keyupdate.java

sifi-0.1.6.tar.gz 出自http://www.ifi.unizh.ch/ikm/SINUS/firewall/ 一个linux的防火墙工具。

/* ----------------------------------------------------------------------
   The SINUS Firewall -- a TCP/IP packet filter for Linux

   Written within the SINUS project at the University of Zurich,
   SWITCH, Telekurs Payserv AG, ETH Zurich.
   originally based on the sf Firewall Software (C) 1996 by Robert
   Muchsel and Roland Schmid.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   SINUS Firewall resources:
   SINUS Homepage: http://www.ifi.unizh.ch/ikm/SINUS/
   Firewall Homepage: http://www.ifi.unizh.ch/ikm/SINUS/firewall.html
   Frequently asked questions: http://www.ifi.unizh.ch/ikm/SINUS/sf_faq.html
   Mailing list for comments, questions, bug reports: [e-mail]
   ----------------------------------------------------------------------  */




package sfclasses;

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import java.security.*;

public class Keyupdate extends Dialog implements ActionListener {

	/**
	 * Display dialog to enter new password for a login.
	 * @param parent Parent frame
	 * @param hostname Hostname on which to change password
	 * @see Authentication
	 */
  public Keyupdate(Frame parent, String hostname) {

    super(parent, "Enter new password", true);

    // create Keyupdate Dialog
    this.parent = parent;
    setResizable(true);
    setLayout(new GridLayout(6,1));
    setSize(400, 300);

    password = new TextField(20);
		status = new Label();
    Button okButton = new Button("OK");
    okButton.addActionListener(this);
    Button cancelButton = new Button("Cancel");
    cancelButton.addActionListener(this);

    Panel p1 = new Panel();
    Font title = new Font("Helvetica", Font.BOLD, 12);
    p1.setFont(title);
    p1.add(new Label("Enter new password on host "+ hostname));
    Panel p2 = new Panel();
    p2.add(new Label("Password:"));
    p2.add(password);
    Panel p3 = new Panel();
    status.setText("Press OK to proceed.");
    p3.add(status);
    Panel p4 = new Panel();
    p4.add(okButton);
    p4.add(cancelButton);

    add(p1);
    add(p2);
    add(p3);
    add(p4);

		setVisible(true);
  }

	/**
	 * Actionlistener
	 */
  public void actionPerformed(ActionEvent ae) {

    String what = ae.getActionCommand();
    if (what == "Cancel") {
      dispose();
      return;
    }
    if (what == "OK") {
    key = Authentication.calcKey(password.getText(), "100");
      if (key.length() == 0)
        System.out.println("Error calcKey");
      dispose();
      return;
    }
  }

	/**
	 * Get the calculated key
	 * @return String representing the key
	 */
  public String getKey() {
    return key;
  }

  // private data
  private Frame parent;
  private String key;           // generated key to be returned
	private TextField password;
	private Label status;
} // class Keyupdate