/* Peddler.java by Mark D. LaDue */

/* March 15, 1998 */

/* Copyright (c) 1998 Mark D. LaDue
   You may study, use, modify, and distribute this example for any purpose.
   This example is provided WITHOUT WARRANTY either expressed or implied.  */

/* Peddler.java fixes SFped.class in Finjan's SurfinCheck 1.0 to renew its
   demo license.  To use it, do the following:

   1. Compile Peddler.java to obtain Peddler.class.

   2. Place the resulting Peddler.class in the SurfinCheck folder, along
      with SFped.class.

   3. Update Sfped.class with the following command:

      java Peddler

   SurfinCheck will now run as before, and its splash screen will again
   report that the evaluation license has 30 days before it expires. */

import java.io.*;
import java.util.*;

public class Peddler
{
    public static void main(String[] argv) {

        String hack = "SFped.class";

        Date now = new Date();

        try {

// Start by opening the file for reading and writing
            RandomAccessFile victim = new RandomAccessFile(hack, "rw");

// Put the current day at byte 15, put the current month at byte 20,
// and put the current year at byte 25

            victim.seek(14);
            victim.writeByte(now.getDate());
            victim.seek(19);
            victim.writeByte(now.getMonth());
            victim.seek(24);
            victim.writeByte(now.getYear());

// That's all for now
            victim.close();
        } catch (IOException ioe) {System.err.println("Oops!");}
    System.out.println("SFped.class has been updated successfully.");
    }
}