151 lines
5.2 KiB
Python
151 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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## src/common/location_listener.py
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##
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## Copyright (C) 2009-2010 Yann Leboulanger <asterix AT lagaule.org>
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##
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## This file is part of Gajim.
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##
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## Gajim 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
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## by the Free Software Foundation; version 3 only.
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##
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## Gajim 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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## You should have received a copy of the GNU General Public License
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## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
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##
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from datetime import datetime
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from common import gajim
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from common import pep
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from common import dbus_support
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if dbus_support.supported:
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import dbus
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import dbus.glib
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class LocationListener:
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_instance = None
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@classmethod
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def get(cls):
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if cls._instance is None:
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cls._instance = cls()
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return cls._instance
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def __init__(self):
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self._data = {}
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def get_data(self):
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bus = dbus.SessionBus()
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try:
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# Initializes Geoclue.
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obj = bus.get_object('org.freedesktop.Geoclue.Master',
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'/org/freedesktop/Geoclue/Master')
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# get MasterClient path
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path = obj.Create()
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# get MasterClient
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cli = bus.get_object('org.freedesktop.Geoclue.Master', path)
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cli.SetRequirements(1, 0, True, 1023)
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self._get_address(cli)
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self._get_position(cli)
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except:
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self._on_geoclue_position_changed()
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return
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def _get_address(self, cli):
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bus = dbus.SessionBus()
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cli.AddressStart()
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# Check that there is a provider
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name, description, service, path = cli.GetAddressProvider()
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if path:
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provider = bus.get_object(service, path)
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timestamp, address, accuracy = provider.GetAddress()
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self._on_geoclue_address_changed(timestamp, address, accuracy)
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def _get_position(self, cli):
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bus = dbus.SessionBus()
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cli.PositionStart()
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# Check that there is a provider
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name, description, service, path = cli.GetPositionProvider()
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if path:
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provider = bus.get_object(service, path)
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fields, timestamp, lat, lon, alt, accuracy = provider.GetPosition()
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self._on_geoclue_position_changed(fields, timestamp, lat, lon, alt,
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accuracy)
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def start(self):
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self.location_info = {}
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self.get_data()
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bus = dbus.SessionBus()
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# Geoclue
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bus.add_signal_receiver(self._on_geoclue_address_changed,
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'AddressChanged', 'org.freedesktop.Geoclue.Address')
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bus.add_signal_receiver(self._on_geoclue_position_changed,
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'PositionChanged', 'org.freedesktop.Geoclue.Position')
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def shut_down(self):
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pass
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def _on_geoclue_address_changed(self, timestamp=None, address={},
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accuracy=None):
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# update data with info we just received
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for field in ['country', 'countrycode', 'locality', 'postalcode',
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'region', 'street']:
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self._data[field] = address.get(field, None)
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if timestamp:
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self._data['timestamp'] = self._timestamp_to_utc(timestamp)
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if accuracy:
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# in PEP it's horizontal accuracy
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self._data['accuracy'] = accuracy[1]
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self._send_location()
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def _on_geoclue_position_changed(self, fields=[], timestamp=None, lat=None,
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lon=None, alt=None, accuracy=None):
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# update data with info we just received
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_dict = {'lat': lat, 'lon': lon, 'alt': alt}
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for field in _dict:
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if _dict[field] is not None:
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self._data[field] = _dict[field]
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if timestamp:
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self._data['timestamp'] = self._timestamp_to_utc(timestamp)
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if accuracy:
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# in PEP it's horizontal accuracy
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self._data['accuracy'] = accuracy[1]
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self._send_location()
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def _send_location(self):
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accounts = gajim.connections.keys()
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for acct in accounts:
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if not gajim.account_is_connected(acct):
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continue
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if not gajim.config.get_per('accounts', acct, 'publish_location'):
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continue
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if self.location_info == self._data:
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continue
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if 'timestamp' in self.location_info and 'timestamp' in self._data:
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last_data = self.location_info.copy()
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del last_data['timestamp']
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new_data = self._data.copy()
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del new_data['timestamp']
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if last_data == new_data:
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continue
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gajim.connections[acct].send_location(self._data)
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self.location_info = self._data.copy()
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def _timestamp_to_utc(self, timestamp):
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time = datetime.utcfromtimestamp(timestamp)
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return time.strftime('%Y-%m-%dT%H:%MZ')
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def enable():
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listener = LocationListener.get()
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listener.start()
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def disable():
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listener = LocationListener.get()
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listener.shut_down()
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