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

Example 6 with SimpleResolver

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

the class DnsMonitorIT method testDnsJavaQuadARecord.

@Test
public void testDnsJavaQuadARecord() throws IOException {
    assumeTrue(!Boolean.getBoolean("skipIpv6Tests"));
    final Lookup l = new Lookup("ipv6.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());
    if (l.getResult() == Lookup.SUCCESSFUL) {
        System.out.println(l.getAnswers()[0].rdataToString());
    }
    assertTrue(l.getResult() == Lookup.SUCCESSFUL);
}

Example 7 with SimpleResolver

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

the class DnsMonitorIT method testNoAnswer.

@Test
@JUnitDNSServer(port = 9153, zones = {})
public void testNoAnswer() throws Exception {
    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();
    // and NXRRSET record should be sent meaning that the server has no records for
    // example.com at all.  This results in a null answers.  This is result 4 I think
    System.out.println("result: " + l.getResult());
    final Record[] answers = l.getAnswers();
    assertNull(answers);
}

Example 8 with SimpleResolver

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

the class ReverseDnsProvisioningAdapter method afterPropertiesSet.

/**
 * <p>afterPropertiesSet</p>
 *
 * @throws java.lang.Exception if any.
 */
@Override
public void afterPropertiesSet() throws Exception {
    String dnsServer = System.getProperty("importer.adapter.dns.server");
    if (!StringUtils.isBlank(dnsServer)) {
        LOG.info("DNS property found: {}", dnsServer);
        if (dnsServer.contains(":")) {
            final String[] serverAddress = dnsServer.split(":");
            m_resolver = new SimpleResolver(serverAddress[0]);
            m_resolver.setPort(Integer.valueOf(serverAddress[1]));
        } else {
            m_resolver = new SimpleResolver(dnsServer);
        }
        // Doesn't work for some reason, haven't figured out why yet
        String key = System.getProperty("importer.adapter.dns.privatekey");
        if (key != null && key.length() > 0) {
            m_signature = key;
            m_resolver.setTSIGKey(TSIG.fromString(m_signature));
        }
    } else {
        LOG.warn("no DNS server configured, ReverseDnsProvisioningAdapter will not do anything!");
    }
}

Example 9 with SimpleResolver

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

the class DnsSdDiscoveryAdvertiser method sendToServer.

protected void sendToServer(final IServiceInfo serviceInfo, final boolean mode) {
    Assert.isNotNull(serviceInfo);
    Assert.isLegal(serviceInfo.getServiceID() instanceof DnsSdServiceID);
    final DnsSdServiceID serviceID = (DnsSdServiceID) serviceInfo.getServiceID();
    try {
        // TYPE.SRV
        final Record srvRecord = serviceID.toSRVRecord();
        // TYPE.TXT
        final Record[] txtRecords = serviceID.toTXTRecords(srvRecord);
        final Name name = serviceID.getDnsName();
        final String[] registrationDomains = getRegistrationDomains(serviceID.getServiceTypeID());
        for (int i = 0; i < registrationDomains.length; i++) {
            final Name zone = new Name(registrationDomains[i]);
            // $NON-NLS-1$
            final Name fqdn = new Name(name.toString() + "." + zone.toString());
            final Update update = new Update(zone);
            // TYPE.SRV
            if (mode == ADD) {
                // TODO add absent/present condition checks
                update.replace(srvRecord.withName(fqdn));
            } else {
                update.delete(srvRecord.withName(fqdn));
            }
            // TYPE.TXT
            for (int j = 0; j < txtRecords.length; j++) {
                if (mode == ADD) {
                    update.add(txtRecords[j].withName(fqdn));
                } else {
                    update.delete(txtRecords[j].withName(fqdn));
                }
            }
            // set up a the resolver for the given domain (a scope might use different domains)
            final Collection dnsServers = getUpdateDomain(zone);
            if (dnsServers.size() == 0) {
                throw new DnsSdDiscoveryException(Messages.DnsSdDiscoveryAdvertiser_No_DynDns_Servers_Found);
            }
            for (final Iterator iterator = dnsServers.iterator(); iterator.hasNext(); ) {
                final SRVRecord dnsServer = (SRVRecord) iterator.next();
                // try to send msg and fail gracefully if more dns servers are available
                final Name target = dnsServer.getTarget();
                final Message response;
                final InetAddress byName;
                try {
                    byName = InetAddress.getByName(target.toString());
                    ((SimpleResolver) resolver).setAddress(byName);
                    ((SimpleResolver) resolver).setPort(dnsServer.getPort());
                    response = resolver.send(update);
                } catch (UnknownHostException uhe) {
                    if (iterator.hasNext()) {
                        continue;
                    } else {
                        throw new DnsSdDiscoveryException(uhe);
                    }
                } catch (EOFException eof) {
                    if (iterator.hasNext()) {
                        continue;
                    } else {
                        throw new DnsSdDiscoveryException(eof);
                    }
                }
                // catch some errors and fall back to the next dnsServer
                if (response.getRcode() != Rcode.NOERROR) {
                    if (iterator.hasNext()) {
                        continue;
                    } else {
                        throw DnsSdDiscoveryException.getException(response.getRcode());
                    }
                }
            }
        }
    } catch (Exception e) {
        throw new DnsSdDiscoveryException(e);
    }
}

Example 10 with SimpleResolver

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

the class DnsSdDiscoveryLocator method connect.

/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.ecf.core.IContainer#connect(org.eclipse.ecf.core.identity.ID,
	 * org.eclipse.ecf.core.security.IConnectContext)
	 */
public void connect(ID aTargetID, IConnectContext connectContext) throws ContainerConnectException {
    // connect can only be called once
    if (targetID != null || getConfig() == null) {
        throw new ContainerConnectException(Messages.DnsSdDiscoveryLocator_Container_Already_Connected);
    }
    // fall back to the search path as last resort
    if (aTargetID == null || !(aTargetID instanceof DnsSdServiceTypeID)) {
        ResolverConfig config = new ResolverConfig();
        Name[] searchPaths = config.searchPath();
        if (searchPaths != null && searchPaths.length > 0) {
            targetID = new DnsSdServiceTypeID();
            targetID.setSearchPath(searchPaths);
        } else {
            throw new ContainerConnectException(Messages.DnsSdDiscoveryLocator_No_Target_ID);
        }
    } else {
        final Namespace ns = getConnectNamespace();
        try {
            targetID = (DnsSdServiceTypeID) ns.createInstance(new Object[] { aTargetID });
        } catch (IDCreateException e) {
            throw new ContainerConnectException(e);
        }
    }
    // instantiate a default resolver
    if (resolver == null) {
        try {
            resolver = new SimpleResolver();
        } catch (UnknownHostException e) {
            throw new ContainerConnectException(e);
        }
    }
    // read browsing domains for the given targetID/searchpath and merge with existing
    targetID.addSearchPath(getBrowsingDomains(targetID));
    // done setting up this provider, send event
    fireContainerEvent(new ContainerConnectingEvent(this.getID(), targetID, connectContext));
    fireContainerEvent(new ContainerConnectedEvent(this.getID(), targetID));
}