Examples with Lookup org.xbill.DNS.Lookup used on opensource projects

Example 1 with Lookup

use of org.xbill.DNS.Lookup in project Smack by igniterealtime.

the class DNSJavaResolver method lookupSRVRecords0.

@Override
protected List<SRVRecord> lookupSRVRecords0(String name, List<HostAddress> failedAddresses, DnssecMode dnssecMode) {
    List<SRVRecord> res = new ArrayList<SRVRecord>();
    Lookup lookup;
    try {
        lookup = new Lookup(name, Type.SRV);
    } catch (TextParseException e) {
        throw new IllegalStateException(e);
    }
    Record[] recs = lookup.run();
    if (recs == null)
        return res;
    for (Record record : recs) {
        org.xbill.DNS.SRVRecord srvRecord = (org.xbill.DNS.SRVRecord) record;
        if (srvRecord != null && srvRecord.getTarget() != null) {
            String host = srvRecord.getTarget().toString();
            int port = srvRecord.getPort();
            int priority = srvRecord.getPriority();
            int weight = srvRecord.getWeight();
            List<InetAddress> hostAddresses = lookupHostAddress0(host, failedAddresses, dnssecMode);
            if (hostAddresses == null) {
                continue;
            }
            SRVRecord r = new SRVRecord(host, port, priority, weight, hostAddresses);
            res.add(r);
        }
    }
    return res;
}

Example 2 with Lookup

use of org.xbill.DNS.Lookup in project opennms by OpenNMS.

the class DNSResolutionMonitor method resolve.

private static boolean resolve(final Name name, final Resolver resolver, final int type) {
    final Lookup lookup = new Lookup(name, type);
    // NMS-9238: Do not use a cache when looking up the record,
    // that kind of defeats the purpose of this monitor :)
    lookup.setCache(null);
    lookup.setResolver(resolver);
    final Record[] records = lookup.run();
    if (records == null) {
        return false;
    }
    return Arrays.stream(records).filter(r -> r.getType() == type).count() > 0;
}

Example 3 with Lookup

use of org.xbill.DNS.Lookup in project nhin-d by DirectProject.

the class DNSConnectionTest method performLookup.

private static void performLookup() throws Exception {
    // turn on debug settings for the DNS client
    Options.set("verbose", "true");
    Cache ch = Lookup.getDefaultCache(DClass.IN);
    ch.clearCache();
    if (servers == null || servers.length == 0)
        servers = ResolverConfig.getCurrentConfig().servers();
    System.out.println("\r\nConfigure DNS resolvers:");
    for (String server : servers) {
        System.out.println("\t" + server);
    }
    System.out.println("\r\nLookup up record " + lookupRec);
    Lookup lu = new Lookup(new Name(lookupRec), recType);
    ExtendedResolver resolver = new ExtendedResolver(servers);
    resolver.setTCP(useTCP);
    lu.setResolver(resolver);
    Record[] retRecords = lu.run();
    if (retRecords != null && retRecords.length > 0)
        System.out.println(retRecords.length + " records found.");
    else
        System.out.println("No records found.");
}

Example 4 with Lookup

use of org.xbill.DNS.Lookup in project nhin-d by DirectProject.

the class RawRecursiveDNSCertQuery method main.

public static void main(String[] args) {
    if (args.length == 0) {
        printUsage();
        System.exit(-1);
    }
    String emailAddress = "";
    String[] servers = null;
    // Check parameters
    for (int i = 0; i < args.length; i++) {
        String arg = args[i];
        // Options
        if (!arg.startsWith("-")) {
            System.err.println("Error: Unexpected argument [" + arg + "]\n");
            printUsage();
            System.exit(-1);
        } else if (arg.equalsIgnoreCase("-add")) {
            if (i == args.length - 1 || args[i + 1].startsWith("-")) {
                System.err.println("Error: Missing email address");
                System.exit(-1);
            }
            emailAddress = args[++i];
        } else if (arg.equals("-server")) {
            if (i == args.length - 1 || args[i + 1].startsWith("-")) {
                System.err.println("Error: Missing DNS server list");
                System.exit(-1);
            }
            servers = args[++i].split(",");
        } else if (arg.equals("-help")) {
            printUsage();
            System.exit(-1);
        } else {
            System.err.println("Error: Unknown argument " + arg + "\n");
            printUsage();
            System.exit(-1);
        }
    }
    if (emailAddress == null || emailAddress.isEmpty()) {
        System.err.println("You must provide an email address.");
        printUsage();
    }
    setServers(servers);
    int attemptCount = 0;
    while (true) {
        try {
            final String lookupName = emailAddress.replace('@', '.');
            // run this forever
            final Lookup lu = new Lookup(new Name(lookupName), Type.CERT);
            lu.setResolver(createExResolver(dnsServers.toArray(new String[dnsServers.size()]), 0, 6));
            lu.setSearchPath((String[]) null);
            // clear the cache
            lu.setCache(new Cache(DClass.IN));
            long startTime = System.currentTimeMillis();
            final Record[] retRecords = lu.run();
            long endTime = System.currentTimeMillis();
            if (retRecords == null || retRecords.length == 0) {
                System.out.println("----- Found no certificates -------");
                System.out.println("\tDNS search took " + (endTime - startTime) + "ms\r\n");
                System.out.println("Failed after " + attemptCount + " successful resolution attempts.");
                System.exit(0);
            } else {
                System.out.println("Found " + retRecords.length + " certificates");
            }
            System.out.println("\tDNS search took " + (endTime - startTime) + "ms\r\n");
            Thread.sleep(1000);
        } catch (Exception e) {
            e.printStackTrace();
        }
        ++attemptCount;
    }
}

Example 5 with Lookup

use of org.xbill.DNS.Lookup in project opennms by OpenNMS.

the class DnsMonitorIT method testDnsJavaWithDnsServer.

@Test
public void testDnsJavaWithDnsServer() throws TextParseException, UnknownHostException {
    final Lookup l = new Lookup("example.com", Type.AAAA);
    // make sure we use a temporary cache so don't get results from a previously cached query
    // from another test
    l.setCache(null);
    final SimpleResolver resolver = new SimpleResolver("::1");
    resolver.setPort(9153);
    l.setResolver(resolver);
    l.run();
    System.out.println("result: " + l.getResult());
    final Record[] answers = l.getAnswers();
    assertEquals(answers.length, 1);
    final Record record = answers[0];
    System.err.println(record.getTTL());
    if (l.getResult() == Lookup.SUCCESSFUL) {
        System.out.println(l.getAnswers()[0].rdataToString());
    }
    assertTrue(l.getResult() == Lookup.SUCCESSFUL);
}