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# -*- coding: utf-8 -*-
## src/common/location_listener.py
##
## Copyright (C) 2009-2012 Yann Leboulanger <asterix AT lagaule.org>
##
## This file is part of Gajim.
##
## Gajim 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; version 3 only.
##
## Gajim 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.
##
## You should have received a copy of the GNU General Public License
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
from datetime import datetime
from common import gajim
from common import pep
from common import dbus_support
if dbus_support.supported:
import dbus
class LocationListener:
_instance = None
@classmethod
def get(cls):
if cls._instance is None:
cls._instance = cls()
return cls._instance
def __init__(self):
self._data = {}
def get_data(self):
bus = dbus.SessionBus()
try:
# Initializes Geoclue.
obj = bus.get_object('org.freedesktop.Geoclue.Master',
'/org/freedesktop/Geoclue/Master')
# get MasterClient path
path = obj.Create()
# get MasterClient
cli = bus.get_object('org.freedesktop.Geoclue.Master', path)
cli.SetRequirements(1, 0, True, 1023)
self._get_address(cli)
self._get_position(cli)
except:
self._on_geoclue_position_changed()
return
def _get_address(self, cli):
bus = dbus.SessionBus()
cli.AddressStart()
# Check that there is a provider
name, description, service, path = cli.GetAddressProvider()
if path:
provider = bus.get_object(service, path)
timestamp, address, accuracy = provider.GetAddress()
self._on_geoclue_address_changed(timestamp, address, accuracy)
def _get_position(self, cli):
bus = dbus.SessionBus()
cli.PositionStart()
# Check that there is a provider
name, description, service, path = cli.GetPositionProvider()
if path:
provider = bus.get_object(service, path)
fields, timestamp, lat, lon, alt, accuracy = provider.GetPosition()
self._on_geoclue_position_changed(fields, timestamp, lat, lon, alt,
accuracy)
def start(self):
self.location_info = {}
self.get_data()
bus = dbus.SessionBus()
# Geoclue
bus.add_signal_receiver(self._on_geoclue_address_changed,
'AddressChanged', 'org.freedesktop.Geoclue.Address')
bus.add_signal_receiver(self._on_geoclue_position_changed,
'PositionChanged', 'org.freedesktop.Geoclue.Position')
def shut_down(self):
pass
def _on_geoclue_address_changed(self, timestamp=None, address={},
accuracy=None):
# update data with info we just received
for field in ['country', 'countrycode', 'locality', 'postalcode',
'region', 'street']:
self._data[field] = address.get(field, None)
if timestamp:
self._data['timestamp'] = self._timestamp_to_utc(timestamp)
if accuracy:
# in PEP it's horizontal accuracy
self._data['accuracy'] = accuracy[1]
self._send_location()
def _on_geoclue_position_changed(self, fields=[], timestamp=None, lat=None,
lon=None, alt=None, accuracy=None):
# update data with info we just received
_dict = {'lat': lat, 'lon': lon, 'alt': alt}
for field in _dict:
if _dict[field] is not None:
self._data[field] = _dict[field]
if timestamp:
self._data['timestamp'] = self._timestamp_to_utc(timestamp)
if accuracy:
# in PEP it's horizontal accuracy
self._data['accuracy'] = accuracy[1]
self._send_location()
def _send_location(self):
accounts = gajim.connections.keys()
for acct in accounts:
if not gajim.account_is_connected(acct):
continue
if not gajim.config.get_per('accounts', acct, 'publish_location'):
continue
if self.location_info == self._data:
continue
if 'timestamp' in self.location_info and 'timestamp' in self._data:
last_data = self.location_info.copy()
del last_data['timestamp']
new_data = self._data.copy()
del new_data['timestamp']
if last_data == new_data:
continue
gajim.connections[acct].send_location(self._data)
self.location_info = self._data.copy()
def _timestamp_to_utc(self, timestamp):
time = datetime.utcfromtimestamp(timestamp)
return time.strftime('%Y-%m-%dT%H:%MZ')
def enable():
listener = LocationListener.get()
listener.start()
def disable():
listener = LocationListener.get()
listener.shut_down()
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