diff options
Diffstat (limited to 'src/eu/siacs/conversations/utils/DNSHelper.java')
| -rw-r--r-- | src/eu/siacs/conversations/utils/DNSHelper.java | 60 |
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) { |