// Fortune server

import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.LocateRegistry;

public class FortuneServer extends UnicastRemoteObject implements Fortune {   

  public FortuneServer() throws java.rmi.RemoteException {
    super();
  }
    
  public String getFortune() throws RemoteException, ServerNotActiveException {

    // ToDo: JNI tcp_wrappers hosts.allow restrictions for ClientHost
    //
    System.out.println( "FortuneServer: getFortune() called from " + this.getClientHost());

    // should really invoke /usr/local/bin/fortune to get random fortune...
    //
    return "Try not to have a good time ... This is supposed to be educational.\n  -- Charles Schulz";
  }

  public static void createPortFile( int port) throws java.io.IOException
  {
    PrintWriter fout = new PrintWriter( new BufferedWriter( new FileWriter( "port")));
    fout.println( port);
    if( fout.checkError()) {
      System.out.println( "FortuneServer: error writing port file.");
      System.exit(1);
    }
    fout.close();
  }

  public static void main(String args[]) throws Exception
  {
    int port = 21099;

    if (args.length == 1)
      port = Integer.parseInt(args[0]);

    // Create and install the security manager
    //
    // skip to avoid creating a security policy file for JDK 1.2 - System.setSecurityManager(new RMISecurityManager());

    try {
      LocateRegistry.createRegistry(port);

      Fortune f = new FortuneServer();
      Naming.rebind("rmi://:" + port + "/FortuneServer", f);
 
      System.out.println("FortuneServer: created and bound in the registry on port " + port);

    } catch (Exception e) {

      System.out.println("FortuneServer: " + e);
      System.exit(1);
    }

    createPortFile( port);
  }
}