DnsOverXmppMiniDnsResolver.java

  1. /**
  2.  *
  3.  * Copyright 2019 Florian Schmaus
  4.  *
  5.  * Licensed under the Apache License, Version 2.0 (the "License");
  6.  * you may not use this file except in compliance with the License.
  7.  * You may obtain a copy of the License at
  8.  *
  9.  *     http://www.apache.org/licenses/LICENSE-2.0
  10.  *
  11.  * Unless required by applicable law or agreed to in writing, software
  12.  * distributed under the License is distributed on an "AS IS" BASIS,
  13.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14.  * See the License for the specific language governing permissions and
  15.  * limitations under the License.
  16.  */
  17. package org.jivesoftware.smackx.dox.resolver.minidns;

  18. import java.io.IOException;

  19. import org.jivesoftware.smackx.dox.DnsOverXmppResolver;

  20. import org.minidns.DnsClient;
  21. import org.minidns.dnsmessage.DnsMessage;
  22. import org.minidns.dnsmessage.Question;
  23. import org.minidns.dnsqueryresult.DnsQueryResult;
  24. import org.minidns.dnssec.DnssecClient;
  25. import org.minidns.dnssec.DnssecQueryResult;

  26. public final class DnsOverXmppMiniDnsResolver implements DnsOverXmppResolver {

  27.     public static final DnsOverXmppMiniDnsResolver INSTANCE = new DnsOverXmppMiniDnsResolver(new DnsClient(), new DnssecClient());

  28.     private final DnsClient dnsClient;
  29.     private final DnssecClient dnssecClient;

  30.     DnsOverXmppMiniDnsResolver(DnsClient dnsClient, DnssecClient dnssecClient) {
  31.         this.dnsClient = dnsClient;
  32.         this.dnssecClient = dnssecClient;
  33.     }

  34.     @Override
  35.     public DnsMessage resolve(DnsMessage query) throws IOException {
  36.         Question question = query.getQuestion();

  37.         final DnsQueryResult dnsQueryResult;
  38.         if (query.isDnssecOk()) {
  39.             DnssecQueryResult dnssecQueryResult = dnssecClient.queryDnssec(question);
  40.             dnsQueryResult = dnssecQueryResult.dnsQueryResult;
  41.         } else {
  42.             dnsQueryResult = dnsClient.query(question);
  43.         }

  44.         return dnsQueryResult.response;
  45.     }

  46. }