// Close socket and IO streams, change appearance/functionality of some components
private void closeAll() throws IOException {
displayArea.append("\nConnection closing");
output.close();
input.close();
connection.close();
// We are no longer connected
connection = null;
// Change components
serverField.setEditable(true);
connectButton.setLabel("Connect to server above");
enterField.setEnabled(false);
}
public babylonServerWindow(babylonServer parent, String Name) {
super(Name);
server = parent;
myLayout = new GridBagLayout();
setLayout(myLayout);
p = new Panel();
p.setLayout(myLayout);
listening = new Label(server.strings.get(thisClass, "listenport") + " " + server.port);
p.add(
listening,
new babylonConstraints(
0,
0,
1,
1,
0.0,
0.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0,
0));
logChat = new Checkbox(server.strings.get(thisClass, "logchats"), server.logChats);
logChat.addItemListener(this);
p.add(
logChat,
new babylonConstraints(
1,
0,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.NONE,
new Insets(0, 0, 0, 0),
0,
0));
userList = new List(4, false);
userList.addItemListener(this);
p.add(
userList,
new babylonConstraints(
0,
1,
1,
5,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.BOTH,
new Insets(0, 0, 5, 0),
0,
0));
userAdmin = new Button(server.strings.get(thisClass, "usermanagement"));
userAdmin.addActionListener(this);
p.add(
userAdmin,
new babylonConstraints(
1,
1,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0),
0,
0));
console = new Button(server.strings.get(thisClass, "adminclient"));
console.addActionListener(this);
p.add(
console,
new babylonConstraints(
1,
2,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0),
0,
0));
disconnect = new Button(server.strings.get(thisClass, "disconnectuser"));
disconnect.setEnabled(false);
disconnect.addActionListener(this);
p.add(
disconnect,
new babylonConstraints(
1,
3,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0),
0,
0));
disconnectAll = new Button(server.strings.get(thisClass, "disconnectall"));
disconnectAll.setEnabled(false);
disconnectAll.addActionListener(this);
p.add(
disconnectAll,
new babylonConstraints(
1,
4,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0),
0,
0));
shutdown = new Button(server.strings.get(thisClass, "shutdown"));
shutdown.addActionListener(this);
p.add(
shutdown,
new babylonConstraints(
1,
5,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.HORIZONTAL,
new Insets(0, 0, 0, 0),
0,
0));
stats =
new TextField(
server.strings.get(thisClass, "connectionscurrent")
+ " 0 "
+ server.strings.get(thisClass, "connectionspeak")
+ " 0 "
+ server.strings.get(thisClass, "connectionstotal")
+ " 0",
40);
stats.setEditable(false);
p.add(
stats,
new babylonConstraints(
0,
7,
2,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.BOTH,
new Insets(0, 0, 0, 0),
0,
0));
logWindow =
new TextArea(
server.strings.get(thisClass, "activitylog") + "\n",
10,
40,
TextArea.SCROLLBARS_VERTICAL_ONLY);
logWindow.setEditable(false);
p.add(
logWindow,
new babylonConstraints(
0,
8,
2,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.BOTH,
new Insets(0, 0, 5, 0),
0,
0));
canvas = new babylonPictureCanvas(this);
p.add(
canvas,
new babylonConstraints(
0,
9,
2,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.BOTH,
new Insets(0, 0, 0, 0),
0,
0));
add(
p,
new babylonConstraints(
0,
0,
1,
1,
1.0,
1.0,
GridBagConstraints.NORTHWEST,
GridBagConstraints.BOTH,
new Insets(5, 5, 5, 5),
0,
0));
try {
URL url = new URL("file", "localhost", "babylonPic.jpg");
Image image = getToolkit().getImage(url);
canvas.setimage(image);
} catch (Exception e) {
System.out.println(e);
}
try {
URL iconUrl = new URL("file", "localhost", "babylonIcon.jpg");
ImageIcon icon = new ImageIcon(iconUrl);
this.setIconImage(icon.getImage());
} catch (Exception e) {
/* Not important */
}
addWindowListener(this);
setSize(600, 600);
pack();
}
public void actionPerformed(ActionEvent e) {
Object source = e.getSource();
// Client pressed enter in the message entry field-send it
if (source == enterField) {
// Get the message
message = e.getActionCommand();
try {
// Encipher the message
if (message.length() > plaintextBlockSize)
message = message.substring(0, plaintextBlockSize);
byte[] ciphertext =
Ciphers.RSAEncipherWSalt(message.getBytes(), BigIntegerMath.THREE, recipModulus, sr);
// Send to the server
output.write(ciphertext);
output.flush();
// Display same message in client output area
displayArea.append("\n" + message);
enterField.setText("");
} catch (IOException ioe) {
displayArea.append("\nError writing message");
}
} else if (source == connectButton) {
if (connection != null) { // Already connected-button press now means disconnect
try {
// Send final message of 0
byte[] lastMsg = new byte[1];
lastMsg[0] = 0;
output.write(Ciphers.RSAEncipherWSalt(lastMsg, BigIntegerMath.THREE, recipModulus, sr));
output.flush();
// close connection and IO streams, change some components
closeAll();
} catch (IOException ioe) {
displayArea.append("\nError closing connection");
}
} else { // Not connected-connect
// Get name of server to connect to
chatServer = serverField.getText();
displayArea.setText("Attempting connection to " + chatServer);
try {
// Set up the socket
connection = new Socket(chatServer, 55555);
displayArea.append("\nConnected to: " + connection.getInetAddress().getHostName());
// Set up the IO streams
output = new DataOutputStream(connection.getOutputStream());
output.flush();
input = new DataInputStream(connection.getInputStream());
// Exchange public keys with the server-send yours, get theirs
exchangeKeys();
// Change appearance/functionality of some components
serverField.setEditable(false);
connectButton.setLabel("Disconnect from server above");
enterField.setEnabled(true);
// Set up a thread to listen for the connection
listener =
new Thread(
new Runnable() {
public void run() {
go();
}
});
listener.start();
} catch (IOException ioe) {
displayArea.append("\nError connecting to " + chatServer);
}
}
}
}
