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

Example 26 with Lookup

use of org.xbill.DNS.Lookup in project ecf by eclipse.

the class DnsSdDiscoveryAdvertiser method getAuthoritativeNameServer.

protected Collection getAuthoritativeNameServer(final Name zone) throws TextParseException {
    // $NON-NLS-1$ //$NON-NLS-2$
    Trace.trace(Activator.PLUGIN_ID, DnsSdDebugOptions.METHODS_TRACING, this.getClass(), "getAuthoritativeNameServer(Name zone)", "Trying to find authoritative name server");
    final Set result = new HashSet();
    final Name name = new Name(_DNS_UPDATE + zone);
    // query for NS records
    Lookup query = new Lookup(zone, Type.NS);
    query.setResolver(resolver);
    Record[] queryResult = query.run();
    // TODO file bug upstream that queryResult may never be null
    int length = queryResult == null ? 0 : queryResult.length;
    for (int j = 0; j < length; j++) {
        final Record record = queryResult[j];
        if (record instanceof NSRecord) {
            final NSRecord nsRecord = (NSRecord) record;
            final Name target = nsRecord.getTarget();
            result.add(new SRVRecord(name, DClass.IN, nsRecord.getTTL(), 0, 0, SimpleResolver.DEFAULT_PORT, target));
        }
    }
    // query for primary ns in SOA record (may overwrite/be equal to one of the ns records)
    query = new Lookup(zone, Type.SOA);
    query.setResolver(resolver);
    queryResult = query.run();
    // TODO file bug upstream that queryResult may never be null
    length = queryResult == null ? 0 : queryResult.length;
    for (int j = 0; j < length; j++) {
        final Record record = queryResult[j];
        if (record instanceof SOARecord) {
            final SOARecord soaRecord = (SOARecord) record;
            result.add(new SRVRecord(name, DClass.IN, soaRecord.getTTL(), 0, 0, SimpleResolver.DEFAULT_PORT, soaRecord.getHost()));
        }
    }
    return result;
}

Example 27 with Lookup

use of org.xbill.DNS.Lookup in project ecf by eclipse.

the class DnsSdDiscoveryContainerAdapter method getSRVRecord.

protected SortedSet getSRVRecord(Lookup query, Comparator aComparator) {
    final SortedSet srvRecords = new TreeSet(aComparator);
    query.setResolver(resolver);
    final Record[] queryResult = query.run();
    // TODO file bug upstream that queryResult may never be null
    final int length = queryResult == null ? 0 : queryResult.length;
    for (int j = 0; j < length; j++) {
        Record[] srvQueryResult = null;
        final Record record = queryResult[j];
        if (record instanceof PTRRecord) {
            final PTRRecord ptrRecord = (PTRRecord) record;
            final Name target = ptrRecord.getTarget();
            final Lookup srvQuery = new Lookup(target, Type.SRV);
            srvQuery.setResolver(resolver);
            srvQueryResult = srvQuery.run();
        } else if (record instanceof SRVRecord) {
            srvQueryResult = new SRVRecord[] { (SRVRecord) record };
        } else {
            // avoid NPE
            srvQueryResult = new SRVRecord[0];
        }
        srvRecords.addAll(Arrays.asList(srvQueryResult));
    }
    return srvRecords;
}

Example 28 with Lookup

use of org.xbill.DNS.Lookup in project ecf by eclipse.

the class DnsSdDiscoveryContainerAdapter method getRecords.

protected Record[] getRecords(final DnsSdServiceTypeID serviceTypeId) {
    final List result = new ArrayList();
    final Lookup[] queries = serviceTypeId.getInternalQueries();
    for (int i = 0; i < queries.length; i++) {
        final Lookup query = queries[i];
        query.setResolver(resolver);
        final Record[] queryResult = query.run();
        if (queryResult != null) {
            result.addAll(Arrays.asList(queryResult));
        }
    }
    return (Record[]) result.toArray(new Record[result.size()]);
}

Example 29 with Lookup

use of org.xbill.DNS.Lookup in project ecf by eclipse.

the class DnsSdDiscoveryLocator method getServiceInfos.

private List getServiceInfos(Collection srvQueryResult) {
    List infos = new ArrayList();
    for (Iterator iterator = srvQueryResult.iterator(); iterator.hasNext(); ) {
        SRVRecord srvRecord = (SRVRecord) iterator.next();
        long ttl = srvRecord.getTTL();
        int priority = srvRecord.getPriority();
        int weight = srvRecord.getWeight();
        int port = srvRecord.getPort();
        Name target = srvRecord.getTarget();
        String host = target.toString();
        host = host.substring(0, host.length() - 1);
        IServiceTypeID aServiceTypeID = new DnsSdServiceTypeID(getConnectNamespace(), srvRecord.getName());
        // query for txt records (attributes)
        Properties props = new Properties();
        Lookup txtQuery = new Lookup(srvRecord.getName(), Type.TXT);
        txtQuery.setResolver(resolver);
        Record[] txtQueryResults = txtQuery.run();
        int length = txtQueryResults == null ? 0 : txtQueryResults.length;
        for (int l = 0; l < length; l++) {
            TXTRecord txtResult = (TXTRecord) txtQueryResults[l];
            List strings = txtResult.getStrings();
            for (Iterator itr = strings.iterator(); itr.hasNext(); ) {
                String str = (String) itr.next();
                // $NON-NLS-1$
                String[] split = str.split("=");
                props.put(split[0], split[1]);
            }
        }
        String path = props.getProperty(DNS_SD_PATH);
        String proto = props.getProperty(DNS_SD_PTCL) == null ? aServiceTypeID.getProtocols()[0] : props.getProperty(DNS_SD_PTCL);
        // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
        URI uri = URI.create(proto + "://" + host + ":" + port + (path == null ? "" : path));
        IServiceInfo info = new ServiceInfo(uri, host, aServiceTypeID, priority, weight, new ServiceProperties(props), ttl);
        infos.add(info);
    }
    return infos;
}

Example 30 with Lookup

use of org.xbill.DNS.Lookup in project ecf by eclipse.

the class DNSJavaResolver method lookupSRVRecords.

public List<SRVRecord> lookupSRVRecords(String name) {
    List<SRVRecord> res = new ArrayList<SRVRecord>();
    try {
        Lookup lookup = new Lookup(name, Type.SRV);
        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();
                SRVRecord r;
                try {
                    r = new SRVRecord(host, port, priority, weight);
                } catch (Exception e) {
                    continue;
                }
                res.add(r);
            }
        }
    } catch (Exception e) {
    }
    return res;
}