Name: yyT116575 Date: 11/06/2000


Java(TM) Plug-In: Version 1.3.0-C
Verwendung der JRE-Version 1.3.0 Java HotSpot(TM) Client VM


I'm developing an Applet, which reads web pages with HttpURLConnection(). For
authentication I've overwritten the method 'protected PasswordAuthentication
getPasswordAuthentication()' of a subclass of java.net.Authenticator and
registered a new instance by calling MyAuthenticator.setDefault(new
MyAuthenticator()).

When Plug-In 1.2.2 is installed (not depending of JRE 1.2.2 or 1.3),
everytime the servers response is a 401, my own MyAuthenticator.
getPasswordAuthentication()-Method is called.

After changing to J2SE1.3 with Plug-In 1.3 my own method is not called any
more (not depending of JRE 1.2.2 or 1.3)!!!

I've made some print-outs in the class java.net.Authenticator of the rt.jar
and it seems, the the method java.net.Authenticator.setDefault() is called
automatically before the applet starts. So it is not possible to register an
instance of my own Authenticator.

I've made a copy of the java console in four different cases. The two with
Plug-in 1.2.2 is working fine, the two with Plug-In 1.3 does not!

Here it is:

Successful Connections:
-----------------------

Java(TM) Plug-in: Version 1.2.2.p001
Using JRE version 1.2.2
  User home directory = C:\WINNT\Profiles\fbreuer
  User has overriden browser's proxy settings.
Proxy Configuration: Manual Configuration
     Proxy:
     Proxy Overrides:

JAR cache disabled.
<<<<< Applet starting >>>>>
<<<FB<< URLConnect.URLConnect() >>>>>
<<<FB>>> MyAuthenticator.MyAuthenticator() new instance created!
<<<1.2.2>>> java.net.Authenticator.setDefault()
<<<1.2.2>>> java.net.Authenticator.setDefault() New Authenticator registered!
<<<FB<< URLConnect.fetchURL(String) >>>>>
<<<1.2.2>>> java.net.HttpURLConnection()
Opening http://pirobase.pironet.com/servlet/PB/menu/1046875/index.html no proxy
Opening
http://pirobase.pironet.com/servlet/PB/-s/1gsivqj1qwq2rt14yq4g2nqb7r91uorn4l/men
u/1046875/index.html no proxy
<<<1.2.2>>> java.net.Authenticator.requestPasswordAuthentication()
<<<1.2.2>>> java.net.Authenticator.reset()
<<<FB>>> MyAuthenticator.getPasswordAuthentication()
<<<FB>>> MyAuthenticator.createLoginDialog()
Opening
http://pirobase.pironet.com/servlet/PB/-s/1gsivqj1qwq2rt14yq4g2nqb7r91uorn4l/men
u/1046875/index.html no proxy
<Info> Response: 200

---------------

Java(TM) Plug-In: Version 1.2.2.p001
Verwendung der JRE-Version 1.3.0
Home-Verzeichnis des Benutzers = C:\WINNT\Profiles\fbreuer
Proxy-Einstellungen des Browsers wurden vom Benutzer ?berschrieben.
Proxy-Konfiguration:Manuelle Konfiguration
     Proxy:
     Proxy-?berschreibungen:

JAR cache disabled.
<<<<< Applet starting >>>>>
<<<FB<< URLConnect.URLConnect() >>>>>
<<<FB>>> MyAuthenticator.MyAuthenticator() new instance created!
<<<1.3.0>>> java.net.Authenticator.setDefault()
<<<1.3.0>>> java.net.Authenticator.setDefault() New Authenticator registered!
<<<FB<< URLConnect.fetchURL(String) >>>>>
<<<1.3.0>>> java.net.HttpURLConnection()
Wird ge?ffnethttp://pirobase.pironet.com/servlet/PB/menu/1046875/index.html Kein
Proxy
Wird
ge?ffnethttp://pirobase.pironet.com/servlet/PB/-s/1rkktab6d8rda1a18bvh1qazoag14b
ystc/menu/1046875/index.html Kein Proxy
<<<1.3.0>>> java.net.Authenticator.requestPasswordAuthentication()
<<<1.3.0>>> java.net.Authenticator.reset()
<<<FB>>> MyAuthenticator.getPasswordAuthentication()
<<<FB>>> MyAuthenticator.createLoginDialog()
Wird
ge?ffnethttp://pirobase.pironet.com/servlet/PB/-s/1rkktab6d8rda1a18bvh1qazoag14b
ystc/menu/1046875/index.html Kein Proxy
<Info> Response: 200



Unsuccessful Connections:
-------------------------

Java(TM) Plug-In: Version 1.3.0-C
Verwendung der JRE-Version 1.2.2 Classic VM
Home-Verzeichnis des Benutzers = C:\WINNT\Profiles\fbreuer
Proxy-Einstellungen des Browsers wurden vom Benutzer ?berschrieben.
Proxy-Konfiguration:Kein Proxy

<<<1.2.2>>> java.net.Authenticator.setDefault()
<<<1.2.2>>> java.net.Authenticator.setDefault() New Authenticator registered!
JAR cache disabled.
<<<<< Applet starting >>>>>
<<<FB<< URLConnect.URLConnect() >>>>>
<<<1.2.2>>> java.net.Authenticator.setDefault()
<<<1.2.2>>> java.net.Authenticator.setDefault() Old Authenticator used!
<<<FB<< URLConnect.fetchURL(String) >>>>>
<<<1.2.2>>> java.net.HttpURLConnection()
<<<1.2.2>>> java.net.Authenticator.requestPasswordAuthentication()
<<<1.2.2>>> java.net.Authenticator.reset()
<Info> Response: 200

---------------

Java(TM) Plug-In: Version 1.3.0-C
Verwendung der JRE-Version 1.3.0 Java HotSpot(TM) Client VM
Home-Verzeichnis des Benutzers = C:\WINNT\Profiles\fbreuer
Proxy-Einstellungen des Browsers wurden vom Benutzer ?berschrieben.
Proxy-Konfiguration:Kein Proxy

<<<1.3.0>>> java.net.Authenticator.setDefault()
<<<1.3.0>>> java.net.Authenticator.setDefault() New Authenticator registered!
JAR cache disabled.
<<<<< Applet starting >>>>>
<<<FB<< URLConnect.URLConnect() >>>>>
<<<1.3.0>>> java.net.Authenticator.setDefault()
<<<1.3.0>>> java.net.Authenticator.setDefault() Old Authenticator used!
<<<FB<< URLConnect.fetchURL(String) >>>>>
<<<1.3.0>>> java.net.HttpURLConnection()
<<<1.3.0>>> java.net.Authenticator.requestPasswordAuthentication()
<<<1.3.0>>> java.net.Authenticator.reset()
<Info> Response: 200




1. SOURCE CODE

/**
 * ServerAuth.java
 *
 *
 * @author: Frank Breuer
 *
 * @version: 0.1
 *
 * Applet to make a brief connection to a web server to verify the
 * behaviour of registering the standard authenticator in J2SE1.3.
 *
 * history: 2000/09/22 created
 */


import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;



public class ServerAuth extends JApplet {
    public void init() {
        System.out.println("<<<<< Applet starting >>>>>");
        Container contentPane = getContentPane();
        contentPane.add(new URLConnect());
    }
}


class URLConnect extends JPanel {

    private MyAuthenticator myAuth = null;

private JTextField tf = new JTextField();
private JTextArea ta = new JTextArea();

public URLConnect() {

System.out.println("<<<FB<< URLConnect.URLConnect() >>>>>");

// Install Authenticator
        myAuth = new MyAuthenticator();
MyAuthenticator.setDefault(myAuth);

// Setup screen
        setLayout(new BorderLayout());
add(tf, BorderLayout.NORTH);
        tf.setBorder(BorderFactory.createTitledBorder(
                BorderFactory.createEtchedBorder(), "URL"));
ta.setEditable(false);
add(ta, BorderLayout.CENTER);
tf.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String s = tf.getText();
if (s.length() != 0)
ta.setText(fetchURL(s));
}
});
        ta.setBorder(BorderFactory.createTitledBorder(
                BorderFactory.createEtchedBorder(), "Responsecode"));

        setBorder(BorderFactory.createTitledBorder(
                BorderFactory.createEtchedBorder(), "URLConnect"));
}

private String fetchURL(String urlString) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);

try {
System.out.println("<<<FB<< URLConnect.fetchURL(String)>>>>>");

URL url = new URL(urlString);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("GET");
conn.setDoInput(true);
conn.setFollowRedirects(true);
conn.setAllowUserInteraction(false);
conn.setUseCaches(false);
conn.connect();
            System.out.println("<Info> Response: " + conn.getResponseCode());
            pw.println(conn.getResponseMessage());

} catch(MalformedURLException e) {
pw.println("Invalid URL");
} catch(IOException e) {
pw.println("Error reading URL");
}
return sw.toString();
}
}




class MyAuthenticator extends Authenticator {

private static String hostapplet;

private static MyAuthenticator authenticator;
private static PasswordAuthentication localAuth;

private MyLoginDialog dialog;



    public MyAuthenticator() {
        System.out.println("<<<FB>>> MyAuthenticator.MyAuthenticator() " +
                "new instance created!");
    }


protected PasswordAuthentication getPasswordAuthentication() {

        System.out.println("<<<FB>>> MyAuthenticator." +
                "getPasswordAuthentication()");
    MyAuthenticator.localAuth = createLoginDialog();
return MyAuthenticator.localAuth;
}


private PasswordAuthentication createLoginDialog() {

        System.out.println("<<<FB>>> MyAuthenticator.createLoginDialog()");
        if (dialog == null)
            dialog = new MyLoginDialog();
dialog.show();
return dialog.getAuth();
}
}




class MyLoginDialog extends JDialog
{
private JPanel north, south;
private JLabel nameLabel, passwordLabel, infoLabel;
private JTextField nameTextField;
private JPasswordField passwordField;
private JButton loginButton, cancelButton;
private String username;
private char password[];
private PasswordAuthentication privateAuth;



    public MyLoginDialog()
{
//
// sets the title of the dialog field.
//
setModal(true);
setTitle("Login");
setSize(277, 215);

//
//
// fill northern components
//
//

north = new JPanel();
north.setLayout(null);
north.setPreferredSize(new Dimension(277, 165));



//
// creating labels
//

        // Username
nameLabel = new JLabel("Username:", JLabel.LEFT);
nameLabel.setBounds(10, 60, 90, 20);
north.add(nameLabel);

        // Password
passwordLabel = new JLabel("Password:", JLabel.LEFT);
passwordLabel.setBounds(10, 90, 90, 20);
north.add(passwordLabel);



//
// creating textfields
//
nameTextField = new JTextField();
nameTextField.setBounds(100, 60, 157, 20);
north.add(nameTextField);

passwordField = new JPasswordField();
passwordField.setBounds(100, 90, 157, 20);
north.add(passwordField);

getContentPane().add(north,BorderLayout.CENTER);



//
//
// fill southern components
//
//

//
// create JPanel for buttons
//
south = new JPanel();
south.setLayout(new FlowLayout(FlowLayout.RIGHT, 10, 10));

//
// create buttons
//

// login
loginButton = new JButton("Login");
        loginButton.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent ae)
                {
char[] authArray;

username = nameTextField.getText();
nameTextField.setText("");
password = passwordField.getPassword();
passwordField.setText("");

privateAuth = new PasswordAuthentication(username, password);

                    // Delete attributes for userID and password
                    username = "";
                    password = new String("").toCharArray();

                    nameTextField.requestFocus();
                    hide();
                }
            });
south.add(loginButton);



// cancel
cancelButton = new JButton("Cancel");
        cancelButton.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent ae)
                {
privateAuth = null;
  hide();
               }
            });
south.add(cancelButton);


        getContentPane().add(south, BorderLayout.SOUTH);

setDefaultCloseOperation(HIDE_ON_CLOSE);
}


/**
* Returns the actual PasswordAuthentication,
* which was generated from the login dialog.
*
* @return PasswordAuthentication - actual PasswordAuthentication.
*/
public PasswordAuthentication getAuth()
{
return privateAuth;
}
}
(Review ID: 109922)
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