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-rw-r--r--src/eu/siacs/conversations/utils/DNSHelper.java60
1 files changed, 49 insertions, 11 deletions
diff --git a/src/eu/siacs/conversations/utils/DNSHelper.java b/src/eu/siacs/conversations/utils/DNSHelper.java
index c5a3eeb0..bfab73e0 100644
--- a/src/eu/siacs/conversations/utils/DNSHelper.java
+++ b/src/eu/siacs/conversations/utils/DNSHelper.java
@@ -6,7 +6,10 @@ import de.measite.minidns.Record;
import de.measite.minidns.Record.TYPE;
import de.measite.minidns.Record.CLASS;
import de.measite.minidns.record.SRV;
+import de.measite.minidns.record.A;
+import de.measite.minidns.record.AAAA;
import de.measite.minidns.record.Data;
+import de.measite.minidns.util.NameUtil;
import java.io.IOException;
import java.net.InetAddress;
@@ -42,12 +45,13 @@ public class DNSHelper {
public static Bundle queryDNS(String host, InetAddress dnsServer) {
Bundle namePort = new Bundle();
try {
+ String qname = "_xmpp-client._tcp." + host;
Log.d("xmppService", "using dns server: " + dnsServer.getHostAddress()
+ " to look up " + host);
DNSMessage message =
client.query(
- "_xmpp-client._tcp." + host,
- TYPE.SRV,
+ qname,
+ TYPE.ANY,
CLASS.IN,
dnsServer.getHostAddress());
@@ -61,15 +65,36 @@ public class DNSHelper {
TreeMap<Integer, ArrayList<SRV>> priorities =
new TreeMap<Integer, ArrayList<SRV>>();
-
- for (Record rr : message.getAnswers()) {
- Data d = rr.getPayload();
- if (d instanceof SRV) {
- SRV srv = (SRV) d;
- if (!priorities.containsKey(srv.getPriority())) {
- priorities.put(srv.getPriority(), new ArrayList<SRV>(2));
+ TreeMap<String, ArrayList<String>> ips4 =
+ new TreeMap<String, ArrayList<String>>();
+ TreeMap<String, ArrayList<String>> ips6 =
+ new TreeMap<String, ArrayList<String>>();
+
+ for (Record[] rrset : new Record[][]{ message.getAnswers(),
+ message.getAdditionalResourceRecords()}) {
+ for (Record rr : rrset) {
+ Data d = rr.getPayload();
+ if (d instanceof SRV && NameUtil.idnEquals(qname,rr.getName())) {
+ SRV srv = (SRV) d;
+ if (!priorities.containsKey(srv.getPriority())) {
+ priorities.put(srv.getPriority(), new ArrayList<SRV>(2));
+ }
+ priorities.get(srv.getPriority()).add(srv);
+ }
+ if (d instanceof A) {
+ A arecord = (A) d;
+ if (!ips4.containsKey(rr.getName())) {
+ ips4.put(rr.getName(), new ArrayList<String>(3));
+ }
+ ips4.get(rr.getName()).add(arecord.toString());
+ }
+ if (d instanceof AAAA) {
+ AAAA aaaa = (AAAA) d;
+ if (!ips6.containsKey(rr.getName())) {
+ ips6.put(rr.getName(), new ArrayList<String>(3));
+ }
+ ips6.get(rr.getName()).add("[" + aaaa.toString() + "]");
}
- priorities.get(srv.getPriority()).add(srv);
}
}
@@ -113,9 +138,22 @@ public class DNSHelper {
// we now have a list of servers to try :-)
// classic name/port pair
- namePort.putString("name", result.get(0).getName());
+ String resultName = result.get(0).getName();
+ namePort.putString("name", resultName);
namePort.putInt("port", result.get(0).getPort());
+ if (ips4.containsKey(resultName)) {
+ // we have an ip!
+ ArrayList<String> ip = ips4.get(resultName);
+ Collections.shuffle(ip, rnd);
+ namePort.putString("ipv4", ip.get(0));
+ }
+ if (ips6.containsKey(resultName)) {
+ ArrayList<String> ip = ips6.get(resultName);
+ Collections.shuffle(ip, rnd);
+ namePort.putString("ipv6", ip.get(0));
+ }
+
// add all other records
int i = 0;
for (SRV srv : result) {