def __connectToServer(self):
# Create the connection manager to manage all communcation to the server
self.connectionManager = ConnectionManager(self.nick, (self.turn, self.port), self.chatWindow.postMessage, self.chatWindow.newClient, self.chatWindow.clientReady, self.chatWindow.smpRequest, self.chatWindow.handleError)
self.chatWindow.connectionManager = self.connectionManager
# Start the connect thread
self.connectThread = qtThreads.QtServerConnectThread(self.connectionManager, self.__postConnect, self.__connectFailure)
self.connectThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Connecting to server...")
self.waitingDialog.show()
def __waitForClient(self):
# Start the accept thread
self.acceptThread = qtThreads.QtServerAcceptThread(self.server, self.crypto, self.__postAccept)
self.acceptThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Waiting for connection...", self.isLightTheme, self.__userClosedWaitingDialog, showIP=True)
self.waitingDialog.show()
def __connectToServer(self):
# Create the client object to use for the connection
self.client = Client(constants.MODE_CLIENT, (self.host, self.port), crypto=self.crypto)
# Start the connect thread
self.connectThread = qtThreads.QtServerConnectThread(self.client, self.__postConnect, self.__connectFailure)
self.connectThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Connecting to server...", self.isLightTheme, self.__userClosedWaitingDialog)
self.waitingDialog.show()
class QtUI(QApplication):
def __init__(self, argv, nick, turn, port):
QApplication.__init__(self, argv)
self.nick = nick
self.turn = turn
self.port = port
self.isEventLoopRunning = False
qtUtils.setIsLightTheme(self.palette().color(QPalette.Window))
self.aboutToQuit.connect(self.stop)
def start(self):
# Start a timer to allow for ctrl+c handling
self.timer = QTimer()
self.timer.start(500)
self.timer.timeout.connect(lambda: None)
# Show the login window and get the nick
nick = QLoginWindow.getNick(QWidget(), self.nick)
# If the nick is None, the user closed the window so we should quit the app
if nick is None:
qtUtils.exitApp()
else:
self.nick = str(nick)
# Show the chat window
self.chatWindow = QChatWindow(self.restart)
self.chatWindow.show()
self.__connectToServer()
# Don't start the event loop again if it's already running
if not self.isEventLoopRunning:
self.isEventLoopRunning = True
self.exec_()
def stop(self):
if hasattr(self, 'connectionManager'):
self.connectionManager.disconnectFromServer()
# Give the send thread time to get the disconnect messages out before exiting
# and killing the thread
time.sleep(.25)
self.quit()
def restart(self):
if hasattr(self, 'connectionManager'):
self.connectionManager.disconnectFromServer()
self.closeAllWindows()
if hasattr(self, 'chatWindow'):
del self.chatWindow
self.start()
def __connectToServer(self):
# Create the connection manager to manage all communcation to the server
self.connectionManager = ConnectionManager(self.nick, (self.turn, self.port), self.chatWindow.postMessage, self.chatWindow.newClient, self.chatWindow.clientReady, self.chatWindow.smpRequest, self.chatWindow.handleError)
self.chatWindow.connectionManager = self.connectionManager
# Start the connect thread
self.connectThread = qtThreads.QtServerConnectThread(self.connectionManager, self.__postConnect, self.__connectFailure)
self.connectThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Connecting to server...")
self.waitingDialog.show()
@pyqtSlot()
def __postConnect(self):
self.waitingDialog.close()
self.chatWindow.connectedToServer()
@pyqtSlot(str)
def __connectFailure(self, errorMessage):
# Show a more friendly error if the connection was refused (errno 111)
if errorMessage.contains('Errno 111'):
errorMessage = "Unable to contact the server. Try again later."
QMessageBox.critical(self.chatWindow, errors.FAILED_TO_CONNECT, errorMessage)
self.restart()
class QtUI(QApplication):
def __init__(self, argv, mode, port, host):
QApplication.__init__(self, argv)
self.mode = mode
self.port = port
self.host = host
self.isEventLoopRunning = False
self.connectedToClient = False
self.isLightTheme = qtUtils.isLightTheme(self.palette().color(QPalette.Window))
self.aboutToQuit.connect(self.stop)
def start(self):
self.timer = QTimer()
self.timer.start(500)
self.timer.timeout.connect(lambda: None)
# Show mode dialog if a mode wasn't given
if self.mode is None:
self.mode = QModeDialog.getMode(self.isLightTheme)
# If the user closed the mode dialog by not selected a mode, stop the app
if self.mode is None:
qtUtils.exitApp()
# Show the chat window
self.chatWindow = QChatWindow(None, None, self.isLightTheme)
self.chatWindow.show()
self.__loadOrGenerateKepair()
if self.mode == constants.MODE_SERVER:
self.__startServer()
self.__waitForClient()
elif self.mode == constants.MODE_CLIENT:
# Get the host if not given
if self.host is None:
self.host, ok = QInputDialog.getText(self.chatWindow, "Hostname", "Host:")
if not ok:
self.__restart()
return
self.__connectToServer()
if not self.isEventLoopRunning:
self.isEventLoopRunning = True
self.exec_()
def stop(self):
self.__endConnections()
self.quit()
def __restart(self):
self.__endConnections()
self.__restartHelper()
self.start()
def __endConnections(self):
if hasattr(self, 'acceptThread'):
self.acceptThread.quit()
elif hasattr(self, 'connectThread'):
self.connectThread.quit()
if hasattr(self, 'sendThread'):
self.sendThread.quit()
if hasattr(self, 'recvThread'):
self.recvThread.quit()
# If a client is connected, try to end the connection gracefully
if hasattr(self, 'client'):
self.client.disconnect()
if hasattr(self, 'server'):
self.server.stop()
def __restartHelper(self):
self.mode = None
self.host = None
self.closeAllWindows()
if hasattr(self, 'waitingDialog'):
del self.waitingDialog
if hasattr(self, 'chatWindow'):
del self.chatWindow
def __loadOrGenerateKepair(self):
self.crypto = Crypto()
if utils.doesSavedKeypairExist():
while(True):
passphrase = qtUtils.getKeypairPassphrase(self.isLightTheme)
# Restart the application if the user did not provide a passphrase
if passphrase is None:
self.__restart()
return
try:
utils.loadKeypair(self.crypto, passphrase)
break
except exceptions.CryptoError:
QMessageBox.warning(self.chatWindow, errors.BAD_PASSPHRASE, errors.BAD_PASSPHRASE_VERBOSE)
# We still need to generate an AES key
self.crypto.generateAESKey()
else:
self.crypto.generateKeys()
def __startServer(self):
try:
self.server = Server()
self.server.start(int(self.port))
except exceptions.NetworkError as ne:
QMessageBox.critical(self.chatWindow, errors.FAILED_TO_START_SERVER, errors.FAILED_TO_START_SERVER + ": " + str(ne))
self.__restart()
def __waitForClient(self):
# Start the accept thread
self.acceptThread = qtThreads.QtServerAcceptThread(self.server, self.crypto, self.__postAccept)
self.acceptThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Waiting for connection...", self.isLightTheme, self.__userClosedWaitingDialog, showIP=True)
self.waitingDialog.show()
def __connectToServer(self):
# Create the client object to use for the connection
self.client = Client(constants.MODE_CLIENT, (self.host, self.port), crypto=self.crypto)
# Start the connect thread
self.connectThread = qtThreads.QtServerConnectThread(self.client, self.__postConnect, self.__connectFailure)
self.connectThread.start()
# Show the waiting dialog
self.waitingDialog = QWaitingDialog(self.chatWindow, "Connecting to server...", self.isLightTheme, self.__userClosedWaitingDialog)
self.waitingDialog.show()
@pyqtSlot(Client)
def __postAccept(self, client):
self.connectedToClient = True
self.client = client
self.waitingDialog.close()
# Show the accept dialog
accept = QAcceptDialog.getAnswer(self.chatWindow, self.client.getHostname())
# If not accepted, disconnect and wait for a client again
if not accept:
self.client.disconnect()
self.__waitForClient()
return
# Do the handshake with the client
try:
client.doHandshake()
except exceptions.NetworkError as ne:
self.client.disconnect()
self.__waitForClient()
self.__startChat()
@pyqtSlot()
def __postConnect(self):
self.connectedToClient = True
self.waitingDialog.close()
self.__startChat()
@pyqtSlot(str)
def __connectFailure(self, errorMessage):
QMessageBox.critical(self.chatWindow, errors.FAILED_TO_CONNECT, errorMessage)
self.__restart()
@pyqtSlot()
def __userClosedWaitingDialog(self):
self.waitingDialog.hide()
# If the waiting dialog was closed before we connected to the client,
# it means that the user closed the dialog and we should restart the app
if not self.connectedToClient:
self.__restart()
def __startChat(self):
# Start the sending and receiving thread
self.recvThread = qtThreads.QtRecvThread(self.client, self.chatWindow.appendMessage, self.__threadError)
self.recvThread.start()
self.sendThread = qtThreads.QtSendThread(self.client, self.__threadError)
self.sendThread.start()
self.chatWindow.client = self.client
self.chatWindow.messageQueue = self.sendThread.messageQueue
self.chatWindow.showNowChattingMessage()
@pyqtSlot(str, str)
def __threadError(self, title, message):
QMessageBox.critical(self.chatWindow, title, message)
self.__restart()
