示例#1
0
class TCPServer(QObject):
    def __init__(self, port):
        QObject.__init__(self)

        # logging instance
        self.log = logging.getLogger('SMIGOL.TCPServer.{0}'.format(port))

        # TCP server to listen for control commands
        self.tcp_server = QTcpServer()

        # TCP server listenning port
        self.tcp_port = port

        # TCP socket connection
        self.tcp_connection = None

    def start(self):
        self.log.info("Starting TCP server...")
        if self.tcp_server.listen(port=self.tcp_port):
            txt = "Listening at http://localhost:{0} for a connection"
            self.log.info(txt.format(self.tcp_server.serverPort()))
            self.tcp_server.newConnection.connect(self._accept_connection)
        else:
            self.log.critical("Unable to start: {0}".format(
                self.tcp_server.errorString()))

    def disconnect(self):
        if self.tcp_connection and self.tcp_connection.state(
        ) == QTcpSocket.ConnectedState:
            loop = QEventLoop()
            self.tcp_connection.disconnected.connect(loop.quit)
            self.tcp_connection.disconnectFromHost()
            self.log.debug("Entering disconnect state...")
            if self.tcp_connection.state() == QTcpSocket.ConnectedState:
                loop.exec_()
            self.log.debug("Done waiting, closing server...")
        if self.tcp_server.isListening():
            self.tcp_server.close()
        self.log.info("Server closed")

    def _accept_connection(self):
        if not self.tcp_connection:
            self.tcp_connection = self.tcp_server.nextPendingConnection()
            self.tcp_connection.error.connect(self._error_occurred)

            txt = "Accepted connection"
            self.log.debug(txt.format(self.tcp_server.serverPort()))

        else:
            self.log.warning("Received a second connection, ignoring it...")
            self.tcp_server.nextPendingConnection()

    def _error_occurred(self, socket_error):
        if socket_error == QTcpSocket.RemoteHostClosedError:
            self.log.info(self.tcp_connection.errorString())
        else:
            self.log.error(self.tcp_connection.errorString())
class TunnelServer(object):
    """A server for tunnel instances."""

    def __init__(self, cookie):
        """Initialize this tunnel instance."""
        self.tunnels = []
        self.cookie = cookie
        self.server = QTcpServer(QCoreApplication.instance())
        self.server.newConnection.connect(self.new_connection)
        self.server.listen(QHostAddress.LocalHost, 0)
        logger.info("Starting tunnel server at port %d", self.port)

    def new_connection(self):
        """On a new connection create a new tunnel instance."""
        logger.info("New connection made")
        local_socket = self.server.nextPendingConnection()
        tunnel = Tunnel(local_socket, self.cookie)
        self.tunnels.append(tunnel)

    def shutdown(self):
        """Terminate every connection."""
        # TODO: handle this gracefully in an upcoming branch

    @property
    def port(self):
        """The port where this server listens."""
        return self.server.serverPort()
示例#3
0
class ServerApp(FreeseerApp):
    
    STATUS = ["Offline",
              "Online"]

    status = STATUS[0]
    clients = []
    passPhrase = ''
    ipAddress = None
    
    def __init__(self):
        FreeseerApp.__init__(self)
        self.resize(400, 300)
        
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap(_fromUtf8(":/freeseer/logo.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.setWindowIcon(icon)
        
        configdir = os.path.abspath(os.path.expanduser('~/.freeseer/'))
        self.logger = Logger(configdir)
        logging.info("Logger initialized")
        
        self.server = QTcpServer(self)
        logging.info("Starting Freeseer Server")
        
        # Setup Widget
        self.mainWidget = ControllerServerWidget()
        self.setCentralWidget(self.mainWidget)
        
        self.mainWidget.hostCombo.addItem(QtCore.QString("0.0.0.0"))
                
        #Connections
        self.connect(self.server, QtCore.SIGNAL('newConnection()'), self.acceptConnection)  
        self.connect(self.mainWidget.startButton, QtCore.SIGNAL('pressed()'), self.startServer)
        self.connect(self.mainWidget.hostCombo, QtCore.SIGNAL('currentIndexChanged(int)'), self.ipComboBoxHandler)
        self.connect(self.mainWidget.passEdit, QtCore.SIGNAL('textChanged(QString)'), self.onPassChanged)
        
        # Initialize Passphrase Field
        self.mainWidget.passEdit.setPlaceholderText("Passphrase required to start server")
        self.mainWidget.startButton.setEnabled(False)

        # Client Control
        self.connect(self.mainWidget.clientStartButton, QtCore.SIGNAL('pressed()'), self.sendRecordCommand)
        self.connect(self.mainWidget.clientStopButton, QtCore.SIGNAL('pressed()'), self.sendStopCommand)
        self.connect(self.mainWidget.clientDisconnectButton, QtCore.SIGNAL('pressed()'), self.disconnectClients)
        self.connect(self.mainWidget.clientList, QtCore.SIGNAL('itemSelectionChanged()'), self.updateClientButtons)
    
        self.load_settings()
        self.updateStatus(self.status)
        
    ###
    ### Translation Related
    ###
    def retranslate(self):
        self.setWindowTitle(self.uiTranslator.translate("ControllerServerApp", "Controller Server"))
        
        #
        # Reusuable Strings
        #
        self.serverStatusString = self.uiTranslator.translate("ControllerServerApp", "Server status")
        self.startServerString = self.uiTranslator.translate("ControllerServerApp", "Start Server")
        self.stopServerString = self.uiTranslator.translate("ControllerServerApp", "Stop Server")
        self.startRecordingString = self.uiTranslator.translate("ControllerServerApp", "Start Recording")
        self.stopRecordingString = self.uiTranslator.translate("ControllerServerApp", "Stop Recording")
        self.pauseRecordingString = self.uiTranslator.translate("ControllerServerApp", "Pause Recording")
        self.resumeRecordingString = self.uiTranslator.translate("ControllerServerApp", "Resume Recording")
        # --- End Reusable Strings
        
        #
        # Server Settings
        #
        self.mainWidget.toolBox.setItemText(0, self.uiTranslator.translate("ControllerServerApp", "Server Settings"))
        self.mainWidget.hostLabel.setText(self.uiTranslator.translate("ControllerServerApp", "IP Address"))
        self.mainWidget.portLabel.setText(self.uiTranslator.translate("ControllerServerApp", "Port"))
        self.mainWidget.passLabel.setText(self.uiTranslator.translate("ControllerServerApp", "Passphrase"))
        
        # Button
        if self.status == self.STATUS[0]:
            self.mainWidget.startButton.setText(self.startServerString)
        else:
            self.mainWidget.startButton.setText(self.stopServerString)
        # --- End Server Settings
        
        #
        # Control Clients
        #
        self.mainWidget.toolBox.setItemText(1, self.uiTranslator.translate("ControllerServerApp", "Control Clients"))
        self.updateClientButtons()
        self.mainWidget.clientDisconnectButton.setText(self.uiTranslator.translate("ControllerServerApp", "Disconnect"))
        # --- End Control Clients
        
    ###
    ### Server Methods
    ###
    def load_settings(self): 
        logging.info('Loading settings...')
        configdir = os.path.abspath(os.path.expanduser('~/.freeseer/'))
        self.config = Config(configdir)
        
        # Load default language.
        actions = self.menuLanguage.actions()
        for action in actions:
            if action.data().toString() == self.config.default_language:
                action.setChecked(True)
                self.translate(action)
                break
    
    def startServer(self):    
        if self.status == self.STATUS[0]:   # Check if status is Offline
            if self.ipAddress is None:
                self.ipAddress = QHostAddress(self.mainWidget.hostCombo.currentText())
            self.server.listen(self.ipAddress, PORT)    
            self.status = self.STATUS[1]    # Set Running            
            self.mainWidget.hostCombo.setEnabled(False)
            logging.info("Started server %s: %s", self.server.serverAddress().toString(), str(self.server.serverPort()))
            
        elif self.status == self.STATUS[1]:      # Check if status is Online
            self.server.close()
            self.status = self.STATUS[0]         # Set status Offline
            self.disconnectAllClients()
            self.mainWidget.hostCombo.setEnabled(True)
            self.ipAddress = None
            
        self.updateStatus(self.status)
        self.setPassPhrase()
        self.setConnectionLabel()
        self.retranslate()
        
    def updateStatus(self, status):
        self.mainWidget.statusLabel.setText("%s: %s" % (self.serverStatusString, status))
        
    def setConnectionLabel(self):
        text = "%s:%s" % (self.mainWidget.hostCombo.currentText(),
                          self.mainWidget.portEdit.text())
        self.mainWidget.settingsEdit.setText(text)

        if self.mainWidget.passEdit.text():
            self.mainWidget.settingsEdit.setText("%s@%s" % (self.mainWidget.passEdit.text(),
                                                            text))
        
    '''
    This function is for changing the passphrase. It saves the new passphrase in the self.passPhrase after encoding it.
    '''
    def setPassPhrase(self):
        self.passphrase = self.mainWidget.passEdit.text()
        logging.info ("Passphrase set to %s", self.passphrase)
        #self.passPhrase = base64.b64encode(self.passPhrase)
        self.passphrase = str(self.passphrase)
        self.passphrase = pwd_context.encrypt(self.passphrase)
        
    '''
    This function reads the passphrase sent from the client. It decodes the saved passphrase and the one that client sent and compares.
    Client is accepted if the passphrases match. Otherwise client is rejected
    '''  
    def readPassPhrase(self):
        client = QtCore.QObject.sender(self)
        message = client.read(client.bytesAvailable())   
        logging.info("Client said: %s", message)
        if pwd_context.verify(message, self.passphrase) is False:
            client.disconnectFromHost()
            logging.info("Client rejected")
        else:
            self.clients.append(client)
            self.updateList()
            logging.info("Client accepted")
            self.disconnect(client, QtCore.SIGNAL('readyRead()'), self.readPassPhrase)
            self.connect(client, QtCore.SIGNAL('readyRead()'), self.startRead)
    
    def onPassChanged(self):
        """Disable 'Start' button only when the passphrase field is empty."""
        if self.mainWidget.passEdit.text():
            self.mainWidget.startButton.setEnabled(True)
        else:
            self.mainWidget.startButton.setEnabled(False)
            
    def ipComboBoxHandler(self):
        self.ipAddress = QHostAddress(self.ipComboBox.itemText(self.ipComboBox.currentIndex()))
        logging.info("Server IP changed to: %s", self.ipAddress.toString())
    
    ###
    ### Messaging
    ###
    
    def startRead(self):
        client = QtCore.QObject.sender(self)
        message = client.read(client.bytesAvailable())   
        logging.info("Client said: %s", message)
        return message
    
    def sendMessage(self, client, message):
        block = QtCore.QByteArray()
        block.append(message)
        client.write(block)
            
    ###
    ### Client List Methods
    ###
            
    '''
    This is the function to handle a new connection.
    '''
    def acceptConnection(self):
        client = self.server.nextPendingConnection()
        self.connect(client, QtCore.SIGNAL("disconnected()"), self.clientDisconnected)
        self.connect(client, QtCore.SIGNAL('readyRead()'), self.readPassPhrase)
    
    def clientDisconnected(self):
        client = QtCore.QObject.sender(self)
        logging.info("Client disconnected")
        self.clients.remove(client)
        self.updateList()
        self.updateClientButtons()
    
    '''
    This method is to update the list
    '''
    def updateList(self):
        self.mainWidget.clientList.clear()
        for i in range(0, len(self.clients)):
            client = self.clients[i]
            listItem = ClientListItem(client)
            self.mainWidget.clientList.addItem(listItem)
            clientLabel = QtGui.QLabel('F1', self)
            clientLabel.move(5 + (i * 20), 150)
    
    def addClientToList(self, client):
        self.clients.append(object)
        listItem = ClientListItem(client)
        self.mainWidget.clientList.addItem(listItem)
    
    def removeClientFromTheList(self, client):
        self.clients.remove(client)
        self.updateList()

    '''
    Sends a record command to the selected clients
    '''     
    def sendRecordCommand (self):
        buttonText = self.mainWidget.clientStartButton.text()
        
        # Find out what command to send
        if buttonText == self.startRecordingString or buttonText == self.resumeRecordingString:
            command = COMMANDS[1]   # Set Record
        elif buttonText == self.pauseRecordingString:
            command = COMMANDS[2]   # Set Pause
        
        # Send command
        for i in range(0, len(self.mainWidget.clientList.selectedItems())):
            c_item = self.mainWidget.clientList.selectedItems()[i]
            client = c_item.client
            self.sendMessage(client, command)
            
            if command == COMMANDS[1]:                # Check if command is Record
                c_item.changeStatus(CLIENT_STATUS[1]) # Set Recording
            elif command == COMMANDS[2]:              # Check if command is Pause
                c_item.changeStatus(CLIENT_STATUS[2]) # Set Paused
                
            logging.info("Sent  %s  command to %s" % (command, c_item.address))
                
        self.updateClientButtons()
    
    '''
    Sends a stop command to selected clients
    '''
    def sendStopCommand (self):
        command = COMMANDS[0]   # Set Stop command
        
        for i in range(0, len(self.mainWidget.clientList.selectedItems())):
            c_item = self.mainWidget.clientList.selectedItems()[i]
            client = c_item.client
            self.sendMessage(client, command)
            c_item.changeStatus(CLIENT_STATUS[3])  # Set Idle
            
            logging.info("Sent  %s  command to %s" % (command, c_item.address))
            
        self.updateClientButtons()
        
    '''
    Method to disconnect all clients selected from the list
    '''
    def disconnectClients(self):
        for i in range(0, len(self.mainWidget.clientList.selectedItems())):
            client = self.mainWidget.clientList.selectedItems()[i].client
            client.disconnectFromHost()  
    
    '''
    Method to disconnect all clients that are connected
    '''
    def disconnectAllClients(self):
        for i in range(0, self.mainWidget.clientList.count()):
            client = self.mainWidget.clientList.item(i).client
            client.disconnectFromHost()
            
    def updateClientButtons(self):
        if len(self.mainWidget.clientList.selectedItems()) > 0:
            self.mainWidget.clientDisconnectButton.setEnabled(True)
            self.mainWidget.clientStartButton.setEnabled(True)
            
            for i in range(0, len(self.mainWidget.clientList.selectedItems())):
                clientStatus = self.mainWidget.clientList.selectedItems()[i].status
                logging.debug("Client status: %s", clientStatus)
                
                if clientStatus == CLIENT_STATUS[1]:    # Client is Recording
                    self.mainWidget.clientStartButton.setText(self.pauseRecordingString)
                    self.mainWidget.clientStopButton.setEnabled(True)
                    
                elif clientStatus == CLIENT_STATUS[3]:  # Client is Idle
                    self.mainWidget.clientStartButton.setText(self.startRecordingString)
                    self.mainWidget.clientStopButton.setEnabled(False)
                    
                elif clientStatus == CLIENT_STATUS[2]:  # Client is Paused
                    self.mainWidget.clientStartButton.setText(self.resumeRecordingString)
                    self.mainWidget.clientStopButton.setEnabled(True)
                    
        else:
            self.mainWidget.clientDisconnectButton.setEnabled(False)
            self.mainWidget.clientStartButton.setEnabled(False)
            self.mainWidget.clientStartButton.setText(self.startRecordingString)
            self.mainWidget.clientStopButton.setEnabled(False) 
            self.mainWidget.clientStopButton.setText(self.stopRecordingString)
示例#4
0
class HTTPProxy(QObject):

    debug = True
    log = sys.stderr
    username = '******'
    password = '******'
    stopServing = pyqtSlot()

    def __init__(self, parent=None):
        super(HTTPProxy, self).__init__(parent)
        self.proxy_server = QTcpServer(self)
        self.proxy_server.listen(QHostAddress.Any, 8000)
        self.proxy_server.newConnection.connect(self.manage_request)

        if self.debug:
            self.log.write('Proxy server running on 0.0.0.0 port %s\n\n' %
                           self.port())

    def port(self):
        return self.proxy_server.serverPort()

    def addr(self):
        return self.proxy_server.serverAddress().toString()

    def stopServing(self):
        if self.debug:
            self.log.write('Service is stopping...\n\n')

        # does not "close" the server, just stop listening...
        self.proxy_server.close()

        if self.proxy_server.hasPendingConnections():
            socket = self.proxy_server.nextPendingConnection()
            while socket:
                socket.abort()
                socket = self.proxy_server.nextPendingConnection()

    def manage_request(self):
        proxy_server = self.sender()
        # Qt docs says that the caller of nextPendingConnection()
        # is the parent of the socket
        socket = proxy_server.nextPendingConnection()
        socket.readyRead.connect(self.process_request)
        socket.disconnected.connect(socket.deleteLater)

    def authorize_request(self, request_data):
        return True
        header = QHttpRequestHeader(QString(request_data))
        if self.debug:
            self.log.write(header.toString())

        auth = header.value('Proxy-Authorization')
        if not auth:
            return False

        challenge = base64.b64encode(self.username + ':' + self.password)
        return challenge == str(auth).split()[1]

    def process_request(self):
        socket = self.sender()
        request_data = socket.readAll()

        if not self.authorize_request(request_data):
            socket.write('HTTP/1.1 407 Proxy Authentication Required\r\n')
            if self.debug:
                self.log.write('407 Proxy Authentication Required\n\n')
            socket.write('Proxy-Authenticate: Basic realm="test"\r\n')
            socket.write('\r\n')
            socket.disconnectFromHost()
            return
        else:
            # remove Proxy-Authorization header
            start = request_data.indexOf('Proxy-Authorization:')
            end = request_data.lastIndexOf('\r\n')
            request_data.remove(start, end)
            request_data.append('\r\n')

        pos = request_data.indexOf('\r\n')
        request_line = request_data.left(pos)
        request_data.remove(0, pos + 2)

        entries = request_line.split(' ')
        method = entries[0]
        address = entries[1]
        version = entries[2]
        port = '80'

        if address.count(':') > 1:
            protocol, host, port = address.split(':')
        else:
            protocol, host = address.split(':')

        print 'address', address

        #url = QUrl( protocol + host )
        url = QUrl.fromEncoded(address)
        #url.setHost( host )
        #url.setPort( int(port) )

        if not url.isValid():
            if self.debug:
                self.log.write('Invalid URL: %s\n\n', url)
            socket.disconnectFromHost()
            return

        host = url.host()
        port = 80 if (url.port() < 0) else url.port()
        req = url.encodedPath()
        if url.hasQuery():
            req.append('?').append(url.encodedQuery())
        request_line = method + ' ' + req + ' ' + version + '\r\n'
        request_data.prepend(request_line)

        if self.debug:
            self.log.write(method + ' ' + address + ' ' + version + '\n\n')

        key = host + ':' + QString.number(port)
        proxy_socket = socket.findChild(QTcpSocket, key)
        if proxy_socket:
            proxy_socket.setObjectName(key)
            proxy_socket.setProperty('url', url)
            proxy_socket.setProperty('request_data', request_data)
            proxy_socket.write(request_data)
        else:
            proxy_socket = QTcpSocket(socket)
            proxy_socket.setObjectName(key)
            proxy_socket.setProperty('url', url)
            proxy_socket.setProperty('request_data', request_data)
            proxy_socket.connected.connect(self.send_request)
            proxy_socket.readyRead.connect(self.transfer_data)
            proxy_socket.disconnected.connect(self.close_connection)
            proxy_socket.error.connect(self.close_connection)
            proxy_socket.connectToHost(host, port)

    def send_request(self):
        proxy_socket = self.sender()
        request_data = proxy_socket.property('request_data').toByteArray()
        proxy_socket.write(request_data)

    def transfer_data(self):
        proxy_socket = self.sender()
        socket = proxy_socket.parent()
        socket.write(proxy_socket.readAll())

    def close_connection(self):
        proxy_socket = self.sender()
        if proxy_socket:
            socket = proxy_socket.parent()
            if isinstance(socket, QTcpSocket) and socket:
                socket.disconnectFromHost()
            if proxy_socket.error() != QTcpSocket.RemoteHostClosedError:
                url = proxy_socket.property('url').toUrl()
                error_string = proxy_socket.errorString()

                if self.debug:
                    self.log.write('Error for %s %s\n\n' % (url, error_string))

            proxy_socket.deleteLater()
示例#5
0
class RunManager( QObject ):
    " Manages the external running processes "

    def __init__( self, mainWindow ):
        QObject.__init__( self )
        self.__mainWindow = mainWindow
        self.__processes = []

        self.__tcpServer = QTcpServer()
        self.connect( self.__tcpServer, SIGNAL( "newConnection()" ),
                      self.__newConnection )
        self.__tcpServer.listen( QHostAddress.LocalHost )

        self.__waitTimer = QTimer( self )
        self.__waitTimer.setSingleShot( True )
        self.connect( self.__waitTimer, SIGNAL( 'timeout()' ),
                      self.__onWaitImer )
        return

    def __newConnection( self ):
        " Handles new incoming connections "
        clientSocket = self.__tcpServer.nextPendingConnection()
        clientSocket.setSocketOption( QAbstractSocket.KeepAliveOption, 1 )
        clientSocket.setSocketOption( QAbstractSocket.LowDelayOption, 1 )
        QApplication.setOverrideCursor( QCursor( Qt.WaitCursor ) )
        self.__waitForHandshake( clientSocket )
        QApplication.restoreOverrideCursor()
        return

    def __waitForHandshake( self, clientSocket ):
        " Waits for the message with the proc ID "
        if clientSocket.waitForReadyRead( 1000 ):
            qs = clientSocket.readAll()
            us = str( CODEC.fromUnicode( str( qs ) ) )
            if not us.endswith( EOT ):
                return

            line = us[ 0 : -len( EOT ) ]
            if not line.startswith( '>' ):
                return

            cmdIndex = line.find( '<' )
            if cmdIndex == -1:
                return

            cmd = line[ 0 : cmdIndex + 1 ]
            content = line[ cmdIndex + 1 : ]
            if cmd != ResponseProcID:
                return

            # It could only be a redirected process
            procID = int( content )
            procIndex = self.__getProcessIndex( procID )
            if procIndex is not None:
                self.__onProcessStarted( procID )
                self.__processes[ procIndex ].procWrapper.setSocket(
                                                            clientSocket )
        return

    def run( self, path, needDialog ):
        " Runs the given script with redirected IO "
        if needDialog:
            params = GlobalData().getRunParameters( path )
            termType = Settings().terminalType
            profilerParams = Settings().getProfilerSettings()
            debuggerParams = Settings().getDebuggerSettings()
            dlg = RunDialog( path, params, termType,
                             profilerParams, debuggerParams, "Run" )
            if dlg.exec_() != QDialog.Accepted:
                return
            GlobalData().addRunParams( path, dlg.runParams )
            if dlg.termType != termType:
                Settings().terminalType = dlg.termType

        # The parameters for the run are ready.
        # Start the run business.
        remoteProc = RemoteProcess()
        remoteProc.isProfiling = False
        remoteProc.procWrapper = RemoteProcessWrapper( path,
                                        self.__tcpServer.serverPort() )
        if Settings().terminalType == TERM_REDIRECT:
            remoteProc.widget = RunConsoleTabWidget(
                                        remoteProc.procWrapper.procID() )
            self.connect( remoteProc.procWrapper, SIGNAL( 'ClientStdout' ),
                          remoteProc.widget.appendStdoutMessage )
            self.connect( remoteProc.procWrapper, SIGNAL( 'ClientStderr' ),
                          remoteProc.widget.appendStderrMessage )
            self.connect( remoteProc.procWrapper, SIGNAL( 'ClientRawInput' ),
                          remoteProc.widget.rawInput )
            self.connect( remoteProc.widget, SIGNAL( 'UserInput' ),
                          self.__onUserInput )
        else:
            remoteProc.widget = None

        self.connect( remoteProc.procWrapper, SIGNAL( 'Finished' ),
                      self.__onProcessFinished )
        self.__processes.append( remoteProc )
        if remoteProc.procWrapper.start() == False:
            # Failed to start - the fact is logged, just remove from the list
            procIndex = self.__getProcessIndex( remoteProc.procWrapper.procID() )
            if procIndex is not None:
                del self.__processes[ procIndex ]
        else:
            if Settings().terminalType != TERM_REDIRECT:
                if not self.__waitTimer.isActive():
                    self.__waitTimer.start( 1000 )
        return

    def profile( self, path ):
        " Profiles the given script with redirected IO "
        return

    def killAll( self ):
        " Kills all the processes if needed "
        index = len( self.__processes ) - 1
        while index >= 0:
            item = self.__processes[ index ]
            if item.procWrapper.needRedirection():
                item.procWrapper.stop()
            index -= 1

        # Wait till all the processes stopped
        count = self.__getDetachedCount()
        while count > 0:
            time.sleep( 0.01 )
            QApplication.processEvents()
            count = self.__getDetachedCount()
        return

    def __getDetachedCount( self ):
        " Return the number of detached processes still running "
        count = 0
        index = len( self.__processes ) - 1
        while index >= 0:
            if self.__processes[ index ].procWrapper.needRedirection():
                count += 1
            index -= 1
        return count

    def kill( self, procID ):
        " Kills a single process "
        index = self.__getProcessIndex( procID )
        if index is None:
            return
        item = self.__processes[ index ]
        if not item.procWrapper.needRedirection():
            return

        item.procWrapper.stop()
        return

    def __getProcessIndex( self, procID ):
        " Returns a process index in the list "
        for index, item in enumerate( self.__processes ):
            if item.procWrapper.procID() == procID:
                return index
        return None

    def __onProcessFinished( self, procID, retCode ):
        " Triggered when a process has finished "
        index = self.__getProcessIndex( procID )
        if index is not None:
            item = self.__processes[ index ]
            if item.procWrapper.needRedirection():
                if item.widget:
                    item.widget.scriptFinished()
                    if retCode == KILLED:
                        msg  = "Script killed"
                        tooltip = "killed"
                    elif retCode == DISCONNECTED:
                        msg = "Connection lost to the script process"
                        tooltip = "connection lost"
                    else:
                        msg = "Script finished with exit code " + str( retCode )
                        tooltip = "finished, exit code " + str( retCode )
                        item.procWrapper.wait()
                    item.widget.appendIDEMessage( msg )
                    self.__mainWindow.updateIOConsoleTooltip( procID, tooltip )
            del self.__processes[ index ]
        return

    def __onProcessStarted( self, procID ):
        " Triggered when a process has started "
        index = self.__getProcessIndex( procID )
        if index is not None:
            item = self.__processes[ index ]
            if item.widget:
                self.__mainWindow.installIOConsole( item.widget )
                item.widget.appendIDEMessage( "Script " +
                                              item.procWrapper.path() +
                                              " started" )
        return

    def __onUserInput( self, procID, userInput ):
        " Triggered when the user input is collected "
        index = self.__getProcessIndex( procID )
        if index is not None:
            item = self.__processes[ index ]
            if item.procWrapper.needRedirection():
                item.procWrapper.userInput( userInput )
        return

    def __onWaitImer( self ):
        " Triggered when the timer fired "
        needNewTimer = False
        index = len( self.__processes ) - 1
        while index >= 0:
            item = self.__processes[ index ]
            if item.procWrapper.needRedirection() == False:
                if item.procWrapper.waitDetached() == True:
                    del self.__processes[ index ]
                else:
                    needNewTimer = True
            index -= 1
        if needNewTimer:
            self.__waitTimer.start( 1000 )
        return
示例#6
0
class RunManager(QObject):
    " Manages the external running processes "

    def __init__(self, mainWindow):
        QObject.__init__(self)
        self.__mainWindow = mainWindow
        self.__processes = []

        self.__tcpServer = QTcpServer()
        self.connect(self.__tcpServer, SIGNAL("newConnection()"),
                     self.__newConnection)
        self.__tcpServer.listen(QHostAddress.LocalHost)

        self.__waitTimer = QTimer(self)
        self.__waitTimer.setSingleShot(True)
        self.connect(self.__waitTimer, SIGNAL('timeout()'), self.__onWaitImer)
        return

    def __newConnection(self):
        " Handles new incoming connections "
        clientSocket = self.__tcpServer.nextPendingConnection()
        clientSocket.setSocketOption(QAbstractSocket.KeepAliveOption, 1)
        clientSocket.setSocketOption(QAbstractSocket.LowDelayOption, 1)
        QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
        self.__waitForHandshake(clientSocket)
        QApplication.restoreOverrideCursor()
        return

    def __waitForHandshake(self, clientSocket):
        " Waits for the message with the proc ID "
        if clientSocket.waitForReadyRead(1000):
            qs = clientSocket.readAll()
            us = str(CODEC.fromUnicode(str(qs)))
            if not us.endswith(EOT):
                return

            line = us[0:-len(EOT)]
            if not line.startswith('>'):
                return

            cmdIndex = line.find('<')
            if cmdIndex == -1:
                return

            cmd = line[0:cmdIndex + 1]
            content = line[cmdIndex + 1:]
            if cmd != ResponseProcID:
                return

            # It could only be a redirected process
            procID = int(content)
            procIndex = self.__getProcessIndex(procID)
            if procIndex is not None:
                self.__onProcessStarted(procID)
                self.__processes[procIndex].procWrapper.setSocket(clientSocket)
        return

    def run(self, path, needDialog):
        " Runs the given script with redirected IO "
        if needDialog:
            params = GlobalData().getRunParameters(path)
            termType = Settings().terminalType
            profilerParams = Settings().getProfilerSettings()
            debuggerParams = Settings().getDebuggerSettings()
            dlg = RunDialog(path, params, termType, profilerParams,
                            debuggerParams, "Run", self.__mainWindow)
            if dlg.exec_() != QDialog.Accepted:
                return
            GlobalData().addRunParams(path, dlg.runParams)
            if dlg.termType != termType:
                Settings().terminalType = dlg.termType

        # The parameters for the run are ready.
        # Start the run business.
        remoteProc = RemoteProcess()
        remoteProc.isProfiling = False
        remoteProc.procWrapper = RemoteProcessWrapper(
            path, self.__tcpServer.serverPort())
        if Settings().terminalType == TERM_REDIRECT:
            remoteProc.widget = RunConsoleTabWidget(
                remoteProc.procWrapper.procID())
            self.connect(remoteProc.procWrapper, SIGNAL('ClientStdout'),
                         remoteProc.widget.appendStdoutMessage)
            self.connect(remoteProc.procWrapper, SIGNAL('ClientStderr'),
                         remoteProc.widget.appendStderrMessage)
            self.connect(remoteProc.procWrapper, SIGNAL('ClientRawInput'),
                         remoteProc.widget.rawInput)
            self.connect(remoteProc.widget, SIGNAL('UserInput'),
                         self.__onUserInput)
        else:
            remoteProc.widget = None

        self.connect(remoteProc.procWrapper, SIGNAL('Finished'),
                     self.__onProcessFinished)
        self.__processes.append(remoteProc)
        if remoteProc.procWrapper.start() == False:
            # Failed to start - the fact is logged, just remove from the list
            procIndex = self.__getProcessIndex(remoteProc.procWrapper.procID())
            if procIndex is not None:
                del self.__processes[procIndex]
        else:
            if Settings().terminalType != TERM_REDIRECT:
                if not self.__waitTimer.isActive():
                    self.__waitTimer.start(1000)
        return

    def profile(self, path):
        " Profiles the given script with redirected IO "
        return

    def killAll(self):
        " Kills all the processes if needed "
        index = len(self.__processes) - 1
        while index >= 0:
            item = self.__processes[index]
            if item.procWrapper.needRedirection():
                item.procWrapper.stop()
            index -= 1

        # Wait till all the processes stopped
        count = self.__getDetachedCount()
        while count > 0:
            time.sleep(0.01)
            QApplication.processEvents()
            count = self.__getDetachedCount()
        return

    def __getDetachedCount(self):
        " Return the number of detached processes still running "
        count = 0
        index = len(self.__processes) - 1
        while index >= 0:
            if self.__processes[index].procWrapper.needRedirection():
                count += 1
            index -= 1
        return count

    def kill(self, procID):
        " Kills a single process "
        index = self.__getProcessIndex(procID)
        if index is None:
            return
        item = self.__processes[index]
        if not item.procWrapper.needRedirection():
            return

        item.procWrapper.stop()
        return

    def __getProcessIndex(self, procID):
        " Returns a process index in the list "
        for index, item in enumerate(self.__processes):
            if item.procWrapper.procID() == procID:
                return index
        return None

    def __onProcessFinished(self, procID, retCode):
        " Triggered when a process has finished "
        index = self.__getProcessIndex(procID)
        if index is not None:
            item = self.__processes[index]
            if item.procWrapper.needRedirection():
                if item.widget:
                    item.widget.scriptFinished()
                    if retCode == KILLED:
                        msg = "Script killed"
                        tooltip = "killed"
                    elif retCode == DISCONNECTED:
                        msg = "Connection lost to the script process"
                        tooltip = "connection lost"
                    else:
                        msg = "Script finished with exit code " + str(retCode)
                        tooltip = "finished, exit code " + str(retCode)
                        item.procWrapper.wait()
                    item.widget.appendIDEMessage(msg)
                    self.__mainWindow.updateIOConsoleTooltip(procID, tooltip)
            del self.__processes[index]
        return

    def __onProcessStarted(self, procID):
        " Triggered when a process has started "
        index = self.__getProcessIndex(procID)
        if index is not None:
            item = self.__processes[index]
            if item.widget:
                self.__mainWindow.installIOConsole(item.widget)
                item.widget.appendIDEMessage("Script " +
                                             item.procWrapper.path() +
                                             " started")
        return

    def __onUserInput(self, procID, userInput):
        " Triggered when the user input is collected "
        index = self.__getProcessIndex(procID)
        if index is not None:
            item = self.__processes[index]
            if item.procWrapper.needRedirection():
                item.procWrapper.userInput(userInput)
        return

    def __onWaitImer(self):
        " Triggered when the timer fired "
        needNewTimer = False
        index = len(self.__processes) - 1
        while index >= 0:
            item = self.__processes[index]
            if item.procWrapper.needRedirection() == False:
                if item.procWrapper.waitDetached() == True:
                    del self.__processes[index]
                else:
                    needNewTimer = True
            index -= 1
        if needNewTimer:
            self.__waitTimer.start(1000)
        return
示例#7
0
class GameSession(QObject):
    ready = pyqtSignal()

    def __init__(self, client, connectivity):
        QObject.__init__(self)
        self._state = GameSessionState.OFF

        # Subscribe to messages targeted at 'game' from the server
        client.subscribe_to('game', self)

        # Connectivity helper
        self.connectivity = connectivity
        self.connectivity.ready.connect(self.ready.emit)
        self.connectivity.peer_bound.connect(self._peer_bound)

        # Keep a parent pointer so we can use it to send
        # relay messages about the game state
        self._client = client  # type: Client
        self.me = client.me

        self.game_port = client.gamePort
        self.player = client.me

        # Use the normal lobby by default
        self.init_mode = 0
        self._joins, self._connects = [], []

        # 'GPGNet' TCP listener
        self._game_listener = QTcpServer(self)
        self._game_listener.newConnection.connect(self._new_game_connection)
        self._game_listener.listen(QHostAddress.LocalHost)

        # We only allow one game connection at a time
        self._game_connection = None

        self._process = game_process_instance  # type: GameProcess
        self._process.started.connect(self._launched)
        self._process.finished.connect(self._exited)

    @property
    def relay_port(self):
        return self._game_listener.serverPort()

    @property
    def state(self):
        return self._state

    @state.setter
    def state(self, val):
        self._state = val

    def listen(self):
        """
        Start listening for remote commands

        Call this in good time before hosting a game,
        e.g. when the host game dialog is being shown.
        """
        assert self.state == GameSessionState.OFF
        self.state = GameSessionState.LISTENING
        if self.connectivity.is_ready:
            self.ready.emit()
        else:
            self.connectivity.prepare()

    def handle_message(self, message):
        command, args = message.get('command'), message.get('args', [])
        if command == 'SendNatPacket':
            addr_and_port, message = args
            host, port = addr_and_port.split(':')
            self.connectivity.send(message, (host, port))
        elif command == 'CreatePermission':
            addr_and_port = args[0]
            host, port = addr_and_port.split(':')
            self.connectivity.permit((host, port))
        elif command == 'JoinGame':
            addr, login, peer_id = args
            self._joins.append(peer_id)
            self.connectivity.bind(addr, login, peer_id)
        elif command == 'ConnectToPeer':
            addr, login, peer_id = args
            self._connects.append(peer_id)
            self.connectivity.bind(addr, login, peer_id)
        else:
            self._game_connection.send(command, *args)

    def send(self, command_id, args):
        self._logger.info("Outgoing relay message {} {}".format(command_id, args))
        self._client.send({
            'command': command_id,
            'target': 'game',
            'args': args or []
        })

    def _peer_bound(self, login, peer_id, port):
        self._logger.info("Bound peer {}/{} to {}".format(login, peer_id, port))
        if peer_id in self._connects:
            self._game_connection.send('ConnectToPeer', '127.0.0.1:{}'.format(port), login, peer_id)
            self._connects.remove(peer_id)
        elif peer_id in self._joins:
            self._game_connection.send('JoinGame', '127.0.0.1:{}'.format(port), login, peer_id)
            self._joins.remove(peer_id)

    def _new_game_connection(self):
        self._logger.info("Game connected through GPGNet")
        assert not self._game_connection
        self._game_connection = GPGNetConnection(self._game_listener.nextPendingConnection())
        self._game_connection.messageReceived.connect(self._on_game_message)
        self.state = GameSessionState.RUNNING

    def _on_game_message(self, command, args):
        self._logger.info("Incoming GPGNet: {} {}".format(command, args))
        if command == "GameState":
            if args[0] == 'Idle':
                # autolobby, port, nickname, uid, hasSupcom
                self._game_connection.send("CreateLobby",
                                           self.init_mode,
                                           self.game_port + 1,
                                           self.me.login,
                                           self.me.id,
                                           1)
            elif args[0] == 'Lobby':
                # TODO: Eagerly initialize the game by hosting/joining early
                pass
        self.send(command, args)

    def _turn_state_changed(self, val):
        if val == TURNState.BOUND:
            self.ready.emit()

    def _launched(self):
        self._logger.info("Game has started")

    def _exited(self, status):
        self._game_connection = None
        self.state = GameSessionState.OFF
        self._logger.info("Game has exited with status code: {}".format(status))
        self.send('GameState', ['Ended'])
示例#8
0
class GameSession(QObject):
    ready = pyqtSignal()

    def __init__(self, client, connectivity):
        QObject.__init__(self)
        self._state = GameSessionState.OFF

        # Subscribe to messages targeted at 'game' from the server
        client.subscribe_to('game', self)

        # Connectivity helper
        self.connectivity = connectivity
        self.connectivity.ready.connect(self.ready.emit)
        self.connectivity.peer_bound.connect(self._peer_bound)

        # Keep a parent pointer so we can use it to send
        # relay messages about the game state
        self._client = client  # type: Client
        self.me = client.me

        self.game_port = client.gamePort
        self.player = client.me

        # Use the normal lobby by default
        self.init_mode = 0
        self._joins, self._connects = [], []

        # 'GPGNet' TCP listener
        self._game_listener = QTcpServer(self)
        self._game_listener.newConnection.connect(self._new_game_connection)
        self._game_listener.listen(QHostAddress.LocalHost)

        # We only allow one game connection at a time
        self._game_connection = None

        self._process = game_process_instance  # type: GameProcess
        self._process.started.connect(self._launched)
        self._process.finished.connect(self._exited)

    @property
    def relay_port(self):
        return self._game_listener.serverPort()

    @property
    def state(self):
        return self._state

    @state.setter
    def state(self, val):
        self._state = val

    def listen(self):
        """
        Start listening for remote commands

        Call this in good time before hosting a game,
        e.g. when the host game dialog is being shown.
        """
        assert self.state == GameSessionState.OFF
        self.state = GameSessionState.LISTENING
        if self.connectivity.is_ready:
            self.ready.emit()
        else:
            self.connectivity.prepare()

    def handle_message(self, message):
        command, args = message.get('command'), message.get('args', [])
        if command == 'SendNatPacket':
            addr_and_port, message = args
            host, port = addr_and_port.split(':')
            self.connectivity.send(message, (host, port))
        elif command == 'CreatePermission':
            addr_and_port = args[0]
            host, port = addr_and_port.split(':')
            self.connectivity.permit((host, port))
        elif command == 'JoinGame':
            addr, login, peer_id = args
            self._joins.append(peer_id)
            self.connectivity.bind(addr, login, peer_id)
        elif command == 'ConnectToPeer':
            addr, login, peer_id = args
            self._connects.append(peer_id)
            self.connectivity.bind(addr, login, peer_id)
        else:
            self._game_connection.send(command, *args)

    def send(self, command_id, args):
        self._logger.info("Outgoing relay message {} {}".format(
            command_id, args))
        self._client.send({
            'command': command_id,
            'target': 'game',
            'args': args or []
        })

    def _peer_bound(self, login, peer_id, port):
        self._logger.info("Bound peer {}/{} to {}".format(
            login, peer_id, port))
        if peer_id in self._connects:
            self._game_connection.send('ConnectToPeer',
                                       '127.0.0.1:{}'.format(port), login,
                                       peer_id)
            self._connects.remove(peer_id)
        elif peer_id in self._joins:
            self._game_connection.send('JoinGame', '127.0.0.1:{}'.format(port),
                                       login, peer_id)
            self._joins.remove(peer_id)

    def _new_game_connection(self):
        self._logger.info("Game connected through GPGNet")
        assert not self._game_connection
        self._game_connection = GPGNetConnection(
            self._game_listener.nextPendingConnection())
        self._game_connection.messageReceived.connect(self._on_game_message)
        self.state = GameSessionState.RUNNING

    def _on_game_message(self, command, args):
        self._logger.info("Incoming GPGNet: {} {}".format(command, args))
        if command == "GameState":
            if args[0] == 'Idle':
                # autolobby, port, nickname, uid, hasSupcom
                self._game_connection.send("CreateLobby", self.init_mode,
                                           self.game_port + 1, self.me.login,
                                           self.me.id, 1)
            elif args[0] == 'Lobby':
                # TODO: Eagerly initialize the game by hosting/joining early
                pass
        self.send(command, args)

    def _turn_state_changed(self, val):
        if val == TURNState.BOUND:
            self.ready.emit()

    def _launched(self):
        self._logger.info("Game has started")

    def _exited(self, status):
        self._game_connection = None
        self.state = GameSessionState.OFF
        self._logger.info(
            "Game has exited with status code: {}".format(status))
        self.send('GameState', ['Ended'])
示例#9
0
class HTTPProxy(QObject):

    debug = True
    log = sys.stderr
    username = '******'
    password = '******'
    stopServing = pyqtSlot()

    def __init__(self, parent=None):
        super(HTTPProxy, self).__init__(parent)
        self.proxy_server = QTcpServer(self)
        self.proxy_server.listen(QHostAddress.Any, 8000)
        self.proxy_server.newConnection.connect(self.manage_request)

        if self.debug:
            self.log.write('Proxy server running on 0.0.0.0 port %s\n\n' %
                self.port())

    def port(self):
        return self.proxy_server.serverPort()

    def addr(self):
        return self.proxy_server.serverAddress().toString()

    def stopServing(self):
        if self.debug:
            self.log.write('Service is stopping...\n\n')

        # does not "close" the server, just stop listening...
        self.proxy_server.close()

        if self.proxy_server.hasPendingConnections():
            socket = self.proxy_server.nextPendingConnection()
            while socket:
                socket.abort()
                socket = self.proxy_server.nextPendingConnection()

    def manage_request(self):
        proxy_server = self.sender()
        # Qt docs says that the caller of nextPendingConnection()
        # is the parent of the socket
        socket = proxy_server.nextPendingConnection()
        socket.readyRead.connect(self.process_request)
        socket.disconnected.connect(socket.deleteLater)

    def authorize_request(self, request_data):
        return True
        header = QHttpRequestHeader(QString(request_data))
        if self.debug:
            self.log.write(header.toString())

        auth = header.value('Proxy-Authorization')
        if not auth:
            return False

        challenge = base64.b64encode(self.username+':'+self.password)
        return challenge == str(auth).split()[1]

    def process_request(self):
        socket = self.sender()
        request_data = socket.readAll()

        if not self.authorize_request(request_data):
            socket.write('HTTP/1.1 407 Proxy Authentication Required\r\n')
            if self.debug:
                self.log.write('407 Proxy Authentication Required\n\n')
            socket.write('Proxy-Authenticate: Basic realm="test"\r\n')
            socket.write('\r\n')
            socket.disconnectFromHost()
            return
        else:
            # remove Proxy-Authorization header
            start = request_data.indexOf('Proxy-Authorization:')
            end = request_data.lastIndexOf('\r\n')
            request_data.remove(start, end)
            request_data.append('\r\n')

        pos = request_data.indexOf('\r\n')
        request_line = request_data.left(pos)
        request_data.remove(0, pos + 2)

        entries = request_line.split(' ')
        method = entries[0]
        address = entries[1]
        version = entries[2]
        port = '80'
        
        if address.count(':') > 1:
            protocol, host, port = address.split(':')
        else:
            protocol, host = address.split(':')
           
        print 'address', address
        
        #url = QUrl( protocol + host )
        url = QUrl.fromEncoded(address)
        #url.setHost( host )
        #url.setPort( int(port) )
        
        if not url.isValid():
            if self.debug:
                self.log.write('Invalid URL: %s\n\n', url)
            socket.disconnectFromHost()
            return

        host = url.host()
        port = 80 if (url.port() < 0) else url.port()
        req = url.encodedPath()
        if url.hasQuery():
            req.append('?').append(url.encodedQuery())
        request_line = method + ' ' + req + ' ' + version + '\r\n'
        request_data.prepend(request_line)

        if self.debug:
            self.log.write(method + ' ' + address + ' ' + version + '\n\n')

        key = host + ':' + QString.number(port)
        proxy_socket = socket.findChild(QTcpSocket, key)
        if proxy_socket:
            proxy_socket.setObjectName(key)
            proxy_socket.setProperty('url', url)
            proxy_socket.setProperty('request_data', request_data)
            proxy_socket.write(request_data)
        else:
            proxy_socket = QTcpSocket(socket)
            proxy_socket.setObjectName(key)
            proxy_socket.setProperty('url', url)
            proxy_socket.setProperty('request_data', request_data)
            proxy_socket.connected.connect(self.send_request)
            proxy_socket.readyRead.connect(self.transfer_data)
            proxy_socket.disconnected.connect(self.close_connection)
            proxy_socket.error.connect(self.close_connection)
            proxy_socket.connectToHost(host, port)

    def send_request(self):
        proxy_socket = self.sender()
        request_data = proxy_socket.property('request_data').toByteArray()
        proxy_socket.write(request_data)

    def transfer_data(self):
        proxy_socket = self.sender()
        socket = proxy_socket.parent()
        socket.write(proxy_socket.readAll())

    def close_connection(self):
        proxy_socket = self.sender()
        if proxy_socket:
            socket = proxy_socket.parent()
            if isinstance(socket, QTcpSocket) and socket:
                socket.disconnectFromHost()
            if proxy_socket.error() != QTcpSocket.RemoteHostClosedError:
                url = proxy_socket.property('url').toUrl()
                error_string = proxy_socket.errorString()

                if self.debug:
                    self.log.write('Error for %s %s\n\n' % (url, error_string))

            proxy_socket.deleteLater()
示例#10
0
class ControlServer(QObject):

    # Signal to inform that the set logging level command has been received
    logging_command_received = pyqtSignal(int)

    # Signal to inform that the quit command has been received and the system should exit
    quit_command_received = pyqtSignal()

    def __init__(self):
        QObject.__init__(self)

        # logging instance
        self.log = logging.getLogger('GDAIS.ControlServer')

        # TCP server to listen for control commands
        self.tcp_server = QTcpServer()

        # regexp to check if command is 'set_log_level'
        self.valid_loglevel = re.compile(r"^set_log_level (\d?0)$")

    def start(self):
        self.log.info("Starting TCP server...")
        if self.tcp_server.listen(port=12345):
            txt = "Listening at http://localhost:{0} for commands"
            self.log.info(txt.format(self.tcp_server.serverPort()))
            self.tcp_server.newConnection.connect(self._accept_connection)
        else:
            self.log.warn("Unable to start: {0}".format(
                self.tcp_server.errorString()))

            # define a timer to auto-quit the app after 10 sec
            timeout = 10  # seconds
            self.log.warn(
                "GDAIS will run for {0} seconds and then die".format(timeout))
            self.timer = QTimer()
            self.timer.timeout.connect(self.quit)
            self.timer.start(timeout * 1000)  # msec

    def quit(self):
        if self.tcp_connection and self.tcp_connection.state(
        ) == QTcpSocket.ConnectedState:
            loop = QEventLoop()
            self.tcp_connection.disconnected.connect(loop.quit)
            self.tcp_connection.disconnectFromHost()
            self.log.debug("Entering disconnect state...")
            if self.tcp_connection.state() == QTcpSocket.ConnectedState:
                loop.exec_()
            self.log.debug("Done waiting, closing server...")
        if self.tcp_server.isListening():
            self.tcp_server.close()
        self.quit_command_received.emit()

    def _accept_connection(self):
        self.tcp_connection = self.tcp_server.nextPendingConnection()
        self.tcp_connection.readyRead.connect(self._read_data)
        self.tcp_connection.error.connect(self._error_ocurred)

        self.log.debug("Accepted connection")

    def _read_data(self):
        tcp_data = self.tcp_connection.readAll()
        if tcp_data == 'quit':
            self.log.info("Received 'quit' command")
            self.quit()
        elif self.valid_loglevel.match(tcp_data):
            self.log.info("Received 'set_log_level' command")
            try:
                new_level = int(self.valid_loglevel.match(tcp_data).group(1))
            except ValueError:
                self.log.exception("Level has to be an integer value")
            else:
                self.logging_command_received.emit(new_level)
        else:
            self.log.error("Received unknown command: {0}".format(tcp_data))

    def _error_ocurred(self, socket_error):
        if socket_error == QTcpSocket.RemoteHostClosedError:
            self.log.info(self.tcp_connection.errorString())
        else:
            self.log.error(self.tcp_connection.errorString())