398 lines
13 KiB
Python
398 lines
13 KiB
Python
#!/usr/bin/env python3
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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from gi.repository import GObject, Gio, GLib
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import argparse
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import errno
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import os
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import logging
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import re
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import xdg.BaseDirectory
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logging.basicConfig(level=logging.DEBUG)
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logger = logging.getLogger('tuhi.gui.dbus')
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CONFIG_PATH = os.path.join(xdg.BaseDirectory.xdg_data_home, 'tuhi-kete')
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TUHI_DBUS_NAME = 'org.freedesktop.tuhi1'
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ORG_FREEDESKTOP_TUHI1_MANAGER = 'org.freedesktop.tuhi1.Manager'
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ORG_FREEDESKTOP_TUHI1_DEVICE = 'org.freedesktop.tuhi1.Device'
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ROOT_PATH = '/org/freedesktop/tuhi1'
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ORG_BLUEZ_DEVICE1 = 'org.bluez.Device1'
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class DBusError(Exception):
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def __init__(self, message):
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self.message = message
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class _DBusObject(GObject.Object):
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_connection = None
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def __init__(self, name, interface, objpath):
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GObject.GObject.__init__(self)
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# this is not handled asynchronously because if we fail to
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# get the session bus, we have other issues
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if _DBusObject._connection is None:
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self._connect_to_session()
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self.interface = interface
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self.objpath = objpath
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self._online = False
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self._name = name
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try:
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self._connect()
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except DBusError:
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self._reconnect_timer = GObject.timeout_add_seconds(2, self._on_reconnect_timer)
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def _connect(self):
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try:
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self.proxy = Gio.DBusProxy.new_sync(self._connection,
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Gio.DBusProxyFlags.NONE, None,
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self._name, self.objpath,
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self.interface, None)
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if self.proxy.get_name_owner() is None:
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raise DBusError(f'No-one is handling {self._name}, is the daemon running?')
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self._online = True
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self.notify('online')
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except GLib.Error as e:
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if (e.domain == 'g-io-error-quark' and
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e.code == Gio.IOErrorEnum.DBUS_ERROR):
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raise DBusError(e.message)
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else:
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raise e
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self.proxy.connect('g-properties-changed', self._on_properties_changed)
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self.proxy.connect('g-signal', self._on_signal_received)
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def _on_reconnect_timer(self):
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try:
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logger.debug('reconnecting')
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self._connect()
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return False
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except DBusError:
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return True
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@GObject.Property
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def online(self):
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return self._online
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def _connect_to_session(self):
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try:
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_DBusObject._connection = Gio.bus_get_sync(Gio.BusType.SESSION, None)
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except GLib.Error as e:
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if (e.domain == 'g-io-error-quark' and
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e.code == Gio.IOErrorEnum.DBUS_ERROR):
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raise DBusError(e.message)
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else:
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raise e
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def _on_properties_changed(self, proxy, changed_props, invalidated_props):
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# Implement this in derived classes to respond to property changes
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pass
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def _on_signal_received(self, proxy, sender, signal, parameters):
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# Implement this in derived classes to respond to signals
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pass
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def property(self, name):
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p = self.proxy.get_cached_property(name)
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if p is not None:
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return p.unpack()
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return p
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def terminate(self):
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del(self.proxy)
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class _DBusSystemObject(_DBusObject):
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'''
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Same as the _DBusObject, but connects to the system bus instead
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'''
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def __init__(self, name, interface, objpath):
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self._connect_to_system()
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super().__init__(name, interface, objpath)
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def _connect_to_system(self):
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try:
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self._connection = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
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except GLib.Error as e:
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if (e.domain == 'g-io-error-quark' and
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e.code == Gio.IOErrorEnum.DBUS_ERROR):
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raise DBusError(e.message)
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else:
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raise e
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class BlueZDevice(_DBusSystemObject):
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def __init__(self, objpath):
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super().__init__('org.bluez', ORG_BLUEZ_DEVICE1, objpath)
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self.proxy.connect('g-properties-changed', self._on_properties_changed)
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@GObject.Property
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def connected(self):
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return self.proxy.get_cached_property('Connected').unpack()
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def _on_properties_changed(self, obj, properties, invalidated_properties):
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properties = properties.unpack()
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if 'Connected' in properties:
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self.notify('connected')
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class TuhiKeteDevice(_DBusObject):
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__gsignals__ = {
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'button-press-required':
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(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
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'registered':
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(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
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}
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def __init__(self, manager, objpath):
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_DBusObject.__init__(self, TUHI_DBUS_NAME,
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ORG_FREEDESKTOP_TUHI1_DEVICE,
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objpath)
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self.manager = manager
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self.is_registering = False
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self._bluez_device = BlueZDevice(self.property('BlueZDevice'))
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self._bluez_device.connect('notify::connected', self._on_connected)
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self._sync_state = 0
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@classmethod
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def is_device_address(cls, string):
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if re.match(r'[0-9a-f]{2}(:[0-9a-f]{2}){5}$', string.lower()):
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return string
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raise argparse.ArgumentTypeError(f'"{string}" is not a valid device address')
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@GObject.Property
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def address(self):
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return self._bluez_device.property('Address')
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@GObject.Property
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def name(self):
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return self._bluez_device.property('Name')
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@GObject.Property
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def dimensions(self):
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return self.property('Dimensions')
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@GObject.Property
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def listening(self):
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return self.property('Listening')
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@GObject.Property
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def drawings_available(self):
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return self.property('DrawingsAvailable')
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@GObject.Property
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def battery_percent(self):
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return self.property('BatteryPercent')
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@GObject.Property
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def battery_state(self):
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return self.property('BatteryState')
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@GObject.Property
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def connected(self):
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return self._bluez_device.connected
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@GObject.Property
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def sync_state(self):
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return self._sync_state
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def _on_connected(self, bluez_device, pspec):
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self.notify('connected')
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def register(self):
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logger.debug(f'{self}: Register')
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# FIXME: Register() doesn't return anything useful yet, so we wait until
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# the device is in the Manager's Devices property
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self.s1 = self.manager.connect('notify::devices', self._on_mgr_devices_updated)
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self.is_registering = True
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self.proxy.Register()
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def start_listening(self):
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self.proxy.StartListening()
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def stop_listening(self):
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try:
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self.proxy.StopListening()
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except GLib.Error as e:
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if (e.domain != 'g-dbus-error-quark' or
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e.code != Gio.IOErrorEnum.EXISTS or
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Gio.dbus_error_get_remote_error(e) != 'org.freedesktop.DBus.Error.ServiceUnknown'):
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raise e
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def json(self, timestamp):
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SUPPORTED_FILE_FORMAT = 1
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return self.proxy.GetJSONData('(ut)', SUPPORTED_FILE_FORMAT, timestamp)
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def _on_signal_received(self, proxy, sender, signal, parameters):
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if signal == 'ButtonPressRequired':
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logger.info(f'{self}: Press button on device now')
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self.emit('button-press-required', self)
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elif signal == 'ListeningStopped':
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err = parameters[0]
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if err == -errno.EACCES:
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logger.error(f'{self}: wrong device, please re-register.')
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elif err < 0:
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logger.error(f'{self}: an error occured: {os.strerror(-err)}')
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self.notify('listening')
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elif signal == 'SyncState':
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self._sync_state = parameters[0]
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self.notify('sync-state')
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def _on_properties_changed(self, proxy, changed_props, invalidated_props):
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if changed_props is None:
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return
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changed_props = changed_props.unpack()
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if 'DrawingsAvailable' in changed_props:
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self.notify('drawings-available')
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elif 'Listening' in changed_props:
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self.notify('listening')
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elif 'BatteryPercent' in changed_props:
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self.notify('battery-percent')
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elif 'BatteryState' in changed_props:
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self.notify('battery-state')
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def __repr__(self):
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return f'{self.address} - {self.name}'
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def _on_mgr_devices_updated(self, manager, pspec):
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if not self.is_registering:
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return
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for d in manager.devices:
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if d.address == self.address:
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self.is_registering = False
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self.manager.disconnect(self.s1)
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del(self.s1)
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logger.info(f'{self}: Registration successful')
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self.emit('registered', self)
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def terminate(self):
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try:
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self.manager.disconnect(self.s1)
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except AttributeError:
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pass
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self._bluez_device.terminate()
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super(TuhiKeteDevice, self).terminate()
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class TuhiKeteManager(_DBusObject):
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__gsignals__ = {
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'unregistered-device':
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(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
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}
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def __init__(self):
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_DBusObject.__init__(self, TUHI_DBUS_NAME,
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ORG_FREEDESKTOP_TUHI1_MANAGER,
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ROOT_PATH)
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self._devices = {}
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self._unregistered_devices = {}
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logger.info('starting up')
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if not self.online:
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self.connect('notify::online', self._init)
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else:
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self._init()
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def _init(self, *args, **kwargs):
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logger.info('manager is online')
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for objpath in self.property('Devices'):
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device = TuhiKeteDevice(self, objpath)
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self._devices[device.address] = device
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@GObject.Property
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def devices(self):
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return [v for k, v in self._devices.items()]
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@GObject.Property
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def unregistered_devices(self):
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return [v for k, v in self._unregistered_devices.items()]
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@GObject.Property
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def searching(self):
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return self.proxy.get_cached_property('Searching')
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def start_search(self):
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self._unregistered_devices = {}
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self.proxy.StartSearch()
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def stop_search(self):
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try:
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self.proxy.StopSearch()
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except GLib.Error as e:
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if (e.domain != 'g-dbus-error-quark' or
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e.code != Gio.IOErrorEnum.EXISTS or
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Gio.dbus_error_get_remote_error(e) != 'org.freedesktop.DBus.Error.ServiceUnknown'):
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raise e
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self._unregistered_devices = {}
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def terminate(self):
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for dev in self._devices.values():
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dev.terminate()
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self._devices = {}
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self._unregistered_devices = {}
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super(TuhiKeteManager, self).terminate()
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def _on_properties_changed(self, proxy, changed_props, invalidated_props):
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if changed_props is None:
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return
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changed_props = changed_props.unpack()
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if 'Devices' in changed_props:
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objpaths = changed_props['Devices']
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for objpath in objpaths:
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try:
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d = self._unregistered_devices[objpath]
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self._devices[d.address] = d
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del self._unregistered_devices[objpath]
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except KeyError:
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# if we called Register() on an existing device it's not
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# in unregistered devices
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pass
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self.notify('devices')
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if 'Searching' in changed_props:
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self.notify('searching')
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def _handle_unregistered_device(self, objpath):
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for addr, dev in self._devices.items():
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if dev.objpath == objpath:
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self.emit('unregistered-device', dev)
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return
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device = TuhiKeteDevice(self, objpath)
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self._unregistered_devices[objpath] = device
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logger.debug(f'New unregistered device: {device}')
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self.emit('unregistered-device', device)
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def _on_signal_received(self, proxy, sender, signal, parameters):
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if signal == 'SearchStopped':
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self.notify('searching')
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elif signal == 'UnregisteredDevice':
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objpath = parameters[0]
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self._handle_unregistered_device(objpath)
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def __getitem__(self, btaddr):
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return self._devices[btaddr]
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