Beispiel #1
0
class Udev(QObject):
    
    def __init__(self):
        super(Udev, self).__init__()

    def monitor_async(self, subsystems, device_type, callbak):
        context = Context()
        monitor = Monitor.from_netlink(context)
        monitor.filter_by(subsystems)
        def device_event(device):
            self.emit(SIGNAL("signal_udev"), device)
            if callbak != None:
                callbak(device)
        try:
            self.observer = MonitorObserver(monitor, callback=device_event, name='udev-monitor-observer')
            self.observer.daemon
            self.observer.start()
            #observer.stop()
        except Exception as e:
            LogRecord.instance().logger.info(u'USB监听启动异常(%s)'%(str(e)))
            
    def monitorStop(self):
        try:
            self.observer.stop()
        except Exception as e:
            pass 
def initialize():
	context = Context()
	monitor = Monitor.from_netlink(context)
	monitor.filter_by(subsystem='tty')
	observer = MonitorObserver(monitor, callback=print_device_event, name = 'monitor-observer')
	observer.daemon
	observer.start()
Beispiel #3
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class Listener(object):

    def __init__(self):
        self.context = Context()
        self.monitor = Monitor.from_netlink(self.context)
        self.monitor.filter_by(subsystem='usb')
        self.observer = MonitorObserver(
            self.monitor, callback=self.event_handler, name="blahblah")
        self.observer.daemon = True

    def start_listening(self):
        self.observer.start()

    def event_handler(self, device):
        d = {k: device[k] for k in device}

        if 'ID_VENDOR_ID' not in d or 'ACTION' not in d:
            return

        if d['ID_VENDOR_ID'] not in vendor_ids:
            return

        sleep(2) # Give the drive time to mount
        self.device_state_changed(d['ACTION'])

    def device_state_changed(self, action):
        raise NotImplementedError
    async def _async_start_monitor(self) -> None:
        """Start monitoring hardware with pyudev."""
        if not sys.platform.startswith("linux"):
            return
        info = await system_info.async_get_system_info(self.hass)
        if info.get("docker"):
            return

        from pyudev import (  # pylint: disable=import-outside-toplevel
            Context, Monitor, MonitorObserver,
        )

        try:
            context = Context()
        except (ImportError, OSError):
            return

        monitor = Monitor.from_netlink(context)
        try:
            monitor.filter_by(subsystem="tty")
        except ValueError as ex:  # this fails on WSL
            _LOGGER.debug(
                "Unable to setup pyudev filtering; This is expected on WSL: %s",
                ex)
            return
        observer = MonitorObserver(monitor,
                                   callback=self._device_discovered,
                                   name="usb-observer")
        observer.start()
        self.hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP,
                                        lambda event: observer.stop())
        self.observer_active = True
Beispiel #5
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 def __registerUdevCallback(self):
     context = pyudev.Context()
     monitor = Monitor.from_netlink(context)
     monitor.filter_by(subsystem='block')
     observer = MonitorObserver(monitor,
                                callback=self.__checkUdevEvent,
                                name='monitor-observer')
     observer.start()
def start_udev_monitoring():
    #Setting up Linux UDEV monitoring in a separate thread
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='block')
    observer = MonitorObserver(monitor, callback=find_garmin, name='monitor-observer')
    observer.daemon = True
    observer.start()
Beispiel #7
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	def watch(self, filtername, callback):
		context = Context()
		monitor = Monitor.from_netlink(context)

		monitor.filter_by(filtername)

		observer = MonitorObserver(monitor, callback=callback, name="monitor-observer")
		observer.start()
def monitor_background():
    c = Context()

    monitor = Monitor.from_netlink(c)
    monitor.filter_by("block", "disk")

    obs = MonitorObserver(monitor, device_event)
    obs.start()
Beispiel #9
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def set_monitor_func(func):
    global HANDLER
    HANDLER = func
    udev_context = Context()
    monitor = Monitor.from_netlink(udev_context)
    monitor.filter_by('block')
    observer = MonitorObserver(monitor, log_event)
    observer.start()
Beispiel #10
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def initialize():
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='tty')
    observer = MonitorObserver(monitor,
                               callback=print_device_event,
                               name='monitor-observer')
    observer.daemon
    observer.start()
Beispiel #11
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def startListener():
    # create a context, create monitor at kernel level, select devices
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='block')

    observer = MonitorObserver(monitor, usbEventCallback, name="usbdev")
    # set this as the main thread
    observer.setDaemon(False)
    observer.start()

    return observer
Beispiel #12
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def main():
    lcd.lcd_init()  #initialize lcd display in preparation for sending messages
    setConfiguration(
    )  #query configuration and set remote properties for testing against

    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='tty')
    observer = MonitorObserver(monitor, device_event)
    observer.start()

    while True:
        n = input("Jeelink Tester v 1.0 type 'stop' to end\n")
        if n == 'stop':
            observer.stop()
            lcd.cleanup()
            break
class UdevManager(object):
    """Manger mixin that takes care of udev event handling."""

    def __init__(self):
        # Create connection to udev.
        self.udev = Context()


    def start_udev_tasks(self):
        """Start monitoring system devices using udev."""

        def udev_handler(action, device):
            if device.subsystem in ('net', 'block'):
                self.raise_event((action, device.subsystem), device)
                self.raise_event((action, device.subsystem, device.sys_name), device)

        # Monitor interesting system events.
        self.monitor = Monitor.from_netlink(self.udev)
        self.observer = MonitorObserver(self.monitor, from_thread(udev_handler))
        self.observer.start()

        # Trigger missed events.
        reactor.callLater(0, self.raise_missed_udev_events)


    def raise_missed_udev_events(self):
        """
        Raise events for all present net and block devices.

        This is intended to be executed right after we subscribe
        to regular udev event notifications to get up to speed with
        current state of the system.

        Raised events are:
            ('add', subsystem)            -> device
            ('add', subsystem, sys_name)  -> device
        """

        for subsystem in ('net', 'block'):
            for device in self.udev.list_devices(subsystem=subsystem):
                self.raise_event(('add', subsystem), device)
                self.raise_event(('add', subsystem, device.sys_name), device)
Beispiel #14
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    def __init__(self, serial_num, obj, refresh=0, baudrate=115200):
        # Name and type of the connection peer
        self.name = ''
        self.type = ''

        self.object = obj
        self.baudrate = baudrate
        self.serial_num = serial_num
        self.devpath = ''

        if refresh > 0:
            self._refresh = refresh

        self.device = pylibftdi.Device(mode='b',
                                       device_id=self.serial_num,
                                       lazy_open=True)
        self.device._baudrate = self.baudrate

        self._updateTimer = LoopingCall(self.update)
        self._updateTimer.start(self._refresh)
        self._readTimer = LoopingCall(self.read)
        self._readTimer.start(self._refresh / 10)

        # the following will start a small daemon to monitor the connection and call ConnectionMade and ConnectionLost
        # pyftdi doesn't seem to support this so this pyudev daemon is necessary

        context = Context()
        # find out whether device is already connected and if that is the case open ftdi connection
        for device in context.list_devices(subsystem='usb'):
            if device.get('ID_SERIAL_SHORT') == self.serial_num:
                for ch in device.children:
                    if 'tty' not in ch.get('DEVPATH'):
                        self.devpath = ch.get('DEVPATH')
                        self.ConnectionMade()

        cm = Monitor.from_netlink(context)
        cm.filter_by(subsystem='usb')
        observer = MonitorObserver(cm,
                                   callback=self.ConnectionMCallBack,
                                   name='monitor-observer')
        observer.start()
Beispiel #15
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    def __init__(self,
                 serial_num,
                 obj,
                 refresh=0,
                 baudrate=115200,
                 bytesize=8,
                 parity='N',
                 stopbits=2,
                 timeout=400,
                 debug=False):
        # Name and type of the connection peer
        self.name = ''
        self.type = ''

        self.serial_num = serial_num
        self.object = obj
        self.baudrate = baudrate
        self.bytesize = bytesize
        self.parity = parity
        self.stopbits = stopbits
        self.timeout = timeout

        self._debug = debug

        if refresh > 0:
            self._refresh = refresh

        self._updateTimer = LoopingCall(self.update)

        context = Context()
        for device in context.list_devices(subsystem='tty'):
            if device.get('ID_SERIAL_SHORT') == self.serial_num:
                self._devname = device['DEVNAME']
                self.Connect()

        cm = Monitor.from_netlink(context)
        cm.filter_by(subsystem='tty')
        observer = MonitorObserver(cm,
                                   callback=self.ConnectionMCallBack,
                                   name='monitor-observer')
        observer.start()
Beispiel #16
0
def handle_print_usb_events():
    def print_usb_events(action, device):
        string_to_print = '{} - {}'.format(action, device)
        for key in device.keys():
            string_to_print += '\n    {}: {}'.format(key, device.get(key, ''))
        print(string_to_print)

    # Setup the code for monitoring USB events
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb')

    observer = MonitorObserver(monitor,
                               print_usb_events,
                               name='kamvas-usb-monitor')

    # This is needed to prevent the main thread from finishing which would close the process
    # and nothing will be displayed
    observer.daemon = False

    # Start monitoring USB events asynchronously
    observer.start()
Beispiel #17
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class CDMonitor():
    """
    Monitor Kernel events asynchronously for CD (drive) and CDROM (media)
    and trigger the CD2Cloud process
    """
    def __init__(self, func_name):
        """initialization"""
        self.log = getLogger(__name__)
        context = Context()
        monitor = Monitor.from_netlink(context)
        self.observer = MonitorObserver(monitor, callback=func_name,
                                   name='monitor-observer')
        self.observer.daemon = False

    def start(self):
        """Start monitor"""
        self.observer.start()
        self.log.info('Started CD2Cloud monitor... listening for CD events')

    def stop(self):
        """Stop monitor"""
        self.observer.stop()
        self.log.info('Stopped CD2Cloud monitor')
def run_main():
    global args
    args = get_args()

    # Setup the code for monitoring USB events
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb')

    # Start monitoring USB events asynchronously
    observer = MonitorObserver(monitor,
                               handle_usb_event,
                               name='monitor-observer')
    observer.daemon = False
    observer.start()

    # Try to start the driver. It will raise an error if the USB device is not available
    try:
        evdev_is_running = True
        run_evdev()
    except:
        if not args['--quiet-mode']:
            print('Error occured')
        evdev_is_running = False
Beispiel #19
0
    def start_listener(self):
        """Create a context, create monitor at kernel level, select devices"""
        context = Context()
        monitor = Monitor.from_netlink(context)
        monitor.filter_by(subsystem='block')

        observer = MonitorObserver(monitor,
                                   self.event_callback,
                                   name="storage_monitor")
        observer.start()

        # Check if there is already a usb attached
        for device in context.list_devices(subsystem='block',
                                           DEVTYPE='partition'):
            if re.search('/dev/s.+', device.get('DEVNAME')):
                self.usb_add(device)
                continue

        # Check if there is already an sd attached
        for device in context.list_devices(subsystem='block',
                                           DEVTYPE='partition'):
            if re.search('/dev/mmcblk1p1', device.get('DEVNAME')):
                self.sd_add(device)
                continue
Beispiel #20
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class RazerDaemon(DBusService):
    """
    Daemon class

    This class sets up the main run loop which serves DBus messages. The logger is initialised
    in this module as well as finding and initialising devices.

    Serves the following functions via DBus
    * getDevices - Returns a list of serial numbers
    * enableTurnOffOnScreensaver - Starts/Continues the run loop on the screensaver thread
    * disableTurnOffOnScreensaver - Pauses the run loop on the screensaver thread
    """

    BUS_PATH = 'org.razer'

    def __init__(self,
                 verbose=False,
                 log_dir=None,
                 console_log=False,
                 run_dir=None,
                 config_file=None,
                 test_dir=None):

        # Check if process exists
        exit_code = subprocess.call(['pgrep', 'razer-service'],
                                    stderr=subprocess.DEVNULL,
                                    stdout=subprocess.DEVNULL)

        if exit_code == 0:
            print("Daemon already exists. Please stop that one.",
                  file=sys.stderr)
            exit(-1)

        setproctitle.setproctitle('razer-service')

        # Expanding ~ as python doesnt do it by default, also creating dirs if needed
        if log_dir is not None:
            log_dir = os.path.expanduser(log_dir)
            os.makedirs(log_dir, mode=0o750, exist_ok=True)
        if run_dir is not None:
            run_dir = os.path.expanduser(run_dir)
            os.makedirs(run_dir, mode=0o750, exist_ok=True)
        if config_file is not None:
            config_file = os.path.expanduser(config_file)
            os.makedirs(os.path.dirname(config_file),
                        mode=0o750,
                        exist_ok=True)

        self._test_dir = test_dir
        self._data_dir = run_dir
        self._config_file = config_file
        self._config = configparser.ConfigParser()
        self.read_config(config_file)

        # Setup DBus to use gobject main loop
        dbus.mainloop.glib.threads_init()
        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
        DBusService.__init__(self, self.BUS_PATH, '/org/razer')

        self._init_signals()
        self._main_loop = GObject.MainLoop()

        # Listen for input events from udev
        self._udev_context = Context()
        udev_monitor = Monitor.from_netlink(self._udev_context)
        udev_monitor.filter_by(subsystem='input')
        self._udev_observer = MonitorObserver(udev_monitor,
                                              callback=self._udev_input_event,
                                              name='device-monitor')

        # Logging
        logging_level = logging.INFO
        if verbose or self._config.getboolean('General', 'verbose_logging'):
            logging_level = logging.DEBUG

        self.logger = logging.getLogger('razer')
        self.logger.setLevel(logging_level)
        formatter = logging.Formatter(
            '%(asctime)s | %(name)-30s | %(levelname)-8s | %(message)s',
            datefmt='%Y-%m-%d %H:%M:%S')
        # Dont propagate to default logger
        self.logger.propagate = 0

        if console_log:
            console_logger = logging.StreamHandler()
            console_logger.setLevel(logging_level)
            console_logger.setFormatter(formatter)
            self.logger.addHandler(console_logger)

        if log_dir is not None:
            log_file = os.path.join(log_dir, 'razer.log')
            file_logger = logging.handlers.RotatingFileHandler(
                log_file, maxBytes=16777216, backupCount=10)  # 16MiB
            file_logger.setLevel(logging_level)
            file_logger.setFormatter(formatter)
            self.logger.addHandler(file_logger)

        self.logger.info("Initialising Daemon (v%s). Pid: %d", __version__,
                         os.getpid())

        # Setup screensaver thread
        self._screensaver_thread = ScreensaverThread(
            self,
            active=self._config.getboolean('Startup',
                                           'devices_off_on_screensaver'))
        self._screensaver_thread.start()

        self._razer_devices = DeviceCollection()
        self._load_devices(first_run=True)

        # Add DBus methods
        self.logger.info("Adding razer.devices.getDevices method to DBus")
        self.add_dbus_method('razer.devices',
                             'getDevices',
                             self.get_serial_list,
                             out_signature='as')
        self.logger.info(
            "Adding razer.devices.enableTurnOffOnScreensaver method to DBus")
        self.add_dbus_method('razer.devices', 'enableTurnOffOnScreensaver',
                             self.enable_turn_off_on_screensaver)
        self.logger.info(
            "Adding razer.devices.disableTurnOffOnScreensaver method to DBus")
        self.add_dbus_method('razer.devices', 'disableTurnOffOnScreensaver',
                             self.disable_turn_off_on_screensaver)
        self.logger.info("Adding razer.devices.syncEffects method to DBus")
        self.add_dbus_method('razer.devices',
                             'syncEffects',
                             self.sync_effects,
                             in_signature='b')
        self.logger.info("Adding razer.daemon.version method to DBus")
        self.add_dbus_method('razer.daemon',
                             'version',
                             self.version,
                             out_signature='s')
        self.logger.info("Adding razer.daemon.stop method to DBus")
        self.add_dbus_method('razer.daemon', 'stop', self.stop)

        # TODO remove
        self.sync_effects(
            self._config.getboolean('Startup', 'sync_effects_enabled'))
        # TODO ======

    def _init_signals(self):
        """
        Heinous hack to properly handle signals on the mainloop. Necessary
        if we want to use the mainloop run() functionality.
        """
        def signal_action(signum):
            """
            Action to take when a signal is trapped
            """
            self.quit(signum)

        def idle_handler():
            """
            GLib idle handler to propagate signals
            """
            GLib.idle_add(signal_action, priority=GLib.PRIORITY_HIGH)

        def handler(*args):
            """
            Unix signal handler
            """
            signal_action(args[0])

        def install_glib_handler(sig):
            """
            Choose a compatible method and install the handler
            """
            unix_signal_add = None

            if hasattr(GLib, "unix_signal_add"):
                unix_signal_add = GLib.unix_signal_add
            elif hasattr(GLib, "unix_signal_add_full"):
                unix_signal_add = GLib.unix_signal_add_full

            if unix_signal_add:
                unix_signal_add(GLib.PRIORITY_HIGH, sig, handler, sig)
            else:
                print("Can't install GLib signal handler!")

        for sig in signal.SIGINT, signal.SIGTERM, signal.SIGHUP:
            signal.signal(sig, idle_handler)
            GLib.idle_add(install_glib_handler,
                          sig,
                          priority=GLib.PRIORITY_HIGH)

    def read_config(self, config_file):
        """
        Read in the config file and set the defaults

        :param config_file: Config file
        :type config_file: str or None
        """
        # Generate sections as trying to access a value even if a default exists will die if the section does not
        for section in ('General', 'Startup', 'Statistics'):
            self._config[section] = {}

        self._config['DEFAULT'] = {
            'verbose_logging': True,
            'sync_effects_enabled': True,
            'devices_off_on_screensaver': True,
            'key_statistics': False,
        }

        if config_file is not None and os.path.exists(config_file):
            self._config.read(config_file)

    def enable_turn_off_on_screensaver(self):
        """
        Enable the turning off of devices when the screensaver is active
        """
        self._screensaver_thread.active = True

    def disable_turn_off_on_screensaver(self):
        """
        Disable the turning off of devices when the screensaver is active
        """
        self._screensaver_thread.active = False

    def version(self):
        """
        Get the daemon version

        :return: Version string
        :rtype: str
        """
        return __version__

    def suspend_devices(self):
        """
        Suspend all devices
        """
        for device in self._razer_devices:
            device.dbus.suspend_device()

    def resume_devices(self):
        """
        Resume all devices
        """
        for device in self._razer_devices:
            device.dbus.resume_device()

    def get_serial_list(self):
        """
        Get list of devices serials
        """
        serial_list = self._razer_devices.serials()
        self.logger.debug('DBus called get_serial_list')
        return serial_list

    def sync_effects(self, enabled):
        """
        Sync the effects across the devices

        :param enabled: True to sync effects
        :type enabled: bool
        """
        # Todo perhaps move logic to device collection
        for device in self._razer_devices.devices:
            device.dbus.effect_sync = enabled

    def _load_devices(self, first_run=False):
        """
        Go through supported devices and load them

        Loops through the available hardware classes, loops through
        each device in the system and adds it if needs be.
        """
        classes = razer_daemon.hardware.get_device_classes()

        if first_run:
            # Just some pretty output
            max_name_len = max([len(cls.__name__) for cls in classes]) + 2
            for cls in classes:
                format_str = 'Loaded device specification: {0:-<' + str(
                    max_name_len) + '} ({1:04x}:{2:04X})'

                self.logger.debug(
                    format_str.format(cls.__name__ + ' ', cls.USB_VID,
                                      cls.USB_PID))

        for device in self._udev_context.list_devices(subsystem='hid'):
            device_number = 0

            for device_class in classes:
                if device.sys_name in self._razer_devices:
                    continue

                if device_class.match(
                        device.sys_name, device.parent.sys_path
                ):  # Check it matches sys/ ID format and has device_type file
                    self.logger.info('Found device.%d: %s', device_number,
                                     device.sys_name)
                    razer_device = device_class(device.sys_path,
                                                device_number,
                                                self._config,
                                                testing=self._test_dir
                                                is not None)

                    # Wireless devices sometimes dont listen
                    count = 0
                    while count < 3:
                        # Loop to get serial, exit early if it gets one
                        device_serial = razer_device.get_serial()
                        if len(device_serial) > 0:
                            break
                        count += 1
                    else:
                        logging.warning(
                            "Could not get serial for device {0}. Skipping".
                            format(device.sys_name))
                        continue

                    self._razer_devices.add(device.sys_name, device_serial,
                                            razer_device)

                    device_number += 1

    def _remove_devices(self):
        """
        Go through the list of current devices and if they no longer exist then remove them
        """
        hid_devices = [
            dev.sys_name
            for dev in self._udev_context.list_devices(subsystem='hid')
        ]
        devices_to_remove = [
            dev for dev in self._razer_devices if dev not in hid_devices
        ]
        for device in devices_to_remove:
            if self._test_dir is not None:
                # Remove from DBus
                device.dbus.remove_from_connection()

            # Remove device
            self.logger.warning("Device %s is missing. Removing from DBus",
                                device.device_id)
            del self._razer_devices[device.device_id]

    def _udev_input_event(self, device):
        self.logger.debug('Device event [%s]: %s', device.action,
                          device.device_path)
        if device.action == 'add':
            self._load_devices()
        elif device.action == 'remove':
            self._remove_devices()

    def run(self):
        """
        Run the daemon
        """
        self.logger.info('Serving DBus')

        # Start listening for device changes
        self._udev_observer.start()

        # Start the mainloop
        try:
            self._main_loop.run()
        except KeyboardInterrupt:
            self.logger.debug('Shutting down')

    def stop(self):
        """
        Wrapper for quit
        """
        self.quit(None)

    def quit(self, signum):
        """
        Quit by stopping the main loop, observer, and screensaver thread
        """
        # pylint: disable=unused-argument
        if signum is None:
            self.logger.info('Stopping daemon.')
        else:
            self.logger.info('Stopping daemon on signal %d', signum)

        self._main_loop.quit()

        # Stop udev monitor
        self._udev_observer.send_stop()

        # Stop screensaver
        self._screensaver_thread.shutdown = True
        self._screensaver_thread.join(timeout=2)
        if self._screensaver_thread.is_alive():
            self.logger.warning('Could not stop the screensaver thread')

        for device in self._razer_devices:
            device.dbus.close()
Beispiel #21
0
class KeyboardControl:
    """The keyboard control for the player"""

    def __init__(self, player):
        try:
            self.player = player
            
             # Create a context, create monitor at kernel level, select devices
            context = Context()
            monitor = Monitor.from_netlink(context)
            monitor.filter_by(subsystem='input')

            self.observer = MonitorObserver(monitor, self.usb_event_callback, name="keyboard")
            self.observer.start()

            self.pressed = False    # Stores state of press
            
            # Check if there is already a keyboard attached
            for device in context.list_devices(subsystem='input'):
                if device.get('ID_INPUT_KEYBOARD') == '1':
                    if device.get('DEVNAME') != None:
                        device_name = InputDevice(device.get('DEVNAME'))
                        thread = threading.Thread(target=self.keyboard_event, args=(device_name,), daemon=True)
                        thread.start()
                        continue


        except Exception as ex:
            print('Keyboard Control: Error starting: ' + str(ex))

    def usb_event_callback(self, action, device):
        """Callback when a usb device is plugged in"""
        if action == 'add' and device.get('ID_INPUT_KEYBOARD') == '1':
            print('Keyboard: input add')
            if device.get('DEVNAME') != None:
                device_name = InputDevice(device.get('DEVNAME'))
                thread = threading.Thread(target=self.keyboard_event, args=(device_name,), daemon=True)
                thread.start()
            
    def key_input(self, key_pressed):
        print('Keyboard Control: Key pressed: ' + key_pressed)
        if key_pressed == 'KEY_SPACE':
            if self.player.is_playing:
                self.player.pause_command('')
            else:
                self.player.play_command('')
        elif key_pressed == 'KEY_L':
            self.player.loop_command('')
        elif key_pressed == 'KEY_Z':
            self.player.stop_command('')
        elif key_pressed == 'KEY_X':
            self.player.video_mute_command('1')
        elif key_pressed == 'KEY_C':
            self.player.video_mute_command('0')
        elif key_pressed == 'KEY_V':
            self.player.audio_mute_command('1')
        elif key_pressed == 'KEY_B':
            self.player.audio_mute_command('0')
        elif key_pressed == 'KEY_S':
            self.player.stop_command('')

    def keyboard_event(self, device):
        """Handles keyboard events"""
        try:
            for event in device.read_loop():
                # This is a key press
                if event.type == ecodes.EV_KEY: # pylint: disable=no-member
                    # It is a press down
                    if event.value == 1:
                        # This is the first press we've seen
                        if self.pressed != True:
                            self.pressed = True
                            self.key_input(ecodes.KEY[event.code]) # pylint: disable=no-member
                    # Key released
                    elif event.value == 0:
                        self.pressed = False

        except Exception as ex:
            print('Keyboard control: Event error (most likely unplugged)' + str(ex))
Beispiel #22
0
    elif (action == 'remove') and (device.get('ID_INPUT_KEYBOARD') == '1'):
        print('Keyboard: input remove')
            
# def key_input(key_pressed):
#     """Handles keyboard release"""
#     print('Keyboard Control: Key released: ' + key_pressed.name)
#     if key_pressed.name == 'space':
#         print('shit')

async def keyboard_event(device):
    try:
        async for event in device.async_read_loop():
            if event.type == ecodes.EV_KEY:
                print(ecodes.KEY[event.code])

    except Exception as ex:
        print('bum: ' + str(ex))


loop = asyncio.get_event_loop()

# Create a context, create monitor at kernel level, select devices
context = Context()
monitor = Monitor.from_netlink(context)
monitor.filter_by(subsystem='input')

observer = MonitorObserver(monitor, usb_event_callback, name="keyboard")
observer.start()

while 1:
    time.sleep(10)
Beispiel #23
0
class USB_Session_Blocker(dbus.service.Object):

    # Create context
    context = Context()

    # Create monitor
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb', device_type='usb_device')

    def __init__(self):

        try:
            with open(expanduser("~") + '/.local/share/trusted_devices',
                      'rt') as f_in:
                try:
                    self.trusted_devices = json.load(f_in)
                except ValueError:
                    self.trusted_devices = []

        except IOError:
            self.trusted_devices = []

        self.usb_blocker = dbus.SystemBus().get_object(
            'org.gnome.USBBlocker', '/org/gnome/USBBlocker')
        self.notifier = dbus.SessionBus().get_object(
            'org.freedesktop.Notifications', '/org/freedesktop/Notifications')
        self.observer = None
        self.number_notifications = {}

        self.allowed_devices = []
        bus_name = dbus.service.BusName('org.gnome.USBInhibit',
                                        bus=dbus.SessionBus())
        dbus.service.Object.__init__(self, bus_name, '/org/gnome/USBInhibit')


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
      in_signature='', out_signature='b')
    def get_status(self):
        return self.usb_blocker.get_dbus_method(
            'get_status', 'org.gnome.USBBlocker.inhibit')()

    @dbus.service.method(dbus_interface='org.gnome.USBInhibit')
    def start_inhibit(self):
        self.notification = self.notifier.get_dbus_method('Notify', \
                    'org.freedesktop.Notifications')

        self.observer = MonitorObserver(self.monitor,
                                        callback=self.device_detected,
                                        name='monitor-usb-session')

        self.notifier.connect_to_signal('ActionInvoked',
                                        self.action_new_device)

        self.observer.daemon = True
        self.observer.start()

        print("Start monitoring Dbus session message")
        self.usb_blocker.get_dbus_method('start',
                                         'org.gnome.USBBlocker.inhibit')()

    def action_new_device(self, id, action):
        if id in self.number_notifications:
            if action == "Allow":
                print "Allowed"
                bus_id, dev_id = self.number_notifications.pop(id)
                if self.usb_blocker.get_dbus_method(
                        'enable_device',
                        'org.gnome.USBBlocker.device')(bus_id, dev_id):
                    self.trusted_devices.append(dev_id)
                    self.write_trusted_devices()

                print(bus_id)
                print(dev_id)

            # If the action is Block then the device must remain blocked
            if action == "Block":
                print "Blocked"

    @dbus.service.method(dbus_interface='org.gnome.USBInhibit')
    def stop_inhibit(self):
        print("Stop monitoring Dbus session message")

        if self.observer != None:
            self.observer.stop()
            self.usb_blocker.get_dbus_method('stop',
                                             'org.gnome.USBBlocker.inhibit')()


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='n', out_signature='')
    def add_nonblock_device(self, bDeviceClass):
        print("Add device with the bDeviceClass code " + str(bDeviceClass))
        self.allowed_devices.append(bDeviceClass)


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='n', out_signature='')
    def remove_nonblock_device(self, bDeviceClass):
        print("Remove device with the bDeviceClass code " + str(bDeviceClass))
        if bDeviceClass in self.allowed_devices:
            self.allowed_devices.remove(bDeviceClass)


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='', out_signature='s')
    def show_nonblock_devices(self):
        return str(self.allowed_devices)

    def device_detected(self, device):
        import usb.core

        bus_id = device.sys_name
        action = device.action

        # Check only new connected devices to see if they are on an allowed list
        if action == 'add':
            print("Device attached")

            devnum = int(device.attributes.get("devnum"))
            busnum = int(device.attributes.get("busnum"))

            dev = usb.core.find(address=devnum, bus=busnum)

            # Get the device unique id
            dev_id = read_device.get_descriptors(dev)

            if dev_id in self.trusted_devices:
                self.usb_blocker.get_dbus_method(
                    'enable_device', 'org.gnome.USBBlocker.device')(bus_id,
                                                                    dev_id)
                return

            if read_device.find_device(
                    dev,
                    list(
                        usb.core.find(find_all=True,
                                      custom_match=read_device.custom_search(
                                          self.allowed_devices)))):

                print("Device found on the non blocking list -- session")
                if self.usb_blocker.get_dbus_method(
                        'enable_device',
                        'org.gnome.USBBlocker.device')(bus_id, dev_id):
                    self.trusted_devices.append(dev_id)
                    self.write_trusted_devices()

                return

            id_notification = self.notification(
                "USB-inhibitor", "0", "", "Unknown device connected",
                "An unknown device has been connected to the system. Do you want to allow it to connect?",
                ["Allow", "Connect", "Block", "Block"], {}, 5)

            self.number_notifications[id_notification] = [bus_id, dev_id]

    def write_trusted_devices(self):
        with open(expanduser("~") + '/.local/share/trusted_devices',
                  'wt') as f_out:
            json.dump(self.trusted_devices, f_out)
Beispiel #24
0
class UsbStorageMonitor(object):
    """ USB storage device add monitor

    This monitor is listening to UDEV for USB storage device 'add' events. The callback 
    that is provided to the constructor is called for every USB storage device that is
    added to the system.
    """

    def __init__(self, add_callback, remove_callback = None, change_callback = None, for_gui = False):
        self._logger = logging.getLogger('efalive.UsbStorageMonitor')

        self._external_add_callback = add_callback
        self._external_remove_callback = remove_callback
        self._external_change_callback = change_callback

        self._udev_context = Context()
        self._udev_monitor = Monitor.from_netlink(self._udev_context)
        self._udev_monitor.filter_by('block', device_type='partition')
        self._for_gui = for_gui
        if for_gui:
            self._udev_observer = UdevGuiObserver(self._udev_monitor)
            self._udev_observer.connect('device-event', self._handle_gui_device_event)
        else:
            self._udev_observer = UdevObserver(self._udev_monitor, callback=self._handle_device_event, name='monitor-observer')

    def start(self):
        if self._for_gui:
            self._udev_monitor.start()
        else:
            self._udev_observer.start()

    def stop(self):
        if self._for_gui:
            self._udev_monitor.stop()
        else:
            self._udev_observer.stop()

    def _handle_gui_device_event(self, observer, device):
        self._handle_device_event(device)

    def _handle_device_event(self, device):
        self._debug_device(device)
        if (device.get("ID_BUS") != "usb"):
            return
        self._logger.info("Action %s for device %s" % (device.action, device.device_node))
        if device.action == "add":
            wrapped_device = self._wrap_device(device)
            self._external_add_callback(wrapped_device)
        elif device.action == "remove" and self._external_remove_callback != None:
            wrapped_device = self._wrap_device(device)
            self._external_remove_callback(wrapped_device)
        elif device.action == "change" and self._external_change_callback != None:
            wrapped_device = self._wrap_device(device)
            self._external_change_callback(wrapped_device)
        else:
            self._logger.info("Unhandled action: %s" % device.action)

    def _debug_device(self, device):
        self._logger.debug("Device:")
        self._logger.debug("\tSubsystem: %s" % device.subsystem)
        self._logger.debug("\tType: %s" % device.device_type)
        self._logger.debug("\tName: %s" % device.sys_name)
        self._logger.debug("\tNumber: %s" % device.sys_number)
        self._logger.debug("\tSYS-fs path: %s" % device.sys_path)
        self._logger.debug("\tDriver: %s" % device.driver)
        self._logger.debug("\tAction: %s" % device.action)
        self._logger.debug("\tFile: %s" % device.device_node)
        #self._logger.debug("\tLinks: %s" % device.get_device_file_symlinks())
        #self._logger.debug("\tProperties: %s" % device.get_property_keys())
        #self._logger.debug("\tSYBSYSTEM: %s" % device.get_property("SUBSYSTEM"))
        #self._logger.debug("\tDEVTYPE: %s" % device.get_property("DEVTYPE"))
        ##self._logger.debug("\tID_VENDOR: %s" % device.get("ID_VENDOR"))
        self._logger.debug("\tID_SERIAL: %s" % device.properties.get("ID_SERIAL"))
        self._logger.debug("\tID_MODEL: %s" % device.get("ID_MODEL"))
        self._logger.debug("\tID_TYPE: %s" % device.get("ID_TYPE"))
        self._logger.debug("\tID_BUS: %s" % device.get("ID_BUS"))
        self._logger.debug("\tID_FS_LABEL: %s" % device.get("ID_FS_LABEL"))
        self._logger.debug("\tID_FS_TYPE: %s" % device.get("ID_FS_TYPE"))
        self._logger.debug("\tID_PART_ENTRY_SIZE: %s" % device.get("ID_PART_ENTRY_SIZE"))
        #self._logger.debug("All attributes:")
        #for attrName in device.__iter__():
        #    self._logger.debug(attrName)

    def _wrap_device(self, device):
        """ Convert a PyUdev device to an efaLive device
        """
        if device is None:
            return None
        wrapped_device = UsbStorageDevice(device.device_node)
        if device.get("ID_VENDOR"):
            wrapped_device.vendor = device.get("ID_VENDOR")
        if device.get("ID_MODEL"):
            wrapped_device.model = device.get("ID_MODEL")
        if device.get("ID_PART_ENTRY_SIZE"):
            byte_size = float(device.get("ID_PART_ENTRY_SIZE"))
            size = byte_size / 1024
            unit = "KB"
            if (size > 1024):
                size = size / 1024
                unit = "MB"
            if (size > 1024):
                size = size / 1024
                unit = "GB"
            if (size > 1024):
                size = size / 1024
                unit = "TB"
            wrapped_device.size = "%.1f %s" % (size, unit)
        if device.get("ID_FS_TYPE"):
            wrapped_device.fs_type = device.get("ID_FS_TYPE")
        if device.get("ID_FS_LABEL"):
            wrapped_device.label = device.get("ID_FS_LABEL")
        if device.get("ID_VENDOR_ID") and device.get("ID_MODEL_ID"):
            wrapped_device.bus_id = "%s:%s" % (device.get("ID_VENDOR_ID"), device.get("ID_MODEL_ID"))
        if device.properties.get("ID_SERIAL"):
            wrapped_device.serial = device.properties.get("ID_SERIAL")
        return wrapped_device

    def search_for_usb_block_devices(self):
        for usb_device in self._udev_context.list_devices(subsystem='block', DEVTYPE='partition'):
            if (usb_device.get("ID_BUS") != "usb"):
                continue
            wrapped_device = self._wrap_device(usb_device)
            self._external_add_callback(wrapped_device)
Beispiel #25
0
class UDevBackend(BackendInterface):
    def __init__(self):
        self.context = Context()
        self.monitor = Monitor.from_netlink(self.context)
        self.monitor.filter_by('power_supply')

        self.percent_callback = None
        self.status_callback = None

        (self.battery, self.line_power) = self.find_devices()

        if not self.battery:
            raise BatteryNotFoundError()

        if not self.line_power:
            raise LinePowerNotFoundError()

        self.last_percent = -1
        self.last_status = None

        def on_udev_event(device):
            if device == self.battery:
                self.battery = device
                percent = self.get_percent()
                if percent != self.last_percent:
                    self.last_percent = percent
                    if self.percent_callback:
                        GLib.idle_add(self.percent_callback, percent)

            elif device == self.line_power:
                self.line_power = device
                status = self.get_status()
                if status != self.last_status:
                    self.last_status = status
                    if self.status_callback:
                        GLib.idle_add(self.status_callback, status)

        # XXX I can't get udev (or acpi) to give me battery discharge events
        # without requiring system configuration so we have to poll
        interval = 20000

        def poll_udev():
            battery = Device.from_path(self.context, self.battery.device_path)
            on_udev_event(battery)
            GLib.timeout_add(interval, poll_udev)

        GLib.timeout_add(interval, poll_udev)

        self.observer = MonitorObserver(self.monitor, callback=on_udev_event)

        self.observer.start()

    def find_devices(self):
        line_power = None
        battery = None

        for device in self.context.list_devices(subsystem='power_supply'):
            device_type = device.attributes.asstring('type').lower()
            # TODO
            # 1. handle empty battery port
            # 2. handle multiple devices
            if device_type == 'battery':
                battery = device
            elif device_type == 'mains':
                line_power = device

        return (battery, line_power)

    def get_status(self) -> Status:
        is_online = int(self.line_power.attributes.get('online')) == 1
        if is_online:
            return Status.CHARGING
        else:
            return Status.DISCHARGING

    def get_percent(self) -> float:
        return float(self.battery.attributes.get('capacity'))

    def on_status_change(self, fn: Callable[[Status], None]) -> None:
        self.status_callback = fn

    def on_percent_change(self, fn: Callable[[float], None]) -> None:
        self.percent_callback = fn
Beispiel #26
0
class GC_CModule_UdevMon(GC_CModule):
    MODULE_ID = 'udevmon'

    def __init__(self, gcclient):
        self.gcclient = gcclient
        logger.debug('Initialize Module: %s', self.MODULE_ID)

        # Running State
        self.Running = True

        # Setup pyudev contect and monitor:
        # 1 - Ensure the udev context and monitor is setup:
        self.setupUdevMonitor()
        # 2 - Get and send the current device list:
        gccommand = {}
        gccommand[GC_Utility.GC_MODULEID] = self.MODULE_ID
        response = self.getCurrentUSBDevices()
        logger.debug('Sending udev init data...')
        self.gcclient.sendResult(gccommand, response)
        # 3 - Start the Udev Monitor:
        self.startUdevMonitor(callback=self.udevMonitorHandler)

    def setupUdevMonitor(self, filter_subsystem='usb'):
        logger.debug('Setting up udev context...')
        self.udev_context = Context()
        logger.debug('Setting up monitor context...')
        self.udev_monitor = Monitor.from_netlink(self.udev_context)
        logger.debug('Setting up monitor filter...')
        self.udev_monitor.filter_by(subsystem=filter_subsystem)

    def startUdevMonitor(self, callback):
        observer_name = self.MODULE_ID + '-observer'
        logger.debug('Setting up udev monitor: %s' % observer_name)
        self.udev_observer = MonitorObserver(self.udev_monitor,
                                             callback=callback,
                                             name=observer_name)
        self.udev_observer.start()

    def udevMonitorHandler(self, device):
        """
		Watch udev event and handle each of them.
		"""
        self.parseDeviceObj(device)

    def parseDeviceObj(self, device):
        #logger.debug('Udev Device :: PCI Slot Name: %s' % pprint.pformat(device.find_parent('pci')['PCI_SLOT_NAME']))
        new_device_obj = {}
        # Get the device converted to a standard dict: (better for JSON sending)
        for item in device.items():
            new_device_obj[item[0]] = item[1]

        # Get the tags, if they are there:
        tags_from_device = list(device.tags)
        if len(tags_from_device) > 0:
            new_device_obj['TAGS'] = tags_from_device
        else:
            new_device_obj['TAGS'] = []

        #logger.debug('Udev Device Dict:\n%s' % pprint.pformat(new_device_obj))
        return new_device_obj

    def getCurrentUSBDevices(self, filter_subsystem='usb'):
        logger.debug('Getting current USB Devices...')
        finalObj = {}
        parsed_devices = []

        # Parse all USB Devices:
        for device in self.udev_context.list_devices(
                subsystem=filter_subsystem):
            new_device_obj = self.parseDeviceObj(device)
            parsed_devices.append(new_device_obj)

        # Prep for output:
        finalObj['current_devices'] = parsed_devices
        #logger.debug('Udev Devices Dict:\n%s' % pprint.pformat(finalObj))

        return finalObj
        # jEnc = json.JSONEncoder(skipkeys=True)
        # json_blob = jEnc.encode(finalObj)
        # logger.debug('Udev Devices JSON:\n%s' % pprint.pformat(json_blob))

    """
	Function: handleTask
	Description: handle download commands
	"""

    def handleTask(self, gccommand):
        #self.gcclient.log(GC_Utility.DEBUG, 'downloadFile : Sending result...');
        logger.debug('Sending result...')
        self.gcclient.sendResult(gccommand, response)

    def getModuleId(self):
        return self.MODULE_ID

    def quit(self):
        self.Running = False
        self.udev_observer.send_stop()
        return True
Beispiel #27
0
 def run(self):
     observer = MonitorObserver(monitor, self.udev_action)
     observer.daemon = True
     observer.start()
Beispiel #28
0
        if action == 'add':
            print('get a device')
            subprocess.call([DOWNLOAD_TOOL, DOWNLOAD_FILE])
            GPIO.output(BLUE_LED, GPIO.HIGH)
        elif action == 'remove':
            print('device is removed')
            GPIO.output(BLUE_LED, GPIO.LOW)
        
print('Auto download deamon')

context = Context()
monitor = Monitor.from_netlink(context)
monitor.filter_by(subsystem='block')
observer = MonitorObserver(monitor, device_event)

print('Start to detect usb mass storage')
observer.start()

try:
    while True:
        GPIO.output(GREEN_LED, GPIO.HIGH)
        sleep(1)
        GPIO.output(GREEN_LED, GPIO.LOW)
        sleep(1)
        
except Exception as e:
    print(e)
    print('exit')
    GPIO.cleanup()
    observer.stop()
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    ttyDeviceEvent = pyqtSignal(str)
    def __init__(self, *args, **kwargs):
        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
        self.setupUi(self)
        self.threadpool=QThreadPool()
        #Controller to manage Arduino
        self.arduinoController=arduinoController(self.threadpool)
        self.selectedPort=''
        #TODO conect arduinoController signals to MainWindow slots

        #levantamos el detector de coneccion/desconeccion
        self.context = Context()
        self.monitor = Monitor.from_netlink(self.context)
        self.monitor.filter_by(subsystem='tty')
        self.observer = MonitorObserver(self.monitor, callback=self.eventDetected, name='monitor-observer')
        self.observer.daemon
        self.observer.start()
        self.ttyDeviceEvent.connect(self.onTtyDeviceEvent)
        logger.info("MonitorObserver started")

        self.onLoadWindow()

    def onLoadWindow(self):
        portList=list_ports.comports()
        for port in portList:
            portAction = QtWidgets.QAction(port.device,self)
            portAction.setCheckable(True)
            self.menuPuertos.addAction(portAction)

        self.actionSeleccionarPuerto.setEnabled(False)
        self.enviarComando.clicked.connect(self.sendCommand)
        self.conectarArduino.setEnabled(False)

        self.menuPuertos.triggered.connect(self.onPortClicked)
        self.conectarArduino.triggered.connect(self.arduinoController.connectArduino)

    def sendCommand(self):
        text=self.comando.text()
        logger.debug("Enviando comando:"+text)

    def removePorts(self):
        logger.debug("TODO: Remove ports on arduinoEventDetected")
        self.checkConnection()

    @pyqtSlot(QtWidgets.QAction)
    def onPortClicked(self,port):
        logger.info('Port: {} - check status: {}'.format(port.text(),port.isChecked()))
        if port.isChecked():
            self.selectedPort=port.text()
            self.menuPuertos.setTitle('Puerto: {}'.format(self.selectedPort))
            for actionItem in self.menuPuertos.actions():
                if actionItem.text()!=self.selectedPort:
                    actionItem.setChecked(False)
        else:
            if self.selectedPort==port.text():
                self.selectedPort=""
                self.menuPuertos.setTitle('Puerto')
        logger.info('Selected port: {}'.format(self.selectedPort))


    @pyqtSlot(str)
    def onTtyDeviceEvent(self,action):
        if action =="added":
            portList=list_ports.comports()
            for port in portList:
                portAction = QtWidgets.QAction(port.device,self)
                portAction.setCheckable(True)
                isPresent = False;
                for actionItem in self.menuPuertos.actions():
                    if actionItem.text()==port.device:
                        logger.info("Port added already present")
                        isPresent=True
                if isPresent==False:
                    logger.info("New port added")
                    self.menuPuertos.addAction(portAction)
        elif action =="removed":
            logger.info("Do something on removed device")
            if self.arduinoController.isConnected()==False:
                logger.info("Arduino not conected")
                self.removePorts()
                portList=list_ports.comports()]\
                nothingSelected = True
                for port in portList:
                    portAction = QtWidgets.QAction(port.device,self)
                    portAction.setCheckable(True)
                    if self.selectedPort==port.device:
                        nothingSelected = False
                        logger.info("Reload selected port")
                        portAction.setChecked(True)
                    self.menuPuertos.addAction(portAction)
                if nothingSelected==True:
                    self.selectedPort=""
                    self.menuPuertos.setTitle('Puerto')
                    logger.info('Selected port: {}'.format(self.selectedPort))


    #Este evento se dispara en el MonitorObserver Thread
    def eventDetected(self,device):
        logger.info('Event detected - DEVICE: {0} - ACTION: {0.action}'.format(device))
        if device.action =="add":
            self.ttyDeviceEvent.emit("added")
        if device.action =="remove":
            self.ttyDeviceEvent.emit("removed")

    def removePorts(self):
        self.menuPuertos.clear()
        actionSeleccionarPuerto = QtWidgets.QAction("Seleccionar Puerto",self)
        actionSeleccionarPuerto.setEnabled(False)
        font = QtGui.QFont()
        actionSeleccionarPuerto.setFont(font)
        actionSeleccionarPuerto.setObjectName("actionSeleccionarPuerto")
        actionSeleccionarPuerto.setText("Seleccionar Puerto")
        self.menuPuertos.addAction(actionSeleccionarPuerto)
Beispiel #30
0
    def __init__(self, args: List[str]):
        """
        At the moment the very, very long initialization of the main window,
        setting up everything.

        :param default_path: Use a user defined path as entrypoint. If it's
                             empty, the home directory of the current user will
                             be used.
        :type default_path: str
        """
        super(tfm, self).__init__()
        self.setupUi(self)
        self.setWindowIcon(QIcon.fromTheme('system-file-manager'))

        self.clipboard = QApplication.clipboard()
        self.marked_to_cut = []

        self.back_stack = stack()
        self.forward_stack = stack()

        self.config_dir = os.path.join(
            QStandardPaths.writableLocation(
                QStandardPaths().ConfigLocation),
            type(self).__name__)

        self.current_path = utility.handle_args(args)
        self.default_path = self.current_path

        self.threadpool = QThreadPool()

        # MAIN VIEW #
        # set up QFileSystemModel
        self.filesystem = QFileSystemModel()
        self.filesystem.setRootPath(self.current_path)
        self.filesystem.setReadOnly(False)

        # connect QFileSystemModel to View
        self.table_view.setModel(self.filesystem)
        self.table_view.setRootIndex(
            self.filesystem.index(self.current_path))

        # set up header
        self.horizontal_header = self.table_view.horizontalHeader()
        self.horizontal_header.setSectionsMovable(True)
        # name
        self.horizontal_header.resizeSection(0, 200)
        # size
        self.horizontal_header.resizeSection(1, 100)
        # type
        self.horizontal_header.resizeSection(2, 100)

        # FS TREE #
        # create seperate FileSystemModel for the fs tree
        self.fs_tree_model = QFileSystemModel()
        self.fs_tree_model.setFilter(QDir.AllDirs | QDir.NoDotAndDotDot)
        self.fs_tree_model.setRootPath(QDir.rootPath())

        # connect model to view
        self.fs_tree.setModel(self.fs_tree_model)
        # hide unneeded columns
        for column in range(1, self.fs_tree.header().count()):
            self.fs_tree.hideColumn(column)
        # expand root item
        self.fs_tree.expand(self.fs_tree_model.index(0, 0))

        # BOOKMARKS #
        self.bookmarks = bm(path_to_bookmark_file=os.path.join(self.config_dir,
                                                               'bookmarks'))
        self.bookmark_view.setModel(self.bookmarks)

        # MOUNTS #
        self.udev_context = Context()
        self.mounts = mounts_model(context=self.udev_context)
        self.mounts_view.setModel(self.mounts)
        udev_monitor = Monitor.from_netlink(self.udev_context)
        udev_monitor.filter_by(subsystem='block', device_type='partition')
        udev_observer = MonitorObserver(udev_monitor,
                                        self.devices_changed)
        udev_observer.start()

        # STATUSBAR #
        # TODO: dir info
        self.item_info = QLabel()
        # self.dir_info = QLabel()
        self.part_info = QLabel()
        self.statusbar.addPermanentWidget(self.item_info)
        # self.statusbar.addPermanentWidget(self.dir_info)
        self.statusbar.addPermanentWidget(self.part_info)

        self.part_info.setText(utility.part_info(self.current_path))

        # TOOLBAR #
        # initially disable back/forward navigation
        self.action_back.setEnabled(False)
        self.action_forward.setEnabled(False)

        # main menu
        self.main_menu = QMenu()
        self.main_menu.addAction(self.action_show_hidden)

        self.menu_button = QToolButton()
        self.menu_button.setMenu(self.main_menu)
        self.menu_button.setPopupMode(QToolButton().InstantPopup)
        self.menu_button.setDefaultAction(self.action_menu)

        self.toolbar.insertWidget(self.action_back, self.menu_button)

        # adress bar
        self.adressbar = QLineEdit()
        self.adressbar.setText(self.current_path)
        self.toolbar.insertWidget(self.action_go, self.adressbar)

        # menu for new file or directory
        self.new_menu = QMenu()
        self.new_menu.addAction(self.action_new_dir)
        self.new_menu.addAction(self.action_new_file)

        self.new_button = QToolButton()
        self.new_button.setMenu(self.new_menu)
        self.new_button.setPopupMode(QToolButton().MenuButtonPopup)
        self.new_button.setDefaultAction(self.action_new_dir)

        self.toolbar.insertWidget(self.action_back, self.new_button)

        self.connect_actions_to_events()
        self.set_shortcuts()
        self.set_icons()
        self.set_context_menus()
Beispiel #31
0
class USB_ViewFilterWindow(Gtk.Window):

    def __init__(self):
        self.device_monitor = USB_ports(RunningMode.GTK)
        self.observer = MonitorObserver(self.device_monitor.monitor, callback =	self.refresh,
                                      name='monitor-observer')

        Gtk.Window.__init__(self, title = "USBGnomento")
 
        self.set_resizable(True)
        self.set_border_width(10)

        # Setting up the self.grid in which the elements are to be positionned
        self.grid = Gtk.Grid()
        self.grid.set_column_homogeneous(True)
        self.grid.set_row_homogeneous(True)
        self.add(self.grid)

        # Creating the ListStore model
        self.usb_list = Gtk.ListStore(str, bool, str, str, str)
       
        self.current_filter_usb = None
        # Creating the filter, feeding it with the usb_list model
        self.usb_filter = self.usb_list.filter_new()
        # Setting the filter function
        self.usb_filter.set_visible_func(self.usb_filter_func)

        self.treeview = Gtk.TreeView.new_with_model(self.usb_filter)

        col = Gtk.TreeViewColumn("Known Device", Gtk.CellRendererPixbuf(), stock_id = 0)
        self.treeview.append_column(col)

        for i, column_title in enumerate(["Connected", "DescriptorInfo", "Manufacturer", "Product"]):
            i = i + 1
            renderer = Gtk.CellRendererText()
            renderer.set_property('cell-background', 'grey')
            column = Gtk.TreeViewColumn(column_title, renderer, text=i)
            self.treeview.append_column(column)
	


        # Creating buttons to filter by device state, and setting up their events
        self.buttons = list()
        for usb_type in ["Connected Devices", "Known Devices", "Unknown Devices"]:
            button = Gtk.Button(usb_type)
            self.buttons.append(button)
            button.connect("clicked", self.on_selection_button_clicked)

        self.scrollable_treelist = Gtk.ScrolledWindow()
        self.scrollable_treelist.set_vexpand(True)
        self.grid.attach(self.scrollable_treelist, 0, 0, 8, 10)
 	
        # Write to know devices
        button = Gtk.Button("Write selected")
        self.buttons.append(button)
        button.connect("clicked", self.write_to_known_devices)

        # Remove trusted device
        button = Gtk.Button("Remove selected")
        self.buttons.append(button)
        button.connect("clicked", self.remove_from_known_devices)

        self.grid.attach_next_to(self.buttons[0], self.scrollable_treelist, Gtk.PositionType.BOTTOM, 1, 1)

        for i, button in enumerate(self.buttons[1:]):
            self.grid.attach_next_to(button, self.buttons[i], Gtk.PositionType.RIGHT, 1, 1)
        
        self.scrollable_treelist.add(self.treeview)


        self.first_populate_table()
        self.show_all()	
        self.observer.start()


    def first_populate_table(self):
        for device_id in self.device_monitor.known_devices.keys():

            if device_id in self.device_monitor.connected_devices.keys():
                self.usb_list.append([Gtk.STOCK_YES, True,
							self.device_monitor.known_devices[device_id][1],
                            self.device_monitor.known_devices[device_id][0]["Manufacturer"],
                            self.device_monitor.known_devices[device_id][0]["Product"]])

            else:
                self.usb_list.append([Gtk.STOCK_YES, False,
							self.device_monitor.known_devices[device_id][1],
							self.device_monitor.known_devices[device_id][0]["Manufacturer"],
							self.device_monitor.known_devices[device_id][0]["Product"]])
				

        for device_id in self.device_monitor.connected_devices.keys():
			
            if device_id not in self.device_monitor.known_devices.keys():
                print (self.device_monitor.connected_devices[device_id][1])
                self.usb_list.append([Gtk.STOCK_NO, True,
							 self.device_monitor.connected_devices[device_id][1],
                             self.device_monitor.connected_devices[device_id][0]["Manufacturer"],
                             self.device_monitor.connected_devices[device_id][0]["Product"]])
                

    # Write selected device to file
    # The device would be kept in a buffer until the program exits
    def write_to_known_devices(self, button):
        treeselection = self.treeview.get_selection()
        model, treeiter = treeselection.get_selected()
        device = {}

        if treeiter != None:

            if model[treeiter][0] == Gtk.STOCK_YES:
       	        return

            if model[treeiter][3]:
                device["Manufacturer"] = model[treeiter][3]

            if model[treeiter][4]:
                device["Product"] = model[treeiter][4]

            print(device["Product"])
            print(device["Manufacturer"])
            
            busnum, devnum = model[treeiter][2].split("\n")[0].split("Bus")[1].split("Address")
            devnum = devnum.split()[0]

            dev = usb.core.find(address=int(devnum), bus=int(busnum))

            dev_id = read_device.get_descriptors(dev)

            self.device_monitor.add_to_known_device(dev_id, device, dev)
            model.set_value(treeiter, 0, Gtk.STOCK_YES)


        else:
            dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.ERROR,
            Gtk.ButtonsType.CANCEL, "A USB device must be selected!")
            dialog.format_secondary_text("The selected USB device will be written to a 'know_hosts' file")
            dialog.run()
            
    # Remove selected device from file
    def remove_from_known_devices(self, button):
        treeselection = self.treeview.get_selection()
        model, treeiter = treeselection.get_selected()
        device = {}

        if treeiter != None:

             if model[treeiter][0] == Gtk.STOCK_NO:
       	          return

             if model[treeiter][3]:
                  device["Manufacturer"] = model[treeiter][2]

             if model[treeiter][4]:
                  device["Product"] = model[treeiter][3]
            
             busnum, devnum = model[treeiter][2].split("\n")[0].split("Bus")[1].split("Address")
             devnum = devnum.split()[0]

             dev = usb.core.find(address=int(devnum), bus=int(busnum))
             dev_id = read_device.get_descriptors(dev)

             self.device_monitor.known_devices.pop(dev_id)

             model.set_value(treeiter, 0, Gtk.STOCK_NO)


        else:

             dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.ERROR,
             Gtk.ButtonsType.CANCEL, "A USB device must be selected!")
            
             dialog.format_secondary_text("The selected USB device was removed")
             dialog.run()



    # Check new devices
    def refresh(self, device):
        treeselection = self.treeview.get_selection()
        model, treeiter = treeselection.get_selected()    


        if treeiter != None:
            index = (model.get_path(treeiter)).get_indices()[0]
       	
        action = device.action
        bus_id = device.sys_name


        if action == 'add':

            devnum = int(device.attributes.get("devnum"))
            busnum = int(device.attributes.get("busnum"))
			
            dev = usb.core.find(address=devnum, bus=busnum)

            dev_id = read_device.get_descriptors(dev)
            dev_name = read_device.get_device_name(device.attributes)

            self.device_monitor.add_connected_device(bus_id, dev_id, dev_name, dev)

            if dev_id not in self.device_monitor.known_devices.keys():
                self.usb_list.append([Gtk.STOCK_NO, True, str(dev), dev_name["Manufacturer"],
    				    dev_name["Product"]])
				
            else:
                self.usb_list.append([Gtk.STOCK_YES, True, str(dev), dev_name["Manufacturer"],
				    dev_name["Product"]])

        if action == 'remove':
            bus_id = self.device_monitor.remove_connected_device(dev)
            self.remove_from_usb_list(bus_id)
			
        if treeiter != None:
              self.treeview.set_cursor(index)
	
        return True
  

    # Remove one entry from the usb_list (to remove from the gtk tree)
    def remove_from_usb_list(self, bus_id):
        for entry in self.usb_list:
            if entry[2] == bus_id:
                entry.model.remove(entry.iter)
                break


	# Tests if the usb is connected, known device or unknown
    def usb_filter_func(self, model, iter, data):
        if self.current_filter_usb is None or self.current_filter_usb == "None":
            return True

        elif self.current_filter_usb == "Known Devices":
            return model[iter][0] == Gtk.STOCK_YES

        elif self.current_filter_usb == "Unknown Devices":
            return model[iter][0] == False

        else:
            return model[iter][1] == True


    # Called on any of the button clicks
    def on_selection_button_clicked(self, widget):
        self.current_filter_usb = widget.get_label()
        print("{} usb selected!".format(self.current_filter_usb))
        self.usb_filter.refilter()


    def quit_monitor(self):
        self.device_monitor.usb_monitor_stop()
        print("The know device list {}".format(self.device_monitor.known_devices))
class USB_Session_Blocker(dbus.service.Object):

    # Create context
    context = Context()

    # Create monitor
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb', device_type='usb_device')

    def __init__(self):

        try:
            with open(expanduser("~") + '/.local/share/trusted_devices', 'rt') as f_in:
                try:
                    self.trusted_devices = json.load(f_in)
                except ValueError:
                    self.trusted_devices = []
        
        except IOError:
            self.trusted_devices = []

        self.usb_blocker = dbus.SystemBus().get_object('org.gnome.USBBlocker', '/org/gnome/USBBlocker')
        self.notifier = dbus.SessionBus().get_object('org.freedesktop.Notifications', '/org/freedesktop/Notifications')
        self.observer = None
        self.number_notifications = {}

        self.allowed_devices = []
	bus_name = dbus.service.BusName('org.gnome.USBInhibit', bus=dbus.SessionBus())
        dbus.service.Object.__init__(self, bus_name, '/org/gnome/USBInhibit')


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
						in_signature='', out_signature='b')
    def get_status(self):
        return self.usb_blocker.get_dbus_method('get_status', 'org.gnome.USBBlocker.inhibit')()

	
    @dbus.service.method(dbus_interface='org.gnome.USBInhibit')
    def start_inhibit(self):
        self.notification = self.notifier.get_dbus_method('Notify', \
                    'org.freedesktop.Notifications')

        self.observer = MonitorObserver(self.monitor, callback = self.device_detected,
		                                      name='monitor-usb-session') 
    
        self.notifier.connect_to_signal('ActionInvoked', self.action_new_device)
        

        self.observer.daemon = True
        self.observer.start()

        print("Start monitoring Dbus session message")
        self.usb_blocker.get_dbus_method('start', 'org.gnome.USBBlocker.inhibit')()
                
    
    def action_new_device(self, id, action):
        if id in self.number_notifications:
            if action == "Allow":
                print "Allowed"
                bus_id, dev_id = self.number_notifications.pop(id)
                if self.usb_blocker.get_dbus_method('enable_device', 'org.gnome.USBBlocker.device')(bus_id, dev_id):
                    self.trusted_devices.append(dev_id)
                    self.write_trusted_devices()

                print (bus_id)
                print (dev_id)

            # If the action is Block then the device must remain blocked
            if action == "Block":
                print "Blocked"
        

    @dbus.service.method(dbus_interface='org.gnome.USBInhibit')
    def stop_inhibit(self):
        print("Stop monitoring Dbus session message")

        if self.observer != None:
           self.observer.stop()
           self.usb_blocker.get_dbus_method('stop', 'org.gnome.USBBlocker.inhibit')()


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='n', out_signature='')
    def add_nonblock_device(self, bDeviceClass):
        print ("Add device with the bDeviceClass code " + str(bDeviceClass))
        self.allowed_devices.append(bDeviceClass)

    
    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='n', out_signature='')
    def remove_nonblock_device(self, bDeviceClass):
        print ("Remove device with the bDeviceClass code " + str(bDeviceClass))
        if bDeviceClass in self.allowed_devices:
            self.allowed_devices.remove(bDeviceClass)


    @dbus.service.method(dbus_interface='org.gnome.USBInhibit', \
                                            in_signature='', out_signature='s')
    def show_nonblock_devices(self):
        return str(self.allowed_devices)


    def device_detected(self, device):
        import usb.core

        bus_id = device.sys_name
        action = device.action

        # Check only new connected devices to see if they are on an allowed list
        if action == 'add':
            print ("Device attached")
     
            devnum = int(device.attributes.get("devnum"))
            busnum = int(device.attributes.get("busnum"))
       
            dev = usb.core.find(address=devnum, bus=busnum)

            # Get the device unique id
            dev_id = read_device.get_descriptors(dev)

            if dev_id in self.trusted_devices:
                self.usb_blocker.get_dbus_method('enable_device', 'org.gnome.USBBlocker.device')(bus_id, dev_id)
                return

            if read_device.find_device(dev, list(usb.core.find(find_all = True,
                custom_match = read_device.custom_search(self.allowed_devices)))):

                print ("Device found on the non blocking list -- session")
                if self.usb_blocker.get_dbus_method('enable_device', 'org.gnome.USBBlocker.device')(bus_id, dev_id):
                    self.trusted_devices.append(dev_id)
                    self.write_trusted_devices()

                return


            id_notification = self.notification("USB-inhibitor",
                                                "0",
                                                "",
                                                "Unknown device connected",
                                                "An unknown device has been connected to the system. Do you want to allow it to connect?",
                                                ["Allow", "Connect", "Block", "Block"],
                                                {},
                                                5)

            self.number_notifications[id_notification] = [bus_id, dev_id]

            



    def write_trusted_devices(self):
        with open(expanduser("~") + '/.local/share/trusted_devices', 'wt') as f_out:
            json.dump(self.trusted_devices, f_out)
Beispiel #33
0
class RazerDaemon(DBusService):
    """
    Daemon class

    This class sets up the main run loop which serves DBus messages. The logger is initialised
    in this module as well as finding and initialising devices.

    Serves the following functions via DBus
    * getDevices - Returns a list of serial numbers
    * enableTurnOffOnScreensaver - Starts/Continues the run loop on the screensaver thread
    * disableTurnOffOnScreensaver - Pauses the run loop on the screensaver thread
    """

    BUS_PATH = 'org.razer'

    def __init__(self, verbose=False, log_dir=None, console_log=False, run_dir=None, config_file=None, test_dir=None):

        # Check if process exists
        exit_code = subprocess.call(['pgrep', 'razer-service'], stderr=subprocess.DEVNULL, stdout=subprocess.DEVNULL)

        if exit_code == 0:
            print("Daemon already exists. Please stop that one.", file=sys.stderr)
            exit(-1)

        setproctitle.setproctitle('razer-service')

        # Expanding ~ as python doesnt do it by default, also creating dirs if needed
        if log_dir is not None:
            log_dir = os.path.expanduser(log_dir)
            os.makedirs(log_dir, mode=0o750, exist_ok=True)
        if run_dir is not None:
            run_dir = os.path.expanduser(run_dir)
            os.makedirs(run_dir, mode=0o750, exist_ok=True)
        if config_file is not None:
            config_file = os.path.expanduser(config_file)
            os.makedirs(os.path.dirname(config_file), mode=0o750, exist_ok=True)

        self._test_dir = test_dir
        self._data_dir = run_dir
        self._config_file = config_file
        self._config = configparser.ConfigParser()
        self.read_config(config_file)

        # Setup DBus to use gobject main loop
        dbus.mainloop.glib.threads_init()
        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
        DBusService.__init__(self, self.BUS_PATH, '/org/razer')

        self._init_signals()
        self._main_loop = GObject.MainLoop()

        # Listen for input events from udev
        self._udev_context = Context()
        udev_monitor = Monitor.from_netlink(self._udev_context)
        udev_monitor.filter_by(subsystem='input')
        self._udev_observer = MonitorObserver(udev_monitor, callback=self._udev_input_event, name='device-monitor')

        # Logging
        logging_level = logging.INFO
        if verbose or self._config.getboolean('General', 'verbose_logging'):
            logging_level = logging.DEBUG

        self.logger = logging.getLogger('razer')
        self.logger.setLevel(logging_level)
        formatter = logging.Formatter('%(asctime)s | %(name)-30s | %(levelname)-8s | %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
        # Dont propagate to default logger
        self.logger.propagate = 0

        if console_log:
            console_logger = logging.StreamHandler()
            console_logger.setLevel(logging_level)
            console_logger.setFormatter(formatter)
            self.logger.addHandler(console_logger)

        if log_dir is not None:
            log_file = os.path.join(log_dir, 'razer.log')
            file_logger = logging.handlers.RotatingFileHandler(log_file, maxBytes=16777216, backupCount=10) # 16MiB
            file_logger.setLevel(logging_level)
            file_logger.setFormatter(formatter)
            self.logger.addHandler(file_logger)

        self.logger.info("Initialising Daemon (v%s). Pid: %d", __version__, os.getpid())

        # Setup screensaver thread
        self._screensaver_thread = ScreensaverThread(self, active=self._config.getboolean('Startup', 'devices_off_on_screensaver'))
        self._screensaver_thread.start()

        self._razer_devices = DeviceCollection()
        self._load_devices(first_run=True)

        # Add DBus methods
        self.logger.info("Adding razer.devices.getDevices method to DBus")
        self.add_dbus_method('razer.devices', 'getDevices', self.get_serial_list, out_signature='as')
        self.logger.info("Adding razer.devices.enableTurnOffOnScreensaver method to DBus")
        self.add_dbus_method('razer.devices', 'enableTurnOffOnScreensaver', self.enable_turn_off_on_screensaver)
        self.logger.info("Adding razer.devices.disableTurnOffOnScreensaver method to DBus")
        self.add_dbus_method('razer.devices', 'disableTurnOffOnScreensaver', self.disable_turn_off_on_screensaver)
        self.logger.info("Adding razer.devices.syncEffects method to DBus")
        self.add_dbus_method('razer.devices', 'syncEffects', self.sync_effects, in_signature='b')
        self.logger.info("Adding razer.daemon.version method to DBus")
        self.add_dbus_method('razer.daemon', 'version', self.version, out_signature='s')
        self.logger.info("Adding razer.daemon.stop method to DBus")
        self.add_dbus_method('razer.daemon', 'stop', self.stop)

        # TODO remove
        self.sync_effects(self._config.getboolean('Startup', 'sync_effects_enabled'))
        # TODO ======

    def _init_signals(self):
        """
        Heinous hack to properly handle signals on the mainloop. Necessary
        if we want to use the mainloop run() functionality.
        """
        def signal_action(signum):
            """
            Action to take when a signal is trapped
            """
            self.quit(signum)

        def idle_handler():
            """
            GLib idle handler to propagate signals
            """
            GLib.idle_add(signal_action, priority=GLib.PRIORITY_HIGH)

        def handler(*args):
            """
            Unix signal handler
            """
            signal_action(args[0])

        def install_glib_handler(sig):
            """
            Choose a compatible method and install the handler
            """
            unix_signal_add = None

            if hasattr(GLib, "unix_signal_add"):
                unix_signal_add = GLib.unix_signal_add
            elif hasattr(GLib, "unix_signal_add_full"):
                unix_signal_add = GLib.unix_signal_add_full

            if unix_signal_add:
                unix_signal_add(GLib.PRIORITY_HIGH, sig, handler, sig)
            else:
                print("Can't install GLib signal handler!")

        for sig in signal.SIGINT, signal.SIGTERM, signal.SIGHUP:
            signal.signal(sig, idle_handler)
            GLib.idle_add(install_glib_handler, sig, priority=GLib.PRIORITY_HIGH)

    def read_config(self, config_file):
        """
        Read in the config file and set the defaults

        :param config_file: Config file
        :type config_file: str or None
        """
        # Generate sections as trying to access a value even if a default exists will die if the section does not
        for section in ('General', 'Startup', 'Statistics'):
            self._config[section] = {}

        self._config['DEFAULT'] = {
            'verbose_logging': True,
            'sync_effects_enabled': True,
            'devices_off_on_screensaver': True,
            'key_statistics': False,
        }

        if config_file is not None and os.path.exists(config_file):
            self._config.read(config_file)

    def enable_turn_off_on_screensaver(self):
        """
        Enable the turning off of devices when the screensaver is active
        """
        self._screensaver_thread.active = True

    def disable_turn_off_on_screensaver(self):
        """
        Disable the turning off of devices when the screensaver is active
        """
        self._screensaver_thread.active = False

    def version(self):
        """
        Get the daemon version

        :return: Version string
        :rtype: str
        """
        return __version__

    def suspend_devices(self):
        """
        Suspend all devices
        """
        for device in self._razer_devices:
            device.dbus.suspend_device()

    def resume_devices(self):
        """
        Resume all devices
        """
        for device in self._razer_devices:
            device.dbus.resume_device()

    def get_serial_list(self):
        """
        Get list of devices serials
        """
        serial_list = self._razer_devices.serials()
        self.logger.debug('DBus called get_serial_list')
        return serial_list

    def sync_effects(self, enabled):
        """
        Sync the effects across the devices

        :param enabled: True to sync effects
        :type enabled: bool
        """
        # Todo perhaps move logic to device collection
        for device in self._razer_devices.devices:
            device.dbus.effect_sync = enabled

    def _load_devices(self, first_run=False):
        """
        Go through supported devices and load them

        Loops through the available hardware classes, loops through
        each device in the system and adds it if needs be.
        """
        classes = razer_daemon.hardware.get_device_classes()

        if first_run:
            # Just some pretty output
            max_name_len = max([len(cls.__name__) for cls in classes]) + 2
            for cls in classes:
                format_str = 'Loaded device specification: {0:-<' + str(max_name_len) + '} ({1:04x}:{2:04X})'

                self.logger.debug(format_str.format(cls.__name__ + ' ', cls.USB_VID, cls.USB_PID))

        for device in self._udev_context.list_devices(subsystem='hid'):
            device_number = 0

            for device_class in classes:
                if device.sys_name in self._razer_devices:
                    continue

                if device_class.match(device.sys_name, device.parent.sys_path):  # Check it matches sys/ ID format and has device_type file
                    self.logger.info('Found device.%d: %s', device_number, device.sys_name)
                    razer_device = device_class(device.sys_path, device_number, self._config, testing=self._test_dir is not None)

                    # Wireless devices sometimes dont listen
                    count = 0
                    while count < 3:
                        # Loop to get serial, exit early if it gets one
                        device_serial = razer_device.get_serial()
                        if len(device_serial) > 0:
                            break
                        count += 1
                    else:
                        logging.warning("Could not get serial for device {0}. Skipping".format(device.sys_name))
                        continue

                    self._razer_devices.add(device.sys_name, device_serial, razer_device)

                    device_number += 1

    def _remove_devices(self):
        """
        Go through the list of current devices and if they no longer exist then remove them
        """
        hid_devices = [dev.sys_name for dev in self._udev_context.list_devices(subsystem='hid')]
        devices_to_remove = [dev for dev in self._razer_devices if dev not in hid_devices]
        for device in devices_to_remove:
            if self._test_dir is not None:
                # Remove from DBus
                device.dbus.remove_from_connection()

            # Remove device
            self.logger.warning("Device %s is missing. Removing from DBus", device.device_id)
            del self._razer_devices[device.device_id]

    def _udev_input_event(self, device):
        self.logger.debug('Device event [%s]: %s', device.action, device.device_path)
        if device.action == 'add':
            self._load_devices()
        elif device.action == 'remove':
            self._remove_devices()

    def run(self):
        """
        Run the daemon
        """
        self.logger.info('Serving DBus')

        # Start listening for device changes
        self._udev_observer.start()

        # Start the mainloop
        try:
            self._main_loop.run()
        except KeyboardInterrupt:
            self.logger.debug('Shutting down')

    def stop(self):
        """
        Wrapper for quit
        """
        self.quit(None)

    def quit(self, signum):
        """
        Quit by stopping the main loop, observer, and screensaver thread
        """
        # pylint: disable=unused-argument
        if signum is None:
            self.logger.info('Stopping daemon.')
        else:
            self.logger.info('Stopping daemon on signal %d', signum)

        self._main_loop.quit()

        # Stop udev monitor
        self._udev_observer.send_stop()

        # Stop screensaver
        self._screensaver_thread.shutdown = True
        self._screensaver_thread.join(timeout=2)
        if self._screensaver_thread.is_alive():
            self.logger.warning('Could not stop the screensaver thread')

        for device in self._razer_devices:
            device.dbus.close()
Beispiel #34
0
class DiskManager(object):
    """ Disk manager utility class """

    def __init__(self, peppy):
        """ Initializer. 
        
        :param peppy: main player class
        """
        self.peppy = peppy
        self.context = Context()
        config = peppy.util.config
        self.read_only = config[DISK_MOUNT][MOUNT_READ_ONLY]
        self.mount_point_base = config[DISK_MOUNT][MOUNT_POINT].strip()
        self.mount_options = config[DISK_MOUNT][MOUNT_OPTIONS].strip().replace(" ", "")
        if not self.mount_point_base.endswith(os.sep):
            self.mount_point_base += os.sep    
        self.disk_index = 0
        self.observer = None

    def get_mount_point(self, device_name):
        """ Get the device mount point (if any)

        :param device_name: the device name e.g. /dev/sda1

        :return: the mount point or None
        """
        try:
            command = f"findmnt -n -S {device_name} -o TARGET"
            return check_output(command.split()).decode(UTF8).rstrip("\n")
        except CalledProcessError as e:
            logging.debug(e)
            return None

    def get_usb_disks(self):
        """ Get the list of dictionaries representing each connected disk

        :return: list of connected disks with such properties as label, device name etc.
        """
        disks = []
        for device in self.context.list_devices(subsystem='block', DEVTYPE='partition'):
            if device.get('ID_BUS') and device.get('ID_BUS') == 'usb':
                props = self.get_device_properties(device)
                if props:
                    disks.append(props)

        return disks

    def get_device_properties(self, device):
        """ Get only required properties from the device object

        :param device: the device object

        :return: the dictionary with required properties
        """
        if not device:
            return None

        props = {}

        if device.get('ID_FS_LABEL_ENC'):
            props[PROPERTY_NAME] = self.clean_string(device.get('ID_FS_LABEL_ENC'))
        else:
            self.disk_index += 1
            props[PROPERTY_NAME] = BASE_NAME + str(self.disk_index)

        props[PROPERTY_UUID] = self.clean_string(device.get('ID_FS_UUID_ENC'))
        props[PROPERTY_DEVICE_NAME] = device.get('DEVNAME')
        props[PROPERTY_VENDOR] = device.get('ID_VENDOR')
        props[PROPERTY_MODEL] = self.clean_string(device.get('ID_MODEL_ENC'))
        props[PROPERTY_FILESYSTEM_TYPE] = device.get('ID_FS_TYPE')

        mount_point = self.get_mount_point(props[PROPERTY_DEVICE_NAME])

        if mount_point != None:
            props[PROPERTY_MOUNT_POINT] = self.get_mount_point(props[PROPERTY_DEVICE_NAME])
            props[PROPERTY_MOUNTED] = True
        else:
            props[PROPERTY_MOUNT_POINT] = ""
            props[PROPERTY_MOUNTED] = False

        return props

    def clean_string(self, s):
        """ Clean input string - replace space code by space and trim

        :param s: the input string

        :return: the processed string
        """
        return s.replace(SPACE_CODE, SPACE).strip()

    def mount(self, device_properties):
        """ Mount device

        :param device_properties: the dictionary of the properties of the device to mount

        :return: True - disk mount was successful, False - otherwise
        """
        device_name = device_properties[PROPERTY_DEVICE_NAME]
        existing_mount_point = device_properties[PROPERTY_MOUNT_POINT]
        label = device_properties[PROPERTY_NAME]
        mounted = device_properties[PROPERTY_MOUNTED]

        if mounted:
            logging.debug(f"Device {device_name} mounted already to {existing_mount_point}")
            return True

        mount_point = self.mount_point_base + label

        if os.path.ismount(mount_point):
            logging.debug(f"The mount point {mount_point} is in use already")
            return False

        if os.path.exists(mount_point):
            logging.debug(f"The mount point {mount_point} exists")
        else:
            try:
                os.makedirs(mount_point)
            except Exception as e:
                logging.debug(e)
                return False

        if self.read_only:
            command = "sudo mount -o ro".split()
        else:
            command = "sudo mount".split()

        if self.mount_options:
            command.append("-o")
            command.append(self.mount_options)

        command.append(device_name);
        command.append(mount_point);

        p = Popen(command, stdout=PIPE, stderr=PIPE)
        _, error = p.communicate()
        if p.returncode != 0:
            logging.debug(f"Mount failed with error: {error.decode(UTF8).rstrip(EOL)}")
            logging.debug(f"Failed mount command: {command}")
            return False
        else:
            logging.debug(f"Successfully mounted {device_name} to {mount_point}")
            return True

    def unmount(self, device_properties):
        """ Unmount device

        :param device_properties: the dictionary of the properties of the device to unmount

        :return: True - disk unmount was successful, False - otherwise
        """
        device_name = device_properties[PROPERTY_DEVICE_NAME]
        p = Popen(["sudo", "umount", device_name], stdout=PIPE, stderr=PIPE)
        _, error = p.communicate()
        if p.returncode != 0:
            logging.debug(f"Unmount failed with error: {error.decode(UTF8).rstrip(EOL)}")
            return False
        else:
            logging.debug(f"Successfully unmounted {device_name}")
            return True

    def poweroff(self, device_properties):
        """ Poweroff provided device. 
        If device is busy switch off player, go to Home, umnount and poweroff

        :param device_properties: the dictionary of the properties of the device to poweroff

        :return: True - disk poweroff was successful, False - otherwise
        """
        device_name = device_properties[PROPERTY_DEVICE_NAME]
        mounted = self.get_mount_point(device_name)
        if mounted:
            unmounted = self.unmount(device_properties)    
            if not unmounted:
                self.peppy.player.stop()
                self.peppy.go_home(None)
                self.unmount(device_properties)
        try:
            p = Popen(["sudo", "udisksctl", "power-off", "-b", device_name], stdout=PIPE, stderr=PIPE)
            _, error = p.communicate()
            if p.returncode != 0:
                logging.debug(f"Poweroff failed with error: {error.decode(UTF8).rstrip(EOL)}")
                return False
            else:
                logging.debug(f"Poweroff successful for device {device_name}")
                return True
        except Exception as e:
            logging.debug(e)  

    def mount_all_usb_disks(self):
        """ Mount all USB disks found in the system """

        disks = self.get_usb_disks()
        for d in disks:
            self.mount(d)

    def unmount_all_usb_disks(self):
        """ Unmount all USB disks found in the system """

        disks = self.get_usb_disks()
        for d in disks:
            self.unmount(d)

    def poweroff_all_usb_disks(self):
        """ Poweroff all USB disks found in the system """

        disks = self.get_usb_disks()
        for d in disks:
            self.poweroff(d)

    def usb_event_handler(self, device):
        """ Handle USB plug/unplug events

        :param device: the plugged/unplugged USB device 
        """
        if device and device.get('ID_BUS') and device.get('ID_BUS') == 'usb':
            device_properties = self.get_device_properties(device)
            if device.action == "add":
                self.mount(device_properties)
            elif device.action == "remove":
                unmounted = self.unmount(device_properties)    
                if not unmounted:
                    self.peppy.player.stop()
                    title_screen_name = self.peppy.get_title_screen_name()
                    self.peppy.stop_player_timer_thread(title_screen_name)
                    if self.peppy.is_player_screen():
                        self.peppy.go_home(None)
                        self.peppy.web_server.redraw_web_ui()
                    self.unmount(device_properties)

    def start_observer(self):
        """ Start plug/unplug event observer """

        monitor = Monitor.from_netlink(self.context)
        monitor.filter_by(subsystem="block", device_type="partition")
        self.observer = MonitorObserver(monitor, callback=self.usb_event_handler)
        self.observer.start()
        logging.debug("Started USB drive plug/unplug observer")
Beispiel #35
0
class RazerDaemon(DBusService):
    """
    Daemon class

    This class sets up the main run loop which serves DBus messages. The logger is initialised
    in this module as well as finding and initialising devices.

    Serves the following functions via DBus
    * getDevices - Returns a list of serial numbers
    * enableTurnOffOnScreensaver - Starts/Continues the run loop on the screensaver thread
    * disableTurnOffOnScreensaver - Pauses the run loop on the screensaver thread
    """

    BUS_NAME = 'org.razer'

    def __init__(self,
                 verbose=False,
                 log_dir=None,
                 console_log=False,
                 run_dir=None,
                 config_file=None,
                 test_dir=None):

        setproctitle.setproctitle('openrazer-daemon')  # pylint: disable=no-member

        # Expanding ~ as python doesn't do it by default, also creating dirs if needed
        try:
            if log_dir is not None:
                log_dir = os.path.expanduser(log_dir)
                os.makedirs(log_dir, exist_ok=True)
            if run_dir is not None:
                run_dir = os.path.expanduser(run_dir)
                os.makedirs(run_dir, exist_ok=True)
        except NotADirectoryError as e:
            print("Failed to create {}".format(e.filename), file=sys.stderr)
            sys.exit(1)

        if config_file is not None:
            config_file = os.path.expanduser(config_file)
            if not os.path.exists(config_file):
                print("Config file {} does not exist.".format(config_file),
                      file=sys.stderr)
                sys.exit(1)

        self._test_dir = test_dir
        self._run_dir = run_dir
        self._config_file = config_file
        self._config = configparser.ConfigParser()
        self.read_config(config_file)

        # Logging
        log_level = logging.INFO
        if verbose or self._config.getboolean('General', 'verbose_logging'):
            log_level = logging.DEBUG
        self.logger = self._create_logger(log_dir, log_level, console_log)

        # Check for plugdev group
        if not self._check_plugdev_group():
            self.logger.critical("User is not a member of the plugdev group")
            sys.exit(1)

        # Setup DBus to use gobject main loop
        dbus.mainloop.glib.threads_init()
        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
        DBusService.__init__(self, self.BUS_NAME, '/org/razer')

        self._init_signals()
        self._main_loop = GLib.MainLoop()

        # Listen for input events from udev
        self._init_udev_monitor()

        # Load Classes
        self._device_classes = openrazer_daemon.hardware.get_device_classes()

        self.logger.info("Initialising Daemon (v%s). Pid: %d", __version__,
                         os.getpid())
        self._init_screensaver_monitor()

        self._razer_devices = DeviceCollection()
        self._load_devices(first_run=True)

        # Add DBus methods
        methods = {
            # interface, method, callback, in-args, out-args
            ('razer.devices', 'getDevices', self.get_serial_list, None, 'as'),
            ('razer.devices', 'supportedDevices', self.supported_devices, None,
             's'),
            ('razer.devices', 'enableTurnOffOnScreensaver',
             self.enable_turn_off_on_screensaver, 'b', None),
            ('razer.devices', 'getOffOnScreensaver',
             self.get_off_on_screensaver, None, 'b'),
            ('razer.devices', 'syncEffects', self.sync_effects, 'b', None),
            ('razer.devices', 'getSyncEffects', self.get_sync_effects, None,
             'b'),
            ('razer.daemon', 'version', self.version, None, 's'),
            ('razer.daemon', 'stop', self.stop, None, None),
        }

        for m in methods:
            self.logger.debug("Adding {}.{} method to DBus".format(m[0], m[1]))
            self.add_dbus_method(m[0],
                                 m[1],
                                 m[2],
                                 in_signature=m[3],
                                 out_signature=m[4])

        self._collecting_udev = False
        self._collecting_udev_devices = []

        # TODO remove
        self.sync_effects(
            self._config.getboolean('Startup', 'sync_effects_enabled'))
        # TODO ======

    @dbus.service.signal('razer.devices')
    def device_removed(self):
        self.logger.debug("Emitted Device Remove Signal")

    @dbus.service.signal('razer.devices')
    def device_added(self):
        self.logger.debug("Emitted Device Added Signal")

    def _create_logger(self, log_dir, log_level, want_console_log):
        """
        Initializes a logger and returns it.

        :param log_dir: If not None, specifies the directory to create the
        log file in
        :param log_level: The log level of messages to print
        :param want_console_log: True if we should print to the console

        :rtype:logging.Logger
        """
        logger = logging.getLogger('razer')
        logger.setLevel(log_level)
        formatter = logging.Formatter(
            '%(asctime)s | %(name)-30s | %(levelname)-8s | %(message)s',
            datefmt='%Y-%m-%d %H:%M:%S')
        # Don't propagate to default logger
        logger.propagate = 0

        if want_console_log:
            console_logger = logging.StreamHandler()
            console_logger.setLevel(log_level)
            console_logger.setFormatter(formatter)
            logger.addHandler(console_logger)

        if log_dir is not None:
            log_file = os.path.join(log_dir, 'razer.log')
            file_logger = logging.handlers.RotatingFileHandler(
                log_file, maxBytes=16777216, backupCount=10)  # 16MiB
            file_logger.setLevel(log_level)
            file_logger.setFormatter(formatter)
            logger.addHandler(file_logger)

        return logger

    def _check_plugdev_group(self):
        """
        Check if the user is a member of the plugdev group. For the root
        user, this always returns True

        :rtype: bool
        """
        if getpass.getuser() == 'root':
            return True

        try:
            return grp.getgrnam('plugdev').gr_gid in os.getgroups()
        except KeyError:
            pass

        return False

    def _init_udev_monitor(self):
        self._udev_context = Context()
        udev_monitor = Monitor.from_netlink(self._udev_context)
        udev_monitor.filter_by(subsystem='hid')
        self._udev_observer = MonitorObserver(udev_monitor,
                                              callback=self._udev_input_event,
                                              name='device-monitor')

    def _init_screensaver_monitor(self):
        try:
            self._screensaver_monitor = ScreensaverMonitor(self)
            self._screensaver_monitor.monitoring = self._config.getboolean(
                'Startup', 'devices_off_on_screensaver')
        except dbus.exceptions.DBusException as e:
            self.logger.error(
                "Failed to init ScreensaverMonitor: {}".format(e))

    def _init_signals(self):
        """
        Heinous hack to properly handle signals on the mainloop. Necessary
        if we want to use the mainloop run() functionality.
        """
        def signal_action(signum):
            """
            Action to take when a signal is trapped
            """
            self.quit(signum)

        def idle_handler():
            """
            GLib idle handler to propagate signals
            """
            GLib.idle_add(signal_action, priority=GLib.PRIORITY_HIGH)

        def handler(*args):
            """
            Unix signal handler
            """
            signal_action(args[0])

        def install_glib_handler(sig):
            """
            Choose a compatible method and install the handler
            """
            unix_signal_add = None

            if hasattr(GLib, "unix_signal_add"):
                unix_signal_add = GLib.unix_signal_add
            elif hasattr(GLib, "unix_signal_add_full"):
                unix_signal_add = GLib.unix_signal_add_full

            if unix_signal_add:
                unix_signal_add(GLib.PRIORITY_HIGH, sig, handler, sig)
            else:
                print("Can't install GLib signal handler!")

        for sig in signal.SIGINT, signal.SIGTERM, signal.SIGHUP:
            signal.signal(sig, idle_handler)
            GLib.idle_add(install_glib_handler,
                          sig,
                          priority=GLib.PRIORITY_HIGH)

    def read_config(self, config_file):
        """
        Read in the config file and set the defaults

        :param config_file: Config file
        :type config_file: str or None
        """
        # Generate sections as trying to access a value even if a default exists will die if the section does not
        for section in ('General', 'Startup', 'Statistics'):
            self._config[section] = {}

        self._config['DEFAULT'] = {
            'verbose_logging': True,
            'sync_effects_enabled': True,
            'devices_off_on_screensaver': True,
            'key_statistics': False,
        }

        if config_file is not None and os.path.exists(config_file):
            self._config.read(config_file)

    def get_off_on_screensaver(self):
        """
        Returns if turn off on screensaver

        :return: Result
        :rtype: bool
        """
        return self._screensaver_monitor.monitoring

    def enable_turn_off_on_screensaver(self, enable):
        """
        Enable the turning off of devices when the screensaver is active
        """
        self._screensaver_monitor.monitoring = enable

    def supported_devices(self):
        result = {
            cls.__name__: (cls.USB_VID, cls.USB_PID)
            for cls in self._device_classes
        }

        return json.dumps(result)

    def version(self):
        """
        Get the daemon version

        :return: Version string
        :rtype: str
        """
        return __version__

    def suspend_devices(self):
        """
        Suspend all devices
        """
        for device in self._razer_devices:
            device.dbus.suspend_device()

    def resume_devices(self):
        """
        Resume all devices
        """
        for device in self._razer_devices:
            device.dbus.resume_device()

    def get_serial_list(self):
        """
        Get list of devices serials
        """
        serial_list = self._razer_devices.serials()
        self.logger.debug('DBus called get_serial_list')
        return serial_list

    def sync_effects(self, enabled):
        """
        Sync the effects across the devices

        :param enabled: True to sync effects
        :type enabled: bool
        """
        # Todo perhaps move logic to device collection
        for device in self._razer_devices.devices:
            device.dbus.effect_sync = enabled

    def get_sync_effects(self):
        """
        Sync the effects across the devices

        :return: True if any devices sync effects
        :rtype: bool
        """
        result = False

        for device in self._razer_devices.devices:
            result |= device.dbus.effect_sync

        return result

    def _load_devices(self, first_run=False):
        """
        Go through supported devices and load them

        Loops through the available hardware classes, loops through
        each device in the system and adds it if needs be.
        """
        if first_run:
            # Just some pretty output
            max_name_len = max(
                [len(cls.__name__) for cls in self._device_classes]) + 2
            for cls in self._device_classes:
                format_str = 'Loaded device specification: {0:-<' + str(
                    max_name_len) + '} ({1:04x}:{2:04X})'

                self.logger.debug(
                    format_str.format(cls.__name__ + ' ', cls.USB_VID,
                                      cls.USB_PID))

        if self._test_dir is not None:
            device_list = os.listdir(self._test_dir)
            test_mode = True
        else:
            device_list = list(
                self._udev_context.list_devices(subsystem='hid'))
            test_mode = False

        device_number = 0
        for device in device_list:

            for device_class in self._device_classes:
                # Interoperability between generic list of 0000:0000:0000.0000 and pyudev
                if test_mode:
                    sys_name = device
                    sys_path = os.path.join(self._test_dir, device)
                else:
                    sys_name = device.sys_name
                    sys_path = device.sys_path

                if sys_name in self._razer_devices:
                    continue

                if device_class.match(
                        sys_name, sys_path
                ):  # Check it matches sys/ ID format and has device_type file
                    self.logger.info('Found device.%d: %s', device_number,
                                     sys_name)

                    # TODO add testdir support
                    # Basically find the other usb interfaces
                    device_match = sys_name.split('.')[0]
                    additional_interfaces = []
                    if not test_mode:
                        for alt_device in device_list:
                            if device_match in alt_device.sys_name and alt_device.sys_name != sys_name:
                                additional_interfaces.append(
                                    alt_device.sys_path)

                    # Checking permissions
                    test_file = os.path.join(sys_path, 'device_type')
                    file_group_id = os.stat(test_file).st_gid
                    file_group_name = grp.getgrgid(file_group_id)[0]

                    if os.getgid(
                    ) != file_group_id and file_group_name != 'plugdev':
                        self.logger.critical(
                            "Could not access {0}/device_type, file is not owned by plugdev"
                            .format(sys_path))
                        break

                    razer_device = device_class(
                        sys_path,
                        device_number,
                        self._config,
                        testing=self._test_dir is not None,
                        additional_interfaces=sorted(additional_interfaces))

                    # Wireless devices sometimes don't listen
                    count = 0
                    while count < 3:
                        # Loop to get serial, exit early if it gets one
                        device_serial = razer_device.get_serial()
                        if len(device_serial) > 0:
                            break
                        time.sleep(0.1)
                        count += 1
                    else:
                        logging.warning(
                            "Could not get serial for device {0}. Skipping".
                            format(sys_name))
                        continue

                    self._razer_devices.add(sys_name, device_serial,
                                            razer_device)

                    device_number += 1

    def _add_device(self, device):
        """
        Add device event from udev

        :param device: Udev Device
        :type device: pyudev.device._device.Device
        """
        device_number = len(self._razer_devices)
        for device_class in self._device_classes:
            sys_name = device.sys_name
            sys_path = device.sys_path

            if sys_name in self._razer_devices:
                continue

            if device_class.match(
                    sys_name, sys_path
            ):  # Check it matches sys/ ID format and has device_type file
                self.logger.info('Found valid device.%d: %s', device_number,
                                 sys_name)
                razer_device = device_class(sys_path,
                                            device_number,
                                            self._config,
                                            testing=self._test_dir is not None)

                # Its a udev event so currently the device hasn't been chmodded yet
                time.sleep(0.2)

                # Wireless devices sometimes don't listen
                device_serial = razer_device.get_serial()

                if len(device_serial) > 0:
                    # Add Device
                    self._razer_devices.add(sys_name, device_serial,
                                            razer_device)
                    self.device_added()
                else:
                    logging.warning(
                        "Could not get serial for device {0}. Skipping".format(
                            sys_name))
            else:
                # Basically find the other usb interfaces
                device_match = sys_name.split('.')[0]
                for d in self._razer_devices:
                    if device_match in d.device_id and d.device_id != sys_name:
                        if not sys_path in d.dbus.additional_interfaces:
                            d.dbus.additional_interfaces.append(sys_path)
                            return

    def _remove_device(self, device):
        """
        Remove device event from udev

        :param device: Udev Device
        :type device: pyudev.device._device.Device
        """
        device_id = device.sys_name

        try:
            device = self._razer_devices[device_id]

            device.dbus.close()
            device.dbus.remove_from_connection()
            self.logger.warning("Removing %s", device_id)

            # Delete device
            del self._razer_devices[device.device_id]
            self.device_removed()

        except IndexError:  # Why didn't i set it up as KeyError
            # It will return "extra" events for the additional usb interfaces bound to the driver
            pass

    def _udev_input_event(self, device):
        """
        Function called by the Udev monitor (#observerPattern)

        :param device: Udev device
        :type device: pyudev.device._device.Device
        """
        self.logger.debug('Device event [%s]: %s', device.action,
                          device.device_path)
        if device.action == 'add':
            if self._collecting_udev:
                self._collecting_udev_devices.append(device)
                return
            else:
                self._collecting_udev_devices = [device]
                self._collecting_udev = True
                t = threading.Thread(target=self._collecting_udev_method,
                                     args=(device, ))
                t.start()
        elif device.action == 'remove':
            self._remove_device(device)

    def _collecting_udev_method(self, device):
        time.sleep(2)  # delay to let udev add all devices that we want
        # Sort the devices
        self._collecting_udev_devices.sort(key=lambda x: x.sys_path,
                                           reverse=True)
        for d in self._collecting_udev_devices:
            self._add_device(d)
        self._collecting_udev = False

    def run(self):
        """
        Run the daemon
        """
        self.logger.info('Serving DBus')

        # Start listening for device changes
        self._udev_observer.start()

        # Start the mainloop
        try:
            self._main_loop.run()
        except KeyboardInterrupt:
            self.logger.debug('Shutting down')

    def stop(self):
        """
        Wrapper for quit
        """
        self.quit(None)

    def quit(self, signum):
        """
        Quit by stopping the main loop, observer, and screensaver thread
        """
        # pylint: disable=unused-argument
        if signum is None:
            self.logger.info('Stopping daemon.')
        else:
            self.logger.info('Stopping daemon on signal %d', signum)

        self._main_loop.quit()

        # Stop udev monitor
        self._udev_observer.send_stop()

        for device in self._razer_devices:
            device.dbus.close()
Beispiel #36
0
class USB_inhibit:

    # Create context
    context = Context()

    # Create monitor
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb', device_type='usb_device')

    name_device = ["Manufacturer", "Product"]

    MASS_STORAGE = 0x8
    HID = 0x03
    AUDIO = 0x01
    VIDEO = 0x0E

    device_class_nonblock = [0x09]  # Allow USB hubs to connect

    # Class initializer
    def __init__(self, flag_known_devices):
        # Devices that where connected when the usb_inhibit started
        # -- used for the option when the known_devices flag is False
        self.connected_devices = {}
        self.busID_key_map = {}

        # Device that are connected after the usb_inhibit started
        # -- used for the option when the known_devices flag is either False or
        # True -- currently not used
        self.after_connect = {}

        # Known devices -- loaded from file
        self.known_devices = {}

        # If the devices must remain unseen after the usb-inhibit stops
        self.flag_remain_seen = False

        self.flag_known_devices = flag_known_devices

        self.check_args()

    # Validate the command
    def check_args(self):
        self.running_mode_cont = False
        self.process = None

        # Eg. usb-inhibit -u -- sleep 10
        try:
            index = sys.argv.index('--')  # --> 2

            # Check if block
            if sys.argv[index + 1:][0] == "allow":
                try:
                    self.device_class_nonblock = [
                        int(x, 0) for x in sys.argv[index + 1:][1:]
                    ]

                except ValueError:
                    sys.exit(
                        "Invalid arguments for allow - use only valid device classes"
                    )

                self.running_mode_cont = True
                return

            # The process
            self.process = sys.argv[index + 1:]  # --> sleep 10

            # The usb-inhibit parameters
            parameters = sys.argv[1:index]  # --> -u

        except ValueError:
            self.running_mode_cont = True
            parameters = sys.argv[1:]

        if '-help' in parameters:
            self.usage()
            sys.exit(0)

        if '-u' in parameters:
            self.flag_remain_seen = True

    # The proper way to use the usb-inhibit
    def usage(self):
        print("USB-inhibit\n"
              "Call:\n"
              "\t python usb-inhibit.py -- allow 0x1 0x8\n"
              "\t python usb-inhibit.py -- process_with_arguments\n"
              "\t python usb-inhibit.py (continuous inhibitor)\n"
              "Options:\n"
              "\t -u -- unseen, after the program finishes running leave "
              "the USB devices drivers (that were connected during\n"
              "\t\tthe program execution) unloaded\n"
              "\t -help -- how to use the python script")

    # Look for already connected devices and take their bus_id
    # !!! Not used !!!
    def form_initial_devices(self):
        for device in self.context.list_devices(subsystem='usb',
                                                DEVTYPE='usb_device'):

            bus_id = device.sys_name

            if device.find_parent(subsystem='usb',
                                  device_type='usb_device') != None:
                print(bus_id)

                (dev_name, key) = self.extract_information(device)
                self.add_connected_device(bus_id, dev_name, key)

    # Add a new connected device
    def add_connected_device(self, bus_id, dev_name, dev_id):
        self.connected_devices[bus_id] = [dev_name, dev_id]

    # Remove a connected device using the bus_id
    def remove_connected_device(self, bus_id):
        key = ""

        if bus_id in self.busID_key_map.keys():
            key = self.busID_key_map.pop(bus_id)

        return key

    # Form the known devices dictionary
    def get_known_devices(self):
        if os.path.isfile('../USB_devices/known_devices'):
            with open('../USB_devices/known_devices', 'rt') as f_in:
                try:
                    self.known_devices = json.load(f_in)

                except ValueError:
                    self.known_devices = {}

    # Start a process
    def start_process(self):
        try:
            pid = subprocess.Popen(self.process)

        except OSError:
            pid = None

        return pid

    # Rebind the devices that were disconnected (called when the inhibit is
    # stopped)
    def rebind_devices(self):
        with open('/sys/bus/usb/drivers_autoprobe', 'wt') as f_out:
            f_out.write("1")

# If the flag_remain_seen is set then rebind all the still connected
# devices that were connected during the usb-inhibit process
        if not self.flag_remain_seen:
            for dev in self.busID_key_map.keys():
                print("Rebind devie: {}".format(dev))
                usb_on.usb_enable(dev)

    # Stop the usb-inhibit program
    def stop(self):
        print("Stop monitoring...")

        self.rebind_devices()

        if self.observer != None:
            self.observer.stop()

        # For the dbus part we have to clear all the dict content
        self.known_devices.clear()
        self.connected_devices.clear()
        self.busID_key_map.clear()

    # Start the usb-inhibit program
    def start(self):
        self.observer = MonitorObserver(self.monitor,
                                        callback=self.start_monitor,
                                        name='monitor-usb-inhibitor')

        # For the lock screen (the usb inhibit will continue to run until
        # a signal is received -- that would tell the screen unlocked)

        # Form the dict with the known devices
        if self.flag_known_devices:
            self.get_known_devices()

# Initial devices not formed - currently not used
#self.form_initial_devices()

        with open('/sys/bus/usb/drivers_autoprobe', 'wt') as f_out:
            f_out.write("0")

        print("Start monitoring!")

        if not self.running_mode_cont:
            proc = self.start_process()
            print("Runs with a given command mode")

            self.observer.start()
            while proc.poll() is None:
                continue

# For continuous mode must be called manually the stop command
        else:
            # For testing purposes one can let False and then run the inhibit
            # in continuous mode to see the output of it
            self.observer.daemon = False
            self.observer.start()
            print("Runs in continuous mode")

    def add_nonblock_device(self, class_dev):
        self.device_class_non_block.append(class_dev)

    # Start monitoring
    def start_monitor(self, device):
        bus_id = device.sys_name
        action = device.action

        # If a new device is added:
        # * add it to the connected device dict
        # * check if the flag for known_devices is on and the devic
        # is in the known devices dict
        if action == 'add':
            devnum = int(device.attributes.get("devnum"))
            busnum = int(device.attributes.get("busnum"))

            dev = usb.core.find(address=devnum, bus=busnum)

            dev_id = read_device.get_descriptors(dev)
            dev_name = read_device.get_device_name(device.attributes)
            self.add_connected_device(bus_id, dev_name, dev_id)

            print("Device added!")
            print("Device name {}, dev_id {} and bus_id {}".format(
                dev_name, dev_id, bus_id))

            # If a device is removed, simply remove it from the
            # connected device dict
            if action == 'remove':
                print("Device removed!")
                print("Device bus {}".format(bus_id))
                self.remove_connected_device(bus_id)

    # Bind the driver of a device
    def bind_driver(self, bus_id, dev_id):
        print(self.connected_devices)

        if bus_id not in self.connected_devices.keys():
            return False

        if self.connected_devices[bus_id][1] == dev_id:
            usb_on.usb_enable(bus_id)
            return True

        return False
Beispiel #37
0
class RazerDaemon(DBusService):
    """
    Daemon class

    This class sets up the main run loop which serves DBus messages. The logger is initialised
    in this module as well as finding and initialising devices.

    Serves the following functions via DBus
    * getDevices - Returns a list of serial numbers
    * enableTurnOffOnScreensaver - Starts/Continues the run loop on the screensaver thread
    * disableTurnOffOnScreensaver - Pauses the run loop on the screensaver thread
    """

    BUS_NAME = 'org.razer'

    def __init__(self, verbose=False, log_dir=None, console_log=False, run_dir=None, config_file=None, test_dir=None):

        setproctitle.setproctitle('openrazer-daemon')  # pylint: disable=no-member

        # Expanding ~ as python doesn't do it by default, also creating dirs if needed
        try:
            if log_dir is not None:
                log_dir = os.path.expanduser(log_dir)
                os.makedirs(log_dir, exist_ok=True)
            if run_dir is not None:
                run_dir = os.path.expanduser(run_dir)
                os.makedirs(run_dir, exist_ok=True)
        except NotADirectoryError as e:
            print("Failed to create {}".format(e.filename), file=sys.stderr)
            sys.exit(1)

        if config_file is not None:
            config_file = os.path.expanduser(config_file)
            if not os.path.exists(config_file):
                print("Config file {} does not exist.".format(config_file), file=sys.stderr)
                sys.exit(1)

        self._test_dir = test_dir
        self._run_dir = run_dir
        self._config_file = config_file
        self._config = configparser.ConfigParser()
        self.read_config(config_file)

        # Logging
        log_level = logging.INFO
        if verbose or self._config.getboolean('General', 'verbose_logging'):
            log_level = logging.DEBUG
        self.logger = self._create_logger(log_dir, log_level, console_log)

        # Check for plugdev group
        if not self._check_plugdev_group():
            self.logger.critical("User is not a member of the plugdev group")
            sys.exit(1)

        # Setup DBus to use gobject main loop
        dbus.mainloop.glib.threads_init()
        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
        DBusService.__init__(self, self.BUS_NAME, '/org/razer')

        self._init_signals()
        self._main_loop = GLib.MainLoop()

        # Listen for input events from udev
        self._init_udev_monitor()

        # Load Classes
        self._device_classes = openrazer_daemon.hardware.get_device_classes()

        self.logger.info("Initialising Daemon (v%s). Pid: %d", __version__, os.getpid())
        self._init_screensaver_monitor()

        self._razer_devices = DeviceCollection()
        self._load_devices(first_run=True)

        # Add DBus methods
        methods = {
            # interface, method, callback, in-args, out-args
            ('razer.devices', 'getDevices', self.get_serial_list, None, 'as'),
            ('razer.devices', 'supportedDevices', self.supported_devices, None, 's'),
            ('razer.devices', 'enableTurnOffOnScreensaver', self.enable_turn_off_on_screensaver, 'b', None),
            ('razer.devices', 'getOffOnScreensaver', self.get_off_on_screensaver, None, 'b'),
            ('razer.devices', 'syncEffects', self.sync_effects, 'b', None),
            ('razer.devices', 'getSyncEffects', self.get_sync_effects, None, 'b'),
            ('razer.daemon', 'version', self.version, None, 's'),
            ('razer.daemon', 'stop', self.stop, None, None),
        }

        for m in methods:
            self.logger.debug("Adding {}.{} method to DBus".format(m[0], m[1]))
            self.add_dbus_method(m[0], m[1], m[2], in_signature=m[3], out_signature=m[4])

        self._collecting_udev = False
        self._collecting_udev_devices = []

        # TODO remove
        self.sync_effects(self._config.getboolean('Startup', 'sync_effects_enabled'))
        # TODO ======

    @dbus.service.signal('razer.devices')
    def device_removed(self):
        self.logger.debug("Emitted Device Remove Signal")

    @dbus.service.signal('razer.devices')
    def device_added(self):
        self.logger.debug("Emitted Device Added Signal")

    def _create_logger(self, log_dir, log_level, want_console_log):
        """
        Initializes a logger and returns it.

        :param log_dir: If not None, specifies the directory to create the
        log file in
        :param log_level: The log level of messages to print
        :param want_console_log: True if we should print to the console

        :rtype:logging.Logger
        """
        logger = logging.getLogger('razer')
        logger.setLevel(log_level)
        formatter = logging.Formatter('%(asctime)s | %(name)-30s | %(levelname)-8s | %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
        # Don't propagate to default logger
        logger.propagate = 0

        if want_console_log:
            console_logger = logging.StreamHandler()
            console_logger.setLevel(log_level)
            console_logger.setFormatter(formatter)
            logger.addHandler(console_logger)

        if log_dir is not None:
            log_file = os.path.join(log_dir, 'razer.log')
            file_logger = logging.handlers.RotatingFileHandler(log_file, maxBytes=16777216, backupCount=10)  # 16MiB
            file_logger.setLevel(log_level)
            file_logger.setFormatter(formatter)
            logger.addHandler(file_logger)

        return logger

    def _check_plugdev_group(self):
        """
        Check if the user is a member of the plugdev group. For the root
        user, this always returns True

        :rtype: bool
        """
        if getpass.getuser() == 'root':
            return True

        try:
            return grp.getgrnam('plugdev').gr_gid in os.getgroups()
        except KeyError:
            pass

        return False

    def _init_udev_monitor(self):
        self._udev_context = Context()
        udev_monitor = Monitor.from_netlink(self._udev_context)
        udev_monitor.filter_by(subsystem='hid')
        self._udev_observer = MonitorObserver(udev_monitor, callback=self._udev_input_event, name='device-monitor')

    def _init_screensaver_monitor(self):
        try:
            self._screensaver_monitor = ScreensaverMonitor(self)
            self._screensaver_monitor.monitoring = self._config.getboolean('Startup', 'devices_off_on_screensaver')
        except dbus.exceptions.DBusException as e:
            self.logger.error("Failed to init ScreensaverMonitor: {}".format(e))

    def _init_signals(self):
        """
        Heinous hack to properly handle signals on the mainloop. Necessary
        if we want to use the mainloop run() functionality.
        """
        def signal_action(signum):
            """
            Action to take when a signal is trapped
            """
            self.quit(signum)

        def idle_handler():
            """
            GLib idle handler to propagate signals
            """
            GLib.idle_add(signal_action, priority=GLib.PRIORITY_HIGH)

        def handler(*args):
            """
            Unix signal handler
            """
            signal_action(args[0])

        def install_glib_handler(sig):
            """
            Choose a compatible method and install the handler
            """
            unix_signal_add = None

            if hasattr(GLib, "unix_signal_add"):
                unix_signal_add = GLib.unix_signal_add
            elif hasattr(GLib, "unix_signal_add_full"):
                unix_signal_add = GLib.unix_signal_add_full

            if unix_signal_add:
                unix_signal_add(GLib.PRIORITY_HIGH, sig, handler, sig)
            else:
                print("Can't install GLib signal handler!")

        for sig in signal.SIGINT, signal.SIGTERM, signal.SIGHUP:
            signal.signal(sig, idle_handler)
            GLib.idle_add(install_glib_handler, sig, priority=GLib.PRIORITY_HIGH)

    def read_config(self, config_file):
        """
        Read in the config file and set the defaults

        :param config_file: Config file
        :type config_file: str or None
        """
        # Generate sections as trying to access a value even if a default exists will die if the section does not
        for section in ('General', 'Startup', 'Statistics'):
            self._config[section] = {}

        self._config['DEFAULT'] = {
            'verbose_logging': True,
            'sync_effects_enabled': True,
            'devices_off_on_screensaver': True,
            'key_statistics': False,
        }

        if config_file is not None and os.path.exists(config_file):
            self._config.read(config_file)

    def get_off_on_screensaver(self):
        """
        Returns if turn off on screensaver

        :return: Result
        :rtype: bool
        """
        return self._screensaver_monitor.monitoring

    def enable_turn_off_on_screensaver(self, enable):
        """
        Enable the turning off of devices when the screensaver is active
        """
        self._screensaver_monitor.monitoring = enable

    def supported_devices(self):
        result = {cls.__name__: (cls.USB_VID, cls.USB_PID) for cls in self._device_classes}

        return json.dumps(result)

    def version(self):
        """
        Get the daemon version

        :return: Version string
        :rtype: str
        """
        return __version__

    def suspend_devices(self):
        """
        Suspend all devices
        """
        for device in self._razer_devices:
            device.dbus.suspend_device()

    def resume_devices(self):
        """
        Resume all devices
        """
        for device in self._razer_devices:
            device.dbus.resume_device()

    def get_serial_list(self):
        """
        Get list of devices serials
        """
        serial_list = self._razer_devices.serials()
        self.logger.debug('DBus called get_serial_list')
        return serial_list

    def sync_effects(self, enabled):
        """
        Sync the effects across the devices

        :param enabled: True to sync effects
        :type enabled: bool
        """
        # Todo perhaps move logic to device collection
        for device in self._razer_devices.devices:
            device.dbus.effect_sync = enabled

    def get_sync_effects(self):
        """
        Sync the effects across the devices

        :return: True if any devices sync effects
        :rtype: bool
        """
        result = False

        for device in self._razer_devices.devices:
            result |= device.dbus.effect_sync

        return result

    def _load_devices(self, first_run=False):
        """
        Go through supported devices and load them

        Loops through the available hardware classes, loops through
        each device in the system and adds it if needs be.
        """
        if first_run:
            # Just some pretty output
            max_name_len = max([len(cls.__name__) for cls in self._device_classes]) + 2
            for cls in self._device_classes:
                format_str = 'Loaded device specification: {0:-<' + str(max_name_len) + '} ({1:04x}:{2:04X})'

                self.logger.debug(format_str.format(cls.__name__ + ' ', cls.USB_VID, cls.USB_PID))

        if self._test_dir is not None:
            device_list = os.listdir(self._test_dir)
            test_mode = True
        else:
            device_list = list(self._udev_context.list_devices(subsystem='hid'))
            test_mode = False

        device_number = 0
        for device in device_list:

            for device_class in self._device_classes:
                # Interoperability between generic list of 0000:0000:0000.0000 and pyudev
                if test_mode:
                    sys_name = device
                    sys_path = os.path.join(self._test_dir, device)
                else:
                    sys_name = device.sys_name
                    sys_path = device.sys_path

                if sys_name in self._razer_devices:
                    continue

                if device_class.match(sys_name, sys_path):  # Check it matches sys/ ID format and has device_type file
                    self.logger.info('Found device.%d: %s', device_number, sys_name)

                    # TODO add testdir support
                    # Basically find the other usb interfaces
                    device_match = sys_name.split('.')[0]
                    additional_interfaces = []
                    if not test_mode:
                        for alt_device in device_list:
                            if device_match in alt_device.sys_name and alt_device.sys_name != sys_name:
                                additional_interfaces.append(alt_device.sys_path)

                    # Checking permissions
                    test_file = os.path.join(sys_path, 'device_type')
                    file_group_id = os.stat(test_file).st_gid
                    file_group_name = grp.getgrgid(file_group_id)[0]

                    if os.getgid() != file_group_id and file_group_name != 'plugdev':
                        self.logger.critical("Could not access {0}/device_type, file is not owned by plugdev".format(sys_path))
                        break

                    razer_device = device_class(sys_path, device_number, self._config, testing=self._test_dir is not None, additional_interfaces=sorted(additional_interfaces))

                    # Wireless devices sometimes don't listen
                    count = 0
                    while count < 3:
                        # Loop to get serial, exit early if it gets one
                        device_serial = razer_device.get_serial()
                        if len(device_serial) > 0:
                            break
                        time.sleep(0.1)
                        count += 1
                    else:
                        logging.warning("Could not get serial for device {0}. Skipping".format(sys_name))
                        continue

                    self._razer_devices.add(sys_name, device_serial, razer_device)

                    device_number += 1

    def _add_device(self, device):
        """
        Add device event from udev

        :param device: Udev Device
        :type device: pyudev.device._device.Device
        """
        device_number = len(self._razer_devices)
        for device_class in self._device_classes:
            sys_name = device.sys_name
            sys_path = device.sys_path

            if sys_name in self._razer_devices:
                continue

            if device_class.match(sys_name, sys_path):  # Check it matches sys/ ID format and has device_type file
                self.logger.info('Found valid device.%d: %s', device_number, sys_name)
                razer_device = device_class(sys_path, device_number, self._config, testing=self._test_dir is not None)

                # Its a udev event so currently the device hasn't been chmodded yet
                time.sleep(0.2)

                # Wireless devices sometimes don't listen
                device_serial = razer_device.get_serial()

                if len(device_serial) > 0:
                    # Add Device
                    self._razer_devices.add(sys_name, device_serial, razer_device)
                    self.device_added()
                else:
                    logging.warning("Could not get serial for device {0}. Skipping".format(sys_name))
            else:
                # Basically find the other usb interfaces
                device_match = sys_name.split('.')[0]
                for d in self._razer_devices:
                    if device_match in d.device_id and d.device_id != sys_name:
                        if not sys_path in d.dbus.additional_interfaces:
                            d.dbus.additional_interfaces.append(sys_path)
                            return

    def _remove_device(self, device):
        """
        Remove device event from udev

        :param device: Udev Device
        :type device: pyudev.device._device.Device
        """
        device_id = device.sys_name

        try:
            device = self._razer_devices[device_id]

            device.dbus.close()
            device.dbus.remove_from_connection()
            self.logger.warning("Removing %s", device_id)

            # Delete device
            del self._razer_devices[device.device_id]
            self.device_removed()

        except IndexError:  # Why didn't i set it up as KeyError
            # It will return "extra" events for the additional usb interfaces bound to the driver
            pass

    def _udev_input_event(self, device):
        """
        Function called by the Udev monitor (#observerPattern)

        :param device: Udev device
        :type device: pyudev.device._device.Device
        """
        self.logger.debug('Device event [%s]: %s', device.action, device.device_path)
        if device.action == 'add':
            if self._collecting_udev:
                self._collecting_udev_devices.append(device)
                return
            else:
                self._collecting_udev_devices = [device]
                self._collecting_udev = True
                t = threading.Thread(target=self._collecting_udev_method, args=(device,))
                t.start()
        elif device.action == 'remove':
            self._remove_device(device)

    def _collecting_udev_method(self, device):
        time.sleep(2)  # delay to let udev add all devices that we want
        # Sort the devices
        self._collecting_udev_devices.sort(key=lambda x: x.sys_path, reverse=True)
        for d in self._collecting_udev_devices:
            self._add_device(d)
        self._collecting_udev = False

    def run(self):
        """
        Run the daemon
        """
        self.logger.info('Serving DBus')

        # Start listening for device changes
        self._udev_observer.start()

        # Start the mainloop
        try:
            self._main_loop.run()
        except KeyboardInterrupt:
            self.logger.debug('Shutting down')

    def stop(self):
        """
        Wrapper for quit
        """
        self.quit(None)

    def quit(self, signum):
        """
        Quit by stopping the main loop, observer, and screensaver thread
        """
        # pylint: disable=unused-argument
        if signum is None:
            self.logger.info('Stopping daemon.')
        else:
            self.logger.info('Stopping daemon on signal %d', signum)

        self._main_loop.quit()

        # Stop udev monitor
        self._udev_observer.send_stop()

        for device in self._razer_devices:
            device.dbus.close()
Beispiel #38
0
    def __init__(self,
                 obj,
                 devname,
                 refresh=0,
                 baudrate=115200,
                 bytesize=8,
                 parity='N',
                 stopbits=2,
                 timeout=400,
                 debug=False,
                 window_size=8,
                 rx_window_size=16,
                 transport_fifo_size=100,
                 ack_retransmit_timeout_ms=25,
                 frame_retransmit_timeout_ms=50):
        # Name and type of the connection peer
        self.name = ''
        self.type = ''

        self._devname = devname
        self.object = obj
        self.baudrate = baudrate
        self.bytesize = bytesize
        self.parity = parity
        self.stopbits = stopbits
        self.timeout = timeout

        self.transport_fifo_size = transport_fifo_size
        self.ack_retransmit_timeout_ms = ack_retransmit_timeout_ms
        self.max_window_size = window_size
        self.frame_retransmit_timeout_ms = frame_retransmit_timeout_ms
        self.rx_window_size = rx_window_size

        # State of transport FIFO
        self._transport_fifo = None
        self._last_sent_ack_time_ms = None

        # State for receiving a MIN frame
        self._rx_frame_buf = bytearray()
        self._rx_header_bytes_seen = 0
        self._rx_frame_state = self.SEARCHING_FOR_SOF
        self._rx_frame_checksum = 0
        self._rx_frame_id_control = 0
        self._rx_frame_seq = 0
        self._rx_frame_length = 0
        self._rx_control = 0
        self._stashed_rx_dict = {}

        self._rn = 0  # Sequence number expected to be received next
        self._sn_min = 0  # Sequence number of first frame currently in the sending window
        self._sn_max = 0  # Next sequence number to use for sending a frame
        self.source = {}  # sequence <--> sommand source linking

        self._nack_outstanding = None

        self._transport_fifo_reset()

        if refresh > 0:
            self._refresh = refresh

        self._updateTimer = LoopingCall(self.update)
        self._updateTimer.start(self._refresh)

        context = Context()
        for device in context.list_devices(subsystem='tty'):
            if 'DEVLINKS' in device.keys() and self._devname in device.get(
                    'DEVLINKS'):
                self.Connect()
                self.connectionMade()

        cm = Monitor.from_netlink(context)
        cm.filter_by(subsystem='tty')
        observer = MonitorObserver(cm,
                                   callback=self.ConnectionMCallBack,
                                   name='monitor-observer')
        observer.start()
class USB_inhibit:

    # Create context
    context = Context()

    # Create monitor
    monitor = Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb', device_type='usb_device')

    name_device = ["Manufacturer", "Product"]

    MASS_STORAGE = 0x8
    HID = 0x03
    AUDIO = 0x01
    VIDEO = 0x0E

    device_class_nonblock = [0x09] # Allow USB hubs to connect


    # Class initializer
    def __init__(self, flag_known_devices):
	# Devices that where connected when the usb_inhibit started
	# -- used for the option when the known_devices flag is False
	self.connected_devices = {}
	self.busID_key_map = {}

	# Device that are connected after the usb_inhibit started
	# -- used for the option when the known_devices flag is either False or
	# True -- currently not used
	self.after_connect = {}

	# Known devices -- loaded from file
	self.known_devices = {}

	# If the devices must remain unseen after the usb-inhibit stops
	self.flag_remain_seen = False

	self.flag_known_devices = flag_known_devices
	
	self.check_args()



    # Validate the command
    def check_args(self):
	self.running_mode_cont = False
	self.process = None

      	# Eg. usb-inhibit -u -- sleep 10
	try:
            index = sys.argv.index('--') # --> 2

            # Check if block
            if sys.argv[index+1:][0] == "allow":
                try: 
                    self.device_class_nonblock = [int(x, 0) for x in sys.argv[index+1:][1:]]

                except ValueError:
                    sys.exit("Invalid arguments for allow - use only valid device classes")

                self.running_mode_cont = True
                return

            # The process
            self.process = sys.argv[index+1:] # --> sleep 10

            # The usb-inhibit parameters
	    parameters = sys.argv[1:index] # --> -u

	except ValueError:
	    self.running_mode_cont = True
            parameters = sys.argv[1:]

		 
        if '-help' in parameters:
	    self.usage()
	    sys.exit(0)

	if '-u' in parameters:
	    self.flag_remain_seen = True


		

    # The proper way to use the usb-inhibit
    def usage(self):
	print("USB-inhibit\n"
		"Call:\n"
                    "\t python usb-inhibit.py -- allow 0x1 0x8\n"
                    "\t python usb-inhibit.py -- process_with_arguments\n"
                    "\t python usb-inhibit.py (continuous inhibitor)\n"
		"Options:\n"
	    	    "\t -u -- unseen, after the program finishes running leave "
		    "the USB devices drivers (that were connected during\n"
		    "\t\tthe program execution) unloaded\n"
                    "\t -help -- how to use the python script")


    # Look for already connected devices and take their bus_id
    # !!! Not used !!!
    def form_initial_devices(self):
	for device in self.context.list_devices(subsystem='usb',
                                                    DEVTYPE='usb_device'):  
		                                                                        
	    bus_id = device.sys_name		                                    
		                                                                        
	    if  device.find_parent(subsystem='usb',
                                        device_type='usb_device') != None:  
	        print(bus_id)
		                                                                        
	        (dev_name, key) = self.extract_information(device)              
		self.add_connected_device(bus_id, dev_name, key)	            

    # Add a new connected device
    def add_connected_device(self, bus_id, dev_name, dev_id):
	self.connected_devices[bus_id] = [dev_name, dev_id]
     

    # Remove a connected device using the bus_id
    def remove_connected_device(self, bus_id):                                  
        key = ""

        if bus_id in self.busID_key_map.keys():
            key = self.busID_key_map.pop(bus_id)                                    

	return key                                                              
                                                                                

    # Form the known devices dictionary
    def get_known_devices(self):
	if os.path.isfile('../USB_devices/known_devices'):	                                                           
            with open('../USB_devices/known_devices', 'rt') as f_in:
		try:	                                                                                  
		    self.known_devices = json.load(f_in)

		except ValueError:                                                                        
	    	    self.known_devices = {}  		
	

    # Start a process
    def start_process(self):
	try:
            pid = subprocess.Popen(self.process)

	except OSError:
	    pid = None

	return pid


    # Rebind the devices that were disconnected (called when the inhibit is
    # stopped)
    def rebind_devices(self):
        with open('/sys/bus/usb/drivers_autoprobe', 'wt') as f_out:
            f_out.write("1")
	
	# If the flag_remain_seen is set then rebind all the still connected
	# devices that were connected during the usb-inhibit process
	if not self.flag_remain_seen:
	    for dev in self.busID_key_map.keys():
	        print("Rebind devie: {}".format(dev))
		usb_on.usb_enable(dev)


    # Stop the usb-inhibit program
    def stop(self):
	print("Stop monitoring...")

	self.rebind_devices()

        if self.observer != None:
    	    self.observer.stop()
	
	# For the dbus part we have to clear all the dict content
	self.known_devices.clear()
	self.connected_devices.clear()
	self.busID_key_map.clear()


    # Start the usb-inhibit program 
    def start(self):
        self.observer = MonitorObserver(self.monitor, callback = self.start_monitor,
		                                      name='monitor-usb-inhibitor') 

	# For the lock screen (the usb inhibit will continue to run until
	# a signal is received -- that would tell the screen unlocked)

	# Form the dict with the known devices
	if self.flag_known_devices:
    	    self.get_known_devices()

	# Initial devices not formed - currently not used
        #self.form_initial_devices()

	with open('/sys/bus/usb/drivers_autoprobe', 'wt') as f_out:
	    f_out.write("0")
		
	print("Start monitoring!")

	if not self.running_mode_cont:	
            proc = self.start_process()
	    print ("Runs with a given command mode")

	    self.observer.start()
	    while proc.poll() is None:
	        continue
		
	# For continuous mode must be called manually the stop command
	else:
            # For testing purposes one can let False and then run the inhibit
            # in continuous mode to see the output of it
	    self.observer.daemon = False
	    self.observer.start()
	    print("Runs in continuous mode")

    def add_nonblock_device(self, class_dev):
        self.device_class_non_block.append(class_dev)


    # Start monitoring
    def start_monitor(self, device):
	bus_id = device.sys_name
	action = device.action                                                                          

	# If a new device is added:
	# * add it to the connected device dict
        # * check if the flag for known_devices is on and the devic
	# is in the known devices dict
	if action == 'add':
	    devnum = int(device.attributes.get("devnum"))
	    busnum = int(device.attributes.get("busnum"))
			
	    dev = usb.core.find(address=devnum, bus=busnum)
			
    	    dev_id = read_device.get_descriptors(dev)
	    dev_name = read_device.get_device_name(device.attributes)
	    self.add_connected_device(bus_id, dev_name, dev_id)

	    print("Device added!")
    	    print("Device name {}, dev_id {} and bus_id {}".format(dev_name, dev_id, bus_id))

       
	    # If a device is removed, simply remove it from the
	    # connected device dict
	    if action == 'remove':
		print("Device removed!")
		print("Device bus {}".format(bus_id))
		self.remove_connected_device(bus_id)

    # Bind the driver of a device
    def bind_driver(self, bus_id, dev_id):
        print (self.connected_devices)

        if bus_id not in self.connected_devices.keys():
            return False

        if self.connected_devices[bus_id][1] == dev_id:
            usb_on.usb_enable(bus_id)
            return True

        return False