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import mate_invest
from mate_invest.defs import NETWORKMANAGER_VERSION
from dbus.mainloop.glib import DBusGMainLoop
import dbus
# possible states, see http://projects.gnome.org/NetworkManager/developers/ -> spec 0.8 -> NM_STATE
STATE_UNKNOWN = dbus.UInt32(0)
STATE_ASLEEP = dbus.UInt32(1)
STATE_CONNECTING = dbus.UInt32(2)
STATE_CONNECTED = dbus.UInt32(3)
STATE_DISCONNEDTED = dbus.UInt32(4)
# numerical values of these states depend on the network manager version, they changed with 0.8.995
fields = NETWORKMANAGER_VERSION.split('.')
if len(fields) >= 2:
major = int(fields[0])
minor = int(fields[1])
if len(fields) > 2:
micro = int(fields[2])
if major > 0 or major == 0 and (minor >= 9 or len(fields) > 2 and minor == 8 and micro >= 995):
# see http://projects.gnome.org/NetworkManager/developers/ -> spec 0.9 -> NM_STATE
print("Found NetworkManager spec 0.9 (%s)" % NETWORKMANAGER_VERSION)
STATE_UNKNOWN = dbus.UInt32(0)
STATE_ASLEEP = dbus.UInt32(10)
STATE_DISCONNECTED = dbus.UInt32(20)
STATE_DISCONNECTING = dbus.UInt32(30)
STATE_CONNECTING = dbus.UInt32(40)
STATE_CONNECTED_LOCAL = dbus.UInt32(50)
STATE_CONNECTED_SITE = dbus.UInt32(60)
STATE_CONNECTED_GLOBAL = dbus.UInt32(70)
STATE_CONNECTED = STATE_CONNECTED_GLOBAL # backward compatibility with < 0.9
class NetworkManager:
def __init__(self):
self.state = STATE_UNKNOWN
self.statechange_callback = None
try:
# get an event loop
loop = DBusGMainLoop()
# get the NetworkManager object from D-Bus
mate_invest.debug("Connecting to Network Manager via D-Bus")
bus = dbus.SystemBus(mainloop=loop)
nmobj = bus.get_object('org.freedesktop.NetworkManager', '/org/freedesktop/NetworkManager')
nm = dbus.Interface(nmobj, 'org.freedesktop.NetworkManager')
# connect the signal handler to the bus
bus.add_signal_receiver(self.handler, None,
'org.freedesktop.NetworkManager',
'org.freedesktop.NetworkManager',
'/org/freedesktop/NetworkManager')
# get the current status of the network manager
self.state = nm.state()
mate_invest.debug("Current Network Manager status is %d" % self.state)
except Exception, msg:
mate_invest.error("Could not connect to the Network Manager: %s" % msg )
def online(self):
return self.state == STATE_UNKNOWN or self.state == STATE_CONNECTED
def offline(self):
return not self.online()
# the signal handler for signals from the network manager
def handler(self,signal=None):
if isinstance(signal, dict):
state = signal.get('State')
if state != None:
mate_invest.debug("Network Manager change state %d => %d" % (self.state, state) );
self.state = state
# notify about state change
if self.statechange_callback != None:
self.statechange_callback()
def set_statechange_callback(self,handler):
self.statechange_callback = handler
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