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package foo; | |
import java.io.File; | |
import java.io.IOException; | |
import java.util.ArrayList; | |
import java.util.HashSet; | |
import java.util.List; | |
import java.util.Set; | |
import org.xbill.DNS.AAAARecord; | |
import org.xbill.DNS.ARecord; | |
import org.xbill.DNS.CNAMERecord; | |
import org.xbill.DNS.ExtendedResolver; | |
import org.xbill.DNS.Lookup; | |
import org.xbill.DNS.NSRecord; | |
import org.xbill.DNS.Record; | |
import org.xbill.DNS.Resolver; | |
import org.xbill.DNS.SimpleResolver; | |
import org.xbill.DNS.Type; | |
import com.google.common.base.Charsets; | |
import com.google.common.base.Joiner; | |
import com.google.common.io.Files; | |
import com.google.common.net.InternetDomainName; | |
public class DNSTest { | |
private static Joiner joiner = Joiner.on(",").skipNulls(); | |
public static void main(String[] args) throws IOException { | |
List<String> domains = Files.readLines(new File("C:\\workspace\\Test\\top500.domains.09.16.csv"), Charsets.UTF_8); | |
domains.remove(0); //remove header row | |
System.out.println("domain,ttl,aaaa-ttl,cname-ttl,miltiple-ttls,ns-root,ns-ttl,a-count,aaaa-count,a-records,aaaa-records,ns-records,cname"); | |
Set<Exception> errors = new HashSet<>(); | |
for (String domainRecord : domains) { | |
String[] details = domainRecord.split(","); | |
String domain = details[1].replace("/", "").replace("\"", ""); | |
Set<Long> aTtls = new HashSet<>(); | |
Set<Long> aaaaTtls = new HashSet<>(); | |
Set<Long> nsTtls = new HashSet<>(); | |
Long cnameTtl = null; | |
Set<String> aAddresses = new HashSet<>(); | |
Set<String> aaaaAddresses = new HashSet<>(); | |
Set<String> nsAddresses = new HashSet<>(); | |
String cnameAddress = ""; | |
try { | |
Record[] cnames = new Lookup(domain, Type.NS).run(); | |
if (cnames != null) { | |
for (Record record : cnames) { | |
NSRecord rec = (NSRecord) record; | |
nsTtls.add(rec.getTTL()); | |
nsAddresses.add(rec.getTarget().toString()); | |
} | |
} | |
} catch (Exception ex) { | |
errors.add(ex); | |
} | |
Resolver resolver; | |
try { | |
resolver = new ExtendedResolver(nsAddresses.toArray(new String[0])); | |
} catch (Exception ex) { | |
resolver = new SimpleResolver(); | |
} | |
try { | |
Lookup lookup = new Lookup(domain, Type.A); | |
lookup.setResolver(resolver); | |
Record[] rs = lookup.run(); | |
if (rs != null) { | |
for (Record record : rs) { | |
ARecord rec = (ARecord) record; | |
aTtls.add(rec.getTTL()); | |
aAddresses.add(rec.getAddress().getHostAddress()); | |
} | |
} | |
} catch (Exception ex) { | |
errors.add(ex); | |
} | |
try { | |
Lookup lookup = new Lookup(domain, Type.AAAA); | |
lookup.setResolver(resolver); | |
Record[] ipv6 = lookup.run(); | |
if (ipv6 != null) { | |
for (Record record : ipv6) { | |
AAAARecord rec = (AAAARecord) record; | |
aaaaTtls.add(rec.getTTL()); | |
aaaaAddresses.add(rec.getAddress().getHostAddress()); | |
} | |
} | |
} catch (Exception ex) { | |
errors.add(ex); | |
} | |
try { | |
Lookup lookup = new Lookup(domain, Type.CNAME); | |
lookup.setResolver(resolver); | |
Record[] cnames = lookup.run(); | |
if (cnames != null) { | |
for (Record record : cnames) { | |
CNAMERecord rec = (CNAMERecord) record; | |
cnameTtl = rec.getTTL(); | |
cnameAddress = rec.getTarget().toString(); | |
} | |
} | |
} catch (Exception ex) { | |
errors.add(ex); | |
} | |
List<String> line = new ArrayList<>(); | |
line.add(domain); | |
line.add(getTtl(aTtls)); | |
line.add(getTtl(aaaaTtls)); | |
line.add(cnameTtl != null ? cnameTtl.toString() : ""); | |
line.add(String.valueOf(hasMultipleTtls(aTtls, aaaaTtls))); | |
line.add(getNSRoot(nsAddresses, errors)); | |
line.add(getTtl(nsTtls)); | |
line.add(String.valueOf(aAddresses.size())); | |
line.add(String.valueOf(aaaaAddresses.size())); | |
line.add("\"" + joiner.join(aAddresses) + "\""); | |
line.add("\"" + joiner.join(aaaaAddresses) + "\""); | |
line.add("\"" + joiner.join(nsAddresses) + "\""); | |
line.add(cnameAddress); | |
System.out.println(joiner.join(line)); | |
} | |
System.out.println("-------"); | |
for (Exception ex : errors) { | |
ex.printStackTrace(); | |
} | |
} | |
private static String getNSRoot(Set<String> nsAddresses, Set<Exception> errors) { | |
if (nsAddresses.isEmpty()) { | |
return ""; | |
} | |
try { | |
return InternetDomainName.from(nsAddresses.iterator().next()).topPrivateDomain().name(); | |
} catch (Exception ex) { | |
errors.add(ex); | |
return nsAddresses.iterator().next(); | |
} | |
} | |
private static boolean hasMultipleTtls(Set<Long> aTtls, Set<Long> aaaaTtls) { | |
if (aTtls.size() > 1 || aaaaTtls.size() > 1) { | |
return true; | |
} | |
if (!aTtls.isEmpty() && !aaaaTtls.isEmpty()) { | |
if (aTtls.iterator().next().longValue() != aaaaTtls.iterator().next().longValue()) { | |
return true; | |
} | |
} | |
return false; | |
} | |
private static String getTtl(Set<Long> ttls) { | |
if (ttls.isEmpty()) { | |
return ""; | |
} | |
return ttls.iterator().next().toString(); | |
} | |
} |
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