Java Code Examples for org.xbill.DNS.Lookup#run()
The following examples show how to use
org.xbill.DNS.Lookup#run() .
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Example 1
| Source File: GoogleResolverCheck.java From entrada with GNU General Public License v3.0 | 7 votes |
|
@Override
protected List<String> fetch() {
try {
Resolver resolver = new SimpleResolver();
// dns resolvers may take a long time to return a response.
resolver.setTimeout(timeout);
Lookup l =
new Lookup(StringUtils.endsWith(hostname, ".") ? hostname : hostname + ".", Type.TXT);
// always make sure the cache is empty
l.setCache(new Cache());
l.setResolver(resolver);
Record[] records = l.run();
if (records != null && records.length > 0) {
return parse(records[0]);
}
} catch (Exception e) {
log.error("Problem while adding Google resolvers, continue without", e);
}
log.error("No Google resolver addresses found");
return Collections.emptyList();
}
Example 2
| Source File: XBillDnsSrvResolver.java From dns-java with Apache License 2.0 | 7 votes |
|
@Override
public List<LookupResult> resolve(final String fqdn) {
Lookup lookup = lookupFactory.forName(fqdn);
Record[] queryResult = lookup.run();
switch (lookup.getResult()) {
case Lookup.SUCCESSFUL:
return toLookupResults(queryResult);
case Lookup.HOST_NOT_FOUND:
// fallthrough
case Lookup.TYPE_NOT_FOUND:
LOG.warn("No results returned for query '{}'; result from XBill: {} - {}",
fqdn, lookup.getResult(), lookup.getErrorString());
return ImmutableList.of();
default:
throw new DnsException(
String.format("Lookup of '%s' failed with code: %d - %s ",
fqdn, lookup.getResult(), lookup.getErrorString()));
}
}
Example 3
| Source File: lookup.java From dnsjava with BSD 2-Clause "Simplified" License | 6 votes |
|
public static void main(String[] args) throws Exception {
int type = Type.A;
int start = 0;
if (args.length > 2 && args[0].equals("-t")) {
type = Type.value(args[1]);
if (type < 0) {
throw new IllegalArgumentException("invalid type");
}
start = 2;
}
for (int i = start; i < args.length; i++) {
Lookup l = new Lookup(args[i], type);
l.run();
printAnswer(args[i], l);
}
}
Example 4
| Source File: Helperfunctions.java From open-rmbt with Apache License 2.0 | 6 votes |
|
public static String reverseDNSLookup(final InetAddress adr)
{
try
{
final Name name = ReverseMap.fromAddress(adr);
final Lookup lookup = new Lookup(name, Type.PTR);
lookup.setResolver(new SimpleResolver());
lookup.setCache(null);
final Record[] records = lookup.run();
if (lookup.getResult() == Lookup.SUCCESSFUL)
for (final Record record : records)
if (record instanceof PTRRecord)
{
final PTRRecord ptr = (PTRRecord) record;
return ptr.getTarget().toString();
}
}
catch (final Exception e)
{
}
return null;
}
Example 5
| Source File: DNSResolver.java From burp-javascript-security-extension with GNU General Public License v3.0 | 5 votes |
|
/**
* Follow the CNAME breadcrumb trail and find any which can't resolve
* @param hostName a string of the hostname, or fqdn, to lookup
* @return a set of strings which list the CNAME entries which could not be resolved
*/
public Set<String> getBadCnames(String hostName){
Set<String> retval = new TreeSet<String>();
try {
Lookup thisLookup = new Lookup(hostName, CNAME);
thisLookup.setResolver(myResolver);
Record[] results = thisLookup.run();
if (results != null){
List<Record> records = Arrays.asList(results);
for (Record record : records){
CNAMERecord thisRecord = (CNAMERecord) record;
String target = thisRecord.getTarget().toString();
if (hasRecordsOfType(target, CNAME)){
// check for more cnames down the tree
retval.addAll(getBadCnames(target));
} else {
if (!(hasRecordsOfType(target, A) || hasRecordsOfType(target, AAAA))){
// This one doesn't point to anything
retval.add(target);
}
}
}
}
}
catch (TextParseException e){
System.err.println("[SRI][-] There was an error parsing the name " + hostName);
}
return retval;
}
Example 6
| Source File: Utils.java From ShadowsocksRR with Apache License 2.0 | 5 votes |
|
public static String resolve(String host, int addrType) {
try {
Lookup lookup = new Lookup(host, addrType);
SimpleResolver resolver = new SimpleResolver("114.114.114.114");
resolver.setTimeout(5);
lookup.setResolver(resolver);
Record[] result = lookup.run();
if (result == null || result.length == 0) {
return null;
}
List<Record> records = new ArrayList<>(Arrays.asList(result));
Collections.shuffle(records);
for (Record r : records) {
switch (addrType) {
case Type.A:
return ((ARecord) r).getAddress().getHostAddress();
case Type.AAAA:
return ((AAAARecord) r).getAddress().getHostAddress();
default:
break;
}
}
} catch (Exception e) {
VayLog.e(TAG, "resolve", e);
app.track(e);
}
return null;
}
Example 7
| Source File: Utils.java From Maying with Apache License 2.0 | 5 votes |
|
public static String resolve(String host, int addrType) {
try {
Lookup lookup = new Lookup(host, addrType);
SimpleResolver resolver = new SimpleResolver("114.114.114.114");
resolver.setTimeout(5);
lookup.setResolver(resolver);
Record[] result = lookup.run();
if (result == null || result.length == 0) {
return null;
}
List<Record> records = new ArrayList<>(Arrays.asList(result));
Collections.shuffle(records);
for (Record r : records) {
switch (addrType) {
case Type.A:
return ((ARecord) r).getAddress().getHostAddress();
case Type.AAAA:
return ((AAAARecord) r).getAddress().getHostAddress();
default:
break;
}
}
} catch (Exception e) {
VayLog.e(TAG, "resolve", e);
ShadowsocksApplication.app.track(e);
}
return null;
}
Example 8
| Source File: DNSJavaService.java From james-project with Apache License 2.0 | 5 votes |
|
/**
* Looks up DNS records of the specified type for the specified name.
* <p/>
* This method is a public wrapper for the private implementation method
*
* @param namestr the name of the host to be looked up
* @param type the type of record desired
* @param typeDesc the description of the record type, for debugging purpose
*/
protected Record[] lookup(String namestr, int type, String typeDesc) throws TemporaryResolutionException {
// Name name = null;
try {
// name = Name.fromString(namestr, Name.root);
Lookup l = new Lookup(namestr, type);
l.setCache(cache);
l.setResolver(resolver);
l.setCredibility(dnsCredibility);
l.setSearchPath(searchPaths);
Record[] r = l.run();
try {
if (l.getResult() == Lookup.TRY_AGAIN) {
throw new TemporaryResolutionException("DNSService is temporary not reachable");
} else {
return r;
}
} catch (IllegalStateException ise) {
// This is okay, because it mimics the original behaviour
// TODO find out if it's a bug in DNSJava
LOGGER.warn("Error determining result ", ise);
throw new TemporaryResolutionException("DNSService is temporary not reachable");
}
// return rawDNSLookup(name, false, type, typeDesc);
} catch (TextParseException tpe) {
// TODO: Figure out how to handle this correctly.
LOGGER.error("Couldn't parse name {}", namestr, tpe);
return null;
}
}
Example 9
| Source File: AddressLookup.java From mireka with Apache License 2.0 | 5 votes |
|
private Record[] queryAddressRecords(Name name) throws SendException {
Lookup lookup = new Lookup(name);
Record[] records = lookup.run();
switch (lookup.getResult()) {
case Lookup.SUCCESSFUL:
return records;
case Lookup.TYPE_NOT_FOUND:
throw new SendException("Host " + name + " has no address record ("
+ lookup.getErrorString() + ")",
EnhancedStatus.PERMANENT_UNABLE_TO_ROUTE);
case Lookup.HOST_NOT_FOUND:
throw new SendException("Host " + name + " is not found ("
+ lookup.getErrorString() + ")",
EnhancedStatus.PERMANENT_UNABLE_TO_ROUTE);
case Lookup.TRY_AGAIN:
throw new SendException(
"DNS network failure while looking up address of " + name
+ ": " + lookup.getErrorString(),
EnhancedStatus.TRANSIENT_DIRECTORY_SERVER_FAILURE);
case Lookup.UNRECOVERABLE:
throw new SendException(
"Unrecoverable DNS error while looking up address of "
+ name + ": " + lookup.getErrorString(),
EnhancedStatus.PERMANENT_UNABLE_TO_ROUTE);
default:
throw new SendException(
"Unknown DNS status while looking up address of " + name
+ ": " + lookup.getResult() + ". "
+ lookup.getErrorString(),
EnhancedStatus.PERMANENT_INTERNAL_ERROR);
}
}
Example 10
| Source File: Helperfunctions.java From open-rmbt with Apache License 2.0 | 5 votes |
|
public static Long getASN(final InetAddress adr)
{
try
{
final Name postfix;
if (adr instanceof Inet6Address)
postfix = Name.fromConstantString("origin6.asn.cymru.com");
else
postfix = Name.fromConstantString("origin.asn.cymru.com");
final Name name = getReverseIPName(adr, postfix);
System.out.println("lookup: " + name);
final Lookup lookup = new Lookup(name, Type.TXT);
lookup.setResolver(new SimpleResolver());
lookup.setCache(null);
final Record[] records = lookup.run();
if (lookup.getResult() == Lookup.SUCCESSFUL)
for (final Record record : records)
if (record instanceof TXTRecord)
{
final TXTRecord txt = (TXTRecord) record;
@SuppressWarnings("unchecked")
final List<String> strings = txt.getStrings();
if (strings != null && !strings.isEmpty())
{
final String result = strings.get(0);
final String[] parts = result.split(" ?\\| ?");
if (parts != null && parts.length >= 1)
return new Long(parts[0]);
}
}
}
catch (final Exception e)
{
}
return null;
}
Example 11
| Source File: Helperfunctions.java From open-rmbt with Apache License 2.0 | 5 votes |
|
public static String getASName(final long asn)
{
try
{
final Name postfix = Name.fromConstantString("asn.cymru.com.");
final Name name = new Name(String.format("AS%d", asn), postfix);
System.out.println("lookup: " + name);
final Lookup lookup = new Lookup(name, Type.TXT);
lookup.setResolver(new SimpleResolver());
lookup.setCache(null);
final Record[] records = lookup.run();
if (lookup.getResult() == Lookup.SUCCESSFUL)
for (final Record record : records)
if (record instanceof TXTRecord)
{
final TXTRecord txt = (TXTRecord) record;
@SuppressWarnings("unchecked")
final List<String> strings = txt.getStrings();
if (strings != null && !strings.isEmpty())
{
System.out.println(strings);
final String result = strings.get(0);
final String[] parts = result.split(" ?\\| ?");
if (parts != null && parts.length >= 1)
return parts[4];
}
}
}
catch (final Exception e)
{
}
return null;
}
Example 12
| Source File: Helperfunctions.java From open-rmbt with Apache License 2.0 | 5 votes |
|
public static String getAScountry(final long asn)
{
try
{
final Name postfix = Name.fromConstantString("asn.cymru.com.");
final Name name = new Name(String.format("AS%d", asn), postfix);
System.out.println("lookup: " + name);
final Lookup lookup = new Lookup(name, Type.TXT);
lookup.setResolver(new SimpleResolver());
lookup.setCache(null);
final Record[] records = lookup.run();
if (lookup.getResult() == Lookup.SUCCESSFUL)
for (final Record record : records)
if (record instanceof TXTRecord)
{
final TXTRecord txt = (TXTRecord) record;
@SuppressWarnings("unchecked")
final List<String> strings = txt.getStrings();
if (strings != null && !strings.isEmpty())
{
final String result = strings.get(0);
final String[] parts = result.split(" ?\\| ?");
if (parts != null && parts.length >= 1)
return parts[1];
}
}
}
catch (final Exception e)
{
}
return null;
}
Example 13
| Source File: DNSUtils.java From buddycloud-android with Apache License 2.0 | 5 votes |
|
/**
* Adapted from https://code.google.com/p/asmack/source/browse/src/custom/org/jivesoftware/smack/util/DNSUtil.java
*
* @param domain
* @return
* @throws TextParseException
*/
@SuppressWarnings("unchecked")
private static String resolveAPITXT(String domain) throws TextParseException {
Lookup lookup = new Lookup(TXT_PREFIX + domain, Type.TXT);
Record recs[] = lookup.run();
if (recs == null) {
throw new RuntimeException("Could not lookup domain.");
}
Map<String, String> stringMap = null;
for (Record rec : recs) {
String rData = rec.rdataToString().replaceAll("\"", "");
List<String> rDataTokens = Arrays.asList(rData.split("\\s+"));
TXTRecord record = new TXTRecord(rec.getName(), rec.getDClass(),
rec.getTTL(), rDataTokens);
List<String> strings = record.getStrings();
if (strings != null && strings.size() > 0) {
stringMap = parseStrings(strings);
break;
}
}
if (stringMap == null) {
throw new RuntimeException("Domain has no TXT records for buddycloud.");
}
String host = stringMap.get("host");
String protocol = stringMap.get("protocol");
String path = stringMap.get("path");
String port = stringMap.get("port");
path = path == null || path.equals("/") ? "" : path;
port = port == null ? "" : port;
return protocol + "://" + host + ":" + port + path;
}
Example 14
| Source File: DNSResolver.java From spring-boot with Apache License 2.0 | 3 votes |
|
public static void main(String[] args) {
// System.err.println("Outcome: "
// + CheckEmailObj.checkEmail("[email protected]"));
String qqhostName = "qq.com";
String qqhostName2 = "outlook.com";
System.out.println(DNSResolver.checkDNS(qqhostName2, false));
// System.out.println(DNSResolver.checkDNS("outlook.com", true));
try {
Lookup lookup = new Lookup(qqhostName2, Type.A);
lookup.run();
for(Record r : lookup.getAnswers())
System.out.println(r);
} catch (TextParseException e) {
e.printStackTrace();
}
// System.out.println( MailChecker.validate("[email protected]"));
}
