1 files changed, 70 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/DnsResource.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/DnsResource.java
new file mode 100644
index 000000000..1c66ffeca
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/resources/DnsResource.java
@@ -0,0 +1,70 @@
+package org.sufficientlysecure.keychain.pgp.linked.resources;
+
+import android.content.Context;
+
+import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedResource;
+import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
+
+import java.net.URI;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import de.measite.minidns.Client;
+import de.measite.minidns.DNSMessage;
+import de.measite.minidns.Question;
+import de.measite.minidns.Record;
+import de.measite.minidns.Record.TYPE;
+import de.measite.minidns.record.TXT;
+
+public class DnsResource extends LinkedResource {
+
+    static Pattern magicPattern =
+            Pattern.compile("pgpid\\+cookie=([a-zA-Z0-9]+)(?:#|;)([a-zA-Z0-9]+)");
+
+    DnsResource(Set<String> flags, HashMap<String, String> params, URI uri) {
+        super(flags, params, uri);
+    }
+
+    public static String generateText (Context context, byte[] fingerprint, String nonce) {
+
+        return "pgpid+cookie="
+                + KeyFormattingUtils.convertFingerprintToHex(fingerprint) + ";" + nonce + "";
+
+    }
+
+    public static DnsResource createNew (String domain) {
+        HashSet<String> flags = new HashSet<String>();
+        HashMap<String,String> params = new HashMap<String,String>();
+        URI uri = URI.create("dns:" + domain);
+        return create(flags, params, uri);
+    }
+
+    public static DnsResource create(Set<String> flags, HashMap<String,String> params, URI uri) {
+        if ( ! ("dns".equals(uri.getScheme())
+                && (flags == null || flags.isEmpty())
+                && (params == null || params.isEmpty()))) {
+            return null;
+        }
+        return new DnsResource(flags, params, uri);
+    }
+
+    @Override
+    protected String fetchResource (OperationLog log, int indent) {
+
+        Client c = new Client();
+        DNSMessage msg = c.query(new Question("mugenguild.com", TYPE.TXT));
+        Record aw = msg.getAnswers()[0];
+        TXT txt = (TXT) aw.getPayload();
+        return txt.getText().toLowerCase();
+
+    }
+
+    @Override
+    protected Matcher matchResource(OperationLog log, int indent, String res) {
+        return magicPattern.matcher(res);
+    }
+}