vpn-indicator-daemon

#!/usr/bin/python

import os
import dbus
import dbus.service
import dbus.mainloop.glib
import gobject
import subprocess

class Daemon(dbus.service.Object):
    INTERFACE = "me.imtx.vpndaemon"
    ENV = {'PATH': '/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin'}

    @dbus.service.method(INTERFACE,
                         in_signature='s', out_signature='')
    def load_config(self, path):
        os.system('ln -sf %s /etc/openvpn/openvpn.conf' % path)

    @dbus.service.method(INTERFACE,
                         in_signature='', out_signature='ss')
    def stop_vpn(self):
        return subprocess.Popen(['service', 'openvpn', 'stop'],
                                stdout=subprocess.PIPE,
                                stderr=subprocess.PIPE,
                                env=self.ENV).communicate()

    @dbus.service.method(INTERFACE,
                         in_signature='', out_signature='ss')
    def start_vpn(self):
        return subprocess.Popen(['service', 'openvpn', 'start'],
                                stdout=subprocess.PIPE,
                                stderr=subprocess.PIPE,
                                env=self.ENV).communicate()

    @dbus.service.method(INTERFACE,
                         in_signature='', out_signature='b')
    def is_running(self):
        # Fedora/GNOME Shell use this
        output = ''.join(subprocess.Popen(['service', 'openvpn', 'status'],
                                        stdout=subprocess.PIPE,
                                        stderr=subprocess.PIPE,
                                        env=self.ENV).communicate())
        if 'not started' in output:
            return False
        else:
            return True

    @dbus.service.method(INTERFACE,
                         in_signature='', out_signature='b')
    def is_connected(self):
        # Fedora/GNOME Shell use this
        output = ''.join(subprocess.Popen(['ifconfig', '-s'],
                                          stdout=subprocess.PIPE,
                                          stderr=subprocess.PIPE,
                                          env=self.ENV).communicate())
        if 'tun' in output:
            return True
        else:
            return False

    @dbus.service.method(INTERFACE,
                         in_signature='', out_signature='')
    def exit(self):
        mainloop.quit()

if __name__ == '__main__':
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

    system_bus = dbus.SystemBus()
    name = dbus.service.BusName(Daemon.INTERFACE, system_bus)
    object = Daemon(system_bus, '/Daemon')

    mainloop = gobject.MainLoop()
    mainloop.run()