#!/usr/bin/env python

import os
import gobject
import dbus

def activate_reply (res):
    print "session activated"

def activate_error (e):
    print str (e)


bus = dbus.SystemBus ()

manager_obj = bus.get_object ('org.freedesktop.ConsoleKit', '/org/freedesktop/ConsoleKit/Manager')

manager = dbus.Interface (manager_obj, 'org.freedesktop.ConsoleKit.Manager')

params = dbus.Array ([], signature = "sv")
params.append (("user", dbus.Variant (730)))
params.append (("session-type", dbus.Variant ("gnome-session")))
params.append (("x11-display", dbus.Variant (":0.0")))
params.append (("display-device", dbus.Variant ("/dev/tty8")))

cookie = manager.OpenSessionWithParameters (params)
os.environ['XDG_SESSION_COOKIE'] = cookie

seats = manager.GetSeats ()
for sid in seats:
    seat_obj = bus.get_object ('org.freedesktop.ConsoleKit', sid)
    seat = dbus.Interface (seat_obj, 'org.freedesktop.ConsoleKit.Seat')
    sessions = seat.GetSessions ()
    for ssid in sessions:
            session_obj = bus.get_object ('org.freedesktop.ConsoleKit', ssid)
            session = dbus.Interface (session_obj, 'org.freedesktop.ConsoleKit.Session')
            uid = session.GetUser ()

current_session = manager.GetSession (cookie)
print "Current session: %s" % current_session

session_obj = bus.get_object ('org.freedesktop.ConsoleKit', ssid)
session = dbus.Interface (session_obj, 'org.freedesktop.ConsoleKit.Session')

session.Activate (reply_handler = activate_reply, error_handler = activate_error)

mainloop = gobject.MainLoop ()

gobject.timeout_add (30000, mainloop.quit)

mainloop.run()