examples/list-system-services.py

   1 #!/usr/bin/env python
   2
   3 """Usage: python list-system-services.py [--session|--system]
   4 List services on the system bus (default) or the session bus."""
   5
   6 import sys
   7
   8 import dbus
   9
  10 def main(argv):
  11     factory = dbus.SystemBus
  12
  13     if len(argv) > 2:
  14         sys.exit(__doc__)
  15     elif len(argv) == 2:
  16         if argv[1] == '--session':
  17             factory = dbus.SessionBus
  18         elif argv[1] != '--system':
  19             sys.exit(__doc__)
  20
  21     # Get a connection to the system or session bus as appropriate
  22     # We're only using blocking calls, so don't actually need a main loop here
  23     bus = factory()
  24
  25     # This could be done by calling bus.list_names(), but here's
  26     # more or less what that means:
  27
  28     # Get a reference to the desktop bus' standard object, denoted
  29     # by the path /org/freedesktop/DBus.
  30     dbus_object = bus.get_object('org.freedesktop.DBus',
  31                                  '/org/freedesktop/DBus')
  32
  33     # The object /org/freedesktop/DBus
  34     # implements the 'org.freedesktop.DBus' interface
  35     dbus_iface = dbus.Interface(dbus_object, 'org.freedesktop.DBus')
  36
  37     # One of the member functions in the org.freedesktop.DBus interface
  38     # is ListNames(), which provides a list of all the other services
  39     # registered on this bus. Call it, and print the list.
  40     services = dbus_iface.ListNames()
  41     services.sort()
  42     for service in services:
  43         print service
  44
  45 if __name__ == '__main__':
  46     main(sys.argv)