add cli version, code cleanups and cosmetic changes

JAuth/AuthenticatorCLI.java

@@ -0,0 +1,84 @@
+package JAuth;
+
+import java.security.GeneralSecurityException;
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.io.*;
+
+public class AuthenticatorCLI {
+  Timer timer;
+
+  public static void main(String[] args) {
+    System.out.println("\nAuthenticator Started!");
+    System.out.println(":----------------------------:--------:");
+    System.out.println(":       Code Wait Time       :  Code  :");
+    System.out.println(":----------------------------:--------:");
+    AuthenticatorCLI main = new AuthenticatorCLI();
+    String inFile=args[0];
+
+    try {
+      RandomAccessFile raf= new RandomAccessFile(inFile,"r");
+      FileReader fileReader = new FileReader(raf.getFD());
+      BufferedReader bufReader  = new LineNumberReader(fileReader,65536);
+      main.reminder(bufReader.readLine());
+    }
+    catch (IOException e) {
+      e.printStackTrace();
+    }
+  }
+
+  public void reminder(String secret) {
+    timer = new Timer();
+    timer.scheduleAtFixedRate(new TimedPin(secret), 0, 1 * 1000);
+  }
+
+  int count=1;
+
+  class TimedPin extends TimerTask {
+    private String secret;
+
+    public TimedPin (String secret){
+      this.secret=secret;
+    }
+
+    String previouscode = "";
+
+    public void run() {
+      String newout = AuthenticatorCLI.computePin(secret,null);
+      if(previouscode.equals(newout)) {
+        System.out.print(".");
+      } else {
+        if(count<=30) {
+          for (int i=count+1; i<=30;i++) {
+            System.out.print("+");
+          }
+        }
+
+        System.out.println(": "+ newout + " :");
+        count=0;
+      }
+        previouscode = newout;
+        count++;
+    }
+  }
+
+  public static String computePin(String secret, Long counter) {
+    if (secret == null || secret.length() == 0) {
+      return "Null or empty secret";
+    }
+
+    try {
+      final byte[] keyBytes = Base32String.decode(secret);
+      Mac mac = Mac.getInstance("HMACSHA1");
+      mac.init(new SecretKeySpec(keyBytes, ""));
+      PasscodeGenerator pcg = new PasscodeGenerator(mac);
+      return pcg.generateTimeoutCode();
+    } catch (GeneralSecurityException e) {
+      return "General security exception";
+    } catch (Base32String.DecodingException e) {
+      return "Decoding exception";
+    }
+  }
+}