SimpleAuthenticator.java
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上传日期:2013-02-04
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文件大小:5k
源码类别:
Java编程
开发平台:
Java
- /*
- * @(#)SimpleAuthenticator.java 1.7 01/05/23
- *
- * Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistribution in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND
- * ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES OR LIABILITIES
- * SUFFERED BY LICENSEE AS A RESULT OF OR RELATING TO USE, MODIFICATION
- * OR DISTRIBUTION OF THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
- * SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
- * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS
- * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended
- * for use in the design, construction, operation or maintenance of any
- * nuclear facility.
- */
- /*
- * @(#)SimpleAuthenticator.java 1.7 01/05/23
- *
- * Copyright (c) 1996-1998 by Sun Microsystems, Inc.
- * All Rights Reserved.
- */
- import javax.mail.*;
- import java.net.InetAddress;
- import java.awt.*;
- import javax.swing.*;
- /**
- * Simple Authenticator for requesting password information.
- *
- * @version 1.7, 01/05/23
- * @author Christopher Cotton
- * @author Bill Shannon
- */
- public class SimpleAuthenticator extends Authenticator {
- Frame frame;
- String username;
- String password;
- public SimpleAuthenticator(Frame f) {
- this.frame = f;
- }
- protected PasswordAuthentication getPasswordAuthentication() {
- // given a prompt?
- String prompt = getRequestingPrompt();
- if (prompt == null)
- prompt = "Please login...";
- // protocol
- String protocol = getRequestingProtocol();
- if (protocol == null)
- protocol = "Unknown protocol";
- // get the host
- String host = null;
- InetAddress inet = getRequestingSite();
- if (inet != null)
- host = inet.getHostName();
- if (host == null)
- host = "Unknown host";
- // port
- String port = "";
- int portnum = getRequestingPort();
- if (portnum != -1)
- port = ", port " + portnum + " ";
- // Build the info string
- String info = "Connecting to " + protocol + " mail service on host " +
- host + port;
- //JPanel d = new JPanel();
- // XXX - for some reason using a JPanel here causes JOptionPane
- // to display incorrectly, so we workaround the problem using
- // an anonymous JComponent.
- JComponent d = new JComponent() { };
- GridBagLayout gb = new GridBagLayout();
- GridBagConstraints c = new GridBagConstraints();
- d.setLayout(gb);
- c.insets = new Insets(2, 2, 2, 2);
- c.anchor = GridBagConstraints.WEST;
- c.gridwidth = GridBagConstraints.REMAINDER;
- c.weightx = 0.0;
- d.add(constrain(new JLabel(info), gb, c));
- d.add(constrain(new JLabel(prompt), gb, c));
- c.gridwidth = 1;
- c.anchor = GridBagConstraints.EAST;
- c.fill = GridBagConstraints.NONE;
- c.weightx = 0.0;
- d.add(constrain(new JLabel("Username:"), gb, c));
- c.anchor = GridBagConstraints.EAST;
- c.fill = GridBagConstraints.HORIZONTAL;
- c.gridwidth = GridBagConstraints.REMAINDER;
- c.weightx = 1.0;
- String user = getDefaultUserName();
- JTextField username = new JTextField(user, 20);
- d.add(constrain(username, gb, c));
- c.gridwidth = 1;
- c.fill = GridBagConstraints.NONE;
- c.anchor = GridBagConstraints.EAST;
- c.weightx = 0.0;
- d.add(constrain(new JLabel("Password:"), gb, c));
- c.anchor = GridBagConstraints.EAST;
- c.fill = GridBagConstraints.HORIZONTAL;
- c.gridwidth = GridBagConstraints.REMAINDER;
- c.weightx = 1.0;
- JPasswordField password = new JPasswordField("", 20);
- d.add(constrain(password, gb, c));
- // XXX - following doesn't work
- if (user != null && user.length() > 0)
- password.requestFocus();
- else
- username.requestFocus();
- int result = JOptionPane.showConfirmDialog(frame, d, "Login",
- JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);
- if (result == JOptionPane.OK_OPTION)
- return new PasswordAuthentication(username.getText(),
- password.getText());
- else
- return null;
- }
- private Component constrain(Component cmp,
- GridBagLayout gb, GridBagConstraints c) {
- gb.setConstraints(cmp, c);
- return (cmp);
- }
- }