git.slaskete.net - einar-bin/blob - autolock.py

   1 #!/usr/bin/env python
   2 # Automatically lock the screen when bluetooth beacon moves out of range
   3
   4 import time
   5 from beacontools import BeaconScanner, IBeaconFilter, IBeaconAdvertisement
   6 import signal
   7 import dbus
   8 from gi.repository import Gio
   9
  10 global isHere, beaconTimeout
  11 global screenSaverSetActive, screenSaverGetActive, sessionIdleTime
  12
  13 def handler(signum, frame):
  14     scanner.stop()
  15     exit(0)
  16
  17 def callback(bt_addr, rssi, packet, additional_info):
  18     global isHere
  19     isHere = True
  20
  21 sessionBus = dbus.SessionBus()
  22
  23 screenSaver = sessionBus.get_object("org.gnome.ScreenSaver", "/org/gnome/ScreenSaver")
  24 screenSaverIface = dbus.Interface(screenSaver, 'org.gnome.ScreenSaver')
  25 screenSaverSetActive = screenSaverIface.get_dbus_method("SetActive")
  26 screenSaverGetActive = screenSaverIface.get_dbus_method("GetActive")
  27
  28 mutter = sessionBus.get_object('org.gnome.Mutter.IdleMonitor', '/org/gnome/Mutter/IdleMonitor/Core')
  29 mutterIface = dbus.Interface(mutter, 'org.gnome.Mutter.IdleMonitor')
  30 sessionIdleTime = mutterIface.get_dbus_method("GetIdletime")
  31
  32 # scan for all iBeacon advertisements regardless from which beacon
  33 #scanner = BeaconScanner(callback,
  34 #    packet_filter=IBeaconAdvertisement
  35 #)
  36
  37 signal.signal(signal.SIGINT, handler)
  38
  39 beaconTimeout=0
  40
  41 while True:
  42     isHere = False
  43     scanner = BeaconScanner(callback,
  44         device_filter=IBeaconFilter(uuid="INSERT BEACON UUID HERE")
  45     )
  46     scanner.start()
  47     time.sleep(10)
  48     scanner.stop()
  49     idleTime = sessionIdleTime() / 1000
  50
  51     if isHere:
  52         #print("Beacon observed")
  53         beaconTimeout = 0
  54     else:
  55         beaconTimeout += 10
  56         #print("Beacon not observed,", idleTime, "seconds since last activity,", beaconTimeout, "seconds since beacon seen")
  57         if idleTime >= 60 and beaconTimeout >= 60:
  58             if not screenSaverGetActive():
  59                 print("No activity and not seen for at least 60 seconds, locking screen")
  60                 screenSaverSetActive(True)