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