tuhi/tuhigui/tuhi.py

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#!/usr/bin/env python3
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
from gi.repository import GObject, Gio, GLib
import argparse
import errno
import os
import logging
import re
import xdg.BaseDirectory
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger('tuhi')
CONFIG_PATH = os.path.join(xdg.BaseDirectory.xdg_data_home, 'tuhi-kete')
TUHI_DBUS_NAME = 'org.freedesktop.tuhi1'
ORG_FREEDESKTOP_TUHI1_MANAGER = 'org.freedesktop.tuhi1.Manager'
ORG_FREEDESKTOP_TUHI1_DEVICE = 'org.freedesktop.tuhi1.Device'
ROOT_PATH = '/org/freedesktop/tuhi1'
ORG_BLUEZ_DEVICE1 = 'org.bluez.Device1'
class DBusError(Exception):
def __init__(self, message):
self.message = message
class _DBusObject(GObject.Object):
_connection = None
def __init__(self, name, interface, objpath):
GObject.GObject.__init__(self)
# this is not handled asynchronously because if we fail to
# get the session bus, we have other issues
if _DBusObject._connection is None:
self._connect_to_session()
self.interface = interface
self.objpath = objpath
self._online = False
self._name = name
try:
self._connect()
except DBusError:
self._reconnect_timer = GObject.timeout_add_seconds(2, self._on_reconnect_timer)
def _connect(self):
try:
self.proxy = Gio.DBusProxy.new_sync(self._connection,
Gio.DBusProxyFlags.NONE, None,
self._name, self.objpath,
self.interface, None)
if self.proxy.get_name_owner() is None:
raise DBusError(f'No-one is handling {self._name}, is the daemon running?')
self._online = True
self.notify('online')
except GLib.Error as e:
if (e.domain == 'g-io-error-quark' and
e.code == Gio.IOErrorEnum.DBUS_ERROR):
raise DBusError(e.message)
else:
raise e
self.proxy.connect('g-properties-changed', self._on_properties_changed)
self.proxy.connect('g-signal', self._on_signal_received)
def _on_reconnect_timer(self):
try:
2019-07-11 04:11:55 +02:00
logger.debug('reconnecting')
self._connect()
return False
except DBusError:
return True
@GObject.Property
def online(self):
return self._online
def _connect_to_session(self):
try:
_DBusObject._connection = Gio.bus_get_sync(Gio.BusType.SESSION, None)
except GLib.Error as e:
if (e.domain == 'g-io-error-quark' and
e.code == Gio.IOErrorEnum.DBUS_ERROR):
raise DBusError(e.message)
else:
raise e
def _on_properties_changed(self, proxy, changed_props, invalidated_props):
# Implement this in derived classes to respond to property changes
pass
def _on_signal_received(self, proxy, sender, signal, parameters):
# Implement this in derived classes to respond to signals
pass
def property(self, name):
p = self.proxy.get_cached_property(name)
if p is not None:
return p.unpack()
return p
def terminate(self):
del(self.proxy)
class _DBusSystemObject(_DBusObject):
'''
Same as the _DBusObject, but connects to the system bus instead
'''
def __init__(self, name, interface, objpath):
self._connect_to_system()
super().__init__(name, interface, objpath)
def _connect_to_system(self):
try:
self._connection = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
except GLib.Error as e:
if (e.domain == 'g-io-error-quark' and
e.code == Gio.IOErrorEnum.DBUS_ERROR):
raise DBusError(e.message)
else:
raise e
class BlueZDevice(_DBusSystemObject):
def __init__(self, objpath):
super().__init__('org.bluez', ORG_BLUEZ_DEVICE1, objpath)
self.proxy.connect('g-properties-changed', self._on_properties_changed)
@GObject.Property
def connected(self):
return self.proxy.get_cached_property('Connected').unpack()
def _on_properties_changed(self, obj, properties, invalidated_properties):
properties = properties.unpack()
if 'Connected' in properties:
self.notify('connected')
class TuhiKeteDevice(_DBusObject):
__gsignals__ = {
'button-press-required':
(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
'registered':
(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
}
def __init__(self, manager, objpath):
_DBusObject.__init__(self, TUHI_DBUS_NAME,
ORG_FREEDESKTOP_TUHI1_DEVICE,
objpath)
self.manager = manager
self.is_registering = False
self._bluez_device = BlueZDevice(self.property('BlueZDevice'))
self._bluez_device.connect('notify::connected', self._on_connected)
@classmethod
def is_device_address(cls, string):
if re.match(r'[0-9a-f]{2}(:[0-9a-f]{2}){5}$', string.lower()):
return string
raise argparse.ArgumentTypeError(f'"{string}" is not a valid device address')
@GObject.Property
def address(self):
return self._bluez_device.property('Address')
@GObject.Property
def name(self):
return self._bluez_device.property('Name')
@GObject.Property
def listening(self):
return self.property('Listening')
@GObject.Property
def drawings_available(self):
return self.property('DrawingsAvailable')
@GObject.Property
def battery_percent(self):
return self.property('BatteryPercent')
@GObject.Property
def battery_state(self):
return self.property('BatteryState')
@GObject.Property
def connected(self):
return self._bluez_device.connected
def _on_connected(self, bluez_device, pspec):
self.notify('connected')
def register(self):
logger.debug(f'{self}: Register')
# FIXME: Register() doesn't return anything useful yet, so we wait until
# the device is in the Manager's Devices property
self.s1 = self.manager.connect('notify::devices', self._on_mgr_devices_updated)
self.is_registering = True
self.proxy.Register()
def start_listening(self):
self.proxy.StartListening()
def stop_listening(self):
try:
self.proxy.StopListening()
except GLib.Error as e:
if (e.domain != 'g-dbus-error-quark' or
e.code != Gio.IOErrorEnum.EXISTS or
Gio.dbus_error_get_remote_error(e) != 'org.freedesktop.DBus.Error.ServiceUnknown'):
raise e
def json(self, timestamp):
SUPPORTED_FILE_FORMAT = 1
return self.proxy.GetJSONData('(ut)', SUPPORTED_FILE_FORMAT, timestamp)
def _on_signal_received(self, proxy, sender, signal, parameters):
if signal == 'ButtonPressRequired':
logger.info(f'{self}: Press button on device now')
self.emit('button-press-required', self)
elif signal == 'ListeningStopped':
err = parameters[0]
if err == -errno.EACCES:
logger.error(f'{self}: wrong device, please re-register.')
elif err < 0:
logger.error(f'{self}: an error occured: {os.strerror(-err)}')
self.notify('listening')
def _on_properties_changed(self, proxy, changed_props, invalidated_props):
if changed_props is None:
return
changed_props = changed_props.unpack()
if 'DrawingsAvailable' in changed_props:
self.notify('drawings-available')
elif 'Listening' in changed_props:
self.notify('listening')
elif 'BatteryPercent' in changed_props:
self.notify('battery-percent')
elif 'BatteryState' in changed_props:
self.notify('battery-state')
def __repr__(self):
return f'{self.address} - {self.name}'
def _on_mgr_devices_updated(self, manager, pspec):
if not self.is_registering:
return
for d in manager.devices:
if d.address == self.address:
self.is_registering = False
self.manager.disconnect(self.s1)
del(self.s1)
logger.info(f'{self}: Registration successful')
self.emit('registered', self)
def terminate(self):
try:
self.manager.disconnect(self.s1)
except AttributeError:
pass
self._bluez_device.terminate()
super(TuhiKeteDevice, self).terminate()
class TuhiKeteManager(_DBusObject):
__gsignals__ = {
'unregistered-device':
(GObject.SignalFlags.RUN_FIRST, None, (GObject.TYPE_PYOBJECT,)),
}
def __init__(self):
_DBusObject.__init__(self, TUHI_DBUS_NAME,
ORG_FREEDESKTOP_TUHI1_MANAGER,
ROOT_PATH)
self._devices = {}
self._unregistered_devices = {}
logger.info('starting up')
if not self.online:
self.connect('notify::online', self._init)
else:
self._init()
def _init(self, *args, **kwargs):
logger.info('manager is online')
for objpath in self.property('Devices'):
device = TuhiKeteDevice(self, objpath)
self._devices[device.address] = device
@GObject.Property
def devices(self):
return [v for k, v in self._devices.items()]
@GObject.Property
def unregistered_devices(self):
return [v for k, v in self._unregistered_devices.items()]
@GObject.Property
def searching(self):
return self.proxy.get_cached_property('Searching')
def start_search(self):
self._unregistered_devices = {}
self.proxy.StartSearch()
def stop_search(self):
try:
self.proxy.StopSearch()
except GLib.Error as e:
if (e.domain != 'g-dbus-error-quark' or
e.code != Gio.IOErrorEnum.EXISTS or
Gio.dbus_error_get_remote_error(e) != 'org.freedesktop.DBus.Error.ServiceUnknown'):
raise e
self._unregistered_devices = {}
def terminate(self):
for dev in self._devices.values():
dev.terminate()
self._devices = {}
self._unregistered_devices = {}
super(TuhiKeteManager, self).terminate()
def _on_properties_changed(self, proxy, changed_props, invalidated_props):
if changed_props is None:
return
changed_props = changed_props.unpack()
if 'Devices' in changed_props:
objpaths = changed_props['Devices']
for objpath in objpaths:
try:
d = self._unregistered_devices[objpath]
self._devices[d.address] = d
del self._unregistered_devices[objpath]
except KeyError:
# if we called Register() on an existing device it's not
# in unregistered devices
pass
self.notify('devices')
if 'Searching' in changed_props:
self.notify('searching')
def _handle_unregistered_device(self, objpath):
for addr, dev in self._devices.items():
if dev.objpath == objpath:
self.emit('unregistered-device', dev)
return
device = TuhiKeteDevice(self, objpath)
self._unregistered_devices[objpath] = device
logger.debug(f'New unregistered device: {device}')
self.emit('unregistered-device', device)
def _on_signal_received(self, proxy, sender, signal, parameters):
if signal == 'SearchStopped':
self.notify('searching')
elif signal == 'UnregisteredDevice':
objpath = parameters[0]
self._handle_unregistered_device(objpath)
def __getitem__(self, btaddr):
return self._devices[btaddr]