Util: Improve LookupDest CLI, add to CommandLine

core/java/src/net/i2p/client/naming/LookupDest.java

@@ -30,8 +30,9 @@ import net.i2p.data.Hash;
  * Using an existing I2PSession is much more efficient and
  * flexible than using this class.
  *
+ * Public since 0.9.45 only for main(). Not a public API.
  */
-class LookupDest {
+public class LookupDest {
 
     private static final long DEFAULT_TIMEOUT = 15*1000;
 
@@ -120,11 +121,34 @@ class LookupDest {
         return opts;
     }
 
-    public static void main(String args[]) throws I2PSessionException {
+    /**
-        Destination dest = lookupBase32Hash(I2PAppContext.getGlobalContext(), args[0]);
+     *  TODO: does not support hostnames, extended b32, I2CP options...
-        if (dest == null)
+     */
-            System.out.println("Destination not found!");
+    public static void main(String args[]) {
-        else
+        if (args.length != 1) {
-            System.out.println(dest.toBase64());
+            System.err.println("Usage: LookupDest base32");
+            System.exit(1);
+        }
+        String arg = args[0];
+        if (arg.endsWith(".b32.i2p"))
+            arg = arg.substring(0, arg.length() - 8);
+        if (arg.length() != 52) {
+            System.err.println("Bad Base32 format");
+            System.exit(1);
+        }
+        byte[] h = Base32.decode(arg);
+        if (h == null) {
+            System.err.println("Bad Base32 format");
+            System.exit(1);
+        }
+        try {
+            Destination dest = lookupHash(I2PAppContext.getGlobalContext(), h);
+            if (dest == null)
+                System.err.println("Destination not found!");
+            else
+                System.out.println(dest.toBase64());
+        } catch (I2PSessionException ise) {
+            ise.printStackTrace();
+        }
     }
 }

core/java/src/net/i2p/util/CommandLine.java

@@ -21,6 +21,7 @@ public class CommandLine {
     protected static final List<String> CLASSES = Arrays.asList(new String[] {
         "freenet.support.CPUInformation.CPUID",
         "net.i2p.CoreVersion",
+        "net.i2p.client.naming.LookupDest",
         "net.i2p.crypto.Blinding",
         "net.i2p.crypto.CertUtil",
         "net.i2p.crypto.CryptoCheck",