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from gi.repository import GLib, Gio
from ctypes import CDLL, POINTER, Structure, CFUNCTYPE, pointer
from ctypes import c_void_p, c_char_p, c_bool
from ctypes.util import find_library
from functools import partial
dbus_xml = '''
<node>
<interface name="net.universe_factory.Pylock">
<method name="Lock"/>
</interface>
</node>
'''
gio = CDLL(find_library('gio-2.0'))
nodeInfo = Gio.DBusNodeInfo.new_for_xml(dbus_xml)
interfaceInfo = nodeInfo.lookup_interface('net.universe_factory.Pylock')
METHOD_CALL_FUNC = CFUNCTYPE(None, c_void_p, c_char_p, c_char_p, c_char_p, c_char_p, c_void_p, c_void_p, c_void_p)
GET_PROPERTY_FUNC = CFUNCTYPE(c_void_p, c_void_p, c_char_p, c_char_p, c_char_p, c_char_p, c_void_p, c_void_p)
SET_PROPERTY_FUNC = CFUNCTYPE(c_bool, c_void_p, c_char_p, c_char_p, c_char_p, c_char_p, c_void_p, c_void_p, c_void_p)
def method_call(locker, connection, sender, object_path, interface_name, method_name, parameters, invocation, user_data):
assert str(method_name, 'ascii') == 'Lock'
locker.lock()
gio.g_dbus_method_invocation_return_value(invocation, hash(GLib.Variant.new_tuple()))
@GET_PROPERTY_FUNC
def get_property(connection, sender, object_path, interface_name, property_name, error, user_data):
assert False
@SET_PROPERTY_FUNC
def set_property(connection, sender, object_path, interface_name, property_name, value, error, user_data):
assert False
class VTable(Structure):
_fields_ = [
("method_call", METHOD_CALL_FUNC),
("get_property", GET_PROPERTY_FUNC),
("set_property", SET_PROPERTY_FUNC)
]
def __init__(self, locker):
Structure.__init__(self)
self.method_call = METHOD_CALL_FUNC(partial(method_call, locker))
self.get_property = get_property
self.set_property = set_property
gio.g_dbus_connection_register_object.argtypes = [c_void_p, c_char_p, c_void_p, POINTER(VTable), c_void_p, c_void_p, c_void_p]
gio.g_dbus_method_invocation_return_value.argtypes = [c_void_p, c_void_p]
class DBus(object):
def __init__(self, locker):
self.vtable = VTable(locker)
Gio.bus_own_name(Gio.BusType.SESSION, 'net.universe_factory.Pylock', Gio.BusNameOwnerFlags.NONE, self.bus_aquired, None, None)
def bus_aquired(self, connection, name):
b = lambda s: bytes(s, 'ascii')
gio.g_dbus_connection_register_object(c_void_p(hash(connection)), b('/net/universe_factory/Pylock'), c_void_p(hash(interfaceInfo)), pointer(self.vtable), None, None, None)
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