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Code Issues Releases Wiki Activity

Added DNS logging

This commit is contained in:
M66B 2020-09-07 17:09:13 +02:00
parent c13aa5eefd
commit 2ff7f99858
1 changed files with 14 additions and 2 deletions
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16
app/src/main/java/eu/faircode/email/DnsHelper.java
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@ -29,11 +29,14 @@ import android.os.Build;
import androidx.annotation.NonNull;
import org.xbill.DNS.Flags;
import org.xbill.DNS.Lookup;
import org.xbill.DNS.MXRecord;
import org.xbill.DNS.Message;
import org.xbill.DNS.OPTRecord;
import org.xbill.DNS.Record;
import org.xbill.DNS.SRVRecord;
import org.xbill.DNS.Section;
import org.xbill.DNS.SimpleResolver;
import org.xbill.DNS.TextParseException;
import org.xbill.DNS.Type;
@ -132,6 +135,10 @@ public class DnsHelper {
Log.i("Using Android DNS resolver");
Semaphore sem = new Semaphore(0);
DnsResolver resolver = DnsResolver.getInstance();
OPTRecord optRecord = new OPTRecord(4096, 0, 0, Flags.DO, null);
query.addRecord(optRecord, Section.ADDITIONAL);
query.getHeader().setFlag(Flags.AD);
Log.i("DNS query=" + query.toString());
resolver.rawQuery(
null,
query.toWire(),
@ -167,9 +174,14 @@ public class DnsHelper {
ex = new IOException("interrupted");
}
if (ex == null)
if (ex == null) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
Network active = (cm == null ? null : cm.getActiveNetwork());
LinkProperties props = (active == null ? null : cm.getLinkProperties(active));
Log.i("DNS private=" + (props == null ? null : props.isPrivateDnsActive()));
Log.i("DNS answer=" + result.toString() + " flags=" + result.getHeader().printFlags());
return result;
else
} else
throw ex;
}
}