jala.DnsClient.toString = function() {
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return "[jala.DnsClient]";
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};
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/** @ignore */
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jala.DnsClient.prototype.toString = function() {
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return "[jala.DnsClient (" + this.nameServer + ")]";
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};
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/**
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* Constructs a new instance of jala.DnsClient.Record.
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* @class Instances of this class wrap record data as received
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* from the nameserver.
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* @param {org.wonderly.net.dns.RR} data The data as received from
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* the nameserver
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* @returns A newly constructed Record instance
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* @constructor
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*/
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jala.DnsClient.Record = function(data) {
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/**
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* The type of the nameserver record represented by this Answer instance.
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* @type Number
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* @see #TYPE_A
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* @see #TYPE_CNAME
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* @see #TYPE_HINFO
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* @see #TYPE_MX
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* @see #TYPE_NS
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* @see #TYPE_PTR
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* @see #TYPE_SOA
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* @see #TYPE_TXT
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* @see #TYPE_WKS
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*/
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this.type = data.getType();
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/**
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* The name of the host. This will only be set for records
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* of type A, AAAA and NS.
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* @type String
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* @see #TYPE_A
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* @see #TYPE_AAAA
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* @see #TYPE_NS
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*/
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this.host = null;
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/**
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* The IP address of the host. This will only be set for records
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* of type A and AAAA
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* @type String
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* @see #TYPE_A
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* @see #TYPE_AAAA
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*/
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this.ipAddress = null;
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/**
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* The CNAME of this record. This will only be set for records
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* of type CNAME
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* @type String
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* @see #TYPE_CNAME
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*/
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this.cname = null;
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/**
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* The name of the mail exchanging server. This is only set for
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* records of type MX
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* @type String
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* @see #TYPE_MX
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*/
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this.mx = null;
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/**
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* The email address responsible for a name server. This property
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* will only be set for records of type SOA
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* @type String
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* @see #TYPE_SOA
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*/
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this.email = null;
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/**
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* Descriptive text as received from the nameserver. This is only
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* set for records of type TXT
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* @type String
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* @see #TYPE_TXT
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*/
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this.text = null;
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/**
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* Returns the wrapped nameserver record data
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* @returns The wrapped data
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* @type org.wonderly.net.dns.RR
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*/
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this.getData = function() {
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return data;
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};
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/**
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* Main constructor body
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*/
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switch (data.getClass()) {
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case jala.DnsClient.PKG.ARR:
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case jala.DnsClient.PKG.AAAARR:
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this.host = data.getHost();
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this.ipAddress = data.getIPAddress();
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break;
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case jala.DnsClient.PKG.NSRR:
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this.host = data.getHost();
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break;
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case jala.DnsClient.PKG.CNAMERR:
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this.cname = data.getCName();
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break;
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case jala.DnsClient.PKG.MXRR:
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this.mx = data.getExchanger();
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break;
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case jala.DnsClient.PKG.SOARR:
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this.host = data.getNSHost();
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this.email = data.getResponsibleEmail();
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break;
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case jala.DnsClient.PKG.TXTRR:
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this.text = data.getText();
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break;
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default:
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break;
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}
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return this;
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};
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/** @ignore */
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jala.DnsClient.Record.prototype.toString = function() {
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return "[jala.DnsClient.Record]";
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};
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