mac changer

macchanger.py

import dbus

bus = dbus.SystemBus()

NM = 'org.freedesktop.NetworkManager'

def get_manager():
    proxy = bus.get_object(NM, '/org/freedesktop/NetworkManager')
    return dbus.Interface(
        proxy, NM)

def get_settings_object():
    proxy = bus.get_object(NM, '/org/freedesktop/NetworkManager')
    iface = dbus.Interface(proxy, 'org.freedesktop.DBus.Properties')

    active = iface.Get(NM, 'ActiveConnections')[0]
    active_proxy = bus.get_object(NM, active)

    conn = dbus.Interface(
        active_proxy, 'org.freedesktop.DBus.Properties'
    ).Get(
        'org.freedesktop.NetworkManager.Connection.Active', 'Connection'
    )
    connproxy = bus.get_object(NM, conn)
    return dbus.Interface(
        connproxy,
        'org.freedesktop.NetworkManager.Settings.Connection'
    )

def to_byte_array(mac):
    return dbus.Array([dbus.Byte(int(x, 16)) for x in mac.split(':')])

def change_mac():
    settings = get_settings_object()
    s = settings.GetSettings()
    s['802-11-wireless']['cloned-mac-address'] = to_byte_array(
        '6c:a8:12:3f:fc:b4')
    key = settings.GetSecrets(
        '802-11-wireless-security')['802-11-wireless-security']['psk']
    s['802-11-wireless-security']['psk'] = key
    settings.Update(s)
    get_manager().Enable(False)
    get_manager().Enable(True)

if __name__ == '__main__':
    change_mac()