001/**
002 *
003 * Copyright 2019 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.dox.resolver.minidns;
018
019import java.io.IOException;
020
021import org.jivesoftware.smackx.dox.DnsOverXmppResolver;
022
023import org.minidns.DnsClient;
024import org.minidns.dnsmessage.DnsMessage;
025import org.minidns.dnsmessage.Question;
026import org.minidns.dnsqueryresult.DnsQueryResult;
027import org.minidns.dnssec.DnssecClient;
028import org.minidns.dnssec.DnssecQueryResult;
029
030public final class DnsOverXmppMiniDnsResolver implements DnsOverXmppResolver {
031
032    public static final DnsOverXmppMiniDnsResolver INSTANCE = new DnsOverXmppMiniDnsResolver(new DnsClient(), new DnssecClient());
033
034    private final DnsClient dnsClient;
035    private final DnssecClient dnssecClient;
036
037    DnsOverXmppMiniDnsResolver(DnsClient dnsClient, DnssecClient dnssecClient) {
038        this.dnsClient = dnsClient;
039        this.dnssecClient = dnssecClient;
040    }
041
042    @Override
043    public DnsMessage resolve(DnsMessage query) throws IOException {
044        Question question = query.getQuestion();
045
046        final DnsQueryResult dnsQueryResult;
047        if (query.isDnssecOk()) {
048            DnssecQueryResult dnssecQueryResult = dnssecClient.queryDnssec(question);
049            dnsQueryResult = dnssecQueryResult.dnsQueryResult;
050        } else {
051            dnsQueryResult = dnsClient.query(question);
052        }
053
054        return dnsQueryResult.response;
055    }
056
057}