46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
# Copyright (C) 2016 Fabio Falcinelli, Maximilian Hils
|
||
|
|
#
|
||
|
|
# This program is free software: you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
# the Free Software Foundation, either version 3 of the License, or
|
||
|
|
# (at your option) any later version.
|
||
|
|
#
|
||
|
|
# This program is distributed in the hope that it will be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU Lesser General Public License for more details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU Lesser General Public License
|
||
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
import struct
|
||
|
|
|
||
|
|
from pydivert.packet.header import Header, PayloadMixin, PortMixin
|
||
|
|
from pydivert.util import PY2, PY34, raw_property
|
||
|
|
|
||
|
|
|
||
|
|
class UDPHeader(Header, PayloadMixin, PortMixin):
|
||
|
|
header_len = 8
|
||
|
|
|
||
|
|
@property
|
||
|
|
def payload(self):
|
||
|
|
return PayloadMixin.payload.fget(self)
|
||
|
|
|
||
|
|
@payload.setter
|
||
|
|
def payload(self, val):
|
||
|
|
PayloadMixin.payload.fset(self, val)
|
||
|
|
self.payload_len = len(val)
|
||
|
|
|
||
|
|
if not PY2 and not PY34:
|
||
|
|
payload.__doc__ = PayloadMixin.payload.__doc__
|
||
|
|
|
||
|
|
@property
|
||
|
|
def payload_len(self):
|
||
|
|
return struct.unpack_from("!H", self.raw, 4)[0] - 8
|
||
|
|
|
||
|
|
@payload_len.setter
|
||
|
|
def payload_len(self, val):
|
||
|
|
self.raw[4:6] = struct.pack("!H", val + 8)
|
||
|
|
|
||
|
|
cksum = raw_property('!H', 6, docs='The UDP header checksum field.')
|